JPS6252661B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a two-mold simultaneous manufacturing line that simultaneously molds two upper molds and two lower molds. Conventionally, general molding lines have not been able to increase productivity because they have been molding one mold at a time. Also, out of various mold shapes, only one type of mold must be flowed continuously throughout the day, so depending on the shape of the mold on that day, the balance between the amount of molten metal coming out of the melting furnace and the amount of molten metal being poured may be disrupted. Otherwise, there is a waiting time for molding, and the sand metal ratio (ratio of pouring weight to molding sand weight for one casting flask) changes greatly every time the mold shape changes, so the sand properties of the recovered sand change, and the sand properties change. There were problems such as increased variation and product defects due to sand properties.

The present invention has been made in view of these problems, and can dramatically improve productivity, as well as improve the amount of molten metal coming out and the amount of molten pouring by simultaneously pouring two types of molds with different cavity amounts. The object of the present invention is to provide a new molding line that can correct the imbalance in the sand metal ratio and prevent product defects caused by sand properties by reducing variations in the sand metal ratio.

The configuration of the present invention will be explained below based on the embodiment shown in FIG. Reference numeral 1 denotes an upper molding line with a pouring line 1a connected to the tip, and on both sides of this upper molding line 1 there are lower molding lines 2, which are shorter than the upper molding line 1 and are spaced at approximately equal intervals. A cooling line 3 having approximately the same length as the upper molding line 1 is extended in parallel, and a lower mold transfer line is provided between the tip of the lower molding line 2 and the middle part of the upper molding line 1. A first transfer device 4 for replacement is installed orthogonally, and second and third transfer devices 5 and 6 are installed orthogonally between the ends of the upper molding line 1 and the cooling line 3, respectively. Furthermore, the third transfer device 6 is installed to extend to the base end of the lower mold making line 2, forming a circulation line for the flasks. In the middle of the lower molding line 2, a lower molding machine 7 capable of molding two lower frames at the same time is installed, and a lower mold reversing machine 8 is installed at its tip.
Further, a lower frame pusher cylinder 9 is installed laterally on the outer side of the base end of the lower molding line 2 so as to face the lower molding line 2. On the other hand, an upper frame is installed at a position corresponding to the lower molding machine 7 on the upper molding line 1.
An upper mold molding machine 10 capable of simultaneously molding individual pieces is disposed, a frame aligning device 11 is located at a position past the first transfer device 4, and a weight transfer device 12 is located at the tip side of the upper mold molding device 10. It is installed across the molding line 1 and the cooling line 3. An upper frame pusher cylinder 13 is installed on the outside of the base end of the upper molding line 1 facing the upper molding line 1 in the same direction as the lower molding pusher cylinder 9. A pusher cylinder 14 is installed at a lower position slightly in front of the changing device 4 on the same line as the upper pusher cylinder 13. Further, a mold disassembly device 15 is provided in the middle of the cooling line 3, and a surface plate return device 16 is provided at a lower position between the upper molding line 1 and the cooling line 3. A pusher cylinder 17 is mounted on an extension of the cooling line 3 outside the second transfer device 5 so as to face the cooling line 3.

In addition, the upper molding line 1 and the third transfer device 6
A frame separating device 18 for separating the upper and lower frames is arranged above the intersection of the frames.

