JPH0364622B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a knotted net knitting method and apparatus.

Knotted nets are generally knitted with single or double knotted knots, but when monofilament yarn with a slippery surface is used, slippage is likely to occur, and strong knotted knitting methods are required. It is requested.

Therefore, in recent years, in order to strengthen the knots, a knitting method has been developed in which the upper hook (rolling hook) is rotated left and right many times to form many loops of weft and warp yarns. The mechanism and operation became complicated, and the rotational speed of the knitting machine decreased, making it impossible to efficiently manufacture high-quality nets.

Therefore, the present invention is directed to a method and apparatus for knitting knotted nets that can knit high-quality nets with strong knots with high efficiency, the structure of the knitting machine is simple, and the knitting speed is sufficiently high. The purpose is to provide

The knitting method of this invention involves bringing the warp into contact with a rotatable upper hook, rotating it 1.5 times to the left or right to wrap the warp around the vertical axis above the thread hook of the upper hook, and then lifting the weft yarn. In this state, while hooking the weft threads on the upper hook, rotate the upper hook 0.5 rotation in the same direction as above, and when rotating the upper hook, pass the tip of the upper hook so that the tip of the upper hook does not get caught in the yarn foot on the net side of the warp threads. After removing one loop, pull the weft warp threads below the upper hook, and with this upper hook in place or with the upper hook turned an additional 0.5 rotation, pull out the warp threads through the warp and weft loop formed at the lower end of the upper hook. The gist is to tie the knot by passing the weft thread through it.

Furthermore, the knitting net device of the present invention has a thread swinger that moves vertically, horizontally, forwards and backwards while guiding the warp threads, an upper hook that hooks the warp threads and weft threads to rotate and swing back and forth, and a plurality of hooks that are installed below the upper hook. a comb plate having notches at equal intervals to the weft threads; a lifting plate that is movable up and down to lift the weft threads above the comb plate; In a knitting device equipped with a hook,
The gist is that a locking tool or locking groove is provided to lock the warp threads wound around the vertical shaft of the upper hook.

Embodiments of the present invention will be described below based on the drawings.

FIGS. 1A and 1B show cross-sectional views of an upper hook 1 of a knitting net device, and this upper hook 1 is provided with a warp locking device 11 on its vertical shaft. The locking tool 11 is rotatably supported in a hollow part provided in the vertical shaft of the upper hook 1, and a ring body 14 is fitted into the upper part of the upper hook 1 by a link rod 13 so as to be slidable up and down. When lowered as shown in FIG. 1A, the tip of the locking tool 11 protrudes from the notch 12 and holds the warp threads wound around the vertical shaft of the upper hook 1.

A gear 15 is fixed to the upper end of the upper hook 1, and is connected to a rotation drive mechanism (not shown). A coil spring 16 is fitted between the ring body 14 and the gear 15 to urge the ring body 14 downward, and the ring body 14 is allowed to rotate and lowered to allow the locking tool 11 to protrude. The actuating plate 17 is engaged.

FIG. 2 shows a plan view of the comb plate 2, in which the notches 21 between the teeth of the comb plate 2 are provided deeper than usual at the same intervals as the plurality of weft threads 6, and on the comb plate 2, the comb plate A weft thread holding plate 3 that temporarily holds the weft thread that has entered the cut portion 21 of No. 2 is disposed so as to be slidable left and right. The weft thread holding plate 3 is formed with hook-shaped parts 31 that hold each weft thread in the notches 21 at the same intervals as the weft threads 6, and the weft thread holding plate 3 moves left and right over the comb plate 2 by a drive mechanism (not shown). It slides back and forth at a predetermined timing.

In FIG. 3A showing a schematic diagram of the main parts of the knitting net device, reference numeral 4 denotes a lifting plate disposed on the right side of the comb plate 2 so as to move up and down at a predetermined timing.
It operates to lift up the weft thread 6 that has been pulled out.

Reference numeral 5 denotes a thread swinger that guides the warp threads 7 pulled out from a bobbin (not shown) and swings the threads in a predetermined pattern vertically, horizontally, forwards and backwards. weft thread 6
The configuration of the warp yarns 7 is similar to that of a known knitting machine.

