JP3496809B2 - Tatami flat stitch 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 flat tattoo sewing device for tatami mats, and more particularly to a tatami mat sewn device which can be easily changed and adjusted when the width of the tatami mat is changed. .

[0002]

2. Description of the Related Art As shown in the side view of FIG. 1, a flat stitch sewing machine is provided with a flat stitch sewing machine 1 having a straight needle 11 and a cutting blade 2 composed of a tatami floor cutting blade and a tatami mat cutting blade. The flat stitch sewing operation and the cutting operation are simultaneously performed.

This flat stitch sewing machine is provided with a habit removing motor 12 for removing the peculiarity of the tatami mat, and the habit removing motor 12 is driven to move the flat stitch sewing machine in a direction orthogonal to the sewing direction. Is configured to get.

In such a flat stitch sewing machine, the position of the straight advance needle 11 for performing flat stitch sewing is fixed to the flat stitch position, and the cutting position of the cutting blade 2 can be adjusted. So, when changing the edge width of the tatami to be made,
The edge width is changed by moving the cutting blade 2 with the position of the straight advance needle 11 of the flat prick sewing machine fixed to change the distance between the needle position and the cut edge of the tatami floor.

[0005]

When the cutting blade 2 is moved in this manner, the cutting position of the tatami floor or the tatami mat is changed by this amount of movement, and the finished size of the tatami mat is changed. In addition, it is necessary to adjust the origin sensor that determines the origin position of the flat stitch sewing machine 1 in the opposite direction by the amount of movement of the cutting blade 2 to maintain the original cutting position.

Of the two operations of moving and adjusting the cutting blade 2 and moving and adjusting the origin sensor in the opposite direction,
If either one of them is not adjusted properly, an error will occur in the finished dimension, and this is a very laborious and labor-intensive work.

[0007]

The tatami flat stitch sewing machine of the present invention comprises a flat stitch sewing machine 1 having a straight advance needle 11 and a cutting blade 2.
A flat stitch sewing machine device, a cutting blade moving means 24 such as a stepping motor for moving the cutting blade 2 relative to the rectilinear needle 11, and the flat stitch sewing machine device to remove the tatami mat. Dust removal means such as habit removal motor 12
And an edge width changing means for changing the edge width dimension of the tatami edge by moving the cutting blade 2 and the flat stitch sewing machine device in opposite directions with substantially the same movement amount.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION
As shown in the side view of FIG. 1, a flat stitch sewing machine 1 having a straight advance needle 11, a cutting blade 2 composed of a tatami floor cutting blade 21 and a tatami mat cutting blade 22, and the cutting blade 2 is moved via a screw rod 23. A cutting blade moving motor 24 such as a stepping motor, a cutting blade reference position sensor 3 that generates an output when the cutting blade 2 is at the reference position, and a habit removing motor 12 such as a stepping motor for removing the tatami mat. And a flatness removing reference position sensor 4 that produces an output when the flat stitch sewing machine 1 is at the reference position. Further, a control device using a microcomputer for controlling the cutting blade moving motor 24 is provided. There is.

Next, the procedure for changing the edge width in the tatami flat pricking device constructed as described above will be described.

Normally, the cutting blade 2 is at the reference position where the cutting blade reference position sensor 3 operates, and the flat prick sewing machine 1 is at the reference position where the habit removing reference position sensor 4 operates.
Standing by in the state of forming the edge width of the standard dimension S (Fig. 2
a)).

When an edge width T different from the standard dimension S is set in the control device, the control device drives the cutting blade moving motor 24 to correspond to the difference (S to T) from the standard edge width S. The cutting blade 2 is moved to the position (see FIG. 2b).

Further, the control device drives the habit removing motor 12 provided in the flat stitch sewing machine 1 to make a difference (S to T) for the entire flat stitch sewing machine 1 in the direction opposite to the moving direction of the cutting blade 2. To a position corresponding to (see FIG. 2c).

In this way, the distance (edge width T) between the straight advance needle 11 and the tatami edge 9 can be set.

The drive amount of the cutting blade moving motor 24 and the drive amount of the habit removing motor 12 corresponding to the edge width T to be set are automatically calculated by incorporating them in the control software of the control device in advance. It can be driven to move a distance.

When performing flat pricking on the lower front side of the tatami while removing the peculiarity, it is sufficient to perform the pricking on the lower front side with the position moved for changing the edge width as a reference for the peculiarity.

[0016]

As is apparent from the description based on the above-described embodiments, according to the flat tattoo sewing apparatus for tatami of the present invention, the change of the edge width is extremely simple, and the error can be surely made.
The adjustment time required for changing the edge width can be significantly reduced.

[Brief description of drawings]

1 is a side view showing a tatami flat stitch sewing device;

FIG. 2 is a plan view used to explain a procedure of changing the edge width of the tatami by the device shown in FIG.

[Explanation of symbols]

1 flat stitch sewing machine 2 cutting blade 3 Cutting blade reference sensor 4 habit removal reference sensor 11 Straight needle 12 Peculiar motor 21 tatami floor cutting blade 22 tatami mat cutting blade 23 screw rod 24 Cutting blade moving motor

─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-61-238287 (JP, A) JP-A-6-322940 (JP, A) JP-A-9-294886 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) D05B 23/00 E04F 15/02 B26D 1/00-1/24

Claims (2)

(57) [Claims] 1. A flat stitch sewing machine having a flat stitch sewing machine having a straight advancing needle and a cutting blade, a cutting blade moving means for relatively moving the cutting blade with respect to the straight advance needle, and the flat stitch sewing machine. Habit removing means for moving the tatami mat to remove the habit, and edge width changing means for changing the edge width dimension of the tatami edge by moving the cutting blade and the flat stitch sewing machine device in opposite directions with substantially the same movement amount. A flat tattoo sewing device for tatami mats, comprising: 2. A cutting blade reference position sensor for detecting the reference position of the cutting blade and a habit removing reference position sensor for detecting the reference position of the flat stitch sewing machine, wherein the cutting blade and the habit removing means are present at each reference position. 2. The flat prick stitching device for a tatami according to claim 1, wherein the flat edge stitching device corresponds to a standard edge width dimension in a state.