Three-layer co-extrusion film blowing device capable of automatically regulating spacing of limiting pieces

Abstract

A three-layer co-extrusion film blowing device capable of automatically regulating the spacing of limiting pieces. The device comprises: a rack (1), a fixed plate (2), a first connecting plate (4), a second connecting plate (5), and limiting rings (13). Sliding blocks (23) are slidably mounted on the two sides of the interior of a slide groove (21); a supporting frame (24) is mounted on the upper outer wall of each sliding block (23); a supporting plate (26) is mounted on the upper outer wall of each supporting frame (24); the first connecting plate (4) and the second connecting plate (5) are rotatably mounted on the opposite outer side walls of the two supporting plates (26), respectively; first connecting rods (41) distributed in a circular array are mounted on the outer wall of the first connecting plate (4); second connecting rods (51) distributed in a circular array are mounted on the outer wall of the second connecting plate (5); and a limiting rod (42) is mounted on the outer walls of the first connecting rods (41). By arranging the first connecting rods (41), the second connecting rods (51), and a screw rod (22), the effect of cleaning a transition roller (12) is achieved, the thoroughness of cleaning the transition roller (12) is guaranteed, and the cleanliness of the outer wall of the transition roller (12) is guaranteed, thereby avoiding contamination to a thin film, and guaranteeing the production quality of the thin film.

Description

A three-layer co-extrusion film blowing device with self-adjustable spacing between limiters Technical Field

[0001] The present invention relates to the technical field of film blowing machines, in particular to a three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between limiting parts. Background Art

[0002] The film blowing machine heats and melts plastic particles and then blows them into thin films. There are many types of film blowing machines, including PE, POF, PVC, etc. The three-layer co-extrusion film blowing machine is a device that melts plastic particles and processes them into plastic films through film blowing equipment.

[0003] Patent announcement number CN114536729A discloses a three-layer co-extrusion blown film device with self-adjustable spacing of limit members, comprising a base, the top of the base is fixedly connected to a connecting frame, the interior of the connecting block is rotatably connected to a first roller, a cutting frame is provided on the left side of the connecting frame, the top of the cutting frame is fixedly connected to a limiting component, and a cutting device is fixedly connected to the inner side wall of the cutting frame. The present invention relates to the technical field of three-layer co-extrusion blown film machines; the three-layer co-extrusion blown film machine with self-adjustable spacing of limit members adjusts the position of the cutting knife according to the thickness of the film body, and the position of the cutting knife is adjusted by twisting the adjusting rod. When the cutting knife cuts the film body, the cutting surface is smooth and no burrs appear. In actual use, errors may occur. At this time, the position of the cutting knife can be fine-tuned by toggling the telescopic rod, so that the device can ensure that the cutting surface of the film body is neat.

[0004] Although the prior art CN114536729A has many benefits during use, it still has the following problems: it lacks a cleaning structure for the transition roller. During the use of the transition roller, dust and foreign matter in the air easily adhere to the outer wall of the transition roller. When the film moves on the outer wall of the transition roller, the dust and foreign matter will contaminate the film, affecting the production quality of the film. Technical issues

[0005] The object of the present invention is to provide a three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between limiters, so as to solve the problems raised in the above-mentioned background technology. Technical Solutions

[0006] The cam is provided with a first end for receiving the first link, a second end for receiving the first link and a second end for receiving the first link, and a limit ring is provided on the upper end of the cam.

[0007] When using a three-layer co-extrusion film blowing device in the present technical solution that can self-regulate the spacing between the limit parts, the screw body drives the limit ring to move relative to each other, thereby adjusting the spacing between the limit rings, and can control the position of the film on the outer wall of the transition roller, and the staff manually turns the handle to drive the first connecting plate and the second connecting plate to move relative to each other through the screw and the slider, thereby adjusting the spacing between the support plates, so that the brush can be unfolded, ensuring that the cleaning range of the brush can be adjusted, ensuring that the equipment can be suitable for transition rollers of different sizes, and improving the applicability of the equipment, the motor body drives the first connecting plate to rotate in a circle, and through the limit rod and the limit block, ensures that the second connecting rod rotates with the first connecting rod, ensuring that the brushes on both sides rotate at the same speed, thereby causing dust and foreign matter on the outer wall of the transition roller to fall off.

[0008] Preferably, a screw body is provided on the outer wall of one side of the fixed frame, and limiting rings are provided on the outer walls on both sides of the screw body. The limiting rings are located outside the transition roller, and the screw body drives the limiting rings to move relative to each other, thereby adjusting the spacing between the limiting rings.

[0009] Preferably, bolts distributed in a rectangular array are provided inside the fixing plate, and the bolts are connected to the frame to ensure the position stability of the fixing plate at the upper end of the frame.

