Automobile part welding clamp

Abstract

The invention relates to the technical field of welding clamps, in particular to an automobile part welding clamp which comprises a plurality of basic clamps arranged on a workbench and a mounting frame arranged on the workbench and further comprises an adjusting air cylinder arranged on the mounting frame. The chuck placing disc is arranged at the top of the adjusting air cylinder, and the quick-change chucks which are located in the chuck placing disc and are not in use are all in a horizontal state; the automobile part welding clamp comprises a chuck containing disc used for containing multiple quick-change chucks, a switching unit arranged on the chuck containing disc and used for driving the multiple quick-change chucks in the chuck containing disc to rotate and switch, and an unfolding and folding unit arranged on the chuck containing disc. And the horizontal state is kept in the non-use state, the space occupied by a traditional quick-change chuck storage mode is remarkably reduced, and due to the design of the switching unit and the unfolding and folding unit, the quick-change chuck is more compact and efficient to replace and store.

Description

Technical Field

[0001] The present invention relates to the technical field of welding jigs, and particularly to a welding jig for automotive parts. Background Art

[0002] In the automotive manufacturing industry, as a key component of the automotive power system, the exhaust pipe's quality and performance directly affect the vehicle's emission efficiency and overall performance. Therefore, the welding operation of the exhaust pipe has always been an important link in the automotive production process. To improve the flexibility and efficiency of the welding operation, the quick-change chuck technology has emerged. It allows operators to quickly replace different specifications or types of chucks without disassembling the jig to meet the welding requirements of different parts.

[0003] However, in actual use, we found that the traditional storage method of quick-change chucks is usually to centrally place multiple chucks on a larger placement tray. Although this design facilitates the centralized management of chucks, it also brings problems such as large space occupation and many operation interferences. Especially during the welding of the exhaust pipe, due to the limitations of the welding equipment and welding path, operators often need to frequently move or avoid this placement tray for storing quick-change chucks to ensure the smooth progress of the welding operation. This not only increases the operation difficulty and labor intensity but may also lead to a decrease in welding efficiency and fluctuations in welding quality. For this reason, we propose a welding jig for automotive parts. Summary of the Invention

[0004] One technical problem to be solved by this application is: how to design a quick-change type welding jig for automotive parts that can reduce the space of the placement tray.

[0005] To solve the above technical problem, the embodiments of this application provide a welding jig for automotive parts, including a plurality of basic jigs respectively arranged on a workbench and a mounting rack arranged on the workbench, and further including:

[0006] An adjusting cylinder, which is arranged on the mounting rack;

[0007] A chuck placement tray, which is arranged on the top of the adjusting cylinder, and the quick-change chucks that are not in use in the chuck placement tray are all in a horizontal state;

[0008] A switching unit, which is arranged on the chuck placement tray and is used to drive the rotation and switching of multiple quick-change chucks in the chuck placement tray, and make the quick-change chuck in use extend towards the exhaust pipe side;

[0009] A deploying and retracting unit, which is arranged on the chuck placement tray and is used to turn the quick-change chuck to be used from a horizontal state to a vertical state, and turn the used quick-change chuck from a vertical state to a horizontal state.

[0010] In some embodiments, the switching unit includes a polygonal block disposed in the collet placement disc. A rotating member is provided on the collet placement disc for driving the polygonal block to rotate. A contraction member is provided on the collet placement disc and is used in cooperation with the rotating member to control the quick-change collet in use within the collet placement disc to extend towards the exhaust pipe side when the polygonal block rotates.

[0011] In some embodiments, the rotating member includes a drive motor disposed on the collet placement disc. A fixed shaft is rotatably provided on the collet placement disc. The output end of the drive motor is connected to the fixed shaft, and the polygonal block is disposed on the fixed shaft.

[0012] In some embodiments, the contraction member includes a fixed guide rail disposed on the collet placement disc. Multi-stage telescopic tubes are provided on each surface of the polygonal block. Fixed seats are provided at the ends of the multi-stage telescopic tubes. Guide rollers that are used in cooperation with the fixed guide rail are rotatably provided on the fixed seats. A return spring is provided between each surface of the polygonal block and the fixed seat, and the return spring is located inside the multi-stage telescopic tube.

