CN217412797U

CN217412797U - Initial focusing structure of ultrafast laser processing equipment

Info

Publication number: CN217412797U
Application number: CN202221397107.0U
Authority: CN
Inventors: 杨亚涛; 乐庸辉; 陶凯; 高峰
Original assignee: Shenzhen Dade Laser Technology Co ltd
Current assignee: Shenzhen Dade Laser Technology Co ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-09-13
Anticipated expiration: 2032-06-06

Abstract

The utility model relates to an initial structure of focusing of ultrafast laser processing equipment, belong to the technical field of laser processing equipment, which comprises a frame, be equipped with the laser head in the frame, drive arrangement and the lift platform that the drive laser head removed along the XY axle, drive arrangement is including removing the seat, be equipped with the driving piece on removing the seat, the output of driving piece is equipped with the lifter plate, the laser head is fixed on the lifter plate, wherein, the bottom of lifter plate is equipped with the range finding transmitter, last being equipped with of lift platform and range finding transmitter complex receiving plate, this application is for increasing the machining precision, and the work efficiency is improved, an initial structure of focusing of ultrafast laser processing equipment is provided.

Description

Initial focusing structure of ultrafast laser processing equipment

Technical Field

The application relates to the field of laser processing equipment, in particular to an initial focusing structure of ultrafast laser processing equipment.

Background

Ultrafast laser is one of the important development directions in the laser field, and as a new technical means, has significant advantages in the aspect of precision micromachining. When the focal position is lower than the surface of the workpiece, the area of a light spot penetrating through the surface of the workpiece is large, a large bell mouth is generated, and the processing depth is influenced by the reduction of energy density. Therefore, in general, the focus should be precisely positioned on the surface of the material to be processed or slightly below the surface of the material to be processed.

The traditional ultrafast laser processing equipment needs to manually focus the laser head once by an initial focusing distance before using and working, the focal length can be adjusted to a proper height, the initial manual focusing process is to lift the working platform to a proper position, manually place a focusing plate on the working platform and be positioned under the laser head, then adjust the position of a lifting platform to adjust the height of the focusing plate, so that the focusing plate reaches a zero point through a focusing inductor arranged at two sides, then place focusing glass with a determined focusing distance on the focusing plate, then finely adjust the height of the laser head by screwing an adjusting nut, so that the distance between the laser head and the focusing glass is close to the thickness of the focusing glass, and finally screw the adjusting nut to finish the initial manual focusing. However, errors are easy to occur when the initial focusing precision is manually adjusted, and meanwhile, the manual initial focusing process is complicated and the working efficiency is low.

Disclosure of Invention

In order to increase the machining precision and improve the working efficiency, the application provides an initial focusing structure of ultrafast laser machining equipment.

The application provides an initial focusing structure of ultrafast laser processing equipment adopts following technical scheme:

the utility model provides an ultrafast laser processing equipment's initial structure of focusing, includes the frame, be equipped with laser head, drive in the frame the drive arrangement and the lift platform that the XY axle removed are followed to the laser head, drive arrangement is including removing the seat, be equipped with the driving piece on removing the seat, the output of driving piece is equipped with the lifter plate, the laser head is fixed on the lifter plate, wherein, the bottom of lifter plate is equipped with the range finding transmitter, last being equipped with of lift platform with range finding transmitter complex receiving plate.

By adopting the technical scheme, the driving piece drives the lifting plate to enable the lifting plate to move up and down, the lifting plate drives the laser head to lift, so that the distance between the laser head and the lifting platform is adjusted, the distance measuring emitter arranged at the bottom of the lifting plate is utilized to enable the distance measuring emitter to measure the distance of the receiving plate arranged on the lifting platform, the accurate distance measurement of the relative distance between the laser head and the lifting platform is realized, and the processing precision is improved; meanwhile, the driving piece is used for replacing manual operation, the problem that the initial focusing of the laser head needs to be manually adjusted is solved, the automatic focusing of the initial distance of the laser head is achieved, and therefore the machining efficiency is improved.

