A current collector transfer welding device

Abstract

The utility model discloses a kind of fluid switching welding devices, it is related to fluid welding technical field, including equipment base, welding base is rotatably installed on the equipment base, bracket is fixedly installed on the equipment base, ultrasonic welding head is installed on the bracket, ultrasonic welding head is equipped with fluid between welding base, detection mechanism is fixedly installed on the equipment base, the detection mechanism includes the positioning frame body fixedly installed on equipment base, two driving rollers are rotatably installed in the positioning frame body, spiral rubber strip is fixedly installed on the driving roller surface, detection grating is fixedly installed on the positioning frame body, marking mechanism is installed in the middle position of the positioning frame body, the fluid switching welding device, detection mechanism can detect welding quality, marking mechanism can be marked on the problem place when welding problem exists, to carry out repair welding subsequently.

Description

Technical Field

[0001] This utility model relates to the field of current collector welding technology, specifically a current collector transfer welding device. Background Technology

[0002] Current collectors are a key component in chemical power sources such as lithium-ion batteries. They are usually made in foil or mesh form. Aluminum foil is often used for the positive electrode and copper foil is often used for the negative electrode. These materials must have excellent conductivity, stable binding with active materials, and resistance to electrolyte corrosion.

[0003] In the prior art, the authorized announcement number CN218732334U discloses a composite current collector transfer welding integrated device, including a composite current collector unwinding frame for unwinding the composite current collector; a first foil unwinding frame for unwinding a first foil; a second foil unwinding frame for unwinding a second foil; and a welding mechanism for welding the first foil and the second foil to both sides of the composite current collector to form a product.

[0004] By precisely fitting the welding head and welding base, ultra-thin foil can be firmly welded to the upper and lower surfaces of the current collector. However, during the welding process, improper control of operating parameters or equipment precision issues can lead to the potential for incomplete welds. If these defects are not detected and addressed promptly in subsequent inspection stages, they will cause a decrease in the conductivity of the weld joint, thereby affecting the overall performance and quality stability of the battery product. Therefore, it is essential to establish a comprehensive welding quality monitoring system to ensure that every weld point meets the process standards. Summary of the Invention

[0005] The purpose of this invention is to provide a current collector transfer welding device to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a current collector transfer welding device, comprising an equipment base, a welding base rotatably mounted on the equipment base, a bracket fixedly mounted on the equipment base, an ultrasonic welding head mounted on the bracket, a current collector provided between the ultrasonic welding head and the welding base, a detection mechanism fixedly mounted on the equipment base, the detection mechanism comprising a positioning frame fixedly mounted on the equipment base, two drive rollers rotatably mounted inside the positioning frame, a spiral rubber strip fixedly mounted on the surface of the drive rollers, a detection grating fixedly mounted on the positioning frame, and a marking mechanism mounted at the middle position of the positioning frame.

[0007] Preferably, a motor is fixedly installed on one side of the positioning frame, a positioning support foot is provided at the bottom of the positioning frame, a positioning through hole is provided on the positioning support foot, and a synchronous gear is fixedly installed at the end of each of the two driving rollers, and the two synchronous gears mesh together.

[0008] Preferably, the output end of the motor is provided with a coupling, and one end of the drive roller is fixedly installed on the output end of the motor through the coupling.

[0009] Preferably, the positioning frame is equipped with a bearing, the drive roller is rotatably mounted on the positioning frame via the bearing, the positioning through hole is provided with a bolt, and the positioning support leg is fixedly mounted on the equipment base by the bolt.

[0010] Preferably, the marking mechanism includes a mounting frame fixedly installed on the positioning frame, a pigment cylinder fixedly installed on the mounting frame, a piston plate movably installed inside the pigment cylinder, a servo electric actuator fixedly installed at the upper end of the pigment cylinder, and the output end of the servo electric actuator fixedly installed on the piston plate, a nozzle fixedly installed at the lower end of the pigment cylinder, a filling pipe connected to the lower end of the pigment cylinder, and a sealing cap connected to the end of the filling pipe.

[0011] Preferably, the upper end of the pigment cylinder has a through hole, and the output end of the servo electric actuator extends into the pigment cylinder through the through hole.

[0012] Preferably, the bottom of the pigment cylinder is provided with a threaded interface, and the nozzle is connected to the bottom of the pigment cylinder through the threaded interface.

[0013] Preferably, the pigment cylinder is fixedly mounted on the mounting bracket by a mounting bracket.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. In this application, the spiral rubber strip on the drive roller abuts against the surface of the foil. With the coordinated action of the motor and synchronous gears, the two drive rollers rotate synchronously. During synchronous rotation, the spiral rubber strip performs a spiral motion, thereby applying a lateral thrust to the foil on the upper and lower surfaces of the current collector. If there is a defect in the welding quality, the foil on the upper and lower surfaces of the current collector will shift to both sides. The shifted foil will block the light path of the detection grating, thus allowing the welding quality to be detected using the detection grating.

