An automated welding production line for carriage side panels

Abstract

The application provides a kind of carriage side plate automation welding production line, mainly relates to the field of special vehicle carriage welding.A kind of carriage side plate automation welding production line, including spot welding platform and conveying line, conveying line has a plurality of welding positions, first lifting seat is provided in spot welding platform, first lifting seat is rotatably provided with a plurality of lifting rollers, when the first lifting seat is lifted, lifting roller is exposed above spot welding platform after passing through long hole, and at this time, lifting roller is consistent with conveying line height, welding manipulator is arranged on cantilever frame, lifting frame is arranged on both sides of welding position, lifting arm is slidably arranged on lifting slide rail, stretching arm is arranged at the front end of lifting arm, clamping head is arranged at the front end of stretching arm, second lifting seat is arranged below welding position, a plurality of support rods are arranged in array on the top of second lifting seat.The beneficial effects of the application are that the spot welding process and the full welding process of the carriage side plate are connected, the transfer time between the two processes is reduced, and the processing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application mainly relates to the field of special vehicle carriage welding, in particular to a carriage side plate automatic welding production line. BACKGROUND

[0002] The special vehicle is mainly designed according to the main engine size of the main engine factory, and the appropriate carriage is matched to complete the assembly of the special vehicle. The carriage side plate is welded by using square tubes as the framework and steel plates as the protective plates. Due to the large overall size, it is usually welded after being laid flat and positioned on the welding platform. In the welding process, the skeleton is first positioned and then fixed by manual spot welding, and then full welding is completed by manual or welding equipment.

[0003] Now in order to improve the welding quality and welding efficiency, the full welding operation is usually completed by using 1-2 welding manipulators. Because the operation actions of spot welding and full welding are different, the processing time is also different, which leads to the whole welding process. Either after manual spot welding, wait for the manipulator to complete the full welding operation, or after manual spot welding, the carriage side plate after spot welding is transported, and then the full welding is completed after the second feeding and positioning.

[0004] The above processing methods all lead to the fact that the production materials cannot be fully loaded, which makes the whole process not continuous and the production efficiency still has a large space for improvement. SUMMARY

[0005] In order to solve the problems of the prior art, the present application provides a carriage side plate automatic welding production line, which connects the spot welding process and the full welding process of the carriage side plate, reduces the transportation time between the two processes, and greatly improves the use efficiency of production materials.

[0006] In order to achieve the above purpose, the present application is realized by the following technical scheme:

[0007] An automatic welding production line for carriage side plates comprises a spot welding platform and a conveying line, the spot welding platform is arranged upstream of the conveying line, the conveying line is provided with a plurality of welding positions, a plurality of long holes are linearly arranged on the spot welding platform, a first lifting seat is arranged in the spot welding platform, a plurality of lifting rollers are rotatably arranged on the first lifting seat, the lifting rollers correspond to the long holes one by one, at least one of the lifting rollers is a power roller, when the first lifting seat is lifted, the lifting rollers are exposed above the spot welding platform after passing through the long holes, and at this time, the lifting rollers are consistent in height with the conveying line, the conveying line is a roller conveyor, a cantilever frame is arranged above each welding position, a welding manipulator is arranged on the cantilever frame, lifting frames are arranged on both sides of each welding position, lifting slide rails and lifting lead screw driving mechanisms are vertically arranged on the lifting frames, lifting arms are slidably arranged on the lifting slide rails, extension arms are arranged at the front ends of the lifting arms, extension hydraulic cylinders are arranged between the lifting arms and the extension arms, the extension arms are in a Y-shaped structure, C-shaped clamping heads are arranged at the front ends of the extension arms, a second lifting seat is arranged below each welding position, a plurality of support rods are arranged in an array on the top of the second lifting seat, when the second lifting seat is lifted, the support rods lift the side plates through the gaps of the conveying line, positioning frames are arranged below the ends of the welding positions, positioning plates are slidably arranged on the positioning frames, lifting cylinders for driving the positioning plates to lift are arranged on the positioning frames, when the positioning plates are lifted by the lifting cylinders, the positioning plates pass through the gaps of the conveying line to position the side plates.

