A composite apparatus for producing an in-mold decoration insert film for automobiles

Abstract

The application discloses a kind of composite equipment for producing car in-mold decoration insert film, it is related to composite material forming equipment technical field, to solve the technical problem that the conveying path of existing composite equipment is mostly fixed structure, it is difficult to flexibly adjust according to film layer number, including bottom plate, transmission cabinet, support plate, amplification mechanism, conveying assembly and buffer assembly.The application can flexibly switch film conveying state by the insertion fitting of first transmission block and second transmission block in amplification mechanism, combined with the merging or separation design of first half cylinder and second half cylinder: when merging, form rotatable cylindrical shape to adapt to few-layer film efficient conveying, when separating, form staggered path by linkage locking of outer cylinder and inner cylinder to meet the production needs of multi-layer film, both realize compatible production of different layer number car INS film, improve equipment versatility, and through the cooperation of structure self-locking and rotation function, ensure the stability of film conveying under different paths, reduce damage and interference in conveying process.

Description

Technical Field

[0001] This invention relates to the field of composite material molding equipment technology, and more specifically, to a composite equipment for producing in-mold decorative insert films for automobiles. Background Technology

[0002] The conveying paths of existing automotive INS film laminating equipment are mostly fixed structures, which cannot be flexibly adjusted according to the number of film layers: equipment designed for few-layer films is prone to interlayer friction and stacking interference when producing multi-layer films due to its single conveying channel; while equipment specifically developed for multi-layer films will have low conveying efficiency due to path redundancy when producing few-layer films. This "one layer, one equipment" situation requires companies to invest a lot of money to purchase equipment of different specifications, and they need to readjust when changing production, which seriously restricts production flexibility.

[0003] In traditional composite equipment, multilayer film transport often relies on simple guide rollers for support, lacking a targeted path constraint structure. When the number of film layers increases, the fixed spacing between the guide rollers can easily lead to interlayer misalignment, wrinkles, and even scratches due to friction. When transporting fewer film layers, if there are grooves or gaps on the surface of the guide rollers, the film edges can easily tear. In addition, some equipment does not have a reliable locking or rotation adjustment mechanism, and component shaking can easily occur when switching paths, further increasing the risk of damage during film transport.

[0004] Existing equipment requires manual adjustment of guide roller positions and tension parameters when switching between multilayer and few-layer film production. This operation is cumbersome and lacks precision, resulting in long changeover times and low production efficiency. Furthermore, due to the lack of a dynamically adaptable conveyor path design, multilayer films are prone to uneven bonding during lamination due to tension imbalances, while few-layer films may experience stretching deformation due to excessively fast conveying. Ultimately, this affects the surface smoothness and structural strength of the INS film, making it difficult to meet the high-precision quality requirements of automotive interior trim materials. Therefore, we propose a lamination equipment for producing automotive in-mold trim insert films. Summary of the Invention

[0005] The purpose of this invention is to provide a composite equipment for producing automotive in-mold decorative insert films, in order to solve the technical problem that the conveying path of existing composite equipment is mostly a fixed structure, which makes it difficult to flexibly adjust according to the number of film layers.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a composite equipment for producing automotive in-mold decorative insert film, comprising a base plate, a transmission cabinet and a support plate arranged on one side of the base plate, an amplification mechanism arranged between the transmission cabinet and the support plate, a conveying assembly and a buffer assembly, wherein the amplification mechanism includes a plurality of second transmission blocks slidably arranged between the transmission cabinet and the support plate, and a plurality of first transmission blocks fixedly arranged between the transmission cabinet and the support plate, wherein the first transmission blocks and the second transmission blocks are plugged into each other, wherein a first semi-cylinder is movably arranged between each pair of opposite first transmission blocks, and a second semi-cylinder is movably arranged between each pair of opposite second transmission blocks, wherein the side surfaces of the plurality of first transmission blocks and the second transmission blocks are provided with insertion holes, and the end surfaces of the plurality of first semi-cylinders and the second semi-cylinders are provided with movable holes, wherein the movable holes are axially corresponding to the insertion holes, and each movable hole contains an outer cylinder and an inner cylinder that can move in opposite directions;