[0015] 2. In this application, when welding quality problems occur, the detection grating will send a drive signal to the servo electric actuator, causing the servo electric actuator to extend a certain stroke, thereby driving the piston plate to move downward a certain distance, applying pressure to the pigment in the pigment cylinder, causing the pigment to be sprayed out through the nozzle, marking the place where the welding quality problem exists, so that subsequent repair welding operations can be carried out. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3This is a schematic diagram of the testing mechanism of this utility model; Figure 4 This is a rear view of the testing mechanism of this utility model; Figure 5 This is a schematic diagram of the marking mechanism of this utility model.

[0017] The markings in the diagram are: 1. Equipment base; 2. Welding base; 3. Ultrasonic welding head; 4. Support; 5. Current collector; 6. Detection mechanism; 601. Positioning frame; 602. Motor; 603. Drive roller; 604. Positioning support foot; 605. Positioning through hole; 606. Spiral rubber strip; 607. Detection grating; 608. Synchronous gear; 7. Marking mechanism; 701. Servo electric actuator; 702. Piston plate; 703. Pigment cylinder; 704. Mounting bracket; 705. Nozzle; 706. Filling pipe; 707. Sealing cap. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: As Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a current collector transfer welding device, including a device base 1, a welding base 2 rotatably mounted on the device base 1, a bracket 4 fixedly mounted on the device base 1, an ultrasonic welding head 3 mounted on the bracket 4, a current collector 5 provided between the ultrasonic welding head 3 and the welding base 2, a detection mechanism 6 fixedly mounted on the device base 1, and a marking mechanism 7 installed in the middle position of the positioning frame 601.

[0020] Specifically, the current collector 5 and the foil can be pulled through the gap between the ultrasonic welding head 3 and the welding base 2, thereby welding the foil to the upper and lower surfaces of the current collector 5. The inspection mechanism 6 can inspect the welding quality, and if there are problems with the welding, the marking mechanism 7 can mark the problematic areas for subsequent repair welding.

[0021] Example 2: Figure 2 , Figure 3 and Figure 4As shown, the detection mechanism 6 includes a positioning frame 601 fixedly installed on the equipment base 1. Two drive rollers 603 are rotatably installed inside the positioning frame 601. A spiral rubber strip 606 is fixedly installed on the surface of the drive rollers 603. A detection grating 607 is fixedly installed on the positioning frame 601. A motor 602 is fixedly installed on one side of the positioning frame 601. A positioning support foot 604 is provided at the bottom of the positioning frame 601. A positioning through hole 605 is opened on the positioning support foot 604. Synchronous gears 608 are fixedly installed at the ends of the two drive rollers 603, and the two synchronous gears 608 mesh with each other. A coupling is provided at the output end of the motor 602. One end of the drive roller 603 is fixedly installed on the output end of the motor 602 through the coupling.

[0022] Specifically, after welding, the current collector 5 passes through the gap between the drive rollers 603, and the spiral rubber strip 606 on the drive rollers 603 comes into contact with the foil surface. With the coordinated operation of the motor 602 and the synchronous gear 608, the two drive rollers 603 rotate synchronously. When the two drive rollers 603 rotate synchronously, the spiral rubber strip 606 performs a spiral motion, thereby applying a lateral thrust to the foil on the upper and lower surfaces of the current collector 5. If there is a problem with the welding quality, the foil on the upper and lower surfaces of the current collector 5 will move to both sides. The foil moving to both sides will block the light path of the detection grating 607, thus allowing the detection grating 607 to detect the welding quality.

[0023] Example 3: Figure 3 and Figure 5 As shown, the marking mechanism 7 includes a mounting bracket 704 fixedly installed on the positioning frame 601. A pigment cylinder 703 is fixedly installed on the mounting bracket 704. A piston plate 702 is movably installed inside the pigment cylinder 703. A servo electric actuator 701 is fixedly installed at the upper end of the pigment cylinder 703, and the output end of the servo electric actuator 701 is fixedly installed on the piston plate 702. A nozzle 705 is fixedly installed at the lower end of the pigment cylinder 703. A filling pipe 706 is connected to the lower end of the pigment cylinder 703. A sealing cap 707 is connected to the end of the filling pipe 706. A through hole is opened at the upper end of the pigment cylinder 703, and the output end of the servo electric actuator 701 extends into the pigment cylinder 703 through the through hole.

[0024] Specifically, when a welding defect is detected, the detection grating 607 immediately sends a signal to the control system. Upon receiving the signal, the control system generates a precise drive command, which is transmitted to the execution unit of the servo electric actuator 701. After receiving the drive signal, the servo electric actuator 701 extends forward precisely by a predetermined short distance. This extension action is transmitted to the connected piston plate 702, causing it to smoothly move downward a short distance.

[0025] The downward movement of the piston plate 702 creates a controlled pressure environment within the well-sealed pigment cylinder 703. This pressure change acts on the specialized marking pigment stored in the pigment cylinder 703, forcing it to flow towards the nozzle 705. The marking pigment is ejected from the fine nozzle of the nozzle 705, accurately forming a clearly visible marking point at the location of the weld defect. This marking method not only precisely locates the defect but also provides clear operational guidance for subsequent repair welding processes.

[0026] Working principle: During operation, the current collector 5 and the foil are first pulled through the gap between the ultrasonic welding head 3 and the welding base 2, thus welding the foil to the upper and lower surfaces of the current collector 5. After welding, the current collector 5 is pulled through the gap between the drive rollers 603, and the spiral rubber strip 606 on the drive rollers 603 abuts against the foil surface. Through the cooperation of the motor 602 and the synchronous gear 608, the two drive rollers 603 rotate synchronously. When the two drive rollers 603 rotate synchronously, the spiral rubber strip 606 moves spirally, thus applying a lateral thrust to the foil on the upper and lower surfaces of the current collector 5. If there is a problem with the welding quality, the foil on the upper and lower surfaces of the current collector 5 will move to both sides. The foil moving to both sides will block the light path of the detection grating 607, thereby using the detection grating 607 to detect the welding quality. Furthermore, when there is a problem with the welding quality, the detection grating 607 will send a drive signal to the servo electric actuator 701, causing the servo electric actuator 701 to extend a short distance, thereby driving the piston plate 702 to move downward a short distance, applying pressure to the pigment in the pigment cylinder 703, causing the pigment to be sprayed out through the nozzle 705, marking the place where there is a welding problem, so that subsequent repair welding can be performed.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A current collector transfer welding device, comprising a device base (1), a welding base (2) rotatably mounted on the device base (1), a bracket (4) fixedly mounted on the device base (1), an ultrasonic welding head (3) mounted on the bracket (4), and a current collector (5) provided between the ultrasonic welding head (3) and the welding base (2), characterized in that: A detection mechanism (6) is fixedly installed on the equipment base (1). The detection mechanism (6) includes a positioning frame (601) fixedly installed on the equipment base (1). Two drive rollers (603) are rotatably installed inside the positioning frame (601). A spiral rubber strip (606) is fixedly installed on the surface of the drive rollers (603). A detection grating (607) is fixedly installed on the positioning frame (601). A marking mechanism (7) is installed in the middle of the positioning frame (601).

2. The current collector transfer welding device according to claim 1, characterized in that: A motor (602) is fixedly installed on one side of the positioning frame (601). The bottom of the positioning frame (601) is provided with a positioning support (604). A positioning through hole (605) is opened on the positioning support (604). Synchronous gears (608) are fixedly installed at the ends of the two drive rollers (603), and the two synchronous gears (608) mesh together.

3. The current collector transfer welding device according to claim 2, characterized in that: The output end of the motor (602) is provided with a coupling, and one end of the drive roller (603) is fixedly installed on the output end of the motor (602) through the coupling.

4. The current collector transfer welding device according to claim 3, characterized in that: The positioning frame (601) is equipped with a bearing, the drive roller (603) is rotatably mounted on the positioning frame (601) through the bearing, the positioning through hole (605) is provided with a bolt, and the positioning support (604) is fixedly mounted on the equipment base (1) by bolts.

5. The current collector transfer welding device according to claim 4, characterized in that: The marking mechanism (7) includes a mounting bracket (704) fixedly installed on the positioning frame (601). A pigment cylinder (703) is fixedly installed on the mounting bracket (704). A piston plate (702) is movably installed inside the pigment cylinder (703). A servo electric actuator (701) is fixedly installed at the upper end of the pigment cylinder (703), and the output end of the servo electric actuator (701) is fixedly installed on the piston plate (702). A nozzle (705) is fixedly installed at the lower end of the pigment cylinder (703). A filling pipe (706) is connected to the lower end of the pigment cylinder (703), and a sealing cap (707) is connected to the end of the filling pipe (706).

6. The current collector transfer welding device according to claim 5, characterized in that: The pigment cylinder (703) has a through hole at its upper end, and the output end of the servo electric actuator (701) extends into the pigment cylinder (703) through the through hole.

7. A current collector transfer welding device according to claim 6, characterized in that: The bottom of the pigment cylinder (703) is provided with a threaded interface, and the nozzle (705) is connected to the bottom of the pigment cylinder (703) through the threaded interface.

8. The current collector transfer welding device according to claim 7, characterized in that: The pigment cylinder (703) is fixedly mounted on the mounting bracket (704) by the mounting bracket (704).

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