JPS5915874B2 - Device that continuously feeds yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for continuously supplying yarn to a circular knitting machine, a shuttleless loom, or the like.

j5 Conventionally, for example, in a circular knitting machine, when the bobbin runs out of thread, an automatic detection device installed in the knitting machine automatically stops the circular knitting machine, and the operator either supplies a new bobbin or , A method in which the innermost tail thread of the yarn supply bobbin and the outermost thread end of the new bobbin are tied in advance, and the thread is automatically transferred from the old bobbin to the new bobbin. The so-called Shiriitotsugi method is used.

In the former case, since the circular knitting machine was stopped every time the bobbin ran out of thread, the operating rate of the circular knitting machine was reduced, and many people were required to replenish the 35 yarn.

Next, in the latter case, the stoppage of the knitting machine can be avoided, but as in the former case, it takes considerable effort to replenish the bobbin and join the tail threads, and in addition, it takes a lot of effort to replenish the bobbin and join the tail threads. Transfer errors often result in stoppages.

Furthermore, in this case, the number of spare bobbins is at most two or three, and the frequency of replenishment work is still high. The present invention was invented in view of these points, and is a device that aims to automatically perform these operations. DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be given and detailed explanations will be given based on the drawings.

First, an outline of the mechanism and operation will be explained.

1 and 2 show perspective views of the entire embodiment, in which the device is mounted on a bobbin stand of a known circular knitting machine. In FIG. 1, one part (dotted chain line in FIG. 1) has been removed to avoid complication of the drawing, and the removed part is supplemented in FIG. 2.

As shown in FIG. 1, the apparatus of this embodiment includes a storage type feeder including a time specifying device, an automatic yarn end splicing device, that is, an automatic knotter, a yarn replenishing section, a bobbin feeding device, a conveyor chain for bobbin conveyance, and It is roughly divided into a yarn amount sensing device, a yarn end conveying unit, a yarn end conveying device, and a yarn end holding device. There are several types of storage type feeders that are publicly known, but in short, yarn feeding to the knitting machine can be done either continuously or intermittently. Good.

The knotter section includes a known knotter 2 such as a wiper's knotter or a fisherman's knotter, its operating solenoid 4, a thread path 5, an auxiliary guide rod 6 fixed to the thread path, and a thread path 5 and an auxiliary guide. It consists of an air cylinder 7 for moving the rod 6 back and forth.

The air cylinder 7 includes two pipes and electromagnetic valves 8 and 9 attached to each pipe. This knotter portion is located between the bobbin conveyor chains 17, 17' and the uppermost guide hook 18, which will be described later, and approximately 50 centimeters above the conveyor chains 17, 175.

Regarding the positional relationship of the knotters, the knotter 2 is located between the yarn end holder 11 and the suction pipe 12 and between the yarn path 5 and the auxiliary guide rod 6.

A line connecting the thread path 5 and the tip hook of the auxiliary guide rod 6 matches the thread guide groove (not shown) of the knotter 2, and also connects the thread end holder 11 and the suction pipe 12. The wire is attached so as to match the other thread guiding groove of the knotter 2. The yarn end conveyance section shown in FIG. 2 consists of two chain wheels 19 and 20, a nipper 22 attached to the conveyance chain 21, nipper cams 23 and 24, and a guide that constitutes the yarn end holding device shown in FIG. It consists of a rod 10, a yarn end holder 11 and a suction pipe 12.

In the middle of the suction pipe 12 is a solenoid valve 16 . Further, the guide rod 10, the yarn end holder 11, and the suction pipe 12 are
It is also connected to an air cylinder 13 for front and rear operation. The air cylinder 13 has two pipes and electromagnetic valves 14 and 15 provided for each pipe.

As shown in FIG. 1, the yarn supply section includes a bobbin supply device 2.
5 and conveyor chains 17, 17' for conveying bobbins. The bobbin supply device 25 consists of a semi-cylindrical bobbin holder and a suction nozzle 26, and the suction nozzle 20 is attached to the side surface of the bobbin supply device 25 in parallel.

