CN221363200U - Laser welding jig and laser welding equipment - Google Patents

Abstract

The utility model relates to the technical field of laser welding, and provides a laser welding jig and laser welding equipment, wherein the laser welding jig comprises a body and a shunt piece, and the laser welding jig comprises the following components in percentage by weight: the body is provided with a connecting end and a pressing end along a first direction, a first cavity, a second cavity and a third cavity which are sequentially communicated along the first direction are formed in the body, laser can pass through the body, the connecting end is provided with a first opening communicated with the first cavity, the pressing end is provided with a second opening communicated with the third cavity, and meanwhile, the cavities are correspondingly communicated with a first air passage, a second air passage and a third air passage and are used for supplying air; the shunt piece is arranged in the third cavity and forms at least two shunt cavities, the shunt cavities penetrate through two sides of the shunt piece along the first direction, a third opening surrounding the piece to be welded is formed on one side of the pressing end, gas isolation is formed around the welding seam when air is supplied, oxidation of the welding seam is avoided, and quality is ensured. The laser welding equipment with the laser welding jig also has the advantages.

Description

Laser welding jig and laser welding equipment

Technical Field

The utility model relates to the field of battery pole piece manufacturing, in particular to a laser welding jig and laser welding equipment.

Background

Laser welding typically produces a significant amount of dust, fumes, slag spatter, and other contaminants. In the related art, pollutants such as dust, smog and welding slag splashes generated in the welding process are pumped away and removed through a dust removing device, so that a certain dust removing effect can be achieved, the pollution of the pollutants to a welding piece is reduced, but the dust removing efficiency is difficult to meet the situation that the requirements on certain welding quality are high, for example, in the manufacturing process of a battery, the requirements on overcurrent and tab strength of the battery and low splashing are considered in the welding of the tab, the tab is required to be welded with enough welding seam width, and meanwhile, the problem that the battery is short-circuited because the welding pollutants such as dust and metal particles fall onto a battery core is also required to be prevented. In the process of welding the tab by using the laser welding technology, lower dust removal efficiency can lead to the pollutants entering the battery cell, so that the quality problem of a welding piece can be caused, and welding faults are extremely easy to cause, so that the production efficiency is influenced. The welding process is also very easy to cause oxidation of the welding area of the tab, and the quality of the welding seam is affected.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the laser welding jig capable of improving the dust removal efficiency and effectively preventing the weld joint from being oxidized.

The utility model also provides laser welding equipment with the laser welding jig.

According to an embodiment of the first aspect of the utility model, the laser welding jig comprises a body and a shunt, wherein the body is provided with a connecting end and a pressing end along a first direction, a first chamber, a second chamber and a third chamber which are sequentially communicated along the first direction are formed in the body, the connecting end is provided with a first opening communicated with the first chamber, and the pressing end is provided with a second opening communicated with the third chamber; the flow dividing piece is arranged in the third cavity, at least two flow dividing cavities are formed in the flow dividing piece, the flow dividing cavities penetrate through two sides of the flow dividing piece along the first direction, and a third opening is formed in one side of the flow dividing cavity, which faces the pressing end; the body is also provided with a first air passage communicated with the first chamber and used for obliquely feeding air towards the first opening direction, a second air passage communicated with the flow distribution cavity and used for feeding air to the flow distribution cavity, and a third air passage communicated with the third chamber and used for feeding air to the second opening.

The laser welding jig provided by the embodiment of the utility model has at least the following beneficial effects: when the laser welding device is applied, the first chamber, the second chamber and the third chamber are communicated to form a channel for laser to pass through so as to weld the workpiece to be welded by laser. When welding, the workpiece to be welded can be pressed through the pressing end, and laser can enter from the first opening and be emitted from the third opening, so that the workpiece to be welded pressed at the pressing end is subjected to laser welding. The first air passage, the second air passage and the third air passage can be used for introducing protective gas, the protective gas of the second air passage and the third air passage can form gas isolation around the welding seam, so that the oxidation of the welding seam is effectively reduced, and the quality of the welding seam is guaranteed. And gas is sent to wait to weld the piece surface from second air flue, third air flue back backward flow and gets into reposition of redundant personnel chamber, second cavity, can take welding pollutant around waiting to weld the piece, and first air flue is towards first opening direction slope admittance, can make welding pollutant move towards first opening direction, realizes removing dust through the mode of extracting air outwards from first opening, effectively prevents that welding pollutant from scattering to the second opening, effectively promotes dust collection efficiency.

