Leakage-proof structure of automobile part spot welding clamp

Abstract

The utility model discloses a leakage-proof structure of an automobile part spot welding clamp, which belongs to the field of leakage-proof structures and comprises an inverted concave frame, and a group of leakage-proof clamping mechanisms in bilateral symmetry are arranged on the top surface of the concave frame. And the leakage-proof clamping mechanism comprises electric push rods, a connecting plate, a concave plate, a bidirectional threaded rod, concave clamping seats, a photoelectric sensor emitter, a photoelectric sensor receiver and a leakage-proof indicator lamp, the electric push rods are fixedly connected to the two side walls of the concave frame correspondingly, and the leakage-proof clamping mechanism is arranged. Due to the fact that an infrared light path generated between the photoelectric sensor emitter and the photoelectric sensor receiver is blocked by automobile parts, the photoelectric sensor can send a signal to the controller, and the controller turns on the leakage-proof indicator light to enable the leakage-proof indicator light to be in a normally-on state when receiving the signal. Therefore, the purpose of avoiding neglected loading of the parts by workers is achieved.

Description

Technical Field

[0001] The utility model relates to the field of leak-proof structures, in particular to a leak-proof structure of a spot welding fixture for automobile parts. Background Technique

[0002] Spot welding refers to a welding method in which columnar electrodes are used to form solder joints between the contact surfaces of two overlapping workpieces during welding. During spot welding, the workpieces are first pressed together tightly, and then the current is switched on. Under the action of the resistance heat, the contact part of the workpieces melts and forms a solder joint after cooling. Spot welding is mainly used for welding thin plate components and stamped parts with a thickness of less than 4 mm, and is particularly suitable for welding automobile bodies and carriages, and aircraft fuselages.

[0003] In the prior art, spot welding fixtures are often required in the production and processing of automobile parts. By fixing the automobile parts with the spot welding fixtures, it is convenient for the electric welding machine to perform electric welding operations. However, the structures of the existing spot welding fixtures are relatively simple and can only play a role in clamping and fixing the automobile parts. Since there are many parts in the automobile production workshop and the work is relatively busy, problems such as missing installation will occur when clamping and fixing the automobile parts with the spot welding fixtures. At the same time, the spot welding fixtures can only clamp and fix parts of the same size and cannot clamp and fix parts of different thicknesses. Therefore, when processing parts of different thicknesses, the spot welding fixtures need to be disassembled and replaced frequently, which not only has poor applicability but also reduces the work efficiency. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a leak-proof structure of a spot welding fixture for automobile parts, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A leak-proof structure of a spot welding fixture for automotive parts, including an inverted concave frame. A set of left-right symmetric leak-proof clamping mechanisms are provided on the top surface of the concave frame. The leak-proof clamping mechanism includes an electric push rod, a connecting plate, a concave plate, a bidirectional threaded rod, a concave clamping seat, a photoelectric sensor transmitter, a photoelectric sensor receiver, and a leak-proof indicator light. Electric push rods are respectively fixedly connected to the two side walls of the concave frame, and a connecting plate is fixedly connected to the output end of the electric push rod. The connecting plate is movably connected to the concave frame through a sliding plate on the top surface, and the concave plate is fixedly connected to the top surface of the sliding plate. The bidirectional threaded rod is movably connected to the notch of the concave plate through rotating rods at both ends, and two concave clamping seats are respectively movably connected to the concave plate through sliding blocks on the outer side walls. The sliding block is also movably connected to the bidirectional threaded rod through a connecting block on the outer side wall. A photoelectric sensor transmitter is fixedly connected to the top surface of the upper concave clamping seat, and a leak-proof indicator light is also fixedly connected to the front end wall of the upper concave clamping seat. A photoelectric sensor receiver corresponding to the photoelectric sensor transmitter is fixedly connected to the bottom surface of the lower concave clamping seat.

[0007] Preferably, a controller is fixedly installed at the bottom of the inner left side wall of the concave frame, and the controller is electrically connected to the electric push rod, the photoelectric sensor transmitter, the photoelectric sensor receiver, and the leak-proof indicator light through connecting wires.