[0010] Preferably, a screw is rotatably mounted on one side of the inner wall of the slide, a screw hole is provided inside the slider, and the screw is engaged with the screw hole, and the threaded openings on both sides of the screw are in opposite directions;

[0011] The screw rod passes through the outer wall of one end of the fixed plate and is provided with a handle. The staff drives the screw rod to rotate in a circle through the handle, so that the sliders move relative to each other through the screw rod and the screw hole, thereby adjusting the spacing between the sliders.

[0012] Preferably, the first connecting plate passes through the outer wall of one end of the support plate and is provided with a motor body, the motor body is connected to the outer wall of the support plate, and the motor body drives the first connecting plate to rotate in a circular motion.

[0013] Preferably, the number of the first connecting rods and the number of the second connecting rods are both four, and the first connecting rods and the second connecting rods are arranged in a cross shape.

[0014] Preferably, brushes are installed on the outer walls of the first connecting rod and the second connecting rod, and the brushes are in contact with the outer wall of the transition roller. The brushes can clean the outer wall of the transition roller to ensure the cleanliness of the outer wall of the transition roller.

[0015] Preferably, a limiting hole is provided inside the second connecting rod, the limiting rod is designed in a circular ring shape, and the limiting rod is located inside the limiting hole.

[0016] Preferably, the outer wall of the limiting rod is installed with limiting blocks distributed in a circular array, and the limiting blocks are located on the outer wall of the second connecting rod, thereby fixing the relative position between the first connecting rod and the second connecting rod.

[0017] Preferably, the transition roller is used to change the moving direction of the film, and the film moves on the outer wall of the transition roller, and the position of the film on the outer wall of the transition roller is controlled by a limiting ring. Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention achieves the effect of cleaning the transition roller by setting a first connecting rod, a second connecting rod and a screw, and the screw body drives the limit ring to move relative to each other, thereby adjusting the spacing between the limit rings, and can control the position of the film on the outer wall of the transition roller, and the staff manually turns the handle to drive the first connecting plate and the second connecting plate to move relative to each other through the screw and the slider, thereby adjusting the spacing between the support plates, so that the brush can be unfolded, ensuring that the cleaning range of the brush can be adjusted, ensuring that the equipment can be suitable for transition rollers of different sizes, and improving the applicability of the equipment, the motor body drives the first connecting plate to rotate in a circle, and through the limit rod and the limit block, ensures that the second connecting rod rotates with the first connecting rod, and ensures that the brushes on both sides rotate at the same speed, so that the dust and foreign matter on the outer wall of the transition roller fall off, ensuring the cleaning integrity of the transition roller, ensuring the cleanliness of the outer wall of the transition roller, avoiding pollution to the film, and ensuring the production quality of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic cross-sectional view of a frame structure of the present invention;

[0020] FIG2 is a side sectional view of the frame structure of the present invention;

[0021] FIG3 is an enlarged schematic diagram of the fixed plate structure of the present invention;

[0022] FIG4 is a side sectional view of the fixing plate structure of the present invention;

[0023] FIG5 is a partially enlarged schematic diagram of the first connecting plate structure in FIG4 of the present invention.

[0024] In the figure: 1. Frame; 11. Fixed frame; 12. Transition roller; 13. Limiting ring; 14. Screw body; 2. Fixed plate; 21. Slide groove; 22. Screw; 23. Slider; 24. Support frame; 25. Bolt; 26. Support plate; 3. Motor body; 4. First connecting plate; 41. First connecting rod; 42. Limiting rod; 43. Limiting block; 5. Second connecting plate; 51. Second connecting rod; 52. Limiting hole; 53. Brush. Modes for Carrying Out the Invention

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Please refer to Figures 1 to 5, which show two embodiments of the present invention:

[0027] Embodiment 1: A three-layer co-extrusion blown film device with self-adjustable spacing between limit parts includes a frame 1, a fixed plate 2, a first connecting plate 4, a second connecting plate 5 and a limiting ring 13. Fixed frames 11 are installed on both sides of the outer wall of the upper end of the frame 1, and an over roller 12 is rotatably installed inside the fixed frame 11. A fixed plate 2 is provided on one side of the outer wall of the upper end of the frame 1, and a slide groove 21 is provided on one side of the outer wall of the upper end of the fixed plate 2. Sliders 23 are slidably installed on both sides of the slide groove 21, and a support frame 24 is installed on one side of the outer wall of the upper end of the slider 23. A support plate 26 is installed on one side of the outer wall of the upper end of the support frame 24, and the first connecting plate 4 and the second connecting plate 5 are rotatably installed on the outer walls of the opposite sides of the two support plates 26. The outer wall of the first connecting plate 4 is installed with a first connecting rod 41 distributed in a circular array, the outer wall of the second connecting plate 5 is installed with a second connecting rod 51 distributed in a circular array, and the outer wall of the first connecting rod 41 is installed with a limiting rod 42.

