JPH038230Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) The present invention is a method for sewing a circular cloth, which can securely rotate and transfer the circular cloth while keeping it in a fixed position when sewing a circular cloth. Regarding equipment.

(Prior Art) For example, there is a device disclosed in Japanese Utility Model Application Publication No. 116990/1983 as a device for inserting a ring-shaped rubber into the waist area of pants or the like and automatically feeding it to a sewing machine.

This disclosed device covers a folded end of a circular cloth serving as a torso and an annular rubber positioned within the folded cloth end over left and right hanging rollers. By means of inner and outer feed rollers (puller device) arranged at different positions from the hooking rollers, the fabric is rotated and transferred in the sewing direction by pinching it from above and below, and only the folded edge of the fabric that has been rotated and transferred is It is designed to be sewn using a sewing machine.

(Problem to be solved by the invention) However, in the case of such a device, when the folded end of the cloth and the annular rubber are rotated and transferred,
The inside fabric of the edge of the fabric that comes into contact with the hanging roller and the inner feed roller is particularly tightened inward by the annular rubber, and the edge of the fabric that is not tightened by the annular rubber is There tends to be a difference in the feed amount between the outer fabric and the inner fabric, which causes a misalignment in the feeding direction (sewing direction) between the outer fabric and the inner fabric at the edge of the fabric, making it impossible to feed the fabric evenly to the sewing machine. There is a problem that makes it difficult to perform proper sewing.

The present invention was developed in view of the above circumstances, and its purpose is to provide a feeding device for sewing circular cloth that can effectively prevent the above-mentioned misalignment in the feeding direction (sewing direction). do.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a belt body that attaches the cloth end of a circular cloth to the outer surface and rotationally transfers the cloth end in the sewing direction. , a winding-side drive roller that winds the band in one direction so that the fabric end portion is rotationally transferred in the sewing direction together with the band; and a rewind-side drive roller that rewinds the band in the other direction. The belt comprises a drive means for driving each of the drive rollers, and a plurality of latching rollers disposed in a transport area of the belt stretched between the winding-side drive roller and the rewinding-side drive roller. be.

(Function) By adopting such a configuration, for example, in the case of an elastic waistband of pants, etc., the folded end of the folded fabric in the waistband can be wrapped with the annular rubber positioned inside. When attached to the outer surface of the body and in this state, when the winding side drive roller is driven, the folded fabric edge and the annular rubber are rotated together with the band in the sewing direction, and the folded fabric is It is possible to effectively prevent misalignment in the feeding direction (sewing direction) between the outer fabric and the inner fabric at the end.

(Example) Hereinafter, a feeding device for sewing a circular cloth according to the present invention will be described with reference to an example shown in the drawings.

FIG. 1 shows a feeding device 1 for sewing circular cloth according to the present invention installed in a sewing machine 3 placed on a workbench 2. The feeding device 1 is connected to a rail 4 on the workbench 2 and an air cylinder. (not shown) so as to be movable as appropriate between the position of the sewing section of the sewing machine 3 and a position separated from the sewing section of the sewing machine 3.

The sewing machine 3 is a three-needle machine with an automatic thread cutting device (not shown) for upper thread and lower thread, and a three-wrap lapper guide (not shown) is provided in front of the three-needle position.
is located.

As shown in FIG. 1, the feeding device 1 for sewing circular cloth includes a fixing machine frame 7 fixed to a base 6, and a rail 8 on the base 6 and an air cylinder 9 connected to the fixing machine frame 7. The movable mechanism 10 is movable back and forth through the fixed machine frame 7, and the rewind side drive roller 11 is pivotally supported on the fixed machine frame 7, while the rewind side drive roller 11 is supported on the movable machine frame 10. A driving roller 12 is pivotally supported, and a portion diagonally above the winding side driving roller 11 of the fixed machine frame 7 and the movable mechanism 10
Hooking rollers 13, 13 are rotatably supported obliquely above the rewind side drive roller 12, respectively, and further, the rewind side drive roller 11
A roller 20, which winds and rewinds the band 14 as described below by the biasing force of a spring (not shown), is provided between the rewind-side drive roller 12 and the retaining roller 13 above it, and between the rewind-side drive roller 12 and the retaining roller above it. 21 are pivotally supported by the fixed machine frame 7 and the movable machine 10, respectively.

