Trimming device for single-drawing polyimide film

Abstract

The invention provides a trimming device for a single-drawing polyimide film, which comprises a working platform and a trimming knife arranged on the working platform, the working platform is provided with two bearing plates capable of moving close to each other or away from each other, the lower end surfaces of the two bearing plates are respectively and fixedly provided with a driving nut, and the driving nuts are connected with the trimming knife. The thread directions of the two driving nuts are opposite, a driving screw rod is sleeved with the two driving nuts in a threaded mode, the driving screw rod is fixedly connected with a screwing handle rotationally arranged on the working platform, and the flattening device further comprises a flattening mechanism arranged on the two bearing plates. When the edge trimming device is used for trimming the polyimide film, the polyimide film can be flatly pressed from the upper side, so that the polyimide film is flatly laid on the bearing base plate, and the polyimide film can be prevented from protruding when subjected to left-right pressure.

Description

Technical Field

[0001] The invention relates to the technical field of polyimide film production equipment, in particular to a trimming device for single-drawn polyimide film. Background Art

[0002] Polyimide Film (PI) is a high-performance engineering polyimide film, which is famous for its excellent heat resistance, mechanical properties, insulation properties and chemical stability. In the production process of polyimide film products, it is necessary to perform trimming processes on the film and other processing materials that have completed the processing process. During the trimming process of polyimide film, the following problems are prone to occur: In the existing equipment process, the polyimide film is placed between two clamping plates, and the two clamping plates are moved closer to each other to achieve the clamping and fixing of the polyimide film. However, during the fixing process using the existing method, due to the extrusion effect, the middle part of the polyimide film will bulge upward, which will cause a cavity to bulge under the polyimide film. In the subsequent trimming process, since the bulging part of the polyimide film is not subjected to force during cutting and will deform, during trimming, more burrs will be generated on the cutting edge, or the trimming process will not meet the precision requirements, resulting in an increase in the scrap rate. In order to solve the above problems, the present invention proposes a trimming device for single-pull polyimide film. Summary of the invention

[0003] To achieve the above-mentioned objectives, the present invention provides a trimming device for single-drawn polyimide film, comprising a working platform and a trimming knife arranged on the working platform, wherein the working platform is provided with two supporting plates that can move towards or away from each other, and driving nuts are fixedly arranged on the lower end surfaces of the two supporting plates, respectively, and the thread directions of the two driving nuts are opposite, and the two driving nuts are both threadedly sleeved on the outside of the driving screw, and the driving screw is fixedly connected to a screwing handle rotatably arranged on the working platform, and also includes a flattening mechanism arranged on the two supporting plates, and when working, when the two supporting plates move towards each other, the flattening mechanism moves downward to complete the flattening of the single-drawn polyimide film.

[0004] Optionally, the flattening mechanism includes two movable plates, which are arranged directly above the supporting plate, and a flattening plate assembly is arranged between the two movable plates. The flattening mechanism also includes two driving assemblies, which are respectively arranged on the two supporting plates, and the driving assembly includes a driving cylinder fixedly connected to the side wall of the supporting plate, a cylinder arm is fixedly connected to the driving end of the driving cylinder, and the upper end of the cylinder arm is fixedly connected to the lower end face of the fixed block, and the fixed block is fixedly arranged on the side wall of the movable plate.

[0005] Optionally, the flattening mechanism also includes a second telescopic guide assembly, which is arranged between the support plate and the movable plate and is used for connecting the support plate and the movable plate, the second telescopic guide assembly includes a second telescopic guide rod, a second telescopic guide cylinder and a second telescopic guide spring, the second telescopic guide rod is movably inserted in the second telescopic guide cylinder, and the two ends of the second telescopic guide spring are respectively fixedly connected to the side wall of the second telescopic guide rod and the outer side wall of the second telescopic guide cylinder.

