TR201800568A2 - Splicing Prism For A Yarn Splicing Installation Of A Work Station Of A Textile Machine Manufacturing Cross Cross Coils And Insertion Part For Splicing Prism - Google Patents

Abstract

The present invention relates to an insertion prism (23) for a thread insertion device (10) for knot-free bonding of two yarn ends at a working station (2) of a textile machine manufacturing cross-bobbins, wherein the insertion prism (23) has axes (26, 26). 27) comprises a pneumatically operable insertion channel 41 having two insertion channel receptacles (17, 18) arranged displaceably in the axial direction. According to the invention, the insertion prism (23) can be positioned or a insertion means (30) including a thread insertion slot (34) having rounded edges forming annular edges which form between the insertion channel receptacles (17, 18) in the mounting state of the insertion member (30). It is provided that the housing comprises a bearing gap (19) arranged between the insertion channel receptacles (17, 18).

Description

DESCRIPTION A TEXTILE MANUFACTURING CROSS COILS A YARN OF A WORKING STATION OF THE MACHINE INSERTION PRISM AND INSERTION FOR FITTING INSTALLATION FITTING PIECE FOR PRISM The present invention is a part of a textile machine that manufactures crossed bobbins. for knot-free tying of two yarn ends at the work station relates to a splice outlet for a splice installation, where insertion prism, its axes are located relative to each other in the axial direction having two splice duct chambers arranged in alternating fashion, includes a pneumatically actuated insertion channel.

In the textile industry, for knotless binding of two yarn ends. Yarn piecing installations have long been state of the art. they belong.

This type is especially suitable for working stations of package winding machines. Thread tying installations, known as interlocking, are the two thread ends due to its pneumatic rotation, it is immediately bent they allow the manufacture of thread-like thread connections, this thread their connections only exhibit twisted yarn-like strength. they do not remain, but rather like a twisted thread as possible. Winding process at workstations of package winding machines a thread breaks at one of the work stations during a defined error due to a yarn fault at one of the workstations. when the cleaning cut is performed, the yarn ends of the separated yarn Yarn piecing system via special pneumatic systems returned to the area. This means that a spinning nozzle the yarn end wound on the upper surface of the package takes it back and optionally returns this end to the thread error. after cleaning, the piecing prism of the yarn piecing inserts it into the splice channel.

The thread end of the upper thread, meanwhile, is also attached to the upper thread of the piecing prism. into a yarn clamping installation arranged by the a thread trimmer positioned on the underside of the piecing prism is passed into the installation. Likewise, also, the unwinding of the lower thread winding from a supply coil located in in principle a thread tensioner after an interruption in its operation the fixed thread end is also a place where low pressure can be applied. through the clamp tube into the insertion channel of the joint prism. is placed. The thread end of the lower thread, meanwhile, also into a yarn clamping system arranged on the underside and also a thread trimmer positioned above the piecing prism is passed into the installation.

Then, the thread ends are cut lengthwise by means of thread trimming installations. they are cut, bent into the holding and dissolving tubes, and there they are prepared for the subsequent addition process. This means that the thread ends of the yarn in the splicing channel in opposite directions. sideways and there it can finally be turned pneumatically. In the figure, the piecing channel of the piecing socket by means of a yarn ejector inside the retention and release tubes before being withdrawn into first avoid twisting the twisted yarn as much as possible. they are saved.

It is described in detail in numerous known applications for protection rights. In principle, though, yarn piecing systems are pneumatically operated. to an insertion prism containing an impressionable insertion channel. They have, but frequently significantly differ in their other structures. they differ.

Yarn piecing systems, for example described in DE 39 06 354 A1 the process of adding the splice channel of the splice prism, as equipped with a cover element that closes upwards during or yarn piecing installations, for example EP l 522 517 A1 Such a cover element will not be necessary, as described in They may be configured in the following way.

In such a case, such as the insertion channel of the insertion prism, thread insertion slot, which is frequently adapted to the twisted yarn inalzeine to be passed; this This means that the processing of fine spun yarn material frequently containing a relatively narrow thread insertion slot. insertion prisms are used.

However, in conventional piecing installations, the piecing socket of the yarn ends positioned in the duct, the piecing air Adding air blown into the adding channel through the nozzles There is the disadvantage of frequently being negatively affected by it. This means that the insertion channel of the insertion prism, the insertion process a cover as described in DE 39 06 354 A1 during In yarn piecing installations, which the element is closed by means of the The insertion air blown through the insertion duct axially, i.e. insertion It escapes parallel to the yarn ends arranged in its channel.

These air currents, which emerge in the direction of the insertion duct outlets, frequently tighten the yarn ends positioned in the piecing channel. effects, as a result of which the overlapping length of the yarn ends is reduced, which is especially when it falls below a minimum 'Overlap length', It has a negative effect on the durability and appearance of the joint.

To achieve such a minimum overlap length, a cover must be Joint prisms, with which the element is worked, are, in principle, relatively they contain a large length of splice duct.

For example, a cover as described in EP 1 522 517 A1 in yarn piecing installations where the use of the element is waived, however, only through the piecing air of the yarn ends insertion of the fully or partially upward addition prism there is no danger of being blown out of the duct, on the contrary, furthermore, axial displacement of yarn ends by air currents danger exists. In such cases, thread ties, formed even if they are, they become unusable as often.

In EP 1 522 517 A1, therefore, the insertion prism duct with an additional air venting system, i.e. the duct aside from an addition of orthogonally arranged and add air] Equipped with air evacuation slits that allow the evacuation recommended.

With such additional air evacuation installations, it is often the durability of the connection is improved, but this known thread splicing air vent in the middle of the splice connection similar to the location of the plumbing, or there is a danger of undesirable blistering.

In DE 36 12 229 C2, there is also a cover element disclaimer of use and the splicing prism is a two-piece splicing A yarn piecing installation comprising a conduit is also described. This This means that in the known yarn piecing installation, the piecing prism insertion channel, each unique, tangential inflow insertion with air nozzle, slightly spaced relative to each other in the radial direction to two splice channel chambers arranged in alternating is divided.

During the piecing process, the inlet air flows over the make-up air nozzles. the adding air, meanwhile, in the adding duct chambers It creates eddy currents directed in opposite directions to each other.

The insertion channel is arranged slightly offset relative to each other. This type with an insertion prism containing two insertion channel chambers yarn piecing installations, during piecing, though the yarn ends relatively safe positioning in the insertion channel. they provide a relatively easy, but relatively effortless, ignored, as it requires, and thus is very expensive contain an insurmountable disadvantage.

This means that the yarn ends are not damaged during the piecing process. splice arising between the splice channel chambers to prevent Careful treatment of duct chambers joint edges necessary, that is, smoothing these edges with effort and difficulty required, which is their position in the insertion channel. it has not been easy.

Starting from yarn piecing installations of the above-mentioned type, The underlying task of the invention is that it can be manufactured cheaply, and a cover even if the use of the element is waived, always safely, neatly in the thread channel of the socket. providing a yarn piecing system that allows the is to be done.

In this task, the insertion channel in the assembly state of the insert forming the joint edges that emerge between the chambers a thread insertion slot with rounded edges where an insert can be positioned or between the insertion channel chambers, where it is positioned thanks to an insertion prism with a regulated bearing gap is fulfilled. In addition, the task is a It is also fulfilled by the insert piece.

Advantageous embodiments of the invention are the subject of the subclaims.

As already mentioned above, the insertion socket must be in the radial direction. two affixes arranged as offset relative to each other a pneumatically actuated insert that is divided into the chamber The advantage of yarn piecing installations, which are equipped with a narrowing in the area of contact of the two splice channel chambers. emergence, thanks to this narrowing, during the insertion process, for a certain resistance against the axial movement of the yarn ends to be tied. is to be displayed. Contact point of both splice duct chambers How much is the radius of curvature of the additional edges arranged in the region the smaller it is, the stronger this effect will be. This means that small but to obtain blunt joint edges, the splice for the additional edges of the splice channel chambers of the socket, the yarn piecing clean as possible before installation in It is advantageous to be polished.

However, access to the joint edges of the splice channel chambers is relatively difficult. polishing the additional edges of the insertion channel chambers It takes a lot of effort and is costly.

In the practice of the present invention, the addition of the splice channel chambers with the problem of relatively difficult polishing of the edges, in the assembly state of the part, it emerges between the insertion channel chambers. with rounded edges forming the exit joint edges, a thread insertion slot connecting the splice channel chambers insertion channel, in which an insert can be positioned an insert containing a bearing space arranged between the chambers It can be pressed thanks to the use of the socket. of the passing piece in the case of assembly, so that they are offset relative to each other yarn that can be placed in arranged piecing channel chambers a splice channel over the rounded joint edges for a yarn movement from the hopper into the other splice duct hopper. possible. The thread insertion slot is preferably where the thread in accordance with the insertion channel chambers in the direction of insertion. a created depth and also preferably the direction of yarn travel. yarn from the respective piecing channel chambers, formed transversely as far as possible an inconsistent passage into the insertion slot. It contains a width that makes it possible. In other words: the insert in the case of assembly, the base of the thread insertion slot and the thread the side walls of the insertion slot, adjoining the base, of the corresponding insertion channel chamber, aligned in the direction of they adjoin its respective base and corresponding sidewall.

This means that an addition prism, as described above preferably through the use of a structured form of implementation, only, during the insertion process, the flow of the insertion air insertion channel of the insertion prism, through its components axial displacement of yarn ends arranged in the danger is not significantly reduced, but also the splice socket, very It also brings a great advantage, such as being cheap to manufacture.

In an advantageous application, it can be inserted into the insertion channel of the bearing gap. It is envisaged to be arranged orthogonally. the bed range thanks to its arrangement in this way, within the bearing range configuring and processing the adjusted insert significant advantages are obtained in terms of This means that the bed preferably plate The insert structured in style can only be fitted with a smooth, right-angled joint. includes the edges, all of these corners are freely accessible and so it can be processed relatively smoothly.

It can be changed easily within the bed range. adjustable or regulated insert, advantage relatively easy to construct in case of assembly, allowing by means of a locking device that can be removed without damage is secured. The insert, for example, the insertion prism equipped with a hole that is connected with a corresponding hole it could be. In the mounting state of the insert, a hole is inserted into the holes. fixing tool is installed. As a means of fixation here for example using a Screw Bolt, a clamping pin, or similar component can find.

In terms of the correct configuration or manufacture of the insert, various possibilities can be considered.

The insert, according to a preferred embodiment, is punched part of it, and in such a case preferably a consists of metallic material, for example a tool steel. However, a in the alternative preferred embodiment, furthermore, the insert It can also be considered that it is made of technical ceramics.

A metallic as a punching part of an insert made of material, here, in particular, a sufficient number of such punching parts, when the part has to be manufactured The advantage is that the production is always cheaper as the number of parts increases. has. This means that a suitable zimbalaina tool manufacture of such metallic punching parts A large part of their expenses are limited to the cost of the tool.

Also, this type is an insert intended as a stapling piece. subsequent rounding of the joint edges of the part, polishing tools This can be done relatively easily and without problems. This This means that the staple piece made of a metallic material, when the number of parts is appropriate, it can be manufactured relatively inexpensively.

When the insert is manufactured from a technical ceramic, the sintering for the mass of the receiving mold, the component to be manufactured is already after combustion. Configuring it to include additional rounded edges it is advantageous.

Fittings made of a technical ceramic though fabrication in terms of tachine steel, comparable punching pieces they are more expensive, but the advantage of these inserts is that such the service life of the components depends on their wear resistance. because it is very long.

Another is the splice channel, according to the preferred embodiment. insertion channel of each of the chambers, each of which is tilted from above contain a adding air nozzle that melts into the chamber is foreseen.

