Punching device and sheet metal part production line

By designing a punch structure located above the cutting edge and a waste removal system in the punching device, combined with a multi-drive structure and elastic reset component, the problem of easy chipping of the cutting edge is solved, and the reliability and efficiency of sheet metal punching are improved.

CN223465398UActive Publication Date: 2025-10-24KINGPIN METAL TOOL CO LTD
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Patent Information

Application Number
CN202422819401.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-18
Publication Date
2025-10-24
Estimated Expiration
2034-11-18

AI Technical Summary

Technical Problem

In existing technologies, the cutting edge of the tool is prone to chipping during the punching process of sheet metal parts, which affects processing efficiency and quality.

Method used

A punching device is designed to transfer the reaction force of the sheet metal part on the cutting edge to the lower die base by positioning the punch above the cutting edge, thereby reducing the force on the cutting edge; waste material is discharged by setting waste discharge holes and channels in the die cavity to reduce the impact on the cutting edge; and the punching process is optimized by adopting a multi-drive structure and elastic reset component.

Benefits of technology

It effectively reduces the probability of blade chipping, improves the reliability and efficiency of the punching device, and reduces the impact of waste on the blade.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a punching device and a sheet metal part production line, in the punching device, under the driving of a driving assembly, an upper die base and a lower die base can be close to each other, so that a convex die on the upper die base can be matched with a concave die clamp sheet metal part on the lower die base, and under the driving of a driving mechanism, the convex die on the upper die base can be matched with the concave die clamp sheet metal part. The punch can be close to the cutting edge on the female die in the horizontal direction, so that the punch can be matched with the cutting edge to punch a sheet metal part; due to the fact that the punch is located on the upper side of the cutting edge, when the punch is matched with the cutting edge to punch the sheet metal part, the stress of the sheet metal part on the cutting edge can be transferred downwards to the female die and then transferred to the lower die base, and the tipping probability of the cutting edge is reduced.
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Description

TECHNICAL FIELD

[0001] The utility model relates to sheet metal part processing technical field, especially a kind of punching device and sheet metal part production line. BACKGROUND

[0002] In the process of processing sheet metal part, there is punching process to sheet metal part.

[0003] In the related art, punching device is used to punch sheet metal part, the punch of punching device is extruded to the cutting edge of tool, so that the cutting edge of tool cuts sheet metal part, thereby completing the punching of punching device to sheet metal part.

[0004] However, since the size of cutting edge of tool is small, the cutting edge of tool is easy to produce broken edge when punching sheet metal part. SUMMARY

[0005] The utility model is at least to solve one of the technical problems existing in the prior art, the utility model provides a kind of punching device, the probability of broken edge of cutting edge can be reduced in the process of punching sheet metal part of the punching device of the embodiment.The utility model also provides a kind of sheet metal part production line in the second aspect.

[0006] According to the punching device provided in the first aspect of the utility model, the upper die includes upper die seat and male die, and the male die is arranged on the upper die seat;The lower die includes lower die seat, female die and punching assembly, and the female die and the punching assembly are both arranged on the lower die seat, the female die is provided with cutting edge and is used for bearing sheet metal part, the punching assembly includes driving mechanism and punch, the punch is located on the upper side of cutting edge, the driving mechanism is connected with the punch, and is used to drive the punch to approach cutting edge along horizontal direction, so that cutting edge cuts sheet metal part on female die;Driving assembly is connected with at least one of upper die seat and lower die seat, and driving assembly is used to drive upper die seat and lower die seat to approach each other, so that male die on upper die seat can cooperate with female die on lower die seat to clamp sheet metal part.

[0007] The punching device has at least the following advantages: in the punching device of the application, under the driving of driving assembly, upper die seat and lower die seat can approach each other, so that male die on upper die seat can cooperate with female die on lower die seat to clamp sheet metal part, under the driving of driving mechanism, punch can approach cutting edge on female die in horizontal direction, so that punch can cooperate with cutting edge to punch sheet metal part;Since the punch is located on the upper side of cutting edge, when punch cooperates with cutting edge to punch sheet metal part, the stress of sheet metal part on cutting edge can be transferred downward to female die, and then to lower die seat, thereby reducing the probability of broken edge of cutting edge.

