• 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:
    The invention relates to a welding wire feed roller (3, 4) for conveying a welding wire (6) having a receiving opening (10) for receiving a receiving pin (8, 9) and a running surface (12) for the welding wire (6) and a feed device (1). for conveying a welding wire (6) with a drive motor (2), at least two spigot spigots (8, 9) arranged at a distance (b) from each other and at least two welding wire sprockets (10) mounted on the spigots (8, 9) via corresponding receptacles (10). 3, 4) with running surfaces (12) for the welding wire (6). To achieve improved conveying properties, even with different welding wires (6), a region which can be elastically deformed in the radial direction is arranged between the running surface (12) and the receptacle (10) of the welding wire feed rollers (3, 4).
    公开号:AT515236A1
    申请号:T50855/2013
    申请日:2013-12-23
    公开日:2015-07-15
    发明作者:
    申请人:Fronius Int Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a welding wire feed roller for conveying a welding wire, having a receiving opening for receiving ei¬nes receiving pin and a running surface for the welding wire and a feeding device for conveying a welding wire, with a drive motor, at least two at a distance zuein¬ander arranged spigot and at least two ent ¬responding recordings on the receiving pin mounted Schweißdrahtförderrollen with running surfaces for the welding wire.
    Feed devices for conveying welding wires usually comprise two conveying rollers, a pressure roller and a counter-roller, between which the welding wire is clamped and, upon rotation of the welding wire conveying rollers, is moved to the desired location, for example the welding torch.
    For example, AT 229 673 B describes a feed device in which the welding wire is clamped and conveyed between two oppositely arranged conveyor rollers.
    A feed device with two pressure rollers and counter rollers is described in DE 293 526 A5. Thereby, an increased contact pressure on the welding wire to be conveyed and a better continuous conveyance should be achieved.
    In all known such devices, basically rigid welding wire feed rollers are used, which are usually made of metal and have, for example, a longitudinal groove for guiding the welding wire or are provided with a roughened surface or a coating in order to increase the friction between the welding wire and the conveying rollers. For optimal delivery of the welding wire, a certain contact pressure is required. In previous Förderrol¬len the contact pressure is exerted only on a very small area, virtually in one point, on the welding wire, which can lead to Ver¬formungen of the welding wire.
    With different diameters of the welding wires, it is necessary to use different welding wire feed rollers or to provide adjusting devices, in order in each case to achieve optimum contact pressure forces and thus optimal conveying conditions.
    The object of the invention is to provide an abovementioned welding wire feed roller and a feed device for conveying a welding wire, by means of which the conveying properties can also be improved with different welding wires and at the same time a simple construction is provided.
    The object of the invention is achieved by an above-mentioned welding wire feed roller, in which between the running surface and receiving a radially elastically deformable area is arranged. Optimum conveying properties can be achieved by the welding wire feed rollers that can be deformed elastically, at least in one area, since the welding wire is clamped over a larger area and thus no punctiform forces occur. The fact that the deformation of the welding wire feed rollers or their treads better conform to the welding wire to be conveyed, creates an enlarged contact surface between welding wire feed roller and welding wire, resulting in a lower surface pressure on the welding wire without thereby reducing the achievable conveying force on the welding wire , Due to the lower surface pressure of the welding wire is treated gently, one especially prevents the electrical contact adversely acting aus¬wirkende violation of its surface or strongly re¬duziert and the welding wire from adverse deformation preserved. Furthermore, the contact pressure does not have to be readjusted and adjusted every time the welding wire is changed. Up to now, an adjustment of the contact pressure of the conveyor rollers had to be carried out at each welding wire change in order to optimally clamp or convey the welding wire. During this time, the welding system could not be used productively. Also, manually adjusting the contact pressure creates the risk of misadjustment due to nonoptimal selection of the parameters. In the case of the welding wire conveying roller according to the invention, the contact pressure force is automatically set to an optimum value within certain limits of the welding wire diameter. It is also advantageous that tolerance differences of the welding wire are compensated.
