• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Height control system of printing substrates for digital printing machines with heads defining a printing area, comprising a support table (1) for moving the printing substrates to the printing area; and a suction assembly for exerting an aspiration through the support table (1) so that the printing substrates are retained by suction when being displaced; in addition to a pressure assembly having skids (10, 11) distributed transversely on the support table (1) and arranged to limit in height the printing substrates with respect to the support table (1) according to a height of operation of the suction assembly. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2679894A1
    申请号:ES201730203
    申请日:2017-02-20
    公开日:2018-08-31
    发明作者:Jesus Francisco Barberan Latorre
    申请人:Jesus Francisco Barberan Latorre；
    IPC主号:
    专利说明:

    Print media height control system for digital printing machines Technical sector
    The present invention is related to the industry related to digital printing, and more specifically to the industry dedicated to the manufacture of digital printing machines for printing on substantially flat supplied printing substrates. State of the art
    Nowadays it is widely known to print on printing substrates by means of digital printing machines in order to provide them with a desired exterior finish or appearance. These printing substrates present difficulties in their printing, for example when they are plates formed by two flat outer sheets and at least one corrugated intermediate sheet.
    Said printing substrates are subject to tensions from the moment they are obtained due to the configuration described. These tensions derive in deformations of the substrates, being arranged according to a concave or convex arrangement on a table or bearing surface for printing.
    These deformations are increased when a preliminary base primer is applied to the printing substrates for proper acceptance of ink drops applied when the printing is carried out. These ink drops are applied by means of "inkjet" technology on the base primer so that a desired dimension of each of the ink drops is obtained on the printing substrate.
    Currently, in order to try to maintain the printing substrates according to a flat arrangement on the support tables for an adequate application or injection of the ink drops, that is to say an adequate printing of said substrates, it is known to apply an aspiration to in order to generate a suction in the printing substrates resulting in a vacuum effect. However, the effectiveness of this solution is severely limited by the geometries of the substrates and the degrees of deformation that reach a consequence of its configuration and / or the application of said base primer.
    In view of the described disadvantages that present solutions presently present, it is evident that a solution is necessary to ensure the correct arrangement of the substrates for printing according to a flat arrangement. Object of the invention
    In order to meet this objective and solve the technical problems discussed so far, in addition to providing additional advantages that can be derived later, the present invention provides a height control system for printing substrates for digital print machines with heads defining a printing area in order to ensure a correct disposition of the printing substrates while they are subject to printing or injecting ink drops.
    The printing substrate height control system comprises a lift table for moving the printing substrates to the printing area; a suction assembly for exerting an aspiration through the support table so that the printing substrates are retainable by suction against the support table when they are displaced.
    The control system of the invention additionally comprises a pressure assembly having skates distributed transversely on the support table and arranged to limit the printing substrates in height with respect to the support table according to an actuation height of the assembly of aspiration. Thus, deformations of the printing substrates are faced in such a way that the surface of the printing substrates subject to aspiration of the aspiration assembly is optimized.
    The skates comprise a base for contacting the printing substrates displaced by the support table and a body for fixing to the digital printing machine, the bases being connected to the bodies by means of plates so that the bases are movable with respect to the bodies. Thus, the direction of the printing substrates towards the support table submitted by contact by the bases is softened.
    The skates comprise protruding axes that are attached at one end to the bodies and through the bases, and the pressure assembly comprises first elastic springs that partially wrap the protruding axes between the bodies and the bases. The projecting axes are configured to be linearly movable so that the bases are movable or movable with a separation distance between the bases and the lift table being varied. In turn, the separation distance between the bodies and the support table is maintained. In this way, the pressure to be exerted by the skates on the printing substrates is adjustable, only the bases being positioned according to different thicknesses or thicknesses of the printing substrates.
    The skates are at least two side skates and a central skate, the side skates being movable so that they are approximate or remote with respect to the central skate. In this way, the side skates are positionable according to the dimensions of each of the substrates, that is to say its width according to the direction and direction of movement through the lift table.
    The printing substrate height control system comprises a barrier assembly having panels arranged to swing and defining a height of passage of the printing substrates to the printing area. This height is defined according to a measure that allows to obtain an optimal print finish.
    The barrier assembly comprises at least one proximity sensor arranged to generate a signal in accordance with detections made based on the tilting measurements of the panels. This allows regulating and even stopping the operation of the digital printing machine. This prevents damage to the digital printing machine, as well as unwanted quality prints.
