Pneumatic welding positioning device for longitudinal beam assembly

Abstract

The utility model provides a pneumatic welding positioning device for a longitudinal beam assembly, and relates to the technical field of automobile part welding. Five clamping assemblies are installed on the top of the welding supporting frame. Each clamping assembly is composed of a clamping support, a clamping air cylinder and a movable clamping piece. Four floating extension assemblies are installed on the top of the welding supporting frame. Each floating extension assembly is composed of a floating extension support, a floating extension air cylinder and a movable floating extension piece. The longitudinal beam is placed at the top of the clamping assembly; the stop block makes contact with the inclined face of the bottom of the longitudinal beam to achieve the effect of limiting the X axis of the longitudinal beam, the movable clamping piece makes contact with the top side of the longitudinal beam to achieve the effect of clamping and fixing the Z axis of the longitudinal beam, and a positioning pin arranged on the movable floating extending piece is inserted into a connecting hole machined in the bottom of the longitudinal beam to achieve the effect of positioning the Y axis of the longitudinal beam. It is guaranteed that the longitudinal beam does not displace in the production process, and therefore the longitudinal beam welding precision is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts welding technology, and in particular to a pneumatic welding positioning device for longitudinal beam assemblies. Background Technology

[0002] The chassis is the most important load-bearing component in a car, and the longitudinal beams of the chassis are one of the key parts. Therefore, the longitudinal beams play an important load-bearing role in a car. Side beam chassis, center beam chassis, and other types of car chassis all contain longitudinal beams. The longitudinal beams are usually stamped from low alloy steel plates, and the cross-sectional shape is generally channel-shaped, but some are made into Z-shaped or box-shaped cross-sections. In the manufacturing process of the longitudinal beams, the stamped low alloy steel plates need to be connected together by welding to form the required longitudinal beam assembly.

[0003] In traditional welding processes, vises and manual clamping tools are used to clamp parts. Clamping and positioning are very cumbersome and cannot guarantee the stability of the parts, making it inconvenient to weld the parts. Welding accuracy and consistency cannot be guaranteed, making it unsuitable for mass production. When welding parts in reverse, the welding posture of the workpiece also needs to be adjusted, which takes a long time and greatly affects welding efficiency. Utility Model Content

[0004] This disclosure relates to a pneumatic welding positioning device for longitudinal beam assemblies, which solves the problems of traditional welding processes where clamping parts with bench vises and manual clamping tools is cumbersome and cannot guarantee the stability of the parts, making welding inconvenient, failing to guarantee welding accuracy and consistency, and unsuitable for mass production. Furthermore, when welding parts in reverse, it is necessary to adjust the welding posture of the workpiece, which takes a long time and greatly affects welding efficiency.

[0005] This utility model provides a pneumatic welding positioning device for a longitudinal beam assembly, specifically including: a welding support frame; five clamping assemblies are installed on the top of the welding support frame, each clamping assembly consisting of a clamping bracket, a clamping cylinder, and a movable clamping element; four floating extension assemblies are installed on the top of the welding support frame, each floating extension assembly consisting of a floating extension bracket, a floating extension cylinder, and a movable floating extension element; and a longitudinal beam, which is placed on top of the clamping assemblies and in contact with the floating extension assemblies.

[0006] In at least some embodiments, the heights of the five clamping components differ according to the curvature of the longitudinal beam, and the heights of the four floating components differ according to the curvature of the longitudinal beam.

[0007] In at least some embodiments, the bottom of the clamping bracket is fixedly connected to the welding support frame, the cylinder body of the clamping cylinder is rotatably connected to the clamping bracket, the movable clamping member is rotatably connected to the clamping bracket, the piston rod of the clamping cylinder is rotatably connected to the movable clamping member, and the end of the movable clamping member is in contact with the top side of the longitudinal beam.

[0008] In at least some embodiments, the clamping bracket has two stops at the top, the top of the stops being inclined and bent, and the opposite sides of the bottom of the longitudinal beam contact the two stops. When the longitudinal beam is placed on top of the clamping assembly, the stops contact the bottom inclined surfaces of the longitudinal beam, which limits the X-axis of the longitudinal beam. The clamping cylinder drives the movable clamping member to rotate, so that the movable clamping member contacts the top side of the longitudinal beam, which clamps and fixes the Z-axis of the longitudinal beam.

[0009] In at least some embodiments, the floating support is fixedly connected to the welded support frame, the cylinder body of the floating cylinder is fixedly connected to the floating support, the piston rod of the floating cylinder is fixedly connected to the movable floating member, and the top of the movable floating member is in contact with the bottom side of the longitudinal beam.

[0010] In at least some embodiments, the movable floating member is provided with a positioning pin at the top, and the bottom of the longitudinal beam is machined with a connecting hole for installation and fixing. The positioning pin is inserted into the connecting hole, and the floating cylinder drives the movable floating member to move upward, so that the positioning pin provided with the movable floating member is inserted into the connecting hole machined at the bottom of the longitudinal beam, thereby achieving the effect of positioning the Y-axis of the longitudinal beam.