[0007] The first and second semi-cylinders can be combined or separated. When combined, they form a cylindrical conveying film; when separated, they are staggered to different horizontal planes to increase the conveying path. When closed, the two inner cylinders contact and press, and the outer cylinder moves out of the insertion hole, making the cylindrical shape rotatable. When separated, the inner cylinder moves outward so that the outer cylinder inserts into the insertion hole, achieving fixation to maintain stable conveying. This invention, through the plug-in adaptation of the first and second transmission blocks in the expansion mechanism, combined with the design of combining or separating the first and second semi-cylinders, can flexibly switch the film conveying state: when combined, a rotatable cylindrical shape is formed to adapt to the efficient conveying of fewer layers of film; when separated, the linkage locking of the outer and inner cylinders forms a staggered path to meet the production needs of multilayer films. This not only achieves compatible production of automotive INS films with different numbers of layers and improves the versatility of the equipment, but also ensures the stability of film conveying under different paths through the synergy of structural self-locking and rotation functions, reducing damage and interference during the conveying process, and providing a reliable guarantee for the efficient production of high-quality composite films.

[0008] Preferably, a transmission frame is arranged on the other side of the base plate, and a pressure roller and a heating roller are rotatably connected between the transmission cabinet and the support plate. A winding roller is rotatably connected to the inner walls on both sides of the transmission frame.

[0009] Preferably, the amplification mechanism further includes several unwinding rollers, all of which are driven and adapted between the transmission cabinet and the support plate. Several limiting rods are fixedly connected between the transmission cabinet and the support plate. Several inclined grooves are linearly arrayed on one side of the transmission cabinet, and several inclined holes are linearly arrayed on one side of the support plate. Two tracks are fixedly connected to one side of the support plate, and a guide clamp with a pneumatic slider is slidably adapted between the two tracks.

[0010] Preferably, a plurality of first transmission blocks are fixedly connected inside the inclined groove and the inclined hole, a plurality of second transmission blocks are slidably connected inside the inclined groove and the inclined hole, a movable plate is fixedly connected to the side of each of the second transmission blocks near the guide clamp, and the movable plate is slidably adapted to the inside of the guide clamp, a stop plate is fixedly connected to the inner wall of each movable hole, and the outer cylinder is slidably sleeved on the inner wall of the movable hole and also slidably sleeved on the surface of the stop plate, a first rack is arranged on the inner wall of the outer cylinder, the inner cylinder is inserted into the hole on the stop plate, a second rack is arranged on the surface of the inner cylinder, a first spring is fixedly connected to one side of each stop plate, and the first spring is fixedly connected to the end of the inner cylinder, a drive gear is rotatably arranged on the side surface of each stop plate, and the drive gear meshes with the first rack and the second rack.

[0011] Preferably, the conveying assembly includes several baffles, all of which are rotatably connected to the inner walls on both sides of the through holes on the first and second semi-cylinders.

[0012] Preferably, each of the inner walls on both sides of the first and second semi-cylinders is fixedly connected to two limiting frames, and a second spring is sleeved on the surface of the support rod of each limiting frame.

[0013] Preferably, a first support block is slidably sleeved on the surface of the support rod on each of the limiting frames, and a conveying roller is rotatably connected between each pair of the first support blocks. A pull rod is rotatably sleeved at both ends of each conveying roller, and the end of the pull rod is rotatably connected to one side of the baffle.

[0014] Preferably, the buffer assembly includes several limiting holes, which are linearly arrayed on one side of the support plate. Several buffer cylinders are rotatably connected to the transmission cabinet and the support plate in a linear array. Each buffer cylinder has a fixed plate at its end, which is rotatably connected inside the limiting hole. The end of the buffer cylinder passes through one side of the support plate. Each buffer cylinder has vertical holes symmetrically arranged on its side surface.

[0015] Preferably, each of the buffer cylinders has a transverse hole on its side surface, and the inner walls on both sides of each vertical hole are symmetrically connected to a bearing rod. The inner walls on both sides of each buffer cylinder are fixedly connected to two arc-shaped frames in a ring array.

