A cutting knife mechanism for automatic tapping machine

Abstract

The application discloses a cutting knife mechanism for an automatic tapping machine and relates to tapping technology. The ultrasonic driving device drives the cutting knife to tap by using ultrasonic frequency. The tapping mode of cycle line reduces the impedance during tapping, reduces the thrust, prolongs the service life of the whole machine, reduces the labor intensity, and has a simple structure of the ultrasonic driving device without magnetic poles and windings. No electromagnetic field is generated during work, and the ultrasonic driving device is not disturbed by external electromagnetic fields and other radiation sources, so that the tapping operation is more stable and reliable. The mechanical vibration of the vibration body of the ultrasonic driving device is ultrasonic vibration that cannot be heard by human ears, and the operation is very quiet, improving the working environment. In the tapping process, the self-adaptive block cooperates with the self-adaptive seat and the torsional spring to play a guiding role around the outside of the tree during tapping operation, and also plays a role in unifying the tapping depth, so that the cutting knife mechanism and the whole tapping machine are better adapted, and the tapping is more smooth and reliable.

Description

Technical Field

[0001] This invention relates to the field of rubber tapping technology, and in particular to a cutting mechanism for an automatic rubber tapping machine. Background Technology

[0002] Rubber tapping is a process of collecting rubber sap by making incisions in the bark of rubber trees. It requires highly skilled workers who can operate the tapping knife with extreme care and precision to cut and remove thin layers of bark or solidified latex. Extreme caution must be exercised when cutting the bark to avoid cutting too deep, as this can damage the rubber tree.

[0003] For example, a search reveals Chinese patent application number 201080061929.5, which discloses a device for tapping rubber. This device includes a hollow body, a rotating shaft, a motor, a pair of cams, and multiple bearings. Its function is that when the rotating shaft rotates with the help of the motor, the bearings provide reciprocating motion to the cams, which in turn provide reciprocating motion to the cutter and short-pitch thrust device for cutting the bark. Another example is Chinese patent application number 201910701510.4, which discloses a cam-driven needle tapping machine, including an upper track, a lower track, and a moving assembly. Its function is that under the action of the cams, a moving block reciprocates, and the needles mounted on the moving block also reciprocate, piercing the surface of the rubber tree to collect latex. Finally, Chinese patent application number 201922379571.1 discloses a needle-type rubber tapping device, which achieves the function of controlling the needle's movement trajectory through the contour curves of the first and second cams of the needle mechanism, enabling control of the piercing depth, ensuring no impact, and reducing damage to the rubber tree.

[0004] Based on the above search and combined with existing technology, it was found that rubber tapping equipment similar to those disclosed above all use DC geared motors to drive the cutter blade for rubber tapping. However, DC geared motors produce some noise during operation, and if the noise cannot be controlled, it will affect the working environment and increase the risk of worker errors. Moreover, due to the working principle of DC geared motors and the complexity of the working environment, the lifespan of the equipment is easily shortened, requiring regular replacement or maintenance, which is costly. In addition, most existing rubber tapping equipment suffers from poor controllability of the cutter blade positioning, resulting in high resistance during rubber tapping. Consequently, the rubber tapping operation requires a large thrust, increasing the overall operating losses of the rubber tapping machine and shortening its service life. Therefore, an automatic rubber tapping machine cutter mechanism is proposed to improve the above problems. Summary of the Invention

[0005] The purpose of this application is to provide a cutting mechanism for an automatic rubber tapping machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a cutting mechanism for an automatic rubber tapping machine, comprising a cutting blade, a base, an ultrasonic drive device, and an adaptive limiting component;

[0007] The cutter is connected to the ultrasonic drive device, which is mounted on the base via the adaptive limiting member. The base has mounting holes for the rubber tapping machine support rod at its center.

[0008] The ultrasonic drive device uses ultrasonic frequency to drive the cutter to perform rubber cutting. In the reciprocating operation, the cyclic cutting method reduces the resistance and thrust during rubber cutting, which helps to extend the life of the machine and reduce labor intensity. Moreover, the ultrasonic drive device has a simple structure, without magnetic poles and windings, and does not generate electromagnetic fields during operation. It is also not affected by external electromagnetic fields or other radiation sources, making rubber cutting operations more stable and reliable. Furthermore, since the mechanical vibration of the vibrator of the ultrasonic drive device is ultrasonic vibration that is inaudible to the human ear, it generates large torque at low speeds. Without gear reduction mechanisms, it operates very quietly, improving the working environment.

[0009] Furthermore, the ultrasonic driving device is an ultrasonic transducer.

[0010] Furthermore, the ultrasonic driving device is an ultrasonic motor.

[0011] Furthermore, the adaptive limiting component includes a fixed support, a torsion spring, and a pin.

