JP2016123781A - Sewing needle guide mechanism of tatami sewing apparatus and tatami sewing apparatus including sewing needle guide mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sewing needle guide mechanism of a tatami sewing apparatus for sewing a tatami edge on the side of a tatami which can reliably guide a sewing needle through a needle guide hole of a needle guide plate member, and which is excellent in straightness and is free from the possibility of bending and breaking of the sewing needle even when the thickness of the tatami is large.SOLUTION: There is provided a sewing needle guide mechanism 120 of a tatami sewing apparatus 10 for sewing a tatami edge 106 on a side 110 of a tatami 100. The sewing needle guide mechanism 120 includes a needle guide plate member 122 for guiding a sewing needle 112. The needle guide plate member 122 includes a needle guide hole 126 for inserting the sewing needle 112 therethrough and a sewing thread guide groove 140 which is formed on the outer periphery of the needle guide hole 126, and through which a sewing thread 114 is inserted.SELECTED DRAWING: Figure 6

Description

  TECHNICAL FIELD The present invention relates to a tatami stitching device for sewing tatami edges, and in particular, performs flat sew on the side of a tatami mat, and sews tatami edges and under-edge paper on the surface side of the tatami mat, or reverse stitches. The present invention relates to a sewing needle guide mechanism of a tatami stitching device for sewing a tatami edge to a side of the tatami mat and a tatami stitching device provided with the sewing needle guide mechanism.

  Conventionally, in the manufacturing process of a tatami mat, a process of sewing a tatami edge to the side (long side) of the tatami has been performed.

  That is, as shown in FIG. 10, a tatami mat is sewed on the tatami floor 102 of the tatami mat 100 placed on the tatami floor 102 in a horizontal state, and the tatami rim 106 is overlapped with the margin paper 108 and turned upside down. It is arranged along the side (long side, that is, the upper front side and the lower front side) 110.

Then, a process of sewing with a sewing thread 114 in a straight line (flat stitching process) is performed by a sewing needle 112 of a sewing machine mechanism that is movable along the side 110 of the tatami mat.
In this flat stitching process, cutting for determining the size of the tatami mat 100 in the width direction is simultaneously performed.

  Further, the tatami edge 106 that has undergone flat stitch stitching is folded back along with the side edge 110 of the tatami mat as shown by the arrows in FIG. Then, cornering of the tatami edge 106 and the marginal paper 108 that is in a state of protruding from the tatami 100 is performed manually or by a machine (cornering process).

  Then, as shown in FIG. 11, after such a folding process, the tatami mat 100 is arranged in an inclined shape, and the sewing needle 112 of the sewing machine mechanism is placed on the inclined surface (the tatami mat) of the inclined side 100 of the tatami mat 100. The floor) 116 is moved to the penetration position A1 through which the sewing needle 112 of the sewing machine penetrates and penetrates.

  Then, the sewing needle 112 comes off from the inclined surface 116 of the side 110 of the tatami 100, the sewing needle 112 is swung, and moves to the vicinity of the lower end position 116a of the inclined surface 116 of the side 110 of the tatami 100, As shown in FIG. 11, reverse stitching is performed in a zigzag manner with the sewing thread 114 by swinging the sewing needle 112 to the standby position A2 where empty stitching is performed, as shown in FIG. 11 (backward stitching step).

  Thereby, as shown in FIG. 11, the tatami edge 106 is sewn on the side 110 of the tatami mat.

  By the way, in patent document 1 (Unexamined-Japanese-Patent No. 2002-126383), the so-called both-use sewing apparatus which can perform such a flat stitch sewing process and a reverse stitching process with a common sewing machine is disclosed. .

  That is, FIG. 12A is a front view of the conventional sewing apparatus 200 of Patent Document 1, FIG. 12B is a top view of the conventional sewing apparatus 200, and FIG. FIG. 13B is a side view showing the flat stitching process of the conventional sewing device 200. FIG. 13B is a side view showing the flat stitching process of the sewing device 200. FIG.

  For convenience of explanation, in FIGS. 12A to 13B, the sewing needle 112 of the sewing machine mechanism 206 is omitted and only a schematic configuration is shown.

  That is, the conventional sewing apparatus 200 of Patent Document 1 includes a mounting table 202 for mounting the tatami mat 100 as shown in FIGS. 12 (A) to 12 (B).

  Further, as shown in FIG. 13A, the mounting table 202 can arrange the tatami 100 in a horizontal state in a state in which the tatami 100 is fixed by the fixture 204, and is also shown in FIG. 13B. Thus, the mounting table 202 can be rotated to arrange the tatami mat 100 in an inclined manner.

