JP2652145B2 - Demolding and reversing method and apparatus of cast molded product - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for inverting and releasing a cast product when producing a large-sized concrete product or plastic product.

[0002]

2. Description of the Related Art When manufacturing a large-sized concrete product, for example, a cylindrical pipe for sewerage, it is necessary to invert it at the time of demolding. Conventionally, an inverting device for inverting 90 ° as shown in FIG. Such a method has been used in which a dedicated machine for reversing is lifted using a crane provided in a factory and then reversed in the air.

However, not only are both reversing devices expensive, but also the generally used reversing machine shown in FIG. 2 becomes larger in proportion to the weight of the product to be reversed, and furthermore, the center of gravity of the product is reduced. Because it rotates on the axis that passes, it is difficult to identify the center of gravity axis, or if the center of gravity axis moves each time, it is impossible to reverse it or it is dangerous to work in the air However, it was difficult to ensure safety.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, casting can be performed on the ground, the structure of the apparatus can be extremely simple, and safety, economy and workability can be greatly improved. An object of the present invention is to provide a method and an apparatus for demolding and reversing a product.

[0005]

Means for Solving the Problems The present invention has been made to solve the above-mentioned problems, and a first invention is to provide an outer mold for a casting product, providing an appropriate number of rollers on one side, and An upper and lower outer frame-side bearing and a wire hook for reversing are provided, and a base is provided at the center with a removable temporary shaft and a base-side bearing connected to the outer frame-side bearing. First, after connecting the outer frame side bearing portion provided at the lower portion of the outer frame to the base side bearing portion with the temporary shaft, the reversing wire is hung on the reversing wire hook portion, and the reversing wire is pulled up. The temporary shaft was turned over by 90 °, the inverted outer frame was moved to the opposite side on the base after removing the temporary shaft, and this time the temporary shaft was initially located above the bearing part of the base. After inserting it into the outer frame side bearing and connecting it, put a wire on the wire ° a demolding inversion method molding casting, characterized in that to fall.

According to a second aspect of the present invention, an appropriate number of rollers are provided on one side, an outer frame side bearing portion and a reversing wire hook portion are provided on the upper and lower sides, and a reversing wire hook is provided on the opposite side. An apparatus for removing and reversing a cast molded product comprising a combination of an outer mold frame of a cast molded product and a base provided at the center with a base-side bearing portion connected to the outer die-side bearing portion with a removable temporary shaft. is there.

[0007]

According to the present invention, the temporary shaft is turned over by 90.degree., The temporary shaft is removed from the bearing portion, the form is moved to the original position, and the temporary shaft is inserted again in the same direction as the temporary shaft. By turning over 180 °, the crane is turned 180 °, and a crane provided at the factory is used. However, since it is rolled on the ground, there is little danger.

[0008]

FIG. 3 is a front view, FIG. 4 is a plan view thereof, and FIG. 5 is a left side view of FIG.

In the figure, 1 is an outer formwork, 2 is a base,
Four rollers 3, 3, on one side (left side in FIG. 3) of the outer formwork 1.
3, 3 and two upper and lower outer frame side bearings 4, 4, 4, 4 and reversing wire hooks 5, 5, 5 are provided. On the opposite side, reversing wire hooks 6 are provided. , 6 are provided.

The base 2 is provided at its center with base-side bearings 8, 8 which are connected to the outer frame-side bearings 4, 4, 4, 4 by detachable temporary shafts 7, 7. I have.

Reference numeral 9 denotes a reversing wire.

Next, the procedure of reversing will be described. First, as shown in FIG. 3, a material such as concrete or plastic is poured, a hardened mold A is placed on the base 2, and the temporary shaft 7 is mounted on the bearing portion. Insert in 4 and 8. The position on the base may be on the right side or the left side as shown in FIG.

Next, as shown in FIG. 3, the reversing wire 9 is hung on the reversing wire hooks 6, 6 provided on the opposite side of the upper reversing wire hook 5, and is pulled up by a crane provided at the factory. Roll 90 ° as shown in FIG.

Next, the temporary shaft 7 is removed, and the base 2 is moved to the opposite side, that is, to the original position, as shown in FIG. The temporary bearings 7, 7 are engaged with the base-side bearings 8, 8, respectively.

Then, the reversing wire 9 is hung on the reversing wire hooks 6, 6 and 5, 5 and lifted by a crane provided at the factory in the same direction at 90 ° around the temporary shaft 7 as an axis.

Since the mold A is completely turned by the above operation, if the mold A is lifted, the mold A can be removed.

[0017]

As described above, according to the present invention, since a factory-installed crane is used to turn over the ground, the workability and safety are significantly improved as compared with the case where the conventional apparatus is used. is there.

Further, in the present invention, the bearing 4, the roller 3, and the reversing wire hooks 5, 6 are attached to the outer mold 1, as can be seen at a glance from the conventional apparatus shown in FIGS. 1 and 2. Also, since it has a very simple structure in which the bearing portion 8 is provided on the base 2, not only is it easy and convenient to use, it is also economical, and it is practically useful as a reversing method and apparatus in practice. It is expensive.

[Brief description of the drawings]

FIG. 1 is a side view of a conventional 90 ° demolding reversing device.

FIG. 2 is a front view of a conventional 360 ° demolding reversing device.

FIG. 3 is a front view of the embodiment of the present invention.

FIG. 4 is a plan view of the embodiment of the present invention.

FIG. 5 is a left side view of the embodiment of the present invention.

FIG. 6 is a diagram showing a state after rolling by 90 °.

FIG. 7 is a diagram showing a state after moving to an original position.

FIG. 8 is a diagram showing a state after 180 ° inversion.

[Explanation of symbols]

 A Formwork 1 Outer formwork 2 Base 3 Roller 4 Outer formwork side bearing part 5 Inversion wire hook 6 Inversion wire hook 7 Temporary shaft 8 Base side bearing part 9 Inversion wire

Claims (2)

(57) [Claims] 1. An outer mold for a casting product, which is provided with an appropriate number of rollers on one side, a bearing on the outer mold side and a wire hook for reversing, and a wire hook for reversing on the opposite side. The base is provided with a base-side bearing portion connected to the outer-form-side bearing portion with a removable temporary shaft at the center, and an outer-form-side bearing portion provided first below the outer formwork. After the temporary shaft is connected to the bearing portion on the base side, the reversing wire is hung on the reversing wire hooking portion, the reversing wire is pulled up, and the temporary shaft is turned over by 90 ° and the temporary shaft is removed. Move the inverted outer mold frame to the opposite side on the base, and then insert the temporary shaft into the bearing part on the base side and into the outer mold side bearing part that was first on the top, and connect it. Demolding of cast products characterized by hanging wires over hooks and turning over 90 ° The inversion method. 2. An outer mold of a cast product in which an appropriate number of rollers are provided on one side, an outer frame side bearing portion and a reversing wire hook portion are provided on the upper and lower sides, and a reversing wire hook is provided on the opposite side. An apparatus for reversing a cast molded product, comprising a combination of a frame and a base provided at the center with a base-side bearing connected to the outer-type bearing with a removable temporary shaft.