Welding workshop adjusting line and adjusting method

Abstract

The invention relates to a welding workshop adjusting line which comprises a horizontally-arranged plate chain, and a plate chain support is fixedly arranged on the upper surface of the plate chain. Lifters are arranged on the two sides of the plate chain and comprise vehicle frames, lifting mechanisms are arranged on the tops of the vehicle frames, supporting pieces are arranged on the tops of the lifting mechanisms, horizontal guide rails are arranged on the two sides of the plate chain, the guide rails are parallel to the plate chain, the vehicle frames are matched with the guide rails, and the vehicle frames are connected with return stroke driving mechanisms. A horizontal telescopic mechanism is arranged on the frame, the telescopic mechanism is connected with a horizontal driving rod, and the telescopic direction of the telescopic mechanism and the driving rod are perpendicular to the plate chain. In the process that the vehicle parts on the lifter are put down to the plate link chain support, the lifter can synchronously move along with the plate link chain, so that the plate link chain can continuously move without shutdown, and the conveying efficiency of a workshop can be improved.

Description

Technical Field

[0001] The invention belongs to the field of transmission equipment, in particular to an adjustment line and an adjustment method for a welding workshop. Background Art

[0002] The adjustment line of the passenger car welding (welding and assembly) workshop is used to transfer vehicle parts, which are automobile parts. The existing adjustment line usually includes a horizontally arranged plate chain, on which a plate chain bracket for supporting the vehicle parts is arranged, and elevators are arranged on both sides of the plate chain. The elevators are fixedly installed, and a support is arranged on the top of the elevator. The vehicle parts are usually transferred at a fixed point, that is, the vehicle parts are lowered to the support of the elevator through the aerial lifting equipment, and then the elevator drives the vehicle parts to move downward, and the vehicle parts are lowered to the plate chain bracket, and then the plate chain transports the vehicle parts to the next station. During the process of lowering the vehicle parts, the elevator and the plate chain are both stationary, and the plate chain runs intermittently instead of continuously, which affects the transmission efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an adjustment line and an adjustment method for a welding workshop to improve work efficiency.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is as follows: the welding workshop adjustment line comprises a horizontally arranged plate chain, a plate chain bracket is fixedly arranged on the upper surface of the plate chain; a lift is arranged on both sides of the plate chain, the lift comprises a frame, a lifting mechanism is arranged on the top of the frame, and a support is arranged on the top of the lifting mechanism.

[0005] Horizontal guide rails are arranged on both sides of the plate chain, the guide rails are parallel to the plate chain, the frame cooperates with the guide rails, and the frame is connected to a return drive mechanism;

[0006] The frame is provided with a horizontal telescopic mechanism, the telescopic mechanism is connected with a horizontal driving rod, and the telescopic direction of the telescopic mechanism and the driving rod are perpendicular to the plate chain.

[0007] Furthermore, it also includes a frame, the guide rail is arranged on the frame, and one end of the return drive mechanism is installed on the frame.

[0008] Furthermore, a first limiting frame is provided at the material receiving end of the frame, and a vertical second limiting frame is provided at the other end of the frame.

[0009] Furthermore, the second limit frame is provided with a sliding rod which horizontally passes through the second limit frame and slidably cooperates with the second limit frame, the sliding rod is parallel to the plate chain, and a limiting block is provided at one end of the sliding rod facing the frame, a pressure sensor is provided on the side of the limit block facing the frame, and a spring is provided on the outer sleeve of the sliding rod between the limit block and the second limit frame; the pressure sensor and the telescopic mechanism are both connected to the first controller.

[0010] Furthermore, a buffer pad is provided at one end of the frame facing the first limiting frame.

[0011] Furthermore, the telescopic mechanism and the return drive mechanism are both cylinders.

[0012] Furthermore, the support member comprises a front support arm and a rear support arm, and a support block is arranged at one end of the front support arm and the rear support arm facing the plate chain bracket, and a positioning groove is arranged on the upper surface of the support block.

