JPS6153455B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a knitting method for a knitting machine and a double winding hook used in the method.

In the winding hook of a conventional knitting machine, the winding hook is rotated to wind the weft thread around the winding hook, and then the winding hook is rotated in the opposite direction to prevent the wound weft thread from coming off the winding hook. Requires weft thread slip-off prevention device. In addition, this device occupies a large space on the boat-shaped side of the knitting machine, reducing the workability of the preparation work. Furthermore, in the conventional knitting method using a winding hook, in which both the weft and warp yarns are wound around a single winding hook, the winding hook is tilted in the final step of one cycle of the knitting process. When removing the weft and warp threads from the winding hook and tightening the threads at the same time, the weft and warp threads are removed from the winding hook at the same time and the threads are not tightened sufficiently.
Rings remain in the formed nodules, creating so-called "chiyochinme", which has the disadvantage of significantly reducing the performance of the net.Furthermore, with conventional hook hooks, it is impossible to knit a net that does not completely shift the mesh. Ta.

In view of the above, this invention is capable of preventing the weft yarn from coming off with the winding hook itself, making it unnecessary to have a device for preventing yarn coming off of the knitting machine, and furthermore, it is possible to securely tighten the weft thread, and it has an advantage of not having loose threads. An object of the present invention is to provide a method for knitting a net that can be knitted using a woven net, and a double winding hook for use in the method.

In order to achieve the above object, the first invention
A double winding hook is used, which has an upper winding hook and a lower winding hook that are rotatably supported concentrically and movable in the axial direction, and each hook portion faces in the same direction and closely overlaps each other. In this method, the weft thread is wound around the hook of the upper hook in a lowered state, and then the upper hook is raised relative to the lower hook, the warp yarn is wound around the hook of the lower hook, and the warp yarn is wound around the hook of the lower hook. By rotating the double hook, the weft is removed from the upper hook, the weft is wound around the warp, the weft is again wound around the hook of the upper hook, and then pulled out with the lower hook into the warp loop. It is configured to pass the weft threads through, tilt the double winding hook, and remove the warp threads from the hook portion of the lower winding hook before the weft threads.

Further, the second invention has an upper winding hook and a lower winding hook that are rotatably supported concentrically and movable in the axial direction, and have respective hook portions facing in the same direction and approaching each other and overlapping each other. A method of knitting a net using a double hook, in which the weft and warp threads are wound around the hook of the lower hook, the weft threads are once removed from the hook of the lower hook, and then wound around the warp. Wrap the weft thread around the hook of the lower hook again, and with the weft and warp threads wrapped around the hook of the lower hook, overlap the hook of the upper hook with the hook of the lower hook, and pull out with the lower hook. After passing the weft yarn through the warp loop, tilt the double winding hook to gradually separate the hook of the upper winding hook from the hook of the lower winding hook, and pass one of the weft and warp threads to the lower winding hook before the other. It is configured to be removed from the hook of the

Further, in the double winding hook of the third invention, the upper winding hook and the lower winding hook are rotatably supported around a common predetermined axis, and one of the two winding hooks is supported on the shaft. The other winding hook is arranged at a predetermined position in the axial direction and is formed to be able to reciprocate with a predetermined stroke in the axial direction, and the hook portions of both winding hooks can face the same direction and overlap each other closely. It is composed of

The configuration of the present invention will be explained below with reference to the illustrated embodiments. In Figures 1 and 2, lower hook 1
consists of a hollow shaft 2, a rectangular plate-shaped arm portion 3 connected eccentrically to the lower end of the hollow shaft 2, and a hook portion 4 protruding from the lower end of the arm portion 3. A groove 5 is carved on the lower surface, and arm portions 3 are formed on both sides of the hook portion 4.
A sleeve portion 6 formed flush with the side protrudes. The upper winding hook 7 has a shaft 8 that penetrates the hollow shaft 2 and is rotatably and slidably connected to each other, a rectangular plate-shaped arm portion 9 connected to the lower end of this shaft 8 and parallel to the arm portion 3, and this arm portion 9. It consists of a hook part 10 protruding from the lower end of the arm part 9. The hook part 10 faces in the same direction as the hook part 4 of the lower hook, and a groove 11 is carved on the lower surface, and when the upper hook 7 is lowered, the groove 11 It is formed so that the hook portion 4 of the lower winding hook fits inside. Sleeve parts 12 are formed on both sides of the hook part 10, and when the upper hook 7 is lowered, the sleeve parts 12 face the sleeve part 6 of the lower hook, and there is a predetermined gap S between both sleeve parts. It is formed like this. A lower guide part 13 and an upper guide part 14 that slide along both left and right edges of the arm part 3 of the lower hook 12 are protruded above the sleeve part 12, and the upper hook 7 is the same as the lower hook 1. It is designed to rotate at high speed.

The hollow shaft 2 is pivotally supported by the block 15.
A gear 16 fixed to the gear meshes with a rack 17, and the rack 17 is interlocked with a cam means (not shown).
6 is rotated according to a predetermined program, and this program is repeated as one cycle to form one nodule. It is formed so that it can be tilted by a predetermined angle in the direction of arrow A from the posture.