[0008] Preferably, a horizontal sliding opening is formed on the top surface of the concave frame, and electric push rods are respectively fixedly installed on the left and right side walls of the concave frame. A connecting plate is fixedly installed on the output end of the electric push rod, and a sliding plate is fixedly installed on the top surface of the connecting plate. The sliding plate is movably installed in the horizontal sliding opening, and a concave plate is fixedly installed on the top surface of the sliding plate.

[0009] Preferably, a vertical sliding opening is formed on the inner side wall of the concave plate, and rotating holes are respectively formed on the top and bottom surfaces of the concave plate. Rotating rods are respectively fixedly installed at the upper and lower ends of the bidirectional threaded rod, and the rotating rods are movably installed in the rotating holes. A knob is also fixedly installed at the top end of the upper rotating rod.

[0010] Preferably, the two concave clamping seats are in an upper-lower symmetric state, and sliding blocks are fixedly installed on the outer side walls of the concave clamping seats. The sliding blocks are movably installed in the vertical sliding openings, and connecting blocks are fixedly installed on the outer side walls of the sliding blocks. A threaded hole is formed on the top surface of the connecting block and is threadedly connected to the bidirectional threaded rod through the threaded hole.

[0011] Preferably, through holes are respectively formed on the opposite walls of the upper and lower concave clamping seats. A photoelectric sensor transmitter is fixedly installed on the top surface of the upper concave clamping seat, and a photoelectric sensor receiver is also fixedly installed on the front end wall of the concave clamping seat. A photoelectric sensor receiver corresponding to the photoelectric sensor transmitter is fixedly installed on the bottom surface of the lower concave clamping seat.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, the leak-proof clamping mechanism is arranged. When placing an automotive part between the upper and lower symmetric concave clamping seats, since the automotive part blocks the infrared light path generated between the photoelectric sensor transmitter and the photoelectric sensor receiver, the photoelectric sensor will send a signal to the controller. After receiving the signal, the controller will turn on the leak-proof indicator light to make the leak-proof indicator light always on, so as to avoid the staff from missing the installation of parts. At the same time, rotate the knob to drive the bidirectional threaded rod to rotate through the rotating rod, so that the upper and lower symmetric connecting blocks respectively make relative movement operations along the bidirectional threaded rod through the threaded holes on the top surface. The connecting blocks will drive the concave clamping seats to move synchronously through the sliding blocks until the automotive part is clamped and limited and fixed between the symmetric concave clamping seats according to its thickness. Then, the controller is used to turn on the electric push rod to drive the output end to push the connecting plate to move inward. The connecting plate will drive the concave plate to move on the top surface of the concave frame through the sliding plate, so that the two automotive parts make relative movement operations until the two automotive parts are tightly butted together, thereby achieving the purpose of facilitating the rapid clamping, fixing and spot welding of automotive parts with different thicknesses, not only improving the applicability of the device, but also improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the structural disassembly of the leak-proof clamping mechanism of the utility model.

[0016] Figure 3 It is a schematic diagram of the structural disassembly of the concave plate of the utility model.

[0017] In the figure: 1, concave frame; 2, leak-proof clamping mechanism; 3, controller; 4, horizontal sliding port; 5, electric push rod; 6, connecting plate; 7, sliding plate; 8, concave plate; 9, vertical sliding port; 10, rotating hole; 11, bidirectional threaded rod; 12, rotating rod; 13, knob; 14, concave clamping seat; 15, sliding block; 16, connecting block; 17, threaded hole; 18, shooting hole; 19, photoelectric sensor transmitter; 20, photoelectric sensor receiver; 21, leak-proof indicator light. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the technical means, creative features, achieved purposes and effects of the utility model easy to understand, the utility model will be further described below in conjunction with the specific embodiments.

