JP2677195B2 - How to recycle formwork panels for concrete - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recycling a concrete form panel used for forming a form used for placing concrete.

[0002]

2. Description of the Related Art Generally, in a skeleton work carried out when constructing a building made of reinforced concrete, a wooden form panel as shown in FIG. 1 is used as a member of a form for forming a skeleton. The formwork panel consists of a panel plate 1 forming the inner wall of the formwork, and several bars 2 for reinforcement of the formwork panel.
The panel plate 1 is usually fixed to the frame body 2 by nails 3. Then, in the construction of the frame, the frame panel is assembled so that the surface A of the panel board 1 is on the inside, and the frame is formed so that the internal shape of the frame becomes the shape of the frame to be constructed. Concrete is placed in the mold, and the mold is disassembled when the concrete is cured for a certain period of time and the concrete is hardened to form the skeleton. A release agent is applied to the surface A of the panel plate 1 in advance so that the form panel can be easily removed from the hardened concrete during the work of disassembling the form.

[0003]

A large amount of such form panels are required in the construction work, and the form panels are considerably expensive in the construction work. In addition, the mold panel once used can be used as a mold again by removing the concrete adhering to the surface with a squeegee machine etc., but the surface of the panel board deteriorates after a few uses and the form panel cannot be used. As a result, a large amount of formwork panels will be discarded during the construction work. In addition, even if the surface of the panel board is flawed or the panel board is cracked at the manufacturing stage or during handling, and the form panel cannot be used, it is discarded without being used. In the past, most of the unnecessary formwork panels were incinerated and disposed of, but incinerating a large amount of formwork panels would be extremely costly, and the impact on the environment cannot be ignored. In addition, in order to reduce such incineration costs, there is a case where unnecessary formwork panels are piled up in one place and left without being discarded, but it is necessary to secure land etc. to leave unnecessary waste. did not become. Furthermore, the production of a large amount of new formwork panels will consume a large amount of forest resources. On the other hand, the formwork panel deteriorates the surface of the panel plate after several uses, but the frame body and the back surface of the panel plate have hardly deteriorated, and it is wasteful to discard such a usable part. In addition, the cost of the frame body is extremely large in manufacturing the formwork panel.

The present invention has been made in order to solve such a problem, and reduces the number of formwork panels to be discarded, reduces the cost of formwork panels in construction work, saves forest resources and saves the environment. It intends to provide a method for regenerating formwork panels that also contributes to conservation.

[0005]

In order to achieve the above-mentioned object, a method of regenerating a concrete form panel according to the present invention is a frame body formed by several crosspieces, and a panel fixed to the frame body with nails. Form frame for concrete made up of a board, the head of the nail is removed in the first step, the panel board is removed in the second step, and the panel board is removed in the third step. The mold form panel for concrete is regenerated by removing the body of the nail that will protrude from the crosspiece of the body and fixing the nail to the frame body with the panel plate turned inside out in the fourth step. is there.

Alternatively, in the first step, the head of the nail is removed in a concrete form panel composed of a frame body formed of several bars and a panel plate fixed to the frame body with nails. Then, in the second step, the panel plate is removed, and in the third step, by removing the panel plate, the body of the nail that protrudes from the crosspiece of the frame is removed, and a new panel is added in the fourth step. The formwork panel for concrete is regenerated by fixing the plate to the frame body with nails.

In the first step, it is desirable to remove the head of the nail by twisting it off.

Alternatively, in the first step, the head portion of the nail may be removed by scraping off the collar portion of the head portion.

[0009]

According to the above-mentioned method, the engagement of the nail for fixing the panel plate and the frame body is released in the first step, the panel plate and the frame body are separated in the second step, and the frame body is again formed in the third step. The body of the nail that protrudes from the crosspiece of the frame body that interferes when fixing the panel plate is removed, and the back surface of the panel plate that has not deteriorated in the fourth step is used as the front surface or a new panel plate is used to form the frame. The panel is played.

