CN109848585B - Laser pipe cutting machine and pipe cutting method thereof - Google Patents

Laser pipe cutting machine and pipe cutting method thereof Download PDF

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Publication number
CN109848585B
CN109848585B CN201910280625.0A CN201910280625A CN109848585B CN 109848585 B CN109848585 B CN 109848585B CN 201910280625 A CN201910280625 A CN 201910280625A CN 109848585 B CN109848585 B CN 109848585B
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chuck
pipe
laser head
laser
driving motor
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CN109848585A (en
Inventor
姚玉东
尹怀化
蔡永帮
李荣飞
刘展鹏
刘南麟
何忠宝
周伟
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DONGGUAN GLORYSTAR LASER TECHNOLOGY CO LTD
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DONGGUAN GLORYSTAR LASER TECHNOLOGY CO LTD
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Abstract

The invention discloses a laser pipe cutting machine which comprises a base, a first chuck, a second chuck, a third chuck, a fourth chuck and a laser head, wherein the first chuck, the second chuck, the third chuck and the fourth chuck are all arranged on the base in a sliding mode, the first chuck and the second chuck are arranged at two ends of the base, the third chuck is arranged between the first chuck and the second chuck, the fourth chuck is arranged between the first chuck and the third chuck, the laser head is arranged at the upper end of the base, and the laser head can move along the length direction of the base. The invention can realize real zero tailing cutting, reduce raw material consumption, is environment-friendly and energy-saving, and can reduce production cost; the pipe can be well clamped, the phenomenon of straw ropes during high-speed pipe cutting can be effectively avoided, and the cutting quality can be effectively improved; the pipe is well supported, and the phenomenon of crowbar caused by external gravity center can be effectively avoided, so that the laser pipe cutting machine operates more stably.

Description

Laser pipe cutting machine and pipe cutting method thereof
Technical Field
The invention relates to the technical field of laser pipe cutting equipment, in particular to a laser pipe cutting machine and a pipe cutting method thereof.
Background
A laser pipe cutting machine, which is a machine that cuts a pipe using laser, is used in the field of pipe processing on a large scale. The laser pipe cutting machine on the market at present is generally distributed with a two-chuck pipe cutting machine represented by a general fast machine and a BLM, has the characteristics of simple and stable distribution, is also a reference design object for most of the same lines in China, but has a plurality of defects, and the following defects are particularly obvious: 1. the 'cutting dead zone' is generated, so that raw materials are consumed, and huge waste is caused; 2. when the slender small pipe is cut, the effect of cutting the small pipe at high speed is poor due to the influence of the 'straw rope phenomenon'; 3. under the extreme conditions that the pipe is not cut at all and holes are formed in all axial directions of the pipe, the pipe is difficult to be well supported and supported, so that the quality of cutting is affected; 4. when an overweight thick pipe is cut, because the gravity center of the pipe exceeds the supporting points of the two chucks, the pipe has a crowbar phenomenon due to the fact that the gravity center is external.
Disclosure of Invention
The invention aims to solve the technical problems and aims to provide a laser pipe cutting machine and a pipe cutting method thereof, which can solve one or more of the problems.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a laser pipe cutting machine, includes base, first chuck, second chuck, third chuck, fourth chuck and laser head, first chuck, second chuck, third chuck and fourth chuck all slidable set up in the base, the both ends of base are located to first chuck and second chuck, the third chuck is located between first chuck and the second chuck, the fourth chuck is located between first chuck and the third chuck, the upper end of base is located to the laser head, just the laser head can follow base length direction and remove.
As a preferred scheme, the side of base is equipped with two first slide rails, and two first slide rails are equipped with the upper and lower both ends of base, and a first slide rail slip is installed four at least first slides, first chuck, second chuck, third chuck and fourth chuck respectively with first slide fixed connection, the side of base still is equipped with first rack, the upper end of base is located to first rack, all be equipped with drive assembly on first chuck, second chuck, third chuck and the fourth chuck, drive assembly includes first driving motor and first gear, the output shaft fixed connection of first gear and first driving motor, first gear and first rack meshing.
As a preferred scheme, the laser pipe cutting machine still includes X axle actuating mechanism, X axle actuating mechanism includes mount pad, second driving motor, second rack, second gear and two second slide rails, the top surface of base is installed to the second slide rail, and the front and back both ends of base are located to two second slide rails, the second slide rail has slidingly been installed the second slide, mount pad and second slide fixed connection, the laser head is located on the mount pad, the top surface of base is located to the second rack, the rear end of base is located to the second rack, second driving motor installs on the mount pad, second gear and second driving motor's output shaft fixed connection, second gear and second rack meshing.
