Bending device and welding equipment

Abstract

The utility model relates to a bending device and welding equipment. The bending device comprises a bending mechanism and a laser cleaning mechanism. Wherein the bending mechanism comprises a first bending piece and a second bending piece which are arranged at an interval; the laser cleaning mechanism comprises a laser transmitter, and the laser transmitter is arranged on the side, away from the to-be-bent piece, of the first bent piece. And / or the laser transmitter is arranged on the side, away from the to-be-bent piece, of the second bent piece. The bending mechanism in the bending device can be used for bending the to-be-bent piece, and meanwhile, the laser cleaning mechanism can be used for cleaning the welding area on the to-be-bent piece, so that the subsequent welding quality of the to-be-bent piece is ensured. Namely, the bending device can clean the to-be-bent part in the bending process of the to-be-bent part at the same time, so that the bending process and the cleaning process of the to-be-bent part can be carried out at the same time, and the production efficiency of the to-be-bent part can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending, in particular to a bending device and welding equipment. Background Art

[0002] During the bending process, especially when bending the tabs in the battery, the tab surface may sometimes become dirty. In addition, impurities such as the electrolyte in the previous process may also adhere to the tab surface, causing the tab to become dirty, thereby affecting the subsequent welding quality of the tab and the cap. Utility Model Content

[0003] Based on this, it is necessary to provide a bending device and welding equipment that can improve the above defects in order to solve the problem of tab contamination in the bending device of the prior art.

[0004] On one hand, the present application provides a bending device for bending a workpiece to be bent, the bending device comprising:

[0005] A bending mechanism comprising a first bending member and a second bending member spaced apart from each other, wherein the first bending member and the second bending member are provided with a convex portion and a concave portion on two surfaces close to each other, respectively, and the first bending member and the second bending member can be brought close to each other so that the convex portion is inserted into the concave portion to achieve bending of the member to be bent; and

[0006] The laser cleaning mechanism includes a laser emitter, which is arranged on the side of the first bending member away from the member to be bent, and a first hollow portion is provided on the first bending member; and / or the laser emitter is arranged on the side of the second bending member away from the member to be bent, and a second hollow portion is provided on the second bending member.

[0007] By setting up a bending mechanism and a laser cleaning mechanism, the laser emitter in the laser cleaning mechanism can emit laser to clean the part to be bent during the process of the bending device bending the part to be bent, remove impurities such as electrolyte on the surface of the part to be bent, and ensure the subsequent welding quality of the part to be bent; that is, the bending device in the present application can simultaneously clean the part to be bent during the process of bending the part to be bent, so that the two processes of bending and cleaning the part to be bent can be carried out at the same time, which can improve the production efficiency of the part to be bent.

[0008] In some embodiments, the bending device further includes a first frame, and the first bending member is movably disposed on the first frame along a first preset direction, and the first preset direction forms a certain angle with the horizontal direction.

[0009] In some embodiments, the protruding direction of the convex portion is the first preset direction, and the recessed direction of the concave portion is the first preset direction.

[0010] In some embodiments, the first frame is provided with a first guide rail extending along the first preset direction, the first bending member is provided with a first slider, and the first slider is slidably provided on the first guide rail; or

[0011] The first bending member is provided with a first guide rail extending along the first preset direction, and the first frame is provided with a first slider, which is slidably provided on the first guide rail.

[0012] In some embodiments, the bending device further includes a second frame, the second bending member is fixedly disposed on the second frame, and the concave portion and the convex portion are correspondingly disposed along the first preset direction.

[0013] In some embodiments, the bending device further includes a second frame, and the second bending member is movably disposed on the second frame along a second preset direction.

[0014] In some embodiments, the second preset direction forms a certain angle with the horizontal direction, and the angle between the first preset direction and the horizontal direction and the angle between the second preset direction and the horizontal direction are complementary angles.

[0015] In some embodiments, the laser cleaning mechanism includes a protective cover, which is provided on the laser emitter, and a through hole is provided on a side of the protective cover close to the part to be bent.