According to the laser welding jig of some embodiments of the present utility model, a partition is disposed in the third chamber on the body, the partition separates the second opening to form at least two welding ports, the position of the splitter facing each welding port is respectively provided with an outlet end, each outlet end is respectively provided with the third opening, the third air passage is formed among the outlet end, the partition and the inner wall of the third chamber, and one end of the third air passage facing the welding port is disposed around the third opening.

According to some embodiments of the utility model, the welding opening and the third opening are adapted to contour a weld of the piece to be welded to form a bar-shaped hole structure.

According to some embodiments of the utility model, the body comprises a first channel block, a second channel block and a third channel block arranged in sequence along a first direction, wherein: the first chamber is formed inside the first channel block, the second chamber is formed inside the second channel block, and the third chamber is formed inside the third channel block; the second channel block is further provided with a first air inlet cavity and a second air inlet cavity which are separated from the second cavity, the second channel block is further provided with an air inlet, the first air inlet cavity and the second air inlet cavity are respectively communicated with the air inlet, the first air channel is communicated with the first cavity and the first air inlet cavity, and the second air channel is communicated with the shunt cavity and the second air inlet cavity.

According to some embodiments of the utility model, the second channel block comprises a first assembly abutting against the first channel block, and a second assembly abutting against the third channel block, the first chamber and the second chamber being provided on both sides of the first assembly along a first direction, respectively, wherein: a part of the first channel block is positioned in the second cavity, and the first air channel is formed between the first channel block and the inner wall of the first cavity; the second air passage is formed between the second assembly and an inner wall of the second chamber.

According to the laser welding jig of some embodiments of the utility model, the second air passage is disposed obliquely from the second chamber with respect to the first direction toward the direction of the third opening.

According to some embodiments of the utility model, the inner wall of the third chamber includes a first inclined wall, the first inclined wall is disposed obliquely along the first direction toward a direction approaching the second opening, the outer wall of the splitter includes a second inclined wall, and the second inclined wall has a gap with the first inclined wall to form the third air passage obliquely along the first direction toward a direction approaching the second opening.

According to some embodiments of the utility model, the projection of the third opening is within the projection range of the first chamber and the projection of the third opening is within the projection range of the second chamber on a plane perpendicular to the first direction.

According to some embodiments of the utility model, the laser welding jig further comprises a fixing base and an elastic piece, wherein the elastic piece is connected between the body and the fixing base, so that the body can elastically float relative to the fixing base.

According to a second aspect of the present utility model, a laser welding apparatus includes a laser device, a dust removing member, and a laser welding jig according to any one of the first aspect, wherein: the laser device is used for emitting laser towards the first opening along the first direction, and the laser can be emitted from the third opening for welding a piece to be welded; the dust removing piece is connected to the connecting end, the dust removing cavity communicated with the first opening is formed in the dust removing piece, and the dust removing cavity is used for being communicated with a negative pressure air source.

