A punching and cutting mechanism for mylar film

Abstract

The utility model discloses a punch cutting mechanism of melinex, including the front material drawing device of installation in rack, first punch cutting device, second punch cutting device, rear material drawing device and cutting device in proper order, first punch cutting device includes first left and right drive component, first up and down drive component, slide, lift seat, first punch cutting knife, sucking disc subassembly and inner mould, first left and right drive component installs in rack, slide connects first left and right drive component, first up and down drive component installs in slide, lift seat connects first up and down drive component, first punch cutting knife and sucking disc subassembly are installed in lift seat respectively, and inner mould is fixedly connected with slide and is located below first punch cutting knife and sucking disc subassembly, second punch cutting device includes two second left and right drive components, two second up and down drive components and two second punch cutting knives, the utility model discloses can carry out two punch operations to melinex in proper order, that is, two punch operations need not use two sets of equipment to carry out respectively to improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of Mylar film production technology, specifically to a punching and cutting mechanism for Mylar film. Background Technology

[0002] As is well known, Mylar membrane is suitable for use in batteries due to its dimensional stability, flatness, excellent tear strength, heat and cold resistance, moisture and water resistance, chemical corrosion resistance, and superior insulation properties, thus making the batteries safer to use.

[0003] To cater to different applications, some Mylar membranes require bending from their flat surface. Specifically, both sides of the Mylar membrane are bent upwards and towards the center until they almost overlap, resulting in a longitudinal cross-section resembling a racetrack. This creates a three-layer structure: the two overlapping layers at the top and the bottom layer formed by the bending. Furthermore, some Mylar membrane production processes require punching and cutting after folding. The punching process involves a first punching step, punching only the first layer, and a second punching step, punching both sides of the bent Mylar membrane simultaneously. Currently, these two punching steps are typically performed using two separate machines, which undoubtedly makes the punching process cumbersome and reduces production efficiency. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a punching and cutting mechanism for Mylar film, which is provided with a first punching device and a second punching device, so that it can perform two punching operations on Mylar film in sequence. That is, the two punching operations do not need to be performed by two separate devices, thereby greatly improving production efficiency and simplifying the structure of the equipment.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A punching and cutting mechanism for Mylar film includes a front feeding device, a first punching device, a second punching device, a rear feeding device, and a cutting device, which are sequentially mounted on a frame from front to back. The first punching device includes a first left-right driving assembly, a first up-down driving assembly, a sliding plate, a lifting seat, a first punching blade, a suction cup assembly, and an inner mold. The first left-right driving assembly is mounted on the frame. The sliding plate is movably connected to the output end of the first left-right driving assembly. The first up-down driving assembly is mounted on the sliding plate. The lifting seat is movably connected to the output end of the first up-down driving assembly. The first punching blade and the suction cup assembly are respectively mounted at the bottom of the lifting seat. The inner mold is fixedly connected to the sliding plate and located below the first punching blade and the suction cup assembly. The inner mold can be used to pass through the folded Mylar film and place the first layer structure of the Mylar film on the top surface of the inner mold. The inner mold is provided with... The device has clearance holes for cooperating with the first punching blade; the first punching blade can be used to punch the first layer structure on top of the Mylar film, and the punched waste can be sent out through the suction cup assembly; the second punching device includes two second left and right drive assemblies, two second up and down drive assemblies, and two second punching blades; the two second left and right drive assemblies are respectively symmetrically mounted on the frame; the two second up and down drive assemblies are respectively movably mounted on the output ends of the two second left and right drive assemblies; a material passage for the Mylar film to pass through is formed between the two second up and down drive assemblies; a second punching blade that can move up and down and is used to punch the Mylar film is provided on the output end of each second up and down drive assembly; a waste hole for cooperating with the second punching blade is provided on the frame; the second punching blade penetrates the Mylar film vertically when punching the Mylar film.

