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CN-122007775-A - Positioning tool for automatic welding of guardrail plates

CN122007775ACN 122007775 ACN122007775 ACN 122007775ACN-122007775-A

Abstract

The invention provides a positioning tool for automatic welding of a guardrail plate, and belongs to the technical field of guardrail plate processing. The welding device comprises a welding table, wherein a movable frame is arranged at the top of the welding table in a sliding manner, a welding machine is arranged at the output end of the movable frame, a positioning mechanism for supporting a guardrail plate is arranged at the top of the welding table, the positioning mechanism comprises a supporting table, the supporting table is detachably arranged at the top of the welding table, a profiling joint surface matched with the outline of a trough is adopted at the top of a top supporting block through configuration of the supporting mechanism, the supporting contact area is effectively improved, and the top supporting block is gradually converted into a rigid supporting state under the action of welding pressure by utilizing the nonlinear rigidity characteristic of a disc spring group, so that the sinking trend of the trough of the waveform guardrail plate is effectively counteracted, the whole-course stable support of the trough area is realized, the constant distance between a welding gun and a plate is ensured, the full penetration of welding heat into the plate is ensured, and the stability of the welding process is improved.

Inventors

  • ZHANG TIECHENG
  • QIAN JIANYONG
  • YIN XIN

Assignees

  • 山东冠县众安交通工程有限公司

Dates

Publication Date
20260512
Application Date
20260415

Claims (10)

  1. 1. The positioning tool for automatic welding of the guardrail plates comprises a welding table (1), wherein a movable frame (2) is arranged at the top of the welding table (1) in a sliding manner, and a welding machine (3) is arranged at the output end of the movable frame (2), and the positioning tool is characterized in that a positioning mechanism (4) for supporting the guardrail plates is arranged at the top of the welding table (1); The positioning mechanism (4) comprises: Supporting bench (41), supporting bench (41) demountable installation is at the top of welding bench (1), recess (43) are seted up to one side surface of supporting bench (41), one side surface fixedly connected with motor (45) that recess (43) were kept away from to supporting bench (41), the output fixedly connected with transmission shaft (46) of motor (45), the inner wall fixedly connected with first fixed axle (44) of supporting bench (41), the top fixedly connected with backing plate (42) of supporting bench (41), the output of motor (45) is provided with adjusting part (49) that are used for carrying out centering adjustment to the guardrail plate, first sliding tray (47) and second sliding tray (48) are seted up to the top surface of supporting bench (41), one end that supporting bench (41) are close to welding machine (3) is provided with supporting mechanism (5) that are used for supporting the guardrail plate trough, one end that supporting bench (41) are close to supporting mechanism (5) is provided with and are used for exerting pushing down mechanism (6) of pushing down to guardrail plate trough top.
  2. 2. The positioning tool for automatic welding of guardrail plates according to claim 1, wherein the adjusting component (49) comprises a first sliding frame (491), the first sliding frame (491) is movably sleeved on the outer surface of the transmission shaft (46), one side inner wall of the first sliding frame (491), which is far away from the transmission shaft (46), is movably sleeved on the outer surface of the first fixed shaft (44), a sliding plate (493) is arranged at the top of the first sliding frame (491), the sliding plate (493) is in sliding connection with the inner wall of the first sliding groove (47), a pull rod (492) is rotatably connected with the inner wall of the first sliding frame (491) through a rotating shaft, and one end, which is far away from the first sliding frame (491), of the pull rod (492) is rotatably connected with the sliding plate (493).
  3. 3. The positioning tool for automatic welding of the guardrail plate according to claim 2, wherein one end of the sliding plate (493) close to the guardrail plate is fixedly connected with a supporting plate (494), the supporting plate (494) is slidably connected with the inner wall of the second sliding groove (48), one side inner wall of the sliding plate (493) close to the supporting plate (494) is rotatably connected with a turnover plate (495) through a rotating shaft, one side outer surface of the turnover plate (495) close to the guardrail plate is fixedly connected with a buffer pad (496), and the buffer pad (496) is in contact with the outer surface of the guardrail plate.
  4. 4. The positioning tool for automatic welding of the guardrail plates according to claim 3, wherein the outer wall of the overturning plate (495) is fixedly connected with a connecting shaft (497), the connecting shaft (497) is slidably connected with the inner wall of the sliding plate (493), a first spring (498) is movably sleeved on the outer surface of the connecting shaft (497), the first spring (498) is fixedly connected between the overturning plate (495) and the sliding plate (493), and the first spring (498) is used for applying extrusion force of the overturning plate (495) to the side edges of the guardrail plates.
  5. 5. The positioning tool for automatic welding of the guardrail plates according to claim 1, wherein the supporting mechanism (5) comprises a fixed block (501), a top supporting block (504) is movably inserted at the top of the fixed block (501), the outer surface of the top supporting block (504) is matched with the bottom of the guardrail plates and is used for supporting the valley bottom of the guardrail plates, a disc spring group (502) is fixedly connected to the bottom of the fixed block (501), and a wedge block (503) is fixedly connected to the bottom of the disc spring group (502).
  6. 6. The positioning tool for automatic welding of the guardrail plates according to claim 5, wherein a second sliding frame (505) is arranged outside the wedge-shaped block (503), the second sliding frame (505) is provided with an inclined plane matched with the inclined plane of the wedge-shaped block (503) and is used for jacking the fixed block (501) through inclined plane matching, a second spring (509) is fixedly connected to one side outer wall of the second sliding frame (505), and one end, far away from the second sliding frame (505), of the second spring (509) is fixedly connected with the inner wall of the supporting table (41).
  7. 7. The positioning tool for automatic welding of the guardrail plates according to claim 6, wherein a second fixed shaft (506) is fixedly connected to one end of the second sliding frame (505) far away from the second spring (509), and the second fixed shaft (506) is slidably connected to the inner wall of the supporting table (41).
  8. 8. The positioning tool for automatic welding of the guardrail plates according to claim 7, wherein a first threaded rod (507) is rotatably connected to the middle position of the second sliding frame (505), a nut (508) is movably sleeved on the outer surface of one end of the first threaded rod (507) far away from the second sliding frame (505), and the nut (508) is used for adjusting the sliding stroke of the second sliding frame (505) and limiting the descending height of the fixed block (501).
  9. 9. The positioning tool for automatic welding of the guardrail plates according to claim 1, wherein the pressing mechanism (6) comprises a third sliding frame (61), the bottom of the third sliding frame (61) is in sliding connection with the inner wall of the groove (43), the inner wall of the top of the third sliding frame (61) is rotatably connected with a second threaded rod (62), and an adjusting frame (63) is movably sleeved on the outer surface of the second threaded rod (62).
  10. 10. The positioning tool for automatic welding of the guardrail plates according to claim 9, wherein the inner wall of the adjusting frame (63) is slidably connected with a stress frame (64), a pressure head (65) is fixedly connected with the bottom end of the stress frame (64), a third spring (66) is arranged between the stress frame (64) and the pressure head (65), two ends of the third spring (66) are fixedly connected with the stress frame (64) and the pressure head (65) respectively, and the third spring (66) is used for absorbing vibration generated in the welding operation process of the guardrail plates.

