Quick change device for welding fixture

Abstract

The utility model relates to a welding fixture quick-changing device which comprises a quick-changing frame, a locking portion and an installation face are arranged on the quick-changing frame, a bearing is arranged on the quick-changing frame in a sliding mode, a rolling body is arranged on the bearing, the rolling body can rotate relative to the installation face, and the locking portion and the installation face are arranged on the quick-changing frame. When the end portion of the rolling body is located above the installation face, the welding clamp is arranged on the rolling body in a sliding mode, and when the end portion of the rolling body is flush with the installation face in the left-right direction or located below the installation face, the welding clamp is locked on the installation face through the locking portion. According to the quick-change device for the welding fixture, the function of restraining the welding fixture on the quick-change frame in all directions can be achieved through one locking part, and the structure is simple and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fixture, especially a kind of welding fixture quick-change device. BACKGROUND

[0002] In manufacturing industry, many related products need to be welded, because there is great difference in shape, size and welding process etc. of different products, thus, different products need to switch different welding fixtures at welding work station to weld corresponding products, which requires welding work station to have the ability of quickly switching tooling fixture to improve welding efficiency and manufacturing efficiency of products.

[0003] In order to improve clamping efficiency, traditional welding work station generally adopts bull's eye bearing to realize switching of welding fixture, and needs to realize constraint of welding fixture in various directions on quick-change frame by mutual cooperation of several positioning and locking mechanisms when positioning welding fixture, thus leading to complex structure of traditional welding fixture quick-change device. SUMMARY

[0004] In order to solve the above technical problems, the utility model provides a kind of welding fixture quick-change device, which can simplify the structure of welding fixture quick-change device.

[0005] In order to achieve the above purpose, the utility model provides a kind of welding fixture quick-change device, including quick-change frame, locking part and mounting surface are arranged on the quick-change frame, bearing is slidably arranged on the quick-change frame, rolling body is arranged on the bearing, the rolling body is rotatably arranged relative to the mounting surface, when the end of the rolling body is above the mounting surface, the welding fixture is slidably arranged on the rolling body, when the end of the rolling body is flush with the mounting surface or below the mounting surface along left-right direction, the welding fixture is locked on the mounting surface by the locking part.

[0006] In an embodiment of the utility model, the quick-change frame includes support plate, mounting seat is arranged on the support plate, the mounting seat includes sleeve and cover plate connected with each other, sliding slot is formed between the sleeve and the cover plate.

[0007] In an embodiment of the utility model, the shell of the bearing is slidably arranged in the sliding slot, first compression spring is arranged between the shell of the bearing and the groove bottom of the sliding slot.

[0008] In an embodiment of the utility model, the quick-change frame further includes support frame, the support frame is arranged at the bottom of the support plate, containing cavity is arranged in the support frame, the cover plate is arranged at the bottom of the sleeve, the top end of the sleeve is arranged on the support plate, the bottom end of the sleeve and the cover plate are located in the containing cavity.

[0009] In one embodiment of the utility model, the sleeve is provided with a first sliding hole at one end away from the cover plate, the cover plate is provided with a second sliding hole, the outer shell of the bearing is provided with a mounting portion at one end away from the rolling element, the rolling element of the bearing is slidably arranged in the first sliding hole along the sliding direction of the bearing, and the mounting portion is slidably arranged in the second sliding hole.

[0010] In one embodiment of the utility model, the outer shell of the bearing is formed with a first limiting surface at one end away from the rolling element, the cover plate is formed with a second limiting surface at one end close to the outer shell, and the first compression spring is arranged between the first limiting surface and the second limiting surface.

[0011] In one embodiment of the utility model, the welding fixture quick change device comprises a fixture base plate, a first positioning portion is arranged on the fixture base plate, a first adapting portion is arranged on the quick change frame, and the first positioning portion and the first adapting portion are matched to form a first positioning mechanism.

[0012] In one embodiment of the utility model, the welding fixture quick change device further comprises a second positioning portion, a second adapting portion is arranged on the fixture base plate, a third adapting portion is arranged on the quick change frame, and the second positioning portion, the second adapting portion and the third adapting portion are matched to form a second positioning mechanism.

[0013] In one embodiment of the utility model, the welding fixture quick change device further comprises a locking adapting portion, the locking portion and the locking adapting portion are matched to form a locking mechanism, and the locking mechanism is used for locking the welding fixture on the mounting surface.

[0014] In one embodiment of the utility model, the welding fixture quick change device further comprises a rotary driving mechanism, and the quick change frame is arranged on an output shaft of the rotary driving mechanism.

