CN115740156B - Automatic stamping forming device for single-slider double-upper die and stamping method thereof - Google Patents
Automatic stamping forming device for single-slider double-upper die and stamping method thereof Download PDFInfo
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- CN115740156B CN115740156B CN202211593542.5A CN202211593542A CN115740156B CN 115740156 B CN115740156 B CN 115740156B CN 202211593542 A CN202211593542 A CN 202211593542A CN 115740156 B CN115740156 B CN 115740156B
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- 239000000463 material Substances 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 7
- 230000001174 ascending effect Effects 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 2
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- 101100408455 Arabidopsis thaliana PLC7 gene Proteins 0.000 description 15
- 239000012778 molding material Substances 0.000 description 4
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Abstract
The invention discloses a single-slider double-upper-die automatic stamping forming device and a stamping method thereof in the field of presses, wherein the stamping method comprises the following steps: the press control unit PLC controls the first upper die to enter a stamping area, and the material to be stamped is put in to trigger a start press signal; the press control unit PLC controls the press to punch the material; the second stamping is carried out by using the second upper die, after the second upper die stamping is finished and the second upper die returns to the top dead center, the sliding block of the press is in a stop state, the ejection action of a piston rod of the cylinder ejection device lasts for 1-3 seconds, and the robot takes out a formed product within the set waiting time; the press is in a standby state at this time, and the above steps are cyclically performed. According to the invention, two sets of stamping dies can be combined on one pair of dies, and one device is used for continuous die changing stamping, so that the action consistency, the in-place accuracy of the push-pull dies and the high efficiency of stamping forming in the die changing process are ensured, and the cost investment of the device is reduced.
Description
Technical Field
The invention belongs to the field of presses, and particularly relates to a single-slider double-upper-die automatic stamping forming device and a stamping method thereof.
Background
In the prior art, the metal stamping forming production process often needs to be subjected to a secondary stamping forming process, two sets of equipment, dies and manpower are required to be input for combined operation, and two different stamping processes are respectively carried out, so that the required formed product is achieved, and the equipment cost and the labor cost are greatly increased. The combination die for the phenomenon has the following defects that two sets of stamping dies are combined on a pair of dies, and one device is used for die changing stamping: however, in the use process, the situation that the pushing die is not in place, so that the die is crushed and operators are injured is often encountered; after stamping of some molding materials is completed, the molding materials can not be taken out after being clamped in a die, and time and labor are consumed.
Disclosure of Invention
The invention aims to provide a single-slider double-upper-die automatic stamping forming device, which can combine two sets of stamping dies on a pair of dies, and uses one device to perform continuous die changing stamping, so that the action consistency in the die changing process, the accuracy in-place of a push-pull die and the stamping forming efficiency are ensured, and the equipment cost investment is reduced.
One of the objects of the present invention is achieved by: the utility model provides a two automatic stamping forming's of mould device on single slider, its characterized in that includes the press, but be equipped with the slider that reciprocates from top to bottom that passes through the connecting rod driven by the bent axle of power on the press, the slider downside is equipped with the cope match-plate pattern, the cope match-plate pattern downside is equipped with the clamp plate, the clamp plate downside is equipped with the die holder that trades that can reciprocate, it goes up the mould and goes up the mould No. two to be equipped with respectively on the die holder to trade, it is equipped with the lower mould to correspond one number on the press and go up the mould No. two, the lower mould below corresponds and is equipped with a jar device, its characterized in that still includes press control unit PLC, position encoder, go up mould push-pull cylinder, cylinder forward solenoid valve, cylinder backward solenoid valve, cylinder forward limit switch and hydraulic pump station.
As a further improvement of the invention, the press control unit is used for controlling the work of the press and other electrical components and collecting signals sent by the position encoder; the position encoder is arranged on a main shaft of the press and is used for acquiring real-time angle signals of a crankshaft of the press and sending the real-time angle signals to a control unit PLC of the press; the upper die push-pull cylinder is arranged on the pressing plate and is used for pushing and pulling the first upper die and the second upper die of the die holder to slide; the cylinder retreating electromagnetic valve and the cylinder advancing electromagnetic valve are used for providing air inlet sources at the front end and the rear end of the upper die push-pull cylinder and controlling pushing and pulling actions of the upper die push-pull cylinder; the cylinder forward limit switch and the cylinder backward limit switch are arranged at the limit position of the piston rod of the upper die push-pull cylinder, and are used for providing a push-pull in-place signal of the upper die push-pull cylinder; the hydraulic pump station is used for controlling the ascending and descending actions of the piston rod of the cylinder pushing device.
