JP2006315036A - Apparatus for releasing flask of sand mold with flask already poured with molten metal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for releasing a flask of a sand mold with the flask already poured with molten metal, wherein the output can be reduced when taking out the mold from the flask and also, the cleanliness on the inner surface of the flask can be improved. <P>SOLUTION: In the apparatus for releasing the flask in the sand mold with the flask already poured with the molten metal, a product and the upper/lower molds are taken out from the upper part toward the lower part, from the upper/lower molds with the upper/lower flasks poured with the molten metal after matching the molds, and a punch-head arranged at the upper part of the upper/lower molds with the upper/lower flasks, and a punch-head ascending/descending means for ascending/descending the punch-head are included, wherein a pushing-out member is fitted to the lower end center of the punch-head. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a demolition apparatus for a sand mold with a poured frame.

  Conventionally, in a fresh sand mold with a frame, an apparatus for extracting a poured mold from a cast frame has been publicly known (see, for example, Patent Document 1).

Japanese Utility Model Publication 59-1460 (1st page, Fig. 1)

As a recent trend of castings produced with green sand molds, casting materials are required to be thinner and more accurate. Therefore, molds are required to have high strength, and molding machines are required to mold high-strength molds. Progressing. When such a high-strength mold is extracted from the casting frame, there is a problem that a high-output mold extracting device is required. Moreover, it is necessary to improve the cleanability of the inner surface of the casting frame.

  The present invention has been made in view of the above problems, and can provide a poured framed sand that can reduce the output when the mold is extracted from the cast frame and can improve the cleanability of the inner surface of the cast frame. It is an object of the present invention to provide a mold releasing apparatus.

  In order to achieve the above object, a demolding apparatus for a sand mold with a poured frame according to the present invention extracts products and upper and lower molds from above and below from an upper and lower mold with an upper and lower frame that have been poured in a mold. An unpacking device for a sand mold with a poured frame, comprising: a punch head disposed above the upper and lower molds with upper and lower frames; and a punch head lifting / lowering means for lifting and lowering the punch head. An extrusion member is attached to the center of the lower end of the head.

  In addition, the unsealing device for the sand mold with a poured frame in the present invention is a sand mold with a poured frame that draws the product and the upper and lower molds downward from the upper and lower molds with the upper and lower frames that have been combined and poured. A punch head disposed above the upper and lower molds with the upper and lower frames, and a punch head lifting and lowering means for lifting and lowering the punch head. The guide members are attached at intervals.

  Further, the unsealing device for the sand mold with the poured frame in the present invention is a sand mold with a poured frame for extracting the product and the upper and lower molds from above and below from the upper and lower molds having the upper and lower frames that have been combined and poured. A punch head disposed above the upper and lower molds with the upper and lower frames, and a punch head lifting and lowering means for lifting and lowering the punch head, and an extrusion member at the center of the lower end of the punch head And a plurality of guide members are attached to the periphery of the lower end of the punch head at intervals.

  The present invention relates to a demolding device for a sand mold with a poured frame, which extracts a product and an upper and lower mold from the upper and lower molds with the upper and lower frames that have been poured in accordance with the mold, from the upper side to the lower side. A punch head disposed above the mold; and a punch head lifting / lowering means for lifting and lowering the punch head. The push member is attached to the center of the lower end of the punch head. Since the plurality of guide members are attached at intervals, there are various effects such as the ability to reduce the output when extracting the mold from the casting frame and the improvement of the cleanability of the inner surface of the casting frame.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. An upper mold Ua and a lower mold Sa described later are green sand molds in the embodiment of the present invention. In FIG. 1, the upper and lower molds M with the upper and lower frames poured into the mold are poured into the mold extraction station N by the roller conveyor 1 (see FIG. 2) as a conveying means. A punch head 2 is disposed above the upper and lower molds M with the upper and lower frames, and a plurality of scrapers 3 and 3 for cleaning the inner surfaces of the upper frame Ub and the lower frame Sb at the upper peripheral edge of the punch head 2. Are attached via a pair of rubber springs 8 and 8 spaced on the left and right.

  A punch head lifting / lowering cylinder 4 as a punch head lifting / lowering means for lifting the punch head 2 is disposed above the punch head 2, and the punch head lifting / lowering cylinder 4 is mounted downward on a frame 5. Yes. The tip of the punch head lifting / lowering cylinder 4 is connected to the punch head 2. Guide rods 6 and 6 are disposed on both outer sides of the punch head elevating cylinder 4, and the guide rods 6 and 6 can slide up and down in holders 7 and 7 attached to the frame 5. It is penetrated. The tips of the guide rods 6 and 6 are connected to the punch head 2.

  An extrusion member 9 is attached to the center of the lower end of the punch head 2, and a plurality of guide members 10 and 10 are attached to the periphery of the lower end of the punch head 2 at intervals. Note that the outer surface tips of the guide members 10 and 10 are inclined toward the inside.

