JPS6317939B2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application: The present invention knits the ground part with knitting needles on the cylinder side, and arranges needles with cutting blades on the dial side.
Opposed to this, sinkers are arranged on the upper part of the outer periphery of the cylinder, and by the operation of these sinkers, a loop pile is formed, and the pile is cut to knit an effective cut pile fabric without knitting pile yarn on the back side. Regarding the circular knitting machine that can be used.

Conventional technology: Conventionally, in order to obtain cut pile fabric from weft knitted pile fabric, a loop pile fabric is first knitted and a portion of the loop is sheared using a shearing machine, which reduces the amount of yarn loss due to cutting. This is undesirable as it increases the number of materials and leads to waste of materials.

Some knitting machines that knit pile cuts of cut pile knitted fabrics while knitting them have been partially disclosed as prior art. For example, Jikosho 2-6065
No. 52-1162, known by its location. These conventional knitting machines that cut pile loops while knitting generally have knife-equipped needles on the needle barrel side and knitting needles on the dial side. A pile loop is pulled out and formed using a knife-equipped needle, and this loop is cut. In knitted fabrics using this method, the pile yarn that serves as the splicing yarn is knitted without being restricted to the ground yarn, so the pile yarn is knitted around the back side, making it inconvenient for the fabric because it cannot be knitted in a constant state. There are many things. That is, unless the ground thread and the pile thread are of the same color, if a large amount of ground thread appears on the pile forming side, there will be problems such as poor finish quality. In addition, when cutting pile loops, if the relationship between the knife needle and the loop is not properly adjusted, for example, the fixed loop holding method, such as the former in the prior art, cannot be used to cut the knitted fabric on knitting machines that are becoming faster. This is a problem because an irregular external force acts on it.

Purpose of the invention: The present invention solves these problems, and the pile yarn to be plated is located on the pile forming side,
The base part can be knitted into the ground part to prevent the pile yarn from being knitted on the back side, and at the same time, a pile loop can be knitted and loop cut can be performed to efficiently obtain a cut pile knitted fabric with an excellent texture. The object of the present invention is to provide a circular knitting machine with a simple configuration.

Structure of the invention: In the present invention, a knitting needle with a latch is disposed on the needle barrel, a hook needle with a cutting edge is disposed on the dial, and the hook needle is disposed on the annular support disposed outside the upper part of the needle barrel. A sinker whose tip is slid onto the top of the needle barrel with a relatively wide distance from the bottom and a long protruding piece formed at the top of the throat, the throat of which is located above the top of the needle barrel. In combination with a cam mechanism, the sinker retreats from before the ground yarn feeding position, moves forward before the knitting by the knitting needles is finished, and thereafter moves while holding the base of the knitting loop, An operating cam is installed on the outside of the knitting needle, which allows the knitting needle to first receive the pile yarn and then receive the ground yarn to knit.The dial has a hook needle with a cutting blade that accepts only the pile yarn into the hook and adjusts the knitting position of the knitting needle. A cam mechanism is arranged so that the pile loop is moved back, then displaced in an appropriate section, moved forward at the pile cut position, and then immediately retreated. The circular knitting machine for cut pile knitted fabrics has a structure in which a horizontal rotatable cutting auxiliary plate is disposed close to the lower edge.

According to the knitting machine of the present invention, the base fabric portion is knitted by the knitting needles on the needle barrel side, and at the same time, the pile yarn is formed into pile loops by the hook needles with cutting blades on the dial side. When the sinker assists in knitting, the pile yarn is knitted on the front side of the ground yarn, and the cut pile is wound on the inside.

Embodiment and operation: Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.As shown in FIGS. 1 to 7, knitting needles with a latch are provided on the outer periphery of the needle barrel 10 in a circular knitting machine by a well-known means. 11 are arranged in an array, and the knitting needles 11 are moved up and down by a needle operating cam mechanism (not shown) disposed on a frame outside the needle barrel. A sinker support ring 13 is disposed on the outer periphery of the upper part of the needle barrel 10, and the sinker 20 is arranged to be interposed between each of the knitting needles 11, extending from a groove on the support ring 13 to a groove provided in the upper part of the needle barrel. and support ring 13
A sinker cam 15 attached to a fixed ring 14 provided on the upper part of the sinker 20 is used to move the sinker 20 forward or backward at a desired position. The throat 21 of the sinker is positioned slightly above the top surface of the needle barrel 10. Furthermore, needle tube 1
A dial 17 disposed above 0 has a hook 31 at its tip and a cutting blade 32 at a position opposite to the hook 31.
A hook needle 30 is provided to form and cut a pile loop with a mark, and the hook needle 30 is moved forward and backward in a required order by a cam attached to a fixed plate provided on the upper surface of the dial 17.