The second purpose of the invention is to provide a stamping method of the single-slider double-upper-die automatic stamping forming device, which ensures the action continuity, the in-place accuracy of the push-pull die and the high efficiency of stamping forming in the die changing process, and reduces the equipment cost investment.
The second object of the invention is realized in that: a stamping method of a single-slider double-upper-die automatic stamping forming device comprises the following steps:
(1) The press is at the top dead center, and the press control unit PLC controls the press to enter a preparation to be punched, so that a slide block of the press is at the top dead center position;
(2) The PLC control unit controls the first upper die to enter a stamping area, namely controls a cylinder advancing electromagnetic valve of a push-pull cylinder of the upper die to be powered on, a cylinder retreating electromagnetic valve is powered off, a cylinder advancing limit switch of the push-pull cylinder of the upper die is provided with a signal, the cylinder retreating limit switch is not provided with a signal, a hydraulic pump controls a piston rod of a top cylinder device to be in a descending state, and a position encoder acquires an angle signal of a crankshaft in real time;
(3) The robot is connected with a press control unit PLC, and then turns on a press button switch of the press to trigger a press starting signal;
(4) The PLC controls the press to punch materials, and simultaneously controls a cylinder backward electromagnetic valve of the upper die push-pull cylinder to be powered on and a cylinder forward electromagnetic valve to be powered off when the rotation angle of a crank shaft of the press is 230-270 degrees according to the position encoder angle signals acquired in real time in the step (2), and a cylinder backward limit switch of the upper die push-pull cylinder is provided with signals and is not provided with signals;
(5) The PLC control unit controls the press to finish the punching of the first upper die and returns to the top dead center, detects that the cylinder backward electromagnetic valve of the upper die push-pull cylinder is powered on as in the step (4), the cylinder forward electromagnetic valve is powered off, a signal exists on a cylinder backward limit switch of the upper die push-pull cylinder, when the condition that the cylinder forward limit switch has no signal is automatically judged, the press is automatically controlled to use the second upper die to punch, meanwhile, according to the position encoder angle signal acquired in real time in the step (2), when the crankshaft rotation angle is 230-270 DEG during the second punching of the press, the cylinder forward electromagnetic valve of the upper die push-pull cylinder is controlled to be powered on, the cylinder backward electromagnetic valve is powered off, the cylinder forward limit switch of the upper die push-pull cylinder has a signal, and the cylinder backward limit switch has no signal;
(6) After the press is controlled by a press control unit PLC to finish punching of the second upper die and return to the upper dead center, the press slide block is in a stop state, and meanwhile, the situation that the cylinder advancing electromagnetic valve of the upper die push-pull cylinder is electrified and the cylinder retreating electromagnetic valve is powered off is detected and meets the condition that in the step (5), when a cylinder advancing limit switch of the upper die push-pull cylinder has a signal and the cylinder retreating limit switch has no signal, the hydraulic pump motor of a hydraulic pump station of a top cylinder device is electrified, a lifting electromagnetic valve is electrified, the ejection action of a piston rod of the top cylinder device lasts for 1-3 seconds, and the hydraulic pump motor of the hydraulic pump station of the top cylinder device and the lifting electromagnetic valve are powered off simultaneously;
(7) The PLC touch screen of the press control unit is internally provided with 2-5 seconds of adjustable waiting time, the robot takes out a formed product within the set waiting time, after the waiting time is reached, the PLC of the press control unit controls a hydraulic pump motor of a hydraulic pump station of the top cylinder device to be powered on, a descending electromagnetic valve to be powered on, the falling action lasts for 1-3 seconds, and the hydraulic pump motor of the hydraulic pump station of the top cylinder device and an ascending electromagnetic valve are powered off simultaneously;
(8) The press is in a standby state at this time, and steps (3) - (7) are circularly performed.
Compared with the prior art, the invention has the beneficial effects that: two sets of stamping dies are combined on a pair of dies, and one device is used for continuous die changing stamping, so that the action continuity, the in-place accuracy of the push-pull dies and the high efficiency of stamping forming in the die changing process are ensured, and the cost investment of the device is reduced; the limit detection switch is used for being safely connected with the press equipment, so that the production safety of the equipment and personnel is ensured; the hydraulic jacking cylinder is used for automatically jacking the molding material on the lower die, so that the productivity of the equipment is improved.
