Protective cover assembly and laser welding equipment

Abstract

The utility model relates to the technical field of welding, and particularly discloses a protective cover assembly and laser welding equipment. Wherein the protective cover assembly is provided with a cavity and an inner wall face defining the cavity, the cavity is used for allowing laser to penetrate through the protective cover assembly, the protective cover assembly is further provided with a first air inlet flow channel and a second air inlet flow channel, the first air inlet flow channel is communicated with the cavity, a first air inlet is formed in the inner wall face, and the second air inlet flow channel is communicated with the cavity; a second air inlet is formed in the inner wall face, and the opening direction of the first air inlet and the opening direction of the second air inlet are at least partially opposite. According to the embodiment of the invention, the shielding gas can be partially blown oppositely, so that the flow rate of the shielding gas blown into the cavity is reduced, interference to the welding position is reduced, the cavity can be more rapidly filled with the gas, and the welding quality is improved.

Description

Technical Field

[0001] This application relates to the field of welding technology, and in particular to a protective cover assembly and laser welding equipment. Background Technology

[0002] In the process of assembling square batteries into modules, conductive components are welded to the terminals of individual battery cells using laser welding equipment, thereby enabling electrical conductivity between the battery cells. The laser welding equipment includes a protective shield assembly. This assembly has cavities that are filled with a protective welding gas above the weld joint, thus improving weld quality.

[0003] Currently, the protective cover assembly continuously injects protective gas into the cavity through an air inlet. This protective gas has a certain flow rate, which can easily agitate the molten pool and reduce welding quality. Utility Model Content

[0004] Embodiments of this application provide a protective shield assembly and a laser welding device that reduce the flow rate of the protective gas blown into the cavity.

[0005] To address the aforementioned technical problems, embodiments of this application disclose the following technical solutions:

[0006] A protective shield assembly for laser welding equipment, the protective shield assembly having intersecting first and second directions, the protective shield assembly having a cavity extending along the first direction and an inner wall surface surrounding the cavity, the cavity being used for laser to pass through the protective shield assembly;

[0007] The protective cover assembly also has a first air inlet channel and a second air inlet channel. The first air inlet channel is connected to the cavity and forms a first air inlet on the inner wall surface. The second air inlet channel is connected to the cavity and forms a second air inlet on the inner wall surface.

[0008] The opening orientation of the first air inlet and the opening orientation of the second air inlet are both parallel to the second direction, and in the second direction, the first air inlet and the second air inlet are at least partially opposite to each other.

[0009] In addition to one or more of the features disclosed above, or as an alternative,

[0010] The protective shield assembly includes:

[0011] The protective component has a first sub-cavity extending along a first direction, and a first air inlet channel and a second air inlet channel are formed on the protective component.

[0012] The abutting member has a second sub-cavity extending along a first direction;

[0013] The first sub-cavity and the second sub-cavity are connected in a first direction to form a cavity.

[0014] In addition to one or more of the features disclosed above, or as an alternative,

[0015] The protective component has a first inner wall surface that surrounds and forms a first sub-cavity, and the abutting component has a second inner wall surface that surrounds and forms a second sub-cavity;

[0016] The first inner wall surface and the second inner wall surface are spaced apart in the first direction to form grooves, and the first air inlet and the second air inlet are respectively connected to the grooves.

[0017] In addition to one or more of the features disclosed above, or as an alternative,

[0018] The abutment and the protective part are mated in the first direction and are detachably connected.

[0019] In addition to one or more of the features disclosed above, or as an alternative,

[0020] The protective cover assembly has a circumferential direction perpendicular to the first direction;

[0021] The protective cover assembly also includes an air outlet pipe installed on the protective component. An air outlet channel is formed inside the air outlet pipe, which communicates with the cavity and forms an air outlet on the inner wall surface.

[0022] In the circumferential direction, the air outlet is set at the same distance from the first air inlet and the second air inlet.

[0023] In addition to one or more of the features disclosed above, or as an alternative,

[0024] The end face of one end of the protective cover assembly in the first direction is an abutment end face, which is used to contact the workpiece to be welded in the first direction;

[0025] In the first direction, the air outlet is located on the side of the first air inlet away from the contact end face, and the air outlet is located on the side of the second air inlet away from the contact end face.

