JP3646910B2 - Tatami sewing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tatami-stitching device that cuts the upper front or lower front of a tatami floor into a predetermined size and sews a hem cloth and a lower rim paper to the tatami floor, and in particular, during a “railing” process on the lower front side. This process automates the process of waiting the edge cloth, the paper under the edge, and the sewing thread at a position where they do not interfere with the “roughening” process.
[0002]
[Prior art]
Japanese Patent Publication No. 1-39795 proposes an apparatus for cutting and processing a margin cloth, a margin paper, and a sewing thread on a tatami floor in which a tatami mat is sewn with a butt in a tatami flatbed machine.
[0003]
When tatami is manufactured by a conventional tatami stitching device, in the flat stab process, the lining fabric and the margin paper are stabbed while cutting the tatami floor so as to obtain the size of the tatami width. However, there is a mechanical limit to the amount of cutting once each before the top and bottom, and if it is not possible to reach the finished size with each one cutting before the top and bottom, Only the width direction of the tatami floor is cut by the tatami floor cutter of the flatbed machine without performing flat sew with the lower paper. This process of cutting only the tatami floor in the width direction (upper front or lower front) is called “degradation”.
[0004]
In a conventional flat stab machine, the work to prevent the end of the sewing thread from interfering with the tatami floor during the “rabbling” process, and the work to move the margin cloth and the margin paper away from the sewing standby position are performed manually. When returning to the flat piercing process, the sewing thread, the edge cloth and the paper under the edge were manually returned to the standby position.
[0005]
[Problems to be solved by the invention]
In this way, when manufacturing a narrow tatami mat with “raised”, it has been necessary to move the edge cloth and the under-edge paper away from the sewing standby position or to return to the sewing standby position.
[0006]
Therefore, the present invention aims to automate the tatami mat manufacturing process until completion of sewing without requiring manual labor, as is the case with narrow tatami mats with `` roughing '', as with wide tatami mats without `` falling ''. It was thought.
[0007]
[Means for Solving the Problems]
The tatami stitching device according to the present invention is a tatami stitching device that cuts the tatami 6 fixed to the tatami stand 5 and stabs the edge cloth 7 and the lower margin paper 8 to the tatami 6. A flat stitch machine 1 comprising a traveling flat bar sewing machine 10 and a tatami floor cutter 2 is provided. The flat bar sewing machine 10 includes a supply means for supplying the edge cloth 7 and the lower margin paper 8 from the reels 17 and 18 to the sewing position. A border cloth / border paper holding means 15 for holding the supplied border cloth 7 and the border paper 8, and a means for stopping the flat stitch sewing machine 10 and operating only the tatami floor cutter 2 for roughing. And a means for moving the edge cloth / under-edge paper holding means 15 to a position that does not hinder the roughing during the roughing process .
[0008]
Also, in order to eliminate the slack of the edge cloth, subgingival paper occurring when returning to a position of flat Sashinui edge cloth-subgingival paper holding means 15 of this (t), the edge cloth 7 and subgingival paper Means 13 and 14 for pulling back 8 can be provided.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
As shown in the plan view of FIG. 1, the tatami sewing apparatus of the present invention has a tatami mat 5 for fixing a tatami mat 6 in which a tatami mat is previously sewn with a buttock, and a rail 51 installed in parallel to the tatami mat stand 5. And a flat-blade machine 1 that travels along.
[0010]
As shown in FIG. 2, the flat needle machine 1 includes a flat needle sewing machine 10 having a straight advance needle 11 that sews the front or lower front of the tatami 6 together with the edge cloth 7 and the lower edge paper 8, The tatami cutter 2 that cuts the front or lower front, the edge cloth supply reel 17 that supplies the edge cloth 7, the edge paper supply reel 18 that supplies the edge paper 8, and the edge cloth 7 and the edge paper 8 are provided. An edge cloth / under-edge paper clamp 15 that is temporarily held and sandwiched, and an edge cloth / under-edge paper cutter 16 that cuts the edge cloth 7 and the under-edge paper 8 are provided.
