Welding, positioning and supporting clamp for cross beam of automobile frame

Abstract

The invention discloses an automobile frame cross beam welding positioning supporting clamp and belongs to the technical field of welding positioning machining. The welding device comprises a base, two mounting columns are fixedly connected to the top of the base, a welding assembly is fixedly mounted at the ends, close to each other, of the two mounting columns, a moving plate is slidably connected to the interior of the base in a penetrating mode, and a grinding mechanism is arranged at the top of the moving plate, so that when welding positioning is carried out, the welding assembly is fixedly mounted on the base. The welding surfaces of the two cross beams are contacted and rubbed, and a positioning mechanism is arranged on the side wall of the mounting column, so that the cross beams are positioned during welding positioning, and whether the cross beams deviate or not is observed. A driving motor outputs to drive a screw rod to rotate, so that a moving plate and a polishing mechanism drive a cross beam to move through a first clamping assembly, then a circular ring drives a convex block to slide along an inclined rotating groove, a rotating cylinder drives the cross beam to rotate synchronously, two welding faces rub against each other, and therefore impurities such as an oxide layer and oil dirt are removed, the welding faces are cleaner, and the strength and compactness of welding seams are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding positioning and processing, and particularly relates to a welding positioning and supporting fixture for an automobile frame cross beam. Background Art

[0002] All components of an automobile are directly or indirectly installed on the vehicle frame. The vehicle frame is a basic component that bears loads. It bears both the static load of the automobile and the dynamic load during driving. Therefore, the vehicle frame is one of the key assemblies that affect the service life of the automobile. An automobile frame generally consists of longitudinal beams and cross beams, and its forms are mainly side beam type and center beam type. Especially in application scenarios where support, load bearing, or force transmission is required, the main function of the cross beam assembly is to provide structural support and stability, ensure the torsional stiffness of the vehicle frame and bear longitudinal loads, and ensure that the equipment can maintain an accurate working state during operation.

[0003] In the prior art, when welding an automobile frame cross beam, a fixture is required to clamp and fix the cross beam. Most of them directly clamp and fix a single position of the cross beam through two clamping components. Since the cross beam is relatively long, clamping at a single position is not stable enough. Since there may be impurities such as oil stains, rust, scale, and moisture on the welding surface. These impurities will affect the docking process of the cross beam, resulting in slight offsets of the cross beam. The characteristics of slight offsets are not intuitive enough, and operators need to perform precise measurement and adjustment, which will affect work efficiency. If welding is directly carried out without adjustment, defects such as pores and slag inclusions will appear in the weld, thus affecting the welding accuracy and quality. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems that pores, slag inclusions, etc. appear in the weld due to small impurities on the welding surface of the cross beam in the prior art, and to propose a welding positioning and supporting fixture for an automobile frame cross beam.

[0005] To achieve the above purpose, the present invention adopts the following technical scheme: A welding positioning and supporting fixture for an automobile frame cross beam, including a base, two mounting columns are fixedly connected to the top of the base, a welding assembly is fixedly installed at the close ends of the two mounting columns, and a moving plate is slidably connected through the interior of the base;

[0006] A grinding mechanism is arranged on the top of the moving plate to make the welding surfaces of the two cross beams contact and rub during welding positioning;

[0007] A positioning mechanism is arranged on the side wall of the mounting column to position the cross beam during welding positioning, so as to observe whether the cross beam is offset;

[0008] A side plate is fixedly connected to the top of the base, and a cleaning mechanism is arranged on the side wall of the side plate to pre-clean the welding slag remaining in the welding area before welding positioning.

[0009] Furthermore, the grinding mechanism includes a rotating cylinder, and a movable plate is slidably connected to the outer wall of the rotating cylinder. The bottom of the movable plate is slidably connected to the top of the base. An inclined rotating groove is formed in the outer wall of the rotating cylinder. A convex block is fixedly connected to the inner wall of the movable plate, and the outer wall of the convex block is slidably connected to the inner wall of the inclined rotating groove. A circular ring is rotatably connected to the side wall of the movable plate, and a first tension spring is fixedly connected to one side of the circular ring away from the movable plate. A first extrusion rod is fixedly connected to the outer wall of the movable plate, and a second extrusion rod is also fixedly connected to the outer wall of the movable plate.

