JPH0333829B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a yarn tying device, and more particularly to a yarn tying device for tying short yarns in a single knot.

<Prior Art> Generally, an example of a field in which it is necessary to knot a large number of threads in a short period of time is ear hanging culture in the culture of scallops and the like. In this ear hanging culture, small holes are made in the ears of cultured shellfish (young shellfish), a large number of monofilaments are passed through a long braid at appropriate intervals, and the monofilaments are inserted through the small holes in the ears. After knotting the shellfish to prevent it from slipping out, the braid was lowered into the sea.

<Problems to be solved by the invention> This ear suspension culture allows cultured shellfish to grow quickly, and
It has the advantage that it is easy to pull up from the sea, and that growing shellfish can be taken out simply by cutting the monofilament.

However, on the other hand, the length of the monofilaments is set short to avoid entanglement between the monofilaments when hanging cultured shellfish. As the length became shorter, it became difficult to mechanize, so in the past, each piece was done by hand.

However, manually knotting such a short and stiff monofilament is extremely troublesome and has the problem of low work efficiency.

<Means for Solving the Problems> The present invention has been made to solve the above problems, and includes a flange-like loop receiver on the outer periphery, and a thread introduction device provided across the loop receiver. a loop guide provided with a groove, whose axis is orthogonal to the yarn setting direction and is movable forward and backward in the axial direction; a loop guide having a hook at the tip and provided on an extension of the axis of the loop guide; a hook member provided so as to be able to reciprocate between a forward position where the hook enters the loop guide and a retracted position where the hook separates from the loop guide; and a hook member provided externally on the hook member;
The hook receiver includes a hook receptacle whose distal end is movable back and forth between a forward position where it approaches the loop guide and a retracted position where it is separated from the loop guide, and a first thread clamping section that is openable and closable. , comprising: a rotating yarn clamping means whose first yarn clamping part is provided so as to be rotatable on a plane perpendicular to the axis of the loop guide; and a second yarn clamping part which is provided so as to be openable and closable; When the yarn clamping section is setting the yarn, it faces the first yarn clamping section of the rotary yarn clamping means with the loop guide in the middle, and as the rotary yarn clamping means rotates, it avoids the rotary yarn clamping means. A thread knotting device is provided with a thread clamping means that is movably provided in a position.

<Operation> The present invention is constructed as described above, and the thread set at the thread setting position has one end held by the rotating thread holding means, the other end held by the thread holding means, and the thread set at the thread setting position. As the thread holding means rotates, the thread is wound around the outer periphery of the loop guide to form a single loop.

Next, by the forward movement of the loop guide and the rotation of the rotating yarn holding means, the yarn on one end side crosses the loop and is introduced into the yarn introduction groove.

Then, the thread in the thread introduction groove is engaged with the hook as the hook member that has advanced into the loop guide retreats, and is further pulled out from the rotating thread holding means and passes through the thread introduction groove to form a single loop. A knot is formed by passing through the inside of the .

Next, one end of the thread engaged with the hook is held between the tip of the hook receiver in the forward position and the hook, and as the hook and hook receiver move backward, the knot of the thread is attached to the loop guide. The knot is pulled out and the knot is tightened to form a single knot.

Then, the clamping by the hook and the hook receiver and the clamping by the thread clamping means are released, and knotting of the thread is completed.

<Example> Hereinafter, an example of the present invention will be described with reference to FIGS.
This will be explained based on Figure 0.

In the figure, 1 is the base of this thread knotting device, and on the top and inside of the base 1 there is a loop guide 10 that can move forward and backward in the axial direction, and a loop guide 10 that is on an extension of the axis of the loop guide 10 and that can move back and forth. a hook member 30, a hook receiver fitted onto the hook member 30 and movable back and forth, and a loop guide 10.
A rotating yarn clamping means 50 that can rotate on a plane perpendicular to the axis of the yarn, a yarn clamping means 70 that faces the rotating yarn clamping means 50 with the loop guide 10 in the middle when setting the yarn, and the vicinity of the loop guide 10. A thread knotting device is comprised of a tightening lever 85 provided in the thread tightening lever 85, a drive source consisting of each cam mechanism that provides predetermined operations to each of the above-mentioned members, and a motor 115 serving as a power source.

