CN112222297A

CN112222297A - Multi-station stamping die for automobile stamping and welding and use method thereof

Info

Publication number: CN112222297A
Application number: CN202010868855.1A
Authority: CN
Inventors: 吴应举
Original assignee: Hefei Changqing Machinery Manufacturing Co Ltd
Current assignee: Hefei Changqing Machinery Co Ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-01-15
Anticipated expiration: 2040-08-25
Also published as: CN112222297B

Abstract

The invention relates to the technical field of automobile part processing, in particular to a multi-station stamping die for automobile stamping and welding and a using method thereof, wherein the multi-station stamping die comprises a base, a fixed shaft, an upper die holder and a lower die holder, the right end of the base is fixedly connected with a controller, the bottom end of the fixed shaft is fixedly connected with a fine adjustment device, the fine adjustment device comprises a sleeve, a ball, a limiting shaft, a first spring, a limiting seat, a guide hole and a guide pillar, the guide hole can enable the guide pillar to be gradually inserted into the inner side of the limiting seat when slight deviation occurs between the upper die holder and the lower die holder through the sleeve, the limiting seat can drive a convex die plate and the upper die holder to slightly move left and right along the sleeve through the limiting shaft, and the phenomenon that the guide pillar is inclined and damaged due to the deviation between the upper die holder and the lower die holder when the guide pillar is inserted into the inner side of, meanwhile, the upper die base and the lower die base can be aligned quickly, and the stamping quality is improved.

Description

Multi-station stamping die for automobile stamping and welding and use method thereof

Technical Field

The invention relates to the technical field of automobile part processing, in particular to a multi-station stamping die for automobile stamping and welding and a using method thereof.

Background

The stamping die is a special process equipment for processing materials (metal or nonmetal) into parts (or semi-finished products) in cold stamping, called as a cold stamping die (commonly called as a cold stamping die), stamping, namely a pressure processing method for obtaining required parts by applying pressure to the materials by using a die arranged on a press machine at room temperature to separate or plastically deform the materials.

The stamping die in the current market needs to limit the position between an upper die and a lower die through a guide pillar, so that the stamping quality is ensured, but the phenomenon of deviation between the upper die and the lower die is easy to occur in the actual operation, the phenomenon of deflection and damage of the guide pillar is easy to occur when the upper die and the lower die are combined together, and meanwhile, a common stamping die is not convenient for replacing a convex die plate and a concave die plate, so that the multi-station stamping die for automobile stamping and welding and the using method thereof are provided for the problems.

Disclosure of Invention

The invention aims to provide a multi-station stamping die for automobile stamping and welding and a using method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a multi-station stamping die for stamping and welding automobiles and a using method thereof comprise a base, a fixed shaft, an upper die holder and a lower die holder, wherein a controller is fixedly connected to the right end of the base, a second motor is fixedly connected to the inner side of the left end of the base, a second screw rod is fixedly connected to the tail end of a main shaft of the second motor and is rotatably connected with the base, a moving block is spirally connected to the outer side of the second screw rod, a guide shaft is slidably connected to the inner side of the moving block and is fixedly connected with the base, the top end of the moving block is fixedly connected with the lower die holder, reinforcing seats are fixedly connected to the left end and the right end of the lower die holder, a positioning device is fixedly connected to the top end of each reinforcing seat, a concave die plate is clamped to the inner side of the lower die holder, a fine adjustment device is fixedly connected to, the bottom end of the upper die base is clamped with a convex die plate, the inner sides of the upper die base and the lower die base are fixedly connected with a connecting device, the fine adjustment device comprises a sleeve, a ball, a limiting shaft, a first spring, a limiting seat, a guide hole and a guide pillar, the bottom end of the fixed shaft is fixedly connected with the sleeve, the inner side of the sleeve is rotatably connected with the ball, the sleeve is connected with the limiting shaft through the ball in a sliding mode, the limiting shaft is fixedly connected with the upper die base, the outer sides of the left end and the right end of the upper die base are provided with the first spring, the two ends of the first spring are fixedly connected with the upper die base and the sleeve respectively, the left end and the right end of the convex die plate are fixedly connected with the limiting seat, the inner side of.

Preferably, the lower opening of the guide hole is in a horn shape, and the top end of the guide pillar is in a conical shape.

