Laser direct engraving machine with multiple paths of light

Abstract

The invention discloses a multi-path light laser direct engraving machine, and relates to the field of laser engraving, the multi-path light laser direct engraving machine comprises a laser engraving head and an assembling buckle frame fixedly assembled on the periphery of a transmitting end of the laser engraving head, a butt joint disc is assembled in the assembling buckle frame in a sliding mode, and the assembling buckle frame and the butt joint disc are limited through magnetic attraction; the laser engraving device comprises a laser engraving head and a butt joint disc, the end, away from the laser engraving head, of the butt joint disc fixedly communicates with a gas conveying pipe, the laser path of the laser engraving head coincides with the axis of the gas conveying pipe, and a branch pipe is further fixedly arranged on the outer wall of the gas conveying pipe. Dust deposited in the embossment is effectively sucked and removed, the effect of removing dust while carving is achieved, and it is avoided that a large amount of dust exists on the surface of wood and in the carved portion after carving is completed.

Description

Technical Field

[0001] The invention relates to the field of laser engraving, in particular to a multi-path light laser direct engraving machine. Background Art

[0002] Laser engraving uses a laser generator to generate laser light and refracts the laser light onto the surface of the material being processed. The unnecessary parts of the material surface are instantly melted or vaporized under the irradiation of the laser, thus forming the desired pattern.

[0003] Laser engraving technology can be used to engrave patterns on the surface of metal, plastic, rock, wood and other materials. The essence of laser engraving is that the laser sintered the surface of the object to be engraved at high temperature. Therefore, smoke and fine powder will be generated on the surface of the object to be engraved during the laser engraving process. Therefore, when performing laser engraving, it is necessary to use a smoke extractor to extract, filter and discharge the smoke to avoid pollution to the environment of the processing space. The laser is used to perform relief engraving on metal, plastic, rock, wood and other substrates. Compared with other processes, the depth of engraving is deeper, which can highlight the 3D graphic effect. However, when performing the relief engraving process, a large amount of smoke will be generated (especially for plastic, rock and wood substrates), and a large amount of dust will remain in the concave structure of the deep engraved pattern and the outer circle of the pattern. The existing smoke extractor can only prevent the smoke from spreading randomly, but cannot remove the dust generated by the engraving. Therefore, after the engraving is completed, when the engraved object is picked up, a large amount of dust will fall and float away randomly. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-path laser direct engraving machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-path laser direct engraving machine, comprising: a laser engraving head and an assembly buckle frame fixedly mounted on the periphery of the emitting end of the laser engraving head, and a docking plate is slidably mounted inside the assembly buckle frame, and the assembly buckle frame and the docking plate are limited by magnetic attraction, and an air pipe is fixedly connected to one end of the docking plate away from the laser engraving head, and the laser path of the laser engraving head coincides with the axis of the air pipe, and a branch pipe is also fixedly arranged on the outer wall of the air pipe;

[0006] It also includes: a suction unit for sucking dust and smoke generated by the engraved part, and the suction unit is distributed outside the air delivery pipe;

[0007] The auxiliary slag removal unit is used to improve the dust removal effect on the engraved part, and the auxiliary slag removal unit is located between the branch pipe and the suction unit.

[0008] Preferably, the suction unit includes a frame hoisted at the bottom of the laser engraving head, and two suction pipes are distributed on the outside of the frame, the two suction pipes are symmetrically centered on the air supply pipe, the upper and lower ends of the suction pipe are respectively an elbow and a right-angled portion, the right-angled end of each suction pipe is fixedly connected to a flaring frame, and the open ports of the two flaring frames are both facing the exposed end of the air supply pipe, the interior of the frame is hollow, and the top of the frame is fixedly connected to two symmetrically distributed docking tubes, the elbows of the two suction pipes extend into the interiors of the two docking tubes respectively, and the side walls of the frame are fixedly connected to a negative pressure pipe, the negative pressure pipe and the air supply pipe are vertically distributed, the frame is located between the air supply pipe and the negative pressure pipe, and the docking portion between the negative pressure pipe and the frame is at the center of the frame, the end of the negative pressure pipe away from the frame is equipped with a suction fan, the suction is a negative pressure fan commonly used on the market, and a dust isolation component is also provided inside the frame.

