JP6593921B2 - Tatami floor cutting device - Google Patents

Description

  The present invention relates to a tatami floor cutting apparatus. More specifically, the present invention relates to a tatami floor cutting device, and more particularly to a tatami floor cutting device configured to easily adjust the inclination angle of a blade for cutting around the tatami floor.

Conventionally, as for a tatami floor cutting device, a device configured so that the inclination angle of a cutting tool for cutting around the tatami floor can be easily adjusted is disclosed in Patent Document 1.
Patent Document 1 discloses a frame arranged in a cutting direction, a traveling member that travels along the frame, and a turning point that is fixed to the traveling member and that has a certain cutting surface that is lowered from the surface of the tatami floor by a certain dimension. A support substrate having a plurality of arc-shaped elongated holes to be shared, a blade substrate having a plurality of pins that are respectively inserted into the plurality of arc-shaped elongated holes of the support substrate, and the blade substrate A blade assembly comprising a circular cutting blade mounted on a base fixed to the blade and rotated by a motor, and means for shifting the relative position of the blade substrate with respect to the support substrate about the pivot center. A tatami floor cutting apparatus characterized in that the angle of a circular cutting blade is set by turning the blade substrate.

  Patent Document 2 discloses a pair of mounts that can change the interval on a base, a first encoder that detects the interval between both mounts, a cutter that is mounted on each of the mounts and can change the cutting angle, and the cutting of the cutter A second encoder for detecting an angle; and a control means for controlling a distance between the two frames and a cutting angle of the cutter based on pre-input data of the tatami mat and the output of each encoder. Left and right cutting devices that cut the heel into a predetermined size, a turn table that is placed between the pair of mounts and can be moved up and down, a tatami surface chuck device that applies tension to the tatami surface, and tension A floor fastening member for fixing the tatami floor together with the tatami mat, and a sewing device having a sewing machine for sewing the tatami mat to the tatami mat clerk; Table is a device for sewing. The left and right cutting devices can cut both tatami mats at the same time.

  Patent Document 3 includes one cutting device fixed to the end of the base on the sewing machine side, and a moving base that moves on the base. The moving base moves up and down, A first encoder for detecting the interval between the movable frame and the cutting device, and a second encoder for detecting the cutting angle of the cutting device, comprising a turntable for turning 180 degrees and a holding device for holding a tatami floor. And a control means for controlling the position of the movable frame and the cutting angle of the cutting device based on pre-input data of the tatami floor wrinkles and the outputs of the encoders, The cutter of the above-mentioned cutting device that cuts to a predetermined size while, a tatami mat chuck device that applies tension to the tatami mat, a floor fastening member that fixes the tatami mat floor with the tatami mat, and a tatami mat floor Sewing tatami mat A device for sewing the tatami mat by cutting stile of tatami floor, characterized by and a sewing device having that sewing machine. The tatami mat is cut only on one side, and after one of the cuts, the tatami floor is turned by 180 degrees and cut.

Japanese Patent No. 5120935 Japanese Patent No. 3451538 Japanese Patent No. 3646924

The tatami floor cutting apparatus disclosed in Patent Document 1 is a cutting blade that is rotated by a motor. A driving source that rotates the cutting blade is necessary, and the angle is adjusted as a unit for driving the cutting blade. In addition, there is a problem that it is desired to make it possible to adjust the angle of the cutting blade with ease even in a conventionally known tatami floor cutting device for a fixed knife in which the cutting blade does not rotate.

In order to solve the above problems, the present invention has a frame disposed in a cutting direction, a blade fixing portion that moves along the frame, and the blade fixing portion includes a base member that fixes the cutting blade, and a cutting member. One point of the cut surface that is composed of a blade and a fixing means for fixing the cutting blade, and is lowered by a certain dimension in the vertical direction from the surface of the tatami floor by disposing an angle adjusting spacer between the base member and the cutting blade. Is adjusted so that the cutting blade passes , the angle adjusting spacer having an inclined surface for separating the angle adjusting spacer into at least two spacers and adjusting to the desired angle of the cutting blade, and the angle adjusting spacer having a predetermined thickness In the case where only the angle adjusting spacer having a predetermined thickness is removed and the cutting blade is fixed, one point of the cut surface that is lowered by a certain dimension in the vertical direction from the surface of the tatami floor. And performing change angle adjustment to a point through the surface of the tatami floor is raised in the direction perpendicular.