The addition of the air nozzle is preferably tangential and from above. a thread insertion slot that leads into the piecing directly into the insertion channel near it. It means, while adding air is blowing into the adding channel chamber, an eddy current along the walls of the insertion channel chamber creates, this current, the fibers of the yarn ends to be tied are intertwined. leads to tangling and bending.

of the addition duct chambers and also the addition air nozzle. Thanks to a suitable geometry of its position, the insertion air immediately after blowing, it first touches the yarn ends and It can be ensured that the yarn ends are mixed. Then the ends of the yarn, turning is rotated through the current, and at that time it is properly combined In addition, according to a preferred embodiment, each addition air of the yarn piecing system via an air distribution system. can be connected to an air duct, through this air duct, that compressed air can affect the outlet in case of need. is foreseen.

Thanks to an air distribution system that can be connected to an air duct, every adding air arranged in two addition duct chambers nozzles for connecting to a common compressed air source an opportunity is readily available. This means that the addition prism of the insertion channel axially into the two insertion channel chambers separation and also the radial location of these chambers relative to each other. Although it changes, thanks to the air distribution system, adding provides reliable clamping of the air nozzles, and thus, in the insertion channel chambers in opposite directions to each other. The creation of eddy currents is secured.

According to another aspect of the invention, the above-mentioned task is in a working station of a textile machine producing bobbins. A yarn piecing system for knot-free tying of the yarn end by a method for the manufacture of an annexed prism for is brought. For this, first, the preferred an addition prism according to one of the application forms and above a plug according to one of the preferred embodiments described parts are provided. Then, the insert is in the bearing gap, piecing chute hoppers for inserting a yarn on the slit are arranged so that they are connected to each other, this the rounded edges of the thread insertion slot form the joint edges that emerge between the duct chambers. This Thus, a yarn piecing installation with the above-described advantages obtainable.

The invention is an example of an embodiment shown in the drawings below. explained more closely.

Figure 1 is a model with an insertion prism according to an application example. of a package automaton with yarn piecing system schematically display the working station in side view, Figure 2 is two inserts arranged offset from each other. duct hopper and also both splice duct hoppers a bearing space for an insert, arranged between an application instance with an insertion channel containing according to a system arranged on an air distributor body. add the prism in perspective view, Figure 3 A top view of the addition prism according to Figure 2°, partly cross-sectional, Figure 4 According to the section III-III of Figure 3°, one of the prisms of insertion front view, Figure 5, insertion channel chambers according to an application example perspective front seemingly shows.

In Figure 1, a textile machine producing cross-wound bobbins, In the application example, a working of a winder automatic (1) station (2) shown schematically in side view.

Such bobbin automats (l), several such, in rows, side by side structured, often in the same style, workstation (2) On these workstations (2), installed coils, for example manufactured on ring spinning machines, relatively few The spinning cops (9) containing twisted yarn material are unwound and large they are rewound into bulky packages (15), which After being prepared, a package transport of machine length they are transferred onto the assembly 21, and by this, the machine end They are transported to a coil load station arranged by

In the application example, the package autoinjection (1), also a spinning a machine-specific device in the form of the cop and empty sleeve transport system (3). It also includes the logistics installation, of which, in Figure 1, only cop feed path (4), drive with reverse movement The storage path (5), which can be cross transport path (6), and also hive return path (7) shown.

During the winding operation, this spinning bobbin and empty sleeve transport system (3) positioned perpendicular to the carrying bowls (8) in As a result, the spinning bobbins (9) or the empty sleeves move.

The first batch of storage delivered via the bobbin feed route (4) spinning bobbins (9) temporarily supported on the Meanwhile, in the area of the cross transport routes (6), the work stations (2) They are located in a dissolution position (AS) at the height of the they are then unwound and rewound into large volume packages (15), meanwhile, the moving yarn is also during the winding process. also checked for yarn errors, these errors can be optionally they can be cleaned immediately.

Independent workstations (2), for this purpose, as known and Therefore, as will be shown only schematically, this study to the various installations that ensure the proper operation of the stations (2). they have.

Each of such work stations (2), for example, thread tensioner, yarn clearer with its own yarn cutting system, waxing system, yarn pulling force sensor and also lower yarn Equipped with thread processing or thread manual intervention installations such as has been made.

Each of the work stations (2) of such package automatons (1) one also has a suction nozzle (12), a clamp tube (25), and it also has a thread piecing system (10). In addition, this type of cross coil automats (l) are in principle often used, for example, on a machine bus Work station of independent workstations (2) via (16) There is also a central control unit (11) connected to their computers (29). As can be seen from Figure 1, each of the work stations (2), For winding of the packages (15), there is also a rotation axis (22) supported to move around, and (15) equipped with a means to keep the sleeve rotatable containing, among others, a wrapping frame (28) that has been each has a winding device (24).

During the winding process, freely inside the winding frame (28). the rotatably supported cross coil (15), with its upper surface, for example, a thread guide roller (14) rests on it and are dragged along by the roller in a frictional harmony.

Such yarn guide rollers (14), as is known, are Because they have a guide groove, the moving thread, the winding In addition, during the process of winding winding in the form of intersecting layers of winding it is guided to be wrapped around it.

However, instead of a yarn guide roller, you can also during the winding process, it rotates only in accordance with friction. A hollow bobbin drive roller can also be used.

In such a case, the yarn wound on the cross bobbin (15) for example, a thread equipped with a finger thread guide crossed by means of the crossover installation.

Thread wound onto the upper surface of the cross bobbin (15) of an upper thread (31) removal of the end after a winding cut and piecing a rotation axis (13) when it needs to be transferred to the Suction nozzle with limited rotation support (12) is used.

The yarn end of a lower yarn (32) connected to the spinning bobbin (9) is limited extent around the axis of rotation (20) the rotatable clamp is treated in a similar way to the tube (25). This This means that the clamp tube (25) is the lower fixed in the thread tensioner. It takes the thread end of the thread (32) and attaches it in the same way. transfers it to the installation (10).

The thread piecing device 10 is preferably of the workstation via an intake system (not shown) (2) is attached to its housing (33) and, at this time, as usual here regular, i.e. habitual yarn movement during the winding process It has been arranged as slightly shifted back in terms of

As is known, in the region of the yarn piecing installation (10), there is also (closely (not shown) holding and dissolving tubes are arranged, With these, yarn ends are prepared for piecing.

In addition, in the area of the piecing installation (10), the addition is better in drawings. Yarn that is not shown in the same way for clarity, manual intervention installations, for example thread clamping installations, thread trimming installations and a yarn maker is arranged.

Thread piecing device (10), operating without a cover element, is shown below With compressed air, as explained closely with the aid of Figures 2 - 5 an air diffuser body comprising an insertion channel (41) which can be affected (36) has an insertion socket (23) arranged on it.

Thread ends of an upper thread (31) and a lower thread (32) Adding a splice socket (23) to which it may be connected pneumatically As shown in Figures 2 and 3°, their axes (26, 27) are connected to each other. two insertion channels arranged slightly displaced relative to chamber (17, 18).

The splice socket (23) also includes a thread insertion slot (34) for insertion of an insert (30), insertion channel chambers A bearing arranged orthogonally to its axes (26, 27) (17, 18) range (19). In particular, in the case of assembly, a threading device 10 Figure showing a perspective view of the splice prism 23 Cross-sectional view of 2” or a top view of the insertion prism (23). from Figure 3, where it is shown as arranged via a locking device (35), for example of the secured insert (30), the additional edges of which are covered. well arranged between the insertion channel chambers (17, 18). visible.

This means that in the assembly state, the insert (30) Inside (19), the thread insertion slot (34) of the insert (30) the insertion channel will be arranged between the chambers (17, 18) and a narrow space for piecing air flows during piecing and there is also a thread for the thread ends to be attached to the upper and lower threads (31, 32). it is positioned to form a locking place and is underlined.

Figure 4 shows an attachment fixed on an air diffuser body (36). shows a section through the outlet (23).

As can be seen, each of the insertion channel chambers (17 or 18) one insertion air nozzle (37) inwards, obliquely from above The addition air nozzles 37, meanwhile, are themselves an air dispersal It is connected to an air duct (39) over the system (38), this air through the insertion channel (41) of the insertion prism (23) If necessary, compressed air (D) can be applied.

Figure 5, for example configured as a metallic punching part an insert that is made of a technical ceramic or (30) shows in perspective view.

As can be seen, the insert (30) includes a thread insertion slot (34) and further comprising a portion of a locking device (35).

In the example of the present application, the locking device (35) a locking screw that engages the hole through the mounting state created via.

Insert (30) as metallic Stapling piece when configured, the additional edges of the thread insertion slot (34) It is processed after zipping, which means that detonation the sharpness of the edges is reduced, this operation is relatively simple and it is problem free.

In an insert (30) made of technical ceramic, die, immediately, sintering process, which takes the sintering mass of the component sharp edges may appear in the insert (30) during is structured to avoid.

Claims (10)

REQUESTS 1. A piecing prism (23) for a yarn piecing installation (10) for knot-free fastening of two yarn ends at a work station (2) of a textile machine producing cross-wound bobbins, wherein the piecing prism (23) has axes (26, 27) axial A pneumatically actuable insertion channel (41) with two insertion channel chambers (17, 18) arranged displaced relative to each other in one direction is characterized by the insertion channel chambers (17) in the insertion prism (23) in the assembly state of the insert (30). , 18) and a bearing gap (19) arranged between the splice channel chambers (17, 18), in which an insert (30) can be positioned or is positioned, including a yarn insertion slot (34) with rounded edges forming the splice edges emerging between them. 2. Insertion prism (23) according to claim 1, characterized in that the bearing gap (19) is arranged orthogonally to the insertion channel (41). 3. An insertion prism (23) according to claim 1, characterized in that the easily replaceable insert (30), which can be arranged or arranged in the bearing gap (19), is a locking device (35) in which, in case of assembly, it can be removed without being damaged. through security. 4. It is an insertion socket (23) suitable for request 1, and its characterizing feature is that each of the insertion channel chambers (17, 18) has an insertion air nozzle (each of which reaches into the insertion channel chamber (17 or 18) from above, obliquely from above. 37) is included. 5. It is the piecing socket (23) according to the request 4°, characterized in that each piecing air nozzle (37) is connected to an air duct (39) of the yarn piecing system (10) via an air distribution system (38). It can be connected to the connection socket (23) via this air duct, in case of need, compressed air can act. A plug-in piece (30) for an insertion socket (23) according to any one of the preceding claims, characterized in that the insert (30) is configured to be positioned within the bearing gap (19) arranged between the insertion channel chambers (17, 18). wherein the insert (30) comprises a thread insertion slot (34) with rounded edges which, in the assembly state of the insert (30), form the joint edges that emerge between the insertion channel chambers (17, 18). 7. It is an insert (30) according to claim 6, characterized in that the insert (30) is manufactured as a punching part and consists of a metallic material. 8. Insert (30) according to claim 7, characterized in that at least the edges of the thread insertion slot (34) of the insert (30) are rounded by polishing. 9. Insert (30) according to claim 6, characterized in that the insert (30) is manufactured from a technical ceramic. 10. Method for the manufacture of a piecing prism (23) for a yarn piecing installation (10) for knot-free tying of two yarn ends at a work station (2) of a textile machine producing cross-wound bobbins, its characterizing feature being from 1° to 5” Providing an insertion prism (23) according to one of the claims up to 3° and an insert (30) according to one of the claims 6° to 9°, and the insertion part (30) in the bearing gap (19) the insertion channel chambers ( 17, 18) are arranged to be connected to each other over the thread insertion slot (34) for insertion of a thread, where the rounded edges of the thread insertion slot (34) form the additional edges that emerge between the insertion channel chambers (17, 18).