Spot welding machine with mobile spot welding head function

Abstract

The utility model provides a spot welding machine with a mobile spot welding head function, belonging to the field of spot welding machine technology; including: a conveyor belt is provided inside the assembly line track for conveying electric chips, the radial cross section of the assembly line track is an inverted T-shape, and an opening is provided at the top of the assembly line track for supporting the electric chips; a mounting plate, a photoelectric sensor and a blanking assembly are provided on the mounting plate; a fixed spot welding head and a movable spot welding head are arranged on opposite sides of the assembly line operating table, and the center connection line of the fixed spot welding head and the movable spot welding head is directly below the blanking assembly. The utility model supports the conveyor belt through the open side wall support at the top of the assembly line track, so that the battery cell is always in an upright state when moving. After the photoelectric sensor detects the position of the battery cell, the nickel sheet of the blanking assembly is unloaded, and the two spot welding heads are used to squeeze the battery cell and the nickel sheet to complete the fully automated spot welding of the battery cell electrode, with fast welding speed and improved processing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of spot welding machines, in particular to a spot welding machine with a function of moving a spot welding head. Background Art

[0002] Spot welding machine is a kind of mechanical equipment, which adopts the principle of double-sided double-point overcurrent welding. When working, two electrodes pressurize the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes. When the welding current flows from one electrode to the other electrode, an instantaneous heat welding is formed at the two contact resistance points, and the welding current instantly flows from the other electrode along the two workpieces to this electrode to form a loop, and will not damage the internal structure of the workpiece being welded.

[0003] At present, when producing batteries, nickel sheet spot welding machines are generally used to weld the electrodes of battery cells. During the use of existing spot welding machines, the battery cells are generally required to be manually held and the nickel sheets are pressed against the battery cells for spot welding, which is complicated to operate and has low efficiency.

[0004] Therefore, the present application provides a spot welding machine with a mobile spot welding head function to meet the demand. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a spot welding machine with a mobile spot welding head function to solve the problem that in the existing production of batteries, a nickel sheet spot welding machine is generally used to weld electrodes of battery cells. During the use of the existing spot welding machine, the battery cells are generally required to be manually held by hand and the nickel sheets are pressed tightly on the battery cells for spot welding, which results in complicated operation and low efficiency.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A spot welding machine with a movable spot welding head function comprises an assembly line operating table, an assembly line track is arranged on the top, a conveyor belt is arranged inside the assembly line track for conveying electric chips, the radial cross section of the assembly line track is an inverted T-shape, and an opening is arranged on the top of the assembly line track for supporting the electric chips; a mounting plate is fixed to the top of the assembly line operating table through a side plate, an opening for passing the assembly line track is arranged at the bottom of the mounting plate, and a photoelectric sensor and a blanking assembly are arranged on the mounting plate; a fixed spot welding head and a movable spot welding head are arranged on opposite sides of the assembly line operating table, and a center line connecting the fixed spot welding head and the movable spot welding head is directly below the blanking assembly.

[0008] Preferably, the conveyor belt is located inside the assembly line track near the bottom.

[0009] Preferably, two side panels are provided and are symmetrically distributed on both sides of the top of the assembly line operating table.

[0010] Preferably, it also includes a fixing seat, which is fixedly connected to one side of the top of the assembly line operating table and is used to install and fix the spot welding head.

[0011] Preferably, it also includes a movable seat, which is fixedly connected to the side of the top of the assembly line operating table opposite to the fixed seat. The outer side of the movable seat is provided with a back plate protruding upward, and an electric push rod is fixedly connected to the outer side of the back plate. The output end of the electric push rod passes through the back plate and is fixedly connected to the movable spot welding head. The movable spot welding head is slidably connected to the top of the movable seat.

[0012] Preferably, a hollow tube is provided on the side wall of the assembly line track on the side of the mounting plate opposite to the rear section of the assembly line. The hollow tube is a closed tubular structure and is an integral structure with the side wall of the assembly line track.

[0013] Preferably, it also includes a fan, which is fixed on one side of the top of the assembly line operating table, and the output end of the fan is connected to one end of the hollow tube through an air inlet pipe.

[0014] Preferably, one end of the hollow tube away from the air inlet pipe is connected to an air outlet pipe for exhausting air.

[0015] Compared with the prior art, the utility model has at least the following beneficial effects:

[0016] In the above scheme, the open side wall support at the top of the assembly line track cooperates with the conveyor belt to keep the battery cell in an upright state at all times when moving. After the photoelectric sensor detects the position of the battery cell, the nickel sheet of the unloading assembly is unloaded, and the two spot welding heads are close to extrude the battery cell and the nickel sheet to complete the fully automated spot welding of the battery cell electrodes, with fast welding speed and improved processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram from another angle.

