What are some examples of buffer states

EP0518817A1 - Coil or. Tube transport in spinning machines - Google Patents

Coil or Tube transport in spinning machines Download PDF

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Publication number
EP0518817A1
EP0518817A1EP19920810418EP92810418AEP0518817A1EP 0518817 A1EP0518817 A1EP 0518817A1EP 19920810418 EP19920810418 EP 19920810418EP 92810418 AEP92810418 AEP 92810817 A11EP 0518817AEP0
Authority
EP
European Patent Office
Prior art keywords
buffer
machine
conveyor
spinning
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19920810418
Other languages
English (en)
French (fr)
Other versions
EP0518817B1 (de
Inventor
Jörg Wernli
Werner Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original assignee
Maschinenfabrik Rieter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CH161991priorityCritical
Priority to CH1619 / 91priority
Application filed by Maschinenfabrik Rieter AGfiledCriticalMaschinenfabrik Rieter AG
Publication of EP0518817A1publicationCriticalpatent / EP0518817A1 / de
Application granted granted Critical
Publication of EP0518817B1publicationCriticalpatent / EP0518817B1 / de
Anticipated expirationlegal-statusCritical
Expired - Lifetimelegal-statusCriticalCurrent

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Images

Classifications

    • D-TEXTILES; PAPER
    • D01 — NATURAL OR MAN-MADE THREADS OR FIBERS; SPINNING
    • D01H — SPINNING OR TWISTING
    • D01H9 / 00 — Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations; Combination of spinning-winding machine
    • D01H9 / 18 — Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations; Combination of spinning-winding machine for supplying bobbins, cores, receptacles, or completed packages to, or transporting from, paying-out or take-up stations; Arrangements to prevent unwinding of roving from roving bobbins
    • D01H9 / 187 — Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations; Combination of spinning-winding machine for supplying bobbins, cores, receptacles, or completed packages to, or transporting from, paying-out or take-up stations; Arrangements to prevent unwinding of roving from roving bobbins on individual supports, e.g. pallets

Abstract

Description

  • The invention relates to a spinning machine, the spinning positions of which are operated by a bobbin or tube transport system, which comprises individual bobbin or tube carriers and is provided with a conveyor along the spinning positions, the conveying means comprising a conveyor track extending between the working positions Carrier and an inward or outward transfer point, and a buffer each adjoins the inward or outward transfer point.
  • DOS 40 10 730 and WO 90/03461 show, inter alia, documents on a spinning machine, the spinning positions of which are driven by a bobbin or. Case transport system, which basically has the following features:
    • individual spool or tube carriers
    • Means which bring the carrier at least into their respective working positions with respect to the spinning stations
    • Means to support the weights of the girders and their loads, and
    • a conveyor with a conveyor track along the served spinning stations for moving the carriers along the web, at least between their respective working positions, and an inward or outward transfer point or a loading or unloading point.
  • The bobbin or tube carriers are normally designed as peg carriages, also called peg trays, and the weight-absorbing means are mostly formed as support rails, whereupon the peg carriages slide along the thread path during their movements. The position-determining means preferably comprise drivers which can each be moved along the track by the conveying means in order to bring about a corresponding movement of the respective pin carriage assigned to this driver. A guide can be provided to guide the drivers along the path in their movements. This guide can be provided on the mounting rail or also separately from the mounting rail. The driver can be designed as a pin carriage receiving gripper, which can have arms of different lengths. (WO 90/03461, Figures 21 and 22).
  • The movement of a driver brought about by the conveying means is preferably always created in only one direction along the path. It can for example be effected by a traction means that extends along the track.
  • The peg slides can be removed from the track or fed into the track, or their loads can be exchanged while the peg slides themselves do not leave the track.
  • According to the German patent application No. P 41 13 092.8, it is provided that the peg carriage at the infeed point is sequentially fed into the carrier path during the inward transfer in such a way that a newly infiltrated peg carriage is taken along by the next carrier moving past the inward feed point along the track and thereby is moved against a shoulder in such a way that the pin slide is forced into a gripper part of the driver, so that it is subsequently positioned by the gripper part.
  • The spinning machine, or the conveying means, delivers the carriers or the bobbins to a "sink" and receives carriers or sleeves from a "source". The "sink" and the "source" can be formed by a single further processing unit, e.g. a winding machine. But they can also be formed by entry and exit points of a transport system that can work automatically, semi-automatically or even manually. For example, the transport system delivers reels to predetermined or indefinite places and receives tubes back from the same or even from different places. The spinning machine or the conveyor is preferably designed in such a way that it can work together with all of these different further processing variants, i.e. the machine structure or the machine control does not have to be individually adapted to each individual further use variant.
  • For the spinning machine or the conveying means or its control, a "sink" is essentially characterized by its "capacity" and a "source" is characterized by its "delivery capacity". Provision is now made for the spinning machine or the conveying means assigned to the spinning machine to be designed for automatic adaptation to the absorption capacity of its sink or the delivery capacity of its source. The control of the spinning machine or of the conveying means can be designed in such a way that it continuously or periodically determines the capacity of the supplied sink or the supply capacity of the supplying source and carries out or triggers a corresponding adaptation of the controlled system.
  • The capacity of a sink or the ability to supply a source will normally be subject to fluctuations over time. Where the receptivity or ability to supply is determined periodically, the periodicity of the determination should ideally be selected in relation to the expected periodicity of the fluctuations so that the controlled system can also adapt to fluctuations of a relatively short wavelength. However, it will hardly be worthwhile to chase after every short-wave fluctuation in the absorption capacity or the delivery capacity of the connected sink or source, since individual short-wave fluctuations can be compensated for by smoothing and a longer period of such short-wave fluctuations tends to indicate a fault in the connected system. what could possibly be indicated by an alarm.
  • The spinning machine or the conveyor is, however, preferably provided with means to determine when the capacity of a sink or the ability of a source to supply declines in such a way that there is no space to take over a carrier from the conveyor or no carrier to transfer it to the conveyor . The control should react to stop the dispensing of spools / carriers or take over of sleeves / carriers. Such a system is described in our German patent application No. P 41 13 090.1.
  • In principle, the absorption capacity could be determined by the sink or the supply capacity by the source and passed on to the spinning machine as a suitable signal. The corresponding means in the spinning machine is then a suitable signal receiver (signal input).