Automatic punch forming device and process for automobile sheet metal parts

Abstract

The invention relates to the technical field of sheet metal stamping, and particularly discloses an automatic stamping forming device and process for automobile sheet metal parts, and the automatic stamping forming device comprises a base, a lower die and an upper die; the lower die is arranged on the top surface of the base through a supporting seat; the upper die is arranged at the top of the lower die; a fixing plate is arranged on the top surface of the upper die; a die handle is fixedly connected to the top surface of the fixed plate; the bottom surface of the fixed plate is connected with the top surface of the base through a group of guide pieces; a concave frame is arranged outside one side of the base; the inner side wall of the concave frame is rotationally connected with an unwinding roller. A feeding mechanism capable of conveying a coiled material wound on the unwinding roller to the lower die is arranged between the base and the concave frame; the roll-shaped sheet metal part is continuously stamped through the opening and closing cooperation of the feeding mechanism, the upper die and the lower die, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet metal stamping, and particularly relates to an automatic stamping forming device and process for automotive sheet metal parts. Background Art

[0002] Sheet metal parts are products processed through sheet metal technology. Stamping is a forming processing method that applies external forces to sheets, strips, tubes, profiles, etc. by a press and a die, causing them to undergo plastic deformation or separation, so as to obtain stamped parts with the required shapes and sizes. In the processing of automotive sheet metal parts, a stamping forming device is commonly used to stamp the sheet metal parts.

[0003] In the prior art, when stamping a coiled sheet metal part, it is usually necessary to first cut the coil with a cutting device, and then stamp and form the cut sheet metal part with a stamping device. It is not possible to continuously stamp the coil, resulting in low production efficiency. Summary of the Invention

[0004] This application provides an automatic stamping forming device and process for automotive sheet metal parts, which can continuously stamp coiled sheet metal parts and improve the production efficiency of sheet metal part stamping.

[0005] An automatic stamping forming device and process for automotive sheet metal parts provided by this application adopt the following technical solutions: An automatic stamping forming device for automotive sheet metal parts includes a base, a lower die, and an upper die; the lower die is arranged on the top surface of the base through a support seat; the upper die is arranged on the top of the lower die, and the upper die can cooperate with the lower die. A fixing plate is arranged on the top surface of the upper die; a die shank that can be installed on a press is fixedly connected to the top surface of the fixing plate; the bottom surface of the fixing plate is connected to the top surface of the base through a set of guiding members; a concave frame is arranged outside one side of the base; a pay-off roll is rotatably connected to the inner side wall of the concave frame; a feeding mechanism is arranged at the position between the base and the concave frame and can convey the coil wound on the pay-off roll to the lower die.

[0006] By adopting the above technical solutions, the coiled sheet metal part to be processed is wound on the pay-off roll, and the coiled sheet metal part is conveyed through the feeding mechanism. When the free end of the coiled sheet metal part is conveyed to the lower die, the press drives the upper die to move, and the sheet metal part is stamped through the cooperation of the upper die and the lower die. Through the cooperation of the feeding mechanism and the opening and closing of the upper die and the lower die, the coiled sheet metal part is continuously stamped, improving the production efficiency.

[0007] Preferably, the feeding mechanism includes a material conveying base, a driving roller, and a driven roller; the material conveying base is arranged outside one side of the concave frame close to the base, and a through cavity is arranged inside the material conveying base; the driving roller is horizontally rotatably connected to the inner wall at one end of the through cavity, and the driving roller is at the same height as the lower die; the driven roller is horizontally rotatably connected to the inner wall of the through cavity above the driving roller, and a clearance channel for the coil material to pass through is left between the driven roller and the driving roller; a motor is installed on the outer wall of the material conveying base; the output end of the motor is coaxially fixedly connected to one end of the driving roller; a first straight gear is coaxially fixedly connected to the outer wall of one end of the driving roller; a second straight gear meshing with the first straight gear is coaxially fixedly connected to the outer wall of one end of the driven roller.

