JPH0144127B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention forms various uneven patterns on the surfaces of mortar products, concrete products, and cast-in-place concrete structures (hereinafter collectively referred to as concrete products). Regarding the method.

(Prior art) A method for forming such an uneven pattern was disclosed in Japanese Patent Application Laid-Open No.
It is known from the publication No. 171605. This is done by creating recesses that match the pattern to be expressed on the surface of a rubber mat, filling these recesses with mortar, and manufacturing concrete products on the surface of the rubber mat that has these recesses. Mortar is applied to the surface of the product to create an uneven pattern on the surface of the product.

(Problems to be Solved by the Invention) According to the above conventional method, a rubber mat with recesses on its surface can only express one type of pattern, and it is difficult to express various patterns on concrete products with the same surface. This requires a large number of mats, each with a different recess.

(Means for Solving the Problems) Therefore, the present invention covers at least one surface of a formwork into which concrete is poured with an elastic flexible plate, and also includes a flexible plate on the back plate of the flexible plate. A number of pins with different positions of tips facing the pattern gauge plate or flexible plate having unevenness on the surface facing the plate are arranged, and the flexible plate is pushed by the pattern gauge plate or the group of pins to elastically deform it. This method is characterized by producing an uneven pattern on the surface of a product manufactured from concrete placed in a formwork in contact with the flexible plate.

(Function) Before pouring concrete into the formwork, or after pouring and before it hardens, press the uneven surface of the pattern gauge plate or a number of pins with different tip positions against the flexible plate. The flexible plate is elastically deformed according to the uneven surface of the pattern gauge plate or the difference in the tip position of the pin. As a result, a concavo-convex pattern is formed on the surface of the product manufactured from the concrete cast in the formwork that comes into contact with the flexible plate, and after the product has solidified, it is removed from the formwork.

(Example) In the drawings, the aforementioned formwork is numbered 1, the flexible plate is numbered 2, the pattern gauge plate is numbered 3, and the number of pins is numbered 4. Note that the flexible plate 2 is made of rubber.

In each of the embodiments shown in FIGS. 1-3, 4, 5, and 6, the flexible plate 2 is stretched over the bottom of the formwork. Therefore, the planar shape of the flexible plate is slightly larger than the outer circumference of the formwork, and the peripheral edge portion protrudes outward from the entire circumference of the lower surface of the formwork. The formwork 1 has two upper and lower guide plates 5a and 5b having holes distributed almost evenly through which the pins 4 can be movably passed in the vertical direction, stacked on a pin support frame 5 fixed to the inner periphery. The peripheral edge of the flexible plate 2 is sandwiched between the bottom surface of the formwork and the collar extending outward from the top surface of the pin support frame, and fixed in this state with bolts, and the pin support frame 5 is placed under the formwork. Concatenate. To form a concrete plate, a pin support frame 5 connected to the bottom of the formwork 1 is placed on a vibrator 7 installed via the vibration isolating rubber of a vibration platform frame 6. Inside this vibrating frame 6 is a table 9 that is raised and lowered by a piston cylinder 8 that is installed upward.

In the embodiment of FIGS. 1 to 3, each pin 4 has a bulged head at its upper end that is larger than the hole in the upper guide plate 5a in the pin support frame 5, and the head is attached to the hole in the upper guide plate 5a. The pin is received by the edge and hangs down, the lower half of the pin protrudes downward from the lower guide plate 5b, and the head of the pin approaches the lower surface of the flexible plate 2 (see FIG. 2).

A plate 11 is removably fixed on the table 9 on which pressing pieces 10 of various heights are erected, facing each pin 4 from below. Incidentally, it is preferable that each pressing piece 10 is erected so as to be detachable from the plate 11 with a bolt or the like.

