Multi-point positioning crossbeam welding fixture

Abstract

The utility model discloses a plurality of point position locating crossbeam welding fixture, including component fixed clamp, the component fixed clamp includes base, and the base top is fixedly connected with mainboard through bolt, and the rear side top of mainboard is rotatably connected with the lower extreme of upper clamping seat through pin shaft, the rear side of mainboard still rotatably connected with clamping pneumatic cylinder, and the output shaft end of clamping pneumatic cylinder still rotatably connected with the rear end of upper clamping seat through pin shaft, and the action of clamping pneumatic cylinder can drive the front end opening and closing of upper clamping seat, thereby realizes the compression of crossbeam, the left side of mainboard still is equipped with movable positioning pin mounting seat through bolt, the movable positioning pin mounting seat includes first mounting plate and second mounting plate who set up mutually perpendicularly, the utility model discloses adopt the cooperative drive of multiple pneumatic cylinders, and control first, second positioning pin acts simultaneously from different directions, and accurately inserts workpiece original hole position, realizes the multiple point position cooperative positioning of complex crossbeam, and greatly improves the group precision.

Description

Technical Field

[0001] This utility model relates to the field of welding fixtures, specifically a multi-point positioning beam welding fixture. Background Technology

[0002] The front crossbeam of a car is located in the engine compartment at the front of the vehicle and connects parallel to the longitudinal beams of the body. Its main function is to support and connect various components of the car, such as the bumper and radiator. In the event of a collision, the front crossbeam can effectively disperse the impact force, protecting the safety of the occupants and other vital components.

[0003] For example, patent CN219818607U discloses a welding fixture for an automotive crossbeam assembly, including a drive box, a support plate, a rotating plate, and clamping components. The support plate is symmetrically arranged on the top of the drive box. This solution uses multiple sets of clamping components to change the installation position on the rotating plate, and sliding blocks slide on the column, thereby clamping and fixing different models of automotive crossbeams. This utility model relates to the field of welding fixture technology, specifically providing a welding fixture for an automotive crossbeam assembly.

[0004] The aforementioned patent uses a second starting motor to drive a reciprocating lead screw to rotate, which in turn drives a moving block to move back and forth, thereby driving a fan to move back and forth and blowing air onto the car crossbeam, thus quickly cooling the car crossbeam; however, the disadvantage of the aforementioned patent is that it has few positioning points, resulting in poor fixing effect for crossbeams with complex structures.

[0005] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a multi-point positioning beam welding fixture to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A multi-point positioning beam welding fixture includes a component fixing fixture. The component fixing fixture includes a base, with a main board bolted to the top of the base. The rear top of the main board is rotatably connected to the lower end of an upper clamping seat via a pin. A clamping cylinder is also rotatably connected to the rear of the main board. The output shaft of the clamping cylinder is rotatably connected to the rear end of the upper clamping seat via a pin. The action of the clamping cylinder can drive the front end of the upper clamping seat to open and close, thereby clamping the beam. A movable positioning pin mounting seat is bolted to the left side of the main board. The movable positioning pin mounting seat includes a first mounting plate and a second mounting plate arranged perpendicularly to each other. The first mounting plate is connected to the main board via a first rotating connecting bolt and a first adjusting screw. A first positioning cylinder is also fixedly mounted on the side of the first mounting plate via a first cylinder mounting seat, and a first positioning pin is fixedly mounted on the output shaft of the first positioning cylinder. A second positioning cylinder mounting seat and a top plate are also fixedly mounted on the front end of the second mounting plate. A second positioning cylinder is fixedly mounted on the bottom of the second positioning cylinder mounting seat, and a positioning pin lifting plate is fixedly mounted on the output shaft of the second positioning cylinder. A positioning pin mounting plate is fixedly mounted on the left end of the positioning pin lifting plate, and second positioning pins are fixedly mounted on the top left and right sides of the positioning pin mounting plate via bolts.

[0009] Furthermore, a plurality of upper clamping blocks are fixedly installed at the bottom front end of the upper clamping seat by bolts; a plurality of lower clamping pads are fixedly installed at the top front end of the main board by bolts, and the upper clamping blocks and the lower clamping pads are set in a one-to-one correspondence.

[0010] Furthermore, the top front end of the first mounting plate is rotatably connected to the side wall of the motherboard via a first rotating connecting bolt, and an arc-shaped adjustment hole is also provided at the bottom of the first mounting plate; wherein the first adjustment screw passes through the adjustment hole and is fixedly connected to the motherboard.

