Jig with material cleaning function for die assembly

Abstract

The invention discloses a jig with a material cleaning function for die assembly, and relates to the technical field of die assembly.The jig comprises a rotary table assembly, the rotary table assembly comprises a rotary table, a mounting groove used for mounting the rotary table is formed in the outer side of the rotary table, and a center shaft used for assisting mounting of the rotary table is mounted in the mounting groove; and the rotary table can rotate by taking the central shaft as the center. By arranging the clamp assembly, the driving assembly and the positive pressure assembly, the effects of automatically clamping a part and automatically releasing limiting are achieved, the process is achieved through driving of inevitable rotation of the rotary table, existing resources are utilized to the maximum degree, the cost is reduced, meanwhile, the original functions of the rotary table are reserved, and in addition, the machining efficiency is improved. And the limiting effect on the component can be further improved by cooperating with operation of the positive pressure assembly.

Description

Technical Field

[0001] The invention relates to the technical field of mold assembly, in particular to a tool with a material clearing function for mold assembly. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods; in short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material.

[0003] A tool that makes the blank into a product with a specific shape and size under the action of external force. It is widely used in punching, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and compression or injection molding of engineering plastics, rubber, ceramics and other products. The mold has a specific contour or inner cavity shape. The application of a contour shape with a cutting edge can make the blank separate (punch out) according to the shape of the contour line; the application of the inner cavity shape can make the blank obtain a corresponding three-dimensional shape; the mold generally consists of a movable mold and a fixed mold (or a punch and a die), which can be separated or combined; when separated, the product is taken out, and when closed, the blank is injected into the mold cavity for forming; the mold is a precision tool with a complex shape, which bears the expansion force of the blank, and has high requirements on structural strength, rigidity, surface hardness, surface roughness and processing accuracy. The development level of mold production is one of the important indicators of the level of mechanical manufacturing.

[0004] After the mold is designed, its various components are generally produced using existing processing technology, and then assembled using an assembly jig to obtain the required mold. In the prior art, the mold is generally assembled by manually integrating the various components under the action of mechanical auxiliary equipment. In the above assembly process, some waste and residual materials will be generated due to assembly. This part of the waste and residual materials will accumulate on the assembly jig, which makes it more troublesome to clean the jig later. For this reason, we propose a jig with a cleaning function for mold assembly. Summary of the invention

[0005] Based on this, the object of the present invention is to provide a jig with a material clearing function for mold assembly to solve the technical problems mentioned in the above background.

[0006] To achieve the above object, the present invention provides the following technical solution: A jig for mold assembly with a function of clearing materials, including a turntable assembly. The turntable assembly includes a turntable, and an installation groove for installing the turntable is provided on the outer side of the turntable. A central shaft for assisting the installation of the turntable is installed inside the installation groove, so that the turntable can rotate around the central shaft. A jig assembly is installed on the end face of the turntable, and the clamping and limiting of components are achieved through the operation of the jig assembly. A driving assembly is installed at the bottom end of the turntable, and the driving of the jig assembly is achieved through the operation of the driving assembly. Positive pressure assemblies are also installed on both sides of the jig assembly on the end face of the turntable to achieve positive pressure on the components.

[0007] By adopting the above technical solution, the automatic clamping and automatic release of the limit effect of the components are achieved. This process is driven by the inevitable rotation of the turntable itself, maximizing the utilization of existing resources, reducing costs while retaining its original functions. In addition, the cooperation of the operation of the positive pressure assembly can further improve the limit effect on the components.

[0008] The present invention is further configured such that the jig assembly includes a chute opened on the end face of the turntable, and a first lead screw and a second lead screw are installed inside the chute. The ends of the first lead screw and the second lead screw are rotatably connected through bearings, and sliders adapted to the outer walls of the first lead screw and the second lead screw are sleeved. Fixtures are fixedly connected to the tops of the two groups of sliders.

[0009] By adopting the above technical solution, the effect of clamping and limiting the components is achieved, assisting in the processing of the components.

