A multi-layer extrusion curtain film laminating machine set
By using a dual-dimensional adjustable cutting mechanism and a roller torsion spring buffer mechanism, the problems of inflexible cutter adjustment and insufficient buffering in the laminating unit are solved, enabling efficient and precise cutting of composite films of different specifications, thereby improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WENZHOU WINRICH MACHINERY CO LTD
- Filing Date
- 2026-02-09
- Publication Date
- 2026-05-12
AI Technical Summary
Existing laminating units suffer from poor cutter adjustment flexibility and insufficient precision during the edge cutting process, making it difficult to adapt to the needs of composite films with different widths and thicknesses. Furthermore, the lack of a buffer adjustment mechanism leads to problems such as uneven edges, deviation, and accumulation, affecting production efficiency and product quality.
A dual-dimensional adjustable cutting mechanism was designed, including a horizontal adjustment component and a vertical adjustment component. It adopts a horizontal drive screw with a bidirectional thread design and a roller torsion spring buffer mechanism, which, together with the blade assembly fixing mechanism, realizes precise adjustment and adaptive buffering of the cutting blade, ensuring the stability and accuracy of the cutting edge.
It improves the applicability and production efficiency of the edge trimming device, ensures the stability and continuity of the edge trimming process, enhances product quality, and reduces the failure rate.
Smart Images
Figure CN121650161B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of extrusion coating and lamination equipment, specifically a multi-layer extrusion coating and lamination unit. Background Technology
[0002] A plastic extrusion coating unit is a device used to coat the surface of substrates such as paper, BOPP, and BOPET with a plastic film layer. The main raw materials are polyethylene and polypropylene. This equipment enhances the tensile strength, airtightness, and moisture resistance of the substrate through melt extrusion, and is widely used in the production of packaging materials for cement, chemical products, and feed.
[0003] In actual production, after composite films are extruded and coated, their edges often have irregularities, roughness, and excessive width. This is because the coating amount at the edges of the substrate is difficult to control precisely during extrusion coating, and the substrate is prone to slight deviation and uneven stretching during transport, resulting in excess material accumulation or serrated or wavy defects at the edges of the formed composite film. These substandard edges not only affect the appearance quality of the packaging material but also cause a series of problems in subsequent processes such as winding, cutting, and printing: for example, irregular edges can lead to uneven tension of the roll during winding, resulting in loose rolls and wrinkles; rough edges may generate debris during handling or use, contaminating the contents of the packaging; and composite films that exceed the width limit cannot meet the specifications of subsequent processing equipment, directly reducing the product qualification rate.
[0004] Regarding the aforementioned technologies, although some laminating units are equipped with edge-cutting devices, the flexibility of the cutter position adjustment is poor. Most of them can only achieve adjustment in one direction, making it difficult to adapt to the production needs of composite films with different widths and thicknesses. The adjustment process is cumbersome and lacks precision. During the edge-cutting process, the composite film is prone to deviation, warping, wrinkling, etc., resulting in tilted and uneven cut edges, or even cutter jamming or breakage. When faced with sudden undulations or wrinkles on the surface of the composite film, the edge-cutting device lacks a buffer adjustment mechanism, which can easily cause the composite film to accumulate and tear, further reducing production efficiency and product quality. Summary of the Invention
[0005] To address the aforementioned shortcomings of existing technologies, this application provides a multilayer extrusion coating laminating unit, including a trimming frame of the coating laminating machine. The upper end of the trimming frame is equipped with a conveyor table and a trimming mechanism. The trimming mechanism includes a transverse adjustment component, a longitudinal adjustment component, and a longitudinal slider with a built-in ball nut. A support rod is located on the outer side of the longitudinal slider, and a fixing rod is located at the lower end of the support rod. A roller is mounted on the fixing rod, and a rotating ring is located near the roller on the fixing rod. A pressure plate with a through groove is located on the outer side of the rotating ring and near the roller. A cutter is located within the through groove of the pressure plate, and the cutting edge of the cutter penetrates the through groove on the pressure plate and extends to the upper surface of the conveyor table.