As a further improvement of the invention, the position encoder is consistent with the angle signal of the crank shaft of the press, and when the position encoder and the crank shaft of the press are at 0 DEG, the sliding block is at the top dead center; the slide is at bottom dead center when the position encoder and the crankshaft of the press are at 180 degrees, and the slide is returned to top dead center when the position encoder and the crankshaft of the press are at 360 degrees. Ensuring that the position encoder is consistent with the angular signal of the crankshaft.
In order to ensure safety and prevent problems during die changing, in the step (5), the PLC of the control unit of the press automatically judges that the cylinder backward electromagnetic valve of the upper die push-pull cylinder required by the second stamping by using the second upper die is electrified, the cylinder forward electromagnetic valve is powered off, a signal is provided for a cylinder backward limit switch of the upper die push-pull cylinder, and if the condition that the signal is not provided for the cylinder forward limit switch is not provided, the press automatically stops at the upper dead center, the stamping is not performed, and the signal of the press is started only by re-triggering the press after the condition is met.
In order to facilitate control of a press control unit and control of an upper die push-pull cylinder and a cylinder pushing device, a touch screen is arranged on a PLC of the press control unit; the front end and the rear end of the upper die push-pull cylinder are respectively provided with an air inlet, the front end and the rear end of the upper die push-pull cylinder are respectively provided with an air cylinder forward limit switch and an air cylinder backward limit switch, the front end and the rear end of the upper die push-pull cylinder are respectively provided with an air cylinder backward electromagnetic valve and an air cylinder forward electromagnetic valve, and the extending end of a piston rod of the upper die push-pull cylinder is connected with a die changing seat; the upper end and the lower end of the top cylinder device are respectively provided with an oil inlet, a lifting electromagnetic valve of the hydraulic pump station controls a pipeline connected with the oil inlet below the top cylinder device, a descending electromagnetic valve of the hydraulic pump station controls a pipeline connected with the oil inlet above the top cylinder device, a piston rod extending end of the top cylinder device is provided with a top block, and a through hole which can be penetrated by the top block is correspondingly formed in the lower die. The cylinder pushing device is a hydraulic cylinder.
In order to facilitate the manual control of the lifting of the top cylinder device, the press machine is provided with a manual button for controlling the lifting and the descending actions of a piston rod of the top cylinder device of the hydraulic pump station.
Drawings
Fig. 1 is a schematic structural view of a press according to the present invention.
Fig. 2 is a partial enlarged view of fig. 1.
Fig. 3 is a control schematic of the present invention.
The device comprises a press machine 1, a slide block 2, an upper die plate 3, a press plate 4, a die changing seat 5, an upper die No. 6, an upper die No. 7, a lower die 8, a cylinder ejection device 9, a press machine control unit PLC10, a touch screen 10a, a position encoder 11, a push-pull cylinder 12, a cylinder advancing electromagnetic valve 13, a cylinder retreating electromagnetic valve 14, a cylinder advancing limit switch 15, a cylinder retreating limit switch 16, a hydraulic pump station 17, a hydraulic pump station 18, a hydraulic pump motor 19, an ascending electromagnetic valve 20, a descending electromagnetic valve 21 and a through hole.
