Molding machine

Abstract

The disclosed molding machine defines upper and lower mold cavities while cope and drag flasks 12,13, having a match plate 11 sandwiched therebetween, are rotated from their horizontal positions to their vertical positions. An upper squeeze member 14 is insertable into the cope flask 12 with its pressure-applying plane being opposed to the upper face of the match plate 11. The pressure-applying plane defines an upper mold cavity together with the upper face of the match plate 11 and the cope flask 12. A pivoting frame 23 supports the cope and drag flasks 12,13, having a match plate 11 sandwiched therebetween, and the upper squeeze member 14, such that they rotate in unison between a horizontal position, in which the pressure-applying plane of the upper squeeze member 14 is oriented vertically downward to a vertical position in which the pressure-applying plane is oriented horizontally. A fixed, vertical, filling frame abuts the drag flask 13 when the cope and drag flasks 12,13, having the match plate 11 sandwiched therebetween, are in the vertical position. A lower squeeze member 16 has a pressure-applying plane that is oriented horizontally, and is insertable into the filling frame and the abutted drag flask 13. The pressure-applying plane of the lower squeeze member 16 defines a lower mold cavity together with the lower face of the match plate 11, the drag flask 13, and the filling frame 15.

Description

technical field

[0001] The invention relates to a molding device, in particular to a device for simultaneously molding upper and lower boxless molds. Background technique

[0002] In the tankless molding method, an attempt was made to improve work efficiency by employing a well-known tankless molding device. For example, earlier Japanese Patent Publication No. 04-66245 proposes to combine a well-known tankless molding device with a pattern changing device. The pattern is changed mechanically and automatically, rather than manually, by replacing a used pattern template used to form the mold in the molding device with a new pattern template.

[0003] However, the tankless molding devices of the above publications are well known and have also been used in conventional tankless molding methods in which the changing of pattern templates is manual. Therefore, this disclosure is consistent with the traditional boxless molding method of manually changing pattern templates in the p...

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