Laser cutting machine with bed bar cleaning system and cleaning method

Abstract

The application discloses a laser cutting machine with a bed body toothed strip cleaning system and a cleaning method, and technical scheme points are as follows: the laser cutting machine comprises a bed body and a toothed strip, and further comprises a chain for supporting and driving the toothed strip, one end of the chain is located at a tail of the bed body and exposes a tail toothed strip from the bed body; a cleaning main machine is located at the tail of the bed body and moves back and forth along a length direction of the toothed strip; a cleaning disc set is installed on the cleaning main machine, and the cleaning disc set enters and exits the toothed strip in a mode of clamping the toothed strip to frictionally clean two side surfaces of the toothed strip; and a rotating speed of the cleaning disc set is mechanically related to a moving speed of the cleaning main machine, so that full-automatic cleaning of the toothed strip on the bed body is realized. Through the above structure, automatic conveying, positioning and cleaning can be realized without disassembling the toothed strip of the bed body, and the maintenance efficiency of the toothed strip of the large laser cutting machine is improved.

Description

Technical Field

[0001] This invention relates to a laser cutting machine, and more specifically, to a laser cutting machine and cleaning method with a bed toothed strip cleaning system. Background Technology

[0002] Existing large-format laser cutting equipment typically uses toothed strips spaced apart along the length of the cutting bed as the sheet metal support structure. During the laser cutting process, the continuous action of the high-energy laser beam on the metal sheet generates a large amount of high-temperature slag, oxide particles, and metal dust.

[0003] These impurities not only deposit on the top support area of ​​the toothed strip, but also adhere to the sidewalls of the toothed strip and the narrow grooves formed by adjacent teeth. The groove area, due to its confined space and continuously changing structure, is difficult to effectively penetrate using ordinary scraping, vibration, or planar friction methods, easily leading to the formation of hardened slag that accumulates over time.

[0004] For large-format laser cutting machines, the bed length is usually several meters or even longer, and there are many toothed strips. Current maintenance methods usually require stopping the machine and manually disassembling the toothed strips, and then cleaning them one by one. This is not only labor-intensive, but also requires repeated adjustments to the position of the toothed strips during the cleaning process, making it difficult to ensure that the cleaning degree of each toothed strip is consistent.

[0005] While some existing mechanical cleaning equipment can use brush wheels, vibration mechanisms, or impact structures to treat toothed strips, the following technical problems still exist: (1) The toothed strip lacks stable constraints during the cleaning process.

[0006] Since toothed racks are usually installed on the bed via chains or support structures, they are prone to vibration, swaying, or even bending and deformation when subjected to impacts or collisions. This causes changes in the positional relationship between the cleaning mechanism and the toothed rack, reducing the cleaning effect and potentially increasing the risk of the chain disengaging.

[0007] (2) Toothed strip contamination has a multi-layered composite structure, and it is difficult to remove it effectively by a single cleaning method.

[0008] Adhering impurities typically include loose surface dust, hardened slag in the middle layer, and residues deep within the tooth grooves. Relying solely on friction can easily prevent the hardened slag from detaching, while relying solely on impact can easily cause the toothed strip to deform under stress.

[0009] (3) Abnormal jamming may occur during continuous automatic cleaning.

[0010] When the cleaning mechanism encounters large-sized molten slag or locally hardened impurities, the cleaning load suddenly increases. Traditional equipment can usually only stop operating and wait for manual handling, and cannot automatically adjust the cleaning process according to the actual load.

[0011] Therefore, existing technologies still lack a laser cutting machine bed toothed strip cleaning system that can automatically feed, stably position, and effectively clean multiple areas of the toothed strip without disassembling it, and can automatically recover from abnormal blockages. Summary of the Invention

[0012] The primary objective of this invention is to provide a laser cutting machine with a bed toothed strip cleaning system, which enables automatic feeding, stable positioning, and effective cleaning of the toothed strip in multiple areas, and can automatically recover from abnormal blockages.

[0013] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A laser cutting machine with a toothed strip cleaning system includes a bed and a toothed strip, a chain for supporting and driving the toothed strip, one end of the chain being located at the tail of the bed and exposing the toothed strip at the tail end of the bed; it also includes: an outer frame disposed on the outer side of the tail of the bed, a cleaning host mounted on the outer frame, and a reciprocating mechanism for driving the cleaning host to move back and forth along the length of the toothed strip; the cleaning host includes four friction discs symmetrically arranged on both sides of the toothed strip, the distance between two opposing friction discs being kept constant, and the cleaning host is equipped with a follower component that drives the friction discs to rotate, so that the friction discs perform friction cleaning on both sides of the toothed strip during the movement with the cleaning host; the outer circumferential wall of the friction disc is fixed with cutting teeth for impacting and removing impurities, and the friction discs... The disc surface is equipped with multiple cleaning protrusions. The elastic cleaning protrusions are spaced apart along the circumference of the friction disc. During the rotation of the friction disc, the elastic cleaning protrusions enter the toothed groove area of ​​the toothed strip along with the rotating friction disc and remain extended in the toothed groove area. When passing the toothed part of the toothed strip, they are squeezed and retracted, thus forming a periodic telescopic impact motion. The cleaning host is equipped with a hot air blowing component that softens impurities towards the toothed strip. The cleaning host is equipped with a control system electrically connected to the reciprocating mechanism. The control system includes a function to detect the operating load of the reciprocating mechanism. When the detected load exceeds a preset safety value, the control system controls the reciprocating mechanism to drive the cleaning host back to the preset position and controls the hot air blowing component to heat the obstructed position. Then, the control system controls the cleaning host to start cleaning again.

[0014] Preferably, the follower component includes a meshing transmission rack and gear set. The gear set is installed on the cleaning host and is linked to the friction disc. When the cleaning host moves back and forth, the gear set rotates on the transmission rack and drives the cleaning disc set to rotate, so as to realize the lateral movement and active rotation of the cleaning disc set by a single power synchronously. When the cleaning host moves forward, the friction disc rotates forward; when the cleaning host moves in reverse, the friction disc rotates in reverse. The toothed rack moves to the cleaning station one by one with the chain, and the cleaning disc set moves back and forth to clean the toothed rack, realizing the automatic cleaning of the toothed rack on the bed.

[0015] Preferably, the distance 'a' between the friction disc surface and the toothed strip is 0.2-3 mm, and the four friction discs are arranged on the toothed strip in all directions to reduce the vibration and bending amplitude of the toothed strip after being subjected to force.

[0016] Preferably, the friction disc has multiple sets of cutting teeth, and the extension of the cutting teeth gradually decreases from the outer end face of the friction disc to the friction surface.

[0017] Preferably, the toothed strip is kept at an angle to the horizontal plane during cleaning, with the angle ranging from 15 to 60 degrees, and the teeth of the toothed strip are arranged with the teeth facing upwards.

[0018] Preferably, in the control system, the preset position is a retraction of one unit stroke, and the unit stroke ensures that the hot air blowing component is oriented towards the obstructed impurities when it retracts to the preset position; and when the cleaning host starts to retract to the preset position, the friction disc needs to rotate in the opposite direction to disengage.

