Flexible quick-change automobile assembly die stamping automation production system

Abstract

The flexible quick-change automobile arrangement mold stamping automated production system of the present invention comprises an automatic stamping machine, an arrangement mold, a feeder, an output machine, and an industrial robot. The arrangement mold is arranged in the automatic stamping machine, the feeder is connected to the front end of the automatic stamping machine, the output machine is connected to the rear end of the automatic stamping machine, the industrial robot is arranged on one side of the automatic stamping machine, and the manipulator of the industrial robot can reach the feeder to grab the sheet material and put it into the arrangement mold. The feeder comprises a material pile switching and sheet material separation mechanism, a sheet material grabbing mechanism, a sheet material centering and conveying mechanism. The present invention has low cost, wide application range, and is conducive to promotion and application in small and medium-sized enterprises.

Description

Technical Field

[0001] The invention relates to the field of mechanical manufacturing, and in particular to a flexible quick-change automobile arrangement die stamping automatic production system. Background Art

[0002] There are many parts in automobile production that need to be produced by stamping technology, and large manufacturers basically use automated production equipment for stamping production. At present, most of the underdeveloped industrial regions such as the central and western regions do not have advanced stamping automation equipment, and need to purchase from Shanghai, Guangdong, Chongqing and other places. Due to the high equipment prices, slow after-sales response speed, and inadequate after-sales technical services, only some large enterprises can use stamping automation equipment. In fact, most stamping parts are produced by small and medium-sized enterprises. Due to the large one-time investment in stamping automation products, problems that arise during use cannot be solved in a timely manner, which restricts the promotion and application of stamping automation products in small and medium-sized enterprises. It is urgent to invent a flexible quick-change automobile arrangement mold stamping automation production system that can be promoted and applied in small and medium-sized enterprises during the automobile manufacturing process. Summary of the invention

[0003] The purpose of the present invention is to provide a flexible quick-change automobile arrangement die stamping automation production system with low cost, wide application range and conducive to promotion and application in small and medium-sized enterprises in view of the defects of the above-mentioned prior art.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a flexible quick-change automobile arrangement mold stamping automated production system, including an automatic stamping machine, an arrangement mold, a feeder, an output machine, and an industrial robot. The arrangement mold is arranged in the automatic stamping machine, the feeder is connected to the front end of the automatic stamping machine, the output machine is connected to the rear end of the automatic stamping machine, the industrial robot is arranged on one side of the automatic stamping machine, and the manipulator of the industrial robot can reach the feeder to grab the sheet material and put it into the arrangement mold. The feeder includes a material pile switching and sheet material separation mechanism , sheet material grabbing mechanism, sheet material centering and conveying mechanism, material pile switching and sheet material separation mechanism include base plate mounting frame, material cart 1, material cart 2, material pile positioner, magnetic spreader, material cart driving cylinder, the base plate mounting frame is fixedly mounted on the floor, two parallel tracks are arranged on the base plate mounting frame, the material cart driving cylinder is arranged between the two tracks of the base plate mounting frame, the material cart driving cylinder can drive material cart 1 and material cart 2 to slide on the two tracks on the base plate mounting frame, material cart 1 and material cart 2 respectively include a material cart bottom plate, a material cart bottom plate bottom The material pile locator is connected to the upper surface of the bottom plate of the material cart through the locating pin holes and the threaded holes. The magnetic spreader is also arranged on the upper surface of the bottom plate of the material cart through the locating pin holes and the threaded holes and is located on one side edge of the material pile. The sheet material grabbing mechanism includes a column frame, a beam frame, and an automatic grabbing device. The column frames are respectively arranged on the outer edges of both sides near the middle of the bottom plate mounting frame. The beam frame is connected to the top of the column frame. The automatic grabbing device is arranged on the beam frame and can automatically move downward to the top of the material cart to grab the sheet material to be stamped and put it on the centering table. The sheet material centering and conveying mechanism includes a conveying aluminum alloy frame, a servo motor, a transmission device, and a centering table. The conveying aluminum alloy frame is connected between the column frames through a fixing device. The servo motor is arranged on the lower side of the front end of the conveying aluminum alloy frame. The transmission device is connected to the servo motor and is positioned on the column frame and the conveying aluminum alloy frame. The centering table is arranged on the conveying aluminum alloy frame and can be driven by the transmission device to move back and forth relative to the conveying aluminum alloy frame to complete the feeding.

