Electric resistance welding structure and welding head thereof

Abstract

The utility model discloses a resistance welding structure and a welding head thereof, and relates to the field of resistance welding. Comprising at least one driving device, at least one base, at least one support, at least one elastic piece, at least one rotating shaft, at least one buckling block and at least one electrode block, the driving device is connected with the base and installed on the support, and the electrode block is installed below the base through the support; one position of the buckling block is connected with one end of the elastic piece, the other position of the buckling block is movably installed at the bottom of the base through the rotating shaft, and the other end of the elastic piece is elastically connected with the base so that the buckling block can be arranged at the bottom of the base; the electrode block is provided with a welding head installation through hole, and the welding head installation through hole of the electrode block is arranged below the buckling block opposite to the buckling block. According to the technical scheme, the welding head and the welding head base are installed and fixed in a direct insertion mode, the direct insertion mode is high in efficiency in the welding head disassembling, assembling and replacing process, and therefore the welding efficiency of products is improved.

Description

Technical Field

[0001] The utility model relates to the field of resistance welding, in particular to a resistance welding structure and a welding head thereof. Background Art

[0002] In the prior art, resistance welding equipment is usually used to complete welding work, but the existing resistance welding equipment often adopts a relatively simple clamping method and cannot adapt to a variety of usage scenarios. For example, during the welding process of the resistance welding equipment, when the dock rods in the upper electrode and the lower electrode are worn out or need to be replaced due to other circumstances, if the material to be welded is still between the upper electrode and the lower electrode, the presence of the material will affect the removal of the tungsten rod from the clamped equipment, resulting in inconvenience in replacement.

[0003] Based on the above problems, someone invented a Chinese utility model patent with publication number CN117020373A, named resistance welding equipment;

[0004] After testing, it was found that the welding head and welding head base installed by the technical solution of the above patent are fixed by screws. After being used several times, the welding head fixed by screws will become loose, resulting in position deviation, leading to a high defective rate of welded products; secondly, the welding head of resistance welding is usually a consumable part, and consumable parts are frequently disassembled and replaced. The screw method is less efficient during the frequent disassembly and replacement, thus affecting the welding efficiency of the product. Therefore, it is necessary to provide a resistance welding structure and its welding head to solve the above problems. Utility Model Content

[0005] The purpose of the present application is to provide a resistance welding structure and a welding head thereof to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A resistance welding structure, comprising at least one driving device, at least one base, at least one bracket, at least one elastic member, at least one rotating shaft, at least one buckle block, and at least one electrode block, wherein the driving device is connected to the base and mounted on the bracket, and the electrode block is mounted below the base through the bracket;

[0008] The buckle block is connected to one end of the elastic member at one end, and is movably mounted on the bottom of the base through the rotating shaft at the other end. The other end of the elastic member is elastically connected to the base to set the buckle block on the bottom of the base.

[0009] The electrode block is provided with a welding head mounting through hole, which is arranged in an angle shape. The welding head mounting through hole of the electrode block is arranged below the buckle block facing the buckle block.

[0010] Preferably, at least one buckle block mounting groove and at least one elastic member mounting groove are formed at the bottom of the base, the buckle block is connected to one end of the elastic member at one end, and the other end is rotatably arranged in the buckle block mounting groove through the rotating shaft, and the other end of the elastic member is elastically connected to the elastic member mounting groove to set the buckle block at the bottom of the base.

[0011] Preferably, another buckle block matching with the buckle block is arranged at intervals on the base on the buckle block side.

[0012] Preferably, the other buckle block also includes the elastic member and the rotating shaft. One end of the other buckle block is connected to one end of the elastic member, and the other end is rotatably connected to the rotating shaft and is inserted into the buckle block mounting groove. The other end of the elastic member is elastically connected to the elastic member mounting groove to set the other buckle block at the bottom of the base.

[0013] Preferably, a welding head limiting through hole connected to the welding head mounting through hole is opened on the side of the electrode block; the welding head limiting through hole also includes a welding head limiting block and the driving device; one end of the welding head limiting block is connected to the driving device, and the other end is recessed in the welding head limiting through hole, and the driving device can drive the welding head limiting block to extend and limit between the welding head mounting through hole and the welding head limiting through hole.

[0014] Preferably, a welding head limiting through hole connected to the welding head mounting through hole is opened on the side of the electrode block; the welding head limiting through hole also includes a welding head limiting protrusion, the elastic member, and the screw / bolt; one end of the elastic member is connected to the welding head limiting protrusion and elastically protrudes at the welding head mounting through hole through the welding head limiting through hole, and the screw / bolt is threadedly connected to the other end of the elastic member to fix it at the welding head limiting through hole.

[0015] Preferably, the buckle block and the other buckle block are both L-shaped structures, the L-shaped buckle block and the other L-shaped buckle block are both provided with protrusions at the bottom, and the sides are both provided with inverted hook arc protrusions; the bottoms of the L-shaped buckle block and the other L-shaped buckle block are connected to one end of the elastic member, and the tops are rotatably inserted into the buckle block mounting groove through the rotating shaft.

[0016] Preferably, the elastic member is composed of one of a spring, a spring sheet and a tension spring.

[0017] Preferably, a welding head hiding hole is opened at the base above the welding head mounting through hole, and the welding head hiding hole faces the welding head mounting through hole.

