A hemming device for laser composite film processing

Abstract

The present invention belongs to the field of film processing equipment, and provides a hemming device for laser composite film processing, which includes a workbench. Two first driving rollers, two second driving rollers, two third driving rollers and two fourth driving rollers are sequentially and rotatably installed on the workbench. The two first driving rollers, the two second driving rollers, the two third driving rollers and the two fourth driving rollers are all symmetrically arranged with respect to the central plane of the workbench. By providing the first driving roller, the second driving roller, the third driving roller and the fourth driving roller with included angles of 45°, 90°, 135° and 180° in sequence, the edges of the laser composite film are deformed in sequence at different angles, so that hemming operation can be realized. The material is fed on one side of the workbench and collected on the other side. After the laser composite film passes through the first driving roller, the second driving roller, the third driving roller and the fourth driving roller, hemming can be realized. This device can perform continuous processing, greatly improving the processing efficiency.

Description

Technical Field

[0001] The present invention belongs to the field of film processing equipment, and particularly relates to a hemming device for laser composite film processing. Background Art

[0002] Laser composite films generally adopt computer dot lithography technology, 3D true color holographic technology, multiple and dynamic imaging technology, etc. Through die stamping, holographic images with rainbow dynamic and three-dimensional effects are transferred to PET, BOPP, PVC or coated substrates, and then through methods such as lamination, hot stamping, and transfer, a certain laser effect can be obtained on the surface of commodity packaging.

[0003] When using laser composite film to package objects, the edge part of the required packaging film needs to have strong tensile strength. Before using the laser composite film for packaging, the edge of the laser composite film is often subjected to hemming and thickening treatment.

[0004] In view of the above technical problems, the applicant has retrieved some prior arts. For example, a film hemming device in a Chinese invention patent with the patent publication number CN112060554B folds the edge of the film through an adsorption mechanism, a support mechanism, a hemming mechanism, and a positioning mechanism. However, the raw material processed by it is a whole piece of cut film. After hemming, the film needs to be replaced and then hemmed again, resulting in its inability to continuously hem the film and low processing efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a hemming device for laser composite film processing, aiming to solve the technical problem in the prior art that the film cannot be continuously hemmed.

[0006] The present invention is realized as follows. A hemming device for laser composite film processing includes a workbench. Two first driving rollers, two second driving rollers, two third driving rollers, and two fourth driving rollers are sequentially and rotatably installed on the workbench. The two first driving rollers, two second driving rollers, two third driving rollers, and two fourth driving rollers are all symmetrically arranged with respect to the central plane of the workbench. The distances between the two first driving rollers, two second driving rollers, two third driving rollers, and two fourth driving rollers are all less than the width of the laser composite film. Moreover, the angles between the axes of the first driving roller, the second driving roller, the third driving roller, and the fourth driving roller and the upper surface of the workbench are 45°, 90°, 135°, and 180° in sequence, so that the edge of the laser composite film laid flat on the workbench is gradually flipped by 180°, realizing the hemming of the laser composite film.

[0007] Further technical solution: the workbench is also equipped with a flattening mechanism, the flattening mechanism includes a second door frame fixedly connected to the workbench, the second door frame is threadedly connected with a second adjusting screw, the second adjusting screw is rotatably connected with a lifting cross bar at one end close to the workbench, the lifting cross bar is fixedly connected with a second guide rod, the second guide rod is passed through a pipe and slidably installed on the second door frame;

[0008] A fixed shaft is fixedly installed on the lifting crossbar, and flattening components are installed on both ends of the fixed shaft. The flattening components are used to push the folds of the laser composite film from the middle to the edge position, thereby flattening the folds of the laser composite film and improving the folding quality of the laser composite film.

[0009] Further technical solution: the flattening assembly includes a conveying roller, which is rotatably mounted on a fixed shaft, a receiving groove is provided on the side of the conveying roller, a light rod is fixedly connected to the inside of the receiving groove, a slide plate is slidably mounted on the light rod, a second compression spring is connected between the side of the slide plate away from the center of the workbench and the side wall of the receiving groove, a plurality of fourth guide rods are penetrated and slidably mounted on the slide plate, a movable groove for the movement of the fourth guide rods is provided on the side wall of the receiving groove, a plurality of fourth guide rods are fixedly connected to a flattening block at one end away from the axis of the conveying roller, a third compression spring is connected between a plurality of the flattening blocks and the slide plate, initially, a plurality of the flattening blocks extend out of the second compression spring, a guide wedge block is fixedly connected to the side wall of the receiving groove close to the center of the workbench, and the inclined surface of the guide wedge block is tangent to the edge of the flattening block at the end of the slide plate.

[0010] Further technical solution: The lengths of the plurality of third compression springs decrease successively from the center position of the workbench to the edge position of the workbench, and as the plurality of flattening blocks slowly descend, the plurality of flattening blocks flatten the wrinkles of the laser composite film successively.

