Long-strip-shaped component welding tool with high position precision

Abstract

The utility model discloses a long-strip-shaped component welding tool with high position precision, which comprises a tool body, the tool body is provided with a rack, the top end of the rack is provided with a positioning assembly, the positioning assembly comprises two positioning pins protruding upwards, the positioning pins are fixed on the rack at intervals, and the positioning pins are fixed on the rack at intervals. The positioning holes are formed in the two ends of the long-strip-shaped component in a penetrating mode; a movable lower electrode is arranged below the positioning assembly, a movable upper electrode is arranged above the positioning assembly, the lower electrode comprises a hollow electrode shell and an electrode end cap fixedly arranged on the electrode shell, the electrode end cap is provided with a center hole used for allowing a bolt screw to penetrate, an insulating sleeve is arranged in the electrode shell, and the insulating sleeve is connected with the electrode shell. And the insulating sleeve is in clearance fit with the screw rod. The utility model has the beneficial effects that the position stability of the bolt welded on the strip-shaped component is ensured, and the requirement of assembly precision can be met.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to a welding fixture for long strip components with high positioning accuracy. Background Technology

[0002] In the manufacturing process of new energy battery boxes, long strip-shaped components are typically used to fix battery modules. These components need to be bolted to the bottom of the battery box to ensure the stability and safety of the battery modules. For ease of assembly, bolts need to be welded to the components. However, existing welding fixtures have significant problems when welding bolts, especially in terms of bolt position control. There are issues such as unstable component position, uncontrolled offset direction, and unstable bolt position after welding, which cannot meet the requirements for assembly accuracy.

[0003] Therefore, there is an urgent need for a welding fixture that can improve the accuracy of bolt welding in order to meet the requirements of assembly precision. Utility Model Content

[0004] In view of this, the present invention provides a welding fixture for long strip components with high positional accuracy, which ensures stable and high precision in bolt welding position and meets the requirements of assembly accuracy.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] The fixture includes a tooling body, which has a frame. A positioning component is provided at the top of the frame. The positioning component includes two upwardly protruding positioning pins, which are fixed at intervals on the frame and are used to pass through the positioning holes at both ends of the long strip-shaped component to be welded.

[0007] It also includes an upper electrode and a lower electrode arranged opposite each other. The upper electrode and the lower electrode are respectively movably arranged on the upper and lower sides of the positioning component. The lower electrode includes an electrode housing and an electrode end cap fixed on the electrode housing. The upper end of the electrode housing is a hollow structure. The electrode end cap has a central hole that runs through the vertical direction. An insulating sleeve is fixed on the wall of the central hole. The insulating sleeve is clearance-fitted with the screw to be welded.

[0008] By adopting the above structure, the component is fixed at two points to prevent it from shifting and to ensure the stability of its position. The position of the bolt is also ensured by the cooperation between the insulating sleeve and the screw, thereby improving the welding accuracy of the bolt and making it meet the requirements of assembly.

[0009] Preferably, the frame is equipped with multiple positioning components. This structure is adaptable to various long, narrow structural members.

[0010] Preferably, the frame includes a rectangular frame and a mounting frame at the top of the rectangular frame. The mounting frame includes a mounting portion overlapping the rectangular frame and an extension portion extending outward relative to the rectangular frame. A plurality of mounting plates are fixed to the top of the mounting frame, and these mounting plates are distributed on the mounting portion and the extension portion. The positioning components are all mounted on the mounting plates. This structure facilitates installation and welding, and provides stable support.

[0011] Preferably, the positioning assembly further includes two guide plates, which are located on both sides of the line connecting the two positioning pins. This structure facilitates the fixing of the elongated component and further improves the stability of its position.

[0012] Preferably, the upper ends of both guide plates are inclined outwards. This structure facilitates quick installation and positioning.

[0013] Preferably, the two positioning pins of each positioning component are spaced at least one edge of the rectangular frame apart, with one positioning pin concentrated on the extension corresponding to one corner of the rectangular frame, and the other positioning pin distributed on the mounting portion or extension corresponding to the remaining triangular area of ​​the rectangular frame. This structure achieves a compact design while maximizing the distance between the two positioning pins, facilitating the fixing of both ends of the elongated component.

[0014] Preferably, the positioning assembly further includes a pin seat and multiple connecting blocks connected to the pin seat, with adjusting shims provided between adjacent connecting blocks, and the positioning pin is mounted on the pin seat. This structure facilitates the installation and adjustment of the positioning pin.

