JPS5813463B2 - Frogmata thread knotting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a frog knot tying device that connects two pieces of fabric in a zigzag manner, right and left, with a string.

Fishing nets come in a variety of shapes and sizes, such as flat nets and bag nets, depending on the location of use and the type of fish.

The nets produced by a net making machine are limited to a specific width, so in order to make a wide net, two or more pieces of net must be joined together by hand.
Various types of bag nets are created by hand by changing the method of joining two or more nets together, or in other words, by varying the degree of shrinkage when joining them together.

When making a bag net, when joining the nets together, tie only one side of the net in the same place and shrink it. After joining the nets in a fan shape, tie the nets at both ends. are bound together into a bag.

In this case, the manual work of joining the net fabrics is extremely time-consuming.

Furthermore, manual joining of thin meshes with a nominal mesh size of 18 mm, for example, is a particularly difficult task.

Generally speaking, fishing nets are tied together in two ways: the Honme knot and the Kaerimata knot.

The former requires less knotting thread and is economical and easy to tie, but has the disadvantage that the knot tends to slip.

The latter, on the other hand, requires a slightly larger amount of tying thread and is somewhat more complicated to tie, but it has the characteristics that the knot does not get messed up and the net spreads well when tied.

Therefore, conventionally, fishing nets have been tied together by hand-tied tying, although it is a bit tedious, but this work is complicated and requires a large number of steps, as it overlaps with the number of steps such as shrink tying as mentioned above. are doing.

The object of the present invention is to provide a frogmata thread tying device that can perform these operations quickly and reliably with a mechanical configuration without manual work. A movable substrate, and a plurality of pairs of clamps attached to this substrate, which move in the front and rear directions relative to the substrate, grip the bent portion of the yarn to be bound at two places, make it stick out, and fix it. A thread loop end fixing device with claws, a thread tying shuttle that incorporates a tying thread spool and is reciprocated at a fixed position in a direction perpendicular to the base plate, and a tying thread pulled out from the shuttle that is moved back and forth by the shuttle. A thread path turning fork that is hooked at two points in front of the moving path and displaces the hooked part of the thread in a right angle direction, and is pulled out from the thread by the reciprocating movement of the shuttle. The yarn path is passed sequentially inside and outside the bent portion of the yarn to be bound, and the yarn is further hooked to the outside of the bent portion of the yarn to be bound by the yarn path turning fork. The fixing position of the bent part of the thread to be tied is changed by moving the board in the front and rear as well as the left and right directions while the shuttle is stopped so that the thread passes through a space surrounded by the knot thread. It is something.

Next, the present invention will be explained with reference to embodiments.

FIG. 1 is a perspective view showing the overall general structure of the frogmata thread tying device of the present invention.

In the figure, 1 is a left board, and 1' is a right board, each of which can be driven in the front-rear direction (arrow A) and the left-right direction (arrow B).

Reference numeral 2 denotes a yarn wheel end auxiliary fixing device, which is provided at the center of the left and right boards 1 and 1', and 3, which is fitted into the boards 1 and 1', feeds and drives the thread in the front and back direction relative to the board. This is a thread ring end fixing device that can perform the following operations, and one device is provided on each of the left and right boards 1 and 1'.

Although the Frogmata thread tying machine can be used with only one device on one side, in the explanation of this embodiment, a case where a fishing net stitching machine is constructed by providing a pair on the left and right side has been taken up, so the following explanation will mainly be made using the device on the left side. Let's talk about the equipment.

4 is a mesh fabric set on the substrate 1, and a thread ring end fixing device 3
As shown in FIG. 10, the ends of the net fabric are held by the knots of the net ring threads.

5 is a shuttle, and 6 is an upper reciprocating portion of the shuttle 5, which drives the shuttle 5 to reciprocate vertically through the intermediate space between the substrates 1 and 1'.

Reference numeral 7 denotes a thread tightener, behind which a thread path turning fork 8 is provided.

9 is a knot guard. Although not shown, the substrate 1,
A lower reciprocating section is provided below 1' to face the upper reciprocating section 6.

FIG. 2 is an external view of the shuttle 5, which is composed of three main parts: a thread winding part 11, a knot tensioning pipe part 12, and a thread guide pull-out pipe part 13, which are detachably connected with screws.

Figures 3, 4, and 5 are m-■ in Figure 2, respectively.
, ■-■ and ■-■ are longitudinal cross-sectional views shown in arrow views.

In these figures, reference numeral 14 denotes a thread that is rotatably supported on the thread-wound tube portion 11, and the arrow-shaped two-dot chain line above the collar portion 15 indicates a wound knot.

The tying thread is wound along the conical surface of the flange 15 of the spool 14, one layer at a time, and wound in alignment to a predetermined width on the axis, so that it is easy to unwind from the end of the thread.

Reference numeral 16 indicates a pair of notches for engagement with a lower reciprocating portion (not shown) of the thread tying device.

A spring 17 has a truncated conical surface at one end and is pressed against a conical concave surface provided at the upper center of the knot tension tube section 12 by the elastic force of a coil spring 18, and the knot thread is inserted between the two conical surfaces. Form a tension section.

Reference numeral 19 is a thread feed-out hole, and 20 is a thread pull-out hole.

Reference numeral 21 denotes a tying thread guide piece housed in the thread guide pull-out tube 13, and a coil engaged between the spring receivers 21 and 21' provided at the lower part of the tying thread guide piece 21 and the upper part of the tying thread tensioning tube section 12, respectively. It is resiliently supported by a spring 22.

Further, a small hole for guiding the knotting thread is penetrated through the upper part of the knotting thread guide piece 21.

13' is a sheath tube of the thread guide pull-out tube section 13;
Reference numeral 3 denotes a pair of slits provided on the side wall of the thread guide pull-out tube portion 13 over almost the entire length, one of which opens at the lower end of the sheath tube 13', the right side opening serves as the thread introduction hole, and the left side opening opens. The part serves as the thread pull-out hole.

As shown by the two-dot chain line, the thread let out from the spool 14 passes through the center small hole of the knotting thread tension tube section 12, the tension section, and the thread letting-out hole 19, and then passes through the thread introduction hole on the right side of the thread guide draw-out tube section 13. drawn into the thread guide draw-out tube section 13 and pulled up along the right-hand slit 23;
The thread is passed through the small hole in the knotting thread guide piece 21, then pulled down along the left slit 23, and passed through the thread pulling hole on the left side of the thread guide drawer tube section 13 and the thread pulling hole 20 in the knotting thread tensioning tube section 12. taken outside.

The slit 23 secures a path for the thread to pass through, while the sheath tube 13' is used to prevent the knotting thread from protruding from the slit.
is provided.

When the knot is pulled out, the knot is pulled out from the shuttle 5 due to the frictional resistance applied by the elastic element 17 of the tension section and the frictional resistance caused by the thread path from the thread winding 14 to the thread pull-out hole 20. Give proper tension to the thread.

The tying thread is also supported in the thread guide pull-out tube portion 13 via the tying thread guide piece 21 and the coil spring 22, in other words, by an elastic body.

Reference numeral 24 indicates a notch for engagement with the upper reciprocating portion 6 of the thread tying device provided on one side of the upper end of the sheath tube 13'.

Next, the thread ring end fixing device will be explained in detail with reference to FIGS. 6 to 9.

The supporting claw consists of a right claw 30 and a left claw 31, as shown in FIG.
Each element is composed of a claw and a claw holder.

The right claw 30 and the left claw 31 are pressed against each other, and the knot at the end of the thread ring of the net fabric 4 is inserted between the claws and fixed.

The pawls 30 and 31 are fitted into a feed pawl guide 32 shown in FIG. 7, so that they can slide in the left and right directions in the figure.

The feed pawl guides 32 are attached to the substrates 1 and 1', respectively.

A U-shaped plunger 35 with push-up arms 33 and 34 that can slide up and down is fitted into the front and rear sides of the feed claw guide 32, and a front housing wall 36,
A rear housing wall 37 is fixedly attached to the substrates 1, 1'.

The U-shaped plunger 35 is connected to the base plate 1 via a push spring 38.
1', and is always elastically biased downward, the lower part of which is supported by a descending restriction plate 40 with an adjustment screw 39, and a push-up cam 41, a cam follower 42, and a cam follower 42 connected thereto. It is pushed up from below by a push-up rod 43.

The above-mentioned feed pawl guide 32, U-shaped plunger 35, front housing wall 36, and rear housing wall 37 constitute an upper pawl feeding housing 44 and a lower pawl feeding housing 45, and the supporting pawl is fitted and housed inside each housing. be done.

In the case of this embodiment, five pairs of supporting claws are housed in the upper claw feeding housing 44 and two pairs of feeding claws are housed in the lower claw feeding housing 45.

A feed plunger 46 and a return angle rod 47, which push the supporting claw group in the forward direction in the upper claw feeding housing 44 and in the backward direction in the lower claw feeding housing 45, penetrate through the rear housing wall 37 and the front housing wall 36, respectively. It will be established.

Each of the feed plunger 46 and the return angle rod 47 is attached with a drive device and a cam and a gear mechanism for aligning the drive phase in a predetermined sequence.

These sequences will be discussed in detail later.

Next, the movement of the holding pawl will be explained with reference to FIG.

The thread ring end fixing device shown in FIG. 9 and capable of being driven forward and backward is attached to the right board 1'.

In Fig. 9, a, b, C, d, e... each indicate the individual clamping claws 30, 31, which are arranged separately in the upper claw feeding housing 44 and the lower claw feeding housing 45 as described above. ing.

In the figure, the claws are fed forward from right to left in the upper claw feeder housing 44, and the claws are pushed in from left to right in the lower claw feeder housing 45.

t in FIG. 9 indicates the width of the feed pawl guide 32, and push-up arms 33 and 34 are connected to the front and rear (left and right in the figure) of the feed pawl guide 32 so as to be vertically slidable.

The push-up arms 33, 34 protrude from the U-shaped plunger 35 and move up and down as the U-shaped plunger 35 moves up and down.

In state (3) of FIG. 9, ten clamping claws 30, 31 are aligned on the upper guide surface 48 of the feeding claw guide 32, and one cycle of the feeding operation is completed.

The feed plunger 46 is constantly biased toward the right in the figure by the coil spring 49, and returns after this stage.

Next, in state (2), immediately after state (2), the push-up cam 41 shown in FIG. U-shaped plunger 35 is the central push spring 3
It descends due to the action of 8 and its own weight.

Here, only one of the left end retaining claws 30 and 31, a, is in a position outside the upper guide surface 48 of the feed claw guide 32, so a falls under its own weight and is screwed to the U-shaped plunger 35. It settles on the push-up arm 33.

In this case, the upper surface of the push-up arm 33 is adjusted by the adjusting screw 39 of the descending restriction plate 40 so that it is flush with the lower guide 50 of the feed pawl guide 32.

In state ■, the supporting pawl a moves toward the feed pawl guide 32 due to the pushing action to the right (backward direction) of the rear return angle rod 47 at the lower left.
are sent to the right on the lower guide surface 50 of the n
, m, l, and k, and are aligned so as to fill the space of one holding claw between them and the rear housing wall 37 at the right end.

Here, the right end supporting pawl k is removed from the lower guide 50 of the feed pawl guide 32 and comes to a position directly above the push-up arm 34 at the rear.

In state ■, the cam follower 4 is moved by the action of the push-up cam 41.
2. Push up the U-shaped plunger 35 via the push-up rod 43, and enter the right half of the empty space in the upper claw feeding housing 44 by the push-up arm 34.

At this time, the head claw of the clamping claw k pushes up the net lifting plate 51.

In state ■, the feed plunger 46 is pushed to the left by its feed drive mechanism (not shown) against the elastic force of the coil spring 49, and the clamping claw k moves the upper guide surface 48 of the feed claw guide 32 to the left. sent to.

Subsequently, all ten supporting claws in the upper row are simultaneously moved to the left by one claw, that is, by 1/2 mesh pitch.

In the final state ■, the feeding operation of the holding pawl enters the next cycle, and by repeating the same process as shown in FIGS. The situation is shown in which, when the position is sequentially moved from 1' to 1'', the position is further moved to the left by one claw, that is, by 1/2 mesh pitch.

This is a state in which the supporting claws have been advanced by two meshes, that is, exactly l mesh pitches, from the state shown in FIG. 9.

The feeding operation of the supporting claws 30, 31 is performed by repeating the above steps.

Next, the operation of supporting and fixing the knot of the yarn to be bound, in this embodiment, the net ring yarn at the end of the net fabric, by the yarn loop end fixing device 3 will be explained.

First, the knot at the end of the mesh is approximately aligned with the parallel line of the protruding claws of the clamping claws 30 and 31, and the knot at the front end is aligned with the mesh lifting plate 5.
A mesh fabric 4 is placed on the left substrate 1 so as to be located slightly forward of the front edge of the substrate 1.

Then, the thread ring end fixing device 3 is caused to perform a feeding operation.

By the operation in the above-described state (2), the end portion of the net fabric placed on the substrate 1 is lifted by the net lifting plate 51.

P in ① indicates the mesh thread at this time. During the transition from the state ■ to the prone state ■, the net lifting plate 51 returns to its original position, and the edge of the net material touches the substrate. Since the feeding is paused, the mesh yarn p falls to the left side of the claw protrusion of the clamping claw k and is sufficiently caught during that time.

The K position indicated by the two-dot chain line in state ■ indicates that situation.

In state ■, all 10 upper clamping claws are sent to the left by 1/2 pitch at the same time, so the mesh thread caught on the holding claw K is sent to the left by 1/2 pitch, and at the same time the end of the mesh The knot is clamped and fixed by a pair of supporting claws.

If the above-mentioned supporting fixation is not performed in the first cycle due to the difference in the arrangement of the left-hand and right-handed clamping claws, the second knot from the front edge of the fabric will be fixed by a pair of clamping claws in the second cycle. Ru.

Subsequently, the yarn loop end fixing device 3 repeats the same operation repeatedly, so that the second or third knot, then the third or fourth knot from the front end of the net fabric is supported and fixed from both sides by a pair of supporting claws. At the same time, the entire mesh is fed 1/2 pitch at a time.

FIG. 10 is a schematic diagram showing a state in which the knot of the net thread at the end of the net fabric is fixed by the ten supporting claws 30, 31 aligned on the upper guide surface 48 in this manner.

In the figure, reference numeral 2' denotes a support pin of the auxiliary fixing device 2 for the thread ring end, which serves to maintain the shape of the bent portion at the end of the thread ring.

The yarn wheel end auxiliary fixing device 2 always operates in synchronization with the yarn wheel end fixing device 3, in which case the net end tip support arm opens outward below the base plate 1, and the support arm attached to the tip thereof opens outwardly below the base plate 1. At the position where the pin 2' enters the thread ring, the support arm is raised to the height of the board 1, and by closing inward, the support pin 2' is supported so as to maintain the shape of the bent portion at the tip of the thread ring. It is like that.

With the above steps, the holding and fixing of the thread loop end of the net fabric, which is the preparatory stage for the frogmata thread tying operation, is completed.

Next, the frog tying operation by this frog tying device will be explained with reference to FIGS. 10 to 15.

In FIG. 10, the ■ mark indicates the relative position of the shuttle 5 with respect to the substrate 1 when the shuttle 6 is driven downward, and the ◎ mark indicates the relative position of the shuttle 5 with respect to the substrate 1 when the shuttle 6 is driven upward perpendicularly to the substrate 1. Q, R, and S are the relative positions that the shuttle 5 holds during the tying operation in this order.

The substrate 1 is adjusted so that the shuttle 5 is held by the upper reciprocating portion 6 at its upper end notch 24 and is at the upper stroke end and located directly above the P position.

Then, the thread path turning fork 8 is retracted and the pair of forks are maintained in that position vertically, while the thread end of the knotting thread pulled out from the thread pull-out hole 20 of the shuttle 5 passes through the knotting thread guard 9. Assume that it is tied to an appropriate location on the lower right side.

When the Frogmata thread tying device is activated from this state, in synchronization with the up and down reciprocating motion by the upper and lower reciprocating parts of the shuttle, the disk groove cam lever link mechanism moves the board 1 back and forth,
The shuttle 5 is moved laterally and the relative position occupied by the shuttle 5 is changed in the order of P→Q→R-8, and the thread tying operation of the shuttle 5 is performed.

In this case, the feeding drive of the thread ring end fixing device 3 is stopped.

Fig. 11 shows the frogmata knot, and Fig. 12 shows the tying procedure.

FIG. 13 schematically shows the thread path of the tying thread during the thread tying operation performed according to the above-mentioned tying procedure in relation to the net thread loop end, and shows the relative position of the shuttle 5 in FIG. 10 between the operations. For P and for P'Q, Q' and Q'', R
R' corresponds to R', and S' and S'' correspond to S, respectively.

To explain the state shown in Q', immediately after the shuttle 5 pulls up the knotted thread in the state shown in Q', as shown in FIG. Advance while rotating 90 degrees clockwise,
The pair of forks that had been held in an up-and-down position take a horizontal position, and the tips of the forks come out to the point where they almost touch the thread tightener 7 and stop; however, during this time, a part of the tying thread is held horizontally by the forks. It shows that it is being held in a twisted position.

In this position, the shuttle flies from top to bottom (RJ diagram), and further, the shuttle easily and reliably flies from bottom to top through the thread ring (S' diagram), which is expanded and fixed by the rotation of the fork 8. It is.

Only after a loop of the tying thread was formed in the horizontal plane between the tying thread and the thread to be tied could the frog-mata knot be made by simply driving the shuttle 5 back and forth up and down. To replenish the required knotting thread, use the thread winder 14.
In the case of unwinding from the tying line, when the thread path turning fork 8 returns to its original position without interfering with the tying thread while keeping the pair of forks in a horizontal position in the state shown in S', the tying thread The above-mentioned additional supply causes slack in the thread, and the final process of thread tightening becomes extremely incomplete.
This results in a defective thread knot.

In this invention, such a problem does not occur at all because the knotting thread pulled out by the elastic body is supported within the shuttle.

That is, the necessary additional thread length is
The coil spring 22 is compressed by the tension of the tying thread through the tying thread, and the tying thread guide piece 21 is pushed down. Shuttle 5 prevents knotting threads up to 90 mm from coming out from spool 14.
As a result, the compressed coil spring 22 is restored with the start of the return operation of the thread path turning fork 8 described above, and the slack of the knotting thread after this thread tying process is absorbed. Figure 13 S” and the first
The amount of tightening in the final step of tying the thread shown in Figure 5 is kept to the minimum necessary, and the thread is reliably tightened.

On the other hand, at the same time as the thread tightening operation, the support pin 2' of the thread ring end auxiliary fixing device 2 returns to its original position when supporting the bent portion of the thread ring end tip, so as not to interfere with the thread tightening.

As described above, the knotting yarn supplied from the shuttle 5 completely ties the looped end of the net fabric.

