Nickel-hydrogen battery tab double-station spot welding workbench

Abstract

The utility model discloses a kind of nickel-metal hydride battery tab double-station spot welding workbench, belong to nickel-metal hydride battery manufacturing equipment technical field, the workbench includes base, spot welding machine main body, lifting drive mechanism and first spot welding electrode, second spot welding electrode is set in fixed platform front side, adjacent its side installation multifunctional support assembly;Multifunctional support assembly contains stand, rectangular prism guide rail and lifting sleeve, stand can rotate 360 °, and lifting sleeve is fixed height by locking screw;Lifting sleeve two sides separately set primary welding platform and secondary welding platform, and primary platform working surface is higher than secondary platform;Primary platform is equipped with tab positioning groove and stepped electrode accommodating groove, and secondary platform is equipped with third electrode accommodating groove, and its bearing surface is coplanar with the electrode groove bottom surface of primary platform, the utility model is switched by double-platform rotation and height difference design, realize electrode piece-tab welding and the full-process quick operation of foamed nickel cladding welding.

Description

Technical Field

[0001] This utility model relates to the technical field of nickel-metal hydride battery manufacturing equipment, specifically a spot welding machine auxiliary processing table for welding electrode sheets to tabs and welding welded parts to foamed nickel-coated structures. Background Technology

[0002] In current nickel-metal hydride battery manufacturing and related fields, a specific spot welding process exists. This process is mainly used to weld electrode sheets to tabs, and further connect the welded parts to a nickel foam coating structure, completing the spot welding of each edge of the nickel foam coating structure and the welded parts. The specific operation steps are as follows:

[0003] 1. Preliminary Spot Welding (Electrode Plate and Tab): The operator needs to work with both hands. One hand holds the electrode plate, positions it, and places it at a specific position above the fixed lower electrode. The other hand holds the tab and places it on top of the positioned electrode plate. Then, the operator triggers the pneumatic switch by foot, driving the movable upper electrode to move downwards, moving in the opposite direction to the lower electrode, thereby applying pressure to the contact point between the electrode plate and the tab and completing the spot welding.

[0004] 2. Overall Welding (Welded Part and Nickel Foam Coating): After initial spot welding, the nickel foam is folded and wrapped around the electrode sheet-tab welded part obtained above, forming a rectangular structure. The operator needs to hold this nickel foam-coated welded part, adjust the direction of its four sides one by one, and place each side on the lower electrode. The upper electrode is then pressed down by foot pedal to complete the spot welding connection between the nickel foam-coated structure and each side of the welded part.

[0005] However, the above-mentioned processes in the existing technology have significant problems of inconvenience and inefficiency, mainly in the following two aspects:

[0006] 1. Poor positioning stability in the initial spot welding process:

[0007] (1) During the placement of the electrode plate and the tab, since the electrode plate is small in size and can only be held by the operator with one hand, it needs to be precisely suspended and positioned and stably held above the lower electrode.

[0008] (2) At the same time, the operator also needs to stack the tabs on the positioned electrode sheet. During this process, there is a lack of effective auxiliary support or positioning device, and it is difficult to maintain the stability of the electrode sheet by relying solely on the narrow support point of the lower electrode.

[0009] Therefore, the electrode plate is prone to slipping or shifting from above the lower electrode, requiring operators to repeatedly try to place and adjust it until it is temporarily stable on the lower electrode before proceeding with the placement and spot welding of the tabs. This not only increases operation time and reduces efficiency but also makes precise control of the tab welding position difficult.

[0010] 2. The overall welding process is cumbersome and inconvenient:

[0011] (1) After completing the nickel foam coating, the four sides of the formed rectangular structure need to be spot welded one by one.

[0012] (2) The operator must hold the welding piece in his hand throughout the process and continuously rotate and adjust its direction manually to place and position each edge on the lower electrode in sequence.

[0013] This handheld operation method is very inconvenient for positioning and holding three-dimensional workpieces, especially when precise alignment of the welding points is required, making the operation cumbersome and inefficient.

[0014] In summary, existing spot welding processes primarily rely on manual hand-held operation, lacking stable and reliable positioning and support methods. This leads to difficulties in electrode placement, easy detachment, and cumbersome and inefficient operation during subsequent welding of rectangular cladding structures. These problems severely restrict production efficiency and product quality consistency, and urgently require improvement. Utility Model Content

[0015] 1. Technical problem to be solved:

[0016] To address the problems existing in the prior art, the purpose of this utility model is to provide a dual-station welding workbench for nickel-metal hydride battery tabs. Through the height-adjustable / rotatable dual-station integrated design, it solves the problem of repetitive positioning in multi-process welding and realizes efficient welding of the entire process of "electrode sheet-tab-cladding".

