Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a dust prevention method for a Z-axis component of a laser cutting machine, which comprises the steps of adjusting air pressure, cutting a workpiece by laser, blowing while cutting the workpiece by the laser, and delaying to stop blowing after the cutting of the laser is stopped.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a dust prevention method for a Z-axis component of a laser cutting machine comprises a laser cutting head, a mounting seat and the Z-axis component, wherein the Z-axis component comprises a driving device, a guide rail and a sliding block, the guide rail is arranged on the front side of the mounting seat and extends along the Z-axis direction, the sliding block is arranged on the rear side of the laser cutting head, the sliding block is sleeved outside the guide rail, the driving device is arranged on the mounting seat and is connected with the laser cutting head, the driving device drives the laser cutting head to move along the Z-axis direction, the laser cutting machine further comprises an air compressor, an electromagnetic valve and a pressure controller, a plurality of first air nozzles are arranged above the laser cutting head, a plurality of second air nozzles are arranged above the guide rail, and the first air nozzles face towards the laser cutting head, the second air nozzle faces the guide rail, the air compressor is connected with the electromagnetic valve, the electromagnetic valve is connected with the pressure controller, and the pressure controller is connected with the first air nozzle and the second air nozzle;
the dust prevention method comprises the following steps:
step 1: starting the laser cutting head to perform laser cutting on the workpiece;
step 2: the laser cutting head is started, the electromagnetic valve is electrified, the first air nozzle blows air towards the laser cutting head, and the second air nozzle blows air towards the Z-axis assembly;
and step 3: the first air nozzle (6) and the second air nozzle (9) blow out air pressure P and the power Q of the laser cutting head (1) satisfy the formula in numerical value:
wherein the unit of the air pressure P is 0.1MPa, the unit of the power Q is KW, and the air pressure of the air blown out by the first air nozzle (6) and the second air nozzle (9) is adjusted according to the power of the laser cutting head (1);
and 4, step 4: after the workpiece is cut, the working personnel stop the laser cutting head to work, and the electromagnetic valve delays T1The time is cut off, the first air nozzle and the second air nozzle are at the T point that the electromagnetic valve delays the power off1Blowing is still continued within the time;
and 5: laser cutting head stop work T1And after time, the electromagnetic valve is powered off, and the first air nozzle and the second air nozzle stop blowing air.
As preferred, first air cock reaches the second air cock all includes the gas outlet, the axis of gas outlet is on a parallel with the Z axle, through setting up like this, first air cock just moves towards ground the laser cutting head, the second air cock just moves towards ground the guide rail, first air cock reaches the vertical downwards of second air cock blows, and the effect of vertical downward wind pressure is applyed to the dust and the waste residue that produce upwards drift in the laser cutting process, further improves dustproof effect.
As preferred, first air cock is equipped with threely, three first air cock is located respectively the left side, the right side and the front side of laser cutting head, through setting up like this, because dust and waste residue by the position department that the laser cutting head is cutting the work piece produces, is located the left side, the right side and the front side of laser cutting head top all are equipped with first air cock, vertical decurrent wind pressure is applyed to diversified production department to dust and waste residue, just avoids from production department dust and waste residue drift upward, further improve dustproof effect.
Preferably, a first mounting plate and a second mounting plate are arranged on the laser cutting head, the first mounting plate and the second mounting plate respectively comprise a vertical plate connected with the laser cutting head and a transverse plate used for mounting the first air nozzle, the vertical plate and the transverse plate are perpendicular to each other, the transverse plate of the second mounting plate is semicircular, the first air nozzle positioned on the left side of the laser cutting head is arranged on the transverse plate of the first mounting plate, the first air nozzles positioned on the right side and the front side of the laser cutting head are arranged on the transverse plate of the second mounting plate, and through the arrangement, the first mounting plate and the second mounting plate are arranged to facilitate mounting of the first air nozzle, the original Z-axis assembly structure does not need to be changed, and the structure is simple; because the top of laser cutting head need be connected optic fibre, the diaphragm semicircular in shape of second mounting panel, for optic fibre with the position is kept away in the connection of laser cutting head, makes overall structure more reasonable.
