A punching device for metal parts of fuse

Abstract

The present invention relates to the field of punching processing, and in particular to a punching device for fuse metal parts. The existing fuse punching device has a low efficiency in punching trapezoidal fuses. At the same time, when the existing fuse punching device punches a plurality of holes in the trapezoidal fuse, the guidance of a plurality of punching columns is not comprehensive enough, so that the punching of the trapezoidal fuse is not stable enough and the quality is poor. A punching device for fuse metal parts includes a main frame, etc.; a placement seat is fixedly connected to the middle of the main frame, and two hydraulic cylinders are fixedly connected to the upper part of the main frame, and the two hydraulic cylinders are symmetrically arranged. Through a plurality of punching columns, the two sides of the pressed trapezoidal fuse are punched, and at the same time, through a plurality of lower punching holes of the lower pressing plate and a plurality of upper punching holes of the upper pressing plate, the plurality of punching columns are doubly guided, so that the plurality of punching columns can be punched more stably.

Description

Technical Field

[0001] The invention relates to the field of punching processing, in particular to a punching device for fuse metal parts. Background Art

[0002] A fuse, also known as a fusible link or fuse, is an important protective electrical appliance widely used in high and low voltage power distribution systems and control systems. The fuse link, also known as a fusible element or fuse, is the core component of the fuse. Its main function is to automatically disconnect the circuit by melting itself when the circuit is overloaded or short-circuited, thereby protecting the line or electrical equipment from damage.

[0003] At present, in order to make the trapezoidal fuse easier to install, it is generally necessary to punch holes in the trapezoidal fuse so that the holes can provide convenient fixing points or connection holes when the trapezoidal fuse needs to be fixed or connected. However, the existing fuse punching devices usually process the trapezoidal fuse in sections, and rarely press and punch the trapezoidal fuse in one piece, which makes the punching efficiency of the trapezoidal fuse low. At the same time, when the existing fuse punching device punches several holes in the trapezoidal fuse, the guidance of several punching columns is not comprehensive, which makes the punching of the trapezoidal fuse not stable enough and the quality is poor. Summary of the invention

[0004] In order to overcome the disadvantages that the existing fuse punching device has low punching efficiency for trapezoidal fuses and that the existing fuse punching device does not fully guide a plurality of punching columns when punching a plurality of holes in the trapezoidal fuse, resulting in poor punching quality of the trapezoidal fuse, the present invention provides a fuse metal parts punching device that can perform pressing and punching of the trapezoidal fuse in one piece, thereby improving the punching efficiency and can also perform dual guidance on a plurality of punching columns, thereby making the punching of the plurality of punching columns more stable.

[0005] The technical solution is as follows: A punching device for fuse metal parts includes a main frame, a placement seat is fixedly connected to the middle of the main frame, two hydraulic cylinders are fixedly connected to the upper part of the main frame, the two hydraulic cylinders are symmetrically arranged, a downward pressing mechanism is provided between the two hydraulic cylinders, the downward pressing mechanism is used to extrude the upper surface of the strip-shaped fuse, a rising mechanism is provided on the placement seat, the rising mechanism is used to extrude the bottom of the strip-shaped fuse, two support plates are provided on the downward pressing mechanism, connecting pipes are fixedly connected to the two support plates, one side of the two connecting pipes is fixedly connected to an air blowing seat, and the air blowing seat is connected to the connecting pipe.

[0006] The cam is provided with a plurality of support plates at the bottom, and a plurality of support plates are provided at the bottom, a plurality of support plates are provided at the plurality of support plates, and a plurality of support plates are provided at the plurality of support plates.

[0007] As a preferred technical solution of the present invention, the lifting mechanism includes a hydraulic pipe, hydraulic pipes are fixedly connected on both sides of the placing seat, pressure rods are slidably connected to the upper parts of the two hydraulic pipes, a compression spring is connected between the pressure rod and the upper part of the hydraulic pipe, push rod plates are slidably connected to the lower parts of the two hydraulic pipes, a number of punching columns are fixedly connected to the upper surfaces of the two push rod plates, grooves are provided on both sides of the placing seat, upper pressing plates are slidably connected to the grooves on both sides of the placing seat, lower punching holes are provided on the two upper pressing plates, the two upper pressing plates are respectively slidably connected to the several punching columns on the two push rod plates, and an extrusion spring 2 is connected between the upper pressing plate and the push rod plate.

