CN110239129A - A kind of pressing machine, control circuit and working method - Google Patents
A kind of pressing machine, control circuit and working method Download PDFInfo
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- CN110239129A CN110239129A CN201910462139.0A CN201910462139A CN110239129A CN 110239129 A CN110239129 A CN 110239129A CN 201910462139 A CN201910462139 A CN 201910462139A CN 110239129 A CN110239129 A CN 110239129A
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000007599 discharging Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
- B30B1/38—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure wherein the plungers are operated by pressure of a gas, e.g. steam, air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/168—Control arrangements for fluid-driven presses for pneumatically driven presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of pressing machines, including liftable upper mold and the slide unit that lower part of upper die can be passed in and out, the basal sliding of slide unit is connected with guide rail, slide unit is mounted on rodless cylinder, enable rodless cylinder that slide unit to be driven to move along a straight line along guide rail, the connection of the output end of upper mold and increased stroke-adjustable gas cylinder, rodless cylinder connect double end solenoid valve, and increased stroke-adjustable gas cylinder connects single head solenoid valve.The invention also discloses the control circuit of pressing machine and working methods.Pressing machine of the invention has the advantages that efficient, safety.
Description
Technical field
The present invention relates to pressing technical field, in particular to a kind of pressing machine, control circuit and working methods.
Background technique
Pressing machine on the market includes liftable upper mold, and product clamper is fixed on the lower section of upper mold.When picking and placing product,
It is required that the both hands of operator reach operation in machine, security risk is increased, and the operating efficiency of existing pressing machine is low.
Summary of the invention
According to an aspect of the invention, there is provided a kind of pressing machine, which has the advantages that safe and efficient.
A kind of pressing machine, including liftable upper mold and the slide unit that can pass in and out lower part of upper die, the basal sliding of slide unit is connected
There is guide rail, slide unit is mounted on rodless cylinder, enables rodless cylinder that slide unit to be driven to move along a straight line along guide rail, upper mold and adjustable row
The output end of stroke cylinder connects, and rodless cylinder connects double end solenoid valve, and increased stroke-adjustable gas cylinder connects single head solenoid valve.
The beneficial effects of the present invention are: (1) operator machine outside can load product and feeding, improve equipment
Safety；(2) can be avoided that pressing machine powers off rear jig and product suddenly pulls phenomenon.
Preferably, the station of pressing machine be equipped with a power switch SB and two it is concatenated start switch SB1, power supply is opened
Pass SB is self-lock switch, and starting switch SB1 is self-resetting switch.
Preferably, the both ends of rodless cylinder movement travel are respectively equipped with first stroke switch X1 and third trip switch X3.
Preferably, the outer wall of increased stroke-adjustable gas cylinder is equipped with second stroke switch X2.
Preferably, there are four stations, each station to have a power switch SB and two concatenated startings for pressing machine tool
Switch SB1.
Preferably, pressing machine includes workbench, and rodless cylinder, first stroke switch X1 and third trip switch X3 are mounted on
The bottom surface of workbench, workbench are equipped with elongated slot, and the side of rodless cylinder is equipped with connecting rod, after one end of connecting rod passes through elongated slot
It is secured to the bottom surface of slide unit.
Preferably, the end of slide unit movement travel is equipped with trimmer valve.
A kind of pressing machine control circuit, including power switch SB, two start switch SB1, the first intermediate relay KA1,
Second intermediate relay KA2, third intermediate relay KA3, the 4th intermediate relay KA4, first stroke switch X1, second stroke
Switch X2, third trip switch X3, time relay KT, the first coil M1 of double end solenoid valve, double end solenoid valve the second line
Enclose the coil M2 of M3 and single head solenoid valve.
