Extrusion head of plastic extruder

Abstract

The utility model relates to the technical field of film production, in particular to an extrusion head of a plastic extruder. According to the technical scheme, the device comprises a shell, a first motor, a connecting cover and a supporting ring, the first motor is installed on one side of the outer wall of the upper end of the shell, a fixing block is arranged on the outer wall of one end of the first motor, sliding grooves are formed in the outer walls of the upper side and the lower side of the fixing block, and sliding blocks are slidably installed in the sliding grooves; a connecting cover is mounted on the outer wall of the end, penetrating through the sliding groove, of the sliding block, a supporting ring is mounted on one side of the inner wall of the connecting cover, a bearing is mounted on the inner wall of the supporting ring, an extrusion mold is rotatably mounted in the bearing, and a gear is mounted on the outer wall of one side of the extrusion mold. The effect of replacing the extrusion die is achieved, residual materials on the inner wall of the extrusion die are scraped and cleaned through a scraping plate, the residual material storage amount on the inner wall of the extrusion die is reduced, and the residual materials are prevented from polluting equipment.

Description

Technical Field

[0001] This utility model relates to the field of film production technology, specifically to the extrusion head of a plastic extruder. Background Technology

[0002] A film is a thin, soft, transparent sheet. Made of plastics, adhesives, rubber, or other materials, film materials refer to thin metal or organic layers with a thickness ranging from a single atom to several millimeters. Plastic films are typically processed by hot-melt extrusion using a screw extruder.

[0003] Patent publication number CN107031010A discloses a hot melt extruder for processing film packaging materials, including a machine body, which is a horizontally arranged cylinder. An inner cylinder is located inside the machine body and is coaxially arranged with the machine body. A material hopper is located on the upper left side of the machine body, and the bottom end of the hopper is connected to a vertically arranged feeding pipe. A feeding connector is located on the upper side inside the feeding pipe. The feeding connector includes a screw, screw blades arranged on the outer wall of the screw, and a motor connected to the screw. This hot melt extruder for film processing can continuously and evenly feed materials without clogging. It can pre-crush raw materials, effectively improving extrusion efficiency. The extrusion die can be changed without stopping the machine, facilitating cleaning and replacement without manual operation. The cooling rate within the extrusion device can be controlled by a solenoid valve and a temperature sensor to ensure cooling effect. Furthermore, it has good shock absorption and positioning effects, improving the working stability of the extruder and effectively reducing noise caused by vibration.

[0004] While the existing technology CN107031010A has many advantages during use, it still has the following problems: its cleaning structure for the material inside the extrusion head causes the material inside the extrusion head to slip out when the extrusion head is replaced. The slipped material will contaminate the equipment and is not conducive to subsequent cleaning. Utility Model Content

[0005] The purpose of this invention is to provide an extrusion head for a plastic extruder to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plastic extruder extrusion head, comprising a housing, a first motor, a connecting cover, and a support ring. The first motor is installed on one side of the upper outer wall of the housing. A fixing block is provided on the outer wall of one end of the first motor. Sliding grooves are provided on both the upper and lower outer walls of the fixing block. A slider is slidably installed inside the sliding groove. A connecting cover is installed through the outer wall of one end of the sliding groove. A support ring is installed on one side of the inner wall of the connecting cover. A bearing is installed on the inner wall of the support ring. An extrusion die is rotatably installed inside the bearing. A gear is installed on one side of the outer wall of the extrusion die.

[0007] When using the extrusion head of the plastic extruder in this technical solution, the electric push rod pulls the connecting cover to move horizontally, causing the connecting cover to disengage from the outer shell. The material inside the extrusion die flows and slides down through the gap between the outer shell and the connecting cover. The operator manually picks up a collection basin to collect the sliding material. Meanwhile, the second motor drives the extrusion die to rotate via gears, thereby causing the scraper to scrape and clean the residual material on the inner wall of the extrusion die, reducing the amount of residual material on the inner wall of the extrusion die and preventing residual material from contaminating the equipment. Afterward, the operator only needs to clean the different extrusion dies. The first motor drives the fixing block and the connecting cover to rotate circumferentially, thereby adjusting the position of the two extrusion dies to ensure that the shape and size of the extrusion dies meet the requirements. Then, the material enters the outer shell through the hopper and is heated by the first heating device and the second heating device. Afterward, it is pushed by the screw to move into the extrusion die for extrusion molding.