[0026] In addition to one or more of the features disclosed above, or as an alternative,

[0027] The end face of one end of the protective cover assembly in the first direction is an abutment end face, which is used to contact the workpiece to be welded in the first direction;

[0028] In the first direction, the first air inlet is spaced apart from the abutting end face, and the second air inlet is spaced apart from the abutting end face.

[0029] In addition to one or more of the features disclosed above, or as an alternative,

[0030] The protective component includes a main body and a flange. The end face of one end of the main body in a first direction is a first predetermined end face. The flange protrudes from the first predetermined end face and is annular. The main body has a hollow structure. The main body and the flange together form a first sub-cavity.

[0031] The end face of one end of the abutment in the first direction is the second predetermined end face. The abutment is provided with a positioning groove, a first venting groove and a second venting groove on the second predetermined end face. The first venting groove and the second venting groove are respectively located on opposite sides of the positioning groove in the second direction and are respectively connected to the positioning groove. The abutment is also provided with a light-transmitting hole that runs through the first direction on the bottom surface of the positioning groove. The positioning groove and the light-transmitting hole together form the second sub-cavity.

[0032] The first predetermined end face and the second predetermined end face are fitted together, and the flange is inserted into the positioning groove. The height of the flange protruding from the first predetermined end face is less than the depth of the positioning groove recessed into the second predetermined end face. The part of the connection between the first venting groove and the positioning groove that is not blocked by the flange forms the first air inlet, and the part of the connection between the second venting groove and the positioning groove that is not blocked by the flange forms the second air inlet.

[0033] In addition to one or more of the features disclosed above, or as an alternative,

[0034] The main body has a first sub-flow channel and a second sub-flow channel. The first sub-flow channel forms a first opening on a first predetermined end face. The second sub-flow channel forms a second opening on the first predetermined end face. The first opening faces the first vent groove. The walls of the first predetermined end face and the first vent groove form a third sub-flow channel. The first sub-flow channel and the third sub-flow channel together form a first air inlet channel. The second opening faces the second vent groove. The walls of the first predetermined end face and the second vent groove form a fourth sub-flow channel. The second sub-flow channel and the fourth sub-flow channel together form a second air inlet channel.

[0035] A laser welding device is provided, the laser welding device having a first direction, the laser welding device comprising: a base; a protective cover assembly movably disposed on the base along the first direction, the protective cover assembly being the protective cover assembly of the above embodiment; and an elastic member elastically clamped between the base and the protective cover assembly along the first direction.

[0036] One of the above technical solutions has the following advantages or beneficial effects:

[0037] The opening orientation of the first air inlet and the opening orientation of the second air inlet are parallel to a second direction, in which the first air inlet and the second air inlet are at least partially opposite to each other. The protective gases blown in from the first air inlet and the second air inlet flow towards each other and collide with each other, thereby reducing the flow rate of the protective gas blown into the cavity. Furthermore, the two air streams from the first air inlet and the second air inlet blow against each other at least partially, causing the two gas streams to collide and thus more evenly disperse the incoming gas within the cavity, allowing the gas to quickly fill the cavity, ensuring the gas concentration within the cavity, and thereby improving the welding quality. Attached Figure Description

[0038] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0039] Figure 1 This is a front view of the laser welding equipment in the embodiments of this application;

[0040] Figure 2 This is a cross-sectional view of the laser welding equipment in the embodiments of this application along the second direction;

[0041] Figure 3 This is a schematic diagram of the embodiment of the present application, mainly used to illustrate the overall structure of the protective cover assembly;

[0042] Figure 4 This is a cross-sectional view of the laser welding equipment in the embodiments of this application along the first direction;

[0043] Figure 5 yes Figure 4 A magnified view of part A in the middle;

[0044] Figure 6 This is a schematic diagram of the structure of the protective component, mainly used to illustrate the structure in the embodiments of this application;

[0045] Figure 7 This is a schematic diagram of the structure of the abutment component, mainly used to illustrate the structure of the component in this application embodiment;

[0046] Figure 8 This is a cross-sectional view used primarily to show the location of the air outlet in the embodiments of this application;

[0047] Figure 9 yes Figure 4 The section along the BB direction is mainly used to show the cross-sectional view of the trachea structure;

[0048] Figure 10 This is a cross-sectional view of the tracheal structure further shown in the embodiments of this application.