The knitting needles 11 arranged in the needle barrel 10, the hook needles 30 with cutting blades arranged in the dial 17, and the sinkers 2
The operation of each operation cam with 0 is made to draw an operation locus as shown in FIG.
A yarn feeder 18 for the pile yarn ^Y1 is provided at a position where the pile yarn Y1 rises to the top and enters the first descending section.
The hook portion 11' of the knitting needle 11 scoops up the supplied pile yarn ^Y1 (see Fig. 4), draws the pile yarn into the hook portion of the needle, and moves it for the required distance. On the other hand, the hook needle 30 on the dial 17 side advances outward from the dial 17 in response to the rise of the knitting needle 11, moves as it is for the required distance, and is grounded at a position displaced by an appropriate distance from the yarn feeding position a of the pile yarn. thread
Supply Y ² to the knitting needles 11 from the yarn feeder 19,
The knitting needle 11 is scooped up by the hook 11' and is hooked on the hook of the descending knitting needle 11 and the hook needle 30 on the dial side to form a pile loop L. Then, as the knitting needle 11 descends, the hook needle 3
0 will also move back and hold a portion of the pile loop within its hook to remain in place.

The sinker 2
As is clear from the figure showing the above-mentioned knitting mode, while the knitting needles 11 and hook needles 30 move upward and forward, they maintain a state of moving forward toward the center of the machine body, and the base of the previously knitted knitting loop is The throat part 21 presses and holds the knitting needle 1.
The sinker operation cam 15 starts moving backward just before the ground yarn Y1 moves to the yarn feeding section of the ground yarn ^Y2 , moves forward again at the position where the knitting operation is performed, and after the knitting is completed, causes the sinker operating cam 15 to press the knitting section. It turns and works.

Pile yarn Y ¹ and ground yarn Y ² are thus knitted.
As mentioned above, hook 1 of first knitting needle 11
1' receives pile yarn Y ¹ , dial 17
When the ground yarn Y 2 is received by the hook portion 31 of the side hook 30 and reaches the ground yarn feeding portion where the knitting needle 11 descends, the ground yarn Y ² is received by the hook 11′ portion of the knitting needle 11. For the pile yarn Y ¹ received in section 11', the ground yarn
Y ² will be received on the outside, and when the knitting needle 11 descends to the lowest position and knocks over the previously formed loop, the hook needle 30
When the pile loop L formed by receiving the inside of the hook 31 is in a tensioned state, the dial 17 of the hook 30
Since the pile loop tends to be shifted inward from the knitting position by retreating to the inside, the pile yarn Y ¹ drawn into the hook 11' of the knitting needle 11 is pulled inward, and the ground yarn Y ² are pulled down and knitted in line with the outside. In the knitted part, stitches made of ground yarn are formed on the outside, and stitches made of pile yarn are formed on the inside.

In addition, in this knitting process, especially the pile yarn
For the ^Y1 yarn feeding section, for example, the hook needle 30 is selected every other knitting needle 11 to receive the pile yarn into the hook, in other words, it skips one stitch at a time in each yarn feeding section. The portion of the pile yarn ^Y1 that is received and pulled down by the hooks 11' of all the knitting needles 11 that does not form a pile loop L with the hook needle 30 is scooped out by the protruding piece 22 of the sinker 20 so as to form a pile loop. A very small loop is formed at the knitting base to prevent the adjacent pile loop base from shifting, which also helps to prevent the pile from coming off after loop cutting, which will be described later. The pile threads that serve as a linking layer are used to move the knitting needles 11 and 11 until the sinker 20 moves back and reaches the next knitting position.
When the knitting loop climbs over the latch, it helps to prevent the parallel relationship with the ground yarn Y ² from being broken, and as a result, the pile yarn and the ground yarn are knitted separately on the front and back sides at the knitting base. It performs a useful function. Of course, this cooperates with the effective action of the throat portion 21 of the sinker 20 to press down on the knitting base.

