JP2006089910A - Funnel spinning apparatus equipped with funnel and cover member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a funnel spinning apparatus equipped with a cover means and suitable for high funnel revolution and spindle revolution, thus reducing driving energy loss of the funnel spinning apparatus caused by flow resistance as much as possible and enabling approach a spinning site of the funnel spinning apparatus as simply as possible, especially for doffing or on the breakage of a yarn. <P>SOLUTION: This funnel spinning apparatus equipped with a funnel and a cover member is characterized in that the cover member is formed as a cover sleeve 9 which is substantially cylindrical, is long extended, and has at least the length L1 of a yarn-receiving region 1, and in that an outer cover 7, a bearing unit 5 and a driving unit 6 are disposed and formed as follows; namely the cover sleeve can axially be slid from a position I where the cover sleeve is substantially slid on the funnel 4, to a position II where the cover sleeve is axially projected over the funnel substantially only the length L1 of the yarn-receiving region, for the cover. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a funnel spinning apparatus, which is provided with at least one spindle, the spindle is drivable and has a yarn receiving area,
One funnel unit is provided, and the funnel unit
-Having a funnel, which is rotatably supported, drivable or brakeable, can guide the thread inside it and concentrically covers the thread receiving area Is formed,
-It has a bearing unit for supporting the funnel directly or indirectly in a rotatable manner;
-Having a drive for driving or braking the funnel directly or indirectly,
Having a jacket, the jacket being non-rotatable, surrounding the funnel at least in a partial section, and being axially connected to the funnel;
A shielding member is provided, which is slidably supported in the axial direction with respect to the spindle axis, and substantially beyond the funnel in the axial direction from a position slid on the funnel; Slidable axially to shield the spindle and in particular the yarn package formed in the form of a cup, into a position which is substantially extended by the length of the yarn receiving area,
The present invention relates to a type in which the spindle and the funnel can slide relative to each other in the axial direction.

  Such a funnel spinning device is known, for example, from EP 0 485 880 A1 of the same applicant.

  The concept of spinning in the sense of the present invention can also be understood as twisted yarn. At that time, instead of yarn reception, yarn feeding from the yarn package may be performed. The yarn may be formed from a single yarn or may be formed from a twisted yarn.

  A shielding member, for example as described in EP 0 485 880 A1, reduces the noise load in part to the surroundings and consumes the air package around the yarn package, in particular due to the air vortex generated by the fuzz protruding from the yarn. To reduce energy, it is used especially in high-speed rotating spindles. Due to the merging of the air vortices that are carried one after the other from spindle to spindle, an air flow is formed in the longitudinal direction on both sides of the spinning machine. Furthermore, this air flow can be accompanied by the result that the free fiber ends of the formed yarn are torn, resulting in undesirable fuzzy yarn. Thereby, the air resistance of the yarn package in each case is further expanded. In this way, most of the drive energy of the spindle is wasted away from its original purpose. This negative effect, especially when the yarn package diameter is relatively large, is based on the higher peripheral speed and the increased centrifugal force acting on the yarn. It works inconveniently. For bell spinning devices or funnel spinning devices with individually driven bells or funnels (both methods and devices are considered the same within the framework of this application), spinning on the basis of additional driving devices In order to maintain as little as possible the energy consumption, which is a crucial cost factor during operation of the device, another means of maintaining a slight drive resistance is required.

  EP 0 485 880 A1 describes a device for coating a spinning device, in particular a bell spinning device comprising a bell or funnel and a spindle driven by an individual motor which can be moved up and down. The bell is driven and supported via a separate motor that surrounds the bell. The bell's lower section consists of a fixed, rigid inner cover that surrounds the bell with a small gap spacing, and multiple sleeves that can be telescopically slid over the cover. It is surrounded by a covering made up of members. In the drawn-out state, this covering shields the area of the spindle, which is provided for receiving the yarn in the form of a yarn package, here formed as a cup, at a large distance. Based on at least two telescope members, in the coated state, the distance between the outer surface of the yarn package and the inner surface of the covering body is not constant, and the distance between the covering body and the yarn package is large. Technically optimal conditions cannot be achieved. Another drawback of the device is the complex structure required to make it telescopic and the likelihood of failure, which is particularly problematic due to fouling by textile fibers.

