Automatic traction and cutting device for coach roof skin

Abstract

The present invention relates to a bus processing tool, specifically, an automatic traction and cutting device for bus roof skin. It is characterized by comprising a material unwinding rack, two feeding rollers and a bracket, a gantry frame between the two feeding rollers, a laser cutting machine on the gantry frame, a support plate on the bracket, guide rails on the brackets corresponding to the two long sides of the support plate, a tractor on the guide rails, a lower chuck on the top of the tractor, a first driving cylinder between the lower chuck and the traction workshop, a connecting plate on the top of the tractor, a 7-shaped upper chuck on the connecting plate, the middle part of the upper chuck is hinged on the connecting plate, the upper end of the upper chuck is hinged with the traction workshop by a second driving cylinder, an initial position detection sensor, an aluminum plate length detection sensor and an aluminum plate covering termination position detection sensor are arranged on the bracket above the support plate, and a driving mechanism is connected to a controller through a wire. The use of the cutting device consumes less manpower, has high work efficiency, saves materials, and can avoid safety hazards.

Description

Technical Field

[0001] The invention relates to a passenger car processing tool, in particular to an automatic pulling and cutting device for a passenger car roof cover skin. Background Art

[0002] It is well known in the automotive industry that in bus design, after the structural welding of the roof (which is a structural weldment) is completed, a layer of 2mm aluminum plate (rain and snow proof, about 10 meters long and 2.2 meters wide) needs to be covered on the top of the arc. This aluminum plate is called the bus roof skin. The bus roof skin is made by pulling and cutting aluminum coils.

[0003] At present, the automotive industry uses manual operation to pull and cut the bus roof skin. That is, the staff first manually pulls the aluminum coil to the required length, and then manually measures and cuts the aluminum plate to obtain the bus roof skin. However, due to the large size of the bus roof skin (about 10 meters long and 2.2 meters wide), it takes 6-7 people to pull it out of the aluminum coil, which consumes a lot of manpower and has low work efficiency. Moreover, the manual cutting positioning is inaccurate, and the bus roof skin needs to be cut again during subsequent processing, which wastes materials. In addition, the thickness of the aluminum coil is very thin, and there are great safety hazards in the manual pulling process. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an automatic traction and cutting device for a passenger car roof skin, which consumes less manpower, has higher work efficiency, saves materials and can avoid potential safety hazards.

[0005] In order to solve the above problems, the following technical solutions are provided:

[0006] The automatic traction and cutting device for the roof skin of a passenger car of the present invention is characterized in that it comprises a material unwinding rack, two feeding rollers and a bracket arranged in sequence along a straight line; a gantry is arranged between the two feeding rollers, and a laser cutting machine is arranged on the gantry, and the cutting head of the laser cutting machine faces downward. A horizontally arranged support plate is arranged on the bracket, and the support plate is a strip plate, and its longitudinal direction is consistent with the straight line direction where the material unwinding rack, the feeding roller and the bracket are located. The brackets corresponding to the two long sides of the support plate are provided with guide rails arranged along the longitudinal direction of the support plate, and the guide rails are provided with tractors, and the brackets are provided with a driving mechanism for driving the tractors to travel along the longitudinal direction of the guide rails. A plate-shaped lower chuck is arranged horizontally on the top of the tractor, and the lower chuck is higher than the height of the support plate. The lower chuck cooperates with the traction workshop in a transverse sliding state along the support plate, and the lower chuck and the traction workshop have a first driving cylinder, and when the piston rod of the first driving cylinder extends to the outer limit position, the lower chuck extends outward from the tractor side close to the support plate. There is a vertically arranged connecting plate on the top of the tractor on one side of the lower chuck, and there is a 7-shaped upper chuck on the connecting plate. The middle part of the upper chuck is hinged on the connecting plate, and the upper end of the upper chuck is hinged to the traction workshop with a second driving cylinder. When the lower chuck extends outward from the tractor, the piston rod of the second driving cylinder extends, and the lower end of the upper chuck abuts against the lower chuck. An initial position detection sensor, an aluminum plate length detection sensor, and an aluminum plate covering end position detection sensor are sequentially arranged on the bracket above the support plate from one end of the feed roller behind the support plate to the other end. The driving mechanism is connected to a controller through wires, and the initial position detection sensor, the aluminum plate length detection sensor, the aluminum plate covering end position detection sensor, the laser cutting mechanism, the feed roller, the first driving cylinder, and the second driving cylinder are all connected to the controller through wires.

