JP5257929B2 - Casting product cooling device - Google Patents

Description

  The present invention relates to an apparatus for cooling a cast product removed from a casting machine.

  In the conventional casting process, a very high temperature (about 400 ° C.) cast product taken out from the casting machine is cooled by natural heat dissipation. However, natural heat dissipation takes time for cooling and requires a large space for accommodating the casting being cooled.

  For example, the transport device disclosed in Patent Document 1 is provided with a duct on a conveyor that transports a cast product including a sand core taken out from a casting machine to a chipping (sanding) device, and cool air from the duct is cast into the cast product. Cooling by spraying on.

JP 7-171669 A

  However, since the high-temperature cast product is conveyed in an uncovered manner in the conveying device of Patent Document 1, the surroundings are extremely hot. In particular, around the duct, there is a problem that the ambient temperature becomes high because high-temperature wind in contact with the cast product diffuses to the surroundings. Further, in the case of a cast product including a core, the burning odor of the resin of the core spreads to the periphery, causing the surrounding environment to deteriorate.

  An object of the present invention is to provide a cast product cooling device capable of cooling a cast product taken out from the cast product without deteriorating the surrounding environment.

In order to solve the above-mentioned problems, the present invention provides a sealed space for accommodating a cast product taken out from a casting machine, a cooling means for cooling the cast product in the sealed space, and a suction for sucking air in the sealed space. And a casting product cooling device that includes a conveying table that conveys the cast product, and a hood portion that is provided above the conveying table and that opens at the bottom, and that forms the sealed space by the conveying table and the hood portion. provide.

  Thus, since the cooling device of the present invention cools the cast product in the sealed space, the heat of the cast product does not leak to the outside, and the surrounding temperature rise can be suppressed. Moreover, even if the casting includes a core, the odor of burning resin does not leak to the surroundings, and the surrounding environment can be improved. Furthermore, if the suction means for sucking the air in the sealed space is provided, the hot air and odor emitted from the cast product are sucked by the suction means, so that it is possible to reliably avoid the surrounding temperature rise and the deterioration of the working environment.

  The sealed space can be formed by, for example, a conveyance table that conveys a cast product and a hood portion that is provided above the conveyance table and that opens downward. Thus, an apparatus can be simplified by forming sealed space using the conveyance stand which conveys a casting.

  As described above, according to the cast product cooling device of the present invention, the cast product taken out from the casting machine can be cooled without deteriorating the surrounding environment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The cast product cooling device 1 according to the embodiment of the present invention is for cooling the cast product 10 and is provided adjacent to the casting machine 100 as shown in FIG. The cast product 10 in the illustrated example includes a core 11 made of sand and resin, and a casting part 12 that is low-pressure casted with a metal material such as aluminum. The cast product cooling device 1 includes a pallet 20 as a transport table for placing the cast product 10, a hood portion 30 (sealing means), a blower 40 (cooling means), and a duct 50 (suction means). .

  The pallet 20 is provided so as to be able to move up and down relatively with respect to the hood part 30. In the present embodiment, the hood part 30 is fixed and the pallet 20 is provided so as to be movable up and down. The hood portion 30 includes a substantially rectangular upper surface portion 31 and a side surface portion 32 extending downward from an end portion of the upper surface portion 31, and forms a space having an opening downward therein. A contact member 33 made of a material having heat resistance and elasticity, such as heat resistant rubber, is provided at the lower end of the hood portion 30. The blower 40 is provided inside the hood portion 30 and has a plurality of nozzles. In the example of illustration, it has the nozzle 41a of the perpendicular direction downward, and the nozzle 42b inclined slightly toward the center side toward the casting 10 (refer FIG. 2). The duct 50 is connected to a suction machine (not shown), and is provided through the upper surface portion 31 of the hood portion 30 in the illustrated example.

  Next, a cooling method of the cast product 10 by the cast product cooling device 1 will be described. First, as shown by a dotted line in FIG. 1, the pallet 20 is lowered to a lower position, and the cast product 10 is placed on the pallet 20. At this time, for example, the casting product 10 may be moved onto the pallet 20 with a lifting machine or the like while the pallet 20 is placed at the dotted line position in FIG. 1, or the pallet 20 is slid into the casting machine 100. The cast product 10 may be returned to the position indicated by the dotted line in FIG. Thereafter, the pallet 20 on which the cast product 10 is placed is raised to a position indicated by a solid line in FIG. At this time, the upper surface of the pallet 20 and the abutting member 33 at the lower end portion of the hood portion 30 are in contact with each other, and the sealed space P is formed by the pallet 20 and the hood portion 30. Be contained. Thus, by accommodating the high-temperature casting 10 immediately after casting in the sealed space P, an increase in the ambient temperature can be suppressed. Further, by sealing the odor that the resin contained in the core 11 of the cast product 10 burns, the odor can be prevented from diffusing around.

  In this state, high-pressure air is jetted from the nozzles 41 a and 41 b of the blower 40 toward the casting 10, and air in the sealed space P is sucked from the duct 50. Thereby, the casting 10 is cooled by air, and the odor emitted from the casting 10 can be sucked by the duct 50. When the casting 10 is cooled to a predetermined temperature (for example, 160 ° C. ± 10 ° C.), the blower 40 and the duct 50 are stopped, the pallet 20 is lowered, and the casting 10 is taken out from the sealed space P to the outside. At this time, since the casting 10 is sufficiently cooled, the ambient temperature does not increase significantly. Further, since the resin of the core 11 of the casting 10 is almost completely burned out, no odor is emitted from the casting 10 and the odor filled in the sealed space P is also sucked in the duct 50. No odor is dissipated around.

