JPS6239872Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an unpoured mold breaking device for destroying unpoured molds with extremely low collapsibility that have not been filled with mold in a vertical, frameless, high-pressure molding line, etc. It is something.

Since unpoured molds produced under high pressure have extremely low collapsibility, the following methods have been conventionally adopted in order to reduce the unpoured mold to fine particles and recover the entire amount in the process of separating the product from sand. It is being That is, the first method is to lengthen the processing time in the process of separating the product and sand, and the second method is to increase the external force such as vibration in the same process in order to obtain a large disintegration force. It is. However, when adopting the second method, it is necessary to increase the scale of the equipment, which increases costs in terms of both initial cost and running cost. This has the drawback that the residence time of the product in the process becomes longer, making it more likely that the product will be damaged. On the other hand, if the mold is not completely collapsed in the same process and the sand is not completely recovered, the sand flows out of the line, increasing the cost of sand in the sand processing line.

The purpose of the present invention is to provide an unpoured mold breaking device that can reliably destroy unpoured molds and reduce them to fine particles. To provide an unpoured mold breaking device that can improve sand separation and recovery capabilities, prevent product defects in the same process, and also have the ability to sort only unpoured molds that should be destroyed. It's about doing.

The unpoured mold breaking device of the present invention, which meets this purpose, is comprised of a mold breaking protrusion that is rotatably driven by a motor or the like and is disposed so as to be movable relative to the unpoured mold to be destroyed. In other words, the unpoured mold is reliably collapsed into fine particles by contacting the rotationally driven mold breaking protrusion.
This improves the separation and recovery performance of the product and sand in the next process, and also prevents product defects such as damage to the product in the same process. In addition, by linking the unpoured mold breaking device of the present invention with a temperature detector, even if a poured mold and an unpoured mold are sent on the same conveyance line, the unpoured mold can be It is possible to select and disintegrate only.

An embodiment of the present invention will be described below with reference to the drawings.

The unpoured mold breaking device 1 has a rotating drum 2,
A plurality of mold breaking protrusions 3 are arranged on the circumferential surface of the rotating drum 2. A shaft 2a of the rotating drum 2 is rotatably supported by a frame 4, and a sprocket 5 is attached to one end of the shaft 2a. On the other hand, a motor 6 is fixed to the upper surface of the frame 4, and a sprocket 7 is attached to a rotating shaft 6a of the motor 6. A chain 8 is wound between the sprocket 7 and the sprocket 5, and the rotating drum 2
is rotated in conjunction with a motor 6 via a sprocket 7, a chain 8, and a sprocket 5.

On the other hand, a mold overturn prevention plate 9 is attached to the lower end of the frame 4 in parallel to the rotating drum 2, and the mold overturn prevention plate 9 is located on the side of the rotary drum 2. In addition, a frame 10 is provided on the upper surface of the frame 4.
is attached to the frame 10, and a fluid drive device 11 such as a hydraulic cylinder device is connected to its piston shaft 11a.
are connected. The fluid drive device 11 is fixed to a fixed part (not shown), and the frames 10 and 4 move up and down as the piston shaft 11a expands and contracts. Note that reference numerals 12 and 12 are guide rods installed in the frame 10, and vertical movement of the frames 4 and 10 is performed while being guided by these guides 12 and 12.

The operation of the unpoured mold breaking device 1 is controlled by a control device 13, and the control referred to here refers to the rotation and stopping of the motor 6 and the expansion and contraction of the piston shaft 11a of the fluid drive device 11. and,
Reference numeral 14 indicates a temperature detector, and the temperature detector 14 is connected to the control device 13. As will be described later, the temperature detector 14 is disposed above the locus of movement of the sprue cups (not shown) of the molds 15, 16, 17, 18, etc., and detects the temperature inside the sprue cups to control pouring. It has the function of sorting out whether the mold is a poured mold or an unpoured mold. That is, since the sprue cup of the poured mold has a higher temperature than the sprue cup of the unpoured mold, such a sorting function can be exerted. Therefore, various types of temperature sensitive detectors can be used as the temperature detector 14.

Next, 19 is the mold 15, 16, 17, 18,
. . in the B direction intermittently, and the transport device 19 transports the poured mold and the unpoured mold in an arbitrarily mixed state. A chute 2 is provided at the tip of the conveyance device 19.
0 is provided, and the chute 20 is connected to the next process of separating the product from sand (not shown).

The action will be explained below.

