CN216802067U - Electrode on nut plate welding - Google Patents
Electrode on nut plate welding Download PDFInfo
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- CN216802067U CN216802067U CN202220158456.0U CN202220158456U CN216802067U CN 216802067 U CN216802067 U CN 216802067U CN 202220158456 U CN202220158456 U CN 202220158456U CN 216802067 U CN216802067 U CN 216802067U
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- nut plate
- upper electrode
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- positioning pin
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Abstract
The utility model discloses a welding upper electrode of a nut plate, which comprises a nut plate upper electrode which is detachably arranged on an electrode seat, a workpiece positioning pin which protrudes out of the bottom surface of the nut plate upper electrode, and an adsorption generator which is arranged on the nut plate upper electrode and generates adsorption force on a workpiece. The nut plate is sucked at the bottom of the upper electrode of the nut plate by the aid of an auxiliary device arranged on the upper electrode, and the upper electrode of the nut plate is provided with a positioning piece which is matched with a workpiece for positioning, so that the upper electrode of the nut plate can be accurately positioned, and welding quality is improved.
Description
Technical Field
The utility model relates to a nut plate welding and feeding technology, in particular to a nut plate welding and feeding electrode.
Background
The nut plate is one of the components of the white car body door ring; the structure is a forged part with a threaded hole boss. The structure of the existing door ring is provided with a common nut, and because the requirement of a vehicle body is improved, the nut plate is adopted to replace the common nut to be welded with the door ring.
As shown in fig. 9 and 2, the nut plate has a flat plate 3 as a main body, one side of the flat plate has a boss 2, the boss 2 has a threaded hole 1 in the middle, the other side of the flat plate 3 has 3 protruding points 4, and the flat plate 3 is provided with a small round hole 5 and a large round hole 6. The outer contour of the flat plate 3 is in a symmetrical irregular shape, and bosses 7 are respectively arranged on two sides of the flat plate.
The current conventional process is as follows:
before welding of the nut plate: workers need to take the nut plates out of the material frame one by one, judge the taking-out state of the nut plates and place the nut plates on the surface of the door ring main body part according to the final welded placing posture.
It can also be: workers take out the nut plates in the material frame one by one in advance, judge the taking-out state of the nut plates in advance, arrange the nut plates orderly in sequence, and start welding work after the preparation is finished; workers only need to put the door ring main body parts on the surfaces according to the finally welded placing postures.
When the nut plate is welded: the main body part of the door ring is required to be contacted and attached with the lower electrode, then the nut plate is placed at the position corresponding to the door ring, and the hole on the nut plate is used for positioning; and after the placement, the piston rod of the welding cylinder of the resistance projection welding machine is pushed out, and the upper electrode presses the parts formed by the nut plate and the door ring main body, so that the welding process is completed.
The existing defects are as follows:
the part overall dimension that the door ring constitutes is great, and manual operation is more troublesome to put the work piece, needs to spend more time to place in the position that the bottom electrode corresponds, and long-term work is for the workman intensity of labour great.
The part formed by the door ring has larger overall dimension, occupies larger operation space at the front end of the projection welding machine, and when the nut plate is manually placed in place, the arm has large range of motion, the sight observation position is not convenient, more limb actions need to be completed, and the labor intensity is higher.
The positioning accuracy of the nut plate manually placed on the door ring is poor (the hole of the nut plate is loosely matched with the pin), and the positioning accuracy mainly depends on the operation proficiency and the exactness of workers.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the welding upper electrode of the nut plate, which is accurate in positioning and improves the welding quality.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a welding upper electrode of a nut plate comprises a nut plate upper electrode which is detachably arranged on an electrode seat, a workpiece positioning pin which protrudes out of the bottom surface of the nut plate upper electrode, and an adsorption generator which is arranged on the nut plate upper electrode and generates adsorption force on a workpiece.
As an improvement of the technical scheme of welding the upper electrode on the nut plate, the adsorption generator is a permanent magnet or an electromagnet embedded in the upper electrode of the nut plate.
As an improvement of the technical scheme of welding the upper electrode on the nut plate, the adsorption generator comprises an external negative pressure device and a negative pressure air channel which is communicated with a working port of the negative pressure device and penetrates through the upper electrode on the nut plate, and the negative pressure air channel is opened at the bottom surface of the upper electrode on the nut plate.
As an improvement of the technical scheme of welding the upper electrode on the nut plate, an electrode positioning pin for alignment positioning is arranged between the electrode seat and the upper electrode on the nut plate.
As an improvement of the technical scheme of welding the upper electrode on the nut plate, the number of the electrode positioning pins is two.
As an improvement of the technical scheme of welding the upper electrode on the nut plate, the workpiece positioning pin comprises a screw hole positioning pin for inserting a threaded hole of the nut plate workpiece and a round hole positioning pin for inserting a round hole for positioning.
As an improvement of the technical scheme of welding the upper electrode on the nut plate, the utility model is provided with a abdicating groove for the lug boss to extend into, surrounding the screw hole positioning pin.
The utility model has the beneficial effects that: the auxiliary device is arranged on the upper electrode to generate adsorption force to suck the nut plate at the bottom of the upper electrode of the nut plate, and the positioning piece is arranged on the upper electrode of the nut plate to be matched with a workpiece for positioning, so that the upper electrode for welding the nut plate can be accurately positioned and the welding quality can be improved.
Drawings
FIG. 1 is a schematic side-up perspective view of an electrode strip workpiece on a nut plate for welding according to the present invention.
FIG. 2 is a schematic side-down perspective view of an electrode strip workpiece on a nut plate for welding according to the present invention.
