Punching production line for metal fittings

Abstract

The invention relates to the technical field of new energy automobile metal accessory production equipment, and particularly discloses a metal accessory stamping production line which comprises a roll discharging mechanism, a stamping mechanism, a material breaking mechanism and a rolling mechanism which are arranged in sequence. The stamping mechanism is used for conducting stamping forming operation on a metal belt, the material breaking mechanism is used for automatically breaking out formed metal accessories from metal belt rim charges, the material breaking mechanism comprises a heightening roller, and the heightening roller is higher than the stamping position of the stamping mechanism. And the metal belt passing through the stamping mechanism is in a loose state, when the stamping mechanism conducts stamping operation, the metal belt is in a tightened state, the metal belt obtained after metal accessories are broken off is wound around the winding mechanism, and a material collecting mechanism used for collecting the metal accessories is further arranged below the material breaking mechanism. The method has the effect of improving the production efficiency of the new energy automobile metal fittings.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicle metal parts production equipment, and in particular to a stamping production line for metal parts. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels and new vehicle power devices), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc.

[0003] Reference Figure 1 There is a metal accessory for new energy vehicles, including a bottom plate 9 and four side plates 10. The bottom plate 9 is arranged in a rectangular plate shape, and the four side plates 10 are arranged around the circumference of the bottom plate 9 to form a frame shape. This metal accessory is formed by a metal strip through continuous die stamping, cutting and bending. However, the formed metal accessory abuts against the edge of the metal strip, and subsequent staff also need to break the formed metal accessory off the edge of the metal strip, which reduces the production efficiency of the metal accessory. This problem needs to be solved urgently. Summary of the invention

[0004] In order to improve the production efficiency of metal accessories for new energy vehicles, the present application provides a stamping production line for metal accessories.

[0005] The present application provides a stamping production line for metal parts, which adopts the following technical solution: A stamping production line for metal accessories comprises a discharging mechanism, a stamping mechanism, a material breaking mechanism and a reeling mechanism which are arranged in sequence, wherein the discharging mechanism is used to automatically discharging and conveying the metal strip, the discharged metal strip passes through the stamping mechanism, the stamping mechanism is used to perform stamping and forming operations on the metal strip, the stamped metal strip passes through the material breaking mechanism, the material breaking mechanism is used to automatically break the formed metal accessories off the edge of the metal strip, the material breaking mechanism comprises a raising roller, the height of the raising roller is higher than the height of the stamping position of the stamping mechanism, when the stamping mechanism does not perform a stamping operation, the metal strip passing through the stamping mechanism is in a relaxed state, when the stamping mechanism performs a stamping operation, the metal strip is in a taut state, the metal strip after the metal accessories are broken out is reeled on the reeling mechanism, and a collecting mechanism for collecting the metal accessories is also arranged below the material breaking mechanism.

[0006] By adopting the above technical scheme, in the production process of metal accessories, the unwinding mechanism automatically unwinds and conveys the metal strip, and the conveyed metal strip passes through the stamping mechanism, and the stamping mechanism performs a stamping operation on the metal strip to form metal accessories. At this time, the metal accessories abut against the edge of the metal strip and continue to be conveyed. When the stamping mechanism does not perform a stamping operation, the metal strip is conveyed backward, and the metal strip is in a relaxed state. When the stamping mechanism performs a stamping operation, the stamping mechanism presses the metal strip to tighten the metal strip. The impact force of the process in which the metal strip changes from a relaxed state to a tightened state shakes the metal accessories out of the edge of the metal strip. The collecting mechanism located below the breaking mechanism collects the metal accessories, and the rewinding mechanism collects the edge of the metal strip. The degree of automation is high, and subsequent staff do not need to break the formed metal accessories off the edge of the metal strip, which simplifies the process, and the stamping process and the breaking process are carried out simultaneously, which is conducive to improving the production efficiency of metal accessories for new energy vehicles.

[0007] Preferably, the stamping mechanism includes a stamping frame, a continuous die and a stamping drive component, wherein the stamping drive component is arranged on the stamping frame and is used to drive the continuous die to perform opening and closing operations, and the metal strip passes through the continuous die, and the height of the cushion roller is higher than the height of the continuous die. When the continuous die is in an open state, the metal strip is in a relaxed state, and when the continuous die is in a closed state, the metal strip is in a taut state.

