A variable-position ultrasonic welding head for battery frames

Abstract

This utility model relates to the field of battery manufacturing equipment technology, specifically to a variable-position ultrasonic welding head for battery frames. It includes a battery processing device with multiple cylinders mounted on its top. Each cylinder has an ultrasonic welding head body mounted on its telescopic end. A motor drives a high-speed rotating roller brush, which, in conjunction with cleaning fluid sprayed from an L-shaped transmission water pipe, quickly removes metal debris, plastic burrs, and dust from the surface of the welding mold. Simultaneously, a dust extraction device generates negative pressure, which intercepts and collects impurities through a filter, preventing defects such as incomplete welding and detachment caused by impurities hindering ultrasonic energy transmission. This fundamentally improves welding quality stability, reduces the frequency of manual downtime for cleaning, and significantly lowers production interruptions and maintenance costs caused by impurities.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing equipment technology, specifically to a variable displacement ultrasonic welding head for battery frames. Background Technology

[0002] In the battery production process, the welding of battery frames is a crucial step. Ultrasonic welding has been widely used in battery frame welding due to its advantages such as high efficiency, energy saving and environmental protection. At present, the traditional ultrasonic welding head for battery frames is usually fixedly installed on the welding equipment, and its position is relatively fixed, so it can only be used to weld battery frames of specific specifications and shapes.

[0003] A search of Chinese Patent Publication No. CN211334612U reveals an ultrasonic welding system and an ultrasonic welding head. The ultrasonic welding head includes a mounting part, a connecting part, and a welding part. The mounting part includes a top surface, a first side surface, and a second side surface. The top surface is parallel to the transverse axis of the ultrasonic welding head. The first and second side surfaces are opposite each other and both parallel to the longitudinal axis of the ultrasonic welding head. The top surface and the first and second side surfaces are connected by a chamfer transition. The chamfer angle ranges from 30° to 60°, and the width of the chamfer in the transverse and longitudinal axes ranges from 5mm to 20mm. Therefore, during the transmission of ultrasonic vibration, the ultrasonic vibration in the top region of the welding part and / or the bottom region of the connecting part is uniformly distributed along the longitudinal axis of the ultrasonic welding head, ensuring stable welding strength and consistent quality.

[0004] In the process of transmitting ultrasonic vibration, the ultrasonic vibration of the top area of ​​the welded part and / or the bottom area of ​​the connection part is evenly distributed along the longitudinal axis of the ultrasonic welding head to ensure stable welding strength and quality. However, the above patent has certain limitations in use. During the ultrasonic welding process, the surface of the welding mold is prone to impurities due to high temperature melting, material debris or environmental dust. Existing ultrasonic welding heads generally lack an effective impurity cleaning mechanism, which leads to impurity accumulation that hinders the transmission of ultrasonic energy, resulting in insufficient bonding at the welding interface and defects such as incomplete welding and detachment. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a variable-position ultrasonic welding head for battery frames, which can effectively solve the problem that the existing ultrasonic welding heads generally lack an effective impurity cleaning mechanism, which leads to the accumulation of impurities that hinders the transmission of ultrasonic energy, resulting in insufficient bonding at the welding interface and defects such as incomplete welding and desoldering.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a variable-position ultrasonic welding head for battery frames, including a battery processing equipment. The top of the battery processing equipment is equipped with multiple cylinders, and the telescopic ends of the multiple cylinders are each equipped with an ultrasonic welding head body. A connecting frame plate is fixedly connected to the lower inner wall of the inlet of the battery processing equipment. Two electric telescopic rods are fixedly connected to the bottom end of the connecting frame plate, and concave connecting platforms are fixedly connected to the telescopic ends of the two electric telescopic rods.

[0008] The motor is fixedly connected to one end of the concave connecting platform;

[0009] A roller brush is movably engaged with the inner walls of both sides of a concave connecting platform, and the circumferential surface of the roller brush is provided with multiple drainage holes.

[0010] Furthermore, a connecting groove is provided at the top of the concave connecting platform, and a dust collection device is fixedly connected to the front end of the concave connecting platform. The air inlet of the dust collection device and the rear inner wall of the filter screen are interconnected, and a filter screen is provided in the connecting groove.