[0018] A resistance welding head comprises a welding head, wherein the welding head comprises a welding portion and a mounting portion, wherein the mounting portion forms an angle matching the welding head mounting through hole; the welding portion is provided with at least one buckle groove matching the L-shaped buckle block and another L-shaped buckle block.

[0019] In summary, the technical effects and advantages of the utility model are:

[0020] When welding is required, it is only necessary to insert the mounting part of the welding head into the mounting hole of the welding head. When the angle formed by the mounting part of the welding head corresponds to the angle in the mounting hole of the welding head, the angles that match each other have the function of natural limiting and clamping. During spot welding, there is an interaction force when the welding part of the welding head contacts the product to be welded, thereby making it more firmly locked during welding. Secondly, when the mounting part of the welding head passes through the mounting hole of the welding head to reach the bottom of the buckle block, the driving device a drives the base to drive the buckle block to move downward and contact the electrode block, and the buckle block elastically opens to buckle the buckle groove of the welding part of the welding head to the buckle block. Then, the driving device drives the base to drive the buckle block to move upward away from the electrode block, and the buckle block elastically resets and buckles the welding head to prevent it from falling off downward, thereby realizing a double locking function. The installation and fixing method of the welding head and the welding head base adopted in the technical solution is direct plug-in fixing. After the welding head is used many times, there will be no looseness and no position deviation, and the welding product yield is high. Secondly, the direct plug-in method is more efficient in the process of disassembling and replacing the welding head, thereby improving the welding efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the main cross-sectional structure of Example 1 and Example 2 of the utility model.

[0023] Figure 2 This is a schematic diagram of the welding head structure of the utility model.

[0024] Figure 3 It is a schematic diagram of the side cross-sectional structure of the electrode block of Example 1 and Example 4 of the utility model.

[0025] Figure 4 It is a schematic diagram of the main cross-sectional structure of Example 3 and Example 4 of the present utility model.

[0026] Figure 5 It is a schematic diagram of the working status of the main cross-sectional structure of Example 3 and Example 4 of the utility model.

[0027] Figure 6 It is a schematic diagram of the side cross-sectional structure of the electrode block of Example 2 and Example 3 of the utility model.

[0028] Figure 7It is a schematic diagram of the working status of the main cross-sectional structure of Example 3 and Example 4 of the utility model.

[0029] Figure 8 It is a schematic diagram of the working status of the main cross-sectional structure of Example 3 and Example 4 of the utility model.

[0030] Fig. 9 It is a schematic diagram of the working status of the main cross-sectional structure of Example 3 and Example 4 of the utility model.

[0031] Fig.10 The three-dimensional whole machine of the utility model embodiment 3 and embodiment 4 Figure 1 .

[0032] Fig.11 The three-dimensional whole machine of the utility model embodiment 3 and embodiment 4 Figure 2 .

[0033] Numbers in the figure: 1 a resistance welding structure; 2 base; 21 buckle block mounting groove; 22 elastic member mounting groove; 23 welding head hole; 3 elastic member; 4 rotating shaft; 5 buckle block; 05 another buckle block; 5a protrusion; 5b undercut arc protrusion; 6 electrode block; 61 welding head mounting hole; 61a inclined surface; 61b plane; 62 welding head limiting hole; 62a welding head limiting block; 62b screw / bolt; 7 welding head; 71 welding part; 71a buckle groove; 72 mounting part; 72a mounting part inclined surface; 72b mounting part plane. DETAILED DESCRIPTION

[0034] 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.

[0035] See also Figure 1-Figure 11 .

[0036] Embodiment 1: A resistance welding structure 1 comprises at least one driving device a, at least one base 2, at least one bracket, at least one elastic member 3, at least one rotating shaft 4, at least one buckle block 5, and at least one electrode block 6. The driving device a is connected to the base 2 and installed on the bracket. The driving device a is specifically an output shaft of a telescopic cylinder or a telescopic motor, which is slidably connected to the base 2. The electrode block 6 is installed below the base 2 through the bracket; the buckle block 5 is connected to one end of the elastic member 3 at one point and is movably installed on the bottom of the base 2 through the rotating shaft 4 at the other point. The other end of the elastic member 3 is elastically connected to the base 2 to set the buckle block 5 on the bottom 1 of the base 2; the electrode block 6 is provided with a welding head mounting through hole 61, and the inner side of the welding head mounting through hole 61 comprises at least one inclined surface 61a and at least one plane 61b, and an angle is formed between the two. The welding head mounting through hole 61 of the electrode block 6 is arranged below the buckle block 5 facing the buckle block 5. The base 2 has at least one buckle block mounting groove 21 and at least one elastic member mounting groove 22 at the bottom, the buckle block 5 is connected to one end of the elastic member 3 at one place, and the other end is rotatably penetrated in the buckle block mounting groove 21 through the rotating shaft 4, and the other end of the elastic member 3 is elastically mounted in the elastic member mounting groove 22; a resistance welding head 7, the welding head 7 includes a welding portion 81, a mounting portion 72, and the mounting portion 72 side is provided with a mounting portion inclined surface 72a and a mounting portion plane 72b that match the inclined surface 61a and the plane 61b provided on the inner side of the welding head mounting through hole 61, and the mounting portion inclined surface 72a and the mounting portion plane An angle is formed between the two surfaces 72b; a buckle groove 71a matching the L-shaped buckle block 5 is provided on the side of the welding portion 71; the buckle block 5 is an L-shaped structure, a protrusion 5a is provided at the bottom of the L-shaped buckle block, and a reverse hook arc protrusion 5b is provided on the side; the bottom of the L-shaped buckle block 5 is connected to one end of the elastic member 3, and the top is rotated through the rotating shaft 4 and penetrated into the buckle block installation groove 21, and the number of L-shaped buckle blocks 5 is at least one; specifically, the protrusion 5a in the buckle block 5 contacts the electrode block 6 to realize elastic opening and closing, and the reverse hook arc protrusion 5b in the buckle block 5 is buckled and locked with the buckle groove 71a of the welding head 7.