[0017] 2. Technical Solution:

[0018] To solve the above problems, the present invention adopts the following technical solution.

[0019] A dual-station spot welding workbench for nickel-metal hydride battery tabs includes a base, a spot welding machine body is mounted on the upper end of the base, a lifting drive mechanism is mounted on the front end of the spot welding machine body, the telescopic end of the lifting drive mechanism extends downward and is fixedly connected to a first electrode clamp, and a first spot welding electrode is mounted on the first electrode clamp.

[0020] A fixed platform is installed on the upper end of the base near the front side of the spot welding machine body. A second electrode clamp is installed at the front end of the fixed platform, and a second spot welding electrode is installed on the second electrode clamp.

[0021] A multi-functional support assembly is installed on the upper end of the base, adjacent to the side of the second spot welding electrode.

[0022] The multifunctional support assembly includes a column, a prism guide rail, a lifting sleeve, a primary welding platform, and a secondary welding platform. The lower end of the column is rotatably connected to the upper end of the base via a bearing seat, and the upper end of the column is fixedly connected to the prism guide rail. The lifting sleeve is sleeved around the prism guide rail and can slide up and down along it. A threaded hole is provided through the side wall of the lifting sleeve, and a locking screw is threaded into the threaded hole. One end of the locking screw can abut against the outer surface of the prism guide rail. The primary welding platform is fixedly installed on one side of the lifting sleeve, and the secondary welding platform is fixedly installed on the other side of the lifting sleeve. The working surface of the primary welding platform is higher than the working surface of the secondary welding platform.

[0023] A further improvement is that the primary welding platform includes a base plate fixedly connected to one side of the lifting sleeve and a sliding support plate located above the base plate; a first dovetail groove is provided at the upper end of the base plate; a first dovetail slider is fixedly connected to the lower end of the sliding support plate, and the first dovetail slider is located in the first dovetail groove and slides in cooperation with the first dovetail groove.

[0024] A further improvement is that: the upper end of the sliding support plate is provided with an electrode positioning groove and a first electrode receiving groove, the first electrode receiving groove is connected to the electrode positioning groove and is located on the same plane; the bottom of the first electrode receiving groove is provided with a second electrode receiving groove, the inner diameter of the second electrode receiving groove is smaller than the inner diameter of the first electrode receiving groove.

[0025] A further improvement is that the secondary welding platform includes a base plate two fixedly connected to the other side of the lifting sleeve and a sliding support plate two located above the base plate two; a second dovetail groove is provided at the upper end of the base plate two; a second dovetail slider is fixedly connected to the lower end of the sliding support plate two, and the second dovetail slider is located in the second dovetail groove and slides in cooperation with the second dovetail groove.

[0026] A further improvement is that a third electrode receiving groove is provided at the upper end of the sliding support plate 2.

[0027] A further improvement is that the bearing surface of the second sliding support plate is on the same horizontal plane as the bottom surface of the first electrode receiving groove.

[0028] A further improvement is that the cross-section of the prism guide rail is a rectangle with four corners.

[0029] A further improvement is that the third electrode receiving groove is a through groove that extends through the thickness of the sliding support plate.

[0030] 3. Beneficial effects:

[0031] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0032] (1) Precise positioning: The electrode positioning groove and the stepped electrode receiving groove work together to prevent electrode plate offset; the dovetail groove sliding structure ensures that the platform moves without shaking.

[0033] (2) Efficiency improvement: Dual-platform rotation switching eliminates the need for disassembly, saving a lot of time compared to traditional mold changing; height pre-adjustment mechanism eliminates repeated positioning (reducing height adjustment operations).

[0034] (3) Process compatibility: The primary platform height difference design is adapted to electrode sheet-tab thin layer welding; the secondary platform coplanar design is compatible with foam nickel coating thickening.

[0035] (4) Enhanced stability: The prism guide rail anti-torsion structure prevents welding vibration and displacement; the locking screw provides locking force to ensure load-bearing stability.

[0036] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0038] Figure 2 This is a schematic diagram of the structure of the multifunctional support component of this utility model;

[0039] Figure 3 This is a schematic diagram of the welding reference surface of this utility model;

[0040] Figure 4 This is a schematic diagram of the welding of the electrode sheet and the electrode tab of this utility model;

[0041] Figure 5 This is a schematic diagram of the foam nickel coating welding of this utility model.

