JPH03204127A - Inversion device for die holder - Google Patents

Abstract

PURPOSE:To make inverting motion smooth and to make the space small by clamping a die holder from the side by a piston pin of a piston cylinder through a hole worked on the side of an upper holder and inverting the die holder around a horizontal shaft at the center of the die holder. CONSTITUTION:A vertically movable frame 7 descends on an upper die holder 18 and a piston rod 19 of the clamp cylinder 6 is inserted into the pin hole of the side of a holder 18 to be clamped. The vertically movable frame 7 ascends, the holder 18 is drawn out of a guide post inserted into a lower die holder and a truck moves. The vertically movable frame 7 stops at a position possible to invert the upper die holder, an inverse frame 5 rotates 180 degrees round an inversion axis 8 as it clamps the upper die holder 18. The frame 5 abuts on a stopper pin 11a and stops. Another stopper pin 11b does not come in contact with a notch 21. Thereafter, the vertically movable frame 7 descends, the inverting holder 18 is placed on a running truck and clamping by a clamp cylinder 6 is released.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a die holder reversing device, and more particularly to a die holder reversing device for reversing an upper die holder when separating or assembling the upper and lower die holders.

(Conventional technology) Generally speaking, press die holders are set and replaced after both the upper and lower die holders are removed from the press.

To facilitate cleaning, they are placed separately on the table with the goo mounting surface facing upward. Therefore, when setting the die holder in the press machine or removing it from the press machine and storing it, it is necessary to turn the upper die holder upward, that is, by 180 degrees. Conventionally, a die holder separation and inversion device uses a crane to lift the upper die holder, separate it from the lower die holder, and invert the upper die holder in a suspended state.

(Problems to be Solved by the Invention) As mentioned above, in the conventional method, a crane is used to reverse the upper die holder, so the reversing operation requires skill, and the suspended upper die holder may fall due to loss of balance when reversing. The problem was that it was dangerous.

An object of the present invention is to provide a die holder reversing device which is free from the danger of falling during reversing, allows easy loading and unloading of the upper die holder onto a trolley etc. after reversing, and facilitates separation, reversal, 9 assembly and transportation of the die holder.

(Means for Solving the Problems) A die holder reversing device according to the present invention includes an inverting frame that surrounds a die holder and is provided with a clamp device that engages and disengages from a side portion of the die holder by 2M, and a reversing frame that surrounds a die holder and rotates the reversing frame around a horizontal axis. A lifting frame that can be raised and lowered is pivotally supported so that the lifting frame can be moved up and down, an inversion frame rotation drive device that is attached to the lifting frame, and a stopper mechanism that is attached to the lifting frame and that positions the inversion frame in a horizontal position. It is made up of

(Example) Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a plan sectional view of a die holder reversing device according to an embodiment of the present invention, and FIG. 2 is a front sectional view taken along the line 1--2 in FIG. First, a rail 4 and a chain 3 are laid along the conveyance path of the die holder, and each end of the chain is fixed to both ends of the carriage 1 and stretched between sprockets spaced apart in the running direction of the carriage 1. The trolley l runs on a rail 4 by a trolley drive motor 2 connected to the shaft of one of the sprockets, carries die holders set up and down, and carries them into the device frame 12 of the reversing device according to the present invention. , separated within the inversion system.

The inverted die holders are loaded and taken out separately, top and bottom.

A frame-shaped lifting frame 7 is provided inside the reversing device frame 12.
is provided so as to be guided by rollers 13 and guide rails 17 on both sides thereof and moved up and down by a ball screw shaft 15. A lifting motor 14 for driving the lifting frame 7 is installed on the top of the device frame 12. 1st
As shown in the figure, a pair of reversing shafts 8 are rotatably supported at the front and rear of the center of the lifting frame 7 so as to protrude inside the frame. They are connected via a limiter 10.