Preferably, the driving device further comprises a transverse shaft driving mechanism and a longitudinal shaft driving mechanism, the longitudinal shaft driving mechanism is mounted on the frame, the transverse shaft driving mechanism is mounted on the longitudinal shaft driving mechanism, and the movable base is mounted on the transverse shaft driving mechanism.

By adopting the technical scheme, the transverse shaft driving mechanism is utilized to control the moving seat to move transversely on the rack, and the longitudinal shaft driving mechanism is utilized to control the transverse shaft driving mechanism to move longitudinally on the rack, so that the moving seat can drive the laser head to carry out work on a workpiece and drive the distance measuring transmitter to move to a position right above the receiving plate for distance measurement.

Preferably, the cross shaft driving mechanism comprises a cross column, first supports are arranged at two ends of the cross column, a screw rod arranged along the length direction of the cross column is rotatably connected to the first supports, a first driving motor is arranged at one end of the screw rod, and the first driving motor is fixed on the first supports; the transverse column is also provided with a first guide rail arranged along the axial direction of the screw rod, and the moving seat is in sliding fit with the first guide rail; the moving seat is provided with a nut seat, and the nut seat is in threaded connection with the screw rod.

By adopting the technical scheme, the first driving motor drives the screw rod to rotate, and the screw rod drives the nut seat in threaded fit with the screw rod, so that the nut seat drives the moving seat to move on the first guide rail as the transverse shaft.

Preferably, the longitudinal shaft driving mechanism comprises a conveying belt, a second support is arranged on the rack, a rotating rod is rotatably arranged on the second support, the conveying belt is sleeved on the rotating rod, a second driving motor is arranged on the second support, and the second driving motor drives the rotating rod to rotate; the frame is provided with a second guide rail, the transverse column is in sliding fit with the second guide rail, the transverse column is provided with a fixing piece, and the fixing piece is detachably arranged on the conveyor belt.

Through adopting above-mentioned technical scheme, the second driving motor drive bull stick rotates, and bull stick drive conveyer belt rotates, and then drives the spreader of fixed connection on the conveyer belt and remove on the second guide rail to the realization is removed the seat and is made the axis of ordinates and remove.

Preferably, the mounting includes fixed plate and grip block, the fixed plate is installed one side of spreader, the one end butt of fixed plate in the top surface of conveyer belt, the grip block passes through the bolt centre gripping the conveyer belt with the fixed plate is connected.

Through adopting above-mentioned technical scheme, utilize the mounting to realize the fixed connection of spreader and conveyer belt to make the conveyer belt do and pull and drive the spreader and remove on the third guide rail, realize the longitudinal displacement of spreader.

Preferably, one end of the lifting plate, which is close to the moving seat, is provided with a third guide rail, the moving seat is provided with a sliding groove matched with the third guide rail, and the third guide rail is in sliding fit in the sliding groove.

Through adopting above-mentioned technical scheme, utilize the third guide rail to carry on spacingly to the removal of lifter plate, reduce the lifter plate and produce the deflection in the lift displacement to keep the straightness that hangs down of laser head, reduce the deviation of laser head, thereby improve the accuracy.

Preferably, the surface array of lift platform is provided with the boss.

Through adopting above-mentioned technical scheme, utilize the boss to reduce the area of contact of work piece and lift platform, reduce the wearing and tearing to the work piece, prevent simultaneously that laser from taking place to intersect to lift platform to improve lift platform's life.

Preferably, the device further comprises a pair of eye sensors for detecting the lifting platform, and the pair of eye sensors are arranged on two sides of the rack.

Through adopting above-mentioned technical scheme, look at the effect of inductor and detect lift platform's height, when sensing lift platform to looking at the inductor, lift platform stops rising to inject lift platform's axial upper limit height, with the definition zero point.

