KR20030076746A - System for actuating press mould lifter - Google Patents

Abstract

PURPOSE: A system for actuating press mould lifter is provided to prevent defects of panel manufactured by accurately controlling actuation timing and speed of respective cylinders. CONSTITUTION: In an actuating system for press mould lifter installed on a forming machine for manufacturing automobile body panels and equipped with air cylinders(70) for ascending and descending the body panel, the system for actuating press mould lifter comprises an air terminal block(10) comprising air supply part(12) for supplying air, and first air entrance and exit part(14) and second air entrance and exit part(16) for controlling entrance and exit of air; a direction control valve(20) comprising silencer(28) connected to the air supply part(12) and each of the air entrance and exit parts of the air terminal block to block noise generated during operation, and first entrance and exit port(30) and second entrance and exit port(32) for exhausting a supply direction controlled air; pressure control valves(40) connected to the direction control valve(20) to control pressure of air supplied to the air cylinders(70); rapid air exhaust valves(50) connected to the lower part of the cylinders to increase exhaust rate of air from the air cylinders; a speed controller(52) for controlling air exhaust rate of the rapid air exhaust valves(50); other rapid air exhaust valves(60) connected to the direction control valve(20) and the upper part of the cylinders to increase exhaust rate of air from the upper part of the cylinders; and a speed controller(66) for controlling air exhaust rate of the other rapid air exhaust valves(60).

Description

System for actuating press mold lifter

The present invention relates to a mold lifter operating system, and more particularly, to a mold lifter operating system capable of precisely controlling the operation timing and operating speed of each air cylinder so that each air cylinder supporting the mold can be effectively used. It is about.

In general, every vehicle has a vehicle body that forms the exterior of the vehicle, and these vehicles mainly consist of various frames and panels. In addition, the panels constituting the vehicle body are not only formed in various shapes but also manufactured in various ways. One of the manufacturing methods of such a panel is a press working method. That is, the method of pressing down a raw material with respect to a metal mold | die, and forming the predetermined panel corresponding to the metal mold | die is widely used. Of course, in the pressing machine which performs such a pressing process, punching processing, drawing processing, shaping | molding, cutting operation, etc. can be further performed. On the other hand, the pressing machine is provided with, for example, a lifter operating system for separating the press-formed body panel from the mold.

This press mold lifter operating system, as shown in Figure 1, the air supplied from the air pump lift chamber (21, 21 ') or down chamber (23, 23) of the two cylinder (2, 2') Direction control valve (9) for selectively supplying to '), and a pressure control valve for regulating the pressure of air which is branched into two cylinders through the direction control valve and supplied to the lift chambers (21, 21') ( 5, 5 '), flow regulating valves 4, 4' for adjusting the amount of air supplied through the pressure regulating valves 5, 5 ', and the lift chambers 21, 21'. Rapid exhaust valve 7 which discharges residual air from the down chambers 23 and 23 'and supplies branched air to the down chamber through the directional control valve 9 and to the two cylinders 2 and 2' when supplied. 7 ') and check valves 6 and 6' which supply residual air in the lift chambers 21 and 21 'when air is supplied to the down chambers 23 and 23'.

However, this conventional press mold lifter operating system has been shown to have some problems. First, there is a problem that the operation timing is mismatched during the initial two to three times of operation of the cylinder. In other words, the speed of each cylinder should control the air exhaust speed of all the pipelines, but the direction control valve does not fill enough of the air in all the pipelines during the initial operation, causing inconsistency in the initial operation of each cylinder. As a result, there is a problem that causes a failure of the panel to be manufactured.

In addition, such an operating system has a collision of air at the air supply to the direction control valve when exhausting the air of each cylinder when the cylinder is lifted up or down, and thus the down speed of the cylinder is lowered. Due to the simultaneous operation of the cylinders of the same, there is also a problem that causes the failure of the final panel product.

In addition, there is a problem in that it is not possible to install more than three cylinders for the above reasons, so that the panel cannot be reliably lifted up or down.