[0010] The present invention is further configured such that the driving assembly includes a driven gear installed on the bottom wall of the turntable, and a driving bevel gear is installed inside the turntable at the top of the driven gear. A first driven bevel gear is meshed with one side of the driving bevel gear, and a second driven bevel gear is meshed with the other side of the driving bevel gear. The first driven bevel gear is connected to the first lead screw through a connecting shaft, and the second driven bevel gear is also connected to the second lead screw through a connecting shaft. First bevel gears are installed at the outer ends of the first driven bevel gear and the second driven bevel gear, and a second bevel gear is meshed with one side below the first bevel gear. A driving lead screw extending upward is fixedly connected to the top of the second bevel gear.

[0011] By adopting the above technical solution, the driving effect on the jig assembly is achieved.

[0012] The present invention is further configured such that a second tooth wall for driving the driven gear to rotate is installed on the inner wall of the installation groove on the outer side of the driven gear, and a first tooth wall for driving the driven gear to rotate in the reverse direction is provided on the outer wall of the central shaft.

[0013] By adopting the above technical solution, the driving effect on the driving component is achieved.

[0014] The present invention is further configured such that the positive pressure component includes vertical plates disposed on both sides of the driving lead screw, and a cross plate sleeved on the outer wall of the driving lead screw is slidably connected between the two vertical plates. An extension plate extending to one side is fixedly connected to the end of the cross plate, and a pressing plate for positively pressing and limiting the component is fixedly provided on the bottom wall of the extension plate.

[0015] By adopting the above technical solution, the positive pressure effect on the component is achieved, and the limiting effect on the component is further improved.

[0016] The present invention is further configured such that a cleaning component is provided on the outer wall of the fixture, and the cleaning component includes two aggregate plates respectively provided on the outer walls of the two fixtures. An aggregate groove extending inward is opened at the top of the aggregate plate, and an adsorption part for adsorbing to the outer wall of the fixture is provided inside the aggregate plate. A guiding inclined plate with an inclination is provided at the top of the fixture. A plug rod slidably connected to the inner wall of the fixture is fixedly connected to the outer wall of the fixture, and a slot for inserting the plug rod is opened inside the other fixture. A plurality of extrusion blocks are spaced apart at the top of the plug rod, and a plurality of driven blocks are spaced apart and staggeredly distributed above the extrusion blocks. A connecting plate for mounting the driven block and slidably connected to the inner wall of the fixture is fixed to the top of the driven block, and a synchronous plate slidably connected to the inner wall of the fixture through a spring reset is connected to the inner side of the connecting plate. A plurality of shock rods are fixedly provided at intervals at the top of the synchronous plate, and the shock rods are spaced apart from the bottom wall of the guiding inclined plate.

[0017] By adopting the above technical solution, the export of waste and surplus materials is realized, so as to achieve the collection effect of waste and surplus materials and the convenient cleaning effect of the jig.

[0018] In summary, the present invention mainly has the following beneficial effects:

[0019] 1. The present invention is provided with a fixture assembly, a driving assembly, and a positive pressure assembly. First, the mold parts to be assembled are placed between two sets of fixtures at the previous station in the processing area. Subsequently, the turntable is started. At this time, the parts located between the two sets of fixtures will rotate synchronously with the turntable, that is, rotate to the next processing station. During this process, the driven gear will first rotate to contact the second tooth wall, causing the driven gear to rotate. After the driven gear rotates, it will drive the driving bevel gear to rotate. After the driving bevel gear rotates, it will drive the first driven bevel gear and the second driven bevel gear on both sides to rotate, and the helix directions of the two sets of driven bevel gears are opposite. Subsequently, the first driven bevel gear drives the first lead screw to rotate, while the second driven bevel gear drives the second lead screw to rotate. The rotation of both lead screws will drive the sliders on their outer walls to move, and the movement of the sliders will drive the fixtures to move, realizing the automatic clamping and limiting of the mold parts. When the turntable rotates 90 degrees, the two sets of fixtures just complete the clamping and limiting of the parts, and the parts also just move to the processing station. When the processing is completed, as the turntable continues to rotate, the turntable will transport the next set of parts from the feeding station to the processing station, and the processed parts will move to the discharging station. During this process, the driven gear will contact the first tooth wall on the outer wall of the central shaft and rotate in the reverse direction, enabling the reverse driving of the fixture, that is, releasing the limiting state of the fixture on the parts, realizing the function of automatic limit release. Further, when the first driven bevel gear and the second driven bevel gear rotate, they will both drive the first bevel gear on the outside to rotate, thereby driving the second bevel gear to rotate through the first bevel gear, and further realizing the driving of the driving lead screw. After the driving lead screw rotates, the cross plate on its outer wall will move downward, and the movement of the cross plate will drive the extension plate and the pressing plate at the bottom wall of the extension plate to move downward synchronously, thereby realizing the positive pressure on the parts, further improving the limiting effect on the parts, that is, improving the stability of the parts during processing and ensuring the quality of the parts processing;

