JPH0137789Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an intermediate conveying device for a transfer press. The intermediate conveyance device is installed between the blank material supply device attached to the transfer press and the transfer press.The intermediate conveyance device is installed between the blank material supply device attached to the transfer press and the transfer press. A device that transports blanks up to the idle stage, which passes the blanks to the feed bar.

Conventionally, an intermediate conveying device has magnetic rollers arranged in a row on the lower surface, and suction devices are provided at intervals of the feed pitch of the feed bar on the lower surface of a moving body that performs advance/return motion in conjunction with the feed bar of the press.
The moving body is controlled so that the lower surface of the suction tool passes vertically under the magnet roller, rising at the advance end and lowering at the return end, and the suction is performed so that it attracts when it descends and releases when it ascends. The equipment was controlled and transported to the idle stage. However, since both the moving body and the suction device are controlled, the control system is complicated and has a high failure rate.

The purpose of the present invention is to eliminate these drawbacks by providing a feed bar member below the conveyor member having the magnet roller and interlocking with the feed bar in parallel with the conveyor member, and providing suction devices on this at feed pitch intervals. A transfer press that eliminates the need for a control system by automatically adsorbing a blank material that is attracted to a magnetic roller when it is lifted up and pressed, and automatically released when it is lowered and pulled. An object of the present invention is to provide an intermediate conveyance device. Embodiments of the present invention will be described below with reference to the drawings.

1 and 2, an intermediate conveyance device provided between the transfer press 1 and the blank supply device 2 is shown.

A conveyor member 5 having a large number of magnet rollers 4 is mounted substantially horizontally on the lower surface of the overhanging frame 3 of the transfer press 1 by means of struts 6. The conveyor members 5 are provided in four rows toward the transfer press 1 from a position directly above where the lifter 7 of the blank material supply device 2 pushes up the blank materials 9 loaded on the stacker 8, as shown in FIG. The projecting frame 3 is provided with a cylinder 11 equipped with a vacuum cup 10 for taking out blanks 9 pushed up to a certain height by a lifter 7 one by one from above. The vacuum cup 10 moves up and down between the conveyor members 5 as shown in FIG. It's getting old. A feed bar member 12 is provided below the conveyor member 5 and substantially parallel to the conveyor member 5, and is connected to a feed bar 13 of the transfer press 1. The feed bar 13 performs advance return motion in its longitudinal direction, clamp/unclamp motion in the horizontal direction perpendicular to the longitudinal direction, and lift/down motion in the vertical direction. The feed bar member 12 may be interlocked to avoid the clamping and unclamping movements. The feed bar member 12 is provided with suction devices 14 at a plurality of locations, three locations in this example, which move upward at constant strokes of the advance/return movement of the feed bar 13, that is, at intervals of a constant feed pitch. As shown in FIG. 2, the feed bar members 12 are located on both sides below the conveyor member 5, and the suction tool 14 is extended by arms 15 so as to be located below the conveyor member 5. Feed bar member 1
2 is at the return end, as shown in FIG. 14 occupies the position of idle stage A of transfer press 1. A blank chute 16 is fixed to the frame of the press 1 on the idle stage A. The blank chute 16 is provided between the suction tools 14, 14 on both sides, as shown in FIG. As the feed bar member 12 moves up and down, the top surface of the suction tool 14 is exposed to the blank material 9 that has been suctioned by the magnet roller 4.
The blank chute 16 is raised to a position slightly higher than the lower surface of the blank chute 16 and lowered to a position slightly lower than the upper surface of the blank chute 16.