[0016] In some embodiments, the bending device further includes a dust removal mechanism, which is disposed at the upper end of the bending mechanism, and a dust suction port of the dust removal mechanism is disposed corresponding to the part to be bent.

[0017] In another aspect, the present application provides a welding device, comprising:

[0018] The bending device mentioned above; and

[0019] The welding device is arranged downstream of the bending device and is used for welding the workpiece to be bent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of the bending device in the embodiment of this application;

[0021] Figure 2 for Figure 1 A partial enlarged view of position A in the middle;

[0022] Figure 3 This is a schematic diagram of the bending device before bending in an embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of the bending device in the embodiment of the present application when bending;

[0024] Figure 5 This is a schematic structural diagram of the first bending member in an embodiment of the present application;

[0025] Figure 6 for Figure 5 A partial enlarged view of position B in the middle;

[0026] Figure 7 This is a schematic structural diagram of the second bending member in an embodiment of the present utility model;

[0027] Figure 8 This is a schematic diagram of the structure of the welding equipment in the embodiment of the present application.

[0028] Description of reference numerals:

[0029] 1 Bending device; 11 Bending mechanism, 111 First bending member, 1111 Protrusion, 1112 First hollow portion, 112 Second bending member, 1121 Concave portion, 113 First slider, 114 Second slider; 12 Laser cleaning mechanism, 121 First laser emitter, 122 Protective cover, 1221 Through hole; 13 First rack, 131 First guide rail; 14 Second rack, 141 Second guide rail; 15 Dust removal mechanism, 151 Dust suction port; a1 Angle between the first preset direction and the horizontal direction; a2 Angle between the second preset direction and the horizontal direction;

[0030] 2. Parts to be bent;

[0031] 3. Welding device;

[0032] S1 first preset direction;

[0033] S2 second preset direction;

[0034] X horizontal direction. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 should not be understood as a limitation to the present invention.

[0037] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0041] In order to understand the embodiments of the present application more clearly, the following Figures 1 to 8 The embodiments of the present application are described in detail.

[0042] like Figures 1 to 7 As shown, the present application provides a bending device 1 for bending a workpiece 2 to be bent, and the bending device 1 includes a bending mechanism 11 and a laser cleaning mechanism 12. The bending mechanism 11 includes a first bending member 111 and a second bending member 112 arranged at intervals, and a convex portion 1111 and a concave portion 1121 matching the convex portion 1111 are respectively provided on two surfaces of the first bending member 111 and the second bending member 112 close to each other. The first bending member 111 and the second bending member 112 can be close to or away from each other to achieve the bending of the workpiece 2 to be bent; the laser cleaning mechanism 12 includes a laser emitter 121, the laser emitter 121 is provided on the side of the first bending member 111 away from the workpiece 2 to be bent, and the first bending member 111 is provided with a first hollow portion 1112; and / or the laser emitter 121 is provided on the side of the second bending member 112 away from the workpiece 2 to be bent, and the second bending member 112 is provided with a second hollow portion.

[0043] The part to be bent 2 can be any component that needs to be bent and welded. For example, in some embodiments, the part to be bent 2 can be a tab in a battery. After bending, the tab and the cap can be tightly fitted together, and the laser cleaning mechanism 12 can clean the surface of the tab to ensure the welding quality of the tab and the cap.

[0044] A convex portion 1111 and a concave portion 1121 are respectively provided on the two surfaces of the first bending member 111 and the second bending member 112 that are close to each other. That is, the convex portion 1111 and the concave portion 1121 are respectively provided on the surfaces of the first bending member 111 and the second bending member that are close to each other, and the shape of the convex portion 1111 corresponds to the concave portion 1121 to ensure that the convex portion 1111 can be inserted into the concave portion 1121. Therefore, when the first bending member 111 and the second bending member 112 are close to each other, the convex portion 1111 will be inserted into the concave portion 1121, thereby bending the workpiece 2 to be bent between the first bending member 111 and the second bending member 112. It should be noted that the specific shape and number of the convex portion 1111 can be designed according to the bending requirements of the workpiece 2 to be bent, and this embodiment of the application does not impose any restrictions on this.