[0006] Furthermore, the rotating ring is provided with a torsion spring inside, one end of the torsion spring is fixedly connected to the rotating ring, and the other end of the torsion spring is fixedly connected to the fixed rod. A limiting ring is provided on the outer side of the rotating ring, and a limiting groove is provided on the outer side wall of the fixed rod near the limiting ring. The protrusion of the inner ring of the limiting ring is inserted into the limiting groove, and the limiting ring and the rotating ring rotate on the fixed rod.
[0007] Furthermore, the limiting ring slides into the limiting groove, and the central angle corresponding to the sliding stroke of the limiting ring in the limiting groove is less than 90 degrees. Under normal conditions, the lower end face of the pressure plate is parallel to the upper end face of the composite film on the conveyor table.
[0008] Furthermore, a push plate is provided at the lower end of the pressure plate and near the rotating ring. One end of the push plate away from the rotating ring is inserted into a groove opened on the lower end face of the push plate, and the other end of the push plate is in contact with the composite film on the conveyor table. The angle between the push plate and the pressure plate is an acute angle, and the opening of the angle between the push plate and the pressure plate faces the rotating ring.
[0009] Furthermore, the longitudinal adjustment assembly includes a longitudinal drive screw that passes through the longitudinal slider. The longitudinal drive screw and the longitudinal slider are connected by a built-in ball nut. The longitudinal slider moves along the length of the longitudinal drive screw. A second motor is provided at one end of the longitudinal drive screw. The output end of the second motor passes through a second bracket and is fixedly connected to the longitudinal drive screw. A second bracket is provided outside the second motor. A transverse slider with a built-in ball nut is provided outside the second bracket and at a position away from the longitudinal slider. The transverse slider is connected to the transverse adjustment assembly.
[0010] Furthermore, a longitudinal limiting rod is provided on the inner side of the second bracket and near the longitudinal slider. The longitudinal slider is sleeved on the longitudinal limiting rod and slides freely on the longitudinal limiting rod along the length direction of the longitudinal limiting rod.
[0011] Furthermore, the lateral adjustment assembly includes a lateral drive screw that passes through the lateral slider. The lateral drive screw and the lateral slider are connected by a built-in ball nut. One end of the lateral drive screw is provided with a first motor, and a first bracket is provided on the outside of the first motor. The lower end of the first bracket is fixedly connected to the edge trimming frame.
[0012] Furthermore, the transverse drive screw is configured as a bidirectional threaded screw, and two transverse sliders are sleeved on both ends of the transverse drive screw. The two transverse sliders are respectively engaged with the positive and negative thread sections of the transverse drive screw. One transverse slider is engaged with a right-hand thread, and the other transverse slider is engaged with a left-hand thread. The two transverse sliders move synchronously towards each other or synchronously away from each other on the transverse drive screw in a linear displacement.
[0013] Furthermore, a lateral limiting rod is provided on the inner side of the first bracket near the lateral drive screw, and the lateral slider is sleeved on the lateral limiting rod, and the lateral slider slides freely on the lateral limiting rod along the length direction of the lateral limiting rod.
[0014] Furthermore, a blade assembly fixing mechanism is provided at the upper end of the pressure plate and near the cutter. The blade assembly fixing mechanism includes a blade holder for clamping the cutter. A blade assembly knob is provided at the end of the blade holder away from the cutter. A blade assembly screw is inserted into the blade assembly knob. The blade assembly knob is threadedly connected to the blade assembly screw. The blade holder is rotatably connected to the blade assembly knob. The blade assembly knob is displaced along the length of the blade assembly screw. The lower end of the blade assembly screw is fixedly connected to the pressure plate.