[0007] Furthermore, the first punching blade has a long "U"-shaped cross-section, and the opening on the side of the first punching blade faces one side and outwards; the suction cup assembly includes a suction cup driving cylinder, a suction cup mounting plate, and a vacuum suction cup; the suction cup driving cylinder is mounted on the lifting base; the suction cup mounting plate is movably mounted on the output end of the suction cup driving cylinder; the vacuum suction cup is mounted on the suction cup mounting plate and can be moved into the opening of the first punching blade.

[0008] Furthermore, the first left and right drive assembly includes a first left and right motor mounted on the frame, a first punching screw connected to the output shaft of the first left and right motor, and a first punching slider movably mounted on the first punching screw and connected to the slide plate.

[0009] Furthermore, the first up-and-down drive assembly includes a first up-and-down cylinder; the first up-and-down cylinder is mounted on the slide plate; the output shaft of the first up-and-down cylinder is connected to the lifting seat.

[0010] Furthermore, the first punching device also includes a support plate; the support plate is located below the inner mold and a feeding channel is formed between the support plate and the inner mold.

[0011] Furthermore, each of the second left and right drive components includes a second left and right motor mounted on the frame, a second punching screw connected to the output shaft of the second left and right motor, and a second punching slide mounted on the second punching screw that can move left and right; each of the second punching slides is correspondingly connected to one of the second up and down drive components.

[0012] Furthermore, each of the second up-and-down drive components includes a punching moving seat correspondingly connected to a second punching slide and a second up-and-down cylinder mounted on the punching moving seat; each of the second punching blades is correspondingly mounted on the output shaft of a second up-and-down cylinder.

[0013] Furthermore, each of the two second upper and lower drive assemblies has a groove extending forward and backward on the opposite side of the punching moving seat, and the material passage is formed between the two grooves; each punching moving seat is provided with a guide hole for the second punching blade to pass through and the side of the guide hole is connected to the groove; each guide hole corresponds to the waste hole located below it.

[0014] Furthermore, the rear pulling device includes a rear pulling motor mounted on the frame, a rear drive cylinder mounted on the frame, a rear moving plate movably mounted on the output shaft of the rear drive cylinder, a first rear lower transmission rod rotatably mounted on the frame and one end connected to the output shaft of the rear pulling motor, a first rear active roller mounted on the first rear lower transmission rod, a first rear upper transmission rod rotatably mounted on the rear moving plate and located above the first rear lower transmission rod, a first rear passive roller mounted on the first rear upper transmission rod and cooperating with the first rear active roller, and a photoelectric encoder connected to one end of the first rear upper transmission rod.

[0015] Furthermore, the cutting device includes a cutting cylinder mounted on the frame, a cutting blade mounted vertically on the output shaft of the cutting cylinder, and a cutting base plate mounted on the frame and located directly below the cutting blade.

[0016] The beneficial effects of this utility model are as follows:

[0017] This utility model has undergone structural improvements, which integrate the first and second punching devices into one unit, enabling it to perform two punching operations on the Mylar film sequentially. In other words, the two punching operations do not need to be performed by two separate devices, thereby greatly improving production efficiency and simplifying the structure of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of the first punching device of this utility model;

[0021] Figure 4 This is a partial structural diagram of the first punching device of this utility model. Figure 1 ;

[0022] Figure 5 This is a partial structural diagram of the first punching device of this utility model. Figure 2 ;

[0023] Figure 6 This is a partial structural diagram of the first punching device of this utility model. Figure 3 ;

[0024] Figure 7 This is a schematic diagram of the structure of the second punching device of this utility model. Figure 1 ;

[0025] Figure 8 This is a schematic diagram of the structure of the second punching device of this utility model. Figure 2 ;

[0026] Figure 9 This is a schematic diagram of the internal structure of the punching moving seat of the second punching device of this utility model;

[0027] Figure 10 This is a schematic diagram of the structure of the rear-pull material device of this utility model;

[0028] Figure 11 This is a longitudinal cross-sectional view of the Mylar membrane of this utility model;

[0029] Figure 12 This is a top view of the Mylar membrane of this utility model.