[0042] Explanation of the labels in the diagram:

[0043] A. Electrode sheet; B. Electrode tab; C. Nickel foam; D. Welding reference surface;

[0044] 1. Base; 2. Spot welding machine body; 3. Lifting drive mechanism; 4. First electrode clamp; 5. First spot welding electrode; 6. Fixed platform; 7. Second electrode clamp; 8. Second spot welding electrode; 9. Multifunctional support assembly;

[0045] 91. Column; 92. Prismatic guide rail; 93. Lifting sleeve; 94. Locking screw;

[0046] 95. Primary welding platform; 951. Substrate 1; 952. First dovetail groove; 953. Sliding support plate 1; 954. Electrode positioning groove; 955. First electrode receiving groove; 956. Second electrode receiving groove;

[0047] 96. Secondary welding platform; 961. Second substrate; 962. Second dovetail groove; 963. Second sliding support plate; 964. Third electrode receiving groove. Detailed Implementation

[0048] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete. Example

[0049] Combination Figure 1-3 (Schematic diagram) A dual-site welding workbench for nickel-metal hydride battery tabs. The core structure of this auxiliary processing station includes:

[0050] 1. Basic frame: The base 1 is horizontally fixed in the working area, and the spot welding machine body 2 is installed on its upper surface.

[0051] 2. Welding execution unit:

[0052] The front end of the spot welding machine body 2 is vertically mounted with a lifting drive mechanism 3, and its telescopic end is connected downward to the first electrode clamp 4, in which the first spot welding electrode 5 is fastened.

[0053] A fixing platform 6 is fixedly installed on the front side of the base 1. A second electrode clamp 7 is set at the front end of the fixing platform 6, and a second spot welding electrode 8 is installed in the clamp.

[0054] 3. Multifunctional support components:

[0055] The lower end of the column 91 is rotatably connected to the base 1 via a bearing seat, and the upper end is fixed with a prism guide rail 92 (rectangular cross-section); the lifting sleeve 93 is sleeved on the outside of the prism guide rail 92, and the side wall is threadedly connected with a locking screw 94.

[0056] Primary welding platform 95: fixed to the left side of lifting sleeve 93, including: a first dovetail groove 952 opened on the base plate 951; a sliding support plate 953 slidably connected to the first dovetail groove 952 through the first dovetail slider at the lower end; an electrode positioning groove 954 and a first electrode receiving groove 955 connected to the surface of the sliding support plate 953 are opened, and a second electrode receiving groove 956 with a smaller inner diameter is provided at the bottom of the groove.

[0057] Secondary welding platform 96: fixed to the right side of lifting sleeve 93, including: a second dovetail groove 962 opened on the second base plate 961; a sliding support plate 963 slidably connected by a second dovetail slider; and a third electrode receiving groove 964 opened on the surface of the second sliding support plate 963.

[0058] in:

[0059] The height of the 95mm working face of the primary welding platform is greater than the height of the 96mm working face of the secondary welding platform.

[0060] The bearing surface of the sliding support plate 2 963 is coplanar with the bottom surface of the first electrode receiving groove 955.

[0061] Operating steps and working process

[0062] Step 1: In the initial state, by loosening the locking screw 94, adjust the height of the lifting sleeve 93 so that the bottom surface of the second electrode receiving groove 956 is flush with the top of the second spot welding electrode 8; limit the fixed height of the locking screw 94; rotate the column 91 so that the primary welding platform 95 faces the welding station.

[0063] Step 2: Welding the electrode sheet to the tab ( Figure 4 )

[0064] The sliding support plate 953 is slid laterally so that the first electrode receiving groove 955 is aligned with the second spot welding electrode 8; the electrode sheet is placed in the first electrode receiving groove 955 and the electrode tab is inserted into the electrode tab positioning groove 954; the lifting drive mechanism 3 is activated, the first spot welding electrode 5 moves down through the second electrode receiving groove 956 to press the electrode sheet, and at the same time the second spot welding electrode 8 is pushed up to complete the spot welding.

[0065] Step 3: Switch to nickel foam cladding welding ( Figure 5 )

[0066] Remove the welded part and slide back the sliding support plate 953; rotate the column to make the secondary welding platform 96 face the welding station; move the sliding support plate 963 laterally so that the third electrode receiving groove 964 is aligned with the second spot welding electrode 8; place the nickel foam-coated welded part on the bearing surface of the sliding support plate 963.