FIG. 3 is a schematic top view of a nut plate with an electrode welded thereon according to the present invention.
Fig. 4 is a sectional view taken along the direction a-a in fig. 3.
Fig. 5 is a sectional view in the direction B-B in fig. 3.
FIG. 6 is a schematic side-down perspective view of a nut plate welded with an upper electrode according to the present invention.
FIG. 7 is a perspective view of a nut plate with a workpiece welded thereon according to a second embodiment of the present invention.
Fig. 8 is a longitudinal sectional structural view of the upper electrode assembly shown in fig. 7.
FIG. 9 is a perspective view of a nutplate workpiece.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 6, the welding upper electrode for a nut plate according to the present invention includes an upper electrode 12 for a nut plate detachably mounted on an electrode holder, a workpiece positioning pin 13 protruding from a bottom surface of the upper electrode 12 for a nut plate, and an adsorption generator provided on the upper electrode 12 for generating an adsorption force to a workpiece. The auxiliary device is arranged on the upper electrode to generate adsorption force to suck the nut plate 15 at the bottom of the nut plate upper electrode 12, and the nut plate upper electrode 12 is provided with the positioning piece to be matched with a workpiece for positioning, so that the nut plate 15 welding upper electrode capable of realizing accurate positioning and improving welding quality can be reduced, the rework rate and the rejection rate are reduced, the production efficiency is improved, and the production cost is reduced.
The adsorption generator is a permanent magnet 21 or an electromagnet embedded in the nut plate upper electrode 12, and adsorbs the metal nut plate 15 through magnetic force, so that the accurate positioning between the nut plate 15 and the nut plate upper electrode 12 is realized, the welding position size precision is further ensured, and the welding quality is ensured.
Or, as shown in fig. 7 and 8, the adsorption generator includes an external negative pressure device 22, and a negative pressure gas channel 23 communicating with a working port of the negative pressure device and penetrating through the upper electrode 12 of the nut plate, and the negative pressure gas channel 23 opens at the bottom surface of the upper electrode 12 of the nut plate, so as to generate a negative pressure adsorption effect on the workpiece, so that the workpiece can be sucked and hung at the bottom surface of the upper electrode 12 of the nut plate, and then welded with a gate ring workpiece stably placed at a precise position on the lower electrode along with the downward movement of the upper electrode 12 of the nut plate, so that the welding butt joint position is relatively precise.
An electrode positioning pin 16 for alignment positioning is arranged between the electrode holder and the nut plate upper electrode 12, so that the worn part nut plate upper electrode 12 can be quickly aligned to a position for positioning and mounting at ordinary times when being replaced.
Further, the number of the electrode positioning pins 16 is two, and the circular positioning pins can be used for accurately positioning the upper electrode 12 of the motherboard.
The workpiece positioning pin 13 comprises a screw hole positioning pin 32 for inserting a threaded hole of the nut plate workpiece 15 and a round hole positioning pin 33 for inserting a round hole to perform positioning, so that the nut plate workpiece 15 can be accurately positioned by using the round positioning pin, and the welding quality and effect are improved.
Further, a receding groove 36 for the boss to extend into is formed around the screw hole positioning pin 32, so that the size error of the nut can be absorbed, and the positions of the screw hole and the circular hole are accurately positioned relative to the door ring workpiece.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (7)
1. A nut plate welding upper electrode is characterized in that: the electrode assembly comprises a nut plate upper electrode detachably mounted on an electrode seat, a workpiece positioning pin protruding out of the bottom surface of the nut plate upper electrode, and an adsorption generator arranged on the nut plate upper electrode and generating adsorption force on a workpiece.
2. A nut plate weld upper electrode as defined in claim 1, wherein: the adsorption generator is a permanent magnet or an electromagnet embedded in the electrode on the nut plate.
3. A nut plate weld upper electrode as defined in claim 1, wherein: the adsorption generator comprises an external negative pressure device and a negative pressure air channel which is communicated with a working port of the negative pressure device and penetrates through the upper electrode of the nut plate, and the negative pressure air channel is opened at the bottom surface of the upper electrode of the nut plate.
4. A nut plate weld upper electrode as defined in claim 1, wherein: and an electrode positioning pin for alignment positioning is arranged between the electrode seat and the electrode on the nut plate.
5. A nut plate weld upper electrode as defined in claim 4, wherein: the electrode positioning pins are provided with two.
6. A nut plate weld upper electrode as defined in claim 1, wherein: the workpiece positioning pin comprises a screw hole positioning pin for inserting a threaded hole of the nut plate workpiece and a round hole positioning pin for inserting a round hole for positioning.
7. A nut plate weld upper electrode as defined in claim 6, wherein: and a yielding groove for the boss to extend into is arranged around the screw hole positioning pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220158456.0U CN216802067U (en) | 2022-01-20 | 2022-01-20 | Electrode on nut plate welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220158456.0U CN216802067U (en) | 2022-01-20 | 2022-01-20 | Electrode on nut plate welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216802067U true CN216802067U (en) | 2022-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220158456.0U Active CN216802067U (en) | 2022-01-20 | 2022-01-20 | Electrode on nut plate welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216802067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115716177A (en) * | 2022-11-25 | 2023-02-28 | 昆山质子激光设备有限公司 | Pressure sensing diaphragm welding tool |
-
2022
- 2022-01-20 CN CN202220158456.0U patent/CN216802067U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115716177A (en) * | 2022-11-25 | 2023-02-28 | 昆山质子激光设备有限公司 | Pressure sensing diaphragm welding tool |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zou Chunya Inventor after: Xu Luobin Inventor after: He Yueyuan Inventor before: Zou Chunya Inventor before: He Yueyuan |