    The bases and the panels are jointly arranged so that when the bases are balanced the panels are swivel by contact. Thus, proximity sensors detect displacements of both panels and bases.
    The print media height control system comprises height adjustment means that include a third motor and two threaded spindles, the two threaded spindles being operable by the third motor and each of the threaded spindles being joined at one end to a sheet arranged in correspondence with a side of the lift table.
    The pressure assembly is connected to the two plates, so that the two plates being displaced by the threaded spindles, a gap is regulated between the skates and the lift table. In this way, the gap is selectable based on the thickness of the printing substrates.
    The barrier assembly is connected to the two plates, so that the two plates being displaced by the threaded spindles, a space between the panels and the lift table is regulated. In this way, the space is selectable based on the thickness of the printing substrates.
    The height control system of printing substrates comprises a cover set comprising strips developed or extended according to the longitudinal direction of the support table and arranged to limit in height the printing substrates located on the corresponding support table With the printing area. The strips, therefore, are located between the support table and the heads of the digital printing machine. In this way, it is possible to prevent the printing substrates from coming into contact with the heads of the digital printing machine so that they can be damaged.
    The strips are two lateral strips and at least one central strap, the two lateral strips being movable so that they are approximate or remote from each other. Additionally, there may be two central strips, which are configured to be movable so that they are approximate or remote from each other. This provides flexibility when it comes to protecting the heads. Description of the figures
    Figure 1 shows a schematic sectional view of a feeding table comprised in a height control system of printing substrates object of the present invention.
    Figure 2 is a schematic perspective sectioned view of the feed table, which also shows a pressure assembly and a barrier assembly comprised in the height control system of printing substrates object of the present invention.
    Figure 3 shows a perspective view of the pressure assembly included in the height control system of printing substrates object of the present invention.
    Figure 4 shows a detail indicated with the reference "D" in Figure 3.
    Figure 5 shows a schematic perspective sectioned view of the printing assembly of the print substrate height control system object of the present invention.
    Figure 6 shows a schematic perspective sectioned view of the barrier assembly of the print substrate height control system object of the present invention.
    Figure 7 shows a schematic sectional plan view of the barrier assembly of the print substrate height control system object of the present invention.
    Figure 8 shows a perspective view of a cover assembly comprised in the height control system of printing substrates object of the present invention. Detailed description of the invention
    The invention relates to a height control system of printing substrates for digital printing machines with heads defining a printing zone. The height control system of printing substrates allows to ensure the correct arrangement of the substrates for printing according to a flat layout. A digital printing machine comprising the height control system of printing substrates is then derivable.
    The print media height control system comprises a lift table (1) and a suction assembly. The support table (1) has pipes (1.1) that connect an internal face with an external face of the support table (1), that is to say connect an internal volumetric space with an external part. In the figures 1 and 2 the pipes (1.1) have not been shown on the outer resting side of the printing substrates for reasons of clarity. The printing substrate height control system has an actuator device (1.2) for operating the support table (1) so that the printing substrates are moved on it (1) towards the printing area.
    The suction assembly comprises fixed side walls (2) and a bottom wall (3) to define together with the support table (1) the internal volumetric space. The suction assembly additionally comprises conduits (4) for communicating the internal volumetric space with the external part through the bottom wall (3) and internal panels (5) that can be moved laterally. The interior panels (5) are parallel to the fixed side walls (2) and are developed according to the longitudinal extension of the feeding table. For lateral displacement of the inner panels (5) in the internal volumetric space the suction assembly comprises first motors (6), an actuator shaft (7.1) and drive shafts (7.2).
    The first motors (6) drive the actuator shaft (7.1) for rotation, which is developed by an external side of one of the fixed side walls (2). The drive shaft (7.1) is connected to the drive shafts (7.2) so that the rotation of the drive shaft (7.1) is transmitted to the drive shafts (7.2). The drive shafts (7.2) are distributed according to the longitudinal extension of the actuator shaft (7.1) and arranged through the fixed side walls (2) and the inner panels (5). According to this arrangement, according to a direction of rotation of the driving shafts (7.2) the inner panels (5) approach each other and according to another direction of rotation of the driving shafts (7.2) the inner panels (5) are spaced between yes.