[0005] A further technical solution of the present invention is: the automatic grasping device includes an end picker, an end picker guide column, a material picking cylinder, and a cylinder mounting plate, the cylinder mounting plate is connected to the crossbeam frame, the material picking cylinder is mounted on the cylinder mounting plate, the end picker is connected to the lower end of the piston rod of the material picking cylinder, one side of the end picker is connected to the end picker guide column, the cylinder mounting plate is provided with a guide hole that cooperates with the end picker guide column, and one side of the suction cup of the end picker is provided with a vacuum generator and a material picking sensor.

[0006] A further technical solution of the present invention is: the centering platform includes a centering platform substrate and a centering device arranged on the centering platform substrate, the centering platform substrate is provided with a plurality of groups of standard positioning pin holes and threaded holes, the centering device includes a sheet X-direction positioning block, a sheet Y-direction positioning block, a sheet X-direction cylinder centering assembly, and a sheet Y-direction cylinder centering assembly. The sheet X-direction positioning block is positioned on one side of the upper surface of the centering platform substrate in the X direction by a fixing device, the sheet X-direction cylinder centering assembly is arranged on the other side of the upper surface of the centering platform substrate in the X direction and can push the sheet to be punched close to the sheet X-direction positioning block in the X direction, the sheet Y-direction positioning block is positioned on one side of the upper surface of the centering platform substrate in the Y direction by a fixing device, the sheet Y-direction cylinder centering assembly is arranged on the other side of the upper surface of the centering platform substrate in the Y direction and can push the sheet to be punched close to the sheet Y-direction positioning block in the Y direction.

[0007] A further technical solution of the present invention is: a double material detection sensor is provided on the upper side of the centering platform substrate, a double material detection sensor bracket extending backward and downward is connected to the rear end of the beam frame, and the double material detection sensor is connected to the lower end of the double material detection sensor bracket.

[0008] A further technical solution of the present invention is: one of the columns of the column frame close to the front end of the conveying aluminum alloy frame is connected to a motor mounting bracket, the servo motor is installed on one side of the motor mounting bracket, the transmission device includes a reducer, a driving synchronous wheel, a driving synchronous belt, a driving active wheel, a conveying active wheel, a coupling, a conveying synchronous belt, and a conveying synchronous wheel, the reducer is connected to the output end of the servo motor, the driving synchronous wheel is connected to the output end of the reducer, the driving active wheel is arranged on the upper side of the driving synchronous wheel, the driving synchronous belt is connected between the driving synchronous wheel and the driving active wheel, and the driving active wheel is connected to the conveying active wheel, the front ends of the conveying aluminum alloy frame are respectively connected to the conveying active wheels, and the conveying active wheels on both sides of the front end of the conveying aluminum alloy frame are connected through a coupling and rotate synchronously, the rear ends of the conveying aluminum alloy frame are respectively connected to the conveying synchronous wheels, the conveying synchronous belt is wrapped around the conveying active wheel and the conveying synchronous wheel at corresponding positions, the conveying aluminum alloy frame is provided with linear slide rails on the inner sides of the two side edges in the front and rear directions, the centering platform is positioned on the two conveying synchronous belts on the conveying aluminum alloy frame through a positioning device, and the bottom sides of the centering platform substrate are respectively connected to slider mechanisms that cooperate with the two linear slide rails.

