JPH06134363A - Spraying device and spraying method - Google Patents

Abstract

PURPOSE:To provide the spraying device which can yield a concrete product having rugged beautiful patterns on the surface of the concrete without using patterned rubber molds, resin molds, etc., and without being affected by weather condition, etc., and enables the extremely easy conduction of a spraying operation at a high speed without requiring labor. CONSTITUTION:This spraying body device 11 has a sprayer 14 for spraying mortar, etc., M to the surface of the concrete 4. An inside frame 8, bearings 10 and rail shafts 9 hold the spraying body device 11 in a position apart from the surface of the concrete 4 and is held movable relative to the surface of the concrete 4. While the sprayer 14 sprays the mortar, etc., M to the surface of the concrete 4, a driving means, etc., vertically reciprocating-move the sprayer 4 so as to attach and detach to or from the surface of the concrete 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention relates to a gutter lid, an L-shaped retaining wall,
The present invention relates to a spraying device and a spraying method capable of forming a surface pattern on a concrete product such as a retaining wall block.

[0002]

2. Description of the Related Art Conventionally, as a method of forming a surface pattern on a concrete product, for example, a rubber mold with a pattern, a resin mold or the like is laid on the inner bottom of a mold so that the pattern surface faces upward, and in this state. A method is known in which concrete is poured into a mold and the concrete is cured and then removed from the mold.

However, in this conventional method, it is necessary to prepare an expensive patterned rubber mold, a resin mold, etc. for each pattern for forming a pattern, and the patterned rubber mold, resin, etc. There is a problem that the mold tends to deteriorate particularly when it is subjected to forced curing with steam, and it needs to be frequently replaced with a new one, resulting in an increase in cost of the concrete product.

In order to solve such a problem, for example, Japanese Examined Patent Publication No. 3-27368 discloses a period in which concrete is placed in a mold to prevent elastic deformation before the concrete is hardened. In addition, a method has been proposed in which the surface of concrete is covered with a patterned rubber mold or the like, and the upper surface of the concrete is rolled by rollers to transfer the pattern of the rubber mold or the like onto the surface of the concrete.

[0005]

However, in this method, before the concrete is not hardened, and after waiting for 4 hours to 8 hours until elastic deformation does not occur, the patterning work using the rubber mold or the like is performed. Since it has to be carried out, the efficiency of rotation of the formwork is deteriorated, productivity cannot be improved, and the waiting time changes depending on the season or the weather condition of the day. There is a problem of being troublesome.

The present invention has been made in order to solve the above-mentioned drawbacks of the prior art. The object of the present invention is to immediately perform patterning work without waiting time after placing concrete. It is possible to perform the patterning work extremely easily and at high speed without much labor, regardless of the season or the weather condition of the day, and the expensive patterned rubber. It is an object of the present invention to provide a spraying device and a spraying method capable of performing a patterning work without using a mold, a resin mold or the like.

[0007]

The spraying device according to the present invention has the following constitution in order to achieve the above object.
That is, on the surface of the concrete placed in the formwork,
A spray main body device for spraying mortar or cement paste or compressed air, and a holding and moving means for holding the spray main body device at a position apart from the surface of the concrete and movably holding the surface of the concrete are provided.

Further, while the spraying device of the spraying main body device sprays the mortar or the cement paste or the compressed air onto the surface of the concrete, the spraying device moves toward or away from the surface of the concrete. Reciprocating means for vertically reciprocating the device may be provided in the spraying main body device.

Further, the spraying main body device may be provided with an adjusting means for adjusting a spraying distance between the surface of the concrete and the spraying device.

The spraying device is a control device for performing or stopping the spraying operation when the spraying device of the spraying main body sprays mortar or cement paste or compressed air onto the surface of concrete. May be provided.

Further, the spraying method according to the present invention has the following constitution in order to achieve the above object. That is,
Mortar or cement paste or compressed air is sprayed onto the surface of the concrete cast in the formwork by the spraying main body device. At that time, the spray main body device,
The concrete is held at a position apart from the surface of the concrete, and at least one of the spray main body device and the mold is moved to spray the concrete surface.