[0008] By adopting the above technical solution, the free end of the coiled sheet metal part is drawn out and passed through the clearance channel, so that the driving roller and the driven roller are respectively in close contact with the bottom surface and the top surface of the coil material. When the coil material is conveyed, the motor is started to drive the driving roller to rotate. Under the meshing cooperation of the first straight gear and the second straight gear, the driving roller drives the driven roller to rotate, and the coil material is pushed forward by the driving roller and the driven roller under the action of friction, realizing the feeding and conveying of the coil material, so as to perform continuous stamping processing on the coil material.

[0009] Preferably, a plurality of supporting rollers are rotatably connected to the inner wall of the through cavity; the plurality of supporting rollers are located on the side of the driving roller close to the base, and the supporting rollers are arranged coaxially and at the same height as the driving roller; a plurality of flattening rollers are rotatably connected to the inner wall of the through cavity; the plurality of flattening rollers are located on the side of the driven roller close to the base, and the flattening rollers are coaxial with the driven roller and have the same bottom surface height; a transmission assembly capable of driving the plurality of flattening rollers to rotate is arranged outside one end of the driven roller.

[0010] By adopting the above technical solution, the coil material passing through the clearance channel passes through the clearance between the supporting rollers and the flattening rollers. When the driving roller drives the driven roller to rotate to continuously convey the coil material, the driven roller drives the plurality of flattening rollers to rotate through the transmission assembly. During the rotation process, the flattening rollers not only play an auxiliary conveying role for the coil material, but also roll-press the conveyed coil material to flatten the coil material, reducing the possibility that the coil material affects the stamping accuracy due to curling.

[0011] Preferably, the transmission assembly includes a first sprocket and a chain; the first sprocket is coaxially fixedly connected to the outer wall of one end of the driven roller; a second sprocket is coaxially fixedly connected to the outer wall of the end of each of the plurality of flattening rollers close to the first sprocket; the chain is sleeved outside the first sprocket and the plurality of second sprockets, and the chain links the first sprocket and the plurality of second sprockets.

[0012] By adopting the above technical solution, under the cooperative work of the first sprocket, the plurality of second sprockets and the chain, the driven roller will drive the plurality of flattening rollers to rotate during the rotation process, thereby realizing the transfer of kinetic energy during the rotation process of the driven roller.

[0013] Preferably, a first rubber sleeve is provided on the outer peripheral surface of the driving roller; a second rubber sleeve is provided on the outer peripheral surface of the driving roller.

[0014] By adopting the above technical solution, the first rubber sleeve and the second rubber sleeve can increase the friction force at the contact parts between the driving roller and the driven roller and the coil material, ensuring the conveying effect of the coil material by the driving roller and the driven roller during rotation.

[0015] Preferably, a pair of limiting rollers are vertically and rotatably connected to the top surface of the base; the pair of limiting rollers are located outside one side of the lower die close to the material feeding seat, and the distance between the two limiting rollers allows the coil material to pass through.

[0016] By adopting the above technical solution, after the coil material passes through the through cavity of the material feeding seat, it will pass through between the two limiting rollers. Through the cooperation of the two limiting rollers, the coil material entering the lower die is guided, reducing the possibility of the coil material shifting.

[0017] Preferably, a pair of rectangular shells are fixedly connected to the bottom surface of the upper die; on the inner walls of the tops of the pair of rectangular shells, sliding plates are slidably connected through springs; the bottom surface of the sliding plate is fixedly connected with a connecting plate extending to the bottom of the rectangular shell; the bottom surface of the connecting plate is fixedly connected with a pressing plate; the position of the pressing plate is lower than the bottom surface position of the punch of the upper die.

[0018] By adopting the above technical solution, when the upper die and the lower die are closed to punch the coil material, the pressing plate will contact the top surface of the coil material prior to the punch of the upper die. As the upper die continues to move downward, the punch of the upper die will contact the coil material and punch the coil material. During this process, the pressing plate will push the sliding plate upward through the connecting plate and compress the spring. Under the elastic force of the spring, the pressing plate will press on the top surface of the coil material, prompting the coil material to remain stable and not easy to move or warp during punching, ensuring the punching accuracy.