[0010] Furthermore, a first clamping assembly is fixedly installed at one end of the rotating cylinder. The bottom of the movable plate is fixedly connected to the top of the moving plate. The end of the first tension spring away from the circular ring is fixedly connected to the side wall of the first clamping assembly.

[0011] Furthermore, the positioning mechanism includes a fixed plate, and a sliding rod is slidably connected through the side wall of the fixed plate. A limiting plate is fixedly connected to the outer wall of the sliding rod, and a first spring is fixedly connected to the side wall of the limiting plate. One end of the sliding rod is rotatably connected to a positioning rod, and a connecting plate is fixedly connected to the side wall of the positioning rod. One end of the connecting plate away from the positioning rod is fixedly connected to a connecting rod, and a positioning plate is slidably connected to the outer wall of the connecting rod. A second spring is fixedly connected to the top of the positioning plate. A positioning groove is formed in the top of the sliding rod. A sliding groove is formed through the side wall of the mounting column, and a limiting rod is slidably connected to the inner wall of the sliding groove. A third spring is fixedly connected to the top of the limiting rod.

[0012] Furthermore, the side wall of the fixed plate is fixedly connected to the side wall of the mounting column. The side wall of the limiting plate corresponds to the side wall of the limiting rod. The end of the first spring away from the limiting plate is fixedly connected to the side wall of the fixed plate. The bottom of the positioning plate corresponds to the inner wall of the positioning groove. The end of the second spring away from the positioning plate is fixedly connected to the bottom of the connecting plate. The end of the first extrusion rod away from the movable plate corresponds to the inclined surface at the end of the limiting rod.

[0013] Furthermore, the cleaning mechanism includes a fixed rod. One end of the fixed rod is fixedly connected to the side wall of the side plate, and a slider is slidably connected to the outer wall of the fixed rod. Two sliding plates are slidably connected to the inner wall of the slider. Fourth springs are fixedly connected to the sides of the two sliding plates facing away from each other, and the ends of the fourth springs away from the sliding plates are fixedly connected to the inner wall of the slider. A second tension spring is fixedly connected to the side wall of the fixed rod. A fixed block is fixedly connected to the side wall of the side plate. A rotating shaft is rotatably connected to the side wall of the fixed rod, and a cleaning roller is fixedly installed on the outer wall of the rotating shaft. A gear is fixedly connected to the outer wall of the rotating shaft. A rack is fixedly connected to the side wall of the side plate, and the inner wall of the teeth of the gear is matched and engaged with the inner wall of the rack.

[0014] Furthermore, the end of the fixed rod away from the side plate is fixedly connected to the side wall of the mounting column. The end of the sliding plate away from the fixed block corresponds to the end of the second pressing rod. The end of the fixed block away from the side plate is obliquely opposite to the end of the sliding plate. The end of the second tension spring away from the fixed rod is fixedly connected to the side wall of the mounting column. The end of the rack away from the side plate is fixedly connected to the side wall of the mounting column.

[0015] Furthermore, a sewage discharge groove is penetrated and opened at the top of the base, and a collection box is fixedly installed on the side wall of the base. The inside of the collection box is communicated with the inner wall of the sewage discharge groove.

[0016] Furthermore, a motor is fixedly installed at the bottom of the base, and a screw rod is fixedly connected to the output shaft of the motor. The side wall of the moving plate is rotatably connected through a thread to the outer wall of the screw rod. A second clamping assembly is fixedly installed on the side wall of the side plate.

[0017] Compared with the prior art, the above solution has the following beneficial effects:

[0018] 1. By driving the output of the driving motor to drive the screw rod to rotate synchronously, the moving plate and the grinding mechanism drive the cross beam to move through the first clamping assembly. Then, the welding surfaces of the two cross beams will be squeezed together. After that, the circular ring will drive the convex block to slide along the inner wall of the inclined rotating groove, causing the rotating cylinder to rotate and driving the cross beam to rotate synchronously. At this time, since the welding surfaces of the two cross beams are squeezed and fitted together, the welding surfaces of the two cross beams will rub against each other after being squeezed and fitted, which can remove impurities such as oxide layers and oil stains on the welding surface, make the welding surface cleaner, and thus reduce defects such as pores, slag inclusions, and incomplete penetration in the weld after welding, improving the strength and tightness of the weld.