[0011] Furthermore, a protective cover is fixedly connected to the top of the concave connecting platform. The protective cover is fitted onto the outer surface of the roller brush, and a spiral transmission groove is provided inside the protective cover.

[0012] Furthermore, conical pads are fixedly connected to the inner walls of both sides of the connecting groove, and the filter screen is movably engaged between the two conical pads.

[0013] Furthermore, two infrared distance sensors are installed at the front end of the concave connecting platform.

[0014] Furthermore, the concave connecting platform is provided with two threaded sleeves, one of which is fixedly connected to the output end of the motor, and the other threaded sleeve is rotatably connected to the inner wall of the other side of the concave connecting platform. The roller brush is threadedly connected to the two threaded sleeves.

[0015] Furthermore, an L-shaped water transmission pipe is fixedly connected to one side of the concave connecting platform, a spiral telescopic pipe is fixedly connected to the outer surface of the L-shaped water transmission pipe, a positioning pipe is fixedly connected to the circumferential surface of the spiral telescopic pipe, and the L-shaped water transmission pipe, the roller brush, and one of the threaded sleeves are interconnected.

[0016] Beneficial effects

[0017] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0018] I. The core problem of traditional ultrasonic welding heads lacking an effective impurity cleaning mechanism is addressed by integrating a roller brush, a dust collection device, and a cleaning fluid delivery system to create an automated impurity cleaning process. The motor drives the roller brush to rotate at high speed, and the cleaning fluid sprayed from the L-shaped transmission water pipe can quickly remove metal debris, plastic burrs, and dust from the surface of the welding mold. The dust collection device simultaneously generates negative pressure, which intercepts and collects impurities through a filter screen, avoiding defects such as incomplete welding and desoldering caused by impurity accumulation hindering the transmission of ultrasonic energy. This fundamentally improves the stability of welding quality, reduces the frequency of manual downtime for cleaning, and significantly reduces production interruptions and maintenance costs caused by impurity issues.

[0019] II. This device is equipped with an intelligent and efficient cleaning system. The motor drives the roller brush to rotate at high speed. The elastic nylon bristles act like a precision cleaning guardian, quickly removing metal shavings, plastic burrs, and other impurities adhering to the surface of the welding mold. At the same time, the cleaning fluid delivered by the L-shaped water pipe is sprayed out through the drain hole of the roller brush, further softening stubborn impurities and enhancing the cleaning effect. The vacuum equipment is always on standby, generating a strong negative pressure to quickly suck in and filter the cleaned impurity particles, preventing secondary pollution. The entire cleaning process is not only highly efficient but also highly automated, requiring no frequent manual intervention, which greatly saves maintenance time and labor costs. In addition, the modular design of the device makes key components such as the roller brush and filter screen easy to disassemble and replace, significantly shortening the time for single maintenance. This effectively ensures the long-term stable operation of the equipment, reduces production stoppages caused by equipment failures, and comprehensively improves the company's production efficiency and product quality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is a first-view sectional view of the present invention;

[0023] Figure 3 This is a partial enlarged side view of the cleaning wheel of this utility model;

[0024] Figure 4 This is a cross-sectional view of the cleaning wheel of this utility model;

[0025] Figure 5 In this utility model Figure 4 Enlarged view of a portion at point A;

[0026] Figure 6 In this utility model Figure 4 A magnified view of section B.

[0027] Reference numerals: 1. Battery processing equipment; 2. Cylinder; 3. Connecting frame plate; 4. Electric telescopic rod; 5. Concave connecting platform; 501. Filter screen; 502. Connecting groove; 6. Motor; 7. Dust collection equipment; 8. Positioning tube; 9. Spiral telescopic tube; 10. L-shaped water transmission pipe; 11. Protective cover; 12. Roller brush; 13. Infrared distance sensor; 14. Threaded sleeve; 15. Drain hole; 16. Conical gasket; 17. Spiral transmission groove; 18. Ultrasonic welding head body. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] The present invention will be further described below with reference to the embodiments.