[0020] 2. The present invention is provided with a fixture assembly and a cleaning assembly. When the two sets of fixtures move to close to realize the limiting of the parts, the insertion rods on the outer walls of the two sets of fixtures will be inserted into the jacks opened in the other set. When the insertion rod is inserted into the fixture, the extrusion block on the outer wall of the insertion rod will squeeze the driven block to move upward when it moves to contact the driven block, and will not squeeze the driven block when it moves to not contact the driven block. At this time, the driven block will reset under the action of gravity. That is to say, the cooperation between the extrusion block and the driven block can realize the reciprocating movement of the connecting plate in the vertical direction, and the movement of the connecting plate will drive the synchronous plate to move synchronously, which will enable the shock rod on the end face of the synchronous plate to realize the reciprocating shock effect on the material guiding inclined plate. Thus, during the process of the fixture clamping and limiting, the material guiding inclined plate is cleaned, and at the same time, when the fixture releases the limit, it can also drive the shock rod to clean the material guiding inclined plate, realizing the cleaning effect on the material guiding inclined plate, which is beneficial to its high-quality guiding of waste materials and leftovers, that is, improving the effect of collecting waste materials and leftovers. Brief Description of the Drawings

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a top view of the overall structure of the present invention;

[0023] Figure 3 is the present invention Figure 2 local enlarged view at A in;

[0024] Figure 4 is a schematic diagram of the positive pressure structure of the present invention.

[0025] Figure 5 is a schematic diagram of the driving structure of the present invention;

[0026] Figure 6 is a schematic diagram of the internal structure of the fixture of the present invention;

[0027] Figure 7 is a schematic diagram of the vibration structure of the present invention;

[0028] Figure 8 is a schematic diagram of the aggregate plate structure of the present invention.

[0029] In the figure: 1, turntable assembly; 101, turntable; 102, installation groove; 103, central shaft; 104, first tooth wall; 105, second tooth wall; 2, fixture assembly; 201, fixture; 202, chute; 203, first lead screw; 204, second lead screw; 205, slider; 3, drive assembly; 301, driven gear; 302, drive bevel gear; 303, first driven bevel gear; 304, second driven bevel gear; 305, first bevel gear; 306, second bevel gear; 307, drive lead screw; 4, positive pressure assembly; 401, vertical plate; 402, horizontal plate; 403, extension plate; 404, pressing plate; 5, cleaning assembly; 501, aggregate plate; 502, aggregate groove; 503, adsorption part; 504, guide chute; 505, insertion rod; 506, extrusion block; 507, driven block; 508, connecting plate; 509, synchronous plate; 510, shock rod. Detailed Embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0031] Next, according to the overall structure of the present invention, its embodiments will be described.

[0032] A fixture with a material cleaning function for mold assembly, such asFigure 1-8 As shown in the figure, it includes a turntable assembly 1. The turntable assembly 1 includes a turntable 101, and an installation groove 102 for installing the turntable 101 is provided on the outer side of the turntable 101. A central shaft 103 for assisting in the installation of the turntable 101 is installed inside the installation groove 102, so that the turntable 101 can rotate around the central shaft 103;

[0033] Further, in this embodiment, a second tooth wall 105 for driving the driven gear 301 to rotate is installed on the inner wall of the installation groove 102 on the outer side of the driven gear 301, and a first tooth wall 104 for driving the driven gear 301 to rotate in the reverse direction is provided on the outer wall of the central shaft 103.