Also, a said securing means is a screw, with a positioning groove provided on the angle adjustment spacers positioned in the vertical direction of the spacer for angular adjustment in a state of contact with the screw is performed.

  By arranging an angle adjusting spacer between the base member and the cutting blade, the angle is adjusted so that the cutting blade passes through one point of the cut surface that is lowered by a certain dimension from the surface of the tatami floor. The angle adjustment can be easily handled by changing the angle adjustment spacer.

  By separating the angle adjusting spacer into at least two spacers and using an angle adjusting spacer having an inclined surface that adjusts to a desired angle of the cutting blade and an angle adjusting spacer having a predetermined thickness, it is constant from the surface of the tatami floor. When the cutting blade is fixed by removing only the angle adjustment spacer with the specified thickness and the cutting blade fixed by a certain dimension, the cutting surface point lowered by a certain dimension is raised vertically. By changing to a single point that passes through the surface of the tatami floor, the shape of the side surface of the tatami floor can be changed by selectively using the point that will be the pivot center for adjusting the angle of the cutting blade between the thick tatami floor and the thin tatami mat. Can be easily changed to a desired shape.

  The fixing means is a screw, and the angle adjusting spacer is positioned in the vertical direction with the positioning groove provided in the angle adjusting spacer in contact with the screw. When adjusting the angle, loosen the screw. If so, the angle adjustment spacer can be changed, and it is possible to improve usability. Further, since it is only necessary to loosen the screw and drop the angle adjusting spacer from above, the angle adjustment can be performed easily and efficiently when the angle adjustment is performed many times.

Furthermore, it has the flame | frame arrange | positioned in the cutting direction, and the blade fixing | fixed part which moves along this frame, and the blade fixing | fixed part fixes the base member which fixes a cutting blade, a cutting blade, and a cutting blade. The angle desired by the user by adjusting the angle so that the cutting blade passes through one point on the surface of the tatami floor by disposing an angle adjusting spacer between the base member and the cutting blade. It can be easily handled by changing the angle adjustment spacer.

It is a figure explaining the blade fixing | fixed part seen from the heel side of the tatami. It is the side view of FIG. 1 seen along the moving direction of a cutter. It is explanatory drawing of the spacer for thick tatami for making a cutting angle into 8 degree | times, (a) is a front view, (b) is a side view. It is explanatory drawing of the spacer for thick tatami for making a cutting angle into 8 degree | times. It is a figure of the fixing member for clamp | tightening and fixing a blade when adjusting an angle, (a) is a front view, (b) is a side view. It is a figure explaining the state which loosened the screw for fixation in order to adjust the angle of a cutter. It is a figure explaining the state which inclined and fixed the angle of the cutter to 13 degree | times. It is a figure explaining the state fixed without making the angle of a cutter incline. It is explanatory drawing for making a cutting angle into 8 degree | times with a thin tatami. It is explanatory drawing for making a cutting angle into 13 degree | times with a thin tatami. It is a figure explaining that the turning center of a cutting blade is located in the inside of a fixed-size tatami from a tatami surface by a thick tatami. It is a figure explaining that the turning center of a cutting blade is located in the tatami surface by a thin tatami.

  Since the structure in the tatami floor cutting apparatus can be the structure known in Patent Document 2 and Patent Document 3 of the prior art, the main part of the angle adjustment of the cutting blade according to the present invention will be illustrated and described.

  FIG. 1 illustrates a blade fixing portion 2 viewed from the tatami heel side in the tatami floor cutting apparatus 1. FIG. 2 is a side view of FIG. 1 viewed along the moving direction of the blade.