As a preferred scheme, the laser pipe cutting machine further comprises a Y-axis driving mechanism, the Y-axis driving mechanism comprises a first mounting plate, a third driving motor and a first screw rod arranged along the front-back direction, the first mounting plate is fixedly connected with a mounting seat, the first screw rod and the third driving motor are fixedly mounted on the first mounting plate, the first screw rod is fixedly connected with an output shaft of the third driving motor, a first screw rod sliding seat is slidably arranged on the first screw rod, and the laser head is arranged on the first screw rod sliding seat.
As a preferred scheme, the laser pipe cutting machine still includes Z axle actuating mechanism, Z axle actuating mechanism includes second mounting panel, third mounting panel, fourth driving motor and along the second lead screw of vertical direction setting, second mounting panel and first lead screw slide fixed connection, second lead screw and fourth driving motor fixed mounting are on the second mounting panel, second lead screw and fourth driving motor's output shaft fixed connection, the last slip of second lead screw is provided with second lead screw slide, third mounting panel and second lead screw slide fixed connection, the laser head is fixed to be installed on the third mounting panel.
As a preferred scheme, Y axle actuating mechanism still includes the third slide rail, the third slide rail is located on the first mounting panel, third slide rail and first lead screw parallel arrangement, the third slide rail is two, and two third slide rails divide to locate the left and right sides of first lead screw, slide on the third slide rail and be provided with the third slide, third slide and second mounting panel fixed connection.
As a preferred scheme, Z axle actuating mechanism still includes the fourth slide rail, the fourth slide rail is located on the second mounting panel, fourth slide rail and second lead screw parallel arrangement, the fourth slide rail is two, and two fourth slide rails divide to locate the left and right sides of second lead screw, slide on the fourth slide rail and be provided with the fourth slide, fourth slide and third mounting panel fixed connection.
As a preferable scheme, when the laser head moves to the highest position in the vertical direction, the bottom end of the laser head is higher than the top ends of the third chuck and the fourth chuck.
As a preferred scheme, the laser pipe cutting machine further comprises a control device, the first chuck, the second chuck, the third chuck and the fourth chuck are respectively provided with a clamp and a fifth driving motor for driving the clamp to open or close, and the first driving motor, the second driving motor, the third driving motor, the fourth driving motor and the fifth driving motor are electrically connected with the control device.
A pipe cutting method of a laser pipe cutting machine, based on the laser pipe cutting machine as described above, the pipe cutting method comprising the steps of:
step A, starting a control device, wherein the control device controls the first chuck to move to the leftmost side of the base, and controls the second chuck, the third chuck, the fourth chuck and the laser head to move to the rightmost side of the base;
b, inputting the cutting length to a control device, judging whether the cutting length is smaller than a first length threshold by the control device, if so, entering the step C, and if not, entering the step D;
c, placing the pipe, controlling the leftmost end of the pipe clamped by the first chuck by the control device, moving the third chuck, the fourth chuck and the laser head leftwards to enable the laser head to move to a cutting length, enabling the length of the pipe extending out of the third chuck to be larger than the cutting length, enabling the laser head to be at a certain distance from the third chuck, enabling the fourth chuck to be located at the middle position of the first chuck and the third chuck, and entering the step E;
step D, placing the pipe, controlling the leftmost end of the pipe to be clamped by the first chuck by the control device, controlling the rightmost end of the pipe to be clamped by the second chuck, then moving the third chuck, the fourth chuck and the laser head leftwards to enable the laser head to move to a cutting length, enabling a certain distance to be reserved between the fourth chuck and the laser head, enabling the laser head to emit laser to cut the pipe by the third chuck at the middle position of the second chuck and the fourth chuck, and then entering the step K;
e, the control device judges whether the length of the pipe extending out of the third chuck is larger than a second length threshold value, if yes, the control device controls the second chuck to move leftwards to clamp the right end of the pipe, then a laser head is started, the laser head emits laser to cut the pipe, and then the step F is carried out; if not, starting a laser head, sending laser by the laser head to cut the pipe, and then entering the step F;
step F, the control device judges whether the length of the residual pipe is smaller than a third length threshold value, if yes, the step H is entered, and if not, the step G is entered;
step G, the control device controls the third chuck and the fourth chuck to loosen the pipe, the laser head, the third chuck and the fourth chuck simultaneously move leftwards until the laser head moves to the cutting length again, the length of the right end of the pipe extending from the third chuck again is consistent with the length of the right end of the pipe extending from the third chuck in the step C, the fourth chuck is positioned in the middle of the first chuck and the third chuck again, the laser head is started again to cut the pipe, and then the step F is started;
step H, the control device controls the first chuck to loosen the pipe, the second chuck moves leftwards to clamp the right end of the pipe, the third chuck and the fourth chuck loosen the pipe, then the third chuck and the fourth chuck simultaneously move rightwards, the laser head moves leftwards until the distance from the left side of the pipe to the laser head is a cutting length, the fourth chuck moves to the right side of the laser head and keeps a certain distance from the laser head, the third chuck is positioned between the second chuck and the fourth chuck, and then the laser head is started to cut the pipe, and step I is entered;
step I, judging whether the length of the residual pipe is smaller than the cutting length or not by the control device, if yes, controlling the third chuck and the fourth chuck to loosen the pipe, enabling the second chuck to clamp the pipe to move rightwards until the left end of the pipe is separated from the third chuck, then controlling the second chuck to loosen the pipe, and controlling the second chuck to move rightwards at a high speed, and if not, entering the step J;
step J, the control device controls the third chuck and the fourth chuck to loosen the pipe, the third chuck, the fourth chuck and the laser head move rightward at the same time until the distance from the left side of the pipe to the laser head is the cutting length, the fourth chuck moves to the right side of the laser head and keeps a certain distance from the laser head, the third chuck is positioned between the second chuck and the fourth chuck, then the laser head is started again to cut the pipe, and then the step I is carried out;
k, the control device controls the first chuck, the third chuck and the fourth chuck to loosen the pipe, the second chuck clamps the pipe to move rightwards until the left end of the pipe is separated from the third chuck, then the second chuck is controlled to loosen the pipe, and the second chuck is controlled to move rightwards at a high speed;
in the step G, the laser head and the third chuck move synchronously, and in the step J, the laser head and the fourth chuck move synchronously.
