JP7009115B2 - A suction device for sucking the thread end of the thread wound in the take-up package, and a method for monitoring the suction channel portion of the suction device by sensing. - Google Patents

Description

In the present invention, a part of the suction channel to which a negative pressure can be applied is provided in a suction device for sucking the thread end of the yarn wound in the take-up package and a swivel suction device of the textile machine that manufactures the take-up package. With respect to methods for monitoring by sensing.

Such a suction device and the accompanying method for monitoring the suction channel portion to which a negative pressure can be applied by sensing are for winding a package, that is, a so-called winding package such as a twill winding package. It is used in textile machines constructed in. In this context, for example, winders and open-ended spinning frames can be mentioned.

Such a winder is known, for example, from German Patent Application Publication No. 19640184 (DE 196 40 184 A1). The take-up machine has a plurality of take-up units, each of which is used to wind the yarn coming from the spinning cup into a take-up package. When thread breakage or thread breakage occurs, the end on the thread side is wound around the peripheral surface of the take-up package. In order to join the cut yarn or both yarn ends of the cut yarn, so-called splicing, the yarn end on the take-up package side is pulled out from the peripheral surface of the take-up package to a predetermined length, and the take-up unit. It is inserted into a splicing device associated with, processed, and spliced together with the yarn end on the spinning cup side. A swivel suction device with a suction nozzle is used to pull out the thread end on the take-up package side, and by swiveling this suction device, the open orifice of the suction device is brought closer to the surface of the take-up package. .. The suction nozzle is configured to apply a negative pressure, which forms a suction flow in the suction channel of the suction nozzle. When negative pressure is applied, the take-up package is rotated in the take-up direction or in the direction opposite to the take-up direction, whereby the thread end on the take-up package side is picked up from the surface of the take-up package, thereby pulling the thread. It can be captured and taken along with the swirling motion of the suction nozzle. The suction device includes a sensor device for detecting the presence of a trapped thread inside a suction channel terminated by a suction nozzle orifice. The sensor devices are arranged inside the suction channel at intervals so that a predetermined thread length can be sucked into the suction nozzle orifice. When the predetermined thread length is reached, a sensor signal is transmitted, and the clamp of the captured thread to which the predetermined thread length is sucked is triggered by the control device.

Further suction devices for winders and open-ended spinning frames are known from European Patent Application Publication No. 30402999 (EP 3 040 299 A1). This suction device has a transparent peripheral wall portion, and the transparent peripheral wall portion makes it possible to observe the inside of the adjacent portion of the suction channel of the suction device by sensing. The sensor or sensor device is positioned fixedly in the work unit, whereby the sensor or sensor device is swung to the thread trapping position facing the transparent peripheral wall portion when the suction device is turned to the transparent peripheral wall portion. It is arranged so that the monitoring of the suction channel portion via the sensor can be performed.

German Patent Application Publication No. 19640184 European Patent Application Publication No. 3040299

According to the present invention according to the first aspect, starting from the above-mentioned prior art, there is proposed a suction device for sucking the yarn end of the yarn wound in the take-up package. The take-up package can be a take-up tube rotatably held in the package frame of a textile machine such as a take-up machine or an open-ended spinning frame, on which the yarn is wound or taken up. Be done.

The suction device typically includes a housing forming a suction channel, the suction channel extending between a first housing opening and a second housing opening, said first. The housing opening is used to suck the thread end into the suction channel, and the second housing opening is the take-up package of a textile machine such as a winder or open-end spinning machine. It is used to connect to a suction point coupled to a negative pressure supply of a rotatably held working unit.

The housing has a transparent peripheral wall portion or an opening peripheral wall portion for exposing a part of the suction channel between the first housing opening and the second housing opening. A wide variety of embodiments of such housings are well known, especially with respect to materials, shapes, and dimensions, and thus are described below substantially only with respect to aspects of the invention that differ substantially from these conventional embodiments. Will be done.

