CN-121988568-A - Multi-mode cooperation-based laser calliper lens self-cleaning device and method

CN121988568ACN 121988568 ACN121988568 ACN 121988568ACN-121988568-A

Abstract

The invention discloses a laser calliper lens self-cleaning device and method based on multi-mode cooperation, and belongs to the technical field of cigarette manufacturing. The device comprises a pollution sensing unit, an annular ion air curtain unit, a piezoelectric ultrasonic unit, an ultraviolet laser unit, a controller and a controller, wherein the pollution sensing unit is used for collecting a pollution area P, an oiliness index Q and a particle density G on the surface of a lens, the annular ion air curtain unit is used for generating ion airflow flowing on the surface of the lens, the piezoelectric ultrasonic unit is used for transmitting high-frequency vibration to the surface of the lens, the ultraviolet laser unit is used for emitting pulse ultraviolet laser, and the controller is electrically connected with the units. The method comprises the steps of obtaining pollution characteristic parameters in real time, determining pollution levels, generating time sequence control instructions and cooperatively controlling the cleaning units to work. The invention realizes self-adaption, non-contact and non-stop efficient cleaning of the composite pollutants such as tobacco dust, tar, sugar and the like, meets the real-time cleaning requirement of a high-speed production line, and ensures the measurement precision and the operation stability.

Inventors

YANG CAIHONG
Liu Maochao
GENG HUA
CAI PEILIANG
HUA WEI
Yi Jincan
ZHU KAILIN
SHI YUNXIA
YI FANJUN
DING CONGLONG
LI XIONGFEI

Assignees

红云红河烟草(集团)有限责任公司

Dates

Publication Date: 20260508
Application Date: 20260316

Claims (10)

1. Laser calliper camera lens self-cleaning device based on multimode is cooperated, its characterized in that includes: pollution sensing unit (200) arranged around the laser calliper lens (100) for collecting the lens surface in real time Pollution characteristic parameters including a pollution area P, an oiliness index Q, and a particle density G; The annular ion air curtain unit (300) is coaxially arranged at the periphery of the lens (100) of the laser calliper and is used for generating ion air flow flowing on the surface of the attached lens to form a basic cleaning layer; the piezoelectric ultrasonic unit (400) is arranged on the base of the laser calliper lens (100) and is used for transmitting high-frequency vibration energy to the surface of the lens; The ultraviolet laser unit (500) is arranged at the side of the laser calliper lens (100), and the transmitting end of the ultraviolet laser unit faces the lens surface and is used for transmitting pulse ultraviolet laser to the lens surface; And the controller is electrically connected with the pollution sensing unit (200), the annular ion air curtain unit (300), the piezoelectric ultrasonic unit (400) and the ultraviolet laser unit (500) respectively.
2. The multi-modal collaborative laser calliper lens self-cleaning apparatus of claim 1, wherein the annular ion air curtain unit (300) comprises an annular electrode assembly (310), the annular electrode assembly (310) comprising an anode ring (311) and a cathode ring (312), the anode ring (311) and the cathode ring (312) being coaxially disposed and arranged in parallel at axial spacing along the lens, an axial spacing between the two rings being 3±0.1mm; First tungsten needle arrays (313) are uniformly distributed on the inner ring side of the anode ring (311) along the circumferential direction, the needle tips of the first tungsten needles face the surface of the lens, and the height of the tungsten needles is 0.8mm; second tungsten needle arrays (314) are uniformly distributed on the inner ring side of the cathode ring (312) along the circumferential direction, the needle tips of the second tungsten needles face the surface of the lens, and the height of the tungsten needles is 0.8mm; The anode ring (311) and the cathode ring (312) are respectively and electrically connected with the controller, and the working voltage is +/-5 kV.
3. The self-cleaning device for the laser calliper lens based on the multi-mode cooperation according to claim 1, wherein the piezoelectric ultrasonic unit (400) comprises a piezoelectric ceramic plate (410), the piezoelectric ceramic plate (410) is fixedly attached to a lens base of the laser calliper and used for transmitting high-frequency vibration to a lens body, and the working frequency of the piezoelectric ultrasonic unit (400) is 40kHz.
4. The multi-modal coordination-based laser calliper lens self-cleaning device according to claim 1, wherein the operating wavelength of the ultraviolet laser unit (500) is 355nm, which is configured to trigger the activation when the oiliness index Q collected by the pollution sensing unit (200) reaches a preset threshold.
5. The multi-modal coordination-based laser calliper lens self-cleaning device according to claim 1, wherein the contamination sensing unit (200) comprises an image acquisition element (210), the image acquisition element (210) being arranged towards the lens surface for acquiring image information of the lens surface; The controller comprises a processing chip, the input end of the processing chip is electrically connected with the image acquisition element (210), and the output end of the processing chip is electrically connected with the annular ion air curtain unit (300), the piezoelectric ultrasonic unit (400) and the ultraviolet laser unit (500) respectively.
6. The self-cleaning device for the laser calliper lens based on the multi-mode cooperation according to claim 1 or 2, wherein an insulating layer (320) is arranged between the whole annular electrode assembly (310) and an external member, the thickness of the insulating layer (320) is 0.5mm, and the withstand voltage is greater than 15kV.
7. A multi-mode cooperation-based self-cleaning method for a laser calliper lens, which is applied to the device of any one of claims 1 to 6, and is characterized by comprising the following steps: S1, acquiring pollution characteristic parameters of the surface of a lens in real time through a pollution sensing unit (200), wherein the pollution characteristic parameters comprise a pollution area P, an oiliness index Q and a particle density G; s2, the controller determines the current pollution level according to the pollution area P, the oiliness index Q and the particle density G; s3, the controller generates a corresponding multi-mode cleaning time sequence control instruction according to the pollution level; And S4, the controller selectively or in combination controls the annular ion air curtain unit (300), the piezoelectric ultrasonic unit (400) and the ultraviolet laser unit (500) to work cooperatively according to the time sequence control instruction, so that the self-adaptive cleaning of the lens surface is finished.
8. The self-cleaning method of a laser calliper lens based on multi-modal coordination according to claim 7, wherein in step S2, the controller determines the current pollution level through a preset pollution classification model according to the pollution area P, the oiliness index Q and the particle density G; The pollution classification model is pre-established according to the corresponding relation among the pollution area P, the oiliness index Q, the particle density G and the cleaning mode and is used for mapping the input three parameters to the corresponding pollution level.
9. The self-cleaning method of the laser calliper lens based on the multi-modal coordination according to claim 7, wherein the time sequence control command generated in the step S3 determines the start combination of the cleaning unit according to the specific values of the pollution area P, the oiliness index Q and the particle density G according to a preset trigger rule: When the oiliness index Q reaches a first preset threshold value preset by a controller, starting an ultraviolet laser unit (500); When the particle density G reaches a second preset threshold value preset by the controller, the piezoelectric ultrasonic unit (400) is started and is operated in cooperation with the annular ion air curtain unit (300); The annular ion curtain unit (300) serves as a basic cleaning layer and is kept in an activated state in each cleaning mode.
10. The method for automatically cleaning the lens of the laser calliper based on the multi-mode cooperation according to claim 7, wherein in the step S4, the annular ion air curtain unit (300) continuously operates in one cleaning period, and the piezoelectric ultrasonic unit (400) and the ultraviolet laser unit (500) are started as required in a preset period according to the pollution level.

