CN113275767A

CN113275767A - Automatic focusing and automatic laser cutting equipment

Info

Publication number: CN113275767A
Application number: CN202110656653.5A
Authority: CN
Inventors: 朱刚; 赵强; 黎鉴科
Original assignee: Shenzhen Supertech Laser Technology Co ltd
Current assignee: Shenzhen Supertech Laser Technology Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-08-20

Abstract

The invention belongs to the technical field of laser cutting, in particular to automatic focusing and automatic laser cutting equipment, which comprises a supporting seat, wherein the top of the supporting seat is fixedly connected with a cutting table, the top of the supporting seat is fixedly connected with a cutting arm, the bottom of the cutting arm is fixedly connected with a laser cutting head, and the surface of the laser cutting head is sleeved with a cooling sleeve, so that the problem that the cutting power of the laser cutting machine needs to be adjusted in advance by a user when the conventional laser cutting machine aims at workpieces with different thicknesses is solved, the user needs to adjust the cutting power before replacing the workpieces with different thicknesses, the operation is not beneficial to improving the efficiency of laser cutting, the conventional laser cutting equipment does not have the functions of dust absorption and smoke absorption, the smoke and particulate matters generated during cutting can influence the operation of the user and can cause the smoke to be absorbed on products, the cutting quality of the product is affected.

Description

Automatic focusing and automatic laser cutting equipment

Technical Field

The invention relates to the technical field of laser cutting, in particular to automatic focusing and automatic laser cutting equipment.

Background

The laser cutting machine focuses laser emitted from a laser into a laser beam with high power density through an optical path system, the laser beam irradiates the surface of a workpiece to enable the workpiece to reach a melting point or a boiling point, meanwhile, high-pressure gas coaxial with the laser beam blows away molten or gasified metal, and finally, a material forms a cutting seam along with the movement of the relative position of the laser beam and the workpiece, so that the cutting purpose is achieved.

Laser cutting has certain limitation when using, can not freely cut to the work piece that thickness is inhomogeneous, current laser cutting machine is when the work piece to different thickness, need the user to adjust laser cutting machine's cutting power in advance, carry out manual focusing, and continuously monitor the focus state in cutting process, the work piece that just can guarantee the cutting can cut thoroughly, simultaneously again can furthest's energy saving, so the user all will adjust before the work piece of changing different thickness, such operation, be unfavorable for improving laser cutting's efficiency, and do not possess the dust absorption among the current laser cutting equipment yet and carry out the function of gettering to smog, smog and particulate matter that produce during the cutting can influence user's operation and can lead to adsorbing on the product, influence the cutting quality of product, consequently, need to provide an automatic laser cutting equipment that can automatic focusing and carry out the gettering to dust and smog automatically to satisfy user's, the cutting equipment of smog And (4) demand.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, and in this section as well as in the abstract and the title of the invention of this application some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made in view of the problems occurring in the existing automatic laser cutting apparatuses.

To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions: an automatic focusing and automatic laser cutting device comprises a supporting seat, wherein the top of the supporting seat is fixedly connected with a cutting table, the top of the supporting seat is fixedly connected with a cutting arm, the bottom of the cutting arm is fixedly connected with a laser cutting head, the surface of the laser cutting head is sleeved with a cooling sleeve, the bottom of the cooling sleeve is fixedly connected with an alignment mechanism, and the inner wall of the laser cutting head is fixedly connected with a focusing mechanism;

a first light shielding plate (206) is arranged at the upper hole edge of the focusing hole (204), a second light shielding plate (207) is arranged at the lower hole edge, the first light shielding plate (206) is provided with a first round hole with a first diameter, the upper surface of the inner edge of the first round hole is provided with a first illumination sensor, the second light shielding plate (207) is provided with a second round hole with a second diameter, and the lower surface of the inner edge of the second round hole is provided with a second illumination sensor; the first illumination sensor and the second illumination sensor are electrically connected to a controller of the laser cutting device, and the controller automatically focuses according to the following logic:

s1: if the lumen number of the focus detected by the second illumination sensor is lower than a first threshold value and the lumen number detected by the first illumination sensor is lower than a second threshold value, the focusing mechanism (6) adjusts the focus of the laser to move downwards;

s2: if the lumen number of the focus detected by the second illumination sensor is lower than a first threshold value and the lumen number detected by the first illumination sensor is higher than a third threshold value, the focusing mechanism (6) adjusts the focus of the laser to move upwards.

