CN112976113B - Full-automatic cutting machine and cutting control method thereof - Google Patents
Full-automatic cutting machine and cutting control method thereof Download PDFInfo
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- CN112976113B CN112976113B CN202110430640.6A CN202110430640A CN112976113B CN 112976113 B CN112976113 B CN 112976113B CN 202110430640 A CN202110430640 A CN 202110430640A CN 112976113 B CN112976113 B CN 112976113B
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- saw
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- 238000005520 cutting process Methods 0.000 title claims abstract description 191
- 238000000034 method Methods 0.000 title claims description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 92
- 238000009826 distribution Methods 0.000 claims abstract description 6
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 2
- 241000233805 Phoenix Species 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/16—Cutting rods or tubes transversely
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D11/00—Combinations of several similar cutting apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/005—Computer numerical control means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/27—Means for performing other operations combined with cutting
- B26D7/28—Means for performing other operations combined with cutting for counting the number of cuts or measuring cut lenghts
Abstract
The full-automatic cutting machine comprises a rotary table provided with a disc cutter cutting mechanism and a saw blade cutter cutting mechanism, and a tray mechanism for supporting pipes, wherein the rotary table is arranged on a saw table, the saw table moves along with pipes through electric or pneumatic operation, a Bluetooth module is arranged on the rotary table, control signals inside the rotary table are subjected to wireless power distribution through the Bluetooth module, the tray mechanism is provided with a bracket, and a power lifting component for controlling the bracket to move up and down, the disc cutter cutting mechanism is provided with a first electronic ruler in the stroke direction of a disc cutter cutting arm, and the saw blade cutter cutting mechanism is provided with a second electronic ruler in the stroke direction of the saw blade cutter cutting arm. The control signal inside the turntable is subjected to wireless power distribution through the Bluetooth module of the international brand Phoenix, and only a three-phase power supply and a 24Vdc control power supply pass through the slip ring, so that the control is stable and reliable.
Description
Technical Field
The invention relates to the technical field of pipe cutting, in particular to a full-automatic cutting machine and a cutting control method thereof.
Background
The conventional cutting machine has the following disadvantages:
1. the control signals in the turntable are distributed through the slip rings, so that multiple control signals of the slip rings are easy to lose, and the fault rate is high;
2. the lifting of the tray is manually adjusted by looking at the scales, the motor drives the tray to rotate up and down in a forward and reverse direction, the specification of the pipe is changed, and the upper and lower positions of the tray need to be manually adjusted again;
3. the cutting knife in the turntable advances and retreats to control the feeding and retreating positions through a proximity switch and mechanical limit, the specification of the pipe is changed, and the related limit needs to be manually adjusted again;
4. the pressure and flow of the cutting hydraulic action need to be manually adjusted according to the actual cutting specification, thickness and the like, and the manual adjustment of the manual pressure and flow valve is needed after the machine is stopped;
5. when the two points 3 and 4 need to be adjusted, the safety door of the saw bench needs to be opened for manual operation, which is dangerous and inconvenient.
Disclosure of Invention
The invention aims to provide a full-automatic cutting machine and a cutting control method thereof, which are used for controlling stability and detecting the extension distance of a piston rod of an oil cylinder, making a stroke conversion formula through a mechanical motion track, and converting the extension distance of an electronic ruler into the stroke of a cutter arm so as to overcome the defects in the prior art.
According to the full-automatic cutting machine of this purpose design, including the carousel that is equipped with disc cutter cutting mechanism and saw bit cutter cutting mechanism, and the tray mechanism of bearing tubular product, the carousel sets up on the saw bench, the saw bench moves through electronic or pneumatic following pipe, be equipped with bluetooth module on the carousel, the inside control signal of carousel carries out wireless distribution through bluetooth module, tray mechanism is equipped with the bracket, and the power elevating system of control bracket up-and-down motion, disc cutter cutting mechanism is equipped with first electronic ruler in the stroke direction of disc cutter cutting arm, saw bit cutter cutting mechanism is equipped with the second electronic ruler in the stroke direction of saw bit cutter cutting arm.
The full-automatic cutting machine further comprises an overtravel-limit inductive switch arranged on the full-automatic cutting machine for sensing the movement travel position of the saw bench, and a clamping mechanism for pneumatically clamping the pipe is arranged on the saw bench.