[0013] Furthermore, a stand is provided on the top of the lifting mechanism, and a positioning shaft is provided on the stand, one end of the positioning shaft is rotatably matched with the stand, and the other end of the positioning shaft is connected to the stand through a torque sensor; an axially extending boss is provided on the outer wall of the positioning shaft, and a sleeve is fixedly provided at one end of the front support arm and the rear support arm away from the plate chain bracket, and a positioning groove axially penetrating the sleeve is provided on the inner wall of the sleeve, the sleeve is sleeved outside the positioning shaft, and the boss is located in the positioning groove; a cantilever is fixedly provided on the side wall of the sleeve, and the cantilever is coaxial with the front support arm or the rear support arm; a pulling mechanism is provided between the end of the cantilever and the stand, and the pulling mechanism and the torque sensor are both connected to a second controller.

[0014] The adjustment method of the above welding workshop adjustment line includes:

[0015] S1. Stop the elevator at the receiving end and use the aerial lifting equipment to lower the parts onto the supporting parts of the elevator;

[0016] S2, the telescopic mechanism extends, pushing the driving rod to move to the front of the plate chain bracket, and the plate chain bracket moves synchronously with the plate chain. When the plate chain bracket contacts the driving rod, it pushes the driving rod to move, and the driving rod drives the entire elevator to move;

[0017] S3, the lifting mechanism drives the support to move downward, and the parts on the support are placed on the plate chain bracket;

[0018] S4, the telescopic mechanism drives the driving rod to reset, the driving rod is separated from the plate chain bracket, and the elevator stops moving;

[0019] S5. The return drive mechanism drives the elevator back to the material receiving end.

[0020] Further, in step S2, the driving rods on both sides of the plate chain are moved to the front of the plate chain bracket and then plugged in and connected.

[0021] The beneficial effect of the present invention is that in the present invention, during the process of lowering the vehicle parts on the elevator to the plate chain bracket, the elevator can move synchronously with the plate chain, so the plate chain does not need to stop and can continue to move, which is beneficial to improving the transportation efficiency of the workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a top view schematic diagram of the present invention;

[0023] Figure 2 It is a front view schematic diagram of the present invention;

[0024] Figure 3 is a schematic side view of the lift;

[0025] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0026] Figure 5 It is a schematic diagram of the installation of the support;

[0027] Figure 6 yes Figure 5 A schematic cross-sectional view of the middle BB;

[0028] Attached figures: 1—plate chain; 2—plate chain bracket; 3—vehicle frame; 4—lifting mechanism; 5—support member; 51—front support arm; 52—rear support arm; 53—positioning groove; 54—sleeve; 55—cantilever; 56—support block; 6—guide rail; 7—return drive mechanism; 8—telescopic mechanism; 9—drive rod; 10—frame; 11—first limit frame; 12—second limit frame; 13—slide rod; 14—limit block; 15—pressure sensor; 16—spring; 17—first controller; 18—buffer pad; 19—stand; 20—positioning shaft; 21—tension mechanism; 22—boss; 23—second controller; 24—torque sensor. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] The welding workshop adjustment line of the present invention is as follows: Figures 1 to 6 As shown, it includes a horizontally arranged plate chain 1, a plate chain bracket 2 is fixedly arranged on the upper surface of the plate chain 1, the plate chain bracket 2 is used to support the vehicle parts, the plate chain 1 is used to drive the plate chain bracket 2 to move, and the plate chain 1 and the plate chain bracket 2 can be made of existing technology. Lifters are arranged on both sides of the plate chain 1, and the lifters include a frame 3, a lifting mechanism 4 is arranged on the top of the frame 3, and a support member 5 is arranged on the top of the lifting mechanism 4. The support member 5 can support the vehicle parts, and the support members 5 on the lifting mechanisms 4 on both sides of the plate chain 1 cooperate with each other to stably support a variety of vehicle parts. The lifting mechanism 4 is used to drive the support member 5 to rise and fall, so as to facilitate the lowering of the vehicle parts onto the plate chain bracket 2. The lifting mechanism 4 can adopt various existing hydraulic lifting equipment.

