JPH0152490B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention provides a method for removing full bobbins on a spindle, which have been wrapped around the bobbin and the back end after the bobbin is full, all at once from the spindle using a simultaneous tube changing device, and placing them on a tube holding device. Replace all prepared empty bobbins and spindles at once.
This invention relates to a tail thread cutting device in a spinning machine or a yarn twisting machine equipped with a so-called simultaneous tube change device.

Prior Art and its Problems Conventionally, a tail thread cutting device for a spinning machine or the like equipped with a simultaneous tube changing device is as follows. A tail thread spool is provided below the bobbin insertion part of each spindle, and when the spinning machine etc. is stopped in response to a full bobbin signal, the ring rail is lowered from the winding position during its inertia rotation, and the tail thread connected to the full bobbin is lowered. is wound onto the tail thread spool, and then the full bobbin is doffed from the spindle by operating the pipe changing device all at once, thereby tearing and cutting the tail thread connected between the tail thread spool and the full bobbin. Next, after inserting the empty bobbin into the spindle, the spinning machine etc. is restarted while raising the ring rail from the lowermost position to the winding start position, thereby continuously transferring the spun yarn connected to the roller part to the empty bobbin on the spindle. It is designed to be rolled up.

As described above, cutting the tail thread in a conventional spinning machine equipped with a simultaneous tube changing device requires a special spindle with a tail thread spool, and the tail thread is wound around the tail thread spool each time the pipe is full. During the operation of a spinning machine, etc., the spindle rotates at a high speed of more than 10,000 times per minute with the tail thread wrapped around the tail thread spool, but the spindle is rotated at a high speed of more than 10,000 times per minute. Power consumption increases due to increased weight and increased air resistance due to rotation. In addition, the tail thread wound around the tail thread spool can be removed with a wire brush or the like during operation, but this is not only extremely dangerous, but also reduces the number of spindle rotations and causes the spun yarn to become twisted. This caused spots, and furthermore, the removed tail threads were scattered by centrifugal force and became fluff, deteriorating the working environment. If this is avoided and the tail strings are manually removed while the machine is stopped, it will take a considerable amount of time and reduce operational efficiency, which is not preferable. In addition to the above, by attaching the tail thread spool to the spindle, the height of the spindle becomes high, which not only causes core runout, but also makes it impossible to share the spindle with a spinning machine, etc. that does not require simultaneous tube change. In addition, the tail yarn spool has unevenness for locking the tail yarn, which is not only dangerous, but also the wind caused by high-speed rotation can cause a lot of fuzz in the spun yarn at the bottom of the bobbin during winding. In addition, there is a limit to the ability to cut the tail thread by pulling and shredding, and in the case of thick or strong threads, cutting errors occur, which is not always satisfactory.

Purpose and Summary The present invention addresses the drawbacks of the prior art and provides a tube holding device in which the full bobbin on the spindle, which has been wrapped around the body and end after the tube is full, is pulled out from the spindle by a simultaneous tube changing device. In a spinning machine or the like that is doffed upward, a guide rail is installed in front of the frame of the spinning frame, and a traveling machine is disposed on the guide rail to run along the spindle row of the frame by a driving means, Furthermore, a pair of upper and lower rotary blades with a part of the outer circumferential side overlapped in the radial direction is attached to this traveling body.
The rotary blades are equipped with two sets, each of the rotary blades is configured to rotate in a predetermined shearing direction, and the shearing action of the upper and lower pair of rotary blades disposed on the traveling body, The spindle of all weights and the end thread connected to the fully loaded bobbin after being unloaded are sequentially cut from one side to the other, thereby solving the drawbacks of the conventional device.

