3C semi-finished product die-cutting device with precise fitting positioning function

Abstract

The application relates to the technical field of die cutting, in particular to a 3C semi-finished product die cutting device with precise fitting positioning function, which comprises a first die cutting main body, a second die cutting main body and a third die cutting main body, the first die cutting main body and the third die cutting main body are distributed outside the two ends of the second die cutting main body, the second die cutting main body comprises a first limiting adjusting part, a side adjusting part, a second limiting adjusting part and a die cutting device, and the side adjusting part is arranged on the two sides of the die cutting device. The material is pushed horizontally by the pushing and adjusting plate of the two side adjusting parts, the limiting frame of the limiting adjusting part at the two ends and the rotating wheel are matched to limit the material body up and down, the multi-layer flexible base material can be forced to push to the center position of the die cutting area, the material body conveying deviation problem is solved, precise fitting positioning is realized, and the die cutting efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of die-cutting technology, specifically to a 3C semi-finished product die-cutting device with precise fitting and positioning function. Background Technology

[0002] In the production and processing of 3C products, the die-cutting process is one of the core links. It is mainly used to cut the multi-layer structure of 3C semi-finished raw materials, such as flexible substrates and adhesive films, to a specified depth and number of layers on both sides. As 3C products are rapidly developing towards thinner, smaller, and more precise designs, the precision requirements for die-cutting are becoming increasingly stringent. Among them, the bonding and positioning accuracy of 3C semi-finished products in the die-cutting process directly determines the pass rate and product performance of the die-cut products.

[0003] Existing die-cutting equipment cannot complete multi-layer cutting in one go, and during the die-cutting process, it cannot ensure that the flexible composite substrate is stably and accurately conveyed through the middle of the die-cutting equipment with a stable specified tension. Furthermore, it cannot complete the die-cutting of multiple different specifications in one go, requiring multiple die-cutting processes of different degrees, which greatly reduces the efficiency of production. Therefore, a 3C semi-finished product die-cutting device with precise fitting and positioning function is needed to solve the above problems. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a 3C semi-finished product die-cutting device with precise fitting and positioning function.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a 3C semi-finished product die-cutting device with precise fitting and positioning function, including a first die-cutting body, a second die-cutting body and a third die-cutting body. The first die-cutting body and the third die-cutting body are distributed on the outer sides of both ends of the second die-cutting body. The second die-cutting body includes a first limiting adjustment part, a side adjustment part, a second limiting adjustment part and a die-cutting device. The side adjustment part is disposed on both sides of the die-cutting device. The first limiting adjustment part and the second limiting adjustment part are symmetrically distributed at both ends of the die-cutting device, and the first limiting adjustment part and the second limiting adjustment part have the same structure. The die-cutting device includes an upper die-cutting part and a lower die-cutting part. The upper die-cutting part is disposed above the lower die-cutting part.

[0006] Specifically, the lower die-cutting section includes a first guide post, a first control mounting plate, a support base, a first lifting control plate, a lower cutter, a lower template, a first electric push rod, and a first buffer spring. The first electric push rod is fixedly installed on the upper middle part of the support base by bolts. The first lifting control plate is fixedly connected to the upper end of the first electric push rod. The first buffer spring is fixedly installed on the upper part of the four corners of the first lifting control plate, and the first control mounting plate is fixedly connected to the upper end of the first buffer spring. The lower template is fixedly installed on the upper end of the first control mounting plate by bolts. The lower cutter is distributed on the lower template. The first guide post is symmetrically fixedly connected to the bottom end of the first control mounting plate, and the first guide post is slidably engaged with the first lifting control plate. The limiting posts are symmetrically fixedly installed on both sides of the support base, and the limiting posts are distributed on both sides of the first lifting control plate.

