Pipe extrusion die

The use of limit blocks and locking blocks facilitates the installation and disassembly of the mold core and mounting shaft, solving the problem of low efficiency in existing mold replacement and achieving high efficiency and economy in mold replacement.

CN224348358UActive Publication Date: 2026-06-12SHIJIAZHUANG WEIJIU PIPE IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHIJIAZHUANG WEIJIU PIPE IND CO LTD
Filing Date
2025-10-20
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

The existing pipe extrusion die requires bolt removal during replacement, resulting in low replacement efficiency and poor economy.

Method used

The design employs a limit block and locking block structure, which facilitates the installation and disassembly of the mold core and mounting shaft through sliding connection of the limit block and locking block engagement. Combined with the design of pull rope and elastic element, it achieves stable installation and convenient replacement of the mold core and mounting shaft.

🎯Benefits of technology

It improves the efficiency of mold replacement, reduces the complexity and cost of replacement, and enhances the economic benefits of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of pipe extrusion, concretely to a pipe extrusion die, including mould body, the right side of mould body is established with the placement groove, the inside slide coupling of placement groove has mould core, the outside one side fixed connection of mould core has a plurality of limit piece no.
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Description

Technical Field

[0001] This utility model relates to the field of pipe extrusion technology, and more specifically, to a pipe extrusion die. Background Technology

[0002] In the production of plastic pipes, an extrusion die is typically used to extrude the raw material and form the plastic pipe.

[0003] A search revealed a pipe extrusion die in the prior art, with patent publication number CN222495331U. The specification states that: first, the wall-pressing component can flatten the inner wall of the pipe output from the flow channel to improve the smoothness of the inner wall of the pipe; second, it facilitates the modification and upgrading of existing dies, and can increase the smoothness of the inner wall of the pipe without increasing the size or length of the die.

[0004] However, in actual use, different types of molds are required when processing different types of pipes, which requires disassembling the bolts on the molds. This makes mold replacement more complicated, resulting in lower replacement efficiency and lower economic efficiency. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pipe extrusion die to solve the problem that in the prior art, when replacing the die, it is necessary to disassemble the bolts on the die, which makes the die replacement more complicated, resulting in lower replacement efficiency and lower economic efficiency.

[0006] To solve the above technical problems, this utility model provides the following technical solution: a pipe extrusion mold, including a mold body, a placement groove is provided on the right side of the mold body, a mold core is slidably connected inside the placement groove, a plurality of limiting blocks are fixedly connected to one side of the outer side of the mold core, an installation shaft is slidably connected to the other side of the inner and outer sides of the mold core, a plurality of limiting blocks are fixedly connected to the outer side of the installation shaft, two slots are provided on the outer side of the installation shaft, a locking block is engaged inside the slot, and the locking block is slidably connected inside the mold body.

[0007] The mold body has two mounting slots inside. The end of the locking block away from the slot is fixedly connected to a mounting plate. The end of the mounting plate away from the locking block is fixedly connected to a pull rope. The end of the pull rope away from the mounting plate is fixedly connected to a rotating rod. An elastic element is sleeved on the outside of the pull rope.

[0008] The second limiting block has multiple slots on its right side, and multiple protrusions are fixedly connected to the inner wall of the slots. A plug is inserted into the inside of the slot, and the plug is fixedly connected to the first limiting block. Multiple grooves are formed on the outside of the plug.

[0009] One of the limiting blocks is shorter than the other two limiting blocks, and one of the limiting blocks is shorter than the other two limiting blocks. Both the limiting block one and the limiting block two are slidably connected inside the placement groove, and the mounting shaft is slidably connected inside the placement groove.

[0010] The card block is slidably connected inside the mounting groove, the mounting plate is slidably connected inside the mounting groove, the pull rope is slidably connected inside the mounting groove, and the rotating rod is rotatably connected inside the mold body.

[0011] One end of the elastic element is fixedly connected to the inner wall of the mounting groove, and the other end of the elastic element is fixedly connected to the mounting plate.

[0012] The protrusion slides against the outside of the insert block, and the protrusion fits into the inside of the corresponding groove.

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

[0014] In the above solution, by using limiting blocks of different sizes to limit the mounting shaft, the shaft core and the mounting shaft can be installed conveniently. The mounting shaft is then secured inside the mounting groove by a locking block, making it easy to replace the mold core and the mounting shaft. This results in high replacement efficiency and good economic efficiency. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 For the present utility model Figure 2 Cross-sectional view of the structure at point AA;

[0018] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A in the middle;

[0019] Figure 5 For the present utility model Figure 2 Cross-sectional view of the structure at point BB;

[0020] Figure 6 For the present utility model Figure 4 Enlarged view of the structure at point B in the middle;

[0021] Figure 7 This is a schematic diagram of the insert structure of this utility model.