The beneficial effects of the invention are as follows: 1. the real zero tailing cutting is realized, the raw material consumption is reduced, the environment is protected, the energy is saved, and the production cost can be reduced; 2. the pipe can be well clamped, the phenomenon of straw ropes during high-speed pipe cutting can be effectively avoided, and the cutting quality can be effectively improved; 3. the pipe can be well supported, and the phenomenon of crowbar caused by external gravity center can be effectively avoided, so that the laser pipe cutting machine can be operated more stably.
Drawings
FIG. 1 is an assembled block diagram of an embodiment of the present invention;
FIG. 2 is an assembled structure of the first rail, the first carriage, the first rack and the driving assembly according to the present invention;
FIG. 3 is an assembled structure diagram of the Y-axis driving mechanism and the Z-axis driving mechanism of the present invention;
FIG. 4 is a schematic view of an initial state of a laser pipe cutter according to the present invention;
FIG. 5 is a schematic view of a laser pipe cutting machine according to the present invention in a use state when the cutting length is less than a first length threshold;
FIG. 6 is a schematic view of a laser pipe cutting machine according to the present invention in use when the cutting length is greater than a second length threshold;
FIG. 7 is a schematic view showing the use state of the laser pipe cutting machine according to the present invention when the pipe length is short to a certain extent;
FIG. 8 is a schematic view showing the use state of the laser pipe cutting machine according to the present invention when the cutting length is not less than the first length threshold or the cutting process is not required to completely cut the pipe;
FIG. 9 is a schematic diagram of the laser pipe cutting machine of the present invention in a blanking state after cutting a long pipe or finishing the machining of a pipe without completely cutting the pipe;
FIG. 10 is a flow chart of a pipe cutting method of the laser pipe cutting machine of the invention.
In the figure: the laser head comprises a base, a 2-first chuck, a 3-second chuck, a 4-third chuck, a 5-fourth chuck, a 6-laser head, a 7-first slide rail, an 8-first rack, a 9-mounting seat, a 10-second driving motor, an 11-second rack, a 12-second slide rail, a 13-first mounting plate, a 14-third driving motor, a 15-first screw rod, a 16-first screw rod slide seat, a 17-second mounting plate, a 18-third mounting plate, a 19-fourth driving motor, a 20-second screw rod, a 21-second screw rod slide seat, a 22-third slide rail, a 23-third slide seat, a 24-fourth slide rail, a 25-fourth slide seat and a 26-first driving motor.
Detailed Description
The structural and operational principles of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, a laser pipe cutting machine comprises a base 1, a first chuck 2, a second chuck 3, a third chuck 4, a fourth chuck 5 and a laser head 6, wherein the first chuck 2, the second chuck 3, the third chuck 4 and the fourth chuck 5 are all slidably arranged on the base 1, the first chuck 2 and the second chuck 3 are arranged at two ends of the base 1, the third chuck 4 is arranged between the first chuck 2 and the second chuck 3, the fourth chuck 5 is arranged between the first chuck 2 and the third chuck 4, the laser head 6 is arranged at the upper end of the base 1, and the laser head 6 can move along the length direction of the base 1.
