JPH11320000A - Press device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a press device reducing its size by mounting a function of a compressed air device. SOLUTION: The device is provided with a blanked slag discharge hole 33 to discharge a blanked slag and a die holder slag discharge hole 52 in a lower die part to blank a member 42 to be blanked by descending an upper die part. In this case, a compressed air generating device is constructed so that air is compressed through a descending of the upper die part and the compressed air is supplied to the lower die part, thus, the press device can reduce its size.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch waste in a punch press process and a press apparatus having a function of discharging the punch waste.

[0002]

2. Description of the Related Art A conventional press device will be described below with reference to the drawings.

FIG. 3 is a sectional view of a conventional press device.
In the conventional press working apparatus, the upper die 1 is lowered, the punched material 3 is sandwiched and positioned between the upper die 1 and the lower die 2, and then the upper die 1 is further lowered. Then, the material 3 to be punched is punched into a desired shape by the punch 4 provided on the upper die 1 and the die 6 provided on the die plate 5 of the lower die 2. Then, the punched debris 7 causes the debris discharge port 11 on the upper part of the air ejection hole 9 to be reduced in pressure due to the ejection of the compressed air 10 through the air inflow hole 8 and the air ejection hole 9 provided in the lower mold 2. Alternatively, a vacuum state is established, suction is performed downward, and the compressed air 10 is then forcibly discharged to the lower part of the lower mold 2.

[0004]

Here, in the conventional press apparatus, a compressed air generating section for generating the compressed air 10 must be provided separately from the press apparatus. Therefore, there is a problem that the press device as a whole also becomes large.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a compact press device equipped with a function of a compressed air device.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a compressed air generating section for compressing air in accordance with a lowering operation of an upper mold section and supplying compressed air to a lower mold section. It is provided with.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
An upper mold part having at least a punch, a lower die part having a punching die for punching a member to be punched by descending the upper die part, and a waste discharging hole for discharging the punched waste. And a compressed air generating unit that compresses air in accordance with the lowering operation of the upper mold part and supplies the compressed air to the lower mold part, and has an effect of reducing the size of the press device. Things.

According to a second aspect of the present invention, there is provided a lower die portion according to the first aspect, wherein a die plate having a punching die and a punching diecass discharge hole connected to the punching die; It has a die holder waste discharge hole connected to the punched die waste discharge hole and an air discharge hole on the side surface of the die holder waste discharge hole, and has an air inflow hole connected to this air discharge hole. It has the effect of being able to discharge.

According to a third aspect of the present invention, the compressed air generating portion according to the first aspect is connected to a compressed air inflow hole connected to an air inflow hole of a lower mold portion and an air intake inflow hole on a side surface. A cylinder with a bottomed cylinder having a compressed air inflow hole, and a piston that moves with the vertical movement of the upper mold part in this cylinder, and has the effect of efficiently producing compressed air. It is.

According to a fourth aspect of the present invention, a biasing member is provided between the inner bottom surface of the cylinder and the piston according to the third aspect of the present invention, which has an effect that compressed air can be produced more efficiently. Things.

According to a fifth aspect of the present invention, there is provided the air inlet hole according to the third aspect, further comprising an air inlet check valve for restricting the flow of air taken into the cylinder in one direction. It is provided with a compressed air check valve for restricting the flow of compressed air in one direction, and has an effect of preventing clogging of punched scum.

According to a sixth aspect of the present invention, a connecting portion which operates in accordance with the up and down movement of the upper mold portion is provided between the upper mold portion and the piston. This has the effect that the device can be provided at low cost.

According to a seventh aspect of the present invention, the air inlet according to the third aspect is provided with a filter, and has an effect of removing moisture, impurities, and the like.

According to an eighth aspect of the present invention, there is provided a switch for switching in accordance with the up and down movement of the upper die according to the first aspect of the present invention, and a lower die from the compressed air generator based on a signal from the switch. The part is provided with an electromagnetic valve for controlling the supply of compressed air, and has an effect that the compressed air ejected to the waste discharge hole can be controlled to a predetermined value.

Hereinafter, a press device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of a main part of a press device according to an embodiment of the present invention. In FIG. 1, reference numeral 21 denotes a punch holder. A punch 23 fixed by a punch plate 22 is provided on the lower surface of the punch holder 21. The punch 23 is provided with a stripper 24 inserted therethrough. This stripper 24, punch holder 2
1. The upper die portion is constituted by the punch plate 22 and the punching punch 23.