The disc cutter cutting mechanism comprises a disc cutter, a disc cutter arm and a first oil cylinder, wherein a piston rod of the first oil cylinder, a guide cutter and the disc cutter are respectively connected with the disc cutter arm in a matched manner, the first electronic ruler is fixedly arranged on a cylinder body of the first oil cylinder, the saw blade cutter cutting mechanism comprises a guide cutter, a saw blade cutter arm and a second oil cylinder, the piston rod of the second oil cylinder and the saw blade cutter are respectively connected with the saw blade cutter arm in a matched manner, and the second electronic ruler is fixedly arranged on the cylinder body of the second oil cylinder.
The guide knife and the saw blade knife are respectively and detachably arranged on the knife arm of the same saw blade knife, and the guide knife is provided with an annular step for limiting the depth of the guide knife cut into the pipe.
The full-automatic cutting machine further comprises a hydraulic control loop provided with a proportional flow valve and a proportional overflow valve, wherein the hydraulic control loop is further provided with an oil tank, a one-way valve and an electromagnetic valve, and the proportional flow valve, the proportional overflow valve, the one-way valve, the electromagnetic valve and the oil tank are respectively connected with the first oil cylinder or the second oil cylinder through pipelines.
The turntable is also provided with a slip ring for passing through a three-phase power supply and a control power supply.
The control power supply is 24Vdc control power supply.
The tray mechanism comprises a front tray mechanism and a rear tray mechanism which are both provided with brackets and power lifting components, and the power lifting components of the front tray mechanism and the rear tray mechanism are both provided with power transmission components.
The power lifting assembly comprises a first lifting screw rod and a second lifting screw rod which are positioned on two sides of the bracket, and a first motor and a second motor which respectively drive the first lifting screw rod and the second lifting screw rod to rotate through a turbine and a worm, the power transmission assembly comprises a universal coupler and a third motor, a motor shaft of the first motor or the motor shaft of the second motor is connected with a motor shaft of the third motor through the universal coupler in a matched manner, two sides of the bracket respectively correspond to the first lifting screw rod and the second lifting screw rod, a first nut movable seat and a second nut movable seat are arranged on the two sides of the bracket, a synchronous belt transmission assembly is arranged between the first motor and the second motor, and the two sides of the bracket respectively move synchronously along the first lifting screw rod and the second lifting screw rod through the first nut movable seat and the second nut movable seat.
The lifting guide components are arranged on two sides of the bracket in the moving direction of the bracket, and comprise guide rods and guide seats respectively arranged on two sides of the bracket, wherein the guide rods are inserted into the guide seats.
The cutting control method of the full-automatic cutting machine designed according to the purpose comprises the full-automatic cutting machine, a control panel arranged on the full-automatic cutting machine, and a cutting machine program control system for controlling the full-automatic cutting machine to work, wherein the cutting machine program control system is a PLC system, and the control method comprises the following steps: the method comprises the steps that a pipe specification and a cutting working mode are manually input on a control panel, a cutter program control system automatically calculates the feeding position and the retracting position of a cutter arm according to the input pipe specification and the cutting working mode, automatically invokes cutting working control, the cutter program control system controls a front tray mechanism and a rear tray mechanism to support the pipe according to the input pipe specification until the center of the pipe is consistent with the center of a turntable of a sawing table, the cutter program control system carries out corresponding cutting action flow according to the selected corresponding cutting working mode, in each cutting mode, the cutter program control system modifies a flow set value and a pressure set value according to the manual work on the control panel, carries out on-line adjustment on the movement speed of the cutter arm through pressure and a flow proportional valve in an oil path, and automatically stores cutting product data record after cutting is completed.
The cutting control method of the full-automatic cutting machine further comprises an emergency stop protection program in the automatic cutting process, if the revolution frequency converter of the turntable makes an error, or a safety door on the cutting machine is opened, or an emergency stop button on the cutting machine is started to act, or after the saw bench reaches the position of the overtravel inductive switch, the saw bench can immediately stop at the original position, meanwhile, the cutter is automatically retracted, after the cutter is retracted in place, a clamping mechanism of the saw bench is loosened, and after the clamping mechanism is loosened to the original position, the saw bench is retracted to the original position.