[0019] Such as Figure 1 - Figure 3As shown in the figure, a leak-proof structure of a spot welding fixture for automotive parts includes an inverted concave frame 1. A set of left-right symmetric leak-proof clamping mechanisms 2 are provided on the top surface of the concave frame 1. The leak-proof clamping mechanism 2 includes an electric push rod 5, a connecting plate 6, a concave plate 8, a bidirectional threaded rod 11, a concave clamping seat 14, a photoelectric sensor transmitter 19, a photoelectric sensor receiver 20, and a leak-proof indicator light 21. Electric push rods 5 are respectively fixedly connected to the two side walls of the concave frame 1, and a connecting plate 6 is fixedly connected to the output end of the electric push rod 5. The connecting plate 6 is movably connected to the concave frame 1 through a sliding plate 7 on the top surface, and the concave plate 8 is fixedly connected to the top surface of the sliding plate 7. The bidirectional threaded rod 11 is movably connected to the notch of the concave plate 8 through rotating rods 12 at both ends, and two concave clamping seats 14 are respectively movably connected to the concave plate 8 through sliding blocks 15 on the outer side walls. The sliding blocks 15 are also movably connected to the bidirectional threaded rod 11 through connecting blocks 16 on the outer side walls. A photoelectric sensor transmitter 19 is fixedly connected to the top surface of the upper concave clamping seat 14, and a leak-proof indicator light 21 is also fixedly connected to the front end wall of the upper concave clamping seat 14. A photoelectric sensor receiver 20 corresponding to the photoelectric sensor transmitter 19 is fixedly connected to the bottom surface of the lower concave clamping seat 14.

[0020] As Figure 2 shown, a controller 3 is fixedly installed at the bottom of the left inner side wall of the concave frame 1, and the controller 3 is electrically connected to the electric push rod 5, the photoelectric sensor transmitter 19, the photoelectric sensor receiver 20, and the leak-proof indicator light 21 through connecting wires, and the controller 3 is used to electrically control the electric push rod 5, the photoelectric sensor transmitter 19, the photoelectric sensor receiver 20, and the leak-proof indicator light 21;

[0021] As Figure 2 shown, a horizontal sliding opening 4 is formed on the top surface of the concave frame 1, and electric push rods 5 are respectively fixedly installed on the left and right side walls of the concave frame 1. A connecting plate 6 is fixedly installed on the output end of the electric push rod 5, and a sliding plate 7 is fixedly installed on the top surface of the connecting plate 6. The sliding plate 7 is movably installed in the horizontal sliding opening 4, and the concave plate 8 is fixedly installed on the top surface of the sliding plate 7. After the controller 3 turns on the electric push rod 5, the driving output end will push the connecting plate 6 to move inward. The connecting plate 6 will drive the sliding plate 7 to slide in the horizontal sliding opening 4, and the sliding plate 7 will drive the concave plate 8 to move on the top surface of the concave frame 1, so that two automotive parts can be quickly butted together for spot welding after being clamped and fixed;

[0022] As Figure 3As shown, a vertical sliding opening 9 is provided on the inner side wall of the concave plate 8, and rotating holes 10 are respectively provided on the top and bottom surfaces of the concave plate 8. Rotating rods 12 are fixedly installed at the upper and lower ends of the bidirectional threaded rod 11, and the rotating rods 12 are movably installed in the rotating holes 10. A knob 13 is also fixedly installed at the top end of the upper rotating rod 12. When clamping and fixing automotive parts of different thicknesses, the knob 13 on the top surface of the concave plate 8 can be rotated. The knob 13 will drive the rotating rod 12 to rotate in the rotating hole 10, and the rotating rod 12 will drive the bidirectional threaded rod 11 to rotate;

[0023] As Figure 3 shown, two concave clamping seats 14 are symmetrically arranged up and down. A sliding block 15 is fixedly installed on the outer side wall of the concave clamping seat 14. The sliding block 15 is movably installed in the vertical sliding opening 9. A connecting block 16 is fixedly installed on the outer side wall of the sliding block 15. A threaded hole 17 is provided on the top surface of the connecting block 16 and is threadedly connected to the bidirectional threaded rod 11 through the threaded hole 17. Under the rotation of the bidirectional threaded rod 11, the symmetrically arranged connecting blocks 16 will respectively move relatively along the bidirectional threaded rod 11 through the threaded holes 17 on the top surface and drive the sliding block 15 to move in the vertical sliding opening 9. The sliding block 15 will drive the concave clamping seat 14 to move synchronously until the automotive part is clamped and limited between the symmetrically arranged concave clamping seats 14;

