Polyethylene steel wire composite sheet extrusion die

Abstract

A polyethylene steel wire composite sheet extrusion die is composed of a front die body, a rear die body and a bottom die body which are installed on an extruder, a wire feeding hole is formed in the rear die body, a right-angle guide groove is formed between the front die body and the rear die body, the right-angle guide groove is communicated with an extrusion opening of the extruder, a horizontally-arranged extrusion groove is formed between the front die body and the bottom die body, and the extrusion groove is communicated with the right-angle guide groove. The wire feeding holes are filled with the steel wires, feeding of the steel wires can be achieved through a wire feeder, the composite sheet with the steel wires can be directly manufactured through the extrusion die, time consumption and cost expenditure of an original manufacturing process are reduced, and the labor intensity of workers can be effectively relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet extrusion dies, in particular to a polyethylene-steel wire composite sheet extrusion die. Background Art

[0002] In the current pipe production, composite pipes with superior performance are generally obtained by spiral winding and heat-sealing of sheets. In order to further improve the strength of the pipe, steel wire needs to be added to the sheet. The existing process operation is to make the sheet through an extrusion die, then lay the steel wire between the two layers of sheets, and heat and melt the surface of the sheet in contact with the steel wire and heat-seal to obtain a sheet filled with steel wire. The extrusion dies on the market cannot directly produce sheets with steel wire. The existing production process takes a long time, increases the labor intensity of the production personnel, and significantly increases the production cost. Summary of the invention

[0003] The utility model aims to provide a polyethylene-steel wire composite sheet extrusion die, which can directly produce composite sheet with steel wires and solve the problems in the prior art.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a polyethylene steel wire composite sheet extrusion die, comprising a front die, a rear die and a bottom die installed on an extruder, the front die is installed on the extruder through a first bolt, the rear die is installed on the extruder through a second bolt, a plurality of connecting threaded holes are provided at the lower end of the rear die, a long strip hole corresponding to the connecting threaded holes is provided on the bottom die, a third bolt is installed in the corresponding connecting threaded holes and the long strip hole, and the height position of the bottom die relative to the rear die can be adjusted by loosening the third bolt, the rear die is also provided with a plurality of horizontally arranged wire feeding holes, a right-angle guide groove is formed between the front die and the rear die, a horizontally arranged extrusion groove is formed between the front die and the bottom die, the extrusion groove and the right-angle guide groove are connected, the outlet end of the wire feeding hole is located in the right-angle guide groove, and the composite sheet with steel wire can be directly extruded in the extrusion groove. An inclined surface is provided on one end of the upper side surface of the bottom die close to the right-angle guide groove, and when the bottom die is adjusted in height vertically, the lowest end of the inclined surface will not exceed the bottom position of the right-angle guide groove. The front mold is provided with a first through hole matched with the first bolt, and the rear mold is provided with a countersunk hole matched with the second bolt. The front mold is provided with a U-shaped through groove matched with the first bolt, and the screw head of the first bolt can press the front mold onto the extruder. The rear mold is installed with a detachable wire hole block, wherein the rear mold is provided with a slot matched with the wire hole block, and the wire hole block is provided with a plurality of horizontally arranged wire feeding holes, and the bottom of the wire hole block is provided with a positioning threaded hole, and a second through hole is provided on the lower side of the rear mold corresponding to the position of the positioning threaded hole, and a fourth bolt is matched and installed in the second through hole and the positioning threaded hole, and a pull ring is also provided on the end face of the wire hole block, and the pull ring is located on the outer side of the rear mold. After removing the fourth bolt, the wire hole block can be taken out of the slot by pulling the pull ring.

[0005] The positive effect of the utility model is that the polyethylene-steel wire composite sheet extrusion die described in the utility model is composed of a front die, a rear die and a bottom die installed on an extruder, a wire feeding hole is provided on the rear die, a right-angle guide groove is formed between the front die and the rear die, the right-angle guide groove is connected with the extrusion port of the extruder, a horizontally arranged extrusion groove is formed between the front die and the bottom die, the extrusion groove is connected with the right-angle guide groove, the wire feeding hole is filled with steel wire, and the steel wire can be fed by a wire feeder. The composite sheet with steel wire can be directly produced by the above-mentioned extrusion die, which not only reduces the time consumption and cost expenditure of the original production process, but also effectively reduces the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0007] Figure 2 It is the front view of the utility model;

[0008] Figure 3 yes Figure 2 Right view of;

[0009] Figure 4 It is a structural diagram of the upper die;

[0010] Figure 5 It is a cross-sectional schematic diagram of the upper die;

[0011] Figure 6 It is a schematic diagram of the structure of the rear mold;

[0012] Figure 7 It is a cross-sectional schematic diagram of the rear mold;