[0030] Figure Labels

[0031] 1. Frame; 11. Waste discharge port;

[0032] 2. Front feeding device; 21. Front feeding motor; 22. Front drive cylinder; 23. Front moving plate; 24. First front lower transmission rod; 25. First front active roller; 26. First front upper transmission rod; 27. First front passive roller;

[0033] 3. First punching device; 31. First left and right drive assembly; 311. First left and right motor; 312. First punching lead screw; 313. First punching slide block; 314. Support plate; 315. Feeding channel;

[0034] 32. First up-and-down drive assembly; 321. First up-and-down cylinder;

[0035] 33. Slide plate; 34. Lifting seat; 35. First punch cutter; 36. Suction cup assembly; 361. Suction cup drive cylinder; 362. Suction cup mounting plate; 363. Vacuum suction cup; 37. Inner mold; 371. Clearance hole; 372. Connecting rod;

[0036] 4. Second punching device; 41. Second left and right drive assembly; 411. Second left and right motor; 412. Second punching lead screw; 413. Second punching slide block;

[0037] 42. Second upper and lower drive assembly; 421. Punching moving seat; 422. Second upper and lower cylinder; 423. Groove; 424. Guide hole;

[0038] 43. Second punch cutter; 44. Material passage;

[0039] 5. Rear feeding device; 51. Rear feeding motor; 52. Rear drive cylinder; 53. Rear moving plate; 54. First rear lower transmission rod; 55. First rear active roller; 56. First rear upper transmission rod; 57. First rear passive roller; 58. Photoelectric encoder;

[0040] 6. Cutting device; 61. Cutting cylinder; 62. Cutting blade; 63. Cutting base plate;

[0041] 100. Mylar membrane; 1001. First layer structure; 1002. Second layer structure; 1003. Third layer structure. Detailed Implementation

[0042] The utility model will be further described below with reference to the accompanying drawings and specific embodiments. The following description is merely exemplary and does not limit the scope of protection of the utility model.

[0043] like Figures 1-10 As shown, a punching and cutting mechanism for a melanin film includes a front feeding device 2, a first punching device 3, a second punching device 4, a rear feeding device 5, and a cutting device 6, which are installed sequentially from front to back on a frame 1.

[0044] like Figures 1-6 As shown, the first punching device 3 includes a first left-right drive assembly 31, a first up-down drive assembly 32, a slide plate 33, a lifting seat 34, a first punching blade 35, a suction cup assembly 36, and an inner mold 37; the first left-right drive assembly 31 is mounted on the frame 1; the slide plate 33 is movably connected to the output end of the first left-right drive assembly 31; the first up-down drive assembly 32 is mounted on the slide plate 33; the lifting seat 34 is movably connected to the output end of the first up-down drive assembly 32; the first punching blade 35 and the suction cup assembly 36... 6 are respectively installed at the bottom of the lifting base 34; the inner mold 37 is fixedly connected to the slide plate 33 and located below the first punching blade 35 and the suction cup assembly 36. The inner mold 37 can be used to pass through the folded Mylar film 100 and place the first layer structure of the Mylar film 100 on the top surface of the inner mold 37; a clearance hole 371 is provided on the inner mold 37 for cooperating with the first punching blade 35; the first punching blade 35 can be used to punch the first layer structure at the top of the Mylar film 100, and the punched waste can be sent out through the suction cup assembly 36. Therefore, with the above arrangement, the slide plate 33, the first up and down driving assembly 32, the lifting base 34, the first punching blade 35, the suction cup assembly 36, and the inner mold 37 can be driven by the first left and right driving assembly 31 to move left and right simultaneously, so as to adjust the position of the first punching blade 35 and the suction cup assembly 36 accordingly, so as to adapt to the use of Mylar film 100 of different widths. In addition, the first up-down drive assembly 32 can also be used to drive the lifting seat 34, the first punching blade 35 and the suction cup assembly 36 to move up and down, so that the first punching blade 35 can punch the Mylar film 100, and the suction cup assembly 36 can suck away the punched waste.