[0015] The technical solution provided in this application has the following advantages compared with the known prior art:
[0016] 1. This application constructs a two-dimensional adjustment structure of "lateral adjustment component + longitudinal adjustment component" by setting up a cutting mechanism. The lateral drive screw adopts a bidirectional thread design, which, together with the lateral limiting rod, enables the two cutters to move synchronously in opposite directions with precision, quickly adapting to the cutting requirements of composite films of different widths. The longitudinal drive screw and the longitudinal limiting rod work together to flexibly adjust the longitudinal height of the cutter, ensuring adaptability to composite films of different thicknesses. Compared with the single and cumbersome cutter adjustment in the prior art, this application has higher adjustment efficiency and better precision, effectively broadening the applicability of the equipment and improving the versatility of producing composite films of different specifications.
[0017] 2. This application establishes a dual adaptive buffering mechanism by incorporating rollers and torsion springs. The rolling friction between the rollers and the composite film serves both as a guide to prevent deviation and, in the event of sudden fluctuations in the composite film, by lifting the rollers, temporarily raises the cutter to prevent jamming or breakage. The cooperation of the torsion springs with the rotating ring and the limiting ring provides buffering through the elastic rotation of the pressure plate when stubborn wrinkles appear in the composite film, preventing the composite film from piling up and tearing. Furthermore, the limiting ring and the limiting groove's limiting design ensure the pressure plate's resetting accuracy. This structure overcomes the deficiency of existing edge-cutting devices lacking a buffering adjustment mechanism, significantly improving the stability and continuity of the edge-cutting process and reducing the production failure rate.
[0018] 3. This application, by setting up a blade assembly fixing mechanism, uses a blade holder to firmly clamp the cutter. Combined with the threaded connection between the blade assembly knob and the blade assembly screw, it can precisely fine-tune the blade's extension height, ensuring the cutter completely penetrates the composite film and avoiding incomplete cutting. Simultaneously, the rotational connection design between the blade holder and the blade assembly knob maintains a stable cutting posture during adjustment, preventing blade misalignment and uneven cuts. Compared to the problems of unstable blade fixing and easy loosening in existing technologies, the blade assembly fixing mechanism of this application further ensures the flatness and consistency of the cut edge, improving product quality. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure in the embodiments of this application;
[0020] Figure 2 This is a schematic diagram of the edge-cutting mechanism in the embodiments of this application;
[0021] Figure 3 This is a schematic diagram of the roller structure in an embodiment of this application;
[0022] Figure 4 This is a schematic diagram of the pressure plate structure in an embodiment of this application;
[0023] Figure 5 This is a schematic diagram of the limiting ring structure in an embodiment of this application;
[0024] Figure 6 This is a schematic diagram of the push plate structure in an embodiment of this application;
[0025] Figure 7 This is a schematic diagram of the lateral adjustment component in an embodiment of this application;
[0026] Figure 8 This is a schematic diagram of the longitudinal adjustment component in an embodiment of this application;
[0027] Figure 9 This is a schematic diagram of the longitudinal drive screw in an embodiment of this application;
[0028] Figure 10 This is a schematic diagram of the blade assembly fixing mechanism in an embodiment of this application.
[0029] In the diagram: 1. Trimming frame; 11. Conveyor table; 2. Trimming mechanism; 21. Lateral adjustment assembly; 211. First support; 212. First motor; 213. Lateral drive screw; 214. Lateral limit rod; 22. Longitudinal adjustment assembly; 221. Lateral slider; 222. Second support; 223. Second motor; 224. Longitudinal drive screw; 225. Longitudinal limit rod; 23. Longitudinal slider; 24. Support rod; 25. Cutting blade; 26. Fixing rod; 27. Roller; 28. Pressure plate; 281. Push plate; 29. Rotary ring; 291. Limiting ring; 292. Limiting groove; 293. Torsion spring; 3. Blade assembly fixing mechanism; 31. Blade holder; 32. Blade assembly screw; 33. Blade assembly knob. Detailed Implementation
[0030] To better understand the above technical solution, the following will refer to the appendix to the instruction manual. Figure 1-10 The specific implementation methods are described in detail below for the above technical solutions.
