Spot welding mechanism for inner side of special-shaped product

Abstract

The utility model discloses a special-shaped product inner side spot welding mechanism which comprises a mechanism table, a spot welding table is fixedly installed at the bottom of the mechanism table, an upper electrode and a lower electrode which correspond to each other and are telescopic are installed on one side of the spot welding table and the top of the mechanism table, and a vertical plate is movably installed on the top of the mechanism table. When spot welding machining is carried out, a welding connecting piece is placed on the top of the positioning block and is positioned in the horizontal direction through the arc plate, then a special-shaped workpiece is arranged on the installed positioning block in a sleeved mode to press the top face of the welding connecting piece, then the positioning block is connected to the outer portion of the rotating cylinder in a sleeved mode, and the vertical plate is moved to drive the special-shaped workpiece to the machining position. And after welding of one spot is completed, the upper electrode and the lower electrode are reset, the motor is started to drive the rotating cylinder to rotate, and then the welding connecting piece, the positioning block and the special-shaped workpiece rotate to the next welding spot together, so that the use cost of equipment and the risk of poor appearance in the product clamping and turnover process are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spot welding processing of special-shaped products, in particular to an inner side spot welding mechanism for special-shaped products. Background Art

[0002] Special-shaped products refer to those parts or components with irregular shapes and difficult to be manufactured through standardized production processes. Such products usually have unique geometric shapes and complex structures. Therefore, special processes and technologies are required during the manufacturing process. Special-shaped products are widely used in many fields such as aerospace, automobile manufacturing, and electronic equipment. Their manufacturing quality has an important impact on the overall performance and reliability of the products.

[0003] At present, for some special-shaped products used as outer casings, such as products installed on the outside of special-shaped tees to improve their strength, sleeve-shaped workpieces are spot welded at their openings. There are bolt connection pieces on the workpieces, and the special-shaped products can be connected to the special-shaped tees through bolts. These workpieces are often spot welded on the inner walls of the special-shaped products. Generally, there are six weld points in total. After welding, the position accuracy requirements are high. The workpieces have no good limit at the welding positions, and manual adjustment of the processing positions and replacement of the welding points are required. There are problems such as many welding processes, low production efficiency, long equipment occupation time, high labor costs, and damage to the appearance surface of the products during product turnover.

[0004] Therefore, the applicant proposes an inner side spot welding mechanism for special-shaped products to solve the problems. Summary of the Utility Model

[0005] The utility model provides an inner side spot welding mechanism for special-shaped products, which solves the problems of many processes, inaccurate product positioning, and out-of-tolerance welding product dimensions when welding special-shaped products as mentioned in the above background.

[0006] To solve the above technical problems, the inner side spot welding mechanism for special-shaped products provided by the utility model includes a mechanism table. A spot welding table is fixedly installed on the top of the mechanism table. A corresponding and telescopic upper electrode and a lower electrode are installed on one side of the spot welding table and on the top of the mechanism table. A vertical plate is movably installed on the top of the mechanism table. A motor is installed on one side of the vertical plate. The shaft of the motor is docked with a rotating cylinder. A positioning block can be sleeved outside the rotating cylinder. An annular welding connecting piece is placed on the top of the positioning block. The inner wall of the welding connecting piece is attached to the outer walls of a row of arc plates evenly distributed on the top of the positioning block. An adapted special-shaped workpiece is sleeved outside the positioning block. The inner top end of the special-shaped workpiece presses on the top surface of the welding connecting piece. The upper electrode can be located inside the positioning block through the movement of the vertical plate. The upper electrode can contact the joint part of the special-shaped workpiece and the welding connecting piece by descending, and at this time, the upper electrode is at the notch between each arc plate.

[0007] Preferably, six convex strips are evenly distributed on the outer wall of the rotating cylinder, and when the positioning block is sleeved on the outside of the rotating cylinder, the convex strips are inserted from the sockets on the inner side of the positioning block, and the convex strips are shorter than the rotating cylinder.