    As is derivable from Figures 1 and 2, the interior panels (5) are laterally movable, the communication conduits (4) being located between them in their connection or access to the volumetric space. In this way, the surface of the support table (1) through which the suction is made, in a lateral measure or width, is adapted to the dimensions of the printing substrates. In this way an aspiration generated by the aspiration assembly, for which it also comprises an aspiration pump not shown in the figures, results in a vacuum effect that tends to establish contact of the printing substrates with the support table (1 ). Thus, the suction or suction achievable in each of the printing substrates is adjustable and adaptable in a particular way, which significantly improves the efficiency of the aspiration assembly. The printing substrate height control system comprises a pressure assembly.
    The pressure assembly comprises a bridge beam (8) that covers the width of the support table (1) and two plates (9), each end of the bridge beam (8) being arranged fixed to one of the two plates (9 ).
    The pressure assembly additionally comprises skates (10, 11), these being side skates (10) laterally movable and at least one central skid (11) fixed or not movable laterally, in addition to rotating axles (12), guides (13) and a central support (14). Preferably, there are two central skates (11) arranged together so that the action of the pressure assembly on the printing substrates supplied two by two in parallel at the same time is possible.
    The guides (13) are located on the bridge beam (8) and define the lateral path to be followed by the side skates (10) in their displacements as they are arranged in said guides (13). Also, the rotating shafts (12) extend from the plates (9) to the central support (14) attached to the bridge beam (8). The rotating shafts (12) are operable for rotation by means of a second motor (15) so that the side skates (10), crossed by the rotating shafts (12), are displaced due to the rotation of said shafts (12) of so that they approach or move away from each other. The central support (14) additionally serves as a connecting element of the central skates (11) to the bridge beam (8).
    The side skates (10) and the central skates (11) comprise a base (16) for contacting the printing substrates as they pass under them and a body (17), through which the rotating shafts (12) pass. The fitting of the side skates (10) in the guides (13) is also carried out by means of the parts corresponding to the bodies (17). The bases (16) are connected to the bodies (17) hanging from them by means of plates (18) so that the bases (16) can be moved according to a rocking motion while the bodies (17) remain immobile by be crossed by the rotating shafts (12) and embedded in the guides (13).
    The bases (16) include a convex tip (16 ’) to minimize an energy to be transmitted to the bases (16) by impact or contact of the printing substrates in their displacement towards the printing area. Parts of the high printing substrates due to deformations with respect to the support table (1), are directed by contact with the convex tips (16 ') and maintained by pressure closer to the support table (1) by means of the rest of the longitudinal extension of the bases (16). The bases (16) are arranged with respect to the support table (1) according to a separation, such that the suction assembly can act on the printing substrates to exert suction on them.
    The adjustment that can be made in the positioning of the side skates (16) according to the width of the support table (1) allows the lateral sealing of the printing substrates to be established in their extreme lateral parts according to their movement through the support table (1) towards the printing area. This sealing of the printing substrates in the parts closest to the fixed side walls (2), together with the pressure exerted on the printing substrates by means of the central skates (11), optimizes the suction achievable on the printing substrates by means of the suction assembly by ensuring the maximum surface of the printing substrates to receive the corresponding suction or aspiration.
    The side skates (10) and the central skates (11) additionally comprise a projecting shaft (19) attached to the corresponding body (17) at one end and crossing the bases (16). A free end of the projecting axes (19), opposite to the one of union to the bodies (17), is located on the convex tips (16 '), so that the convex tips (16') are between said free ends and the lift table (1).
    The projecting axes (19) are movable with respect to the bodies (17) and the bases (16), the displacement being regulated by a first elastic spring (20). Outgoing shafts
    (19)  they are configured to be rotated in such a way that a regulation or variation in a compressive strength is established that the first elastic springs (20) have, being linearly displaced as a result of being rotated. That is, with the rotation of the projecting axes (19) the compression of the first elastic spring (20) is regulated.
    Also, the rotation of the projecting axes (19) through the free ends regulates the position of the bases (16) with respect to the bodies (17). That is, the outgoing axes being rotated
    (19)  the bases (16) are displaced according to the balancing movement due to their attachment to the bodies (17) by means of the plates (18). This entails regulating the separation distance between the bases (16) and the support table (1), the separation distance between the bodies (17) and the support table (1) being maintained. In this way the pressure to be exerted by the skates (10, 11) on the printing substrates is adjustable. This regulation is adaptable to different thicknesses or thicknesses of the substrates
    of impression.