As shown in fig. 2, two first slide rails 7 are disposed on the side surface of the base 1, the two first slide rails 7 are disposed at the upper end and the lower end of the base 1, at least four first sliding seats are slidably disposed on one first slide rail 7, the first chuck 2, the second chuck 3, the third chuck 4 and the fourth chuck 5 are fixedly connected with the first sliding seats respectively, a first rack 8 is further disposed on the side surface of the base 1, the first rack 8 is disposed at the upper end of the base 1, driving assemblies are disposed on the first chuck 2, the second chuck 3, the third chuck 4 and the fourth chuck 5, each driving assembly comprises a first driving motor 26 and a first gear, the first gear is fixedly connected with an output shaft of the first driving motor 26, and the first gear is meshed with the first rack 8.
Referring to fig. 1 and 3, the laser pipe cutting machine further includes an X-axis driving mechanism, the X-axis driving mechanism includes a mounting base 9, a second driving motor 10, a second rack 11, a second gear and two second slide rails 12, the second slide rails 12 are mounted on the top surface of the base 1, the two second slide rails 12 are disposed at the front end and the rear end of the base 1, the second slide rails 12 are slidably mounted with a second slide seat, the mounting base 9 is fixedly connected with the second slide seat, the laser head 6 is disposed on the mounting base 9, the second rack 11 is disposed on the top surface of the base 1, the second rack 11 is disposed at the rear end of the base 1, the second driving motor 10 is mounted on the mounting base 9, the second gear is fixedly connected with the output shaft of the second driving motor 10, and the second gear is meshed with the second rack 11.
As shown in fig. 3, the laser pipe cutting machine further includes a Y-axis driving mechanism, the Y-axis driving mechanism includes a first mounting plate 13, a third driving motor 14, and a first screw rod 15 disposed along a front-rear direction, the first mounting plate 13 is fixedly connected with the mounting seat 9, the first screw rod 15 and the third driving motor 14 are fixedly mounted on the first mounting plate 13, the first screw rod 15 is fixedly connected with an output shaft of the third driving motor 14, a first screw rod slide seat 16 is slidably disposed on the first screw rod 15, and the laser head 6 is disposed on the first screw rod slide seat 16.
As a preferred scheme, the laser pipe cutting machine further comprises a Z-axis driving mechanism, the Z-axis driving mechanism comprises a second mounting plate 17, a third mounting plate 18, a fourth driving motor 19 and a second screw rod 20 arranged along the vertical direction, the second mounting plate 17 is fixedly connected with the first screw rod sliding seat 16, the second screw rod 20 and the fourth driving motor 19 are fixedly mounted on the second mounting plate 17, the second screw rod 20 is fixedly connected with an output shaft of the fourth driving motor 19, a second screw rod sliding seat 21 is slidably arranged on the second screw rod 20, the third mounting plate 18 is fixedly connected with the second screw rod sliding seat 21, and the laser head 6 is fixedly mounted on the third mounting plate 18.
As a preferable scheme, the Y-axis driving mechanism further includes a third slide rail 22, the third slide rail 22 is disposed on the first mounting plate 13, the third slide rail 22 is disposed parallel to the first screw rod 15, two third slide rails 22 are disposed on the left and right sides of the first screw rod 15, and a third slide carriage 23 is slidably disposed on the third slide rail 22, and the third slide carriage 23 is fixedly connected with the second mounting plate 17.
As a preferable scheme, the Z-axis driving mechanism further includes a fourth sliding rail 24, the fourth sliding rail 24 is disposed on the second mounting plate 17, the fourth sliding rail 24 is disposed parallel to the second screw rod 20, two fourth sliding rails 24 are respectively disposed on the left and right sides of the second screw rod 20, a fourth sliding seat 25 is slidably disposed on the fourth sliding rail 24, and the fourth sliding seat 25 is fixedly connected with the third mounting plate 18.
As a preferable scheme, when the laser head 6 moves to the highest position in the vertical direction, the bottom end of the laser head 6 is higher than the top ends of the third chuck 4 and the fourth chuck 5, so that the third chuck 4 and the fourth chuck 5 can not be touched when the laser head 6 moves, the possibility of damaging between the third chuck 4, the fourth chuck 5 and the laser head 6 is avoided, and the service life of the laser pipe cutting machine is prolonged.
As a preferable mode, the first chuck 2, the second chuck 3, the third chuck 4 and the fourth chuck 5 are provided with a clamp and a fifth driving motor for driving the clamp to open or close.
As a preferred solution, the laser pipe cutting machine further includes a control device, and the first driving motor 26, the second driving motor 10, the third driving motor 14, the fourth driving motor 19, and the fifth driving motor are all electrically connected to the control device.
As shown in fig. 4, in an initial stage, the first chuck 2 is at the leftmost side of the base 1, and the second, third and fourth chucks 3, 4 and 5 are at the rightmost side of the base 1.
