Welding tooling

Abstract

The present invention relates to the technical field of welding, and specifically discloses a welding tooling. In this welding tooling, a base is provided with a receiving groove for receiving a connecting piece, and the center of the through hole of the connecting piece coincides with the center of the circumscribed circle of the receiving groove; the positioning member is provided with a positioning pin, one end of the helical spring is provided with a first ring, the first ring is sleeved on the positioning pin and one end abuts against the abutting portion of the positioning member, the abutting portion is the mounting surface of the positioning pin on the positioning member and is located on the circumferential side of the positioning pin; among the positioning member and the base, one is provided with an assembly groove and the other is provided with an assembly pin; when the assembly pin is assembled in the assembly groove, the second ring at the other end of the helical spring abuts against the connecting piece, and the center of the circumscribed circle of the positioning pin coincides with the center of the circumscribed circle of the receiving groove. The above setting avoids the occurrence of position deviation between the helical spring and the connecting piece during the welding process, thereby ensuring the concentricity of the first ring and the through hole after welding.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and particularly to a welding tooling. Background Art

[0002] In the 3C industry, it is often necessary to connect a first workpiece and a second workpiece. Currently, the methods for connecting two workpieces generally include mechanical connection using rivets, metallurgical connection using welding, and physical connection using ultrasonic waves, etc.

[0003] The connection between the existing helical spring and the connecting piece generally adopts a welding method. During welding, the positions of the helical spring and the connecting piece are likely to move, resulting in a position offset between the helical spring and the connecting piece after welding. Furthermore, the concentricity between the through hole on the connecting piece and the ring at the upper end of the helical spring cannot be guaranteed, thereby affecting the product performance. Moreover, they are not in the same plane, and it is also difficult to test the concentricity.

[0004] Therefore, it is urgent to study a welding tooling to solve the problem that the relative position offset easily occurs during the welding process of the helical spring and the connecting piece, resulting in the inability to guarantee the concentricity between the center of the ring at the upper end of the helical spring and the through hole on the connecting piece. Summary of the Invention

[0005] The purpose of the present invention is to provide a welding tooling to solve the problem that the relative position offset easily occurs during the welding process of the helical spring and the connecting piece, resulting in the inability to guarantee the concentricity between the ring at the upper end of the helical spring and the through hole on the connecting piece.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a welding tooling, which includes:

[0008] A base, the base is provided with a receiving groove for receiving a first workpiece, and the center of the through hole of the first workpiece coincides with the center of the circumscribed circle of the receiving groove;

[0009] A positioning member, the positioning member is provided with a positioning pin. One end of a second workpiece is provided with a first ring, and the first ring is sleeved on the positioning pin and one end abuts against the positioning member; among the positioning member and the base, one is provided with an assembly groove, and the other is provided with an assembly pin; in the state where the assembly pin is assembled in the assembly groove, the second ring at the other end of the second workpiece abuts against the first workpiece, and the center of the circumscribed circle of the positioning pin coincides with the center of the circumscribed circle of the receiving groove.

[0010] As a preferred technical solution of a welding tooling, the welding tooling includes a locking member, the positioning member is provided with a locking portion, the locking member has a locking position and a release position, and the locking member can cooperate with the locking portion to lock the positioning member in the state where the locking member is located at the locking position.

[0011] As a preferred technical solution of a welding tooling, the base is provided with an assembly groove, the base is provided with a locking hole, the locking hole communicates with the assembly groove, the locking member is slidably disposed in the locking hole, the locking portion includes a notch provided at one end of the assembly pin, and in the state where the assembly pin is assembled in the assembly groove, the locking tongue of the locking member located at the locking position can be inserted into the notch.

[0012] As a preferred technical solution of a welding tooling, the welding tooling includes an elastic member, the elastic member is disposed between the locking member and the base and is used to stop the locking member at the locking position, the locking tongue is provided with a guiding portion, the guiding portion has an inclined surface structure, and the guiding portion is configured to push against the guiding portion during the process of inserting the assembly pin into the assembly groove so that the locking member moves to the release position.

[0013] As a preferred technical solution of a welding tooling, the assembly groove is located at the bottom of the accommodation groove, the assembly pin is located at one end of the positioning pin away from the positioning member, and the center of the circumcircle of the positioning pin coincides with the center of the circumcircle of the assembly pin.