[0007] Among them, the top of the tractor is provided with a strip support block, the longitudinal direction of the strip support block is arranged along the transverse direction of the support plate, the top of the strip support block is provided with a longitudinal slide groove, the two ends of the longitudinal slide groove are respectively located on the two end surfaces of the strip support block, so that the two ends of the longitudinal slide groove are open, the lower clamp is located in the longitudinal slide groove, and the lower clamp and the longitudinal slide groove are in sliding cooperation.

[0008] The feeding roller comprises a column, and an upper pressure roller and a lower active roller are arranged on the side wall of the column. The upper pressure roller and the lower active roller are arranged side by side. A driving motor for driving the lower active roller to rotate is arranged on the column, and the driving motor is connected to the controller through a wire.

[0009] The lower ends of the two vertical parts of the gantry are respectively located on the tops of the columns of the two feeding rollers, and the laser cutting machine is located on the horizontal part of the gantry.

[0010] The driving mechanism includes a traction motor and a driven reel located on the bracket, the driven reel and the bracket are rotatably matched, the driven reel is located below one end of the guide rail, the traction motor is located below the other end of the guide rail, a driving reel is fixed on the output shaft of the traction motor, the driving reel and the driven reel have the same height, a steel wire rope is arranged between the driving reel and the driven reel, one end of the steel wire rope is connected to the driven reel from the bottom of the driven reel and then fixed to the corresponding traction vehicle, the other end of the steel wire rope is connected to the driving reel from the bottom of the driving reel and then fixed to the corresponding traction vehicle, thereby driving the traction vehicle to move along the guide rail; the traction motors are connected to the controller through wires.

[0011] The above solution has the following advantages:

[0012] The automatic traction and cutting device for the roof skin of a passenger car of the present invention comprises a discharge rack, two feeding rollers and a bracket arranged in sequence, a gantry is arranged between the two feeding rollers, a laser cutting machine is arranged on the gantry, a support plate is arranged on the bracket, guide rails are arranged on the brackets corresponding to the two long sides of the support plate, and a tractor is arranged on the guide rails, a lower clamp is arranged on the top of the tractor, the lower clamp and the traction workshop have a first driving cylinder, a vertically arranged connecting plate is arranged on the top of the tractor on one side of the lower clamp, a 7-shaped upper clamp is arranged on the connecting plate, the middle part of the upper clamp is hinged on the connecting plate, the upper end of the upper clamp and the traction workshop are hinged with a second driving cylinder, an initial position detection sensor, an aluminum plate length detection sensor and an aluminum plate covering termination position detection sensor are arranged on the bracket above the support plate, and the driving mechanism is connected to a controller through a wire, and the initial position detection sensor, the aluminum plate length detection sensor, the aluminum plate covering termination position detection sensor, the laser cutting mechanism, the feeding roller, the first driving cylinder and the second driving cylinder are all connected to the controller through a wire. When in use, the aluminum coil is placed on the discharge coil, and the passenger car roof is placed on the support plate. During operation, first, the tractor is located at the initial position (one end of the guide rail close to the feed roller), and one end of the aluminum coil is fed into the feed roller. The feed roller drives the aluminum plate forward and reaches the tractor. The controller controls the piston rods of the first drive cylinder and the second drive cylinder to extend, and the upper and lower chucks clamp the aluminum plate. Then, the initial position detection sensor detects the initial position of the aluminum plate, and the controller controls the two feed rollers and the drive mechanism to drive the tractor to move synchronously to pull out the aluminum plate. Then, when the aluminum plate length detection sensor detects the aluminum plate information, the controller controls the laser cutting machine to cut down, and then move horizontally to cut the aluminum plate to complete the fixed-length cutting of the bus roof skin. After that, the drive mechanism drives the aluminum plate to run to the aluminum plate covering end position detection sensor through the tractor, and the drive mechanism stops running, the piston rods of the first drive cylinder and the second drive cylinder shrink, and the cut bus roof skin falls onto the bus roof. Finally, the skin and bus roof are removed to enter the next process, and the tractor runs to the initial position to wait for the next pulling. This automatic traction and cutting device for the roof skin of a passenger car automatically pulls and cuts the aluminum coil without manual intervention, which greatly reduces the consumption of manpower and improves work efficiency. In addition, the initial position detection sensor and the aluminum plate length detection sensor are used to locate the length of the aluminum plate, and the laser cutting machine is used for cutting. Compared with the manual measurement and cutting in the background technology, the dimensional accuracy is greatly improved, and the subsequent processing does not require cutting, saving raw materials. At the same time, there is no need for manual pulling, thus avoiding the safety hazards in the manual pulling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the automatic traction and cutting device for the roof skin of a passenger car of the present invention;

