Laser cleaning device for online perforation drum wheel

Abstract

The invention discloses a laser cleaning device for an online perforated drum wheel, which comprises a switchable reflecting mirror mechanism arranged on an output light path of a laser device; the cleaning focus lens is a cylindrical lens and is used for converting an incident light beam into a linear light beam, and the extending direction of the linear light beam is parallel to the space of the central axis of the rotary drum-shaped wheel; the switchable reflecting mirror mechanism comprises a reflecting mirror driven by a first driver; in the first state, the reflector outputs a light path corresponding to the perforated focusing mirror to form a first light path; in the second state, the reflector output light path corresponds to the cleaning focus lens to form a second light path. Laser of original equipment is used for online drum wheel cleaning, so that the maintenance time of personnel can be reduced, the working efficiency of the equipment is improved, and the equipment investment is also reduced; after laser automatic cleaning is adopted, only 2-3 minutes are needed for cleaning the drum wheel once, the drum wheel does not need to be detached from equipment, and the cleaning efficiency is improved by nearly 20 times.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automatic control of cigarette, and particularly relates to a laser cleaning device for an online perforating drum. BACKGROUND

[0002] In the conventional online laser perforation, laser is converged on the surface of a thin rod to gasify the material of the thin rod to form a hole, and the gasified material formed during the process is adsorbed by the drum-shaped wheel and adheres to the surface of the drum-shaped wheel, thereby changing the outer shape of the drum-shaped wheel. When the dust accumulation is too much to change the outer shape of the drum-shaped wheel by more than 0.5 mm, the thin rod jumps up and down when it rolls on the surface of the drum-shaped wheel to punch holes, so that the focus of the focused light changes to cause defocusing. At this time, the hole may become large, tailing or not punched, and the like. Such a thin rod is a waste product that cannot meet the process standard and needs to be removed. Under the conventional condition, the operation of the production equipment needs to be stopped, the fixing flange of the drum-shaped wheel is loosened, the drum-shaped wheel is manually disassembled, the drum-shaped wheel is sent to a cleaning pool for water washing and scrubbing, the drum-shaped wheel is dried after completion, and then the drum-shaped wheel is installed back on the original equipment, the position of the drum-shaped wheel is adjusted, and then the equipment continues to operate. Such a process consumes time and materials, and it takes at least 20 minutes to clean once.

[0003] The Chinese patent CN109483050A of the present team discloses a device for realizing laser perforation and laser cleaning by laser polarity conversion. The device uses a fast light splitting device to realize beam combining and splitting by changing the beam polarity, so that the laser emits cleaning laser in the gap of the perforation laser to clean the surface of the rotating drum. Since this technical path involves beam polarity change, beam combining and splitting mirrors, and light splitting devices, it involves the manufacture and procurement of multiple high-value devices, which is very costly. In addition, the perforation is running at the same time, and the laser is separated to realize cleaning. Although the technology is feasible, the drum surface is adsorbed by the cigarette at this time, and the light leakage generated by the light splitter will affect the normal operation of the cigarette. The light leakage will produce undesirable burning spots on the surface of the cigarette, and will also affect the peak value of the laser power when the perforation state is changed, thereby reducing the perforation efficiency. In addition, the distribution of the cigarette on the drum surface also makes it impossible for the laser to clean all areas of the drum where the cigarette is located, resulting in incomplete cleaning.

[0004] The information disclosed in this BACKGROUND section is only intended to increase an understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms prior art that is already known to those of ordinary skill in the art. SUMMARY

[0005] The present application aims to provide a laser cleaning device for an online perforating drum, so as to overcome the defects in the prior art.

[0006] A laser cleaning device for online perforated drum, comprising a laser, a perforation focusing mirror, a stick poking roller, a rotating drum, a cleaning focusing mirror, and further comprising: A switchable mirror mechanism arranged in the output light path of the laser; The cleaning focusing mirror is a cylindrical lens, which is used to transform the incident light beam into a linear light beam, and the extension direction of the linear light beam is spatially parallel to the central axis of the rotating drum. The switchable mirror mechanism comprises a mirror driven by a first driver; in the first state, the mirror output light path corresponds to the perforation focusing mirror to form a first light path; in the second state, the mirror output light path corresponds to the cleaning focusing mirror to form a second light path.

[0007] Further preferably, an axial movement mechanism is arranged outside the rotating drum, which is used to drive the cleaning focusing mirror to reciprocate along a direction parallel to the central axis of the rotating drum.