[0019] Preferably, the outer support is equipped with a lifting component to adjust the height of the cleaning component; when the cleaning component is not in use, the entire outer support is lower than the upper surface of the bed.

[0020] Preferably, the system includes a control motherboard. The control system includes a load detection module electrically connected to the control motherboard. The load detection module is used to detect the operating load of the reciprocating mechanism drive motor and send the detection result to the control motherboard. The control motherboard compares the operating load with a preset safety threshold. When the operating load exceeds the preset safety threshold, the control motherboard controls the reciprocating mechanism to stop moving forward and drives the cleaning host to retract to a preset position. During the retraction process, the control motherboard controls the hot air assembly to continuously heat the obstructed position and, after retraction, re-drives the cleaning host to enter the obstructed position for cleaning again. The control motherboard records the number of consecutive retractions. When the number of consecutive retractions reaches a preset number and the operating load still exceeds the preset safety threshold, the cleaning stops and an abnormal alarm message is output.

[0021] Preferably, the control motherboard has preset settings for the chain rotation angle, the single reciprocating time of the cleaning host, and the number of cleaning cycles. During the cleaning process, the control motherboard first controls the power motor to drive the chain to rotate at a preset angle, moving the toothed strip to be cleaned to the cleaning station. Then, it controls the cleaning host to reciprocate. After the cleaning host completes one cleaning action, the control motherboard again controls the power motor to drive the chain to rotate, moving the next toothed strip into the cleaning station, thereby achieving continuous automatic cleaning of multiple toothed strips. The control motherboard is electrically connected to a position detection module, which includes a toothed strip positioning sensor located at the cleaning station and a stroke detection element located at the end of the cleaning host's movement path. The toothed strip positioning sensor is used to detect whether the toothed strip has moved to the cleaning position. The stroke detection element is used to detect the reciprocating movement position of the cleaning host. The control motherboard controls the power motor and the cleaning drive module to start and stop according to the detection signals.

[0022] The second objective of this invention is to provide a method for cleaning the toothed rack of a bed, which enables automatic conveying, stable positioning, and effective cleaning of multiple areas of the toothed rack, and can automatically restore cleaning in case of abnormal blockage.

[0023] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A method for cleaning a toothed rack in a bed includes a cleaning system and the following steps: Step 1, rack positioning: The cleaning host is positioned outside one end of the rack to be cleaned along its length, and the cleaning disc assembly is separated from the rack. The drive chain moves, allowing the rack to enter the cleaning station, and the chain stops. Step 2, forward cleaning: The cleaning host is driven to move along the length of the rack, allowing the cleaning disc assembly to enter from one end of the rack. Two hard friction discs in the cleaning disc assembly are located on opposite sides of the rack's thickness. During the movement of the cleaning host, the gear assembly rotates along the transmission rack, driving the two hard friction discs to rotate. As the two hard friction discs move along the length of the rack, they rub and impact the two sides of the rack for cleaning. Step 3a, load detection: The control board monitors the operating load of the reciprocating mechanism drive motor in real time. When the detected load is less than a preset safety value, the cleaning host continues cleaning along the rack's length. Step 3b, abnormal retraction cleaning: When the detected load is less than a preset safety value, the cleaning host continues cleaning along the rack's length. When the load exceeds the preset safety value, the control motherboard stops the reciprocating mechanism and drives the cleaning host to retreat to the preset position. During the retreat, the hot air blowing component continuously blows hot air to the obstructed position to heat and soften the impurities. Then, the cleaning host is driven back to the obstructed position to perform impact cutting and friction cleaning on the impurities again. Step 4, Reverse Cleaning: When the cleaning host moves to the other end of the toothed strip to be cleaned, the cleaning host is driven to move in the reverse direction, so that the cleaning disc group returns along the toothed strip to be cleaned and performs reverse cleaning on the toothed strip to be cleaned. Step 5, Cleaning Disc Group Exit: After completing the preset number of cleanings, the cleaning host returns to the initial position and the cleaning disc group is completely removed from the end of the toothed strip to be cleaned. Step 6, Toothed Strip Switching: After confirming that the cleaning disc group and the toothed strip to be cleaned are separated, the drive chain moves by a preset unit amount, so that the toothed strip that has been cleaned leaves the cleaning station and the next toothed strip to be cleaned enters the cleaning station. Step 7, Cyclic Cleaning: Repeat steps 1 to 5 until the preset number of toothed strips have been cleaned.

[0024] In summary, the present invention has at least one of the following beneficial effects: The four friction discs maintain a small and fixed positioning distance from the toothed strip, effectively reducing excessive bending deformation of the toothed strip during the cleaning process by limiting and constraining the impact area. Existing floating vibratory cleaning equipment lacks effective positioning constraints on the toothed strip upon impact, making it prone to significant bending deformation and affecting operational stability. The four friction discs in this design play a significant role, especially suitable for structures where the toothed strip is fixedly mounted on the chain. When the toothed strip is subjected to strong vibration or impact loads, the friction discs can limit its movement in multiple directions, preventing excessive displacement or deformation. This reduces the risk of chain disengagement and chain slippage due to deformation of the toothed strip, improving overall operational reliability.

[0025] The combined effect of the lead screw structure and the friction disc is twofold: firstly, a single power source enables the friction disc to move laterally and rotate on its own; secondly, in obstructed working conditions, the friction disc automatically reverses when it retracts, allowing for the smooth separation of the friction disc from impurities.

[0026] The hot air blowing component has the following effects in both dynamic and static operating conditions: First, when the cleaning process is smooth, the hot air dynamically softens smaller impurities as the friction disc advances, making the cleaning smooth; Second, when the cleaning is obstructed, the friction disc retracts, and the hot air statically heats the obstructed impurities, accelerating the softening of the obstructed impurities and improving the cleaning performance.

[0027] Regarding the cutting teeth, they are used to impact and cut impurities. Their design, which reduces the amount of extension from the outside to the inside, comes from the layered and multi-stage cutting design of the impurities. The cutting teeth with a larger extension prioritize cutting and impacting the smaller impurities at the outer end. Since the cutting amount at the outer end is smaller, it is easier to cut. Each cut is a force impact on the entire impurity, making it easier for the impurity to loosen from the toothed strip. Through multiple staged cuts by multiple cutting teeth, the impurities are more easily detached.

[0028] The cleaning protrusions and toothed strips are designed to remove contaminants from the inside of the tooth grooves, which are difficult to reach with ordinary planar friction. The elastic cleaning protrusions primarily impact and clean the slag remaining in the toothed grooves. The toothed grooves change regularly along their length. When the cleaning host moves at a constant speed, the cleaning protrusions form a periodic expansion and contraction motion in the toothed groove area, creating an adaptive pulse cleaning effect similar to tooth-driven cleaning. This subjectes the brittle slag attached to the tooth groove area to alternating impact loads, increasing the probability of deep contaminant removal.