[0012]

After the concrete is placed in the form, mortar or cement paste or compressed air is immediately sprayed onto the surface of the concrete by the spraying main body device without waiting time. The holding and moving means holds the spraying main body device at a position separated from the surface of the concrete and movably holds the surface of the concrete. Therefore, even if a large amount of labor is needed to move the weight of the spraying main body device largely, the holding and moving means can hold and move the spraying main body device at that position, so that the spraying operation is extremely easy. In addition, it can be performed at high speed and without much labor, and an aesthetic pattern of unevenness can be formed on the surface of concrete.

While the spraying device of the spraying main body device sprays the mortar or cement paste or compressed air onto the concrete surface, the reciprocating means moves the spraying device toward or away from the concrete surface. Since it reciprocates up and down, the amount of mortar or cement paste sprayed on the surface of the concrete per unit area or the spray pressure of compressed air is immediately changed to form various patterns.

Further, since the adjusting means can adjust the spraying distance between the surface of the concrete and the sprayer, the sprayer is arranged at the most suitable position for patterning according to the surface hardness of the cast concrete. can do.

Further, the control device causes the spraying device to perform or stop the spraying operation so that the surface of the concrete may or may not have mortar or cement paste, or the surface of the concrete may be compressed with compressed air. Various patterns are formed by hitting or not hitting.

Further, in the spraying method, the spraying main body device is held at a position apart from the surface of the concrete, and at least one of the spraying main body device and the mold is moved, whereby the spraying main body device is Spray mortar or cement paste or compressed air against the concrete surface.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a spraying device and a spraying method according to the present invention will be described below with reference to the drawings.

The formwork 1 is, for example, a formwork for producing a concrete product such as a retaining wall block, and is formed by a bottom plate (not shown), a gable plate 2 and a side frame 3 which can be opened and closed and rotated. Concrete 4 is placed in the form 1. Then, in this state, apply a vibrator to the concrete 4,
The concrete 4 is compacted. As the concrete 4, in addition to ordinary concrete prepared by mixing cement with water, sand and gravel, mortar prepared by mixing cement with water and sand, or lightweight cellular concrete may be poured (hereinafter, concrete). The term refers to a wide range of concepts including mortar and lightweight cellular concrete).

Thereafter, without waiting time, a mortar or cement paste in which water is mixed with cement is mixed on the surface of the concrete 4 (hereinafter, collectively referred to as mortar M, etc.) by using a spraying device described later. .) With compressed air. By changing the spraying pressure or the spraying amount of the mortar M per unit area of the surface, or by spraying the mortar M,
By not spraying it, the surface of the concrete will be hit or not hit with compressed air, giving an aesthetic pattern of unevenness such as a wind ripple on the surface of the concrete 4, and the mortar or cement paste The coating film 4a is formed, and the added value of the concrete product is increased.

In this case, it is desirable to select either one of the mortar and cement paste and set the mixing ratio of the materials appropriately. Also,
If necessary, a colorant such as a pigment may be mixed with the mortar or cement paste to be used, whereby the coating film 4a having a desired color can be formed.

However, in order to form the uneven pattern on the surface of the concrete 4, it is necessary that the concrete 4 has an appropriate softness. Therefore, it is advisable to set the slump value of the concrete 4 to be cast to about 6 to 20 cm, preferably about 12 cm. Further, it is preferable that a mortar layer having a thickness of about 15 mm is laminated on the surface portion of the concrete 4. this is,
This is because, when a concave-convex pattern is formed on the surface of the concrete 4 by spraying mortar or the like or by blowing compressed air, the spray prevents the aggregate in the concrete 4 from being exposed on the surface. .