The cutting working mode comprises a first cutting working mode used for cutting PE pipes with special thick walls, wherein the disc cutter cutting mechanism and the saw blade cutter cutting mechanism work, the saw blade cutter firstly cuts a certain depth, and then the disc cutter cuts off the pipes; the cutting working mode also comprises a second cutting working mode used when the medium-thick-wall PE pipe is cut, a guiding knife is replaced on the saw blade knife cutting mechanism, the guiding knife is advanced to cut a guiding knife groove on the pipe, and the disc knife is moved backwards to cut the pipe; the cutting working mode also comprises a third cutting working mode for cutting the PVC pipe, and the saw blade and knife cutting mechanism works independently; the cutting working mode also comprises a fourth cutting working mode used when the thin-wall PE pipe is cut, and the disc cutter cutting mechanism works independently.
Tube gauge includes outer diameter and thickness (wall thickness).
The beneficial effects of the invention are as follows:
an electronic ruler is arranged in the direction of the cutter arm, the cutting feed depth and the cutter withdrawal position are automatically calculated by a PLC system according to the specification of a pipe, manual adjustment is not needed, the extending distance of a piston rod of an oil cylinder is detected by fixing the electronic ruler on the oil cylinder, a stroke conversion formula is made through a mechanical movement track, and the extending distance of the electronic ruler is converted into the stroke of the cutter arm. The center height of the device is fixed, the mechanical position of the cutter arm is fixed, and the saw blade, guide blade and circular blade specifications are fixed. After the electronic ruler is installed and initialized, the corresponding feeding depth and the reasonable retracting position can be automatically calculated according to the specification of the pipe. If the specification of the pipe is changed, the system automatically calculates and controls the working position of the cutter arm as long as a customer inputs new specification parameters, and the mechanical position or the installation position of the position sensing switch is not required to be adjusted.
The hydraulic circuit is provided with a pressure and flow proportional valve, the related proportional valve is controlled by a signal output by the PLC system, the pressure and flow of the cutter can be set on a picture (control panel) in real time, a process formula is set, and the cutter is automatically called or corrected.
The control signal in the turntable is subjected to wireless power distribution through the Bluetooth module of the international brand Phoenix, and only a three-phase power supply and a 24Vdc control power supply are controlled stably and reliably through the slip ring.
The full-automatic cutting machine can receive the fixed-length cutting signal of the tractor to carry out cutting work, can also receive the signal of the meter wheel encoder to automatically carry out fixed-length cutting, has the functions of cutting a sample tube, recording cutting product data and the like, is friendly in operation interface, has perfect alarming and fault prompting functions and displays the current working state. All working parameters are automatically adjusted as long as the specifications of the cut pipes are input, and the operation is simple and visual.
Drawings
FIG. 1 is a schematic diagram of a turntable according to an embodiment of the invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is an enlarged view at B in fig. 1.
Fig. 4 is a schematic perspective view of a tray mechanism according to an embodiment of the invention.
Fig. 5 is a schematic plan view of a tray mechanism according to an embodiment of the invention.
Fig. 6 is an enlarged view of fig. 4 at C.
Fig. 7 is a schematic diagram of a hydraulic control circuit according to an embodiment of the invention.
Fig. 8 is a schematic diagram of a cutting control flow of a full-automatic cutting machine according to an embodiment of the invention.
In the figure, 1 is a rotary table, 2 is a circular cutter cutting mechanism, 3 is a saw blade cutter cutting mechanism, 4 is a tray mechanism, 5 is a bracket, 6 is a first electronic ruler, 7 is a second electronic ruler, 8 is a proportional flow valve, 9 is a proportional overflow valve, 10 is a hydraulic control loop, 11 is an electromagnetic valve, 12 is an oil cylinder, 13 is a first oil cylinder, 14 is a second oil cylinder, 15 is a guide rod, 16 is a guide seat, 17 is a synchronous belt, 18 is a driving wheel, 19 is a motor, and 20 is a supporting side plate.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Referring to fig. 1, a full-automatic cutting machine, including the carousel 1 that is equipped with disc cutter cutting mechanism 2 and saw bit sword cutting mechanism 3, and the tray mechanism 4 of bearing tubular product, carousel 1 sets up on the saw bench, the saw bench is through electronic or pneumatic following pipe motion, be equipped with bluetooth module on the carousel 1, the inside control signal of carousel 1 carries out wireless distribution through bluetooth module, tray mechanism 4 is equipped with bracket 5, and the power elevating system of control bracket 5 up-and-down motion, disc cutter cutting mechanism 2 is equipped with first electronic ruler 6 in the stroke direction of disc cutter cutting arm, saw bit sword cutting mechanism 3 is equipped with second electronic ruler 7 in the stroke direction of saw bit sword cutting arm.