[0031] refer to Figure 1 and Figure 2 This application discloses a multilayer extrusion coating laminating unit, which comprises a trimming frame 1, a conveyor table 11, a trimming mechanism 2, and a blade assembly fixing mechanism 3. The conveyor table 11 is fixedly installed on the upper end of the trimming frame 1 and is mainly used for conveying the composite film; the trimming mechanism 2 is installed on the upper end of the trimming frame 1 and near the conveyor table 11, and is responsible for trimming the composite film; the blade assembly fixing mechanism 3 is installed on the trimming mechanism 2 and its function is to fix the blades of the trimming mechanism 2.
[0032] During the production and processing of composite films by a multi-layer extrusion laminating machine, when the extruded composite film passes through the conveyor table 11, the edge cutting mechanism 2 can use the blades on the blade assembly fixing mechanism 3 to cut off the excess composite film at the edge of the composite film, so that the composite film size meets the specifications, removes excess scraps, and effectively improves the pass rate of the composite film.
[0033] refer to Figures 2 to 6The trimming mechanism 2 includes a transverse adjustment assembly 21, a longitudinal adjustment assembly 22, a longitudinal slider 23, a support rod 24, a cutter 25, a fixed rod 26, rollers 27, a pressure plate 28, a push plate 281, a rotating ring 29, a limiting ring 291, and a torsion spring 293. The transverse adjustment assembly 21 is installed on the outer side of the trimming frame 1 near its upper end, mounted above the conveyor table 11. The longitudinal adjustment assembly 22 is installed on the transverse adjustment assembly 21, and the longitudinal slider 23 is installed on the longitudinal adjustment assembly 22. The support rod 24 is installed on the outer side of the longitudinal slider 23, rotatably connected to the longitudinal slider 23, and located between the longitudinal slider 23 and the conveyor table 11. The fixed rod 26 is fixedly installed at the lower end of the support rod 24 near the conveyor table 11. Both the rollers 27 and the rotating ring 29 are sleeved on the fixed rod 26. The two rollers 27 are symmetrically distributed about the rotating ring 29, and their rotations do not interfere with each other. The outer wall of roller 27 experiences rolling friction with the composite film moving on the conveyor table 11, allowing it to roll on the surface of the composite film. Cutter 25 is mounted on the end of support rod 24 away from the longitudinal slider 23 and connected to the cutter assembly fixing mechanism 3. Pressure plate 28 is fixed to the outer side of rotating ring 29 near roller 27, with its lower end face parallel to the composite film on the conveyor table 11, and is a plate with a groove in the middle. The lower blade of cutter 25 is inserted into this groove and extends onto the conveyor table 11 for edge trimming. Pressure plate 28 can flatten the composite film around cutter 25, facilitating cutting operations. A limiting groove 292 is provided on the outer wall of fixing rod 26 near rotating ring 29. A limiting ring 291 is fixed to the inner wall of rotating ring 29 near limiting groove 292, with its inner ring protrusion inserted into limiting groove 292. The two slide in contact, and the concentric angle corresponding to the sliding stroke is less than ninety degrees. A torsion spring 293 is sleeved on the fixed rod 26 near the rotating ring 29. One end is fixedly connected to the rotating ring 29, and the other end is fixedly connected to the fixed rod 26. The rotating ring 29 can rotate on the fixed rod 26 via the torsion spring 293. When rotating, the torsion spring 293 undergoes elastic deformation. A groove is opened on the lower end face of the pressure plate 28 near the rotating ring 29. One end of the push plate 281 is inserted into the groove and rotates at an acute angle with the pressure plate 28. The included angle opening faces the rotating ring 29, and the other end overlaps on the conveyor table 11 and contacts the composite film.
