A welding fixture convenient for clamping rear crossbeam

Abstract

The utility model provides a welding fixture for clamping a rear cross beam, which relates to the technical field of automobile parts processing equipment, and comprises: a workbench, wherein two first fixing frames are arranged on the top of the workbench, and the two first fixing frames are distributed in a left-right symmetrical manner; two second fixing frames are arranged on the top of the workbench, and the second fixing frames are located between the two first fixing frames; an adjustment frame is arranged above the second fixing frame, wherein the positioning frame is slidably matched with the limiting sliding groove through a limiting sliding block, and can drive the clamping rod to laterally position the rear cross beam by utilizing the rebound pulling effect of a tension spring, and the upper and lower clamping actions and the lateral positioning actions of the workpiece are combined together to save the trouble of step-by-step operation, effectively improve the welding efficiency of the workpiece, and solve the problem that when the existing automobile rear cross beam welding fixture is in use, the upper and lower clamping actions and the lateral positioning actions of the rear cross beam need to be coordinated and performed step by step, which makes the operation more complicated and inconvenient, resulting in poor welding efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing equipment, in particular to a welding fixture that is convenient for clamping a rear crossbeam. Background Art

[0002] The automobile frame is a frame-type structure connected to the front and rear axles of the automobile, and is the base of the automobile. During the automobile production process, the automobile frame is formed by welding between the crossbeams and longitudinal beams of the automobile, and the rear crossbeam welding fixture is one of the important tooling for automobile frame welding.

[0003] When the existing automobile rear beam welding fixture is in use, the upper and lower clamping actions and the lateral positioning actions of the rear beam need to be coordinated and performed step by step, which is cumbersome and inconvenient to operate, resulting in poor welding efficiency. In addition, insufficient space is reserved at the bottom of the rear beam, which affects the welding operation at the bottom and reduces the welding accuracy. Utility Model Content

[0004] The disclosed embodiment relates to a welding fixture that is convenient for clamping a rear crossbeam, wherein a positioning frame slides together with a limiting slide groove through a limiting slider, and utilizes the rebound pulling effect of a tension spring to drive a clamping rod to laterally position the rear crossbeam. By combining the upper and lower clamping actions and the lateral positioning actions of the workpiece, the trouble of step-by-step operation is eliminated, and the welding efficiency of the workpiece is effectively improved.

[0005] The utility model provides a welding fixture for clamping a rear crossbeam, which specifically comprises: a workbench, wherein two first fixing frames are arranged on the top of the workbench, and the two first fixing frames are distributed in a left-right symmetrical manner; two second fixing frames are arranged on the top of the workbench, and the second fixing frames are located between the two first fixing frames; an adjustment frame is arranged above the second fixing frame; a positioning frame is arranged on one side of the adjustment frame; limit frames are arranged on the left and right sides of the second fixing frame, and the two limit frames are distributed in a symmetrical manner; a support block is arranged on the limit frame; four universal wheels are arranged at the bottom of the workbench, and the four universal wheels are distributed in a rectangular array manner.

[0006] In at least some embodiments, a lower limit piece is provided on the first fixing frame, an upper limit piece is provided on the top of the first fixing frame, and the upper limit piece corresponds to the lower limit piece, a connecting piece is provided on one side of the first fixing frame, and a positioning pin is provided on the top of the connecting piece.

[0007] In at least some embodiments, a support frame is provided on the second fixed frame, a cylinder is provided on one side of the support frame, and connecting ears are provided on one side of the cylinder and at the top of the telescopic rod of the cylinder, and the two connecting ears are rotatably connected to the support frame and the adjustment frame respectively through pins.

[0008] In at least some embodiments, a limiting sleeve is provided on the support frame, a damping sleeve is provided inside the limiting sleeve, an adjusting rod is rotatably mounted on the damping sleeve, and an active bevel gear is provided at the end of the adjusting rod.

[0009] In at least some embodiments, the adjusting frame is provided with a connecting frame, and the connecting frame is rotatably connected to the supporting frame through a pin shaft, the adjusting frame is provided with a mounting seat, a clamping plate is provided at the bottom end of the mounting seat, a limiting round rod is provided on the mounting seat, a tension spring is mounted on the limiting round rod, and a limiting slide groove is provided on the mounting seat.