    In this case, the elastically deformable region of the welding wire feed rollers can be formed by recesses. These Ausnehmun¬gen or gaps in the welding wire feed rollers effect the desired deformation under radial pressure load through which the welding wire, depending on the diameter and nature, can be optimally clamped and conveyed. Since preferably two-equal welding wire feed rollers are used, the required proportion of the deformation is equally shared between both welding wire feed rollers. The center of the weld wire remains unchanged at the same position between the two weld wire feed rolls, both with the use of thin and thick welding wires. This is important insofar as the welding wire, after leaving the Schweißdrahtförderrol¬lenpaares without friction and without damage or deformation centrally in a subsequent guide sleeve or the like. Einlaufenkann.
    As an alternative to the above-mentioned recesses or slots in the welding wire feed rollers, the elastically deformable region of the welding wire feed rollers may also be formed by movably between an outer ring forming the tread and a spiral arm arranging the receptacles of the inner ring.
    The recordings of the welding wire feed rollers can be tapered, preferably cone-shaped.
    To achieve certain deformation properties in the area of the treads of the welding wire feed rollers, the tread may have a surface pattern.
    At least the elastically deformable region of the Schweißdrahtför¬derrolle may be made of spring steel or nonmetallic Ma¬terial, in particular plastic. Elastomers are particularly suitable as plastic. In order to prevent punctiform indentation or cutting of the welding wire onto the running surface, in particular in the case of these welding wire conveying rollers consisting of an elastomer, the running surface of the welding wire conveying roller can be banded with a resistant material, in particular spring steel.
    The object according to the invention is also achieved by a feed device for conveying a welding wire, in which a welding wire feed roller between the running surface and the receptacle has a region that is elastically deformable in the radial direction and the welding wire feed rollers are pressed against one another or against the welding wire via the receiving pins , Optimum conveying properties can be achieved by the at least one welding wire feed roller with the elastically deformable region, since the welding wire is clamped over a larger area and thus no punctiform forces occur. Also with this feed device welding wires with different diameters or cross-sectional shapes can be conveyed without the need for manual adjustments and waiting times for adjusting or changing the welding wire feed rollers. The elimination of a change process of the welding wire feed rollers, as well as a manual adjustment of the optimum pressure, overall represents a substantial simplification and a significant time saving. Further advantages can be taken from the above description of the welding wire feed rollers.
    As already mentioned above in the case of the welding wire feed rollers, the elastically deformable region of at least one welding wire feed roller can be formed by recesses or slots or by spiral arms arranged between an outer ring forming a running surface and an inner ring forming the receptacle.
    The recordings of the welding wire feed rollers can be tapered, preferably cone-shaped.
    Advantageously, the spigots are tapered according to the Aus¬ formation of the receptacles of the welding wire feed rollers to their free ends, preferably conical, ausgebildet.Dadurch the welding wire feed rollers can be easily plugged and pressed against each other.
    As already mentioned above, the running surface of at least one welding wire feed roller may have a surface pattern.
    At least the elastically deformable region of the welding wire feed rollers can be made of spring steel or else of non-metallic material, in particular plastic.
    The distance of the spigot to each other is preferably fix.Für an optimal adjustment of the contact pressure on the Schwei߬ wire, it is advantageous if the mounted in the feed device welding wire feed rollers also have a deformation, if no welding wire is disposed therebetween.
    This is achieved in that the sum of the radii of the unloaded welding wire feed rollers is greater than the Achsab¬stand the spigot.
    The invention will be explained in more detail with reference to the embodiments illustrated in the accompanying drawings. In it show:
    1 shows the feed device with welding wire feed rollers according to a first embodiment variant /
    FIG. 2 shows the feed device according to FIG. 1 in side view; FIG.
    FIG. 3 shows the feed device according to FIG. 1 in plan view; FIG.
    4 shows the feed device according to FIG. 1 with the welding wire feed rollers in a partially sectioned illustration in front view; FIG.