[0008] By adopting the above technical scheme, the stamping machine frame supports the continuous die and the stamping drive component, and the stamping drive component drives the continuous die to open and close the metal strip to form metal accessories. When the continuous die is in the open state, the metal strip is transported backward so that the metal strip edge material after the stamping operation is completed is transported to the rear of the stamping mechanism with the metal accessories. At this time, the metal strip is in a relaxed state. When the continuous die is in the closed state, the continuous die performs a stamping operation on the metal strip, and the metal strip stops being transported. At the same time, the closing action of the continuous die tightens the metal strip, so that the metal strip quickly changes from a relaxed state to a taut state. The impact force generated in this process shakes the metal accessories out of the metal strip edge material, thereby realizing the separation of the metal accessories.

[0009] Preferably, the material receiving mechanism includes a material receiving box and a paper placing assembly, the material receiving box is located between the stamping mechanism and the raising roller, and the material receiving box is located below the metal belt, and the paper placing assembly is arranged on one side of the material receiving box for placing spacer paper into the material receiving box.

[0010] By adopting the above technical scheme, the material receiving box collects the broken-off metal accessories. Since the metal accessories are in the shape of a three-dimensional frame, the broken-off metal accessories are placed in a disorderly manner in the material receiving box in a horizontal and vertical manner, which reduces the amount of material collected by the material receiving box. After a part of the metal accessories are collected in the material receiving box, the paper placing assembly places separator paper in the material receiving box, which is beneficial to improve the neatness of the metal accessories in the material receiving box, thereby helping to increase the amount of material collected by the material receiving box, and the separator paper helps to reduce collisions between metal accessories.

[0011] Preferably, the paper placement assembly includes a robot and a paper box, the paper box is located on one side of the material receiving box, and spacer paper is stacked in the paper box. The robot is located between the paper box and the material receiving box and is used to place the spacer paper in the paper box horizontally in the material receiving box.

[0012] By adopting the above technical solution, the robot places the separator paper in the paper box horizontally in the receiving box to achieve the isolation and tidying function.

[0013] Preferably, the material receiving box is flared.

[0014] By adopting the above technical solution, this arrangement makes it easy for the shaken-off metal accessories to fall into the material receiving box.

[0015] Preferably, the unwinding mechanism comprises an unwinding frame, an unwinding disc and a first reversing drum, the unwinding disc is horizontally rotatably connected to the unwinding frame, and the first reversing drum is located behind the unwinding direction of the unwinding disc and is vertically rotatably connected to the unwinding frame.

[0016] By adopting the above technical solution, the unwinding frame supports the unwinding disk and the first reversing drum, and the unwinding disk is horizontally rotatably connected to the unwinding frame to facilitate the horizontal placement of the metal strip coil. When the metal strip coil is placed horizontally, the metal strip is vertically arranged, and the first reversing drum reverses the conveyed metal strip, so that the metal strip is horizontally conveyed into the stamping mechanism, so that the stamping mechanism can perform stamping operations on the metal strip.

[0017] Preferably, the first reversing cylinder is provided with a limiting rod, the limiting rod is arranged along the length direction of the first reversing cylinder, both ends of the limiting rod are bent toward the direction of the first reversing cylinder, and there is a space between the first reversing cylinder and the limiting rod for the metal belt to surround.

[0018] By adopting the above technical solution, the limiting rod limits the metal belt wrapped around the first reversing cylinder, which is helpful to prevent the metal belt from detaching from the first reversing cylinder.

[0019] Preferably, it also includes a leveling mechanism for leveling the conveyed metal strip, the leveling mechanism is located between the unwinding mechanism and the stamping mechanism, the leveling mechanism includes a support platform for horizontally supporting the metal strip and a leveling block that moves horizontally back and forth on the support platform, there is a gap between the support platform and the leveling block for the metal strip to pass through, and the leveling block presses the metal strip against the support platform.

[0020] By adopting the above technical solution, the support platform horizontally supports and transports the conveyed metal strip, and the metal strip passes through the gap between the support platform and the leveling block. The leveling block reciprocates horizontally on the support platform to push the metal strip flat, thereby facilitating the subsequent stamping operation on the metal strip by the stamping mechanism.

[0021] Preferably, an oil dripping tube is provided on the support platform, and the oil dripping tube is located between the leveling block and the stamping mechanism, and the oil dripping tube is used to drip lubricating oil to the stamping position on the metal strip after the leveling operation.