[0015] Compared with the prior art, the above technical scheme of the utility model has the following advantages:

[0016] The welding fixture quick change device disclosed by the utility model not only realizes the sliding of the welding fixture on the bearing, but also realizes the locking function of the welding fixture along the sliding direction and the quick change frame through the sliding movement of the bearing, so that the welding fixture quick change device of the application can realize the constraint function of the welding fixture in each direction on the quick change frame through one locking portion, and is simple and reliable in structure, and can also reduce the design cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0018] Figure 1 is an explosion structure schematic view of the welding fixture and the quick-change frame of the welding fixture quick-change device of the present application;

[0019] Figure 2 is a first structure schematic view of the welding fixture and the quick-change frame of the welding fixture quick-change device of the present application;

[0020] Figure 3 is a second structure schematic view of the welding fixture and the quick-change frame of the welding fixture quick-change device of the present application;

[0021] Figure 4 is an explosion view of the fixture base plate and the quick-change frame of the welding fixture quick-change device of the present application;

[0022] Figure 5 is a top view of the fixture base plate and the quick-change frame of the welding fixture quick-change device of the present application;

[0023] Figure 6 is Figure 5 a sectional view of A-A in the figure;

[0024] Figure 7 is Figure 6 a local enlarged view of A in the figure;

[0025] Figure 8 is Figure 5 a sectional view of B-B in the figure;

[0026] Figure 9 is Figure 8 a local enlarged view of B in the figure;

[0027] Figure 10 is Figure 8 a local enlarged view of C in the figure;

[0028] Figure 11 is a state schematic view of the fixture base plate and the bull-eye bearing of the welding fixture quick-change device of the present application.

[0029] Description of the drawings:

[0030] 1, quick-change frame; 2, locking part; 3, mounting surface; 4, bearing; 5, rolling body; 6, welding fixture; 7, sliding groove; 8, shell; 9, first compression spring; 10, support plate; 11, mounting seat; 12, sleeve; 13, cover plate; 14, support frame; 15, containing cavity; 16, first sliding hole; 17, second sliding hole; 18, mounting part; 19, first limiting surface; 20, second limiting surface; 21, fixture bottom plate; 22, V-shaped groove; 23, positioning column; 24, positioning pin; 25, first pin hole; 26, second pin hole; 27, pin body; 28, sliding groove; 29, positioning ball; 30, locking bolt; 31, locking through hole; 32, rotary driving mechanism; 33, handle; 34, intermediate piece; 35, first sleeve; 36, second sleeve; 37, second compression spring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] Referring to Figures 1-11 As shown in the figure, it comprises a quick-change frame 1, the quick-change frame 1 is provided with a locking part 2 and a mounting surface 3, the quick-change frame 1 is slidably provided with a bearing 4, the bearing 4 is provided with a rolling body 5, the rolling body 5 is rotatably arranged relative to the mounting surface 3, when the end of the rolling body 5 is above the mounting surface 3, the welding fixture 6 is slidably arranged on the rolling body 5, when the end of the rolling body 5 is flush with the mounting surface 3 along the left-right direction or below the mounting surface 3, the welding fixture 6 is locked on the mounting surface 3 through the locking part 2.

