Pipe extrusion die

Abstract

The utility model discloses a pipe extrusion die. The pipe extrusion die comprises an extrusion die body, the extrusion die has the advantages that the outer sliding ring and the second fixing screw rod are arranged, so that sliding adjustment of the outer sliding ring on the outer side of the extrusion die body is achieved, the outer sliding ring drives the second fixing screw rod to move, the second fixing screw rod enters second mounting holes in the first fixing disc and the second fixing disc, and the inner die core is arranged in the extrusion die body. Then a second nut is installed on the outer side of a second fixing screw in a threaded mode, an outer sliding ring, a first fixing disc and a second fixing disc are stably installed, and installation and fixation between the extrusion die body and the die base are completed in combination with sealing between a second metal sealing ring and a first sealing groove; and meanwhile, the extrusion mold body is detached from the interior of the mold base, so that the interior of the extrusion mold body is conveniently maintained and cleaned, and a mold head, a spiral cold water guide pipe and a communicating water pipe are arranged, so that the primary cooling treatment on the discharging position of the extrusion pipe is realized.

Description

Technical Field

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

[0002] Pipe extrusion dies are a type of forming die. Their discharge method is achieved through the extrusion action. Located at the front end of the extruder, they are used to make pipes or profiles. The main function of pipe dies is to extrude molten plastic material through the specific shape of the die to form the required pipe shape. It changes the molten plastic from the extruder from a spiral motion to a linear motion, generating the necessary forming pressure to ensure that the plastic part has an intact shape and a dense interior, and to further plasticize the plastic as it passes through the die head. Traditional pipe extrusion dies are mostly integrated designs. During long-term use, it is difficult to disassemble the pipe extrusion die separately, and it is difficult to clean and maintain the die. Utility Model Content

[0003] The purpose of this utility model is to provide a pipe extrusion die to solve the problem mentioned in the background art that most traditional pipe extrusion dies are designed as an integrated unit, making it difficult to disassemble, clean, and maintain the die during long-term use.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pipe extrusion die, comprising:

[0005] Extruded die;

[0006] An inner mold core is placed inside the extrusion die body, and an inner flow divider ring is provided on the outer side of the inner mold core. The outer side of the inner flow divider ring is fixedly connected to the extrusion die body.

[0007] The flow dividers are equidistantly spaced inside the inner flow divider ring.

[0008] The No. 1 fixing screw is equidistantly arranged on one side of the inner mold core;

[0009] An inner forming mold core is installed on one side of an inner mold core. The inner forming mold core has multiple mounting holes of the first fixing screw that are equidistantly opened inside.

[0010] Nut No. 1 is placed on one side of mounting hole No. 1, and nut No. 1 is engaged with fixing screw No. 1.

[0011] The die head is installed on one side of the extrusion die body;

[0012] The die holder is installed on the side of the extrusion die away from the die head.

[0013] As a preferred embodiment of this utility model, it further includes an outer sliding ring, which is slidably disposed on the outside of the extrusion die body. A plurality of No. 2 fixing screws are fixedly connected at equal intervals on one side of the outer sliding ring. A No. 1 fixing plate is fixedly connected to the outside of the extrusion die body. A No. 2 fixing plate is fixedly connected to the outside of the die base. A plurality of No. 2 mounting holes that cooperate with the No. 2 fixing screws are equally spaced inside the No. 1 and No. 2 fixing plates. A plurality of No. 2 nuts that cooperate with the No. 2 fixing screws are equally spaced on one side of the No. 2 fixing plate.

[0014] As a preferred embodiment of this utility model: multiple limiting sliders are fixedly connected at equal intervals inside the outer sliding ring, and multiple limiting grooves that cooperate with the limiting sliders are opened at equal intervals on the outer side of the extrusion die, and the limiting sliders are slidably connected to the limiting grooves.