[0029] This invention transforms the toothed strip cleaning process from traditional manual disassembly and maintenance to online automatic maintenance through the coordinated operation of a toothed strip circulating conveying structure, a clamping rotary cleaning structure, a tooth groove adaptive cleaning structure, and an abnormal load recovery control structure. Especially when facing complex working conditions such as hardened slag formed by long-term cutting, deep tooth groove residues, and local high resistance jamming, this invention can achieve continuous and reliable cleaning through graded cutting, elastic impact, stable constraint, and heat-assisted recovery mechanisms, thereby improving the maintenance efficiency and operational stability of the toothed strips of large laser cutting machine beds. Attached Figure Description

[0030] Figure 1 This is a schematic diagram showing the positional relationship between the bed and the cleaning system in the embodiment.

[0031] Figure 2 This is a side view of the cleaning unit and the toothed strip to be cleaned, taken in cross-section in the embodiment.

[0032] Figure 3 This is a diagram showing the positional relationship between the cleaning disc assembly and the toothed strip to be cleaned in the embodiment.

[0033] Figure 4 This is a schematic diagram of the reciprocating mechanism structure in the embodiment.

[0034] Figure 5 This is a cross-sectional view of the cleaning protrusion on the hard friction disc above in the embodiment.

[0035] Figure 6 This is a schematic diagram showing the positional change of the cleaning protrusion when it contacts the toothed strip in the embodiment.

[0036] Figure 7 This is a schematic diagram showing the change in height relative to the bed after the external support extends and retracts in the embodiment.

[0037] Figure 8 This is a schematic diagram showing the position of the cleaning protrusions in the friction disc in the embodiment.

[0038] Figure 9 This is a schematic diagram showing the state of the hot air blowing assembly and the friction disc cleaning the toothed strip in the embodiment.

[0039] Figure 10 This is a schematic diagram of the control system modules in the embodiment.

[0040] Figure 11 This is a schematic diagram of the control flow in the embodiment.

[0041] In the picture: 11. Laser head; 12. Crossbeam; 21. Bed; 22. Toothed rack; 23. Chain; 24. Power motor; 3. Clean the main unit; 31. Cleaning disc assembly; 310. Friction disc; 311. Cleaning protrusion; 312. Spring; 313. Cutting teeth; 32. Follower assembly; 321. Transmission rack; 322. Gear set; 3221. Driven gear No. 1; 3222. Driven gear No. 2; 3223. Driven gear No. 3 33. Reciprocating mechanism; 4. External support frame; 5. Lifting assembly; 6. Control motherboard; 7. Positioning sensor; 8. Position sensor; 9. Hot air blowing assembly. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the accompanying drawings.

[0043] Example 1: A laser cutting machine with a bed toothed strip cleaning system.

[0044] Reference Figure 1 The laser cutting machine includes a bed 21, a crossbeam 12, and a laser head 11. The crossbeam 12 is movably mounted on the bed 21, and the laser head 11 is mounted on the crossbeam 12 and is used to laser cut the sheet metal placed on the bed 21.

[0045] The bed 21 is a frame structure extending along its length, and the bed 21 is provided with a plurality of toothed strips 22 for supporting the sheet metal to be processed. The plurality of toothed strips 22 are arranged at equal intervals along the length of the bed 21, and each toothed strip 22 is elongated and has a plurality of continuously arranged teeth on its upper part to reduce the contact area between the sheet metal and the toothed strip 22.

[0046] Reference Figure 1 and Figure 2 The bed 21 is equipped with two sets of chains 23, which are spaced apart along the length of the toothed bar 22 and run synchronously. The two ends of the toothed bar 22 are fixed to the two sets of chains 23 respectively, and the two sets of chains 23 jointly support the toothed bar 22 and drive the toothed bar 22 to move along the circulation path.

[0047] Specifically, the side of the chain 23 is provided with a support plate for fixing the toothed strips 22. The ends of the toothed strips 22 can be fixed to the corresponding support plate by means of threaded connection or welding. The two sets of chains 23 are coaxially driven and are connected to the drive motor 24. The drive motor 24 is used to drive the two sets of chains 23 to run synchronously, so that the multiple toothed strips 22 installed on the chains 23 move sequentially.

[0048] The main body of the chain 23 is located inside the bed 21, and one end of the chain 23 extends to the tail of the bed 21, forming a turning section at the tail of the bed 21. When the chain 23 drives the toothed strip 22 to move to the tail of the bed 21, the toothed strip 22 moves out of the bed 21 along with the chain 23, so that the toothed strip 22 located at the cleaning station is at least partially exposed outside the bed 21.

[0049] With the above structure, the toothed bars 22 on the bed 21 can be transported one by one to the tail of the bed 21 for cleaning using the chain 23, without the need to manually remove the toothed bars 22 from the bed 21.

[0050] The drive motor 24 can be a servo motor or a stepper motor to precisely control the moving distance and stopping position of the chain 23. The drive motor 24 is electrically connected to the control motherboard 6, which can output start signals, stop signals, rotation angle signals, and speed adjustment signals to the drive motor 24.

[0051] Reference Figures 1 to 4 An outer support 4 is provided on the outer side of the tail end of the bed 21. The outer support 4 can be fixed to the legs of the bed 21 or the tail end frame of the bed 21. The outer support 4 is provided with a cleaning host 3 and a reciprocating mechanism 33 that drives the cleaning host 3 to move back and forth along the length direction of the toothed rack 22.

[0052] The reciprocating mechanism 33 can be a lead screw linear drive mechanism, including a reciprocating drive motor, a lead screw, and a movable base cooperating with the lead screw. The cleaning unit 3 is mounted on the movable base. When the reciprocating drive motor drives the lead screw to rotate, the movable base drives the cleaning unit 3 to move along the length direction of the rack 22. In other embodiments, the reciprocating mechanism 33 can also be a synchronous belt linear mechanism, a gear and rack linear mechanism, a linear motor, or other mechanisms capable of driving the cleaning unit 3 to reciprocate.

[0053] The cleaning unit 3 has an initial clearance position located outside one end of the toothed rack 22 along its length. In the initial clearance position, the cleaning disc assembly 31 on the cleaning unit 3 is completely separated from the toothed rack 22, allowing the chain 23 to drive the toothed rack 22 to move. When the chain 23 stops running and the toothed rack 22 to be cleaned reaches the cleaning station, the reciprocating mechanism 33 drives the cleaning unit 3 to move from the initial clearance position toward the toothed rack 22, causing the cleaning disc assembly 31 to enter from one end of the toothed rack 22.

[0054] Reference Figure 2 , Figure 3 and Figure 5 The cleaning unit 3 is equipped with two sets of cleaning discs 31, which are arranged back and forth along the length of the toothed strip 22. Each set of cleaning discs 31 includes two opposing friction discs 310, which are located on both sides of the toothed strip 22 in the thickness direction and form a cleaning gap for the toothed strip 22 to pass through.

[0055] In this embodiment, the two friction discs 310 are located above and below the inclined toothed strip 22, respectively. The two sets of cleaning discs 31 include a total of four friction discs 310, which are symmetrically arranged front to back and sides, thereby forming multi-point constraints on the toothed strip 22 during the cleaning process.