[0010] In at least some embodiments, a limiting slider is provided on the top of the positioning frame, a clamping rod is provided on the bottom of the positioning frame, the limiting round rod slides through the positioning frame, and the two ends of the tension spring are respectively connected to the positioning frame and the mounting seat, and the positioning frame is slidably connected to the limiting slide groove through the limiting slider.

[0011] In at least some embodiments, the limit frame is provided with a limit groove, bearing seats are provided at the opposite outer ends of the two limit frames, and a rotating shaft is rotatably installed between the two bearing seats, and the rotating shaft passes through the limit sleeve, and two reverse threads are provided on the outer circumference of the rotating shaft, and the two reverse threads are distributed in a symmetrical manner, and the reverse threads correspond to the position of the limit groove, and a driven bevel gear is provided in the middle position of the rotating shaft, the driven bevel gear is located in the limit sleeve, and the driven bevel gear is meshed and connected with the driving bevel gear.

[0012] In at least some embodiments, an adjusting slider is provided at the bottom of the support block, and a threaded sleeve is provided at the bottom end of the adjusting slider. The support block is slidably connected to the limiting groove of the limiting frame through the adjusting slider, and the threaded sleeve is slidably mounted on the reverse thread of the rotating shaft rod through a thread.

[0013] The utility model provides a welding fixture which is convenient for clamping a rear crossbeam and has the following beneficial effects:

[0014] The utility model is powered by a cylinder, which can drive the adjusting frame to make circular motion with the pin shaft of the connecting frame as the axis. The rear cross beam is fixedly clamped by the clamping plate and the limit sleeve frame cooperating with each other up and down. At the same time, the positioning frame slides with the limit slide groove through the limit slide block, and utilizes the rebound pulling effect of the tension spring to drive the clamping rod to laterally position the rear cross beam. By combining the upper and lower clamping actions and the lateral positioning actions of the workpiece, the trouble of step-by-step operation is eliminated, and the welding efficiency of the workpiece is effectively improved.

[0015] In addition, by turning the knob at the end of the rotating shaft and utilizing the meshing transmission of the driven bevel gear and the active bevel gear, the rotating shaft can be driven to rotate, and the two support blocks can be driven to slide along the limiting through grooves at the same time. By adjusting the position of the support blocks, the support height of the rear cross beam can be controlled to ensure the welding space at the bottom. This can better meet the welding processing requirements and has a more reasonable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0017] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0018] In the attached picture:

[0019] Figure 1 The overall axial viewing angle structure schematic diagram of the present application is shown;

[0020] Figure 2 A schematic diagram of the structure of the first fixing frame of the present application is shown;

[0021] Figure 3 A schematic diagram of the structure of the second fixing frame, the adjusting frame, the positioning frame, the limiting frame and the supporting block of the present application is shown;

[0022] Figure 4 A schematic diagram of the structure of the adjustment frame and the positioning frame in the exploded state of the present application is shown;

[0023] Figure 5 A schematic diagram of the structure of the limit frame and the support block of the present application is shown;

[0024] Figure 6 This application shows Figure 5 Schematic diagram of the explosion state structure.

[0025] List of reference numerals:

[0026] 1. Workbench; 2. First fixed frame; 201. Lower limiter; 202. Upper limiter; 203. Connector; 204. Positioning pin; 3. Second fixed frame; 301. Support frame; 302. Cylinder; 303. Connecting ears; 304. Limiting sleeve; 305. Damping sleeve; 306. Adjusting rod; 307. Active bevel gear; 4. Adjusting frame; 401. Connecting frame; 402. Mounting seat; 4 03, clamping plate; 404, limiting round rod; 405, tension spring; 406, limiting slide groove; 5, positioning frame; 501, limiting slider; 502, clamping rod; 6, limiting frame; 601, limiting through groove; 602, bearing seat; 603, rotating shaft; 604, reverse thread; 605, driven bevel gear; 7, support block; 701, adjusting slider; 702, threaded sleeve; 8, universal wheel. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1: Please refer to Figures 1 to 6 :

[0029] The utility model proposes a welding fixture for clamping a rear crossbeam, comprising: a workbench 1, wherein two first fixing frames 2 are arranged on the top of the workbench 1, and the two first fixing frames 2 are distributed in a left-right symmetrical manner; two second fixing frames 3 are arranged on the top of the workbench 1, and the second fixing frames 3 are located between the two first fixing frames 2; an adjusting frame 4 is arranged above the second fixing frames 3; a positioning frame 5 is arranged on one side of the adjusting frame 4; limiting frames 6 are arranged on the left and right sides of the second fixing frames 3, and the two limiting frames 6 are distributed in a symmetrical manner; a supporting block 7 is arranged on the limiting frame 6; four universal wheels 8 are arranged at the bottom of the workbench 1, and the four universal wheels 8 are distributed in a rectangular array manner;

