JPH0662983U - Sewing machine cloth guide device - Google Patents

Abstract

(57) [Summary] [Purpose] The entire circumference of the tubular fabric is continuously sewn so that it does not hinder the progress of the fabric when the sewing start end makes one round and is fed back into the fabric guide device. Sewing to improve work efficiency. [Structure] A cloth guide 11 arranged at a front position of the sewing machine bed 1 and a guide piece 2 facing the cloth guide 11.
In the material guide device G configured to guide the material K in the two-fold state and feed it to the sewing portion, the guide piece 21 of the ruler 16 is normally arranged in the sewing progress direction. It is configured so that it can be switched between a working posture that is projected in a direction orthogonal to the working posture and a non-working posture that is retracted from the sewing advancing route of the cloth K.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is, for example, by folding one side end of a tubular material downward and guiding it in a double-folded state, such as hem stitching or top stitch sewing of knitted products such as T-shirts and underwear. The present invention relates to a material guide device for a sewing machine that feeds a cloth to a sewing section and performs a predetermined sewing.

[0002]

[Prior art]

 As a dough guide device of this type, a device having a structure as shown in FIGS. 4 to 6 has been conventionally known. In FIGS. 4 and 5, reference numeral 2 is a cross plate installed near the side end of the sewing machine bed 1. A needle plate 15 is provided on the side of the cross plate 2 and below the needle plate 15. The front and rear feed dogs (not shown) for feeding the material K in the direction of arrow A are arranged on the above, and a material presser and a needle (not shown) are provided above. Reference numeral 3 denotes an upper front opening cover attached to the side of the needle plate 15 on the sewing machine bed 1, and 4 denotes a lower front opening cover attached to the front surface of the sewing machine bed 1.

Reference numeral 5 denotes a rear fabric guide, which is attached to the upper surface of the upper front cover 3 above so as to be movable and adjustable in the arrow X direction via the long groove 5 a and the screw 6, and to one side of the fabric K. Guide the outside of the end KC. 7 is an upper knife adjusting lever cover, which is fixed to the upper surface of the upper front opening cover 3 with a screw 8 to protect the upper knife adjusting lever (not shown) from protruding to the upper surface of the front opening cover 3. ing. 9 is a dough guide mount, the base end of which is located on the front face of the lower front cover 4 and is adjustable in position in the long groove 9a by a screw 10 in the arrow Y direction orthogonal to the dough feed direction. The other end 9b is extended rearward along the material feeding direction.

Reference numeral 11 denotes a cloth guide, which is fixed to the other end 9 b of the cloth guide mounting base 9 with a screw 24. As clearly shown in FIG. 6, the material guide 11 has an inverted V-shape when viewed from the side, and guides the outer side of one side end KC of the material K folded in half by the curved guide surface 11a inside thereof. It is a thing. 12 is a ruler, the base end of which is attached to the lower front opening cover 4 by a screw (not shown), and the other end is a protrusion that stands up in an inverted L shape toward the dough guide 11 side. The piece 12a is formed. Reference numeral 13 denotes an inner piece fixed to the lower surface of the protruding piece 12a of the ruler 12 by a screw 14 (see FIG. 5) and protruding toward the inner curved guide surface 11a of the material guide 11. The piece 13 and the material guide 11 constitute a material guide device G that feeds the material to the sewing portion while bending one end KC of the tubular material K downward and guiding it in a two-fold state.

When performing bottom hem sewing or top stitching of T-shirts and underwear using the fabric guide device G of the sewing machine having the above-described configuration, as shown in FIG. After being set along the outer periphery of the cloth, sewing is performed while feeding in the direction of the arrow A. At this time, one side end KC of the cloth K is formed on the inner curved guide surface 11a of the cloth guide 11 and the guide piece 13 of the ruler 12. As shown in FIG. 6, by the tip portion, the needle N1 is bent downward and folded in two, and is guided in the folded state, and is also guided by the rear fabric guide 5 while being guided. , N2, the upper portion KA and the lower portion KB are sewn together to form a seam S.

