Battery tray inner cavity repair welding tool clamp

Abstract

The utility model relates to a battery tray inner cavity repair welding tool clamp which comprises a base frame, a bottom plate positioning pin is arranged in the middle of the base frame, a battery tray supporting frame is arranged on the base frame, pressing mechanisms are sequentially arranged on the front portions, the middle portions and the rear portions of the left side and the right side of the base frame, and each pressing mechanism comprises a supporting seat and a pressing arm. A frame outer limiting block is installed on the supporting seat, a boundary beam limiting block is installed below the head of the pressing arm, a frame pressing block is installed below the middle of the pressing arm, supports are arranged on the front portion and the rear portion of the base frame respectively, and a frame outer limiting block is installed on the top of each support. Due to the adoption of the technical scheme, the bottom plate, on which a plurality of parts are welded, of the battery tray can be quickly and accurately positioned and clamped, workpiece displacement and deformation in the repair welding process of an inner cavity of the battery tray are avoided, and the welding efficiency and quality can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of welding fixtures, in particular to a battery tray inner cavity repair welding fixture. Background Art

[0002] In the production process of battery trays for new energy vehicles, due to the complex shape and structure of the workpiece, it is necessary to first perform frame welding, then carry out other processes, and then go back to perform inner cavity repair welding. There are many places for inner cavity repair welding, involving 54 welding points, and the total weld length reaches 1873mm. During welding, it is also necessary to overcome the stress caused by welding deformation. Therefore, special tooling and fixtures are needed to position and clamp the workpiece. Otherwise, it will be difficult to complete precise welding and the welding quality cannot be guaranteed. Only then can robots be used for repair welding. Summary of the invention

[0003] The utility model aims to provide a battery tray inner cavity repair welding fixture, aiming to solve the problem that when repairing the inner cavity of the tray, the workpiece positioning is difficult, the positioning is not accurate, and the welding quality cannot be guaranteed.

[0004] The technical solution adopted by the utility model is: a battery tray inner cavity repair welding fixture, including a base frame, the base frame is overall rectangular in shape, a bottom plate locating pin is arranged in the middle of the base frame, and a battery tray support frame is arranged on the base frame, the battery tray support frame includes a front "U"-shaped beam, a rear "U"-shaped beam, an "I"-shaped beam, a middle front beam, and a middle rear beam, the front "U"-shaped beam is connected to the "I"-shaped beam through the middle front beam, and the rear "U"-shaped beam is connected to the "I"-shaped beam through the middle rear beam, and a clamping mechanism is sequentially arranged on the front, middle and rear of the left and right sides of the base frame, the clamping mechanism includes a support seat and a pressure arm, a frame outer limiting block is installed on the support seat, a side beam limiting block is installed under the head of the pressure arm, and a frame pressure block is installed under the middle of the pressure arm, and supports are also provided at the front and rear of the base frame, and each of the supports is installed with a frame outer limiting block on the top.

[0005] A further technical solution of the utility model is: a "T"-shaped beam positioning bayonet is arranged on the front "U"-shaped beam to improve the positioning accuracy.

[0006] A further technical solution of the utility model is that a robot gripper avoidance opening is arranged on the battery tray support frame to facilitate the robot gripper to grasp the workpiece.

[0007] The beneficial effect of the utility model is that due to the adoption of the above-mentioned technical scheme, a battery tray inner cavity repair welding fixture of the utility model can quickly and accurately position and clamp a base plate of a battery tray with multiple components welded thereon, thereby avoiding displacement and deformation of the workpiece during the battery tray inner cavity repair welding process, and can effectively improve welding efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the overall structure of a battery tray inner cavity repair welding fixture described in the utility model;

[0009] Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A;

[0010] Figure 3 The utility model is a schematic diagram of the top view of the battery tray inner cavity repair welding fixture. DETAILED DESCRIPTION

[0011] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0012] Example:

[0013] like Figures 1 to 3 A battery tray inner cavity repair welding fixture shown in the figure comprises a base frame 1, the base frame 1 is generally rectangular in shape, a bottom plate locating pin 2 is arranged in the middle of the base frame, and the number of the locating pins is set to two. When the battery tray workpiece is loaded into the fixture, the bottom plate locating pin passes through the central locating hole on the bottom plate of the battery tray, and the battery tray workpiece is positioned on the battery tray support frame. A battery tray support frame 3 is arranged on the base frame, and the battery tray support frame 3 comprises a front "U"-shaped beam 31, a rear "U"-shaped beam 32, an "I"-shaped beam 33, a middle front beam 34, and a middle rear beam 35. The front "U"-shaped beam is connected to the "I"-shaped beam through the middle front beam, and the rear "U"-shaped beam is connected to the "I"-shaped beam through the middle front beam. The "I"-shaped beam is connected with the "I"-shaped beam through the middle and rear beam, and clamping mechanisms are arranged in sequence on the front, middle and rear parts of the left and right sides of the base frame, and the clamping mechanism is controlled by an electrical control system. The clamping mechanism comprises a support seat 4 and a pressing arm 5, and a frame outer limiting block 12 is installed on the support seat, and the pressing arm is lifted or pressed down by a cylinder, and a side beam limiting block 6 is installed under the head of the pressing arm, and a frame pressing block 7 is installed under the middle part of the pressing arm. When the pressing arm is pressed down, the frame pressing block 7 can press the workpiece frame, and supports 11 are also arranged at the front and rear of the base frame, respectively, and a frame outer limiting block 12 is installed on the top of each support, and the frame outer limiting block has a "U"-shaped slot.

[0014] Preferably, a "T"-shaped beam positioning snap-in 311 is provided on the front "U"-shaped beam, and the number of snap-ins is the same as the number of "T"-shaped beams on the workpiece. When the tooling fixture is used, the head of the "T"-shaped beam will be stuck in the snap-in. With the multiple support of the bottom plate positioning pin and the "T"-shaped beam, the positioning accuracy can be effectively improved.

[0015] Preferably, the battery tray support frame is provided with a robot gripper avoidance opening 8. In the present embodiment, the number of the avoidance openings is set to four, so as to facilitate the robot gripper to grasp the workpiece.

[0016] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery tray inner cavity repair welding fixture, characterized in that: It includes a base frame, which is rectangular in shape as a whole, a bottom plate locating pin is arranged in the middle of the base frame, a battery tray support frame is arranged on the base frame, the battery tray support frame includes a front "U"-shaped beam, a rear "U"-shaped beam, an "I"-shaped beam, a middle front beam and a middle rear beam, the front "U"-shaped beam is connected to the "I"-shaped beam through the middle front beam, the rear "U"-shaped beam is connected to the "I"-shaped beam through the middle rear beam, a clamping mechanism is arranged on the front, middle and rear of the left and right sides of the base frame in sequence, the clamping mechanism includes a support seat and a pressure arm, a frame outer limit block is installed on the support seat, a side beam limit block is installed under the head of the pressure arm, and a frame pressure block is installed under the middle of the pressure arm, and supports are also arranged at the front and rear of the base frame respectively, and a frame outer limit block is installed on the top of each support.

2. A battery tray inner cavity repair welding fixture according to claim 1, characterized in that: The front "U"-shaped beam is provided with a "T"-shaped beam positioning bayonet.

3. A battery tray inner cavity repair welding fixture according to claim 1, characterized in that: The battery tray support frame is provided with a robot gripper avoidance opening.

Images