Embodiment Hereinafter, the present invention will be explained in detail by way of an embodiment shown in the drawings. In the drawings, 1 indicates a spinning machine, a yarn twisting machine, etc. (hereinafter collectively referred to simply as a spinning machine)
A simultaneous pipe change device 2 is attached to the spinning machine 1. As is well known, many types of this simultaneous pipe changing device 2 have been proposed, and many of them are in practical use. The system is to replace the full and empty tubes by inserting the empty bobbin 5 into the spindle 3 from which the full bobbin 4 has been extracted, and then replacing the full and empty tubes. It is as follows. Reference numeral 6 denotes a dotting bar to which a number of bobbin grippers 7 corresponding to the number of three spindles of the spinning machine 1 are attached, and is given a predetermined vertical movement by a vertical movement device 8 based on a Scott-Ratssel type strict linear movement mechanism. A vertical movement device 8 is connected to a longitudinal movement device 9. As shown in the drawing, the forward and backward movement device 9 includes a screw rod 11 rotated by a screw gear 10.
is screwed onto the main shaft 12, and the vertical movement device 8 is attached to the main shaft 12. Therefore, the main shaft 12 moves forward and backward by the forward and reverse rotation of the screw gear 10, and the vertical movement device 8
Since the dotting bar 6 moves back and forth toward or away from the spinning machine 1, the dotting bar 6 moves up and down and back and forth in a set trajectory in a set order, and the bobbin gripper 7 grips the full bobbin 4 and the empty bobbin 5. Then, when all the spindles are filled, the empty bobbins are replaced, that is, the tubes are replaced.

In the above embodiment, the vertical movement device 8 is a Scott-Ratssel type strict linear movement mechanism, and the longitudinal movement device 9 is a screw gear 10. However, the present invention is not limited to this. Any other mechanism may be used as long as it moves up and down and back and forth, and the type of simultaneous pipe switching device is not limited to the above. achieves the purpose of this application.

Next, the tail thread cutting device 13 of this embodiment will be explained. The tail thread cutting device 13 includes a cutting device 14 that runs along the front surface of the spinning machine 1, a guide rail 15 that guides the movement of the cutting device 14, and a drive device 16 that provides running force, that is, driving force, to the cutting device 14. It's like this. It should be noted that each of the above-mentioned devices is naturally provided on both the R and L sides of the spinning machine 1, but since the configurations are the same on both sides, the explanation will be given only on the R side. The guide rail 15 has a square cross-sectional shape, is attached to a plurality of attachment pieces 18 provided at appropriate locations on the spindle rail 17, and is arranged so as to correspond to a spindle row constituted by a large number of spindles 3. The left and right ends thereof extend further left and right than the spindle row and are at standby positions 19, 19a.
Furthermore, the installation position of the guide rail 15 shall be set so that the guide roller 20 of the cutting machine 14 and the front end of the ring rail 21, which will be described in detail later, do not interfere with each other. The upper surface of the guide roller 20 serves as a running surface 22, and the lower surface thereof serves as a housing portion 24 for a belt 23 of a drive device 16, which will be described in detail below.
Next, the drive device 16 is as follows. A motor 25 that rotates forward and reverse at either the left or right end of the spinning machine 1
A pulley 26 is attached to the other end, and the belt 23 is suspended between the pulley 26 and the pulley 25a of the motor 25, and the belt 23 is stored in the storage part 24 of the guide rail 15, so that when the belt 23 rotates, Take precautions against risks. Note that the belt 23 can be replaced with a steel tape, a wire rope, or a chain; however, in the case of a chain, both pulleys 25a and 26 will of course become sprockets.

Finally, the cutting machine 14 is as follows. A drive shaft 28 is attached to the side wall of the traveling machine body 27 facing the spinning machine 1 side so as to face each other with an appropriate interval, and a guide roller 20 is attached to the shaft end protruding outside the traveling machine body 27.
A pulley 29 is fixed to each shaft end in the traveling body 27, and an auxiliary roller 3 is provided on the bottom surface of the traveling body 27.
By fitting the guide roller 20 to the guide rail 15, the auxiliary roller 30 comes into contact with the lower front end surface of the spindle rail 17 and maintains the running posture of the traveling body 27. Furthermore, the traveling aircraft 27
By attaching a weight 31 of an appropriate weight to the bottom, the running posture becomes more stable. Next, a connecting plate 3 is installed on the side wall of the spinning machine 1 on the traveling body 27.
2 is connected to the belt 23 using studs 33 or other suitable connecting devices, and the connection is made as shown in FIG. 3 in order to prevent interference between the mounting piece 18 and the connecting plate 32. Next, the connecting plate 32 is bent so as to straddle the guide rail 15 and fixed to the lower belt 23 with rivets 33. The connecting plate 32 is attached to the belt 23 on the lower side because the attachment process is simple, and there is no problem even if it is attached on the upper side.By attaching the connecting plate 32 to the belt 23 as described above, When the motor 25 performs forward and reverse rotation, the cutting machine 14 is pulled by the belt 23 and runs on the guide rail 15 to the left or right in FIG. 1, and its posture is maintained by an auxiliary roller 30. The wheels are designed to provide stable driving.