[0034] Before the trimming mechanism 2 trims the composite film, the position of the cutter 25 needs to be adjusted according to the width and thickness of the composite film: the lateral position of the cutter 25 is adjusted by the lateral adjustment component 21 to remove excess scrap; the longitudinal position of the cutter 25 is adjusted by the longitudinal adjustment component 22 to ensure that it completely penetrates the composite film. After the composite film is ready, the support rod 24 of the trimming mechanism 2 is lowered to allow it to hang freely. At this time, the roller 27 contacts the composite film, and the lower end face of the pressure plate 28 also contacts the composite film, and the cutter 25 penetrates the composite film. When the winding mechanism winds the composite film, the composite film continuously moves on the conveyor table 11, driving the roller 27 to rotate, preventing the composite film from deviating or warping; at the same time, the push plate 281 at the lower end of the pressure plate 28 slides and rubs against the upper end face of the composite film, smoothing out surface wrinkles and keeping the composite film flat. The pressure plate 28 can also further smooth the composite film, reducing the possibility of wrinkles, bending, deviation or deformation around the cutter 25, ensuring that the cutter cuts normally and keeping the cut part of the composite film in a flat state during displacement.
[0035] If the composite film experiences large folds or undulations during movement that are difficult to smooth out quickly by the rollers 27, the undulating parts will lift the rollers 27, causing the cutter 25 at the rear end to be raised. This prevents the undulating parts of the composite film from getting stuck at the push plate 281, thus avoiding large-area accumulation of the composite film. It also prevents the cutter 25 from failing to cut the composite film due to the undulating parts, which could lead to large-area accumulation or even breakage of the cutter 25. After passing the undulating area, the weight of the support rod 24 allows the pressure plate 28 and the cutter 25 to automatically return to their original positions. Similarly, if a fold cannot be smoothed out by the push plate 281, and the pushing force is greater than the elastic force of the torsion spring 293, the pressure plate 28 will rotate around the rotating ring 29 as a fulcrum, also preventing the composite film from getting stuck. The torsion spring 293 and the limiting ring 291 assist the pressure plate 28 in automatically returning to its original position.
[0036] refer to Figure 2 , Figure 7 , Figure 8 and Figure 9The lateral adjustment assembly 21 includes a first bracket 211, a first motor 212, a lateral drive screw 213, and a lateral limiting rod 214. The first bracket 211 is fixedly installed on the outside of the trimming frame 1 and near the conveyor table 11, with two first brackets 211 symmetrically distributed about the trimming frame 1. The first motor 212 is fixedly installed on the outside of the first bracket 211. The lateral drive screw 213 is rotatably installed between the two first brackets, and one end of the lateral drive screw 213 is fixedly connected to the output end of the first motor 212. Rotation of the output end of the first motor 212 can drive the rotation of the lateral drive screw 213. The lateral limiting rod 214 is fixedly installed between the two first brackets 211, and the lateral limiting rod 214 is parallel to the lateral drive screw 213. The longitudinal adjustment assembly 22 is installed between the two first brackets 211 and can perform linear displacement along the length direction of the lateral drive screw 213.
[0037] The longitudinal adjustment assembly 22 includes a transverse slider 221, a second bracket 222, a second motor 223, a longitudinal drive screw 224, and a longitudinal limiting rod 225. The transverse slider 221 is sleeved on the transverse drive screw 213, and has a built-in ball nut. The transverse slider 221 moves linearly along the transverse drive screw 213 via the built-in ball nut. The transverse drive screw 213 is a bidirectional threaded screw, and the two transverse sliders 221 are respectively engaged with the positive and negative thread sections of the transverse drive screw 213. When the first motor 212 drives the transverse drive screw 213 to rotate, the two transverse sliders 221 move synchronously towards each other or away from each other along the transverse drive screw 213. During the movement, the displacement rates of the two transverse sliders 221 are the same. The second bracket 222 is fixedly installed on the outside of the transverse slider 221. The second motor 223 is fixedly installed on the upper end of the second bracket 222, near the center. A longitudinal drive screw 224 is rotatably mounted inside the second bracket 222, and one end of the longitudinal drive screw 224 is fixedly connected to the output end of the second motor 223. A longitudinal limit rod 225 is fixedly mounted inside the second bracket 222, and the longitudinal limit rod 225 is parallel to the longitudinal drive screw 224. A longitudinal slider 23 is sleeved on the longitudinal drive screw 224, and the longitudinal slider 23 has a built-in ball nut. The longitudinal slider 23 is engaged with the longitudinal drive screw 224 through the built-in ball nut, and the longitudinal slider 23 moves linearly on the longitudinal screw through the built-in ball nut.