[0013] Figure 8 It is a structural diagram of the bottom mold;

[0014] Fig. 9 It is a cross-sectional schematic diagram of the bottom mold;

[0015] Fig.10 This is a schematic diagram of the state where the bottom mold is adjusted upward to the maximum position;

[0016] Fig.11 It is a schematic diagram of the structure in which a U-shaped through groove is provided on the front mold;

[0017] Fig.12 It is a schematic diagram of the structure of the wire hole block provided on the rear mold;

[0018] Fig.13 It is a cross-sectional schematic diagram of the thread hole block set on the rear mold. DETAILED DESCRIPTION

[0019] The utility model discloses a polyethylene steel wire composite sheet extrusion die, such as Figure 1-3 As shown, it includes a front mold 1, a rear mold 2 and a bottom mold 3 installed on the extruder. The dotted line in the figure indicates the extrusion port position of the extruder. The front mold 1 is installed on the extruder through a first bolt 4, and the rear mold 2 is installed on the extruder through a second bolt 5.

[0020] like Figure 4-9 As shown, a plurality of connecting threaded holes 6 are provided at the lower end of the rear mold 2, and long strip holes 7 corresponding to the connecting threaded holes 6 are provided on the bottom mold 3, and third bolts 8 are installed in the corresponding connecting threaded holes 6 and the long strip holes 7. Tightening the third bolts 8 can press and fix the bottom mold 3 on the rear mold 2, and loosening the third bolts 8 can adjust the height position of the bottom mold 3 relative to the rear mold 2.

[0021] The rear die 2 is also provided with a number of horizontally arranged wire feeding holes 9, in which steel wires can be placed, and the steel wires can be fed into the unformed sheet through a wire feeder. A right-angle guide groove 10 is formed between the front die 1 and the rear die 2, and the right-angle guide groove 10 is connected to the extrusion port of the extruder. To ensure the normal extrusion of the sheet, an arc-shaped smooth transition is provided at the bend of the right-angle guide groove 10. A horizontally arranged extrusion groove 11 is formed between the front die 1 and the bottom die 3, and the extrusion groove 11 is connected to the right-angle guide groove 10. When the height position of the bottom die 3 relative to the rear die 2 is adjusted, that is, the vertical space of the extrusion groove 11 is adjusted, and then the thickness of the extruded sheet is adjusted.

[0022] The outlet end of the wire feeding hole 9 is located in the right-angle guide groove 10. Under the action of the wire feeder and the extruder, the composite sheet with steel wire can be directly extruded in the extrusion groove 11. In order to realize the connection of the extrusion die on the extrusion production device, the front end of the front die 1 and the bottom die 3 can also be provided with mounting holes for bolt connection. In order to ensure the normal extrusion of the sheet with steel wire, matching end dies are provided at both ends of the length direction of the extrusion die.

[0023] When the thickness of the extruded sheet is adjusted as needed, that is, the height position of the bottom die 3 relative to the rear die 2 is adjusted, in order to prevent the side edge of the bottom die 3 from blocking the material extruded in the right-angle guide groove 10 in a direction perpendicular to the moving direction, an inclined surface 12 is provided at one end of the upper side surface of the bottom die 3 close to the right-angle guide groove 10. When the height position of the bottom die 3 is adjusted vertically, the lowermost end of the inclined surface 12 will not exceed the bottom position of the right-angle guide groove 10. Fig.10 As shown, this is the limit position of the upward movement of the bottom mold 3, and a sheet with the smallest thickness is obtained.

[0024] The arrangement of the inclined surface 12 allows the material extruded from the right-angle guide groove 10 to be guided obliquely upward, rather than blocked and interfered with perpendicularly to the moving direction, and the resistance is significantly reduced, allowing the material to smoothly enter the extrusion groove 11. Moreover, when the thickness of the extruded sheet needs to be increased and the bottom mold 3 moves downward, the sinking caused by the inclined surface 12 will not affect the normal horizontal extrusion of the material.

[0025] Furthermore, in order to realize the insertion and connection of the first bolt 4 on the front mold 1 and the second bolt 5 on the rear mold 2, a first through hole 13 matching with the first bolt 4 is opened on the front mold 1, and a countersunk hole 14 matching with the second bolt 5 is opened on the rear mold 2. The second bolt 5 can completely enter the countersunk hole 14, ensuring that the rear side surface of the rear mold 2 is an integrated smooth plane without additional protruding structures, thereby avoiding interference with the rear wire feeder.

