An irregular sheet film laminating and pressing device and a laminating and pressing method

Abstract

The present application relates to a kind of special-shaped sheet film laminating press device and laminating press method, comprising: base;Displacement component, first driving part is connected with base, the output end of first driving part is connected with positioning frame, and positioning frame includes discharge position;Rolling assembly, including rotatable press roller, the side wall of press roller can be rolled to the film in discharge position;Hot pressing component, buffer material mechanism includes connecting seat, buffer unit and hot pressing plate, the output end of second driving part is connected with connecting seat, hot pressing plate is connected to the side of connecting seat close to the moving path of positioning frame, and hot pressing plate can move towards the moving path close to positioning frame, buffer unit is connected to the edge of connecting seat, and the end of buffer unit can be abutted with base.The present application relates to a kind of special-shaped sheet film laminating press device and laminating press method, can buffer during the pressing and laminating process of film, while being able to flatten and exhaust film.

Description

Technical Field

[0001] This invention relates to the field of film lamination and pressing apparatus, and in particular to a film lamination and pressing apparatus and method for irregularly shaped sheets. Background Technology

[0002] In industries such as electronics, decoration, and precision manufacturing, irregularly shaped sheets often require film lamination to achieve purposes such as insulation, protection, aesthetics, or functional enhancement. Traditional film lamination of irregularly shaped sheets mostly uses manual lamination or simple pressing equipment. Traditional film lamination methods for irregularly shaped sheets generally suffer from problems such as uneven lamination, easy formation of air bubbles, and poor positioning accuracy, making it difficult to meet the high-quality lamination requirements of irregularly shaped structural components.

[0003] CN118578656B discloses a lamination and pressing process for irregularly shaped sheets and films. This process utilizes a pressing plate, a lifting plate, and a second driving component. The second driving component extends and retracts on a support frame, causing the lifting plate to rise and fall. The movement of the lifting plate adjusts the position of the pressing plate, thereby controlling the compression of the film by the pressing plate. This prevents insufficient contact between the pressing plate and the film, ensuring the accuracy of the pressing. An auxiliary component on a base rolls the film after the mounting components are pressed, preventing excessive force from damaging the film. However, this equipment uses rigid direct pressing, resulting in concentrated pressure and high impact during the pressing process. The lack of an effective buffer and pressure reduction structure easily leads to excessive film compression and breakage, deformation of irregularly shaped sheets, or damage to the mold. This not only affects the product molding quality but also reduces the service life of the mold and equipment. In addition, most equipment directly forms the film through a single pressing without pre-leveling and degassing the film. As a result, wrinkles and curling edges are easily generated during the film lamination process, and air between layers cannot be effectively discharged. After hot pressing, bubbles and voids are easily formed inside the product, resulting in insufficient bonding strength, poor appearance, and a low finished product qualification rate. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a device and method for bonding and pressing irregularly shaped sheet films, which can buffer the film during the pressing and bonding process, and at the same time level and degas the film.

[0005] To solve the above-mentioned technical problems, the present invention provides an irregularly shaped sheet film bonding and pressing device, comprising: a base; a displacement assembly including a first driving member and a positioning frame, the first driving member being connected to the base, the output end of the first driving member being connected to the positioning frame, the positioning frame including a feeding position; a rolling assembly including a rotatable pressure roller, the sidewall of the pressure roller being capable of rolling the film located at the feeding position; and a hot pressing assembly including a second driving member and a buffer pressing mechanism, the buffer pressing mechanism including a connecting seat, a buffer unit, and a hot pressing plate, the output end of the second driving member being connected to the connecting seat, the hot pressing plate being connected to the side of the connecting seat near the moving path of the positioning frame, and the hot pressing plate being capable of moving towards the moving path near the positioning frame, the buffer unit being connected to the edge of the connecting seat, and the end of the buffer unit being capable of abutting against the base.

[0006] In one embodiment of the invention, a housing is further included, the housing including a receiving space, the hot pressing assembly being located within the receiving space, and the positioning frame being movable into the receiving space.

