JPH0239341B2 - SHERUGATANAKAGONOBUNPAISOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a distributing device for a plurality of types of shell mold cores formed by a shell mold machine.

[Conventional technology]

As is well known, the shell mold method is a method of making a thin shell-shaped shell mold using resin sand mixed with a carbonic acid-based synthetic resin, and then pouring molten metal into it to make a casting. A mold machine consists of a device that supplies resin sand to a mold and a device that heats the mold, and such devices have been automated for a long time. In this shell mold machine, the device that supplies the resin sand to the mold generally uses a method of blowing compressed air into the mold, the so-called blow method, and the mold is divided into horizontal parts. There are two main types: the vertical splitting method, and the vertical splitting method.

After molding multiple types of shell molds or shell-shaped cores (hereinafter collectively referred to as cores) at once using a conventional automated shell mold machine,
It required manual labor to take out the materials, distribute them to storage boxes for transport, and pack them. In such cases, manually sorting the cores made of sintered resin sand is a harsh process that is accompanied by heat and unpleasant odors. I was getting used to it.

[Means for solving problems]

Therefore, the present invention was created in view of solving the disadvantages of the prior art, and its gist is that a fixed mold and a movable mold are used to mold multiple types of shell-shaped cores at once. In a shell mold machine equipped with a mold consisting of a shell mold machine, a receiving member that receives these shell mold cores and is capable of advancing and retracting and reversing is installed vertically so as to form a groove in the reversal direction, and A partition piece for sorting the shell mold cores is provided, a chute having a plurality of branch channels is provided on the side where the receiving member retreats from the mold, and a chute having a plurality of branch channels is provided on the lower end side of the chute. A core conveying means is provided, and the receiving member is advanced between the fixed mold and the movable mold when the mold is opened, and is reversed after being retreated toward the upper end of the chute. Located in the distribution device for shell type cores.

〔Example〕

The structure of the present invention will be explained in detail with reference to embodiments shown in the accompanying drawings.

Fig. 1 is an overall side view of an embodiment of the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a longitudinal cross-sectional view of main parts, and Fig. 4
The figure is a perspective view of the main part of FIG. 3.

1 is a shell mold machine, and this shell mold machine 1 adopts a method of supplying resin sand to a mold 2 by a blowing method, and also employs a vertical dividing method in which the mold 2 is divided on a vertical plane. Furthermore, the structure employs a direct blow method in which a raw material sand container 3 is installed above. The mold 2 is suitable for molding a cylinder head bolt, a bag-shaped head bolt, and a core for forming a pre-combustion chamber (all of which have a rod shape) used in a small water-cooled diesel engine.

4 is a crimping container a which can be taken in and out as shown by the arrow. This crimping container 4 stores resin sand for several times, and when the mold 2 is closed, this crimping container 4 is placed on top of the mold 2. Placed and pressed cylinder 5
The crimping container 4 is crimped onto the upper surface of the mold 2 by the crimping method.
Next, resin sand is blown into the mold 2 using compressed air (not shown). This mold 2 is heated with an electric heater.
Since it is preheated to 270℃, it can be printed in about 50 seconds. Then, mold 2 is the second
As shown in the figure, it consists of a fixed mold 6 and a movable mold 7, both of which are connected by tie rods 8,8.
It moves back and forth along the . Therefore, after the curing time has elapsed, the movable mold 7 moves to the drive cylinder 9.
to open the mold. put it here,
The shaped core is attached to the movable mold 7 side,
Therefore, it is pushed out by the push-out pin 10 and separated from the movable mold 7. That is, when the movable mold 7 moves backward to a certain extent, the operation of the drive cylinder 9 that drives the movable mold 7 is temporarily stopped. The position stops immediately before the push-out pin 10 comes into contact with the stopper 11. Next, this moving mold 7
When the ejector pin 10 moves back further by about 10 to 15 mm, the ejector pin 10
is stopped by the stopper 11, so the movable mold 7
Push out the core that is attached to the sides. The above structure and its operation are well known as a shell mold machine using the direct blow method.

Here, in this embodiment, the core distribution device 12
The receiving member 13 in this core distribution device 12 is constructed as follows.
Once the movable mold 7 stops, the receiving member 13 moves forward between the fixed mold 6 and the movable mold 7,
Next, when the movable mold 7 moves further backward and the core is released by the push-out pin 10, the core is received. As shown in FIG. 4, this receiving member 13 has a bent portion 15 formed on one end side that corresponds to the reciprocating direction of the plate body 14, and partition plates 16, 16 and both side plates so that a groove is formed in the reverse direction. 17, 17 are formed to form a so-called dustpan shape. This plate body 14 is an arm member 18
It is supported in a cantilever manner by the arm member 18, and is designed to be inverted around the arm member 18. Further, a curved rod 19 is protruded from one end of this plate body 14, and this curved rod 19
A U-shaped guide 20 is attached to the tip.
This guide 20 slides while being guided by a guide rail 21 protruding from the upper surface of the movable mold 7 shown in FIG. Further, the arm member 18 that supports the receiving member 13 is fixed to one end of the guide shaft 22,
This guide shaft 22 reciprocates in the left-right direction within the core distribution device 12.

The guide shaft 22 is installed horizontally at the top of the core distribution device 12, as shown in FIG.
3, it reciprocates in the left and right direction. These guide shafts 22 and air cylinders 23 are connected to a vertical shaft 24
It is placed on a bracket 25 provided at the upper end (Since FIG. 3 is a schematic diagram, the air cylinder 23 and the air motor 26 described later are shown as being separately installed, but both (fixed on the bracket 25). A spline 27 is carved in the center of the guide shaft 22, and this spline 27 engages with a spline carved on the inner periphery of the collar 28. This collar 28 is the bearing 2
It is incorporated into the housing 30 via 9 and 29. This housing 30 is fixed to the bracket 25. Further, a square shaft portion 31 is formed at one end of the guide shaft 22, and a sprocket 32 is attached to this square shaft portion 31.
are slidable in the axial direction and are engaged to transmit rotation. This sprocket 32 is connected to a sprocket 33 driven by an air motor 26.
and the chain 34.