[0038] Before trimming the composite film, the position of the cutter 25 is adjusted according to the specifications of the composite film. First, based on the required width of the composite film, the first motor 212 is started, causing its output to drive the transverse drive screw 213 to rotate. The rotation of the transverse drive screw 213 causes the two transverse sliders 221 on it to move synchronously towards each other or synchronously away from each other on the transverse drive screw 213, so that the cutter 25 can cut a finished composite film of appropriate width. After the transverse position is adjusted, based on the thickness of the composite film, the second motor 223 is started, causing its output to drive the longitudinal drive screw 224 to rotate. The rotation of the longitudinal drive screw 224 causes the longitudinal slider 23 to move linearly on the longitudinal drive screw 224, so that the pressure plate 28 and the roller 27 can make precise contact with the upper surface of the composite film, allowing the roller 27, pressure plate 28, and push plate 281 to smoothly and quickly smooth out wrinkles on the composite film. To prevent the pressure plate 28 from applying excessive force to the composite membrane, which could lead to difficulty in displacement of the composite membrane and cause the composite membrane to accumulate.
[0039] refer to Figure 2 and Figure 10 The blade assembly fixing mechanism 3 includes a blade holder 31, a blade assembly screw 32, and a blade assembly knob 33. The blade assembly screw 32 is fixedly installed on the upper end of the pressure plate 28, near the cutter 25. The blade assembly knob 33 is sleeved on the blade assembly screw 32, and the blade assembly knob 33 is threadedly connected to the blade assembly screw 32. The blade holder 31 is rotatably installed on the lower end of the blade assembly knob 33, and the end of the blade holder 31 connected to the blade assembly knob 33 is also sleeved on the blade assembly screw 32. The cutter 25 is installed on the blade holder 31.
[0040] After the longitudinal adjustment component 22 is adjusted, according to the thickness of the composite film, rotate the blade assembly knob 33 so that the blade assembly knob 33 drives the blade holder 31 to move linearly on the blade assembly screw 32, adjust the height of the blade 25 so that the tip of the blade 25 can completely penetrate the composite film, ensure that the blade 25 can smoothly cut the composite film, and reduce the phenomenon of incomplete cutting of the composite film.
[0041] The working principle of this application embodiment:
[0042] Before the multilayer extrusion laminating machine starts working, the equipment is first debugged according to the preset width and thickness specifications of the composite film to be processed. The first motor 212 is started to drive the transverse drive screw 213 to rotate. Since the transverse drive screw 213 has a bidirectional thread structure, the transverse sliders 221 meshing at both ends will move synchronously towards each other or away from each other along the transverse limit rod 214, thereby adjusting the transverse distance between the two cutters 25 to match the target width of the composite film. Then the second motor 223 is started to drive the longitudinal drive screw 224 to rotate, causing the longitudinal slider 23 to move up and down along the longitudinal limit rod 225, so that the roller 27 and pressure plate 28 at the lower end of the support rod 24 are just in contact with the surface of the conveyor table 11 with moderate contact pressure, avoiding excessive pressure that would affect the conveying of the composite film. Finally, rotate the knife assembly knob 33. Through the threaded engagement between the knife assembly knob 33 and the knife assembly screw 32, the knife holder 31 is moved up and down to adjust the extension height of the cutter 25, ensuring that the cutter 25 can completely penetrate the thickness direction of the composite film. At the same time, the knife holder 31 forms a firm clamp on the cutter 25 to prevent loosening or displacement during the cutting process.
