A handheld ultrasonic cutting device

Abstract

The application discloses a handheld ultrasonic cutting device and belongs to the technical field of cutting equipment. The handheld ultrasonic cutting device comprises a cutter body, an annular protrusion is arranged on the outer periphery of the cutter body at the position of the minimum axial vibration value, two interference fit flange rings are arranged on the outer periphery of the annular protrusion, and the flange rings are in clearance fit with the annular protrusion; a transducer is connected with the cutter body, the transducer is used for converting electric energy into mechanical vibration, and the mechanical vibration is transmitted to the cutter body so that the cutter body can cut; a sleeve is arranged on the outer side of the cutter body and the transducer, the shape of the sleeve matches the shape of the whole after the cutter body and the transducer are connected, one end of the sleeve is fixed on the end of the transducer which is not connected with the cutter body, and the other end of the sleeve is clamped on the outer periphery of the flange ring. The beneficial effect is that the cutter body can be prevented from swinging during cutting, and the cutting effect is better.

Description

Technical Field

[0001] This invention relates to the field of cutting equipment technology, and more particularly to a handheld ultrasonic cutting device. Background Technology

[0002] Currently, ultrasonic cutting devices used for cutting car dashboards generally employ robotic grippers. Because robotic grippers can precisely control the cutting speed and cutting force, they can complete the cutting action with high efficiency. In order to achieve better cutting results, it is also necessary to use a handheld ultrasonic cutting device to trim or recut the parts of the workpiece that were not cut by the robotic gripper due to the limitations of the cutting position.

[0003] Because the entire handheld ultrasonic cutting device is vibrating during the cutting process, and the distance between the cutting edge of the handheld ultrasonic cutting device used for trimming or recutting the workpiece and the support point supporting the handheld ultrasonic cutting device is relatively far, the cutting edge is prone to swinging during cutting, resulting in poor cutting effect; and because the distance between the cutting edge and the support point supporting the handheld ultrasonic cutting device is relatively far, it is difficult to control the cutting force of the cutting edge.

[0004] To address the above problems, there is an urgent need for a handheld ultrasonic cutting device. Summary of the Invention

[0005] The purpose of this invention is to provide a handheld ultrasonic cutting device that can prevent the blade from wobbling during cutting, resulting in better cutting effect and control over the cutting force of the blade.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A handheld ultrasonic cutting device, comprising:

[0008] The cutter body has an annular protrusion on its outer periphery at the position where the axial vibration is at its minimum. Two interference-fit flange rings are fitted around the outer periphery of the annular protrusion, and the flange rings are clearance-fitted with the annular protrusion.

[0009] A transducer, which is connected to the blade body, is used to convert electrical energy into mechanical vibrations to be transmitted to the blade body so that the blade body can cut.

[0010] A sleeve is fitted over the outside of the blade body and the transducer. The shape of the sleeve matches the overall shape of the blade body and the transducer after they are connected. One end of the sleeve is fixed to the end of the transducer that is not connected to the blade body, and the other end of the sleeve is clamped around the outer periphery of the flange ring.

[0011] Preferably, the annular protrusion and the blade body are integrally formed.

[0012] Preferably, the location of the minimum axial vibration on the cutter body is obtained through finite element analysis.

[0013] Preferably, a protective sleeve is provided at one end of the sleeve near the cutting edge of the blade body, the blade body can pass through the protective sleeve, and the protective sleeve can move or slide relative to the sleeve along the length direction of the blade body to control the amount of the blade body extending out of the protective sleeve.

[0014] Preferably, the outer periphery of the sleeve is provided with an external thread, and the inner wall of the protective sleeve is provided with an internal thread that matches the external thread. The protective sleeve is threadedly connected to the sleeve so that the protective sleeve can move relative to the sleeve along the length direction of the blade body.

[0015] Preferably, a slider is provided on one of the outer periphery of the sleeve and the inner wall of the protective sleeve, and a slide rail matching the slider is provided on the other. The slider can slide on the slide rail so that the protective sleeve can slide relative to the sleeve along the length direction of the blade body.

