JPS6348622B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a circulating mold making line with a secondary cooling pool line.

Generally, after pouring, the casting is allowed to cool down in the mold for a long time in order to stabilize the material quality of the casting. However, there was a problem in that a large number of upper and lower frames were required due to the long cooling pool time.
On the other hand, depending on the product, even if the mold is broken early after pouring, it will not affect the stability of the material.
Such products need to be released quickly to prevent aging of the sand and increase in sand temperature.

The present invention has been made to solve these problems, and in cases where additional cooling time is required after primary cooling, the upper frame is separated and only the lower frame is sent to the secondary cooling pool line. Cool for the required time, and
The purpose of the present invention is to provide a circulating mold making line with a secondary cooling pool line, which does not feed the mold directly into the secondary cooling pool line when only primary cooling is required, and which requires fewer upper frames. It is something to do.

The configuration of the present invention will be explained below based on examples. Reference numeral 1 denotes a circulating mold making line, and on the upper surface of the circulating mold making line 1, a number of mold carts (not shown) whose ends are connected to each other in a chain with pins are movably mounted. 2 and 3 are an upper mold making line and a lower mold making line constructed in parallel with each other at a predetermined interval between opposing linear longitudinal lines in the circulation mold making line 1, and are located at an intermediate position of the upper mold making line 2. An upper mold making machine 4 is installed in the , and a frame aligning device 5 is installed at the intersection of the end of the upper mold making line 2 and the circulation mold making line 1, and a frame matching device 5 is installed at the intersection of the end of the upper mold making line 2 and the circulation mold making line 1. Upper frame separating devices 6 are arranged at the intersections of the lines 1, respectively. Further, an upper frame cleaning device 7 for cleaning the inner surface of the empty upper frame is provided between the upper molding machine 4 and the upper frame separation device 6. Further, a lower mold making machine 8 is installed at an intermediate position of the lower mold molding line 3, and a lower mold reversing device 9 is installed at a position forward of the lower mold molding machine 8 in the frame advancing direction. Lower molding line 3
A lower mold changing device 10 is installed at the intersection of the terminal end and the circulating mold making line 1. In addition, at the intersection of the starting end of the lower mold making line 3 and the circulation mold making line 1, a lower frame feeding device 11 is provided, and between this lower frame feeding device 11 and the lower mold making machine 8, a lower frame cleaning device is attached. A mold breaking device 12 is installed respectively. 13 is a secondary cooling pool line, and on this secondary cooling pool line 13, as shown in FIG.
A cart 14 is mounted so as to be movable via wheels 15, and a plurality of ends of the cart 14 are connected in a chain with pins. A lower frame 17 holding a mold 16 after the upper frame has been removed is placed on the upper surface of the truck 14, and a cast product 18 is housed inside the mold 16. 19 and 20 are mold transfer devices installed in parallel between the circulating mold making line 1 and the secondary cooling pool line 13 in front of the lower mold feeding device 11, and are used to transfer molds on the upper mold making line 2 side. The changing device 19 removes the mold 16 held in the lower frame 17 after the primary cooling and after separating the upper frame for further cooling.
The mold transfer device 20 on the lower mold making line 3 side circulates the secondary cooled mold 16 held in the lower frame 17 to form the secondary cooling pool line 13. It is provided to return to line 1.

In addition, if the cast product is thin and needs to be demolded quickly, and if the punch-out method is used for demolding, the cast product will be damaged or bent. A product conveyor 21 is provided in the space between the next cooling pool lines 13, and between the starting end of this product conveyor 21 and the circulation mold making line 1 immediately after passing through the upper frame separation device 6,
A product lifting device 22 may also be provided. 23 is a vibrating conveyor for separating and transporting the cast product 18 and the sand attached to the cast product 18, and the vibrating conveyor 23 is connected to a conveyor 24 for transporting the cast product 18 separated from the sand. .

Next, the operation of the device configured as described above will be explained.

