An adaptive multi-point pressing device for cover plate tab welding
Patent Information
- Application Number
- CN202522474434.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-21
AI Technical Summary
In existing technologies, during the welding process of new energy battery cover plates, the connecting pieces and the cover plate cannot fit evenly, resulting in poor weld quality issues.
Design an adaptive multi-point clamping device, in which the clamping blocks connected by elastic elements correspond one-to-one with the connecting pieces, providing independent clamping force, adapting to the thickness tolerance of the cover plate and the flatness of the connecting pieces, and ensuring that each connecting piece fits evenly.
This ensures a stable fit between each connecting piece and the cover plate, improves welding quality, avoids defects such as incomplete welding, and ensures the robustness and reliability of the welded joint.
Smart Images
Figure CN224927311U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of welding, and more specifically, to an adaptive multi-point clamping device for welding cover plate connecting pieces. Background Technology
[0002] The bonding state during welding directly determines the upper limit of weld quality. Only when the basic bonding is in place can subsequent current control and welding techniques play a role, ultimately forming a strong and reliable welded joint. In the welding process of new energy battery cover plates, a single upper pressure plate is usually used to press the connecting pieces onto the cover plate. However, due to the thickness tolerance of the cover plate itself and the flatness of the connecting pieces, it is impossible to guarantee that each connecting piece is in contact with the cover plate. This can lead to gaps between some connecting pieces and the cover plate, resulting in unstable contact between the connecting pieces and the terminal post, causing quality problems such as incomplete welding. Utility Model Content
[0003] The present invention aims to solve the problem in the prior art that it is impossible to guarantee that each connecting piece fits snugly against the cover plate.
[0004] To solve the above problems, this utility model provides an adaptive multi-point pressing device for welding cover plate connecting pieces, including an upper pressure plate, a cover plate and connecting pieces. The upper pressure plate is located directly above the cover plate, and several evenly distributed connecting pieces are placed on the cover plate. Several pressure blocks are telescopically connected to the bottom of the upper pressure plate through elastic elements. Each pressure block corresponds to the position of a connecting piece and presses the connecting piece against the cover plate.
[0005] The present invention provides an adaptive multi-point clamping device for welding cover plate connecting pieces, which, compared with the prior art, has the following beneficial effects, but is not limited to: The pressure blocks corresponding to the connecting pieces abut against the connecting pieces through elastic elements, applying independent clamping force to each connecting piece. This can accommodate the synchronous clamping requirements of multiple evenly distributed connecting pieces. The extensible design of the elastic elements can compensate for the thickness tolerance of the cover plate itself and the flatness of the connecting pieces, ensuring that each connecting piece can fit against the cover plate and guaranteeing the quality of the welding.
[0006] Furthermore, the upper and lower surfaces of the upper pressure plate are respectively provided with a first groove and a second groove in corresponding positions. The bottom of the first groove is provided with a connecting hole, through which the first groove and the second groove are connected. A shoulder screw is placed in the first groove. The threaded section of the shoulder screw passes through the connecting hole and the second groove and extends to the outside of the upper pressure plate to be fixedly connected to the pressure block. The elastic element includes a spring sleeved on the shoulder screw. The spring is located between the bottom of the second groove and the pressure block.
[0007] Furthermore, the upper pressure plate is provided with a plurality of first through holes, and the pressure block is provided with a second through hole, the first through holes and the second through holes being coaxially aligned.
[0008] Furthermore, each of the pressure blocks is connected to four elastic elements, which are distributed around the pressure block.
[0009] Furthermore, the diameter of the first through hole is larger than the diameter of the second through hole.
[0010] Furthermore, the diameter of the connecting hole is smaller than the width of the first groove and the second groove.
[0011] Furthermore, the diameter of the connecting hole is the same as the diameter of the smooth section of the shoulder screw.
[0012] Furthermore, the pressure block has a threaded hole, and the shoulder screw is fixedly connected to the pressure block through the threaded hole.
[0013] Furthermore, the length of the spring in its free state is greater than the depth of the second groove.
[0014] Furthermore, the shape of the pressing block is T-shaped. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This utility model Figure 2 Enlarged view of the structure of A in the middle; Figure 4 This is a schematic diagram of the upper pressure plate of this utility model; Figure 5 This is a schematic diagram of the structure of the cover plate of this utility model; Figure 6 This is a top view of the pressure block of this utility model.
