Ultrasonic cutting device and machine tool

Abstract

The utility model belongs to the technical field of cutting equipment, and particularly discloses an ultrasonic cutting device and a machine tool. The ultrasonic cutting device comprises a shell, a sleeve, a cutting mechanism and a driving mechanism; the cutting mechanism comprises a transducer, an amplitude-change pole and a blade; the driving mechanism comprises a first transmission assembly and a power assembly; the power assembly drives the cutting mechanism to reciprocate in the first direction through the first transmission assembly. The shell is provided with a cooling air channel, and the amplitude-change pole is provided with an air passing through hole communicated with the cooling air channel. The sleeve is further provided with an air passing hole communicated with the air passing gap. The cutting mechanism is provided with a transducer and an amplitude-change pole, so that a blade reciprocates in a first direction, and ultrasonic high-frequency axial vibration is increased, so that the cutting speed and the cutting capacity of the cutting mechanism are improved; and moreover, cooling gas entering the cooling gas channel can take away heat generated among the first transmission assembly, the energy converter, the amplitude-change pole and the sleeve, the temperature of the movement mechanism is reduced, and the service life of the movement mechanism of the cutting device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting equipment, in particular to an ultrasonic cutting device and a machine tool. Background Art

[0002] Currently, flexible sheet products (such as wovens, non-woven fabrics, paper, leather, synthetic materials, composite materials, etc.) require a large amount of cutting during the production process. Cutting machines are usually used to cut sheet products into specified shapes. The cutting blade is a slender blade with a sharp cutting edge. The cutting edge advances through the sheet along the specified cutting line while the blade reciprocates in a direction roughly perpendicular to the material.

[0003] Traditional cutting machines use a motor to convert rotational motion into reciprocating motion to cut materials. However, the passive motion mechanism of traditional cutting machines is a purely mechanical structure, using an eccentric wheel to achieve low-frequency reciprocating up and down movement of the blade. This type of cutting machine has a low upper limit on cutting capacity, and it is difficult to increase the cutting speed and cutting frequency. In addition, the blade is driven to reciprocate for a long time by the motion mechanism, which causes a lot of friction between the motion mechanism and the machine tool housing. The process of the transducer converting electrical energy into mechanical energy also generates a lot of heat, causing the entire motion mechanism to heat up, accelerating the wear of the motion mechanism parts, and shortening the motion mechanism lifespan. Utility Model Content

[0004] The purpose of the utility model is to provide an ultrasonic cutting device and a machine tool to solve the technical problems of the existing cutting machine in that the cutting upper limit is low, the cutting speed is not high enough, and the moving mechanism is easily worn due to the high temperature of the moving mechanism.

[0005] To achieve the above-mentioned object, the first aspect of the present invention provides an ultrasonic cutting device, comprising: a housing, a sleeve, a cutting mechanism, and a driving mechanism; the sleeve is rotatably connected to the housing; the driving mechanism is used to drive the cutting mechanism to reciprocate along a first direction; the cutting mechanism comprises a transducer, a horn, and a blade connected in sequence along the first direction; the sleeve is sleeved on the outside of the horn; the driving mechanism comprises a first transmission assembly and a power assembly; the first transmission assembly is connected to the cutting mechanism; the power assembly is connected to the first transmission assembly; the power assembly drives the cutting mechanism to reciprocate along the first direction through the first transmission assembly;

[0006] The shell is provided with a cooling air duct, the transducer and the first transmission assembly are located in the cooling air duct, and the end of the amplitude transformer facing the transducer is provided with an air through hole connected to the cooling air duct, an air gap is provided between the middle inner wall of the sleeve and the middle outer wall of the amplitude transformer, and the air through hole is connected to the air gap; the sleeve is also provided with an air hole passing through the side wall of the sleeve; the air hole is connected to the air gap.

[0007] Preferably, the sleeve includes a machine tool connecting section for connecting to a machine tool; the machine tool connecting section is located outside the outer shell, and the outer side surface of the machine tool connecting section is provided with an air groove connected to the air hole, and the air groove extends toward the direction of the blade to the end face of the machine tool connecting section.

[0008] Preferably, a plurality of convex steps are provided on the outer side of the machine tool connecting section, and the plurality of convex steps are arranged in sequence along the first direction and the closer to the blade, the smaller the outer diameter of the convex step; each of the convex steps is provided with an air groove; wherein the air groove farthest from the outer shell is the end air groove, and the end air groove extends to the end face of the machine tool connecting section away from the outer shell; the air groove located in the middle of the machine tool connecting section is provided with the air hole, and each of the air grooves extends to the front end face of the corresponding convex step.