    The print media height control system comprises a barrier assembly. The barrier assembly, like the pressure assembly, extends from one of the plates
    (9) to the other of the plates (9). That is, the plates (9) serve as lateral limits for fixing both sets according to the direction and direction of longitudinal advance of the printing substrates by the support table (1) towards the printing area.
    The printing media height control system comprises height adjustment means. These height adjustment means move the plates (9) perpendicular to the support table (1), and with respect to this (1), and with the plates (9) also the barrier assembly and the pressure assembly. The height adjustment means comprise a third motor (21) and threaded spindles (22), each of the threaded spindles (22) being connected to one of the plates (9). In this way, a control of the height of the printing substrates is stable, this control being adaptable for example to different thicknesses of the printing substrates.
    The barrier assembly comprises an iron (23) and supports (24), the supports being
    (24) located between the plate (23) and the bridge beam (8). Said supports (24) are distributed along the longitudinal extension of the bridge beam (8) and act as separation elements between the plate (23) and the bridge beam (8), being in contact with both the plate (23 ) as with the bridge beam (8). The supports (24) on one side are fixed to the bridge beam (8) and on the other side to the plate (23). The barrier assembly additionally comprises a support beam (25) and connecting arms (26) of the support beam (25) to the plate (23). In this way a rigid connection is established between the pressure assembly and the barrier assembly along the length of both in order to avoid unwanted bending in these between the plates (9).
    In addition, the barrier assembly additionally comprises panels (27), connections (28), bars (29) and connectors (30). The connections (28) connect the panels (27) to the bars (29), allowing an angular rotation of the panels (27) with respect to the bars (29). The bars (29), in turn, are connected to the plate (23) by means of the connectors (30).
    The barrier assembly comprises proximity sensors (31) fixed to the support beam (25), while the panels (27) include a first extension (27.1). In this way, the proximity sensor (31) and the first extension (27.1) are arranged together so that the proximity sensor (31) detects variations in a measurement of separation between a sensor end (31.1) of its own and the first extension (27.1) of the corresponding panel (27). Accordingly, the proximity sensor (31) has the sensor end (31.1) facing the first extension (27.1) and a connection end (31.2) for transmission of the information or signal generated based on the detections made concerning to separation measures.
    In the rest state, figures 6 and 7, that is to say without external forces applied to the barrier assembly, the panels (27) hang from the bars (29), the first extension (27.1) being close to the sensor end (31.1). In this way, an inactivity positioning is established for the proximity sensor (31), that is, it does not generate any alert signal.
    When the printing substrates pass under the pressure set and impact one
    or several of the panels (27), these rotate or tilt. This rotation of the panels (27) implies a distance or an increase in the measurement of separation between the sensor end (31.1) and the corresponding first extension (27.1). Given the increase in the measurement of separation between the sensor ends (31.1) and the first extensions (27.1), the corresponding proximity sensors (31) generate and transmit an alert signal to regulate and even stop the operation of the printing machine digital.
    In this way, printing on printing substrates that are undesirably arranged for proper printing can be prevented, that is, on substrates that are punctually spaced excessively from the support table (1) due to deformations which entail the not completely flat arrangement of the corresponding printing substrate.
    The barrier assembly comprises recovery means (32), while the panels
    (27) include a second extension (27.2). The recovery means (32) include a joint body (32.1) attached to the support beam (25) and a second elastic spring (32.2), which is arranged attached at one end to the joint body (32.1) and by other end to the second extension (27.2). In this way, means are provided for returning the panels (27) according to their resting state after being turned or tilted. The connecting body (32.1) includes a groove (32.1.1) to be attached to the support beam (25) by means of pythons (32.1.2) arranged in said support beam (25). The union body
    (32.1) is scrollable to position according to different points of the pythons
    (32.1.2) in the slot (32.1.1). To regulate this movement of the pythons (32.1.2) through the groove (32.1.1) and establish a positioning of the joint body (32.1) in the support beam (25), the barrier assembly includes a threaded element (33) that joins the joint body (32.1) and the corresponding panel (27), and more specifically said joint body
    (32.1) with a third extension (27.3) of the corresponding panel (27). The threaded element
    (33) is inserted through the connecting body (32.1) and the third extension
    (27.3) so that when rotated, a gap between said joint body (32.1) and said third extension (27.3) is regulated. This in turn results in a regulation of the arrangement of the second elastic spring (32.2) according to different longitudinal extensions, which implies a regulation in the performance of the recovery means (32).