Therefore, before pouring ready-mixed concrete from the open top surface of the formwork into the inside of the formwork using a well-known concrete pouring machine that runs over the formwork 1, or after pouring and before the ready-mixed concrete has yet solidified. When the table 9 is raised by the piston cylinder 8, each pressing piece 10 of the plate 11 fixed on the table pushes up the opposing pin according to its height, and thereby the flexible plate is pushed from below at various heights. It is elastically deformed by the raised pin,
A concave-convex pattern is formed on the surface of the concrete product that is cast inside the formwork and hardened, in contact with the flexible plate.
During pouring, the vibrator 7 is driven to fully fill the mold 1 with ready-mixed concrete, and after pouring, the concrete is lowered from the vibrating frame after it has solidified, and the product is placed in the mold. Remove from the frame. In this case, when the formwork is lowered from the vibrating frame, each pin will fall under its own weight, and the flexible plate 2 will peel off from the bottom surface of the product.

The upper surface of the formwork 1 in the embodiment shown in FIG. 4 is covered with a removably attached upper surface plate 12. An injection port 14 having an on-off valve 13 is provided on the side surface of the form, and a discharge port 15 of a fresh concrete press-in machine is removably connected to the injection port. In addition, the table 9 in the vibration frame 6
A pattern gauge plate 3 is replaceably mounted on the top with the uneven surface facing upward.

Therefore, the formwork 1 is placed on the vibrator 7 of the vibrating table frame using the pin support frame 5, and the ready-mixed concrete is pressed into the formwork through the valve 13 and the injection port 14 by the ready-mixed concrete press-in machine, or before or during press-fitting. When the table 9 is raised by the piston cylinder 8, the pattern gauge plate 3 fixed on the table
The flexible plate 2 is elastically deformed by pushing up the pins 4 according to the height of the unevenness on the upper surface, and is press-fitted into the formwork through the injection port 14, filled and hardened to form a flexible plate of the concrete product. A desired uneven pattern is formed on the surface in contact with the surface.

In this embodiment as well, it is preferable to vibrate the formwork with a vibrator while the concrete is being pressed into the formwork.
When the pouring of ready-mixed concrete is finished, the valve 13 of the injection port 14 is closed, and the discharge port of the ready-mixed concrete injection machine is connected to the injection port 14.
Wait for solidification, and once solidified, lower the formwork from the vibrating frame, remove top plate 12, and demold the product. In addition, an exhaust hole is provided in the top plate 12 to remove air from within the formwork, and if fresh concrete leaks from this exhaust hole during press-fitting of ready-mixed concrete, it is possible to know that the inside of the formwork is filled with ready-mixed concrete. It is better to do it like this. still,
In this embodiment, the pin 4 has a flange 4b in the middle, and a coil spring 16 is fitted onto the flange 4b.
The upper end of the coil spring 16 is received by the lower surface of the upper guide plate 5a, and presses the collar 4b against the upper surface of the lower guide plate 5b, thereby pushing the pin downward. Therefore,
When the pattern gauge plate 3 is raised on the table 9, each pin 4 is pushed up against the elasticity of the coil spring 16, and when the form is lowered from the vibrating frame after solidification, the pin 4 is pushed up by the restoring force of the coil spring. The flexible plate 2 is reliably peeled off from the bottom surface of the product.

In the embodiment shown in FIG. 4, the upper surface of the formwork 1 is connected to the upper surface plate 12.
However, in the embodiment shown in Fig. 5, the top surface of the formwork other than the bottom surface is also covered with a flexible plate 2', and a pin support frame 5' similar to the pin support frame 5 connected below is connected on top of the flexible plate 2'. A flexible plate 2' is stretched. Further, a piston cylinder 8' is attached downward to a portal frame (not shown) that straddles the vibration table frame 6, and a table 9' is provided at the lower end of the piston cylinder 8'.

