EP2103561A2 - Core with a RFID transponder for a textile machine - Google Patents

Abstract

The element (11) has a circular, cylinder shaped or conical body provided for partial or complete insertion into a hollow space of a spinning core (1) under formation of form-and/or frictional contact, where the element is made of rubber elastic material. A section of the supporting element supporting a transponder (12) lies in an inner side of the spinning core. The transponder is casted in the supporting element and is molded by carrier material via injection casting method. Lateral protruding lamellas are provided at an inner wall of the core.

Description

The invention relates to a carrier element with a transponder for attachment to a sleeve and a sleeve with a mounted on this, carrying a transponder support member.

Methods for the identification of products or intermediate products in industrial processes of the textile industry, such as yarn packages, as well as product-accompanying data transport in the textile industry have been known for some time. So describes z. B. the CH-A-686 156 a method for the identification of material units manufactured in industrial processes and a material-accompanying data transport. For this purpose, a material unit is given an at least electronically readable, usually a both electronically writable and readable data storage on the way. Product-specific data such as quality and production data or just an identification code are stored on the data memory. This allows the taking of product-typical data from one process level to the next.

The aim of such a method is the traceability of the production route, which has covered a final product, for example a yarn wound on a cross-wound bobbin. On the one hand, from this information it can be ascertained from which production location (eg flyer, spinning or winding station) a material unit originates. On the other hand, based on the known production and quality data, decisions can be made about the further processing of the material unit.

While in the early days of such systems the read and write operation was still via contacts, today's systems use wireless communication of data both for reading the media and for writing to the media.

The data transmission takes place via electromagnetic waves, which are usually of the microwave over short to long wave range. The data carrier in this case has an integrated circuit for receiving and transmitting data as well as a permanent data memory and an antenna. The shorter-wave frequency range is, in which is worked, the smaller the antenna of the transponder can be designed.

Such systems are today known under the English name "RFID" (Radio Frequency Identification), which means "identification by means of high frequency". In addition to the non-contact identification of objects, RFID also stands for the automatic collection and storage of data on these objects. The data carrier is called a transponder.

In principle, the RFID communication functions as follows: The reading and / or writing device generates a high-frequency electromagnetic alternating field, which detects the antenna of the RFID transponder. As soon as it enters the electromagnetic field, an induction current is produced in the antenna coil. This current is used for the power supply during the reading or writing process (passive RFID transponder). Theoretically, however, the transponder can also contain a battery for power supply (active RFID transponder). The data is now transmitted modulated in the electromagnetic alternating field. As a rule, the transponder does not transmit its own electromagnetic field.

In spinning mills with flyers, spinning machines and winding machines, it is known to mount such transponders on sleeves for roving or yarn. The transponders contain important information about the material wound on them. So describes z. B. the DE-U-203 11 960 a Flyer sleeve, which is equipped with a transponder, wherein the transponder is arranged above or below the flyer winding. According to a special embodiment, the transponder is designed as an open ring, which can be clipped onto the flyer sleeve. However, this requires that the flyer sleeve z. B. is equipped with a receiving groove to receive such a ring. Retrofitting existing flyer sleeves is not possible here.

Basically, it should be remembered that the textile equipment and many processes on the textile machinery, such. As the Doffvorgang are matched to the geometry of the yarn tube. Changes in the outer circumference or in the length of such yarn tubes when attaching transponders can have negative effects on the process sequences. It is therefore important to ensure that the sleeve outer geometry in modifications to the sleeve, such. B. is not changed when attaching a transponder as possible. Furthermore, it should also be noted that when attaching transponders to the sleeve no imbalances are introduced by unequal mass distributions in the sleeve, which have a negative effect in the spinning or winding process.

The EP-A-0 398 301 describes a yarn tube, on the upper end of a press-fit connection an essay with transponder is placed. This article leads to a considerable extension of the retrofitted yarn sleeve and can therefore be used for reasons mentioned above only in connection with the production of new sleeves.