[0022] By adopting the above technical solution, when the metal strip leveling operation is completed, the oil dripping pipe drips lubricating oil to the stamping position on the metal strip, which is helpful to prevent the generation of burrs during the stamping process of the metal strip.

[0023] Preferably, the winding mechanism includes a winding frame, a winding disk and a second reversing cylinder, the winding disk is horizontally rotatably connected to the winding frame, and the second reversing cylinder is located in front of the winding disk and vertically rotatably connected to the winding frame.

[0024] By adopting the above technical solution, the winding frame supports the hand winding reel and the second reversing drum, and the winding reel is horizontally rotatably connected to the winding frame to facilitate the horizontal placement of the metal strip edge material. When the metal strip edge material is horizontally wound and placed, the metal strip edge material is vertically arranged, and the second reversing drum reverses the wound metal strip edge material to facilitate the winding operation of the metal strip edge material.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting a discharging mechanism, a stamping mechanism, a material breaking mechanism and a reeling mechanism, in the production process of metal accessories, the discharging mechanism automatically discharging and conveying the metal strip, the conveyed metal strip passes through the stamping mechanism, the stamping mechanism performs a stamping operation on the metal strip to form metal accessories, at this time, the metal accessories abut against the edge of the metal strip and continue to be conveyed, when the stamping mechanism does not perform a stamping operation, the metal strip is conveyed backward, at this time, the metal strip is in a relaxed state, when the stamping mechanism performs a stamping operation, the stamping mechanism presses the metal strip to tighten the metal strip, and the impact force of the process of the metal strip changing from a relaxed state to a tightened state shakes the metal accessories out of the edge of the metal strip, the collecting mechanism located below the material breaking mechanism collects the metal accessories, and the reeling mechanism collects the edge of the metal strip, with a high degree of automation, and the subsequent staff does not need to break the formed metal accessories off the edge of the metal strip, which simplifies the process, and the stamping process and the material breaking process are carried out simultaneously, which is conducive to improving the production efficiency of metal accessories for new energy vehicles.

[0026] 2. The height of the cushion roller is higher than that of the continuous die. When the continuous die is in the open state, the metal belt is transported backwards so that the metal belt edge material after the stamping operation is completed is transported to the rear of the stamping mechanism with the metal accessories. At this time, the metal belt is in a relaxed state. When the continuous die is in the closed state, the continuous die performs a stamping operation on the metal belt. At this time, the metal belt stops being transported. At the same time, the closing action of the continuous die tightens the metal belt, so that the metal belt quickly changes from a relaxed state to a taut state. The impact force generated in this process shakes the metal accessories out of the metal belt edge material, thereby realizing the separation of the metal accessories.

[0027] 3. By setting up a material receiving box and a paper placing component, the material receiving box collects the separated metal accessories. Since the metal accessories are in the shape of a three-dimensional frame, the separated metal accessories are placed in a disorderly manner in the material receiving box in a horizontal and vertical manner, which reduces the amount of material collected by the material receiving box. After a part of the metal accessories are collected in the material receiving box, the paper placing component is used to place separator paper in the material receiving box, which is beneficial to improve the neatness of the metal accessories in the material receiving box, thereby helping to increase the amount of material collected by the material receiving box, and the separator paper helps to reduce collisions between metal accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a metal accessory in the background technology.

[0029] Figure 2 It is a schematic diagram of the overall structure of the stamping production line in the embodiment of the present application.

[0030] Figure 3 It is a schematic diagram of the unwinding mechanism in the embodiment of the present application.

[0031] Figure 4 It is a structural schematic diagram of the stamping mechanism in the embodiment of the present application.

[0032] Figure 5 It is a schematic diagram of the winding mechanism of the embodiment of the present application.

[0033] Description of reference numerals: 1. Unwinding mechanism; 11. Unwinding rack; 12. Unwinding reel; 13. First reversing cylinder; 2. Punching mechanism; 21. Punching frame; 22. Continuous die; 23. Punching drive; 3. Heightening roller; 4. Rewinding mechanism; 41. Rewinding rack; 42. Rewinding reel; 43. Second reversing cylinder; 5. Rewinding mechanism; 51. Rewinding box; 52. Paper placing assembly; 521. Robot; 522. Paper box; 6. Limit rod; 7. Leveling mechanism; 71. Support platform; 72. Leveling block; 8. Oil dripping pipe; 9. Bottom plate; 10. Side plate. DETAILED DESCRIPTION

[0034] The following is combined with Figure 2-5 This application is described in further detail.

