Welding positioning tool for welding nut

Abstract

The utility model discloses a welding positioning tool for a welding nut. The welding positioning tool comprises a mounting plate, a supporting frame, a positioning block and two locking units. The two ends of the support frame are respectively mounted on the mounting plate and the positioning block; the lower portions of the two locking units are both mounted on the mounting plate, and the upper portions of the two locking units penetrate through the positioning block. Through the application of the welding and positioning tool for the welding nut, the welding nut is stably and effectively positioned, clamping and positioning integration of the welding nut is achieved, the welding size and the welding quality are guaranteed, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile production, in particular to a welding nut welding positioning tooling. Background Technique

[0002] Flange welding nuts are commonly used in the assembly of members and wire harnesses in the subframe and front and rear beams of the automotive chassis structure. For the existing positioning structures commonly used when welding the flange welding nut to the body, a set of telescopic cylinders are respectively required for positioning and clamping the welding nut. There are many cylinders, which makes the fixture design difficult and inconvenient to arrange. The clamping mechanism of the welding nut consists of various L-shaped brackets, which often interfere with the welding posture of the welding torch, bringing great inconvenience to debugging. Especially for parts with concentrated and large numbers of welding nuts, the problem is particularly obvious. Moreover, the clamping mechanism and the welding surface of the welding nut are on the same side, and the telescopic pins of the clamping cylinder are easily contaminated with welding slag, resulting in jamming of the cylinder expansion and contraction. Content of the Utility Model

[0003] In view of this, to solve the above problems, the purpose of the utility model is to provide a welding nut welding positioning tooling, which is characterized by including:

[0004] A mounting plate, a support frame, a positioning block, and two locking units;

[0005] Both ends of the support frame are respectively installed on the mounting plate and the positioning block;

[0006] The lower parts of the two locking units are both installed on the mounting plate, and the upper parts of the two locking units pass through the positioning block;

[0007] Wherein, each locking unit includes: a telescopic cylinder, a top rod, a spring assembly, an expansion pin sleeve, and a welding nut. The telescopic cylinder is installed on the lower surface of the mounting plate, the output end of the telescopic cylinder passes through the mounting plate, the lower end of the top rod is installed on the output end of the telescopic cylinder, the expansion pin sleeve is sleeved on the outer wall of the upper end of the top rod, the outer diameter of the upper end of the top rod is gradually increased from bottom to top, the upper ends of the top rod and the expansion pin sleeve both pass through the upper surface of the positioning block, the spring assembly is sleeved on the outer wall of the top rod, the lower end of the spring assembly abuts against the upper surface of the mounting plate, the upper end of the spring assembly abuts against the lower end of the expansion pin sleeve, the welding nut is sleeved on the outer wall of the upper end of the expansion pin sleeve, and the welding nut and the positioning block jointly clamp a workpiece.

[0008] The above-mentioned welding nut welding positioning tooling is characterized in that the cross-section of the support frame along the vertical direction is in a "冂" shape.

[0009] The above-mentioned welding nut welding positioning tool is characterized in that the expansion pin sleeve includes: a first ring body, a second ring body and a sleeve, the upper end of the spring assembly is clamped on the lower end of the first ring body, the upper end of the first ring body is installed on the lower end of the second ring body, the upper end of the second ring body is installed on the lower end of the sleeve, and two through grooves are opened at the upper end of the sleeve, and the two through grooves are extended along the length direction of the sleeve.

[0010] The above-mentioned welding nut welding positioning tool is characterized in that the spring assembly includes: a return spring, a support ring and an annular gasket, the lower end of the support ring is installed on the upper surface of the mounting plate, the lower surface of the annular gasket is installed on the upper end of the support ring, the return spring, the support ring and the annular gasket are all sleeved on the outer wall of the push rod, the lower end of the return spring is clamped against the upper surface of the annular gasket, and the upper end of the return spring is clamped against the lower end of the first ring body.

[0011] The above-mentioned welding nut welding positioning tool is characterized in that the outer wall of the upper end of the push rod is arranged in an arc shape.

