Sealing nail pre-welding mechanism

Abstract

The utility model provides a sealing nail pre-welding mechanism which comprises a welding galvanometer and a welding datum plate, a welding hole is formed in the welding datum plate, and a sealing nail on a battery is exposed upwards in the longitudinal direction through the welding hole. A pressing rod is arranged on the welding datum plate, and the free end of the pressing rod extends into the welding hole; the welding datum plate can be close to or away from the battery in the longitudinal direction so as to be switched between a welding state and a conventional state, and the pressing rod is used for pressing the sealing nail in the welding state. The sealing nail is pressed by the pressing rod, so that the sealing nail does not deviate and misplace in the welding process, and the quality stability of pre-welding of the sealing nail can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery sealing nail assembly, in particular to a sealing nail pre-welding mechanism. Background Art

[0002] After assembly, the sealing pins of lithium batteries need to be laser welded to secure them to the cover plate to ensure the battery's tightness. During the laser welding process, the laser can cause the sealing pins to become unstable within the injection hole, making them prone to displacement. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a sealing nail pre-welding mechanism, which can effectively improve the welding efficiency of the sealing nails.

[0004] The embodiments of the present invention are achieved through the following technical solutions:

[0005] A sealing pin pre-welding mechanism includes a welding galvanometer and a welding reference plate, wherein the welding reference plate is provided with a welding hole, through which the sealing pin on the battery is exposed longitudinally upward; a pressure rod is configured on the welding reference plate, and the free end of the pressure rod extends into the welding hole; the welding reference plate can approach or move away from the battery longitudinally to switch between a welding state and a normal state, and the pressure rod is used to compress the sealing pin in the welding state.

[0006] According to a preferred embodiment, the pressure rod includes an interconnected mounting section and a clamping section, the clamping section is provided with a clamping protrusion; the mounting section is provided on the welding reference plate; the clamping protrusion is provided along the axial extension of the welding hole.

[0007] According to a preferred embodiment, the pressure rod is adjustably arranged on the welding reference plate, and the pressure rod can extend into or out of the welding hole.

[0008] According to a preferred embodiment, an avoidance groove is provided on the welding reference plate, and the avoidance groove passes through the welding reference plate and reaches the welding hole; the pressure rod is embedded in the avoidance groove and can extend into or out of the welding hole along the extension direction of the avoidance groove.

[0009] According to a preferred embodiment, a telescopic part is arranged on the welding reference plate, the pressure rod is arranged at the telescopic end of the telescopic part, and the telescopic direction of the telescopic part is parallel to the extension direction of the avoidance groove; a guide plate is arranged on the welding reference plate, and a guide groove is arranged on the guide plate, and the extension direction of the guide groove is parallel to the telescopic direction of the telescopic part; a guide roller is arranged on the pressure rod, and the guide roller is rollingly assembled in the guide groove.

[0010] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0011] The welding reference plate of the utility model moves downward in the longitudinal direction and is pressed against the battery, and the sealing pins are exposed through the welding holes to facilitate welding. During this process, the pressure rod presses the sealing pins so that they do not shift or misalign during the welding process, thereby ensuring the quality stability of the sealing pin pre-welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 A schematic diagram of the three-dimensional structure of the pre-welding mechanism and the fixture provided in an embodiment of the present utility model;

[0014] Figure 2 A schematic diagram of the three-dimensional structure of a pre-welding mechanism provided in an embodiment of the present utility model;

[0015] Figure 3 A schematic diagram of the assembly structure of the first bracket and the welding reference plate provided in an embodiment of the present utility model;

[0016] Figure 4 for Figure 3 A partial enlarged schematic diagram of the structure at point A in the middle;

[0017] Figure 5 for Figure 3 A partial enlarged schematic diagram of the structure at point B in the middle.

[0018] Icons: 11-first bracket, 12-welding reference plate, 121-welding hole, 122-avoidance groove, 13-linear module, 14-second bracket, 15-welding galvanometer, 16-pressure rod, 161-installation section, 162-pressing section, 1621-pressing protrusion, 163-guide wheel, 17-telescopic part, 18-guide plate, 181-guide groove, 19-driving part, 2-clamp. DETAILED DESCRIPTION

[0019] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0022] Please refer to Figures 1 to 5 As shown, the pre-welding mechanism includes a welding galvanometer 15 and a welding reference plate 12. The welding reference plate 12 is provided with a welding hole 121, and the sealing pin on the battery is exposed vertically upward through the welding hole 121; a pressure rod 16 is provided on the welding reference plate 12, and the free end of the pressure rod 16 extends into the welding hole 121; the welding reference plate 12 can be moved vertically close to or away from the battery to switch between the welding state and the normal state, and the pressure rod 16 is used to press the sealing pin in the welding state. The welding reference plate 12 here is used to press the battery vertically during the laser processing process. When in use, the fixture 2 clamps the battery below the welding reference plate 12, and the welding reference plate 12 moves downward in the longitudinal direction to press it to the battery, and exposes the sealing pin through the welding hole 121 to facilitate welding. During this process, the pressure rod 16 presses the sealing pin so that it does not shift or dislocate during the welding process, which can ensure the quality stability of the sealing pin pre-welding.

