JP3069551B2 - Manufacturing method of bag-shaped knitted fabric - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a beverage container, for example,
The present invention relates to a method for manufacturing a bag-like knitted fabric that can be used as a cover for covering a mobile phone, a head portion of a golf club, and the like.

[0002]

2. Description of the Related Art A circular knitting machine capable of knitting a tubular knitted fabric while forming a spiral stitch has a high productivity and is a knitting machine for knitting knit products such as sweaters and knitted products such as socks. Widely used.

[0003] On the other hand, companies that manufacture and sell clothing such as socks have recently diversified their sales products. Production and sales of a bag-like knitted fabric that can be used as a cover for covering a container, a mobile phone, a head portion of a golf club, and the like may be planned.

[0004]

However, a knitted fabric knitted by a circular knitting machine is usually obtained as a tubular knitted fabric having both ends open. Therefore, when the planned product of the bag-shaped knitted fabric as described above is manufactured by using the conventional circular knitting machine, it is necessary to perform the sewing process after the knitting process, which increases the cost. There's a problem. For this reason, the planned product may not be worth the budget.

The present invention has been made in view of the above-mentioned conventional problems, and has a bag-like knitted fabric which can be used as a bag by closing the lower end of a tubular knitted fabric to form a bottom portion. It is another object of the present invention to provide a method for manufacturing a conventional circular knitting machine without providing a sewing step.

[0006]

In order to achieve the above object, a method for producing a bag-like knitted fabric according to the present invention comprises a knit CAD.
Using a circular knitting machine capable of cooperating with the upper stitch, the upper plate and the cylinder rotate together in the same cycle while holding the first stitch with the upper plate needle, and are mounted on the needle groove engraved around the cylinder. The first step of knitting the knitted fabric on the bottom part by a required course by sliding the stick needle up and down, and lowering the rotation speed of the integrally rotating upper plate and cylinder to reduce the rotation period of the upper plate. From the state where it is slower than the rotation cycle of the cylinder, the state where the upper plate does not rotate and only the cylinder rotates, and the next time the state where the upper plate and the cylinder rotate together in the same cycle is restarted,
The rotation of the cylinder is relatively advanced with respect to the upper plate, and the range of rotation to be advanced is in the range of 1/4 to 3 rotations, and the first stitch held by the upper plate needle is placed on the cylinder. A bottom surface is formed by taking in with a spatula needle and knitting at the position of the lower end of the side portion, and thereafter, a method of sequentially performing a third step of knitting the knitted fabric of the side portion for a required course is adopted.

[0007] By doing so, the lower end of the tubular knitted fabric is twisted by 1/4 to 3 turns in either the left or right direction while the lower end of the side surface portion is fixed, and is folded back. Since the bottom is formed by knitting at the position of the lower end, according to the method for manufacturing a bag-like knitted fabric according to the present invention, it is not necessary to provide a sewing step.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A method for manufacturing a bag-like knitted fabric according to the present invention uses a circular knitting machine capable of cooperating with a knit CAD, and holds the first stitch with the upper plate while holding the first stitch with the upper plate needle. The first step in which the cylinder rotates integrally in the same cycle, and the latch needle mounted on the needle groove engraved around the cylinder slides up and down to knit the knitted fabric on the bottom part for the required course. From the state where the rotation speed of the rotating upper plate and cylinder is reduced, and the rotation period of the upper plate is made slower than the rotation period of the cylinder,
The rotation of the cylinder relative to the upper plate progresses until the upper plate and the cylinder rotate again in the same cycle, after the upper plate does not rotate and only the cylinder rotates. The second step in which the range of rotation to be advanced is 1/4 to 3 rotations, and the first stitch held by the upper needle is taken in by the flat needle on the cylinder and knitted at the position of the lower end of the side portion. And a third step of forming the bottom portion and thereafter knitting the knitted fabric of the side portion for a required course.