[0014] As a preferred technical solution of a welding tooling, the positioning pin is provided with a limiting portion, and the limiting portion is used to limit the rotation angle of the second workpiece relative to the positioning pin.

[0015] As a preferred technical solution of a welding tooling, the second workpiece includes a helical spring, the positioning pin has a columnar structure, and the outer contour of its cross-section is in a helical shape, and the limiting portion is located at the position where the outer diameter of the helical shape is the largest.

[0016] As a preferred technical solution of a welding tooling, the second workpiece includes a compression spring, and the height of the positioning pin is less than the length dimension of the compression spring before compression.

[0017] As a preferred technical solution of a welding tooling, the cross-sectional shape of the assembly pin is non-circular, the contour of the assembly groove is non-circular, and is adapted to the cross-sectional shape of the assembly pin.

[0018] As a preferred technical solution of a welding tooling, the positioning member is provided with a support foot at one end close to the base, and in the state where the assembly pin is assembled in the assembly groove, the support foot presses against the first workpiece.

[0019] The beneficial effects of the present invention are:

[0020] The present invention provides a welding tool, which comprises a base, a receiving groove for accommodating a first workpiece, a positioning piece, and a positioning pin on the positioning piece, and a first ring of a second product is sleeved on the positioning pin, and an assembly pin and an assembly groove are provided so that the positioning piece and the base can be assembled as one, and the center of the circumscribed circle of the positioning pin coincides with the center of the circumscribed circle of the receiving groove, and the center of the through hole of the first workpiece coincides with the center of the circumscribed circle of the receiving groove, so that the concentricity of the first ring and the through hole of the second workpiece is guaranteed, and when the assembly pin is assembled in the assembly groove, the second ring at the other end of the second workpiece abuts against the first workpiece, thereby avoiding positional offset between the second workpiece and the first workpiece during the welding process, thereby ensuring the concentricity of the first ring and the through hole after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a welding tool in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a welding tool in an embodiment of the present invention, with the positioning parts hidden;

[0023] Figure 3 This is a schematic diagram of the structure of a positioning member in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the cross-sectional structure of a welding tool in an embodiment of the present invention;

[0025] Figure 5 Schematic diagram of the structure of the connecting piece and the helical spring in an embodiment of the present invention.

[0026] In the figure:

[0027] 100, connecting piece; 110, through hole; 200, helical spring; 210, first ring; 2101, end; 220, second ring; 310, first welding point; 320, second welding point; 400, welding equipment;

[0028] 1. Base; 11. Accommodation groove; 12. Assembly groove; 13. Locking hole;

[0029] 2. Positioning member; 21. Positioning pin; 211. Limiting portion; 22. Assembly pin; 221. Locking portion; 23. Support foot;

[0030] 3. Locking member; 31. Lock tongue; 32. Guide portion; 33. Driving portion;

[0031] 4. Elastic parts;

[0032] 5. Workbench; 51. First chute; 52. Second chute; 53. First limit block; 54. Second limit block. Detailed implementation manners

[0033] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present invention belong to the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and cannot be understood as a limitation to the present invention.

[0037] As Figures 1-5As shown in the figure, this embodiment provides a welding tooling for welding a first workpiece and a second workpiece. The first workpiece and the second workpiece may be a connecting piece 100 and a spiral spring 200 respectively. Of course, in other embodiments, they may also be other products with the same characteristics, which is not limited thereto. For the convenience of description in this embodiment, the connecting piece 100 and the spiral spring 200 are taken as examples for illustration. The welding tooling includes a base 1 and a positioning member 2. The base 1 is provided with a receiving groove 11 for receiving the connecting piece 100. The center of the through hole 110 of the connecting piece 100 coincides with the center of the circumscribed circle of the receiving groove 11. The positioning member 2 is provided with a positioning pin 21. One end of the spiral spring 200 is provided with a first ring 210. The first ring 210 is sleeved on the positioning pin 21 and one end abuts against the abutting portion of the positioning member 2. The abutting portion is the mounting surface of the positioning pin 21 on the positioning member 2 and is located on the circumferential side of the positioning pin 21. One of the positioning member 2 and the base 1 is provided with an assembly groove 12, and the other is provided with an assembly pin 22. When the assembly pin 22 is assembled in the assembly groove 12, the second ring 220 at the other end of the spiral spring 200 abuts against the connecting piece 100, and the center of the circumscribed circle of the positioning pin 21 coincides with the center of the circumscribed circle of the receiving groove 11.