The full-automatic cutting machine further comprises an overtravel-limit induction switch arranged on the full-automatic cutting machine for inducing the movement travel position of the saw bench, wherein a clamping mechanism for pneumatically clamping the pipe is arranged on the saw bench, such as a clamping cylinder, one end of a piston rod of the clamping cylinder is provided with a clamping block, and the clamping block clamps or loosens the pipe through the expansion and contraction of the piston rod of the cylinder. The tube is kept moving forward, the disc cutter cutting mechanism 2 and the saw blade cutter cutting mechanism 3 also follow the tube synchronously, otherwise the tube is propped against the blade. After clamping the pipe, the saw bench moves along with the pipe, and the saw bench moves forward by pushing an air cylinder and driving a servo motor.
Overtravel limit protection in automatic cutting process: after the saw bench reaches the position of the overtravel inductive switch, the cutter of the disc cutter cutting mechanism 2 or the saw blade cutter cutting mechanism 3 can automatically retract, after the cutter returns to the original position, the clamping mechanism of the saw bench is loosened, and after the clamping mechanism is loosened to the original position, the saw bench returns to the original position.
Referring to fig. 2, the cutter disc cutting mechanism 2 comprises a cutter disc, a cutter disc cutter arm and a first oil cylinder 13, wherein a piston rod of the first oil cylinder 13 and the cutter disc are respectively connected with the cutter disc cutter arm in a matched manner, and the first electronic ruler 6 is fixedly arranged on a cylinder body of the first oil cylinder 13.
Referring to fig. 3, the saw blade cutter cutting mechanism 3 comprises a saw blade cutter, a saw blade cutter arm and a second oil cylinder 14, wherein a piston rod, a guide cutter and the saw blade cutter of the second oil cylinder 14 are respectively connected with the saw blade cutter arm in a matching way, and the second electronic ruler 7 is fixedly arranged on a cylinder body of the second oil cylinder 14.
An electronic ruler is arranged in the direction of the cutter arm, the cutting feed depth and the cutter withdrawal position are automatically calculated by a PLC system according to the specification of a pipe, manual adjustment is not needed, the extending distance of a piston rod of an oil cylinder is detected by fixing the electronic ruler on the oil cylinder, a stroke conversion formula is made through a mechanical movement track, and the extending distance of the electronic ruler is converted into the stroke of the cutter arm.
The guide knife and the saw blade knife are respectively and detachably arranged on the same saw blade knife arm, and the guide knife and the saw blade knife are arranged on the same saw arm and need to be interchanged for installation. The guide knife and the saw blade knife are respectively fixed on the knife arm of the saw blade knife through a connecting shaft, a nut and the like, and annular steps are arranged on the guide knife to limit the depth of the guide knife cutting into the pipe, and the annular steps prop against the pipe in the cutting of the guide knife.
The center height of the device is fixed, the mechanical position of the cutter arm is fixed, and the saw blade, guide blade and circular blade specifications are fixed. After the electronic ruler is installed and initialized, the corresponding feeding depth and the reasonable retracting position can be automatically calculated according to the specification of the pipe. If the specification of the pipe is changed, the system automatically calculates and controls the working position of the cutter arm as long as a customer inputs new specification parameters, and the mechanical position or the installation position of the position sensing switch is not required to be adjusted.
