JPH11156070A - Board cutter and board cutting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and safely form a cut in a state of erecting a board by providing a pair of cutting tools with cutting blades facing in parallel with a guiding surface with which the end face of the board is in slide contact at each guide board of a case main body of a U-shaped cross section at a board cutter for cutting a gypsum board or the like. SOLUTION: The board cutter 1 simultaneously cutting the gypsum board or the like from is both side surfaces is provided with a case main body 4 of a U-shaped cross section connecting a pair of guide boards 2 and 2 with a connecting board and a cutting tool 6 to be fixed to each guide board 2 and provided with a guiding surface 5 in slide contact with the end face of the cut tip part of the board and a cutting blade 6A. At the time of using, the tool 6 is vertically moved along a long hole 7 to adjust a distance from the guide surface 5 of each cutting blade 6A according to a desired cut width. After then, in the state of abutting the end face of the cutting tip part of the board 2 inserted into a blank onto the guiding surface 5, the board cutter 1 is horizontally moved along the end face. Thereby a cut is enabled at both side surfaces of the board by a pair of the blades 6A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board cutter and a board cutting method particularly suitable for cutting a gypsum board.

[0002]

2. Description of the Related Art For a board such as a gypsum board used for foundation and finishing of an indoor wall and a ceiling wall of a house, for example, in order to form a wall with high quality without gaps, a standard is required. The end of the sized board is cut to the required dimensions at the work site.

On the other hand, in the cutting operation of the board a, conventionally, as shown in FIGS. 8 (A) and 8 (B), one side s1 of the board a horizontally placed on a floor b or the like is cut by a dimension c to be cut. After removing the board, a deep cut was made along the ruler using a commercially available cutter knife d, the board a was turned over, and the other side face s2 was similarly dimensioned and cut. The cuts from both sides are necessary to make a clean cut, especially for plasterboard,
Since the cardboard surface layer a2 is attached to both side surfaces of the board body a1, the board body a1 penetrates through the surface layer a2.
It is essential to make deep cuts that extend into one from both sides.

However, the conventional cutting operation in which dimensions are cut and cut in each side is inferior in work efficiency, and a thread is formed between the cuts on both sides, leading to a decrease in cutting accuracy and surface quality of the cut surface. In addition, since the operation is performed on the floor surface, the posture and the movement are unreliable, and furthermore, the safety of the cutter knife is poor, for example, the blade of the cutter knife may get over the ruler and cut the thumb of the support.

Accordingly, the present invention provides a board cutter and a board which can easily and safely form a cut without bending simultaneously from both sides by a cutting blade in a state where the board is upright. It aims to provide a cutting method.

[0006]

In order to achieve the above object, a first invention of the present application is a board cutter for cutting a board in parallel with one end face, wherein a pair of guide plates is connected by a connecting plate. A case body having a U-shaped cross section provided with a space into which a cut end portion of the board to be cut can be inserted by splicing, a guide surface that slides on an end surface of the cut end portion of the board,
It is characterized by comprising a pair of cutting tools attached to each of the guide plates and protruding into the space and having cutting blades oriented in a direction parallel to the guide surface.

A second invention is a method for cutting a board using the board cutter, wherein a cutting end of the board to be cut is inserted into the space and the end face of the cutting end is guided by the guide. By moving the board cutter in contact with the surface, both sides of the board are cut by the pair of cutting blades of the board cutter.

Preferably, the case body is provided with an adjusting means for changing a distance between the cutting blade and the guide surface in order to freely adjust and set a cutting dimension. The adjusting means can be formed with a simple structure by using the long holes provided in the above.

[0009] The cutting tool may include a board thickness corresponding means for changing a length of the cutting blade protruding into a space.
Preferred for accommodating cutting of boards of various thicknesses.