[0019] 2. The positioning rods of the two groups of positioning mechanisms are pressed against the side wall of the cross beam to further support and position the cross beam after docking. If the cross beam deflects, the positioning rod and the sliding rod will rotate relative to each other. During the rotation of the positioning rod, the connecting plate will be driven to rotate synchronously, and then the connecting plate will drive the positioning plate to displace synchronously through the connecting rod. During this process, the bottom of the positioning plate will slide along the inner wall of the positioning groove, and then the positioning plate will be squeezed and slide upward along the outer wall of the connecting rod, compressing the second spring. At this time, the top height of the positioning plate will be higher than the surface of the sliding rod, thereby observing that the positioning rod and the sliding rod are not perpendicular, so as to judge that the cross beam has deviated. By providing intuitive visual feedback, the operator can quickly judge the state of the cross beam, so as to discover and adjust the deviation in the first time, improving the accuracy of welding.

[0020] 3. When the cleaning roller moves, it rotates, so as to automatically clean and scrape the welding slag remaining on the surface of the base before each welding. Then the welding slag will move centrally into the sewage discharge groove, and then fall into the collection box through the inside of the sewage discharge groove. The collection box is designed to be detachably installed. After the welding work is completed, the collection box can be disassembled to centrally process the welding slag, so as to avoid excessive accumulation of welding slag on the top of the base, affecting the normal operation of the welding process, ensuring that the welding area is not blocked by sundries, reducing the time wasted due to the need to clean the area, and at the same time, the clean working environment helps to improve the operation efficiency of the equipment and avoid work interruption caused by welding slag blockage or accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the overall structural schematic diagram of the present invention;

[0022] Figure 2 is the overall structural sectional view of the present invention;

[0023] Figure 3 is the structural transmission schematic diagram of the welding assembly and the rotating cylinder of the present invention;

[0024] Figure 4 is the structural transmission schematic diagram of the rotating cylinder and the movable plate of the present invention;

[0025] Figure 5 is the structural transmission schematic diagram of the positioning rod and the limiting rod of the present invention;

[0026] Figure 6 is the structural connection schematic diagram of the sliding rod and the positioning plate of the present invention;

[0027] Figure 7 is the internal structural schematic diagram of the slider of the present invention;

[0028] Figure 8Structural transmission schematic diagram of the gear and rack proposed by the present invention.

[0029] The labels in the attached drawings are: 1, base; 2, mounting column; 3, welding assembly; 4, moving plate; 5, grinding mechanism; 6, positioning mechanism; 7, side plate; 8, cleaning mechanism; 9, chute; 10, sewage discharge groove; 11, collection box; 12, motor; 13, screw; 14, first clamping assembly; 15, second clamping assembly; 501, rotating cylinder; 502, movable plate; 503, inclined rotating groove; 504, convex block; 505, ring; 506, first tension spring; 507, first extrusion rod; 508, second extrusion rod; 601, fixing plate; 602, sliding rod; 603, limiting plate; 604, first spring; 605, positioning rod; 606, connecting plate; 607, connecting rod; 608, positioning plate; 609, second spring; 610, positioning groove; 611, limiting rod; 612, third spring; 801, fixing rod; 802, slider; 803, sliding plate; 804, fourth spring; 805, second tension spring; 806, fixing block; 807, rotating shaft; 808, cleaning roller; 809, gear; 810, rack. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "top surface", "bottom surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not require or imply any actual relationship, sequence or relative importance between these entities or operations.