In summary, the present application includes at least one of the following beneficial technical effects:

the distance measuring emitter is arranged at the bottom of the lifting plate, so that the distance measuring emitter measures the distance of the receiving plate arranged on the lifting platform, the accurate distance measurement of the relative distance between the laser head and the lifting platform is realized, and the processing precision is improved; meanwhile, the driving piece is used for replacing manual operation, the problem that the initial focusing of the laser head needs to be manually adjusted is solved, the automatic focusing of the initial distance of the laser head is achieved, and therefore the machining efficiency is improved.

Drawings

Fig. 1 is a schematic overall structure diagram (the device housing is hidden for better illustration) in the embodiment of the present application.

Fig. 2 is a partial sectional view in an embodiment of the present application.

Fig. 3 is an enlarged view a in the embodiment of the present application.

Fig. 4 is an enlarged view B in the embodiment of the present application.

Fig. 5 is an enlarged view C in the embodiment of the present application.

Description of reference numerals: 1. a frame; 2. a laser head; 3. a drive device; 31. a movable seat; 311. a nut seat; 32. a cross shaft drive mechanism; 321. a cross post; 322. a first support; 323. a screw rod; 324. a first drive motor; 325. a first guide rail; 33. a longitudinal axis drive mechanism; 331. a conveyor belt; 332. a second support; 333. a rotating rod; 334. a second drive motor; 335. a second guide rail; 34. a fixing member; 341. a fixing plate; 342. a clamping plate; 343. a bolt; 4. a lifting platform; 41. receiving a plate; 42. a boss; 5. a drive member; 6. a lifting plate; 61. a third guide rail; 7. a ranging transmitter; 8. a sight-seeing sensor.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses an initial focusing structure of ultrafast laser processing equipment.

Referring to fig. 1, an initial focusing structure of an ultrafast laser processing apparatus includes a frame 1, wherein a laser head 2, a driving device 3 for driving the laser head 2 to move along XY axes, and a lifting platform 4 are disposed on the frame 1.

In the embodiment, the surface array of the lifting platform 4 is provided with a plurality of bosses 42, the number of the bosses 42 is set according to the actual production condition, and is not specifically described in the embodiment; the cross section of the boss 42 is conical, and the top surface of the boss 42 is provided with a round angle.

The contact area between the workpiece and the lifting platform 4 is reduced by utilizing the boss 42, the abrasion to the workpiece is reduced, and meanwhile, the laser is prevented from intersecting the lifting platform 4, so that the service life of the lifting platform 4 is prolonged

Referring to fig. 1, the driving device 3 includes a horizontal axis driving mechanism 32 and a vertical axis driving mechanism 33, wherein, referring to fig. 1 and 4, the horizontal axis driving mechanism 32 includes a horizontal column 321, two first supports 322 are disposed at two ends of the horizontal column 321, a screw rod 323 disposed along the length direction of the horizontal column 321 is rotatably connected to the first supports 322, specifically, two ends of the screw rod 323 are respectively rotatably connected to the two first supports 322 at two ends of the horizontal column 321, one of the first supports 322 is fixedly connected to a first driving motor 324, and an output end of the first driving motor 324 is connected to the screw rod 323.

The top surface of the horizontal column 321 is provided with a first guide rail 325 arranged along the axial direction of the screw rod 323, the first guide rail 325 is slidably matched with a sliding seat, the sliding seat is provided with a moving seat 31, the moving seat 31 is provided with a through hole coaxially arranged with the screw rod 323, a nut seat 311 is arranged in the through hole, and the nut seat 311 is in threaded connection with the screw rod 323.

The first driving motor 324 drives the screw rod 323 to rotate, the screw rod 323 drives the nut seat 311 in threaded connection with the screw rod 323, and the nut seat 311 drives the movable seat 31 to move on the first guide rail 325, so that the movable seat 31 moves on the transverse shaft 321.

Referring to fig. 1 and 5, the longitudinal shaft driving mechanism 33 includes a conveying belt 331, the frame 1 is provided with two second supports 332, the two second supports 332 are respectively disposed at the front and rear ends of the frame 1, the second supports 332 are provided with two symmetrical bearing seats, and a rotating rod 333 is rotatably connected between the two bearing seats; the conveying belt 331 is sleeved between the two rotating rods 333 on the two second supports 332 to form a rotatable rotary traction belt.