[0034] Please refer to Figure 1-3 , a fixture assembly 2 is installed on the end face of the turntable 101, and the clamping and limiting of the component are realized through the operation of the fixture assembly 2;

[0035] Specifically, the fixture assembly 2 includes a chute 202 opened on the end face of the turntable 101, and a first lead screw 203 and a second lead screw 204 are installed inside the chute 202. The ends of the first lead screw 203 and the second lead screw 204 are rotatably connected through bearings, and the outer walls of the first lead screw 203 and the second lead screw 204 are sleeved with matching sliders 205. Fixtures 201 are fixedly connected to the tops of the two groups of sliders 205.

[0036] Please refer to Figure 2 and Figure 5 , a driving assembly 3 is installed at the bottom end of the turntable 101, and the driving of the fixture assembly 2 is realized through the operation of the driving assembly 3;

[0037] Specifically, the driving assembly 3 includes a driven gear 301 installed on the bottom wall of the turntable 101, and a driving bevel gear 302 is installed inside the turntable 101 at the top of the driven gear 301. A first driven bevel gear 303 is meshed and connected to one side of the driving bevel gear 302, and a second driven bevel gear 304 is meshed and connected to the other side of the driving bevel gear 302. The first driven bevel gear 303 and the first lead screw 203 are connected through a connecting shaft, and the second driven bevel gear 304 and the second lead screw 204 are also connected through a connecting shaft. First bevel gears 305 are installed at the outer ends of the first driven bevel gear 303 and the second driven bevel gear 304, and a second bevel gear 306 is meshed and connected to the lower side of one side of the first bevel gear 305. A driving lead screw 307 extending upward is fixedly connected to the top of the second bevel gear 306.

[0038] Please refer to Figure 3-4 , positive pressure assemblies 4 are also installed on both sides of the fixture assembly 2 on the end face of the turntable 101 to realize the positive pressure on the component;

[0039] Specifically, the positive pressure assembly 4 includes vertical plates 401 arranged on both sides of the driving lead screw 307. A cross plate 402 sleeved on the outer wall of the driving lead screw 307 is slidably connected between the two groups of vertical plates 401. An extension plate 403 extending to one side is fixedly connected to the end of the cross plate 402, and a pressing plate 404 for positively pressing and limiting the components is fixedly arranged on the bottom wall of the extension plate 403.

[0040] Please refer to Figure 6-8 , a cleaning assembly 5 is arranged on the outer wall of the fixture 201 to realize the export of waste and surplus materials;

[0041] Specifically, the cleaning assembly 5 includes two sets of aggregate plates 501 respectively arranged on the outer walls of the two sets of fixtures 201. An aggregate groove 502 extending inward is opened at the top of the aggregate plate 501. An adsorption part 503 for sucking and combining with the outer wall of the fixture 201 is arranged inside the aggregate plate 501. A guiding inclined plate 504 with an inclination is arranged at the top of the fixture 201. A plug rod 505 fixedly connected to the outer wall of the fixture 201 and slidably connected to the inner wall of the fixture 201 is provided. A slot for the plug rod 505 to insert is opened inside the other set of fixture 201. Multiple sets of extrusion blocks 506 are arranged at intervals at the top of the plug rod 505. Multiple sets of driven blocks 507 are arranged at intervals and staggeredly above the extrusion blocks 506. A connecting plate 508 for installing the driven block 507 and slidably connected to the inner wall of the fixture 201 is fixed at the top of the driven block 507. A synchronous plate 509 connected to the inner wall of the fixture 201 and slidably connected through a spring reset is connected to the inner side of the connecting plate 508. Multiple sets of shock rods 510 are fixedly arranged at intervals at the top of the synchronous plate 509, and the shock rods 510 are arranged at an interval from the bottom wall of the guiding inclined plate 504.

[0042] The working principle of the present invention is as follows: First, place the mold components to be processed between two sets of fixtures at the previous station in the processing area. Then start the turntable 101. At this time, the components located between the two sets of fixtures 201 will rotate synchronously with the turntable 101, that is, rotate to the next processing station;

[0043] In the above process, the driven gear 301 will first rotate to contact the second tooth wall 105, so that the driven gear 301 rotates. After the driven gear 301 rotates, it will drive the driving bevel gear 302 to rotate. After the driving bevel gear 302 rotates, it will drive the first driven bevel gear 303 and the second driven bevel gear 304 on both sides to rotate. The rotation directions of the two sets of driven bevel gears are opposite. Then the first driven bevel gear 303 drives the first lead screw 203 to rotate, and the second driven bevel gear 304 drives the second lead screw 204 to rotate. The rotation of the two lead screws will drive the sliders 205 on their outer walls to move. The movement of the sliders 205 will drive the fixture 201 to move, realizing the automatic clamping and limiting of the components;