[0035] The present application embodiment discloses a stamping production line for metal parts, referring to Figure 2 , including a discharging mechanism 1, a leveling mechanism 7, a punching mechanism 2, a material breaking mechanism and a reeling mechanism 4 which are arranged in sequence. The discharging mechanism 1 is used to automatically discharging and conveying the metal strip. The conveyed metal strip passes through the leveling mechanism 7, the punching mechanism 2 and the material breaking mechanism in sequence and is finally reeled in the reeling mechanism 4. During the conveying process of the metal strip, the leveling mechanism 7 performs a leveling operation on the metal strip, and the punching mechanism 2 performs a punching and forming operation on the metal strip. At this time, the formed metal accessories are connected to the edge of the metal strip and continue to be conveyed backwards. The material breaking mechanism is used to automatically break the formed metal accessories off the edge of the metal strip. It should be noted that when the stamping mechanism 2 is not performing a stamping operation, the metal belt is conveying, and the metal belt passing through the stamping mechanism 2 is in a relaxed state. When the stamping mechanism 2 is performing a stamping operation, the metal belt stops conveying, and the metal belt is in a taut state. The process of the metal belt rapidly changing from a slack state to a taut state shakes out the metal accessories from the metal belt edge material, and the metal belt edge material after the metal accessories are broken out is rolled up on the winding mechanism 4. At the same time, a collecting mechanism 5 for collecting metal accessories is also provided below the breaking mechanism. The entire production process of metal accessories has a high degree of automation, does not require manual operation, and simplifies the process. The stamping process and the breaking process are carried out simultaneously, which is conducive to improving the production efficiency of metal accessories for new energy vehicles.

[0036] Reference Figure 2 and Figure 3The unwinding mechanism 1 includes an unwinding frame 11, an unwinding disc 12 and a first reversing drum 13. The unwinding disc 12 is horizontally connected to the unwinding frame 11. The first reversing drum 13 is located behind the unwinding direction of the unwinding disc 12 and is vertically connected to the unwinding frame 11. The rotation of the unwinding disc 12 discharges the metal strip, and the delivered metal strip surrounds the first reversing drum 13, so that the vertical metal strip is transformed into a horizontal conveying, so as to facilitate the subsequent stamping and forming operation of the metal strip by the stamping mechanism 2. It should be noted that a limit rod 6 is fixedly arranged on the first reversing drum 13, and the middle part of the limit rod 6 is arranged along the length direction of the first reversing drum 13. Both ends of the limit rod 6 are bent toward the direction of the first reversing drum 13, so that the limit rod 6 is in an inverted U shape. There is a space for the metal strip to surround between the first reversing drum 13 and the limit rod 6, so as to prevent the unwinding metal strip from escaping from the first reversing drum 13, thereby facilitating the stability of the metal strip conveying.

[0037] Reference Figure 2 and Figure 4 The leveling mechanism 7 is located between the unwinding frame 11 and the stamping mechanism 2 and is used to level the metal strip that is conveyed out. Specifically, the leveling mechanism 7 includes a support platform 71 for horizontally supporting the metal strip and a leveling block 72 that reciprocates horizontally on the support platform 71. There is a gap between the support platform 71 and the leveling block 72 for the metal strip to pass through, and the leveling block 72 presses the metal strip against the support platform 71. During the conveying process of the metal strip on the support platform 71, the lower surface of the metal strip abuts against the table of the support platform 71, and the upper surface of the metal strip abuts against the lower surface of the leveling block 72. As the leveling block 72 reciprocates horizontally, the leveling block 72 pushes the unwinding metal strip to be flat, so that the subsequent stamping mechanism 2 can perform stamping operations on the metal strip, and it is beneficial to improve the forming quality of metal accessories. The leveling block 72 can be driven by a cylinder or a motor screw structure, which is not limited here.

[0038] Reference Figure 4 An oil dripping tube 8 is also provided on the support platform 71. The oil dripping tube 8 is located between the leveling block 72 and the stamping mechanism 2. The oil dripping tube 8 is used to drip lubricating oil to the stamping position on the metal strip after the leveling operation to prevent the generation of burrs in subsequent stamping operations.