The alignment mechanism comprises two adjusting wheels, two adjusting blocks, an adjusting sleeve, a focusing hole and two adjusting rods, the top of each adjusting rod is fixedly connected with the bottom of the cooling sleeve, the bottom of each adjusting rod is fixedly connected with the top of the corresponding adjusting block, one side, close to the adjusting sleeve, of each adjusting block is fixedly connected with the corresponding adjusting sleeve, the focusing hole is formed in the corresponding adjusting sleeve, and the top of each adjusting wheel is fixedly connected with the bottom of the corresponding adjusting sleeve;

the focusing mechanism comprises two screws, two stabilizing springs, a focusing lens and two threaded sleeves, the top and the bottom of each screw are fixedly connected with the inner wall of the laser cutting head, the threaded sleeves and the stabilizing springs are all sleeved on the surfaces of the screws, the top and the bottom of each stabilizing spring are fixedly connected with the inner wall and the threaded sleeves of the laser cutting head respectively, the focusing lens is fixed between one opposite sides of the two threaded sleeves, and one side, far away from the focusing lens, of each threaded sleeve penetrates through the outer side of the laser cutting head and is fixedly connected with the inner wall of the cooling sleeve.

As a preferable embodiment of the automatic focusing and automatic laser cutting apparatus according to the present invention, wherein: the rear side fixedly connected with water tank of cutting arm, the fixed intercommunication in rear side of water tank has the inlet tube, the fixed intercommunication in bottom of water tank has the drain pipe, the top cover of inlet tube is equipped with the tube cap, the surface cover of drain pipe is equipped with the control valve, the rear side fixedly connected with of cutting arm and the backup pad that the water tank cooperation was used.

As a preferable embodiment of the automatic focusing and automatic laser cutting apparatus according to the present invention, wherein: the top fixedly connected with dust absorption mechanism of water tank, dust absorption mechanism includes connecting pipe, conveyer pipe, dust catcher, dust exhaust pipe, two dust absorption pipes and two suction hoods, the bottom of dust catcher and the top fixed connection of water tank, the right side and the fixed intercommunication of dust catcher of dust exhaust pipe, the one end that the dust catcher was kept away from to the dust exhaust pipe runs through to the inner chamber of water tank, the one end and the fixed intercommunication of dust catcher of conveyer pipe, the other end of conveyer pipe and the fixed intercommunication in bottom of connecting pipe, the one end and the fixed intercommunication of suction hood of dust absorption pipe, the other end and the fixed intercommunication of connecting pipe of dust absorption pipe, the suction hood is close to one side and the cutting arm fixed connection of cutting arm.

As a preferable embodiment of the automatic focusing and automatic laser cutting apparatus according to the present invention, wherein: the cutting device is characterized in that a plurality of cutting sleeves are sleeved on the surface of the dust exhaust pipe, one side, close to the cutting arm, of each cutting sleeve is fixedly connected with the cutting arm, the top of the water tank is fixedly communicated with a smoke exhaust pipe, and smoke exhaust holes are formed in the surface of the smoke exhaust pipe.

As a preferable embodiment of the automatic focusing and automatic laser cutting apparatus according to the present invention, wherein: the surface cover of connecting pipe has two fixed covers, the front side fixedly connected with dead lever of fixed cover, the front side and the cutting arm fixed connection of dead lever.

As a preferable embodiment of the automatic focusing and automatic laser cutting apparatus according to the present invention, wherein: the left side fixedly connected with of water tank send water mechanism, the right side fixedly connected with circulation mechanism of water tank, send one side that water mechanism and circulation mechanism are close to the cooling jacket all with the fixed intercommunication of cooling jacket, the inside of cooling jacket is seted up and is sent water mechanism and circulation mechanism cooperation cooling chamber that uses.

As a preferable embodiment of the automatic focusing and automatic laser cutting apparatus according to the present invention, wherein: the circulating mechanism comprises a circulating pipe, a circulating pump and a return pipe, one end of the return pipe is fixedly communicated with the cooling jacket, the other end of the return pipe is fixedly communicated with the circulating pump, the left side of the circulating pump is fixedly connected with the cutting arm, one end of the circulating pipe is fixedly communicated with the circulating pump, and the other end of the circulating pipe is fixedly communicated with the top of the right side of the water tank.