    The barrier assembly comprises stop means (34), while the panels (27) include a fourth extension (27.4). In this way means are provided to limit the displacement of the panels (27) in their return to their position according to their resting state. Thus, for example, damage to the proximity sensor (31) due to an impact of the first extension (27.1) with the sensor end (31.1) is avoided.
    The stop means (34) include a threaded shaft (34.1) so that according to a screwed degree of the threaded shaft (34.1) a stop measurement is determined for the position of the panels (27) on their return to their position of agreement to its state of rest. Preferably, the threaded shaft (34.1) is disposed on the support beam (25) and abuts or contacts against the fourth extension (27.4), which optionally includes a contact element
    (34.2) to contact the threaded shaft (33.1).
    The skates (10, 11) and the panels (27) are arranged so that before a certain degree of balance of the bases (16), ie displacement with respect to the bodies (17), the corresponding panels (27) are displaced by contact of said bases (16) so that they rotate angularly with respect to the bars (29) from which they hang. In this way, impacts received by the skates (10, 11) can also be detected by the proximity sensors (31). Thus, the necessary elements for the detection of the printing substrates with deformations that prevent an adequate impression on them are reduced.
    Preferably, the barrier assembly comprises several of the panels (27), as well as one of the bars (29), one of the proximity sensors (31), etc. for each of the panels (27).
    The printing substrate height control system comprises a cover set, which is appreciable in Figure 8. The cover set comprises strapping (35, 36), side strapping (35) and at least one central strapping (36), configured in the form of flat and elongated sheets. Preferably, there are two central strips (36) so that better control is possible before a supply of the printing substrates two at a time in parallel at the same time. The strips (35, 36) are developed through the printing area so that the printing substrates move parallel to their longitudinal extension (35, 36). In other words, the strips (35, 36) extend from an entry point to the printing area of the printing substrates to an exit point of the printing zone. In addition, the strips (35, 36) are arranged avoiding interference with the heads of the digital printing machine.
    Also, the strips (35, 36) are located between the heads and the support table (1), leaving with respect to the support table (1) a space for the movement of the printing substrates. The strips (35, 36), therefore, are arranged to prevent contact of the printing substrates with the heads. Thus, they limit the height of the printing substrates along the printing area, and avoid both head damage and unwanted ink stains on the printing substrates. For this it is taken into account that between the heads and the printing substrates the separation is preferably between 1 and 4 millimeters.
    A first longitudinal end of the lateral strips (35) is attached to first lateral pillars (37.1) and a second longitudinal end of the lateral strips
    (35) is attached to a few second lateral pillars (37.2). Likewise, a first longitudinal end of the central strips (36) is attached to first central pillars (38.1) and a second longitudinal end of the central strips (36) is attached to a second central pillars (38.2).
    The cover set includes towers (39.1, 39.2), first towers (39.1) and second towers (39.2), with pulleys (not shown in the figures). The first towers (39.1) are two, as are the second towers (39.2). The cover set comprises tapes (40) connecting the pulleys of one of the first towers on one side
    (39.1) with the other first tower (39.1), and on the other hand the pulleys of one of the second towers (39.2) with the other second tower (39.2).
    The cover set additionally comprises fourth engine rooms (41) arranged so that the pulleys of one of the first towers (39.1) and one of the second towers (39.2) are operable for rotation, for which the cover set also includes actuator connections (42). The printing substrates access the printing area passing between the first towers (39.1) and leave the printing area passing between the second towers (39.2).
    The cover set additionally comprises rails (43) fixed to the digital printing machine. Thus, the first lateral pillars (37.1), the second lateral pillars (37.2), the first central pillars (38.1) and the second central pillars (38.2) have, at their vertical, upper and lower ends, parts that engage with the rails
    (43) to move along said rails (43).
    There are two pulleys included in each of the towers (39.1, 39.2), four being the towers (39.1, 39.2). The towers (39.1, 39.2) are mechanically connected in pairs to each other, that is, two to two, by means of the belts (40) embedded in the pulleys. Specifically, the first towers (39.1) with each other and the second towers (39.2) with each other. In this way, the fourth engines (41) driving the pulleys of one of the first towers (39.1) and one of the second towers (39.2) rotate the pulleys of all the towers (39.1, 39.2).