Further, a compression coil spring 1 is installed between the hollow shaft 2 and a set collar 18 fixed to the shaft 8 at the upper part of the shaft 8.
A cam mechanism (not shown) is connected to the upper end of the shaft 8 to raise and lower the upper hook 7 in synchronization with the movement of the rack 17. It is composed of

Next, an embodiment of the method of knitting a net using a double winding hook according to the present invention will be described. In FIGS. 3 and 4, 20 is a weft, 21 is a warp, 22 is a weft push-up plate, 23 is a warp swing, 24 is a comb, and 25 is a guide plate for the net. The figure shows the netting machine as viewed from the left side, the circle at the top indicates the rotation angle and rotation direction of the hook as seen from above, and the radial arrow indicates the direction of the hook.

Embodiment of the first invention (FIG. 3) _A1 step (FIG. 3A) The weft thread lifting plate 22 is raised in a state in which the hook portion 10 is lowered and faces toward you (the front side of the paper in the figure).

Step B ₁ (Fig. 3B) After rotating the hook portion 10 and the hook portion 4 by 1/2 turn counterclockwise, the weft thread lifting plate 22 is lowered and the weft thread 20 is lowered.
Wrap it around the hook part 10.

Step C ₁ (Fig. 3 C) Raise the hook part 10 while further turning the hook part 10 and the hook part 4 counterclockwise by 1/2, and remove the weft thread loop 20.
a, and the warp swinger 23 is raised.

Step D ₁ (Fig. 3D) The hook portions 10 and 4 are rotated 1/2 clockwise to wind the warp threads 21 around the hook portions 4, and then the warp thread swinger 23 is lowered.

Step E ₁ (Fig. 3 E) Lower the hook 10, rotate the hook 10 and the hook 4 1/2 turn clockwise to remove the weft loop 20a from the hook 10, and connect the weft 20 to the warp 21. Wrap it around.

Step _F1 (FIG. 3 F) After the hook portions 10 and 4 are rotated 11/2 times counterclockwise, the weft thread lifting plate 22 is raised.

_G1 process (Fig. 3 G) After the hook portion 10 and the hook portion 4 are rotated 1/2 clockwise to wind the weft thread 20 around the hook portion 10, the weft thread push-up plate 22 is lowered.

Step _H1 (Fig. 3 H) Raise the hook part 10 while rotating the hook part 10 and the hook part 4 by 3/4 rotation counterclockwise.

Step _I1 (Fig. 3 I) A warp yarn loop 21a is formed using a lower hook (not shown), and the weft yarn 20 is passed through this loop 21a.

J ₁ process (Fig. 3 J) After pulling the warp yarn 21 to eliminate the warp yarn loop 21a and simultaneously forming the weft yarn loop 20b, the upper winding hook 7 and the lower winding hook 1 are tilted in the direction of arrow A around the tilting shaft 26. . At this time, the warp threads 21 come off the hook part 4 first, and then the weft threads 20 come off the hook part 10.
At the same time, it is tightened by a stitch tightening mechanism (not shown), completing one cycle of the process for forming one knot in the knitted net. Through this knitting process, the knot shown in FIG. 3K is formed. Thereafter, the state shown in FIG. 3A occurs again, and this cycle is repeated thereafter. In addition, in the above description, when the hook part 10 is lowered, the thread wound around the hook part 4 is present in the gap S.

Embodiment of the second invention (FIG. 4) A _2nd step (FIG. 4A) The hook portion 10 is raised, and the weft thread lifting plate 22 is raised with the hook portion 10 and the hook portion 4 facing forward.

Step B ₂ (Fig. 4B) After rotating the hook portion 10 and the hook portion 4 by 1/2 in the counterclockwise direction, the weft yarn push-up plate 22 is lowered, and the weft yarn 20 is wound around the hook portion 4 to form a loop 20a. .

Step _C2 (Fig. 4C) After the hook portions 10 and 4 are further rotated by 1/2 in the counterclockwise direction, the warp swinger 23 is raised.

Step D ₂ (Fig. 4D) After rotating the hook portion 10 and the hook portion 4 by 1/2 turn clockwise, the warp thread swinger 23 is lowered to wind the warp thread 21 around the hook portion 4.

Step E ₂ (Fig. 4 E) Hook portion 10 and hook portion 4 are further rotated 1/2 clockwise to remove weft thread loop 20a from hook portion 4 and hook it onto warp threads 21.

Step _F2 (FIG. 4F) After the hook portions 10 and 4 are rotated 11/2 times counterclockwise, the weft thread lifting plate 22 is raised.

G ₂ process (Fig. 4 G) After the hook part 10 and the hook part 4 are turned 1/2 clockwise to wind the weft thread 20 around the hook part 4, the hook part 10 is lowered and the weft thread 20 is wound around the hook part 4. twisted warp yarn 21 and weft yarn 2
0 is held in the gap S between the sleeve portion 6 and the sleeve portion 12.