[0016] Preferably, the sleeve is made of plastic.

[0017] Preferably, the sleeve is also provided with a handle to facilitate picking up and holding the handheld ultrasonic cutting device.

[0018] Preferably, the number of handles is set to two.

[0019] Preferably, the blade body and the transducer are connected by fasteners.

[0020] The beneficial effects of this invention are as follows:

[0021] By connecting the transducer to the blade body, the transducer converts electrical energy into mechanical vibration and transmits it to the blade body for cutting. Simultaneously, an annular protrusion is provided on the outer periphery of the blade body at the location of minimum axial vibration, and two interference-fit flange rings are fitted around the outer periphery of the annular protrusion. A sleeve is fitted around the outside of the blade body and transducer, its shape matching the overall shape of the connected blade body and transducer. One end of the sleeve is fixed to the end of the transducer not connected to the blade body, and the other end is clamped around the outer periphery of the flange rings to increase the clamping point on the blade body. This shortens the cutting force arm between the blade edge and the transducer, reducing it to the distance between the blade edge and the annular protrusion. This prevents blade edge wobbling during cutting, resulting in better cutting performance. Furthermore, the two interference-fit flange rings absorb the vibration from the annular protrusion. The generated energy further prevents the blade from wobbling during cutting, resulting in better cutting performance. The significantly shortened cutting lever arm allows for better control of the cutting force. Furthermore, placing the annular protrusion at the point of minimum axial vibration on the blade body minimizes vibration energy loss during cutting, enabling the blade to vibrate effectively to cut the workpiece. Simultaneously, the clearance fit between the flange ring and the annular protrusion provides space for movement, preventing overly tight installation that could cause relative sliding between them due to vibration, leading to heat loss and reduced vibration energy. This reduces the blade's heat loss. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the handheld ultrasonic cutting device provided by the present invention;

[0023] Figure 2 This is a cross-sectional view of the blade provided by the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Cutter body; 11-Annular protrusion; 12-Flange ring; 13-Cutter edge; 2-Transducer; 3-Sleeve; 4-Sleeve back cover; 5-Handle; 6-Protective sleeve. Detailed Implementation

[0026] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0027] Any feature disclosed in this specification, unless specifically stated otherwise, may be replaced by other equivalent or similar features. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features. Throughout this specification, the same reference numerals indicate the same elements.

[0028] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] In this embodiment, as Figure 1 and Figure 2 As shown, a handheld ultrasonic cutting device is proposed, which can shorten the cutting lever arm by increasing the clamping points, thereby improving the cutting effect. Specifically, the handheld ultrasonic cutting device includes a blade body 1, a transducer 2, and a sleeve 3. An annular protrusion 11 is provided on the outer periphery of the blade body 1 at the position of minimum axial vibration. Two interference-fit flange rings 12 are fitted around the annular protrusion 11, with a clearance fit between the flange rings 12 and the annular protrusion 11. The transducer 2 is connected to the blade body 1 and is used to convert electrical energy into mechanical vibration to be transmitted to the blade body 1, so that the blade body 1 can cut the workpiece. The sleeve 3 is fitted around the outside of the blade body 1 and the transducer 2. The shape of the sleeve 3 matches the overall shape of the blade body 1 and the transducer 2 after connection. One end of the sleeve 3 is fixed to the end of the transducer 2 that is not connected to the blade body 1, and the other end of the sleeve 3 is clamped around the outer periphery of the flange rings 12. In this embodiment, transducer 2 is a common transducer in the prior art; therefore, its specific structure and working principle will not be described in detail here. In this embodiment, the workpiece to be cut is rubber. In other embodiments, the workpiece to be cut can also be plastic or other materials.

[0030] In this embodiment, the annular protrusion 11 and the blade body 1 are integrally formed, which allows for simple processing and eliminates relative movement between the annular protrusion 11 and the blade body 1, ensuring that their vibration frequencies are the same and thus not affecting the ultrasonic vibration and cutting motion of the blade body 1 itself. In other embodiments, the annular protrusion 11 and the blade body 1 can be separate structures, fixed by welding.