[0008] As a preferred technical solution of the present invention, the plurality of punching columns are located in the plurality of lower punching holes of the upper pressing plate.

[0009] As a preferred technical solution of the present invention, it also includes a limiting mechanism, which is arranged on the placement seat, and is used to limit the strip-shaped fuse. Fixed trapezoidal plates are fixedly connected on both sides of the placement seat, and rotating rods are rotatably connected to the two fixed trapezoidal plates. Fixed flip plates are fixedly connected to the two rotating rods, and torsion springs are connected between the two fixed flip plates and both sides of the fixed trapezoidal plates. Limiting plates are fixedly connected to the two fixed flip plates, and fixed cylinders are fixedly connected on both sides of the two upper pressing plates.

[0010] As a preferred technical solution of the present invention, the two limiting plates are both trapezoidal structures.

[0011] As a preferred technical solution of the present invention, it also includes a calibration mechanism, which is arranged on the main frame and is used to calibrate the strip fuse. The calibration mechanism includes a fixed wedge plate, and both sides of the two limit plates are fixedly connected with fixed wedge plates, both sides of the main frame are slidably connected with calibration plates, tension springs are connected between the two calibration plates and both sides of the main frame, and one side of the two calibration plates is fixedly connected with a fixed round rod.

[0012] Beneficial effects: 1. The strip-shaped fuse is pressed into a trapezoidal fuse by placing a seat, a lower pressing template, and an upper pressing template, and then the two sides of the pressed trapezoidal fuse are punched by a plurality of punching columns, so that the strip-shaped fuse can be pressed into a trapezoidal fuse and then punched, so that the pressing and punching are completed in one piece, and at the same time, the plurality of lower punching holes of the lower pressing template and the plurality of upper punching holes of the upper pressing template are used to double-guide the plurality of punching columns, so that the plurality of punching columns can punch more stably, thereby improving the punching quality of the trapezoidal fuse, and then the punched trapezoidal fuse waste is discharged by a plurality of punching columns, so that the subsequent punching can be better performed, thereby improving the punching efficiency.

[0013] 2. The two upper pressing plates move upward and drive the four fixed cylinders to move upward at the same time. The four fixed cylinders move upward and push the two fixed flip plates and the two limit plates to flip upward around the rotating rod. The front and rear sides of the strip fusible sheet are limited by the two limit plates, so that the two lower pressing plates and the two upper pressing plates are more stable when extruding the strip fusible sheet, thereby further improving the punching efficiency of several punching columns.

[0014] 3. The inclined surfaces of the two fixed wedge plates are used to push the two fixed round rods toward each other, and the two fixed round rods pull the two calibration plates toward each other. The two tension springs are stretched, and the two calibration plates first calibrate and then limit the strip fuse placed on the placement seat, so that the subsequent pressing of the strip fuse and the punching of the trapezoidal fuse are more stable, thereby improving the pressing efficiency of the strip fuse and the punching efficiency of the trapezoidal fuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of part of the lifting mechanism and the calibration mechanism of the present invention.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the main frame, the placement seat and the hydraulic cylinder of the present invention.

[0017] Figure 3 It is a partial three-dimensional structural schematic diagram of the pressing mechanism of the present invention.

[0018] Figure 4 It is a schematic diagram of the partial three-dimensional structure of the pressing mechanism of the present invention.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention.

[0020] Figure 6 It is a schematic diagram of the split three-dimensional structure of the push rod plate, the punching column, the second extrusion spring and the upper pressing plate of the present invention.

[0021] Figure 7 It is a partial three-dimensional structural schematic diagram of the lower pressing template, support plate, connecting pipe and air blowing seat of the present invention.

[0022] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the oil pressure pipe, the pressure rod, the compression spring and the push rod plate of the present invention.

[0023] Marked in the figure: 1-main frame, 2-placing seat, 3-hydraulic cylinder, 41-lower pressure plate, 42-lifting frame, 43-vertical rod, 44-extrusion spring one, 45-round rod, 46-square frame, 47-buffer spring, 48-lower pressure template, 51-oil pressure pipe, 52-pressure rod, 53-compression spring, 54-push rod plate, 55-punching column, 56-extrusion spring two, 57-upper pressure template, 6-support plate, 7-connecting pipe, 8-air blowing seat, 91-fixed trapezoidal plate, 92-rotating rod, 93-fixed flip plate, 94-torsion spring, 95-limiting plate, 96-fixed cylinder, 101-fixed wedge plate, 102-calibration plate, 103-tension spring, 104-fixed round rod. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present invention are not limited.

