JP5387986B2 - Casting line and sand removal method - Google Patents

Description

  The present invention relates to a casting line and a sand removal method provided with a sand removal device that separates foundry sand and foundry material from a mold in a casting cooling process, and more specifically, one using a container with a lattice. This is related to the technique of casting sand removal.

  Conventionally, as a method for separating the foundry sand and the cast product in the casting cooling step, a method in which a poured mold is poured into the drum and separated by rotation, vibration and water spray (see Patent Document 1), There has been a method (see Patent Document 2) in which a mold to be conveyed on a casting line is placed on a vibrator and disassembled and separated by vibration.

JP-A-5-0138332 JP 2003-010962 A

  However, the method and apparatus described in Patent Document 1 have a problem in that it is difficult to individually manage each mold in the subsequent process because a large number of molds cannot be placed in the drum and sand can be removed for each mold. It was.

  In the method and apparatus described in Patent Document 2, a casting mold containing a casting material punched up from a casting frame (casting frame) is transferred to a vibrator by a pusher or a gripping means, and sand is dropped by vibration of the vibrator. Has been. Next, the casting material from which sand has been removed and the foundry sand has been separated is pushed out by a pusher and transferred to a cooling basket. Here, since it is punched up one by one from the casting frame, it looks as if management for each mold can be performed.

  However, the sand is dropped by the vibration of the vibrator and transferred to the cooling basket. For some reason, the mold is left behind in the vibrator for some reason. May be transferred. Therefore, there has been a problem that individual management for each mold cannot be performed in a later process.

  Therefore, in view of the above circumstances, the present invention provides a casting line capable of reliably performing individual management for each mold even after sand removal by performing sand removal for each mold in the mold after pouring. And to provide a sand removal method.

  The casting line of the present invention made to solve the above problems is a casting line that transports a poured mold, and includes a sand removal device on a cooling line that transports the casting mold. Characterized in that it comprises: a container with a lattice that is fed and conveyed one by one; and a shakeout machine that vibrates the entire container with the lattice without separating the mold from the container with the lattice to separate the material from the foundry sand. To do.

  As in claim 2, it is preferable to arrange one or a plurality of shake-out machines with a lifting function immediately below the roller conveyor that conveys the latticed container. Further, it is preferable to provide a mold crushing comb blade capable of moving up and down at the sand removal position above the shakeout machine. Further, as in claim 4, the container with a lattice can be a lattice pallet, and as in claim 5, the container with a lattice can be a receiving box with a bottom lattice. Further, as in claim 6, it is preferable to provide a partition that can be moved up and down to prevent the material from protruding from the side surface of the lattice pallet and falling.

  Furthermore, the sand dropping method of the present invention includes a step in which poured molds are poured one by one into a container with a lattice and conveyed on a roller conveyor, and a shakeout machine is lifted from below the roller conveyor to remove the container with a lattice And transferring the sand from the conveyor onto a shake-out machine to remove sand.

  According to the present invention, the mold is not transferred from the container with the lattice, and the container with the lattice is vibrated to separate the material from the foundry sand. Therefore, the sand removal is performed by removing the sand for each mold. Even after it is done, individual management for each mold can be performed reliably.

It is a whole front view including the single sand removal device using a lattice pallet (surface plate). It is a whole sectional view including one piece cast sand dropping device using a lattice pallet (surface plate). It is a front view explaining the sand dropping process using a lattice pallet (surface plate). It is sectional drawing explaining the sand dropping process using a lattice pallet (surface plate). It is a front view explaining the sand dropping process using a lattice pallet (surface plate). It is sectional drawing explaining the sand dropping process using a lattice pallet (surface plate). It is a front view explaining the sand dropping process using a lattice pallet (surface plate). It is sectional drawing explaining the sand dropping process using a lattice pallet (surface plate). It is a top view of a lattice pallet (surface plate). It is a front view of a lattice pallet (surface plate). It is sectional drawing of a lattice pallet (surface plate). It is a front view of the single sand removal apparatus using a receiving box with a bottom grid. It is sectional drawing of the single sand removal apparatus using a receiving box with a bottom grid. It is a top view of a receiving box with a bottom lattice. It is a front view of a receiving box with a bottom grid. It is sectional drawing of a receiving box with a bottom lattice.

Embodiments of the present invention will be described below.
FIG. 1 and FIG. 2 are general views of a cooling line for conveying a poured mold in a casting line, wherein 1 is a container with a lattice, and 6 is a roller conveyor for conveying the container 1 with a lattice. In this embodiment, the latticed container 1 is a lattice pallet (surface plate) 1a. As shown in FIG. 9, the lattice pallet 1a is formed by forming a large number of sand-dropping through holes 1c on a rectangular pallet. In this embodiment, the through holes 1c are formed in parallel.

  Reference numeral 2 denotes a poured mold, which is put on a lattice pallet 1a one mold at a time from a demolition device (not shown). The lattice pallet 1a on which the poured mold 2 is placed is conveyed on the roller conveyor 6 in the right direction indicated by an arrow in FIG.

  One or a plurality of shake-out machines 3 having an elevating function 7 are arranged immediately below the roller conveyor 6 that conveys the container 1 with a lattice. In this embodiment, three shakeout machines 3 are arranged at equal intervals. If a plurality of shakeout machines 3 are installed in this way, it is possible to ensure the sand removal time without being affected by the time cycle even for a line with a short time cycle.