[0043] When the multilayer extrusion coating laminating machine is working, the composite film formed by extrusion coating is continuously conveyed forward by the conveyor table 11. During the movement of the composite film, the roller 27 will rotate. The rolling friction between the roller 27 and the composite film plays a guiding and anti-deviation role. At the same time, the push plate 281 at the lower end of the pressure plate 28 slides in contact with the surface of the composite film. Since the push plate 281 and the pressure plate 28 form an acute angle and the opening faces the rotating ring 29, it can smoothly push out the slight wrinkles on the surface of the composite film. Combined with the flattening effect of the pressure plate 28 on the area around the cutter 25, it ensures that the composite film enters the cutting area in a flat posture. The cutter 25 then continuously cuts along the edge of the composite film to remove excess irregular edges. If there are large undulations on the surface of the composite film, the undulations will lift the roller 27, causing the cutter 25 to be temporarily lifted, preventing the composite film from jamming or the cutter 25 from breaking. After passing the undulations, the weight of the support rod 24 can drive the cutter 25 and the pressure plate 28 to automatically reset. If a wrinkle that is difficult to flatten is encountered and the pushing force is greater than the elastic force of the torsion spring 293, the pressure plate 28 will rotate around the rotating ring 29 as the fulcrum. The torsion spring 293 will undergo elastic deformation to provide buffer. The cooperation between the limiting ring 291 and the limiting groove 292 limits the rotation angle of the rotating ring 29 to no more than 90 degrees. After the wrinkle is passed, the elastic restoring force of the torsion spring 293 can drive the pressure plate 28 to reset. Throughout the process, through the coordinated action of the horizontal adjustment component 21, the vertical adjustment component 22, and the cutter fixing mechanism 3, as well as the adaptive adjustment of the torsion spring 293, the push plate 281 and other structures, the precise and stable cutting of the composite film is achieved, ensuring that the finished composite film has compliant dimensions and a flat cut.
[0044] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multilayer extrusion coating laminating unit, comprising a trimming frame (1) of the coating laminating machine, wherein a conveyor table (11) is provided at the upper end of the trimming frame (1), characterized in that, The upper end of the edge trimming frame (1) is provided with an edge trimming mechanism (2). The edge trimming mechanism (2) includes a horizontal adjustment component (21). The horizontal adjustment component (21) is provided with a vertical adjustment component (22). The vertical adjustment component (22) is provided with a vertical slider (23) with a built-in ball nut. The outer side of the vertical slider (23) is provided with a support rod (24). The lower end of the support rod (24) is provided with a fixing rod (26). The fixing rod (26) is provided with a roller (27). The fixing rod (26) is provided with a rotating ring (29) near the roller (27). The outer side of the rotating ring (29) and near the roller (27) is provided with a pressure plate (28) with a through groove in the middle. The through groove of the pressure plate (28) is provided with a cutter (25). The blade of the cutter (25) penetrates the through groove on the pressure plate (28) and extends to the upper end face of the conveyor table (11). The rotating ring (29) is provided with a torsion spring (293) inside. One end of the torsion spring (293) is fixedly connected to the rotating ring (29), and the other end of the torsion spring (293) is fixedly connected to the fixed rod (26). The rotating ring (29) is provided with a limiting ring (291) on the inner side. A limiting groove (292) is provided on the outer side wall of the fixed rod (26) near the limiting ring (291). The limiting ring (291) is fixed on the inner side wall of the rotating ring (29) near the limiting groove (292). The protrusion of the inner ring of the limiting ring (291) is inserted into the limiting groove (292). The limiting ring (291) and the rotating ring (29) rotate on the fixed rod (26).
2. The multilayer extrusion coating composite unit according to claim 1, characterized in that, The limiting ring (291) slides in conjunction with the limiting groove (292), and the central angle corresponding to the sliding stroke of the limiting ring (291) in the limiting groove (292) is less than 90 degrees. Under normal conditions, the lower end face of the pressure plate (28) is parallel to the upper end face of the composite film on the conveyor table (11).
