JPS5919551Y2 - Drawbar mounting device for die casting machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drawper attachment device for a die-casting machine.

Conventionally, as shown in FIG.
An ejector plate f connected to a drawbar e is interposed, and by operating an air cylinder d, the ejector plate f presses the eject pin a and pushes out the molding door in the mold. Product extrusion devices are known.

However, in this type of product extrusion device, the tip of the drawbar e is connected to the ejector plate f by screwing, so removing and installing the drawbar every time the mold is replaced is extremely troublesome. The drawback was that it was inefficient.

Therefore, in view of such conventional drawbacks, the present invention has been proposed in which a drawbar is fitted into and inserted into an ejector plate and a cover plate attached to the ejector plate, and the cover plate can be fitted into and removed from the ring groove of the drawbar. An object of the present invention is to provide a drawper mounting device for a die-casting machine which eliminates the above-mentioned drawbacks by fitting a locking member supported so as to be movable only in a specific direction to attach an ejector plate to a drawbar.

EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention will be explained about an Example based on drawing.

In FIGS. 1 to 3, 1 is an ejector plate that pushes out an eject pin (not shown) set in a mold 2;
3 is a mold mounting board (movable die plate).

4 is a drawbar of an air cylinder (not shown),
A replaceable adapter 5 is screwed onto the tip.

The end of the adapter 5 is formed into a truncated cone shape, and a ring groove 6 is formed on the outer periphery.

7 is a drawbar fitting hole formed in the ejector plate 1, and the tip of the adapter 5 is a bag-shaped cover plate 8.
It is inserted through the through hole 9 of.

Reference numeral 10 denotes a locking member having two pronged parts that can be fitted into and removed from the ring groove 6, and a rotating lever 13 as an operating lever is inserted into a rectangular engagement hole 12 formed in a protrusion 11 protruding from the upper part of the locking member.
A bag-shaped cover plate 8 fixed to the rear surface of the ejector plate 1 is fitted to the tip (rectangular cross section) of the ejector plate 1.
The cover plate 8 is supported by a sliding surface 21, which is an inner wall surface of the cover plate 8, and can be moved only in a direction in which it can be fitted into and removed from the ring groove 6 by rotating the turning lever 13. (See Figure 3).

Reference numerals 14 and 15 denote inclined portions formed at the opening of the engagement hole 12 (on the insertion side of the rotary lever 13) and the tip of the rotary lever 13, respectively; 16 is a stud bolt serving as the pivot of the rotary lever 13; and 17 . 18 is an upper and lower locking device for locking the engaging device 19 of the rotating lever 13, and 20 is a grip portion of the rotating lever 13.

Therefore, in order to release the fitting between the ejector plate 1 and the drawbar 4 and remove the ejector plate 1, rotate the rotating lever 13 clockwise to remove the locking member 10.
When the ejector plate 1 is moved upward, the engagement between the locking member 10 and the drawbar 4, that is, the ring groove 6 of the adapter 5 is released, and the ejector plate 1 can be easily removed (see the two-dot chain line in FIG. 2).

At this time, the inclined portions 14 and 15 are respectively
The lower surface of the tip of the engagement tool 19 contacts the upper surface of the engagement hole 12.
is locked by the lower locking tool 18.

In addition, in order to attach another ejector plate 1 when replacing the mold, the tip of the drawbar 4 is inserted into the drawer insertion hole 7 of the ejector plate 1 through the through hole 9 of the cover plate 8, and rotated. The engagement between the engagement tool 19 of the lever 13 and the lower locking tool 18 is released, and then the locking member 10 is moved downward by rotating the rotating lever 13 in the counterclockwise direction. 10 is engaged with the ring groove 6 of the adapter 5, and the engagement tool 19 of the rotating lever 13 is locked with the upper locking tool 17 (see solid line in FIG. 2).

As a result, the ejector plate 1 cannot be removed from the drawbar 4.

In the present invention, as described above, a drawbar is fitted into an ejector plate and a cover plate, and the cover plate is inserted into a ring groove formed on the outer periphery of the end of the drawbar.
Since the drawbar is attached to the ejector plate by fitting a locking member that can move only in the direction in which it can be fitted and removed into the ring groove, the drawbar and ejector plate can be easily attached and detached without applying excessive force. It can be used reliably and has a long lifespan.

Moreover, it can be operated from the outside using a control lever, and has various effects such as excellent workability and safety.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a sectional front view of the drawbar mounting device, FIG. 2 is a partially sectional side view of the same, and FIG. 3 is taken along line III-III in FIG. 1. The end view and FIG. 4 are schematic configuration diagrams showing a conventional example. 1... Ejector plate, 2... Mold, 3... Mold mounting board, 4... Drawbar 15... Adapter, 6...Ring groove, 7...Drawbar insertion hole, 8...Cover plate, 10...Lock member, 13...
...Rotating Renoku-

Claims (1)

[Scope of utility model registration request] a drawbar connected to a cylinder and having a ring groove formed on the outer periphery of its end; a locking member having a forked portion that can be fitted into and removed from the ring groove; an ejector plate having a drawbar insertion hole drilled therein; and the ejector plate. a cover plate that is fixed to a rear surface and supports the lock member so as to be movable only in a direction that allows the lock member to be inserted into and removed from the ring groove; and an operation that is connected to the lock member and moves the lock member along the cover plate. 1. A drawbar mounting device for a die-casting machine, comprising a lever, and the drawbar is mounted to the ejector plate by fitting the drawbar into the ejector plate and then fitting the locking member into a ring groove.