JPH0849411A - Method for adjusting length of concrete foam panel - Google Patents

Abstract

PURPOSE:To enable a concrete form panel that can fully endure use to be used with its length adjusted by a method comprising a first process for cutting the concrete form panel longitudinally, a second process for cutting a vertical sash bar into a length not less than the thickness of a stile, and a third process for providing a new stile between the interior wall faces of two stiles. CONSTITUTION:A form panel A whose length is to be adjusted is mounted on an anchor block 40, circular saws 41a, 41b are actuated, and the anchor block 40 slides in the direction of the saw 41a to cut the panel A longitudinally into a certain length. When the anchor block 40 slides in the opposite direction, the saw 41b is moved upwards, by the action of a second limit switch 42b, to a position where a vertical sash bar 3 located inside the panel A can be cut, and as the anchor block 40 further slides, the vertical sash bar 3 is cut by the saw 41b into an amount almost equal to the thickness of a short-sized stile 2b. The new stile 2b is held in place by nails or the like between the interior wall faces of two stiles 2a which are opposite to each other on the cut plane of the panel A, to obtain a form panel A' whose length has been adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of adjusting the length of 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 is composed of a panel plate 1 forming an inner wall of the formwork, a frame body 2 for fixing the panel plate 1, and a vertical crosspiece 3 for reinforcing the frame body 2. The frame 2 is composed of several frames, and in order to have strength, it must be formed such that a short frame 2b in the width direction is sandwiched inside a long frame 2a extending in the longitudinal direction.

The formwork panels are appropriately assembled to form a formwork for the skeleton. The shape of the end portion is special depending on the shape of the building to be built. In order to make it, I made a special form panel of distorted shape.

[0004]

Generally, the formwork panel can be reused about 10 times in terms of physical properties, but the above-mentioned distorted formwork panel is specially designed for building a specific building. Since it was made in, it cannot be used for other construction work. For this reason, conventionally, such a distorted formwork panel has been discarded or abandoned although it is almost the same as a new formwork panel in terms of physical properties.

The present invention has been made in order to solve such a problem, and an object thereof is to make it possible to use a form panel whose length is adjusted so that it can withstand sufficient use.

[0006]

In order to achieve the above object, in the method for adjusting a concrete form panel length according to the present invention, a frame body formed of several frames and a longitudinal direction inside the frame body are provided. A concrete formwork panel composed of several vertical bars provided and the frame body and a panel plate fixed to the vertical bars is used. Of the vertical rail, and then in the second step, the vertical rail is cut from the cutting surface to at least the thickness of the frame, and finally, in the third step, a new frame is cut into two frames that face each other. The length of the concrete form panel is adjusted by installing it between the inner wall surfaces of the concrete.

It is desirable that the second step be performed by a circular saw that relatively slides only between two opposing frames on the cut surface of the concrete formwork panel.

Further, in the first step and the second step, the saws provided so that the distance between the two parallel and parallel planes is at least the thickness of the frame or more are used to form the concrete form panel and the two saws. May be performed by sliding relative to each other.

[0009]

According to the above method, the form panel can be made to have an arbitrary length in the first step, and a new frame is sandwiched between the opposing frames on the cut surface side of the form panel in the second step. A space is created, and in the third step, a new frame is sandwiched between opposing frames on the side of the cut surface and fixed, whereby a complete form panel whose length is adjusted can be obtained.

Further, if the second step is carried out by a circular saw that relatively slides only between two frames facing each other on the cut surface of the concrete form panel,
Two stiles facing each other on the cut surface are not cut, and only the vertical rail is cut.

Further, in the first step and the second step, using a saw provided so that the distance between two parallel and parallel planes is at least the thickness of the frame, concrete form panel and two saws are used. If it is performed by sliding relative to each other, the first step and the second step will be continuously performed.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a view of the form panel A for concrete used for adjusting the length used in this embodiment, as viewed from diagonally below. The form panel A includes a panel plate 1, a plurality of frames 2a in the longitudinal direction and a frame 2b in the width direction, like a normal form panel.
And several vertical rails 3. The form panel for adjusting the length is not limited to the one having a discontinuous shape as shown in the figure, and a normal rectangular form frame panel can be adjusted to any length as necessary.

