CN210435530U - Projection welding water-cooling upper electrode - Google Patents
Projection welding water-cooling upper electrode Download PDFInfo
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- CN210435530U CN210435530U CN201921018978.5U CN201921018978U CN210435530U CN 210435530 U CN210435530 U CN 210435530U CN 201921018978 U CN201921018978 U CN 201921018978U CN 210435530 U CN210435530 U CN 210435530U
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Abstract
The utility model discloses a projection welding water-cooling upper electrode, including electrode rod and electrode tip, the electrode rod is L shape, and this electrode rod includes vertical pole and transverse bar, vertical pole lower extreme with the one end of transverse bar links to each other the vertical electrode hole that is equipped with of the other end of transverse bar, this electrode downthehole being equipped with the electrode tip, the electrode tip with be equipped with electrode tip cooling runner between the electrode hole be equipped with electrode rod cooling runner on the transverse bar. Has the advantages that: electrode tip cooling channel cools down the electrode hole end of electrode tip and transverse bar, and electrode bar cooling channel cools down the transverse bar, and the cooling effect is good, and current projection welding electrode has reduced the welding defective rate, has prolonged the interval of repairment of electrode tip and life.
Description
Technical Field
The invention belongs to the field of welding equipment, and particularly relates to a projection welding water-cooling upper electrode.
Background
Projection welding is an electric resistance welding method in which one or more projection points are formed in advance on a joining surface of one workpiece, and the projection points are brought into contact with the surface of another workpiece to be pressed and melted by electric heating, so that the contact points form welding points. The method is a high-efficiency welding method, can be used for replacing arc welding, brazing and snap-in, and is commonly used for nut and bolt welding. The method has high processing speed, has wide projection welding application in the production process of the automobile sheet metal parts, can realize semi-automatic or automatic production, and is particularly suitable for the production of mass workpieces. However, in the process of mass production, because larger heat is generated during welding, the welding frequency is higher, and burrs are generated after welding due to untimely heat dissipation, so that serious hidden quality troubles are caused, on the other hand, the loss of the electrode is increased, and the service life is shortened. Although the existing projection welding equipment adopts an air cooling or water cooling mode, the cooling effect still needs to be improved.
Disclosure of Invention
In view of the above, the present invention provides a projection welding water-cooled upper electrode.
The technical scheme is as follows:
a projection welding water-cooling upper electrode comprises an electrode rod and an electrode tip, and is characterized in that the electrode rod is L-shaped and comprises a vertical rod and a transverse rod, the lower end of the vertical rod is connected with one end of the transverse rod, an electrode hole is vertically formed in the other end of the transverse rod, and the electrode tip is arranged in the electrode hole;
an electrode tip cooling flow passage is arranged between the electrode tip and the electrode hole;
and an electrode rod cooling flow channel is arranged on the transverse rod.
Design more than adopting, electrode tip cooling channel cools down the electrode hole end of electrode tip and transverse bar, and electrode bar cooling channel cools down the transverse bar, and the cooling effect is good, and more current projection welding electrode has reduced the welding defective rate, has prolonged the interval period of finishing and the life of electrode tip.
As a preferred technical scheme, the electrode tip cooling flow channel comprises a cooling water flow channel, the cooling water flow channel is arranged around the electrode tip, the cooling water flow channel is connected with a cooling water inlet and a cooling water outlet, and the cooling water inlet and the cooling water outlet are respectively arranged on the transverse rod.
Design more than adopting, the cooling water runner sets up around the electrode tip, but the hoop is evenly cooled down.
As a preferred technical scheme, the outer wall of the electrode head is annularly provided with a cooling water tank, and the cooling water tank and the inner wall of the corresponding electrode hole form the cooling water flow channel;
the transverse rod is provided with the cooling water inlet and the cooling water outlet corresponding to the cooling water tank respectively.
By adopting the design, the notch of the cooling water tank is sealed by the inner wall of the electrode hole to form a cooling water channel, the cooling water tank is convenient to process, the cooling water cools the electrode tip from the tank bottom and the tank wall of the cooling water tank, and the contact area is large.
As a preferred technical scheme, the electrode hole comprises a circular truncated cone hole section and a cylindrical hole section which are axially connected up and down, the small diameter end of the circular truncated cone hole section faces upwards, the large diameter end of the circular truncated cone hole section faces downwards, and the aperture of the large diameter end of the circular truncated cone hole section is equal to that of the cylindrical hole section;
the electrode head comprises a circular truncated cone section and a cylindrical section which are axially connected from top to bottom, the shape of the circular truncated cone section is matched with that of the circular truncated cone hole section, and the cylindrical section extends out of the electrode hole;
the cooling water tank is arranged in the middle of the outer wall of the circular platform section.
