• 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 device is comprised of an extrusion die (1) of which the opening (2) is a section without any break in continuity and forming a frieze of concurrent rectilinear or curvilinear segments and is also comprised of a mask (3) having a reciprocating sliding motion in front of the die (1) and provided with a window uncovering only a portion of the section (2) varying with the motion of the mask.
    公开号:SU1658814A3
    申请号:SU874203843
    申请日:1987-12-10
    公开日:1991-06-23
    发明作者:Тротиньон Жан-Пьер
    申请人:Жан-Пьер Тротиньон (FR)；
    IPC主号:
    专利说明:

    The invention relates to extrusion molding of cellular partitions that are used as a core in the manufacture of flat or tubular shaped panels.
    The purpose of the invention is to increase the durability of the partition and reduce the cost of its manufacture.
    FIG. 1-3 schematically shows embodiments of the device front view; Fig. 4 shows a section A A in Fig. 2: Fig. 5 is a variant of the device, allowing the joint extrusion of two facing plates. cellular structure, FIG. 6, an embodiment of the device with means for controlling the thickness of the extrudioelectric
    KO
    product; 7 - section of the extrusion orifice, cross section; Fig. 8 shows a die allowing extrusion of the cellular structure with a longitudinal web, a partial front view; figure 9 - the cell wall partition in the form of a plate, axonometric.
    A device for extruding the cellular partition contains (Figs. 1 and 2) a forming plate element forming the extruder die 1 and having an access hole for product 2 for this purpose. Hole 2 (Fig. 1) is formed by at least one slot in the form of a broken line and, therefore, successive inclined slots 2c, defining between themselves lower and upper peaks and positioned to form a zigzag profile.
    Hole 2 (FIG. 2) is formed by a plurality of parallel lower portions of the slits 2a and a plurality of upper portions of the slits 2b, also parallel and displaced in the horizontal direction relative to the slits 2a. With the exception of the end slits, each of the lower slits is connected by inclined slits 2c with two upper slits 2a, which are framed. Sections 2a and 2b are located on the tops of the broken line. In the same way, the upper slots are connected to the lower slots.
    The shape of the cross section of the hole 2 of the die plate 1 may be different. So, for example, you can make a hole 2, the cross section of which can form a frieze of crossed broken lines, each of the segments that form it can be curvilinear or rectilinear. The die plate 1 can be assembled from several parts to simplify the implementation of the extrusion orifice. When one section of the extruded cell wall is completely surrounded by a hole due to the shape of the throughput hole for the product, this section can be held in place relative to the other parts of the partition that are adjacent to it, by any known means such as thin spacers extending into the throughput hole 2 for the product, or due to the fact that this rod is rigidly connected, inside the die 1, with the bracket, which is also rigidly connected with the die 1 in an area not interfering with the circulation of the product. Regardless of the shape of the passage opening 2 for the product, none of the sections of this section are isolated from other sections in such a way that the full surface of the section / washes no discontinuity
    Before the spinneret 1, the device comprises a second forming element-reflector 3, which can slide along the front side of this spinneret 1, and this sliding is directed along the columns 4 along a surface perpendicular to the extrusion direction. The jack 5 allows the reflector 3 to be given a reciprocating periodic motion along the columns 4 s.
    0 defined and adjustable stroke length. In an embodiment, instead of a jack 5, this movement can provide a device 6 in the form of a driving gear, interacting with a rack 7,
    5 rigidly attached to the reflector 3.
    The device may have means (not shown) allowing the reflector 3 to be pressed (for example, pressure rollers or rollers) to the front side of the die 1,
    0 which it slides, in order to make contact the reflector 3 - die 1.
    The reflector 3 is made with a rectangular window Over the length L and height I. The passage opening 2 of the nozzle 1 partially
    5 is covered by a reflector 3, which passes the product only through the window Za.
    The size of the I window, which separates the near opposite edges, clearly exceeds the width e of the open slots 2c. it
    0 allows the walls of the cellular partition to be extruded with a thickness and a height L, provided that the product is extruded in a direction parallel to a straight, for example, perpendicular to the die 1, which gives
    5 extrudable cell wall three-dimensional character.
    FIG. 1 shows a top view of product P obtained in an extrusion device. During the extrusion operation the reflector
    0 3 makes a continuous, alternating translational motion in front of the partition of the nozzle 1, coincides with the release of the product. In this case, the cross section for the product is constantly changing in its
    5, since at a given moment it is the intersection of the window 3 and with the common hole 2 of the spinneret 1. The shell of this cross section remains constant and identical to the contour of the window behind.