    Each of the pillars (37.1, 37.2) has a clamp (44) to be fixed to one of the tapes (40) so that it is movable by the movement transmitted by the tape (40). The tweezers
    (44) are distributed, as can be seen in Figure 8, so that before turning one of the belts (40) that joins together the first towers (39.1), the first lateral pillars
    (37.1) approach or move away from each other according to the direction of rotation of the belt (40). In a synchronized manner, the corresponding belt (40) joining the second lateral pillars (37.2) rotates to move said second lateral pillars (37.2) according to the first lateral pillars (37.1), that is to say the second lateral pillars (37.2) facing each other to the first lateral pillars (37.1) or what is the same keeping the lateral strips (35) parallel to each other.
    Likewise, the distribution of the clamps (44) implies that before turning of another of the belts (40) that joins the first towers (39.1) together, the first two central pillars (38.1) approach or move away from each other according to the direction of rotation of the belt (40). In a synchronized manner, the corresponding belt (40) joining the second central pillars (38.2) rotates to move said second central pillars (38.2) according to the first central pillars (38.1), that is, the second central pillars (38.2) facing each other to the first central pillars (38.1) or what is the same keeping the central strips (36) parallel to each other.
    The first lateral pillars (37.1) and the first central pillars (38.1) have a contact sheet (45) fixed in correspondence with their lower vertical end, that is, the one closest to the support table (1). The contact sheets (45) have a curved or angled shape so that a free end thereof (45) is directed or points towards the printing area. Thus, in the face of deformations of the printing substrates, the contact sheets (45) direct the corresponding parts of the printing substrates towards the support table (1) to reduce the possible impact with the strips (35, 36). The strips (35, 36) limit the height of the printing substrates along the printing area. The second lateral pillars (37.2) and the second central pillars (38.2) preferably also have the contact sheets (45) to soften the output of the printing substrates with parts forced by the strips (35, 36) to be kept away from the Heads
    The cover set additionally comprises position sensors (46) to detect the position of the first lateral pillars (37.1), the second lateral pillars (37.2) the first central pillars (38.1) and the second central pillars (38.2). Each of these pillars (37.1, 37.2, 38.1, 38.2) has one of the position sensors (46). In this way, it is conformable that said pillars (37.1, 37.2, 38.1, 38.2) are positioned according to desired positions, these positions being according to areas free of ink injections by the heads.
    Likewise, the cover set additionally comprises breakage sensors (46) to detect a change in the tension of the strips (35, 36) in their fixation by their ends to the corresponding pillars (37.1, 37.2, 38.1, 38.2). Breaking sensors (46) include a third elastic spring to control the tension of the straps (35, 36). In this way, the breakage sensors (46) are arranged to detect breakage of the strips (35, 36) for example by contact of the printing substrates with deformations with them (35, 36).
    In this way, the heads are protectable against the deformations determined for each of the printing substrates. Thus, it is allowed to absorb or counteract the deformations of the printing substrates or even stop the operation of the digital printing machine according to the deformations in the printing substrates.
    权利要求:
    Claims (14)
    [1]
    1.-Height control system of printing substrates for digital printing machines with heads defining a printing area, comprising:  a support table (1) for moving the printing substrates to the printing area;
     a suction assembly for exerting an aspiration through the support table (1) so that the printing substrates are retainable by suction against the support table when they are moved;
    characterized in that it additionally comprises:
     a pressure assembly having skates (10, 11) distributed transversely on the support table (1) and arranged to limit the printing substrates in height with respect to the support table (1) according to a height of actuation of the suction assembly.
    [2]
    2. Height control system of printing substrates according to claim 1, characterized in that the skates (10, 11) comprise a base (16) for contacting the printing substrates displaced by the support table (1) and a body (17) for fixing to the digital printing machine, the bases (16) being connected to the bodies
    (17) by means of plates (18) so that the bases (16) are movable with respect to the bodies (17).
    [3]
    3. Height control system of printing substrates according to claim 2, characterized in that the skates (10, 11) comprise protruding shafts (19) that are joined at one end to the bodies (17) and through the bases (16), and the pressure assembly comprises first elastic springs (20) that partially wrap the protruding shafts (19) between the bodies (17) and the bases (16).
    [4]
    4. Height control system of printing substrates according to claim 3, characterized in that the protruding shafts (19) are configured to be linearly movable so that the bases (16) are movable being a separation distance between the bases (16) and the support table (1).
    [5]
    5. Height control system of printing substrates according to any one of the preceding claims, characterized in that the skates (10, 11) are at least two side skates (10) and a central skate (11), the skates being lateral (10) movable so that they are approximate or detachable with respect to the central skate (10).