On the other hand, as one proposal for solving such a problem, in order to increase the lifting point in order to maximize the area in contact with the panel in the press die, while at the same time to obtain the operation timing and uniform speed for each lifting point Racks and pinions are used.

However, the operation system with the rack and pinion added in this way has been shown to cause the following problems. First, there is a problem that the production speed of the press is lowered because the operating speed is slow.

In addition, when the number of times of operation is large, there is a problem that a malfunction occurs due to the wear of the pinion.

In addition, when the inflow of fine foreign matter between the rack and the pinion occurs, there is a problem that is difficult to maintain, difficult to maintain, alignment of the lifting point of the mold during disassembly and assembly, the manufacturing cost is increased.

Therefore, the present invention has been invented to solve the above problems, and an object of the present invention is to provide a mold lifter operating system that can prevent the failure of the panel manufactured by accurately controlling the operation timing and speed of each cylinder. .

Another object of the present invention is to control the exhaust speed of the air of each cylinder freely, and to exhaust the air exhaust from the lower end of each cylinder when the cylinder down can improve the down speed and obtain a constant speed mold To provide a lifter operating system.

Another object of the present invention is to provide a mold lifter operating system that can be used by installing a plurality of cylinders.

It is still another object of the present invention to provide a mold lifter operating system having low manufacturing cost, simple disassembly and maintenance, and improved productivity.

1 is a block diagram showing a conventional mold lifter operating system.

2 is a block diagram of an operating system for a mold lifter according to the present invention.

3 is a pneumatic circuit diagram of FIG.

4 is a partial configuration diagram showing the arrangement of the air cylinder of the operating system for the lifter of FIG.

5 is a use state showing an application state of the air cylinder of FIG.

♣ Explanation of symbols for the main parts of the drawing ♣

10: Air terminal block 20: Directional control valve

40: air pressure regulating valve 50,60: rapid exhaust valve

52,66: speed controller 70: air cylinder

Such objects are provided in a pressing machine for forming a panel of a vehicle body of a vehicle and having an air cylinder for raising and lowering the body panel, wherein the air for supplying air to the cylinder is provided. An air terminal block having a supply part, a first air access part and a second air access part for controlling the access of air; It is connected to the air supply unit and each air access unit of the air terminal block, and provided with a silencer to block the noise generated during operation, the first entry port and the second entry port for discharging the air controlled supply direction Directional control valve having; A pressure regulating valve connected to the directional control valve for regulating the pressure of air supplied to the air cylinder; One rapid exhaust valve connected to the lower end of the cylinder for increasing the exhaust velocity of air from the air cylinder; A speed controller for controlling the air exhaust speed of the rapid exhaust valve; Another rapid exhaust valve connected to the directional control valve and connected to the top of the air cylinder, for increasing the exhaust velocity from the top of the air cylinder; And a speed controller for controlling the exhaust speed of the other quick exhaust valve.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, referring to FIGS. 2 and 3, the operating system for a mold lifter according to the present invention includes an air terminal block 10 for supplying or discharging air or pneumatic pressure to the operating system. The air terminal block 10 includes at least one air supply unit 12 at least in the center, and includes a first air access unit 14 and a second air access unit 16 at both sides thereof. The air supply unit 12 and each of the air inlets and outlets 14 and 16 actually pass air couplers 12a and 14a and 16a connected to the air supply means by hoses or pipes, and the air flowing from the air coupler. Or a coupling 12b; 14b; 16b for storing or storing the same, and a union 12c; 14c; 16c in communication with each connecting rod and connected to a directional control valve to be described later. Of course, each of the air supply unit described above may also serve to discharge air to the air supply means.

Direction control valves 20 are connected to the air supply unit 12 and the air inlet and outlet parts 14 and 16 of the air terminal block 10 by an air hose 18. The directional control valve 20 is connected to each air inlet, that is, the air supply 12, which is actually connected to the respective air supply 12 and the air inlet 14, 16 by the respective air hose 18. A first inlet 22 to be connected, a second inlet 24 to be connected to the first air outlet 14, and a third inlet 26 to be connected to the second air outlet 16 are provided. . The directional control valve 20 is provided with a silencer 28 for removing noise that may be generated during its operation. In addition, the direction control valve 20 is provided with a first inlet port 30 and a second inlet port 32 for communicating or discharging the air whose direction to be supplied therefrom is controlled.

