Multi-layer co-extrusion die with automatic alignment function

Abstract

The utility model relates to the field of multi-layer co-extrusion, and discloses a multi-layer co-extrusion die with an automatic alignment function, which comprises a supporting base, a power assembly is arranged on the inner wall of the top end of the supporting base, a semicircular block is arranged at the top end of the power assembly, a half gear is fixedly connected to the top end of the semicircular block, and the left side of the semicircular block is in contact with a limiting plate. A rotating shaft is fixedly connected to the interior of the limiting plate, a rotating gear is fixedly connected to the periphery of the rotating shaft, a rotating plate is fixedly connected to the periphery of the rotating shaft, and a connecting frame is fixedly connected to the top end of the rotating plate. According to the utility model, the half gear, the semicircular block, the limiting plate and other mechanisms are arranged, and the rotating motor is started, so that the rotating plate can intermittently rotate by 180 degrees, and the molds on the left side and the right side are subjected to transposition and alternate blow molding, so that a visual positioning system is not needed, the positioning is conveniently completed, the cost is lower, and the blow molding machine is suitable for the development of small and medium-sized enterprises.

Description

Technical Field

[0001] This utility model relates to the field of multilayer co-extrusion, and in particular to a multilayer co-extrusion die with automatic alignment function. Background Technology

[0002] Polypropylene (PP) is a semi-crystalline thermoplastic polymerized from propylene monomers. It is lightweight, transparent, non-toxic, odorless, chemically stable, and has excellent heat resistance. It is easy to process and mold, and can be made into various products such as fibers, films, injection molded parts, and pipes through extrusion, blow molding, injection molding, and other methods.

[0003] Multilayer co-extrusion is a plastic processing technology that involves simultaneously extruding two or more different plastic materials and combining them in a co-extrusion die to form a multilayer plastic product, thereby improving the strength of the material. In order to produce high-strength polypropylene cups, a multilayer co-extrusion die with automatic alignment function is required.

[0004] Current multilayer co-extrusion dies work by extruding the multilayer co-extruded film through the die head, then closing the die and inflating it to complete blow molding. An electric telescopic rod is then used to push the die to the other side to remove the finished polypropylene cup. However, in practical use, aligning the die and extrusion die head using the electric telescopic rod requires a high-precision vision positioning system and software programming, which is costly and places certain demands on the user, making it unaffordable for small and medium-sized enterprises. Therefore, a multilayer co-extrusion die with automatic alignment function is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-layer co-extrusion mold with automatic alignment function, which aims to improve the problem of high cost caused by the need for high-precision vision positioning system and software programming in the prior art.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a multi-layer co-extrusion mold with automatic alignment function, comprising a support base, a power component provided on the inner wall of the top of the support base, a semi-circular block provided on the top of the power component, a half gear fixedly connected to the top of the semi-circular block, a limit plate contacting the left side of the semi-circular block, a rotating shaft fixedly connected inside the limit plate, a rotating gear fixedly connected to the outer circumference of the rotating shaft, a rotating plate fixedly connected to the outer circumference of the rotating shaft, a connecting frame fixedly connected to the top of the rotating plate, a telescopic cylinder fixedly connected to the inner side of the connecting frame, a product mold fixedly connected to the telescopic end of the inner side of the telescopic cylinder, and a slide rail slidably connected to the bottom of the product mold.

[0007] As a further description of the above technical solution:

[0008] An inflation head is fixedly connected inside the slide rail. A sliding tube is slidably connected to the outer periphery of the inflation head. A connector is fixedly connected to the bottom end of the sliding tube. A limit sleeve is elastically connected to the top end of the sliding tube through a limit spring. A connecting air pipe is in contact with the outer periphery of the connector. An air compressor is provided at the bottom end of the connecting air pipe. A multi-layer co-extruder is provided on the back of the support base. An extrusion head is provided on the inner wall of the top end of the multi-layer co-extruder.

[0009] As a further description of the above technical solution:

[0010] The power assembly includes a motor bracket, the top of which is fixedly connected to the inner wall of the top of the support base. A rotating motor is fixedly connected to the left side of the motor bracket, and the bottom of the semi-circular block is fixedly connected to the output shaft at the top of the rotating motor.

