JPS5850850B2 - concrete block forming machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a non-extractable concrete block molding machine using vertical compression, and in particular, the lower mold plate and pressure plate having protrusions on the lower table frame mechanism can be moved up and down, respectively. They can be arranged in parallel if possible, and cooperate with the upper press frame to effectively perform pressure compression molding from the vertical direction.

Conventional non-removal type concrete flock compression molding machines place the mold surface on the lower receiving plate, fill it with concrete material, lower the upper press frame with the lower table frame fixed, and perform compression molding. It is usual to do
At this time, in order to increase the vibration effect on the mold surface and prevent any negative effects on the pedestal, a lower table frame and an upper press frame, which hold the mold surface from above and below it, are placed on the pedestal. Spring suspension is also used, but due to the compression and vibration caused by this upper press frame, it is difficult to sufficiently compress hardened concrete material with low fluidity, especially in the part that contacts the lower receiving plate surface. It was impossible to completely eliminate defects resulting in a low-density coarse structure.

Furthermore, in the conventional mold surface used to manufacture hollow concrete blocks with upper and lower through-holes, the core mold for forming the through-holes is suspended by hanging fittings at the upper part of the mold surface. Grooves formed by the hanging metal parts remain on the top surface, which reduces the strength of the product due to the iron parts, and defects that impair the appearance of the product cannot be avoided.

In order to improve the above-mentioned defects of the non-extractable concrete block molding machine, the present invention provides a lower mold plate on which a protruding mold to be inserted into the mold surface is arranged on the lower table frame, relative to the table frame. A lower table frame mechanism that is movable up and down by pressure, and a pressure plate is provided on the upper surface of the lower mold plate with a through hole into which the protrusion mold can fit, and is movable up and down by pressure with respect to the lower mold plate. A molding machine that can efficiently produce high-quality products with uniform density and no scratches on the surface by compressing the concrete material filled in the mold surface from above and below in synchronization with the upper press frame. It is.

Among them, if the protruding mold provided on the lower mold plate mentioned above used in the present invention has a height that allows it to protrude from the upper surface 1 of the mold surface, a hollow concrete block having through holes can be obtained. By lowering the height, it is possible to create a hollow block with a bottom.In this case, if the pressing surface of the upper press frame is provided with a corresponding protrusion, the position and thickness of the bottom wall can be adjusted. can also be formed.

The embodiments shown in the drawings will be explained below.

FIGS. 1 to 3 show a lower table frame mechanism which is the main part of the present invention, and as shown in FIG. This table frame mechanism is assembled to perform a compression molding process on the vibration molding mold surface that has been set up, and constitutes a concrete block molding machine. A base plate 4 is fixed to the base plate 4, and side plates 1, 1' standing upright on both sides of the base plate 4 are provided.

As shown in FIG. 4, the table frame 12 has side plates 1,
It may be fixed to 1'.

An elastic band 2 is provided on the upper end surface of this side plate to support a mold surface 22 for vibration molding when the table frame 12 is raised, and four guide rods 11 are planted in the four corners of the base plate 4. be erected.

A core protrusion mold 3 is disposed on a lower mold plate 10 which is guided by guide rods 11 and moved up and down by hydraulic cylinders 6°C provided on both sides of the base plate 4, and a core projection mold 3 is disposed on the upper surface of the lower mold plate 10. The hydraulic cylinder 5 is connected to the hydraulic cylinder 5 provided at the center of the base plate 4 guided by the rod 11, and is connected to the upper ends of two continuous rods 7, 7' located between the core protruding molds 30, so that it can move up and down. A pressure plate 18 is provided, and a protruding mold 17 that fits into the lower part of the cavity of the mold surface 22 is fixed on the upper surface of the pressure plate 18 .

A lower mold plate 10 is attached to the press mold 17 and the pressure plate 18.
A through hole 16 into which the upper core projection mold 3 can be inserted is provided.

This example is a hollow concrete block C with three upper and lower holes.
This shows a molding machine that simultaneously manufactures three molds, in which three press molds 17 are arranged side by side on a pressure plate 18 at intervals to accommodate the inner wall and partition wall of the mold surface 22 for vibration molding.

The core protrusion mold 3 has a tapered surface whose diameter is slightly reduced toward the upper end, and when the lower mold plate 10 is completely raised, the core protrusion mold 3 extends from the upper surface of the pressing mold 17 to approximately the mold surface 22. It has a height that can protrude by the thickness.

Therefore, this table frame mechanism is raised by the hydraulic cylinder 8, and as shown by the dashed line in FIG.
Lift up by touching the upper elastic bodies 2, 2' of the side plate 1.1'.

The lower mold plate 10 is raised so that the upper surface of the pressing mold 11 slightly fits into the mold surface 22 and the core projection mold 3 protrudes to the uppermost position,
A feed material box 23 containing concrete material is entered from the machine side into the upper surface of the mold surface 22, and vibration is applied to the mold surface 22 to fill the concrete material into the space of the mold surface 22 into which the core projection mold 3 is inserted. After retracting and removing the material feed box, the upper press frame 13 is lowered and the upper press die 21 pressurizes the upper part, and the hydraulic cylinder 5 of the lower table frame mechanism raises the pressure plate 18 to press the die surface 22. The concrete material inside is compression molded from above and below.

