Stamping device for automobile parts and stamping method of stamping device

Abstract

The invention relates to the technical field of stamping, and particularly discloses a stamping device for automobile parts and a stamping method thereof.The stamping device is characterized in that a lower die plate is fixedly connected with a rotary disc, an upper die plate is arranged above the lower die plate in an up-and-down sliding mode, a top plate is arranged above the upper die plate in an up-and-down sliding mode, and a clamping piece is rotationally installed on the side edge of the top plate and provided with a first clamping groove; the top face of the first clamping groove and the bottom face of the clamping piece are inclined faces, the first limiting piece is installed on the side edge of the upper die plate and can be clamped in the first clamping groove, the second limiting piece is installed on the side edge of the lower die plate, and the first driving piece can drive the top plate and the clamping piece to move downwards, so that the first limiting piece is separated from the first clamping groove, and the second limiting piece is clamped in the first clamping groove. The driving part II can drive the turntable to rotate; by prolonging the pressing time of the upper die plate on the workpiece, the phenomenon that the workpiece rebounds when the workpiece is taken out can be effectively avoided, meanwhile, the pressing work of the next blank cannot be affected, and the punching efficiency can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of stamping, and in particular to a stamping device and a stamping method for automobile parts. Background Art

[0002] Stamping is a forming method that relies on presses and dies to apply external force to plates, strips, tubes and profiles to cause plastic deformation or separation, thereby obtaining workpieces of desired shape and size. The blanks for stamping are mainly hot-rolled and cold-rolled steel plates and strips. Stamping is used in many fields of the national economy, for example, in aviation, military industry, machinery, agricultural machinery, electronics, information, railways, post and telecommunications, transportation, chemical industry, medical equipment, daily electrical appliances and light industry.

[0003] A stamping device is disclosed in a patent document with authorization announcement number CN218903232U, in which a stamping part is arranged above a base and can move back and forth in a vertical direction, and a stamping platform is arranged below the stamping part. After the stamping part completes stamping of a workpiece to be processed on the stamping platform directly below and moves vertically upward, the stamping platform can be moved relative to the base in a preset direction to be offset from the stamping part, so that the next workpiece to be processed can be placed on the stamping platform offset from the stamping part, and even if the stamping part is pressed down by mistake, it will not accidentally injure the operator, and safety accidents can be avoided; after the workpiece to be processed is placed, the stamping platform drives the workpiece to be processed to move relative to the base to directly below the stamping part, and then the stamping part moves vertically downward to apply pressure to the workpiece to be processed, thereby obtaining parts of the required shape and size.

[0004] If the stamping device in the above patent document moves the stamping part upward immediately after completing the stamping of the blank, there is a possibility of springback of the workpiece after stamping. If the stamping time of the stamping part on the blank is extended, the stamping efficiency will be reduced. Summary of the invention

[0005] The present invention provides a stamping device and a stamping method for automobile parts, aiming to solve the problem in the related art that a workpiece may rebound after stamping or the stamping efficiency is low.

[0006] A stamping device for automobile parts, comprising a base, a turntable, a plurality of die assemblies, a plurality of position limiting assemblies, a first driving member and a second driving member, wherein the turntable is rotatably mounted on the upper portion of the base, a plurality of die assemblies are arranged on the upper portion of the turntable at intervals along the circumference of the turntable, the die assembly comprises a lower die plate, an upper die plate and a top plate, the lower die plate is fixedly connected to the turntable, the upper die plate is arranged above the lower die plate for sliding up and down, the top plate is arranged above the upper die plate for sliding up and down, and a plurality of position limiting assemblies are respectively connected to a plurality of die assemblies in a one-to-one correspondence; The limit assembly includes a clamping member, a limit member 1 and a limit member 2, the clamping member is rotatably mounted on the side of the top plate, the clamping member is provided with a clamping slot 1, the top surface of the clamping slot 1 and the bottom surface of the clamping member are both inclined surfaces, the limit member 1 is fixedly mounted on the side of the upper template and can be clamped in the clamping slot 1, the limit member 2 is fixedly mounted on the side of the lower template and is located directly below the limit member 1, the driving member 1 can drive the top plate and the clamping member to move downward, so that the limit member 1 is disengaged from the clamping slot 1, and the limit member 2 is clamped in the clamping slot 1, and the driving member 2 can drive the turntable to rotate.