[0006] Optionally, the pressure plate assembly includes a main pressure plate, wherein telescopic grooves are provided at both opposite ends of the main pressure plate, a telescopic plate is movably arranged in the telescopic groove, and one end of the telescopic plate outside the telescopic groove is fixedly connected to the side wall of the movable plate. The pressure plate assembly also includes a first telescopic guide assembly, wherein both ends of the first telescopic guide assembly are respectively fixedly connected to the side wall of the telescopic plate and the side wall of the telescopic groove.

[0007] Optionally, the first telescopic guide assembly includes a first telescopic guide rod, a first telescopic guide cylinder and a first telescopic guide spring, the first telescopic guide rod is movably inserted in the first telescopic guide cylinder, the first telescopic guide spring is wound and arranged outside the first telescopic guide rod, and the two ends of the first telescopic guide spring are respectively fixedly connected to the side wall of the first telescopic guide rod and the outer side wall of the first telescopic guide cylinder.

[0008] Optionally, it also includes a thickness adjustment mechanism, which includes a slave pressing plate arranged directly below the main pressing plate, and a third telescopic guide assembly arranged between the slave pressing plate and the main pressing plate and used to connect the slave pressing plate and the main pressing plate, and the number of the third telescopic guide assemblies is set to N, where N is a positive integer greater than or equal to 2.

[0009] Optionally, the third telescopic guide assembly includes a third telescopic guide rod, a third telescopic guide cylinder and a third telescopic guide spring, the third telescopic guide rod is movably inserted in the third telescopic guide cylinder, the third telescopic guide spring is wound and arranged outside the third telescopic guide rod, and the two ends of the third telescopic guide spring are respectively fixedly connected to the side wall of the third telescopic guide rod and the outer side wall of the third telescopic guide cylinder.

[0010] Optionally, it also includes a sensor, which is fixedly arranged on the lower end surface of the pressing plate, and a processor electrically connected to the sensor.

[0011] Optionally, it also includes a pushing mechanism, which includes a pushing hole opened on the slave pressing plate, two pushing wheels symmetrically and movably arranged in the pushing hole, the pushing wheel fixed sleeve is arranged outside the first rotating rod, the first rotating rod is movably arranged in the moving hole, the moving hole is opened on the baffle, the baffle is fixedly connected to the upper end surface of the slave pressing plate, a fixed block is fixedly sleeved outside the first rotating rod, a spur rack is fixedly connected to the side wall of the fixed block, the spur rack is meshed with a driving gear, the driving gear is fixedly sleeved outside the second rotating rod, the second rotating rod is mutually connected to the driving end of the first driving motor, and the first driving motor is fixedly arranged on the upper end surface of the slave pressing plate.

[0012] Optionally, it also includes a second driving motor connected to the driving screw, and an intelligent control mechanism, the intelligent control mechanism includes a first connecting wire, the two ends of the first connecting wire are respectively fixedly connected to two conductive blocks, the conductive block is embedded in a supporting plate, the upper end of the conductive block is fixedly connected to the second connecting wire, the upper end of the second connecting wire is fixedly connected to the first electrode contact piece, the first electrode contact piece is embedded in the supporting plate, a second electrode contact piece is arranged above the first electrode contact piece, the second electrode contact piece is embedded in a movable plate, a support spring is fixedly connected to the lower end surface of the movable plate, and the lower end of the support spring is fixedly connected to the supporting plate.

