CN212682775U - Projection welding bottom electrode - Google Patents
Projection welding bottom electrode Download PDFInfo
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- CN212682775U CN212682775U CN202021442045.1U CN202021442045U CN212682775U CN 212682775 U CN212682775 U CN 212682775U CN 202021442045 U CN202021442045 U CN 202021442045U CN 212682775 U CN212682775 U CN 212682775U
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Abstract
The utility model provides a projection welding bottom electrode, include: a lower electrode body internally formed as a through-hole, and the lower electrode body includes: the first end connected with the projection welding motor is pressed against the second end of the welding part, and the first end is connected with the second end through a connecting part; the second end is formed into a cylindrical structure, the diameter of the second end is far larger than that of the through hole, and the second end and the side face of the connecting part facing the welding part are formed into a plane; and the positioning pin penetrates through the welding part and is connected with the nut. According to the scheme, the first end is connected with the projection welding motor, the second end is abutted against the welding part, the diameter of the second end is far larger than that of the through hole, the contact area of the lower electrode body and the welding part is increased, and the problems that the contact area of the lower electrode body and the welding part is small, the conductive performance of the lower electrode is influenced, and the welding quality is unstable are solved.
Description
Technical Field
The utility model relates to the field of welding technique, in particular to projection welding bottom electrode.
Background
Some models need to be welded at skylight frame department of car are the square nut of M6, the position at part M6 square nut place is narrow and small, for the realization is to the welding at the M6 square nut of narrow and small position, need make the cylinder diameter of ordinary cylindrical projection welding bottom electrode very little, and the very little bottom electrode of diameter is when the welding, the area of contact of bottom electrode and welding finished piece is little, influence the electric conductive property of bottom electrode, make welding quality unstable, and the bottom electrode is thinner, can lead to the very easy bending and deformation of bottom electrode.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a projection welding bottom electrode for solve when narrow and small position welding, the bottom electrode is little with the area of contact of welding finished piece, problem that welding quality is unstable.
In order to solve the technical problem, an embodiment of the utility model provides a following technical scheme:
the embodiment of the utility model provides a projection welding bottom electrode, include:
a lower electrode body internally formed as a through-hole, and the lower electrode body includes: the first end connected with the projection welding motor is pressed against the second end of the welding part, and the first end is connected with the second end through a connecting part;
the second end is formed into a cylindrical structure, the diameter of the second end is far larger than that of the through hole, and the second end and the side face of the connecting part facing the welding part are formed into a plane;
and the positioning pin penetrates through the welding part and is connected with the nut.
Optionally, the first end is formed in a cylindrical structure, and an outer surface of the first end is provided with an external thread.
Optionally, the connecting part is formed in a cylindrical structure, and the diameter of the first end is larger than that of the connecting part, and the diameter of the second end is larger than that of the connecting part;
wherein the diameter of the second end is greater than the diameter of the first end.
Optionally, the lower electrode body is made of a chromium zirconium copper material.
Optionally, the locating pin comprises a first cone portion, a cylindrical body portion, and a second cone portion;
wherein a cylindrical portion is between the first cone portion and the second cone portion.
Optionally, the diameter of a first end surface of the first cone portion connected with the cylindrical portion is larger than the diameter of a second end surface of the first cone portion away from the cylindrical portion;
the diameter of a third end face, connected with the cylindrical body part, of the second conical body part is smaller than the diameter of a fourth end face, far away from the cylindrical body part, of the second conical body part.
Optionally, the locating pin is connected to the nut through the first cone portion.
The utility model has the advantages that:
the utility model discloses the scheme provides the bottom electrode body, and inside formation is the through-hole, just the bottom electrode body includes: the first end connected with the projection welding motor is pressed against the second end of the welding part, and the first end is connected with the second end through a connecting part; the second end is formed into a cylindrical structure, the diameter of the second end is far larger than that of the through hole, and the second end and the side face of the connecting part facing the welding part are formed into a plane; and the positioning pin penetrates through the welding part and is connected with the nut. The bottom electrode body is connected with the projection welding motor through first end, supports through the second end and presses the welding finished piece, just the diameter of second end is far greater than the diameter of through-hole increases the diameter of second end as far as possible to increase the area of contact of bottom electrode body and welding finished piece, it is little with the area of contact of welding finished piece to solve the bottom electrode body, influences the electric conductive property of bottom electrode, makes the unstable problem of welding quality, also makes the bottom electrode body be difficult for buckling and warping, the second end with the connecting portion orientation the side of welding finished piece forms to the plane, and it is narrow and small also to avoid welding space, leads to the unable welded problem of bottom electrode body.
Drawings
Fig. 1 is a schematic structural diagram of a lower electrode body according to an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a positioning pin according to an embodiment of the present invention.
Description of reference numerals:
1-a lower electrode body; 11-a through hole; 12-a first end; 13-a second end; 14-a connecting portion; 2-positioning pins; 21-a first cone portion; 22-a cylindrical body portion; 23-a second cone portion.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses to when the welding is in narrow and small position, the area of contact of bottom electrode and welding finished piece is little, and the unstable problem of welding quality provides a projection welding bottom electrode.
As shown in fig. 1 and 2, an embodiment of the present invention provides a projection welding bottom electrode, including:
a lower electrode body 1 internally formed as a through hole 11 and including: a first end 12 connected with the projection welding motor is pressed against a second end 13 of a welding part, and the first end 12 is connected with the second end 13 through a connecting part 14;
wherein the second end 13 is formed into a cylindrical structure, the diameter of the second end 13 is much larger than that of the through hole 11, and the second end 13 and the connecting portion 14 are formed into a plane toward the side of the welding part;
and the positioning pin 2 penetrates through the through hole 11, and the positioning pin 2 penetrates through the welding part to be connected with the nut.