    5a and 5b show an embodiment of a Schweißdrahtförderrol¬le with recesses in an oblique view from the front and back;
    6 shows another embodiment of a Schweißdrahtförderrol-le with spiral arms in an oblique view. and
    Fig. 7 shows another embodiment of a Schweißdrahtförderrol-le with spiral arms in an oblique view.
    1 shows a feed device 1 with a drive motor 2 and a connected gear stage 5 and an embodiment of the inventive welding wire feed rollers 3, 4 for conveying the welding wire 6. The welding wire feed rollers 3, 4 according to the invention achieve complete clamping of the welding wire 6 to be conveyed. An adjusting unit for adapting the advancing device 1 to the welding wire 6 is not required due to the elasticity of the welding wire conveying rollers 3, 4 according to the invention.
    FIG. 2 shows the feed device 1 according to FIG. 1 in a side view for a clearer illustration of the guidance of the welding wire 6 through the guide sleeve 7 and the welding wire feed rollers 3 4. The drive motor 2 drives the gear stage 5, which in turn sets at least one of the receiving pins 8, 9, on which the welding wire feed rollers 3, 4 are mounted, in rotation. The gear stage 5 is designed so that at least one of the receiving pins 8, 9 is driven. Since in the inventive feed device 1 both Schweißdrahtförder¬ roles 3, 4 or spigot 8, 9 are mounted at a fixed distance b (see Fig. 4) to each other, all required for the drive components of the gear stage 5 fixed and in a closed System can be arranged. Accordingly, less maintenance of the drive or gear stage 5 is required.
    Fig. 3 shows the feeding device 1 according to Figures 1 and 2 in plan view, from which the welding wire feed rollers 3, 4 vorgelagerte guide sleeve 7, which ensures the correct inlet of the welding wire 6, can be seen. The welding wire 6 is thus fed via the guide sleeve 7 to the welding wire conveyor rollers 3, 4 at those points at which the optimum conveyance can be achieved. The welding wire 6 may vary in shape and diameter. Usually, the welding wire 6 is substantially round in shape, but it may, for example, also be formed as a flat wire of rectangular cross section. With the welding wire feed rollers 3, 4 according to the invention, in principle welding wires 6 can be conveyed with all the currently known cross sections.
    The welding wire feed rollers 3, 4 are designed such that a clamping of the welding wire 6 with simultaneous Verfor-mung the welding wire feed rollers 3, 4 takes place. The clamping is not achieved as in conventional systems via a manual Justier¬ unit, but in that the Schweißdrahtförder¬ rollers 3, 4 have recesses 11 which allow deformation under pressure load and thus generate a clamping action on the welding wire 6. This deformation can be seen by taking "X" in FIG. marked area. It can be seen that the welding wire feed rollers 3, 4 are not uniformly round in this region X, but rather that a deformation sets in which ultimately permits clamping over a larger area for conveying the welding wire 6. The clamping and deformation of the welding wire feed rollers 3, 4 are made possible by the cone-shaped receptacle 10 of the welding wire feed rollers 3, 4 and the corresponding conically shaped receiving pegs 8, 9 on the gear stage 5. When the welding wire feed rollers 3, 4 are placed on the receiving pins 8, 9, the conveying rollers 3, 4 are forced against each other towards the center or to the longitudinal axis of the welding wire 6. Thus, the welding wire feed rollers 3, 4 are pressed against one another or against the welding wire 6 via the receiving pegs 8, 9. Between the running surface 12 and the receiving opening 10 of at least one welding wire feed roller 3, 4 lies an elastically deformable region which is independently reversible, ie the tendency has to return to its original form.
    4 shows an embodiment of the welding wire feed rollers 3, 4 in partially cut form and the welding wire 6 to be conveyed and the receiving pins 8, 9 in the front view. The guide sleeve 7 for guiding the welding wire 6 between the welding wire feed rollers 3, 4 is also visible the location intended for optimal clamping. The welding wire 6 is inserted in the area between the welding wire feed rollers 3, 4, in which an optimum friction by the deformation can arise. This is essentially the case in the middle. The cone-shaped receiving pins 8, 9, which are set in rotation by the gear stage 5 or the drive motor 2, are also clearly visible. Instead of a cone-shaped receiving pin 8, 9 and a conical receptacle 10, a formation in the form of a pyramid-shaped square is also possible. Likewise, keyways may be attached to the cone, by means of which the torque is transmitted. The torque required to convey the welding wire 6 can thus be transmitted non-positively or positively. In the illustrated embodiment, a frictional transmission takes place. Due to the tapering shape of the receiving pin 8, 9, the welding wire feed rollers 3, 4 can be pretensioned during assembly.