[0013] In some embodiments, the unfolding and folding unit includes two side plates respectively disposed on both sides of the bottom of the mounting seat. A connecting member is provided between the two side plates for connecting the quick-change collet. A positioning member is provided between the two side plates and the rotating block for locking and positioning the rotating block. An adjusting member is provided on the collet placement disc for adjusting the state of the quick-change collet.

[0014] In some embodiments, the connecting member includes a rotating shaft rotatably provided between the two side plates. Rotating blocks are provided on the rotating shaft, and the quick-change collets are respectively provided on adjacent rotating blocks.

[0015] In some embodiments, the side plate and the mounting seat are connected by bolts, and the rotating block and the quick-change collet are connected by bolts.

[0016] In some embodiments, the positioning member includes two fixed springs respectively disposed on both sides of the rotating block. Locking blocks are provided at the ends of the fixed springs, and two card slots that are used in cooperation with the locking blocks are respectively formed on the side plates.

[0017] In some embodiments, the adjusting member includes an electric push rod disposed on the chuck placement plate. A displacement seat is provided at the end of the electric push rod. A first switching motor is provided on the displacement seat. A rotating rod is provided at the output end of the first switching motor. A shifting rod is provided on the rotating rod. The shifting rod is in contact with the rotating block and is used to rotate the quick-change chuck to be used from a horizontal state to a vertical state. A second switching motor is provided on the chuck placement plate. A rotating rod is provided at the output end of the second switching motor. The rotating rod is in contact with the rotation and is used to rotate the used quick-change chuck from a vertical state to a horizontal state.

[0018] In some embodiments, the adjusting member includes a fixed gear disposed on the rotating shaft. A first fixed rack and a second fixed rack are respectively provided on both sides of the chuck placement plate.

[0019] The present invention has at least the following beneficial effects:

[0020] 1. Space optimization and efficient utilization: By centrally placing the quick-change chucks in the chuck placement plate and keeping them in a horizontal state when not in use, the space occupied by the traditional quick-change chuck storage method is significantly reduced. The design of the switching unit and the unfolding and folding unit makes the replacement and storage of the quick-change chucks more compact and efficient, improving the utilization rate of the workbench;

[0021] 2. Improving welding efficiency and flexibility: The switching unit can automatically drive the rotation and switching of multiple quick-change chucks in the chuck placement plate, enabling the quick-change chuck in use to be quickly and accurately positioned on one side of the exhaust pipe, reducing the time for manual searching and positioning of the chuck. The unfolding and folding unit can automatically rotate the quick-change chuck to be used from a horizontal state to a vertical state and rotate the used quick-change chuck from a vertical state to a horizontal state, further improving the continuity and efficiency of the welding operation;

[0022] 3. Improving the level of production automation The design of this fixture realizes the automatic switching and unfolding and folding of the quick-change chuck, improves the automation level of the production line, and reduces the need for manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a schematic diagram of the structure of the mounting rack and the chuck placement plate of the present invention;

[0025] Figure 3 is a schematic diagram of the bottom structure of the chuck placement plate of the present invention;

[0026] Figure 4 is a schematic diagram of the partial sectional structure of the chuck placement plate of the present invention;

[0027] Figure 5Schematic cross-sectional structure diagram of the multi-stage telescopic tube of the present invention;

[0028] Figure 6 Exploded schematic diagram of partial structure after sectional view of the deployment and retraction unit of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of area A in;

[0030] Figure 8 Schematic diagram of each structure on the fixed seat of the present invention;

[0031] Figure 9 For the present invention Figure 4 Enlarged schematic diagram of area B in;

[0032] Figure 10 For the present invention Figure 4 Enlarged schematic diagram of area C in;

[0033] Figure 11 Schematic diagram of the adjusting member in Embodiment 2 of the present invention;

[0034] Figure 12 For the present invention Figure 11 Enlarged schematic diagram of area D in;

[0035] Figure 13 For the present invention Figure 11 Enlarged schematic diagram of area E in.