Detailed Description
1-3, a single-slider double-upper-die automatic stamping forming device comprises a press 1, wherein a slider 2 which is driven by a power crankshaft through a connecting rod and can reciprocate up and down is arranged on the press 1, an upper die plate 3 is arranged on the lower side of the slider 2, a pressing plate 4 is arranged on the lower side of the upper die plate 3, a die changing seat 5 which can move back and forth is arranged on the lower side of the pressing plate 4, a first upper die 6 and a second upper die 7 are respectively arranged on the die changing seat 5, a lower die 8 is arranged on the press 1 corresponding to the first upper die 6 and the second upper die 7, a cylinder jacking device 9 is correspondingly arranged below the lower die 8, and the device also comprises a press control unit PLC10, a position encoder 11, an upper die push-pull cylinder 12, a cylinder advancing electromagnetic valve 13, a cylinder retreating electromagnetic valve 14, a cylinder advancing limit switch 15, a cylinder retreating limit switch 16 and a hydraulic pump station 17;
the press control unit PLC10 is used for controlling the work of the press 1 and other electrical components and collecting signals sent by the position encoder 11; the position encoder 11 is arranged on a main shaft of the press 1, the main shaft of the press 1 is a transmission shaft synchronous with a crankshaft, and is used for acquiring real-time angle signals of the crankshaft of the press 1 and transmitting the real-time angle signals to the press control unit PLC10; the position encoder 11 is consistent with the angle signal of the crank shaft of the press 1, and when the position encoder 11 and the crank shaft of the press 1 are at 0 DEG, the slide block 2 is at the top dead center; when the position encoder 11 and the crankshaft of the press 1 are at 180 degrees, the sliding block 2 is at the bottom dead center, and when the position encoder 11 and the crankshaft of the press 1 are at 360 degrees, the sliding block 2 returns to the top dead center again, so that the angle signals of the position encoder 11 and the crankshaft are consistent; the upper die push-pull cylinder 12 is arranged on the pressing plate 4 and is used for pushing and pulling the first upper die 6 and the second upper die 7 of the die changing seat 5 to slide; the cylinder retreating electromagnetic valve 14 and the cylinder advancing electromagnetic valve 13 are used for providing air inlet sources at the front end and the rear end of the upper die push-pull cylinder 12 and controlling push-pull actions of the upper die push-pull cylinder 12; the cylinder forward limit switch 15 and the cylinder backward limit switch 16 are arranged at the limit position of the piston rod of the upper die push-pull cylinder 12, and are used for providing a push-pull signal of the upper die push-pull cylinder 12; the hydraulic pump station 17 is used for controlling the lifting and lowering actions of the piston rod of the top cylinder device 9.
A stamping method of a single-slider double-upper-die automatic stamping forming device comprises the following steps:
(1) The press 1 is at the top dead center, the press control unit PLC10 controls the press to enter a ready to be punched, the driving motor of the press enters a working state, and the gas circuit and the oil circuit of the press work, so that the slide block 2 of the press is at the top dead center position;
(2) The press control unit PLC10 controls the upper die 6 to enter a stamping area, namely controls a cylinder advancing electromagnetic valve 13 of an upper die push-pull cylinder 12 to be powered on, a cylinder retreating electromagnetic valve 14 to be powered off, a cylinder advancing limit switch 15 of the upper die push-pull cylinder 12 has a signal, a cylinder retreating limit switch 16 has no signal, a hydraulic pump controls a piston rod of a top cylinder device 9 to be in a descending state, and a position encoder 11 acquires an angle signal of a crankshaft in real time;
(3) The robot is connected with a press control unit PLC10, and then turns on a two-hand button switch of the press to trigger a press starting signal, wherein the two-hand button switch is a switch for controlling the press to press from a top dead center;
(4) The press control unit PLC10 controls the press to punch materials, and simultaneously according to the angle signals of the position encoder 11 acquired in real time in the step (2), when the rotation angle of a crank shaft of the press is 230-270 degrees, the actual action angle is higher than the actual action angle when the upper die is completely separated from the lower die 8, and the angle can be set in the touch screen 10a to be adjustable; the cylinder backward electromagnetic valve 14 of the upper die push-pull cylinder 12 is controlled to be powered on, the cylinder forward electromagnetic valve 13 is powered off, a signal is provided for the cylinder backward limit switch 16 of the upper die push-pull cylinder 12, and the cylinder forward limit switch 15 is not provided with a signal;