Next, the rotary blade pair 55 of the cutting machine 14 will be explained. As shown in FIGS. 3 and 4, the pair of rotary blades 55 includes two rotary blades 34 and 34a arranged vertically at a predetermined distance on both sides of a storage chamber 35 protruding from the top of the traveling body 27. A shaft 36 is rotatably mounted so that a part of the outer circumferential side overlaps in the radial direction, and the overlapping parts are in close contact with each other, and a pulley is attached to either the upper or lower shaft 36 at the shaft end. 37 is installed. Storage room 3
The left and right sides of 5 are rotary blades 34, as shown in FIG.
A guide portion 38 having a Y-shaped opening toward the overlapping portion of the guide portion 34a is provided, and furthermore, guide plates 39 are attached above and below the opening of the guide portion 38, respectively. 40,4
0a is an intermediate pulley, and an intermediate shaft 42 is rotatably held in a bearing 41 attached to the inner wall of the traveling body 27.
The mounting position is located approximately between the guide roller 20 and the two pairs of left and right rotary blades 55, 55 provided on the left and right sides of the storage chamber 35, and the intermediate pulley 40 is attached to the pulley 29. The intermediate pulley 40a is attached so as to be in the same phase as the pulley 37, and belts 43 and 44 are attached to each pulley in the following manner. That is,
As shown in FIG.
0, and the belt 44 is attached to both cutters 3.
4, 34a pulley 37 and intermediate pulley 40a
Hang it in a triangular shape. Therefore, motor 25
rotates forward, and the cutting machine 14 is pulled by the belt 23 and the fourth
When traveling in the direction of arrow 45 in the figure, the lower rotary blade 34 provided on the right side rotates in the direction of the arrow, and the upper rotary blade 34a that is in close contact with the rotary blade 34 rotates in the direction of the arrow due to friction, causing the upper and lower sides to rotate in the direction of the arrow. It acts so that the object (tail string) that has come into contact with the rotary blades 34, 34a is caught in the intersection between the two. Furthermore, motor 2
5 reverses and travels in the direction of arrow 46 opposite to the above, the upper and lower rotary blades 34, 34a on the left side rotate as indicated by the arrows in FIG. Also, the rotary blades 34, 3
The rotational speed of 4a can be set to the optimum rotational speed by variously changing the diameter ratio of pulleys 29, 37 and intermediate pulleys 40, 40a.

Next, the most preferred embodiment of the present invention will be described. While the spinning machine 1 is in operation, the cutting machine 14 is on standby at a standby position 19 on either the left or right side of the guide rail 15, as shown in FIG. When the spinning machine 1 is fully loaded, the ring rail 21 is moved to the second
When the spinning machine 1 is lowered from the position of the imaginary line to the position of the solid line shown in the figure, the body winding 47 and the tail winding 48 are formed on the full bobbin 4. Then, when the spinning machine 1 comes to a complete stop, the simultaneous pipe changing device 2 is activated. Start pipe switching. The cutting of the tail thread in this embodiment is performed by cutting the tail thread 51 until the full bobbin 4 pulled out from the spindle 3 is attached to the peg 50 of the spinning machine 1 or the tube holding device 49 attached to the spinning machine 1. However, for ease of understanding, one cycle of the operation of the simultaneous pipe switching device 2 will be explained first with reference to the operation diagram shown in FIG. 5. FIG. 5a shows the standby position of the simultaneous pipe changing device 2, at which time the dotting bar 6 is inserted under the spindle rail 17 and operates in the following order. First, the longitudinal movement device 9 is activated to move the dotting bar 6 backward from the standby position shown in FIG. After the dotting bar 6 is raised to the highest position shown by the imaginary line in FIG. Move forward so that it is directly above the
The doffing bar 6 descends and grips the full bobbin 4 as shown in FIG. After inserting the full bobbin 4 into the peg 50 as described above, the tube holding device 4
9 holds the empty bobbin 5 in advance, and inserts the empty bobbin 5 into the spindle 3 by moving the dotting bar 6 according to the order from a to d in FIG. Then, the simultaneous pipe switching device 2 returns to the standby position shown in FIG. 5a and prepares for the next pipe switching.

