A trimming device for a hot-pressed edge-wrapping die part after forming

Abstract

The present invention relates to the field of part processing, and particularly to a trimming device for a hot-press hemming die part after forming. The technical problem is that the existing trimming device is difficult to perform cutting while trimming a polymer film, resulting in a relatively low flatness of the cutting edge and affecting the trimming quality. A trimming device for a hot-press hemming die part after forming includes a box body, a placement groove is formed inside the box body, a workpiece is placed on the placement groove of the box body, two electric push rods are fixedly connected inside the box body, the two electric push rods are symmetrically arranged, and four push wheels are fixedly connected to the bottom of the box body. By pressing the excess polymer film of the workpiece onto the support plate with a pressing plate, when the cutting knife continues to move, it will contact the excess polymer film of the workpiece, and then cut off the excess polymer film of the workpiece. In this way, the cutting knife is used to perform synchronous cutting on the polymer film, which can trim the excess polymer film of the workpiece more smoothly and improve the trimming quality.

Description

Technical Field

[0001] The present invention relates to the field of part processing, and particularly to a trimming device for a hot press hemming die part after forming. Background Art

[0002] Hot press hemming refers to bonding a thermoplastic polymer film to a substrate by means of hot pressing, so that the edge of the substrate is wrapped by the thermoplastic polymer film, thereby improving the wear resistance, waterproofness, anti-corrosion and dust-proof properties of the substrate. After some existing workpieces are subjected to hot press hemming treatment, there are many unbonded polymer films left on the inner wall of the workpiece. The edges of these excess polymer films are uneven, affecting the appearance of the workpiece. Therefore, the excess polymer film on the inner wall of the workpiece needs to be trimmed. However, during the trimming process of the excess polymer film on the inner wall of the workpiece by the existing trimming device, it is difficult to cut the polymer film simultaneously, resulting in a low flatness of the cutting edge of the polymer film and affecting the trimming quality. Summary of the Invention

[0003] The object of the present invention is to solve the deficiencies of the above-mentioned existing technologies, and provide a trimming device for a hot press hemming die part after forming, which can synchronously cut the polymer film, thereby trimming the polymer film more flatly and improving the trimming quality.

[0004] Technical Solution: A trimming device for a hot press hemming die part after forming, comprising a box body. A placement groove is formed inside the box body, and a workpiece is placed in the placement groove of the box body. Two electric push rods are fixedly connected inside the box body, and the two electric push rods are symmetrically arranged. Four push wheels are fixedly connected to the bottom of the box body. A scraping component and a cutting component are provided on the electric push rods. The scraping component is used to scrape up the excess polymer film on the workpiece, and the cutting component is used to cut the excess polymer film on the workpiece flat.

[0005] As an improvement of the above solution, the scraping component includes an installation frame. The telescopic rods of the two electric push rods are fixedly connected with the installation frame. A support plate is fixedly connected to the installation frame. Two short scraping plates and two long scraping plates are slidably connected to the support plate. The two short scraping plates are symmetrically arranged, and the two long scraping plates are symmetrically arranged. A plurality of compression springs I are connected between the two short scraping plates and the support plate, and a plurality of the compression springs I are connected between the two long scraping plates and the support plate.

[0006] As an improvement of the above solution, the cutting component includes an electric hydraulic cylinder, the electric hydraulic cylinder is fixedly connected to the mounting frame, the telescopic rod of the electric hydraulic cylinder is fixedly connected to a pressing frame, the pressing frame is slidably connected to the mounting frame, a pressing plate is slidably connected to the pressing frame, a plurality of second pressure springs are connected between the pressing plate and the pressing frame, and a cutting knife is fixedly connected to the pressing frame.

