CN218362796U

CN218362796U - Welding tool and laser welding equipment

Info

Publication number: CN218362796U
Application number: CN202221885536.2U
Authority: CN
Inventors: 郑嘉诚; 于秀东; 胡勇; 谭浪; 刘昊; 王瑾; 高云峰
Original assignee: Shenzhen Han's Lithium Battery Intelligent Equipment Co ltd
Current assignee: Shenzhen Han's Lithium Battery Intelligent Equipment Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2023-01-24
Anticipated expiration: 2032-07-19

Abstract

The utility model relates to a welding process technical field particularly, relates to a welding frock and laser welding equipment. The welding tool comprises a base and a pressure plate assembly, wherein a first opening is formed in the base, a workpiece is suitable for being placed on the base, and air flow is suitable for blowing air to the workpiece through the first opening; the pressing plate assembly is connected with the base, a second opening is formed in the pressing plate assembly, the workpiece is located between the base and the pressing plate assembly, and air flow is suitable for blowing air to the workpiece through the second opening. The utility model discloses a place the work piece between base and clamp plate subassembly to let in protective gas to the upper and lower surface of work piece simultaneously through the second opening on first opening on the base and the clamp plate subassembly respectively, thereby guarantee laser quality when to the work piece welding, avoid impurity such as work piece and air to take place to react, guarantee yields after the work piece welding.

Description

Welding tool and laser welding equipment

Technical Field

The utility model relates to a welding process technical field particularly, relates to a welding frock and laser welding equipment.

Background

When laser welding is carried out, how to ensure the quality of the laser welding is particularly important, and in the welding process, because the temperature is higher, the metal in the welding process is easy to contact with impurities such as air and the like to form an oxide layer. Especially for the welding of thin metal plates, because the metal plates are thin, the metal plates are easily contacted with impurities such as air and the like in the welding process, so that an oxidation layer is formed, and the yield of the welded metal plates is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem the work piece easily reacts with impurity such as air during the welding and the yields of the welding back work piece that leads to is relatively poor.

On one hand, in order to solve the above problems, the utility model provides a welding tool, which comprises a base and a pressing plate assembly, wherein the base is provided with a first opening, a workpiece is suitable to be placed on the base, and air flow is suitable to blow air to the workpiece through the first opening; the pressing plate assembly is connected with the base, a second opening is formed in the pressing plate assembly, the workpiece is located between the base and the pressing plate assembly, and air flow is suitable for blowing air to the workpiece through the second opening.

Optionally, the pressure plate assembly includes a first pressure plate and a second pressure plate, the second opening is located on the first pressure plate, a first air flow channel is formed between the first pressure plate and the second pressure plate, and the first air flow channels are respectively communicated with the second opening.

Optionally, a first groove structure is formed in the first pressing plate, and a second groove structure is formed in one end, close to the first pressing plate, of the second pressing plate.

Optionally, the welding tool further includes a sealing element, a third groove structure is further formed in the second pressure plate, the second groove structure is located between the second opening and the third groove structure, the sealing element is installed in the third groove structure, and the sealing element is located between the first pressure plate and the second pressure plate.

Optionally, the first pressing plate is further provided with a fourth groove structure, the number of the second pressing plates is two, the second pressing plates are installed in the fourth groove structure, and the second pressing plates are located on two sides of the first opening respectively.

Optionally, an included angle between a flow direction of the air flow blown out from the first air flow channel and a flow direction of the air flow in the first opening is an obtuse angle.

Optionally, the welding tool further comprises a gas circuit board, the gas circuit board is connected with the base, the base is located between the gas circuit board and the pressing plate assembly, a second gas flow channel is formed in the gas circuit board, and the second gas flow channel is communicated with the first opening.

Optionally, a fifth groove structure is formed in the gas circuit board, and the fifth groove structure is located below the first opening.

Optionally, the gas circuit board is provided with a plurality of through holes, the through holes are located in the fifth groove structure, and the through holes are respectively communicated with the second gas flow channel and the first opening.

On the other hand, the utility model also provides a laser welding equipment, include as above welding frock.

Compared with the prior art, the embodiment of the utility model provides a welding frock has beneficial effect is:

the workpiece is placed between the base and the pressing plate assembly, and the protective gas is introduced to the upper surface and the lower surface of the workpiece through the first opening in the base and the second opening in the pressing plate assembly respectively, so that the quality of the workpiece welded by laser is guaranteed, the workpiece is prevented from reacting with impurities such as air, and the yield of the welded workpiece is guaranteed.

Drawings

Fig. 1 is a schematic view of an overall structure of an embodiment of the welding tool of the present invention;

fig. 2 is a schematic structural view of an embodiment of the base of the present invention;

fig. 3 is a schematic structural view of an embodiment of the first pressing plate of the present invention;

fig. 4 is a schematic structural view of an embodiment of the second pressing plate of the present invention;

fig. 5 is a schematic cross-sectional structural view of an embodiment of the welding tool of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

fig. 7 is a schematic structural diagram of an embodiment of the gas circuit board of the present invention.

