JP2015150588A - Greensand molding type facility metal flask - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a greensand molding type facility metal flask eliminating the whole interchange of a metal flask and the additional work of a transfer level of a transfer roller, even in the case where a metal flask transportation roller running face is worn.SOLUTION: A transporting roller running face 2, which is formed vertically of the two metal flask transfer ends, of a greensand type facility metal flask composed of an upper frame 1a and a lower frame 1b, is made to have a replaceable liner applied structure, so that only a liner 4 can be replaced when the wear occurs. The liner 4 is preferably attached to the transporting roller running face 2 by a bolt 6 having a pitch different from the pitch of a roller 3 of the metal flask transportation facility.

Description

  The present invention relates to improvement of a metal frame for fresh sand molding equipment used in an automatic molding line or the like.

  In the green sand molding method, a mold is formed using green sand inside a metal frame for a green sand molding facility composed of an upper frame and a lower frame, and casting is performed by pouring molten metal into the mold. For example, as shown in Patent Document 1, this metal frame for raw sand molding equipment is moved on a roller conveyor, the upper mold is reversed during conveyance, the upper and lower molds are aligned, and the pouring machine is poured by a pouring machine. Is done.

  In FIG. 5, the metal frame for fresh sand molding facilities of patent document 1 is shown. As shown in the drawing, in the conventional metal frame 101 for fresh sand molding equipment, since the metal frame conveying roller running surface 102 is integrated with the main body of the metal frame, when the metal frame conveying roller running surface 102 is worn, The entire frame must be replaced, or the metal frame transfer roller running surface 102 is additionally processed, and the transfer level of the transfer roller 103 needs to be changed in accordance with the additional processing size. There was a problem that occurred.

JP 2010-69519 A

  Therefore, the object of the present invention is to solve the above-mentioned conventional problems, and even when the running surface of the metal frame conveying roller is worn, it is necessary to replace the entire metal frame or to additionally process the conveying level of the conveying roller. It is to provide a metal frame for lost sand molding equipment.

  In order to solve the above-mentioned problems, a metal frame for fresh sand molding equipment according to the present invention is a metal frame for fresh sand molding equipment comprising an upper frame and a lower frame. The transport roller running surfaces formed on the upper and lower sides of the sheet have a replaceable liner bonding structure.

  According to a second aspect of the present invention, it is preferable that the liner attaching structure is such that the liner is attached to the conveyance roller running surface with bolts having a pitch different from the roller pitch of the metal frame conveyance facility.

  The metal frame for fresh sand molding equipment of the present invention travels on a roller conveyor of a metal frame transport facility, and it is inevitable that the roller travel surface of the metal frame transport will wear due to long-term use. However, in the present invention, since the transfer roller running surface formed on the upper and lower ends of the upper frame and the lower frame in the metal frame conveyance direction is replaced with a liner-attached structure, only the liner needs to be replaced. There is no need to replace the entire frame. In addition, since additional processing of the transport level of the transport roller is not necessary, significant cost reduction can be achieved. The upper frame and the lower frame are conveyed while being turned upside down. However, since the upper and lower conveying roller running surfaces have a liner-attached structure, it is possible to cope with any wear of the upper and lower surfaces.

  In the present invention, the liner is attached with bolts through the counterbored holes from the conveying roller travel surface side, but these counterbored holes are likely to be locally worn by the roller travel compared to other parts. However, as in the second aspect of the invention, if the liner is mounted on the transport roller running surface with bolts having a pitch different from the roller pitch of the metal frame transport facility, one roller comes to the local wear portion. However, the rollers on both sides do not come to the local wear part, and the conveyance level can be kept constant.

It is a front view of the metal frame for fresh sand molding equipment of an embodiment. It is side surface sectional drawing of the metal frame for fresh sand molding equipment of embodiment. It is a top view of an upper frame. It is side surface sectional drawing of a lower frame. It is side surface sectional drawing of the conventional metal frame for fresh sand molding equipment.