Referring to fig. 7, the full-automatic cutting machine further comprises a hydraulic control loop 10 provided with a proportional flow valve 8 and a proportional overflow valve 9, wherein the hydraulic control loop 10 is further provided with an oil tank, a one-way valve and an electromagnetic valve 11, and the proportional flow valve 8, the proportional overflow valve 9, the one-way valve, the electromagnetic valve 11 and the oil tank are respectively connected with a first oil cylinder 13 or a second oil cylinder 14 through pipelines.
The hydraulic circuit is provided with a pressure and flow proportional valve, the related proportional valve is controlled by a signal output by the PLC system, the pressure and flow of the cutter can be set on a picture (control panel) in real time, a process formula is set, and the cutter is automatically called or corrected.
Referring to fig. 7, which shows a hydraulic station of one of the cutter arms, wherein the proportional flow valve 8 controls the opening size of the flow valve by 0-10VDC, the moving speed of the cutter arm is adjusted on line by modifying the flow set value on the screen (control panel), the proportional overflow valve 9 adjusts the pressure size by 0-10VDC, and the operating pressure of the cutter arm is adjusted on line by modifying the pressure set value on the screen (control panel). The technological parameter formula can be compiled according to the practical working experience value, and the formulas of different pipes can be called.
The turntable 1 is also provided with a slip ring for passing through a three-phase power supply and a control power supply. The control power supply is 24Vdc control power supply.
In this embodiment, the control signal inside the turntable 1 is wirelessly distributed through the bluetooth module of the international brand phoenix, and only the three-phase power supply and the 24Vdc control power supply pass through the slip ring, so that the control is stable and reliable.
The tray mechanism 4 comprises a front tray mechanism and a rear tray mechanism which are respectively provided with a bracket 5 and a power lifting assembly, and the power lifting assemblies of the front tray mechanism and the rear tray mechanism are provided with a power transmission assembly.
Referring to fig. 4 and 5, the power lifting assembly comprises a first lifting screw rod and a second lifting screw rod which are positioned at two sides of the bracket 5, and a first motor and a second motor which respectively drive the first lifting screw rod and the second lifting screw rod to rotate through a turbine and a worm, the power transmission assembly comprises a universal coupler and a third motor, a motor shaft of the first motor or the second motor is connected with a motor shaft of the third motor through the universal coupler in a matched manner, two sides of the bracket 5 respectively correspond to the first lifting screw rod and the second lifting screw rod, a first nut movable seat and a second nut movable seat are arranged on the two sides of the bracket 5, and a synchronous belt transmission assembly is arranged between the first motor and the second motor so that two sides of the bracket 5 respectively move synchronously along the first lifting screw rod and the second lifting screw rod through the first nut movable seat and the second nut movable seat.
Referring to fig. 6, the synchronous belt transmission assembly includes a first driving wheel and a second driving wheel, the first driving wheel is installed on a motor shaft of the first motor, the second driving wheel is installed on a motor shaft of the second motor, a synchronous belt 17 is arranged between the first driving wheel and the second driving wheel, and the synchronous belt 17 coats the first driving wheel and the second driving wheel.
The first motor and the second motor are servo motors, the lifting of the bracket 5 drives the bracket 5 to move up and down through the servo motors, the position is accurately controlled by an absolute value encoder of the servo motors, and the PLC system automatically adjusts the height of the bracket 5 according to the manufactured pipe specification.
Referring to fig. 4 and 5, both sides of the bracket 5 are provided with elevation guide assemblies in the moving direction of the bracket 5, the elevation guide assemblies including guide bars 15, and guide holders 16 respectively provided on both sides of the bracket 5, the guide bars 15 being inserted into the guide holders 16.
In this embodiment, the bracket 5 is including being two of controlling the interval setting and falling the V-arrangement board, is equipped with the flat board between two and falls the V-arrangement board, is equipped with the roller that more than one is the slope setting on two and falls the V-arrangement board respectively, is equipped with the storage tank that is used for holding the roller on two and falls the V-arrangement board respectively, is equipped with the breach on the storage tank, and the one end of roller is equipped with the installation axle, and the installation axle embedding is in the breach.
Referring to fig. 4 and 5, in the present embodiment, the guide bar 15 located at one side of the bracket 5 is fixed to the support side plate 20 by a guide bar fixing seat, which is fixed to the support side plate 20 by a screw or welding, and the guide bar 15 is inserted into the guide bar fixing seat.