[0016] Explanation of reference numerals in the attached figures: 1. Upper pressure plate; 2. Shoulder screw; 3. First groove; 4. Second groove; 5. Connecting hole; 6. Spring; 7. Pressure block; 8. Cover plate; 9. Connecting piece; 10. First through hole; 11. Second through hole. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.
[0018] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0021] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.
[0022] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.
[0023] See Figure 1 , 2 According to embodiment 5, an adaptive multi-point pressing device for welding cover plate connecting pieces of this utility model includes an upper pressure plate 1, a cover plate 8 and connecting pieces 9. The upper pressure plate 1 is disposed directly above the cover plate 8. Several evenly distributed connecting pieces 9 are placed on the cover plate 8. Several pressure blocks 7 are retractably connected to the bottom of the upper pressure plate 1 through elastic elements. Each pressure block 7 corresponds to the position of the connecting piece 9 and presses the connecting piece 9 against the cover plate 8.
[0024] In this embodiment, the upper pressure plate 1 is pressed down by connecting an external drive. Each independent pressure block 7 continues to press down after contacting the connecting piece 9 until all pressure blocks 7 are compacted, that is, the upper surface of the pressure block 7 contacts the bottom surface of the upper pressure plate 1. The elastic element is compressed to provide continuous pressure. The pressure block 7 corresponding to the connecting piece 9 abuts against the connecting piece 9 through the elastic element, applying an independent clamping force to each connecting piece 9. This can adapt to the synchronous clamping requirements of multiple evenly distributed connecting pieces 9. The extensible design of the elastic element can compensate for the thickness tolerance of the cover plate 8 itself and the flatness problem of the connecting piece 9, ensuring that each connecting piece 9 can fit with the cover plate 8 and guaranteeing the quality of welding.
[0025] See Figure 3 Optionally, the upper and lower surfaces of the upper pressure plate 1 are respectively provided with a first groove 3 and a second groove 4 in corresponding positions. The bottom of the first groove 3 is provided with a connecting hole 5, which connects the first groove 3 and the second groove 4. A shoulder screw 2 is placed in the first groove 3. The threaded section of the shoulder screw 2 passes through the connecting hole 5 and the second groove 4 and extends to the outside of the upper pressure plate 1 to be fixedly connected to the pressure block 7. The elastic element includes a spring 6 sleeved on the shoulder screw 2. The spring 6 is located between the bottom of the second groove 4 and the pressure block 7.
[0026] In this embodiment, the first groove 3 provides a limiting space for the shoulder screw 2, preventing the screw head from being exposed and interfering with other components; the second groove 4 provides a stable mounting cavity for the spring 6, preventing the spring 6 from shifting laterally; the connecting hole 5 enables precise guidance of the shoulder screw 2, ensuring that the pressure block 7 extends and retracts in a direction perpendicular to the cover plate 8, avoiding the generation of lateral force during clamping that causes the connecting piece 9 to shift; the design of the spring 6 being sleeved on the shoulder screw 2 allows the elastic force to be transmitted along the axial direction, making the clamping force more concentrated and uniform, and improving the fit stability between the connecting piece 9 and the cover plate 8.
[0027] See Figure 4 and Figure 6 Optionally, the upper pressure plate 1 is provided with a plurality of first through holes 10, and the pressure block 7 is provided with second through holes 11, wherein the first through holes 10 and the second through holes 11 are coaxially aligned.
[0028] In this embodiment, the first through hole 10 and the second through hole 11 are coaxially aligned, providing a precise and unobstructed welding channel for welding operations. This ensures that the welding torch can pass vertically through the first through hole 10 and the second through hole 11 to the top of the connecting piece 9. The welding torch penetrates downward from the top of the connecting piece 9 to the mating surface of the cover plate 8 for welding.
[0029] See Figure 1 Optionally, each of the pressure blocks 7 is connected to four elastic elements, which are distributed around the pressure block 7.
[0030] In this embodiment, the balanced force ensures that the contact surfaces of the pressure block 7 and the connecting piece 9 are fully fitted without any local gaps, thereby ensuring that the contact surfaces of the connecting piece 9 and the cover plate 8 are subjected to uniform force, preventing defects such as pores and incomplete welds caused by local loose fit during welding.
[0031] Optionally, the diameter of the first through hole 10 is larger than the diameter of the second through hole 11.
[0032] In this embodiment, the first through hole 10 is larger to facilitate the entry of the welding torch and make welding operations easier, while the second through hole 11 is set to be smaller in order to accurately align with the welding part and prevent welding in the wrong position.
