JPH0849151A - Yarn shaking device for net knitting machine - Google Patents

Abstract

PURPOSE:To provide a yarn shaking device for a net knitting machine for miniaturizing and simplifying mechanism, enabling high-speed operation and facilitating adjustment of cam timing. CONSTITUTION:One end of a yarn shaking longitudinal lever 7 is forced through a cam follower against the cam face of a yarn shaking longitudinal cam 6 and the other end of the yarn shaking longitudinal lever 7 is connected through a rod to a yarn shaking frame 1. One end of a yarn shaking vertical lever 10 is forced through a cam follower against the cam face of a yarn shaking vertical cam 9 and the other end of the yarn shaking vertical lever 10 is connected through a rod to the yarn shaking frame 1. A laminar yarn shaking right and left cam 12 having a cam face on the outer periphery is fitted through a speed reducing mechanism 15 to a main shaft 3. A yarn shaking right and left lever 13 is supported on a shaft of part of the frame of a net knitting machine. The middle part of the yarn shaking right and left lever 13 is forced through a can follower against the cam face of the yarn shaking right and left cam 12 and the tip of the yarn shaking right and left lever 13 is connected through a rod and an L-shaped lever to the yarn shaking frame 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn swinging device of a knitting machine for knitting fishing nets and the like.

[0002]

2. Description of the Related Art A yarn swinging device of a knitting machine has a yarn swinging frame fixed to a movably supported yarn swinging frame. The yarn swinging device has holes for supporting and passing many warp yarns at predetermined intervals. A driving mechanism is provided for moving the thread swing up and down and front and back and left and right during the knotting process and immediately after the knotting.

This yarn swinging device is basically composed of a vertical movement mechanism, a horizontal movement mechanism, and a front-back movement mechanism.

As shown in FIG. 3, a vertical moving mechanism having a conventional general mechanical structure has a vertical moving cam 31 attached to a main shaft 30 of a knitting machine and a yarn swing vertical shaft 32 arranged in parallel with the main shaft 30. Then, while attaching a small lever 33 to the vertical shaft 32,
The large lever 34 is arranged so as to be engaged and connected to the main shaft 30 and the small lever 33. Then, the cam follower pivotally supported at the intermediate portion of the large lever 34 is engaged with the cam groove 31a formed on the side surface of the vertically moving cam 31, and further on the support lever 35 mounted on the thread swing vertical shaft 32. The thread swing frame 36 is supported, and the thread swing frame 36 is moved up and down by the rotation of the thread swing vertical shaft 32.

Further, as shown in FIG. 4, the left-right movement mechanism is
A left-right moving cam (drum type cam) 38 is pivotally supported so as to rotate at a speed of 1/2 with respect to the main shaft 30, and a left-right moving lever 39 is pivotally supported below the left-right moving cam 38. To do. Then, the cam follower 39 provided at the end portion of the left / right moving lever 39 is engaged with the cam groove 38a formed on the outer peripheral surface of the left / right moving cam 38, and the thread swing frame 36 is moved to the left / right moving lever via the rod 40. The end of 39 is connected, and the thread swing frame 36 is moved to the left and right by the rotation of the gear and the left and right moving cam 38.

Further, as shown in FIG. 5, the forward / backward moving mechanism is such that the forward / backward moving cam 41 is attached to the main shaft 30 and the main shaft 3
The yarn swinging front-rear shaft 42 is arranged in parallel with 0, the tip of the lever 43 attached to the yarn swinging front-rear shaft 42 is connected to the yarn swinging frame 36 via the rod 44, and the yarn swinging front-rear shaft 42 is moved back and forth. Attach the lever 45. Then, a cam follower provided in the middle portion of the forward / backward moving lever is engaged with the cam surface of the forward / backward moving cam 41 to move the forward / backward moving cam 41 attached to the main shaft 30,
The yarn swinging frame 36 is moved back and forth by the rotation of the yarn swinging front-back shaft 42 that rotates via the front-back movement lever 45 and the cam follower.

[0007]

As described above, in the conventional yarn swinging device, the vertical movement mechanism, the horizontal movement mechanism, and the forward-backward movement mechanism respectively have the vertical axis 32, the horizontal axis 37, the horizontal axis 37, and the front-back axis of the thread. Since it is necessary to provide the shaft 42, there is a problem that these mechanisms are increased in size and required driving torque is also increased, which hinders high-speed operation of the knitting machine. Further, in the left-right movement mechanism, the left-right movement cam 38 is mounted on the thread swing left-right shaft 37 that is supported separately from the main shaft, and all the other cams are mounted on the main shaft. However, there is a problem that the structure becomes large and complicated because a drum cam is used for the left-right moving cam 38.