[0008] Further preferably, the axial movement mechanism comprises: A sliding pair whose guide direction is parallel to the central axis of the rotating drum, and the mounting assembly of the cleaning focusing mirror is slidingly connected with the sliding pair; A reciprocating movement pair connected with the mounting assembly of the cleaning focusing mirror, which is used to drive the mounting assembly to reciprocate along the sliding pair.

[0009] Further preferably, the sliding pair is any one of the following structures: a combination structure of a sliding shaft and a linear bearing, a combination structure of a sliding rod and a lubricating block, or a dovetail groove slider structure.

[0010] Further preferably, the reciprocating movement pair comprises a second driver and a transmission mechanism driven by the second driver; when the second driver is a rotary driver, it cooperates with a screw nut transmission mechanism to drive the mounting assembly; when the second driver is a linear driver, it directly drives a pull rod to drive the mounting assembly.

[0011] A stick production equipment with drum cleaning function, comprising: A laser, a perforation focusing mirror, a stick poking roller, a rotating drum, a central shaft, and a laser cleaning device for online perforated drum as claimed in any one of the preceding claims; A clutch driving unit arranged at the axial end of the rotating drum; The clutch driving unit comprises a clutch and a cleaning driving component; The central shaft is connected to the main driving device for perforation processing, and selectively engages with the rotating drum through the clutch to drive it to perform perforation work; When the clutch is disengaged, the cleaning driving component drives the rotating drum to rotate, so that the laser cleaning device for online perforated drum cleans it.

[0012] Further preferably, the clutch driving unit is arranged at one end of the rotary drum wheel; The central shaft is connected with an inner flange, the clutch is arranged on the inner flange or the central shaft and selectively engages with an outer flange connected with the rotary drum wheel; The cleaning driving part is a hollow driver which is sleeved on the central shaft or the gas valve connector, and the output end thereof is drivingly connected with the outer flange or the rotary drum wheel.

[0013] Further preferably, the clutch is arranged at the flange connection at one end of the rotary drum wheel; The cleaning driving part is arranged at the other end of the rotary drum wheel and comprises a third driver and a transmission pair connecting the third driver and the rotary drum wheel, wherein the transmission pair comprises a gear or a belt drive.

[0014] A control method of a laser cleaning device using the online perforating drum wheel according to any one of the preceding technical solutions, comprising the following steps: Switching between two states by means of a switchable mirror mechanism to correspondingly execute either one of two light path switching logics; The first logic comprises: When the switchable mirror mechanism is in the first state, the light beam emitted by the laser is guided to the first light path and converged through the perforating focusing mirror to perform perforation processing on the thin rod which is rotated by the thin rod pushing roller and the rotary drum wheel; When the switchable mirror mechanism is switched to the second state, the light beam emitted by the laser is guided to the second light path and converged through the cleaning focusing mirror to the circumferential surface of the rotary drum wheel to perform cleaning on the rotary drum wheel; The second logic comprises: When the switchable mirror mechanism is in the first state, the light beam emitted by the laser is guided to the second light path and converged through the cleaning focusing mirror to the circumferential surface of the rotary drum wheel to perform cleaning on the rotary drum wheel; When the switchable mirror mechanism is switched to the second state, the light beam emitted by the laser is guided to the first light path and converged through the perforating focusing mirror to perform perforation processing on the thin rod which is rotated by the thin rod pushing roller and the rotary drum wheel.

[0015] Advantages: After the implementation of the technical solution, the following advantages are produced: When the perforating equipment is running, the drum wheel is not cleaned, and the leaked laser does not cause misburning of the running thin rod to affect the product quality; The central shaft is provided with the clutch, which is simple and feasible and does not change the original perforating running state of the equipment; During the stop of the perforating machine, the drum wheel is cleaned, so that the laser can clean the entire drum wheel circumference, and quality hidden dangers are avoided; Independent drum drive allows the drum to rotate independently of the original drive during periods when fine rod production is paused, thus achieving fully automatic cleaning; The reciprocating drive assembly enables cleaning of the axial surface area of ​​the drum with a smaller laser linear focusing length and higher linear energy, thus improving cleaning efficiency.