[0020] In the figure: 1. Assembly line operating table; 2. Assembly line track; 3. Conveyor belt; 4. Side panel; 5. Mounting plate; 6. Photoelectric sensor; 7. Hollow tube; 8. Fan; 9. Air inlet pipe; 10. Air outlet pipe; 11. Unloading assembly; 12. Fixed seat; 13. Fixed spot welding head; 14. Movable seat; 15. Electric push rod; 16. Movable spot welding head.

[0021] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0022] The following is a detailed description of a spot welding machine with a mobile spot welding head function provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some known technologies, those skilled in the art may also adopt other alternative methods to implement them; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0023] like Figure 1 - Figure 2 As shown, an embodiment of the utility model provides a spot welding machine with a mobile spot welding head function, including an assembly line operating table 1, an assembly line track 2 is provided on the top, a conveyor belt 3 is provided inside the assembly line track 2 for conveying electric chips, the conveyor belt 3 is located inside the assembly line track 2 near the bottom, and is driven by an external motor. The radial cross-section of the assembly line track 2 is an inverted T-shape, and an opening is provided at the top of the assembly line track 2 for supporting the electric chips.

[0024] By arranging the assembly line track 2 in conjunction with the conveyor belt 3, the sheet-like battery cells are always in an upright state through the support of the open side wall at the top of the assembly line track 2 during the conveying process, which is convenient for subsequent spot welding work.

[0025] Furthermore, an arc-shaped protrusion for gathering and changing the opening spacing is provided on the inner side of the top opening on the assembly line track 2 near the spot welding area, ensuring that the battery cell is completely vertical when moving to the spot welding area, strengthening the positioning effect, and ensuring the spot welding accuracy.

[0026] like Figure 1 and Figure 2 As shown, it also includes a mounting plate 5, which is fixed to the top of the assembly line operating table 1 through the side plate 4, wherein two side plates 4 are provided and are symmetrically distributed on both sides of the top of the assembly line operating table 1, and an opening for passing the assembly line track 2 is opened at the bottom of the mounting plate 5, and a photoelectric sensor 6 and a blanking component 11 are provided on the mounting plate 5, and the photoelectric sensor 6 and the blanking component 11 are fixedly connected to the mounting plate 5 by bolts, so as to facilitate the adjustment of the height of the two, wherein the conductive head of the photoelectric sensor 6 faces obliquely downward and toward the spot welding area, so as to facilitate the monitoring of whether there are electric chips passing through.

[0027] The photoelectric sensor 6 detects the passing of the battery cell and starts the spot welding procedure, wherein the unloading component 11 is used to drop the nickel sheet used as the connecting electrode on the battery cell. A rolled nickel sheet strip is provided inside the unloading component 11. During spot welding, a nickel sheet strip of a fixed length is unwound and dropped to a certain height to be close to the battery cell located in the spot welding area, and at least part of the fallen nickel sheet overlaps with the battery cell. After the spot welding is completed, the nickel sheet strip is disconnected from the welded nickel sheet through the built-in cutting structure.

[0028] like Figure 2 As shown, it also includes a fixed spot welding head 13 and a movable spot welding head 16, which are arranged on opposite sides of the assembly line operating table 1, and the center line of the fixed spot welding head 13 and the movable spot welding head 16 is directly below the blanking component 11; a fixed seat 12, fixedly connected to one side of the top of the assembly line operating table 1, for installing and fixing the fixed spot welding head 13, wherein the welding head end of the fixed spot welding head 13 is close to the top opening of the assembly line track 2; and a movable seat 14, fixedly connected to the side of the top of the assembly line operating table 1 opposite to the fixed seat 12, an upwardly protruding back plate is provided on the outer side of the movable seat 14, an electric push rod 15 is fixedly connected to the outer side of the back plate, the output end of the electric push rod 15 passes through the back plate and is fixedly connected to the movable spot welding head 16, and the movable spot welding head 16 is slidably connected on the top of the movable seat 14.

[0029] The movable spot welding head 16 is driven by the electric push rod 15 to move closer to the fixed spot welding head 13 as a whole, and the welding heads on the two heads are in contact with the battery cell and the nickel sheet and squeezed to form a loop, thereby realizing rapid spot welding of the battery cell and the nickel sheet.

