Spot welding tool

Abstract

The utility model discloses a spot welding tool. The spot welding tool comprises a welding fixing block for placing a pin body, a coil positioning piece is arranged on one of two opposite sides of the welding fixing block, the other side of the welding fixing block is connected with the welding clamping block through a guide rod, a first spring is arranged on the portion, located on one side of the coil positioning piece, of the guide rod in a sleeving mode, and a limiting space for a pin body to be placed in and clamped is reserved between the welding clamping block and the welding fixing block. According to the utility model, the welding efficiency is improved, the welding consistency of the pin and the coil is ensured, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coil processing, in particular to a spot welding tool. Background Art

[0002] Magnetic core coil is a kind of coil made by inserting a magnetic core of a certain shape into an air-core coil. Magnetic core coil can be made into inductors or transformers, which are widely used in instruments, communication equipment and household appliances.

[0003] During the production process of the coil, the pins need to be spot welded to the copper wire on the coil frame. Currently, the coil is positioned manually by hand and then welded by a spot welder. The manual positioning is inefficient, the positioning is inaccurate, the processing consistency is poor, and the processed products are scrapped.

[0004] Therefore, it is necessary to provide a spot welding tool to solve the above problems. Utility Model Content

[0005] In order to overcome the above shortcomings, the purpose of the utility model is to provide a spot welding tool to improve welding efficiency, ensure the consistency of pin needle and coil welding, and reduce the labor intensity of workers.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: a spot welding tool, including a welding fixing block for placing a pin needle body; one of the two opposite sides of the welding fixing block is provided with a coil positioning piece, and the other side is connected to the welding clamping block through a guide rod, and a spring is sleeved on the part of the guide rod located on one side of the coil positioning piece, and a limited space is reserved between the welding clamping block and the welding fixing block for the pin needle body to be placed and clamped.

[0007] The tooling positions the pin needle body and coil to be welded, ensuring that the position between the two will not shift during the subsequent welding process of the spot welding machine, thereby ensuring the consistency of the position between the welding end of the lead on the coil and the welding point on the pin needle body, that is, the consistency of the lead length and the welding point on the pin needle, so that no welding position error occurs during spot welding, effectively improving the welding efficiency of the pin needle body and the coil.

[0008] Furthermore, it also includes a base, and the welding fixed block is slidably connected to the base through a displacement sliding assembly, and the displacement sliding assembly includes a displacement sliding block arranged below the welding fixed block and a fixed sliding rail arranged on the base and matched therewith. By moving the position of the welding fixed block, the position of the two pin needle bodies relative to the spot welding machine is adjusted to ensure that the two pin needle bodies and the coil leads located thereon can be welded, thereby ensuring the welding efficiency of the pin needles and the coil leads.

[0009] Furthermore, a limit screw is provided on both sides of the base in the length direction, and the straight line where the limit screw is located in the length direction is parallel to the straight line where the base is located in the length direction. By providing two limit screws, the moving distance of the welding fixing block in the horizontal direction is limited.

[0010] Furthermore, the guide rod is arranged horizontally, and one end thereof passes through the welding fixing block and is connected to the welding clamping block, and the other end is provided with a limit piece, and the spring is set on the guide rod at the part between the limit piece and the welding fixing block bracket.

[0011] Furthermore, a pin positioning block is provided on the welding fixing block at one side close to the welding clamping block, and the pin positioning block includes a pin placement portion and a lead guide portion arranged in a stepped shape, and two lead positioning grooves are provided on the lead guide portion.

[0012] The lead positioning groove limits the positions of the two lead wires to be welded from the coil. The two lead wires to be welded are manually straightened and placed in the lead positioning groove, thereby ensuring that one end of the lead wire on the coil for welding is located on the upper surface of the pin needle body, thereby ensuring the consistency of the welding between the pin needle and the coil.

