JPH03180533A - Continuous yarn reeling of drum - Google Patents

Abstract

PURPOSE:To continuously reel the title yarn without causing waste yarn and end breakage by attaching plural drums to drum fixing shafts of creel stand, binding yarn end of front yarn drum at a shaft head side to yarn top of a rear yarn drum to end tails and successively drawing yarns. CONSTITUTION:At least two drums 2 and 3 are attached to one drum fixing shaft 1 of creel stand, yarn end 6 of a front yarn drum 2 fixed to a shaft head 4 side of the drum fixing shaft 1 is bound to yarn top 7 of the rear yarn drum 3 attached to a shaft root 5 side of an adjoining drum fixing shaft 1 to end tails 8, the yarn top of the front yarn drum 2 is drawn out in a shaft direction of the drum fixing shaft 1 through a first guide 10 to start reeling of yarn 9. When reeling of yarn of the front yarn drum 2 is completed, successively yarn of the rear yarn drum 3 is reeled from the yarn top 7 of the rear yarn drum 3 connected to the yarn end 6 of the front yarn drum 2 to continuously reel yarn on the drums.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention can be used in general textile processing applications in which yarns from a drum are continuously unraveled.

Drum is a term used in this industry,
This refers to a package in which a relatively large amount of thread is wrapped around a core of cheese.

(Prior Art) In order to pull out yarn from a drum attached to a creel stand and unravel it continuously for a long time, it is necessary to replace the drum during operation.

The simplest and conventionally common method is when the machine stops due to the connection destination, such as when dotting the yarn that has been unraveled, or when there is less yarn left on the drum. At this point, the drum is temporarily shut down and replaced with a new drum. However, with this method, it is necessary to temporarily stop operations to replace the drum, the remaining yarn is wasted, and when the drum is replaced, the yarn needs to be rethreaded, making it easy to concentrate work. Furthermore, when the yarn of a drum is used up, there is a problem that the end of the yarn gets entangled with the yarn of an adjacent drum.

Therefore, in order to solve this problem, some methods have been adopted, imitating the unraveling of the pirn, by forming a pair of two drum mounting shafts, and hooking the drums to each pair. Make a tail splice with the thread tip of drum No. 2, and then
This is a continuous sloughing method in which sloughing begins with the first drum, and when sloughing is completed, the second drum is sloughed without stopping the operation.

(Problem to be Solved by the Invention) A drum generally has a large winding diameter, and is normally treated differently from a pirn, which has a small winding diameter. Furthermore, in order to rationalize pre-processing and transportation, the winding diameter tends to increase more and more.

On the other hand, in order to implement the above-mentioned continuous loosening method, it is necessary to increase the space in the frontage direction of the entire creel stand, and there is a problem that it cannot be adopted unless there is sufficient space. If you don't have enough space, there is no other good option, so you have no choice but to use thread, time,
We followed the traditional method, knowing that it would be a waste of effort.
-The reality is that the drums are replaced after the machine is stopped from time to time.

The present invention provides a method for easily pulling out yarn from two or more drums with large winding diameters in succession while minimizing the increase in space.

(Means for Solving the Problems) In order to solve the above problems, the present invention mounts at least two drums on one drum mounting shaft of a creel stand, By tying the thread end of the first thread drum mounted on the drum and the thread end of the rear thread drum mounted adjacent to the base side of the shaft plate of the drum mounting shaft for tail splicing, a yarn continuous layer of the drum that pulls out and unravels the yarn of the first yarn drum, and then continuously unwinds the yarn of the second yarn drum after the unraveling of the first yarn drum is completed; I propose a method.

Further, in the above method, covering the cheese gap between the drums mounted adjacent to each other on one drum mounting shaft,
In addition, we propose a drum continuous yarn layering method in which a cylindrical collar having the same axis as the drum mounting shaft is mounted between the drums.