[0033] The rolling body 5 of the welding fixture quick-change device of the application is rotatably arranged relative to the mounting surface 3, therefore, the bearing 4 adopts a bull's eye bearing, and the bull's eye bearing is slidably arranged, so that when the bull's eye bearing is located at different positions relative to the quick-change frame 1, the relative sliding of the welding fixture 6 on the bull's eye bearing can be realized, and the locking positioning of the welding fixture 6 on the quick-change device along the sliding direction of the bull's eye bearing can also be realized. Specifically, the welding fixture quick-change device of the application comprises a quick-change frame 1, the quick-change frame 1 is provided with a mounting surface 3 and a locking part 2, as shown in Figure 1 and Figure 4As shown, the top surface of the quick-change frame 1 is the mounting surface 3, and the welding fixture 6 can be directly locked on the mounting surface 3 of the quick-change frame 1 through the locking portion 2. Further, the bull-eye bearing is slidably arranged on the quick-change frame 1, and preferably, the sliding direction of the bull-eye bearing on the quick-change frame 1 is arranged perpendicularly to the mounting surface 3, so that the sliding direction of the bull-eye bearing is along the direction perpendicular to the mounting surface 3, and in addition, the axis direction of the bull-eye bearing is arranged along the sliding direction thereof. Among them, the quick-change frame 1 is arranged in a rectangular ring shape, the bull-eye bearing is arranged in multiple, and the bull-eye bearing array is arranged on the ring-shaped quick-change frame 1, as shown in Figure 1 As shown, the top surface of the quick-change frame 1 is the mounting surface 3, and the welding fixture 6 can be directly locked on the mounting surface 3 of the quick-change frame 1 through the locking portion 2. Further, the bull-eye bearing is slidably arranged on the quick-change frame 1, and preferably, the sliding direction of the bull-eye bearing on the quick-change frame 1 is arranged perpendicularly to the mounting surface 3, so that the sliding direction of the bull-eye bearing is along the direction perpendicular to the mounting surface 3, and in addition, the axis direction of the bull-eye bearing is arranged along the sliding direction thereof. Among them, the quick-change frame 1 is arranged in a rectangular ring shape, the bull-eye bearing is arranged in multiple, and the bull-eye bearing array is arranged on the ring-shaped quick-change frame 1, as shown in Figure 11 As shown, the top surface of the quick-change frame 1 is the mounting surface 3, and the welding fixture 6 can be directly locked on the mounting surface 3 of the quick-change frame 1 through the locking portion 2. Further, the bull-eye bearing is slidably arranged on the quick-change frame 1, and preferably, the sliding direction of the bull-eye bearing on the quick-change frame 1 is arranged perpendicularly to the mounting surface 3, so that the sliding direction of the bull-eye bearing is along the direction perpendicular to the mounting surface 3, and in addition, the axis direction of the bull-eye bearing is arranged along the sliding direction thereof. Among them, the quick-change frame 1 is arranged in a rectangular ring shape, the bull-eye bearing is arranged in multiple, and the bull-eye bearing array is arranged on the ring-shaped quick-change frame 1, as shown in Figure 11 As shown, the top surface of the quick-change frame 1 is the mounting surface 3, and the welding fixture 6 can be directly locked on the mounting surface 3 of the quick-change frame 1 through the locking portion 2. Further, the bull-eye bearing is slidably arranged on the quick-change frame 1, and preferably, the sliding direction of the bull-eye bearing on the quick-change frame 1 is arranged perpendicularly to the mounting surface 3, so that the sliding direction of the bull-eye bearing is along the direction perpendicular to the mounting surface 3, and in addition, the axis direction of the bull-eye bearing is arranged along the sliding direction thereof. Among them, the quick-change frame 1 is arranged in a rectangular ring shape, the bull-eye bearing is arranged in multiple, and the bull-eye bearing array is arranged on the ring-shaped quick-change frame 1, as shown in

[0034] The welding fixture quick-change device of the present application not only realizes the sliding of the welding fixture 6 on the bearing 4, but also realizes the locking function of the welding fixture 6 along the sliding direction on the quick-change frame 1 through the sliding movement of the bearing 4, so that the welding fixture quick-change device of the present application can realize the constraint function of the welding fixture 6 in each direction on the quick-change frame 1 through one locking portion 2, which is simple and reliable in structure, and also reduces the design cost.

[0035] In one embodiment, the quick-change frame 1 includes a support plate 10, and the support plate 10 is provided with a mounting seat 11, the mounting seat 11 includes a sleeve 12 and a cover plate 13 connected together, and a sliding groove 7 is formed between the sleeve 12 and the cover plate 13.

[0036] The welding fixture quick-change device of the present application includes a mounting seat 11, and the bull-eye bearing is slidably arranged on the mounting seat 11. Specifically, as shown inFigure 9 As shown, the quick-change frame 1 comprises a support plate 10, the support plate 10 is used to support the bull-eye bearing, and the bull-eye bearing is used to support the welding fixture 6 through the rolling body 5. Further, the mounting seat 11 comprises a sleeve 12 and a cover plate 13 connected with each other, the sleeve 12 and the cover plate 13 are connected through corresponding bolts. The sleeve 12 is hollow inside, so that the cover plate 13 and the sleeve 12 are connected to form a sliding groove 7 inside, so that the bull-eye bearing is slidably arranged in the sliding groove 7 formed by the sleeve 12 and the cover plate 13.

[0037] In one embodiment, the outer shell 8 of the bearing 4 is slidably arranged in the sliding groove 7, and a first compression spring 9 is arranged between the outer shell 8 of the bearing 4 and the groove bottom of the sliding groove 7.