[0036] In the figure: 1. Basic fixture; 2. Mounting frame; 3. Switching unit; 31. Polygonal block; 4. Rotating member; 41. Driving motor; 42. Fixed shaft; 5. Shrinking member; 51. Fixed guide rail; 52. Multi-stage telescopic tube; 53. Fixed seat; 54. Guide roller; 55. Return spring; 6. Deployment and retraction unit; 61. Side plate; 7. Connecting member; 71. Rotating shaft; 72. Rotating block; 8. Positioning member; 81. Fixed spring; 82. Locking block; 83. Card slot; 9. Adjusting member; 91. Electric push rod; 92. Shifting seat; 93. First switching motor; 94. Rotating rod; 95. Poking rod; 96. Second switching motor; 97. Rotating rod; 98. Fixed gear; 99. First fixed rack; 910. Second fixed rack; 10. Adjusting cylinder; 11. Chuck placement plate. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Example 1

[0039] Please refer to Figures 1-10 , the present invention provides a technical solution:

[0040] An automobile parts welding fixture, including a plurality of basic fixtures 1 respectively arranged on the workbench and a mounting bracket 2 arranged on the workbench. The basic fixture 1 includes various fixture structures with different sizes and shapes for clamping the exhaust pipe structure placed on the workbench. The mounting bracket 2 is used to place the automobile parts welding fixture mentioned in this solution. In this solution, only one such fixture is provided. During actual use, it can be adjusted according to factors such as the shape of the workpiece, welding position, and welding process without limitation. It also includes:

[0041] An adjusting cylinder 10, the adjusting cylinder 10 is arranged on the mounting bracket 2 and is used to control the height position of the welding fixture to ensure the normal progress of the welding work;

[0042] A chuck placement disk 11, the chuck placement disk 11 is arranged on the top of the adjusting cylinder 10. The quick-change chucks that are not in use in the chuck placement disk 11 are all in a horizontal state. This way, the quick-change chucks existing in the chuck placement disk 11 do not occupy too much space, thereby directly reducing the size of the chuck placement disk 11;

[0043] A switching unit 3, the switching unit 3 is arranged on the chuck placement disk 11 and is used to drive the rotation and switching of a plurality of quick-change chucks in the chuck placement disk 11 and make the quick-change chuck in use extend towards the exhaust pipe side;

[0044] The switching unit 3 includes a polygonal block 31 arranged in the chuck placement disk 11. A rotating member 4 is arranged on the chuck placement disk 11 and is used to drive the rotation of the polygonal block 31. A contraction member 5 that cooperates with the rotating member 4 is arranged on the chuck placement disk 11 and is used to control the quick-change chuck in use in the chuck placement disk 11 to extend towards the exhaust pipe side when the polygonal block 31 rotates;

[0045] The rotating member 4 includes a driving motor 41 arranged on the chuck placement disk 11. A fixed shaft 42 is rotatably arranged on the chuck placement disk 11. The output end of the driving motor 41 is connected to the fixed shaft 42, and the polygonal block 31 is arranged on the fixed shaft 42;

[0046] The driving motor 41 rotates to drive the fixed shaft 42 to rotate, and the fixed shaft 42 rotates to drive the polygonal block to rotate;

[0047] The contraction member 5 includes a fixed guide rail 51 disposed on the chuck placement plate 11. A multi-stage telescopic tube 52 is provided on each surface of the polygonal block 31. A fixed seat 53 is provided at the end of each multi-stage telescopic tube 52. A guide roller 54 that cooperates with the fixed guide rail 51 is rotatably provided on each fixed seat 53. A return spring 55 is provided between each surface of the polygonal block 31 and the fixed seat 53, and the return spring 55 is located inside the multi-stage telescopic tube 52;

[0048] The fixed guide rail 51 has a water-drop shape and is composed of a linear guide rail and an arc guide rail, with strong adaptability, good flexibility, and long service life;

[0049] When the polygonal block 31 rotates, under the elastic force of the return spring 55, the guide roller 54 on the fixed seat 53 always fits the fixed guide rail 51, and the multi-stage telescopic tube 52 is telescopically adjusted according to the shape of the fixed guide rail 51, further ensuring the stable displacement of the fixed seat 53;

[0050] The unfolding and folding unit 6 is provided on the chuck placement plate 11 and is used to rotate the quick-change chuck to be used from a horizontal state to a vertical state and rotate the used quick-change chuck from a vertical state to a horizontal state;

[0051] The unfolding and folding unit 6 includes two side plates 61 respectively provided on both sides of the bottom of the mounting seat. A connecting member 7 is provided between the two side plates 61 for connecting the quick-change chuck. A positioning member 8 is provided between the two side plates 61 and the rotating block 72 for locking and positioning the rotating block 72. An adjusting member 9 is provided on the chuck placement plate 11 for adjusting the state of the quick-change chuck;