[0037] When welding is required, it is only necessary to insert the mounting portion 72 of the welding head 7 into the welding head mounting hole 61, and when the inclined surface 72a of the mounting portion of the welding head 7 and the plane 72b of the mounting portion correspond to the inclined surface 61a and the plane 61b of the welding head mounting hole 61 and are inserted into each other, the angle generated by the mutually matching inclined surfaces itself has the function of natural limiting clamping. During spot welding, there is an interaction force when the welding portion 71 of the welding head 7 contacts the product to be welded, thereby making it locked more firmly during welding; secondly, when the mounting portion 72 of the welding head 7 passes through the welding head mounting hole 61 to reach the bottom of the buckle block 5, the driving device a drives the base 2 to drive the buckle block 5 to move downward and contact the electrode block 6, and the buckle block 5 elastically opens to buckle the buckle groove 71a of the welding portion 71 of the welding head 7 to the buckle block 5, and then, the driving device a drives the base 2 to drive the buckle block 5 to move upward away from the electrode block 6, and the buckle block 5 elastically resets and buckles and locks the welding head 7 to prevent it from falling off downward, thereby realizing a double locking function. The installation and fixing method of the welding head 7 and the welding head base 2 adopted in the present technical solution is direct plug-in fixing. After the welding head 7 is used for many times, there will be no looseness and no position deviation, and the welding product yield is relatively high. Secondly, the direct plug-in method is more efficient in the process of disassembling and replacing the welding head, thereby improving the welding efficiency of the product.

[0038] Furthermore, the inner side of the welding head mounting through hole 61 may include at least two inclined surfaces 61 a , and the at least two inclined surfaces 61 a are in an "eight" shape to form an included angle, so that the mounting and locking effect is better.

[0039] Furthermore, when disassembling the welding head 7, the driving device a drives the base 2 to drive the buckle block 5 to move downward to contact the electrode block 6, and the elastic member 3 elastically opens the welding head 7 originally buckled on the buckle block 5, and the base pushes the welding part 71 of the welding head 7 out of the buckle block 5 to complete the disassembly.

[0040] Specifically, the driving device a is a telescopic cylinder or a telescopic motor, and the base 2 is slidably arranged on the output shaft of the telescopic cylinder or the telescopic motor.

[0041] Further, as shown in the figure, the electrode block 6 can be fixed under the base 2 through the bracket of the driving device a; it can also be separately arranged under the base 2 through the bracket.

[0042] A welding head limiting through hole 62 connected to the welding head mounting through hole 61 is opened on the side of the electrode block 6; the welding head limiting through hole 62 includes: a welding head limiting block 62a, an elastic member 3, and a screw / bolt 62b; one end of the elastic member 3 is connected to the welding head limiting block 62a and elastically protrudes it at the welding head mounting through hole 61 through the welding head limiting through hole 62, and the screw / bolt 62b is connected to the other end of the elastic member 3 to fix it at the welding head limiting through hole 62; the welding head limiting block 62a is a cylindrical limiting block with a diameter matching the welding head limiting hole 62, and the elastic member 3 is specifically a spring; when the welding head 7 is plugged into the welding head mounting hole 61, a welding head limiting through hole 62 is added to the inner side of the hole, and the cylindrical welding head limiting block 62a protruding from the welding head limiting through hole 62 has the function of elastic limiting, which achieves the function of multiple locking on the basis of the previous double locking, so the locking effect is better.

[0043] A welding head hole 23 is opened at the base 2 above the welding head mounting through hole 61, and the welding head hidden hole 23 faces the welding head mounting through hole 61; as shown in the figure, the welding head 7 of this scheme has the same structure at both ends and is a customized product processed and formed in a CNC workshop. When one end is in use, the other unused end is hidden in the welding head hole 23; when one end is worn out and needs to be replaced, it is only necessary to reverse the two ends and replace them, thereby maximizing the utilization rate of the welding head 7.

[0044] Furthermore, the top of the electrode block 6 is made of a flat high-hardness conductive metal material, such as tungsten steel, titanium alloy, etc.; a high-hardness conductive metal coating is provided on the top coating of the electrode block 6, and the protrusion 5a at the bottom of the L-shaped limit buckle block 5 only needs to contact the high-hardness conductive metal coating to realize the opening and closing of the welding head 7, without directly contacting the electrode block 6, thereby reducing friction and extending the service life of the electrode block 6.

[0045] Furthermore, the welding head 7 is an upper electrode, and its material is a conductive metal.