It is preferable that the cutting tool has a cutting blade attached to a movable portion which is prevented from rotating by a housing fixed to the guide plate and is urged to a protruding side by a spring. In response, the movable part automatically moves, so that a notch can always be formed at a constant depth in boards of various thicknesses.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a board cutter 1 is a board cutter for simultaneously cutting a board W such as a gypsum board from both side surfaces thereof, and has a cross section in which a pair of guide plates 2 and 2 are joined by a connecting plate 3. It has a U-shaped case main body 4, a guide surface 5 slidably in contact with an end surface Es of a cut end WE from which the board W is cut, and a cutting tool 6 having a cutting blade 6A and attached to each guide plate 2. .

In the present embodiment, the case body 4 is formed by connecting the upper edges of the guide plates 2 and 2 with the connecting plate 3 so that the cut end WE can be inserted between the guide plates 2 and 2. Place H
To form The guide surface 5 is formed by the inner surface of the connecting plate 3 facing the space H. The void H is opened at a peripheral edge other than the upper edge, so that the cut end WE can be inserted, and the board H can be moved laterally while the end surface Es of the board W is in contact with the guide surface 5. .

In the present embodiment, the connecting plate 3 is provided with a cutout 3A whose center is cut off. Each of the guide plates 2 has, at the center thereof, a long hole 7 extending in a vertical direction perpendicular to the guide surface 5, and the long hole 7 guides the cutting tool 6 to form a cutting blade. An adjusting means 9 for making the distance L0 between 6A and the guide surface 5 variable is constituted. In addition, the upper end of the long hole 7 terminates in the cutout portion 3A beyond the guide surface 5 so that the minimum value of the distance L0 can be reduced to near zero. A scale 8 for displaying the distance L0 is provided on a side edge of the long hole 7.

Each guide plate 2 prevents the board W inserted into the space H from being excessively rattled.
In this example, four projecting portions 10 for maintaining the posture, which are protruded into the space H, are formed on both sides of the elongated hole 7 and vertically. The protrusion 10
The guide plate 2 can be formed by drawing or by fixing a projection to the guide plate 2 by welding, bonding, or the like. or,
The distance G between the projections 10 and 10 of the guide plates 2 on both sides
Is about 12.5 to 20.0 mm, preferably about 12 .5 to 20.0 mm, through which a so-called commercially available maximum thickness gypsum board can pass.
Set to about 5 to 15.0 mm.

Note that "upper, lower" used in the description of this embodiment
Are merely used for convenience of description and do not limit the present invention.

As shown in FIGS. 3 and 5, in this embodiment, the cutting tool 6 has a housing 12 which is prevented from rotating and fixed by the elongated hole 7 and a housing 12 which is prevented from rotating and is protruded from the housing 12 (inside side). And a movable portion 15 whose projection length L1 is variable by being urged toward the projecting side by a spring 14 so that the cutting blade 6 is not movable.
A is mounted in a direction parallel to the guide surface 5.

In the present embodiment, the housing 12 has a slot 7.
A cylindrical body 12A having a parallel surface for preventing rotation and guided by both side edges of the cylindrical body and having an elongated hole 7 inserted therein and having an outer thread formed on an outer peripheral surface thereof, and a bulge formed at an inner end of the cylindrical body 12A. And a retaining flange portion 12B to be provided. The housing 12 is provided with an internal screw screwed into the body portion 12A on an inner peripheral surface thereof.
The guide plate 2 is narrowly pressed between the inner end of the fixing cap 13 and the flange portion 12B, and is fixed at an arbitrary height position. In this example, a display ring 17 provided with an arrow portion 17A indicating the height position of the cutting blade 6A is interposed between the inner end of the fixed cap 13 and the guide plate 2. The display ring 17 is extrapolated while being prevented from rotating by the body 12A.

In the present embodiment, the movable portion 15 has a cutting blade 6A.
, A sliding holder 21 that accommodates the cutting blade case 20 and is held in the inner hole 19 of the housing 12, and a cap that fixes the cutting blade case 20 to the sliding holder 21. 22.

As shown in an enlarged view in FIG. 4, the sliding holder 21 has a cylindrical body 25 that is slidably moved back and forth while being prevented from rotating in the inner hole 19. Contact surface 2 which is swelled at the inner end of the
And a head 26 having a 6S. The applicable surface 26S is
In this example, the holding surface 21S has a spherical shape, and a holding hole 21A having a horizontally long cross section extending from the outer end of the body 25 is opened in the contact surface 26S. The outer end portion of the body 25 is connected to the housing 1.
2 and protrudes outward, and external threads are formed on the outer peripheral surface of the protruding outer end portion.

The cutting blade case 20 is provided with the holding holes 21.
A flange portion 30 is bulged at the outer end of the insertion portion 29 having a horizontally long cross section to be inserted into A. The insertion portion 29 is composed of half-split split pieces 31 and 32 that can be split vertically, and one of the split pieces 31 connected to the flange portion 30 has a cutting edge 6A.
A recess 31A is provided for accommodating the cutting edge 6Ae in a lateral direction while projecting the cutting edge 6Ae inward. In this example, the cutting blade 6A has a home base shape (pentagonal shape) provided with blade portions on both sides of the tip of the blade edge, thereby facilitating cutting and improving usability. The other split piece 32 is a lid of the accommodation groove 31A, and the split pieces 31 and 32 are provided with concave and convex portions that fit to each other in order to reliably hold the cutting blade 6A. Further, the cutting blade case 20 is formed such that the inner end surface of the insertion portion 29 is flush with the contact surface 26S when the cutting blade case 20 is attached to the holding hole 21A, thereby preventing the board W from being damaged by contact. I do.

The cap 22 is a cover for fixing the cutting blade case 20 by screwing an external screw of the slide holder 21 to sandwich the flange 30 between the cap 22 and the outer end of the body 25. is there. The cap 22 is connected to the inner hole 1.
By having a diameter larger than 9, the inner end surface functions as a stopper to prevent the movable portion 15 from falling off to the projecting side. Note that a stopper may be separately formed.

The movable portion 15 includes a flange 12B of the housing 12 and a head 26 of the sliding holder 21.
And the length of the cutting blade 6A projecting from the guide plate 2 to the space H by the sliding of the slide holder 21. Let L1 be variable. Therefore, in this example, the housing 12, the movable part 15, and the spring 14 constitute the board thickness corresponding means 32.

Next, a cutting method using the board cutter 1 will be described. In the board cutter 1, first, the cutting tool 6 is moved up and down along the long hole 7 by finger operation on the fixing cap 13, and the distance L from the guide surface 5 of each cutting blade 6A, 6A.
Adjust 0 according to the desired cutting width. After a while, FIG.
As shown in the figure, the cut end WE of the board W is inserted into the space H, and the board cutter 1 is moved along the end face Es in a state where the end face Es of the cut end WE is in contact with the guide surface 5. Move. Thereby, a pair of cutting blades 6A, 6A facing each other
Thereby, both side surfaces of the board W can be cut.

When the board W is inserted, as shown in FIG. 5, the movable portion 15 is automatically retracted in accordance with the thickness of the board W by pushing the board W between the heads 26, 26. . In addition, the contact surface 26A is changed to the board W by the bias of the spring 14.
, The cutting depth of the cutting blade 6A can be kept constant during movement. Further, when such an automatic board thickness correspondence means 32 is provided, a reliable cutting can be performed even on a board whose thickness is partially changed, such as a lath board having a large number of circular holes on its surface or a sound absorbing board. It can be performed.

FIG. 7 shows another example of the adjusting means 9. In the figure, the adjusting means 9 includes a guide plate 35 fixed to the case body 4 and a moving plate 36 guided and moved by the guide plate 35. The guide plate 35 is a guide plate 2
, A guide gap 35A extending in a direction perpendicular to the guide surface 5 is formed between each guide plate 2.

The moving plate 36 is held vertically movably through each guide gap 35A.
A U-shape connecting the upper edges of A with the joint pieces 36B is formed. At the lower end of each moving plate piece 36A, a cutting tool 6 having a board thickness corresponding means 32 is attached as described above. The moving plate 36 is fixed by fixing screws 37 provided on the guide plate 35.
Do with.

In the present application, the present invention can be used for cutting boards of various materials without being limited to gypsum board, and its structure can be changed to various without being limited to this embodiment.