FIG. 3 is a perspective view showing a length adjusting device 4 used for adjusting the length of the form panel A in this embodiment. The base of the lower part of the length adjusting device 4 is omitted in the drawing. The length adjusting device 4 includes a fixed base 40 for fixing the form panel A, a first circular saw 41a for cutting the form panel A, a second circular saw 41b for cutting the vertical crosspiece, and a fixed base 40 for the form panel A. Rail 42 that slides in the width direction
It is composed by. The fixed base 40 slides on a rail 42 at right angles to the longitudinal direction, and two circular saws 41a,
Both 41b are provided parallel to the sliding direction of the fixed base 40. Further, the fixed table 40 has the circular saws 41a, 41
A gap 40e is provided at a portion passing through b.

The fixed base 40 comprises a plurality of rollers 40a for sliding the form panel A in the longitudinal direction, a set of frames 40b for supporting both ends of each of the rollers 40a, and a set of frames 4.
0b is provided with a positioning rail 40c provided on the upper surface of one side, and a fixing device 40d provided on the other side of the pair of frames 40b. The positioning rail 40c is used to set the length of the form panel A to be cut. A measuring jig 40c 'and a positioning jig 40c''for fixing the mold frame panel A at a position where the mold frame panel A can be cut to a length set by the measure 40c' are provided. '
Can be fixed on any position by sliding on the positioning rail 40c. The fixing device 40d uses an air cylinder to position the pad portion 40d 'on the positioning rail 4d.
The pad portion 40 has a mechanism for sliding in the direction of 0c.
The frame panel A is pressed against the positioning rail 40c and fixed at d '. The air cylinder can be controlled by a foot pedal (not shown).

The two circular saws 41a and 41b are set so that the distance between the parallel and parallel planes is substantially the same as the thickness of the frame 2b having a short length, and the first circular saw 41a is cut from the form panel A. With an appropriate outer diameter for
It is fixed to a base (not shown) of the length adjusting device 4, and when the fixed base 40 is slid along the rail 42, the fixed base 4 is fixed.
The form panel A fixed at 0 is installed at a position where it can be cut. The second circular saw 41b can move in the vertical direction and is normally located at the lower side. In this state, the second circular saw 41b does not hit the form panel A. Then, the second circular saw 41b is set so as to cut only the vertical rails 3 of the formwork panel A and not to cut the panel plate in the state in which it is positioned at the uppermost position. Since the distance between the planes parallel to 41a is set to be substantially equal to the length of the short frame 2b, the cutting length of the vertical bar 3 is substantially equal to the thickness of the short frame 2b.

On the rail 42 that slides the fixed base 40 in the cutting direction of the form panel A, three limit switches for controlling the movement of the second circular saw 41b, which will be described in detail later, namely, length adjustment. A first limit switch 42a located on the center side of the device 4, a second limit switch 42b adjacent thereto, and a third limit switch 42c located outside the length adjusting device 4 are provided.

Below, the length adjusting device 4 having the above-mentioned structure
A method for adjusting the length of the concrete formwork according to the present invention using the above will be described. First, the positioning jig 40 is adjusted by aligning the scale with the length of the form panel to be obtained by the measure 40c 'of the positioning rail 40c of the fixed base 40.
C ″ is fixed to the positioning rail 40c. And
The formwork panel A whose length is to be adjusted is placed on the fixed base 40 at the position shown in FIG. 3, the end of the formwork panel A is brought into contact with the positioning jig 40c ″, and in this state, the fixing device 40d.
The air cylinder is controlled by a foot pedal (not shown), and the air cylinder controls the form panel A.
Is pressed against the positioning rail 40c and fixed to the fixed base 40.

Then, as a first step, a round saw 4
1a and 41b are started, and the fixed stand 40 is moved to the first round saw 4
The form panel A is cut by sliding it in the direction of 1a. At this time, since the second circular saw 41b is located below, it does not hit the form panel A. By this operation, the form panel A is cut into a necessary length as a whole as shown in FIG.