[0045] Specifically, before bending, the workpiece 2 to be bent is placed between the first bending piece 111 and the second bending piece 112. During bending, the first bending piece 111 and the second bending piece 112 approach each other, so that when the convex portion 1111 on the first bending piece 111 is inserted into the concave portion 1121, the workpiece 2 to be bent is pushed into the concave portion 1121. As a result, the bending area of ​​the workpiece 2 to be bent is limited between the convex portion 1111 and the concave portion 1121, thereby achieving bending of the workpiece 2 to be bent.

[0046] In some embodiments, when the concave portion 1121 is away from the edge of the second bending member 112, the concave portion 1121 can be formed by the surface of the second bending member 112 close to the first bending member 111 being recessed inward. In other embodiments, such as Figure 2 As shown, when the recess 1121 is located at the edge of the second bending piece 112 , the recess 1121 may be formed by a notch at the edge of the second bending piece 112 .

[0047] The first bending member 111 and the second bending member 112 can move closer to or farther from each other. Specifically, in some embodiments, one of the first bending member 111 and the second bending member 112 can move relative to each other, thereby adjusting the relative position between the first bending member 111 and the second bending member 112. In other embodiments, both the first bending member 111 and the second bending member 112 can move relative to each other, thereby adjusting the relative position between the first bending member 111 and the second bending member 112. The relative position adjustment of the first bending member 111 and the second bending member 112 can be achieved by a guide rail and slider mechanism, or by a gear rack mechanism, which is not limited in the embodiments of the present application.

[0048] The laser emitter 121 refers to a device that can emit laser. The emitted laser can clean the surface of the part to be bent 2, remove electrolytes, dust and other dirt on the surface of the part to be bent 2, prevent the part to be bent 2 from producing defects such as cold welds during subsequent welding processes, and improve the welding quality.

[0049] In some embodiments, the laser emitter 121 is arranged on the side of the first bending member 111 away from the part to be bent 2, and the first bending member 111 is provided with a first hollow portion 1112. By providing the first hollow portion 1112, the laser emitted by the laser emitter 121 can pass through the first bending member 111 and act on the surface of the part to be bent 2 close to the first bending member 111, and perform laser cleaning on the surface; in other embodiments, the laser emitter 121 is arranged on the side of the second bending member 112 away from the part to be bent 2, and the second bending member 112 is provided with a second hollow portion 1112. The hollow portion is provided with a second hollow portion so that the laser emitted by the laser emitter 121 can pass through the second bending member 112 and act on the surface of the part to be bent 2 close to the second bending member 112, so as to perform laser cleaning on the surface; in some further embodiments, the laser emitter 121 is simultaneously provided on the side of the first bending member 111 away from the part to be bent 2 and the side of the second bending member 112 away from the part to be bent 2, and the first hollow portion 1112 and the second hollow portion are respectively provided on the first bending member 111 and the second bending member 112 to achieve cleaning of the two surfaces of the part to be bent 2.

[0050] By providing the bending mechanism 11, when the first bending member 111 and the second bending member 112 approach each other, the convex portion 1111 will enter the concave portion 1121, thereby bending the workpiece 2 to be bent contained between the first bending member 111 and the second bending member 112; at the same time, the laser emitter 121 in the laser cleaning mechanism 12 can emit laser light to clean the welding area on the workpiece 2 to be bent, remove impurities such as electrolyte on the surface of the workpiece 2 to be bent, and ensure the subsequent welding quality of the workpiece 2 to be bent. In other words, the bending device 1 of the present application can simultaneously clean the workpiece 2 to be bent during the bending process, so that the two processes of bending and cleaning the workpiece 2 to be bent can be carried out simultaneously, which can improve the production efficiency of the workpiece 2 to be bent.

[0051] like Figure 1 、 5 As shown in FIG6 , in some embodiments, the bending device 1 further includes a first frame 13 , and the first bending member 111 is movably disposed on the first frame 13 along a first preset direction S1 , and the first preset direction S1 forms a certain angle with the horizontal direction X.