[0013] The beneficial effects of the present invention are as follows: The present invention improves the structure of the existing trimming device for single-drawn polyimide film. The improved trimming device for single-drawn polyimide film has a flattening mechanism added between two supporting plates. The arrangement of the flattening mechanism can form a flat pressure on the polyimide film from above when trimming the polyimide film, so that the polyimide film is flatly laid on the supporting pad. This can avoid the bulge of the polyimide film when it is subjected to left and right pressures, and avoid the bulge between the polyimide film and the supporting pad, thereby reducing the burrs generated during trimming, while ensuring that the trimming accuracy meets the requirements and reducing the scrap rate of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of a trimming device for a single-drawn polyimide film in the prior art; Figure 2 It is a schematic structural diagram of an embodiment of the trimming device for single-drawn polyimide film of the present invention; Figure 3 The invention relates to a trimming device for a single-drawn polyimide film. Figure 2 Schematic diagram of the structure of the medium pressure flat mechanism; Figure 4 The invention relates to a trimming device for a single-drawn polyimide film. Figure 3 A schematic diagram of the enlarged structure in the middle; Figure 5 It is a schematic diagram of the structure of the thickness adjustment mechanism in the trimming device for single-drawn polyimide film of the present invention; Figure 6 The invention relates to a trimming device for a single-drawn polyimide film. Figure 5 Middle B is an enlarged schematic diagram of the structure; Figure 7 It is a schematic diagram of the structure of the flattening mechanism in the trimming device for single-drawn polyimide film of the present invention; Figure 8 The invention relates to a trimming device for a single-drawn polyimide film. Figure 7 A magnified schematic diagram of the C structure; Fig. 9 It is a schematic diagram of the structure of the intelligent driving mechanism in the trimming device for single-drawn polyimide film of the present invention; Fig.10 It is a structural schematic diagram of the intelligent control mechanism in the trimming device for single-drawn polyimide film of the present invention; Fig.11 The invention relates to a trimming device for a single-drawn polyimide film. Fig.10 A magnified schematic diagram of the D structure.

[0015] Reference numerals Working platform 1, supporting plate 2, driving nut 3, driving screw 4, screwing handle 5, trimming knife 6, Flattening mechanism 7, flattening plate assembly 71, telescopic plate 711, telescopic groove 712, main flattening plate 713, first telescopic guide assembly 714, first telescopic guide rod 7141, first telescopic guide cylinder 7142, first telescopic guide spring 7143, moving plate 72, second telescopic guide assembly 73, second telescopic guide rod 731, second telescopic guide cylinder 732, second telescopic guide spring 733, driving assembly 74, driving cylinder 741, cylinder arm 742, fixing block 743, Thickness adjustment mechanism 8, slave pressing plate 81, third telescopic guide assembly 82, third telescopic guide rod 821, third telescopic guide cylinder 822, third telescopic guide spring 823, Sensor 9, The flattening mechanism 10, the flattening hole 101, the flattening wheel 102, the first rotating rod 103, the moving hole 104, the fence 105, the fixing block 106, the spur rack 107, the driving gear 108, the second rotating rod 109, the first driving motor 1010, The second drive motor 11, Intelligent control mechanism 12 , first connecting wire 121 , conductive block 122 , second connecting wire 123 , first electrode contact sheet 124 , second electrode contact sheet 125 , moving plate 126 , supporting spring 127 . DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field of the present invention. The words "including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0017] The existing trimming device for polyimide film includes a working platform 100 and a trimming knife 110 arranged on the working platform 100. The working platform 100 is provided with two supporting plates 120 that can move towards or away from each other. Driving nuts 130 are fixedly arranged on the lower end surfaces of the two supporting plates 120 respectively. The thread directions of the two driving nuts 130 are opposite, and the two driving nuts 130 are both threadedly sleeved on the outside of the driving screw 140. The driving screw 140 is fixedly connected to the screwing handle 150 rotatably arranged on the working platform 100. A supporting pad (not shown) is arranged between the two supporting plates 120, and the supporting pad is fixed on the upper end surface of the working platform 100. Figure 1 As shown. During operation, the polyimide film is placed on two supporting plates 120 and a supporting pad, and then the screw handle 150 is rotated. The screw handle 150 rotates, and the driving screw 14 rotates. The driving screw 14 rotates, and the two supporting plates 120 move closer to each other through the two driving nuts 130, thereby completing the support and fixation of the polyimide film from the left and right sides. However, due to the elasticity of the polyimide film itself, the clamping force from the left and right sides will cause the middle of the polyimide film to bulge upward, so that during trimming, a cavity will bulge under the polyimide film. In the subsequent trimming process, since the bulging part of the polyimide film is not subjected to force and will deform during cutting, more burrs will be generated on the cutting edge during trimming, or the trimming process will not meet the precision requirements, resulting in an increased scrap rate. In view of the problems existing in the prior art, an embodiment of the present invention provides a trimming device for a single-stretch polyimide film, such as Figure 2As shown, the trimming device for the single-pull polyimide film includes a working platform 1 and a trimming knife 6 arranged on the working platform 1. The working platform 1 is provided with two supporting plates 2 that can move towards or away from each other, and a supporting pad (not shown) is also arranged between the two supporting plates 2, and the supporting pad is fixed on the upper end surface of the working platform 1. It should be noted that the two supporting plates 2 are symmetrically arranged about the supporting pad; driving nuts 3 are respectively fixedly arranged on the lower end surfaces of the two supporting plates 2, and the thread directions of the two driving nuts 3 are opposite, and the two driving nuts 3 are both threadedly sleeved on the outside of the driving screw 4, and the driving screw 4 is fixedly connected to the screwing handle 5 rotatably arranged on the working platform 1, and also includes a flattening mechanism 7 arranged on the two supporting plates 2. During operation, when the two supporting plates 2 move towards each other, the flattening mechanism 7 moves downward to complete the flattening of the single-pull polyimide film.