[0046] Embodiment 2: A resistance welding structure 1 comprises at least one driving device a, at least one base 2, at least one bracket, at least one elastic member 3, at least one rotating shaft 4, at least one buckle block 5, and at least one electrode block 6. The driving device a is connected to the base 2 and installed on the bracket. The driving device a is specifically an output shaft of a telescopic cylinder or a telescopic motor, which is slidably connected to the base 2. The electrode block 6 is installed below the base 2 through the bracket; the buckle block 5 is connected to one end of the elastic member 3 at one point and is movably installed on the bottom of the base 2 through the rotating shaft 4 at the other point. The other end of the elastic member 3 is elastically connected to the base 2 to set the buckle block 5 on the bottom 1 of the base 2; the electrode block 6 is provided with a welding head mounting through hole 61, and the inner side of the welding head mounting through hole 61 comprises at least one inclined surface 61a and at least one plane 61b, and an angle is formed between the two. The welding head mounting through hole 61 of the electrode block 6 is arranged below the buckle block 5 facing the buckle block 5. The base 2 has at least one buckle block mounting groove 21 and at least one elastic member mounting groove 22 at the bottom, the buckle block 5 is connected to one end of the elastic member 3 at one place, and the other end is rotatably penetrated in the buckle block mounting groove 21 through the rotating shaft 4, and the other end of the elastic member 3 is elastically mounted in the elastic member mounting groove 22; a resistance welding head 7, the welding head 7 includes a welding portion 81, a mounting portion 72, and the mounting portion 72 side is provided with a mounting portion inclined surface 72a and a mounting portion plane 72b that match the inclined surface 61a and the plane 61b provided on the inner side of the welding head mounting through hole 61, and the mounting portion inclined surface 72a and the mounting portion plane An angle is formed between the two surfaces 72b; a buckle groove 71a matching the L-shaped buckle block 5 is provided on the side of the welding portion 71; the buckle block 5 is an L-shaped structure, a protrusion 5a is provided at the bottom of the L-shaped buckle block, and a reverse hook arc protrusion 5b is provided on the side; the bottom of the L-shaped buckle block 5 is connected to one end of the elastic member 3, and the top is rotated through the rotating shaft 4 and penetrated into the buckle block installation groove 21, and the number of L-shaped buckle blocks 5 is at least one; specifically, the protrusion 5a in the buckle block 5 contacts the electrode block 6 to realize elastic opening and closing, and the reverse hook arc protrusion 5b in the buckle block 5 is buckled and locked with the buckle groove 71a of the welding head 7.

[0047] When welding is required, it is only necessary to insert the mounting portion 72 of the welding head 7 into the welding head mounting hole 61, and when the inclined surface 72a of the mounting portion of the welding head 7 and the plane 72b of the mounting portion correspond to the inclined surface 61a and the plane 61b of the welding head mounting hole 61 and are inserted into each other, the angle generated by the mutually matching inclined surfaces itself has the function of natural limiting clamping. During spot welding, there is an interaction force when the welding portion 71 of the welding head 7 contacts the product to be welded, thereby making it locked more firmly during welding; secondly, when the mounting portion 72 of the welding head 7 passes through the welding head mounting hole 61 to reach the bottom of the buckle block 5, the driving device a drives the base 2 to drive the buckle block 5 to move downward and contact the electrode block 6, and the buckle block 5 elastically opens to buckle the buckle groove 71a of the welding portion 71 of the welding head 7 to the buckle block 5, and then, the driving device a drives the base 2 to drive the buckle block 5 to move upward away from the electrode block 6, and the buckle block 5 elastically resets and buckles and locks the welding head 7 to prevent it from falling off downward, thereby realizing a double locking function. The installation and fixing method of the welding head 7 and the welding head base 2 adopted in the present technical solution is direct plug-in fixing. After the welding head 7 is used for many times, there will be no looseness and no position deviation, and the welding product yield is relatively high. Secondly, the direct plug-in method is more efficient in the process of disassembling and replacing the welding head, thereby improving the welding efficiency of the product.

[0048] Furthermore, the inner side of the welding head mounting through hole 61 may include at least two inclined surfaces 61 a , and the at least two inclined surfaces 61 a are in an "eight" shape to form an included angle, so that the mounting and locking effect is better.

[0049] Furthermore, when disassembling the welding head 7, the driving device a drives the base 2 to drive the buckle block 5 to move downward to contact the electrode block 6, and the elastic member 3 elastically opens the welding head 7 originally buckled on the buckle block 5, and the base pushes the welding part 71 of the welding head 7 out of the buckle block 5 to complete the disassembly.

[0050] Specifically, the driving device a is a telescopic cylinder or a telescopic motor, and the base 2 is slidably arranged on the output shaft of the telescopic cylinder or the telescopic motor.

[0051] Further, as shown in the figure, the electrode block 6 can be fixed under the base 2 through the bracket of the driving device a; it can also be separately arranged under the base 2 through the bracket.

[0052] A welding head limiting through hole 62 which is connected to the welding head mounting through hole 61 is opened on the side of the electrode block 6; the welding head limiting through hole 62 also includes a welding head limiting block 62a and a driving device b; one end of the welding head limiting block 62a is connected to the driving device b, and the other end is recessed in the welding head limiting through hole 62, and the driving device b can drive the welding head limiting block 62a to telescope and limit between the welding head mounting through hole 61 and the welding head limiting through hole 62; the driving device b is specifically a telescopic cylinder or a telescopic motor, and the welding head limiting block 62a is slidably connected to the output shaft of the driving device b. When the welding head 7 is inserted into the welding head mounting hole 61, a welding head limiting through hole 62 is added on the inner side of the hole, and the welding head limiting block 62a recessed in the welding head limiting through hole 62 has the telescopic limiting function of the driving device b, and achieves the function of multiple locking on the basis of the previous double locking, so the locking effect is better; compared with the elastic limiting structure of the elastic part 3 adopted in Example 1, the telescopic limiting effect of the driving device b adopted in this embodiment is more solid.