[0009] A further technical solution of the present invention is: a material receiving position sensor, a zero position sensor and a material feeding position sensor are sequentially connected to the outer edge of one of the side edges in the front-to-back direction of the conveying aluminum alloy frame, the material receiving position sensor is connected to the outer edge of the front end of one of the side edges in the front-to-back direction of the conveying aluminum alloy frame, the zero position sensor is connected to the outer edge of the middle position of one of the side edges in the front-to-back direction of the conveying aluminum alloy frame, and the material feeding position sensor is connected to the outer edge of the rear end of one of the side edges in the front-to-back direction of the conveying aluminum alloy frame.

[0010] A further technical solution of the present invention is: the feeder also includes a control system, the control system includes a PLC control system, a vacuum control system, a touch screen, and an operating table. The PLC control system is connected to the servo motor, the double material detection sensor, the material receiving level sensor, the zero position sensor and the feeding level sensor through the control circuit, the vacuum control system is connected to the vacuum generator through the circuit, the touch screen is arranged on the operating table, and the PLC control system and the vacuum control system are respectively arranged in the control cabinet on the lower side of the operating table.

[0011] The flexible quick-change automobile arrangement die stamping automated production system of the present invention has the following beneficial effects:

[0012] 1. The feeder of the present invention adopts a servo motor to provide power, and transmits power to the conveying synchronous wheel and the conveying synchronous belt smoothly through the driving synchronous wheel, the driving synchronous belt, the driving driving wheel, the conveying driving wheel, the coupling, etc., and drives the centering platform to feed the sheet to be stamped into the stamping equipment through the action of the conveying synchronous belt and the conveying synchronous wheel. The driving mechanism occupies a small space and can avoid the movement range of the slider of the stamping equipment, which provides the possibility for the industrial robot to pick up the material in the machine. At the same time, the running speed is fast and the operation is stable, which improves the production efficiency. The feeding position can be adjusted by the servo motor, which improves the flexibility of the feeder. In addition, the synchronous wheel and the synchronous belt are low in cost and relatively simple in maintenance, which greatly reduces the development cost of the equipment.

[0013] 2. The bottom plates of the first and second trolleys of the feeder of the present invention are provided with multiple groups of standard positioning pin holes and threaded holes. When producing different parts, the positions of the magnetic spreader and the stockpile locator can be quickly switched to achieve flexible quick-change production, reduce production preparation time, and improve the use efficiency of the equipment;

[0014] 3. The feeder of the present invention is designed with multiple groups of standard positioning pin holes and threaded holes on the centering table substrate. When producing different parts, the positions of the sheet X / Y positioning blocks and the sheet X / Y cylinder centering components can be quickly switched to achieve flexible quick-change production, reduce production preparation time, and improve the use efficiency of the equipment;

[0015] 4. The feeder of the present invention eliminates the commonly used hydraulic mechanism for lifting the pile of materials. The end picker controls the material picking position through the cylinder, and picks up materials one by one from top to bottom within the stroke range of the cylinder, thereby reducing the development cost and maintenance cost of the equipment.

[0016] The flexible quick-change automobile arrangement die stamping automated production system of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the flexible quick-change automobile arrangement die stamping automated production system of the present invention;

[0018] Figure 2 is Figure 1 The schematic diagram of the structure after the automatic punching machine is removed;

[0019] Figure 3 It is a schematic diagram of the feeder hiding the sheet material grabbing mechanism and the sheet material centering and conveying mechanism behind the cover (the centering table is at zero position);

[0020] Figure 4 yes Figure 3 A partial schematic diagram of

[0021] Figure 5 This is a structural diagram of the centering platform of the feeder located at the material receiving position;

[0022] Figure 6 This is a structural diagram of the centering platform of the feeder located at the feeding position;