[0012] The ultrasonic motor is mounted on the fixed support, and the cutter is mounted on the output shaft of the ultrasonic motor;

[0013] The torsion spring includes a first tension part and a second tension part, the first tension part is fixedly connected to the base, and the second tension part is elastically connected to the fixed support.

[0014] The pin passes through the base and the fixed support to fix the torsion spring between the base and the fixed support, and the pin passes through the center of the torsion spring.

[0015] Furthermore, the base includes an upper tool holder and a lower tool holder;

[0016] The upper tool holder, fixed support, and lower tool holder each have corresponding mounting holes on their sides. The pin passes through the upper tool holder, fixed support, and lower tool holder in sequence to fix the torsion spring between the fixed support and the lower tool holder.

[0017] The upper tool holder and the lower tool holder are detachable.

[0018] Furthermore, the fixed support includes an adaptive seat and an adaptive block;

[0019] The adaptive seat is located between the upper tool holder and the lower tool holder, and the pin passes through the adaptive seat;

[0020] Both the ultrasonic motor and the adaptive block are mounted on the adaptive base.

[0021] During the tapping process, the adaptive block, in conjunction with the adaptive seat and torsion spring, guides the tapping operation around the outside of the tree and also helps to unify the tapping depth. In addition, the cooperation of the adaptive block, adaptive seat, torsion spring and pin shaft can make the tapping mechanism more compatible with the whole tapping machine, and make the tapping smoother and more reliable.

[0022] Furthermore, a cotter pin is vertically inserted into the end of the pin extending to the outside of the lower tool holder, which can effectively prevent the pin from detaching from the base.

[0023] Furthermore, the cutting tool is an alloy cutting tool.

[0024] Furthermore, the cutter is a PCD cutter.

[0025] In summary, the technical effects and advantages of this invention are as follows:

[0026] 1. In this invention, the ultrasonic drive device uses ultrasonic frequency to drive the cutter to perform rubber cutting action. In the reciprocating operation, the periodic cyclic cutting method reduces the resistance during rubber cutting and reduces the thrust, which helps to extend the life of the whole machine. At the same time, it reduces the labor intensity. Moreover, the ultrasonic drive device has a simple structure, no magnetic poles or windings, and no electromagnetic field is generated during operation. It is also not affected by external electromagnetic fields or other radiation sources, making the rubber cutting operation more stable and reliable. Furthermore, since the mechanical vibration of the vibrator of the ultrasonic drive device is ultrasonic vibration that is inaudible to the human ear, it generates a large torque at low speed. There is no gear reduction mechanism, so the operation is very quiet, improving the working environment.

[0027] 2. In this invention, by setting an adaptive limiting component including a fixed support, a torsion spring, and a pin, the adaptive block, in conjunction with the adaptive support and the torsion spring, plays a guiding role around the outside of the tree during the tapping process. It also plays a role in unifying the tapping depth. In addition, the cooperation of the adaptive block, the adaptive support, the torsion spring, and the pin can make the tapping mechanism more compatible with the whole tapping machine, and the tapping is smoother and more reliable.

[0028] 3. In this invention, by vertically inserting a cotter pin into the end of the pin shaft extending to the outside of the lower cutter holder, the pin shaft can be effectively prevented from detaching from the base. By making the upper cutter holder and the lower cutter holder detachable, it is convenient to disassemble and repair. The cutter using alloy cutter or PCD cutter has good hardness, stability and toughness, long service life, and the high surface finish and flatness can greatly improve the rubber cutting efficiency. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural diagram of the cutter mechanism in the installed state in this embodiment;

[0031] Figure 2 This is a schematic diagram of the planar structure of the cutter mechanism in the installed state in this embodiment;

[0032] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0033] Figure 4 This is a side view of the cutting mechanism in this embodiment.

[0034] In the diagram: 1. Cutting blade; 2. Adaptive block; 3. Ultrasonic drive device; 4. Torsion spring; 5. Cotter pin; 6. Adaptive seat; 7. Pin; 8. Upper tool holder; 9. Lower tool holder. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example: Reference Figure 1-4 The automatic rubber tapping machine cutting mechanism shown includes a cutting blade 1, a base, an ultrasonic drive device 3, and an adaptive limiting component.

[0037] The cutter 1 is connected to the ultrasonic drive device 3, which is mounted on the base via an adaptive limiting component. The base has mounting holes for the rubber tapping machine support rod at its center.

[0038] The ultrasonic drive device 3 uses ultrasonic frequency to drive the cutter 1 to perform rubber cutting action. In the reciprocating operation, the periodic cyclic cutting method reduces the resistance during rubber cutting and reduces the thrust, thereby reducing the operating loss of the entire rubber tapper, which is conducive to extending the service life of the machine and reducing labor intensity.