[0030] like Figure 1 As shown, a hollow tube 7 is provided on the side wall of the assembly line track 2 on the side of the mounting plate 5 relative to the rear section of the assembly line. The hollow tube 7 is a closed tubular structure and is an integrated structure with the side wall of the assembly line track 2, that is, the transition between the hollow tube 7 and the open side wall of the assembly line track 2 is smooth and in a straight line; and a fan 8 is fixed on one side of the top of the assembly line operating table 1, and the output end of the fan 8 is connected to one end of the hollow tube 7 through the air inlet pipe 9; the end of the hollow tube 7 away from the air inlet pipe 9 is connected to the air outlet pipe 10 for exhaust.

[0031] Through this arrangement, the fan 8 supplies air through the air duct formed by the hollow tube 7, the air inlet pipe 9, and the air outlet pipe 10, thereby achieving rapid cooling of the hollow tube 7, so that after welding, the battery core can be quickly cooled when it contacts the hollow tube 7 on the side wall of the assembly line track 2, thereby improving the spot welding quality.

[0032] The technical solution provided by the utility model is that when spot welding is performed, the sheet-like battery core is supported by the open side wall at the top of the assembly line track 2 and is always in an upright state. When approaching the spot welding area, the battery core is completely vertical through the arc-shaped protrusion on the inner side of the assembly line track 2. When the battery core is transported to the spot welding area, it is detected by the photoelectric sensor 6, the conveyor belt 3 is paused, the nickel sheet strip dropped by the unloading component 11 coincides with the battery core, and then the electric push rod 15 drives the movable spot welding head 16 as a whole to approach the fixed spot welding head 13, and cooperates with the welding heads on the two heads to contact and squeeze the battery core and the nickel sheet to form a loop, so as to realize rapid spot welding of the battery core and the nickel sheet, and then the unloading component 11 disconnects the nickel sheet, and finally the conveyor belt 3 is restarted, driving the battery core that has been spot welded to move backward, and the welding point is cured by rapid cooling due to its proximity to the hollow tube 7, wherein the side wall of the hollow tube 7 is rapidly cooled by blowing air from the fan 8.

[0033] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A spot welding machine with a mobile spot welding head function, characterized in that: include: An assembly line operating table (1) is provided with an assembly line track (2) on the top, a conveyor belt (3) is provided inside the assembly line track (2) for conveying electric chips, a radial cross section of the assembly line track (2) is an inverted T-shape, and an opening is provided at the top of the assembly line track (2) for supporting the electric chips; A mounting plate (5) is fixed to the top of the assembly line operating table (1) via a side plate (4); an opening for passing the assembly line track (2) is provided at the bottom of the mounting plate (5); and a photoelectric sensor (6) and a material discharge assembly (11) are provided on the mounting plate (5); The fixed spot welding head (13) and the movable spot welding head (16) are arranged on two opposite sides of the assembly line operating table (1), and the center line connecting the fixed spot welding head (13) and the movable spot welding head (16) is located directly below the blanking assembly (11).

2. The spot welding machine with a mobile spot welding head function according to claim 1, characterized in that: The conveyor belt (3) is located inside the assembly line track (2) near the bottom.

3. The spot welding machine with the function of moving the spot welding head according to claim 1, characterized in that: Two side panels (4) are provided and are symmetrically distributed on both sides of the top of the assembly line operating table (1).

4. The spot welding machine with the function of moving the spot welding head according to claim 1, characterized in that: It also includes a fixing seat (12) fixedly connected to one side of the top of the assembly line operating table (1) and used for installing and fixing the fixed spot welding machine head (13).

5. The spot welding machine with the function of moving the spot welding head according to claim 4, characterized in that: It also includes a movable seat (14) fixedly connected to the top of the assembly line operating table (1) on a side opposite to the fixed seat (12); the outer side of the movable seat (14) is provided with a back plate protruding upward; the outer side of the back plate is fixedly connected to an electric push rod (15); the output end of the electric push rod (15) passes through the back plate and is fixedly connected to the movable spot welding head (16); the movable spot welding head (16) is slidably connected to the top of the movable seat (14).

6. The spot welding machine with the function of moving the spot welding head according to claim 1, characterized in that: A hollow tube (7) is provided on the side wall of the assembly line track (2) located on the side of the mounting plate (5) opposite to the rear section of the assembly line. The hollow tube (7) is a closed tubular structure and is an integrated structure with the side wall of the assembly line track (2).

7. The spot welding machine with the function of moving the spot welding head according to claim 6, characterized in that: It also includes a fan (8) fixed to one side of the top of the assembly line operating table (1), and the output end of the fan (8) is connected to one end of the hollow tube (7) through an air inlet pipe (9).

8. The spot welding machine with the function of moving the spot welding head according to claim 7, characterized in that: One end of the hollow tube (7) away from the air inlet pipe (9) is connected to an air outlet pipe (10) for exhausting air.

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