Next, the knitting method will be explained with reference to the knitting process diagrams shown in FIGS. 3A to 3L.

First, when the preparation for knotting is completed as shown in Fig. 3A, the process moves to Fig. B, where the thread swinger 5 rises and lifts the warp threads 7, and the upper hook 1 with the locking tool 11 protruded. The upper hook 1 is rotated 1.5 turns to the left (in the direction of the arrow) with the warp threads 7 diagonally in contact with the sides and the warp threads hooked to the locking tool 11.

Then, as shown in figure C, the warp threads 7 are attached to the upper hook 1.
The locking tool 11 wraps the vertical shaft of the upper hook 1 by 1.5 turns, and then the lifting plate 4 rises and the weft thread 6
lift up. Here, the weft thread holding plate 3 on the comb plate 2 moves to the left side in FIG.
The cut portion 21 is in a closed state, and the distance between the warp threads 7 and the weft threads is widened by the weft thread holding plate 3.

Next, proceed to figure D, turn the tip 0.5 further to the left with the tip tilted in the boat-shaped direction, and hook the weft thread 6 with the tip. At this time, the distance between the weft threads 6 and the warp threads 7 on the comb plate 2 is kept constant by the action of the weft thread holding plate 3, so that only the weft threads 6 can be hooked on the tip when the upper hook 1 is turned half a turn. can.

Next, proceeding to figure E, the thread swinger 5 is lowered and the tip of the inclined upper hook 1 is returned to its original straight position, and then the locking tool 11 of the upper hook 1 is moved to the first position as shown in figure F. As shown in Figure B, the ring body 1 is
4. Rotate downward via the link rod 13 to draw the protruding tip into the upper hook 1.

Then, as the thread swinger 5 descends, one loop of the wound part of the warp thread 7 comes off, and the warp thread 7 with only one loop is removed.
has slipped off the vertical shaft of the upper hook 1, and the lifting plate 4 has moved to the comb plate 2.
As the weft thread holding plate 3 moves to the right in FIG. 2 and opens the notch 21 of the comb plate 2, the weft threads 6 and warp threads 7 change from the state shown in Fig. F to the state shown in Fig. G. In the state shown in , the tips of the upper hooks 1 each hook one loop, and the warp yarns 7 entwine and surround the weft yarns 6 below the upper hooks 1.

Next, proceeding to figure H, after rotating the upper hook 1 by another 0.5 rotation, the lower hook 9 is inserted into the groove at the lower end of the upper hook 1, and the warp threads 7 are pulled to the tip of the lower hook 9, as shown in figure I. By hanging and pulling out the warp thread 7, thread the warp thread 7 through the warp and weft loop (J
), the drawn warp threads 7 are then passed through the weft threads.

That is, with the boat shape 8 passing through the loop of the warp thread 7 that has been pulled out, the warp thread 7 passed through the loop by the tension of the warp thread 7 is returned through the lower end groove of the upper hook 1, and at this time, the weft thread 6 is passed through the lower end groove, that is, the two Pull it into the loop and bend it to make the state shown in figure K.

Then, as shown in Figure L, the upper hook 1 is tilted, the loops of the warp threads 7 and the weft threads 6 are removed from the tip thereof, and the knot is completed at one location.

The nodules created in this way are shown in Figure 4 A and B.
(showing loose knots), warp thread 7
Each two loops made by the warp and weft yarns 6 are effectively intertwined to form a strong knot, and the warp and weft yarns do not twist at all, and by repeating the above-mentioned knitting process, A large number of knots are created by the warp and weft yarns, and a well-formed, high-quality net is knitted with high efficiency.

In the knitting process shown in Fig. D above, the weft thread holding plate 3 is used to widen the distance between the weft threads 6 and the warp threads 7 on the comb plate 2, and when the upper hook 1 rotates to the left, only the weft threads 6 are attached to the upper hook. However, as shown in Figure _D1 , by tilting the upper hook 1 greatly and rotating it to the left, you can hook only the weft thread 6 without using the weft thread holding plate 3, and loop the warp threads 7. You can also remove one.

