A cold welding machine for spot welding of galvanized sheet metal

Abstract

The utility model belongs to the technical field of cold welding machine, concretely is a kind of cold welding machine for galvanized sheet spot welding, including base, the upper surface of base is slidably installed with two left and right symmetrical clamping plates, the opposite surface of two clamping plates is rotatably installed with rotary gear, the opposite surface of rotary gear is fixedly installed with support plate, the inside of support plate is slidably installed with two upper and lower symmetrical fixed plates, and the one end of fixed plate is provided with horizontal part, the middle part of the opposite surface of two support plates is provided with limit slot, and the opposite surface of horizontal part close to limit slot of fixed plate is fixedly installed with cushion block. Through rotary gear, fixed plate, horizontal part, cushion block and limit slot etc. Setting, it can be stabilized fixed to galvanized sheet, improves welding quality, can also adjust welding angle simultaneously, improves welding effect, can also be turned over after welding, need not staff to manually take down and re-fix, reduce labor intensity, improve work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of cold welding machine technology, and in particular relates to a cold welding machine for spot welding of galvanized sheets. Background Technology

[0002] Galvanized sheet refers to steel sheet with a layer of zinc on its surface. Spot welding is a welding method that uses columnar electrodes to form weld points between the contact surfaces of two overlapping workpieces. Cold welding machines use the high heat energy generated by micro-electric instantaneous discharge to melt special welding wire onto the damaged parts of the workpiece, firmly fusing it with the original substrate. Two galvanized sheets are welded using spot welding.

[0003] A cold welding machine for spot welding galvanized sheet metal, as described in patent application number CN202323027491.2, includes a base. The base is an L-shaped block with one vertical and one horizontal section. A cold welding machine is fixedly connected to the upper side of the vertical block. A placement ring is fixedly connected to the front side of the cold welding machine. A welding gun is mounted on the placement ring and electrically connected to the cold welding machine. A sliding groove is provided on the upper side of the horizontal block, and a connecting groove is provided on the left side of the vertical block. A second roller is rotatably connected to the top wall of the connecting groove. A clamping mechanism and a transmission mechanism are provided on the base. The transmission mechanism can drive the second roller to rotate. In this way, the galvanized sheet metal can be moved during the welding process, allowing workers to weld in place without frequently moving the cold welding machine, thus reducing the labor intensity of workers.

[0004] Existing technology uses a transmission mechanism to move galvanized sheets during the welding process, reducing the labor intensity of workers. However, it still has certain shortcomings in overall use: Firstly, when welding two relatively thick galvanized sheets, or when high sealing requirements are needed, double-sided welding is required to ensure welding quality. Existing technology requires manual flipping and fixing of the sheets during double-sided welding, which wastes a lot of human resources, increases the labor intensity of construction workers, and results in low overall welding efficiency. Secondly, during welding, zinc can easily penetrate along grain boundaries to form brittle compounds, which reduces the plasticity of the weld metal. If not detected in time, residual stress may cause cracks, significantly reducing the joint strength. Utility Model Content

[0005] In order to overcome the technical problems of existing double-sided welding of galvanized sheets, which relies on manual flipping and fixing, resulting in high labor costs, high labor intensity, and low overall efficiency, and the fact that zinc elements easily penetrate along the grain boundaries during the welding process to form brittle compounds, reducing the plasticity of the weld and significantly weakening the joint strength, this utility model provides a cold welding machine for spot welding of galvanized sheets.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cold welding machine for spot welding galvanized sheets, comprising a base, a cold welding machine body fixedly mounted on one side of the base, two symmetrically arranged clamping plates slidably mounted on the upper surface of the base, a rotating gear rotatably mounted on the opposite face of the two clamping plates, a support plate fixedly mounted on the opposite face of the rotating gear, two symmetrically arranged fixed plates slidably mounted inside the support plate, a horizontal part provided at one end of the fixed plate, a limiting groove formed in the middle of the opposite face of the two support plates, and a pad fixedly mounted on the opposite face of the horizontal part of the fixed plate near the limiting groove, the height of the pad being consistent with the horizontal part.

[0007] Optionally, the upper surface of the base is provided with two sets of first sliding grooves arranged symmetrically from left to right, and the clamping plate is slidably installed inside the first sliding groove.

[0008] Optionally, fixing blocks are fixedly installed on both sides of the base, and threaded rods are threaded inside the fixing blocks, with one end of the threaded rods rotatably connected to the clamping plate.

[0009] Optionally, two limiting blocks are fixedly installed between the support plate and the rotating gear, and a bidirectional lead screw is threaded between the two limiting blocks, with the two fixing plates threaded onto the surface of the bidirectional lead screw.

