JPH01218490A - Method for folding hem in three in towel hem sewing machine - Google Patents

Abstract

PURPOSE:To execute a tidy fold in three by inserting an insert ruler under a plate ruler, executing a primary fold and executing a secondary fold by means of an alligator to be turned. CONSTITUTION:A towel cloth (a) for one towel is set by locking a boundary part between a pile weaving part (d) and a hem (c) to a locking means 14 from an internal side so that a margin for a fold in three can be sufficiently secured. Next, the hem (c) is inserted between a plate ruler 13 and a machine stand upper surface 12 and a belt 42 to the extent that the hem (c) goes out to the external side of the ruler 13, and the primary fold is executed. Next, an alligator 16 to stand by in being opened at the external side of the plate ruler 13 is closed, a primary fold part to be inserted is held, an insert ruler 15 is returned up to a top dead center, thereafter, the primary fold part is folded back onto the plate ruler 13, and the secondary fold is executed. Next, a hem part C to be secondary-folded onto the upper surface of the plate ruler 13 is pressed down by a moving clamp 17, the locking means 14 is returned, the alligator 16 is opened, and thereafter, the part C is moved from the plate ruler 13 to a clamp for a sewing machine.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for folding a hem in three in a towel hem sewing machine.

[Prior Art] In the three-fold hem method in a conventional towel hem sewing machine, for example, as shown in FIGS. 5(a), (b), and (c), a longitudinal A towel is set at the installation location in the previous process in a predetermined positional relationship with respect to the ruler 52, around an elongated ruler 52 that is supported in a cantilevered manner parallel to the direction and at a slight distance above the upper surface. After the fabric a is transferred to a tri-folding location where the ruler 52 is provided by a conveyor or other transfer means, the hem portion C is folded in and folded into tri-folds using a hook-shaped folding ruler 53 that operates as shown by the arrow. .

[Problems to be Solved by the Invention] In the conventional hem folding method, since the cantilevered ruler 52 is used, it tends to swing during folding, making it difficult to neatly fold the hem into three. Even if such a system is provided, it has the disadvantage of resulting in a very complicated steady rest device. Furthermore, since the setting of the towel fabric is done at the installation location in the previous process, the towel hem sewing machine also has the drawback of becoming larger.

The present invention was proposed to solve the above-mentioned problems.The ruler that serves as the core of the tri-fold allows for stable and clean tri-folding, and the towel fabric can be placed directly at the tri-folding area to save space. The purpose of the present invention is to provide a method for trifolding a hem in a towel hem sewing machine with excellent properties.

[Means for Solving the Problems] The hem trifold method in the towel hem sewing machine of the present invention that achieves the above object is to fold the hem C of the towel fabric a cut from the long towel raw fabric A at the time b. In the towel hem sewing machine 1 that folds the hem into three and sews the hem portion C folded into three with the sewing device 9, the above-mentioned three-fold method applies parallel to the longitudinal direction near the edge of the horizontal upper surface 12 of the machine base 11. A first step of placing the hem C of the towel fabric a in parallel from the inside on an elongated rectangular flat plate ruler 13 provided horizontally at a slight interval above the upper surface 12, and the inside of the towel fabric a. A second step of inserting the ruler 15 from inside while holding it by the locking means 14 and inserting the hem C under the flat plate ruler 13 until it comes out to the outside of the ruler 13 and making a first fold, and opening it on the outside of the flat plate ruler 13. a third step in which the first folded hem portion C is folded back onto the ruler 13 by the alligator mouth 16 rotating on the upper surface of the ruler 13 or by the push-up ruler 18 to perform a second fold;
A fourth step of moving the hem portion C, which has been folded secondarily on the upper surface of the flat ruler 13, from above the ruler 13 toward the sewing device 9 in a clamped state after the locking means 14 is released by the moving clamp 17; It is characterized by being configured.

[Function] In the hem folding method in the towel hem sewing machine configured as described above, the elongated rectangular flat plate ruler 1
3 serves as a support for placing the hem C of the towel fabric A in parallel from the inside, and also serves as a guide.