Furthermore, in the cheese gap between the drums installed adjacent to one drum installation shaft, the inner diameter is larger than the drum installation shaft, the outer diameter is larger than the outer diameter of the cheese, and The present invention proposes a continuous yarn layering method for a drum according to claim (1), characterized in that a ring smaller than the outer diameter of the back yarn drum is inserted.

In order to reliably carry out the above three methods, using a holding guide installed outside the running track of the thread being unraveled,
While the first yarn drum is being unraveled, the tail spliced yarn between it and the back yarn drum is held away from the cheese gap, and then, while the back yarn drum is being unraveled, the holding guide is We also propose a drum continuous layer threading method in which the yarn is removed from the drum and run in accordance with the above three methods.

Here, cheese is used to mean the core of the drum.
In reality, paper tubes are often used.

The outer diameter of the drum at the time of installation refers to the outer diameter of the drum before the start of loosening. Furthermore, the running trajectory of the yarn during unraveling refers to the space that the yarn passes between the drum and the guide (hereinafter referred to as the first guide) that the yarn passes through first. say.

(Embodiments) Next, in order to facilitate understanding of the content of the present invention, specific examples will be given and explained in detail with reference to the drawings, but the present invention is not limited to these specific examples. .

FIG. 1 is an explanatory diagram regarding a specific example of implementation of the drum continuous thread unraveling method according to the present invention.

Two drums 2 and 3 are mounted on one drum mounting shaft 1 of the creel stand, and the thread tail 6 of the tip drum 2 mounted on the shaft head 4 side of the drum mounting shaft 1 is adjacent to the thread tail 6 of the drum mounting shaft 1. A tail splice 8 is performed by tying the thread end 7 of the rear thread drum 3 mounted on the shaft root 5 side of the drum mounting shaft 1. The yarn tip of the yarn drum 2 is first pulled out through the first guide 10 in the axial direction of the drum mounting shaft 1, connected to the next process, and unraveling is started.

9 is a thread that is being unraveled. When the thread of the first thread drum 2 is unraveled, a tail splice 8 is made between the thread end 6 of the first thread drum 2 and the thread tip 7 of the back thread drum 3.
Unraveling of the back thread drum 3 starts continuously without stopping the operation. When the remaining yarn in the back yarn drum decreases, the operation is temporarily stopped depending on the circumstances of the yarn connection destination, for example, when dotting, and the remaining yarn is connected to the cheese 1 of the first yarn drum 2, the back yarn, and the drum 3. from the drum mounting shaft.

Either attach a new drum as a back thread drum to the drum mounting shaft (■) in the same manner as above, and install the removed conventional back thread drum 3 as a lead thread drum again, or
When the amount of remaining yarn is small enough to be used as waste yarn, a new drum is installed as the lead yarn drum, the yarns of both drums are joined by tail, and the operation is restarted.

Please note that the timing for tail splicing and drum replacement is
This is not limited to this specific example, but if there is a chance that the thread is to be stopped due to dotting or the like, the machine may be stopped depending on the occasion or taking into account the amount of yarn remaining on the drum.
It can be implemented as appropriate.

Normally, the purpose of the present invention can be achieved by the method described above, but depending on the conditions, the yarn at the tail splice 8 or before and after the tail splice 8 may be damaged in the gap between the cheese 1 (and the cheese 12 of the back yarn drum 3). The yarn may get caught in or bit into the part 13 or the tail groove 14 for fixing the end of the yarn, causing problems such as yarn breakage.

The invention according to claim (2) prevents such troubles of the invention according to claim (1) by attaching a collar.

FIG. 2 is an explanatory diagram of a specific example of the continuous drum loosening method according to claim (2).