[0008] Preferably, a hopper is provided on one side of the upper outer wall of the outer shell, the hopper is used to store raw materials, and the raw materials enter the interior of the outer shell through the hopper;

[0009] The shell contains a screw, which is driven to rotate by an external motor, thereby moving the raw materials inside the shell.

[0010] Preferably, a second heating device is provided on one side of the inner wall of the outer shell, and the second heating device preheats the raw materials inside the outer shell;

[0011] The inner wall of the outer shell opposite to the second heating device is provided with a first heating device, which fully heats the raw materials inside the outer shell, causing the raw materials inside the outer shell to melt.

[0012] Preferably, the fixing block is driven to rotate by the first motor, which can drive the connecting cover to rotate circumferentially, thereby changing the usage position of the connecting cover;

[0013] The outer wall dimensions of the connecting cover are consistent with the outer wall dimensions of the outer shell, and the connecting cover is located on one side of the outer shell.

[0014] Preferably, a sealing ring is fixedly attached to one side of the outer wall of the connecting cover, and the sealing ring ensures the sealing between the connecting cover and the outer shell.

[0015] Preferably, a sealing gasket is attached and fixed to one side of the inner wall of the connecting cover, and the sealing gasket is in contact with the outer wall of the extrusion die, and the sealing gasket ensures the sealing between the extrusion die and the connecting cover.

[0016] Preferably, the inner wall of the extrusion die is designed in a conical shape, and the extrusion die can control the shape and size of the extruded material.

[0017] Preferably, an electric push rod is installed on one side of the outer wall of the fixing block, and one end of the electric push rod is connected to the connecting cover.

[0018] Preferably, a second motor is installed on one side of the inner wall of the connecting cover, and a drive wheel is provided on the outer wall of one end of the second motor. The drive wheel meshes with a gear, and the second motor drives the extrusion die to rotate circumferentially through the drive wheel and the gear.

[0019] Preferably, a scraper is installed on one side of the inner wall of the connecting cover. The scraper is located inside the extrusion mold and can clean the material on the inner wall of the extrusion mold.

[0020] Compared with the prior art, the beneficial effects of this utility model are: by setting up a scraper, a first motor and a second motor, this utility model achieves the effect of replacing the extrusion mold. The scraper scrapes and cleans the residual material on the inner wall of the extrusion mold, reducing the amount of residual material on the inner wall of the extrusion mold and avoiding residual material contamination of the equipment. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the outer shell structure of this utility model;

[0022] Figure 2 This is an enlarged schematic diagram of the connecting cover structure of this utility model;

[0023] Figure 3 For the present utility model Figure 2 A partially enlarged schematic diagram of the central connecting cover structure.

[0024] In the diagram: 1. Outer shell; 11. First heating device; 12. Second heating device; 13. Screw; 14. Hopper; 2. First motor; 21. Fixing block; 22. Slide groove; 23. Sliding block; 24. Electric push rod; 25. Connecting cover; 26. Sealing ring; 27. Scraper; 28. Sealing gasket; 29. ​​Second motor; 3. Support ring; 31. Bearing; 32. Extrusion die; 33. Gear. 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 3 The present invention provides two embodiments:

[0027] Example 1: A plastic extruder extrusion head includes a housing 1, a first motor 2, a connecting cover 25, and a support ring 3. The first motor 2 is installed on one side of the upper outer wall of the housing 1. A fixing block 21 is provided on the outer wall of one end of the first motor 2. Slide grooves 22 are provided on both the upper and lower outer walls of the fixing block 21. A slider 23 is slidably installed inside the slide groove 22. The connecting cover 25 is installed on one side of the outer wall of the slide groove 22 through the slider 23. A support ring 3 is installed on one side of the inner wall of the connecting cover 25. A bearing 31 is installed on the inner wall of the support ring 3. An extrusion die 32 is rotatably installed inside the bearing 31. A gear 33 is installed on one side of the outer wall of the extrusion die 32.

