Multipurpose ultrasonic cut-off knife with modularized knife head combination
By combining modular cutter heads and using a quick-release mechanism, the problem of inconvenient disassembly of existing ultrasonic cutter heads has been solved, achieving multi-purpose cutting capabilities and improving the applicability and ease of operation of ultrasonic cutters.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SHAOWEI ULTRASOUND TECH CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-05-15
AI Technical Summary
The fixed blade head of existing ultrasonic cutters makes disassembly and replacement inconvenient, limiting their application range and making it impossible to efficiently cut different materials.
It adopts a modular cutter head assembly design, and the quick-release mechanism enables the rapid disassembly and replacement of the cutter head. The use of components such as elastic plates, limit rings, positioning holes, and magnets simplifies the cutter head replacement process.
It enables quick blade replacement, expands the application range of ultrasonic cutters, can cut a variety of materials, and improves work efficiency and ease of operation.
Smart Images

Figure CN224239807U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ultrasonic cutting technology, and in particular to a multi-purpose ultrasonic cutting tool with a modular cutting head assembly. Background Technology
[0002] An ultrasonic cutter is a tool that uses ultrasonic technology for cutting. It generates high-frequency ultrasonic vibrations, reducing friction on the blade when cutting materials, thus achieving a more precise and efficient cut. Ultrasonic cutters are commonly used to cut difficult-to-handle materials such as foam, rubber, plastics, and fabrics.
[0003] Typically, ultrasonic cutter heads are fixed, which can be quite cumbersome when disassembling and replacing different heads. This process is not only time-consuming and labor-intensive but can also affect work efficiency. This design limits the applicability of ultrasonic cutters, restricting them to cutting only specific materials, thus creating limitations in practical applications. Therefore, there is an urgent need for a multi-purpose ultrasonic cutter with modular head combinations to solve these problems. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a modular cutter head combination for a multi-purpose ultrasonic cutter.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A multi-purpose ultrasonic cutter with a modular cutter head assembly includes a transducer. One end of the transducer has a cutter body, and one end of the cutter body has a cutter head. One end of the cutter body has a quick-release mechanism for rapid disassembly and replacement of the cutter head. The quick-release mechanism includes an elastic sheet fixed to one end of the cutter body. The outer wall of the elastic sheet is threaded, and grooves are formed around its perimeter. One end of the cutter body has a positioning hole. A cutter holder is fixed to the end of the cutter head near the cutter body. A positioning pin is fixed to one end of the cutter holder, and the positioning pin is adapted to the positioning hole. A limiting ring is provided on the outer wall of the threaded part, and a tapered thread groove is formed on the inner wall of the limiting ring, adapting to the threaded part. The positioning pin is inserted into the positioning hole, and then the limiting ring is rotated to compress the elastic sheet and lock the outer wall of the cutter holder.
[0007] Preferably, a magnet is installed at one end of the inner wall of the positioning hole.
[0008] Preferably, a metal part is welded to one end of the positioning post near the main body of the cutting tool, and the metal part is attracted to a magnet.
[0009] Preferably, a handle is fixed to the outer wall of the cutter body near the blade holder.
[0010] Preferably, one end of the transducer has a first threaded groove.
[0011] Preferably, the screw is adapted inside the first threaded groove, and one end of the screw is fixedly connected to one end of the cutter body.
[0012] The beneficial effects of this utility model are as follows:
[0013] 1. Thanks to the quick-release mechanism, the limiting ring can be rotated away from the elastic plate, allowing for rapid disassembly of the cutter head. The positioning pin at one end of the new cutter head is inserted into the positioning hole, and the metal part is attracted by a magnet, thus pre-fixing the cutter head. Then, the limiting ring is rotated, and the elastic plate is pressed through the tapered thread groove, locking the outer wall of the cutter holder. This achieves quick disassembly and replacement of the cutter head, facilitating the user's ability to change different cutters for cutting different materials. It reduces the limitations of ultrasonic cutter use, is simple to operate, and allows more users to easily master it. Attached Figure Description
[0014] Figure 1 This is a three-dimensional exploded view of a multi-purpose ultrasonic cutter with a modular cutter head assembly proposed in this utility model.
[0015] Figure 2 This is a side cross-sectional view of a multi-purpose ultrasonic cutter with a modular cutter head assembly proposed in this utility model.
[0016] Figure 3 This is a partially exploded structural diagram of the quick-release mechanism of a modular cutter head combination multi-purpose ultrasonic cutter proposed in this utility model.
[0017] In the diagram: 1. Transducer; 101. First threaded groove; 2. Cutting blade body; 201. Thread; 202. Handle; 203. Screw; 204. Positioning hole; 205. Magnet; 206. Elastic sheet; 207. Groove; 3. Blade holder; 301. Limiting ring; 302. Tapered threaded groove; 303. Blade head; 304. Positioning pin; 305. Metal part. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0019] Reference Figure 1-3A multi-purpose ultrasonic cutter with modular cutter head assembly includes a transducer 1, a cutter body 2 at one end of the transducer 1, a cutter head 303 at one end of the cutter body 2, and a quick-release mechanism for quick disassembly and replacement of the cutter head 303 at one end of the cutter body 2.