    Therefore, the extruded product (FIG. 9) has the shape of a flat plate with a thickness of I and a width L in which the cells are bounded by a plurality of walls.
    Another example of this product is P (figure 1
    5 without an extrusion die) is formed by a continuous series of quadrangular cells with a square base, obtained by means of a die 1, provided with a hole 2 along a broken line and in which the speed of the variable displacement of the reflector 3
    Before this spinneret 1, it is theoretically assumed that the output velocity of the product is constant, however, only due to the reverse haulage when moving the reflector 3, the speed of the reflector 3 cannot retain an absolutely constant value. The offset range of the window Be is shown between the two break lines L and L2. On product P, the direction of extrusion is indicated by arrow E. It is imperative that the direction of extrusion be parallel to the straight line.
    The shape of the cells is the result, in addition to the initial cross section of the hole 2. A portion of this cross section covered by the Over window during its movement at a speed that can vary during one cycle (there and back) of the sweep and / or change from one cycle to another even with stops between each cycle or each half turn. In this case, window 3 has a rectangular cross section, but the invention relates to any window shape that allows the extrusion of a product of any section. A window in the form of an annular sector allows extruding a partition of a partially cylindrical cross section, intended to form prefabricated panels, in particular, for car bodies. The window may have the shape of a corner, the shape of / j 1 the shape of any profile made by extrusion, and the movement of the reflector 3 adapts to this shape (for example, along the angle bisector of the corner). A standard die with a system of slits over the entire surface may be overlapped by reflectors 3 with different windows. Thus, an extremely cheap set of tools can be used.
    Partition cells are open on the upper and lower sides of the cellular partition. Consequently, they can be coated with a liquid in the direction of the thickness of the septum, which ensures effective cooling of the product after extrusion and uniformity of this cooling. However, by changing the stroke length of the reflector 3, you can get a sealed product with closed cells. In this case, cooling is also carried out simply by applying an adequate liquid to each side of the product.
    The device can be used to extrude a completely cylindrical cell wall in the form of a pipe (Fig. 3). The reflector 3 has an annular window B3, which eccentrically moves around the axis O of the spinneret 1, the opening 2 of which
    is a slot in the form of an annular frieze of the same kind of confusion as the frieze shown in FIG. This movement is related to the variable movement of the reflector 5 (Figures 1 and 2). This is confirmed by the sweep of the restricted sector of the spinnerer 1. The eccentricity of motion is determined depending on the width of the spinneret 1. zone to be expanded. Performing such a device requires connecting the inner and outer parts of the reflector 3, in particular, in the center of the die plate 1 along an axis close to the axis 0, for this purpose, the die plate 1 will be annular.
    5 The resulting cylindrical tube may have a circular cross-section, but it may also take any closed shape to form a cylinder with some kind of base. The movement of the reflector 3 is also adapted to this form.
    When the device according to FIG. 2 is made, the extruder chamber 8 (FIG. 4) is filled with a paste-like material, which is pushed through a hole 2 of the spinneret 1 with a known device (screw feeder) directly behind the reflector 3. The cooling chamber 9 is movable together with the reflector 3. It is filled with cooling liquid, which can circulate between inlet 10 and outlet 11 of chamber 9. The plate of extruded product is removed from chamber 9 in a solid state by exhaust rolls 12 and 13, which are rigidly connected to 5 camera 9, and is intercepted by fixed rollers 14, sufficiently far from rollers 12 and 13 so that the extruded product plate can compensate for the deflection angle of the reflector 3 and the cooling chamber 9 by elastic bending deformation.
    The product thus extruded can be placed between two thin plates to obtain a laminated panel. These plates can be applied to the contact surfaces. They can also be extruded together with the product through an additional die or device similar to the device (Fig. 5). 0 A fixed table can be provided behind the suction rollers 14, on which the product slides on its underside while the filling head of the cells with the expanding core is placed above the product. After this head, the device may contain above the table an upper stationary table, which, together with the first table, forms a tunnel, with or without heating, to fix the expansion of the product during
    molding. In this way, it is possible to automatically obtain a cellular plate of a rigid cellular product filled with gasket material for sound, heat or hermetic insulation.
    In order to obtain a simple device that does not require the use of a complex automatic control system to instantly control the extruder's performance, it is reasonable to provide a cross section of the opening 2 of the extruded product through the die plate 1, the surface of which is open through the window of the reflector 3, remains constant regardless 1. For example, for a cross section of aperture 2, similar to the cross section shown in FIG. 1, and for a window with a height equal to the height of the lower central It is necessary that the cross section of each slit 2c be equal to half the cross section of each slit 2a or 2b, the number of slits 2a being equal to the number of slits 2b and half the number of slits 2c, when they are considered the open window Za, and Each of these parts would have the same law of variation of their cross sections depending on their height.