[0011] Further technical solution: the flattening assembly also includes a locking mechanism, the locking mechanism includes a mounting groove provided inside the fixed shaft, a push plate is slidably installed inside the mounting groove, a magnetic strip is fixedly connected to the side of the push plate close to the fourth guide rod, a card strip is adsorbed on the side of the magnetic strip, a plurality of strong magnets are arranged on the side of the card strip close to the magnetic strip, a through hole for the card strip to pass through is provided on the conveying roller, a plurality of card slots are provided on the sides of the fourth guide rods close to the card strip, and a fourth compression spring is connected between the side of the push plate away from the magnetic strip and the mounting groove;

[0012] Since the lengths of the multiple third compression springs are different, the positions of the card slots on different fourth guide rods are also different. Specifically, the distance from each card slot to the card strip is equal to the distance from the flattening block to the sliding plate. When all the flattening blocks are fully retracted into the storage groove, under the elastic force of the fourth compression spring, the card strip is inserted into all the card slots, thereby fixing the fourth guide rod by the card strip and preventing the flattening block from popping out again;

[0013] To prevent the conveying roller from being blocked by the card strip and unable to rotate, the distance from the side of the card slot away from the card strip to the surface of the fixed shaft is not less than the width of the card strip. Thus, when the conveying roller rotates, the conveying roller can drive the card strip to rotate together, and when the through hole communicates with the installation groove again, the card strip is adsorbed by the magnetic strip again;

[0014] Since there are two flattening assemblies, to facilitate controlling the push plate and releasing the fixing of the card strip to the fourth guide rod, a dialing frame is fixedly connected between the two push plates, and the dialing frame penetrates through the fixed shaft and the lifting cross bar.

[0015] Further technical solution: The conveying roller is arranged between two second driving rollers;

[0016] After the flattening assembly flattens the laser composite film, to prevent the laser composite film from wrinkling again, side pressing mechanisms are installed at both ends of the lifting cross bar. The side pressing mechanism includes a sliding head slidably installed at the end of the lifting cross bar. A first compression spring is connected between the sliding head and the lifting cross bar. A side pressing roller is rotatably installed at the bottom of the sliding head. Under the action of the first compression spring, the side pressing roller clamps the edge of the laser composite film on the second driving roller, thereby preventing the laser composite film from wrinkling;

[0017] To facilitate the installation of the laser composite film, a fixed baffle is fixedly connected to the sliding head, and an activity hole for the fixed baffle to move is opened on the lifting cross bar.

[0018] Further technical solution: A linkage mechanism is connected between the two fixed baffles and the dialing frame. The linkage mechanism includes a linkage plate fixedly connected to one end of the dialing frame. A stop rod and a connecting rod are fixedly connected to both sides of the linkage plate near the fixed baffle. The two connecting rods are located between the two stop rods. When the card strip is stuck into the card slot, there is a gap between the end of the stop rod and the side wall of the fixed baffle. The width of the gap is less than the depth of the card slot, so that when the card strip is blocked by the fourth guide rod, the stop rod will block the fixed baffle, thereby leaving a space for installing the laser composite film between the side pressing roller and the second driving roller. The connecting rod is "L"-shaped. Wedge-shaped push blocks are fixedly connected to the opposite sides of the two fixed baffles. The inclined surface of the wedge-shaped push block inclines away from the card strip. Guide cylinders are fixedly connected to one ends of the two connecting rods close to the wedge-shaped push blocks;

[0019] In order to facilitate the simultaneous control of the two side pressure rollers, the linkage mechanism further includes an intermediate gear, which is rotatably installed on the lifting cross bar. A first rack is fixedly connected to the side of one of the fixed baffles, and a second rack is fixedly connected to the side of the other fixed baffle. Both the first rack and the second rack are engaged with the intermediate gear, and the first rack and the second rack are located on both sides of the intermediate gear.

[0020] Further technical solution: An auxiliary edge folding mechanism is also installed on the workbench, and the auxiliary edge folding mechanism is located between the third driving roller and the fourth driving roller;

[0021] The auxiliary edge folding mechanism includes a third gantry fixedly connected to the workbench. A third adjusting screw is threadedly connected to the third gantry. One end of the third adjusting screw close to the workbench is rotatably connected to a lifting plate. A third guiding rod is fixedly connected to the lifting plate. The third guiding rod penetrates and is slidably installed on the third gantry. The bottom of the lifting plate is fixedly installed with a limiting plate through a fixed rod. Both ends of the limiting plate are arc-shaped to prevent it from scratching the laser composite film, and at the same time make the thickness of the limiting plate as small as possible. For example, the thickness of the limiting plate is not greater than twice the thickness of the laser composite film, so as to make the edge folding position of the laser composite film more accurate.

[0022] Further technical solution: A feeding mechanism and a receiving mechanism are also installed on the workbench. The feeding mechanism is located on the side of the first driving roller away from the second driving roller, and the receiving mechanism is located on the side of the fourth driving roller away from the third driving roller.