[0007] As an improvement of the above solution, it further includes a tensioning component. The tensioning component is arranged on the pressing plate and is used to tension the redundant polymer film to assist the cutting component. The tensioning component includes a rotating mounting block. Four rotating mounting blocks are fixedly connected to the pressing plate. A short roller is rotatably connected between two of the rotating mounting blocks, and another short roller is rotatably connected between the other two rotating mounting blocks. A long roller is rotatably connected between two of the rotating mounting blocks, and another long roller is rotatably connected between the other two rotating mounting blocks. Two column gears are fixedly connected to each short roller and each long roller. A plurality of toothed rods are slidably connected to the pressing frame, and a third pressure spring is connected between the toothed rod and the pressing frame.

[0008] As an improvement of the above solution, the number of the column gears is the same as the number of the toothed rods.

[0009] As an improvement of the above solution, the bottoms of the short roller and the long roller are located on the same horizontal plane as the bottom surface of the pressing plate.

[0010] As an improvement of the above solution, it further includes a cutting auxiliary component. The cutting auxiliary component is arranged on the support plate and is used to further assist the cutting knife to better cut the redundant polymer film on the workpiece. The cutting auxiliary component includes a sliding cutter. The sliding cutter is slidably connected to the support plate. Four rotating shafts are fixedly connected to the support plate. A swinging frame is rotatably connected to each rotating shaft, and each swinging frame is slidably connected to the sliding cutter. Four pressing rods are slidably connected to the support plate.

[0011] As an improvement of the above solution, the sliding cutter is located directly below the cutting knife, and the sliding cutter is arranged in the opposite direction to the cutting knife.

[0012] As an improvement of the above solution, the bottom of each pressing rod is in contact with each swinging frame respectively.

[0013] As an improvement of the above solution, it further includes telescopic mounting rods. Four telescopic mounting rods are slidably connected to the pressing frame. Two telescopic mounting rods on the same side form a group. A positioning roller is rotatably connected between the two telescopic mounting rods in each group. There are two positioning rollers in total. A compression spring four is connected between each telescopic mounting rod and the pressing frame.

[0014] The present invention has the following advantages: 1. When the telescopic rod of the electric hydraulic cylinder extends, it will drive the pressing frame, the pressing plate and the cutting knife to move together in the direction close to the workpiece. During the movement of the pressing plate, the excess polymer film of the workpiece will be pressed against the supporting plate. As the pressing frame continues to move, the pressing plate is blocked by the supporting plate and cannot move, and the compression spring two is compressed. When the cutting knife continues to move, it will contact the excess polymer film of the workpiece, and then cut off the excess polymer film of the workpiece. By using the cutting knife to synchronously cut the polymer film in this way, the excess polymer film of the workpiece can be trimmed more smoothly, improving the trimming quality.

[0015] 2. During the movement of the pressing frame towards the workpiece, the short roller column and the long roller column will press the excess polymer film on the workpiece together with the pressing plate. As the pressing frame continues to move, the pressing frame will drive the toothed rod to move in the direction close to the workpiece. During the movement of the toothed rod, it will engage with the column gear, causing the column gear to rotate. The rotation of the column gear will drive the short roller column and the long roller column to rotate respectively. The rotation of the short roller column and the long roller column will pull the excess polymer film on the workpiece in the direction away from the pressing plate, thereby making the excess polymer film on the workpiece taut. By using this method, the excess polymer film on the workpiece can be made taut, enabling the cutting knife to better cut the polymer film and improving the flatness of the polymer film cutting.

[0016] 3. The pressing frame will squeeze the pressing rod, causing the pressing rod to move in the direction close to the workpiece. The pressing rod will squeeze one end of the swinging frame, causing the swinging tube to swing. The other end of the swinging frame will swing in the direction away from the workpiece. The swinging frame will drive the sliding cutting knife to move in the direction away from the workpiece, so that the sliding cutting knife will extend out and contact the polymer film, and then cut the polymer film together with the cutting knife. By using this method, the cutting knife can be further assisted in cutting the polymer film, further improving the flatness of the polymer film cut edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 It is a three-dimensional sectional structural schematic diagram of the box body of the present invention.