[0015] As a preferred embodiment of this utility model: a spiral cooling water pipe is fixedly connected inside the die head, and a connecting water pipe is fixedly connected to both ends of the spiral cooling water pipe; a first flange is fixedly connected to the outside of the die head; a second flange is fixedly connected to the outside of the extrusion die body; and the first flange and the second flange are installed together by bolts.

[0016] As a preferred embodiment of this utility model: a No. 1 metal sealing ring is fixedly connected to one side of the extrusion die body, a No. 2 sealing groove that mates with the No. 1 metal sealing ring is opened on the inner side of the die head, a No. 2 metal sealing ring is fixedly connected to the other side of the extrusion die body, and a No. 1 sealing groove that mates with the No. 2 metal sealing ring is opened on the inner side of the die base.

[0017] As a preferred embodiment of this utility model, a No. 3 flange is fixedly connected to the outer side of the mold base.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, by setting an outer sliding ring and a second fixing screw, realizes the sliding adjustment of the outer sliding ring on the outside of the extrusion die body. The outer sliding ring drives the second fixing screw to move, and the second fixing screw enters the second mounting hole in the first fixing plate and the second fixing plate. Then, the second nut is installed on the outer thread of the second fixing screw, and the outer sliding ring, the first fixing plate and the second fixing plate are stably installed. Combined with the seal between the second metal sealing ring and the first sealing groove, the installation and fixation between the extrusion die body and the die base are completed. At the same time, the extrusion die body can be disassembled from the die base to facilitate maintenance and cleaning of the extrusion die body. By setting a die head, a spiral cooling water pipe and a connecting water pipe, the discharge position of the extruded pipe is preliminarily cooled, avoiding softening, collapse or deformation of the pipe surface. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a disassembly diagram of the extrusion die of this utility model;

[0021] Figure 3 This is a disassembly diagram of the inner forming mold core of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the extrusion die of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the mold head of this utility model.

[0024] In the diagram: 1. Extrusion die body; 2. Metal sealing ring No. 1; 3. Inner die core; 4. Inner diverter ring; 5. Diverter hole; 6. Fixing screw No. 1; 7. Inner forming die core; 8. Mounting hole No. 1; 9. Nut No. 1; 10. Die head; 11. Flange No. 1; 12. Flange No. 2; 13. Spiral cooling water pipe; 14. Connecting water pipe; 15. Outer sliding ring; 16. Limiting slider; 17. Limiting groove; 18. Fixing plate No. 1; 19. Mounting hole No. 2; 20. Fixing screw No. 2; 21. Fixing plate No. 2; 22. Nut No. 2; 23. Die base; 24. Flange No. 3; 25. Sealing groove No. 1; 26. Metal sealing ring No. 2. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1 to 5 This utility model provides a technical solution: a pipe extrusion die, comprising: an extrusion die body 1; an inner die core 3 placed inside the extrusion die body 1, an inner flow divider ring 4 fixedly connected to the outer side of the inner die core 3, the outer side of the inner flow divider ring 4 being fixedly connected to the extrusion die body 1; flow divider holes 5 equidistantly opened inside the inner flow divider ring 4; a first fixing screw 6 equidistantly fixed to one side of the inner die core 3; an inner forming die core 7 installed on one side of the inner die core 3, the inner forming die core 7 having multiple first mounting holes 8 equidistantly opened inside to cooperate with the first fixing screw 6; a first nut 9 placed on one side of the first mounting hole 8, the first nut 9 cooperating with the first fixing screw 6; a die head 10 installed on one side of the extrusion die body 1; and a die base 23 installed on the side of the extrusion die body 1 away from the die head 10.