[0010] Optionally, a fixed seat is fixedly installed on the upper surface of the middle part of the base, and a slide rod is rotatably installed inside the fixed seat. The two ends of the slide rod slide through the clamping plate and rotate in cooperation. A transmission gear that meshes with the rotating gear is fixedly installed on the surface of the slide rod.

[0011] Optionally, a positioning block is fixedly installed on the front surface of the clamping plate, and a plug rod is slidably installed inside the positioning block. The plug rod is inserted into the tooth groove of the transmission gear, and a limit button is threadedly fitted on the top of the positioning block. The bottom end of the limit button abuts against the plug rod.

[0012] Optionally, a distance sensor and an indicator light are fixedly installed on both sides of the upper surface of the mounting base.

[0013] Optionally, a telescopic rod is fixedly installed in the middle of the fixed base, and a detector is fixedly installed at the telescopic end of the telescopic rod.

[0014] In summary, compared with existing technologies, the beneficial effects of this solution are as follows: (1) This utility model can stably fix the galvanized sheet by means of rotating gear, fixing plate, horizontal part, pad block and limiting groove, so as to avoid displacement of the galvanized sheet during welding, improve welding quality, adjust welding angle to improve welding effect, and flip it after welding without the need for workers to manually remove and refix it, thereby reducing labor intensity and improving work efficiency. (2) By setting up distance sensors, indicator lights, telescopic rods and detectors, this utility model can achieve precise docking when galvanized plates are joined, effectively improving the welding quality. At the same time, it can detect the weld in time, avoid quality problems, improve the welding strength of the joint, and save subsequent processing time. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 Enlarged structural diagram at point A in the diagram; Figure 3 for Figure 1 Enlarged structural diagram at point B in the diagram; Figure 4 for Figure 1 Enlarged structural diagram at point C; Figure 5 This is a schematic diagram of the structure of the vacuum cleaner of this utility model.

[0016] In the diagram: Base 10; Cold welding machine body 11; First slide groove 12; Clamping plate 13; Fixing block 14; Threaded rod 15; Rotating gear 16; Fixing rod 17; Support plate 18; Second slide groove 19; Fixing plate 20; Horizontal part 21; Pad 22; Limiting groove 23; Limiting block 24; Bidirectional lead screw 25; Fixing seat 26; Slide rod 27; Transmission gear 28; Positioning block 29; Insert rod 30; Limit button 31; Distance sensor 32; Indicator light 33; Telescopic rod 34; Detector 35; Vacuum cleaner 36. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example 1:

[0018] refer to Figure 1 A cold welding machine for spot welding galvanized sheet includes a base 10, and a cold welding machine body 11 is fixedly installed on one side of the middle part of the base 10. The cold welding machine body 11 is prior art and will not be described in detail in this solution. It is used to spot weld galvanized sheet.

[0019] Further reference Figure 1 The upper surface of the base 10 has two sets of first sliding grooves 12 arranged symmetrically on the left and right. A clamping plate 13 is slidably installed inside each set of first sliding grooves 12. Fixing blocks 14 are fixedly installed at both ends of the base 10. A threaded rod 15 is threaded inside the fixing block 14. The outer side of the clamping plate 13 is rotatably connected to one end of the threaded rod 15. When in use, rotating the threaded rod 15 causes the threaded rod 15 to move towards the clamping plate 13 as a whole due to the threaded engagement between the threaded rod 15 and the fixing block 14. Because the threaded rod 15 is rotatably connected to the clamping plate 13, it drives the clamping plate 13 to move centered inside the first sliding groove 12.

[0020] Further reference Figure 1 and Figure 4 A rotating gear 16 is rotatably mounted on the opposite face of the clamping plate 13. Two fixing rods 17 are fixedly mounted on the opposite face of the rotating gear 16. A support plate 18 is fixedly mounted on the end of the two fixing rods 17 away from the rotating gear 16. The support plate 18 has two symmetrical upper and lower sliding grooves 19. A limiting block 24 is fixedly mounted between the support plate 18 and the rotating gear 16. A bidirectional screw 25 is rotatably mounted between the two limiting blocks 24. The surface of the bidirectional screw 25 is threaded with a fixing plate 20 that slides inside the second sliding groove 19. In use, the galvanized sheet is placed between the two fixing plates 20, and then the bidirectional screw 25 is rotated. Because the bidirectional screw 25 is threaded with the two fixing plates 20, the two fixing plates 20 are moved in the center under the limiting of the second sliding groove 19, clamping and fixing the galvanized sheet. With the above scheme, the clamping plate 13 is moved in the center, thereby completing the butt joint of the two galvanized sheets, which facilitates the subsequent welding work.

