Welding fixture, welding equipment and welding method

Abstract

The invention discloses a welding clamp, welding equipment and a welding method.The welding clamp is used for welding a film material and a product, the welding clamp comprises a press-fitting piece, the press-fitting piece is provided with a press-fitting face, the press-fitting face is used for attaching and pressing the side, back to the product, of the film material, the press-fitting face is provided with an irradiation channel, and the irradiation channel penetrates through the press-fitting piece; and the laser irradiates the film material after penetrating through the irradiation channel. The welding method comprises a press-fitting step, specifically, the press-fitting piece presses the film material to the product, and the press-fitting face is attached to and tightly presses the film material; a cutting step: cutting the film material to form a cutting seam which is located in the irradiation channel; and a welding step: laser passes through the irradiation channel and then irradiates the film material and the product to form a welding seam, and the welding seam is arranged around the cutting seam. According to the welding clamp, the welding equipment and the welding method, the welding efficiency and the welding quality can be improved at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and in particular to a welding fixture, welding equipment and a welding method. Background Art

[0002] Mylar film is a commonly used material on batteries that protects the positive and negative electrodes.

[0003] When producing batteries, the mylar film can be welded and fixed to the product by hot melt welding or laser welding.

[0004] Hot melt welding is performed by combining extrusion and heat conduction, that is, the mylar film is melted by heat, and the mylar film is squeezed and adhered to the product to be welded.

[0005] Laser welding is a process in which the interface between the mylar film and the product is irradiated with a laser, causing the layer of the mylar film that fits the product to melt and weld it to the product to be welded.

[0006] However, hot-melt welding is inefficient and prone to quality problems such as wire drawing, while laser welding produces overflow, that is, the melted material overflows to areas outside the welding position, affecting the yield of subsequent processes and making it difficult to strike a balance between welding efficiency and welding quality. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a welding fixture that can improve welding efficiency and welding quality at the same time.

[0008] The present invention also provides a welding device having the welding fixture.

[0009] The present invention also provides a welding method using the above welding equipment.

[0010] According to the first aspect of the present invention, a welding fixture is used to weld a film material to a product. The welding fixture includes a pressing part, which has a pressing surface. The pressing surface is used to fit and press the side of the film material facing away from the product. The pressing surface is provided with an irradiation channel, which runs through the pressing part. The laser irradiates the film material after passing through the irradiation channel.

[0011] The welding fixture according to the embodiment of the present invention has at least the following beneficial effects: The present invention provides a pressing part with a pressing surface. Therefore, when a film material such as a Mylar film needs to be welded, the pressing surface squeezes the film material, which helps to reduce the possibility of the melted material and the gas generated by the melt overflowing to the periphery of the pressing surface, which is beneficial to improving the welding quality.

[0012] The present invention sets an irradiation channel so that the laser irradiates the film material after passing through the irradiation channel, thereby limiting the laser welding area to the inside or inner side of the pressing surface, which does not affect the welding and can also utilize the pressing surface to squeeze the film material to prevent the molten material and the gas generated by the melting from overflowing to the outside of the pressing surface, thereby improving the welding quality.

[0013] The present invention uses laser for welding, thereby avoiding direct heating of the press-fitted parts and the problem of wire drawing of the film material, thus overcoming the defects caused by hot-melt welding.

[0014] The present invention uses laser for welding to directly heat the position to be welded, thereby reducing the time consumed by heat conduction, thereby improving welding efficiency, and further, can simultaneously improve welding quality and welding efficiency.

[0015] The present invention also provides a welding device having the above-mentioned beneficial effects.

[0016] According to the welding fixture of the first aspect of the present invention, the welding fixture includes a press-fitting mechanism, the press-fitting mechanism includes a liftable press-fitting seat, and the press-fitting part is detachably arranged at the bottom of the press-fitting seat.

[0017] According to the welding fixture of the first aspect of the present invention, the press-fit seat is provided with a mounting groove, the mounting groove is open downward, the mounting groove is used to install the press-fit part, and the bottom of the mounting groove is provided with a through hole connected to the irradiation channel, and the laser irradiates the film material after passing through the through hole and the irradiation channel.

[0018] In the welding fixture according to the first aspect of the present invention, the pressing surface of the pressing part is higher than the installation groove; And / or, one side of the installation groove is open.