As shown in fig. 5, when the cutting length is smaller than the first length threshold, the laser head 6 is positioned between the second chuck 3 and the third chuck 4, the second chuck 3 is positioned at the rightmost side of the base 1, one end of the pipe is clamped by the first chuck 2, the third chuck 4 and the fourth chuck 5 also clamp the pipe, the other end of the pipe also passes through the third chuck 4, so that the pipe is maintained in a horizontally placed state, the fourth chuck 5 is positioned in the middle of the first chuck 2 and the third chuck 4, at this time, the laser head 6 is started, the laser head 6 emits laser to cut the part of the pipe extending, and the cut pipe directly falls into the trough.
As shown in fig. 6, when the length of the pipe extending out of the third chuck 4 is not less than the second length threshold, the first chuck 2 moves leftwards to clamp the pipe, so that the jitter generated by natural sagging when the pipe is cut at high speed can be effectively prevented, and the load burden of the third chuck 4 and the fourth chuck 5 is reduced.
After the cutting of the part is finished, the clamping of the third chuck 4 and the fourth chuck 5 can be loosened, the laser head 6, the third chuck 4 and the fourth chuck 5 simultaneously move leftwards until the other end of the pipe stretches out a certain distance from the third chuck 4 again, namely feeding is realized, when the stretching length meets the processing requirement, the laser head 6 can be started again, and the laser head 6 emits laser to cut the pipe again.
As shown in fig. 7, when the length of the pipe is not greater than the third length threshold, that is, the feeding cannot meet the processing requirement anyway, at this time, the first chuck 2 loosens the pipe, the second chuck 3 moves leftwards to clamp one end of the pipe, the third chuck 4 and the fourth chuck 5 loosen the pipe, then the third chuck 4 and the fourth chuck 5 move rightwards simultaneously, the pipe stretches out of the fourth chuck 5, and the laser head 6 moves leftwards, when the laser head 6 is positioned between the first chuck 2 and the fourth chuck 5, the third chuck 4 is positioned in the middle of the first chuck 2 and the fourth chuck 5, and the stretching length meets the processing requirement, the laser head 6 is started again, and the laser head 6 emits laser to cut the pipe, so that the real zero tailing cutting can be realized, the raw material consumption is reduced, the environment is protected, and the production cost can be reduced; the pipe can be well clamped through the matching of the chucks, so that the phenomenon of straw ropes during high-speed pipe cutting can be effectively avoided, and the cutting quality can be effectively improved.
As shown in fig. 8, when the cutting length is not less than the first length threshold or the cutting process of completely cutting off the pipe is not needed, the laser head 6 is positioned between the first chuck 2 and the fourth chuck 5, one end of the pipe is clamped by the second chuck 3, the other end of the pipe also passes through the third chuck 4 and the fourth chuck 5 and then is clamped by the first chuck 2, the third chuck 4 and the fourth chuck 5 also clamp the pipe, and the third chuck 4 is arranged at the middle position of the second chuck 3 and the fourth chuck 5, so that the pipe is kept in a horizontal placement state, at the moment, the laser head 6 is started, and the laser head 6 emits laser to cut the part of the pipe extending out of the fourth chuck 5, so that the pipe can be well supported, and the phenomenon of crowbar due to external gravity center can be effectively avoided, thereby enabling the laser pipe cutting machine to operate more stably.
After the partial cut is completed, the first chuck 2, the fourth chuck 5 and the third chuck 4 are released, and the second chuck 3 moves rightward with the pipe interposed therebetween, and when the left end of the pipe is separated from the third chuck 4, as shown in fig. 9. The first chuck 2, the second chuck 3, the third chuck 4 and the fourth chuck 5 are all loosened, and the second chuck 3 moves rightward at a high speed, so that the cut pipe naturally falls into the trough.
The fourth chuck 5 may be selected to be unused when the cut length is not less than the first length threshold or the cutting process of cutting the pipe is not required, but the third chuck 4 replaces the fourth chuck 5 when the fourth chuck 5 is unused.
The first length threshold value is greater than the second length threshold value, the third length threshold value is less than the second length threshold value, and the first length threshold value, the second length threshold value and the third length threshold value are all set in a control device, and the control device controls the first chuck 2, the second chuck 3, the third chuck 4, the fourth chuck 5 and the laser head 6 to work.
In addition, before or during cutting, if the position of the laser head 6 needs to be adjusted, the second driving motor 10, the third driving motor 14 and the fourth driving motor 19 can be started, then the second driving motor 10 can drive the second gear to rotate, and in cooperation with the second gear and the second rack 11, the second sliding seat translates on the second sliding rail 12, so that the laser head 6 moves along the X-axis direction finally, the third driving motor 14 can drive the first screw rod 15 to rotate, so that the first screw rod sliding seat 16 moves on the first screw rod 15, so that the laser head 6 moves along the Y-axis direction finally, and the fourth driving motor 19 can drive the second screw rod 20 to rotate, so that the second screw rod sliding seat 21 moves on the second screw rod 20, so that the laser head 6 moves along the Z-axis direction finally, and the X-axis position, the Y-axis position and the Z-axis position of the laser head 6 are adjusted through the X-axis driving mechanism, the Y-axis driving mechanism and the Z-axis driving mechanism respectively, so that the position adjustment of the laser head 6 is realized.