[0067] Finally, spot welding is started directly (no need to adjust the height): Since the bearing surface is coplanar with the bottom surface of the first electrode receiving groove 955, the height of the second spot welding electrode 8 is adapted to the thickness of the covering part; the first spot welding electrode 5 moves down and passes through the third electrode receiving groove 964 to complete the welding.

[0068] In this design, both sliding support plate 1 (953) and sliding support plate 2 (963) are made of hard aluminum alloy, and ceramic bushings are embedded in the electrode receiving groove to prevent arc erosion.

[0069] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A dual-position spot welding workbench for nickel-metal hydride battery tabs, comprising a base (1), a spot welding machine body (2) mounted on the upper end of the base (1), a lifting drive mechanism (3) mounted on the front end of the spot welding machine body (2), the telescopic end of the lifting drive mechanism (3) extending downward and fixedly connected to a first electrode clamp (4), a first spot welding electrode (5) mounted on the first electrode clamp (4); characterized in that: A fixed platform (6) is installed on the upper end of the base (1) near the front side of the spot welding machine body (2). A second electrode clamp (7) is installed on the front end of the fixed platform (6), and a second spot welding electrode (8) is installed on the second electrode clamp (7). A multifunctional support assembly (9) is installed on the upper end of the base (1) adjacent to the side of the second spot welding electrode (8). The multifunctional support assembly (9) includes a column (91), a prism guide rail (92), a lifting sleeve (93), a primary welding platform (95), and a secondary welding platform (96); the lower end of the column (91) is rotatably connected to the upper end of the base (1) via a bearing seat, and the upper end of the column (91) is fixedly connected to the prism guide rail (92), the cross-section of the prism guide rail (92) being rectangular; the lifting sleeve (93) is sleeved on the prism guide rail (92) and can slide up and down along it; The side wall of the lifting sleeve (93) is provided with a threaded hole, and the locking screw (94) is threaded into the threaded hole. One end of the locking screw (94) can abut against the outer surface of the prism guide rail (92). The primary welding platform (95) is fixedly installed on one side of the lifting sleeve (93), and the secondary welding platform (96) is fixedly installed on the other side of the lifting sleeve (93). The working surface of the primary welding platform (95) is higher than the working surface of the secondary welding platform (96).

2. The dual-station spot welding worktable for the tab of a nickel-hydrogen battery according to claim 1, characterized in that: The primary welding platform (95) includes a base plate (951) fixedly connected to one side of the lifting sleeve (93) and a sliding support plate (953) located above the base plate (951); the upper end of the base plate (951) is provided with a first dovetail groove (952); the lower end of the sliding support plate (953) is fixedly connected with a first dovetail slider, the first dovetail slider is located in the first dovetail groove (952) and slides in cooperation with the first dovetail groove (952).

3. The dual-station spot welding station for nickel-hydrogen battery tabs of claim 2, wherein: The upper end of the sliding support plate (953) is provided with an electrode positioning groove (954) and a first electrode receiving groove (955). The first electrode receiving groove (955) is connected to the electrode positioning groove (954) and is located on the same plane. The bottom of the first electrode receiving groove (955) is provided with a second electrode receiving groove (956). The width of the second electrode receiving groove (956) is smaller than the width of the first electrode receiving groove (955).

4. A dual-site welding workbench for nickel-metal hydride battery tabs according to claim 3, characterized in that: The secondary welding platform (96) includes a base plate two (961) fixedly connected to the other side of the lifting sleeve (93) and a sliding support plate two (963) located above the base plate two (961); a second dovetail groove (962) is provided at the upper end of the base plate two (961); a second dovetail slider is fixedly connected to the lower end of the sliding support plate two (963), and the second dovetail slider is located in the second dovetail groove (962) and slides in cooperation with the second dovetail groove (962).

5. The dual-station spot welding station for nickel-hydrogen battery tabs of claim 4, wherein: The upper end of the sliding support plate 2 (963) is provided with a third electrode receiving groove (964).

6. The dual-station spot welding station for nickel-metal hydride battery tabs of claim 4, wherein: The bearing surface of the sliding support plate 2 (963) is on the same horizontal plane as the bottom surface of the first electrode receiving groove (955).

7. The dual-station spot welding station for nickel-hydrogen battery tabs of claim 5, wherein: The third electrode receiving groove (964) is a through groove that extends through the thickness of the second sliding support plate (963).

Images