[0009] Preferably, the dust isolation component includes two symmetrically distributed annular closed belts slidably mounted inside the frame, and a filter belt is fixedly mounted between the two annular closed belts, and a supporting bearing plate is slidably mounted on the inner side of each annular closed belt, and several of the bearing plates are mounted inside the frame, and the connection portion between the negative pressure pipe and the frame is located in the inner circle space of the filter belt. The outside of the frame is also provided with a transmission component for driving the annular closed belt, and a cleaning component for cleaning the dust adsorbed on the surface of the filter belt. The annular closed belt is also made of a flexible material, similar to the material of a synchronous toothed belt. The filter belt is cyclically moved by the two annular closed belts, and the filter belt can filter smoke and block dust. Assembly grooves are also provided at both ends of the interior of the frame, and an isolation plate is elastically rotated by a torsion spring and a latch, and the isolation plate is inclined against the surface of the filter belt. Through the action of the two isolation plates, it can be more effectively ensured that the negative pressure pipe can exhaust the suction pipe to the greatest extent.

[0010] Preferably, the cleaning assembly includes a collection frame fixedly arranged at the bottom of the frame, and the collection frame is communicated with the frame, the bottom of the collection frame is also magnetically equipped with a magnetic bottom cover, and the magnetic bottom cover can facilitate the staff to disassemble and assemble it later, the collection frame is internally rotatably embedded with an optical axis, and the optical axis and the gas pipe are vertically distributed, the side wall of the collection frame is fixedly provided with a plurality of right-angled curved rods equidistantly distributed in a straight line, and the right-angled ends of the right-angled curved rods face the frame, the outer surface of the optical axis is fixedly provided with a sleeve with the same number of rings as the right-angled curved rods, and the sleeves A first protrusion is fixedly provided on the outer surface of the first convex block, a connecting disk is fixedly provided at the right-angle end of each of the right-angle curved rods, and a sleeve column is axially slidably sleeved on the outer surface of the connecting disk, the top of the sleeve column is movably contacted with the outer surface of the filter belt, the top of the sleeve column is closed, and a second spring is fixedly provided between the end of the connecting disk away from the right-angle curved rod and the sleeve column, and a second protrusion is also fixedly provided on the outer wall of the sleeve column, and a motor is fixedly mounted on the upper end surface of the frame, and the output end of the motor and one end of the optical axis are assembled through a synchronous gear belt group transmission.

[0011] Preferably, the transmission assembly includes a notch opened on an end face of the frame away from the air pipe, and the notch is blocked and closed by the annular sealing band. Since the annular sealing band can shield the notch, a large amount of air will not leak into the interior of the frame through the notch. One of the annular sealing bands close to the notch is provided with a plurality of equally spaced slots on an end face away from the filter belt. The external rotating frame of the frame is provided with a positioning shaft, and a turntable is fixedly mounted on the outer surface of the positioning shaft, and a plurality of shift blocks equidistantly distributed in a circumference and movably engaged with the slots are fixedly mounted on the outer surface of the turntable. A worm gear is also fixedly mounted on the outer surface of the positioning shaft, and an optical axis is meshingly assembled on the outer side of the worm gear, and the optical axis is fixedly mounted on the outside of the optical axis.

[0012] Preferably, the auxiliary slag discharge unit includes a spherical valve core fixedly arranged on the end of the positioning shaft away from the worm gear, and the outer surface of the spherical valve core is rotatably sleeved with a ball valve sleeve, the ball valve sleeve is relatively fixed to the positions of the laser engraving head and the frame, the end of the branch pipe away from the gas supply pipe is fixedly docked with the top of the ball valve sleeve, and the side wall of the ball valve sleeve is also fixedly connected with an injection pipe, a right-angled through groove is provided inside the spherical valve core, and two ports of the right-angled through groove are respectively docked with the branch pipe and the injection pipe, an air pump is connected to the end of the injection pipe away from the ball valve sleeve, the air pump can inject high-pressure gas into the interior of the injection pipe, and a plastic container is also sleeved on the outside of the injection pipe between the air pump and the ball valve sleeve, the plastic container is also interconnected with the injection pipe, and the plastic container can deform after being pressurized.

[0013] Preferably, a plurality of first springs equidistantly distributed in a circle are fixedly arranged between the outer surface of the elbow portion of the suction pipe and the inner wall of the docking tube, and a flexible corrugated sheet is also fixedly arranged between the outer surface of the elbow portion of the suction pipe and the inner wall of the docking tube, and the flexible corrugated sheet is located below the first spring. A vibrating component for knocking the two suction pipes is also arranged between the turntable and the frame, and under the action of the first spring, the frame and the suction pipe are elastically connected.

