Welding tool and welding equipment

Abstract

The utility model discloses a welding tool and welding equipment, which comprises a mounting plate and a welding sleeve, and the mounting plate is provided with a via hole; the welding sleeve comprises a sleeve body, a welding hole is formed in the sleeve body, the sleeve body is arranged on the mounting plate, the welding hole is communicated with the via hole, and the inner wall of the welding hole gradually expands outwards in the direction from the welding hole to the via hole. The welding device can reduce the situation that welding slag is attached to the inner wall of the copper bush in the welding process, and therefore the welding quality is improved.

Description

Technical Field

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

[0002] In battery manufacturing, welding tooling is critical equipment for joining battery cells and modules. Currently, laser welding is the predominant welding technology due to its high precision and non-contact nature. However, as battery performance requirements increase, existing welding tooling faces technical challenges such as metal welding compatibility, weld quality monitoring, and thermal management. Therefore, developing new welding tooling to improve welding precision, speed, and automation has become a key direction for industry development.

[0003] Currently, a common welding tooling design includes a copper sleeve with a through-hole to reduce the impact of welding slag on other parts of the workpiece, thereby protecting the overall processing quality of the workpiece. However, during welding, welding slag tends to adhere to the inner wall of the through-hole, blocking the laser and reducing welding quality. Utility Model Content

[0004] One purpose of the utility model is to provide a welding tool and a welding device, which are intended to reduce the situation where welding slag adheres to the inner wall of the copper sleeve during the welding process, thereby improving the welding quality.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a solution: a welding tool, characterized in that it includes:

[0006] The mounting plate has a through hole;

[0007] The welding sleeve includes a sleeve body, the sleeve body is provided with a welding hole, the sleeve body is arranged on the mounting plate, the welding hole is connected with the through hole, and the inner wall of the welding hole gradually expands outward from the welding hole to the through hole.

[0008] Optionally, the angle between the inner wall of the welding hole and the axis of the welding hole is α, 15°≤α≤30°.

[0009] Optionally, the surface roughness of the inner wall of the welding hole is ≤Ra1.6.

[0010] Optionally, the welding tool includes a buffer assembly, the buffer assembly includes a connecting pin, the welding sleeve includes a connecting plate, the connecting plate is connected to the sleeve body, and the connecting pin is connected to the connecting plate;

[0011] The mounting plate is provided with a guide groove which extends along the axis direction of the welding hole. The connecting pin is slidably arranged in the guide groove along the length direction of the guide groove.

[0012] Optionally, the buffer assembly includes a bolt, the connecting plate is provided with a positioning hole, the bolt is passed through the positioning hole, and the connecting pin is connected to the connecting plate via the bolt.

[0013] Optionally, the connecting pin includes a limiting plate and a connecting rod, the limiting plate and the connecting rod are connected, the mounting plate is provided with a first limiting groove, the first limiting groove is communicated with the guide groove, the limiting plate is slidably arranged in the first limiting groove, and the connecting rod is passed through the guide groove;

[0014] The buffer assembly includes a first elastic member, which is arranged in the first limiting groove. One end of the first elastic member abuts against the limiting plate, and the other end abuts against the inner wall of the first limiting groove.

[0015] Optionally, a slot is formed at one end of the limiting plate away from the connecting rod.

[0016] Optionally, the mounting plate is provided with a second limiting groove, the second limiting groove is communicated with the guide groove, and the connecting pin is passed through the second limiting groove and the guide groove;

[0017] The buffer assembly includes a second elastic member, which is arranged in the second limiting groove. One end of the second elastic member is connected to the connecting plate, and the other end is connected to the inner wall of the second limiting groove.

[0018] Optionally, the mounting plate is provided with a plurality of fixing holes, which are used to fix the air pipe.

[0019] To achieve the above-mentioned purpose, the present invention provides a solution, which is a welding device, comprising: a welder and any one of the above-mentioned welding tools.

