Spot welding tool
By designing spot welded tools for pin components and limit structures, the problems of scalds and positioning errors of human hands are solved, and a safe and efficient welding process is achieved.
Patent Information
- Application Number
- CN202422097308.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In existing spot welding equipment, manual positioning errors affect welding quality and safety.
A spot welded tool is designed, adopting a pin assembly and a limit structure, and the position of the welded part is stabilized through the push rod of the pin assembly, combining the limits of the bumps and cover plates to ensure the accurate positioning and safety of the welded part.
It improves safety and positioning accuracy during welding, reduces errors caused by manual positioning, and improves welding quality and efficiency.
Smart Images
Figure CN223172259U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding, and particularly relates to a spot welding tooling. Background Art
[0002] In the existing spot welding tooling for heat exchanger components, grooves and protrusions are provided on the bottom plate of the spot welding tooling. The side strips and partitions (collectively referred to as the workpieces to be welded) are placed in the grooves, manually adjusted, and the workpieces to be welded are pushed against the inner wall of the grooves. At the same time, the workpieces to be welded are pushed against the protrusions to limit the workpieces to be welded. However, since the side strips and the grooves are in an interference fit, there are inevitably gaps. Without external force constraint, the side strips and the partitions are likely to be slightly misaligned. If the cover plate is pressed by hand to restrain the workpieces to be welded, the human hand is easily scalded.
[0003] In view of the above deficiencies, it is necessary to design a new spot welding tooling. Content of the Utility Model
[0004] Therefore, the technical problem to be solved by the utility model is that when the cover plate is pressed by hand to restrain the workpieces to be welded, the human hand is easily scalded, so as to provide a spot welding tooling.
[0005] To solve the above technical problems, the technical solution of the utility model is as follows:
[0006] A spot welding tooling, comprising:
[0007] A base, the top surface of the base is recessed inward to form a placement groove, the placement groove includes a first placement groove and a second placement groove, the first placement groove is adapted to accommodate a first workpiece to be welded, and the second placement groove is adapted to accommodate a second workpiece to be welded; an insertion pin component accommodating groove is further opened on the base outside the first placement groove, and an installation opening is opened at the top of the insertion pin component accommodating groove;
[0008] An insertion pin assembly, which is installed in the insertion pin component accommodating groove from the installation opening, the insertion pin assembly includes an L-shaped push rod, the insertion pin assembly includes a locked state and an unlocked state. In the locked state, one end of the push rod enters the first placement groove and is adapted to push the first workpiece to be welded towards the second workpiece to be welded. In the unlocked state, the push rod can move along the length direction of the insertion pin component accommodating groove.
[0009] Further, the depth of the first placement groove is greater than the depth of the second placement groove, and / or the width of the first placement groove is less than the width of the second placement groove.
[0010] Further, it further includes another first placement groove, and the two first placement grooves are respectively located on two opposite sides of the second placement groove.
[0011] Further, two pin member receiving grooves and two pin assemblies are provided corresponding to one of the first placement grooves, and the two pin member receiving grooves and the two pin assemblies are respectively arranged at two ends of one of the first placement grooves.
[0012] Further, a relief hole is formed at the convex corner of the first placement groove, and an arc chamfer is provided at the concave corner.
[0013] Further, a pick-and-place groove is formed by inward depression on the top surface of the base. The pick-and-place groove is located outside the first placement groove and communicates with the first placement groove.
[0014] Further, the depth of the pick-and-place groove is less than the depth of the first placement groove.
[0015] Further, the pick-and-place groove is arranged corresponding to the middle part in the length direction of the first placement groove.
[0016] Further, the spot welding tooling further includes a cover plate adapted to the shape of the placement groove. The cover plate is adapted to press the first workpiece to be welded and the second workpiece to be welded towards the bottom of the placement groove, and a plurality of spot welding through holes are formed at the edge of the cover plate.
[0017] Further, convex blocks are respectively and inwardly protruded on two opposite side walls of the second placement groove. The convex blocks enter into a first notch provided at the edge of the second workpiece to be welded and a second notch provided at the edge of the cover plate, and the convex blocks are used for laterally limiting the cover plate and the second workpiece to be welded.