[0007] Specifically, a support swing arm is rotatably mounted on both ends of the support base. An angle sensor is provided on one side of each end of the support base, and a motor is provided on the other side of each end of the support base. The drive end of the motor passes through the support base and is fixedly connected to the end of the support swing arm that is rotatably inserted into the support base. The other end of the support base is connected to the angle sensor. A first conveying limit roller and a second conveying limit roller are rotatably mounted inside the upper end of the support swing arm.

[0008] Specifically, the upper die-cutting section includes a fixed mounting plate, a second electric push rod, a second lifting control plate, a second buffer spring, a second control mounting plate, an upper template, an upper cutter, and a second guide post. The second electric push rod is fixedly installed at the bottom center of the fixed mounting plate. The second lifting control plate is fixedly connected to the bottom end of the second electric push rod. The second guide post is symmetrically fixedly connected to both sides of the second lifting control plate. The second buffer spring is symmetrically fixedly installed at both ends of the second lifting control plate. The second control mounting plate is fixedly connected to the bottom end of the second buffer spring. The upper template is fixedly connected to the bottom end of the second control mounting plate by bolts. The upper cutter is distributed at the bottom of the upper template.

[0009] Specifically, the side adjustment unit includes a third electric push rod, a first mounting frame, a fourth electric push rod, a first lifting mounting plate, and a push adjustment plate. The third electric push rod is symmetrically and fixedly installed on the upper end of the first mounting frame. The first lifting mounting plate is slidably engaged with the first mounting frame, and the bottom end of the third electric push rod is fixedly connected to the upper end of the first lifting mounting plate. The fourth electric push rod is symmetrically and fixedly installed on the first lifting mounting plate. The push adjustment plate is fixedly connected to the front end of the fourth electric push rod and is located on the outside of the first lifting mounting plate.

[0010] Specifically, the second limit adjustment part includes a fixed support frame, a limit frame, a rotating wheel, a fifth electric push rod, a second mounting frame, a sixth electric push rod, and a second lifting mounting plate. The sixth electric push rod is symmetrically fixedly installed on the upper parts of both ends of the second mounting frame. The second lifting mounting plate is slidably engaged with the second mounting frame. The bottom end of the sixth electric push rod is fixedly connected to the upper end of the second lifting mounting plate. The fifth electric push rod is fixedly installed on the second lifting mounting plate. The limit frame is fixedly connected to the front end of the fifth electric push rod and is located inside the second lifting mounting plate. The rotating wheel is evenly rotated and installed inside the upper and lower ends of the limit frame. The fixed support frame is fixedly connected to the bottom outer side of the second mounting frame.

[0011] Specifically, the fixed support frame is fixedly connected to the support base, the first mounting frame is fixedly connected to the middle of the side end of the support base, and the lower template is located directly below the upper template.

[0012] Specifically, the supporting swing arm and the third die-cutting body are identical in structure except for the different specifications and positions of the lower and upper cutters. The bottom of the supporting base is symmetrically provided with mounting bases, and the fixed mounting plate is provided with fixing holes.

[0013] The beneficial effects of this invention are:

[0014] I. This invention uses the pushing adjustment plates of the two side adjustment parts to push the material laterally, and the limiting frames of the two end limiting adjustment parts and the rotating wheels to limit the material's upper and lower positions. This can force the multi-layer flexible substrate to the center of the die-cutting area, solving the problem of material conveying deviation, achieving precise fitting and positioning, and greatly improving the die-cutting alignment accuracy. The motor drives the support swing arm to swing, and the angle sensor provides real-time angle feedback adjustment. Combined with the first and second conveying limiting rollers, it can automatically maintain a constant conveying tension of the material, ensuring that the multi-layer composite flexible substrate is always taut and adhered to the lower template, without looseness, wrinkles, or misalignment between layers, ensuring neat die-cutting edges. The upper and lower cutting blades work together to achieve layered die-cutting of a specified depth and number of layers in a single operation on multi-layer 3C semi-finished products, eliminating the need for multiple step-by-step die-cutting. Complex cutting requirements can be completed in a single process, significantly shortening the processing flow and improving production efficiency.