[0023] Description of the attached figures: A-automatic punching machine, B-feeder, C-industrial robot, D-arrangement mold, E-output machine, F-loading end picker, 1-bottom plate mounting frame, 2-cart driving cylinder, 3-column frame, 4-driving synchronous wheel, 5-driving synchronous belt, 6-driving driving wheel, 7-servo motor, 8-transport driving wheel, 9-cart 1, 10-coupling, 11-material picking sensor, 12-vacuum generator, 13-cart 2, 14-cart bottom plate, 15-magnetic spreader, 16-sheet material to be processed, 17-pile locator, 18-suction cup, 19-end picker, 20-beam frame, 21-end picker Guide column, 22-feeding cylinder, 23-sheet X-axis cylinder centering assembly, 24-centering platform base plate, 25-linear slide rail, 26-double material detection sensor bracket, 27-double material detection sensor, 28-sheet Y-axis positioning block, 29-sheet X-axis positioning block, 30-conveying synchronous wheel, 31-feeding position sensor, 32-conveying synchronous belt, 33-conveying aluminum alloy frame, 34-sheet Y-axis cylinder centering assembly, 35-zero position sensor, 36-cylinder mounting plate, 37-material receiving position sensor, 38-track, 39-operating table, 40-touch screen, 41-control cabinet, 42-reducer, 43-motor mounting bracket. DETAILED DESCRIPTION

[0024] like Figure 1 , Figure 2As shown, the present invention is a flexible quick-change automobile arrangement mold stamping automated production system, including an automatic stamping machine, an arrangement mold, a feeder, an output machine, and an industrial robot. The arrangement mold is arranged in the automatic stamping machine. The arrangement mold is a mold for multiple processes of the same stamping part. It can be designed as a set of molds with multiple stations (that is, a shared mold base), or it can be designed as multiple sets of independent molds. The arrangement mold is also called a "multi-station mold." The feeder is connected to the front end of the automatic stamping machine, the output machine is connected to the rear end of the automatic stamping machine, the industrial robot is arranged on one side of the automatic stamping machine, and the manipulator of the industrial robot can reach the feeder to grab the sheet material and put it into the arrangement mold.

[0025] Please also see Figures 3 to 6 As shown, the feeder material pile switching and sheet material separation mechanism includes a base plate mounting frame, a material cart one, a material cart two, a material pile positioner, a magnetic spreader, and a material cart driving cylinder. The base plate mounting frame is fixedly mounted on the floor, and two parallel tracks are provided on the base plate mounting frame. The material cart driving cylinder is arranged between the two tracks of the base plate mounting frame. The material cart driving cylinder can drive the material cart one and the material cart two to slide on the two tracks on the base plate mounting frame. The material cart one and the material cart two respectively include a material cart base plate, and a slider that can slide relative to the track is provided at the bottom of the material cart base plate. In this embodiment, two material cart driving cylinders are provided, and the piston rod of one material cart driving cylinder is connected to the bottom of the material cart one to push the material cart one to slide on the track. The piston rod of the other material cart driving cylinder is connected to the bottom of the material cart two to push the material cart two to slide on the track. The bottom plate of the material cart is provided with multiple sets of standard positioning pin holes and threaded holes. The stock pile locator is connected to the upper surface of the bottom plate of the material cart through the positioning pin holes and threaded holes. The stock pile locator is used to locate the sheets to be processed stacked on the bottom plate of the material cart. The magnetic spreader is also set on the upper surface of the bottom plate of the material cart through the positioning pin holes and threaded holes and is located on one side edge of the stock pile. The magnetic spreader is set so that the sheets to be processed stacked together can be quickly separated when they are grabbed. When processing different parts, the installation position of the stock pile locator and the magnetic spreader can be adjusted according to the structure and size of the parts to be processed.