As a preferable embodiment of the automatic focusing and automatic laser cutting apparatus according to the present invention, wherein: the water supply mechanism comprises a water suction pipe, a water supply pump and a water supply pipe, one end of the water suction pipe is fixedly communicated with the bottom of the left side of the water tank, the other end of the water suction pipe is fixedly communicated with the water supply pump, the right side of the water supply pump is fixedly connected with the cutting arm, one end of the water supply pipe is fixedly communicated with the water supply pump, and the other end of the water supply pipe is fixedly communicated with the cooling jacket.

As a preferable embodiment of the automatic focusing and automatic laser cutting apparatus according to the present invention, wherein: the inside of water tank is installed with the filter screen that uses with circulation mechanism and dust absorption mechanism cooperation, the rear side swing joint of water tank has the closing plate.

Compared with the prior art, the invention has the beneficial effects that:

1. the automatic focusing device is used by matching the alignment mechanism and the focusing mechanism, can realize the function of automatic focusing when cutting workpieces with different thicknesses, the regulating wheel rolls on the surface of the workpiece, the regulating sleeve and the regulating block can be driven to move up and down while rolling, the regulating block can be driven to move up and down, the regulating rod can be driven to move up and down, the cooling sleeve can be driven to move up and down while moving, the screw sleeve can be driven to slide on the surface of the screw rod, the stabilizing spring is extruded, the focusing lens can be driven to move up and down while moving, automatic focusing can be realized by ensuring that the cut workpiece can be cut thoroughly, and energy can be saved to the maximum extent simultaneously.

2. Through dust absorption mechanism, can realize that smog and dust granule etc. that produce when cutting are absorbed, the smog that the laser cutting head produced when cutting the work piece and dust granule can get into the suction hood under the suction of dust catcher, through the inside that the suction hood got into the dust absorption pipe, and through the inside that the dust absorption pipe got into the connecting pipe, then get into the conveyer pipe through the connecting pipe, and get into the dust exhaust pipe through the conveyer pipe, the inside that gets into the water tank through the dust exhaust pipe is handled, and the smoke vent of seting up on the smog pipe after handling discharges, the operation that smog and particulate matter can influence the user with can lead to adsorbing on the product, influence the emergence of the cutting quality of product.

3. Through sending water mechanism, the cooperation of cooling jacket and circulation mechanism is used, can realize carrying out refrigerated effect to the laser cutting head, the heat that has prevented the laser cutting head is overheated and causes the damage, the water feeding pump carries cooling water to the inner chamber of flow pipe through the pipe that absorbs water, and get into the cooling chamber of cooling jacket inside through the flow pipe, the circulating water is full of the cooling chamber and can realize cooling the surface of laser cutting head, prevent to influence the life of laser cutting head because of the heat is overheated, and the cooling water gets into the inner chamber of back flow under the effect of circulating pump, and get into the inner chamber of circulating pipe through the back flow, the inner chamber that gets into the water tank through the circulating pipe carries out circulative cooling, the cooling efficiency and the cooling effect of laser cutting head have been guaranteed.

4. Through the filter screen, can realize carrying to the inside impurity of water tank and carrying out filterable effect, through the water tank, can realize filtering the effect of cleaing away to the particulate matter that contains in inspiratory dust granule and the smog, prevented that the operator from inhaling, purified the processing environment, and through the closing plate, can realize changing the filter screen and carry out the effect of clearing up to the impurity that the filter screen filtered gets off etc..

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:

FIG. 1 is a schematic perspective view of an automatic focusing and automatic laser cutting apparatus according to the present invention;

FIG. 2 is a schematic perspective view of a laser cutting head and alignment mechanism of an automatic focusing and automatic laser cutting apparatus according to the present invention;

FIG. 3 is a schematic perspective view of a partial structure of an automatic focusing and automatic laser cutting apparatus according to the present invention;

FIG. 4 is a cross-sectional view of a cooling jacket in an autofocus and automatic laser cutting device of the present invention;

FIG. 5 is a cross-sectional view of a water tank in an automatic focusing and automatic laser cutting apparatus of the present invention;

FIG. 6 is a schematic view of the connection between the water tank and the filter screen of the automatic focusing and automatic laser cutting apparatus according to the present invention;

FIG. 7 is a cross-sectional view of a partial structure of an auto-focusing and auto-laser cutting apparatus of the present invention;

FIG. 8 is a schematic perspective view of a smoke exhaust tube in an automatic focusing and automatic laser cutting apparatus according to the present invention.