[0007] Preferably, a second card slot is further provided on the clamping member, and the second card slot is located above the first card slot, and the bottom surface of the second card slot is a horizontal plane, and an elastic member 1 is provided between the top plate and the upper template.

[0008] Preferably, it also includes multiple reset assemblies, which are respectively connected to the multiple mold assemblies in a one-to-one correspondence. The reset assembly includes a sliding member, two connecting rods and an elastic member 2. The sliding member is slidably installed on the turntable, and the ends of the two connecting rods that are close to each other are rotatably connected and are both connected to the sliding member. The ends of the two connecting rods that are far away from each other are respectively rotatably connected to the top plate and the lower template. The elastic member 2 is connected to the sliding member. When the top plate moves downward, the sliding member can be moved and the elastic member 2 can be compressed. The effect is that when the top plate and the upper template are controlled to move downward to stamp the blank, the sliding member will move in a direction away from the mold assembly and compress the elastic member 2. When the pressed workpiece needs to be taken out, the elastic pushing force of the compressed elastic member 2 can be used to move the top plate and the upper template upward and separate from the lower template.

[0009] Preferably, the reset assembly also includes a push rod 1 and a moving frame, the push rod 1 is slidably installed at the side of the lower template, and when the limiting member 2 is clamped in the clamping groove 1, the push rod 1 corresponds to the bottom end of the clamping member, the moving frame is connected to the turntable for sliding up and down, and the moving frame is provided with an inclined surface that fits the push rod 1. When the moving frame moves downward, the inclined surface on the moving frame can push the push rod 1 to move toward the bottom end direction of the clamping member. The effect is that when it is necessary to take out the pressed workpiece, the moving frame is controlled to move downward, and the inclined surface on the moving frame can push the push rod 1 to move toward the bottom end direction of the clamping member, and push the clamping member to rotate, so that the limiting member 2 is disengaged from the clamping groove 1. At this time, the elastic pushing force of the elastic member 2 can be used to make the top plate and the upper template move upward.

[0010] Preferably, a discharge position is provided on the base, and a downwardly recessed arc groove is provided on the upper surface of the base where the discharge position is located. A positioning rod is fixedly connected to the bottom of the movable frame, and the positioning rod is affixed to the upper surface of the base. When the movable frame moves to the discharge position with the turntable, the positioning rod can pass through the arc groove. An elastic member three is also installed on the movable frame, and when the positioning rod is affixed to the upper surface of the base, the elastic member three is in a compressed state.

[0011] Preferably, the mold assembly is provided with a control assembly for controlling the rotation of the clamping member, the control assembly includes a second push rod, a fixed rod, a stopper and a fourth elastic member, the second push rod is slidably arranged at the side of the top plate, and abuts against the lower side of the rotation center of the clamping member, the fixed rod is fixed in position, the fixed rod and the clamping member are respectively located on both sides of the second push rod, a protrusion is provided on the fixed rod on the side facing the second push rod, the stopper is slidably arranged at the side of the top plate, the stopper and the second push rod are symmetrically distributed on both sides of the clamping member, and the fourth elastic member is connected to the stopper.

[0012] Preferably, a discharging assembly is provided at the discharging position, and the discharging assembly includes a driving member three and a suction cup one, the driving member three is installed on the upper part of the turntable, and the suction cup one is fixedly installed at the output end of the driving member three, and the driving member three can drive the suction cup one to move radially along the turntable, which has the effect that by controlling the driving member three and the suction cup one, it is convenient to remove the pressed workpiece from the lower template.

[0013] Preferably, a feeding position is provided on the base, and a feeding assembly is provided at the feeding position, and the feeding assembly includes a driving member four and a suction cup two, the driving member four is installed on the upper part of the turntable, and the suction cup two is fixedly installed at the output end of the driving member four, and the driving member four can drive the suction cup two to move radially along the turntable, which has the effect that by controlling the driving member four and the suction cup two, the blank to be stamped can be transferred to the lower template.