[0019] According to the welding fixture of the first aspect of the present invention, the bottom of the mounting groove is provided with a mounting hole for mounting the press-fit part; And / or, the inner surface of the mounting groove matches the outer contour of the press-fit part.

[0020] According to the welding fixture of the first aspect of the present invention, the pressing part is provided with a connecting groove, the connecting groove is located on the side of the pressing part facing away from the pressing surface, the connecting groove is connected to the irradiation channel, and the connecting groove is open on the side away from the irradiation channel.

[0021] According to the welding fixture of the first aspect of the present invention, the pressing surface is in a U-shape.

[0022] A welding device according to an embodiment of the second aspect of the present invention comprises any one of the welding fixtures described above.

[0023] According to a third aspect of the present invention, a welding method is performed using the welding equipment described above. The welding method includes: A pressing step, wherein the pressing member presses the film material toward the product, and the pressing surface fits and presses the film material; In the welding step, the laser irradiates the film material and the product through the irradiation channel to form a welding seam.

[0024] The welding method according to the embodiment of the present invention has at least the following beneficial effects: The present invention limits the welding position within the irradiation channel by applying the above-mentioned welding equipment, thereby preventing the molten material and the gas generated by the welding from overflowing to the pressing surface and the area outside the pressing surface, which is beneficial to improving the welding quality.

[0025] According to the welding method of the third aspect of the embodiment of the present invention, a cutting step is provided between the pressing step and the welding step, wherein the cutting step cuts the film material to form a cutting seam in the film material, and the cutting seam is located in the irradiation channel.

[0026] In addition to the beneficial effects produced by using welding equipment, the present invention also allows the molten material and the gas generated by the melting to flow toward the cutting seam by setting a cutting step, thereby reducing the material and gas flowing toward the pressing surface, and further reducing the risk of material and gas overflowing from the pressing surface.

[0027] At the same time, the gas generated by melting will be ejected from the cutting seam, making the film material fit the product and avoiding bubbling. Meanwhile, the material solidified at the cutting seam will connect the film material with the product and improve the welding strength.

[0028] At the same time, a cutting step is arranged between the pressing step and the welding step, and the pressing surface can also prevent the material from overflowing due to cutting, thereby facilitating the cutting of the film material and simplifying the process.

[0029] According to the welding method of the embodiment of the third aspect of the present invention, in the welding step, the welding seam is arranged around the cutting seam.

[0030] According to the welding method of the third aspect of the present invention, the cutting of the film material comprises: laser irradiation and cutting of the film material; And / or, the cutting seam is in a straight line shape.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of a welding fixture according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the press-fitting part of the welding fixture; Figure 3 for Figure 1 Schematic diagram of the welding fixture in use; Figure 4 For use Figure 1 Workflow diagram of welding method of welding fixture; Figure 5 For use Figure 4 Schematic diagram of welding effect of welding method.

[0034] Reference numerals: film material 100 ; product 110 ; press-fitting part 120 ; press-fitting surface 130 ; irradiation channel 140 ; ​​press-fitting seat 150 ; mounting groove 160 ; through-hole 170 ; mounting hole 180 ; connecting groove 190 ; cutting seam 200 ; welding seam 210 ; power part 220 ; base 230 . DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it is necessary to understand that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of first and second, this is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation, connection and connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The welding fixture, welding equipment and welding method according to the embodiments of the present invention are described below with reference to the accompanying drawings.

[0040] Reference Figure 1 and Figure 2 , the present invention aims to provide an embodiment of a welding fixture.

[0041] In this embodiment, the welding fixture includes Figure 1 The press-fit mechanism shown and Figure 3 The base 230 shown in the figure is used for the product 110 to be welded and the film material 100. The film material 100 is located on the side of the product 110 to be welded that is away from the base 230. The pressing mechanism is used to press the film material 100 toward the product 110 to be welded, so that the film material 100 is close to the product 110 to be welded. Therefore, when welding is performed, the molten material can firmly connect the film material 100 and the product 110 to be welded.

[0042] Reference Figure 1 As for the press-fitting mechanism, the press-fitting mechanism includes a liftable press-fitting seat 150 and a power member 220 for driving the press-fitting seat 150 to lift and lower. The power member 220 can be a cylinder, etc. The cylinder moves quickly, has low manufacturing cost, and is easy to implement.