[0038] The welding fixture quick-change device of the present application is provided with the first compression spring 9 between the bull-eye bearing and the quick-change frame 1, so as to facilitate the sliding movement of the bull-eye bearing. Specifically, as shown in Figure 8 and Figure 9 The cover plate 13 and the sleeve 12 are connected to form a sliding groove 7 inside, and the outer shell 8 of the bull-eye bearing is slidably arranged in the sliding groove 7, so as to facilitate the sliding movement of the bull-eye bearing. Preferably, the axis of the sliding groove 7 is perpendicular to the mounting surface 3. Further, the first compression spring 9 is arranged between the bull-eye bearing and the quick-change frame 1, that is, the first compression spring 9 is arranged between the outer shell 8 of the bull-eye bearing and the groove bottom of the sliding groove 7. Under the elastic force of the first compression spring 9, the bull-eye bearing is always located at the groove top position of the sliding groove 7, that is, the top surface of the outer shell 8 of the bull-eye bearing is in contact with the groove top of the sliding groove 7. At this time, the top end of the rolling body 5 of the bull-eye bearing is always above the mounting surface 3, so that the welding fixture 6 can be slidably arranged on the rolling body 5 of the bull-eye bearing at this time, so that the welding fixture 6 can be easily moved by the worker. The axis direction of the first compression spring 9 is arranged along the axis direction of the bull-eye bearing.

[0039] In one embodiment, the quick-change frame 1 further comprises a support frame 14, the support frame 14 is arranged at the bottom of the support plate 10, the support frame 14 is provided with a containing cavity 15, the cover plate 13 is arranged at the bottom of the sleeve 12, the top end of the sleeve 12 is arranged on the support plate 10, and the bottom end of the sleeve 12 and the cover plate 13 are located in the containing cavity 15.

[0040] The quick-change frame 1 of the present application comprises the support plate 10 and the support frame 14. Specifically, the support plate 10 is connected with the support frame 14, and the support plate 10 is arranged at the top of the support frame 14, as shown in Figure 1 and Figure 2As shown, the support frame 14 serves as an intermediate connecting piece between the quick-change frame 1 and the corresponding rotary drive mechanism 32, so that the quick-change frame 1 can be driven to rotate by the rotary drive mechanism 32, so as to facilitate the execution of the corresponding welding operation. Further, as shown Figure 8 and Figure 9 As shown, the hollow processing in the support frame 14 forms an accommodating cavity 15, the top end of the sleeve 12 is connected to the support plate 10, and the cover plate 13 is connected to the bottom end of the sleeve 12. Therefore, the bottom end of the sleeve 12 and the cover plate 13 are located in the accommodating cavity 15 of the support frame 14 to accommodate the mounting seat 11 through the accommodating cavity 15, and the support frame 14 can protect the mounting seat 11 and the bull-eye bearing in the accommodating cavity 15 to a certain extent.

[0041] In one embodiment, a first sliding hole 16 is arranged at one end of the sleeve 12 away from the cover plate 13, a second sliding hole 17 is arranged on the cover plate 13, and a mounting portion 18 is arranged at one end of the housing 8 of the bearing 4 away from the rolling body 5. The rolling body 5 of the bearing 4 is slidably arranged in the first sliding hole 16 along the sliding direction of the bearing 4, and the mounting portion 18 is slidably arranged in the second sliding hole 17.

[0042] The bull-eye bearing of the welding clamp quick-change device of the present application is slidably arranged on the mounting seat 11. Specifically, as shown Figure 9 The bull-eye bearing includes a housing 8, a rolling body 5, and a mounting portion 18. The rolling body 5 of the bull-eye bearing is located at the top end of the housing 8, the mounting portion 18 of the bull-eye bearing is located at the bottom end of the housing 8, and the housing 8 of the bull-eye bearing is slidably arranged in the sliding groove 7. Further, a first sliding hole 16 is arranged at one end of the sleeve 12 away from the cover plate 13, that is, the first sliding hole 16 is arranged at the top end of the sleeve 12; a second sliding hole 17 is arranged on the cover plate 13, and the first sliding hole 16 and the second sliding hole 17 are arranged at the top end and the bottom end of the sliding groove 7, respectively, and both the first sliding hole 16 and the second sliding hole 17 are in communication with the sliding groove 7. When the housing 8 of the bull-eye bearing is slidably arranged in the sliding groove 7, the rolling body 5 of the bull-eye bearing is slidably arranged in the first sliding hole 16 along the sliding direction, and the mounting portion 18 of the bull-eye bearing is slidably arranged in the second sliding hole 17 along the sliding direction, thereby realizing the sliding movement of the bull-eye bearing in the mounting seat 11.

[0043] In one embodiment, a first limiting surface 19 is formed at one end of the housing 8 of the bearing 4 away from the rolling body 5, a second limiting surface 20 is formed at one end of the cover plate 13 close to the housing 8, and the first compression spring 9 is arranged between the first limiting surface 19 and the second limiting surface 20.