[0014] A stamping method based on a stamping device for automobile parts comprises the following steps: The turntable is driven to rotate by the second driving member, so that one of the mold assemblies is rotated to the position where the first driving member is located; The blank to be punched is placed on the lower template, and the top plate, the clamping member and the upper template are driven downward by the driving member 1. When the limiting member 2 is clamped in the clamping groove 1, the upper template completes the punching of the blank, and the upper template maintains the pressing state of the workpiece; Next, the turntable is driven to rotate by the driving member 2, so that the next mold assembly is rotated to the position where the driving member 1 is located, and then the above operation is repeated to continue the stamping work of the blank; When the stamping is completed and the die assembly that remains in the pressed state rotates to the set position, the pressed workpiece is taken out.

[0015] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: when the blank is placed on the lower template and the upper template is controlled to move downward to stamp the blank, after the stamping is completed, the limit member 2 will be clamped in the clamping slot 1, so that the position of the upper template can remain unchanged, thereby allowing the upper template to maintain a pressing state on the workpiece, and then the driving member 2 is controlled to drive the turntable to rotate, so that the next mold assembly is rotated to the position where the driving member 1 is located, and the stamping operation can continue. When the stamping is completed and the mold assembly that remains in the pressing state rotates to the set position, the pressed workpiece is taken out, and by extending the pressing time of the upper template on the workpiece, the phenomenon of the workpiece rebounding when the workpiece is taken out can be effectively avoided. At the same time, it will not affect the pressing work of the next blank, and the stamping efficiency can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a schematic diagram of the installation structure of the mold assembly of the present invention.

[0018] Figure 3 It is a schematic diagram of the installation structure of the control component of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the mobile rack of the present invention.

[0020] Figure 5 It is a schematic diagram of the connection structure of the driving member 1 of the present invention.

[0021] Figure 6 It is a schematic diagram of the arrangement structure of the arc groove of the present invention.

[0022] Figure 7 It is a structural schematic diagram of the support frame of the present invention.

[0023] Reference numerals: 1. Base; 11. Arc groove; 12. Positioning column; 13. Support frame; 14. Driving member 5; 2. Turntable; 21. Vertical rod; 31. Lower template; 311. Guide rod; 32. Upper template; 33. Top plate; 41. Card connector; 411. Card slot 1; 412. Card slot 2; 42. Position limiter 1; 43. Position limiter 2; 51, driving member 1; 511, lower pressure plate; 52, driving member 2; 53, gear; 54, gear ring; 55, elastic member 1; 61, sliding member; 62, connecting rod; 63, elastic member 2; 64, top rod 1; 65, moving frame; 66, positioning rod; 67, elastic member 3; 71. Push rod 2; 72. Fixing rod; 721. Protruding portion; 73. Stopper; 74. Elastic member 4; 81. Driving member three; 82. Suction cup one; 91. Driving member four; 92. Suction cup two. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0025] like Figures 1 to 7 As shown, the stamping device for automobile parts according to the embodiment of the present invention includes a base 1, a turntable 2, a plurality of mold assemblies, a plurality of limit assemblies, a plurality of reset assemblies, a driving member 1 51 and a driving member 2 52.

[0026] The turntable 2 is rotatably mounted on the upper part of the base 1, and the second driving member 52 can drive the turntable 2 to rotate. Specifically, the second driving member 52 can be a motor, and a gear 53 is fixedly mounted on its output end. A ring gear 54 is fixedly mounted on the turntable 2, and the ring gear 54 is meshed with the gear 53 to control the operation of the second driving member 52. Through the meshing of the gear 53 and the ring gear 54, the turntable 2 can be driven to rotate.

[0027] Multiple mold assemblies are arranged at intervals along the circumference of the turntable 2 on the upper part of the turntable 2, and the mold assembly includes a lower mold plate 31, an upper mold plate 32 and a top plate 33. The lower mold plate 31 is fixedly connected to the turntable 2, the upper mold plate 32 is slidably arranged above the lower mold plate 31, and the top plate 33 is slidably arranged above the upper mold plate 32.

[0028] Specifically, in the present embodiment, the number of the mold assemblies is 4, and the 4 mold assemblies are evenly spaced apart on the upper part of the turntable 2 along the circumference of the turntable 2. A vertically arranged guide rod 311 is fixedly connected to the lower template 31, and the upper template 32 and the top plate 33 are both slidably mounted on the guide rod 311 up and down, so that when the turntable 2 is controlled to rotate, the mold assemblies can be driven to rotate synchronously. In addition, when the blank is stamped, the blank is first placed on the lower template 31, and then the top plate 33 is controlled to move downward, and the top plate 33 will drive the upper template 32 to move downward, that is, the blank can be stamped.

