Stud welding positioning device

Abstract

The utility model discloses a stud welding and positioning device, which comprises a base, the conducting rod is arranged on the base in a manner of being capable of being driven to move along the axial direction of the conducting rod; the positioning sleeve is detachably arranged at the end part of the conducting rod in a sleeving manner; the positioning sleeve is provided with a positioning hole used for containing a stud to be welded, the positioning hole axially penetrates through the positioning sleeve and enables one end of the stud to be welded to abut against the top end face of the conducting rod, and a limiting sleeve used for positioning the axial position of the positioning sleeve on the conducting rod is arranged in the positioning sleeve in a sleeved mode. According to the stud welding positioning device, accurate positioning of studs can be guaranteed, welding quality is guaranteed, meanwhile, welding of the studs of different models can be achieved, overall dismounting and replacement of the positioning device are reduced, production efficiency is improved, and the stud welding positioning device is particularly suitable for completing stud welding through a spot welding robot.

Description

Technical Field

[0001] The utility model relates to the technical field of stud welding, in particular to a stud welding positioning device. Background Art

[0002] Stud welding is a method of locally heating the weldment by placing one end of the stud in contact with the surface of a plate or pipe through resistance welding, using the resistance heat generated by the current passing through the weldment and the contact point as a heat source, and applying pressure for welding. At present, stud welding is mostly manual stud welding. When the workpiece needs to weld studs of different types at the same station, it is necessary to match the corresponding welding machine and stud welding gun for use, resulting in more equipment investment, high cost, low efficiency, and poor welding stability and consistency. Since the principle of stud welding is the same as that of resistance spot welding, it is possible to consider using a spot welding robot to complete stud welding. The spot welding robot can automatically correct the stud welding parameters through the welding adaptive group control function of the workstation and match the database, as well as automatically store, monitor, alarm, and trace the welding parameters and welding quality of each stud, improve the welding quality of the stud, improve production efficiency, and reduce equipment investment. However, when using spot welding robots for stud welding, there is a lack of corresponding stud welding positioning devices. The positioning devices of traditional manual stud welding can usually only meet the welding needs of specific models of studs. When welding studs of different models (stud diameter and length), different positioning devices need to be replaced as a whole. The production efficiency of spot welding robots needs to be improved, and frequent disassembly and replacement are prone to position deviations, which requires re-debugging the program, affecting production efficiency.

[0003] Therefore, there is an urgent need to develop and design a positioning device that can be used for spot welding robots to complete stud welding. It is required that by adopting this positioning device, the accurate positioning of the stud can be guaranteed, the welding quality can be guaranteed, and at the same time, it is conducive to the welding of studs of different models, reducing the overall disassembly and replacement of the positioning device and improving production efficiency. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a stud welding positioning device. By adopting this positioning device, the accurate positioning of the stud can be guaranteed, the welding quality can be guaranteed, and at the same time, it is conducive to the welding of studs of different models, reducing the overall disassembly and replacement of the positioning device, and improving production efficiency. It is particularly suitable for completing stud welding by a spot welding robot.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stud welding positioning device, comprising: a base; a conductive rod, which is arranged on the base in a manner that can be driven to move along its own axial direction; a positioning sleeve, which is detachably sleeved on the end of the conductive rod; the positioning sleeve is provided with a positioning hole for placing the stud to be welded, the positioning hole axially passes through the positioning sleeve and allows one end of the stud to be welded to abut against the top end surface of the conductive rod, and the positioning sleeve is provided with a limit sleeve for positioning its own axial position on the conductive rod.

[0006] Furthermore, a guide hole is provided on the base, an axially movable insulating guide sleeve is provided in the guide hole, and the conductive rod fixing sleeve is provided in the insulating guide sleeve.

[0007] Furthermore, the bottom of the insulating guide sleeve has a first limiting portion, and the outer sleeve of the insulating guide sleeve is provided with a compression spring, and two ends of the compression spring are respectively abutted against the base and the first limiting portion to provide a moving reset force for the insulating guide sleeve.

[0008] Furthermore, the bottom of the conductive rod has a second limiting portion, and the conductive rod outer sleeve is provided with a threaded sleeve for connecting the insulating guide sleeve and the conductive rod as a whole, one end of the insulating guide sleeve abuts against the second limiting portion, and the other end is locked and fixed by the threaded sleeve.

[0009] Furthermore, an anti-loosening gasket is provided between the threaded sleeve and the insulating guide sleeve.

[0010] Furthermore, the conductive rod, positioning sleeve, threaded sleeve and anti-loosening gasket are all made of chromium-zirconium copper.