[0012] Compared with the prior art, the above technical solution has the following positive effects:

[0013] Through the application of the utility model, a welding nut welding positioning tool is provided, which realizes stable and effective positioning of the welding nut, realizes the integration of clamping and positioning of the welding nut, ensures welding size and welding quality, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a three-dimensional diagram of a welding nut welding positioning tool.

[0015] Figure 2 This is a front view of a welding nut welding positioning tool of the present invention.

[0016] Figure 3 The utility model is a cross-sectional schematic diagram of a welding nut welding positioning tool.

[0017] Figure 4 This is a schematic diagram of an expansion pin sleeve of a welding nut welding positioning tooling of the utility model.

[0018] 1. Mounting plate; 2. Support frame; 3. Positioning block; 4. Telescopic cylinder; 5. Push rod; 6. Expansion pin sleeve; 7. Welding nut; 8. First ring body; 9. Second ring body; 10. Sleeve; 11. Through groove; 12. Return spring; 13. Support ring; 14. Ring gasket. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific implementations, but they are not intended to limit the present invention.

[0020] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by those familiar with this technology. They are not used to limit the conditions for implementation of the present invention and therefore have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0021] like Figures 1 to 4 As shown, a preferred embodiment of a welding nut welding positioning tool is shown, which includes: a mounting plate 1, a support frame 2, a positioning block 3 and two locking units.

[0022] The two ends of the support frame 2 are respectively mounted on the mounting plate 1 and the positioning block 3; the lower parts of the two locking units are mounted on the mounting plate 1, and the upper parts of the two locking units pass through the positioning block 3; wherein, each locking unit includes: a telescopic cylinder 4, a push rod 5, a spring assembly, an expansion pin sleeve 6 and a welding nut 7, the telescopic cylinder 4 is mounted on the lower surface of the mounting plate 1, the output end of the telescopic cylinder 4 passes through the mounting plate 1, the lower end of the push rod 5 is mounted on the output end of the telescopic cylinder 4, the expansion pin sleeve 6 is sleeved on the outer wall of the upper end of the push rod 5, the outer diameter of the upper end of the push rod 5 is gradually increased from bottom to top, the upper end of the push rod 5 and the upper end of the expansion pin sleeve 6 both pass through the upper surface of the positioning block 3, the spring assembly is sleeved on the outer wall of the push rod 5, the lower end of the spring assembly is clamped against the upper surface of the mounting plate 1, the upper end of the spring assembly is clamped against the lower end of the expansion pin sleeve 6, the welding nut 7 is sleeved on the outer wall of the upper end of the expansion pin sleeve 6, and the welding nut 7 and the positioning block 3 jointly clamp a workpiece.

[0023] During actual use, when assembling the workpiece to be welded, the telescopic cylinder 4 drives the push rod 5 to move upward in the vertical direction, and the upper end of the push rod 5 loses the force on the expansion pin sleeve 6, and the outer diameter of the expansion pin sleeve 6 becomes smaller. The workpiece is sleeved on the outer wall of the expansion pin sleeve 6 of the two locking units, and then the welding nut 7 is sleeved on the outer wall of the expansion pin sleeve 6. Then the telescopic cylinder 4 drives the push rod 5 to move downward in the vertical direction, and the upper end of the push rod 5 increases the force on the expansion pin sleeve 6, so that the outer diameter of the expansion pin sleeve 6 becomes larger, so that the welding nut 7 and the positioning block 3 clamp the workpiece to weld the workpiece.

[0024] The present utility model further has the following embodiments on the above basis:

[0025] Furthermore, a welding nut welding positioning tooling, wherein the cross-section of the support frame 2 in the vertical direction is arranged in a "冂" shape.