[0025] Embodiment 1: A punching device for a fuse metal part, such as Figure 1-8 As shown, it includes a main frame, a placement seat 2 is welded in the middle of the main frame 1, and the placement seat 2 is used to place the strip-shaped fuse. Two hydraulic cylinders 3 are fixedly connected to the upper part of the main frame 1, and the two hydraulic cylinders 3 are symmetrically arranged. A downward pressing mechanism is provided between the two hydraulic cylinders 3, and the downward pressing mechanism is used to squeeze the upper surface of the strip-shaped fuse. A rising mechanism is provided on the placement seat 2, and the rising mechanism is used to squeeze the bottom of the strip-shaped fuse. Two supporting plates 6 are provided on the downward pressing mechanism, and connecting pipes 7 are fixedly connected to the two supporting plates 6. One side of the two connecting pipes 7 is fixedly connected to an air blowing seat 8, and the air blowing seat 8 is connected to the connecting pipe 7. The air blowing seat 8 is used to blow away the waste after the trapezoidal fuse is punched.

[0026] The pressing mechanism includes a pressing plate 41, the bottoms of the telescopic rods of the two hydraulic cylinders 3 are welded with pressing plates 41, a lifting frame 42 is slidably connected between the two pressing plates 41, sliding grooves are provided on both sides of the lifting frame 42, vertical rods 43 are welded on both sides of the lifting frame 42, the two vertical rods 43 are used to guide the two pressing plates 41, the vertical rods 43 are slidably connected with the pressing plates 41, and there are extrusion springs 44 between the two sides of the lifting frame 42 and the two pressing plates 41, a circular rod 45 is slidably connected to the middle of the lifting frame 42, and the lifting frame 42 is provided with a plurality of springs 44. A square frame 46 is welded to the bottom of the circular rod 45, and the square frame 46 is used to press the middle part of the strip fuse. A buffer spring 47 is connected between the square frame 46 and the middle part of the lifting frame 42. Square grooves are provided on both sides of the square frame 46. Lower pressing templates 48 are slidably connected to both sides of the square frame 46. A plurality of upper punching holes are provided on the two lower pressing templates 48. Support plates 6 are welded to the two lower pressing templates 48, and the support plates 6 are used to support the connecting pipe 7. The two lower pressing templates 48 are fixedly connected to the lifting frame 42 on one side away from the square frame 46.

[0027] The lifting mechanism includes a hydraulic tube 51, hydraulic tubes 51 are welded on both sides of the placement seat 2, pressure rods 52 are slidably connected to the upper parts of the two hydraulic tubes 51, compression springs 53 are connected between the pressure rods 52 and the upper parts of the hydraulic tubes 51, push rod plates 54 are slidably connected to the lower parts of the two hydraulic tubes 51, a number of punching columns 55 are welded on the upper surfaces of the two push rod plates 54, and the punching columns 55 are used to punch holes in the trapezoidal fuse, grooves are opened on both sides of the placement seat 2, upper pressing plates 57 are slidably connected to the grooves on both sides of the placement seat 2, lower punching holes are opened on the two upper pressing plates 57, the two upper pressing plates 57 are respectively slidably connected to the several punching columns 55 on the two push rod plates 54, and a compression spring 2 56 is connected between the upper pressing plate 57 and the push rod plate 54.

[0028] The plurality of punching columns 55 are all located in the plurality of lower punching holes of the upper pressing plate 57 .