[0056] The distance between the two opposing friction discs 310 is greater than the thickness of the toothed strip 22. The distance between the disc surface of the friction disc 310 and the corresponding side surface of the toothed strip 22 is a. The distance a can be set from 0.2 mm to 3 mm. In this embodiment, it is preferably 0.5 mm.

[0057] By controlling the distance between the friction disc 310 and the toothed strip 22 within the above range, the toothed strip 22 can smoothly enter the cleaning gap, and at the same time, the cutting teeth 313 on the outer periphery of the friction disc 310 and the cleaning protrusions 311 on the disc surface can impact and clean the slag protruding from the side of the toothed strip 22.

[0058] The edges of the two friction discs 310 facing each other are chamfered. When the cleaning disc assembly 31 enters from the end of the toothed strip 22, the chamfer can guide the toothed strip 22 and reduce the probability of the end of the toothed strip 22 getting stuck with the friction disc 310.

[0059] Two sets of cleaning discs 31 are arranged back and forth along the length of the toothed strip 22. On the one hand, when the cleaning host 3 moves once, the two sets of cleaning discs 31 can clean the same area one after the other; on the other hand, the two sets of cleaning discs 31 constrain the toothed strip 22 being cleaned from the front and rear positions respectively, which can reduce the vibration, swaying and bending of the toothed strip 22 under friction and impact.

[0060] Reference Figure 8 The friction disk 310 is a hard disc structure with multiple cutting teeth 313 on its outer periphery for impacting and removing impurities. The multiple cutting teeth 313 are arranged at intervals along the circumference of the friction disk 310.

[0061] The cutting teeth 313 can be arranged in multiple groups along the axial direction of the friction disk 310, and the protrusion of the cutting teeth 313 gradually decreases from the outer end face of the friction disk 310 toward the friction surface of the friction disk 310. When the cleaning disk group 31 enters the toothed strip 22 with impurities attached, the outer cutting teeth 313 with larger protrusions preferentially contact the impurities with larger protrusions, and perform initial impact and cutting on the impurities; as the friction disk 310 further enters, the cutting teeth 313 with smaller protrusions continue to perform multi-stage impact and cutting on the remaining impurities, thereby reducing the single impact load and improving the cleaning effect.

[0062] Reference Figure 6 and Figure 8The friction disc 310 also has a plurality of cleaning protrusions 311 on its surface. The plurality of cleaning protrusions 311 are arranged at intervals along the circumference of the friction disc 310 and can elastically expand and contract relative to the surface of the friction disc 310. In this embodiment, the cleaning protrusions 311 surround a circumference, while in other embodiments, the plurality of cleaning protrusions 311 may surround a plurality of concentric circumferences.

[0063] Specifically, the friction disc 310 has mounting holes corresponding to the cleaning protrusion 311, and the cleaning protrusion 311 is slidably mounted in the mounting holes. A spring 312 is provided between the cleaning protrusion 311 and the friction disc 310, and the spring 312 is used to apply a spring force toward the toothed strip 22 to the cleaning protrusion 311.

[0064] The end of the cleaning protrusion 311 facing the toothed strip 22 is set as an arc end. When the cleaning protrusion 311 rotates with the friction disc 310 to the tooth groove area of ​​the toothed strip 22, the cleaning protrusion 311 is kept extended and enters the tooth groove under the action of the spring 312, impacting, scraping and disturbing the impurities in the tooth groove and near the tooth root.

[0065] When the cleaning protrusion 311 rotates with the friction disc 310 to the toothed solid area of ​​the toothed rack 22, the teeth squeeze the cleaning protrusion 311, causing the cleaning protrusion 311 to retract into the mounting hole and compress the spring 312. When the cleaning protrusion 311 leaves the toothed solid area and re-enters the toothed groove area, the spring 312 pushes the cleaning protrusion 311 to extend again.

[0066] As a result, the cleaning protrusion 311 rotates with the friction disc 310, forming a periodic extension and elastic impact motion between the teeth and the tooth groove, thereby cleaning the inside of the tooth groove that is difficult to reach with ordinary disc surface friction.

[0067] Reference Figure 2 The cleaning unit 3 is also equipped with a follower component 32. The follower component 32 is used to convert the linear movement of the cleaning unit 3 along the length direction of the toothed rack 22 into the rotational movement of the friction disk 310.

[0068] The follower assembly 32 includes a transmission rack 321 and a gear set 322. The transmission rack 321 is fixedly mounted on the outer bracket 4 along the length of the toothed rack 22, and the gear set 322 is mounted on the cleaning host 3 and meshes with the transmission rack 321.

[0069] The gear set 322 includes a first driven gear 3221, two second driven gears 3222, and two third driven gears 3223. The first driven gear 3221 meshes with the transmission rack 321, the two second driven gears 3222 mesh with the first driven gear 3221 respectively, the two third driven gears 3223 mesh with the corresponding second driven gears 3222 respectively, and the third driven gears 3223 are coaxially fixed with the corresponding friction disc 310.

[0070] When the cleaning host 3 moves along the transmission rack 321, the first driven wheel 3221 rotates under the action of the transmission rack 321 due to the fixed setting of the transmission rack 321, and drives the friction disk 310 to rotate in sequence through the second driven wheel 3222 and the third driven wheel 3223.

[0071] When the cleaning host 3 moves forward along the toothed rack 22, the friction disk 310 rotates in the first rotation direction; when the cleaning host 3 moves backward along the toothed rack 22, the gear set 322 rotates in the reverse direction, causing the friction disk 310 to rotate in the opposite direction to the first rotation direction.

[0072] Therefore, the rotational speed of the friction disc 310 and the moving speed of the cleaning host 3 are mechanically linked through the transmission rack 321 and the gear set 322. When the moving speed of the cleaning host 3 increases, the rotational speed of the friction disc 310 increases accordingly; when the moving speed of the cleaning host 3 decreases, the rotational speed of the friction disc 310 decreases accordingly.

[0073] With this follower structure, the cleaning host 3 can move synchronously and rotate actively by the reciprocating mechanism 33, which provides the moving power for the cleaning host 3. There is no need to set up an independent rotary drive motor for the friction disc 310.

[0074] Reference Figure 1 and Figure 2 The toothed strip 22 is inclined relative to the horizontal plane at the cleaning station, and the teeth of the toothed strip 22 face obliquely upward. The included angle between the toothed strip 22 and the horizontal plane can be set from 15° to 60°, and is preferably 45° in this embodiment.

[0075] The chain 23 passes over the sprocket from top to bottom at the tail of the bed 21, causing the toothed strip 22 to gradually tilt as it passes the tail of the bed 21. During the cleaning process, slag, dust, and oxide particles that fall off the toothed strip 22 can fall downwards or slide off the tooth groove under the action of gravity, reducing the probability of the fallen impurities re-entering the tooth groove.

[0076] Reference Figure 7 A lifting assembly 5 is provided below the outer support 4. The lifting assembly 5 is used to drive the outer support 4 and the cleaning host 3 installed on the outer support 4 to lift as a whole.

[0077] When cleaning the toothed strip 22, the lifting component 5 drives the outer support 4 to rise, so that the cleaning host 3 and the cleaning disc assembly 31 reach the preset cleaning height corresponding to the cleaning station.