The direction control valve 20 is provided with a pressure control valve 40 for regulating the pressure of the air supplied therefrom. The pressure regulating valve 40 is connected to the first discharge port 30 of the direction control valve 20 by the air hose 42 and the hose joint 44, and controls the pressure of the air supplied from the discharge port. Play a role.

In addition, the pressure control valve 40 is connected to the rapid exhaust valve 50 through the double nipple (46). This rapid exhaust valve 50 serves to quickly exhaust the air discharged from each cylinder to be described later. On the other hand, the rapid exhaust valve 50 is preferably provided with a speed controller 52 to control the exhaust speed there. In addition, the quick exhaust valve 50 is provided with a union 54 for introducing air discharged from the cylinder to be described later.

On the other hand, the other fast exhaust valve 60 is connected to the direction control valve 20. The rapid exhaust valve 60 is connected to the first inlet port 32 of the direction control valve 20 by the air hose 62 and the hose joint 64, and the exhaust velocity of the air discharged from the cylinder to be described later. It acts to increase. Of course, the speed exhaust valve 60 is preferably provided with a speed controller 66 to control the exhaust speed there. In addition, the quick exhaust valve 60 is provided with a union 68 for introducing air discharged from the cylinder to be described later.

On the other hand, each of the rapid exhaust valve (50, 60) is connected to the air cylinder 70 for lifting the actually molded panel. Of course, the piston 72 is installed in the air cylinder 70 so as to reciprocate. In addition, one side of the air cylinder 70 is provided with a first union 74 which is connected to the union 54 of the quick exhaust valve 50 and communicates with the inside of the cylinder, while the other side of the air cylinder 70 A second union 76 is provided which is connected to the union 68 of the exhaust valve 60 and communicates with the inside of the cylinder.

Optionally, the directional control valve 20 may be a pressure control valve 40, each of the rapid exhaust valves (50, 60) and the air cylinder 70 is formed in a continuous interconnected manner in the manner described above. Of course, the number of components connected in this way may be arbitrarily set according to the size or weight of the mold or panel to be manufactured. In this embodiment, although shown as having three air cylinders, depending on the conditions as described above, as well as two, as shown in Figure 5 may be used by installing four or more cylinders.

Hereinafter, the operation of the mold lifter operating system configured as described above and the operation mode thereof will be described in detail.

First, as shown in FIG. 4, an air cylinder 70 is installed at various positions in order to lift a panel formed in a press machine at an appropriate position of a molding machine such as a press machine. Of course, each of these air cylinders 70, as described above, the air supply device 10, the directional control valve 20, the pressure control valve 40, the rapid exhaust valve 50, which constitutes the mold lifter operating system 60) continuously and operatively connected.

According to the operation of the mold lifter operating system configured as described above, air is first filled in the entire path from the air supply device 10 to each cylinder 70 before the operation of each cylinder 70 starts. As shown in FIG. 4, the air is supplied to the direction control valve 20 through the air supply unit 12 of the air terminal block 10 so that the supply direction of the air is controlled by the first discharge port 30. ), Air hose 42, hose joint 44, double nipple 46, pressure regulating valve 40, quick exhaust valve 50, the inner lower portion of the cylinder 70 through the union 74 formed in the cylinder The upper part of each cylinder 70 through the second discharge port 32, the air hose 62, the hose joint 64, the quick exhaust valve 60, the union 76 formed in the cylinder Is run in a manner that is supplied by Of course, in this case, each of the rapid exhaust valve (50, 60) is to be filled with air in the maximum open state.

Then, each pressure control valve 40 connected to each cylinder 70 is preferably maintained by adjusting the pressure of the air to a certain range. In this embodiment, the pressure of the gauge of the pressure regulating valve 40 is set to 3.5 to 4.0 kfg / cm 2 to be adjusted to this pressure. Of course, as the pressure of each pressure control valve is regulated in this way, the pressure of the lower part of each cylinder is also maintained in a constant range.