[0016] Using the laser from the original equipment for online drum cleaning can reduce personnel maintenance time, improve equipment efficiency, and reduce equipment investment. After adopting automatic laser cleaning, drum cleaning only takes 2-3 minutes per cycle, and there is no need to remove the drum from the equipment, increasing cleaning efficiency by nearly 20 times. Attached Figure Description

[0017] Figure 1a Schematic diagram of the state of the reflector being out of the optical path - 1; Figure 1b : A schematic diagram of the state -1 of the reflector inserted into the optical path; Figure 1c : Schematic diagram of the state of the reflector inserted into the optical path -2; Figure 1d : Schematic diagram of the state of the reflector being out of the optical path -2; Figure 1e : The surface of the drum-shaped wheel after cleaning; Figure 2a : Schematic diagram of state 1 with sliding joint and reciprocating joint; Figure 2b : Schematic diagram of state 2 with sliding joint and reciprocating joint; Figure 2c : A schematic diagram of a drum wheel with sliding joints and reciprocating joints after cleaning; Figure 3a : Schematic diagram of the working process of a sliding pair that matches a sliding shaft and a bearing; Figure 3b : Schematic diagram of the sliding pair that matches the sliding rod and the lubrication block; Figure 3c Schematic diagram of the working process of the sliding dovetail groove sliding pair; Figure 4 : A schematic diagram of a linear actuator driving the reciprocating motion of a cleaning focusing lens assembly; Figure 5a and Figure 5b : A schematic diagram showing that both the clutch and the hollow actuator are located in the inner flange; Figure 5c : Schematic diagram of clutch sleeve connecting to center shaft drive sleeve inner flange; Figure 5d A schematic diagram showing the clutch driver connected to the central shaft drum with bearings at both ends; Figure 5e: Schematic diagram of clutch sleeve center shaft drive connected to air valve connector; Figure 5f : A schematic diagram of a structure in which the driver drives the output wheel to rotate the drum wheel; Figure 5g : A schematic diagram of a structure in which the driver rotates the drum and disengages the output wheel; Figure 5h : Schematic diagram of an overrunning clutch equipped with a positioning ball; Figure 5i : Schematic diagram of an overrunning clutch equipped with a positioning pin; Figure 5j Schematic diagram of electro / pneumatic valve control positioning column Figure 6a and Figure 6b The second arrangement of the clutch drive unit; Figure 6c Schematic diagram of the drive unit's 5-gear transmission; Figure 7a and Figure 7b Schematic diagram of reciprocating drive; Figure 7c and Figure 7d Schematic diagram of dual-clutch drive. Detailed Implementation

[0018] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The present invention aims to provide a laser cleaning device for an online perforated drum and a fine rod production equipment incorporating the device, realizing integrated, online operation of fine rod perforation and drum cleaning, improving production efficiency and extending the service life of the drum. It should be noted that the accompanying drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention; in the following embodiments, "axial" and "radial" refer to the central axis of the rotating drum, and "spatial parallelism" means that the directional deviation between the two components is within an acceptable error range in the art.

[0019] Example 1: Laser Cleaning Device for Basic Online Perforated Drums This embodiment provides a basic laser cleaning device, the core structure of which includes: a laser, a driver-1, a reflector, a channel-1, a channel-2, a perforated focusing lens, a thin rod roller, a rotating drum wheel, and a cleaning focusing lens. The specific connections and arrangements of each component are as follows: 1.1 Component Structure and Connection The laser used is a pulsed fiber laser, which is suitable for the energy requirements of perforating thin rods and vaporizing dust accumulation on drums. The driver-1 uses a small servo motor, whose output shaft is fixedly connected to the rotating shaft of the reflector through a coupling, driving the reflector to rotate around the rotating shaft, realizing the "insertion" or "disengagement" action of the reflector near the laser output optical path; the rotation stroke of the reflector is controlled by a limit switch to ensure precise switching of the optical path.

[0020] Channel-1 and Channel-2 are both optical transmission channels, made of sealed metal sleeves with an anti-reflective coating on the inner wall to reduce light loss. The input end of Channel-1 is aligned with the beam reflection direction when the reflector is in "State 1", and the output end is coaxially connected to the input end of the perforated focusing lens. The input end of Channel-2 is aligned with the beam reflection direction when the reflector is in "State 2", and the output end is coaxially connected to the input end of the cleaning focusing lens.

[0021] The perforation focusing lens is a convex lens used to converge the pulse beam into a spot with a diameter of 0.1mm to 0.5mm to meet the precision requirements of perforating thin rods; the cleaning focusing lens is a cylindrical lens, also made of quartz, whose generatrix direction is parallel to the central axis of the rotating drum wheel, which can transform the incident circular pulse beam into a linear beam.

[0022] The thin rods are symmetrically arranged on both sides of the rotating drum wheel. The surface of the rollers is provided with arc-shaped grooves that fit the thin rods, which are used to clamp the thin rods and drive them to rotate. The circumferential surface of the rotating drum wheel is provided with positioning grooves corresponding to the thin rods. The thin rods are placed in the clamping space formed by the positioning grooves and the roller grooves, and are fed as the rotating drum wheel rotates.