[0009] Preferably, each of the air passage grooves extends forward to the side surface of the adjacent outwardly protruding step.

[0010] Preferably, each section of the outwardly convex step is provided with an outwardly convex matching portion, the air holes are provided on the matching portion, and the end air grooves pass through the matching portion forward.

[0011] Preferably, the plurality of air holes and the plurality of air grooves are evenly distributed along the circumference of the sleeve.

[0012] Preferably, the air passages of two adjacent sections of the outwardly convex steps are correspondingly arranged along the first direction.

[0013] Preferably, a connecting piece is further included; a connecting hole is provided on the outer side of the machine tool connecting section, the connecting piece extends into the connecting hole, and the connecting piece is used to connect the sleeve and the assembly kit of the machine tool.

[0014] Preferably, the connecting hole is provided in the air passage groove.

[0015] Preferably, the connecting holes are evenly distributed along the circumference of the sleeve.

[0016] The second aspect of the present application also provides a machine tool, including a driving device, an assembly kit connected to the driving device, and an ultrasonic cutting device provided in an embodiment of the present application. A screw mounting hole is provided on the outer side of the sleeve, and the sleeve is connected to the assembly kit by a screw extending into the screw mounting hole. The driving device is used to drive the ultrasonic cutting device to move.

[0017] The ultrasonic cutting device and machine tool provided by the utility model have the following beneficial effects: the cutting mechanism is provided with a transducer and a variable amplitude rod, so that the blade increases the ultrasonic high-frequency axial vibration while moving back and forth in the first direction, thereby improving the cutting speed and cutting ability of the cutting mechanism, so that the cutting mechanism can more efficiently cut thicker leather, non-woven fabrics and other soft sheets, significantly expanding the cutting range of the cutting machine; and the cooling gas can flow through the first transmission component and the transducer, and enter the air gap through the air through hole, and finally the cooling gas is discharged from the air through hole, so that the cooling gas can take away the heat generated between the first transmission component, the transducer, the variable amplitude rod, and the sleeve, thereby reducing the temperature of the moving mechanism, reducing thermal wear, and extending the service life of the moving mechanism of the cutting device.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an ultrasonic cutting device according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of the ultrasonic cutting device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the power assembly, the first transmission assembly, and the cutting mechanism after assembly according to an embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of a sleeve according to an embodiment of the present utility model.

[0023] In the figure, 100, housing; 160, cooling air duct; 200, sleeve; 210, air gap; 280, machine tool connecting section; 281, protruding step; 282, air groove; 283, air hole; 284, connecting hole; 285, connecting piece; 286, mating part; 300, cutting mechanism; 310, transducer; 320, amplitude rod; 330, blade; 370, air hole; 500, driving mechanism; 510, first transmission assembly; 511, first bearing sleeve; 512, first transmission rod; 530, power assembly; 532, first eccentric wheel; 800, assembly kit; 900, fan. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Please also refer to Figures 1 to 4 Now, the ultrasonic cutting device provided in the embodiment of the present invention is described.

[0029] The ultrasonic cutting device includes a first direction X; the first direction X is the axial direction of the ultrasonic cutting device movement, such as Figure 1 、 Figure 2 As shown;

[0030] Reference Figures 1 to 4An ultrasonic cutting device according to an embodiment of the present invention includes: a housing 100, a sleeve 200, a cutting mechanism 300, and a driving mechanism 500; the sleeve 200 is rotatably connected to the housing 100; the driving mechanism 500 is used to drive the cutting mechanism 300 to reciprocate along a first direction; the cutting mechanism 300 includes a transducer 310, an amplitude rod 320, and a blade 330 connected in sequence along the first direction; the sleeve 200 is sleeved on the outside of the amplitude rod 320; the driving mechanism 500 includes a first transmission assembly 510 and a power assembly 530; the first transmission assembly 510 is connected to the cutting mechanism 300; the power assembly 530 is connected to the first transmission assembly 510; the power assembly 530 drives the cutting mechanism 300 to reciprocate along the first direction through the first transmission assembly 510;

[0031] Reference Figures 2 to 4 The housing 100 is provided with a cooling air duct 160, the transducer 310 and the first transmission assembly 510 are located in the cooling air duct 160, and an air through hole 370 is provided at one end of the amplitude transformer 320 facing the transducer 310. An air gap 210 is provided between the inner wall of the middle section of the sleeve 200 and the outer wall of the middle section of the amplitude transformer 320, and the air through hole 370 is connected to the air gap 210; the sleeve 200 is also provided with an air hole 283 that passes through the side wall of the sleeve 200, and the air hole 283 is connected to the air gap 210, that is, one end of the air hole 283 is connected to the outer wall of the sleeve 200, and the other end of the air hole 283 is connected to the inner wall of the sleeve 200, and the wind in the air gap 210 can be transported to the outside of the sleeve 200 through the air hole 283 on the sleeve 200.