[0052] The first bending member 111 is movably arranged on the first frame 13 along the first preset direction S1. Specifically, the movable connection between the first bending member 111 and the first frame 13 can be achieved through a guide rail slider mechanism or a gear rack mechanism, which is not limited in this embodiment of the present application.

[0053] The first predetermined direction S1 is a direction that forms a predetermined angle with the horizontal direction X, i.e., an inclined direction. Specifically, the first predetermined direction S1 can be inclined upward or downward. By setting the first predetermined direction S1 as an inclined direction, when the bending position of the member 2 to be bent is accommodated within the groove (i.e., when the bending position of the member 2 to be bent is blocked by other parts along the horizontal direction), the first bending member 11 can avoid the blocking parts, thereby smoothly bending the member 2 to be bent.

[0054] By arranging the first bending member 111 movably along the first preset direction S1 on the first frame 13, the first bending member 111 can move along the first preset direction S1, so that the first bending member 111 and the second bending member 112 are close to each other to complete the bending of the member 2 to be bent.

[0055] like Figures 3 to 5 As shown, in some embodiments, the protruding direction of the convex portion 1111 is the first preset direction S1, and the recessed direction of the concave portion 1121 is the first preset direction S1.

[0056] The protruding direction of the convex portion 1111 and the concave direction of the concave portion 1121 are both set to the first preset direction S1. When the first bending member 111 moves along the first preset direction S1, the convex portion 1111 can be ensured to smoothly enter the concave portion 1121, avoiding interference between the two and ensuring the bending quality of the bending device 1.

[0057] like Figure 5 As shown, in some embodiments, a first guide rail 131 extending along a first preset direction S1 is provided on the first frame 13, and a first slider 113 is provided on the first bending member 111, and the first slider 113 is slidably provided on the first guide rail 131; or a first guide rail (not shown) extending along the first preset direction S1 is provided on the first bending member 111, and a first slider is provided on the first frame 13, and the first slider is slidably provided on the first guide rail. That is, one of the first guide rail 131 and the first slider 113 is provided on the first frame 13, and the other is provided on the first bending member 111, and the movement of the first slider 113 on the first guide rail 131 realizes the movement of the first bending member 111 relative to the first frame 13.

[0058] like Figure 1 and Figure 7 As shown, in some embodiments, the bending device 1 further includes a second frame 14, the second bending member 112 is fixedly disposed on the second frame 14, and the concave portion 1121 and the convex portion 1111 are correspondingly disposed along the first preset direction S1.

[0059] The second bending member 112 is fixedly mounted on the second frame 14, that is, there is no relative movement between the second bending member 112 and the second frame 14. During bending, the second bending member 112 remains stationary, while the first bending member 111 moves along the first preset direction S1 and approaches the second bending member 112, thereby achieving bending of the to-be-bent member 2. Specifically, the fixed connection between the second bending member 112 and the second frame 14 can be achieved by a detachable connection method such as bolt connection or clamping, or by a non-detachable connection method such as welding or bonding, and this embodiment of the present application is not limited thereto.

[0060] The recess 1121 and the protrusion 1111 are arranged correspondingly along the first preset direction S1, so as to ensure that when the first bending member 111 moves along the first preset direction S1, the protrusion 1111 can smoothly enter the recess 1121, avoiding interference between the two and ensuring the bending quality of the bending device 1.

[0061] like Figure 1 and Figure 7 As shown, in some embodiments, the bending device 1 further includes a second frame 14 , and the second bending member 112 is movably disposed on the second frame 14 along the second preset direction S2 .

[0062] The second bending member 112 is movably arranged on the second frame 14 along the second preset direction S2, that is, during the bending process, the first bending member 111 and the second bending member 112 can both move, thereby increasing the relative movement speed between the two, and further accelerating the bending speed of the part to be bent 2.