If the head of the nail is screwed as a method of removing the head of the nail in the first step, the head can be easily and quickly removed.

Further, as a method of removing the head portion of the nail in the first step, even if the collar portion of the head portion is shaved off, the head portion can be easily and quickly removed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a generally used form panel, in which a panel plate 1 is fixed to a frame body 2 formed by several bars 2a by nails 3, 3 ,. Further, a release agent is applied to the surface A of the panel board 1 in order to easily remove the formwork panel from the hardened concrete.
This form panel is usually made of wood, but synthetic resin or other materials can be used as long as it has a structure in which the form panel 1 is fixed to the frame body 2 with nails 3. Further, the nail 3 may be of any structure as long as it has a structure in which the panel plate 1 is fixed by the collar portion of the head, and may be, for example, a wood screw or the like. Such a formwork panel is usually used 10 to 12 times, and the panel board 1
The surface A is deteriorated and cannot be used. In the present embodiment, the mold panel whose surface A of the panel 1 is deteriorated and cannot be used after being used several times is regenerated. Since the formwork panel to be regenerated usually has concrete adhered to the surface A, this concrete is removed by a keren machine.
When replacing with a new panel board or when the amount of concrete adhering to it is small and does not cause a problem, it is not necessary to put it on the keren machine.

The method of reproducing the formwork panel of the present invention will be described below with reference to FIG. FIG. 2 is a schematic diagram showing the steps of the form panel regenerating method. First, the heads 3a, 3a ... Of the nails 3, 3 ... Are removed by the first step shown in FIG. As a result, the panel plate 1 fixed to the frame body 2 by the head 3a of the nail 3 is released.

Next, the panel plate 1 disengaged from the frame body 2 is removed from the frame body 2 in the second step shown in FIG. When the panel plate 1 is removed from the frame body 2, the body portions 3b, 3b, ... Of the nails 3, 3 ,.

Then, by the third step shown in FIG. 3C, the body portions 3 of the nails 3, 3 ...
b, 3b ... Are removed. As a result, the upper surface of the crosspiece 2a is flattened, and it is possible to install the inverted formwork panel or a new formwork panel on this.

Further, in the fourth step shown in FIG. 3D, the panel plate 1 removed in the second step is turned upside down and installed on the frame body 2 by new nails 3 ', 3' ... The panel board 1 is fixed to the frame body 2. As a result, a new formwork panel is reproduced as shown in FIG.

Further, when the panel plate 1 removed in the second step cannot be used because the back surface has already been used,
As shown in (d ') of the figure, in the fourth step, a new panel plate 1'is installed on the frame body 2, and a new nail 3',
The panel board 1'is fixed to the frame body 2 by 3 '.

Next, specific details of each step will be described. FIG. 3 shows a nail head removing tool 4 used for removing the head 3a of the nail 3 in the first step, which is fixed to a drill chuck of a drilling machine and used. As shown in the figure, the nail head removing tool 4 is a tool having at least two or more conical cutting teeth at the tip of a rod-shaped body, and in this embodiment, four triangular pyramidal protrusions 4a are provided at the tip of the tool. Yes, each protrusion 4a
Blades 4a ', which are pieces of the triangular pyramid, are radially located at a constant angle with respect to the axis of the nail head removing tool 4. The shape of the nail head removing tool 4 is not limited to that shown in FIG. 3, and for example, if the number of the protrusions 4a is two or more, it may be an appropriate number such as three or five, and if the effect can be obtained. For example, any shape of blade can be used. The usage state of the nail head removing tool 4 is shown in FIG. In the figure, the nail head removing tool 4 is fixed to a chuck 5 of a drilling machine (not shown). Further, the drilling machine body is provided with an air injection port 6 which is connected to an air compressor (not shown) for injecting air at high speed. The air jet port 6 is set so that the jet flow hits the head 3a of the nail 3 that has bitten between the protrusions 4a of the nail head removal tool 4 described later. In addition, the form panel is fixed to a fixed base (not shown) that can slide freely in the front, rear, left and right directions.
Now, slide the fixing table appropriately to fix the nails 3 of the formwork panel.
Is located directly below the nail head removal tool 4.