Preferably, the guide rails are arranged on the left side and the right side of the driving device, the third mounting plates are arranged on the guide rails on the two sides of the mounting seat, the second air nozzles are arranged on the third mounting plates on the two sides, and the guide rails are arranged on the left side and the right side of the driving device, so that the laser cutting head can move more smoothly along the Z axis; the third mounting plate is arranged, and the second air nozzle can be conveniently mounted in the same way as the third mounting plate; and the guide rail on both sides all is equipped with the second air cock for the scope that the second air cock produced atmospheric pressure downwards is wider, makes drive arrangement, the guide rail reaches better dustproof effect.
Preferably, the third mounting panel with the terminal surface interval of guide rail sets up, through setting up like this, avoids the third mounting panel with too close to between the guide rail, make the gas that the second air cock blew out is blockked up the terminal surface of guide rail, reduces the atmospheric pressure that the second air cock produced downwards.
Preferably, the laser cutting machine further comprises a dryer, the air compressor is connected with the dryer, the dryer is connected with the electromagnetic valve, and through the arrangement, water vapor is mixed in the air, particularly the air compressed by the air compressor has high water vapor content, so that the dryer can remove the water vapor of the compressed air, and the influence of the water vapor of the compressed air on the normal operation of the laser cutting machine after long-term use is avoided; if the dryer is not arranged, the guide rail or the sliding block can be rusted by water vapor in the compressed air after long-term use, so that the laser cutting head cannot move smoothly or even cannot move.
Preferably, the driving device comprises a servo motor, a ball screw and a screw nut, the servo motor is fixedly arranged at the front side of the mounting seat, the ball screw is rotatably arranged at the front side of the mounting seat, the servo motor is fixedly connected with the ball screw, the screw nut is sleeved on the ball screw and is fixedly connected with the laser cutting head, through the arrangement, the servo motor drives the ball screw to rotate, and through the matching of the ball screw and the screw nut, the screw nut moves up and down along the axis of the ball screw, so that the laser cutting head can be accurately driven to move along the Z-axis direction by the screw nut.
Preferably, laser cutting machine still includes preceding housing and tow chain, preceding housing sets up the front side of laser cutting head, just preceding housing cover is located first air cock reaches outside the second air cock, the both ends of tow chain respectively with preceding housing with the mount pad is connected, through setting up like this, preceding housing cover is located first air cock reaches outside the second air cock, just the tow chain is used for arranging of trachea, optic fibre and cable for laser cutting machine Z axle dustproof mechanism's outward appearance is succinct and pleasing to the eye.
Compared with the prior art, the invention has the beneficial technical effects that:
adopt this dustproof method when laser cutting head carries out laser cutting to the work piece, first air cock reaches the second air cock moves towards respectively laser cutting head reaches Z axle subassembly blows, and dust and waste residue quilt that produce in the laser cutting process first air cock reaches decurrent atmospheric pressure is applyed to the second air cock, avoids dust and waste residue upwards to fly away to the Z axle subassembly on, overall structure is simple, simple to operate to dustproof effectual, the problem of avoiding bringing because of dust and waste residue need be dismantled the maintenance and change, improves production efficiency, reduction in production cost.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.