[0016] Preferably, a third spring is movably sleeved on the surface of each of the arc-shaped frame support rods, and a second support block is slidably connected to the surface of each of the arc-shaped frame support rods. The third spring and the second support block are elastically matched, and a buffer roller is rotatably connected between the two second support blocks.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention, through the plug-in adaptation of the first and second transmission blocks in the amplification mechanism, combined with the merging or separation design of the first and second semi-cylinders, can flexibly switch the film conveying state: when merged, a rotatable cylindrical shape is formed to adapt to the efficient conveying of fewer layers of film; when separated, the linkage locking of the outer and inner cylinders forms a staggered path to meet the production needs of multilayer films. This not only realizes the compatible production of automotive INS films with different numbers of layers and improves the versatility of the equipment, but also ensures the stability of film conveying under different paths through the synergy of structural self-locking and rotation functions, reducing damage and interference during the conveying process, and providing a reliable guarantee for the efficient production of high-quality composite films.

[0019] 2. This invention, through the flexible adjustment of the amplification mechanism, can dynamically adjust the film conveying path according to the layer requirements of automotive INS films: when producing multilayer films, the first and second semi-cylinders are separated and fixed, forming independent channels to avoid interlayer contact; when producing single-layer films, the two are combined into a rotating cylinder to reduce conveying resistance. Combined with the limiting rod for guiding the separation of multilayer films, it effectively adapts to the production of INS films with different layer counts, meeting diverse specification requirements without equipment replacement, significantly improving the equipment's versatility and production flexibility.

[0020] 3. This invention utilizes the synergistic action of the conveying component and the amplification mechanism. During the merging of the semi-cylinders, the conveying roller and the baffle form a complete cylindrical surface, preventing the film from being scratched by the groove. During separation, a spring-driven adaptive channel is formed to ensure smooth film conveying. The buffer component switches between vertical and horizontal holes via a rotatable buffer cylinder, and, in conjunction with the elastic buffer roller, adjusts the tension in real time to reduce wrinkles. With this dual protection, the damage rate of the film during the conveying process before lamination is significantly reduced, providing a high-quality substrate for subsequent heating and pressurization lamination, and improving the surface flatness and structural consistency of the finished INS film.

[0021] 4. This invention uses a pneumatic slider to drive the guide clamp, enabling rapid switching between merging and separating of the semi-cylinders. Combined with the automatic locking or unlocking mechanism of the inner and outer cylinders, manual adjustment of the transmission components is unnecessary, reducing operational steps. The rotation adjustment of the buffer cylinder is linked to the state of the semi-cylinders, ensuring smooth film delivery during path switching and avoiding downtime for debugging. The overall structure achieves automated coordination from path adjustment and tension buffering to composite winding, shortening the changeover time for different product specifications, improving continuous production efficiency, and reducing the impact of human error on product quality. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 For the present invention Figure 1 A magnified structural diagram at point A in the diagram.

[0024] Figure 3 This is a schematic cross-sectional view of the overall structure of the present invention.

[0025] Figure 4 This is a schematic diagram of a partial three-dimensional structure of the amplification mechanism of the present invention.

[0026] Figure 5 This is a schematic cross-sectional view of the amplification mechanism structure of the present invention.

[0027] Figure 6 This is a schematic cross-sectional view of the end structure of the first semi-cylinder of the present invention.

[0028] Figure 7 This is a schematic diagram of the three-dimensional exploded structure of the amplification mechanism of the present invention.

[0029] Figure 8 This is a three-dimensional partial structural diagram of the conveying component of the present invention.

[0030] Figure 9 This is a partially enlarged three-dimensional structural diagram of the first semi-cylinder of the present invention, showing the internal structure of the movable hole.

[0031] Figure 10 This is a schematic diagram of the three-dimensional partially exploded structure of the amplification mechanism of the present invention, to show the internal structure of the movable hole.

[0032] Figure 11 This is a schematic cross-sectional view of the three-dimensional exploded structure of the outer cylinder of the present invention.

[0033] Figure 12 This is a three-dimensional structural diagram of the buffer component of the present invention.

[0034] Figure 13 This is a schematic cross-sectional view of the buffer assembly of the present invention.

[0035] Figure 14 This is a three-dimensional partial structural diagram of the buffer assembly of the present invention, showing the internal structure of the buffer cylinder.