[0019] Preferably, a trapezoidal platform is fixedly connected to the top surface of the base on the side of the lower die away from the concave frame; a cylinder is provided on the bottom surface of the fixing plate at the top of the trapezoidal platform; a cutting knife is provided at the output end of the cylinder; the side wall of the trapezoidal platform away from the lower die is arranged as an inclined surface sloping downward; a collection box is provided outside the base on the side away from the concave frame at the bottom of the inclined surface of the trapezoidal platform.

[0020] By adopting the above technical solution, when the upper die and the lower die are closed to punch the coil material, the cylinder will drive the cutting knife to move downward to cut the part of the coil material that has been punched, prompting the formed sheet metal part to separate from the coil material and slide down along the inclined surface of the trapezoidal platform into the collection box for collection, so as to realize the collection work of the sheet metal part.

[0021] Preferably, a guiding plate is fixedly connected to the inner wall of the support seat and is inclined; one end of the guiding plate extends to the bottom of the lower die, and the other end extends outside the support seat; a waste box is provided outside the base at the bottom of the guiding plate.

[0022] By adopting the above technical solution, during the coil stamping process, the waste material punched from the coil will slide down through the material guide plate at the bottom of the lower die into the waste box for collection, so as to realize the collection of waste material and facilitate the subsequent unified treatment of waste material by the staff.

[0023] An automatic stamping and forming process for automotive sheet metal parts, based on the above-mentioned automatic stamping and forming device for automotive sheet metal parts, the process includes the following steps: S1: Pull out one end of the coil wound around the unwinding roller, pass the free end of the coil through the through cavity of the material feeding seat and then lay it on the lower die to complete the preparation work for continuous stamping of the coil. S2: Convey the coil through the feeding mechanism so that the upper die and the lower die continuously stamp the coil during the reciprocating die opening and closing process. S3: During the stamping process when the upper die and the lower die are closed, start the cylinder to drive the cutting knife to shear the stamped part of the coil, so as to realize the collection of the formed sheet metal parts.

[0024] In summary, the present application has the following beneficial effects: 1. By passing the free end of the coil through the channel gap and laying it on the lower die, when stamping the coil, start the motor to drive the driving roller to rotate. Under the meshing cooperation of the first spur gear and the second spur gear, the driving roller drives the driven roller to rotate, and the coil is pushed forward under the action of friction force to realize the automatic feeding of the coil. When the coil laid on the lower die moves forward to a suitable position, stop the conveying, and the press drives the upper die to move and close with the lower die to stamp the coil. After the die is opened, continue to convey the coil to realize the continuous stamping of the coil and improve the production efficiency. 2. Pass the coil through the gap between the supporting roller and the flattening roller. During the feeding and conveying process of the coil, the driven roller drives a plurality of flattening rollers to rotate through the transmission component. The rotating flattening rollers not only play an auxiliary conveying role for the coil, but also can roll and flatten the coil, thereby reducing the possibility that the coil affects the stamping accuracy due to curling. 3. When the upper die and the lower die are closed to stamp the coil, the pressure plate will contact the coil prior to the upper die punch. As the upper die continues to move downward, the upper die punch will contact the coil and stamp the coil. During this process, the pressure plate will push the sliding plate upward and compress the spring through the connecting plate. The pressure plate will be pressed on the top surface of the coil under the elastic force of the spring, so as to ensure that the coil remains stable and is not easy to move or warp during the stamping process, and ensure the stamping accuracy. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of an automatic stamping and forming device for automotive sheet metal parts in the present application; Figure 2It is a schematic diagram of the mating structure of the base, lower die and upper die in this application; Figure 3 It is a schematic diagram of the internal structure of the material feeding base in this application; Figure 4 It is a schematic diagram of the mating structure of the driving roller and the driven roller in this application; Figure 5 It is a schematic diagram of the mating structure of the driven roller, transmission assembly and multiple flattening rollers in this application; Figure 6 It is a schematic diagram of the mating structure of the upper die, rectangular shell and pressing plate in this application.