[0018] In one embodiment, Figure 3 As shown, the flattening mechanism 7 includes two movable plates 72, and the movable plates 72 are arranged directly above the supporting plate 2. A flattening plate assembly 71 is arranged between the two movable plates 72, and the flattening plate assembly 71 is used to provide downward pressure, so as to press the polyimide film flat on the supporting pad and the supporting plate 2, so as to avoid wrinkles in the polyimide film; the flattening mechanism 7 also includes two driving assemblies 74, and the setting of the two driving assemblies 74 can provide upward or downward driving force for the two movable plates 72 at the same time, such as Figure 3 As shown, the two driving assemblies 74 are respectively arranged on the two supporting plates 2, and the driving assembly 74 includes a driving cylinder 741 fixedly connected to the side wall of the supporting plate 2, and a cylinder arm 742 is fixedly connected to the driving end of the driving cylinder 741, and the upper end of the cylinder arm 742 is fixedly connected to the lower end surface of the fixed block 743, and the fixed block 743 is fixedly arranged on the side wall of the movable plate 72. The arrangement of the driving assembly 74 can adjust the distance between the pressing plate assembly 71 and the working platform 1, so that the device can be suitable for polyimide films of different thicknesses; specifically, when working, the driving assembly 74 can adjust the pressing plate assembly 71 to move vertically upward, and then place the polyimide film between the pressing plate assembly 71 and the supporting pad, and then start the driving assembly 74, and the driving assembly 74 controls the pressing plate assembly 71 to move downward to complete the flattening of the polyimide film.

[0019] In one embodiment, Figure 4As shown, the flattening mechanism 7 also includes a second telescopic guide assembly 73, which is arranged between the supporting plate 2 and the movable plate 72 and is used for connecting the supporting plate 2 and the movable plate 72. The second telescopic guide assembly 73 includes a second telescopic guide rod 731, a second telescopic guide cylinder 732 and a second telescopic guide spring 733. The second telescopic guide rod 731 is movably inserted in the second telescopic guide cylinder 732, and the two ends of the second telescopic guide spring 733 are respectively fixedly connected to the side wall of the second telescopic guide rod 731 and the outer side wall of the second telescopic guide cylinder 732. The second telescopic guide assembly 73 can guide the movement of the movable plate 72 so that the movable plate 72 can only move in the vertical direction, and at the same time, it can provide power for the reset movement of the movable plate 72.

[0020] In order to make the device applicable to polyimide films of different widths and effectively avoid the two supporting plates 2 from getting stuck when moving away from each other, in one embodiment, Figure 4 As shown, the flat plate assembly 71 includes a main flat plate 713, and telescopic grooves 712 are provided at opposite ends of the main flat plate 713. A telescopic plate 711 is movably arranged in the telescopic groove 712, and one end of the telescopic plate 711 located outside the telescopic groove 712 is fixedly connected to the side wall of the movable plate 72. The flat plate assembly 71 also includes a first telescopic guide assembly 714, and the two ends of the first telescopic guide assembly 714 are respectively fixedly connected to the side wall of the telescopic plate 711 and the side wall of the telescopic groove 712.

