Plastic pipe extrusion molding die

Abstract

The utility model relates to the field of pipe production, and discloses a plastic pipe extrusion molding mouth mold which comprises a mold body, an injection molding assembly is arranged on one side of the mold body, a discharging channel is formed in one side of the mold body, a core mold is arranged in an inner cavity of the discharging channel, and a cutting and cleaning mechanism is arranged on one side of the mold body. The plastic pipe extrusion molding mouth mold comprises a core mold and a discharging channel, a scraping ring is arranged on the outer ring of the core mold, four mounting blocks are fixedly connected to the outer ring of the core mold, first external threads are arranged on the outer rings of the mounting blocks, and first internal threads are arranged in an inner cavity of the discharging channel. The core mold and the discharging channel are separated through the cooperation of the first external thread and the first internal thread, then the core mold is pulled out, plastic raw materials in the discharging channel can be scraped out through the cooperation of the scraping ring in the process while the mold body and the core mold are separated, taken out and cleaned, and the problem that the discharging channel of an existing forming mouth mold is difficult to clean conveniently is solved.

Description

Technical Field

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

[0002] Plastic pipe extrusion dies are an important component in plastic extrusion production. Their main function is to guide molten plastic, plasticized by the extruder, through the cavity of the die to form a preform that meets the process requirements. After cooling and solidification, these preforms are transformed into the desired plastic products.

[0003] Patent CN220661677U discloses a plastic pipe extrusion die, which includes a first die body and an injection device. A second die body is installed in the middle of one side of the outer surface of the first die body, and a discharge channel is opened in the middle of one side of the outer surface of the second die body. The device is provided with a first threaded connecting ring and a second threaded connecting ring for screwing together with the external threaded ring and threaded block of the injection device. This allows the first die body and the core die assembly to be fixed on the injection device, and the first die body and the core die assembly to be disassembled and separated, thereby facilitating the cleaning of the core die assembly and the discharge channel.

[0004] However, this device only separates the injection equipment from the first mold body and the core mold from the injection equipment through the first and second threaded connecting rings and the external threaded ring, which facilitates the cleaning of the internal structure. After separating the core mold assembly from the first and second mold bodies, it is still necessary to use cleaning tools to reach into the discharge channel, and it is difficult to guarantee that the inside can be cleaned thoroughly. Therefore, a plastic pipe extrusion die is proposed to solve the problem that the existing molding die is difficult to clean the discharge channel conveniently. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a plastic pipe extrusion die, which solves the aforementioned problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a plastic pipe extrusion die, comprising a die body, an injection molding component on one side of the die body, a discharge channel on one side of the die body, a core mold in the inner cavity of the discharge channel, a cutting and cleaning mechanism on one side of the die body, a scraper ring on the outer ring of the core mold, four mounting blocks fixedly connected to the outer ring of the core mold, a first external thread on the outer ring of the mounting blocks, a first internal thread on the inner cavity of the discharge channel, a second external thread on the inner ring of the scraper ring, a second internal thread on the outer ring of the core mold, and a feed inlet through one side of the scraper ring.

[0009] Preferably, the core mold is installed in the inner cavity of the discharge channel via a first external thread and a first internal thread, and the scraper ring is installed on the outer ring of the core mold via a second external thread and a second internal thread.

[0010] Preferably, the feed inlet and the inner cavity of the discharge channel are interconnected, and the outer ring of the scraper ring fits against the cavity wall of the discharge channel but does not compress it.

[0011] Preferably, the injection molding assembly includes a connecting ring fixedly connected to one side of the mold body, the inner cavity of the connecting ring is provided with an injection inlet tube, and a sealing ring is provided at the contact point between the connecting ring and the injection inlet tube.

[0012] Preferably, the sealing ring is fixedly connected to the outer ring of the connecting ring, and the outer ring of the connecting ring is provided with bolts, which penetrate the connecting ring to the inner wall of the injection inlet pipe.

[0013] Preferably, the cutting and cleaning mechanism includes a fixed base fixedly connected to the outside of the mold body, a motor fixedly connected to one side of the fixed base, a cutting blade rotatably connected to the other side of the fixed base, the output shaft of the motor fixedly connected to the cutting blade, a base plate fixedly connected to one side of the mold body, and a second fixed base fixedly connected to the top of the base plate.

[0014] Preferably, a scraper strip is fixedly connected to one side of the second fixing seat. The distance between the scraper strip and the mold body is equal to the thickness of the cutting scissors. A collection box is provided on the top of the base plate. A T-shaped groove is opened on the top of the base plate. A T-shaped block is provided in the inner cavity of the T-shaped groove. The T-shaped block is fixedly connected to the collection box. There is a frictional force between the T-shaped block and the T-shaped groove that can keep the collection box stationary.