Fig. 9 is a schematic view of the present invention with the laser focus correctly on the material being cut.

Fig. 10 is a schematic view of the present invention with the laser focus above the material being cut.

Fig. 11 is a schematic view of the present invention with the laser focus falling below the material being cut. Reference numbers in the figures: 1. a supporting seat; 2. an alignment mechanism; 201. an adjustment wheel; 202. an adjusting block; 203. an adjusting sleeve; 204. a focusing aperture; 205. adjusting a rod; 206. a first light shielding plate; 207. a second light shielding plate; 3. a dust suction mechanism; 301. a connecting pipe; 302. a delivery pipe; 303. a vacuum cleaner; 304. a dust exhaust pipe; 305. a dust collection pipe; 306. a dust hood; 4. a circulating mechanism; 401. a circulation pipe; 402. a circulation pump; 403. a return pipe; 5. a water delivery mechanism; 501. a suction pipe; 502. a water pump; 503. a water supply pipe; 6. a focusing mechanism; 601. a screw; 602. a stabilizing spring; 603. a focusing lens; 604. a threaded sleeve; 7. cutting table; 8. a support plate; 9. a water tank; 10. a laser cutting head; 11. a cooling jacket; 12. fixing a sleeve; 13. fixing the rod; 14. a smoke vent; 15. a tube cover; 16. a water inlet pipe; 17. a sealing plate; 18. a drain pipe; 19. a control valve; 20. a filter screen; 21. a smoke exhaust pipe; 22. a cutting arm; 23. a card sleeve; 24. and a cooling cavity.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Examples

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Detailed description of the preferred embodiment

As shown in fig. 1-8, an automatic focusing and automatic laser cutting device comprises a supporting seat 1, a cutting table 7 is fixedly connected to the top of the supporting seat 1, a cutting arm 22 is fixedly connected to the top of the supporting seat 1, a laser cutting head 10 is fixedly connected to the bottom of the cutting arm 22, a cooling jacket 11 is sleeved on the surface of the laser cutting head 10, an alignment mechanism 2 is fixedly connected to the bottom of the cooling jacket 11, and a focusing mechanism 6 is fixedly connected to the inner wall of the laser cutting head 10;

the aligning mechanism 2 comprises two adjusting wheels 201, two adjusting blocks 202, an adjusting sleeve 203, a focusing hole 204 and two adjusting rods 205, the top of each adjusting rod 205 is fixedly connected with the bottom of the cooling sleeve 11, the bottom of each adjusting rod 205 is fixedly connected with the top of the corresponding adjusting block 202, one side, close to the corresponding adjusting sleeve 203, of each adjusting block 202 is fixedly connected with the corresponding adjusting sleeve 203, the focusing hole 204 is formed in the corresponding adjusting sleeve 203, and the top of each adjusting wheel 201 is fixedly connected with the bottom of the corresponding adjusting sleeve 203;

the focusing mechanism 6 comprises two screws 601, two stabilizing springs 602, a focusing lens 603 and two threaded sleeves 604, the top and the bottom of the screw 601 are fixedly connected with the inner wall of the laser cutting head 10, the threaded sleeves 604 and the stabilizing springs 602 are sleeved on the surface of the screw 601, the top and the bottom of the stabilizing springs 602 are respectively fixedly connected with the inner wall of the laser cutting head 10 and the threaded sleeves 604, the focusing lens 603 is fixed between one sides of the two threaded sleeves 604 opposite to each other, and one side of the threaded sleeves 604 far away from the focusing lens 603 penetrates through the outer side of the laser cutting head 10 and is fixedly connected with the inner wall of the cooling sleeve 11.

In this example, the rear side of the cutting arm 22 is fixedly connected with the water tank 9, the rear side of the water tank 9 is fixedly communicated with the water inlet pipe 16, the bottom of the water tank 9 is fixedly communicated with the water outlet pipe 18, the top of the water inlet pipe 16 is sleeved with the pipe cover 15, the surface of the water outlet pipe 18 is sleeved with the control valve 19, the rear side of the cutting arm 22 is fixedly connected with the support plate 8 matched with the water tank 9 for use, the water tank 9 can realize the effect of filtering and removing sucked dust particles and particles contained in smoke, the suction of an operator is prevented, the processing environment is purified, the filter screen 20 can be replaced and the effect of removing impurities filtered by the filter screen 20 can be realized through the sealing plate 17, the effect of replacing the water in the water tank 9 can be realized through the matching use of the water inlet pipe 16 and the water outlet pipe 18, the pipe cover 15 can effectively realize the effect of sealing the top of the water inlet pipe 16, through control valve 19, the effectual effect of having realized controlling the displacement of drain pipe 18, through backup pad 8, the effectual effect of having realized supporting water tank 9 has increased the stability after the water tank 9 installation.

