JPH0133227Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) This invention relates to a device for supporting materials in a turret punch press, and more specifically, to a device for supporting a material in a turret punch press. The present invention relates to a material support device that can prevent scratches on the lower surface of a workpiece due to sliding contact between the upper surface of the die and the lower surface of the workpiece when the workpiece is moved in the front-rear, left-right directions.

(Prior Art) In general, a turret punch press has a disk-shaped upper turret that supports a large number of punches, and a lower turret that supports a large number of dies corresponding to each punch, which are vertically opposed and rotatable. In addition to preparing for
It is equipped with a vertically movable ram that can freely strike a punch indexed at a predetermined position. Furthermore, the turret punch press uses a clamping device that can freely grip one end edge of the workpiece in the front, back, left and right directions in order to move and position the plate-shaped workpiece punched by the punch and die in the front and back and left and right directions. Equipped with freedom of movement.

(Problems to be Solved by the Invention) In the conventional turret punch press having the above configuration, when a part of the workpiece is positioned on the lower turret and the workpiece is moved back and forth and left and right, the die on the lower turret is moved. Since the workpiece is moved while the upper surface and the lower surface of the workpiece are in contact with each other, scratches may occur on the lower surface of the workpiece.

In order to solve the problem of scratches caused by the sliding contact between the upper surface of the die and the lower surface of the workpiece, in an ordinary punch press, as shown in Japanese Utility Model Publication No. 55-55883, for example, there is a A known configuration is known in which a workpiece is supported in a state separated from a die, and the workpiece is moved in a state separated from the die.

However, in a turret punch press, a large number of dies are arranged and supported in an arc shape on a disk-shaped lower turret, and there is no means for supporting a workpiece on the upper center surface of the lower turret. For example, in a situation where the clamping device is close to the die of the processing device and the workpiece completely covers the upper surface of the lower turret, the leading edge of the workpiece is attached to a separate die located symmetrically to the die at the processing position. However, due to its own weight, it may curve and come into contact.

Therefore, simply pushing up the workpiece to separate it from the die near the processing position is not sufficient to prevent scratches on the lower surface of the workpiece.

This idea was made in view of the problems mentioned above.

Embodiments of this invention will be described in detail below with reference to the drawings.

(Example) First, the general structure of the turret punch press will be explained briefly. As shown in FIG. The frame structure is such that both sides of the frame 9 are supported. A disk-shaped upper turret 13 is rotatably attached to the lower part of the upper frame 9, and is equipped with various types of punches 11 that can be attached and detached. base 3
A lower turret 15 facing the upper turret 13 is rotatably mounted on the upper surface, and a large number of dies (lower molds) 17 facing various types of punches 11 are arranged in an arc shape on the lower turret 15. It is installed in a removable and replaceable manner. The axial center of the upper turret 13 and the axial center of the lower turret 15 are arranged on the same axis, and the upper turret 13 and the lower turret 15 are controlled by an appropriate control device (not shown) such as a numerical control device. They are rotated synchronously in the same direction.

A ram 19 is mounted approximately at the center of the lower surface of the upper frame 9 so as to be movable up and down. This ram 19 is for striking the punch 11 which is indexed and positioned below the ram 19 by the rotation of the upper and lower turrets 13 and 15. Therefore,
After positioning the plate-shaped workpiece W between the punch 11 attached to the upper turret 13 and the die 17 attached to the lower turret 15, the punch 11 and the die 17 are pressed by the ram 19, so that the punch 11 and the die 17 are pressed together. Therefore, the workpiece W can be punched.

The turret punch press 1 is provided with a workpiece movement and positioning device in order to move and position the workpiece W in the front, back, left and right directions. That is, a guide rail 23 extending in the left-right direction is attached to an upper position on the front and rear sides of the base 3, and a first carriage 25 is supported on the guide rail 23 so as to be slidable in the left-right direction. A movable table 27 disposed on both the front and rear sides of the base 3 is integrally attached to the first carriage 25.

Further, a second carriage 29 is mounted on the first carriage 25 and is movable horizontally in the front-back direction perpendicular to the moving direction of the first carriage 25. A clamp device 31 is attached which can freely grip one end edge of the holder. The movement of the second carriage 29 in the front-rear direction and the movement of the first carriage 25 in the left-right direction are carried out under the control of an appropriate control device such as a numerical control device, as in a conventional turret punch press. It is something that can be done.

Therefore, by appropriately moving the first carriage 25 in the left-right direction along the guide rail 23 and moving the second carriage 29 in the front-back direction perpendicular to the direction of movement of the first carriage 25, the clamp can be removed. The device 31 will be moved back and forth, left and right. Therefore, the work W whose one end is held by the clamp device 31 is held by the punch 11 and the die 1.
It will be moved and positioned in the front, back, left and right directions relative to 7 etc. That is, the control device can appropriately move and position the workpiece W in the front, rear, left, and right directions, and select an appropriate punch 11 and die 17 to perform punching.

As described above, the material support device 21 is provided close to the lower turret 15 in order to push up and support the workpiece W away from the upper surface of the die 17 when moving the workpiece W in the front-rear and left-right directions. It is being More specifically, as shown in FIGS. 2 and 3, the material support device 21 mainly includes a material support table on which a workpiece W is placed, and a fluid pressure system for moving the material support table up and down. and an actuating device.

The material supporting tables include a center table 33a and a peripheral table 33b. First, the center table 33a will be explained.