[0015] (III) Beneficial Effects

[0016] 1. When it is necessary to clean the inside of the discharge channel of this plastic pipe extrusion die, the core die is rotated, and the core die is separated from the discharge channel by the first external thread and the first internal thread. Then the core die is pulled out, so that the mold body and the core die can be separated and removed for cleaning at the same time. During the process, the plastic raw material in the discharge channel can be scraped out by the scraper ring, which solves the problem that the existing molding die is difficult to clean the discharge channel conveniently.

[0017] 2. When it is necessary to clean one side of the die body, the motor on one side of the fixed seat drives the cutting blade to rotate, which can clean one side of the die body. At the same time, when the cutting blade rotates to pass the scraper on the side of the second fixed seat, the impurities attached to the cutting blade will fall into the collection box. The T-shaped block in the T-slot facilitates the removal and cleaning of the collection box, thus improving the functionality of this plastic pipe extrusion die. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present utility model;

[0019] Figure 2 This is a schematic diagram of the core mold of this utility model;

[0020] Figure 3 This is a right view of the structure of this utility model;

[0021] Figure 4 The structure of this utility model Figure 3 Sectional view at point AA.

[0022] In the diagram: 1. Mold body; 2. Injection molding assembly; 201. Connecting ring; 202. Injection inlet pipe; 203. Sealing ring; 204. Bolt; 3. Discharge channel; 4. Core mold; 5. Cutting and cleaning mechanism; 501. Fixing base; 502. Motor; 503. Cutting shears; 504. Base plate; 505. Second fixing base; 506. Scraper strip; 507. Collection box; 508. T-slot; 509. T-block; 6. Scraper ring; 7. Mounting block; 8. First external thread; 9. First internal thread; 10. Second external thread; 11. Second internal thread; 12. Inlet. Detailed Implementation

[0023] 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.

[0024] Example: Please refer to Figure 1-4 A plastic pipe extrusion die includes a die body 1, an injection molding component 2 on one side of the die body 1, a discharge channel 3 on one side of the die body 1, a core mold 4 in the inner cavity of the discharge channel 3, a cutting and cleaning mechanism 5 on one side of the die body 1, a scraper ring 6 on the outer ring of the core mold 4, four mounting blocks 7 fixedly connected to the outer ring of the core mold 4, a first external thread 8 on the outer ring of the mounting blocks 7, a first internal thread 9 in the inner cavity of the discharge channel 3, a second external thread 10 on the inner ring of the scraper ring 6, a second internal thread 11 on the outer ring of the core mold 4, and a feed inlet 12 penetrating one side of the scraper ring 6.

[0025] Furthermore, the core mold 4 is installed in the inner cavity of the discharge channel 3 through the first external thread 8 and the first internal thread 9, and the scraper ring 6 is installed on the outer ring of the core mold 4 through the second external thread 10 and the second internal thread 11.

[0026] Furthermore, the feed inlet 12 is connected to the inner cavity of the discharge channel 3, and the outer ring of the scraper ring 6 fits against the cavity wall of the discharge channel 3 but does not squeeze it.

[0027] Furthermore, the injection molding assembly 2 includes a connecting ring 201 fixedly connected to one side of the mold body 1, the inner cavity of the connecting ring 201 is provided with an injection inlet tube 202, and a sealing ring 203 is provided at the contact point between the connecting ring 201 and the injection inlet tube 202.

[0028] Furthermore, the sealing ring 203 is fixedly connected to the outer ring of the connecting ring 201. The outer ring of the connecting ring 201 is provided with a bolt 204, which penetrates the connecting ring 201 to the inner wall of the injection inlet pipe 202. The raw material is introduced from the injection inlet pipe 202 into the discharge channel 3 through the injection molding equipment. When it is necessary to clean the injection inlet pipe 202, the bolt 204 is unscrewed, and the injection inlet pipe 202 can be removed from the outside of the connecting ring 201, which facilitates the cleaning of the plastic pipe extrusion die.

[0029] Furthermore, the cutting and cleaning mechanism 5 includes a fixed base 501 fixedly connected to the outside of the mold body 1. A motor 502 is fixedly connected to one side of the fixed base 501, and a cutting blade 503 is rotatably connected to the other side of the fixed base 501. The output shaft of the motor 502 is fixedly connected to the cutting blade 503. A base plate 504 is fixedly connected to one side of the mold body 1, and a second fixed base 505 is fixedly connected to the top of the base plate 504.