[0008] According to the punching device of the first aspect of the utility model, the lower die seat is provided with a waste discharge channel, and the waste discharge channel is communicated with the waste discharge hole.

[0009] According to the punching device of the utility model, the lower die seat is provided with a waste discharge channel, and the waste discharge channel is communicated with the waste discharge hole.

[0010] According to the punching device of the first aspect of the utility model, the lower die seat is provided with a waste discharge channel, and the waste discharge channel is communicated with the waste discharge hole.

[0011] According to the punching device of the first aspect of the utility model, the driving mechanism comprises first driving structure and second driving structure connected, the first driving structure is used for driving the punch to move along the first horizontal direction, the second driving structure is used for driving the punch to move along the second horizontal direction, and the first horizontal direction and the second horizontal direction are separated by a certain angle.

[0012] According to the punching device of the first aspect of the utility model, the first driving structure comprises a first mounting seat, the first mounting seat is slidably arranged on the lower die seat along the first horizontal direction, the second driving structure is arranged on the first mounting seat, the punch is connected with the output end of the second driving structure, and a first abutting inclined surface is arranged on the first mounting seat;The upper die still comprises a first driving part, the first driving part is arranged on the upper die seat, and in the process that the driving assembly drives the upper die seat to be close to the lower die seat, the first driving part can push the first mounting seat to be close to the cutting edge along the first horizontal direction through the first abutting inclined surface.

[0013] According to the punching device of the first aspect of the utility model, the first driving structure further comprises a first elastic reset part, the first elastic reset part is connected with the first mounting seat and the lower die seat respectively, and is used for providing the elastic reset force that makes the first mounting seat away from the cutting edge along the first horizontal direction.

[0014] According to the punching device of the first aspect of the utility model, the second driving structure comprises a second mounting seat, the second mounting seat is slidably arranged on the first mounting seat along the second horizontal direction, the punch is arranged on the second mounting seat, and a second abutting inclined surface is arranged on the second mounting seat;The upper die still comprises a second driving part, the second driving part is arranged on the upper die seat, and in the process that the driving assembly drives the upper die seat to be close to the lower die seat, the second driving part can push the second mounting seat to be close to the cutting edge along the second horizontal direction through the second abutting inclined surface.

[0015] According to the punching device of the first aspect of the utility model, the second driving structure further comprises a second elastic reset part, the second elastic reset part is connected with the second mounting seat and the first mounting seat respectively, and is used for providing the elastic reset force that makes the second mounting seat away from the cutting edge along the second horizontal direction.

[0016] According to the sheet metal part production line provided by the second aspect of the utility model, the punching device provided by the first aspect of the utility model is comprised.

[0017] Additional aspects and advantages of the utility model will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model is further illustrated below in connection with the drawings and embodiments;

[0019] Figure 1 It is the structure schematic drawing of punching device of an embodiment of the utility model;

[0020] Figure 2 It is Figure 1 It is the structure schematic drawing of the lower die of the punching device shown in the figure;

[0021] Figure 3 It is Figure 2 It is the structure schematic drawing of the recess die of the lower die shown in the figure;

[0022] Figure 4 It is Figure 2 It is the structure schematic drawing of the punching assembly of the lower die shown in the figure;

[0023] Figure 5 It is Figure 4 It is the schematic diagram of explosion of the punching assembly shown in the figure;

[0024] Figure 6 It is Figure 1 It is the structure schematic drawing of the upper die of the punching device shown in the figure;

[0025] Figure 7 It is Figure 6 It is the local enlarged view of the structure of A of the upper die shown in the figure.

[0026] Reference signs:

[0027] Punching upper die 10, upper die seat 11, male die 12, first driving part 13, first driving slope 13a, second driving part 14, second driving slope 14a, punching lower die 20.

[0028] Lower die seat 100.

[0029] Recess die 200, waste hole 210, blade 211.

