High-precision quick-change device for spot welding clamp

Abstract

The utility model relates to a high-precision quick-change device for a spot welding clamp, which comprises a platform base frame, I-shaped cylinders are mounted on the front side, the rear side, the left side and the right side of the platform base frame, and the four I-shaped cylinders are connected with an upper cover plate. Two II-type cylinders are mounted in the center of the platform base frame; each II-type air cylinder is connected with a variable plate; and each variable plate is matched with a sliding support system. The spot welding fixture is convenient to mount, the switching efficiency is improved, the operation intensity of personnel is reduced, and the production efficiency is improved; the repeated positioning precision after the clamp is switched is ensured, and through pneumatic control, the operation efficiency is improved, the operation safety is improved, and the debugging cost is reduced. In addition, the positioning precision is reliable, the time for primary trial teaching in production is reduced, and the maintenance cost is also reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related field of automobile parts production and processing, in particular to a high-precision quick-change device for spot welding fixtures. BACKGROUND

[0002] Large automobile parts, especially sheet metal parts, need to be spot welded during production and processing. Different fixtures need to be replaced according to different positions on the parts. This requires manual switching on the platform, which consumes a lot of manpower and takes a long time. Traditional fixture replacement equipment has defects such as low switching efficiency, poor repeatability, and long switching time. SUMMARY

[0003] To overcome the above technical defects, the utility model provides a high-precision quick-change device for spot welding fixtures.

[0004] The technical problem to be solved by the utility model is solved by the following technical scheme:

[0005] A high-precision quick-change device for spot welding fixtures includes a platform base frame. The front, rear, left, and right sides of the platform base frame are each equipped with an I-type air cylinder. Four I-type air cylinders are each connected to an upper cover plate. The upper cover plate can be controlled to rise and fall to facilitate the use and replacement of the fixture.

[0006] Two II-type air cylinders are installed at the center of the platform base frame. Each II-type air cylinder is connected to a variable plate. Each variable plate is equipped with a sliding support system. The II-type air cylinder can control the sliding support system to support the upper cover plate and the fixture in the working state.

[0007] Preferably, the I-type air cylinder is connected to the upper cover plate through a speed regulating joint.

[0008] Two rows of sliding bearings are installed on the upper cover plate. The two rows of sliding bearings can be limited to slide with the two rows of double guide rails at the bottom of the spot welding fixture. This facilitates the replacement and use of the spot welding fixture.

[0009] Two stop blocks adapted to the variable plate are installed on the platform base frame. The II-type air cylinder is connected to the variable plate through a hinged joint. The stop block is used to limit the sliding distance of the support part.

[0010] The utility model has the following advantages:

[0011] The utility model discloses convenient installation of spot welding fixture, and improve switching efficiency, alleviate personnel operation intensity, improve production efficiency, guarantee the repeat positioning accuracy after fixture switching, improve operating efficiency through pneumatic control, improve the security of operation, reduce the cost of debugging. In addition, the utility model discloses positioning accuracy is reliable, and the time of reducing production initial teaching is also reduced, and the cost of maintenance, maintenance is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model is further described below in combination with the drawings and examples.

[0013] Figure 1 It is the perspective drawing of the utility model;

[0014] Figure 2 It is Figure 1 It is the perspective drawing after removing the upper cover plate and pneumatic switch;

[0015] Figure 3 It is Figure 2 It is the partial close-up view of I of

[0016] Figure 4 It is the structural drawing of spot welding fixture.

[0017] In the drawing: 1, platform base frame, 2, I type air cylinder, 3, upper cover plate, 4, sliding bearing, 5, II type air cylinder, 6, variable plate, 7, stop block, 8, pneumatic button, 9, positioning block, 10, guide column, 10a, convex head, 11, guide sleeve, 12, floating block, 12a, floating groove, 12b, support part, 13, auxiliary pad block, 13a, positioning pin, 14, butt joint block, 15, double guide rail, 16, rear pad block, 16a, positioning hole. DETAILED DESCRIPTION

[0018] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model will be described more clearly and more completely below in combination with the drawings in the examples, and of course the described example is only a part of the utility model but not all, based on this example, the technical personnel in the art obtains other examples without paying the creative labor intensity, and all are within the protection scope of the utility model.

[0019] The spot welding fixture used and replaced by the utility model is as shown in the drawing, and the fixture bottom is respectively provided with double guide rail 15, butt joint block 14 and four rear pad blocks 16. Figure 4 The butt joint block 14 is provided with butt joint groove, and any two rear pad blocks 16 of the four rear pad blocks 16 are provided with positioning hole 16a.

[0020] As Figure 2 And Figure 3As shown, a high-precision quick-change device for spot welding jigs comprises a platform base frame 1, which is provided with I-type air cylinders 2 on the front side, rear side, left side and right side, and each of the four I-type air cylinders 2 is connected with an upper cover plate 3. That is, the upper cover plate 3 can be controlled to rise and fall to realize the use and replacement of the jigs.

[0021] As shown in the drawings, Figure 2 and Figure 3 the platform base frame 1 is provided with two II-type air cylinders 5 in the center; each of the II-type air cylinders 5 is connected with a variable plate 6; and each of the variable plates 6 is matched with a sliding support system. The II-type air cylinders 5 can control the sliding support system to support the upper cover plate 3 and the jigs in the working state.