[0011] In at least some embodiments, the welding support frame is equipped with four casters at the bottom and four lifting rings at the top. The casters support the bottom of the welding support frame, facilitating the close-range movement and pushing of the pneumatic welding positioning device. The lifting device can also be connected to the lifting rings with a wire rope to achieve the lifting operation of the pneumatic welding positioning device.

[0012] This utility model provides a pneumatic welding positioning device for longitudinal beam assemblies, which has the following beneficial effects:

[0013] In use, when the longitudinal beam is placed on top of the clamping assembly, the stop block contacts the inclined surface at the bottom of the longitudinal beam, thus limiting the X-axis of the longitudinal beam. The clamping cylinder drives the movable clamping component to rotate, causing the movable clamping component to contact the top side of the longitudinal beam, thus clamping and fixing the longitudinal beam along the Z-axis. The floating cylinder drives the movable floating component to move upward, causing the positioning pin on the movable floating component to insert into the connecting hole machined at the bottom of the longitudinal beam, thus positioning the longitudinal beam along the Y-axis. By limiting the X, Y, and Z axes of the longitudinal beam, it is ensured that the longitudinal beam does not shift during the production process, thereby ensuring the welding accuracy of the longitudinal beam, significantly improving welding efficiency, and reducing the welding intensity for operators.

[0014] In addition, the bottom of the welding support frame is supported by casters, which facilitates the close-range movement and pushing of the pneumatic welding positioning device. The hoisting device can also be connected to the lifting ring with a wire rope to carry it, thus better meeting the needs of actual use.

[0015] Other advantages, objectives and features of this invention will be apparent in part from the description which follows, and in part from the understanding of those skilled in the art through study and practice of this invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0018] In the attached figure:

[0019] Figure 1 This paper shows a schematic diagram of the overall axonal structure of the pneumatic welding positioning device for the longitudinal beam assembly of this application;

[0020] Figure 2 A schematic diagram of the isometric structure of the welding support frame of this application is shown;

[0021] Figure 3 A schematic diagram of the axial structure of the clamping assembly of this application is shown;

[0022] Figure 4 A schematic diagram of the axial structure of the floating extension assembly of this application is shown;

[0023] Figure 5 A schematic diagram of the longitudinal beam axial side structure of this application is shown.

[0024] List of reference numerals

[0025] 1. Welded support frame; 101. Casters; 102. Lifting rings;

[0026] 2. Clamping assembly; 21. Clamping bracket; 2101. Stop block; 22. Clamping cylinder; 23. Movable clamping component;

[0027] 3. Floating extension assembly; 31. Floating extension bracket; 32. Floating extension cylinder; 33. Movable floating extension component; 3301. Positioning pin;

[0028] 4. Longitudinal beam; 401. Connecting hole. DETAILED DESCRIPTION

[0029] 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. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] Example 1: Please refer to Figures 1 to 5 :

[0031] This utility model proposes a pneumatic welding positioning device for a longitudinal beam assembly, comprising: a welding support frame 1; five clamping components 2 are mounted on the top of the welding support frame 1, each clamping component 2 consisting of a clamping bracket 21, a clamping cylinder 22, and a movable clamping element 23; four floating components 3 are mounted on the top of the welding support frame 1, each floating component 3 consisting of a floating bracket 31, a floating cylinder 32, and a movable floating element 33; a longitudinal beam 4, which is placed on top of the clamping components 2 and contacts the floating components 3; the heights of the five clamping components 2 and the four floating components 3 are different according to the curvature of the longitudinal beam 4; the bottom of the clamping bracket 21 is fixedly connected to the welding support frame 1, and the clamping cylinder 22... The cylinder body is rotatably connected to the clamping bracket 21, the movable clamping member 23 is rotatably connected to the clamping bracket 21, the piston rod of the clamping cylinder 22 is rotatably connected to the movable clamping member 23, and the end of the movable clamping member 23 contacts the top side of the longitudinal beam 4; the top of the clamping bracket 21 is provided with two stops 2101, the top of the stops 2101 is inclined and bent, and the opposite sides of the bottom of the longitudinal beam 4 contacts the two stops 2101. When the longitudinal beam 4 is placed on the top of the clamping assembly 2, the stops 2101 contact the bottom slope of the longitudinal beam 4, which has the effect of limiting the X-axis of the longitudinal beam 4. The clamping cylinder 22 drives the movable clamping member 23 to rotate, so that the movable clamping member 23 contacts the top side of the longitudinal beam 4, which has the effect of clamping and fixing the Z-axis of the longitudinal beam 4.

[0032] In this embodiment, the floating support 31 is fixedly connected to the welded support frame 1, the cylinder body of the floating cylinder 32 is fixedly connected to the floating support 31, the piston rod of the floating cylinder 32 is fixedly connected to the movable floating member 33, the top of the movable floating member 33 is in contact with the bottom side of the longitudinal beam 4; the top of the movable floating member 33 is provided with a positioning pin 3301, and the bottom of the longitudinal beam 4 is machined with a connecting hole 401 for installation and fixing, and the positioning pin 3301 is inserted into the connecting hole 401;

[0033] Using the above technical solution, the floating cylinder 32 drives the movable floating member 33 to move upward, so that the positioning pin 3301 provided on the movable floating member 33 is inserted into the connecting hole 401 machined at the bottom of the longitudinal beam 4, which plays a role in positioning the Y-axis of the longitudinal beam 4. By limiting the X-axis, Y-axis and Z-axis of the longitudinal beam 4, it is ensured that the longitudinal beam 4 does not move during the production process, thereby ensuring the welding accuracy of the longitudinal beam 4, greatly improving the welding efficiency and reducing the welding intensity of the operators.