[0039] Reference Figure 2 and Figure 4The metal strip after dripping oil enters the stamping mechanism 2 for stamping and forming operations. Specifically, the stamping mechanism 2 includes a stamping frame 21, a continuous die 22 and a stamping drive 23. The stamping drive 23 is arranged on the stamping frame 21 to drive the continuous die 22 to open and close the die. In this embodiment, the stamping drive 23 is selected as an oil cylinder. The metal strip passes through the continuous die 22. The continuous die 22 is also called a progressive die or a step-by-step die. During the stamping process, a strip-shaped stamping raw material is used. A cold stamping die that completes multiple stamping processes simultaneously on a die with several different workstations is used. It will not be described in detail here.

[0040] Reference Figure 2 and Figure 4 The material breaking mechanism includes a heightening roller 3, the height of which is higher than the height of the punching position of the punching mechanism 2. The metal strip after the punching operation is wound around the heightening roller 3. In this embodiment, the height of the heightening roller 3 is higher than the height of the continuous die 22. When the continuous die 22 is in the open state, the metal strip is in a relaxed state. When the continuous die 22 is in the closed state, the continuous die 22 presses the metal strip so that the metal strip is in a taut state. In the process of the metal strip changing from a relaxed state to a taut state, the impact force generated by the change in the shape of the metal strip shakes the metal accessories out of the metal strip edge material, thereby realizing the separation of the metal accessories from the metal strip edge material.

[0041] Reference Figure 2 When the metal parts are shaken out from the metal strip edge material, the collecting mechanism 5 collects the metal parts and then refers to Figure 4 The receiving mechanism 5 includes a receiving box 51 and a paper placing assembly 52. ​​The receiving box 51 is located between the punching mechanism 2 and the pad roller 3, and is located below the metal belt. The paper placing assembly 52 is arranged on one side of the receiving box 51 for placing a paper separator in the receiving box 51 to improve the neatness of the metal accessories collected in the receiving box 51, thereby facilitating the increase of the amount of materials collected by the receiving box 51 and reducing the collision between metal accessories. It should be noted that the receiving box 51 is flared so that the metal accessories shaken out can fall into the receiving box 51.

[0042] Reference Figure 4 The paper placing assembly 52 includes a manipulator 521 and a paper box 522. The paper box 522 is located at one side of the receiving box 51. Separation papers are stacked in the paper box 522. The manipulator 521 is located between the paper box 522 and the receiving box 51 and is used to place the separation papers in the paper box 522 horizontally in the receiving box 51. In this embodiment, the manipulator 521 is a suction cup type manipulator to facilitate the suction and transfer operation of the separation papers.

[0043] Reference Figure 4 and Figure 5The winding mechanism 4 is arranged behind the heightening roller 3 and is used to wind up the metal strip edge material. Specifically, the winding mechanism 4 includes a winding frame 41, a winding disc 42 and a second reversing drum 43. The winding disc 42 is horizontally rotatably connected to the winding frame 41, and the second reversing drum 43 is located in front of the winding disc 42 and vertically rotatably connected to the winding frame 41. The rotation of the winding disc 42 winds up the metal strip edge material, and the metal strip edge material passes through the second reversing drum 43, so that the horizontal metal strip is changed into vertical conveying, so as to facilitate the winding operation of the metal strip edge material on the winding disc 42.

[0044] The implementation principle of a stamping production line for metal accessories in an embodiment of the present application is as follows: when metal accessories need to be produced, the unwinding reel 12 unwinds the metal strip, and when the metal strip passes through the leveling mechanism 7, the leveling block 72 moves horizontally back and forth to push the metal strip to be flat, and when the metal strip passes through the oil dripping pipe 8, the oil dripping pipe 8 drips lubricating oil to the stamping position on the metal strip after the leveling operation, and when the metal strip passes through the stamping mechanism 2, the continuous die 22 stamps the metal accessories into shape and connects them to the metal strip edge material and continues to transport them backward, and as the metal strip changes from a relaxed state to a taut state, the metal accessories are shaken out of the metal strip edge material, and the shaken out metal accessories fall into the receiving box 51 for collection, and the metal strip edge material continues to be transported backward and finally wound on the winding reel 42, and the entire production process of the metal accessories has a high degree of automation, and subsequent staff do not need to perform the operation of breaking the formed metal accessories off the metal strip edge material, which simplifies the process, and the stamping process and the breaking process are carried out simultaneously, which is conducive to improving the production efficiency of metal accessories for new energy vehicles.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stamping production line for metal accessories, characterized in that: The invention comprises a discharging mechanism (1), a punching mechanism (2), a material breaking mechanism and a reeling mechanism (4) which are arranged in sequence. The discharging mechanism (1) is used for automatically discharging and conveying the metal strip. The discharged metal strip passes through the punching mechanism (2). The punching mechanism (2) is used for performing a punching and forming operation on the metal strip. The metal strip after punching passes through the material breaking mechanism. The material breaking mechanism is used for automatically breaking the formed metal accessories from the edge of the metal strip. The material breaking mechanism comprises a heightening roller (3). The height of the heightening roller (3) is higher than the height of the punching position of the punching mechanism (2). When the punching mechanism (2) does not perform a punching operation, the metal strip passing through the punching mechanism (2) is in a relaxed state. When the punching mechanism (2) performs a punching operation, the metal strip is in a taut state. After the metal accessories are broken out, the metal strip is rolled up on the reeling mechanism (4). A collecting mechanism (5) for collecting the metal accessories is also arranged below the material breaking mechanism.