[0021] In this embodiment, the structural design of the pressing plate assembly 71 is reasonable, which can not only realize the flat pressing of the polyimide film through the main pressing plate 713, but also change the overall length of the pressing plate assembly 71 through the extension and retraction of the telescopic plate 711 relative to the main pressing plate 713, so that the pressing plate assembly 71 can be applied to polyimide films of different widths (the width can be understood as the size in the horizontal direction). At the same time, since the telescopic plate 711 can be extended and retracted relative to the main pressing plate 713, it can avoid the two supporting plates 2 from being stuck when moving away from each other.

[0022] In one embodiment, if Figure 4As shown, the first telescopic guide assembly 714 includes a first telescopic guide rod 7141, a first telescopic guide cylinder 7142 and a first telescopic guide spring 7143. The first telescopic guide rod 7141 is movably inserted in the first telescopic guide cylinder 7142. The first telescopic guide spring 7143 is wound outside the first telescopic guide rod 7141. The two ends of the first telescopic guide spring 7143 are respectively fixedly connected to the side wall of the first telescopic guide rod 7141 and the outer side wall of the first telescopic guide cylinder 7142. The first telescopic guide assembly 714 can guide the movement of the telescopic plate 711 so that the movement of the telescopic plate 711 relative to the main pressure plate 713 is only performed in the horizontal direction. At the same time, it can also provide power for the reset movement of the telescopic plate 711.

[0023] In order to further increase the thickness difference between the telescopic plate 711 and the main pressing plate 713, so that the thickness of the main pressing plate 713 is greater than the thickness of the telescopic plate 711, in one embodiment, Figure 5 and Figure 6 As shown, the trimming device for single-stretch polyimide film also includes a thickness adjustment mechanism 8, which includes a slave pressing plate 81 arranged directly below the main pressing plate 713, and a third telescopic guide assembly 82 arranged between the slave pressing plate 81 and the main pressing plate 713 and used to connect the slave pressing plate 81 and the main pressing plate 713. The number of the third telescopic guide assemblies 82 is set to N, wherein N is a positive integer greater than or equal to 2.

[0024] In this embodiment, the combined thickness of the slave pressing plate 81 and the main pressing plate 713 is much greater than the thickness of the telescopic plate 711, thereby avoiding the influence of the telescopic plate 711 when the combined structure of the pressing plate 81 and the main pressing plate 713 flattens the polyimide film; since the slave pressing plate 81 and the main pressing plate 713 can move relative to each other, the combined thickness of the slave pressing plate 81 and the main pressing plate 713 can be changed, thereby making the device more applicable in a wider range from the perspective of thickness.

[0025] In one embodiment, Figure 6As shown, the third telescopic guide assembly 82 includes a third telescopic guide rod 821, a third telescopic guide cylinder 822 and a third telescopic guide spring 823. The third telescopic guide rod 821 is movably inserted in the third telescopic guide cylinder 822. The third telescopic guide spring 823 is wound outside the third telescopic guide rod 821. The two ends of the third telescopic guide spring 823 are respectively fixedly connected to the side wall of the third telescopic guide rod 821 and the outer side wall of the third telescopic guide cylinder 822. The third telescopic guide assembly 82 can not only guide the movement of the slave pressing plate 81, so that the movement direction of the slave pressing plate 81 is only perpendicular to the main pressing plate 713, but also provide power for the reset movement of the slave pressing plate 81.