[0038] By providing the base 1 and arranging the receiving groove 11 on the base 1 to accommodate the connecting piece 100; by providing the positioning member 2 and arranging the positioning pin 21 on the positioning member 2, the first ring 210 of the spiral spring 200 is sleeved on the positioning pin 21; by providing the assembly pin 22 and the assembly groove 12, the positioning member 2 and the base 1 can be assembled into one body. By making the center of the circumscribed circle of the positioning pin 21 coincide with the center of the circumscribed circle of the receiving groove 11 and the center of the through hole 110 of the connecting piece 100 coincide with the center of the circumscribed circle of the receiving groove 11, the concentricity between the first ring 210 of the spiral spring 200 and the through hole 110 is ensured. When the assembly pin 22 is assembled in the assembly groove 12, the second ring 220 at the other end of the spiral spring 200 abuts against the connecting piece 100, which avoids the position offset between the spiral spring 200 and the connecting piece 100 during the welding process, and further ensures the concentricity between the first ring 210 and the through hole 110 after welding. In this state, it is convenient to sequentially pass the trapezoidal cylinder rubber product through the through hole 110 and the first ring 210.

[0039] In this embodiment, the welding tooling includes a locking member 3. The positioning member 2 is provided with a locking portion 221. The locking member 3 has a locking position and a release position. In the state where the locking member 3 is located at the locking position, it can cooperate with the locking portion 221 to lock the positioning member 2. With the arrangement of the locking member 3, the positioning member 2 can be locked, preventing the positioning member 2 from changing its position during the welding process, and ensuring the welding accuracy of the helical spring 200 and the connecting piece 100. Among them, in this embodiment, the helical spring 200 is in a compressed state. The positioning member 2 can be positioned by the cooperation of the assembly pin 22 and the bottom of the assembly groove 12. In addition, it can also be directly pressed on the helical spring 200, and the entire weight of the positioning member 2 is borne by the helical spring 200. In this embodiment, there can be a certain gap between the positioning member 2 and the connecting piece 100. That is, the positioning member 2 is in a state of being lifted by the helical spring 200. In this embodiment, with the arrangement of the locking member 3, it can prevent the positioning member 2 from bouncing up, increasing the compression amount of the helical spring 200, so that the pressure between the second ring 220 and the connecting piece 100 remains in a relatively large state, and thus the friction force between the second ring 220 and the connecting piece 100 is relatively large, and relative sliding is not likely to occur, which is beneficial to ensuring the position accuracy after welding.

[0040] The base 1 is provided with an assembly groove 12 and a locking hole 13. The locking hole 13 communicates with the assembly groove 12. The locking member 3 is slidably arranged in the locking hole 13. The locking portion 221 includes a notch provided at one end of the assembly pin 22. When the assembly pin 22 is assembled in the assembly groove 12, the locking tongue 31 of the locking member 3 located at the locking position can be inserted into the notch. The above arrangement can make full use of the thickness dimension of the base 1, set the locking hole 13 on the base 1, and with the communication arrangement of the assembly groove 12 and the locking hole 13, the locking tongue 31 of the locking member 3 can be directly arranged at the end of the locking member 3, with a simple structure and low cost.

[0041] In this embodiment, the welding tooling includes an elastic member 4. The elastic member 4 is arranged between the locking member 3 and the base 1 and is used to stop the locking member 3 at the locking position. The locking tongue 31 is provided with a guiding portion 32. The guiding portion 32 has an inclined surface structure. The guiding portion 32 is configured to push against the guiding portion 32 during the process of inserting the assembly pin 22 into the assembly groove 12 to move the locking member 3 to the release position. The arrangement of the elastic member 4 ensures that the locking member 3 is stopped at the locking position, preventing the locking member 3 from moving to the release position during the locking process, improving the reliability of locking the positioning member 2, and enabling the linkage action between the locking member 3 and the assembly pin 22, simplifying the docking process of the helical spring 200 and the connecting piece 100.

[0042] Regarding the structure of the elastic member 4, in this embodiment, the elastic member 4 includes a spring, and the locking member 3 is provided with a mounting groove, and one end of the elastic member 4 is arranged in the mounting groove. This arrangement prevents the spring from popping out, thereby improving the safety of the elastic member 4. There are two springs, which are arranged in parallel to facilitate the smooth pushing of the locking member 3. In addition, in order to facilitate the unlocking of the locking member 3, in this embodiment, preferably, the locking member 3 is provided with a toggle portion 33, and the toggle portion 33 is used for manual toggle to move the locking member 3 from the locked position to the released position.

