An ultrasonic piercing welding device

Abstract

The utility model provides a kind of ultrasonic wave puncture welding device, including workbench, workbench is provided: rotary platform, its top is provided with bearing turntable;At least two profiling seats, be located on bearing turntable, and array distribution along bearing turntable circumferential direction;Several compression structures, array is set on bearing turntable to respectively correspond each profiling seat;Welding module, including ultrasonic welding head, and for driving ultrasonic welding head front extension or retreat drive structure;Multi-axis robot, it is connected in welding module, for driving welding module to the workpiece on the profiling seat carries out ultrasonic welding.The utility model is through multi-station rotary structure, high-precision drive system, dynamic balance compensation and safety protection design, systematically solves the problem that traditional welding equipment is low in efficiency, poor in precision, and insufficient in stability, especially applicable to high-precision, large-batch production scene such as automobile accessories.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically, it demonstrates an ultrasonic puncture welding device. Background Technology

[0002] Existing welding machines are independent. For a product requiring manual welding, it typically needs to be fixed in place first, followed by manual welding. This process involves many steps, resulting in low production efficiency, high labor input, high labor intensity, and significant production errors. In the manufacturing industry, especially in the production of automotive parts, there is an urgent need for equipment that utilizes ultrasonic piercing welding to improve production efficiency and meet practical needs. Utility Model Content

[0003] The purpose of this invention is to provide an ultrasonic puncture welding device that is highly automated and efficient.

[0004] The technical solution is as follows:

[0005] An ultrasonic puncture welding device includes a workbench, on which:

[0006] A rotating platform with a load-bearing turntable on top, which is driven by the rotating platform to make circular motion;

[0007] At least two contoured placement seats are provided on the bearing turntable and are arranged in an array along the circumference of the bearing turntable;

[0008] Several clamping structures are arrayed on the carrier turntable to correspond to each contour placement seat, and are used to fix the workpiece on the contour placement seat;

[0009] The welding module includes an ultrasonic welding head and a drive structure for driving the ultrasonic welding head to extend forward or retract backward.

[0010] A multi-axis robot, connected to the welding module, is used to drive the welding module to perform ultrasonic welding on the workpiece on the contour placement seat.

[0011] The circular motion design of the rotating platform and the carrying turntable enables multi-station cyclic operation, reducing workpiece loading and unloading waiting time and increasing production efficiency; the array distribution of the contour placement seat and the collaboration with the multi-axis robot are suitable for precision welding of more complex workpieces; the automated operation of the clamping structure and welding module reduces manual intervention, lowers labor intensity, and avoids human error.

[0012] In addition, the ultrasonic piercing welding device according to the above embodiments of this utility model may also have the following additional technical features:

[0013] According to one embodiment of the present invention, the driving structure includes:

[0014] Mounting plate;

[0015] A ball screw assembly is fixed to the mounting plate. The movable part of the ball screw assembly is connected to the ultrasonic welding head through a transition plate. A driven pulley is provided at one end of the rotating part of the ball screw assembly.

[0016] A drive motor is fixed to the mounting plate, and its drive end is provided with a drive pulley, and a synchronous belt is connected between the drive pulley and the driven pulley.

[0017] The drive structure uses a ball screw assembly and a drive motor for mechanical transmission, enabling linear movement of the ultrasonic welding head and ensuring consistent puncture depth. The active pulley and the driven pulley are connected by a synchronous belt, which avoids gear meshing gaps, eliminates ultrasonic welding head vibration, and ensures stable output of ultrasonic welding energy.

[0018] The moving body of the ball screw assembly and the adapter plate are connected to a balance block. A slide rail is provided on the mounting plate, and a slider is slidably mounted on the slide rail in a snap-fit ​​manner. The slider is connected to the balance block. The slide rail guide design ensures that the ultrasonic welding head moves linearly without deviation, avoiding welding misalignment of the workpiece due to vibration.

[0019] The mounting plate features an array of several slotted photoelectric sensors, and the balance block has a trigger tip for engaging these sensors. The slotted photoelectric sensors detect the position of the trigger tip in real time, enabling closed-loop control of the ultrasonic welding head's movement distance and effectively controlling the puncture depth.

[0020] According to one embodiment of the present invention, several clamping structures are jointly disposed on a lifting frame, the lifting frame being located at the center of the surface of the bearing turntable, and the clamping structure includes:

[0021] A support frame is provided on the raised frame;

[0022] A drive cylinder component is mounted on the bracket;

[0023] The displacement mounting body is movably mounted on the bracket via a slider and slide rail assembly and is connected to the output end of the drive cylinder component;

[0024] A clamping rod is provided on the displacement mounting body, and a buffer pad is provided at the bottom end of the clamping rod.