The bobbin holder 25 is located on the same center line as the conveyor chain 17, which will be described later, and is attached at an angle of about 45 degrees with the horizontal plane.

The conveyor for conveying bobbins consists of a pair of conveyor chains 17 and 175 and a bobbin stand 2 that is passed between both chains.
7 and a bobbin guide 105 for collecting empty bobbins.
In addition, there is a control drum 61 for moving and operating the above-mentioned device, and a time designation device (shown in FIG. 10).
There is a control box with a built-in.

Hereinafter, the operation of each device will be explained in the order of operation.

First, to describe the overall operation centered on yarn supply, raw yarn is fed from the bobbin on the conveyor chain 17, 17', through the yarn path 5, the uppermost guide hook 18, and then to the storage.
It is fed to feeder 1.

The known storage feeder 1 has a built-in motor 37 shown in FIG. 5, and winds and stores a predetermined amount of yarn on the surface of a drum 28 at a yarn speed higher than the yarn feeding speed to the knitting machine.
The drum 28 pauses. When the thread on the drum 28 runs out again, it rotates again and stores the thread. However, the yarn is fed continuously from the storage feeder to the knitting machine. On the other hand, the amount of yarn on the drum 28 is sensed by the detection ring 29 on the drum 28, and the yarn feeding to the storage feeder 1 becomes intermittent. In this way, the present invention
Taking advantage of the intermittent supply of yarn to the storage feeder, when yarn supply to the storage feeder stops, new bobbins and empty bobbins are automatically replaced.
The present invention provides a switching device.

First, FIG. 5 shows a wiring diagram of the device of this embodiment.

The part surrounded by a dashed-dotted line shows the part inside the storage feeder, but it will be explained in relation to Fig. 1.
Detector ring 29 on drum 28 is mechanically connected to switch 33 in FIG. A motor 37 for driving the drum 28, a small solenoid 31, a switch 32, a transformer 36, and a switch 33 are located within the storage feeder. When the amount of yarn on the drum 28 of the storage feeder in FIG. 1 runs out, the detection ring 29 contacts the switch 33 in FIG. 5 to the left, the circuit of the solenoid 31 closes, and the switch 32 turns on. Then, the driving motor 37 of the drum 28 rotates, the drum 28 rotates, and the yarn is wound up on the drum 28. When a predetermined amount of yarn is wound, the position of the detection ring 29 is raised by the yarn layer, and the switch 3 is turned on.
3 will touch the right side. This closes the circuit of the small solenoid 102, turns on the switch 103 operated by the solenoid 102, and operates the solenoid 45.

FIG. 10 shows the configuration of a time designation device within control box 56 that is associated with the operation of solenoid 45. As shown in FIG. 10, the time designation device includes the aforementioned solenoid 45, a clutch 51 connected thereto, a screw shaft 48, a slider 49 attached to the screw shaft, and a contact attached below the slider 49. It consists of a pressure roller 50 and a rail 54 in contact with it.

When the solenoid 45 is actuated by the actuation of the semi-cylindrical threaded clutch 51 acting on the screw shaft 48 of the time designation device, the clutch 51 is pressed against the screw shaft 48, and the rotation of the screw shaft 48 causes the clutch 51 to be pressed against the screw shaft 48. Move from right to left in Figure 10.

Normally, the clutch 51 is separated from the screw shaft 48 by the force of the spring 52.

Also, the switch 10 operated by the small solenoid 100 in the circuit of the other small solenoid 46 in FIG.
1 is normally in the on state, and only when both switch 91 and switch 59 are on and the circuit of small solenoid 36 is closed, small solenoid 46 is energized and switch 101 is opened.

When the switch 33 touches the right side, the solenoid 45 is operated and the small solenoid 46 is also energized, the switch 47 is closed, and the motor 41 that turns the screw shaft 48 of the time designation device shown in FIG. 10 starts rotating.

