Pipe extrusion molding die

Abstract

The utility model relates to the technical field of pipe extrusion forming, and disclose a kind of pipe extrusion forming mould, including left mould body, the left mould body one side is provided with right mould body, left mould body one side is equipped with locating post, the inside sliding connection of locating post has fixed column, fixed column one side is provided with driving mechanism, right mould body one side is provided with sealing tape, the one side of sealing tape is provided with the buffer mechanism of buffering sealing tape, left mould body one side is rotatably connected with the extrusion plate of sealing tape extrusion, extrusion plate middle part is provided with the stable mechanism of driving extrusion plate to open and close, the equipment makes locating plate and fixed plate realize rigid connection, realize the stability of left mould body and right mould body moulding, prevent its parting surface exist gap, improve vacuum sealing effect, reduce the moment extrusion pressure of repeated opening and closing operation, improve sealing tape service life, finally improve the forming quality of pipe and the stability of vacuum environment.

Description

Technical Field

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

[0002] A tube vacuum extrusion molding die is a precision tool used to extrude plastic materials under high pressure in a vacuum environment, continuously forming them into tubular products through a specific cavity cross section. Its core function is to precisely guide and control the flow and deformation of materials under vacuum degassing conditions, giving the tube the required inner and outer diameter dimensions, wall thickness and shape, and ensuring that the tube blank is dense, uniform and free of air bubbles through the shaping section, ultimately achieving efficient and continuous production of high-precision, high-quality seamless tubes.

[0003] According to a pipe mold disclosed in Chinese Patent Publication No. CN222987527U, it includes a material tank, an extrusion tube welded to one side wall of the material tank, and a limiting tube fixed inside the extrusion tube. A feeding tube is horizontally installed on the side of the material tank opposite to the extrusion tube, and a motor is connected to the top wall of the material tank near the feeding tube. The output shaft of the feeding tube is coaxially connected to an inner edge shaft, and a spiral auger for feeding is installed on the inner edge shaft. A knob is rotatably connected to the top wall of the material tank near the extrusion tube. A top plate is welded to the top wall of the inner cavity of the material tank below the knob. An inner groove is formed inside the top plate, and two meshing bevel gears are provided in the inner groove. An inner support shaft is coaxially connected to each of the two bevel gears, and one of the inner support shafts is coaxially connected to the knob.

[0004] However, the aforementioned devices and existing pipe extrusion molding dies still have shortcomings. When using pipe vacuum extrusion molding dies, the lack of rigid connection between the dies, which relies solely on sealing rings for sealing, leads to gaps at the parting surface of the dies, compromising the vacuum sealing effect. At the same time, repeated opening and closing operations and instantaneous extrusion accelerate the aging of the sealing rings, reducing their elasticity and further exacerbating leakage problems, ultimately affecting the forming quality of the pipes and the stability of the vacuum environment.

[0005] Therefore, we propose a pipe extrusion molding die to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a pipe extrusion molding die to solve the problem mentioned in the background art that the molds rely solely on sealing rings for sealing, which lacks rigid connection, and that repeated opening and closing operations will accelerate the aging of the sealing rings.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A pipe extrusion molding die includes a left die body, a right die body for closing the die is disposed on one side of the left die body, a positioning post for closing and positioning the left and right die bodies is installed on one side of the left die body, a fixing post for closing and fixing the left and right die bodies is slidably connected inside the positioning post, a driving mechanism for driving the fixing post to rotate is disposed on one side of the fixing post, a sealing strip for sealing is disposed on one side of the right die body, a buffering mechanism for buffering the sealing strip is disposed on one side of the sealing strip, an extrusion plate for extruding the sealing strip is rotatably connected to one side of the left die body, and a stabilizing mechanism for driving the extrusion plate to open and close is disposed in the middle of the extrusion plate.

[0008] Preferably, a fixing plate is fixedly connected to the surface of the left mold body, and one end of the fixing plate is fixedly connected to the positioning post. A positioning plate is fixedly connected to the surface of the right mold body, and a positioning hole is opened on the surface of the positioning plate. The positioning post is slidably connected in the positioning hole, and one end of the positioning post is beveled to facilitate connection with the positioning hole.