  The spinning device known from DE 3047275A1 is provided with a spindle provided with a drive device, and surrounds the spindle, is rotatable about an extended spindle axis and is supported independently of the spindle. And a bell having a driving device. The bell has a cylindrical or funnel shape with a tube-shaped extension at the end opposite the spindle that serves as a shaft. This extension is supported in two ball bearings or in an air bearing provided on the support. Since no means for coating are provided, operation optimized for energy is not possible.

  The specification of CH681630A5 describes a spinning machine that has a spinning point with a bell that surrounds the spindle and is driven. The bell is rotatably supported via a bell bearing located on the outer surface of the bell and can be a frequency-controlled asynchronous motor or pneumatic drive, also present on the outer surface of the bell The device is driven at a predetermined rotational speed. The bell's conically widened end is provided with a rotatable ring with an eye that serves as a yarn guide member for the yarn. The yarn formed at the spinning site is wound around a yarn package made of a cup. In this embodiment, neither the bell nor the cup is encapsulated. What is important is the relative difference between the rotational speed of the bell, the rotational speed of the thread guide member and the rotational speed of the spindle. The spindle speed must always be greater than the bell speed. A device for properly adjusting the yarn tension by appropriately adjusting the spindle speed and the bell speed for any single yarn spun by the bell spinning device is described in EP 0476406 B1. Has been.

DE 34003247 describes a bell spinning device with a bell that can be driven or braked. The yarn is wound around the outer surface of the bell and fed to the spindle. The bell is supported on the bell spinning device frame in a stationary manner by means of two single-row rolling bearings fitted on the shaft at a shaft connected to the upper end of the bell shaft. The shaft has a longitudinal passage with an outlet for guiding the thread along the outer surface of the bell, which is present at the upper end of the bell shaft below the bearing. The bell is surrounded by a stationary, flappable jacket with a slight air gap. In another embodiment, another envelope that is integrally formed with the bell envelope surrounds the spindle. Both jackets are inevitably formed so that the jacket can be opened in particular in a flap manner, so that it can be used for working in a yarn package, such as removing yarn breaks, or the wound receiving sleeve can be used as an empty receiving sleeve. Can be opened for exchange. Thereby, free accessibility to the entire yarn package, spindle or spinning location is only given conditionally. In the described method and the described apparatus, it has been found that this method is only meaningful if the yarn is guided along the outer surface of the bell.
EP0485880A1 Specification DE3047275A1 specification CH681630A5 Specification EP0476406B1 Specification DE 34003247 Specification

  The object of the present invention is therefore to improve a funnel spinning device suitable for high funnel speeds and spindle speeds, with an inner thread guide and shielding means for the thread receiving areas of the funnel and spindle. The funnel spinning device minimizes the drive energy loss due to flow resistance, and the spinning location of the funnel spinning device is as simple as possible, especially for the start of spinning, doffing or when yarn breaks. To make it accessible.

In order to solve the above-mentioned problem,
The shielding member is formed as one shielding sleeve which is substantially cylindrical and extends long and has at least the length of the thread-receiving region;
-The length of the yarn receiving area substantially beyond the funnel in the axial direction from the position where the jacket, bearing unit and drive are as follows: the shield sleeve is slid over the funnel; It was arranged and formed so as to be slidable in the axial direction for shielding to a position protruding by that amount. The features which constitute the invention in an alternative or advantageous manner can be found in the dependent claims.

  The invention can in principle be used in both spinning and twisting machines that underlie the above-mentioned problems. The description of the spinning machine and the spinning process below always applies to the twisting machine and the twisting process. For those skilled in the art, such processes are in principle, for example, twisted, pseudo-twisted, cored single yarn or cored twisted yarn, methods of forming design single yarn or design twisted yarn and other method variations, and depending on the method It is known that the present invention can be carried out in the material flow direction described above or in the opposite material flow direction. Therefore, yarn acceptance can also be understood as yarn delivery within the framework of the present invention.