(5) The press control unit PLC10 controls the press to finish the stamping of the first upper die 6 and returns to the upper dead center, detects that the cylinder backward electromagnetic valve 14 of the upper die push-pull cylinder 12 is electrified and the cylinder forward electromagnetic valve 13 is in power failure, and when the cylinder backward limit switch 16 of the upper die push-pull cylinder 12 has a signal, the press is automatically controlled to perform the second stamping by using the second upper die 7 after the condition that the cylinder forward limit switch 15 has no signal is judged to be met, meanwhile, according to the angle signal of the position encoder 11 acquired in real time in the step (2), when the crank shaft rotation angle is 230 DEG to 270 DEG during the second stamping of the press, the actual action angle is more than the actual action angle, when the die is completely separated from the lower die 8, the angle can be set in the touch screen 10a, the cylinder forward electromagnetic valve 13 of the upper die push-pull cylinder 12 is controlled to be electrified and the cylinder backward electromagnetic valve 14 is in power failure, and the cylinder forward limit switch 15 of the upper die push-pull cylinder 12 has a signal, and the cylinder backward limit switch 16 has no signal; in order to ensure safety and prevent problems during die changing, in the step (5), the control unit PLC10 of the press automatically judges that the cylinder backward electromagnetic valve 14 of the upper die push-pull cylinder 12 required by the press for the second stamping by using the second upper die 7 is powered on, the cylinder forward electromagnetic valve 13 is powered off, a cylinder backward limit switch 16 of the upper die push-pull cylinder 12 has a signal, and when the condition that the cylinder forward limit switch 15 has no signal is not met, the press automatically stops at the upper dead center and does not stamp, and the signal of the press can be started only by re-triggering the press after the condition is met;
(6) After the press machine is controlled by the press machine control unit PLC10 to finish the stamping of the second upper die 7 and return to the upper dead center, the press machine slide block 2 is in a stop state, meanwhile, the cylinder advancing electromagnetic valve 13 of the upper die push-pull cylinder 12 is detected to be electrified, the cylinder retreating electromagnetic valve 14 is powered off, and when a signal exists on the cylinder advancing limit switch 15 of the upper die push-pull cylinder 12 and no signal exists on the cylinder retreating limit switch 16, the hydraulic pump motor 18 of the hydraulic pump station 17 of the top cylinder device 9 is controlled by the press machine control unit PLC10 to be electrified, the ascending electromagnetic valve 19 is electrified, the ejection action of a piston rod of the top cylinder device 9 lasts for 1-3 seconds, the ejection action duration of the top cylinder device 9 is adjustable on the interface of the touch screen 10a, and the ejection time required by different products is different; the hydraulic pump motor 18 and the lifting electromagnetic valve 19 of the hydraulic pump station 17 of the top cylinder device 9 are powered off simultaneously;
(7) The method comprises the steps that 2-5 seconds of adjustable waiting time is set in a touch screen 10a of a press control unit PLC10, a robot takes out a formed product within the set waiting time, after the waiting time is reached, the press control unit PLC10 controls a hydraulic pump motor 18 of a hydraulic pump station 17 of a top cylinder device 9 to be powered on, a descending electromagnetic valve 20 to be powered on, the falling action lasts for 1-3 seconds, the falling action duration is adjustable at the interface of the touch screen 10a, ejection time required by different products is different, and the hydraulic pump motor 18 and a lifting electromagnetic valve 19 of the hydraulic pump station 17 of the top cylinder device 9 are powered off simultaneously;
(8) The press is in a standby state at this time, and steps (3) - (7) are circularly performed.
In order to facilitate control of the press control unit and control of the upper die push-pull cylinder 12 and the cylinder ejection device 9, a touch screen 10a is arranged on the press control unit PLC10; the front end and the rear end of the upper die push-pull cylinder 12 are respectively provided with an air inlet, the front end and the rear end of the upper die push-pull cylinder 12 are respectively provided with a cylinder advance limit switch 15 and a cylinder retreat limit switch 16, the front end and the rear end of the upper die push-pull cylinder 12 are respectively provided with a cylinder retreat electromagnetic valve 14 and a cylinder advance electromagnetic valve 13, and the extending end of a piston rod of the upper die push-pull cylinder 12 is connected with the die changing seat 5; the upper and lower both ends of top jar device 9 all are equipped with the oil inlet, and the pipeline that links to each other with the oil inlet of top jar device 9 below is controlled to the rising solenoid valve 19 of hydraulic power unit 17, and the pipeline that links to each other with the oil inlet of top jar device 9 top is controlled to the decline solenoid valve 20 of hydraulic power unit 17, and the piston rod of top jar device 9 stretches out the end and is equipped with the kicking block, corresponds to run through on the lower mould 8 and has offered the through-hole 21 that can hold the kicking block and pass. The cylinder pushing device 9 is a hydraulic cylinder. In order to facilitate the manual control of the lifting of the top cylinder device 9, the press 1 is provided with a manual button for controlling the lifting and lowering actions of the piston rod of the top cylinder device 9 of the hydraulic pump station 17.