While the clutch 51 is operated by the rotation of the screw shaft 48, the slider 49 is pulled by the clutch 51 and moves from right to left along the screw shaft 48 and the guide rod 53, When the action of the solenoid 45 is cut off, the force of the spring 52 causes
When the clutch 51 is lifted, the force of the spring 57 causes the slider 49 to return to its initial position. The rail 54 has a good electrical conductor in one shaded portion 55, and the rest is made of an insulator. The contact pressure roller 50 and the good conductor portion 55 in the rail 54 constitute a switch 59 in FIG. Initially, the mover 49 is in the position shown by the broken line in FIG. 10, and the switch 59 is in the open state.

When the motor 41 in FIG. 10 rotates, the screw shaft 48 rotates via the worm 106 and the worm wheel 107, and the slider 49 moves to the left, and when moving slightly to the left, the contact roller 50 is moved. When the good conductor part 55 in the rail 54 comes into contact with the rail 54, the switch 59 in FIG. 5 closes, and when the contact pressure roller 50 leaves the good conductor part 55 in the rail 54, the switch 59 in FIG. 5 opens. Then, switch 33 in FIG.
When the contact moves to the left, the rotation of the motor 41 is stopped, the action of the solenoid 45 is cut off, and the slider is moved to the left by the spring 37.
It returns to its original state with the power of. The switch 33 is switched to the right, yarn feeding to the storage feeder is stopped, then the yarn layer on the drum 28 of the storage feeder 1 is exhausted, and by the time yarn feeding to the storage feeder 1 starts. The length of the good conductor portion 55 is determined so that the contact pressure roller 50 and the good conductor portion 55 in the rail are in contact only when there is sufficient time to complete the yarn splicing work to be described later. That is, the switch 59 in FIG. 5 stops the yarn feeding to the storage feeder 11 in the explanation of the operation of the storage feeder 1 mentioned above, and then starts feeding the yarn to the storage feeder 11. Until then, the thread splicing operation is in the ON state only when there is time left to complete it, and in all other cases it is in the OFF state. Also, as shown in Figure 5,
When both the switch 59 in the circuit of the small solenoid 36 and the phototube switch 91 (described later) are closed, the small solenoid 100 in the same circuit operates, turns off the switch 101, and stops only the motor 41 at a specified time. The solenoid 45 fixes the mover 49 of the aforementioned time designation device (when activated) in its current position.

That is, the switch 59 in FIG. 5 is kept in the on state. On the other hand, the amount of yarn in the yarn feeding bobbins on the conveyor chains 17, 171 is detected by a phototube switch 91 (shown in FIG. 5) comprising a light emitter 34 and a light receiver 35.

A ring-shaped reflecting plate is attached to the surface of the paper tube of the bobbin, and when the amount of yarn is almost gone, the light emitted from the projector 34 hits the reflecting plate on the surface of the paper tube and is received by the receiver 35, and the switch is activated. 91 is turned on.

The amount of yarn remaining on the bobbin at the time of detection must be at least the amount stored in the storage feeder 11 for one time, and the remaining amount is determined by adjusting the sensitivity of the phototube.

In this way, when the thread on the bobbin runs out and the switch 35 shown in FIG. The drive motor 44 rotates, and the control drum 61 begins to rotate.

Control drum 61 is built into control box 56 shown in FIG.

FIG. 9 shows a developed view of the surface of the control drum 61. There are six control tracks on the control drum 61, where i is the switch for the solenoid valve 8 of the air cylinder 7 in FIG. 1, j is the solenoid valve 9 of the cylinder 7, and K is the air cylinder 13 is a solenoid valve 15, t is for controlling the solenoid valve 14 of the same cylinder 13, and m is a switch 48 (in Fig. 5) of the solenoid 4 for the knotter 1, which will be described later.
n controls the switch 60 of the electromagnetic clutch (in FIG. 5) 38 of the conveyor chain 17. Turn on each switch at the filled-in portion of the track in Figure 6. When the control drum 61 begins to rotate, as shown in FIG. 6, the solenoid valve 8 of the air cylinder 7 is first opened, and the piston is pushed to the right in the latter figure. (See Figure 6)
As shown in FIG. 1, the thread path 5 directly connected to the piston and the auxiliary guide rod 6 move back to introduce the thread into the thread guide groove of the knotter 12. The tip of thread path 5 is fitted with a ring,
There is a thread running through it. Since this thread moves from side to side when being unwound from the bobbin, it does not stay in a fixed place. Therefore, in order to ensure insertion into the groove, a guide plate 62 is attached to the auxiliary guide bar 6 and the knotter 12. 63 is provided.
At the same time, the solenoid valve 15 for the air cylinder 13 also opens, causing the piston to retreat, and the thread end holder 11 and suction pipe 12, which are directly connected to it, to move back, and the thread end of the new bobbin is transferred to the other end of the knotter 2. Insert the thread into the thread guide groove. Furthermore, when the control drum 61 rotates, the switch 42 (in FIG. 5) of the solenoid 4 for the knotter 1 in FIG. 1 is turned on, and the solenoid 4 in FIG. Pull lever 3 to perform thread tying work.

