JPH08229922A - Raw material weighing and supply apparatus of cement mortar molded product - Google Patents

Abstract

PURPOSE: To minimize the generation of product inferiority by always holding a raw material to a homogenous state by providing a plurality of stirring blades stirring the raw material housed in a raw material storage container in an up-and-down direction. CONSTITUTION: A raw material supply hole 22 is provided to a part of the bottom 21 of a raw material storage container 2 and motors 4a, 4b reversely rotated each other are respectively fixed to the central part and shaft 23 of a motor stand 24 in opposed relationship. Stirring blades 6... are rotated centering around a rotary shaft 41 along with arms 5a almost in contact with the inner wall surface of the container 2 by the upper motor 4a and the lowermost stirring blade 6 is rotated in slide contact with the bottom 21 of the container 21 to function as a sliding cutting plate. An arm 7a having vertical bars 72, 72 is fixed to the rotary shaft 42 of the lower motor 4b and two stirring blades 8, 8 are provided to each of the vertical bars and rotated almost in contact with the surface of the shaft 23. By providing the stirring blades in an up-and- down direction in a multistage fashion, the raw material on the inner surface side of the container 2 can be also always moved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a raw material metering and supplying device for cement mortar molded products.

[0002]

2. Description of the Related Art For example, cement mortar molded articles generally used as roof tiles and outer wall materials are obtained by mixing and kneading a mixture of cement and water with aggregates such as sand and reinforcing fibers as needed. The raw material obtained in this manner is put into a molding die and molded by a dewatering press method or the like.

In order to perform such molding continuously more efficiently, a raw material metering / supplying device as disclosed in Japanese Utility Model Publication No. 6-34081 has already been proposed.

That is, as shown in FIG. 5, the raw material metering and supplying device 100 temporarily puts the raw materials uniformly mixed and kneaded by the mixing and kneading device in the raw material storage container 101, and The raw material is fed into the measuring mass 103 through the provided raw material supply hole 102, and after a fixed amount of the raw material is quantified by the measuring mass 103, the raw material can be supplied one after another to the forming die.

[0005]

By the way, in the conventional raw material metering and feeding device 100, the two slidable plates 104 are centered on the central axis of the raw material storage container 101 via the motor (not shown) and the arm 106. In addition, since the raw material storage container 101 rotates while slidingly contacting the bottom of the raw material storage container 101 to perform the scraping operation, the raw material can be accurately supplied from the raw material supply hole 102 to the weighing mass 103. Moreover, the rotation of the scraping plate 104 also allows the raw materials to be stirred at the same time.

However, even if it can be said that the raw material can be stirred by the scraping plate 104, as described above, the scraping plate 1
Since 04 is provided only along the bottom of the raw material storage container 101, it is inevitable that only the raw material near the bottom of the raw material storage container 101 can be stirred.

Therefore, there is a possibility that the upper raw material, especially the raw material of the surface portion, may be dried or cured before being fed from the raw material feed hole 102 to the measuring mass 103, resulting in defective molding. In view of such circumstances, the present invention provides a raw material metering / supplying device for cement mortar molded articles, which can always keep the raw materials put in the raw material storage container homogeneous and reduce defects in the molded articles. It is an object.

[0008]

In order to achieve such an object, a raw material metering and feeding device for cement mortar molded articles according to the present invention is provided with a raw material storage container having a raw material feeding hole at the bottom, and the raw material feeding container. In a raw material measuring and feeding device for a cement mortar molded article, which comprises a measuring mass for measuring the raw material supplied from a hole, the raw material stored in the raw material storage container is agitated by rotating around the central axis of the raw material storage container. A plurality of stirring blades are provided in the vertical direction.

In the above structure, it is preferable that the vertically adjacent stirring blades rotate in opposite directions, and that the loci of rotation thereof overlap at least partially.

[0010]

According to the above structure, not only the vicinity of the bottom of the raw material storage container but also the upper raw material is stirred by the stirring blade.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing the embodiments thereof. 1 and 2 show an embodiment of a raw material measuring and supplying device according to the present invention. As shown in FIGS. 1 and 2, the raw material metering / supplying device (hereinafter referred to as “apparatus” only) 1 a includes a raw material storage container 2 and a measuring mass 3.

The raw material storage container 2 has a cylindrical shape with a bottom, a raw material supply hole 22 is provided in a part of the bottom 21, and a shaft 23 is vertically provided at the center of the bottom 21. A gate-shaped motor mount 24 is suspended above the raw material storage container 2 so as to extend diagonally across the raw material storage container 2.

Motors 4a and 4b are fixed to the center of the motor mount 24 and the shaft 23, respectively, so that the rotary shafts 41 and 42 face each other. Both motors 4a, 4
b is when one motor 4a (4b) is rotating forward,
The other motor 4b (4a) is adapted to reversely rotate, and the forward and reverse of the motor 4b (4a) are reversed at regular intervals.

A first arm 5a having vertical bars 52, 52 on both sides of a horizontal bar 51 is fixed to the rotary shaft 41 of the upper motor 4a at the center of the horizontal bar 51. Further, each of the vertical bars 52, 52 is integrally provided with three stirring blades 6, 6, 6 so as to be arranged at equal intervals in the vertical direction.