[0007] In one embodiment of the present invention, the hot pressing assembly further includes a support rod and a frame plate, the two ends of the support rod being located at the end of the accommodating space and the base, respectively, the frame plate being connected to a collar, the collar being sleeved on the support rod, the second driving member being connected to the frame plate, and the connecting seat being slidably connected to the frame plate.

[0008] In one embodiment of the present invention, the buffer unit includes a connecting rod, a mounting plate, and a support block. The two ends of the connecting rod are respectively connected to the connecting seat and the mounting plate. The support block is connected to the end of the mounting plate away from the connecting rod and extends towards the moving path close to the hot press plate. The contact position between the support block and the mounting plate is arc-shaped, and the support block can abut against the base.

[0009] In one embodiment of the present invention, the buffer unit further includes a buffer pad located on the side of the support block near the mounting plate. The side of the buffer pad near the mounting plate is provided with a hollow groove, and an internal pad is provided in the hollow groove.

[0010] In one embodiment of the present invention, the displacement component further includes a template, the positioning frame includes a support plate and a positioning unit, the support plate is connected to the output end of the first driving member, the positioning unit is connected to the support plate, the template is engaged with the positioning unit, and the material feeding position is located on the template.

[0011] In one embodiment of the present invention, the positioning unit includes a connecting plate and clamping blocks. The connecting plate is connected to the edge of the support plate. At least two clamping blocks are located on one side of the connecting plate and extend away from the edge of the support plate. A positioning space is formed between two adjacent clamping blocks. The edge of the template is provided with positioning blocks, and the positioning blocks are located within the positioning space.

[0012] In one embodiment of the present invention, the positioning unit further includes a clamping piece located at the end of the clamping block away from the connecting plate, and the positioning block abuts against the clamping piece.

[0013] In one embodiment of the present invention, the roller pressing assembly includes a mounting frame and a support rod, the mounting frame is connected to the cover, the support rod is connected to the mounting frame, and the pressure roller is sleeved on the support rod and rotatably connected to the support rod.

[0014] This invention also provides a method for laminating and pressing irregularly shaped sheets with film. The method uses the aforementioned irregularly shaped sheet film laminating and pressing device to laminate the irregularly shaped sheet with film, comprising the following steps: Step S1: The irregularly shaped sheet is placed in the feeding position, and the film is applied onto the irregularly shaped sheet; Step S2: The positioning frame moves along a path close to the hot press plate until it reaches the hot pressing position. During the movement of the positioning frame, the pressure roller abuts against the film and rolls it; Step S3: The hot press plate moves towards the positioning frame until it reaches the preheating position. At this point, there is a gap between the hot press plate and the film, and the hot press plate preheats the film; Step S4: The hot press plate is reset, and the positioning frame moves back to the hot pressing position. During the movement of the positioning frame, the pressure roller abuts against the film and rolls it; Step S5: The hot press plate moves towards the positioning frame until it abuts against the film and performs hot pressing and laminating of the film. The buffer unit abuts against the base.

[0015] The technical solution of the present invention has the following advantages compared with the prior art:

[0016] 1. The irregular sheet film bonding and pressing device and method of the present invention, through the movable setting of the positioning frame, enables the pressure roller and the film to roll into contact. The pressure roller continuously and uniformly rolls the film, expelling the air between the film and the irregular sheet, and at the same time, it can flatten the film, eliminate problems such as film wrinkles, curling edges, and looseness, and ensure that the film is in a highly flat state before hot pressing, thereby improving the flatness and density of irregular sheet film bonding.

[0017] 2. By incorporating a buffer unit, the hot press plate can cushion the film during the bonding and pressing process, reducing the instantaneous impact pressure of the hot press plate on the irregularly shaped sheet. This prevents film damage and sheet deformation caused by excessive pressure from the hot press plate, thus improving the finished product yield. The S-shaped spring structure at the junction of the mounting plate and support block, along with the buffer pad, hollow groove, and internal pad, form a multi-level elastic buffer structure. This reduces instantaneous impact pressure, preventing film damage and sheet deformation caused by excessive pressure from the hot press plate. The hot press plate applies stable and uniform pressure to the film, ensuring thorough fusion and shaping of the irregularly shaped sheet and film, further improving the finished product yield.