  The cooled cast product 10 is transferred from the cast product cooling device 1 to the transport device. In the present embodiment, as shown in FIG. 3, the pallet 20 of the cast product cooling device 1 is transferred from the lifter 60 that moves up and down to the carriage 80 via the pallet delivery device 70. In the following, for the sake of convenience of explanation, the description will be made using the horizontal direction in the drawing.

  The lifter 60 is provided so as to be movable up and down (see the arrow in FIG. 3), and is provided so as to be tiltable by rotating around a rotation axis in a direction orthogonal to the delivery direction of the pallet 20 (direction perpendicular to the paper surface). The lifter 60 indicated by A in FIG. 3 is in a lower position and in a horizontal state, and the lifter 60 indicated by B is in a tilted state that is rotated by a predetermined angle at an intermediate position in the vertical direction. The lifter 60 is provided with a plurality of cylindrical rolling elements 61. The tray transfer device 70 includes cylindrical rolling elements 71 and 72 arranged in two upper and lower stages, the lower rolling elements 71 are arranged in a horizontal direction, and the upper rolling elements 72 are directed toward the carriage 80 side. And tilted downward. The carriage 80 has cylindrical rolling elements 81 and 82 that are divided into two upper and lower stages and arranged in the horizontal direction. The rolling elements 61 of the lifter 60 and the rolling elements 81 and 82 of the carriage 80 are free rollers that freely rotate, and the rolling elements 71 and 72 of the tray transfer device 70 are rotationally driveable rollers.

  The rolling elements 61 of the lifter 60 at the lower position, the lower rolling elements 71 of the tray transfer device 70, and the lower rolling elements 81 of the carriage 80 are arranged at the same height. The inclination angle of the rolling element 72 on the upper side of the tray transfer device 70 substantially matches the angle when the lifter 60 is inclined. Of the rolling elements 72 on the upper side of the tray transfer device 70, the rolling element 72a at the right end is substantially the same height as or slightly lower than the rolling element 61a at the left end among the rolling elements 61 of the lifter 60 when tilted. Arranged. Of the upper rolling elements 72a of the tray transfer device 70, the leftmost rolling element 72b is disposed at a position that is approximately the same height as or slightly higher than the right rolling element 82a of the upper rolling elements 82 of the carriage 80. Is done.

  A process of transferring the pallet 20 and the cast product 10 using the lifter 60, the tray transfer device 70, and the carriage 80 as described above will be described with reference to FIGS.

  First, the pallet 20 placed on the lower rolling element 81 of the carriage 80 is transferred to the lower rolling element 71 of the tray transfer device 70 (arrow I in FIG. 3), and further the lifter 60 at the lower position. Is transferred onto the rolling element 61 (arrow II in FIG. 3). In this state, the pallet 20 is positioned on the lifter 60 by fixing means (not shown), and the cast product 10 is placed on the pallet 20. Thereafter, by raising the lifter 60, the pallet 20 and the cast product 10 are raised together (arrow III in FIG. 3), and the pallet 20 is brought into contact with the hood portion 30 (arrow A in FIG. 4). After the cast product 10 is cooled in the sealed space P, the lifter 60 is lowered to a predetermined position (arrow B in FIG. 4), and the cast product 10 is taken out from the sealed space. When the lifter 60 is rotated by a predetermined angle in this state (arrow C in FIG. 4) and the pallet 20 is released from being fixed onto the lifter 60, the pallet 20 is moved from the rolling element 61 of the lifter 60 to the upper side of the tray transfer device 70. It slides down on the rolling element 72 (arrow IV in FIG. 3) and is further transferred to the rolling element 82 on the upper side of the carriage 80 (arrow V in FIG. 3). In this way, the pallet 20 on which the cast product 10 is placed is positioned and fixed on the carriage 80 and conveyed to, for example, a chipping (sanding) device. At this time, since the cast product 10 taken out from the cast product cooling device 1 is sufficiently cooled, it is not necessary to leave it in the cooling space and let it cool naturally, and it can be directly transported to a chipping device or the like.

  The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the cooling by the blower 40 is started immediately after the casting 10 is accommodated in the sealed space P of the casting cooling device 1, but the present invention is not limited thereto. After being left in the sealed space P for a certain period of time, cooling by the blower 40 and suction by the duct 50 may be started. Thus, the resin contained in the core 11 of the cast product 10 can be completely burned down by keeping the cast product 10 taken out from the casting machine 100 at a high temperature for a certain period of time.

  Moreover, in said embodiment, although the casting 10 is transferred by sliding the pallet 20 on a rolling element, it is not restricted to this, For example, even if the casting 10 is transferred with a belt conveyor (illustration omitted). Good. In this case, the belt of the belt conveyor serves as a conveying table on which the casting 10 is placed, and the sealed space P is formed by the belt and the hood portion 30.

  Moreover, in said embodiment, although the conveyance stand (pallet 20) in which the casting 10 is mounted can be raised / lowered, it is good also as the hood part 30 being raise / lower contrary to this.

It is a longitudinal cross-sectional view of a casting product cooling device. It is XX sectional drawing of FIG. It is a front view which shows the conveyance method of a pallet. It is a front view which shows raising / lowering and rotation of a pallet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casting product cooling apparatus 10 Casting product 11 Core 12 Casting part 20 Pallet (conveyance stand)
30 Hood 40 Blower (cooling means)
50 Duct (suction means)
60 Lifter 70 Tray delivery device 80 Cart 100 Casting machine P Sealed space

Claims (1)

A sealed space that accommodates the cast product taken out from the casting machine, a cooling means for cooling the cast product in the sealed space, and a suction means for sucking air in the sealed space ,
A casting product cooling apparatus , comprising: a conveyance table that conveys a casting product ; and a hood portion that is provided above the conveyance table and that opens downward, and forms the sealed space by the conveyance table and the hood portion .

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