[0026] When the main pressing plate 713 and the slave pressing plate 81 are pressing the polyimide film, solid particles may fall between the surface of the supporting plate and the supporting plate 2 and the polyimide film, or on the upper surface of the supporting plate and the supporting plate 2. In order to prevent the solid particles from causing the polyimide film to bulge, or the polyimide film to be damaged by the pressure of the main pressing plate 713 and the slave pressing plate 81, in one embodiment, as Figure 7 and Figure 8 As shown, the trimming device for single-pull polyimide film also includes a flattening mechanism 10, which includes a flattening hole 101 opened on the slave pressing plate 81, and two flattening wheels 102 are symmetrically and movably arranged in the flattening hole 101, and the flattening wheels 102 are fixedly sleeved outside the first rotating rod 103, and the first rotating rod 103 is movably arranged in the moving hole 104, and the moving hole 104 is opened on the fence 105, and the fence 105 is fixedly connected to the upper end surface of the slave pressing plate 81, and a fixed block 106 is fixedly sleeved outside the first rotating rod 103, and the side wall of the fixed block 106 is fixedly connected to a spur rack 107, and the spur rack 107 is meshed with a driving gear 108, and the driving gear 108 is fixedly sleeved outside the second rotating rod 109, and the second rotating rod 109 is mutually connected to the driving end of the first driving motor 1010, and the first driving motor 1010 is fixedly set on the upper end surface of the slave pressing plate 81.

[0027] During operation, the start of the first drive motor 1010 will drive the drive gear 108 to rotate through the second rotating rod 109. The rotation of the drive gear 108 will drive the two push wheels 102 to move left and right respectively through the two spur racks 107, the fixed block 106 and the first rotating rod 103. The movement of the two push wheels 102 will push the solid particles between the supporting plate and the surface of the supporting plate 2 and the polyimide film, or on the supporting plate and the upper surface of the supporting plate 2, so that the solid particles leave the working space. This can effectively avoid the problem of polyimide film bulging due to solid particles, or the damage of the polyimide film due to solid particles.

[0028] In order to improve the intelligence of the device and improve the accuracy of the device, in one implementation, Figure 6 As shown, the trimming device for single-pull polyimide film of the present invention also includes a sensor 9, which is fixedly arranged on the lower end surface of the slave pressing plate 81, and a processor electrically connected to the sensor 9. During operation, when the slave pressing plate 81 contacts the polyimide film with the sensor 9, the sensor 9 will collect the contact signal at this time, and the contact signal will be received and processed by the processor, and the processor will control the first drive motor 1010 to start working. In this way, the operating efficiency of the equipment can be greatly improved by intelligently controlling the flattening process of the flattening mechanism 10. It is worth noting that the setting of the flattening mechanism 10 in the present invention can clean up solid particles, and at the same time, it can push out the bubbles between the support plate 2 and the support pad and the polyimide film, so that the polyimide film can fit more closely with the support plate 2 and the support pad.

[0029] The existing trimming equipment uses a screw handle to manually adjust the two support plates, which is time-consuming, labor-intensive and inconvenient to operate. In order to solve the above problems, in one embodiment, Fig. 9 , Fig.10 and Fig.11As shown, the trimming device for single-drawn polyimide film of the present invention also includes a second driving motor 11 connected to the driving screw 4, and an intelligent control mechanism 12, wherein the intelligent control mechanism 12 includes a first connecting wire 121, and the two ends of the first connecting wire 121 are respectively fixedly connected to two conductive blocks 122, and the conductive blocks 122 are embedded in the supporting plate 2, and the upper end of the conductive block 122 is fixedly connected to the second connecting wire 123, and the upper end of the second connecting wire 123 is fixedly connected to the first electrode contact sheet 124, and the first electrode contact sheet 124 is embedded in the supporting plate 2, and a second electrode contact sheet 125 is arranged above the first electrode contact sheet 124, and the second electrode contact sheet 125 is embedded in the moving plate 126, and a support spring 127 is fixedly connected to the lower end surface of the moving plate 126, and the lower end of the support spring 127 is fixedly connected to the supporting plate 2.