[0078] When the laser cutting machine is feeding sheet metal or performing laser cutting operations, the lifting component 5 drives the outer support 4 to descend, so that the cleaning host 3 and the cleaning disc assembly 31 are lower than the upper surface of the bed 21, thereby preventing the cleaning system from affecting sheet metal feeding, crossbeam 12 movement, or laser cutting operations.

[0079] Reference Figure 9 The cleaning host 3 is also equipped with a hot air blowing assembly 9 facing the toothed strip 22. There are two hot air blowing assemblies 9, which are located in front of the cleaning disc assembly 31 and are symmetrically arranged on both sides of the cleaning disc assembly 31, and move synchronously with the cleaning host 3.

[0080] The hot air blowing assembly 9 is used to blow hot air onto the surface of the toothed strip 22. The hot air can preheat the slag and impurities in front of the friction disc 310, and concentrate the heating on the hard impurities at the obstructed position of the cleaning disc assembly 31, so as to reduce the hardness or adhesion strength of the impurities.

[0081] The hot air blowing assembly 9 may include a heater, an air supply component, an air duct, and an air outlet. The heater is used to heat the gas flowing through the air duct, and the air supply component is used to blow the hot air through the air outlet onto the toothed strip 22. The hot air blowing assembly 9 is electrically connected to the control main board 6, which controls the start-up, stop, and heating time.

[0082] Reference Figure 10 This embodiment also includes a control system. The control system includes a control motherboard 6, a load detection module, a position detection module, a chain drive module, a reciprocating drive module, a hot air blowing control module, an alarm module, and a power supply module.

[0083] The control motherboard 6 serves as the control core of the cleaning system, including a microprocessor unit, a storage unit, input interfaces, and output interfaces.

[0084] The storage unit is used to store parameters such as the number of toothed racks, the pitch between adjacent toothed racks, the chain travel distance, the number of times the cleaning host can reciprocate, the cleaning time, the safe load threshold, the back-off distance, and the maximum number of repeated cleaning cycles.

[0085] The chain drive module is connected to the power motor 24 and is used to control the power motor 24 to start, stop, brake, and rotate a preset angle according to the instructions output by the control motherboard 6.

[0086] The reciprocating drive module is connected to the reciprocating drive motor of the reciprocating mechanism 33 and is used to control the forward movement, reverse movement and stop of the cleaning host 3.

[0087] The position detection module includes a positioning sensor 7 and a position sensor 8. The positioning sensor 7 is located near the cleaning station and is used to detect whether the toothed strip 22 to be cleaned has reached the cleaning station.

[0088] The positioning sensor 7 can be a contact sensor. When the toothed rack 22 to be cleaned moves to the cleaning station, the end of the toothed rack 22 triggers the positioning sensor 7, which sends a positioning signal to the control main board 6. After receiving the positioning signal, the control main board 6 controls the drive motor 24 to stop and keeps the chain 23 in a locked state.

[0089] The position sensor 8 includes a starting position detection element disposed at the starting end of the reciprocating mechanism 33 and an ending position detection element disposed at the ending end of the reciprocating mechanism 33. The starting position detection element is used to detect whether the cleaning host 3 has reached the initial avoidance position, and the ending position detection element is used to detect whether the cleaning host 3 has moved to the other end of the toothed rack 22.

[0090] When the termination position detection element detects the cleaning host 3, the control motherboard 6 controls the reciprocating mechanism 33 to reverse direction, causing the cleaning host 3 to move in the opposite direction; when the starting position detection element detects the cleaning host 3, the control motherboard 6 can control the reciprocating mechanism 33 to stop or reverse direction again.

[0091] The load detection module is connected to the reciprocating drive motor or its driver of the reciprocating mechanism 33, and is used to detect the operating load of the cleaning host 3 as it moves along the toothed rack 22. The load detection module can obtain the current operating load by detecting at least one of the following parameters: the operating current of the reciprocating drive motor, the output torque, the driver feedback load rate, or the motor power.

[0092] During normal cleanup, the control motherboard 6 continuously collects the operating load output by the load detection module and compares the operating load with a preset safety threshold.

[0093] When the detected operating load does not exceed the preset safety threshold, the control motherboard 6 controls the reciprocating mechanism 33 to continue driving the cleaning host 3 to move in the current direction.

[0094] When there are large or hard slag, weld beads, or other foreign objects on the surface of the toothed strip 22, the friction disc 310 is obstructed, increasing the operating load of the reciprocating drive motor. When the operating load continuously exceeds the preset safety threshold, the control main board 6 determines that the cleaning disc assembly 31 is in an abnormally obstructed state.

[0095] The main control board 6 first controls the reciprocating mechanism 33 to stop moving forward, and then controls the reciprocating mechanism 33 to run in reverse, causing the cleaning host 3 to retract by a preset unit stroke. This preset unit stroke causes the friction disc 310 to exit the obstructed area and directs the airflow direction of the hot air blowing assembly 9 toward the obstructed impurities.

[0096] When the cleaning host 3 retracts, the follower component 32 drives the friction disk 310 to rotate in the opposite direction, so that the friction disk 310 exits the obstructed area in the reverse rotation state, thereby reducing the possibility of the friction disk 310 getting stuck with impurities.

[0097] During the retraction of the cleaning host 3 or after retraction to the preset position, the control motherboard 6 activates the hot air blowing component 9, so that the hot airflow continues to act on the obstructed position to heat and soften the hard impurities.

[0098] After the preset heating time is reached, the control motherboard 6 restarts the reciprocating mechanism 33 to run in the forward direction, causing the cleaning host 3 to re-enter the obstructed area. The friction disc 310 then performs impact, cutting, and friction cleaning on the preheated and softened impurities that have already been impacted previously.

[0099] The control motherboard 6 records the number of consecutive backtracking attempts at the same obstructed location. When the operating load returns to a safe range after another cleanup, the control motherboard 6 clears the corresponding abnormal count and continues the normal cleanup procedure.

[0100] When the number of consecutive retractions reaches the preset maximum and the operating load still exceeds the preset safety threshold, the control motherboard 6 controls the reciprocating mechanism 33 to stop running, shuts down the hot air blowing component 9, and outputs abnormal alarm information through the alarm module to prompt the operator to handle the situation.

[0101] In this embodiment, the toothed strip 22 is circulated and conveyed by the chain 23. The cleaning host 3 is driven to move along the length of the toothed strip 22 by the reciprocating mechanism 33. The linear movement of the cleaning host 3 is converted into the rotational movement of the friction disc 310 by the transmission rack 321 and the gear set 322. The cutting teeth 313 and the cleaning protrusions 311 of the friction disc 310 clean the sides, teeth and grooves of the toothed strip 22.

[0102] Meanwhile, the control system can achieve automatic positioning of the toothed rack 22, automatic reciprocating of the cleaning host 3, abnormal load detection, automatic retraction, heat-assisted softening, repeated cleaning, and abnormal alarm, thereby completing the continuous automatic cleaning of the bed toothed rack 22 without disassembling the toothed rack 22.