[0023] Further technical solution: Two limiting conveying mechanisms are also installed on the workbench. One limiting conveying mechanism is installed between the feeding mechanism and the first driving roller, and the other limiting conveying mechanism is installed between the fourth driving roller and the receiving mechanism;

[0024] The limiting conveying mechanism includes a first gantry fixedly installed on the workbench. A first adjusting screw is threadedly connected to the first gantry. One end of the first adjusting screw close to the workbench is rotatably connected to a lifting frame. A first guiding rod is fixedly connected to the lifting frame. The first guiding rod penetrates and is slidably installed on the first gantry. A limiting roller is rotatably installed on the side of the lifting frame close to the workbench.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. In the present invention, by providing a first driving roller, a second driving roller, a third driving roller and a fourth driving roller with included angles of 45°, 90°, 135° and 180° in sequence, the edges of the laser composite film are deformed in different angles in sequence, so that hemming operation can be realized. The material is fed on one side of the workbench and collected on the other side. After passing through the first driving roller, the second driving roller, the third driving roller and the fourth driving roller, the laser composite film can be hemmed. This device can carry out continuous processing, greatly improving the processing efficiency;

[0027] 2. In the present invention, by providing a flattening mechanism, the wrinkles on the laser composite film are pushed from the center position of the workbench to the edge position of the workbench by flattening blocks. Under the own toughness of the laser composite film, it is restored to flatness, so as to flatten the wrinkles that appear during the hemming process of the laser composite film, avoid hemming errors, and improve the processing quality of the laser composite film;

[0028] 3. In the present invention, by making the lengths of multiple third compression springs decrease in sequence from the center position of the workbench to the edge position of the workbench, multiple flattening blocks can flatten the wrinkles of the laser composite film in sequence and drive the wrinkles at the center of the workbench to the edge position of the workbench, avoiding the situation that multiple flattening blocks descend together and compressing the wrinkles so that they cannot be flattened;

[0029] 4. In the present invention, by providing a locking mechanism, after the flattening blocks flatten the laser composite film, the locking mechanism fixes the flattening blocks to the conveying roller, so that they rotate together with the conveying roller, avoiding the situation that the conveying roller cannot rotate due to the block of the flattening blocks, reducing the friction between the conveying roller and the laser composite film, and avoiding scratching the laser composite film by the conveying roller;

[0030] 5. In the present invention, by arranging the conveying roller between two second driving rollers and providing side pressing mechanisms at both ends of the lifting cross bar, after the laser composite film is flattened, the laser composite film is pressed tightly on the second driving roller by the side pressing mechanisms to avoid the laser composite film from wrinkling again;

[0031] 6. In the present invention, by providing a linkage mechanism, only by operating the fixed baffle can the flattening blocks move together, making the whole mechanism return to the initial state. And when all the flattening blocks retract into the conveying roller, the side pressing roller will automatically press the laser composite film tightly on the second driving roller, making the operation of this device simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 is a schematic diagram of the structure of the flattening mechanism in the present invention.

[0034] Figure 3Schematic cross-sectional structure diagram of the flattening mechanism in the present invention.

[0035] Figure 4 In the present invention Figure 3 Enlarged schematic diagram at position B.

[0036] Figure 5 Schematic installation structure diagram of the flattening component and the locking mechanism in the present invention.

[0037] Figure 6 Schematic installation structure diagram of the flattening block in the present invention.

[0038] Figure 7 Schematic structure diagram of the locking mechanism in the present invention.

[0039] Figure 8 Schematic structure diagram of the clamping strip in the present invention.

[0040] Figure 9 Schematic installation structure diagram of the dialing frame in the present invention.

[0041] Figure 10 In the present invention Figure 2 Enlarged schematic diagram at position A.

[0042] Figure 11 Schematic structure diagram of the auxiliary hemming mechanism in the present invention.

[0043] Figure 12 Schematic structure diagram of the limit transmission mechanism in the present invention.

[0044] In the attached drawings: 1. Loading rack; 2. Material roller; 3. Limit transmission mechanism; 31. First gantry; 32. Lifting frame; 33. First guide rod; 34. First adjusting screw; 35. Limit roller; 4. Workbench; 5. First driving roller; 6. Flattening mechanism; 61. Second gantry; 62. Side pressing mechanism; 621. Side pressing roller; 622. Sliding head; 623. Fixed baffle; 624. First compression spring; 625. Moving hole; 63. Fixed shaft; 64. Flattening assembly; 641. Second compression spring; 642. Receiving groove; 643. Slide plate; 644. Flattening block; 645. Transmission roller; 646. Fourth guide rod; 647. Third compression spring; 648. Guide wedge block; 649. Smooth rod; 6410. Moving groove; 65. Lifting cross bar; 66. Second guide rod; 67. Second adjusting screw; 68. Linkage mechanism; 681. Linkage plate; 682. Stop bar; 683. Wedge-shaped push block; 684. Guide cylinder; 685. Connecting rod; 686. First rack; 687. Intermediate gear; 688. Second rack; 69. Locking mechanism; 691. Card strip; 692. Card slot; 693. Fourth compression spring; 694. Push plate; 695. Magnetic strip; 696. Installation groove; 697. Strong magnet; 698. Pushing frame; 7. Second driving roller; 8. Third driving roller; 9. Auxiliary hemming mechanism; 91. Third gantry; 92. Third guide rod; 93. Lifting plate; 94. Third adjusting screw; 95. Fixed rod; 96. Limit plate; 10. Fourth driving roller; 11. Material receiving mechanism. Detailed implementation manners