[0026] Explanation of reference numerals: 1. Base; 11. Support base; 111. Material guiding plate; 12. Limiting roller; 13. Trapezoidal platform; 2. Lower die; 3. Upper die; 31. Fixed plate; 311. Guide member; 32. Die shank; 33. Rectangular shell; 34. Spring; 35. Slide plate; 36. Connecting plate; 37. Pressing plate; 38. Cylinder; 381. Cutting knife; 4. Concave frame; 41. Unwinding roller; 5. Feeding mechanism; 51. Material feeding base; 511. Through cavity; 52. Driving roller; 521. First spur gear; 522. First rubber sleeve; 53. Driven roller; 531. Second spur gear; 532. Second rubber sleeve; 54. Motor; 55. Support roller; 56. Flattening roller; 57. Transmission assembly; 571. First sprocket; 572. Chain; 573. Second sprocket; 6. Collection box; 7. Scrap box. Detailed implementation manners

[0027] The present invention will be further described in detail below with reference to the accompanying drawings. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper", "lower", "bottom surface" and "top surface" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0028] The present invention discloses an automatic stamping and forming device for automobile sheet metal parts. As Figure 1 and Figure 2 shown, it includes a base 1, a lower die 2 and an upper die 3. A support base 11 is fixedly connected to the top surface of the base 1, the lower die 2 is fixedly connected to the top surface of the support base 11, a fixed plate 31 located above the lower die 2 is fixedly connected to the top surface of the base 1 through a set of guide members 311, a die shank 32 that can be installed on a press is fixedly connected to the top surface of the fixed plate 31, the upper die 3 is fixedly connected to the bottom surface of the fixed plate 31, the upper die 3 can cooperate with the lower die 2, the guide member 311 includes a guide post and a guide sleeve, the guide post is vertically fixedly connected to the bottom surface of the fixed plate 31, the guide sleeve is vertically fixedly connected to the position on the top surface of the base 1 corresponding to the guide post, the bottom of the guide post is vertically inserted into the inside of the guide sleeve, and the guide post and the guide sleeve are in sliding fit.

[0029] When stamping a sheet metal part, the sheet metal part is placed on the lower die 2, and the upper die 3 is driven by a press to move. The sheet metal part is stamped under the combined die working of the upper die 3 and the lower die 2. During the die closing process, the movement of the upper die 3 is guided and limited through the cooperation of the guide pillar and the guide sleeve to ensure the stamping accuracy of the sheet metal part.

[0030] As Figure 1 、 Figure 3 and Figure 4 shown, a concave frame 4 is provided on the outer side of one side of the base 1. A pay-off roll 41 capable of winding the coil is rotatably connected to the inner wall of the concave frame 4. A feeding mechanism 5 is provided on the outer side of the base 1 near the concave frame 4 at a position between the concave frame 4 and the base 1. The feeding mechanism 5 includes a material conveying seat 51, a driving roller 52, a driven roller 53 and a motor 54. The material conveying seat 51 is arranged on the outer side of the base 1 near the concave frame 4. The material conveying seat 51 is horizontally provided with a through cavity 511 pointing from the concave frame 4 to the base 1. The driving roller 52 is horizontally rotatably connected to the inner wall of one end of the through cavity 511 near the concave frame 4, and the driving roller 52 is at the same height as the lower die 2. The driven roller 53 is horizontally rotatably connected to the inner wall of one end of the through cavity 511 near the concave frame 4. The driven roller 53 is located above the driving roller 52 and is coaxial with the driving roller 52. A gap channel for the coil to pass through is left between the driven roller 53 and the driving roller 52. The motor 54 is horizontally installed on the outer wall of the material conveying seat 51. The output end of the motor 54 is coaxially fixed to one end of the driving roller 52. A first straight gear 521 located outside the material conveying seat 51 is coaxially fixed to the outer wall of the end of the driving roller 52 away from the motor 54. A second straight gear 531 meshing with the first straight gear 521 is coaxially fixed to the outer wall of the end of the driven roller 53 away from the motor 54.