[0023] 1.2 Work Process (in conjunction with Appendix) Figures 1a-1e ) This device achieves alternating operation between "perforation mode" and "cleaning mode" by switching the state of the reflector: (1) Perforation mode (state 1): such as Figure 1a , 1b As shown, driver-1 drives the reflector to switch to "state 1"—if the reflector is disconnected from the optical path, the beam is transmitted directly along channel-1; if the reflector is inserted into the optical path, the beam is reflected by the reflector and then transmitted along channel-1. The laser is activated, and the emitted pulsed beam is transmitted through channel-1 to the perforating focusing lens, converging into a high-precision spot that acts on the surface of the thin rod. Simultaneously, the rotating drum wheel rotates under the drive mechanism, and the thin rod rotates 360° around its own axis under the combined action of the thin rod rolling and the rotating drum wheel, causing the beam spot to form a complete perforation on the surface of the thin rod, thus completing the perforation process.

[0024] (2) Cleaning mode (state 2): such as Figure 1c , 1dAs shown, when accumulated dust on the surface of the rotating drum affects processing accuracy, the system switches to "State 2"—if the design involves a reflector inserted into the optical path, the beam is reflected by the reflector and transmitted along channel-2; if the design involves a reflector detached from the optical path, the beam is transmitted directly along channel-2. The pulsed beam is transmitted through channel-2 to the cleaning focusing lens (cylindrical lens), where it is transformed into a linear beam. The linear direction of the linear beam is parallel to the central axis of the rotating drum. The drive mechanism of the rotating drum is activated, causing it to rotate uniformly around the central axis. The linear beam acts within the linear focusing range of the drum's circumferential surface. The accumulated dust rapidly vaporizes at high temperature and detaches from the drum surface, achieving drum cleaning (the cleaning effect is as shown in the image). Figure 1e (As shown).

[0025] Example 2: Laser cleaning device with sliding joint and reciprocating joint To expand the cleaning range and improve the comprehensiveness of drum cleaning, this embodiment adds a sliding pair and a reciprocating kinematic pair to the first embodiment. The specific structure and working process are as follows: 2.1 New component structure and connection (in conjunction with appendix) Figures 2a-2b ) The sliding pair is located on the outside of the rotating drum-shaped wheel, and its sliding direction is parallel to the central axis of the drum-shaped wheel. The sliding pair includes at least one sliding shaft, one sliding rod or sliding dovetail groove (see Embodiment 3 for specific types). The components of the cleaning focusing lens (including the focusing lens and the mounting base) are adapted to the sliding pair to achieve axial movement.

[0026] The reciprocating motion pair is driven by the driver-2, which is either a servo motor (rotary driver) or a linear cylinder (linear driver). Its output end is fixedly connected to the cleaning focusing lens assembly through a connector, and is used to drive the assembly to slide back and forth along the sliding pair. The stroke and speed of the reciprocating motion can be adjusted by the controller to adapt to different sizes of rotating drum wheels.

[0027] 2.2 Cleaning process (in conjunction with appendix) Figure 2c ) When in cleaning mode (state 2), the rotating drum rotates uniformly around its central axis. The pulsed beam is converted into a linear beam by the cleaning focusing lens and applied to the drum surface. Simultaneously, the driver-2 drives the reciprocating motion pair, causing the cleaning focusing lens and its components to slide back and forth along the sliding pair, allowing the linear focusing area to alternately sweep across different axial positions on the drum's circumferential surface. Compared to embodiment one, the linear beam in this embodiment can cover the entire axial length of the drum, ensuring that all areas of the drum's circumferential surface are cleaned, avoiding cleaning dead zones, and leaving no obvious dust residue on the drum surface after cleaning (e.g., ...). Figure 2c (As shown).

[0028] Example 3: Specific structural design of the sliding pair (in conjunction with the attached diagram) Figures 3a-3c ) This embodiment details three specific types of sliding pairs, all of which can achieve axial movement of the cleaning focusing lens assembly: (1) Sliding shaft and bearing matching type ( Figure 3a The sliding pair includes two parallel sliding shafts, both ends of which are fixed to the equipment frame by brackets. The mounting base for the cleaning focusing lens contains bearings, which are clearance-fitted with the sliding shafts, and the mating surfaces are coated with grease to reduce friction. When the reciprocating pair drives the mounting base, the bearings slide axially along the sliding shafts, thus moving the cleaning focusing lens.

[0029] (2) Matching type of sliding rod and lubrication block ( Figure 3b The sliding pair includes a sliding rod, which is fixed on the frame; the bottom of the mounting base for cleaning the focusing lens is equipped with a sliding lubricating block (made of polytetrafluoroethylene), which slides with the sliding rod. The lubricating block has an oil injection hole, which can be periodically injected with lubricating oil to ensure smooth sliding.