The invention has the advantages that: two sets of stamping dies are combined on a pair of dies, and one device is used for continuous die changing stamping, so that the action continuity, the in-place accuracy of the push-pull dies and the high efficiency of stamping forming in the die changing process are ensured, and the cost investment of the device is reduced; the limit detection switch is used for being safely connected with the press equipment, so that the production safety of the equipment and personnel is ensured; the hydraulic cylinder is used for automatically ejecting the molding material on the lower die 8, so that the productivity of the equipment is improved.
The invention is not limited to the above embodiments, and based on the technical solution disclosed in the invention, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the invention.
Claims (2)
1. The stamping method of the device for automatically stamping and forming the single-slider double-upper die comprises a press machine, wherein a slider which is driven by a crankshaft with power and can reciprocate up and down through a connecting rod is arranged on the press machine, an upper die plate is arranged on the lower side of the slider, a pressing plate is arranged on the lower side of the upper die plate, a die changing seat capable of moving back and forth is arranged on the lower side of the pressing plate, a first upper die and a second upper die are respectively arranged on the die changing seat, a lower die is arranged on the press machine corresponding to the first upper die and the second upper die, a cylinder jacking device is correspondingly arranged below the lower die, and the device further comprises a press machine control unit PLC, a position encoder, an upper die push-pull cylinder, a cylinder advancing electromagnetic valve, a cylinder retreating electromagnetic valve, a cylinder advancing limit switch, a cylinder retreating limit switch and a hydraulic pump station; the press control unit PLC is used for controlling the work of a press and other electrical elements and collecting signals sent by the position encoder; the position encoder is arranged on a crankshaft of the press and used for collecting real-time angle signals of the crankshaft of the press and sending the real-time angle signals to a control unit PLC of the press; the upper die push-pull cylinder is arranged on the pressing plate and is used for pushing and pulling the first upper die and the second upper die of the die holder to slide; the cylinder retreating electromagnetic valve and the cylinder advancing electromagnetic valve are used for providing air inlet sources at the front end and the rear end of the upper die push-pull cylinder and controlling pushing and pulling actions of the upper die push-pull cylinder; the cylinder forward limit switch and the cylinder backward limit switch are arranged at the limit position of the piston rod of the upper die push-pull cylinder, and are used for providing a push-pull in-place signal of the upper die push-pull cylinder; the hydraulic pump station is used for controlling the ascending and descending actions of a piston rod of the cylinder pushing device; the stamping method is characterized by comprising the following steps of:
(1) The press is at the top dead center, and the press control unit PLC controls the press to enter a preparation to be punched, so that a slide block of the press is at the top dead center position;
(2) The PLC control unit controls the first upper die to enter a stamping area, namely controls a cylinder advancing electromagnetic valve of a push-pull cylinder of the upper die to be powered on, a cylinder retreating electromagnetic valve is powered off, a cylinder advancing limit switch of the push-pull cylinder of the upper die is provided with a signal, the cylinder retreating limit switch is not provided with a signal, a hydraulic pump controls a piston rod of a top cylinder device to be in a descending state, and a position encoder acquires an angle signal of a crankshaft in real time;
(3) The robot is connected with a press control unit PLC, and then turns on a press button switch of the press to trigger a press starting signal;
(4) The PLC control unit controls the press to punch materials, and simultaneously controls a cylinder backward electromagnetic valve of the upper die push-pull cylinder to be powered on and a cylinder forward electromagnetic valve to be powered off when the rotation angle of a crank shaft of the press is 230-270 degrees according to the position encoder angle signals acquired in real time, and a cylinder backward limit switch of the upper die push-pull cylinder is provided with signals and is not provided with signals;
(5) The PLC control unit controls the press to finish the punching of the first upper die and returns to the top dead center, detects that the cylinder backward electromagnetic valve of the upper die push-pull cylinder is powered on, the cylinder forward electromagnetic valve is powered off, a signal is arranged on a cylinder backward limit switch of the upper die push-pull cylinder, when the condition that the cylinder forward limit switch is not provided with the signal is judged by oneself, the press is automatically controlled to use the second upper die to punch, meanwhile, according to the position encoder angle signal acquired in real time, when the rotation angle of a crankshaft is positioned at 230-270 DEG during the second punching of the press, the cylinder forward electromagnetic valve of the upper die push-pull cylinder is controlled to be powered on, the cylinder backward electromagnetic valve is powered off, the cylinder forward limit switch of the upper die push-pull cylinder is provided with the signal, and the cylinder backward limit switch is not provided with the signal;