[0036] Figure 15 This is a schematic diagram of the three-dimensional exploded structure of the buffer component of the present invention.

[0037] Figure 16 This is a schematic diagram of the buffer component in the separate use state of the present invention.

[0038] Figure 17 This is a schematic diagram of the vertical hole structure of the buffer component of the present invention in use.

[0039] Figure 18 This is a schematic diagram of the working state of the transverse hole of the buffer component of the present invention.

[0040] The following are the labels in the diagram: 1. Base plate; 11. Transmission cabinet; 12. Support plate; 13. Transmission frame; 14. Pressure roller; 15. Heating roller; 16. Take-up roller; 2. Expanding mechanism; 21. Unwinding roller; 22. Limiting rod; 23. Inclined groove; 24. Inclined hole; 25. Track; 26. Guide clamp; 27. First transmission block; 28. Second transmission block; 281. Movable plate; 29. ​​Insertion hole; 210. First half-cylinder; 211. Second half-cylinder; 212. Movable hole; 213. Abutment plate; 214. Outer cylinder; 2141, First rack; 215, Inner cylinder; 2151, Second rack; 216, First spring; 217, Drive gear; 3, Conveying assembly; 31, Baffle; 32, Limiting frame; 33, Second spring; 34, First support block; 35, Conveying roller; 36, Tie rod; 4, Buffer assembly; 41, Limiting hole; 42, Buffer cylinder; 421, Insert plate; 422, Vertical hole; 423, Horizontal hole; 43, Bearing rod; 44, Arc frame; 45, Third spring; 46, Second support block; 47, Buffer roller. Detailed Implementation

[0041] like Figures 1-7 , Figures 9-11 and Figure 16 As shown, the present invention relates to a composite equipment for producing automotive in-mold decorative insert film, comprising a base plate 1, a transmission cabinet 11 and a support plate 12 arranged on one side of the base plate 1, a transmission frame 13 arranged on the other side of the base plate 1, an expansion mechanism 2 arranged between the transmission cabinet 11 and the support plate 12, a conveying assembly 3 and a buffer assembly 4.

[0042] It is worth noting that the transmission cabinet 11 contains transmission components such as a transmission gear set, chain, and motor, which will not be described in detail here, and are used to drive the overall operation of the device.

[0043] A pressure roller 14 and a heating roller 15 are rotatably connected between the transmission cabinet 11 and the support plate 12, and a winding roller 16 is rotatably connected to the inner walls on both sides of the transmission frame 13.

[0044] The expansion mechanism 2 includes several unwinding rollers 21, each of which is driven and adapted between the transmission cabinet 11 and the support plate 12. Several limiting rods 22 are fixedly connected between the transmission cabinet 11 and the support plate 12. Several inclined grooves 23 are linearly arrayed on one side of the transmission cabinet 11, and several inclined holes 24 are linearly arrayed on one side of the support plate 12. Two rails 25 are fixedly connected to one side of the support plate 12, and a guide clamp 26 with a pneumatic slider is slidably adapted between the two rails 25. The transmission cabinet 11 and the support plate 12 are linearly arrayed and fixedly connected. A plurality of first transmission blocks 27 are fixedly arranged, and a plurality of second transmission blocks 28 are arranged in a linear array between the transmission cabinet 11 and the support plate 12. The first transmission blocks 27 and the second transmission blocks 28 are plugged into and adapted to each other. The first transmission blocks 27 and the second transmission blocks 28 are both arranged inside the inclined groove 23 and the inclined hole 24. Each of the plurality of second transmission blocks 28 has a movable plate 281 fixedly connected to the side near the guide clamp 26, and the movable plate 281 is slidably adapted to the inside of the guide clamp 26. The side surfaces of the plurality of first transmission blocks 27 and second transmission blocks 28 are all provided with The insertion hole 29 has a first semi-cylinder 210 movably arranged between each pair of first transmission blocks 27, and a second semi-cylinder 211 movably arranged between each pair of second transmission blocks 28. The first semi-cylinders 210 and 211 converge to form a cylinder. Each end surface of the first semi-cylinder 210 and 211 has a movable hole 212, which is coaxial with the insertion hole 29 laterally. A stop piece 213 is fixedly connected to the inner wall of each movable hole 212, and an outer cylinder is slidably sleeved on the inner wall of each movable hole 212. 214, and the outer cylinder 214 is slidably sleeved on the surface of the abutment 213. The inner wall of the outer cylinder 214 is provided with a first rack 2141. The inner cylinder 215 is inserted into the hole of the abutment 213. The surface of the inner cylinder 215 is provided with a second rack 2151. A first spring 216 is fixedly connected to one side of each abutment 213. The first spring 216 is fixedly connected to the end of the inner cylinder 215. A drive gear 217 is rotatably arranged on the side surface of each abutment 213. The drive gear 217 is meshed and matched with the first rack 2141 and the second rack 2151.