[0014] Preferably, the vibration component includes two supporting plates mounted on the frame near one end face of the suction pipe, each of the supporting plates is rotatably mounted on an end away from the frame, and a second gear is fixedly mounted on the bottom of the rotating column, a first gear is fixedly mounted on the lower end face of the turntable, a transmission toothed belt is jointly transmitted between the two second gears and one first gear, a rotating rod is also rotatably inserted inside each of the supporting plates, and a transmission gear is fixedly mounted on the upper end face of the rotating rod, a knocking block for knocking the suction pipe is fixedly mounted on the outer wall of the transmission gear, and a toothless gear movably meshed with the transmission gear is fixedly mounted on the upper end face of the rotating column, a blocking block is fixedly mounted on the lower end face of the supporting plate, the blocking blocks are distributed on the outer side of the rotating rod, and a third spring in an annular shape is fixedly mounted between the bottom outer wall of the rotating rod and the blocking block, the toothless gear can drive the transmission gear to deflect by a certain angle and then release it, and at the moment of release, the knocking block can knock on the surface of the suction pipe under the action of the compressed third spring.

[0015] Preferably, the laser engraving head comprises a housing, and a direct engraving machine mainboard, a frequency-hopping RF driver, a laser generator, a reflector, an acousto-optic modulator, and a focusing lens installed inside the housing.

[0016] Preferably, the focusing lens is located at the emission port of the laser engraving head, that is, to ensure that the laser beam emitted from the laser engraving head can be located at the axial position of the gas transmission pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention can effectively remove dust deposited in the relief when performing relief carving on the substrate through the suction unit and the auxiliary slag removal unit, thereby achieving the effect of cleaning while carving, and avoiding the presence of a large amount of dust on the surface of the wood and the carved part after the carving is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the laser engraving head of the present invention;

[0020] Figure 2This is a schematic diagram of the frame position distribution structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the suction pipe and the expansion frame structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the internal structure of the framework of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the position relationship between the frame and the negative pressure tube of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0025] Figure 7 It is a schematic diagram of the worm wheel and worm structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the shift block and the slot hole of the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure of the third spring, the toothless gear and the knocking block of the present invention;

[0028] Fig.10 This is a schematic diagram of the internal structure of the spherical valve housing of the present invention;

[0029] Fig.11 The figure is a schematic diagram of the internal principle structure of the laser engraving head of the present invention.

[0030] In the figure: 1, laser engraving head; 2, frame; 3, gas pipe; 4, suction pipe; 5, expansion frame; 6, assembly buckle frame; 7, docking plate; 8, branch pipe; 9, collection frame; 10, magnetic bottom cover; 11, motor; 12, docking tube; 13, first spring; 14, flexible corrugated sheet; 15, negative pressure pipe; 16, filter belt; 17, carrier plate; 18, annular sealing belt; 19, assembly groove; 20, isolation plate; 21, optical axis; 22, collar; 23, first protrusion; 24, right-angle curved rod; 2 5. Connecting plate; 26. Sleeve column; 27. Second spring; 28. Second protrusion; 29. ​​Worm; 30. Worm wheel; 31. First gear; 32. Support plate; 33. Second gear; 34. Transmission belt; 35. Turntable; 36. Shift block; 37. Slot hole; 38. Turn rod; 39. Third spring; 40. Stop block; 41. Transmission gear; 42. Toothless gear; 43. Knocking block; 44. Positioning shaft; 45. Ball valve sleeve; 46. Ball valve core; 47. Air injection pipe; 48. Right-angle through groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1-Figure 8 and Fig.10 The multi-path laser direct engraving machine shown in the figure comprises: a laser engraving head 1 and an assembly buckle frame 6 fixedly assembled on the periphery of the emission end of the laser engraving head 1, and a docking plate 7 is slidably assembled inside the assembly buckle frame 6, and the assembly buckle frame 6 and the docking plate 7 are limited by magnetic attraction, and an end of the docking plate 7 away from the laser engraving head 1 is fixedly connected with an air delivery pipe 3, and the laser path of the laser engraving head 1 coincides with the axis of the air delivery pipe 3, and a branch pipe 8 is also fixedly arranged on the outer wall of the air delivery pipe 3;

[0033] It also includes: a suction unit for sucking dust and smoke generated by the engraved part, and the suction unit is distributed outside the air delivery pipe 3;

[0034] The auxiliary slag removal unit is used to improve the dust removal effect on the engraved part. The auxiliary slag removal unit is located between the branch pipe 8 and the suction unit.