In the embodiment, the loop guide 10 is provided at one end of a guide shaft 21, as shown in FIGS.
A hook hole 15 is provided which can receive a hook 31 of 0. This loop guide 10 has a loop receiver 12 projecting like a flange on the outer periphery of a substantially central portion in the axial direction, and a winding portion 11 is formed on the end side of the loop receiver 12. Further, the loop guide 10 is provided with a thread introduction groove 13 that opens at the end of the winding portion 11 and is formed to cross the loop receiver 12 . This thread introduction groove 1
3 is a pull-out portion 13b that extends from the end of the winding portion 11 in the axial direction of the loop guide 10 and crosses the loop receiver 12;
Introductory part 1 provided with a substantially half-moon-shaped notch along
3a. Furthermore, loop receiver 1
A guide 14 cut out toward the guide shaft 21 side is provided at a predetermined position of 2.

This loop guide 10 is supported movably in the horizontal direction by a support member 23 at a continuous portion of the guide shaft 21, with the pull-out portion 13b of the thread introduction groove 13 facing upward. Furthermore, the loop guide 10 includes a connecting body 2 fixed to a guide shaft 21.
2, a driven body 24 which is driven by the rotation of the cam 103 and whose fulcrum is the pivot shaft 25, and the roller 2.
6. The loop guide 10 has an original position where the yarn set position line A passes approximately at the center in the length direction of the winding part 11;
The loop guide 10 is configured to move between a forward position where it moves forward in the direction of arrow S and a retreat position where it moves back in the direction of arrow S'.

The hook member 30 has a hook-shaped hook 31 at the tip.
With the hook 31 facing the loop guide 10, one side is fitted into a hook receiver 40, which will be described later, and the other side is supported by a support member 33, so that the hook 31 is placed horizontally on an extension of the axis of the loop guide 10. It is arranged so that it can be moved in the direction. Further, the hook member 30 is configured to follow the rotation of the cam 109 via a connecting body 34 fixed thereto, and to be driven by a driven body 36 and a roller 37 having a pivot 35 as a fulcrum. The hook 31 of the hook member 30 moves from the retreated position to the original position slightly in the direction of arrow T, and then moves further in the direction of arrow T to enter the hook hole 15 of the loop guide 10 in the forward position. , and is configured to reciprocate between a retracted position where it moves in the direction of arrow T' and is separated from the loop guide 10.

The hook receiver 40 is made of a cylindrical member that can be fitted onto the hook member 30, and is supported by support members 42 and 43 so as to be movable in the horizontal direction. The hook receiver 40 is configured to follow the rotation of the cam 107 via a connecting body 44 fixed thereto, and to be driven by a driven body 46 and a roller 47 having a pivot 45 as a fulcrum. The hook receiver 40 moves in the direction of arrow T to a forward position where the tip end 41 of the hook receiver 40 approaches the loop guide 10 in the forward position, and moves in the direction of arrow T' to move away from the loop guide 10. It is configured to move back and forth between the retracted position and the retracted position.

The rotating yarn clamping means 50 is fixed to a rotary plate 57 and includes a clamping body 51 having a deformed U-shape having a notch 52 at the tip thereof, and a clamping body 51 formed in an L-shape and slidably supported by the clamping body 51. It is mainly composed of a clamping rod 53 that is This clamping rod 53 is attached to the collar 5.
Due to the spring force of the spring 56 whose one end is defined by 5,
The tip end 53a is biased so as to come into pressure contact with the clamping body 51, and when the rear end 53b is pressed by an opening body 60 (described later), the spring 56 is compressed, and the clamping rod 53 slides and cuts. Notch 52 and tip 53a
The first thread holding part 54 is formed to be opened. A rotary plate 57 that rotatably supports the rotary thread holding means 50 is fixed to a sprocket 58 rotatably provided on the annular protrusion 42a of the support member 42 via a bearing 59. Further, the sprocket 58 is connected to a sprocket 102 provided on the main shaft 100 via a chain 65, and is formed so that the rotary plate 57 rotates twice for each rotation of the main shaft 100. Further, the rotating yarn clamping means 50 is arranged such that the first clamping part 54 thereof is on the yarn set position line A at the original position, which is the starting point of the turning movement, and is kept at a predetermined distance from the loop guide 10. There is. Then, as the rotating plate 57 rotates, the first thread holding section 54 moves one step in the direction of the arrow U on a plane perpendicular to the axis of the loop guide 10.
It is formed to make two turns per tubercle.

The release body 60 has a pivot 61 on the upper part of the support member 42.
The distal end portion thereof is provided so as to press the retreating portion 53b of the clamping rod 53 when the rotating thread clamping means 50 is at the original position. Further, the release body 60 is configured to follow the rotation of a cam 108 that is provided integrally with the cam 107, and to be driven by a driven body 62 and a roller 63 that have a pivot 64 as a fulcrum.
When the rotary yarn clamping means 50 is in the original position and in a standby state, it moves up and down between a lower position where it presses the rear end portion 53b and an upper position where it releases the pressure when clamping the yarn. It is formed like this.