  With regard to funnel spinning or similar methods, the literature refers to different concepts such as Bell spinning, Ballon begrenzer spinning, cap spinning, Fliesel spinning and other names. used. However, the present invention is not limited to funnel spinning, and in general, a yarn guide member or balloon restricting member that is rotatable, can guide the yarn inside, and is substantially rotationally symmetric, Spinning device, twisting device or rewinding device adapted to surround a yarn receiving region or yarn sending region (hereinafter collectively referred to as a yarn receiving region) of a rotatable spindle for twisting or rewinding Also related.

  The funnel spinning device according to the present invention comprises at least one spindle that is rotatable and drivable about a spindle axis, comprising at least a yarn receiving area formed by a take-off sleeve fitted over the spindle, for example, and a spindle axis A funnel that is rotatably supported in the center, is drivable or brakeable, can guide the thread on the inside and is formed to concentrically cover the thread receiving area of the spindle And one funnel unit. Different funnel geometries are known from the background art. The concept of funnel is not limited to the funnel shape within the framework of the present invention, but includes a bell shape, a cylindrical shape, a truncated cone shape, or another funnel spinning method, a bell spinning method or a similar spinning method, a twisting method or a rewinding method. It can be understood as a shape suitable for implementation. The winding of the yarn is carried out in a known manner by forming a yarn package, for example in the form of a cup, on the fitted take-out sleeve or directly on the shaft. In the latter case, the shaft is advantageously configured to be removable. The spindle and funnel can move up and down relative to each other in order to carry out the spinning process, with the funnel or spindle slidable in the axial direction or both members sliding in the axial direction. Is possible. Further, the funnel unit has a bearing unit for supporting the funnel so as to be directly or indirectly rotatable, and a drive device for driving or braking the funnel directly or indirectly. Therefore, within the framework of the present invention, the drive can also be understood as a conventional brake. The funnel is at least partially sectioned and is axially connected to the funnel and surrounded by a non-rotatable jacket that shields the funnel. In the axial connection, for example, the jacket is fixed in the axial direction with respect to the funnel, so that the funnel can only carry out a rotational movement relative to the jacket relative to the spindle axis. It is formed as follows. A shielding member is provided for shielding the spindle and the yarn package, in particular the yarn received in the form of a cup. The shielding member is substantially slid on the funnel and from a position concentrically surrounding the funnel, to a position extending axially beyond the funnel and substantially the length of the yarn receiving region. Slidable axially with respect to the spindle axis for shielding. The axial slidability of the shielding member is achieved, for example, directly or indirectly, preferably by a sliding bearing carried out along the outer surface or possibly the inner surface of the jacket, or for the bearing This is achieved by external means. According to the invention, the shielding member is substantially cylindrical and is formed as one shielding sleeve that extends long and has at least the length of the yarn receiving area. Thereby, the entire yarn receiving area can be surrounded in a capsule shape. As a result, the flow loss can be largely avoided and the energy consumption of the spinning process can be reduced. The outer cover, the bearing unit, and the drive device are substantially beyond the funnel in the axial direction from the position where the shielding sleeve is substantially slid on the funnel, that is, the position that substantially concentrically surrounds the funnel. Thus, it is possible to slide concentrically with respect to the spindle axis in the axial direction for shielding to the position overhanging the length of the yarn receiving area (of course, it is also possible to slide in the opposite direction). Arranged and formed. This achieves that the spinning location is freely accessible, particularly for doffing and spinning, or when the yarn breaks, while being slid onto the jacket. Advantageously, at the upper end of the funnel, it is connected to the funnel so as not to rotate relative to it, and a shaft with an axial thread guide hole is provided for driving and rotatably supporting the funnel. The bearing unit and, in particular, the drive device formed by the drive device of the individual electric motor type are arranged on the shaft and thereby lie above the funnel. As a result, the funnel can be tightly enclosed in a non-contact manner by the jacket and the shielding sleeve. The jacket is arranged, for example, indirectly or directly on the frame of the funnel spinning machine.