[0032] Reference Figures 2 to 4 The cutting mechanism 300 has a transducer 310 and a horn 320. The transducer 310 is an ultrasonic transducer 310, that is, the transducer 310 and the horn 320 are used to generate ultrasonic high-frequency axial vibration for the entire cutting mechanism 300, so that the blade 330 increases the ultrasonic high-frequency axial vibration while moving back and forth in the first direction, thereby improving the cutting speed and cutting ability of the cutting mechanism 300, so that the cutting mechanism 300 can more efficiently cut thicker leather, non-woven fabrics and other soft sheets, significantly expanding the cutting range of the cutting machine.

[0033] The cooling air duct 160 is used to introduce cooling gas. The cooling gas can be obtained through the fan 900, or can be connected to the cooling gas delivery pipe through a pipeline to ensure that the cooling air duct can introduce cooling gas.

[0034] After the cooling gas enters the cooling air duct 160, it can flow through the first transmission component 510 and the transducer 310, and enter the air gap 210 through the air through hole 370, and finally be cooled and discharged from the air through hole 283. The cooling gas can take away the heat generated between the first transmission component 510, the transducer 310, the amplitude rod 320, and the sleeve 200, so as to reduce the temperature of the first transmission component 510, the transducer 310, the amplitude rod 320, and the sleeve 200, reduce the temperature of the moving mechanism, reduce thermal wear, and extend the service life of the moving mechanism of the cutting device.

[0035] It should be noted that the power assembly 530 can be a drive motor or a pneumatic drive source. Taking the drive motor as an example, the first transmission assembly 510 and the cutting mechanism 300 are combined into a crank rocker mechanism; the drive motor provides power to drive the crank of the crank rocker mechanism to rotate, driving the cutting mechanism 300 to reciprocate in the first direction. Optimally, refer to Figure 3 The driving shaft of the driving motor may be provided with a first eccentric wheel 532, and the first transmission assembly 510 includes a first bearing sleeve 511 and a first transmission rod 512, wherein the first bearing sleeve 511 is sleeved on the outside of the first eccentric wheel 532, one end of the first transmission rod 512 is rotatably connected to the first bearing sleeve 511, and the other end of the first transmission rod 512 is connected to the cutting mechanism 300, so that when the driving motor rotates, it can drive the cutting mechanism 300 to reciprocate in the first direction.

[0036] In some embodiments of the present invention, referring to Figures 2 to 4 Sleeve 200 includes a machine tool connecting section 280 for connecting to a machine tool. This section is located outside of the housing 100 and has an air vent 282 on its outer side, which communicates with an air vent 283. The machine tool connecting section 280 extends outside of the housing 100 and is used to connect to the machine tool assembly kit 800. The assembly kit 800 fits over the outer side of the machine tool connecting section 280. The air vent 282 extends to the end face of the machine tool connecting section 280, toward the blade 330. Therefore, the assembly kit 800 covers both the air vent 282 and the air vent 283. The inner side of assembly kit 800 mates with the outer side of sleeve 200. Therefore, by providing air passage groove 282, a space is created between assembly kit 800 and sleeve 200 for cooling gas to flow in. Cooling gas can be delivered between assembly kit 800 and sleeve 200 through air passage holes 283 and air passage groove 282, thereby cooling both assembly kit 800 and sleeve 200. Furthermore, air passage groove 282 extends toward blade 330 to the end face of machine tool connecting section 280, allowing cooling gas to be discharged from the end face of machine tool connecting section 280, ensuring proper cooling gas discharge.

[0037] In some embodiments of the present invention, referring to Figures 2 to 4The assembly kit 800 may be provided with multiple levels of matching steps. The machine tool connecting section 280 is located outside the housing 100. Then, the corresponding outer side of the machine tool connecting section 280 is provided with multiple sections of protruding steps 281. The multiple sections of protruding steps 281 correspond to the multiple levels of matching steps of the assembly sleeve 200, so that the machine tool connecting section 280 can better match the assembly kit 800 of the machine tool.

