JPS6317536Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a blank material pedestal switching device in a transfer press.

As shown in FIG. 1, in order for the vacuum feeder V as a material supply device of the transfer press, for example, to deliver the blank material R to the feed bar F of the transfer press P, the vacuum feeder V is placed on the entrance side of the transfer press P. There is a transfer press in which two blank material receivers W are installed, but when the size of the blank material changes greatly, such a fixed blank receiver cannot cope with it.

Therefore, in order to cope with this, as a conventional example, as shown in Fig. 2, the machine frame 1 of the transfer press, the clamp unit, etc.
Receiving plates 3, 4, and 5 are fixed with bolts 6 in parallel to the feeding direction S on the receiving stand 2 installed above, at intervals in the center of the feeding line and on both sides thereof. Depending on the size, the bolts 6 must be removed and the receiving plates 3 and 5 must be shifted and fixed, which takes time. In addition, as shown in FIG. 3, angles 11, 12, 13 with receiving plates fixed to the upper surface of the machine frame 7 of the transfer unit or clamp unit, etc.
are installed parallel to the feed direction at the center of the feed line and on both sides thereof, the central angle is fixed to the machine frame 7, and the angles 11 and 13 on both sides are opposed and movable in a direction perpendicular to the feed direction. The angle 11,
12 and 13, and angles 11 and 13 on both sides.
Attach the adjustment screw that screws into the bracket 2.
2 and a manual handle 16 via the rotation transmission device 14
Alternatively, there is also a pedestal switching device that uses an electric motor 17,
This method requires visual inspection or a limit switch 18 or the like to select the moving position of the receiving plate, which is complicated, and if the position is selected incorrectly, the receiving plate will hit the finger 20 attached to the feed bar 19.
There were drawbacks such as damage to the finger 20 and others.

As mentioned above, in the transfer press, the shapes and dimensions of blanks to be handled vary widely due to the effects of high-mix, low-volume production. In this case, the pedestal for the blank material is used to support the blank material,
Since it is necessary to meet the requirements of not interfering with the feed bar or the fingers attached to the feed bar, the cradle must be able to move easily to match the shape and size of the blank material, and the spacing between the pedestals can be adjusted. It is desirable to widen or narrow.
It is an object of the present invention to provide such a pedestal.

In addition, the blank material is Bakyum cup → pedestal →
The feed bars are delivered in order and supplied to the transfer press. This configuration is no different from the conventional one.

The present invention will be explained based on the drawings of one embodiment.

This device is fitted with a guide bar 24 installed perpendicularly to the feeding direction on a bracket 23 erected on the upper surface of the transfer unit 21, and in the center is a long guide bar 24 fixed to the transfer unit. The fixed pedestal 25 is provided with movable pedestals 28 and 29 on both sides thereof, which are of the same length as the fixed pedestal 25 and can be moved in parallel with the fixed pedestal 25 by cylinders 26 and 27, respectively. It is being

The cylinders 26 and 27 are each double cylinder 3.
0,31, cylinder 3
0 also serves as the piston of the cylinder 31.

The tip of the piston rod 32a of the piston 32 of the cylinder 30 is connected to movable pedestals 28 and 29.

The covers 33 and 34 of the cylinder 30 have fluid supply ports 33a and 34a and holes 33b and 34b, respectively.
It communicates with fluid chambers P and Q.

Further, the covers 35 and 36 of the cylinder 31 have fluid supply ports 35a and 36a, respectively, and the piston portion 3
It communicates with fluid chambers R and S on both sides of 1a.

Next, the operation of this device will be explained.

FIG. 7 shows a state in which fluid is supplied to the supply ports 33a, 35a, the piston 32 is in contact with the cover 34, the piston portion 31a of the cylinder 31 is in contact with the cover 36, and the movable pedestals 28, 29 are opened to the maximum. It shows.

From this state, move the pedestals 28 and 29 one stroke α
In order to move it toward the center and narrow the distance between it and the fixed pedestal 25, it is sufficient to supply fluid to the fluid chamber S from the fluid supply port 36a and discharge the fluid in the fluid chamber R.

To further reduce the fit by one stroke a, fluid is supplied to the fluid supply port 34a, fluid is discharged from the fluid chamber P, fluid is supplied to the fluid chamber R from the fluid supply port 35a, and the fluid in the fluid chamber S is discharged. Bye. In order to further narrow the gap by one stroke α from this state and minimize the distance between the movable pedestals 28 and 29, the fluid in the fluid chamber R must be discharged and the fluid must be supplied to the fluid chamber S from the fluid supply port 36a. Bye.

As described above, the position of the movable pedestal can be displaced in four stages by supplying and discharging fluid to and from the cylinder, and it is possible to respond to wide changes in the size of the blank material.

Further, by moving each of the movable pedestals 28 and 29 independently rather than simultaneously and symmetrically, it is possible to secure the pedestal positions corresponding to blanks of various irregular shapes. Furthermore, the stroke lengths of the cylinders 30 and 31 may be arbitrarily set without having to have a 2:1 ratio as described above.

According to the present invention, since a cylinder with a double cylinder structure is attached to the movable pedestal, the position of the movable pedestal that receives the blank material can be changed depending on the size and shape of the blank material sent by the intermediate conveyance device. Since the stage can be easily changed, the versatility of the pedestal for blank materials can be greatly increased.

[Brief explanation of the drawing]

Fig. 1 is a plan view for explaining a blank holder of an example of a conventional transfer press, Figs. 2 and 3 are perspective views for explaining a blank holder of other conventional examples, and Fig. 4 is an embodiment of the present invention. 5th plan view of the transfer press equipped with the switching device L for the blank material cradle.
The figure is an enlarged view of the blank material pedestal switching device L in FIG. 4, FIG. 6 is a partial view taken in the direction of arrow A in FIG. 4, and FIG. 8
The figure is a view from arrow B in Fig. 7. 1 is the machine frame, 2 is the cradle, 3, 4, 5 are the catch plates, 6 is the bolt, 7 is the machine frame, 8, 9, 10 are the catch plates, 11,
12 and 13 are angles, 14 is a rotation transmission device, 1
5 is an adjustment screw, 16 is a manual handle, 17 is an electric motor, 18 is a limit switch, 19 is a feed bar, 20 is a finger, 21 is a transfer unit, 22 is a bracket, 23 is a bracket, 2
4 is a guide bar, 25 is a fixed pedestal, 26 and 27 are cylinders, 28 and 29 are movable pedestals, 30 and 31 are cylinders, 32 is a piston, 33 and 34 are covers, and 35 and 36 are covers.

Claims (1)

[Scope of utility model registration request] In a blank material holder provided on the entrance side of the transfer press to receive and support the blank material and to deliver the blank material to the feed bar of the transfer press, a pair of holders for receiving the blank material are connected to the blank material. a piston rod that is slidably provided in a direction perpendicular to the material feeding direction and has the pedestal fixed thereto; a cylinder to which the piston of the piston rod is fitted; a piston formed on the outer periphery of the cylinder; A cylinder device having a cylinder fitted with a piston and fixed to a machine base, and the pair of pedestals are displaceable in stages with respect to the feed center of the blank material. Blank material pedestal switching device in Apress.