[0011] As a further description of the above technical solution:

[0012] The left half gear meshes with the right side of the rotating gear.

[0013] As a further description of the above technical solution:

[0014] The bottom surface of the rotating plate is in contact with the top surface of the support base, and the bottom end of the slide rail is fixedly connected to the top end of the rotating plate.

[0015] As a further description of the above technical solution:

[0016] The outer periphery of the inflation head contacts the inner side of the product mold, and the outer periphery of the inflation head is fixedly connected to the inside of the limiting sleeve.

[0017] As a further description of the above technical solution:

[0018] One end of the limiting spring is fixedly connected to the top of the sliding tube, and the other end of the limiting spring is fixedly connected to the inner wall of the top of the limiting sleeve. The outer periphery of the sliding tube is slidably connected to the inside of the limiting sleeve.

[0019] As a further description of the above technical solution:

[0020] The outer periphery of the limiting sleeve is fixedly connected to the inside of the rotating plate, the outer periphery of the connecting air pipe is fixedly connected to the inside of the support base, and the top of the air compressor is set on the inner wall of the top of the support base.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by setting up mechanisms such as half gears, half circular blocks, and limiting plates, and turning on the rotating motor, the rotating plate can be rotated 180 degrees intermittently, thereby allowing the molds on the left and right sides to be repositioned and blow molded alternately. This eliminates the need for a vision positioning system, making positioning convenient, cost-effective, and suitable for the development of small and medium-sized enterprises.

[0023] 2. In this utility model, by setting up a sliding tube, a connector, an air inflator and other mechanisms, when the rotating plate rotates 180 degrees, the limit spring pushes the connector to connect with the connecting air tube, thereby turning on the air compressor to conveniently blow mold the inside of the mold, which is quite convenient to use. Attached Figure Description

[0024] Figure 1 This is a front view of a multi-layer co-extrusion die with automatic alignment function proposed in this utility model.

[0025] Figure 2 This is a schematic diagram of the bottom surface of the support base of a multi-layer co-extrusion mold with automatic alignment function proposed in this utility model;

[0026] Figure 3 This is a schematic cross-sectional view of the left side of the support base of a multi-layer co-extrusion mold with automatic alignment function proposed in this utility model.

[0027] Figure 4 This utility model proposes a multi-layer co-extrusion die with automatic alignment function. Figure 3 Enlarged diagram of point A.

[0028] Legend:

[0029] 1. Support base; 2. Motor bracket; 3. Rotating motor; 4. Semicircular block; 5. Half gear; 6. Limiting plate; 7. Rotating shaft; 8. Rotating gear; 9. Rotating plate; 10. Connecting frame; 11. Telescopic cylinder; 12. Product mold; 13. Slide rail; 14. Inflator head; 15. Sliding tube; 16. Connecting head; 17. Limiting spring; 18. Limiting sleeve; 19. Connecting air pipe; 20. Air compressor; 21. Multi-layer co-extruder; 22. Extrusion head. Detailed Implementation

[0030] 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.

[0031] Reference Figure 1 - Figure 2 This utility model provides an embodiment of a multi-layer co-extrusion mold with automatic alignment function, including a support base 1 for fixing and supporting equipment. A power component is provided on the inner wall of the top of the support base 1 to provide rotational power. The power component includes a motor bracket 2 for fixing and supporting, the top of which is fixedly connected to the inner wall of the top of the support base 1. A rotary motor 3 for providing rotational power is fixedly connected to the left side of the motor bracket 2. A semi-circular block 4 is provided on the top of the power component, and the bottom of the semi-circular block 4 is fixedly connected to the output shaft at the top of the rotary motor 3. When the rotary motor 3 is turned on, the rotary motor 3 will drive the semi-circular block 4. The semicircular block 4 is rotated. A semi-gear 5 is fixedly connected to the top of the semicircular block 4. The semi-gear 5 has teeth only at an angle of 180 degrees. The left side of the semicircular block 4 contacts a limiting plate 6. The left and right sides of the limiting plate 6 are provided with shapes that match the arc surface of the protrusion of the semicircular block 4. A rotating shaft 7 is fixedly connected inside the limiting plate 6. When the limiting plate 6 contacts the protrusion of the semicircular block 4, the rotating shaft 7 cannot rotate. A rotating gear 8 is fixedly connected to the outer circumference of the rotating shaft 7. The left side of the semi-gear 5 meshes with the right side of the rotating gear 8. For every revolution of the semi-gear 5, the rotating gear 8 rotates 180 degrees. A rotating plate 9, which provides fixed support, is fixedly connected to the outer circumference of the rotating shaft 7.