[0030] The configuration of this embodiment can significantly improve the intelligence of the device, so that the device is more convenient and easy to operate during the actual operation process, and can greatly improve the operating efficiency of the device. During operation, after the polyimide film is placed on two support plates 2 at the same time (it should be noted that when placed on a single support plate 2, the second drive motor 11 will not work), the polyimide film will press the moving plate 126 and move the second electrode contact sheet 125 downward due to gravity. When the second electrode contact sheet 125 contacts the first electrode contact sheet 124, the series circuit is connected. At this time, the second drive motor 11 will control the start of the work and drive the drive screw 4 to rotate. The rotation of the drive screw 4 will drive the two support plates 2 to move closer to or away from each other under the drive of the two drive nuts 3.

[0031] The beneficial effects of the present invention are as follows: The present invention improves the structure of the existing trimming device for single-pull polyimide film. The improved trimming device for single-pull polyimide film is provided with a flattening mechanism 7 between two supporting plates 2. The arrangement of the flattening mechanism 7 can form a flat pressure on the polyimide film from above when trimming the polyimide film, so that the polyimide film is flattened on the supporting pad. This can avoid the bulge of the polyimide film when it is subjected to left and right pressures, and avoid the bulge between the polyimide film and the supporting pad, thereby reducing the burrs generated during trimming, while ensuring that the trimming accuracy meets the requirements and reducing the scrap rate of the equipment.

[0032] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A trimming device for a single-stretch polyimide film, characterized in that: The invention comprises a working platform (1) and a trimming knife (6) arranged on the working platform (1), wherein the working platform (1) is provided with two supporting plates (2) which can move towards or away from each other, and driving nuts (3) are fixedly arranged on the lower end surfaces of the two supporting plates (2), respectively, and the thread directions of the two driving nuts (3) are opposite, and the two driving nuts (3) are both threadedly sleeved outside the driving screw (4), and the driving screw (4) is fixedly connected to a screwing handle (5) rotatably arranged on the working platform (1), and also comprises a flattening mechanism (7) arranged on the two supporting plates (2), and when working, when the two supporting plates (2) move towards each other, the flattening mechanism (7) moves downward to complete the flattening of the single-pull polyimide film.

2. The trimming device for a single-stretch polyimide film according to claim 1, characterized in that: The flattening mechanism (7) comprises two movable plates (72), wherein the movable plates (72) are arranged directly above the supporting plate (2), and a flattening plate assembly (71) is arranged between the two movable plates (72). The flattening mechanism (7) further comprises two driving assemblies (74), wherein the two driving assemblies (74) are respectively arranged on the two supporting plates (2), and the driving assembly (74) comprises a driving cylinder (741) fixedly connected to the side wall of the supporting plate (2), and a cylinder arm (742) is fixedly connected to the driving end of the driving cylinder (741), and the upper end of the cylinder arm (742) is fixedly connected to the lower end surface of a fixed block (743), and the fixed block (743) is fixedly arranged on the side wall of the movable plate (72).

3. The trimming device for a single-stretch polyimide film according to claim 2, characterized in that: The flattening mechanism (7) further comprises a second telescopic guide assembly (73), the second telescopic guide assembly (73) being arranged between the supporting plate (2) and the movable plate (72) and being used for connecting the supporting plate (2) and the movable plate (72), the second telescopic guide assembly (73) comprising a second telescopic guide rod (731), a second telescopic guide cylinder (732) and a second telescopic guide spring (733), the second telescopic guide rod (731) being movably inserted into the second telescopic guide cylinder (732), and the two ends of the second telescopic guide spring (733) being respectively fixedly connected to the side wall of the second telescopic guide rod (731) and the outer side wall of the second telescopic guide cylinder (732).

4. The edge trimming device for a single-stretch polyimide film according to claim 3, characterized in that: The plate pressing plate assembly (71) includes a main plate pressing plate (713), and telescopic grooves (712) are provided at opposite ends of the main plate pressing plate (713). A telescopic plate (711) is movably arranged in the telescopic groove (712), and one end of the telescopic plate (711) located outside the telescopic groove (712) is fixedly connected to the side wall of the movable plate (72). The plate pressing plate assembly (71) also includes a first telescopic guide assembly (714), and two ends of the first telescopic guide assembly (714) are respectively fixedly connected to the side wall of the telescopic plate (711) and the side wall of the telescopic groove (712).