In this state, when the drilling machine is started and the nail head removing tool 4 is rotated and moved downward, the blade 4a 'of the nail head removing tool 4 eventually causes the collar portion 3a' of the head 3a of the nail 3 to move.
The head 3a is sandwiched between the protrusions 4a of the nail head removing tool 4 and fixed. Further, the nail head removal tool 4 is rotated with high torque by the drive source of the drilling machine body,
Since the body portion of the nail is firmly frictionally engaged with the crosspiece 2a of the panel plate 1 and the frame body 2, a large moment is applied to the collar portion 3a 'of the nail 3, and as a result, the head portion 3a of the nail 3 is twisted. Can be cut. After that, when the nail head removing tool 4 is moved upward, the nail head removing tool 4 moves upward while the head 3a of the nail 3 is fixed between the protrusions 4a. However, since the jet flow from the air jet port 6 fixed to the above-mentioned drill presses the head 3a of the nail 3 from the upper side to the lower side, the head 3a is applied by this force to the tip of the nail head removing tool 4. Leave from. When the head 3a of another nail 3 is to be removed, the fixing table (not shown) which fixes the form panel is appropriately slid so that the target nail 3 is located directly below the nail head removing tool 4. Then, the same work as above may be performed.

Further, in the above-mentioned first step, the head 3a of the nail 3 is removed by twisting it off. This is done by scraping off the collar 3a 'of the head 3a.
You may remove a. In this case as well, the same nail head removing tool 4 as described above can be used. That is, the speed of moving the nail head removing tool 4 downward may be reduced with the same device and the same setting as the method of twisting off the head 3a of the nail 3 described above. By doing so, the blade 4a 'of the nail head removing tool 4 is moved downward by the downward movement of the nail head removing tool 4, and the collar portion 3a' of the head 3a of the nail 3 is moved.
However, since the downward movement speed is low, the biting amount is small, and the force for the blade 4a ′ to scrape the outer periphery of the collar portion 3a ′ is smaller than the force for rotating the head 3a of the nail 3. Since the collar portion 3a 'can be scraped off, and the blades 4a' on the four sides have a narrower interval with each other as they go upward, the collar portion 3a 'can be removed by the blade 4a' of the nail head removing tool 4.
Gradually scraped off by the end, and finally the collar part 3a '
The head 3a of the nail 3 can be removed by scraping off all of them.

Although the form panel is slidable in the present embodiment, the form panel is fixed and the chuck to which the nail head removing tool 4 is attached is slidable. Alternatively, the nail head removing tool 4 may be positioned right above the nail 3 by sliding. Further, in the present embodiment, the projection 4a has the same shape both when the head 3a of the nail 3 is twisted off and when the collar 3a 'of the head 3a is shaved off.
This may be changed into a proper shape for twisting and for cutting.

Next, in the second step, the panel plate 1 is removed from the frame body 2. The panel plate 1 is already removed from the frame body 2.
Heads 3a of nails 3, 3 ...
Since it has been removed, the panel plate 1 can be easily removed from the frame body 2. For example, a burl can be inserted between the panel 1 and the frame body 2, and the panel plate 1 can be easily separated from the formwork 2 by the principle of leverage.

FIG. 5 shows a nail barrel removing device for removing the barrel portions 3b, 3b, ... Of the nails 3, 3, ... Projecting from the crosspiece 2a of the frame body 2 in the third step. The structure of this device is such that a fixed base 7 that can slide before and after fixing the form panel 1, a rail 8 that serves as a guide for the forward and backward movement of the fixed base 7, and a nail 3 that can be adjusted to an arbitrary height. It is configured by a grinder 9 for cutting and removing the body portion 3b.