As shown in fig. 10, a pipe cutting method of a laser pipe cutting machine, based on the laser pipe cutting machine as described above, includes the steps of:
step A, starting a control device, wherein the control device controls the first chuck to move to the leftmost side of the base, and controls the second chuck, the third chuck, the fourth chuck and the laser head to move to the rightmost side of the base;
b, inputting the cutting length to a control device, judging whether the cutting length is smaller than a first length threshold by the control device, if so, entering the step C, and if not, entering the step D;
c, placing the pipe, controlling the leftmost end of the pipe clamped by the first chuck by the control device, moving the third chuck, the fourth chuck and the laser head leftwards to enable the laser head to move to a cutting length, enabling the length of the pipe extending out of the third chuck to be larger than the cutting length, enabling the laser head to be at a certain distance from the third chuck, enabling the fourth chuck to be located at the middle position of the first chuck and the third chuck, and entering the step E;
step D, placing the pipe, controlling the leftmost end of the pipe to be clamped by the first chuck by the control device, controlling the rightmost end of the pipe to be clamped by the second chuck, then moving the third chuck, the fourth chuck and the laser head leftwards to enable the laser head to move to a cutting length, enabling a certain distance to be reserved between the fourth chuck and the laser head, enabling the laser head to emit laser to cut the pipe by the third chuck at the middle position of the second chuck and the fourth chuck, and then entering the step K;
e, the control device judges whether the length of the pipe extending out of the third chuck is larger than a second length threshold value, if yes, the control device controls the second chuck to move leftwards to clamp the right end of the pipe, then a laser head is started, the laser head emits laser to cut the pipe, and then the step F is carried out; if not, starting a laser head, sending laser by the laser head to cut the pipe, and then entering the step F;
step F, the control device judges whether the length of the residual pipe is smaller than a third length threshold value, if yes, the step H is entered, and if not, the step G is entered;
step G, the control device controls the third chuck and the fourth chuck to loosen the pipe, the laser head, the third chuck and the fourth chuck simultaneously move leftwards until the laser head moves to the cutting length again, the length of the right end of the pipe extending from the third chuck again is consistent with the length of the right end of the pipe extending from the third chuck in the step C, the fourth chuck is positioned in the middle of the first chuck and the third chuck again, the laser head is started again to cut the pipe, and then the step F is started;
step H, the control device controls the first chuck to loosen the pipe, the second chuck moves leftwards to clamp the right end of the pipe, the third chuck and the fourth chuck loosen the pipe, then the third chuck and the fourth chuck simultaneously move rightwards, the laser head moves leftwards until the distance from the left side of the pipe to the laser head is a cutting length, the fourth chuck moves to the right side of the laser head and keeps a certain distance from the laser head, the third chuck is positioned between the second chuck and the fourth chuck, and then the laser head is started to cut the pipe, and step I is entered;
step I, judging whether the length of the residual pipe is smaller than the cutting length or not by the control device, if yes, controlling the third chuck and the fourth chuck to loosen the pipe, enabling the second chuck to clamp the pipe to move rightwards until the left end of the pipe is separated from the third chuck, then controlling the second chuck to loosen the pipe, and controlling the second chuck to move rightwards at a high speed, and if not, entering the step J;
step J, the control device controls the third chuck and the fourth chuck to loosen the pipe, the third chuck, the fourth chuck and the laser head move rightward at the same time until the distance from the left side of the pipe to the laser head is the cutting length, the fourth chuck moves to the right side of the laser head and keeps a certain distance from the laser head, the third chuck is positioned between the second chuck and the fourth chuck, then the laser head is started again to cut the pipe, and then the step I is carried out;
k, the control device controls the first chuck, the third chuck and the fourth chuck to loosen the pipe, the second chuck clamps the pipe to move rightwards until the left end of the pipe is separated from the third chuck, then the second chuck is controlled to loosen the pipe, and the second chuck is controlled to move rightwards at a high speed;
in the step G, the laser head and the third chuck move synchronously, and in the step J, the laser head and the fourth chuck move synchronously.
In the foregoing, only the preferred embodiment of the present invention is described, and any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical solutions of the present invention fall within the scope of the technical solutions of the present invention.