[0035] The suction unit includes a frame 2 hoisted at the bottom of the laser engraving head 1, and two suction pipes 4 are distributed on the outside of the frame 2. The two suction pipes 4 are symmetrically centered with the gas pipe 3. The upper and lower ends of the suction pipes 4 are elbows and right angles, respectively. The right angle end of each suction pipe 4 is fixedly connected to a flaring frame 5, and the open ports of the two flaring frames 5 are facing the exposed end of the gas pipe 3. The interior of the frame 2 is hollow, and the top of the frame 2 is fixedly connected to two symmetrically distributed docking tubes. 12, the elbows of the two suction pipes 4 extend into the interior of the two docking tubes 12 respectively, and the side wall of the frame 2 is fixedly connected with a negative pressure pipe 15, the negative pressure pipe 15 and the gas pipe 3 are vertically distributed, the frame 2 is located between the gas pipe 3 and the negative pressure pipe 15, and the docking part of the negative pressure pipe 15 and the frame 2 is at the center of the frame 2, the end of the negative pressure pipe 15 away from the frame 2 is equipped with a suction fan, the suction is a negative pressure fan commonly used on the market, and the interior of the frame 2 is also provided with a dust isolation component.

[0036] The dust isolation component includes two symmetrically distributed annular closed belts 18 slidably mounted inside the frame 2, and a filter belt 16 is fixedly mounted between the two annular closed belts 18. A supporting bearing plate 17 is slidably mounted on the inner side of each annular closed belt 18. Several bearing plates 17 are mounted inside the frame 2. The connection between the negative pressure pipe 15 and the frame 2 is located in the inner circle space of the filter belt 16. The outside of the frame 2 is also provided with a transmission component that drives the annular closed belt 18 and a transmission component that drives the dust adsorbed on the surface of the filter belt 16. The cleaning and exhaust components have a cleaning function, and the annular closed belt 18 is also made of a flexible material, similar to the material of a synchronous toothed belt. The filter belt 16 is moved in a cycle by two annular closed belts 18. The filter belt 16 can filter smoke and block dust. Assembly grooves 19 are also provided at both ends of the interior of the frame 2, and an isolation plate 20 is provided inside the assembly groove 19 through elastic rotation of a torsion spring and a latch. The isolation plate 20 is inclined against the surface of the filter belt 16. Through the action of the two isolation plates 20, it can more effectively ensure that the negative pressure tube 15 can evacuate the suction tube 4 to the greatest extent.

[0037] The cleaning assembly includes a collection frame 9 fixedly arranged at the bottom of the frame 2, and the collection frame 9 is connected to the frame 2. The bottom of the collection frame 9 is also magnetically equipped with a magnetic bottom cover 10, which can facilitate the staff to disassemble and assemble it later. The collection frame 9 is internally rotatably embedded with an optical axis 21, and the optical axis 21 is vertically distributed with the gas pipe 3. The side wall of the collection frame 9 is fixedly provided with a plurality of right-angled curved rods 24 distributed in a straight line and at equal distances, and the right-angled ends of the right-angled curved rods 24 face the frame 2. The outer surface of the optical axis 21 is fixedly provided with a sleeve 22 with the same number as the right-angled curved rod 24, and the outer surface of the sleeve 22 is fixedly provided with a plurality of sleeves 22 with the same number as the right-angled curved rods 24. A first protrusion 23 is provided, and a connecting disk 25 is fixedly provided at the right-angle end of each right-angle curved rod 24, and a sleeve column 26 is axially slidably sleeved on the outer surface of the connecting disk 25, and the top of the sleeve column 26 is in active contact with the outer surface of the filter belt 16, and the top of the sleeve column 26 is closed, and a second spring 27 is fixedly provided between the end of the connecting disk 25 away from the right-angle curved rod 24 and the sleeve column 26, and a second protrusion 28 is also fixedly provided on the outer wall of the sleeve column 26, and the upper end surface of the frame 2 is fixedly mounted with a motor 11, and the output end of the motor 11 is assembled with one end of the optical axis 21 through a synchronous gear belt group transmission.