[0032] Example 1, please refer to Figures 1 - 4, An automotive frame crossbeam welding positioning support fixture, including a base 1. Two mounting columns 2 are fixedly connected to the top of the base 1. A welding assembly 3 is fixedly installed at the close ends of the two mounting columns 2. A moving plate 4 is slidably connected through the interior of the base 1. A sewage discharge groove 10 is opened through the top of the base 1. And a collection box 11 is fixedly installed on the side wall of the base 1. The interior of the collection box 11 is communicated with the inner wall of the sewage discharge groove 10. A motor 12 is fixedly installed at the bottom of the base 1. And the output shaft of the motor 12 is fixedly connected to a screw rod 13. The side wall of the moving plate 4 is rotationally connected through a thread to the outer wall of the screw rod 13. A second clamping assembly 15 is fixedly installed on the side wall of the side plate 7;

[0033] Further, a grinding mechanism 5 is arranged on the top of the moving plate 4 to make the welding surfaces of the two crossbeams contact and rub during welding positioning. The grinding mechanism 5 includes a rotating cylinder 501. And a movable plate 502 is slidably connected to the outer wall of the rotating cylinder 501. The bottom of the movable plate 502 is slidably connected to the top of the base 1. An inclined rotating groove 503 is opened on the outer wall of the rotating cylinder 501. A convex block 504 is fixedly connected to the inner wall of the movable plate 502. And the outer wall of the convex block 504 is slidably connected to the inner wall of the inclined rotating groove 503. A circular ring 505 is rotatably connected to the side wall of the movable plate 502. And a first tension spring 506 is fixedly connected to the side away from the movable plate 502 of the circular ring 505. A first extrusion rod 507 is fixedly connected to the outer wall of the movable plate 502. And a second extrusion rod 508 is fixedly connected to the outer wall of the movable plate 502. A first clamping assembly 14 is fixedly installed at one end of the rotating cylinder 501. The bottom of the movable plate 502 is fixedly connected to the top of the moving plate 4. The end of the first tension spring 506 away from the circular ring 505 is fixedly connected to the side wall of the first clamping assembly 14;

[0034] More specifically, when welding the crossbeam, first place one of the crossbeams at the position of the side wall of the side plate 7, then control the second clamping assembly 15 to support and fix it. Then pass the other crossbeam through the interior of the first clamping assembly 14 and the rotating cylinder 501, and then control the first clamping assembly 14 to support and fix it. After that, it is necessary to dock the welding surfaces of the two crossbeams. By driving the motor 12 to output, then the output shaft of the motor 12 will drive the screw rod 13 to rotate synchronously, thereby driving the moving plate 4 to displace. At the same time, the moving plate 4 will drive the grinding mechanism 5 to move synchronously. Then the grinding mechanism 5 will drive the crossbeam to move synchronously through the first clamping assembly 14. At the same time, the movable plate 502 will drive the second extrusion rod 508 to insert into the interior of the mounting column 2, which can ensure that the movement process of the movable plate 502 will not deviate;

[0035] After the crossbeam moves to the designated position, the crossbeam will contact another crossbeam at this time, causing the welding surfaces of the two crossbeams to be pressed together. During the subsequent movement driven by the moving plate 4 to drive the movable plate 502, the first clamping assembly 14 and the crossbeam will not displace at this time. Then, the movable plate 502 will slide along the outer wall of the rotating cylinder 501, causing the first tension spring 506 to be stretched. At the same time, the circular ring 505 will drive the convex block 504 to slide along the inner wall of the inclined rotating groove 503. During this process, the rotating cylinder 501 will rotate, and at the same time, the rotating cylinder 501 will drive the crossbeam to rotate synchronously through the first clamping assembly 14. At this time, since the welding surfaces of the two crossbeams are pressed and fitted together, the welding surfaces of the two crossbeams will rub against each other after being pressed and fitted, which can remove impurities such as oxide layers and oil stains on the welding surface and make the welding surface cleaner.

[0036] Embodiment 2. Please refer to Figures 1 - 6 , on the basis of Embodiment 1, in this embodiment, a positioning mechanism 6 is provided on the side wall of the mounting column 2 to position the crossbeam during welding positioning, so as to observe whether the crossbeam is displaced. The positioning mechanism 6 includes a fixing plate 601, and a sliding rod 602 is slidably connected through the side wall of the fixing plate 601. A limiting plate 603 is fixedly connected to the outer wall of the sliding rod 602, and a first spring 604 is fixedly connected to the side wall of the limiting plate 603. One end of the sliding rod 602 is rotatably connected to a positioning rod 605, and a connecting plate 606 is fixedly connected to the side wall of the positioning rod 605. One end of the connecting plate 606 away from the positioning rod 605 is fixedly connected to a connecting rod 607, and a positioning plate 608 is slidably connected to the outer wall of the connecting rod 607. A second spring 609 is fixedly connected to the top of the positioning plate 608, and a positioning groove 610 is opened at the top of the sliding rod 602;