Description of the reference numerals:

1-a base; 11-a first opening; 2-a platen assembly; 21-a first platen; 211-a first groove structure; 212-a fourth groove structure; 213-a first air inlet; 22-a second platen; 221-a second groove structure; 222-a third groove structure; 23-a second opening; 3-a first air flow channel; 4-a second airflow channel; 5-pipe joint; 6-a gas circuit board; 61-a fifth groove structure; 62-a through hole; 63-second air inlet.

Detailed Description

The terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, a fixed connection, a removable connection, or a rotatable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The terms "upper", "lower", "front", "rear", "left" and "right" etc. indicate directions or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The terms "first", "second" and "third", etc. 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 defined as "first," "second," and "third" may explicitly or implicitly include at least one of the feature.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1 and 2, an embodiment of the present invention provides a welding tool. The welding tool comprises a base 1 and a pressure plate assembly 2, wherein a first opening 11 is formed in the base 1, a workpiece is suitable for being placed on the base 1, and air flow is suitable for blowing air to the workpiece through the first opening 11; the pressing plate assembly 2 is connected with the base 1, a second opening 23 is formed in the pressing plate assembly 2, the workpiece is located between the base 1 and the pressing plate assembly 2, and air flow is suitable for blowing air to the workpiece through the second opening 23.

The workpiece can be a bipolar plate, which is also called a collector plate and is one of the important components of the fuel cell. Meanwhile, the bipolar plate also has: separating the fuel and the oxidant to prevent gas permeation; current is collected and conducted, and the conductivity is high; the designed and processed flow channel can uniformly distribute gas to a reaction layer of the electrode for electrode reaction, can discharge heat, and keeps the functions and properties of uniform temperature field, corrosion resistance, impact resistance, vibration resistance, thin thickness, light weight and the like of the battery. When the bipolar plate is welded, a flow channel needs to be formed between the anode metal plate and the cathode metal plate, and the anode metal plate and the cathode metal plate are welded together according to the process.

The gas flow may be a shielding gas, the laser may be irradiated from the second opening 23 of the platen assembly 2 onto the surface to be welded of the workpiece, and the laser may weld the workpiece along the length direction of the second opening 23. While welding, the shielding gas can pass through the second opening 23 on the pressure plate assembly 2 and flow to the workpiece, so that the gas flow can uniformly cover the upper surface of the workpiece and the welding position, thereby ensuring the welding quality of the workpiece. Secondly, during welding, the shielding gas can also pass through the first opening 11 on the base 1 and flow to the workpiece, so that the gas flow can uniformly cover the lower surface of the workpiece and the welding position. Therefore, the welding positions of the two opposite side surfaces of the workpiece are covered by the protective gas, the workpiece is prevented from being in contact with impurities such as air and the like to form an oxide layer in the welding process, and the welding quality of the workpiece is further guaranteed.

Through placing the work piece between base 1 and clamp plate subassembly 2 to respectively let in protective gas to the upper and lower surface of work piece simultaneously through first opening 11 on the base 1 and the second opening 23 on the clamp plate subassembly 2, thereby quality when guarantee laser is to the work piece welding avoids impurity such as work piece and air to react, ensures the yields after the work piece welding.

As shown in fig. 3 to 5, the platen assembly 2 includes a first platen 21 and a second platen 22, the second opening 23 is located on the first platen 21, a first air flow channel 3 is formed between the first platen 21 and the second platen 22, and the first air flow channels 3 are respectively communicated with the second opening 23.

First air inlet 213 can be seted up on first clamp plate 21, and first air inlet 213 can communicate with second airflow channel 4, and coupling 5 can be installed to first air inlet 213 department, and it can be connected with outside protective gas generator through the trachea, and protective gas that protective gas generator produced can flow to the work piece through trachea, coupling 5, first airflow channel 3, second opening 23. Therefore, the protection can be provided for the upper part of the workpiece, and the situation that the lower part of the workpiece is easy to generate oxidation reaction with impurities such as air and the like to generate an oxidation layer due to the fact that the heat is higher during laser welding is avoided, so that the quality of the welded workpiece can be guaranteed.

As shown in fig. 3 and 4, a first groove structure 211 is formed on the first pressing plate 21, and a second groove structure 221 is formed on one end of the second pressing plate 22 close to the first pressing plate 21.