[0031] When stamping the coil, the coil wound on the pay-off roll 41 is drawn out and sent into the through cavity 511 of the material conveying seat 51. The free end of the coil is first passed through the channel gap formed by the cooperation of the driving roller 52 and the driven roller 53. When the motor 54 is started to drive the driving roller 52 to rotate, the driving roller 52 drives the driven roller 53 to rotate through the meshing cooperation of the first straight gear 521 and the second straight gear 531, so that the coil is pushed forward under the action of friction, realizing the automatic feeding of the coil, so as to automatically convey the coil to a specified position on the lower die 2 for continuous stamping processing and improve the processing efficiency.

[0032] As Figure 3 and Figure 4 shown, a first rubber sleeve 522 is fixed on the outer peripheral surface of the driving roller 52, and a second rubber sleeve 532 is fixed on the outer peripheral surface of the driven roller 53.

[0033] The settings of the first rubber sleeve 522 and the second rubber sleeve 532 can increase the friction force at the contact parts between the driving roller 52 and the driven roller 53 and the coil, thereby ensuring the conveying effect of the coil.

[0034] As Figure 1 and Figure 3 shown, a plurality of support rollers 55 are rotatably connected to the inner wall of the through cavity 511 and are located on the side of the driving roller 52 close to the base 1. The plurality of support rollers 55 are arranged at intervals along the length direction of the through cavity 511. The support rollers 55 are at the same height and coaxial with the driving roller 52. A plurality of flattening rollers 56 are also rotatably connected to the inner wall of the through cavity 511 and are located on the side of the driven roller 53 close to the base 1. The plurality of flattening rollers 56 are arranged at intervals along the length direction of the through cavity 511. The flattening rollers 56 are coaxial with the driven roller 53 and have the same bottom surface height.

[0035] The coil passing through the gap channel is sent out of the feeding seat 51 after passing through the gap between the support rollers 55 and the flattening rollers 56. During the feeding and conveying process of the coil, the flattening rollers 56 provided are used to roll and flatten the coil, so as to make the coil flat and reduce the influence of the coil curling on the stamping accuracy.

[0036] As Figure 3 and Figure 5 shown, a transmission assembly 57 is arranged outside one end of the driven roller 53 and is located outside the feeding seat 51. The transmission assembly 57 can enable the driven roller 53 to drive a plurality of flattening rollers 56 to rotate. The transmission assembly 57 includes a first sprocket 571 and a chain 572. The first sprocket 571 is coaxially fixed to the outer wall of one end of the driven roller 53. A second sprocket 573 is coaxially fixed to the outer wall of the end of each flattening roller 56 close to the first sprocket 571. The chain 572 is sleeved outside the first sprocket 571 and a plurality of second sprockets 573, and the chain 572 makes the first sprocket 571 and a plurality of second sprockets 573 linked.

[0037] Through the cooperative work of the first sprocket 571, a plurality of second sprockets 573 and the chain 572, the driven roller 53 can drive a plurality of flattening rollers 56 to rotate during the rotation process, so that the flattening rollers 56 can roll and flatten the coil. At the same time, the rotating flattening rollers 56 also have an effect of assisting in feeding the coil.

[0038] As Figure 1 and Figure 2 shown, a limiting roller 12 is vertically and rotatably connected to the top surface of the base 1 and is located on the side of the lower die 2 close to the feeding seat 51. The distance between the two limiting rollers 12 allows the coil to pass through, and the limiting roller 12 is in sliding fit with the side wall of the coil.

[0039] During the coil conveying process, the cooperative work of the two limiting rollers 12 can guide the coil entering the lower die 2, thereby reducing the possibility of the coil shifting.