  3 and 4 show a state in which the shakeout machine 3 is in the lowered position, and FIGS. 5 and 6 show a state in which the shakeout machine 3 has been raised by the lifting function 7. As shown in FIG. 4, when the shake-out machine 3 is in the lowered position, the lattice pallet 1a is supported on the roller conveyor 6, but when the shake-out machine 3 is in the raised position shown in FIG. Is slightly lifted from the roller conveyor 6 by the upper projection. For this reason, the lattice pallet 1a on which the poured mold 2 is placed is placed on the shakeout machine 3 as it is, and the material 4 and the foundry sand 5 are separated by vibration. The foundry sand 5 falls downward from the through hole 1c for dropping sand, and the material 4 is conveyed to the next process by the roller conveyor 6.

  As described above, in the present invention, the mold is not transferred from the latticed container 1 and is vibrated together with the latticed container 1 to separate the material 4 and the foundry sand 5. Even after sand removal, there is an advantage that individual management for each mold can be reliably performed.

  However, when there is a mixture of unpoured molds with poor sand removal properties on the roller conveyor 6, there is a possibility that the foundry sand 5 cannot be crushed even if vibration is applied by the shake-out machine 3. Therefore, as shown in FIGS. 7 and 8, a mold crushing comb blade 8 that can be moved up and down is provided at the sand removal position at the top of the shakeout machine 3. The mold crushing comb blade 8 is lifted and lowered by the upper lifting mechanism 8a to reliably crush a mold such as an unpoured mold that cannot be crushed by the shake-out machine 3.

  Moreover, when using such a lattice pallet 1a as the container 1 with a lattice, the raw material 4 and the foundry sand 5 may protrude or fall from the side surface of the lattice pallet 1a. Therefore, as shown in FIGS. 5 and 6, it is preferable to provide a partition 9 that can be moved up and down by the lifting mechanism 9 a to prevent the material 4 and the foundry sand 5 from protruding or falling. The partition 9 that can be moved up and down is lowered on the shakeout machine 3 after the lattice pallet (surface plate) 1a before sand removal is carried in and before the shakeout machine 3 is raised for sand removal. Further, after dropping sand, the shakeout machine 3 is lowered and then raised as shown in FIGS.

  12 to 16 show an embodiment in which a receiving box 1b with a bottom grid is used as the container 1 with a grid. The bottom-grid-equipped receiving box 1b has a vertical wall around it, and the bottom surface has a lattice shape similar to the lattice pallet 1a. In the case of the lattice pallet (surface plate) 1a method, there is an advantage that the cooling effect of the material 4 is great, but from the lattice pallet 1a during the extruding, dropping, and conveying of the material 4 during sand removal and the casting sand 5 There is a disadvantage that there are many sand spills. On the other hand, in the case of the receiving box 1b system with a bottom grid, there is a disadvantage that the cooling effect of the material 4 is small, but the bottom grid of the raw material 4 during sand dropping, the casting sand 5 protruding, falling, and being conveyed. There is an advantage that sand spillage from the attached receiving box 1b can be reduced.

  Therefore, when using the receiving box 1b with the bottom grid, the partition 9 that can be moved up and down is unnecessary, but the mold crushing comb blade 8 that can be moved up and down is provided in the same manner as when using the grid pallet 1a. It is preferable to reliably crush a mold that cannot be crushed.

  As described above, according to the present invention, it is possible to drop sand by one mold by putting one mold into one receiving box and vibrating the receiving box by the shake-out machine 3 to remove sand. Even after separation of the foundry sand and the cast material, individual management for each mold can be performed. In addition, since the shakeout machine 3 is arranged directly under the roller conveyor 6, it is easy to hold a plurality of lifting type shakeout machines, and even for a line with a short time cycle, the sand is not affected by the time cycle. The drop time can be secured.

1 Container with lattice 1a Lattice pallet (surface plate)
1b Receiving box with bottom grid 1c Through hole 2 Mold 3 Shakeout machine 4 Material 5 Casting sand 6 Roller conveyor 7 Elevating function 8 Comb blade for crushing mold that can be raised and lowered 8a Elevating mechanism 9 Elevating mechanism 9a Elevating mechanism

Claims (7)

A casting line that transports a poured mold, and includes a sand removal device on a cooling line that transports the mold,
A latticed container in which poured molds are poured and conveyed one by one;
A casting line comprising a shake-out machine that vibrates the entire container with the lattice without separating the mold from the container with the lattice to separate the material and the foundry sand.   2. The casting line according to claim 1, wherein one or a plurality of shake-out machines with an elevating function are arranged immediately below a roller conveyor that conveys a container with a lattice.   2. The casting line according to claim 1, wherein a mold crushing blade capable of moving up and down is provided at a sand removal position above the shakeout machine.   2. The casting line according to claim 1, wherein the container with a lattice is a lattice pallet.   2. The casting line according to claim 1, wherein the container with a lattice is a receiving box with a bottom lattice.   5. The casting line according to claim 4, further comprising a partition that can be moved up and down to prevent the material from protruding and falling from the side of the lattice pallet. A process in which poured molds are poured one by one into a container with a lattice and conveyed on a roller conveyor;
The process of raising the shakeout machine from below the roller conveyor, transferring the latticed container from the roller conveyor onto the shakeout machine, and removing sand,
Sand removal method characterized by including.

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