    [6]
    6. Height control system of printing substrates according to any one of the preceding claims, characterized in that it comprises a barrier assembly having panels (27) arranged to swing and defining a height of passage of the printing substrates to the printing area
    [7]
    7. Height control system of printing substrates according to claim 6, characterized in that the barrier assembly comprises at least one proximity sensor (31) arranged to generate a signal in accordance with detections made in accordance with tilting measures of the honeycombs (27).
    [8]
    8. Height control system of printing substrates according to claim 6 or 7, characterized in that the bases (16) and the panels (27) are jointly arranged so that when the bases (16) are balanced the panels ( 27) are swivel by contact.
    [9]
    9. Height control system of printing substrates according to any one of the preceding claims, characterized in that it comprises height adjustment means including a third motor (21) and two threaded spindles (22), the two threaded spindles (22) being driven by the third motor (21) and each of the threaded spindles (22) being connected at one end to a sheet (9) arranged in correspondence with a side of the lift table (1).
    [10]
    10.- Height control system of printing substrates according to claim 9, characterized in that the pressure assembly is connected to the two plates (9), so that being the two plates (9) displaced, a gap is regulated between the skates (10, 11) and the lift table (1).
    [11]
    11.-Height control system of printing substrates according to claim 9 or 10, characterized in that the barrier assembly is connected to the two plates (9), so that being the two plates (9) displaced a space is regulated between the panels (27) and the support table (1).
    [12]
    12. Height control system of printing substrates according to any one of the preceding claims, characterized in that it comprises a cover set comprising strips (35, 36) developed according to the longitudinal direction of the lift table (1 ) and arranged to limit the localized printing substrates in height
    5 on the support table (1) in correspondence with the printing area.
    [13]
    13. Height control system of printing substrates according to claim 12, characterized in that the strips (35, 36) are two lateral strips (35) and at least one central strap (36), the two lateral strips being ( 35) movable so that they are approximate
    10 or away from each other.
    [14]
    14. Height control system of printing substrates according to claim 13, characterized in that there are two central strips (36), which are configured to be movable so that they are approximate or remote from each other.
    15 9
    27 14 26
    10 9 22
     10 33 26 8 32 33 31 ~
    t ~
    '- <
     one----
    ~ 12
     ~ V I /
    1.1 3 5 F2 5 1.1
    '9
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    同族专利:
    公开号 | 公开日
    PL3363646T3|2021-10-25|
    ES2679894B1|2019-04-02|
    EP3363646B1|2021-04-07|
    EP3363646A1|2018-08-22|
    ES2880153T3|2021-11-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH1152749A|1997-08-04|1999-02-26|Konica Corp|Image forming device|
    US20130127967A1|2011-11-22|2013-05-23|Arkady Palarya|Method and apparatus for loading a printing substrate|
    WO2016084415A1|2014-11-26|2016-06-02|株式会社データ・インフォテック|Inkjet printing apparatus|
    US20160361886A1|2015-06-09|2016-12-15|Kabushiki Kaisha Isowa|Corrugated paperboard sheet manufacturing apparatus|
    AT501863B1|2005-05-25|2007-08-15|Durst Phototech Digital Tech|HOLDING DEVICE FOR INK JET PRINTER|
    法律状态:
    2018-08-31| BA2A| Patent application published|Ref document number: 2679894 Country of ref document: ES Kind code of ref document: A1 Effective date: 20180831 |
    2019-04-02| FG2A| Definitive protection|Ref document number: 2679894 Country of ref document: ES Kind code of ref document: B1 Effective date: 20190402 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201730203A|ES2679894B1|2017-02-20|2017-02-20|SYSTEM OF CONTROL OF HEIGHT OF IMPRESSION SUBSTRATES FOR DIGITAL PRINTING MACHINES|ES201730203A| ES2679894B1|2017-02-20|2017-02-20|SYSTEM OF CONTROL OF HEIGHT OF IMPRESSION SUBSTRATES FOR DIGITAL PRINTING MACHINES|
    PL18157729T| PL3363646T3|2017-02-20|2018-02-20|Height control system for printing substrates for digital printing machines|
    EP18157729.7A| EP3363646B1|2017-02-20|2018-02-20|Height control system for printing substrates for digital printing machines|
    ES18157729T| ES2880153T3|2017-02-20|2018-02-20|Height control system of printing substrates for digital printing machines|
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