[0030] Punching assembly 300, first driving structure 310, first mounting seat 311, first abutting slope 311a, first elastic reset part 312, second driving structure 320, second mounting seat 321, second abutting slope 321a, second elastic reset part 322, punch 330.

[0031] Waste slot 400. DETAILED DESCRIPTION

[0032] This part will describe the specific embodiments of the utility model in detail, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0033] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and cannot be understood as the limitation of the utility model.

[0034] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number.If it is described to the first, the second is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0035] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0036] The following refers to Figures 1 to 7 The punching device of the first aspect of the application is described in detail.

[0037] Reference Figure 1 According to the punching device of the first aspect of the utility model, it comprises a punching upper die 10, a punching lower die 20 and a driving assembly.

[0038] Reference Figure 2 , Figure 3 , Figure 4 And Figure 6The upper die cutting die 10 comprises an upper die seat 11 and a punch 12, the punch 12 is arranged on the upper die seat 11; the lower die cutting die 20 comprises a lower die seat 100, a concave die 200 and a cutting assembly 300, the concave die 200 and the cutting assembly 300 are arranged on the lower die seat 100, the concave die 200 is provided with a cutting edge 211 and is used for bearing the sheet metal part, the cutting assembly 300 comprises a driving mechanism and a punch 330, the punch 330 is located on the upper side of the cutting edge 211, the driving mechanism is connected with the punch 330 and is used for driving the punch 330 to move close to the cutting edge 211 in the horizontal direction, so that the cutting edge 211 cuts the sheet metal part on the concave die 200; the driving assembly is connected with at least one of the upper die seat 11 and the lower die seat 100, and the driving assembly is used for driving the upper die seat 11 and the lower die seat 100 to move close to each other, so that the punch 12 cooperates with the concave die 200 to clamp the sheet metal part.

[0039] In the working process of the cutting device, the sheet metal part can be placed on the concave die 200, under the driving of the driving assembly, the upper die seat 11 and the lower die seat 100 can move close to each other in the vertical direction, so that the concave die 200 and the punch 12 cooperate with each other to clamp the sheet metal part on the concave die 200, under the driving of the driving mechanism, the punch 330 can move close to the cutting edge 211 on the concave die 200 in the horizontal direction, so that the punch 330 can push the part to be cut on the sheet metal part on the concave die 200 to move close to and press the cutting edge 211, and then the cutting edge 211 can cut the part to be cut on the sheet metal part from the sheet metal part.

[0040] It can be understood that, in the cutting device, the punch 330 is located on the upper side of the cutting edge 211, so that the lower end of the cutting edge 211 can be connected with the body of the concave die 200, and the lower end of the cutting edge 211 has a large structure size, when the punch 330 cooperates with the cutting edge 211 to cut the sheet metal part, the reaction force applied by the sheet metal part to the cutting edge 211 can be downwardly transferred from the concave die 200 to the lower die seat 100, so that the stress of the cutting edge 211 itself can be reduced, and the probability of chipping of the cutting edge 211 in the cutting process of the sheet metal part can be reduced.

[0041] It should be noted that, after the punch 330 cooperates with the cutting edge 211 to cut the sheet metal part, if the waste formed by cutting is directly left near the cutting edge 211, the subsequent cutting of the cutting edge 211 on the sheet metal part will be affected.

[0042] Based on the above problems, in some embodiments of the utility model, the concave die 200 is formed with a waste discharge hole 210, the lower hole of the waste discharge hole 210 is formed along the cutting edge 211.

[0043] It can be understood that, since the exhaust hole 210 is arranged on the concave die 200, and the lower hole of the exhaust hole 210 is along the blade 211, after the punch 330 cooperates with the blade 211 to punch the metal sheet, the waste formed by punching can enter the exhaust hole 210 under the pushing of the punch 330, so as to reduce the influence of the waste on the work of the blade 211.

[0044] In order to facilitate the discharge of the waste in the exhaust hole 210, in a further embodiment of the utility model, the lower die seat 100 is provided with an exhaust channel, and the exhaust channel is communicated with the exhaust hole 210.