[0032] Reference Figure 2 - Figure 3 The bottom surface of the rotating plate 9 is in contact with the top surface of the support base 1. The top of the rotating plate 9 is fixedly connected to a connecting frame 10, which serves as a fixed connection. There are four sets of connecting frames 10, two sets on each side symmetrically arranged, and the two sets of connecting frames 10 on each side are symmetrically arranged front and back. A telescopic cylinder 11 is fixedly connected to the inner side of the connecting frame 10. The telescopic end of the telescopic cylinder 11 is fixedly connected to the product mold 12. When the telescopic cylinders 11 on both the front and back sides are opened at the same time, the telescopic cylinders 11 will drive the product mold 12 to close and open. The bottom of the product mold 12 is slidably connected to a slide rail 13. The slide rail 13 restricts the product mold 12 to slide back and forth only along the outer wall of the slide rail 13. The bottom end of the slide rail 13 is fixedly connected to the top of the rotating plate 9.

[0033] Reference Figure 1 and Figure 4An inflation head 14 is fixedly connected inside the slide rail 13 to facilitate inflation of the multilayer extruded film. The outer periphery of the inflation head 14 contacts the inner side of the product mold 12. When the product mold 12 is closed, it inflates the interior. A sliding tube 15 is slidably connected to the outer periphery of the inflation head 14, allowing it to slide up and down along the outer periphery. A connector 16 is fixedly connected to the bottom end of the sliding tube 15. The outer periphery of the connector 16 is sloped, allowing it to partially convert lateral force into upward force. A limiting sleeve 18 is elastically connected to the top end of the sliding tube 15 via a limiting spring 17. When the sliding tube 15 is not under force, the limiting spring 17 pushes the limiting sleeve 18 downward. One end of the limiting spring 17 is fixedly connected to the top end of the sliding tube 15, and the other end is fixedly connected to the inner wall of the top end of the limiting sleeve 18. The outer periphery of the sliding tube 15 slides inside the limiting sleeve 18. The limiting sleeve 18 restricts the sliding tube 15 to slide only up and down along the inner wall of the limiting sleeve 18. The outer periphery of the inflation head 14 is fixedly connected to the inside of the limiting sleeve 18. The outer periphery of the limiting sleeve 18 is fixedly connected to the inside of the rotating plate 9. The outer periphery of the connector 16 contacts the connecting air pipe 19, which serves as a fixed connection. The outer periphery of the connecting air pipe 19 is fixedly connected to the inside of the support base 1. The bottom end of the connecting air pipe 19 is provided with an air compressor 20 for conveying compressed air. The top end of the air compressor 20 is provided on the inner wall of the top end of the support base 1. The back of the support base 1 is provided with a multi-layer co-extruder 21. The multi-layer co-extruder 21 can mix and extrude multiple materials with polypropylene to form a high-strength polypropylene mixed co-extruded film. After blow molding, it can form a high-strength polypropylene product. The inner wall of the top end of the multi-layer co-extruder 21 is provided with an extrusion head 22 for facilitating the extrusion of a high-strength polypropylene mixed co-extruded film.