[0043] Considering the relative positional relationship between the helical spring 200 and the connecting piece 100, in this embodiment, the cross-sectional shape of the assembly pin 22 is non-circular, and the profile of the assembly groove 12 is non-circular and matched with the assembly pin 22. With the above arrangement, the relative angles of the assembly pin 22 and the assembly groove 12 are aligned before assembly, so that the relative positional relationship between the helical spring 200 and the connecting piece 100 can be guaranteed.

[0044] Since two points on the second circular ring 220 of the spiral spring 200 that are symmetrical about the center of the second circular ring 220 are welded to the connecting piece 100, the two welding points are respectively recorded as the first welding point 310 and the second welding point 320. Optionally, the cross-sectional shape of the assembly pin 22 is a rectangle. Of course, the cross-sectional shape of the assembly pin 22 can also be adjusted according to the different positions of the welding points of the product. Or in another embodiment, the assembly pin 22 and the assembly groove 12 are both circular, a positioning protrusion is provided on the assembly pin 22, and a positioning groove is provided on the assembly groove 12. This setting can adapt to the adaptation of any angle between the assembly pin 22 and the assembly groove 12, and has a simple structure and low cost.

[0045] In this embodiment, the assembly groove 12 is located at the bottom of the accommodating groove 11, and the assembly pin 22 is located at the end of the positioning pin 21 away from the positioning member 2, and is integrally formed, and the center of the circumscribed circle of the positioning pin 21 coincides with the center of the circumscribed circle of the assembly pin 22. The layout of this position makes it easier to ensure the concentricity of the coaxial arrangement of the positioning pin 21 and the assembly pin 22, reducing the difficulty of processing. On the other hand, the overall length of the assembly groove 12 is reduced, which is conducive to reducing costs.

[0046] When the angles between the positioning pin 21 and the helical spring 200 do not correspond, the position of the welding point between the helical spring 200 and the connecting piece 100 will change, which will affect the operation of the welding device 400 and may cause the positioning member 2 to block the welding point position. For this reason, in this embodiment, the positioning pin 21 is provided with a limiting portion 211, which is used to limit the rotation angle of the helical spring 200 relative to the positioning pin 21. The limiting portion 211 is used to stop the end 2101 of the first ring 210 of the helical spring 200.

[0047] Specifically, the positioning pin 21 is of a columnar structure, and the outer contour of its cross-section is in the shape of a spiral. The limiting portion 211 is located at the end 2101 of the spiral shape. This setting maximizes the contact area between the first ring 210 and the positioning column, which is beneficial to ensuring the stability of the spiral spring 200 and preventing tilting.

[0048] In this embodiment, the spiral spring 200 is a compression spring, and the height of the positioning pin 21 is less than the length dimension of the spiral spring 200 before compression. With the above dimension setting, it is easy to compress the spiral spring 200, and the shorter dimension is beneficial to cost reduction.

[0049] One end of the positioning member 2 close to the base 1 is provided with support feet 23. When the assembly pin 22 is assembled in the assembly groove 12, the support feet 23 press against the connecting piece 100. Optionally, there are four support feet 23, and the four support feet 23 are dispersed around the positioning pin 21 to achieve stable loading of the positioning member 2. The setting of the support feet 23 makes the support feet 23 press on the upper side of the connecting piece 100 when the assembly pin 22 is assembled in place, that is, in the state where the locking member 3 locks the positioning member 2, so that the position of the connecting piece 100 will not move, further improving the welding accuracy between the spiral spring 200 and the connecting piece 100. In this embodiment, when the support feet 23 press against the connecting piece 100, it is only necessary to ensure that the distance between the connecting piece 100 and the abutting portion is less than the length of the spiral spring 200 in the natural state. In this embodiment, the spiral spring 200 is a compression spring, and the pressure on the connecting piece 100 is the difference between the gravity of the positioning member 2 and the elastic force of the spiral spring 200. By simultaneously pressing and loading the spiral spring 200 and the connecting piece 100 through the positioning member 2, it is possible to ensure that there is no relative offset between the two as much as possible, ensuring the position accuracy after welding, and thus ensuring the concentricity of the first ring 210 and the through hole 110 after welding.