[0038] Among them, multiple sections of convex steps 281 are arranged in sequence along the first direction and the outer diameter of the convex step 281 closer to the blade 330 is smaller, wherein the blade 330 is located in front of the convex step 281; each section of the convex step 281 is provided with an air groove 282; wherein, the air groove 282 farthest from the outer shell 100 is the end air groove 282, and the end air groove 282 extends to the end face of the machine tool connecting section 280 away from the outer shell 100; an air hole 283 is provided in the air groove 282 located in the middle of the machine tool connecting section 280, and each air groove 282 extends to the front end face of the corresponding convex step 281. The end air groove 282 is used to discharge the cooling gas. The air groove 282 of each convex step 281 extends to the front end face of the corresponding convex step 281, so that the outer gap spaces of adjacent convex steps 281 are connected, so that the cooling gas passes through the gap between the sleeve 200 and the assembly kit 800, ensuring that the cooling gas can flow through the gap between the sleeve 200 and the assembly kit 800 and be discharged from the end air groove 282 to ensure the cooling effect.

[0039] In some embodiments of the present invention, referring to Figures 2 to 4 In order to better connect the outer gap space of two adjacent protruding steps 281, each air passage groove 282 extends forward to the side of the adjacent protruding step 281, so that the outer space of the two adjacent protruding steps 281 is connected through the air passage groove 282, ensuring that the flow path of the cooling gas is unobstructed and that the cooling gas can flow through the gap between the sleeve 200 and the assembly kit 800, thereby ensuring the cooling effect.

[0040] In some embodiments of the present invention, referring to Figures 2 to 4 Each outwardly projecting step 281 is provided with a protruding mating portion 286. Air holes 283 are located on the mating portion 286, and the end air groove 282 extends forward through the mating portion 286. The mating portion 286 is designed to fit snugly against the inner surface of the assembly kit 800. This allows cooling air to be delivered from the air holes 283 to the contact surface between the assembly kit 800 and the sleeve 200, effectively removing heat from the contact area and improving heat dissipation. Furthermore, because the mating portion 286 fits snugly against the assembly kit 800, the air groove 282 can better connect the outer spaces of two adjacent outwardly projecting steps 281.

[0041] In some embodiments of the present invention, referring to Figures 2 to 4The multiple air holes 283 and the multiple air grooves 282 are evenly distributed along the circumference of the sleeve 200, that is, the cooling gas can be evenly transported to the outer gap of the sleeve 200, ensuring that the overall temperature can be evenly cooled, avoiding local excessive temperature and deformation.

[0042] In some embodiments of the present invention, referring to Figures 2 to 4 The air passages 282 of the two adjacent convex steps 281 are arranged correspondingly along the first direction, so that the cooling gas can be better discharged to the front end of the sleeve 200, ensuring that the air path is unobstructed.

[0043] In some embodiments of the present invention, referring to Figures 2 to 4 The ultrasonic cutting device also includes a connector 285. A connecting hole 284 is provided on the outer side of the machine tool connecting section 280. The connector 285 extends into the connecting hole 284 and is used to connect the sleeve 200 to the machine tool assembly kit 800. The connector 285 can be a screw, and the connecting hole 284 can be a threaded hole. The connector 285 secures the sleeve 200 and the assembly sleeve 200 in position, ensuring coaxial rotation. Alternatively, the connector 285 can be a latch, bolt, pin, or other fastener.

[0044] In some embodiments of the present invention, the connection hole 284 is disposed in the air passage groove 282 so that the connection hole 284 can be processed simultaneously with the processing of the air passage groove 282 , thereby facilitating manufacturing.

[0045] In some embodiments of the present invention, the connection holes 284 are evenly distributed along the circumference of the sleeve 200 , so that the connection pre-tightening force between the sleeve 200 and the assembly kit 800 can be more uniform and the connection can be more stable.

[0046] This embodiment also provides a machine tool, including a drive device, an assembly kit connected to the drive device, and the ultrasonic cutting device provided in the embodiment of the present application. The outer side of the sleeve 200 is provided with a screw mounting hole, and the sleeve 200 is connected to the assembly kit by screws extending into the screw mounting hole. The drive device is used to drive the ultrasonic cutting device to move. It is understood that the drive device can be a linear drive module or a multi-axis drive module to drive the ultrasonic cutting device to move linearly or in space. In addition, the drive device can also be connected to a transducer to cause the cutting device to perform ultrasonic high-frequency vibration, thereby improving the cutting ability of the cutting mechanism. The machine tool can directly apply the above-mentioned ultrasonic cutting device.

