JPH024138Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Field of Industrial Application) The present invention relates to a terminal holding device for stretch yarn in a hosiery knitting machine for knitting socks or seamless stockings, for example.

(Prior Art) A sock knitting machine applied to this type of stockinette knitting that has already been proposed is constructed as shown in FIGS. 6 and 7.

That is, in FIGS. 6 and 7, a knitting needle cylinder 1 equipped with knitting needles 1a is vertically fitted in a stationary member (not shown) constituting the machine frame so as to be freely rotatable. A top cylinder 2 is provided above the knitting needle cylinder 1. A stationary member (not shown) constituting the machine frame directly above the top cylinder 2 is provided with a disk-shaped scissor stand 3 located on the virtual axis of the knitting needle cylinder 1. , this scissors stand 3 has
A drive shaft 4 is rotatably mounted by a bearing metal 5 and a thrust bearing 6. Furthermore, a saw blade-shaped cutter 7 is attached to the drive shaft 4 below the scissors stand 3.
A circular cutter 7 having a circular cutter 7 is mounted on a shaft so as to rotate together with the knitting needle cylinder 1 so as to prevent it from falling off.
is provided. Furthermore, on this scissor stand 3, a thread suction duct 9 having a suction port 9a and a fixed cutter 10 are provided so as to vacuum-suck ground yarn BY and pattern yarn PY, which will be described later. On the scissors stand 3 next to 9, there is a ground thread guide 1.
2 is attached, and this ground yarn guide 12 guides the ground yarn BY from each yarn path 11a of the yarn feeding unit 11 to the yarn suction duct 9. Furthermore, a pattern yarn guide 13 is provided on the scissors stand 3 near the yarn feeding unit 11 with a height shifted from the ground yarn guide 12, and each guide portion 13a of this pattern yarn guide 13 is , 13b, 13c, first, second, and third pattern yarn feeding units 14 are arranged. (Utility Model No. 60-110489).

Therefore, the yarn terminal holding device in the sock knitting machine described above, for example, when knitting stockinette socks or seamless stockings, cuts the ground yarn BY during knitting and knits with pattern yarn PY.
The yarn path 1 of the yarn feeding unit 11 is controlled in advance based on a signal from an electronic control circuit into which a knitting program is input.
1a is lifted as shown by the chain line in FIG. 6, the ground yarn BY of this yarn path 11a is caught by the knitting needle cylinder 1 together with the cutter 7a of the rotating circular cutter 7, and the ground yarn BY is caught in the above-mentioned ground yarn guide. 12 and the yarn suction duct 9 to the fixed cutter 10, the cutter 7 of the circular cutter 7
The ground yarn BY is cut by the cooperative action of a and the fixed cutter 10. Then, the end of this ground yarn BY is sucked upward by the suction force of the yarn suction duct 9, so that the end of the cut ground yarn BY is sucked upward by the suction force of the yarn suction duct 9.
and the thread path 11a, and the tension is maintained temporarily.

Based on the signal from the electronic control circuit into which the knitting program is input, each pattern yarn PY from the yarn path of each of the descending pattern yarn units 14 is selectively transferred to each knitting needle of the knitting needle cylinder 1. It is designed to be locked at 1a and knitted in stockinette.

(Problem to be solved by the invention) However, the ground yarn end holding device in the sock knitting machine that knits the socks and seamless stockings described above is not suitable for pattern yarns made of, for example, nylon, polyester fibers, or polypropylene fibers. Even if a stretch yarn made of elastic fiber yarn such as PY) is sucked upward by the suction force of the yarn suction duct 9, the pattern may be cut due to the use of a relatively thick stretch yarn made of elastic fiber yarn. The end of the yarn PY is not sucked upward by the suction force of the yarn suction duct 9 due to the tension at the time of cutting, but is pulled back by the elasticity of the stretch yarn itself, and the end of the yarn BY is pulled back by the elasticity of the stretch yarn itself.
The cut end of the pattern yarn PY is not held like the end of the thread suction duct 9 and the yarn path 11a, but is pulled back to each yarn path 14a and separated without being held in tension between the yarn suction duct 9 and the yarn path 11a. , it is difficult to perform stockinette knitting using the following pattern yarn PY.

