Workpiece limiting structure of spot welding machine

Abstract

The utility model discloses a spot welding machine workpiece limiting structure, which relates to the technical field of spot welding machines and comprises a base, a plurality of support columns fixedly connected to the bottom of the base, a fixing column fixedly connected to the top of the base, a welding mechanism arranged on the top of the base, and a first adjusting mechanism mounted on the top of the fixing column. The first adjusting mechanism comprises two moving blocks, second adjusting mechanisms are arranged at the tops of the two moving blocks, clamping mechanisms are installed in the second adjusting mechanisms, the second adjusting mechanisms comprise installation boxes, and the installation boxes are fixedly connected to the tops of the moving blocks. The device has the beneficial effects that a second lead screw is rotated through a rotary disc, a threaded plate is driven to move along a sliding groove, so that a connecting plate is driven to move, then a clamping mechanism is driven to move, the clamping width is adjusted, the device adapts to the size of a workpiece, and through respective adjustment of two second adjusting mechanisms, the clamping width of the two ends can be independently adjusted; therefore, the workpiece with the ends unequal in width can be clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of spot welding machines, in particular to a limiting structure for spot welding machine workpieces. Background Technique

[0002] The spot welding machine adopts the principle of double-sided and double-point overcurrent welding. During operation, two electrodes press on the workpiece, causing a certain contact resistance to form between the two layers of metal under the pressure of the two electrodes. When the welding current flows through the electrodes and then through the other electrode, instantaneous hot melting connection is formed at the two contact resistance points. Moreover, the welding current instantaneously forms a loop from the other electrode along the two workpieces and flows to this electrode, and it will not damage the internal structure of the workpiece to be welded.

[0003] After retrieval, the Chinese patent publication number is CN220560651U, which discloses a limiting structure for spot welding machine workpieces. By the rotational force of rotating the rotating block and the cooperation of components such as the fixing plate, threaded rod, and suction cup inside the clamping device, the effect of clamping and stabilizing the workpiece to be spot welded by rotating the threaded rod is achieved, and the wear degree of the workpiece to be spot welded is reduced, the range of workpieces that can be clamped is enhanced, resource consumption is reduced, and work efficiency is improved.

[0004] However, during the use of the above patent, the positions of the two fixing plates are fixed. Therefore, when welding larger workpieces, the clamping device cannot be clamped at the center of the workpiece, and the clamping stability of the workpiece will decrease, and there will be a shaking situation during the welding process, resulting in a decrease in welding quality. Content of the Utility Model

[0005] The purpose of the utility model is to provide a limiting structure for spot welding machine workpieces to solve the above problems.

[0006] The utility model realizes the above purpose through the following technical solutions:

[0007] A limiting structure for spot welding machine workpieces includes a base. A plurality of support columns are fixedly connected to the bottom of the base, a fixed column is fixedly connected to the top of the base, a welding mechanism is arranged on the top of the base, a first adjustment mechanism is installed on the top of the fixed column, the first adjustment mechanism includes two moving blocks, a second adjustment mechanism is arranged on the top of each of the two moving blocks, a clamping mechanism is installed in the second adjustment mechanism, the second adjustment mechanism includes an installation box, the installation box is fixedly connected to the top of the moving block, a second lead screw is rotatably connected in the installation box, a threaded plate is threadedly connected to the second lead screw, sliding grooves are opened on the upper and lower sides of the installation box, the threaded plate is slidably connected in the sliding grooves, and connecting plates are fixedly connected to the upper and lower sides of the threaded plate.

[0008] Preferably, the installation box is a cuboid box made of aluminum alloy.

[0009] Preferably, a rubber pad for increasing friction is fixedly connected to the bottom of the support column.

[0010] Preferably, the first adjusting mechanism includes a mounting plate fixedly connected to the top of the fixed column. A bidirectional lead screw is mounted on the top of the mounting plate through a bearing block. The moving block is threadedly connected to the bidirectional lead screw. A rectangular groove is formed in the top of the mounting plate, and the moving block is slidably connected in the rectangular groove.

[0011] Preferably, the clamping mechanism includes a threaded block fixedly connected to the connecting plate above the threaded plate. A threaded rod is threadedly connected in the threaded block. The bottom of the threaded rod is fixedly connected to a moving suction cup. A fixed suction cup is fixedly connected to the connecting plate at the bottom of the threaded plate.

[0012] Preferably, the welding mechanism includes a fixed seat fixedly connected to the top of the base. A first robotic arm is fixedly connected to the top of the fixed seat. A first electrode is mounted on the first robotic arm. An installation frame is fixedly connected to the top of the base. A second robotic arm is fixedly connected to the top of the installation frame. A second electrode is mounted on the second robotic arm.