  The device according to the invention will be described in detail below purely by way of example with reference to a specific embodiment schematically illustrated in the drawing. In so doing, reference will also be made to other advantages of the present invention.

1 and 2 show a possible embodiment of a funnel spinning device comprising a spindle 2 and a funnel unit 3. A spindle 2 driven around a spindle axis 26 by an individual drive device (not shown) has a yarn receiving area 1 for receiving a yarn. Yarn receiving region 1 having a length L _1, for example, the spindle 2, the yarn finishing wound in the form of a yarn package 10 as shown in FIG. 2, is formed by a circumferential surface which is at least partially surrounded. In the illustrated example, the winding of the yarn is performed in a take-out sleeve 21 that is fitted over the spindle 2. The yarn package 10 made of wound yarn is here formed as a cup. The funnel unit 3 includes a funnel 4 having a cylindrical basic shape and an end portion widened in a conical shape, which is also rotatable around a spindle axis 26. As an alternative, it is possible in particular to configure the entire funnel 4 in the form of a cylinder or a cone, or to give the funnel 4 any other shape suitable for carrying out the spinning process. The funnel 4 is coupled to the shaft 14 so as not to be relatively rotatable. Within the shaft 14 there is a central passage 22 provided consistently. Through the passage 22, the yarn reaches into the funnel 4, where the conical widened end of the funnel 4, along the inner surface of the rotating funnel 4, for example towards the yarn guide 23 formed as an eye. Guided to the lower edge of the section. When the funnel 4 covers the spindle 2 concentrically, the yarn is wound in a known manner. Funnel 4 and shaft 14 are shown as a common, integral part in the illustrated embodiment. Therefore, within the framework of the present invention, the funnel 4 and the shaft 14 can be understood inter alia as functional sections formed as separate, rigidly connected parts or as one common part. The funnel 4 forms a section overlying the spindle 2 and the shaft 14 forms an axial tubular extension for guiding the yarn, driving the funnel 4 and supporting the funnel 4. Yes. There is a transition section between the funnel 4 and the shaft 14. Instead of being integrally formed as shown in FIGS. 1 and 2, all three functional sections can be formed separately and joined together. The shaft 14 is rotatably supported via a bearing unit 5 and is driven via a drive device 6 formed as an electric motor, for example. The bearing unit 5 is arranged between the section of the shaft 14 where the drive device 6 is installed and the section connected to the funnel 4. The funnel 4 and the drive section of the shaft 6 are supported in a cantilever manner.

  The jacket 7 has a cylindrical outer surface 8 and surrounds the funnel 4 in a non-contact manner, substantially over its entire length, with a slight air gap. The air gap is about 5 mm in the area of the cylindrical section of the funnel 4. The jacket 7 ends near the lower edge of the funnel 4. The inner surface 12 of the jacket 7 is at least partially adapted to the shape of the outer surface 11 of the funnel 4. In the conical region of the funnel 4, the spacing is reduced to about 2 mm. By enclosing the funnel 4 in a capsule shape with the outer cover 7, the air resistance in the funnel 4 is reduced. This results in less energy requirements. The stationary jacket 7 is connected to the rotatable funnel 4 in the axial direction. As a result, the axial sliding of the outer jacket 7 relative to the funnel 4 is impossible. The stationary jacket 7 is connected to the frame of the funnel spinning device via the connecting member 25 in the upper section, that is, in the vicinity of the bearing unit 5.