[0039] In addition, compared with traditional DC geared motors, ultrasonic motors, which are used as ultrasonic drive devices, have a simple structure, requiring only metal stators and rotors, piezoelectric ceramics for excitation vibration, no magnetic poles or windings, no electromagnetic field generated during operation, and are not affected by external electromagnetic fields or other radiation sources, making rubber tapping operations more stable and reliable. Compared with ordinary DC geared motors, ultrasonic motors are smaller and lighter with the same output torque, and their torque density during operation is generally more than 10 times that of electromagnetic motors, resulting in higher rubber tapping efficiency.

[0040] Furthermore, since the mechanical vibration of the vibrating body of the ultrasonic motor is ultrasonic vibration that is inaudible to the human ear, it generates a large torque at low speeds. Without a gear reduction mechanism, it runs very quietly. This not only solves the mechanical noise problem caused by the reduction mechanism, but also eliminates a series of problems caused by lubrication in traditional motors. For example, no lubrication system is needed between the stator and rotor. This not only ensures the normal operation of the ultrasonic motor, but also reduces the pollution to the environment caused by the use of lubricating oil or grease.

[0041] Specifically, the ultrasonic drive device 3 can employ an ultrasonic transducer. The ultrasonic transducer utilizes the piezoelectric effect of a piezoelectric ceramic disc with the same resonant frequency to convert electrical energy into mechanical vibration. Generally, an ultrasonic generator generates ultrasonic waves, which are then converted into mechanical vibrations by the ultrasonic transducer. These vibrations are then transmitted through an ultrasonic output device and an ultrasonic receiver to form ultrasonic waves. Therefore, the ultrasonic transducer converts input electrical power into mechanical power, i.e., ultrasonic waves, and transmits them, consuming only a very small portion of its own power. Specifically, the ultrasonic transducer mainly consists of a housing, acoustic window, piezoelectric ceramic disc transducer, backing, lead cable, and receiver. The piezoelectric ceramic disc transducer has the same function as most transducers, primarily used for transmitting and receiving ultrasonic waves. The ultrasonic receiver, located above the piezoelectric ceramic disc transducer, mainly consists of a lead cable, transducer, metal ring, and rubber gasket, and receives Doppler echo signals generated outside the frequency band of the piezoelectric ceramic disc transducer.

[0042] Alternatively, the ultrasonic drive device 3 can also employ an ultrasonic motor. An ultrasonic motor is a type of motor that uses the elastic vibration of ultrasonic waves to obtain driving power, and then uses friction to drive the rotor. It generally consists of a vibrating body and a moving body. The vibrating body is equivalent to the stator in a traditional motor, made of piezoelectric ceramics and metallic elastic materials; the moving body is equivalent to the rotor in a traditional motor, made of elastic bodies, friction materials, and plastics. When a high-frequency AC voltage is applied to the piezoelectric ceramic transducer of the vibrating body, the inverse piezoelectric effect or electrostriction effect causes the stator to generate microscopic mechanical vibrations at frequencies above 20kHz in the ultrasonic band. This vibration is then amplified through resonance and converted into rotational or linear motion through frictional coupling.

[0043] The adaptive limiting component includes a fixed support, a torsion spring 4, and a pin 7. The ultrasonic motor is mounted on the fixed support, and the cutter 1 is mounted on the output shaft of the ultrasonic motor. The torsion spring 4 includes a first tension part and a second tension part. The first tension part is fixedly connected to the base, and the second tension part is elastically connected to the fixed support. The pin 7 passes through the base and the fixed support to fix the torsion spring 4 between the base and the fixed support, and the pin 7 passes through the center of the torsion spring 4. By utilizing the elastic effect of the torsion spring 4, the ultrasonic drive device 3 and the cutter 1 mounted on the fixed support can better meet the rubber cutting requirements.

[0044] Furthermore, the base includes an upper tool holder 8 and a lower tool holder 9. The upper tool holder 8, the fixed support, and the lower tool holder 9 each have corresponding mounting holes on their sides. The pin 7 passes through the upper tool holder 8, the fixed support, and the lower tool holder 9 in sequence to fix the torsion spring 4 between the fixed support and the lower tool holder 9.

[0045] A cotter pin 5 is vertically inserted into the end of the pin 7 extending to the outside of the lower tool holder 9, which can effectively prevent the pin 7 from detaching from the base.

[0046] The upper tool holder 8 and the lower tool holder 9 are detachable, which facilitates disassembly, assembly and maintenance.