[0045] like Figures 1-6 As shown, specifically, the top surface of one side of the inner mold 37 is connected to the slide plate 33 via the connecting rod 372, which facilitates the connection between the two, and leaves the other side of the top surface of the inner mold 37 to place the first layer structure 1001 of the Mylar film 100 so that the first punching blade 35 can punch it.

[0046] like Figures 7-9As shown, the second punching device 4 includes two second left-right drive assemblies 41, two second up-down drive assemblies 42, and two second punching blades 43; the two second left-right drive assemblies 41 are symmetrically mounted on the frame 1; the two second up-down drive assemblies 42 are movably mounted on the output ends of the two second left-right drive assemblies 41; a material passage 44 for the passage of the Mylar film 100 is formed between the two second up-down drive assemblies 42; a second punching blade 43 that can move up and down and is used to punch the Mylar film 100 is provided on the output end of each second up-down drive assembly 42; a waste hole 11 for cooperating with the second punching blade 43 is provided on the frame 1; the second punching blade 43 penetrates the Mylar film 100 vertically when punching the Mylar film 100. Therefore, the above configuration allows each second left-right drive assembly 41 to drive a second up-down drive assembly 42 and a second cutting blade 43 to move left and right, adjusting their positions to accommodate Mylar film 100 of different widths. Each second left-right drive assembly 41 can also drive a second cutting blade 43 to move up and down, allowing the second cutting blade 43 to perform a through-cut after the Mylar film 100 enters the material passage 44, with the waste material discharged directly through the waste hole 11. Of course, during the cutting process, the frame 1 can also support the Mylar film 100 to prevent stretching deformation during the cutting process.

[0047] In this embodiment, two second punching blades 43 spaced apart from each other can be installed on the output end of each second upper and lower drive component 42, so that the four second punching blades 43 can punch the four positions of the Mylar film 100 respectively.

[0048] like Figure 1As shown, in one specific embodiment, the front feeding device 2 includes a front feeding motor 21 mounted on the frame 1, a front drive cylinder 22 mounted on the frame 1, a front moving plate 23 movably mounted on the output shaft of the front drive cylinder 22, a first front lower transmission rod 24 rotatably mounted on the frame 1 and connected at one end to the output shaft of the front feeding motor 21, a first front active roller 25 mounted on the first front lower transmission rod 24, a first front upper transmission rod 26 rotatably mounted on the front moving plate 23 and located above the first front lower transmission rod 24, and a first front passive roller 27 mounted on the first front upper transmission rod 26 and cooperating with the first front active roller 25. Therefore, with the above configuration, the front pulling motor 21 can drive the first front lower transmission rod 24 and the first front active roller 25 to rotate simultaneously. During the rotation of the first front active roller 25, a gap is formed between the first front passive roller 27 and the first front active roller 25 to clamp the Mylar film 100. Thus, the first front active roller 25 and the first front passive roller 27 can pull the Mylar film 100 backward. The front drive cylinder 22 can be used to drive the front moving plate 23, the first front passive roller 27 and the first front upper transmission rod 26 to move up and down, thereby adjusting the width of the gap.

[0049] like Figures 1-6 As shown, in this embodiment, the cross-section of the first punching blade 35 is U-shaped and the opening on the side of the first punching blade 35 is set to one side and outward; the suction cup assembly 36 includes a suction cup driving cylinder 361, a suction cup mounting plate 362 and a vacuum suction cup 363; the suction cup driving cylinder 361 is mounted on the lifting base 34; the suction cup mounting plate 362 is mounted on the output end of the suction cup driving cylinder 361 and can be moved left and right; the vacuum suction cup 363 is mounted on the suction cup mounting plate 362 and can be moved into the opening of the first punching blade 35. With the above configuration, the first cutting blade 35, which has a U-shaped cross-section, can cut the edge of the first layer structure of the Mylar film 100 and cut out rectangular waste material when the first up-down drive assembly 32 drives it to descend. At the same time, the cut-out waste material is then picked up by the vacuum suction cup 363, which descends synchronously with the first cutting blade 35. Then, when the first up-down drive assembly 32 drives the first cutting blade 35 and the vacuum suction cup 363 to rise, the suction cup drive cylinder 361 drives the vacuum suction cup 363 to move laterally outward until it moves to the preset position. After that, the vacuum suction cup 363 unloads the waste material to complete the unloading operation.