Preferably, connecting device includes spacer pin, spacing groove, sprue, gag lever post, second spring, stopper, mount, connecting rod, third spring, removal seat and spacing rail, the inboard sliding connection in top of upper die base has the gag lever post, the inboard equal fixedly connected with second spring in both ends about the upper die base, the other end fixedly connected with gag lever post of second spring, and gag lever post and convex die board block, the inboard equal fixedly connected with sprue in both ends about the upper die base.

Preferably, the inner side of the top end of the limiting rod is provided with a limiting groove.

Preferably, the inboard fixedly connected with mount in bottom of die holder, the inboard sliding connection of mount has the connecting rod, the top fixedly connected with of connecting rod removes the seat, the outside of connecting rod is provided with the third spring, and the both ends of third spring respectively with remove seat and mount fixed connection, the inboard sliding connection of mount has the stopper, and stopper and base block.

Preferably, the left end and the right end of the movable seat are fixedly connected with limit rails, and the movable seat is connected with the limit blocks in a sliding mode through the limit rails.

Preferably, the positioning device comprises a fixed seat, a first motor, a first screw, a sliding block, a connecting shaft, a vertical rod, an electric telescopic rod, a pressing block, a protective pad and an electromagnet, the inner side of the top end of the concave template is fixedly connected with an electromagnet, the top end of the reinforcing seat is fixedly connected with a fixed seat, the inner side of the fixed seat is fixedly connected with a first motor, the tail end of a main shaft of the first motor is fixedly connected with a first screw rod, the outer side of the first screw rod is spirally connected with a sliding block, the inner side of the sliding block is connected with a connecting shaft in a sliding way, the connecting shaft is fixedly connected with the fixed seat, the top end of the sliding block is fixedly connected with a vertical rod, the top end of the vertical rod is fixedly connected with an electric telescopic rod, the other end fixedly connected with briquetting of electric telescopic handle, the bottom fixedly connected with protection of briquetting fills up, and the protection fills up and is made by the rubber pad of rubber material.

Preferably, the method comprises the following steps:

the method comprises the following steps: firstly, a plate is placed on the concave template and is limited and fixed through a positioning device;

step two: the controller controls the second motor to drive the second screw rod to rotate, then the second screw rod drives the moving block to move in the left-right direction along the guide shaft, meanwhile, the moving block drives the lower die seats on the left side and the right side to move in the horizontal direction, meanwhile, the lower die seats drive the concave die plates and the iron plates to move to the lower sides of the convex die plates, and meanwhile, a worker can fix one plate on the top end face of the other concave die plate to wait for the next use;

step three: the fixed shaft punches the plate through the fine adjustment device, the upper die base and the convex die plate;

step four: the staff can be as required through connecting device and the quick installation of convex mould board and die board dismantlement.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the stamping die, the sleeve, the ball, the limiting shaft, the first spring, the limiting seat, the guide hole and the guide pillar are arranged, when slight deviation occurs between the upper die base and the lower die base, the guide pillar can be gradually inserted into the inner side of the limiting seat through the guide hole, meanwhile, the limiting seat can drive the convex die plate and the upper die base to slightly move left and right along the sleeve through the limiting shaft, the guide pillar is prevented from being inclined and damaged due to the deviation between the upper die base and the lower die base when being inserted into the inner side of the limiting seat, meanwhile, the upper die base can be rapidly aligned with the lower die base, and the stamping quality is improved.

2. According to the invention, through the arrangement of the blocking strip, the limiting rod, the second spring, the limiting block, the connecting rod, the moving block and the limiting rail, the convex die plate and the upper die base can be quickly mounted and dismounted through the limiting rod, and the concave die plate and the lower die base can be quickly mounted and dismounted through the limiting block, so that the working efficiency of workers is improved, the workers can conveniently replace the convex die plate and the concave die plate of different types, and the parts of different types can be processed.

3. According to the invention, through the arrangement of the fixed seat, the first screw rod, the sliding block, the connecting shaft, the vertical rod, the electric telescopic rod, the pressing block, the protective pad and the electromagnet, when an iron plate is processed, the iron plate can be magnetically attracted and positioned through the electromagnet, when a plastic plate or other plates which cannot be magnetically attracted are processed, the pressing block and the protective pad can be used for compressing and limiting the plastic plate or other plates which cannot be magnetically attracted, so that the plate is prevented from being inclined in the moving process.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of an enlarged internal mounting structure of the upper die holder according to the present invention;

FIG. 3 is a schematic view of the structure of FIG. 1 at point A according to the present invention;

FIG. 4 is a schematic view of a three-dimensional mounting structure of the check rail of the present invention;

fig. 5 is a perspective view of the spacing shaft of the present invention.