  The conventional sewing device 200 includes a sewing mechanism 206 that can move along the side 110 of the tatami mat 100.

  As a result, as shown in FIG. 13 (A), the sewing needle 112 of the sewing machine mechanism 206 movable along the side 110 of the tatami 100 in a state where the tatami 100 is placed in a horizontal state is linearly formed. A process of sewing with a sewing thread and a cutting of a tatami floor (a flat sew process) can be performed.

  As shown in FIG. 13B, the sewing machine mechanism 206 can be sewn along the side 110 of the tatami mat 100 while the tatami mat 100 is tilted by rotating the mounting table 202. The needle 112 is configured so that reverse stitching (backward stitching process) can be performed.

JP 2002-126383 A

  By the way, in the conventional sewing device 200, in the reverse stitching process, the tatami 100 is arranged in an inclined shape, and the sewing needle 112 of the sewing machine mechanism is set against the inclined surface 116 of the side 110 of the inclined tatami 100. The penetrating position A1 through which the sewing needle 112 penetrates and the sewing needle 112 moves out of the inclined surface 116 of the side 110 of the tatami 100 and moves to the vicinity of the lower end position 116a of the inclined surface 116 of the side 110 of the tatami 100. The swing angle α with respect to the position A2 is fixed and fixed.

  That is, as shown in FIG. 14, for example, the cam mechanism or the like swings between the penetration position A1 of the sewing needle 112 of the sewing machine mechanism and the standby position A2, so the swing angle α is, for example, 8 °. It is in a fixed state.

  Therefore, in this case, as shown in FIG. 14A, for example, when the thickness T of the tatami mat 100 is an intermediate thickness such as 55 mm, the sewing depth D1 is an appropriate dimension that is just good. It has become.

  On the other hand, as shown in FIG. 14B, for example, when the thickness T of the tatami mat 100 is as thick as 63 mm, the sewing depth D3 becomes large, and the sewing needle 112 is The resistance received increases, and the sewing needle 112 may be bent or broken.

  In particular, when the thickness T of the tatami mat 100, which is an all-board floor formed by stacking several layers of building material boards made of wood chips, or a hard straw floor, is relatively thick, the resistance that the sewing needle 112 receives increases. As a result, the sewing needle 112 may be bent or broken.

  As shown in FIG. 14, the inclination angle β for inclining the tatami mat 100 itself is a predetermined angle since the sewing depth can be sufficiently obtained if the tatami mat 100 has a large thickness T, and is particularly illustrated. However, in the case of the thin tatami mat 100, for example, it is configured to be adjustable in two stages so that the inclination angle β can be further increased. Thereby, the tatami mat with a small thickness T has a sewing depth that is increased by changing the inclination angle.

  As shown in FIG. 15, in the conventional sewing apparatus 200, the sewing machine mechanism 206 includes a sewing needle guide mechanism 208 for guiding the sewing needle 112. The sewing needle guide mechanism 208 includes a needle guide plate member 210 for guiding the sewing needle 112, as shown in FIG.

  As shown in FIG. 16, the needle guide plate member 210 has a needle guide hole 212 through which the sewing needle 112 is inserted.

  In this case, as shown in FIG. 15, the sewing needle 112 has a through hole 112a through which the sewing thread 114 is inserted, and the sewing thread 114 formed in the axial direction from the sewing needle 112 through the through hole 112a. A guide groove 112b is formed for guiding.

  Then, the sewing thread 114 is passed through the through hole 112a of the sewing needle 112 and arranged so as to be along the guide groove 112b in the axial direction, so that the sewing needle 112 is moved in the vertical direction.

  For this reason, the sewing thread 114 must be dimensioned so as to be inserted through the needle guide hole 212 of the needle guide plate member 210 together with the sewing needle 112.

  Accordingly, as shown in FIGS. 15 and 16, the diameter d1 of the needle guide hole 212 for inserting the sewing needle 112 of the needle guide plate member 210 is, for example, 0 as compared with the diameter d2 of the sewing needle 112. The dimension is about 5 mm larger.

  Therefore, as described above, as shown in FIG. 14B, for example, when the thickness T of the tatami mat 100 is as thick as 63 mm, the sewing depth D3 becomes large. As a result, the resistance received by the sewing needle 112 increases.

  At this time, as shown in FIGS. 15 and 16, the diameter d1 of the needle guide hole 212 for inserting the sewing needle 112 of the needle guide plate member 210 is compared with the diameter d2 of the sewing needle 112. If the size is large, the sewing needle 112 is not accurately guided in the needle guide hole 212 of the needle guide plate member 210, and the straightness of the sewing needle 112 deteriorates due to swinging. There is a possibility that 112 may bend or break.