The full-automatic cutting machine can receive the fixed-length cutting signal of the tractor to carry out cutting work, can also receive the signal of the meter wheel encoder to automatically carry out fixed-length cutting, has the functions of cutting a sample tube, recording cutting product data and the like, is friendly in operation interface, has perfect alarming and fault prompting functions and displays the current working state. All working parameters are automatically adjusted as long as the specifications of the cut pipes are input, and the operation is simple and visual.
Referring to fig. 8, a cutting control method of a full-automatic cutting machine includes the full-automatic cutting machine, and further includes a control panel disposed on the full-automatic cutting machine, and a cutting machine program control system for controlling the full-automatic cutting machine to work, where the cutting machine program control system is a PLC system, and the control method thereof is as follows: the pipe specification and the cutting working mode are manually input on the control panel, the cutter program control system automatically calculates the feeding position and the retracting position of the cutter arm according to the input pipe specification and the cutting working mode, automatically invokes cutting working control, the cutter program control system controls the front tray mechanism and the rear tray mechanism to support the pipe according to the input pipe specification until the center of the pipe is consistent with the center of the turntable 1 of the sawing table, and the cutter program control system automatically stores cutting product data records after cutting is completed by selecting the corresponding cutting working mode and carrying out corresponding cutting action flow.
The program control system of the cutting machine automatically controls the height of the tray according to the specification of the pipe by reading an absolute value encoder on a servo motor, the front tray mechanism and the rear tray mechanism are used for supporting the pipe and ensuring that the center of the pipe is positioned at the center high position of the equipment, thus the middle saw table is not eccentric in cutting, and when the turntable 1 revolves for feeding, the feeding distance relative to the outer diameter of the pipe and the feeding distance in the circumferential direction are the same. The mechanical lowest position of the bracket 5 of the front and rear tray mechanisms is fixed, and after correction is started once, the height of the bracket 5 can be converted to correspond to the specification of the pipe. The height of the carriage 5 is automatically controlled according to the pipe specification by the absolute encoder readings on the servo motor.
The cutting control method of the full-automatic cutting machine further comprises an emergency stop protection program in the automatic cutting process, if the revolution frequency converter of the turntable 1 goes wrong, or a safety door on the cutting machine is opened, or an emergency stop button on the cutting machine is started to act, or after the saw table reaches the position of the overtravel inductive switch, the saw table can immediately stop at the original position, meanwhile, the cutter is automatically retracted, after the cutter is retracted in place, a clamping mechanism of the saw table is released, and after the clamping mechanism is released to the original position, the saw table is retracted to the original position.
The cutting operation mode includes a first cutting operation mode used when cutting a PE pipe with a particularly thick wall, in which both the disc cutter cutting mechanism 2 and the saw blade cutter cutting mechanism 3 are operated, the saw blade cutter firstly cuts a certain depth, and then the disc cutter cuts the pipe.
Specifically: after the cutting machine receives a cutting signal provided by a traction machine, or after the working length measuring device of the cutting machine works and the length reaches a set value, and after the automatic cutting initial condition is met, starting the automatic cutting operation, starting an automatic cutting program, after the sawing table clamps a pipe, simultaneously revolving the turntable 1, advancing the sawing table (the sawing table is pneumatically driven forward by the pipe, the sawing table is electrically driven forward by a servo motor synchronously with the pipe), feeding a saw blade (after the pneumatically driven sawing table leaves the original position, after the speed of the electrically driven sawing table and the pipe are synchronously), feeding the saw blade to a set position, starting the calculation of the revolving angle of the turntable 1 by a cutter program control system, returning the saw blade to the original position, feeding the disc cutter, starting the calculation of the revolving angle of the turntable 1 to the set position, cutting off the pipe, returning the disc cutter to the original position, loosening a clamping mechanism of the sawing table, returning the sawing table to the original position, and completing the automatic cutting.
The saw bench is driven by an air cylinder or driven by a servo motor. Pneumatic follow-up (the cylinder only serves as an aid, and the saw table is pushed after the pipe is clamped truly forwards); the saw table is actively synchronized with the speed of the pipe forwards by electric follow-up.