By adopting the design, the electrode tip and the electrode hole are in taper connection, the replacement is convenient, the cooling water tank is arranged on the outer wall of the round platform end, and the inner wall of the electrode hole is well sealed with the cooling water tank.
Preferably, the cooling water inlet and the cooling water outlet are respectively arranged on two sides of the electrode head in an opposite mode.
By adopting the design, the cooling water flow channel is divided into two sections connected between the cooling water inlet and the cooling water outlet, and the cooling water flows through the two sides of the electrode tips simultaneously, so that the cooling effect is good.
As a preferred technical scheme, the electrode rod cooling flow channel comprises a water inlet channel and a water outlet channel which are arranged along the length direction of the transverse rod, the outer end of the water inlet channel and the outer end of the water outlet channel penetrate out of the end, connected with the vertical rod, of the transverse rod, a return channel is connected between the inner end of the water inlet channel and the inner end of the water outlet channel, and the return channel is close to the electrode hole.
By adopting the design, the transverse rod part can be integrally cooled.
Compared with the prior art, the invention has the beneficial effects that: electrode tip cooling channel cools down the electrode hole end of electrode tip and transverse bar, and electrode bar cooling channel cools down the transverse bar, and the cooling effect is good, and current projection welding electrode has reduced the welding defective rate, has prolonged the interval of repairment of electrode tip and life.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 1;
FIG. 4 is a cross-sectional view B-B of FIG. 1;
fig. 5 is a schematic structural view of the electrode head.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1 and 2, a projection welding water-cooling upper electrode comprises an electrode rod 1 and an electrode tip 2, wherein the electrode rod 1 is L-shaped, the electrode rod 1 comprises a vertical rod 11 and a transverse rod 12, the lower end of the vertical rod 11 is connected with one end of the transverse rod 12, an electrode hole is vertically formed in the other end of the transverse rod 12, and the electrode tip 2 is arranged in the electrode hole.
An electrode rod cooling flow channel 13 is arranged on the transverse rod 12. The electrode rod cooling flow channel 13 comprises a water inlet channel 13a and a water outlet channel 13b which are arranged along the length direction of the transverse rod 12, the outer end of the water inlet channel 13a and the outer end of the water outlet channel 13b penetrate out of the end, connected with the vertical rod 11, of the transverse rod 12, a return channel 13c is connected between the inner end of the water inlet channel 13a and the inner end of the water outlet channel 13b, and the return channel 13c is close to the electrode hole. And cooling water is introduced into the electrode rod cooling flow channel 13 to cool the electrode rod 1.
As shown in fig. 3 and 4, an electrode tip cooling flow passage 14 is provided between the electrode tip 2 and the electrode hole. The electrode tip cooling flow passage 14 includes a cooling water flow passage 14a, the cooling water flow passage 14a is provided around the electrode tip 2, the cooling water flow passage 14a is connected with a cooling water inlet 14b and a cooling water outlet 14c, and the cooling water inlet 14b and the cooling water outlet 14c are respectively opened on the transverse rod 12.
Specifically, the outer wall of the electrode head 2 is provided with a cooling water tank 22 in a circumferential direction. After the electrode tip 2 is mounted in the electrode hole, the cooling water channel 14a is formed by the cooling water tank 22 and the inner wall of the electrode hole corresponding thereto. The cooling water inlet 14b and the cooling water outlet 14c are provided in the cross bar 12 corresponding to the cooling water tank 22, respectively.
The electrode hole comprises a circular truncated cone hole section and a cylindrical hole section which are axially connected from top to bottom, the small-diameter end of the circular truncated cone hole section faces upwards, the large-diameter end of the circular truncated cone hole section faces downwards, and the aperture of the large-diameter end of the circular truncated cone hole section is equal to that of the cylindrical hole section. The electrode head 2 is in taper connection with the electrode hole. As shown in fig. 5, the electrode head 2 includes a truncated cone section 21 and a cylindrical section 23 which are axially connected from top to bottom, the shape of the truncated cone section 21 is adapted to the shape of the truncated cone hole section, and the cylindrical section 23 extends out of the electrode hole. The cooling water tank 22 is arranged in the middle of the outer wall of the circular platform section 21.
The cooling water inlet 14b and the cooling water outlet 14c are respectively oppositely arranged at two sides of the electrode head 2, so that the cooling water channel 14a is divided into two channel sections connected between the cooling water inlet 14b and the cooling water outlet 14c, and the two channel sections respectively cool the electrode head 2 from two sides thereof.