[0031] Horizontal guide rails 6 are provided on both sides of the plate chain 1, and the guide rails 6 are parallel to the plate chain 1. The frame 3 cooperates with the guide rails 6, and the frame 3 is connected with a return drive mechanism 7. Rollers or sliders can be provided at the bottom of the frame 3, and the rollers or sliders cooperate with the guide rails 6 so that the frame 3 can move linearly along the guide rails 6. The return drive mechanism 7 is used to pull the frame 3 back to the initial position, which is the material receiving end, that is, the position where the elevator receives the lowered parts.

[0032] The frame 3 is provided with a horizontal telescopic mechanism 8, and the telescopic mechanism 8 is connected with a horizontal driving rod 9, and the telescopic direction of the telescopic mechanism 8 and the driving rod 9 are perpendicular to the plate chain 1. The telescopic mechanism 8 can drive the driving rod 9 to move horizontally. When the telescopic mechanism 8 is extended, the driving rod 9 can move in front of the plate chain bracket 2. When the plate chain bracket 2 moves to the driving rod 9, it will contact the driving rod 9. The plate chain bracket 2 continues to move, which will push the driving rod 9 to move synchronously with the plate chain bracket 2. At this time, the driving rod 9 can drive the frame 3 to move as a whole. The moving direction and moving speed of the frame 3 are the same as the moving direction and moving speed of the plate chain 1, that is, the frame 3 can move synchronously with the plate chain 1. When the frame 3 moves, the vehicle parts are lowered onto the plate chain bracket 2.

[0033] The specific operation process of the present invention is as follows: in the initial state, the frame 3 is at the material receiving end and remains stationary, the telescopic mechanism 8 is in a retracted state, the driving rod 9 does not block the movement of the plate chain bracket 2, the support member 5 is at a position higher than the plate chain bracket 2, and the plate chain 1 and the plate chain bracket 2 move continuously at a uniform speed. The lifting equipment lifts the vehicle part to the top of the support member 5, and then puts the vehicle part on the support member 5. The telescopic mechanism 8 extends, driving the driving rod 9 to move to the front of the plate chain bracket 2, and the plate chain bracket 2 pushes the driving rod 9 to move after contacting the driving rod 9, and the driving rod 9 drives the frame 3 to move as a whole. During the process of the frame 3 moving synchronously with the plate chain 1, the lifting mechanism 4 drives the support member 5 to move downward, so that the height of the support member 5 is lower than the height of the top of the plate chain bracket 2, and the vehicle part on the support member 5 can be put on the plate chain bracket 2. Then the telescopic mechanism 8 shortens, driving the driving rod 9 to reset, so that the driving rod 9 is separated from the plate chain bracket 2, and the plate chain bracket 2 continues to move normally, while the frame 3 stops running. Finally, the return drive mechanism 7 is used to pull the frame 3 back to the material receiving end, and the lifting mechanism 4 drives the supporting member 5 to reset upward, and the frame 3 is back to the initial state.

[0034] It can be seen that in the present invention, in the process of lowering the vehicle parts on the elevator to the plate chain bracket 2, the elevator can move synchronously with the plate chain 1 at the same speed, so that the plate chain 1 does not need to stop and can move continuously, thereby improving the transmission efficiency.

[0035] The return drive mechanism 7 is only used to pull the frame 3 back to the material receiving end, but not to push the frame 3 to move with the plate chain 1. This is because the return drive mechanism 7 is difficult to accurately control the moving speed of the frame 3 and cannot ensure that the movement speed of the frame 3 is completely consistent with the moving speed of the plate chain 1.

[0036] The present invention further comprises a frame 10 , a guide rail 6 is fixedly arranged on the frame 10 , and a return drive mechanism 7 is installed on the frame 10 .

[0037] In order to limit the position of the frame 3 and ensure that the frame 3 accurately stays at the initial position of the material receiving end, a first limit frame 11 is provided at the material receiving end of the frame 10. When the frame 3 returns, the frame 3 stops moving when the end of the frame 3 contacts the first limit frame 11. A vertical second limit frame 12 is provided at the other end of the frame 10. The second limit frame 12 can block the frame 3, limit the position of the frame 3, and prevent the frame 3 from moving too long and moving outside the guide rail 6.