    On the receiving cone 8, 9, the Schweißdrahtförderrollen3, 4 are placed with the appropriately designed receptacle 10 and fixed, for example with a screw 18. 3, the partial deformation of the welding wire feed rollers 3, 4 results from the fact that the clamped welding wire 6 causes a back pressure, which in turn leads to the recesses 11 or slots of the welding wire feed rollers 3 4, ie the distance between the running surface 12 and the receptacle 10 of the welding wire feed roller 3, 4 is reduced.
    The welding wire 6 is thus conveyed through the guide sleeve 7 between the welding wire feed rollers 3, 4 and clamped surface with a be¬stimmten force. As soon as the welding wire feed rollers 3, 4 are set in rotation, the welding wire 6 is conveyed. The clamping of the welding wire 6, which results from the deformation of the welding wire feed rollers 3, 4, increases the friction to continuously convey the welding wire 6.
    The optimal clamping of a welding wire 6, for example, 0.8 mm in diameter, is achieved in that the Schweißdraht¬ conveyors 3, 4 have a defined center distance b. The interaxis b of the axes of the welding wire feed rollers 3, 4 is fixed and can not be changed in contrast to known systems. An adjustment of the center distance b is in contrast to the hitherto in use feed devices 1 for welding wires 6 is not given or not necessary.
    If welding wires 6 with a larger diameter are conveyed with the welding wire feed rollers 3, 4 according to the invention, a greater deformation of the welding wire feed rollers 3, 4 and a greater contact pressure on the welding wire 6 will follow. For example, if a welding wire 6 of 1.2 mm diameter is used, then this becomes Welding wire 6 with respect to a 0.8 mm welding wire 6 clamped with greater force, because the verformba¬ren welding wire feed rollers 3, 4 wer¬den to an increased extent. Accordingly, the area over which the clamping of the welding wire 6 takes place increases. Depending on the shape and diameter of the welding wire 6, the clamping force becomes "automatic", so to speak. customized. In any case, the original distance a, ie before the welding wire 6 is located between the welding wire feed rollers 3, 4, must be smaller than the diameter of the smallest welding wire 6 used, otherwise the effect according to the invention can not be realized. The distance a results from the axial distance b and the diameter of the conveyor rollers 3, 4.
    Even if no welding wire 6 is arranged between the Schweißdrahtförder¬ roles 3, 4, there is already a deformation of the Schweißdrahtförderrollen 3, 4 in the area X (see Fig. 3), since the welding wire feed rollers 3, 4 in the area X stir each other, because the center distance b is smaller than twice the radius or diameter of the welding wire feed rollers 3, 4. As soon as a welding wire 6 is guided between the welding wire feed rollers 3, 4, a distance a is set automatically, which corresponds essentially to the diameter or the corner of the welding wire 6. The distance a can influence the respective pressure conditions on the welding wire 6.
    It makes sense, however, distance a should be slightly smaller than the diameter of the smallest used welding wire 6, since it requires at least a low bias and a Anpress¬druck. If the diameter of the welding wire 6 were equal to the distance a, then theoretically no contact pressure is given and the welding wire 6 can not be conveyed.
    In the following, exemplary variants of the structure of the welding wire feed rollers 3, 4 will be described. Thus, FIGS. 5a and 5b show an exemplary embodiment of the welding wire feed roller 3, 4, for example of spring steel. The welding wire feed rollers 3, 4 are constructed so as to be deformable and to exhibit a quasi-fully elastic behavior, that is, their own tendency to resume the original shape, so that the above-described effect can be realized. The welding wire feed rollers 3, 4 are one-piece and constructed of homogeneous material. The deformability is achieved in that the welding wire feed rollers 3, 4 ge seen from the top, radially circumferential recesses 11 and slots have.