[0020] The beneficial effects of the present invention are:

[0021] A welding tool comprises: a mounting plate, the mounting plate is provided with a through hole;

[0022] The welding sleeve includes a sleeve body, the sleeve body is provided with a welding hole, the sleeve body is arranged on the mounting plate, the welding hole is connected with the through hole, and the inner wall of the welding hole gradually expands outward from the welding hole to the through hole.

[0023] Since the inner wall of the welding hole is tilted relative to the axial direction of the welding hole, the welding slag slides out of the welding hole along the inner wall of the welding hole, thereby reducing the situation where the welding slag adheres to the inner wall of the welding hole and blocks the laser beam, thereby improving the welding quality. Moreover, since the moving direction of the welding slag is tilted relative to the axis of the welding hole, the tilted inner wall of the welding hole can reduce the contact area with the spattered welding slag, thereby further reducing the situation where the welding slag adheres to the inner wall of the welding hole, thereby improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the overall structure of the welding tool provided by the embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of the welding tool provided by the embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the overall structure of the welding tool provided by the embodiment of the utility model;

[0028] Figure 4 The embodiment of the present utility model provides Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle;

[0029] Figure 5 The embodiment of the present utility model provides Figure 4 A partial enlarged schematic diagram of area A in the middle;

[0030] Figure 6 This is a schematic diagram of the cross-sectional structure of a buffer assembly provided by an embodiment of the present utility model;

[0031] Figure 7 This is a schematic diagram of the cross-sectional structure of a buffer assembly provided by an embodiment of the present utility model;

[0032] Figure 8 The embodiment of the present utility model provides Figure 7 A partial enlarged schematic diagram of area B in the middle.

[0033] Description of Figure Numbers:

[0034] 20. Mounting plate; 21. Through hole; 22. Guide groove; 23. First limiting groove; 24. Second limiting groove; 25. Fixing hole; 30. Welding sleeve; 31. Sleeve body; 311. Welding hole; 32. Connecting plate; 321. Positioning hole; 40. Buffer assembly; 41. Connecting pin; 411. Limiting plate; 4111. Slot; 412. Connecting rod; 42. Bolt; 43. First elastic member; 44. Second elastic member. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figures 1 to 4 As shown, Figure 1 This is a schematic diagram of the overall structure of the welding tool provided by the embodiment of the utility model. Figure 2 This is a schematic diagram of the overall structure of the welding tool provided by the embodiment of the utility model. Figure 3 This is a schematic diagram of the overall structure of the welding tool provided by the embodiment of the utility model. Figure 4 The embodiment of the present utility model provides Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle.

[0037] The embodiment of the present utility model provides a welding tool, including: a mounting plate 20, which is provided with a through hole 21; a welding sleeve 30, which includes a sleeve body 31, which is provided with a welding hole 311, and the sleeve body 31 is arranged on the mounting plate 20, and the welding hole 311 is connected to the through hole 21. From the welding hole 311 to the through hole 21, the inner wall of the welding hole 311 gradually expands outward.

[0038] In practice, mounting plate 20 is positioned between the welder and the workpiece. A pneumatic cylinder is externally connected to mounting plate 20, driving the movement of the welding plate. The end of welding hole 311 with a smaller inner diameter is positioned closer to the workpiece, while the end with a larger inner diameter is positioned closer to the welder. Before welding, the cylinder drives mounting plate 20 toward the workpiece until sleeve 31 abuts the workpiece. At this point, the workpiece portion to be welded is located within welding hole 311, and the inner diameter of welding hole 311 gradually increases as it moves away from the workpiece. During welding, the welder emits a laser, which passes through the through hole 21 and the welding hole 311 and welds the workpiece. The welding slag generated by the welding splashes to the inner wall of the welding hole 311. Since the inner wall of the welding hole 311 is tilted relative to the axial direction of the welding hole 311, the welding slag slides out of the welding hole 311 along the inner wall of the welding hole 311, so as to reduce the situation where the welding slag adheres to the inner wall of the welding hole 311 and blocks the laser beam, thereby improving the welding quality. Moreover, since the moving direction of the welding slag is tilted to the direction of the axis of the welding hole 311, the tilted inner wall of the welding hole 311 can reduce the contact area with the splashing welding slag, thereby further reducing the situation where the welding slag adheres to the inner wall of the welding hole 311 and improving the welding quality.