The laser welding equipment of the embodiment of the second aspect of the utility model has at least the following beneficial effects: when the laser device is applied, the laser device is positioned above the laser welding jig along the first direction, so that the laser can be emitted towards the first opening to directly reach the part to be welded for welding, and the efficiency is higher. When welding, the laser welding jig of the embodiment can ensure that enough shielding gas exists around the welding line, realize gas isolation, effectively avoid welding line oxidation and ensure quality. Meanwhile, the connecting end of the laser welding jig is connected with the dust removing part, the dust removing part is internally provided with the dust removing cavity communicated with the first opening, when the dust removing part sucks gas outwards, the inside of the dust removing cavity is negative pressure, so that the speed of introducing shielding gas can be improved, welding pollutants can be brought away from the periphery of the part to be welded, and the welding quality is improved. When the shielding gas is introduced to the welding position, the welding pollutant is lifted, and the dust removing part is further assisted to remove dust, so that the influence of the pollutant on the welding quality is effectively reduced.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of an overall structure of a laser welding jig according to an embodiment of the present utility model;

FIG. 2 is a top view of the laser welding jig shown in FIG. 1;

FIG. 3 is a front view of the laser welding jig shown in FIG. 1;

FIG. 4 is a cross-sectional view of the laser welding jig A-A shown in FIG. 3 and a schematic view of a shielding gas flow path;

fig. 5 is a partial enlarged view of the laser welding jig E shown in fig. 4;

FIG. 6 is a bottom view of the laser welding jig shown in FIG. 1;

FIG. 7 is a cross-sectional view of the laser welding jig B-B shown in FIG. 6;

FIG. 8 is a schematic diagram of a third channel block of a laser welding jig according to an embodiment of the utility model;

FIG. 9 is a cross-sectional view of the laser welding jig C-C shown in FIG. 8;

Fig. 10 is a schematic diagram of a third open weld profiling structure of a laser welding jig according to an embodiment of the utility model.

Reference numerals: a laser welding jig 10; a body 100; a connection end 110; a first opening 111; a pressing end 120; a second opening 121; a weld 1211; a first channel block 130; a first chamber 131; a second channel block 140; a second chamber 141; a first assembly 142; a second assembly 143; an air inlet 145; a third channel block 150; a third chamber 151; a first sloped wall 1511, a second sloped wall 1512; a partition 1513; a first air intake chamber 160; a first air passage 161; a second air intake chamber 170; a second air passage 171; a third air intake chamber 180; a third air passage 181;

A shunt 200; a shunt cavity 210; an outlet end 220; a third opening 221;

a fixed seat 11;

An elastic member 12;

a dust removing member 20.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the production of lithium batteries, tab welding is a key step, and a laser welding technology is required to tightly connect the tab with other components, and also the requirements of overcurrent, strength and low splashing of the battery are required to be considered. Therefore, not only is a sufficiently wide weld bead required for welding, but also welding contaminants such as dust, metal particles, etc. are prevented from falling onto the battery cells, causing short-circuiting of the battery.

To solve the above problems, a dust removing device is generally used to collect metal vapor or welding contaminants so as to prevent the metal vapor or welding contaminants from falling onto the workpieces to be welded.

Referring to fig. 9 and fig. 1 to 5, a laser welding jig 10 according to an embodiment of the present utility model includes a body 100 and a shunt 200, wherein: the body 100 has a connection end 110 and a pressing end 120 along a first direction for pressing a piece to be welded when welding, and a first chamber 131, a second chamber 141 and a third chamber 151 which are sequentially communicated along the first direction are formed in the body 100, the connection end 110 is provided with a first opening 111 communicated with the first chamber 131, the pressing end 120 is provided with a second opening 121 communicated with the third chamber 151, and laser can enter the pressing end 120 towards the first opening 111 to be welded.

The flow dividing member 200 is disposed in the third chamber 151, at least two flow dividing chambers 210 are formed in the flow dividing member 200, the flow dividing chambers 210 penetrate through two sides of the flow dividing member 200 along the first direction, a third opening 221 is formed on one side of the flow dividing chamber 210 facing the pressing end 120, and the third opening 221 is disposed around the member to be welded, so that gas isolation can be formed around the welding seam when the gas is supplied, oxidation of the welding seam is avoided, and quality of the welding seam is ensured.