In the figure: 1-fine adjustment device, 101-sleeve, 102-ball, 103-limit shaft, 104-first spring, 105-limit seat, 106-guide hole, 107-guide pillar, 2-connecting device, 201-limit pin, 202-limit groove, 203-blocking strip, 204-limit rod, 205-second spring, 206-limit block, 207-fixing frame, 208-connecting rod, 209-third spring, 210-moving seat, 211-limit rail, 3-positioning device, 301-fixing seat, 302-first motor, 303-first screw, 304-sliding block, 305-connecting shaft, 306-vertical rod, 307-electric telescopic rod, 308-pressing block, 309-protective pad, 310-electromagnet, 4-fixing shaft, 5-an upper die holder, 6-a convex die plate, 7-a reinforcing seat, 8-a concave die plate, 9-a lower die holder, 10-a moving block, 11-a base, 12-a second motor, 13-a guide shaft, 14-a second screw and 15-a controller.

Detailed Description

Example 1:

referring to fig. 1-5, the present invention provides a technical solution:

a multi-station stamping die for stamping and welding automobiles and a using method thereof comprise a base 11, a fixed shaft 4, an upper die base 5 and a lower die base 9, wherein the right end of the base 11 is fixedly connected with a controller 15, the inner side of the left end of the base 11 is fixedly connected with a second motor 12, the tail end of a main shaft of the second motor 12 is fixedly connected with a second screw 14, the second screw 14 is rotatably connected with the base 11, the outer side of the second screw 14 is spirally connected with a movable block 10, the inner side of the movable block 10 is slidably connected with a guide shaft 13, the guide shaft 13 is fixedly connected with the base 11, the top end of the movable block 10 is fixedly connected with the lower die base 9, the left end and the right end of the lower die base 9 are fixedly connected with a reinforcing base 7, the top end of the reinforcing base 7 is fixedly connected with a positioning device 3, the inner side of the lower die base 9 is clamped with a concave, the bottom block of upper die base 5 has convex die plate 6, the equal fixedly connected with connecting device 2 in inboard of upper die base 5 and die holder 9, micromatic setting 1 includes sleeve 101, ball 102, spacing axle 103, first spring 104, spacing seat 105, guiding hole 106 and guide pillar 107, the bottom fixedly connected with sleeve 101 of fixed axle 4, the inboard rotation of sleeve 101 is connected with ball 102, sleeve 101 has spacing axle 103 through ball 102 sliding connection, and spacing axle 103 and upper die base 5 fixed connection, the both ends outside is provided with first spring 104 and the both ends of first spring 104 respectively with upper die base 5 and sleeve 101 fixed connection about upper die base 5, the equal fixedly connected with spacing seat 105 in both ends about convex die plate 6, guiding hole 106 has been seted up to the inboard of spacing seat 105, strengthen the top fixedly connected with guide pillar 107 of seat 7.