[0013] Furthermore, the pin needle body includes a first end and a second end, and the surface of the welding clamping block is provided with two clearance grooves corresponding to the positions of the lead wire positioning grooves, the first end is located in the clearance groove, and the second end is located in the pin needle placement part, and when the welding clamping block moves toward the welding fixing block, the second end can be clamped between the welding clamping block and the lead wire guide part. The width of the clearance groove is smaller than the width of the second end on the pin needle body, so that the second end on the pin needle body can be clamped between the welding clamping block and the lead wire guide part to ensure the positioning of the pin needle body.

[0014] Furthermore, a coil placement groove is provided on the surface of the coil positioning member, and a coil clamping assembly is provided on the welding fixing block on the same side as the coil positioning member. The coil placement groove is used to preliminarily position the coil to be processed, and the coil clamping assembly can ensure that the coil will not move during the subsequent welding process, that is, it will not affect the subsequent welding effect.

[0015] Furthermore, the coil clamping assembly includes a positioning seat, a threaded rod is horizontally provided on the positioning seat, a clamping plate is provided on one side of the threaded rod close to the coil positioning piece, a hand wheel is threadedly connected to the other end, and a second spring is sleeved on the portion of the threaded rod between the clamping plate and the positioning seat. When the hand wheel is turned in a direction away from the coil positioning piece, the external force applied to the second spring is reduced, and the second spring pushes the clamping plate to move in a direction close to the coil positioning piece under the action of its own elastic force, so as to clamp the coil between the clamping plate and the welding fixture.

[0016] Furthermore, the base is connected to the spot welding bottom plate through a spot welding slide rail, and the straight line in the length direction of the spot welding slide rail is perpendicular to the straight line in the length direction of the fixed slide rail. By sliding the base on the spot welding bottom plate, it is convenient to move the base toward or away from the spot welding machine.

[0017] Beneficial effects of the utility model:

[0018] In the utility model, the welding fixing block, the welding clamping block, the pin needle body, the guide rod, the spring and the coil positioning piece cooperate with each other to position the pin needle body and the coil to be welded, thereby improving the welding efficiency, ensuring the consistency of the length of the welding point on the pin needle and the lead wire on the coil, and reducing the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an isometric view of the overall structure of an embodiment of the utility model;

[0020] Figure 2 It is a top view of the overall structure from another perspective of an embodiment of the utility model;

[0021] Figure 3 It is a partial structural isometric view of an embodiment of the utility model;

[0022] Figure 4 It is a partial structural cross-sectional schematic diagram of an embodiment of the utility model;

[0023] In the figure: 1. spot welding base plate; 2. spot welding slide rail; 3. base; 4. welding fixed block; 5. displacement sliding assembly; 51. displacement slider; 52. fixed slide rail; 6. welding clamping block; 7. guide rod; 8. spring one; 9. limit piece; 10. clearance groove; 11. pin needle positioning block; 111. pin needle placement part; 113. lead positioning groove; 114. lead guide part; 12. coil positioning piece; 13. coil placement groove; 14. coil clamping assembly; 141. positioning seat; 142. hand wheel; 143. clamping plate; 144. threaded rod; 145. spring two; 15. pin needle body; 151. first end; 152. second end; 16. limit screw. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0025] See attached Figures 1 to 4 As shown, a spot welding tool in this embodiment includes a welding fixing block 4 on which a pin needle body 15 is placed; one side of the two opposite sides of the welding fixing block 4 is provided with a coil positioning piece 12, and the other side is connected to the welding clamping block 6 through a guide rod 7, and a spring 8 is sleeved on the part of the guide rod 7 located on one side of the coil positioning piece 12, and a limited space for the pin needle body 15 to be placed and clamped is reserved between the welding clamping block 6 and the welding fixing block 4. The coil positioning piece 12 is used to position the coil to be welded, and the welding fixing block 4 can preliminarily limit the position where the pin needle body 15 is placed. When the guide rod 7 is pushed to move, the guide rod 7 can drive the welding clamping block 6 to move in a direction away from the welding fixing block 4, and at this time, the pin needle body 15 can be easily placed in the limited space reserved between the welding clamping block 6 and the welding fixing block 4, and when the guide rod 7 is released, the spring 8 can drive the welding clamping block 6 to reset under its elastic action, that is, move in a direction close to the welding fixing block 4, and then clamp the pin needle body 15 in the above-mentioned limited space.