Preferably, power switch SB is self-lock switch, and starting switch SB1 is self-resetting switch, and power switch SB, starting are opened
Power supply two is linked into after closing the coil series connection of SB1, the normally-closed contact of the 4th intermediate relay KA4, the first intermediate relay KA1
End, the normally opened contact of the first intermediate relay KA1 with start switch that SB1 is in parallel, the normally-closed contact of third intermediate relay KA3 and
After first coil M1 series connection with the normally-closed contact of the 4th intermediate relay KA4 and the coils from parallel connection of coils of the first intermediate relay KA1, the
One stroke switch X1 connect with the coil of the second intermediate relay KA2 after with the normally-closed contact of the 4th intermediate relay KA4 and
The normally opened contact of the coils from parallel connection of coils of one intermediate relay KA1, the second intermediate relay KA2 is in parallel with first stroke switch X1, when
Between the coil of relay KT and the coils from parallel connection of coils of the second intermediate relay KA2, the normally-closed contact of time relay KT and coil M2
After series connection with the coils from parallel connection of coils of time relay KT, after second stroke switch X2 connects with the coil of third intermediate relay KA3
It is in parallel with second stroke switch X2 with the normally opened contact of the coils from parallel connection of coils of time relay KT, third intermediate relay KA3, second
The coils from parallel connection of coils of coil M3 and third intermediate relay KA3, the coil string of third trip switch X3 and the 4th intermediate relay KA4
With the coils from parallel connection of coils of time relay KT after connection, the normally opened contact of the 4th intermediate relay KA4 is in parallel with third trip switch X3.
A kind of pressing machine working method, comprising the following steps:
S1: charging, power switch SB are closed, and the fixed fixture that product to be laminated is housed on slide unit, two start switch SB1
After being closed at, the coil of the first intermediate relay KA1 is powered, and is closed the normally opened contact of the first intermediate relay KA1, into
And the first coil M1 of double end solenoid valve is made to be powered, gas source valve is opened, and makes rodless cylinder that slide unit to be sent to the lower section of upper mold；
S2: pressing, rodless cylinder trigger first stroke switch X1, make the second intermediate relay KA2 coil and the time after
The coil of electric appliance KT is powered simultaneously, and time relay KT starts timing, and the normally opened contact closure of the second intermediate relay KA2 is single
Head solenoid valve coil M2 be powered, gas source valve open, make increased stroke-adjustable gas cylinder drive upper mold move down, upper mold in place after
Kept for the time of setting；
S3: die sinking, setting time in place when, the normally-closed contact of time relay KT disconnects, the line of single head solenoid valve
Enclose M2 power-off, the gas source valve of front opening close, closing when, opens another gas source valve, the work of increased stroke-adjustable gas cylinder
Plug is retracted；
S4: discharging triggers second stroke switch X2 during the piston of increased stroke-adjustable gas cylinder is retracted, makes among third
The coil of relay KA3 is powered, and the normally opened contact closure of third intermediate relay KA3 makes the second coil M3 of double end solenoid valve
Be powered, the gas source valve of front opening close, another gas source valve can be opened when closing, rodless cylinder drives slide unit
It retracts, third trip switch X3 can be triggered while retracting in place, the coil of the 4th intermediate relay KA4 is made to be powered, the 4th
The normally-closed contact of intermediate relay KA4 disconnects, and the coil blackout of the first intermediate relay KA1 makes the first intermediate relay KA1's
Closed end disconnects.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the pressing machine of an embodiment of the present invention.
Fig. 2 is the partial schematic diagram of the rodless cylinder position of the pressing machine of an embodiment of the present invention.
Fig. 3 is the position view of the second stroke switch of the pressing machine of an embodiment of the present invention.
Fig. 4 is double end solenoid valve schematic diagram used by the pressing machine of an embodiment of the present invention.
Fig. 5 is single head solenoid valve schematic diagram used by the pressing machine of an embodiment of the present invention.
Fig. 6 is the electric operation control circuit figure of the pressing machine of an embodiment of the present invention.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in Figs. 1-2, a kind of pressing machine including liftable upper mold 1 and can pass in and out the slide unit 2 below upper mold 1, slide unit
2 basal sliding is connected with guide rail 3, and slide unit 2 is mounted on rodless cylinder 4, and rodless cylinder 4 is enable to drive slide unit 2 along guide rail 3
Linear motion, upper mold 1 are connect with the output end of increased stroke-adjustable gas cylinder 5, and rodless cylinder 4 connects double end solenoid valve, range-adjustable gas
Cylinder 5 connects single head solenoid valve.
Embodiments of the present invention provide a kind of pressing machine, and the slide unit 2 of the pressing machine enters the lower section of upper mold 1, can also be with
It is skidded off from the lower section of upper mold 1, operator can load product and feeding outside machine, improve the safety of equipment.