    The recesses 11 are circumferentially distributed at regular Winkelabstän¬ each other and extend from a part of the running surface 12 via the correspondingly shaped
    Welding wire feed rollers 3, 4 and thus realize a functionally effective deformation of the tread 12. In order to make it possible to deform the tread 12 or the welding wire feed rollers 3, 4, the intermediate spaces formed by the recesses 11 must exist, which reduces under pressure load and allow deformation in an effective order of magnitude.
    However, in order to ensure the strength of the welding wire feed rollers 3, 4, the recesses 11 may only reach a certain depth, for example two thirds of the height of the tread 12.
    In the welding wire feed rollers 3, 4 can be arranged on both sides, ie on the front and back, recesses 13, which are also traversed by the recesses 11, sobeibei radial pressure load a corresponding deformation ermög¬licht.
    The variant embodiment of the welding wire feed roller 3, 4 according to FIG. 6 is composed of circumferential spiral arms 14. The spiral arms 14 are hooked in an inner ring 15 and extend arcuately from the inner ring 15 to an outer ring 16 where they are in turn hooked. On the outer side of the outer ring 16 is the tread 12. The resulting between the spiral arms 14 spaces allow the deformation of the Druck¬rolle 3, 4 at radial pressure load on the outer ring 16.So then a welding wire 6 with arbitrary diameter zwi¬schen the Schweißdrahtförderrollen 3, 4, the outer ring 16 deforms via the spiral arms 14 by the compressive load that results. The pressure on the welding wire 6 is automatically adjusted to its diameter. The number, shape, thickness and elasticity of the spiral arms 14 can be varied. The spiral arms 14 may be made of metallic or non-metallic material, such as plastic.
    FIG. 7 shows a variant of the welding wire feed roller 3, 4 with spiral arms 14, the number of which is opposite to the embodiment according to FIG
    6 is reduced and whose thickness is increased compared to the variant shown in FIG. 6.
    In all of the welding wire feed rollers 3, 4, the tread 12, which is in direct contact with the welding wire 6, may be made different, for example, smooth or with a certain surface pattern 17, as shown in Fig. 7. Such a surface pattern 17 can provide optimum deformation behavior and optimum power transmission can be achieved. The surface pattern 17 may, for example, have elevations and depressions corresponding to FIG. 7, whereby the deformability but also the necessary strength or rigidity is ensured.
    The welding wire feed rollers 3, 4 according to the invention may be made of different materials depending on the welding wire 6 used (e.g., aluminum welding wire or steel welding wire). Also, the dimensions and diameter of the welding wire feed rollers 3, 4 may vary to accommodate the different requirements of friction and pressure. Thus, an aluminum welding wire with a different diameter of the inventive welding wire feed rollers 3, 4 can be operated as welding wire feed rollers 3, 4 for a steel welding wire. In this respect, the distance a may also vary. All embodiments have in common that between the running surface 12 of the Schweißdraht¬förderrollen 3, 4 and the preferably tapered Aufnahme¬zapfen 8, 9 and the conical receptacles 10 of the welding wire conveyor rollers 3, 4 is an elastically deformable region formed, for example, by the described recesses 11 or slots and the deformability of the welding wire feed rollers 3, 4 ensured.
    权利要求:
    Claims (16)
    [1]
    Welding wire feed roller (3, 4) for conveying a welding wire (6), having a receiving opening (10) for receiving a receiving pin (8, 9) and a running surface (12) for the welding wire (6), characterized in that a radially elastically deformable region is disposed between the tread (12) and the receptacle (10).
    [2]
    2. Welding wire feed roller (3, 4) according to claim 1, characterized in that the elastically deformable region is formed by recesses (11).