[0013] The beneficial effects are as follows: By rotating the turntable to rotate the second lead screw, driving the threaded plate to move along the sliding groove, thereby driving the connecting plate to move, and further driving the clamping mechanism to move, so as to adjust the clamping width and adapt to the size of the workpiece. And through the respective adjustments of the two groups of second adjusting mechanisms, independent adjustment of the clamping widths at both ends can be achieved, so as to clamp workpieces with unequal widths at the clamping ends.

[0014] The additional technical features and their advantages of the present invention will be more clearly described in the following description content, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0016] Figure 1 is a three-dimensional view of a workpiece limiting structure of a spot welder according to the present invention;

[0017] Figure 2 is a front view of a workpiece limiting structure of a spot welder according to the present invention;

[0018] Figure 3 is a three-dimensional view of the first adjusting mechanism of a workpiece limiting structure of a spot welder according to the present invention;

[0019] Figure 4 is a three-dimensional view of the second adjusting mechanism and the clamping mechanism of a workpiece limiting structure of a spot welder according to the present invention.

[0020] The description of the reference numerals is as follows: 1. Base; 101. Support column; 102. Fixed column; 201. Mounting plate; 202. Bi-directional lead screw; 203. Moving block; 204. Rectangular groove; 301. Mounting box; 302. Second lead screw; 303. Threaded plate; 304. Connecting plate; 305. Sliding groove; 401. Threaded block; 402. Threaded rod; 403. Moving suction cup; 404. Fixed suction cup; 501. Fixed seat; 502. First robotic arm; 503. First electrode; 504. Mounting bracket; 505. Second robotic arm; 506. Second electrode. Detailed implementation manners

[0021] 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.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0023] The present utility model will be further described below in conjunction with the accompanying drawings:

[0024] As Figures 1 - 4 shown, a limiting structure for a spot welding machine workpiece includes a base 1. A plurality of support columns 101 are welded to the bottom of the base 1. The bottom of the support column 101 is connected by screws with a rubber pad for increasing friction. A fixed column 102 is welded to the top of the base 1. A welding mechanism is arranged on the top of the base 1. A first adjustment mechanism is installed on the top of the fixed column 102. The first adjustment mechanism includes two moving blocks 203. Second adjustment mechanisms are arranged on the tops of the two moving blocks 203. A clamping mechanism is installed in the second adjustment mechanism.

[0025] The first adjustment mechanism includes a mounting plate 201. The mounting plate 201 is connected to the top of the fixed column 102 by bolts. A bidirectional lead screw 202 is mounted on the top of the mounting plate 201 through a bearing seat. A moving block 203 is threadedly connected to the bidirectional lead screw 202. A rectangular groove 204 is formed in the top of the mounting plate 201, and the moving block 203 is slidably connected in the rectangular groove 204. By rotating the turntable to rotate the bidirectional lead screw 202, the two moving blocks 203 are driven to move, thereby driving the two groups of second adjustment mechanisms to move, realizing the adjustment of the clamping length. The second adjustment mechanism includes a mounting box 301. The mounting box 301 is connected to the top of the moving block 203 by screws. The mounting box 301 is a cuboid box made of aluminum alloy. A second lead screw 302 is rotatably connected in the mounting box 301 through a bearing. A threaded plate 303 is threadedly connected to the second lead screw 302. Sliding grooves 305 are formed in the upper and lower sides of the mounting box 301, and the threaded plate 303 is slidably connected in the sliding grooves 305. Connecting plates 304 are connected to the upper and lower sides of the threaded plate 303 by bolts. By rotating the turntable to rotate the second lead screw 302, the threaded plate 303 is driven to move along the sliding grooves 305, thereby driving the connecting plates 304 to move, and then driving the clamping mechanism to move, realizing the adjustment of the clamping width to adapt to the size of the workpiece. And through the respective adjustments of the two groups of second adjustment mechanisms, the clamping widths at both ends can be independently adjusted, so as to clamp workpieces with unequal widths at the clamping ends.

[0026] The clamping mechanism includes a threaded block 401. The threaded block 401 is welded in the connecting plate 304 located above the threaded plate 303. A threaded rod 402 is threadedly connected in the threaded block 401. A moving suction cup 403 is connected to the bottom of the threaded rod 402 by bolts. A fixed suction cup 404 is connected to the connecting plate 304 located at the bottom of the threaded plate 303 by bolts. Place the workpiece to be welded on the top of the fixed suction cup 404. By rotating the turntable, the threaded rod 402 is driven to rotate and move downward, thereby driving the moving suction cup 403 to move downward, and then reducing the distance between the moving suction cup 403 and the fixed suction cup 404, realizing the clamping and limiting of the workpiece.