[0018] The technical solution of the present utility model has the following advantages:
[0019] 1. For the spot welding tooling provided by the present utility model, after the first workpiece to be welded and the second workpiece to be welded are respectively placed in the first placement groove and the second placement groove, the pin assembly is placed in the locking position. The push rod of the pin assembly can push the first workpiece to be welded towards the second workpiece to be welded, and the second workpiece to be welded is limited by the first workpiece to be welded to stabilize the relative positions of the first workpiece to be welded and the second workpiece to be welded, ensuring the welding quality of the first workpiece to be welded and the second workpiece to be welded. Compared with the form of manually limiting the first workpiece to be welded and the second workpiece to be welded, this design of limiting the first workpiece to be welded and the second workpiece to be welded can improve the safety during the welding process. In addition, using the pin assembly for limiting and positioning, compared with manual positioning (manual positioning may have welding quality problems due to hand shaking and different pushing forces of different operators on the first workpiece to be welded), it can improve the positioning accuracy and convenience of the first workpiece to be welded and the second workpiece to be welded, thereby improving the spot welding efficiency.
[0020] 2. The spot welding tooling provided by the present utility model is provided with two pin member receiving grooves and two pin assemblies corresponding to one first placement groove. The two pin member receiving grooves and the two pin assemblies are respectively arranged at both ends of the first placement groove. In this way, the two ends of the first workpiece to be welded can be positioned and limited simultaneously, making the force on the first workpiece to be welded more balanced and the limiting more reliable.
[0021] 3. The spot welding tooling provided by the present utility model has the placement and removal groove arranged in the middle of the first placement groove in the length direction. In this way, when placing and removing, force can be applied to the middle position of the first workpiece to be welded, making the placement and removal more stable.
[0022] 4. The spot welding tooling provided by the present utility model has an avoidance hole opened at the convex corner of the first placement groove and an arc chamfer at the concave corner. The settings of the avoidance hole and the arc chamfer are both to reduce the interference risk between the first placement groove and the first workpiece to be welded, so that the first workpiece to be welded can be smoothly placed in the first placement groove.
[0023] 5. The spot welding tooling provided by the present utility model has convex blocks protruding inwardly on two opposite side walls of the second placement groove. The convex blocks enter the first notch provided at the edge of the second workpiece to be welded and the second notch provided at the edge of the cover plate. The convex blocks are used for laterally limiting the cover plate and the second workpiece to be welded. In this way, the convex blocks cooperate with the pin assemblies to laterally limit the second workpiece to be welded from different directions, further ensuring the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0025] Figure 1 It is a top view schematic diagram of the spot welding tooling in the embodiment of the present utility model;
[0026] Figure 2 For Figure 1 the enlarged view at A in
[0027] Figure 3 It is a top view schematic diagram of two first workpieces to be welded (side strips) in the embodiment of the present utility model;
[0028] Figure 4 It is a top view schematic diagram of the cover plate in the embodiment of the present utility model;
[0029] Figure 5 It is a top view schematic diagram of the second workpiece to be welded (partition board) in the embodiment of the present utility model;
[0030] Figure 6 This is a top view of the spot welding tool with the cover plate installed and the latch assembly removed in the embodiment of the present invention;
[0031] Figure 7 Schematic top view of the latch assembly in the embodiment of the present invention in the locked state;
[0032] Figure 8 Schematic diagram of the interior of the latch assembly in an embodiment of the present invention.
[0033] Description of reference numerals:
[0034] 1. Base; 11. Placement groove; 111. First placement groove; 1111. Avoidance hole; 1112. Arc chamfer; 112. Second placement groove; 1121. Bump; 12. Pick-up and drop groove; 2. Latch assembly; 20. Sleeve; 200. Bayonet; 201. Strip groove; 21. Push rod; 211. Main push rod; 212. Toggle part; 22. Fixed plate; 23. Top plate; 24. Reset part; 3. First part to be welded; 4. Second part to be welded; 41. First notch; 5. Cover plate; 51. Second notch; 52. Spot welding hole. DETAILED DESCRIPTION
[0035] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.