[0038] The transmission assembly includes a notch opened on the end face of the frame 2 away from the air pipe 3, and the notch is blocked and closed by the annular sealing belt 18. Since the annular sealing belt 18 can block the notch, a large amount of air will not leak into the interior of the frame 2 through the notch. One of the annular sealing belts 18 close to the notch is provided with a plurality of equally spaced slots 37 on the end face away from the filter belt 16. The external rotating frame of the frame 2 is provided with a positioning shaft 44, and a turntable 35 is fixedly mounted on the outer surface of the positioning shaft 44. A plurality of shifting blocks 36 that are circumferentially equally spaced and movably engaged with the slots 37 are fixedly mounted on the outer surface of the turntable 35. A worm gear 30 is also fixedly mounted on the outer surface of the positioning shaft 44, and the outer side of the worm gear 30 is meshingly assembled with the optical axis 21, and the optical axis 21 is fixedly mounted on the outside of the optical axis 21.

[0039] The auxiliary slag discharge unit includes a spherical valve core 46 fixedly arranged at the end of the positioning shaft 44 away from the worm gear 30, and the outer surface of the spherical valve core 46 is rotatably sleeved with a ball valve sleeve 45, the position of the ball valve sleeve 45 is relatively fixed to the laser engraving head 1 and the frame 2, the end of the branch pipe 8 away from the gas supply pipe 3 is fixedly docked at the top of the ball valve sleeve 45, and the side wall of the ball valve sleeve 45 is also fixedly connected with an injection pipe 47, a right-angled through groove 48 is provided at a right angle inside the spherical valve core 46, and the two ports of the right-angled through groove 48 are respectively docked with the branch pipe 8 and the injection pipe 47, an air pump is connected to the end of the injection pipe 47 away from the ball valve sleeve 45, and the air pump can inject high-pressure gas into the injection pipe 47, and a plastic container is also sleeved on the outside of the injection pipe 47 between the air pump and the ball valve sleeve 45, and the plastic container is also interconnected with the injection pipe 47, and the plastic container can be deformed after being pressurized.

[0040] Working principle: In this scheme, taking the embossing process of the wood substrate as a reference, when the laser engraving head 1 is started to perform the embossing operation on the wood, the suction fan is started in advance, and the negative pressure pipe 15 is allowed to perform negative pressure suction on the two suction pipes 4 through the frame 2, and then the laser engraving is performed. During the engraving process, the dust and smoke generated by the laser sintering on the wood surface will be sucked into the inside of the frame 2 by the suction pipe 4, and the dust will be isolated by the filter belt 16, and the smoke will be filtered by the filter belt 16 and enter the inside of the negative pressure pipe 15 to be sucked out;

[0041] During the engraving operation, the motor 11 should also be started. The motor 11 drives the optical axis 21 to rotate. Under the action of the worm 29 and the worm wheel 30, the first gear 31 rotates. The first gear 31 can slowly move the annular closed belt 18 through the engagement of the shift block 36 with the slot 37. The annular closed belt 18 can move synchronously with the filter belt 16, so that the filter belt 16 can circulate inside the frame 2. During the transmission process, the optical axis 21 can frequently press and release the second protrusion 28 through the first protrusion 23, so that the sleeve column 26 continuously and elastically knocks the surface of the filter belt 16, and the dust attached to the surface of the filter belt 16 is knocked off and falls above the magnetic bottom cover 10, so as to avoid excessive dust attached to the surface of the filter belt 16, thereby affecting the effect of negative pressure suction.

[0042] In order to ensure the synchronous movement of the two annular closed belts 18 and the filter belt 16, a number of equally spaced reinforcement rods can be inserted between the two annular closed belts 18, and the reinforcement rods are inserted in the middle of the filter belt 16; or the carrier plate 17 is replaced with a synchronous gear, and the inner ring surface of the annular closed belt 18 is a tooth surface, which meshes with the synchronous gear, and a transmission shaft is fixedly inserted between the two relatively distributed synchronous gears, and the transmission shaft is rotatably mounted inside the frame 2. Both methods can ensure the stability of the synchronous movement of the two annular closed belts 18 and the filter belt 16.