[0018] 3. The film is first preheated by a hot press plate to soften it, then the pressure roller is used to vent the film, and finally the hot press plate is used to compact the film into shape. This process of preheating, venting, and pressing is completed in a continuous manner, which effectively reduces defects such as bubbles, delamination, and voids inside the film and improves the density of the product.

[0019] 4. The positioning unit positions the template, ensuring that the template remains stable and accurately positioned during movement, film rolling, and film hot pressing, preventing loosening or misalignment. Attached Figure Description

[0020] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of an irregularly shaped sheet film bonding and pressing device according to the present invention;

[0022] Figure 2 yes Figure 1 A structural diagram from another angle;

[0023] Figure 3 yes Figure 1 Partial structural diagram;

[0024] Figure 4 yes Figure 3 Internal structure diagram;

[0025] Figure 5 This is a schematic diagram of the hot-pressing assembly;

[0026] Figure 6 This is a schematic diagram of the assembly structure of the buffer unit and the connecting seat;

[0027] Figure 7 This is a schematic diagram of the buffer unit structure;

[0028] Figure 8 yes Figure 7 A magnified view of a portion of position A in the middle;

[0029] Figure 9 This is a schematic diagram of the assembly structure of the displacement component and the roll forming component;

[0030] Figure 10 This is a schematic diagram of the assembly structure of the template and the positioning frame;

[0031] Figure 11 yes Figure 10 A magnified view of a portion of position B in the middle;

[0032] Figure 12 This is a flowchart of a method for laminating and pressing irregularly shaped sheet films.

[0033] Explanation of reference numerals in the accompanying drawings: 1. Base; 2. Displacement assembly; 3. Hot pressing assembly; 4. Cover; 5. Roller pressing assembly; 21. Template; 22. First driving component; 23. Positioning frame; 231. Bearing plate; 232. Clamping block; 233. Clamping piece; 234. Connecting plate; 31. Second driving component; 32. Frame plate; 33. Support rod; 34. Buffer pressing mechanism; 341. Connecting seat; 342. Mounting plate; 343. Hot pressing plate; 344. Connecting rod; 345. Support block; 346. Buffer pad; 347. Hollow groove; 348. Internal pad; 35. Collar; 51. Mounting frame; 52. Frame rod; 53. Pressure roller. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0035] Reference Figures 1 to 5 As shown, an irregularly shaped sheet film bonding and pressing device of the present invention includes: a base 1; a displacement assembly 2, including a first driving member 22 and a positioning frame 23, wherein the first driving member 22 is connected to the base 1, and the output end of the first driving member 22 is connected to the positioning frame 23, and the positioning frame 23 includes a feeding position; a rolling assembly 5, including a rotatable pressure roller 53, the side wall of the pressure roller 53 being able to roll the film located at the feeding position; and a hot pressing assembly 3, including a second driving member 31 and a buffer pressing mechanism 34, wherein the buffer pressing mechanism 34 includes a connecting seat 341, a buffer unit and a hot pressing plate 343, the output end of the second driving member 31 being connected to the connecting seat 341, the hot pressing plate 343 being connected to the side of the connecting seat 341 near the moving path of the positioning frame 23, and the hot pressing plate 343 being able to move towards the moving path near the positioning frame 23, the buffer unit being connected to the edge of the connecting seat 341, and the end of the buffer unit being able to abut against the base 1.