[0030] Furthermore, a scraper strip 506 is fixedly connected to one side of the second fixed seat 505. The distance between the scraper strip 506 and the mold body 1 is equal to the thickness of the cutting shears 503. A collection box 507 is provided on the top of the base plate 504. A T-slot 508 is opened on the top of the base plate 504. A T-block 509 is provided in the inner cavity of the T-slot 508. The T-block 509 is fixedly connected to the collection box 507. There is friction between the T-block 509 and the T-slot 508 that allows the collection box 507 to remain stationary. When it is necessary to clean one side of the mold body 1, the motor 502 on one side of the fixed seat 501 drives the cutting scissors 503 to rotate, which can clean one side of the mold body 1. At the same time, when the cutting scissors 503 rotates to pass the scraper 506 on the side of the second fixed seat 505, the impurities attached to the cutting scissors 503 will fall into the collection box 507. With the T-shaped block 509 in the T-slot 508, it is easy to remove and clean the collection box 507, thus improving the functionality of this plastic pipe extrusion die.

[0031] Working principle: When using this plastic pipe extrusion die, the raw material is injected into the discharge channel 3 inside the mold body 1 through the injection molding component 2 and the injection molding equipment. The raw material passes through the inlet 12, and the core mold 4 can be used to extrude the formed pipe from the other side of the mold body 1. When it is necessary to clean the inside of the discharge channel 3, the core mold 4 is rotated, and the first external thread 8 and the first internal thread 9 are used to separate the core mold 4 from the discharge channel 3. Then the core mold 4 is pulled out, realizing the separation and cleaning of the mold body 1 and the core mold 4. During the process, the scraper ring 6 can scrape out the plastic raw material in the discharge channel 3, which solves the problem that it is difficult to clean the discharge channel of the existing molding die. The raw material is introduced into the discharge channel 3 from the injection inlet pipe 202 through the injection molding equipment. When it is necessary to clean the injection inlet pipe 202, the bolt 204 is unscrewed, and the injection inlet pipe 202 can be removed from the outside of the connecting ring 201, which facilitates the cleaning of the plastic pipe extrusion die.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] 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 die for extruding plastic pipes, comprising a die body (1), characterized in that: An injection molding assembly (2) is provided on one side of the mold body (1). A discharge channel (3) is provided on one side of the mold body (1). A core mold (4) is provided in the inner cavity of the discharge channel (3). A cutting and cleaning mechanism (5) is provided on one side of the mold body (1). A scraper ring (6) is provided on the outer ring of the core mold (4). Four mounting blocks (7) are fixedly connected to the outer ring of the core mold (4). A first external thread (8) is provided on the outer ring of the mounting blocks (7). A first internal thread (9) is provided in the inner cavity of the discharge channel (3). A second external thread (10) is provided on the inner ring of the scraper ring (6). A second internal thread (11) is provided on the outer ring of the core mold (4). A feed inlet (12) is provided through one side of the scraper ring (6).

2. The extrusion die for plastic pipes according to claim 1, characterized in that: The core mold (4) is installed in the inner cavity of the discharge channel (3) through the first external thread (8) and the first internal thread (9), and the scraper ring (6) is installed on the outer ring of the core mold (4) through the second external thread (10) and the second internal thread (11).

3. The extrusion die for plastic pipes according to claim 1, characterized in that: The feed inlet (12) is connected to the inner cavity of the discharge channel (3), and the outer ring of the scraper ring (6) fits against the cavity wall of the discharge channel (3) but does not squeeze.

4. The extrusion die for plastic pipes according to claim 1, characterized in that: The injection molding assembly (2) includes a connecting ring (201) fixedly connected to one side of the mold body (1). The inner cavity of the connecting ring (201) is provided with an injection inlet pipe (202), and a sealing ring (203) is provided at the contact point between the connecting ring (201) and the injection inlet pipe (202).

5. The extrusion die for plastic pipes according to claim 4, characterized in that: The sealing ring (203) is fixedly connected to the outer ring of the connecting ring (201). The outer ring of the connecting ring (201) is provided with a bolt (204), which penetrates the connecting ring (201) to the inner wall of the injection inlet pipe (202).

6. The extrusion die for plastic pipes according to claim 1, characterized in that: The cutting and cleaning mechanism (5) includes a fixed base (501) fixedly connected to the outside of the mold body (1). A motor (502) is fixedly connected to one side of the fixed base (501), and a cutting blade (503) is rotatably connected to the other side of the fixed base (501). The output shaft of the motor (502) is fixedly connected to the cutting blade (503). A base plate (504) is fixedly connected to one side of the mold body (1), and a second fixed base (505) is fixedly connected to the top of the base plate (504).

7. The extrusion die for a plastic pipe according to claim 6, characterized in that: A scraper strip (506) is fixedly connected to one side of the second fixed seat (505). The distance between the scraper strip (506) and the mold body (1) is equal to the thickness of the cutting shears (503). A collection box (507) is provided on the top of the base plate (504). A T-slot (508) is opened on the top of the base plate (504). A T-block (509) is provided in the inner cavity of the T-slot (508). The T-block (509) is fixedly connected to the collection box (507). There is a frictional force between the T-block (509) and the T-slot (508) that can keep the collection box (507) stationary.

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