[0038] When the frame 3 reaches the second limit frame 12, the frame 3 stops moving. At this time, if the driving rod 9 has not yet retracted to the initial position, there is a large resistance between the driving rod 9 and the plate chain bracket 2, which may cause damage to the plate chain bracket 2. In order to ensure that the frame 3 is released from the synchronous movement of the frame 3 and the plate chain 1 in time before reaching the second limit frame 12 to prevent damage to the plate chain bracket 2, the second limit frame 12 of the present invention is provided with a sliding rod 13 that horizontally penetrates the second limit frame 12 and slides with the second limit frame 12. The sliding rod 13 is parallel to the plate chain 1, and a limiting block 14 is provided at one end of the sliding rod 13 facing the frame 3. A pressure sensor 15 is provided on the side of the limiting block 14 facing the frame 3. A spring 16 is provided on the outer sleeve of the sliding rod 13 between the limiting block 14 and the second limiting frame 12; the pressure sensor 15 and the telescopic mechanism 8 are both connected to a first controller 17. When the frame 3 approaches the second limit frame 12, the frame 3 first contacts the limit block 14, and the pressure sensor 15 is subjected to the pressure of the frame 3. As the frame 3 moves, the limit block 14 squeezes the spring 16, and the pressure on the pressure sensor 15 gradually increases. The pressure sensor 15 transmits the pressure signal to the first controller 17. When the first controller 17 receives the pressure signal, it controls the telescopic mechanism 8 to contract, driving the driving rod 9 to disengage from the plate chain bracket 2, preventing the driving rod 9 from blocking the movement of the plate chain bracket 2, thereby ensuring the normal operation of the plate chain bracket 2.

[0039] In order to reduce the collision force between the first limiting frame 11 and the frame 3 , a buffer pad 18 is provided at one end of the frame 3 facing the first limiting frame 11 . The buffer pad 18 is made of an existing rubber pad, sponge pad or the like.

[0040] In the present invention, the telescopic mechanism 8 and the return drive mechanism 7 are both cylinders, and commonly used devices that can drive devices to perform linear motion, such as hydraulic cylinders and linear motors, may also be used.

[0041] In the present invention, the support member 5 can be a support platform arranged directly above the lifting mechanism 4, but since two lifts are arranged on both sides of the plate chain 1, there is an appropriate spacing between the two lifts. When the width of a certain vehicle part is smaller than the spacing between the lifts, the vehicle part cannot be supported. In order to facilitate the support of vehicle parts of various widths, the support member 5 of the present invention includes a front support arm 51 and a rear support arm 52. The front support arm 51 and the rear support arm 52 are provided with a support block 52 at one end facing the plate chain bracket 2, and a positioning groove 53 is provided on the upper surface of the support block 52. The front support arm 51 and the rear support arm 52 can be a rod with a rectangular cross section. The front support arm 51 and the rear support arm 52 are located on both sides of the plate chain bracket 2 to ensure that when the front support arm 51 and the rear support arm 52 move downward, the vehicle parts on the front support arm 51 and the rear support arm 52 can be supported by the plate chain bracket 2. The positioning groove 53 can position the vehicle parts to prevent the vehicle parts from sliding. In order to facilitate the positioning of vehicle parts of various widths, a plurality of anti-skid grooves can be provided on the upper surfaces of the front support arm 51 and the rear support arm 52. The two side edges of the vehicle parts with smaller widths are supported and limited by the positioning grooves 53, and the two side edges of the vehicle parts with larger widths are supported and limited by the anti-skid grooves on the front support arm 51 and the rear support arm 52, thereby achieving support for vehicle parts of various widths.