[0029] When it is necessary to punch a strip of fusible sheet, the worker first places the strip of fusible sheet on the placement seat 2, and connects one end of the external hose to the output port of the air pump, and the other end of the hose is connected to the connecting pipe 7, and then starts the two hydraulic cylinders 3 at the same time, and the telescopic rods of the two hydraulic cylinders 3 move downward, driving the two lower pressing plates 41, two vertical rods 43, two extrusion springs 44, the lifting frame 42 and the two lower pressing templates 48 to move downward at the same time, and the lifting frame 42 moves downward, driving the square frame 46 and the buffer spring 47 to move downward at the same time, and the square frame 46 moves downward and contacts the strip of fusible sheet on the placement seat 2, and the square frame 46 no longer moves downward, and the two lower pressing plates 41 continue to push the two extrusion springs 44, the lifting frame 42 and the two lower pressing templates 48 to move downward, The spring 47 is compressed, and the square frame 46 squeezes the strip-shaped fusible sheet so that the strip-shaped fusible sheet is initially compressed. The two lower pressing sheets 41, the two vertical rods 43, the two squeezing springs 44, the lifting frame 42 and the two lower pressing templates 48 continue to move downward, and the two lower pressing templates 48 squeeze the two sides of the strip-shaped fusible sheet so that the two sides of the strip-shaped fusible sheet fit with the upper sides of the placement seat 2. When the two lower pressing sheets 41 drive the square frame 46 and the two lower pressing templates 48 to initially compress and bend the strip-shaped fusible sheet, the two lower pressing sheets 41 simultaneously push the two pressing rods 52 to move along the upper part of the oil pressure tube 51, the two compression springs 53 are compressed, the two pressing rods 52 move downward and simultaneously push the hydraulic oil in the two oil pressure tubes 51 to move, and the hydraulic oil in the two oil pressure tubes 51 simultaneously pushes The two push rod plates 54 move upward, and the two push rod plates 54 move upward to drive a plurality of punching columns 55, a plurality of extrusion springs 56 and two upper pressing plates 57 to move upward together. The two upper pressing plates 57 contact the bottoms of both sides of the strip-shaped fusion sheet, and the two upper pressing plates 57 squeeze both sides of the strip-shaped fusion sheet. The telescopic rods of the two hydraulic cylinders 3 continue to drive the two lower pressing plates 41 to move downward. Since the two lower pressing plates 48 and the two upper pressing plates 57 squeeze the fusion sheet against each other, the two lower pressing plates 48 and the lifting frame 42 no longer move downward, and the two lower pressing plates 41 descend together along the sliding grooves on both sides of the lifting frame 42. The two extrusion springs 44 are compressed, and the two lower pressing plates 41 move downward to continue to squeeze the two pressing rods 52. The two pressing rods 52 move downward to continue The hydraulic oil in the two oil pressure pipes 51 is continuously pushed to move. Since the two lower pressing plates 48 and the two upper pressing plates 57 squeeze the molten sheet against each other, the two upper pressing plates 57 no longer move upward. The two push rod plates 54 move upward to push the plurality of punching columns 55 to punch holes on one side of the trapezoidal molten sheet respectively. The two push rod plates 54 continue to push the plurality of punching columns 55. After the plurality of punching columns 55 punch holes on both sides of the trapezoidal molten sheet, the waste material is pushed to continue to move upward. The plurality of punching columns 55 and the waste material are inserted into the upper punching holes of the lower pressing plate 48. The plurality of punching columns 55 continue to move upward to drive the waste material to protrude from the upper punching holes of the lower pressing plate 48. Then the external air pump transmits the compressed air to the connecting pipe 7 to blow away the waste material punched out by the plurality of rod punching columns 55 through the air blowing seat 8.The strip-shaped fuse is pressed into a trapezoidal fuse by placing the seat 2, the lower pressing plate 48 and the upper pressing plate 57, and then the two sides of the pressed trapezoidal fuse are punched by a plurality of punching columns 55, so that the strip-shaped fuse can be pressed into a trapezoidal fuse and then punched, so that the pressing and punching are completed in one piece, and at the same time, the plurality of lower punching holes of the lower pressing plate 48 and the plurality of upper punching holes of the upper pressing plate 57 are used to double guide the plurality of punching columns 55, so that the plurality of punching columns 55 are more stable. Punching is performed in a precise manner, thereby improving the punching quality of the trapezoidal fused sheet, and then the punched trapezoidal fused sheet waste is discharged through a plurality of punching columns 55, so that subsequent punching is performed better, thereby improving the punching efficiency. When the punching of the trapezoidal fused sheet is completed, the worker controls the telescopic rods of the two hydraulic cylinders 3 to retract and turns off the external air pump, and the external air pump no longer blows air to the air blowing seat 8. The retraction of the telescopic rods of the two hydraulic cylinders 3 drives the two lower pressing sheets 41 to retract together, and the two lower pressing sheets 41 no longer squeeze the squeezing spring 1 44. The two lower pressing plates 41 no longer squeeze the pressing rods 52. Under the reset action of the two compression springs 53, the two pressing rods 52 no longer squeeze the hydraulic oil inside the two oil pressure tubes 51. The hydraulic oil inside the two oil pressure tubes 51 no longer pushes the two push rod plates 54. Under the reset action of the plurality of squeezing springs 56, the two push rod plates 54 are reset to drive the plurality of punching columns 55 to reset. The plurality of punching columns 55 are separated from the upper punching holes of the lower pressing template 48. The two lower pressing plates 41 continue to reset. 41 pulls the lifting frame 42 and the two lower pressing plates 48 to reset, and the buffer spring 47 also resets. The two pressing rods 52 also continue to reset under the action of the two compression springs 53. The hydraulic oil inside the two oil pressure pipes 51 also continues to retract and no longer pushes the two push rod plates 54. The two push rod plates 54, a number of punching columns 55 and a number of extrusion springs 56 reset and no longer push the upper pressing plate 57. The upper pressing plate 57 also resets under the action of gravity. Finally, the worker takes out the trapezoidal fuse after punching.