[0021] Further reference Figure 1 A horizontal section 21 is provided at the end of the fixing plate 20 away from the support plate 18, and a limiting groove 23 is opened in the middle of the opposite surfaces of the two support plates 18. A pad 22 is fixedly installed on the opposite surface of the horizontal section of the fixing plate 20 near the limiting groove 23. The height of the pad 22 is consistent with that of the horizontal section 21. In use, the galvanized sheet is first placed in the limiting groove 23 for pre-support. Then, the pad 22 supports one end of the galvanized sheet, and the horizontal section 21 supports the other end of the galvanized sheet, thereby clamping the galvanized sheet, which can improve its stability and thus improve the welding quality. During the welding process, the rotating gear 16 can be rotated to change the angle of the galvanized sheet, which is convenient for the workers to weld. After welding one side of the galvanized sheet, the rotating gear 16 can also be rotated to flip the galvanized sheet over and weld the other side without removing the galvanized sheet and re-fixing it, which reduces labor intensity and greatly speeds up work efficiency.

[0022] Further reference Figure 1 , Figure 2 and Figure 3A fixed base 26 is fixedly installed on the upper middle surface of the base 10. A sliding rod 27 is rotatably installed inside the fixed base 26, and both ends of the sliding rod 27 slide through the clamping plate 13 and rotate to facilitate the centering and sliding of the clamping plate 13. A transmission gear 28 that meshes with the rotating gear 16 is fixedly installed on the surface of the sliding rod 27. This arrangement allows the rotating gear 16 to rotate synchronously, facilitating the simultaneous control of the rotation angle of the two galvanized plates. A positioning block 29 is fixedly installed on the front surface of the clamping plate 13. The internal sliding... The positioning block 29 is equipped with a plug rod 30. The top of the positioning block 29 is threaded with a limit button 31. The bottom end of the limit button 31 can abut against the plug rod 30. When the rotating gear 16 rotates to adjust the angle of the galvanized sheet or flips it, the rotating gear 16 can drive the transmission gear 28 that meshes with it to rotate. After the adjustment is completed, the plug rod 30 that slides in the positioning block 29 can be inserted into the tooth groove of the transmission gear 28, and the limit button 31 can be rotated so that the bottom end of the limit button 31 abuts against the plug rod 30, fixing the plug rod 30 and completing the limit, thus ensuring the stability during welding. Example 2:

[0023] A cold welding machine for spot welding galvanized sheets, further illustrated in Example 1, is provided for reference. Figure 1 and Figure 2 A distance sensor 32 is fixedly installed on the top of the mounting base 26. The distance sensor 32 is existing technology and is used to detect the butt joint distance between two galvanized sheets. It will not be described in detail in this solution. An indicator light 33 is also fixedly installed on the upper surface of the mounting base 26. When the two galvanized sheets are butt jointed, the distance sensor 32 detects that the galvanized sheets are butt jointed and causes the indicator light 33 to flash green, indicating that the butt joint is accurate. Then the movement of the clamping plate 13 and the galvanized sheets is stopped, and welding is then carried out to achieve precise control and improve the welding quality.

[0024] Further reference Figure 2 A telescopic rod 34 is fixedly installed in the middle of the fixed base 26. A detector 35 is fixedly installed at the telescopic end of the telescopic rod 34. The detector 35 is existing technology and is used to detect the weld quality of galvanized steel sheets. It will not be described in detail in this solution. After welding is completed on one side of the galvanized steel sheet, it is flipped over with the weld facing down. At this time, the telescopic rod 34 will lift the detector 35 to detect the weld. If the weld is found to be unqualified, it can be detected and dealt with in time, avoiding the cumbersome subsequent processing work and improving the use effect. Example 3:

[0025] A cold welding machine for spot welding galvanized sheets, further exemplified based on Embodiment 1 and Embodiment 2, see reference. Figure 5The cold welding machine body 11 is equipped with a vacuum cleaner 36 inside. The vacuum cleaner hood of the vacuum cleaner 36 faces the weld seam. When welding galvanized plates, the vacuum cleaner 36 performs vacuuming treatment on the weld seam to avoid welding fume pollution of the environment. At the same time, it removes the splashed welding slag and dust to prevent them from adhering to the surfaces of the rotating gear 16 and the threaded rod 15, thereby improving their service life.