In addition, in the above embodiment, the upper hook 1 is rotated 0.5 times to the left from the figure G to the figure H, and in this state, the lower hook 9 is inserted into the loop of the warp threads 7 and the weft threads 6,
The warp threads 7 were pulled out from there, but as shown in Figure _G1 , the lower hook 9 was inserted into the loop without rotating the upper hook 1, and after the warp threads 7 were pulled out from inside, the loops of the warp threads 7 were It is also possible to pass the weft thread 6 through it to obtain the state shown in Fig. _K1 , and then remove the upper hook 1 as shown in Fig _. L1 to tighten the stitches. The knot in this method looks like Figure 4C (relaxed state),
In this case as well, the knot can be made stronger than the conventional knot.

Furthermore, in the above embodiment, a locking tool was provided on the vertical shaft of the upper hook 1 to lock the wound warp yarns, but as shown in FIG. 5A, instead of this locking tool, the upper hook 1a is A locking groove 1b for winding the warp threads 7 around the vertical shaft is provided, and as shown in FIGS. 5B and C, the upper hook 1
By rotating a by 1.5 turns, the warp threads 7 are wound and locked in this locking groove 1b, and then the upper hook 1a
It is also possible to remove only one loop of the wound warp yarn 7 when the weft yarn 6 is hooked at the tip by rotating the weft yarn 6 by 0.5 rotation in the direction of the arrow.

As explained above, according to the knitting method and device of the present invention, two loops of both the warp and weft can be effectively entwined by the relatively simple rotation of the upper hook in only one direction and the operation of the lifting plate, etc. It is possible to make strong knots that do not cause misalignment, and to produce high-quality nets with high efficiency, the structure of the knitting device is not so complicated, and the rotation speed of the machine is the same as before. This has the effect of allowing the use of

[Brief explanation of drawings]

The figures show embodiments of the present invention, in which Figures 1A and B are cross-sectional views of the upper hook, Figure 2 is a plan view of the comb plate and weft holding plate, Figures 3A to L are illustrations of the knitting process; Figure 3
D ₁ , G ₁ , K ₁ , L ₁ are explanatory diagrams of the knitting process showing other embodiments, Figures 4A and C are front views of the knots in the loosened state, and Figure 4B is the diagram of Figure 4A. Back view, Figure 5 A, C
5 is a front view of the upper hook of another embodiment, and FIG. 5B is a state diagram of the same knitting net. 1, 1a... Upper hook, 1b... Locking groove, 2... Comb plate, 3... Weft thread holding plate, 4... Lifting plate, 5...
Thread swing, 6... Weft thread, 7... Warp thread, 9... Bottom hook, 11... Locking tool.

Claims (1)

[Claims] 1. Raise the thread swinger to bring the warp into contact with the rotatable upper hook, turn it 1.5 turns to the left or right to wrap the warp around the vertical shaft in the middle of the upper hook, and then lift the weft thread. In this state, hook the weft thread on the upper hook and rotate the upper hook by 0.5 rotation in the same direction as above, and when rotating the upper hook, pass the tip of the upper hook so that it does not get caught in the yarn foot on the net fabric side of the warp. After removing one loop of the warp, pull the weft and warp threads below the upper hook, and with the upper hook in place or with the upper hook turned an additional 0.5 rotation, twist the warp threads into the warp and weft loop formed at the lower end of the upper hook. A knotted net knitting method characterized by pulling out and passing the weft threads. 2. A thread swinger that moves vertically, horizontally, forwards and backwards while guiding the warp threads, an upper hook that hooks the warp threads and weft threads to rotate and swing back and forth, and cuts that are installed below the upper hook and are spaced at equal intervals to a plurality of weft threads. A knitting net comprising: a comb plate having a comb plate; a lifting plate disposed above the comb plate so as to be movable up and down so as to lift the weft yarn; and a lower hook for pulling out the warp yarn from a loop of the warp yarn and the weft yarn. A knitting net device characterized in that the vertical shaft of the upper hook is provided with a locking tool or a locking groove for locking the warp threads wound around the vertical shaft of the upper hook.