[0019] Figure 3 It is a partial three-dimensional structural schematic diagram of the present invention.

[0020] Figure 4 This is a three-dimensional structural schematic diagram of the mounting frame and the support plate of the present invention.

[0021] Figure 5 This is a three-dimensional structural schematic diagram of the horizontal cross-section of the support plate of the present invention.

[0022] Figure 6 For the present invention Figure 5 An enlarged three-dimensional structural schematic diagram of part A in it.

[0023] Figure 7 This is a cross-sectional three-dimensional structural schematic diagram of the pressing frame of the present invention.

[0024] Figure 8 This is a three-dimensional structural schematic diagram of the cutting knife, the pressing plate and the second pressure spring of the present invention.

[0025] Figure 9 This is a disassembled three-dimensional structural schematic diagram of the cutting component of the present invention.

[0026] Figure 10 This is a three-dimensional structural schematic diagram of the rotating mounting block, the telescopic mounting rod and the fourth pressure spring of the present invention.

[0027] Figure 11 This is a three-dimensional structural schematic diagram of the long roller column, the short roller column and the positioning roller of the present invention.

[0028] Figure 12 This is a three-dimensional structural schematic diagram of the toothed rod and the third pressure spring of the present invention.

[0029] Figure 13 This is a disassembled three-dimensional structural schematic diagram of the tensioning component of the present invention.

[0030] Figure 14 This is a three-dimensional structural schematic diagram of the long scraping plate, the pressing rod and the short scraping plate of the present invention.

[0031] Figure 15 This is a three-dimensional structural schematic diagram of the sliding cutting knife and the pressing rod of the present invention.

[0032] Figure 16 For the present invention Figure 15 An enlarged three-dimensional structural schematic diagram of part B in it.

[0033] Names of the reference numerals in the figure: 1. Box body, 2. Workpiece to be processed, 3. Electric push rod, 4. Push wheel, 51. Installation frame, 52. Support plate, 53. Short scraper, 54. Long scraper, 55. First compression spring, 61. Electric hydraulic cylinder, 62. Pressing frame, 63. Pressing plate, 64. Second compression spring, 65. Cutting knife, 71. Rotating installation block, 72. Short roller, 73. Long roller, 74. Cylindrical gear, 75. Rack, 76. Third compression spring, 81. Sliding cutting knife, 82. Rotating shaft, 83. Swing frame, 84. Pressing rod, 9. Telescopic installation rod, 10. Positioning roller, 11. Fourth compression spring. Detailed implementation mode

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1: A trimming device for a hot-pressed edge-wrapped mold part after forming, as Figures 1-16 shown, includes a box body 1. A placement groove is formed inside the box body 1. A workpiece to be processed 2 is placed on the placement groove of the box body 1. Two electric push rods 3 are connected to the box body 1 by bolts. The two electric push rods 3 are symmetrically arranged. Four push wheels 4 are connected to the bottom of the box body 1 by bolts. A scraping component and a cutting component are provided on the electric push rod 3. The scraping component is used to scrape up the excess polymer film on the workpiece to be processed 2, and the cutting component is used to cut the excess polymer film on the workpiece to be processed 2 flat.

[0036] The scraping component includes an installation frame 51. The installation frame 51 is connected to the telescopic rods of the two electric push rods 3 by bolts. A support plate 52 is connected to the installation frame 51 by bolts. Two short scrapers 53 and two long scrapers 54 are slidably connected to the support plate 52. The two short scrapers 53 are symmetrically arranged, and the two long scrapers 54 are symmetrically arranged. The long scrapers 54 and the short scrapers 53 are used to scrape up the excess polymer film. A number of first compression springs 55 are connected between the two short scrapers 53 and the support plate 52, and a number of the first compression springs 55 are connected between the two long scrapers 54 and the support plate 52.