The present invention has been made in view of the above points, and can reduce the size and simplification of the mechanism, enable high speed operation, and facilitate cam timing adjustment. The purpose is to provide a device.

[0009]

In order to achieve the above object, a yarn swinging device of a knitting machine of the present invention supports and passes a large number of warp yarns on a movably supported yarn swinging frame. A thread swing with a hole is fixed, and the thread swing is moved up and down,
In a yarn swinging device of a knitting machine that moves back and forth and left and right, a plate-like yarn swinging front and rear cam having a cam surface on the outer circumference and a yarn swinging up and down cam are attached to the main shaft of the knitting machine, and a tightening roll is used for tightening. A thread swinging front and rear lever and a thread swinging up-and-down lever, which are substantially L-shaped, are rotatably supported on a tightening shaft that supports the thread swinging forward and backward levers, and one end of the thread swinging front and rear lever is attached to a cam surface of the thread swinging front and rear cam via a cam follower. The other end of the thread swinging front / back lever is connected to the thread swinging frame via the rod, and one end of the thread swinging up / down lever is pressed against the cam surface of the thread swinging up / down cam via the cam follower. The other end of the thread swing up / down lever is connected to the thread swing frame via a rod, and a plate-shaped thread swing left / right cam having a cam surface on the outer circumference is mounted on the main shaft via a speed reduction mechanism. Is supported by a part of the frame of the knitting machine, The middle part of the left and right levers is biased via a cam follower so as to be pressed against the cam surface of the thread swing left and right cam, and the tip of the thread swing left and right lever is connected to the thread swing frame through a rod and an L-shaped lever. It

[0010]

[Operation / Effect] In the yarn swinging device having such a structure, the yarn swinging holding the warp yarn is moved in the vertical, horizontal, and front-back directions during the knotting process, for example, the operation of winding the warp yarn around the lower hook is performed. . In this case, in the up-and-down direction, the rotation of the thread swing up / down cam caused by the main shaft causes the thread swing up / down lever to rotate via the cam follower, and the rod to move up or down, so that the thread swing frame and the thread swing frame fixed there. Swing goes up or down.

In the left-right direction, rotation of the thread swing left and right cam causes the thread swing left and right lever to swing through the cam follower, and the rod moves in the left and right direction through the rod and the L-shaped lever, whereby the thread swing frame is moved. (Thread swing) moves left and right.

In the front-back direction, the yarn swinging front-back lever is rotated by the rotation of the yarn swinging front-back cam via the cam follower, and the rod is moved forward or backward, whereby the yarn swing frame (thread swing) is moved forward or backward. Moving.

Further, according to such a yarn swinging device, the yarn swinging front and rear levers and the yarn swinging up and down levers are supported on the tightening shaft,
Since the thread swing left / right lever is pivotally supported by the frame, it is not necessary to provide a dedicated thread swing up / down axis, thread swing left / right axis, and thread swing front / rear axis as in the conventional case, and the structure can be downsized. Since the required driving torque can be reduced, the knitting machine can operate at high speed.

The thread swing left and right cams, which are conventionally mounted on different shafts, are arranged on the main shaft, and all the operation cams including the thread swing front and rear cams, the thread swing up and down cams, and the upper hook operating cams are Since it can be mounted on the main shaft, the timing of the cam can be easily adjusted. Moreover, since the thread swing left and right cams formed by the drum cams are conventionally plate-shaped cams, the structure can be simplified and the mechanism can be downsized.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a plan view of a yarn swinging device of a knitting machine, and FIG. 2 shows a left side view thereof. 1 is a thread swing frame movably supported up and down, front and back, and left and right,
A yarn swing 2 which is horizontally arranged below the upper hook and has a large number of holes at regular intervals for supporting and passing warp yarns is fixed on the yarn swing frame 1.

A main shaft 3 of the knitting machine is horizontally supported by a frame 4 of the knitting machine and is rotationally driven at a constant speed by a drive motor (not shown). Reference numeral 5 denotes a fastening shaft which is arranged in parallel with the main shaft 3 and which is supported by the frame 4, and is rotated by a predetermined angle at a predetermined timing by an arm attached to the main shaft 3. A clasping roll is attached to the clasping shaft 5 through a clinging roll lever (not shown), and when the lower hook pulls the warp thread to pass through the boat shape during the knotting process, Pull backwards to tighten the nodule.