Furthermore, two conveyor belts are arranged, the conveyor belts are arranged at two sides of the frame 1 by taking the middle point of the transverse column 321 as an axis,

wherein, a second driving motor 334 is arranged on the second support 332, an output shaft of the second driving motor 334 is connected with a belt pulley, a rotating rod 333 arranged on the same second support 332 as the second driving motor 334 is also provided with a belt pulley, a belt is connected between the two belt pulleys, and the rotating rod 333 on the same side as the second driving motor 334 extends to the second support 332 on the other side of the frame 1 to form a synchronous rod.

The rack 1 is provided with two second guide rails 335, the two second guide rails 335 are respectively arranged at two ends of the transverse column 321 with the middle point of the transverse column 321 as an axis, the bottom of the transverse column 321 is provided with a sliding seat in sliding fit with the second guide rails 335, the side surface of the transverse column 321 is provided with a fixing part 34, and the fixing part 34 is detachably mounted on the conveying belt 331.

Referring to fig. 4, in the present embodiment, the fixing member 34 includes a fixing plate 341 and a clamping plate 342, the fixing plate 341 is mounted on a side surface of the lateral column 321, one end of the fixing plate 341 abuts against an outer side surface of the conveying belt 331, the clamping plate 342 is disposed at a back side of the conveying belt 331 abutting against the fixing plate 341 to clamp the conveying belt 331, and the fixing plate 341 and the clamping plate 342 are fixedly connected by bolts 343 and nuts.

The second driving motor 334 drives the rotating rod 333 to rotate, and the rotating rod 333 rotates and drives the conveying belts 331 on both sides to rotate, so as to drive the transverse column 321 fixedly connected to the conveying belts 331 to move on the second guide rail 335, thereby realizing the movement of the longitudinal axis of the movable base 31.

Referring to fig. 1 and 2, frame 1 is last to be provided with and to be used for detecting focusing plate to look at inductor 8, and is specific, is provided with two to looking at inductor 8, and two are looked at inductor 8 and set up the middle part position in the both sides of frame 1 respectively, are the Z axle upper limit position of lift platform 4 and are lift platform 4's zero point position to looking at inductor 8, when sensing lift platform 4 to looking at inductor 8 promptly, lift platform 4 is in zero point position, and the relative distance of laser head 2 to lift platform 4 is the focus distance this moment.

Referring to fig. 2 and 3, the driving member 5 is disposed on the movable seat 31, and in the present embodiment, the driving member 5 is a driving cylinder; specifically, the driving cylinder is fixedly connected to one side of the movable base 31, an output shaft of the driving cylinder is perpendicular to the lifting platform 4, and a lifting plate 6 is disposed at an output end of the driving cylinder, wherein in this embodiment, the cross section of the lifting plate 6 is "L" shaped.

Referring to fig. 2, one end of the lifting plate 6 is connected with the output end of the driving cylinder, the laser head 2 is arranged at one side of the lifting plate 6, and the output end of the laser head 2 is perpendicular to the lifting platform 4.

Wherein, the bottom surface of lifter plate 6 is provided with range finding transmitter 7, and the middle part position of lift platform 4 is provided with receiving board 41, sets up the surplus through the control cabinet, makes the working distance of range finding transmitter 7 and receiving board 41 be the focus distance.

Through 5 drive lifter plates 6 of driving piece, make lifter plates 6 upper and lower displacement, lifter plates 6 drive laser head 2 and go up and down, and then realize adjusting the distance between laser head 2 and lift platform 4, utilize and installing ranging transmitter 7 in 6 bottoms of lifter plates, make ranging transmitter 7 to set up receiving plate 41 on lift platform 4 and range finding, realize the accurate range finding to the relative distance between laser head 2 and the lift platform 4.

Referring to fig. 2 and 3, in the present embodiment, one end of the lifting plate 6 close to the moving seat 31 is provided with a third guide rail 61, and the third guide rails 61 are provided with two, and are symmetrically arranged with the output shaft of the driving cylinder as a central axis; the movable seat 31 is provided with a sliding groove adapted to the third guide rail 61, and the third guide rail 61 is slidably fitted in the sliding groove.