[0053] A welding head hole 23 is opened at the base 2 above the welding head mounting through hole 61, and the welding head hidden hole 23 faces the welding head mounting through hole 61; as shown in the figure, the welding head 7 of this scheme has the same structure at both ends and is a customized product processed and formed in a CNC workshop. When one end is in use, the other unused end is hidden in the welding head hole 23; when one end is worn out and needs to be replaced, it is only necessary to reverse the two ends and replace them, thereby maximizing the utilization rate of the welding head 7.

[0054] Furthermore, the top of the electrode block 6 is made of a flat high-hardness conductive metal material, such as tungsten steel, titanium alloy, etc.; a high-hardness conductive metal coating is provided on the top coating of the electrode block 6, and the protrusion 5a at the bottom of the L-shaped limit buckle block 5 only needs to contact the high-hardness conductive metal coating to realize the opening and closing of the welding head 7, without directly contacting the electrode block 6, thereby reducing friction and extending the service life of the electrode block 6.

[0055] Furthermore, the welding head 7 is an upper electrode, and its material is a conductive metal.

[0056] Embodiment 3:

[0057] A resistance welding structure 1 includes at least one driving device a, at least one base 2, at least one bracket, at least one elastic member 3, at least one rotating shaft 4, at least one buckle block 5, and at least one electrode block 6. The driving device a is connected to the base 2 and installed on the bracket. The driving device a is specifically an output shaft of a telescopic cylinder or a telescopic motor that is slidably connected to the base 2. The electrode block 6 is installed below the base 2 through the bracket; the buckle block 5 is connected to one end of the elastic member 3 at one point and is movably installed at the bottom of the base 2 through the rotating shaft 4 at the other point. The other end of the elastic member 3 is elastically connected to the base 2 to set the buckle block 5 at the bottom of the base 2, and another buckle block 05 matching it is also arranged at intervals at the base 2 on the buckle block 5 side; the electrode block 6 is provided with a welding head mounting through hole 61, and the inner side of the welding head mounting through hole 61 includes at least one inclined surface 61a and at least one plane 61b, and an angle is formed between the two. The welding head mounting through hole 61 of the electrode block 6 is arranged below the welding head elastic mounting buckle position 1. The bottom of the base 2 is provided with at least one buckle block mounting groove 21 and at least one elastic member mounting groove 22, the buckle block 5 is connected to one end of the elastic member 3 at one point, and is rotatably penetrated in the buckle block mounting groove 21 through the rotating shaft 4 at another point, and the other end of the elastic member 3 is elastically mounted in the elastic member mounting groove 22; another buckle block 05 also includes an elastic member 3 and a rotating shaft 4, the other buckle block 05 is connected to one end of the elastic member 3 at one point, and is rotatably penetrated in the buckle block mounting groove 21 through the rotating shaft 4 at another point, and the other end of the elastic member 3 is elastically connected to the elastic member mounting groove 22 to arrange the other buckle block 05 symmetrically with the buckle block 5 at the bottom of the base 1; a resistance welding head 7, the welding head 7 includes a welding portion 81 and a mounting portion 72, and the mounting portion 72 side is provided with a mounting portion inclined surface 72a and a mounting portion plane that match the inclined surface 61a and the plane 61b provided on the inner side of the welding head mounting through hole 61 72b, an angle is formed between the inclined surface 72a of the mounting portion and the plane 72b of the mounting portion; both sides of the welding portion 71 are concavely provided with snap-fit ​​grooves 71a matching the L-shaped snap block 5 and the other L-shaped snap block 05; the snap block 5 and the other L-shaped snap block 05 are both L-shaped structures, and the bottoms of the L-shaped snap block and the other L-shaped snap block 05 are both provided with protrusions 5a, and the sides are both provided with inverted arc protrusions 5b; the bottoms of the L-shaped snap block 5 and the other L-shaped snap block 05 are connected to one end of the elastic member 3, and the tops are rotatably passed through the buckle block mounting groove 21 through the rotating shaft 4, and the number of the L-shaped snap block 5 and the other L-shaped snap block 05 is at least one; specifically, the protrusions 5a in the snap block 5 and the other snap block 05 contact the electrode block 6 to realize bilateral elastic opening and closing, and the inverted arc protrusions 5b in the snap block 5 and the other buckle block 05 are mutually snapped and locked with the snap-fit ​​grooves 71a of the welding head 7.

