Extruder for sealing ring production

Abstract

The utility model relates to the field of sealing ring production equipment, and discloses an extruder for sealing ring production. The extrusion molding device comprises an extruder body and an extrusion molding die head installed at the discharging end of the extruder body through a plurality of bolts, a die core sleeve is inserted into the end, away from the extruder body, of the extrusion molding die head, the die core sleeve communicates with the discharging end of the extruder body and is suitable for limiting the shape of extruded materials, and the extrusion molding die head is provided with a locking plug pin set. A locking groove is formed in the outer wall of the mold core sleeve, one end of the locking bolt group is inserted into the locking groove so as to lock the mold core sleeve in the extrusion mold head, and one end of the locking bolt group is exposed out of the extrusion mold head and is suitable for being operated by a user to realize unlocking. According to the utility model, unlocking can be realized only by shifting the unlocking rod edge, so that mold core sleeves with sections in different shapes can be replaced, and the operation is simple and convenient; and the maintenance and use cost is low.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing ring production equipment, and more specifically, to an extruder for sealing ring production. Background Technology

[0002] In the production process of sealing rings, some are made by directly pressing the material extruded from an extruder into a sheet shape, and then directly stamping the sheet material to form a ring. Others require melting granular plastic in an extruder to extrude strip products, then cutting the strips into sealing rings, and finally bonding the cut strips into ring-shaped sealing rings using automated bonding equipment.

[0003] In the aforementioned production process of extruding strip-shaped sealing rings using an extruder and then splitting and bonding them, an extrusion die is detachably installed at the end of the extruder. This die can produce sealing rings with different cross-sectional shapes, such as circles, squares, polygons, and U-shapes. Currently, the extrusion die is connected to the extruder via a flange, and to ensure connection stability, at least four bolts are used to secure the flange. When changing the extrusion die to produce sealing rings with different cross-sectional shapes, workers need to first remove the bolts on the flange, and then re-secure the extrusion die with multiple bolts afterward. This makes the entire replacement process cumbersome and inconvenient. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model provides an extruder for producing sealing rings, comprising an extruder body and an extrusion die. The extrusion die is mounted to the discharge end of the extruder body by multiple bolts. A die core sleeve is inserted inside the extrusion die, with the end of the die core sleeve inserted into the extrusion die away from the extruder body. The die core sleeve is interconnected with the discharge end of the extruder body to restrict the shape of the extruded material. The extrusion die is provided with a locking pin assembly, and the outer wall of the die core sleeve is provided with a locking groove. One end of the locking pin assembly is inserted into the locking groove to lock the die core sleeve inside the extrusion die, while the other end of the locking pin assembly is exposed outside the extrusion die for user operation to unlock.

[0005] Optionally, a first flange is fixedly provided at the discharge end of the extruder body, and a second flange is fixedly provided at the end of the extrusion die head near the first flange. The first flange and the second flange are fixedly connected by a plurality of bolts.

[0006] Optionally, the extrusion die head is provided with cooling pipes, which are located outside the die core sleeve and are arranged in a wound manner around the die core sleeve.

[0007] Optionally, the extrusion die head has a slot at one end near the extruder body, the slot passes through the extrusion die head, the die core sleeve is inserted into the slot, the outer wall of the extrusion die head has a sliding groove, the sliding groove communicates with the slot, and the locking pin group is inserted into the sliding groove and moves within the sliding groove.

[0008] Optionally, the locking pin assembly includes a locking pin, one end of which is located in the locking groove and the other end is located in the sliding groove.

[0009] Optionally, the extrusion die head has an adjustment groove at one end away from the extruder body. The adjustment groove extends in the same direction as the sliding groove and is connected to the sliding groove. The locking pin group also includes an unlocking rod, which is inserted into the adjustment groove and threadedly connected to the locking pin. The end of the adjustment rod away from the locking pin protrudes from the adjustment groove.

[0010] Optionally, the outer wall of the extrusion die head is provided with a threaded groove, the sliding groove is provided at the bottom of the threaded groove, a threaded post is threadedly installed in the threaded groove, a spring is provided between the locking pin and the threaded post, and the two ends of the spring are respectively pressed against the locking pin and the threaded post.