  In view of such a current situation, the present invention can reliably guide the sewing needle through the needle guide hole of the needle guide plate member, has excellent straightness, and has a large tatami mat thickness. A sewing needle guide mechanism of a tatami stitching device for sewing a tatami edge to a side of a tatami mat that is not likely to bend or break, and a tatami stitching device provided with a sewing needle guide mechanism The purpose is to provide.

The present invention has been invented in order to achieve the above-described problems and objects in the prior art.
A sewing needle guide mechanism of a tatami sewing device for sewing a tatami edge to a side of a tatami mat,
The sewing needle guide mechanism includes a needle guide plate member for guiding the sewing needle,
The needle guide plate member is
A needle guide hole for inserting the sewing needle;
A sewing thread guide groove formed on the outer periphery of the needle guide hole and through which the sewing thread is inserted;
It is characterized by providing.

  With this configuration, the needle guide plate member for guiding the sewing needle of the sewing needle guide mechanism is formed in the needle guide hole through which the sewing needle is inserted and the outer periphery of the needle guide hole, and the sewing thread is inserted therethrough. A sewing thread guide groove is provided.

  Therefore, since the sewing thread guide groove through which the sewing thread is inserted is provided, the diameter of the needle guide hole can be made substantially the same as the diameter of the sewing needle.

  Therefore, even if the sewing needle can be surely guided through the needle guide hole of the needle guide plate member, the straightness is excellent, the tatami mat is thick, and the sewing needle is resistant to the material. There is no fear that the sewing needle will bend or break.

  In addition, since the sewing thread guide groove for inserting the sewing thread is provided separately, the sewing thread can pass through the sewing thread guide groove of the needle guide plate member without resistance, and the thread breakage of the sewing thread can be prevented reliably. The tatami edges can be sewn and sewn on the sides of the tatami mats, providing excellent sewability.

  The sewing needle guide mechanism of the tatami-stitching device according to the present invention is characterized in that a plurality of the sewing thread guide grooves are formed on the outer periphery of the needle guide hole.

  With this configuration, when attaching the sewing needle to the sewing machine mechanism, it is only necessary to attach the sewing needle so that the sewing thread can be inserted in accordance with the plurality of sewing thread guide grooves. Will do.

  In the sewing needle guide mechanism of the tatami stitching device according to the present invention, the needle guide plate member is composed of a single needle guide plate.

  By constituting in this way, if the needle guide plate member is constituted by one needle guide plate, the number of parts is small and assembly is easy.

  The sewing needle guide mechanism of the tatami stitching device of the present invention is characterized in that the needle guide plate member is composed of a plurality of needle guide plates.

  Thus, the needle guide plate member may be composed of a plurality of needle guide plates. Thereby, even if the needle guide plate is worn and damaged, only a part of the needle guide plate has to be replaced, which is convenient and can reduce the cost.

  Further, the sewing needle guide mechanism of the tatami stitching device of the present invention is characterized in that the needle guide hole and the sewing thread guide groove are formed by overlapping the plurality of needle guide plates vertically. To do.

  Thus, if the needle guide hole and the sewing thread guide groove are formed by superimposing a plurality of needle guide plates on top and bottom, the thickness of the needle guide plate member is increased, and the hole of the needle guide hole is increased. The depth becomes longer.

  As a result, the sewing needle can be reliably guided through the needle guide hole of the needle guide plate member, and the material has excellent straightness, thick tatami mats, and resistance to the sewing needle. But there is no fear that the sewing needle will bend or break,

  The sewing needle guide mechanism of the tatami-stitching device of the present invention is characterized in that the needle guide hole and the sewing thread guide groove are formed by contacting the plurality of needle guide plates in the horizontal direction. And

  As described above, since the needle guide hole and the sewing thread guide groove are formed by contacting the plurality of needle guide plates in the horizontal direction, assembly and parts replacement are easy.

  Moreover, the tatami mat sewing device of the present invention is characterized by including the sewing needle guide mechanism of the tatami mat sewing device described above.

In addition, the tatami stitching device of the present invention,
The tatami stitching device arranges the tatami in a slanted shape, and performs a reverse stitch on the side of the tatami by a sewing machine mechanism that moves along the side of the tatami,
It is a tatami stitching device for sewing a tatami edge to the side of the tatami mat.

  In this way, the tatami stitching device arranges the tatami in a slanted shape and performs reverse stitching on the side of the tatami by the sewing machine mechanism that moves along the side of the tatami. The sewing needle guide mechanism of the tatami stitching device can be applied to the tatami stitching device for sewing tatami edges.