The yarn clamping means 70 is mainly composed of a clamping body 71 made of a rectangular thick plate member and a clamping rod 74 formed in an L-shape. A guide hole 73 is vertically bored in the holding body 71, and a pair of guide parts 72 are provided at the upper end with the opening of the guide hole 73 interposed therebetween. The clamping rod 74 is connected to the guide hole 7
3, and a terminal member 76 is fixed to the lower end of the holding body 71 that protrudes downward. and,
A spring 77 is interposed between the terminal member 76 and the clamping body 71, and the clamping rod 74 is always urged to move downward. As a result, the tip 74a of the clamping rod 74 comes into pressure contact with the top surface of the clamping body 71, and when the terminal member 76 is pushed up by a push-up lever 82, which will be described later, the spring 77 is compressed and the tip 74a and the top surface of the clamping body 71 are pressed together. They are formed so as to be separated from each other so as to open a second thread holding section 75 made up of both. This thread clamping means 70 has a thread clamping body 71
is fixed to the upper end of the driven body 79, and the cam 1
05, and is configured to be driven by a driven body 79 and a roller 80 having a pivot shaft 78 as a fulcrum. Then, the thread clamping means 70
, the second thread holding portion 75 is located at the thread set position line A.
The first part of the rotary yarn holding means 50 which is located above and maintains a predetermined distance from the loop guide 10 and is in its original position.
The thread holding portion 54 and the loop guide 10 are disposed at the original position facing each other in the middle.
At this time, the tip of the tip 74a of the holding rod 74 is
It is arranged facing left in Figure 8, and
The thread clamping means 70 is formed to move to the avoidance position in the direction of arrow V following the rotation of the cam 105 when the rotating thread clamping means 50 rotates.

The push-up lever 82 is configured to follow the rotation of a cam 106 that is integrally provided with a cam 105 via a roller 83 using a pivot shaft 84 as a fulcrum. When the thread clamping means 70 is in the original position and in a standby state, it is vertically moved between an upper position where the terminal member 76 is pushed up and a lower position where the push-up is released when the thread is clamped. is formed.

The tightening lever 85 has a notch 85a at its tip, and is disposed at a predetermined position on the right side of the thread set position line A, as shown in FIG. This tightening lever 85 is fixed to an operating shaft 86 that is rotatably and axially movably supported by a support member 87, and moves in the directions of arrows X and X' perpendicular to the axis of the loop guide 10, and in the direction of the axis. parallel arrow Y,
It is provided so as to be movable in the Y′ direction. The operating shaft 86 has a collar 88 fixed to one end thereof, and is always urged in the direction of arrow Y' by a spring 90 which is prevented from coming off by a collar 89 at the other end. Also,
An arm 95 fixed to the operating shaft 86 is connected to the cam 10.
The roller 93 is driven by the rotation of the cam 104 provided integrally with the roller 93 and
It is linked via a pin 94 to a driven body 92 provided with a. Thereby, the tightening lever 85 is configured to tilt in the direction of the arrow X from the upright state as the driven body 92 moves up and down. Furthermore, the operating shaft 8
The collar 96 fixed to the driven member 6 is arranged so as to be able to be engaged with a locking arm 98 connected to the upper part of the driven body 24 by a pin 97, and the collar 96 is fixed to the driven body 24 so that the eye tightening lever 85 tilted in the direction of the arrow As the body 24 moves, it is formed to be movable to the closing position in the direction of arrow Y. Furthermore, the eye tightening lever 85 is connected to the cam 10.
With the rotation of 3,104, it moves in the direction of arrow Y',
It is further moved in the X' direction and returned to its original position.

Each of the above cams 103, 104, 105, 10
6, 107, 108, and 109 are each fixed to the main shaft 100, and the main shaft 100 is rotatably supported by a bearing 111, and the sprocket 1
01 and a chain 110 to a motor 115 with a speed reducer so as to rotate in a predetermined direction.

Note that the driven bodies 24, 36, 46, 79 have their respective rollers 26, 37, 47, 80 connected to the spring 2.
7, 38, 48, 81, each cam 10 is always
3, 109, 107, and 105 in the direction of pressure contact.

In addition, at the position crossing the thread set position line A,
An operating lever for the limit switch 117 is provided, and when the thread is passed between the rotating thread clamping means 50 at the original position and the thread clamping means 70 at the original position, the limit switch 117 is turned on by the thread. , the motor 115 is configured to start. Furthermore, the motor 115 is connected to the main shaft 10
It is configured to stop under the control of a control device (not shown) when 0 rotates once.

Further, a cover 5 having a guide groove 6 for guiding the yarn to the yarn set position line A is provided on the upper part of the base 1. The clamping means 50, thread clamping means 70, tightening lever 85, etc. are covered. Note that the reference numeral 2 is a through hole provided on the upper surface of the base 1.

Next, the operation of the thread knotting device configured as described above will be explained.

First, when the device is in a standby state, the winding part 11 of the loop guide 10 is in its original position along the thread set position line A, and the hook member 30 is in its original position retreated in the direction of arrow T'. Receiver 40 is an arrow
It is in a retracted position in the T′ direction.

Furthermore, the rotating yarn clamping means 50 and the yarn clamping means 7
0 are opposed to each other at their original positions on the thread set position line A, and the first and second thread holding parts 54 and 75 are released. Further, the eye tightening lever 85 is in the original position and in an upright state.

In this state, the thread 120 is guided by the guide groove 6.
is set on the thread set position line A (11th
(See Figure A), the limit switch 117 is turned on, the motor 115 is started, and the main shaft 100 rotates.

As the main shaft 100 rotates, the rotating thread holding means 50
is driven via sprocket 102, chain 65, and sprocket 58, and starts rotating in the direction of arrow U. Further, due to the rotation of the cam 108, the pressure on the rear end portion 53b of the clamping rod 53 by the opening body 60 is released via the driven body 62, and the first thread clamping portion 5
4 closes and holds part a, which is one end of the thread 120. On the other hand, when the cam 106 rotates, the push-up lever 82 releases the end member 76, and the second thread clamping section 75 closes and the other end of the thread 120 is closed. sandwich the parts.

Subsequently, the thread 120 is wound around the winding part 11 of the loop guide 10 by the rotation of the rotary thread clamping means 50, and the cam 10 is wound around the winding part 11 of the loop guide 10.
5, the yarn clamping means 70 moves in the direction of arrow V to the avoidance position. At this time, b of the thread 120
The b side is supported by the loop receiver 12 and bent, and the b part is pulled leftward in the figure through the guide 14. Further, following the rotation of the cams 109 and 107, the hook member 30 and the hook receiver 40 move forward in the direction of the arrow T, respectively. When the rotating thread holding means 50 rotates once, the thread 120 forms a single loop on the winding portion 11 (see FIG. 11B).

Next, the loop guide 10 moves in the direction of arrow S following the rotation of the cam 103, and the loop portion of the thread 120 is supported by the loop receiver 12 and crosses to form an intersection c. At this time, the hook member 30 is in the forward position, and the hook 31
enters the hook hole 15 of the loop guide 10 and reaches the introduction part 13a of the thread introduction groove 13. Further, the hook receiver 40 is in the forward position, and its tip 41 is located close to the tip of the loop guide 10 (see FIG. 11C).

Furthermore, when the rotating yarn holding means 50 rotates, the yarn 1
The part a of 20 is introduced into the introduction part 13a and becomes engaged with the hook 31 (see FIG. 11D).

Subsequently, the hook member 30 moves in the direction of arrow T', and the hook 31 hooks part a of the thread 120 and retreats. At this time, part a of the thread 120 is attached to the hook 31.
Due to the tensile force, the yarn is pulled out from the first yarn clamping part 54 of the rotating yarn clamping means 50, passes through the inside of the loop, and is pulled out to the distal end side of the loop guide 10 through the pull-out part 13b. And thread 12
0 is sandwiched between the tip 41 of the loop receiver 40 and the hook 31, and is pulled by the movement of both in the direction of arrow T', forming a knot (see Fig. 11E). .

Next, as the loop guide 10 begins to move in the direction of arrow S', the tightening lever 85 moves toward the cam 104.
It tilts in the direction of the arrow X as a result of the rotation of the thread 120, and the notch 85a comes into contact with the section a of the thread 120. Further, the loop guide 10 moves in the direction of arrow S', and the thread 12
The loop part of thread 0 is pulled out from the winding part 11, and the loop part of thread 1
20 is suspended between the hook 31 and the thread holding means 70 (see FIG. 11F).

Then, the loop guide 10 continues to move backward in the direction of the arrow S', and the tightening lever 85 further moves in the direction of the arrow X to press the part a, and the locking arm 98
It moves in the direction of arrow Y in conjunction with the movement of . As a result, the notch 85a moves toward the thread clamping means 70 while tightening the knot of the thread 120, thereby setting the knot tightening position (see FIG. 11G).

