JP2535491B2 - Tatami habit removing sewing method and tatami sewing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tatami mat sewn method and a tatami machine.

[0002]

2. Description of the Related Art A sewing machine table is provided so as to be movable along a tatami mat, and a sewing machine main body having a cutting blade, a sewing needle and the like is provided so as to be movable in a direction orthogonal to the tatami mat with respect to the sewing machine table, and preset. According to the peculiar dimension, the sewing machine body is driven in the direction orthogonal to the tatami mat as the sewing machine runs.
In the tatami stitching machine that cuts and sewes the tatami floor fixed to the tatami mat to the set dimensions as the sewing machine body travels by the numerical control method, even if distortion occurs in the sewing machine body, traveling rail, tatami mat, etc., A tatami stitching machine that corrects this and cuts and stitches according to a set dimension is proposed by the applicant of the present application in, for example, Japanese Patent Publication No. 62-38973, and is widely used in the industry.

[0003]

However, in the technique disclosed in the above publication, the upper front side is cut and sewn (so-called flat stab).
Then, when cutting and sewing the lower front side (so-called flat stab), change the direction of the tatami floor manually and lower the front reference line.
Since the lower front side was manually matched with the (lower front cutting position), there was a problem in terms of labor saving.

In the case of so-called reverse stitching, since the lower front side of the flat stitch is finished, the positioning can be done by a stopper, but in the flat stitch, the lower front side is cut and sewn. Since it is not possible to perform positioning by the stopper, it is necessary to perform manual positioning and the like. Therefore, an object of the present invention is to save labor by automating the direction change and positioning of the tatami floor even when the upper front side is cut and sewn and then the lower front side is peculiarly cut and sewn. To do.

[0005]

In the present invention according to claim 1, a tatami floor 5 fastened on a tatami mat 4 by using a tatami stitching machine 10 which automatically makes a habit-removing motion by numerical control. The following technical measures are taken in order to achieve the above-mentioned object in the method of sewing off the lower front side. That is, in the present invention according to claim 1, the tatami floor 5 having the upper front side cut and sewn is turned around, and the lower front side thereof is placed on the tatami mat 4 with the tatami stitching machine 10 and then the tatami mat 4 is placed. When a pressing force is applied to the upper front side of the floor 5 to move the lower front side toward the tatami sewing machine 10 , a check is performed to calculate the position of the lower front reference line L of the lower front side.
After confirming with out sensor 53, the movement from the anterior reference line L
The separation distance X ₀ in the tatami-width direction on the lower front side of the tatami mat 5 which has been set is calculated, and the tatami mat 5 is pressed so that the calculated value is obtained. After that, the tatami mat 5 is tightened and then automatically controlled by numerical control. It is characterized by being sewn on.

Further, in the present invention according to claim 2, a tatami stitching machine 10 which automatically makes a habit removing motion by numerical control,
A straight line reference ruler 2 which is arranged on the side of the tatami sewing machine 10
0 and the tatami mat 4 having the tatami mat tightening means 6, the following technical measures are taken to achieve the above-mentioned object. That is, in the present invention according to claim 2, the tatami mat 4 is provided with the direction changing means 32 for changing the direction of the tatami mat 5 having the upper front side cut and sewn, and the tatami mat 5 by pressing the upper front side of the tatami mat 5. And a tatami floor pushing means 41 for pushing the lower front side toward the tatami sewing machine 10, and a lower front base of the lower front side of the tatami floor 5 pushed by the tatami floor pushing means 41.
Detection sensor 53 to confirm to calculate the position of the line L
That it comprises a and is characterized in.

[0007]

[Function] With the tatami floor 5 having the upper front side cut and sewn, the lower front side (the side for habit removing, cutting and sewing) is directed to the tatami sewing machine 10 by the direction changing means 32 provided in the tatami stand 4. After the direction is changed, the upper front side is pressed by the tatami floor pushing means 41 so that the lower front side is the lower front reference line L (lower front cutting position).
Is aligned with.

At this time, the position of the lower front reference line L is calculated.
After confirming by the detection sensor 53 for, contact under the front side of which is pressed from the front lower reference line L (moved) Tatamiyuka 5
The Tatamiyuka 5 to the release distance X ₀ tatami width direction kicking calculated becomes the calculated value pressed by Tatamiyuka pushing means 41. Then, after the tatami mat 5 is fixed to the tatami mat 4 by the tatami mat tightening means 6, the sewing machine main body 12 is numerically controlled to make a habit-removing motion to cut and sew the lower front side.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1 showing the overall structure in plan view and FIG. 2 showing in elevation, reference numeral 1 denotes a pair of longitudinal frames, and rails 2 and 3 are provided between the frames 1 in the longitudinal direction.

A tatami mat 4 is provided with a tightening means 6 which is provided between the pair of frames 1 and includes a tightening bar 6A for tightening and fixing the tatami floor 5 from the upper side. The tatami floor 5 placed on the tatami mat 4 can be tightened and released by sliding vertically along the vertical axis 6B via the 1 cylinder 7, the relay lever 8, the interlocking rod 9, and the like.

Reference numeral 10 denotes a tatami sewing machine, which is mainly composed of a sewing machine base 11 and a sewing machine main body 12. The sewing machine base 11 has rails 2, 3
It can reciprocate along the longitudinal direction of the tatami mat 4, and as the reciprocating means, chain transmission means, rack and pinion means, etc. can be adopted. The sewing machine main body 12 is capable of traveling back and forth together with the sewing machine base 11, and is provided so as to be capable of reciprocating in the width direction of the tatami mat base 4 on the sewing machine base 11, and is linked by turning the manual handle 13 and driving the motor 14. Axis 15,1
6 rotates around the axis via the bevel gear 17, and the sewing machine main body 12 is tatami matted against the sewing machine base 11 in proportion to the rotation of the interlocking shaft 16.
The movement is adjustable in the width direction of 4.

The sewing machine main body 12 is provided with a helicopter paper, a sewing needle 18 for flatly sticking a helicopter cloth, and a cutting blade 19 for cutting the tatami floor after sewing on the front and bottom of the tatami floor 5. . Reference numeral 20 denotes a linear reference ruler provided along the longitudinal direction of the tatami mat 4, and both ends in the longitudinal direction are connected and fixed to the tatami mat 4 via brackets 21. 22 is a scale member, which is a cutting blade of the sewing machine main body 12.
A bearing 23 is provided near 19 and slides along the longitudinal direction of the linear reference ruler 20 to follow.

Reference numeral 24 denotes a first position detecting means, which is composed of an encoder or the like, and detects the relative position of the scale member 22 and the sewing machine main body 12 in the direction orthogonal to the tatami mat 4. The detecting means 24 may be composed of a linear magnetic scale provided on the scale member and a magnetic sensor provided on the sewing machine main body, as disclosed in Japanese Patent Publication No. 62-38973.

Reference numeral 25 is a second position detecting means, which is the main body of the sewing machine.
The position of twelve tatami mats in the longitudinal direction is detected, and includes a rotating magnetic scale 27 provided on the rotating shaft 26 and a magnetic sensor 28 arranged in proximity to the rotating magnetic scale 27.
Detects the rotation position of (travel axis) 26. A control device 29 includes a microcomputer 30 and a motor drive circuit 31 that drives the motor 14, and the control device 29 performs the following operation.

In the case of flat stab, the size of the tatami obtained by measuring the floor plan is to be cut and sewn, that is, a plurality of reference points A in the longitudinal direction of the tatami (hereinafter referred to as the Y-axis direction), as shown in FIG. B, C,
The tatami width direction with respect to the lower front reference line L in D and E (hereinafter X
When the separation distances X ₀ , X _1, X _2, X _3, X _{4, (} in the axial direction) are input by the key operation of the key switch, the microcomputer 30 determines (at each step) based on the set dimensions. Y
Set the target value for the X-axis to the axis reference 10 of the ruler 20.
The conversion is calculated so that a becomes the reference. And the cutting blade 19
Is moved to the cutting start position and the sewing machine base 11 is moved in the Y-axis direction by the rotation of the manual handle 13 or the drive of a motor (not shown) connected to the rotation shaft 26, the microcomputer 30 causes the second position detection means to move. The detection signal from 25 is input to numerically calculate the current position in the Y-axis direction based on the cutting start position, and the target position in the X-axis direction (set position) with respect to the current position in the Y-axis direction. Is calculated based on the cutting start position. At the same time, the microcomputer 30 receives the detection signal from the first position detecting means 24,
The current position of the sewing machine main body 12 in the X-axis direction is counted with reference to the dimension reference plane 20a of the ruler 20. Then, the microcomputer 30 controls the motor drive circuit 31 so that there is no difference between the current position in the X-axis direction and the target position in the X-axis direction obtained by the detection signal of the first position detecting means 24, and the motor drive circuit 31 is controlled. The sewing machine main body 12 is moved to a target position by driving.

Reference numeral 32 denotes a direction changing means, which is used to stab the upper front side of the tatami floor 5 as shown in FIGS. 2 to 4 and then to stab the lower front side (habit removing side) of the tatami floor 5. The tatami floor piercing member 34, which is turned on the platform 4 and swings from the F position to the G position in FIG.
In addition to the above, the pinion 38 is provided on the revolving shaft 37 of the elevating table 36 that is moved up and down by the operation of the telescopic third cylinder 35, and the telescopic fourth cylinder 40 that operates the rack 39 that meshes with the pinion 38 is provided.

Therefore, after the upper front side is cut and sewn, the fastening means 7 is released, and then the tatami mat piercing member 34 is operated from the F position to the G position so that the tatami mat 5 is once separated from the sewing machine main body 12 and the sewing machine main body is released. 12 is retracted, and the tatami floor 5 is once lifted from the tatami mat 4, and then the elevating table 36 is raised to hold the tatami floor 5 with the puncture needle (reference numeral omitted) on the elevating table 36 and the fourth step is performed.
By operating the cylinder 40, the tatami floor 5 can be turned by 180 ° via the pinion racks 38 and 39, and after the turning, the lift 36 is lowered to put the tatami floor 5 on the tatami stand 4 and the lower front side. Is placed toward the tatami sewing machine 10.

Reference numeral 41 is a tatami floor pushing means, which pushes the upper front side of the tatami floor 5 placed on the tatami mat 4 with the lower front side facing the tatami sewing machine 10 in the direction of arrow H in FIG. 2 to 4
As shown in FIG. A forward / reverse drive motor 42 is provided near the center of the tatami mat 4 in the longitudinal direction.
An interlocking shaft 44 having pinions 44A at both ends is provided along the longitudinal direction of the tatami mat on the output shaft of the interlocking gear 43.

The pinion 44A is provided on both sides in the longitudinal direction of the tatami mat.
There is a pair of racks 45 that mesh with
45 is fixed to a pair of carriages 46. Therefore, the platform
The 46 can be reciprocally moved in the width direction of the tatami mat 4 via the rack and pinion 44A, 45 by the activation of the drive motor 42, and this travel is made smooth by the guide rail 47 and the like.

Each of the carriages 46 has a pair of upper and lower links 4.
A lower front ruler, that is, a pressing bar 50 is provided via 8,49, and the pressing bar 50 is arranged along the longitudinal direction of the tatami mat 4 and is located on the opposite side of the tatami sewing machine 10. There is. The pressing bar 50 can swing up and down about a support shaft 51 as a fulcrum in a posture facing the upper front side of the tatami floor 5 on the tatami mat 4 and a posture in which the pressing bar 50 descends from the upper front side. Has been.

Therefore, when the tatami floor 5 having the upper front side cut and sewn is turned by the direction changing means 32 and placed on the tatami mat 4, the pressing bar 50 is tatami mated by the operation of the fifth telescopic cylinder 52. It is made to face the upper front side of the floor 5, and then the motor 42 of the tatami floor pushing means 41 is activated to move the lower front side of the tatami floor 5 toward the sewing machine body 12 by the pressing bar 50. At this time, the position of the lower front reference line L on the lower front side
In order to make a calculation, a detection sensor 53 such as a proximity switch is used for confirmation, and the lower front side of the tatami floor 5 moved from the lower front reference line L
The release distance X ₀ of definitive width direction was calculated, and the alignment by moving the pressing bar 50 to the arrow shown direction H so that becomes the calculated value, then the tatami floor 5 by fastening means 7 to Tatamidai 4 Fixed, numerical control, tatami floor 5 by tatami sewing machine 10
The lower front side is run along the tatami mat 4 in order to remove the habit and cut and sew it.

After the tatami floor 5 is aligned, the pressing bar 50 is lowered and restored to the old position for the next preparation. However, if the bar 50 is lowered, a working space can be secured, which is not advantageous. Although there is no requirement. Also, pressing bar 50
Other than the rack and pinion, the reciprocating movement may be, for example, a winding type.

[0023]

As described above in detail, according to the present invention, the lower front cutting sewing is performed while the upper front of the tatami floor is cut and sewn and the habit removal cutting sewing of the lower front is automated by numerical control. This is advantageous in that it can contribute to labor saving by automating the direction change and positioning when shifting to.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing the overall configuration of the present invention.

FIG. 2 is a schematic elevational view showing the overall configuration of the present invention.

FIG. 3 is a partially omitted plan view of a tatami mat portion.

FIG. 4 is a partially omitted front view of a tatami mat base.

FIG. 5 is an explanatory diagram for explaining the operation.

[Explanation of symbols]

 4 tatami mat 5 tatami mat 10 tatami sewing machine 20 straight-line reference ruler 32 direction changing means 41 tatami mat pushing means 53 detection sensor

Claims (2)

(57) [Claims] 1. A tattoo sewing machine (10) that automatically makes a habit-removing motion by numerical control is used to habit-seed the lower front side of a tatami floor (5) which is fastened on a tatami mat (4). In the wearing method, the tatami floor (5) having the upper front side cut and sewn is turned around and the lower front side is placed on the tatami mat (4) with the lower front side facing the tatami stitching machine (10). When a pressing force is applied to the upper front side of the floor (5) to move the lower front side toward the tatami sewing machine (10) , detection is performed to calculate the position of the lower front reference line (L) of the lower front side. Sensor
After confirming by over 53, it is moved from the front lower reference line (L)
The separation distance (X ₀ ) in the tatami-width direction on the lower front side of the tatami mat (5) is calculated, and the tatami mat (5) is pressed so that the calculated value is obtained, and then the tatami mat (5) is tightened. A tatami habit-removing and sewing method characterized by automatically performing habit-removing and sewing by numerical control. 2. A tatami stitching machine (10) which automatically makes a habit-removing motion by numerical control, and a linear reference ruler (20) and a tatami floor arranged on the side of the tatami stitching machine (10). A tatami mat (4) having a tightening means (6), and a direction changing means (32) for changing the direction of the tatami floor (5) whose upper front side is cut and sewn to the tatami mat (4). ) And the upper front side of the tatami floor (5) to press the lower front side of the tatami floor (5) to the tatami sewing machine (10).
And a position of a lower front reference line (L) on the lower front side of the tatami floor (5) pressed by the tatami floor pushing means (41). Calculate
A tatami sewing machine characterized by being provided with a detection sensor (53) for confirming that.