A method of removing the body portions 3b, 3b, ... Of the nails 3, 3 ,. First, in the second step, the panel plate 1 is removed, and the frame body 2 in which the body portions 3b, 3b, ... Of the nails 3, 3 ,. . Then, the height of the grinder 9 is appropriately adjusted so that the file surface of the grinder 9 substantially coincides with the upper surface of the crosspiece 2a. Then, the grinder 9 is rotated to slide the frame body 2 together with the fixed base 7 toward the grinder 9. By this sliding, the edge of the rotating part of the grinder 9 first comes into contact with the body part 3b of the nail 3 and cuts it. Then, when the frame body 2 slides further, the cut surface of the body portion 3b of the nail 3 passes through the file surface of the lower surface of the rotating portion of the grinder 9,
This cut surface is further ground to have almost the same height as the upper surface of the crosspiece 2a. Thereafter, when the frame body 2 is further slid, the body portions 3b, 3b, ... Of the nails 3, 3 ... Can be removed one after another in the same manner as above, and the upper surface of the frame body 2 is completely removed. Become flat. In this embodiment, the two grinders 9 are the frame 2
Since the frame body 2 is configured to cover the entire width, the frame body 2 can remove all the body portions 3b of the nails 3 once the device is passed through the device.

The body portion 3b of the nail 3 does not necessarily have to be removed by cutting the body portion 3b as described above. For example, the body portion 3b protruding from the upper surface of the rail 2a is hammered or the like. The protruding body portion 3b may be removed by a method such as tapping into the inside or cutting off the body portion 3b.

Finally, the fourth step will be described. In the fourth step, the panel 1 (1 ') is newly attached to the frame body 2 by the nails 3', 3 '.
.. is required to be fixed, but in the present embodiment, a nailing machine as shown in FIG. 6 is used to drive the nails 3 ', 3' ... into the panel 1 (1 '). The nailer is a frame 2
And a side rail 11 and a side roller 12 that regulate the left and right movements of the frame 2 and a horizontal rail 10 that serves as a guide when sliding the back and forth, and an air cylinder (not shown),
The hammer portion 13 drives the nail 3'by the vertical movement of the air cylinder, and the nail supply portion 14 supplies the nail 3'to the hammer portion 13.

The side rails 11 have rollers 11a arranged in a line on the inner side as shown in the figure, and the side rollers 12 are composed of two rollers 12a. As shown in FIG. 7, the roller 11a and the roller 12a are provided with a step 16 respectively. As will be described later, this step portion is for correcting the panel plate 1 to the frame body 2 so that both edges of the panel plate 1 are inside about 1 mm from both edges of the panel plate 1, The height h to the step in the figure is slightly lower than the height of the frame body 2, and the width d of the step is about 1 mm. The side rails 11 and the side rollers 12 are provided so as to face each other on both sides of the front part of the nailing machine, and are set so that the shortest distance between the rollers 11a and the rollers 12a matches the lateral width of the frame body 2. There is.

Further, on the inner surfaces of the side rails 11 and the side rollers 12, the crosspieces 2 located on both sides of the frame 2 are provided.
Auxiliary rollers 15 and 15 are provided to control the deflection of a'and 2a '. As shown in FIG. 7, the auxiliary roller 15 includes a roller portion 15a having a vertical rotation axis, a vertically movable vertical air cylinder 15b, and a horizontal air cylinder 15c horizontally movable toward the side rail 11 or the auxiliary roller 12. Configured. Normally, the vertical air cylinder 15b is recessed downward, and the horizontal air cylinder 15c is located inside the side rail 11 and the side roller 12. And these vertical air cylinder 15b and horizontal air cylinder 15c
A limit switch 15d is provided on the side of the side roller 12 in parallel with the side roller 12 on the side of the hammer 13. The limit switch 15d is pushed by the front edge surface of the frame body 2 to bring it to the 0N state, whereby the vertical air cylinder 15b
Moves upward and the horizontal air cylinder 15c moves to the side rail 11
Side or the auxiliary roller 12 side, the roller portions 15a, 15a of the auxiliary rollers 15, 15 respectively,
The crosspieces 2a 'and 2a' located on both sides of the frame 2 are set to be pressed against the side rails 11 and the side rollers 12 with appropriate strength.