[0034] In Example 2, based on Example 1, four casters 101 are installed at the bottom of the welding support frame 1, and four lifting rings 102 are installed at the top of the welding support frame 1.

[0035] By adopting the above technical solution, the bottom of the welding support frame 1 is supported by the casters 101, which facilitates the close-range movement and pushing of the pneumatic welding positioning device. The hoisting wire rope can also be connected to the hoisting ring 102 to realize the hoisting operation of the pneumatic welding positioning device, thus better meeting the actual use needs.

[0036] The working principle of this embodiment is as follows: First, when the longitudinal beam 4 is placed on top of the clamping assembly 2, the stop block 2101 contacts the inclined surface at the bottom of the longitudinal beam 4, which limits the X-axis of the longitudinal beam 4. The clamping cylinder 22 drives the movable clamping member 23 to rotate, so that the movable clamping member 23 contacts the top side of the longitudinal beam 4, which clamps and fixes the Z-axis of the longitudinal beam 4. Next, the floating cylinder 32 drives the movable floating member 33 to move upward, so that the positioning pin 3301 provided on the movable floating member 33 is inserted into the connecting hole 401 machined at the bottom of the longitudinal beam 4, which positions the Y-axis of the longitudinal beam 4. By limiting the X-axis, Y-axis and Z-axis of the longitudinal beam 4, it is ensured that the longitudinal beam 4 does not shift during the production process, thereby ensuring the welding accuracy of the longitudinal beam 4, and the welding operation can be performed on the longitudinal beam 4. The bottom of the welding support frame 1 is supported by the universal wheel 101, which facilitates the close-range movement and pushing of the pneumatic welding positioning device. The hoisting wire rope can also be connected to the lifting ring 102 to realize the hoisting operation of the pneumatic welding positioning device.

[0037] The following points should be noted in this article:

[0038] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0039] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0040] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. Pneumatic welding positioning device for longitudinal beam assembly, including: A welding support frame (1); characterized in that five clamping assemblies (2) are installed on the top of the welding support frame (1), and the clamping assemblies (2) are composed of a clamping bracket (21), a clamping cylinder (22) and a movable clamping member (23); four floating extension assemblies (3) are installed on the top of the welding support frame (1), and the floating extension assemblies (3) are composed of a floating extension bracket (31), a floating extension cylinder (32) and a movable floating extension member (33); a longitudinal beam (4), the longitudinal beam (4) is placed on the top of the clamping assembly (2), and the longitudinal beam (4) is in contact with the floating extension assembly (3).

2. The pneumatic welding positioning device for the longitudinal beam assembly according to claim 1, characterized in that: The heights of the five clamping assemblies (2) are different according to the curvature of the longitudinal beam (4), and the heights of the four floating extension assemblies (3) are different according to the curvature of the longitudinal beam (4).

3. The pneumatic welding positioning device for the longitudinal beam assembly according to claim 1, characterized in that: The bottom of the clamping bracket (21) is fixedly connected to the welding support frame (1), the cylinder body of the clamping cylinder (22) is rotatably connected to the clamping bracket (21), the movable clamping piece (23) is rotatably connected to the clamping bracket (21), the piston rod of the clamping cylinder (22) is rotatably connected to the movable clamping piece (23), and the end of the movable clamping piece (23) is in contact with the top side of the longitudinal beam (4).

4. The pneumatic welding positioning device for the longitudinal beam assembly according to claim 1, characterized in that: The top of the clamping bracket (21) is provided with two stoppers (2101), the top of the stoppers (2101) is in an inclined and bent shape, and the inclined surfaces on the opposite sides of the bottom of the longitudinal beam (4) are in contact with the two stoppers (2101).

5. The pneumatic welding positioning device for the longitudinal beam assembly according to claim 1, characterized in that: The floating support (31) is fixedly connected to the welding support frame (1), the cylinder body of the floating cylinder (32) is fixedly connected to the floating support (31), the piston rod of the floating cylinder (32) is fixedly connected to the movable floating member (33), and the top of the movable floating member (33) is in contact with the bottom side of the longitudinal beam (4).

6. The pneumatic welding positioning device for the longitudinal beam assembly according to claim 1, characterized in that: The top of the movable floating extension (33) is provided with a positioning pin (3301), and the bottom of the longitudinal beam (4) is processed with a connecting hole (401) for installation and fixing, and the positioning pin (3301) is inserted into the connecting hole (401).

7. The pneumatic welding positioning device for the longitudinal beam assembly according to claim 1, characterized in that: Four universal wheels (101) are installed at the bottom of the welding support frame (1), and four lifting rings (102) are installed at the top of the welding support frame (1).

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