[0043] Reference Figure 1 and Figure 2 At the bottom of the press-fitting seat 150, a press-fitting part 120 is arranged. The press-fitting part 120 has a press-fitting surface 130. The press-fitting surface 130 is used to fit and press the side of the film material 100 facing away from the product 110. The press-fitting surface 130 is provided with an irradiation channel 140. The irradiation channel 140 runs through the press-fitting part 120. The laser irradiates the film material 100 after passing through the irradiation channel 140.

[0044] In summary, the present invention provides a pressing part 120 so that the pressing part 120 has a pressing surface 130. Therefore, when it is necessary to weld a film material 100 such as a mylar film, the pressing surface 130 squeezes the film material 100, which helps to reduce the possibility of the melted material and the gas generated by the melt overflowing to the periphery of the pressing surface 130, which is beneficial to improving the welding quality.

[0045] The present invention sets an irradiation channel 140 so that the laser irradiates the film material 100 after passing through the irradiation channel 140, thereby limiting the laser welding area to the inside or inner side of the pressing surface 130, which does not affect the welding, and can also use the pressing surface 130 to squeeze the film material 100 to prevent the melted material and the gas generated by the melting from overflowing to the outside of the pressing surface 130, thereby improving the welding quality.

[0046] The present invention uses laser welding to avoid direct heating of the press-fitted part 120 and the problem of wire drawing of the film material 100, thereby overcoming the defects caused by hot-melt welding.

[0047] The present invention uses laser for welding to directly heat the position to be welded, thereby reducing the time consumed by heat conduction, thereby improving welding efficiency, and further, can simultaneously improve welding quality and welding efficiency.

[0048] It can be understood that this embodiment provides a welding clamp that presses from top to bottom, but the welding clamp of this embodiment is intended to squeeze the film material 100 and the product 110 together to meet the needs of welding. Therefore, the welding clamp of the present invention can also be clamped in the horizontal direction, or clamped from bottom to top, which is determined according to actual welding needs.

[0049] In this embodiment, the press-fit seat 150 is plate-shaped, and the bottom area of ​​the press-fit seat 150 is relatively large, so more press-fit parts 120 can be arranged as needed, and more positions can be welded during one lifting process of the press-fit mechanism, thereby improving welding efficiency.

[0050] In this embodiment, the power part 220 and the pressing part 120 are located on both sides of the plate-shaped pressing seat 150 in the width direction, which can shorten the distance between the power part 220 and the pressing part 120 and reduce the torque, so that the pressing surface 130 can fit and press the film material 100 evenly and tightly, avoiding the formation of a gap between the film material 100 and the product 110, which would cause the molten material and the gas generated by the melting to overflow.

[0051] In the length direction of the press-fit seat 150 , more press-fit parts 120 can be arranged to provide multiple welding positions and improve welding efficiency.

[0052] In some specific embodiments of the present invention, the press-fitting member 120 may be detachably disposed at the bottom of the press-fitting seat 150 .

[0053] It is easy to understand that in this embodiment, the press-fitting part 120 is detachably arranged at the bottom of the press-fitting seat 150. Therefore, maintenance can be carried out by replacing the press-fitting part 120, and the size and coverage area of ​​the press-fitting surface 130 can be changed by replacing different press-fitting parts 120 to meet different welding requirements. At the same time, there is no need to disassemble the press-fitting seat 150 and the power part 220, thereby reducing the workload of debugging and maintenance.

[0054] At the same time, the material of the press-fitting part 120 can be different from that of the press-fitting seat 150 to meet the special requirements of the contact film material 100 and avoid affecting the quality of the product 110.

[0055] In some specific embodiments of the present invention, the press-fit seat 150 can be provided with a mounting groove 160, which is open downward and used to install the press-fit part 120. The bottom of the mounting groove 160 is provided with a through hole 170 connected to the irradiation channel 140. The laser irradiates the film material 100 after passing through the through hole 170 and the irradiation channel 140.

[0056] It is easy to understand that, in this embodiment, by providing the installation groove 160 , the press-fitting component 120 can be accurately installed, ensuring that the position of the press-fitting surface 130 meets the design requirements.

[0057] In some specific embodiments of the present invention, the inner surface of the mounting groove 160 can be matched with the outer contour of the pressing part 120 to simplify the positioning of the pressing part 120 and reduce the occupancy of the internal entity of the pressing part 120, especially to avoid damaging the integrity of the pressing surface 130 and to avoid affecting the quality of the pressing surface 130 fitting and pressing the film material 100.