[0036] In this embodiment, an irregularly shaped sheet and film bonding and pressing device is used to bond and press the irregularly shaped sheet and film together. First, the irregularly shaped sheet is placed in the feeding position, and the film is applied onto the irregularly shaped sheet. Then, the first driving member 22 drives the positioning frame 23 to move along the moving path close to the hot press plate 343 until the positioning frame 23 moves to the hot press position. During the movement of the positioning frame 23, the pressure roller 53 abuts against the film and rolls the film. Then, the second driving member 31 drives the hot press plate 343 to move towards the positioning frame 23. The positioning frame 23 moves until the hot press plate 343 reaches the preheating position. At this point, there is a gap between the hot press plate 343 and the film. The hot press plate 343 preheats the film. Then, the hot press plate 343 resets, and the positioning frame 23 moves to the hot pressing position again after resetting. During the movement of the positioning frame 23, the pressure roller 53 abuts against the film and rolls it. Finally, the hot press plate 343 moves towards the positioning frame 23 until it abuts against the film and performs hot pressing on the film. The buffer unit abuts against the base 1. The movable setting of the positioning frame 23 allows the pressure roller 53 to roll into contact with the film. The pressure roller 53 continuously and evenly rolls the film, expelling air between the film and the irregular sheet. At the same time, it can flatten the film, eliminating problems such as wrinkles, curling edges, and looseness, ensuring that the film is in a highly flat state before hot pressing, and improving the flatness and density of the irregular sheet film bonding. By setting up a buffer unit, the hot press plate 343 can buffer the hot press plate 343 during the bonding and pressing process of the film, reduce the instantaneous impact pressure of the hot press plate 343 on the irregular sheet, avoid film damage and irregular sheet deformation caused by excessive pressure from the hot press plate 343, and improve the finished product qualification rate.

[0037] Reference Figure 1 and Figure 2 As shown, the base 1 is used to support the displacement assembly 2, the roller pressing assembly 5, and the hot pressing assembly 3.

[0038] Reference Figure 3 and Figure 4 As shown, the displacement component 2 is located at the top center of the base 1. The displacement component 2 includes a first driving member 22 and a positioning frame 23. The first driving member 22 is a linear driving member, which is arranged in parallel and connected to the base 1. The output end of the first driving member 22 is connected to the positioning frame 23, and the first driving member 22 can drive the positioning frame 23 to move. In this embodiment, the displacement component 2 includes two first driving members 22.

[0039] Reference Figures 9 to 11As shown, the positioning frame 23 includes a material feeding position. Specifically, the displacement component 2 also includes a template 21. The positioning frame 23 includes a support plate 231 and a positioning unit. The bottom of the support plate 231 is connected to the output end of the first driving component 22, and the positioning unit is connected to the edge of the support plate 231. The template 21 is engaged with the positioning unit. The top side of the support plate 231 is provided with a support groove, and the template 21 is located in the support groove. The support plate 231 provides a flat and stable support base for the template 21, ensuring that the template 21 is placed horizontally and avoiding tilting that would affect the film bonding accuracy. The top side of the template 21 is provided with a material loading groove, and the material feeding position is located in the material loading groove of the template 21. The material loading groove is used to accommodate irregularly shaped sheets. According to the shape and size of the irregularly shaped sheets, the material loading groove can be set to a shape and size corresponding to the irregularly shaped sheets.

[0040] The positioning unit includes a connecting plate 234 and clamping blocks 232. The connecting plate 234 is connected to the edge of the support plate 231 by screws. At least two clamping blocks 232 are located on the side of the connecting plate 234 away from the edge of the support plate 231 and extend away from the edge of the support plate 231. A positioning space is formed between two adjacent clamping blocks 232. In this embodiment, the positioning unit includes two clamping blocks 232. The edge of the template 21 is provided with a positioning block adapted to the positioning space. When positioning the template 21, the positioning block is located in the positioning space, and the clamping block 232 abuts against the positioning block. The positioning unit also includes a clamping piece 233, which is located at the end of the clamping block 232 away from the connecting plate 234. The positioning block abuts against the clamping piece 233. Specifically, the distance between the clamping pieces 233 is slightly smaller than the distance between the clamping blocks 232, and the clamping piece 233 can elastically deform, thereby making the clamping piece 233 more stable in holding the positioning block. The template 21 has four positioning blocks, which are located at the four corners of the template 21 and extend away from each other. The four positioning blocks extend in parallel directions. When the positioning blocks are clamped in the positioning space, the position of the template 21 is fixed, and the first driving member 22 can drive the template 21 to move. The edge of the support plate 231 is connected to four positioning units that are adapted to the positioning blocks. The positioning blocks are inserted into the positioning space to position the template 21. At the same time, the template 21 is prevented from shaking and shifting during the movement of the template 21 driven by the first driving member 22. During the film lamination and pressing process, the template 21 is kept stable to avoid uneven film heating and lamination due to shaking, and to ensure accurate alignment between the film and the hot press plate 343. The edge of the support plate 231 has multiple connecting holes for connecting with the connecting plate 234, so that the position of the positioning unit can be adjusted. This allows the positioning unit to adjust its position according to the template 21 of different sizes, thereby achieving positioning of templates 21 of different sizes.