[0027] The welding mechanism includes a fixed seat 501. The fixed seat 501 is connected to the top of the base 1 by bolts. A first robotic arm 502 is connected to the top of the fixed seat 501 by bolts. A first electrode 503 is mounted on the first robotic arm 502. A mounting frame 504 is welded to the top of the base 1. A second robotic arm 505 is connected to the top of the mounting frame 504 by bolts. A second electrode 506 is mounted on the second robotic arm 505. By the movement of the first robotic arm 502 and the second robotic arm 505, the first electrode 503 and the second electrode 506 are driven to move, realizing the welding of the workpiece.

[0028] Working principle: During use, the two-way lead screw 202 is rotated by the turntable, thereby driving the movement of two moving blocks 203, and then driving the movement of two groups of second adjustment mechanisms to achieve adjustment of the clamping length. Then, the second lead screw 302 is rotated by the turntable to drive the threaded plate 303 to move along the sliding groove 305, thereby driving the movement of the connecting plate 304, and then driving the movement of the clamping mechanism to achieve adjustment of the clamping width to adapt to the size of the workpiece. Moreover, through the respective adjustments of the two groups of second adjustment mechanisms, independent adjustment of the clamping widths at both ends can be achieved, so as to clamp workpieces with unequal widths at the clamping ends. Then, the workpiece to be welded is placed on the top of the fixed suction cup 404. By rotating the turntable, the threaded rod 402 is driven to rotate and move downward, thereby driving the moving suction cup 403 to move downward, and then reducing the distance between the moving suction cup 403 and the fixed suction cup 404 to achieve clamping and limiting of the workpiece. Then, through the movement of the first robotic arm 502 and the second robotic arm 505, the first electrode 503 and the second electrode 506 are driven to move to achieve welding of the workpiece.

[0029] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A limit structure for a spot welding machine workpiece, including a base (1), multiple support columns (101) are fixedly connected to the bottom of the base (1), a fixed column (102) is fixedly connected to the top of the base (1), and a welding mechanism is arranged on the top of the base (1), characterized in that: A first adjusting mechanism is installed on the top of the fixed column (102). The first adjusting mechanism includes two moving blocks (203). Second adjusting mechanisms are arranged on the tops of the two moving blocks (203), and a clamping mechanism is installed in the second adjusting mechanism. The second adjusting mechanism includes an installation box (301). The installation box (301) is fixedly connected to the top of the moving block (203). A second lead screw (302) is rotatably connected in the installation box (301). A threaded plate (303) is threadedly connected to the second lead screw (302). Sliding grooves (305) are formed in the upper and lower sides of the installation box (301). The threaded plate (303) is slidably connected in the sliding grooves (305). Connecting plates (304) are fixedly connected to the upper and lower sides of the threaded plate (303).

2. The limiting structure for the workpiece processed by a spot welder according to claim 1, wherein: The installation box (301) is a rectangular box made of aluminum alloy.

3. The limit structure for the workpiece processed by the spot welder according to claim 1, wherein: A rubber pad for increasing friction is fixedly connected to the bottom of the support column (101).

4. The limit structure for the workpiece processed by the spot welder according to claim 1, characterized in that: The first adjusting mechanism includes an installation plate (201). The installation plate (201) is fixedly connected to the top of the fixed column (102). A bidirectional lead screw (202) is installed on the top of the installation plate (201) through a bearing seat. The moving block (203) is threadedly connected to the bidirectional lead screw (202). A rectangular groove (204) is formed in the top of the installation plate (201). The moving block (203) is slidably connected in the rectangular groove (204).

5. The limiting structure for the workpiece processed by a spot welder according to claim 1, characterized in that: The clamping mechanism includes a threaded block (401). The threaded block (401) is fixedly connected to the connecting plate (304) located above the threaded plate (303). A threaded rod (402) is threadedly connected in the threaded block (401). A moving suction cup (403) is fixedly connected to the bottom of the threaded rod (402). A fixed suction cup (404) is fixedly connected to the connecting plate (304) located at the bottom of the threaded plate (303).

6. The limit structure for the workpiece processed by the spot welder according to claim 1, characterized in that: The welding mechanism includes a fixed seat (501). The fixed seat (501) is fixedly connected to the top of the base (1). A first robotic arm (502) is fixedly connected to the top of the fixed seat (501). A first electrode (503) is installed on the first robotic arm (502). An installation frame (504) is fixedly connected to the top of the base (1). A second robotic arm (505) is fixedly connected to the top of the installation frame (504). A second electrode (506) is installed on the second robotic arm (505).

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