[0028]

As described above, the board cutter according to the first aspect of the present invention is provided with a cutting tool provided on each of the guide plates of the case body into which a board end can be inserted between a pair of guide plates, with the cutting blades facing each other. Therefore, the notch can be easily and safely formed at the board end without bending simultaneously from both sides by the cutting blade in a state where the board is erected.

According to the second aspect of the present invention, since the case body is provided with an adjusting means for changing the distance between the cutting blade and the guide surface, the cut-off dimension of the board end can be freely adjusted and set. it can.

According to a third aspect of the present invention, the adjusting means is formed by an elongated hole provided in the guide plate, and as set forth in the fifth aspect, the guide surface is formed on the surface of the connecting plate facing the space. The structure can be simplified and lightened.

According to a fourth aspect of the present invention, since the cutting tool has a board thickness corresponding means for making the protruding length of the cutting blade variable, it is possible to cope with the cutting of the ends of boards of various thicknesses. it can.

Further, since the cutting blade of the cutting tool is attached to the movable portion biased to the projecting side by the spring,
The movable part can be automatically moved according to the thickness of the board to be inserted, and the cuts can be formed stably at a constant depth at the ends of the boards having various thicknesses.

[0033] In the cutting method of the second invention, the board cutter is moved while the end face of the board is in contact with the guide surface.
Similarly, in order to cut both sides of the board by a pair of facing cutting blades, similarly, easily and safely form a cut at the board end without bending simultaneously from both sides by the cutting blades in a state where the board is upright. Can be.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a board cutter according to the first invention.

FIG. 2 is a side view thereof.

FIG. 3 is an exploded perspective view thereof.

FIG. 4 is an exploded perspective view showing a cutting tool in an enlarged manner.

FIG. 5 is an enlarged sectional view showing a cutting tool together with a board thickness corresponding means.

FIG. 6 is a diagram illustrating a cutting method according to a second invention.

FIG. 7 is a perspective view showing another embodiment of the adjusting means.

8 (A) and 8 (B) are diagrams illustrating cutting of a conventional board.

[Explanation of symbols]

 1 Board cutter. 2 Guide plate 3 Connecting plate 4 Case body 5 Guide surface 6 Cutting tool 6A Cutting blade 7 Slot 9 Adjusting means 12 Housing 14 Spring 15 Movable part 32 Board thickness corresponding means Es Board end face H Space L0, L1 Distance W Board WE cut end

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[Procedure amendment]

[Submission date] March 12, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

In order to achieve the above object, a first invention of the present application is a board cutter for cutting a board in parallel with one end face, wherein a pair of guide plates is connected by a connecting plate. A case body having a U-shaped cross section provided with a space into which a cut end portion of the board to be cut can be inserted by splicing, a guide surface that slides on an end surface of the cut end portion of the board,
A pair of cutting tools attached to each of the guide plates and protruding into the space and having cutting blades oriented in a direction parallel to the guide surface, wherein the case body includes the cutting blades of the cutting tool.
And adjusting means for making the distance between the guide surface and the guide surface variable.
And the cutting tool is adjusted by the adjusting means.
Non-rotatable on the guide plate variably with the distance between the guide surface
And fixed housing
Stopped and unable to fall out to the protruding side and protruded by the spring
Movable with a protruding length that is variable by being urged to the exit side
And the cutting blade is attached to the movable part .

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

The case body includes the cutting blade and the guide surface.
With adjustment means for making the distance between
The cutting dimension can be adjusted and set freely.
It can be formed by a long hole provided in the guide plate.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

Further, the cutting tool is fixed to the guide plate.
Locked by a gusset and urged to the protruding side by a spring
Since the cutting edge is attached to the movable part that is
The moving parts automatically move according to the thickness of the board
Notches are always formed at a constant depth on boards of various thicknesses
Wear.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

[0009] The cutting tool is vacant of the cutting blade by a spring.
Equipped with a board thickness adapting means that can change the projecting length to the place
To cut the edges of boards of various thicknesses
It is preferable in doing.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