In this example, the top of the water tank 9 is fixedly connected with the dust suction mechanism 3, the dust suction mechanism 3 includes a connection pipe 301, a delivery pipe 302, a dust collector 303, a dust exhaust pipe 304, two dust exhaust pipes 305 and two dust hoods 306, the bottom of the dust collector 303 is fixedly connected with the top of the water tank 9, the right side of the dust exhaust pipe 304 is fixedly communicated with the dust collector 303, one end of the dust exhaust pipe 304 far away from the dust collector 303 penetrates into the inner cavity of the water tank 9, one end of the delivery pipe 302 is fixedly communicated with the dust collector 303, the other end of the delivery pipe 302 is fixedly communicated with the bottom of the connection pipe 301, one end of the dust exhaust pipe 305 is fixedly communicated with the dust hoods 306, the other end of the dust exhaust pipe 305 is fixedly communicated with the connection pipe 301, one side of the dust hood 306 near the cutting arm 22 is fixedly connected with the cutting arm 22, and the dust particles, smog and dust particle that laser cutting head 10 produced when cutting the work piece can get into suction hood 306 under the suction of dust catcher 303, get into the inside of dust absorption pipe 305 through suction hood 306, and get into the inside of connecting pipe 301 through dust absorption pipe 305, then get into conveyer pipe 302 through connecting pipe 301, and get into dust exhaust pipe 304 through conveyer pipe 302, the inside that gets into water tank 9 through dust exhaust pipe 304 is handled, and the smog after handling discharges through smoke vent 14 of seting up on the pipe 21 of discharging fume, the operation that has prevented smog and particulate matter can influence the user with can lead to adsorbing on the product, influence the emergence of the cutting quality of product.

In this example, the surface cover of dust exhaust pipe 304 is equipped with cutting ferrule 23, the quantity of cutting ferrule 23 is a plurality of, cutting ferrule 23 is close to one side and the 22 fixed connection of cutting arm 22, the fixed intercommunication in top of water tank 9 has smoke exhaust pipe 21, smoke exhaust hole 14 has been seted up on smoke exhaust pipe 21's surface, through cutting ferrule 23, the effectual realization carries out the fixed effect of joint to dust exhaust pipe 304, the removal of dust exhaust pipe 304 has been prevented, cooperation through smoke exhaust pipe 21 and smoke exhaust hole 14 is used, can realize inhaling smog and dust etc. that produce when cutting, and the smog after the purification discharges.

In this example, the surface of the connecting pipe 301 is covered by two fixing covers 12, the front side of the fixing cover 12 is fixedly connected with the fixing rod 13, the front side of the fixing rod 13 is fixedly connected with the cutting arm 22, and the connecting pipe 301 is fixed on the rear side of the cutting arm 22 through the fixing cover 12 and the fixing rod 13 by using the fixing cover 12 and the fixing rod 13 in a matching manner, so that the stability of the connecting pipe 301 is increased.

In this example, the left side fixedly connected with of water tank 9 send water mechanism 5, the right side fixedly connected with circulation mechanism 4 of water tank 9, send one side that water mechanism 5 and circulation mechanism 4 are close to cooling jacket 11 all with the fixed intercommunication of cooling jacket 11, cooling chamber 24 with sending water mechanism 5 and the cooperation of circulation mechanism 4 to use is seted up to the inside of cooling jacket 11, use through sending water mechanism 5 and the cooperation of circulation mechanism 4, can realize carrying out the effect of circulating to the inside cooling water in cooling chamber 24, the cooling efficiency and the cooling effect of laser cutting head 10 have been guaranteed.