[0011]
The flat stitch sewing machine 10 and the tatami cutter 2 can move in the direction perpendicular to the paper surface. When the flat stitch machine 1 runs and performs flat stitch sewing and cutting, the flat stitch sewing machine 10 is in the flat stitch position. The tatami cutter 2 moves to the cutting position of the tatami 6.
[0012]
Then, when performing the habit removal on the lower front side of the tatami 6, the flat sewing machine 10 and the tatami cutter 2 are moved in a direction perpendicular to the paper surface, and flat knitting and cutting are performed while removing the habit.
[0013]
An edge cloth / edge paper clamp 15 for holding the edge cloth 7 and the edge paper 8 arranged side by side in the horizontal direction and an edge cloth / edge paper cutter 16 for cutting the edge cloth 7 and the edge paper 8 are The edge cloth / under-edge paper clamp 15 has a configuration disclosed in Japanese Patent Laid-Open No. 1-39795, and the edge cloth 7 and the under-edge paper 8 are provided between two holding pieces that open and close like a hook provided at the tip. And the edge cloth / border paper cutter 16 cuts the overlapped edge cloth 7 and the paper under edge 8. Opening and closing of the edge cloth / under edge paper clamp 15 composed of two holding pieces is performed by a piston 19.
[0014]
When the upper front side is flat stitched and the tatami is turned 180 ° to move to the lower front side flat stitch, if the lower front side cannot be cut to the finished dimensions with a single cut, only the tatami cutter 2 is operated. It is necessary to perform “devastation”.
[0015]
During this “roughening” process, as shown by the phantom line in FIG. 3A, the edge cloth 7 and the under edge paper clamp 15 and the edge cloth / edge The lower paper cutter 16 is raised so as to stand by at a position that does not hinder the “roughing”.
[0016]
In the course of supplying the edge cloth 7 and the under edge paper 8 from the edge cloth supply reel 17 and the under edge paper supply reel 18 to the edge cloth / under edge paper clamp 15 and the edge cloth / under edge paper cutter 16, an air cylinder 13 is provided. A tension bar member or a tension roller 14 that is rotated by the rotation of the tension bar member 14 is provided.
[0017]
When the “roughing” process is finished and the process proceeds to the lower front flat stitching, as shown in FIG. 3A, the edge cloth / under edge paper clamp 15 and the edge cloth / under edge paper cutter 16 are moved. When the sewing machine 10 is lowered from the position indicated by the phantom line to the position indicated by the solid line, the edge cloth 7 and the lower edge paper 8 are loosened (t) at the sewing work position of the sewing machine 10, as shown in FIG. Then, the air cylinder 13 is actuated to rotate the tension bar member or the tension roller 14, and the edge cloth 7 and the under edge paper 8 are pulled back to eliminate the slack (t).
[0018]
Then, flat stitching is performed by the flat sewing machine 10 while the lower front side is cut to a predetermined size by the tatami cutter 2.
[0019]
On the other hand, when sewing by chain stitching with the flat stitch sewing machine 10, if the end of the sewing thread 9 is not fixed at the start of sewing, the sewing thread 9 will loosen and cannot be sewn. A sewing thread holding device 3 for temporarily fixing the end of 9 is provided. It should be noted that when the sewing is performed by the main sewing, it is not necessary to fix the end of the sewing thread 9.
[0020]
As shown in FIGS. 2 and 4, the sewing thread holding device 3 includes a first air cylinder 31 having a sewing thread holding portion 33 for holding the sewing thread 9 attached to the tip of the piston, and the first air cylinder. The second air cylinder 32 is configured to rotate 31 in a direction perpendicular to the paper surface.
[0021]
The operation of holding and cutting the sewing thread 9 by the sewing thread holding device 3 is as shown in FIG.