[0008] The first lifting seat comprises a first lifting hydraulic cylinder and a plurality of first lifting sleeves, a first lifting plate is arranged at the top of each first lifting sleeve, a plurality of rotating seats are arranged on the first lifting plate, and the lifting rollers are arranged on the rotating seats one by one.

[0009] The lifting rollers close to the conveying line are power rollers, and the power rollers are rubber rollers.

[0010] The second lifting seat comprises a second lifting hydraulic cylinder and a plurality of second lifting sleeves, a second lifting plate is arranged at the top of each second lifting sleeve, and the support rods are arranged in an array on the top of the second lifting plate.

[0011] The front end of the lifting arm has a sliding chamber, a plurality of limiting sliding grooves are arranged in the sliding chamber, a sliding pair matched with the limiting sliding grooves is arranged on the extension arm, the bottom of the extension hydraulic cylinder is matched with the sliding chamber, and the front end of the piston rod of the extension hydraulic cylinder is fixedly connected with the end of the extension arm.

[0012] The front end of the clamping head is a trapezoidal opening, and the rear end of the clamping head is a butt joint groove matched with the thickness of the carriage side plate.

[0013] A clamping cylinder is arranged at the top of the clamping head, the piston rod of the clamping cylinder is exposed in the butt joint groove through the top of the clamping head, and a clamping piece is arranged at the front end of the piston rod of the clamping cylinder.

[0014] The lifting arms on both sides are synchronously lifted, and when the two lifting arms lift the carriage side plate to the welding height, the distance between the carriage side plate and the conveying line is greater than the height of the single carriage side plate.

[0015] The conveying line segment control of the area where the welding position is located.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The present application connects the spot welding process and the full welding process of the carriage side plate welding process, realizes the automatic conveying of the spot welding carriage side plate through the conveying line, enables the carriage side plate to smoothly complete the automatic full welding operation at the welding position, and improves the welding efficiency.

[0018] The present application can fully utilize the production materials of the spot welding position, thereby improving the production efficiency, realizing the special post for special person, and improving the utilization rate of personnel.

[0019] The present application completes the grabbing and positioning of the carriage side plate through the stretching arm, realizes the lifting of the carriage side plate through the lifting arm, can automatically complete the work operation of the full welding process, does not need human participation, greatly improves the degree of automation, and improves the production efficiency.

[0020] The multiple full welding positions are linearly arranged, the workpieces are transferred between the multiple welding processes through the adjustment of the conveying state of the carriage side plate, the workpiece transfer time is reduced, and the overall machining efficiency is improved. DETAILED DESCRIPTION

[0021] FIG. 1 is a state reference diagram of the present application; Figure 1 is a state reference diagram of the present application;

[0022] FIG. 2 is a front view of the present application; Figure 2 is a front view of the present application;

[0023] FIG. 3 is a top view of the present application; Figure 3 is a top view of the present application;

[0024] FIG. 4 is a first lifting seat structure diagram of the present application; Figure 4 is a first lifting seat structure diagram of the present application;

[0025] FIG. 5 is a second lifting seat structure diagram of the present application; Figure 5 is a second lifting seat structure diagram of the present application;

[0026] FIG. 6 is a lifting frame structure diagram of the present application; Figure 6 is a lifting frame structure diagram of the present application;

[0027] FIG. 7 is a stretching arm partial section structure diagram of the present application; Figure 7 is a stretching arm partial section structure diagram of the present application;

[0028] FIG. 8 is a stretching arm partial section structure diagram of the present application;Figure 8 is the present invention Figure 1 A part of the structure is enlarged in the schematic view.

[0029] attached Figure 9 is the present invention Figure 2 B part of the structure is enlarged in the schematic view.

[0030] attached Figure 10 is the present invention Figure 6 C part of the structure is enlarged in the schematic view.