The lower opening of the guide hole 106 is arranged in a horn shape, the top end of the guide post 107 is arranged in a conical shape, the guide post 107 can be conveniently inserted into the inner side of the guide hole 106, the connecting device 2 comprises a limiting pin 201, a limiting groove 202, a blocking strip 203, a limiting rod 204, a second spring 205, a limiting block 206, a fixing frame 207, a connecting rod 208, a third spring 209, a moving seat 210 and a limiting rail 211, the inner side of the top end of the upper die seat 5 is slidably connected with the limiting pin 201, the inner sides of the left and right ends of the upper die seat 5 are fixedly connected with the second spring 205, the other end of the second spring 205 is fixedly connected with the limiting rod 204, the limiting rod 204 is clamped with the convex die plate 6, the inner sides of the left and right ends of the upper die seat 5 are fixedly connected with the blocking strip 203, the inner side of the top end of the limiting rod 204 is provided with the limiting groove 202, the limiting pin 201 is, the inner side of the bottom end of the lower die holder 9 is fixedly connected with a fixed mount 207, the inner side of the fixed mount 207 is slidably connected with a connecting rod 208, the top end of the connecting rod 208 is fixedly connected with a movable seat 210, the outer side of the connecting rod 208 is provided with a third spring 209, two ends of the third spring 209 are respectively fixedly connected with the movable seat 210 and the fixed mount 207, the inner side of the fixed mount 207 is slidably connected with a limit block 206, the limit block 206 is clamped with the base 11, the left end and the right end of the movable seat 210 are fixedly connected with limit rails 211, the movable seat 210 is slidably connected with the limit block 206 through the limit rails 211, the horizontal position of the limit block 206 can be changed under the action of the movable seat 210 and the limit rails 211, the positioning device 3 comprises a fixed seat 301, a first motor 302, a first screw 303, a sliding block 304, a connecting shaft 305, a vertical rod 306, an electric telescopic rod 307, a pressing, strengthen the top fixedly connected with fixing base 301 of seat 7, the first motor 302 of inboard fixedly connected with of fixing base 301, the first screw rod 303 of the terminal fixedly connected with of main shaft of first motor 302, the outside screwed connection of first screw rod 303 has slider 304, the inboard sliding connection of slider 304 has connecting axle 305, and connecting axle 305 and fixing base 301 fixed connection, the vertical pole 306 of top fixedly connected with of slider 304, the top fixedly connected with electric telescopic handle 307 of vertical pole 306, the other end fixedly connected with briquetting 308 of electric telescopic handle 307, the bottom fixedly connected with protection of briquetting 308 fills up 309, and protection fills up 309 and is made by the rubber pad of rubber material, prevent through protection pad 309 that briquetting 308 from causing the damage to the board.

The method comprises the following steps:

the method comprises the following steps: firstly, a plate is placed on a concave template 6 and is limited and fixed through a positioning device 3;

step two: the controller 15 controls the second motor 12 to drive the second screw 14 to rotate, then the second screw 14 drives the moving block 10 to move in the left-right direction along the guide shaft 13, meanwhile, the moving block 10 drives the lower die seats 9 on the left side and the right side to move in the horizontal direction, meanwhile, the lower die seats 9 drive the concave die plates 8 and the iron plates to move to the lower sides of the convex die plates 6, and meanwhile, a worker can fix one plate on the top end face of the other concave die plate 8 to wait for the next use;

step three: the fixed shaft 4 punches the plate through the fine adjustment device 1, the upper die base 5 and the convex die plate 6;

step four: the staff can be as required through connecting device 2 and the fast installation dismantlement of convex die plate 6 and die plate 8.

The working process is as follows: before the iron plate magnetic attraction fixing device is used, firstly, an external power supply supplies power, a fixed shaft 4 is fixedly connected with an external hydraulic rod, meanwhile, the front and back positions of an upper die holder 5 and a lower die holder 9 are aligned with each other, when an iron plate is machined, a worker firstly places the iron plate on the top end surface of a concave die plate 8, then controls an electromagnet 310 to be electrified through a controller 15, so that the electromagnet 310 carries out magnetic attraction fixing on the iron plate, then controls a second motor 12 to drive a second screw 14 to rotate through the controller 15, then the second screw 14 drives a moving block 10 to move in the left and right directions along a guide shaft 13, meanwhile, the moving block 10 drives the lower die holders 9 on the left and right sides to move in the horizontal direction, meanwhile, the lower die holder 9 drives a concave die plate 8 and the iron plate to move to the lower side of the convex die plate 6, and meanwhile, the worker can fix the iron plate on the top end surface of the, waiting for the next use, then the worker drives the fixed shaft 4 to move downwards through the externally connected hydraulic rod, at the same time, the fixed shaft 4 drives the convex die plate 6 and the limiting seat 105 to move downwards through the sleeve 101, the limiting shaft 103 and the upper die holder 5, when the convex die plate 6 and the concave die plate 8 slightly incline left and right, the guide hole 106 on the inner side of the limiting seat 105 also slightly inclines with the guide post 107, the guide hole 106 plays a role of guiding the limiting seat 105 and the guide post 107 in the process that the limiting seat 105 is gradually clamped with the guide post 107, so that the limiting seat 105 deviates in the left and right direction, the smooth clamping between the limiting seat 105 and the guide post 107 is ensured, meanwhile, the limiting seat 105 also drives the limiting shaft 103 to move left and right along the balls 102 on the inner side of the sleeve 101 through the convex die plate 6 and the upper die holder 5, thereby the convex die plate 6 and the concave die plate 8 are completely aligned, and, the punching of the iron plate is not affected, the convex template 6 and the concave template 8 are separated after punching, meanwhile, a worker energizes the second motor 12 to move the concave template 8 at the lower side of the convex template 6 to the right side, the concave template 8 with the iron plate at the left side is at the lower side of the convex template 6, then the iron plate is piled according to the steps for punching, the worker takes out the iron plate after punching and puts in a new iron plate in the punching process, the punching efficiency can be improved by alternately using the left concave template 8 and the right concave template 8, when the convex template 6 and the concave template 8 need to be replaced, the worker firstly takes the limiting pin 201 from the inner side of the upper die base 5, then presses the limiting rod 204 at the left side to enable the limiting rod 204 to move towards the direction close to the vertical central line of the convex template 6, and inserts the limiting pin 201 into the inner side of the limiting groove 202, the limiting rod 204 is prevented from being clamped with the male die plate 6 again under the action of the second spring 205, then one person drags the male die plate 6 by hand, the limiting rod 204 on the right side is not clamped with the male die plate 6 by another worker in the same way, then the male die plate 6 can be taken down from the outer side of the upper die base 5, then other types of male die plates 6 can be replaced, when the female die plate 8 is replaced, the worker pulls the connecting rod 208 downwards by hand, the connecting rod 208 enables the limiting blocks 206 on the left side and the right side to move towards the direction close to the vertical central line of the female die plate 8 through the limiting rails 211 until the limiting blocks 206 move out from the inner side of the base 11, then the worker can take the female die plate 8 and the base 11 out from the inner side of the lower die base 9, and the female die plate 8 can be reinstalled on the inner side of the lower die.