Referring to fig. 1-4, this embodiment discloses a dust-proof mechanism for a Z-axis assembly of a laser cutting machine, the laser cutting machine includes a bed, a beam, a dust-collecting device, a laser cutting head 1, a mounting seat 5 and a Z-axis assembly, the dust-collecting device is disposed in the bed, the beam is slidably disposed on the bed, the beam can slide along the length direction of the bed, the dust-collecting device and the beam are disposed in the prior art, and are not described herein again, the mounting seat 5 is slidably disposed on the beam, the mounting seat 5 can slide along the length direction of the beam, the Z-axis assembly includes a driving device, a guide rail 4 and a slider 3, the guide rail 4 is disposed at the front side of the mounting seat 5, the guide rail 4 extends along the Z-axis direction, the Z-axis is an axis extending along the vertical direction, the slider 3 is disposed at the rear side of the laser cutting head 1, the slider 3 is adapted to the guide rail 4, the slider 3 is sleeved outside the guide rail 4, the driving device is arranged on the mounting seat 5, the driving device is connected with the laser cutting head 1, the driving device drives the laser cutting head 1 to move along the Z-axis direction, specifically, a guide rail seat is arranged on the front side of the mounting seat 5, a guide rail 4 is arranged on the front side of the guide rail seat, the mounting seat 5 and the guide rail seat are connected with the guide rail 4 through screws, the guide rail seat is arranged to facilitate adjustment of the distance between the guide rail 4 and the laser cutting head 1, a Z-axis sliding plate 2 is arranged on the rear side of the laser cutting head 1, the laser cutting head 1 is fixedly connected with the Z-axis sliding plate 2, a sliding block 3 is arranged on one side of the Z-axis sliding plate 2 facing the mounting seat 5, and two sliding blocks 3 arranged along the direction of the guide rail 4 are arranged on each corresponding guide rail 4, so that the laser cutting head 1 can slide more smoothly, the laser cutting machine further comprises an air compressor, a solenoid valve and a pressure controller, the air compressor, The electromagnetic valve and the pressure controller are arranged on the lathe bed, a plurality of first air nozzles 6 are arranged above the laser cutting head 1, a plurality of second air nozzles 9 are arranged above the guide rail 4, the first air nozzles 6 face the laser cutting head 1, the second air nozzles 9 face the guide rail 4, the outlet end of the air compressor is connected with the inlet end of the electromagnetic valve, the outlet end of the electromagnetic valve is connected with the inlet end of the pressure controller, the outlet end of the pressure controller is connected with the air inlets of the first air nozzles 6 and the second air nozzles 9, the electromagnetic valve and the pressure controller are electrically connected with the control center of the laser cutting machine, the electromagnetic valve can control the first air nozzles 6 and the second air nozzles 9 to blow air through a logic program, the automation degree of the Z-axis dustproof mechanism of the laser cutting machine is improved, and the pressure controller can adjust the air pressure of the air blown from the first air nozzles 6 and the second air nozzles 9, the air pressure is adjusted according to actual conditions, and the air compressor, the electromagnetic valve, the pressure controller, the first air nozzle 6 and the second air nozzle 9 are connected through air pipes.
Further concretely describes, first air cock 6 and second air cock 9 all include the gas outlet, the axis of the gas outlet of first air cock 6 and second air cock 9 all is on a parallel with the Z axle, first air cock 6 is just facing ground towards laser cutting head 1 promptly, second air cock 9 is just facing ground towards guide rail 4, first air cock 6 and the vertical downward gas blowing of second air cock 9, produce the effect of vertical downward wind pressure to dust and the waste residue that upwards wafts among the laser cutting process, compare and apply the effect of slant downward wind pressure, further improve dustproof effect, also avoid slant downward wind pressure to blow dust and waste residue to all around.
In this embodiment, first air cock 6 is equipped with threely, and three first air cock 6 is located the left side of laser cutting head 1, right side and front side respectively, because dust and waste residue are produced by the position department that laser cutting head 1 is cutting the work piece, and the left side, the right side and the front side that are located 1 top of laser cutting head all are equipped with first air cock 6, and vertical decurrent wind pressure is applyed to the production department of diversified dust and waste residue, just avoid dust and waste residue to drift upwards from producing the department, further improve dustproof effect.
The laser cutting head 1 is provided with a first mounting plate 7 and a second mounting plate 8, the first mounting plate 7 and the second mounting plate 8 are both made of sheet metal and are convenient to process, the first mounting plate 7 and the second mounting plate 8 both comprise a vertical plate connected with the laser cutting head 1 and a transverse plate used for mounting the first air nozzle 6, the vertical plate and the transverse plate are mutually vertical, the vertical plates of the first mounting plate 7 and the second mounting plate 8 are fixedly connected with the Z-axis sliding plate 2, the first mounting plate 7 and the second mounting plate 8 are positioned at the left side and the right side of the laser cutting head 1, the transverse plate of the second mounting plate 8 is semicircular, the first air nozzle 6 positioned at the left side of the laser cutting head 1 is arranged on the transverse plate of the first mounting plate 7, specifically, a through internal thread hole is arranged at a corresponding position on the transverse plate of the first mounting plate 7, an external thread matched with the internal thread hole is arranged on the peripheral wall of an air outlet of the first air nozzle 6, the first air nozzle 6 is fixedly connected with the transverse plate of the first mounting plate 7 through a thread, the following air nozzles are connected with the mounting plate in the same way, and are not described again, the first air nozzles 6 positioned on the right side and the front side of the laser cutting head 1 are arranged on the transverse plate of the second mounting plate 8, the first mounting plate 7 and the second mounting plate 8 are arranged, so that the first air nozzles 6 can be conveniently mounted, the original Z shaft assembly structure does not need to be changed, and the structure is simple; because the top of laser cutting head 1 need be connected optic fibre, the diaphragm semicircular in shape of second mounting panel 8 keeps away the position for being connected of optic fibre and laser cutting head 1, makes overall structure more reasonable.
