Extrusion die

Abstract

The utility model provides an extrusion die, belongs to the technical field of extrusion dies, and aims to solve the problems that the conventional extrusion die is easy to damage due to collision and is relatively complicated and relatively long in time consumption in disassembly. Comprising a die body; the fixed base is fixedly mounted at the bottom of the mouth mold main body; the cup core is connected to the interior of the mouth mold main body in a sliding manner; the bolt hole is formed in the fixed base; the multiple sets of protection pieces are arranged, and the multiple sets of protection pieces are connected to the upper portions of the bolt holes in a sliding mode; the short-rod bolt is rotationally connected to the interior of the bolt hole; the protective mounting assembly is arranged on the outer side of the mouth mold main body; and the limiting assembly is arranged in the fixed base. The die has the advantages of wear resistance, corrosion resistance, safety, firmness, stable structure and the like, the die is convenient to disassemble and assemble, the disassembly and assembly efficiency of the die is greatly improved, and the structure is stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of extrusion dies, and more specifically, particularly relates to an extrusion die. Background Art

[0002] The TPE dust cover parts for the drive shaft and steering gear on the car are made by an extrusion blow molding machine in conjunction with an extrusion blow molding mold. When extruding the embryo, the material first passes through the extrusion mold after being extruded from the machine cylinder. The existing extrusion mold is mainly composed of a mouth die and a cup core. The cup core of the extrusion mold cooperates with the action of the machine to control the thickness and shape of the product embryo.

[0003] Existing application number CN201220397505.2 The utility model proposes an extrusion die, including a feed die, a packaging cover, and a center rod. The feed die is provided with a circular groove, the packaging cover is sleeved on the feed die, the center rod is fixedly arranged at the inner center of the feed die, the packaging cover and the circular groove form a circular cavity, the upper end of the packaging cover is provided with a feed port, the feed port is connected with the circular cavity; the feed surface of the feed die is provided with discharge holes, the discharge holes are connected with the circular cavity, the number of the discharge holes is at least two and is evenly distributed on the discharge surface, and the diameter of the discharge holes gradually increases according to the distance from the feed port; the annular ring of the feed surface has a raised buffer belt, and the buffer belt is integrally formed with the feed die. The utility model provides an extrusion die with high product qualification rate and high production efficiency.

[0004] Based on the above, the existing extrusion mold is mainly made of brass, which is easy to be damaged. If the damaged position is the molding area, it will cause defects in product size and appearance. The mold needs to be disassembled and cleaned when the mold is changed. When the mold is installed, in order to ensure the tightness and sealing after installation, long-rod bolts are mainly used for fixing. The long-rod bolts are too long and it takes a long time to disassemble. The disassembly is cumbersome and time-consuming. If the material overflows, it is easy to block the bolt hole, and it is not suitable to clean and disassemble the bolt. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an extrusion die to solve the problem that the existing extrusion die is mainly made of brass, which is easy to be damaged. If the damaged position is the molding area, it will cause defects in product size and appearance. The mold needs to be disassembled and cleaned when the mold is changed. When the mold is installed, in order to ensure the tightness and sealing after installation, long-rod bolts are mainly used to fix it. The long-rod bolts are too long and it takes a long time to disassemble. The disassembly is cumbersome and time-consuming. If the material overflows, it is easy to clog the bolt hole, and it is not suitable to clean and disassemble the bolt.

[0006] The purpose and effect of the extrusion die of the utility model are achieved by the following specific technical means:

[0007] An extrusion die comprises a die body;

[0008] A fixed base, the fixed base is fixedly mounted on the bottom of the die body;

[0009] A cup core, wherein the cup core is slidably connected to the inside of the die body;

[0010] A bolt hole is provided inside the fixed base;

[0011] Protective sheets, wherein the protective sheets are provided in multiple groups, and the multiple groups of protective sheets are slidably connected to the upper part of the bolt hole;

[0012] A short-stem bolt, wherein the short-stem bolt is rotatably connected inside the bolt hole;

[0013] A protective mounting assembly, wherein the protective mounting assembly is arranged outside the die body;

[0014] A limiting component is arranged inside the fixed base.

[0015] Furthermore, the protective installation assembly includes:

[0016] A metal coating, wherein the metal coating is arranged on the outside of the die body;

[0017] The clamping boss is fixedly mounted on the bottom of the fixed base.

[0018] Furthermore, the protective installation assembly also includes:

[0019] A discharge port, the discharge port being disposed on the top of the die body;

[0020] A hexagonal adjustment hole, wherein the hexagonal adjustment hole is provided on the top of the cup core;

[0021] The fixing thread is arranged inside the cup core.