[0015] II. The first, second, and third die-cutting bodies can work synchronously or independently, and the upper and lower cutting blades, upper and lower templates within each body can be quickly disassembled and replaced. One set of equipment can meet the processing needs of products with various sizes and die-cutting depths without the need for frequent machine replacements. The first and second guide pillars ensure precise alignment of the upper and lower die-cutting sections. The first and second buffer springs buffer the impact of die-cutting, and the limit pins limit the maximum lifting stroke to avoid hard extrusion causing indentations and damage to flexible substrates. It is suitable for processing lightweight and fragile materials for 3C products. All adjustment parts are automatically controlled by electric push rods, with closed-loop adjustment using angle sensors, eliminating the need for repeated manual calibration. The material centering tension and die-cutting position can be automatically adjusted, reducing the intensity of manual operation and making it suitable for continuous batch production. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a three-dimensional structural diagram of the main body of the present invention;

[0018] Figure 2 This is a schematic diagram of the second die-cutting main body structure in this invention;

[0019] Figure 3 This is a schematic diagram of the die-cutting device in this invention;

[0020] Figure 4 This is a side-view perspective view of the die-cutting device in this invention.

[0021] Figure 5 This is a schematic diagram of the lower die cutting section structure in this invention;

[0022] Figure 6 This is a schematic diagram of the internal structure of the lower die-cutting section in this invention;

[0023] Figure 7 This is a schematic diagram of the upper die-cutting section structure in this invention;

[0024] Figure 8 This is a schematic diagram of the side adjustment part structure in the present invention;

[0025] Figure 9 This is a schematic diagram of the second limit adjustment part in the present invention.