In addition, the tatami stitching device of the present invention,
The tatami stitching device performs stab stitching on the side of the tatami by a sewing mechanism that moves the tatami horizontally along the side of the tatami,
Place the tatami that has been flat-stitched in an inclined manner, and by the sewing machine mechanism, perform reverse stitching on the side of the tatami,
It is a tatami stitching device for sewing a tatami edge to the side of the tatami mat.

  By configuring in this way, it is possible to carry out the flat stitching process and the reverse stitching process by a common sewing mechanism, which is extremely convenient.

  According to the present invention, the needle guide plate member for guiding the sewing needle of the sewing needle guide mechanism is formed in the needle guide hole through which the sewing needle is inserted and the outer periphery of the needle guide hole, and the sewing thread guide through which the sewing thread is inserted. Has a groove.

  Therefore, since the sewing thread guide groove through which the sewing thread is inserted is provided, the diameter of the needle guide hole can be made substantially the same as the diameter of the sewing needle.

  Therefore, the sewing needle can be surely guided through the needle guide hole of the needle guide plate member, and the sewing needle is bent or broken even when the tatami is thick, with excellent straightness. Absent.

  In addition, since the sewing thread guide groove for inserting the sewing thread is provided separately, the sewing thread can pass through the sewing thread guide groove of the needle guide plate member without resistance, and the thread breakage of the sewing thread can be prevented reliably. The tatami edges can be sewn and sewn on the sides of the tatami mats, providing excellent sewability.

FIG. 1 is a front view of a tatami-stitching device according to the present invention. FIG. 2 is a top view of the tatami stitching apparatus of FIG. FIG. 3 is a side view of the tatami stitching apparatus of FIG. 1. FIG. 4 is a side view for explaining a flat stitch sewing process of the tatami stitching apparatus of FIG. 1. FIG. 5 is a side view for explaining a reverse stitching process of the tatami stitching apparatus of FIG. 1. FIG. 6 is a partially enlarged side view showing the sewing needle guide mechanism of the tatami stitching device of the present invention. 7A is a top view of the upper needle guide plate of the needle guide plate member of FIG. 6, FIG. 7B is a top view of the lower needle guide plate of the needle guide plate member of FIG. (C) is a top view showing a state in which the upper side needle guide plate and the lower side needle guide plate of the needle guide plate member are vertically superposed. FIG. 8 is a top view showing another embodiment of the needle guide plate member. FIG. 9 is a top view showing another embodiment of the needle guide plate member. FIG. 10 is a partially enlarged perspective view for explaining the flat stitch sewing process in the process of sewing the tatami edge to the side of the tatami (long side). FIG. 11 is a partially enlarged perspective view illustrating the reverse stitching process in the process of sewing the tatami edge to the side of the tatami (long side). 12A is a front view of the conventional sewing apparatus 200 of Patent Document 1, and FIG. 12B is a top view of the conventional sewing apparatus 200. FIG. FIG. 13A is a side view showing the flat stitching process of the conventional sewing device 200, and FIG. 13B is a side view showing the reverse stitching process of the conventional sewing device 200. FIG. 14 is a partially enlarged view for explaining the swing angle control of the tatami mat sewing device of the conventional sewing device 200. FIG. 15 is a partially enlarged side view of the sewing needle guide mechanism 208 of the conventional sewing device 200. FIG. 16 is a top view of the needle guide plate member 210 of the sewing needle guide mechanism 208 of the conventional sewing device 200.

Hereinafter, embodiments (examples) of the present invention will be described in more detail with reference to the drawings.
Example 1

  1 is a front view of the tatami stitching device of the present invention, FIG. 2 is a top view of the tatami stitching device of FIG. 1, FIG. 3 is a side view of the tatami stitching device of FIG. 1, and FIG. FIG. 5 is a side view illustrating a reverse stitching process of the tatami stitching device of FIG. 1, and FIG. 6 is a stitching of the tatami stitching device of the present invention. 7A is a partially enlarged side view showing the needle guide mechanism, FIG. 7A is a top view of the upper needle guide plate of the needle guide plate member of FIG. 6, and FIG. 7B is a lower side of the needle guide plate member of FIG. FIG. 7C is a top view showing a state in which the upper side needle guide plate and the lower side needle guide plate of the needle guide plate member are superposed vertically.

  1-7, the code | symbol 10 has shown the tatami mat sewing apparatus of this invention by the whole.

  In the tatami sewing device 10 of the present invention, the side 110 of the tatami 100 refers to the side in the longitudinal direction of the tatami 100 when the tatami 100 is for 1 tatami, and the side on the heel side for the semi-tatami A side that is perpendicular or nearly perpendicular.

  As shown in FIGS. 1 and 2, the tatami stitching device 10 of the present invention includes a gantry frame 12, and a pair of left and right support members 14 are erected on the gantry frame 12.