Here, the circular knitting machine according to the present invention, which can cooperate with the knit CAD for knitting a bag-like knitted fabric, forms needle grooves at regular intervals around a cylindrical cylinder. A latch needle is mounted in the needle groove so as to be slidable up and down, and a cam fixed to the frame is provided on the outer periphery of the cylinder. When the cylinder rotates in a circle, the latch needle at the yarn feeder position acts as a cam. A circular knitting machine having a well-known structure having an upper plate provided with an upper plate needle above the cylinder and holding the first stitch and returning the stitch to the spatula needle when necessary. It is. The upper plate is usually rotated together with the cylinder at the same cycle to knit the knitted fabric, but if necessary, it must be rotated at a cycle later than the rotation of the cylinder, or the rotation must be temporarily stopped and restarted. It has functions that can be used.

In the method for manufacturing a bag-like knitted fabric according to the present invention, in the second step, the rotation range of the cylinder advanced relative to the upper plate is set to a range of 1/4 to 3 rotations.
The reason is that, even if the knitted fabric is thick, if the rotation range is 0 or more and less than 1/4, the hole existing at the center of the bottom surface formed is loosened and functions as a bag. This is because even if the knitted fabric is thin, if the rotation range is larger than 3 turns, the knitted fabric will feel tight and hinder the use as a bag. is there. Note that, in the normal case, the rotation range is 3/4.
It is desirable to set it to about one rotation.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for producing a bag-like knitted fabric according to the present invention will be described.
A description will be given based on the embodiment shown in FIGS. FIG. 1 is an explanatory view showing a first step of the present embodiment, and FIG. 2 is a second step of the present embodiment.
FIG. 3 is an explanatory view showing a third step of the present embodiment, FIG. 4 is an explanatory view showing the back side of the bottom part of a bag-like knitted fabric woven according to the present embodiment, and FIG. FIG. 6 is an explanatory diagram showing the front side of the bottom portion of the bag-shaped knitted fabric woven according to the example, FIG. 6 is an explanatory diagram showing the back side of the side portion of the bag-shaped knitted fabric woven according to the present embodiment, and FIG. It is explanatory drawing which shows the front side of the side part of the knitted bag-shaped knitted fabric.

FIG. 1 is an explanatory view of a first step of the present embodiment. In the middle of the first step, the upper plate of the circular knitting machine is lifted,
This shows a state in which the knitted fabric inside can be seen. First
In the process, the first stitch 11 is held by the upper plate needle 12 provided on the upper plate 13. As described above, the upper plate 13 and the cylinder 14 rotate integrally at the same cycle while the first stitch 11 is held by the upper plate needle 12. When the cylinder 14 rotates, the latch needle 15 slides up and down under the action of a cam fixed around the cylinder 14 to knit the knitted fabric of the bottom portion 1 for a required course. M indicates a circular knitting machine.

Next, FIG. 2 is an explanatory view of the second step of this embodiment. After the second step, the upper plate portion of the circular knitting machine is lifted so that the knitted fabric inside can be seen. Indicates the state. In the second step, first, the rotation speeds of the upper plate 13 and the cylinder 14, which have been rotating together, are sufficiently reduced while keeping the rotation cycle.

Next, the rotation cycle of the upper plate 13 is
After starting a state in which the rotation period is slower than the rotation cycle (hereinafter, referred to as clutch A operation), the upper plate 13 does not rotate and only the cylinder 14 rotates (hereinafter, referred to as clutch H operation). Until the plate 13 and the cylinder 14 are restarted to rotate integrally with each other in the same cycle, a step of advancing the rotation of the cylinder 14 by one rotation relative to the upper plate 13 is performed. By this operation, the knitted fabric of the bottom portion 1 is twisted one turn in the rotation direction of the cylinder 14 as shown in FIG.

The operation of the clutch A and the operation of the clutch H are performed within the circular knitting machine by the power and the cylinder 14.
Change the gear ratio of the clutch device provided between,
This is an operation for setting the neutral state, which is a function provided in the conventional circular knitting machine. In a circular knitting machine capable of cooperating with the knit CAD, when designing a knitted fabric on the knit CAD in advance, the clutch operation command is set between the knitting in the first step and the third step. Will be kept.

FIG. 3 is an explanatory view of a third step of the present embodiment. The upper plate portion of the circular knitting machine is lifted in the middle of the third step so that the inner knitted fabric can be seen. Represents. In the third step, first, the first stitch 11 held by the upper plate needle 12 is taken in by the knurling needle 15 on the cylinder 14 side, and knitted into the knitted fabric of the side surface portion 3 at the position of the lower end 2 of the side surface portion. I do. Thereafter, the knitted fabric of the side portion 3 is knitted for a required course. Reference numeral 1 denotes a formed bottom portion, and 4 denotes a twisted portion surrounded by a knitted fabric whose periphery is twisted so as to cover a hole existing at the center of the bottom portion.

Next, the third step will be described with reference to FIGS. 4 to 7, which show a bag-like knitted fabric knitted according to this embodiment. That is, in the third step, the first stitch 11 held by the upper needle 12 is held between the start of the first step and the end of the second step, as shown in FIGS. This is a step of knitting at the position of No. 2. By this operation, the cylindrical knitted fabric is fixed in a twisted state as shown in FIGS. 4 and 5, and the bottom surface portion 1 is formed. In addition, H has shown the bag-shaped knitted fabric.

In the bag-like knitted fabric H of the embodiment knitted in this way, as shown in FIGS. 4 and 5, the hole located at the center position is formed in the knitted fabric whose periphery is twisted. Since the closed state is maintained by being surrounded, even when, for example, a beverage container, a mobile phone, a head portion of a golf club, or the like is inserted into the bag-shaped knitted fabric, the function as the cover is not impaired.

When the bag-shaped knitted fabric H of the embodiment is used as a bag, the side shown in FIGS. 5 and 7 is used as a table. By doing so, the stitches at the lower end 2 of the side portion are hidden inside the bag, and are not conspicuous in appearance.

[0020]

As described above, according to the method for manufacturing a bag-shaped knitted fabric according to the present invention, a bag-shaped knitted fabric which can be used as a bag-like material can be formed using a conventional circular knitting machine. It is possible to manufacture without providing a sewing step. for that reason,
This has the effect that the number of manufacturing steps is reduced and the cost is reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a first step of an embodiment of a method for manufacturing a bag-like knitted fabric according to the present invention.

FIG. 2 is an explanatory view showing a second step of the embodiment of the method for manufacturing a bag-like knitted fabric according to the present invention.

FIG. 3 is an explanatory view showing a third step of the embodiment of the method for manufacturing a bag-like knitted fabric according to the present invention.

FIG. 4 is an explanatory view showing the back side of the bottom surface portion of a bag-like knitted fabric knitted by using the embodiment of the method for producing a bag-like knitted fabric according to the present invention.

FIG. 5 is an explanatory diagram showing a front side of a bottom surface portion of a bag-like knitted fabric knitted using the example of the method for manufacturing a bag-like knitted fabric according to the present invention.

FIG. 6 is an explanatory view showing the back side of the side surface of a bag-like knitted fabric woven using the embodiment of the method for manufacturing a bag-like knitted fabric according to the present invention.

FIG. 7 is an explanatory diagram showing a front side of a side surface portion of a bag-like knitted fabric knitted using the example of the method for manufacturing a bag-like knitted fabric according to the present invention.

[Explanation of symbols]

 M Circular knitting machine H Bag-like knitted fabric 1 Bottom part 2 Side part lower end 3 Side part 11 First stitch 12 Upper plate needle 13 Upper plate 14 Cylinder 15 Lapping needle

Claims (1)

(57) [Claims] 1. A close the lower end of the tubular fabric to form a bottom portion, knitted possible and the bag-like knitted fabric to use as a bag C
A method of manufacturing with a circular knitting machine capable of cooperating with AD ,
While the first stitch is held by the upper plate needle, the upper plate and the cylinder rotate together in the same cycle, and the latch needle mounted on the needle groove engraved around the cylinder slides up and down to move the bottom stitch. A first step of knitting a knitted fabric for a required course, and lowering the rotation speed of the integrally rotating upper plate and the cylinder to make the rotation period of the upper plate slower than the rotation period of the cylinder; Does not rotate, only the cylinder rotates, and then the cylinder rotates relatively to the upper plate until the next time the upper plate and the cylinder restart rotating together in the same cycle. The range of rotation to be advanced is in the range of 1/4 to 3 rotations, and the first stitch held by the upper needle is taken in by the flat needle on the cylinder and knitted at the lower end of the side part to make the bottom part After that, knit the side knitted fabric for the required course. The third bag-shaped knitted fabric manufacturing method characterized by comprising the step that.