Helical tooth welding head for ultrasonic welding

Abstract

The utility model discloses a helical tooth welding head for ultrasonic welding, and relates to the technical field of ultrasonic welding. The helical tooth welding head for ultrasonic welding comprises a circular block and a dismounting and mounting mechanism, the dismounting and mounting mechanism is arranged below the circular block, the dismounting and mounting mechanism comprises a placing groove, limiting grooves, a positioning block and a sliding cavity, the placing groove is formed in the bottom of the circular block, the inner walls of the two sides of the placing groove are each provided with a set of limiting grooves, and the positioning block is arranged in the placing groove; the outer wall of the positioning block and the inner wall of the placing groove are tightly attached but not connected, two sets of symmetrically-arranged sliding cavities are formed in the positioning block, and the sliding cavities communicate with the exterior of the positioning block. The welding tooth connecting piece can be taken down by directly pulling the welding tooth connecting piece downwards, the positioning block can be directly pushed into the placing groove during mounting, dismounting and mounting are simple and easy to operate, workers can conveniently and rapidly replace the welding tooth connecting piece when welding different workpieces, the workload of the workers is reduced, and the dismounting and mounting efficiency of the welding head is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic welding, and particularly relates to an inclined-tooth welding head for ultrasonic welding. Background Technique

[0002] Ultrasonic welding utilizes high-frequency vibration waves to be transmitted to the surfaces of two objects to be welded. Under the condition of applying pressure, the surfaces of the two objects rub against each other to form a fusion between molecular layers. The ultrasonic welding head is a general term for all ultrasonic emission ends and is an indispensable part of ultrasonic welding equipment. Its function is to couple the ultrasonic waves generated by the transducer into the object to be processed, and the shape of the end face of the welding head should adapt to the shape of the workpiece to be welded.

[0003] Chinese patent document CN210937641 U discloses an inclined-tooth welding head for ultrasonic welding. It includes an end part, a middle part, and a tail part; the end part is connected to the middle part, and the middle part is connected to the tail part. The width of the end part is greater than that of the middle part, and the width of the middle part is greater than that of the tail part. The end part accounts for 36% of the overall length of the welding head, the middle part accounts for 14% of the overall length of the welding head, and the tail part accounts for 50% of the overall length of the welding head; 250 welding teeth are evenly arranged on the top surface of the end part. The welding teeth are of a quadrangular pyramid structure, the slope of the inclined surface of the welding teeth is between 76.5° and 79.6°, and the pitch between the welding teeth is between 0.95 and 1.1 mm. The utility model can firmly hold the welding material to prevent the material from moving during welding, and can stably transmit ultrasonic vibration energy during welding, improving the welding accuracy.

[0004] When the above-mentioned inclined-tooth welding head for ultrasonic welding is in use, the connecting parts of the welding teeth are usually fixed to the welding head by methods such as bolts or welding, which is rather troublesome to disassemble. It is not convenient for the staff to quickly replace the connecting parts of the welding teeth when welding different workpieces, increasing the workload of the staff and reducing the disassembly and assembly efficiency of the welding head. Content of the Utility Model

[0005] The purpose of the utility model is to provide an inclined-tooth welding head for ultrasonic welding, which can solve the problem that when the above-mentioned inclined-tooth welding head for ultrasonic welding is in use, the connecting parts of the welding teeth are usually fixed to the welding head by methods such as bolts or welding, which is rather troublesome to disassemble. It is not convenient for the staff to quickly replace the connecting parts of the welding teeth when welding different workpieces, increasing the workload of the staff and reducing the disassembly and assembly efficiency of the welding head.

[0006] To achieve the above object, the present utility model provides the following technical solution: An ultrasonic welding helical tooth welding head, comprising a circular block and a disassembly and assembly mechanism. The disassembly and assembly mechanism is arranged below the circular block. The disassembly and assembly mechanism includes a placement groove, a limiting groove, a positioning block, and a sliding cavity. A placement groove is opened at the bottom of the circular block. A set of limiting grooves are respectively opened on the inner walls on both sides of the placement groove. A positioning block is arranged inside the placement groove. The outer wall of the positioning block is closely attached to but not connected to the inner wall of the placement groove. Two sets of symmetrically arranged sliding cavities are opened inside the positioning block. The sliding cavities are communicated with the outside of the positioning block.