Claims (9)

1. A pipe cutting method of a laser pipe cutting machine is characterized in that: the laser pipe cutting machine comprises a base, a first chuck, a second chuck, a third chuck, a fourth chuck and a laser head, wherein the first chuck, the second chuck, the third chuck and the fourth chuck are all slidably arranged on the base, the first chuck and the second chuck are arranged at two ends of the base, the third chuck is arranged between the first chuck and the second chuck, the fourth chuck is arranged between the first chuck and the third chuck, the laser head is arranged at the upper end of the base, and the laser head can move along the length direction of the base;
the pipe cutting method comprises the following steps:
step A, starting a control device, wherein the control device controls the first chuck to move to the leftmost side of the base, and controls the second chuck, the third chuck, the fourth chuck and the laser head to move to the rightmost side of the base;
b, inputting the cutting length to a control device, judging whether the cutting length is smaller than a first length threshold by the control device, if so, entering the step C, and if not, entering the step D;
c, placing the pipe, controlling the leftmost end of the pipe clamped by the first chuck by the control device, moving the third chuck, the fourth chuck and the laser head leftwards to enable the laser head to move to a cutting length, enabling the length of the pipe extending out of the third chuck to be larger than the cutting length, enabling the laser head to be at a certain distance from the third chuck, enabling the fourth chuck to be located at the middle position of the first chuck and the third chuck, and entering the step E;
step D, placing the pipe, controlling the leftmost end of the pipe to be clamped by the first chuck by the control device, controlling the rightmost end of the pipe to be clamped by the second chuck, then moving the third chuck, the fourth chuck and the laser head leftwards to enable the laser head to move to a cutting length, enabling a certain distance to be reserved between the fourth chuck and the laser head, enabling the laser head to emit laser to cut the pipe by the third chuck at the middle position of the second chuck and the fourth chuck, and then entering the step K;
e, the control device judges whether the length of the pipe extending out of the third chuck is larger than a second length threshold value, if yes, the control device controls the second chuck to move leftwards to clamp the right end of the pipe, then a laser head is started, the laser head emits laser to cut the pipe, and then the step F is carried out; if not, starting a laser head, sending laser by the laser head to cut the pipe, and then entering the step F;
step F, the control device judges whether the length of the residual pipe is smaller than a third length threshold value, if yes, the step H is entered, and if not, the step G is entered;
step G, the control device controls the third chuck and the fourth chuck to loosen the pipe, the laser head, the third chuck and the fourth chuck simultaneously move leftwards until the laser head moves to the cutting length again, the length of the right end of the pipe extending from the third chuck again is consistent with the length of the right end of the pipe extending from the third chuck in the step C, the fourth chuck is positioned in the middle of the first chuck and the third chuck again, the laser head is started again to cut the pipe, and then the step F is started;
step H, the control device controls the first chuck to loosen the pipe, the second chuck moves leftwards to clamp the right end of the pipe, the third chuck and the fourth chuck loosen the pipe, then the third chuck and the fourth chuck simultaneously move rightwards, the laser head moves leftwards until the distance from the left side of the pipe to the laser head is a cutting length, the fourth chuck moves to the right side of the laser head and keeps a certain distance from the laser head, the third chuck is positioned between the second chuck and the fourth chuck, and then the laser head is started to cut the pipe, and step I is entered;
step I, judging whether the length of the residual pipe is smaller than the cutting length or not by the control device, if yes, controlling the third chuck and the fourth chuck to loosen the pipe, enabling the second chuck to clamp the pipe to move rightwards until the left end of the pipe is separated from the third chuck, then controlling the second chuck to loosen the pipe, and controlling the second chuck to move rightwards at a high speed, and if not, entering the step J;
step J, the control device controls the third chuck and the fourth chuck to loosen the pipe, the third chuck, the fourth chuck and the laser head move rightward at the same time until the distance from the left side of the pipe to the laser head is the cutting length, the fourth chuck moves to the right side of the laser head and keeps a certain distance from the laser head, the third chuck is positioned between the second chuck and the fourth chuck, then the laser head is started again to cut the pipe, and then the step I is carried out;
k, the control device controls the first chuck, the third chuck and the fourth chuck to loosen the pipe, the second chuck clamps the pipe to move rightwards until the left end of the pipe is separated from the third chuck, then the second chuck is controlled to loosen the pipe, and the second chuck is controlled to move rightwards at a high speed;
in the step G, the laser head and the third chuck move synchronously, and in the step J, the laser head and the fourth chuck move synchronously.
2. The pipe cutting method of the laser pipe cutting machine according to claim 1, wherein: the side of base is equipped with two first slide rails, and two first slide rails are equipped with the upper and lower both ends of base, and a first slide rail slip is installed four at least first slides, first chuck, second chuck, third chuck and fourth chuck respectively with first slide fixed connection, the side of base still is equipped with first rack, the upper end of base is located to first rack, all be equipped with drive assembly on first chuck, second chuck, third chuck and the fourth chuck, drive assembly includes first driving motor and first gear, the output shaft fixed connection of first gear and first driving motor, first gear and first rack meshing.