[0042] When the front support arm 51 and the rear support arm 52 are used to support the vehicle part, one end of the front support arm 51 and the rear support arm 52 are fixedly connected to the top of the lifting mechanism 4, and the front support arm 51 and the rear support arm 52 are cantilevers. The center of gravity of the vehicle part is far away from the center of gravity of the frame 3. After the front support arm 51 and the rear support arm 52 bear the weight of the vehicle part, the force is transmitted to the lifting mechanism 4. At this time, one side of the frame 3 is subjected to force, while the other side is not subjected to force, and the force is unbalanced. Especially when the weight of the vehicle part is large, it is easy to cause the frame 3 to tip over toward the side of the plate chain 1. In order to improve the stability of the vehicle frame 3, a stand 19 is provided on the top of the lifting mechanism 4, and a positioning shaft 20 is provided on the stand 19, one end of the positioning shaft 20 is rotatably matched with the stand 19, and the other end of the positioning shaft 20 is connected to the stand 19 through a torque sensor 21; an axially extending boss 22 is provided on the outer wall of the positioning shaft 20, and a circular sleeve 54 is fixedly provided at one end of the front support arm 51 and the rear support arm 52 away from the plate chain bracket 2, and a positioning groove axially penetrating the sleeve 54 is provided on the inner wall of the sleeve 54, and the sleeve 54 is sleeved outside the positioning shaft 20, and the boss 22 is located in the positioning groove; a cantilever 55 is fixedly provided on the side wall of the sleeve 54, and the cantilever 55 is coaxial with the front support arm 51 or the rear support arm 52; a tension mechanism 21 is provided between the end of the cantilever 55 and the stand 19, and the tension mechanism 21 and the torque sensor 21 are both connected to a second controller 23. The tension mechanism 21 can be a hydraulic cylinder or other equipment.

[0043] After the front support arm 51 and the rear support arm 52 bear the weight of the vehicle part, the force is transmitted to the positioning shaft 20 through the sleeve 54. At this time, the positioning shaft 20 is subjected to torque, and the torque sensor 21 detects the magnitude of the torque, and then transmits the detection signal to the second controller 23. The second controller 23 controls the pulling mechanism 21 to apply appropriate downward pulling force to the cantilever 55 according to the magnitude of the torque. The front support arm 51 and the rear support arm 52 are located on one side of the frame 19, and the cantilever 55 is located on the other side of the frame 19. When the front support arm 51 and the rear support arm 52 bear the weight of the vehicle part, a downward pulling force is applied to the cantilever 55, so that the forces on both sides of the frame 19 are balanced, thereby making the forces on the entire frame 3 balanced, thereby improving the stability of the frame 3 and preventing the frame 3 from tipping over.

[0044] The second controller 23 and the first controller 17 may be the same controller, and specifically may be a PLC or the like.

[0045] The adjustment method of the welding workshop adjustment line of the present invention comprises:

[0046] S1. Stop the elevator at the receiving end and use the aerial lifting equipment to lower the parts onto the supporting part 5 of the elevator;

[0047] S2, the telescopic mechanism 8 extends, pushing the driving rod 9 to move to the front of the plate chain bracket 2, and the plate chain bracket 2 moves synchronously with the plate chain 1. When the plate chain bracket 2 contacts the driving rod 9, it pushes the driving rod 9 to move, and the driving rod 9 drives the entire elevator to move;

[0048] S3, the lifting mechanism 4 drives the support member 5 to move downward, and the vehicle parts on the support member 5 are placed on the plate chain bracket 2;

[0049] S4, the telescopic mechanism 8 drives the driving rod 9 to reset, the driving rod 9 is separated from the plate chain bracket 2, and the elevator stops moving;

[0050] S5, the return drive mechanism 7 drives the elevator back to the material receiving end.

[0051] In step S2, the driving rods 9 on both sides of the plate chain 1 move to the front of the plate chain bracket 2 and are plugged in and connected. Specifically, the driving rods 9 on both sides of the plate chain 1 are coaxially arranged, a plug is arranged at the end of one driving rod 9, and a socket is arranged at the end of the other driving rod 9. After the driving rod 9 is extended, the plug can be inserted into the socket, so that the two driving rods 9 are connected as one, and then the frames 3 on both sides of the plate chain 1 are connected as one, so as to improve the stability of the two frames 3 during movement.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustment line in a welding workshop, comprising a horizontally arranged plate chain (1), wherein a plate chain bracket (2) is fixedly arranged on the upper surface of the plate chain (1); a lift is arranged on both sides of the plate chain (1), wherein the lift comprises a frame (3), wherein a lifting mechanism (4) is arranged on the top of the frame (3), and a support member (5) is arranged on the top of the lifting mechanism (4), wherein the characteristics are: Horizontal guide rails (6) are arranged on both sides of the plate chain (1), the guide rails (6) are parallel to the plate chain (1), the frame (3) cooperates with the guide rails (6), and the frame (3) is connected to a return drive mechanism (7); The frame (3) is provided with a horizontal telescopic mechanism (8), the telescopic mechanism (8) is connected to a horizontal driving rod (9), and the telescopic direction of the telescopic mechanism (8) and the driving rod (9) are perpendicular to the plate chain (1).