(1) When flat stitching is completed, the sewing thread 9 is connected from the thread reel to the end of the tatami 6 together with the edge cloth 7 and the under edge paper 8, and the sewing thread 9 is connected to the edge cloth 7 and the lower edge paper. It is held together with the paper 8 by a border / under-edge paper clamp 15.
[0022]
(2) Open the edge cloth / under edge paper cutter 16,
(3) Operate the first air cylinder 31 to project the piston, move the sewing thread holding portion 33 to the side of the sewing thread 9,
(4) By operating the second air cylinder 32, the first air cylinder 31 is rotated and the sewing thread 9 is gripped by the sewing thread holding portion 33.
[0023]
(5) The first air cylinder 31 is deactivated, and the piston is moved backward while the sewing thread holding portion 33 holds the sewing thread 9,
(6) The edge cloth / border paper cutter 16 is closed and the sewing thread 9 is cut between the edge cloth / border paper clamp 15 and the sewing thread holding portion 33.
[0024]
Through the series of steps described above, the end of the sewing thread 9 while the flat needle sewing machine 10 is at rest is processed.
[0025]
Next, by using the tatami stitching device of the present invention, the lower front side of the tatami 6 is “rashed” from the upper front side of the tatami 6, and the edge cloth 7 and the lower margin paper 8 are sewn. The process until is completed will be described.
[0026]
In the sewing process on the upper front side of the tatami mat, after the tatami 6 that has been sewed is placed and fixed on the tatami table 5, when the flatbed machine 1 is operated, the flatbed machine 1 runs along the rail 51, The upper and front sides of the tatami 6 are linearly sewed with the edge cloth 7 and the lower margin paper 8, and at the same time, the upper and lower sides of the tatami 6 are cut into a straight line by the tatami cutter 2.
[0027]
When flat stitching is completed, the sewing thread 9, the edge cloth 7 and the under edge paper 8 connected to the end of the tatami 6 are clamped with the edge cloth / under edge paper clamp 15 closed, and then the edge cloth / edge Cut by the lower paper cutter 16.
[0028]
Next, the cutting and sewing process on the lower front side of the tatami will be described.
[0029]
Place the tatami 6 with the upper front side on the tatami table 5 and fix it. At this time, the tatami is turned 180 degrees and fixed so that the lower front side faces the flat-blade machine side.
[0030]
When processing a wide tatami mat with a small cutting amount on the lower front side, only one cutting is required, so the processing is performed through the same process as the flat stitching on the upper front side.
[0031]
When processing a narrow tatami mat with a large amount of cutting on the lower front side, as shown by phantom lines in FIG. 3, an edge cloth / under edge paper sandwiching the sewing thread 9, the edge cloth 7 and the under edge paper 8. The clamp 15 and the edge cloth / under edge paper cutter 16 are raised. The sewing thread 9 held by the edge cloth / underedge paper clamp 15 is held by the sewing thread holding portion 33 and then cut by the edge cloth / underedge paper cutter 16 so that the flat stitch sewing machine 10 is not operated. Then, only “Tatami Cutter 2” is operated to perform “Roughing” in which the lower front of the Tatami 6 is cut. This “roughing” step is performed a plurality of times when the cutting amount is large.
[0032]
When the “roughing” step is completed, the edge cloth / under edge paper clamp 15 and the edge cloth / under edge paper cutter 16 sandwiching the edge cloth 7 and the under edge paper 8 are lowered. At this time, the tension rod member or tension roller 14 is rotated by the air cylinder 13 to pull back the edge cloth 7 and the lower edge paper 8 to eliminate the slack (t), and then the lower front side is cut into a predetermined dimension. The flat stitch machine 10 is used to perform flat stitch stitching.
[0033]
In this way, when the lower front flat stitch is completed, the sewing thread 9, the edge cloth 7 and the under edge paper 8 connected to the end of the tatami 6 are closed and the edge cloth / under edge paper clamp 15 is closed and clamped. Then, the paper is cut by the edge cloth / under edge paper cutter 16.