For example, the suction device can be a so-called suction nozzle. The suction nozzle is combined with a suction tube and a suction head coupled to the suction tube and having a suction nozzle orifice that constitutes a first housing opening. The suction device or suction nozzle is preferably composed of one component or a plurality of components. In particular, the suction tube and suction head can be individual elements, and the suction tube and suction head are suctioned from a first housing opening or suction nozzle orifice to allow suction or capture of the thread end. It is possible to connect these individual elements to each other via the corresponding coupling points so as to form one common passage to the second housing opening associated with the tube. The peripheral wall portion can be selectively formed on a suction tube or a suction head.

The suction device is further formed and configured to work with a sensor device for monitoring exposed suction channel portions.

Unlike previously known embodiments, the sensor device according to the first alternative embodiment is to detect the presence or absence of the sucked thread in the exposed suction channel portion, or to detect the exposed suction. It is arranged and configured on the surface of the transparent peripheral wall portion so as to monitor the exposed suction channel portion through the peripheral wall portion with respect to the presence or absence of the thread in the channel portion. In this case, the sensor device is arranged on the transparent peripheral wall portion on the side facing the exposed suction channel portion. Therefore, the transparent peripheral wall portion is configured so that the inside of the exposed suction channel portion can be observed by sensing.

According to the second alternative embodiment, the sensor device is used to detect the presence or absence of the sucked thread in the exposed suction channel portion, or the presence or absence of the thread in the exposed suction channel portion. With respect to, it is arranged and configured within the open peripheral wall portion to monitor the exposed suction channel portion through the peripheral wall portion. In this case, the sensor device projects at least in a plane defined by the opening peripheral wall portion. In this case, the sensor device preferably fills the defined plane by directly or indirectly abutting the edge of the opening peripheral wall portion that revolves around the plane. Indirect contact in this regard refers to at least one other element, eg, an element that can be a sealing element for improving the sealing effect and / or an adapter for accommodating sensor devices of different dimensions. It should be understood that it is a contact with the object sandwiched between them. By using such an adapter, for example, the degree of freedom regarding the selection of a commercially available sensor device can be increased. In the case of direct abutment, the sensor device abuts on the edge of the opening peripheral wall portion without another intervening element.

In the preferred embodiment described above, the presence or absence of the thread is detected so that the detection is performed in the transverse direction, particularly in the direction perpendicular to the suction action direction generated in the suction channel portion when a negative pressure is applied. , The sensor means associated with the sensor device is preferably located on the plane defined by the opening peripheral wall portion, adjacent to the plane, or adjacent to the transparent peripheral wall portion. .. Therefore, the peripheral wall portion is configured to support the sensor device at a desired arrangement position or to hold the sensor device in a fixed position relative to the peripheral wall portion.

In an alternative form, more preferably, the sensor device projects so as to penetrate the plane defined by the opening peripheral wall portion, thereby exposing the sensor means associated with the sensor device. The sensor device can be placed in the opening peripheral wall portion so as to be placed in the suction channel portion. Thereby, the detection range can be expanded so that the portion of the suction channel adjacent to the exposed suction channel portion can be better monitored together along the suction action direction. can. The size of the detection range can be varied depending on the penetration depth or arrangement of the sensor means in the exposed suction channel portion.

The solution proposed by the present invention, on the one hand, allows the sensor device to be configured and arranged more flexibly with a simpler structure. The region of the working unit of the textile machine opposite the suction channel at the thread capture position of the suction device can be freely configured regardless of the need for placement of the sensor device. On the other hand, the distance between the monitored area in the suction channel portion and the sensor device can be minimized. Furthermore, the sensor device can be placed on the surface of the suction device, if necessary. This allows, for example, the sensor device to be placed very close to the orifice region of the suction nozzle, which can significantly reduce the yarn capture time and thus significantly improve the productivity of textile machinery. Can be done. Furthermore, the minimum switching time, the minimum energy consumption, and the minimum yarn waste amount can be guaranteed.

Further advantageous embodiments for achieving the above-mentioned advantages or further advantages are each subject to dependent claims.