[0041] Reference Figure 4As shown, the hot pressing assembly 3 is pressed and adapted to the positioning frame 23. The hot pressing assembly 3 includes a second driving member 31 and a buffer pressing mechanism 34. The buffer pressing mechanism 34 is located above the moving path of the positioning frame 23. The buffer pressing mechanism 34 includes a connecting seat 341, a buffer unit, and a hot pressing plate 343. The second driving member 31 can be regarded as a linear hydraulic cylinder. The output end of the second driving member 31 is connected to the connecting seat 341, so that the second driving member 31 can drive the buffer pressing mechanism 34 to rise and fall. The hot pressing plate 343 is used to heat the film and press it into a sheet. The hot pressing plate 343 is connected to the side of the connecting seat 341 near the moving path of the positioning frame 23. The second driving member 31 can drive the hot pressing plate 343 to rise and fall, so that the hot pressing plate 343 can move towards the moving path near the positioning frame 23. The buffer unit is connected to the edge of the connecting seat 341, and the end of the buffer unit can abut against the base 1.

[0042] Reference Figure 4 and Figure 5 As shown, the irregular sheet film bonding and pressing device also includes a cover 4, which includes a receiving space. The bottom end of the cover 4 is connected to the top edge of the base 1. The hot pressing assembly 3 is located within the receiving space, and the positioning frame 23 can be moved into the receiving space by the drive of the first driving member 22. The hot pressing assembly 3 also includes a support rod 33 and a frame plate 32. The two ends of the support rod 33 are located at the end of the receiving space and on the base 1, respectively, and the bottom end of the support rod 33 is connected to the base 1 to fix the support rod 33. Four support rods 33 are provided in the receiving space. The four corners of the frame plate 32 are vertically connected to collars 35, which are sleeved on the support rods 33 to fix the position of the frame plate 32. The second driving member 31 is connected to the middle of the top side of the frame plate 32, and the output end of the second driving member 31 passes through the frame plate 32 and is connected to the connecting seat 341. By adjusting the position of the collar 35 on the support rod 33, the height of the frame plate 32 can be adjusted, which in turn allows for the adjustment of the height of the second drive component 31 and the hot press plate 343. Four guide posts are connected to the top of the connecting seat 341. These guide posts pass through the frame plate 32 and are slidably connected to it, thus ensuring a smoother lifting and lowering of the hot press plate 343.

[0043] Reference Figures 6 to 8As shown, the buffer unit includes a connecting rod 344, a mounting plate 342, and a support block 345. Both ends of the connecting rod 344 are connected to a connecting seat 341 and the mounting plate 342, respectively. One end of the mounting plate 342 is connected to the side wall of the hot press plate 343. The connecting rod 344 is inclined to make the mounting plate 342 more stable and improve the overall strength of the buffer unit. The mounting plate 342 extends away from the hot press plate 343 and is inclined. The support block 345 is connected to the end of the mounting plate 342 away from the connecting rod 344. The support block 345 is horizontal and extends towards the moving path of the hot press plate 343, thus creating an acute angle between the support block 345 and the mounting plate 342. The mounting plate 342 and the support block 345 are made of an elastically deformable material. The contact point between the support block 345 and the mounting plate 342 is arc-shaped; specifically, the cross-section of the contact point between the mounting plate 342 and the support block 345 has an S-shaped structure. As the hot press plate 343 descends, the support block 345 comes into contact with the base 1. At this point, the contact point between the mounting plate 342 and the support block 345 undergoes elastic deformation, and the S-shaped structure deforms in tandem, absorbing and buffering the impact load of the hot press. The arc-shaped design of the bottom side of the support block 345 when it comes into contact with the base 1 has a buffering effect.