[0050] Optionally, the welding tooling further includes a workbench 5, on which there are a first chute 51 and a second chute 52 with mutually perpendicular extending directions. Among them, a first limiting block 53 is slidably arranged in the first chute 51, and a second limiting block 54 is slidably arranged in the second chute 52. Among them, the base 1 is placed on the workbench 1. Among the two adjacent side surfaces of the base 1, one abuts against the first limiting block 53, and the other abuts against the second limiting block 54. This setting can limit the position of the base 1 and can adapt to bases 1 of different sizes. Preferably, a number of installation holes are arranged at intervals at the bottom of the first chute 51 and the second chute 52, and at least one fixing hole is arranged on both the first limiting block 53 and the second limiting block 54. After the fixing member passes through the fixing hole, it cooperates with the installation hole. Among them, the fixing member can be a pin or a screw, and the installation hole can be a pin hole or a screw hole. This setting enables the first limiting block 53 and the second limiting block 54 to be locked to the workbench 5 after the relative positions are adjusted, improving the stability during the working process.

[0051] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Welding tooling, characterized in that, it includes: A base (1), the base (1) is provided with a receiving groove (11), the receiving groove (11) is used to receive a first workpiece, and the center of the through hole (110) of the first workpiece coincides with the center of the circumcircle of the receiving groove (11); A positioning member (2), the positioning member (2) is provided with a positioning pin (21), one end of a second workpiece is provided with a first ring (210), the first ring (210) is sleeved on the positioning pin (21) and one end abuts against the positioning member (2); among the positioning member (2) and the base (1), one is provided with an assembly groove (12), and the other is provided with an assembly pin (22); when the assembly pin (22) is assembled in the assembly groove (12), the second ring (220) at the other end of the second workpiece abuts against the first workpiece, and the center of the circumcircle of the positioning pin (21) coincides with the center of the circumcircle of the receiving groove (11); The welding tooling includes a locking member (3), the positioning member (2) is provided with a locking portion (221), the locking member (3) has a locking position and a release position, and when the locking member (3) is in the locking position, it can cooperate with the locking portion (221) to lock the positioning member (2); The positioning pin (21) is provided with a limiting portion (211), and the limiting portion (211) is used to limit the rotation angle of the second workpiece relative to the positioning pin (21); The second workpiece includes a helical spring (200), the positioning pin (21) is a columnar structure, and the outer contour of its cross-section is in a helical shape, and the limiting portion (211) is located at the position where the outer diameter of the helical shape is the largest.

2. The welding tooling according to claim 1, characterized in that, The base (1) is provided with an assembly groove (12), the base (1) is provided with a locking hole (13), the locking hole (13) communicates with the assembly groove (12), the locking member (3) is slidably arranged in the locking hole (13), the locking portion (221) includes a notch provided at one end of the assembly pin (22), and when the assembly pin (22) is assembled in the assembly groove (12), the locking tongue (31) of the locking member (3) in the locking position can be inserted into the notch.

3. The welding tooling according to claim 2, characterized in that, The welding tooling includes an elastic member (4), the elastic member (4) is arranged between the locking member (3) and the base (1) and is used to stop the locking member (3) at the locking position, the locking tongue (31) is provided with a guiding portion (32), the guiding portion (32) is in an inclined surface structure, and the guiding portion (32) is configured to be able to push the guiding portion (32) when the assembly pin (22) is inserted into the assembly groove (12) so that the locking member (3) moves to the release position.

4. The welding tooling according to claim 1, characterized in that, The assembly groove (12) is located at the bottom of the accommodation groove (11), the assembly pin (22) is located at one end of the positioning pin (21) away from the positioning member (2), and the center of the circumcircle of the positioning pin (21) coincides with the center of the circumcircle of the assembly pin (22).

5. The welding tooling according to any one of claims 1-4, characterized in that the second workpiece includes a compression spring, and the height of the positioning pin (21) is less than the length dimension of the compression spring before compression.

6. The welding tooling according to any one of claims 1-4, characterized in that the cross-sectional shape of the assembly pin (22) is non-circular, the contour of the assembly groove (12) is non-circular, and is adapted to the cross-sectional shape of the assembly pin (22).

7. The welding tooling according to any one of claims 1-4, characterized in that a support leg (23) is provided at one end of the positioning member (2) close to the base (1), and when the assembly pin (22) is assembled in the assembly groove (12), the support leg (23) presses against the first workpiece.

Images