[0045] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0047] As Figure 1As shown in the figure, a hemming device for processing a laser composite film provided by the present invention includes a workbench 4. On the workbench 4, two first driving rollers 5, two second driving rollers 7, two third driving rollers 8 and two fourth driving rollers 10 are sequentially rotatably installed. The two first driving rollers 5, the two second driving rollers 7, the two third driving rollers 8 and the two fourth driving rollers 10 are all symmetrically arranged with respect to the central plane of the workbench 4. The distances between the two first driving rollers 5, the two second driving rollers 7, the two third driving rollers 8 and the two fourth driving rollers 10 are all smaller than the width of the laser composite film. And the angles between the axes of the first driving roller 5, the second driving roller 7, the third driving roller 8 and the fourth driving roller 10 and the upper surface of the workbench 4 are 45°, 90°, 135° and 180° in sequence, so that the edge of the laser composite film laid flat on the workbench 4 is gradually flipped by 180°, realizing the hemming of the laser composite film.

[0048] As Figures 1 - 6 As shown in the figure, a hemming device for processing a laser composite film provided by the present invention. Since the laser composite film has greater toughness, when the edge of the laser composite film is flipped, wrinkles are likely to appear in the middle part of the laser composite film, which will lead to an increase in its hemming error and reduce the quality of the laser composite film. Therefore, in this embodiment, a flattening mechanism 6 is further installed on the workbench 4. The flattening mechanism 6 includes a second gantry 61 fixedly connected to the workbench 4. A second adjusting screw 67 is threadedly connected to the second gantry 61. One end of the second adjusting screw 67 close to the workbench 4 is rotatably connected to a lifting cross bar 65. A second guide rod 66 is fixedly connected to the lifting cross bar 65. The second guide rod 66 is installed on the second gantry 61 through a pipe and is slidable.

[0049] A fixed shaft 63 is fixedly installed on the lifting cross bar 65. Flattening components 64 are installed at both ends of the fixed shaft 63. The flattening components 64 are used to push the wrinkles of the laser composite film from the middle to the edge position, thereby flattening the wrinkles of the laser composite film and improving the hemming quality of the laser composite film.

[0050] As Figures 1 - 6As shown in the figure, a hemming device for laser composite film processing provided by the present invention is shown. In this embodiment, the flattening assembly 64 includes a conveying roller 645, the conveying roller 645 is rotatably installed on a fixed shaft 63, a receiving groove 642 is formed on the side surface of the conveying roller 645, a light rod 649 is fixedly connected inside the receiving groove 642, a sliding plate 643 is slidably installed on the light rod 649, a second compression spring 641 is connected between the side surface of the sliding plate 643 facing away from the center of the workbench 4 and the side wall of the receiving groove 642, a plurality of fourth guide rods 646 penetrate and are slidably installed on the sliding plate 643, an activity groove 6410 for the fourth guide rods 646 to move is formed on the side wall of the receiving groove 642, and a flattening block 644 is fixedly connected to one end of each of the plurality of fourth guide rods 646 away from the axis of the conveying roller 645. A third compression spring 647 is connected between each of the plurality of flattening blocks 644 and the sliding plate 643. Initially, each of the plurality of flattening blocks 644 extends out of the second compression spring 641. A guiding wedge block 648 is fixedly connected to the side wall of the receiving groove 642 close to the center of the workbench 4, and the inclined surface of the guiding wedge block 648 is tangent to the edge of the flattening block 644 at the end of the sliding plate 643.

[0051] After installing the laser composite film, rotate the second adjusting screw 67. The second adjusting screw 67 drives the lifting cross bar 65 to descend. The lifting cross bar 65 drives the fixed shaft 63 and the conveying roller 645 to descend. The conveying roller 645 drives the flattening block 644 to descend through the sliding plate 643 and the third compression spring 647. When the flattening block 644 is blocked by the laser composite film, under the reaction force, the guiding wedge block 648 will squeeze the flattening block 644 to move towards the outside of the workbench 4, so that the flattening block 644 can push the wrinkles on the laser composite film from the center position of the workbench 4 to the edge position of the workbench 4. Under the resilience of the laser composite film itself, it resumes flatness.

[0052] As Figures 2 - 4 and Figure 6 As shown in the figure, a hemming device for laser composite film processing provided by the present invention is shown. In order to improve the flattening effect and prevent multiple flattening blocks 644 from descending together, thereby compacting the wrinkles and making it impossible to flatten the wrinkles. In this embodiment, the lengths of the plurality of third compression springs 647 decrease in sequence from the center position of the workbench 4 to the edge position of the workbench 4. As the plurality of flattening blocks 644 slowly descend, the plurality of flattening blocks 644 flatten the wrinkles of the laser composite film in sequence.