[0050] like Figures 1-6As shown, the first left-right drive assembly 31 includes a first left-right motor 311 mounted on the frame 1, a first punching screw 312 connected to the output shaft of the first left-right motor 311, and a first punching slider 313 movably mounted on the first punching screw 312 and connected to the slide plate 33. Therefore, with the above arrangement, when the first left-right motor 311 drives the first punching screw 312 to rotate, it drives the first punching slider 313 to move left and right, simultaneously driving the slide plate 33 to move left and right. When the slide plate 33 moves left and right, it can also simultaneously drive the lifting seat 34, the first punching blade 35, and the vacuum suction cup 363 to move left and right, so as to adjust the position of the first punching blade 35 and the vacuum suction cup 363 according to the different widths of the Mylar film.

[0051] like Figures 1-6 As shown, the first up-and-down drive assembly 32 includes a first up-and-down cylinder 321; the first up-and-down cylinder 321 is mounted on the slide plate 33; the output shaft of the first up-and-down cylinder 321 is connected to the lifting seat 34. With the above configuration, the first up-and-down cylinder 321 can be used to drive the lifting seat 34 to move up and down, and simultaneously drive the first punching blade 35 and the vacuum suction cup 363 to move up and down.

[0052] like Figures 1-6 As shown, the first punching device 3 also includes a support plate 314; the support plate 314 is located below the inner mold 37 and a feeding channel 315 is formed between the support plate 314 and the inner mold 37. By setting the support plate 314, it can be used to support the Mylar film 100 that passes through the feeding channel 315, so as to avoid deformation of the Mylar film 100.

[0053] like Figures 7-9 As shown, each second left-right drive assembly 41 includes a second left-right motor 411 mounted on the frame 1, a second punching screw 412 connected to the output shaft of the second left-right motor 411, and a second punching slider 413 movably mounted on the second punching screw 412; each second punching slider 413 is correspondingly connected to a second up-down drive assembly 42. Therefore, with the above configuration, each second left-right drive assembly 41 can use the second left-right motor 411 to drive the second punching screw 412 to rotate, synchronously driving the second punching slider 413 to move left and right. In addition, the above configuration can be used to adjust the distance between the two second up-down drive assemblies 42 and the two second punching blades 35 to accommodate Mylar film 100 of different widths, making it highly practical.

[0054] like Figures 7-9As shown, each second up-and-down drive assembly 42 includes a punching moving seat 421 correspondingly connected to a second punching slider 413 and a second up-and-down cylinder 422 mounted on the punching moving seat 421; each second punching blade 43 is correspondingly mounted on the output shaft of a second up-and-down cylinder 422. With the above arrangement, the second up-and-down cylinder 422 mounted on the punching moving seat 421 can be used to drive the second punching blade 43 to move up and down, thereby facilitating the punching of the Mylar film 100.

[0055] like Figures 7-9 As shown, each of the two second upper and lower drive assemblies 42 has a front-to-back extending groove 423 on its opposite side surface, and a material passage 44 is formed between the two grooves 423. Each punching moving seat 421 is provided with a guide hole 424 for the second punching blade 43 to pass through, and its side is connected to the groove 423. Each guide hole 424 corresponds to the waste hole 11 located below it. With the above arrangement, the grooves 423 on both sides of the material passage 44 can be used to embed into the side edge of the Mylar film 100, thereby facilitating the subsequent punching of the edge portion of the Mylar film 100 embedded in the groove 423 by the second punching blade 43.