[0028] The fixed block 21 is driven to rotate by the first motor 2, which can drive the connecting cover 25 to rotate in a circular motion, thereby changing the usage position of the connecting cover 25.

[0029] The outer wall dimensions of the connecting cover 25 are consistent with the outer wall dimensions of the outer shell 1, and the connecting cover 25 is located on one side of the outer shell 1.

[0030] A sealing ring 26 is attached and fixed to one side of the outer wall of the connecting cover 25, and the sealing ring 26 ensures the sealing between the connecting cover 25 and the outer shell 1.

[0031] A sealing gasket 28 is attached and fixed to one side of the inner wall of the connecting cover 25, and the sealing gasket 28 is in contact with the outer wall of the extrusion mold 32. The sealing gasket 28 ensures the sealing between the extrusion mold 32 and the connecting cover 25.

[0032] The inner wall of the extrusion die 32 is designed with a conical shape, which allows the extruded material to be controlled in terms of shape and size.

[0033] An electric push rod 24 is installed on one side of the outer wall of the fixing block 21, and one end of the outer wall of the electric push rod 24 is connected to the connecting cover 25.

[0034] A second motor 29 is installed on one side of the inner wall of the connecting cover 25. A drive wheel is provided on the outer wall of one end of the second motor 29. The drive wheel meshes with the gear 33, and the second motor 29 drives the extrusion die 32 to rotate in a circular motion through the drive wheel and the gear 33.

[0035] A scraper 27 is installed on one side of the inner wall of the connecting cover 25. The scraper 27 is located inside the extrusion mold 32. The scraper 27 can clean the material on the inner wall of the extrusion mold 32. The electric push rod 24 pulls the connecting cover 25 to move horizontally, so that the connecting cover 25 is disengaged from the outer shell 1. The material inside the extrusion mold 32 flows and slides down through the gap between the outer shell 1 and the connecting cover 25. The operator manually picks up a collection basin to collect the sliding material. The second motor 29 drives the extrusion mold 32 to rotate through the gear 33, so that the scraper 27 scrapes and cleans the residual material on the inner wall of the extrusion mold 32, reducing the amount of residual material on the inner wall of the extrusion mold 32 and avoiding residual material contamination of the equipment. After that, the operator only needs to clean the different extrusion molds 32. The first motor 2 drives the fixing block 21 and the connecting cover 25 to rotate in a circle, thereby adjusting the position of the two extrusion molds 32 to ensure that the shape and size of the extrusion molds 32 meet the requirements.

[0036] Example 2: A plastic extruder extrusion head includes a housing 1, a first motor 2, a connecting cover 25, and a support ring 3. The first motor 2 is installed on one side of the upper outer wall of the housing 1. A fixing block 21 is provided on the outer wall of one end of the first motor 2. Slide grooves 22 are provided on both the upper and lower outer walls of the fixing block 21. A slider 23 is slidably installed inside the slide groove 22. The connecting cover 25 is installed on one side of the outer wall of the slide groove 22 through the slider 23. A support ring 3 is installed on one side of the inner wall of the connecting cover 25. A bearing 31 is installed on the inner wall of the support ring 3. An extrusion die 32 is rotatably installed inside the bearing 31. A gear 33 is installed on one side of the outer wall of the extrusion die 32.

[0037] A hopper 14 is provided on one side of the upper outer wall of the outer shell 1. The hopper 14 is used to store raw materials, and the raw materials enter the interior of the outer shell 1 through the hopper 14.

[0038] The outer casing 1 is equipped with a screw 13, which is driven to rotate by an external motor, thereby pushing the raw materials inside the outer casing 1 to move.

[0039] A second heating device 12 is provided on one side of the inner wall of the outer shell 1. As is well known to those skilled in the art, the film production apparatus of this utility model also needs to provide a first heating device 11, a second heating device 12, a first motor 2, a second motor 29 and an electric push rod 24 to enable them to work normally. As is well known to those skilled in the art, the provision of the first heating device 11, the second heating device 12, the first motor 2, the second motor 29 and the electric push rod 24 is commonplace and belongs to conventional means or common knowledge. It will not be described in detail here. Those skilled in the art can make any selection according to their needs or convenience. The second heating device 12 preheats the raw materials inside the outer shell 1.