[0034] Working principle: When it is desired to easily move the product mold 12 left and right, the rotating motor 3 is turned on. The rotating motor 3 drives the semicircular block 4 and the semi-gear 5 to rotate. When the semicircular block 4 disengages from the limiting plate 6, the semi-gear 5 begins to mesh with the rotating gear 8, driving the rotating gear 8 to rotate. When the rotating gear 8 rotates 180 degrees, the semicircular block 4 contacts the limiting plate 6, preventing the rotating gear 8 from rotating further. At this time, the rotating shaft 7 drives the rotating plate 9 to rotate 180 degrees, transporting the blow-molded product mold 12 to one side. The emptied product mold 12 is transported to below the extruder head 22, which extrudes a polypropylene multilayer film. At this time, the telescopic cylinder 11 of the left product mold 12 opens to clamp the polypropylene multilayer film for blow molding. The telescopic cylinder 11 of the right product mold 12 opens to separate the product mold 12 front and back, making it easy to remove the finished product. This eliminates the need for a vision positioning system and facilitates positioning. When you want to easily inflate the inside of the product mold 12, turn on the rotating motor 3 and the rotating plate 9 will rotate. When the rotating plate 9 rotates 180 degrees, the product mold 12 on the right side will rotate to the left side. At this time, the connector 16 will be opposite to the connecting air pipe 19 on the left side. The limit spring 17 will push the sliding tube 15 to push the connector 16 out to be opposite to the connecting air pipe 19. When the telescopic cylinder 11 of the product mold 12 on the left side opens and clamps the polypropylene multilayer film, turn on the air compressor 20 to easily perform blow molding. It is quite convenient to use.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 multi-layer co-extrusion mold with automatic alignment function, comprising a support base (1), characterized in that: The support base (1) has a power component on its top inner wall. The power component has a semi-circular block (4) on its top. A semi-gear (5) is fixedly connected to the top of the semi-circular block (4). The left side of the semi-circular block (4) contacts a limit plate (6). A rotating shaft (7) is fixedly connected inside the limit plate (6). A rotating gear (8) is fixedly connected to the outer periphery of the rotating shaft (7). A rotating plate (9) is fixedly connected to the outer periphery of the rotating shaft (7). A connecting frame (10) is fixedly connected to the top of the rotating plate (9). A telescopic cylinder (11) is fixedly connected to the inner side of the connecting frame (10). A product mold (12) is fixedly connected to the telescopic end of the telescopic cylinder (11). A slide rail (13) is slidably connected to the bottom of the product mold (12).

2. A multi-layer co-extrusion die with automatic alignment function according to claim 1, characterized in that: An inflation head (14) is fixedly connected inside the slide rail (13). A sliding tube (15) is slidably connected to the outer periphery of the inflation head (14). A connector (16) is fixedly connected to the bottom end of the sliding tube (15). A limit sleeve (18) is elastically connected to the top end of the sliding tube (15) through a limit spring (17). A connecting air pipe (19) is in contact with the outer periphery of the connector (16). An air compressor (20) is provided at the bottom end of the connecting air pipe (19). A multi-layer co-extruder (21) is provided on the back of the support base (1). An extrusion head (22) is provided on the inner wall of the top end of the multi-layer co-extruder (21).

3. A multi-layer co-extrusion die with automatic alignment function according to claim 1, characterized in that: The power assembly includes a motor bracket (2), the top of which is fixedly connected to the inner wall of the top of the support base (1), a rotating motor (3) is fixedly connected to the left side of the motor bracket (2), and the bottom of the semi-circular block (4) is fixedly connected to the output shaft at the top of the rotating motor (3).

4. A multi-layer co-extrusion die with automatic alignment function according to claim 1, characterized in that: The left side of the half gear (5) meshes with the right side of the rotating gear (8).

5. A multi-layer co-extrusion die with automatic alignment function according to claim 1, characterized in that: The bottom surface of the rotating plate (9) is in contact with the top surface of the support base (1), and the bottom end of the slide rail (13) is fixedly connected to the top end of the rotating plate (9).

6. A multi-layer co-extrusion die with automatic alignment function according to claim 2, characterized in that: The outer periphery of the inflation head (14) is in contact with the inner side of the product mold (12), and the outer periphery of the inflation head (14) is fixedly connected to the inside of the limiting sleeve (18).

7. A multi-layer co-extrusion die with automatic alignment function according to claim 2, characterized in that: One end of the limiting spring (17) is fixedly connected to the top end of the sliding tube (15), and the other end of the limiting spring (17) is fixedly connected to the inner wall of the top end of the limiting sleeve (18). The outer periphery of the sliding tube (15) is slidably connected to the inside of the limiting sleeve (18).

8. A multi-layer co-extrusion die with automatic alignment function according to claim 2, characterized in that: The outer periphery of the limiting sleeve (18) is fixedly connected to the inside of the rotating plate (9), the outer periphery of the connecting air pipe (19) is fixedly connected to the inside of the support base (1), and the top of the air compressor (20) is set on the inner wall of the top of the support base (1).

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