CN109571863B

CN109571863B - Quick die change system

Info

Publication number: CN109571863B
Application number: CN201811486459.1A
Authority: CN
Inventors: 余炳波; 冯德祺; 刘长海; 李德满; 钟进棋
Original assignee: Huamao Machinery (zhaoqing) Co Ltd
Current assignee: Guangdong Huamao Precision Manufacturing Co.,Ltd.
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2020-01-17
Anticipated expiration: 2038-12-06
Also published as: CN109571863A

Abstract

The invention provides a quick die change system, which specifically comprises: the pneumatic booster power unit comprises an oil tank, a gas-liquid booster pump, a gas pressure regulating valve, a pilot electromagnetic valve, a reversing AC valve and a pressure relay, the hydraulic clamp unit comprises a movable template, a fixed template, a cylinder installed on the template, a clamp, a magnetic switch, a position sensor and a 2-position 5-way reversing valve which are electrically connected, and the electric control unit comprises a controller which is respectively electrically connected with the gas pressure regulating valve, the pilot electromagnetic valve, the reversing AC valve, the pressure relay and the magnetic switch, the position sensor and the 2-position 5-way reversing valve in the pneumatic booster power unit. The rapid die change system is high in automation degree, low in working strength and high in safety coefficient, the traditional die change time can be reduced to 2-3 minutes from 30-60 minutes each time, and the die change efficiency is improved by more than 90%.

Description

Quick die change system

Technical Field

The invention relates to the technical field of clamp control, in particular to a quick die change system for dies of punching machines, injection molding machines, die casting machines and the like.

Background

With the progress of society and the development of artificial intelligence, in modern production activities, the labor cost is continuously increased, the production efficiency is continuously improved, the frequency of die replacement is higher and higher, the die replacement time is long in the traditional die replacement mode, the labor intensity is high, the efficiency is low, and the control of the cost and the shelf life is not facilitated. Especially in the application of the fields of punching machine, injection molding, die casting machine, etc., the interval time of die replacement will be shorter and shorter, the frequency of die replacement and maintenance will be higher and higher, the down time of the corresponding punching machine, injection molding, die casting machine will be greatly increased, the production efficiency and the machine utilization rate are seriously influenced, the delivery cycle is prolonged, the large investment can not be effectively returned, the die replacement equipment in the prior art is large and heavy, the die switching action is single, the efficiency is low, the die replacement stop control is difficult, misoperation is easy to generate, the program action is incorrect, the product quality is influenced or the product is scrapped, a large amount of time is needed to correct the die position during die replacement, the time is wasted, the production efficiency is reduced, according to statistics, the average time of die replacement of the current large-scale injection molding machine is 30-60 minutes each time, and the manual die replacement error is large, and due to the addition of system correction after mold changing, the average mold changing time is longer, and the requirements of modern production are more and more difficult to meet.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a rapid die change system which is high in automation degree, short in die change time and high in safety coefficient.

In order to implement the above technical solution, the present invention provides a rapid die change system, which specifically includes:

the pneumatic supercharging power unit comprises a gas-liquid booster pump arranged on an oil tank, a gas pressure regulating valve is arranged on the gas-liquid booster pump, a gas inlet of the gas pressure regulating valve is connected with a gas source, the bottom of the gas-liquid booster pump is connected with the oil tank through an oil inlet pipe, an oil absorption filter is arranged on the oil inlet pipe, an outlet of the gas-liquid booster pump is connected with an oil outlet pipe, a pressure gauge is arranged at the oil outlet pipe, an oil return pipe is further arranged on the oil outlet pipe, a pilot electromagnetic valve is arranged at the butt joint of the oil outlet pipe and the oil return pipe, reversing AC valves are arranged behind the pilot electromagnetic valves, a pressure relay and a clamp connector are arranged on the reversing AC valves;