The cutting operation mode also comprises a second cutting operation mode used when the medium-thick-wall PE pipe is cut, a guiding knife is replaced on the saw blade knife cutting mechanism 3, the guiding knife is advanced to cut a guiding knife groove on the pipe, and the disc knife is moved backwards to cut off the pipe.
Specifically: the automatic cutting procedure is started, after the sawing table clamps the pipe, the turntable 1 revolves and runs simultaneously, the sawing table advances, the guide knife feeds, the feeding delay time of the disc knife reaches, the disc knife feeds (the guide knife continues to feed), the disc knife feeds in place, the calculation of the revolution angle of the turntable 1 starts and reaches a set value (pipe cutting), the disc knife and the guide knife retract together, the disc knife and the guide knife retract and return to the original position, the clamping mechanism of the sawing table is loosened, the clamping mechanism is loosened to the original position, the sawing table retreats and returns to the original position, and the automatic cutting is completed.
The cutting operation mode also comprises a third cutting operation mode for cutting the PVC pipe, and the saw blade and cutter cutting mechanism 3 works independently.
Specifically: the automatic cutting program is started, after the sawing table clamps the pipe, the turntable 1 revolves and runs simultaneously, the sawing table advances, the saw blade knife feeds in place, the revolution angle of the turntable 1 starts to be calculated and reaches a set value, the pipe is cut off, the saw blade knife returns to the original position, the clamping mechanism is loosened and loosened to the original position, the sawing table returns to the original position, and the automatic cutting is completed.
The cutting operation mode further includes a fourth cutting operation mode used when cutting the thin-wall PE pipe, and the disc cutter cutting mechanism 2 operates alone.
Specifically: the automatic cutting program is started, after the sawing table clamps the pipe, the turntable 1 revolves and runs simultaneously, the sawing table advances, the disc cutter feeds in place, the revolution angle of the turntable 1 starts to be calculated and reaches a set value, the pipe is cut off, the disc cutter withdraws and returns to the original position, the clamping mechanism of the sawing table is loosened and loosened to the original position, the sawing table withdraws and returns to the original position, and the automatic cutting is completed.
The foregoing is a preferred embodiment of the invention showing and describing the general principles, features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, which have been described in the foregoing description merely illustrates the principles of the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The utility model provides a cutting control method of full-automatic cutout machine, full-automatic cutout machine includes carousel (1) that are equipped with disc cutter cutting mechanism (2) and saw bit sword cutting mechanism (3) to and tray mechanism (4) of bearing tubular product, carousel (1) set up on the saw bench, and the saw bench moves its characterized in that through electric or pneumatic following the pipe: a Bluetooth module is arranged on the rotary table (1), a control signal in the rotary table (1) is subjected to wireless power distribution through the Bluetooth module, a tray mechanism (4) is provided with a bracket (5) and a power lifting assembly for controlling the bracket (5) to move up and down, a first electronic ruler (6) is arranged on the cutter arm of the cutter disc cutter in the travel direction of the cutter arm of the cutter disc cutter, and a second electronic ruler (7) is arranged on the cutter arm of the cutter blade cutter in the travel direction of the cutter blade cutter (3);
the automatic pipe cutting machine also comprises an overtravel induction switch arranged on the full-automatic cutting machine to induce the movement travel position of the saw table, and a clamping mechanism for pneumatically clamping the pipe is arranged on the saw table;
the disc cutter cutting mechanism (2) comprises a disc cutter, a disc cutter arm and a first oil cylinder (13), wherein a piston rod, a guide cutter and the disc cutter of the first oil cylinder (13) are respectively connected with the disc cutter arm in a matched manner, the first electronic ruler (6) is fixedly arranged on a cylinder body of the first oil cylinder (13), the saw blade cutter cutting mechanism (3) comprises the guide cutter, a saw blade cutter arm and a second oil cylinder (14), the piston rod and the saw blade cutter of the second oil cylinder (14) are respectively connected with the saw blade cutter arm in a matched manner, and the second electronic ruler (7) is fixedly arranged on the cylinder body of the second oil cylinder (14); the guide knife and the saw blade knife are respectively and detachably arranged on a knife arm of the same saw blade knife, and the guide knife is provided with an annular step for limiting the depth of the guide knife cut into the pipe;