By the way, in view of the strength of the form panel A, a new short frame 2b must be provided so as to be sandwiched between the long frames 2a on both sides. Since the tip of the vertical rail 3 exists between the long frames 2a on the surface side, a new short frame 2b cannot be fixed. Therefore, as the second step, when the fixing table 40 is slid in the opposite direction to the first step, the second circular saw 41b is moved further by the action of the second limit switch 42b, so that the vertical crosspiece 3 located inside the form panel A is moved. Move up to a position where you can cut. If the fixing table 40 is further slid in this state, the vertical bar 3 is entirely cut by the second circular saw 41b.
The cutting amount of the vertical rail 3 is approximately equal to the thickness of the short frame 2b as described above. By this second step, the form panel A is in a state in which the ends of the vertical bars 3 are cut by the thickness of the new short frame 2b as shown in FIG. 4 (b). Further, when all the vertical bars 3 are cut by the action of the first limit switch 41a, the second circular saw 41b moves downward and returns to the original state. That is, the second circular saw 41b is the form panel A
Only the two frames facing each other on the cut surface of the above will relatively slide.

Finally, as a third step, as shown in FIG. 4 (c), as will be described later, between the inner wall surfaces of the two frames 2a facing each other in the cut surface of the form panel A obtained in the second step. By fixing the new short frame 2b manufactured by the above method with nails or the like, a complete form panel A'of which the length is adjusted can be obtained.

The operation of the three limit switches 42a, 42b, 42c provided on the rail 42 in the second step will be described in more detail below with reference to FIG. FIG. 5 is a principle view schematically showing a cross-sectional view of the length adjusting device 4 and showing a method of controlling the second circular saw 42b. Each of the limit switches 42a, 42b, 42c is capable of detecting the passage of one of the frames 40b of the fixed base 40 described above. First, as shown in FIG. The third limit switch 42c is turned on when A is cut to the required length as a whole. Then, in the second step, when the elongated frame 2a of the form panel A passes over the second circular saw as shown in FIG. 5B, the second limit switch 42b of the rail 42 senses this. And FIG.
When all the vertical bars 3 are cut as shown in (c), the third limit switch 42a of the rail 42 is set at this position.
Is detected and the second round saw blade 41b moves back to the original state. That is, the three limit switches 42a, 42
By b and 42c, relative sliding is achieved only between two frames which face each other on the cut surface of the form panel A of the second circular saw 41b.

The new short frame 2b used in the third step can also be manufactured by the length adjusting device 4 by using the frame positioning jig 40f as shown in FIG. The frame positioning jig 40f can slide on the positioning rail 40c of the fixed base 40 and can be fixed at an arbitrary position. The frame contact surface 40f 'of the frame positioning jig 40f has a positioning rail 40c. It is set to be at a right angle to. This frame positioning jig 40f is fixed by a measure 40c 'of the positioning rail 40c so as to correspond to the required length of the frame 2b, and as shown in FIG. 7, the end faces of several plates are mounted on the frame positioning jig 40f. The plate is placed in contact with the contact surface 40f 'and the air cylinder of the fixing device 40d is controlled to position each plate member on the positioning rail 40f.
Press down on c and fix. In this state, round saw 4
By starting 1a and sliding the fixed base 40 toward the first circular saw 41a, each plate is cut into a required length, and several short frames 2b can be manufactured at the same time.

By the length adjusting method shown in this embodiment,
It is possible to easily adjust the length by cutting an unnecessary portion of the irregularly-shaped formwork panel that has been conventionally discarded, and it is possible to reuse the irregularly-shaped formwork panel. Further, the length of a form panel having an ordinary shape can be easily adjusted if necessary. Then, in the first step, after cutting the excess portion of the formwork panel, in the second step, the vertical bar 3
Since the tip end portion of the vertical saw 3 is cut, a space is secured in which the tip end portion of the vertical bar 3 is repelled toward the cutting surface side, so that the circular saws 41a and 41b are not damaged. Further, the above-mentioned length adjusting device 4 can complete the above-mentioned first step and second step in one step, and work can be performed very easily and efficiently. Further, since the frame 2b can be manufactured by the length adjusting device 4, it is possible to perform all the work with one length adjusting device 4.