[0022] As shown in the drawings, Figure 1 and Figure 2 the I-type air cylinders 2 are connected with the upper cover plate 3 through speed regulating joints.

[0023] As shown in the drawings, Figure 1 the upper cover plate 3 is provided with two rows of sliding bearings 4. The two rows of sliding bearings 4 can be limitedly and slidably matched with the two rows of double guide rails at the bottom of the spot welding jigs to facilitate the replacement and use of the spot welding jigs.

[0024] As shown in the drawings, Figure 3 the platform base frame 1 is provided with two stop blocks 7 matched with the variable plates 6; and the II-type air cylinders 5 are connected with the variable plates 6 through hinged joints. The stop blocks 7 are used to limit the sliding distance of the support portions 12b.

[0025] As shown in the drawings, Figure 1 the platform base frame 1 is provided with a pneumatic button 8 and two positioning blocks 9 on the left part. The pneumatic button 8 can start to control the work of each air cylinder. The positioning blocks 9 can be matched with the butt blocks 14.

[0026] As shown in the drawings, Figures 1 to 3 the upper cover plate 3 is connected with four guide columns 10 at the bottom end, and the platform base frame 1 is provided with guide sleeves 11 vertically and slidably installed with each of the guide columns 10. The above is a conventional design of the sliding structure. Each of the guide columns 10 is provided with a convex head portion 10a at the upper end.

[0027] As shown in the drawings, Figure 3 the sliding support system comprises a floating block 12 installed on each of the variable plates 6; each of the floating blocks 12 is provided with a floating groove 12a and a support portion 12b; and the floating groove 12a is slidably and hingedly matched with the corresponding guide column 10. After the floating block 12 slides with the variable plate 6, the support portion 12b can support the convex head portion 10a, so as to realize the support of the jigs.

[0028] As shown in the drawings, Figure 1As shown, the upper end of the upper cover plate 3 is also provided with four auxiliary pads 13, and any two of the four auxiliary pads 13 are provided with positioning pins 13a. After the upper cover plate 3 is lifted, the auxiliary pads 13 can be attached to the rear pads 16, and the positioning pins 13a can be matched with the positioning holes 16a.

[0029] In use, the worker only needs to slide the spot welding fixture as shown to the upper cover plate 3 in a limited sliding mode of the double guide rails 15 matched with the two rows of sliding bearings 4, until the butt blocks 14 abut against the positioning blocks 9. Figure 4

[0030] Further, the I-shaped cylinder 2 pushes the upper cover plate 3, so that the auxiliary pads 13 are attached to the rear pads 16, and the positioning pins 13a are inserted into the corresponding positioning holes 16a.

[0031] Further, the II-shaped cylinder 5 pushes the variable plate 6, so that the supporting part 12b moves to the supporting convex part 10a, thereby giving the fixture a working support, and facilitating the work of the spot welding fixture.

[0032] When it is necessary to replace the fixture, the worker only needs to control the upper cover plate 3 to descend, so that the unused spot welding fixture can be slid away, and a new spot welding fixture can be arranged in the above-mentioned mode, so that the purpose of quick replacement can be achieved.

[0033] The above shows and describes the basic principles, main features and advantages of the utility model. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.​

Claims

1. A high-precision quick-change device for spot welding jigs, comprising a platform base frame (1), characterized in that: The I-shaped air cylinder (2) is installed on the front side, the rear side, the left side and the right side of the platform base frame (1), and the four I-shaped air cylinders (2) are connected with the upper cover plate (3); The two II-shaped air cylinders (5) are installed at the center of the platform base frame (1), each II-shaped air cylinder (5) is connected with the variable plate (6), and each variable plate (6) is matched with the sliding support system.

2. The high-precision quick-change device for spot welding jigs according to claim 1, characterized in that: The I-shaped air cylinder (2) and the upper cover plate (3) are connected through the speed regulating joint.

3. The high-precision quick-change device for spot welding jigs according to claim 1, characterized in that: The upper cover plate (3) is installed with two rows of sliding bearings (4).

4. The high-precision quick-change device for spot welding jigs according to claim 1, characterized in that: The two stop blocks (7) matched with the variable plate (6) are installed on the platform base frame (1), and the II-shaped air cylinder (5) and the variable plate (6) are connected through the hinged joint.

5. The high-precision quick-change device for spot welding jigs according to claim 1, characterized in that: The pneumatic button (8) and the two positioning blocks (9) are installed on the left part of the platform base frame (1).

6. The high-precision quick-change device for spot welding jigs according to claim 1, characterized in that: The bottom end of the upper cover plate (3) is connected with the four guide columns (10), the platform base frame (1) is installed with the guide sleeve (11) vertically slidingly installed with each guide column (10), and the upper end of each guide column (10) is provided with the convex head (10a).

7. A high-precision quick-change device for a spot welding fixture according to claim 6, characterized in that: The sliding support system comprises the floating block (12) installed on each variable plate (6), each floating block (12) is provided with the floating groove (12a) and the supporting portion (12b), and the floating groove (12a) is slidingly and hingedly matched with the corresponding guide column (10).

8. The high-precision quick-change device for spot welding jigs according to claim 1, characterized in that: The upper end of the upper cover plate (3) is further installed with the four auxiliary pads (13), and the positioning pin (13a) is installed on any two auxiliary pads (13) in the four auxiliary pads (13).

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