The body 100 is further formed with a first air passage 161 communicating with the first chamber 131 for obliquely supplying air toward the first opening 111, a second air passage 171 communicating with the flow dividing chamber 210 for supplying air to the flow dividing chamber 210, and a third air passage 181 communicating with the third chamber 151 for supplying air to the second opening 121. Wherein the first air passage 161 is used for delivering protective gas to the first chamber 131 to assist in evacuating air; the second air channel 171 is used for delivering shielding gas to the shunt cavity 210 so as to ensure that enough shielding gas exists around the welding line; the third air passage 181 is used for delivering shielding gas to the third chamber 151 to ensure gas isolation around the weld and blow up welding contaminants, avoid oxidation of the weld during welding, and improve welding quality.

It should be noted that, the first cavity 131 forms the first opening 111 through the connection end 110, so that the operation range is larger and more convenient when the laser is emitted toward the first opening 111 along the first direction. In other embodiments, the first cavity 131 does not penetrate the connecting end 110, the connecting end 110 is provided with a first opening 111, and the first opening 111 is communicated with the first cavity 131, so that when the laser is emitted towards the first opening 111 along the first direction, the welding position is more accurate, and the welding qualification rate is higher.

The third chamber 151 penetrates through the pressing end 120 to form a second opening 121, and the second opening 121 is communicated with the third chamber 151, so that when laser enters from the first opening 111, the laser can enter the third chamber 151 through the second opening 121 to reach the pressing end 120 for welding. In other embodiments, the third chamber 151 does not penetrate the pressing end 120, the pressing end 120 is provided with the second opening 121, and the second opening 121 communicates with the third chamber 151, so that the laser welding path is more accurate.

As an improvement of the above embodiment, the first chamber 131 is designed along the weld seam, the first chamber 131 penetrates through the connecting end 110 to form the first opening 111, so that the first opening 111 is designed along the weld seam, and when the laser enters the first chamber 131 from the first opening 111 to reach the pressing end 120 for welding, the welding path is more accurate, and the welding accuracy is higher. Or the first chamber 131 does not penetrate through the connecting end 110, and the first opening 111 communicated with the first chamber 131 is arranged at the connecting end 110, and the first opening 111 can be designed along the profile of a welding seam, so that welding is performed at the position where laser enters the first chamber 131 from the first opening 111 to reach the part to be welded of the pressing end 120, the first chamber 131 can have a larger space to accommodate more shielding gas, welding accuracy is not affected, and welding quality is improved.

In other embodiments, the body 100 is internally formed with the first chamber 131 and the second chamber 141 integrally formed in the first direction, which communicate with each other, and the second chamber 141 communicates with the third chamber 151; or the second chamber 141 and the third chamber 151 integrally formed are communicated with each other, and the second chamber 141 is communicated with the first chamber 131; or the first, second and third chambers 131, 141 and 151 integrally formed to communicate with each other; so that the laser can reach the pressing end 120 along the first direction toward the first opening 111 to weld the workpiece to be welded.

The first chamber 131, the second chamber 141, and the third chamber 151 may be formed by integrally molding the body 100, by welding the components of the body 100, or by assembling the components of the body 100.

Referring to fig. 2 and 5, in the laser welding jig 10 according to the embodiment of the present utility model, a partition 1513 is disposed in the third chamber 151 on the body 100, the partition 1513 partitions the second opening 121 to form at least two welding openings 1211, and a portion of the piece to be welded is disposed in the welding openings, for example, a tab of a lithium battery. The position of the splitter 200 facing each welding opening 1211 is respectively provided with an outlet end 220, each outlet end 220 is respectively provided with a third opening 221, a third air passage 181 is formed between the outlet end 220, the partition 1513 and the inner wall of the third chamber 151, and the third air passage 181 is arranged around the third opening 221 towards one end of the welding opening 1211 so as to ensure that when the shielding gas is conveyed, gas isolation can be formed around the welding seam, the welding seam oxidation is avoided, and the welding seam quality is improved.

Referring to fig. 1, 5, 9 and 10, the laser welding jig 10, the welding opening 1211 and the third opening 221 in the embodiment of the present utility model are suitable for profiling the welding seam of the piece to be welded to form a bar-shaped hole structure, so that the welding position is more accurate and the welding is more efficient.