When the pouring mold and the unpoured mold are intermittently sent in the direction B by the conveying device 19 in a mixed state, each mold 15, 16, 17, 1
Since the temperature detector 14 is disposed on the movement trajectory of the sprue cups 8, . . . , when the unfilled mold passes below the temperature detector 14, the temperature detector
4 issues an activation signal to the control device 13. After receiving the activation signal, the control device 13 starts the rotation of the motor 6 and starts the rotation of the fluid drive device 11 after a certain period of time has elapsed, that is, when the unpoured mold comes to the position of the mold 15.
is operated to extend the piston shaft 11a. As a result, the unpoured mold stopped at the position of the mold 15 comes into contact with the mold breaking protrusion 3 which rotates in the direction A in conjunction with the motor 6, and is destroyed as the frame 4 descends, resulting in finer particles. Ru. Here, since the mold breaking protrusion 3 is rotating in the direction A, the unpoured mold that has stopped at the position of the mold 15 tries to move in the direction of the chute 20 due to the rotational moment.
Since a mold fall prevention plate 9 is attached to the frame 4, the unfilled mold is held by the mold fall prevention plate 9 and prevented from falling over.

When the frame 4 descends and the mold breaking protrusion 3, frame 4, and mold fall prevention plate 9 reach positions 3', 4', and 9' in FIG. 1, a limit switch (not shown) detects this. control device 1
3, the control device 13 stops the rotation of the motor 6 and reversely operates the fluid drive device 11 to return the frame 4 to its original position (solid line position in FIG. 1).
to be restored.

The collapsed unpoured mold is then sent by the chute 20 to the next process of separating the product from the sand, and in the same process, the sand is recovered.

In addition, in order to collapse only the unpoured mold to be collapsed by the rotation of the mold-breaking protrusion 3 and prevent the collapse of adjacent molds, the rotating drum 2
It is necessary that the sum of the radius of C and the height of the mold breaking protrusion 3 is approximately half the width C of the mold.

In addition, in the above embodiment, the unpoured mold breaking device 1 was positioned above the molds 15, 16, 17, 18, ... and moved up and down, but the molds 15, 16, 17, 1
The same effect can be achieved without interfering with subsequent molds even if the unpoured mold breaking device 1 is disposed on the side of the molds 8, .

As explained above, according to the unpoured mold breaking device of the present invention, the unpoured mold, which has extremely low collapsibility, can be reliably collapsed and made into fine particles in the pre-process of separating the product from sand. Therefore, the process of separating the product from the sand only requires collapsing the pouring mold, and the equipment for the separation process can be miniaturized.

Furthermore, since the sand recovery efficiency in the process of separating the product and sand increases, it becomes possible to reduce the amount of sand flowing out of the line, resulting in the effect of reducing production costs.

Furthermore, since the mold collapse force in the process of separating the product and sand can be reduced, it is possible to prevent damage and cracking of the product in the process, thereby reducing the product defect rate. .

By using a temperature sensor, it is possible to separate poured molds from unpoured molds, so that poured molds and unpoured molds are transported on the same transport line. It is possible to reliably collapse only the unpoured mold even when there is a large amount of molten metal, and the effect is that it is extremely versatile.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the arrangement of the present invention, and FIG. 2 is a left side view of FIG. 1. 1... Unpoured mold breaking device, 2... Rotating drum, 2a... Shaft, 3... Mold breaking protrusion, 4, 1
0... Frame, 5, 7... Sprocket, 6...
...Motor, 6a...Rotating shaft, 8...Chain, 9...
... Mold fall prevention plate, 11 ... Fluid actuation device, 11
a... Piston shaft, 12... Guide rod, 13...
Control device, 14...Temperature detector, 15, 16, 1
7, 18... Mold, 19... Conveyance device, 20...
Shoot.

Claims (1)

[Scope of utility model registration request] A rotatably driven mold breaking protrusion is arranged so as to be able to reciprocate in a direction perpendicular to the mold conveying direction with respect to the conveyed mold, and a temperature-dependent mold breaking protrusion is provided upstream of the mold breaking protrusion in the mold conveying direction. The mold is equipped with a temperature detector that detects whether the mold is an unfilled mold, and the mold, which the temperature detector detects as an unfilled mold, is transported to a position facing the mold breaking protrusion. a position where the temperature sensor and the mold breaking protrusion are related to each other so that the mold breaking protrusion moves in the direction of the mold, and the unpoured mold is prevented from tipping over due to rotation of the mold breaking protrusion; A mold breaking device for unpoured molten metal, characterized in that a mold tipping prevention plate is provided on the molten metal.