[0047] In summary, the ultrasonic cutting device and the cutting mechanism 300 of the machine tool in this embodiment have a transducer 310 and a variable amplitude rod 320, so that the blade 330 increases the ultrasonic high-frequency axial vibration while moving back and forth in the first direction, thereby improving the cutting speed and cutting ability of the cutting mechanism 300, so that the cutting mechanism 300 can more efficiently cut thicker leather, non-woven fabrics and other soft sheets, significantly expanding the cutting range of the cutting machine; and, the cooling gas can flow through the first transmission assembly 510 and the transducer 310, and enter the air gap 210 through the air through hole 370, and finally cool and discharge from the air through hole 283, then the cooling gas can take away the heat generated between the first transmission assembly 510, the transducer 310, the variable amplitude rod 320, and the sleeve 200, thereby reducing the temperature of the motion mechanism, reducing thermal wear, and extending the service life of the motion mechanism of the cutting device.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. An ultrasonic cutting device, characterized in that: include: A housing, a sleeve, a cutting mechanism, and a driving mechanism; the sleeve is rotatably connected to the housing; the driving mechanism is used to drive the cutting mechanism to reciprocate along a first direction; the cutting mechanism includes a transducer, a horn, and a blade connected in sequence along the first direction; the sleeve is sleeved outside the horn; the driving mechanism includes a first transmission assembly and a power assembly; the first transmission assembly is connected to the cutting mechanism; the power assembly is connected to the first transmission assembly; the power assembly drives the cutting mechanism to reciprocate along the first direction via the first transmission assembly; The shell is provided with a cooling air duct, the transducer and the first transmission assembly are located in the cooling air duct, and the end of the amplitude transformer facing the transducer is provided with an air through hole connected to the cooling air duct, an air gap is provided between the middle inner wall of the sleeve and the middle outer wall of the amplitude transformer, and the air through hole is connected to the air gap; the sleeve is also provided with an air hole passing through the side wall of the sleeve, and the air hole is connected to the air gap.

2. The ultrasonic cutting device according to claim 1, characterized in that The sleeve includes a machine tool connecting section for connecting to a machine tool; the machine tool connecting section is located outside the outer shell, and the outer side surface of the machine tool connecting section is provided with an air groove connected to the air hole, and the air groove extends toward the direction of the blade to the end face of the machine tool connecting section.

3. The ultrasonic cutting device according to claim 2, characterized in that: A plurality of convex steps are provided on the outer side of the machine tool connecting section, and the plurality of convex steps are arranged in sequence along the first direction and the outer diameter of the convex steps closer to the blade is smaller; each of the convex steps is provided with an air groove; wherein the air groove farthest from the outer shell is the end air groove, and the end air groove extends to the end face of the machine tool connecting section away from the outer shell; the air groove located in the middle of the machine tool connecting section is provided with the air hole, and each of the air grooves extends to the front end face of the corresponding convex step.

4. The ultrasonic cutting device according to claim 3, characterized in that: Each of the air passages extends forward to the side surface of the adjacent convex step.

5. The ultrasonic cutting device according to claim 3, characterized in that: Each section of the outwardly convex step is provided with an outwardly convex matching portion, the air holes are provided on the matching portion, and the end air grooves pass through the matching portion forward.

6. The ultrasonic cutting device according to claim 3, characterized in that: The plurality of air holes and the plurality of air grooves are evenly distributed along the circumference of the sleeve.

7. The ultrasonic cutting device according to claim 3, characterized in that: The air passages of two adjacent sections of the outwardly convex steps are correspondingly arranged along the first direction.

8. The ultrasonic cutting device according to claim 2 or 3, characterized in that: It also includes a connecting piece; a connecting hole is provided on the outer side of the machine tool connecting section, and the connecting piece extends into the connecting hole, and the connecting piece is used to connect the sleeve and the assembly kit of the machine tool.

9. The ultrasonic cutting device according to claim 8, characterized in that: The connecting hole is arranged in the air passage groove.

10. The ultrasonic cutting device according to claim 9, characterized in that: The connecting holes are evenly distributed along the circumference of the sleeve.

11. A machine tool, characterized in that: It comprises a driving device, an assembly kit connected to the driving device, and the ultrasonic cutting device according to any one of claims 1 to 10, wherein a screw mounting hole is provided on the outer side of the sleeve, the sleeve is connected to the assembly kit by a screw extending into the screw mounting hole, and the driving device is used to drive the ultrasonic cutting device to move.

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