[0056] like Figure 10As shown, the rear pulling device 5 includes a rear pulling motor 51 mounted on the frame 1, a rear drive cylinder 52 mounted on the frame 1, a rear moving plate 53 movably mounted on the output shaft of the rear drive cylinder 52, a first rear lower transmission rod 54 rotatably mounted on the frame 1 and connected at one end to the output shaft of the rear pulling motor 51, a first rear active roller 55 mounted on the first rear lower transmission rod 54, a first rear upper transmission rod 56 rotatably mounted on the rear moving plate 53 and located above the first rear lower transmission rod 54, a first rear passive roller 57 mounted on the first rear upper transmission rod 56 and cooperating with the first rear active roller 55, and a photoelectric encoder 58 connected to one end of the first rear upper transmission rod 56. Therefore, with the above configuration, the rear pull motor 51 can drive the first rear lower transmission rod 54 and the first rear active roller 55 to rotate simultaneously. During the rotation of the first rear active roller 55, a gap is formed between the first rear passive roller 57 and the first rear active roller 55 to clamp the Mylar film 100, thereby allowing the first rear active roller 55 and the first rear passive roller 57 to pull the Mylar film 100 backward. The rear drive cylinder 52 can be used to drive the rear moving plate 53, the first rear passive roller 57, and the first rear upper transmission rod 56 to move up and down, thereby adjusting the width of the gap. In addition, the photoelectric encoder 58 can be used to record the number of rotations of the first rear upper transmission rod 56 and transmit the data to the control center. The control center can calculate the distance moved by the Mylar film 100 during the backward movement. When the Mylar film 100 moves to a preset distance, the control center then controls the cutting device 6 to cut the Mylar film 100. That is, the above configuration can continuously cut Mylar film of a specific length using the photoelectric encoder 38.

[0057] like Figure 2 As shown, the cutting device 6 includes a cutting cylinder 61 mounted on the frame 1, a cutting blade 62 movably mounted on the output shaft of the cutting cylinder 61, and a cutting base plate 63 mounted on the frame 1 and located directly below the cutting blade 62. This arrangement allows the Mylar film 100 to pass through the gap between the cutting blade 52 and the cutting base plate 63. When cutting is required, the cutting cylinder 61 directly drives the cutting blade 62 downwards, thereby enabling the cutting blade 62 to cut the Mylar film 100.

[0058] The specific working principle of this utility model is described below to help you understand it:

[0059] First, such as Figure 11 and Figure 12As shown, the Mylar film 100, after being bent, has both sides bent upwards and towards the center. The bent Mylar film 100 forms a first layer structure 1001, a second layer structure 1002, and a third layer structure 1003 from top to bottom. Since the Mylar film 100 is a single strip, initially, after being set by the staff, the bent Mylar film 100 will simultaneously be in the front pulling device 2, the first punching device 3, the second punching device 4, and the rear pulling device 5. Subsequently, the front pulling device 2 and the rear pulling device 5 can be used to stretch the Mylar film 100 taut and allow it to gradually move backwards.

[0060] Next, when the Mylar film 100 is located in the front pulling device 2, the front pulling motor 21 drives the first front active roller 25 to rotate, so that it can cooperate with the first front passive roller 27 to pull the Mylar film 100 backward.

[0061] Next, as the Mylar membrane 100 moves backward, since the inner mold 27 is inserted into the Mylar membrane 100, the first layer structure 1001 of the Mylar membrane 100 covers the top surface of the inner mold 27 on the side away from the connecting rod 372, while the second layer structure 1002 and the third layer structure 1003 of the Mylar membrane 100 are placed on the bottom surface of the inner mold 27 and supported by the support plate 314. Therefore, even if the Mylar membrane 100 continues to move, the three layers of the Mylar membrane 100 on the inner mold 27 will still be as designed above.

