JP2005074517A - Mold manufacturing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure the freedom of setting a direct blowing port at a necessary place of a cavity in a vertically split mating die arrangement of a mold manufacturing machine. <P>SOLUTION: A blow head is provided so as to be freely pressed against a lateral back face of the mating die having a vertically split face. This arrangement enables molding sand to be blown into the cavity in a wide and optional range, unlike filling limited by flowing the sand from the vertical split face only. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a mold making machine in which mold sands such as thermosetting, gas curable, and self-hardening are filled in a mold, and after curing, the mold is taken out as a mold.

In a mold making machine equipped with a horizontal split surface mating die, the arrangement area of the air inlet can be made wider than that of the mating die, and the degree of freedom of freely providing the air inlet to the appropriate position of the cavity is high, Since the upper mold and the lower mold are horizontally opened and closed in the vertical direction, when blowing mold sand, a blow head, sand hopper, etc. are used to blow sand above the upper mold. Therefore, a structure that supports them with a machine column or an upper board is required.
As a result, the height of the molding machine becomes vertically long, and not only is the building height required, but it also involves high-level work for installation and maintenance work, and a bulky machine also exists in terms of the factory environment. As a result, there are things that cannot be overlooked from the viewpoint of safety and hygiene of factories, where the field of view is obstructed and the prospects are worsened, giving a sense of pressure and intimidation.

Problems to be solved by the present invention

  In the vertical split surface mating type configuration, a blow head is placed in parallel on the back of one side of the mating type so as not to be restricted by the arrangement of the blowing port, ensuring the flexibility to directly set the blowing port at the required part of the cavity. However, it is possible to avoid limitations and limitations on cavity setting, inefficiency in filling performance, etc. due to blowing restricted only from the mating surface of the mating mold, which has been seen in conventional molding machines in the vertical split surface method. On the other hand, since the sand supply mechanism is not stacked, the machine height can be dramatically reduced, downsizing can be achieved, and the factory environment can be improved.

One embodiment of the following invention will be described with reference to FIGS.
In the figure, 1 is a machine base 2 is a mating type (fixed), 3 is a mating type (movable), and is detachably attached to the die plates 4 and 5, respectively. Through the vise cylinder 8.
The mating die 3 can be reversed downward.
9 is a blow head, and sand is replenished from the sand pressure feed tank 10, and 11 is a blow head transverse cylinder.
12 is a mold take-out conveyor, 13 is a mold sand hopper.
Reference numeral 14 denotes an extrusion plate with an extrusion pin 15 that swings with an extrusion cylinder 16 when necessary.

The operation of the above configuration will be described below.
The matching molds 2 and 3 are matched by the operation of the vise cylinder 8 and the blow head 9 is pressure-bonded to the back of one side of the matching mold 2 by the operation of the blow head traversing cylinder 11 and filled with mold sand. After the mold sand is solidified, the blow head 9 is uncompressed and the vise cylinder 8 is reversely operated to open the mating molds 2 and 3. At this time, the mold is held by the mating mold (movable) 3 by a known means (not shown). ing.
Next, the mating die 3 is inverted downward and dropped onto the conveyor unloader.
In the present embodiment, the sand supply to the blow head 9 is performed by the pressure feed tank 10, but it is also possible to arbitrarily supply sand from the opening above the blow head 9 as shown in FIG.

The invention's effect

  As described above, the mold making machine of the present invention is a vertical split surface type mating die, which is used to fill the mold sand only from the split surface (matching surface) of the mating die by a blow head arranged in parallel on one side of the mating die. Without being limited, it is possible to freely select and arrange positions that require a wide range of inlets from the back of one side, so there is no blind spot in the cavity setting and the number of inlets can be increased, and the inlets are not limited , Increase the packing density in the cavity, prevent the generation of defective molds, and increase productivity.

  The front view of the mold making machine which shows one Example of this invention   仝 Plan view   一部 Partial sectional view showing another example of blow head in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Machine 15 Extrusion pin 2 Fixed side alignment type 16 Extrusion plate cylinder 3 Movable side alignment type 4 Fixed side die plate 5 Movable side die plate 6 Guide bar 7 Guide bar 8 Vise cylinder 9 Blow head 10 Sand pressure feed tank 11 Blow head traverse Cylinder 12 Mold takeout conveyor 13 Mold sand hopper 14 Extrusion plate

Claims (1)

A combination mold with a blow-off port on the back of one side and a vertically split surface that can be opened and closed is placed on the machine base, and a blow head for crimping is mounted on the back of one side of the combination mold. Mold making machine.

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