[0044] When the turntable 101 rotates by 90 degrees, the two sets of jigs 201 exactly complete the clamping and limiting of the component, and the component also exactly moves to the processing station. After the processing is completed, as the turntable 101 continues to rotate, the turntable 101 will transport the next set of components from the loading station to the processing station, and the processed components will move to the unloading station;

[0045] In the above process, the driven gear 301 will contact the first tooth wall 104 on the outer wall of the central shaft 103 and rotate in the reverse direction, so as to realize the reverse drive of the jig 201, that is, to release the limiting state of the jig 201 on the component and realize the function of automatically releasing the limit;

[0046] Furthermore, while the first driven bevel gear 303 and the second driven bevel gear 304 are rotating, they will both drive the outer first bevel gear 305 to rotate, so as to drive the second bevel gear 306 to rotate through the first bevel gear 305, and then realize the drive of the drive screw 307. After the drive screw 307 rotates, the cross plate 402 on its outer wall will move downward. The movement of the cross plate 402 will drive the extension plate 403 and the pressing plate 404 on the bottom wall of the extension plate 403 to move downward synchronously, so as to realize the positive pressure on the component, further improve the limiting effect on the component, that is, improve the stability during the processing of the component, and ensure the quality of the component processing;

[0047] During the process of the two sets of jigs 201 moving to the closed state to realize the limiting of the component, the insertion rods 505 on the outer walls of the two sets of jigs 201 will be inserted into the jacks opened in the other set. After the insertion rod 505 is inserted into the jig 201, the extrusion block 506 on the outer wall of the insertion rod 505 will squeeze the driven block 507 to move upward when it moves to contact the driven block 507, and will not squeeze the driven block 507 when it moves to not contact the driven block 507. At this time, the driven block 507 will reset under the action of gravity. That is to say, with the cooperation of the extrusion block 506 and the driven block 507, the reciprocating movement of the connecting plate 508 in the vertical direction can be realized, and the movement of the connecting plate 508 will drive the synchronous plate 509 to move synchronously, which will enable the shock rod 510 on the end face of the synchronous plate 509 to realize the reciprocating shock effect on the material guiding inclined plate 504, so as to clean the material guiding inclined plate 504 during the clamping and limiting process of the jig 201. At the same time, when the jig 201 releases the limit, it can also drive the shock rod 510 to clean the material guiding inclined plate, realizing the cleaning effect on the material guiding inclined plate 504, which is beneficial to its high-quality guiding of the waste and surplus materials, that is, it improves the effect of collecting the waste and surplus materials;

[0048] In addition, during the processing, the waste and surplus materials that fall on the end face of the fixture 201 will be discharged under the action of the material guiding inclined plate 504, and then, due to the self-weight of the waste and surplus materials, they can fall into the material collecting groove 502 of the material collecting plate 501 to be collected. After the material collecting plate 501 is full, the material collecting plate 501 can be pulled outwards to clean the material collecting plate 501. After the cleaning is completed, the adsorption part 503 inside the material collecting plate 501 can be adsorbed on the outer wall of the fixture 201;

[0049] It should be noted that the other two working stations of the turntable 101 can be set with a fixture cleaning station, a fixture drying station, etc. according to requirements.

[0050] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and are not limitations of the invention. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can, without departing from the principles and purposes of the present invention, make modifications, substitutions, and variations that do not make creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A fixture with a function of clearing materials for mold assembly, including a turntable assembly (1), characterized in that: The turntable assembly (1) includes a turntable (101), and an installation groove (102) for installing the turntable (101) is formed on the outer side of the turntable (101). A central shaft (103) for assisting in the installation of the turntable (101) is installed inside the installation groove (102), so that the turntable (101) can rotate around the central shaft (103). A clamp assembly (2) is installed on the end face of the turntable (101). The clamping and limiting of the component are realized through the operation of the clamp assembly (2). A driving assembly (3) is installed at the bottom end of the turntable (101). The driving of the clamp assembly (2) is realized through the operation of the driving assembly (3). Positive pressure assemblies (4) are installed on both sides of the clamp assembly (2) on the end face of the turntable (101) to realize the positive pressure on the component.