[0026] In the diagram: 1-First die-cutting body, 2-Second die-cutting body, 3-Third die-cutting body, 4-First limit adjustment part, 5-Side adjustment part, 6-Second limit adjustment part, 7-Die-cutting device, 8-Upper die-cutting part, 9-Lower die-cutting part, 10-First conveying limit roller, 11-Second conveying limit roller, 12-Support swing arm, 13-Angle sensor, 14-First guide column, 15-First control mounting plate, 16-Support base, 17-First lifting control plate, 18-Limiting pin, 19-Motor, 20-Lower cutter, 21-Lower template, 22-First electric push rod, 2 3-First buffer spring, 24-Fixed mounting plate, 25-Second electric push rod, 26-Second lifting control plate, 27-Second buffer spring, 28-Second control mounting plate, 29-Upper template, 30-Upper cutter, 31-Second guide column, 32-Third electric push rod, 33-First mounting frame, 34-Fourth electric push rod, 35-First lifting mounting plate, 36-Push adjustment plate, 37-Fixed support frame, 38-Limit frame, 39-Rotating wheel, 40-Fifth electric push rod, 41-Second mounting frame, 42-Sixth electric push rod, 43-Second lifting mounting plate. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] The invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1-7As shown, a 3C semi-finished product die-cutting device with precise fitting and positioning function according to the present invention includes a first die-cutting body 1, a second die-cutting body 2, and a third die-cutting body 3. The first die-cutting body 1 and the third die-cutting body 3 are distributed on the outer sides of both ends of the second die-cutting body 2. The second die-cutting body 2 includes a first limiting adjustment part 4, a side adjustment part 5, a second limiting adjustment part 6, and a die-cutting device 7. The side adjustment part 5 is disposed on both sides of the die-cutting device 7. The first limiting adjustment part 4 and the second limiting adjustment part 6 are symmetrically distributed at both ends of the die-cutting device 7, and the first limiting adjustment part 4 and the second limiting adjustment part 6 have the same structure. The die-cutting device 7 includes an upper die-cutting part 8 and a lower die-cutting part 9. The upper die-cutting part 8 is disposed above the lower die-cutting part 9, and the lower die-cutting part 9 is disposed above the lower die-cutting part 9. 9 includes a first guide post 14, a first control mounting plate 15, a support base 16, a first lifting control plate 17, a lower cutter 20, a lower template 21, a first electric push rod 22, and a first buffer spring 23. The first electric push rod 22 is fixedly installed on the upper middle part of the support base 16 by bolts. The first lifting control plate 17 is fixedly connected to the upper end of the first electric push rod 22. The first buffer spring 23 is fixedly installed on the upper part of the four corners of the first lifting control plate 17, and the first control mounting plate 15 is fixedly connected to the upper end of the first buffer spring 23. The lower template 21 is fixedly installed on the upper end of the first control mounting plate 15 by bolts. The lower cutter 20 is distributed on the lower template 21. The first guide post 14 is symmetrically fixedly connected to the first control plate 17. The bottom end of the mounting plate 15 is fixed, and the first guide post 14 is slidably engaged with the first lifting control plate 17. The limiting posts 18 are symmetrically fixed on both sides of the support base 16, and the limiting posts 18 are distributed on both sides of the first lifting control plate 17. The upper die-cutting part 8 includes a fixed mounting plate 24, a second electric push rod 25, a second lifting control plate 26, a second buffer spring 27, a second control mounting plate 28, an upper template 29, an upper cutter 30, and a second guide post 31. The second electric push rod 25 is fixedly installed in the middle of the bottom end of the fixed mounting plate 24. The second lifting control plate 26 is fixedly connected to the bottom end of the second electric push rod 25. The second guide post 31 is symmetrically fixed on both sides of the second lifting control plate 26. The second buffer spring 27 is fixed to the bottom end of the second electric push rod 25. The upper template 29 is fixedly installed at both ends of the second lifting control plate 26. The second control mounting plate 28 is fixedly connected to the bottom end of the second buffer spring 27. The upper template 29 is fixedly connected to the bottom end of the second control mounting plate 28 by bolts. The upper cutter 30 is distributed at the bottom of the upper template 29. The first die-cutting body 1, the second die-cutting body 2, and the third die-cutting body 3 can complete the die-cutting of different specifications simultaneously or in stages according to the processing requirements. The die-cut material continues to be conveyed out, and the die-cutting waste is collected with the unloading, realizing continuous, high-efficiency, and precise die-cutting processing. Furthermore, the lower cutter 20 and lower template 21, as well as the upper template 29 and upper cutter 30 in the first die-cutting body 1, the second die-cutting body 2, and the third die-cutting body 3 can be disassembled and replaced for use.

[0030] Support arms 12 are rotatably mounted on both ends of the support base 16. Angle sensors 13 are provided on one side of both ends of the support base 16, and motors 19 are provided on the other side of both ends of the support base 16. The drive end of the motor 19 passes through the support base 16 and is fixedly connected to the end of the support arm 12 that is rotatably inserted into the support base 16. The other end of the support base 16 is connected to the angle sensor 13. A first conveying limit roller 10 and a second conveying limit roller 11 are rotatably mounted inside the upper end of the support arm 12. The material to be die-cut can be tensioned and stably conveyed by the first conveying limit roller 10 and the second conveying limit roller 11. The position of the first conveying limit roller 10 and the second conveying limit roller 11 can be controlled and adjusted by the motor 19, so that the material conveyed between the upper die-cutting part 8 and the lower die-cutting part 9 is tensioned and moves above the lower template 21 in the lower die-cutting part 9.

