Three-layer co-extrusion film blowing device capable of self-regulating spacing of limiting members

Abstract

The application relates to the technical field of film blowing machines, in particular to a three-layer co-extrusion film blowing device capable of automatically regulating the spacing of limiting parts. The technical scheme comprises a rack, a fixed plate, a first connecting plate, a second connecting plate and a limiting ring, sliding blocks are slidably arranged on the inner sides of the sliding grooves, support frames are arranged on one side of the outer walls of the upper ends of the sliding blocks, support plates are arranged on one side of the outer walls of the upper ends of the support frames, the first connecting plate and the second connecting plate are rotatably arranged on the outer walls of the support plates, the first connecting plate is provided with circularly arranged first connecting rods, the second connecting plate is provided with circularly arranged second connecting rods, and limiting rods are arranged on the outer walls of the first connecting rods. By arranging the first connecting rods, the second connecting rods and the screw rods, the over-roller can be cleaned, the cleaning integrity of the over-roller is ensured, the cleanliness of the outer wall of the over-roller is ensured, the film is prevented from being polluted, and the production quality of the film is ensured.

Description

Technical Field

[0001] This invention relates to the field of blown film machine technology, specifically to a three-layer co-extrusion blown film device with adjustable spacing between limiting components. Background Technology

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

[0003] Patent publication number CN114536729A discloses a three-layer co-extrusion blown film device with adjustable spacing between limiting components. The device includes a base, a connecting frame fixedly connected to the top of the base, a first rotating roller rotatably connected inside the connecting block, a cutting frame on the left side of the connecting frame, a limiting component fixedly connected to the top of the cutting frame, and a cutting device fixedly connected to the inner wall of the cutting frame. This invention relates to the field of three-layer co-extrusion blown film technology. This three-layer co-extrusion blown film machine with adjustable spacing between limiting components adjusts the position of the cutting blades according to the thickness of the film body. Twisting the adjusting rod adjusts the position of the cutting blades to ensure a smooth cut surface without burrs when cutting the film body. In actual use, errors may occur; in this case, the position of the cutting blades can be finely adjusted by moving the telescopic rod, ensuring a neat cut surface for the film body.

[0004] While existing technology CN114536729A offers many advantages during use, it still suffers from the following problems: it lacks a cleaning structure for the transition roller. During use, dust and foreign objects in the air easily adhere to the outer wall of the transition roller. When the film moves along the outer wall of the transition roller, the dust and foreign objects can contaminate the film, affecting the production quality of the film. Summary of the Invention

[0005] The purpose of this invention is to provide a three-layer co-extrusion blown film device with adjustable spacing between limiting members, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a three-layer co-extrusion blown film device with self-adjustable spacing of limiting components, comprising a frame, a fixed plate, a first connecting plate, a second connecting plate, and a limiting ring. Fixed frames are installed on both sides of the upper outer wall of the frame. Transition rollers are rotatably installed inside the fixed frames. A fixed plate is provided on one side of the upper outer wall of the frame. A groove is formed on one side of the upper outer wall of the fixed plate. Slider blocks are slidably installed on both sides inside the groove. A support frame is installed on one side of the upper outer wall of the slider. A support plate is installed on one side of the upper outer wall of the support frame. A first connecting plate and a second connecting plate are rotatably installed on opposite outer walls of the two support plates. A first connecting rod distributed in a circular array is installed on the outer wall of the first connecting plate. A second connecting rod distributed in a circular array is installed on the outer wall of the second connecting plate. A limiting rod is installed on the outer wall of the first connecting rod.

[0007] When using the three-layer co-extrusion blown film device with adjustable spacing of limiting components as described in this technical solution, the lead screw body drives the limiting rings to move relative to each other, thereby adjusting the spacing between the limiting rings and controlling the position of the film on the outer wall of the transition roller. The operator manually rotates the handle, which, through the screw and slider, drives the first connecting plate and the second connecting plate to move relative to each other, thereby adjusting the spacing between the support plates, allowing the brushes to unfold, ensuring that the cleaning range of the brushes is adjustable, and ensuring that the equipment can be used with transition rollers of different sizes, thus improving the applicability of the equipment. The motor body drives the first connecting plate to rotate circumferentially, and the limiting rod and limiting block ensure 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 objects on the outer wall of the transition roller to fall off.

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

[0009] Preferably, the fixing plate is provided with bolts arranged in a rectangular array inside, and the bolts are connected to the frame to ensure the positional 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 groove, a screw hole is opened inside the slider, and the screw meshes with the inside of the screw hole, and the thread openings on both sides of the screw are in opposite directions;

[0011] The screw has a handle installed on the outer wall of one end of the fixed plate. The operator can rotate the screw by using the handle, causing the slider to move relative to the screw and the screw hole, thereby adjusting the distance between the sliders.