  As shown in FIGS. 3 to 5, a substantially rectangular sewing table 16 whose one end is pivotally supported is provided at the upper end of the support member 14.

  Further, the frame 12 extends above the sewing table 16 along the side 110 of the tatami mat 100 and is moved up and down by a driving mechanism such as a cylinder (not shown) and placed on the sewing table 16. A tatami presser 18 for clamping and fixing the tatami 100 is attached.

Further, as shown in FIGS. 1 to 5, the tatami 100 placed on the sewing table 16 is moved to the gantry frame 12 by being moved in the front-rear direction by a driving mechanism such as a cylinder (not shown). A tatami push bar 22 is provided for pressing and positioning to the side.
In this embodiment, the tatami push bar 22 is provided. However, when the operator positions the tatami 100, the tatami sewing apparatus 10 does not provide the tatami push bar 22. It is also known conventionally, and in this case, the tatami push bar 22 may not be provided.

Further, as shown in FIG. 2, the sewing table 16 is provided with a substantially rectangular opening 24, which can be moved up and down by a driving mechanism (not shown) through the opening 24, and in the horizontal direction. A rotating seat 26 is provided.
In addition, about the vertical movement of the rotation seat 26, it is good also as embodiment by employ | adopting the mechanism which a person steps on a pedal.

  Thus, the tatami mat 100 placed on the sewing table 16 is rotated so that the sides 110 on both sides of the tatami mat 100 can be positioned on the sewing machine mechanism 20 side.

  As shown in FIG. 2, the sewing machine mechanism 20 includes a tatami 100 mounted on the sewing table 16 in the left-right direction along the two guide rails 28 provided on the gantry frame 12. It is comprised so that it can move along the side 110 by the drive mechanism which is not shown in figure.

  Further, as shown in FIG. 1, the sewing machine mechanism 20 includes a sewing needle 112 that moves up and down, an edge supply reel 30 around which a tatami edge 106 is wound, and a lower edge around which a margin paper 108 is wound. A paper supply reel 32 is provided. The sewing machine mechanism 20 also includes a thickness adjusting member supply reel 34 for supplying a thickness adjusting tape having cushioning properties when the thickness of the tatami floor of the tatami mat 100 needs to be adjusted.

Further, the sewing machine mechanism 20 is provided with a tatami floor cutting blade 36 for cutting the tatami 100 tatami floor and a tatami surface cutting blade 38 for cutting the tatami 100 tatami mat.
3 to 5, the sewing machine mechanism 20 can be moved forward and backward with respect to the tatami 100 by the sewing machine slide mechanism 68 (in the direction in which the tatami 100 is separated from the tatami 100, that is, in FIGS. 3 to 5). It is provided so as to be movable in the left-right direction.
Accordingly, the tatami mat can be removed by cutting with the tatami floor cutting blade 36 simultaneously with the sewing of the tatami edge 106.

  On the other hand, as shown in FIG. 3, the gantry frame 12 is provided with a motor 40, and is supported by a pivot shaft 46 at the front end of the sewing table 16 via a motor pulley 42 and a link mechanism 44. Yes.

As a result, the sewing table 16 together with the tatami presser foot 18 has a horizontal position shown by a solid line in FIG. 3 (a flat stitch position, see FIG. 4) and an inclined position shown by a dotted line in FIG. 5)).
In this case, the inclination angle of the sewing table 16 is provided so as to be inclined in two stages, that is, the thick tatami 100 and the thin tatami 100. The tilt angle of the sewing table 16 may be a device that is manually performed by an operator.

  In FIG. 2, reference numeral 48 is an operation switch, and 50 is a ruler for the operator to position the tatami mat and place a straight line on the tatami mat surface with the side 110 of the tatami mat 100 on the sewing machine mechanism 20 side. Show.

  By the way, as described above, as shown in FIG. 13 (A) in the flat stitching process, and in the reverse stitching process, as shown in FIG. 13 (B) and FIG. The swinging angle α is fixed at, for example, 8 ° because the swinging mechanism is swung between the penetrating position A1 of the sewing needle 112 and the standby position A2.

  Therefore, in this case, as shown in FIG. 14A, for example, when the thickness T of the tatami mat 100 is an intermediate thickness such as 55 mm, the sewing depth D1 is an appropriate dimension that is just good. It has become.

On the other hand, as shown in FIG. 14B, for example, when the thickness T of the tatami mat 100 is as thick as 63 mm, the sewing depth D3 becomes large, and the sewing needle 112 is The resistance received increases, and the sewing needle 112 may be bent or broken.
Further, in the flat stitch sewing process, the sewing needle 112 is passed through the tatami 100 to perform sewing, so that the thicker the tatami 100 is, the greater the resistance that the sewing needle 112 receives, and the sewing needle 112 is bent. Or it may break.