[0029] A positioning column 12 is fixedly installed on the upper part of the base 1, and the positioning column 12 passes through the middle of the turntable 2. A driving member 51 is fixedly installed on the positioning column 12. The driving member 51 can be a hydraulic cylinder, and the telescopic end at its bottom is fixedly connected to a lower pressure plate 511. A feeding position is provided on the base 1, and the driving member 51 is arranged at the feeding position. When the mold assembly rotates to the feeding position with the turntable 2, the driving member 51 is controlled to extend, that is, the top plate 33 and the lower template 31 can be driven to move downward through the lower pressure plate 511.

[0030] The positioning column 12 is connected to the support frame 13 for sliding up and down. A driving member 14 for driving the support frame 13 to rise and fall is fixedly installed on the base 1. The driving member 14 can be a hydraulic cylinder, and its upper telescopic end is fixedly connected to the support frame 13. The support frame 13 can be driven to rise and fall by controlling the extension and retraction of the driving member 14.

[0031] A feeding assembly is provided at the feeding position, and the feeding assembly includes a driving member 91 and a suction cup 92. The driving member 91 is fixedly mounted on the support frame 13. The driving member 91 can be a hydraulic cylinder and can be extended and retracted in the radial direction of the turntable 2. The suction cup 92 is fixedly mounted at the output end of the driving member 91. The suction port of the suction cup 92 faces downward. The driving member 91 is controlled to be extended and retracted, that is, the suction cup 92 can be driven to move along the radial direction of the turntable 2. When feeding, the driving member 91 is first controlled to extend and retract. , so that the suction cup 2 92 moves to the outside of the turntable 2, and then the driving member 5 14 is controlled to contract, driving the support frame 13, the driving member 4 91 and the suction cup 2 92 to move downward, so that the suction cup 2 92 contacts with the blank, and the blank is adsorbed by the suction cup 2 92, and then the driving member 4 91 and the driving member 5 14 are controlled respectively, so that the blank can be driven to move to the upper side of the lower template 31 through the suction cup 2 92. At this time, the suction cup 2 92 is controlled to stop adsorbing the blank, that is, the blank can be placed on the lower template 31.

[0032] Multiple limit assemblies are respectively connected to multiple mold assemblies in a one-to-one correspondence. The limit assemblies include a clamping member 41, a limiter 1 42 and a limiter 2 43. The clamping member 41 is rotatably installed on the side of the top plate 33. A clamping groove 1 411 is provided on the clamping member 41. The top surface of the clamping groove 1 411 and the bottom surface of the clamping member 41 are both inclined surfaces. The limiter 1 42 is fixedly installed on the side of the upper template 32 and can be clamped in the clamping groove 1 411. The limiter 2 43 is fixedly installed on the side of the lower template 31 and is located directly below the limiter 1 42.

[0033] Specifically, there are two clamping members 41, limit members 1 42 and limit members 2 43 in the limit assembly, and they are symmetrically distributed on both sides of the mold assembly. The upper end of the clamping member 41 is rotatably installed on the side of the top plate 33, and the opening of the clamping groove 1 411 faces the outer side of the turntable 2. The top inclined surface of the clamping groove 1 411 and the bottom inclined surface of the clamping member 41 gradually tilt upward from the inner side to the outer side of the turntable 2. The limit members 1 42 and the limit members 2 43 are both columnar structures. In the initial state, the limit member 1 42 is clamped in the clamping groove 1 411.