[0031] Reference signs shown in the drawings: 1, spot welding platform; 2, conveying line; 3, welding position; 4, first lifting seat; 5, lifting frame; 6, lifting arm; 7, second lifting seat; 8, cantilever frame; 9, positioning frame; 11, long hole; 41, lifting roller; 42, first lifting hydraulic cylinder; 43, first lifting sleeve; 44, first lifting seat; 45, rotating seat; 51, lifting slide rail; 52, lifting screw drive mechanism; 61, extension arm; 62, extension hydraulic cylinder; 63, clamping head; 631, trapezoidal opening; 632, butt joint groove; 64, sliding pair; 65, clamping cylinder; 66, clamping piece; 71, support rod; 72, second lifting hydraulic cylinder; 73, second lifting sleeve; 74, second lifting seat; 81, welding manipulator; 91, positioning plate; 92, lifting cylinder. DETAILED DESCRIPTION

[0032] The present application will be further described with reference to the drawings and embodiments. It should be understood that these embodiments are only used to explain the present application and not used to limit the scope of the present application. In addition, it should be understood that after reading the content of the present application, those skilled in the art can make various modifications or modifications to the present application, and these equivalent forms also fall within the scope defined by the present application.

[0033] As Figures 1-10 shown, the automatic welding production line for carriage side plate of the present application comprises a spot welding platform 1 and a conveying line 2, the spot welding platform 1 is arranged upstream of the conveying line 2, and the conveying line 2 has a plurality of welding positions 3. The welding position 3 is provided with a welding manipulator 81 to perform full welding treatment on the spot-welded carriage side plate. Generally, two welding manipulators 81 are used at the same welding position 3 to complete full coverage of the carriage side plate. According to our calculation of working hours, the time for full welding operation of the double welding manipulators 81 is about 2.4 times the positioning and spot welding time of the carriage side plate, so that one spot welding process is matched with three full welding processes, which can maximize the use of production materials and improve the overall welding processing efficiency.

[0034] A plurality of long holes 11 are linearly arranged on the spot welding platform 1, and the long holes 11 extend along the width direction of the spot welding platform 1. The spot welding platform 1 has a plurality of pressing tools for pressing and positioning the steel plate of the carriage side plate. The spot welding platform 1 is a platform fixed on the steel plate by tube spot welding, and the operator can complete the spot welding operation on the spot welding platform 1.

[0035] A first lifting seat 4 is arranged in the spot welding platform 1, and a plurality of lifting rollers 41 are rotatably arranged on the first lifting seat 4, and the lifting rollers 41 correspond to the long holes 11 one by one. Specifically, the first lifting seat 4 includes a first lifting hydraulic cylinder 42 and a plurality of first lifting sleeves 43, and a first lifting plate 44 is arranged at the top of the first lifting sleeves 43. The first lifting hydraulic cylinder 42 is a power mechanism for lifting, and the first lifting sleeves 43 are a supporting and limiting assembly for guiding the lifting of the first lifting plate 44. A plurality of rotating seats 45 are arranged on the first lifting plate 44, and the lifting rollers 41 are rotatably installed on the rotating seats 45 one by one. At least one of the lifting rollers 41 is a power roller. When the first lifting seat 4 is lifted, the lifting rollers 41 are exposed above the spot welding platform 1 after passing through the long holes 11, and at this time, the lifting rollers 41 are consistent with the conveying line 2 in height. Through the lifting of the lifting rollers 41, the carriage side plate after spot welding can be lifted to be conveyed to the conveying line 2 for transfer to the next process.

[0036] Specifically, in order to ensure the stable conveying of the lifting rollers 41 to the carriage side plate, the lifting rollers 41 close to the conveying line 2 are power rollers, and the power rollers are rubber rollers. The rubber rollers have large friction with the carriage side plate, and can stably convey the carriage side plate to the conveying line 2.

[0037] The conveying line 2 is a roller conveyor, and the conveying line 2 in the area of each welding position 3 is controlled in sections. Through the separate control of the conveying line 2 at each welding position 3, the energy consumption during the conveying of the carriage side plate can be reduced. At the same time, the transmission distance of the power mechanism can be reduced, and the load of the power mechanism can be reduced.

[0038] A cantilever frame 8 is arranged above the welding position 3, and a welding manipulator 81 is mounted at the bottom of the cantilever frame 8. In this embodiment, the welding manipulator 81 has two, and the two welding manipulators 81 are respectively located on both sides of the cantilever frame 8, so as to fully cover the length direction of the carriage side plate, thereby improving the efficiency of full welding of the carriage side plate weld.