[0058] When welding is required, it is only necessary to insert the mounting portion 72 of the welding head 7 into the welding head mounting hole 61, and when the inclined surface 72a of the mounting portion of the welding head 7 and the mounting portion plane 72b correspond to the inclined surface 61a and the plane 61b of the welding head mounting hole 61 and are inserted into each other, the angle generated by the mutually matching inclined surfaces itself has a natural limit clamping function. When spot welding, the welding portion 71 of the welding head 7 contacts the product to be welded, and there is an interaction force, so that the welding head 7 is locked more firmly during welding; secondly, the mounting portion 72 of the welding head 7 is connected to the welding head mounting hole 61 through the welding head mounting hole 61. When the hole 61 reaches the welding head elastic mounting buckle position 1, the driving device a drives the base 2 to drive the buckle block 5 and another buckle block 05 to move downward to contact the electrode block 6, and then the buckle block 5 and another buckle block 05 are elastically opened respectively, and the buckle groove 71a of the welding part 71 of the welding head 7 is buckled to the buckle block 5 and another buckle block 05. Then, the driving device a drives the base 2 to drive the buckle block 5 and another buckle block 05 to move upward away from the electrode block 6, and then the buckle block 5 and another buckle block 05 are elastically reset and merged to buckle and lock the welding head 7, thereby realizing multiple locking functions. The installation and fixing method of the welding head 7 and the welding head base 2 adopted in the present technical solution is direct plug-in fixing. After multiple uses, the welding head 7 will not be loose, and there will be no position deviation, and the welding product yield is high; secondly, the direct plug-in method is more efficient in the process of disassembling and replacing the welding head, thereby improving the welding efficiency of the product.

[0059] Furthermore, the inner side of the welding head mounting through hole 61 may include at least two inclined surfaces 61 a , and the at least two inclined surfaces 61 a are in an "eight" shape to form an included angle, so that the mounting and locking effect is better.

[0060] Furthermore, when disassembling the welding head 7, the driving device a drives the base 2 to drive the buckle block 5 and the other buckle block 05 to move downward to contact the electrode block 6, and the elastic member 3 elastically opens the welding head 7 originally buckled on the buckle block 5 and the other buckle block 05, and the base pushes the welding part 71 of the welding head 7 out of the buckle block 5 and the other buckle block 05 to complete the disassembly.

[0061] Specifically, the driving device a is a telescopic cylinder or a telescopic motor, and the base 2 is slidably arranged on the output shaft of the telescopic cylinder or the telescopic motor.

[0062] Furthermore, the electrode block 6 can be fixed under the base 2 through a bracket of the driving device a; it can also be separately arranged under the base 2 through a bracket.

[0063] A welding head limiting through hole 62 which is connected to the welding head mounting through hole 61 is opened on the side of the electrode block 6; the welding head limiting through hole 62 also includes a welding head limiting block 62a and a driving device b; one end of the welding head limiting block 62a is connected to the driving device b, and the other end is recessed in the welding head limiting through hole 62, and the driving device b can drive the welding head limiting block 62a to telescope and limit between the welding head mounting through hole 61 and the welding head limiting through hole 62; the driving device b is specifically a telescopic cylinder or a telescopic motor, and the welding head limiting block 62a is slidably connected to the output shaft of the driving device b. When the welding head 7 is inserted into the welding head mounting hole 61, a welding head limiting through hole 62 is added on the inner side of the hole, and the welding head limiting block 62a recessed in the welding head limiting through hole 62 has the telescopic limiting function of the driving device b, and achieves the function of multiple locking on the basis of the previous double locking, so the locking effect is better; compared with the elastic limiting structure of the elastic part 3 adopted in Example 1, the telescopic limiting effect of the driving device b adopted in this embodiment is more solid.

[0064] A welding head hole 23 is opened at the base 2 above the welding head elastic mounting buckle 1, and the welding head hole 23 faces the welding head elastic mounting buckle 1; as shown in the figure, the welding head 7 of this scheme has the same structure at both ends and is a customized product processed and formed in a CNC workshop. When one end is in use, the other unused end is hidden in the welding head hole 23; when one end is worn out and needs to be replaced, only the two ends need to be reversed and replaced, thereby maximizing the utilization rate of the welding head 7.

[0065] Furthermore, the top of the electrode block 6 is made of a flat high-hardness conductive metal material, such as tungsten steel, titanium alloy, etc.; a high-hardness conductive metal coating is provided on the top coating of the electrode block 6, and the protrusion 5a at the bottom of the L-shaped limit buckle block 5 only needs to contact the high-hardness conductive metal coating to realize the opening and closing of the welding head 7, without directly contacting the electrode block 6, thereby reducing friction and extending the service life of the electrode block 6.

[0066] Furthermore, the welding head 7 is an upper electrode, and its material is a conductive metal.