[0006]

[Problems to be solved by the device]

 In the conventional fabric guide device for a sewing machine as described above, when the tubular fabric K is sewn and its sewing start end KD is transferred to the fabric guide device G, the sewing start end The KD is caught on the guide piece 13 of the ruler 12, and the fabric K cannot proceed any further. Therefore, conventionally, the operator temporarily suspends the sewing work, lifts the sewing start end portion KD above the material guide device G so as not to be caught by the guide piece 13, and then reduces the rotation speed of the sewing machine. The remaining unsewn parts had to be sewn, which not only required troublesome work, but also made it difficult to improve work efficiency.

The present invention has been made in view of the above circumstances, and enables an operator to continuously sew the entire circumference of a tubular material without interrupting the sewing work. An object of the present invention is to provide a fabric guide device for a sewing machine, which can save labor and improve efficiency.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, a cloth guide device for a sewing machine according to the present invention is arranged at a front position of a sewing machine bed, and at a position facing the cloth guide so that the cloth guide device projects toward the cloth guide. A ruler having a guide piece for guiding the sewing machine to the sewing machine while bending one side end of the tubular cloth downward and guiding the cloth cloth in a folded state. An operating posture that guides the guide piece of the ruler in a direction orthogonal to the sewing advancing direction to guide the tubular material in a two-fold state, and a non-operating posture that retracts from the advancing path of the tubular material in the sewing advancing direction. It is provided with a switching means that can be switched between and.

[0009]

[Action]

 According to this invention, the guide piece of the ruler, which normally constitutes the material guide device, projects in the direction orthogonal to the sewing traveling direction, and is elastically held in the operating state for guiding the tubular material in the two-fold state. With this guide piece and the curved inner guide surface of the cloth guide, one end of the tubular cloth is bent downward and guided in a double-folded state, and the cloth is fed into the sewing portion. Then, when the sewing progresses and the sewing start end of the cloth makes a round and is transferred into the cloth guide device, the guide start piece of the ruler is pressed by the sewing start end, and the guide piece of the spring moves. It is automatically switched to the non-acting posture retracted from the traveling path of the tubular fabric against the biasing force, and the bent end of the fabric is not caught by the guide piece, and further progress is not hindered. Predetermined automatic sewing can be smoothly performed up to the end of sewing.

[0010]

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a main part of a fabric guide device for a sewing machine according to the present invention. In FIG. 1, the same components as those of the conventional example shown in FIGS. , Their detailed description is omitted.

In FIG. 1, reference numeral 16 is a ruler, which is formed in a substantially L shape in a side view, and is attached to the front surface of the upper front cover 3 by a screw 18. The ruler 16 has a projecting surface 16a and a projecting surface 16f that is one step higher than the projecting surface 16a at one end of the upper surface of the ruler 16. The projecting surface 16a is provided with vertical and horizontal screw holes 16b and 16c. In addition, a groove 16d is formed at the base of the protruding surface 16f. A guide portion 16e for guiding the edge of the lower portion KB (see FIG. 6) of the fabric K is formed on the side of the protruding surface 16a so as to extend in the fabric traveling direction.

Reference numeral 19 denotes a cover plate, which is attached to the ruler 16 by a screw 20 screwed into the screw hole 16c. Reference numeral 21 is a guide piece, and a substantially arcuate concave surface 21a is formed on the upper surface of the base portion thereof, a through hole 21c is provided in the concave surface 21a, and a screw 23 is provided on the through hole 21c and the protruding surface 16a of the ruler 16. It is screwed into the formed screw hole 16b and is attached to the ruler 16 rotatably around the screw axis by a spring 22 described later. Further, the guide piece 21 is formed with a guide portion 21b having a substantially quadrangular shape from the base end portion thereof toward the front diagonally, and the guide portion 21b is rotated around the screw axis line so as to move toward the side of the cover plate 19. The working posture for guiding the tubular material K in a folded state by projecting it in a direction orthogonal to the sewing traveling direction from the edge, and the tubular material K in the sewing traveling direction behind the side edge of the cover plate 19. It is configured so that it can be switched to the non-working posture, which is retracted from the traveling path of. Reference numeral 22 denotes a spring for urging the guide portion 21b of the guide piece 21 to the working posture, one end of which is fitted in the groove 21d formed in the guide piece 21 and the other end of which is provided on the ruler 16. It is fitted in the groove 16d.