[0022] [Figure Labels]

[0023] 1. Mold body; 2. Placement slot; 3. Mold core; 4. Mounting shaft; 5. Slot; 6. Block; 7. Limiting block one; 8. Mounting slot; 9. Mounting piece; 10. Pull rope; 11. Elastic component; 12. Rotating rod; 13. Limiting block two; 14. Slot; 15. Protrusion; 16. Insertion block; 17. Groove. Detailed Implementation

[0024] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0025] Example 1: Please refer to Figures 1 to 7 This utility model provides a technical solution: a pipe extrusion mold, including a mold body 1, a placement groove 2 on the right side of the mold body 1, a mold core 3 slidably connected inside the placement groove 2, the placement groove 2 providing installation space for the mold core 3, a plurality of limiting blocks 13 fixedly connected to one side of the outside of the mold core 3, one of the limiting blocks 13 being shorter than the other two limiting blocks 13, an installation shaft 4 slidably connected to the other side of the outside of the inside of the mold core 3, the installation shaft 4 being slidably connected inside the placement groove 2, thereby enabling precise installation of the mold core 3, a plurality of limiting blocks 7 fixedly connected to the outside of the installation shaft 4, one of the limiting blocks 7 being shorter than the other two limiting blocks 7, both the limiting blocks 7 and the limiting blocks 13 being slidably connected inside the placement groove 2, thereby enabling precise installation of the installation shaft 4, two slots 5 are provided on the outside of the installation shaft 4, a locking block 6 is engaged inside the slots 5, the locking block 6 being slidably connected inside the mold body 1, so that the installation shaft 4 is limited.

[0026] When it is necessary to install the mold core 3 and the mounting shaft 4, the mold core 3 is slid into the interior of the placement groove 2, so that the limiting block 13 can slide into the corresponding position inside the placement groove 2. Then, the mounting shaft 4 is slid into the interior of the placement groove 2, so that the mold core 3 can pass through the mounting shaft 4, and the limiting block 7 can slide into the corresponding position inside the placement groove 2. This allows the mold core 3 and the mounting shaft 4 to be installed conveniently. Then, the two locking blocks 6 are moved to the same side, so that the locking blocks 6 can engage with the interior of the locking groove 5, thereby limiting the mounting shaft 4. This allows the mold core 3 and the mounting shaft 4 to be installed conveniently. Conversely, they can be easily disassembled.

[0027] Example 2: Based on Example 1, in order to facilitate the pulling of the locking block 6, two mounting grooves 8 are opened inside the mold body 1. The locking block 6 is slidably connected inside the mounting groove 8, and the mounting groove 8 provides moving space for the locking block 6. The end of the locking block 6 away from the locking groove 5 is fixedly connected to the mounting piece 9. The mounting piece 9 is slidably connected inside the mounting groove 8. The mounting groove 8 limits the mounting piece 9, allowing the mounting piece 9 to slide smoothly. The end of the mounting piece 9 away from the locking block 6 is fixedly connected to the pull rope 10. The pull rope 10 is slidably connected inside the mounting groove 8. The mounting groove 8 limits the pull rope 10, allowing the pull rope 10 to slide smoothly. The end of the pull rope 10 away from the mounting piece 9 is fixedly connected to the rotating rod 12. The rotating rod 12 is rotatably connected inside the mold body 1. The mold body 1 limits the rotating rod 12, allowing the rotating rod 12 to rotate stably. An elastic element 11 is sleeved on the outside of the pull rope 10. One end of the elastic element 11 is fixedly connected to the inner wall of the mounting groove 8, and the other end of the elastic element 11 is fixedly connected to the mounting piece 9.

[0028] When the slot 5 needs to be pulled, the rotating rod 12 is rotated so that one end of the pull rope 10 is wound around it, and the other end of the pull rope 10 pulls the mounting piece 9 inward. This causes the mounting piece 9 to compress the elastic element 11 and deform, and the mounting piece 9 pulls the locking block 6 into the interior of the mounting groove 8. Conversely, by releasing the rotating rod 12, the elastic element 11 is reset, and the elastic element 11 pushes the mounting piece 9 inward, and the mounting piece 9 pushes the locking block 6 to engage with the interior of the slot 5.

[0029] Example 3: Based on Example 2, in order to achieve more stable installation of the mold core 3 and the mounting shaft 4, multiple slots 14 are provided on the right side of the limiting block 2 13. Multiple protrusions 15 are fixedly connected to the inner wall of the slot 14. Insertion blocks 16 are inserted into the inside of the slot 14, so that the insertion blocks 16 can be limited. The protrusions 15 slide against the outside of the insertion blocks 16, so that the insertion blocks 16 can be squeezed and deformed. The insertion blocks 16 are fixedly connected to the limiting block 1 7. Multiple grooves 17 are provided on the outside of the insertion blocks 16. The protrusions 15 fit into the inside of the corresponding grooves 17, so that the insertion blocks 16 can be limited.