[0049] Explanation of reference numerals in the attached drawings: 100, protective cover assembly; 110, cavity; 111, inner wall surface; 1111, first inner wall surface; 1112, second inner wall surface; 112, groove; 120, first air intake channel; 121, first air inlet; 130, second air intake channel; 131, second air inlet;

[0050] 14. Air outlet pipe; 140. Air outlet passage; 141. Air outlet;

[0051] 150. Protective component; 151. Main body; 152. Flange; 153. First predetermined end face; 154. First sub-channel; 155. First opening; 156. Second sub-channel; 157. Second opening; 158. First sub-cavity;

[0052] 160. Abutting part; 161. Second predetermined end face; 163. Positioning groove; 164. First vent groove; 165. Second vent groove; 166. Light-transmitting hole; 167. Second sub-cavity; 168. Third sub-channel; 169. Fourth sub-channel; 170. Abutting end face;

[0053] 200, Base; 201, Mounting hole; 202, Mounting groove; 300, Dust hood; 301, Tailpipe; 400, Fastener; 500, Flexible element; 600, Inlet quick-connect fitting;

[0054] L, reference axis; Z, first direction; X, second direction; Y, third direction; O, circumferential direction. Detailed Implementation

[0055] To make the objectives, technical solutions, and beneficial effects of this application clearer, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this application. It should be understood that the specific embodiments described in this specification are merely for explaining this application and are not intended to limit it.

[0056] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0057] The following is in conjunction with the appendix Figure 1-10 This application will be described in detail.

[0058] First Embodiment

[0059] Reference Figure 1 , Figure 2 and Figure 3 This application discloses a laser welding device having a first direction Z and a second direction X. The laser welding device includes a base 200, an elastic element 500 disposed on the base 200, and a protective cover assembly 100. The base 200 is cuboid in shape, with the first direction Z perpendicular to the largest plane of the base 200, and the second direction X parallel to the length direction of the base.

[0060] The base 200 has a rectangular array of multiple mounting holes 201, each of which extends through the base 200 along the first direction Z. Each mounting hole 201 corresponds to the mounting of a protective cover assembly 100. The base 200 has four mounting slots 202 around each mounting hole 201. An elastic element 500 is correspondingly disposed within each mounting slot 202. Specifically, one end of the elastic element 500 abuts against the protective cover assembly 100, and the other end abuts against the bottom surface of the mounting slot 202, thereby allowing the protective cover assembly 100 to be movably disposed on the base 200 along the first direction Z.

[0061] To secure the protective cover assembly 100, in some preferred embodiments, each mounting slot 202 is provided with a corresponding fastener 400. In this embodiment, the fastener 400 is a height-adjusting screw, with one end of each screw penetrating the base 200 and extending into the mounting slot 202, allowing the screw to slide along the first direction Z within the mounting slot 202. This end of the screw is bolted to the protective cover assembly 100. During welding, the protective cover assembly 100 abuts against the product, thereby compressing the elastic element 500 to achieve stable contact between the protective cover assembly 100 and the product.

[0062] In the above embodiments, during laser welding, the protective cover assembly 100 uses the elastic element 500 to stably contact the product, ensuring the stability of the welding process and preventing gas leakage. The use of equal-height screws allows for more accurate displacement of the protective cover assembly 100 along the first direction Z, ensuring fitting precision while improving the smoothness of the protective cover assembly 100's movement, thus comprehensively improving welding quality. Furthermore, for a single protective cover assembly 100, removing the four equal-height screws allows for easy disassembly from the base 200, facilitating inspection and maintenance of the protective cover assembly 100.