the hydraulic fixture unit comprises a movable template and a fixed template, wherein a plurality of oppositely arranged clampers are respectively arranged on the movable template and the fixed template, a bedplate T-shaped groove is formed in a machine bed plate of the movable template and the fixed template, the clampers are arranged on the bedplate T-shaped groove, each clamper is correspondingly provided with a cylinder, a magnetic switch is arranged on each cylinder, a telescopic rod of each cylinder is connected with each clamper through a connecting block, a position sensor is arranged at the moving front end of each clamper, and an air pressure regulating valve in the pneumatic pressurization power unit is connected with each cylinder through a 2-position 5-way reversing valve;

the pneumatic pressurization power unit comprises an electric control unit, wherein the electric control unit comprises a controller, and the controller is respectively electrically connected with an air pressure regulating valve, a pilot electromagnetic valve, a reversing AC valve and a pressure relay in the pneumatic pressurization power unit, a magnetic switch and a position sensor in the hydraulic clamp unit and a 2-position 5-way reversing valve.

Preferably, the clamp comprises a fixed seat movably mounted on the table plate T-shaped groove, a support is arranged at the top of the fixed seat, a clamping rod is fixed on the support through a pin shaft, a clamping head is arranged at the front end of the clamping rod, a piston rod vertically and upwards arranged is mounted below the rear end of the clamping rod, a reset spring is sleeved on the outer side of the piston rod, an oil inlet is formed in the bottom of the piston rod, and the oil inlet is connected with a clamp connector in the pneumatic pressurization power unit.

Preferably, a power knob switch SA1 connected with an external power supply is arranged on the controller, a mold changing knob switch SA2 for controlling mold changing operation is arranged on one side of the power knob switch SA1, a moving mold plate operating button switch K3 and a fixed mold plate operating button switch K4 are arranged below the mold changing knob switch SA2 side by side, a moving mold plate clamping button K5 and a moving mold plate releasing button K7 for controlling clamping and releasing operation of the moving mold plate are correspondingly arranged below the moving mold plate operating button switch K3, a fixed mold plate clamping button K6 and a fixed mold plate releasing button K8 for controlling clamping and releasing operation of the fixed mold plate are correspondingly arranged below the fixed mold plate operating button switch K4, and a reset button switch K9 is further arranged beside the moving mold plate releasing button K7.

Preferably, a power indicator lamp D1, a mold changing mode indicator lamp D2, a spot light retreating indicator lamp D9, a mold closing completion indicator lamp D10 and a mold clamping completion indicator lamp D11 are arranged in parallel from top to bottom on the left side of the movable platen operation button switch K3 on the controller, and an abnormality indicator lamp D12 is arranged at the upper left corner of the reset button switch K9.

Preferably, a moving plate operation indicator lamp T5 is arranged at the upper left corner of the moving plate operation button switch K3, and a fixed plate operation indicator lamp T6 is arranged at the upper left corner of the fixed plate operation button switch K4.

Preferably, the movable mould board clamping indicator lamp D5 is installed in the upper left corner of movable mould board clamping button K5, movable mould board loosening button K7 is installed in the upper left corner and is loosened indicator lamp D7, fixed mould board clamping indicator lamp D6 is installed in the upper left corner of fixed mould board clamping button K6, fixed mould board loosening button K8 is installed in the upper left corner and is loosened indicator lamp D8.

Preferably, a movable mold plate forward indicator lamp D13 and a movable mold plate backward indicator lamp D14 are provided below the movable mold plate release button K7, and a fixed mold plate forward indicator lamp D15 and a fixed mold plate backward indicator lamp D16 are provided below the fixed mold plate release button K8.

Preferably, an oil filling port is arranged at the top of an oil tank in the pneumatic pressurization power unit, and a liquid level meter is arranged on the surface of the oil tank.