[0009] Preferably, the driving mechanism includes a cylinder fixedly connected inside the positioning column, the output shaft of the cylinder is fixedly connected to a slidable rack, the rack is slidably connected inside the positioning column, a gear is rotatably connected inside the positioning column, one end of the gear is fixedly connected to one end of the fixed column, and the rack meshes with the surface of the gear.

[0010] Preferably, the buffer mechanism includes a drive plate fixedly connected to one side of the sealing strip, a rotatable extrusion column rotatably connected to one side of the drive plate, a movable block rotatably connected to one end of the extrusion column, and the movable block slidably connected to one side of the right mold body.

[0011] Preferably, one side of the drive plate is slidably connected to one side of the right mold body to facilitate the movement of the drive plate. One end of the moving block is fixedly connected to a spring, and one end of the spring is fixedly connected to the inside of the right mold body to provide a buffering force for the moving block.

[0012] Preferably, the stabilizing mechanism includes a rack two fixedly connected to one side of the drive plate, a gear two meshing on the surface of the rack two, and the gear two fixedly connected to the middle of the extrusion plate for driving the extrusion plate to rotate.

[0013] Preferably, the surface of the extrusion plate is fixedly connected with a plurality of sealing strips for sealing, and the surfaces of the plurality of sealing strips contact the interior of the left mold body.

[0014] Preferably, a torsion spring for resetting the extrusion plate is fixedly connected to the surface of the extrusion plate, and one end of the torsion spring is fixedly connected to the inside of the left mold body.

[0015] Preferably, a compression buffer rubber pad is fixedly connected to the surface of the fixed column, and the rubber pad contacts one side of the positioning plate surface.

[0016] Preferably, both the left mold body and the right mold body have cooling grooves on their sides for cooling the left mold body and the right mold body, and protective plates are embedded in the cooling grooves.

[0017] Compared with the prior art, the beneficial effects achieved by this utility model are: When the left and right mold bodies are closed, the fixed plate and the positioning plate close, causing the positioning pin to insert into the positioning hole, thus ensuring the accuracy of the left and right mold bodies during mold closing. The cylinder drives the rack to slide inside the positioning pin, causing the rack to drive the gear to rotate, which in turn causes the positioning pin to rotate inside the positioning pin. This causes the fixed pin to drive the rubber pad to contact one side of the positioning plate surface, pressing the positioning plate and achieving a rigid connection between the positioning plate and the fixed plate. This ensures the stability of the left and right mold bodies during mold closing, prevents gaps at the parting surface, and improves the vacuum sealing effect.

[0018] When the left and right mold bodies are closed, the sealing strip compresses the drive plate, which in turn causes the extrusion column to unfold. The extrusion column then causes the moving block to slide on one side of the right mold body, compressing the spring and thus buffering the sealing strip. This reduces the instantaneous extrusion force from repeated opening and closing operations, extends the service life of the sealing strip, and ultimately improves the forming quality of the pipe and the stability of the vacuum environment.