The first groove structure 211 and the second groove structure 221 can effectively increase the space in the first gas flow channel 3, and ensure that the shielding gas continuously and uniformly flows out from one end of the first gas flow channel 3 close to the second opening 23. After the shielding gas enters from the first gas inlet 213, the space in the first gas flow channel 3 may be filled with the shielding gas, and the first groove structure 211 and the second groove structure 221 may effectively increase the storage amount of the shielding gas. After the first gas flow channel 3 is completely filled with the shielding gas, the shielding gas can flow out from the side of the first gas flow channel 3 close to the second opening 23 and flow to the workpiece through the second opening 23.

The number of the first groove structures 211 is several. Preferably, the number of the first groove structures 211 is six, six first groove structures 211 may be uniformly distributed in the fourth groove structure 212, and the first groove structures 211 are uniformly distributed on both sides of the second opening 23. The first air flow channel 3 may further include six air inlet channels, the air inlet channels are used for communicating the first groove structure 211 with the air inlets 213, the six air inlet channels are simultaneously filled with the shielding gas through the six first air inlets 213, the shielding gas fills the first groove structure 211 and the second groove structure 221, and after the filling is completed, the shielding gas flows through the second opening 23 and blows towards the workpiece.

Each side of the second opening 23 is distributed with three first groove structures 211, each side of the first pressing plate 21 can be provided with first air inlets 213 with the number matched with that of the first groove structures 211, and the three first groove structures 211 on each side of the second opening 23 can respectively correspond to one second groove structure 221. By arranging the six second groove structures 221, the distribution of the protective gas can be more uniform, the coverage of the protective gas on the welding position of the workpiece after the gas is blown to the workpiece is guaranteed, and the welding quality of the workpiece is guaranteed.

As shown in fig. 3 and 4, the welding tool further includes a sealing element, a third groove structure 222 is further formed on the second pressure plate 22, the second groove structure 221 is located between the second opening 23 and the third groove structure 222, the sealing element is installed in the third groove structure 222, and the sealing element is located between the first pressure plate 21 and the second pressure plate 22.

The sealing element may be a sealing rubber ring, the third groove structure 222 may be used for fixing the sealing rubber ring, and the first pressing plate 21 and the second pressing plate 22 may be fixed by bolts. By providing a sealing rubber ring between the first pressing plate 21 and the second pressing plate 22, the sealing property of the gas in the first gas flow channel 3 can be ensured. Gas is prevented from leaking from the end of the first gas flow channel 3 not close to the second opening 23, or air flows into the first gas flow channel 3 from the gap between the first pressing plate 21 and the second pressing plate 22, so that the purity of the shielding gas flowing out of the first gas flow channel 3 is guaranteed, and the welding process quality is guaranteed.

As shown in fig. 3 and 4, a fourth groove structure 212 is further formed on the first pressing plate 21, the number of the second pressing plates 22 is two, the second pressing plates 22 are installed in the fourth groove structure 212, and the second pressing plates 22 are respectively located at two sides of the first opening 11.

The laser may be irradiated on the workpiece from the space between the two second pressing plates 22 after passing through the first opening 11, and the distance between the two second pressing plates 22 may be equal to the width of the first opening 11. The second pressing plate 22 may have a first opening, the first pressing plate 21 may have a second opening, the second opening is located on the fourth groove structure 212, and the bolt may pass through the first opening and the second opening to fix the first pressing plate 21 and the second pressing plate 22.

Two first air flow passages 3 may be formed between one first pressing plate 21 and two second pressing plates 22, and the two first air flow passages 3 are respectively located at both sides of the first opening 11. When the workpiece is subjected to laser welding, the first gas flow passages 3 on both sides of the first opening 11 can blow shielding gas into the welding position of the workpiece through the first opening 11. Therefore, the protective gas blown into the workpiece is uniformly distributed at the welding position of the workpiece, and the welding processing quality of the workpiece is guaranteed.

As shown in fig. 5 and 6, the included angle between the flow direction of the air flow blown out from the first air flow path 3 and the flow direction of the air flow in the first opening 11 is an obtuse angle.

After the air flow is blown out from the first air flow channel 3, the air flow is blown to the workpiece from an inclined downward direction, and an inclined surface may be cut on the first pressing plate 21, and the inclined surface is located at one end of the second opening 23 far away from the base 1. The end of the second pressing plate 22 close to the second opening 23 may also be provided with an inclined surface, the inclined surfaces of the second pressing plate 22 and the first pressing plate 21 are parallel to each other, and when the airflow is blown out from between the first pressing plate 21 and the second pressing plate 22, the inclined surface guides the flowing direction of the airflow, so that the airflow can flow to the second opening 23 along the direction of the inclined surface.

As shown in fig. 5 and 7, the welding tool further includes a gas circuit board 6, the gas circuit board 6 is connected to the base 1, the base 1 is located between the gas circuit board 6 and the pressing plate assembly 2, a second gas flow channel 4 is formed inside the gas circuit board 6, and the second gas flow channel 4 is communicated with the first opening 11.