Next, the operation of the device configured as described above will be explained. The two lower frames each having a built-in lower mold having cavity parts of different shapes molded by the lower mold molding machine 7 are moved over the lower mold molding line 2 by the lower mold reversing machine 8 by the operation of the lower mold pusher cylinder 9. After being conveyed to the tip, the two pieces are simultaneously reversed, and after being reversed, a surface plate is set, and a core is set on the way to the tip. Next, the two lower frames are simultaneously transferred onto the upper molding line 1 by the first transfer device 4, and are fed into the frame aligning device 11 by the operation of the pusher cylinder 14, where they are transferred to the upper molding line 1. The two upper frames each have built-in upper molds having cavity portions of different shapes that have been molded by the molding machine 10 and transported on the upper mold molding line 1. A weight is placed on the upper surface of the upper and lower flasks by a weight transfer device 12, and the flasks are sent onto the pouring line 1a to perform a pouring operation. The poured upper and lower flasks that have been sent to the tip of the upper molding line 1 are transferred to the cooling line 3 by the second transfer device 5.
By the operation of the pusher cylinder 17, the weight is transferred onto the cooling line 3 and sent to the weight transfer position. Next, the weights are removed from the poured upper and lower flasks by this weight transfer device, and only the upper and lower flasks are sent further up the cooling line 3, and the molds are disassembled at the mold disassembly device 15 position. Then, the surface plate is returned to the lower molding line 2 by the surface plate return device 16. Meanwhile, above the sky
The lower flask is sent on the cooling line 3 to the tip, and is further sent to the frame separating device 18 by the third transfer device 6, where it is separated into an upper flask and a lower flask, and the lower flask and upper flask are transferred to pusher cylinders 9, 13. The molds are fed again into the upper molding line 1 and the lower molding line 2, respectively, and the molding operation is repeated.

It should be noted that the present invention is not limited to the embodiment shown in FIG.
Figure) Components having the same configuration as in Figure 1 are given the same numbers and their explanation will be omitted.

First, referring to FIG. 2, 19 is a lower mold making line, 20 is a surface plate return line, 21 is an upper mold making line, 22 is a pouring cooling line, 23 is a frame fitting and transferring device, and 24 is a mold disassembly device. , 25 is an upper frame separation/transfer device, 26 is a lower frame transfer device,
27 and 28 are transfer devices.

In this structure, the upper frame and the lower frame, which are molded simultaneously by the upper and lower molding machines 10 and 7, are aligned by the frame alignment device 23, and then passed through the transfer device 27 and poured. Hot water/cooling line 22
After pouring the molten metal, the mold is broken out by the mold breaking device 24, and the surface plate is circulated on the surface plate return line 20.
In addition, the upper frame passes through the upper frame separation/transfer device 25 to the upper molding line 21, and the lower frame passes through the lower frame transfer device 2.
6, the molds are sent to the lower molding line 19 and reach the upper and lower molding machines 10 and 7, where they are reused and the above operations are repeated.

Next, referring to FIG. 3, 29 is a lower molding line, 30 is an upper molding line, 31 is a pouring line, 32 is a cooling line, 33 is a frame alignment device,
34 is a mold disassembly device, and 35, 36, and 37 are transfer devices.

In this structure, the upper frame and the lower frame, which are molded simultaneously by the upper and lower molding machines 10 and 7, are combined by the frame matching device 33 and transferred to each other via the transfer device 35. The molten metal is equally distributed and sent to the pouring line 31, and after pouring, it passes through the transfer device 36 and the cooling line 32 to the mold disassembly device 3.
4, the upper frame and lower frame pass through the transfer device 37, upper mold and lower mold molding lines 29 and 30, and reach the upper mold and lower mold molding machines 10 and 7, where they are reused. The operation is repeated.

Note that the arrow in the figure indicates the direction of movement of the flask.

In short, the present invention provides a lower molding line equipped with a lower molding machine capable of molding two lower frames at the same time, and
The upper molding line, which is equipped with an upper molding machine that can mold individual pieces at the same time, is incorporated into the circulation molding line, dramatically improving productivity and correcting the balance between the amount of hot metal coming out and the amount of pouring. It has excellent effects such as eliminating the need to wait for hot water or molding, and also reduces variations in the sand metal ratio, resulting in stable sand properties and fewer product defects.The effect on this type of industry is extremely significant. It is.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the invention, and FIGS. 2 and 3 are plan views showing other embodiments of the invention. 1, 21, 30... Upper molding line, 2, 1
9, 29...Lower molding line, 7...Lower molding machine, 10...Upper molding machine.

Claims (1)

[Claims] 1. A lower molding line equipped with a lower molding machine that can mold two lower frames at the same time, and an upper molding line equipped with an upper molding machine that can mold two upper frames at the same time.
A two-mold simultaneous molding line characterized by being incorporated into a circulating molding line.