The above is one cycle of the tube changing operation by the simultaneous tube changing device 2. In this embodiment, the tail string 51 is cut in the middle of the tube changing operation as follows. When the full bobbin 4 is gripped in FIG. 5 d, the dotting bar 6 reaches the highest position as shown in FIG. 5 e and pulls out the full bobbin 4 from the spindle 3.
The tail string 51 is pulled out from the bottom, and this tail string 51 is
As shown in the figure, it is spirally wound around the spindle 3 to form a loop winding 52, which extends from the upper part of the spindle 3 to the lower part of the full bobbin 4 (Fig. 5e). Next, the dotting bar 6 moves to the highest position at the retreating end, as shown in FIG. The dotting bar 6 passes from the position shown in FIG. 5e to the position shown in FIG.
However, when the dotting bar 6 starts descending, the tail thread 51 connected between the spindle 3 and the full bobbin 4 gradually relaxes, and when it descends to the vicinity of the position shown in FIG. 5 g, the degree of relaxation is maximum. If they are lowered as they are, they will gradually become in a tensioned state, and finally the tail string 51 will be stretched between them in a tensioned state.

In this embodiment, when the dotting bar 6 reaches the position shown in FIG.
Stop the descent of the spindle 3 and full bobbin 4.
When the tail string 51 connected therebetween is held in a relaxed state and then a normal rotation command is issued to the motor 25 to cause it to rotate in the normal direction, the cutting machine 14 moves toward the standby position 19a on the opposite side from the standby position 19. (The left side in FIG. 1, the right direction of the arrow 45 in FIG. 4) runs on the guide rail 15, and the pair of upper and lower rotary blades 34, 34a on the right side in FIG. However, in FIG. 1, the tail thread 51 connected between the spindle 3 at the right end of the spindle row and the full bobbin 4 is guided by the guide plate 39 and the guide part 38, and when it touches either the upper or lower rotating blade, it is The tail thread 51 is guided to the intersection of the two rotary blades 34, 34a and is reliably cut by the shearing action thereof.
In this embodiment, the tail thread 51 is cut by loosening the tail thread 51 connected between the full bobbin 4 and the spindle 3, and shearing the relaxed tail thread 51 using a pair of upper and lower rotating blades. Since the cut yarn 51 connected to the spindle 3 is pulled back toward the spindle by the yarn tension at the time of cutting, the loop winding 52 is unraveled and the spun yarn 53 is released from the draver 54. The empty bobbin 5 is inserted into the spindle 3 without coming off, and when restarted, the spun yarn 53 is reliably wound onto the empty bobbin 5. As described above, the cutting machine 14 is pulled by the belt 23 and runs on the guide rail 15, so the tail thread 51 connected between the full bobbin 4 and the spindle 3 is moved as the cutting machine 14 runs. The shearing action of the pair of upper and lower rotary blades 34, 34a sequentially cuts the thread from one side to the other, and when the cutting is finished, it stops at the standby position 19a on one side and waits until the next time to cut the tail thread. . In the case of cutting the tail thread next time, the motor 25 rotates in reverse, and the cutting machine 14 runs in the opposite direction from the standby position 19a to the standby position 19 to cut the tail thread 51, and the rotary blade 34 at this cutting time , 34a constitute a pair of rotating blades 55 on the opposite side. When the cutting of the tail thread 51 is completed, the stopped inverter 6 resumes its movement and the full bobbin 4 is removed.
is attached to the peg 50 of the tube holding device 49, and then the empty bobbin 15 is held and attached to the spindle 3.
Insert into. In the above explanation, the dotting bar 6 is stopped when cutting the tail thread 51, but the descending speed of the dotting bar 6 from the position f to g in FIG. 5 is made extremely low.
After the cutting is completed, the speed may be returned to normal speed. Further, the starting and stopping of the cutting machine 14 can be arbitrarily selected from manual or automatic. As detailed above, it is most preferable to hold the tail thread 51 in a relaxed state and cut it in this state, but the application of the present application is not limited to this, and as shown in FIG. From the highest position, the full bobbin 4 is attached to the tube holding device 49.
The cutting position does not matter as long as it is at a position until tension is applied to the tail thread 51 until it is inserted into the peg 50 of the thread.