[0030] (3) Sliding dovetail groove type ( Figure 3c The sliding pair includes a dovetail groove guide rail fixed on the frame, and a boss adapted to the dovetail groove is provided at the bottom of the mounting base of the cleaning focusing lens. The mating surface between the boss and the dovetail groove is inclined, and the mating clearance can be adjusted by adjusting the bolts. It has the advantages of high guiding accuracy and good stability, and is suitable for high-precision cleaning scenarios.

[0031] Example 4: Specific structural design of reciprocating kinematic pairs (in conjunction with appendix) Figure 4 ) This embodiment provides two implementation methods for reciprocating kinematic pairs to adapt to different equipment space and accuracy requirements: (1) Rotary driver + lead screw structure: Driver-2 is a stepper motor (rotary driver), whose output shaft is connected to the lead screw through a coupling. The lead screw and the mounting base of the cleaning focusing lens assembly are engaged by a nut pair. When the stepper motor rotates forward and backward, it drives the lead screw to rotate, and the nut pair drives the mounting base to slide back and forth along the sliding pair. The advantage of this structure is that it has high transmission accuracy and can accurately control the sliding stroke.

[0032] (2) Linear actuator + tie rod structure Figure 4 The actuator-2 uses a linear cylinder (linear actuator), whose piston rod (pull rod) is fixedly connected to the mounting base of the cleaning focusing lens assembly. The air inlet and outlet of the linear cylinder are controlled by a solenoid valve. When the solenoid valve switches, the piston rod extends and retracts, causing the mounting base to slide back and forth along the sliding pair. The advantage of this structure is its fast response speed, making it suitable for high-frequency cleaning scenarios.

[0033] Example 5: Fine rod production equipment with drum cleaning function This embodiment integrates the aforementioned laser cleaning device into a fine rod production equipment, achieving integrated operation of fine rod piercing and drum cleaning. A clutch drive unit is added as the core component. The specific structure and working process are as follows: 5.1 Overall Structure of the Equipment The equipment includes a laser, a perforated focusing lens, a thin rod roller, a rotating drum-shaped wheel, a central shaft, a driver-3, a transmission pair (or driver-3 and driver-4), a laser cleaning device (any one of embodiments one to four), and a clutch drive unit arranged axially on the drum-shaped wheel; the clutch drive unit includes a driver assembly and a clutch, the rotating central shaft is fixedly connected to the inner flange, the outer flange is sleeved and fixedly connected to the outer side of the clutch, and the outer flange is fixedly connected to the end face of the rotating drum-shaped wheel (by bolts).

[0034] Among them, driver-3 is used to drive the thin rod roller and the central shaft (or drive the roller through driver-3 and drive the central shaft through driver-4) to realize the feeding and drum rotation when the thin rod is pierced; the driver assembly is used to drive the drum wheel to rotate independently during cleaning.

[0035] 5.2 Two Arrangement Methods for the Clutch Drive Unit (Combined with...) Figures 5a-5b , Figures 6a-6b ) (1) Arrangement method one ( Figures 5a-5b The clutch and drive assembly are both located on the outer side of one end of the drum-shaped wheel. The drive assembly is a hollow drive (such as a hollow shaft servo motor), which is fitted onto the inner flange of the central shaft, and its output end is fixedly connected to the clutch. The advantage of this arrangement is its compact structure and space-saving design.

[0036] (2) Arrangement Method Two Figures 6a-6c The clutch is located on the outside of the flange connection end of the drum wheel, and the drive assembly is located on the other end of the drum wheel. The drive assembly includes a drive-5 (such as a servo motor) and a transmission pair (such as a synchronous pulley set or a gear set). The output shaft of the drive-5 is connected to the other end face of the drum wheel through the transmission pair. This arrangement is suitable for scenarios where space is limited at one end of the drum wheel.

[0037] The first clutch is located at the flange connection at one end of the rotating drum wheel; The cleaning drive component is located at the other end of the rotating drum-shaped wheel, and includes a third drive and a transmission pair connecting the third drive and the rotating drum-shaped wheel. The transmission pair includes gear or belt drive, and a second clutch is provided between the transmission pair and the rotating drum-shaped wheel or between the transmission pair and the cleaning drive component. Figure 7c Figure 7d ).