[0007] Preferably, the disassembly and assembly mechanism further includes a return spring, a movable block, and a plug-in block. The inner walls of the two sliding cavities are respectively slidably connected to the outer wall of a movable block. One end of the return spring is fixedly connected to the inner wall of one side of the sliding cavity. The other end of the return spring is fixedly connected to one side of the movable block. A plug-in block is fixedly installed on the other side of the movable block. One side of the plug-in block extends through the sliding cavity into the limiting groove. The welding tooth connecting piece can be removed by directly pulling it downward. During installation, the positioning block can be directly pushed into the placement groove. Disassembly and installation are both simple and easy to operate, facilitating the staff to quickly replace the welding tooth connecting piece when welding different workpieces, reducing the workload of the staff, improving the disassembly and assembly efficiency of the welding head, and increasing the flexibility and practicality of the device.

[0008] Preferably, smooth inclined surfaces corresponding to each other are provided on the inner wall of the limiting groove and one side of the plug-in block.

[0009] Preferably, a welding tooth connecting piece is fixedly installed at the bottom of the positioning block. The top of the welding tooth connecting piece is attached to the bottom of the circular block. A plurality of welding teeth are fixedly installed at the bottom of the welding tooth connecting piece.

[0010] Preferably, an auxiliary groove is opened on the outer wall of the circular block. The auxiliary groove is communicated with the lower part of the circular block.

[0011] Preferably, a connecting handle is fixedly installed at the top of the circular block. An internal thread groove is opened at the top of the connecting handle.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] For this ultrasonic welding helical tooth welding head, through the coordinated use of the placement groove, the limiting groove, the positioning block, the sliding cavity, the return spring, the return spring, and the movable block, the welding tooth connecting piece can be removed by directly pulling it downward. During installation, the positioning block can be directly pushed into the placement groove. Disassembly and installation are both simple and easy to operate, facilitating the staff to quickly replace the welding tooth connecting piece when welding different workpieces, reducing the workload of the staff, improving the disassembly and assembly efficiency of the welding head, and increasing the flexibility and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a bottom three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 3 is a three-dimensional structural schematic diagram of the circular block of the present utility model;

[0018] Figure 4 is a three-dimensional structural schematic diagram of the positioning block of the present utility model.

[0019] Reference numerals: 1, circular block; 2, connecting handle; 3, internal thread groove; 4, auxiliary groove; 5, disassembly and assembly mechanism; 501, placement groove; 502, limiting groove; 503, positioning block; 504, sliding cavity; 505, return spring; 506, movable block; 507, insertion block; 6, welding tooth connecting piece; 7, welding tooth. Specific embodiments

[0020] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The function of the accompanying drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it should not be construed as a limitation on the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution: an inclined-tooth welding head for ultrasonic welding, including a circular block 1 and a disassembly and assembly mechanism 5. The disassembly and assembly mechanism 5 is arranged below the circular block 1. The disassembly and assembly mechanism 5 includes a placement groove 501, a limiting groove 502, a positioning block 503 and a sliding cavity 504. A placement groove 501 is opened at the bottom of the circular block 1. A group of limiting grooves 502 are respectively opened on the inner walls on both sides of the placement groove 501. A positioning block 503 is arranged inside the placement groove 501. The outer wall of the positioning block 503 is in close contact with the inner wall of the placement groove 501 but not connected. Two groups of symmetrically arranged sliding cavities 504 are opened inside the positioning block 503. The sliding cavities 504 are communicated with the outside of the positioning block 503; a welding tooth connecting piece 6 is fixedly installed at the bottom of the positioning block 503. The top of the welding tooth connecting piece 6 is in contact with the bottom of the circular block 1. A plurality of welding teeth 7 are fixedly installed at the bottom of the welding tooth connecting piece 6; an auxiliary groove 4 is opened on the outer wall of the circular block 1. The auxiliary groove 4 is communicated with the lower part of the circular block 1; a connecting handle 2 is fixedly installed at the top of the circular block 1. An internal thread groove 3 is opened at the top of the connecting handle 2.

