A multilayer co-extrusion composite equipment for film production

Abstract

This utility model discloses a multilayer co-extrusion composite equipment for film production, including a fixed frame, an extrusion box fixedly mounted on one side of the top of the fixed frame, and a composite die head connected to the bottom of the extrusion box; and an adjustment assembly, which includes two first fixed seats. This utility model, through the design of baffle plates, first extrusion rollers, and a fixed sleeve, allows for the downward feeding and extrusion of the multilayer structure film through the composite die head. Rotating the fixed sleeve drives a bidirectional lead screw to rotate, which in turn drives two baffle plates to move towards each other via two first connecting rods. This, in turn, drives two first extrusion rollers to move towards each other, and then the multilayer structure film is fed downward through the composite die head and extruded by the two first extrusion rollers. This method allows for adjustment of the thickness of the extruded multilayer structure film to meet different thickness requirements, improving the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of composite film processing technology, specifically to a multilayer co-extrusion composite equipment for film production. Background Technology

[0002] Multi-layer co-extrusion composite equipment is a specialized processing equipment that uses multiple extruders to work together to melt different plastic raw materials separately, and then combine them in layers within a composite die or distributor to form a multi-layer composite film. It is widely used in the production of high-barrier food packaging films, UV-resistant agricultural films, medical composite substrates, and other high-performance films.

[0003] In real-world applications, when using multilayer co-extrusion equipment to prepare composite films, different materials are melted and extruded to form a multilayer film structure. However, most multilayer co-extrusion equipment lacks a thickness adjustment mechanism, resulting in a fixed thickness for the extruded multilayer film. This fails to meet the needs of varying thicknesses and reduces the equipment's practicality. Therefore, a multilayer co-extrusion composite equipment for film production is needed. Utility Model Content

[0004] The purpose of this invention is to provide a multilayer co-extrusion composite equipment for thin film production, thereby solving the problems mentioned in the background section. To solve these technical problems, this invention is achieved through the following technical solution:

[0005] This utility model relates to a multilayer co-extrusion composite equipment for film production, comprising:

[0006] A fixed frame is provided with an extrusion box fixed on one side of the top of the fixed frame, and a composite die head is connected to the bottom end of the extrusion box;

[0007] The adjustment assembly includes two first fixed seats, one side of each of the two first fixed seats is fixedly mounted on one side of the composite die head, and a bidirectional lead screw is provided through the opposite sides of the two first fixed seats. A fixed sleeve is fixedly mounted in the middle of the outer wall of the bidirectional lead screw, and a first connecting rod is threaded on both sides of the outer wall of the bidirectional lead screw. A baffle plate is fixedly mounted on one side of each of the two first connecting rods, and a fixing block is fixedly mounted on both sides of the bottom end of each of the two baffle plates. Two first extrusion rollers are rotatably mounted on the four fixing blocks.

[0008] Furthermore, a second connecting rod is fixedly provided on the other side of each of the two baffles, and a sliding rod is provided through the opposite sides of the two second connecting rods.

[0009] Furthermore, the outer walls of the two baffles respectively penetrate both sides of the composite die head and slide in cooperation with the composite die head.

[0010] Furthermore, a second fixing seat is fixedly provided on both sides of the outer wall of the slide rod, and one side of each of the two second fixing seats is fixedly connected to the other side of the composite mold head.

[0011] Furthermore, it also includes an auxiliary extrusion assembly, which includes four first vertical rods, each of the four first vertical rods having a second vertical rod slidably mounted on its outer wall, each of the four second vertical rods having a connecting block fixedly mounted at its bottom end, the outer walls of the four connecting blocks having two connecting plates, and one side of the four connecting blocks having a second extrusion roller rotatably mounted on it.

[0012] Furthermore, one side of each of the two second vertical rods is threaded with a locking bolt, and one end of the locking bolt contacts the first vertical rod inside it.

[0013] Furthermore, a fixing groove is provided on one side of the connecting plate, and the outer side of the connecting block is slidably connected to the inner side of the fixing groove.