In this way, the air is supplied using the first air inlet and outlet of the air terminal block 10 and the second air inlet and outlet unit 16 while the set pressure of the pressure regulating valve 40 is kept constant. And evacuation is repeated to completely fill the path described above with air.

In addition, the rising and falling speeds of the pistons 72 of the respective cylinders 70 and the respective timings can be precisely controlled. In more detail, the descending speed and timing of the piston 72 of each cylinder 70 can be accurately controlled by the speed controller 52 connected to the lower side of the cylinder 70. In addition, the ascending speed and timing of the piston 72 of each cylinder 70 can be precisely controlled by the speed controller 66 connected above the cylinder 70. As a result, by such adjustment or control, the operating speed and timing of the cylinder 70, that is, the rising and falling speed and timing of the piston 72 can be kept constant.

The initial adjustment of the operating speed and the operating timing of each cylinder 70 of the operating system as described above can be provided with a complete operating ready state with only one initial setting.

Of course, in the state where the initial setting of the operating system is completed in this way, since the air is filled in the entire path from the air terminal block 10 to the respective cylinder 70 before the start of the operation of each cylinder 70, The precise supply and exhaust of air to the cylinder can be achieved, allowing the molded panel to be reliably lifted from the press machine. In particular, during the lowering operation of the piston 72 of each cylinder 70, since the air can be quickly exhausted by the quick exhaust valve 50 connected to the lower portion of each cylinder 70, the lowering speed of the piston 72 Is improved, of course, to maintain a constant speed at all times.

Accordingly, the panel P manufactured in the press machine is stably and accurately supported by the end of the piston 72 at a predetermined point P 'to be lifted or lowered, thereby preventing a defect in quality. Of course, each cylinder 70 is not only individually controlled, but also the number can be set arbitrarily to make the panel more stable and accurate.

As a result, according to the mold lifter operating system according to the present invention, it is possible to easily and accurately control the operation timing and speed of each cylinder to prevent the failure of the panel produced, and to control the exhaust air speed of each cylinder freely. It is possible to improve the down speed by exhausting the air exhaust from the lower end of each cylinder when the cylinder is down, it is possible to obtain a constant speed has the effect of improving the reliability and productability.

In addition, a number of cylinders can be installed and used, manufacturing cost is low, disassembly and maintenance is simple, and there is an advantage that the productivity is improved.

While a preferred embodiment according to the present invention has been described above, it will be understood by those skilled in the art that various modifications and changes can be made without departing from the scope of the appended claims.

Claims (4)

In the molding machine for manufacturing a panel of the vehicle body of the vehicle, the operating system for a mold lifter having an air cylinder for raising and lowering the body panel, An air terminal block including an air supply part for supplying air, a first air access part, and a second air access part for controlling access of air; It is connected to the air supply unit and each air access unit of the air terminal block, and provided with a silencer for blocking the noise generated during operation, the first access port and the second access port for discharging the air controlled the supply direction Directional control valve having; A pressure control valve connected to the direction control valve and configured to adjust a pressure of air supplied to the air cylinder; A quick exhaust valve connected to the lower end of the cylinder to increase the exhaust speed of air from the air cylinder; A speed controller for controlling an air exhaust speed of the one quick exhaust valve; Another rapid exhaust valve connected to the directional control valve and connected to an upper end of the cylinder, for increasing the exhaust velocity from the upper portion of the cylinder; And And a speed controller for controlling the exhaust speed of the other rapid exhaust valve. According to claim 1, wherein the air supply and each air inlet and air coupler is connected to the supply means, a connecting rod for passing or storing the air flowing from the air coupler, and in communication with each connecting rod and direction control Operating system for a mold lifter, characterized in that consisting of a union connected to the valve. The operating system for a mold lifter according to claim 1, wherein the pressure regulating valve and the quick exhaust valve are connected by a double nipple. The operating system for a mold lifter according to claim 1, wherein the directional control valve is provided with a pressure regulating valve, each of the rapid exhaust valves, and an air cylinder.