[0053] As Figures 2 - 9As shown in the figure, a hemming device for processing a laser composite film provided by the present invention. After the flattening block 644 flattens the wrinkles of the laser composite film, multiple flattening blocks 644 are still in an active state. When the laser composite film moves, it drives the rotation of the conveying roller 645. When the flattening block 644 moves to the side of the second gantry 61, under the action of the third compression spring 647, multiple flattening blocks 644 will still pop out. Due to the blockage of the flattening block 644, the conveying roller 645 cannot rotate with the laser composite film, increasing the friction between the conveying roller 645 and the laser composite film, and the conveying roller 645 may also scratch the laser composite film, resulting in a decrease in the quality of the laser composite film. Therefore, in this embodiment, the flattening assembly 64 further includes a locking mechanism 69. The locking mechanism 69 includes an installation groove 696 opened inside the fixed shaft 63. A push plate 694 is slidably installed inside the installation groove 696. A magnetic strip 695 is fixedly connected to the side of the push plate 694 close to the fourth guide rod 646. A latch 691 is adsorbed on the side of the magnetic strip 695. Multiple strong magnets 697 are arranged on the side of the latch 691 close to the magnetic strip 695. A through hole for the latch 691 to pass through is opened on the conveying roller 645. Slots 692 are opened on the sides of multiple fourth guide rods 646 close to the latch 691. A fourth compression spring 693 is connected between the side of the push plate 694 facing away from the magnetic strip 695 and the installation groove 696;

[0054] Due to the different lengths of multiple third compression springs 647, the positions of the slots 692 on different fourth guide rods 646 are also different. Specifically, the distance from each slot 692 to the latch 691 is equal to the distance from the flattening block 644 to the sliding plate 643. When all the flattening blocks 644 are completely retracted into the storage groove 642, under the elastic force of the fourth compression spring 693, the latch 691 is inserted into all the slots 692, so that the latch 691 fixes the fourth guide rod 646 and prevents the flattening block 644 from popping out again;

[0055] To prevent the conveying roller 645 from being blocked by the latch 691 and unable to rotate, the distance from the side of the slot 692 away from the latch 691 to the surface of the fixed shaft 63 is not less than the width of the latch 691. Thus, when the conveying roller 645 rotates, the conveying roller 645 can drive the latch 691 to rotate together, and when the through hole communicates with the installation groove 696 again, the latch 691 is adsorbed by the magnetic strip 695 again;

[0056] Since there are two flattening assemblies 64, in order to facilitate the control of the push plate 694 and release the fixation of the latch 691 on the fourth guide rod 646, a dialing frame 698 is fixedly connected between the two push plates 694. The dialing frame 698 penetrates through the fixed shaft 63 and the lifting cross bar 65.

[0057] When releasing the fixation of the card strip 691 on the fourth guide rod 646, first rotate the conveying roller 645 in the direction of the receiving groove 642 so that the activity groove 6410 communicates with the installation groove 696 through the through hole. Then, push the dialing frame 698. The dialing frame 698 drives the two push plates 694 to move. The push plates 694 pull out the card strip 691 from the card slot 692 through the magnetic strip 695. Under the action of the third compression spring 647, the flattening block 644 is ejected from the receiving groove 642. Then, release the dialing frame 698. Under the action of the fourth compression spring 693, the card strip 691 abuts against the fourth guide rod 646 again.

[0058] As Figures 1 - 3 and Figure 10 shown, a laser composite film processing and hemming device provided by the present invention. From the flipping path of the laser composite film, it can be seen that when the edge of the laser composite film is flipped by 90°, the most wrinkles appear in the middle of the laser composite film. Therefore, in this embodiment, the conveying roller 645 is arranged between the two second driving rollers 7;

[0059] After the flattening assembly 64 flattens the laser composite film, in order to prevent the laser composite film from wrinkling again, side pressing mechanisms 62 are installed at both ends of the lifting cross bar 65. The side pressing mechanism 62 includes a sliding head 622 slidably installed at the end of the lifting cross bar 65. A first compression spring 624 is connected between the sliding head 622 and the lifting cross bar 65. A side pressing roller 621 is rotatably installed at the bottom of the sliding head 622. Under the action of the first compression spring 624, the side pressing roller 621 clamps the edge of the laser composite film on the second driving roller 7, thereby preventing the laser composite film from wrinkling;

[0060] To facilitate the installation of the laser composite film, a fixed baffle 623 is fixedly connected to the sliding head 622, and a moving hole 625 for the fixed baffle 623 to move is opened on the lifting cross bar 65.

[0061] Push the fixed baffle 623. The fixed baffle 623 drives the sliding head 622 to move away from the second driving roller 7, thereby facilitating the passage of the edge of the laser composite film through the gap between the side pressing roller 621 and the second driving roller 7.

[0062] As Figures 2 - 3 and Figures 9 - 10As shown, a hemming device for processing a laser composite film provided by the present invention. In order to facilitate the control of two side pressing mechanisms 62 and two flattening assemblies 64, in this embodiment, a linkage mechanism 68 is connected between two fixed baffles 623 and a dialing frame 698. The linkage mechanism 68 includes a linkage plate 681 fixedly connected to one end of the dialing frame 698. At both ends of the linkage plate 681 and on the side surfaces close to the fixed baffle 623, a stop rod 682 and a connecting rod 685 are fixedly connected. The two connecting rods 685 are located between the two stop rods 682. After the clamping strip 691 is inserted into the clamping groove 692, a gap is left between the end of the stop rod 682 and the side wall of the fixed baffle 623. The width of the gap is smaller than the depth of the clamping groove 692, so that when the clamping strip 691 is blocked by the fourth guide rod 646, the stop rod 682 will block the fixed baffle 623, thereby leaving a space for installing the laser composite film between the side pressing roller 621 and the second transmission roller 7. The connecting rod 685 is in an "L" shape. On the opposite side surfaces of the two fixed baffles 623, a wedge-shaped push block 683 is fixedly connected. The inclined surface of the wedge-shaped push block 683 is inclined in the direction away from the clamping strip 691. At one end of the two connecting rods 685 close to the wedge-shaped push block 683, a guide cylinder 684 is fixedly connected;