[0063] The laser welding equipment also includes a dust hood 300 for discharging welding fumes. In one example, two dust hoods 300 are provided corresponding to the protective cover assembly 100. Each dust hood 300 is a hollow square tube, with the side facing the base 200 open and fixed to the base 200. Each dust hood 300 has a tailpipe 301 on the side facing away from the base 200. The tailpipe 301 communicates with the interior of the dust hood 300, allowing the welding fumes generated inside the protective cover assembly 100 to enter the dust hood 300 and then be discharged through the tailpipe 301.

[0064] Second Embodiment

[0065] Reference Figure 4 and Figure 5The protective shield assembly 100 has intersecting first direction Z, second direction X, and third direction Y. The first direction Z is perpendicular to the maximum plane of the base 200, and the second direction X and the third direction Y are the length and width directions of the base 200, respectively. The protective shield assembly 100 has a cavity 110 extending along the first direction Z and an inner wall surface 111 surrounding the cavity 110. The cavity 110 is used to allow laser light to pass through the protective shield assembly 100. The protective shield assembly 100 also has a first air inlet channel 120 and a second air inlet channel 130. The first air inlet channel 120 communicates with the cavity 110 and forms a first air inlet 121 on the inner wall surface 111. The second air inlet channel 130 communicates with the cavity 110 and forms a second air inlet 131 on the inner wall surface 111. The opening direction of the first air inlet 121 and the opening direction of the second air inlet 131 are both parallel to the second direction X. In the second direction X, the first air inlet 121 and the second air inlet 131 are at least partially opposite to each other. Specifically, the protective cover assembly 100 also has a reference axis L, with the first air inlet 121 and the second air inlet 131 respectively disposed on both sides of the reference axis L and disposed opposite to each other.

[0066] To facilitate the installation of the air tube, quick-connect fittings 600 for air supply are installed at the inlets of the first air inlet channel 120 and the second air inlet channel 130, respectively.

[0067] In related technologies, the protective cover assembly 100 has an air inlet for air intake and an air outlet 141 for air exhaust. This causes the gas to enter the cavity 110 through the air inlet and then quickly flow out of the air outlet 141, making it difficult to efficiently fill the cavity 110. Consequently, the gas concentration inside the cavity 110, especially near the welding position, is insufficient, leading to a decrease in welding quality. In this embodiment, since the first air inlet 121 and the second air inlet 131 are at least partially opposite to each other, the two air streams from the first air inlet 121 and the second air inlet 131 blow against each other at least partially. The collision of the two air streams allows the incoming gas to spread more evenly within the cavity 110, thereby rapidly filling the cavity 110, ensuring the gas concentration within the cavity 110, and thus improving welding quality. Furthermore, the gas collision can effectively reduce the gas flow velocity, reduce the interference of gas flow on welding, and improve welding quality.

[0068] Reference Figure 5-8More specifically, in an optional embodiment of the protective cover assembly 100, the protective cover assembly 100 includes a protective member 150 and an abutment member 160 disposed on the protective member 150. A first air inlet channel 120 and a second air inlet channel 130 are formed on the protective member 150. The protective member 150 has a first sub-cavity 158 extending along a first direction Z; the abutment member 160 has a second sub-cavity 167 extending along the first direction Z. The first sub-cavity 158 and the second sub-cavity 167 communicate in the first direction Z to form a cavity 110.

[0069] More specifically, the protective member 150 has a first inner wall surface 1111 surrounding a first sub-cavity 158, and the abutment member 160 has a second inner wall surface 1112 surrounding a second sub-cavity 167; the first inner wall surface 1111 and the second inner wall surface 1112 are spaced apart in the first direction Z to form an annular groove 112, and the first air inlet 121 and the second air inlet 131 are respectively connected to the groove 112.

[0070] In the above embodiments, an annular groove 112 is provided, and then the first air inlet 121 and the second air inlet 131 are respectively connected to the groove 112 so that the gas enters the cavity 110 in a circumferential direction O, which improves the uniformity of air intake and further ensures the uniform distribution of gas in the cavity 110 during welding, thereby improving the welding quality.

