EP1845182A1 - Machine à tricoter du type chaîne - Google Patents

Machine à tricoter du type chaîne Download PDF

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Publication number
EP1845182A1
EP1845182A1 EP06075860A EP06075860A EP1845182A1 EP 1845182 A1 EP1845182 A1 EP 1845182A1 EP 06075860 A EP06075860 A EP 06075860A EP 06075860 A EP06075860 A EP 06075860A EP 1845182 A1 EP1845182 A1 EP 1845182A1
Authority
EP
European Patent Office
Prior art keywords
knitting machine
piece length
thread
knitted fabric
counter
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
EP06075860A
Other languages
German (de)
English (en)
Other versions
EP1845182B1 (fr
Inventor
Michaela Lorenz
Joachim Kirchner
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.)
Karl Mayer Textilmaschinenfabrik GmbH
Original Assignee
Karl Mayer Textilmaschinenfabrik GmbH
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
Application filed by Karl Mayer Textilmaschinenfabrik GmbH filed Critical Karl Mayer Textilmaschinenfabrik GmbH
Priority to EP06075860A priority Critical patent/EP1845182B1/fr
Priority to DE502006001828T priority patent/DE502006001828D1/de
Priority to ES06075860T priority patent/ES2313540T3/es
Priority to IL176593A priority patent/IL176593A/en
Publication of EP1845182A1 publication Critical patent/EP1845182A1/fr
Application granted granted Critical
Publication of EP1845182B1 publication Critical patent/EP1845182B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/34—Take-up or draw-off devices for knitted products

Definitions

  • the invention relates to a knitting machine with a thread source, an effective range, a goods decrease, which receives a knitted fabric produced in the knitting area, and connected to a machine control piece length counter, which triggers a predetermined action in the knitting machine upon reaching a predetermined length of the knitted fabric.
  • the knitting machine is stopped, for example, so that the generated length of the knitted fabric can be separated, for example, to be removed and packaged in the form of a knitted roll with a certain length.
  • the invention will be described below with reference to the production of knitted nets for the packaging of hay bales. However, it is also applicable to other knitwear in a comparable way.
  • the hay bales When packing cylindrical hay bales, the hay bales, once they reach the desired size, are surrounded by a knitted net so that they do not fall further below.
  • This network is unwound from a roll whose diameter must not exceed a predetermined value, for example a maximum of 30 cm. Accordingly, the number of hay bales that can be packed with such a net is limited. The worker, who operates the hay bale machine, must therefore recognize in time, when the net stock comes to an end.
  • the knitted net with one or more marking strips at its end. These marker strips have a different color, shape, or texture than the rest of the mesh. As soon as the strip appears on the net, the operator knows that he has to replace the supply roll.
  • An alternative embodiment provides that one acts on a limited length of the knitted fabric one or more marking threads.
  • this embodiment has the advantage that you can use a through-dyed or otherwise permanently marked thread for the marker strip or.
  • the effort in the production of provided with a marker strip knitwear is relatively high, because in fact a permanent monitoring of the knitting process by an operator is required.
  • the invention has for its object to enable the production of a knitted fabric with at least one marked area with little effort.
  • a second piece length counter is connected to the machine control, which triggers a predetermined second action in the knitting machine upon reaching a predetermined second length of the knitted fabric.
  • both the first piece length counter and the second piece length counter count up as the length of the knitted fabric increases. If the second For example, if the piece length counter has reached a predetermined value, then the knitting machine may be stopped and a signal is output which indicates to the operator if necessary that the length of the marked area has been reached. The operator may then remove, for example, the knitted marking yarn (s) and restart the knitting machine.
  • the knitting machine can then continue the knitting process until, for example, the predetermined length of the knitted fabric is reached, which is indicated by the first piece length counter.
  • the operator must therefore be present, if at all necessary, only at a few predetermined times on the machine, namely at the start and at the end of the kneading process and at the transition from a marked area to an unmarked area. As will be explained below, this presence is not necessarily required in all cases.