[0031] By connecting transducer 2 to cutter body 1, transducer 2 converts electrical energy into mechanical vibration and transmits it to cutter body 1, facilitating cutting. Simultaneously, an annular protrusion 11 is provided on the outer periphery of the cutter body 1 at the position of minimum axial vibration, and two interference-fit flange rings 12 are fitted around the annular protrusion 11. A sleeve 3 is fitted around the outside of cutter body 1 and transducer 2, the shape of which matches the overall shape of the cutter body 1 and transducer 2 after connection. One end of the sleeve 3 is fixed to the end of transducer 2 not connected to cutter body 1, and the other end of the sleeve 3 is clamped to the flange ring 12. The outer periphery is reinforced with clamping points on the blade body 1, thereby shortening the cutting force arm between the blade edge 13 and the transducer 2. This shortens the cutting force arm to the distance between the blade edge 13 and the annular protrusion 11, preventing the blade edge 13 from wobbling during cutting and resulting in better cutting performance. Furthermore, the inclusion of two interference-fit flange rings 12 absorbs the energy generated by the vibration of the annular protrusion 11, further preventing blade edge 13 from wobbling during cutting and improving the cutting effect. The significantly shortened cutting force arm allows for better control of the cutting force of the blade edge 13. The blade body 1 and the transducer 2 are connected by fasteners. In this embodiment, the fasteners are bolts. One end of the sleeve 3 is fixed to the end of the transducer 2 that is not connected to the blade body 1 by a sleeve cover 4.

[0032] By placing the annular protrusion 11 at the position of minimum axial vibration on the cutter body 1, the vibration energy loss of the cutter body 1 during the cutting process can be minimized due to the annular protrusion 11, allowing the cutter body 1 to vibrate effectively to cut the workpiece. Simultaneously, the clearance fit between the flange ring 12 and the annular protrusion 11 provides room for movement, preventing the flange ring 12 and the annular protrusion 11 from being installed too tightly. This avoids the problem of relative sliding between the flange ring 12 and the annular protrusion 11 during cutting due to vibration, which would generate heat and lose the vibration energy of the cutter body 1, thus reducing the heat loss of the cutter body 1. Since there is no ultrasonic vibration between the two flange rings 12, an interference fit can be used to ensure that the two flange rings 12 remain fixed. The position of minimum axial vibration on the cutter body 1 was obtained through finite element analysis. In this embodiment, obtaining the position of the minimum axial vibration on the cutter body 1 through finite element software analysis is a common analysis method in the prior art. Therefore, the analysis process and specific analysis results will not be described in detail here.

[0033] Furthermore, such as Figure 1As shown, a protective sleeve 6 is provided on one end of the sleeve 3 near the cutting edge 13 of the blade body 1. The blade body 1 can pass through the protective sleeve 6, and the protective sleeve 6 can move or slide relative to the sleeve 3 along the length direction of the blade body 1 to control the amount of the blade body 1 extending out of the protective sleeve 6. The protective sleeve 6 has an opening through which the blade body 1 can pass, allowing it to extend relative to the sleeve 3. The shape and size of the opening match the shape and size of the blade body 1, ensuring that the blade body 1 does not interfere with the opening when it passes through, thus allowing the cutting edge 13 on the blade body 1 to cut effectively.

[0034] By providing a protective sleeve 6 at one end of the sleeve 3 near the cutting edge 13 of the blade body 1, and by allowing the protective sleeve 6 to move or slide relative to the sleeve 3 along the length of the blade body 1, the amount by which the blade body 1 extends beyond the protective sleeve 6 relative to the sleeve 3 can be controlled, thus preventing the entire cutting edge 13 from being exposed and greatly ensuring the safety of use.

[0035] In this embodiment, an external thread (not shown in the figure) is provided on the outer periphery of the sleeve 3, and an internal thread matching the external thread is provided on the inner wall of the protective sleeve 6. The protective sleeve 6 is threadedly connected to the sleeve 3. By adjusting the degree of the threaded connection, the protective sleeve 6 can move relative to the sleeve 3 along the length direction of the cutter body 1, thereby controlling the amount of the cutter body 1 extending out of the protective sleeve 6.