[0103] This cleaning system allows you to set a start time for automated cleaning. It can clean once a night between 12 and 2 a.m. or once every seven days when there is no work requirement, thus keeping the toothed strip 22 clean. Due to the convenience of cleaning, regular automatic cleaning prevents the toothed strip 22 from accumulating too much impurities.

[0104] Example 2: This example provides a method for cleaning the toothed strips of a laser cutting machine bed. The method uses the laser cutting machine with a toothed strip cleaning system described in Example 1, referring to... Figure 11 The process includes the following steps.

[0105] Step 1: Clean up system initialization The control motherboard 6 receives the cleaning start command and detects the working status of the power motor 24, reciprocating mechanism 33, positioning sensor 7, position sensor 8, load detection module, hot air blowing assembly 9 and alarm module.

[0106] The power motor 24 drives two sets of chains 23 to run synchronously. The chains 23 drive multiple toothed bars 22 installed on them to move along the circulating conveying path, so that the toothed bars 22 located on the bed 21 move sequentially to the tail of the bed 21.

[0107] The chain 23 rotates from top to bottom at the tail of the bed 21. When the toothed bar 22 passes the sprocket at the tail of the bed 21, it gradually moves out of the bed 21 with the chain 23 and forms a state of inclination relative to the horizontal plane.

[0108] In this embodiment, the cleaning station is set at a position where the angle between the toothed strip 22 and the horizontal plane is 45°, and the teeth of the toothed strip 22 face obliquely upward.

[0109] Step 2: Toothed bar positioning and chain locking When the toothed strip 22 to be cleaned moves to the cleaning station, the end of the toothed strip 22 triggers the positioning sensor 7.

[0110] Positioning sensor 7 sends a toothed rack positioning signal to control main board 6. Upon receiving the toothed rack positioning signal, control main board 6 stops the drive motor 24 and brakes or locks the drive motor 24, keeping the chain 23 and the toothed rack 22 located at the cleaning station station station still during the cleaning process.

[0111] Step 2: Clean the main unit 3 and put it in place.

[0112] The control board 6 only allows the reciprocating mechanism 33 to start after simultaneously receiving the toothed rack positioning signal and the power motor 24 stop or lock signal.

[0113] When the running time of the power motor 24 exceeds the preset positioning time, and the positioning sensor 7 still does not output the toothed rack positioning signal, the control motherboard 6 controls the power motor 24 to stop and outputs positioning abnormality information through the alarm module.

[0114] The control motherboard 6 determines whether the cleaning host 3 is in the initial avoidance position by using the position sensor 8 set at the starting end of the reciprocating mechanism 33.

[0115] When the cleaning host 3 is not in the initial avoidance position, the control motherboard 6 controls the reciprocating mechanism 33 to drive the cleaning host 3 to move toward the starting end until the position sensor 8 at the starting end outputs a reset signal.

[0116] When the cleaning host 3 is in the initial avoidance position, the cleaning disc assembly 31 is located outside one end of the toothed strip 22 along its length and is completely separated from the toothed strip 22 on the chain 23, so that the chain 23 can run freely.

[0117] When the system is equipped with lifting component 5, the control motherboard 6 also controls the lifting component 5 to drive the outer bracket 4 to rise, so that the cleaning host 3 and the cleaning disc assembly 31 reach the preset cleaning height.

[0118] After the control motherboard 6 confirms that the cleaning host 3 is in the initial avoidance position, it releases the locking state of the power motor 24 and controls the power motor 24 to start.

[0119] Step 4: Clean up disk group import.

[0120] The mainboard 6 controls the reciprocating mechanism 33 to run in the forward direction, so that the cleaning host 3 moves from the initial avoidance position toward the toothed strip 22 to be cleaned.

[0121] The cleaning disc assembly 31 moves along the length of the toothed strip 22 with the cleaning host 3 and gradually enters the toothed strip 22 from one end of the toothed strip 22 to be cleaned.

[0122] During the import process, the chamfers of the edges of the two opposing friction discs 310 first contact the ends of the toothed strip 22 and guide the toothed strip 22 into the cleaning gap formed between the two friction discs 310.

[0123] Two friction discs 310 are located on both sides of the toothed strip 22 in the thickness direction, and begin to impact and clean the slag protruding from both sides of the toothed strip 22.

[0124] Step 5: Forward Cleanup and Real-time Load Monitoring The reciprocating mechanism 33 continues to drive the cleaning host 3 to move forward along the length direction of the toothed strip 22.

[0125] Since the transmission rack 321 is fixedly mounted on the outer bracket 4, the first driven wheel 3221 mounted on the cleaning host 3 rolls along the transmission rack 321 when it moves with the cleaning host 3.

[0126] Driven wheel 3221 drives driven wheel 3222 and driven wheel 3223 to rotate in sequence, and driven wheel 3223 drives the corresponding friction disc 310 to rotate.

[0127] Thus, the friction disc 310 simultaneously performs translational motion along the length of the toothed strip 22 and rotational motion around its own axis. The friction discs 310 located on both sides of the toothed strip 22 rub, impact, and cut the two sides of the toothed strip 22, causing the molten metal slag, oxide particles, and dust adhering to the sides of the toothed strip 22 to fall off.

[0128] The cutting teeth on the outer periphery of the friction disc 310 perform multi-stage impact and removal on impurities protruding from the surface of the toothed strip 22.

[0129] The cleaning protrusion 311 rotates with the friction disc 310. When the cleaning protrusion 311 passes through the toothed solid area of ​​the toothed strip 22, the cleaning protrusion 311 is squeezed by the teeth and retracts into the friction disc 310; when the cleaning protrusion 311 passes through the tooth groove area between adjacent teeth, the cleaning protrusion 311 extends outward under the action of the spring 312 and elastically impacts and scrapes away impurities near the tooth groove and tooth root.

[0130] Impurities that fall off the toothed strip 22 fall downwards under the tilted posture of the toothed strip 22 and its own gravity, leaving the surface and groove area of ​​the toothed strip 22.

[0131] During the forward movement of the cleaning host 3, the control motherboard 6 collects the operating load output by the load detection module in real time and compares the operating load with the preset safety threshold.

[0132] The system compares the operating load with the safety threshold for judgment.

[0133] When the operating load does not exceed the preset safety threshold, proceed to step 6: control the motherboard 6 to control the reciprocating mechanism 33 to continue driving the cleaning host 3 to move forward.

[0134] When the operating load exceeds the preset safety threshold, the load processing procedure is initiated, as follows.

[0135] Regarding the load protection process, steps 9-14.

[0136] When the load detection module detects that the running load exceeds the preset safety threshold, it enters the load processing flow.

[0137] Furthermore, if the state exceeds the preset safety threshold and continues for a preset judgment time, the control motherboard 6 determines that the cleanup disk group 31 is abnormally blocked at the current position.

[0138] Step 9: Control the main board 6 to stop the reciprocating mechanism 33 from running forward.

[0139] Step 10: Then control the reciprocating mechanism 33 to run in reverse, so that the cleaning host 3 retracts one preset unit stroke along the length direction of the toothed strip 22.