The same parts of embodiment 2 and embodiment 1 are not repeated, except that when a plastic plate or other plate which cannot be magnetically attracted needs to be processed, a worker places the plate on the cavity plate 8, then the worker controls the first motor 302 to be energized through the controller 15, then the first motor 302 drives the first screw 303 to rotate, meanwhile, the first screw 303 drives the slider 304 to move up along the connecting shaft 305, the slider 304 drives the pressing block 308 and the protection pad 309 to move up through the vertical rod 306 and the electric telescopic rod 307 until the horizontal line of the bottom end face of the protection pad 309 is above the horizontal line of the top end face of the plate, then the worker drives the pressing block 308 and the protection pad 309 to move in a direction close to the vertical center line of the plate through the electric telescopic rod 307 until the protection pad 309 is above the plate, then the worker controls the first motor 302 to rotate reversely through the controller 15, the pressing block 308 and the protection pad 309 are moved downward, and the pressing and positioning of the plate material are realized through the pressing block 308 and the protection pad 309.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims

1. The utility model provides an automobile punching press is multistation stamping die for welding and application method thereof, includes base (11), fixed axle (4), upper die base (5) and die holder (9), its characterized in that: the right end of the base (11) is fixedly connected with a controller (15), the inner side of the left end of the base (11) is fixedly connected with a second motor (12), the tail end of a main shaft of the second motor (12) is fixedly connected with a second screw (14), the second screw (14) is rotatably connected with the base (11), the outer side of the second screw (14) is spirally connected with a movable block (10), the inner side of the movable block (10) is slidably connected with a guide shaft (13), the guide shaft (13) is fixedly connected with the base (11), the top end of the movable block (10) is fixedly connected with a lower die holder (9), the left end and the right end of the lower die holder (9) are fixedly connected with reinforcing seats (7), the top end of each reinforcing seat (7) is fixedly connected with a positioning device (3), the inner side of the lower die holder (9) is clamped with a concave die plate (8), and the bottom end of the fixed shaft (4) is fixedly, one end of the fine adjustment device (1) is fixedly connected with an upper die holder (5), a convex die plate (6) is clamped at the bottom end of the upper die holder (5), the inner sides of the upper die holder (5) and the lower die holder (9) are fixedly connected with a connecting device (2), the fine adjustment device (1) comprises a sleeve (101), a ball (102), a limiting shaft (103), a first spring (104), a limiting seat (105), a guide hole (106) and a guide pillar (107), the bottom end of the fixed shaft (4) is fixedly connected with a sleeve (101), the inner side of the sleeve (101) is rotatably connected with the ball (102), the sleeve (101) is slidably connected with the limiting shaft (103) through the ball (102), the limiting shaft (103) is fixedly connected with the upper die holder (5), the outer sides of the left end and the right end of the upper die holder (5) are provided with the first spring (104), and the two ends of the first spring (104) are respectively and fixedly connected with the upper die holder (, the left end and the right end of the convex die plate (6) are fixedly connected with limiting seats (105), guide holes (106) are formed in the inner sides of the limiting seats (105), and guide columns (107) are fixedly connected to the top ends of the reinforcing seats (7).