The inner diameters of the cooling water inlet 14b and the cooling water outlet 14c are equal to the width of the cooling water tank 22, so that water flow is facilitated. In this embodiment, the outer diameter of the upper end of the circular truncated cone section 21 is 16mm, the outer diameter of the lower end is 20mm, the axial height is 30mm, and the width of the cooling water tank 22 is 6 mm.
By adopting the projection welding upper electrode of the embodiment, the welding reject ratio of the electrode in the existing cooling mode is reduced to below 2% from 5%, the dressing interval and the service life of the electrode tip 2 are prolonged by more than 1/4, and the welding quality and the production efficiency are improved.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a projection welding water-cooling upper electrode, includes electrode pole (1) and electrode tip (2), its characterized in that: the electrode rod (1) is L-shaped, the electrode rod (1) comprises a vertical rod (11) and a transverse rod (12), the lower end of the vertical rod (11) is connected with one end of the transverse rod (12), an electrode hole is vertically formed in the other end of the transverse rod (12), and the electrode tip (2) is arranged in the electrode hole;
an electrode tip cooling flow channel (14) is arranged between the electrode tip (2) and the electrode hole;
and an electrode rod cooling flow channel (13) is arranged on the transverse rod (12).
2. The projection welding water-cooled upper electrode according to claim 1, characterized in that: the electrode head cooling flow channel (14) comprises a cooling water flow channel (14a), the cooling water flow channel (14a) is arranged around the electrode head (2), the cooling water flow channel (14a) is connected with a cooling water inlet (14b) and a cooling water outlet (14c), and the cooling water inlet (14b) and the cooling water outlet (14c) are respectively arranged on the transverse rod (12).
3. The projection welding water-cooled upper electrode according to claim 2, characterized in that: a cooling water tank (22) is annularly arranged on the outer wall of the electrode tip (2), and the cooling water tank (22) and the inner wall of the corresponding electrode hole form a cooling water flow channel (14 a);
the transverse rod (12) is provided with the cooling water inlet (14b) and the cooling water outlet (14c) corresponding to the cooling water tank (22).
4. The projection welding water-cooled upper electrode according to claim 3, characterized in that: the electrode hole comprises a circular truncated cone hole section and a cylindrical hole section which are axially connected up and down, the small-diameter end of the circular truncated cone hole section faces upwards, the large-diameter end of the circular truncated cone hole section faces downwards, and the aperture of the large-diameter end of the circular truncated cone hole section is equal to that of the cylindrical hole section;
the electrode head (2) comprises a circular truncated cone section (21) and a cylindrical section (23) which are axially connected from top to bottom, the shape of the circular truncated cone section (21) is adapted to that of the circular truncated cone hole section, and the cylindrical section (23) extends out of the electrode hole;
the middle part of the outer wall of the circular platform section (21) is provided with the cooling water tank (22).
5. The projection welding water-cooled upper electrode according to any one of claims 2 to 4, characterized in that: the cooling water inlet (14b) and the cooling water outlet (14c) are respectively arranged on two sides of the electrode head (2) in an opposite mode.
6. The projection welding water-cooled upper electrode according to claim 1, characterized in that: the electrode rod cooling flow channel (13) comprises a water inlet channel (13a) and a water outlet channel (13b) which are formed along the length direction of the transverse rod (12), the outer end of the water inlet channel (13a) and the outer end of the water outlet channel (13b) penetrate out of one end, connected with the vertical rod (11), of the transverse rod (12), a return channel (13c) is connected between the inner end of the water inlet channel (13a) and the inner end of the water outlet channel (13b), and the return channel (13c) is close to the electrode hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921018978.5U CN210435530U (en) | 2019-07-02 | 2019-07-02 | Projection welding water-cooling upper electrode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921018978.5U CN210435530U (en) | 2019-07-02 | 2019-07-02 | Projection welding water-cooling upper electrode |
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| CN210435530U true CN210435530U (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921018978.5U Active CN210435530U (en) | 2019-07-02 | 2019-07-02 | Projection welding water-cooling upper electrode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101882A (en) * | 2021-11-17 | 2022-03-01 | 东风柳州汽车有限公司 | Electrode structure and spot welding device |
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2019
- 2019-07-02 CN CN201921018978.5U patent/CN210435530U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101882A (en) * | 2021-11-17 | 2022-03-01 | 东风柳州汽车有限公司 | Electrode structure and spot welding device |
| CN114101882B (en) * | 2021-11-17 | 2024-01-30 | 东风柳州汽车有限公司 | Electrode structure and spot welding device |
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