[0030] A lower limit member 201 is disposed on the first fixing frame 2 , an upper limit member 202 is disposed on the top of the first fixing frame 2 , and the upper limit member 202 corresponds to the lower limit member 201 , a connecting member 203 is disposed on one side of the first fixing frame 2 , and a positioning pin 204 is disposed on the top of the connecting member 203 .

[0031] In the present disclosure, Figure 3 and Figure 4 As shown, a support frame 301 is provided on the second fixed frame 3, a cylinder 302 is provided on one side of the support frame 301, a connecting double ear 303 is provided on one side of the cylinder 302 and on the top of the telescopic rod of the cylinder 302, and the two connecting double ears 303 are rotatably connected to the support frame 301 and the adjustment frame 4 respectively through a pin shaft;

[0032] The adjusting frame 4 is provided with a connecting frame 401, and the connecting frame 401 is rotatably connected with the supporting frame 301 through a pin shaft, the adjusting frame 4 is provided with a mounting seat 402, a clamping plate 403 is provided at the bottom end of the mounting seat 402, a limiting round rod 404 is provided on the mounting seat 402, a tension spring 405 is sleeved on the limiting round rod 404, and a limiting slide groove 406 is provided on the mounting seat 402;

[0033] A limiting slider 501 is provided on the top of the positioning frame 5, and a clamping rod 502 is provided on the bottom of the positioning frame 5. The limiting round rod 404 slides through the positioning frame 5, and the two ends of the tension spring 405 are respectively connected to the positioning frame 5 and the mounting seat 402, and the positioning frame 5 is slidably connected with the limiting slide groove 406 through the limiting slider 501. In the utility model, the cylinder 302 provides power, which can drive the adjusting frame 4 to make an arc motion with the pin shaft of the connecting frame 401 as the axis, and the rear beam is fixedly clamped by the clamping plate 403 and the limiting sleeve 304 cooperating with each other up and down. At the same time, the positioning frame 5 slides with the limiting slide groove 406 through the limiting slider 501, and utilizes the rebound pulling effect of the tension spring 405 to drive the clamping rod 502 to position the rear beam laterally.

[0034] Embodiment 2, based on embodiment 1, as Figure 5 and Figure 6 As shown, a limiting sleeve 304 is provided on the support frame 301, a damping sleeve 305 is provided inside the limiting sleeve 304, an adjusting rod 306 is rotatably mounted on the damping sleeve 305, and an active bevel gear 307 is provided at the end of the adjusting rod 306;

[0035] The limiting frame 6 is provided with a limiting through groove 601, and two relative outer ends of the limiting frames 6 are provided with bearing seats 602, and a rotating shaft 603 is rotatably installed between the two bearing seats 602, and the rotating shaft 603 passes through the limiting sleeve 304, and the outer circumferential surface of the rotating shaft 603 is provided with two reverse threads 604, and the two reverse threads 604 are distributed in a symmetrical manner, and the reverse threads 604 correspond to the positions of the limiting through groove 601, and a driven bevel gear 605 is provided in the middle position of the rotating shaft 603, and the driven bevel gear 605 is located in the limiting sleeve 304, and the driven bevel gear 605 is meshed and connected with the active bevel gear 307;

[0036] An adjusting slider 701 is provided at the bottom of the support block 7, and a threaded sleeve 702 is provided at the bottom end of the adjusting slider 701. The support block 7 is slidably connected to the limiting groove 601 of the limiting frame 6 through the adjusting slider 701, and the threaded sleeve 702 is slidably sleeved on the reverse thread 604 of the rotating shaft 603 by means of a thread. By rotating the knob at the end of the adjusting rotating shaft 603 and utilizing the meshing transmission of the driven bevel gear 605 and the active bevel gear 307, the rotating shaft 603 can be driven to rotate, and the two support blocks 7 can be driven to slide along the limiting groove 601 at the same time. By adjusting the position of the support block 7, the support height of the rear beam is controlled to ensure the welding space at its bottom.