[0015] Preferably, the pin seat has a mounting hole, the locating pin has a support portion in the middle, the lower end of the locating pin is installed in the mounting hole, and the support portion is supported at the end of the mounting hole. Using the above structure, the locating pin is installed.

[0016] Preferably, the upper end of the locating pin has a beveled surface for connecting the end. This structure facilitates quick alignment and installation of the locating holes in elongated components, improving operational efficiency.

[0017] Preferably, the insulating sleeve is made of KCF material, and the gap between the insulating sleeve and the screw is less than 0.2mm. This structure ensures good insulation performance and a high-precision fit.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. The welding fixture for long strip components with high positioning accuracy provided by this utility model uses two positioning pins inserted into the positioning holes at both ends of the long strip component to ensure high-precision positioning of the component during the welding process. At the same time, guide plates are provided on both sides of the component to further limit the offset of the component and ensure the stability of the welding position of the component.

[0020] 2. The gap between the insulating sleeve and the screw is less than 0.2mm to ensure the stability of the bolt position during welding and that the bolt position after welding meets the requirements of high-precision assembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a diagram showing the usage state of this utility model;

[0023] Figure 3 This is a schematic diagram of the positioning component 2;

[0024] Figure 4 This is a schematic diagram of the internal structure of the electrode cap 32;

[0025] Figure 5 A cross-sectional view showing the installation method of locating pin 21. Detailed Implementation

[0026] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0027] like Figure 1 As shown, a welding fixture for elongated components with high positioning accuracy includes a fixture body A. The fixture body A has a frame 1, multiple positioning components 2, a lower electrode 3, and an upper electrode 4. The multiple positioning components 2 are all located at the top of the frame 1 and are used to accurately position the elongated component B. The lower electrode 3 and the upper electrode 4 are used for welding bolts.

[0028] like Figure 1 As shown, the frame 1 includes a rectangular frame 11 and a mounting frame 12 located at the top of the rectangular frame 11. The mounting frame 12 consists of a mounting portion 122 and an extension portion 121, wherein the mounting portion 122 overlaps with the rectangular frame 11, and the extension portion 121 extends outward relative to the rectangular frame 11. A plurality of mounting plates 13 are fixedly provided at the top of the mounting frame 12, and the mounting plates 13 are distributed on the mounting portion 122 and the extension portion 121 for mounting the positioning assembly 2.

[0029] like Figure 1 , Figure 2 and Figure 3As shown, the positioning assembly 2 includes two upwardly protruding positioning pins 21, two guide plates 22, pin seats 23, and multiple connecting blocks 24. The positioning pins 21 are fixed at intervals on the frame 1 and are used to pass through the positioning holes B1 at both ends of the elongated component B. Their upper ends are provided with inclined surfaces 21b for connecting the ends, ensuring high-precision positioning of the component. The two guide plates 22 are located on both sides of the line connecting the two positioning pins 21. The upper ends of both guide plates 22 are inclined outwards to guide the installation of the elongated component B and limit its offset direction. The pin seats 23 are fixed to the mounting plate 13 via connecting blocks 24. Adjusting shims 4 are provided between adjacent connecting blocks 24 for fine-tuning the position of the positioning pins 21. Figure 5 As shown, the positioning pin 21 is installed on the pin seat 23, the pin seat 23 is provided with a mounting hole 23a, and the positioning pin 21 is provided with a support part 21a in the middle. The support part 21a is supported at the end of the mounting hole 23a to ensure the verticality and stability of the positioning pin 21.

[0030] like Figure 1 As shown, the two positioning pins 21 of each positioning component 2 are spaced apart by at least one side of the rectangular frame 11. One positioning pin 21 is concentrated on the extension 121 corresponding to one corner of the rectangular frame 11, and the other positioning pin 21 is distributed on the mounting part 122 or extension 121 corresponding to the other triangular areas of the rectangular frame 11.

[0031] like Figure 2 and Figure 4 As shown, the upper electrode 4 and the lower electrode 3 are positioned opposite each other and are movably arranged on the upper and lower sides of the positioning assembly 2, respectively. The lower electrode 3 includes an electrode housing 31 and an electrode end cap 32 fixed on the electrode housing 31. The upper end of the electrode housing 31 is hollow, and the electrode end cap 32 has a central hole 32a that extends vertically through the center. An insulating sleeve 33 is fixed on the wall of the central hole 32a. The insulating sleeve 33 is made of KCF material and has a clearance fit with the screw to be welded, with a clearance of less than 0.2 mm, which can ensure the stability of the bolt position during the welding process.