[0012] Preferably, the first connecting plate is provided with a motor body through one end of the outer wall of the support plate. 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 rod and the second connecting rod is four, and the first connecting rod and the second connecting rod are distributed in a cross pattern.

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

[0015] Preferably, a limiting hole is formed inside the second connecting rod, and the limiting rod adopts a circular shape design and is located inside the limiting hole.

[0016] Preferably, the outer wall of the limiting rod is equipped with a circular array of limiting blocks, which 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 direction of film movement, and the film moves on the outer wall of the transition roller, with the position of the film on the outer wall of the transition roller controlled by a limiting ring.

[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. The screw body drives the limiting rings to move relative to each other, thereby adjusting the distance between the limiting rings and controlling the position of the film on the outer wall of the transition roller. The operator can manually turn the handle, which drives the first connecting plate and the second connecting plate to move relative to each other through the screw and the slider, thereby adjusting the distance between the support plates, allowing the brush to unfold, ensuring that the cleaning range of the brush can be adjusted, and ensuring that the equipment can be used for transition rollers of different sizes, thus improving the applicability of the equipment. The motor body drives the first connecting plate to rotate circumferentially, and the limiting rod and the limiting block ensure 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 objects on the outer wall of the transition roller to fall off, ensuring the integrity of the cleaning of the transition roller, ensuring the cleanliness of the outer wall of the transition roller, avoiding contamination of the film, and ensuring the production quality of the film. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the frame structure of the present invention;

[0020] Figure 2 This is a side sectional view of the frame structure of the present invention;

[0021] Figure 3 This is an enlarged schematic diagram of the fixing plate structure of the present invention;

[0022] Figure 4 This is a side sectional view of the fixing plate structure of the present invention;

[0023] Figure 5 For the present invention Figure 4 A partially enlarged schematic diagram of the first connecting plate structure.

[0024] In the diagram: 1. Frame; 11. Fixed frame; 12. Transition roller; 13. Limiting ring; 14. Lead 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. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1 to 5 The present invention provides two embodiments:

[0027] Example 1: A three-layer co-extrusion blown film device with adjustable spacing of limiting components 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 upper outer wall of the frame 1. Transition rollers 12 are rotatably installed inside the fixed frames 11. A fixed plate 2 is provided on one side of the upper outer wall of the frame 1. A groove 21 is opened on one side of the upper outer wall of the fixed plate 2. Slider blocks 23 are slidably installed on both sides inside the groove 21. A support frame 24 is installed on one side of the upper outer wall of the slider 23. A support plate 26 is installed on one side of the upper outer wall of the support frame 24. The first connecting plate 4 and the second connecting plate 5 are rotatably installed on opposite sides of the outer walls of the two support plates 26. A first connecting rod 41 distributed in a circular array is installed on the outer wall of the first connecting plate 4. A second connecting rod 51 distributed in a circular array is installed on the outer wall of the second connecting plate 5. A limiting rod 42 is installed on the outer wall of the first connecting rod 41.

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

[0029] The transition roller 12 is used to change the direction of film movement, 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 limiting ring 13. The lead screw body 14 drives the limiting ring 13 to move relative to each other, thereby adjusting the distance between the limiting rings 13 and controlling the position of the film on the outer wall of the transition roller 12.

[0030] Example 2: A three-layer co-extrusion blown film device with adjustable spacing of limiting components, including 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 upper outer wall of the frame 1. Transition rollers 12 are rotatably installed inside the fixed frames 11. A fixed plate 2 is provided on one side of the upper outer wall of the frame 1. A groove 21 is opened on one side of the upper outer wall of the fixed plate 2. Slider 23 is slidably installed on both sides inside the groove 21. A support frame 24 is installed on one side of the upper outer wall of the slider 23. A support plate 26 is installed on one side of the upper outer wall of the support frame 24. The first connecting plate 4 and the second connecting plate 5 are rotatably installed on opposite sides of the outer walls of the two support plates 26. A first connecting rod 41 distributed in a circular array is installed on the outer wall of the first connecting plate 4. A second connecting rod 51 distributed in a circular array is installed on the outer wall of the second connecting plate 5. A limiting rod 42 is installed on the outer wall of the first connecting rod 41.

[0031] The fixing plate 2 is provided with bolts 25 arranged in a rectangular array inside. The bolts 25 are connected to the frame 1 to ensure the positional stability of the fixing plate 2 at the upper end of the frame 1.

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

[0033] A handle is installed on one end of the screw 22 that passes through the outer wall of the fixed plate 2. The operator drives the screw 22 to rotate in a circular motion by using the handle, so that the slider 23 moves relative to the screw 22 and the screw hole, thereby adjusting the distance 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 blown film device of the present invention also needs to provide a motor body 3 so that it can work normally. As is well known to those skilled in the art, the provision of the motor body 3 is commonplace and is a 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 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.