[0026] The tooling positions the pin needle body 15 and the coil to be welded, ensuring that the position between the two will not be offset during the subsequent welding process of the spot welding machine, thereby ensuring the consistency of the position between the welding end of the lead on the coil and the welding point on the pin needle body 15, that is, the consistency of the lead length and the welding point on the pin needle, so that no welding position error will occur during spot welding, effectively improving the welding efficiency of the pin needle body 15 and the coil.

[0027] The welding fixing block 4 is also included in the base 3, and the welding fixing block 4 is slidably connected to the base 3 through a displacement sliding assembly 5, and the displacement sliding assembly 5 includes a displacement slider 51 arranged below the welding fixing block 4 and a fixed slide rail 52 arranged on the base 3 and matched therewith. By moving the position of the welding fixing block 4, the positions of the two pin needle bodies 15 relative to the spot welding machine are adjusted to ensure that the two pin needle bodies 15 and the coil leads thereon can be welded, thereby ensuring the welding efficiency of the pin needles and the coil leads.

[0028] In some embodiments, the base 3 is U-shaped, the welding fixing block 4 is located in the U-shaped groove, and the displacement slider 51 is arranged along the length direction of the base 3, that is, the welding fixing block 4 can move back and forth toward the two U-shaped vertical sides of the U-shaped groove to adjust the relative position of the pin needle body 15 and the spot welding machine thereon, so that both pin needle bodies 15 can be welded with coil leads.

[0029] It should be noted that the setting direction of the fixed slide rail 52 is not limited, as long as the two pins and the coil welding ends thereon can be welded in sequence by the spot welding machine.

[0030] A limit screw 16 is provided on both sides of the length direction of the base 3, and the straight line where the limit screw 16 is located in the length direction is parallel to the straight line where the length direction of the base 3 is located. By providing two limit screws 16, the moving distance of the welding fixing block 4 in the horizontal direction is limited.

[0031] See attached Figure 1 In some embodiments, the moving distance of the welding fixing block 4 when it moves to the left or right is limited by the limit screw 16. When the welding fixing block 4 moves to the left or right until its side contacts the limit screw 16, the point on the pin needle body 15 that needs to be welded is just below the welding gun of the spot welding machine, which effectively ensures the welding efficiency of the pin needle body 15 and the consistency of the welding point and the welding gun position on the spot welding machine.

[0032] The guide rod 7 is arranged horizontally, and one end thereof penetrates the welding fixing block 4 and is connected to the welding clamping block 6, and the other end is provided with a limiter 9, and the spring 18 is sleeved on the guide rod 7 at the part located between the limiter 9 and the bracket of the welding fixing block 4. The limiter 9 is arranged to limit the moving distance of the welding clamping block 6 relative to the welding fixing block 4 in the horizontal direction, and the guide rod 7 is pushed toward the direction close to the welding fixing block 4, and the guide rod 7 can drive the welding clamping block 6 to move toward the direction away from the welding fixing block 4. By setting the spring 18, when the staff no longer applies external force to the guide rod 7, the spring 18 is no longer in a compressed state, and under its own elastic action, it can drive the guide rod 7 to reset, that is, the welding clamping block 6 automatically moves toward the direction close to the welding fixing block 4, so as to clamp the pin needle body 15 between the welding clamping block 6 and the welding fixing block 4, so as to realize the automatic clamping and positioning of the pin needle body 15, and effectively prevent the pin needle from moving in the working process to affect the subsequent welding.