Referring to fig. 1, 3, 5 and 7, in the laser welding jig 10 according to the embodiment of the present utility model, the body 100 includes a first channel block 130, a second channel block 140 and a third channel block 150 sequentially arranged along a first direction, wherein: the first chamber 131 is formed in the first channel block 130, the second chamber 141 is formed in the second channel block 140, the third chamber 151 is formed in the third channel block 150, and the first chamber 131, the second chamber 141 and the third chamber 151 are sequentially communicated, so that laser can sequentially penetrate through the first chamber 131, the second chamber 141 and the third chamber 151 to reach the pressing end 120, welding is performed on a piece to be welded, and welding efficiency is improved.

The second channel block 140 is further provided with a first air inlet cavity 160 and a second air inlet cavity 170 which are separated from the second cavity 141, the second channel block 140 is further provided with an air inlet 145, the first air inlet cavity 160 and the second air inlet cavity 170 are respectively communicated with the air inlet 145, the first air channel 161 is communicated with the first cavity 131 and the first air inlet cavity 160, and the second air channel 171 is communicated with the shunt cavity 210 and the second air inlet cavity 170.

In other embodiments, the first channel block 130 is connected to the second channel block 140, the first chamber 131 and the second chamber 141 are formed therein, respectively, and the second channel block 140 is assembled with the third channel block 150, and the third chamber 151 formed inside the third channel block 150 is in communication with the second chamber 141; or the second channel block 140 is connected with the third channel block 150, the first channel block 130 is assembled with the second channel block 140, and the first chamber 131 formed inside the first channel block 130 is communicated with the second chamber 141; or the first and second channel blocks 130 and 140 are connected with the third channel block 150, and the first, second and third chambers 131, 141 and 151 are sequentially formed therein. In the above manner, the laser can sequentially pass through the first chamber 131, the second chamber 141 and the third chamber 151 to reach the pressing end 120, so as to weld the workpieces to be welded, thereby improving the welding efficiency.

As a modification of the above embodiment, referring to fig. 5 and 7, the second channel block 140 includes a first assembly 142 abutting against the first channel block 130, and a second assembly 143 abutting against the third channel block 150, the first chamber 131 and the second chamber 141 being provided on both sides of the first assembly 142 in the first direction, respectively, wherein: a portion of the first channel block 130 is located in the second chamber 141, and a first air passage 161 is formed between the first channel block 130 and an inner wall of the first chamber 131; a second air passage 171 is formed between the second assembly 143 and the inner wall of the second chamber 141.

The first channel block 130 is formed with a first air inlet cavity 160 in abutting connection with the first assembly 142, the side, facing the first air inlet cavity 160, of the first channel block 130 comprises a first cavity wall, the side, facing the first air inlet cavity 160, of the first assembly 142 comprises a second cavity wall, a first air channel 161 is formed between the first cavity wall and the second cavity, the first air channel 161 is communicated with the first air inlet cavity 160, and therefore protective gas entering the first air inlet cavity 160 can be conveyed to the first cavity 131 through the first air channel 161. Wherein, the first cavity wall and the second cavity wall are both inclined towards the first cavity 131 relative to the first direction, so that the first air channel 161 is inclined towards the first cavity 131, and therefore the shielding gas conveyed by the first air channel 161 from the first air inlet cavity 160 is deflected towards the first cavity 131 and is sent out towards the first opening 111 upwards, and further, the dust removing piece 20 is helped to suck air, and rapid conveying of the shielding gas is achieved.