[0063] Specifically, the movable connection between the second bending member 112 and the second frame 14 can be achieved through a guide rail and slider mechanism. For example, in some embodiments, a second guide rail 141 extending along a second preset direction S2 is provided on the second frame 14, and a second slider 114 is provided on the second bending member 112, and the second slider 114 is slidably provided on the second guide rail 141; or a second guide rail (not shown in the figure) extending along the second preset direction S2 is provided on the second bending member 112, and a second slider is provided on the second frame 14, and the second slider is slidably provided on the first guide rail. That is, one of the second guide rail 141 and the second slider 114 is provided on the second frame 14, and the other is provided on the second bending member 112, and the movement of the second slider 114 on the second guide rail 141 is achieved to achieve the movement of the second bending member 112 relative to the second frame 14.

[0064] In some embodiments, the second predetermined direction S2 may be a horizontal direction, that is, when bending, the first bending member 111 moves in an inclined direction and the second bending member 112 moves in a horizontal direction, thereby changing the relative distance between the first bending member 111 and the second bending member 112, thereby achieving bending of the to-be-bent member 2. In other embodiments, the second predetermined direction S2 may also be an inclined direction at a certain angle to the horizontal direction, that is, when bending, the first bending member 111 and the second bending member 112 both move in an inclined direction to change the relative distance between the first bending member 111 and the second bending member 112, thereby achieving bending of the to-be-bent member 2.

[0065] like Figure 3 、 4 As shown in FIG7 , in some embodiments, the second preset direction S2 forms a certain angle with the horizontal direction X, and the angle a1 between the first preset direction S1 and the horizontal direction X is equal to the angle a2 between the second preset direction S2 and the horizontal direction X.

[0066] The second preset direction S2 forms a certain angle with the horizontal direction X, that is, when bending, the second bending member 112 moves along the inclined direction to change the relative distance between the first bending member 111 and the second bending member 112 to achieve bending of the to-be-bent member 2.

[0067] The angle a1 between the first preset direction S1 and the horizontal direction X and the angle a2 between the second preset direction S2 and the horizontal direction X are complementary angles, that is, when the first bending member 111 and the second bending member 112 move, they move along the two isosceles sides of the isosceles triangle respectively, which facilitates the adjustment of the moving distance and orientation of the two, ensures the smooth cooperation of the convex part 1111 and the concave part 1121, and accurately realizes the bending of the part 2 to be bent.

[0068] like Figure 1 、 Figure 5 and Figure 6 As shown, in some embodiments, the laser cleaning mechanism 12 includes a protective cover 122 , which is disposed on the laser emitter 121 , and a through hole 1221 is provided on one side of the protective cover 122 close to the workpiece 2 to be bent.

[0069] The through hole 1221 may be circular or square, and this embodiment of the application does not limit this.

[0070] By setting up a protective cover 122 and covering the laser emitter 121 inside the protective cover 122, impurities can be prevented from splashing onto the laser emitter 121 when cleaning the workpiece 2 to be bent, causing the laser emitted by the laser emitter 121 to be blocked and the energy to be reduced, thereby reducing the cleaning effect of the workpiece 2 to be bent.

[0071] like Figure 1 and Figure 2As shown, in some embodiments, the bending device 1 further includes a dust removal mechanism 15 , which is disposed at the upper end of the bending mechanism 11 , and a dust suction port 151 of the dust removal mechanism 15 is disposed corresponding to the workpiece 2 to be bent.

[0072] When the laser cleaning mechanism 12 cleans the bent part 2, the smoke and other impurities generated will flow upwards. Therefore, the dust removal mechanism 15 is arranged at the upper end of the bending mechanism 11 to facilitate the collection of the smoke and other impurities, thereby improving the dust removal effect.

[0073] The dust suction port 151 of the dust removal mechanism 15 is arranged corresponding to the workpiece 2 to be bent, which can ensure to the greatest extent that the suction force generated by the dust removal mechanism 15 can effectively act on the workpiece 2 to be bent, thereby improving the dust removal effect of the workpiece 2 to be bent.