  The operation of the apparatus configured as described above will be described. The upper and lower frame-equipped upper and lower molds M, which have been mold-matched and poured, are carried into a mold extraction station N (see FIG. 1) by a roller conveyor 1 (see FIG. 2) as a conveying means. Next, the punch head elevating cylinder 4 is extended to lower the punch head 2, the pushing member 9, and the guide members 10, 10 so that the product W, the upper mold Ua, and the lower mold Sa are moved from the upper and lower molds M with the upper and lower frames. Is extracted downward from above (see FIG. 3). The extracted product W and the upper and lower molds Ua and Sa are received by a mold receiving means (for example, a vibrating conveyor) (not shown).

  Next, the punch head 2, the pushing member 9, and the guide members 10, 10 are raised by contracting the punch head lifting cylinder 4. Thereafter, the emptied upper and lower frames Ub and Sb are carried out from the mold extraction station N by the roller conveyor 1. As the punch head 2 moves up and down, the inner surfaces of the upper and lower frames Ub and Sb are cleaned by the scrapers 3 and 3. The extracted product W and the upper and lower molds Ua and Sa are sent to the next process (not shown) by the mold receiving means.

  In the present invention, an extrusion member 9 is attached to the center of the lower end of the punch head 2. As a result, the upper and lower molds Ua and Sa are pulled out while collapsing the upper and lower molds Ua and Sa with the push-out member 9, and therefore the output at the time of the extraction of the actuator for pulling out, that is, the punch head elevating cylinder 4 is reduced. Can do. For this reason, it is possible to achieve compactness and labor saving of devices, actuators, and the like. For example, if the bottom surface area of the extruding member 9 is about 1/3 of the bottom surface area of the punch head 2, the output at the time of extraction can be reduced to about 1/3.

  Usually, when the gap between the inner surfaces of the upper and lower frames Ub and Sb and the lower end side surface of the punch head 2 is large, the rubber springs 8 and 8 may be damaged by losing the cleaning resistance of the high-strength upper and lower molds Ua and Sa. If the gap between the inner surfaces of the upper and lower frames Ub and Sb and the lower end side surface of the punch head 2 is reduced in order to prevent the rubber springs 8 and 8 from being damaged, the punch head 2 and the upper frame Ub may collide during the extraction. is there. However, in the present invention, a plurality of guide members 10 and 10 are attached to the periphery of the lower end of the punch head 2 at intervals. As a result, the punch head 2 is guided by the guide members 10 and 10 and the position thereof is corrected and lowered. Therefore, even if the gap between the inner surfaces of the upper and lower frames Ub and Sb and the lower end side surface of the punch head 2 is reduced, The upper frame Ub does not collide. For this reason, since the gap between the inner surfaces of the upper and lower frames Ub and Sb and the lower end side surface of the punch head 2 can be minimized, sand adhesion on the inner surfaces of the upper and lower frames Ub and Sb can be reduced, and the inner surfaces of the upper and lower frames Ub and Sb can be cleaned. Can be improved. Along with this, the work environment can be improved.

It is a front view which shows embodiment of this invention. It is an AA arrow line view in FIG. It is a front view which shows the state which extracted the product, the upper mold, and the lower mold from the upper part to the lower part from the upper and lower molds with the upper and lower frames.

Explanation of symbols

2 Punch head 4 Punch head lifting / lowering means 9 Extruding member 10 Guide member M Up / down mold Ub with upper / lower frame Upper frame Sb Lower frame Ua Upper mold Sa Lower mold W Product

Claims (3)

A demolding device for a sand mold with a poured frame, which draws the product and the upper and lower molds from above and below from the upper and lower molds with the upper and lower frames that have been mold-matched and poured. A punched sand mold with a poured frame, comprising: a punch head disposed; and a punch head lifting / lowering means for lifting and lowering the punch head, wherein an extrusion member is attached to the center of the lower end of the punch head. Frame device. A demolding device for a sand mold with a poured frame, which draws the product and the upper and lower molds from above and below from the upper and lower molds with the upper and lower frames that have been mold-matched and poured. A poured hot water characterized by comprising: a punch head disposed; and a punch head lifting / lowering means for lifting and lowering the punch head, wherein a plurality of guide members are attached to the periphery of the lower end of the punch head at intervals. A demolding device for sand molds with frames. A demolding device for a sand mold with a poured frame, which draws the product and the upper and lower molds from above and below from the upper and lower molds with the upper and lower frames that have been mold-matched and poured. And a punch head lifting / lowering means for moving the punch head up and down. A push member is attached to the center of the lower end of the punch head, and a plurality of guide members are provided at the lower edge of the punch head. A demolding device for a sand mold with a poured frame, characterized by being mounted at intervals.