[0025] The modular clamping structure allows for quick replacement of different contoured placement seats, adapting to the needs of multi-variety production.

[0026] According to one embodiment of the present invention, the workbench is further provided with several balancing groups, which are arranged in a circular array. Each balancing group includes:

[0027] The base frame is mounted on the workbench frame;

[0028] The base has a strip-shaped groove, and a limiting screw is inserted into the strip-shaped groove. The other end of the limiting screw is threaded to the base frame.

[0029] A roller, mounted on the base, is used to make rolling contact with the bottom surface of the bearing turntable;

[0030] An extension body is provided on the base frame and located below the base. A jacking screw is threadedly connected to the extension body, and the top end of the jacking screw abuts and contacts the base.

[0031] The rollers make rolling contact with the bottom surface of the turntable, reducing friction loss and ensuring stable long-term operation of the turntable; moreover, the height of the rollers can be adjusted by adjusting the screw to ensure that the turntable always remains horizontal.

[0032] According to one embodiment of this utility model, a protective fence is also included around the workbench. This isolates the welding area and eliminates the risk of mechanical injury.

[0033] Compared with the prior art, the beneficial effects of this utility model are as follows: through the multi-station rotating structure, high-precision drive system, dynamic balance compensation and safety protection design, it systematically solves the problems of low efficiency, poor precision and insufficient stability of traditional welding equipment, and is especially suitable for high-precision, mass production scenarios such as automotive parts. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of an ultrasonic puncture welding device according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the drive structure on the welding module according to an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the clamping structure according to an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram related to the balance group in an embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram of the layout of an ultrasonic puncture welding device according to another embodiment of the present invention;

[0039] The following markings in the attached diagram are: 1-Workbench frame, 2-Rotating platform, 3-Bearing turntable, 4-Shaping placement seat, 5-Clamping structure, 6-Welding module, 7-Multi-axis robot, 8-Lifting frame, 9-Balancing assembly, 10-Guardian fence; 51-Support, 511-Slider rail assembly, 52-Drive cylinder component, 53-Displacement mounting body, 54-Clamping rod, 541-Buffer pad; 61-Ultrasonic welding head. 62-Mounting plate, 63-Ball screw assembly, 64-Drive motor, 65-Balance block, 621-Slide rail, 622-Slotted photoelectric sensor, 631-Adapter plate, 632-Driven pulley, 641-Drive pulley, 651-Slider, 652-Trigger end; 91-Base frame, 92-Base, 93-Limiting screw, 94-Roller, 95-Extension body, 96-Pushing screw, 921-Strip groove. Detailed Implementation

[0040] 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.

[0041] Reference Figures 1 to 5 As shown in the figure, this utility model embodiment proposes an ultrasonic piercing welding device, mainly including a workbench 1, which is formed by welding steel structure, and the table surface is covered with thick steel plates. A rotating platform 2 is installed at the top center of the workbench 1. This rotating platform is a DD motor direct-drive type turntable with high positioning accuracy. The output end of the rotating platform 2 is connected upward to a horizontal load-bearing turntable 3 through a flange. This load-bearing turntable is made of aluminum alloy disc, and the surface is anodized to form a wear-resistant layer.

[0042] Three contouring supports 4 are distributed at equal angles along the circumference of the edge of the bearing turntable 3. Alternatively, other numbers of contouring supports may be used. Each support, for example, is CNC machined from nylon material, and its top groove perfectly matches the contour of the bottom surface of the workpiece to be welded. A clamping structure 5 is positioned above each contouring support 4. These three clamping structures 5 are fixed to the center of the bearing turntable 3 by a lifting frame 8. These clamping structures 5 are arranged in a circumferential array on the bearing turntable 3 to fix the workpiece on the contouring support 4, preventing workpiece displacement and ensuring the welding process proceeds normally.

[0043] Two sets of multi-axis robots 7 are also installed on the workbench 1, distributed on the outer side of the rotating platform 2. The output ends of the multi-axis robots 7 are connected to welding modules 6 via flanges. The welding modules 6 are driven by the multi-axis robots 7 to perform ultrasonic welding on the workpieces on the contour placement seat 4. The welding module includes an ultrasonic welding head and a drive structure for driving the ultrasonic welding head to extend or retract.