That is, by rotating the upper motor 4a, the stirring blades 6, 6, 6 rotate together with the first arm 5a about the rotation shaft 41. Moreover, the three stirring blades 6, 6, 6 rotate while one ends thereof are substantially in contact with the inner wall surface of the raw material storage container 2, and the stirring blade 6 at the bottom end is located on the bottom 21 of the raw material storage container 2. Rotate while sliding. That is,
The stirring blade 6 at the bottom end also functions as a scraping plate.

On the other hand, on the rotary shaft 42 of the lower motor 4b, a second arm 7a having vertical bars 72, 72 on both sides of a horizontal bar 71 shorter than the horizontal bar 51 of the first arm 5a is provided on the horizontal bar 71. It is fixed at the center.

Further, each of the vertical bars 72, 72 is integrally provided with two stirring blades 8, 8 at equal intervals so as to be vertically aligned. Moreover, the two stirring blades 8 and 8 rotate while one ends thereof are substantially in contact with the outer wall surface of the shaft 23, respectively, and a part of the blades is located on the upper stirring blade 8 as shown in FIG. Of the three stirring blades 6, 6, 6 on the side, the lower stirring blade 8 passes through the gap 62 between the central stirring blade 6 and the upper stirring blade 6, and the lower stirring blade 8 is the three stirring blades on the first arm 5a side. Of the 6, 6, 6, the gap 63 between the central stirring blade 6 and the lower stirring blade 6 is passed.

That is, the rotation loci of the stirring blade 6 and the stirring blade 8 partially overlap in three dimensions.

The measuring mass 3 is provided below the raw material supply hole 22 and has a shutter 31 which can be opened and closed at the lower end. This device 1a is configured as described above, and like the conventional device, the raw material put in the raw material storage container 2 is fed from the raw material supply hole 22 to the measuring mass 3 by a predetermined amount and is measured. 31 is opened so that a certain amount of raw material is fed into the molding die.

Moreover, since the stirring blades 6, 6, 6 and the stirring blades 8, 8 are provided in multiple stages in the vertical direction, regardless of the amount of the raw material in the raw material storage container 2, the raw material on the surface side (upper part) Can be constantly moved up to. Therefore, it is possible to prevent hardening of the surface of the raw material due to drying and aggregation of the reinforcing fibers in the raw material. In addition, the stirring blades 6, 6, 6 and the stirring blades 8, 8 partially intersect three-dimensionally, and the first arm 5a and the second arm 7a always rotate in opposite directions. , Agitating blade 6 and agitating blade 8 at the time of crossing, even if the raw material becomes a little hard due to the reaction of cement
Since it will be cut by the above, it will be possible to minimize the occurrence of product defects due to abnormalities in the raw material that are agitated and mixed into the raw material again without solidifying.

FIGS. 3 and 4 show another embodiment of the raw material metering / supplying device for cement mortar molded products according to the present invention. As shown in FIGS. 3 and 4, in this device 1b, the horizontal bars 53 and 73 of the first arm 5b and the second arm 7b are fixed to the rotating shafts 41 and 42 at one end, and one vertical bar is provided at the other end. It is the same as the above embodiment except that the bars 54 and 74 are connected.

The raw material metering / supplying device for cement mortar molded products according to the present invention is not limited to the above embodiment.
For example, in the above embodiment, the raw material supply hole and the weighing mass are one set, but two or more sets may be provided. Further, in the above embodiment, each stirring blade group is rotated by a separate motor, but it may be rotated by one motor by combining gears.

[0023]

EFFECT OF THE INVENTION Since the raw material metering and supplying device for cement mortar molded articles according to the present invention is constructed as described above, the raw material put in the raw material storage container is not limited to the vicinity of the bottom of the raw material storage container. Even the upper part is agitated by the agitating blades. Therefore, the raw material is always kept in a homogeneous state, and the occurrence of product defects due to abnormal raw material can be minimized.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a raw material measuring and supplying device for a cement mortar molded product according to the present invention.

FIG. 2 is a plan view of the raw material measuring and supplying device of FIG.

FIG. 3 is a cross-sectional view showing another embodiment of the raw material measuring and supplying device for a cement mortar molded product according to the present invention.

FIG. 4 is a plan view of the raw material measuring and supplying device of FIG.

FIG. 5 is a cross-sectional view showing a conventional raw material measuring and supplying device.

[Explanation of symbols]

 1a Raw material measuring and supplying device 1b Raw material measuring and supplying device 2 Raw material storage container 3 Measuring mass 6 Stirring blade 8 Stirring blade 22 Raw material supply hole

Claims (1)

[Claims] 1. A raw material storage container having a raw material supply hole at the bottom,
In a raw material measuring and supplying device for a cement mortar molded article comprising a measuring mass for measuring the raw material supplied from the raw material supply hole, the device is housed in the raw material storage container by rotating around the central axis of the raw material storage container. A raw material metering and supply device for cement mortar molded articles, characterized in that a plurality of stirring blades for stirring the raw material are provided in the vertical direction.