[0063] In order to facilitate the simultaneous control of the two side pressing rollers 621, the linkage mechanism 68 further includes an intermediate gear 687. The intermediate gear 687 is rotatably installed on the lifting cross bar 65. On the side surface of one fixed baffle 623, a first rack 686 is fixedly connected. On the side surface of the other fixed baffle 623, a second rack 688 is fixedly connected. Both the first rack 686 and the second rack 688 are engaged with the intermediate gear 687, and the first rack 686 and the second rack 688 are located on both sides of the intermediate gear 687.

[0064] Push one fixed baffle 623, the fixed baffle 623 drives the intermediate gear 687 to rotate through the first rack 686, and the intermediate gear 687 drives the other fixed baffle 623 to move in the reverse direction through the second rack 688;

[0065] In the initial state (the card strip 691 is blocked by the fourth guide rod 646, and the fixed baffle 623 is blocked by the stop rod 682), then the laser composite film is installed. After the installation is completed, the second adjusting screw 67 is rotated. The second adjusting screw 67 drives the conveying roller 645 and the flattening block 644 to descend. The flattening block 644 flattens the wrinkles of the laser composite film. When the conveying roller 645 contacts the surface of the laser composite film, multiple flattening blocks 644 all retract into the storage groove 642, and the card strip 691 snaps into all the card slots 692. At the same time, the push plate 694 drives the linkage plate 681 to move through the dialing frame 698. The linkage plate 681 drives the stop rod 682 away from the fixed baffle 623. The stop rod 682 no longer blocks the fixed baffle 623. Under the action of the first compression spring 624, the sliding head 622 drives the side pressing roller 621 to press the laser composite film tightly against the second driving roller 7;

[0066] After the hemming of the laser composite film is completed, the fixed baffle 623 is pushed. The fixed baffle 623 drives the wedge-shaped push block 683 to cross over the stop rod 682 and squeeze the guide cylinder 684. The guide cylinder 684 drives the linkage plate 681 away from the card slot 692 through the connecting rod 685. The linkage plate 681 drives the two push plates 694 to move through the dialing frame 698. The push plate 694 drives the card strip 691 to disengage from the card slot 692 through the magnetic strip 695. Under the action of the third compression spring 647, all the flattening blocks 644 pop out completely. When the fixed baffle 623 is released, the linkage plate 681 will also be released. The linkage plate 681 drives the card strip 691 to abut against the fourth guide rod 646, while the fixed baffle 623 will be blocked by the stop rod 682, so that the whole mechanism returns to the initial state, facilitating the flattening of the laser composite film next time.

[0067] As Figure 1 and Figure 11 shown, a laser composite film processing and hemming device provided by the present invention. During the movement of the laser composite film from the third driving roller 8 to the fourth driving roller 10, its shape changes greatly. In order to improve the quality of the hemming of the laser composite film, in this embodiment, an auxiliary hemming mechanism 9 is further installed on the workbench 4. The auxiliary hemming mechanism 9 is located between the third driving roller 8 and the fourth driving roller 10;

[0068] The auxiliary hemming mechanism 9 includes a third gantry 91 fixedly connected to the workbench 4. A third adjusting screw 94 is threadedly connected to the third gantry 91. One end of the third adjusting screw 94 close to the workbench 4 is rotatably connected to a lifting plate 93. A third guide rod 92 is fixedly connected to the lifting plate 93. The third guide rod 92 penetrates and is slidably installed on the third gantry 91. A limiting plate 96 is fixedly installed at the bottom of the lifting plate 93 through a fixing rod 95. Both ends of the limiting plate 96 are arc-shaped to prevent it from scratching the laser composite film and at the same time make the thickness of the limiting plate 96 as small as possible. For example, the thickness of the limiting plate 96 is not greater than twice the thickness of the laser composite film, so that the hemming position of the laser composite film is more accurate.

[0069] When installing the laser composite film, press the limiting plate 96 on the laser composite film and let the hem of the laser composite film extend from above the end of the limiting plate 96, which can avoid wrinkles in the middle of the laser composite film and at the same time make the width of the hem of the laser composite film more accurate, improving the quality of the hemming of the laser composite film.

[0070] As Figure 1 As shown, a laser composite film processing and hemming device provided by the present invention. In this embodiment, a feeding mechanism and a winding mechanism 11 are further installed on the workbench 4. The feeding mechanism is located on the side of the first driving roller 5 away from the second driving roller 7, and the winding mechanism 11 is located on the side of the fourth driving roller 10 away from the third driving roller 8.

[0071] The feeding mechanism includes a feeding rack 1 fixedly installed on the workbench 4. A material roll 2 is placed on the feeding rack 1. The winding mechanism 11 includes a winding rack fixedly installed on the workbench 4. A winding roller is placed on the winding rack. A motor is fixedly installed on the workbench 4, and the output shaft of the motor is detachably installed with one end of the winding roller.