[0043] When the depth of the relief on the wood becomes deeper and deeper, the dust deposited in the pit is not easy to be sucked out and removed. For this purpose, high-pressure gas is injected into the air injection pipe 47 through an air pump, and the spherical valve core 46 is rotated until the two ports of the right-angle groove 48 are just connected with the branch pipe 8 and the air injection pipe 47. The high-pressure gas can enter the interior of the air supply pipe 3 through the branch pipe 8, and be sprayed toward the engraved part from the port of the air supply pipe 3, so that the dust in a small area of ​​the engraved part can be blown up, and the blown dust can be more conveniently sucked out and removed by the expansion frame 5, thereby improving the dust removal effect during the relief process.

[0044] The above solution is also applicable to substrates such as metal, rock slabs, plastic, and rubber.

[0045] Example 2: Please refer to Figure 4 and Fig. 9 This embodiment is a further explanation of the first embodiment. A plurality of first springs 13 equidistantly distributed on a circumference are fixedly arranged between the outer surface of the elbow of the suction pipe 4 and the inner wall of the docking tube 12, and a flexible corrugated sheet 14 is also fixedly arranged between the outer surface of the elbow of the suction pipe 4 and the inner wall of the docking tube 12. The flexible corrugated sheet 14 is located below the first spring 13. A vibrating component for knocking the two suction pipes 4 is also arranged between the turntable 35 and the frame 2. Under the action of the first spring 13, the frame 2 and the suction pipe 4 are elastically connected.

[0046] The vibrating component includes two supporting plates 32 mounted on one end of the frame 2 near the suction pipe 4, each supporting plate 32 is rotatably mounted on one end away from the frame 2, and a second gear 33 is fixedly sleeved on the bottom of the rotating column, a first gear 31 is fixedly mounted on the lower end surface of the rotating disk 35, and a transmission toothed belt 34 is installed between the two second gears 33 and the first gear 31 for common transmission, and a rotating rod 38 is rotatably inserted inside each supporting plate 32, and a transmission gear 41 is fixedly sleeved on the upper end surface of the rotating rod 38, and a pair of fixed gears 41 are fixedly mounted on the outer wall of the transmission gear 41. A knocking block 43 is used to knock the suction pipe 4, and a toothless gear 42 that is movably engaged with the transmission gear 41 is fixedly mounted on the upper end surface of the rotating column, and a blocking block 40 is fixedly arranged on the lower end surface of the supporting plate 32. The blocking block 40 is distributed on the outer side of the rotating rod 38, and a third annular spring 39 is fixedly arranged between the bottom outer wall of the rotating rod 38 and the blocking block 40. The toothless gear 42 can drive the transmission gear 41 to deflect a certain angle and then release it. At the moment of release, the knocking block 43 can knock on the surface of the suction pipe 4 under the action of the compressed third spring 39.

[0047] In this embodiment: when the turntable 35 drives the first gear 31, it can also drive the two second gears 33 to rotate synchronously, so that the toothless gear 42 can intermittently move the transmission gear 41. At the same time, under the action of the third spring 39, when the toothless gear 42 deflects the transmission gear 41, the third spring 39 will undergo elastic deformation. When the toothless gear 42 is separated from the transmission gear 41, the third spring 39 can make the rotating rod 38 quickly reset the transmission gear 41 and make the knocking block 43 knock on the surface of the suction pipe 4. Since the suction pipe 4 and the air supply pipe 3 are not completely fixed, the knocking can make the suction pipe 4 produce effective vibration conduction, thereby reducing the degree of dust adhesion on the inner wall of the suction pipe 4 to ensure that the suction pipe 4 can play an effective transmission role.

[0048] Example 3: Please refer to Fig.11 This embodiment is a further explanation of the first embodiment. The laser engraving head 1 includes a housing, and a direct engraving machine mainboard, a frequency hopping RF driver, a laser generator, a reflector, an acousto-optic modulator, and a focusing lens installed inside the housing.

[0049] The focusing lens is located at the emission port of the laser engraving head 1 , which ensures that the laser beam emitted from the laser engraving head 1 can be located at the axial position of the gas delivery pipe 3 .