[0036] In other embodiments, a slider may be provided on one of the outer periphery of the sleeve 3 and the inner wall of the protective sleeve 6, and a slide rail matching the slider may be provided on the other. The slider can slide on the slide rail, so that the protective sleeve 6 can slide relative to the sleeve 3 along the length direction of the blade body 1, thereby controlling the amount by which the blade body 1 extends beyond the protective sleeve 6. In other embodiments, the sleeve 3 and the protective sleeve 6 may be connected in other ways, as long as the amount by which the blade body 1 extends beyond the protective sleeve 6 can be controlled.

[0037] Furthermore, such as Figure 1 As shown, a handle 5 is also provided on the sleeve 3 to facilitate picking up and holding the handheld ultrasonic cutting device, making cutting more convenient. In this embodiment, there are two handles 5 so that both hands can pick up and hold the entire handheld ultrasonic cutting device through the handles 5, further increasing the convenience of the cutting operation.

[0038] In this embodiment, the sleeve 3, handle 5, and protective sleeve 6 are all made of plastic. By using plastic as the material for all of them, the weight of the entire handheld ultrasonic cutting device can be greatly reduced, making it easier to hold and cut.

[0039] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A handheld ultrasonic cutting device, characterized in that, include: The cutter body (1) has an annular protrusion (11) on its outer periphery at the position of minimum axial vibration. Two interference fit flange rings (12) are fitted around the outer periphery of the annular protrusion (11), and the flange rings (12) are clearance fit with the annular protrusion (11). A transducer (2) is connected to the blade body (1). The transducer (2) is used to convert electrical energy into mechanical vibration, which is transmitted to the blade body (1) so that the blade body (1) can cut. A sleeve (3) is fitted on the outside of the blade body (1) and the transducer (2). The shape of the sleeve (3) matches the overall shape of the blade body (1) and the transducer (2) after they are connected. One end of the sleeve (3) is fixed to the end of the transducer (2) that is not connected to the blade body (1). The other end of the sleeve (3) is clamped on the outer periphery of the flange ring (12) to increase the clamping point on the blade body (1). This shortens the cutting arm between the blade edge (13) on the blade body (1) and the transducer (2), so that the cutting arm is shortened to the distance between the blade edge (13) and the annular protrusion (11). The annular protrusion (11) and the blade body (1) are integrally formed; The position of the minimum axial vibration on the cutter body (1) was obtained by finite element analysis. The blade body (1) and the transducer (2) are connected by fasteners.

2. The handheld ultrasonic cutting device as described in claim 1, characterized in that, A protective sleeve (6) is provided at one end of the sleeve (3) near the blade (13) of the blade body (1). The blade body (1) can pass through the protective sleeve (6), and the protective sleeve (6) can move or slide relative to the sleeve (3) along the length direction of the blade body (1) to control the amount by which the blade body (1) extends out of the protective sleeve (6).

3. The handheld ultrasonic cutting device as described in claim 2, characterized in that, The outer periphery of the sleeve (3) is provided with an external thread, and the inner wall of the protective sleeve (6) is provided with an internal thread that matches the external thread. The protective sleeve (6) is threaded to the sleeve (3) so that the protective sleeve (6) can move relative to the sleeve (3) along the length direction of the blade body (1).

4. The handheld ultrasonic cutting device as described in claim 2, characterized in that, A slider is provided on one of the outer periphery of the sleeve (3) and the inner wall of the protective sleeve (6), and a slide rail matching the slider is provided on the other. The slider can slide on the slide rail so that the protective sleeve (6) can slide relative to the sleeve (3) along the length direction of the blade body (1).

5. The handheld ultrasonic cutting device as described in claim 1, characterized in that, The sleeve (3) is made of plastic.

6. The handheld ultrasonic cutting device as described in claim 1, characterized in that, The sleeve (3) is also provided with a handle (5) to facilitate picking up and holding the handheld ultrasonic cutting device.

7. The handheld ultrasonic cutting device as described in claim 6, characterized in that, The number of handles (5) is set to two.

Images