Next, the spraying device will be described. The spraying device 5 is, as shown in FIGS. 1 to 3, an outer frame 6 formed in a substantially rectangular parallelepiped shape by assembling steel columns and the like.
Is equipped with. On the upper part of the outer frame 6, two insertion frames 7 into which the two forks F of the hawk lift truck can be inserted are bridged. Therefore, along the arrow X direction in the figure,
By inserting the two forks F of the hawk lift truck into the insertion frame 7 and lifting the spraying device 5,
Can be placed on or removed from the formwork 1.

As shown in FIG. 3, a rectangular inner frame 8 assembled from a steel frame is disposed above the outer frame 6 in the frame. It is attached so as to be movable in the arrow Y direction orthogonal to the arrow X direction in the frame above. That is, between the inside of the frame above the outer frame 6 and the outside of the inner frame 8, two rail shafts 9 parallel to the direction of the arrow Y are provided.
Bearings 10 slidable along the rail shafts 9 are attached to the inner frame 8.

Inside the inner frame 8, two rails parallel to the arrow X direction are provided so that the spraying main body device 11 for spraying the mortar M on the surface of the concrete 4 can be moved in the arrow X direction. Shafts 12 are respectively arranged, and bearings 13 slidable along the rail shafts 12 are attached to the spraying main body device 11, respectively. As shown in FIG. 2, the spraying main body device 11 includes a plurality of spraying main body devices 11 (5 in the drawing).
The spray gun 14 is composed of individual spray guns. The distance between the spray guns 14 arranged along the arrow Y direction is the same as the spray gun 1 moving along the arrow Y direction.
4 and the inner frame 8 and the like are set to be smaller than the movable distance, so that the spraying main body device 11 and the inner frame 8 and the like move in the arrow Y direction along the rail shaft 9 so that the arrow of the concrete 4 is moved. Mortar, etc. M on all surfaces along the Y direction
Can be sprayed. Therefore, although the inner frame 8, the rail shafts 9 and 12, and the bearings 10 and 13 function as a holding and moving unit that holds and moves the spraying main body device 11,
This holding and moving means holds the spraying main body device 11 at a position apart from the surface of the concrete 4, and
As long as it is configured so as to be movably held with respect to the surface of the concrete 4, the spraying main body device 11 may also have another configuration.

As shown in FIGS. 1 and 2, each spray unit 14 is fixed to a supporting member 15 made of a metal plate, which is arranged along the arrow Y direction, through a metal fitting 16 for fixing. The supporting member 15 is attached to a first side plate member 17 formed of a pair of metal plates arranged on the side of the spraying main body apparatus 11. Inside the first side plate member 17,
The 2nd side plate member 18 which consists of a metal plate is each arrange | positioned, and these 2nd side plate members 18 are being fixed to the frame member 11a of the spraying main body apparatus 11. As shown in FIG. Then, metal pins 17a projecting toward the second side plate member 18 are provided on both sides of the upper portion of the first side plate member 17, and the second side plate member 18 has a vertical direction (arrow in the figure). A pair of long holes 18a are provided so as to extend in the Z direction).
The metal pin 17a is passed through 8a. Therefore, each of the first side plate members 17 is, via the metal pin 17a,
It is fixed to each second side plate member 18 so as to be slidable in the arrow Z direction. In addition, inside each of the first side plate members 17,
A fixing shaft member 17b extending parallel to the longitudinal direction (direction of arrow Y) of the support member 15 is attached, and the first side plate members 17 can move integrally with each other.