The sinker 20 is then moved to the position where the pile loop L is maintained in the formed state and moved by an appropriate section.
A rotary cut auxiliary plate 25 of an appropriate thickness with a thin outer periphery is supported by the fixed ring 14 located above the support ring 13 via a support 26, and the tip thereof is formed so as to gradually approach the dial 17. , the hook needle 30 is fixed close to its lower edge at a level that does not hinder movement, and the pile loop L is connected to the knitting needle 11 and the hook needle 30.
When the hook 30 moves forward to the attachment position of the cutting auxiliary plate 25, the pile loop L in tension is removed from the hook of the needle by the outer periphery of the cutting auxiliary plate 25, that is, the pile loop L is held at its current position, and when only the hook 30 advances and the loop L comes into contact with the cutting blade 32 provided at a position opposite to the hook 31, the holding force of the pile loop L by the rotating cutting auxiliary plate 25 and the hook needle 30
Due to the linear force of the pile loop L, the cutting edge 32
(See Figure 7). In this way, the process of sequentially knitting pile loops on one side and cutting them is performed continuously by each of the above-mentioned knitting means configured to correspond to the yarn feeding sections provided at several locations on the knitting machine, and the pile loops are cut. The pile is located on the inside and is wound on a winder by known means.

In addition, to set the pile length, move the dial up and down on its support shaft.
The synchronous rotation of the dial and the needle barrel is performed by known means.

Effects of the invention: As described above, according to the present invention, a hook needle with a cutting edge is arranged on the dial, knitting operation is performed by the knitting needle arranged in the needle tube, and the sinker and the hook needle are operated so as to cooperate with this knitting operation. By this, especially when receiving the pile yarn and ground yarn into the hook part of the knitting needle,
The pile yarn is scooped up to the center side of the needle tube (front side of the knitted fabric), and the sinker holds down the base of the knitting loop, and the protruding piece scoops up the pile yarn to prevent the base of the pile loop from shifting. A pile knitted fabric can be formed by knitting the pile yarn and the pile yarn toward the pile forming side, so the resulting knitted fabric can be easily finished in the same color tone on the pile forming side, and the horizontal cutting edge Through the cooperation of the attached hook needle and the cutting auxiliary plate that rotates horizontally just below it, the pile loops are cut effortlessly and accurately, making them beautiful without waste, and making effective use of the yarn regardless of the knitting density. make use of,
This made it possible to obtain high-quality napped knitted fabrics.

[Brief explanation of the drawing]

The drawings show an embodiment of the circular knitting machine of the present invention, in which Fig. 1 is a longitudinal sectional view of the main part of knitting, Fig. 2 is a plan view, and Fig. 3 shows the knitting mode of each needle and sinker. Fig. 4 is the 4-4 view of Fig. 2, Fig. 5 is the operation diagram of
The figure is a 5-5 view of Fig. 2, and Fig. 6 is a 6-5 view of Fig. 2.
6 and 7 are views taken from 7-7 in FIG. 2. 10... Needle tube, 11... Knitting needle, 11... Knitting needle hook, 13... Sinker support ring, 14... Fixed ring, 17... Dial, 18, 19... Yarn feeder,
20...sinker, 21...throat, 22...
Projection piece, 25...Cut auxiliary plate, 30...Hook needle,
31... Hook, 32... Cutting blade, Y ¹ ... Pile thread, Y ² ... Ground thread, L... Pile loop.

Claims (1)

[Claims] 1 A knitting needle with a latch is arranged in the needle barrel, and a hook needle with a cutting edge is arranged in the dial, and an annular support disposed on the outside of the upper part of the needle barrel has a relatively wide gap with the lower side of the hook needle. A sinker whose tip is slidably fitted onto the top of the needle barrel and a long protruding piece is formed at the upper part of the throat is arranged such that the throat portion is located above the top surface of the needle barrel, and the sinker is In combination with a cam mechanism that moves backwards from before the ground yarn feeding position, moves forward before the knitting needles finish knitting, and then moves while holding the base of the knitting loop, the knitting needles are placed on the outside of the needle barrel. An operation cam is installed on the dial that accepts the yarn, then accepts the ground yarn, and performs the knitting operation, and the dial has a hook with a cutting blade that accepts only the pile yarn into the hook, moves back at the knitting position of the knitting needle, and then moves as it is for an appropriate section. A cam mechanism is disposed so as to move forward at the pile cut position and then immediately retreat, and at the pile loop cutting position, a cam mechanism is provided that rotates horizontally close to the lower edge of the hook needle on the dial side, parallel to the path of travel of the hook needle on the dial side. A circular knitting machine for cut pile knitting fabric, characterized by being equipped with a freely rotating cut auxiliary plate.