[0140] When the cleaning host 3 retracts, the gear set 322 rotates in the opposite direction under the action of the transmission rack 321, and drives the friction disk 310 to rotate in the opposite direction, so that the friction disk 310 exits the obstructed position in the reverse rotation state.

[0141] Step 11: Accumulate the number of consecutive reversals at the same blocked position, and compare the accumulated number of reversals with the set number of reversals.

[0142] If the number of rollbacks is less than the set number of rollbacks, proceed to step 12.

[0143] When the number of rollbacks equals the set number of rollbacks, the exception cleanup process begins.

[0144] Step 12: During the retraction of the cleaning host 3, the control motherboard 6 starts the hot air blowing component 9, so that the hot air blowing component 9 continuously blows hot air toward the obstructed position to heat and soften the hard impurities attached to the toothed strip 22.

[0145] Step 13: After the cleaning host 3 returns to the preset position, the hot air blowing component 9 continues to heat the obstructed position for a preset time. After the preset heating time is reached, the control motherboard 6 restarts the reciprocating mechanism 33 to run in the forward direction, causing the cleaning host 3 to re-enter the obstructed position.

[0146] Step 14: The friction disc 310 performs impact, cutting and friction cleaning on the impurities that have been softened by heat and have been impacted before.

[0147] The control motherboard 6 re-detects the operating load. When the operating load returns to within the preset safety threshold, the control motherboard 6 clears the consecutive backtracking count at the current obstructed position and controls the cleaning host 3 to continue normal cleaning.

[0148] When the operating load still exceeds the preset safety threshold, the control motherboard 6 repeatedly performs the rollback, heating, and re-entry actions.

[0149] When the number of consecutive retractions to the same obstructed location reaches the preset maximum number, and the operating load still exceeds the preset safety threshold, the abnormal cleanup process is initiated, proceeding with steps 15-18 as follows: Step 15: Control main board 6 to stop reciprocating mechanism 33; Step 16: Turn off hot air blowing component 9; Step 17: Output abnormal alarm information through alarm module; Step 18: Wait for manual handling.

[0150] Step 7: Endpoint detection and reverse cleanup When the cleaning host 3 moves to the other end of the toothed strip 22 to be cleaned, the position sensor 8 located at the end of the reciprocating mechanism 33 detects the cleaning host 3 and sends an end signal to the control motherboard 6.

[0151] The control motherboard 6 controls the reciprocating mechanism 33 to stop forward operation according to the endpoint signal, and controls the reciprocating mechanism 33 to run in reverse, so that the cleaning host 3 returns along the length direction of the toothed strip 22.

[0152] During the reverse movement of the cleaning host 3, the gear set 322 rotates in the reverse direction under the action of the transmission rack 321, and drives the friction disk 310 to rotate in the reverse direction.

[0153] The counter-rotating friction disc 310 once again rubs, impacts, and cuts the two sides, teeth, and groove areas of the toothed strip 22.

[0154] The cleaning unit 3 moves from one end of the toothed strip 22 to the other for forward cleaning, and then returns from the other end for reverse cleaning, together forming a cleaning cycle.

[0155] Step 8: Clean up the disk group and exit. After the cleaning host 3 returns to the starting end of the toothed bar 22, the reciprocating mechanism 33 continues to drive the cleaning host 3 to move toward the initial avoidance position, so that the cleaning disc assembly 31 gradually exits from the end of the toothed bar 22.

[0156] When the position sensor 8 at the starting end detects that the cleaning host 3 has returned to the initial avoidance position, the position sensor 8 sends a reset signal to the control motherboard 6.

[0157] After receiving the reset signal, the control motherboard 6 controls the reciprocating mechanism 33 to stop and confirms that the cleaning disk assembly 31 has been completely separated from the toothed bar 22.

[0158] Before the control board 6 receives a reset signal from the cleaning host 3, the power motor 24 remains locked and the chain 23 cannot run, so as to avoid interference between the moving toothed strip 22 and the cleaning disc assembly 31 that has not yet been withdrawn.

[0159] Step 10: Switch to the next toothed strip The control motherboard 6 accumulates the number of toothed strips 22 that have been cleaned and compares the number of cleaned strips with the preset total number of toothed strips.

[0160] IV. Regarding the rack and pinion switching process, when the number of racks 22 that have been cleaned is less than the preset total number of racks, the rack and pinion switching process is entered. The main board 6 releases the locked state of the power motor 24 and controls the power motor 24 to drive the chain 23 to move by a preset unit amount.

[0161] The preset unit quantity can correspond to the installation pitch of two adjacent toothed strips 22 on the chain 23, so that the toothed strip 22 that has been cleaned leaves the cleaning station and the next toothed strip 22 to be cleaned enters the cleaning station.

[0162] After the next toothed strip 22 to be cleaned triggers the positioning sensor 7, the control motherboard 6 re-executes steps 3 to 10.

[0163] End: Cleanup completed and relocation avoided. When the number of toothed strips 22 that have been cleaned reaches the preset total number of toothed strips, the control motherboard 6 controls the power motor 24 and the reciprocating mechanism 33 to stop, and outputs a cleaning completion signal through the alarm module or human-machine interaction device.

[0164] When the system is equipped with lifting component 5, after confirming that the cleaning host 3 is in the initial avoidance position, the control motherboard 6 controls the lifting component 5 to drive the outer bracket 4 to descend, so that the cleaning host 3 and the cleaning disc assembly 31 are lowered to a position below the upper surface of the bed 21.

[0165] After the descent is complete, the laser cutting machine can load the sheet material or resume laser cutting operations.

[0166] Using the above method, multiple toothed bars 22 on the bed 21 can be continuously and automatically cleaned in the following order: "toothed bar conveying - positioning and locking - cleaning disc assembly introduction - forward cleaning - load detection - abnormal retraction and thermal auxiliary cleaning - reverse cleaning - cleaning disc assembly withdrawal - toothed bar switching".

[0167] The proposed method clearly includes steps such as toothed strip positioning, forward cleaning, load detection, abnormal rollback, reverse cleaning, cleaning disk exit, and switching to the next toothed strip.

[0168] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A laser cutting machine with a bed-mounted toothed strip cleaning system, comprising a bed and a toothed strip, and a chain for supporting and driving the toothed strip, characterized in that, One end of the chain is located at the tail of the bed, with the toothed bar at the tail protruding from the bed frame; It also includes: an outer frame located on the outside of the tail of the bed, a cleaning unit mounted on the outer frame, and a reciprocating mechanism that drives the cleaning unit to move back and forth along the length of the toothed rack; The cleaning unit includes four friction discs symmetrically arranged on both sides of the toothed strip. The distance between two opposing friction discs remains constant. The cleaning unit is equipped with a follower component that drives the friction discs to rotate, so that the friction discs rub and clean both sides of the toothed strip as they move with the cleaning unit. The outer circumferential wall of the friction disc is fixed with cutting teeth for impacting and removing impurities. The surface of the friction disc is provided with multiple cleaning protrusions. The elastic cleaning protrusions are spaced apart along the circumference of the friction disc. During the rotation of the friction disc, the elastic cleaning protrusions enter the tooth groove area of ​​the toothed strip with the rotating friction disc and remain extended in the tooth groove area. When they pass through the toothed part of the toothed strip, they are squeezed and retracted, thus forming a periodic telescopic impact motion. The cleaning unit is equipped with a hot air blowing component that blows towards the toothed bars to soften impurities; The cleaning unit is equipped with a control system electrically connected to the reciprocating mechanism. The control system includes a system for detecting the operating load of the reciprocating mechanism. When the detected load exceeds a preset safety value, the system controls the reciprocating mechanism to drive the cleaning unit back to a preset position and controls the hot air blowing component to heat the obstructed position. Then, the system controls the cleaning unit to clean again.