Further inside the frame-shaped lifting frame 7 is an upper die holder 18.
A frame-shaped reversing frame 5 that surrounds the reversing frame 5 is provided in such a manner that it is pivotally supported (fixed) to the reversing shaft 8 at its central front and rear parts. A total of four clamp cylinders 6 are provided, one pair for each section. The piston trond 19 of each clamp cylinder 6 enters and exits into a pin hole in the side of the upper die holder 18 housed in the reversing frame. A pair of stopper pins 11a and 11b are fixed to the front part of the elevating frame 7 at positions on both sides of the central reversing shaft 8 so as to protrude inside the frame. In this embodiment, the distances from the reversing shaft 8 to the stopper pins 11a and llb on both sides are approximately equal, and furthermore, the distance from the reversing shaft 8 to the stopper pins 11a and llb on one side of the reversing frame 5 is approximately the same.
The side adjacent to is cut out in the shape of a piece, and this cutout 2
1, one stopper pin lla is inverted frame 5
As shown in the figure, the other stopper pin llb comes into contact with the upper surface of the reversing frame 5 in a horizontal state, thereby positioning the reversing frame 5.

In the above configuration, first, a case will be described in which the vertically combined die holders are separated and the upper die holder is turned into an inverted state.

At least half of one side of the traveling truck 1 is the reversing device frame 1
2 is pulled out to the outside, and the upper and lower die holders are placed thereon by a crane or the like.The upper and lower die holders are carried into the reversing device frame 12 by the movement of the cart 1, and the lifting frame 7 is moved onto the upper die holder 18 by the lifting motor 14. The piston rod 19 of the clamp cylinder 6 is inserted into the pin hole on the side of the upper die holder 18, and the upper die holder 18 is clamped. The elevating frame 7 rises, the upper die holder 18 is extracted from the guide post (not shown) inserted into the lower die holder, and the trolley l moves (banks) to the same side as the carry-in side with the lower die holder mounted thereon. At this time, at least one half of the other side of the traveling carriage 1 is located within the reversing device frame 12 [this completes the separation and removal of the lower die holder].

Next, the lifting frame 7 stops at a position where the upper die holder can be reversed, and the reversing motor 9 causes the reversing frame 5 to rotate 180 degrees around the reversing axis 8 while clamping the upper die holder 18.
Rotates (counterclockwise when viewed from the front, see Figure 2). 180°
At the time of rotation, the reversing frame 5 is rotated by the one stopper pin l.
la from the bottom side of the bin 11a, and the reversing frame 5
stops. The other stopper pin llb is attached to the frame 5 by the notch 21 of the inverted frame 5 which is inverted by 180°.
have no contact with. Thereafter, the elevating frame 7 is lowered, the upper die holder 18 in the inverted state is placed f2 on the traveling carriage 1, and the clamping of the upper die holder by the clamp cylinder 6 is released. As the elevating frame 7 rises, the traveling cart 1 moves to the side opposite to the carry-in side. At this time, the lower die holder is being transported from the trolley 1 to another location by a crane or the like [this completes the reversal and removal of the upper die holder].

When the upper and lower die holders, which are separated so that the die installation surface of the upper die holder faces upward, are to be combined into a working state, the above-mentioned operation is reversed.

(Effects of the Invention) As explained above, according to the present invention, the piston pin of the clamp cylinder clamps the upper die holder from the side using the hole machined in the side surface of the upper die holder, and the horizontal axis at the center of the upper die holder is The 0-inversion frame is very easy to invert and requires less space because it is inverted around the circumference, and even if there is a leak in the clamp cylinder piping during inversion, the upper die holder will not fall and is safe. Since it has a structure that surrounds the upper die holder, it can be easily loaded onto and taken out from the cart after the upper die holder is reversed. This method has many advantages, such as not requiring the skill of the reversing operator unlike conventional methods.

[Brief explanation of drawings]

FIG. 1 is a plan sectional view of a die holder reversing device according to an embodiment of the present invention, and FIG. 2 is a front sectional view taken approximately along line 1--2 in FIG. DESCRIPTION OF SYMBOLS 1... Traveling trolley, 4... Rail, 5... Reversing frame, 6... Clamp cylinder, 7... Lifting frame, 8... Inverting shaft, 9... Reversing motor, Lla ,
llb...stopper pin, 12...reversing device frame, 13...roller, 14...lifting motor, 15...
Pole screw shaft, 17... Guide rail, 18... Upper die holder, 19... Piston rod, 21... Notch. Figure 1 Sub-Agent Patent Attorney Rikichi Somekawa

Claims (1)

[Claims] a reversing frame that surrounds a die holder and is equipped with a clamp device that engages with and disengages from a side portion of the die holder; an elevating frame that is pivotally supported so as to rotate the reversing frame about a horizontal axis; A die holder reversing device comprising: a reversing frame rotation drive device attached to a frame; and a stopper mechanism attached to the elevating frame and positioning the reversing frame in a horizontal position.