CN219503923U

CN219503923U - Projection welding electrode splash-proof mechanism

Info

Publication number: CN219503923U
Application number: CN202320371434.7U
Authority: CN
Inventors: 肖敏达; 张兢; 梁光玉; 于天洋
Original assignee: Changsha Xinlian Automotive Parts Co ltd
Current assignee: Changsha Xinlian Automotive Parts Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-08-11
Anticipated expiration: 2033-03-02

Abstract

The utility model belongs to the technical field of projection welding, in particular to a projection welding electrode splash-proof mechanism, which aims at the problems that the existing lower electrode cap provided with a locating pin is worn, and the locating pin protrudes out of the height of a nut when the subsequent nut is placed on the lower electrode cap again, so that contact with an upper electrode is possibly caused, and problems of welding deviation and welding slag occur; the connecting assembly is arranged between the electrode rod body and the upper electrode cap and used for connecting the electrode rod body and the upper electrode cap; the lower electrode cap is arranged on the lower side of the upper electrode cap, the positioning pin is fixedly connected in the lower electrode cap, and the surface of the positioning pin is sequentially sleeved with a mounting plate and a nut from bottom to top; the sinking expansion groove is arranged at the bottom end of the upper electrode cap, and is arranged at the upper side of the positioning pin and used for accommodating the positioning pin; the problems of nut offset holes and welding slag splashing caused by mismatching of the positioning pin and the upper electrode are reduced.

Description

Projection welding electrode splash-proof mechanism

Technical Field

The utility model relates to the technical field of projection welding, in particular to a projection welding electrode splash-proof mechanism.

Background

Projection welding, which is a resistance welding method for forming welding at contact points by pre-processing one or more protruding points on the joint surface of a workpiece, enabling the protruding points to be in contact with the surface of another workpiece, electrifying and heating, then collapsing, is mainly used for the plate with the thickness of about 0.5-4 mm, and is widely applied to the automobile part manufacturing industry along with the development of the automobile industry, and is derived as a nut projection welding mechanism along with the continuous generation of projection welding.

At present, the nut projection welding mechanism does not consider the problems of welding deviation and welding slag caused by contact with an upper electrode because the positioning pin protrudes out of the height of the nut when the subsequent nut is placed on the lower electrode cap after the lower electrode cap provided with the positioning pin is worn.

In order to solve the problems, the utility model provides a projection welding electrode splash-proof mechanism.

Disclosure of Invention

The utility model provides a projection welding electrode splash-proof mechanism, which solves the defects that in the prior art, after a lower electrode cap provided with a locating pin is worn, the locating pin protrudes out of the height of a nut when a subsequent nut is placed on the lower electrode cap again, and the problems of welding deviation and welding slag, which occur when the locating pin is contacted with an upper electrode, are possibly caused.

The utility model provides the following technical scheme:

the projection welding electrode splash-proof mechanism comprises an electrode rod body and an upper electrode cap; the connecting assembly is arranged between the electrode rod body and the upper electrode cap and used for connecting the electrode rod body and the upper electrode cap; the lower electrode cap is arranged on the lower side of the upper electrode cap, the positioning pin is fixedly connected in the lower electrode cap, and the surface of the positioning pin is sequentially sleeved with a mounting plate and a nut from bottom to top; the sinking expansion groove is arranged at the bottom end of the upper electrode cap, the sinking expansion groove is arranged at the upper side of the locating pin and used for accommodating the locating pin, and the locating pin is matched with the sinking expansion groove.

In one possible design, the radius of the undercut pocket is greater than the radius of the locating pin.

In one possible design, the connection assembly includes a receiving groove formed in the electrode rod body, an external thread is formed on the surface of the upper electrode cap, an internal thread is formed in the receiving groove, and the upper electrode cap is in threaded connection with the receiving groove.

In one possible design, the top end of the upper electrode cap is provided with a vent slot.

In one possible embodiment, the electrode rod body is provided with a cooling channel for cooling.

In one possible design, the upper electrode cap is made of chromium zirconium copper.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.