[0014] Figure 2 yes Figure 1Right side view (without unwinding rack, feeding roller, initial position detection sensor, aluminum plate length detection sensor, aluminum plate covering end position detection sensor and controller);

[0015] Figure 3 yes Figure 2 A-part enlarged diagram (guide rail omitted);

[0016] Figure 4 yes Figure 3 Schematic diagram of the right side. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0018] like Figures 1 to 4 As shown, the automatic traction and cutting device for the roof skin of a passenger car of the present invention comprises a material unwinding rack 1, two feeding rollers and a bracket 15 arranged in sequence along a straight line; a gantry 6 is arranged between the two feeding rollers, and a laser cutting machine 7 is arranged on the gantry 6, with the cutting head of the laser cutting machine 7 facing downward. A horizontally arranged support plate 12 is arranged on the bracket 15, and the support plate 12 is a strip plate, and its longitudinal direction is consistent with the straight line direction where the material unwinding rack 1, the feeding roller and the bracket 15 are located. The brackets 15 corresponding to the two long sides of the support plate 12 are provided with guide rails 11 arranged along the longitudinal direction of the support plate 12, and the guide rails 11 are provided with tractors 9, and the brackets 15 are provided with a driving mechanism for driving the tractor 9 to move along the longitudinal direction of the guide rails 11. The top of the tractor 9 is provided with a plate-shaped lower clamp 23, which is arranged horizontally, and the height of the lower clamp 23 is higher than the height of the support plate 12. The lower clamp 23 and the tractor 9 are matched in a lateral sliding manner along the support plate 12. A first driving cylinder 22 is provided between the lower clamp 23 and the tractor 9. When the piston rod of the first driving cylinder 22 is extended to the outer limit position, the lower clamp 23 extends outward from the side of the tractor 9 close to the support plate 12. A vertically arranged connecting plate 25 is provided on the top of the tractor 9 on one side of the lower clamp 23. A 7-shaped upper clamp 18 is provided on the connecting plate 25. The middle part of the upper clamp 18 is hinged on the connecting plate 25. A second driving cylinder 16 is hinged between the upper end of the upper clamp 18 and the tractor 9. When the lower clamp 23 extends outward of the tractor 9, the piston rod of the second driving cylinder 16 extends, and the lower end of the upper clamp 18 abuts against the lower clamp 23. The bracket 15 above the support plate 12 is provided with an initial position detection sensor 8, an aluminum plate length detection sensor 20, and an aluminum plate covering end position detection sensor 19 in sequence from one end of the support plate 12 to the other end of the feed roller. The driving mechanism is connected to the controller 10 through a wire, and the initial position detection sensor 8, the aluminum plate length detection sensor 20, the aluminum plate covering end position detection sensor 19, the laser cutting mechanism, the feed roller, the first driving cylinder 22, and the second driving cylinder 16 are all connected to the controller 10 through a wire.