Further, as shown in FIG. 4, the outside of each first side plate member 17 is provided with a projecting plate 17d projecting outward at the center of the upper part thereof, and each second side plate member 1 is provided.
8 also has a projecting plate 18b projecting outward and facing the projecting plate 17d at the center thereof. Perforations (not shown) are provided in the central portions of the projecting plates 17d and 18b, and screw shafts 18c extending in the arrow Z direction penetrate between the perforations. And the screw shaft 18c
A pair of nuts 17e and a pair of nuts 18d are fastened to the upper and lower portions of the respective projecting plates 17d and 18b. Therefore, if the nuts on the upper side of the pair of nuts 17e are loosened, the first side plate members 17 can be slid upward with respect to the second side plate members 18, and conversely,
By loosening the nuts on the lower side of the pair of nuts 17e, the first side plate members 17 can be slid downward with respect to the second side plate members 18. As a result, the worker
Adjusting the spraying distance between the spray gun 14 and the surface of the concrete 4 by moving the first side plate 17 to which the support material 15 is connected toward or away from the surface of the concrete 4. Therefore, the spray gun 14 can be arranged at the most suitable position for patterning according to the surface hardness of the cast concrete 4.
The availability of this device is increased.

On the other hand, in each of the first side plate members 17, as shown in FIG. 4, a pair of elongated holes 17c extending in the arrow Z direction.
Are provided respectively, and both ends 15a in the longitudinal direction of the support member 15 respectively penetrate through the long holes 17c. Since the length of each long hole 17c in the arrow Z direction is longer than the length of each end 15a in the arrow Z direction, each end 15a is movable in each long hole 17c in the arrow Z direction. . A drive device 19 such as an air cylinder for moving the support member 15 in the arrow Z direction is provided outside each first side plate member 17, and each drive device 19 moves in the arrow Z direction. The drive unit 19a that expands and contracts is provided, and these drive units 19a are
It is connected to the end portion 15a of the support member 15 penetrating each elongated hole 17c via the fixing metal fitting 20.

Since each drive device 19 is driven by air pressure as power, two pipes 19b are attached to each drive device 19 for transmitting power, and power supply (not shown) is provided via these pipes 19b. Coupled to the device. Further, on the side of one drive device 19, the device 1
An activation unit 21 for controlling the drive start and stop of the drive device 9 is provided, and a control line 21a for simultaneously driving both drive devices 19 is attached to the activation unit 21 and is connected to both drive devices 19. . Therefore, these support materials 15,
The drive device 19, the metal fitting 20 and the like perform the function of a reciprocating means for reciprocating the sprayer 14 of the spraying main body device 11 up and down, and this reciprocating means moves toward and away from the surface of the concrete 4. As long as the spraying device 14 is configured to reciprocate up and down, another structure may be used.
Furthermore, the above-mentioned first side plate member 17, metal pin 17a,
The second side plate member 18, the perforation 18a, the screw shaft 18c, and the projecting plates 17d and 18b serve as an adjusting means for adjusting the spraying distance between the surface of the concrete 4 and the spraying device 14, and this adjusting means, It may have another configuration as long as it is configured to be movable and adjustable toward and away from the surface of the concrete 4.

As shown in FIG. 1, the spray unit 14 has spray ports 14a for spraying mortar M or the like on the surface of the concrete 4, and each spray port 14a stores a storage unit 14b for storing the mortar M or the like. , And a hose 14c for supplying blowing air. The hose 14c is connected to an air supply device (not shown) via a pipe 22 which supplies air for blowing. Further, each accumulating portion 14b is provided with a gutter portion 2 for supplying the mortar M and the like through the tubular bag 23.
Connected to four. Before the operator activates the activation part 21, it is necessary to activate the air supply device and supply the mortar or cement paste to the gutter part 24 in advance.

In FIG. 4, reference numeral 25 denotes an operation handle, and the operator moves the spraying main body device 11 in the arrow X direction and the arrow Y direction by using the operation handle 25, so that the surface of the concrete 4 is Spray M with mortar. Instead of the operation handle 25, a moving device that automatically moves in the X and Y directions may be provided in the spraying main body device 11.

Next, the process of forming the uneven coating film 4a on the surface of the concrete 4 using the spraying device 5 will be described.