[0022] Furthermore, the protective installation assembly also includes:

[0023] The inclined guide platform is arranged at the bottom of the cup core.

[0024] Furthermore, the limit assembly includes:

[0025] A sliding groove, wherein the sliding groove is provided inside the fixed base;

[0026] A paddle, the paddle being fixedly mounted on the upper part of the protective sheet;

[0027] A transmission plate is fixedly mounted on the bottom of the protective sheet and is slidably connected inside the sliding groove.

[0028] Furthermore, the limit assembly also includes:

[0029] A first spring, wherein the first spring is fixedly mounted inside the sliding groove, and the first spring is fixedly mounted on one side of the transmission plate;

[0030] The inclined transmission rod is fixedly installed on one side of the transmission plate, and the top end of the inclined transmission rod is an inclined structure.

[0031] Furthermore, the limit assembly also includes:

[0032] A limiting hole, wherein the limiting hole is provided inside the short rod bolt;

[0033] A limit pin, wherein the limit pin is slidably connected inside the bolt hole;

[0034] A second spring, the second spring being fixedly mounted on the outside of the limit latch;

[0035] The inclined plane transmission block is fixedly installed at the bottom of the limit latch, and the end of the inclined plane transmission block is an inclined plane structure.

[0036] Compared with the prior art, the utility model has the following beneficial effects:

[0037] First of all, the utility model has a protective installation component, and a certain roughness is reserved on the die body after processing to facilitate subsequent metal plating. The surface of the die body has a metal coating to increase the corrosion resistance and wear resistance of the die body surface. The snap-in boss facilitates the installation and clamping of the mold and increases the sealing. The corrosion resistance and wear resistance of the mold are greatly improved by metal plating and spray coating, and the impact of bumps on the mold is reduced.

[0038] Secondly, the utility model has a limiting assembly, which fixes the mold by a short rod bolt, reduces the length of the bolt to increase the disassembly and assembly efficiency, and limits the short rod bolt by a limiting pin to prevent the bolt from being too short to make the mold loose and prevent the short rod bolt from loosening, thereby greatly improving the tightness of the short rod bolt for installing the mold, and protecting the short rod bolt to prevent material overflow and easy clogging of the short rod bolt.

[0039] The utility model has the advantages of wear resistance, corrosion resistance, safety, firmness, and stable structure. It is convenient for disassembly and assembly of the mold, greatly improving the efficiency of disassembly and assembly of the mold. The stable structure effectively prevents the bolts from shortening and making the mold installation unstable, greatly improving the tightness of the mold after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1It is a schematic diagram of the main structure of the utility model.

[0041] Figure 2 It is a structural schematic diagram of a fixed base of the utility model.

[0042] Figure 3 It is a schematic diagram of the metal plating structure of the utility model.

[0043] Figure 4 It is a schematic diagram of the cup core structure of the utility model.

[0044] Figure 5 It is a schematic diagram of the structure of the inclined guide platform of the utility model.

[0045] Figure 6 It is a schematic diagram of the short rod bolt structure of the utility model.

[0046] Figure 7 It is a schematic diagram of the sliding groove structure of the utility model.

[0047] Figure 8 It is a schematic diagram of the limiting hole structure of the utility model.

[0048] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0049] 1. Mouth die body; 101. Metal coating; 102. Discharge port; 2. Fixed base; 201. Snap-fit ​​boss; 202. Bolt hole; 203. Sliding groove; 3. Cup core; 301. Hexagonal adjustment hole; 302. Inclined flow guide platform; 303. Fixed thread; 4. Protective sheet; 401. Pick; 402. Transmission plate; 403. First spring; 404. Inclined transmission rod; 5. Short rod bolt; 501. Limit hole; 502. Limit pin; 503. Second spring; 504. Inclined transmission block. DETAILED DESCRIPTION

[0050] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0051] Embodiment 1:

[0052] As attached Figure 1 To Attachment Figure 8 As shown:

[0053] The utility model provides an extrusion die, comprising a die body 1;

[0054] A fixed base 2 is fixedly mounted on the bottom of the die body 1;

[0055] A cup core 3, which is slidably connected to the inside of the die body 1;

[0056] Bolt hole 202, the bolt hole 202 is opened inside the fixed base 2;

[0057] The protective sheet 4 is provided with multiple groups, and the multiple groups of protective sheets 4 are slidably connected to the upper part of the bolt hole 202;

[0058] A short-stem bolt 5, which is rotatably connected inside the bolt hole 202;

[0059] The protective installation component is arranged on the outside of the die body 1.