[0033] In some embodiments, the limit member 9 and the coil positioning member 12 are arranged on the same side, the welding clamping block 6 is arranged on the other side opposite to the coil positioning member 12, and the guide rods 7 are provided in two groups and are respectively located on both sides of the length direction of the coil positioning member 12 to ensure stability when pushing the welding clamping block 6 to move toward the welding fixing block 4.

[0034] A pin positioning block 11 is provided on the welding fixing block 4 at one side close to the welding clamping block 6 . The pin positioning block 11 includes a pin placement portion 111 and a lead guide portion 114 arranged in a stepped shape. Two lead positioning grooves 113 are provided on the lead guide portion 114 .

[0035] The lead guide portion 114 is arranged higher than the pin needle positioning portion. When no external force is applied to the guide rod 7, the elastic force of the spring 18 causes the welding clamping block 6 to move toward the direction close to the welding fixing block 4, thereby clamping the pin needle body 15 between the side of the welding clamping block 6 close to the welding fixing block 4 and the side of the lead guide portion 114 connected to the pin needle positioning portion.

[0036] The lead positioning groove 113 limits the positions of the two lead wires to be welded from the coil. The two lead wires to be welded are manually straightened and placed in the lead positioning groove 113, thereby ensuring that one end of the lead wire on the coil for welding is located on the upper surface of the pin needle body 15, thereby ensuring the consistency of the welding between the pin needle and the coil.

[0037] The pin needle body 15 includes a first end 151 and a second end 152. The surface of the welding clamping block 6 is provided with two clearance grooves 10 corresponding to the positions of the lead wire positioning grooves 113. The first end 151 is located in the clearance groove 10, and the second end 152 is located in the pin needle placement portion 111. When the welding clamping block 6 moves toward the welding fixing block 4, the second end 152 can be clamped between the welding clamping block 6 and the lead wire guide portion 114. The width of the clearance groove 10 is smaller than the width of the second end 152 on the pin needle body 15, so that the second end 152 on the pin needle body 15 can be clamped between the welding clamping block 6 and the lead wire guide portion 114, thereby ensuring the positioning of the pin needle body 15.

[0038] The surface of the coil positioning member 12 is provided with a coil placement groove 13, and the welding fixing block 4 is provided with a coil clamping assembly 14 on the same side as the coil positioning member 12. The coil placement groove 13 is used to preliminarily position the coil to be processed, and the coil clamping assembly 14 can ensure that the coil will not move during the subsequent welding process, that is, it will not affect the subsequent welding effect.

[0039] The coil clamping assembly 14 includes a positioning seat 141, a threaded rod 144 is horizontally penetrated on the positioning seat 141, a clamping plate 143 is arranged on the side of the threaded rod 144 close to the coil positioning member 12, and a hand wheel 142 is threadedly connected to the other end, and a spring 2 145 is sleeved on the portion of the threaded rod 144 between the clamping plate 143 and the positioning seat 141. When the hand wheel 142 is turned in a direction away from the coil positioning member 12, the external force applied to the spring 2 145 is reduced, and the spring 2 145 pushes the clamping plate 143 to move in a direction close to the coil positioning member 12 under the action of its own elastic force, so as to clamp the coil between the clamping plate 143 and the welding fixture.

[0040] The base 3 is connected to the spot welding bottom plate 1 through the spot welding slide rail 2, and the straight line where the length direction of the spot welding slide rail 2 is located is perpendicular to the straight line where the length direction of the fixed slide rail 52 is located. By sliding the base 3 on the spot welding bottom plate 1, it is convenient to move the base 3 toward or away from the spot welding machine.