[0039] The lifting frame 5 is vertically provided with a lifting sliding rail 51 and a lifting lead screw driving mechanism 52. The lifting arm 6 is slidingly arranged on the lifting sliding rail 51. Specifically, the lifting arm 6 has a sliding seat at the distal end, and a plurality of groups of sliding blocks matched with the lifting sliding rail 51 are arranged on the two sides of the sliding seat. The cooperation of the plurality of groups of sliding blocks and the lifting sliding rail 51 can ensure that the distal end of the lifting arm 6 is stably supported when subjected to force. A lead screw nut matched with the lead screw is arranged on the sliding seat, and the lifting lead screw driving mechanism 52 is driven by a servo motor, so that the lifting arm 6 can be stably lifted.

[0040] The lifting arm 6 is provided with an extension arm 61 at the front end, and the lifting arm 6 and the extension arm 61 have an extension hydraulic cylinder 62 therebetween. The extension arm 61 has a “Y” type structure. Specifically, the lifting arm 6 has a sliding chamber at the front end, and a plurality of limiting sliding grooves are arranged in the sliding chamber. A sliding pair 64 matched with the limiting sliding grooves is arranged on the extension arm 61. The bottom of the extension hydraulic cylinder 62 is matched with the sliding chamber, and the piston rod of the extension hydraulic cylinder 62 is fixedly connected to the distal end of the extension arm 61. The extension arm 61 can be driven to extend by the extension hydraulic cylinder 62. The extension of the extension arm 61 is used for positioning and clamping the two ends of the carriage side plate, so that the carriage side plate can be lifted by the lifting arm 6.

[0041] The extension arm 61 is provided with a “C” type clamping head 63 at the front end. The “Y” type bifurcated structure of the extension arm 61 can clamp the two ends of the carriage side plate respectively, so as to position the carriage side plate before full welding after spot welding.

[0042] Specifically, the front end of the clamping head 63 is a trapezoidal opening 631, and the rear end of the clamping head 63 is a butt joint groove 632 consistent with the thickness of the carriage side plate. The large opening end of the trapezoidal opening 631 faces the outside. When the extension arm 61 is extended to clamp the carriage side plate, the trapezoidal opening 631 can guide the positioning and grabbing of the carriage side plate, so that the side surface of the carriage side plate can be stably guided into the butt joint groove 632. More specifically, the clamping head 63 is provided with a clamping cylinder 65 at the top. The piston rod of the clamping cylinder 65 is exposed in the butt joint groove 632 through the top of the clamping head 63, and a clamping piece 66 is arranged at the front end of the piston rod of the clamping cylinder 65. The clamping piece 66 can be driven to press the carriage side plate by the extension action of the clamping cylinder 65, so as to ensure the stability of the positioning and welding of the carriage side plate.

[0043] Specifically, a second lifting seat 7 is arranged below the welding position 3, and a plurality of supporting rods 71 are arranged in an array on the top of the second lifting seat 7. When the second lifting seat 7 is lifted, the supporting rods 71 pass through the gap of the conveying line 2 to lift the side plate. The second lifting seat 7 comprises a second lifting hydraulic cylinder 72 and a plurality of second lifting sleeves 73. The second lifting sleeves 73 are provided with a second lifting plate 74 on the top, and the supporting rods 71 are arranged in an array on the top of the second lifting plate 74. The second lifting hydraulic cylinder 72 serves as a power mechanism for lifting the second lifting plate 74, and the second lifting sleeves 73 support and guide the lifting of the second lifting plate 74. Through the driving of the second lifting hydraulic cylinder 72, the second lifting plate 74 can be lifted, the supporting rods 71 pass through the gap between the conveying rollers on the conveying line 2 to lift the side plate of the carriage above, and then the stretching arm 61 is positioned and clamped on both sides of the side plate of the carriage.