The vertical shaft 24 is erected within a frame 35 and reciprocated in the vertical direction by an air cylinder 36 provided at its lower end. A spline 37 is cut in the center of the vertical shaft 24, and this spline 37 engages with a spline cut on the inner circumference of the collar 38. This collar 38 is connected to the housing 40 via a bearing 39.
The housing 40 is attached to the frame 35. A roller 41 is provided at the lower end of the frame 35, and the roller 41 rolls on a rail 42 on the ground. A square shaft portion 43 is formed in the middle of this vertical shaft 24, and a sprocket 44 is attached to this square shaft portion 43.
can slide in the axial direction and are engaged to transmit rotation. This sprocket 44 is driven via a sprocket 46 driven by an air motor 45 and a chain 47.

48 is a gutter-like chute whose upper end is concentrated to connect each other, but the lower end becomes a radial branch channel, and three storage boxes (plastic boxes) 4
I am facing the top of 9th.

[Effect of the embodiment]

This embodiment operates as follows.

Since the shell mold machine 1 of this embodiment has a well-known structure, the explanation of its operation will be simplified.

After the cure time of the mold 2 has elapsed, the movable mold 7 retreats, a predetermined gap is opened between the fixed mold 6 and the movable mold 7, and the movable mold 7 temporarily stops. The receiving member 13 is then driven by the air cylinder 23 to move forward and intercede between them;
The U-shaped guide 20 moves forward while being guided by a guide rail 21. At this time, when the receiving member 13 comes to the front surface of the movable mold 7 (the surface mating with the fixed mold 6), it stops. Then, the movable mold 7 moves back slightly again. As a result of this retreat, the core in which the stopper 11 and the push-out pin 10 are formed is pushed down onto the receiving member 13. Here, in this mold 2, the same type of cores are arranged in the vertical direction,
Different types of cores are molded in the horizontal direction. Therefore, cores of the same type are separated and received by the partition plate 16. Further, when the movable mold 7 moves slightly backward, the receiving member 13 moves toward the U-shaped guide 20.
Since the receiving member 13 is guided and regulated by the guide rail 21, the receiving member 13 accompanies the retreat of the movable mold, and the receiving member 13 and the movable mold 7 are in close contact with each other. That is, the receiving member 13
The reason why there is enough room for the receiving member 13 to accompany the movable mold 7 is that the receiving member 13 is cantilevered by the plate-shaped arm member 18, that the guide shaft 22 has a spline carved only in the central part, and This is because the reversal drive of the receiving member 13 is a chain drive.

Next, after receiving the core with the receiving member 13,
The receiving member 13 is retracted by the air cylinder 23. Next, the vertical shaft 24 is rotated by driving the sprocket 44, and the receiving member 13 is attached to the chute 4.
It comes to the upper end position of 8 and stops. Next, the guide shaft 22 is rotated by the rotation of the sprocket 32, so the receiving member 13 falls, and the core falls into the storage box 49 while sliding along the branch channel of the chute 48. . Next, receiving member 1
3 returns to the side of the mold 2 and waits to receive the core in the next mold.

In addition, the air cylinder 36 provided at the lower end of the vertical shaft 24 is installed in the receiving member 1 because the chute 48 is also lowered when the storage box 49 is placed at a lower position.
3 is placed at an appropriate position to prevent damage caused by falling cores. Furthermore, the mounting position of the storage box 49 is such that the receiving member 13 is away from the position of the mold 2 as shown in FIG.
Although the position is set to rotate 180 degrees, it may be rotated 90 degrees as long as the location is convenient for the next conveyance operation.

In addition, an optical passage hole (not shown) is provided in the middle of the chute 48, which is blocked by the passage of the molded core, and an optical sensor installed in the light receiving part of this optical passage hole drives the shell mold machine. The drive source of the shell mold machine may be stopped at least when the optical path hole is not blocked during a predetermined passing period of the core (one cycle time of 1 minute and 30 seconds).

〔Effect of the invention〕

According to the present invention, since multiple types of shell-type cores are molded at once, the molding work can of course be made more efficient. Since the mold cores are sorted and distributed to the next process, the operator is freed from the harsh distribution work of handling heated shell mold cores.

In particular, since the receiving member is simply provided with partition pieces for sorting the shell-type cores, not only the receiving member can be simplified, but also the operation of the shell-type core distribution device can be simplified.

[Brief explanation of drawings]

Fig. 1 is an overall side view of an embodiment of the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a vertical sectional view of main parts, and Fig. 4
The figure is a perspective view of the main part of FIG. 3. 2... Mold, 13... Receiving member, 14... Partition piece, 22... Guide shaft.

Claims (1)

[Claims] 1. In a shell mold machine equipped with a mold consisting of a fixed mold and a movable mold for molding multiple types of shell mold cores at once, for receiving these shell mold cores. The receiving member, which can move forward, backward and reversible, is erected so as to form a groove in the direction of reversal thereof, and is provided with partition pieces for sorting these shell-shaped cores, and the receiving member is provided with a partition piece for sorting the shell-shaped cores. A chute having a plurality of branch channels is provided on the retreating side, a core conveying means divided into a plurality of pieces is provided on the lower end side of the chute, and the receiving member is moved with the fixed mold when the mold is opened. A distributing device for a shell-type core, characterized in that the shell-type core is advanced between the mold and the mold, and is then retracted toward the upper end of the chute and then reversed.