[0038] The clutch drive unit is located at one end of the rotating drum-shaped wheel, and the clutch is an overrunning clutch; The central shaft is connected to the inner flange, and the overrunning clutch is set on the inner flange or the central shaft. When the central shaft rotates and the hollow drive is de-energized, the central shaft drives the input wheel of the overrunning clutch to rotate, which in turn drives the output wheel to rotate, and drives the rotating drum wheel to rotate. The overrunning clutch is equipped with a positioning ball or post between the input wheel and the output wheel. The positioning ball or post allows the rotating drum wheel to decelerate along with the central shaft when the central shaft drives the rotating drum wheel to rotate during the piercing operation. The cleaning drive component is a hollow actuator, which is mounted on the air valve connector. After the central shaft stops running, the hollow actuator rotor drives the overrunning clutch output wheel, which in turn drives the rotating drum wheel to rotate through the outer flange. Alternatively, the hollow actuator rotor can directly drive the rotating drum wheel to rotate.

[0039] The air valve is located between the central shaft and the rotating drum wheel, and the clutch drive unit is located at one end of the rotating drum wheel; The central shaft is connected to the inner flange. The input wheel of the clutch is sleeved on the central shaft or the inner flange. The central shaft drives the input wheel of the clutch to rotate, which in turn drives the output wheel to rotate, and drives the rotating drum wheel to rotate. The cleaning drive component is a hollow actuator, which is mounted on a hollow actuator mounting plate. The mounting plate is connected to the end wall of the air valve through the lead screw or connecting rod of the reciprocating actuator. When the central shaft stops running and cleaning is performed, the clutch is disengaged. The reciprocating drive drives the lead screw or connecting rod to move the mounting plate outward, which in turn drives the hollow drive outward until the wedge block on the outer side of the rotor engages with the wedge block on the inner side of the outer flange. At this time, the rotor of the hollow drive drives the outer flange to drive the rotating drum wheel to rotate.

[0040] An air valve is located between the central shaft and the rotating drum wheel, and a clutch drive unit is located at one end of the rotating drum wheel. The clutch is an overrunning clutch. The central shaft is connected to the inner flange. The input wheel of the overrunning clutch is sleeved on the central shaft or the inner flange. The central shaft drives the input wheel of the clutch to rotate, which in turn drives the output wheel to rotate through the wedge block or pawl of the overrunning clutch, thus driving the rotating drum wheel to rotate. The cleaning drive component is a hollow actuator, which is mounted on a hollow actuator mounting plate. The mounting plate is connected to the side wall of the air valve through the lead screw or connecting rod of the reciprocating actuator. When the central shaft stops running and is being cleaned, the reciprocating drive drives the lead screw or connecting rod to move the mounting plate outward, which in turn drives the hollow drive outward until the wedge block on the outer side of the rotor engages with the wedge block on the inner side of the outer flange. At this time, the rotor of the hollow drive drives the outer flange to rotate the rotating drum wheel in the same direction, and the output plate of the overrunning clutch disengages from the input plate.

[0041] The positioning ball or post is controlled by a mechanical spring to cut into the groove on the inner surface of the output wheel, or by an electric or pneumatic mechanism to cut into the groove on the inner surface of the output wheel.

[0042] 5.3 Integrated Working Process (1) Drilling operation: Driver-3 (or driver-3 and driver-4) is started, which drives the thin rod to rotate and drives the central shaft to rotate; the central shaft drives the clutch through the inner flange, at which time the clutch is locked with the outer flange (by electromagnetic attraction or mechanical clamping), thereby driving the rotating drum wheel to rotate; at the same time, the laser cleaning device switches to the drilling mode (state 1), the beam is focused on the surface of the thin rod through channel-1 and the drilling focusing lens, and the thin rod rotates 360° under the drive of the roller and the drum wheel to complete the drilling process.

[0043] (2) Cleaning operation: When the drum needs to be cleaned, stop the perforation operation, stop the driver-3 (or driver-3 and driver-4), and the central shaft is stationary; the controller controls the clutch to disengage (unlock the outer flange), and starts the driver assembly (arrangement mode 1: the hollow driver is powered on and rotates, driving the clutch and the outer flange to drive the drum to rotate; arrangement mode 2: driver-5 is started, driving the drum to rotate through the transmission pair); at the same time, the laser cleaning device switches to the cleaning mode (state 2), the linear beam acts on the surface of the drum, and with the reciprocating sliding of the focusing lens assembly (if a sliding pair and a reciprocating motion pair are added), the drum is fully cleaned; after cleaning, the clutch is locked back to the outer flange, and the equipment returns to the perforation standby state.