[0011] Optionally, a drive column is fixedly provided at the end of the threaded post away from the spring, and the drive column is adapted for clamping by a wrench.

[0012] Optionally, the end of the die core sleeve near the extruder body is provided with a docking post that is inserted into the extruder body, and the outer peripheral wall of the end of the die core sleeve away from the docking post abuts against the groove wall of the slot.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0014] 1. When producing sealing rings with different cross-sectional shapes, it is not necessary to disassemble the extrusion die head. Simply move the unlocking lever on the outside of the extrusion die head to drive the locking pin to completely disengage from the locking groove, and then pull out the die core sleeve to replace the die core sleeve with a different cross-sectional shape. The whole process only requires moving the unlocking lever, which is simple and convenient to operate, and at the same time, it does not damage the stability of the extrusion die head after installation.

[0015] 2. For producing sealing rings of different shapes, only the mold core sleeve needs to be replaced, which is much cheaper to maintain and use compared to replacing the entire extrusion die head;

[0016] 3. The cooling pipeline can cool and solidify the material passing through the mold core sleeve, ensuring the quality of the sealing rings produced subsequently;

[0017] 4. The spring can drive the locking pin to always be inserted into the locking groove, making it less likely for the locking pin to come out of the locking groove due to the vibration generated by the extruder, thus improving the stability of the locking pin locking the die core sleeve. Attached Figure Description

[0018] Figure 1 This is an exploded view of the extruder body and extrusion die head in an embodiment of this utility model;

[0019] Figure 2 This is an exploded view of the extrusion die head and the die core sleeve in an embodiment of this utility model;

[0020] Figure 3 This is an exploded view of the mold core sleeve and locking pin assembly in an embodiment of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Extruder body; 11. First flange; 2. Extrusion die head; 21. Die core sleeve; 211. Locking groove; 212. Connecting post; 213. Convex ring; 22. Second flange; 23. Slot; 24. Cooling pipe; 25. Sliding groove; 26. Adjusting groove; 27. Threaded groove; 28. Threaded post; 281. Drive square post; 29. ​​Spring; 3. Locking pin assembly; 31. Locking pin; 32. Unlocking rod. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0025] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0026] This utility model embodiment provides an extruder for producing sealing rings, see reference. Figure 1 and Figure 2The extruder for producing sealing rings includes an extruder body 1 and an extrusion die 2. The extrusion die 2 is installed on the discharge end of the extruder body 1 by multiple bolts. A die core sleeve 21 is inserted inside the extrusion die 2. The end of the die core sleeve 21 away from the extruder body 1 is inserted into the extrusion die 2. The die core sleeve 21 is interconnected with the discharge end of the extruder body 1 to restrict the shape of the extruded material. The extrusion die 2 is provided with a locking pin assembly 3. The outer wall of the die core sleeve 21 is provided with a locking groove 211. One end of the locking pin assembly 3 is inserted into the locking groove 211 to lock the die core sleeve 21 inside the extrusion die 2. The other end of the locking pin assembly 3 is exposed outside the extrusion die 2 for user operation to unlock.

[0027] Reference Figure 1 and Figure 2 The extruder body 1 has a first flange 11 fixedly installed at its discharge end, and a second flange 22 fixedly installed at the end of the extrusion die 2 near the first flange 11. The first flange 11 and the second flange 22 are connected by multiple bolts. On the one hand, the connection between the first flange 11 and the second flange 22 by multiple bolts improves the stability of the connection between the extruder body 1 and the extrusion die 2; on the other hand, sealing rings can be installed on the first flange 11 and the second flange 22 to improve the sealing performance at the connection between the extruder body 1 and the extrusion die 2, making it less likely for molten plastic to leak.

[0028] A slot 23 is provided at one end of the extrusion die head 2 near the extruder body 1. The slot 23 penetrates the extrusion die head 2, and the die core sleeve 21 is inserted into the slot 23. A cooling pipe 24 is provided in the slot 23. The cooling water pipe is arranged in a coiled state like a spring 29 along the extension direction of the slot 23. The cooling pipe 24 is located outside the die core sleeve 21 and is wound around the die core sleeve 21. In this embodiment, the cooling water pipe is preferably a flexible hose, and the cooling water pipe is glued to the groove wall of the slot 23 with strong adhesive. This allows the die core sleeve 21 to be inserted into the slot 23, which can compress the cooling water pipe to deform it and better fit the die core sleeve 21, thereby improving the cooling effect on the material passing through the inside of the die core sleeve 21.