[0044] The first compression spring 9 of the welding clamp quick-change device of the present application is arranged between the bull-eye bearing and the quick-change frame 1. Specifically, as shownFigure 9 As shown in the drawings, the diameter of the mounting portion 18 of the bull-eye bearing is smaller than the diameter of the shell 8, so that a step surface is formed between the mounting portion 18 of the bull-eye bearing and the shell 8, which serves as a first limiting surface 19, that is, the step surface at the end of the shell 8 of the bull-eye bearing away from the rolling body 5 forms the first limiting surface 19; after the cover plate 13 is connected to the sleeve 12, the top surface of the cover plate 13 forms the groove bottom of the sliding groove 7, which serves as a second limiting surface 20, that is, the end of the cover plate 13 close to the shell 8 forms the second limiting surface 20; the first compression spring 9 is arranged between the first limiting surface 19 and the second limiting surface 20, so that one end of the first compression spring 9 abuts against the cover plate 13 of the mounting seat 11, and the other end of the first compression spring 9 abuts against the shell 8 of the bull-eye bearing, so that the bull-eye bearing is always located at the top end of the sliding groove 7, at this time, the top end of the rolling body 5 of the bull-eye bearing is located above the mounting surface 3, facilitating the movement of the welding clamp 6 on the quick-change frame 1.

[0045] In one of the embodiments, the welding clamp 6 comprises a clamp bottom plate 21, the clamp bottom plate 21 is provided with a first positioning portion, the quick-change frame 1 is provided with a first matching portion, and the first positioning portion and the first matching portion cooperate to form a first positioning mechanism.

[0046] The welding clamp quick-change device of the present application is provided with a first positioning mechanism to realize the pre-positioning of the welding clamp 6 and the quick-change frame 1. Specifically, as shown in Figure 3 and Figure 4 The welding clamp 6 comprises a clamp bottom plate 21, the clamp bottom plate 21 is provided with a first positioning portion, and the first positioning portion is a V-shaped groove 22; the support plate 10 of the quick-change frame 1 is provided with a first matching portion, and the first matching portion is a positioning column 23; the V-shaped groove 22 and the positioning column 23 cooperate to realize the pre-positioning between the clamp bottom plate 21 of the welding clamp 6 and the support plate 10 of the quick-change frame 1. Further, when the staff moves the welding clamp 6 on the rolling body 5 of the bull-eye bearing, the V-shaped groove 22 on the clamp bottom plate 21 of the welding clamp 6 first contacts the positioning column 23, and the abutting action of the groove wall of the V-shaped groove 22 and the positioning column 23 makes the clamp bottom plate 21 be located at a pre-positioning position relative to the support plate 10, so as to realize the pre-positioning of the clamp bottom plate 21 relative to the support plate 10 and reduce the positioning and aligning time between the welding clamp 6 and the quick-change frame 1.

[0047] In one of the embodiments, a second positioning portion is further included, the clamp bottom plate 21 is provided with a second matching portion, the quick-change frame 1 is provided with a third matching portion, and the first matching portion, the second matching portion and the third matching portion cooperate to form a second positioning mechanism.

[0048] The welding clamp quick-change device of the present application is provided with a second positioning mechanism to realize the precise positioning of the welding clamp 6 and the quick-change frame 1. Specifically, as shown in Figure 6 andFigure 7 As shown, the welding fixture quick-change device of the present application comprises a second positioning part, which is a positioning pin 24. The welding fixture 6 is provided with a second adapting part, which is a first pin hole 25, on the fixture base plate 21. The quick-change frame 1 is provided with a third adapting part, which is a second pin hole 26, on the support plate 10. The positioning pin 24 is simultaneously arranged in the first pin hole 25 and the second pin hole 26, so as to realize accurate positioning of the fixture base plate 21 and the support plate 10 through the positioning pin 24.

[0049] In one of the embodiments, the positioning pin 24 comprises a pin body 27, which is provided with a sliding groove 28 along the radial direction. The two ends of the sliding groove 28 are slidably provided with positioning balls 29. A second compression spring 37 is arranged between the two positioning balls 29. At least part of the volume of the two positioning balls 29 is located outside the sliding groove 28. The pin body 27 is matched with the hole diameter of the first pin hole 25 and the second pin hole 26, and the positioning balls 29 pass through the bottom end of the second pin hole 26.