According to one preferred embodiment, the transparent peripheral wall portion or the open peripheral wall portion starts from the region center point of the transparent peripheral wall portion or the open peripheral wall portion and is along the longitudinal extending axis of the suction channel. The spacing with respect to the first housing opening is shorter than the spacing with respect to the second housing opening. This allows the sensor device to be placed in the vicinity of the orifice in a very simple way.

Preferably, the housing is composed of at least two parts by a separate suction nozzle including the first housing opening and a separate suction tube including the second housing opening. And the suction nozzle can be connected to each other so as to form the suction channel via a connection portion, and the transparent peripheral wall portion or the opening peripheral wall portion is formed by the suction tube and / or the suction nozzle. There is. Therefore, the position of the peripheral wall portion or the sensor device can be determined later by exchanging a separate suction tube and / or a separate suction nozzle as needed.

According to one preferred embodiment, the sensor device is configured to wirelessly transmit sensor data, or the sensor device is located in the suction device, wirelessly for transmitting sensor data. It is coupled to the transmission device. Preferably, the sensor device comprises a reflection sensor having a Bluetooth interface and / or a WLAN interface, at least for wireless transmission of the sensor data. This makes it possible to save wiring costs that would otherwise be required. The sensor data is at least information detected by the sensor device regarding the presence or absence of threads in the suction channel portion to be monitored. The sensor data can also be information about the sensor device.

The sensor device can be operated, for example, by a battery. In this case, preferably, the energy state of the sensor device can be transmitted via the Bluetooth interface and / or the WLAN interface to allow timely replacement of the battery.

Alternatively or additionally, the sensor device may be operated, preferably by a non-contact energy transfer device. The non-contact energy transfer device can be placed in the suction device with or away from the sensor device. The latter arrangement, by its very nature, requires some, but manageable, wiring costs.

More preferably, the Bluetooth interface and / or the WLAN interface is configured to receive signals that affect the sensor device. This allows, for example, to initiate or trigger control and / or adjustment of the sensor device.

Alternatively or additionally, the wireless transmission device may include a Bluetooth interface and / or a WLAN interface configured as described above. This makes it possible to select one general sensor device from a relatively large number of general sensor devices. For example, it is only necessary to connect the cable-connected sensor device to the wireless transmission device. Further, the wireless transmission device can be provided with a redundant transmission system capable of undertaking the transmission and / or reception of data when the transmission function of the Bluetooth interface and / or the WLAN interface of the sensor device fails.

According to a more preferred embodiment, the housing is at least one located away from the peripheral wall portion for arranging the sensor device, or particularly for arranging another sensor device of the same type as the sensor device. Includes another transparent peripheral wall portion or open peripheral wall portion. This allows the suction device to be provided with multiple placement positions for one or more sensor devices.

According to the second aspect, according to the present invention, a part of the suction channel to which a negative pressure can be applied is further provided in the swivel suction device of the textile machine for manufacturing the take-up package, particularly the take-up machine or the open-end spinning frame. A method for monitoring by sensing is proposed. The suction channel portion is defined by a transparent peripheral wall portion or an opening peripheral wall portion of the housing forming the suction channel. The yarn wound in the take-up package can be captured by sucking the yarn end of the yarn into the suction channel at the reachable yarn trapping position of the suction device.

The method comprises applying a negative pressure to the suction channel before or at the arrival of the thread capture position, or at the thread capture position. The application of the negative pressure with respect to the swirling motion of the suction device can be selectively initiated on demand. Importantly, a negative pressure is applied to the suction channel when the yarn is trapped to ensure suction at the end of the yarn.

In the method, the presence or absence of the thread in the suction channel portion exposed by the transparent peripheral wall portion or the open peripheral wall portion by using a sensor device arranged on the surface of the transparent peripheral wall portion or in the opening peripheral wall portion. It features a step to detect. This makes it possible to achieve the advantages described at the beginning as well. The swivel suction device can preferably be one of the preferred embodiments of the suction device described above according to the first aspect, thereby guaranteeing the advantages associated with it.