[0008] Preferably, a ring plate is fixed to the side wall of the spot welding station, and six ball grooves are evenly designed on one side of the ring plate. Balls are installed in the grooves, and the balls are in contact with the side wall of the special-shaped workpiece.

[0009] Preferably, a screw rod is rotatably connected in the inner cavity of the mechanism platform, a moving block is threadedly connected to the outer surface of the screw rod, and the screw rod is docked with a handle installed on the outer wall of the mechanism platform, the moving block slides in the inner cavity of the mechanism platform, and the top of the moving block is docked with the bottom of the vertical plate.

[0010] Preferably, the bolt connection piece on the inner wall of the welding connector is located in the gap between each arc plate, and the bolt connection piece is located on one side of the upper electrode during welding, and the two are not in contact.

[0011] Compared with the related art, the spot welding mechanism for the inner side of the special-shaped product provided by the utility model has the following advantages:

[0012] Beneficial effects:

[0013] When the utility model performs spot welding, the welding connector is placed on the top of the positioning block, and is positioned in the horizontal direction by the arc plate. Then, the special-shaped workpiece is sleeved on the installed positioning block to press the top surface of the welding connector. Then, the positioning block is sleeved on the outside of the rotating cylinder, and the vertical plate is moved to drive the special-shaped workpiece to the processing position. When one spot welding is completed, the upper and lower electrodes are reset, and the motor is started to drive the rotating cylinder to rotate. Then, the welding connector, the positioning block and the special-shaped workpiece can be rotated to the next welding point together. This reduces the cost of equipment use and the risk of poor appearance during product clamping and turnover, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall three-dimensional structure of the utility model is shown in FIG. Figure I ;

[0015] Figure 2 The overall three-dimensional structure of the utility model is shown in FIG. Figure II ;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the mechanism platform of the utility model;

[0017] Figure 4 It is a schematic diagram of the positioning block, welding connector and special-shaped workpiece connection structure of the utility model;

[0018] Figure 5 It is a schematic diagram of the positioning block, welding connector and special-shaped workpiece splitting structure of the utility model;

[0019] Figure 6 A three-dimensional structural schematic diagram of the upper electrode of the present utility model in a processing state;

[0020] Figure 7 A sectional three-dimensional installation structural schematic diagram of the special-shaped workpiece of the present utility model.

[0021] Reference numerals in the figure: 1, mechanism table; 2, vertical plate; 3, spot welding table; 4, motor; 5, rotating cylinder; 6, positioning block; 7, welding connecting piece; 8, arc plate; 9, bolt connecting piece; 10, special-shaped workpiece; 11, lower electrode; 12, upper electrode; 13, ring plate; 14, ball; 15, lead screw; 16, moving block; 17, handle; 18, rib. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0023] Provided by Figures 1-7 The present utility model provides an inner side spot welding mechanism for special-shaped products, including a mechanism table 1. A spot welding table 3 is fixedly installed on the top of the mechanism table 1. A corresponding and telescopic upper electrode 12 and a lower electrode 11 are installed on one side of the spot welding table 3 and the top of the mechanism table 1, which can be realized by an electric push rod and is a prior art means. A vertical plate 2 is movably installed on the top of the mechanism table 1. A motor 4 is installed on one side of the vertical plate 2. The shaft of the motor 4 is butted with a rotating cylinder 5. A positioning block 6 can be sleeved outside the rotating cylinder 5. A ring-shaped welding connecting piece 7 is placed on the top of the positioning block 6. The inner wall of the welding connecting piece 7 fits with the outer walls of a row of arc plates 8 evenly distributed on the top of the positioning block 6. And a special-shaped workpiece 10 adapted to the outside of the positioning block 6 is sleeved. The top end inside the special-shaped workpiece 10 presses the top surface of the welding connecting piece 7. The upper electrode 12 can be located inside the positioning block 6 through the movement of the vertical plate 2. The upper electrode 12 can contact the fitting part of the special-shaped workpiece 10 and the welding connecting piece 7 by descending, and at this time, the upper electrode 12 is located in the notch between each arc plate 8.