5. The edge trimming device for a single-stretch polyimide film according to claim 4, characterized in that: The first telescopic guide assembly (714) includes a first telescopic guide rod (7141), a first telescopic guide cylinder (7142) and a first telescopic guide spring (7143); the first telescopic guide rod (7141) is movably inserted into the first telescopic guide cylinder (7142); the first telescopic guide spring (7143) is wound around the outside of the first telescopic guide rod (7141); and the two ends of the first telescopic guide spring (7143) are respectively fixedly connected to the side wall of the first telescopic guide rod (7141) and the outer side wall of the first telescopic guide cylinder (7142).

6. The edge trimming device for a single-stretch polyimide film according to claim 4, characterized in that: It also includes a thickness adjustment mechanism (8), which includes a slave pressing plate (81) arranged directly below the main pressing plate (713), and a third telescopic guide assembly (82) arranged between the slave pressing plate (81) and the main pressing plate (713) and used to connect the slave pressing plate (81) and the main pressing plate (713), and the number of the third telescopic guide assemblies (82) is set to N, where N is a positive integer greater than or equal to 2.

7. The edge trimming device for a single-stretch polyimide film according to claim 6, characterized in that: The third telescopic guide assembly (82) comprises a third telescopic guide rod (821), a third telescopic guide cylinder (822) and a third telescopic guide spring (823); the third telescopic guide rod (821) is movably inserted in the third telescopic guide cylinder (822); the third telescopic guide spring (823) is wound around the outside of the third telescopic guide rod (821); and two ends of the third telescopic guide spring (823) are respectively fixedly connected to the side wall of the third telescopic guide rod (821) and the outer side wall of the third telescopic guide cylinder (822).

8. The edge trimming device for a single-stretch polyimide film according to claim 6, characterized in that: It also includes a sensor (9), the sensor (9) being fixedly arranged on the lower end surface of the pressing plate (81), and a processor electrically connected to the sensor (9).

9. The edge trimming device for a single-stretch polyimide film according to claim 6, characterized in that: The machine also includes a push-flattening mechanism (10), the push-flattening mechanism (10) including a push-flattening hole (101) formed on the slave press plate (81), two push-flattening wheels (102) being symmetrically and movably arranged in the push-flattening hole (101), the push-flattening wheels (102) being fixedly sleeved outside a first rotating rod (103), the first rotating rod (103) being movably arranged in a moving hole (104), the moving hole (104) being formed on a guardrail (105), and the guardrail (105) being fixedly connected to the upper end of the slave press plate (81). On the surface, a fixed block (106) is provided on the outer fixed sleeve of the first rotating rod (103), and a spur rack (107) is fixedly connected to the side wall of the fixed block (106). The spur rack (107) is meshed with a driving gear (108), and the driving gear (108) is fixedly sleeved outside the second rotating rod (109). The second rotating rod (109) is connected to the driving end of the first driving motor (1010), and the first driving motor (1010) is fixedly arranged on the upper end surface of the pressing plate (81).

10. The edge trimming device for a single-stretch polyimide film according to claim 1, characterized in that: The invention also comprises a second drive motor (11) connected to the drive screw (4), and an intelligent control mechanism (12), wherein the intelligent control mechanism (12) comprises a first connecting wire (121), the two ends of the first connecting wire (121) are respectively fixedly connected to two conductive blocks (122), the conductive blocks (122) are embedded in the support plate (2), the upper end of the conductive block (122) is fixedly connected to a second connecting wire (123), the upper end of the second connecting wire (123) is fixedly connected to a first electrode contact sheet (124), the first electrode contact sheet (124) is embedded in the support plate (2), a second electrode contact sheet (125) is arranged above the first electrode contact sheet (124), the second electrode contact sheet (125) is embedded in the moving plate (126), a support spring (127) is fixedly connected to the lower end surface of the moving plate (126), and the lower end of the support spring (127) is fixedly connected to the supporting plate (2).

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