[0029] Reference Figure 1 and Figure 2 The inlet and outlet of the cooling pipe 24 are both exposed to the outside and connected to the circulation equipment through the wall thickness of the extrusion die head 2. The inlet of the cooling pipe 24 is located on the side of the extrusion die head 2 away from the extruder body 1, so that the temperature of the end of the die core sleeve 21 away from the extruder body 1 is lower than that of the other side, which can achieve a gentle cooling of the material passing through and avoid changes in the quality of the solidified material due to rapid cooling.

[0030] The die sleeve 21 has multiple circumferentially spaced docking posts 212 at one end near the extruder body 1. The first flange 11 has a corresponding number of docking slots at one end near the extrusion die 2, and the multiple docking posts 212 are inserted into the docking slots one by one. The cooling pipes 24 are arranged at intervals at the end away from the extruder body 1 and the end of the extrusion die 2. The outer peripheral wall of the die sleeve 21 away from the docking posts 212 is integrally formed with a convex ring 213. The outer peripheral wall of the convex ring 213 abuts against the groove wall of the slot 23, thereby enabling both ends of the die sleeve 21 to be supported and to remain concentric with the discharge end of the extruder body 1. In addition, the die sleeve 21 will not shift and squeeze the cooling water pipe on one side, causing uneven cooling.

[0031] Reference Figure 1 and Figure 2 The outer wall of the protruding ring 213 is fixedly provided with a positioning strip, and the slot wall of the slot 23 is provided with a positioning groove. The positioning strip is inserted into the positioning groove so that multiple docking posts 212 can be aligned with the corresponding docking grooves, which facilitates installation.

[0032] Combination Figure 1 Reference Figure 2 and Figure 3 The extrusion die head 2 has a sliding groove 25 on the top outer wall of the side away from the extruder body 1, which communicates with the slot 23. An adjustment groove 26 is provided at the end of the extrusion die head 2 away from the extruder body 1. The adjustment groove 26 extends in the same direction as the sliding groove 25, and the two grooves communicate with each other. The locking pin assembly 3 includes a locking pin 31 and an unlocking rod 32. The locking pin 31 is inserted into and moves within the sliding groove 25. One end of the locking pin 31 is located in the locking groove 211, and the other end is located in the sliding groove 25, making it difficult for the die core sleeve 21 to disengage from the slot 23, thus locking the die core sleeve 21.

[0033] The locking pin 31 has a threaded groove on the side near the adjusting groove 26. One end of the unlocking rod 32 passes through the adjusting groove 26 and is inserted into the threaded groove, and is threadedly connected to the locking pin 31. The end of the adjusting rod away from the locking pin 31 protrudes out of the adjusting groove 26 so that the user can drive the unlocking rod 32 to move the locking pin 31, so that the locking pin 31 can be completely disengaged from the locking groove 211 to achieve unlocking.

[0034] Combination Figure 1 Reference Figure 2 and Figure 3The outer wall of the extrusion die head 2 is provided with a threaded groove 27, and a sliding groove 25 is provided at the bottom of the threaded groove 27. A threaded post 28 is threadedly installed in the threaded groove 27. A spring 29 is provided between the locking pin 31 and the threaded post 28. The two ends of the spring 29 are respectively pressed against the locking pin 31 and the threaded post 28, thereby driving the locking pin 31 to always tend to be inserted into the locking groove 211, so that the locking pin 31 is not easily dislodged from the locking groove 211 due to the vibration generated by the extruder body 1 during operation.

[0035] A drive square post 281 is fixedly provided at the end of the threaded post 28 away from the spring 29. The drive square post 281 protrudes from the threaded groove 27 and is exposed outside the extrusion die head 2. When driving the threaded post 28 to rotate to achieve disassembly and assembly, the operator can use a wrench to hold the drive square post 281 to drive the threaded post 28 to rotate.

