JPH0428468B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a mold crushing device used for crushing, for example, a prototype self-hardening mold.

[Prior art] Generally, when manufacturing a mold, a prototype mold is made, and the prototype mold is used to produce a prototype (casting).
After molding, the mold is broken down and the prototype is taken out to examine product specifications, dimensional accuracy, etc., and make modifications.

As a mold for the above-mentioned reagent, a self-hardening mold obtained by placing molding sand containing a viscosity binder into a wooden mold (main mold) and leaving it for a predetermined period of time is often used. After a prototype is cast using this mold, an operator conventionally uses a hammer to break the mold in order to take out the prototype.

Therefore, the work of dismantling the mold is time consuming,
It also requires a lot of effort on the part of the workers. Moreover, it is not suitable for mass production, resulting in a decrease in work efficiency.

[Object of the Invention] This invention was made to solve the problems of the prior art described above, and provides a mold crushing device that can continuously and efficiently crush and process molds. The purpose is to

[Structure of the Invention] In order to achieve the above object, the present invention has the following structure. That is, a mold splitting unit having a wedge piece for pressing the mold from the outside in a transfer path for transferring the mold, a moving table located downstream of the mold splitting unit for moving the mold with one end removed, and a mold discharging mechanism having a cage engaged with a multi-moving table on which the mold is mounted after removing the mold, and tilting the cage together with the moving table to throw the mold from the moving table into the crusher; It is configured as follows.

As mentioned above, the mold is divided into two halves by the wedge piece, and the mold is moved and ejected after the mold is divided by the moving platform and the mold ejecting mechanism, which reduces the labor of the worker and allows the mold to be removed. crushing,
can be processed.

In addition, the work other than feeding the mold into the mold dividing unit and taking out the casting can be done without manual labor, making it suitable for mass production.
This makes it possible to improve work efficiency.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing a mold crushing device according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a free roller for transporting the mold 2, and downstream of the free roller 1, a mold splitting unit 3, a moving table 4, and a mold discharging mechanism 5 are arranged in this order. The above free roller 1, mold dividing unit 3, moving table 4
The mold discharge mechanism 5 is provided downstream of the mold 2 transfer path.

The mold splitting unit 3 is equipped with a power roller 6 for transporting the mold 2, a horizontal crushing mechanism 7 disposed upstream of the power roller 6 (left side in FIG. 1), and a vertical crushing mechanism 8. It is being

The horizontal crushing mechanism 7, as shown in FIG.
It has a pair of wedge plates 9 and 10 facing each other on both sides of the power roller 6. A plurality of wedge pieces 11, 12 are protruded from opposing surfaces 9a, 10a of the wedge plates 9, 10, extending in a direction in which they approach each other. As shown in FIG. 3, the edge directions of the wedge pieces 11 and 12 are aligned in the same direction, thereby preventing a plurality of continuous cracks 56 in the same direction from occurring in the mold 2. can.

On the back side of the wedge plates 9, 10 in FIG.
5, 16 and each guide rod 1 of guides 17, 18
9 and 20 are connected to each other. The hydraulic cylinders 13 and 14 are automatically operated by push button switches (not shown). The wedge plates 9, 10 are horizontal rods 15, 1
By the reciprocating motion of 6, they can move toward and away from each other. Further, the guides 17 and 18 serve to smooth the reciprocating movement of the wedge plates 9 and 10.

Note that, as shown in FIG.
An electric vibrator 21 is attached to the upper surface side. By operating the vibrator 21 to vibrate the wedge piece 11, the growth and promotion of cracks in the mold 2 can be promoted. Further, the vibration isolating rubber 22 absorbs vibrations caused by the vibrator 21,
This protects the hydraulic cylinder 13.
The vertical crushing mechanism 8 has a bar-shaped wedge piece 23 arranged above the power roller 6. Wedge piece 2
3 has an edge shape with a cross-shaped cross section, and the edge position is set to face the center of the upper surface of the mold 2. The wedge piece 23 is connected to a vertical rod 26 of a pneumatic cylinder 25 fixed to the support plate 24. Pneumatic cylinder 25
The operation of the hydraulic cylinders 13 and 14 is the same as that of the above hydraulic cylinders 13 and 14.
Automatically operated with a push button switch,
The wedge piece 23 is moved by the reciprocating movement of the vertical rod 26.
is said to be able to move up and down.

Note that below the power roller 6, a hopper 50 and a sand receiving pan 51 are provided for collecting molding sand that spills from the mold 2 after being divided.

The movable table 4 in FIG.
It is connected to a motor 32 for driving the moving table via 31. A free roller 55 is provided on the top of the movable table 4 at the same height as the para roller 6, thereby easily transferring the mold 2 from the power roller 6 onto the movable table 4. I can do it. A plurality of engaging protrusions 36 extending laterally are provided on both side surfaces of the movable table 4 in a protruding manner.