The shape of the collar 15 to be attached is cylindrical, and is used to cover the gaps 13 between the cheeses 11 and 12.
It requires an inner diameter sufficient to cover the cheese and a length sufficient to cover the gap 13 of the cheese. However, of course, it is not preferable to make the outer diameter so large that it will interfere with the unwinding of the yarn on the rear yarn drum 3, and it is also preferable to make the outer diameter so large that it does not come into contact with the yarn wound on the drums 2 and 3. It is preferable that there be. The surface is
There are no particular restrictions on materials such as satin finish or hard chrome plating, as long as the yarn does not interfere with its running when it comes into contact with it. The material can be metal, plastic, etc. The collar 15 is fitted into both the cheeses 11 and 12 to close the gap 1.
Cover and use 3.

The axes of the drum mounting shaft 1 and the collar 15 are the same.

FIG. 3 is a drawing illustrating a specific shape of the collar 15. FIG. In the figure, (a) shows the basic shape. (b) is
This is an example of a preferable shape. In the example shown in (b), a ring-shaped projection 16 is provided on the inner circumferential surface of the collar 15, and both sides of the ring-shaped projection 16 are contact surfaces with the end surfaces of the cheeses 11 and 12. This makes it easy to position the drum. The shape of the protrusion 16 is not limited to a ring shape, but can be formed as long as the bobbin mounting position is determined.
Alternatively, two ring-shaped protrusions each having an outward facing side as a contact surface may be provided.

The invention according to claim (3), like the invention according to claim (2), prevents the trouble of the invention according to claim (1) by attaching a ring.

FIG. 4 is an explanatory diagram showing a specific example in which a ring 17 is inserted into the cheese gap 13 in order to carry out the continuous drum loosening method according to claim (3).

The shape of the ring 17 to be inserted is such that the inner diameter is the same as that of the drum mounting shaft 1.
It must be larger than the outer diameter of the This is because it needs to be easily attached to the drum mounting shaft 1 or the cheese 11 or 12. The outer diameter is larger than the outer diameter of the cheeses 11 and 12, and smaller than the outer diameter of the drum 3 at the time of installation. If the outer diameter is smaller than the outer diameter of the cheese, the yarn 18 being unraveled will come into contact with the cheese 11, and if it is larger than the outer diameter of the drum 3 at the time of installation, the yarn 18 being unraveled will come into contact with the cheese 11 at a steep angle. This is because the direction may be changed by the thread, which may cause the thread to break. Preferably, the outer diameter of the ring 17 is smaller than the minimum diameter of the running track 19 of the thread being unraveled. The traveling trajectory 19 of the yarn during unraveling shown in FIG. 4 corresponds to the case of its minimum diameter. This is because the yarn 18 being unraveled no longer touches the ring 17.

Here, to explain the travel trajectory 19 of the yarn being unraveled, the yarn 18 unraveled from the drum 3 runs between the drum 3 and the first guide 10, with the first guide 10 as the apex,
The outer circumference of the drum 3 is the circumference of the bottom surface, and the inside is unraveled while drawing a conical side surface that bulges outward, creating a so-called balloon-like shape.

The outward expansion is due to the centrifugal force acting on the yarn 18 during unraveling, and as the unraveling progresses, the traveling trajectory 1 of the yarn changes.
The diameter of 9 becomes gradually smaller.

The ring 17 may be fitted onto the drum mounting shaft 1 and sandwiched between adjacent cheeses 11 and 12, or may be fitted directly onto the cheese 11 or 12.

As with the collar 15, the surface of the ring 17 is not particularly limited, such as matte finish or hard chrome plating, as long as it does not interfere with the running of the thread when it comes into contact with it. The material can be metal, plastic, etc.

FIG. 5 is a drawing illustrating a specific shape of the ring 17. In the figure, (a) shows the most common flange-like shape, and (b) shows a modified example thereof. Note that the ring shown in (a) is fitted onto the drum mounting shaft 1, but (
The ring shown in b) is shown in a shape suitable for fitting directly into cheese.