[0030] When the mold core 3 is in contact with the mounting shaft 4, the insert 16 can slide into the interior of the slot 14, causing the insert 16 to be squeezed and deformed, and allowing the insert 16 to slide against the outside of the protrusion 15, thereby allowing the insert 16 to perform a reset movement, so that the insert 16 fills the interior of the slot 14, and the protrusion 15 fits against the interior of the groove 17, thereby connecting the second limiting block 13 and the first limiting block 7, thus making the installation of the mold core 3 and the mounting shaft 4 more stable.

[0031] The working process of this utility model is as follows:

[0032] When it is necessary to install the mold core 3 and the mounting shaft 4, by rotating the rotating rod 12, one end of the pull rope 10 is wound around the rotating rod 12, so that the other end of the pull rope 10 pulls the mounting piece 9 inward, thereby causing the mounting piece 9 to compress the elastic element 11 and deform, and causing the mounting piece 9 to pull the locking block 6 into the interior of the mounting groove 8. At this time, the mold core 3 is slid into the interior of the placement groove 2, so that the second limiting block 13 slides into the corresponding position inside the placement groove 2. Then, the mounting shaft 4 is slid into the interior of the placement groove 2, so that the mold core 3 passes through the mounting shaft 4, and the first limiting block 7 slides into the corresponding position inside the placement groove 2, thereby facilitating the installation of the mold core 3 and the mounting shaft 4. When the mold core 3 and the mounting shaft 4 are in contact, the insert 16 slides into the interior of the slot 14, so that the insert 16 is compressed and deformed, and the insert 1... 6 can slide against the outside of the protrusion 15, thereby allowing the insert 16 to perform a reset movement, allowing the insert 16 to fill the inside of the slot 14, and allowing the protrusion 15 to fit against the inside of the groove 17, thereby connecting the second limiting block 13 with the first limiting block 7, thus making the installation of the mold core 3 and the mounting shaft 4 more stable. When the mold core 3 fits against the inner wall of the placement groove 2, by releasing the rotating rod 12, the elastic element 11 can perform a reset movement, thereby allowing the elastic element 11 to push the mounting piece 9 to move inward, thereby allowing the mounting piece 9 to push the locking block 6 to engage with the inside of the locking groove 5, thereby limiting the mounting shaft 4, thus making the mold core 3 and the mounting shaft 4 easy to install, and the mold core 3 and the mounting shaft 4 easy to replace, and vice versa, making disassembly more convenient, thus making replacement more efficient and economical to use.

[0033] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0034] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipe extrusion die, characterized in that, The mold body (1) includes a placement groove (2) on the right side of the mold body (1). A mold core (3) is slidably connected inside the placement groove (2). Multiple limiting blocks (13) are fixedly connected to one side of the outside of the mold core (3). An installation shaft (4) is slidably connected to the other side of the inside and outside of the mold core (3). Multiple limiting blocks (7) are fixedly connected to the outside of the installation shaft (4). Two slots (5) are opened on the outside of the installation shaft (4). A locking block (6) is locked inside the slot (5). The locking block (6) is slidably connected inside the mold body (1).

2. The pipe extrusion die according to claim 1, characterized in that, The mold body (1) has two mounting slots (8) inside. The end of the locking block (6) away from the slot (5) is fixedly connected to the mounting piece (9). The end of the mounting piece (9) away from the locking block (6) is fixedly connected to the pull rope (10). The end of the pull rope (10) away from the mounting piece (9) is fixedly connected to the rotating rod (12). The pull rope (10) is fitted with an elastic element (11).

3. The pipe extrusion die according to claim 2, characterized in that, Multiple slots (14) are provided on the right side of the second limiting block (13). Multiple protrusions (15) are fixedly connected to the inner wall of the slot (14). A plug (16) is inserted into the inside of the slot (14). The plug (16) is fixedly connected to the first limiting block (7). Multiple grooves (17) are provided on the outside of the plug (16).

4. The pipe extrusion die according to claim 1, characterized in that, One of the limiting blocks (7) is shorter in length than the other two limiting blocks (7), and one of the limiting blocks (13) is shorter in length than the other two limiting blocks (13). The limiting blocks (7) and the limiting blocks (13) are slidably connected inside the placement groove (2), and the mounting shaft (4) is slidably connected inside the placement groove (2).

5. The pipe extrusion die according to claim 2, characterized in that, The card block (6) is slidably connected inside the mounting groove (8), the mounting piece (9) is slidably connected inside the mounting groove (8), the pull rope (10) is slidably connected inside the mounting groove (8), and the rotating rod (12) is rotatably connected inside the mold body (1).

6. The pipe extrusion die according to claim 2, characterized in that, One end of the elastic element (11) is fixedly connected to the inner wall of the mounting groove (8), and the other end of the elastic element (11) is fixedly connected to the mounting piece (9).

7. The pipe extrusion die according to claim 3, characterized in that, The protrusion (15) slides against the outside of the insert (16), and the protrusion (15) fits against the inside of the corresponding groove (17).