[0026] The sheet material grabbing mechanism includes a column frame, a beam frame, and an automatic grabbing device. The column frames are respectively arranged at the outer edges of both sides near the middle of the bottom plate mounting frame, wherein two columns are arranged at a certain distance on each outer edge of the middle of the bottom plate mounting frame, and the positions of the columns on both sides of the bottom plate mounting frame correspond to each other, and four columns form a column frame. The distance of the column frame protruding from both ends of the bottom plate mounting frame is approximately the length of the first or second material cart, so that the first or second material cart can complete the loading on the track protruding from the bottom plate mounting frame. The beam frame is connected to the top of the column frame. The automatic grabbing device is arranged on the beam frame and can automatically move downward to the top of the material cart to grab the sheet material to be stamped and place it on the centering table. The automatic gripping device includes an end picker, an end picker guide column, a material picking cylinder, and a cylinder mounting plate. The cylinder mounting plate is connected to the crossbeam frame, the material picking cylinder is mounted on the cylinder mounting plate, the end picker is connected to the lower end of the piston rod of the material picking cylinder, one side of the end picker is connected to the end picker guide column, the cylinder mounting plate is provided with a guide hole that cooperates with the end picker guide column, and one side of the suction cup of the end picker is provided with a vacuum generator and a material picking sensor.

[0027] The sheet centering and conveying mechanism includes a conveying aluminum alloy frame, a servo motor, a transmission device, and a centering platform. The conveying aluminum alloy frame is connected between the column frames through a fixing device, the servo motor is arranged at the lower side of the front end of the conveying aluminum alloy frame, the transmission device is connected to the servo motor and positioned on the column frame and the conveying aluminum alloy frame, and the centering platform is arranged on the conveying aluminum alloy frame and can be driven by the transmission device to move forward and backward relative to the conveying aluminum alloy frame to complete the feeding.

[0028] The centering platform includes a centering platform substrate and a centering device arranged on the centering platform substrate. The centering platform substrate is provided with a plurality of groups of standard positioning pin holes and threaded holes. The centering device includes a sheet X-direction positioning block, a sheet Y-direction positioning block, a sheet X-direction cylinder centering assembly, and a sheet Y-direction cylinder centering assembly. The sheet X-direction positioning block is positioned on one side of the upper surface of the centering platform substrate through a fixing device. The sheet X-direction cylinder centering assembly is arranged on the other side of the upper surface of the centering platform substrate in the X direction and can push the sheet to be punched close to the sheet X-direction positioning block in the X direction. The sheet Y-direction positioning block is positioned on one side of the upper surface of the centering platform substrate in the Y direction through a fixing device. The sheet Y-direction cylinder centering assembly is arranged on the other side of the upper surface of the centering platform substrate in the Y direction and can push the sheet to be punched close to the sheet Y-direction positioning block in the Y direction. There are multiple sets of standard positioning pin holes and threaded holes on the centering table base plate. When processing different parts, the positions of the sheet X-axis positioning block, sheet Y-axis positioning block, sheet X-axis cylinder centering assembly, and sheet Y-axis cylinder centering assembly on the centering table base plate can be adjusted according to the shape of the parts to improve the versatility of the feeder. A double material detection sensor is provided on the upper side of the centering table base plate, and a double material detection sensor bracket extending backward and downward is connected to the rear end of the crossbeam frame. The double material detection sensor is connected to the lower end of the double material detection sensor bracket.

[0029] One of the columns on the column frame near the front end of the conveying aluminum alloy frame is connected to a motor mounting bracket, and the servo motor is mounted on one side of the motor mounting bracket. The transmission device includes a reducer, a driving synchronous wheel, a driving synchronous belt, a driving driving wheel, a conveying driving wheel, a coupling, a conveying synchronous belt, and a conveying synchronous wheel. The reducer is connected to the output end of the servo motor, the driving synchronous wheel is connected to the output end of the reducer, the driving driving wheel is arranged on the upper side of the driving synchronous wheel, the driving synchronous belt is connected between the driving synchronous wheel and the driving driving wheel, the driving driving wheel is then connected to the conveying driving wheel, and the driving driving wheel and the conveying driving wheel are connected to both ends of the same rotating shaft. Conveying driving wheels are respectively connected to both sides of the front end of the conveying aluminum alloy frame, and the conveying driving wheels on both sides of the front end of the conveying aluminum alloy frame are connected through a coupling and rotate synchronously, and conveying synchronous wheels are respectively connected to both sides of the rear end of the conveying aluminum alloy frame, and the conveying synchronous belt is wrapped around the conveying driving wheel and the conveying synchronous wheel at corresponding positions. The conveying aluminum alloy frame is provided with linear slide rails on the inner sides of the two side edges in the front and rear directions, and the centering platform is positioned on the two conveying synchronous belts on the conveying aluminum alloy frame through a positioning device, and slider mechanisms that cooperate with the two linear slide rails are respectively connected to both sides of the bottom of the centering platform substrate.

[0030] The outer edge of one of the side edges in the front-to-back direction of the conveying aluminum alloy frame is connected with a receiving position sensor, a zero position sensor and a feeding position sensor in sequence. The receiving position sensor is connected to the outer edge of one of the side edges in the front-to-back direction of the conveying aluminum alloy frame near the front end, the zero position sensor is connected to the outer edge of one of the side edges in the front-to-back direction of the conveying aluminum alloy frame near the middle position, and the feeding position sensor is connected to the outer edge of the rear end of one of the side edges in the front-to-back direction of the conveying aluminum alloy frame.

[0031] The control system of the feeder includes a PLC control system, a vacuum control system, a touch screen, and an operating table. The PLC control system is connected to the servo motor, the double material detection sensor, the receiving material level sensor, the zero position sensor, and the feeding level sensor through the control circuit. The vacuum control system is connected to the vacuum generator through the circuit. The touch screen is arranged on the operating table. The PLC control system and the vacuum control system are respectively arranged in the control cabinet on the lower side of the operating table.

[0032] During operation, the inside of the pile locator of the feeder's trolley 1 or trolley 2 is filled with sheets to be stamped. The trolley filled with sheets enters the middle position of the track under the push-pull action of the trolley driving cylinder, that is, it is located opposite to the centering table. The PLC control system controls the material-picking cylinder to work, and the end picker goes down to pick up the materials and return. Under the action of the servo motor, synchronous wheel, and synchronous belt, the centering table slides into the material receiving position on the linear slide rail and slider mechanism. The material receiving position sensor sends a sense, and the PLC control system controls the servo motor to stop working. The end picker puts the sucked sheet into the upper surface of the centering table substrate of the centering table. At this time, the sheet is located between the sheet X-direction positioning block, the sheet Y-direction positioning block, the sheet X-direction cylinder centering component, and the sheet Y-direction cylinder centering component. Then the PLC control system controls the sheet X-direction cylinder centering component and the sheet Y-direction cylinder centering component to push the sheet to the correct position, even if the sheet is against the sheet X-direction positioning block and the sheet Y-direction positioning block respectively. The PLC control system controls the servo motor to work. Under the action of the synchronous wheel and synchronous belt, the centering table returns to the zero position, the zero position sensor sends a sense, and the PLC control system controls the servo motor to stop working. The PLC control system controls the double material detection sensor to detect the double material of the sheet material, that is, to detect whether there are two pieces stacked together. If there is no double material after the double material detection is completed, the PLC control system controls the servo motor to work. Under the action of the synchronous wheel and synchronous belt, the centering table moves back to the feeding position, the feeding position sensor sends a sense, and the PLC control system controls the servo motor to stop working. The loading end picker connected to the manipulator of the industrial robot extends to the centering table, sucks the sheet material on the centering table and feeds it into the arrangement mold under the automatic stamping machine, and the automatic stamping machine stamps the sheet material. The PLC control system controls the servo motor to work. Under the action of the synchronous wheel and synchronous belt, the centering table returns to the zero position from the feeding position, the zero position sensor sends a sense, the PLC control system controls the servo motor to stop working, and the feeder completes one feeding work.