According to a second aspect of the present invention, the board cutter is used.
Cutting the board, wherein the board is located in the space.
Insert the cut end of the cut end and the end of this cut end
Move the board cutter with the surface in contact with the guide surface
The pair of cuts of the board cutter.
The cutting edge is used to cut both sides of the board.
You.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

In the present embodiment, the connecting plate 3 is provided with a cutout 3A whose center is cut off. Also each guide plate 2 has, at its center, and the guide face 5 has a long hole 7 extending perpendicular vertical direction, the long hole 7, Turkey <br/> to guide the cutting tool 6 Thus, the adjusting means 9 for making the distance L0 between the cutting blade 6A and the guide surface 5 variable is configured. The upper end of the long hole 7 is
The guide surface 5 is terminated above the cutout 3A above the guide surface 5, whereby the minimum value of the distance L0 can be reduced to near zero. A scale 8 for displaying the distance L0 is provided on a side edge of the long hole 7.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

When the board W is inserted, as shown in FIG. 5, the movable portion 15 is automatically retracted in accordance with the thickness of the board W by pushing the board W between the heads 26, 26. . In addition, the contact surface 26A is changed to the board W by the bias of the spring 14.
, The cutting depth of the cutting blade 6A can be kept constant during movement. In addition, since such automatic board thickness correspondence means 32 is provided , even a board whose thickness is partially changed, such as a lath board having a large number of circular holes on its surface or a sound absorbing board, can be reliably used. Cutting can be performed.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0029

[Correction method] Change

[Correction contents]

[0029] Also since the provided adjustment means for varying the distance between the cutting edge and the guiding surface in the case body, freely adjust the size cutting off the board edge can be set.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

Further, the cutting blade of the cutting tool is attached to the protruding side by a spring.
This spring is attached to the movable
Functions as a means to respond to board thickness with variable protrusion length
And can accommodate the cutting of board edges of various thicknesses
it can.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction contents]

Further , as in claim 2, the adjusting means is
Change the position of the cutting tool to allow the distance between the cutting blade and the guide surface.
It is formed by an elongate hole to be deformed, and further as claimed in claim 3.
The housing of the cutting tool is rotated with the slot of the guide plate.
It is stopped and fixed.

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

According to a fourth aspect of the present invention, the guide surface is connected to the connection
Since it is provided on the surface facing the empty space of the plate, its structure is simple
And lightening.

Claims (7)

[Claims] 1. A board cutter for cutting a board in parallel with one end face thereof, wherein a pair of guide plates are joined by a connecting plate to form a space into which a cut end of the board can be inserted. It has a case main body having a U-shaped cross section, a guide surface slidably in contact with an end surface of a cut end of the board, and a cutting blade attached to each of the guide plates, protruding into the space and parallel to the guide surface. A board cutter consisting of a pair of cutting tools. 2. The board cutter according to claim 1, wherein the case main body includes an adjusting means for changing a distance between the cutting blade of the cutting tool and the guide surface. 3. The board cutter according to claim 2, wherein said adjusting means comprises an elongated hole for changing a position of said cutting tool and changing a distance between a cutting blade and a guide surface. 4. The board cutter according to claim 1, wherein said cutting tool includes a board thickness corresponding means for varying a length of the cutting blade projecting from the guide plate to the cavity. 5. The board cutter according to claim 1, wherein the guide surface is provided on a surface of the connecting plate facing a space. 6. A cutting tool, wherein the cutting tool is prevented from rotating and fixed to the elongated hole of the guide plate, is prevented from rotating by the housing, cannot fall off to the projecting side, and is urged toward the projecting side by a spring. The board cutter according to any one of claims 1 to 5, further comprising a movable portion having a variable protrusion length, and a cutting blade attached to the movable portion. 7. A method for cutting a board using the board cutter according to claim 1, wherein a cutting end of the board to be cut is inserted into the space, and the cutting is performed. A board cutting method, wherein a board cutter is moved while an end face of the board is in contact with the guide surface, so that both side faces of the board are cut by the pair of cutting blades of the board cutter.