Tab welding mechanism

Abstract

The utility model discloses a tab welding mechanism, and relates to the technical field of welding equipment. The ultrasonic welding device comprises an adjusting base, a welding fixing seat, an ultrasonic lower welding die, an ultrasonic upper welding die, an upper welding die driving assembly and a guide assembly. The adjusting base comprises a supporting plate and a right-angle seat, the right-angle seat is fixed on the supporting plate, and adjusting screw mounting seats are arranged on the supporting plate and the right-angle seat; the welding fixing seat is fixed on the right-angle seat; the ultrasonic lower welding die is mounted at the lower part of the joint welding fixing seat; the ultrasonic upper welding die is correspondingly arranged above the ultrasonic lower welding die; the upper welding die driving assembly comprises an air cylinder and a pressing plate, the piston rod output end of the air cylinder is connected with the pressing plate, and the ultrasonic upper welding die is fixed to the bottom of the pressing plate. The guide assembly comprises at least two linear bearings and guide rods, the lower ends of the two guide rods are fixedly connected with the pressing plate, and a limiting plate is fixedly connected between the upper ends of the two guide rods. The positions of the upper welding die and the lower welding die on a welding station can be adjusted conveniently, and the upper welding die and the lower welding die operate stably.

Description

Technical Field

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

[0002] Batteries are divided into positive and negative poles, and the tabs are metal conductors that lead the positive and negative poles out of the battery cell. Commonly used battery cells have one positive tab and two negative tabs, but some battery cells use two positive tabs to enhance the conductivity of the positive pole. Therefore, the two positive tabs need to be welded together through the tab welding process. In the existing technology, the tab welding usually adopts the working mode of the assembly line. The battery cells that have passed the inspection are transported to the welding station with a belt, and the tabs are welded by an ultrasonic welding mechanism. However, the existing ultrasonic welding mechanism has the following problems: it is inconvenient to adjust the position of the upper and lower welding molds of the ultrasonic welding mechanism on the welding station; the upper and lower welding molds are not stable enough when working, which affects the welding quality. The upper welding mold needs to move up and down to cooperate with the lower welding mold to weld the tabs. It is necessary to ensure stability during operation, and the lower welding mold also needs to ensure stability during welding. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a tab welding mechanism, which is convenient for adjusting the positions of the upper and lower welding dies on the welding station, and the upper and lower welding dies operate stably.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A tab welding mechanism comprises an adjusting base, a welding fixing base, an ultrasonic lower welding mold, an ultrasonic upper welding mold, an upper welding mold driving assembly and a guide assembly; the adjusting base comprises a support plate and a right-angle seat, the support plate is vertically arranged, the right-angle seat is fixed to the support plate, the support plate and the right-angle seat are both provided with an adjusting screw mounting seat, the adjusting screw mounting seat is provided with an adjusting screw for fixing the support plate and the right-angle seat to the production equipment; the welding fixing base is fixed on the right-angle seat; the ultrasonic lower welding mold is mounted on the lower part of the welding fixing base; the ultrasonic upper welding mold is correspondingly arranged above the ultrasonic lower welding mold; the upper welding mold driving assembly comprises a cylinder and a pressure plate, the cylinder is vertically mounted on the upper part of the welding fixing base, the piston rod output end of the cylinder is connected to the pressure plate, and the ultrasonic upper welding mold is fixed to the bottom of the pressure plate; the guide assembly comprises at least two groups of linear bearings and guide rods, the two groups of linear bearings are mounted on the upper part of the welding fixing base, the two groups of guide rods respectively pass through the two groups of linear bearings, and the lower ends of the two groups of guide rods are fixedly connected to the pressure plate, and a limiting plate is fixedly connected between the upper ends.

[0006] In some embodiments, the welding fixed seat comprises a bottom plate, a top plate and two vertical plates, the bottom plate is horizontally fixed on the adjusting base, the top plate is parallel to the bottom plate, and the two vertical plates are vertically and spacedly fixed between the bottom plate and the top plate; the ultrasonic lower welding die is installed on the bottom plate; the air cylinder and the linear bearing are installed on the top plate.

[0007] In at least one embodiment, a vertical buffer screw is threadedly connected to the limiting plate, and a buffer head for contacting the top plate is arranged at the lower end of the buffer screw.

[0008] In some embodiments, the two sides of the right-angle seat are provided with reinforcing ribs to increase the structural strength, and improve the supporting force and stability of the adjusting base.