[0044] A positioning frame 9 is arranged below the end of the welding position 3, a positioning plate 91 is slidably arranged on the positioning frame 9, and a lifting cylinder 92 is arranged on the positioning frame 9 to drive the lifting of the positioning plate 91. Specifically, the positioning frame 9 has a positioning slide rail, and the positioning plate 91 is slidably connected with the positioning slide rail through a sliding assembly. When the lifting cylinder 92 drives the positioning plate 91 to rise, the positioning plate 91 passes through the gap of the conveying line 2 to position the side plate. The positioning plate 91 is a hard limiting structure, and a limiting sensor is installed on the conveying line 2 on both sides of the end of the welding position 3 or on the positioning plate 91. When the side plate of the carriage abuts against the positioning plate 91, the positioning in the length direction is completed, and the conveying line 2 at this section stops running. After the side plate of the carriage is lifted by the supporting rods 71, the positioning and clamping of the side plate of the carriage on both sides are completed by the stretching arm 61.

[0045] The two lifting arms 6 are synchronously lifted. When the two lifting arms 6 lift the side plate of the carriage to the welding height, the distance between the side plate of the carriage and the conveying line 2 is greater than the height of a single side plate of the carriage. The side plate of the carriage is lifted to the welding position by the lifting arm 6, and then the side plate of the carriage is welded by the welding manipulator 81. After the side plate of the carriage is lifted to the welding position by the lifting arm 6, the distance between the side plate of the carriage and the top of the conveying line 2 is greater than the thickness of the side plate of the carriage, so that the subsequent side plate of the carriage can smoothly enter the next welding position 3 or the next process.

[0046] When the welding work of the carriage side plate is carried out, first, the materials such as steel plate and square tube are positioned and placed on the spot welding platform 1 by manual operation, and the operator holds the welding gun to complete the spot welding fixation between the square tube and the steel plate, and between the square tubes. Then, the first lifting seat 4 is controlled to rise by the foot-activated switch, and the carriage side plate after spot welding is transferred to the conveying line 2 by the lifting roller 41 for continuous conveying. Specifically, the conveying line 2 sequentially passes through the first welding position, the second welding position and the third welding position in order, and the conveying line 2 at the three welding positions 3 is the first control section, the second control section and the third control section respectively. When the first welding position is not used for full welding work of the carriage side plate, only the first control section works, and the second control section and the third control section do not work. When the carriage side plate triggers the positioning plate 91 at the first welding position, the second lifting seat 7 rises, the carriage side plate is lifted by the supporting rod 71, then the stretching arm 61 is stretched, the clamping head 63 clamps and positions the two sides of the carriage side plate, and then the lifting arm 6 lifts the carriage side plate to the welding height, the second lifting seat 7 is reset, and the full welding work of the carriage side plate is completed by the welding manipulator 81. When the first welding position is being used for full welding work and the second welding position is not being used for full welding work of the carriage side plate, the first control section and the second control section work, and the third control section does not work, at this time the carriage side plate passes through the first welding position and moves to the second welding position for welding work. When the first welding position and the second welding position are being used for full welding work and the third welding position is not being used for full welding work of the carriage side plate, the first control section, the second control section and the third control section all work, and the carriage side plate passes through the first welding position and the second welding position and moves to the third welding position for welding work. When the first welding position, the second welding position and the third welding position are all being used for full welding work, the first control section, the second control section and the third control section all stop running, and wait for the above welding positions to be idle before starting according to the above program.

[0047] After the full welding of the carriage side plate is completed, the second lifting seat 7 is lifted again, the lifting arm 6 is lowered, the stretching arm 61 is retracted, the carriage side plate after full welding is released, and the carriage side plate is driven by the supporting rod 71 to return to the conveying line, and the conveying line conveys the carriage side plate after full welding to the next process.

[0048] When the first welding position releases the carriage side plate after full welding, the first control section, the second control section and the third control section all work, when the second welding position releases the carriage side plate after full welding, the second control section and the third control section work, and the first control section does not work, when the third welding position releases the carriage side plate after full welding, only the third control section works, and the first control section and the second control section do not work. The release process of the full-welded carriage side plate of the device has higher priority than the conveying process of the carriage side plate after spot welding to the welding position.