The lower frame 17 holding the lower mold molded by the lower mold molding machine 8 is sent to the lower mold reversing device 9 on the lower mold molding line 3, and after being reversed by the lower mold reversing device 9, the lower mold is placed on the lower mold. The changing device 10 transfers the mold onto the upper surface of a mold truck (not shown) on the circulating mold making line 1 and sends it to the frame matching device 5 on the circulating mold making line 1 . On the other hand, the upper frame (not shown) holding the upper mold molded by the upper mold molding machine 4 is sent on the upper mold molding line 2 to the frame matching device 5 and is mated with the lower frame 17. After the frames are assembled, the upper and lower frames 17 (the upper frame is not shown) holding the pair of upper and lower molds 16 are placed on the upper surface of a mold truck (not shown) and run on the circulation mold making line 1. The molten metal is sent to a pouring position (not shown). After pouring, the poured mold 16 is placed on the mold truck and moved further forward on the circulation mold making line 1, and the cast product in the mold 16 held in the upper and lower frames 17 is removed. 18 is the upper frame separation device 6 while undergoing primary cooling.
The upper frame is removed. The removed upper frame is sent to the upper frame cleaning device 7 on the upper mold molding line 2, and the inner peripheral surface of the upper frame is cleaned and carried into the upper mold molding machine 4, where the upper mold molding operation is performed again. It is done. On the other hand, the lower frame 17, which is separated from the upper frame and holds the casting 16 containing the cast product 18, is placed on the upper surface of a casting cart (not shown) and is placed on the circulation mold making line 1.
The mold transfer device 19 is moved forward through the product lifting device 22 and sent to the mold transfer device 19 position. Here, if the cast product 18 is thick and requires additional cooling time, the mold transfer device 19 moves the lower frame 17 holding the mold 16 from the upper surface of the mold truck to the secondary cooling pool line 13. Trolley 14
It is transferred onto the top surface as shown in FIG. When the lower frame 17 is transferred to the upper surface of the truck 14, the truck 14 with the lower frame 17 placed on the upper surface moves one pitch (adjacent lower truck 14) on the secondary cooling pool line 13 by a drive device (not shown). center-to-center distance), and then moved forward one pitch further on the secondary cooling pool line 13 by the cart on which the lower frame that had been sent on the circulating mold making line 1 was placed. Ru. In this way, when the trolley 14 on which the lower frame 17 is mounted is moved forward one pitch at a time on the secondary cooling pool line 13 and sent to the mold transfer device 20, the trolley 14 is moved forward by the mold transfer device 20. The lower frame 17 on the upper surface is transferred to the upper surface of the casting cart on the circulating mold making line 1. When the lower frame 17 holding the mold 16 is transferred to the upper surface of the mold truck and sent on the circulation mold making line 1 to the lower frame feeding device 11, the lower frame 17 is moved to the mold by this lower frame feeding device 11. While holding the mold 16, it is transferred from the upper surface of the mold truck onto the lower mold making line 3, and the lower mold dismantling device 12 with a frame cleaning device performs mold disassembly and frame cleaning. The demolded cast product 18 falls together with the sand mold onto the vibrating conveyor 23 below, moves forward while being separated from the adhered sand, and is taken out via the conveyor 24. On the other hand, after the empty upper frame is cleaned, it is sent to the lower molding machine 8, where the molding operation is performed again, and the above-mentioned operation is repeated thereafter. In addition, in the case of a cast product that does not require secondary cooling, after the upper frame is separated by the upper frame separation device 6, the lower frame holding the mold is placed on a mold truck on the circulation mold making line 1. Mold transfer device 1
9 and 20 and is sent to the lower frame feeder 11, and the lower frame is transferred from the upper surface of the mold truck to the lower mold making line 3 while holding the mold, and on the way, the lower frame is transferred in the same manner as described above. The lower mold disassembly device 12 with a frame cleaning device removes the mold and cleans the frame. After cleaning, the empty lower mold is sent to the lower molding machine 8 again and a molding operation is performed.

In addition, if a thin-walled cast product is damaged or bent when punched out when breaking the mold, after the first cooling and after separating the upper frame with the upper frame separation device 6. The cast product may be lifted onto the product conveyor 21 from the lower frame by the product lifting device 22.

In addition, in the above embodiment, there is a
Although a series of mold transfer devices 19 and 20 are installed, a series of mold transfer devices may be used.

As is clear from the above description, according to the present invention, it is possible to efficiently use both long and short cooling times for cast products, and when a long cooling time is required, after the primary cooling, After separating the upper frame, the poured mold is held only in the lower frame for secondary cooling, which has the effect of reducing the number of upper frames and reducing equipment costs. , the effect of contributing to this type of industry is significant.

[Brief explanation of the drawing]

FIG. 1 is an overall plan view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA in FIG. 1... Circulating mold making line, 2... Upper mold making line, 3... Lower mold making line, 6... Upper frame separation device, 1
3... Secondary cooling pool line, 19, 20... Mold transfer device.

Claims (1)

[Claims] 1. A secondary cooling pool line is provided next to the circulating mold making line, and an upper mold making line is provided at a predetermined interval between the line facing the secondary cooling pool line in the circulating mold making line and the line facing this. A mold transfer device is installed between the circulation mold molding line and the secondary cooling pool line between the upper mold and lower mold molding lines, and a mold transfer device is installed between the upper mold molding line and the lower mold molding line. A circulating mold making line with a secondary cooling pool line, characterized in that an upper frame separation device is provided at the intersection of the starting end and the circulating mold making line.