[0039] In this embodiment, a plurality of through holes 21 are formed on the welding sleeve 30 , and a plurality of sleeve bodies 31 are provided. The sleeve bodies 31 are provided in a one-to-one correspondence with the through holes 21 , and the sleeve bodies 31 are arranged along a rectangular array.

[0040] Further, see Figure 5 As shown, the angle between the inner wall of the welding hole 311 and the axis of the welding hole 311 is α, 15°≤α≤30°.

[0041] In actual application, the larger the angle, the easier it is for the welding slag to slide out along the inner wall of the welding hole 311, and the inner wall of the welding hole 311 is less likely to contact the welding slag, that is, the larger the angle, the less likely the welding slag is to adhere to the inner wall of the welding hole 311.

[0042] In this embodiment, α=30°.

[0043] Optionally, see Figure 5 As shown, the surface roughness of the inner wall of the welding hole 311 is ≤ Ra1.6.

[0044] Surface roughness, the degree of unevenness in the microscopic geometry of an object's surface, is an important parameter for measuring surface quality. Surface roughness is typically expressed as the height deviation of the microscopic geometry relative to an idealized flat surface. Surface roughness can be quantified in a variety of ways, including Ra (arithmetic mean deviation): This is one of the most commonly used surface roughness parameters and represents the arithmetic mean of the surface height deviations within the measurement area.

[0045] In practical applications, the smaller the surface roughness of the inner wall of the welding hole 311 , the higher the processing cost of the sleeve 31 ; the smoother the inner wall of the welding hole 311 , the easier it is for welding slag to slide out of the welding hole 311 along the inner wall of the welding hole 311 .

[0046] In this embodiment, the surface roughness of the inner wall of the welding hole 311 is Ra 1.6.

[0047] Optionally, see Figure 5 and Figure 6 As shown, the welding tooling includes a buffer assembly 40, the buffer assembly 40 includes a connecting pin 41, the welding sleeve 30 includes a connecting plate 32, the connecting plate 32 is connected to the sleeve body 31, and the connecting pin 41 is connected to the connecting plate 32; the mounting plate 20 is provided with a guide groove 22, the guide groove 22 extends along the axial direction of the welding hole 311, and the connecting pin 41 is slidably set in the guide groove 22 along the length direction of the guide groove 22.

[0048] In actual applications, the surface of a workpiece has multiple welding points, and the surface of the workpiece may be uneven, resulting in multiple welding points not being at the same height. Before welding, the mounting plate 20 drives the welding sleeve 30 to move toward the workpiece. During the movement of the mounting plate 20, the welding sleeve 30 first abuts against the workpiece, and then the mounting plate 20 continues to move. If the surface of the workpiece is flat, then the movement distances of different welding sleeves 30 relative to the mounting plate 20 are the same. If the surface of the workpiece is uneven, then the movement distances of different welding sleeves 30 relative to the mounting plate 20 will have corresponding differences, so that multiple sleeves 31 abut and fit against the surface of the workpiece. This design can reduce the occurrence of gaps between the sleeve 31 and the surface of the workpiece, thereby improving welding quality.

[0049] After welding is completed, the mounting plate 20 moves away from the workpiece until all sleeves 31 are separated from the workpiece. The matching relationship between the guide groove 22 and the connecting pin 41 constrains the movement direction of the welding sleeve 30, so that the welding sleeve 30 moves along the axis of the welding hole 311.

[0050] In this embodiment, the mounting plate 20 is provided with multiple connecting pins 41, and the connecting plate 32 is slidingly connected to the mounting plate 20 through multiple connecting pins 41. The multiple connecting pins 41 can improve the stability of the movement of the welding sleeve 30 and the reliability of the connection between the mounting plate 20 and the connecting plate 32.

[0051] Further, see Figure 5 The buffer assembly 40 includes a bolt 42 , the connecting plate 32 is provided with a positioning hole 321 , the bolt 42 is passed through the positioning hole 321 , and the connecting pin 41 is connected to the connecting plate 32 through the bolt 42 .