3. The multilayer extrusion coating composite unit according to claim 2, characterized in that, A push plate (281) is provided at the lower end of the pressure plate (28) and near the rotating ring (29). One end of the push plate (281) away from the rotating ring (29) is inserted into a groove on the lower end face of the push plate (281). The other end of the push plate (281) is in contact with the composite film on the conveyor table (11). The angle between the push plate (281) and the pressure plate (28) is an acute angle. The opening of the angle between the push plate (281) and the pressure plate (28) faces the rotating ring (29).
4. The multilayer extrusion coating composite unit according to claim 1, characterized in that, The longitudinal adjustment assembly (22) includes a longitudinal drive screw (224) that passes through the longitudinal slider (23). The longitudinal drive screw (224) and the longitudinal slider (23) are connected by a built-in ball nut. The longitudinal slider (23) moves along the length of the longitudinal drive screw (224). A second motor (223) is provided at one end of the longitudinal drive screw (224). The output end of the second motor (223) passes through the second bracket (222) and is fixedly connected to the longitudinal drive screw (224). A second bracket (222) is provided on the outside of the second motor (223). A transverse slider (221) with a built-in ball nut is provided on the outside of the second bracket (222) and away from the longitudinal slider (23). The transverse slider (221) is connected to the transverse adjustment assembly (21).
5. A multilayer extrusion coating composite unit according to claim 4, characterized in that, A longitudinal limiting rod (225) is provided on the inner side of the second bracket (222) and near the longitudinal slider (23). The longitudinal slider (23) is sleeved on the longitudinal limiting rod (225) and slides freely on the longitudinal limiting rod (225) along the length direction of the longitudinal limiting rod (225).
6. The multilayer extrusion coating composite unit according to claim 1, characterized in that, The lateral adjustment assembly (21) includes a lateral drive screw (213) that passes through the lateral slider (221). The lateral drive screw (213) and the lateral slider (221) are connected by a built-in ball nut. One end of the lateral drive screw (213) is provided with a first motor (212). A first bracket (211) is provided on the outside of the first motor (212). The lower end of the first bracket (211) is fixedly connected to the edge trimming frame (1).
7. A multilayer extrusion coating composite unit according to claim 6, characterized in that, The transverse drive screw (213) is configured as a bidirectional threaded screw, and two transverse sliders (221) are sleeved on both ends of the transverse drive screw (213). The two transverse sliders (221) are respectively engaged with the positive and negative thread sections of the transverse drive screw (213). One of the transverse sliders (221) is engaged with the right-hand thread, and the other transverse slider (221) is engaged with the left-hand thread. The two transverse sliders (221) make synchronous linear displacements on the transverse drive screw (213) towards each other or synchronously away from each other.
8. A multilayer extrusion coating composite unit according to claim 7, characterized in that, A transverse limiting rod (214) is provided on the inner side of the first bracket (211) near the transverse drive screw (213). The transverse slider (221) is sleeved on the transverse limiting rod (214) and slides freely on the transverse limiting rod (214) along the length direction of the transverse limiting rod (214).
9. A multilayer extrusion coating composite unit according to claim 1, characterized in that, A blade assembly fixing mechanism (3) is provided at the upper end of the pressure plate (28) and near the cutter (25). The blade assembly fixing mechanism (3) includes a blade holder (31) for clamping the cutter (25). A blade assembly knob (33) is provided at the end of the blade holder (31) away from the cutter (25). A blade assembly screw (32) is inserted into the inside of the blade assembly knob (33). The blade assembly knob (33) is threadedly connected to the blade assembly screw (32). The blade holder (31) is rotatably connected to the blade assembly knob (33). The blade assembly knob (33) moves along the length direction of the blade assembly screw (32). The lower end of the blade assembly screw (32) is fixedly connected to the pressure plate (28).