    In the case where the cross section of the hole 2 does not allow this relationship, it is possible to provide in the die 1 and in the reflector 3 opposite each other and a shut-off valve for the opening of the reflector 3, which is adjustable in its position relative to the section of the opening 2 to ensure the bypass flow, which variable, compensates for flow changes through the Over window. The opening 2 provided in the partition wall 1 should be sufficiently elongated, like opening 15 (FIG. 6), so that chamber 8 is always in communication with the opening provided in the reflector 3.
    The reflector 3 (Fig. 6) may have means for adjusting the height I of the window Za, as a result of which it is possible to manufacture various cellular partitions of constant thickness or one cellular partition of variable thickness using the same tool.
    The movable reflector 3 is formed from several parts, namely, the holding part 16. comprising two upper parallel guides 16a and 16b and two lower parallel guides 17a and 17p, symmetrically converging to each other relative to the horizontal. .Coles one piece of two parts 18g
    18b, which can vertically slide one relative to another and the opposite edges 19a and 19b of which form the longitudinal parallel edges of the window
    reflector 3. The lateral edges 20a and 20b of this window are formed by expanded-portions of parts 18a and 18b, interacting with one part in the direction of their relative movement of removal or
    0 rapprochement If the parts 18a and 18b are moved in the direction A, they approach each other, and the width of the Za window decreases. This width is increased by moving in the opposite direction B. Hole 15, made in the baffle of the die plate 1 and equal to the cross section of the hole 2, is covered with parts 18a and 18b along its entire length, regardless of the position of the reflector 3 during its course, except for the zone that corresponds to the intersection of this hole 15 with a hole 21, made in part 18b. This hole is shaped (triangular) such that the area of the hole 15, which it leaves open, has a variable surface depending on where the parts 18a and 18b are located relative to the guides 16a, 16b, 17a, 17b. Thus, it is possible to compensate for the decrease in the consumption of extruded product between the edges 19a and 19b due to their approach, since this approach as a result of movement in the direction of arrow 4 leads to an increase in the surface of the hole 15, the open hole 21. Enough
    5 correctly determine the shape of the hole 21 depending on the width of the hole 15 and on the shape of the cross section of the hole 2 so that the sum of the product costs passing through the window Z and the hole 21 remains constant and that the flow changes through the window Z are compensated by reverse changes flow through hole 21,
    You can make this compensation by other means, for example by the system
    5 automatically adjusting the speed, rhythm or tempo of the means peculiar to the extruder, passing the product, changing the width of the window.
    A window through the reflector 3 (Fig. 7) shows a separate section of the extrusion section of the opening 2, which contains an annular opening 22 communicating with the slits 2c, with part of the partition 23 on the inner side of this annular fi re of 22 22 connecting it to other parts of the partition. The Za window is shown in the upper position, and its maximum stroke is of magnitude C, with a dotted line 25 indicating the position.
    occupied by the top edge of the window in a lower position. Under these conditions, it can be seen that the central area of the cross section of the opening 2 which contains the annular opening 22 remains permanently open. As a result, extrusion of a single tube occurs, which wave-like penetrates into the thickness of the cellular partition between its upper and lower sides. Thus, the cell wall may contain several tubes passing through it in the longitudinal direction, and these tubes may predominantly form pipelines for the circulation of gas or liquid, in particular, heat transfer fluid,
    It is also possible to extrude a solid or hollow elongated element of any section, which can constitute reinforcement for the cellular partition. From this always open central zone, solid or hollow reinforcement can also be obtained, sliding through the die plate 1 at the same speed as the extrusion velocity of the product. These reinforcements made from a material other than the cellular partition can be flexible, rigid, or stressful. For example, a flexible material perceives these wavy vibrations, and the subsequent tension gives the structure a wavy aspect. The prestressed reinforcement, when stretched, leads to a wavy formation of a septum around the reinforcement. The armature may be an electrical wire.
    An advantageous variant of the output cross section 26 of the orifice 2 of the spinneret 1 (Fig. 8) makes it possible to obtain a cellular structure in which the cells are formed between parallel longitudinal walls 27, 28 connected by bridges 29. This structure is inherent for panels subjected to compression or bending in the longitudinal direction Since parallel walls work in compression for their lower fibers and in tension for their outer fibers, like triangulation beams.