[0019] A strip support block 24 is provided on the top of the tractor 9, and the longitudinal direction of the strip support block 24 is arranged along the transverse direction of the support plate 12. A longitudinal slide groove is provided on the top of the strip support block 24, and the two ends of the longitudinal slide groove are respectively located on the two end surfaces of the strip support block 24, so that both ends of the longitudinal slide groove are open, and the lower clamp 23 is located in the longitudinal slide groove, and the lower clamp 23 and the longitudinal slide groove are in sliding cooperation.

[0020] The feeding roller includes a column 2, and an upper pressure roller 5 and a lower active roller 3 are arranged on the side wall of the column 2. The upper pressure roller 5 and the lower active roller 3 are arranged side by side. The column 2 is provided with a driving motor for driving the lower active roller 3 to rotate, and the driving motor is connected to the controller 10 through a wire.

[0021] The lower ends of the two vertical parts of the gantry 6 are respectively located on the tops of the columns 2 of the two feeding rollers, and the laser cutting machine 7 is located on the horizontal part of the gantry 6.

[0022] The driving mechanism includes a traction motor 21 and a driven reel 17 located on the bracket 15. The driven reel 17 and the bracket 15 are rotatably matched. The driven reel 17 is located below one end of the guide rail 11, and the traction motor 21 is located below the other end of the guide rail 11. A driving reel 13 is fixed to the output shaft of the traction motor 21. The driving reel 13 and the driven reel 17 have the same height. A wire rope 14 is arranged between the driving reel 13 and the driven reel 17. One end of the wire rope 14 is connected to the driven reel 17 from the bottom of the driven reel 17 and is fixed to the corresponding tractor 9. The other end of the wire rope 14 is connected to the driving reel 13 from the bottom of the driving reel 13 and is fixed to the corresponding tractor 9, thereby driving the tractor 9 to move along the guide rail 11. The traction motor 21 is connected to the controller 10 through a wire.

[0023] The first driving cylinder 22 and the second driving cylinder 16 are both servo electric cylinders.

[0024] When in use, the aluminum coil is placed on the unwinding coil, and the bus roof 4 is placed on the support plate 12. When working, first, the tractor 9 is located at the initial position near one end of the guide rail 11 of the feed roller, and one end of the aluminum coil is fed into the feed roller. The feed roller drives the aluminum plate forward and reaches the tractor 9. The controller 10 controls the piston rods of the first drive cylinder 22 and the second drive cylinder 16 to extend, and the upper chuck 18 and the lower chuck 23 clamp the aluminum plate. Next, the initial position detection sensor 8 detects the initial position of the aluminum plate, and the controller 10 controls the two feed rollers and the drive mechanism to drive the tractor 9 to move synchronously and pull out the aluminum plate. Then, when the aluminum plate length detection sensor 20 detects the aluminum plate information, the controller 10 controls the laser cutting machine 7 to cut down, and then moves horizontally to cut the aluminum plate to complete the fixed-length cutting of the bus roof skin. After that, the driving mechanism drives the aluminum plate to the aluminum plate covering end position detection sensor 19 through the tractor 9, the driving mechanism stops running, the piston rods of the first driving cylinder 22 and the second driving cylinder 16 shrink, and the cut bus roof skin falls onto the bus roof 4. Finally, the skin and bus roof 4 are removed to enter the next process, and the tractor 9 runs to the initial position and waits for the next pulling.