[0037] The cutting component includes an electric hydraulic cylinder 61. The electric hydraulic cylinder 61 is bolted to the mounting frame 51. A pressing frame 62 is bolted to the telescopic rod of the electric hydraulic cylinder 61. The pressing frame 62 is slidably connected to the mounting frame 51. A pressing plate 63 is slidably connected to the pressing frame 62. A number of second pressure springs 64 are connected between the pressing plate 63 and the pressing frame 62. A cutting knife 65 is threadedly connected to the pressing frame 62. The cutting knife 65 is used to cut the excess polymer film on the inner wall of the workpiece 2.

[0038] At first, the user places the processed part 2 with hot-pressed edge binding on the placement groove of the box body 1. Then, the user manually aligns the position of the processed part 2. After the processed part 2 is placed in position, the user starts the electric push rod 3. The telescopic rod of the electric push rod 3 will extend. The extension of the telescopic rod of the electric push rod 3 will drive the support plate 52, the electric hydraulic cylinder 61 and the pressing frame 62 to move towards the processed part 2. During the movement of the pressing frame 62, both the long scraping plate 54 and the short scraping plate 53 will be squeezed by the processed part 2, causing the short scraping plate 53 and the long scraping plate 54 to extend into the support plate 52, compressing the first pressure spring 55. The telescopic rod of the electric push rod 3 continues to extend, causing the support plate 52 to extend into the processed part 2. As the support plate 52 continues to extend, the short scraping plate 53 and the long scraping plate 54 will disengage from the processed part 2. The reset of the first pressure spring 55 drives the short scraping plate 53 and the long scraping plate 54 to reset. Subsequently, the telescopic rod of the electric push rod 3 retracts. The retraction of the telescopic rod of the electric push rod 3 will drive the support plate 52 to move in the reverse direction. The reverse movement of the support plate 52 will cause the short scraping plate 53 and the long scraping plate 54 to contact the processed part 2 again. The long scraping plate 54 and the short scraping plate 53 will extend into the support plate 52 under the extrusion of the processed part 2, and the first pressure spring 55 will be compressed again. The telescopic rod of the electric push rod 3 continues to retract, and the short scraping plate 53 and the long scraping plate 54 will fit against the inner wall of the processed part 2. The movement of the support plate 52 will drive the short scraping plate 53 and the long scraping plate 54 to move together. As a result, the excess polymer film on the processed part will be scraped up by the short scraping plate 53 and the long scraping plate 54, causing the excess polymer film of the processed part 2 to be placed on the support plate 52. After the top of the support plate 52 is flush with the top of the processed part, the telescopic rod of the electric push rod 3 stops retracting. Then, the user starts the electric hydraulic cylinder 61. The telescopic rod of the electric hydraulic cylinder 61 will extend. The extension of the telescopic rod of the electric hydraulic cylinder 61 will drive the pressing frame 62, the pressing plate 63 and the cutting knife 65 to move towards the processed part 2 together. During the movement of the pressing plate 63, the excess polymer film of the processed part 2 will be pressed against the support plate 52. As the pressing frame 62 continues to move, the pressing plate 63 is blocked by the support plate 52 and cannot move, and the second pressure spring 64 is compressed. The cutting knife 65 continues to move and will contact the excess polymer film of the processed part 2, thereby cutting off the excess polymer film of the processed part 2. Subsequently, the telescopic rod of the electric hydraulic cylinder 61 retracts. The retraction of the telescopic rod of the electric hydraulic cylinder 61 will drive the pressing frame 62, the pressing plate 63 and the cutting knife 65 to reset. After the pressing plate 63 disengages from the support plate 52, the reset of the second pressure spring 64 drives the pressing plate 63 to reset. Then, the telescopic rod of the electric push rod 3 further retracts. The retraction of the telescopic rod of the electric push rod 3 will drive the support plate 52, the electric hydraulic cylinder 61 and the pressing frame 62 to reset. After the short scraping plate 53 and the long scraping plate 54 disengage from the processed part 2, the reset of the first pressure spring 55 drives the short scraping plate 53 and the long scraping plate 54 to reset. After the telescopic rod of the electric push rod 3 resets, the user takes out the processed part that has been cut from the placement groove of the box body 1, completing the edge binding and trimming treatment of the processed part 2. By using the cutting knife 65 to synchronously cut the polymer film in this way, the excess polymer film of the processed part 2 can be trimmed more smoothly.Improve the trimming quality.