[0031] like Figure 8 As shown, the side adjustment part 5 includes a third electric push rod 32, a first mounting frame 33, a fourth electric push rod 34, a first lifting mounting plate 35, and a push adjustment plate 36. The third electric push rod 32 is symmetrically and fixedly installed on the upper end of the first mounting frame 33. The first lifting mounting plate 35 is slidably engaged with the first mounting frame 33, and the bottom end of the third electric push rod 32 is fixedly connected to the upper end of the first lifting mounting plate 35. The fourth electric push rod 34 is symmetrically and fixedly installed on the first lifting mounting plate 35. The push adjustment plate 36 is fixedly connected to the front end of the fourth electric push rod 34, and the push adjustment plate 36 is located outside the first lifting mounting plate 35. When the upper die-cutting part 8 and the lower die-cutting part 9 are in the position... When the material is in the separated state and the material is stopped being conveyed between the upper die-cutting section 8 and the lower die-cutting section 9, the fourth electric push rod 34 in the symmetrically arranged side adjustment section 5 is activated, causing the adjustment plate 36 to extend towards the space between the upper die-cutting section 8 and the lower die-cutting section 9. This allows the material to be fully conveyed through the middle between the upper die-cutting section 8 and the lower die-cutting section 9. The third electric push rod 32 and the fourth electric push rod 34 can indirectly control the intermittent lateral movement of the adjustment plate 36, repeatedly adjusting the compression limit on both sides of the material strip conveyed between the upper die-cutting section 8 and the lower die-cutting section 9. This allows the material strip to be accurately conveyed and temporarily die-cut between the middle of the upper die-cutting section 8 and the lower die-cutting section 9.

[0032] like Figure 9As shown, the second limit adjustment unit 6 includes a fixed support frame 37, a limit frame 38, a rotating wheel 39, a fifth electric push rod 40, a second mounting frame 41, a sixth electric push rod 42, and a second lifting mounting plate 43. The sixth electric push rod 42 is symmetrically fixedly installed on the upper parts of both ends of the second mounting frame 41. The second lifting mounting plate 43 is slidably engaged with the second mounting frame 41. The bottom end of the sixth electric push rod 42 is fixedly connected to the upper end of the second lifting mounting plate 43. The fifth electric push rod 40 is fixedly installed on the second lifting mounting plate 43. The limit frame 38 is fixedly connected to the front end of the fifth electric push rod 40 and is located inside the second lifting mounting plate 43. The rotating wheel 39 is evenly rotated and installed inside the upper and lower ends of the limit frame 38. The fixed support frame 37 is fixedly connected to the bottom outer side of the second mounting frame 41. The position of the limit frame 38 can be indirectly adjusted through the fifth electric push rod 42 and the fifth electric push rod 40, so that the conveying belt can be accurately conveyed.

[0033] The fixed support frame 37 is fixedly connected to the support base 16, the first mounting frame 33 is fixedly connected to the middle of the side end of the support base 16, and the lower template 21 is located directly below the upper template 29, which can achieve precise die-cutting.

[0034] Except for the different specifications and positions of the lower cutter 20 and the upper cutter 30, the supporting swing arm 12 and the third die-cutting body 3 have the same structure. The bottom of the supporting base 16 is symmetrically provided with mounting bases, and the fixed mounting plate 24 is provided with fixing holes for easy fixed installation.