[0050] The positioning pin 24 of the welding fixture quick-change device of the present application is provided with a positioning pin 24, so as to improve the positioning accuracy. Specifically, as shown in the figures, the positioning pin 24 is arranged in the first pin hole 25 and the second pin hole 26, so as to realize accurate positioning of the fixture base plate 21 and the support plate 10 through the positioning pin 24. Figure 6 and Figure 7As shown, the positioning pin 24 comprises a handle 33, an intermediate piece 34 and a pin body 27, the diameter of the intermediate piece 34 is larger than that of the pin body 27, and the intermediate piece 34 is located between the pin body 27 and the handle 33. Further, the first sleeve 35 is arranged on the clamp base plate 21, the first pin hole 25 is arranged on the first sleeve 35, the second sleeve 36 is arranged on the support plate 10, the second pin hole 26 is arranged on the second sleeve 36, and the pin body 27 is arranged in the first pin hole 25 and the second pin hole 26 at the same time, so as to realize the positioning of the clamp base plate 21 relative to the support plate 10 through the pin body 27, wherein the stepped surface formed by the intermediate piece 34 and the pin body 27 faces the positioning pin 24 and plays a limiting role. The diameter of the pin body 27 is matched with the inner diameter of the first pin hole 25 and the second pin hole 26, so as to improve the positioning accuracy. Further, the sliding groove 28 is arranged on the pin body 27 in the radial direction, two positioning balls 29 are arranged in the sliding groove 28, the two ends of the sliding groove 28 are riveted, so that the two positioning balls 29 cannot be separated from the sliding groove 28, and the two positioning balls 29 are always located in the sliding groove 28. In addition, the second compression spring 37 is arranged between the two positioning balls 29, so that one end of the second compression spring 37 abuts against one of the positioning balls 29, and the other end of the second compression spring 37 abuts against the other positioning ball 29. Therefore, the two positioning balls 29 are located at the two ends of the sliding groove 28 respectively, and part of the volume of the positioning ball 29 is located outside the sliding groove 28 at this time. The specific positioning process of the positioning pin 24 is as follows: after the clamp base plate 21 and the support plate 10 are pre-positioned by the V-shaped groove 22 and the positioning column 23, the first pin hole 25 on the clamp base plate 21 and the second pin hole 26 on the support plate 10 are aligned, then the staff moves the positioning pin 24 through the handle 33, so that the pin body 27 of the positioning pin 24 is inserted into the first pin hole 25 on the clamp base plate 21, as shown in the state. Figure 5 When the positioning ball 29 contacts the inner wall of the first pin hole 25, the pin body 27 is continuously inserted into the first pin hole 25, and in this process, the positioning ball 29 slides into the sliding groove 28 under the extrusion of the inner wall of the first pin hole 25, and the second compression spring 37 is further compressed. Continue to move the positioning pin 24, the pin body 27 is inserted into the second pin hole 26 on the support plate 10, and at this time the positioning ball 29 abuts against the inner wall of the second pin hole 26; continue to move the positioning pin 24, so that the positioning ball 29 is away from the second pin hole 26, and under the elastic force of the second compression spring 37, the two positioning balls 29 return to the position located at the two ends of the sliding groove 28. At this time, the distance between the two ends of the two positioning balls 29 is greater than the inner diameter of the second pin hole 26, so as to prevent the positioning pin 24 from being separated from the first pin hole 25 on the clamp base plate 21 and the second pin hole 26 on the support plate 10, and affect the positioning accuracy. The bottom end of the pin body 27 can be accommodated in the accommodating cavity 15 of the support frame 14.

[0051] In one of the embodiments, a locking adapter is further included, the locking portion 2 is adapted to the locking adapter to form a locking mechanism, the locking mechanism is used to lock the welding fixture 6 on the mounting surface 3.