[0045] It can be understood that, by arranging the exhaust channel in the lower die seat 100 and communicating the exhaust channel with the exhaust hole 210, the waste pushed into the exhaust hole 210 by the punch 330 can be discharged through the exhaust channel.

[0046] In a further embodiment of the utility model, referring to Figure 2 , the lower die 20 further comprises an exhaust groove 400, and the exhaust groove 400 is communicated with one end of the exhaust channel away from the exhaust hole 210.

[0047] It can be understood that the waste punched into the exhaust hole 210 by the punch 330 can be discharged through the exhaust channel and the exhaust groove 400 in turn.

[0048] Further, the staff can communicate one end of the exhaust groove 400 away from the exhaust channel with the waste collecting groove, so that the waste produced by the punching device of the application to the metal sheet can be collected into the waste collecting groove through the exhaust hole 210, the exhaust channel and the exhaust groove 400 in turn.

[0049] In some embodiments of the utility model, referring to Figure 4 and Figure 5 , the driving mechanism comprises a first driving structure 310 and a second driving structure 320 connected in series, the first driving structure 310 is used for driving the punch 330 to move along the first horizontal direction, the second driving structure 320 is used for driving the punch 330 to move along the second horizontal direction, and the first horizontal direction and the second horizontal direction are separated by a certain angle.

[0050] It should be noted that, when the punching device of the application works, the first driving structure 310 can first drive the punch 330 to move along the first horizontal direction, so that the punch 330 is opposite to the blade 211 in the second horizontal direction, and then the second driving structure 320 can drive the punch 330 to move along the second horizontal direction to approach the punch 330, so that the punch 330 cooperates with the blade 211 to punch the metal sheet.

[0051] It can be understood that the first driving structure 310 and the second driving structure 320 are arranged so that the punch 330 can move in the first horizontal direction and the second horizontal direction, so that the punch 330 can better avoid other structures on the lower die seat 100 during movement, thereby reducing the probability of interference between the punch 330 and other structures on the lower die seat 100.

[0052] In further embodiments of the present application, with reference to Figures 4 to 6 , the first driving structure 310 includes a first mounting seat 311, which is slidably arranged on the lower die seat 100 in the first horizontal direction, and the second driving structure 320 is arranged on the first mounting seat 311, and the punch 330 is connected to the output end of the second driving structure 320, and the first mounting seat 311 is provided with a first abutting inclined surface 311a; the die cutting upper die 10 further includes a first driving member 13 arranged on the upper die seat 11, and during the process of driving the upper die seat 11 to approach the lower die seat 100 by the driving assembly, the first driving member 13 can push the first mounting seat 311 to approach the cutting edge 211 in the first horizontal direction through the first abutting inclined surface 311a.

[0053] Further, during the process of driving the upper die seat 11 to approach the lower die seat 100 in the vertical direction by the driving assembly, on the one hand, the male die 12 can approach the female die 200 in the vertical direction to complete the clamping and fixing of the sheet metal part, and on the other hand, the first driving member 13 can push the first mounting seat 311 to move in the first horizontal direction through the first abutting inclined surface 311a, so that the punch 330 approaches the cutting edge 211 in the first horizontal direction.

[0054] It can be understood that the arrangement of the first abutting inclined surface 311a enables the driving assembly to simultaneously drive the movement of the upper die seat 11 and the first mounting seat 311, thereby reducing the number of driving sources installed in the die cutting device of the present application.

[0055] In further embodiments of the present application, in order to enable the first driving member 13 to better push the first mounting seat 311 to move in the first horizontal direction through the first abutting inclined surface 311a, with reference to Figure 7 , the lower end of the first driving member 13 is provided with a first driving inclined surface 13a adapted to the first abutting inclined surface 311a.

[0056] It should be noted that under the pushing of the first driving member 13, the first mounting seat 311 can only approach the cutting edge 211 in the first horizontal direction.

[0057] In order to enable the first mounting seat 311 to move away from the cutting edge 211 in the first horizontal direction, in some embodiments of the present application, with reference to Figure 4 and Figure 5The first driving structure 310 further comprises a first elastic reset member 312 connected with the first mounting seat 311 and the lower die seat 100 respectively and used for providing an elastic reset force for moving the first mounting seat 311 away from the blade 211 along the first horizontal direction.