[0027] It should be noted that, in this embodiment, after disassembling and cleaning the extrusion die 1, when installing the inner forming die core 7 and the inner die core 3, the multiple first mounting holes 8 opened in the inner forming die core 7 cooperate with the first fixing screw 6, and the first mounting holes 8 are threaded on the outer side of the first fixing screw 6. At this time, the inner forming die core 7 can be installed and fixed on one side of the inner die core 3. Then, the die head 10 is installed on one side of the extrusion die 1. The first metal sealing ring 2 cooperates with the second sealing groove opened on the inner side of the die head 10 to improve the sealing effect between the extrusion die 1 and the die head 10. The first flange 11 and the second flange 12 are installed and fixed with bolts, so that the die head 10 can be stably installed on one side of the extrusion die 1. When installing the extrusion die 1 on one side of the die base 23, the outer sliding ring 15 is pushed on the extrusion die 1. The outer sliding ring 15 drives the limiting slider 16 to slide within the limiting groove 17. The outer sliding ring 15 drives the second fixing screw 20 into the second mounting hole 19 in the first fixing plate 18 and the second fixing plate 21. At the same time as the installation and positioning are completed, the second metal sealing ring 26 enters the first sealing groove 25 to complete the connection and sealing between the extrusion die 1 and the die base 23. By installing the second nut 22 on the outer thread of the second fixing screw 20, the extrusion die 1 can be stably fixed on one side of the die base 23. The extruded material enters the extrusion die 1 through the die base 23. Through the cooperation of the inner forming die core 7, the extrusion die 1 and the die head 10, the tube is formed. Coolant is introduced into the spiral cooling water pipe 13 through the connecting water pipe 14. The coolant performs preliminary cooling treatment on the tube extruded in the die head 10 through the spiral cooling water pipe 13.

[0028] In one embodiment, such as Figures 1 to 4 As shown, it also includes an outer sliding ring 15, which is slidably disposed on the outside of the extrusion die 1. A plurality of second fixing screws 20 are fixedly connected at equal intervals on one side of the outer sliding ring 15. A first fixing plate 18 is fixedly connected to the outside of the extrusion die 1, and a second fixing plate 21 is fixedly connected to the outside of the die base 23. A plurality of second mounting holes 19 that cooperate with the second fixing screws 20 are equally spaced inside the first fixing plate 18 and the second fixing plate 21. A plurality of second nuts 22 that cooperate with the second fixing screws 20 are equally spaced on one side of the second fixing plate 21.

[0029] It should be noted that in this embodiment, the No. 2 fixing screw 20 on one side of the outer sliding ring 15 cooperates with the No. 2 mounting hole 19 in the No. 1 fixing plate 18 and the No. 2 fixing plate 21. The No. 2 fixing screw 20 on one side of the outer sliding ring 15 passes through the No. 1 fixing plate 18 and the No. 2 mounting hole 19 in the No. 2 fixing plate 21. Then, the No. 2 nut 22 is threaded on the outside of the No. 2 fixing screw 20, so that the extrusion die 1 can be stably installed on one side of the die base 23.

[0030] In one embodiment, such asFigures 1 to 4 As shown, multiple limiting sliders 16 are fixedly connected at equal intervals inside the outer sliding ring 15, and multiple limiting grooves 17 that cooperate with the limiting sliders 16 are opened at equal intervals on the outer side of the extrusion die 1. The limiting sliders 16 and the limiting grooves 17 are slidably connected.

[0031] It should be noted that in this embodiment, the limiting slider 16 and the limiting groove 17 limit the sliding, and the outer sliding ring 15 drives the limiting slider 16 to slide within the limiting groove 17, ensuring that the outer sliding ring 15 slides stably on the outside of the extrusion die 1. The opening of the limiting groove 17 does not affect the overall strength of the extrusion die 1.

[0032] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a spiral cooling water pipe 13 is fixedly connected inside the die head 10, and a connecting water pipe 14 is fixedly connected to both ends of the spiral cooling water pipe 13. A first flange 11 is fixedly connected to the outside of the die head 10, and a second flange 12 is fixedly connected to the outside of the extrusion die body 1. The first flange 11 and the second flange 12 are installed together by bolts.

[0033] It should be noted that in this embodiment, cooling water is injected into the spiral cooling water pipe 13 through one of the connecting water pipes 14 and discharged through the other connecting water pipe 14, so as to perform preliminary cooling treatment on the discharge position of the extruded pipe and avoid softening, collapse or deformation of the pipe surface.