Meanwhile, the second assembly 143 is assembled with the third channel block 150 to form the second air inlet chamber 170, and the side of the first assembly 142 facing the second air inlet chamber 170 includes a third chamber wall, the side of the second assembly 143 facing the second air inlet chamber 170 includes a fourth chamber wall, a second air channel 171 is formed between the third chamber wall and the fourth chamber wall, and the second air channel 171 communicates with the second air inlet chamber 170, so that the protective gas entering the second air inlet chamber 170 can be delivered to the second chamber 141 through the second air channel 171. Wherein, the third chamber wall and the fourth chamber wall are both inclined towards the second chamber 141 relative to the first direction, so that the second air channel 171 is inclined towards the third opening 221, and therefore, the shielding gas conveyed by the second air channel 171 through the second air inlet chamber 170 is conveyed downwards towards the diversion chamber 210, thereby avoiding the oxidation of welding seams and ensuring the welding quality.

Meanwhile, it should be noted that the provision of the second chamber 141 can increase the shielding gas storage space, so that when the dust removing member 20 sucks welding contaminants at a higher suction speed and takes away a certain amount of shielding gas, there is enough shielding gas inside the second chamber 141 to supplement the amount of reduction, thereby ensuring welding quality.

It should be noted that the second assembly 143 may be a profiling plate, where the profiling plate is provided with a strip-shaped hole structure adapted to profile the weld of the pieces to be welded.

In other embodiments, the third channel block 150 includes a partition 1513, a third chamber 151 is formed inside the third channel block 150, a flow splitting cavity 210 is formed on the inner wall of the flow splitting member 200 and the outer wall of the partition 1513, and after the gas is sent to the surface of the workpiece to be welded from the second air channel 171 and the third air channel 181, the gas flows reversely into the flow splitting cavity 210 and the second chamber 141, so that welding pollutants can be carried away from the periphery of the workpiece to be welded, and welding quality is ensured.

The second air passage 171 and the third air passage 181 are configured to convey the shielding gas from the intake port 145, and the conveying speed is not excessively high. The low speed of the third air passage 181 for delivering the shielding gas is to avoid welding failure caused by too high wind speed in the welding pool, and the second air passage 171 of the second chamber 141 is not too high for delivering the shielding gas because enough shielding gas needs to be reserved in the second chamber 141. Since the speed of the second air passage 171 and the third air passage 181 for conveying the shielding gas is low, referring to fig. 4, the first air passage 161 is provided at a position inclined upward with respect to the first direction, and when the welding contaminant blown by the third air passage 181 passes through the second air passage 171 and reaches the highest point, the welding contaminant without wind force support is blown by the air flow of the first air passage 161 toward the dust removing member 20, so as to avoid falling back to the diversion chamber 210 or the second chamber 141, thereby improving the dust removing efficiency and avoiding the occurrence of quality defects after welding.

Referring to fig. 1, 2 and 9, in the laser welding jig 10 according to the embodiment of the present utility model, the inner wall of the third chamber 151 includes a first inclined wall 1511, the first inclined wall 1511 is disposed obliquely along the first direction toward the direction close to the second opening 121, the outer wall of the splitter 200 includes a second inclined wall 1512, the second inclined wall 1512 has a gap with the first inclined wall 1511, and a third air passage 181 is formed obliquely along the first direction toward the direction close to the second opening 121, so that a shielding gas is input from the third air passage 181 and output toward the third opening 221 surrounded by one end of the welding port 1211, thereby forming a gas barrier around the weld, and further avoiding oxidation of the weld and improving the quality of the weld.

Referring to fig. 2 and 5, the laser welding jig 10 in the embodiment of the present utility model has a projection of the third opening 221 within a projection range of the first chamber 131 and a projection of the third opening 221 within a projection range of the second chamber 141 on a plane perpendicular to the first direction, so that when laser light is emitted toward the first opening 111 in the first direction, the laser light can pass through the first chamber 131, the second chamber 141 and the third chamber 151 to reach to be emitted from the third opening 221 to weld a workpiece to be welded.

