JPH0368141B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a pattern yarn supply device in a circular knitting machine for knitting spiral patterns on socks, socks, pantyhose, etc., for example.

(Prior Art) A pattern yarn supply device in a circular knitting machine for knitting this type of spiral pattern that has already been proposed is constructed as shown in FIGS. 5 to 8 (Italian Patent No. 21064A/ 86).

That is, in FIGS. 5 to 8, the machine frame c is located outside the upper part of the knitting machine cylinder b equipped with the knitting needles a.
The latch guard d is installed horizontally,
The machine frame c is provided with a support frame body _c1 .
Further, to this support frame _c1 , a yarn guide member e supplies each yarn _f1 and pattern yarn _f2 to the knitting needles a via each yarn path member h and each pattern yarn path member i, which will be described later. It is set up so that In addition, the above support frame
In c ₁ , each pattern thread guide member i having each thread opening part g is rotatable coaxially with the spindle j, and also slides back and forth in the axial direction of the knitting machine cylinder b. Each thread guide member (i) has a thread opening (g) in contact with each stopper (k) and is urged downward by the elasticity of each coil spring (l). There is.

In particular, a first actuating piece i ₁ is formed by a rising piece in the middle of the pattern yarn guide member i, and this first actuating piece i ₁ has a first actuating piece i ₁ installed on the supporting frame body c 1 . A cam member n of the first pulse motor m is provided in contact with the first pulse motor m. Further, a second actuating piece _i2 having a trapezoidal shape is formed at the tail end of the pattern thread guide member i, and this second actuating piece _i2 has a second actuating piece _i2 installed on the supporting frame c1. A cam member p of the second pulse motor o is provided in contact therewith.

As shown in FIG. 8, a pattern knitting and knitting control device q into which a pattern knitting program is input is connected to each of the pulse motors m and o through a lead r. During pattern knitting, the knitting control device q is configured to energize the pulse motors m and o with a pulse signal according to a pattern knitting program to control the rotation of each of the pulse motors m and o.

Therefore, during pattern knitting, the pattern yarn supply device in the above-mentioned circular knitting machine operates based on the pulse signal according to the pattern knitting program from the pattern knitting and knitting control device q, as shown in FIG. By driving and controlling the first pulse motor m and the second pulse motor o, the pattern thread guide member i is directed in the longitudinal direction toward the axis of the knitting machine cylinder b against the elasticity of the coil spring l. By sliding up and down in the above direction, the pattern yarn f ₂ of each yarn opening g of this pattern yarn guide member i is supplied at a predetermined interval to the knitting needle a, and each of the yarn yarns is A spiral pattern is knitted in cooperation with the movement of the path member h.

That is, the pattern yarn supply device in the above-mentioned circular knitting machine distributes and supplies the pattern yarn f ₂ of the spiral pattern to the needle hook to the inside and outside of the needle hook by the needle selection action of the knitting needle a. When feeding the pattern yarn f ₂ of the spiral pattern inside the hook, each of the above-mentioned yarn openings g must be brought as close as possible to the needle hook, while on the other hand, when the pattern yarn f ₂ of the spiral pattern is returned to the non-feeding position, In this case, each thread opening part g is pulled up and away from the needle hook as much as possible.
In other words, the pattern thread guide member i is connected to the coil spring l.
The two first pulse motors m and the second
Using a pulse motor o, the pattern yarn f ₂ is slid back and forth in the axial direction of the knitting machine cylinder b against the elasticity of the coil spring l, and is raised and lowered in the vertical direction. It is starting to supply

(Problem to be Solved by the Invention) However, the pattern yarn supply device in the circular knitting machine described above uses the two first pulse motors m and the second pulse motor o to connect the pattern yarn path member i. Since the knitting machine cylinder b is configured to slide back and forth in the axial direction of the knitting machine cylinder b and operate at the same time as to move up and down in the vertical direction, the pattern knitting control device q Not only does the inputted pattern knitting program become complicated, but also each cam member n of the first pulse motor m and the second pulse motor o,
It becomes troublesome to assemble and adjust the pattern thread guide member i and the first pulse motor m and the second pulse motor o to the pattern thread guide member i, as shown in FIG. Since the pattern thread supply device for multiple stitches in a circular knitting machine is disposed at right angles to each other, not only is there a space limitation for the pattern yarn supply device for multi-way use in a circular knitting machine, but also the two first pulse motors m and the second pulse motor o It is difficult to provide it at low cost because it incorporates