Description

Positioning tool for automatic welding of guardrail plates Technical Field The invention relates to the technical field of guardrail plate processing, in particular to a positioning tool for automatic welding of guardrail plates. Background The guardrail plate is used as a core component of the road traffic safety facility, and is generally of a wave plate structure, and the cross section of the guardrail plate is in a continuous wave crest and wave trough alternate form so as to improve the structural strength and the energy absorption capacity. In the prior art, aiming at welding operation of the waveform guardrail plates, a positioning tool commonly adopted in the prior art mainly comprises a plane supporting seat, a V-shaped block or a simple pressing plate structure, and when the welding tool is operated, the waveform plates are placed on a supporting surface, and a pressing force is applied from the upper side by using an air cylinder or a manual clamp to realize clamping and positioning of workpieces. In summary, when the waveform guardrail plate is automatically welded, the welding gun is suspended in the air and is not supported in the trough region, so that the welding pressure directly acts on the weak structural part, the elastic sinking of the guardrail plate is easy to cause, the distance between the welding gun and the plate is instantaneously increased due to the sinking of the workpiece, and the effective penetration of the welding heat cannot be realized, so that the stability of the waveform guardrail plate in the welding process is reduced. Therefore, the application provides a positioning tool for automatic welding of the guardrail plate, which meets the requirements. Disclosure of Invention The invention aims to solve the problems and provide a positioning tool for automatic welding of guardrail plates, when positioning operation is performed on the guardrail plates, the guardrail plates are firstly placed on backing plates, a transmission shaft is driven by a motor, a first sliding frame moves towards a welding side, further sliding plates on two sides are pulled by a pull rod to synchronously retract, a turnover plate is driven to contact with the side edges of the guardrail plates through buffering cushions, corrugated plates with different specifications are adaptively clamped under the action of a first spring to complete centering positioning, then a third sliding frame is horizontally moved and locked according to the trough position, a second threaded rod is rotated, an adjusting frame drives a pressing head to press down, and continuous elastic pressing force is provided by the third spring. Simultaneously, according to trough degree of depth rotatory nut, make first threaded rod drive second carriage horizontal displacement, through inclined plane jacking wedge and dish spring group, make the profile modeling face flexible contact trough bottom of jack-up piece to change into rigid support under welding pressure, when carrying out welding operation, the welding machine is along with moving the frame horizontal migration and lift and weld, in this process, pushing down the mechanism and absorbing vibration through spring deformation, supporting mechanism provides stable bottom support, and then ensures the welding quality of guardrail board, has solved the problem that mentions in the background art. In order to solve the technical problems, the invention provides the following technical scheme: The utility model provides an automatic welding of guardrail board is with location frock, includes the welding bench, the top slip of welding bench is provided with the removal frame, the output of removing the frame is provided with the welding machine, the top of welding bench is provided with the positioning mechanism that is used for supporting the guardrail board. The positioning mechanism comprises a supporting table, the supporting table is detachably mounted at the top of the welding table, a groove is formed in the outer surface of one side of the supporting table, a motor is fixedly connected to the outer surface of one side, away from the groove, of the supporting table, the output end of the motor is fixedly connected with a transmission shaft, the inner wall of the supporting table is fixedly connected with a first fixed shaft, the top of the supporting table is fixedly connected with a backing plate, the upper surface of the backing plate is contacted with the bottom of the guardrail plate and used for providing plane support for the guardrail plate, an adjusting component used for centering and adjusting the guardrail plate is arranged at the output end of the motor, a first sliding groove and a second sliding groove are formed in the outer surface of the top of the supporting table, a supporting mechanism used for supporting the guardrail plate trough is arranged at one end, close to the supporting mechanism, of the supporting table, and a pressing mechanism used for a