[0050] In this embodiment: the direct engraving machine mainboard inputs the data signal to the frequency modulation RF driver, and the RF driver generates at least two high-frequency signals of different frequencies in time-sharing. According to the principle of the acousto-optic modulator, at least two paths of deflected light will be deflected at different positions. Since the jump time of multiple signals of different frequencies is very fast (nanosecond level), the generated multi-path deflected light is almost emitted at the same time, and then focused and engraved by the lens. By engraving with multiple paths of light in parallel, the engraving speed can be greatly accelerated.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-path laser direct engraving machine, characterized in that: include: A laser engraving head (1) and an assembly buckle frame (6) fixedly mounted on the periphery of the emitting end of the laser engraving head (1), wherein a docking plate (7) is slidably mounted inside the assembly buckle frame (6), the assembly buckle frame (6) and the docking plate (7) are limited by magnetic attraction, an end of the docking plate (7) away from the laser engraving head (1) is fixedly connected to an air supply pipe (3), and the laser path of the laser engraving head (1) coincides with the axis of the air supply pipe (3), and a branch pipe (8) is also fixedly mounted on the outer wall of the air supply pipe (3); Also includes: A suction unit, used for sucking dust and smoke generated by the engraved part, wherein the suction unit is distributed outside the air delivery pipe (3); The auxiliary slag removal unit is used to improve the dust removal effect on the engraved part, and the auxiliary slag removal unit is located between the branch pipe (8) and the suction unit.

2. The multi-path laser direct engraving machine according to claim 1, characterized in that: The suction unit comprises a frame (2) hoisted at the bottom of the laser engraving head (1), and two suction pipes (4) are distributed on the outside of the frame (2), the two suction pipes (4) are symmetrically centered on the gas supply pipe (3), the upper and lower ends of the suction pipe (4) are respectively an elbow and a right angle portion, the right angle end of each suction pipe (4) is fixedly connected to a flaring frame (5), and the open ports of the two flaring frames (5) are both facing the exposed end of the gas supply pipe (3), the interior of the frame (2) is hollow, and the top of the frame (2) is fixedly connected to two symmetrically distributed docking The frame (2) is provided with a tube (12), the elbows of the two suction pipes (4) respectively extend into the interior of the two docking tubes (12), and the side wall of the frame (2) is fixedly connected with a negative pressure pipe (15), the negative pressure pipe (15) and the air supply pipe (3) are vertically distributed, the frame (2) is located between the air supply pipe (3) and the negative pressure pipe (15), and the docking position of the negative pressure pipe (15) and the frame (2) is located at the center of the frame (2), the end of the negative pressure pipe (15) away from the frame (2) is equipped with a suction fan, and the frame (2) is also provided with a dust isolation component.

3. The multi-path laser direct engraving machine according to claim 2, characterized in that: The dust isolation component comprises two symmetrically distributed annular closed belts (18) which are slidably mounted inside the frame (2), and a filter belt (16) is fixedly mounted between the two annular closed belts (18). A supporting bearing plate (17) is slidably mounted on the inner side of each annular closed belt (18), and a plurality of the bearing plates (17) are mounted inside the frame (2). The connection portion between the negative pressure pipe (15) and the frame (2) is located in the inner circle space of the filter belt (16). The outside of the frame (2) is also provided with a transmission component which drives the annular closed belt (18), and a cleaning component which cleans the dust adsorbed on the surface of the filter belt (16).

4. The multi-path laser direct engraving machine according to claim 3, characterized in that: The cleaning assembly comprises a collecting frame (9) fixedly arranged at the bottom of the frame (2), and the collecting frame (9) is connected to the frame (2), and the bottom of the collecting frame (9) is also magnetically equipped with a magnetic bottom cover (10), the interior of the collecting frame (9) is rotatably equipped with an optical axis (21), and the optical axis (21) and the gas pipe (3) are vertically distributed, the side wall of the collecting frame (9) is fixedly provided with a plurality of right-angled curved rods (24) distributed in a straight line and at equal intervals, and the right-angled ends of the right-angled curved rods (24) face the frame (2), the outer surface of the optical axis (21) is fixedly provided with a sleeve (22) of the same number as the right-angled curved rods (24), and the outer surface of the sleeve (22) is fixedly provided with a first protrusion (23) ), a connecting plate (25) is fixedly provided at the right-angle end of each of the right-angle curved rods (24), and a sleeve column (26) is axially slidably sleeved on the outer surface of the connecting plate (25), the top of the sleeve column (26) is in active contact with the outer surface of the filter belt (16), the top of the sleeve column (26) is closed, and a second spring (27) is fixedly provided between one end of the connecting plate (25) away from the right-angle curved rod (24) and the sleeve column (26), and a second protrusion (28) is also fixedly provided on the outer wall of the sleeve column (26), and an electric motor (11) is fixedly mounted on the upper end surface of the frame (2), and the output end of the electric motor (11) is assembled with one end of the optical axis (21) through a synchronous gear belt group transmission.