[0044] The buffer unit also includes a buffer pad 346, which is made of elastic material. The buffer pad 346 is located on the side of the support block 345 near the mounting plate 342. A hollow groove 347 is provided on the side of the buffer pad 346 near the mounting plate 342, and an inner pad 348 is provided inside the hollow groove 347. The inner pad 348 is also made of elastic material. When the bottom side of the support block 345 abuts against the base 1 and the hot press plate 343 further descends, as the pressure increases, the contact point between the support block 345 and the mounting plate 342 bends, and the distance between the support block 345 and the mounting plate 342 gradually decreases until the buffer pad 346 abuts against the mounting plate 342. At this time, the buffer pad 346 is deformed under pressure, and the hollow groove 347 is squeezed and deformed, squeezing the inner pad 348, thereby further buffering the buffer pad 346 and the inner pad 348. Four buffer units are symmetrically arranged on opposite sides of the connecting seat 341. The S-shaped spring sheet structure at the junction of the mounting plate 342 and the support block 345, along with the buffer pad 346, hollow groove 347, and built-in pad 348, form a multi-level elastic buffer structure, which can reduce instantaneous impact pressure and prevent film damage and deformation of irregularly shaped sheets caused by excessive pressure from the hot press plate 343. This allows the hot press plate 343 to apply stable and uniform pressure to the film for hot pressing and bonding, ensuring that the irregularly shaped sheet and the film are fully fused and shaped, thereby improving the finished product qualification rate.

[0045] Reference Figure 9As shown, the roller pressing assembly 5 is used for pre-treatment of sheet films before pressing. The roller pressing assembly 5 includes a rotatable pressure roller 53, the sidewall of which can roll the film located at the feeding position. Specifically, the roller pressing assembly 5 includes a mounting frame 51 and a support rod 52. The two mounting frames 51 are respectively connected to the two ends of the opening on the sidewall of the cover 4, and the two mounting frames 51 are arranged opposite to each other. The two ends of the support rod 52 are connected to the mounting frames 51, and the pressure roller 53 is sleeved on the support rod 52 and rotatably connected to the support rod 52. During the movement of the positioning frame 23, the pressure roller 53 can abut against the film and roll the film. The pressure roller 53 is detachably connected to the support rod 52, so that pressure rollers 53 of different lengths and diameters can be replaced and sleeved on the support rod 52 according to the size and thickness of the irregular sheet and film. The first driving component 22 can drive the template 21 to move below the pressure roller 53 and form rolling contact with the film surface. As the template 21 continues to move, the pressure roller 53 rotates around the frame rod 52 to continuously and evenly roll the film surface, expelling the air between the film and the template 21, eliminating problems such as film wrinkles, curling edges, and looseness, ensuring that the film is in a highly flat state before hot pressing, and improving the flatness and density of the irregular sheet film bonding.

[0046] In use, the irregularly shaped sheet is first placed on the feeding position of the template 21, and the film is applied to the irregularly shaped sheet. Then, the first driving component 22 drives the positioning frame 23 to move towards the moving path of the hot press plate 343 until the positioning frame 23 moves to the hot pressing position. During the movement of the positioning frame 23, the pressure roller 53 abuts against the film and rolls the film. Then, the second driving component 31 drives the hot press plate 343 to move towards the positioning frame 23. At the same time, the hot press plate 343 is heated to the temperature required for film preheating until the hot press plate 343 moves to the preheating position. At this time, there is a gap between the hot press plate 343 and the film. The hot press plate 343 pauses briefly to preheat the film, allowing the film to preheat and melt. The film softens, then the hot press plate 343 rises and resets. After the positioning frame 23 resets, it moves to the hot press position again. During the movement of the positioning frame 23, the pressure roller 53 abuts against the film and rolls the film. At the same time, the hot press plate 343 heats to the temperature required for film application. Finally, the hot press plate 343 moves towards the positioning frame 23 until the hot press plate 343 abuts against the film and performs hot press application on the film. The buffer unit abuts against the base 1. At the same time, the distance between the support block 345 and the mounting plate 342 gradually decreases until the buffer pad 346 abuts against the mounting plate 342. After the film application is completed, the hot press plate 343 rises and resets. At the same time, the mounting plate 342, the buffer pad 346 and the built-in pad 348 elastically reset.