The belt 14 is stretched from the unwinding roller 21 to the winding roller 20 via the unwinding driving roller 12, the locking rollers 13, 13, and the winding driving roller 11.

Further, the drive shaft 11a of the winding side drive roller 11, which is supported by the fixing frame 7, can be driven by an intermittent feed device 16 and a motor 17 via an electromagnetic clutch 15, as shown in FIG. connected. In this connected state, the belt member 14 is connected to the intermittent feeder 16 via a one-way clutch 18a at the end of the shaft, and to the motor 17 via another one-way clutch 18b.
can be transferred in the sewing feed direction of the sewing machine 3 by intermittent rotation.

On the other hand, the drive shaft 12a of the rewind side drive roller 12, which is supported by the movable machine frame 10, is connected to another motor 19, and the belt 14 is transported in the rewind direction by the drive of the motor 19. It is something to do.

With the above structure, as shown in FIG. When the belt member 14 is mounted with the annular rubber b positioned on the belt, and in this state, the one motor 17 is driven to rotate the winding side drive roller 11, the belt body 14 is transferred in the winding direction. The folded cloth end A and the annular rubber b are rotated and transferred in the sewing feed direction of the sewing machine 3.
Furthermore, as the folded fabric end A and the annular rubber b are rotated and transferred, the folded fabric edge is moved by a three-wrap lapper guide (not shown) disposed in front of the needle of the sewing machine 3. The tip side of part A,
Further, the folded end portion A is guided between the inside fabric and the annular rubber b to form the end portion A into three wraps. Then, after all or three predetermined lengths of the cloth end portion A are wound, the winding-side drive roller 11 is intermittently rotated by the intermittent feeding device 16, so that the belt 14 is intermittently rotated. While being transferred, the cloth end portion A and the annular rubber b are also intermittently rotated and transferred integrally therewith. The drive of the winding-side drive roller 11 by the motor 17 and the drive of the intermittent feed device 16 are automatically switched via the one-way clutches 18a and 18b.

Further, the belt 14 transferred by the drive of the winding side drive roller A is transferred to the winding side roller 20.
It is wound in by the biasing force of the spring.

As the cloth end A and the annular rubber b are intermittently rotated and transferred in the sewing feed direction, only the cloth end A is sewn by the three needles of the sewing machine 3.

When this sewing is completed, the rewind side drive roller 12 is rotated by the drive of the motor 19 with the cloth end A removed, and the belt 14 is transported in the rewind direction and the rewind is performed. It is rewound onto the side biasing roller 12 by the biasing force of its built-in spring.

Note that the feeding device for sewing circular cloth according to the present invention is not limited to sewing the ends of cloth wrapped with circular rubber b such as pants, for example, when rotating the cloth in the sewing feeding direction. It can also be applied to sewing, decorative stitching, etc.

(Effects of the invention) As described above, according to the feeding device for sewing circular cloth of the present invention, even if the edge of the cloth is folded back, and even if the circular rubber is placed inside the folded part, Since the edge of the fabric is rotated and transferred together with the band in the sewing direction, the outer fabric and the inner fabric of the folded edge of the fabric are evenly fed to the sewing machine, making it possible to perform proper sewing. It has the following effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an installed state of an embodiment of the feeding device according to the present invention, Fig. 2 is a schematic plan view showing its driving mechanism, and Fig. 3 is a schematic front view showing a state in which an annular cloth is rotated and transferred. It is. A... Annular cloth folded end of cloth, 11... Winding side drive roller, 12... Rewinding side drive roller, 13... Hanging roller, 14... Band body, 16...
...Motor, 17...Intermittent feed device, 19...Motor.

Claims (1)

[Claims for Utility Model Registration] A band body that attaches a cloth end of a circular cloth to its outer surface and rotates and transfers the cloth end integrally in the sewing direction; and the cloth end rotates together with the belt body in the sewing direction. a winding-side drive roller that winds the belt in one direction so as to be transported; a rewinding-side drive roller that rewinds the belt in the other direction; a drive means that drives each of the drive rollers; and a drive roller that drives the belt. A feeding device for sewing annular cloth, comprising a side drive roller and a plurality of hooking rollers disposed in a transport area of a belt stretched over the rewind side drive roller.