5. The multi-path laser direct engraving machine according to claim 4, characterized in that: The transmission assembly comprises a notch formed on an end face of the frame (2) away from the air delivery pipe (3), and the notch is blocked and closed by the annular sealing belt (18); a plurality of slots (37) distributed at equal intervals are formed on an end face of one of the annular sealing belts (18) away from the filter belt (16) near the notch; an external rotating frame of the frame (2) is provided with a positioning shaft (44), and a rotating disk (35) is fixedly mounted on the outer surface of the positioning shaft (44); a plurality of shifting blocks (36) movably engaged with the slots (37) and distributed at equal intervals around the circumference are fixedly mounted on the outer surface of the rotating disk (35); a worm gear (30) is also fixedly mounted on the outer surface of the positioning shaft (44), and an optical axis (21) is meshingly assembled on the outer side of the worm gear (30); the optical axis (21) is fixedly mounted on the outside of the optical axis (21).

6. The multi-path laser direct engraving machine according to claim 5, characterized in that: The auxiliary slag discharge unit comprises a spherical valve core (46) fixedly arranged at one end of the positioning shaft (44) away from the worm gear (30), and a ball valve sleeve (45) is rotatably sleeved on the outer surface of the spherical valve core (46), and the position of the ball valve sleeve (45) is relatively fixed to the laser engraving head (1) and the frame (2), and the end of the branch pipe (8) away from the gas supply pipe (3) is fixedly docked at the top of the ball valve sleeve (45), and the side wall of the ball valve sleeve (45) is also fixedly connected with an air injection pipe (47), and a right-angled through groove (48) is provided inside the spherical valve core (46), and two ports of the right-angled through groove (48) are respectively docked with the branch pipe (8) and the air injection pipe (47), and the end of the air injection pipe (47) away from the ball valve sleeve (45) is connected to an air pump.

7. The multi-path laser direct engraving machine according to claim 5, characterized in that: A plurality of first springs (13) are fixedly arranged between the outer surface of the elbow of the suction pipe (4) and the inner wall of the docking tube (12) and are equidistantly distributed around the circumference. A flexible corrugated sheet (14) is also fixedly arranged between the outer surface of the elbow of the suction pipe (4) and the inner wall of the docking tube (12). The flexible corrugated sheet (14) is located below the first spring (13). A vibrating component for striking the two suction pipes (4) is also arranged between the turntable (35) and the frame (2).

8. The multi-path laser direct engraving machine according to claim 7, characterized in that: The vibrating component comprises two supporting plates (32) mounted on one end surface of the frame (2) close to the suction pipe (4), a rotating column is rotatably mounted on one end of each supporting plate (32) away from the frame (2), and a second gear (33) is fixedly mounted on the bottom of the rotating column, a first gear (31) is fixedly mounted on the lower end surface of the rotating disk (35), a transmission toothed belt (34) is commonly driven between the two second gears (33) and the one first gear (31), a rotating rod (38) is rotatably mounted inside each supporting plate (32), and the rotating column (35) is fixedly mounted with a second gear (33) and a first gear (31). A transmission gear (41) is fixedly mounted on the upper end surface of the rod (38); a knocking block (43) for knocking the suction pipe (4) is fixedly mounted on the outer wall of the transmission gear (41); a toothless gear (42) movably meshed with the transmission gear (41) is fixedly mounted on the upper end surface of the rotating column; a blocking block (40) is fixedly mounted on the lower end surface of the supporting plate (32); the blocking block (40) is distributed on the outer side of the rotating rod (38); and a third spring (39) in an annular shape is fixedly mounted between the bottom outer wall of the rotating rod (38) and the blocking block (40).

9. The multi-path laser direct engraving machine according to claim 1, characterized in that: The laser engraving head (1) comprises a shell, and a direct engraving machine mainboard, a frequency-hopping RF driver, a laser generator, a reflector, an acousto-optic modulator, and a focusing lens installed inside the shell.

10. The multi-path laser direct engraving machine according to claim 9, characterized in that: The focusing lens is located at the emission port of the laser engraving head (1).

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