The hammer portion 13 is a horizontal rail 1
0 and side rails 11 are arranged at right angles and in a horizontal direction at an appropriate number and at appropriate intervals.
It is set so that the formwork 2 carrying the can pass through the lower side of the hammer portions 13 which are horizontally arranged. A pedal switch 13a and a button switch 13b are provided for starting the hammer portion 13, and the hammer portion 13 is set to perform a nailing operation once when these switches are turned on once.

In the fourth step, the panel plate 1 removed in the second step as described above is turned over and fixed with a new nail 3'on the frame body 2 (hereinafter referred to as the fourth step A). ) And a case where a new panel plate 1'is fixed on the frame body 2 with a new nail 3 '(hereinafter referred to as a fourth step B). First, the fourth step A will be described. In the fourth step A, first, the frame body 2 having the flattened upper surface in the third step is placed on the horizontal rail 10 of the nailing machine and slid toward the hammer portion 13 to move the frame body 2 to the side surface. It is held between the rail 11 and the side roller 12. As a result, the frame body 2 can be restricted so that it can slide only forward and backward. Next, the panel plate 1 removed in the second step is turned upside down, and the front and rear ends of the panel plate 1 are placed on the frame body 2 so as to be aligned with the front and rear ends of the frame body 2. In this state, the frame 2 is slid together with the panel plate 1 toward the hammer portion 13 of the nailing machine, and when the front end of the upper surface of the panel plate 1 is positioned vertically below the hammer portion 13 of the nailing machine, The sliding of the frame body 2 and the panel plate 1 is stopped, and the pedal switch 13a or the button switch 13b of the hammer portion 13 is turned on. As a result, the hammer portion 13 drives the nail 3 ′ from the panel plate 1 to the crosspiece 2 a of the frame body 2. When one nailing operation is completed, the hammer 3 is replenished with the nail 3'from the nail supply unit 14. When the first nailing operation is finished, the frame 2 is again slid forward together with the panel plate 1 and when the predetermined distance is advanced, the form frame 2 and the panel plate 1 are stopped again, and the pedal switch 13a.
Or, turn on the button switch 13b and press
The panel plate 1 and the frame body 2 are again hammered with the nail 3'by.
Similarly, the nails 3 ', 3' ... are sequentially driven at appropriate intervals. In the nailing machine of this embodiment, the hammer portions are provided in parallel at right angles to the longitudinal directions of the panel plate 1 and the frame body 2. Therefore, once the nailing machine is used, nails are provided at all predetermined positions of the panel plate 1. You can hit 3 ', 3' ...

In the nailing operation described above, since auxiliary rollers 15 and 15 are provided on the inner surfaces of the side rails 11 and the side rollers 12 of the nailing machine, the crosspieces 2a located on both sides of the frame 2 are provided. The deflection of'2a 'can be regulated. The operation of the auxiliary roller 15 will be described below. First, since the vertical air cylinder 15b of the auxiliary roller 15 is initially depressed downward, and the horizontal air cylinder 15c is located inside the side rail 11 and the side roller 12, the front end surface of the frame body 2 has the auxiliary roller 15b. It is possible to freely slide back and forth on the lower rail 10 without being blocked by the. In this state, as described above, the frame body 2 slides together with the panel plate 1 toward the hammer portion 13 of the nail driving machine. Eventually, the front end surface of the frame body 2 passes above the auxiliary roller 15 to start the auxiliary roller 15.
The limit switch 15d is turned on by pressing d. As a result, as described above, the vertical air cylinder 15b moves upward, the horizontal air cylinder 15c slides toward the side rail 11 or the side roller 12, and the roller portions 15a of the auxiliary roller 15 are provided on both sides of the frame body 2. The crosspiece 2a ′ located is pressed against the side rail 11 or the side roller 12 with appropriate strength. As a result, when it is exaggeratedly expressed, the crosspiece 2a ′ of the frame body 2 which is bent as shown by the solid line in FIG. 9 is passed between the auxiliary roller 15 and the side rail 11 or the side roller 12, so that FIG.
It can be straightened as shown in the imaginary line.