[0045] It is worth noting that the unwinding roller 21 and the limiting rod 22 are placed according to the number of layers of the automotive INS film, which can adapt to the production needs of various specifications of automotive INS film. Among them, the limiting rod 22 can separate the multi-layer film and prevent the layers from contacting each other, thus affecting the production of automotive INS film.

[0046] Specifically, during the lamination of multilayer automotive films, a pneumatic slider moves the guide clamp 26 to one side, causing the second transmission block 28 to move and separate from the first transmission block 27. At this time, the first spring 216 applies a force to the inner cylinder 215, causing the inner cylinder 215 to move to one side. Through the engagement and rotation of the drive gear 217, the outer cylinder 214 moves in the opposite direction to the inner cylinder 215 and is inserted into the insertion hole 29 and the movable hole 212 respectively. This fixes the first semi-cylinder 210 and the second semi-cylinder 211, increasing the path for the composite film and preventing the first semi-cylinder 210 and the second semi-cylinder 211 from separating. Rotation affects the transport of the composite film. When the number of composite layers in an automotive film is small, a pneumatic slider moves the guide clamp 26 to one side, causing the second transmission block 28 to move and merge with the first transmission block 27. The first half-cylinder 210 and the second half-cylinder 211 merge to form a cylinder. The two inner cylinders 215 are squeezed against each other and driven by the meshing of the drive gear 217, causing the inner cylinder 215 and the outer cylinder 214 to move towards each other. This allows the cylinder formed by the first half-cylinder 210 and the second half-cylinder 211 to rotate, adjusting the film transport path according to the number of composite layers in the automotive film.

[0047] This invention, through the flexible adjustment of the amplification mechanism 2, can dynamically adjust the film conveying path according to the layer requirements of automotive INS films: when producing multilayer films, the first semi-cylinder 210 and the second semi-cylinder 211 are separated and fixed, forming an independent channel to avoid interlayer contact; when producing single-layer films, the two are combined into a rotating cylinder to reduce conveying resistance. Combined with the limiting rod 22 for guiding the separation of multilayer films, it effectively adapts to the production of INS films with different layer numbers, meeting diverse specification requirements without changing equipment, significantly improving the equipment's versatility and production flexibility.

[0048] like Figures 5-8 and Figure 16 As shown, the conveying assembly 3 includes several baffles 31, which are rotatably connected to the inner walls of the through holes on both sides of the first half-pillar 210 and the second half-pillar 211. Two limiting frames 32 are fixedly connected to the inner walls on both sides of each first half-pillar 210 and the second half-pillar 211. A second spring 33 is sleeved on the surface of the support rod on each limiting frame 32. A first support block 34 is slidably sleeved on the surface of the support rod on each limiting frame 32. A conveying roller 35 is rotatably connected between each pair of first support blocks 34. A pull rod 36 is rotatably sleeved at both ends of each conveying roller 35, and the end of the pull rod 36 is rotatably connected to one side of the baffle 31.

[0049] Specifically, when the first half-cylinder 210 and the second half-cylinder 211 merge, they are squeezed relative to the two conveying rollers 35, causing the conveying rollers 35 to move to one side. Through the force of the pull rod 36, the baffle 31 rotates axially, forming a complete cylinder with the merged first half-cylinder 210 and the second half-cylinder 211. This avoids the problem of the cylindrical surface having grooves or other defects that could scratch the surface of the automotive film during transport. When the first half-cylinder 210 and the second half-cylinder 211 separate, the conveying roller 35 moves under the force of the second spring 33 and is driven by the pull rod 36, causing the baffle 31 to rotate axially inward, forming a channel. This channel, in conjunction with the conveying roller 35, enables the transport of automotive film.

[0050] This invention utilizes the synergistic action of the conveying component 3 and the amplification mechanism 2. During the merging of the semi-cylinders, the conveying roller 35 and the baffle 31 form a complete cylindrical surface, preventing the film from being scratched by the groove. During separation, a spring-driven adaptation channel is formed to ensure smooth film transport. The buffer component 4, through a rotatable buffer cylinder 42, switches between vertical holes 422 and horizontal holes 423, and works with the elastic buffer roller 47 to adjust tension in real time, reducing wrinkles. With this dual protection, the damage rate of the film during transport before lamination is significantly reduced, providing a high-quality substrate for subsequent heating and pressurization lamination, and improving the surface smoothness and structural consistency of the finished INS film.

[0051] like Figure 2 , Figures 12-15 and Figures 17-18 As shown, the buffer assembly 4 includes several limiting holes 41, which are linearly arrayed on one side of the support plate 12. Several buffer cylinders 42 are rotatably connected to the transmission cabinet 11 and the support plate 12 in a linear array. Each buffer cylinder 42 has a fixedly connected insert plate 421 at its end, which is rotatably connected inside the limiting hole 41. The end of the buffer cylinder 42 passes through one side of the support plate 12. Each buffer cylinder 42 has symmetrically arranged vertical holes 422 on its side surface. Each surface is provided with a horizontal hole 423. Each vertical hole 422 has a symmetrical structure on both sides of its inner wall with a rotatable support rod 43. Each buffer cylinder 42 has two arc-shaped frames 44 fixedly connected in a ring array on both sides of its inner wall. Each arc-shaped frame 44 has a third spring 45 movably sleeved on the surface of its support rod. Each arc-shaped frame 44 has a second support block 46 slidably connected on the surface of its support rod. The third spring 45 and the second support block 46 are elastically matched. A buffer roller 47 is rotatably connected between the two second support blocks 46.

[0052] Specifically, when the first half-cylinder 210 separates from the second half-cylinder 211, the automotive film composite path increases. By rotating the buffer cylinder 42, the position of the vertical hole 422 on its surface corresponds to the film path. The automotive film passes through the vertical hole 422, and the buffer roller 47 has an elastic feature due to the third spring 45, which buffers the tension of the automotive film. When the first half-cylinder 210 and the second half-cylinder 211 merge, the buffer cylinder 42 is rotated so that the position of the transverse hole 423 on its surface corresponds to the film path. When the film passes through the transverse hole 423, the buffer roller 47 buffers it.

[0053] This invention uses a pneumatic slider to drive the guide clamp 26, enabling rapid switching between merging and separating the semi-cylinders. Combined with the automatic locking or unlocking mechanisms of the inner cylinder 215 and outer cylinder 214, manual adjustment of the transmission components is unnecessary, reducing operational steps. The rotation adjustment of the buffer cylinder 42 is linked to the semi-cylinder state, ensuring smooth film delivery during path switching and avoiding downtime for debugging. The overall structure achieves automated coordination from path adjustment and tension buffering to composite winding, shortening the changeover time for different product specifications, improving continuous production efficiency, and reducing the impact of human error on product quality.

[0054] Working Principle: This embodiment provides a laminating device for producing automotive in-mold decorative insert films. First, an unwinding roller 21 is installed according to the number of layers of the automotive INS film, and the automotive film is placed on its surface for lamination. When the number of layers of the automotive INS film is large, an external control system first drives a pneumatic slider to move a guide clamp 26. A movable plate 281 slides inside the guide clamp 26, causing several second transmission blocks 28 to slide within inclined grooves 23 and inclined holes 24. The second transmission blocks 28 are misaligned with the first transmission block 27. When the first semi-cylinder 210 and the second semi-cylinder 211 separate, a force is applied to the inner cylinder 215 by a first spring 216, causing the inner cylinder 215 to move outward. This movement is further facilitated by a drive gear 217, causing the outer cylinder to move outward. The cylinder 214 is inserted into the insertion hole 29, thereby fixing the first semi-cylinder 210 to the first transmission block 27 and the second semi-cylinder 211 to the second transmission block 28. At the same time, during separation, the second spring 33 applies a force to the conveying roller 35, causing the conveying roller 35 to move, and applies a pulling force to the baffle 31 through the pull rod 36, causing the baffle 31 to rotate axially and form a channel. The buffer cylinder 42 rotates, causing the vertical hole 422 to correspond to the film path position. The automotive film passes through the unwinding roller 21 through the first semi-cylinder 210 or the second semi-cylinder 211 to form a channel, moves out from the vertical hole 422, and enters between the pressure roller 14 and the heating roller 15. The pressure roller 14 applies a force to the film and heats it, causing the film to be laminated. Then, the laminated film is wound up by the winding roller 16.