[0044] The following beneficial effects will occur after the implementation of this technical solution: The drum is not cleaned when the drilling equipment is running, to prevent leaked laser from accidentally burning the running rod and affecting product quality, and to avoid affecting the distribution of laser peak power. The clutch is set on the central shaft, which is simple and feasible, and does not change the original state of the drilling equipment. During periods when the drilling machine is not in operation, the drum cleaning is activated, allowing the laser to clean the entire circumference of the drum without causing any quality issues. Independent drum drive allows the drum to rotate independently of the original drive during periods when fine rod production is paused, thus achieving fully automatic cleaning; The reciprocating drive assembly enables cleaning of the axial surface area of ​​the drum with a smaller laser linear focusing length and higher linear energy, thus improving cleaning efficiency.

[0045] Using the laser from the original equipment for online drum cleaning can reduce personnel maintenance time, improve equipment efficiency, and reduce equipment investment. After adopting laser automatic cleaning, the drum cleaning only takes 2 to 3 minutes, and there is no need to remove the drum from the equipment. The cleaning efficiency is increased by nearly 20 times and the effective operating rate of the equipment is increased by 10% to 24%.

[0046] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A laser cleaning device for an online perforated drum wheel, comprising a laser, a perforation focusing lens, a thin rod roller, a rotating drum wheel, and a cleaning focusing lens, characterized in that, Also includes: A switchable reflector mechanism is located in the output optical path of the laser; Among them, the cleaning focusing lens is a cylindrical lens, which is used to transform the incident beam into a linear beam, the extension direction of which is parallel to the central axis of the rotating drum wheel in space. The switchable reflector mechanism includes a reflector driven by a first driver; in the first state, the reflector output light path corresponds to the perforated focusing lens to form a first light path; in the second state, the reflector output light path corresponds to the cleaning focusing lens to form a second light path.

2. The laser cleaning device for online perforated drums according to claim 1, characterized in that, It also includes an axial movement mechanism, which is located on the outside of the rotating drum wheel and is used to drive the cleaning focusing lens to reciprocate in a direction parallel to the central axis of the rotating drum wheel.

3. The laser cleaning device for online perforated drums according to claim 2, characterized in that, The axial movement mechanism includes: The sliding pair is parallel to the central axis of the rotating drum wheel, and the mounting assembly of the cleaning focusing lens is slidably connected to the sliding pair; A reciprocating motion pair, which is connected to the mounting assembly of the cleaning focusing lens, is used to drive the mounting assembly to reciprocate along the sliding pair.

4. The laser cleaning device for online perforated drums according to claim 3, characterized in that, The sliding pair can be any one of the following: a sliding shaft and a linear bearing fit structure, a sliding rod and a lubricating block fit structure, or a dovetail groove slider structure.

5. The laser cleaning device for online perforated drums according to claim 3, characterized in that, The reciprocating motion pair includes a second driver and a transmission mechanism driven by the second driver; when the second driver is a rotary driver, it works in conjunction with a lead screw and nut transmission mechanism to drive the mounting assembly; when the second driver is a linear driver, it directly drives the pull rod to move the mounting assembly.

6. A fine rod production equipment with a drum cleaning function, characterized in that, include: A laser cleaning apparatus for a central shaft and an online perforated drum as described in any one of claims 1 to 5; The clutch drive unit is located at the axial end of the rotating drum-shaped wheel; The clutch drive unit includes at least one clutch and a cleaning drive component; The central shaft is connected to the main drive unit for piercing, and selectively engages with the rotating drum wheel via a clutch, or drives the rotating drum wheel to rotate via an overrunning clutch to drive it to perform piercing operations. When the clutch is disengaged, the cleaning drive unit drives the rotating drum to rotate, or the cleaning drive unit drives the rotating drum to rotate and disengage from the central shaft via the overrunning clutch, so that the laser cleaning device of the online perforated drum can clean it.

7. The fine rod production equipment with drum cleaning function according to claim 6, characterized in that, The clutch drive unit is located at one end of the rotating drum-shaped wheel. The clutch can be driven by an electric coil, a pneumatic valve, or a mechanical drive. The central shaft connects to the inner flange, and the clutch is located on the inner flange or the central shaft and selectively engages with the outer flange that connects to the rotating drum wheel; The cleaning drive component is a hollow actuator, which is fitted onto a central shaft, inner flange, or air valve connector, and its output end is connected to an outer flange or rotating drum wheel.

8. The fine rod production equipment with drum cleaning function according to claim 6 or 7, characterized in that, The first clutch is located at the flange connection at one end of the rotating drum wheel; The cleaning drive component is located at the other end of the rotating drum wheel, and includes a third drive and a transmission pair connecting the third drive and the rotating drum wheel. The transmission pair includes gear or belt drive. The transmission pair is connected to the rotating drum wheel or a second clutch is provided between the transmission pair and the cleaning drive component.