[0036] The implementation principle of an extruder for producing sealing rings according to an embodiment of this application is as follows: The connection between the first flange 11 and the second flange 22 via multiple bolts improves the stability of the connection between the extruder body 1 and the extrusion die 2. When producing sealing rings with different cross-sectional shapes, it is not necessary to disassemble the extrusion die 2. Simply move the unlocking lever 32 outside the extrusion die 2 to completely disengage the locking pin 31 from the locking groove 211, and then pull out the die core sleeve 21 to replace it with one of a different cross-sectional shape. During installation of the die core sleeve 21, the positioning strip is inserted into the positioning groove, ensuring that multiple mating posts 212 are precisely inserted into the mating groove one-to-one. Under the action of the spring 29, one end of the locking pin 31 is located in the locking groove 211, and the other end is located in the sliding groove 25, thus locking the die core sleeve 21. The cooling pipe 24 allows the material passing through the die core sleeve 21 to cool and solidify, ensuring the quality of the subsequently produced sealing rings.

[0037] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. An extruder for producing sealing rings, characterized in that: The extruder includes an extruder body (1) and an extrusion die (2). The extrusion die (2) is installed on the discharge end of the extruder body (1) by multiple bolts. A core sleeve (21) is inserted inside the extrusion die (2). The core sleeve (21) is inserted into the extrusion die (2) at the end away from the extruder body (1). The core sleeve (21) is connected to the discharge end of the extruder body (1) to restrict the shape of the extruded material. The extrusion die (2) is provided with a locking pin group (3). The outer wall of the core sleeve (21) is provided with a locking groove (211). One end of the locking pin group (3) is inserted into the locking groove (211) to lock the core sleeve (21) into the extrusion die (2). One end of the locking pin group (3) is exposed outside the extrusion die (2) for user operation to unlock.

2. The extruder for producing sealing rings according to claim 1, characterized in that: The extruder body (1) has a first flange (11) fixedly installed at the discharge end, and the extrusion die (2) has a second flange (22) fixedly installed at one end near the first flange (11). The first flange (11) and the second flange (22) are fixedly connected by multiple bolts.

3. The extruder for producing sealing rings according to claim 1, characterized in that: The extrusion die (2) is provided with a cooling pipe (24), which is located outside the die core sleeve (21) and is arranged in a winding state around the die core sleeve (21).

4. The extruder for producing sealing rings according to any one of claims 1-3, characterized in that: The extrusion die (2) has a slot (23) at one end near the extruder body (1). The slot (23) passes through the extrusion die (2). The die core sleeve (21) is inserted into the slot (23). The outer wall of the extrusion die (2) has a sliding groove (25). The sliding groove (25) communicates with the slot (23). The locking pin group (3) is inserted into the sliding groove (25) and moves within the sliding groove (25).

5. The extruder for producing sealing rings according to claim 4, characterized in that: The locking pin assembly (3) includes a locking pin (31), one end of which is located in the locking groove (211) and the other end is located in the sliding groove (25).

6. The extruder for producing sealing rings according to claim 5, characterized in that: The extrusion die (2) has an adjustment groove (26) at one end away from the extruder body (1). The adjustment groove (26) extends in the same direction as the sliding groove (25). The adjustment groove (26) and the sliding groove (25) are interconnected. The locking pin group (3) also includes an unlocking rod (32). The unlocking rod (32) is inserted into the adjustment groove (26) and threadedly connected to the locking pin (31). The end of the unlocking rod (32) away from the locking pin (31) protrudes out of the adjustment groove (26).

7. The extruder for producing sealing rings according to claim 6, characterized in that: The outer wall of the extrusion die (2) is provided with a threaded groove (27), the sliding groove (25) is provided at the bottom of the threaded groove (27), a threaded post (28) is installed in the threaded groove (27), a spring (29) is provided between the locking pin (31) and the threaded post (28), and the two ends of the spring (29) are respectively pressed against the locking pin (31) and the threaded post (28).

8. The extruder for producing sealing rings according to claim 7, characterized in that: The threaded post (28) is fixedly provided with a drive column (281) at one end away from the spring (29), and the drive column (281) is adapted for wrench clamping.

9. The extruder for producing sealing rings according to claim 4, characterized in that: The die core sleeve (21) has a docking post (212) that is inserted into the extruder body (1) at one end, and the outer peripheral wall of the die core sleeve (21) away from the docking post (212) abuts against the groove wall of the slot (23).

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