On the other hand, in recent years, with the diversification and trend toward higher quality socks with patterns and seamless stockings, a plurality of pattern thread units 14 have been installed on the outside of the scissor base 3.
There is a need for a stretch yarn terminal holding means that can perform stockinette knitting using pattern yarns PY of different thicknesses from the yarn path 14a.

The present invention has been made in view of the above-mentioned circumstances, and includes a knitting needle cylinder equipped with knitting needles mounted on a stationary member so as to be rotatable in a vertical direction, and a circular katsuta knitting needle mounted on a scissor stand directly above the knitting needle cylinder. Mounted so that it rotates with the cylinder,
In a sock knitting machine equipped with a yarn suction duct and a fixed cutter on the scissor stand, when cutting the stretch yarn, the stretch yarn is scooped up onto the fixed guide by the movable guide operated by the electromagnet, and then cut into the circular cutter. Immediately before cutting with the fixed cutter, the brush is used to temporarily press and hold the stretch yarn, and the stretch yarn is cut with different thicknesses from the thread path of the plural pattern yarn units. To provide a terminal holding device for a stretch yarn which securely holds the terminal without slipping out.

[Structure of the idea]

(Means for Solving the Problems and Their Effects) In the present invention, a knitting needle cylinder equipped with knitting needles is installed in a stationary member so as to be rotatable in a vertical direction, and a circular cutter is attached to the knitting needles on a scissors stand directly above the knitting needle cylinder. In a sock knitting machine that is mounted on a shaft so as to rotate together with a cylinder, and has a thread suction duct and a fixed cutter on the scissor stand, a holding frame is provided on the scissor stand next to the thread suction duct, A fixed guide is provided at the base of the frame and extends outward from the scissors stand.
An electromagnet is installed vertically on the upper part of the holding frame, a horizontal shaft is provided below the electromagnet, and a brush holder having a brush is mounted on the horizontal shaft so that it can be attracted by the electromagnet. A movable guide is provided in the brush holder so as to surround the fixed guide from the outside, and when the stretch yarn is cut, the movable guide is actuated by the electromagnet to move the stretch yarn away from the iron core of the electromagnet. Use the guide to scoop it onto the fixed guide,
Before cutting with the circular cutter and the fixed cutter, the brush temporarily presses and holds the stretch yarn, ensuring that the end of the stretch yarn does not slip out from the thread path of the pattern thread unit. It is configured to do so.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

It should be noted that the present invention will be described with the same reference numerals attached to the same constituent members as those of the above-described specific example.

In FIGS. 1 to 5, reference numeral 1 denotes a knitting needle cylinder 1 equipped with knitting needles 1a that are rotatably fitted in a stationary member (not shown) constituting a machine frame in a vertical direction. This knitting needle cylinder 1
A top cylinder 2 is provided at the top of the cylinder. In addition, a stationary member (not shown) constituting the machine frame directly above the top cylinder 2 includes a scissor stand 3.
is located on the virtual axis of the knitting needle cylinder 1, and a drive shaft 4 is rotatably mounted on the scissors stand 3 via a bearing metal 5 and a thrust bearing 6. Further, a circular cutter 7 having a saw blade-like cutter 7a is mounted on the drive shaft 4 below the scissors stand 3 so as to rotate together with the knitting needle cylinder 1 so as not to fall off. In the gap between the circular cutter 3 and the circular cutter 7, well-known dial cams 8 are housed. Furthermore, on this scissor stand 3, there is a thread suction duct 9 having a suction port 9a and a fixed cutter 10.
is provided to vacuum and cut the ground yarn BY and fine pattern yarn PY, which will be described later, and a holding frame 15 is erected on the scissor stand 3 beside this yarn suction duct 9. At the base 15a of the holding frame 15, a fixed guide 16 extends outward (radially) from the scissors stand 3, and the free end 16a of the fixed guide 16 is connected to the circular cutter 7.
It is formed near the cutter 7a so as to be bent slightly downward to guide the thread. Further, an electromagnet 17 is vertically provided on the upper part 15b of the holding frame 15, and this electromagnet 17 is attached to the electromagnetic coil 1.
7a and an iron core 17b. moreover,
The holding frame 15 below the electromagnet 17 includes
A horizontal shaft 18 is provided, and a brush holder 19 made of a magnetic material that also serves as an electromagnetic attraction piece is rotatably mounted on the horizontal shaft 18. A brush 20 is attached to the fixed guide 16 at an angle so as to be in pressure contact with the upper surface thereof. That is, this brush 20 is adapted to temporarily hold the cut end of the stretch yarn PY with the upper surface of the fixed guide 16. Furthermore, a coil spring 21 is stretched between the brush holder 19 and the upper part 15b of the holding frame 15.
1 biases the brush holder 19 away from the iron core 17b of the electromagnet 17 when the electromagnet 17 is not excited;
8, a stopper 22 is connected to a movable guide 2 which will be described later.
In order to regulate the operation of brush holder 1,
The rotation range of 9 is regulated. Further, a movable guide 23 is provided at the base of the brush 20 that is integrated with the brush holder 19 so as to surround the fixed guide 16 from the outside, and this movable guide 23 rotates together with the brush 20. The free end 23a of the movable guide 23 and the free end 16a of the fixed guide 16 have a small gap (about 0.5
mm) C is formed (see Figure 3).

On the other hand, as shown in FIGS. 2 and 7, a yarn feeding unit 11 and a plurality of pattern yarn feeding units 14 are disposed on the stationary member outside the cutter 7a of the circular cutter 7, and Yarn BY or patterned yarn
When cutting the PY, the ground yarn is removed from each yarn path 11a or 14a of this yarn feeding unit 11 and each pattern yarn feeding unit 14.
BY and pattern yarn PY are guided to the yarn suction duct 9 through a fixed guide 16 and cut by the cutter 7a of the circular cutter 7 and the fixed cutter 10.

The operation of the present invention will be explained below.

(1) When cutting the ground yarn BY and holding its end The means for holding the end of the ground yarn BY in a sock knitting machine is as follows:
For example, when knitting stockinette socks or seamless stockings, cut the ground yarn BY in the middle of knitting,
When knitting with pattern yarn PY, the yarn guide 11a of the yarn feeding unit 11 is lifted from the position shown by the chain line in FIG. 4 in advance based on a signal from the electronic control circuit into which the knitting program is input. Then, the ground yarn BY of this thread path 11a is caught by the cutter 7a of the circular cutter 7 rotating together with the knitting needle cylinder 1, and is caught at the free end 23a of the movable guide 23.
The fixed cutter 1 is guided by the thread suction duct 9 and transferred to the upper surface of the fixed guide 16 while passing under the thread suction duct 9.
At the same time, the electromagnet 17 is energized based on the signal from the electronic control circuit into which the knitting program is input, and the brush 20 and the movable guide 23 are moved to the spindle as shown in FIG. A stopper 2 is placed around 18 against the elasticity of a coil spring 21.
By rotating to the left until it collides with 2, the above-mentioned ground thread
Facilitate the transfer of BY. Thus, the ground yarn BY is cut by the cooperative action of the cutter 7a of the circular cutter 7 and the fixed cutter 10. Then, the end of this ground yarn BY is sucked upward by the suction force of the yarn suction duct 9, so that the end of this cut ground yarn BY passes between the yarn suction duct 9 and the yarn path 11a. Temporarily held in tension.

(2) When cutting the pattern yarn PY and holding its terminal When cutting the pattern yarn PY during knitting and knitting with the base yarn BY, a signal from the electronic control circuit into which the knitting program is input in advance When the yarn path 11a of the yarn feeding unit 11 is lifted from the position shown by the chain line in FIG.
is hooked by the cutter 7a of the circular cutter 7 rotating together with the knitting needle cylinder 1, guided by the free end 23a of the movable guide 23, transferred to the upper surface of the fixed guide 16, passed under the yarn suction duct 9, and fixed. Transfer to cutter 10. At the same time, based on the signal from the electronic control circuit into which the knitting program is input, the electromagnet 17 is excited to move the brush 20 and the movable guide 23 into a coil around the spindle 18, as shown in FIG. spring 21
By rotating to the left against the elasticity of the ground yarn BY until it collides with the stopper 22, the ground yarn BY is transferred smoothly.

When the preparation for cutting is completed, the excitation of the electromagnet 17 is canceled by a signal from the electronic control circuit, and the brush 20 and the movable guide 23 are
As shown in FIG. 5, the handle thread rotates to the right around the support shaft 18 due to the stored elasticity of the coil spring 21.
The PY is pressed onto the fixed guide 16 with the brush 20 to temporarily hold it. Therefore, the cutter 7a of the circular cutter 7 and the fixed cutter 10 are connected to the pattern thread.
Cut PY. Then, the terminal of this pattern thread PY is
The fixed guide 16 and the brush 20 temporarily maintain tension between the yarn path 14a and the brush 20.

In this way, the present invention allows each yarn from the yarn path of the yarn feeding unit 11 and each pattern yarn unit 14 to be
BY and each pattern yarn PY are selectively selected and held by each knitting needle 1a of the knitting needle cylinder 1 to perform stockinette knitting.

[Effect of idea]

As described above, according to the present invention, the knitting needle cylinder 1 equipped with the knitting needles 1a is installed in a stationary member in a vertical direction so as to be rotatable, and the circular cutter 7 is mounted on the scissor stand 3 directly above the knitting needle cylinder 1. In a sock knitting machine that is mounted on a shaft so as to rotate together with the scissors holder 1, and is provided with a thread suction duct 9 and a fixed cutter 10 on the scissors holder 3, a holding frame is mounted on the scissors holder 3 beside the thread suction duct 9. 15, a fixed guide 16 is provided on the base 15a of the holding frame 15 extending outward from the scissors stand 3, an electromagnet 17 is vertically provided on the upper part 15a of the holding frame 15, and a lower part of the electromagnet 17 is provided. A brush holder 19 having a brush 20 is mounted on the horizontal shaft 18 so that it can be attracted by the electromagnet 17, and a spring is attached to the horizontal shaft 18 to separate the brush holder 19 from the iron core 17a of the electromagnet 17. 21, a movable guide 23 is provided on the brush holder 19 so as to surround the fixed guide 16 from the outside, and the stretch yarn is
When cutting PY, this stretch yarn PY is scooped up onto the fixed guide 16 by the movable guide 23 operated by the electromagnet 17, and then cut into the circular cutter 7.
Since the stretch yarn PY is temporarily pressed and held by the brush 20 before cutting with the fixed cutter 10, the cut stretch yarn PY can be held securely. Since the structure is simple, it has excellent effects such as being able to be incorporated into existing equipment.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing only the main parts of the device for holding the end of a stretch yarn according to the present invention, Fig. 2 is a sectional view of the same, and Fig. 3 is a part of the device for holding the end of the stretch yarn. FIGS. 4 and 5 are diagrams for explaining the action of the present invention, and FIG. 6 is a cross-sectional view of the already proposed stretch yarn end holding device. FIG. 7 is a plan view of the same as above. DESCRIPTION OF SYMBOLS 1... Knitting needle cylinder, 3... Scissors stand, 7... Circular cutter, 9... Yarn suction duct, 10... Fixed cutter, 15... Holding frame, 16... Fixed guide, 17... Electromagnet, 20... ...Brush, 23...
Movable guide.

Claims (1)

[Scope of utility model registration request] A knitting needle cylinder equipped with knitting needles is vertically mounted on a stationary member so as to be freely rotatable, a circular cutter is mounted on the scissors stand directly above the knitting needle cylinder so as to rotate together with the knitting needle cylinder, and the yarn is placed on this scissors stand. In a sock knitting machine equipped with a suction duct and a fixed cutter, a holding frame is provided on the scissor stand next to the yarn suction duct, and a fixed guide is provided at the base of the holding frame to extend outward from the scissor stand. An electromagnet is vertically disposed above the holding frame, a horizontal shaft is provided below the electromagnet, a brush holder having a brush is mounted on the horizontal shaft so that it can be attracted by the electromagnet, and the brush is A spring urges the holder away from the iron core of the electromagnet, a movable guide is provided on the brush holder so as to surround the fixed guide from the outside, and when the stretch yarn is cut, the stretch yarn is actuated by the electromagnet. The terminal of the stretch yarn is characterized in that the stretch yarn is temporarily pressed and held by the brush before being scooped onto the fixed guide by the movable guide and cut by the circular cutter and the fixed cutter. holding device.