[0058] In some specific embodiments of the present invention, the installation groove 160 can be a rectangular groove, so the side wall of the installation groove 160 can be used to position the press-fitting component 120, thereby improving the directional accuracy and position accuracy of the installation.

[0059] In some specific embodiments of the present invention, the installation groove 160 can be a rectangular groove, which can also facilitate the determination of the direction of the press-fitting part 120 and avoid incorrect installation.

[0060] In some specific embodiments of the present invention, the edges of the press-fitting part 120 can be made rounded to avoid the need for the installation groove 160 to be a right angle at the corner, thereby reducing the difficulty of processing. At the same time, the outer contour of the press-fitting part 120 has a smooth transition, which is beneficial to protecting the operator.

[0061] In some specific embodiments of the present invention, a process hole can be provided at the corner of the installation groove 160 to avoid direct connection between the two vertical side walls of the installation groove 160. The process hole reserves space for accommodating the edges and corners of the press-fit part 120, thereby reducing changes to the press-fit part 120 and facilitating increasing the press-fit surface 130.

[0062] In some specific embodiments of the present invention, the mounting groove 160 can be a circular groove or a polygonal groove to meet different usage requirements.

[0063] In some specific embodiments of the present invention, the pressing surface 130 of the pressing part 120 can be made higher than the installation groove 160, that is, the pressing part 120 protrudes downward relative to the pressing seat 150, so that the pressing surface 130 contacts the film material 100 first, reducing the pressure on other positions of the film material 100, and facilitating continuous production.

[0064] In some specific embodiments of the present invention, the height of the protrusion can be set to about 2 mm, and the height of the protrusion can be controlled within a reasonable range to ensure the welding quality.

[0065] In some specific embodiments of the present invention, one side of the mounting groove 160 may be opened.

[0066] It is easy to understand that one side of the installation groove 160 is open, which also allows the press-fitting part 120 to be disassembled and assembled from the open position, reducing the difficulty of installation. At the same time, the specifications of the press-fitting part 120 along the open direction of one side of the installation groove 160 are not restricted, and different press-fitting parts 120 can be replaced during use to meet different welding requirements.

[0067] In some specific embodiments of the present invention, the bottom of the mounting groove 160 can be provided with a mounting hole 180 for mounting the press-fit part 120. Therefore, the press-fit part 120 can be installed by screws passing through the press-fit part 120 and connecting the mounting hole 180, that is, the installation is completed by installing the screws from bottom to top.

[0068] In some specific embodiments of the present invention, the installation can be completed by connecting the press-fit part 120 after the screw passes through the installation hole 180, that is, the installation is completed by installing the screw from top to bottom, which facilitates the replacement of the press-fit part 120 and reduces the difficulty of disassembly and assembly.

[0069] At the same time, the thickness of the pressing part 120 and the depth of the screw inserted into the pressing part 120 can be reasonably designed to avoid damaging the integrity of the pressing surface 130 and affecting the quality of the extruded film material 100 of the pressing surface 130.

[0070] In some specific embodiments of the present invention, the pressing part 120 can be provided with a connecting groove 190, which is located on the side of the pressing part 120 facing away from the pressing surface 130, and the connecting groove 190 is connected to the irradiation channel 140, and the side of the connecting groove 190 away from the irradiation channel 140 is open.

[0071] It is easy to understand that the present embodiment uses the connecting groove 190, which can, on the one hand, reduce the weight of the pressed part 120 and reduce the manufacturing cost. On the other hand, the connecting groove 190 is open on the side away from the irradiation channel 140, which is convenient for observing or detecting the welding quality from an oblique direction without affecting the laser welding work. It is also convenient for arranging dust collection mechanisms, which is beneficial to improving the reliability and environmental protection of the welding process.

[0072] At the same time, the irradiation channel 140 can be made into a hole at the bottom of the connecting groove 190, that is, the irradiation channel 140 is smaller than the connecting groove 190. Therefore, it is more practical to set irradiation channels 140 of different sizes and reduce the amount of reprocessing. For example, the irradiation channel 140 can be directly enlarged without processing to form a solid body of the connecting groove 190, thereby reducing the difficulty of modification.

[0073] In some specific embodiments of the present invention, the pressing surface 130 can be made into a U-shaped shape, so that the outer contour of the pressing part 120 is also made rectangular, and the contour of the irradiation channel 140 is also made rectangular, so that the junction of the pressing surface 130 and the irradiation channel 140 forms a larger welding area, which can meet different welding needs.