    [3]
    3. Welding wire feed roller (3, 4) according to claim 1, characterized ge indicates that the elastically deformable region by be¬weglich between an outer ring (16) forming the tread (12) and an inner ring (15) forming the receptacle (10) ) arranged spiral arms (14) is formed.
    [4]
    4. Welding wire feed roller (3, 4) according to one of claims 1 to 3, characterized in that the receptacles (10) are tapered, preferably conical, are formed.
    [5]
    5. Welding wire feed roller (3, 4) according to one of claims 1 to 4, characterized in that the running surface (12) has a Oberflä¬ chenmuster (17).
    [6]
    6. Welding wire feed roller (3, 4) according to one of claims 1 to 5, characterized in that at least the elastically deformable region consists of spring steel.
    [7]
    7. Welding wire feed roller (3, 4) according to one of claims 1 to 6, characterized in that at least the elastically deformable region of non-metallic material, in particular plastic, consists.
    [8]
    8. Feed device (1) for conveying a welding wire (6), with a drive motor (2), at least two at a distance (b) mutually arranged receiving pin (8, 9) and at least two via corresponding receptacles (10) on the receiving pin (8 , 9) mounted welding wire feed rollers (3, 4) with Laufflä¬chen (12) for the welding wire (6), characterized in that at least one welding wire feed roller (3, 4) between the Lauf¬fläche (12) and the receptacle (10) a Having radially elastically deformable region in the radial direction, and the Schweißdraht¬förderrollen (3, 4) via the receiving pins (8, 9) are pressed against each other.
    [9]
    9. Feed device (1) according to claim 8, characterized gekennzeich¬net that the elastically deformable region of at least one welding wire feed roller (3, 4) by recesses (11) is formed.
    [10]
    A feed device (1) according to claim 8, characterized in that the elastically deformable portion of at least one welding wire feed roller (3, 4) is moveable between an outer ring (16) forming the tread (12) and an inner ring forming the receptacle (10) (15) arranged spiral arms (14) is formed.
    [11]
    11. Feed device (1) according to one of claims 8 to 10, characterized in that the receptacles (10) of the Schwei߬drahtförderrollen (3, 4) tapered, preferably conical, are formed.
    [12]
    12. Feed device (1) according to claim 11, characterized gekenn¬zeichnet that the receiving pin (8, 9) corresponding to the Aus¬ formation of the receptacles (10) of the welding wire feed rollers (3, 4) tapering to the free ends, preferably conical, from ¬gebildet are.
    [13]
    13. Feed device (1) according to one of claims 8 to 12, characterized in that the running surface (12) of at least one welding wire feed roller (3, 4) has a surface pattern (17).
    [14]
    14. Feed device (1) according to one of claims 8 to 13, characterized in that at least the elastically deformable region of the welding wire feed rollers (3, 4) consists of spring steel.
    [15]
    15. Feed device (1) according to one of claims 8 to 14, characterized in that at least the elastically deformable area of the welding wire feed rollers (3, 4) consists of non-metallic material, in particular plastic.
    [16]
    16. Feed device (1) according to one of claims 8 to 15, characterized in that the distance (b) of the receiving pin (8, 9) is fixed to each other.
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    同族专利:
    公开号 | 公开日
    AT515236B1|2015-12-15|
    DE102014225991A1|2015-06-25|
    CN104722972A|2015-06-24|
    CN104722972B|2017-04-12|
    US20150174682A1|2015-06-25|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50855/2013A|AT515236B1|2013-12-23|2013-12-23|Welding wire feed roller and feed device for conveying a welding wire|ATA50855/2013A| AT515236B1|2013-12-23|2013-12-23|Welding wire feed roller and feed device for conveying a welding wire|
    DE102014225991.6A| DE102014225991A1|2013-12-23|2014-12-16|Welding wire feed roller and feed device for conveying a welding wire|
    US14/578,782| US20150174682A1|2013-12-23|2014-12-22|Welding wire conveyor roller and feeding device for conveying welding wire|
    CN201410806475.XA| CN104722972B|2013-12-23|2014-12-22|Welding wire conveyor roller and feeding device for conveying welding wire|
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