Referring to fig. 1, 3, 5 and 7, the laser welding jig 10 in the embodiment of the utility model further includes a fixing base 11 and an elastic member 12, wherein the elastic member 12 is connected between the body 100 and the fixing base 11, so that the body 100 can elastically float relative to the fixing base 11. When the welding device is used, the elastic piece 12 can be compressed or stretched along the first direction, so that the pressing end 120 of the body 100 can tightly press the piece to be welded, poor welding caused by non-parallelism between the piece to be welded or the clamping jig and the pressing end 120 is avoided, the false welding is reduced, the welding qualification rate is improved, and meanwhile, the buffering exists, so that the pressing end 120 can be protected from being damaged by equipment when the piece to be welded is pressed.

As an improvement of the above-described embodiment, the fixing base 11 is provided with a receiving groove in the first direction, the receiving groove being capable of receiving the elastic member 12 such that the elastic member 12 is capable of being compressed or expanded in the first direction within the receiving groove; or the fixing seat 11 is provided with a clamping block along the first direction, the upper end face of the clamping block can be abutted against the elastic piece 12, and the elastic piece 12 is sleeved on the fixing seat 11, so that the elastic piece 12 can be compressed or stretched along the first direction.

The fixing base 11 is arranged on the third channel block 150 along the first direction, the elastic piece 12 is arranged on the fixing base 11, the upper end is propped against the body 100, the lower end is propped against the fixing base 11, so that the elastic piece 12 can elastically float along the first direction, and therefore, when the welding device is used, the elastic piece 12 is in a compressed state, a piece to be welded is placed at the propping end 120, the elastic piece 12 stretches along the first direction, and then the propping end 120 is driven to tightly prop against the piece to be welded, poor welding caused by unparallel of the piece to be welded or the clamping jig and the propping end 120 is finally avoided, false welding is reduced, and welding quality is improved.

It should be noted that, the fixing base 11 can be disposed on the first channel block 130 or the second channel block 140 along the first direction, the elastic member 12 is mounted on the fixing base 11, the upper end abuts against the body 100, and the lower end abuts against the fixing base 11, so that the elastic member 12 can elastically float along the first direction, thereby achieving the above-mentioned beneficial effects.

The elastic member 12 may be a spring.

Referring to fig. 1 to 9, a second aspect of the present application provides a laser welding apparatus including a laser device, a dust removing member 20, and the laser welding jig 10 of any of the above embodiments. Wherein the laser device is configured to emit laser light in a first direction toward the first opening 111, the laser light being capable of being emitted from the third opening 221 for welding a piece to be welded; the connection end 110 may be used to connect the dust removing member 20 to remove dust from the first opening 111 by suction.

When the laser welding jig is applied, the dust removing piece 20 sucks air in the dust removing cavity from the first opening 111, negative pressure is generated in the dust removing cavity after suction, so that the interior of the laser welding jig 10 is helped to be quickly filled with shielding gas, and welding seams are prevented from being oxidized during welding. During welding, the part to be welded is placed at the welding opening 1211 of the laser welding jig 10, the elastic piece 12 positioned between the body 100 and the fixed seat 11 stretches to help the pressing end 120 to press the part to be welded, and the part to be welded or the clamping jig and the pressing end 120 are not parallel to each other, so that poor welding is caused, false welding is reduced, and welding quality is improved. The laser device emits in the first direction toward the first opening 111, and the laser light sequentially passes through the first chamber 131, the second chamber 141, and the third chamber 151 of the laser welding jig 10, and emits the welding-waiting workpiece from the third opening 221.

Meanwhile, after the gas is sent to the surface of the workpiece to be welded from the second air passage 171 and the third air passage 181, the gas reversely flows into the diversion cavity 210 and the second cavity 141, so that welding pollutants can be brought away from the periphery of the workpiece to be welded, the first air passage 161 is inclined towards the direction of the first opening 111 to be charged, the welding pollutants can move towards the direction of the first opening 111, dust removal is realized in a mode of exhausting air from the first opening 111, the welding pollutants are effectively prevented from scattering towards the second opening 121, and the dust removal efficiency is effectively improved.

