JPH039862Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a rail for pulling out a moving bolster in a press.

(Prior Art) Moving bolsters have become popular in recent years because they can be carried into a press machine with a mold placed thereon, making it easier to set up work.
Methods for transporting the moving bolster into the press machine include using rails laid at the height of the press bed or running it on the floor, but when using rails, there are some issues regarding the treatment of the rails after the bolster is transported. Various efforts were made.

The rail known from Utility Model Publication No. 56-117930 is
The rail is rotatably supported inward and perpendicular to the running direction of the bolster around a fulcrum near the floor, and the rail is used standing up only when the bolster is running, and at other times it is laid down on the floor. It should be kept at the same height as the floor.

In the conventional example above, after the bolster is carried into the press machine, the rail can be folded and stored to make the floor flat, but since the rail does not descend perpendicular to the floor, the If this is the case, it will not be possible to lower the rail and bring the bolster to the same height as the floor. Therefore, when pulling out the bolster from the press machine to change the mold,
There were problems such as the fact that the bolster was at the same height as the bed, making it difficult to replace it, and that the bolster could not be rolled on the floor.

On the other hand, in order to solve these problems, for example, as seen in Japanese Utility Model Application Publication No. 54-82038,
There is a press machine in which a rail that is directly connected to the bed of a press machine is raised and lowered in the vertical direction so that the rail can be stored in a pit when not needed. However, in this case, unless the positioning accuracy between the bed and the rail is high, it is not possible to smoothly transfer the bolster between the rail and the bed.Furthermore, when the rail is raised, it is difficult to transfer the bolster between the rail and the bed. As a result, accessibility to the press machine is obstructed, so that it may not necessarily be possible to improve the workability of replacing the bolster.

(Problems to be Solved by the Invention) In order to solve the problems of the prior art, the present invention provides a drawer rail on which a bolster is placed so that it can be raised and lowered, and a load block that supports the mounting frame of the rail when the drawer rail is raised; To provide a moving bolster drawer device with excellent safety by providing a floor cover that covers a pit opening even when the drawer rail is erected.

(Means for Solving the Problems) The means for achieving the object of the present invention is to provide a pit on the floor near the press machine, and a frame equipped with a pull-out rail can be raised and lowered into the pit via a guide post. It is accommodated in Further, the pedestal is guided so that the drawer rail reciprocates between a top position where the drawer rail reaches a height equivalent to the bed of the press and a bottom position where the drawer rail is stored at a height equal to or lower than the floor surface. A vertical drive device for moving up and down along the post is provided, as well as a load block for supporting the topmost pedestal from below and a means for moving the load block into and out of the lower part of the pedestal.

Furthermore, an intermediate rail is provided that connects the end of the drawer rail of the pedestal supported by the load block and the bed of the press, and one end of this rail is attached to the press machine via a pivot so that it can freely rotate horizontally. The present invention is characterized in that a floor cover is installed and held and can be opened and closed to cover the upper opening of the pit at the same height as the floor surface.

(Function) When carrying the moving bolster into or out of the press machine, a vertical drive device composed of a hydraulic cylinder or the like is operated to raise the pedestal. As the gantry rises, when the gantry becomes slightly higher than the support height of the load block, the load block is guided to the lower part of the gantry, and the vertical drive device is operated to support the gantry on the load block.

Therefore, even if the support function of the vertical drive device is reduced or lost due to an unexpected power outage or other circumstances, the pedestal will be supported by the load block. Further, after the pedestal is raised to the uppermost position, the intermediate rail, which is pivotally held by the press machine, is horizontally rotated and connected to the drawer rail on the pedestal.

If the bed of the press and the drawer rail on the pedestal are held at the same height and connected via an intermediate rail, the moving bolster can run between the bed and the drawer rail.

Furthermore, the floor cover is designed to automatically open and close as the pedestal moves up and down.

(Example) Fig. 1 is a sectional view of the whole assembled, Fig. 2 is a plan view thereof, and Fig. 3 is a sectional view taken along line A-A in Fig. 2.
In the drawing, this device is installed only on one side of the press machine, but devices with the same structure are installed before and after the press machine, so that the bolster can be carried in from either the front or rear of the press machine. ing.

The moving bolster 1 is provided with wheels 2, 2 on its lower surface, and is carried in from either the front or rear of the press machine 3 and placed on the bed 4. The bed 4 is provided with a lift cylinder 5 for determining the fixed position of the bolster 1, and the wheels 2 of the bolster are
is placed on the lift cylinder 5, the piston 6 is lowered to fix the bolster 1 to the bed 7.

Intermediate rails 10, which serve as guide paths for bolsters, are provided on both sides of the front side of the press machine 3 so as to be horizontally rotatable about pivots 11. As mentioned above, the bolster can be carried into the press machine from either the front or the rear, so the intermediate rail 10 and the pull-out rail described later are also provided at the rear of the press machine (on the right side in the drawing), but these are omitted for convenience of the drawing. .