[0052] In actual application, the connecting pin 41 is connected to the connecting plate 32 by a bolt 42 , which facilitates the disassembly and installation of the connecting plate 32 and the connecting pin 41 .

[0053] In this embodiment, a threaded hole is formed at the center of one end of the connecting pin 41 , and the bolt 42 passes through the positioning hole 321 and is threadedly engaged with the threaded hole.

[0054] Optionally, see Figure 5 and Figure 6As shown, the connecting pin 41 includes a limiting plate 411 and a connecting rod 412, the limiting plate 411 and the connecting rod 412 are connected, the mounting plate 20 is provided with a first limiting groove 23, the first limiting groove 23 is connected to the guide groove 22, the limiting plate 411 is slidably disposed in the first limiting groove 23, the connecting rod 412 is passed through the guide groove 22, and one end of the connecting rod 412 is connected to the connecting plate 32. The buffer assembly 40 includes a first elastic member 43, the first elastic member 43 is disposed in the first limiting groove 23 and sleeved on one end of the connecting rod 412 near the limiting plate 411, one end of the first elastic member 43 abuts the limiting plate 411, and the other end abuts the inner wall of the first limiting groove 23.

[0055] In actual application, under the action of gravity of the welding sleeve 30, the first elastic member 43 undergoes compression deformation. The mounting plate 20 drives the sleeve 31 to move toward the workpiece until the sleeve 31 abuts the workpiece surface. At this time, the mounting plate 20 continues to move toward the workpiece, and the first elastic member 43 compresses and deforms and applies force to the sleeve 31, so that the sleeve 31 can press against the workpiece surface. At this time, the force applied by the sleeve 31 on the workpiece surface is the elastic force generated by the compression deformation of the first elastic member 43, thereby reducing the possibility of the sleeve 31 damaging the workpiece surface during welding. After welding is completed, the mounting plate 20 drives the sleeve 31 to move away from the workpiece, and the first elastic member 43 resets the welding sleeve 30. The cooperation between the limit plate 411 and the inner wall of the first limit groove 23 is used to prevent the connecting rod 412 from escaping from the guide groove 22.

[0056] In this embodiment, the first elastic member 43 is a spring. The first elastic member 43 may also be a gas spring, a leaf spring, a thermoplastic elastomer, etc.

[0057] Further, see Figure 6 As shown, a slot 4111 is defined at one end of the limiting plate 411 away from the connecting rod 412 .

[0058] Because the limiting plate 411 is disposed in the limiting slot, it is difficult for the operator to fix the position of the connecting rod 412 when connecting the connecting rod 412 to the connecting plate 32. In actual use, the assembler can insert a screwdriver or other tool into the locking slot 4111 to fix the position of the limiting plate 411, thereby fixing the position of the connecting rod 412, thereby facilitating the connection of the connecting rod 412 to the connecting plate 32.

[0059] In this embodiment, the first limiting groove 23 is a through straight groove. The first limiting groove 23 may also be a cross-shaped groove or a polygonal blind hole.

[0060] Optionally, see Figure 7 and Figure 8As shown, the mounting plate 20 defines a second limiting groove 24, which communicates with the guide groove 22. A connecting pin 41 is disposed through the second limiting groove 24 and the guide groove 22. The buffer assembly 40 includes a second elastic member 44, which is disposed in the second limiting groove 24 and sleeved over the end of the connecting rod 412 away from the limiting plate 411. One end of the second elastic member 44 is connected to the connecting plate 32, and the other end is connected to the inner wall of the second limiting groove 24.

[0061] In actual use, under the action of gravity on the welding sleeve 30, the second elastic member 44 undergoes tensile deformation. The mounting plate 20 drives the sleeve 31 toward the workpiece until the sleeve 31 contacts the workpiece surface. At this point, the mounting plate 20 continues to move toward the workpiece, and the first elastic member 43 deforms and applies force to the sleeve 31, allowing the sleeve 31 to press against the workpiece surface. The force exerted by the sleeve 31 on the workpiece surface is the elastic force generated by the deformation of the second elastic member 44, thereby reducing the risk of the sleeve 31 damaging the workpiece surface during welding. After welding is completed, the mounting plate 20 drives the sleeve 31 away from the workpiece, and the second elastic member 44 resets the welding sleeve 30.