[0023] In this embodiment, welding reference plate 12 is mounted on a frame (not shown) via first bracket 11. Specifically, welding reference plate 12 is slidably connected to first bracket 11 via a slide rail and slider assembly. A driver 19 is provided on the frame, acting on welding reference plate 12 to enable longitudinal movement relative to first bracket 11. Driver 19 can optionally be a pneumatic cylinder.

[0024] Furthermore, the compression rod 16 includes a mounting section 161 and a pressing section 162 connected to each other. The pressing section 162 is provided with a pressing protrusion 1621. The mounting section 161 is mounted on the welding reference plate 12. The pressing protrusion 1621 extends axially along the welding hole 121. The pressing section 162 is a cantilevered arm that provides elastic deformation when the compression rod 16 compresses the sealing pin, thereby preventing hard contact between the compression rod 16 and the sealing pin.

[0025] like Figure 4As shown, this embodiment provides an assembly form of the pressure rod 16, which is specifically fixed on the welding reference plate 12 by bolts or screws.

[0026] like Figure 5 As shown, another assembly form of the pressure rod 16 provided in this embodiment is provided. Specifically, the pressure rod 16 is adjustably arranged on the welding reference plate 12, and the pressure rod 16 can be extended into or out of the welding hole 121. This arrangement allows the pressure rod 16 to be adjusted to avoid the welding hole 121 after the sealing pin pre-welding (specifically spot welding, during which the welding laser can avoid interference with the pressure rod 16) is completed, thereby achieving full welding at the original work station, which is beneficial to improving work efficiency, reducing the number of welding equipment configured on the production line, and saving costs.

[0027] Specifically, the welding reference plate 12 is provided with an avoidance groove 122, which passes through the welding reference plate 12 and extends to the welding hole 121; the pressure rod 16 is embedded in the avoidance groove 122 and can extend into or out of the welding hole 121 along the extension direction of the avoidance groove 122. Furthermore, the welding reference plate 12 is provided with a telescopic member 17, the pressure rod 16 is provided at the telescopic end of the telescopic member 17, and the telescopic direction of the telescopic member 17 is parallel to the extension direction of the avoidance groove 122; the welding reference plate 12 is provided with a guide plate 18, and the guide plate 18 is provided with a guide groove 181, and the extension direction of the guide groove 181 is parallel to the extension direction of the telescopic member 17; the pressure rod 16 is provided with a guide roller, and the guide roller is rollingly assembled in the guide groove 181. Optionally, the telescopic member 17 includes but is not limited to a pneumatic cylinder, a hydraulic cylinder or an electric push rod. During use, the telescopic part 17 drives the pressure rod 16 to extend into the welding hole 121 to compress the sealing pin. When the pre-welding is completed, the telescopic part 17 drives the pressure rod 16 to exit the welding hole 121 along the avoidance groove 122. At this time, the interference of the pressure rod 16 is eliminated, and the sealing pin can be fully welded at the original work station.

[0028] like Figure 1 and Figure 2 As shown, the pre-welding mechanism also includes a second bracket 14, the second bracket 14 is mounted on the frame, and the welding galvanometer 15 is adjustably mounted on the second bracket 14 through three linear modules 13. Specifically, the driving directions of the three linear modules 13 are perpendicular to each other. The first linear module 13 is mounted on the second bracket 14, the second linear module 13 is mounted on the first linear module 13 and driven thereby, the third linear module 13 is mounted on the second linear module 13 and driven thereby, and the welding galvanometer 15 is mounted on the third linear module 13 and driven thereby. Here, it is sufficient to enable the welding galvanometer 15 to be adjusted to any position in space so as to facilitate the welding of the sealing nails, and the assembly form is not specifically limited.

[0029] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A sealing nail pre-welding mechanism, characterized in that: It includes a welding galvanometer and a welding reference plate, wherein the welding reference plate is provided with a welding hole, and the sealing nail on the battery is exposed upward in the longitudinal direction through the welding hole; The welding reference plate is provided with a pressure rod, and the free end of the pressure rod extends into the welding hole; The welding reference plate can be moved closer to or farther away from the battery in the longitudinal direction to switch between a welding state and a normal state. The pressing rod is used to press the sealing pin in the welding state.

2. The sealing nail pre-welding mechanism according to claim 1, characterized in that: The pressure rod comprises a mounting section and a pressing section connected to each other, and the pressing section is provided with a pressing protrusion; The mounting section is provided on the welding reference plate; The pressing protrusion is extended along the axial direction of the welding hole.

3. The sealing nail pre-welding mechanism according to claim 1, characterized in that: The pressing rod is adjustably arranged on the welding reference plate, and the pressing rod can extend into or out of the welding hole.

4. The sealing nail pre-welding mechanism according to claim 3, characterized in that: The welding reference plate is provided with an avoidance groove, which passes through the welding reference plate and extends to the welding hole; The pressure rod is embedded in the avoidance groove and can extend into or out of the welding hole along the extending direction of the avoidance groove.

5. The sealing nail pre-welding mechanism according to claim 4, characterized in that: A telescopic member is disposed on the welding reference plate, the pressure rod is disposed at the telescopic end of the telescopic member, and the telescopic direction of the telescopic member is parallel to the extension direction of the avoidance groove; The welding reference plate is provided with a guide plate, the guide plate is provided with a guide groove, and the extension direction of the guide groove is parallel to the extension direction of the telescopic member; A guide roller is arranged on the pressure rod, and the guide roller is rotatably assembled in the guide groove.

Images