[0030] See attached document Figures 1-6 A variable-position ultrasonic welding head for battery frames includes a battery processing equipment 1, a plurality of cylinders 2 mounted on the top of the battery processing equipment 1, an ultrasonic welding head body 18 mounted on the telescopic ends of the plurality of cylinders 2, a connecting frame plate 3 fixedly connected to the lower inner wall of the feed inlet of the battery processing equipment 1, two electric telescopic rods 4 fixedly connected to the bottom end of the connecting frame plate 3, and a concave connecting platform 5 fixedly connected to the telescopic ends of the two electric telescopic rods 4.

[0031] Motor 6 is fixedly connected to one end of concave connecting platform 5;

[0032] The roller brush 12 is movably attached to the inner walls of both sides of the concave connecting platform 5, and multiple drainage holes 15 are provided on the circumferential surface of the roller brush 12.

[0033] In this embodiment, the battery processing equipment 1 serves as the basic support platform for the entire device, providing installation references and structural support for other functional components such as the cylinder 2 and connecting frame 3. Its feed inlet design is adapted to the automated conveying process of the battery frame, ensuring that the battery frame to be welded can be accurately positioned in the welding area. It is the core carrier connecting the welding system to the external production line. The cylinder 2, as a power actuator, drives the ultrasonic welding head body 18 through telescopic movement to achieve vertical Z-axis position adjustment and pressure control. It provides stable contact pressure during welding, ensuring a tight fit between the welding mold and the battery frame surface.

[0034] The ultrasonic welding head body 18 integrates an ultrasonic transducer to convert electrical energy into high-frequency mechanical vibration. Ultrasonic energy is applied to the welding surface of the battery frame through the welding mold, causing it to melt locally and form a welding joint. The connecting frame plate 3 is fixed to the inner wall below the feed port of the battery processing equipment 1, serving as the mounting base for the electric telescopic rod 4. The concave connecting platform 5 serves as a mechanical connection hub, with the output end of the electric telescopic rod 4 fixed at the front end and a motor 6 and roller brush 12 installed at one end.

[0035] The roller brush 12 uses elastic nylon bristles to clean the surface of the welding mold through circumferential rotation, removing attached solid impurities. Its cylindrical structure adapts to the arc-shaped wedge-shaped mating surface of the welding mold, effectively removing micron-sized particles and avoiding blind spots in traditional manual cleaning.

[0036] Drainage holes 15 are evenly distributed on the circumferential surface of the roller brush 12, and cleaning liquid is discharged simultaneously during the cleaning process, thereby improving the cleaning effect of the roller brush 12.

[0037] Please refer to the details. Figures 1-5 The top of the concave connecting platform 5 is provided with a connecting groove 502, and the front end of the concave connecting platform 5 is fixedly connected to a vacuum cleaner 7. The air inlet of the vacuum cleaner 7 and the rear inner wall of the filter screen 501 are interconnected, and the filter screen 501 is provided in the connecting groove 502.

[0038] In this embodiment: when the roller brush 12 cleans impurities from the surface of the ultrasonic welding head body 18, some impurities will detach from the welding head surface under the force of the brush bristles. The connecting groove 502 at the top of the concave connecting platform 5 is used to place the filter screen 501. The filter screen 501 can initially intercept larger particles of impurities, preventing them from entering the dust collection device 7 and causing blockage. The dust collection device 7 is fixed to the front end of the concave connecting platform 5, and its air inlet is connected to the inner wall of the filter screen 501. By generating negative pressure, smaller dust particles and debris intercepted by the filter screen 501 are sucked into the device, achieving efficient collection of impurities.

[0039] Please refer to the details. Figures 1-3A protective cover 11 is fixedly connected to the top of the concave connecting platform 5. The protective cover 11 is fitted onto the outer surface of the roller brush 12, and a spiral transmission groove 17 is provided inside the protective cover 11.

[0040] In this embodiment, a protective cover 11 fixed to the top of the concave connecting platform 5 is fitted onto the outer surface of the roller brush 12. During the rotation of the roller brush 12 to clean impurities, the protective cover 11 prevents impurities from splashing and spreading, ensuring a clean working environment and preventing contamination of other equipment components. The spiral transmission groove 17 inside the protective cover 11 works in conjunction with the rotational movement of the roller brush 12. When the roller brush 12 rotates, the impurities brushed off are thrown towards the inner wall of the protective cover 11 under centrifugal force and the force of the brush bristles, and then transported in a specific direction along the spiral transmission groove 17, and then centrally processed by the dust collection device 7.

[0041] Please refer to the details. Figures 1-4 Both sides of the inner wall of the connecting groove 502 are fixedly connected with conical pads 16, and the filter screen 501 is movably snapped between the two conical pads 16.

[0042] In this embodiment: when the filter screen 501 is inserted into the connecting groove 502, the filter screen 501 will fit tightly with the two conical pads 16. The elastic deformation of the conical pads 16 generates an inward squeezing force, thereby firmly locking the filter screen 501 and preventing it from loosening or shifting under the impact of the airflow generated by the vacuum cleaner 7.

[0043] Please refer to the details. Figures 1-5 Two infrared distance sensors 13 are installed at the front end of the concave connecting platform 5.

[0044] In this embodiment, the infrared distance sensor 13 can be pre-set with safe distance parameters according to the shape and position of the battery frame and welding head of different specifications. When the equipment is started, the electric telescopic rod 4 moves the concave connecting platform 5 and the roller brush 12. The infrared distance sensor 13 continuously emits infrared signals and receives signals reflected from the surface of the welding head. The actual distance between the two is obtained by calculating the round-trip time of the signals. Once the distance between the roller brush 12 and the welding head exceeds the preset range, the infrared distance sensor 13 will immediately feed the signal back to the control system. The control system will then adjust the extension and retraction of the electric telescopic rod 4 to precisely control the position of the roller brush 12, ensuring that it cleans the welding head within a safe and effective distance, and avoiding collision between the roller brush 12 and the welding head due to excessive distance, which could damage the equipment.

[0045] Please refer to the details. Figures 1-3 The concave connecting platform 5 is provided with two threaded sleeves 14. One threaded sleeve 14 is fixedly connected to the output end of the motor 6, and the other threaded sleeve 14 is rotatably connected to the inner wall of the other side of the concave connecting platform 5. The roller brush 12 is threadedly connected to the two threaded sleeves 14.

[0046] In this embodiment: the threaded sleeve 14 connected to the output end of the motor 6 provides rotational power, and the other threaded sleeve 14 is rotatably connected to the inner wall of the concave connecting platform 5 to ensure the stable rotation of the roller brush 12. The roller brush 12 is tightly fitted with the two sleeves through threads. After the motor 6 starts, it drives the threaded sleeve 14 to rotate, thereby driving the roller brush 12 to rotate synchronously, cleaning impurities from the surface of the ultrasonic welding head body 18, and realizing the dual functions of power transmission and structural stability.

[0047] Please refer to the details. Figures 1-4 An L-shaped water pipe 10 is fixedly connected to one side of the concave connecting platform 5. A spiral telescopic pipe 9 is fixedly connected to the outer surface of the L-shaped water pipe 10. A positioning pipe 8 is fixedly connected to the circumferential surface of the spiral telescopic pipe 9. The L-shaped water pipe 10, the roller brush 12, and one of the threaded sleeves 14 are interconnected.

[0048] In this embodiment, the L-shaped water pipe 10, together with the spiral telescopic pipe 9 and the positioning pipe 8, constitutes a cleaning fluid delivery system. The positioning pipe 8 fixes the position of the spiral telescopic pipe 9 to ensure pipeline stability; the spiral telescopic pipe 9 can extend and retract with the movement of the concave connecting platform 5, avoiding damage to the pipeline due to pulling. During operation, the cleaning fluid flows into the roller brush 12 through the L-shaped water pipe 10 and is sprayed out through the drain holes 15 on the circumferential surface of the roller brush 12. Combined with the rotation of the brush bristles, this achieves rinsing and cleaning of the weld head surface, while also assisting in the removal of impurities, thus improving cleaning effect and efficiency.