In this example, the circulation mechanism 4 includes a circulation pipe 401, a circulation pump 402 and a return pipe 403, one end of the return pipe 403 is fixedly communicated with the cooling jacket 11, the other end of the return pipe 403 is fixedly communicated with the circulation pump 402, the left side of the circulation pump 402 is fixedly connected with the cutting arm 22, one end of the circulation pipe 401 is fixedly communicated with the circulation pump 402, the other end of the circulation pipe 401 is fixedly communicated with the top of the right side of the water tank 9, the surface of the laser cutting head 10 can be cooled by the circulation water filled in the cooling cavity 24, the influence on the service life of the laser cutting head 10 due to heat overheating is prevented, and the cooling water enters the inner cavity of the return pipe 403 under the action of the circulation pump 402, and enters the inner cavity of the circulation pipe 401 through the return pipe 403, and enters the inner cavity of the water tank 9 through the circulation pipe 401 for circulation cooling, so that the cooling effect of the laser cutting head 10 is increased.

In this example, the water supply mechanism 5 includes a water suction pipe 501, a water supply pump 502 and a water supply pipe 503, one end of the water suction pipe 501 is fixedly communicated with the left bottom of the water tank 9, the other end of the water suction pipe 501 is fixedly communicated with the water supply pump 502, the right side of the water supply pump 502 is fixedly connected with the cutting arm 22, one end of the water supply pipe 503 is fixedly communicated with the water supply pump 502, the other end of the water supply pipe 503 is fixedly communicated with the cooling jacket 11, the water supply mechanism 5 can realize the function of conveying cooling water to the cooling cavity 24, the water supply pump 502 conveys the cooling water to the inner cavity of the water supply pipe 503 through the water suction pipe 501, and the cooling water enters the cooling cavity 24 inside the cooling jacket 11 through the water supply pipe 503, the cooling cavity 24 is filled with circulating water, so that the surface of the laser cutting head 10 can be cooled, and the service life of the laser cutting head 10 is prevented from being influenced by heat overheating.

In this example, a filter screen 20 used in cooperation with the circulation mechanism 4 and the dust suction mechanism 3 is installed inside the water tank 9, a sealing plate 17 is movably connected to the rear side of the water tank 9, and the effect of filtering the impurities conveyed to the inside of the water tank 9 can be achieved through the filter screen 20.

It should be noted that the invention is an automatic focusing and automatic laser cutting device, firstly, a workpiece to be cut is placed on the top of a cutting table 7 and is located at the bottom of an adjusting wheel 201, the adjusting wheel 201 rolls on the surface of the workpiece and can drive an adjusting sleeve 203 and an adjusting block 202 to move up and down while rolling, the adjusting block 202 can drive an adjusting rod 205 to move up and down while moving, the adjusting rod 205 can drive a cooling sleeve 11 to move while moving, the cooling sleeve 11 can drive a threaded sleeve 604 to slide on the surface of a screw 601 while moving, and a stabilizing spring 602 is extruded, the threaded sleeve 604 can drive a focusing lens 603 to move up and down while moving, so as to automatically focus, then the laser cutting head 10 cuts the workpiece, and smoke and dust particles generated during cutting can enter a dust hood 306 under the suction force of a dust collector 303 and enter the inside a dust collection pipe 305 through the dust hood 306, and enters the inside of the connecting pipe 301 through the dust collection pipe 305, then enters the conveying pipe 302 through the connecting pipe 301, and enters the dust exhaust pipe 304 through the conveying pipe 302, enters the inside of the water tank 9 through the dust exhaust pipe 304 for treatment, and the treated smoke is discharged through the smoke exhaust hole 14 formed in the smoke exhaust pipe 21, thereby preventing the smoke and particles from influencing the operation of a user and causing the smoke and particles to be adsorbed on a product, thereby influencing the cutting quality of the product, meanwhile, the water feeding pump 502 feeds cooling water to the inner cavity of the water feeding pipe 503 through the water suction pipe 501, and enters the cooling cavity 24 inside the cooling jacket 11 through the water feeding pipe 503, circulating water is filled in the cooling cavity 24, thereby realizing the cooling of the surface of the laser cutting head 10, preventing the service life of the laser cutting head 10 from being influenced by overheating of heat, and the cooling water enters the inner cavity of the return pipe 403 under the action of the circulating pump 402, and enters the inner cavity of the return pipe 401 through the return pipe 403, and the water enters the inner cavity of the water tank 9 through the circulating pipe 401 for circulating cooling, so that the cooling efficiency and the cooling effect of the laser cutting head 10 are ensured.