[0030] Embodiment 2: Based on embodiment 1, Figure 5 As shown, it also includes a limiting mechanism, which is arranged on the placement seat 2, and is used to limit the strip-shaped fuse. Fixed trapezoidal plates 91 are welded on both sides of the placement seat 2, and the two fixed trapezoidal plates 91 are rotatably connected to rotating rods 92, and fixed flip plates 93 are welded on the two rotating rods 92. Torsion springs 94 are connected between the two fixed flip plates 93 and both sides of the fixed trapezoidal plates 91, and limiting plates 95 are fixedly connected to the two fixed flip plates 93. Both of the limiting plates 95 are trapezoidal structures, and the two limiting plates 95 are used to limit the strip-shaped fuse. Fixed cylinders 96 are welded on both sides of the two upper pressing mold plates 57, and the four fixed cylinders 96 are used to squeeze the two fixed flip plates 93 to flip.

[0031] The two upper pressing plates 57 move upward and simultaneously drive the four fixed cylinders 96 to move upward. The four fixed cylinders 96 move upward and push the two fixed flip plates 93 and the two limit plates 95 to flip upward around the rotating rod 92. The front and rear sides of the strip-shaped fuse are limited by the two limit plates 95, so that the two lower pressing plates 48 and the two upper pressing plates 57 are more stable when extruding the strip-shaped fuse, thereby further improving the punching efficiency of several punching columns 55. The two upper pressing plates 57 are reset downward and drive the four fixed cylinders 96 to reset downward together. The four fixed cylinders 96 no longer squeeze the two fixed flip plates 93. The two fixed flip plates 93 are reset under the action of the torsion spring 94. The reset of the two fixed flip plates 93 drives the limit plates 95 to reset.

[0032] Embodiment 3: Based on embodiment 2, Figure 1 As shown, a calibration mechanism is also included, which is arranged on the main frame 1. The calibration mechanism is used to calibrate the strip fuse. The calibration mechanism includes a fixed wedge plate 101. Fixed wedge plates 101 are welded on both sides of the two limiting plates 95. Calibration plates 102 are slidably connected to both sides of the main frame 1. Tension springs 103 are connected between the two calibration plates 102 and both sides of the main frame 1. The two calibration plates 102 are used to calibrate and limit the strip fuse. Fixed round rods 104 are welded on one side of the two calibration plates 102.

[0033] When the two fixed flip plates 93 and the two limit plates 95 rotate upward around the rotating rod 92, one of the limit plates 95 drives the fixed wedge plates 101 on both sides to rotate together, and the two fixed wedge plates 101 squeeze the two fixed round rods 104, and push the two fixed round rods 104 to move towards each other through the inclined surfaces of the two fixed wedge plates 101. The two fixed round rods 104 also pull the two calibration plates 102 to move towards each other, and the two tension springs 103 are stretched. The two calibration plates 102 are placed on the The strip fuse on the seat 2 is first calibrated and then limited, so that the subsequent pressing of the strip fuse and the punching of the trapezoidal fuse are more stable, thereby improving the pressing efficiency of the strip fuse and the punching efficiency of the trapezoidal fuse. The two fixed flip plates 93 and the two limit plates 95 are reset under the action of the torsion spring 94. The reset of one of the limit plates 95 drives the two fixed wedge plates 101 to reset. The reset of the fixed wedge plate 101 no longer squeezes the two fixed round rods 104. Under the action of the two tension springs 103, the two calibration plates 102 are reset.