[0034] Each clamping member 41 is provided with a control assembly for controlling the rotation of the clamping member 41, and the control assembly includes a second push rod 71, a fixed rod 72, a stopper 73 and a fourth elastic member 74. The second push rod 71 is slidably arranged at the side of the top plate 33 and abuts against the lower side of the rotation center of the clamping member 41. The second push rod 71 can slide in the width direction of the mold assembly. The fixed rod 72 is fixedly connected to the upper end of the guide rod 311. The fixed rod 72 and the clamping member 41 are respectively located on both sides of the second push rod 71. The fixed rod 72 has a protrusion 721 on one side facing the second push rod 71. The protrusion 721 is located on the lower side of the fixed rod 72, and the protrusion 721 Corresponding to the bottom end of the clamping member 41, the stopper 73 is slidably arranged at the side of the top plate 33. The stopper 73 and the top rod 71 are symmetrically distributed on both sides of the clamping member 41, that is, the stopper 73 is also stopped at the lower side of the rotation center of the clamping member 41, and the stopper 73 can slide in the width direction of the mold assembly. The elastic member 74 is connected to the stopper 73. The elastic member 74 can be a spring, and its extension direction is the same as the width direction of the mold assembly, and its two ends are fixedly connected to the stopper 73 and the top plate 33 respectively. Under the action of the top rod 71, the stopper 73 and the elastic member 74, the clamping member 41 can be in a vertical state.

[0035] A second card slot 412 is also provided on the clamping member 41. The second card slot 412 is located above the first card slot 411. The bottom surface of the second card slot 412 is a horizontal plane. An elastic member 55 is provided between the top plate 33 and the upper template 32. The elastic member 55 can be a spring, and its upper and lower ends are respectively fixedly connected to the top plate 33 and the upper template 32. A groove for accommodating the elastic member 55 is provided on the upper part of the upper template 32.

[0036] Multiple reset assemblies are respectively connected to multiple mold assemblies in a one-to-one manner, and the reset assemblies include a sliding member 61, two connecting rods 62 and an elastic member 63. The sliding member 61 is slidably installed on the turntable 2, and the ends of the two connecting rods 62 that are close to each other are rotationally connected and are both rotationally connected to the sliding member 61. The ends of the two connecting rods 62 that are away from each other are rotationally connected to the top plate 33 and the lower mold plate 31 respectively. The elastic member 63 is connected to the sliding member 61. When the top plate 33 moves downward, the sliding member 61 can be moved and the elastic member 63 can be compressed. Specifically, a vertical rod 21 corresponding to the sliding member 61 is fixedly connected to the turntable 2, and the sliding member 61 is slidably connected to the vertical rod 21, and the sliding member 61 can approach or move away from the mold assembly. The elastic member 63 can be a spring, and its two ends are respectively fixedly connected to the sliding member 61 and the vertical rod 21.

[0037] In the initial state, the limit member 42 is clamped in the clamping groove 411, the angle between the two connecting rods 62 is at the maximum state, the top plate 33 is located at the uppermost position, and the clamping member 41 is in a vertical state. When stamping, the blank is first placed on the lower template 31 through the feeding assembly, and then the driving member 51 is controlled to extend, and the top plate 33 is driven to move downward through the lower pressing plate 511. When the top plate 33 moves downward, it will drive the clamping member 41 to move downward synchronously. The top plate 33 will drive the upper template 32 to move downward through the elastic member 55. At this time, the angle between the two connecting rods 62 will become smaller, and it will push the sliding When the upper template 32 moves down to contact the blank, as the top plate 33 continues to move downward, the bottom end of the clamping member 41 is forced to rotate toward the side where the stopper 73 is located under the action of the top inclined surface of the slot 1 411, and the elastic member 4 74 and the elastic member 1 55 are compressed. The distance between the top plate 33 and the upper template 32 becomes smaller, and the limiting member 1 42 is disengaged from the slot 1 411 and enters the slot 2 412. At this time, the clamping member 41 is also restored to a vertical state under the push of the elastic member 4 74 and the stopper 73. As the top plate 33 continues to move downward, the top plate 33 applies a downward force to the upper template 32, and the upper template 32 can punch the blank on the lower template 31. In the above process, as the clamping member 41 continues to move downward, the inclined surface at the bottom of the clamping member 41 will first contact the limiting member 43. As the clamping member 41 continues to move downward, the bottom end of the clamping member 41 will be prompted to rotate toward the side where the stop member 73 is located, and the elastic member 44 74 will be compressed. After the inclined surface at the bottom of the clamping member 41 is disengaged from the limiting member 43, the clamping member 41 will rotate in the opposite direction under the action of the elastic member 44 and the stop member 73 to restore to a vertical state, and the limiting member 43 will be clamped in the clamping groove 1 411. At this time, the lower template 31 just holds the blank After the material stamping is completed, the top plate 33 and the upper template 32 are fitted together, and the compressed elastic member 55 is completely in the groove on the upper template 32. The limiting member 43 arranged in the clamping groove 411 can limit the clamping member 41, so that the upper template 32 maintains the pressing state of the workpiece. Next, the driving member 52 is controlled to drive the turntable 2 to rotate, so that the next mold assembly rotates to the feeding position, and then the above operation is repeated to continue the stamping work of the blank. At the same time, the pressing time of the upper template 32 on the workpiece in the previous mold assembly can be extended, which can effectively avoid the rebound of the workpiece when the pressed workpiece is taken out, and will not affect the pressing work of the next blank, so as to ensure the stamping efficiency.