First, the operator places the spraying device 5 on the formwork 1 on which the concrete 4 has been cast, using a hawk lift truck. Then, the air supply device is activated, and at the same time, the activation unit 21 is operated to start driving the drive device 19. When the supply of air is started, the spraying device 14 starts a spraying operation, and each spraying port 14a sprays mortar M or the like on the surface of the concrete 4 and drives the driving device 1
9 moves the spray port 14a of the spray device 14 closer to the surface of the concrete 4 or reciprocates vertically so as to separate from the surface of the concrete 4 via the drive part 19a, the metal fitting 20, and the support material 15. Therefore, the concrete 4
By immediately changing the spraying pressure or the spraying amount of M such as mortar per unit area on the surface of
Mortar or cement paste coating 4a with an aesthetic pattern of irregularities on the surface of concrete 4
Is formed. At this time, various patterns according to the customer's preference are formed on the surface of the concrete 4 by appropriately changing the speed of approaching or leaving the surface of the concrete 4 to increase or decrease. You can

Then, while observing the pattern formed on the surface of the concrete 4, the worker pushes the operating handle 25 to move the spraying main body device in the directions of the arrow X and the arrow Y, so that the entire surface of the concrete 4 is It is possible to spray M such as mortar. Finally, the spraying device 5 is removed from the formwork 1 by the hawk lift truck, and the spraying work of the mortar M or the like is completed. Then, after forming the uneven pattern and the coating film 4a, the concrete 4 is forcibly or naturally cured by steam or the like. Further, after the concrete product is hardened to a predetermined hardness by this curing, the end plate 2 and the side frame 3 of the mold 1 are opened and rotated outward, and the concrete product is released from the mold 1.

In the above embodiments, an example was shown in which mortar or cement paste was sprayed on the surface of the concrete 4 that was cast, but without using mortar or cement paste, uneven ridges can be formed by using mottled compressed air. You may make it form an aesthetic pattern. That is, using a spray gun or other spraying device, or other methods,
By means of the means, it is possible to apply only compressed air to the surface of the concrete 4 to form an uneven pattern by the pressure, and thereafter cure and demold after curing. However,
In this embodiment, as compared with the above-mentioned embodiment in which a mortar or cement paste is sprayed to form an uneven pattern, the concrete 4 to be cast is preferably one having a large slump value, that is, a soft one, for example, a slump value. It is preferable to select the one having a size of about 15 cm, but the invention is not limited to this.

Further, in the above-mentioned embodiment, the mold 1 on which the concrete 4 is cast is fixed and the spraying main body device 11 is moved. However, the present invention is not limited to this, and the mold 1 on which the concrete 4 is cast. May be moved to fix the spraying main body apparatus 11, or both the mold 1 and the spraying main body apparatus 11 may be movable.

A pattern may be formed on the surface of the concrete 4 by controlling the spraying operation of the mortar M or the like sprayed from the spray port 14a of the sprayer 14. That is, for example, a valve may be attached to the air supply device, a control device may be attached to the valve, and the control device may intermittently open or stop the valve. Then, by intermittently opening and closing this valve, the air sent through the pipe 22, the hose 14c, and the spray port 14a intermittently hits or does not hit the surface of the concrete 4 together with the mortar M and the like. Or As a result, the mortar M or the like adheres to or does not adhere to the surface of the concrete 4, and a pattern is formed on the surface of the concrete 4. Further, also in this embodiment, it is possible to form an uneven pattern on the surface of the concrete 4 by spraying only compressed air or not spraying it without using mortar or cement paste.

[0037]

As described above, according to the invention described in claim 1, without waiting time after placing concrete,
The patterning work can be performed immediately, the mold rotation efficiency is good, and the productivity can be improved.
Further, the holding and moving means holds the spraying main body device at a position distant from the concrete surface and movably holds it against the concrete surface without depending on the season or the weather condition of the day. The patterning work can be performed very easily and at high speed without much labor, and the patterning work can be performed without using an expensive patterned rubber mold, resin mold, or the like. Product cost can be reduced.