Object of the present invention is to provide a support member with a transponder, which can be easily and quickly attached to existing yarn tubes and also removed from them again, without the outer geometry of the sleeve must be significantly changed or expensive assembly procedures are necessary.

The object is achieved in that the carrier element is a pass-shaped, in particular annular, cylindrical or conical body for partial or complete insertion into the cavity of the sleeve to form a positive and / or frictional engagement, wherein the transponder-carrying portion of the support element in the interior the sleeve is located.

Under sleeve in this application is to be understood a sleeve which is adapted to receive a winding of roving, yarn, or a twine. Accordingly, the yarn tubes can be used for winding on roving machines, such as flyers (flyer sleeves), or on spinning machines (spinning tubes), twisting machines or on winding machines. The wound sleeves can thus be flyers (roving bobbins), spinning cops or cheeses. Also, cores for winding a winding good, z. As a web or belt-shaped goods, in general should fall under the term sleeves. However, the sleeve is preferably a spinning sleeve. The sleeve may be cylindrical or conical or slightly conical.

The transponder is expediently an RFID transponder, wherein other transponders, which work in other frequency ranges, should be included in the scope of protection. The transponder preferably comprises an integrated circuit, a permanent memory and an antenna. The transponder can be a passive or active transponder.

The carrier element according to a first preferred embodiment (A) of a dimensionally stable, but elastically deformable plastic, which deformed under tensile and compressive load, but then returns to its original, undeformed shape. That the carrier element is made of a rubber-elastic material. The carrier element is in particular made of an elastomer, in particular of natural rubber or synthetic rubber. The support element may, for. B. of a silicone elastomer or a thermoplastic elastomer.

The carrier element according to a second embodiment (B) is formed as a dimensionally stable, rigid or rigid component. The carrier element according to embodiment (B) is preferably made of a plastic, for. As a polyolefin, polyamide or polyester. However, the support element may well have resilient wall sections or formations (eg for a snap connection). If the carrier element is designed annularly with an annular gap, then although the annular limbs are resilient, the component as a whole, however, is nevertheless rigid or rigid.

The transponder according to embodiment (A) or (B) may be cast into the carrier element or adhesively bonded thereto. When using an injection molding process, the transponder can also be encapsulated as an insert from the carrier material. Furthermore, the transponder can also be inserted into a pocket or recess on the carrier element. If the carrier element consists of a rubber-elastic material (embodiment A), the transponder in the pocket is preferably held in place by elastic forces. That is, by inserting the transponder into the pocket or the recess takes place an elastic stretching of the pocket or recess forming walls whose restoring forces clamp the transponder in the pocket or recess. If the carrier element is not rubber-elastic, then the transponder is preferably inserted positively and / or frictionally into the pocket. A additional adhesive bond can improve the grip in both cases. In principle, the transponder can also be cast into the pocket or recess by means of an adhesive or a reaction resin.

The carrier element is preferably designed rotationally symmetrical in its outer contour.

The carrier element according to the two embodiments (A) and (B) is preferably a ring-like or annular component with a central cavity. The central cavity may be closed or unilaterally or bilaterally in the axial direction, i. both sides, be open. Axial direction here means in the direction of the ring axis.

The component according to embodiment (A), but also according to embodiment (B), may also be in the form of a cylindrical or conical body, for. As grafting, be designed with or without (closed or one or two-sided open) cavity, which is pushed into the sleeve interior and enters into a form-fitting and / or frictional connection with the sleeve inner wall. Furthermore, the carrier element according to the two embodiments (A) and (B) also any other, z. B. polygonal cross-sectional shape, provided that the support member is insertable to form a form and / or frictional engagement in the sleeve interior.

If the carrier element is made of a rubber-elastic material (embodiment A), then this is elastically deformable in the radial direction. This is especially true for annular support elements. The carrier element according to embodiment (A) may further include laterally projecting lips or lamellae which are elastically engageable with the inner wall of the sleeve. Such lips or lamellae give the support element additional support inside the sleeve. Moreover, the lips or lamellae can be arranged obliquely backwards on the carrier element in the insertion direction. In this way, the support of the carrier element against the insertion direction is further improved.

The carrier element according to the embodiments (A) and (B) can be provided with a radial excess over the inner diameter of the sleeve at the intended attachment point, so that the carrier element at its intended Square in the sleeve interior forms a frictional connection. However, this excess is preferably relatively small. Furthermore, the carrier elements of both embodiments can on its outer circumference a roughness pattern or projections, z. As ribs, knobs, elevations / depressions, which improve the frictional anchoring of the support elements in the sleeve interior.

The carrier element according to a particularly preferred embodiment of the embodiment (B) is an annular body with an annular gap and resilient properties, which is designed such that the carrier element by radially compressing the annular gap in the cavity of the sleeve insertable and by radial relief of the annular body due to the restoring force the annular leg can be applied to the inner wall of the cavity in a form-fitting manner. By radial compression of the support element, this is at least partially and preferably completely inserted into the corresponding cavity of the sleeve, and is seated by radial relief of the annular body under springback of the annular leg form or frictionally firmly in the cavity.

In a further development of the invention according to the embodiments (A) or (B), the support element has an annular circumferential recess or groove for receiving the annular wall end portion delimiting the upper sleeve opening. In this way, the carrier element is additionally secured in the axial direction. The support member is preferably such that in this embodiment only one annular bead projects beyond the upper sleeve end, i. this overreaches or engages behind, so that there is no significant elevation of the sleeve. If the support element is the embodiment (B), then the groove-bead arrangement can be designed as a snap connection, in which the bead is pushed over the end edge of the sleeve wall owing to elastic properties of the support element.

Another object of the protection claim is a sleeve on which a carrier element with transponder of the type described above is arranged. The carrier element is preferably arranged partially or completely in the cylindrical or slightly conical cavity of the sleeve. The support element according to embodiment (A) or (B) engages with the sleeve a positive and / or frictional engagement or interference fit connection.

The carrier element according to the two embodiments (A) and (B) is inserted into the cavity of the sleeve. It should be mentioned at this point that a carrier element according to embodiment (A) can also be pushed over the outer wall of the sleeve.

If the carrier element according to embodiment (B) is an annular body with an annular gap and resilient properties, then this is introduced by radially compressing the annular gap in the sleeve and created by radial relief due to the restoring force of the annular leg form-fitting manner on the inner wall of the cavity.

Known sleeves for yarns to be retrofitted have a cylindrical or slightly conical cavity surrounded annularly by the sleeve wall, which at the upper end merges into an upper opening delimited by the sleeve wall, wherein the sleeve wall forms an annular constriction by an inward inclination. The carrier element can now have an annular indentation, into which engages the, the upper opening enclosing, annular sleeve wall to form a positive connection in the recess or groove on the support element.

The support elements according to both embodiments (A) and (B) are preferably pushed from the lower sleeve opening in the cavity and preferably up to a stop at the upper opening or beyond for the purpose of assembly (see embodiment according to Fig. 2a, 2b ). However, the said carrier elements can, if the geometry of the sleeve or the geometry of the carrier element and its material properties allow it, be pushed from the upper sleeve opening in the sleeve. The carrier element may, but must, like Fig. 2a, 2b shows, not completely inserted into the sleeve, but this, albeit only slightly, tower over. However, the transponder carrying portion of the support element according to the embodiments (A) and (B) is suitably completely in the cavity of the sleeve.

The annular indentation or groove of the carrier element attached to the sleeve according to embodiment (A) preferably includes an annular bead or a terminating lip which engages behind the annular end wall of the sleeve surrounding the upper sleeve opening.

The attached to the sleeve carrier element made of a rubber-elastic material according to embodiment (A) is preferably a positive connection and / or frictional connection with the sleeve.

The carrier element attached to the sleeve can also be an annular body with an annular gap and resilient properties according to embodiment (B). The carrier element is inserted here by radial compression of the annular gap in the sleeve and applied by radial relief of the annular body due to the restoring force of the annular leg form-fitting manner on the inner wall of the cavity.

The solution according to the invention are particularly suitable for RFID systems which operate in the shortwave range or even in shorter wavelength ranges. The present invention enables simple, fast and cost-effective retrofitting of sleeves with transponders. Since the combination of transponder and sleeve does not have to be integrated in the production process of the sleeves, as is the case, for example, cast in the sleeves transponders, can be dispensed with in the future cumbersome adjustments in the sleeve production in the context of the introduction of RFID in spinning mills , This can save costs.

Fig. 1:

eine herkömmliche Spinnhülse für Ringspinnmaschinen;

Fig. 2a:

eine erfindungsgemäss mit einem Trägerelement und Transponder ausgerüstete Spinnhülse gemäss einer ersten Ausführungsform;

Fig. 2b:

eine erfindungsgemäss mit einem Trägerelement und Transponder ausgerüstete Spinnhülse gemäss einer modifizierten ersten Ausführungsform;

Fig. 3:

eine erfindungsgemäss mit einem Trägerelement und Transponder ausgerüstete Spinnhülse gemäss einer zweiten Ausführungsform;

Fig. 4:

ein Trägerelement mit Transponder gemäss einer dritten Ausführungsform;

Fig. 5:

ein Trägerelement mit Transponder gemäss einer vierten Ausführungsform;

Fig. 6:

ein Trägerelement mit Transponder gemäss einer fünften Ausführungsform.

The invention will be described below with reference to FIGS. 1 to 6 explained in more detail. Show it:

Fig. 1:

a conventional spinning sleeve for ring spinning machines;

Fig. 2a:

a spinning sleeve according to the invention equipped with a carrier element and transponder according to a first embodiment;

Fig. 2b:

a spinning sleeve according to the invention equipped with a carrier element and transponder according to a modified first embodiment;

3:

a spinning sleeve according to the invention equipped with a carrier element and transponder according to a second embodiment;

4:

a carrier element with transponder according to a third embodiment;

Fig. 5:

a carrier element with transponder according to a fourth embodiment;

Fig. 6:

a carrier element with transponder according to a fifth embodiment.

The Fig. 1 shows a conventional spinning tube 1 as used for ring spinning machines. The sleeve is a cylindrical or slightly conical hollow body with a sleeve wall 2 and a two-sided open cavity 3 with a lower opening 6 and an upper opening 4. The upper opening 4 toward the spinning sleeve 1 has a constriction 5 by the sleeve wall 2 to the upper Opening 4 is inclined inwards towards. That is, the diameter of the opening is smaller than the diameter of the cavity in the upper end portion 16. The narrowing can also be achieved by a thickening of the sleeve wall 2. The sleeve 1 is designed rotationally symmetrical about a sleeve axis 7.

In Fig. 2a the same type of spinning sleeve 1 is equipped with a carrier element 11 according to the invention, which carries a transponder 12 which is embedded in the carrier element 11. The support member 11 is formed as an annular, rubber-elastic body with a central, two-sided open cavity 15. The support member 11 includes a, the support member 11 annular circumferential groove 13 and an adjoining the groove 13 upper Abschlusswulst 14, which also forms the upper end of the support member 11. The carrier element 11 is now introduced into the spinning sleeve 1 in such a way that the inwardly inclined sleeve wall forming the constriction 5 engages in the annular groove 13. The support member 11 is doing with the Abschlusswulst 14 the upper end of the sleeve in the axial direction 7 slightly before and engages behind the inwardly inclined sleeve wall 2. In this way creates a permanent axial anchoring of the support member 11 in the spinning sleeve 1. The support member 11 also nestles shape or frictionally engaged with the inner wall of the spinning sleeve 1. The carrier element 11 is thus not fully inserted into the spinning sleeve 1 here, but projects slightly beyond it with the final bead 14.

In Fig. 2b The same type of spinning sleeve 1 is also equipped with a carrier element 61 according to the invention, which carries a transponder 62 which is embedded in the carrier element 61. The support member 61 is formed as an annular, rubber-elastic body with a central, two-sided open cavity 65.

The support member 61 includes a, the support member 61 annular circumferential groove 63 and a, a wall of the groove 63 forming annular end lip 64, which at the same time forms the upper end of the support member 61. The carrier element 61 is now introduced into the spinning sleeve 1 in such a way that the inwardly inclined sleeve wall forming the constriction 5 engages in the annular groove 63. The support member 61 projects with the end lip 64 the upper end of the sleeve in the axial direction 7 and engages behind the inwardly inclined sleeve wall 2. The final lip 64 lies here on the, formed by the inwardly inclined sleeve wall conical end portion of the spinning sleeve 1. In this way arises a permanent axial anchoring of the support member 61 in the spinning sleeve 1. The support member 61 also conforms shape or frictionally against the inner wall of the spinning sleeve 1 at. The carrier element 61 is thus not fully inserted into the spinning sleeve 1 here, but still slightly surmounted by its end lip 64.

The carrier element 21 according to Fig. 3 is formed as an annular, rubber-elastic body with a central two-sided open cavity 25. The transponder 22 is embedded in the carrier element 21. The support member 21 is pushed up to a stop on the upper end of the sleeve, wherein the stop is formed by the constriction 5 of the upper sleeve opening 4. The carrier element 21 fits snugly against the sleeve inner wall. The reading and / or writing device 27 for reading or writing to the transponder by means of electromagnetic waves 26 is suitably arranged overhead in such an arrangement, so that the smallest possible distance between transponder 22 and read / write device 27 is located. In principle, and this applies not only to the embodiments shown in the figures, the carrier element can be arranged with the transponder at any point in the cavity 3 of the sleeve 1. However, it has been found that an overhead arrangement of the reader / writer and, accordingly, the placement of the transponder in the upper sleeve end portion 16 provides the best results. This is because, on the one hand, the transponder lies in a unwound sleeve section, so that no yarn layers attenuate the signals or force a greater distance to the read / write device. On the other hand, the sleeves are horizontally displaced as they pass the reader / writer, so that an overhead assembly of the Reader / Writer does not restrict the freedom of movement of the sleeves in the horizontal dimension. The lower end portion of the spinning sleeve, in turn, is often placed on a carrier during tube transport and therefore difficult to access for a reader / writer.

The Fig. 4 shows a modified embodiment of a carrier element 21 according to Fig. 3 , The annular, rubber-elastic support member 31 with central, two-sided open cavity 35 and the embedded transponder 32 has on its outer periphery lips or fins 33, which lead opposite to the insertion direction 36 in the sleeve cavity 3 obliquely away from the body. The lips or slats 33 nestle in the mounted state of the support element 31 under elastic deformation of the sleeve inner wall and anchor the support member 31 additionally in the sleeve cavity 3. Such a support member 31 is preferably pushed from the lower end of the sleeve into the sleeve cavity 3.

The Fig. 5 shows a further modified embodiment of a carrier element 21 according to Fig. 3 , The annular, rubber-elastic support member 51 with central, two-sided open cavity 55 has on the inner circumference of a pocket 53, in which the transponder 52 is embedded. The transponder 52 is held by the restoring forces of the expanded during insertion of the transponder 52 pocket wall.

Fig. 6 shows a further embodiment of an annular support member 41 with central, two-sided open cavity 45, in which a transponder 42 is embedded. The carrier element 41 has an annular gap 43, which is bounded by two ring legs 44a, 44b. Although the ring legs 44a, 44b are resilient, the carrier element is rigid and in particular not rubber-elastic in itself. By radial compression of the support member 41, this is inserted into the cavity 3 of the spinning sleeve 1. By radial relief of the ring legs 44a, 44b, the support member 41 sets under spring back due to the restoring force of the ring legs 44a, 44b form fit or frictionally engaged in the sleeve cavity 3.

Claims (15)

Carrier element (11, 41) with a transponder (12, 42) for attachment to a sleeve (1),
characterized in that
the carrier element (11, 41) is a pass-shaped, in particular annular, cylindrical or conical body for partial or complete insertion into the cavity of the sleeve (1) to form a positive and / or frictional connection, wherein the transponder (12, 42) supporting portion of the support element (11, 41) lies inside the sleeve. Carrier element according to claim 1, wherein the transponder (12, 42) is cast into the carrier element (11, 41) or injection-molded by injection molding of the carrier material. Carrier element according to one of claims 1 and 2, wherein the carrier element has a pocket or recess, in which the transponder (12, 42) is inserted. Carrier element according to one of claims 1 to 3, wherein the carrier element has a central cavity (15) and the central cavity (15) is closed or open on one side or both sides in the axial direction. Carrier element according to one of claims 1 to 4, wherein the carrier element (11) has an annular circumferential recess or groove (13) for receiving the upper sleeve opening (4) limiting annular Wandendabschnittes (5). Carrier element according to claim 5, wherein an annular bead (14) or end lip (64) is provided following the annular indentation or groove (13), which (r) is designed such that this (r) the annular, the upper sleeve opening (4) surrounding the end wall (5) of the sleeve (1) engages behind. Carrier element (41) according to one of claims 1 to 6, wherein the carrier element (11) is made of a rubber-elastic material. Carrier element according to claim 7, wherein the carrier element (11) is a radially rubber-elastically deformable, ring-like component with a surrounded by an annular shell part central cavity (15). Carrier element according to claim 7, wherein the carrier element (11) is a radially rubber-elastically deformable, cylindrical or conical component with or without a cavity (15). Carrier element according to one of claims 7 to 9, wherein the carrier element (31) laterally projecting lips or lamellae (33) which can be applied to the inner wall of the sleeve (1). Carrier element according to claim 10, wherein the lips or lamellae (33) in the insertion direction (36) are arranged obliquely pointing backwards on the carrier element (31). Carrier element according to one of claims 1 to 6, wherein the carrier element (41) is an annular body with an annular gap (43) and resilient properties, which is designed such that the carrier element (41) by radially compressing the annular gap (43) in the cavity (3) of the sleeve (1) insertable and by radial relief of the annular body (41) due to the restoring force of the annular legs (44a, 44b) form-fitting manner on the inner wall of the cavity (3) can be applied. Sleeve with a carrier element (11), attached to the sleeve (1) and carrying a transponder (12) according to one of Claims 1 to 12,
characterized in that
the carrier element (11, 41) is a pass-shaped body, in particular an annular, cylindrical or conical body, which is partially or completely inserted into the cavity (3) of the sleeve (1) to form a positive and / or frictional fit or interference fit , wherein the portion of the carrier element (11, 41) carrying the transponder (12, 42) lies inside the sleeve. A sleeve according to claim 13, wherein the support member (11, 41) is disposed in the upper end portion (16) of the sleeve (1). A sleeve according to any one of claims 13 to 14, wherein the sleeve (1) has a cylindrical or slightly conical cavity (3) surrounded annularly by the sleeve wall (2), which at the upper end is formed by the sleeve wall (5) forming an annular constriction (5). 2) into an opening (4), and the carrier element (11) has an annular indentation or groove (13) into which, the opening (4) enclosing, annular sleeve wall (5) to form the positive connection with the carrier element ( 11) engages.

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