[0019] When the drive plate moves, it causes the rack two to move, which in turn causes the gear two to rotate. The gear two then causes the extrusion plate to open and close, and the extrusion plate causes the sealing strip to be held and fixed, preventing the sealing strip from shifting and enhancing its sealing effect. When the drive plate is released, the rack two disengages from the gear two, causing the torsion spring to reset the extrusion plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the buffer mechanism structure of this utility model; Figure 4 This is a schematic diagram of the stabilizing mechanism of this utility model; Figure 5 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0021] The components are as follows: 1. Left mold body; 2. Right mold body; 3. Positioning post; 4. Fixing post; 5. Sealing strip; 6. Extrusion plate; 7. Fixing plate; 8. Positioning plate; 9. Positioning hole; 10. Cylinder; 11. Rack 1; 12. Gear 1; 13. Drive plate; 14. Extrusion post; 15. Moving block; 16. Spring; 17. Rack 2; 18. Gear 2; 19. Sealing strip; 20. Rubber pad; 21. Cooling tank; 22. Protective plate; 23. Torsion spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 This utility model provides a technical solution: like Figures 1-5 As shown, a pipe extrusion molding die includes a left die body 1. A right die body 2 for mold closing is provided on one side of the left die body 1. A positioning post 3 for mold closing and positioning of the left die body 1 and the right die body 2 is installed on one side of the left die body 1. A fixing post 4 for mold closing and fixing of the left die body 1 and the right die body 2 is slidably connected inside the positioning post 3. A driving mechanism for driving the fixing post 4 to rotate is provided on one side of the fixing post 4. A sealing strip 5 for sealing is provided on one side of the right die body 2. A buffering mechanism for buffering the sealing strip 5 is provided on one side of the sealing strip 5. An extrusion plate 6 for extruding the sealing strip 5 is rotatably connected to one side of the left die body 1. A stabilizing mechanism for driving the extrusion plate 6 to open and close is provided in the middle of the extrusion plate 6. A fixing plate 7 is fixedly connected to the surface of the left die body 1. One end of the fixing plate 7 is fixedly connected to the positioning post 3. A positioning plate 8 is fixedly connected to the surface of the right die body 2. A positioning hole 9 is opened on the surface of the positioning plate 8. The positioning post 3 is slidably connected in the positioning hole 9. One end of the positioning post 3 is beveled to facilitate connection with the positioning hole 9.

[0024] like Figures 1-5As shown, when the left mold body 1 and the right mold body 2 are closed, the fixing plate 7 and the positioning plate 8 are closed, driving the positioning pin 3 to insert into the positioning hole 9, thus ensuring the accuracy of the left mold body 1 and the right mold body 2 when closing. The driving mechanism drives the fixing pin 4 to rotate, so that one end of the fixing pin 4 contacts the surface of the positioning plate 8, making the positioning plate 8 and the fixing plate 7 rigidly connected, preventing gaps at the parting surface and improving the vacuum sealing effect. At the same time, when the left mold body 1 and the right mold body 2 are closed, the buffering mechanism buffers the sealing strip 5 during extrusion, while the stabilizing mechanism drives the extrusion plate 6 to close, clamping the sealing strip 5 to prevent the sealing strip 5 from shifting, while strengthening the sealing effect of the sealing strip 5, and reducing the instantaneous pressure of repeated opening and closing operations, thus improving the service life of the sealing strip 5, and ultimately improving the forming quality of the pipe and the stability of the vacuum environment.

[0025] Furthermore, such as Figure 2 and Figure 5 As shown, the driving mechanism includes a cylinder 10 fixedly connected inside the positioning post 3. The output shaft of the cylinder 10 is fixedly connected to a slidable rack 11. The rack 11 is slidably connected inside the positioning post 3. A gear 12 is rotatably connected inside the positioning post 3. One end of the gear 12 is fixedly connected to one end of the fixed post 4. The surfaces of the rack 11 and the gear 12 mesh. A compression buffer rubber pad 20 is fixedly connected to the surface of the fixed post 4. The rubber pad 20 contacts one side of the surface of the positioning plate 8.

[0026] The cylinder 10 drives the rack 11 to slide inside the positioning post 3, which in turn drives the gear 12 to rotate. The gear 12 then drives the positioning post 3 to rotate inside the positioning post 3, causing the fixing post 4 to drive the rubber pad 20 to contact one side of the positioning plate 8 and press the positioning plate 8. This results in a rigid connection between the positioning plate 8 and the fixing plate 7, ensuring the stability of the left mold body 1 and the right mold body 2 when they are closed.