  In particular, when the thickness T of the tatami mat 100, which is an all-board floor made by stacking several layers of building material boards made of wood chips, or a hard straw floor, is relatively thick, the tatami mat 100 is sewn in the flat stitch sewing process or the reverse stitching process. The resistance received by the needle 112 increases, and the sewing needle 112 may be bent or broken.

  At this time, as shown in FIGS. 15 and 16, the diameter d1 of the needle guide hole 212 for inserting the sewing needle 112 of the needle guide plate member 210 is compared with the diameter d2 of the sewing needle 112. If the size is large, the sewing needle 112 is not accurately guided in the needle guide hole 212 of the needle guide plate member 210, and the straightness of the sewing needle 112 deteriorates due to swinging. There is a possibility that 112 may bend or break.

  For this reason, in the tatami mat sewing apparatus 10 of the present invention, the sewing machine mechanism 20 is provided with the sewing needle guide mechanism 120 having the configuration shown in FIGS. 6, 7 </ b> A to 7 </ b> B.

  The sewing needle guide mechanism 120 includes a substantially rectangular needle guide plate member 122 as shown in FIGS. 6 and 7A to 7B.

  The needle guide plate member 122 includes an upper needle guide plate 124 as shown in FIGS. 6 and 7A. As shown in FIG. 7A, the upper side needle guide plate 124 has two opposing projecting portions that project from the inner diameter side and constitute a needle guide hole 126 through which the sewing needle 112 is inserted and guided. 128 is formed.

  As shown in FIG. 7A, two opposing sewing thread guide grooves 130 into which the substantially fan-shaped sewing thread 114 is inserted are formed so as to face each other.

  On the other hand, the needle guide plate member 122 includes a lower side needle guide plate 132 as shown in FIGS. 6 and 7B. The lower needle guide plate 132 is formed with a recess 134 for overlapping the upper needle guide plate 124.

  As shown in FIG. 7B, two opposing projecting portions 136 projecting on the inner diameter side are formed at positions shifted by 90 ° from the projecting portion 128 of the upper needle guide plate 124. Yes.

  Further, as shown in FIG. 7B, two opposing sewing thread guide grooves 138 through which the substantially fan-shaped sewing thread is inserted at a position shifted by 90 ° from the sewing thread guide groove 130 of the upper needle guide plate 124. Is formed.

  Then, as shown in FIG. 7C, the upper side needle guide plate 124 and the lower side needle guide plate 132 of the needle guide plate member 122 are vertically overlapped, so that the needle is shifted by 90 °. Four sewing thread guide grooves 140 are formed on the outer periphery (periphery) of the guide hole 126. In FIG. 7, reference numeral 150 denotes a fastening hole for overlapping the upper needle guide plate 124 and the lower needle guide plate 132 vertically and fixing them with screws or the like.

  With this configuration, the needle guide plate member 122 for guiding the sewing needle 112 of the sewing needle guide mechanism 120 is formed on the outer periphery of the needle guide hole 126 through which the sewing needle 112 is inserted and the needle guide hole 126. The sewing thread guide groove 140 into which the sewing thread 114 is inserted is provided.

  Therefore, since the sewing thread guide groove 140 through which the sewing thread 112 is inserted is provided separately, the diameter d1 of the needle guide hole 126 is substantially the same as the diameter d2 of the sewing needle 112, as shown in FIG. be able to.

  Therefore, the sewing needle 112 can be surely guided through the needle guide hole 126 of the needle guide plate member 122, is excellent in linearity, has a thick tatami mat, and resists the sewing needle 112. Even in this case, there is no possibility that the sewing needle 112 bends or breaks.

  Further, since the sewing thread guide groove 140 into which the sewing thread 114 is inserted is provided, the sewing thread 114 can pass through the sewing thread guide groove 140 of the needle guide plate member 122 without resistance, and the sewing thread 114 is prevented from being broken. Therefore, the tatami edge 106 can be securely sewn and sewn to the side 110 of the tatami 100, and the sewability is excellent.

  Further, since a plurality of sewing thread guide grooves 140 are formed on the outer periphery of the needle guide hole 126 (four in this embodiment), when the sewing needle 112 is mounted on the sewing machine mechanism 20, the plurality of sewing thread guides 140 are provided. The sewing needle 112 may be attached so that the sewing thread 114 is inserted in accordance with the groove 140, and the degree of freedom of attachment is improved.

  The number and shape of the sewing thread guide grooves 140 can be appropriately changed as will be described later. Further, the number of needle guide plates is not limited.