[0067] Embodiment 4: A resistance welding structure 1 comprises at least one driving device a, at least one base 2, at least one bracket, at least one elastic member 3, at least one rotating shaft 4, at least one buckle block 5, and at least one electrode block 6. The driving device a is connected to the base 2 and installed on the bracket. The driving device a is specifically an output shaft of a telescopic cylinder or a telescopic motor, which is slidably connected to the base 2. The electrode block 6 is installed below the base 2 through the bracket; the buckle block 5 is connected to one end of the elastic member 3 at one point, and is movably installed on the bottom of the base 2 through the rotating shaft 4 at the other point. The other end of the elastic member 3 is elastically connected to the base 2 to set the buckle block 5 at the bottom of the base 2, and another buckle block 05 matching it is also arranged at intervals at the base 2 on the buckle block 5 side; the electrode block 6 is provided with a welding head mounting through hole 61, and the inner side of the welding head mounting through hole 61 includes at least one inclined surface 61a and at least one plane 61b, and an angle is formed between the two. The welding head mounting through hole 61 of the electrode block 6 is arranged below the welding head elastic mounting buckle position 1. The bottom of the base 2 is provided with at least one buckle block mounting groove 21 and at least one elastic member mounting groove 22, the buckle block 5 is connected to one end of the elastic member 3 at one point, and is rotatably penetrated in the buckle block mounting groove 21 through the rotating shaft 4 at another point, and the other end of the elastic member 3 is elastically mounted in the elastic member mounting groove 22; another buckle block 05 also includes an elastic member 3 and a rotating shaft 4, the other buckle block 05 is connected to one end of the elastic member 3 at one point, and is rotatably penetrated in the buckle block mounting groove 21 through the rotating shaft 4 at another point, and the other end of the elastic member 3 is elastically connected to the elastic member mounting groove 22 to arrange the other buckle block 05 symmetrically with the buckle block 5 at the bottom of the base 1; a resistance welding head 7, the welding head 7 includes a welding portion 81 and a mounting portion 72, and the mounting portion 72 side is provided with a mounting portion inclined surface 72a and a mounting portion plane that match the inclined surface 61a and the plane 61b provided on the inner side of the welding head mounting through hole 61 72b, an angle is formed between the inclined surface 72a of the mounting portion and the plane 72b of the mounting portion; both sides of the welding portion 71 are concavely provided with snap-fit ​​grooves 71a matching the L-shaped snap block 5 and the other L-shaped snap block 05; the snap block 5 and the other L-shaped snap block 05 are both L-shaped structures, and the bottoms of the L-shaped snap block and the other L-shaped snap block 05 are both provided with protrusions 5a, and the sides are both provided with inverted arc protrusions 5b; the bottoms of the L-shaped snap block 5 and the other L-shaped snap block 05 are connected to one end of the elastic member 3, and the tops are rotatably passed through the buckle block mounting groove 21 through the rotating shaft 4, and the number of the L-shaped snap block 5 and the other L-shaped snap block 05 is at least one; specifically, the protrusions 5a in the snap block 5 and the other snap block 05 contact the electrode block 6 to realize bilateral elastic opening and closing, and the inverted arc protrusions 5b in the snap block 5 and the other buckle block 05 are mutually snapped and locked with the snap-fit ​​grooves 71a of the welding head 7.

[0068] When welding is required, it is only necessary to insert the mounting portion 72 of the welding head 7 into the welding head mounting hole 61, and when the inclined surface 72a of the mounting portion of the welding head 7 and the mounting portion plane 72b correspond to the inclined surface 61a and the plane 61b of the welding head mounting hole 61 and are inserted into each other, the angle generated by the mutually matching inclined surfaces itself has a natural limit clamping function. When spot welding, the welding portion 71 of the welding head 7 contacts the product to be welded, and there is an interaction force, so that the welding head 7 is locked more firmly during welding; secondly, the mounting portion 72 of the welding head 7 is connected to the welding head mounting hole 61 through the welding head mounting hole 61. When the hole 61 reaches the welding head elastic mounting buckle position 1, the driving device a drives the base 2 to drive the buckle block 5 and another buckle block 05 to move downward to contact the electrode block 6, and then the buckle block 5 and another buckle block 05 are elastically opened respectively, and the buckle groove 71a of the welding part 71 of the welding head 7 is buckled to the buckle block 5 and another buckle block 05. Then, the driving device a drives the base 2 to drive the buckle block 5 and another buckle block 05 to move upward away from the electrode block 6, and then the buckle block 5 and another buckle block 05 are elastically reset and merged to buckle and lock the welding head 7, thereby realizing multiple locking functions. The installation and fixing method of the welding head 7 and the welding head base 2 adopted in the present technical solution is direct plug-in fixing. After multiple uses, the welding head 7 will not be loose, and there will be no position deviation, and the welding product yield is high; secondly, the direct plug-in method is more efficient in the process of disassembling and replacing the welding head, thereby improving the welding efficiency of the product.

[0069] Furthermore, the inner side of the welding head mounting through hole 61 may include at least two inclined surfaces 61 a , and the at least two inclined surfaces 61 a are in an "eight" shape to form an included angle, so that the mounting and locking effect is better.

[0070] Furthermore, when disassembling the welding head 7, the driving device a drives the base 2 to drive the buckle block 5 and the other buckle block 05 to move downward to contact the electrode block 6, and the elastic member 3 elastically opens the welding head 7 originally buckled on the buckle block 5 and the other buckle block 05, and the base pushes the welding part 71 of the welding head 7 out of the buckle block 5 and the other buckle block 05 to complete the disassembly.

[0071] Specifically, the driving device a is a telescopic cylinder or a telescopic motor, and the base 2 is slidably arranged on the output shaft of the telescopic cylinder or the telescopic motor.

[0072] Furthermore, the electrode block 6 can be fixed under the base 2 through a bracket of the driving device a; it can also be separately arranged under the base 2 through a bracket.