    The cell wall or pipe section 30 shown in FIG. 9 was obtained using the device according to the invention, the extrusion die being made as shown in FIG. 2 or 3. Each cell 31 is bounded by six walls, two of which are longitudinal, parallel to each other and perpendicular to the bottom and the upper surface of the cellular wall. These surfaces are also parallel to the extrusion direction C. The four other walls 31c, 31 and 31e. 31 are transverse with a certain inclination relative to the surfaces 31a, 31b, therefore, relative to the direction Cd and, moreover, are inclined relative to the perpendicular to the thickness of the partition or pipe (in this case, normal to 5 of the outer surface of the pipe). Thus, the cell is multi-faceted with a large lower base and a small upper base adjacent to two identical cells on the same line.
    0 in the transverse direction of the product with its walls 31a and 31b and its other walls adjacent to the four opposite cells. The structure thus determined is very close to the structure in
    5 form of honeycomb and has all its features. The resistance of this structure to shear (relative displacement of the upper surface relative to the lower surface) is clearly higher than the known honeycomb structures. These machines are real retaining arches that counteract this shift in all directions.
    The reflector 3 (Fig. 5) contains, in addition to the Za window, an additional die plate and additional two slots 32 and 33 parallel to the Za window and located on either side of this window. Through the slots 32 and 33, a flat strip product can be continuously extruded, since the inner chamber 8 communicates through the die plate 1 and the openings 34 and 35 with the chambers 36 and 37 made in the reflector 3. The height of the chambers 36 and 37 is that. regardless of the position of the reflector 3, from 5 versts 34, 35, respectively, enter into them without intersection with the aperture 2 of the spinneret 1, which interacts with the window Za. Internal piping 38 and 39, respectively, connect chambers 36 and 37 with slots
    0 32 and 33. Slots 32 and 33 are sufficiently distant from the window Za, so that there is space between the strips 40 and 41 of the extruded product and the cellular structure and so that it can be fitted with devices 42 and 43 for circulating coolant causing the beginning of hardening. Then the strips 40 and 41 are still in a pasty state, pressed on each side of the structure with rollers 44 and 45,
    0 rigidly connected to the reflector 3.
    The strips 40 and 41 may be included in another product other than the product of the core 46. In this case, the holes 34 and 35 are connected to another extruder chamber,
    5 host this other product.
    The slip plane of the reflector 3 on the die 1 is perpendicular to the output direction of the product. You can completely tilt this plane in this direction. In this case, the result will be asymmetry of the cells in the extrusion direction, i.e. if the plane is inclined forward and downward relative to the extrusion direction, the product (FIG. 9) has, for each cell, nearly vertical walls 31c and 31 of small length while the walls 31e and 31 are very long and sloping. In this case, the product has a certain anisotropy, which may be of interest for certain applications.
    The reflector 3 can be made of several independent parts moving relative to the die 1. The reflector (figure 2) can be divided into three parts: one fixed central part, which constantly opens the central slots 2c, and two moving parts with each sides of this central part. The speeds of these end parts can be different and two cellular partitions of different cellular composition can be obtained, combined with a central part, which can form a longitudinal joint of two plates or a connecting easily separable part.
    The annular reflector 3 may have an annular window For divided into continuous reflective sectors. If the movement of the reflector 3 is only eccentric sliding, partitions with cylindrical sections are obtained, the longitudinal edges of which are parallel to the axis of extrusion. The movement of the reflector 3 may include rotation about its axis. In this case, the extruded edges of the cylindrical sections are spiral.
    The extruding of the tubular septum can be carried out through a plane inclined with respect to the extrusion direction.
    The product emerging from this plane has a geometric structure of the cells, similar to the indicated structure and has an elliptical section.
    In addition, as in the case of using (Fig. 5) a flat partition when co-extruding the plates forming the membrane, it is possible to jointly extrude tubular membranes for a tubular cellular partition. In particular, in order to coat the inside of the pipe, it is possible to provide for extrusion of the set inside the cellular partition.
    In the embodiment of FIG. 7, the advantage is an increase in the stroke length C of the reflector 3 to intersect it with the tube 22. Thus, this tube is communicated with each cell. In this case, in the resulting product, the outflow of the substance (drainage) can be carried out by these ways of communication. In the direction transverse to the extrusion direction, the cells are not communicating. The relative movement of the reflector 3 and the nozzle 1 can be expressed as the movement of the movable nozzle 1 behind the fixed reflector 3.