[0028] A screw body 14 is provided on the outer wall of one side of the fixed frame 11, and limit rings 13 are provided on the outer walls on both sides of the screw body 14. The limit rings 13 are located on the outside of the transition roller 12. The screw body 14 drives the limit rings 13 to move relative to each other, thereby adjusting the distance between the limit rings 13.

[0029] The transition roller 12 is used to change the moving direction of the film, and the film moves on the outer wall of the transition roller 12. The position of the film on the outer wall of the transition roller 12 is controlled by the limit ring 13. The screw body 14 drives the limit ring 13 to move relative to each other, thereby adjusting the spacing between the limit rings 13, and can control the position of the film on the outer wall of the transition roller 12.

[0030] Embodiment 2: A three-layer co-extrusion blown film device with self-adjustable spacing between limit parts includes a frame 1, a fixed plate 2, a first connecting plate 4, a second connecting plate 5 and a limiting ring 13. Fixed frames 11 are installed on both sides of the outer wall of the upper end of the frame 1, and an over roller 12 is rotatably installed inside the fixed frame 11. A fixed plate 2 is provided on one side of the outer wall of the upper end of the frame 1, and a slide groove 21 is provided on one side of the outer wall of the upper end of the fixed plate 2. Sliders 23 are slidably installed on both sides of the inner part of the slide groove 21, and a support frame 24 is installed on one side of the outer wall of the upper end of the slider 23. A support plate 26 is installed on one side of the outer wall of the upper end of the support frame 24, and the first connecting plate 4 and the second connecting plate 5 are rotatably installed on the outer walls of the opposite sides of the two support plates 26. The outer wall of the first connecting plate 4 is installed with a first connecting rod 41 distributed in a circular array, the outer wall of the second connecting plate 5 is installed with a second connecting rod 51 distributed in a circular array, and the outer wall of the first connecting rod 41 is installed with a limiting rod 42.

[0031] Bolts 25 distributed in a rectangular array are provided inside the fixing plate 2 , and the bolts 25 are connected to the frame 1 to ensure the position stability of the fixing plate 2 at the upper end of the frame 1 .

[0032] A screw rod 22 is rotatably mounted on one side of the inner wall of the slide groove 21. A screw hole is opened inside the slider 23, and the screw rod 22 is engaged with the screw hole. The threaded openings on both sides of the screw rod 22 are in opposite directions.

[0033] The screw 22 passes through the outer wall of one end of the fixed plate 2 and is installed with a handle. The staff drives the screw 22 to rotate in a circle through the handle, so that the sliders 23 move relative to each other through the screw 22 and the screw hole, thereby adjusting the spacing between the sliders 23.

[0034] The first connecting plate 4 passes through the outer wall of one end of the support plate 26 and is provided with a motor body 3. The film blowing device of the present invention also needs to provide a motor body 3 to enable it to work normally. As is well known to those skilled in the art, the provision of the motor body 3 is commonplace and belongs to conventional means or common knowledge. It will not be repeated here. Those skilled in the art can make any selection according to their needs or convenience. The motor body 3 is connected to the outer wall of the support plate 26, and the motor body 3 drives the first connecting plate 4 to rotate in a circle.

[0035] The number of the first connecting rods 41 and the number of the second connecting rods 51 are both four, and the first connecting rods 41 and the second connecting rods 51 are arranged in a cross shape.

[0036] Brushes 53 are installed on the outer walls of the first connecting rod 41 and the second connecting rod 51. The brushes 53 are in contact with the outer wall of the transition roller 12. The brushes 53 can clean the outer wall of the transition roller 12 to ensure the cleanliness of the outer wall of the transition roller 12.

[0037] A limiting hole 52 is provided inside the second connecting rod 51 . The limiting rod 42 is designed in a circular ring shape. The limiting rod 42 is located inside the limiting hole 52 . The limiting hole 52 and the limiting rod 42 ensure the connection stability between the first connecting rod 41 and the second connecting rod 51 during the movement.