Reference numeral 6 denotes a yarn swinging front-back cam which is attached to the main shaft 3 and rotates together with the main shaft 3. The thread swing front-back cam 6 is a disk-shaped plate-shaped cam, and a cam surface is formed on the outer peripheral surface. 7
Is a thread swinging front and rear lever formed in a substantially L shape, rotatably supported on the fastening shaft 5, a cam follower 7a is attached to one end, and the other end is a thread swinging frame via a horizontal rod 8. Connected to 1.

The yarn swinging front-back lever 7 is biased so that the cam follower 7a at the tip thereof is constantly pressed against the cam surface of the yarn swinging front-back cam 6, and the yarn swinging frame 1 is rotated according to the rotation of the main shaft 3, that is, the yarn swinging front-back cam 6. Move (thread swing 2) back and forth. The yarn swinging front-back cam 6, the yarn swinging front-back lever 7, the cam follower 7a, and the rod 8 constitute a yarn swinging front-back mechanism.

Reference numeral 9 denotes a yarn swinging up / down cam arranged on the right side of the yarn swinging front / rear cam 6, which is attached to the main shaft 3 in the same manner as the front / rear cam 6 and rotates together with the main shaft 3. This thread swing up / down cam 9
Is a disk-shaped plate-shaped cam, and a cam surface is formed on the outer peripheral surface. Reference numeral 10 denotes a thread swinging up-and-down lever formed in a substantially L shape, which is rotatably supported by a fastening shaft 5, a cam follower 10a is attached to an upper end, and a lower end is connected to the thread swinging frame 1 via a rod 11. To be done.

The yarn swinging up / down lever 10 is biased so that the cam follower 10a at the tip thereof is constantly pressed against the cam surface of the yarn swinging up / down cam 9, and the yarn swinging frame 1 is rotated according to the rotation of the main shaft 3, that is, the yarn swinging up / down cam 9. Move (thread swing 2) vertically. The thread swinging up / down cam 9, the thread swinging up / down lever 10, the cam follower 10a, and the rod 11 constitute a thread swinging up / down mechanism.

Reference numeral 12 denotes a thread swing left / right cam arranged on the right side of the thread swing up / down cam 9, which is mounted on the spindle 3 via a speed reduction mechanism 15 which is a combination of gears, and is at a speed half that of the spindle 3. Is driven to rotate.

The thread swing left and right cams 12 are disk-shaped plate-shaped cams, and have a cam surface formed on the outer peripheral surface. Reference numeral 13 denotes a thread swing left / right lever vertically supported on a side surface of the frame 4 via a shaft 14, and a cam follower 13a is attached to an intermediate portion of the thread swing left / right lever 13, and the cam follower 13a is attached to the thread swing left / right cam 12. The thread swing left / right lever 13 is biased toward the cam 12 by a coil spring or the like so as to be constantly pressed against the cam surface.

On the other hand, a substantially L-shaped L-shaped lever 17 is horizontally supported by the frame 4 via a bracket 18, and one end of the L-shaped lever 17 is attached to the tip of the thread swing left / right lever 13 via a rod 16. Be connected. The other end of the L-shaped lever is connected to the thread swing frame 1 via the rod 19.

Therefore, when the thread swing left / right lever 13 swings back and forth by the thread swing left / right cam 12, the thread swing frame 1 moves in the left / right direction via the rod 16, the L-shaped lever 18, and the rod 19. The thread swing left / right cam 12, the thread swing left / right lever 13, the rod 16, the L-shaped lever 18, and the rod 19 constitute a thread swing left / right mechanism.

The yarn swinging front-back mechanism, up-down mechanism, and left-right mechanism as described above are installed near the left and right frames of the knitting machine, and drive the yarn swinging device 2 in the front-back, up-down, and left-right directions. Reference numeral 20 is a comb provided at the knot, and 21 is a boat shape provided with a weft thread at the front thereof.

Next, the operation of the yarn swinging device in the knitting machine having the above construction will be described.

In the knotting step, for example, the thread swing 2 holding the warp thread first rises to the uppermost portion. In this case, the rotation of the thread swinging up / down cam 9 by the main shaft 3 causes the thread swinging up / down lever 10 to rotate counterclockwise in FIG. 2 at a predetermined timing via the cam follower 10a, and the rod 11 rises. The swing frame 1 is lifted, and the thread swing 2 is lifted to a predetermined position at a predetermined timing.