Embodiments of the present invention will be described below.
As shown in FIG. 1, the metal frame 1 for fresh sand molding equipment according to the present invention comprises an upper frame 1a and a lower frame 1b, and a mold (not shown) is formed in a cavity formed inside them. Is. The fresh sand molding facility metal frame 1 composed of the upper frame 1a and the lower frame 1b is conveyed in the left-right direction in FIG. 1 on a roller conveyor of the metal frame conveyance facility. At that time, the conveyance roller running surface 2 comes into contact with the conveyance roller 3, and as shown in FIGS. 2 and 4, the upper surface of the frame body 9 integrally formed on the outer side of the metal frame main body. The lower surface is a transfer roller running surface 2.

  The raw sand molding equipment metal frame 1 needs to be transported with both the upper frame 1a and the lower frame 1b turned upside down, so that the transport roller running surfaces 2 are formed above and below the upper frame 1a and the lower frame 1b, respectively. . FIG. 1 shows a state in which the conveying roller traveling surface 2 on the lower side of the lower frame 1 b is traveling on the conveying roller 3.

  These conveying roller running surfaces 2 have a replaceable liner pasting structure. Specifically, the liner 4 is attached to the frame-like body 9 by a large number of bolts 6, and only the liner 4 can be easily replaced when worn. The liner 4 is an elongated plate-like body extending over the entire length in the conveyance direction of the metal frame, and the material thereof is preferably made of metal having excellent wear resistance. However, the material of the liner 4 is not necessarily limited to metal, and may be made of ceramic such as alumina or zirconia.

  Counterbore holes 5 are formed in the liner 4 at predetermined intervals, and are attached to the surface of the frame-like body 9 by bolts 6 from the roller running surface side. As shown in FIG. 4, the head of the bolt 6 should not protrude from the surface of the liner 4.

  As shown in FIGS. 1 and 2, in the present invention, the surface of the liner 4 attached to the conveying roller traveling surface 2 travels while being in contact with the conveying roller 3. For this reason, when wear occurs, it is only necessary to replace the liner 4, and it is not necessary to replace the entire metal frame as in the conventional case, so that a significant cost reduction can be achieved. Further, there is no need to additionally process the metal frame conveying roller running surface.

  Compared with other portions of the liner 4, local wear is likely to occur in the counterbore hole 5 described above. However, if the pitch of the bolts 6 for attaching the liner 4 is different from the pitch of the conveying rollers 3 of the metal frame conveying facility, the conveying roller 3 at one location comes to the local wear portion as shown in FIG. However, the conveying rollers 3 on both sides do not come to the local wear portion at the same time. For this reason, the metal frame does not fall into the concave portion of the local wear portion of the liner 4 and can be smoothly transported while keeping the transport level constant, so that the replacement cycle of the liner 4 can be lengthened. Along with this, vibration during conveyance can also be suppressed, which is preferable.

  As shown in FIG. 1, in this embodiment, a metal frame positioning liner 7 is provided on the side surfaces of the central portions of the upper frame 1a and the lower frame 1b. These metal frame positioning liners 7 are also provided with counterbore holes as shown in FIG. 3, and are fixed to the side surfaces of the frame body 9 by bolts 10.

  As shown in FIG. 2, these metal frame positioning liners 7 are positioned when the metal frame positioning equipment 8 provided on the conveying device side positions the metal frame for fresh sand molding equipment that has been conveyed. It is provided at a site where the device 8 comes into contact, and can be easily replaced when worn.

  As described above, according to the present invention, even when the running surface of the roller for conveying the metal frame is worn, it is not necessary to replace the entire metal frame or to additionally process the conveyance level of the conveying roller. Cost reduction.

DESCRIPTION OF SYMBOLS 1 Metal frame for raw sand molding facilities 1a Upper frame 1b Lower frame 2 Rolling surface for conveyance 3 Roller for conveyance 4 Liner 5 Counterbored hole 6 Bolt 7 Liner for metal frame positioning 8 Metal frame positioning device 9 Frame body 10 Bolt

Claims (2)

  In the fresh sand molding equipment metal frame consisting of an upper frame and a lower frame, the transfer roller running surfaces formed on the upper and lower ends of the metal frame conveyance direction of the upper frame and the lower frame have a replaceable liner pasting structure. A metal frame for green sand molding equipment characterized by   2. The green sand molding facility gold according to claim 1, wherein the liner attaching structure is a liner attached to a transport roller running surface by a bolt having a pitch different from a roller pitch of the metal frame transport facility. frame.

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