As a first step, the hem C of the towel fabric a is placed parallel on the flat ruler 13, and then the insertion ruler 15 is placed on the locking means 14.
Hem C of the towel that was prevented from being moved by
is inserted between the flat plate ruler 13 and the top surface of the machine stand 11 to perform the primary folding as the second step. At this time, the insertion ruler 15 is moved until the tip is outside of the flat plate ruler 13 and folded. After the insertion ruler 15 has retreated to extend the hem portion C to the outside of the ruler 13, the crocodile mouth 16 that rotates on the upper surface of the flat plate ruler 13 or the looming ruler 1 that looms up
The hem portion C folded by step 8 is folded back onto the ruler 13 and second folding is performed as a third step to complete the tri-folding of the hem. 4th slide towards
After the secondary folded portion is clamped by the movable clamp 17 which performs the moving step of the process, the alligator opening 16 is opened and the pressing of the push-up ruler 18 is released. When the trifold part comes off the flat plate ruler 13, the alligator mouth 16 and the rising ruler 18
returns to its initial position.

[Example] An embodiment of the present invention will be described with reference to the drawings.

In Figures 1, 2, 4, and 6, hem portions are obtained by folding the hem C of a full-pile high-quality towel fabric A, which is cut from a long towel roll A at its margin b, into three on each side. The towel hem sewing machine L, which sews C with a sewing device 9 such as a sewing machine, is a device that roughly consists of a towel fabric setting/tri-fold section Y and a sewing section Z. A locking means 14 which is held so as to be horizontally reciprocating and vertically slidable with respect to the table 11 and the flat ruler 13 and locks the towel fabric at the needle tip, An elongated rectangular flat plate ruler 13 suspended horizontally above the upper surface 12 in parallel with the longitudinal direction at an interval corresponding to the thickness of at least two sheets of towel fabric a; An insertion ruler 15 that fits between the top surface 12 of the machine base and a flat ruler 1
A movable clamp 17 is provided, and a movable clamp 17 is provided, which opens on the outside of the ruler 13, stands by, closes, and then reciprocates approximately semicircularly around the horizontal axis of the approximately tip end of the ruler 13.

The locking means 14 is reciprocated and moved up and down by an air cylinder (not shown), and locks the boundary between the pile weave part d of the full pile fabric a and the hem C, for example, so that the hem C can be folded into three. , the hem C is moved to a predetermined position with respect to the flat ruler 13, and the hem C is blown up by air from the nozzle 14a, so as to be set as shown in FIG. 1(a). The locking means 14 is also configured so that its position can be changed in response to changes in the dimensions of the towel fabric a.

The flat ruler 13 is suspended via a pair of supporting members 23 and 23 from a top plate 22 that is horizontally supported above the top surface of the machine base by a support 21 extending upward from the side of the machine base 11. . An air cylinder 24 is installed horizontally in the transverse direction at the outer lower part of the support member 23, with the tip of its reciprocating rod 24a facing inward. At the tip of the rod 24 is an engaging body 25 that engages with the ruler 15 at the bottom dead center position in order to provide horizontal movement for insertion and extraction of the insertion ruler 15.
is provided. Of course, guide means 26 is also provided parallel to the air cylinder 24.

The insertion ruler 15 is suspended from the beam 28 via a support member 27 having an engaging plate 27a projecting outwardly, which moves downwardly and engages with the engaging body 25. The beam 28 is the lower end of a rod 31a of a vertical air cylinder 31 provided on a sliding plate 30 that is slidably engaged with a transverse notch 29 inside the top plate 22 via a rail 29a. is connected to. It is connected to the rod 33a of the air cylinder 33, which of course operates.

The crocodile 016 is pivotally supported on both sides so as to be openable and closable at the outer ends of arms 34 whose inner ends are slidably supported on both sides of the outer tip of the flat ruler 13.

Opening and closing of the alligator mouth 16 is performed by a small air motor 35 attached to the arm 34, and rotation of the arm 34 is performed by an air motor 36 attached to the flat ruler 13. Arm 34 on the sewing machine side
has a shape that does not interfere with the movement of the hem portion C folded in three.

The movable clamp 17 is constituted by a belt that is rotated by a motor 39 around a horizontal beam 38 attached to the lower end of a rod 37a of an air cylinder 37 provided on the top plate 22. Of course, vertical straight guide means 40 is provided between the top plate 22 and the horizontal girder 38. The movable clamp 17 moves the miramamp 41 from the trifold section Y to the sewing section Z.
In this way, the hem portion C folded into three is sandwiched between the upper surface of the rotating belt 42 that rotates outside the machine base 11 and can be stably fed.

In the single hem sewing machine 1 configured as described above, a trifold method will next be described. In the first step, as shown in FIG. 1(a), the locking means 1 is inserted into the towel fabric a for towel inspection from the inside so that a sufficient three-fold allowance is secured.
4, the boundary between the pile weave part d and the hem C is locked and set. In the second step, the air cylinder 31 is extended, the insertion ruler 15 is moved down to near the top surface of the machine base, and the air cylinder in the extended state is engaged with the engagement plate 27a to the waiting engagement body 25. 24 and the hem C as shown in FIG. 1(b).
The ruler 13 is inserted between the ruler 13 and the belt 42 until it comes out outside the ruler 13, and a primary fold is performed.