A die plate 32 having a punching die 31 is provided immediately below the upper die portion at a distance from the punching punch 23. The die plate 32 is punched into a desired shape by the punching die 23 and the punching die 31. The member 41 is stamped out by press working. The die plate 32 is provided with a punching die-cass discharge hole 33 that is widened downward immediately below the punching die 31. A die holder 51 is provided on the lower surface of the die plate 32 having the punched die-cass discharge holes 33, and is connected to the punched die-cass discharge holes 33 and has a diameter equal to or larger than the width of the punched die-cass discharge holes 33. have. An air ejection hole 53 is provided on the inner side surface of the die holder waste discharge hole 52 obliquely from above to below, and has an air inflow hole 54 connected to the air ejection hole 53. Here, the die plate 32 and the die holder 51 constitute a lower mold part.

A compressed air inflow hole 61 connected to the air inflow hole 54 of the lower mold portion is provided. The compressed air inflow hole 61 is provided with a compressed air backflow prevention valve 62 to prevent backflow of the compressed air ejected toward the lower mold part. In addition, a bottomed cylinder 63 connected to the compressed air inlet 61 is provided. On the inner surface of the cylinder 63, an air inlet check valve 6 is provided in an air inlet inlet 64 between the air inlet (not shown in the figure) for taking in air.
5 to prevent backflow of air flowing toward the cylinder 63. The inner bottom surface of the cylinder 63 is provided with a biasing member 66 such as a spring that biases upward. A surface of the biasing member 66 facing the inner bottom surface of the cylinder 63 has a piston 6 having substantially the same diameter as the side surface of the cylinder 63.
7 is provided. The piston 67 presses the urging member 66 downward with the downward movement of the upper mold part, compresses the air, and blows out compressed air to the lower mold part. On this occasion,
The control of the air pressure of the compressed air and the like includes a switch unit 71 composed of a microswitch or the like which performs ON / OFF operation according to the operation below the upper mold unit.
An electromagnetic valve 72 for controlling the drive in accordance with the signal from 1 is provided between the compressed air check valve 62 of the compressed air inlet 61 and the air inlet 54 of the lower mold part. Here, the configuration of the piston 67 from the compressed air inflow hole 61, the switch unit 71, and the solenoid valve 72 constitute a compressed air generation unit.

The operation of the press machine configured as described above will be described below. FIG. 2 is a diagram illustrating the operation of the press device according to one embodiment of the present invention.

First, as shown in FIG. 1, when the upper mold portion is in the upper position, the piston 67 is pushed upward by the urging of the urging member 66 in the cylinder 63 and stopped.
At this time, the switch unit 71 is in an open (OFF) state, and does not drive the electromagnetic valve 72 to block the outflow of the compressed air in the cylinder 63 to the air inflow hole 54.

Next, with the downward movement of the upper mold part,
The lower end of the punch holder 21 and the upper end of the piston 67 abut, and the piston 67 is pushed down and moved against the urging force of the urging member 66, so that the air in the cylinder 63 and the piston 67 is pressurized and compressed air Is produced. At this time, the compressed air does not leak outside from the space surrounded by the cylinder 63 and the piston 67 by the air inlet check valve 65.

Next, as shown in FIG. 2, as the upper die portion is further lowered to punch the punched member 41 by punching press working, the switch portion 71
When the solenoid valve 72 is driven and brought into a closed (ON) state by contacting the lower mold 1, the solenoid valve 72 is driven, and the compressed air compressed to a predetermined air pressure in the cylinder 63 passes through the compressed air inflow hole 61, so that the lower mold is driven. To the air inlet 54 in the die holder 51 of the section.

Next, the compressed air supplied to the air inflow hole 54 in the die holder 51 of the lower mold part is blown out from the air blowout hole 53. The ejection of the compressed air reduces the pressure in the punched die-cass discharge holes 33 and the die holder-cass discharge holes 52,
The punched waste 42 is sucked into the die holder waste discharge hole 52,
Is discharged.

Next, after the end of the punching press working, when the upper mold portion is raised, the urging of the urging member 66 causes the piston 67 to move.
Rises and the inside of the cylinder 63 is reduced in pressure to become almost a vacuum state, and air is released from the air inlet check valve 65 to the cylinder 63.
Fill inside. At this time, the backflow of air from the air inlet 54 is prevented by the compressed air backflow prevention valve 62.

By repeating the above operation, the punch residue 4
2 is reliably and efficiently discharged to the punched die-cass discharge hole 33 and the die holder-cass discharge hole 52.