The quick die change system provided by the invention has the beneficial effects that:

1) the rapid die change system is high in automation degree, low in working strength and high in safety factor, when the rapid die change system works, workers do not need to enter a machine tool for operation, die fixing can be realized only by operating buttons, a cross double-loop fixed die is adopted for a single-side die in a loop, a zero-leakage valve is arranged at a reversing valve position in a hydraulic loop, the die can be fixed under the conditions of power failure and gas failure of the system, the size of clamping force is detected at any time, and an alarm is given to stop the machine when the clamping force is insufficient;

2) the rapid die change system can greatly shorten the time occupied by the die change process, reduce the traditional die change time from 30-60 minutes to 2-3 minutes each time, improve the die change efficiency by more than 90 percent, and greatly reduce the working strength of workers.

Drawings

Fig. 1 is a schematic structural diagram of a controller according to the present invention.

Fig. 2 is a schematic diagram of an external control of the controller according to the present invention.

Fig. 3 is a schematic diagram i of the control principle of the present invention.

Fig. 4 is a schematic diagram ii of the control principle of the present invention.

FIG. 5 is a side view of the pneumatic booster power unit of the present invention.

FIG. 6 is a front view of the pneumatic booster power unit of the present invention.

Fig. 7 is a schematic diagram of the control principle of the pneumatic booster power unit in the invention.

Fig. 8 is a schematic view of the clamp of the present invention.

FIG. 9 is a schematic view II of the clamper of the present invention.

Fig. 10 is a schematic view showing the control principle of the hydraulic clamp unit according to the present invention.

Fig. 11 is a schematic view of the installation of the cylinder of the machine tool platen clamp of the present invention.

Fig. 12 is a side view of the cylinder mounting of the machine tool platen clamp of the present invention.

In the figure: 101. an oil tank; 102. a liquid level meter; 103. an oil return pipe; 104. an oil inlet pipe; 105. an oil absorption filter; 106. an air inlet; 107. an air pressure regulating valve; 108. a gas-liquid booster pump; 109. a pressure gauge; 110. an oil outlet pipe; 111. a pilot solenoid valve; 112. an oil filler; 113. a clamper connection port; 114. a reversing AC valve; 115. a pressure relay; 116. an oil pressure line; 200. a clamper; 201. a fixed seat; 202. a return spring; 203. a piston rod; 204. a clamping lever; 205. a pin shaft; 206. a clamping head; 207. an oil inlet; 210. 2-position 5-way reversing valve; 212. a pipeline; 213. a cylinder; 214. a magnetic switch; 215. connecting blocks; 216. a machine platen; 217. a bedplate T-shaped groove; 218. a position sensor; 219. a mold advance stopper; 220. a mold retreating limiting block; 221. and (5) template.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of the present invention.

Example (b): a rapid die change system.

Referring to fig. 1 to 12, a rapid die change system specifically includes:

the pneumatic pressurization power unit comprises an oil tank 101, wherein an oil filling port 112 is arranged at the top of the oil tank 101, a liquid level meter 102 is arranged on the surface of the oil tank 101, the liquid level height in the oil tank 101 can be controlled in real time through the matching between the oil filling port 112 and the liquid level meter 102, a gas-liquid booster pump 108 is arranged at the top of the oil tank 101, a gas pressure regulating valve 107 is arranged on the gas-liquid booster pump 108, a gas inlet 106 of the gas pressure regulating valve 107 is connected with a gas source, the bottom of the gas-liquid booster pump 108 is connected with the oil tank 101 through an oil inlet pipe 104, an oil absorption filter 105 is arranged on the oil inlet pipe 104, an outlet of the gas-liquid booster pump 108 is connected with an oil outlet pipe 110, a pressure gauge 109 is arranged at the oil outlet pipe 110, an oil return pipe 103 is further arranged on the oil outlet pipe 110, a pilot electromagnetic valve 111 is, the clamp connection port 113 is connected to the clamp 200 through an oil pressure line 116;