[0038] The outer wall of the limit rod 42 is installed with a limit block 43 distributed in a circular array. The limit block 43 is located on the outer wall of the second connecting rod 51, thereby fixing the relative position between the first connecting rod 41 and the second connecting rod 51. The staff manually turns the handle to drive the first connecting plate 4 and the second connecting plate 5 to move relative to each other through the screw 22 and the slider 23, thereby adjusting the distance between the support plates 26 and expanding the brush 53 to ensure that the cleaning range of the brush 53 can be adjusted, ensuring that the equipment can be suitable for transition rollers 12 of different sizes, improving the applicability of the equipment, the motor body 3 drives the first connecting plate 4 to rotate in a circle, and through the limit rod 42 and the limit block 43, ensures that the second connecting rod 51 rotates following the first connecting rod 41, ensuring that the brushes 53 on both sides rotate at the same speed, thereby causing dust and foreign matter on the outer wall of the transition roller 12 to fall off, ensuring the cleaning integrity of the transition roller 12, ensuring the cleanliness of the outer wall of the transition roller 12, avoiding pollution to the film, and ensuring the production quality of the film.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between limiting members, comprising a frame (1), a fixing plate (2), a first connecting plate (4), a second connecting plate (5) and a limiting ring (13), characterized in that: A fixing frame (11) is installed on both sides of the outer wall of the upper end of the frame (1), and a transition roller (12) is rotatably installed inside the fixing frame (11). A fixing plate (2) is provided on one side of the outer wall of the upper end of the frame (1), and a slide groove (21) is provided on one side of the outer wall of the upper end of the fixing plate (2). Slide blocks (23) are slidably installed on both sides of the slide groove (21). A support frame (24) is installed on one side of the outer wall of the upper end of the slide block (23), and a support plate (26) is installed on one side of the outer wall of the upper end of the support frame (24). A first connecting plate (4) and a second connecting plate (5) are rotatably installed on the outer walls of opposite sides of the two support plates (26), respectively. A first connecting rod (41) distributed in a circular array is installed on the outer wall of the first connecting plate (4), and a second connecting rod (51) distributed in a circular array is installed on the outer wall of the second connecting plate (5). A limit rod (42) is installed on the outer wall of the first connecting rod (41).

2. A three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between the limiters according to claim 1, characterized in that: A lead screw body (14) is disposed on an outer wall of one side of the fixed frame (11), and limit rings (13) are disposed on outer walls of both sides of the lead screw body (14). The limit rings (13) are located outside the transition roller (12), and the lead screw body (14) drives the limit rings (13) to move relative to each other, thereby adjusting the spacing between the limit rings (13).

3. The three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between the limiters according to claim 1 is characterized in that: Bolts (25) distributed in a rectangular array are arranged inside the fixing plate (2), and the bolts (25) are connected to the frame (1) to ensure the position stability of the fixing plate (2) at the upper end of the frame (1).

4. The three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between the limiters according to claim 1 is characterized in that: A screw rod (22) is rotatably mounted on one side of the inner wall of the slide groove (21), a screw hole is provided inside the slider (23), and the screw rod (22) is meshed inside the screw hole, and the threaded openings on both sides of the screw rod (22) are in opposite directions; The screw rod (22) passes through the outer wall of one end of the fixing plate (2) and is provided with a handle, which drives the screw rod (22) to rotate in a circle, so that the sliders (23) move relative to each other through the screw rod (22) and the screw hole, thereby adjusting the spacing between the sliders (23).

5. The three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between the limiters according to claim 1 is characterized in that: The first connecting plate (4) passes through the outer wall of one end of the support plate (26), and a motor body (3) is provided thereon. The motor body (3) is connected to the outer wall of the support plate (26), and the motor body (3) drives the first connecting plate (4) to rotate in a circular motion.

6. The three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between the limiters according to claim 1, characterized in that: The number of the first connecting rods (41) and the number of the second connecting rods (51) are both four, and the first connecting rods (41) and the second connecting rods (51) are arranged in a cross shape.

7. The three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between the limiters according to claim 1 is characterized in that: The outer walls of the first connecting rod (41) and the second connecting rod (51) are both installed with brushes (53), and the brushes (53) are in contact with the outer wall of the transition roller (12). The brushes (53) can clean the outer wall of the transition roller (12), thereby ensuring the cleanliness of the outer wall of the transition roller (12).

8. The three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between the limiters according to claim 1, characterized in that: A limiting hole (52) is provided inside the second connecting rod (51), the limiting rod (42) is designed in a circular ring shape, and the limiting rod (42) is located inside the limiting hole (52).

9. The three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between the limiters according to claim 1, characterized in that: The outer wall of the limiting rod (42) is provided with limiting blocks (43) distributed in a circular array, and the limiting blocks (43) are located on the outer wall of the second connecting rod (51), thereby fixing the relative position between the first connecting rod (41) and the second connecting rod (51).

10. The three-layer co-extrusion film blowing device capable of automatically adjusting the spacing between the limiters according to claim 1, characterized in that: The transition roller (12) is used to change the moving direction of the film, and the film moves on the outer wall of the transition roller (12), and the position of the film on the outer wall of the transition roller (12) is controlled by a limiting ring (13).

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