[0052] The welding fixture quick change device of the present application realizes that the welding fixture 6 is locked on the mounting surface 3 along the sliding direction through the locking portion 2 and the locking adapter. Specifically, as shown in Figure 8 and Figure 10 The welding fixture quick change device of the present application includes a locking adapter, the locking adapter is a locking bolt 30, the locking portion 2 is a locking threaded hole provided on the support plate 10, and the clamp bottom plate 21 is provided with a locking through hole 31 for the locking bolt 30 to pass through. Therefore, when the clamp bottom plate 21 is pre-positioned in place with the support plate 10 through the V-shaped groove 22 and the positioning column 23, and the precise positioning of the clamp bottom plate 21 and the support plate 10 is realized through the positioning pin 24 and the first pin hole 25 and the second pin hole 26, the locking threaded hole and the locking through hole 31 are aligned, the staff inserts the locking bolt 30 through the locking through hole 31 and matches the locking threaded hole, at this time, the top end of the rolling body 5 on the bullseye bearing is located above the mounting surface 3, and the clamp bottom plate 21 of the welding fixture 6 is slidably arranged on the rolling body 5 of the bullseye bearing. When the staff continuously locks the locking bolt 30 in the locking threaded hole, the clamp bottom plate 21 moves downward along the sliding direction under the action of the locking bolt 30, the clamp bottom plate 21 contacts the rolling body 5 on the bullseye bearing, therefore, the clamp bottom plate 21 pushes the bullseye bearing downward, so that the bullseye bearing moves downward in the sliding groove 7, and the first compression spring 9 is further compressed, until the bottom surface of the clamp bottom plate 21 contacts the mounting surface 3, the staff locks the locking bolt 30, realizes the locking of the clamp bottom plate 21 along the sliding direction, and only needs to match the locking bolt 30 with the locking threaded hole to realize the freedom constraint of the welding fixture 6 in each direction, realizes the limiting of the welding fixture 6, and the structure is simple and reliable.

[0053] In one of the embodiments, a rotating drive mechanism 32 is further included, and the quick change frame 1 is arranged on the output shaft of the rotating drive mechanism 32.

[0054] The rotating drive mechanism 32 can adopt a motor or other corresponding driving device generating rotary motion, and the output shaft of the rotating drive mechanism 32 is connected with the quick change frame 1, so as to transmit the rotary power to the quick change frame 1, wherein the support frame 14 serves as an intermediate connecting piece of the quick change frame 1 and the rotating drive mechanism 32, so that the quick change frame 1 can realize rotary motion under the drive of the rotating drive mechanism 32, so as to perform corresponding welding operation.

[0055] The specific working process is as follows:

[0056] Pre-positioning stage, the welding clamp 6 is placed on the rolling body 5 of the bull's eye bearing on the quick-change frame 1 in the pre-positioning stage, at this time, the top end of the rolling body 5 of the bull's eye bearing is above the installation surface 3, and under the drive of the rotary drive mechanism 32, the welding clamp 6 and the quick-change frame 1 are placed in the horizontal direction, the distance between the top end of the rolling body 5 of the bull's eye bearing and the installation surface 3 is the first distance L1, as shown in Figure 11 The first distance L1 shown in FIG. A is 2.5mm-3.5mm, preferably 3mm.

[0057] Pre-positioning stage, the welding clamp 6 is placed on the rolling body 5 of the bull's eye bearing on the quick-change frame 1 in the pre-positioning stage, at this time, the welding clamp 6 is placed on the rolling body 5 of the bull's eye bearing, at this time, the bull's eye bearing moves a certain distance in the sliding groove 7 under the gravity of the welding clamp 6, but the top end of the rolling body 5 of the bull's eye bearing is still above the installation surface 3, the distance between the top end of the rolling body 5 of the bull's eye bearing and the installation surface 3 is the second distance L2, the second distance L2 is less than the first distance L1, as shown in Figure 11 The second distance L2 shown in FIG. B is 1mm-2mm, preferably 1.5mm. The difference between the first distance L1 and the second distance L2 is related to the parameters of the first compression spring 9 and the weight of the welding clamp 6, and is designed according to actual needs. The worker pushes the welding clamp 6, so that the V-shaped groove 22 on the clamp bottom plate 21 of the welding clamp 6 is in contact with the positioning column 23, realizing the pre-positioning of the welding clamp 6 relative to the quick-change frame 1.

[0058] Precise positioning stage, after the welding clamp 6 is pre-positioned relative to the quick-change frame 1, the first pin hole 25 is aligned with the second pin hole 26, the worker inserts the positioning pin 24 into the first pin hole 25 and the second pin hole 26 in turn, so as to realize the precise positioning between the welding clamp 6 and the quick-change frame 1 through the cooperation of the positioning pin 24 with the first pin hole 25 and the second pin hole 26.

[0059] Locking and positioning stage, after the precise positioning between the welding clamp 6 and the quick-change frame 1 is realized through the cooperation of the positioning pin 24 with the first pin hole 25 and the second pin hole 26, the locking threaded hole is aligned with the locking through hole 31, the worker inserts the locking bolt 30 into the locking threaded hole through the locking through hole 31, and continuously locks the locking bolt 30, the clamp bottom plate 21 moves downward along the sliding direction under the action of the locking bolt 30, because the clamp bottom plate 21 is always in contact with the rolling body 5 of the bull's eye bearing, therefore, the clamp bottom plate 21 pushes the bull's eye bearing downward, so that the bull's eye bearing moves downward in the sliding groove 7, the first compression spring 9 is further compressed, until the bottom surface of the clamp bottom plate 21 is in contact with the installation surface 3, the worker locks the locking bolt 30, realizing the locking of the clamp bottom plate 21 along the sliding direction, at this time, the top end of the rolling body 5 of the bull's eye bearing is flush with the installation surface 3, therefore, the distance between the top end of the rolling body 5 of the bull's eye bearing and the installation surface 3 is 0mm, as shown in Figure 11The middle C is shown in the figure.