[0032] like Figure 2As shown, the elongated component B has mounting holes B1 distributed on it. The purpose of the welding fixture is to weld bolts into the mounting holes B1. The working process of the welding fixture is as follows: the elongated component B to be welded slides down the inclined surface of the guide plate 22, and the positioning holes B1 at both ends of the elongated component B pass through the two positioning pins 21 of the positioning component 2, thereby fixing the elongated component B and ensuring its positional accuracy. After fixing the elongated component B, the lower electrode 3 moves below one of the mounting holes B1 to be welded, and the bolt to be welded passes downward through the mounting hole B1. The screw passes through the insulating sleeve 33, maintaining a clearance fit with the insulating sleeve 33, thereby ensuring the positional accuracy of the bolt. Then, the upper electrode 4 moves to the welding position, clamps the bolt and the elongated component B, and performs welding. During the welding process, the insulating sleeve 33 and the positioning component 2 can ensure the stability of the bolt's position, and the elongated component B after welding can meet the assembly accuracy requirements.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A long strip member welding tool having high positional accuracy, characterized by: The utility model provides a welding device for long strip member, which comprises a tool body (A) having a rack (1) provided with a positioning assembly (2) at the top end, the positioning assembly (2) comprising two upwardly protruding positioning pins (21) fixedly arranged on the rack (1) and used for being inserted into positioning holes (B1) at both ends of a long strip member (B) to be welded. The utility model also comprises an upper electrode (4) and a lower electrode (3) arranged opposite to each other, the upper electrode (4) and the lower electrode (3) being movably arranged on the upper and lower sides of the positioning assembly (2), the lower electrode (3) comprising an electrode shell (31) and an electrode end cap (32) fixedly arranged on the electrode shell (31), the electrode shell (31) being a hollow structure at the upper end, the electrode end cap (32) having a central hole (32a) penetrating in the vertical direction, and an insulating sleeve (33) being fixedly arranged on the hole wall of the central hole (32a) and being in gap cooperation with a screw rod to be welded.

2. The long strip member welding tool with high position accuracy according to claim 1, characterized in that: A plurality of positioning assemblies (2) are fixedly arranged on the rack (1).

3. The long strip member welding tool with high position accuracy according to claim 2, characterized in that: The rack (1) comprises a rectangular frame (11) and a mounting frame (12) arranged at the top end of the rectangular frame (11), the mounting frame (12) comprising a mounting portion (122) overlapping the rectangular frame (11) and an extension portion (121) extending outward relative to the rectangular frame (11), a plurality of mounting plates (13) being fixedly arranged at the top end of the mounting frame (12) and distributed on the mounting portion (122) and the extension portion (121), and the positioning assemblies (2) being arranged on the mounting plates (13).

4. The long strip member welding tool with high position accuracy according to claim 1, characterized in that: The positioning assembly (2) further comprises two guide plates (22) arranged on both sides of the line connecting the two positioning pins (21).

5. The long strip member welding tool with high position accuracy according to claim 4, characterized in that: The upper ends of the two guide plates (22) are inclined outward.

6. The long strip member welding tool with high position accuracy according to claim 3, characterized in that: The two positioning pins (21) of each positioning assembly (2) are arranged at least at one side of the rectangular frame (11), one of the two positioning pins (21) being arranged on the extension portion (121) corresponding to one corner of the rectangular frame (11), and the other positioning pin (21) being arranged on the mounting portion (122) or the extension portion (121) corresponding to the remaining three corners of the rectangular frame (11).

7. The long strip member welding tool with high position accuracy according to claim 1, characterized in that: The positioning assembly (2) further comprises a pin seat (23) and a plurality of connecting blocks (24) connected to the pin seat (23), adjustment shims (5) being arranged between adjacent connecting blocks (24), and the positioning pins (21) being arranged on the pin seat (23).

8. The long strip member welding tool with high position accuracy according to claim 7, characterized in that: The pin seat (23) is provided with a mounting hole (23a), the positioning pin (21) is provided with a support portion (21a) at the middle portion, the lower end of the positioning pin (21) is arranged in the mounting hole (23a), and the support portion (21a) is arranged at the end portion of the mounting hole (23a).

9. The long strip member welding tool with high position accuracy according to claim 1, characterized in that: The upper end of the positioning pin (21) is provided with a bevel (21b) connected to the end portion.

10. The long strip member welding tool with high position accuracy according to claim 1, characterized in that: The insulating sleeve (33) is made of KCF material, and the gap between the insulating sleeve (33) and the screw rod is less than 0.2 mm.

Images