[0052] The connecting member 7 includes a rotating shaft 71 rotatably provided between the two side plates 61. Rotating blocks 72 are provided on the rotating shaft 71, and the quick-change chucks are respectively provided on adjacent rotating blocks 72;

[0053] The rotation of the rotating shaft 71 can drive the synchronous rotation adjustment of the rotating block 72 and the quick-change chuck;

[0054] The side plate 61 and the mounting seat are connected by bolts, and the rotating block 72 and the quick-change chuck are connected by bolts. Through the connection of bolts, each structure can be replaced according to actual needs. For example, when the quick-change chuck cannot be used normally, a new quick-change joint can be replaced by removing the bolts between the rotating block 72 and the quick-change chuck. Another example is that when there is too much welding slag remaining on the surface of the rotating block 72 close to the side plate 61 and it cannot be used normally, it can also be replaced by removing the bolts between the side plate 61 and the mounting seat;

[0055] The positioning member 8 includes two fixing springs 81 respectively arranged on both sides of the rotating block 72. A locking block 82 is arranged at the end of the fixing spring 81, and two clamping grooves 83 which are used in cooperation with the locking block 82 are formed on the side plate 61;

[0056] When the rotating block 72 rotates, the fixing spring 81 always presses the locking block 82. When it enters another clamping groove 83, it will automatically engage, so as to replace the position of the rotating block 72 and lock the positioning;

[0057] The adjusting member 9 includes an electric push rod 91 arranged on the chuck placing disc 11. A shifting seat 92 is arranged at the end of the electric push rod 91. A first switching motor 93 is arranged on the shifting seat 92. A rotating rod 94 is arranged at the output end of the first switching motor 93. A shifting rod 95 is arranged on the rotating rod 94. The shifting rod 95 is in contact with the rotating block 72 and is used to turn the quick-change chuck to be used from a horizontal state to a vertical state. A second switching motor 96 is arranged on the chuck placing disc 11. A rotating rod 97 is arranged at the output end of the second switching motor 96. The rotating rod 97 is in contact with the rotation and is used to turn the used quick-change chuck from a vertical state to a horizontal state;

[0058] When the quick-change joint passes through the first switching motor 93, the electric push rod 91 starts to drive the shifting seat 92 to shift forward. After the shifting rod 95 is inserted into the rotating block 72, the first switching motor 93 starts to drive the rotating rod 94 and the shifting rod 95 to rotate. The shifting rod 95 drives the rotating block 72 to rotate, turning the quick-change chuck to be used from a horizontal state to a vertical state and entering the welding use area;

[0059] When the quick-change joint passes through the second switching motor 96, the second switching motor 96 starts to drive the rotating rod 97 to rotate. The rotating rod 97 drives the rotating block 72 to rotate, turning the used quick-change chuck from a vertical state to a horizontal state and entering the storage area.

[0060] During use, it can be replaced by itself according to the situation of the quick-change joint and the rotating block 72. Specifically, through the connection of bolts, each structure can be replaced according to actual needs:

[0061] When the quick-change chuck cannot be used normally, a new quick-change joint can be replaced by disassembling the bolt between the rotating block 72 and the quick-change chuck;

[0062] When too much welding slag remains on the surface of the rotating block 72 close to the side plate 61 and it cannot be used normally, it can also be replaced by disassembling the bolt between the side plate 61 and the mounting seat;

[0063] When the quick-change connector needs to be replaced, the driving motor 41 rotates to drive the fixed shaft 42 to rotate. The rotation of the fixed shaft 42 drives the polygonal block to rotate. When the polygonal block 31 rotates, under the elastic force of the return spring 55, the guiding roller 54 on the fixed seat 53 always fits the fixed guide rail 51, and the multi-stage telescopic tube 52 adjusts its length according to the shape of the fixed guide rail 51, further ensuring the stable displacement of the fixed seat 53;

[0064] When the quick-change connector passes by the first switching motor 93, the electric push rod 91 is activated to drive the displacement seat 92 to move forward. After the dial rod 95 is inserted into the rotating block 72, the first switching motor 93 is activated to drive the rotating rod 94 and the dial rod 95 to rotate. The dial rod 95 drives the rotating block 72 to rotate, turning the quick-change chuck to be used from the horizontal state to the vertical state and entering the welding use area;

[0065] When the quick-change connector passes by the second switching motor 96, the second switching motor 96 is activated to drive the rotating rod 97 to rotate. The rotating rod 97 drives the rotating block 72 to rotate, turning the used quick-change chuck from the vertical state to the horizontal state and entering the storage area.