[0058] Further, during the process that the driving assembly drives the upper die seat 11 to move downwards to approach the lower die seat 100, the first mounting seat 311 can overcome the elastic force of the first elastic reset member 312 to drive the punch 330 to move in the first horizontal direction to approach the blade 211 under the pushing of the first driving member 13; during the process that the driving assembly drives the upper die seat 11 to move upwards to move away from the lower die seat 100, the first driving member 13 can move upwards to move away from the first mounting seat 311, at this time, the first mounting seat 311 can drive the punch 330 to move in the first horizontal direction to move away from the blade 211 under the elastic force of the first elastic reset member 312, so as to realize the reset of the punch 330 in the first horizontal direction.

[0059] In some embodiments of the present application, referring to Figures 4 to 6 The second driving structure 320 comprises a second mounting seat 321 which is slidably arranged on the first mounting seat 311 along the second horizontal direction, and the punch 330 is arranged on the second mounting seat 321, and the second mounting seat 321 is provided with a second abutting inclined surface 321a; the die cutting upper die 10 further comprises a second driving member 14 arranged on the upper die seat 11, and during the process that the driving assembly drives the upper die seat 11 to move to approach the lower die seat 100, the second driving member 14 can push the second mounting seat 321 to move in the second horizontal direction to approach the blade 211 through the second abutting inclined surface 321a.

[0060] Further, during the process that the driving assembly drives the upper die seat 11 to move in the vertical direction to approach the lower die seat 100, on one hand, the male die 12 can move in the vertical direction to approach the female die 200 to complete the clamping and fixing of the metal sheet, and on the other hand, the second driving member 14 can push the second mounting seat 321 to move in the second horizontal direction through the second abutting inclined surface 321a, so that the punch 330 moves in the second horizontal direction to approach the blade 211.

[0061] It can be understood that the arrangement of the second abutting inclined surface 321a enables the driving assembly to drive the upper die seat 11 and the second mounting seat 321 to move at the same time, and further, the number of driving sources arranged in the die cutting device of the present application is reduced.

[0062] In further embodiments of the present application, in order to enable the second driving member 14 to better push the second mounting seat 321 to move in the second horizontal direction through the second abutting inclined surface 321a, referring to Figure 7 The lower end of the second driving member 14 is provided with a second driving inclined surface 14a matched with the second abutting inclined surface 321a.

[0063] It should be noted that under the pushing of the second driving member 14, the second mounting seat 321 can only approach the blade 211 along the second horizontal direction.

[0064] In order to enable the second mounting seat 321 to move away from the blade 211 along the second horizontal direction, in some embodiments of the utility model, the second driving structure 320 further comprises a second elastic return member 322, the second elastic return member 322 is connected with the second mounting seat 321 and the first mounting seat 311 respectively, and is used to provide an elastic return force for enabling the second mounting seat 321 to move away from the blade 211 along the second horizontal direction. Figure 4 And Figure 5 , the second driving structure 320 further comprises a second elastic return member 322, the second elastic return member 322 is connected with the second mounting seat 321 and the first mounting seat 311 respectively, and is used to provide an elastic return force for enabling the second mounting seat 321 to move away from the blade 211 along the second horizontal direction.

[0065] Further, in the process that the driving assembly drives the upper die seat 11 to approach the lower die seat 100 downwards, under the pushing of the second driving member 14, the second mounting seat 321 can overcome the elastic force of the second elastic return member 322 to drive the punch 330 to approach the blade 211 along the second horizontal direction; in the process that the driving assembly drives the upper die seat 11 to move away from the lower die seat 100 upwards, the second driving member 14 can move away from the second mounting seat 321 upwards, at this time, under the elastic force of the second elastic return member 322, the second mounting seat 321 can drive the punch 330 to move away from the blade 211 along the second horizontal direction, so as to realize the reset of the punch 330 along the second horizontal direction.