In FIG. 3, the structure of the suction tool 14 provided on the arm 15 extending from the feed bar member 12 is shown. The suction tool 14 is provided with a cylinder member 17 which can be raised and lowered freely on an arm 15, whose upper limit is regulated, and which is urged upward by a spring 18.A piston member 19 adapted to this cylinder member 19 slightly protrudes upward from the cylinder member 17, and has a protruding end. Attached is a cup 20 made of a flexible material, for example rubber. A passage 21 is provided extending from the center of the inner surface of the cup 20 and passing through the piston member 19. Piston member 19
is urged downward by a spring 22, and its lower surface is in contact with an O-ring 23 fixed to the bottom of the cylinder chamber of the cylinder member 17. A supply port 24 for supplying vacuum air is provided on the bottom plate of the cylinder member 17 at the center of the O-ring 23.
Further, a vent hole 25 communicating with the outside air is provided on the side of the bottom plate. Therefore, when a downward force is applied to the cup 20, the piston member 19 comes into contact with the O-ring 23, and the vacuum air supplied from the supply port 24 is supplied to the inner surface of the cup 20 through the passage 21.
Conversely, when an upward force is applied to the cup 20, the piston member 19 and the O-ring 23 are separated and the vacuum air escapes to the vent hole 25. Since it is a vacuum, it is natural that air flows in the opposite direction.

Next, we will discuss the effect. One blank material 9 taken out by the vacuum cup 10 of the blank material supply device 2 is attracted to the magnetic roller 4 of the conveyor member 5. When the feed bar member 12 together with the feed bar 13 rises at the return end from the position indicated by the dashed line shown in FIG.
A downward force acts on the cup 20 shown in FIG. 3, vacuum air is supplied into the cup 20, and the suction tool 14 suctions the blank material 9. If it is pushed up too much, the spring 18 will contract and escape, so there is no problem. Next, when the feed bar member 12 moves forward by the feed pitch, the blank material 9 adsorbed by the suction tool 14 moves forward while being adsorbed by the rotation of the magnet roller 4. When the feed bar member 12 descends at the advance end, the blank material 9 is moved forward by the suction tool 14. The blank material 9 remains attracted to the magnet roller 4 which has a strong adsorption force, and the cup 20 of the adsorption tool 14
An upward force acts on it due to its own adsorption force. Therefore, the piston member 19 separates from the O-ring 23, and the suction tool 14 loses its suction force, releases the blank material 9, and descends. After being lowered, the feed bar member 12 performs an unclamping motion and retreats, reaching the return end and repeating the above process. When the blank material 9 is attracted to the suction tool 14 from the forward end of the conveyor member 5 and moves forward, it separates from the magnet roller 4, and when the suction tool 14 descends in idle stage A, the blank material 9 is passed onto the blank chute 16. It will be done. The blank material 9 on the blank chute 16 is conveyed by the feed bar 13 of the press onto a mold (not shown) for the next process.

As is clear from the above description, according to the present invention, by providing a feed bar member below the conveyor member, blank material can be automatically sucked and released, eliminating the need for a control system and reducing failures. The practical effects and benefits are great.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of the main part of a transfer press equipped with an embodiment, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is a sectional view of FIG. 2. 1 is a transfer press, 2 is a blank supply device, 3 is an overhanging frame, 4 is a magnet roller, 5 is a conveyor member, 6 is a column, 7 is a lifter,
8 is a stacker, 9 is a blank material, 10 is a vacuum cup, 11 is a cylinder, 12 is a feed bar member, 13 is a feed bar, 14 is a suction tool, 15
is an arm, 16 is a blank chute, 17 is a cylinder member, 18 is a spring, 19 is a piston member, 20 is a cup, 21 is a passage, 22 is a spring, 23 is an O-ring, 24 is a supply port, and 25 is a vent port. be.

Claims (1)

[Scope of Claim for Utility Model Registration] A conveyor member 5 which is fixed to an overhanging frame of a transfer press facing the conveying direction, and has a number of magnetic rollers rotatable while sucking and holding blanks on its lower surface; A feed bar member 12 that is provided opposite to and parallel to the lower surface of the member 5 and performs at least advance, down, return, and lift movements in conjunction with the feed bar of the transfer press.
The feed bar members 12 are arranged in a protruding manner on the upper surface of the feed bar member 12 at feed pitch intervals in the conveying direction, and the blanks held on the conveyor member 5 are adsorbed by the lift movement at the return end, and the blanks are released by the down movement at the advance end. An intermediate conveying device for a transfer press, comprising: a plurality of suction tools 14;