A shielding member is slidably supported on the outer surface 8 of the outer jacket 7 so as to be slidable in the axial direction in the region of the funnel 4. The shielding member is formed as an integral shielding sleeve 9 which is cylindrical and extends long in the longitudinal direction. This sliding bearing is carried out via the inner surface 19 of the shielding sleeve 9. As an alternative, the bearing can be implemented, for example, via a slip ring that maintains the spacing. Shielding length L ₉ of the sleeve 9 is equal to the length L ₁ of at least the thread-receiving area 1. The shield sleeve 9 slides substantially on the funnel 4 as shown in FIG. 1 due to the configuration of the outer cover 7 extending in the longitudinal direction and the arrangement and configuration of the bearing unit 5 and the driving device 6. Shielded from the displaced position I to a position II that is substantially overhanging the funnel 4 in the axial direction or overhanging at least the length L ₁ of the yarn receiving area 1 as shown in FIG. Can be slidable in the axial direction. At position I, the shielding sleeve 9 slid on the jacket 7 and thus on the funnel 4 completely releases the spinning site. As a result, it is possible to insert the thread into the thread guide 23 without any problem, for example, by hand. In position II, the shielding sleeve 9 is substantially the amount corresponding length L ₁ yarn receiving region 1 (slightly farther in FIG 2 more) projecting beyond the funnel 4. As a result, the spindle 2, in particular the yarn package 10, is coated over the entire yarn receiving area 1 in the manner shown in FIG. 2 until the end of the winding process. Shielding sleeve 9, the inner diameter _{d 9} equal to the outer diameter of the substantially jacket 7 in the illustrated embodiment, depending on the type of yarn to be receiving a minimum of 4 mm, up to 25 mm, in particular about 10mm~20mm min only, the yarn package 10 is larger sized than the outer diameter D ₁₀ determined in advance. This slight spacing and the smooth inner surface 19 of the shielding sleeve 9 allow a flow optimized air flow to be generated around the spindle 2. This flow-optimized air flow reduces the noise load and the energy consumption of the spindle drive. The length L ₉ of the shielding sleeve 9 is greater than the length L ₁ of the yarn-receiving area 1 in the illustrated embodiment. This is because an overlap region is required based on a sliding bearing carried out along the outer surface 8 of the jacket 7.

  The axial sliding of the shielding sleeve 9 is performed manually. In this case, the predetermined position can be fixed, for example, via a locking means (not shown). The axial sliding of the shielding sleeve 9 is carried out via means 20 for sliding in the axial direction, for example formed as a pneumatic cylinder or as a mechanical coupling to the spindle rail. In the latter case, the shielding sleeve 9 is coupled to the spindle rail so that it can be decoupled, for example, in the axial direction. For this reason, no axial movement occurs between the spindle 2 and the shielding sleeve 9 during operation. In particular, to start doffing or spinning from the spindle rail, the shielding sleeve 9 can be disconnected and slid onto the jacket 7 in a manual manner. Since a plurality of spindles 2 and funnel units 3 are always used in the funnel spinning device, the means for sliding in the axial direction is advantageously such that a plurality of shielding sleeves 9 can be slid synchronously. Designed. As a result, for example after the spinning process has ended, all the shielding sleeves 9 can be brought simultaneously into the position I slid over the funnel. From means 20 for synchronously sliding in the axial direction so that the individual shielding sleeves 9 can be slid without manipulation of the remaining shielding sleeves 9, for example when yarn breaks at individual spinning points, Means 27 for individually separating one shielding sleeve 9 are provided. As a result, the individual shielding sleeves 9 can be at least temporarily excluded from the synchronous axial sliding of the remaining shielding sleeves 9, in particular in a manual manner. The means 27 for individually separating the shielding sleeve 9 is formed, for example, by a bayonet coupling member, a screw coupling member or a magnet coupling member.

It is a figure which shows one Example of the funnel unit of the funnel spinning apparatus by this invention provided with the shielding sleeve in the position slid on the funnel at the time of the start of a spinning process. It is a figure which shows one Example of the funnel unit provided with the shielding sleeve in the position which coat | covers the thread | yarn receiving area | region of a spindle at the end of a spinning process.