[0035] Working principle: During use, the multi-layer composite 3C semi-finished flexible substrate is sequentially passed through the first die-cutting body 1, the second die-cutting body 2, and the third die-cutting body 3 to complete continuous feeding. The second lifting mounting plate 43 is raised and lowered by the sixth electric push rod 42 in the second limit adjustment part 6 and the first limit adjustment part 4, and the fifth electric push rod 40 drives the limit frame 38 to extend and retract, causing the rotating wheels 39 arranged vertically within the limit frame 38 to abut against the upper and lower end faces of the material, thus limiting and constraining the material in the vertical direction. Simultaneously, the side adjustment parts 5 on both sides drive the second lifting mounting plate 43 through the third electric push rod 32. A lifting mounting plate 35 is adjusted for height, and a fourth electric push rod 34 drives the adjusting plate 36 to extend and retract laterally, pushing the conveyed material towards the center, so that the material is accurately centered and conveyed to the die-cutting area between the upper die-cutting section 8 and the lower die-cutting section 9, achieving precise fitting and positioning. During the conveying process, the motor 19 drives the support swing arm 12 to rotate, and the angle sensor 13 detects the swing angle of the support swing arm 12 in real time and provides feedback for adjustment. In conjunction with the first conveying limit roller 10 and the second conveying limit roller 11 on the support swing arm 12, the conveying tension of the material is automatically adjusted to keep the multi-layer flexible substrate taut. In the fitted state, to avoid wrinkles and misalignment, after positioning, the second electric push rod 25 in the upper die-cutting section 8 drives the second lifting control plate 26, the upper template 29, and the upper cutter 30 to move downwards, while the first electric push rod 22 in the lower die-cutting section 9 drives the first lifting control plate 17, the lower template 21, and the lower cutter 20 to move upwards. The first guide post 14 and the second guide post 31 act as guides and limits, ensuring accurate alignment of the upper and lower cutters. The first buffer spring 23 and the second buffer spring 27 buffer the die-cutting pressure, and the limit pin 18 limits the lifting stroke to prevent damage to the substrate. Different specifications are arranged... The upper cutter 30 and lower cutter 20 of the fabric can complete the multi-layer die-cutting of the material with a specified depth and number of layers in one go. The first die-cutting body 1, the second die-cutting body 2 and the third die-cutting body 3 can complete the die-cutting of different specifications simultaneously or in stages according to the processing requirements. The die-cut material continues to be conveyed out, and the die-cutting waste is collected with the unloading, realizing continuous, high-efficiency and precise die-cutting processing. Furthermore, the lower cutter 20 and lower template 21, as well as the upper template 29 and upper cutter 30 in the first die-cutting body 1, the second die-cutting body 2 and the third die-cutting body 3 can be disassembled and replaced for use.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 3C semi-finished product die-cutting device with precise fitting and positioning function, comprising a first die-cutting body (1), a second die-cutting body (2), and a third die-cutting body (3), characterized in that: The first die-cutting body (1) and the third die-cutting body (3) are distributed on the outer sides of both ends of the second die-cutting body (2). The second die-cutting body (2) includes a first limiting adjustment part (4), a side adjustment part (5), a second limiting adjustment part (6), and a die-cutting device (7). The side adjustment part (5) is disposed on both sides of the die-cutting device (7). The first limiting adjustment part (4) and the second limiting adjustment part (6) are symmetrically distributed at both ends of the die-cutting device (7), and the first limiting adjustment part (4) and the second limiting adjustment part (6) have the same structure. The die-cutting device (7) includes an upper die-cutting part (8) and a lower die-cutting part (9). The upper die-cutting part (8) is disposed above the lower die-cutting part (9).

2. The 3C semi-finished product die-cutting device with precise fitting and positioning function according to claim 1, characterized in that: The lower die-cutting section (9) includes a first guide post (14), a first control mounting plate (15), a support base (16), a first lifting control plate (17), a limit pin (18), a lower cutter (20), a lower template (21), a first electric push rod (22), and a first buffer spring (23). The first electric push rod (22) is fixedly mounted on the upper middle part of the support base (16) by bolts. The first lifting control plate (17) is fixedly connected to the upper end of the first electric push rod (22). The first buffer spring (23) is fixedly mounted on the upper part of the four corners of the first lifting control plate (17). The mounting plate (15) is fixedly connected to the upper end of the first buffer spring (23). The lower template (21) is fixedly installed on the upper end of the first control mounting plate (15) by bolts. The lower cutter (20) is distributed on the lower template (21). The first guide post (14) is symmetrically fixedly connected to the bottom end of the first control mounting plate (15), and the first guide post (14) is slidably engaged on the first lifting control plate (17). The limiting posts (18) are symmetrically fixedly installed on both sides of the support base (16), and the limiting posts (18) are distributed on both sides of the first lifting control plate (17).