[0040] As Figure 1 and Figure 6As shown in the figure, a pair of rectangular shells 33 are fixedly connected to the bottom surface of the upper die 3, which are respectively located on both sides of the punch of the upper die 3. Slide plates 35 are horizontally slidably connected to the inner walls of the two rectangular shells 33. The top surface of the slide plate 35 is connected to the inner wall of the top end of the rectangular shell 33 through a spring 34. A connecting plate 36 vertically fixedly connected to the bottom surface of the slide plate 35 extends out of the bottom of the rectangular shell 33. A pressing plate 37 is horizontally fixedly connected to the bottom surface of the connecting plate 36. The bottom surface of the pressing plate 37 is lower than the bottom surface of the punch of the upper die 3, and the pressing plate 37 can be pressed on the coil material.

[0041] When the upper die 3 moves downward to close the mold with the lower die 2, the pressing plate 37 will contact the coil material prior to the punch of the upper die 3. As the upper die 3 continues to move downward, the upper die 3 will close the mold with the lower die 2 and stamp the coil material. During this process, the pressing plate 37 will push the slide plate 35 upward through the connecting plate 36 and compress the spring 34. Under the elastic force of the spring 34, the pressing plate 37 will be pressed on the top surface of the coil material, prompting the coil material to remain stable and not easy to move or warp, ensuring the stamping accuracy.

[0042] As Figure 1 and Figure 2 shown in the figure, a trapezoidal platform 13 is fixedly connected to the top surface of the base 1, which is located on the side of the lower die 2 away from the material conveying seat 51. The top surface of the trapezoidal platform 13 is at the same height as the lower die 2. The side wall of the trapezoidal platform 13 away from the lower die 2 is inclined downward. A collection box 6 is arranged outside the base 1 on the side away from the material conveying seat 51 and is located at the bottom of the inclined surface of the trapezoidal platform 13. A cylinder 38 is vertically installed at the position of the bottom surface of the fixed plate 31 corresponding to the trapezoidal platform 13. A cutter 381 capable of cutting the coil material is arranged at the output end of the cylinder 38.

[0043] When the upper die 3 and the lower die 2 close the mold to stamp the coil material, the cylinder 38 will drive the cutter 381 to move downward to cut the part of the coil material that has been stamped, prompting the formed sheet metal part to separate from the coil material and slide down along the inclined surface of the trapezoidal platform 13 into the collection box 6 for collecting the stamped sheet metal parts.

[0044] As Figure 1 and Figure 2 shown in the figure, a guide plate 111 is fixedly connected to the inner wall of the support seat 11 and is arranged obliquely downward. The high end of the guide plate 111 is located at the bottom of the lower die 2, and the low end of the guide plate 111 extends out of the outside of the support seat 11. A waste box 7 is arranged outside the base 1 at the bottom of the low end of the guide plate 111.

[0045] During the stamping process of the coil material, the punched waste will fall on the guide plate 111 and slide down along the guide plate 111 into the waste box 7, thus realizing the collection of waste for subsequent unified treatment.

[0046] An automatic stamping and forming process for automotive sheet metal parts, which includes the following steps: S1: Pull out the free end of the coil wound around the unwinding roller 41, first pass it through the channel gap formed by the cooperation of the driving roller 52 and the driven roller 53, then pass it through the gap between the supporting roller 55 and the flattening roller 56, and finally pass the coil through the gap between the two limiting rollers 12 and place it on the lower die 2 to complete the preparatory work for continuous stamping of the coil. S2: Start the motor 54 to drive the driving roller 52 to rotate. The driving roller 52 drives the driven roller 53 to rotate through the meshing cooperation of the first straight gear 521 and the second straight gear 531. The coil is pushed forward under the action of friction so that the upper die 3 and the lower die 2 perform continuous stamping on the coil during the reciprocating die opening and closing process. S3: During the stamping process when the upper die 3 and the lower die 2 are closed, start the cylinder 38 to drive the cutter 381 to cut the stamped part of the coil. The cut sheet metal part will separate from the coil and slide down along the inclined surface of the trapezoidal table 13 into the collection box 6 to realize the collection of the formed sheet metal parts.