[0022] Secondly, the disassembly and assembly mechanism 5 further includes a return spring 505, a movable block 506 and a plug block 507. The inner walls of the two sliding cavities 504 are respectively slidably connected to the outer walls of a group of movable blocks 506. One end of the return spring 505 is fixedly connected to the inner wall of one side of the sliding cavity 504, and the other end of the return spring 505 is fixedly connected to one side of the movable block 506. A plug block 507 is fixedly installed on the other side of the movable block 506. One side of the plug block 507 extends through the sliding cavity 504 into the limiting groove 502. Corresponding smooth inclined surfaces are provided on the inner wall of the limiting groove 502 and one side of the plug block 507. The welding tooth connector 6 can be removed by directly pulling it downward. During installation, the positioning block 503 can be directly pushed into the placement groove 501. Both disassembly and installation are simple and easy to operate, facilitating the staff to quickly replace the welding tooth connector 6 when welding different workpieces, reducing the workload of the staff, improving the disassembly and assembly efficiency of the welding head, and increasing the flexibility and practicability of the device.

[0023] Working principle: During use, the connecting handle 2 is fixed on the ultrasonic welder through the internal thread groove 3 for use. When it is necessary to replace welding teeth 7 of different shapes, place the finger into the auxiliary groove 4 and slide downward to apply a downward force to the welding tooth connector 6, driving the positioning block 503 to move downward in the placement groove 501. During the downward movement of the positioning block 503, frictional sliding occurs between the inclined surfaces of the plug block 507 and the limiting groove 502, driving the movable block 506 to slide in the sliding cavity 504 and compress the return spring 505, causing the plug block 507 to move out of the limiting groove 502, canceling the limit on the positioning block 503, and then the welding tooth connector 6 can be removed. When it is necessary to install the welding tooth connector 6, directly insert the positioning block 503 into the placement groove 501. After complete insertion, under the elastic action of the return spring 505, the movable block 506 slides, thereby driving the plug block 507 to enter the limiting groove 502, limiting the positioning block 503, and completing the installation of the welding tooth connector 6.

[0024] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An inclined-tooth welding head for ultrasonic welding, characterized in that Including: A circular block (1); A disassembly and assembly mechanism (5), arranged below the circular block (1). The disassembly and assembly mechanism (5) includes a placement groove (501), a limiting groove (502), a positioning block (503) and a sliding cavity (504). A placement groove (501) is opened at the bottom of the circular block (1). A set of limiting grooves (502) are respectively opened on the inner walls of both sides of the placement groove (501). A positioning block (503) is arranged inside the placement groove (501). The outer wall of the positioning block (503) is closely attached to but not connected to the inner wall of the placement groove (501). Two sets of symmetrically arranged sliding cavities (504) are opened inside the positioning block (503). The sliding cavity (504) is communicated with the outside of the positioning block (503).

2. The helical welding head for ultrasonic welding according to claim 1, wherein: The disassembly and assembly mechanism (5) further includes a return spring (505), a movable block (506) and a plug-in block (507). The inner walls of the two sets of sliding cavities (504) are respectively slidably connected to the outer wall of a set of movable blocks (506). One end of the return spring (505) is fixedly connected to the inner wall of one side of the sliding cavity (504). The other end of the return spring (505) is fixedly connected to one side of the movable block (506). A plug-in block (507) is fixedly installed on the other side of the movable block (506). One side of the plug-in block (507) extends through the sliding cavity (504) into the limiting groove (502).

3. The helical welding head for ultrasonic welding according to claim 2, characterized in that: Corresponding smooth inclined surfaces are provided on the inner wall of the limiting groove (502) and one side of the plug-in block (507).

4. The helical welding head for ultrasonic welding according to claim 3, characterized in that: A welding tooth connector (6) is fixedly installed at the bottom of the positioning block (503). The top of the welding tooth connector (6) is in contact with the bottom of the circular block (1). A plurality of welding teeth (7) are fixedly installed at the bottom of the welding tooth connector (6).

5. The helical welding head for ultrasonic welding according to claim 4, wherein: An auxiliary groove (4) is opened on the outer wall of the circular block (1). The auxiliary groove (4) is communicated with the lower part of the circular block (1).

6. The helical welding head for ultrasonic welding according to claim 5, wherein: A connecting handle (2) is fixedly installed at the top of the circular block (1). An internal thread groove (3) is opened at the top of the connecting handle (2).

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