2. The laser cutting machine with a bed toothed strip cleaning system according to claim 1, characterized in that: The follower component includes a meshing transmission rack and gear set. The gear set is installed on the cleaning host and is linked to the friction disc. When the cleaning host moves back and forth, the gear set rotates on the transmission rack and drives the cleaning disc to rotate, so as to realize the lateral movement and active rotation of the cleaning disc by a single power synchronization. When the cleaning unit moves forward, the friction disc rotates in the forward direction; When the cleaning unit moves in the reverse direction, the friction disc rotates in the reverse direction; The toothed strips move one by one to the cleaning station along with the chain, and the cleaning disc moves back and forth to clean the toothed strips, realizing automatic cleaning of the toothed strips on the machine bed.

3. The laser cutting machine with a bed toothed strip cleaning system according to claim 1, characterized in that: The distance 'a' between the friction disc surface and the toothed strip is 0.2-3 mm. Four friction discs are arranged on the toothed strip in all directions to reduce the vibration and bending amplitude of the toothed strip after being subjected to force.

4. The laser cutting machine with a bed toothed strip cleaning system according to claim 1, characterized in that: The friction disc has multiple sets of cutting teeth, and the extension of the cutting teeth gradually decreases from the outer end face of the friction disc to the friction surface.

5. The laser cutting machine with a bed toothed strip cleaning system according to claim 1, characterized in that: When cleaning, the toothed strip should be kept at an angle to the horizontal plane, ranging from 15 to 60 degrees, with the teeth of the toothed strip facing upwards.

6. The laser cutting machine with a bed toothed strip cleaning system according to claim 1, characterized in that: In the control system, the preset position is to move back one unit stroke, and the unit stroke ensures that the hot air blowing component moves towards the obstructed impurities when it moves back to the preset position; Furthermore, when the cleaning unit begins to retract to the preset position, the friction disc needs to rotate in the opposite direction to disengage.

7. The laser cutting machine with a bed toothed strip cleaning system according to claim 1, characterized in that: The external support frame is equipped with a lifting component, which adjusts the height of the cleaning component; When the cleaning components are not in use, the outer support frame is lower than the upper surface of the bed frame.

8. The laser cutting machine with a bed toothed strip cleaning system according to claim 1, characterized in that: The system includes a control motherboard, and the control system includes a load detection module electrically connected to the control motherboard. The load detection module is used to detect the operating load of the reciprocating mechanism drive motor and send the detection result to the control motherboard. The control motherboard compares the operating load with a preset safety threshold. When the operating load exceeds the preset safety threshold, it controls the reciprocating mechanism to stop moving forward and drives the cleaning host to retract to a preset position. The control board controls the hot air assembly to continuously heat the obstructed area during the retraction of the cleaning host, and after the retraction is completed, it re-drives the cleaning host to enter the obstructed area for cleaning again. The control board records the number of consecutive rollbacks. When the number of consecutive rollbacks reaches a preset number and the operating load still exceeds a preset safety threshold, the cleanup stops and an abnormal alarm message is output.

9. The laser cutting machine with a bed toothed strip cleaning system according to claim 8, characterized in that: The control motherboard has preset settings for the chain rotation angle, the single reciprocating time of the cleaning host, and the number of cleaning cycles. During the cleaning process, the control board first controls the power motor to drive the chain to rotate at a preset angle, so that the toothed strip to be cleaned moves to the cleaning station; Then, the cleaning host is controlled to move back and forth. After the cleaning host completes one cleaning action, the control board controls the power motor to drive the chain to rotate, so that the next toothed strip enters the cleaning station, so as to realize the continuous automatic cleaning of multiple toothed strips. The control motherboard is electrically connected to a position detection module, which includes a toothed rack positioning sensor set at the cleaning station and a stroke detection element set at the end of the moving path of the cleaning host. The toothed rack positioning sensor is used to detect whether the toothed rack has moved to the cleaning position; The stroke detection element is used to detect the reciprocating movement position of the cleaning unit; The control board controls the start and stop of the power motor and the cleaning drive module based on the detection signal.

10. A method for cleaning the toothed strips of a bed, characterized in that: Including the cleaning system of any one of claims 1-9, the specific steps are as follows: Step 1, Toothed Strip Positioning: Position the cleaning unit outside one end of the toothed strip to be cleaned along its length, separating the cleaning disc assembly from the toothed strip; move the drive chain to bring the toothed strip into the cleaning station and stop the chain. Step 2, Forward Cleaning: Drive the cleaning host to move along the length of the toothed strip to be cleaned, so that the cleaning disc assembly enters from one end of the toothed strip to be cleaned. The two hard friction discs in the cleaning disc assembly are located on both sides of the thickness direction of the toothed strip to be cleaned. During the movement of the cleaning unit, the gear set rotates along the transmission rack and drives the two hard friction discs to rotate. As the two hard friction discs move along the length of the rack to be cleaned, they rub and impact the two sides of the rack to be cleaned. Step 3a, Load detection: The control motherboard monitors the operating load of the reciprocating mechanism drive motor in real time. When the detected load is less than the preset safety value, the cleaning host continues to clean along the length of the toothed strip; Step 3b, Abnormal rollback cleanup: When the detected load exceeds the preset safety value The mainboard controls the reciprocating mechanism to stop moving forward. Drive the cleaning unit back to the preset position; During the retraction process, the hot air blowing component is controlled to continuously blow hot air to the obstructed position to heat and soften the impurities; Then the cleaning unit is driven back to the obstructed position to remove the impurities through impact cutting and friction cleaning. Step 4, Reverse Cleaning: When the cleaning unit moves to the other end of the toothed strip to be cleaned, drive the cleaning unit to move in reverse, so that the cleaning disc assembly returns along the toothed strip to be cleaned and performs reverse cleaning on the toothed strip; Step 5: Cleaning disc assembly retraction: After completing the preset number of cleaning cycles, return the cleaning unit to its initial position and completely retract the cleaning disc assembly from the end of the toothed strip to be cleaned; Step 6, Toothed Strip Switching: After confirming that the cleaning disc assembly and the toothed strip to be cleaned are separated, the drive chain moves by a preset unit amount, so that the toothed strip that has been cleaned leaves the cleaning station and the next toothed strip to be cleaned enters the cleaning station. Step 7, Cyclic Cleaning: Repeat steps 1 to 5 until the preset number of toothed strips have been cleaned.

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