[0074] In the present invention, the press-fit surface 130 is a complete ring, but on the premise of meeting the welding requirements, the press-fit surface 130 may also have partial defects or gaps.

[0075] The present invention also aims to provide an embodiment of a welding device, and the welding device of this embodiment includes a laser generating mechanism and the above-mentioned welding fixture.

[0076] Reference Figure 3 , the working principle of welding equipment can be as follows: The product 110 to be welded and the film material 100 are stacked on the base 230. The product 110 to be welded and the film material 100 can be in block form or in the form of a strip. The strip form can reduce the workload of loading and unloading materials and improve welding efficiency.

[0077] Then, the power member 220 drives the press-fit seat 150 to descend, and the press-fit seat 150 drives the press-fit member 120 to descend. The press-fit surface 130 of the press-fit member 120 fits and presses the film material 100 and squeezes the film material 100, so that the film material 100 is close to the product 110 to be welded.

[0078] Then, the laser generating mechanism generates laser light, and the laser light irradiates the film material 100 from the irradiation channel 140 , so that the welding position is located inside the pressing area of ​​the press-fitting surface 130 .

[0079] In this embodiment, the film material 100 is a two-layer film, including a light-transmitting layer and an absorption layer. The absorption layer contacts the product 110. The laser passes through the light-transmitting layer and irradiates the junction between the absorption layer and the product 110, so that the absorption layer and the product 110 melt at the junction.

[0080] exist Figure 4 In the figure, the dotted line is used to indicate the laser, which is convenient for understanding the laser welding process.

[0081] After the laser welding is completed, the power member 220 drives the press-fit seat 150 to rise, so that the press-fit surface 130 is separated from the film material 100, and the welded product 110 can be moved to facilitate the next welding.

[0082] In order to prevent the melted material and the gas generated by the melt from passing through the press-fit surface 130 and overflowing outside the press-fit surface 130 during welding, Figure 4 This embodiment also provides a welding method to overcome the above defects and improve welding quality.

[0083] Specifically, the welding method includes a press-fitting step S100, a cutting step S200 and a welding step S300, and the press-fitting step S100, the cutting step S200 and the welding step S300 are performed sequentially.

[0084] In detail, in the press-fitting step S100 , a welding fixture of a welding device is used so that the press-fitting part 120 presses the film material 100 toward the product 110 , and the press-fitting surface 130 fits and presses the film material 100 .

[0085] In detail, in the cutting step S200 , the film material 100 is cut to form a cutting slit 200 , and the cutting slit 200 is located in the irradiation channel 140 , that is, the portion of the film material 100 located in the irradiation channel 140 is cut.

[0086] In some specific embodiments of the present invention, the length and profile of the cutting seam 200 should be properly set to prevent the cutting seam 200 from extending to the pressing surface 130, to prevent overflowing material from adhering to the pressing part 120, and to prevent the welding quality from being affected.

[0087] In some specific embodiments of the present invention, a laser beam with greater energy and faster movement speed can be used to process the cutting seam 200 without physical contact and reducing the modification of welding equipment.

[0088] Reference Figure 5In some specific embodiments of the present invention, the cutting seam 200 can be made into a straight line shape. Preferably, the cutting seam 200 is located in the middle of the irradiation channel 140 and extends along the length direction of the cross section of the irradiation channel 140. This can make the distance difference between each welding position and the cutting seam 200 smaller, so that the molten material and the gas generated by the melting can overflow in a balanced manner, avoiding overflowing toward the pressing surface 130 due to obstruction.

[0089] In some specific embodiments of the present invention, the cutting seam 200 is in other shapes, such as a curve, a frame line, etc., to meet actual needs.

[0090] In the welding step S300, the laser generating mechanism generates a laser that meets the welding requirements. The laser passes through the irradiation channel 140 and irradiates the film material 100 and the product 110 to form a welding seam 210, thereby completing the welding.

[0091] The welding seam 210 is arranged around the cutting seam 200. The shape of the welding seam 210 arranged around the cutting seam 200 can be referred to Figure 5 .

[0092] In some specific embodiments of the present invention, the welding seam 210 and the cutting seam 200 may be arranged side by side or perpendicular to each other to meet actual welding requirements.