[0034] In one embodiment, such as Figures 1 to 5 As shown, a No. 1 metal sealing ring 2 is fixedly connected to one side of the extrusion die 1, and a No. 2 sealing groove that mates with the No. 1 metal sealing ring 2 is opened on the inner side of the die head 10. A No. 2 metal sealing ring 26 is fixedly connected to the other side of the extrusion die 1, and a No. 1 sealing groove 25 that mates with the No. 2 metal sealing ring 26 is opened on the inner side of the die base 23.

[0035] It should be noted that in this embodiment, the sealing effect between the extrusion die 1, the die head 10 and the die base 23 is improved by the matching arrangement between the metal sealing ring and the sealing groove.

[0036] In one embodiment, such as Figures 1 to 3 As shown, flange 24 is fixed to the outer side of mold base 23.

[0037] It should be noted that, in this embodiment, it is convenient to connect the mold base 23 with external components.

[0038] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the terms "first," "second," "third," and "fourth" 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," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Although 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 embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe extrusion die, characterized in that, include: Extrusion die (1); The inner mold core (3) is placed inside the extrusion die body (1). An inner flow divider ring (4) is provided on the outer side of the inner mold core (3). The outer side of the inner flow divider ring (4) is fixedly connected to the extrusion die body (1). Diverting holes (5) are equidistantly opened inside the inner diverting ring (4); The first fixing screw (6) is equidistantly arranged on one side of the inner mold core (3); An inner forming mold core (7) is installed on one side of an inner mold core (3). The inner forming mold core (7) has multiple first mounting holes (8) that cooperate with the first fixing screw (6) at equal intervals inside. Nut No. 1 (9) is placed on one side of mounting hole No. 1 (8), and nut No. 1 (9) is engaged with fixing screw No. 1 (6); Die head (10) is installed on one side of the extrusion die body (1); The die holder (23) is installed on the side of the extrusion die (1) away from the die head (10).

2. The pipe extrusion die according to claim 1, characterized in that: It also includes an outer sliding ring (15), which is slidably disposed on the outside of the extrusion die (1). A plurality of second fixing screws (20) are fixedly connected at equal intervals on one side of the outer sliding ring (15). A first fixing plate (18) is fixedly connected to the outside of the extrusion die (1). A second fixing plate (21) is fixedly connected to the outside of the die base (23). A plurality of second mounting holes (19) that cooperate with the second fixing screws (20) are equally spaced inside the first fixing plate (18) and the second fixing plate (21). A plurality of second nuts (22) that cooperate with the second fixing screws (20) are equally spaced on one side of the second fixing plate (21).

3. The pipe extrusion die according to claim 2, characterized in that: The outer sliding ring (15) has multiple limiting sliders (16) fixedly connected at equal intervals inside. The outer side of the extrusion die (1) has multiple limiting grooves (17) that cooperate with the limiting sliders (16). The limiting sliders (16) and the limiting grooves (17) are slidably connected.

4. The pipe extrusion die according to claim 1, characterized in that: A spiral cooling water pipe (13) is fixedly connected inside the die head (10), and a connecting water pipe (14) is fixedly connected to both ends of the spiral cooling water pipe (13). A first flange (11) is fixedly connected to the outside of the die head (10), and a second flange (12) is fixedly connected to the outside of the extrusion die body (1). The first flange (11) and the second flange (12) are installed together by bolts.

5. A pipe extrusion die according to claim 1, characterized in that: A first metal sealing ring (2) is fixedly connected to one side of the extrusion die (1), and a second sealing groove that cooperates with the first metal sealing ring (2) is opened on the inner side of the die head (10). A second metal sealing ring (26) is fixedly connected to the other side of the extrusion die (1), and a first sealing groove (25) that cooperates with the second metal sealing ring (26) is opened on the inner side of the die base (23).

6. A pipe extrusion die according to claim 1, characterized in that: The outer side of the mold base (23) is fixed with a No. 3 flange (24).

Images