[0071] Reference Figure 6 , Figure 7 and Figure 8 The abutment 160 and the protective member 150 are mated in the first direction Z and are detachably connected. Since the protective member 150 and the abutment 160 are detachably connected, when the first air inlet 121 and the second air inlet 131 are blocked by welding slag, the abutment 160 can be easily removed from the protective member 150, thereby cleaning the first air inlet 121 and the second air inlet 131 to ensure the smooth entry of welding shielding gas.

[0072] More specifically, the protective component 150 includes a main body 151 and a flange 152. The end face of the main body 151 near the flange 152 in the first direction Z is a first predetermined end face 153. The flange 152 protrudes from the first predetermined end face 153 and is arranged in a ring shape. The main body 151 has a hollow structure. The inner wall surface 111 of the main body 151 and the inner wall surface 111 of the flange 152 together form a first inner wall surface 1111. The hollow structure inside the main body 151 and the space surrounding the flange 152 together form a first sub-cavity 158.

[0073] The end face of the abutment member 160 near the protective member 150 in the first direction Z is the second predetermined end face 161. The abutment member 160 has a positioning groove 163, a first venting groove 164, and a second venting groove 165 on the second predetermined end face 161. The first venting groove 164 and the second venting groove 165 are located on opposite sides of the positioning groove 163 in the second direction X, and are respectively connected to the positioning groove 163. The abutment member 160 also has a light-transmitting hole 166 extending along the first direction Z on the bottom surface of the positioning groove 163. The inner wall surface 111 of the positioning groove 163 and the inner wall surface 111 of the light-transmitting hole 166 together form a second inner wall surface 1112. The space enclosed by the positioning groove 163 and the space enclosed by the light-transmitting hole 166 together form a second sub-cavity 167.

[0074] When the abutment 160 and the protective member 150 are installed, the first predetermined end face 153 and the second predetermined end face 161 are fitted together, and the abutment 160 and the protective member 150 are fixed together using bolts or screws. The flange 152 is inserted into the positioning groove 163. The height of the flange 152 protruding from the first predetermined end face 153 is less than the depth of the positioning groove 163 recessed into the second predetermined end face 161, thereby creating a gap between the flange 152 and the opposite side of the positioning groove 163, thus forming an annular groove 112. The portion of the connection between the first vent groove 164 and the positioning groove 163 not covered by the flange 152 forms the first air inlet 121, and the portion of the connection between the second vent groove 165 and the positioning groove 163 not covered by the flange 152 forms the second air inlet 131. In this embodiment, both the first air inlet 121 and the second air inlet 131 are part of the groove 112.

[0075] Reference Figure 7 and 8 More specifically, in one embodiment, the main body 151 has a first sub-channel 154 and a second sub-channel 156, the first sub-channel 154 forming a first opening 155 on a first predetermined end face 153, and the second sub-channel 156 forming a second opening 157 on the first predetermined end face 153.

[0076] The first opening 155 is directly opposite the first venting groove 164. The first predetermined end face 153 and the inner wall of the first venting groove 164 form a third sub-flow channel 168. The first sub-flow channel 154 and the third sub-flow channel 168 together form the first air intake channel 120. The second opening 157 is directly opposite the second venting groove 165. The first predetermined end face 153 and the inner wall of the second venting groove 165 form a fourth sub-flow channel 169. The second sub-flow channel 156 and the fourth sub-flow channel 169 together form the second air intake channel 130.

[0077] Taking the first inlet air passage 120 as an example, when the protective gas is supplied from the quick-connect connector at the inlet of the first inlet air passage 120, the protective gas enters the third sub-flow passage 168 through the first opening 155 from the first sub-flow passage 154, and finally enters the cavity 110 from the first air inlet 121 and the groove 112. Similarly, when the protective gas is supplied from the quick-connect connector at the inlet of the second inlet air passage 130, the protective gas enters the fourth sub-flow passage 169 through the second opening 157 from the second sub-flow passage 156, and finally enters the cavity 110 from the second air inlet 131 and the groove 112.

[0078] Reference Figure 5 , Figure 9 and Figure 10 The protective cover assembly 100 has a circumferential direction O perpendicular to the first direction Z. The protective cover assembly 100 also includes an air outlet pipe 14 disposed on the protective member 150, an air outlet channel 140 formed inside the air outlet pipe 14, the air outlet channel 140 communicating with the cavity 110, and an air outlet 141 formed on the inner wall surface 111.