[0011] Furthermore, the positioning sleeve is sleeved on the outer side of the end of the conductive rod and is threadedly connected to the conductive rod.

[0012] Furthermore, the center hole of the limiting sleeve is aligned with the positioning hole, and the bottom of the limiting sleeve abuts against the top end surface of the conductive rod, and the top of the limiting sleeve abuts against the positioning sleeve.

[0013] Furthermore, the limiting sleeve is an insulating sleeve.

[0014] Furthermore, the bottom end surface of the conductive rod is provided with an anti-slip groove.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The stud welding positioning device provided by the utility model can ensure the accurate positioning of the studs, ensure the welding quality, and is conducive to the welding of studs of different models, reduce the overall disassembly and replacement of the positioning device, and improve the production efficiency, and is particularly suitable for completing stud welding by a spot welding robot; specifically, through the cooperation of the base, the positioning sleeve and the conductive rod, the radial and axial effective positioning of the stud to be welded can be completed, the accuracy of the stud welding position is guaranteed, and it is conducive to the automated welding of equipment such as a spot welding robot; for studs of different models (diameters and lengths), there is no need to disassemble and replace the overall positioning device, only the corresponding positioning sleeve and the limit sleeve need to be replaced, and the setting of the limit sleeve can ensure that the positioning sleeve is quickly and accurately installed in place, the installation is convenient and efficient; at the same time, since the relative positions of the base, the conductive rod and other components relative to the welding equipment will not change, it is conducive to reducing errors, reducing the debugging time of the equipment, and improving production efficiency.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional schematic diagram of the utility model

[0019] Figure 2 This is a schematic diagram of the explosion structure of the utility model

[0020] Figure 3 This is a schematic diagram of the use status of the utility model

[0021] Figure markings: 1-base; 101-guide hole; 2-conductive rod; 201-anti-slip groove; 202-second limiting portion; 3-positioning sleeve; 301-positioning hole; 302-limiting sleeve; 4-stud to be welded; 5-insulating guide sleeve; 501-first limiting portion; 6-compression spring; 7-threaded sleeve; 8-anti-loosening gasket; 9-workpiece; 10-moving electrode cap; 11-static electrode cap. DETAILED DESCRIPTION

[0022] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other without conflict.

[0023] See also Figure 1-3 The present embodiment discloses a stud welding positioning device, comprising: a base 1, i.e., a fixed base. During use, the base 1 can be fixedly mounted on a workbench or a welding equipment frame at a welding station, or the base 1 can also be a part of the workbench or the welding equipment frame, and the base 1 maintains a predetermined position unchanged; for the convenience of processing, the base 1 is preferably an independent mounting block, and the mounting block is designed with bolt holes, and the mounting block is fixedly mounted by bolts; a conductive rod 2 is arranged on the base 1 in a manner that it can be driven to move along its own axial direction. The conductive rod 2 is used for current transmission during welding. During use, the conductive rod 2 can be driven by a welding device (such as an electrode cap of a resistance spot welding robot) to move along its own axial direction. ); the positioning sleeve 3 is detachably sleeved on the end of the conductive rod 2. Specifically, the positioning sleeve 3 is connected to the conductive rod 2 through a threaded sleeve to achieve detachable connection; the positioning sleeve 3 is provided with a positioning hole 301 for placing the stud 4 to be welded, the positioning hole 301 axially passes through the positioning sleeve 3 and allows one end of the stud 4 to be welded to abut against the top end surface of the conductive rod 2, and the positioning sleeve 3 is sleeved with a limiting sleeve 302 for positioning its own axial position on the conductive rod 2, so that the current can be transferred between the conductive rod 2 and the stud 4 to be welded, and the welding function can be achieved. By setting the limiting sleeve 302, it can be ensured that when the positioning sleeve 3 is replaced, the positioning sleeve 3 is quickly and accurately installed in place;

[0024] In the above structural design, the cooperation of the base 1, the positioning sleeve 3 and the conductive rod 2 can effectively position the stud 4 to be welded in the radial and axial directions, prevent the stud 4 to be welded from being skewed, ensure the accuracy of the stud welding position, ensure the welding quality, and facilitate automated welding equipment (such as spot welding robots, etc.) to complete automated welding; for studs of different models (diameters and lengths), there is no need to disassemble and replace the overall positioning device, only the corresponding positioning sleeve 3 and the limiting sleeve 302 need to be replaced (wherein the positioning hole 301 matches the stud diameter, and changing the length of different limiting sleeves 302 can change the axial position of the positioning sleeve 3 on the conductive rod 2, thereby adapting to the positioning of studs of different lengths), and the setting of the limiting sleeve can ensure that the positioning sleeve is installed quickly and accurately, and the installation is convenient and efficient; at the same time, since the relative positions of the base 1, the conductive rod 2 and other components relative to the welding equipment will not change, it is beneficial to reduce errors, reduce the debugging time of the equipment, and improve production efficiency.