[0062] Next step, refer to Figure 11 and Figure 12 After the Mylar membrane 100 is moved into position, the first upper and lower cylinders 321 of the first punching device 3 drive the lifting seat 34, the first punching blade 35, and the vacuum suction cup 363 to move downward, so that the first punching blade 35 is inserted into the clearance hole 371 to complete the punching of the edge position of the first layer structure 1001. At this time, the punched waste is rectangular. At the same time, the vacuum suction cup 363 picks up the waste. Then, the first upper and lower cylinders 321 drive the first punching blade 35 and the vacuum suction cup 363 to move upward and reset. During the movement, the suction cup drive cylinder 361 drives the vacuum suction cup 363 to move laterally outward until it reaches the preset position. Then, the vacuum suction cup 363 releases and the waste falls into the preset position, thus completing the first punching of the Mylar membrane 100. Immediately afterwards, the front pulling device 2 and the rear pulling device 5 continue to pull the Mylar membrane 100 backward.

[0063] Next step, refer to Figure 11 and Figure 12When the Mylar membrane 100 moves to the material passage 44, its two sides will be respectively embedded into the two grooves 423. At this time, since one side of the Mylar membrane 100 only has the first layer structure 1001 and the third layer structure 1003 and the other side only has the second layer structure 1002 and the third layer structure 1003, when the two second upper and lower cylinders 422 drive the two second punching blades 43 to move downward to the waste hole 11, corresponding vertical through-holes will be punched on both sides of the Mylar membrane 100, and the punched waste will be discharged directly downward from the waste hole 11, thus completing the second punching of the Mylar membrane 100. Of course, the hole formed by the second punching is separated from the hole formed by the first punching. Then, the two second punching blades 43 return to their original position. Immediately afterwards, the front pulling device 2 and the rear pulling device 5 continue to pull the Mylar membrane 100 backward.

[0064] Next, when the Mylar film 100 is located in the rear pulling device 5, the rear pulling motor 51 drives the first rear active roller 55 to rotate, so that it can cooperate with the first rear passive roller 57 to pull the Mylar film 100 backward and through the gap between the cutting blade 62 and the cutting base plate 63; at the same time, the photoelectric encoder 58 records the number of rotations of the first rear upper transmission rod 56.

[0065] Next, when the first rear upper transmission rod 56 reaches the preset number of rotations, the cutting cylinder 61 drives the cutting blade 62 to move downwards until it abuts against the cutting base plate 63, and the cut Mylar film 100, which has undergone two punching operations, falls into the next process.

[0066] In summary, through structural improvements, this utility model integrates the first punching device 3 and the second punching device 4 into a single unit, enabling it to perform two punching operations on the Mylar film 100 sequentially. This means that the two punching operations do not require two separate devices, thereby greatly improving production efficiency and simplifying the equipment structure.

[0067] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A punching and cutting mechanism for Mylar film, characterized in that: It includes a front feeding device, a first punching device, a second punching device, a rear feeding device, and a cutting device, which are installed sequentially from front to back on a frame; The first punching device includes a first left-right drive assembly, a first up-down drive assembly, a slide plate, a lifting seat, a first punching blade, a suction cup assembly, and an inner mold; the first left-right drive assembly is mounted on the frame; The sliding plate is movably connected to the output end of the first left-right drive assembly; the first up-down drive assembly is mounted on the sliding plate; the lifting seat is movably connected to the output end of the first up-down drive assembly; the first punching blade and the suction cup assembly are respectively mounted on the bottom of the lifting seat; the inner mold is fixedly connected to the sliding plate and located below the first punching blade and the suction cup assembly; the inner mold can be used to pass through the folded Mylar film and place the first layer structure of the Mylar film on the top surface of the inner mold; the inner mold is provided with clearance holes for cooperating with the first punching blade; The first punching blade can be used to punch the first layer structure on top of the Mylar membrane, and the punched waste can be sent out through the suction cup assembly; The second punching device includes two second left-right drive assemblies, two second up-down drive assemblies, and two second punching blades; Two second left-right drive components are symmetrically mounted on the frame; two second up-down drive components are symmetrically mounted on the output ends of the two second left-right drive components, respectively, and are movable left-right; a material passage for the passage of the Mylar film is formed between the two second up-down drive components; a second punching blade that can move up and down and is used to punch the Mylar film is provided on the output end of each second up-down drive component; a waste hole for cooperating with the second punching blade is provided on the frame; the second punching blade penetrates the Mylar film vertically when punching the Mylar film.