[0079] After the protective gas enters from the first inlet air passage 120 and the second inlet air passage 130 and performs its function, it enters the dust collector 300 from the outlet 141 along the outlet air passage 140 and is finally discharged.

[0080] Back Figure 8 More specifically, in the circumferential direction O, the air outlet 141 is set at the same distance from the first air inlet 121 and the second air inlet 131.

[0081] Due to the above-mentioned configuration of the air outlet 141, the distance from the gas entering through the first air inlet 121 and the second air inlet 131 to the air outlet 141 is the same, which allows the gas to be dispersed more evenly from the air outlet 141, thereby improving the uniformity of gas flow and ensuring the uniformity of gas in the cavity 110.

[0082] In one example, more specifically, the end face of the abutment 160 facing away from the protective member 150 in the first direction Z is the abutment end face 170, which is used to contact the workpiece to be welded along the first direction Z. In the first direction Z, the air outlet 141 is located on the side of the first air inlet 121 facing away from the abutment end face 170, and the air outlet 141 is located on the side of the second air inlet 131 facing away from the abutment end face 170.

[0083] In the above embodiment, the air outlet 141 is located further away from the contact end face 170 than the first air inlet 121 and the second air inlet 131. The contact end face 170 is the end face closer to the welding position. This setting makes the gas entering through the first air inlet 121 and the second air inlet 131 more concentrated at the welding position, prolonging the filling time of the shielding gas at the welding position, thereby making the shielding gas more effective in supporting the welding process and improving the welding quality.

[0084] In one example, more specifically, in the first direction Z, the first air inlet 121 is spaced apart from the abutment end face 170, and the second air inlet 131 is spaced apart from the abutment end face 170.

[0085] The above settings ensure that the first air inlet 121 and the second air inlet 131 are at a certain distance from the welding position, thus preventing the gas entering from the first air inlet 121 and the second air inlet 131 from blowing directly onto the welding position and interfering with the welding position, thereby improving the welding quality.

[0086] The above steps are provided only to help understand the method, structure, and core ideas of this application. Those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. A protective cover assembly (100) for use in laser welding equipment, characterized in that, The protective shield assembly (100) has intersecting first direction (Z) and second direction (X), the protective shield assembly (100) has a cavity (110) extending along the first direction (Z) and an inner wall surface (111) surrounding the cavity (110), the cavity (110) being used for laser to pass through the protective shield assembly (100); The protective cover assembly (100) also has a first air inlet channel (120) and a second air inlet channel (130). The first air inlet channel (120) communicates with the cavity (110) and forms a first air inlet (121) on the inner wall surface (111). The second air inlet channel (130) communicates with the cavity (110) and forms a second air inlet (131) on the inner wall surface (111). The opening orientation of the first air inlet (121) and the opening orientation of the second air inlet (131) are both parallel to the second direction (X). In the second direction (X), the first air inlet (121) and the second air inlet (131) are at least partially opposite to each other.

2. The protective cover assembly (100) as claimed in claim 1, characterized in that, The protective shield assembly (100) includes: The protective component (150) has a first sub-cavity (158) extending along the first direction (Z), and the first air inlet channel (120) and the second air inlet channel (130) are formed on the protective component (150); The abutment (160) has a second sub-cavity (167) extending along the first direction (Z); The first sub-cavity (158) and the second sub-cavity (167) are connected in the first direction (Z) to form the cavity (110).

3. The protective cover assembly (100) as described in claim 2, characterized in that, The protective member (150) has a first inner wall surface (1111) surrounding the first sub-cavity (158), and the abutment member (160) has a second inner wall surface (1112) surrounding the second sub-cavity (167). The first inner wall surface (1111) and the second inner wall surface (1112) are spaced apart in the first direction (Z) to form grooves (112), and the first air inlet (121) and the second air inlet (131) are respectively connected to the grooves (112).

4. The protective cover assembly (100) as claimed in claim 3, characterized in that, The abutment (160) and the protective member (150) are mated in the first direction (Z) and are detachably connected.

