JP2001314676A - Apparatus for cutting frame of tatami mat and sewing tatami facing to tatami mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a labor-saving apparatus which cuts the frame of a tatami mat and sews a tatami facing to the tatami mat, easing the labor for cutting the frame of a tatami mat and sewing a tatami facing and which needs a small area to be fixed on in order to serve the table face of the apparatus as the space for tatami operations. SOLUTION: This apparatus has a cutting device 2 fixed on the sewing-machine side or the other end of the base and a moving frame 61 which moves on the base. The moving frame 61 has a holding device 66 to hold a tatami mat and a turn table 65 which goes up and down and rotates the tatami mat by 180 degrees. The apparatus also has a first encoder 80 to detect the distance between the moving frame and the cutting device, a second encoder 29 to detect the cutting angle of the cutting device and a control device to control the position and the cutting angle of the cutting device according to the outputs of the encoders and the pre-inputted data of specifications of a tatami. The apparatus also has a cutter 24 for mending the warps of a tatami frame and cutting it in a predetermined size, a tatami-facing chuck device 4 for giving tension to the tatami facing, a mat holding member 35 for fixing the tatami mat with the tatami facing while holding the tension on the tatami facing and a sewing device 3 having a sewing machine 31 for sewing the tatami facing on the frame of the tatami mat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame stitching apparatus for cutting a frame on a tatami floor to a predetermined size and sewing a tatami table on the cut frame, and more particularly, to save labor in a series of frame stitching operations. Things.

[0002]

2. Description of the Related Art As means for solving this problem, Japanese Patent Laid-Open Publication No. 9-2
No. 50229 is known. The present invention provides a pair of mounts that can change the interval on a base, a first encoder that detects the interval between the two mounts, a cutter that is mounted on each of the mounts and that can change a cutting angle, and a cutting angle of the cutter. The second encoder to be detected has a computer for setting the interval between both stands and the cutting angle of the cutter based on the input data of the tatami mat and the output of each of the above encoders, while cutting the frame of the tatami floor. A left and right cutting device that cuts to a predetermined size, a turntable that is arranged in the middle of a pair of gantry and that can move up and down, a tatami table chuck device that applies tension to the tatami table, and a tatami floor with tension applied. The sewing machine had a floor tightening member to be fixed together with the tatami mat and a sewing machine having a sewing machine to sew the tatami mat on the frame of the tatami mat.

[0003]

SUMMARY OF THE INVENTION Japanese Patent Application Laid-Open No. 9-25022
The device according to No. 9 cuts the frame of the tatami floor to the specified size,
It has two right and left cutting devices. This device performs two functions of "cutting a tatami floor to a predetermined size" and "sewing an extended tatami mat on a cut frame." On the other hand, the production of tatami mats involves "sewing tatami mats on the cut tatami floor" and "new tatami mats" work and "peeling out the old tatami mats, turning over or replacing the tatami mats and sewing""replacement" It is roughly divided.

[0004] The work of "rearranging" involves measuring the dimensions of the tatami mat brought back from the room in which it is laid, cutting the thread that has sewn the tatami mat, and peeling the tatami mat. For this peeling operation, a table or table made of a frame made of square wood or the like is usually used.

However, when two cutting devices are provided on the left and right sides of the central turntable as in the device disclosed in Japanese Patent Application Laid-Open No. 9-250229, a cutter for cutting and a floor tightening member are provided at the upper part. The operation of peeling the tatami mat cannot be performed on this device. In addition, since two cutting machines are provided, the apparatus becomes complicated and expensive, and the installation space is increased.

[0006] Therefore, it is possible to use a single cutting machine having two left and right sides and to peel off the tatami mat on the table, and it is possible to cut the tatami mat by cutting the frame on the tatami floor. It is conceived to provide a "sewing device".

[0007]

An apparatus for cutting a frame of a tatami floor 7 and sewing a tatami mat according to the present invention includes a fixed gantry 86 fixed to one end of a pedestal, and a movable gantry moving on the pedestal. 61,
The first encoder 80 for measuring the distance between the movable gantry 61 and the cutting cutter 24, and the cutting gantry 21 placed near the end of the base on the sewing machine side, the end of which is the rotation center 26 on the base, The cutting angle can be changed. A second encoder 29 for detecting the cutting angle of the cutter,
The tatami mat data previously input and each of the encoders 8
0 and 29, the moving frame 61 and the cutting frame 21
And a cutting device 2 having a control means for controlling the interval of the cutter 24 and the cutting angle of the cutter 24, and cutting to a predetermined size while straightening the frame of the tatami floor, and a turn which is disposed on the movable gantry 61 and can be moved up and down. A table 65 and a turntable 6 for fixing the tatami floor on the turntable 65;
5, a holding device 66 attached to the tatami mat 5, a tatami mat chuck device 4 for applying a tension to the tatami mat, a floor tightening member 35 for fixing the tatami mat with the tatami mat in a state where the tension is applied, and a sewing machine 31 for sewing the tatami mat to a frame of the tatami mat. And a sewing device 3 having the following.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) An apparatus for cutting a frame of a tatami floor and sewing a tatami mat according to the present invention is shown in a plan view of FIG. 1 and a front view of FIG. A movable gantry 61 having a turn table 65 having a holding device 66 for holding the floor, a cutting device 2 for cutting the frame of the tatami floor 7 to a predetermined size, and a tatami table 8 on the frame of the tatami floor 7. And a sewing device 3 for sewing.

A cutting device 2 for cutting a frame of a tatami floor 7 is shown in FIG.
As shown in FIG. 2, a movable gantry 61 capable of changing the distance between the gantry and the cutting gantry 21 by moving the gantry to the left and right by a screw 82 and a cutting gantry 21 placed near the base end of the sewing machine. It consists of.

FIGS. 2 and 3 (FIG. 3 is an arrow D in FIG. 2)
The sectional view in -D is shown. )
Table 2 on which table 65 and tatami floor 7 of cutting device 2 are placed
When the tatami floor 7 is placed on the tatami floor 2, upper front stoppers 23T and 23 are attached to the tatami floor 7 for pressing and positioning the tatami floor 7. The upper front stopper 23 is provided on the turntable 65.
A holding device 66 for fixing the tatami floor 7 pressed against T and positioned on the turntable is attached. Further, the cutting device 2 has a table 22 on which the tatami floor 7 is placed, and an upper front stopper 2 which presses the tatami floor 7 for positioning.
3. A floor tightening member 25 for fixing the positioned tatami floor 7 and a cutter 24 for cutting the tatami floor 7 are provided. The cutting device 2 can be rotated by a motor 27 and a screw 28 with its end as a rotation center 26. And an encoder 29 for detecting the rotation angle of the cutting device 2 is provided. In addition, an encoder 80 is provided to detect an interval between the movable gantry 61 and the cutting cutter 24.

The sewing device 3 is a table 22 of the cutting device 2.
And the turntable 65 of the movable gantry 61 and the fixed gantry 86
, A frame stopper 33 for pressing and positioning the cut frame of the tatami floor 7, and a second fixing the tatami floor 7 placed on the table together with the tatami table 8.
And the sewing machine 31 that moves along the rails 11 provided on the base 1 to sew the tatami table 8 on the frame, and winds the end 81 of the tatami table 8 protruding from the tatami floor 7 into the frame. FIG.
And a tatami surface winding device 36 shown in FIG. As shown in FIG. 4, the tatami surface winding device 36 has an elastic band 39 supported by a frame 38 that rotates about a fulcrum 37.
With this elastic band 39, the protruding end 81 of the tatami table 8 is wound around the frame.

Further, the sewing device 3 is provided with a tatami surface chuck device 4 for applying tension to the tatami table 8 by pulling an unsewn end portion 81 of the tatami table 8. As shown in the side views of FIGS. 5A to 5C, the tatami surface chuck device 4 includes a frame 41 and a lower bar 42 fixed to a lower portion of the frame 41.
An upper bar 43 that is raised and lowered by a first air cylinder 44; a second air cylinder 46 that moves the frame 41 up and down by rotating one end of a link 45 as a fulcrum; Frame 41 with the end as a fulcrum
Is rotated, and a third air cylinder 47 that applies tension to the tatami mat 8 sandwiched between the lower bar 42 and the upper bar 43 is provided.

Further, based on the data of the tatami mats input from the keyboard, the commands from the keys, the commands from the switches, and the outputs from the encoders 80 and 29, the control of each motor and the control of each air cylinder are performed. In addition, a microcomputer for displaying necessary information on a display device is provided.

Next, steps required until a tatami mat is completed by the thus configured apparatus of the first embodiment will be described.

(1) By operating the keyboard, the length before and after
Enter data such as the habit of the frame. Of course, the dimension data may be transferred to the device without operating the keyboard.

(2) Check the initial state of each device (whether or not it has returned to the origin position).

(3) When the push button switch S1 is pressed, the cutting position of the cutter 24 and the turntable 65 at the point T2 of the tatami mat to be finished are compared with the finished length L of the tatami mat where the output of the encoder 80 is set. Of the center line of L /
The drive motor 83 is rotated so as to be 2. Subsequently, the cutting condition of the cutter 24 is set by changing the rotation angle of the cutting device 2 so that the output of the encoder 29 matches the habit of the set frame (the frame on the A side in FIG. 6). FIG.
Since the frame on the A side has no distortion (distortion), the rotation angle of the cutting device 2 becomes zero.

(4) Fixed stand 86, turntable 6
5. The tatami floor 7 is placed on the table 22 of the cutting device 2 so as to straddle the tatami floor 7, and the upper front side of the tatami floor 7 is pressed against the upper front stoppers 23T, 23 for positioning.

(5) Turntable 65 holding device 6
6, and the floor tightening member 25 of the cutting device 2 is lowered to fix the tatami floor 7 on the turn table 65 and the table 22 of the cutting device 2. (6) The cutter 24 is driven to move the frame of the tatami floor 7. Is cut on one side (A side in FIG. 6). The cutter 24 is as follows (7)
To the original position at any time from (11) to (11).

(7) The floor tightening member 25 is raised so that the turntable 65 holds the tatami floor 7. (8) While holding the tatami floor 7 with the holding device 66,
The table 65 is raised, and the movable gantry 61 is moved toward the fixed gantry 86 so that the held tatami floor 7 does not come into contact with the cutting device, the upper front stopper or the like even when the turntable is rotated by 180 degrees. (9) The turn table 65 is rotated 180 degrees.

(10) The cutting condition of the cutter 24 is set by changing the rotation angle of the cutting device 2 so that the output of the encoder 29 matches the habit of the set frame (the B-side frame in FIG. 7). . (11) For the upper front length L of the tatami floor on which the output of the encoder 80 is set, the cutter 2 at the finishing tatami point T1
The drive motor 83 rotates so that the distance between the cutting position of No. 4 and the center line of the turntable 65 becomes L / 2. As shown in FIG. 7, a shift of e from the vertical line of the center of rotation 26 occurs on the side of the frame B, so the tatami point T1 of the tatami mat to be finished is moved to a position that matches the cutting position set in (10) above. . Regarding the dimension e, the upper front drop allowance x (see FIG. 6) due to stabbing, the center of the turntable and the center of rotation 26
, The vertical distance W1 between the center of the turntable and the center of rotation 26, and the size of the custom tatami mat. Of course, operation methods other than this operation can also be executed by calculation,
The description is not intended to limit the invention.

(12) The turntable 65 is lowered. At this time, the distance W1 between the center of the turntable 65 and the positioning surface of the upper front stoppers 23T, 23 (FIG. 6)
) Is made wider than 1/2 of the width of the tatami floor, so that even if the table is lowered after turning 180 degrees, the tatami floor 7 does not hit the upper front stoppers 23T, 23. (13) The floor tightening member 25 of the cutting device 2 is lowered, and the tatami floor 7 is turned on the turntable 65 and the table 2 of the cutting device 2.
(14) The cutter 24 is driven to cut one side (the B side in FIGS. 6 and 7) of the frame of the tatami floor 7 to complete the cutting of the frame.

(15) The floor tightening member 25 is raised to return the cutter 24 to the original position. The floor is bent with a manual lever to bend the tatami floor 7. At this time, the tatami table 8 is placed on the sewing machine side of the tatami floor 7.

(16) The frame stopper 33 of the sewing device 3 is raised, and (17) the operator moves the right frame to the frame stopper 33 of the sewing device 3.
To align the upper front reference position of the tatami floor 7 with the upper front dropping portion of the tatami table 8. At this time, the end 81 of the tatami mat 8 is placed on the sewing machine side of the tatami floor 7 so as to protrude from the frame of the tatami floor 7 and placed.

(18) When the foot switch S2 is depressed,
The floor tightening member 35 of the sewing device 3 descends to fix the tatami floor 7.

(19) When the operation switch is pressed, as shown in FIG. 4, the tatami surface winding device 36 is operated to wind the protruding end 81 of the tatami surface 8 into the frame, and (20) the sewing machine 31 is initialized. The sewing machine moves forward toward the tatami floor 7 from the position, approaches the tatami floor 7, starts a sewing operation of sewing the tatami table 8 to the frame of the tatami floor 7, and before the sewing work position reaches the tatami table winding device 36, the tatami table winding. The winding operation of the winding device 36 is released.

(21) When the operation of sewing the tatami table 8 to the frame of the tatami floor 7 is completed, the thread connected between the tatami floor 7 and the sewing machine 31 is cut, and the floor tightening member 35 of the sewing device 3 is removed. When the tatami floor 7 is released by raising the tatami floor 7, the turn table 65 pulls back the tatami floor, and then the sewing machine 31 retreats to the initial position.

(22) When the turn table 65 retreats to a position where it does not interfere even when the tatami floor 7 is turned, it stops, the turn table 65 is raised higher than the upper front stoppers 23T, 23, and the tatami floor 7 is turned 180 degrees. Rotate.

(23) After rotating the tatami floor 7 by 180 degrees,
After the turntable 65 moves forward and sends the tatami floor 7 to the sewing machine side, it is lowered to the same height as the table 22 of the cutting device 2 and the fixed base 86, and (24) the frame stopper 33 of the sewing device 3 is raised. Then, the operator presses the left frame against the frame stopper 33 of the sewing device 3 and positions the lower frame before the tatami floor 7 rotated by 180 degrees.

(25) As shown in FIG. 5B, the second air cylinder 46 is operated to lower the frame 41 of the tatami mat chuck device 4, and the lower bar 42 and the upper bar 4 of the frame 41 are moved downward.
3 through the unsewn end 81 of the tatami table 8, actuating the first air cylinder 44 to lower the upper bar 43 to sandwich the end 81 of the tatami table 8; When the switch is operated, FIG.
As shown in (c), the third air cylinder 47 of the tatami mat chuck device 4 is operated to pull the end 81 of the tatami mat 8 to apply tension. This tension can be determined by the air pressure at which the third air cylinder 47 is operated.

(27) Further, the floor tightening member 3 of the sewing device 3
5 is lowered and fixed to the tatami table 8 in a state where tension is applied. (28) The frame stopper 33 of the sewing device 3 is lowered,

(29) As shown in FIG. 5A, the first air cylinder 44 of the tatami surface chuck device 4 is deenergized,
After the upper bar 43 releases the end 81 of the tatami table 8 and raises the frame 41, (30) When the operation switch is pressed, as shown in FIG. (31) The sewing machine 31 moves forward from the initial position toward the tatami floor 7 and approaches the tatami floor 7, and starts a sewing operation of sewing the tatami table 8 to the tatami floor 7 frame. Before the sewing position reaches the tatami surface winding device 36, the winding operation of the tatami surface winding device 36 is released.

(32) When the operation of sewing the tatami table 8 to the frame of the tatami floor 7 is completed, the thread connected between the tatami floor 7 and the sewing machine 31 is cut, and the floor tightening member 35 of the sewing device 3 is removed. When the tatami floor 7 is released by raising the tatami floor 7, the turn table 65 pulls back the tatami floor 7, and then the sewing machine 31 retreats to the initial position.

(33) When the turn table 65 is retracted to the home position and the tatami floor 7 is taken out, one tatami floor 7
The process of cutting the frame and sewing the tatami table 8 is completed. By the above operation, after performing one frame cutting, rotate the tatami floor, perform the other frame cutting, and then perform the frame stitching,
The process of rotating the tatami floor after the sewing is completed to perform the frame stitching is controlled by the control device, so that the frame can be cut and sewn efficiently.

(Other Embodiments) In the embodiment described above, the cutting device 2 for cutting the tatami floor 7 is used.
Was set on the side of the sewing device 3. However, by installing this on the side opposite to the sewing device 3, the fixing table can be omitted, but in this case, the turntable 65 is used as a work table, and The work of peeling off becomes difficult.

In the embodiment described above, a series of operations of each device is controlled by operating the push button switch S1 and the foot switch S2. However, a switch is provided for each device and controlled. Is also good.

The vehicle travels on a base rail between the movable gantry 61 and the cutting device 2, and the height of the upper surface thereof is adjusted to the table 2 of the cutting device.
A free roller 84 is provided so as to have the same height as 2,
When the movable gantry 61 and the base portion below the cutting device 2 are connected by a link mechanism 85 or the like that entangles with a pantograph, the free rollers 84 always turn the turntable 6 of the movable gantry 61.
The tatami mat 5 and the table 22 of the cutting device 2 serve as a tatami mat support for receiving the tatami floor 7 at substantially the center. This is useful when replacing a thin tatami floor or an old tatami that is easy to bend.
Further, such a tatami mat support is composed of a fixed mount 86 and a movable mount 6.
1 can be attached. The encoder for detecting the distance and the angle may be integrated with the drive motor, such as a servomotor.

Further, the floor tightening member 35 of the sewing device 3 may be omitted, and the floor tightening member 25 of the cutting device 2 may be used during the sewing operation.

A tatami stitching device for performing flat stab and reverse stitching proposed in Japanese Patent Application No. 6-259767 is provided in addition to the above-structured device of the present invention. By inputting the habits of both frames to a single microcomputer and controlling both devices in common with the microcomputer, integrated production of tatami mats can be performed with two devices installed side by side.

Further, since the amount of movement of the movable base 61 is detected by the encoder 80, the movement of the tatami floor at the time of sewing the frame is not performed by the operator's hand as described above. In addition, the moving stand 61, that is, the turntable 6
5 can be moved to the sewing machine 31 while being placed on the tatami floor 7. By doing so, the work of the operator can be reduced, and the operation of the device can be further automated.

[0041]

As is clear from the description based on the above embodiment, according to the apparatus of the present invention for cutting a frame of a tatami floor and sewing a tatami table, a single apparatus can cut and cut a tatami floor. Each step of upholstering and stitching can be performed without the operator moving heavy tatami mats, and labor can be saved. In addition, by providing the cutting device 2 on the sewing device 3 side, the turntable 65 of the fixed stand 86 and the movable stand 61 can be used as a work table. The device as a whole is small in size and has a small installation area.

[Brief description of the drawings]

FIG. 1 is a plan view of an apparatus for cutting a frame on a tatami floor and sewing a tatami mat according to the present invention;

FIG. 2 is a front view of the apparatus shown in FIG.

FIG. 3 is a sectional view of a part D in the apparatus of FIG. 2;

FIG. 4 is a side view of the tatami surface winding device in the device of FIG. 1;

FIG. 5 is a side view of the tatami surface chuck device in the device of FIG. 1;

FIG. 6 is a plan view showing tatami floor cutting dimensions in the apparatus of FIG. 1;

FIG. 7 is a plan view showing a B-side cut dimension of the tatami floor 7 in FIG. 6;

[Explanation of symbols]

 2 Cutting device 3 Sewing device 4 Tatami table chuck device 7 Tat floor 8 Tat table 11 Rail 21 Cutting table 22 Table 23T, 23 Upper front stopper 24 Cutter 25 First floor tightening member 26 Rotation center 27 Motor 28 Screw 29 Second Encoder 31 Sewing machine 32 Table 33 Frame stopper 35 Second floor tightening member 36 Tatami table winding device 37 Support point 38 Frame 39 Elastic band 41 Frame body 42 Lower bar 43 Upper bar 44 First air cylinder 45 Link 46 Second air cylinder 47 Third air cylinder 61 Moving frame 65 Turn table 66 Holding device 80 First encoder 81 End 82 Screw 83 Drive motor 84 Free roller 85 Link mechanism 86 Fixed frame S1 Push button switch S2 Foot switch

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B150 BA16 BA17 BA19 CC01 CE23 CE25 EE02 EE07 EE12 EH01 EH03 EH09 EH15 EH18 GD14 JA13 LB02 NA31 NA34 NA38 NB12

Claims (3)

[Claims] 1. A cutting device fixed to the other end of the base on the sewing machine side or the other side, and a movable base moving on the base, the movable base is moved up and down to rotate the tatami floor by 180 degrees. A first encoder for detecting an interval between the moving gantry and the cutting device, a second encoder for detecting a cutting angle of the cutting device, and a second encoder for detecting a cutting angle of the cutting device. It has control means for controlling the position of the movable gantry and the cutting angle of the cutting device based on the data of the habit of the tatami and the output of each of the encoders. Cutter
A tatami mat chuck device for applying tension to the tatami mat, a floor tightening member for fixing the tatami mat with the tatami mat in a state where the tension is applied, and a sewing device having a sewing machine for sewing the tatami mat to a frame of the tatami mat floor are provided. A device that cuts the frame of the tatami floor and sews the tatami table. 2. The tatami mat of claim 1, further comprising a tatami mat and a cutting device, or a tatami mat receiving pedestal that moves between the movable gantry and the fixed gantry. Attaching device. 3. The tatami floor frame according to claim 1, further comprising a tatami stitching device for performing flat stab and reverse stitching, wherein both are commonly controlled by a single control means. A device for sewing tatami mats.