[0072] As Figure 1 and Figure 12 As shown, a laser composite film processing and hemming device provided by the present invention. In this embodiment, two limiting conveying mechanisms 3 are further installed on the workbench 4. One limiting conveying mechanism 3 is installed between the feeding mechanism and the first driving roller 5, and the other limiting conveying mechanism 3 is installed between the fourth driving roller 10 and the winding mechanism 11;

[0073] The limiting conveying mechanism 3 includes a first gantry 31 fixedly installed on the workbench 4. A first adjusting screw 34 is threadedly connected to the first gantry 31. One end of the first adjusting screw 34 close to the workbench 4 is rotatably connected to a lifting frame 32. A first guide rod 33 is fixedly connected to the lifting frame 32. The first guide rod 33 penetrates and is slidably installed on the first gantry 31. A limiting roller 35 is rotatably installed on the side of the lifting frame 32 close to the workbench 4.

[0074] Working principle:

[0075] Place the material roll 2 on the unwinding rack 1. Pass one end of the laser composite film successively under the limiting roller 35, between the two first driving rollers 5, between the two second driving rollers 7, under the conveying roller 645, between the two third driving rollers 8, under the limiting plate 96, between the two fourth driving rollers 10, and under the limiting roller 35, and wind it around the winding roll. Then fold the edge of the laser composite film successively according to the angles of the first driving roller 5, the second driving roller 7, the third driving roller 8, and the fourth driving roller 10. Finally, rotate the first adjusting screw 34, the second adjusting screw 67, the third adjusting screw 94, and the first adjusting screw 34 in sequence, so that the limiting roller 35, the conveying roller 645, the side pressing roller 621, the limiting plate 96, and the limiting roller 35 press the laser composite film against the workbench 4 and the second driving roller 7. Then the motor can be started to start winding the laser composite film. The laser composite film after winding is the laser composite film with the edges folded;

[0076] After the laser composite film on the material roll 2 is processed, the material roll 2 and the winding roll can be replaced, so as to realize the continuous edge folding of the laser composite film.

[0077] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0078] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hemming device for laser composite film processing, comprising a workbench (4), characterized in that, On the workbench (4), two first driving rollers (5), two second driving rollers (7), two third driving rollers (8) and two fourth driving rollers (10) are successively rotatably installed. The two first driving rollers (5), two second driving rollers (7), two third driving rollers (8) and two fourth driving rollers (10) are all symmetrically arranged with respect to the central plane of the workbench (4). The distances between the two first driving rollers (5), two second driving rollers (7), two third driving rollers (8) and two fourth driving rollers (10) are all smaller than the width of the laser composite film. And the angles between the axes of the first driving roller (5), second driving roller (7), third driving roller (8) and fourth driving roller (10) and the upper surface of the workbench (4) are 45°, 90°, 135° and 180° in sequence; A flattening mechanism (6) is also installed on the workbench (4). The flattening mechanism (6) includes a second gantry (61) fixedly connected to the workbench (4). A second adjusting screw rod (67) is threadedly connected to the second gantry (61). One end of the second adjusting screw rod (67) close to the workbench (4) is rotatably connected to a lifting cross bar (65). A second guide rod (66) is fixedly connected to the lifting cross bar (65). The second guide rod (66) passes through a pipe and is slidably installed on the second gantry (61); A fixed shaft (63) is fixedly installed on the lifting cross bar (65). Flattening assemblies (64) are installed at both ends of the fixed shaft (63). The flattening assemblies (64) are used to push the wrinkles of the laser composite film from the middle to the edge position; The flattening assembly (64) includes a conveying roller (645). The conveying roller (645) is rotatably installed on the fixed shaft (63). A receiving groove (642) is formed on the side surface of the conveying roller (645). A smooth rod (649) is fixedly connected inside the receiving groove (642). A sliding plate (643) is slidably installed on the smooth rod (649). A second compression spring (641) is connected between the side surface of the sliding plate (643) facing away from the center of the workbench (4) and the side wall of the receiving groove (642). A plurality of fourth guide rods (646) penetrate through and are slidably installed on the sliding plate (643). An activity groove (6410) for the fourth guide rods (646) to move is formed on the side wall of the receiving groove (642). Flattening blocks (644) are fixedly connected to one ends of the plurality of fourth guide rods (646) far away from the axis of the conveying roller (645). Third compression springs (647) are connected between the plurality of flattening blocks (644) and the sliding plate (643). Initially, the plurality of flattening blocks (644) all extend out of the second compression spring (641). A guiding wedge block (648) is fixedly connected to the side wall of the receiving groove (642) close to the center of the workbench (4). The inclined surface of the guiding wedge block (648) is tangent to the edge of the flattening block (644) at the end of the sliding plate (643); The lengths of the multiple third compression springs (647) decrease successively from the central position of the workbench (4) to the edge position of the workbench (4).