According to the technical scheme, the sunk bottom is arranged at the center of the upper electrode of the nut projection welding machine, and when the lower electrode cap provided with the locating pin is worn, the height part of the locating pin protruding out of the nut can enter the sunk bottom at the center of the upper electrode, so that the problems of nut offset holes and welding slag splashing caused by mismatching of the locating pin and the upper electrode are reduced.

Drawings

FIG. 1 is a front perspective view of a projection welding electrode splash guard provided by an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a projection welding electrode splash guard provided by an embodiment of the present utility model;

FIG. 3 is a first partial perspective view of a projection welding electrode splash guard mechanism provided by an embodiment of the present utility model;

FIG. 4 is a second partial perspective view of a projection welding electrode splash guard mechanism provided by an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a conventional upper electrode that is not countersunk and cannot be attached to a nut.

Reference numerals:

1. an electrode rod body; 2. an electrode cap is arranged; 3. a receiving groove; 4. a vent groove; 5. a mounting plate; 6. a nut; 7. a lower electrode cap; 8. a positioning pin; 9. a cooling flow passage; 10. a sinking bottom expansion groove.

Detailed Description

Embodiments of the present utility model will be described below with reference to the accompanying drawings in the embodiments of the present utility model.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled" and "mounted" should be interpreted broadly, and for example, "coupled" may or may not be detachably coupled; may be directly connected or indirectly connected through an intermediate medium. In addition, "communication" may be direct communication or may be indirect communication through an intermediary. Wherein, "fixed" means that the relative positional relationship is not changed after being connected to each other. References to orientation terms, such as "inner", "outer", "top", "bottom", etc., in the embodiments of the present utility model are merely to refer to the orientation of the drawings and, therefore, the use of orientation terms is intended to better and more clearly illustrate and understand the embodiments of the present utility model, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the embodiments of the present utility model.

In embodiments of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the embodiment of the present utility model, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the utility model. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

Example 1

Referring to fig. 1 to 4, the projection welding electrode splash prevention mechanism comprises an electrode rod body 1 and an upper electrode cap 2; the connecting component is arranged between the electrode rod body 1 and the upper electrode cap 2 and is used for connecting the electrode rod body 1 and the upper electrode cap 2; the lower electrode cap 7 and the positioning pin 8, the lower electrode cap 7 is arranged at the lower side of the upper electrode cap 2, the positioning pin 8 is fixedly connected in the lower electrode cap 7, and the surface of the positioning pin 8 is sequentially sleeved with the mounting plate 5 and the nut 6 from bottom to top; the sinking expansion groove 10 is formed in the bottom end of the upper electrode cap 2, the sinking expansion groove 10 is formed in the upper side of the locating pin 8 and used for accommodating the locating pin 8, and the locating pin 8 is matched with the sinking expansion groove 10.

The technical scheme can achieve the technical effects that the bottom is arranged at the center of the upper electrode of the nut projection welding machine, when the lower electrode cap 7 provided with the locating pin 8 is worn, the height part of the locating pin 8 protruding out of the nut 6 can enter the bottom at the center of the upper electrode, so that the problems of deviation hole of the nut 6 and welding slag splashing caused by mismatching of the locating pin 8 and the upper electrode are reduced;

the problems of welding deviation and welding slag are prevented because the motor cannot be pressed tightly on the mounting plate 5 and the nut 6 due to the protrusion of the positioning pin 8 as shown in fig. 5 and the upper electrode without the bottom are not arranged.

Referring to fig. 2-4, the connection assembly includes a receiving groove 3 formed in the electrode rod body 1, an external thread is formed on the surface of the upper electrode cap 2, an internal thread is formed in the receiving groove 3, and the upper electrode cap 2 is in threaded connection with the receiving groove 3.

The technical scheme can achieve the technical effect that the upper electrode cap 2 can be taken down for replacement by screwing the upper electrode cap 2.