The center table 33a has a disc shape and is arranged at the upper center of the lower turret 15, avoiding the area where the plurality of dies 17 provided in the lower turret 15 are arranged. Then, the lower turret 1
5, a plurality of fluid pressure operating devices 35a are provided in order to move the center table 33a up and down, and the piston rod 37a of each fluid pressure operating device 35a, which is vertically movable, is attached to the back surface of the center table 33a. are linked as appropriate. A piston 39a is integrally provided on the piston rod 37a, and the piston 39a is fitted into the inside of the cylinder 41a. and,
On the upper and lower sides of the piston 39a,
A contraction side pressure chamber 43a and an expansion side pressure chamber 45a, respectively.
An elastic member 47a for pushing the piston 39a back downward is provided in the contraction side pressure chamber 43a. A conduit 49 through which working pressure fluid passes is formed in the lower turret shaft 15a of the lower turret 15, and communicates with the extension side pressure chamber 45a through a conduit 51 formed in the lower turret 15. ing.

Next, the peripheral table 33b will be explained. The peripheral table 33b is provided around the lower turret 15, and the peripheral table 33b is provided around the lower turret 15.
They are adjacent to each other for approximately half the circumference of the 5. The base 3 is provided with a circular lower turret support 53, and a bracket 55 provided on the lower turret support 53 is provided with a fluid pressure operating device 35b similar to the above. There is. Then, the peripheral table 33 is moved by the piston rod 37b of the fluid pressure actuation device 35b.
b is supported, and the peripheral table 33b is configured to move up and down in accordance with the expansion and contraction operations of the piston rod 37b.

Further, a link mechanism 57 is provided between the lower portions on both sides of the peripheral table 33b and the base 3, and the upper surface of the peripheral table 33b is configured to move up and down while maintaining the horizontal level. . Material support members 59, such as free stroke bearings, are arranged at appropriate intervals on the upper surfaces of the center table 33a and the peripheral table 33b.

Note that the base 3 includes a bearing case 6.
1 is provided, and this bearing case 61
The lower turret shaft 15a is pivotally supported by bearings 63, 63 installed inside.

Further, a sprocket 65 is provided on the back surface of the lower turret 15, and is rotated via a chain 67 by a rotational drive device (not shown).

In the above configuration, operating pressure fluid is put into the extension side pressure chamber 45a of the fluid pressure operating device 35a, presses the piston 39a upward, and moves the center table 33 through the piston rod 37a.
a to the position indicated by the broken line in FIG. Similarly, when the peripheral table 33b is also raised to the position indicated by the broken line in FIG. 3, the workpiece W supported by the center table 33a and the peripheral table 33b is separated from the upper surface of the die 17. Therefore, in the above state, even if the lower turret 15 is rotated or the clamping device 31 is used to move and position the workpiece W in the front, back, left and right directions, the workpiece W may slide against the upper surface of the die 17 and cause scratches on the lower surface. It will never be.

Then, by rotating the turret, an appropriate punch 11 and die 17 are selected, and the work W
When the piston 39a is positioned by the movement of the center table 3, the piston 39a is pressed downward by the elastic member 47a provided in the compression side pressure chamber 43a of the fluid pressure actuator 35a, and the center table 3
The top surface of 3a is lowered until it coincides with the pass line. Similarly, the peripheral table 33b is also
The workpiece W is lowered until it coincides with the pass line, and the workpiece W is brought into contact with the die 17. And in the above situation,
The workpiece W is punched.

[Effects of the invention] As can be understood from the above description of the embodiment, in this invention, a center table 33a is provided in the center of the lower turret 15 so as to be movable up and down, and a center table 33a is provided in the center of the lower turret 15, and a center table 33a is provided around the outside of the lower turret 15. A table 33b is provided so as to be movable up and down, and a plate-shaped workpiece W is placed on the die 1 by each table 33a, 33b.
According to the present invention, the clamp device 31 is close to the lower turret 15 and the work W completely covers the upper surface of the lower turret 15. Even if the die 1 indexed to the processing equipment
It is possible to prevent sliding contact between the separate die 17 provided at a symmetrical position to the workpiece W and the vicinity of the tip of the workpiece W. That is, when the workpiece W is moved, sliding contact between the die and the workpiece W at positions other than the processing position can be prevented, and the lower surface of the workpiece W is not scratched.

[Brief explanation of the drawing]

Figure 1 is a side view of the turret punch press that implemented this invention, Figure 2 is a plan view of the main parts of Figure 1,
FIG. 3 is a cross-sectional view taken from FIG. 2. 1...Punch press, 15...Lower turret,
17...Die, 33a...Center table, 33
b...Peripheral table, 59...Material support member.

Claims (1)

[Scope of utility model registration request] Upper turret 13 supporting a large number of punches 11
and a lower turret 15 supporting a large number of dies 17 corresponding to each of the punches 11 are provided vertically facing each other and rotatably provided, and a ram 19 which can freely strike the punch 11 indexed at a predetermined position is moved up and down. A clamping device 31 is movably provided and is capable of gripping a plate-shaped workpiece W to be punched by the punch 11 and die 17.
As a material support device in a turret punch press, the material support device is provided in a turret punch press that is movable in the front, back, right and left directions at the lateral positions of the turret 15, and in the center of the lower turret 15, which supports a large number of dies 17 arranged in an arc shape,
The center table 33a, which has a plurality of material support members 59 on its upper surface, is movable up and down.
A peripheral table 33b, which is provided with a plurality of material support members 59 on the upper surface, is provided around the outside of the lower turret 15 and is movable up and down. A material support device in a turret punch press, characterized in that the upper workpiece W is provided in a state where it is separated from a die 17 so as to be freely pushed up.