[0037] The working principle of this embodiment: when in use, the cylinder 302 provides power to drive the adjusting frame 4 to make circular motion with the pin shaft of the connecting frame 401 as the axis, and the rear cross beam is fixedly clamped by the clamping plate 403 and the limiting sleeve 304 cooperating with each other up and down, and at the same time, the positioning frame 5 slides with the limiting slide groove 406 through the limiting slider 501, and utilizes the rebound pulling effect of the tension spring 405 to drive the clamping rod 502 to laterally position the rear cross beam; by rotating and adjusting the knob at the end of the rotating shaft rod 603, the driven bevel gear 605 and the active bevel gear 307 are engaged and driven, and the rotating shaft rod 603 can be driven to rotate, and the two support blocks 7 can be driven to slide along the limiting through groove 601 at the same time. By adjusting the position of the support block 7, the support height of the rear cross beam is controlled to ensure the welding space at its bottom.

[0038] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A welding fixture for clamping a rear crossbeam, characterized in that: include: A workbench, wherein two first fixing frames are arranged on the top of the workbench, and the two first fixing frames are distributed in a left-right symmetrical manner; two second fixing frames are arranged on the top of the workbench, and the second fixing frames are located between the two first fixing frames; an adjustment frame is arranged above the second fixing frame; a positioning frame is arranged on one side of the adjustment frame; limit frames are arranged on the left and right sides of the second fixing frame, and the two limit frames are distributed in a symmetrical manner; a support block is arranged on the limit frame; four universal wheels are arranged at the bottom of the workbench, and the four universal wheels are distributed in a rectangular array.

2. A welding fixture for clamping a rear crossbeam according to claim 1, characterized in that: The first fixing frame is provided with a lower limit piece, the top of the first fixing frame is provided with an upper limit piece, and the upper limit piece corresponds to the lower limit piece, one side of the first fixing frame is provided with a connecting piece, and the top of the connecting piece is provided with a positioning pin.

3. The welding fixture for clamping the rear crossbeam according to claim 1 is characterized in that: The second fixing frame is provided with a supporting frame, a cylinder is provided on one side of the supporting frame, one side of the cylinder and the top of the telescopic rod of the cylinder are provided with connecting ears, and the two connecting ears are rotatably connected to the supporting frame and the adjusting frame respectively through pins.

4. A welding fixture for clamping a rear crossbeam according to claim 3, characterized in that: The support frame is provided with a limit sleeve frame, a damping sleeve is arranged in the limit sleeve frame, an adjusting rod is rotatably mounted on the damping sleeve, and an active bevel gear is arranged at the end of the adjusting rod.

5. The welding fixture for clamping the rear cross beam according to claim 1 is characterized in that: The adjusting frame is provided with a connecting frame, and the connecting frame is rotatably connected to the supporting frame through a pin shaft, the adjusting frame is provided with a mounting seat, a clamping plate is provided at the bottom end of the mounting seat, a limiting round rod is provided on the mounting seat, a tension spring is sleeved on the limiting round rod, and a limiting slide groove is provided on the mounting seat.

6. The welding fixture for clamping the rear cross beam according to claim 1, characterized in that: A limiting slider is provided on the top of the positioning frame, a clamping rod is provided on the bottom of the positioning frame, the limiting round rod slides through the positioning frame, and both ends of the tension spring are respectively connected to the positioning frame and the mounting seat, and the positioning frame is slidably connected to the limiting sliding groove through the limiting slider.

7. The welding fixture for clamping the rear cross beam according to claim 1, characterized in that: The limit frame is provided with a limit through groove, and bearing seats are provided at the opposite outer ends of the two limit frames, and a rotating shaft is rotatably installed between the two bearing seats, and the rotating shaft passes through the limit sleeve, and two reverse threads are provided on the outer circumference of the rotating shaft, and the two reverse threads are distributed in a symmetrical manner, and the reverse threads correspond to the position of the limit through groove, and a driven bevel gear is provided in the middle position of the rotating shaft, the driven bevel gear is located in the limit sleeve, and the driven bevel gear is meshed and connected with the driving bevel gear.

8. The welding fixture for clamping the rear cross beam according to claim 1, characterized in that: An adjusting slider is provided at the bottom of the support block, and a threaded sleeve is provided at the bottom end of the adjusting slider. The support block is slidably connected to the limiting groove of the limiting frame through the adjusting slider, and the threaded sleeve is slidably sleeved on the reverse thread of the rotating shaft rod through a thread.

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