[0060] It should be noted that the above only the preferred embodiments of the present application and the use of technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, those skilled in the art can make various obvious changes, re-adjustment and replacement without departing from the scope of the present application. Therefore, although the above embodiments of the present application has been described in more detail, the present application is not limited to the above embodiments, without departing from the concept of the present application, but also includes more other equivalent embodiments, and the scope of the present application is determined by the appended claims.

Claims

1. A welding fixture quick change device, characterized in that: The invention comprises a quick-change frame (1), wherein the quick-change frame (1) is provided with a locking portion (2) and a mounting surface (3), wherein a bearing (4) is slidably provided on the quick-change frame (1), wherein a rolling body is provided on the bearing (4), wherein the rolling body (5) is rotatably provided relative to the mounting surface (3), and when the end of the rolling body (5) is located above the mounting surface (3), the welding fixture (6) is slidably provided on the rolling body (5), and when the end of the rolling body (5) is flush with the mounting surface (3) in the left-right direction or is located below the mounting surface (3), the welding fixture (6) is locked on the mounting surface (3) through the locking portion (2).

2. The welding fixture quick change device according to claim 1, characterized in that: The quick-change rack (1) comprises a support plate (10), a mounting seat (11) is provided on the support plate (10), the mounting seat (11) comprises a sleeve (12) and a cover plate (13) connected to each other, and a sliding groove (7) is formed between the sleeve (12) and the cover plate (13).

3. The welding fixture quick change device according to claim 2, characterized in that: The outer shell (8) of the bearing (4) is slidably arranged in the sliding groove (7), and a first compression spring (9) is arranged between the outer shell (8) of the bearing (4) and the groove bottom of the sliding groove (7).

4. The welding fixture quick change device according to claim 2, characterized in that: The quick-change rack (1) further comprises a support frame (14), wherein the support frame (14) is arranged at the bottom of the support plate (10), and an accommodating cavity (15) is arranged in the support frame (14), the cover plate (13) is arranged at the bottom of the sleeve (12), the top end of the sleeve (12) is arranged on the support plate (10), and the bottom end of the sleeve (12) and the cover plate (13) are located in the accommodating cavity (15).

5. The welding fixture quick change device according to claim 4, characterized in that: A first sliding hole (16) is provided on the end of the sleeve (12) away from the cover plate (13), a second sliding hole (17) is provided on the cover plate (13), and a mounting portion (18) is provided on the end of the housing (8) of the bearing (4) away from the rolling element (5). The rolling element (5) of the bearing (4) is slidably arranged in the first sliding hole (16) along the sliding direction of the bearing (4), and the mounting portion (18) is slidably arranged in the second sliding hole (17).

6. The welding fixture quick change device according to claim 3, characterized in that: A first limiting surface (19) is formed on the end of the housing (8) of the bearing (4) away from the rolling element (5), a second limiting surface (20) is formed on the end of the cover plate (13) close to the housing (8), and the first compression spring (9) is arranged between the first limiting surface (19) and the second limiting surface (20).

7. The welding fixture quick change device according to claim 1, characterized in that: The welding fixture (6) comprises a fixture base plate (21), a first positioning portion is provided on the fixture base plate (21), a first adapting portion is provided on the quick-change frame (1), and the first positioning portion and the first adapting portion are adapted to form a first positioning mechanism.

8. The welding fixture quick change device according to claim 7, characterized in that: It also includes a second positioning portion, a second adapter portion is provided on the fixture base plate (21), a third adapter portion is provided on the quick-change frame (1), and the second positioning portion is adapted to the second adapter portion and the third adapter portion to form a second positioning mechanism.

9. The welding fixture quick change device according to claim 1, characterized in that: It also includes a locking adapter portion, wherein the locking portion (2) and the locking adapter portion are adapted to form a locking mechanism, and the locking mechanism is used to lock the welding fixture (6) on the mounting surface (3).

10. The welding fixture quick change device according to claim 1, characterized in that: It also includes a rotary drive mechanism (32), and the quick-change rack (1) is arranged on the output shaft of the rotary drive mechanism (32).

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