[0038] When the second push rod 71 moves downward with the top plate 33, the second push rod 71 will pass over the protrusion 721 on the fixing rod 72 and move to the lower side of the protrusion 721. During this process, the bottom end of the clamping member 41 will temporarily rotate to a certain angle toward the side where the stopper 73 is located, and the limiting member 1 42 will be disengaged from the slot 1 411. Then, the clamping member 41 will return to the vertical state, and the limiting member 1 42 will be re-engaged in the slot 1 411. 1, specifically, when the second push rod 71 passes through the protrusion 721, the protrusion 721 will prompt the second push rod 71 to move in the direction where the stopper 73 is located, and push the clamping member 41 to rotate, so that the bottom end of the clamping member 41 rotates a certain angle toward the side where the stopper 73 is located, and the elastic member 44 74 will be compressed. When the second push rod 71 passes over the protrusion 721, the clamping member 41 will return to a vertical state under the push of the elastic member 44 74 and the stopper 73.

[0039] The reset assembly also includes a push rod 64 and a movable frame 65. The push rod 64 is slidably installed on the side of the lower template 31. The push rod 64 can move along the width direction of the mold assembly. When the limit member 43 is clamped in the clamping groove 411, the push rod 64 corresponds to the bottom end of the clamping member 41. The movable frame 65 is connected to the turntable 2 for up and down sliding. The movable frame 65 is provided with an inclined surface that fits the push rod 64. When the movable frame 65 moves downward, the inclined surface on the movable frame 65 can push the push rod 64 to move toward the bottom end of the clamping member 41.

[0040] A discharging position is provided on the base 1, and the discharging position is adjacent to the feeding position. A downwardly concave arc groove 11 is provided on the upper surface of the base 1 where the discharging position is located, and the middle part of the arc groove 11 is concave downward. A positioning rod 66 is fixedly connected to the bottom of the movable frame 65, and the positioning rod 66 is attached to the upper surface of the base 1. The arc groove 11 is located on the rotation trajectory of the positioning rod 66. When the movable frame 65 moves to the discharging position with the turntable 2, the positioning rod 66 can pass through the arc groove 11. An elastic member three 67 is also installed on the movable frame 65. The elastic member three 67 can be a spring, and its upper and lower ends are fixedly connected to the turntable 2 and the movable frame 65 respectively. When the positioning rod 66 is attached to the upper surface of the base 1, the elastic member three 67 is in a compressed state.