9. The fine rod production equipment with drum cleaning function according to claim 6, characterized in that, The clutch drive unit is located at one end of the rotating drum-shaped wheel, and the clutch is an overrunning clutch; The central shaft is connected to the inner flange, and the overrunning clutch is set on the inner flange or the central shaft. When the central shaft rotates and the hollow drive is de-energized, the central shaft drives the input wheel of the overrunning clutch to rotate, which in turn drives the output wheel to rotate, and drives the rotating drum wheel to rotate. The overrunning clutch is further provided with a positioning ball or column between the input wheel and the output wheel. The positioning ball or column enables the rotating drum wheel to decelerate with the central shaft when the central shaft drives the rotating drum wheel to rotate for piercing operations. The cleaning drive component is a hollow actuator, which is mounted on the air valve connector. After the central shaft stops running, the hollow actuator rotor drives the overrunning clutch output wheel, which in turn drives the rotating drum wheel to rotate through the outer flange. Alternatively, the hollow actuator rotor can directly drive the rotating drum wheel to rotate.

10. The fine rod production equipment with drum cleaning function according to claim 6, characterized in that, It includes an air valve disposed between the central shaft and the rotating drum wheel, and the clutch drive unit is disposed at one end of the rotating drum wheel; The central shaft is connected to the inner flange. The input wheel of the clutch is sleeved on the central shaft or the inner flange. The central shaft drives the input wheel of the clutch to rotate, which in turn drives the output wheel to rotate, and drives the rotating drum wheel to rotate. The cleaning drive component is a hollow actuator, which is mounted on a hollow actuator mounting plate. The mounting plate is connected to the end wall of the air valve through the lead screw or connecting rod of the reciprocating actuator. When the central shaft stops running and cleaning is performed, the clutch is disengaged. The reciprocating drive drives the lead screw or connecting rod to move the mounting plate outward, which in turn drives the hollow drive outward until the wedge block on the outer side of the rotor engages with the wedge block on the inner side of the outer flange. At this time, the rotor of the hollow drive drives the outer flange to drive the rotating drum wheel to rotate.

11. The fine rod production equipment with drum cleaning function according to claim 6, characterized in that, It includes an air valve disposed between the central shaft and the rotating drum wheel, the clutch drive unit is disposed at one end of the rotating drum wheel, and the clutch is an overrunning clutch; The central shaft is connected to the inner flange. The input wheel of the overrunning clutch is sleeved on the central shaft or the inner flange. The central shaft drives the input wheel of the clutch to rotate, which in turn drives the output wheel to rotate through the wedge block or pawl of the overrunning clutch, thus driving the rotating drum wheel to rotate. The cleaning drive component is a hollow actuator, which is mounted on a hollow actuator mounting plate. The mounting plate is connected to the side wall of the air valve through the lead screw or connecting rod of the reciprocating actuator. When the central shaft stops running and is being cleaned, the reciprocating drive drives the lead screw or connecting rod to move the mounting plate outward, which in turn drives the hollow drive outward until the wedge block on the outer side of the rotor engages with the wedge block on the inner side of the outer flange. At this time, the rotor of the hollow drive drives the outer flange to rotate the rotating drum wheel in the same direction, and the output plate of the overrunning clutch disengages from the input plate.

12. The fine rod production equipment with drum cleaning function according to claim 9, characterized in that... The positioning ball or post is controlled by a mechanical spring to cut into the groove on the inner surface of the output wheel, or it is controlled by an electric or pneumatic mechanism to cut into the groove on the inner surface of the output wheel.

13. A control method for a laser cleaning apparatus using an online perforated drum as described in any one of claims 1 to 5, characterized in that, The method includes the following steps: The switchable mirror mechanism switches between two states to execute either of the two optical path switching logics. Logic 1 includes: When the switchable reflector mechanism is in the first state, the laser beam emitted by the laser is guided to the first optical path and focused by the perforated focusing lens to perform perforation processing on the thin rod that is driven to rotate by the thin rod roller and the rotating drum wheel. When the switchable reflector mechanism is switched to the second state, the laser beam emitted by the laser is guided to the second optical path and focused onto the circumferential surface of the rotating drum wheel through the cleaning focusing lens to clean the rotating drum wheel; Logic 2 includes: When the switchable reflector mechanism is in the first state, the laser beam emitted by the laser is guided to the second optical path and focused onto the circumferential surface of the rotating drum wheel through the cleaning focusing lens to clean the rotating drum wheel. When the switchable reflector mechanism is switched to the second state, the laser beam emitted by the laser is guided to the first optical path and focused by the perforated focusing lens to perform perforation processing on the thin rod that is driven to rotate by the thin rod roller and the rotating drum wheel.

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