[0041] Working principle: first, move the base 3 out of the spot welding position of the spot welding machine, push the guide rod 7 toward the direction close to the spot welding machine, and move the welding clamping block 6 toward the direction away from the welding fixing block 4. At this time, the staff will place the pin needle body to be spot welded on the pin needle positioning block 11, loosen the guide rod 7, and the guide rod 7 drives the welding clamping block 6 to reset under the elastic action of the spring 8 to clamp the pin needle body between the welding clamping block 6 and the welding fixing block 4, so as to realize the positioning of the pin needle body;

[0042] Then the staff places the coil to be welded on the coil positioning member 12, and rotates the hand wheel 142 in the opposite direction, so that the pressure on the second spring 145 becomes smaller. The second spring 145 can push the clamping plate 143 to move toward the direction close to the coil under its own elastic force, so as to clamp the coil between the welding fixing seat and the clamping plate 143, ensuring that the coil will not move in the subsequent spot welding process;

[0043] Finally, the staff straightens the two lead wires on the coil and places them in the middle spot welding position above the two pin needle bodies through the positioning guide of the lead positioning groove 113. At this time, the base 3 is moved forward to the spot welding position of the spot welding machine, and the spot welding machine welds one of the pin needle bodies and the lead wires thereon. After the welding is completed, the welding fixing block 4 is moved left or right to weld the other pin needle body and the lead wires thereon. When the two pin needle bodies are respectively welded to the leads thereon, the base 3 is moved backward out of the spot welding position of the spot welding machine, and after removing the excess lead wires, the guide rod 7 is pushed toward the direction of the spot welding machine again to push the welding clamping block 6 away from the welding fixing block 4. The staff can easily take out the welded coil and pin needle body.

[0044] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A spot welding tool, characterized in that: It comprises a welding fixing block for placing the pin needle body; one of the two opposite sides of the welding fixing block is provided with a coil positioning piece, and the other side is connected to the welding clamping block through a guide rod, a spring is sleeved on the part of the guide rod located on one side of the coil positioning piece, and a limited space is reserved between the welding clamping block and the welding fixing block for the pin needle body to be placed in and clamped.

2. A spot welding tool according to claim 1, characterized in that: It also includes a base, the welding fixed block is slidably connected to the base through a displacement sliding assembly, and the displacement sliding assembly includes a displacement sliding block arranged below the welding fixed block and a fixed sliding rail arranged on the base and matched with the displacement sliding block.

3. A spot welding tool according to claim 2, characterized in that: A limiting screw is respectively arranged on both sides of the base in the length direction, and the straight line where the limiting screw is located in the length direction is parallel to the straight line where the base is located in the length direction.

4. A spot welding tool according to claim 1, characterized in that: The guide rod is arranged horizontally, and one end thereof passes through the welding fixing block and is connected to the welding clamping block, and the other end is provided with a limit piece, and the spring is set on the guide rod at the part between the limit piece and the welding fixing block bracket.

5. A spot welding tool according to claim 1, characterized in that: A pin positioning block is arranged on one side of the welding fixing block close to the welding clamping block. The pin positioning block comprises a pin placement portion and a lead guide portion arranged in a stepped shape. Two lead positioning grooves are arranged on the lead guide portion.

6. A spot welding tool according to claim 5, characterized in that: The pin needle body includes a first end and a second end. Two makeshift grooves corresponding to the positions of the lead positioning grooves are provided on the surface of the welding clamping block. The first end is located in the makeshift groove, and the second end is located in the pin needle placement portion. When the welding clamping block moves toward the welding fixing block, the second end can be clamped between the welding clamping block and the lead guide portion.

7. A spot welding tool according to claim 1, characterized in that: A coil placement groove is provided on the surface of the coil positioning piece, and a coil clamping assembly is provided on the welding fixing block on the same side as the coil positioning piece.

8. A spot welding tool according to claim 7, characterized in that: The coil clamping assembly includes a positioning seat, a threaded rod is horizontally penetrated on the positioning seat, a clamping plate is arranged on one side of the threaded rod close to the coil positioning piece, and a hand wheel is threadedly connected to the other end, and a spring 2 is sleeved on the portion of the threaded rod located between the clamping plate and the positioning seat.

9. A spot welding tool according to claim 2, characterized in that: The base is connected to the spot welding bottom plate through a spot welding slide rail, and the straight line where the length direction of the spot welding slide rail is located is perpendicular to the straight line where the length direction of the fixed slide rail is located.

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