JPH06270119A - Device for removing foam in raw concrete in mold frame - Google Patents

Abstract

PURPOSE:To obtain a foam removing device for moving foam in raw concrete upward so as to discharge to the outside by placing a mold frame filled with the raw concrete in a nearly square machine frame having openings on right and left sides, covering its top face, and rotating it in reciprocating way together with the machine frame by exerting vibration to the mold frame. CONSTITUTION:In a machine frame 19, a vibrating device 4, a transferring device 3 and a vertical motion device of an electric cover arranged at an upper part are provided. A mold frame 5 filled with raw concrete is fixed on the vibrating device 4 by the transferring device 3 and covered. Straddling two sides at right and left side edges of the machine frame 19, circular arc rotating bodies 9 having stoppers 11 at their tips are fixed. Circular rings 12 which slidably contact with the rotating bodies 9 at their front and back in lower part are axially supported by bearings 13. Among the rotating bodies 9, a plurality of arc-shaped driving wheels 14 are fixed on the rear face of the machine frame 19. On right and left sides of a rotating shaft 15, starting gears 17 connected to a motor by chains and driving gears 18 to be engaged with the arc-shaped driving wheels 14 are provided so as to exert vibration on the mold frame 5 and rotate the rotating bodies 9 in reciprocating way by the sliding contact of the circular rings 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a form transferring device, a vibrating device, a cover device, etc. in a substantially square machine frame, pre-fills with fresh concrete, and vibrates the form sent by the transferring device. After being transferred to the device and covered with the mold, vibration and forward / reverse rotation are applied to move the bubbles of the fresh concrete in the mold to the upper part and release it to the outside. Of the air bubble removing device.

[0002]

2. Description of the Related Art Conventionally, in order to manufacture a molded product using raw concrete as a raw material, a metal mold corresponding to the shape of each molded product is made, and an inner mold is inserted into an outer mold so that the mold can be freely inserted and removed. The width of the space between both frames is adjusted according to the type of product. Then, fresh concrete is poured from above, a lid is provided on the top, and it is stood vertically and dried, and after a lapse of a predetermined number of days, the inner and outer molds are disassembled and the product is taken out.

[0003]

As described in the prior art, in order to make a molded product using raw concrete as a raw material, it can be manufactured very easily using a mold, but air bubbles are present in the molded product. Therefore, there is a problem that the molded product is cracked when an external force is applied.

Further, when a molded product is laid, there is a problem that, when the molded product has air bubbles connected, damage is caused from the air bubble portion to which a load is applied from above.

The present invention has been made in view of the above problems of the prior art. The object of the present invention is to transfer by a transfer device capable of continuous processing, and After being filled with ready-mixed concrete in the frame during transfer, when it is stored in the machine frame, the machine frame vibrates while the machine frame is rotated forward and backward by other actuating force to generate bubbles in the frame. An object of the present invention is to obtain a device for removing air bubbles in ready-mixed concrete in a form that is discharged to the outside while being moved to the upper part.

[0006]

In order to achieve the above object, the present invention comprises a vibrating device in a machine frame, a transfer device, and an electric lid up-and-down device in an upper portion, and the transfer device preliminarily prepares for transfer midway. A formwork filled with concrete is fixed on the vibrating device, and an arcuate rotary body having a stopper at the tip is fixed over the two sides of the left and right side edges of the machine frame.

A circular ring is axially supported by bearings in sliding contact with the lower part of the arcuate rotary member.

A plurality of arcuate drive wheels are fixed between the arcuate rotary members on the back surface of the machine frame, and a start gear and a drive gear are fixed to the left and right of the center of the rotating shaft supported by the bearings. Is connected to the gear of the motor by a chain, and the drive gear meshes with the arcuate drive wheel.

Further, the rotary shaft may be divided into two equal parts and linearly rotatably supported by the bearing at the same speed at the same time, and the respective gears and motors may be arranged on the respective shafts.

[0010]

In the machine frame constructed as described above, a formwork preliminarily filled with ready-mixed concrete is fixed on the vibrating device by the transfer device, and the lid is lowered from above to the opening of the formwork by the energizing mechanism. Fix tightly.

When pouring fresh concrete into a mold, the foam water is lighter than gravel and sand concrete and tries to rise up and out, but the mold itself is composed of an outer mold and an inner mold, Since the top surface is blocked by, air bubbles remain in the bottom part.

Therefore, when the vibration device is energized to apply vibration to the form and the prime mover is started, and the drive wheels are rotated by the drive gears via the starting gears of the rotary shaft, the left and right arc-shaped rotary bodies are circular. Since the sliding contact causes forward and reverse rotation, when the machine frame and the form frame both follow and oscillate and incline, the bubbles accumulated in the bottom portion sequentially rise to the upper portion and are discharged to the outside.

The mold in which the air bubbles in the fresh concrete are discharged to the outside is carried out of the machine by the transfer device, and after drying, the frame is removed to obtain a product.

[0014]

EXAMPLES Examples will be described with reference to the drawings. 1 to 3, the whole is made of a metal frame, and a substantially rectangular machine frame 19 having left and right sides opened from the vertical rods 1, 1 and the horizontal rods 2, 2 is formed. A form transfer device 3 associated with an external transfer device and a vibration device 4 are provided at the center of the lower surface of the machine frame 19. On the vibrating device 4, a mold 5 preliminarily poured with ready-mixed concrete is placed on the way of the transfer, and the upper surface of the mold 5 is covered with a lid plate having a cylinder 8 between an upper plate 7 and a lower plate 6. The upper plate 7 is pressure-bonded with the pressing rod 10 suspended by the winch 12 so as to be hermetically closed.