Fig. 4 schematically shows 10 schematic diagram of double end solenoid valve used by the pressing machine of an embodiment of the present invention.
Fig. 5 schematically shows 11 schematic diagram of single head solenoid valve used by the pressing machine of an embodiment of the present invention.Double end electromagnetism
There are two coil, single head solenoid valves 11 to have a coil for the tool of valve 10.Double end solenoid valve 10 is used to control the gas of rodless cylinder 4
Source, single head solenoid valve 11 control the gas source of increased stroke-adjustable gas cylinder 5.Double end solenoid valve and single head solenoid valve are commercially available solenoid valve.
In pressing, rodless cylinder 4 is always maintained at after ejecting, and increased stroke-adjustable gas cylinder 5 presses upper mold 1 downwardly against upper mold 1
It firmly fixture and product and keeps, structure at this time is just as an inverted " t " font.There are a risks in this period, such as
There is lightning or power-off at this time in fruit, and rodless cylinder 4 and increased stroke-adjustable gas cylinder 5 are retracted simultaneously, occurs as soon as one and pulls phenomenon, folder
Tool and product, which just have, is pullled the possibility to break down.In order to solve this problem, a specific embodiment of the invention uses double end
Solenoid valve control rodless cylinder 4, no matter the ejection of rodless cylinder 4 goes how many, and rodless cylinder 4 can remain stationary after power-off suddenly, from
And it avoids and pulls phenomenon.If powering off rodless cylinder 4 suddenly will retract with single seat solenoid valve control rodless cylinder 4 at once
Come, and occurs above-mentioned pullling phenomenon.
Preferably, the station of pressing machine be equipped with a power switch SB and two it is concatenated start switch SB1, power supply is opened
Pass SB is self-lock switch, and starting switch SB1 is self-resetting switch.After pushing power switch SB, pressing electromechanical source is connected.Power supply is opened
After closing SB closure, power switch SB is able to maintain closed state.Starting switch SB1 is the switch that can be automatically reset, that is, is pressed
After starting switch SB1, SB1 closure is started switch, after stopping pressing, starting switch SB1 reset is in an off state circuit.It is excellent
Selection of land, two start switch and have enough spacing between SB1, and the size of spacing should make operator can only with the hands could be same
When started by press switch SB1.The pressing machine of present embodiment requires operator must with the hands started by press switch SB1 ability simultaneously
Pressing machine can be started, which can prevent employee from accidentally encountering and start switch SB1, also prevented employee violate working specification, one
Hand operates another hand starting pressing machine in machine, improves the safety of pressing machine.
Preferably, as shown in Fig. 2, the both ends of 4 movement travel of rodless cylinder are respectively equipped with first stroke switch X1 and third
Travel switch X3.In charging, rodless cylinder 4 triggers first stroke switch X1, and slide unit 2 is made to be parked in 1 lower section of upper mold.It is discharging
When, rodless cylinder 4 triggers third trip switch X3, and slide unit 2 is made to be parked in outside, operator's feeding.
Preferably, as shown in figure 3, the outer wall of increased stroke-adjustable gas cylinder 5 is equipped with second stroke switch X2.After die sinking, when adjustable
When the piston of stroke cylinder 5 triggers second stroke switch X2, rodless cylinder 4 drives slide unit 2 to skid off below upper mold 1.
Preferably, there are four stations, each station to have a power switch SB and two concatenated startings for pressing machine tool
Switch SB1.Operator operates four stations on same several platforms, reduces the waiting time, improves operating efficiency.
Preferably, pressing machine includes workbench 6, rodless cylinder 4, first stroke switch X1 and third trip switch X3 installation
In the bottom surface of workbench 6, workbench 6 is equipped with elongated slot 7, and the side of rodless cylinder 4 is equipped with connecting rod 8, and one end of connecting rod 8 is worn
It crosses after elongated slot 7 and is secured to the bottom surface of slide unit 2.
Preferably, the end of 2 movement travel of slide unit is equipped with trimmer valve 9.When slide unit 2 after sliding in place below upper mold 1 to touching
To trimmer valve 9, trimmer valve 9 plays the role of buffering.