[0014] This utility model has the following beneficial effects:

[0015] This invention, through the design of a baffle plate, a first extrusion roller, and a fixed sleeve, allows for the downward extrusion of a multi-layered film via a composite die head. Rotating the fixed sleeve drives a bidirectional lead screw, which in turn drives two baffle plates to move towards each other via two first connecting rods. This, in turn, drives two first extrusion rollers to move towards each other. The extruded multi-layered film is then conveyed downward through the composite die head and extruded by the two first extrusion rollers. This method allows for adjustment of the extruded multi-layered film thickness to meet different thickness requirements, thus improving the practicality of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the adjustment component and the auxiliary extrusion component of this utility model;

[0019] Figure 3 This is a schematic diagram of the auxiliary extrusion component structure of this utility model;

[0020] Figure 4 For the present utility model Figure 3 A magnified structural diagram of point A in the middle.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Fixed frame; 2. Extrusion box; 3. Compound die head; 4. Adjustment assembly; 41. First fixed seat; 42. Bidirectional lead screw; 43. Fixed sleeve; 44. First connecting rod; 45. Baffle plate; 46. Fixed block; 47. First extrusion roller; 48. Second connecting rod; 49. Slide rod; 410. Second fixed seat; 5. Auxiliary extrusion assembly; 51. First vertical rod; 52. Second vertical rod; 53. Connecting plate; 54. Connecting block; 55. Second extrusion roller; 56. Locking bolt; 57. Fixed groove; 58. Support column. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Please see Figure 1-4 As shown, this utility model is a multilayer co-extrusion composite equipment for film production, comprising:

[0026] A fixed frame 1 is provided with an extrusion box 2 fixed on one side of the top of the fixed frame 1, and a composite die head 3 is connected to the bottom of the extrusion box 2.

[0027] The fixed frame 1 is also equipped with a conveyor roller frame and a winding roller frame for conveying and winding composite films; the extrusion box 2 is used for conveying multiple materials through melting; and the composite die head 3 is used to combine and layer the melts of different materials for shaping.

[0028] Adjustment component 4 includes two first fixed seats 41. One side of each of the two first fixed seats 41 is fixedly disposed on one side of the composite die head 3. A bidirectional lead screw 42 is provided through the opposite sides of the two first fixed seats 41. A fixed sleeve 43 is fixedly disposed in the middle of the outer wall of the bidirectional lead screw 42. A first connecting rod 44 is threaded on both sides of the outer wall of the bidirectional lead screw 42. A baffle plate 45 is fixedly disposed on one side of each of the two first connecting rods 44. A fixing block 46 is fixedly disposed on both sides of the bottom end of each of the two baffle plates 45. Two first extrusion rollers 47 are rotatably disposed on the four fixing blocks 46.

[0029] The first fixed seat 41 is used to connect and support the bidirectional lead screw 42. The bidirectional lead screw 42 is used to drive the two baffles 45 to move in the same or opposite directions. The outer wall of the bidirectional lead screw 42 is connected to the bearing of the first fixed seat 41. The outer wall of the fixed sleeve 43 is provided with anti-slip threads. The first extrusion roller 47 is used to extrude the multilayer structure film. The outer wall of the first extrusion roller 47 and one side of the baffle 45 are located on the same vertical plane. When the fixed block 46 contacts the inner wall of the composite die head 3, the outer wall of the bidirectional lead screw 42 is still connected to the first connecting rod 44.

[0030] A second connecting rod 48 is fixedly provided on the other side of each of the two baffle plates 45, and a slide rod 49 is provided through the opposite sides of the two second connecting rods 48.

[0031] The slide bar 49 has the same length as the double-acting lead screw 42, and the slide bar 49 is used to assist and limit the movement of the baffle plate 45.

[0032] The outer walls of the two baffles 45 penetrate through both sides of the composite mold head 3 and slide in fit with the composite mold head 3;

[0033] The slide bar 49 has two fixed second fixing seats 410 on both sides of its outer wall, and one side of each of the two second fixing seats 410 is fixedly connected to the other side of the composite mold head 3.

[0034] The second fixed seat 410 is used to connect and support the slide rod 49.

[0035] Working principle: When the multilayer structure film is extruded downward through the composite die head 3, the fixed sleeve 43 is rotated. The rotation of the fixed sleeve 43 drives the bidirectional lead screw 42 to rotate. The rotation of the bidirectional lead screw 42 drives the two first connecting rods 44 to move towards each other. The movement of the two first connecting rods 44 towards each other drives the two baffle plates 45 to move towards each other, which in turn drives the two first extrusion rollers 47 to move towards each other. Then, the multilayer structure film is extruded downward through the composite die head 3 and extruded by the two first extrusion rollers 47. In this way, the thickness of the extruded multilayer structure film can be adjusted to meet the application requirements of different thicknesses, thus improving the practicality of the device.