[0037] Furthermore, a sliding groove 9 is penetrated and opened on the side wall of the mounting column 2, and a limiting rod 611 is slidably connected to the inner wall of the sliding groove 9. A third spring 612 is fixedly connected to the top of the limiting rod 611. The side wall of the fixing plate 601 is fixedly connected to the side wall of the mounting column 2. The side wall of the limiting plate 603 corresponds to the side wall of the limiting rod 611. One end of the first spring 604 away from the limiting plate 603 is fixedly connected to the side wall of the fixing plate 601. The bottom of the positioning plate 608 corresponds to the inner wall of the positioning groove 610. One end of the second spring 609 away from the positioning plate 608 is fixedly connected to the bottom of the connecting plate 606. One end of the first pressing rod 507 away from the movable plate 502 corresponds to the inclined surface of the end of the limiting rod 611;

[0038] More specifically, when the movable plate 502 moves, it drives the first pressing rod 507 to move synchronously. Due to the elastic force of the third spring 612, the third spring 612 is located at the bottom of the chute 9. When the first pressing rod 507 contacts the limiting rod 611, during the subsequent movement of the first pressing rod 507, it presses against the inclined surface of the limiting rod 611. Then, after being pressed, the limiting rod 611 slides along the inner wall of the chute 9, and at the same time, the third spring 612 is compressed. After the movement of the movable plate 502 is completed, at this time, the entire first pressing rod 507 completely enters the inside of the chute 9, so that the limiting rod 611 slides to the top of the chute 9. During this process, the end of the limiting rod 611 disengages from the contact with the limiting plate 603. At this time, the limiting plate 603 is no longer limited by the limiting rod 611. Then, the first spring 604 releases its elastic force and drives the sliding rod 602 to slide out of the inside of the fixed plate 601, so that the sliding rod 602 drives the positioning rod 605 to press against the side surface of the cross beam;

[0039] The side wall of the positioning rod 605 is rotatably connected to the end of the sliding rod 602, so that the side wall of the positioning rod 605 can always fit against the side wall of the cross beam. By pressing the positioning rods 605 of the two groups of positioning mechanisms 6 against the side wall of the cross beam, the further supporting and positioning function after the docking of the cross beam is realized. If the cross beam is displaced, it will cause relative rotation between the positioning rod 605 and the sliding rod 602. During the rotation of the positioning rod 605, it drives the connecting plate 606 to rotate synchronously, and then the connecting plate 606 drives the positioning plate 608 to displace synchronously through the connecting rod 607. During this process, the bottom of the positioning plate 608 slides along the inner wall of the positioning groove 610, and then the positioning plate 608 is pressed and slides upward along the outer wall of the connecting rod 607, compressing the second spring 609. At this time, the top height of the positioning plate 608 is higher than the surface of the sliding rod 602. From this, it can be observed that the positioning rod 605 and the sliding rod 602 are not in a vertical state, so as to judge that the cross beam has deviated. If the cross beam has not deviated, due to the elastic force of the second spring 609, the bottom of the positioning plate 608 will always completely fit against the inner wall of the positioning groove 610, and its top height will not be higher than the surface of the sliding rod 602, thus ensuring that when the cross beam deviates, an intuitive visual feedback is provided, and the operator can quickly judge whether the cross beam has deviated.

[0040] Embodiment 3, please refer to Figures 1 - 8, on the basis of the second embodiment, in this embodiment, a side plate 7 is fixedly connected to the top of the base 1, and a cleaning mechanism 8 is arranged on the side wall of the side plate 7 to pre-clean the welding slag remaining in the welding area before welding positioning. The cleaning mechanism 8 includes a fixed rod 801. One end of the fixed rod 801 is fixedly connected to the side wall of the side plate 7, and a slider 802 is slidably connected to the outer wall of the fixed rod 801. Two sliding plates 803 are slidably connected to the inner wall of the slider 802. Fourth springs 804 are fixedly connected to the sides of the two sliding plates 803 away from each other, and the ends of the fourth springs 804 away from the sliding plates 803 are fixedly connected to the inner wall of the slider 802;

[0041] Further, a second tension spring 805 is fixedly connected to the side wall of the fixed rod 801, a fixed block 806 is fixedly connected to the side wall of the side plate 7, a rotating shaft 807 is rotatably connected to the side wall of the fixed rod 801, and a cleaning roller 808 is fixedly installed on the outer wall of the rotating shaft 807. A gear 809 is fixedly connected to the outer wall of the rotating shaft 807, a rack 810 is fixedly connected to the side wall of the side plate 7, and the inner wall of the tooth of the gear 809 is matched and engaged with the inner wall of the rack 810. The end of the fixed rod 801 away from the side plate 7 is fixedly connected to the side wall of the mounting column 2. The end of the sliding plate 803 away from the fixed block 806 corresponds to the end of the second pressing rod 508. The end of the fixed block 806 away from the side plate 7 is obliquely opposite to the end of the sliding plate 803. The end of the second tension spring 805 away from the fixed rod 801 is fixedly connected to the side wall of the mounting column 2. The end of the rack 810 away from the side plate 7 is fixedly connected to the side wall of the mounting column 2;

[0042] More specifically, during the movement of the movable plate 502, it will drive the second extrusion rod 508 to pass through the inside of the mounting column 2. During the subsequent movement, the second extrusion rod 508 will contact the end of the fourth spring 804 and then extrude it. Then, the fourth spring 804 will drive the slider 802 to slide along the outer wall of the fixed rod 801. At the same time, the slider 802 will also drive the cleaning roller 808 and the gear 809 to move synchronously through the rotating shaft 807. Since the gear 809 and the rack 810 are in a matching meshing state, during the movement of the gear 809, it will cause the gear 809 to rotate through the rack 810. Then, the gear 809 will drive the rotating shaft 807 and the cleaning roller 808 to rotate synchronously. Since the bottom of the cleaning roller 808 is in contact with the top of the base 1, by the cleaning roller 808 rotating during the movement, it can automatically clean and scrape the welding slag residues on the surface of the base 1 before each welding. Then, the welding slag will move centrally into the sewage trough 10 and then fall into the inside of the collection box 11 through the inside of the sewage trough 10. The collection box 11 is designed for detachable installation. After the welding work is completed, the collection box 11 can be detached to centrally process the welding slag, thereby preventing excessive welding slag from accumulating on the top of the base 1 and affecting the normal operation of the welding process. It can ensure that the welding area is not blocked by sundries, reduce the time wasted due to the need to clean the area, and at the same time, the clean working environment helps to improve the operation efficiency of the equipment.

[0043] The working principle of the present invention is as follows: When welding the cross beam, first, one of the cross beams needs to be placed at the side wall position of the side plate 7, and then it is supported and fixed by controlling the second clamping assembly 15. Then, the other cross beam is passed through the inside of the first clamping assembly 14 and the rotating cylinder 501, and then it is supported and fixed by controlling the first clamping assembly 14. After that, the driving motor 12 outputs, and then the output shaft of the motor 12 will drive the moving plate 4 to displace. At the same time, the moving plate 4 will drive the grinding mechanism 5 to move synchronously. Then, the grinding mechanism 5 will drive the cross beam to move synchronously through the first clamping assembly 14. After that, the welding surfaces of the two cross beams will be pressed together. During the subsequent movement of the moving plate 4 driving the movable plate 502, at this time, the first clamping assembly 14 and the cross beam will not displace. Then, the movable plate 502 will slide along the outer wall of the rotating cylinder 501, causing the first tension spring 506 to be stretched. At the same time, the circular ring 505 will drive the convex block 504 to slide along the inner wall of the inclined rotating groove 503. During this process, the rotating cylinder 501 rotates, driving the cross beam to rotate synchronously through the first clamping assembly 14. At this time, since the welding surfaces of the two cross beams are pressed and fitted together, the two welding surfaces can be rubbed against each other to remove impurities such as oxide layers and oil stains on the welding surfaces, making the welding surfaces cleaner;

[0044] When the movable plate 502 moves, the first extrusion rod 507 will be driven to move synchronously. Then, the first extrusion rod 507 will squeeze the inclined surface of the limiting rod 611 during the process. Then, when the movable plate 502 completes its movement, the first extrusion rod 507 will completely enter the interior of the slide groove 9. At this time, the end of the limiting rod 611 will be out of contact with the limiting plate 603 and will no longer be limited by the limiting rod 611. Then, the first spring 604 will drive the sliding rod 602 to slide, so that the sliding rod 602 drives the positioning rod 605 to be squeezed on the side of the beam.

[0045] The positioning rods 605 of the two sets of positioning mechanisms 6 are squeezed on the side walls of the beams to achieve further support and positioning after the beams are docked. If the beams deviate, the positioning rods 605 and the sliding rods 602 will rotate relative to each other. The positioning rods 605 will drive the connecting plate 606 to rotate synchronously during the rotation process, and then the connecting plate 606 will drive the positioning plate 608 to move synchronously through the connecting rod 607. In this process, the bottom of the positioning plate 608 will slide along the inner wall of the positioning groove 610, and then the positioning plate 608 will move along the connecting rod 607. The outer wall slides upward, and at this time the top height of the positioning plate 608 will be higher than the surface of the slide bar 602. It can be observed that the positioning rod 605 and the slide bar 602 are not in a vertical state, thereby judging that the beam has shifted. If the beam has not shifted, the elastic force of the second spring 609 will make the bottom of the positioning plate 608 always completely fit against the inner wall of the positioning groove 610, and its top height will not be higher than the surface of the slide bar 602, thereby ensuring that when the beam shifts, intuitive visual feedback is provided, and the operator can quickly judge whether the beam is shifted.

[0046] It should be noted that the various devices in this application are common devices in the market, and can be selected according to specific needs during specific use. The circuit connection relationship of each device is a simple series and parallel connection circuit. There is no innovation in the circuit connection part. Those skilled in the art can implement it relatively easily. It belongs to the existing technology and will not be elaborated on.

[0047] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. An automotive frame crossbeam welding positioning support fixture, comprising a base (1), characterized in that: Two mounting columns (2) are fixedly connected to the top of the base (1). A welding assembly (3) is fixedly installed at the adjacent ends of the two mounting columns (2). A moving plate (4) is slidably connected through the interior of the base (1). A grinding mechanism (5) is arranged on the top of the moving plate (4) to make the welding surfaces of the two cross beams contact and rub during welding positioning. A positioning mechanism (6) is arranged on the side wall of the mounting column (2) to position the cross beam during welding positioning, so as to observe whether the cross beam is displaced. A side plate (7) is fixedly connected to the top of the base (1), and a cleaning mechanism (8) is arranged on the side wall of the side plate (7) to clean the welding slag remaining in the welding area in advance before welding positioning.

2. The welding positioning support fixture for an automobile frame crossbeam according to claim 1, characterized in that, The grinding mechanism (5) includes a rotating cylinder (501). A movable plate (502) is slidably connected to the outer wall of the rotating cylinder (501). The bottom of the movable plate (502) is slidably connected to the top of the base (1). An inclined rotating groove (503) is formed on the outer wall of the rotating cylinder (501). A convex block (504) is fixedly connected to the inner wall of the movable plate (502), and the outer wall of the convex block (504) is slidably connected to the inner wall of the inclined rotating groove (503). A circular ring (505) is rotatably connected to the side wall of the movable plate (502), and a first tension spring (506) is fixedly connected to the side of the circular ring (505) away from the movable plate (502). A first extrusion rod (507) is fixedly connected to the outer wall of the movable plate (502), and a second extrusion rod (508) is also fixedly connected to the outer wall of the movable plate (502).

3. The welding positioning support fixture for the cross beam of an automobile frame according to claim 2, wherein A first clamping assembly (14) is fixedly installed at one end of the rotating cylinder (501). The bottom of the movable plate (502) is fixedly connected to the top of the moving plate (4). The end of the first tension spring (506) away from the circular ring (505) is fixedly connected to the side wall of the first clamping assembly (14).