  • a second piece length counter it is thus possible in a simple manner to realize additional working possibilities for the knitting machine, which hitherto required permanent monitoring.
  • the two piece length counters are synchronized with each other.
  • This has the advantage that one obtains similar signals from both piece length counters and optionally also can give similar signals to both piece length counters.
  • the piece length counters can be designed in different ways. They can be realized as mechanical piece length counters. A purely electrical training is possible if, for example, the length of the knitted fabric from the number of determined rows of stitches. In this case, the piece length counters do not even have to be physically present. It is then sufficient if the count value of the effective mesh rows can be taken into account in the machine control.
  • the first piece length counter has a first reset input and the second piece length counter a second reset input, wherein the two reset inputs are interconnected so that with a reset signal to the first reset input and the second reset input receives a reset signal, but at a reset signal to the second reset input the first reset input receives no reset signal. It is based on the assumption that on reaching the predetermined length of the knitted fabric, which is determined by the first piece length counter, a reset of both piece length counter is required so that a new "production run" can be started, so the production of a new length of Knitted fabric with a renewed marked area. For this reason, both piece length counters are reset at the same time. If necessary, the same reset signal can be used for this purpose.
  • the situation is different when the second piece length counter has reached its preset value. If you then want to reset the second piece length counter, the first piece length counter should not be reset so that the first piece length counter can still be used to monitor the length of the knit fabric. The use of partially against each other locked reset inputs is therefore a particularly simple measure.
  • the second piece length counter has a stop-down counter.
  • the machine is then stopped and the marking thread removed. Thereafter, the knitting machine generates another area without marking threads.
  • the length of this area can also be determined by the second piece length counter.
  • the length of this third area can also be controlled by the second piece length counter.
  • further marked and unmarked areas may be provided.
  • the intermediate stop counter is incremented so that after a predetermined sequence of marked and unmarked areas, the production of the knitted fabric can be continued continuously without the second piece length counter causing a new stop. This continuous production process starts when the stop-counter has reached its predetermined value.
  • the second piece length counter preferably has a storage device in which a plurality of setpoint values are stored, wherein the setpoint values can be read out in dependence on the intermediatestopping counter.
  • the setpoint values can be read out in dependence on the intermediatestopping counter.
  • the thread source preferably has at least one marking thread carrier which donates a marking thread.
  • a separating device acting on the marking thread is connected to the machine control. In this case, intervention by an operator is unnecessary even when reaching the end of the marked area.
  • the separator can sever the marking thread, so that the subsequent area of the knitted fabric is no longer provided with the marking thread. The operator must then act at most at the beginning of a new length of the knitwear to insert the marker thread back into the guide needle or otherwise connect with the knitwear.
  • the separating device has a thread holding device.
  • the front end of the marking yarn is held after the cutting, so that it is not free to move in the knitting machine.
  • the thread holding device so you avoid interference.
  • the end of the marking thread, which is connected to the knitted fabric, however, causes no problems, because this end is acted upon in the knitted fabric. From this end so no disturbances are to be feared.
  • the thread holding device is designed as a thread clamp.
  • a thread clamp can capture the thread quickly and release it again without much effort, so that the operator can start the brand thread without much effort to incorporate into the knit fabric when starting a new length of the knitted fabric or when creating another marked area of the knitted fabric.
  • the second piece length counter after reaching the predetermined second length of the knitted fabric prevents starting the knitting machine in overdrive.
  • This provides an additional security measure which consists in that the knitting machine after the binding of the marking thread must first start in crawlspace. In the crawlspace, the operator can easily check whether the marking thread is correctly integrated into the knitwear. If the operator determines that this condition is met, then the machine may continue running in overdrive. To check the fact that the marking thread is properly integrated, usually enough few rows of stitches, so that the operator is not stressed too much time.
  • the second piece length counter triggers the second action in the knitting machine without stopping the knitting machine.