Immediately after pulling the lever 3, the power to the solenoid 4 is cut off, and the lever returns to its original position by the force of a spring (not shown) inside the knot. Furthermore, the control drum 61
rotates, and then the solenoid valve 9 of the air cylinder 7 (in Fig. 6) opens and the piston moves forward, and at the same time the thread path 5 directly connected to the piston and the auxiliary guide rod 6 move forward. The valve 15 opens, the thread end holder and the suction pipe move back further, the knotter 12 pulls out the thread that has been tied, and the thread is also removed from the thread end holder 11.

After that, the solenoid valve 14 is activated by a command from the control drum.
is opened, and the guide rod 10, yarn end holder 11 and suction pipe 12 move forward to the initial position.

The control drum 61 rotates, and first the switch 60 of the electromagnetic clutch 38 for the conveyor chain 17 is turned on.
turned on. This switch 60 is structured so that once it is turned on, it remains on unless the circuit is disconnected somewhere. The electromagnetic clutch 38 is on a shaft 69, which is constantly rotated by the motor 43.
When the electromagnetic clutch 38 is turned on, the power is transferred to the chain 6.
The signal is transmitted from the six chain wheels 65 and shaft 67 to the chain wheels 68, and the conveyor chain 27 is moved.
Bobbin 71 on bobbin stand 27 on conveyor chain 17
begins to move, the phototube switch 91 shown in FIG. 5, which had been turned on due to reflection from the empty bobbin, is turned off, the power to the small solenoid 36 is cut off, and the rotation of the motor 44 is stopped. The control drum 61 also stops.

At the same time, the power to solenoid 100 is cut off, and switch 1
01 is turned on again, the motor 41 of the time designation device turns again and the mover 49 of the time designation device (Fig. 10) moves, and the contact between the contact pressure roller 50 and the good conductor portion 55 of the rail 54 is separated, i.e. , switch 59 in FIG. 5 is turned off. The motor 41 is then connected to the storage feeder 11.
In order to feed the yarn to the thread, the switch 33 in Fig. 5 rotates until it touches the left side, but from the predetermined position on the left side of the threaded shaft 48 in Fig. 10, the left side has no thread and the shaft is thinner than the threaded part. As a result, the mover remains in place. When switch 33 in FIG.
is returned to its original state by the force of the spring 57.

The movement of conveyor chain 17 meshes with chain 66.

When the counter switch 40 is moved by a preset amount, the counter switch 40 changes from being on the left side in FIG. 5 to being on the right side.

This causes the conveyor chain to stop moving. At the same time, switch 60 is also turned off. The feeding of new bobbins onto the conveyor takes place as the conveyor chain 17 moves.