According to another aspect of the present invention, as shown in fig. 6, providing a kind of pressing machine control circuit, including power switch SB,
Two start switch SB1, the first intermediate relay KA1, the second intermediate relay KA2, third intermediate relay KA3, in the 4th
Between relay KA4, first stroke switch X1, second stroke switch X2, third trip switch X3, time relay KT, double end electricity
First coil M1, the second coil M3 of double end solenoid valve and the coil M2 of single head solenoid valve of magnet valve.For with multiple stations
Pressing machine, the corresponding control circuit of each station.
Wherein, power switch SB is self-lock switch, and starting switch SB1 is self-resetting switch, power switch SB, is started switch
SB1, the normally-closed contact of the 4th intermediate relay KA4, the first intermediate relay KA1 coil series connection after be linked into both ends of power,
The normally opened contact of first intermediate relay KA1 with start switch that SB1 is in parallel, the normally-closed contact of third intermediate relay KA3 and
One coil M1 series connection after with the normally-closed contact of the 4th intermediate relay KA4 and the coils from parallel connection of coils of the first intermediate relay KA1, first
Normally-closed contact and first with the 4th intermediate relay KA4 after travel switch X1 connects with the coil of the second intermediate relay KA2
The normally opened contact of the coils from parallel connection of coils of intermediate relay KA1, the second intermediate relay KA2 is in parallel with first stroke switch X1, the time
The coils from parallel connection of coils of the coil of relay KT and the second intermediate relay KA2, the normally-closed contact and coil M2 of time relay KT are gone here and there
After connection with the coils from parallel connection of coils of time relay KT, second stroke switch X2 connect with the coil of third intermediate relay KA3 after with
The normally opened contact of the coils from parallel connection of coils of time relay KT, third intermediate relay KA3 is in parallel with second stroke switch X2, the second line
The coils from parallel connection of coils of M3 and third intermediate relay KA3 are enclosed, third trip switch X3 connects with the coil of the 4th intermediate relay KA4
Afterwards with the coils from parallel connection of coils of time relay KT, the normally opened contact of the 4th intermediate relay KA4 is in parallel with third trip switch X3.
The working principle of control circuit of the invention is: closure power switch SB, both hands press two and start switch SB1,
The coil of first intermediate relay KA1 is powered, the normally opened contact closure of the first intermediate relay KA1, makes the of double end solenoid valve
One coil M1 remains powered on state, and gas source valve is opened, and rodless cylinder 4 drives slide unit 2 to push ahead, and stops later in place.?
Rodless cylinder 4 in place while can trigger first stroke switch X1, then make the second intermediate relay KA2 coil and the time after
The coil of electric appliance KT is powered simultaneously, and time relay KT starts timing, and the normally opened contact of the second intermediate relay KA2 is inhaled
It closes, the coil M2 of single head solenoid valve is powered, and gas source valve is opened, and the piston driving upper mold 1 of increased stroke-adjustable gas cylinder 5 moves down；
Kept for a period of time after the movement in place of upper mold 1, setting time in place when, the normally-closed contact of time relay KT disconnects,
The coil M2 of single head solenoid valve is powered off, the gas source valve of front opening close, closing when, can open another gas source valve,
The piston of increased stroke-adjustable gas cylinder 5 is retracted, and during retracting, the piston of increased stroke-adjustable gas cylinder 5 triggers second stroke switch X2,
The coil of third intermediate relay KA3 is set to be powered, the normally opened contact closure of third intermediate relay KA3, with double end solenoid valve
Second coil M3 be powered, front opening gas source valve close, close when can open another gas source valve, no bar gas
Cylinder 4 drives slide unit 2 to exit below upper mold 1, and rodless cylinder 4 can trigger third trip switch X3 while retracting in place, make
The coil of 4th intermediate relay KA4 is powered, and the normally-closed contact of the 4th intermediate relay KA4 disconnects, and leads to the first intermediate relay
The coil blackout of device KA1 further disconnects the closed end of the first intermediate relay KA1, later entire control system power-off,
Current operating process finishes.Subsequent operation again press two and start switch SB1 by both hands.