The gas circuit board 6 may be provided with a second gas inlet 63, the second gas inlet 63 may be communicated with the second gas flow channel 4, and a pipe joint 5 may be installed at the second gas inlet 63, and may be connected with an external shielding gas generator through a gas pipe. The protective gas generated by the protective gas generator can flow to the workpiece through the gas pipe, the pipe joint 5, the second gas flow channel 4 and the first opening 11. Therefore, the protection can be provided for the lower part of the workpiece, and the situation that the lower part of the workpiece is easy to generate oxidation reaction with impurities such as air and the like to generate an oxidation layer due to the fact that the heat is high during laser welding is avoided, so that the quality of the welded workpiece can be guaranteed.

The number of the second air inlets 63 may be plural, and preferably, the number of the second air inlets 63 is three, three air inlets may be arranged along the length direction of the first opening 11, and the second air flow path 4 may include one main path and three branch paths. The three second air inlets 63 are respectively communicated with one branch channel, protective gas is simultaneously introduced into the three branch channels through the three second air inlets 63, and after the protective gas is converged into the main channel through the three branch channels, the airflow flows through the first opening 11 from the main channel and is blown to the workpiece.

As shown in fig. 7, a fifth groove structure 61 is formed on the gas circuit board 6, and the fifth groove structure 61 is located below the first opening 11.

The fifth groove structure 61 can increase the storage area of the shielding gas, after the shielding gas is blown out from the second gas flow channel 4, the shielding gas can fill the fifth groove structure 61 first, and after the shielding gas fills the fifth groove structure 61 completely, the shielding gas has the first opening 11 to flow to the workpiece. Through setting up fifth groove structure 61, can ensure the continuous stable flow direction work piece of protective gas.

As shown in fig. 7, a plurality of through holes 62 are formed in the gas circuit board 6, the through holes 62 are located in the fifth groove structure 61, and the through holes 62 are respectively communicated with the second gas flow channel 4 and the first opening 11.

The through holes 62 can be arranged at intervals along the length direction of the first opening 11, and the uniformity of gas flowing out from the second channel can be guaranteed by arranging the through holes 62, so that the protective gas flowing out from the second gas flow channel 4 is uniformly distributed below the workpiece, and the quality of the welded workpiece is improved.

Another embodiment of the utility model provides a laser welding equipment, include as above welding frock. The laser welding equipment has the same beneficial effects as the welding tool, and is not repeated herein.

Although the present application has been described above, the scope of protection of the present application is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and such changes and modifications will fall within the scope of the present invention.

Claims

1. The utility model provides a welding frock, its characterized in that includes:

the workpiece positioning device comprises a base, a positioning device and a positioning device, wherein a first opening is formed in the base, a workpiece is suitable for being placed on the base, and air flow is suitable for blowing air to the workpiece through the first opening;

the pressing plate assembly is connected with the base, a second opening is formed in the pressing plate assembly, the workpiece is located between the base and the pressing plate assembly, and air flow is suitable for blowing air to the workpiece through the second opening.

2. The welding tool of claim 1, wherein the pressure plate assembly comprises a first pressure plate and a second pressure plate, the second opening is located on the first pressure plate, a first air flow channel is formed between the first pressure plate and the second pressure plate, and the first air flow channels are respectively communicated with the second opening.

3. The welding tool of claim 2, wherein the first pressure plate is provided with a first groove structure, and one end of the second pressure plate, which is close to the first pressure plate, is provided with a second groove structure.

4. The welding tool of claim 3, further comprising a seal, wherein the second pressure plate further defines a third groove structure, the second groove structure is located between the second opening and the third groove structure, the seal is mounted in the third groove structure, and the seal is located between the first pressure plate and the second pressure plate.

5. The welding tool according to claim 2, wherein a fourth groove structure is further formed in the first pressing plate, the number of the second pressing plates is two, the second pressing plates are mounted in the fourth groove structure, and the second pressing plates are located on two sides of the first opening respectively.

6. The welding tool according to claim 2, wherein an included angle between the flow direction of the air flow blown out from the first air flow passage and the flow direction of the air flow in the first opening is an obtuse angle.

7. The welding tool of claim 1, further comprising a gas circuit board, wherein the gas circuit board is connected with the base, the base is located between the gas circuit board and the pressure plate assembly, a second gas flow channel is formed in the gas circuit board, and the second gas flow channel is communicated with the first opening.

8. The welding tooling of claim 7, wherein a fifth groove structure is disposed on the gas circuit board, and the fifth groove structure is located below the first opening.

9. The welding tool of claim 8, wherein the gas circuit board is provided with a plurality of through holes, the through holes are located in the fifth groove structure, and the through holes are respectively communicated with the second gas flow channel and the first opening.

10. A laser welding apparatus comprising the welding tooling of any one of claims 1-9.