Example 2

According to the technical scheme, the sinking bottom is arranged at the center of the upper electrode of the nut projection welding machine, when the lower electrode cap 7 provided with the locating pin 8 is worn, the height part of the locating pin 8 protruding out of the nut 6 can enter the sinking bottom at the center of the upper electrode, and the technical effects of the problems of deviation hole of the nut 6 and welding slag splashing caused by mismatching of the locating pin 8 and the upper electrode are reduced.

Referring to fig. 2, the radius of the countersunk expansion groove 10 is larger than the radius of the locating pin 8.

The technical scheme can achieve the technical effect that friction can not be generated between the locating pin 8 and the inner wall of the sinking and expanding groove 10 when the locating pin enters the sinking and expanding groove 10.

Referring to fig. 4, the upper electrode cap 2 is provided with a vent groove 4 at the top end thereof.

The technical scheme can achieve the technical effects of increasing the contact area between the upper electrode cap 2 and the outside and increasing the heat dissipation efficiency of the upper electrode cap 2.

Referring to fig. 2, a cooling flow passage 9 for cooling is provided in the electrode rod body 1.

According to the technical scheme, cooling water is introduced into the cooling flow channel 9 in the welding process, so that the rapid heat dissipation of the upper electrode cap 2 on the sleeve can be realized, the temperature of the upper electrode cap 2 on the sleeve is reduced, and the service life of the overall upper electrode rod is prolonged.

The upper electrode cap 2 is made of chromium zirconium copper.

The working principle and the using flow of the technical scheme are as follows: when the lower electrode cap 7 provided with the positioning pin 8 is worn, and then the nut 6 is put on the upper side of the lower electrode cap 7 to be sleeved on the surface of the positioning pin 8, the upper electrode cap 2 is started to downwards compress the nut 6 and the mounting plate 5 and weld, and the height part of the positioning pin 8 protruding out of the nut 6 can enter the bottom at the center of the upper electrode, so that the normal welding of the upper electrode cap 2 is not affected.

The present utility model is not limited to the above embodiments, and any person skilled in the art can easily think about the changes or substitutions within the technical scope of the present utility model, and the changes or substitutions are intended to be covered by the scope of the present utility model; embodiments of the utility model and features of the embodiments may be combined with each other without conflict. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. The utility model provides a projection welding electrode prevents mechanism that splashes which characterized in that includes:

an electrode rod body (1) and an upper electrode cap (2);

the connecting assembly is arranged between the electrode rod body (1) and the upper electrode cap (2) and is used for connecting the electrode rod body (1) with the upper electrode cap (2);

the electrode comprises a lower electrode cap (7) and a positioning pin (8), wherein the lower electrode cap (7) is arranged on the lower side of the upper electrode cap (2), the positioning pin (8) is fixedly connected in the lower electrode cap (7), and a mounting plate (5) and a nut (6) are sequentially sleeved on the surface of the positioning pin (8) from bottom to top;

the sinking expansion groove (10) is formed in the bottom end of the upper electrode cap (2), the sinking expansion groove (10) is formed in the upper side of the locating pin (8) and used for accommodating the locating pin (8), and the locating pin (8) is matched with the sinking expansion groove (10).

2. Projection welding electrode splash prevention mechanism according to claim 1, characterized in that the radius of the undercut expansion groove (10) is larger than the radius of the locating pin (8).

3. The projection welding electrode splash prevention mechanism according to claim 1, wherein the connecting assembly comprises a containing groove (3) formed in the electrode rod body (1), external threads are formed on the surface of the upper electrode cap (2), internal threads are formed in the containing groove (3), and the upper electrode cap (2) is in threaded connection with the containing groove (3).

4. A projection welding electrode splash prevention mechanism according to any one of claims 1 to 3, characterized in that the top end of the upper electrode cap (2) is provided with a vent groove (4).

5. Projection welding electrode splash prevention mechanism according to claim 1, characterized in that a cooling flow channel (9) for cooling is arranged in the electrode rod body (1).

6. Projection welding electrode splash prevention mechanism according to claim 4, characterized in that the upper electrode cap (2) is made of chromium zirconium copper.