the hydraulic clamp unit comprises a movable template and a fixed template, wherein a plurality of oppositely arranged clamps 200 are respectively arranged on the movable template and the fixed template, a platen T-shaped groove 217 is arranged on a machine tool platen 216 of the movable template and the fixed template, the clamps 200 are arranged on the platen T-shaped groove 217, each clamp 200 is correspondingly provided with a cylinder 213, a magnetic switch 214 is arranged on each cylinder 213, an expansion rod of each cylinder 213 is connected with the corresponding clamp 200 through a connecting block 215, the moving front end of each clamp 200 is provided with a position sensor 218, an air pressure regulating valve 107 in the pneumatic pressurization power unit is connected with the corresponding cylinder 213 through a 2-position 5-way reversing valve 210, the clamp 200 comprises a fixed seat 201 movably arranged on the platen T-shaped groove 217, the top of the fixed seat 201 is provided with a support, and the clamp rod 204 is fixed on the support through a pin shaft 205, a T-shaped clamping head 206 is arranged at the front end of the clamping rod 204, a piston rod 203 which is vertically and upwardly arranged is arranged below the rear end of the clamping rod 204, a return spring 202 is sleeved outside the piston rod 203, an oil inlet 207 is arranged at the bottom of the piston rod 203, and the oil inlet 207 is connected with a clamping device connecting port 113 of a pneumatic pressurization power unit;

an electrical control unit comprising a controller electrically connected to the air pressure regulating valve 107, the pilot solenoid valve 111, the reversing AC valve 114, the pressure relay 115 in the pneumatic booster power unit, and the magnetic switch 214, the position sensor 218 and the 2-position 5-way reversing valve 210 in the hydraulic clamp unit, respectively.

Referring to fig. 8 and 9, the working principle of the clamper 200 is: an oil inlet 2017 on the clamp 200 is connected with a clamp connecting port 113 on a pneumatic pressurization power unit through an oil pipe, the oil pressure output by the gas-liquid booster pump 108 pushes a piston rod 203 of the clamp 200 to move upwards, one end of the clamp rod 204 in contact with moves upwards, the other end of the clamp rod 204 moves downwards under the action of a pin shaft 205, and after the clamp rod is in contact with a template 221, the stroke cannot be completed during stroke design of the piston rod 203, so that a mold placed on the template 221 can be clamped under the action of the oil pressure, and the clamping force can be kept constant. When the pilot electromagnetic valve 111 on the boosting power unit is electrified, the direction of the AC valve 114 is switched, the oil returns to the oil tank 101 through the downward pressure of the piston rod 203 under the action of the elastic force of the return spring 202, and the clamping head 206 at the front end of the clamping rod 204 releases the mold.

Referring to fig. 7, fig. 7 is a schematic diagram of a control principle of the pneumatic booster power unit, and in a specific operation, the air inlet 106 of the air pressure regulating valve 107 is connected with compressed air, the air pressure regulating valve 107 provides compressed air for the gas-liquid booster pump 108, when the air pressure reaches 0.2MPa, the gas-liquid booster pump 108 is started, the air pressure for normal use is 0.4MPa, and the corresponding output oil pressure is 24 MPa; and (3) clamping process: oil enters an oil inlet pipe 104 through an oil absorption filter 105, then is pressurized to an oil outlet pipe 110 through a gas-liquid booster pump 108, enters a clamp 200 through a reversing AC valve 114 and a clamp connector 113, a piston rod 203 of the clamp 200 is pushed to move upwards, a clamping rod 204 moves downwards to contact a mould template 221 to clamp a mould, when the pressure reaches 18MPa in the process, a pressure relay 115 sends a signal to a controller, when the system pressure reaches 24MPa, the output pressure of the gas-liquid booster pump 108 is in a balanced state, the gas-liquid booster pump 108 on the surface seems to be static, actually works, the pressure can be automatically compensated when the pressure of the clamp 200 is reduced, so that the constant and sufficient clamping force of the clamp 200 is kept, the traditional screw fixation does not have the real-time detection function, the tightness state of screws cannot be known, and certain potential safety hazards exist; loosening process: the pilot electromagnetic valve 111 is electrified after being connected with a 24V electric signal of the controller, the air pressure pushes the reversing AC valve 114 to reverse, hydraulic oil of the clamp 200 returns to the oil tank 101 through the oil pressure pipeline 116, the clamp connecting port 113, the reversing AC valve 11 and the oil return pipe 103 in sequence under the action of the return spring 202, and the clamp 200 is loosened.