The left side and the right side of the driving device are both provided with guide rails 4, the guide rails 4 on the two sides of the mounting seat 5 are both provided with third mounting plates 10, the third mounting plates 10 are also made of metal plates and are convenient to process, the third mounting plates 10 on the two sides are both provided with second air nozzles 9, and the guide rails 4 are arranged on the left side and the right side of the driving device, so that the laser cutting head 1 can move along the Z axis more smoothly; be equipped with third mounting panel 10, the installation of the second air cock 9 of being convenient for to all be equipped with second air cock 9 on the guide rail 4 of both sides, make the scope that second air cock 9 produced atmospheric pressure downwards wider, make ball screw 14, screw-nut 15, guide rail 4 and slider 3 reach better dustproof effect.
The third mounting plate 10 is arranged at an interval with the end face of the guide rail 4, and the interval between the third mounting plate 10 and the end face of the guide rail 4 is 10-20mm, so that the third mounting plate 10 is prevented from being too close to the guide rail 4, the air blown out by the second air nozzle 9 is blocked by the end face of the guide rail 4, and the air pressure generated downwards by the second air nozzle 9 is reduced.
The laser cutting machine further comprises a dryer, the dryer is arranged between the air compressor and the electromagnetic valve, the outlet end of the air compressor is connected with the inlet end of the dryer through an air pipe, the outlet end of the dryer is connected with the inlet end of the electromagnetic valve through the air pipe, and the dryer is arranged to remove water vapor of compressed air due to the fact that water vapor is mixed in the air, particularly the air compressed by the air compressor is high in water vapor content, so that the problem that the water vapor of the compressed air influences the normal work of the laser cutting machine after long-term use is avoided; if no dryer is arranged, water vapor in the compressed air can rust the guide rail 4 or the sliding block 3 after long-term use, so that the laser cutting head 1 cannot move smoothly or even cannot move.
The driving device comprises a servo motor 11, a ball screw 14 and a screw nut 15, the servo motor 11 is fixedly arranged at the front side of the mounting seat 5, the servo motor 11 is fixedly connected with the mounting seat 5 through a motor seat, the ball screw 14 is arranged at the front side of the mounting seat 5, the ball screw 14 is rotatably connected with the mounting seat 5, the axis of the ball screw 14 is parallel to the Z axis, the output shaft of the servo motor 11 is fixedly connected with the ball screw 14 through a coupler, the screw nut 15 is sleeved on the ball screw 14, and the screw nut 15 is fixedly connected with the Z-axis sliding plate 2, the servo motor 11 drives the ball screw 14 to rotate, the ball screw 14 is matched with the screw nut 15 to convert the rotary motion into the linear motion of the screw nut 15, and the screw nut 15 drives the Z-axis sliding plate 2 to move along the Z-axis direction, so that the laser cutting head 1 is accurately driven to move along the Z-axis direction.
Laser pipe cutting machine Z axle dustproof mechanism still includes preceding housing 12 and tow chain 13, and preceding housing 12 sets up the front side at laser cutting head 1, particularly, preceding housing 12 and Z axle slide 2's fixed connection, and outside first air cock 6 and second air cock 9 were located to preceding housing 12 cover, the both ends of tow chain 13 are connected with preceding housing 12 and mount pad 5 respectively, trachea, cable and optic fibre all wear to locate in tow chain 13 for laser cutting machine Z axle dustproof mechanism's outward appearance is succinct and pleasing to the eye.