[0033] The above embodiments are only preferred embodiments of the present invention. The structure of the present invention is not limited to the forms listed in the above embodiments. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible quick-change automobile arrangement die stamping automated production system, comprising an automatic stamping machine (A), an arrangement die (D), a feeder (B), an output machine (E), and an industrial robot (C), wherein the arrangement die (D) is arranged in the automatic stamping machine (A), the feeder (B) is connected to the front end of the automatic stamping machine (A), the output machine (E) is connected to the rear end of the automatic stamping machine (A), the industrial robot (C) is arranged on one side of the automatic stamping machine (A), and the manipulator of the industrial robot (C) can reach the feeder (B) to grab the sheet material and put it into the arrangement die (D), characterized in that: The feeder (B) comprises a material pile switching and sheet material separation mechanism, a sheet material grabbing mechanism, a sheet material centering and conveying mechanism, the material pile switching and sheet material separation mechanism comprises a base plate mounting frame (1), a material cart one (9), a material cart two (13), a material pile positioner (17), a magnetic spreader (15), and a material cart driving cylinder (2), the base plate mounting frame (1) is fixedly mounted on the floor, two parallel rails (38) are provided on the base plate mounting frame (1), and the material cart driving cylinder (2) is arranged on the two rails of the base plate mounting frame (1). (38), the material cart driving cylinder (2) can drive the material cart one (9) and the material cart two (13) to slide on the two tracks (38) on the bottom plate mounting frame (1), the material cart one (9) and the material cart two (13) respectively include a material cart bottom plate (14), the bottom of the material cart bottom plate (14) is provided with a slider that can slide relative to the track (38), the material cart bottom plate (14) is provided with a plurality of groups of standard positioning pin holes and threaded holes, the material pile locator (17) is connected to the upper surface of the material cart bottom plate (14) through the positioning pin holes and the threaded holes, and the magnetic spreader (1 5) is also arranged on the upper surface of the material cart bottom plate (14) and at one side edge of the material pile through positioning pin holes and threaded holes. The sheet material grabbing mechanism includes a column frame (3), a crossbeam frame (20), and an automatic grabbing device. The column frame (3) is respectively arranged at the outer edges of both sides near the middle of the bottom plate mounting frame (1). The crossbeam frame (20) is connected to the top of the column frame (3). The automatic grabbing device is arranged on the crossbeam frame (20) and can automatically move downward to the top of the material cart to grab the sheet material to be stamped and place it on the centering table. The sheet material is centered and conveyed. The mechanism comprises a conveying aluminum alloy frame (33), a servo motor (7), a transmission device, and a centering platform. The conveying aluminum alloy frame (33) is connected between the column frames (3) via a fixing device. The servo motor (7) is arranged at the lower side of the front end of the conveying aluminum alloy frame (33). The transmission device is connected to the servo motor (7) and is positioned on the column frame (3) and the conveying aluminum alloy frame (33). The centering platform is arranged on the conveying aluminum alloy frame (33) and can be driven by the transmission device to move forward and backward relative to the conveying aluminum alloy frame (33) to complete material feeding.

2. The flexible quick-change automobile arrangement die stamping automated production system according to claim 1, characterized in that: The automatic gripping device comprises an end picker (19), an end picker guide column (21), a material picking cylinder (22), and a cylinder mounting plate (36); the cylinder mounting plate (36) is connected to a crossbeam frame (20); the material picking cylinder (22) is mounted on the cylinder mounting plate (36); the end picker (19) is connected to the lower end of a piston rod of the material picking cylinder (22); one side of the end picker (19) is connected to the end picker guide column (21); the cylinder mounting plate (36) is provided with a guide hole that cooperates with the end picker guide column (21); and one side of the end picker suction cup (18) is provided with a vacuum generator (12) and a material picking sensor (11).

