Spot welding machine with protection mechanism

Abstract

The utility model belongs to the technical field of spot welding machines, and discloses a spot welding machine with a protection mechanism, which comprises a main body device used for supporting pressing spot welding, and a supporting device used for supporting a sliding lower cover is arranged at the top of the main body device. The protection device is installed on the supporting device and used for independently sliding the lower cover for protection and locally and upwards ejecting out the surface of a profiling contact workpiece; the protection device comprises a fixing sleeve, a baffle is arranged on the inner side of the fixing sleeve, and two sliding blocks are symmetrically arranged on the two sides of the rear portion of the baffle. According to the spot welding machine with the protection mechanism, due to the arrangement that a part of the spot welding machine upwards ejects out of the surface of a profiling contact workpiece, when an irregular workpiece is encountered, the surface of the irregular workpiece is in profiling contact, the spot welding space is completely covered, and the protection effect is improved; through the arrangement of buffer contact, the workpiece is prevented from being scratched, and damage to the workpiece is reduced; and the depth of the lower cover can be freely adjusted by independently sliding the lower cover, so that the use flexibility of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric welding machines, in particular to a spot welding machine with a protection mechanism. Background Art

[0002] Spot welding machine is a kind of mechanical equipment, which adopts the principle of double-sided double-point overcurrent welding. When working, two electrodes pressurize the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes, and when the welding current flows from one electrode to the other electrode, an instantaneous heat welding is formed at the two contact resistance points, and the welding current instantly flows from the other electrode along the two workpieces to this electrode to form a loop, and will not damage the internal structure of the welded workpiece; the advantages of this welding method are simple equipment structure, flexible and convenient operation, and high production efficiency; the disadvantages are low joint strength and cannot withstand mechanical stress such as impact vibration load.

[0003] In comparison, a Chinese patent with authorization announcement number CN220554939U discloses a spot welding machine with protection, including a main unit, a first welding head is installed on the front end surface of the main unit, and a second welding head is also installed on the front end surface of the main unit, a protrusion is fixedly connected to the surface of one side of the first welding head, a groove is opened on the lower end surface of the protrusion, and a spring is placed inside the protrusion, a slider is connected to one end of the spring, a first baffle is fixedly connected to the surface of one end of the slider, connecting blocks are placed on both side surfaces of the second welding head, screws are connected through the connecting block and the surface of one side of the second welding head, and a second baffle is fixedly connected to the surface of one side of the connecting block.

[0004] When spot welding an irregular workpiece, the baffle plate as a whole will be lifted up by the workpiece, and the bottom of the baffle plate cannot completely contact the surface of the workpiece, thereby failing to completely cover the spot welding space, reducing the protective effect. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of the utility model is to provide a spot welding machine with a protection mechanism to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A spot welding machine with a protective mechanism, comprising a main body device for supporting downward pressure spot welding, a supporting device for supporting a sliding lower cover is arranged on the top of the main body device, and also comprising a protective device installed on the supporting device for protecting the sliding lower cover alone and partially ejecting upward to contact the surface of a workpiece in a contoured manner;

[0008] The protective device comprises a fixed sleeve, a baffle is arranged inside the fixed sleeve, two slide blocks are symmetrically arranged on both sides behind the baffle, a plurality of baffles are slidably installed in the fixed sleeve, a limiting block is arranged on the top of the baffle, and a cushion block is arranged at the bottom of the baffle.

[0009] Furthermore: the main device includes a host, a support plate is arranged on the top of the host, an electric push rod is installed on the support plate, a mounting block is arranged at the bottom of the electric push rod, an upper pole head is arranged below the mounting block, a lower pole head is arranged below the upper pole head, a mounting column is arranged at the bottom of the lower pole head, and a workbench is arranged between the mounting column and the host.

[0010] Furthermore: the supporting device comprises a mounting sleeve, two connecting plates are symmetrically arranged on both sides of the mounting sleeve, and a slide rail is arranged on a side of the connecting plate away from the mounting sleeve.

[0011] Furthermore: there are twenty-four baffle bars, and the pads are made of silicone.

[0012] Furthermore: the workbench is made of copper.

[0013] Furthermore, the slider is slidably connected to the slide rail, and the two are interference fit.

[0014] Compared with the prior art, the beneficial effects are:

[0015] 1. Through the setting of partial upward ejection and contour contact with the workpiece surface, when encountering an irregular workpiece, the contour contact is made on its surface to completely cover the spot welding space, thereby improving the protection effect;

[0016] 2. The buffer contact setting can prevent the workpiece from being scratched and reduce the damage to the workpiece;

[0017] 3. By setting the lower cover separately, the depth of the lower cover can be freely adjusted, which improves the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a spot welding machine with a protective mechanism described in the utility model;

[0019] Figure 2 It is an axonometric diagram of the main device of a spot welding machine with a protective mechanism described in the utility model;

[0020] Figure 3 It is an axonometric diagram of a support device of a spot welding machine with a protective mechanism described in the utility model;

[0021] Figure 4 The utility model is an axonometric diagram of a protective device of a spot welding machine with a protective mechanism.

[0022] In the accompanying drawings, 101, main machine; 102, support plate; 103, electric push rod; 104, mounting block; 105, upper pole head; 106, lower pole head; 107, mounting column; 108, workbench; 201, mounting sleeve; 202, connecting plate; 203, slide rail; 301, fixing sleeve; 302, slider; 303, baffle; 304, limit block; 305, baffle bar; 306, cushion block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 4 A spot welding machine with a protective mechanism includes a main device for supporting downward pressure spot welding, a supporting device for supporting a sliding lower cover is arranged on the top of the main device, and also includes a protective device installed on the supporting device for protecting the sliding lower cover alone and partially ejecting it upward to contact the workpiece surface.