FIG. 6 shows the method of claim (4) for more stably and reliably carrying out the yarn continuous layer wrapping method of the drum according to the present invention explained in FIG. 1, FIG. 2, or FIG. 4. ) is an explanatory diagram for explaining the means using the holding guide 20.

This means uses a holding guide 20 attached outside the traveling track 19 of the yarn 18 being unraveled to hold the tail splice 8.
, and the threads in the front and rear portions of the cheese in the gap 13 of the cheese.
When the thread drum 3 starts to unravel, the thread 1 being unraveled is released from the holding guide 20.
8 comes off naturally. So that it comes off naturally like this,
It is preferable that the shape and attachment of the holding guide 20 determine the position. The reason why it is attached at a position where it does not come into contact with the yarn 18 being unraveled is to avoid it becoming entangled or causing yarn breakage. The traveling trajectory 19 of the yarn shown in FIG. 6 corresponds to the case where the diameter is the maximum.

Note that 21 indicates a drum cap. Drum mounting shaft 1
A drum cap 21 is attached to the tip of the drum that is attached first.
is a preferred means of protecting the yarn during unwinding in the practice of the present invention.

(Example) Example 1 In order to confirm the effect of the present invention by comparing with the conventional method, 10 denier yarn was produced from a drum with an average winding amount of 4.7 kg using the drum continuous layer yarn method according to the present invention. , 7 filaments of nylon yarn was stretched 1.05 times, and then wound into a bobbin with a winding amount of 150 g. The apparatus used was a 46-spindle system and was operated for 20 days, with bobbin dotting performed nine times a day. The main data of the operation results are shown in Table 1. (Doff in the table is an abbreviation for dotfing, and the machine stopped during dotfing.) Example 1-1 is the method described in claim (1), and Example 1-2 is the method described in claim (1) using a cylindrical collar. 2), the method described in 1-
3 is an example of the conventional method as a comparative example, that is, the weight is operated without tail splicing, and the drum has no threads.
We adopted a method of replacing the drum with a new one at the next dotting.

In addition, the unfilled bobbin was spliced by rewinding bobbin winding until the winding amount became 150 g, and was not included in the full bobbin or the waste yarn.

From Table 1, it can be seen that the results of Examples 1-1 and 1-2 were much better than the results of Comparative Example 1-3 using the conventional method. Example 1 using a cylindrical collar
The result of 2 was the best.

The high yarn breakage rate in Comparative Examples 1-3 is mainly due to the end of the yarn getting entangled with the yarn of the adjacent drum at the end of yarn unraveling on the drum.

In addition, when implementing this example, the conventional device is
The installation remained as it was, but the drum mounting shaft was improved. Because the depth of the creel stand has increased accordingly,
Although the working area was slightly reduced, there was no need to increase the conventional area requirements.

Example 2 In order to confirm the effect of the present invention as set forth in claim (4) by comparing with the conventional method, the average winding f! 1 from a 4.8kg drum
A 4-denier, 7-filament nylon thread was drawn out, stretched 1.22 times, made into a 12-denier thread, and wound into a bobbin with a winding amount of 150 g.

The equipment used had 46 spindles and was operated for 20 days with nine dots per day. The main data of the operation results are shown in Table 2 in the same manner as in Table 1.

In Example 2-1, a continuous yarn unraveling method for a drum according to the present invention was carried out using a guide similar to that illustrated in FIG. Comparative Example 2-2 was a conventional method in which tail splicing was not performed and the drum with a small amount of yarn remaining was replaced when the winding bobbin was stopped for dotting.

The results of Example 2-1 were much better than those of Comparative Example 2-2. For reference, the reason why Comparative Example 2-2 has a higher waste yarn generation rate and a lower yarn breakage rate than Comparative Example 1-3 is that the drum was replaced with yarn remaining.

(Effects of the Invention) Although the drum continuous layer yarn wrapping method according to the present invention is not a completely continuous system, by winding a large amount of drums, it achieves an effect substantially close to that of a completely continuous system.