[0009] Compared with the prior art, the present application has at least the following beneficial effects:

[0010] The adjusting base is provided with a supporting plate and a right-angle seat, the supporting plate and the right-angle seat are both provided with an adjusting screw mounting seat, the space position of the ultrasonic lower welding die and the ultrasonic upper welding die on the welding station is conveniently adjusted by adjusting screws, so that the battery cell is accurately conveyed to the ultrasonic lower welding die and the ultrasonic upper welding die by the belt; the right-angle seat can provide stable support for the welding fixed seat, the ultrasonic lower welding die and the ultrasonic upper welding die, and the overall stability and reliability of the tab welding mechanism are enhanced; the pressing plate and the ultrasonic upper welding die are driven to move up and down by the air cylinder, and are provided with a guide assembly, the pressing plate and the ultrasonic upper welding die can stably move up and down by the cooperation of the guide rod and the linear bearing, so as to ensure the welding quality of the tab. BRIEF DESCRIPTION OF DRAWINGS

[0011] One or more embodiments of the present application will now be described, by way of example only, with reference to the accompanying drawings:

[0012] Figure 1 is a structural schematic view of the embodiment of the present application;

[0013] Figure 2 is Figure 1 is a structural schematic view of the upper welding die driving assembly of the embodiment of the present application;

[0014] Figure 3 is Figure 1 is a structural schematic view of the adjusting base of the embodiment of the present application.

[0015] The figure mark is: 1, adjusting base; 11, support plate; 12, right angle seat; 121, reinforcing rib; 2, combined welding fixed seat; 21, bottom plate; 22, top plate; 23, vertical plate; 3, ultrasonic wave lower welding mould; 4, ultrasonic wave upper welding mould; 5, upper welding mould drive assembly; 51, air cylinder; 52, pressing plate; 6, guide assembly; 61, linear bearing; 62, guide rod; 7, adjusting screw mounting seat; 71, counterbore; 72, connecting groove; 8, limiting plate; 81, buffer screw; 9, screw hole; 10, connecting head; 20, joint flange. DETAILED DESCRIPTION

[0016] The utility model will be described in detail below with reference to the exemplary embodiments in the drawings. But it should be known that the present application can be realized through various different forms, and should not be understood as being limited to the embodiments set forth herein. The embodiments are provided herein to make the disclosure of the present application more complete, and to fully convey the concept of the present application to the person skilled in the art.

[0017] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several", "a plurality of" is two or more, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the present application, unless otherwise explicitly specified and limited, the first feature "above" or "below" the second feature can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0018] As Figures 1 to 3 shown, the tab welding mechanism of the present application embodiment comprises an adjusting base 1, a welding fixing seat 2, an ultrasonic lower welding die 3, an ultrasonic upper welding die 4, an upper welding die driving assembly 5 and a guide assembly 6.

[0019] The adjustment base 1 includes a support plate 11 and a right-angle seat 12. The support plate 11 is arranged vertically, and the right-angle seat 12 is fixed to the support plate 11. The support plate 11 and the right-angle seat 12 are both provided with an adjustment screw mounting seat 7. The adjustment screw mounting seat 7 is provided with an adjustment screw for fixing the support plate 11 and the right-angle seat 12 to the production equipment. The joint welding fixed seat 2 is fixed to the right-angle seat 12. The ultrasonic lower welding mold 3 is installed at the bottom of the joint welding fixed seat 2; the ultrasonic upper welding mold 4 is correspondingly arranged above the ultrasonic lower welding mold 3. The upper welding mold drive assembly 5 includes a cylinder 51 and a pressure plate 52. The cylinder 51 is vertically installed at the top of the joint welding fixed seat 2. The piston rod output end of the cylinder 51 is connected to the pressure plate 52, and the ultrasonic upper welding mold 4 is fixed to the bottom of the pressure plate 52. The guide assembly 6 includes at least two sets of linear bearings 61 and guide rods 62. The two sets of linear bearings 61 are installed on the upper part of the welding fixed base 2. The two sets of guide rods 62 pass through the two sets of linear bearings 61 respectively. The lower ends of the two sets of guide rods 62 are fixedly connected to the pressure plate 52, and the upper ends are fixedly connected to the limit plate 8. Through the cooperation of the guide rods 62 and the linear bearings 61, the pressure plate 52 and the ultrasonic upper welding mold 4 can be moved up and down smoothly, avoiding the ultrasonic upper welding mold 4 from deviating in the horizontal direction, improving accuracy, and thus ensuring the welding quality of the tab. The limit plate 8 can limit the ultrasonic upper welding mold 4.

[0020] Specifically, a connecting head 10 and a connecting flange 20 are provided on the pressure plate 52. The connecting head 10 is fixedly connected to the piston rod output end of the cylinder 51, and the connecting head 10 is fixed to the pressure plate 52 through the connecting flange 20. A welding mold mounting seat is fixed to the bottom of the pressure plate 52. The welding mold mounting seat includes a first seat body and a second seat body provided with a semicircular mounting groove. The ultrasonic upper welding mold 4 is inserted into the semicircular mounting groove. The first seat body and the second seat body cooperate and are connected by threaded fasteners to achieve the fixation of the ultrasonic upper welding mold 4.

[0021] Optionally, the welding fixing seat 2 includes a bottom plate 21, a top plate 22 and two vertical plates 23, the bottom plate 21 is horizontally fixed on the adjustment base 1, the top plate 22 is arranged parallel to the bottom plate 21, and the two vertical plates 23 are vertically and spaced apart and fixed between the bottom plate 21 and the top plate 22; the ultrasonic lower welding mold 3 is installed on the bottom plate 21; the cylinder 51 and the linear bearing 61 are installed on the top plate 22.