In this embodiment, the aforementioned pressing pieces 1 of various heights are mounted on the lower table 9 within the vibration table frame.
A plate 11 with 0 upright is attached, and a pattern gauge plate 3 is attached to the lower surface of the upper table 9' with the uneven surface facing downward. Of course, the pattern gauge plate may be attached to the lower table, and the plate 11 with a pressing piece may be attached to the upper table.

To mold the product, connect the discharge port 15 of the ready-mix concrete press-fitting machine to the injection port 14, and extend both piston cylinders 8, 8' before or during press-fitting the ready-mixed concrete into the mold to create a pattern. Gauge plate 3, pressing piece 10
... to elastically deform each flexible plate 2, 2' to form an uneven pattern on both the upper and lower surfaces of the product. Then, the product is removed from the mold by removing one of the pin support frames from the mold.
In the case of the example shown in Fig. 4, high-grade concrete mixed with pigments and other decorative materials is injected into the formwork to a certain thickness using a ready-mixed concrete press-in machine to decorate the lower layer of the product where the uneven pattern is created, and then the usual mixing is carried out. may be poured and filled with concrete. In the embodiment shown in FIG. 5, it is possible to decorate either the upper layer or the lower layer of the product with an uneven pattern by placing either high-grade concrete or ordinary concrete first and the other later. Furthermore, by raising the position of the injection port, high-grade concrete is poured first, then regular concrete, and finally high-grade concrete, and the middle layer is poured with regular concrete and then regular concrete.
The upper and lower layers having a textured pattern can have the same or different decorations.

In the case of the embodiment shown in FIG.
It is preferable to bias it upward at 6'.

In the embodiment shown in FIG. 6, a piston cylinder 17 is arranged under each pin 4 inside the vibrating frame 6, and fluid pressure is supplied to each piston cylinder 17 in a controlled manner. A control valve 18 that can arbitrarily adjust the amount of piston protrusion from the cylinder is connected to the piping of each piston cylinder,
Each control valve 18 controls the amount of protrusion of the piston of each piston cylinder 17, and each piston pushes up the pin 4 by a required amount to deform the flexible plate 2. In this embodiment, there is no need to create a pattern gauge plate 3 or a plate 11 with a pressing piece 10 erected for each uneven pattern as in the previous embodiment, and to form a different uneven pattern, it is necessary to The amount of protrusion of the piston of each piston cylinder 17 may be controlled by the control valve 18 to change the unevenness. Therefore, numbers are assigned to each pin and the piston cylinder or control valve that operates it, and in the case of a certain uneven pattern, how many pins from No. 1 to No. In the case of a certain uneven pattern, for example, the computer memorizes how far each pin from No. 1 to No. n should be pushed up, and the uneven pattern to be formed Accordingly, a command is issued from the computer to the control valve 18 for each pin, and each pin is pushed up by a piston cylinder for the required amount, so that the flexible bottom plate can be deformed according to the selected uneven pattern.

In each embodiment, the lower end of the pin support frame 5 is set lower than the lower end of the pin when the pin is not pushed up, to prevent the pin from bending or breaking when lowered from the vibration platform frame. It is a good idea to prevent this from happening.

The embodiment shown in FIG. 7 is a forming device for forming an L-shaped plate-shaped concrete product into an inverted shape as shown in FIG.
and a pin support frame 20 erected on a truck.

The pin support frame 20 can be thought of as the pin support frame 5 of each of the above-mentioned embodiments erected vertically, and is made up of two sheets having holes for allowing the pins 4 to move in the horizontal direction, which are distributed approximately evenly. The pin support frame 2 is a flexible plate that has guides 20a and 20b on its inner periphery and closes the open side surface of the formwork.
It is stretched over the end face of 0.