Next, the tail thread cutting device 13 can also be implemented in the following modifications. In the above embodiment, the cutting machine 14 is driven by a motor 25 that rotates in forward and reverse directions.
and the belt 1 rotated by this motor 25.
5, but the drive means is not limited to this; it is also possible to attach a motor directly to the shaft end of one of the drive shafts 28 and run the cutting machine 14 by rotating this motor in forward and reverse directions. Well, rotary blade 3
4 and 34a may be rotated either by attaching a motor to the shaft 36 of one of the rotary blades, or by using a belt or the like from a motor attached to the drive shaft 28. Furthermore, in the above embodiment, two pairs of rotating blades 55 are provided on both left and right sides of the traveling body 27.
55, but for example, in Fig. 4, only the right rotating blade pair 551 is installed, and the tail thread 51
The cutting machine 14 may be returned to the standby position 19 and kept on standby every time cutting is completed.

Effects As described above, in the present invention, the full bobbin on the spindle, which has been wrapped around the bobbin and the tail after the bobbin is full, is pulled out from the spindle all at once by the simultaneous pipe changing device and doffed onto the pipe holding device. In a spinning machine or the like, a guide rail is installed in front of the frame of the spinning frame, and a traveling machine is provided on the guide rail to run along the spindle row of the frame via an appropriate drive means. The traveling machine is equipped with one or two pairs of upper and lower rotary blades whose outer circumferential sides are partially overlapped in the radial direction, and each of the rotary blades of the pair of rotary blades is rotated in a predetermined direction. By the shearing action of a pair of upper and lower rotating blades disposed on the traveling machine, the tail thread is cut in sequence so as to sequentially cut the tail thread connected to the spindle of each weight and the full bobbin after unloading. Since the cutting device is configured, it is possible to reliably cut the tail yarn over the entire spindle regardless of the type of fiber or the yarn count.
Moreover, since the tail thread cutting device of the present invention cuts the tail thread by the shearing action of the pair of upper and lower rotating blades,
Unlike conventional tail thread cutting devices, there is no need to apply tension to the tail thread, and the tail thread can be cut while keeping the thread connected to the spindle and the fully loaded bobbin in a relaxed state. This prevents the tail yarn on the spindle side after cutting from being pulled back to the spindle side by the yarn tension at the time of cutting, and prevents the traveler from coming off (referring to the spun yarn coming off from the traveler), which can cause yarn breakage when restarting. The occurrence can be eliminated. Therefore, there is no need for a tail end holding means such as a brush in conventional tail thread cutting devices, and there is no need to check whether the traveler has come off and spliced the thread before resuming operation of the machine, and there is no need to change the pipe. By automatically restarting the operation of the spinning machine etc. after the end, the labor-saving effect of the simultaneous tube changing device and the operating efficiency of the spinning machine etc. can be further improved. Furthermore, the tail thread cutting device of the present invention eliminates the need to attach a tail thread spool to the spindle of a spinning machine equipped with a simultaneous pipe change device, which solves the long-standing problem in spinning machines equipped with a simultaneous pipe change device. This method has an excellent feature of being able to solve all the problems of the above-mentioned tail thread spool system all at once.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is an enlarged sectional view taken along the line A-A in FIG. 1, and FIG. 3 is an enlarged view of the main part of FIG. 4 is a sectional view taken along the line B--B in FIG. 3 with the full bobbin removed, and FIG. 5 is an explanatory diagram of the operation. 1... Spinning machine, 2... Simultaneous pipe change device, 3... Spindle, 4... Full bobbin, 5... Empty bobbin, 13
... Tail thread cutting device, 14 ... Cutting machine, 15 ... Guide rail, 16 ... Drive device, 20 ... Guide roller, 23 ... Belt, 27 ... Traveling body,
34, 34a...Rotary blade, 47...Body wrap, 48...
...Shrimaki, 51...Shiri thread, 52...Loop winding, 55
...Rotating blade pair.

Claims (1)

[Claims] 1. In a spinning machine, etc., in which the full bobbin on the spindle, which has been wrapped around the body and end after the bobbin is full, is pulled up from the spindle by a simultaneous bobbin changer and doffed onto the bobbin holding device, A guide rail is installed on the front surface of the machine base of the spinning machine, and a traveling body that runs along the spindle row of the machine base by a driving means is installed on this guide rail. Equipped with one or two pairs of superimposed upper and lower rotary blades, each of the rotary blades of the rotary blade pair is configured to rotate in a predetermined shearing direction, and is disposed on the traveling aircraft. Top and bottom 1
A spinning machine equipped with a simultaneous tube changing device that uses the shearing action of a pair of rotating blades to sequentially cut the tail threads connected to the spindle of all spindles and the fully loaded bobbin after unloading, from one side to the other. The butt thread cutting device in etc.