[0036] Please see Figure 1-4 As shown, this embodiment, based on the above embodiment, further includes:

[0037] The auxiliary extrusion assembly 5 includes four first vertical rods 51, each of the four first vertical rods 51 has a second vertical rod 52 slidably mounted on its outer wall, each of the four second vertical rods 52 has a connecting block 54 fixedly mounted at its bottom end, each of the four connecting blocks 54 has two connecting plates 53 mounted on its outer wall, and each of the four connecting blocks 54 has a second extrusion roller 55 rotatably mounted on one side.

[0038] The second extrusion roller 55 is used for secondary extrusion of the multilayer composite film. The size of the second extrusion roller 55 is adapted to the size of the first extrusion roller 47 and is located on the same vertical plane. Support columns 58 are fixedly provided on opposite sides of the two connecting plates 53. The opposite ends of the two support columns 58 are respectively fixedly connected to the two sides of the inner wall of the extrusion box 2.

[0039] One side of each of the two second vertical rods 52 is threaded with a locking bolt 56, and one end of the locking bolt 56 contacts the first vertical rod 51 inside it.

[0040] The locking bolt 56 is used to limit the first vertical rod 51.

[0041] A fixing groove 57 is provided on one side of the connecting plate 53, and the outer side of the connecting block 54 is slidably connected to the inner side of the fixing groove 57.

[0042] The length and height of the fixing groove 57 are adapted to the width and height of the connecting block 54.

[0043] Working principle: When the two first extrusion rollers 47 move towards each other to adjust the extrusion thickness of the multilayer structure film, they drive the first vertical rod 51 to move through the fixing block 46. The movement of the first vertical rod 51 drives the second vertical rod 52 to move, which in turn drives the two second extrusion rollers 55 to move towards each other through the four connecting blocks 54. This allows for simultaneous adjustment of the spacing between the second extrusion rollers 55, facilitating secondary extrusion of the multilayer structure film and improving interlayer adhesion. Next, by opening the locking bolt 56, moving the second vertical rod 52 up and down, and then tightening the locking bolt 56, the spacing between the first extrusion roller 47 and the second extrusion roller 55 can be adjusted.

[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multilayer co-extrusion composite equipment for film production, characterized in that, include: A fixed frame (1) is provided with an extrusion box (2) fixed on one side of the top of the fixed frame (1), and a composite die head (3) is connected to the bottom end of the extrusion box (2). Adjustment component (4), the adjustment component (4) includes two first fixed seats (41), one side of the two first fixed seats (41) is respectively fixedly disposed on one side of the compound die head (3), the opposite sides of the two first fixed seats (41) are connected by a bidirectional lead screw (42), a fixed sleeve (43) is fixedly disposed in the middle of the outer wall of the bidirectional lead screw (42), and the two sides of the outer wall of the bidirectional lead screw (42) are threaded with first connecting rods (44), one side of the two first connecting rods (44) is fixedly disposed with a baffle plate (45), the two sides of the bottom end of the two baffle plates (45) are fixedly disposed with a fixing block (46), and the four fixing blocks (46) are rotatably disposed with two first extrusion rollers (47).

2. The multilayer co-extrusion composite equipment for film production according to claim 1, characterized in that: A second connecting rod (48) is fixedly provided on the other side of each of the two baffles (45), and a slide rod (49) is provided through the opposite side of the two second connecting rods (48).

3. The multilayer co-extrusion composite equipment for film production according to claim 1, characterized in that: The outer walls of the two baffles (45) respectively penetrate both sides of the composite mold head (3) and slide with the composite mold head (3).

4. A multilayer co-extrusion composite equipment for film production according to claim 2, characterized in that: The slide bar (49) has two fixed second fixing seats (410) on both sides of its outer wall. One side of each of the two second fixing seats (410) is fixedly connected to the other side of the composite mold head (3).

5. A multilayer co-extrusion composite equipment for film production according to claim 1, characterized in that: It also includes an auxiliary extrusion assembly (5), which includes four first vertical rods (51), each of the four first vertical rods (51) has a second vertical rod (52) slidably mounted on its outer wall, each of the four second vertical rods (52) has a connecting block (54) fixedly mounted at its bottom end, each of the four connecting blocks (54) has two connecting plates (53) mounted on its outer wall, and each of the four connecting blocks (54) has a second extrusion roller (55) rotatably mounted on one side.

6. A multilayer co-extrusion composite equipment for film production according to claim 5, characterized in that: One side of each of the two second vertical rods (52) is threaded with a locking bolt (56), and one end of the locking bolt (56) contacts the first vertical rod (51) inside it.

7. A multilayer co-extrusion composite equipment for film production according to claim 5, characterized in that: A fixing groove (57) is provided on one side of the connecting plate (53), and the outer side of the connecting block (54) is slidably connected to the inner side of the fixing groove (57).

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