[0041] When the stamping is completed and the upper template 32 maintains the pressing state of the workpiece, the elastic member 2 63 is in a compressed state, the sliding member 61 is in a position away from the mold assembly, the limiting member 2 43 is clamped in the clamping groove 1 411, the limiting member 1 42 is located in the clamping groove 2 412, and the ejector rod 2 71 is located below the protrusion 721. When the turntable 2 is driven to rotate by the driving member 2 52, the bottom end of the positioning rod 66 will slide on the upper surface of the base 1. At this time, the elastic member 3 67 is in a compressed state. When the mold assembly that maintains the pressing state rotates to the discharge position, the positioning rod 66 will enter the arc The positioning rod 66 and the moving frame 65 will move downward under the elastic push of the elastic member 3 67. At this time, the inclined surface on the moving frame 65 will push the push rod 1 64 to move toward the bottom end of the clamping member 41. The push rod 1 64 will push the bottom end of the clamping member 41 to rotate toward the side where the stopper 73 is located. When the limiting member 2 43 is disengaged from the clamping slot 1 411, the sliding member 61 will move toward the direction where the mold assembly is located under the push of the elastic member 2 63. The top plate 33 can be pushed upward by the connecting rod 62. In the process of the top plate 33 moving upward, the limiting member 1 42 The stopper 42 is stopped at the bottom of the second card slot 412, so that the top plate 33 and the clamping member 41 moving upward will drive the upper template 32 to move upward. At this time, the elastic member 1 55 is still in a compressed state. When the second push rod 71 moves up to the position of the protrusion 721 with the top plate 33, the protrusion 721 will prompt the second push rod 71 to move in the direction of the stopper 73 and push the clamping member 41 to rotate, so that the bottom end of the clamping member 41 rotates a certain angle toward the side where the stopper 73 is located, the limit member 1 42 will disengage from the second card slot 412, and as the top plate 33 continues to move upward, the second push rod 71 passes over the protrusion 721, the clamping member 41 will rotate in the opposite direction and return to the vertical state under the push of the elastic member 474 and the stop member 73, and because there is no limit member 42 at the slot 412, the top plate 33 and the upper template 32 will move away from each other under the push of the elastic member 55, and because the clamping member 41 is rotated to the vertical state again, the limit member 42 will be re-locked in the slot 411, and when the limit member 42 moves from the slot 412 to the slot 411 in a short time, the upper template 32 will vibrate, which can shake off the workpiece that may be adhered to the upper template 32.

[0042] A discharging assembly is provided at the discharging position, and the discharging assembly includes a driving member 3 81 and a suction cup 1 82. The driving member 3 81 is fixedly mounted on the support frame 13. The driving member 3 81 can be a hydraulic cylinder and can be extended and retracted in the radial direction of the turntable 2. The suction cup 1 82 is fixedly mounted at the output end of the driving member 3 81, and the suction port of the suction cup 1 82 faces downward. The driving member 3 81 is controlled to be extended and retracted, so that the suction cup 1 82 can be driven to move radially along the turntable 2. When the upper template 32 in the mold assembly moves to the discharging position, it moves upward and is separated from the lower template 31. The driving member 3 81 and the driving member 5 14 are respectively controlled to make the suction cup 1 82 fit with the workpiece after stamping, and the workpiece is adsorbed by the suction cup 1 82. Then, the driving member 3 81 and the driving member 5 14 are respectively controlled to move the workpiece out of the stamping device.

[0043] The punching method according to the embodiment of the present invention is described below.

[0044] A stamping method based on the stamping device for automobile parts comprises the following steps: The turntable 2 is driven to rotate by the second driving member 52 , so that one of the mold assemblies rotates to the position where the first driving member 51 is located.

[0045] The blank to be punched is placed on the lower template 31, and the top plate 33, the clamping member 41 and the upper template 32 are driven downward by the driving member 51. When the limiting member 43 is clamped in the clamping groove 411, the upper template 32 will complete the punching of the blank, and the upper template 32 will maintain the pressing state of the workpiece.

[0046] Next, the turntable 2 is driven to rotate by the second driving member 52 to rotate the next mold assembly to the position where the first driving member 51 is located, and then the above operation is repeated to continue the stamping work of the blank.

[0047] When the stamping is completed and the die assembly that remains in the pressed state rotates to the set position, the pressed workpiece is taken out.

[0048] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A stamping device for automobile parts, comprising a base, characterized in that: It also includes a turntable, a plurality of mold assemblies, a plurality of limit assemblies, a driving member 1 and a driving member 2, wherein the turntable is rotatably mounted on the upper part of the base, a plurality of mold assemblies are arranged on the upper part of the turntable at intervals along the circumference of the turntable, the mold assembly includes a lower template, an upper template and a top plate, the lower template is fixedly connected to the turntable, the upper template is slidably arranged above the lower template, the top plate is slidably arranged above the upper template, and the plurality of limit assemblies are respectively connected to the plurality of mold assemblies one by one; The limit assembly includes a clamping member, a limit member 1 and a limit member 2. The clamping member is rotatably installed on the side of the top plate. A clamping slot 1 is provided on the clamping member. The top surface of the clamping slot 1 and the bottom surface of the clamping member are both inclined surfaces. The limit member 1 is fixedly installed on the side of the upper template and can be clamped in the clamping slot 1. The limit member 2 is fixedly installed on the side of the lower template and is located directly below the limit member 1. The driving member 1 can drive the top plate and the clamping member to move downward, so that the limit member 1 is disengaged from the clamping slot 1 and the limit member 2 is clamped in the clamping slot 1. The driving member 2 can drive the turntable to rotate.