[0047] Reference Figure 12As shown, the present invention also provides a method for laminating and pressing irregularly shaped sheets with film. The method uses the aforementioned irregularly shaped sheet film laminating and pressing device to laminate irregularly shaped sheets with film, including the following steps: Step S1: The irregularly shaped sheet is placed in the feeding position, and the film is laminated onto the irregularly shaped sheet. When the pressure roller 53 is not compatible with the film and the irregularly shaped sheet, a pressure roller 53 that is compatible with both the film and the irregularly shaped sheet is replaced. Step S2: The positioning frame 23 moves towards the moving path of the hot press plate 343 until the positioning frame 23 moves to the hot pressing position. During the movement of the positioning frame 23, the pressure roller 53 abuts against the film and rolls the film, making the film flat and expelling air bubbles between the film and the irregularly shaped sheet. Step S3: The hot press plate 343 moves towards the direction of the positioning frame 23 until the hot press plate 343 moves to the preheating position. At this time, there is a gap between the hot press plate 343 and the film, and the hot press plate 343 preheats the film. S4: The hot press plate 343 is reset, and the positioning frame 23 moves to the hot press position again after being reset. During the movement of the positioning frame 23, the pressure roller 53 abuts against the film and rolls the film. Step S5: The hot press plate 343 moves towards the positioning frame 23 until the hot press plate 343 abuts against the film and performs hot pressing on the film. The buffer unit abuts against the base 1.

[0048] In step S3, the preheating step allows the hot press plate 343 to preheat and soften the film. Since air bubbles are easily left inside the film after preheating, in step S4, the positioning frame 23 moves again and works with the pressure roller 53 to vent the film. The pressure roller 53 performs a second rolling on the film in the molten and softened state, further squeezing out the air bubbles in the interlayer or particle gaps, preventing air bubbles from being trapped inside the film and forming defects. Finally, in step S5, the hot press plate 343 compacts and shapes the film, thus achieving a continuous completion of the preheating, venting, and pressing processes, effectively reducing defects such as air bubbles, delamination, and voids inside the film, and improving the density of the product. To completely remove air bubbles inside the film and between the film and the irregularly shaped sheet, the first driving component 22 can drive the film to move back and forth multiple times under the pressure roller 53. During the reciprocating movement of the template 21, the film can be rolled, leveled, and vented multiple times, undertaking both the leveling pretreatment before film pressing and the rolling and venting of the film.

[0049] This invention discloses a laminating and pressing device and method for irregularly shaped sheet films. Through the movable arrangement of the positioning frame 23, the pressure roller 53 can roll and contact the film. The pressure roller 53 continuously and uniformly rolls the film, expelling air between the film and the irregularly shaped sheet, and simultaneously flattening the film, eliminating problems such as wrinkles, curling edges, and looseness, ensuring the film is highly flat before hot pressing, and improving the flatness and density of the irregularly shaped sheet film lamination. The buffer unit, through its configuration, cushions the hot press plate 343 during the lamination and pressing process, reducing the instantaneous impact pressure of the hot press plate 343 on the irregularly shaped sheet, preventing film damage and deformation due to excessive pressure from the hot press plate 343, and improving the finished product qualification rate. The S-shaped spring structure at the junction of the mounting plate 342 and the support block 345, along with the buffer pad 346, hollow groove 347, and built-in pad 348, form a multi-level elastic buffer structure. This reduces instantaneous impact pressure and prevents film damage and deformation of irregularly shaped sheets due to excessive pressure from the hot press plate 343. The hot press plate 343 applies stable and uniform pressure to the film for hot pressing and bonding, ensuring full fusion and shaping of the irregularly shaped sheet and film, thus improving the finished product qualification rate. The hot press plate 343 first preheats the film to soften it, then uses the pressure roller 53 to vent the film, and finally uses the hot press plate 343 to compact and shape the film. This achieves a continuous process of preheating, venting, and pressing, effectively reducing defects such as air bubbles, delamination, and voids within the film and improving product density. The positioning unit positions the template 21, ensuring its stability and precise position during movement, film rolling, and film hot pressing, preventing loosening or misalignment.