[0020] The quick-release mechanism includes an elastic sheet 206 fixed to one end of the cutter body 2. The outer wall of the elastic sheet 206 has a thread 201 and a groove 207 around its perimeter. One end of the cutter body 2 has a positioning hole 204. The end of the cutter head 303 near the cutter body 2 is fixed with a cutter holder 3. One end of the cutter holder 3 is fixed with a positioning pin 304, which is adapted to the positioning hole 204. The outer wall of the thread 201 has a limiting ring 301, and the inner wall of the limiting ring 301 has a tapered thread groove 302, which is adapted to the thread 201. The positioning pin 304 is inserted into the positioning hole 204. Then, by rotating the limiting ring 301, the elastic sheet 206 can be squeezed and the outer wall of the cutter holder 3 can be locked.
[0021] In this utility model, a magnet 205 is installed on one end of the inner wall of the positioning hole 204.
[0022] In this utility model, a metal part 305 is welded to one end of the positioning post 304 near the cutter body 2, and the metal part 305 is attracted to the magnet 205.
[0023] In this utility model, a handle 202 is fixed to the outer wall of the cutter body 2 near the cutter holder 3.
[0024] In this utility model, a first threaded groove 101 is provided at one end of the transducer 1.
[0025] In this utility model, a screw 203 is adapted inside the first threaded groove 101, and one end of the screw 203 is fixedly connected to one end of the cutter body 2.
[0026] Working principle: In use, first align the screw 203 with the first threaded groove 101, then rotate the cutter body 2. The cutter body 2 will drive the screw 203 into the first threaded groove 101, and fix the cutter body 2 in place. When the cutter head 303 needs to be replaced, rotate the limiting ring 301 and move the limiting ring 301 away from the elastic plate 206. Since the elastic plate 206 has a certain elasticity, when the limiting ring 301 moves away from the elastic plate 206, the elastic plate 206 will move away from the outer wall of the cutter holder 3 and loosen the locking of the cutter holder 3. Then, the cutter holder 3 can be pulled out. Then, align the positioning post 304 at one end of the new cutter head 303 with one end of the positioning hole 204 and insert it into the positioning hole 204. Then, the magnet 205 will attract the metal part 305. The positioning hole 204 and the magnet 205 will then be locked together. First, the cutter holder 3 is positioned, located inside the elastic plate 206 and at its center. Then, the limiting ring 301 is fitted with the thread 201, and the limiting ring 301 is rotated. The tapered thread groove 302 inside the limiting ring 301 is tapered. When the limiting ring 301 is fitted with the outer wall of the thread 201, it gradually compresses the elastic plate 206. The elastic plate 206 is compressed and gradually contracts towards the center, then approaches the outer wall of the cutter holder 3. When the limiting ring 301 rotates to a certain extent, the elastic plate 206 locks the cutter holder 3, thus achieving the effect of quick replacement of the cutter head 303. This allows users to easily change different cutter heads 303 for cutting different materials, facilitating the use of ultrasonic cutters and reducing limitations in their application.
[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A multi-purpose ultrasonic cutter with a modular cutter head assembly, comprising a transducer (1), characterized in that, The transducer (1) is provided with a cutter body (2) at one end, and a cutter head (303) is provided at one end of the cutter body (2). A quick-release mechanism for quickly disassembling and replacing the cutter head (303) is provided at one end of the cutter body (2). The quick-release mechanism includes an elastic sheet (206) fixed to one end of the cutter body (2). The outer wall of the elastic sheet (206) is provided with a thread (201), and the outer wall of the elastic sheet (206) is provided with a groove (207) around its perimeter. One end of the cutter body (2) is provided with a positioning hole (204). The end of the cutter head (303) near the cutter body (2) is fixed with a cutter holder (3). One end of the cutter holder (3) is fixed with a positioning pin (304), and the positioning pin (304) is adapted to the positioning hole (204). The outer wall of the thread (201) is provided with a limiting ring (301), and the inner wall of the limiting ring (301) is provided with a tapered thread groove (302), and the tapered thread groove (302) is adapted to the thread (201).
2. The multi-purpose ultrasonic cutter with modular cutter head assembly according to claim 1, characterized in that, A magnet (205) is installed on one end of the inner wall of the positioning hole (204).
3. The multi-purpose ultrasonic cutter with modular cutter head assembly according to claim 2, characterized in that, The positioning post (304) has a metal part (305) welded to one end near the cutter body (2), and the metal part (305) is attracted to the magnet (205).
4. The multi-purpose ultrasonic cutter with modular cutter head assembly according to claim 1, characterized in that, A handle (202) is fixed to the outer wall of the cutter body (2) near the cutter holder (3).
5. The multi-purpose ultrasonic cutter with modular cutter head assembly according to claim 1, characterized in that, One end of the transducer (1) is provided with a first threaded groove (101).
6. The multi-purpose ultrasonic cutter with modular cutter head assembly according to claim 5, characterized in that, The first threaded groove (101) is fitted with a screw (203), one end of which is fixedly connected to one end of the cutter body (2).