A machine frame 1 continuous with the vertical rods 1 and 1 on the rear side
Arc-shaped rotating bodies 9 and 9 are fixed to the lower lateral rods 2 and 2 on the left and right sides of 9, and stoppers 11 and 11 are attached to the front and rear ends of the left and right arc-shaped rotating bodies 9 and 9, respectively. Circle of 1
The bearings 13 and 13 are rotatably supported by the bearings 13 and 13 so as to be in sliding contact with the bearings 2 and 12.

Further, in order to rotate the arcuate rotary members 9, 9 together with the machine frame 19, a gear is provided on the circumference of the wheel at a predetermined interval from the left and right arcuate rotary members 9, 9. A pair of arcuate drive wheels 14, 14 are fixed to the back surface of the machine casing 19.

Further, in order to reduce the load of power and to perform the forward and reverse rotation smoothly and quickly, the rotary shafts 15 and 15 which are divided into two and are arranged in a horizontal line, and the two prime movers 16 corresponding thereto, 16 are provided, starter gears 17, 17 and drive gears 18, 18 are fixed to each of the rotary shafts 15, 15 and are rotatably supported by a plurality of bearings. Prime mover 16
The gear of (1) and the gear of one of the prime movers 16 suspend the chain on the starting gear 17 and the starting gear 17, respectively. The drive gear 18 is the arc drive wheel 14, and the drive gear 18 is the arc drive wheel 14.
The machine frame 19 and the mold frame 5 are vibrated in the forward and reverse directions together with the arcuate rotary bodies 9 and 9 by meshing with each other.

4 (a) (b) (c) (d) (e)
The figure shows the movement of the arcuate rotary body 9 and the arcuate drive wheels 14 due to the starting force of the motor, and the forward and reverse rotation of the mold 5 inside the machine frame 19.

FIGS. 5 (f), (g), (h), (i), and (j) show the state in which bubbles in the fresh concrete are discharged to the outside. FIG. 5 (f) shows the state immediately after the fresh concrete is filled. In this state, there are innumerable bubbles on the bottom surface. Figure 5 (g)
Causes the concrete to be tilted upward by 45 °, so that the bubbles rise at the same time. In FIG. 5 (h), the bubbles move to the upper end. In FIG. 5 (i), the bubbles that have moved to the upper end move to the opposite side and escape to the outside. FIG. 5 (j) shows a state in which air bubbles have been completely removed from the green concrete.

Therefore, the succeeding formwork is transported to another place after the operation of the ready-mixed concrete in the preceding formwork is completed, and then is fed into the machine form to repeat the same operation to manufacture the same product.

[0021]

Since the present invention is configured as described above, it has the following effects.

In the apparatus of the present invention, the vibrating device, the transfer device and the lid are electrically operated in a substantially rectangular machine frame,
After the work in one formwork is completed, the subsequent formwork is automatically transferred into the machine form, which not only saves labor and time but also improves work efficiency.

Further, the apparatus of the present invention can easily adjust the inclination angle of the mold while starting and rotating the machine frame together with the arcuate rotary body and the arcuate drive wheel by the starting and driving gears by the starting force of the motor. Further, the vibration of the vibrating device causes the bubbles in the raw concrete in the form to rise upward and be discharged to the outside, so that the raw concrete can be freely tightened and the product having high strength at high speed, for example, box culvert, is highly producible.

[Brief description of drawings]

FIG. 1 is a front view of an air bubble removing device in ready-mixed concrete in a mold of the present invention.

FIG. 2 is a perspective view of an air bubble removing device in ready-mixed concrete in a mold of the present invention.

FIG. 3 is a side view of a device for removing bubbles from fresh concrete in a mold of the present invention.

FIG. 4 is a view showing a rotating state of a bubble removing device in ready-mixed concrete in a mold of the present invention.

FIG. 5 is a diagram showing a moving state of bubbles in ready-mixed concrete in a mold.

[Explanation of symbols]

 3 Form Transfer Device 4 Vibration Device 5 Form 9 Arc-Shaped Rotating Body 11 Stopper 12 Circular Ring 13 Bearing 14 Arc-Shaped Drive Wheel 15 Rotating Shaft 16 Motor 17 Start Gear 18 Drive Gear 19 Machine Frame

Claims (1)

[Claims] 1. A form transfer device, a vibrating device at the center of the lower surface, and an electric vertically movable lid at the upper part are provided along a left-right opening direction in a substantially rectangular machine frame having an opening on the left and right sides. A formwork pre-filled with ready-mixed concrete is placed on the vibrating device in the machine frame and covered from the upper surface, and the arcuate rotary body is fixed over the two left and right side edges of the machine frame. A stopper is attached to the tip of the rotary body, and circular wheels are rotatably slidably mounted on the front and rear of the lower surface of the rotary body. Further, a plurality of arc-shaped drive wheels are fixed to the rear surface of the machine frame in the middle of the left and right circular arc-shaped rotary bodies. The drive wheel and the arcuate rotary body are rotatably supported by the corresponding starter gear and the rotary shaft to which the drive gear is fixed. Device for removing air bubbles in ready-mixed concrete in a mold configured to rotate forward and backward together with the machine frame. Place