[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0037] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0038] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0039] As Figures 1 to 8 shown, the present utility model provides a spot welding tooling, which includes a base 1 and a pin assembly 2. A placement groove 11 is recessed inward on the top surface of the base 1. The placement groove 11 includes a first placement groove 111 and a second placement groove 112. The first placement groove 111 is adapted to accommodate a first workpiece to be welded 3 (as Figure 3 shown), and the second placement groove 112 is adapted to accommodate a second workpiece to be welded 4. A pin member accommodating groove (not shown) is further formed on the base 1 outside the first placement groove 111. An installation opening (not shown) is formed at the top of the pin member accommodating groove. The pin assembly 2 is installed in the pin member accommodating groove from the installation opening. The pin assembly 2 includes an L-shaped push rod 21. The pin assembly 2 has a locked state and an unlocked state. In the locked state, one end of the push rod 21 enters the first placement groove 111 and is adapted to push the first workpiece to be welded 3 towards the second workpiece to be welded 4. In the unlocked state, the push rod 21 can move along the length direction of the pin member accommodating groove.
[0040] For the spot welding tooling provided by the present utility model, after the first workpiece to be welded 3 and the second workpiece to be welded 4 are respectively placed in the first placement groove 111 and the second placement groove 112, the pin assembly 2 is placed in the locked position. The push rod 21 of the pin assembly 2 can push the first workpiece to be welded 3 towards the second workpiece to be welded 4 to stabilize the relative positions of the first workpiece to be welded 3 and the second workpiece to be welded 4 and ensure the welding quality of the first workpiece to be welded 3 and the second workpiece to be welded 4. Compared with the form of manually limiting the first workpiece to be welded 3 and the second workpiece to be welded 4, such a design of limiting the first workpiece to be welded 3 and the second workpiece to be welded 4 can improve the safety during the welding process. In addition, using the pin assembly 2 for limiting and positioning, compared with manual positioning (manual positioning may have welding quality problems caused by hand shaking and different pushing forces of different operators on the first workpiece to be welded 3), it can improve the positioning accuracy and convenience of the first workpiece to be welded 3 and the second workpiece to be welded 4, and thus improve the spot welding efficiency.
[0041] Further, the depth of the first placement groove 111 is greater than that of the second placement groove 112, and / or, the width of the first placement groove 111 (the width direction is as shown by the arrow in Figure 1 ) is less than that of the second placement groove 112. Moreover, the projected area of the first placement groove 111 in the horizontal plane is much smaller than that of the second placement groove 112 in the horizontal plane.
[0042] In this embodiment, the spot welding tooling is used for welding a component of a heat exchanger. The first workpiece to be welded 3 is a side strip, and the second workpiece to be welded 4 is a partition plate. The number of the first placement grooves 111 for placing the side strips is two, and they are respectively located on two opposite sides of the second placement groove 112. The number of the second placement grooves 112 for placing the partition plates is one. Of course, it can also be used for spot welding of other components.
[0043] Preferably, as shown in Figure 1 , corresponding to one first placement groove 111, there are two pin member receiving grooves and two pin assemblies 2. The two pin member receiving grooves and the two pin assemblies 2 are respectively arranged at both ends of one first placement groove 111. In this way, the two ends of the first workpiece to be welded 3 can be positioned and limited simultaneously, making the force on the first workpiece to be welded 3 more balanced and the limiting more reliable.
[0044] Further, a pick-and-place groove 12 is formed by inward depression on the top surface of the base 1 (as shown in Figure 1 ). The pick-and-place groove 12 is located outside the first placement groove 111, and the pick-and-place groove 12 communicates with the first placement groove 111. The setting of the pick-and-place groove 12 facilitates the picking and placing of the first workpiece to be welded 3. Specifically, the cross-section of the pick-and-place groove 12 is a rectangular cross-section, and its depth is less than that of the first placement groove 111.