[0040] A first heating device 11 is provided on the inner wall of the outer shell 1 on the side opposite to the second heating device 12. The first heating device 11 completely heats the raw material inside the outer shell 1, causing the raw material inside the outer shell 1 to melt. The material enters the inner shell 1 through the hopper 14 and is heated by the first heating device 11 and the second heating device 12. Then it is pushed by the screw 13 to the inside of the extrusion die 32 for extrusion molding.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A plastic extruder extrusion head, comprising a housing (1), a first motor (2), a connecting cover (25), and a support ring (3), characterized in that: A first motor (2) is installed on one side of the upper outer wall of the outer shell (1). A fixing block (21) is provided on the outer wall of one end of the first motor (2). Slide grooves (22) are provided on both the upper and lower outer walls of the fixing block (21). A slider (23) is slidably installed inside the slide groove (22). A connecting cover (25) is installed through the outer wall of one end of the slide groove (22). A support ring (3) is installed on one side of the inner wall of the connecting cover (25). A bearing (31) is installed on the inner wall of the support ring (3). An extrusion mold (32) is rotatably installed inside the bearing (31). A gear (33) is installed on one side of the outer wall of the extrusion mold (32).

2. The extrusion head of the plastic extruder according to claim 1, characterized in that: A hopper (14) is provided on one side of the upper outer wall of the outer shell (1). The hopper (14) is used to store raw materials, and the raw materials enter the interior of the outer shell (1) through the hopper (14). The shell (1) is equipped with a screw (13), which is driven to rotate by an external motor, thereby pushing the raw materials inside the shell (1) to move.

3. The extrusion head of the plastic extruder according to claim 1, characterized in that: A second heating device (12) is provided on one side of the inner wall of the outer shell (1), and the second heating device (12) preheats the raw materials inside the outer shell (1); The inner wall of the outer shell (1) facing away from the second heating device (12) is provided with a first heating device (11). The first heating device (11) completely heats the raw materials inside the outer shell (1) so that the raw materials inside the outer shell (1) melt.

4. The extrusion head of the plastic extruder according to claim 1, characterized in that: The fixing block (21) is driven to rotate by the first motor (2), which can drive the connecting cover (25) to rotate in a circle, thereby changing the usage position of the connecting cover (25); The outer wall dimensions of the connecting cover (25) are consistent with the outer wall dimensions of the outer shell (1), and the connecting cover (25) is located on one side of the outer shell (1).

5. The extrusion head of a plastic extruder according to claim 1, characterized in that: A sealing ring (26) is fixedly attached to one side of the outer wall of the connecting cover (25), and the sealing ring (26) ensures the sealing between the connecting cover (25) and the outer shell (1).

6. The extrusion head of the plastic extruder according to claim 1, characterized in that: A sealing gasket (28) is attached and fixed to one side of the inner wall of the connecting cover (25), and the sealing gasket (28) is in contact with the outer wall of the extrusion mold (32). The sealing gasket (28) ensures the sealing between the extrusion mold (32) and the connecting cover (25).

7. The extrusion head for a plastic extruder according to claim 1, characterized in that: The inner wall of the extrusion die (32) is designed with a conical shape, and the extrusion die (32) can control the shape and size of the extruded material.

8. The extrusion head of the plastic extruder according to claim 1, characterized in that: An electric push rod (24) is installed on one side of the outer wall of the fixing block (21), and one end of the outer wall of the electric push rod (24) is connected to the connecting cover (25).

9. The extrusion head of a plastic extruder according to claim 1, characterized in that: A second motor (29) is installed on one side of the inner wall of the connecting cover (25). A drive wheel is provided on the outer wall of one end of the second motor (29). The drive wheel meshes with the gear (33), and the second motor (29) drives the extrusion mold (32) to rotate circumferentially through the drive wheel and the gear (33).

10. The extrusion head of a plastic extruder according to claim 1, characterized in that: A scraper (27) is installed on one side of the inner wall of the connecting cover (25). The scraper (27) is located inside the extrusion mold (32) and can clean the material on the inner wall of the extrusion mold (32).

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