[0073] A welding head limiting through hole 62 connected to the welding head mounting through hole 61 is opened on the side of the electrode block 6; the welding head limiting through hole 62 includes: a welding head limiting block 62a, an elastic member 3, and a screw / bolt 62b; one end of the elastic member 3 is connected to the welding head limiting block 62a and elastically protrudes it at the welding head mounting through hole 61 through the welding head limiting through hole 62, and the screw / bolt 62b is connected to the other end of the elastic member 3 to fix it at the welding head limiting through hole 62; the welding head limiting block 62a is a cylindrical limiting block with a diameter matching the welding head limiting hole 62, and the elastic member 3 is specifically a spring; when the welding head 7 is plugged into the welding head mounting hole 61, a welding head limiting through hole 62 is added to the inner side of the hole, and the cylindrical welding head limiting block 62a protruding from the welding head limiting through hole 62 has the function of elastic limiting, which achieves the function of multiple locking on the basis of the previous double locking, so the locking effect is better.

[0074] A welding head hole 23 is opened at the base 2 above the welding head elastic mounting buckle 1, and the welding head hole 23 faces the welding head elastic mounting buckle 1; as shown in the figure, the welding head 7 of this scheme has the same structure at both ends and is a customized product processed and formed in a CNC workshop. When one end is in use, the other unused end is hidden in the welding head hole 23; when one end is worn out and needs to be replaced, only the two ends need to be reversed and replaced, thereby maximizing the utilization rate of the welding head 7.

[0075] Furthermore, the top of the electrode block 6 is made of a flat high-hardness conductive metal material, such as tungsten steel, titanium alloy, etc.; a high-hardness conductive metal coating is provided on the top coating of the electrode block 6, and the protrusion 5a at the bottom of the L-shaped limit buckle block 5 only needs to contact the high-hardness conductive metal coating to realize the opening and closing of the welding head 7, without directly contacting the electrode block 6, thereby reducing friction and extending the service life of the electrode block 6.

[0076] Furthermore, the welding head 7 is an upper electrode, and its material is a conductive metal.

[0077] Fig.10 and Fig.11 This is a three-dimensional structural diagram of the entire machine of the utility model.

[0078] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A resistance welding structure, characterized in that: It comprises at least one driving device, at least one base, at least one bracket, at least one elastic member, at least one rotating shaft, at least one buckle block, and at least one electrode block, wherein the driving device is connected to the base and installed on the bracket, and the electrode block is installed under the base through the bracket; The buckle block is connected to one end of the elastic member at one end, and is movably mounted on the bottom of the base through the rotating shaft at the other end. The other end of the elastic member is elastically connected to the base to set the buckle block on the bottom of the base. The electrode block is provided with a welding head mounting through hole, which is arranged in an angle shape. The welding head mounting through hole of the electrode block is arranged below the buckle block facing the buckle block.

2. A resistance welding structure according to claim 1, characterized in that: The bottom of the base is provided with at least one buckle block mounting groove and at least one elastic member mounting groove, one end of the buckle block is connected to one end of the elastic member, and the other end is rotatably arranged in the buckle block mounting groove through the rotating shaft, and the other end of the elastic member is elastically connected to the elastic member mounting groove to set the buckle block at the bottom of the base.

3. A resistance welding structure according to claim 2, characterized in that: Another buckle block matching with the buckle block is arranged at intervals on the base on the buckle block side.

4. A resistance welding structure according to claim 3, characterized in that: The other buckle block also includes the elastic member and the rotating shaft. One end of the other buckle block is connected to one end of the elastic member, and the other end is rotatably connected to the rotating shaft and is inserted into the buckle block mounting groove. The other end of the elastic member is elastically connected to the elastic member mounting groove to set the other buckle block at the bottom of the base.

5. A resistance welding structure according to claim 1, characterized in that: A welding head limiting through hole connected to the welding head mounting through hole is opened on the side of the electrode block; the welding head limiting through hole also includes a welding head limiting block and the driving device; one end of the welding head limiting block is connected to the driving device, and the other end is recessed in the welding head limiting through hole, and the driving device can drive the welding head limiting block to extend and limit between the welding head mounting through hole and the welding head limiting through hole.

6. A resistance welding structure according to claim 1, characterized in that: A welding head limiting through hole connected to the welding head mounting through hole is opened on the side of the electrode block; the welding head limiting through hole also includes a welding head limiting protrusion, the elastic member, and a screw / bolt; one end of the elastic member is connected to the welding head limiting protrusion and elastically protrudes through the welding head limiting through hole to the welding head mounting through hole, and the screw / bolt is threadedly connected to the other end of the elastic member to fix it at the welding head limiting through hole.

7. A resistance welding structure according to claim 4, characterized in that: The buckle block and the other buckle block are both L-shaped structures, and the bottom of the L-shaped buckle block and the other L-shaped buckle block are both provided with protrusions, and the sides are both provided with inverted hook arc protrusions; the bottom of the L-shaped buckle block and the other L-shaped buckle block are connected to one end of the elastic member, and the top is rotatably passed through the rotating shaft to be inserted into the buckle block installation groove.

8. A resistance welding structure according to claim 1, characterized in that: The elastic member is composed of one of a spring, a spring sheet and a tension spring.

9. A resistance welding structure according to claim 1, characterized in that: A welding head hiding hole is formed at the base above the welding head mounting through hole, and the welding head hiding hole faces the welding head mounting through hole.

10. A resistance welding head, used for a resistance welding structure according to any one of claims 1 to 9, characterized in that: It comprises a welding head, which comprises a welding part and a mounting part, wherein the mounting part forms an angle matching with the welding head mounting through hole; and the welding part side is provided with at least one buckling groove matching with the L-shaped buckle block and the other L-shaped buckle block.

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