Explanation of symbols

1 thread receiving area, 2 spindle, 3 funnel unit, 4 funnel, 5 bearing unit, 6 driving device, 7 jacket, 8 outer surface, 9 shielding sleeve, 10 yarn package, 11 outer surface, 12 inner surface, 14 shaft, 19 inner surface, 20 means, 21 take-out sleeve, 22 passage, 23 thread guide, 25 coupling member, 26 spindle axis, 27 means, d ₉ inner diameter of shielding sleeve 9, D ₁₀ outer diameter of thread package 10, L ₁ length of thread receiving area 1 L ₉ Length of shielding sleeve 9

Claims (9)

A funnel spinning device comprising at least one spindle (2), the spindle (2) being drivable and having a yarn receiving area (1);
One funnel unit (3) is provided, and the funnel unit (3)
-Having a funnel (4), the funnel (4) being rotatably supported, drivable or brakeable, capable of guiding the thread inside it, and concentrically the thread Formed to cover the receiving area (1),
-Having a bearing unit (5) for rotatably or indirectly supporting the funnel (4);
-Having a drive (6) for driving or braking the funnel (4) directly or indirectly;
-Having a jacket (7), which is non-rotatable, surrounds the funnel (4) at least in partial sections and is axially connected to the funnel (4) And
A shielding member is provided, said shielding member being slidably supported in the axial direction relative to the spindle axis (26) and substantially slid on the funnel (4) (I ) To a position (II) that extends axially beyond the funnel (4) and substantially the length (L ₁ ) of the thread receiving area (1), to the spindle (2), and in particular to the cup Slidable in the axial direction to shield the yarn package (10) formed in a shape,
In the type in which the spindle (2) and the funnel (4) can slide relative to each other in the axial direction,
The shielding member is substantially cylindrical and is formed as one shielding sleeve (9) which is elongated and has at least the length (L ₁ ) of the yarn receiving area (1);
Position (I) where the jacket (7), the bearing unit (5) and the drive device (6) are slid as follows, that is, the shielding sleeve (9) is substantially slid onto the funnel (4). Can be slid in the axial direction for shielding to a position (II) that protrudes by the length (L ₁ ) of the yarn receiving region (1) substantially beyond the funnel (4) in the axial direction. A funnel spinning device comprising a funnel and a shielding member, wherein the funnel spinning device is arranged and formed as follows.   The jacket (7) has a cylindrical outer surface (8) and an inner surface (12) at least partially adapted to the shape of the outer surface (11) of the funnel (4). Funnel spinning device.   3. The funnel spinning device according to claim 1, wherein the shielding sleeve (9) is slidably supported directly on the outer surface (8) of the outer jacket (7) by its inner surface (19) so as to be slidable in the axial direction.   The funnel spinning device according to any one of claims 1 to 3, wherein the shielding sleeve (9) is formed from one member. Depending on the type of thread to be received, the shielding sleeve (9) is pre-determined in a thread package (10) which is formed in the form of a cup, in particular by a minimum of 4 mm, a maximum of 25 mm, in particular 10 mm to 20 mm. outer diameter (D ₁₀₎ has a larger dimension set internal diameter (d ₉₎ than, funnel spinning device according to any one of claims 1 to 4.   A shaft (14) which is coupled to the funnel (4) so as not to rotate relative to the shaft and has an axial yarn guide hole (22) is provided for driving the funnel (4) and rotatably supporting it. 6. A funnel spinning device according to claim 1, wherein the bearing unit (5) and the drive device (6) are arranged on this shaft.   The funnel spinning device according to any one of claims 1 to 6, wherein means (20) for sliding the shielding sleeve (9) in the axial direction is arranged correspondingly.   A plurality of spindles (2) and a funnel unit (3) are provided, and a plurality of shielding sleeves (9) are arranged correspondingly with means (20) for sliding them synchronously in the axial direction. The funnel spinning device according to claim 7.   Means (27) for individually separating at least one of the plurality of shielding sleeves (9) the shielding sleeve (9) from means (20) for axially sliding them synchronously ) So that the shielding sleeve (9) can be at least temporarily excluded from the synchronous axial sliding of the remaining shielding sleeve (9), in particular manually. The funnel spinning device according to claim 8.