Further, since the roller 11a of the side rail 11 and the roller 12a of the side roller 12 are provided with the above-mentioned step portions 16, respectively, as shown in FIG.
2a ', 2a' located on both sides of the auxiliary roller 15
By being sandwiched between the roller 11a and the roller 11a, the two edges of the frame body 2 are fixed to the both edges of the panel board 1 by about 1 mm inside, respectively. By hitting 3 ', the formwork panel plate 1 can be fixed to the frame body 2 in this state.

Next, the fourth step B will be described. The outline of the fourth step B is almost the same as that of the fourth step A. In the fourth step A, the panel plate 1 removed in the second step is turned upside down. The only difference is that a different panel plate 1'is used. That is, the fourth step B
First, the frame body 2 having the flattened upper surface in the third step is placed on the horizontal rail 10 of the nail driver, and the frame body 2 is sandwiched between the side rails 11 and the side rollers 12. And
A new panel board 1'is placed on the frame body 2, and the front and rear ends of the panel board 1'are placed together with the front and rear ends of the frame body 1. In this state, the frame body 2 together with the panel board 1 is hammered by a nailing machine. Sliding in the direction of 13, and by the same operation as described above, the panel plate 1'is driven and fixed to the frame body 2 with the nails 3 ', 3' ... at appropriate intervals. The new panel 1 is not limited to a wooden panel, and may be a resin panel, a metal panel, or the like, depending on the application.

Although the new form panel is regenerated by the above four steps, a release agent is usually applied to the newly regenerated form panel before use. Further, as a feature of the form panel regenerated by the present invention, the nail 3 from which the head 3a has been removed remains in the crosspiece 2a of the frame body 2, and when the fourth step 4A has passed, A release agent is applied to the back surface of the panel.

According to the present invention, the most expensive frame body 2 is used as it is in the stage of manufacturing the form panel by the above-mentioned method. A damaged formwork panel can be inexpensively regenerated. Further, if the method shown in the fourth step A is used, since the back surface of the panel plate 1 which has not been deteriorated at all is used as it is, the formwork panel can be regenerated at a lower cost. When the method shown in the fourth step B is used, both the front surface and the back surface of the panel plate 1 are deteriorated and cannot be used, and when the frame body 2 can still withstand use, the frame body 2 New formwork panel can be regenerated without wasting. And since the formwork panel can be regenerated inexpensively as described above, the number of new formwork panels required for construction can be greatly reduced, so that the cost of the formwork panel in construction can be reduced,
At the same time, forest resources can be saved. In addition, the number of formwork panels to be discarded can be reduced, the cost of incineration for disposal can be reduced, and the environmental impact of incineration can be reduced. further,
There is almost no need to secure land, etc. for leaving unnecessary things.

In the first step of the present invention, the nail head removing tool 4 is used to remove the head 3a of the nail 3 by cutting it off, and the air injection port 6 provided in the drilling machine main body for injecting air at high speed. As a result, the head 3a of the nail 3 sandwiched between the tips of the nail head removal tool 4 is blown off, so that the head 3a of the nail 3 can be removed quickly and easily.

Further, even if the head 3a is removed by scraping off the head 3a of the nail 3 in the first step instead of twisting it off, the removal work of the head 3a of the nail 3 can be performed easily. it can.

Furthermore, when the head 3a of the nail 3 is twisted off as described above, or when the collar of the nail head is scraped off,
If the nail head removing tool 4 having two or more conical cutting blades formed on the tip of the rod-shaped body is used, the work of twisting the head 3a of the nail 3 or the collar portion 3a ′ of the head 3a of the nail 3 is performed. It is very convenient for scraping work, and can be performed easily and quickly.