[0024] With the above structural design, during spot welding, the welding connecting piece 7 is placed on the top of the positioning block 6. The outer wall of the welding connecting piece 7 is aligned with the outer wall of the positioning block 6, and the inner wall contacts the arc plate 8 for horizontal positioning. Then, the special-shaped workpiece 10 is sleeved on the installed positioning block 6, fitted and pressed against the top surface of the welding connecting piece 7. At this time, the welding connecting piece 7 cannot be separated from the special-shaped workpiece 10 and always remains in the welding position. Then, the positioning block 6 is sleeved outside the rotating cylinder 5, and the vertical plate 2 is moved so that the upper electrode 12 moves inside the positioning block 6, and the lower electrode 11 is located below the special-shaped workpiece 10. The upper electrode 12 is lowered to contact the fitting part of the special-shaped workpiece 10 and the welding connecting piece 7, and the lower electrode 11 contacts the bottom surface of the special-shaped workpiece 10, then spot welding can be carried out. And the six spot welding positions are located at the notches between the six arc plates 8. After one spot welding is completed, the upper and lower electrodes are reset, and the motor 4 is started to drive the rotating cylinder 5 to rotate. It is set that after the positioning block 6 is sleeved outside the upper rotating cylinder 5, the two rotate synchronously. Then, the welding connecting piece 7, the positioning block 6 and the special-shaped workpiece 10 rotate together to the next welding point. In this way, the equipment usage cost and the risk of poor appearance caused during the product clamping and turnover process are reduced, and the production efficiency is improved.

[0025] Six convex strips 18 are evenly distributed on the outer wall of the rotating cylinder 5. When the positioning block 6 is sleeved outside the rotating cylinder 5, the convex strips 18 are inserted into the sockets inside the positioning block 6. The convex strips 18 are shorter than the rotating cylinder 5. A ring plate 13 is fixed on the side wall of the spot welding table 3. Six ball grooves are evenly designed on one side of the ring plate 13, and balls 14 are installed in the grooves, and the balls 14 all contact the side wall of the special-shaped workpiece 10.

[0026] By designing the convex strips 18, the ring plate 13 and the balls 14, after the positioning block 6 is sleeved outside the rotating cylinder 5 and the side of the positioning block 6 is aligned with the side of the rotating cylinder 5, the convex strips 18 are inserted into the innermost ends of the sockets inside the positioning block 6. The rotating cylinder 5 and the positioning block 6 can rotate together, and at this time, the positioning block 6 cannot move further in the sleeving direction. When moving to the processing position, the balls 14 contact the special-shaped workpiece 10 of the ring plate 13. Then, at this time, the positioning block 6 cannot move in the opposite direction of the sleeving direction. Then, during processing, the positioning block 6 and the special-shaped workpiece 10 will not separate and always remain in a stable position, further improving the stability of processing. It should be noted that when changing the spot welding point, the vertical plate 2 does not need to move, and the balls 14 can roll, which does not affect the rotation of the special-shaped workpiece 10.

[0027] A lead screw 15 is rotatably connected in the inner cavity of the mechanism table 1. A moving block 16 is threadedly connected to the outside of the lead screw 15, and a handle 17 installed on the outer wall of the mechanism table 1 is connected to the lead screw 15. The moving block 16 slides in the inner cavity of the mechanism table 1, and the top of the moving block 16 abuts against the bottom of the vertical plate 2.

[0028] With the above structural design, when controlling the movement of the vertical plate 2, rotate the handle 17 to make the lead screw 15 rotate, so that the moving block 16 slides in the inner cavity, and its docking block with the vertical plate 2 will also slide in the corresponding opening, making the vertical plate 2 move to the processing position, which is very convenient and practical.

[0029] The bolt connecting piece 9 on the inner wall of the welding connecting piece 7 is located in the gap between each arc plate 8, and the bolt connecting piece 9 is on the side of the upper electrode 12 during welding and they do not come into contact with each other.

[0030] This design makes the bolt connecting piece 9 located in the gap, making the structure splicing more reasonable.