  The blade fixing part 2 is provided on a moving base 3 that is moved in the cutting direction, and the moving base 3 is provided with guide wheels 6 that come into contact with rails 5 provided on the cutting frame 4. By being guided by the rail 5 along the cutting frame 4, the blade fixing portion 2 moves and cuts the tatami floor with high dimensional accuracy.

  The blade fixing portion 2 is configured such that the cutting blade 20 is fixed by two screws 21, and an angle adjusting spacer is interposed between the blade base 22 and the cutting blade 20 when fixing to the blade base 22. The cutting angle of the cutting blade 20 can be adjusted.

  When the cutting blade is fixed without using the angle adjusting spacer, the side surface of the tatami floor is cut at a right angle with respect to the surface on which the tatami mat is attached. (See Figure 8)

  Further, the blade fixing part 2 is a cutting edge 23 for cutting a corner of the tatami floor at a right angle in advance to a predetermined depth or more, and the cutting edge 23 is detachable. It is often removed when cutting tatami floors.

  The state shown in FIGS. 1 and 2 shows a state in which a thick tatami floor is set at a cutting angle of 8 degrees, and the cutting blade 20 is inclined between the cutting blade 2 and the cutter base 22 by 8 degrees for inclining the cutting blade 20 by 8 degrees. One angle adjusting spacer 24 and a first angle adjusting spacer 25 are interposed. In addition, in order to fasten with the screw 21, an 8 degree washer 26 is interposed between the cutting blade 20 and the screw head of the screw 21, so that a force due to the inclination is not applied to the screw portion of the screw 21 and the fastening is performed securely. To be able to.

  FIG. 3 shows the first angle adjusting spacer 24. 3A is a front view of the first angle adjusting spacer 24, and FIG. 3B is a side view. Since the cutting blade 20 is fixed along the inclined surface 24a, the cutting blade 20 is adjusted to the inclination angle of the inclined surface 24a.

  FIG. 4 illustrates the second angle adjustment spacer 25. As shown in FIG. 2, the second angle adjustment spacer 25 is disposed on the blade base 22 side, the first angle adjustment spacer 24 is disposed on the cutting blade 20 side, and between the cutting blade 20 and the screw head of the screw 21. The 8 degree washer 26 shown in FIG. 5 is arranged, and the cutting blade 20 is fixed with the screw 21.

  Reference numeral 24b denotes a positioning groove for contacting the screw 21 to position the first angle adjusting spacer 24 in the vertical direction. If the position of the first angle adjusting spacer 24 in the vertical direction is shifted, the cutting dimension of the tatami floor changes when the angle of the cutting blade 20 is changed. A configuration in which the cutting blade 20 is always aligned with a point P lowered in the vertical direction by a dimension H, and the angle adjusting spacer is easily positioned in the vertical direction so that the cutting blade 20 is aligned with the point P. Is necessary.

  By aligning the inclined surface 26a of the 8 degree washer 26 with the cutting blade 20, the screw head of the screw 21 comes into contact with the vertical surface of the 8 degree washer 26, so that no bending stress is applied to the screw head of the screw 21. It is fixed.

  Even if the second angle adjusting spacer 25 and the 8 degree washer 26 are displaced in the vertical direction, the cutting size of the tatami floor is not affected. Therefore, the dimension of the groove portion engaged with the screw 21 is not particularly concerned. Also good. As shown in FIG. 6, the screw 21 is loosened, and the first angle adjusting spacer 24 and the second angle adjusting spacer 25 are arranged between the blade base 22 and the cutting blade 20 from above, and the 8 degree washer 26 is a cutting blade. If the first angle adjusting spacer 24 is positioned between the screw heads 20 and 21, the first angle adjusting spacer 24 can be positioned. Therefore, it is easy for the operator to use and the angle of the cutting blade 20 can be adjusted reliably.

  The portion where the first angle adjusting spacer 24 and the second angle adjusting spacer 25 abut on the screw portion of the screw 21 may be a cylindrical portion with a half screw. When the angle is repeatedly adjusted, it is possible to prevent the thread from being deformed and the dimensional accuracy from being deteriorated. Even in the case of all screws, a collar thinner than the thickness of the first angle adjustment spacer 24 and the second angle adjustment spacer 25 is fitted to the screw portion, and the collar is the first angle adjustment spacer 24 and the second angle adjustment spacer 25. You may make it contact | abut. These items can be applied in the same manner when adjusted to a different angle.

  FIG. 7 shows a state where the angle of the cutting blade 20 is adjusted to 13 degrees. Between the blade base 22 and the cutting blade 20, a third angle adjustment spacer 27 is disposed on the cutting blade 20 side, and a fourth angle adjustment spacer 28 is disposed on the blade base side. Further, a 13-degree washer 29 is arranged between the cutting blade 20 and the screw head of the screw 21 and fixed with the screw 21.

  The third angle adjusting spacer 27 has the same shape as that of the first angle adjusting spacer 24, and the thickness of the spacer and the angle of the inclined surface are set to 13 degrees, so that the illustration is omitted. Similarly, the fourth angle adjusting spacer 28 is different from the second angle adjusting spacer 25 only in thickness, and is not shown. Further, the 13-degree washer 29 is not shown because it is the same as the 8-degree washer 26 except for the angle of the inclined surface.

  In the present embodiment, it has been described that the cutting blade 20 matches the point P at the position where the positioning groove 24b abuts the screw portion of the screw 21, but a reference line is provided in the blade base 22 in the horizontal direction, A reference line may be provided on the one-angle adjusting spacer 24, and the reference line of the blade base 22 and the first angle adjusting spacer 24 may be aligned in a straight line so as to be positioned in the vertical direction.

  Alternatively, a step may be provided on the blade base 22 and the upper side or the lower side or the like of the first (or third) angle adjusting spacer 24 may be brought into contact with the step to perform vertical positioning.

  Still further, a positioning projection may be provided on either the blade base 22 or the first (or third) angle adjusting spacer 24, and a concave portion for fitting the projection on the other side may be provided for positioning. good. When providing the protrusion and the recess, the second (or fourth) angle adjusting spacer 25 may be provided with a hole through which the protrusion is inserted.

  In order to prevent the first angle adjustment spacer 24 and the fourth angle adjustment spacer 28 from being used in an incorrect combination, the side surfaces of the spacer are colored and colored to determine whether the spacer is for 8 degrees. It may be possible to determine whether the spacer is suitable for the degree by looking at the side. By coloring various colors at angles other than 8 degrees and 13 degrees, a combination error can be eliminated. Of course, in addition to coloring, the shape of the cutout on the side surface may be changed for each angle, and a combination error may be determined based on whether or not the cutout shape matches.

  Next, thin tatami cutting will be described. FIG. 9 is a view showing a state in which the angle of the cutting blade 20 is adjusted to 8 degrees by cutting a thin tatami mat. Only the first angle adjusting spacer 24 is disposed between the blade base 22 and the cutting blade 20, and an 8 degree washer 26 is disposed and fixed between the cutting blade 20 and the screw head of the screw 21.

  FIG. 10 is a view showing a state in which the angle of the cutting blade 20 is adjusted to 13 degrees by cutting a thin tatami mat. Only the third angle adjusting spacer 27 is disposed and fixed between the blade base 22 and the cutting blade 20.

  Compared to FIG. 2, by removing the second angle adjusting spacer 25 in FIG. 9, the cutting blade 20 does not coincide with the point P shown in FIG. It is made to correspond to the point Q which rose by a fixed dimension H in the direction. That is, the position of the point Q matches the position of the surface of the tatami mat in the horizontal direction.

  Also in FIG. 10, by removing the fourth angle adjusting spacer 28, the cutting blade 20 does not coincide with the point P shown in FIG. 11 as shown in FIG. It matches the raised point Q.

  FIG. 11 illustrates a locus of the cutting blade 20 in which the angle of the cutting blade 20 is adjusted in accordance with a point P lowered from the surface of the tatami by a certain dimension H, and FIG. 12 is constant in the vertical direction from the point P. The locus of the cutting blade 20 in which the angle of the cutting blade 20 is adjusted in accordance with the point Q raised by the dimension H is shown. Therefore, point P and point Q are the turning centers of the cutting blade.

  Of course, as disclosed in Patent Document 1 (Japanese Patent No. 5120935), the surface of the tatami mat is aligned with the point P even in the case of thin tatami mats by inserting a spacer having a thickness H between the tatami mat floor and the floor presser. It is also possible to adopt a configuration in which cutting is performed. However, rather than sandwiching a spacer with a thickness H between the tatami floor and the floor presser, the angle of the cutting blade 20 can be adjusted depending on whether the second angle adjusting spacer 25 or the fourth angle adjusting spacer 28 is attached or removed. It is possible to improve the usability for the operator by switching the turning center of the blade between the case where the tatami is thick and the case where the tatami is thin.

  In the above, in the thick tatami mat, the first angle adjustment spacer 24 and the second angle adjustment spacer 25 adjust the angle to 8 degrees, and the third angle adjustment spacer 27 and the fourth angle adjustment spacer 28 adjust the angle to 13 degrees. However, the first angle adjustment spacer 24 and the second angle adjustment spacer 25 are integrated into one 8 degree adjustment spacer, and the third angle adjustment spacer 27 and the fourth angle adjustment spacer 28 are integrated into one 13 degree. It is good also as an adjustment spacer. By doing so, an 8 degree spacer for thick tatami mats, a 13 degree spacer for thick tatami mats, an 8 degree spacer for thin tatami mats (first angle adjusting spacer 24), a 13 degree spacer for thin tatami mats (first The four spacers of the three-angle adjusting spacer 27) can be used properly.

  In the above description, if the angle adjusting spacer is not used, the cutting angle is a right angle, and the cutting blade 20 has been described with the angles of 8 degrees and 13 degrees. However, other angles can be used as described in the embodiment. It is not limited to just adjusting the angle.

Further, although the point Q has been described above as a thin tatami cut, it may be cut at a point Q that coincides with the surface of the tatami floor without using the leading edge 23. It is also possible for the operator to make a desired angle, whether or not to have a vertically cut section.

DESCRIPTION OF SYMBOLS 1 Tatami floor cutting apparatus 2 Cutler fixing part 3 Moving base 4 Cutting frame 5 Rail 6 Guide wheel 20 Cutting blade 21 Screw 22 Cutlery base 23 Cutting edge 24 First angle adjusting spacer 24a Inclined surface 24b Positioning groove 25 Second angle Adjustment spacer 26 Washer for 8 degrees 27 Third angle adjustment spacer 28 Fourth angle adjustment spacer 29 Washer for 13 degrees

Claims (2)

A frame arranged in the cutting direction, and a blade fixing portion that moves along the frame;
The blade fixing part is
A base member for fixing the cutting blade;
A cutting blade,
Comprising a fixing means for fixing the cutting blade,
The base member and a point just lowered cut surface constant dimension in the vertical direction from the surface of the tatami by to place the angle adjustment spacer angularly adjusted so as to pass the cutting blade during the cutting blade, the angle adjustment Spacer Are separated into at least two spacers, and an angle adjusting spacer having an inclined surface for adjusting to a desired angle of the cutting blade and an angle adjusting spacer having a predetermined thickness, and removing only the angle adjusting spacer having the predetermined thickness and cutting. When the blade is fixed, angle adjustment is performed by changing one point of the cut surface that has been lowered by a certain dimension vertically from the surface of the tatami floor to a point that passes vertically through the surface of the tatami floor. <Br Tatami floor cutting device characterized by A said securing means is a screw, the positioning groove provided in the angle adjusting spacer of claim 1 Symbol mounting, characterized in that the positioning of the vertical spacer angle adjustment in a state of contact with the screw is performed tatami Floor cutting device.