  Further, as described above, the needle guide plate member 122 is composed of a plurality of needle guide plates (upper needle guide plate 124 and lower needle guide plate 132). Only a part of the needle guide plates needs to be replaced, which is convenient and can reduce the cost.

  In addition, the needle guide hole 126 and the sewing thread guide groove 140 are formed by overlapping a plurality of needle guide plates (upper needle guide plate 124 and lower needle guide plate 132) in this manner. Then, the thickness of the needle guide plate member 122 is increased, and the hole depth of the needle guide hole 126 is increased.

  As a result, the sewing needle 112 can be reliably guided through the needle guide hole 126 of the needle guide plate member 122, and the sewing needle 112 can be bent even when the tatami mat 100 is thick even with excellent straightness. There is no risk of breaking.

  The shapes of the needle guide hole 126 and the needle guide hole 126 of the needle guide plate member 122 can be changed as appropriate.

  For example, as shown in FIG. 8 (A), a substantially L-shaped upper side needle guide plate 124 and a lower side needle guide plate 132 are vertically stacked to form a square-shaped opening 142, and this The four triangular corner portions 142 a can be used as the sewing thread guide grooves 140.

  Further, in the case of the pattern of FIG. 8A, as shown in FIG. 9A, the pattern may be composed of one (integrated) needle guide plate 144. Further, as shown in FIG. 9B, the upper side needle guide plate 124 and the lower side needle guide plate 132 that are different in shape from those in FIG.

  Further, as shown in FIG. 9C, a plurality of needle guide plates (the left needle guide plate 146 and the right needle guide plate 148) are brought into contact with each other in the horizontal direction, so that the needle guide hole 126 and the sewing thread guide are obtained. The groove 140 may be formed.

  In this way, the needle guide hole 126 and the sewing thread guide groove 140 are formed by abutting several needle guide plates (the left needle guide plate 146 and the right needle guide plate 148) in the horizontal direction. Easy assembly and parts replacement.

  Further, as shown in FIG. 8 (B), the shape of the sewing thread guide groove 140 can be made into a substantially bow shape, and as shown in FIG. 8 (C), the shape of the sewing thread guide groove 140 can be made into a substantially dome shape. It is.

  In addition, about the others, the tatami mat sewing apparatus 10 of this invention is the same as that of the operation | movement of the conventional sewing apparatus 200 of patent document 1, and it abbreviate | omits about the detail.

That is, similar to the operation of the conventional sewing device 200 of Patent Document 1,
(1) Upper front flat stab process,
(2) Tatami rotation process;
(3) Lower front flat stab process,
(4) Tatami rotation process;
(5) Tatami sewing table tilting process;
(6) The upper front reverse stitching process;
(7) Tatami sewing table horizontal return process;
(8) tatami mat rotation process;
(9) Tatami sewing table tilting process;
(10) Lower front reverse stitching process;
(11) a tatami sewing table horizontal returning step;
May be performed.

In addition, similar to the operation of the conventional sewing device 200 of Patent Document 1,
(1) Upper front flat stab process,
(2) Tatami rotation process;
(3) Lower front flat stab process,
(4) a process in which the operator moves to the sewing machine side and folds the lower front edge and the lower edge paper;
(5) Tatami sewing table tilting process;
(6) Lower front reverse stitching process;
(7) Tatami sewing table horizontal return process;
(8) tatami mat rotation process;
(9) Tatami sewing table tilting process;
(10) an upper front reverse stitching process;
(11) a tatami sewing table horizontal returning step;
It is also possible to perform.

further,
(1) Upper front flat stab process,
(2) a process in which the operator moves to the sewing machine side and folds the lower front edge and the lower edge paper;
(3) Tatami sewing table tilting process;
(4) Upper front reverse stitching process;
(5) Tatami sewing table horizontal return step;
(6) Tatami rotation process;
(7) lower front flat stab process;
(8) a step in which the operator moves to the sewing machine side and folds the lower front edge and the lower edge paper;
(9) Tatami sewing table tilting process;
(10) Lower front reverse stitching process;
(11) a tatami sewing table horizontal returning step;
It is also possible to perform.
Further, the present invention is not limited to the above-described process order, and can be an appropriate process order.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this. For example, in the above embodiment, the tatami stitching device 10 of the present invention is not particularly limited. It can be configured to be compatible with both semi-tatami mats and 1 tatami mats.

  In the above-described embodiment, the flat stitching process and the reverse stitching process are configured to be performed by the common sewing machine mechanism 20, but the sewing machine mechanism 20 is dedicated to the reverse stitching process, and a separate flat stitch sewing machine mechanism is provided. It can also be provided.

  Further, in the above embodiment, one sewing mechanism 20 is provided, but another sewing mechanism 20 is provided along each side 110 on both sides of the tatami 100, and at the same time flat on both sides 110 on the tatami 100. It is also possible to configure to perform a stab stitching process and a reverse stitching process.

  It is also possible to apply the sewing needle guide mechanism of the tatami stitching device of the present invention to a tatami stitching device dedicated to flat stitch sewing.

  Further, it is possible to connect a plurality of sewing mechanisms 20 so that a plurality of tatami mats 100 are simultaneously subjected to a flat sew stitching process and a reverse stitching process, and so on without departing from the object of the present invention. Various changes are possible.

  TECHNICAL FIELD The present invention relates to a tatami stitching device for sewing tatami edges, and in particular, performs flat sew on the side of a tatami mat, and sews tatami edges and under-edge paper on the surface side of the tatami mat, or reverse stitches. It can be applied to a sewing needle guide mechanism of a tatami sewing device for sewing a tatami edge to the side of the tatami mat and a tatami sewing device provided with a sewing needle guide mechanism.

DESCRIPTION OF SYMBOLS 10 Tatami sewing apparatus 12 Base frame 14 Support member 16 Sewing base 20 Sewing mechanism 22 Tatami push bar 24 Opening part 26 Rotating seat 28 Guide rail 30 Edge supply reel 32 Under edge paper supply reel 34 Adjustment member supply reel 36 Tatami floor cutting Blade 38 Tatami surface cutting blade 40 Motor 42 Motor pulley 44 Link mechanism 46 Pivot shaft 48 Operation switch 50 Ruler 68 Sewing machine slide mechanism 100 Tatami 102 Tatami floor 104 Top surface 106 Tatami edge 108 Edge paper 110 Side 112 Sewing needle 112a Through hole 112b Guide Groove 114 Sewing thread 116 Inclined surface 116a Lower end position 120 Needle guide mechanism 122 Needle guide plate member 124 Upper needle guide plate 126 Needle guide hole 128 Projecting portion 130 Thread guide groove 132 Lower needle guide plate 134 Recess 136 Projecting portion 138 Thread Guide groove 140 Thread guide groove 142 Opening 42a Corner portion 144 Needle guide plate 146 Left needle guide plate 148 Right needle guide plate 150 Fastening hole 200 Sewing device 202 Mounting base 204 Fixing tool 206 Sewing mechanism 208 Needle guide mechanism 210 Needle guide plate member 212 Needle guide hole A1 Through position A2 Standby position d1 Diameter d2 Diameter α Swing angle β Inclination angle

Claims (9)

A sewing needle guide mechanism of a tatami sewing device for sewing a tatami edge to a side of a tatami mat,
The sewing needle guide mechanism includes a needle guide plate member for guiding the sewing needle,
The needle guide plate member is
A needle guide hole for inserting the sewing needle;
A sewing thread guide groove formed on the outer periphery of the needle guide hole and through which the sewing thread is inserted;
A sewing needle guide mechanism for a tatami-stitching device.   The sewing needle guide mechanism of the tatami stitching apparatus according to claim 1, wherein a plurality of the sewing thread guide grooves are formed on an outer periphery of the needle guide hole.   The sewing needle guide mechanism of the tatami stitching device according to any one of claims 1 to 2, wherein the needle guide plate member is composed of a single needle guide plate.   The sewing needle guide mechanism of the tatami stitching device according to any one of claims 1 to 2, wherein the needle guide plate member is composed of a plurality of needle guide plates.   The sewing needle guide mechanism of the tatami stitching device according to claim 4, wherein the needle guide holes and a sewing thread guide groove are formed by superimposing the plurality of needle guide plates vertically. .   The sewing needle guide of the tatami stitching device according to claim 4, wherein the needle guide hole and a sewing thread guide groove are formed by abutting the plurality of needle guide plates in a horizontal direction. mechanism.   A tatami stitching device comprising the sewing needle guide mechanism of the tatami stitching device according to any one of claims 1 to 6. The tatami stitching device arranges the tatami in a slanted shape, and performs a reverse stitch on the side of the tatami by a sewing machine mechanism that moves along the side of the tatami,
The tatami stitching device according to claim 7, wherein the tatami stitching device is a tatami stitching device for sewing a tatami edge to a side of the tatami mat. The tatami stitching device performs stab stitching on the side of the tatami by a sewing mechanism that moves the tatami horizontally along the side of the tatami,
Place the tatami that has been flat-stitched in an inclined manner, and by the sewing machine mechanism, perform reverse stitching on the side of the tatami,
The tatami stitching device according to claim 8, wherein the tatami stitching device is a tatami stitching device for sewing a tatami edge to a side of the tatami mat.

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