[0093] In summary, in addition to the beneficial effects produced by using welding equipment, the present invention also allows the molten material and the gas generated by the melting to flow toward the cutting seam 200 by setting the cutting step S200, thereby reducing the material and gas flowing toward the pressing surface 130, and further reducing the risk of material and gas overflowing from the pressing surface 130.

[0094] At the same time, the gas generated by melting will be ejected from the cutting seam 200, so that the film material 100 fits the product 110 to avoid bubbling, and the material solidified at the cutting seam 200 will connect the film material 100 and the product 110 to improve the welding strength.

[0095] At the same time, a cutting step S200 is arranged between the pressing step S100 and the welding step S300, and the pressing surface 130 can also prevent the material from overflowing due to cutting, thereby facilitating the cutting of the film material and simplifying the process.

[0096] In some specific embodiments of the present invention, both layers of the film material 100 may be cut open to facilitate the outflow of the melted material and the gas generated by the melt.

[0097] In some specific embodiments of the present invention, a cutting seam 200 can be pre-processed on the film material, and then the pressing step S100 and the welding step S300 are performed to shorten the welding cycle. That is, when the pressing step S100 and the welding step S300 are performed, the film material can be cut in the previous process to improve the output efficiency.

[0098] In the description of this specification, the description with reference to the terms "one embodiment, some embodiments, illustrative embodiments, examples, specific examples or some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0099] The terms "first, second, third, fourth", etc. (if any) in the specification and claims of this application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that shown or described herein.

[0100] It should also be noted that in the description of this specification, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0101] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may also include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0102] Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0103] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Welding fixture, characterized in that, For welding a film material (100) to a product (110), the welding fixture includes a pressing member (120), the pressing member (120) has a pressing surface (130), and the pressing surface (130) is used to fit and press the side of the film material (100) facing away from the product (110). The pressing surface (130) is provided with an irradiation channel (140), the irradiation channel (140) penetrates through the pressing member (120), and the laser irradiates the film material (100) after passing through the irradiation channel (140).

2. The welding fixture according to claim 1, characterized in that: The welding fixture includes a pressing mechanism, and the pressing mechanism includes a liftable pressing seat (150), and the pressing member (120) is detachably arranged at the bottom of the pressing seat (150).

3. The welding fixture according to claim 2, characterized in that: The pressing seat (150) is provided with a mounting groove (160), the mounting groove (160) opens downward, the mounting groove (160) is used for mounting the pressing member (120), and a through hole (170) communicating with the irradiation channel (140) is arranged at the bottom of the mounting groove (160). The laser irradiates the film material (100) after passing through the through hole (170) and the irradiation channel (140).

4. The welding fixture according to claim 3, characterized in that: The pressing surface (130) of the pressing member (120) is higher than the mounting groove (160); and / or, one side of the mounting groove (160) is open.

5. The welding fixture according to claim 3, characterized in that: The bottom of the mounting groove (160) is provided with a mounting hole (180) for mounting the pressing member (120); and / or, the inner surface of the mounting groove (160) matches the outer contour of the pressing member (120).

6. The welding fixture according to claim 1, characterized in that: The pressing member (120) is provided with a connecting groove (190), the connecting groove (190) is located on the side of the pressing member (120) facing away from the pressing surface (130), the connecting groove (190) communicates with the irradiation channel (140), and one side of the connecting groove (190) away from the irradiation channel (140) is open.

7. The welding fixture according to claim 1, characterized in that: The pressing surface (130) is in a shape of a double square.

8. Welding equipment, characterized in that Including the welding fixture according to any one of claims 1 to 7.

9. A welding method, characterized in that: Using the welding equipment according to claim 8 for welding, the welding method includes:[[]] A pressing step, the pressing member (120) presses the film material (100) against the product (110), and the pressing surface (130) fits and presses the film material (100); A welding step, the laser irradiates the film material (100) and the product (110) after passing through the irradiation channel (140) to form a weld seam (210).

10. The welding method according to claim 9, characterized in that: A cutting step is arranged between the pressing step and the welding step. The cutting step cuts the film material (100), and the film material (100) forms a cutting seam (200), and the cutting seam (200) is located in the irradiation channel (140).

11. The welding method according to claim 10, characterized in that: In the welding step, the weld seam (210) is arranged around the cutting seam (200).

12. The welding method according to claim 10, characterized in that: The cutting of the film material (100) includes irradiating and cutting the film material (100) with a laser; and / or, the cutting seam (200) is in a shape of a straight line.

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