3. The pipe cutting method of the laser pipe cutting machine according to claim 2, wherein: still include X axle actuating mechanism, X axle actuating mechanism includes mount pad, second driving motor, second rack, second gear and two second slide rails, the top surface of base is installed to the second slide rail, and the front and back both ends of base are located to two second slide rails, the second slide rail is slided and is installed the second slide, mount pad and second slide fixed connection, the laser head is located on the mount pad, the top surface of base is located to the second rack, the rear end of base is located to the second rack, second driving motor installs on the mount pad, the output shaft fixed connection of second gear and second driving motor, second gear and second rack meshing.
4. A pipe cutting method of a laser pipe cutting machine according to claim 3, wherein: the laser head is arranged on the first screw rod sliding seat, and is characterized by further comprising a Y-axis driving mechanism, wherein the Y-axis driving mechanism comprises a first mounting plate, a third driving motor and a first screw rod arranged along the front-back direction, the first mounting plate is fixedly connected with a mounting seat, the first screw rod and the third driving motor are fixedly mounted on the first mounting plate, the first screw rod is fixedly connected with an output shaft of the third driving motor, a first screw rod sliding seat is arranged on the first screw rod in a sliding manner, and the laser head is arranged on the first screw rod sliding seat.
5. The pipe cutting method of the laser pipe cutting machine according to claim 4, wherein: still include Z axle actuating mechanism, Z axle actuating mechanism includes second mounting panel, third mounting panel, fourth driving motor and follows the second lead screw that vertical direction set up, second mounting panel and first lead screw slide fixed connection, second lead screw and fourth driving motor fixed mounting are on the second mounting panel, second lead screw and fourth driving motor's output shaft fixed connection, the slip is provided with second lead screw slide on the second lead screw, third mounting panel and second lead screw slide fixed connection, the laser head is fixed to be installed on the third mounting panel.
6. The pipe cutting method of the laser pipe cutting machine according to claim 5, wherein: the Y-axis driving mechanism further comprises a third sliding rail, the third sliding rail is arranged on the first mounting plate and is parallel to the first screw rod, two third sliding rails are respectively arranged on the left side and the right side of the first screw rod, a third sliding seat is arranged on the third sliding rail in a sliding mode, and the third sliding seat is fixedly connected with the second mounting plate.
7. The pipe cutting method of the laser pipe cutting machine according to claim 6, wherein: the Z-axis driving mechanism further comprises a fourth sliding rail, the fourth sliding rail is arranged on the second mounting plate and is arranged in parallel with the second screw rod, the number of the fourth sliding rails is two, the two fourth sliding rails are respectively arranged on the left side and the right side of the second screw rod, a fourth sliding seat is arranged on the fourth sliding rail in a sliding mode, and the fourth sliding seat is fixedly connected with the third mounting plate.
8. The pipe cutting method of the laser pipe cutting machine according to claim 7, wherein: when the laser head moves to the highest position in the vertical direction, the bottom end of the laser head is higher than the top ends of the third chuck and the fourth chuck.
9. The pipe cutting method of the laser pipe cutting machine according to claim 8, wherein: the chuck is characterized by further comprising a control device, wherein the first chuck, the second chuck, the third chuck and the fourth chuck are respectively provided with a clamp and a fifth driving motor for driving the clamp to open or close, and the first driving motor, the second driving motor, the third driving motor, the fourth driving motor and the fifth driving motor are electrically connected with the control device.
CN201910280625.0A 2019-04-09 2019-04-09 Laser pipe cutting machine and pipe cutting method thereof Active CN109848585B (en)

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CN110449729A (en) * 2019-08-29 2019-11-15 佛山汇百盛激光科技有限公司 A kind of laser pipe cutter
CN110421359B (en) * 2019-09-12 2024-06-04 广东宏石激光技术股份有限公司 Composite laser pipe cutting machine
CN110421277B (en) * 2019-09-12 2024-04-23 东莞市力星激光科技有限公司 Three-chuck laser pipe cutting machine and three-chuck pipe cutting method
CN111215760B (en) * 2019-11-08 2021-10-22 广东宏石激光技术股份有限公司 Four-chuck laser pipe cutting machine
CN110802334B (en) * 2020-01-08 2020-04-14 佛山市宏石激光技术有限公司 Pipe cutting method based on four-chuck laser pipe cutting machine
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CN112059440B (en) * 2020-09-11 2022-05-17 佛山市隆信激光科技有限公司 Laser cutting machine and section cutting method using same
CN112404707B (en) * 2020-12-01 2024-05-14 河北汉智数控机械有限公司 Laser head small displacement driving device for laser cutting equipment
CN114043102B (en) * 2022-01-13 2022-06-14 济南邦德激光股份有限公司 Pipe cutting method of four-chuck laser pipe cutting machine
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