[0066] In some embodiments of the utility model, the punch 12, the concave die 200 and the punching assembly 300 are correspondingly provided with multiple groups, so that the punching device of the application can punch multiple sheet metal parts at the same time.

[0067] In some embodiments of the utility model, the first elastic return member 312 and the second elastic return member 322 are both nitrogen springs.

[0068] According to the sheet metal part production line provided by the second aspect of the utility model, the punching device provided by the first aspect of the utility model is comprised.

[0069] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A die cutting apparatus characterized by, The utility model relates to a punch cutting die set, comprising: a punch upper die, comprising a punch upper die base and a punch, the punch being arranged on the punch upper die base; a punch lower die, comprising a punch lower die base, a die cavity and a punch cutting assembly, the die cavity and the punch cutting assembly being arranged on the punch lower die base, the die cavity being provided with a cutting edge and being used for bearing a sheet metal part, the punch cutting assembly comprising a driving mechanism and a punch head, the punch head being located on the upper side of the cutting edge, the driving mechanism being connected with the punch head and being used for driving the punch head to move towards the cutting edge in a horizontal direction so that the cutting edge cuts the sheet metal part on the die cavity; a driving assembly, being connected with at least one of the punch upper die base and the punch lower die base, the driving assembly being used for driving the punch upper die base and the punch lower die base to move towards each other so that the punch cooperates with the die cavity to clamp the sheet metal part.

2. A die cutting apparatus according to claim 1, wherein The die cavity is provided with a waste discharge hole, and the lower hole of the waste discharge hole is formed along the cutting edge.

3. A die cutting apparatus according to claim 2, wherein The punch lower die base is provided with a waste discharge channel, and the waste discharge channel is communicated with the waste discharge hole.

4. A die cutting apparatus according to claim 3, wherein The punch lower die further comprises a waste discharge groove, and the waste discharge groove is communicated with one end of the waste discharge channel away from the waste discharge hole.

5. The die cutting apparatus of claim 1, wherein, The driving mechanism comprises a first driving structure and a second driving structure connected with each other, the first driving structure being used for driving the punch head to move in a first horizontal direction, the second driving structure being used for driving the punch head to move in a second horizontal direction, and the first horizontal direction and the second horizontal direction being separated by a certain angle.

6. A die cutting apparatus according to claim 5, wherein The first driving structure comprises a first mounting base, the first mounting base being slidably arranged on the punch lower die base in the first horizontal direction, the second driving structure being arranged on the first mounting base, the punch head being connected with the output end of the second driving structure, and the first mounting base being provided with a first abutting inclined surface; the punch upper die further comprises a first driving member, the first driving member being arranged on the punch upper die base, and the first driving member being capable of pushing the first mounting base to move towards the cutting edge in the first horizontal direction through the first abutting inclined surface in the process of the driving assembly driving the punch upper die base to move towards the punch lower die base.

7. A die cutting apparatus according to claim 6, wherein The first driving structure further comprises a first elastic return member, the first elastic return member being connected with the first mounting base and the punch lower die base respectively and being used for providing an elastic return force for moving the first mounting base away from the cutting edge in the first horizontal direction.

8. The die cutting apparatus of claim 6, wherein, The second driving structure comprises a second mounting base, the second mounting base being slidably arranged on the first mounting base in the second horizontal direction, the punch head being arranged on the second mounting base, and the second mounting base being provided with a second abutting inclined surface; the punch upper die further comprises a second driving member, the second driving member being arranged on the punch upper die base, and the second driving member being capable of pushing the second mounting base to move towards the cutting edge in the second horizontal direction through the second abutting inclined surface in the process of the driving assembly driving the punch upper die base to move towards the punch lower die base.

9. A die cutting apparatus according to claim 8, wherein The second driving structure further comprises a second elastic return member, the second elastic return member being connected with the second mounting base and the first mounting base respectively and being used for providing an elastic return force for moving the second mounting base away from the cutting edge in the second horizontal direction.

10. A sheet metal part production line, characterized by A die cutting apparatus comprising any one of claims 1 to 9.