    Three-dimensional cellular product can
    used as cores for panels, pipes or partitions, as well as gratings, various reinforcement for agriculture for filtering, drainage. It can also form a substrate of heat and sound insulating materials, has numerous qualities for its use in construction, in transport or in other technical areas, in
    in particular, when it includes reinforcing elements, nozzles, or when it is extruded from noble materials or from combinations of materials with different characteristics (co-extrusion).
    In this connection, the invention is not limited to the extrusion of thermoplastic or thermosetting plastic, reinforced or unamplified plastics. The invention is suitable
    for any material, the hardening of which can quickly occur under the action of a corresponding external agent (cold, radiation, heating), and is also used in alloys and, in particular, in certain forms of the thixotropic alloy, the pasty state of which can be close to the hardening point. As another material can also be called clay, food compositions such as
    pastes or biscuits.
    权利要求:
    Claims (11)
    [1]
    Claim 1. Device for extruding a cellular partition containing two forming elements mounted slidably relative to each other along a surface perpendicular to the direction of extrusion, which is parallel to a straight line, in a mode of periodic movement, one of which is made in the form of a die with a passage opening for the passage of a product having at least one slot in the form of a broken line with a width,
    5 forming the thickness of the longitudinal walls between the cells, and the other forming element is designed as a reflector with a window for partially opening the orifice of the spinneret between its nearest opposite edges defining the thickness
    Cellular partition, characterized in that, in order to increase the strength of the partition and reduce the cost of its manufacture, the broken line of the slot is made in the form of along a midline parallel to the nearest edges of the window, inclined segments placed with a zigzag profile, measured between its opposite edges, was chosen to be larger than the width of the slot.
    [2]
    2, Device pop.1, characterized by the fact that the slot is made with parallel sections located on each vertex of the polyline.
    [3]
    3. The device according to claim 2, characterized in that the window is made annular, and the reflector is mounted with the possibility of rotating eccentric slip around the die-shaped orifice of the ring-shaped axis of symmetry axis for periodic movement of the reflector.
    [4]
    4, the apparatus according to claim 2, characterized in that the sum of the flow sections, the cut-off slots placed within the window in any position thereof, is constant.
    [5]
    5. Pop-1 device, characterized in that the reflector is made of two parts, separated from each other by a controlled distance to form a rectangular window between them.
    [6]
     6. A device according to claim 5, characterized in that in the spinneret a bypass opening is made with a cross section depending on the width of the window.
    [7]
    7. The device according to claim 6. characterized by the fact that in the reflector there is an opening of variable cross section, placed
    opposite the bypass hole of the die to overlap it and maintain a constant sum of the throughput section of the slot.
    [8]
    8. The device according to claim 2, characterized in that the die is made at least one hole with a variable cross section, communicated with the slot and placed With the possibility of at least partial location in the window zone in each position of the reflector.
    [9]
    9. The device of claim 8, characterized in that the hole is made annular, and the section of the die, adjacent on the inside to the specified hole, is attached from the inside to the die, surrounding the hole from the outside, by means of transverse connecting struts.
    [10]
    10. Device pop. 1, characterized in that it is provided with an additional company with additional slots parallel to each other for forming strips made in the reflector and located on both sides of its window, and rollers placed at each additional cut for strips on the molded partition, with additional slots communicated with the outlet of the product through the die plate.
    [11]
    11. Cellular partition obtained by extrusion of a pasty product through a die plate, followed by its hardening outside of the die, containing cells limited by each row of walls located transversely to the thickness of the partition, in order to increase the strength of the partition and reduce the cost of it making at least two of the walls of the partition are inclined relative to the normal direction of the sides of the partition and relative to the longitudinal direction of the partition.
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    Editor O. Golovach
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    同族专利:
    公开号 | 公开日
    AU591770B2|1989-12-14|
    EP0263850A1|1988-04-20|
    ZA872560B|1987-11-25|
    IL82141A|1991-05-12|
    CN87102766A|1987-10-21|
    OA08784A|1989-03-31|
    IL82141D0|1987-10-30|
    JPS63502976A|1988-11-02|
    FR2597026A1|1987-10-16|
    IN169602B|1991-11-23|
    FR2597026B1|1988-12-09|
    KR950005722B1|1995-05-29|
    AU7167787A|1987-11-09|
    GR870497B|1987-06-30|
    EP0263850B1|1991-06-12|
    BR8707262A|1988-04-19|
    US5028466A|1991-07-02|
    ES2007606A6|1989-07-01|
    WO1987006181A1|1987-10-22|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8605216A|FR2597026B1|1986-04-11|1986-04-11|DEVICE FOR MANUFACTURING A FOAM PLATE, RESULTING FOIL PLATE|
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