[0047] Working principle: Pull out the coil wound around the unwinding roller 41 and pass the free end of the coil through the through cavity 511 of the material feeding seat 51. First pass the free end of the coil through the channel gap formed by the cooperation of the driving roller 52 and the driven roller 53, then pass the coil through the gap between the supporting roller 55 and the flattening roller 56, and finally pass the coil passing through the material feeding seat 51 through the gap between the two limiting rollers 12 and place it on the lower die 2. When performing stamping on the coil, start the motor 54 to drive the driving roller 52 to rotate. Under the meshing cooperation of the first straight gear 521 and the second straight gear 531, the driving roller 52 drives the driven roller 53 to rotate. The coil is pushed forward under the action of friction, thereby realizing the automatic feeding of the coil. When the coil placed on the lower die 2 moves forward to the appropriate position, stop the conveying. The press drives the upper die 3 to move and close with the lower die 2 to stamp the coil. After the die is opened, convey the coil again to realize continuous stamping of the coil. When the mold is closed to stamp the coil, the waste material punched from the coil will slide down through the guide plate 111 at the bottom of the lower die 2 into the waste box 7 for collection. The cylinder 38 will drive the cutter 381 to move down to cut the part of the coil that has been stamped, causing the formed sheet metal part to separate from the coil and slide down along the inclined surface of the trapezoidal table 13 into the collection box 6 for collection. During the process of conveying the coil for continuous stamping, the driven roller 53 will drive a plurality of flattening rollers 56 to rotate through the transmission assembly 57. The rotating flattening rollers 56 can not only play an auxiliary conveying role for the coil, but also roll and flatten the coil, reducing the possibility that the coil affects the stamping accuracy due to curling and ensuring the stamping quality of the coil.

[0048] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automatic stamping device for automobile sheet metal parts, characterized in that: The invention comprises a base (1), a lower die (2) and an upper die (3); the lower die (2) is arranged on the top surface of the base (1) through a support seat (11); the upper die (3) is arranged on the top of the lower die (2), the upper die (3) can cooperate with the lower die (2), and a fixing plate (31) is arranged on the top surface of the upper die (3); the top surface of the fixing plate (31) is fixedly connected with a die handle (32) which can be installed on a press machine; the bottom surface of the fixing plate (31) is connected to the top surface of the base (1) through a group of guide members (311); a concave frame (4) is arranged on the outside of one side of the base (1); a reeling roller (41) is rotatably connected to the inner side wall of the concave frame (4); a feeding mechanism (5) which can transport the coiled material wound on the reeling roller (41) to the lower die (2) is arranged between the base (1) and the concave frame (4).

2. The automatic stamping and forming device for automobile sheet metal parts according to claim 1, characterized in that: The feeding mechanism (5) comprises a feeding seat (51), a driving roller (52) and a driven roller (53); the feeding seat (51) is arranged outside a side of the concave frame (4) close to the base (1), and a through cavity (511) is arranged in the feeding seat (51); the driving roller (52) is horizontally rotatably connected to the inner wall of one end of the through cavity (511), and the driving roller (52) is at the same height as the lower mold (2); the driven roller (53) is horizontally rotatably connected to the through cavity (511) at the top of the driving roller (52). 11), a gap channel is left between the driven roller (53) and the driving roller (52) on the inner wall for the coil to pass through; a motor (54) is installed on the outer wall of the feeding seat (51); the output end of the motor (54) is coaxially fixedly connected to one end of the driving roller (52); a first spur gear (521) is coaxially fixedly connected to the outer wall of one end of the driving roller (52); a second spur gear (531) meshing with the first spur gear (521) is coaxially fixedly connected to the outer wall of one end of the driven roller (53).

3. The automatic stamping and forming device for automobile sheet metal parts according to claim 2, characterized in that: A plurality of support rollers (55) are rotatably connected to the inner wall of the through cavity (511); the plurality of support rollers (55) are located on a side of the driving roller (52) close to the base (1), and the support rollers (55) and the driving roller (52) are coaxially arranged at the same height; a plurality of flattening rollers (56) are rotatably connected to the inner wall of the through cavity (511); the plurality of flattening rollers (56) are located on a side of the driven roller (53) close to the base (1), and the flattening rollers (56) and the driven roller (53) are coaxially arranged and have the same bottom height; a transmission assembly (57) is arranged on the outside of one end of the driven roller (53) and can drive the plurality of flattening rollers (56) to rotate.