Subsequently, the hook 31 and the tip 41 move to the retreated position in the direction of the arrow T' while holding the part a, and tighten and knot the knot. Next, the tightening lever 85 moves in the direction of arrow Y' and the direction of arrow X', moves away from the knot, and returns to its original position. Further, the hook 31 moves slightly forward in the direction of arrow T from the retreated position, and the thread 120 is released from being held between the hook 31 and the tip end 41. Furthermore, the end member 76 of the thread clamping means 70 is pushed up by the push-up lever 82, the second thread clamping part 75 is released, and the thread 12
The clamping of part b of 0 is released.

Then, the rotating yarn clamping means 50 reaches the original position after turning twice, and at this time, the release body 60 descends and presses the rear end portion 53a of the clamping rod 53, and the first yarn clamping portion 54 will be released. Further, the power to the motor 115 is turned off under the control of a control device (not shown), the motor 115 is stopped, and one knotting of the thread is completed.

Further, when a new yarn 120 is set at the yarn set position line A, the above-described knotting process is repeated.

Note that this invention is not limited to the above description and illustrated examples, and its embodiments can be changed without departing from the technical idea of this invention. For example, the movement of the tightening lever in the direction parallel to the loop guide axis may be configured to move in the opposite direction of the above embodiment, and the nodule position can be adjusted by setting the direction of movement parallel to the axis and the amount of movement. can be set at any position on the thread. Further, when the tightening lever is not provided, a knot is formed approximately in the middle between the first yarn clamping section of the rotating yarn clamping means and the second yarn clamping section of the yarn clamping means.

Further, the yarn may be automatically knotted in combination with a yarn supplying device that can automatically supply a predetermined length of yarn on the yarn setting position line A of the yarn knotting device.

Further, the drive source for driving the loop guide, the hook member, the hook receiving thread holding means, etc. may be an electromagnetic actuator or a fluid pressure actuator provided individually therefor.

Further, the loop receiver may have a rising portion treated to have an undercut shape or the like in order to ensure that the thread does not slip through to the guide shaft side.

<Effects of the Invention> The yarn knotting device according to the present invention has the above-described configuration, and the rotating yarn clamping means and the yarn clamping means are separated by a short distance with the loop guide for forming a loop of yarn in the middle. Since the threads are arranged opposite to each other, even short threads can be knotted easily.

In addition, this device automatically performs knotting, which eliminates the extremely troublesome manual work of knotting short, stiff monofilaments, and allows knotting of a large number of threads with high efficiency. It produces the effect that can be achieved.

Although a thread tying device configured to automatically knot the thread is disclosed in Japanese Patent Application Laid-Open No. 662-41360, the configuration is complicated, such as the motor being reversed, and such a device cannot be used. Due to the working environment in the waterfront area where it is used, there was a risk that its operation would become unstable.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of a thread knotting device according to an embodiment of the present invention, FIG. 2 is a front sectional view, FIG. 3 is a plan view showing a loop guide, and FIG. 4 is a right side view. Fig. 5 is a rear view, Fig. 6 is a rear view showing the rotating thread holding means, Fig. 7 is a left side view, Fig. 8 is a front view showing the thread holding means, and Fig. 9 is a left side view. , FIG. 10 is a left side view showing the tightening lever, and FIGS. 11A to 11G are plan views showing the thread knotting process. 10... Loop guide, 30... Hook member, 40
...Hook receiver, 50...Rotating yarn clamping means, 70... Yarn clamping means.

Claims (1)

[Claims] 1. A flange-shaped loop receiver on the outer periphery, a yarn introduction groove provided across the loop receiver, and an axis that is perpendicular to the yarn setting direction and advances in the axial direction. a loop guide provided so as to be movable backward; and a hook provided at the distal end thereof, provided on an extension of the axis of the loop guide, a forward position where the hook enters into the loop guide, and a backward position where the hook moves away from the loop guide. a hook member provided so as to be reciprocally movable between positions; and a hook member provided externally on the hook member and having a forward position in which the distal end thereof approaches the loop guide and a retracted position in which the distal end thereof moves away from the loop guide. It has a hook receptacle that can be moved back and forth between the two, and a first thread gripping section that can be opened and closed.
a rotary yarn clamping means, the first yarn clamping part of which is provided so as to be rotatable on a plane perpendicular to the axis of the loop guide; and a second yarn clamping part which is provided so as to be openable and closable;
When setting the yarn, the second yarn clamping section is set to the first position of the rotating yarn clamping means with the loop guide in the middle.
Yarn clamping means facing the yarn clamping part and movable to avoid the rotational yarn clamping means as the rotary yarn clamping means turns; Nodulation device.