[0025] In this embodiment, a guide hole 101 is provided on the base 1, and an axially movable insulating guide sleeve 5 is provided in the guide hole 101, and the conductive rod 2 is fixedly sleeved in the insulating guide sleeve 5; the fixing method of the conductive rod 2 and the insulating guide sleeve 5 is not limited here, and can be an interference fit or a threaded connection, etc.; the insulating guide sleeve 5 can be made of a plastic material with good insulation, etc.; it can be understood that during use, it is necessary to ensure that the current of the conductive rod 2 cannot be transmitted to the workbench or the welding equipment frame through the base 1, so in this structural design, by designing an insulating guide sleeve 5 on the base 1, the current of the conductive rod 2 can be effectively prevented from being transmitted to the base 1, and the base 1 itself does not need to use insulating materials, and can use materials such as steel with good strength and relatively low price, which is beneficial to reducing the manufacturing cost; after the insulating guide sleeve 5 and the conductive rod 2 are fixed as one, the conductive rod 2 and the insulating guide sleeve 5 can move together in the guide hole 101, and the designed guide hole 101 is conducive to realizing the axial movement of the conductive rod 2, and the structure is simple.

[0026] In this embodiment, the bottom of the insulating guide sleeve 5 has a first limiting portion 501, and the outer sleeve of the insulating guide sleeve 5 is provided with a compression spring 6, and the two ends of the compression spring 6 are respectively abutted on the base 1 and the first limiting portion, so as to provide a moving reset force for the insulating guide sleeve 5; specifically, the first limiting portion 501 here is preferably an annular flange structure; by designing the compression spring 6 for reset, it is beneficial to automatically reset the insulating guide sleeve 5 after welding is completed, and compared with relying solely on its own gravity to fall, it can effectively reduce the occurrence of sticking phenomenon; at the same time, by designing the compression spring 6, it is beneficial to provide a buffer when the electrode rod 2 is moved under pressure, so as to avoid the rigid impact of the stud 4 to be welded on the workpiece 9, thereby improving the reliability of use.

[0027] In this embodiment, the bottom of the conductive rod 2 has a second limiting portion 202, and the outer sleeve of the conductive rod 2 is provided with a threaded sleeve 7 for connecting the insulating guide sleeve 5 and the conductive rod 2 as a whole. One end of the insulating guide sleeve 5 abuts against the second limiting portion, and the other end is locked and fixed by the threaded sleeve 7; specifically, the threaded sleeve 7 is a nut, and the second limiting portion is an annular flange structure; in this structural design, the insulating guide sleeve 5 and the conductive rod 2 are fixed by the threaded sleeve 7, the structure is simple, and the assemblability is good, which is conducive to the assembly of the insulating guide sleeve 5, the conductive rod 2 and the base 1, and can effectively prevent the insulating guide sleeve 5 and the conductive rod 2 from falling off the base 1 during use.

[0028] In this embodiment, an anti-loosening gasket 8 is provided between the threaded sleeve 7 and the insulating guide sleeve 5; the anti-loosening gasket 8 can effectively prevent the threaded sleeve 7 from loosening during use, which is beneficial to further improve the connection reliability and improve the overall reliability of use.

[0029] In this embodiment, the conductive rod 2, the positioning sleeve 3, the threaded sleeve 7 and the anti-loosening gasket 8 are all made of chromium-zirconium copper; chromium-zirconium copper has good electrical conductivity, thermal conductivity, high hardness, wear resistance, explosion resistance, crack resistance and high softening temperature, less electrode loss during welding, fast welding speed, which is conducive to further improving the welding quality; it can be understood that when power is turned on, the bottom end of the anti-loosening gasket 8 will be away from the base 1, so it will not transfer electricity to the base 1.

[0030] In this embodiment, the positioning sleeve 3 is sleeved on the outer side of the end of the conductive rod 2 and is threadedly connected to the conductive rod 2; a threaded connection structure is adopted, which has a simple structure and is easy to disassemble and replace; the outer sleeve of the positioning sleeve 3 is arranged to reserve sufficient layout margin for the positioning hole 301, which is conducive to the compact design of the overall size and the lightweight design.