The present invention has been made in view of the above-mentioned circumstances, and it is possible to orient the pattern thread guide member in the axial direction of the knitting machine cylinder b using a single electromagnet without using two pulse motors. It is an object of the present invention to provide a pattern thread supplying device which slides in the front-rear direction and operates in synchronized timing so as to move up and down in the vertical direction to supply pattern threads.

[Structure of the invention]

(Means for Solving the Problems and Their Effects) The present invention provides a circular knitting machine in which a latch guard plate is installed horizontally on a machine frame on the outside of the upper part of a knitting machine cylinder equipped with knitting needles. erected,
A yarn guide member having a stopper is attached to the upper part of this support rod, a support shaft is horizontally mounted in the middle of the support rod, and a plurality of ground yarn guide members and a three-pronged arm rod are rotated on this support shaft. An electromagnet is connected directly or indirectly to the first arm of the three-pronged arm rod, and a second arm of the three-pronged arm rod is configured to be locked to the stopper; The base of a pattern thread guide member for feeding yarn to the knitting needles is pivotally attached to the second arm rod by urging it downward so as to rotate around the support shaft, and the third arm of the three-pronged arm rod is pivotably attached to the second arm rod. a contact portion is formed with a gap in between so as to abut a part of the pattern thread guide member, and the pattern thread guide member is directed in the axial direction of the knitting machine cylinder using the only electromagnet. It is designed to slide in the front-rear direction and move up and down in the vertical direction in synchronized timing to supply pattern yarn.

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

1 to 4, reference numeral 1 denotes a well-known knitting machine cylinder in a circular knitting machine, and a number of knitting needles 2 are moved up and down by a cam mechanism (not shown) in an outer circumferential longitudinal groove of this knitting machine cylinder 1. It is provided so as to be able to slide freely. Further, a machine frame 3 is provided on the outside of the upper part of the knitting machine cylinder 1, and a latch guard plate 4 is horizontally provided on this machine frame 3. A support rod 5 is erected on the machine frame 3. Furthermore, a yarn guide ₆ for guiding the ground yarn and pattern yarn f2 is installed at an angle on the upper part of this support rod 5, and the base 6a of this yarn guide 6 is
A stopper 7 is provided with an adjusting screw. Furthermore, a support shaft 8 is horizontally mounted in the middle of the support rod 5, and this support shaft 8 includes a plurality of ground yarn guide members 9 and a plurality of ( In the figure, two (2) three-pronged arm rods 10 are rotatably mounted. The three-pronged arm rod 10 is composed of a first arm 10a, a second arm 10b, and a third arm 10c, and the second arm 10b of the three-pronged arm rod 10 and the yarn guide 6 are connected to each other. Between some of them,
A coil spring 11 is stretched across the shaft, and this coil spring 11 urges the three-pronged arm rod 10 to rotate to the left around the support shaft 8. Further, as shown in FIG. 2, an auxiliary plate 12 is attached to the outer wall of the support rod 5 in a hanging manner.
Each operating lever 13 is rotatably mounted on a pin shaft 14 at the lower part of the shaft. Furthermore, each end 13a of each operating lever 13 is connected to the fork portion of the first arm 10a of the three-pronged arm lever 10 by a pin 15, and each end 13b of each operating lever 13 is connected to the fork portion of the first arm 10a of the three-pronged arm lever 10. Each electromagnet 16 installed on the plate 12 is connected to each operating rod 16a by each connecting pin 17.
In addition, each electromagnet 16 is equipped with a control device (central processing unit, CPU) into which a pattern yarn knitting program is input.
18 is attached, and this control device 18 controls each of the electromagnets 16 based on the pattern yarn knitting program.
It is designed to operate ON and OFF. moreover,
The second arm portion 10b of the three-pronged arm rod 10 is locked to the stopper 7, and this stopper 7 prevents the three-pronged arm rod 10 from rotating to the left around the support shaft 8 by the elasticity of the coil spring 11. Location is regulated. Furthermore, in the middle of the second arm portion 10b of the three-pronged arm rod 10, a yarn opening portion 19 for supplying pattern yarn f ₂ to the knitting needles 2 is provided.
The base portion 19b of the plurality of handle thread guide members 19 having a
are pivotally connected by a pin 20, and the base portion 19b of each handle thread guide member 19 is formed in an arc shape with the support shaft 8 as the center. Moreover, each pattern thread guide member 19
A coil spring 21 is stretched between the middle part and the third arm part 10c of the three-pronged arm rod 10, and this coil spring 21 connects the part 19c of each of the pattern thread guide members 19 to the part 19c of the three-pronged arm rod 10. It is formed on the third arm portion 10c of the three-pronged arm rod 10 and urges the abutting portion 10d with a gap 〓C. That is, on the latch guard plate 4 directly below each of the pattern thread guide members 19, adjustment stops 22 made of adjusting screws are attached, and the corresponding portions 19c of each of the pattern thread guide members 19 are coil spring 2
1 is urged to abut against each of the abutment portions 10d with a distance C, and the position is regulated by each of the adjustment stops 22.

Hereinafter, the effects of the present invention will be explained.

Therefore, in FIG. 1, for example, when knitting a spiral pattern, when one of the electromagnets 16 is turned off by a signal from the control device 18 into which the pattern thread knitting program is input, this electromagnet 16 is turned off.
Since the operating lever 16a moves to the left, the operating lever 16a rotates the operating lever 13 to the right around the pin axis 14 via the pin 17. Then, one end 13a of this operating lever 13 pushes the first arm 10a of the three-pronged arm rod 10, so that the three-pronged arm rod 10
is rotated to the left around the support shaft 8 and the second arm portion 10b is brought into contact with the stopper 7, so that the yarn opening portion 19a of each of the pattern yarn guide members 19 pivotally connected to the three-pronged arm rod 10 is rotated to the left around the support shaft 8. Enter the hook of knitting needle 2,
As a result, the thread opening portion 1 of each pattern thread guide member 19 is
The pattern yarn f ₂ of 9a is supplied to the knitting needles 2, whereby the knitting needles 2 knit, for example, a spiral pattern pattern knit.

At this time, the part 19 of each pattern thread guide member 19
Although c is biased by the elasticity of the coil spring 21 to abut against each abutting portion 10d at a distance C, its position is regulated by each adjustment stopper 22.

Next, in FIG. 3, after pattern knitting is completed, when one of the electromagnets 16 is turned ON by a signal from the control device 18 into which the pattern yarn knitting program is input, the operating rod 16a of this electromagnet 16 moves to the right. The operating lever 16a rotates the operating lever 13 to the left around the pin shaft 14 via the pin 17. Then, the one end 13a of the operating lever 13 pushes the first arm 10a of the three-pronged arm 10, so the three-pronged arm 10 rotates to the right around the support shaft 8 and moves the third arm 10c. The contact portion 10d of the handle thread guide member 19
At the same time, the thread opening part 19a of the pattern thread guide member 19 pivotally connected to the three-pronged arm rod 10 retreats from the knitting needle 2. Furthermore, the contact portion 10d of the third arm portion 10c
By pushing the contact portion 19c against the elasticity of the coil spring 11, each of the handle thread guide members 19 rotates around the support shaft 8, as shown in FIG. Therefore, the pattern thread guide member 19
The supply of the pattern yarn f ₂ from the yarn opening portion 19a is stopped and a non-yam feeding state is entered.

That is, the electromagnet 16 according to the present invention slides the three-pronged arm rod 10 in the front-rear direction toward the axis of the knitting machine cylinder 1, and also slides the pattern thread guide member 19 in the front-rear direction via the operating lever 13. It is designed to operate at the same timing to move up and down in the direction to supply the pattern thread _f2 .

In addition, in the present invention, the three-pronged arm rod 10 is replaced with an electromagnet 1.
6, the handle thread guide member 19 is operated via the lever 13.
Although it has been explained that the knitting machine cylinder 1 slides back and forth in the axial direction of the knitting machine cylinder 1, and moves up and down in the vertical direction, the operation is performed at the same timing, but this does not change the gist of the present invention. For example, the design may be changed so that the three-pronged arm rod 10 is directly actuated by the electromagnet 16.

〔Effect of the invention〕

As described above, according to the present invention, in a circular knitting machine in which the latch guard plate 4 is installed horizontally on the machine frame 3 on the outside of the upper part of the cylinder 1 equipped with the knitting needles 2, the support rod 5 is attached to the machine frame 3. A yarn guide member 6 having a stopper 7 is attached to the upper part of the support rod 5, and a support shaft 8 is installed horizontally in the middle of the support rod 5. The thread guide member 9 and the three-pronged arm rod 10 are rotatably mounted, and the three-pronged arm rod 10
An electromagnet 16 is directly or indirectly connected to the first arm portion 10a of the three-pronged arm rod 10, and the second arm rod 10b of the three-pronged arm rod 10 is formed so as to be locked to the stopper 7. The base 19b of the pattern thread guide member 19 that feeds the yarn to the knitting needles 2 is urged downward so as to rotate around the support shaft 8, and is pivotally attached to the third arm 10c of the three-pronged arm rod 10. C so that the contact portion 10d is brought into contact with a part of the pattern thread guide member 19.
The only electromagnet 16 is used to slide the pattern thread guide member 19 back and forth in the direction of the axis of the knitting machine cylinder 1, and to synchronize the timing so that it moves up and down in the vertical direction. Therefore, not only can the pattern thread guide member 19
The control circuit for the pattern thread knitting program that adjusts the timing of the pattern thread guide member 1 is also simplified.
9 is operated by a link mechanism, it is easier to assemble and adjust than a cam mechanism, maintenance and inspection are easier, and since the entire device is constructed narrowly,
Since it is smaller and lighter and does not take up much space in a multi-way pattern yarn supply device, it has excellent effects such as being able to freely adopt the present invention.

[Brief explanation of drawings]

FIG. 1 is a side view showing the main parts of the pattern yarn supplying device of the present invention, and FIG. 2 is a chain line A-- in FIG. 1.
A cross-sectional view along line A, FIGS. 3 and 4 are diagrams for explaining the action of the present invention, FIG. 5 is a plan view showing a pattern yarn supply device in a conventional circular knitting machine, and FIG.
The figure is an enlarged vertical sectional view taken along the chain line B-B in FIG. 5, FIG. 7 is a cross-sectional view showing a conventional pattern thread supply device, and FIG. FIG. 1... Knitting machine cylinder, 2... Knitting needle, 3... Machine frame, 4... Latch guard plate, 5... Support rod,
7... Stopper, 8... Support shaft, 9... Ground thread guide member, 10... Three-pronged arm rod, 10a... First arm portion, 1
0b...Second arm part, 10c...Third arm part, 10d...
...Abutment part, 13...Operating lever, 14...Pin shaft,
16...Electromagnet, 19...Pattern thread guide member.

Claims (1)

[Claims] 1. In a circular knitting machine in which a latch guard is installed horizontally on the machine frame outside the upper part of a knitting machine cylinder equipped with knitting needles, a support rod is provided upright on the machine frame, and the yarn guide member has a stopper on the upper part of the support rod. A support shaft is installed horizontally in the middle of the support rod, a plurality of thread guide members and a three-pronged arm rod are rotatably installed on this support shaft, and the first part of the three-pronged arm rod is An electromagnet is directly or indirectly connected to the first arm part, a second arm rod of the three-pronged arm rod is formed to be locked to the stopper, and a handle is provided for feeding yarn to the knitting needle to the second arm rod. The base of the thread guide member is urged downward so as to rotate around the support shaft and pivoted, and the abutting portion is attached to the third arm of the three-pronged arm rod as part of the handle thread guide member. A pattern thread supply device characterized in that it is formed with a gap so as to come into contact with the pattern thread supply device.