Claims

1. Automatic traction and cutting device for passenger car roof skin, characterized in that The invention comprises a material unloading rack (1), two material feeding rollers and a bracket (15) arranged in sequence along a straight line; a gantry (6) is arranged between the two material feeding rollers, a laser cutting machine (7) is arranged on the gantry (6), and the cutting head of the laser cutting machine (7) faces downward; a horizontally arranged support plate (12) is arranged on the bracket (15), and the support plate (12) is a strip plate, and its longitudinal direction is consistent with the straight line direction where the material unloading rack (1), the material feeding rollers and the bracket (15) are located; guide rails (11) arranged along the longitudinal direction of the support plate (12) are arranged on the brackets (15) corresponding to the two long sides of the support plate (12), and a tractor (9) is arranged on the guide rails (11), and a device for driving the tractor (9) along the guide rails (11) is arranged on the brackets (15). 1) A longitudinally moving driving mechanism; a plate-shaped lower clamp (23) is provided on the top of the tractor (9), the lower clamp (23) is arranged horizontally, the height of the lower clamp (23) is higher than the height of the support plate (12), the lower clamp (23) and the tractor (9) are fitted in a transverse sliding manner along the support plate (12), a first driving cylinder (22) is provided between the lower clamp (23) and the tractor (9), when the piston rod of the first driving cylinder (22) is extended to the outer limit position, the lower clamp (23) extends outward from the side of the tractor (9) close to the support plate (12); a vertically arranged connecting plate (25) is provided on the top of the tractor (9) on the side of the lower clamp (23), and a 7-shaped upper clamp is provided on the connecting plate (25). The upper chuck (18) is hingedly connected to the connecting plate (25) in the middle thereof, and a second driving cylinder (16) is hingedly connected between the upper end of the upper chuck (18) and the tractor (9). When the lower chuck (23) extends outward from the tractor (9), the piston rod of the second driving cylinder (16) extends, and the lower end of the upper chuck (18) abuts against the lower chuck (23). An initial position detection sensor (8), an aluminum plate length detection sensor (20), and an aluminum plate covering termination position detection sensor (19) are sequentially arranged on the bracket (15) above the support plate (12) from one end of the feed roller behind the support plate (12) to the other end thereof. The driving mechanism is connected to a controller (10) via a wire, and the initial position detection sensor (8) is connected to the aluminum plate length detection sensor (20) and the aluminum plate covering termination position detection sensor (19). The sensor (8), the aluminum plate length detection sensor (20), the aluminum plate covering end position detection sensor (19), the laser cutting machine (7) structure, the feed roller, the first drive cylinder (22) and the second drive cylinder (16) are all connected to the controller (10) through wires; the top of the tractor (9) is provided with a strip support block (24), the longitudinal direction of the strip support block (24) is arranged along the transverse direction of the support plate (12), the top of the strip support block (24) is provided with a longitudinal slide groove, the two ends of the longitudinal slide groove are respectively located on the two end surfaces of the strip support block (24), so that the two ends of the longitudinal slide groove are open, the lower clamp (23) is located in the longitudinal slide groove, and the lower clamp (23) and the longitudinal slide groove are slidably matched;The feeding roller comprises a column (2), and an upper pressure roller (5) and a lower active roller (3) are provided on the side wall of the column (2), and the upper pressure roller (5) and the lower active roller (3) are arranged side by side in an upper and lower manner. A driving motor for driving the lower active roller (3) to rotate is provided on the column (2), and the driving motor is connected to the controller (10) via a wire. ; 2. The automatic traction and cutting device for the roof skin of a passenger car as claimed in claim 1 is characterized in that The lower ends of the two vertical parts of the gantry (6) are respectively located on the tops of the uprights (2) of the two feeding rollers, and the laser cutting machine (7) is located on the horizontal part of the gantry (6).

3. The automatic traction and cutting device for the roof skin of a passenger car according to claim 1 or 2, characterized in that The driving mechanism comprises a traction motor (21) and a driven reel (17) located on the bracket (15); the driven reel (17) and the bracket (15) are rotatably matched; the driven reel (17) is located below one end of the guide rail (11); the traction motor (21) is located below the other end of the guide rail (11); a driving reel (13) is fixed to the output shaft of the traction motor (21); the driving reel (13) and the driven reel (17) are at the same height; the driving reel (13) A steel wire rope (14) is arranged between the driven reel (17), one end of the steel wire rope (14) is connected to the driven reel (17) from below the driven reel (17) and then fixed to the corresponding traction vehicle (9), and the other end of the steel wire rope (14) is connected to the driving reel (13) from below the driving reel (13) and then fixed to the corresponding traction vehicle (9), thereby driving the traction vehicle (9) to move along the guide rail (11); the traction motor (21) is connected to the controller (10) via a wire.

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