3. The 3C semi-finished product die-cutting device with precise fitting and positioning function according to claim 2, characterized in that: Both ends of the support base (16) are rotatably mounted with support swing arms (12). An angle sensor (13) is provided on one side of both ends of the support base (16). A motor (19) is provided on the other side of both ends of the support base (16). The driving end of the motor (19) passes through the support base (16) and is fixedly connected to the end of the support swing arm (12) which is rotatably inserted into the support base (16). The other end of the support base (16) is connected to the angle sensor (13). The upper end of the support swing arm (12) is rotatably mounted with a first conveying limit roller (10) and a second conveying limit roller (11).

4. The 3C semi-finished product die-cutting device with precise fitting and positioning function according to claim 3, characterized in that: The upper die-cutting part (8) includes a fixed mounting plate (24), a second electric push rod (25), a second lifting control plate (26), a second buffer spring (27), a second control mounting plate (28), an upper template (29), an upper cutter (30), and a second guide post (31). The second electric push rod (25) is fixedly installed at the bottom center of the fixed mounting plate (24). The second lifting control plate (26) is fixedly connected to the bottom of the second electric push rod (25). The second guide post (31) is symmetrically fixedly connected to both sides of the second lifting control plate (26). The second buffer spring (27) is symmetrically fixedly installed at both ends of the second lifting control plate (26). The second control mounting plate (28) is fixedly connected to the bottom of the second buffer spring (27). The upper template (29) is fixedly connected to the bottom of the second control mounting plate (28) by bolts. The upper cutter (30) is distributed at the bottom of the upper template (29).

5. A 3C semi-finished product die-cutting device with precise fitting and positioning function according to claim 4, characterized in that: The side adjustment part (5) includes a third electric push rod (32), a first mounting frame (33), a fourth electric push rod (34), a first lifting mounting plate (35), and a push adjustment plate (36). The third electric push rod (32) is symmetrically fixedly installed on the upper end of the first mounting frame (33). The first lifting mounting plate (35) is slidably engaged on the first mounting frame (33), and the bottom end of the third electric push rod (32) is fixedly connected to the upper end of the first lifting mounting plate (35). The fourth electric push rod (34) is symmetrically fixedly installed on the first lifting mounting plate (35). The push adjustment plate (36) is fixedly connected to the front end of the fourth electric push rod (34), and the push adjustment plate (36) is located on the outside of the first lifting mounting plate (35).

6. A 3C semi-finished product die-cutting device with precise fitting and positioning function according to claim 5, characterized in that: The second limit adjustment part (6) includes a fixed support frame (37), a limit frame (38), a rotating wheel (39), a fifth electric push rod (40), a second mounting frame (41), a sixth electric push rod (42), and a second lifting mounting plate (43). The sixth electric push rod (42) is symmetrically fixedly installed on the upper part of both ends of the second mounting frame (41). The second lifting mounting plate (43) is slidably engaged with the second mounting frame (41). The bottom end of the sixth electric push rod (42) is connected to the second lifting mounting plate (43). The upper end of the mounting plate (43) is fixedly connected, the fifth electric push rod (40) is fixedly installed on the second lifting mounting plate (43), the limiting frame (38) is fixedly connected to the front end of the fifth electric push rod (40), and the limiting frame (38) is located inside the second lifting mounting plate (43). The rotating wheel (39) is evenly rotated and installed inside the upper and lower ends of the limiting frame (38). The fixed support frame (37) is fixedly connected to the bottom outer side of the second mounting frame (41).

7. A 3C semi-finished product die-cutting device with precise fitting and positioning function according to claim 6, characterized in that: The fixed support frame (37) is fixedly connected to the support base (16), the first mounting frame (33) is fixedly connected to the middle of the side end of the support base (16), and the lower template (21) is located directly below the upper template (29).

8. A 3C semi-finished product die-cutting device with precise fitting and positioning function according to claim 7, characterized in that: Except for the different specifications and positions of the lower cutter (20) and the upper cutter (30) in the support arm (12) and the third die-cutting body (3), the rest of the structure is the same. The bottom end of the support base (16) is symmetrically provided with mounting bases, and the fixed mounting plate (24) is provided with fixing holes.

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