[0026] Furthermore, a welding nut welding positioning tooling, wherein the expansion pin sleeve 6 includes: a first ring body 8, a second ring body 9 and a sleeve 10. The upper end of the spring assembly is clamped against the lower end of the first ring body 8. The upper end of the first ring body 8 is installed at the lower end of the second ring body 9. The upper end of the second ring body 9 is installed at the lower end of the sleeve 10. Two through grooves 11 are provided at the upper end of the sleeve 10, and the two through grooves 11 extend along the length direction of the sleeve 10. Further, the two through grooves 11 facilitate the increase and decrease of the outer diameter of the upper end of the sleeve 10 to complete the fixation of the welding nut 7, and thus facilitate the clamping or removal of the workpiece.

[0027] Furthermore, a welding nut welding positioning tooling, wherein the spring assembly includes: a return spring 12, a support ring 13 and an annular gasket 14. The lower end of the support ring 13 is installed on the upper surface of the mounting plate 1. The lower surface of the annular gasket 14 is installed at the upper end of the support ring 13. The return spring 12, the support ring 13 and the annular gasket 14 are all sleeved on the outer wall of the ejector rod 5. The lower end of the return spring 12 is clamped against the upper surface of the annular gasket 14, and the upper end of the return spring 12 is clamped against the lower end of the first ring body 8. Further, in the actual use process, the return spring 12 reserves the processing deviation of the welding nut 7, ensures the fixation of the welding nut 7, and facilitates the taking and placing of the workpiece.

[0028] Furthermore, a welding nut welding positioning tooling, wherein the outer wall of the upper end of the ejector rod 5 is arc-shaped. Further, the outer wall of the upper end of the ejector rod 5 is arc-shaped, which facilitates the extrusion of the outer wall of the upper end of the ejector rod 5 against the sleeve 10, so as to facilitate the increase or decrease of the outer diameter of the sleeve 10.

[0029] The above are only the preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A welding nut welding positioning tool, characterized in that: Comprising: Mounting plate, support frame, positioning block, two locking units; Both ends of the support frame are respectively mounted on the mounting plate and the positioning block; The lower parts of the two locking units are both mounted on the mounting plate, and the upper parts of the two locking units pass through the positioning block; Wherein, each locking unit comprises: a telescopic cylinder, a push rod, a spring assembly, an expansion pin sleeve and a welding nut. The telescopic cylinder is mounted on the lower surface of the mounting plate, the output end of the telescopic cylinder passes through the mounting plate, the lower end of the push rod is mounted on the output end of the telescopic cylinder, the expansion pin sleeve is sleeved on the outer wall of the upper end of the push rod, the outer diameter of the upper end of the push rod is gradually increased from bottom to top, the upper ends of the push rod and the expansion pin sleeve both pass through the upper surface of the positioning block, the spring assembly is sleeved on the outer wall of the push rod, the lower end of the spring assembly abuts against the upper surface of the mounting plate, the upper end of the spring assembly abuts against the lower end of the expansion pin sleeve, the welding nut is sleeved on the outer wall of the upper end of the expansion pin sleeve, and the welding nut and the positioning block jointly clamp a workpiece.

2. A welding nut welding positioning tool according to claim 1, characterized in that: The cross-section of the support frame along the vertical direction is in a "冂" shape.

3. The welding nut positioning tool according to claim 1, characterized in that: The expansion pin sleeve comprises: a first ring body, a second ring body and a sleeve. The upper end of the spring assembly abuts against the lower end of the first ring body, the upper end of the first ring body is mounted on the lower end of the second ring body, the upper end of the second ring body is mounted on the lower end of the sleeve, and two through grooves are formed in the upper end of the sleeve and extend along the length direction of the sleeve.

4. A welding nut welding positioning tool according to claim 3, characterized in that: The spring assembly comprises: a return spring, a support ring and an annular gasket. The lower end of the support ring is mounted on the upper surface of the mounting plate, the lower surface of the annular gasket is mounted on the upper end of the support ring, the return spring, the support ring and the annular gasket are all sleeved on the outer wall of the push rod, the lower end of the return spring abuts against the upper surface of the annular gasket, and the upper end of the return spring abuts against the lower end of the first ring body.

5. The welding nut welding positioning tool according to claim 1, characterized in that: The outer wall of the upper end of the push rod is in an arc shape.

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