2. The multi-station stamping die for automobile stamping and welding according to claim 1, characterized in that: the lower opening of the guide hole (106) is arranged in a horn shape, and the top end of the guide post (107) is arranged in a conical shape.

3. The multi-station stamping die for automobile stamping and welding according to claim 1, characterized in that: connecting device (2) include spacer pin (201), spacing groove (202), putty (203), gag lever post (204), second spring (205), stopper (206), mount (207), connecting rod (208), third spring (209), removal seat (210) and spacing rail (211), the inboard sliding connection in top of upper die base (5) has gag pin (201), the inboard equal fixedly connected with second spring (205) in both ends about upper die base (5), other end fixedly connected with gag lever post (204) of second spring (205), and gag lever post (204) and convex die plate (6) block, the inboard equal fixedly connected with putty (203) in both ends about upper die base (5).

4. The multi-station stamping die for automobile stamping and welding according to claim 3, wherein: the inner side of the top end of the limiting rod (204) is provided with a limiting groove (202).

5. The multi-station stamping die for automobile stamping and welding according to claim 1, characterized in that: the utility model discloses a die holder, including lower die holder (9), inboard sliding connection has connecting rod (208) of bottom inboard fixedly connected with mount (207) of lower bolster (9), the top fixedly connected with of connecting rod (208) removes seat (210), the outside of connecting rod (208) is provided with third spring (209), and the both ends of third spring (209) respectively with remove seat (210) and mount (207) fixed connection, the inboard sliding connection of mount (207) has stopper (206), and stopper (206) and base (11) block.

6. The multi-station stamping die for automobile stamping and welding according to claim 5, wherein: the left end and the right end of the movable seat (210) are fixedly connected with limit rails (211), and the movable seat (210) is connected with the limit blocks (206) in a sliding mode through the limit rails (211).

7. The multi-station stamping die for automobile stamping and welding according to claim 1, characterized in that: the positioning device (3) comprises a fixed seat (301), a first motor (302), a first screw rod (303), a sliding block (304), a connecting shaft (305), a vertical rod (306), an electric telescopic rod (307), a pressing block (308), a protection pad (309) and an electromagnet (310), wherein the electromagnet (310) is fixedly connected to the inner side of the top end of the concave template (8), the fixed seat (301) is fixedly connected to the top end of the reinforcing seat (7), the first motor (302) is fixedly connected to the inner side of the fixed seat (301), the first screw rod (303) is fixedly connected to the tail end of a main shaft of the first motor (302), the sliding block (304) is spirally connected to the outer side of the first screw rod (303), the connecting shaft (305) is slidably connected to the inner side of the sliding block (304), the connecting shaft (305) is fixedly connected to the fixed seat (301), the vertical rod (306) is fixedly, the top end of the vertical rod (306) is fixedly connected with an electric telescopic rod (307), the other end of the electric telescopic rod (307) is fixedly connected with a pressing block (308), the bottom end of the pressing block (308) is fixedly connected with a protective pad (309), and the protective pad (309) is made of rubber pads made of rubber materials.

8. The use method of the multi-station stamping die for automobile stamping and welding according to claim 1 is characterized in that: the method comprises the following steps:

the method comprises the following steps: firstly, a plate is placed on the concave template (6) and is limited and fixed through a positioning device (3);

step two: the controller (15) controls the second motor (12) to drive the second screw rod (14) to rotate, then the second screw rod (14) drives the moving block (10) to move in the left-right direction along the guide shaft (13), meanwhile, the moving block (10) drives the lower die seats (9) on the left side and the right side to move in the horizontal direction, meanwhile, the lower die seats (9) drive the concave die plate (8) and the iron plate to move to the lower side of the convex die plate (6), and meanwhile, a worker can fix one plate on the top end face of the other concave die plate (8) to wait for next use;

step three: the fixed shaft (4) punches the plate through the fine adjustment device (1), the upper die base (5) and the convex die plate (6);

step four: the staff can be as required through connecting device (2) and male die plate (6) and die plate (8) quick installation dismantlement.