Referring to fig. 10 to 12, fig. 11 and 12 are schematic views of the installation of the cylinder of the machine tool platen clamping device, which only shows the installation of the cylinder of the machine tool platen clamping device on the movable die plate, and actually includes a fixed die plate, in which the cylinder of the machine tool platen clamping device is installed in the same application, but the fixed die plate is fixed during actual use, and the movable die plate can move relative to the fixed die plate. Fig. 10 is a schematic diagram of the control principle of the hydraulic clamping unit, in particular, when the output pressure of the air pressure regulating valve 107 is adjusted to 0.45MPa, when a 24V electric signal of the controller is sent to the electromagnetic coils SOL1 and SOL3, the 2-position 5-way reversing valve 210 switches directions, the air pressure enters the cavity a of the air cylinders 213, all the air cylinders 213 move backwards, the piston rods of the air cylinders 213 are connected with the clamping device 200, and the clamping device 200 is driven to move backwards to be separated from the clamping part of the mold; similarly, when a 24V electric signal of the controller is sent to the electromagnetic coils SOL2 and SOL4, the 2-position 5-way reversing valve 210 is switched to the other direction, air pressure enters a cavity B of the air cylinder 213, all the air cylinders 213 move forwards, a piston rod of the air cylinder 213 is connected with the clamp 200 to drive the clamp 200 to move forwards to be close to the clamping part of the mold template 221, a position sensor 218 on the clamp 200 sends a signal to the controller after the clamp is in place, clamping can be carried out after all the clamp 200 move forwards, the controller disconnects the voltage of a pilot electromagnetic valve 111 coil on the pneumatic pressurization power unit, the air-liquid booster pump 108 starts to output oil pressure to enter a containing cavity of a piston of the clamp 200, and the piston rod 203 is pushed to jack up the clamping rod 204 to; after the mold is clamped, the mold can enter a production stage, the clamp 200 can always keep a constant clamping force to clamp the mold in production, the pressure relay 115 can monitor the pressure of the clamp 200 in real time and feed the pressure back to the controller, and the controller feeds the pressure back to the machine tool to ensure the use safety; and the front and rear ends of the mold platen 221 are respectively provided with a mold advance stopper 219 and a mold retreat stopper 220, which can limit the maximum displacement of the clamper 200 when moving forward or retreating backward.

Referring to fig. 1 and 2, a controller in the electric control unit is respectively connected with a hydraulic clamp unit, a pneumatic boosting power unit and an external injection molding machine, wherein the controller is provided with a power knob switch SA1 connected with an external power supply, one side of the power knob switch SA1 is provided with a mold changing knob switch SA2 for controlling mold changing operation, a moving mold plate operating button switch K3 and a fixed mold plate operating button switch K4 are arranged below the mold changing knob switch SA2 side by side, a moving mold plate operating indicator lamp T5 is arranged at the upper left corner of the moving mold plate operating button switch K3, a fixed mold plate operating indicator lamp T6 is arranged at the upper left corner of the fixed mold plate operating button switch K4, a moving mold plate clamping button K5 and a moving mold plate releasing button K7 for controlling clamping and releasing operation of a moving mold plate are correspondingly arranged below the moving mold plate operating button K3, a moving mold plate clamping indicator lamp D5 is arranged at the upper left corner of the moving mold plate clamping button K5, a movable template loosening indicator lamp D7 is mounted at the upper left corner of the movable template loosening button K7, a fixed template clamping indicator lamp D6 is mounted at the upper left corner of the fixed template clamping button K6, a fixed template loosening indicator lamp D8 is mounted at the upper left corner of the fixed template loosening button K8, a fixed template clamping button K6 and a fixed template loosening button K8 for controlling the fixed template clamping and loosening operations are correspondingly arranged below the fixed template operation button switch K4, and a reset button switch K9 is further mounted beside the movable template loosening button K7; a power indicator lamp D1, a mold changing mode indicator lamp D2, a shooting seat retreating indicator lamp D9, a mold closing completion indicator lamp D10 and a mold clamping completion indicator lamp D11 are arranged in parallel on the left side of a movable template operation button switch K3 on the controller, and an abnormal indicator lamp D12 is arranged at the upper left corner of a reset button switch K9; a moving template forward indicator lamp D13 and a moving template backward indicator lamp D14 are arranged below the moving template release button K7, and a fixed template forward indicator lamp D15 and a fixed template backward indicator lamp D16 are arranged below the fixed template release button K8.