In the above embodiment, the form panel A fixed to the fixed base 40 is slid with respect to the circular saws 41a and 41b.
1a and 41b may be slid relative to each other, for example, round saws 41a and 41b may be slid with respect to form panel A, and both circular saws 41a and 41b and form panel A are It may be slidable. Further, the saw used is not limited to the round saw, and a band saw, a thread saw, or the like can be used as appropriate. Further, it is not always necessary to use the limit switch to control the vertical movement of the second circular saw 41b, and an optical sensor, a magnetic sensor, or the like may be used as long as it is a sensor capable of detecting the position. It is also possible to keep the dynamic velocity constant and control it temporally.

[0025]

The present invention has the following effects due to the above configuration. First of all, since the length of any formwork panel can be adjusted, it is possible to reuse the formwork panel with a distorted shape that has been discarded or left unused once it has been used in the past. The cost for forests and the cost for disposal can be reduced, which can contribute to the conservation of forest resources.

Further, since the length of the form panel of ordinary shape can be adjusted as needed, it is easy when a form panel having a nonstandard length is required at the end of the form or the like. It is possible to obtain the formwork panel of the required length, and it is possible to save the labor of manufacturing a new formwork panel.

In the first step, the surplus portion of the formwork panel is cut, and the vertical rung is cut in the second step with the tip of the vertical rung exposed on the cut surface of the formwork panel. A space for being flipped to the side of the cutting surface when the tip portion of the is cut is secured, and the saw or the like that cuts the vertical bars in the second step does not hurt.

Further, if the second step is carried out by a circular saw which relatively slides only between two frames facing each other on the cut surface of the concrete form panel, the two saws facing each other on the cut surface are provided. Since the frame of the book is not cut, it is possible to easily and reliably cut only the vertical rails, so that the second step can be efficiently performed.

Then, using two saws provided in parallel in the first step and the second step so that the distance between the parallel surfaces is at least equal to or more than the thickness of the frame, a concrete form panel and two saws are used. If it is performed by sliding relative to each other, the first step and the second step will be performed continuously, so the work of saving the work of replacing the saw and marking the cutting position of the vertical bar is saved. Further efficiency can be improved.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing another example of the concrete form panel.

FIG. 3 is a perspective view showing a length adjusting device.

FIG. 4 is a diagram showing a method for adjusting the length of a concrete form panel.

FIG. 5 is a diagram showing a method for controlling the second circular saw.

FIG. 6 is a perspective view showing a frame positioning jig.

FIG. 7 is a plan view showing a method for manufacturing a frame by the length adjusting device.

[Explanation of Codes] A Concrete Form Panel 1 Panel Plate 2 Frame 2a Long Frame 2b Short Frame 3 Vertical Bar 4 Length Adjusting Device 40 Fixing Base 40c Positioning Rail 40d Fixing Device 40f Frame Positioning Jig 41a No. Ichimaru saw 41b Second circle saw 42 Rail 42a First limit switch 42b Second limit switch 42c Third limit switch

Claims (4)

[Claims] 1. A frame body comprising a plurality of frames, a plurality of vertical bars provided in the frame body in a longitudinal direction, and a panel plate fixed to the frame body and the vertical bars. A first step of cutting a certain formwork panel in the longitudinal direction to an arbitrary length, a second step of cutting the vertical bar from the cutting surface to at least the thickness of the frame, and a new frame cutting surface. A method for adjusting the length of a formwork panel for concrete, which comprises a third step of providing between the inner wall surfaces of two frames facing each other in. 2. In the second step, a circular saw that relatively slides only between two frames facing each other on the cutting surface of the concrete form panel is used to remove at least the vertical crosspiece from the cutting surface. The method for adjusting the length of a formwork panel for concrete according to claim 1, wherein the method is performed by cutting to a thickness or more. 3. A concrete formwork panel slides relative to two saws provided so that the distance between the parallel planes is at least equal to or greater than the thickness of the frame. The method for adjusting the length of a concrete formwork panel according to claim 1 or 2, wherein the cutting is performed in the second step. 4. A formwork panel for concrete, the length of which is adjusted by the method for adjusting a formwork panel length for concrete according to claim 1, 2, or 3.