During the entire or initial stage of this compression molding process, the mold surface 22
The eccentric rotating shaft 24 driven by the motor 25 is rotated to apply vibrations to improve and make the product density uniform and to achieve a smooth finish on the outer wall of the product.

Needless to say, the pressing surface of the upper pressing die 21 is provided with relief grooves having a depth suitable for the inner wall of the molding surface 22, the partition wall, and the inserted core protrusion 3.

The lower table frame 12 and the upper press frame 13 are provided so as to be movable up and down by the guide rod B of the machine frame F, as in the conventional case, and the table frame 12 and the press frame 13
are connected by a piston rod L of a hydraulic cylinder mechanism, and move up and down relative to each other.

At the same time as the compression molding process is completed, the hydraulic cylinder 6 is rapidly moved down to remove the core protruding mold 7 from the mold surface 22 together with the lower mold plate 10, and at the same time the hydraulic cylinder 5 is moved down to remove the core projection mold 7 from the mold surface 22. The upper surface of the pressing mold 17 separates from the lower part of the molding surface 22 supported on the pedestal 14, creating a gap slightly larger than the thickness of the receiving plate 20, at which point the roller 26 provided on the machine side and its The receiving plate 20 is inserted into the above-mentioned gap by the receiving plate insertion mechanism 15, 15' consisting of the receiving plate mounting insertion rod 27 which can reciprocate above, and is placed on the press die 17 of the pressure plate 18, and in this state. When the hydraulic cylinder 8 is moved downward, the molded product C is placed on the receiving plate 20 and is removed from the mold box 22 held between the mold 21 of the upper press frame 13 and the mold 17 of the lower table frame 12. When the lower table frame 12 is further lowered slightly, the receiving plate 20 is placed on the delivery rails 9, 9', and at the same time the upper press frame 13 is reversed and raised, and the receiving plate 20 on which the product C is placed is placed on the receiving plate 20.
are pushed out on the delivery rail and proceed to the next curing process.

The above-mentioned embodiment is a case in which the present invention is applied to a so-called holding type vertical motion molding machine in which the lower table frame mechanism shown in the fourth figure is directly moved up and down with respect to the machine base by a hydraulic cylinder 8. The frame mechanism is suspended by springs from the upper frame of the machine.

The present invention can also be applied to a so-called suspended vertical motion molding machine in which an upper press frame is hydraulically operated.

As explained above, according to the present invention, during the compression molding process, a desired protrusion mold is used, and the push-up compression by a separate lower pressure plate is performed in cooperation with the upper mold compression.
Compared to conventional compression molding on a receiving plate, the density of the product is increased and the product is made more uniform, and the outer wall surface of the product is subjected to rubbing action on the inner wall surface of the mold surface, resulting in an extremely desirable smooth finished surface, making it suitable for use. The effect of maintaining the cleanliness of the product receiving plate and preventing damage can also be obtained, and the industrial effect is enormous.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the lower table frame mechanism, Fig. 2 is a plan view thereof, and Fig. 3 is a perspective view of the lower table frame mechanism.
The figure is a vertical sectional side view taken along the line A-X in FIG. 2, and FIG. 4 is a side view of the holding type vertically moving concrete block forming machine. 1.1'... Side plate, 2.2'... Elastic body, 3... Core projection type, 4... Base plate, 5... ...Hydraulic cylinder 6゜6'...
Hydraulic cylinder, 7, 7'... Link, 8...-
... Hydraulic cylinder, 9.9' ... Delivery rail, 10 ... Lower mold plate, 11 ... Guide rod, 12 ... Table frame , 13...
... Press frame, 14 ... Pedestal, 15
, 15'... Receiving plate insertion mechanism, 16...
Through hole, 17... Pressing die, 18... Pressing plate, 20... Receiving plate, 21... Upper pressing die,
22...Mold surface, 23...Material supply box, 24
...Eccentric rotation shaft, 25 ...Motor 2
6...Roller, 27...Brace plate mounting insertion rod, C...Product, F...Machine frame, B
...Guidance rod.

Claims (1)

[Claims] 1. A concrete block molding machine that vertically compresses and molds a concrete material filled in a mold surface, has a protruding mold inserted into the mold surface t:'UC on the lower table frame. A lower mold plate is provided so as to be movable up and down, and a pressurizing plate is provided on the upper surface of the lower mold plate with a through hole into which the protruding mold can be fitted, and a pressure plate is provided so as to be movable up and down with respect to the lower mold plate. A concrete block forming machine characterized by having a table frame mechanism. 2. In a concrete block molding machine that vertically compresses concrete material filled in the mold surface, a lower mold plate having a protruding mold is installed on the lower table frame so as to be movable up and down, and A concrete block molding machine is equipped with a lower table frame mechanism in which a pressure plate is provided with a through-hole on the upper surface of the template so that the protrusion mold can fit therein, and can be moved up and down relative to the lower template. When compression molding is completed, the upper end of the protruding mold and the upper surface of the pressure plate are lowered so as to slightly escape from the lower surface of the mold surface to create a gap on the lower surface of the mold surface, and then the receiving plate is moved from the machine side into the gap. A concrete block forming machine characterized by being provided with a receiving plate insertion mechanism that operates to insert the concrete block into the concrete block.