the hydraulic control system further comprises a hydraulic control loop (10) provided with a proportional flow valve (8) and a proportional overflow valve (9), wherein the hydraulic control loop (10) is further provided with an oil tank, a one-way valve and an electromagnetic valve (11), and the proportional flow valve (8), the proportional overflow valve (9), the one-way valve, the electromagnetic valve (11) and the oil tank are respectively connected with a first oil cylinder (13) or a second oil cylinder (14) through pipelines; the turntable (1) is also provided with a slip ring for passing through a three-phase power supply and a control power supply, and the control power supply is a 24Vdc control power supply;
the tray mechanism (4) comprises a front tray mechanism and a rear tray mechanism which are both provided with a bracket (5) and a power lifting assembly, and the power lifting assemblies of the front tray mechanism and the rear tray mechanism are both provided with a power transmission assembly;
the power transmission assembly comprises a universal coupler and a third motor, a motor shaft of the first motor or the second motor is connected with a motor shaft of the third motor through the universal coupler in a matched manner, a first nut movable seat and a second nut movable seat are arranged on two sides of the bracket (5) respectively corresponding to the first lifting screw and the second lifting screw, and a synchronous belt transmission assembly is arranged between the first motor and the second motor, so that two sides of the bracket (5) respectively move synchronously along the first lifting screw and the second lifting screw through the first nut movable seat and the second nut movable seat;
lifting guide components are arranged on two sides of the bracket (5) in the movement direction of the bracket (5), each lifting guide component comprises a guide rod (15) and guide seats (16) respectively arranged on two sides of the bracket (5), and the guide rods (15) are inserted into the guide seats (16);
the automatic cutting machine also comprises a control panel arranged on the automatic cutting machine and a cutting machine program control system for controlling the automatic cutting machine to work, wherein the cutting machine program control system is a PLC system;
the control method comprises the following steps: manually inputting a pipe specification and a cutting working mode on a control panel, automatically calculating a feeding position and a retracting position of a cutter arm by a cutter program control system according to the input pipe specification and the cutting working mode, automatically calling cutting working control, supporting the pipe by the cutter program control system according to a front tray mechanism and a rear tray mechanism which are controlled by the input pipe specification until the center of the pipe is consistent with the center of a turntable (1) of a sawing table, and automatically storing cutting product data records after cutting is completed by the cutter program control system according to the selection of the corresponding cutting working mode, wherein in each cutting mode, the cutter program control system modifies a flow set value and a pressure set value according to the manual work on the control panel and adjusts the movement speed of the cutter arm on line by pressure and a flow proportional valve in an oil way;
the automatic cutting machine also comprises an emergency stop protection program in the automatic cutting process, if the revolution frequency converter of the turntable (1) is wrong, or a safety door on the cutting machine is opened, or an emergency stop button on the cutting machine is started to act, or the saw table immediately stops at the original position after reaching the position of the overtravel inductive switch, and meanwhile, the cutter is automatically retracted, the clamping mechanism of the saw table is released after the cutter is retracted in place, and the saw table is retracted to the original position after the clamping mechanism is released to the original position;
the cutting working mode comprises a first cutting working mode used for cutting PE pipes with special thick walls, wherein the disc cutter cutting mechanism (2) and the saw blade cutter cutting mechanism (3) work, the saw blade cutter firstly cuts a certain depth, and then the disc cutter cuts off the pipes; the cutting working mode also comprises a second cutting working mode used when the medium-thick-wall PE pipe is cut, a guiding knife is replaced on the saw blade knife cutting mechanism (3), the guiding knife is advanced to cut a guiding knife groove on the pipe, and the disc knife is moved backwards to cut the pipe; the cutting working mode also comprises a third cutting working mode for cutting the PVC pipe, and the saw blade and knife cutting mechanism (3) works independently; the cutting working mode also comprises a fourth cutting working mode used when the thin-wall PE pipe is cut, and the disc cutter cutting mechanism (2) works independently.
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| CN202110430640.6A CN112976113B (en) | 2021-04-21 | 2021-04-21 | Full-automatic cutting machine and cutting control method thereof |
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| CN112976113A (en) | 2021-06-18 |
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