JPH02185404A - Hardened cement molding equipment - Google Patents

Abstract

PURPOSE:To automate a series of operations for forming each hardened cement body by a method wherein unhardened cement material is filled in each form near the starting end on the forward passage of the load carrier of a conveyer and cement body, which hardened in the form, is demolded at a point near the terminal on its forward passage. CONSTITUTION:A conveyer 1 is formed by spreading a loop-like load carrier 2 such as belt, chain between a pair of rotating shafts 3 and 3'. On the load carrier 2, a large number of forms 4, in each of which unhardened cement material is filled so as to harden itself, are disposed in an array. The form 4 has detachable and openable side walls 5 on both sides toward the running direction of the load carrier 2. A filling device 8 is provided near the starting end on the forward passage of the load carrier 2 and a demolding device 9 is provided near the terminal on its forward passage. The filling device 8 performs the metering of unhardened cement material and its casting in the form for filling. The demolding device 9 performs the demolding of the hardened cement body in the form the side walls of which are removed, by pushing the body out of the form with a par-like or plate-like body, which reciprocates normal to the running direction of the load carrier.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a molding device for a hardened cement body.

(Problems to be solved by conventional technology and invention) JIS R5201 is one of the evaluation items for cement quality.
The strength is measured by the test method specified in 2.

Strength tests use specimens obtained by curing cement in formwork of a specific size. The strength of this specimen varied depending on how the cement was filled into the mold and the surface finish of the specimen, and it had the disadvantage that it was greatly affected by individual differences. Furthermore, since a large number of the above-mentioned specimens were produced, there was a problem in that it took a lot of labor and time to prepare the specimens.

(Means for Solving the Problems) As a result of various studies to solve the problems in manufacturing the above-mentioned specimen, the present inventors succeeded in automating the manufacturing of the above-mentioned specimen, This led us to propose the present invention.

That is, the present invention provides a conveyor in which a formwork for receiving and curing uncured cement is arranged in parallel on a loop-shaped load carrier extending between a pair of rotating shafts, and a conveyor on the outbound side of the load carrier. A filling device is provided near the starting end to fill the uncured cement material into the formwork, and a filling device is provided near the end end on the outbound side of the load carrier for demolding the hardened cement material that has hardened in the formwork. This is a molding device for hardened cement consisting of a demolding device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus for molding a hardened cement body of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram showing a molding apparatus for a hard cement body according to the present invention. The conveyor 1 consists of a loop-shaped load carrying body 2 such as a belt or chain that is stretched between a pair of rotating shafts 3 and 3', and generally a conveyor known as a belt conveyor or chain conveyor is used. be done.

On the load carrier 2, a large number of formworks 4 are arranged in parallel, in which uncured cement is filled and hardened. On the outward and return trips of the load carrier, it is preferable to provide adjacent molds so that they are in contact with each other, since a large number of molds 4 can be arranged in parallel on the load carrier 2. The bottoms of these formworks 4 are solidly attached to the load carrier 2, and adjacent formworks are not fixed to each other. Adjacent formworks therefore move away from each other on the rotation axes 3 and 3' along the circumference of the rotation axis.

In Figure 1, the shape of the cross section of the formwork taken along a plane parallel to the longitudinal direction of the conveyor and perpendicular to the load carrier is the form, and the longitudinal direction of the formwork is perpendicular to the plane of the paper. .

Therefore, with the molding apparatus shown in FIG. 1, a square prism-shaped hardened cement body can be obtained. When molding a columnar hardened cement body, as in the molding apparatus shown in FIG. It is preferable to dispose the hardened cement body in parallel so that it is easy to demold the hardened cement body using a demolding device, which will be described later.

Although FIG. 1 shows a mold for molding a square prism hardened cement body, by changing the shape of the mold, hardened cement bodies of various shapes can be molded.

The formwork 4 has a detachable or openable/closeable side wall 5 (see FIGS. 2 and 3, not shown in FIG. 1) on the side in the traveling direction of the load carrier 2. The side wall 5 is pressed against the side surface of the formwork 4 by a roller or other arbitrary means before filling the uncured cement material, and prevents the uncured cement material filled into the formwork 4 from leaking from the formwork. On the outbound side of the load carrier 2, the side wall 5 moves together with the formwork 4 while being pressed against the side surface of the formwork 4, and removes the hardened cement material from the formwork before demolding it with a demolding device. It is removed from the frame 4 to facilitate demolding of the hardened cement body.