[0049] Working principle: The battery frame to be welded is conveyed to the feed inlet of the battery processing equipment 1 via an automated production line for precise positioning. Cylinder 2 drives the ultrasonic welding head body 18 to descend to its initial height, achieving displacement of the ultrasonic welding head body 18. The electric telescopic rod 4 adjusts the horizontal position of the concave connecting platform 5 according to the battery frame specifications. The infrared distance sensor 13 monitors the distance between the roller brush 12 and the welding head in real time. During welding, cylinder 2 pushes the welding head to adhere to the welding surface of the battery frame, applying pressure. The ultrasonic welding head body 18 converts electrical energy into high-frequency vibration to complete the welding. After welding, cylinder 2 raises the welding head, and the electric telescopic rod 4 moves the roller brush 12 below the welding head. The infrared distance sensor 13 calibrates the distance. Motor 6 drives roller brush 12 to rotate at high speed. At the same time, L-shaped water pipe 10 delivers cleaning fluid to roller brush 12 through spiral telescopic pipe 9. The cleaning fluid is sprayed out from drain hole 15 to flush the welding head. The impurities brushed off and the cleaning fluid mixture are thrown against the inner wall of protective cover 11 and converge above filter screen 501 of connecting groove 17 along spiral transmission groove 17. Dust collection equipment 7 starts to generate negative pressure to adsorb fine particles, while larger particles are intercepted by filter screen 501. After cleaning, concave connecting platform 5 resets and enters the next cycle. The whole process is precisely positioned through multi-axis linkage control. Protective cover 11 prevents impurities from splashing. Each module supports quick maintenance, effectively improving impurity removal efficiency, production continuity and equipment life.

[0050] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A variable-position ultrasonic welding head for battery frames, comprising, characterized in that: A battery processing equipment (1) is provided with multiple cylinders (2) installed at the top of the battery processing equipment (1). Each of the multiple cylinders (2) has an ultrasonic welding head body (18) installed at its telescopic end. A connecting frame plate (3) is fixedly connected to the inner wall of the feed port of the battery processing equipment (1). Two electric telescopic rods (4) are fixedly connected to the bottom of the connecting frame plate (3). A concave connecting platform (5) is fixedly connected to the telescopic ends of the two electric telescopic rods (4). Motor (6), the motor (6) is fixedly connected to one end of the concave connecting platform (5); A roller brush (12) is movably engaged with the inner walls of both sides of the concave connecting platform (5), and a plurality of drainage holes (15) are provided on the circumferential surface of the roller brush (12).

2. The variable-position ultrasonic welding head for a battery frame according to claim 1, characterized in that, The top of the concave connecting platform (5) is provided with a connecting groove (502), and the front end of the concave connecting platform (5) is fixedly connected with a vacuum cleaner (7). The air inlet of the vacuum cleaner (7) and the rear inner wall of the filter screen (501) are interconnected. The filter screen (501) is provided in the connecting groove (502).

3. The variable-position ultrasonic welding head for a battery frame according to claim 2, characterized in that, The top of the concave connecting platform (5) is fixedly connected to a protective cover (11), which is fitted onto the outer surface of the roller brush (12). A spiral transmission groove (17) is provided inside the protective cover (11).

4. The variable-position ultrasonic welding head for a battery frame according to claim 3, characterized in that, Both sides of the inner wall of the connecting groove (502) are fixedly connected with conical pads (16), and the filter screen (501) is movably engaged between the two conical pads (16).

5. The variable-position ultrasonic welding head for a battery frame according to claim 4, characterized in that, Two infrared spacing sensors (13) are installed at the front end of the concave connecting platform (5).

6. The variable-position ultrasonic welding head for a battery frame according to claim 5, characterized in that, The concave connecting platform (5) is provided with two threaded sleeves (14), one of which is fixedly connected to the output end of the motor (6), and the other is rotatably connected to the inner wall of the other side of the concave connecting platform (5). The roller brush (12) is threadedly connected to the two threaded sleeves (14).

7. The variable-position ultrasonic welding head for a battery frame according to claim 6, characterized in that, An L-shaped water pipe (10) is fixedly connected to one side of the concave connecting platform (5). A spiral telescopic pipe (9) is fixedly connected to the outer surface of the L-shaped water pipe (10). A positioning pipe (8) is fixedly connected to the circumferential surface of the spiral telescopic pipe (9). The L-shaped water pipe (10), the roller brush (12), and one of the threaded sleeves (14) are interconnected.

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