[0011] Furthermore, two guide shafts are fixedly installed between the second positioning cylinder mounting base and the top plate, and the positioning pin lifting plate is slidably connected to the guide shafts through a linear bearing.

[0012] Furthermore, the second locating pin is fixedly mounted on the top of the locating pin mounting arm by bolts, and the locating pin mounting arm is fixedly mounted on the locating pin mounting plate by bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By using multi-cylinder coordinated drive, the first and second positioning pins are controlled to move simultaneously from different directions, accurately inserting into the original holes of the workpiece, realizing multi-point coordinated positioning of complex crossbeams, which greatly improves the assembly accuracy.

[0015] The movable locating pin mounting base has a unique design. By loosening the adjusting screw, it can rotate around the shaft, allowing the cutting angle of the locating pin to be freely adjusted within a certain angle. It can flexibly adapt to the hole positions on different workpieces and has strong versatility.

[0016] The second positioning pin uses a lifting mechanism consisting of a guide shaft and a linear bearing, which ensures the smoothness and accuracy of its vertical movement, effectively prevents jamming, and guarantees the repeatability and reliability of the positioning action. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a multi-point positioning beam welding fixture.

[0018] Figure 2 This is a front view of a multi-point positioning beam welding fixture.

[0019] Figure 3 This is a side view of a multi-point positioning beam welding fixture.

[0020] Figure 4 This is a top view of a multi-point positioning beam welding fixture.

[0021] Figure 5 This is a schematic diagram of the movable positioning pin mounting seat in a multi-point positioning beam welding fixture. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] Please see Figure 1-5A multi-point positioning beam welding fixture includes a component fixing fixture 100. The component fixing fixture 100 includes a base 101. A main board 102 is fixedly connected to the top of the base 101 by bolts. The rear top of the main board 102 is rotatably connected to the lower end of the upper clamping seat 103 by a pin. A clamping cylinder 104 is also rotatably connected to the rear side of the main board 102. The output shaft end of the clamping cylinder 104 is rotatably connected to the rear end of the upper clamping seat 103 by a pin. The action of the clamping cylinder 104 can drive the front end of the upper clamping seat 103 to open and close, thereby achieving the clamping of the beam.

[0024] The front bottom of the upper clamping seat 103 is fixedly installed with several upper clamping pressure blocks 106 by bolts;

[0025] The front end of the motherboard 102 is fixedly mounted with several lower clamping pads 105 by bolts, and the upper clamping pressure block 106 is set in a one-to-one correspondence with the lower clamping pads 105.

[0026] When the crossbeam is clamped, the components of the crossbeam to be processed are placed on the lower clamping pad 105. The action of the clamping cylinder 104 drives the front end of the upper clamping seat 103 to close, and the upper clamping pressure block 106 presses on the top of the crossbeam.

[0027] Meanwhile, since the upper clamping pressure block 106 and the lower clamping pad 105 are both fixed by bolts in this solution, the upper clamping pressure block 106 and the lower clamping pad 105 of different sizes can be replaced according to different shapes of crossbeams to meet the clamping requirements of crossbeams of different specifications.

[0028] In this design, a movable positioning pin mounting base 200 is also bolted to the left side of the mainboard 102; the movable positioning pin mounting base 200 includes a first mounting plate 201 and a second mounting plate 202 arranged perpendicularly to each other; wherein the first mounting plate 202 is connected to the mainboard 102 by a first rotating connecting bolt 202 and a first adjusting screw 205.

[0029] The top front end of the first mounting plate 202 is rotatably connected to the side wall of the main board 102 via the first rotating connecting bolt 203. At the same time, an arc-shaped adjustment waist hole 204 is also provided at the bottom of the first mounting plate 202. The first adjusting screw 205 passes through the adjustment waist hole 204 and is fixedly connected to the main board 102.

[0030] In this solution, by loosening the first adjusting screw 205, the movable positioning pin mounting seat 200 can rotate relative to the main board 102 within a certain angle, with the first rotating connecting bolt 202 as the axis. After adjusting to the appropriate angle, the position of the movable positioning pin mounting seat 200 relative to the main board 102 is fixed by tightening the first adjusting screw 205.