[0044] In one embodiment, the drive structure is designed as follows: it includes a mounting plate 62, a ball screw assembly 63, and a drive motor 64. Mounting plate 62 is connected to the output end of multi-axis robot 7 via flange. Ball screw assembly 63 is fixed to the front of mounting plate 62 along its length. The moving part of ball screw assembly 63 is connected to ultrasonic welding head 61 via adapter plate 631. The layout direction of ultrasonic welding head 61 is consistent with the extension direction of ball screw assembly 63. A driven pulley 632 is provided at one end of the rotating part of ball screw assembly 63. Drive motor 64 is also fixed on mounting plate 62, and its layout direction is the same as that of ball screw assembly 63. A drive pulley 641 is provided at the drive end of drive motor 64. A synchronous belt (not shown in the figure) is connected between drive pulley 641 and driven pulley 632. Thus, through the driving rotation of drive motor 64, the linear motion of the moving part on ball screw assembly 63 is realized, thereby controlling the linear piercing of ultrasonic welding head 61.

[0045] In this implementation, the drive structure uses a ball screw assembly and a drive motor for coordinated transmission to achieve linear movement of the ultrasonic welding head and ensure consistent puncture depth. The active pulley and the driven pulley are connected by a synchronous belt to avoid the gap problem that exists in direct gear meshing, eliminate ultrasonic welding head vibration, and ensure stable output of ultrasonic welding energy.

[0046] Based on the above technical solution, the moving body of the ball screw assembly 63 and the adapter plate 631 are connected to a balance block 65. A slide rail 621 is provided on the mounting plate 62, and a slider 654 is slidably mounted on the slide rail 621 in a snap-fit ​​manner. The slider 654 is connected to the balance block 65. The slider and slide rail guide design ensures that the ultrasonic welding head moves linearly without deviation, avoiding welding misalignment of the workpiece caused by vibration.

[0047] Furthermore, several slotted photoelectric sensors 622 are arrayed on the mounting plate 62, for example, three slotted photoelectric sensors, each representing a different stroke position. A trigger end 652 for triggering the slotted photoelectric sensors 622 is provided on the balance block 65. The slotted photoelectric sensors detect the position of the trigger end in real time, realizing closed-loop control of the ultrasonic welding head's movement distance and effectively controlling the penetration depth of the ultrasonic welding head.

[0048] In other possible implementations, three clamping structures 5 are jointly mounted on a lifting frame 8 in a circular array. The lifting frame 8 is located at the center of the surface of the bearing turntable 3. Each clamping structure 5 includes a bracket 51, a driving cylinder 52, a displacement mounting body 53, and a clamping rod 54. The bracket 51 is vertically connected to the lifting frame 8 and protrudes outward in a horizontal position. The driving cylinder 52 is vertically mounted on the upper part of the bracket 51, with its driving end pointing vertically downward. The displacement mounting body 53 is movably mounted on the front of the bracket 51 via a slider rail assembly 511. The displacement mounting body 53 is arranged along the height direction of the bracket 51. The top of the displacement mounting body 53 is connected to the driving end of the driving cylinder 52, allowing the displacement mounting body 53 to slide up and down relative to the bracket 51. The clamping rod 54 is vertically mounted at the bottom of the displacement mounting body 53, and a buffer pad 541 is provided at the bottom of the clamping rod 54 to prevent damage to the workpiece. Once the workpiece is accurately placed on the contour mounting base, the clamping rod presses the workpiece in place, thereby achieving the positioning of the workpiece.

[0049] In other possible implementations, at least three balancing groups 9 are provided between the workbench 1 and the rotating platform 3. These balancing groups 9 are arranged in a circular array around the rotation center of the rotating platform 2. Each balancing group 9 includes a base frame 91, a base 92, rollers 94, and an extension 95. The base frame 91 is vertically mounted on the workbench 1, while the base 92 is located on one side of the base frame 1 and is movably assembled with it. Specifically, the base 92 has two vertical slots 921, and a limiting screw 93 is movably inserted into each slot. The other end of the limiting screw 93 is threaded to the base frame 91, meaning that the base 92 can move up and down relative to the base frame 91 through the engagement of the limiting screw 93 and the slot 921. A rotatable roller 94 is provided on the upper outer side of the base 92. This roller 94 is used to move up and down relative to the platform 91. The bottom surface of the turntable 3 makes rolling contact with the base. An extension 95 is located at the lower part of the base frame 91 and directly below the base 92. A threaded actuating screw 96 with one end protruding upwards is connected to the extension 95. The top end of the actuating screw 96 can abut against the bottom end of the base 92 to support it. By turning the actuating screw 96, the position and height of the base 92 relative to the base frame 91 can be changed, thereby adjusting the height of the roller 94. The base 92 can be secured to the base frame 91 by a limiting screw 93. In this way, the roller makes rolling contact with the bottom surface of the turntable, reducing friction loss and ensuring stable long-term operation of the turntable. Furthermore, the roller height can be adjusted by the actuating screw to ensure the turntable remains level.

