JPS5940136Y2 - casting mold - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved casting mold, which is used for ladle and recovery mold.

A mold used for a ladle for molten metal, ferroalloy, or other alloy, or a recovery mold generally has a pair of trunnions and a mold on the upper side of the mold body to suspend the mold body by a foliage or the like. Several equally spaced supporting legs, a spout used for pouring molten metal into the opening edge and discharging slag, etc., are cast integrally with the mold body.

Because of this complex integrated shape, thermal stress concentrates at the attachment points of the trunnion and legs during casting into a mold or receiving metal, causing cracks to occur, resulting in an increase in the frequency of cracks. is also larger than expected.

However, even if the cracks are small, the mold cannot be repaired.
Moreover, since it involves safety risks, the use of the mold has to be discontinued, and as a result, the life of the mold is shortened, resulting in significant uneconomical use.

The present invention has been devised for the purpose of improving the disadvantages of the above-mentioned conventional casting molds and providing a casting mold that can be adopted both technically and economically.

When devising the present invention, the following items were considered as conditions that should be met.

(b) Reduce the number of areas where thermal stress is concentrated; υ) Partial repair possible; (c) Excellent safety; and (d) Economical. Satisfies the above conditions. The casting mold of the present invention was constructed as follows.

That is, the trunnion part and the leg part are separated from the mold body, only the mold body is cast and molded, and the mold suspension ring body with the trunnion part and the leg part are manufactured separately and attached to the mold body respectively. The reason lies in the structure.

The concrete structure thereof is shown in the attached drawings, and will be explained below with reference to the drawings.

FIG. 1 is an assembled sectional view showing the main parts of the present invention, and FIG. 2 is a plan view showing the entirety.

In the figure, reference numeral 1 denotes a mold body, which has an inverted bell shape, and has a mold opening 1b around the opening.

The upper periphery of the mold body forms a bulging annular band edge 1a.

Reference numeral 2 denotes a mold hanging ring body that represents the entire mold, and this ring body, as shown in FIGS. 3, 4, and 5,
The outer ring plate 2a and the inner ring plate 2b are separated by an appropriate distance to form upper and lower annular plates 2c.

2d to form the mold suspension ring body 2, and the protruding portions 1e are provided facing each other at the bottom of this ring body, and a trunnion 33' is provided at the center of the side of the protruding portion 1e via a reinforcing plate. They are fixed to each other.

On the inside of the inner ring plate 2b, supporting plates 2f having an inscribed surface having the same slope angle as the slope of the mold body are disposed at equal intervals, and furthermore, the upper surface of the mold suspension ring body is Several supporting metal fittings 4 are equally divided into parts.

This item should be inserted through the bolt hole as shown in Figure 1).
A ring body 2 attached to the side surface of the annular band edge 1a at 4a for suspending the mold is supported and fitted to the side surface of the mold on the lower side of the bulging annular band edge 1a of the mold body. There is a slight gap between the support plate 2f of the ring and the surface of the mold in the assembled state so that when the ring is lifted, the load of the mold is not applied through the support plate 2f.

The function of the support plate is to support the mold when tilting.

Several clamp fittings 5 are installed on the lower side of the ring body 2 for hanging the mold.
．． ．． 5' is provided.

Reference numeral 6 indicates a mold pedestal representing the whole, and this pedestal, as shown in FIGS. 6 and 7, has a side surface of the round holed disc body 6a and the side surface of the cylindrical holding cylinder 6. A plurality of leg plates 6b having upper end surfaces matching the shape of the bottom surface of the mold body are radially arranged upright over the entire length, and a chain body 8, which will be described later, is joined to these plates with bolts.

Reference numerals 7a and 7a' in FIG. 7 are shafts for hooking auxiliary hoisting hooks of a crane or the like when tilting the mold.

The mold holder 6 is connected to the lower annular plate 2d of the suspension ring body and the clamp fittings 5, 5'□ and 7, 7' provided on the holder 6, respectively, as shown in a part of FIG. chain body 8 to be stopped
, 8' are held at the bottom of the mold body.

With the above configuration, when the lifting element is hooked to the trunnion provided on the mold lifting ring body and lifted, the load of the mold is transferred from the mold pedestal 6 to the trunnion via the chain body 8. It will take a while.

This helps prevent the mold from separating in the middle and preventing the molten metal from flowing out, even if the mold cracks when the molten metal is placed in the mold. Excellent safety.

When standing still, only the load of the hanging ring body is supported by the supporting metal fittings and their bolts.

Furthermore, although the mold holder holds the mold, it is separated from the mold body via the chain.

According to the present invention, the trunnion part and the leg part are separated from the mold body, so the shape of the mold body is simplified and damage caused by thermal stress is reduced.

Therefore, safety in use is significantly improved.

Furthermore, even if components other than the mold body are damaged, they can be repaired, and the life of the mold as a whole can be significantly improved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is an assembled sectional view showing the main parts of the invention, Fig. 2 is a plan view showing the whole, and Fig. 3 is the configuration of the mold suspension ring body. A cross-sectional view showing
FIG. 4 is a plan view thereof, FIG. 5 is a sectional view taken along line xx' in FIG. 4, FIG. 6 is a sectional view of the mold holder, and FIG. 7 is a plan view thereof. DESCRIPTION OF SYMBOLS 1...Mold body, 1a...Bulging ring band edge, 2...Mold hanging ring body, 3...
・Trunion, 4... Support metal fittings, 4a...
... Bolts, 5, 7... Bent clamp fittings, 6...
...Mold holder, 6a...Disc body, 6b...
... Leg plate, 6c... Holding tube, 8... Chain body.

Claims (1)

[Scope of utility model registration request] The casting mold body 1 has an inverted bell shape, and the upper peripheral part forms a bulging annular band-shaped edge 1a, and the lower part of the bulging annular band-shaped edge 1a is provided with a ring structure 8-( j!!A mold hanging ring body 2, which has a trunnion 3 on the first part and a clamp metal fitting 5 on the lower side facing each other, is supported and fitted via the support metal fitting 4 and bolts 4a, and is further attached to the plate body. A plurality of leg plates 6b having upper end surfaces matching the shape of the bottom of the mold are erected radially on the surface 6a, and a mold pedestal 6, which is provided with clamp fittings 7 facing each other, is attached to the suspension ring body and the metal plate. A casting mold that is held at the bottom of the mold body by a chain 8 that is secured to each clamp fitting 5, 7 provided on a mold holder.