5. The protective cover assembly (100) as described in claim 2, characterized in that, The protective shield assembly (100) has a circumferential direction (O) perpendicular to the first direction (Z); The protective cover assembly (100) further includes an air outlet pipe (14) disposed on the protective member (150), an air outlet channel (140) is formed inside the air outlet pipe (14), the air outlet channel (140) communicates with the cavity (110), and an air outlet (141) is formed on the inner wall surface (111); In the circumferential direction (O), the air outlet (141) is arranged at the same distance from the first air inlet (121) and the second air inlet (131).

6. The protective cover assembly (100) as claimed in claim 5, characterized in that, The end face of one end of the protective cover assembly (100) in the first direction (Z) is an abutment end face (170), which is used to contact the workpiece to be welded along the first direction (Z); In the first direction (Z), the air outlet (141) is located on the side of the first air inlet (121) away from the abutting end face (170), and the air outlet (141) is located on the side of the second air inlet (131) away from the abutting end face (170).

7. The protective cover assembly (100) as claimed in claim 5, characterized in that, The end face of one end of the protective cover assembly (100) in the first direction (Z) is an abutment end face (170), which is used to contact the workpiece to be welded along the first direction (Z); In the first direction (Z), the first air inlet (121) is spaced apart from the abutting end face (170), and the second air inlet (131) is spaced apart from the abutting end face (170).

8. The protective cover assembly (100) as claimed in claim 2, characterized in that, The protective component (150) includes a main body (151) and a flange (152). The end face of the main body (151) in the first direction (Z) is a first predetermined end face (153). The flange (152) protrudes from the first predetermined end face (153) and is annular. The main body (151) is a hollow structure. The main body (151) and the flange (152) together form the first sub-cavity (158). The end face of the abutment (160) in the first direction (Z) is the second predetermined end face (161). The abutment (160) has a positioning groove (163), a first ventilation groove (164) and a second ventilation groove (165) on the second predetermined end face (161). The first ventilation groove (164) and the second ventilation groove (165) are located on opposite sides of the positioning groove (163) in the second direction (X) and are respectively connected to the positioning groove (163). The abutment (160) also has a light-transmitting hole (166) that runs through the first direction (Z) on the bottom surface of the positioning groove (163). The positioning groove (163) and the light-transmitting hole (166) together form the second sub-cavity (167). Wherein, the first predetermined end face (153) and the second predetermined end face (161) are in contact, the flange (152) is inserted into the positioning groove (163), the height of the flange (152) protruding from the first predetermined end face (153) is less than the depth of the positioning groove (163) recessed into the second predetermined end face (161), the portion of the connection between the first ventilation groove (164) and the positioning groove (163) not blocked by the flange (152) forms the first air inlet (121), and the portion of the connection between the second ventilation groove (165) and the positioning groove (163) not blocked by the flange (152) forms the second air inlet (131).

9. The protective cover assembly (100) as claimed in claim 8, characterized in that, The main body (151) has a first sub-flow channel (154) and a second sub-flow channel (156). The first sub-flow channel (154) forms a first opening (155) on the first predetermined end face (153), and the second sub-flow channel (156) forms a second opening (157) on the first predetermined end face (153). The first opening (155) faces the first vent groove (164), and the walls of the first predetermined end face (153) and the first vent groove (164) are surrounded by... A third sub-channel (168) is formed. The first sub-channel (154) and the third sub-channel (168) together form the first air intake channel (120). The second opening (157) is directly opposite the second ventilation groove (165). The first predetermined end face (153) and the wall of the second ventilation groove (165) form a fourth sub-channel (169). The second sub-channel (156) and the fourth sub-channel (169) together form the second air intake channel (130).

10. A laser welding device, characterized in that, The laser welding equipment has a first direction (Z), and the laser welding equipment includes: Base (200); A protective cover assembly (100) is movably disposed on the base (200) along the first direction (Z), and the protective cover assembly (100) is the protective cover assembly (100) according to any one of claims 1-9; An elastic element (500) is elastically clamped between the base (200) and the protective cover assembly (100) along the first direction (Z).

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