Description

Multi-mode cooperation-based laser calliper lens self-cleaning device and method Technical Field The invention belongs to the technical field of cigarette manufacturing, and particularly relates to a laser calliper lens self-cleaning device and method based on multi-mode cooperation. Background The laser diameter measuring instrument is core on-line measuring equipment for detecting key size parameters such as cigarette diameter, roundness and the like in real time in the cigarette production process, and the measuring precision is directly related to consistency control of cigarette quality and sensory quality of cigarette products. In the running process of the high-speed rolling machine set, complex pollutants such as tobacco dust, tar, sugar and the like are easy to be adhered and accumulated on the surface of an optical lens of the calliper, and an optical shielding layer with light transmittance attenuated is formed, so that measurement signal distortion, false alarm rate increase and even equipment shutdown are caused. At present, cleaning and maintenance of a laser calliper lens mainly depends on manual timing wiping or a traditional air blowing device. The cleaning operation of manual wiping mode needs to contact the lens surface with the aid of rag or cleaning tool, because wiping tool can physically block the scanning light path of laser calliper, leads to real-time measurement data to lose instantaneously, in order to avoid high-speed moving parts to cause the injury to the human body simultaneously, just can carry out manual cleaning after having to shut down, this not only causes frequent production interruption, seriously influences the comprehensive efficiency of equipment, and easily causes the fish tail of lens optics cladding in the repeated wiping process, shortens optical element's life. While the traditional air blowing mode can realize continuous cleaning, trace moisture and oil are inevitably remained in industrial compressed air due to the fact that the industrial compressed air is derived from atmospheric humidity and an air compressor lubricating system, under the condition of high-speed air flow blowing, the residues are easy to condense on the surface of a lens with low temperature difference to form water mist or an oil film, light path interference is aggravated, meanwhile, the air blowing has limited effect of removing organic pollutants such as tar and sugar with high adhesiveness, and the cleanliness of the lens cannot be restored fundamentally. The cleaning automation level is improved, and some enterprises try to introduce cleaning technologies such as ultrasonic waves, ultraviolet irradiation and the like. However, the technologies mostly adopt independent operation modes in practical application, and have obvious limitations that although ultrasonic vibration can effectively strip particles, the removal capability of the ultrasonic vibration on oily organic matters such as tar, sugar and the like is insufficient, and continuous high-frequency vibration can cause loosening of a lens fixing structure to influence measurement stability, and ultraviolet irradiation can degrade the organic matters through photochemical decomposition, but when the ultrasonic vibration is started for a long time, the energy consumption is high, the ageing of an optical film layer is accelerated, and the service life of a lens is shortened. There are also attempts to apply the ultrasonic wave and the ultraviolet light in combination, but because the stripping action of the ultrasonic wave on the particles and the degradation action of the ultraviolet light on the organic matters belong to different physical and chemical mechanisms, the simple time sequence superposition or synchronous operation is difficult to realize the effect cooperation, on one hand, ultrasonic vibration cannot enhance the degradation efficiency of the ultraviolet light on deep greasy dirt, ultraviolet irradiation cannot make up the stripping blind area of the ultrasonic wave on the viscous organic matters, on the other hand, the problems of energy consumption accumulation and device loss exist in the continuous operation mode of the ultrasonic wave and the ultraviolet light irradiation, and on the other hand, the compound application may aggravate the aging of the lens and the temperature rise of the system. The present application has been made to solve the above-mentioned problems. Disclosure of Invention Aiming at the problems that the cleaning of a laser calliper lens in the prior art depends on manual operation to cause production interruption, loss of measurement data and easy damage of optical elements, moisture and oil are easy to introduce in traditional air blowing cleaning, the cleaning effect on viscous organic pollutants is poor, and the single ultrasonic and ultraviolet illumination cleaning mode has functional limitations, insufficient synergistic effect, easy aggravation of ageing of devices, excessive ener