The side wall 5 can exhibit the above function by having the following mechanism. As shown in FIG.
A loop-shaped belt is placed on the side of the formwork 4. As shown in FIG. The interval between the zero rotation shafts 6 and 6', which are the mechanisms for moving the side wall 5, may be determined depending on the position of the formwork where the side wall 5 is required. The side wall 5 can be pressed against the side surface of the formwork 4 by rollers 7 . Moreover, the side wall 5 can also be made into the following mechanism. That is, as shown in FIG. 3, by rotating the side wall in the lateral direction of the formwork around an axis parallel to the side surface of the formwork 4, the side wall 5 is rotated so that the side surface of the formwork is opened or sealed. This is a mechanism attached to the formwork 4. Any method can be used to attach the formwork 4 and the side wall 5 to the formwork 4 so that the side wall 5 can be opened and closed. For example, as shown in FIG. An example of this method is to fix it with a hinge. In this case, it is preferable to install the side wall with the lower end of the side wall protruding further downward than the axis of rotation of the side wall.In this way, the side wall can be easily opened and closed by pushing the lower end of the side wall. can be done.

The side wall 5 can be pressed against the side surface of the formwork 4 by means of a roller rough, similar to the method described above.

The material of the formwork 4 and the side walls 5 is a flexible synthetic material that has weak adhesion to the hardened cement material so that the hardened cement material can be easily removed from the mold, and that can also be removed by bending the material. As such a synthetic resin, which is preferably a resin, polytetrafluoroethylene, polyurethane, phenol resin, etc. are preferably employed. The formwork and side walls may be entirely made of synthetic resin as described above, but
Only the portion that comes into contact with the hardened cement body may be coated with the above synthetic resin.

The hardened cement body molding apparatus of the present invention is provided with a filling device 8 for filling uncured cement into a mold, and a demolding device 9 for demolding the hardened cement hardened in the mold. There is. The filling bag W8 is provided near the starting end of the load carrier 2 on the forward path side, and the demolding device 9 is provided near the end of the load carrier 2 on the forward path side.

The filling device 8 performs a filling operation by weighing uncured cement and pouring the uncured cement into the mold.The demolding device 9 reciprocates in a direction perpendicular to the traveling direction of the load carrier. The mold is removed by pushing out the hardened cement in the formwork from which the side walls have been removed using a rod or plate. Furthermore, when the above-mentioned synthetic resin is used as the formwork, when the formwork 4 is positioned on the rotational shaft 3', the rotational shaft 3'
It is also possible to demold the hardened cement body by curving the bottom surface of the formwork 4 convexly upward along the circumference of '.

In this case, as shown in FIG. 4, by extending the walls 13 of adjacent formworks 4 downward, the walls 13 of adjacent formworks 4 on the rotating shaft 3' are pressed against each other downwardly. As a result, the upper part of the wall 13 is opened to cause separation between the hardened cement body and the wall 13, thereby facilitating demolding of the hardened cement body.

The molding device for a hardened cement body of the present invention may be equipped with any other device depending on the purpose. For example, when manufacturing a specimen for strength testing of cement mortar as a hardened cement body, A device 10 for poking unhardened cement is provided after the filling device 8, and by poking the unhardened cement in the formwork with a rod-shaped body that moves up and down, it is possible to fill the unhardened cement to the corners of the formwork. can.

In addition, a surface finishing device 11 is installed in the middle of the outward journey of the cargo carrier to scrape off excess cement by reciprocating the surface of the cement hardened material that has not fully hardened. The surface can be finished.

Furthermore, in order to clean the inside of the formwork after demolding, a demolding device 9 is installed.
A cleaning device 1 that rotates a brush by a motor after
2 can also be provided.

The hardened cement bodies formed by the apparatus of the present invention include hardened cement bodies, so-called hardened cement mortar bodies made of cement and fine aggregate, and hardened concrete bodies containing coarse aggregates. Included.

(Effects of the Invention) As can be understood from the above explanation, by using the hardened cement body forming apparatus of the present invention, a series of operations for molding a hardened cement body can be performed automatically, and little labor is required. In addition, it is possible to reduce test errors caused by differences in individual proficiency levels that occur in conventional methods.

[Brief explanation of the drawing]

FIG. 1, FIG. 2, and FIG. 3 are a front view and a perspective view schematically showing a molding apparatus for a hardened cement body of the present invention. FIG. 4 is a front view of the formwork on the rotating shaft. In the figure, l is a conveyor, 2 is a load carrying body, 3 and 3' are conveyor rotating shafts, 4 is a formwork, 5 is a side wall, 6 and 6' are side wall rotating shafts, 7 is a roller, and 8 is a filling device , 9 is a demolding device, 10 is a punching device, 11 is a surface finishing device, 12 is a cleaning device, and 13 is a wall of the formwork.

Claims (1)

[Claims] (1) A conveyor with a formwork for filling and curing uncured cement on a loop-shaped load carrier stretched between a pair of rotating shafts, and a formwork installed near the starting end of the load carrier on the outward path side. a filling device for filling uncured cement into a formwork, and a demolding device for demolding the hardened cement that has hardened in the formwork, which is provided near the end of the outbound side of the load carrier; A molding device for hardened cement.