[0034]
(Other embodiments)
The sewing thread holding device described in the above embodiment drives the sewing thread holding part 33 by the linear movement of the two air cylinders 31 and 32. However, the sewing thread holding part 33 can be configured as shown in FIG. it can. That is, a rotation arm 37 having a bar member 34 for hooking the sewing thread 9 is provided, and this rotation arm 37 is rotated by the third air cylinder 35 from the position indicated by the phantom line to the position of the stopper 38 indicated by the solid line. The fourth air cylinder 36 is configured to move the rotation arm 37 in the direction of the rotation axis, and a blade edge 39 is formed on the stopper 38.
[0035]
When flat stitching is finished, the rotation arm 37 is rotated by the third air cylinder 35, and the sewing thread 9 indicated by the dotted line connected to the end of the tatami is hooked by the bar member 34, as indicated by the solid line. It can be guided and held by the stopper 38. When the sewing thread 9 is held, the sewing thread 9 may be cut by the cutting edge 39 formed on the stopper 38. Reference numeral 40 denotes a needle holder having a hole through which the straight needle 11 of the sewing machine passes.
[0036]
Moreover, in the sewing thread holding device described in the above embodiment, the rim cloth supply reel 17 and the under edge paper supply reel 18 are installed in the flat stab machine 1 and are moved together with the flat puncture machine 1. The flat stitch machine 1 is provided with an edge cloth / under edge paper clamp 15 for holding the edge cloth 7 and the under edge paper 8 so that the edge cloth supply reel 17 and the under edge paper supply reel 18 are tatami mats. It may be fixed to the end of 5.
[0037]
【The invention's effect】
As is clear from the description based on the above embodiment, according to the tatami stitching device of the present invention, even in a narrow tatami mat accompanied by “roughing”, similarly to a wide tatami mat without “railing”, The tatami manufacturing process up to the completion of cutting and flat stitching can be automated without manpower.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a tatami-stitching device according to the present invention;
FIG. 2 is a front view of a flat stab machine in the tatami mating device of the present invention;
FIG. 3 is a front view showing a main part of the flat needle machine shown in FIG.
FIG. 4 is a side view (a), a front view (b), a plan view (c), showing a state in which the end of the sewing thread is processed by the sewing thread holding device in the order of steps;
FIG. 5 is a perspective view showing another embodiment of the sewing thread holding device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Flat stitch machine 2 Tatami cutter 3 Sewing thread holding device 5 Tatami bed 6 Tatami 7 Edge cloth 8 Paper under edge 9 Sewing thread
10 Flat stitch sewing machine
11 Straight needle
13 Air cylinder
14 Tension roller
15 Edge cloth / under edge paper clamp
16 Edge cloth / under edge paper cutter
17 Reel supply reel
18 Under-edge paper supply reel
33 Sewing thread holder
51 rails

Claims (2)

In a tatami stitching apparatus for cutting a tatami mat fixed to a tatami table and flat stitching a hem and a margin paper on the tatami mat, a flat knitting machine comprising a flat knitting machine and a tatami floor cutter running along the tatami mat With
The flat stitch sewing machine includes a supply means for supplying a margin cloth and a margin paper to a sewing position from a reel, a margin cloth / under margin paper holding means for holding the supplied margin cloth and the margin paper, and the flat stitch. Means for stopping the sewing machine and operating only the tatami floor cutter to perform rough fall, and means for moving the edge cloth / under edge paper holding means to a position that does not interfere with the fall during the rough fall process. A tatami stitching device characterized by that. In order to eliminate the slack of the edge cloth / border paper generated when the edge cloth / border paper holding means is returned to the flat stitching position, a means for pulling back the edge cloth / border paper is provided. The tatami stitching device according to claim 1, wherein:

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