[0035] The first connecting rod 41 and the second connecting rod 51 are both designed in fours, and the first connecting rod 41 and the second connecting rod 51 are distributed in a cross pattern.

[0036] Brushes 53 are installed on the outer walls of both 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 and can clean the outer wall of the transition roller 12 to ensure the cleanliness of the outer wall of the transition roller 12.

[0037] The second connecting rod 51 has a limiting hole 52 inside. The limiting rod 42 adopts a circular shape design and 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 process.

[0038] Limiting blocks 43 arranged in a circular array are installed on the outer wall of the limiting rod 42. 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. The operator manually turns the handle, which drives 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, so that the brush 53 can be unfolded. This ensures that the cleaning range of the brush 53 can be adjusted, and that the equipment can be used for transition rollers 12 of different sizes, thus improving the applicability of the equipment. The motor body 3 drives the first connecting plate 4 to rotate in a circle, and the limiting rod 42 and the limiting blocks 43 ensure that the second connecting rod 51 rotates with the first connecting rod 41, ensuring that the brushes 53 on both sides rotate at the same speed, thereby causing dust and foreign objects on the outer wall of the transition roller 12 to fall off, ensuring the integrity of the cleaning of the transition roller 12, ensuring the cleanliness of the outer wall of the transition roller 12, avoiding contamination of 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 implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A three-layer co-extrusion blown film device with adjustable 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: The upper outer wall of the frame (1) is equipped with fixed frames (11) on both sides. The fixed frames (11) are rotatably installed with transition rollers (12). The upper outer wall of the frame (1) is provided with a fixed plate (2). The upper outer wall of the fixed plate (2) is provided with a sliding groove (21). The sliding groove (21) is slidably installed with sliders (23) on both sides. The upper outer wall of the slider (23) is equipped with a support frame (24). The upper outer wall of the support frame (24) is equipped with a support plate (26). The two support plates (26) are rotatably installed with a first connecting plate (4) and a second connecting plate (5) on opposite outer walls. The outer wall of the first connecting plate (4) is equipped with a first connecting rod (41) arranged in a circular array. The outer wall of the second connecting plate (5) is equipped with a second connecting rod (41) arranged in a circular array. 51), a limiting rod (42) is installed on the outer wall of the first connecting rod (41); a brush (53) is installed on the outer wall of both the first connecting rod (41) and the second connecting rod (51), the brush (53) is in contact with the outer wall of the transition roller (12), the brush (53) can clean the outer wall of the transition roller (12) to ensure the cleanliness of the outer wall of the transition roller (12); a limiting hole (52) is opened inside the second connecting rod (51), the limiting rod (42) adopts a circular shape design, the limiting rod (42) is located inside the limiting hole (52); a limiting block (43) with a circular array is installed on the outer wall of the limiting rod (42), the limiting 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).

2. The three-layer co-extrusion blown film device with self-adjustable spacing of limiting members according to claim 1, characterized in that: The screw body (14) is provided on one side of the outer wall of the fixed frame (11). Limiting rings (13) are provided on both sides of the outer wall of the screw body (14). The limiting rings (13) are located outside the transition roller (12). The screw body (14) drives the limiting rings (13) to move relative to each other, thereby adjusting the distance between the limiting rings (13).

3. The three-layer co-extrusion blown film device with self-adjustable spacing of limiting members according to claim 1, characterized in that: The fixing plate (2) is provided with bolts (25) arranged in a rectangular array inside. The bolts (25) are connected to the frame (1) to ensure the positional stability of the fixing plate (2) at the upper end of the frame (1).

4. A three-layer co-extrusion blown film device with self-adjustable spacing of limiting members according to claim 1, characterized in that: A screw (22) is rotatably installed on one side of the inner wall of the slide groove (21). A screw hole is opened inside the slider (23), and the screw (22) meshes inside the screw hole. The screw openings on both sides of the screw (22) are in opposite directions. The screw (22) is installed with a handle on one end of the outer wall of the fixed plate (2). The screw (22) is rotated by the handle, so that the slider (23) moves relative to the screw (22) and the screw hole, thereby adjusting the distance between the sliders (23).

5. A three-layer co-extrusion blown film device with self-adjustable spacing of limiting members according to claim 1, characterized in that: The first connecting plate (4) is provided with a motor body (3) through the outer wall of one end of the support plate (26). 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. A three-layer co-extrusion blown film device with self-adjustable spacing of limiting members according to claim 1, characterized in that: The first connecting rod (41) and the second connecting rod (51) are both designed to be four in number, and the first connecting rod (41) and the second connecting rod (51) are distributed in a cross shape.

7. A three-layer co-extrusion blown film device with self-adjustable spacing of limiting members according to claim 1, characterized in that: The transition roller (12) is used to change the direction of film movement, 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 limiting ring (13).

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