[0055] When the number of layers of the automotive INS film is small, the guide clamp 26 is first driven by the pneumatic slider to move the second half-cylinder 211, so that it merges with the first half-cylinder 210. The two inner cylinders 215 contact and squeeze each other. Then, the drive gear 217 meshes with the first rack 2141 and the second rack 2151 respectively, causing the inner cylinder 215 and the outer cylinder 214 to move towards each other. The outer cylinder 214 moves out of the insertion hole 29, so that the cylinder formed by the second half-cylinder 211 and the first half-cylinder 210 can rotate and squeeze relative to the two conveying rollers 35. The baffle 31 is rotated axially by the pull rod 36, so that the cylindrical surface is complete. At the same time, the buffer cylinder 42 is rotated so that the vertical hole 422 corresponds to the film path position. The film is bonded to the cylindrical surface and conveyed. Then, it passes through the vertical hole 422 and enters between the pressure roller 14 and the heating roller 15 for lamination. Finally, it is wound on the surface of the take-up roller 16.

[0056] When the film passes through the vertical hole 422 or the horizontal hole 423, the third spring 45 applies force to the buffer roller 47, which in turn applies force to the film surface, reducing wrinkles on the surface. The third spring 45 can also buffer the tension on the film surface.

[0057] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A composite device for producing automotive in-mold decorative insert film, comprising a base plate (1), a transmission cabinet (11) and a support plate (12) arranged on one side of the base plate (1), an expansion mechanism (2) arranged between the transmission cabinet (11) and the support plate (12), a conveying assembly (3), and a buffer assembly (4), characterized in that, The amplification mechanism (2) includes several second transmission blocks (28) slidably arranged between the transmission cabinet (11) and the support plate (12), and several first transmission blocks (27) fixedly arranged between the transmission cabinet (11) and the support plate (12). The first transmission blocks (27) and the second transmission blocks (28) are plugged into each other. A first half-cylinder (210) is movably arranged between each pair of first transmission blocks (27), and a second half-cylinder (211) is movably arranged between each pair of second transmission blocks (28). Insertion holes (29) are opened on the side surfaces of several first transmission blocks (27) and second transmission blocks (28). Movable holes (212) are opened on the end surfaces of several first half-cylinders (210) and second half-cylinders (211). The movable holes (212) are axially corresponding to the insertion holes (29). An outer cylinder (214) and an inner cylinder (215) that can move in opposite directions are arranged inside each movable hole (212). The first half-cylinder (210) and the second half-cylinder (211) can be combined or separated. When combined, they form a cylindrical conveying film. When separated, they form an independent channel to avoid interlayer contact. When closed, the two inner cylinders (215) contact and squeeze, and the outer cylinder (214) moves out from the insertion hole (29). The cylindrical shape can rotate. When separated, the inner cylinder (215) moves outward so that the outer cylinder (214) is inserted into the insertion hole (29) to achieve fixation and maintain stable conveying.

2. The composite equipment for producing automotive in-mold decorative insert films according to claim 1, characterized in that, A transmission frame (13) is arranged on the other side of the base plate (1). A pressure roller (14) and a heating roller (15) are rotatably connected between the transmission cabinet (11) and the support plate (12). A winding roller (16) is rotatably connected to the inner walls on both sides of the transmission frame (13).