According to one preferred embodiment, the method is at least said with the sensor device or with a wireless transmission device associated with the sensor device and located in the housing of the suction device. Includes a step of wirelessly transmitting information regarding the presence or absence of the thread detected by. Thereby, the information detected by the sensor device, and preferably the information related to the sensor device, is directly related to the working unit within the transmission range of the sensor device or the wireless transmission device, almost independently of the position. Can be called.

More preferably, in a further step, data such as control commands can be wirelessly transmitted to the sensor device, in particular using a wireless transmission device. Thereby, as an example, the control function or adjustment of the sensor device described above can be started and executed.

Further features and advantages of the invention will be apparent from the claims and the following description of preferred embodiments of the invention, based on the drawings and illustrations. The individual features can be realized individually or in any combination of a plurality in the preferred embodiments of the present invention.

Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

FIG. 3 is a schematic side sectional view of a suction device according to one embodiment. It is a schematic rear view of the suction device according to a further embodiment.

In the following description of the embodiments according to the present invention, the same or similar reference numerals will be used for elements having similar functions shown in different drawings, and the description of these elements will be omitted.

FIG. 1 shows a schematic side sectional view of the suction device 1 according to one embodiment.

The suction device 1 includes a housing 2 having a suction channel 4. The suction channel 4 extends between the first housing opening 6 and the second housing opening 8, and the first housing opening 6 is wound into a take-up package (not shown). Used to suck the yarn end 12 of the yarn 10 into the suction channel 4, the second housing opening 8 is the negative pressure of the working unit of the textile machine, which rotatably holds the take-up package. Used to connect to a suction point coupled to a supply (not shown). The textile machine can be, for example, a winder or an open-ended spinning frame.

The housing 2 is composed of two parts by a separate suction nozzle 14 including a first housing opening 6 and a separate suction tube 16 including a second housing opening 8. The suction tube 16 and the suction nozzle 14 are connected to each other so as to form a suction channel 4 via the connection point 18. In a preferred embodiment, the free end of the suction nozzle 14 is snugly inserted into the open free end of the suction nozzle 16, and the connection point 18 is a threaded connection for attaching the suction nozzle 14 to the suction tube 16. Has 19 (Fig. 2). Alternatively, these free ends may be connected to each other in a particularly dissociable manner, for example by press fitting or locking connection.

The suction device 1 has an opening peripheral wall portion 20, and a part of the suction channel 4 is exposed by the opening peripheral wall portion 20. The opening peripheral wall portion 20 has a distance from the first housing opening 6 along the longitudinal extending axis of the suction channel 4 starting from the region center point of the opening peripheral wall portion 20, and the second housing opening 8 is provided. It is shorter than the interval to. In this case, the longitudinal extension axis of the suction channel 4 is defined by the central longitudinal axis of the suction channel 4 extending between the first housing opening 6 and the second housing opening 8. In the embodiment shown in FIG. 1, the opening peripheral wall portion 20 is formed in the vicinity of the connection portion 18.

The sensor device 22 is arranged on the opening peripheral wall portion 20 so that the sensor means 24 of the sensor device 22 is arranged in the opening peripheral wall portion 20. The sensor means 24 projects in a plane defined by the opening peripheral wall portion 20. The sensor device 22 is configured to detect the presence or absence of the sucked thread 10 in the exposed suction channel portion. The detection range 26 of the sensor device 22 extends from the sensor means 24 in a direction crossing the longitudinal extension axis, particularly in a conical shape, toward the opposite inner wall of the suction channel 4.

The opening peripheral wall portion 20 is completely covered by the sensor device 22. In this case, the sensor device 22 seals the passage formed by the opening peripheral wall portion 20 in order to avoid leakage of negative pressure or suction action in the suction channel 4, and thus loss action. The sensor device 22 can be attached to the housing 2 by conventional attachment methods such as gluing, locking, screwing and the like. In particular, the sensor device 22 is dissociably attached to the housing 2.