Next, the operation of the above configuration will be described. Normally, as shown in FIG. 2, the guide portion 21b of the guide piece 21 on the side of the ruler 16 is elastically held in a working posture protruding from the side edge of the cover plate 19 under the biasing force of the spring 23. Therefore, the guide piece 21 of the ruler 16 and the inner curved guide surface 11a of the cloth guide 11 are used to bend the one side end KC of the tubular cloth K downward and guide the cloth K in the two-fold state while the cloth K is sewn at the sewing portion. And perform predetermined sewing.

Then, when the sewing starts and the sewing start end KD of the cloth is transferred to the cloth guide device G, the guide piece 21 of the ruler 16 is pressed by the sewing start end KD, The guide piece 16 is switched to a non-acting posture retracted from the traveling path of the tubular cloth K against the biasing force of the spring 22, and the bent end of the cloth K is caught by the guide portion 16a of the guide piece 16, It is possible to smoothly perform a predetermined sewing up to the end portion of the sewing without hindering the further progress.

In the above embodiment, the guide piece 21 of the ruler 16 is projected in the direction orthogonal to the sewing traveling direction to guide the tubular cloth K in the two-fold state, and the sewing traveling direction. The spring 22 is used as the switching means that can be switched to the non-acting posture retracted from the traveling path of the tubular cloth K to the above. However, the switching means is not limited to this, and may be, for example, an air cylinder or a solenoid. Alternatively, a link mechanism or the like may be used.

[0016]

[Effect of device]

 As described above, according to this invention, the guide piece of the ruler normally protrudes in the direction orthogonal to the sewing traveling direction and is elastically held in the working posture for guiding the tubular material in the folded state. With this guide piece and the inner curved guide surface of the cloth guide, one side end of the tubular cloth is bent downward and guided in a predetermined two-fold state, and the material can be fed into the sewing portion. When the sewing starts and the end portion of the material to be sewn is transferred into the material guide device, the guide piece of the ruler is pressed by the end portion of the material to be urged by the spring. By doing so, it is possible to switch to the non-working posture, which is retracted from the traveling path of the tubular material, so that the bent end of the material does not get caught on the guide piece and further progress is not obstructed. The desired sewing can be performed smoothly up to the part. Therefore, it is possible to sew continuously over the entire circumference of the tubular cloth, and it is possible to save labor and improve work efficiency.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an essential part of a cloth guide device for a sewing machine according to an embodiment of the present invention.

FIG. 2 is a plan view of an essential part showing a normal sewing operation state.

FIG. 3 is a plan view of an essential part showing a sewing operation state of a sewing end portion.

FIG. 4 is a perspective view of a main part of a fabric guide device of a conventional tubular fabric sewing device.

FIG. 5 is a plan view of FIG.

FIG. 6 is a side view showing a state in which the cloth is folded in two.

[Explanation of symbols]

 1 Sewing bed 11 Fabric guide 11a Inner curved guide surface 16 Ruler 21 Guide piece 21b Guide part 22 Spring K Fabric KC One side end KD Sewing start end

Claims (1)

[Scope of utility model registration request] 1. A tubular cloth material comprising a cloth guide arranged at a front position of the sewing machine bed and a ruler arranged at a position facing the cloth guide and having a guide piece protruding toward the cloth guide. In a fabric guide device for a sewing machine configured to feed one side end portion downward and guide it in a two-fold state, in a sewing machine fabric guide device, the guide piece of the ruler is orthogonal to the sewing traveling direction. And a working posture that guides the tubular fabric in a folded state by projecting in the direction,
A fabric guide device for a sewing machine, which is provided with a switching means capable of switching to a non-acting posture retracted from a traveling route of a tubular fabric in a sewing traveling direction.