3. The composite equipment for producing automotive in-mold decorative insert films according to claim 2, characterized in that, The amplification mechanism (2) also includes several unwinding rollers (21), which are all driven and adapted between the transmission cabinet (11) and the support plate (12). Several limiting rods (22) are fixedly connected between the transmission cabinet (11) and the support plate (12). Several inclined grooves (23) are opened in a linear array on one side of the transmission cabinet (11), and several inclined holes (24) are opened in a linear array on one side of the support plate (12). Two tracks (25) are fixedly connected to one side of the support plate (12), and a guide clamp (26) with a pneumatic slider is slidably adapted between the two tracks (25).

4. A composite equipment for producing automotive in-mold decorative insert films according to claim 3, characterized in that, Several first transmission blocks (27) are fixedly connected inside the inclined groove (23) and inclined hole (24), several second transmission blocks (28) are slidably connected inside the inclined groove (23) and inclined hole (24), several second transmission blocks (28) are fixedly connected to a movable plate (281) on the side of the guide clamp (26) of several second transmission blocks (28), and the movable plate (281) is slidably adapted to the inside of the guide clamp (26), each of the movable holes (212) is fixedly connected to a stop plate (213), and the outer cylinder (214) is slidably sleeved on the inner wall of the movable hole (212), and the outer cylinder (214) is slidably sleeved on the inner wall of the movable hole (212). The outer cylinder (214) has a first rack (2141) arranged on the inner wall of the outer cylinder (214), and the inner cylinder (215) is inserted into the hole of the outer cylinder (213). The inner cylinder (215) has a second rack (2151) arranged on its surface. A first spring (216) is fixedly connected to one side of each outer cylinder (213), and the first spring (216) is fixedly connected to the end of the inner cylinder (215). A drive gear (217) is rotatably arranged on the side surface of each outer cylinder (213), and the drive gear (217) meshes with the first rack (2141) and the second rack (2151).

5. A composite equipment for producing automotive in-mold decorative insert films according to claim 4, characterized in that, The conveying assembly (3) includes several baffles (31), and the several baffles (31) are rotatably connected to the inner walls on both sides of the through hole on the first half-cylinder (210) and the second half-cylinder (211).

6. A composite equipment for producing automotive in-mold decorative insert films according to claim 5, characterized in that, Two limiting frames (32) are fixedly connected to the inner walls on both sides of each of the first half-cylinder (210) and the second half-cylinder (211), and a second spring (33) is sleeved on the surface of the support rod of each limiting frame (32).

7. A composite equipment for producing automotive in-mold decorative insert films according to claim 6, characterized in that, Each of the limiting frames (32) has a first support block (34) slidably sleeved on the surface of the support rod. A conveying roller (35) is rotatably connected between each pair of first support blocks (34). Each of the conveying rollers (35) has a pull rod (36) rotatably sleeved at both ends, and the end of the pull rod (36) is rotatably connected to one side of the baffle (31).

8. A composite equipment for producing automotive in-mold decorative insert films according to claim 7, characterized in that, The buffer assembly (4) includes several limiting holes (41), which are arranged in a linear array on one side of the support plate (12). Several buffer cylinders (42) are rotatably connected between the transmission cabinet (11) and the support plate (12) in a linear array. Each buffer cylinder (42) is fixedly connected to an insert plate (421) at its end, and the insert plate (421) is rotatably connected inside the limiting hole (41). The end of the buffer cylinder (42) passes through one side of the support plate (12). Each buffer cylinder (42) has a vertical hole (422) symmetrically arranged on its side surface.

9. A composite equipment for producing automotive in-mold decorative insert films according to claim 8, characterized in that, Each of the buffer cylinders (42) has a transverse hole (423) on its side surface. Each of the vertical holes (422) has a symmetrical structure on both sides of its inner wall with a rotatable support rod (43). Each of the buffer cylinders (42) has two arc-shaped frames (44) fixedly connected in a ring array on both sides of its inner wall.

10. A composite equipment for producing automotive in-mold decorative insert films according to claim 9, characterized in that, A third spring (45) is movably sleeved on the surface of the support rod of each of the arc-shaped frames (44), and a second support block (46) is slidably connected to the surface of the support rod of each of the arc-shaped frames (44). The third spring (45) and the second support block (46) are elastically adapted to each other, and a buffer roller (47) is rotatably connected between the two second support blocks (46).

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