In a preferred embodiment, the sensor device 22 is configured to wirelessly transmit sensor data. For wireless transmission of sensor data, the sensor device 22 includes, for example, a normal reflection sensor or an optical sensor and a normal Bluetooth interface and / or a WLAN interface. More preferably, the sensor device 22 can be configured to receive and process control signals that affect the sensor device 22 via these interfaces. This makes it possible to trigger and execute, for example, control and adjustment of the sensor device 22 and the like. The sensor device 22 can also be configured to transmit state information about the sensor device 22 via the interface.

To completely avoid wiring costs, the current supply to the sensor device 22 is carried out by an energy supply unit provided in the sensor device 22, such as a battery or a non-contact energy transfer device. Alternatively or additionally, the sensor device 22 may be supplied with at least the required operating energy via a connecting line connected to an energy supply unit located distant from the sensor device 22.

FIG. 2 shows a schematic rear view of the suction device 1 according to a further embodiment. The suction device 1 is configured to be substantially the same as the embodiment shown in FIG. 1, but only the arrangement of the opening peripheral wall portion 20 and the arrangement of the sensor device 22 are different. In this embodiment, the opening peripheral wall portion 20 is arranged in the curved region of the suction nozzle 14, and is therefore arranged closer to the first housing opening 6.

The suction device 1 shown in FIGS. 1 and 2 is specifically designed for a winder for rewinding yarn from a yarn feed bobbin to a take-up package. The structure and configuration of such a suction device, except for the features constituting the present invention, is as usual and therefore does not require further description.

In the field of open-ended spinning frames such as rotor type open-ended spinning frames, the suction device is designed by the same principle as the suction device 1 shown in FIGS. 1 and 2, and the situation of the open-ended spinning frame. Is simply adapted to. The arrangement of the opening peripheral wall portion and the sensor device as shown in FIGS. 1 and 2 can be easily realized by an appropriate method in the case of such a suction device.

According to a further embodiment (not shown), a transparent peripheral wall portion can be provided in the suction tube 16 and / or the suction nozzle 14 instead of the opening peripheral wall portion. Such a transparent peripheral wall portion has an advantage that no countermeasure against leakage is required as compared with the open peripheral wall portion. The transparent peripheral wall portion is configured so that the sensor device arranged on the transparent peripheral wall portion can monitor a part of the suction channel 4 exposed by the transparent peripheral wall portion with respect to the presence or absence of the thread 10. For this reason, the transparent peripheral wall portion is transparent in order to detect a required detection signal such as an optical signal when the reflection sensor or the optical sensor is used. Therefore, the transparent peripheral wall portion forms a window at an arrangement position where the inside of the suction channel 4 can be observed by sensing.

According to a further embodiment not shown, a wireless transmission device having a Bluetooth interface and / or a WLAN interface is provided, and these interfaces are coupled to the sensor device for wireless transmission of the sensor data of the sensor device. ing. In order to keep the wiring cost as low as possible, the wireless transmission device may be placed in the suction tube or suction nozzle at a position close to the sensor device or adjacent to the sensor device.

In a further embodiment (not shown), the housing portion forming the suction tube and / or the suction nozzle is provided with a plurality of open peripheral wall portions and / or transparent peripheral wall portions. Through these, it becomes possible to monitor each corresponding exposed suction channel portion with respect to the presence or absence of a thread by using a sensor device that can be placed on the open peripheral wall portion or the transparent peripheral wall portion.

By using one of the above embodiments in a textile machine that manufactures a take-up package, such as a take-up machine or an open-ended spinning frame, the negative pressure of the swivel suction device according to one embodiment can be reduced. A method for monitoring the applicable suction channel by sensing can be implemented. The method comprises applying a negative pressure to the suction channel before or at the arrival of the thread trapping position, or at the thread trapping position. The thread trapping position corresponds to a predetermined position of the suction device, which is such that the thread wound on the take-up package can be captured by sucking the thread end of the thread into the suction channel. The method further comprises the step of detecting the presence or absence of threads in the suction channel portion exposed by the transparent peripheral wall portion or the open peripheral wall portion using a sensor device arranged on the surface of the transparent peripheral wall portion or in the opening peripheral wall portion. Have. The method further wirelessly transmits information about the presence or absence of threads detected by the sensor device using or associated with the sensor device and using a wireless transmission device located in the housing of the suction device. including.