[0031] In this embodiment, the center hole of the limit sleeve 302 is aligned with the positioning hole 301, and the bottom of the limit sleeve 302 abuts against the top end surface of the conductive rod 2, and the top of the limit sleeve 302 abuts on the positioning sleeve 3; specifically, the positioning sleeve 3 is preferably sleeved in the positioning sleeve 3 with a small gap fit. Since the bottom of the adjusting sleeve 302 abuts against the top end surface of the conductive rod 2, the axial position of the positioning sleeve 3 on the conductive rod 2 can be accurately located. Of course, the tightening effect of the adjusting sleeve 302 can also ensure the locking of the positioning sleeve 3 and the conductive rod 2 to avoid loosening of the positioning sleeve 3. The structure has good compactness.

[0032] In this embodiment, the limiting sleeve 302 is an insulating sleeve, which can be a plastic sleeve or a ceramic sleeve. The insulating sleeve is used to reduce electrode loss and improve welding quality.

[0033] In this embodiment, the bottom end surface of the conductive rod 2 is provided with an anti-slip groove 201; by designing the anti-slip groove 201, it is helpful to prevent the conductive rod 2 from deviating when the welding equipment applies pressure to push it, thereby improving the safety and reliability of use. For example, when a resistance spot welding robot is used for welding, the electrode cap of the resistance spot welding robot can abut against the anti-slip groove 201.

[0034] The above-mentioned stud welding positioning device can be implemented according to the following process:

[0035] The base 1 of the stud welding positioning device is installed at the set position of the welding station; then the corresponding stud 4 to be welded is inserted above the positioning sleeve 3; then the workpiece 9 is clamped and moved into place; then the static electrode cap 11 of the welding equipment is attached to the bottom of the conductive rod 2, and the conductive rod 2 is pushed to drive the stud 4 to be welded to contact the workpiece 9; then, the dynamic electrode cap 10 of the welding equipment starts to apply pressure; then power is turned on, and under the action of the welding current and pressure, the contact point between the stud 4 to be welded and the workpiece 4 generates heat until it melts, and finally a firm connection is formed on the surface of the workpiece.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A stud welding positioning device, characterized in that: include: Base (1); The conductive rod (2) is arranged on the base (1) in a manner that it can be driven to move along its own axial direction; A positioning sleeve (3) is detachably sleeved on the end of the conductive rod (2); The positioning sleeve (3) is provided with a positioning hole (301) for placing the stud (4) to be welded, the positioning hole (301) axially passes through the positioning sleeve (3) and enables one end of the stud (4) to be welded to abut against the top end surface of the conductive rod (2), and a limiting sleeve (302) is provided inside the positioning sleeve (3) for locating its own axial position on the conductive rod (2).

2. The stud welding positioning device according to claim 1, characterized in that: The base (1) is provided with a guide hole (101), an axially movable insulating guide sleeve (5) is provided in the guide hole (101), and the conductive rod (2) is fixedly sleeved in the insulating guide sleeve (5).

3. The stud welding positioning device according to claim 2, characterized in that: The bottom of the insulating guide sleeve (5) has a first limiting portion (501), and the outer sleeve of the insulating guide sleeve (5) is provided with a compression spring (6), and the two ends of the compression spring (6) are respectively abutted against the base (1) and the first limiting portion, so as to provide a moving reset force for the insulating guide sleeve (5).

4. The stud welding positioning device according to claim 3, characterized in that: The bottom of the conductive rod (2) is provided with a second limiting portion (202); the outer sleeve of the conductive rod (2) is provided with a threaded sleeve (7) for connecting the insulating guide sleeve (5) and the conductive rod (2) as a whole; one end of the insulating guide sleeve (5) abuts against the second limiting portion, and the other end is locked and fixed by the threaded sleeve (7).

5. The stud welding positioning device according to claim 4, characterized in that: An anti-loosening gasket (8) is provided between the threaded sleeve (7) and the insulating guide sleeve (5).

6. The stud welding positioning device according to claim 5, characterized in that: The conductive rod (2), the positioning sleeve (3), the threaded sleeve (7) and the anti-loosening gasket (8) are all made of chromium-zirconium copper.

7. The stud welding positioning device according to claim 1, characterized in that: The positioning sleeve (3) is sleeved on the outside of the end of the conductive rod (2) and is threadedly connected to the conductive rod (2).

8. The stud welding positioning device according to claim 7, characterized in that: The center hole of the limiting sleeve (302) is aligned with the positioning hole (301), and the bottom of the limiting sleeve (302) abuts against the top surface of the conductive rod (2), and the top of the limiting sleeve (302) abuts against the positioning sleeve (3).

9. The stud welding positioning device according to claim 8, characterized in that: The limiting sleeve (302) is an insulating sleeve.

10. The stud welding positioning device according to claim 1, characterized in that: The bottom end surface of the conductive rod (2) is provided with an anti-slip groove (201).

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