[0026] Working principle: First, the galvanized sheet is placed in the limiting groove 23 for pre-support. Then, the pad 22 supports one end of the galvanized sheet, and the horizontal part 21 supports the other end. Then, the double-acting screw 25 is rotated to move the two fixing plates 20 in the center, clamping the galvanized sheet and completing the fixation. The threaded rod 15 is rotated to move the clamping plate 13 in the first sliding groove 12 in the center. After the distance sensor 32 detects that the galvanized sheet is docked, the indicator light 33 flashes green, stopping the movement of the clamping plate 13 and the galvanized sheet. Then, welding is performed. During welding, the vacuum cleaner 36 removes dust. After welding, the galvanized sheet is rotated, and the sliding insert rod 30 in the positioning block 29 is inserted into the tooth groove of the transmission gear 28. The limiting button 31 is rotated so that the bottom end of the limiting button 31 abuts against the insert rod 30, fixing the insert rod 30 and completing the limiting. At this time, the weld is facing downward, and the telescopic rod 34 works to lift the detector 35 to detect the weld. If the weld is found to be unqualified, it can be detected and dealt with in time.

[0027] Finally, it should be noted that the cold welding machine for spot welding of galvanized sheets of this utility model can be connected and fixed by conventional mechanical connection structures. The control system and connection method required between multiple electrical components and driving components can also be achieved by conventional means and can be equipped with corresponding sensors and detectors. As long as the beneficial effect or the specific actions in the above work can be achieved, it can be implemented.

[0028] The components of the cold welding machine body 11, distance sensor 32, indicator light 33, detector 35, and vacuum cleaner 36 in this utility model are all purchased from the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0029] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0030] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0031] The foregoing description presents and describes several preferred embodiments of this application. However, as mentioned above, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A cold welding machine for spot welding galvanized sheet metal, comprising a base (10), wherein a cold welding machine body (11) is fixedly mounted on one side of the base (10), characterized in that, Two symmetrical clamping plates (13) are slidably mounted on the upper surface of the base (10). A rotating gear (16) is rotatably mounted on the opposite face of the two clamping plates (13). A support plate (18) is fixedly mounted on the opposite face of the rotating gear (16). Two symmetrically mounted fixing plates (20) are slidably mounted inside the support plate (18). A horizontal part (21) is provided at one end of the fixing plate (20). A limiting groove (23) is opened in the middle of the opposite face of the two support plates (18). A pad (22) is fixedly mounted on the opposite face of the horizontal part of the fixing plate (20) near the limiting groove (23). The height of the pad (22) is consistent with that of the horizontal part (21).

2. A cold welding machine for spot welding galvanized sheets according to claim 1, characterized in that, The upper surface of the base (10) is provided with two sets of first sliding grooves (12) arranged symmetrically on the left and right, and the clamping plate (13) is slidably installed inside the first sliding groove (12).

3. A cold welding machine for spot welding galvanized sheets according to claim 2, characterized in that, Fixing blocks (14) are fixedly installed on both sides of the base (10). The internal threads of the fixing blocks (14) are fitted with threaded rods (15), and one end of the threaded rods (15) is rotatably connected to the clamping plate (13).

4. A cold welding machine for spot welding galvanized sheets according to claim 1, characterized in that, Two limiting blocks (24) are fixedly installed between the support plate (18) and the rotating gear (16). A two-way lead screw (25) is threaded between the two limiting blocks (24), and two fixing plates (20) are threaded onto the surface of the two-way lead screw (25).

5. A cold welding machine for spot welding galvanized sheets according to claim 3, characterized in that, A fixed seat (26) is fixedly installed on the upper surface of the middle part of the base (10). A slide rod (27) is rotatably installed inside the fixed seat (26). The two ends of the slide rod (27) slide through the clamping plate (13) and rotate together. A transmission gear (28) that meshes with the rotating gear (16) is fixedly installed on the surface of the slide rod (27).

6. A cold welding machine for spot welding galvanized sheets according to claim 5, characterized in that, A positioning block (29) is fixedly installed on the front surface of the clamp (13). A plug rod (30) is slidably installed inside the positioning block (29). The plug rod (30) is inserted into the tooth groove of the transmission gear (28). A limit button (31) is threadedly fitted on the top of the positioning block (29). The bottom end of the limit button (31) abuts against the plug rod (30).

7. A cold welding machine for spot welding galvanized sheets according to claim 5, characterized in that, A distance sensor (32) and an indicator light (33) are fixedly installed on both sides of the upper surface of the mounting base (26).

8. A cold welding machine for spot welding galvanized sheets according to claim 7, characterized in that, A telescopic rod (34) is fixedly installed in the middle of the fixed base (26), and a detector (35) is fixedly installed at the telescopic end of the telescopic rod (34).

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