[0050] In other embodiments, a protective fence 10 is also included around the workbench 1. The protective fence isolates the welding area, eliminates the risk of mechanical injury, and provides a certain degree of safety protection.

[0051] The corresponding workflow is as follows:

[0052] The operator places the workpiece into one of the contour placement seats at the first station, and the corresponding clamping structure automatically clamps and positions it; the rotary platform rotates the workpiece to the corresponding welding station position; the corresponding six-axis robot drives the welding module to move along a preset trajectory, and the drive motor controls the piercing depth of the ultrasonic welding head; the ultrasonic generator outputs high-frequency vibration to complete single-point welding; the rotary table continuously indexes and operates, realizing cyclic operation of multiple stations.

[0053] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. An ultrasonic puncture welding device, comprising a workbench (1), characterized in that, The workbench (1) is equipped with: A rotating platform (2) is provided with a load-bearing turntable (3) on its top. The rotating platform (2) drives the load-bearing turntable (3) to make a circular motion. At least two contoured placement seats (4) are provided on the bearing turntable (3) and are arranged in an array along the circumference of the bearing turntable (3); Several clamping structures (5) are arrayed on the bearing turntable (3) to correspond to each contour placement seat (4) respectively, for fixing the workpiece on the contour placement seat (4); The welding module (6) includes an ultrasonic welding head (61) and a drive structure for driving the ultrasonic welding head (61) to extend forward or retract backward. A multi-axis robot (7) is connected to the welding module (6) and is used to drive the welding module (6) to perform ultrasonic welding on the workpiece on the contour placement seat (4). The driving structure includes: Mounting plate (62); A ball screw assembly (63) is fixed to the mounting plate (62). The movable part of the ball screw assembly (63) is connected to the ultrasonic welding head (61) through a transition plate (631). A driven pulley (632) is provided at one end of the rotating part of the ball screw assembly (63). A drive motor (64) is fixed to the mounting plate (62), and its drive end is provided with a drive pulley (641). A synchronous belt is connected between the drive pulley (641) and the driven pulley (632).

2. The ultrasonic puncture welding device according to claim 1, characterized in that, The moving body of the ball screw assembly (63) and the adapter plate (631) are connected together to a balance block (65). A slide rail (621) is provided on the mounting plate (62), and a slider (651) is slidably installed on the slide rail (621) in a snap-fit ​​manner. The slider (651) is connected to the balance block (65).

3. The ultrasonic puncture welding device according to claim 2, characterized in that, The mounting plate (62) is arrayed with several slotted photoelectric sensors (622), and the balance block (65) is provided with a trigger end (652) that can be used to trigger the slotted photoelectric sensors (622).

4. The ultrasonic puncture welding device according to claim 1, characterized in that, Several clamping structures (5) are collectively mounted on a lifting frame (8), which is located at the center of the surface of the bearing turntable (3). The clamping structure (5) includes: A bracket (51) is provided on the raised frame (8); A drive cylinder component (52) is mounted on the bracket (51); The displacement mounting body (53) is movably mounted on the bracket (51) via a slider rail assembly (511) and is connected to the output end of the drive cylinder component (52); A clamping rod (54) is provided on the displacement mounting body (53), and a buffer pad (541) is provided at the bottom end of the clamping rod (54).

5. The ultrasonic puncture welding device according to claim 1, characterized in that, The workbench (1) is also provided with several balancing groups (9), which are arranged in a circular array. The balancing groups (9) include: The base frame (91) is located on the workbench frame (1). The base (92) has a strip groove (921) on it, and a limiting screw (93) is inserted in the strip groove (921). The other end of the limiting screw (93) is threaded to the base frame (91). Roller (94) is provided on the base (92) for rolling contact with the bottom surface of the bearing turntable (3); An extension body (95) is provided on the base frame (91) and located below the base (92). A jacking screw (96) is threadedly connected to the extension body (95), and the top end of the jacking screw (96) abuts against the base (92).

6. The ultrasonic puncture welding device according to claim 1, characterized in that, It also includes a protective fence (10) surrounding the workbench (1).

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