According to another aspect of the present invention, a kind of pressing machine working method is also disclosed, is included the following steps:
S1: charging, power switch SB are closed, and the fixed fixture that product to be laminated is housed on slide unit 2, two start switch
After SB1 is closed at, the coil of the first intermediate relay KA1 is powered, and closes the normally opened contact of the first intermediate relay KA1
It closes, and then the first coil M1 of double end solenoid valve is made to be powered, gas source valve is opened, and makes rodless cylinder 4 that slide unit 2 is sent to upper mold 1
Lower section；
S2: pressing, rodless cylinder 4 trigger first stroke switch X1, make the second intermediate relay KA2 coil and the time after
The coil of electric appliance KT is powered simultaneously, and time relay KT starts timing, and the normally opened contact closure of the second intermediate relay KA2 is single
The coil M2 of head solenoid valve is powered, and gas source valve is opened, and makes increased stroke-adjustable gas cylinder 5 that upper mold 1 be driven to move down, upper mold 1 is in place
The time of setting is kept later；
S3: die sinking, setting time in place when, the normally-closed contact of time relay KT disconnects, the line of single head solenoid valve
Enclose M2 power-off, the gas source valve of front opening close, closing when, opens another gas source valve, increased stroke-adjustable gas cylinder 5
Piston is retracted；
S4: discharging triggers second stroke switch X2 during the piston of increased stroke-adjustable gas cylinder 5 is retracted, makes in third
Between the coil of relay KA3 be powered, the normally opened contact of third intermediate relay KA3 closure makes the second coil of double end solenoid valve
M3 is powered, the gas source valve of front opening close, another gas source valve can be opened when closing, rodless cylinder 4 drives
Slide unit 2 is retracted, and third trip switch X3 can be triggered while retracting in place, and the coil of the 4th intermediate relay KA4 is made to be powered,
The normally-closed contact of 4th intermediate relay KA4 disconnects, and the coil blackout of the first intermediate relay KA1 makes the first intermediate relay
The closed end of KA1 disconnects.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.
Claims (10)
1. a kind of pressing machine, which is characterized in that including liftable upper mold (1) and the slide unit (2) below upper mold (1) can be passed in and out,
The basal sliding of the slide unit (2) is connected with guide rail (3), and the slide unit (2) is mounted on rodless cylinder (4), makes rodless cylinder
(4) slide unit (2) can be driven to move along a straight line along guide rail (3), the output end of the upper mold (1) and increased stroke-adjustable gas cylinder (5)
Connection, the rodless cylinder (4) connect double end solenoid valve, and the increased stroke-adjustable gas cylinder (5) connects single head solenoid valve.
2. pressing machine according to claim 1, which is characterized in that the station of the pressing machine is equipped with a power switch
SB and two concatenated to start switch SB1, and the power switch SB is self-lock switch, and the SB1 that starts switch opens for Self-resetting
It closes.
3. pressing machine according to claim 1, which is characterized in that distinguish at the both ends of rodless cylinder (4) movement travel
Equipped with first stroke switch X1 and third trip switch X3.
4. pressing machine according to claim 1, which is characterized in that the outer wall of the increased stroke-adjustable gas cylinder (5) is equipped with second
Travel switch X2.
5. pressing machine according to claim 1, which is characterized in that there are four station, each station tools for the pressing machine tool
There is a power switch SB and two concatenated start switch SB1.
6. pressing machine according to claim 1, which is characterized in that the pressing machine includes workbench (6), the no bar gas
Cylinder (4), first stroke switch X1 and third trip switch X3 are mounted on the bottom surface of the workbench (6), on the workbench (6)
Equipped with elongated slot (7), the side of the rodless cylinder (4) is equipped with connecting rod (8), and one end of the connecting rod (8) passes through the length
The bottom surface of the slide unit (2) is secured to after slot (7).
7. pressing machine according to claim 1, which is characterized in that the end of slide unit (2) movement travel is equipped with buffering
Valve (9).
8. a kind of pressing machine control circuit, which is characterized in that including power switch SB, two start switch SB1, among first after
Electric appliance KA1, the second intermediate relay KA2, third intermediate relay KA3, the 4th intermediate relay KA4, first stroke switch X1,
Second stroke switch X2, third trip switch X3, time relay KT, the first coil M1 of double end solenoid valve, double end solenoid valve
The second coil M3 and single head solenoid valve coil M2.