The dust removal method for the Z-axis component of the laser cutting machine comprises the following steps:
step 1: the worker starts the laser cutting 1 to perform laser cutting on the workpiece;
step 2: when the laser cutting head 1 is started, the electromagnetic valve is controlled to be electrified through a logic program so that the outlet end is opened, the first air nozzle 6 blows air towards the laser cutting head 1, the second air nozzle 9 blows air towards the Z shaft assembly, downward air pressure is applied to dust and waste residues generated in the laser cutting process, and the dust and the waste residues are prevented from floating upwards onto the Z shaft assembly;
and step 3: along with the increase of the cutting power of the laser cutting head 1, the more dust and waste residue are generated in the laser cutting process, the air pressure of the first air nozzle 6 and the second air nozzle 9 needs to be increased to ensure that the dust and waste residue generated in the cutting process are blown downwards, and if the air pressure of the air blown out by the first air nozzle 6 and the second air nozzle 9 is too small, the dust and waste residue generated in the laser cutting process cannot be completely blown away downwards; if first air cock 6 and second air cock 9 blow out gaseous atmospheric pressure too big, then extravagant energy consumption to probably reduce the light-emitting temperature of laser cutting head 1, thereby reduce the quality of cutting, obtain the corresponding relation of laser cutting head 1 power and reaching dustproof effect minimum atmospheric pressure value through actual test, refer to following list 1:
TABLE 1
Serial number
|
Laser cutting head power Q (KW)
|
Air tap lowest pressure P (0.1MPa)
|
1
|
3
|
2.8
|
2
|
4
|
3.2
|
3
|
5
|
3.5
|
4
|
6
|
4.0
|
5
|
7
|
4.4
|
6
|
8
|
4.7
|
7
|
9
|
5.1
|
8
|
10
|
5.4
|
9
|
11
|
5.6
|
10
|
12
|
6.2 |
Q and P satisfy the linear relation, reachs through the analysis, and
first air cock 6 and second air cock 9 blow off gaseous atmospheric pressure P and the power Q of
laser cutting head 1 satisfy the formula in numerical value:
the unit of the air pressure P is 0.1MPa, the unit of the power Q is KW, the air pressures of air blown out from the
first air nozzle 6 and the second air nozzle 9 are adjusted in real time according to the power of the
laser cutting head 1, the specific adjusting method is adopted, the cutting power of the
laser cutting head 1 is read by the control center in real time, the required air pressure value is obtained according to the formula and corresponds to an electric signal, the electric signal is fed back to the pressure controller by the control center, and the pressure controller obtains the electric signalAdjusting the air pressure at the outlet end of the pressure controller to ensure that the air pressure values of the air blown out by the
first air nozzle 6 and the second air nozzle 9 are the corresponding minimum air pressure value of the
laser cutting head 1 under the current cutting power;
and 4, step 4: after the workpiece is cut, the worker stops the laser cutting head 1, and at the same time, the solenoid valve is controlled by the logic program to delay T1T for delaying power failure of electromagnetic valve by first air nozzle 6 and second air nozzle 9 after power failure in time1Blowing is continued within the time, so that dust and waste residues are completely and fully blown away downwards;
and 5: after the laser cutting head 1 stops working, the electromagnetic valve passes through T1After the time, the power is cut off to close the outlet end, the first air nozzle 6 and the second air nozzle 9 stop blowing air, and after the actual test, T1Is 3-5s, preferably, T1And 3s is set, so that the power consumption is reduced on the premise of completely and fully blowing away dust and waste residues downwards after the laser cutting head 1 is stopped.
The dust and waste residue blown away downwards by the first air nozzle 6 and the second air nozzle 9 are absorbed and collected by a dust suction device, and the dust suction device is the prior art and is not described again here.
Blow towards laser cutting head 1 and Z axle subassembly respectively through first air cock 6 and second air cock 9, dust and waste residue that produce are applyed decurrent atmospheric pressure by first air cock 6 and second air cock 9 in the laser cutting process, avoid dust and waste residue upwards to fly away to the Z axle subassembly on, overall structure is simple, simple to operate, dustproof effectual moreover, the problem of avoiding bringing because of dust and waste residue need be dismantled the maintenance and change, improves production efficiency, reduction in production cost.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.