The air pressure and flow rate of the compressed air necessary and optimal for discharging the punch residue 42 generated in one punch press process are determined by the set position of the switch 71, the internal sectional area of the piston 67, and the moving distance. Can be set freely.

If the punch holder 21 and the piston 67 are connected by a connecting rod or the like, the piston 67
Is omitted, and the size can be reduced.

In the present embodiment, the air flowing into the cylinder 63 is taken in from the natural world.
4 may be provided with a filter for removing moisture, impurities and the like.

[0029]

As described above, the present invention has an effect that a compact press device can be provided by connecting and integrating the compressed air generating section with the upper mold section and the lower mold section. is there.

Further, the lower mold part is provided with a die plate and a die holder. By discharging compressed air from the air discharge holes of the die holder, the die holder waste of the die holder is discharged from the punched diecass discharge hole of the die plate. Since the pressure can be reduced at a stroke toward the holes, the punched waste can be efficiently discharged.

The compressed air generating portion has a bottomed cylindrical cylinder having a compressed air inflow hole connected to the air inflow hole of the lower mold portion and a compressed air inflow hole connected to the air intake inflow hole on the side surface. By providing a piston that moves in accordance with the vertical movement of the upper mold part in the cylinder, it is possible to produce compressed air efficiently and inexpensively.

Further, by providing the urging member between the inner bottom surface of the cylinder and the piston, the piston can be operated with high accuracy, and the compressed air can be produced more efficiently.

The air inlet has an air inlet check valve for restricting the flow of air taken into the cylinder in one direction, and the compressed air reverse flow for restricting the flow of compressed air to the compressed air inlet in one direction. By having a valve,
Since the flow of the compressed air can be kept constant, there is an effect that clogging of the punched waste can be prevented.

Further, by providing a connecting portion that operates in accordance with the vertical movement of the upper mold portion between the upper mold portion and the piston, the press device can be provided at low cost.

Further, the air inlet hole is provided with a filter, which has an effect of removing moisture, impurities and the like.

A switch unit for switching in accordance with the vertical movement of the upper mold, and an electromagnetic valve for controlling the supply of compressed air from the compressed air generating unit to the lower mold unit based on a signal from the switch unit. With this arrangement, it is possible to control the compressed air ejected to the waste discharge hole to a predetermined value.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a press device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating the same operation.

FIG. 3 is a cross-sectional view of a conventional press device.

[Explanation of symbols]

 23 Punching punch 31 Punching die 32 Die plate 33 Punching diecass discharge hole 41 Member to be punched 42 Punching scum 51 Die holder 52 Die holder kas discharge hole 53 Air ejection hole 54 Air inflow hole 61 Compressed air inflow hole 62 Compressed air reverse flow Check valve 63 cylinder 64 air inlet inlet hole 65 air inlet check valve 66 urging member 67 piston 71 switch 72 solenoid valve

Claims (8)

[Claims] An upper die having at least a punch, a punching die for punching a member to be punched by descending the upper die, and a waste discharging hole for discharging the punched waste. And a compressed air generating unit for compressing air in accordance with the lowering operation of the upper mold part and supplying compressed air to the lower mold part. 2. The lower mold part has a die plate having a punching die and a punching diecass discharging hole connected to the punching die, and a die holder waste discharging hole connecting to the punching diecass discharging hole of the die plate. 2. The press device according to claim 1, further comprising an air ejection hole on a side surface of the die holder waste discharge hole and an air inflow hole connected to the air ejection hole. 3. A bottomed cylindrical cylinder having a compressed air generating portion on a side surface connected to a compressed air inflow hole connected to an air inflow hole of a lower mold portion and a compressed air inflow hole connected to an air intake hole. 2. The press apparatus according to claim 1, further comprising a piston that moves in accordance with the vertical movement of the upper mold part in the cylinder. 4. Between the inner bottom surface of the cylinder and the piston,
The press device according to claim 3, further comprising an urging member. 5. A compressed air reverse flow, which has an air inlet check valve for restricting the flow of air taken into the cylinder into the air inflow hole in one direction, and restricts the flow of compressed air to the compressed air inflow hole in one direction. The press device according to claim 3, further comprising a valve. 6. The press device according to claim 3, wherein a connecting portion that operates according to the vertical movement of the upper mold portion is provided between the upper mold portion and the piston. 7. The press device according to claim 3, wherein a filter is provided in the air inflow hole. 8. A switch for switching in accordance with the vertical movement of an upper mold, and an electromagnetic valve for controlling supply of compressed air from a compressed air generator to a lower mold based on a signal from the switch. The press device according to claim 1, further comprising: