JP2018070381A - Yarn connection means - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide yarn connection means for one work station of a textile machine for manufacturing cheese having a connecting prism in which a connection channel is closable during a connecting step by a lid element so that the connection channel can apply a pneumatic pressure caused by the connecting prism, and the lid element is configured in a tubular state including a yarn insertion slit and connecting means that causes the lid element to be rotatable within a limited range and positioned functionally as needed.SOLUTION: In the present invention, a lid element (25) functions as a rotary lid, and an inner diameter (ID) of the rotary lid is set according to an outer diameter (AD) of a main body (23) of a connecting prism (32), and the inner diameter (ID) of the rotary lid is slightly larger than the outer diameter (AD) of the main body (23) of the connecting prism (32).SELECTED DRAWING: Figure 4

Description

  In the present invention, the connecting channel capable of applying air pressure attributed to the following connecting prism during the connecting process has a thread insertion slit and thereby the following lid element is rotatable within a limit range and functional as necessary. And a yarn connection means for one workstation of a textile machine for producing cheese with a connecting prism that is closable by a tubularly configured lid element with a connecting means positioned on the surface.

  Pneumatically actuated thread connection means have been known for many years in the textile machinery industry, in particular in connection with cheese automatic machines, and there have been numerous applications, for example DE 42 40 728 A1 in part Is described in detail.

With such a thread connection means, the two ends of the thread can be twisted pneumatically as a knotless connection having approximately the same strength as the thread and ideally approximately the same appearance as the thread. .
For example, if a yarn breaks during the winding process at one workstation of an automatic cheese making machine, or if a cut is intentionally made to clean the yarn, both yarns made at that time The end is first moved back into the area of the thread connecting means by means of special pneumatic means.
That is, for example, an upper thread protruding onto the surface of the cheese is pulled back from the cheese by a so-called suction nozzle and inserted into the connection channel of the connection prism of the thread connection means.
The upper thread is further passed by the suction nozzle through thread sandwiching means disposed above the connection channel and thread cutting means disposed below the connection channel.

At the same time or shortly thereafter, usually after the winding interruption from the feed reel set in the winding position, usually from the spinning cup, the lower thread fixed to the so-called thread clamp is often , Picked up by a grab pipe capable of applying negative pressure and inserted into the connecting channel of the connecting prism.
The lower thread is also passed by the suction nozzle through a thread pinching means disposed below the connection channel and a thread cutting means disposed above the connection channel.

  Finally, the yarn ends are shortened by the yarn cutting means and sucked into so-called support and unwinding narrow pipes where they are prepared for the next connection process. In short, in the supporting and unwinding thin pipe, the yarn ends are untwisted sufficiently before being drawn into the connecting channel of the connecting prism by the yarn feeding means, and the short yarns are removed. Are placed opposite to each other in the connecting channel so that they can be finally twisted pneumatically.

  There are various embodiments of known and proven thread connecting means, i.e. not only with respect to the drive system of the various functional elements, but also with respect to the construction and the operating system of the connecting prism.

The functional elements of the thread connecting means are actuated at least in part by a cam plate drive, for example as detailed in Applicant's handbook “Autoconer 338” or as disclosed in DE 102 24 081 A1 .
In short, the thread connecting means is connected to the drive means provided in the workstation via a drive housing on which a so-called cam plate package is supported, for example, via a plug coupling.
In this case, each cam plate is connected to a functional element of the thread connecting means via a corresponding lever lever.

  However, such a thread connecting means that has proven itself has the disadvantage that it is structurally large, i.e. such thread connecting means each have a relatively large installation space at the workstation. I need.

Furthermore, DE 196 10 817 A1 and DE 199 21 855 A1 describe a thread connecting means having a grooved drum with a plurality of differently shaped groove tracks in a connecting drive train housing. . The grooved drums of these yarn connecting means are driven by a reversible stepping motor connected via a control wiring to the central control of the winder.
Then, control cams operating the function elements of the thread connecting means such as, for example, the connecting means cover, the thread cutting means, the thread clamping means, and the thread feeding means, through the corresponding lever arrangement in each groove track Is moving.

  However, the yarn connecting means according to DE 196 10 817 A1 or DE 199 21 855 A1 is very complex in view of its structure and is not only due to the relatively laborious grooved drum, Is costly.

  In connection with the thread connecting means, functional elements driven by one or more stepping motors are also known.

DE 10 2004 051 038 A1 includes, for example, a thread clamping means and a thread cutting means for fixing and shortening a thread end to be connected, and a thread end connection channel prepared in a support and unwinding thin pipe. Thread connecting means are described, each equipped with a control element driven by a motor, to which thread feeding means for positioning are connected.
Here, the control element is configured as a control segment having external teeth that are pivotably supported and mesh with a pinion gear of a specially controllable individual drive means. The control segment is connected with a thread clamping means, a thread cutting means, and a thread feeding means via an operation element.

  Otherwise, this causes the connecting channel of the connecting prism not only to be equipped with a lid element that can be closed during the connection process, but also to use no lid element, i.e. the connection channel is released during the connection process. Remaining thread connecting means are also known.

  The thread connecting means described in DE 38 08 814 A1, for example, without such a lid element, is inexpensive to manufacture but does not cause problems during operation, especially for heavy threads. Absent. That is, in such a thread connecting means that does not use a lid, particularly in the case of a heavy thread, when the connecting thread end blows connection air, at least a part of the connecting slit remains open from the insertion slit. , There is always the danger of being ejected from the connection channel of the connection prism.

  For the strength and appearance of a pneumatically created thread connection, a thorough preparation of the thread ends in the support and unwinding narrow pipe and the length of both thread ends overlapping in the connection channel are sufficient. Not only that, but it is also important that both thread ends are sufficiently twisted in the connecting channel of the connecting prism, so that the known thread connecting means thereby closes the connecting channel of the connecting prism during the connecting process. Often it has a lid element that can.

  Such a lid element is, for example, as described in DE 101 50 579 A1, a pivotable element that is pivotably supported and pivoted on the connecting channel of the connecting prism and closes the connecting channel during the connecting process It is configured as.

  However, such a pivotable supported lid element has various drawbacks.

A pivotally supported lid element not only requires a relatively large mounting space, for example, but usually requires an additional pressure element in order to reliably close the connection channel during the connection process. Yes.
In addition, in such a lid element that is pivotally supported and covers the connecting prism's connecting channel from above, Avivage (a fiber treatment agent containing oil) accumulates on the surface of the connecting prism during the winding process. As a result, there is always a risk that the lid element will not close tightly during the connection process.

  According to DE 101 50 591 A1, a further thread connection means is known, which has a prism element which is rotatably supported; that is, both prism parts are compressed air between them. It is configured to be freely rotatable between a connection position that forms a connection channel to which the thread is applied and a thread receiving position into which the thread end to be connected is inserted. Moreover, at least one of both prism parts has an opening for compressed air blowing.

  However, known thread connection means which are relatively compact compared to the thread connection means with these freely supported lid elements, and therefore require a relatively small mounting location, are also practical operations. Then, it was shown that there was not much meaning, and it did not spread practically.

  The same applies to the yarn connecting means described in DE-AS 1 535 828.

The yarn connecting means developed four years ago is constructed as a vortex chamber in which the connecting channel is pipe-shaped and is adapted to the length of the yarn end to be connected. That is, one metal block provided with a compressed air pipe is fixed with two pipe parts that are spaced slightly apart from each other and that do not move shortly and are provided with a longitudinal slit at the top.
Within the pipe part, a limited range of rotation is provided, which is also provided with a longitudinal slit, supporting a further pipe with operating pins.
Manually positioning the pipe part that functions as a vortex chamber using the operation pin so that the longitudinal slits of the part overlap each other and the thread end to be connected can be inserted into the thread connection means can do.

  From this so-called thread end insertion position, the pipe is manually rotated to a connection position by means of an operating pin, where the longitudinal slits of the pipe and pipe parts are closed and the compressed air flow is jetted into the vortex chamber. Can do.

  Starting from the thread connecting means according to the above prior art, the present invention is compactly configured and the connecting channel of the connecting prism is reliably closed during the connecting process even when the operation time is long. It is an object to develop a thread connecting means that is guaranteed.

  According to the present invention, according to the present invention, the lid element functions as a rotary lid, and the inner diameter of the rotary lid is set according to the outer diameter of the main body of the connecting prism. The inner diameter is solved by the thread connecting means characterized in that it is slightly larger than the outer diameter of the main body of the connecting prism.

  Advantageous forms of the invention are the subject matter of the dependent claims.

  The embodiment according to the invention has various decisive advantages, in particular compared to the previously common thread connection means in which the connection channel of the connection prism can be closed by a pivotally supported lid element. Have.

By configuring the lid element as a rotary lid that is matched to the outer diameter of the connecting prism body to which the inner diameter belongs, for example, an aviverge that inevitably accumulates on the surface of the connecting prism in the winding process is known. In the thread connection means, it has now been possible to reliably avoid deposits that, after a certain operating time, have caused the connection channel of the connecting prism to fail to close properly during the connection process. . In short, the inner diameter of the rotary lid is preferably attached to the outer diameter of the connecting prism to which it is attached, so that the harmful volume of the Avive on the main body of the connecting prism can be avoided at every connecting operation. Is set so that it can be scraped off. The difference between the inner diameter of the rotary lid and the outer diameter of the main body is particularly preferably in the range of 0.02 mm to 0.03 mm. In this range, it has been shown that it can be assured that Aviberg can be scraped off from the surface of the body with high reliability. Depending on the type of fibers to be connected and the amount of deposition or thickness of the AVE BIRGE diameter in the circumferential direction, the ratio of the inner diameter to the outer diameter is alternatively greater than 0.03 mm. It is also possible to adjust to be within a range of 0.1 mm or less. By doing so, it becomes possible to further reduce the manufacturing cost of the main body of the rotary lid and the connecting prism as compared with the preferable smaller difference, and a thread connecting means suitable for each fiber material to be processed. Can be provided.
Both these important parts can be produced relatively accurately, for example by means of a lathe, so that the production costs of the thread connecting means are kept within an acceptable range.

  A further advantage of the embodiment according to the invention is that the rotary lid supported on the body of the connecting prism is used to fix the rotary lid in the appropriate position of the connecting channel of the connecting prism during the connection process, i.e. It can be said that no additional support structure or measures to obtain the pressing pressure are necessary to securely close the connecting channel.

  In an advantageous embodiment, the connecting prism is also placed on the air distributor in the mounted state and is arranged relative to the thread insertion of the thread connecting means and the corresponding notch of the thread guide body.

  The arrangement of the connecting prism on the air distributor, the insertion of the yarn, and the positioning of the yarn guide body in the notch are advantageous because a yarn connecting means having a relatively compact structure can be realized in this way. In short, according to the yarn connecting means having the above characteristics, it is possible to optimally use the workstation area of the cheese automatic manufacturing machine, which is known to have no room.

  In an advantageous embodiment, in particular in the region where the thread insertion and thread guide bodies are each provided with a thread guide plate spaced from the outlet of the connecting channel of the connecting prism, the thread guide groove and at least part of the circuit It is obtained when it has a plurality of outlets configured in a funnel shape.

Such a configuration not only ensures that the thread end to be connected is easily and correctly set in the connection channel of the connecting prism, but also ensures that the thread end is working in the thread guide groove during the connection process. It has the advantage of being held.
The yarn end that can be inserted into the yarn guide groove of the yarn guide body and the yarn guide body without any problem from the funnel-shaped blowout port, in this case, can significantly limit the rotational movement of the yarn end during the connection process. Fixed under control. In short, during the connection operation, the hair end of the yarn end is avoided as much as possible so that the yarn end is smooth.

In addition, it is preferable that a lid | cover element is connected with separate motive power via a connection means, and can be electrically controlled via this.
In such an embodiment, only a relatively weak force is required for normal control of the rotary lid, so that a low-cost drive concept can be realized.

A particularly preferred embodiment is obtained in that the individual power is in particular configured as a stepping motor and connected via a control wiring to the workstation computer of the workstation.
As is well known, such a stepping motor can be controlled to an accurate angle in a simple manner according to the number of input electric impulses, and therefore does not require a large additional control cost.
Further, such a stepping motor can be purchased from a supplier at a relatively low cost as a mass-produced product, and also has high reliability and a long life.

In an alternative embodiment, the lid element is connected to the air distributor via a connecting means and a lever lever belonging to the connecting means, and is limitedly supported by the air distributor and can be rotated by an electric motor-driven drive means. Connected to the guide plate.
Such a configuration has an advantage that, for example, the location requirement of the yarn connecting means can be minimized. In short, the drive mechanism for controlling the lid element that takes up a relatively large space, which has been widely used in the past, can be replaced with a device that can save a lot of space.
With the switch and guide plate constructed and supported in this way and the electric motor type drive means belonging to it, the rotary lid can be positioned accurately at any time, i.e. the connection channel of the connecting prism is always highly reliable as required. Can be closed.

  In a further advantageous embodiment, the lid element further comprises at least one exhaust slit through which at least a part of the connection air blown into the connection channel of the connection prism can be vented during the connection process. doing.

Through such an exhaust slit, the so-called belly band formation is promoted during the connection process, which improves the tear strength of the yarn connection by about 10%.
However, in this method of improving the tear strength of the thread connection, the appearance is somewhat sacrificed. In short, such a belly band remains as a thickened portion.

  In an advantageous embodiment, the exhaust slit is arranged perpendicular to the connecting channel of the connecting prism and / or branches perpendicularly from the thread insertion slit of the lid element.

  In both cases, the connecting channel of the connecting prism is well ventilated during the connecting process and the resulting yarn connection has a high tear strength.

  Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

The side view which shows the workstation of the cheese automatic manufacturing machine provided with the thread | yarn connection means comprised by this invention. The top view which shows the thread | yarn connection means comprised by this invention. Sectional drawing which shows the thread | yarn connection means based on this invention perspectively from the front. Sectional drawing of the larger scale which shows the main body of a connection prism, and the rotary lid which belongs to it. The figure which shows the perspective description of the rotary lid | cover provided with the exhaust slit. The figure which shows the perspective drawing from the back of the rotary lid | cover which has an exhaust slit, and a connection prism.

  FIG. 1 shows a schematic side view of a workstation 2 of a textile processing apparatus for producing cheese, which in this example is an automatic cheese making machine, generally designated 1.

As is well known, such an automatic cheese making machine is equipped with a number of similar workstations at both ends (not shown), and a ring spinning machine which is a pre-process (not shown). , The yarn produced on the spinning cup 9 is rewound into the cheese (twill winding package) 15 having a larger volume.
After completion, the cheese 15 is delivered to a cheese transport means 21 having the entire length of the apparatus by a service unit that is automatically controlled (also not shown), and is thus arranged at the end of the apparatus. It is sent to the delivery station.

  Further, as shown in this example, such an automatic cheese manufacturing machine 1 is frequently provided with a physical distribution means dedicated to the apparatus as a spinning cup / empty case transport system 3, but in FIG. Of these, only the head carry-in section 4, the temporary storage section 5 that can be driven in the reverse direction, the lateral transport section 6 connected to the workstation 2, and the case return section 7 are shown.

In the spinning cup / empty case transporting system 3, the spinning cup 9 to the unrolled empty case is circulated in a direction perpendicular to the transporting part 8.
The spinning cup 9 obtained in the ring spinning machine is rewound into the cheese 15 having a larger volume at the unwinding position AS in the region of the lateral conveyance section 6 of the workstation 2.

Each workstation 2 is equipped with various means for this purpose which allow a normal winding operation of the workstation 2 which is also known and therefore not shown and described in detail.
The workstation 2 is, for example, a suction nozzle 12 capable of applying a negative pressure, which is movable by means of a rotary shaft 16 via a workstation computer 29 which controls the various working means of the workstation 2, respectively. 13, a grab pipe 11 that can also apply negative pressure, as well as two thread ends of the upper and lower threads that are operated in a pneumatic manner and can be interrupted by winding. Yarn connecting means 10 necessary for piecing is provided so as not to be substantially distinguished from the portion.
As suggested in FIG. 1, the yarn connecting means 10 is fixed to the workstation housing 33 of the workstation 2 by its housing, and is set somewhat behind the normal yarn path during the winding process.

  Such a thread connecting means 10 is usually equipped with a lower thread clamping means, a thread cutting means, and a thread feeding means supported rotatably, as is also known.

  The yarn connecting means 10 according to the present invention includes a connection (yarn splicing) prism 32 in which a connection (yarn splicing) channel 31 capable of applying air pressure can be closed by a lid element 25 during a connection (yarn splicing) operation. Yes.

  The lid element 25, which will be described in detail below with reference to FIGS. 2 to 4, 5, and 6, is rotatable within a limited range and is supported on the main body 23 of the connecting prism 32, and hence is hereinafter referred to as a rotary lid. .

  As can be seen from FIG. 1, the cheese 15 is rotatably supported in the winding frame 28 of the winding means 24 during the winding process, and its surface is interlocked with the cheese 15 in a frictional connection, for example. At the same time, it plays a role for normal traversing of the yarn sent to the cheese 15 during winding operation.

  Such an automatic cheese manufacturing machine 1 is usually further equipped with a central control unit connected to the workstation computer 29 of each individual workstation 2 via, for example, a device bus.

  FIG. 2 shows the thread connecting means 10 constructed according to the invention in plan view.

As can be seen, the rotary lid 25 of the connecting prism 32 is in a thread end insertion position that is freely accessible from above for insertion of the thread end connected here to the connection channel 31 of the connecting prism 32.
In this case, the connecting prism 32 has a connecting channel 31 which is placed on the so-called air distributor 17 together with the main body 23 and into which the connecting air holes 38 are joined, as can be seen in particular in FIG. ing.
The connecting prism 32 and the rotary lid 25 belonging to it are further provided here with a thread insertion and thread guide body 19 having a thread guide groove 20 that circulates around it and a blowout port 22 that is at least partially formed in a funnel shape. It is arranged in the notch 18.

  In the region of the blowout port 22 formed in a funnel shape, a thread guide plate 26 and a support and defibration thin pipe 30 capable of applying air pressure are provided at intervals from the outlet of the connection channel 31 of the connection prism 32. Supporting perforations 27 are also provided.

  The rotary lid 25 is connected to an electric motor drive means 35 via a thread insertion slit 37 and a connecting means 34 configured as, for example, a lever. The rotary lid 25 is controlled and operated by the electric motor drive means 35, preferably a stepping motor, and is placed in a functionally reasonable position as required.

FIG. 3 shows a cross-sectional side view of a thread connecting means 10 constructed in accordance with the present invention.
As can be seen, the connecting prism 32, including its body 23, is placed on the air distributor 17 which is itself connected to the workstation housing 33 via coupling means (not shown).
The air supply perforations 42 arranged in the air distributor 17 are connected to the compressed air perforations 36 from which the connection air perforations 38 joining the connection channels 31 of the connection prism 32 branch off.

  A thread insertion and notch portion 18 of the thread guide body 19 is disposed on a part of the connection prism 32 and the rotary lid 25 that partially surrounds the connection prism 32.

  In the so-called connection position shown in FIG. 3, the rotary lid 25 is in a position where the connection channel 31 of the connection prism 32 is still closed above.

FIG. 4 shows a cross section of the back side of the connecting prism 32 and the rotary lid 25 belonging to the connecting prism 32.
As apparent from FIGS. 3 and 4, the rotary lid 25 is rotatably supported within a limited range on the main body 23 of the connecting prism 32, but the main body 23 has an inner diameter ID of the rotary lid 25. It has a slightly smaller outer circumference AD.

The rotary lid 25 has a thread insertion slit 37, which is preferably arranged in parallel to the connection channel 31 of the connection prism 32. In this embodiment, the connection channel of the connection prism 32 is provided. In 31, it is in the position where the upper part is closed.
In short, the rotary lid 25 is rotated to the connection position by the driving means 35 acting on the coupling means 34.
As is further evident from FIG. 4, the connecting air perforations 38, also depicted in FIG. 2, that join the connecting channel 31, include compressed air perforations that are located in the body 17 of the connecting prism 32 during the connection process. The air pressure can be applied via 36.

FIG. 5 depicts a rotatable lid 25 having a modified alternative embodiment.
As can be seen, the rotary lid 25 has the connecting means 34 configured as a lever and the thread insertion slit 37 provided in the direction of the central long axis 39 of the rotary lid 25 as already described above. . An exhaust slit 40 is branched from the thread insertion slit 37 in a right angle direction.

As shown in FIG. 6, the exhaust slit 40 limits the connection air when the connection channel 31 of the connection prism 32 is largely closed by the rotary lid 25 placed at the connection position during the connection process, It plays a role of discharging upward from the connection channel 31 of the connection prism 32.
In short, by disposing the exhaust slit 40 in the lid element 25, even when the connection channel 31 is closed in the region of the rotary lid 25, the connection air can be ventilated through the connection channel 31 during the connection process. It is ensured that there is always an exhaust clearance 41 so as to assist in the formation of the stomach band.

Claims (9)

Yarn connecting means (10) for one workstation (2) of a textile machine (1) for producing cheese, comprising a connecting prism (32), the connection of the connecting prism (32) The connection channel (31), which is pneumatically applied during the stroke, can be closed by a tubularly formed lid element (25), which connects the thread insertion slit (37) and the connecting means (34). And the lid element (25) can be rotated within a limited range via the connecting means (34) and can be functionally positioned as required.
The lid element (25) functions as a rotary lid, and the inner diameter (ID) of the rotary lid is adapted to the outer diameter (AD) of the main body (23) of the connecting prism (32), A yarn connecting means characterized in that the inner diameter (ID) of the type lid is slightly larger than the outer diameter (AD) of the main body (23) of the connecting prism (32). The connecting prism (32) is mounted on the air distributor (17) in the mounted state, and the thread insertion means of the thread connecting means (10) and the corresponding notch of the thread guide body (19). The yarn connecting means (10) according to claim 1, characterized in that it is arranged within (18). The thread insertion and thread guide body (19) has a thread guide groove (20) extending in the periphery and two outlets (22) configured at least partially in a funnel shape, and the outlet (22) The yarn guide plate (26) according to claim 2, characterized in that a yarn guide plate (26) is provided in each of the regions) at a distance from the outlet of the connection channel (31) of the connection prism (32). Connecting means (10); 2. The lid element (25) is connected to an individual drive device (35) via a coupling means (34) and is electrically controllable by the drive device. Thread connecting means (10) according to 5. The individual drive device (35), in particular as a stepping motor, is connected to the workstation computer (29) of the workstation (2) via control wiring. Thread connecting means (10) according to The lid element (25) is connected to a switching link via a lever corresponding to the connecting means (34), and the switching link is rotatably supported within a range limited to the air distributor (17). The yarn connecting means (10) according to any one of claims 1 to 5, wherein the thread connecting means (10) is rotatable by an electric motor type driving means. The lid element (25) has at least one exhaust slit (40) and is blown through the exhaust slit (40) into the connection channel (31) of the connection prism (32) during the connection process. 2. The yarn connecting means (10) according to claim 1, wherein at least a part of the connecting air can be exhausted. 8. The thread connection means (10) according to claim 7, characterized in that the exhaust slit (40) is arranged at right angles to the connection channel (31) of the connection prism (32). The yarn connecting means (10) according to claim 7, characterized in that the exhaust slit (40) branches perpendicularly from the yarn insertion slit (37) of the lid element (25).

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