High-precision quick-change device for spot welding clamp

Abstract

The high-precision quick-change device comprises a platform base frame, the front side, the rear side, the left side and the right side of the platform base frame are each provided with an I-shaped air cylinder, and the four I-shaped air cylinders are all 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 relieved, 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 shortened, and the maintenance cost is also reduced.

Description

Technical Field

[0001] The invention relates to the relevant fields of production and processing of automobile parts, and in particular to a high-precision quick-change device for spot welding fixtures. Background Art

[0002] Large automotive parts, especially sheet metal parts, need to be spot welded during production and processing. Different fixtures need to be replaced according to the different locations of the spot welding on the parts. This requires manual switching on the platform, which is relatively labor-intensive and time-consuming. Traditional fixture replacement equipment has defects such as low switching efficiency, poor repeated positioning accuracy and long switching time. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned technology, the present invention proposes a high-precision quick-change device for spot welding fixtures.

[0004] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0005] A high-precision quick-change device for spot welding fixtures includes a platform base frame, on which I-type cylinders are installed on the front, rear, left and right sides of the platform base frame, and the four I-type cylinders are connected to an upper cover plate. That is, the upper cover plate can be controlled to rise and fall to realize the use and replacement of the fixture.

[0006] Two Type II cylinders are installed in the center of the platform base frame; each Type II cylinder is connected to a variable plate; each variable plate is equipped with a sliding support system. The Type II 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 cylinder and the upper cover plate are connected via 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 limitedly slidably matched with the two rows of double guide rails at the bottom of the spot welding fixture to facilitate 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 cylinder and the variable plate are connected by an articulated joint. The stop blocks are used to limit the sliding distance of the support part.

[0010] The beneficial effects of the present invention are:

[0011] The present invention is convenient for the installation of spot welding fixtures, improves the switching efficiency, reduces the operating intensity of personnel, and improves production efficiency; ensures the repeated positioning accuracy after the fixture is switched, improves the operating efficiency and the safety of operation through pneumatic control, and reduces the cost of debugging. In addition, the positioning accuracy of the present invention is reliable, the time for the initial trial teaching of production is reduced, and the cost of maintenance and maintenance is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 is a stereogram of the present invention;

[0014] Figure 2 yes Figure 1 A three-dimensional view after removing the upper cover and the pneumatic switch;

[0015] Figure 3 yes Figure 2 A local enlarged view of location I;

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

[0017] In the figure: 1. platform base frame; 2. Type I cylinder; 3. upper cover plate; 4. sliding bearing; 5. Type II 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. supporting part; 13. auxiliary pad block; 13a. positioning pin; 14. docking block; 15. double guide rail; 16. rear pad; 16a. positioning hole. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be explained more clearly and completely below in conjunction with the drawings in the embodiments. Of course, the described embodiments are only a part of the present invention but not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative labor are all within the protection scope of the present invention.

[0019] The spot welding fixture used and replaced by the present invention is as follows Figure 4 As shown, the bottom of the fixture is provided with double guide rails 15, a docking block 14 and four rear pads 16; the docking block 14 is provided with a docking groove, and any two of the four rear pads 16 are provided with positioning holes 16a.

[0020] like Figure 2 and Figure 3As shown, a high-precision quick-change device for spot welding fixtures includes a platform base frame 1, and I-type cylinders 2 are installed on the front side, rear side, left side, and right side of the platform base frame 1, and four I-type cylinders 2 are connected to 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 fixture.

[0021] like Figure 2 and Figure 3 As described above, two II-type cylinders 5 are installed in the center of the platform base frame 1; each II-type cylinder 5 is connected to a variable plate 6; each variable plate 6 is equipped with a sliding support system. The II-type cylinder 5 can control the sliding support system to support the upper cover plate 3 and the fixture in the working state.

[0022] like Figure 1 and Figure 2 As shown, the I-type cylinder 2 and the upper cover plate 3 are connected via a speed regulating joint.

[0023] like Figure 1 As shown, two rows of sliding bearings 4 are installed on the upper cover plate 3. The two rows of sliding bearings 4 can be limitedly slidably matched with the two rows of double guide rails at the bottom of the spot welding fixture to facilitate the replacement and use of the spot welding fixture.

[0024] like Figure 3 As shown, two stop blocks 7 adapted to the variable plate 6 are installed on the platform base frame 1; the II-type cylinder 5 is connected to the variable plate 6 via a hinged joint. The stop blocks 7 are used to limit the sliding distance of the support portion 12b.

[0025] like Figure 1 As shown, a pneumatic button 8 and two positioning blocks 9 are respectively installed on the left side of the platform base frame 1. The pneumatic button 8 can start and control the operation of each cylinder. The positioning block 9 can cooperate with the docking block 14.

[0026] like Figures 1 to 3 As shown, four guide posts 10 are connected to the bottom of the upper cover plate 3, and a guide sleeve 11 is installed on the platform base frame 1 to vertically slide each guide post 10. The above is a conventional design of a sliding structure. Each guide post 10 has a convex head 10a at its upper end.

[0027] like Figure 3 As shown, the sliding support system includes a floating block 12 installed on each variable plate 6; each floating block 12 is provided with a floating groove 12a and a supporting portion 12b; the floating groove 12a slides and articulates with the corresponding guide column 10. After the floating block 12 slides with the variable plate 6, the supporting portion 12b can support the convex portion 10a, thereby supporting the clamp.

[0028] like Figure 1As shown, four auxiliary pads 13 are also installed on the upper end of the upper cover plate 3, and positioning pins 13a are installed on any two of the four auxiliary pads 13. After the upper cover plate 3 rises, the auxiliary pads 13 can fit with the rear pad 16, and the positioning pins 13a can cooperate with the positioning holes 16a.

[0029] When using, the human only needs to Figure 4 The spot welding fixture shown slides to the top of the upper cover plate 3 in a limited sliding manner with double guide rails 15 cooperating with two rows of sliding bearings 4 until the docking block 14 abuts against the positioning block 9 .

[0030] Furthermore, the I-type cylinder 2 pushes up the cover plate 3, so that the auxiliary pad 13 fits the rear pad 16, and the positioning pin 13a is inserted into the corresponding positioning hole 16a.

[0031] Furthermore, the II-type cylinder 5 pushes the variable plate 6, so that the supporting portion 12b moves to the supporting convex portion 10a, thereby providing the fixture with working support, making it easier for the spot welding fixture to work.

[0032] When the fixture needs to be replaced, it is only necessary 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 placed in the above manner, so as to achieve the purpose of quick replacement.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

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

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

3. The high-precision quick-change device for spot welding fixture according to claim 1, characterized in that: Two rows of sliding bearings (4) are installed on the upper cover plate (3).

4. The high-precision quick-change device for spot welding fixture according to claim 1, characterized in that: Two stop blocks (7) adapted to the variable plate (6) are installed on the platform base frame (1); the II-type cylinder (5) and the variable plate (6) are connected via a hinged joint.

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

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

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

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

Images