Detailed description of the invention

As shown in fig. 9-11, a first light shielding plate 206 is further disposed at the upper hole edge of the focusing hole 204, a second light shielding plate 207 is disposed at the lower hole edge, the first light shielding plate 206 has a first circular hole with a first diameter, a first illumination sensor is disposed on the upper surface of the inner edge of the first circular hole, the second light shielding plate 207 has a second circular hole with a second diameter, and a second illumination sensor is disposed on the lower surface of the inner edge of the second circular hole.

The first diameter is larger than the second diameter, and the first diameter and the second diameter are determined by engineering technicians according to a query form, wherein the query form records information such as laser type, cut material type, height of a focus hole and the like, and can be used for querying to obtain the reference first diameter and the reference second diameter or can be obtained by the engineering technicians through preliminary experiments.

When the laser is correctly focused on the upper surface of the cut material, the lumen number at the focal point reaches the maximum, and when the second illumination sensor detects that the lumen number at the focal point exceeds a preset first threshold value, the focusing is considered to be correct, and the cutting work can be started.

When the laser is not correctly focused on the upper surface of the cut material, the second illumination sensor detects that the lumen number at the focus is lower than a preset first threshold value, and further judgment on the focus position is needed.

As shown in fig. 10, when the focal point is located above the material to be cut, the first light shielding plate 206 is not irradiated by the laser and the scattered light thereof, the detection value of the first light sensor is lower than the preset second threshold value, and at this time, the focusing lens 603 should be controlled to move downward, specifically, the controller controls the motor to start, and drives the screw 601 to rotate, so that the screw sleeve 604 drives the focusing lens 603 to move downward; and stopping the motor until the detection value of the second illumination sensor exceeds a preset first threshold value.

As shown in fig. 11, when the focal point is located below the material to be cut, the first light shielding plate 206 is irradiated by the laser and the scattered light thereof, the detection value of the first light sensor is higher than the preset third threshold value, and at this time, the focusing lens 603 should be controlled to move upward, specifically, the controller controls the motor to start, and drives the screw 601 to rotate reversely, so that the screw sleeve 604 drives the focusing lens 603 to move downward; the third threshold is higher than the second threshold; and stopping the motor until the detection value of the second illumination sensor exceeds a preset first threshold value.

The first diameter and the second diameter satisfy the following condition: when the laser beam is properly focused on the surface of the material being cut, the laser cones are tangent to the circular apertures of the first and

second masks

206 and 207, respectively.

To summarize, laser focus is considered correct when the second illumination sensor detects that the focus lumens exceed the first threshold and the first illumination sensor detects a lumen value between the second threshold and the third threshold.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a but automatic focusing and automatic laser cutting equipment, includes supporting seat (1), its characterized in that: the cutting table (7) is fixedly connected to the top of the supporting seat (1), the cutting arm (22) is fixedly connected to the top of the supporting seat (1), the laser cutting head (10) is fixedly connected to the bottom of the cutting arm (22), the cooling sleeve (11) is sleeved on the surface of the laser cutting head (10), the aligning mechanism (2) is fixedly connected to the bottom of the cooling sleeve (11), and the focusing mechanism (6) is fixedly connected to the inner wall of the laser cutting head (10);

2. An autofocus and automatic laser cutting device according to claim 1, wherein: the aligning mechanism (2) comprises two adjusting wheels (201), two adjusting blocks (202), an adjusting sleeve (203), a focusing hole (204) and two adjusting rods (205), the top of each adjusting rod (205) is fixedly connected with the bottom of the cooling sleeve (11), the bottom of each adjusting rod (205) is fixedly connected with the top of each adjusting block (202), one side, close to the adjusting sleeve (203), of each adjusting block (202) is fixedly connected with the adjusting sleeve (203), the focusing hole (204) is formed in the adjusting sleeve (203), and the top of each adjusting wheel (201) is fixedly connected with the bottom of the adjusting sleeve (203); the focusing mechanism (6) comprises two screws (601), two stabilizing springs (602), a focusing lens (603) and two threaded sleeves (604), wherein the top and the bottom of each screw (601) are fixedly connected with the inner wall of the laser cutting head (10), the threaded sleeves (604) and the stabilizing springs (602) are sleeved on the surfaces of the screws (601), the top and the bottom of each stabilizing spring (602) are respectively and fixedly connected with the inner wall of the laser cutting head (10) and the threaded sleeves (604), the focusing lens (603) is fixed between the opposite sides of the two threaded sleeves (604), and one side, far away from the focusing lens (603), of each threaded sleeve (604 penetrates through the outer side of the laser cutting head (10) and is fixedly connected with the inner wall of the cooling sleeve (11); the rear side fixedly connected with water tank (9) of cutting arm (22), the fixed intercommunication in rear side of water tank (9) has inlet tube (16), the fixed intercommunication in bottom of water tank (9) has drain pipe (18), the top cover of inlet tube (16) is equipped with tube cap (15), the surface cover of drain pipe (18) is equipped with control valve (19), the rear side fixedly connected with of cutting arm (22) and backup pad (8) that water tank (9) cooperation was used.