[0047] Furthermore, the fixed support includes an adaptive seat 6 and an adaptive block 2. The adaptive seat 6 is located between the upper cutter holder 8 and the lower cutter holder 9. The pin 7 passes through the adaptive seat 6. The ultrasonic motor and the adaptive block 2 are both mounted on the adaptive seat 6. The adaptive block 2, together with the adaptive seat 6 and the torsion spring 4, plays a guiding role around the outside of the tree during rubber tapping, and also plays a role in unifying the tapping depth. In addition, the cooperation of the adaptive block 2, the adaptive seat 6, the torsion spring 4 and the pin 7 can make the cutter mechanism more compatible with the whole rubber tapping machine, and make the rubber tapping smoother and more reliable.

[0048] To ensure the strength of the cutting mechanism, the adaptive block 2, adaptive seat 6, pin 7, cotter pin 5, upper cutter holder 8, and lower cutter holder 9 are all made of stainless steel, which has high hardness, high strength, and is not easy to rust, thus ensuring the stability of rubber tapping operations.

[0049] Among them, the cutting blade 1 can be an alloy cutting blade. The alloy cutting blade is a tool made of one or more alloy materials, which has good hardness, stability and toughness, as well as good rust resistance and durability, and a long service life.

[0050] Alternatively, the cutter 1 can also be a PCD cutter. PCD cutters have superior properties such as high hardness, wear resistance, heat resistance, and long service life. In addition, the high smoothness and flatness of the surface can greatly improve the rubber cutting efficiency.

[0051] The working principle of this invention is as follows: The ultrasonic drive device 3 uses ultrasonic frequency to drive the cutter 1 to perform rubber cutting action. In the reciprocating operation, the periodic cyclic cutting method reduces the resistance during rubber cutting and reduces the thrust, which helps to extend the service life of the entire machine. At the same time, it reduces labor intensity. Moreover, since the mechanical vibration of the vibrator of the ultrasonic drive device 3 is ultrasonic vibration that is inaudible to the human ear, it generates a large torque at low speed. There is no gear reduction mechanism, so the operation is very quiet, improving the working environment. During the rubber cutting process, the adaptive block 2, together with the adaptive seat 6 and the torsion spring 4, plays a guiding role around the outside of the tree during the rubber cutting operation. It also plays a role in unifying the rubber cutting depth. In addition, the cooperation of the adaptive block 2, the adaptive seat 6, the torsion spring 4 and the pin 7 can make the cutter mechanism more compatible with the entire rubber tapping machine, and the rubber cutting is smoother and more reliable.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cutter mechanism for an automatic tapping machine, characterized by: The utility model relates to a cutting knife (1), base, ultrasonic drive device (3) and adaptive limiting piece, the cutting knife (1) is connected on the ultrasonic drive device (3), the ultrasonic drive device (3) is installed on the base through the adaptive limiting piece, and the base center is equipped with cutting rubber machine support rod installation hole position; The adaptive limiting piece includes fixed support, torsional spring (4) and pin shaft (7), the ultrasonic drive device (3) is installed on the fixed support, and the cutting knife (1) is installed on the output shaft of the ultrasonic drive device (3), the torsional spring (4) includes first stretch and second stretch, the first stretch is fixedly connected the base, and the second stretch is elastically connected the fixed support, the pin shaft (7) passes through the base and the fixed support and fixes the torsional spring (4) between the base and the fixed support, and the pin shaft (7) is arranged in the center of the torsional spring (4), The base includes upper knife seat (8) and lower knife seat (9), the upper knife seat (8), fixed support, lower knife seat (9) side are respectively opened installation hole, the pin shaft (7) passes through the upper knife seat (8), fixed support, lower knife seat (9) in proper order and fixes the torsional spring (4) between the fixed support and the lower knife seat (9), the upper knife seat (8) and the lower knife seat (9) are detachable, The fixed support includes adaptive seat (6) and adaptive block (2), the adaptive seat (6) is located between the upper knife seat (8) and the lower knife seat (9), and the pin shaft (7) passes through the adaptive seat (6), the ultrasonic drive device (3) and the adaptive block (2) are installed on the adaptive seat (6).

2. The knife mechanism for automatic tapping machine according to claim 1, characterized in that: The ultrasonic drive device (3) is an ultrasonic transducer.

3. The cutter mechanism for automatic tapping machine according to claim 1, characterized in that: The ultrasonic drive device (3) is an ultrasonic motor.

4. The cutter mechanism for automatic tapping machine according to claim 1, characterized in that: The end of the pin shaft (7) extending to the outside of the lower knife seat (9) is vertically inserted with an open pin (5).

5. The cutter mechanism for automatic tapping machine according to claim 1, characterized in that: The cutting knife (1) is an alloy cutting knife.

6. The cutter mechanism for an automatic tapping machine according to claim 1, characterized in that: The cutting knife (1) is a PCD cutting knife.

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