[0026] Further, in order to facilitate the disassembly and assembly of the front mold 1, as Fig.11As shown, the front mold 1 is provided with a U-shaped through groove 15 matched with the first bolt 4, and the screw head of the first bolt 4 can press the front mold 1 onto the extruder. The opening of the above-mentioned U-shaped through groove 15 can realize the connection and installation of the front mold 1 and the extruder on the one hand, and on the other hand, when the front mold 1 needs to be disassembled, it is only necessary to loosen the first bolt 4 so that its screw head no longer has an extrusion force on the front mold 1, and the disassembly of the front mold 1 on the extruder can be completed. If it is the first through hole 13, all the first bolts 4 need to be removed before the front mold 1 can be disassembled, which reduces the labor intensity of disassembly to a certain extent.

[0027] Furthermore, in order to adjust the height position of the steel wire in the extruded sheet and change the size, diameter and type of the filled steel wire, such as Fig.12 and Fig.13 As shown, a detachable wire hole block 16 is installed on the rear mold 2, wherein a slot 17 cooperating with the wire hole block 16 is opened on the rear mold 2, and a plurality of horizontally arranged wire feeding holes 9 are opened in the wire hole block 16.

[0028] A positioning threaded hole 18 is provided at the bottom of the thread hole block 16, and a second through hole 19 is provided on the lower side of the rear mold 2 corresponding to the position of the positioning threaded hole 18. A fourth bolt 20 is installed in the second through hole 19 and the positioning threaded hole 18. By rotating the fourth bolt 20 into the positioning threaded hole 18, the thread hole block 16 can be locked in the slot 17 of the rear mold 2.

[0029] The wire hole block 16 is used as a replacement part. Different wire hole blocks 16 can be provided with wire feeding holes 9 of different diameters and sizes, and can be adaptively replaced according to different types of steel wires filled. To facilitate subsequent removal and replacement, a pull ring 21 is also provided on the end surface of the wire hole block 16. The pull ring 21 is located outside the rear mold 2. After removing the fourth bolt 20, the wire hole block 16 can be taken out of the slot 17 by pulling the pull ring 21.

[0030] The technical solution of the present invention is not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all known technologies.

Claims

1. A polyethylene steel wire composite sheet extrusion die, characterized in that: The invention comprises a front die (1), a rear die (2) and a bottom die (3) installed on an extruder, wherein the front die (1) is installed on the extruder via a first bolt (4), and the rear die (2) is installed on the extruder via a second bolt (5). A plurality of connecting threaded holes (6) are provided at the lower end of the rear die (2), and a long hole (7) corresponding to the connecting threaded holes (6) is provided on the bottom die (3). A third bolt (8) is installed in the corresponding connecting threaded holes (6) and the long hole (7). The third bolt (8) is loosened to release the third bolt (8). ) can adjust the height position of the bottom die (3) relative to the rear die (2), the rear die (2) is also provided with a plurality of horizontally arranged wire feeding holes (9), a right-angle guide groove (10) is formed between the front die (1) and the rear die (2), a horizontally arranged extrusion groove (11) is formed between the front die (1) and the bottom die (3), the extrusion groove (11) and the right-angle guide groove (10) are connected, the outlet end of the wire feeding hole (9) is located in the right-angle guide groove (10), and the composite sheet with steel wire can be directly extruded in the extrusion groove (11).

2. The polyethylene-steel wire composite sheet extrusion die according to claim 1, characterized in that: An inclined surface (12) is provided at one end of the upper side surface of the bottom mold (3) close to the right-angle guide groove (10); when the height position of the bottom mold (3) is adjusted vertically, the lowermost end of the inclined surface (12) will not exceed the bottom position of the right-angle guide groove (10).

3. The polyethylene-steel wire composite sheet extrusion die according to claim 1, characterized in that: The front mold (1) is provided with a first through hole (13) that matches the first bolt (4), and the rear mold (2) is provided with a countersunk hole (14) that matches the second bolt (5).

4. The polyethylene-steel wire composite sheet extrusion die according to claim 1, characterized in that: The front die (1) is provided with a U-shaped through groove (15) which matches with the first bolt (4), and the screw head of the first bolt (4) can press the front die (1) onto the extruder.

5. The polyethylene-steel wire composite sheet extrusion die according to claim 1, characterized in that: The rear die (2) is provided with a detachable thread hole block (16), wherein the rear die (2) is provided with a slot (17) matched with the thread hole block (16), a plurality of horizontally arranged wire feeding holes (9) are provided in the thread hole block (16), a positioning thread hole (18) is provided at the bottom of the thread hole block (16), a second through hole (19) is provided on the lower side of the rear die (2) corresponding to the position of the positioning thread hole (18), a fourth bolt (20) is matched and installed in the second through hole (19) and the positioning thread hole (18), a pull ring (21) is also provided on the end surface of the thread hole block (16), the pull ring (21) is located outside the rear die (2), after the fourth bolt (20) is removed, the thread hole block (16) can be taken out of the slot (17) by pulling the pull ring (21).

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