It should be noted that the welding part is a plate, when the projection welding lower electrode works, the positioning pin 2 penetrates through the through hole 11, is placed at a corresponding position of the welding part, penetrates through the welding part and is connected with the nut, and on the other surface of the welding part opposite to the nut, the second end 13 of the lower electrode body 1 is pressed against the welding part to perform projection welding.
The positioning pin 2 is connected with an air cylinder and an ejector rod, the ejector rod is driven by the air cylinder, and the positioning pin 2 can penetrate through the through hole 11 and stretch relative to the lower electrode body 1.
The diameter of the second end 13 of lower electrode body 1 is far greater than the diameter of through-hole 11, increase as far as possible with the area of contact of welding finished piece, it is little to solve lower electrode body 1 and welding finished piece's area of contact, influence the electric conductive property of lower electrode, make the unstable problem of welding quality, also make lower electrode body 1 be difficult for buckling and warping, increase of service life, and second end 13 and connecting portion 14 form into the plane towards the side of welding finished piece, it is narrow and small also to avoid welding space, lead to the unable welded problem of lower electrode body.
The first end 12 is formed in a cylindrical structure, and an outer surface of the first end 12 is provided with an external thread.
It should be noted that the outer surface of the first end 12 of the lower electrode body 1 is provided with an external thread structure, so that the lower electrode body 1 can be fixed on a projection welding machine.
The connecting part 14 is formed in a cylindrical structure, the diameter of the first end 12 is larger than that of the connecting part 14, and the diameter of the second end 13 is larger than that of the connecting part 14;
wherein the diameter of the second end 13 is larger than the diameter of the first end 12.
It should be noted that the diameter of the second end 13 is designed to match the projection welding machine, and the diameter of the first end 12 is increased as much as possible within the range in which the lower electrode body 1 can work, so as to increase the contact area with the welded product.
The lower electrode body 1 is made of chromium zirconium copper material.
The lower electrode body 1 is made of chromium zirconium copper, and is easy to process and manufacture.
The locating pin 2 comprises a first conical portion 21, a cylindrical portion 22 and a second conical portion 23;
wherein a cylindrical body portion 22 is located between said first conical portion 21 and said second conical portion 23.
The diameter of a first end face of the first cone part 21 connected with the cylindrical part 22 is larger than the diameter of a second end face of the first cone part 21 far away from the cylindrical part 22;
the diameter of the third end surface of the second cone portion 23 connected to the cylindrical portion 22 is smaller than the diameter of the fourth end surface of the second cone portion 23 away from the cylindrical portion 22.
It should be noted that the positioning pin 2 is connected with the cylinder and the ejector rod through the fourth end surface, and the first cone portion 21 is designed to be a cone structure so as to facilitate the through hole and the welding of the parts, and is connected with the nut.
The positioning pin 2 is connected to the nut by means of the first cone portion 21.
It should be noted that the positioning pin 2 is connected to the nut by passing the first cone portion 21 through the welding member.
The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Claims (7)
1. A projection welded bottom electrode, comprising:
a lower electrode body (1) internally formed as a through hole (11), and including: the first end (12) connected with the projection welding motor is pressed against the second end (13) of the welding part, and the first end (12) is connected with the second end (13) through a connecting part (14);
wherein the second end (13) is formed into a cylindrical structure, the diameter of the second end (13) is far larger than that of the through hole (11), and the second end (13) and the connecting part (14) are formed into a plane towards the side of the welding workpiece;
and the positioning pin (2) penetrates through the through hole (11), and the positioning pin (2) penetrates through the welding part to be connected with the nut.
2. A projection welded lower electrode according to claim 1, characterized in that the first end (12) is formed as a cylindrical structure and that the outer surface of the first end (12) is provided with an external thread.
3. A projection welding lower electrode according to claim 1, characterized in that the connecting portion (14) is formed in a cylindrical structure, and the diameter of the first end (12) is larger than the diameter of the connecting portion (14), and the diameter of the second end (13) is larger than the diameter of the connecting portion (14);
wherein the diameter of the second end (13) is larger than the diameter of the first end (12).
4. A projection welded lower electrode according to claim 1, characterized in that the lower electrode body (1) is made of a chromium zirconium copper material.
5. A projection welded lower electrode according to claim 1, characterized in that the positioning pin (2) comprises a first cone portion (21), a cylindrical body portion (22) and a second cone portion (23);
wherein a cylindrical body portion (22) is between the first cone portion (21) and the second cone portion (23).
6. A projection welded lower electrode according to claim 5, characterized in that the diameter of a first end face of the first cone portion (21) connected to the cylindrical portion (22) is larger than the diameter of a second end face of the first cone portion (21) remote from the cylindrical portion (22);
the diameter of a third end face of the second cone part (23) connected with the cylindrical part (22) is smaller than the diameter of a fourth end face of the second cone part (23) far away from the cylindrical part (22).
7. A projection welded lower electrode according to claim 5, characterized in that the positioning pin (2) is connected to a nut via the first cone portion (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021442045.1U CN212682775U (en) | 2020-07-21 | 2020-07-21 | Projection welding bottom electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021442045.1U CN212682775U (en) | 2020-07-21 | 2020-07-21 | Projection welding bottom electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212682775U true CN212682775U (en) | 2021-03-12 |
Family
ID=74898283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021442045.1U Active CN212682775U (en) | 2020-07-21 | 2020-07-21 | Projection welding bottom electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212682775U (en) |
-
2020
- 2020-07-21 CN CN202021442045.1U patent/CN212682775U/en active Active
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