To mold the product, the pin support frame 20 is moved forward on a trolley, the open side of the formwork is closed with a flexible plate 2 stretched over the end face, and a patterned cage plate 3 is attached vertically to the tip of the horizontal piston 21. Pin support frame 2 on the uneven surface of
0 pin 4 is pushed from behind, the flexible plate 2 is elastically deformed at the tip of the pin, and concrete is poured into the formwork from the top surface. Then, when the concrete hardens, the piston cylinder 21 is retracted, the pin support frame is retreated, and the product is removed from the form. As a result, an uneven pattern resembling a pattern gauge plate is formed on the surface of the product that comes into contact with the flexible plate 2 that was blocking the open side surface of the formwork. In addition to complex uneven patterns, the present invention can also be applied to simple patterns in which letters, numbers, symbols, etc. are recessed at a certain depth from the surface of a product, or protruding from the surface of a product with a certain thickness. can.

Figures 9 and 10 show such a case. The molding device in Figure 9 is almost the same as the molding device in Figure 6, and instead of a control valve in the circuit of each cylinder 17 to control the amount of piston protrusion. The difference is that a solenoid valve 22 is connected.

As shown in FIG. 10, a photoelectric device 23 consisting of a light emitting element 23a and a light receiving element 23b corresponding to one piston cylinder 17 is arranged vertically and horizontally in the same manner as the piston cylinder, and a pattern to be expressed is printed, for example. The cutout pattern plate 24 is inserted between the light emitting element and the light receiving element, and the light receiving element that receives the light from the light emitting element through the punched pattern opens the solenoid valve 22 of the piston cylinder to which it belongs, thereby causing the piston cylinder to open. The piston is protruded by a certain amount and the pin is pushed to elastically deform the flexible plate 2. Therefore, pattern board 2
By changing 4, different patterns can be formed on the product.

Since the photoelectric device of this embodiment can be extremely small, even if it is integrated in correspondence with the piston cylinder, it can be small-sized, and the pattern plate 24 can also be manufactured easily.

Several embodiments of the present invention have been described above, but when the flexible plate is deformed using a piston cylinder,
The flexible plate may be directly deformed by using the piston itself of the piston cylinder as a pin. Furthermore, recesses 2a are appropriately formed on the surface of the flexible plate that comes into contact with the concrete product, and the uneven pattern formed by elastic deformation of the flexible plate is combined with the pattern formed by the recesses, making it even more variable. You can make it rich.

(Effects of the Invention) As is clear from the above, according to the present invention, an elastic flexible plate that closes at least one surface of the formwork is elastically deformed,
Since an uneven pattern is formed on the surface of the concrete product in contact with this flexible plate, various different uneven patterns can be arbitrarily formed using the same flexible plate.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the concrete placement state showing the first embodiment of the present invention, Fig. 2 is a cross-sectional view of the above flexible bottom plate in a state where it is not elastically deformed, and Fig. 3 is the same flexible plate as above. FIG. 4 is a cross-sectional view of the molded state of the second embodiment, FIG. 5 is a cross-sectional view of the third embodiment of the molded state, and FIG. 6 is a cross-sectional view of the molded state of the third embodiment. FIG. 7 is a sectional view of the molded state of the fifth embodiment, FIG. 8 is a perspective view of the product molded in the same manner as above, and FIG. 9 is a sectional view of still another embodiment of the present invention. A cross-sectional view of the molded state, and FIG. 10 is a schematic diagram of a photoelectric device for deforming the same flexible plate as described above. In the figure, 1 is a mold, 2 is a flexible plate, 3 is a pattern gauge plate, and 4 is a pin. shows.

Claims (1)

[Claims] 1. Block at least one surface of the formwork into which concrete is to be poured with an elastic flexible plate,
Behind this flexible plate, a pattern gauge plate with unevenness on the surface facing the flexible plate or a large number of pins with different positions of the tips facing the flexible plate are arranged, and the pattern gauge plate or pin group is arranged to allow the above-mentioned A method for forming a surface pattern on a concrete product, characterized in that a flexible plate is pressed to elastically deform, thereby producing an uneven pattern on the surface of a product manufactured from concrete placed in a formwork and in contact with the flexible plate.