[0039] Embodiment 2: On the basis of Embodiment 1, as Figures 10-16 shown, it further includes a tensioning member. The tensioning member is provided on the pressing plate 63. The tensioning member is used to assist the cutting member to better cut the excess polymer film on the workpiece 2. The tensioning member includes a rotating mounting block 71. Four rotating mounting blocks 71 are welded on the pressing plate 63. A short roller 72 is rotatably connected between two of the rotating mounting blocks 71, and another short roller 72 is rotatably connected between the other two rotating mounting blocks 71. A long roller 73 is rotatably connected between two of the rotating mounting blocks 71, and another long roller 73 is rotatably connected between the other two rotating mounting blocks 71. The long roller 73 and the short roller 72 are used to pull the excess polymer film. Two column gears 74 are fixedly connected to each short roller 72 and each long roller 73. A plurality of toothed rods 75 are slidably connected to the pressing frame 62. The toothed rods 75 are used to drive the column gears 74 to rotate. A third compression spring 76 is connected between the toothed rods 75 and the pressing frame 62.

[0040] The number of the column gears 74 is the same as the number of the toothed rods 75.

[0041] The bottoms of the short roller 72 and the long roller 73 and the bottom surface of the pressing plate 63 are located on the same horizontal plane, so that the short roller 72, the long roller 73 and the pressing plate 63 can press the polymer film simultaneously.

[0042] It further includes a cutting auxiliary member. The cutting auxiliary member is provided on the support plate 52. The tensioning member is used to tension the excess polymer film to assist the cutting member. The cutting auxiliary member includes a sliding cutter 81. The sliding cutter 81 is slidably connected to the support plate 52. Four rotating shafts 82 are welded on the support plate 52. A swing frame 83 is rotatably connected to each rotating shaft 82. Each swing frame 83 is slidably connected to the sliding cutter 81. The swinging of the swing frame 83 will drive the sliding cutter 81 to move. Four pressing rods 84 are slidably connected to the support plate 52.

[0043] The sliding cutter 81 is located directly below the cutting knife 65, and the sliding cutter 81 and the cutting knife 65 are arranged in opposite directions, so that the cut edge of the polymer film is cut more smoothly.

[0044] The bottom of each pressing rod 84 contacts each swing frame 83 respectively.

[0045] During the process of the pressing frame 62 moving towards the workpiece 2, the short roller 72 and the long roller 73, together with the pressing plate 63, will press the excess polymer film on the workpiece 2. As the pressing frame 62 continues to move, the pressing frame 62 will drive the toothed rod 75 to move towards the workpiece 2. During the movement of the toothed rod 75, it will engage with the column gear 74, causing the column gear 74 to rotate. The rotation of the column gear 74 will drive the short roller 72 and the long roller 73 to rotate respectively. The rotation of the short roller 72 and the long roller will pull the excess polymer film on the workpiece 2 away from the pressing plate 63, thereby making the excess polymer film on the workpiece 2 taut. As the pressing frame 62 continues to move, the cutting knife 65 will cut the excess polymer film on the workpiece 2. The toothed rod 75 will contact the support plate 52, and under the extrusion of the support plate 52, the toothed rod 75 will extend into the pressing frame 62, and the third pressure spring 76 will be compressed. After the cutting is completed, the pressing frame 62 moves in the reverse direction to reset. The reset of the pressing frame 62 will drive the toothed rod 75 to reset, and the reset of the third pressure spring 76 will drive the toothed rod 75 to extend out of the pressing frame 62. In this way, the excess polymer film on the workpiece 2 can be made taut, enabling the cutting knife 65 to better cut the polymer film and improving the flatness of the cutting of the polymer film.