[0033] Optionally, the diameter of the connecting hole 5 is smaller than the width of the first groove 3 and the second groove 4.
[0034] In this embodiment, the diameter of the connecting hole 5 is smaller than the width of the first groove 3 and the second groove 4, providing a limiting space for the head of the shoulder screw 2 to prevent the shoulder screw 2 from coming out; at the same time, it provides a limiting space for the spring 6.
[0035] Optionally, the diameter of the connecting hole 5 is the same as the diameter of the smooth section of the shoulder screw 2.
[0036] In this embodiment, it is ensured that the smooth section of the shoulder screw 2 can extend and retract smoothly within the connecting hole 5, while avoiding the shoulder screw 2 from shaking due to excessive clearance.
[0037] Optionally, the pressure block 7 has a threaded hole, and the shoulder screw 2 is fixedly connected to the pressure block 7 through the threaded hole.
[0038] In this embodiment, the connection between the shoulder screw 2 and the pressure block 7 is achieved through a threaded hole, which facilitates the replacement of the spring 6.
[0039] Optionally, the length of the spring 6 in its free state is greater than the depth of the second groove 4.
[0040] In this embodiment, after compaction, the pressure block 7 is always subjected to continuous elastic compressive force; to avoid the phenomenon of ineffective compression, and to ensure that the connecting piece 9 is tightly fitted with the cover plate 8.
[0041] Optionally, the pressure block 7 is T-shaped.
[0042] In this embodiment, the T-shape can reduce the contact area between the pressure block 7 and the connecting piece 9, making it easier to observe the pressing state of the connecting piece 9.
[0043] Although the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.
Claims
1. An adaptive multi-point clamping device for welding cover plate connecting pieces, characterized in that, It includes an upper pressure plate (1), a cover plate (8) and connecting pieces (9). The upper pressure plate (1) is located directly above the cover plate (8). Several evenly distributed connecting pieces (9) are placed on the cover plate (8). Several pressure blocks (7) are telescopically connected to the bottom of the upper pressure plate (1) through an elastic element. Each pressure block (7) corresponds to the position of the connecting piece (9) and presses the connecting piece (9) against the cover plate (8).
2. The adaptive multi-point clamping device for welding cover plate connecting pieces according to claim 1, characterized in that, The upper and lower surfaces of the upper pressure plate (1) are respectively provided with a first groove (3) and a second groove (4) with corresponding positions. The bottom of the first groove (3) is provided with a connecting hole (5). The first groove (3) and the second groove (4) are connected through the connecting hole (5). A shoulder screw (2) is placed in the first groove (3). The threaded section of the shoulder screw (2) passes through the connecting hole (5) and the second groove (4) and extends to the outside of the upper pressure plate (1) and is fixedly connected to the pressure block (7). The elastic element includes a spring (6) sleeved on the shoulder screw (2). The spring (6) is located between the bottom of the second groove (4) and the pressure block (7).
3. The adaptive multi-point clamping device for welding cover plate connecting pieces according to claim 1, characterized in that, The upper pressure plate (1) has a plurality of first through holes (10), and the pressure block (7) has a second through hole (11). The first through holes (10) and the second through holes (11) are coaxially aligned.
4. The adaptive multi-point clamping device for welding cover plate connecting pieces according to claim 1, characterized in that, Each of the pressure blocks (7) is connected to four elastic elements, which are distributed around the pressure block (7).
5. The adaptive multi-point clamping device for welding cover plate connecting pieces according to claim 3, characterized in that, The diameter of the first through hole (10) is larger than the diameter of the second through hole (11).
6. The adaptive multi-point clamping device for welding cover plate connecting pieces according to claim 2, characterized in that, The diameter of the connecting hole (5) is smaller than the width of the first groove (3) and the second groove (4).
7. The adaptive multi-point clamping device for welding cover plate connecting pieces according to claim 2, characterized in that, The diameter of the connecting hole (5) is the same as the diameter of the smooth section of the shoulder screw (2).
8. The adaptive multi-point clamping device for welding cover plate connecting pieces according to claim 2, characterized in that, The pressure block (7) has a threaded hole, and the shoulder screw (2) is fixedly connected to the pressure block (7) through the threaded hole.
9. The adaptive multi-point clamping device for welding cover plate connecting pieces according to claim 2, characterized in that, The length of the spring (6) in its free state is greater than the depth of the second groove (4).
10. The adaptive multi-point clamping device for welding cover plate connecting pieces according to claim 1, characterized in that, The shape of the pressing block (7) is T-shaped.