The net fabric is similarly fixed to the right board 1' by the thread ring end fixing device 3, and the right board 1 of the shuttle 5 is fixed as shown in FIG.
Move the entire board to the left so that the position of ' with respect to the yarn loop end fixing device is symmetrical with point P, and then tie one net fabric to the end of the yarn loop. After the mesh is advanced by 1/2 pitch by the loop end fixing device 3, the above-mentioned knotting thread is tied in the same manner to the thread loop end of the mesh fabric end placed on the right substrate 1'.

Since the present invention is constructed as described above, the flat netting can be sewn by successively joining the left and right ends of the netting with a zigzag knot using a zigzag knot.

When tying the frogmata thread knot at the end of the thread loop at the end of the net fabric,
The ends of the net fabric can be securely fixed at multiple points, and the thread can be easily and quickly and reliably tied with a machine configuration, without the need for manual labor as in the past.In addition, a pair of thread ring ends can be fixed. By arranging the devices symmetrically, it is possible to easily create a device for sewing two pieces of net fabric together.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the general structure of a fishing net tying device according to an embodiment of the present invention, FIG. 2 is an external view of the shuttle, and FIG. Figures 4 and 5 are the same as in Figure 2, respectively.
1■, ■-■ and V-■ longitudinal cross-sectional views shown in the arrow direction,
Figure 6 is a diagram showing the structure of the thread ring end fixing device on the right board, Figure 7
The figure is an exploded configuration explanatory diagram of the thread ring end fixing device on the right board, Figure 8 is a perspective view showing the shape of the left and right clamping claws, Figure 9 is an explanatory diagram of the circulating operation status of the holding claws, and Figure 10 is a mesh A schematic diagram showing the state in which the knot of the net ring thread at the end is fixed by the supporting claw of the left thread ring end fixing device, Figure 11 is a diagram showing the frog knot, Figure 12 is a diagram showing the tying procedure, FIG. 13 is a diagram schematically showing the thread path of the tying thread during the thread tying operation, FIG. 14 is an explanatory diagram of the operation of the thread path turning fork, and FIG. 15 is an explanatory diagram of the operation of the thread tightener. Each number used in the drawings indicates an appendix. 1, 1'... Board, 3... Yarn ring end fixing device, 5... Shuttle, 6... Upper reciprocating part, 7... Thread tightener, 8... Thread path turning fork, 14... Yarn winder , 17... Bombshell,
18...Coil spring (for tension), 21...Knot thread guide piece, 22...Coil spring, 23...Slit, 30
, 31...Pinching claw, 32...Feeding claw guide, 33, 34
...Push-up arm, 35...U-shaped plunger, 41...
...Push-up cam, 42...Cam follower, 43...Push-up rod, 44...Upper claw feed housing, 45...Lower claw feed housing, 4
6...Feeding plunger, 47...Returning Kakuda pad, 48
... Upper guide surface, 50 ... Lower guide surface, 51 ... Net lifting plate.

Claims (1)

[Claims] 1. A substrate that can be moved forward and backward as well as in the left and right directions;
A thread ring end fixing device that is attached to this board and has a plurality of pairs of clamping claws that move in the front and rear directions relative to the board and grip the bent part of the thread to be bound at two locations, making it stick out and fixing it. a thread tying shuttle having a built-in tying thread spool and reciprocatingly driven at a fixed position in a direction perpendicular to the substrate surface; and a thread path turning fork that is hooked at a point and displaces the hooked portion of the knotting thread in a right angle direction, and the thread path of the knotting thread that is pulled out from it by the reciprocating movement of the shuttle is provided. The yarn to be bound is passed through the inside and outside of the bent portion of the yarn to be tied sequentially, and is further surrounded by the yarn to be tied and a tying yarn that is hooked on the outside of the bent portion of the yarn to be tied by the thread path turning fork. The frogmata thread tying device is configured to change the fixing position of the bent portion of the thread to be bound by moving the board in the front-back and left-right directions while the shuttle is stopped so that the thread passes through the space where the thread is tied. 2 Claim 1 in which the knotting thread pulled out from the shuttle is supported by an elastic body within the shuttle
Frogmata thread tying device described in Section 1.