[0066] Embodiment 2

[0067] Please refer to Figures 1-13 , the present invention provides a technical solution:

[0068] Different from Embodiment 1, this solution provides another implementation manner of the adjusting member 9:

[0069] An automotive parts welding fixture includes a plurality of basic fixtures 1 respectively arranged on the workbench and a mounting bracket 2 arranged on the workbench. The basic fixture 1 includes various fixture structures with different sizes and shapes for clamping the exhaust pipe structure placed on the workbench. The mounting bracket 2 is used to place the automotive parts welding fixture mentioned in this solution. In this solution, only one such fixture is provided. During actual use, it can be adjusted according to factors such as the shape of the workpiece, welding position, and welding process without limitation. It further includes:

[0070] An adjusting cylinder 10, which is arranged on the mounting bracket 2 and is used to control the height position of the welding fixture to ensure the normal progress of the welding work;

[0071] A chuck placement tray 11, which is arranged on the top of the adjusting cylinder 10. The quick-change chucks that are not in use in the chuck placement tray 11 are all in a horizontal state. This way, the quick-change chucks existing in the chuck placement tray 11 do not occupy too much space, thereby directly reducing the size of the chuck placement tray 11;

[0072] Switching unit 3, the switching unit 3 is arranged on the chuck placing disk 11, and is used to drive multiple quick-change chucks in the chuck placing disk 11 to rotate and switch, and make the quick-change chuck in use extend towards the exhaust pipe side;

[0073] The switching unit 3 includes a polygonal block 31 arranged in the chuck placing disk 11, a rotating member 4 is arranged on the chuck placing disk 11 and is used to drive the polygonal block 31 to rotate, and a contraction member 5 is arranged on the chuck placing disk 11 and is used in cooperation with the rotating member 4, and is used to control the quick-change chuck in use in the chuck placing disk 11 to extend towards the exhaust pipe side when the polygonal block 31 rotates;

[0074] The rotating member 4 includes a driving motor 41 arranged on the chuck placing disk 11, a fixed shaft 42 is rotatably arranged on the chuck placing disk 11, the output end of the driving motor 41 is connected to the fixed shaft 42, and the polygonal block 31 is arranged on the fixed shaft 42;

[0075] The driving motor 41 rotates to drive the fixed shaft 42 to rotate, and the fixed shaft 42 rotates to drive the polygonal block to rotate;

[0076] The contraction member 5 includes a fixed guide rail 51 arranged on the chuck placing disk 11, a multi-stage telescopic tube 52 is arranged on each surface of the polygonal block 31, a fixed seat 53 is arranged at the end of each multi-stage telescopic tube 52, a guide roller 54 used in cooperation with the fixed guide rail 51 is rotatably arranged on each fixed seat 53, a return spring 55 is arranged between each surface of the polygonal block 31 and the fixed seat 53, and the return spring 55 is located inside the multi-stage telescopic tube 52;

[0077] The fixed guide rail 51 has a water-drop shape structure and is composed of a straight guide rail and an arc guide rail, with strong adaptability, good flexibility and long service life;

[0078] When the polygonal block 31 rotates, under the elastic force of the return spring 55, the guide roller 54 on the fixed seat 53 always fits the fixed guide rail 51, and the multi-stage telescopic tube 52 is telescopically adjusted according to the shape of the fixed guide rail 51, further ensuring the stable displacement of the fixed seat 53;

[0079] Deployment and retraction unit 6, the deployment and retraction unit 6 is arranged on the chuck placing disk 11, and is used to turn the quick-change chuck to be used from a horizontal state to a vertical state, and turn the used quick-change chuck from a vertical state to a horizontal state;

[0080] The unfolding and folding unit 6 includes two side plates 61 respectively arranged on both sides of the bottom of the mounting base. A connecting member 7 is arranged between the two side plates 61 for connecting the quick-change chuck. A positioning member 8 is arranged between the two side plates 61 and the rotating block 72 for locking and positioning the rotating block 72. An adjusting member 9 is arranged on the chuck placing plate 11 for adjusting the state of the quick-change chuck;

[0081] The connecting member 7 includes a rotating shaft 71 rotatably arranged between the two side plates 61. Rotating blocks 72 are arranged on the rotating shaft 71, and the quick-change chucks are respectively arranged on the adjacent rotating blocks 72;