[0025] In this embodiment: the main device includes a host 101, a support plate 102 is provided on the top of the host 101, an electric push rod 103 is installed on the support plate 102, a mounting block 104 is provided at the bottom of the electric push rod 103, an upper pole head 105 is provided below the mounting block 104, a lower pole head 106 is provided below the upper pole head 105, a mounting column 107 is provided at the bottom of the lower pole head 106, a workbench 108 is provided between the mounting column 107 and the host 101, and the workbench 108 is made of copper. The workpiece is placed on the workbench 108 at the bottom of the host 101, and the lower pole head 106 is located below the welding point, and then the support plate 102 supports the electric push rod 103 to extend through the mounting block 104 to drive the upper pole head 105 to press down, and cooperate with the lower pole head 106 to spot weld the workpiece under the support of the mounting column 107;

[0026] In this embodiment: the support device includes a mounting sleeve 201, two connecting plates 202 are symmetrically arranged on both sides of the mounting sleeve 201, a slide rail 203 is arranged on the side of the connecting plate 202 away from the mounting sleeve 201, and the mounting sleeve 201 supports the slide rail 203 through the connecting plate 202 to provide support for the protective device;

[0027] In this embodiment, the protective device includes a fixed sleeve 301, a baffle 303 is arranged inside the fixed sleeve 301, two sliders 302 are symmetrically arranged on both sides behind the baffle 303, a plurality of baffles 305 are slidably installed in the fixed sleeve 301, a limited block 304 is arranged on the top of the baffle 305, a cushion block 306 is arranged at the bottom of the baffle 305, and twenty-four baffles 305 are arranged. The cushion block 306 is made of silicone material, and the slider 302 is slidably connected to the slide rail 203, and the two are interference fit. The slider 302 drives the fixed sleeve 301 to move between the installation sleeve 201 and the connecting sleeve. The support of the connecting plate 202 slides downward along the slide rail 203, and the fixed sleeve 301 drives the baffle 305 and the baffle plate 303 to move downward to cover the spot welding space. During the lower covering process, the pad 306 at the bottom of the baffle 305 located directly above the workpiece will contact the workpiece and be lifted upward by the workpiece, so that the other baffles 305 hung on the fixed sleeve 301 through the limit block 304 can continue to move downward until the slider 302 moves to the bottom of the slide rail 203. At this time, the baffle 305 cooperates with the baffle plate 303 to block the sides and top of the spot welding space to form a protection.

[0028] Working principle: Place the workpiece on the workbench 108 at the bottom of the main machine 101, and make the lower pole head 106 located below the welding point; then make the slider 302 drive the fixing sleeve 301 to slide downward along the slide rail 203 under the support of the mounting sleeve 201 and the connecting plate 202, and the fixing sleeve 301 drives the baffle 305 and the baffle plate 303 to move downward to cover the spot welding space. During the covering process, the pad 306 at the bottom of the baffle 305 located just above the workpiece will buffer the contact with the workpiece and be It is lifted up so that the other baffles 305 hung on the fixed sleeve 301 through the limit block 304 can continue to move downward until the slider 302 moves to the bottom of the slide rail 203. At this time, the baffles 305 cooperate with the baffle plate 303 to block the side and top of the spot welding space to form a protection; then the support plate 102 supports the electric push rod 103 to extend through the mounting block 104 to drive the upper pole head 105 to press down, and cooperate with the lower pole head 106 to spot weld the workpiece under the support of the mounting column 107.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spot welding machine with a protective mechanism, comprising a main body device for supporting downward pressure spot welding, a supporting device for supporting a sliding lower cover is arranged on the top of the main body device, characterized in that: It also includes a protective device installed on the supporting device for individually sliding the lower cover to protect and partially ejecting upwards to contact the workpiece surface; The protective device comprises a fixed sleeve (301), a baffle (303) is arranged inside the fixed sleeve (301), two sliders (302) are symmetrically arranged on both sides behind the baffle (303), a plurality of baffles (305) are slidably installed inside the fixed sleeve (301), a limiting block (304) is arranged on the top of the baffle (305), and a cushion block (306) is arranged on the bottom of the baffle (305).

2. A spot welding machine with a protective mechanism according to claim 1, characterized in that: The main device comprises a main machine (101), a support plate (102) is arranged on the top of the main machine (101), an electric push rod (103) is installed on the support plate (102), a mounting block (104) is arranged at the bottom of the electric push rod (103), an upper pole head (105) is arranged below the mounting block (104), a lower pole head (106) is arranged below the upper pole head (105), a mounting column (107) is arranged at the bottom of the lower pole head (106), and a workbench (108) is arranged between the mounting column (107) and the main machine (101).

3. A spot welding machine with a protective mechanism according to claim 1, characterized in that: The supporting device comprises a mounting sleeve (201), two connecting plates (202) are symmetrically arranged on both sides of the mounting sleeve (201), and a slide rail (203) is arranged on a side of the connecting plate (202) away from the mounting sleeve (201).

4. A spot welding machine with a protective mechanism according to claim 1, characterized in that: Twenty-four blocking bars (305) are provided, and the pads (306) are made of silica gel.

5. A spot welding machine with a protective mechanism according to claim 2, characterized in that: The workbench (108) is made of copper.

6. A spot welding machine with a protective mechanism according to claim 3, characterized in that: The sliding block (302) is slidably connected to the sliding rail (203), and the two are interference fit.

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