[0027] Furthermore, such as Figure 3 and Figure 4 As shown, the buffer mechanism includes a drive plate 13 fixedly connected to one side of the sealing strip 5. A rotatable extrusion column 14 is rotatably connected to one side of the drive plate 13. A moving block 15 is rotatably connected to one end of the extrusion column 14. The moving block 15 is slidably connected to one side of the right mold body 2. One side of the drive plate 13 is slidably connected to one side of the right mold body 2 to facilitate the movement of the drive plate 13. A spring 16 is fixedly connected to one end of the moving block 15. One end of the spring 16 is fixedly connected to the inside of the right mold body 2 to provide buffering force for the moving block 15.

[0028] When the left mold body 1 and the right mold body 2 are closed, the sealing strip 5 drives the drive plate 13 to compress, the drive plate 13 drives the extrusion column 14 to unfold, the extrusion column 14 drives the moving block 15 to slide on one side of the right mold body 2, and the moving block 15 compresses the spring 16 to buffer the sealing strip 5 and reduce the instantaneous extrusion force of repeated opening and closing operations.

[0029] Furthermore, such as Figure 3 and Figure 4 As shown, the stabilizing mechanism includes a rack 17 fixedly connected to one side of the drive plate 13, a gear 18 meshing on the surface of the rack 17, and the gear 18 fixedly connected to the middle of the extrusion plate 6 for driving the extrusion plate 6 to rotate. Several sealing strips 19 are fixedly connected to the surface of the extrusion plate 6 for sealing. The surfaces of the sealing strips 19 contact the inside of the left mold body 1. A torsion spring 23 for resetting the extrusion plate 6 is fixedly connected to the surface of the extrusion plate 6. One end of the torsion spring 23 is fixedly connected to the inside of the left mold body 1.

[0030] When the drive plate 13 moves, it causes the rack 17 to move, which in turn causes the gear 18 to rotate. The gear 18 then causes the pressing plate 6 to open and close, which in turn causes the sealing strip 19 to hold and fix the sealing strip 5, preventing it from shifting and enhancing its sealing effect. When the drive plate 13 is released, the rack 17 disengages from the gear 18, causing the torsion spring 23 to reset the pressing plate 6.

[0031] Furthermore, such as Figure 1 and Figure 2 As shown, both the left mold body 1 and the right mold body 2 have cooling grooves 21 on their sides for cooling the left mold body 1 and the right mold body 2, and a protective plate 22 is embedded in the cooling grooves 21.

[0032] Coolant is circulated through the cooling tank 21 to cool the pipes inside the left mold body 1 and the right mold body 2. The protective plate 22 is used to protect the cooling tank 21.

[0033] The working principle of this pipe extrusion molding die is as follows: When the left mold body 1 and the right mold body 2 are closed, the fixed plate 7 and the positioning plate 8 are closed, which drives the positioning pin 3 to be inserted into the positioning hole 9, thus ensuring the accuracy of the left mold body 1 and the right mold body 2 when they are closed. The cylinder 10 drives the rack 11 to slide inside the positioning pin 3, which drives the gear 12 to rotate. The gear 12 drives the positioning pin 3 to flip inside the positioning pin 3, which causes the fixed pin 4 to drive the rubber pad 20 to contact one side of the surface of the positioning plate 8 and squeeze the positioning plate 8. This makes the positioning plate 8 and the fixed plate 7 rigidly connected, thus ensuring the stability of the left mold body 1 and the right mold body 2 when they are closed, preventing gaps at the parting surface and improving the vacuum sealing effect.

[0034] When the left mold body 1 and the right mold body 2 are closed, the sealing strip 5 drives the drive plate 13 to compress, the drive plate 13 drives the extrusion column 14 to unfold, the extrusion column 14 drives the moving block 15 to slide on one side of the right mold body 2, and the moving block 15 compresses the spring 16, thereby buffering the sealing strip 5, reducing the instantaneous extrusion force of repeated opening and closing operations, improving the service life of the sealing strip 5, and ultimately improving the forming quality of the pipe and the stability of the vacuum environment.