[0074] By providing the dust removal mechanism 15 , impurities such as smoke can be removed during the laser cleaning process, preventing the impurities from falling back onto the surface of the workpiece 2 to be bent, thereby improving the cleaning effect of the workpiece 2 to be bent.

[0075] like Figure 8 As shown, on the other hand, the present application provides a welding device, which includes a bending device 1 and a welding device 3. The welding device 3 is arranged downstream of the bending device 1 and is used for welding the workpiece 2 to be bent.

[0076] The welding device 3 is arranged downstream of the bending device 1, that is, during the production process, the workpiece 2 to be bent first passes through the bending device 1, and then passes through the welding device 3 after completing bending and cleaning in the bending device 1, thereby improving the welding quality of the workpiece 2 to be bent in the welding device 2.

[0077] Specifically, such as Figures 1 to 8 As shown, before bending, the piece to be bent is placed between the first bending piece 111 and the second bending piece 112 .

[0078] During bending, the first bending member 111 and the second bending member 112 move toward each other, pressing the bent member 2 between them. The convex portion 1111 and the concave portion 1121 cooperate to achieve bending. Simultaneously, the laser emitter 121 of the laser cleaning mechanism 12 emits laser light, which passes through the through-hole 1221 in the protective cover 122 and the hollow portion of the bending mechanism 2 before impacting the bent member 2, cleaning it. During the cleaning process, the dust removal mechanism 15 is activated simultaneously or in advance to remove dust generated during the cleaning process.

[0079] After the bending is completed, the bent piece 2 is welded on the welding device 3 .

[0080] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A bending device for bending a workpiece, characterized in that: The bending device comprises: A bending mechanism comprising a first bending member and a second bending member spaced apart from each other, wherein the first bending member and the second bending member are provided with a convex portion and a concave portion on two surfaces close to each other, respectively, and the first bending member and the second bending member can be brought close to each other so that the convex portion is inserted into the concave portion to achieve bending of the member to be bent; and The laser cleaning mechanism includes a laser emitter, which is arranged on the side of the first bending member away from the member to be bent, and a first hollow portion is provided on the first bending member; and / or the laser emitter is arranged on the side of the second bending member away from the member to be bent, and a second hollow portion is provided on the second bending member.

2. The bending device according to claim 1, characterized in that The bending device further includes a first frame, and the first bending member is movably arranged on the first frame along a first preset direction, and the first preset direction forms a certain angle with the horizontal direction.

3. The bending device according to claim 2, characterized in that The protruding direction of the convex portion is the first preset direction, and the recessed direction of the concave portion is the first preset direction.

4. The bending device according to claim 2, characterized in that: The first frame is provided with a first guide rail extending along the first preset direction, the first bending member is provided with a first slider, and the first slider is slidably provided on the first guide rail; or The first bending member is provided with a first guide rail extending along the first preset direction, and the first frame is provided with a first slider, which is slidably provided on the first guide rail.

5. The bending device according to any one of claims 2 to 4, characterized in that: The bending device further includes a second frame, the second bending member is fixedly arranged on the second frame, and the concave portion and the convex portion are correspondingly arranged along the first preset direction.

6. The bending device according to any one of claims 2 to 4, characterized in that: The bending device further includes a second frame, and the second bending member is movably disposed on the second frame along a second preset direction.

7. The bending device according to claim 6, characterized in that: The second preset direction forms a certain angle with the horizontal direction, and the angle between the first preset direction and the horizontal direction and the angle between the second preset direction and the horizontal direction are complementary angles.

8. The bending device according to claim 1, characterized in that: The laser cleaning mechanism includes a protective cover which is arranged on the laser emitter. A through hole is provided on a side of the protective cover close to the part to be bent.

9. The bending device according to claim 1, characterized in that: The bending device further includes a dust removal mechanism, which is arranged at the upper end of the bending mechanism, and a dust suction port of the dust removal mechanism is arranged corresponding to the part to be bent.

10. A welding device, characterized in that: The welding equipment comprises: The bending device according to any one of claims 1 to 9; and The welding device is arranged downstream of the bending device and is used for welding the workpiece to be bent.

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