2. The stamping device for automobile parts according to claim 1, characterized in that: The clamping member is also provided with a second clamping slot, which is located above the first clamping slot. The bottom surface of the second clamping slot is a horizontal surface. An elastic member is provided between the top plate and the upper template.

3. The stamping device for automobile parts according to claim 1, characterized in that: It also includes multiple reset assemblies, which are respectively connected to the multiple mold assemblies in a one-to-one correspondence. The reset assembly includes a sliding member, two connecting rods and an elastic member 2. The sliding member is slidably installed on the turntable. The ends of the two connecting rods that are close to each other are rotatably connected and are both connected to the sliding member. The ends of the two connecting rods that are far away from each other are respectively rotatably connected to the top plate and the lower mold plate. The elastic member 2 is connected to the sliding member. When the top plate moves downward, the sliding member can be moved and the elastic member 2 can be compressed.

4. The stamping device for automobile parts according to claim 3, characterized in that: The reset assembly also includes a push rod 1 and a moving frame. The push rod 1 is slidably installed on the side of the lower template. When the limit member 2 is clamped in the clamping groove 1, the push rod 1 corresponds to the bottom end of the clamping member. The moving frame is connected to the turntable for up and down sliding. The moving frame is provided with an inclined surface that fits with the push rod 1. When the moving frame moves downward, the inclined surface on the moving frame can push the push rod 1 to move toward the bottom end of the clamping member.

5. The stamping device for automobile parts according to claim 4, characterized in that: A discharge position is provided on the base, and a downwardly recessed arc groove is provided on the upper surface of the base where the discharge position is located. A positioning rod is fixedly connected to the bottom of the movable frame, and the positioning rod is attached to the upper surface of the base. When the movable frame moves to the discharge position with the turntable, the positioning rod can pass through the arc groove. An elastic member three is also installed on the movable frame. When the positioning rod is attached to the upper surface of the base, the elastic member three is in a compressed state.

6. The stamping device for automobile parts according to claim 1, characterized in that: A control assembly for controlling the rotation of the clamping part is provided at the mold assembly, and the control assembly includes a second push rod, a fixed rod, a stopper and a fourth elastic part. The second push rod is slidably arranged at the side of the top plate and abuts against the lower side of the rotation center of the clamping part. The fixed rod is fixedly arranged, and the fixed rod and the clamping part are respectively located on both sides of the second push rod. A protrusion is provided on the side of the fixed rod facing the second push rod. The stopper is slidably arranged at the side of the top plate, and the stopper and the second push rod are symmetrically distributed on both sides of the clamping part. The fourth elastic part is connected to the stopper.

7. The stamping device for automobile parts according to claim 5, characterized in that: A discharging assembly is provided at the discharging position, and the discharging assembly includes a driving member three and a suction cup one. The driving member three is installed on the upper part of the turntable, and the suction cup one is fixedly installed at the output end of the driving member three. The driving member three can drive the suction cup one to move radially along the turntable.

8. The stamping device for automobile parts according to claim 1, characterized in that: A feeding position is provided on the base, and a feeding assembly is provided at the feeding position. The feeding assembly includes a driving member four and a suction cup two. The driving member four is installed on the upper part of the turntable, and the suction cup two is fixedly installed at the output end of the driving member four. The driving member four can drive the suction cup two to move radially along the turntable.

9. A stamping method for a stamping device for automobile parts according to any one of claims 1 to 8, characterized in that: The following steps are involved: The turntable is driven to rotate by the second driving member, so that one of the mold assemblies is rotated to the position where the first driving member is located; The blank to be punched is placed on the lower template, and the top plate, the clamping member and the upper template are driven downward by the driving member 1. When the limiting member 2 is clamped in the clamping groove 1, the upper template completes the punching of the blank, and the upper template maintains the pressing state of the workpiece; Next, the turntable is driven to rotate by the driving member 2, so that the next mold assembly is rotated to the position where the driving member 1 is located, and then the above operation is repeated to continue the stamping work of the blank; When the stamping is completed and the die assembly that remains in the pressed state rotates to the set position, the pressed workpiece is taken out.

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