[0082] The rotation of the rotating shaft 71 can drive the synchronous rotation adjustment of the rotating block 72 and the quick-change chuck;

[0083] The side plate 61 and the mounting base are connected by bolts. The rotating block 72 and the quick-change chuck are connected by bolts. Through the connection of bolts, each structure can be replaced according to actual needs. For example, when the quick-change chuck cannot be used normally, a new quick-change joint can be replaced by removing the bolts between the rotating block 72 and the quick-change chuck. Another example is that when too much welding slag remains on the surface of the rotating block 72 close to the side plate 61 and it cannot be used normally, it can also be replaced by removing the bolts between the side plate 61 and the mounting base;

[0084] The positioning member 8 includes two fixing springs 81 respectively arranged on both sides of the rotating block 72. A locking block 82 is arranged at the end of the fixing spring 81. Two card slots 83 matching with the locking block 82 are respectively arranged on the side plate 61;

[0085] When the rotating block 72 rotates, the fixing spring 81 always presses the locking block 82. When it enters another card slot 83, it will automatically engage, so as to change the position of the rotating block 72 and lock and position it;

[0086] The adjusting member 9 includes a fixed gear 98 arranged on the rotating shaft 71. A first fixed rack 99 and a second fixed rack 910 are respectively arranged on both sides of the chuck placing plate 11. The first fixed rack 99 is used to switch the quick-change joint to be used, and the second fixed rack 910 is used to switch the used quick-change chuck. Both the first fixed rack 99 and the second fixed rack 910 are arc-shaped structures to ensure effective meshing with the fixed gear 98;

[0087] When the fixed gear 98 passes through the first fixed rack 99, the fixed gear 98 meshes with the first fixed rack 99. The fixed gear 98 and the rotating shaft 71 rotate, and the rotating block 72 and the quick-change joint rotate accordingly, turning the quick-change chuck to be used from the horizontal state to the vertical state and entering the welding use area;

[0088] When the fixed gear passes the second fixed rack 910, the fixed gear 98 meshes with the second fixed gear 98. The fixed gear 98 and the rotating shaft 71 rotate in opposite directions. The rotating block 72 and the quick-change joint rotate accordingly, turning the used quick-change chuck from the vertical state to the horizontal state and moving it into the storage area.

[0089] During use, it can be replaced according to the situation of the quick-change joint and the rotating block 72. Specifically, through the connection of bolts, each structure can be replaced according to actual needs:

[0090] When the quick-change chuck cannot be used properly, a new quick-change joint can be replaced by removing the bolt between the rotating block 72 and the quick-change chuck;

[0091] When there is too much welding slag remaining on the surface of the rotating block 72 close to the side plate 61 and it cannot be used properly, it can also be replaced by removing the bolt between the side plate 61 and the mounting seat;

[0092] When a quick-change joint needs to be replaced, the driving motor 41 rotates to drive the fixed shaft 42 to rotate. The fixed shaft 42 rotates to drive the polygonal block to rotate. When the polygonal block 31 rotates, under the elastic force of the return spring 55, the guiding roller 54 on the fixed seat 53 always fits the fixed guide rail 51, and the multi-stage telescopic tube 52 expands and contracts according to the shape of the fixed guide rail 51, further ensuring the stable displacement of the fixed seat 53;

[0093] When the fixed gear 98 passes the first fixed rack 99, the fixed gear 98 meshes with the first fixed rack 99. The fixed gear 98 and the rotating shaft 71 rotate. The rotating block 72 and the quick-change joint rotate accordingly, turning the quick-change chuck to be used from the horizontal state to the vertical state and moving it into the welding use area;

[0094] When the fixed gear passes the second fixed rack 910, the fixed gear 98 meshes with the second fixed gear 98. The fixed gear 98 and the rotating shaft 71 rotate in opposite directions. The rotating block 72 and the quick-change joint rotate accordingly, turning the used quick-change chuck from the vertical state to the horizontal state and moving it into the storage area.