According to the invention described in claim 2, while the spraying device of the spraying main body device sprays the mortar or the cement paste or the compressed air onto the surface of the concrete, the reciprocating means moves the surface of the concrete. Since the sprayer is reciprocated up and down to move toward and away from the surface, the amount of mortar or cement paste sprayed on the concrete surface per unit area or the spraying pressure of compressed air changes instantly and various patterns Is formed, and a pattern can be formed according to the customer's preference.

According to the invention described in claim 3, since the adjusting means can adjust the spraying distance between the surface of the concrete and the sprayer, the adjusting means can adjust the spraying distance according to the surface hardness of the cast concrete. The spray gun can be placed at the most suitable position for patterning, and the usability of the device is enhanced.

According to the invention described in claim 4, the control device causes the spraying device to perform or stop the spraying operation, so that mortar or cement paste is attached or not attached to the surface of the concrete. Or, various patterns are formed by compressed air hitting or not hitting the concrete surface,
A pattern can be formed according to customer preference.

According to the invention described in claim 5, the patterning work can be carried out immediately without placing a waiting time after the concrete is poured, and the rotating efficiency of the formwork is good and the productivity is improved. It can be improved, and the patterning work can be performed very easily and at high speed without being influenced by the season or the weather condition of the day, and moreover, the expensive patterned rubber mold, resin mold, etc. It is possible to perform the patterning work without using, and to reduce the product cost.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a state in which a spraying device according to the present invention is placed on a mold.

FIG. 2 is a front view of a spraying device according to the present invention.

FIG. 3 is a similar plan view.

FIG. 4 is a side view showing a part of the apparatus in an enlarged manner.

[Explanation of symbols]

1 Formwork 4 Concrete 8 Inner Frame (Holding and Moving Means) 9 Rail Shaft (Holding and Moving Means) 10 Bearing (Holding and Moving Means) 11 Spraying Main Unit 12 Rail Shaft (Holding and Moving Means) 13 Bearing (Holding and Moving Means) 14 Sprayer 15 Supporting Material (Reciprocating Means) 17 First Side Plate Member (Adjustment Means) 17a Metal Pin (Adjustment Means) 17d Projection Plate (Adjustment Means) 18 Second Side Plate Member (Adjustment Means) 18a Drilling (Adjustment Means) 18c Screws Shaft (adjusting means) 18b Projecting plate (adjusting means) 19 Drive device (reciprocating means) 20 Metal fitting (reciprocating means) M Mortar or cement paste

Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area C04B 41/65

Claims (5)

[Claims] 1. A spraying main body device (1) for spraying mortar or cement paste (M) or compressed air onto the surface of concrete (4) cast in a mold (1).
1) and the spray main body device (11) to the concrete (4)
And a holding and moving means (8, 9, 10, 12, 13) for holding the surface of the concrete (4) so as to be movable while holding the position apart from the surface of the concrete (4). 2. A spraying device (1) of the spraying main body device (11).
The spraying device 4) moves toward or away from the surface of the concrete (4) while spraying mortar or cement paste (M) or compressed air onto the surface of the concrete (4). The spraying device according to claim 1, wherein a reciprocating means (15, 19, 20) for vertically reciprocating the (14) is provided in the spraying main body device (11). 3. An adjusting means (17) for adjusting a spraying distance between the concrete (4) and the spraying device (14).
The spraying device according to claim 2, wherein the spraying main body device (11) is provided with 18, 17a, 18a, 18c, 17d, 18b). 4. A spraying device (1) of the spraying main body device (11).
Spraying according to claim 1, wherein 4) is provided with a control device for performing or stopping the spraying operation when spraying the mortar or cement paste (M) or compressed air onto the surface of the concrete (4). apparatus. 5. A spraying method for spraying mortar or cement paste (M) or compressed air onto a surface of concrete (4) cast in a mold (1) by a spraying main body device (11), The spraying main body device (11) is replaced with the concrete (4).
A spraying method in which at least one of the spraying main body device (11) and the mold (1) is moved and held at a position away from the surface of the concrete, and spraying is performed on the surface of the concrete (4).