[0045] Further, the pick-and-place groove 12 is arranged corresponding to the middle of the length direction of the first placement groove 111. In this way, when picking and placing, force can be applied to the middle position of the first workpiece to be welded 3, and the picking and placing are more stable.
[0046] Further, the spot welding tooling further includes a cover plate 5 that is adapted to the shape of the placement groove 11 (as shown in Figure 4 and [[ID=2,4]] Figure 6 ). The cover plate 5 presses the first workpiece to be welded 3 and the second workpiece to be welded 4 towards the bottom of the placement groove 11. A plurality of spot welding through holes 52 are formed at the edge of the cover plate 5 (as shown in Figure 4 ). The center distance of the spot welding through holes 52 from the edge of the cover plate 5 is within 10 mm, and the spot welding through holes 52 deviate outward from the joint seam of the first workpiece to be welded 3 and the second workpiece to be welded 4 by a preset distance to prevent warping during the welding process.
[0047] Further, convex blocks 1121 are respectively and inwardly protruded on two opposite side walls of the second placement groove 112 (as shown in Figure 1As shown), the protrusion 1121 enters the first notch 41 provided at the edge of the second workpiece 4 to be welded and the second notch 51 provided at the edge of the cover plate 5 (as shown). Figure 4 As shown), the protrusion 1121 is used to laterally limit the cover plate 5 and the second part to be welded 4. In this way, the protrusion 1121 cooperates with the latch assembly 2 to laterally limit the second part to be welded 4 from different directions, further ensuring the welding quality.
[0048] Furthermore, a relief hole 1111 (such as Figure 2 As shown), there is an arc chamfer 1112 at the concave corner (as shown Figure 2 As shown), the avoidance hole 1111 and the arc chamfer 1112 are provided to reduce the risk of interference between the first placement groove 111 and the first workpiece 3 to be welded, so that the first workpiece 3 to be welded can be smoothly placed in the first placement groove 111.
[0049] In this embodiment, if Figure 7 and Figure 8 As shown, the latch assembly 2 further includes a sleeve 20 extending parallel to the length of the latch member receiving slot. A main push rod 211 of the push rod 21 is located within the sleeve 20. A bayonet 200 is defined on the outer wall of the sleeve 20, and a strip groove 201 is defined on the top surface of the sleeve 20. In the unlocked state, the main push rod 211 can slide along the length of the sleeve 20, and the toggle portion 212 passes through the strip groove 201 and enters the mounting opening. Alternatively, the toggle portion 212 passes through the strip groove 201 and the mounting opening and protrudes from the top surface of the base 1. In the locked state, the toggle portion 212 is engaged in the bayonet 200, and the end of the push rod 21 away from the toggle portion 212 enters the first placement groove 111 and abuts the first workpiece 3 to be welded. The latch assembly 2 also includes a fixing plate 22, which is arranged parallel to the sleeve 20 and connected to the outer wall of the sleeve 20. The fixing plate 22 is fixedly connected to the inner bottom wall of the latch member receiving groove. The fixing plate 22 and the inner bottom wall of the latch member receiving groove can be welded or fixedly connected by fasteners (such as screws, bolts, etc.). The latch assembly 2 also includes a top plate 23, which is fixed to the end of the main push rod 211 away from the toggle portion 212. The top plate 23 has a circular or square structure and can be integrally formed with the main push rod 211 or threadedly connected to the main push rod 211. The cross-section of the top plate 23 is larger than the cross-section of the main push rod 211, thereby increasing the contact area between the latch assembly 2 and the first part to be welded 3, and can more stably and better position the first part to be welded 3. The latch assembly 2 also includes a reset member 24 (specifically a reset spring), the two ends of which are respectively connected to the end wall of the sleeve 20 away from the first placement groove 111 and the end of the main push rod 211 away from the first placement groove 111. After the locking state is released, the reset spring will pull the push rod 21 back to its original position.