That is, when the conveyor chains 17, 17' begin to move, the bobbin stand 27, which is to receive the next bobbin, moves up along the chain wheels 70, 7V. (Refer to Fig. 7) The bobbin stand 27 has a so-called funnel-shaped shape with a small cone and a rod standing on top of the cone. As soon as the lever 75 enters the tube, it collides with the leaf spring 78, and when the stopper is released, the center spindle 79 is pushed out by the force of the spring 76 and goes further into the paper tube of the bobbin 73. When the chain 17 moves further, the central spindle 79 picks up the bobbin and takes it out from the bobbin supply device 25, fits into the cone at the bottom of the bobbin stand, and settles in a predetermined position. A part of the retainer 25 is covered with a cover to prevent other bobbins from being lifted up at this time. When the lowermost bobbin 73 in the bobbin supply device 25 is taken out, the remaining bobbin falls down due to its own weight and is stopped by the stop member 80 at the lowest point of the bobbin supply device 25, and the preparation force for the next supply is taken. (See Figure 7) As shown in Figure 4, the thread end of the bobbin newly placed on the bobbin stand is
It extends so as to connect between the suction nozzle 26 on the side surface of the bobbin supply device 25 and the new bobbin, and comes into contact with the illustrated attachment guides 81 and 82. When supplying a new bobbin to the bobbin supply device 25, put the thread end into the suction nozzle 26 for about 50 centimeters, and then put it into the bobbin supply device 25.

The guide wheel 90 is placed on the upper surface of the conveyor chain 17 so that the center lines of both bobbins pass through the thread path 5.
, 91' are inclined inwardly.

When the empty bobbin moves downward (to the left in FIG. 1) along the chain wheel 18 due to the movement of the conveyor chain 17, it falls down and is guided to the collection box along the bobbin guide 105.

Cone stand 27 that popped out when taking out a new bobbin
As the central spindle moves to the right under the conveyor chain 17, its head is pushed back into its original position by the cam plate 37 (shown in FIG. 1).

When the contacts of counter switch 40 in FIG. 5 change to the right, electromagnetic clutch 39 on shaft 69 in FIG. 1 is turned on and transmits power to chain wheel 20. In FIG. 2, which shows this point in detail, the yarn end conveying chain 21 begins to move. The counter switch 40 is structured to automatically return to its original contact with the left side when the circuit of the electromagnetic clutch 39 is disconnected.

As shown in FIG. 2, one nipper 22 is attached to the conveyance chain 21, as shown in FIG. 3.

The nipper 22 shown in FIG. 3 consists of a tube-shaped main body 22, a head 83 at the tip that passes through the tube, a round head 84 for contacting a cam at the other end, a shaft 86, and a spring 85.
In FIG. 2, as the conveyance chain 21 moves, the nipper 22 comes up along the chain wheel 20 from below, and the shaft (shown in FIG. 3) 86 of the nipper 22 moves upward.
The round head 84 of the nipper body 2 is pushed by the cam 23.
There is a gap between 2 and head 83.

In this state, as shown in FIG. 4, the thread comes up between the attachment guides 81 and 82 and catches the thread end of the new bobbin. Furthermore, when the nipper 22 is raised, the round head (Fig. 3) 84 of the nipper 22 separates from the cam 23, and the spring 8
It returns to its original position with a force of 5, and the end of the thread is gripped between the main body and the head 83.

In this state, lift the end of the thread up to a part of the knot.

Then, it rotates along the chain wheel 19 and threads the yarn ends onto the guide rod 10 and the yarn end holder 11 in this order. When the yarn comes just in front of the suction pipe, the round head 84 of the nipper is pushed out again by the cam 24, the nipper opens, and the yarn end is sucked into the suction pipe. The conveyance chain 31 further advances,
The cam 89 hits the switch 74 of the chain wheel 20, and the circuit of the electromagnetic clutch 39 opens and stops, but the conveyance chain 21 moves a little due to inertia, and the cam 89 separates from the switch 74. At the same time, the contacts in switch 40 return to the left side. A solenoid valve 1 is installed in the suction pipe 12.
6 is provided, and is controlled to remain open from just before the knotter is activated until the end of yarn end conveyance. Further, the yarn end holder 11 has a structure as shown in FIG. 8, and the gripping force can be adjusted by adjusting the strength of the spring 88.

In this manner, the present invention automatically removes the empty bobbin during the yarn feeding stop period of intermittent yarn feeding to the storage feeder 1.
This is a device that continuously supplies yarn to a knitting or loom, etc., without stopping, by switching to a new bobbin.