The above embodiment illustrated in the drawings is only selected as an example. Multiple different embodiments can be combined with each other as a whole or with respect to individual features. It is also possible to supplement one embodiment with the characteristics of another embodiment.

If an embodiment includes a conjunction of "and / or" between a first feature and a second feature, this embodiment is according to one embodiment of the first feature. It can be read that it has both the first feature and the second feature, and according to another embodiment, it has only one of the first feature or the second feature.

Claims (6)

A suction device (1) for sucking the thread end (12) of the thread (10) wound on the take-up package.
The suction device (1) includes a housing (2) forming a suction channel (4).
The suction channel (4) extends between the first housing opening (6) and the second housing opening (8).
The first housing opening (6) is used to suck the thread end (12) into the suction channel (4).
The second housing opening (8) is used to connect to a suction point coupled to a negative pressure supply of a working unit that rotatably holds the take-up package of a textile machine. ,
The housing (2) has a transparent peripheral wall portion (4) for exposing a part of the suction channel (4) between the first housing opening (6) and the second housing opening (8). 20) or has an opening peripheral wall portion (20),
The suction device (1) cooperates with a sensor device (22) for monitoring an exposed suction channel portion.
In the suction device (1)
The sensor device (22) is on the surface of the transparent peripheral wall portion or in the opening peripheral wall portion (20) so as to detect the presence or absence of the sucked thread (10) in the exposed suction channel portion. Arranged and configured,
The detection range (26) of the sensor device (22) is a conical shape from the sensor means (24) of the sensor device (22) in a direction crossing the longitudinal extending axis of the suction channel (4). It extends toward the opposite inner wall of the channel (4) and extends toward the opposite inner wall.
The housing (2) is at least by a separate suction nozzle (14) including the first housing opening (6) and a separate suction tube (16) including the second housing opening (8). It consists of two parts
The suction tube (16) and the suction nozzle (14) can be directly connected to each other so as to form the suction channel (4) via the connection point (18).
The transparent peripheral wall portion or the opening peripheral wall portion (20) is formed by the suction pipe (16).
The transparent peripheral wall portion or the opening peripheral wall portion (20) is formed in the vicinity of the connection portion (18).
A suction device (1). The transparent peripheral wall portion or the opening peripheral wall portion (20) starts from the region center point of the transparent peripheral wall portion or the opening peripheral wall portion (20) and is along the longitudinal extending axis of the suction channel (4). The spacing with respect to the first housing opening (6) is shorter than the spacing with respect to the second housing opening (8).
The suction device (1) according to claim 1. The sensor device (22) is configured to wirelessly transmit sensor data.
Or,
The sensor device (22) is coupled to a wireless transmission device for wirelessly transmitting sensor data, which is arranged in the suction device (1).
The suction device (1) according to claim 1 or 2 . The sensor device (22) is a reflection sensor having a Bluetooth interface and / or a WLAN interface for wirelessly transmitting the sensor data and particularly for receiving a control signal affecting the sensor device (22). including,
The suction device (1) according to claim 3 . The wireless transmission device includes a Bluetooth interface and / or a WLAN interface for wirelessly transmitting the sensor data and particularly for receiving a control signal affecting the sensor device (22).
The suction device (1) according to claim 3 . The housing (2) is the transparent peripheral wall portion or the opening peripheral wall portion for arranging the sensor device (22), or particularly for arranging another sensor device of the same type as the sensor device (22). Includes at least one other transparent peripheral or open peripheral portion (20) located away from (20).
The suction device (1) according to any one of claims 1 to 5 .

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