Next, while the upper hook rotates, the thread swing 2 descends, and the warp thread is wound around the upper hook. In this case, the rotation of the thread swing up / down cam 9 causes the thread swing up / down lever 10 to rotate in the clockwise direction of FIG. 2 via the cam follower 10a, and the rod 11 descends to fix the thread swing frame 1 and the thread swing frame 1 there. The thread swing 2 thus moved down.

Next, for example, the lower hook penetrates the lower portion of the upper hook, and the thread swing 2 moves in a vertical triangle to wind the warp thread around the lower hook. That is, the thread swing 2 moves to the right or left while rising, and moves to the right or left while descending, thereby winding the warp thread around the lower hook and finally moving backward.

In this case, in the vertical direction, the yarn swinging up / down lever 1 is rotated by the rotation of the yarn swinging up / down cam 9 as described above.
0 rotates via the cam follower 10a, and the rod 11 moves up or down, whereby the thread swing frame 1 and the thread swing 2 fixed thereto move up or down.

In the left-right direction, the thread swing left / right lever 13 is rotated by the rotation of the thread swing left / right cam 12 to move the thread swing left / right lever 13 to the cam follower 13a.
The thread swing frame 1 (thread swing 2) moves left and right at a predetermined timing by swinging via the rod 16 and moving the rod 19 in the left-right direction via the rod 16 and the L-shaped lever 17.

In the front-back direction, the yarn swinging front-back lever 7 is rotated by the rotation of the yarn swinging front-back cam 6 via the cam follower 7a, and the rod 8 is moved forward or backward.
The thread swing frame 1 (thread swing 2) moves at a predetermined timing before or after.

When the lower hook is hooked with the warp thread, the lower hook moves forward to pull out the warp thread from the lower portion of the upper hook, and the thread passes through the lower portion of the boat shape 21, that is, the weft thread. Then, the knots are removed from the upper hooks, the eyes are tightened, and the knots in a horizontal row are formed.

After that, the thread swinger 2 operates so as to transfer the warp thread to the recessed portion on the left or right side of the comb 20, and in this case as well, by the operations of the front-rear mechanism, the up-down mechanism, and the left-right mechanism as described above. The thread swing 2 moves up and down, left and right, and back and forth by a predetermined distance to change the position of the warp thread comb 20.

[Brief description of drawings]

FIG. 1 is a plan view of a yarn swinging device of a knitting machine showing an embodiment of the present invention.

FIG. 2 is a left side view of the same device.

FIG. 3 is a perspective view of a vertical movement mechanism of a conventional yarn swinging device.

FIG. 4 is a perspective view of a left-right movement mechanism of a conventional yarn swinging device.

FIG. 5 is a perspective view of a back-and-forth moving mechanism of a conventional yarn swinging device.

[Explanation of symbols]

1-thread swing frame, 2-thread swing, 3-spindle, 4-frame, 5-clamping shaft, 6-thread swing front and rear cam, 7-thread swing front and rear lever, 7a-cam follower, 8-rod, 9-thread Swing up / down cam, thread swing up / down lever, 10a-cam follower, 11-
Rod, 12-thread swing left / right cam, 13-thread swing left / right lever,
13a-Cam follower, 14-axis, 15 reduction mechanism, 16
-Rod.

Claims (1)

[Claims] 1. A knitting machine for moving a yarn swing, which has a hole for supporting and passing a large number of warp yarns, is fixed on a movably supported yarn swing frame, and moves the yarn swing vertically, forward and backward, and left and right. In the yarn swinging device, a plate-shaped yarn swinging front and rear cam having a cam surface on the outer periphery and a yarn swinging up and down cam are attached to the main shaft of the knitting machine, and on the screwing shaft that supports the tightening roll for performing the tightening, A substantially L-shaped thread swinging front-back lever and a thread swinging up-down lever are rotatably supported, and one end of the thread swinging front-back lever is urged to press the cam surface of the thread swinging front-back cam via a cam follower. The other end of the thread swinging front and rear lever is connected to the thread swinging frame via a rod, and one end of the thread swinging up and down lever is urged to press the cam surface of the thread swinging up and down cam through a cam follower. The other end of the swing up / down lever is a thread swing frame via a rod. A plate-shaped yarn swing left / right cam having a cam surface on the outer peripheral surface is attached to the main shaft via a reduction mechanism, and the yarn swing left / right lever is pivotally supported on a part of the frame of the knitting machine. The middle part of the swing left / right lever is biased via a cam follower so as to be pressed against the cam surface of the thread swing left / right cam, and the tip of the thread swing left / right lever is connected to the thread swing frame via a rod and an L-shaped lever. A yarn swinging device for a knitting machine.