[0046] When the pressing frame 62 moves towards the workpiece 2 and the toothed rod 75 extends into the pressing frame 62, the pressing frame 62 will squeeze the pressing rod 84, causing the pressing rod 84 to move towards the workpiece 2. The pressing rod 84 will squeeze one end of the swinging frame 83, causing the swinging tube to swing. The other end of the swinging frame 83 will swing away from the workpiece 2. The swinging frame 83 will drive the sliding cutting knife 81 to move away from the workpiece, causing the sliding cutting knife 81 to extend out of the support plate 52 and contact the polymer film, and then cut the polymer film together with the cutting knife 65. After the pressing frame 62 resets, the pressing rod 84 is no longer squeezed by the pressing frame 62, and the sliding cutting knife 81 resets under the action of gravity. The reset of the sliding cutting knife 81 will drive the swinging frame 83 to reset, and the reset of the swinging frame 83 will drive the pressing rod 84 to reset. In this way, it can further assist the cutting knife 65 to cut the polymer film and further improve the flatness of the cut edge of the polymer film.

[0047] Embodiment 3: On the basis of Embodiment 2, as Figures 10-12 shown, it further includes a telescopic mounting rod 9. Four telescopic mounting rods 9 are slidably connected to the pressing frame 62. Two telescopic mounting rods 9 on the same side are taken as a group. A positioning roller 10 is rotatably connected between the two telescopic mounting rods 9 in each group. There are two positioning rollers 10 in total. The positioning rollers 10 are used to assist in positioning the workpiece 2. A fourth pressure spring 11 is connected between each telescopic mounting rod 9 and the pressing frame 62.

[0048] During the process of the pressing frame 62 moving towards the workpiece 2, the positioning roller wheels 10 on both sides of the pressing frame 62 will contact the workpiece 2. As the pressing frame 62 continues to move, the positioning roller wheels 10 will squeeze the workpiece 2, causing the telescopic mounting rod 9 to extend into the pressing frame 62, and the fourth pressure spring 11 to be compressed. During the process of the positioning roller wheels 10 squeezing the workpiece 2, the workpiece 2 will slide in the placement groove of the box body 1 under the extrusion, so that the position of the workpiece 2 will be corrected to the processing position. During the movement of the workpiece 2, the positioning roller wheels 10 will rotate, thereby reducing the friction between the positioning roller wheels 10 and the workpiece 2. After the trimming is completed, the pressing frame 62 resets, and the reset of the pressing frame 62 drives the positioning roller wheels 10 and the telescopic mounting rod 9 to reset, so that the extrusion force of the positioning roller wheels 10 on the workpiece 2 gradually decreases. The reset of the fourth pressure spring 11 drives the telescopic mounting rod 9 to extend out of the pressing frame 62. In this way, the workpiece can be positioned to the processing position more quickly, improving the work efficiency.