[0034] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A punching device for fuse metal parts, characterized in that: The invention comprises a main frame, wherein a placing seat (2) is fixedly connected to the middle of the main frame (1), and two hydraulic cylinders (3) are fixedly connected to the upper part of the main frame (1), and the two hydraulic cylinders (3) are symmetrically arranged, and a pressing mechanism is provided between the two hydraulic cylinders (3), and the pressing mechanism is used to squeeze the upper surface of the strip-shaped molten sheet, and a lifting mechanism is provided on the placing seat (2), and the lifting mechanism is used to squeeze the bottom of the strip-shaped molten sheet, and two supporting plates (6) are provided on the pressing mechanism, and the two supporting plates (6) are fixedly connected to connecting pipes (7), and one side of the two connecting pipes (7) is fixedly connected to an air blowing seat (8), and the air blowing seat (8) is connected to the connecting pipe (7); The pressing mechanism comprises a pressing plate (41), the bottoms of the telescopic rods of the two hydraulic cylinders (3) are fixedly connected to the pressing plates (41), a lifting frame (42) is slidably connected between the two pressing plates (41), both sides of the lifting frame (42) are provided with sliding grooves, both sides of the lifting frame (42) are fixedly connected to vertical rods (43), the vertical rods (43) are slidably connected to the pressing plate (41), both sides of the lifting frame (42) are provided with extrusion springs (44) between the two sides of the lifting frame (42) and the two pressing plates (41), a circular rod (45) is slidably connected to the middle of the lifting frame (42), and the circular rod A square frame (46) is fixedly connected to the bottom of the (45), a buffer spring (47) is connected between the square frame (46) and the middle of the lifting frame (42), square grooves are provided on both sides of the square frame (46), and lower pressing templates (48) are slidably connected to both sides of the square frame (46), a plurality of upper punching holes are provided on the two lower pressing templates (48), and a support plate (6) is fixedly connected to the two lower pressing templates (48), and the support plate (6) is used to support the connecting pipe (7), and the two lower pressing templates (48) are fixedly connected to the lifting frame (42) on the side away from the square frame (46); The lifting mechanism comprises a hydraulic tube (51), both sides of the placement seat (2) are fixedly connected with the hydraulic tube (51), the upper parts of the two hydraulic tubes (51) are slidably connected with a pressure rod (52), a compression spring (53) is connected between the pressure rod (52) and the upper part of the hydraulic tube (51), the lower parts of the two hydraulic tubes (51) are slidably connected with a push rod plate (54), the upper surfaces of the two push rod plates (54) are fixedly connected with a plurality of punching columns (55), both sides of the placement seat (2) are provided with grooves, the grooves on both sides of the placement seat (2) are slidably connected with an upper pressing plate (57), the two upper pressing plates (57) are provided with lower punching holes, the two upper pressing plates (57) are respectively slidably connected to the plurality of punching columns (55) on the two push rod plates (54), and a second compression spring (56) is connected between the upper pressing plate (57) and the push rod plate (54); The plurality of punching columns (55) are located in the plurality of lower punching holes of the upper pressing plate (57).

2. A punching device for fuse metal parts according to claim 1, characterized in that: It also includes a limiting mechanism, which is arranged on the placement seat (2) and is used to limit the strip-shaped fuse. Fixed trapezoidal plates (91) are fixedly connected to both sides of the placement seat (2). Rotating rods (92) are rotatably connected to the two fixed trapezoidal plates (91). Fixed flip plates (93) are fixedly connected to the two rotating rods (92). Torsion springs (94) are connected between the two fixed flip plates (93) and both sides of the fixed trapezoidal plates (91). Limiting plates (95) are fixedly connected to the two fixed flip plates (93). Fixed cylinders (96) are fixedly connected to both sides of the two upper pressing plates (57).

3. A punching device for fuse metal parts according to claim 2, characterized in that: The two limiting plates (95) are both trapezoidal structures.

4. A punching device for fuse metal parts according to claim 3, characterized in that: The invention also comprises a calibration mechanism, which is arranged on the main frame (1) and is used to calibrate the strip-shaped fuse. The calibration mechanism comprises a fixed wedge plate (101), both sides of the two limit plates (95) are fixedly connected to the fixed wedge plates (101), both sides of the main frame (1) are slidably connected to calibration plates (102), tension springs (103) are connected between the two calibration plates (102) and both sides of the main frame (1), and one side of the two calibration plates (102) is fixedly connected to a fixed round rod (104).

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