Referring to fig. 3 and 4, during normal production, the power switch SA1 is always ON, and when production is completed and mold change is ready; and (3) a mould unloading process: firstly closing and locking a mold of a machine tool, then turning ON a mold closing completion indicator lamp D10 (ensuring the safety of a clamp when the mold is loosened), switching ON a mold changing knob switch SA2, pressing a movable mold plate loosening button K7 and a fixed mold plate loosening button K8 ON the corresponding side, automatically loosening hydraulic clamp coils Y1, Y2, Y3 and Y8 after being electrified, turning off a movable mold plate clamping indicator lamp D5 and a fixed mold plate clamping indicator lamp D6, electrifying coils Y6 and Y8, automatically retreating a hydraulic clamp, turning ON the movable mold plate retreating indicator lamp D14 and a fixed mold plate retreating indicator lamp D16 (if the movable mold plate is not retreated in place, the machine tool is not allowed to operate and open the mold, the safety interlocking (Y0) can be completed within a few seconds in the whole process without any auxiliary tool and entering the interior of the machine tool for operation, and the mold opening is required conventionally), and hanging out the mold; and (3) die filling process: the mold is ready to be hung in a machine tool, the mold is closed and locked after the position of the mold is adjusted, a movable mold plate clamping button K5 and a fixed mold plate clamping button K6 of an operation panel are pressed, coils Y6 and Y8 are electrified, a hydraulic clamp automatically advances to the mold plate position of the mold under the pushing of an air cylinder 213 and detects whether the advancing positions are in place or not, a movable mold plate advancing indicator lamp D13 and a fixed mold plate advancing indicator lamp D15 can display whether the mold advances in place, the clamp automatically clamps the mold after the detection (at the moment, the coils Y1, Y2, Y3 and Y8 are powered OFF), the clamping process only needs about 30 seconds, much time is saved compared with the traditional screw locking mold, the movable mold plate clamping indicator lamp D5 and the fixed mold plate clamping indicator lamp D6 on the corresponding sides are turned on when the clamping force reaches a set value, the mold changing knob switch SA2 is switched to an OFF state, the system enters a normal production running state, and if the clamping force is lower than the set value in production, the system automatically supplements, when the pressure is reduced to a certain pressure, the pressure is insufficient, the system can send out an alarm signal to stop the machine tool, and after the fault is processed, the reset button is pressed to remove the fault and alarm.

The rapid die change system is high in automation degree, low in working strength and high in safety factor, when the rapid die change system works, workers do not need to enter a machine tool for operation, die fixing can be realized only by operating buttons, a cross double-loop fixed die is adopted for a single-side die in a loop, a zero-leakage valve is arranged at a reversing valve position in a hydraulic loop, the die can be fixed under the conditions of power failure and gas failure of the system, the size of clamping force is detected at any time, and an alarm is given to stop the machine when the clamping force is insufficient; the rapid die change system can greatly shorten the time occupied by the die change process, reduce the traditional die change time from 30-60 minutes to 2-3 minutes each time, improve the die change efficiency by more than 90 percent, and greatly reduce the working intensity of workers.

The above description is only for the preferred embodiment of the present invention, but the present invention should not be limited to the embodiment and the disclosure of the drawings, and therefore, all equivalent or modifications that do not depart from the spirit of the present invention are intended to fall within the scope of the present invention.