the control unit PLC of the press machine automatically judges that a cylinder backward electromagnetic valve of an upper die push-pull cylinder required by the second stamping of the press machine by using the second upper die is powered on, a cylinder forward electromagnetic valve is powered off, a cylinder backward limit switch of the upper die push-pull cylinder has a signal, and when the condition that the cylinder forward limit switch has no signal is not met, the press machine automatically stops at a top dead center and does not stamp, and the press machine can be started only by re-triggering a start press machine signal after the condition is met;
(6) After the press is controlled by a press control unit PLC to finish punching of the second upper die and return to the upper dead center, the press slide block is in a stop state, and meanwhile, the situation that the cylinder advancing electromagnetic valve of the upper die push-pull cylinder is electrified and the cylinder retreating electromagnetic valve is powered off is detected and meets the condition that in the step (5), when a cylinder advancing limit switch of the upper die push-pull cylinder has a signal and the cylinder retreating limit switch has no signal, the hydraulic pump motor of a hydraulic pump station of a top cylinder device is electrified, a lifting electromagnetic valve is electrified, the ejection action of a piston rod of the top cylinder device lasts for 1-3 seconds, and the hydraulic pump motor of the hydraulic pump station of the top cylinder device and the lifting electromagnetic valve are powered off simultaneously;
(7) The PLC touch screen of the press control unit is internally provided with 2-5 seconds of adjustable waiting time, the robot takes out a formed product within the set waiting time, after the waiting time is reached, the PLC of the press control unit controls a hydraulic pump motor of a hydraulic pump station of the top cylinder device to be powered on, a descending electromagnetic valve to be powered on, the falling action lasts for 1-3 seconds, and the hydraulic pump motor of the hydraulic pump station of the top cylinder device and the descending electromagnetic valve are powered off simultaneously;
(8) The press is in a standby state at the moment, and the steps (3) - (7) are circularly carried out;
the position encoder is consistent with an angle signal of a crankshaft of the press, and when the position encoder and the crankshaft of the press are at 0 DEG, the sliding block is at a top dead center; when the crank shafts of the position encoder and the press are at 180 degrees, the sliding block is at the bottom dead center, and when the crank shafts of the position encoder and the press are at 360 degrees, the sliding block returns to the top dead center;
a touch screen is arranged on the press control unit PLC; the front end and the rear end of the upper die push-pull cylinder are respectively provided with an air inlet, the front end and the rear end of the upper die push-pull cylinder are respectively provided with an air cylinder forward limit switch and an air cylinder backward limit switch, the front end and the rear end of the upper die push-pull cylinder are respectively provided with an air cylinder backward electromagnetic valve and an air cylinder forward electromagnetic valve, and the extending end of a piston rod of the upper die push-pull cylinder is connected with a die changing seat; the upper end and the lower end of the top cylinder device are respectively provided with an oil inlet, a lifting electromagnetic valve of the hydraulic pump station controls a pipeline connected with the oil inlet below the top cylinder device, a descending electromagnetic valve of the hydraulic pump station controls a pipeline connected with the oil inlet above the top cylinder device, a piston rod extending end of the top cylinder device is provided with a top block, and a through hole which can be penetrated by the top block is correspondingly formed in the lower die.
2. The stamping method of the single-slider double-upper-die automatic stamping forming device according to claim 1, wherein the press machine is provided with a manual button for controlling the ascending and descending actions of a piston rod of a top cylinder device of the hydraulic pump station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211593542.5A CN115740156B (en) | 2022-12-13 | 2022-12-13 | Automatic stamping forming device for single-slider double-upper die and stamping method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211593542.5A CN115740156B (en) | 2022-12-13 | 2022-12-13 | Automatic stamping forming device for single-slider double-upper die and stamping method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115740156A CN115740156A (en) | 2023-03-07 |
| CN115740156B true CN115740156B (en) | 2024-02-09 |
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| CN202211593542.5A Active CN115740156B (en) | 2022-12-13 | 2022-12-13 | Automatic stamping forming device for single-slider double-upper die and stamping method thereof |
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| CN116786666B (en) * | 2023-08-25 | 2023-10-24 | 江苏兴锻智能装备科技有限公司 | Servo stamping equipment with predetermined calibration function |
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