[0024] As Figure 3 shown, shooting holes 18 are respectively provided on the opposite side walls of the upper and lower concave clamping seats 14. An optoelectronic sensor transmitter 19 is fixedly installed on the top surface of the upper concave clamping seat 14, and an optoelectronic sensor receiver 20 is also fixedly installed on the front end wall of the concave clamping seat 14. An optoelectronic sensor receiver 20 corresponding to the optoelectronic sensor transmitter 19 is fixedly installed on the bottom surface of the lower concave clamping seat 14. When the automotive part is placed between the symmetrically arranged concave clamping seats 14, since the infrared rays emitted by the optoelectronic sensor transmitter 19 installed on the top surface of the upper concave clamping seat 14 pass through the shooting holes 18 provided on the upper and lower concave clamping seats 14 and are received by the anti-leakage indicator light 21 installed on the bottom surface of the lower concave clamping seat 14, an infrared ray detection path will be formed between the symmetrically arranged concave clamping seats 14. Therefore, when the automotive part is placed between the concave clamping seats 14, it will block this path and cause the optoelectronic sensor to generate an electrical signal and transmit it to the controller 3. After receiving the electrical signal, the controller 3 will turn on the anti-leakage indicator light 21 and keep the anti-leakage indicator light 21 constantly on until the automotive part no longer blocks the path between the optoelectronic sensor transmitter 19 and the optoelectronic sensor receiver 20. Thus, it can be judged whether there is a missing part by observing whether the anti-leakage indicator light 21 is on.

[0025] It should be noted that the present utility model is a leakage prevention structure for a spot welding fixture of automotive parts. When two automotive parts are welded together by spot welding, the square tubular parts to be welded are sequentially placed between the upper and lower symmetric concave clamp seats 14. At this time, since the infrared rays emitted by the photoelectric sensor transmitter 19 installed on the top surface of the upper concave clamp seat 14 pass through the radiation holes 18 opened on the upper and lower concave clamp seats 14 respectively and are received by the leakage prevention indicator lamp 21 installed on the bottom surface of the lower concave clamp seat 14, an infrared ray detection path will be formed between the upper and lower symmetric concave clamp seats 14. Therefore, when the automotive parts are placed between the concave clamp seats 14, this path will be blocked, and the photoelectric sensor will generate an electrical signal and transmit it to the controller 3. After receiving the electrical signal, the controller 3 will turn on the leakage prevention indicator lamp 21 to keep it constantly on, so as to achieve the purpose of preventing workers from missing the installation of parts. After ensuring that the leakage prevention indicator lamp 21 is on, manually rotate the knob 13 located on the top surface of the concave plate 8. The knob 13 will drive the rotating rods 12 installed at the upper and lower ends of the bidirectional threaded rod 11 to rotate in the rotating holes 10 opened on the top and bottom surfaces of the concave plate 8, and the rotating rods 12 will drive the bidirectional threaded rod 11 to rotate in the notch of the concave plate 8. At this time, the upper and lower symmetric connecting blocks 16 will respectively make relative movement operations along the bidirectional threaded rod 11 through the threaded holes 17 opened on the top surface, and the connecting blocks 16 will drive the sliding blocks 15 on the inner side walls to slide in the vertical sliding openings 9 opened on the inner side walls of the concave plate 8, and the sliding blocks 15 will drive the concave clamp seats 14 to make synchronous movement operations. The upper and lower symmetric concave clamp seats 14 make relative movement operations until the automotive parts are clamped, limited and fixed between the upper and lower symmetric concave clamp seats 14 according to their thickness and the knob 13 can no longer be rotated. Then, the electric push rods 5 installed on the left and right side walls of the inverted concave frame 1 are turned on through the controller 3. The electric push rods 5 will drive the output ends to push the connecting plate 6 inward. The sliding plate 7 installed on the top surface of the connecting plate 6 will slide in the horizontal sliding opening 4 opened on the top surface of the concave frame 1, and the sliding plate 7 will drive the concave plate 8 to move synchronously on the top surface of the concave frame 1. The left and right symmetric concave plates 8 will make relative movement operations until the two automotive parts that are clamped, limited and fixed are closely butted together after relative movement, and then the two automotive parts can be welded and fixed together by spot welding, thus achieving the purpose of facilitating the rapid clamping, fixing and butt welding of automotive parts with different thicknesses, not only improving the applicability of the device, but also improving the work efficiency.