9. a kind of pressing machine according to claim 8, which is characterized in that power switch SB is self-lock switch, is started switch
SB1 is self-resetting switch, power switch SB, start switch SB1, the normally-closed contact of the 4th intermediate relay KA4, among first after
Both ends of power is linked into after the coil series connection of electric appliance KA1, the normally opened contact of the first intermediate relay KA1 and starts switch SB1 simultaneously
Connection, normally-closed contact with the 4th intermediate relay KA4 after the normally-closed contact of third intermediate relay KA3 is connected with first coil M1
With the coils from parallel connection of coils of the first intermediate relay KA1, first stroke switch X1 connect with the coil of the second intermediate relay KA2 after with
The coils from parallel connection of coils of the normally-closed contact of 4th intermediate relay KA4 and the first intermediate relay KA1, the second intermediate relay KA2's
Normally opened contact is in parallel with first stroke switch X1, the coils from parallel connection of coils of the coil of time relay KT and the second intermediate relay KA2,
Coils from parallel connection of coils with time relay KT after the normally-closed contact of time relay KT is connected with coil M2, second stroke switch X2 with
Coils from parallel connection of coils after the coil series connection of third intermediate relay KA3 with time relay KT, third intermediate relay KA3's is normally opened
Contact is in parallel with second stroke switch X2, the coils from parallel connection of coils of the second coil M3 and third intermediate relay KA3, third trip switch
Coils from parallel connection of coils with time relay KT after X3 connects with the coil of the 4th intermediate relay KA4, the 4th intermediate relay KA4's
Normally opened contact is in parallel with third trip switch X3.
10. a kind of pressing machine working method, which comprises the following steps:
S1: charging, power switch SB are closed, and the fixed fixture that product to be laminated is housed on slide unit (2), two start switch SB1
After being closed at, the coil of the first intermediate relay KA1 is powered, and is closed the normally opened contact of the first intermediate relay KA1, into
And the first coil M1 of double end solenoid valve is made to be powered, gas source valve is opened, and makes rodless cylinder (4) that slide unit (2) is sent to upper mold (1)
Lower section；
S2: pressing, rodless cylinder (4) trigger first stroke switch X1, make the coil and time relay of the second intermediate relay KA2
The coil of device KT is powered simultaneously, and time relay KT starts timing, the normally opened contact closure of the second intermediate relay KA2, single head
The coil M2 of solenoid valve is powered, and gas source valve is opened, and makes increased stroke-adjustable gas cylinder (5) that upper mold (1) to be driven to move down, upper mold (1)
The time of setting is kept after in place；
S3: die sinking, setting time in place when, the normally-closed contact of time relay KT disconnects, the coil M2 of single head solenoid valve
Power-off, the gas source valve of front opening close, closing when, opens another gas source valve, the work of increased stroke-adjustable gas cylinder (5)
Plug is retracted；
S4: discharging triggers second stroke switch X2 during the piston of increased stroke-adjustable gas cylinder (5) is retracted, makes among third
The coil of relay KA3 is powered, and the normally opened contact closure of third intermediate relay KA3 makes the second coil M3 of double end solenoid valve
Be powered, the gas source valve of front opening close, another gas source valve can be opened when closing, rodless cylinder (4) drives
Slide unit (2) is retracted, and third trip switch X3 can be triggered while retracting in place, keeps the coil of the 4th intermediate relay KA4 logical
The normally-closed contact of electricity, the 4th intermediate relay KA4 disconnects, and the coil blackout of the first intermediate relay KA1 makes the first intermediate relay
The closed end of device KA1 disconnects.
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| CN201910462139.0A CN110239129A (en) | 2019-05-30 | 2019-05-30 | A kind of pressing machine, control circuit and working method |
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| CN201910462139.0A CN110239129A (en) | 2019-05-30 | 2019-05-30 | A kind of pressing machine, control circuit and working method |
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| CN206765409U (en) * | 2017-04-07 | 2017-12-19 | 东莞市晴达电子有限公司 | A kind of general punch press of security protection connector |
| CN108705130A (en) * | 2018-05-17 | 2018-10-26 | 江苏国力锻压机床有限公司 | The method of high-precision plate shearing machine and its accurate shearing board material |
| CN211567004U (en) * | 2019-05-30 | 2020-09-25 | 东莞盛翔精密金属有限公司 | Pressfitting machine and control circuit |
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