Through utilizing third guide rail 61 to carry on spacingly to the removal of lifter plate 6, reduce lifter plate 6 and produce the deflection in the lift displacement to keep the straightness that hangs down of laser head 2, reduce laser head 2's deviation, thereby improve the accuracy.

The above are all preferred embodiments of the present application, and the present embodiment is only explained for the present application, and the protection scope of the present application is not limited by this, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an ultrafast laser processing equipment's initial focusing structure, includes frame (1), be equipped with laser head (2), drive in frame (1) drive arrangement (3) and lift platform (4) that laser head (2) removed along XY axle, a serial communication port, drive arrangement (3) are including removing seat (31), be equipped with driving piece (5) on removing seat (31), the output of driving piece (5) is equipped with lifter plate (6), laser head (2) are fixed on lifter plate (6), wherein, the bottom of lifter plate (6) is equipped with range finding transmitter (7), be equipped with on lift platform (4) with range finding transmitter (7) complex receiving plate (41).

2. The initial focusing structure of an ultrafast laser processing apparatus as claimed in claim 1, wherein said driving device (3) further comprises a horizontal axis driving mechanism (32) and a vertical axis driving mechanism (33), said vertical axis driving mechanism (33) being mounted on said frame (1), said horizontal axis driving mechanism (32) being mounted on said vertical axis driving mechanism (33), said movable base (31) being mounted on said horizontal axis driving mechanism (32).

3. The initial focusing structure of the ultrafast laser processing apparatus of claim 2, wherein the cross shaft driving mechanism (32) comprises a cross post (321), wherein first supports (322) are disposed at two ends of the cross post (321), a screw rod (323) disposed along a length direction of the cross post (321) is rotatably connected to the first supports (322), a first driving motor (324) is disposed at one end of the screw rod (323), and the first driving motor (324) is fixed on the first supports (322); the transverse column (321) is also provided with a first guide rail (325) arranged along the axial direction of the screw rod (323), and the moving seat (31) is in sliding fit with the first guide rail (325); the moving seat (31) is provided with a nut seat (311), and the nut seat (311) is in threaded connection with the screw rod (323).

4. The initial focusing structure of the ultrafast laser processing device according to claim 3, wherein the longitudinal axis driving mechanism (33) comprises a conveyor belt (331), the frame (1) is provided with a second support (332), the second support (332) is rotatably provided with a rotating rod (333), the conveyor belt (331) is sleeved on the rotating rod (333), the second support (332) is provided with a second driving motor (334), and the second driving motor (334) drives the rotating rod (333) to rotate; be equipped with second guide rail (335) on frame (1), spreader (321) sliding fit is in on second guide rail (335), be equipped with mounting (34) on spreader (321), mounting (34) are detachable installs on conveyer belt (331).

5. The initial focusing structure of an ultrafast laser processing apparatus as claimed in claim 4, wherein the fixing member (34) comprises a fixing plate (341) and a clamping plate (342), the fixing plate (341) is installed at one side of the cross-post (321), one end of the fixing plate (341) abuts against a top surface of the conveyor belt (331), and the clamping plate (342) clamps the conveyor belt (331) to be connected with the fixing plate (341) through a bolt (343).

6. The initial focusing structure of the ultrafast laser processing device as claimed in claim 1, wherein a third guide rail (61) is disposed at one end of the lifting plate (6) close to the movable base (31), a sliding slot adapted to the third guide rail (61) is formed in the movable base (31), and the third guide rail (61) is slidably fitted in the sliding slot.

7. The initial focusing structure of ultrafast laser processing equipment according to claim 1, wherein said surface array of said elevating platform (4) is provided with bosses (42).

8. The initial focusing structure of ultrafast laser processing equipment according to claim 1, further comprising a pair of vision sensors (8) for detecting said lifting platform (4), said pair of vision sensors (8) being disposed on both sides of said machine frame (1).