[0062] In this embodiment, the second elastic member 44 is a spring. The second elastic member 44 may also be a gas spring, a leaf spring, a thermoplastic elastomer, etc.

[0063] Optionally, see Figure 1 As shown, the mounting plate 20 is provided with a plurality of fixing holes 25 , which are used to fix the air pipe.

[0064] In actual application, the assembler passes the cable tie through the fixing hole 25 and fixes the air pipe to the mounting plate 20 through the cable tie. The multiple fixing holes 25 can enable the air pipe to be placed on the mounting plate 20 in a specific shape.

[0065] In this embodiment, a plurality of fixing holes 25 are arranged along the edge of the mounting plate 20 .

[0066] The present invention also provides a welding device comprising a welder and any of the aforementioned welding fixtures. In this embodiment, the welder is a laser welder, which is positioned directly above the welding fixture and has multiple welding heads for emitting laser beams, each of which corresponds to a welding sleeve 30 of the welding fixture.

[0067] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship and movement status of the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0068] It should also 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 intervening element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0069] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0070] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A welding tool, characterized in that: include: A mounting plate, wherein the mounting plate is provided with a through hole; The welding sleeve includes a sleeve body, the sleeve body is provided with a welding hole, the sleeve body is arranged on the mounting plate, the welding hole is connected to the through hole, and the inner wall of the welding hole gradually expands outward from the welding hole to the through hole.

2. The welding tool according to claim 1, characterized in that: The included angle between the inner wall of the welding hole and the axis of the welding hole is α, 15°≤α≤30°.

3. The welding tool according to claim 1, characterized in that: The surface roughness of the inner wall of the welding hole is ≤Ra1.

6.

4. The welding tool according to any one of claims 1 to 3, characterized in that: The welding fixture includes a buffer assembly, the buffer assembly includes a connecting pin, the welding sleeve includes a connecting plate, the connecting plate is connected to the sleeve body, and the connecting pin is connected to the connecting plate; The mounting plate is provided with a guide groove, which extends along the axial direction of the welding hole. The connecting pin is slidably arranged in the guide groove along the length direction of the guide groove.

5. The welding tool according to claim 4, characterized in that: The buffer assembly includes a bolt, the connecting plate is provided with a positioning hole, the bolt is passed through the positioning hole, and the connecting pin is connected to the connecting plate through the bolt.

6. The welding tool according to claim 4, characterized in that: The connecting pin includes a limiting plate and a connecting rod, the limiting plate and the connecting rod are connected, the mounting plate is provided with a first limiting groove, the first limiting groove is communicated with the guide groove, the limiting plate is slidably arranged in the first limiting groove, the connecting rod is passed through the guide groove, and one end of the connecting rod is connected to the connecting plate; The buffer assembly includes a first elastic member, which is disposed in the first limiting groove. One end of the first elastic member abuts against the limiting plate, and the other end abuts against the inner wall of the first limiting groove.

7. The welding tool according to claim 6, characterized in that: A clamping groove is formed on one end of the limiting plate away from the connecting rod.

8. The welding tool according to claim 4, characterized in that: The mounting plate is provided with a second limiting groove, the second limiting groove is communicated with the guide groove, and the connecting pin is passed through the second limiting groove and the guide groove; The buffer assembly includes a second elastic member, which is arranged in the second limiting groove. One end of the second elastic member is connected to the connecting plate, and the other end is connected to the inner wall of the second limiting groove.

9. The welding tool according to any one of claims 1 to 3, characterized in that: The mounting plate is provided with a plurality of fixing holes, and the fixing holes are used for fixing the air pipe.

10. A welding device, characterized in that: include: A welding tool and a welding tool as claimed in any one of claims 1 to 9.

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