[0031] Meanwhile, in this solution, the side of the first mounting plate 201 is also fixedly mounted with a first positioning cylinder 210 via a first cylinder mounting seat 210, and a first positioning pin 211 is fixedly mounted on the output shaft of the first positioning cylinder 210.

[0032] The front end of the second mounting plate 202 is also fixedly mounted with a second positioning cylinder mounting seat 220 and a top plate 230. The bottom of the second positioning cylinder mounting seat 220 is fixedly mounted with a second positioning cylinder 221. The output shaft of the second positioning cylinder 221 is fixedly mounted with a positioning pin lifting plate 222.

[0033] Two guide shafts 231 are also fixedly installed between the second positioning cylinder mounting base 220 and the top plate 230, and the positioning pin lifting plate 222 is slidably connected to the guide shafts 231 through the linear bearing 232;

[0034] The left end of the positioning pin lifting plate 222 is fixedly installed with a positioning pin mounting plate 223, and the top left and right sides of the positioning pin mounting plate 223 are fixedly installed with second positioning pins 224 by bolts.

[0035] In this solution, the second positioning pin 224 is fixedly mounted on the top of the positioning pin mounting arm 225 by bolts, and the positioning pin mounting arm 225 is fixedly mounted on the positioning pin mounting plate 223 by bolts.

[0036] In use, the crossbeam to be welded is placed on the lower clamping pad 105.

[0037] Then the second positioning cylinder 210 drives the first positioning pin 211 to rise, and the second positioning cylinder 221 drives the second positioning pin 224 to rise and insert into the original through hole of the crossbeam.

[0038] Finally, the action of the clamping cylinder 104 drives the front end of the upper clamping seat 103 to close, and the upper clamping pressure block 106 presses against the top of the crossbeam.

[0039] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A multi-point positioning beam welding fixture, characterized in that, The system includes a component fixing fixture, which comprises a base. A main board is bolted to the top of the base, and the rear top of the main board is rotatably connected to the lower end of an upper clamping seat via a pin. A clamping cylinder is also rotatably connected to the rear of the main board, and the output shaft of the clamping cylinder is rotatably connected to the rear end of the upper clamping seat via a pin. The action of the clamping cylinder can drive the front end of the upper clamping seat to open and close, thereby clamping the crossbeam. A movable positioning pin mounting seat is bolted to the left side of the main board. The movable positioning pin mounting seat includes a first mounting plate and a second mounting plate arranged perpendicularly to each other. The first mounting plate passes through... The first mounting plate is connected to the main board via a first rotating connecting bolt and a first adjusting screw. A first positioning cylinder is also fixedly mounted on the side of the first mounting plate via a first cylinder mounting seat. A first positioning pin is fixedly mounted on the output shaft of the first positioning cylinder. A second positioning cylinder mounting seat and a top plate are also fixedly mounted on the front end of the second mounting plate. A second positioning cylinder is fixedly mounted on the bottom of the second positioning cylinder mounting seat. A positioning pin lifting plate is fixedly mounted on the output shaft of the second positioning cylinder. A positioning pin mounting plate is fixedly mounted on the left end of the positioning pin lifting plate. Second positioning pins are fixedly mounted on the top left and right sides of the positioning pin mounting plate via bolts.

2. The multi-point positioning beam welding fixture according to claim 1, characterized in that, The front bottom of the upper clamping seat is fixedly installed with several upper clamping pressure blocks by bolts; the front top of the main board is fixedly installed with several lower clamping pads by bolts, and the upper clamping pressure blocks and the lower clamping pads are set in a one-to-one correspondence.

3. The multi-point positioning beam welding fixture according to claim 1, characterized in that, The top front end of the first mounting plate is rotatably connected to the side wall of the motherboard via a first rotating connecting bolt. At the same time, an arc-shaped adjustment hole is also provided at the bottom of the first mounting plate; wherein the first adjustment screw passes through the adjustment hole and is fixedly connected to the motherboard.

4. The multi-point positioning beam welding fixture according to claim 1, characterized in that, Two guide shafts are also fixedly installed between the second positioning cylinder mounting base and the top plate, and the positioning pin lifting plate is slidably connected to the guide shafts through a linear bearing.

5. The multi-point positioning beam welding fixture according to claim 1, characterized in that, The second locating pin is fixedly installed on the top of the locating pin mounting arm by bolts, and the locating pin mounting arm is fixedly installed on the locating pin mounting plate by bolts.

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