Claims

1. An automated welding production line for side panels of a vehicle body, comprising a spot welding station (1) and a conveyor line (2), characterized in that: The spot welding platform (1) is arranged upstream of a conveying line (2), the conveying line (2) has a plurality of welding positions (3) thereon, a plurality of long holes (11) are linearly arranged on the spot welding platform (1), a first lifting seat (4) is arranged in the spot welding platform (1), a plurality of lifting rollers (41) are rotatably arranged on the first lifting seat (4), the lifting rollers (41) correspond to the long holes (11) one by one, at least one of the lifting rollers (41) is a power roller, when the first lifting seat (4) is lifted, the lifting rollers (41) are exposed above the spot welding platform (1) after passing through the long holes (11), and at this time, the lifting rollers (41) are consistent with the conveying line (2) in height, the conveying line (2) is a roller conveyor, a cantilever frame (8) is arranged above the welding position (3), a welding manipulator (81) is arranged on the cantilever frame (8), lifting frames (5) are arranged on both sides of the welding position (3), lifting slide rails (51) and lifting lead screw driving mechanisms (52) are vertically arranged on the lifting frames (5), lifting arms (6) are slidably arranged on the lifting slide rails (51), extension arms (61) are arranged at the front ends of the lifting arms (6), extension hydraulic cylinders (62) are arranged between the lifting arms (6) and the extension arms (61), the extension arms (61) are in a "Y" type structure, "C" type clamping heads (63) are arranged at the front ends of the extension arms (61), a second lifting seat (7) is arranged below the welding position (3), a plurality of support rods (71) are arranged in an array on the top of the second lifting seat (7), when the second lifting seat (7) is lifted, the support rods (71) pass through the gap of the conveying line (2) to lift the side plates, positioning frames (9) are arranged below the ends of the welding position (3), positioning plates (91) are slidably arranged on the positioning frames (9), lifting cylinders (92) are arranged on the positioning frames (9) for driving the positioning plates (91) to lift, when the lifting cylinders (92) drive the positioning plates (91) to lift, the positioning plates (91) pass through the gap of the conveying line (2) to position the side plates.

2. An automated welding line for vehicle body side panels according to claim 1, characterized in that: The first lifting seat (4) comprises first lifting hydraulic cylinders (42) and a plurality of first lifting sleeves (43), first lifting plates (44) are arranged at the top of the first lifting sleeves (43), a plurality of pairs of rotating seats (45) are arranged on the first lifting plates (44), and the lifting rollers (41) are arranged on the rotating seats (45) one by one.

3. An automated welding line for vehicle body side panels according to claim 2, characterized in that: The lifting rollers (41) close to the conveying line (2) are power rollers, and the power rollers are rubber rollers.

4. An automated welding line for vehicle body side panels according to claim 1, characterized in that: The second lifting seat (7) comprises second lifting hydraulic cylinders (72) and a plurality of second lifting sleeves (73), second lifting plates (74) are arranged at the top of the second lifting sleeves (73), and the support rods (71) are arranged in an array at the top of the second lifting plates (74).

5. An automated welding line for vehicle body side panels according to claim 1, characterized in that: The front end of the lifting arm (6) has a sliding chamber, a plurality of limiting sliding grooves are arranged in the sliding chamber, a sliding pair (64) matched with the limiting sliding grooves is arranged on the extension arm (61), the bottom of the extension hydraulic cylinder (62) is matched with the sliding chamber, and the front end of the piston rod of the extension hydraulic cylinder (62) is fixedly connected with the end of the extension arm (61).

6. An automated welding line for truck bed side panels according to claim 1, characterized in that: The front end of the clamping head (63) is a trapezoidal opening (631), and the rear end of the clamping head (63) is a butt joint groove (632) matched with the thickness of the carriage side plate.

7. An automated welding line for vehicle body side panels according to claim 6, characterized in that: A clamping cylinder (65) is arranged on the top of the clamping head (63), the piston rod of the clamping cylinder (65) is exposed in the butt joint groove (632) through the top of the clamping head (63), and a clamping piece (66) is arranged at the front end of the piston rod of the clamping cylinder (65).

8. An automated welding line for side panels of railway cars according to any one of claims 1-7, characterized in that: The lifting arms (6) on both sides are synchronously lifted, and when the two lifting arms (6) lift the carriage side plate to the welding height, the distance between the carriage side plate and the conveying line (2) is greater than the height of a single carriage side plate.

9. An automated welding line for side panels of railway cars according to any one of claims 1-7, characterized in that: The conveying line (2) in the area where each welding position (3) is located is controlled in sections.

Images