3. The flexible quick-change automobile arrangement die stamping automated production system according to claim 1, characterized in that: The centering platform comprises a centering platform substrate (24) and a centering device arranged on the centering platform substrate (24); the centering platform substrate (24) is provided with a plurality of groups of standard positioning pin holes and threaded holes; the centering device comprises a sheet material X-direction positioning block (29), a sheet material Y-direction positioning block (28), a sheet material X-direction cylinder centering assembly (23), and a sheet material Y-direction cylinder centering assembly (34); the sheet material X-direction positioning block (29) is positioned on one side of the upper surface of the centering platform substrate (24) in the X direction by a fixing device The sheet X-direction cylinder centering assembly (23) is arranged on the other side of the upper surface of the centering platform substrate (24) in the X direction and can push the sheet to be punched in the X direction to be close to the sheet X-direction positioning block (29). The sheet Y-direction positioning block (28) is positioned on the one side of the upper surface of the centering platform substrate (24) in the Y direction through a fixing device. The sheet Y-direction cylinder centering assembly (34) is arranged on the other side of the upper surface of the centering platform substrate (24) in the Y direction and can push the sheet to be punched in the Y direction to be close to the sheet Y-direction positioning block (28).

4. The flexible quick-change automobile arrangement die stamping automated production system according to claim 3, characterized in that: A double material detection sensor (27) is provided on the upper side of the centering platform base plate (24); a double material detection sensor bracket (26) extending backward and downward is connected to the rear end of the crossbeam frame (20); and the double material detection sensor (27) is connected to the lower end of the double material detection sensor bracket (26).

5. The flexible quick-change automobile arrangement die stamping automated production system according to claim 1, characterized in that: One of the columns of the column frame (3) near the front end of the conveying aluminum alloy frame (33) is connected to a motor mounting bracket (43), the servo motor (7) is mounted on one side of the motor mounting bracket (43), the transmission device comprises a reducer (42), a driving synchronous wheel (4), a driving synchronous belt (5), a driving driving wheel (6), a conveying driving wheel (8), a coupling (10), a conveying synchronous belt (32), and a conveying synchronous wheel (30), the reducer (42) is connected to the output end of the servo motor (7), the driving synchronous wheel (4) is connected to the output end of the reducer (42), the driving driving wheel (6) is arranged on the upper side of the driving synchronous wheel (4), the driving synchronous belt (5) is connected between the driving synchronous wheel (4) and the driving driving wheel (6), and the driving driving wheel (6) is connected to the conveying driving wheel (8). The conveying aluminum alloy frame (33) is connected to a conveying driving wheel (8), and the conveying driving wheels (8) on both sides of the front end of the conveying aluminum alloy frame (33) are connected through a coupling (10) and rotate synchronously. The conveying aluminum alloy frame (33) is connected to both sides of the rear end with conveying synchronous wheels (30). The conveying synchronous belt (32) surrounds the conveying driving wheel (8) and the conveying synchronous wheel (30) at corresponding positions. The conveying aluminum alloy frame (33) is provided with linear slide rails (25) on the inner sides of two side edges in the front and rear directions. The centering platform is positioned on the two conveying synchronous belts (32) on the conveying aluminum alloy frame (33) through a positioning device. The bottom of the centering platform substrate (24) is respectively connected to two slider mechanisms that cooperate with the two linear slide rails (25).

6. The flexible quick-change automobile arrangement die stamping automated production system according to claim 1, characterized in that: The outer edge of one of the sides of the conveying aluminum alloy frame (33) in the front-to-back direction is connected in sequence to a receiving position sensor (37), a zero position sensor (35) and a feeding position sensor (31); the receiving position sensor (37) is connected to the outer edge of one of the sides of the conveying aluminum alloy frame (33) in the front-to-back direction, close to the front end; the zero position sensor (35) is connected to the outer edge of one of the sides of the conveying aluminum alloy frame (33) in the front-to-back direction, close to the middle position; and the feeding position sensor (31) is connected to the outer edge of one of the sides of the conveying aluminum alloy frame (33) in the front-to-back direction, close to the rear end.

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