Further, since the nail barrel removing device as described above is used to remove the barrel portion 3b of the nail 3 projecting from the bar 2a of the frame body 2 in the third step, all the barrel barrels can be removed by one operation. The body 3b can be removed, and at the same time, the upper surface of the frame 2 can be finished flat.

Since the nailing machine as described above is used in the fourth step, the panel plate 1 (1 ') can be easily manufactured in one step.
Can be fixed to the frame body 2. Further, the nailing machine has the auxiliary rollers 15 for appropriately pressing the crosspieces 2a ′ on both edges of the frame body 2 against the side rails 11 or the side rollers 12 of the nailing machine as described above. Body 2
It is possible to regenerate a form panel having no bending on the crosspiece 2a of each of the side rails 11 and the rollers 12a of the side roller 12 and the step portion 16 described above.
Since the remanufactured formwork panel can be formed so that both edges of the frame body 2 are about 1 mm inward from both edges of the panel board 1, the frame body 2 can be assembled at the time of assembling the formwork during construction. It is possible to arrange the panel boards 1 without any gap, without contacting each other.

[0041]

Since the present invention is constructed as described above, it has the following effects. That is, it is possible to simply and inexpensively recycle a form panel that has been discarded in the past as a new form panel by using a frame body or a back surface of a panel plate that can be sufficiently used. When the frame can be used after both sides are exhausted, a new form panel can be easily and inexpensively reclaimed by using this frame.

In the first step, if the head of the nail is removed by twisting the head of the nail, the head can be removed easily and quickly, so that the work efficiency is improved. be able to.

Further, in the first step, the work can be easily performed by removing the head portion of the nail by scraping off the collar portion.

Further, according to the present invention, since the formwork panel can be simply and inexpensively regenerated as described above, the cost of the formwork panel in the construction can be saved and the production amount of the new formwork panel can be reduced. It reduces the consumption of forest resources, reduces the number of formwork panels to be incinerated, reduces the incineration cost, and reduces the environmental impact of incineration. You can eliminate the need to secure space.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a formwork panel for concrete.

FIG. 2 is a schematic view showing each step of the present invention.

FIG. 3 is a perspective view showing a nail head removing tool.

FIG. 4 is a perspective view showing a usage state of the nail head removing tool.

FIG. 5 is a perspective view showing a nail barrel removing device.

FIG. 6 is a perspective view showing a nailing machine.

FIG. 7 is a diagram showing a step portion of a side rail and a roller of a side roller.

FIG. 8 is a perspective view showing an auxiliary roller of the nail driving machine.

FIG. 9 is a view showing a state in which the bending of the formwork panel is corrected by an auxiliary roller.

[Explanation of symbols]

1 panel board 2 frame 3 nails 3a nail head 3a 'nail head collar 3b nail body 4 nail head removal tool 6 air injection port 11 side rail of nailer 11a side rail roller 12 nail Side roller of hammering machine 15 Auxiliary roller 16 Steps provided on side rail and side roller roller

Claims (4)

(57) [Claims] 1. A first step for removing a nail head from a concrete formwork panel comprising a frame body formed of a plurality of crosspieces and a panel plate fixed to the frame body with nails. , A concrete comprising a second step of removing the panel plate, a third step of removing the body of the nail protruding from the crosspiece, and a fourth step of turning over the panel plate and fixing it to the frame with a nail How to recycle the form panel. 2. A first step of removing a nail head of a concrete formwork panel composed of a frame body formed of several bars and a panel plate fixed to the frame body with a nail, A concrete mold comprising a second step of removing the panel plate, a third step of removing the body of the nail protruding from the crosspiece, and a fourth step of fixing a new panel plate to the frame body with the nail. How to play the frame panel. 3. The method for recycling a concrete formwork panel according to claim 1, wherein in the first step, the head of the nail is twisted off to remove the head. 4. The method of regenerating a concrete form panel according to claim 1, wherein in the first step, the head portion of the nail is removed by scraping off the head portion of the nail.