Step _H2 (Fig. 4H) Turn the hooks 10 and 4 counterclockwise by 3/4 rotation. In this case, since the weft thread 20 is supported by the hook portion 10, it is prevented from coming off from the hook portion 4.

Step _I2 A warp loop 21a is formed in the same manner as in Step _I1 in the first embodiment, and the weft yarn 20 is passed through it.

J ₂ process After forming the weft thread loop 20b in the same manner as J ₁ process in the first embodiment, the upper winding hook 7 and the lower winding hook 1
By rotating the hook around the tilting shaft 26 in the direction of arrow A in FIG. 2 and gradually raising the hook 10, the weft threads 20 are first removed from the hook 4, and the warp threads 21 are removed later with a time difference. At the same time, the nodules are tightened using a tightening device (not shown). The knot structure according to this embodiment is the same as that shown in FIG. 3K. In addition, FIG. 4H shows the weft thread 20,
In order to clarify the winding direction of the warp yarns 21, these two yarns are shown separated from each other, but in reality, these two yarns are held within the gap S in FIG. 2, and the hook portion 10 is not shown in the figure. It has descended from the position , and is in a position overlapping the hook portion 4.

As explained above, according to the knitting net method of the present invention and the double winding hook used in the method, the upper winding hook and the lower winding hook can vertically approach and separate from each other, and the warp yarn When the weft and weft threads are wound separately, when the double winding hook is tilted, the thread hooked on the lower winding hook will come off first. When the two hooks are brought close to each other, and then the double winding hook is tilted and the hooks of both winding hooks are gradually separated, one of the warp and weft threads comes off first, and at this time, the knot tightening device tightens the knot. If you tighten the eyes, the eyes will be tightened reliably and so-called "chiyochin eyes" will not occur. In addition, when the hook is raised after winding the weft thread around the hook of the upper winding hook in the lowered state, the inclination angle of the weft rises, and even if the hook of the upper winding hook rotates in the opposite direction, the weft thread will not move away from the hook. It becomes difficult to come off. In addition, since the weft wound around the hook of the lower winding hook is held in such a way as to be pressed by the hook of the upper winding hook, the usual weft thread slip-off prevention device is not required.
Sufficient space is provided on the boat-shaped side of the knitting machine, and workability is also improved. Furthermore, after the weft thread is once wound around the hook of the upper winding hook, it is removed from the hook and wound around the warp threads.In the subsequent process, the weft thread is wound again around the hook of the upper winding hook, so it is strong and does not loosen. can form large nodules.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Figure 1 is a front view of the double hook, Figure 2 is a side view, and Figures 3A to 3.
3J is a process explanatory diagram showing an embodiment of the first invention of the knitting method, FIG. 3K is a knot structure diagram according to the same knitting method, and FIGS. 4A to 4H are diagrams showing the knitting method. FIG. 2 is a process explanatory diagram showing an example of the second invention. 1...Lower hook, 4...Hook part, 7...Upper hook, 1
0...Hook part, 20...Weft, 21...Warp,
22...Weft thread push-up board, 23...Warp thread swinger.

Claims (1)

[Claims] 1. An upper winding hook and a lower winding hook that are rotatably supported concentrically and movable in the axial direction, and have respective hook portions that face in the same direction and overlap each other in close proximity. This is a knitting method in which a double winding hook is used to knit a net. After the weft yarn is wound around the hook of the upper winding hook in a lowered state, the upper winding hook is raised relative to the lower winding hook, and the warp threads are passed through the lower winding hook. Wrap it around the hook, remove the weft from the upper hook by rotating the double winding hook, wind the weft around the warp, wrap the weft again around the hook of the upper hook, and then attach it to the lower hook. A knitting method characterized in that the weft yarn is passed through the warp loop that has been twisted and pulled out, and the double winding hook is tilted to remove the warp yarn from the hook of the lower winding hook before the weft yarn is removed. 2. A double hook is used, which has an upper hook and a lower hook that are rotatably supported concentrically and movable in the axial direction, and each hook portion faces in the same direction and overlaps closely with the other. A knitting method in which a weft thread and a warp thread are wound around the hook of the lower winding hook,
Once the weft is removed from the hook of the lower winding hook and wound around the warp, the weft is again wound around the hook of the lower winding hook, and with the weft and warp threads being wound around the hook of the lower winding hook, the upper winding hook is wound. Overlap the hook part on the hook part of the lower hook,
After passing the weft thread through the warp loop pulled out by the lower hook, tilt the double winding hook and gradually separate the hook of the upper winding hook from the hook of the lower winding hook, passing one of the weft and warp threads into the other thread. A knitting method characterized in that the net is removed from the hook part of the lower hook first. 3 The upper winding hook and the lower winding hook are rotatably supported around a common predetermined axis, and one of these winding hooks is arranged at a predetermined position in the direction of the axis, and the other winding hook is is formed to be able to reciprocate in the axial direction with a predetermined stroke, and the hook portions of both winding hooks face in the same direction and are configured to be close to each other and overlap each other. Double hook.