2. The punching and cutting mechanism for Mylar film according to claim 1, characterized in that: The first punching cutter has a long "U" shaped cross-section and the opening on the side of the first punching cutter is set to one side and outward; The suction cup assembly includes a suction cup driving cylinder, a suction cup mounting plate, and a vacuum suction cup; the suction cup driving cylinder is mounted on the lifting base; the suction cup mounting plate is movably mounted on the output end of the suction cup driving cylinder; the vacuum suction cup is mounted on the suction cup mounting plate and can be moved into the opening of the first punching blade.

3. The punching and cutting mechanism for Mylar film according to claim 1, characterized in that: The first left and right drive assembly includes a first left and right motor mounted on the frame, a first punching screw connected to the output shaft of the first left and right motor, and a first punching slider that is movable left and right on the first punching screw and connected to the slide plate.

4. The punching and cutting mechanism for Mylar film according to claim 1, characterized in that: The first up-and-down drive assembly includes a first up-and-down cylinder; the first up-and-down cylinder is mounted on the slide plate; the output shaft of the first up-and-down cylinder is connected to the lifting seat.

5. The punching and cutting mechanism for Mylar film according to claim 1, characterized in that: The first punching device also includes a support plate; the support plate is located below the inner mold and a feeding channel is formed between the support plate and the inner mold.

6. The punching and cutting mechanism for Mylar film according to claim 1, characterized in that: Each of the second left and right drive components includes a second left and right motor mounted on the frame, a second punching screw connected to the output shaft of the second left and right motor, and a second punching slide that is movable left and right on the second punching screw; each of the second punching slides is connected to a corresponding second up and down drive component.

7. The punching and cutting mechanism for Mylar film according to claim 6, characterized in that: Each of the second up-and-down drive components includes a punching moving seat correspondingly connected to a second punching slide and a second up-and-down cylinder mounted on the punching moving seat; each of the second punching blades is correspondingly mounted on the output shaft of a second up-and-down cylinder.

8. The punching and cutting mechanism for Mylar film according to claim 7, characterized in that: Each of the two second upper and lower drive assemblies has a groove extending from front to back on the opposite side of the punching moving seat, and the material passage is formed between the two grooves; each punching moving seat is provided with a guide hole for the second punching blade to pass through and the side of the guide hole is connected to the groove; each guide hole corresponds to the waste hole located below it.

9. The punching and cutting mechanism for Mylar film according to claim 1, characterized in that: The rear material pulling device includes a rear material pulling motor mounted on the frame, a rear drive cylinder mounted on the frame, a rear moving plate movably mounted on the output shaft of the rear drive cylinder, a first rear lower transmission rod rotatably mounted on the frame and one end connected to the output shaft of the rear material pulling motor, a first rear active roller mounted on the first rear lower transmission rod, a first rear upper transmission rod rotatably mounted on the rear moving plate and located above the first rear lower transmission rod, a first rear passive roller mounted on the first rear upper transmission rod and cooperating with the first rear active roller, and a photoelectric encoder connected to one end of the first rear upper transmission rod.

10. The punching and cutting mechanism for Mylar film according to claim 1, characterized in that: The cutting device includes a cutting cylinder mounted on the frame, a cutting blade mounted vertically on the output shaft of the cutting cylinder, and a cutting base plate mounted on the frame and located directly below the cutting blade.

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