[0060] Among them, the protective installation components include:

[0061] A metal coating 101, wherein the metal coating 101 is arranged on the outside of the die body 1;

[0062] The clamping boss 201 is fixedly mounted on the bottom of the fixed base 2; its function is that the inner wall of the die body 1 and the outer side of the cup core 3 are sprayed with a coating, the main purpose of the coating is to protect the inner wall of the die body 1 and the outer side of the cup core 3 from oxidation, corrosion and wear, thereby increasing the service life of the mold and reducing production costs. The die body 1 reserves a certain roughness after processing to facilitate subsequent metal plating 101. The clamping boss 201 facilitates the installation and clamping of the mold, and has a certain sealing effect after the mold is installed and clamped.

[0063] Among them, the protective installation components also include:

[0064] A discharge port 102 is provided at the top of the die body 1;

[0065] Hexagonal adjustment hole 301, the hexagonal adjustment hole 301 is opened on the top of the cup core 3;

[0066] The fixed thread 303 is arranged inside the cup core 3; the function of the fixed thread 303 is to facilitate the threaded connection with the core rod, and the cup core 3 can be moved through the fixed thread 303 by adjusting the rotating hexagonal adjustment hole 301, thereby adjusting the distance between the cup core 3 and the discharge port 102, thereby adjusting the discharge amount of the discharge port 102.

[0067] Among them, the protective installation components also include:

[0068] The inclined guide platform 302 is arranged at the bottom of the cup core 3; the inclined structure of the inclined guide platform 302 facilitates the material to flow outside the cup core 3, reduces the resistance when the material flows, and makes the material extrusion smoother.

[0069] The specific usage and function of this embodiment are as follows:

[0070] The inner wall of the die body 1 and the outer side of the cup core 3 are sprayed with a coating, the main purpose of the coating is to protect the inner wall of the die body 1 and the outer side of the cup core 3 from oxidation, corrosion and wear, thereby increasing the service life of the mold and reducing production costs. The die body 1 reserves a certain roughness after processing to facilitate subsequent metal plating 101, and the snap-fit ​​boss 201 facilitates the installation and clamping of the mold, and has a certain sealing effect after the mold is installed and clamped.

[0071] The fixed thread 303 is conveniently connected with the core rod through a thread, and the cup core 3 is moved through the fixed thread 303 by adjusting the rotating hexagonal adjustment hole 301, thereby adjusting the distance between the cup core 3 and the discharge port 102, and playing a role in adjusting the discharge amount of the discharge port 102. The inclined structure of the inclined guide platform 302 facilitates the flow of materials outside the cup core 3, reduces the resistance of the material flow, and makes the material extrusion smoother.

[0072] Embodiment 2:

[0073] Based on the first embodiment, Figures 1 to 8 As shown, it also includes:

[0074] The limiting component is arranged inside the fixed base 2.

[0075] Among them, the limit components include:

[0076] A sliding groove 203, the sliding groove 203 is provided inside the fixed base 2;

[0077] A paddle 401, which is fixedly mounted on the upper part of the protective sheet 4;

[0078] The transmission plate 402 is fixedly installed at the bottom of the protective sheet 4, and the transmission plate 402 is slidably connected inside the sliding groove 203; the function is to move the paddle 401, the paddle 401 drives the protective sheet 4 to slide, and the protective sheet 4 drives the transmission plate 402 to slide inside the sliding groove 203.

[0079] Among them, the limit components also include:

[0080] A first spring 403, the first spring 403 is fixedly mounted inside the sliding groove 203, and the first spring 403 is fixedly mounted on one side of the transmission plate 402;

[0081] The inclined transmission rod 404 is fixedly mounted on one side of the transmission plate 402, and the top of the inclined transmission rod 404 is an inclined structure; the function is that the movement of the transmission plate 402 drives the inclined transmission rod 404 to move and compress the first spring 403, and the paddle 401 is released. The first spring 403 drives the transmission plate 402, the inclined transmission rod 404 and the protective sheet 4 to move under the elastic action.

[0082] Among them, the limit components also include:

[0083] A limiting hole 501, which is provided inside the short rod bolt 5;

[0084] A limit pin 502, the limit pin 502 is slidably connected inside the bolt hole 202;

[0085] A second spring 503, the second spring 503 is fixedly mounted on the outside of the limiting latch 502;

[0086] The inclined plane transmission block 504 is fixedly mounted at the bottom of the limiting latch 502, and the end of the inclined plane transmission block 504 is an inclined plane structure; the function is that the inclined plane transmission rod 404 moves, and the inclined plane structure of the inclined plane transmission rod 404 is connected with the inclined plane structure of the inclined plane transmission block 504, so that the inclined plane transmission rod 404 drives the inclined plane transmission block 504 to move vertically upward, and the movement of the inclined plane transmission block 504 drives the limiting latch 502 to be inserted into the limiting hole 501 and compress the second spring 503.