2. The machine tool turntable for processing harmonic speed reducers according to claim 1, wherein: The clamp assembly (2) includes a chute (202) formed on the end face of the turntable (101). A first lead screw (203) and a second lead screw (204) are installed inside the chute (202). The ends of the first lead screw (203) and the second lead screw (204) are rotationally connected through bearings. Sliders (205) adapted to the outer walls of the first lead screw (203) and the second lead screw (204) are sleeved. Clamps (201) are fixedly connected to the tops of the two groups of sliders (205).

3. The machine tool turntable for processing a harmonic reducer according to claim 2, wherein: The driving assembly (3) includes a driven gear (301) installed on the bottom wall of the turntable (101). A driving bevel gear (302) is installed inside the turntable (101) at the top of the driven gear (301). A first driven bevel gear (303) is meshed and connected to one side of the driving bevel gear (302), and a second driven bevel gear (304) is meshed and connected to the other side of the driving bevel gear (302). The first driven bevel gear (303) is connected to the first lead screw (203) through a connecting shaft, and the second driven bevel gear (304) is also connected to the second lead screw (204) through a connecting shaft.

4. The machine tool turntable for processing harmonic speed reducers according to claim 3, wherein: First bevel gears (305) are installed at the outer ends of the first driven bevel gear (303) and the second driven bevel gear (304). A second bevel gear (306) is meshed and connected to the lower side of one side of the first bevel gear (305). A driving lead screw (307) extending upward is fixedly connected to the top of the second bevel gear (306).

5. The machine tool turntable for the processing of harmonic speed reducers according to claim 3, characterized in that: A second tooth wall (105) for driving the driven gear (301) to rotate is installed on the inner wall of the installation groove (102) on the outer side of the driven gear (301), and a first tooth wall (104) for driving the driven gear (301) to rotate in the reverse direction is arranged on the outer wall of the central shaft (103).

6. The turntable of the machine tool for processing harmonic speed reducers according to claim 4, wherein: The positive pressure assembly (4) includes vertical plates (401) arranged on both sides of the driving lead screw (307). A cross plate (402) sleeved on the outer wall of the driving lead screw (307) is slidably connected between the two groups of vertical plates (401). An extension plate (403) extending to one side is fixedly connected to the end of the cross plate (402), and a pressing plate (404) for positively pressing and limiting components is fixedly arranged on the bottom wall of the extension plate (403).

7. The machine tool turntable for processing harmonic speed reducers according to claim 2, wherein: A cleaning assembly (5) is arranged on the outer wall of the fixture (201). The cleaning assembly (5) includes two sets of aggregate plates (501) respectively arranged on the outer walls of the two sets of fixtures (201). An aggregate groove (502) extending inward is formed at the top of the aggregate plate (501). An adsorption part (503) for sucking and engaging with the outer wall of the fixture (201) is arranged inside the aggregate plate (501). An inclined guide plate (504) with a slope is arranged at the top of the fixture (201) to realize the export of waste materials and surplus materials.

8. The machine tool turntable for processing the harmonic reducer according to claim 7, characterized in that: A plug rod (505) fixedly connected to the outer wall of the fixture (201) and slidably connected to the inner wall of the fixture (201) is arranged. A slot for the plug rod (505) to insert is formed inside the other set of fixtures (201). A plurality of extrusion blocks (506) are arranged at intervals at the top of the plug rod (505). A plurality of driven blocks (507) are arranged at intervals and staggeredly above the extrusion blocks (506). A connecting plate (508) for installing the driven block (507) and slidably connected to the inner wall of the fixture (201) is fixed at the top of the driven block (507). A synchronous plate (509) slidably connected to the inner wall of the fixture (201) through a spring reset is connected to the inner side of the connecting plate (508). A plurality of shock rods (510) are fixedly arranged at intervals at the top of the synchronous plate (509), and the shock rods (510) are arranged at an interval from the bottom wall of the guide inclined plate (504).

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