Claims

1. A rapid die change system, comprising:

the pneumatic supercharging power unit comprises a gas-liquid booster pump arranged on an oil tank, a gas pressure regulating valve is arranged on the gas-liquid booster pump, a gas inlet of the gas pressure regulating valve is connected with a gas source, the bottom of the gas-liquid booster pump is connected with the oil tank through an oil inlet pipe, an oil absorption filter is arranged on the oil inlet pipe, an outlet of the gas-liquid booster pump is connected with an oil outlet pipe, a pressure gauge is arranged at the oil outlet pipe, an oil return pipe is further arranged on the oil outlet pipe, a pilot electromagnetic valve is arranged at the butt joint of the oil outlet pipe and the oil return pipe, reversing AC valves are arranged behind the pilot electromagnetic valves, a pressure relay and a clamp connector are arranged on the reversing AC valves, the clamp connector is connected with a clamp through an oil pressure pipeline, the clamp comprises a fixed seat movably arranged on a T-, the front end of the clamping rod is provided with a clamping head, a piston rod which is vertically and upwards arranged is arranged below the rear end of the clamping rod, the outer side of the piston rod is sleeved with a return spring, the bottom of the piston rod is provided with an oil inlet, and the oil inlet is connected with a clamping device connector in a pneumatic pressurizing power unit;

the electric control unit comprises a controller, the controller is respectively and electrically connected with an air pressure regulating valve, a pilot electromagnetic valve, a reversing AC valve, a pressure relay, a magnetic switch, a position sensor and a 2-position 5-way reversing valve in a hydraulic clamp unit in the pneumatic pressurization power unit, a power knob switch SA1 communicated with an external power supply is arranged on the controller, a mold changing knob switch SA2 for controlling mold changing operation is arranged on one side of the power knob switch SA1, a moving template operation button switch K3 and a fixed template operation button switch K4 are arranged below the mold changing knob switch SA2 in parallel, a moving template clamping button K5 and a moving template loosening button K7 for controlling clamping and loosening operation of a moving template are correspondingly arranged below a moving template operation button K3, a fixed template clamping button K6 and a fixed template loosening button K8 for controlling clamping and loosening operation of the fixed template are correspondingly arranged below a fixed template operation button K4, and a reset button switch K9 is also arranged beside the movable template release button K7.

2. The system for rapidly changing the mold according to claim 1, wherein a power indicator lamp D1, a mold changing mode indicator lamp D2, a spot-type retreat indicator lamp D9, a mold closing completion indicator lamp D10 and a mold clamping completion indicator lamp D11 are installed in the controller side by side above and below on the left side of a movable mold plate operation button switch K3, and an abnormal indicator lamp D12 is installed on the upper left corner of a reset button switch K9.

3. The system for quickly changing molds according to claim 2, wherein a movable mold plate operation indicator lamp T5 is provided at the upper left corner of the movable mold plate operation button switch K3, and a fixed mold plate operation indicator lamp T6 is provided at the upper left corner of the fixed mold plate operation button switch K4.

4. The system for quickly changing the mold according to claim 3, wherein a movable mold clamping indicator lamp D5 is installed at the upper left corner of the movable mold clamping button K5, a movable mold releasing indicator lamp D7 is installed at the upper left corner of the movable mold releasing button K7, a fixed mold clamping indicator lamp D6 is installed at the upper left corner of the fixed mold clamping button K6, and a fixed mold releasing indicator lamp D8 is installed at the upper left corner of the fixed mold releasing button K8.

5. The system for quickly changing the mold according to claim 4, wherein a movable mold plate forward indicator lamp D13 and a movable mold plate backward indicator lamp D14 are arranged below the movable mold plate release button K7, and a fixed mold plate forward indicator lamp D15 and a fixed mold plate backward indicator lamp D16 are arranged below the fixed mold plate release button K8.

6. The rapid die change system according to claim 1, wherein an oil filling port is arranged on the top of an oil tank in the pneumatic pressurization power unit, and a liquid level meter is arranged on the surface of the oil tank.