[0049] The above-described embodiments only represent the preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations, improvements and substitutions can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A trimming device for a hot-pressed edge-bonding die part after forming, characterized in that, It includes a box body (1). A placement groove is formed inside the box body (1). A workpiece (2) is placed on the placement groove of the box body (1). Two electric push rods (3) are fixedly connected inside the box body (1). The two electric push rods (3) are symmetrically arranged. Four push wheels (4) are fixedly connected to the bottom of the box body (1). A skin scraping component and a cutting component are arranged on the electric push rod (3). The skin scraping component is used to scrape up the excess polymer film on the workpiece (2). The cutting component is used to cut the excess polymer film on the workpiece (2) flat; The skin scraping component includes an installation frame (51). The installation frame (51) is fixedly connected between the telescopic rods of the two electric push rods (3). A support plate (52) is fixedly connected to the installation frame (51). Two short scraping plates (53) and two long scraping plates (54) are slidably connected to the support plate (52). The two short scraping plates (53) are symmetrically arranged. The two long scraping plates (54) are symmetrically arranged. A number of first pressure springs (55) are connected between the two short scraping plates (53) and the support plate (52). A number of the first pressure springs (55) are connected between the two long scraping plates (54) and the support plate (52); The cutting component includes an electric hydraulic cylinder (61). The electric hydraulic cylinder (61) is fixedly connected to the installation frame (51). A pressing frame (62) is fixedly connected to the telescopic rod of the electric hydraulic cylinder (61). The pressing frame (62) is slidably connected to the installation frame (51). A pressing plate (63) is slidably connected to the pressing frame (62). A number of second pressure springs (64) are connected between the pressing plate (63) and the pressing frame (62). A cutting knife (65) is fixedly connected to the pressing frame (62); It further includes a tensioning component. The tensioning component is arranged on the pressing plate (63). The tensioning component is used to tension the excess polymer film to assist the cutting component. The tensioning component includes a rotating mounting block (71). Four rotating mounting blocks (71) are fixedly connected to the pressing plate (63). A short roller column (72) is rotatably connected between two of the rotating mounting blocks (71). Another short roller column (72) is rotatably connected between the other two rotating mounting blocks (71). A long roller column (73) is rotatably connected between two of the rotating mounting blocks (71). Another long roller column (73) is rotatably connected between the other two rotating mounting blocks (71). Two column gears (74) are fixedly connected to each short roller column (72) and each long roller column (73). A number of toothed rods (75) are slidably connected to the pressing frame (62). A third pressure spring (76) is connected between the toothed rod (75) and the pressing frame (62).

2. The trimming device for the formed hot-pressed edge-bonding die parts as described in claim 1, characterized in that, The number of the column gears (74) is the same as the number of the toothed rods (75).

3. The trimming device for a hot-pressed edge-wrapping die part after molding according to claim 1, characterized in that, The bottoms of the short roller column (72) and the long roller column (73) are on the same horizontal plane as the bottom surface of the pressing plate (63).

4. The trimming device for a hot pressing edge wrapping die part after molding according to claim 1, characterized in that, It further includes a cutting auxiliary component, the cutting auxiliary component is provided on the support plate (52), and the cutting auxiliary component is used to further assist the cutting knife (65) to better cut the redundant polymer film on the workpiece (2). The cutting auxiliary component includes a sliding cutting knife (81), the sliding cutting knife (81) is slidably connected to the support plate (52), four rotating shafts (82) are fixedly connected to the support plate (52), and a swing frame (83) is rotatably connected to each rotating shaft (82). Each swing frame (83) is slidably connected to the sliding cutting knife (81), and four pressing rods (84) are slidably connected to the support plate (52).

5. The trimming device for a hot press edge wrapping die part after forming according to claim 4, characterized in that, The sliding cutting knife (81) is located directly below the cutting knife (65), and the sliding cutting knife (81) is arranged in the opposite direction to the cutting knife (65).

6. The trimming device for a hot press edge-wrapping die part after forming according to claim 4, characterized in that, The bottom of each pressing rod (84) contacts each swing frame (83) respectively.

7. The trimming device for a hot pressing edge wrapping die part after molding according to claim 4, characterized in that, It further includes telescopic mounting rods (9), four telescopic mounting rods (9) are slidably connected to the pressing frame (62), two telescopic mounting rods (9) on the same side are taken as a group, a positioning roller (10) is rotatably connected between the two telescopic mounting rods (9) in each group, there are two positioning rollers (10) in total, and a fourth compression spring (11) is connected between each telescopic mounting rod (9) and the pressing frame (62).

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