3. An autofocus and automatic laser cutting device according to claim 2, wherein: the top fixedly connected with dust absorption mechanism (3) of water tank (9), dust absorption mechanism (3) are including connecting pipe (301), conveyer pipe (302), dust catcher (303), dust exhaust pipe (304), two dust absorption pipes (305) and two suction hoods (306), the bottom of dust catcher (303) and the top fixed connection of water tank (9), the right side and the fixed intercommunication of dust catcher (303) of dust exhaust pipe (304), the one end that dust catcher (303) were kept away from in dust exhaust pipe (304) runs through to the inner chamber of water tank (9), the one end and the fixed intercommunication of dust catcher (303) of conveyer pipe (302), the other end and the fixed intercommunication in bottom of connecting pipe (302), the one end and the fixed intercommunication of suction hood (306) of dust absorption pipe (305), the other end of the dust suction pipe (305) is fixedly communicated with the connecting pipe (301), and one side of the dust suction cover (306) close to the cutting arm (22) is fixedly connected with the cutting arm (22).

4. An autofocus and automatic laser cutting device according to claim 3, wherein: the utility model discloses a cutting device for smoke exhaust pipe, including dust exhaust pipe (304), cutting ferrule (23) are equipped with to the surface cover of dust exhaust pipe (304), the quantity of cutting ferrule (23) is a plurality of, one side and cutting arm (22) fixed connection that cutting ferrule (23) are close to cutting arm (22), the fixed intercommunication in top of water tank (9) has smoke exhaust pipe (14), smoke exhaust hole (21) have been seted up on the surface of smoke exhaust pipe (14).

5. An autofocus and automatic laser cutting device according to claim 3, wherein: the surface cover of connecting pipe (301) has two fixed covers (12), the front side fixedly connected with dead lever (13) of fixed cover (12), the front side and the cutting arm (22) fixed connection of dead lever (13).

6. An autofocus and automatic laser cutting device according to claim 2, wherein: the left side fixedly connected with of water tank (9) send water mechanism (5), the right side fixedly connected with circulation mechanism (4) of water tank (9), send one side that water mechanism (5) and circulation mechanism (4) are close to cooling jacket (11) all with cooling jacket (11) fixed intercommunication, cooling chamber (24) of offering with sending water mechanism (5) and circulation mechanism (4) cooperation to use are inside cooling jacket (11).

7. An autofocus and automatic laser cutting device according to claim 6, wherein: circulation mechanism (4) are including circulating pipe (401), circulating pump (402) and back flow (403), the one end and the fixed intercommunication of cooling jacket (11) of back flow (403), the other end and the fixed intercommunication of circulating pump (402) of back flow (403), the left side and the cutting arm (22) fixed connection of circulating pump (402), the one end and the fixed intercommunication of circulating pump (402) of circulating pipe (401), the other end and the fixed intercommunication in top on water tank (9) right side of circulating pipe (401).

8. An autofocus and automatic laser cutting device according to claim 6, wherein: the water supply mechanism (5) comprises a water suction pipe (501), a water supply pump (502) and a water supply pipe (503), one end of the water suction pipe (501) is fixedly communicated with the bottom of the left side of the water tank (9), the other end of the water suction pipe (501) is fixedly communicated with the water supply pump (502), the right side of the water supply pump (502) is fixedly connected with the cutting arm (22), one end of the water supply pipe (503) is fixedly communicated with the water supply pump (502), and the other end of the water supply pipe (503) is fixedly communicated with the cooling jacket (11).

9. An autofocus and automatic laser cutting device according to claim 6, wherein: the dust collector is characterized in that a filter screen (20) matched with the circulating mechanism (4) and the dust collection mechanism (3) is installed inside the water tank (9), and a sealing plate (17) is movably connected to the rear side of the water tank (9).