4. The automatic stamping and forming device for automobile sheet metal parts according to claim 3, characterized in that: The transmission assembly (57) comprises a first sprocket (571) and a chain (572); the first sprocket (571) is coaxially fixed to the outer wall of one end of the driven roller (53); a second sprocket (573) is coaxially fixed to the outer wall of the end of each of the plurality of flattening rollers (56) close to the first sprocket (571); the chain (572) is sleeved on the outside of the first sprocket (571) and the plurality of second sprockets (573), and the chain (572) enables the first sprocket (571) and the plurality of second sprockets (573) to be linked.

5. The automatic stamping and forming device for automobile sheet metal parts according to claim 2, characterized in that: The outer circumferential surface of the driving roller (52) is provided with a first rubber sleeve (522); the outer circumferential surface of the driving roller (52) is provided with a second rubber sleeve (532).

6. The automatic stamping and forming device for automobile sheet metal parts according to claim 2, characterized in that: The top surface of the base (1) is vertically rotatably connected to a pair of limiting rollers (12); the pair of limiting rollers (12) are located outside one side of the lower mold (2) close to the feeding seat (51), and the distance between the two limiting rollers (12) is sufficient for the coil to pass through.

7. The automatic stamping and forming device for automobile sheet metal parts according to claim 1, characterized in that: A pair of rectangular shells (33) are fixedly connected to the bottom surface of the upper die (3); a pair of slide plates (35) are slidably connected to the inner walls of the top ends of the pair of rectangular shells (33) via springs (34); a connecting plate (36) extending to the bottom of the rectangular shells (33) is fixedly connected to the bottom surface of the slide plates (35); a pressing plate (37) is fixedly connected to the bottom surface of the connecting plate (36); the position of the pressing plate (37) is lower than the bottom surface of the punch of the upper die (3).

8. The automatic stamping and forming device for automobile sheet metal parts according to claim 1, characterized in that: The top surface of the base (1) is fixedly connected with a trapezoidal platform (13) located on the side of the lower die (2) away from the concave frame (4); the bottom surface of the fixed plate (31) is provided with a cylinder (38) located on the top of the trapezoidal platform (13); the output end of the cylinder (38) is provided with a cutter (381); the side wall of the trapezoidal platform (13) away from the lower die (2) is arranged in a slanted surface inclined downward; and the base (1) is provided with a collection box (6) located at the bottom of the slanted surface of the trapezoidal platform (13) on the outside of the side away from the concave frame (4).

9. The automatic stamping and forming device for automobile sheet metal parts according to claim 1, characterized in that: A material guide plate (111) arranged obliquely is fixedly connected to the inner wall of the support seat (11); one end of the material guide plate (111) extends to the bottom of the lower mold (2), and the other end extends to the outside of the support seat (11); a waste box (7) located at the bottom of the material guide plate (111) is arranged outside the base (1).

10. An automatic stamping and forming process for automobile sheet metal parts, based on the automatic stamping and forming device for automobile sheet metal parts according to any one of claims 1 to 9, characterized in that: The process includes the following steps: S1: one end of the coil wound on the unwinding roller (41) is pulled out, and the free end of the coil passes through the through cavity (511) of the feeding seat (51) and is then placed on the lower die (2), thus completing the preparation work for the continuous stamping process of the coil; S2: The coil is conveyed by the feeding mechanism (5) so that the upper die (3) and the lower die (2) can continuously stamp the coil during the reciprocating opening and closing of the die; S3: During the stamping process of the upper die (3) and the lower die (2), the cylinder (38) is started to drive the cutter (381) to shear the stamping completed part of the coil, so as to realize the collection of the formed sheet metal parts.

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