[0087] The specific usage and function of this embodiment are as follows:

[0088] When the mold needs to be fixed, pull the paddle 401, the paddle 401 drives the protective sheet 4 to expose the bolt hole 202, insert the short rod bolt 5 into the bolt hole 202 and tighten it, loosen the paddle 401, and the first spring 403 drives the transmission plate 402 to move under the elastic action, and the transmission plate 402 drives the inclined plane transmission rod 404 to move. The inclined plane transmission rod 404 moves so that the inclined plane structure of the inclined plane transmission rod 404 and the inclined plane structure of the inclined plane transmission block 504 are connected, so that the inclined plane transmission rod 404 drives the inclined plane transmission block 504 to move vertically upward, and the inclined plane transmission block 504 moves to drive the limiting pin 502 to insert into the limiting hole 501 and compress the second spring 503. The limiting pin 502 limits the short rod bolt 5 to prevent the short rod bolt 5 from loosening and reversing during use.

[0089] When the mold needs to be removed, pull the paddle 401, the paddle 401 drives the protective sheet 4 to slide, the protective sheet 4 drives the transmission plate 402 to slide inside the sliding groove 203, the transmission plate 402 drives the inclined transmission rod 404 to move and compress the first spring 403, the second spring 503 is reset under the elastic action, the second spring 503 drives the limiting pin 502 to leave the limiting hole 501, so that the short rod bolt 5 cancels the limit and can rotate, and the mold is removed by rotating the short rod bolt 5 with a tool.

Claims

1. An extrusion die, characterized in that: The extrusion die comprises a die body (1); a fixed base (2), the fixed base (2) being fixedly mounted on the bottom of the die body (1); a cup core (3), the cup core (3) being slidably connected inside the die body (1); a bolt hole (202), the bolt hole (202) being opened inside the fixed base (2); a protective sheet (4), the protective sheet (4) being provided with a plurality of groups, the plurality of groups of protective sheets (4) being slidably connected to the upper part of the bolt hole (202); a short rod bolt (5), the short rod bolt (5) being rotatably connected inside the bolt hole (202); a protective mounting assembly, the protective mounting assembly being arranged outside the die body (1); and a limit assembly, the limit assembly being arranged inside the fixed base (2).

2. An extrusion die as claimed in claim 1, characterized in that: The protective installation component comprises: a metal coating (101) and a clamping boss (201); the metal coating (101) is arranged on the outside of the die body (1); and the clamping boss (201) is fixedly installed on the bottom of the fixed base (2).

3. An extrusion die as claimed in claim 2, characterized in that: The protective installation assembly further comprises: a discharge port (102), a hexagonal adjustment hole (301) and a fixing thread (303); the discharge port (102) is provided at the top of the die body (1); the hexagonal adjustment hole (301) is provided at the top of the cup core (3); and the fixing thread (303) is provided inside the cup core (3).

4. An extrusion die as claimed in claim 2, characterized in that: The protective installation assembly also includes: an inclined flow guide platform (302), wherein the inclined flow guide platform (302) is arranged at the bottom of the cup core (3).

5. An extrusion die as claimed in claim 1, characterized in that: The limit assembly comprises: a sliding groove (203), a paddle (401) and a transmission plate (402); the sliding groove (203) is arranged inside the fixed base (2); the paddle (401) is fixedly mounted on the upper part of the protective sheet (4); the transmission plate (402) is fixedly mounted on the bottom of the protective sheet (4), and the transmission plate (402) is slidably connected inside the sliding groove (203).

6. An extrusion die as claimed in claim 5, characterized in that: The limit assembly also includes: a first spring (403) and an inclined transmission rod (404), wherein the first spring (403) is fixedly mounted inside the sliding groove (203), and the first spring (403) is fixedly mounted on one side of the transmission plate (402); the inclined transmission rod (404) is fixedly mounted on one side of the transmission plate (402), and the top end of the inclined transmission rod (404) is an inclined structure.

7. An extrusion die as claimed in claim 5, characterized in that: The limiting assembly further comprises: a limiting hole (501), a limiting latch (502), a second spring (503) and an inclined transmission block (504); the limiting hole (501) is arranged inside the short rod bolt (5); the limiting latch (502) is slidably connected inside the bolt hole (202); the second spring (503) is fixedly mounted on the outside of the limiting latch (502); the inclined transmission block (504) is fixedly mounted on the bottom of the limiting latch (502), and the end of the inclined transmission block (504) is an inclined structure.

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