In this embodiment, the thread path 5 and the thread end holder 11 are moved back and forth using air cylinders 7 and 13, but it is also possible to use a solenoid, a spring, etc. Further, although a phototube is used as a sensor for the yarn layer on the bobbin, other sensing devices such as a detection filler or an electric contact method may also be used.

In this embodiment, yarn feeding to the knitting machine has been described, but
It can also be applied to continuous yarn feeding to looms, winders, yarn processing machines, etc.

Continuous supply is also possible for raw yarns that cannot be joined conventionally. in this way,
By using the apparatus of the present invention, it is possible to automate the yarn replenishment work, which is effective in reducing the replenishment work and saving labor.

[Brief explanation of the drawing]

FIG. 1 shows an overall perspective view of this embodiment. However, in order to avoid complication of the drawing, the yarn end conveyance chain section is shown separately in FIG. 1...storage feeder 1, 2...notsuta 1, 17...
... Conveyor chain, 21 ... Yarn end conveyance chain, 25 ... Bobbin supply device. FIG. 3 shows the nippers on the conveyor chain. FIG. 4 shows the thread end nip condition of the new bobbin. FIG. 5 is a wiring diagram of the device of this embodiment. 37...Storage feeder motor 44...Control
Drum drive motor, 41...Motor for time designation device, 91...Time designation switch. FIG. 6 shows a piping diagram of the two air cylinders 7 and 13. 8, 9, 15, and 14 are solenoid valves. FIG. 7 shows how a new bobbin is fed from the bobbin supply device 25 to the conveyor chain. FIG. 8 shows the structure of the yarn end holder. Figure 9 shows the control drum 6
FIG. 1 is a developed view of the surface of No. 1. Figure 10 shows the control
A time designation device in box 56 is shown. 41...
...Motor, 45...Solenoid, 54.
...Rule, 49...Mover.

Claims (1)

[Claims] 1 In a device that continuously supplies yarn using a storage type feeder, the system detects the time when the yarn wound on the feeder becomes full, the yarn feeding to the feeder stops, and the yarn feeding to the feeder starts again. The storage type feeder includes a time designation device that specifies the operation time to automatically join the thread ends of the new and old bobbins, and the storage type feeder that includes the time designation device automatically joins the thread ends of the new and old bobbins. A yarn amount sensing device configured to instruct operations to be continued, a storage type feeder including the time specifying device, and a new bobbin placed on a bobbin stand on a conveyor chain for conveying bobbins described later in conjunction with the yarn amount sensing device. A bobbin supply device having a bobbin holder for holding a bobbin for replenishment and a suction nozzle for suctioning the yarn end thereof, a storage type feeder including the time designation device, interlocking with the yarn amount sensing device and the bobbin supply device. a conveyor chain for conveying a bobbin, the conveyor chain for conveying a bobbin is configured to carry a new bobbin to a supply position, and receive the new bobbin from the bobbin supply device to a bobbin table which has reached a delivery position with the bobbin supply device by rotation; In conjunction with the storage type feeder, the yarn amount sensing device, the bobbin supply device, and the bobbin conveyor chain, the bobbin conveyor chain transfers the yarn end of the new bobbin to the supply position, and transfers the yarn end of the new bobbin to the bobbin supply position. A yarn end conveying device that takes the yarn out from the suction nozzle of the device and conveys it to the position of the automatic knotter described later, a storage type feeder including the time specifying device, the yarn amount sensing device, the bobbin supply device, and the conveyor chain for conveying the bobbin. and a storage-type feeder including a yarn end holding device that works in conjunction with the yarn end conveying device to hold the yarn end conveyed to the position of the automatic knotter described later in a predetermined position, and the time specifying device; In conjunction with the yarn amount sensing device, the bobbin supply device, the bobbin conveyor chain, the yarn end conveyance device, and the yarn end holding device, the yarn end of the new bobbin held by the yarn end holding device and the old A device that continuously supplies thread, consisting of an automatic knotter that is installed to automatically connect the thread ends of the bobbin.