In the extending direction of the intermediate rail 10, a pedestal 12 is provided.
A drawer rail 13 is provided on the top surface, and the pedestal 12 is connected to guide posts 15, 15 erected in a pit 14 formed on the floor and can be moved up and down. When the height is reached, the drawer rail 13 is at the same height as the floor surface. Further, a pit 1 is provided on the lower surface of the center of the pedestal 12.
The pedestal 12 is connected to a piston rod 17 of a hydraulic cylinder 16 provided in the pedestal 4, and the pedestal 12 is raised and lowered by the operation of the hydraulic cylinder. That is, the hydraulic cylinder 16 constitutes a vertical drive device that moves the pedestal 12 up and down.

Furthermore, load blocks 18, 18 are provided for supporting both ends of the gantry at the uppermost position when the gantry 12 reaches the uppermost stage.

The load block 18 is rotatable around a stop shaft 19 and can be moved in and out of the lower surface of the pedestal 12. A tongue piece 20 is provided protruding from the stop shaft 19, and the tongue piece 20 is connected to a rod 22 of an air cylinder 21. Therefore, by operating the air cylinder 21 and moving the tongue piece 20 back and forth, the load block 18 can be rotated about the stop shaft 19. The rod 22 is extended and connected to the tongue 20 of the load block 18 provided on the opposite side, so that one air cylinder 21 operates two load blocks 18, 18.

Further, floor covers 23 and 24 that can be opened and closed are attached to the pit 14 by hinges, and when the pedestal 12 is raised, the pedestal 12
3, the floor covers 23 and 24 are pushed up and opened as shown by the solid line in FIG.
When the floor covers 23 and 24 are stored in the floor cover 4, the pushing up action by the pedestal 12 is eliminated, so the floor covers 23 and 24 can be closed and rotated by their own weight.

The embodiment has the above configuration, and FIG. 1 shows the moving bolster 1 mounted on the press machine,
Further, the bolster 1 is also placed on the pedestal 12. Therefore, in order to discharge the press machine's bolster, carry the bolster on the pedestal 12 into the press machine, and then lower the empty pedestal 12, first the intermediate rail 10 is manually folded, and then the hydraulic cylinder 16 is slightly lowered. When a gap is created between the load blocks 18, 18 and the frame,
The load block is rotated 90 degrees by the air cylinder 21 and moved away from the pedestal 12. Next, the pedestal 12 is lowered by the hydraulic cylinder 16, and when the drawer rail 13 and the pedestal 12 are stored in the pit, the floor covers 23 and 24 are also closed at the same time.

Also, when pulling out the press machine bolster,
When the pedestal 12 is raised by the hydraulic cylinder 16, the floor covers 23 and 24 are automatically opened while covering the pit opening. The frame is supported by load blocks 18, 18. At this time, the hydraulic cylinder 16 applies hydraulic pressure to the downward side and pressurizes the load blocks 18, 18 in a direction to compress them, thereby preventing the load blocks from falling over.

Next, the intermediate rails 10, 10 are set, and the bolster 1 of the press machine is pulled out through the intermediate rails 10, 10, and is run on the intermediate rails 13, 13.

(Effects of the invention) Since the drawer rail provided on the pedestal is movable in the vertical direction, the drawer rail can be stopped at the same height as the floor. This makes it easy to replace the mold on the rail after pulling out the bolster.

In addition, since the press bed and the drawer rail are connected via an intermediate rail that is pivoted and held in the press machine so as to be horizontally rotatable, the moving bolster can be used without having to set the drawer rail very highly. can be smoothly pulled out and brought in. Furthermore, since a space can be secured between the press machine and the drawer rail by removing the intermediate rail, the press machine can be more easily accessed and the moving bolster can be replaced more easily.

In addition, the pit is equipped with a floor cover that automatically opens and closes as the pedestal is raised and lowered, so the opening of the pit is not exposed even when the pedestal is raised, making it safe. Since the pedestal is supported at the uppermost position using blocks, the pedestal does not fall down carelessly and is therefore safe.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the entire assembly, FIG. 2 is a plan view thereof, and FIG. 3 is a cross-sectional view taken along the line AA in FIG. 1...Moving bolster, 2...Wheel, 3...
...Press machine, 4...Bed, 5...Lift cylinder, 6...Piston, 7...Bed, 10...
Intermediate rail, 11... Pivot, 12... Frame, 13
...Drawer rail, 14...Pit, 15...Guide post, 16...Hydraulic cylinder, 17...Piston rod, 18...Load block, 19...
Stop shaft, 20... tongue piece, 21... air cylinder, 2
2... Rod, 23, 24... Floor cover.

Claims (1)

[Scope of utility model registration request] A pedestal is installed in a pit in which a press machine is installed, and is movable up and down via a guide post.A drawer rail is installed on the top surface of the pedestal toward the bed of the press, and the drawer rail has a height equivalent to that of the bed of the press. a vertical drive device that moves the pedestal up and down along a guide post so as to reciprocate between the top position at which it reaches the height of the floor and the bottom position at which it reaches the height of the floor; a load block that supports the pedestal from below when positioned on an upper stage; means for causing the load block to protrude and retract from the lower part of the pedestal; an end of a drawer rail on the pedestal supported by the load block; An intermediate rail connected to the bed of the press and having one end pivotally connected to the press machine for horizontal rotation, and a floor cover that can be opened and closed to cover the upper opening of the pit at the same height as the floor surface. Equipped with a moving bolster pull-out device.