2. A stamping production line for metal parts according to claim 1, characterized in that: The punching mechanism (2) comprises a punching frame (21), a continuous die (22) and a punching drive (23); the punching drive (23) is arranged on the punching frame (21) and is used to drive the continuous die (22) to perform opening and closing operations; the metal belt passes through the continuous die (22); the height of the cushion roller (3) is higher than the height of the continuous die (22); when the continuous die (22) is in an open die state, the metal belt is in a relaxed state; when the continuous die (22) is in a closed die state, the metal belt is in a taut state.

3. A stamping production line for metal parts according to claim 1, characterized in that: The material receiving mechanism (5) comprises a material receiving box (51) and a paper placing assembly (52); the material receiving box (51) is located between the punching mechanism (2) and the raising roller (3), and the material receiving box (51) is located below the metal belt; the paper placing assembly (52) is arranged on one side of the material receiving box (51) for placing spacer paper into the material receiving box (51).

4. A stamping production line for metal parts according to claim 3, characterized in that: The paper placing assembly (52) comprises a robot arm (521) and a paper box (522), wherein the paper box (522) is located on one side of the material receiving box (51), and spacer paper is stacked in the paper box (522), and the robot arm (521) is located between the paper box (522) and the material receiving box (51) and is used to place the spacer paper in the paper box (522) horizontally in the material receiving box (51).

5. A stamping production line for metal parts according to claim 3, characterized in that: The material receiving box (51) is arranged in a flared manner.

6. A stamping production line for metal parts according to claim 1, characterized in that: The unwinding mechanism (1) comprises an unwinding frame (11), an unwinding disc (12) and a first reversing cylinder (13); the unwinding disc (12) is horizontally rotatably connected to the unwinding frame (11); the first reversing cylinder (13) is located behind the unwinding disc (12) in the unwinding direction and is vertically rotatably connected to the unwinding frame (11).

7. A stamping production line for metal parts according to claim 6, characterized in that: The first reversing cylinder (13) is provided with a limiting rod (6), the limiting rod (6) is arranged along the length direction of the first reversing cylinder (13), both ends of the limiting rod (6) are bent towards the direction of the first reversing cylinder (13), and there is a space between the first reversing cylinder (13) and the limiting rod (6) for the metal belt to surround.

8. The stamping production line for metal parts according to claim 1, characterized in that: The invention also comprises a flattening mechanism (7) for flattening the delivered metal strip, wherein the flattening mechanism (7) is located between the unwinding mechanism (1) and the punching mechanism (2), and comprises a support platform (71) for horizontally supporting the metal strip and a flattening block (72) for horizontally reciprocating movement on the support platform (71), wherein a gap is provided between the support platform (71) and the flattening block (72) for the metal strip to pass through, and the flattening block (72) presses the metal strip against the support platform (71).

9. A stamping production line for metal parts according to claim 8, characterized in that: An oil dripping pipe (8) is provided on the support platform (71), and the oil dripping pipe (8) is located between the leveling block (72) and the stamping mechanism (2). The oil dripping pipe (8) is used to drip lubricating oil to the stamping position on the metal strip after the leveling operation.

10. A stamping production line for metal parts according to claim 1, characterized in that: The winding mechanism (4) comprises a winding frame (41), a winding disk (42) and a second reversing cylinder (43); the winding disk (42) is horizontally rotatably connected to the winding frame (41); the second reversing cylinder (43) is located in front of the winding disk (42) and vertically rotatably connected to the winding frame (41).

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