It should be noted that, the dust removing piece 20 is provided with a dust removing port, and the dust removing port can be designed along the welding seam, so that when the dust removing piece 20 removes dust through the dust removing port, the dust can be sucked along the welding seam, thereby removing dust uniformly and being beneficial to improving welding quality.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. A laser welding jig, its characterized in that includes:

The device comprises a body, a first cavity, a second cavity and a third cavity, wherein the body is provided with a connecting end and a pressing end along a first direction, the first cavity, the second cavity and the third cavity are sequentially communicated along the first direction, the connecting end is provided with a first opening communicated with the first cavity, and the pressing end is provided with a second opening communicated with the third cavity;

The flow dividing piece is arranged in the third cavity, at least two flow dividing cavities are formed in the flow dividing piece, the flow dividing cavities penetrate through two sides of the flow dividing piece along the first direction, and a third opening is formed in one side, facing the pressing end, of the flow dividing cavity;

The body is also provided with a first air passage communicated with the first chamber and used for obliquely feeding air towards the first opening direction, a second air passage communicated with the flow distribution cavity and used for feeding air to the flow distribution cavity, and a third air passage communicated with the third chamber and used for feeding air to the second opening.

2. The laser welding jig according to claim 1, wherein a partition is provided in the third chamber on the body, the partition partitions the second opening to form at least two welding ports, outlet ends are provided at positions of the flow dividing member toward the welding ports, the third openings are provided at the outlet ends, the third air passage is formed between the outlet ends, the partition and an inner wall of the third chamber, and one end of the third air passage toward the welding port is provided around the third opening.

3. The laser welding jig of claim 2, wherein the weld and the third opening are adapted to contour a weld of a piece to be welded to form a bar-shaped hole structure.

4. The laser welding jig of claim 1, wherein the body comprises a first channel block, a second channel block, and a third channel block disposed in sequence along a first direction, wherein:

The first chamber is formed inside the first channel block, the second chamber is formed inside the second channel block, and the third chamber is formed inside the third channel block;

The second channel block is further provided with a first air inlet cavity and a second air inlet cavity which are separated from the second cavity, the second channel block is further provided with an air inlet, the first air inlet cavity and the second air inlet cavity are respectively communicated with the air inlet, the first air channel is communicated with the first cavity and the first air inlet cavity, and the second air channel is communicated with the shunt cavity and the second air inlet cavity.

5. The laser welding jig of claim 4, wherein the second channel block comprises a first assembly abutting the first channel block and a second assembly abutting the third channel block, the first and second chambers being provided on both sides of the first assembly in a first direction, respectively, wherein:

a part of the first channel block is positioned in the second cavity, and the first air channel is formed between the first channel block and the inner wall of the first cavity;

the second air passage is formed between the second assembly and an inner wall of the second chamber.

6. The laser welding jig according to claim 4, wherein the second air passage is provided obliquely from the second chamber with respect to the first direction toward the direction of the third opening.

7. The laser welding jig according to claim 1, wherein the inner wall of the third chamber includes a first inclined wall that is inclined in the first direction toward a direction approaching the second opening, and the outer wall of the flow divider includes a second inclined wall that has a gap with the first inclined wall to form the third air passage that is inclined in the first direction toward a direction approaching the second opening.

8. The laser welding jig according to claim 1, wherein the projection of the third opening is within the projection range of the first chamber and the projection of the third opening is within the projection range of the second chamber on a plane perpendicular to the first direction.

9. The laser welding jig according to claim 1, further comprising a fixing base and an elastic member connected between the body and the fixing base so that the body can elastically float with respect to the fixing base.

10. A laser welding apparatus comprising a laser device, a dust removing member, and the laser welding jig according to any one of claims 1 to 9, wherein,

The laser device is used for emitting laser towards the first opening along the first direction, and the laser can be emitted from the third opening for welding a piece to be welded;

the dust removing piece is connected to the connecting end, the dust removing cavity communicated with the first opening is formed in the dust removing piece, and the dust removing cavity is used for being communicated with a negative pressure air source.