JPS6140782Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is used as a component of a net-making machine for knitting net fabrics such as fishing nets, and holds a spool wound with a weft thread and lets out the weft thread. It is related to the shuttle.

(Prior Art) Generally, this type of shuttle has a weft spool holding hole in the center, and one end is slightly extended to serve as the end to be placed on the frame of the net making machine. A weight storage section is provided near the middle, and a protrusion is formed on the upper surface of the end portion to serve as a guide hole for taking out the weft yarn.

In use, a weight for detecting thread breakage is stored in a weight storage section provided between the weft thread take-out hole communicating with the spool holding hole and the protrusion at the end. The weft thread is inserted through the hook at the top, and it is stored suspended in the air.

When the net making machine is operated under such conditions, when a knot is formed, that is, when the warp thread passes through the shuttle and draws the weft thread into the loop of the knot, the tightening roll is swung down, creating a sudden tension on the warp thread. Due to the resulting forces, the weft threads are also pulled sharply. For this reason, the weight, which is suspended in the air and stored loosely, jumps upwards due to the sudden tension of the weft thread, and because there is a large gap between the protrusion at the end and the weft thread take-out hole, when this happens, the weight storage This has the disadvantage that the weft threads cannot be drawn out normally and the knots become uneven.
In addition, since there is a considerable distance between the weight storage part and the protrusion at the end, the weft thread rubs against the upper surface edge part of the weight storage part when the weft thread is paid out, and that part is worn down and becomes groove-like. Combined with the jump, the weft threads are not only damaged, but also have the disadvantage of becoming hangnails and, in severe cases, being frayed. And when the weft is damaged,
Even if the mesh is carefully knitted, the mesh easily breaks, and just visually inspecting it will result in a defective product. In particular, as the speed of knitting increases, the above-mentioned drawbacks become more prominent.

(Purpose of the invention) The present invention was made to eliminate the above-mentioned drawbacks, and its purpose is to provide a shuttle that prevents the weights from flying out and the threads from fraying.

(Structure of the invention) The invention made to achieve this purpose is:
In a shuttle having a weft spool holding hole in the center, a weight storage part on one end side, and a protrusion having a weft removal and guide hole on the upper surface of the end, the weight storage part and the protrusion are provided. Another auxiliary protrusion is provided between it and facing the edge of the weight storage section, and a weft insertion hole is bored in the auxiliary protrusion, and an alumina bushing can be attached and removed through the insertion hole using adhesive. The shuttle is characterized by being attached to the shaft, and by providing the auxiliary protrusion along the edge of the weight storage section, the distance between the weft thread take-out hole and the weft thread take-out hole is narrowed, and the play of the thread is reduced, eliminating the problem of the weight jumping out. Not only is the alumina bush inserted into the insertion hole of the auxiliary protrusion,
Since the weft threads do not rub against the edges of the weight storage section and there is no groove-like abrasion part, the weft threads are not damaged or frayed.

(Embodiment) Next, the present invention will be explained in more detail with reference to the illustrated embodiment. Reference numeral 1 shows the entire shuttle, and a spool holding hole 2 in which a spool with a weft wound thereon is housed and held is provided in the center of the shuttle. One end of the shuttle is slightly extended to serve as an end 3 to be placed on the frame of the net making machine, and the other end is largely extended to serve as a segment fin 4.

A weft thread take-out hole 5 is provided in the upper part of the loading end 3 side of the spool holding hole 2, and a weight storage part 6 is formed adjacent to this weft thread take-out hole. A light beam passage hole 7 for detection is provided. Furthermore, a protrusion 8 is formed on the upper surface of the end of the placing end 3, and a hole 9 for taking out and guiding the weft yarn is formed in the protrusion.

The above configuration is the same as that of a commonly used shuttle, but in addition, an auxiliary protrusion 10 is added.
is formed between the weight storage portion 6 and the protrusion 8, and the auxiliary protrusion is also provided with a weft insertion hole 11. The formation position of this auxiliary protrusion 10 is the weight storage part 6.
It is better to form the weft thread at a position adjacent to the weft thread extraction hole 5, that is, along the edge of the weight storage section.
It is better to install it in a position with a narrower distance from the Alumina bushes 12, 13, and 14, which fit the weft thread take-out hole 5, the guide hole 9, and the insertion hole 11, are attached with adhesive, respectively. In addition, the code|symbol 15 in the figure is a weft, and 16 is a weight.

(Function) The shuttle of the present invention having the above-mentioned configuration is able to maintain the auxiliary protrusion 10 even if a strong tension force is instantaneously applied to the weft by, for example, the swinging down action of a tightening roll when the weft 15 is fed out. By providing this, the distance between the weft thread take-out hole 5 and the insertion hole 11 becomes narrower,
The protrusion of weight 16 is suppressed, and weight 1
6 will not come out from the storage part 6. or,
The weft threads 15 that are let out to form the mesh no longer rub against the edges of the weight storage section 6, and the grooves that were caused by the friction of the weft threads are no longer formed.

(Effects of the invention) As explained above, the shuttle according to the invention has an auxiliary projection provided between the weight storage hole and the end projection, and a weft thread insertion hole provided in the auxiliary projection. Since the distance between the insertion hole and the weft thread take-out hole, which communicates with the spool holding hole, is narrow, the insertion and retention of the weft thread is stable, and the sudden tension of the weft thread prevents the weight from passing through the weft thread and hanging down. Even if there is a flip-up action, the weights do not slip out of the weight storage section, and the net-making work can be continued, and the net-making process can be speeded up, which is an excellent effect.

Furthermore, a hard alumina bushing is attached to each insertion hole through which the weft thread is pulled out.
In addition, an auxiliary protrusion is provided near the weight storage part or along the edge part, and the alumina bush is attached to the insertion hole drilled in the protrusion, so that it is not possible to pay out the weft thread as in the conventional case. The formation of grooves due to abrasion that occurred at the edges is eliminated, and the weft is not only prevented from being damaged or frayed, but also the usable life of the shuttle is extended, and as a result, it can be used in the shuttle net making machine of the present invention. This also brings about excellent effects such as increasing the functionality of the net making machine.

[Brief explanation of drawings]

FIG. 1 is a side view of a shuttle according to the present invention, and FIG. 2 is an enlarged cross-sectional view of essential parts of the shuttle. 1...Shuttle, 2...Spool holding hole, 3
... Placement end, 4 ... Segment fin, 5 ... Weft thread take-out hole, 6 ... Weight storage section, 7 ... Light beam passing hole,
8... projection, 9... guide hole, 10... auxiliary projection, 11... insertion hole, 12, 13, 14... alumina bushing, 15... weft, 16... weight.

Claims (1)

[Scope of utility model registration request] In a shuttle having a weft spool holding hole in the center, a weight storage part on one end side, and a protrusion having a weft removal and guide hole on the upper surface of the end, the weight storage part and the protrusion are provided. Another auxiliary protrusion is provided between it and facing the edge of the weight storage section, and a weft insertion hole is bored in the auxiliary protrusion, and an alumina bushing can be attached and removed through the insertion hole using adhesive. A shuttle characterized by being attached to.