[0035] When the drive plate 13 moves, it causes the rack 17 to move, which in turn causes the gear 18 to rotate. The gear 18 then causes the pressing plate 6 to open and close, which in turn causes the sealing strip 19 to hold and fix the sealing strip 5, preventing it from shifting and enhancing its sealing effect. When the drive plate 13 is released, the rack 17 disengages from the gear 18, causing the torsion spring 23 to reset the pressing plate 6.

[0036] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe extrusion molding die, comprising a left die body (1), characterized in that, The left mold body (1) has a right mold body (2) for mold closing on one side. The left mold body (1) has a positioning column (3) for mold closing and positioning of the left mold body (1) and the right mold body (2) on one side. The positioning column (3) has a fixed column (4) for mold closing and fixing of the left mold body (1) and the right mold body (2) slidably connected inside. The fixed column (4) has a driving mechanism for driving the fixed column (4) to flip on one side. The right mold body (2) has a sealing strip (5) for sealing on one side. The sealing strip (5) has a buffering mechanism for buffering on one side. The left mold body (1) has a rotatably connected extrusion plate (6) for extruding the sealing strip (5). The extrusion plate (6) has a stabilizing mechanism for driving the extrusion plate (6) to open and close in the middle.

2. The pipe extrusion die according to claim 1, characterized in that: The surface of the left mold body (1) is fixedly connected to a fixing plate (7), one end of the fixing plate (7) is fixedly connected to a positioning post (3), the surface of the right mold body (2) is fixedly connected to a positioning plate (8), the surface of the positioning plate (8) is provided with a positioning hole (9), the positioning post (3) is slidably connected in the positioning hole (9), one end of the positioning post (3) is at an angle, which facilitates connection with the positioning hole (9).

3. The pipe extrusion die according to claim 2, characterized in that: The driving mechanism includes a cylinder (10) fixedly connected inside the positioning column (3). The output shaft of the cylinder (10) is fixedly connected to a sliding rack (11). The rack (11) is slidably connected inside the positioning column (3). A gear (12) is rotatably connected inside the positioning column (3). One end of the gear (12) is fixedly connected to one end of the fixed column (4). The rack (11) meshes with the surface of the gear (12).

4. The pipe extrusion die according to claim 1, characterized in that: The buffer mechanism includes a drive plate (13) fixedly connected to one side of the sealing strip (5), a rotatable extrusion column (14) rotatably connected to one side of the drive plate (13), a moving block (15) rotatably connected to one end of the extrusion column (14), and the moving block (15) slidably connected to one side of the right mold body (2).

5. A pipe extrusion molding die according to claim 4, characterized in that: The drive plate (13) is slidably connected to one side of the right mold body (2) to facilitate the movement of the drive plate (13). One end of the moving block (15) is fixedly connected to a spring (16), and one end of the spring (16) is fixedly connected to the inside of the right mold body (2) to provide buffering force for the moving block (15).

6. The pipe extrusion die according to claim 1, characterized in that: The stabilizing mechanism includes a rack two (17) fixedly connected to one side of the drive plate (13), a gear two (18) meshing on the surface of the rack two (17), and the gear two (18) fixedly connected to the middle of the extrusion plate (6) for driving the extrusion plate (6) to rotate.

7. A pipe extrusion die according to claim 6, characterized in that: The surface of the extrusion plate (6) is fixedly connected with several sealing strips (19) for sealing, and the surface of the several sealing strips (19) contacts the interior of the left mold body (1).

8. A pipe extrusion die according to claim 7, characterized in that: The extrusion plate (6) is fixedly connected to a torsion spring (23) for resetting the extrusion plate (6), and one end of the torsion spring (23) is fixedly connected to the inside of the left mold body (1).

9. A pipe extrusion molding die according to claim 3, characterized in that: The surface of the fixed column (4) is fixedly connected with a compression buffer rubber pad (20), and the rubber pad (20) contacts one side of the surface of the positioning plate (8).

10. A pipe extrusion die according to claim 1, characterized in that: The left mold body (1) and the right mold body (2) are both provided with cooling grooves (21) for cooling the left mold body (1) and the right mold body (2), and a protective plate (22) is embedded in the cooling grooves (21).

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