2. The welding workshop adjustment line according to claim 1, characterized in that: It also comprises a frame (10), the guide rail (6) is arranged on the frame (10), and the return drive mechanism (7) is installed on the frame (10).

3. The welding workshop adjustment line according to claim 2, characterized in that: A first limiting frame (11) is arranged at the material receiving end of the frame (10), and a vertical second limiting frame (12) is arranged at the other end of the frame (10).

4. The welding workshop adjustment line according to claim 3, characterized in that: The first limit frame (11) is provided with a slide bar (13) which horizontally passes through the second limit frame (12) and is slidably matched with the second limit frame (12); the slide bar (13) is parallel to the plate chain (1), and a limit block (14) is provided at one end of the slide bar (13) facing the frame (3); a pressure sensor (15) is provided on the side of the limit block (14) facing the frame (3); a spring (16) is provided on the outer sleeve of the slide bar (13) between the limit block (14) and the second limit frame (12); the pressure sensor (15) and the telescopic mechanism (8) are both connected to a first controller (17).

5. The welding workshop adjustment line according to claim 3, characterized in that: A buffer pad (18) is provided at one end of the vehicle frame (3) facing the first limiting frame (11).

6. The welding workshop adjustment line according to claim 1, characterized in that: The telescopic mechanism (8) and the return drive mechanism (7) are both cylinders.

7. The welding workshop adjustment line according to claim 1, characterized in that: The support member (5) comprises a front support arm (51) and a rear support arm (52), and a support block (56) is provided at one end of the front support arm (51) and the rear support arm (52) facing the plate chain bracket (2), and a positioning groove (53) is provided on the upper surface of the support block (56).

8. The welding workshop adjustment line according to claim 7, characterized in that: A stand (19) is arranged on the top of the lifting mechanism (4), and a positioning shaft (20) is arranged on the stand (19), one end of the positioning shaft (20) is rotatably matched with the stand (19), and the other end of the positioning shaft (20) is connected to the stand (19) through a torque sensor (24); an axially extending boss (22) is arranged on the outer wall of the positioning shaft (20), and a sleeve (54) is fixedly arranged at one end of the front support arm (51) and the rear support arm (52) away from the plate chain bracket (2), and the ... 4) The inner wall is provided with a positioning groove axially penetrating the sleeve (54), the sleeve (54) is sleeved outside the positioning shaft (20), and the boss (22) is located in the positioning groove; a cantilever (55) is fixedly provided on the side wall of the sleeve (54), and the cantilever (55) is coaxial with the front support arm (51) or the rear support arm (52); a tension mechanism (21) is provided between the end of the cantilever (55) and the stand (19), and the tension mechanism (21) and the torque sensor (21) are both connected to a second controller (23).

9. The adjustment method of the welding workshop adjustment line according to any one of claims 1 to 8, characterized in that: include: S1. The elevator stops at the receiving end, and the parts are lowered onto the supporting part (5) of the elevator by using an aerial lifting device; S2, the telescopic mechanism (8) extends, pushing the driving rod (9) to move to the front of the plate chain bracket (2), and the plate chain bracket (2) moves synchronously with the plate chain (1). When the plate chain bracket (2) contacts the driving rod (9), it pushes the driving rod (9) to move, and the driving rod (9) drives the entire elevator to move; S3, the lifting mechanism (4) drives the support member (5) to move downward, and the vehicle parts on the support member (5) are placed on the plate chain bracket (2); S4, the telescopic mechanism (8) drives the driving rod (9) to reset, the driving rod (9) is separated from the plate chain bracket (2), and the elevator stops moving; S5: The return drive mechanism (7) drives the elevator back to the material receiving end.

10. The adjustment method according to claim 9, characterized in that: In step S2, the driving rods (9) on both sides of the plate chain (1) move to the front of the plate chain bracket (2) and are plugged in and connected.

Images