[0026] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, various improvements can be made thereto without departing from the scope of the present utility model, and components thereof can be replaced with equivalents, or some of the technical features can be equivalently replaced. All those within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Leakage prevention structure of a spot welding fixture for automotive parts, including an inverted concave frame (1), characterized in that: A set of left - and - right symmetric leak - proof clamping mechanisms (2) is provided on the top surface of the concave - shaped frame (1). The leak - proof clamping mechanism (2) includes an electric push rod (5), a connecting plate (6), a concave - shaped plate (8), a bidirectional threaded rod (11), concave - shaped clamping seats (14), a photoelectric sensor transmitter (19), a photoelectric sensor receiver (20), and a leak - proof indicator light (21). Electric push rods (5) are respectively fixedly connected to the two side walls of the concave - shaped frame (1), and a connecting plate (6) is fixedly connected to the output end of the electric push rod (5). The connecting plate (6) is movably connected to the concave - shaped frame (1) through a sliding plate (7) on the top surface, and the concave - shaped plate (8) is fixedly connected to the top surface of the sliding plate (7). The bidirectional threaded rod (11) is movably connected to the notch of the concave - shaped plate (8) through rotating rods (12) at both ends, and two concave - shaped clamping seats (14) are respectively movably connected to the concave - shaped plate (8) through sliding blocks (15) on the outer side walls. The sliding block (15) is also movably connected to the bidirectional threaded rod (11) through a connecting block (16) on the outer side wall. A photoelectric sensor transmitter (19) is fixedly connected to the top surface of the upper concave - shaped clamping seat (14), and a leak - proof indicator light (21) is also fixedly connected to the front end wall of the upper concave - shaped clamping seat (14). A photoelectric sensor receiver (20) corresponding to the photoelectric sensor transmitter (19) is fixedly connected to the bottom surface of the lower concave - shaped clamping seat (14).

2. The leak prevention structure of a spot welding fixture for automotive parts according to claim 1, characterized in that: A controller (3) is fixedly installed at the bottom of the left inner side wall of the concave - shaped frame (1), and the controller (3) is electrically connected to the electric push rod (5), the photoelectric sensor transmitter (19), the photoelectric sensor receiver (20), and the leak - proof indicator light (21) through connecting wires respectively.

3. The leak prevention structure of a spot welding fixture for automotive parts according to claim 2, characterized in that: A transverse sliding opening (4) is formed on the top surface of the concave - shaped frame (1), and electric push rods (5) are respectively fixedly installed on the left and right side walls of the concave - shaped frame (1). A connecting plate (6) is fixedly installed at the output end of the electric push rod (5), and a sliding plate (7) is fixedly installed on the top surface of the connecting plate (6). The sliding plate (7) is movably installed in the transverse sliding opening (4), and the concave - shaped plate (8) is fixedly installed on the top surface of the sliding plate (7).

4. The leak prevention structure of a spot welding fixture for automotive parts according to claim 3, characterized in that: A vertical sliding opening (9) is formed on the inner side wall of the concave - shaped plate (8), and rotating holes (10) are respectively formed on the top and bottom surfaces of the concave - shaped plate (8). Rotating rods (12) are respectively fixedly installed at the upper and lower ends of the bidirectional threaded rod (11), and the rotating rods (12) are movably installed in the rotating holes (10). A knob (13) is also fixedly installed at the top end of the upper rotating rod (12).

5. The leak prevention structure of a spot welding fixture for automotive parts according to claim 4, characterized in that: The two concave - shaped clamping seats (14) are in an upper - and - lower symmetric state, and sliding blocks (15) are fixedly installed on the outer side walls of the concave - shaped clamping seats (14). The sliding blocks (15) are movably installed in the vertical sliding opening (9), and a connecting block (16) is fixedly installed on the outer side wall of the sliding block (15). A threaded hole (17) is formed on the top surface of the connecting block (16) and is threadedly connected to the bidirectional threaded rod (11) through the threaded hole (17).

6. The leak prevention structure of a spot welding fixture for automotive parts according to claim 5, characterized in that: Perforations (18) are respectively formed in the opposite side walls of the upper and lower concave holders (14). An optoelectronic sensor transmitter (19) is fixedly installed on the top surface of the upper concave holder (14), and an optoelectronic sensor receiver (20) is also fixedly installed on the front end wall of the concave holder (14). An optoelectronic sensor receiver (20) corresponding to the optoelectronic sensor transmitter (19) is fixedly installed on the bottom surface of the lower concave holder (14).

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