[0095] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0096] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An automobile part welding fixture, comprising a plurality of basic fixtures (1) respectively arranged on a workbench and a mounting rack (2) arranged on the workbench, characterized in that: It further includes: a regulating cylinder (10), which is arranged on the mounting bracket (2); a chuck placing disc (11), which is arranged on the top of the regulating cylinder (10), and the quick-change chucks that are not in use in the chuck placing disc (11) are in a horizontal state; a switching unit (3), which is arranged on the chuck placing disc (11) and is used to drive the multiple quick-change chucks in the chuck placing disc (11) to rotate and switch, and make the quick-change chuck in use extend towards the exhaust pipe side; a deploying and retracting unit (6), which is arranged on the chuck placing disc (11) and is used to turn the quick-change chuck to be used from a horizontal state to a vertical state, and turn the used quick-change chuck from a vertical state to a horizontal state.

2. The automotive parts welding fixture according to claim 1, wherein: The switching unit (3) includes a polygonal block (31) arranged in the chuck placing disc (11), and a rotating member (4) is arranged on the chuck placing disc (11) to drive the polygonal block (31) to rotate. A contracting member (5) that cooperates with the rotating member (4) is arranged on the chuck placing disc (11) and is used to control the quick-change chuck in use in the chuck placing disc (11) to extend towards the exhaust pipe side when the polygonal block (31) rotates.

3. The automotive parts welding fixture according to claim 2, characterized in that: The rotating member (4) includes a driving motor (41) arranged on the chuck placing disc (11), a fixed shaft (42) is rotatably arranged on the chuck placing disc (11), the output end of the driving motor (41) is connected to the fixed shaft (42), and the polygonal block (31) is arranged on the fixed shaft (42).

4. The automotive parts welding fixture according to claim 3, characterized in that: The contracting member (5) includes a fixed guide rail (51) arranged on the chuck placing disc (11). A multi-stage telescopic tube (52) is arranged on each surface of the polygonal block (31). A fixed seat (53) is arranged at the end of each multi-stage telescopic tube (52). A guide roller (54) that cooperates with the fixed guide rail (51) is rotatably arranged on each fixed seat (53). A return spring (55) is arranged between each surface of the polygonal block (31) and the fixed seat (53), and the return spring (55) is located inside the multi-stage telescopic tube (52).

5. The automotive parts welding fixture according to claim 4, characterized in that: The deploying and retracting unit (6) includes two side plates (61) respectively arranged on both sides of the bottom of the mounting seat. A connecting member (7) is arranged between the two side plates (61) to connect the quick-change chuck. A positioning member (8) is arranged between the two side plates (61) and the rotating block (72) to realize the locking and positioning of the rotating block (72). An adjusting member (9) is arranged on the chuck placing disc (11) to adjust the state of the quick-change chuck.

6. The automotive parts welding fixture according to claim 5, wherein: The connecting member (7) includes a rotating shaft (71) rotatably arranged between the two side plates (61). Rotating blocks (72) are arranged on the rotating shaft (71), and the quick-change chucks are respectively arranged on the adjacent rotating blocks (72).

7. The automotive parts welding fixture according to claim 6, characterized in that: The side plate (61) is connected to the mounting seat by bolts, and the rotating block (72) is connected to the quick-change chuck by bolts.

8. The automotive parts welding fixture according to claim 6, characterized in that: The positioning member (8) includes two fixing springs (81) respectively arranged on both sides of the rotating block (72). A locking block (82) is arranged at the end of the fixing spring (81). Two clamping grooves (83) which are used in cooperation with the locking block (82) are formed on the side plates (61).

9. The automotive parts welding fixture according to claim 5, wherein: The adjusting member (9) includes an electric push rod (91) arranged on the chuck placing disc (11). A displacement seat (92) is arranged at the end of the electric push rod (91). A first switching motor (93) is arranged on the displacement seat (92). A rotating rod (94) is arranged at the output end of the first switching motor (93). A shifting rod (95) is arranged on the rotating rod (94). The shifting rod (95) is in contact with the rotating block (72) and is used for rotating the quick-change chuck to be used from a horizontal state to a vertical state. A second switching motor (96) is arranged on the chuck placing disc (11). A rotating rod (97) is arranged at the output end of the second switching motor (96). The rotating rod (97) is in contact with the rotation and is used for rotating the used quick-change chuck from a vertical state to a horizontal state.

10. The automotive parts welding fixture according to claim 5, characterized in that: The adjusting member (9) includes a fixed gear (98) arranged on the rotating shaft (71). A first fixed rack (99) and a second fixed rack (910) are respectively arranged on both sides of the chuck placing disc (11).

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