As shown in FIG. 1, the mold ejection mechanism 5
A cage 33 provided outside the housing 39
, a crusher 40 provided within the housing 39, and a discharge section (not shown) below the crusher. The cage 33 has a frame pair structure in the form of a lattice, and as shown in FIG. has been done. The groove 41 is set at the same height as the engagement protrusion 36, and the movable base 4
When the movable table 4 and the cage 33 are transported into the cage 33 by the transport rollers 29 shown in FIG. . Furthermore, when the movable table 4 is conveyed in the direction away from the cage 33 by the conveyance rollers 29, the engagement protrusion 36 comes out of the groove 41, thereby changing the engagement state between the movable table 4 and the cage 33. It will be canceled. In addition, 46 is cage 3
3, and the other end is a hanging rope connected to a hoisting device (not shown).

A pair of upper rollers 42 and lower rollers 43 are provided on one side of the cage 33 (right side in FIG. 1), and the upper rollers 42 are guided by vertical guide rails 44 provided on the housing 39. You will be guided. The upper end 44a of the guide rail 44 is smoothly bent toward the inside of the housing 39 from the input port 45 of the housing 39. In addition, the lower roller 43
is guided by the guide rail 44 and a guide rail 53 that branches off from the middle. The shape of the guide rail 53 is selected such that the movable platform 4 is tilted into the housing 39 from the input port 45 with the cage 33 raised along the guide rail 44.

A crusher 40 is provided inside the housing 39.
will be installed. Crusher 40 is Hoppa 47
This consists of a crushing section 48 and so on. The broken pieces of the mold 2 introduced from the movable table 4 are collected by a hopper 47, then rotated and vibrated by a crushing part 48, crushed, and collected from a lower discharge part to be reused.

In the above configuration, the free roller 1 is
The self-hardening mold 2 after pouring the molten metal transported thereto is manually fed into the mold splitting unit 3, and the hydraulic cylinders 13, 14 and the pneumatic cylinder 25 are operated by operating a switch to separate the wedge pieces 11, 12, 23. The above-mentioned mold 2 is divided into molds. Therefore, the labor of the worker can be reduced, and the noise caused by conventional hammering work can be prevented. Here, each cylinder 13, 14, 25 may be started by a push button switch to automatically perform the pressing operation by the wedge pieces 11, 12, 23.
Immediately before the cylinders 12, 23 are pushed into the mold 2, each cylinder 13, 14, 25 is temporarily stopped, and after that, while adjusting the horizontal inclination of the mold 2 with respect to the wedge plates 9, 10, the push button switch is activated intermittently. Gradually remove wedge pieces 11, 12,
23 may be pushed into the mold 2.

Moreover, after taking out the casting on the moving table 4,
The transport roller 29 is operated to move the moving table 4 to the cage 33.
Then, the cage 33 is pulled up together with the moving platform 4 using the hanging rope 46, and the housing 3 is lifted up.
Place the mold 2 into the container 9. Therefore, the mold 2 after mold splitting can be continuously crushed and processed without requiring much effort on the part of the operator.

Further, the operation of feeding the mold 2 into the mold splitting unit 3 and taking out the casting can be performed automatically by operating the above-mentioned switch. Therefore, it is suitable for mass production and can improve work efficiency.

Furthermore, in this embodiment, since the vibrator 21 is provided on one wedge plate 9, the wedge piece 1
1 can promote crack growth. Therefore, the mold 2 can be divided efficiently.

Further, the number and shape of the wedge pieces 11, 12, 23 are not limited to those in the above embodiment.

[Effects of the Invention] As explained above, according to the present invention, the mold is divided by the wedge piece, and the mold from which the casting is taken out is thrown into the crusher from the movable base by tilting the movable base. As a result, the molds can be disintegrated and processed continuously and efficiently.

In particular, in the present invention, the mold discharge mechanism has a cage with which a moving table is engaged, and the cage is tilted together with the moving table to remove the mold mounted on the moving table. Since the mold is placed into the shear, after the casting has been removed, the mold is once loaded onto the moving table and is then placed into the crusher without being transferred from the moving table to other parts. Therefore, the mold in a cracked state will not fall out on the way, and can be reliably fed into the crusher.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention;
Figure 2 is a plan view of the mold crushing device of the same embodiment;
The figure is a perspective view showing the main parts of the same embodiment, and FIG.
A sectional view taken along the cutting line - in the figure, Figure 5 is the first
FIG. 3 is a sectional view taken along the cutting line - in the figure. 2... Mold, 3... Mold splitting unit, 4... Moving table, 5... Mold discharge mechanism, 11, 12, 23...
...Wedge piece, 40...Kratshya.

Claims (1)

[Claims] 1. A mold splitting unit having a wedge piece that presses the mold from the outside on a transfer path for transferring the mold, a moving table located downstream of this mold splitting unit that moves the mold after splitting, and A mold discharging mechanism is provided, which has a cage to which a moving table on which the removed mold is mounted is engaged, and tilts the cage together with the moving table to throw the mold from the moving table into the crusher. A mold crushing device featuring: