WO2013128545A1

WO2013128545A1 - Sewing machine

Info

Publication number: WO2013128545A1
Application number: PCT/JP2012/054764
Authority: WO
Inventors: 敏昭沢田
Original assignee: Ykk株式会社
Priority date: 2012-02-27
Filing date: 2012-02-27
Publication date: 2013-09-06
Also published as: TWI539052B; CN104136676A; TW201335457A; CN104136676B

Abstract

Provided is a sewing machine with which it is possible to maintain shapes of material which are folded over with material fold-over members. A sewing machine (10) comprises: a table (11) in which a fastener chain (C) is supplied to the upper face thereof; a pair of left-right material fold-over members (12) which are positioned upon the table (11), guide a left-right pair of materials (P) which are conveyed toward the upper face of the table (11), and fold over in flap shapes opposing lateral edge parts of the left-right pair of materials (P); a material conveyance path (R) which extends from the upper surfaces of the pair of left-right material fold-over members (12) toward the upper face of the table (11); a sewing machine (14) which is positioned further downstream of the material conveyance path (R) than the left-right pair of material fold-over members (12), and which stitches the left-right pair of materials (P) to the fastener chain (C); a left-right pair of pressing units (20) which, in the left-right pair of material fold-over members (12), press the left-right pair of materials (P) toward the material conveyance path (R); and a supplementary pressing unit (30) which presses the left-right pair of materials (P) toward the material conveyance path (R) between the left-right pair of material fold-over members (12) and a left-right pair of sewing machine fits (14a) of the sewing machine (14).

Description

Sewing machine

This invention relates to a sewing machine for sewing a plurality of fabrics continuously to a long fastener chain.

As a conventional sewing machine, a table to which a fastener chain is supplied on the upper surface, a pair of left and right fabric folding members arranged at the foremost portion on the table and folding back side edges of the pair of left and right fabric pieces in a flap shape, A sewing machine that is disposed behind the pair of left and right fabric folding members and sews the pair of left and right fabric pieces to the fastener chain; and a pair of left and right pressing portions that press the pair of left and right fabric pieces in the pair of left and right fabric folding members; (For example, refer to Patent Document 1).

US Pat. No. 5,806,450

However, in the sewing machine described in Patent Document 1, since the pair of left and right fabric folding members are arranged obliquely so as to descend toward the table in order to feed the fabric, the fabric is pulled backward during sewing. When the fabric is going to be linear, the fabric floats between the pair of left and right fabric folding members and the sewing machine foot, and it is difficult to maintain the shape of the fabric folded by the fabric folding member.

The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a sewing machine that can maintain the shape of the fabric folded by the fabric folding member.

The above object of the present invention can be achieved by the following constitution.
(1) A sewing machine that continuously sews a plurality of pairs of left and right pairs of fabrics on a long fastener chain, a table on which the fastener chain is supplied to the upper surface, and a table arranged on the table, facing the upper surface of the table A pair of left and right fabric folding members that guide the pair of left and right fabrics to be fed and that fold opposite side edges of the pair of left and right fabrics in a flap shape, and a fabric feed that extends from the upper surface of the pair of left and right fabric folding members to the upper surface of the table A path, a sewing machine that is disposed downstream of the pair of left and right fabric folding members and sews a pair of left and right fabrics on the fastener chain, and a pair of left and right fabric folding members; Between a pair of left and right pressing parts that press a pair of fabrics, and between a pair of left and right fabric folding members and a pair of left and right sewing feet of the sewing machine Sewing machine characterized by comprising a an auxiliary pressing portion for pressing the pair of dough toward the cloth feed path.
(2) The sewing machine according to (1), wherein the pressing unit includes a roller for pressing the cloth.
(3) The sewing machine according to (1) or (2), further including a support portion that supports the pair of left and right fabric folding members, wherein the pressing portion and the auxiliary pressing portion are attached to the support portion.
(4) Fabric passage portions are formed on the inner edges in the width direction of the pair of left and right fabric folding members, and the left and right fabric passage portions are formed obliquely so as to approach each other as they approach the pair of left and right sewing feet of the sewing machine. The pair of left and right pressing portions are arranged obliquely so as to approach each other as they approach the pair of left and right sewing feet of the sewing machine, according to any one of (1) to (3) Machine.
(5) The table and the pair of left and right fabric folding members are arranged so as to extend in a direction intersecting each other along the fabric feeding path, according to any one of (1) to (4), Sewing machine.
(6) In any one of (1) to (5), a gap is provided between the table and the pair of left and right fabric folding members, and a fastener chain is supplied from the gap toward the sewing machine. The sewing machine described.

According to the sewing machine of the present invention, the table on which the fastener chain is supplied to the upper surface, and the pair of left and right fabrics arranged on the table and fed toward the upper surface of the table, and the opposite sides of the pair of left and right fabrics A pair of left and right fabric folding members that fold the edges in a flap shape, a fabric feeding path extending from the upper surface of the pair of left and right fabric folding members to the upper surface of the table, and disposed downstream of the pair of left and right fabric folding members A sewing machine for sewing a pair of left and right fabrics to the fastener chain; a pair of left and right fabric folding members; a pair of left and right pressing portions that press the pair of left and right fabrics toward the fabric feed path; and a pair of left and right fabric folding members; An auxiliary pressing part that presses the pair of left and right fabrics toward the fabric feed path between the pair of left and right sewing feet of the sewing machine; Provided for, between the pair of fabric folded member a pair of left and right sewing machine foot, it is never float fabrics. Thereby, the shape of the cloth folded by the cloth folding member can be maintained.

It is a perspective view explaining one Embodiment of the sewing machine which concerns on this invention. It is an enlarged plan view of the periphery of the sewing machine foot of the sewing machine shown in FIG. It is a side view explaining the press part and auxiliary | assistant press part which are shown in FIG. FIG. 2 is a cross-sectional view of a pair of left and right fabric folding members shown in FIG. 1 on a fabric entrance side. FIG. 2 is a cross-sectional view of a pair of left and right fabric folding members shown in FIG. 1 on a fabric outlet side. It is an enlarged side view explaining the operation | movement of the auxiliary | assistant press part shown in FIG. It is a side view corresponding to Drawing 3 explaining the modification of the sewing machine concerning the present invention.

Hereinafter, an embodiment of a sewing machine according to the present invention will be described in detail based on the drawings. In the following description, the front side is the lower side of the paper surface of FIG. 2, the rear side is the upper side of the paper surface of FIG. 2, the left side is the left side of the paper surface of FIG. The right side and the upper side are the front side with respect to the paper surface of FIG. 2, and the lower side is the back side with respect to the paper surface of FIG. The left-right direction is also called the width direction.

As shown in FIGS. 1 and 2, the sewing machine 10 of the present embodiment includes a table 11 to which an open fastener chain C is supplied on the upper surface, a table 11 disposed on the table 11, and a feed toward the upper surface of the table 11. A pair of left and right fabric folding members 12 for guiding the pair of left and right fabrics P to be folded and folding opposite side edges of the pair of left and right fabrics P in a flap shape, and the upper surface of the table 11 from the upper surface of the pair of left and right fabric folding members 12 , A fabric feed path R extending from the left and right, a sewing machine 14 which is arranged on the downstream side of the fabric feed path R with respect to the pair of left and right fabric folding members 12, and a pair of left and right fabric folding In the member 12, a pair of left and right pressing portions 20 that press the pair of left and right fabrics P toward the fabric feeding path R, and a pair of left and right fabric folding members 12; Between the pair of right and left sewing foot 14a of the thin 14 comprises an auxiliary pressing portion 30 for pressing the pair of fabric P towards the cloth feed path R, the.

Further, as shown in FIG. 3, the table 11 and the pair of left and right fabric folding members 12 are arranged so as to extend in a direction intersecting with each other along the fabric feeding path R. That is, the upper surface of the fabric folding member 12 is inclined downward toward the upper surface of the table 11. Further, the pair of left and right fabric folding members 12 are arranged at a position higher than the table 11, and a gap S is formed between the front end portion of the table 11 and the rear end portions of the pair of left and right fabric folding members 12. . The fastener chain C is supplied from the gap S toward the upper surface of the table 11 and the pair of left and right sewing feet 14 a of the sewing machine 14. Note that reference numeral 14 b in FIG. 3 is a sewing needle of the sewing machine 14.

As shown in FIGS. 1, 4, and 5, a fabric passage portion 12 a that is folded back in a flap shape through a side edge portion of the fabric P is formed on each inner edge in the width direction of the pair of left and right fabric folding members 12. Yes. As shown in FIG. 2, the left and right fabric passage portions 12 a are formed obliquely so as to approach each other as they approach the left and right sewing feet 14 a of the sewing machine 14. In addition, the side edge part of the fabric P that has entered the fabric path portion 12a is folded back to the lower side (back side) and comes out of the fabric path portion 12a.

Further, the fabric folding member 12 includes a flat fabric placing portion

12b facing rollers

24 and 24 of the pressing portion 20, which will be described later, a fabric introduction end portion 12c positioned upstream in the fabric feeding direction, and a fabric feeding direction And a dough discharging end portion 12d located on the downstream side. The dough P discharged from the dough discharging end portion 12d is suppressed by the auxiliary pressing portion 30.

Also, as shown in FIGS. 2 to 5, the pair of left and right fabric folding members 12 are supported by a support section 15 having a concave cross section attached to the table 11. The support portion 15 includes a pair of front and rear columns 16 standing on the bottom portion 15a, and a frame 17 attached to the upper ends of the pair of front and rear columns 16 and extending along the horizontal direction of the table 11. . The pressing portions 20 are attached to the end portions of the front and rear frames 17, and the auxiliary pressing portion 30 is attached to the center portion of the rear frame 17. Further, as shown in FIG. 2, the left and right pressing portions 20 are arranged obliquely so as to approach each other as they approach the left and right sewing feet 14 a of the sewing machine 14.

Further, the support portion 15 is configured to be separable from the table 11. For this reason, the pair of left and right fabric folding members 12, the pressing portion 20, and the auxiliary pressing portion 30 are movable together with the support portion 15 in a direction away from the sewing machine 14. Thereby, the maintainability of the sewing machine 10 can be improved.

As shown in FIGS. 3 to 5, the pressing portion 20 is attached to a pneumatic or hydraulic first cylinder 21 attached to the upper surface of the end portion of the front frame 17 and to the upper surface of the end portion of the rear frame 17. A pneumatic or hydraulic second cylinder 22, a support plate 23 attached to lower ends of

rods

21 a and 22 a extending below the first and

second cylinders

21 and 22, and rollers attached to the front and rear of the support plate 23, respectively. 24, 24.

In the pressing portion 20 configured in this manner, the

rods

21a and 22a of the first and

second cylinders

21 and 22 are extended, whereby the support plate 23 is lowered, and the

rollers

24 and 24 are moved onto the fabric folding member 12. The cloth P is pressed toward the cloth feeding path R (the cloth placing portion 12b of the cloth folding member 12). Further, the

rods

21a and 22a are contracted, so that the support plate 23 is raised and the fabric P is released.

As shown in FIGS. 2, 3, and 6, the auxiliary pressing portion 30 includes a substantially L-shaped base member 31 attached to the rear surface of the center portion of the rear frame 17, and a lower rear end of the base member 31. A link 32 having a substantially L-shape in side view, which is swingably attached to the part via a pin 31a, a support rod 33 attached to the lower rear end of the link 32 and extending along the left-right direction of the table 11, and a support A pair of left and right arms 34 attached to both ends of the rod 33 at a predetermined angle, a pair of cylindrical left and right pressing rods 35 attached to the tip of the arm 34, and a central upper surface of the rear frame 17. The cylinder 36 is connected to the upper end of the link 32 at the tip of the rod 36a.

In the auxiliary pressing portion 30 configured as described above, when the rod 36a of the cylinder 36 extends, the pressing rod 35 moves downward about the pin 31a, and the pair of left and right fabric folding members 12 and the pair of left and right Between the sewing machine foot 14a, the pair of left and right fabrics P on the table 11 is pressed toward the fabric feed path R (table 11) by the left and right pressing rods 35 (see FIG. 3). Further, when the rod 36a of the cylinder 36 is contracted, the pressing rod 35 moves upward about the pin 31a, and the pair of left and right fabrics P is released (see FIG. 6). When the pressing rod 35 moves upward and the dough P is not being pressed, the dough P is lifted upward in the dough feeding path R as indicated by a two-dot chain line in FIG.

Further, the auxiliary pressing unit 30 holds the fastener chain C through the fabric P when the fabric P is pressed against the fabric feed path R (table 11) between the fabric folding member 12 and the sewing machine foot 14a. Press toward R (table 11).

As shown in FIG. 3, the pair of left and right sewing feet 14 a of the sewing machine 14 presses the fabric P toward the fabric feed path R (table 11) and pushes the fastener chain C through the fabric P through the fabric feed path R. Holding toward (table 11).

As described above, according to the sewing machine 10 of the present embodiment, in the pair of left and right fabric folding members 12, the pair of left and right pressing portions 20 that press the pair of left and right fabrics P toward the fabric feeding path R, and the pair of left and right fabrics. Between the pair of left and right fabric folding members 12 and the pair of left and right sewing feet 14a, and the auxiliary pressing portion 30 that presses the pair of left and right fabrics P toward the fabric feeding path R. The cloth P does not float between the pair of sewing machine feet 14a. Thereby, the shape of the fabric P folded by the fabric folding member 12 can be maintained.

Moreover, according to the sewing machine 10 of this embodiment, since the press part 20 is equipped with the

rollers

24 and 24 which press the cloth P, the cloth P can be pressed without generating wrinkles, and the cloth P can be pressed by the sewing machine foot 14a. Can be sent smoothly to the side.

Moreover, according to the sewing machine 10 of this embodiment, since the support part 15 which supports a pair of right-and-left fabric folding | returning member 12 is provided, and the press part 20 and the auxiliary | assistant press part 30 are attached to this support part 15, auxiliary | assistant press There is no need to separately provide a member for supporting the portion 30. For this reason, since the number of parts can be reduced, the manufacturing cost of the sewing machine 10 can be reduced.

Further, according to the sewing machine 10 of the present embodiment, the left and right fabric passage portions 12a are formed obliquely so as to approach each other as they approach the left and right sewing foot 14a of the sewing machine 14, and the left and right pressing portions 20 are 14 are arranged obliquely so as to approach each other as they approach the left and right sewing feet 14a. Therefore, when the fabric P is sent from the fabric folding member 12 to the sewing machine 14, the fabric P is gradually moved toward the sewing foot 14a. You can be in a posture. Thereby, when the fabric P is set on the fabric folding member 12, it is not necessary to accurately position the fabric P, so that the setting operation of the fabric P can be facilitated.

Moreover, according to the sewing machine 10 of this embodiment, since the fastener chain C is supplied toward the sewing machine 14 from the gap S between the table 11 and the pair of left and right fabric folding members 12, the fabric feed path R and the fastener A structure for joining the supply paths of the chain C can be obtained.

Note that, as a modification of the present embodiment, as shown in FIG. 7, an auxiliary pressing portion 40 may be attached to the sewing machine 14 instead of the auxiliary pressing portion 30. The auxiliary pressing portion 40 includes a cylinder 41 that is fixed to the sewing machine 14 and a pressing element 42 that is fixed to the tip of a rod 41a of the cylinder 41 and that has a rounded tip.

In this case, when the rod 41a of the cylinder 41 extends, the pressing element 42 moves downward, and the cloth P is pressed toward the cloth feeding path R (table 11) by the pressing element 42. Further, when the rod 41a of the cylinder 41 is contracted, the presser 42 is moved upward, and the fabric P is released.

In addition, this invention is not limited to what was illustrated to the said embodiment, In the range which does not deviate from the summary of this invention, it can change suitably.
For example, in the above embodiment, two rollers are attached to the support plate, but the present invention is not limited to this, and the number of rollers is arbitrary.

DESCRIPTION OF SYMBOLS 10 Sewing machine 11 Table 12 Cloth return member 12a Cloth passage part 14 Sewing machine 14a Sewing foot 15 Support part 20 Press part 21 1st cylinder 22 2nd cylinder 23 Support plate 24 Roller 30 Auxiliary press part 31 Base member 32 Link 33 Support rod 34 Arm 35 Press rod 36 Cylinder C Slide fastener chain P Fabric R Fabric feed path S Clearance

Claims

A sewing machine (10) for continuously sewing a plurality of pairs of left and right fabrics (P) to a long fastener chain (C),
A table (11) on which the fastener chain is supplied to the upper surface;
A pair of left and right fabric folding members (12) arranged on the table for guiding the pair of left and right fabrics fed toward the upper surface of the table and folding the opposing side edge portions of the pair of left and right fabrics into a flap shape When,
A fabric feed path (R) extending from the upper surface of the pair of left and right fabric folding members to the upper surface of the table;
A sewing machine (14) that is disposed on the downstream side of the fabric feed path with respect to the pair of left and right fabric folding members, and that sews the pair of left and right fabrics to the fastener chain;
In the pair of left and right fabric folding members, a pair of left and right pressing portions (20) that press the pair of left and right fabrics toward the fabric feeding path,
An auxiliary pressing portion (30) for pressing the pair of left and right fabrics toward the fabric feed path between the pair of left and right fabric folding members and the pair of left and right sewing feet (14a) of the sewing machine. A characteristic sewing machine.
The sewing machine according to claim 1, wherein the pressing portion (20) includes a roller (24) for pressing the fabric (P).
A support portion (15) for supporting the pair of left and right fabric folding members (12);
The sewing machine according to claim 1 or 2, wherein the pressing portion (20) and the auxiliary pressing portion (30) are attached to the support portion.
Fabric passage portions (12a) are respectively formed on the inner edges in the width direction of the pair of left and right fabric folding members (12),
The left and right fabric passage portions are formed obliquely so as to approach each other as they approach the pair of left and right sewing feet (14a) of the sewing machine (14),
The pair of left and right pressing portions (20) are arranged obliquely so as to approach each other as they approach the pair of left and right sewing feet of the sewing machine. Sewing machine.
The table (11) and the pair of left and right fabric folding members (12) are arranged so as to extend in directions intersecting each other along the fabric feeding path (R). The sewing machine according to any one of claims.
A gap (S) is provided between the table (11) and the pair of left and right fabric folding members (12),
The sewing machine according to any one of claims 1 to 5, wherein the fastener chain (C) is supplied from the gap toward the sewing machine (14).