That is, by implementing the present invention according to claim (1),
Compared to the conventional method of interrupting operations and replacing the drum,
The threads of multiple drums are unraveled continuously, reducing the generation rate of waste threads and the rate of thread breakage, and improving work efficiency. In addition, by implementing the method using the cylindrical collar according to claim (2) or the ring according to claim (3), thread breakage that bites into the cheese gap is eliminated, and the thread breakage rate is reduced. It further decreased. Moreover, the combined use of the guide according to claim (4) has the effect that the transition of the tail splicing portion is performed smoothly, and there is no yarn breakage caused by this portion getting tangled with the cheese of the tip yarn drum.

Furthermore, in terms of space, there is no need to widen the opening of the entire creel stand, and the increase in the required area by implementing the present invention is extremely small.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram regarding a specific example of implementing the yarn continuous layer wrapping method of a drum according to the present invention. FIG. 2 is an explanatory diagram showing a specific example of the continuous drum loosening method according to claim (2). FIG. 3 is a drawing illustrating a specific shape of the collar shown in FIG. 2. FIG. In the figure, (a) shows the basic shape. (b) is an example of a preferable shape. FIG. 4 is an explanatory diagram showing a specific example in which a ring 17 is inserted into the cheese gap 13 in order to carry out the continuous drum loosening method according to claim (3). FIG. 5 is a drawing illustrating a specific shape of the ring shown in FIG. 4. In the figure, (a) shows the most common flange-like shape, and (b) shows a modified example thereof. FIG. 6 shows the method of claim (4) for more stably and reliably carrying out the yarn continuous layer wrapping method of the drum according to the present invention explained in FIG. 1, FIG. 2, or FIG. 4. ) is an explanatory diagram for explaining the means using a holding guide. 0 1 2 3 4 5 6 7 8 Drum attached shaft Tip thread drum Back thread drum Shaft of drum attached shaft 1 Drum Shaft root of attached shaft 1 Yarn end of tipped yarn drum 2 Yarn tip of back thread drum 3 Disassembly of splicing Yarn in the first guide Cheese in the first yarn drum 2 Cheese in the gap between the cheese 11 and the cheese 12 in the rear yarn drum 3 Tail groove collar protrusion ring Yarn 19 in the process of unraveling: Yarn in the process of unraveling Running track 20: Holding guide 21 Nidrum cap

Claims (4)

[Claims] (1) At least two drums are mounted on one drum mounting shaft of the creel stand, and the thread end of the tip drum mounted on the shaft head side of the drum mounting shaft is adjacent to the drum mounting shaft. By tying and tail splicing the yarn to the end of the end drum attached to the shaft base side of the drum, the yarn of the end thread drum is pulled out in the direction of the drum attachment axis, unraveled, and connected to the end of the end thread drum. After the unraveling is completed, the drum yarn continuous unwinding method continuously unwinds the yarn of the rear yarn drum. (2) A cylindrical collar that covers the cheese gap between drums mounted adjacent to each other and has the same axis as the drum mounting shaft is mounted between the drums on one drum mounting shaft. The continuous thread unraveling method for a drum according to claim (1), characterized in that: (3) In the gap between the drums mounted adjacent to one drum mounting shaft, the inner diameter is larger than the drum mounting shaft, the outer diameter is larger than the outer diameter of the cheese, and the initial 2. The continuous thread unraveling method for a drum according to claim 1, characterized in that a ring smaller in diameter than the outer diameter of the rear thread drum is inserted. (4) Using a holding guide attached outside the running track of the yarn being unraveled, while unraveling the first yarn drum, hold the tail spliced yarn between it and the back yarn drum. Claims (1), (2), or 2, characterized in that the thread is held away from the gap, and then, during the unwinding of the back thread drum, the thread is removed from the holding guide and run. (3) Continuous yarn unraveling method for drums.