4. The welding positioning support fixture for the cross beam of an automobile frame according to claim 3, characterized in that The positioning mechanism (6) includes a fixing plate (601). A sliding rod (602) is slidably connected through the side wall of the fixing plate (601). A limiting plate (603) is fixedly connected to the outer wall of the sliding rod (602), and a first spring (604) is fixedly connected to the side wall of the limiting plate (603). A positioning rod (605) is rotatably connected to one end of the sliding rod (602), and a connecting plate (606) is fixedly connected to the side wall of the positioning rod (605). A connecting rod (607) is fixedly connected to the end of the connecting plate (606) away from the positioning rod (605). A positioning plate (608) is slidably connected to the outer wall of the connecting rod (607). A second spring (609) is fixedly connected to the top of the positioning plate (608). A positioning groove (610) is formed on the top of the sliding rod (602). A sliding groove (9) is formed through the side wall of the mounting column (2), and a limiting rod (611) is slidably connected to the inner wall of the sliding groove (9). A third spring (612) is fixedly connected to the top of the limiting rod (611).

5. The welding positioning support fixture for an automobile frame crossbeam according to claim 4, characterized in that, The side wall of the fixed plate (601) is fixedly connected to the side wall of the mounting post (2). The side wall of the limiting plate (603) corresponds to the side wall of the limiting rod (611). One end of the first spring (604) away from the limiting plate (603) is fixedly connected to the side wall of the fixed plate (601). The bottom of the positioning plate (608) corresponds to the inner wall of the positioning groove (610). One end of the second spring (609) away from the positioning plate (608) is fixedly connected to the bottom of the connecting plate (606). One end of the first pressing rod (507) away from the movable plate (502) corresponds to the inclined surface at the end of the limiting rod (611).

6. The welding positioning support fixture for the cross beam of an automobile frame according to claim 5, characterized in that, The cleaning mechanism (8) includes a fixed rod (801). One end of the fixed rod (801) is fixedly connected to the side wall of the side plate (7). A slider (802) is slidably connected to the outer wall of the fixed rod (801). Two sliding plates (803) are slidably connected to the inner wall of the slider (802). Fourth springs (804) are fixedly connected to the sides of the two sliding plates (803) away from each other. One end of the fourth spring (804) away from the sliding plate (803) is fixedly connected to the inner wall of the slider (802). A second tension spring (805) is fixedly connected to the side wall of the fixed rod (801). A fixed block (806) is fixedly connected to the side wall of the side plate (7). A rotating shaft (807) is rotatably connected to the side wall of the fixed rod (801). A cleaning roller (808) is fixedly installed on the outer wall of the rotating shaft (807). A gear (809) is fixedly connected to the outer wall of the rotating shaft (807). A rack (810) is fixedly connected to the side wall of the side plate (7). The inner wall of the teeth of the gear (809) is matched and meshed with the inner wall of the rack (810).

7. The welding positioning support fixture for the cross beam of an automobile frame according to claim 6, characterized in that, One end of the fixed rod (801) away from the side plate (7) is fixedly connected to the side wall of the mounting post (2). One end of the sliding plate (803) away from the fixed block (806) corresponds to the end of the second pressing rod (508). One end of the fixed block (806) away from the side plate (7) corresponds to the inclined surface at the end of the sliding plate (803). One end of the second tension spring (805) away from the fixed rod (801) is fixedly connected to the side wall of the mounting post (2). One end of the rack (810) away from the side plate (7) is fixedly connected to the side wall of the mounting post (2).

8. The welding positioning and supporting fixture for the cross beam of an automobile frame according to claim 1, characterized in that, A sewage discharge groove (10) is opened through the top of the base (1). A collection box (11) is fixedly installed on the side wall of the base (1). The inside of the collection box (11) is communicated with the inner wall of the sewage discharge groove (10).

9. The welding positioning and supporting fixture for the cross beam of an automobile frame according to claim 1, characterized in that A motor (12) is fixedly installed at the bottom of the base (1). The output shaft of the motor (12) is fixedly connected to a screw rod (13). The side wall of the moving plate (4) is rotatably connected through the thread to the outer wall of the screw rod (13). A second clamping assembly (15) is fixedly installed on the side wall of the side plate (7).

Images