[0022] Optionally, a vertically arranged buffer screw 81 is threadedly connected to the limit plate 8, and the lower end of the buffer screw 81 is provided with a buffer head for contacting the top plate 22. The buffer screw 81 is used to buffer and limit the ultrasonic upper welding mold 4 to avoid hard contact between the ultrasonic upper welding mold 4 and the ultrasonic lower welding mold 3.

[0023] refer to Figure 3Optionally, reinforcing ribs 121 are provided on both sides of the right-angle seat 12. These ribs 121 increase structural strength, thereby improving the support and stability of the adjustable base 1, ensuring the overall stability and reliability of the tab welding mechanism, and ensuring the stability of the upper and lower welding molds during operation. The adjusting screw mounting seat 7 is provided with a countersunk hole 71 and a connecting slot 72 for installing the adjusting screw. Screw holes 9 for connecting the adjusting screw are provided at the lower end and sides of the support plate 11, as well as on the rear side of the right-angle seat 12.

[0024] The working process of the tab welding mechanism is as follows: when the battery cell is conveyed to the welding station by the belt, the cylinder 51 moves downward, pushing the pressure plate 52 and the ultrasonic upper welding mold downward, the ultrasonic upper welding mold presses the tab onto the ultrasonic lower welding mold, and the ultrasonic welding function is started at the same time to weld the two tabs together. After the welding is completed, the cylinder 51 moves upward, and the working cycle is completed.

[0025] The tab welding mechanism has a simple structure and occupies a small space. By setting an adjustment base 1, the spatial position of the ultrasonic lower welding mold 3 and the ultrasonic upper welding mold 4 on the welding station can be conveniently adjusted. The right-angle seat 12 of the adjustment base 1 is provided with a reinforcing rib 121 to increase the structural strength, thereby improving the supporting force and stability of the adjustment base 1 and ensuring the overall stability and reliability of the tab welding mechanism. The cylinder 51 drives the pressure plate 52 and the ultrasonic upper welding mold 4 to move up and down, thereby improving work efficiency. The guide component 6 can ensure that the ultrasonic upper welding mold 4 moves up and down smoothly. The limit plate 8 and the buffer screw 81 can buffer and limit the ultrasonic upper welding mold 4 to avoid hard contact between the ultrasonic upper welding mold 4 and the ultrasonic lower welding mold 3, thereby ensuring the welding quality of the tab.

[0026] It should be understood that all the above embodiments are illustrative rather than restrictive. Any modifications, equivalent changes and modifications made by those skilled in the art to the specific embodiments described above under the concept of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A tab welding mechanism, characterized in that: It includes an adjustment base, a welding fixing seat, an ultrasonic lower welding die, an ultrasonic upper welding die, an upper welding die driving assembly and a guide assembly; The adjustment base includes a support plate and a right-angle seat, the support plate is vertically arranged, the right-angle seat is fixed to the support plate, and the support plate and the right-angle seat are both provided with an adjustment screw mounting seat, and the adjustment screw mounting seat is provided with an adjustment screw for fixing the support plate and the right-angle seat to the production equipment; The welded fixing seat is fixed on the right-angle seat; The ultrasonic lower welding mold is installed at the lower part of the joint welding fixed seat; the ultrasonic upper welding mold is correspondingly arranged above the ultrasonic lower welding mold; The upper welding die driving assembly includes a cylinder and a pressing plate. The cylinder is vertically mounted on the upper portion of the joint welding fixing seat. The piston rod output end of the cylinder is connected to the pressing plate. The ultrasonic upper welding die is fixed to the bottom of the pressing plate. The guide assembly includes at least two groups of linear bearings and guide rods, the two groups of linear bearings are installed on the upper part of the welded fixed seat, the two groups of guide rods pass through the two groups of linear bearings respectively, and the lower ends of the two groups of guide rods are fixedly connected to the pressure plate, and the upper ends are fixedly connected with a limiting plate.

2. The tab welding mechanism according to claim 1, characterized in that: The welding fixing seat includes a bottom plate, a top plate and two vertical plates. The bottom plate is horizontally fixed on the adjustment base, the top plate is arranged parallel to the top of the bottom plate, and the two vertical plates are vertically and spaced apart and fixed between the bottom plate and the top plate; the ultrasonic lower welding mold is installed on the bottom plate; the cylinder and the linear bearing are installed on the top plate.

3. The tab welding mechanism according to claim 2, characterized in that: A vertically arranged buffer screw is threadedly connected to the limiting plate, and a buffer head is provided at the lower end of the buffer screw for contacting the top plate.

4. The tab welding mechanism according to claim 1, characterized in that: Reinforcement ribs are provided on both sides of the right-angle seat.

5. The tab welding mechanism according to claim 1, characterized in that: The adjusting screw mounting seat is provided with a countersunk hole and a connecting groove for installing the adjusting screw; the lower end and side of the support plate and the rear side of the right-angle seat are provided with screw holes for connecting the adjusting screw.

6. The tab welding mechanism according to claim 1, characterized in that: The pressure plate is provided with a connector and a joint flange, the connector is fixedly connected to the piston rod output end of the cylinder, and the connector is fixed to the pressure plate through the joint flange.

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