2. The hemming device for processing the laser composite film according to claim 1, wherein, The flattening assembly (64) further includes a locking mechanism (69). The locking mechanism (69) includes a mounting groove (696) formed inside the fixed shaft (63). A push plate (694) is slidably mounted inside the mounting groove (696). A magnetic strip (695) is fixedly connected to the side of the push plate (694) close to the fourth guide rod (646). A clamping strip (691) is adsorbed on the side of the magnetic strip (695). A plurality of strong magnets (697) are arranged on the side of the clamping strip (691) close to the magnetic strip (695). A through hole for the clamping strip (691) to pass through is formed in the conveying roller (645). A clamping groove (692) is formed in the side of each of the plurality of fourth guide rods (646) close to the clamping strip (691). A fourth compression spring (693) is connected between the side of the push plate (694) facing away from the magnetic strip (695) and the mounting groove (696); After all the flattening blocks (644) are fully retracted into the storage groove (642), the clamping strip (691) is inserted into all the clamping grooves (692); The distance from the side of the clamping groove (692) away from the clamping strip (691) to the surface of the fixed shaft (63) is not less than the width of the clamping strip (691); A dialing frame (698) is fixedly connected between the two push plates (694). The dialing frame (698) penetrates through the fixed shaft (63) and the lifting cross bar (65).

3. The hemming device for laser composite film processing according to claim 2, wherein, The conveying roller (645) is arranged between two second transmission rollers (7); Side pressing mechanisms (62) are installed at both ends of the lifting cross bar (65). The side pressing mechanism (62) includes a sliding head (622) slidably mounted at the end of the lifting cross bar (65). A first compression spring (624) is connected between the sliding head (622) and the lifting cross bar (65). A side pressing roller (621) is rotatably mounted at the bottom of the sliding head (622); A fixed baffle (623) is fixedly connected to the sliding head (622). An activity hole (625) for the fixed baffle (623) to move is formed in the lifting cross bar (65).

4. The hemming device for processing the laser composite film according to claim 3, wherein, A linkage mechanism (68) is connected between the two fixed baffles (623) and the shifting frame (698), and the linkage mechanism (68) includes a linkage plate (681) fixedly connected to one end of the shifting frame (698), and both ends of the linkage plate (681) and the side surface close to the fixed baffle (623) are fixedly connected with a baffle rod (682) and a connecting rod (685), and the two connecting rods (685) are located between the two baffle rods (682). When the clamping strip (691) is clamped into the clamping slot (692), the A gap is left between the end of the blocking rod (682) and the side wall of the fixed blocking plate (623), the width of the gap is smaller than the depth of the card slot (692), the connecting rod (685) is "L"-shaped, the two sides of the fixed blocking plates (623) facing each other are fixedly connected with wedge-shaped push blocks (683), the inclined surface of the wedge-shaped push blocks (683) is inclined in a direction away from the card strip (691), and the ends of the two connecting rods (685) close to the wedge-shaped push blocks (683) are fixedly connected with guide cylinders (684); The linkage mechanism (68) also includes an intermediate gear (687), which is rotatably mounted on the lifting cross bar (65); a first rack (686) is fixedly connected to the side of one of the fixed baffles (623); a second rack (688) is fixedly connected to the side of the other fixed baffle (623); the first rack (686) and the second rack (688) are both meshed with the intermediate gear (687), and the first rack (686) and the second rack (688) are located on both sides of the intermediate gear (687).

5. The hemming device for laser composite film processing according to claim 1, characterized in that, An auxiliary folding mechanism (9) is also installed on the workbench (4), and the auxiliary folding mechanism (9) is located between the third transmission roller (8) and the fourth transmission roller (10); The auxiliary folding mechanism (9) comprises a third door frame (91) fixedly connected to the workbench (4), a third adjusting screw (94) being threadedly connected to the third door frame (91), an end of the third adjusting screw (94) close to the workbench (4) being rotatably connected to a lifting plate (93), a third guide rod (92) being fixedly connected to the lifting plate (93), the third guide rod (92) passing through and slidably mounted on the third door frame (91), a limit plate (96) being fixedly mounted on the bottom of the lifting plate (93) via a fixing rod (95), and both ends of the limit plate (96) being arranged in an arc shape.

6. The hemming device for processing the laser composite film according to claim 1, wherein, The workbench (4) is also provided with a material discharge mechanism and a material collection mechanism (11), wherein the material discharge mechanism is located on the side of the first transmission roller (5) away from the second transmission roller (7), and the material collection mechanism (11) is located on the side of the fourth transmission roller (10) away from the third transmission roller (8).

7. The hemming device for processing laser composite films according to claim 6, characterized in that, Two limiting conveying mechanisms (3) are also installed on the workbench (4). One limiting conveying mechanism (3) is installed between the feeding mechanism and the first driving roller (5), and the other limiting conveying mechanism (3) is installed between the fourth driving roller (10) and the material receiving mechanism (11). The limiting conveying mechanism (3) includes a first gantry (31) fixedly installed on the workbench (4). A first adjusting screw rod (34) is threadedly connected to the first gantry (31). One end of the first adjusting screw rod (34) close to the workbench (4) is rotatably connected to a lifting frame (32). A first guide rod (33) is fixedly connected to the lifting frame (32). The first guide rod (33) passes through and is slidably installed on the first gantry (31). A limiting roller (35) is rotatably installed on the side of the lifting frame (32) close to the workbench (4).

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