[0050] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A device for bonding and pressing irregularly shaped sheet films, characterized in that, include: Base; The displacement assembly includes a first driving component and a positioning frame. The first driving component is connected to the base, and the output end of the first driving component is connected to the positioning frame. The positioning frame includes a material feeding position. A rolling assembly includes a rotatable pressure roller, the sidewalls of which are capable of rolling a film located at the feeding position; The hot pressing assembly includes a second driving member and a buffer pressing mechanism. The buffer pressing mechanism includes a connecting seat, a buffer unit, and a hot pressing plate. The output end of the second driving member is connected to the connecting seat. The hot pressing plate is connected to one side of the connecting seat near the moving path of the positioning frame, and the hot pressing plate can move towards the moving path near the positioning frame. The buffer unit is connected to the edge of the connecting seat, and the end of the buffer unit can abut against the base. The buffer unit includes a connecting rod, a mounting plate, and a support block. The two ends of the connecting rod are connected to the connecting seat and the mounting plate, respectively. The support block is connected to the end of the mounting plate away from the connecting rod and extends along the moving path close to the hot press plate. The contact position between the support block and the mounting plate is arc-shaped, and the support block can abut against the base. The buffer unit also includes a buffer pad, which is located on the side of the support block near the mounting plate. The side of the buffer pad near the mounting plate has a hollow groove, and an internal pad is provided in the hollow groove.

2. The irregular sheet film bonding and pressing device according to claim 1, characterized in that: It also includes a housing, which includes a receiving space, in which the hot pressing assembly is located, and the positioning frame is movable into the receiving space.

3. The irregular sheet film bonding and pressing device according to claim 2, characterized in that: The hot pressing assembly also includes a support rod and a frame plate. The two ends of the support rod are located at the end of the accommodating space and the base, respectively. The frame plate is connected to a collar, which is sleeved on the support rod. The second driving member is connected to the frame plate, and the connecting seat is slidably connected to the frame plate.

4. The irregular sheet film bonding and pressing device according to claim 1, characterized in that: The displacement component further includes a template, the positioning frame includes a support plate and a positioning unit, the support plate is connected to the output end of the first driving component, the positioning unit is connected to the support plate, the template is engaged with the positioning unit, and the material feeding position is located on the template.

5. The irregular sheet film bonding and pressing device according to claim 4, characterized in that: The positioning unit includes a connecting plate and clamping blocks. The connecting plate is connected to the edge of the support plate. At least two clamping blocks are located on one side of the connecting plate and extend away from the edge of the support plate. A positioning space is formed between two adjacent clamping blocks. The edge of the template is provided with positioning blocks, which are located within the positioning space.

6. The irregular sheet film bonding and pressing device according to claim 5, characterized in that: The positioning unit further includes a clamping piece, which is located at the end of the clamping block away from the connecting plate, and the positioning block abuts against the clamping piece.

7. The irregular sheet film bonding and pressing device according to claim 2, characterized in that: The roller pressing assembly includes a mounting frame and a support rod. The mounting frame is connected to the cover, and the support rod is connected to the mounting frame. The pressure roller is sleeved on the support rod and rotatably connected to the support rod.

8. A method for laminating and pressing irregularly shaped sheet films, characterized in that, The irregular sheet film lamination and pressing device according to any one of claims 1-7 is used to perform film lamination on irregular sheets, comprising the following steps: Step S1: Place the irregularly shaped sheet in the feeding position and apply the film to the irregularly shaped sheet; Step S2: The positioning frame moves along the moving path close to the hot press plate until the positioning frame moves to the hot press position. During the movement of the positioning frame, the pressure roller abuts against the film and rolls the film. Step S3: The hot press plate moves toward the positioning frame until it reaches the preheating position. At this time, there is a gap between the hot press plate and the film, and the hot press plate preheats the film. Step S4: The hot press plate is reset, and the positioning frame moves to the hot press position again after being reset. During the movement of the positioning frame, the pressure roller abuts against the film and rolls the film. Step S5: The hot press plate moves toward the positioning frame until it comes into contact with the film and heat-presses the film, and the buffer unit comes into contact with the base.

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