[0031] Working principle: When performing spot welding processing, place the welding connecting piece 7 on the top of the positioning block 6, and position it horizontally by the arc plate 8. Then, put the special-shaped workpiece 10 on the installed positioning block 6 and press the top surface of the welding connecting piece 7. Then, sleeved the positioning block 6 outside the rotating cylinder 5, rotate the handle 17 to make the lead screw 15 rotate, so that the moving block 16 slides in the inner cavity, and its docking block with the vertical plate 2 will also slide in the corresponding opening, making the vertical plate 2 move to the processing position. Lower the upper electrode 12 to contact the joint part of the special-shaped workpiece 10 and the welding connecting piece 7, and the lower electrode 11 contacts the bottom surface of the special-shaped workpiece 10, then spot welding processing can be carried out. And the six spot welding positions are located in the gaps between the six arc plates 8. Then, after one spot welding is completed, the upper and lower electrodes are reset, and the motor 4 is started to drive the rotating cylinder 5 to rotate. It is set that the positioning block 6 and the rotating cylinder 5 rotate synchronously after the positioning block 6 is sleeved outside the rotating cylinder 5. Then, the welding connecting piece 7, the positioning block 6 and the special-shaped workpiece 10 rotate together to the next welding point.

[0032] 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 including 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.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spot welding mechanism for the inside of a special-shaped product, comprising a mechanism platform (1), a spot welding platform (3) fixedly mounted on the top of the mechanism platform (1), a corresponding and retractable upper electrode (12) and a lower electrode (11) mounted on one side of the spot welding platform (3) and on the top of the mechanism platform (1), characterized in that: A vertical plate (2) is movably mounted on the top of the mechanism table (1), a motor (4) is mounted on one side of the vertical plate (2), a rotating cylinder (5) is butted against the shaft of the motor (4), a positioning block (6) can be sleeved on the outside of the rotating cylinder (5), an annular welding connector (7) is placed on the top of the positioning block (6), the inner wall of the welding connector (7) is fitted with the outer wall of a row of arc plates (8) evenly distributed on the top of the positioning block (6), and a matching special-shaped workpiece (10) is sleeved on the outside of the positioning block (6), and the top of the inside of the special-shaped workpiece (10) presses the top surface of the welding connector (7); The upper electrode (12) can be located inside the positioning block (6) by moving the vertical plate (2), and the upper electrode (12) can be brought into contact with the fitting parts of the special-shaped workpiece (10) and the welding connector (7) by descending, and at this time, the upper electrode (12) is located in the gap between each arc plate (8).

2. The spot welding mechanism for the inner side of a special-shaped product according to claim 1, characterized in that: Six convex strips (18) are evenly distributed on the outer wall of the rotating cylinder (5); when the positioning block (6) is sleeved on the outside of the rotating cylinder (5), the convex strips (18) are inserted from the socket inside the positioning block (6); and the convex strips (18) are shorter than the rotating cylinder (5).

3. The spot welding mechanism for the inner side of a special-shaped product according to claim 1, characterized in that: A ring plate (13) is fixed to the side wall of the spot welding table (3), six ball grooves are evenly designed on one side of the ring plate (13), balls (14) are installed in the grooves, and the balls (14) are in contact with the side wall of the special-shaped workpiece (10).

4. The spot welding mechanism for the inner side of a special-shaped product according to claim 3, characterized in that: A screw rod (15) is rotatably connected in the inner cavity of the mechanism platform (1), and a moving block (16) is externally threadedly connected to the screw rod (15), and the screw rod (15) is connected to a handle (17) installed on the outer wall of the mechanism platform (1). The moving block (16) slides in the inner cavity of the mechanism platform (1), and the top of the moving block (16) is connected to the bottom of the vertical plate (2).

5. The spot welding mechanism for the inner side of a special-shaped product according to claim 1, characterized in that: The bolt connection piece (9) on the inner wall of the welding connection piece (7) is located in the gap between each arc plate (8), and the bolt connection piece (9) is located on one side of the upper electrode (12) during welding, and the two are not in contact.

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