In the third step, the air motor 35 is activated to close the crocodile 016 that is open and waiting outside the flat plate ruler 13, grasp the inserted primary folding part, and move the inserted ruler 15 to the top dead center. Then, as shown in FIG. 1(c), the air motor 36 is operated to fold the primary folded portion back onto the flat ruler 13 to perform secondary folding.Through these primary folding and secondary folding, the paper is folded into three. A hem portion C is formed.

In the fourth step, as shown in FIG. 1(d), the air cylinder 37 is extended and the movable clamp 17 is moved downward to hold down the hem portion C that has been folded secondarily on the upper surface of the flat plate ruler 13, and then The locking means 14 is moved down and back, the alligator opening 16 is released by reversing the air motor 35, and the belt is rotated and moved from above the flat ruler 13 to the relay part with the clamp 41 for the sewing machine. go.

In the fifth step, when the trifold portion C comes off the flat plate ruler 13, the movable clamp 17 is returned to the top dead center, the air motor 36 is reversed, the alligator mouth 16 is returned, and the alligator mouth 16 is left on standby in the open state. Further, the locking means 14 is moved upward and returned to the lockable position.

In addition to the above-mentioned embodiment, as shown in FIG. 3, instead of the alligator opening 16, a folding ruler 18 for secondary folding, which is moved back and forth using air cylinders in two directions indicated by arrows, can also be used to fold the paper into three folds. It goes without saying that it is possible, and locking means 1
In addition to setting the towel fabric a according to step 4, it may also be done by hand.

[Effects of the Invention] Since the present invention is configured as described above, the flat plate ruler 13 that becomes the core of tri-folding is stably provided, and only the outer side of the ruler 13 is used. Therefore, the tri-fold part C can be pulled out and fed, resulting in neat tri-folds.In addition, since the towel fabric a can be set directly at the tri-folding location, the conventional setting area is omitted, resulting in a compact towel hem. Can be used as a sewing machine.

[Brief explanation of the drawing]

Figures 1 (a) to (d) are schematic explanatory diagrams showing the main steps of the tri-folding method, Figure 2 is a perspective view of the setting/tri-folding section, and Figure 3 is the implementation of another tri-folding method. Example illustration, 4th
The figure is a schematic plan view of a towel hem sewing machine, Nos. 5 (a) to (c).
) is a schematic explanatory diagram showing the state of the main steps of the conventional trifold method, and FIG. 6 is an explanatory diagram of the original towel roll. 110. Towel hem sewing machine, 956. Sewing device, 1
1. ,,machine, 12. ,,Top surface, 1"313.Flat plate ruler, 14.,Locking means, 15.,Insertion ruler,
16. ', ', Waniguchi, 17,,, Moving clamp, 1
8. , looming ruler, A16. Raw towel, al
l, towel cloth, b19. Free time. 184, Mu, C
16, Folded hem part. One or more - g7/mouth (aL) Cb)

Claims (1)

[Claims] 1. Fold the hem (c) of the towel fabric (a) cut into three at the time (b) from a long towel raw fabric (A), and attach the hem (c) folded into three to the sewing machine ( 9
In the towel hem sewing machine (1) that sews with a towel hem sewing machine (1), the above-mentioned three-folding method is applied to the horizontal upper surface (12) of the machine base (11) near the edge of the hem, parallel to the longitudinal direction and slightly spaced above the upper surface (12). From the inside, place the hem (c) of the towel fabric (a) on a long rectangular flat plate ruler (13) set horizontally.
) are placed in parallel, and while the inside of the towel fabric (a) is held by the locking means (14), the ruler (15) is inserted from the inside and the hem (c) is placed on the flat plate ruler (13). A second step of inserting the crocodile opening (16) under the ruler (13) until it comes out of the ruler (13) and folding it once; ) or by the rising ruler (18).
On top of 3), a third step of folding back the first folded hem portion (C) and making a second fold, a flat plate, and a ruler (13).
After the locking means (14) is released, the sewing device (9) is attached to the hem portion (C), which has been folded secondarily on the upper surface, from above the ruler (13) while being clamped by the movable clamp (17).
A method for tri-folding a hem in a towel hem sewing machine, characterized by comprising a fourth step of moving the hem in the direction of the towel hem sewing machine.