[0050] The following describes the process of welding using the spot welding tool provided by the utility model:
[0051] Place the first workpiece 3 to be welded in the first placement groove 111, and place the second workpiece 4 to be welded in the second placement groove 112, with the protrusion 1121 entering the first notch 41 of the second workpiece 4 to be welded;
[0052] Adjust the positions of the first workpiece to be welded 3 and the second workpiece to be welded 4 so that the adjacent edges of the first workpiece to be welded 3 and the second workpiece to be welded 4 can fit well together;
[0053] Use the top plate 23 on the latch assembly 2 to press against the first workpiece 3 to limit the first workpiece 3 to be welded laterally, and use the first workpiece 3 to limit the second workpiece 4 to be welded. Then, snap the toggle portion 212 of the latch assembly 2 into the bayonet 200 to lock the latch assembly 2.
[0054] Place the cover plate 5 on the first workpiece 3 and the second workpiece 4, and allow the protrusion 1121 to enter the second notch 51 on the cover plate 5.
[0055] The welding gun enters the spot welding hole 52 to weld the first workpiece 3 and the second workpiece 4 together.
[0056] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.
Claims
1. A spot welding tooling, characterized in that, Comprising: A base (1), the top surface of the base (1) is recessed inward to form a placement groove (11), the placement groove (11) includes a first placement groove (111) and a second placement groove (112), the first placement groove (111) is adapted to accommodate a first workpiece to be welded (3), and the second placement groove (112) is adapted to accommodate a second workpiece to be welded (4); on the base (1), a plug member receiving groove is further opened outside the first placement groove (111), and an installation opening is provided at the top of the plug member receiving groove. A plug assembly (2), installed in the plug member receiving groove from the installation opening, the plug assembly (2) includes an L-shaped push rod (21), the plug assembly (2) has a locked state and an unlocked state. In the locked state, one end of the push rod (21) enters the first placement groove (111) and is adapted to push the first workpiece to be welded (3) towards the second workpiece to be welded (4). In the unlocked state, the push rod (21) can move along the length direction of the plug member receiving groove.
2. The spot welding tooling according to claim 1, characterized in that, The depth of the first placement groove (111) is greater than the depth of the second placement groove (112), and / or the width of the first placement groove (111) is less than the width of the second placement groove (112).
3. The spot welding tooling according to claim 1, wherein, It further includes another first placement groove (111), and the two first placement grooves (111) are respectively located on two opposite sides of the second placement groove (112).
4. The spot welding tooling according to claim 3, characterized in that Corresponding to one first placement groove (111), two plug member receiving grooves and two plug assemblies (2) are provided, and the two plug member receiving grooves and the two plug assemblies (2) are respectively arranged corresponding to the two ends of the first placement groove (111).
5. The spot welding tooling according to claim 1, characterized in that, An avoidance hole (1111) is provided at the convex corner of the first placement groove (111), and an arc chamfer (1112) is provided at the concave corner.
6. The spot welding tooling according to claim 1, characterized in that, The top surface of the base (1) is further recessed inward to form a picking and placing groove (12), the picking and placing groove (12) is located outside the first placement groove (111), and the picking and placing groove (12) communicates with the first placement groove (111).
7. The spot welding tooling according to claim 6, wherein, The depth of the picking and placing groove (12) is less than the depth of the first placement groove (111).
8. The spot welding tooling according to claim 6, characterized in that, The picking and placing groove (12) is arranged corresponding to the middle of the length direction of the first placement groove (111).
9. The spot welding tooling according to any one of claims 1 to 8, characterized in that The spot welding tooling further includes a cover plate (5) adapted to the shape of the placement groove (11), the cover plate (5) is adapted to press the first workpiece to be welded (3) and the second workpiece to be welded (4) towards the bottom of the placement groove (11), and a plurality of spot welding through holes (52) are provided at the edge of the cover plate (5).
10. The spot welding tooling according to claim 9, characterized in that, On two opposite side walls of the second placement groove (112), convex blocks (1121) are respectively protruded inward, and the convex blocks (1121) enter a first notch (41) provided at the edge of the second workpiece to be welded (4) and a second notch (51) provided at the edge of the cover plate (5), and the convex blocks (1121) are used for laterally limiting the cover plate (5) and the second workpiece to be welded (4).