  • the marking area can thus be introduced into the knitted fabric without a stopover, that is to say without production interruption. This minimizes the risk of local structural changes in the knitted fabric resulting from stopping and restarting the knitting machine.
  • Fig. 1 shows a highly schematic representation of a knitting machine 1 with a thread source 2, an effective range 3 and a removal of goods 4.
  • the knitting machine 1 is used here for the production of hay bale nets.
  • Each knitting thread 8 is guided by a guide needle 9, which is arranged in the active region 3, and forfeited by means of knitting needles 10 to form a fabric.
  • the effective range 3 is shown here in a highly schematic form.
  • at least two rows of guide needles 9 are provided, each row of guide needles 9 being attached to a guide bar.
  • a knitted fabric 11 is produced from the knitting threads 8, for example the above-mentioned hay bale net, which is pulled off via a plurality of draw-off rolls 12, 13 and wound on a roll 14 which is arranged in the drop-off 4.
  • the knitting machine 1 is controlled by a machine control 16, for example, by a PLC programming may have been set up.
  • the machine control 16 "knows" when the predetermined length of the knitted fabric 11 is reached, a first piece length counter 17 is provided which emits a corresponding signal to the machine control 16 upon reaching the predetermined length of the knitted fabric 11, so that the machine control 16, the cross-cutting device 15 is actuated and outputs a corresponding signal, for example a screen display, so that an operator can see immediately what measures must be taken in the then stopped knitting machine 1 to put the knitting machine 1 again in a production state.
  • a marking thread carrier 18 is provided, for example a spool, on which a marking thread 19 is wound.
  • the marking thread 19, which is pulled off from the marking thread carrier 18, is likewise introduced into the knitting area 3 and guided through a laying needle 9, through which a knitting thread 8 of the plastic film 6 is already guided.
  • this is a guide needle 9 in the region of a longitudinal edge of the knitted fabric 11.
  • the marking thread 19 is then acted upon in the knitted fabric 11, so that in the region of the longitudinal edge, a marking area is formed.
  • several marking threads 19 can be acted simultaneously in the knitted fabric 11. These are then suitably guided by different guide needles 9.
  • a separating device 20 is provided with which the marking yarn 19 can be severed.
  • the separating device 20 has a knife 21 and two clamping jaws 22, 23.
  • the separating device 20 is actuated.
  • the knife 21 cuts through the marking thread 19 and the clamping jaws 22, 23 hold the region of the marking thread which originates from the marking thread carrier 18.
  • the other end of the marking thread 19 remains free and is acted upon in the knitwear 11 in the subsequent knitting process.
  • a second piece length counter 24 is provided, which is also connected to the machine control 16. As soon as the second piece length counter 24 determines that the knitted fabric 11 has reached a predetermined length, the machine control 16 actuates the separating device 20.
  • the yarn source comprises a plurality of supply rolls 5, which are arranged side by side, wherein each supply roll 5 is associated with at least one marking yarn carrier 18.
  • both piece length counters 17, 24 are at zero and are pre-set with the desired default values, i. the first piece length counter 17 with the desired length of the knitted fabric 11 and the second piece length counter 24 with the desired length of the marking area.
  • the two piece length counters 17, 24 start with the synchronous and mutually parallel piece length detection.
  • the second piece length counter 24 reaches the corresponding default value with its actual value, then, for example, an operating message "piece length 2 reached" is output, which can be achieved, for example, by setting a corresponding system flag.
  • a predetermined action in the knitting machine 1 is triggered. In the simplest case, the knitting machine 1 is stopped.
  • the knitting machine 1 If the knitting machine 1 has stopped, then an operator can remove the marking thread 19 and start the knitting machine 1 again. The knitting machine then produces the knitted fabric 11 with the desired total length until the first piece length counter 17 has also arrived at its default value. Both piece length counters 17, 24 are then reset, preferably by a single reset signal.
  • the marking thread 19 is again inserted into the associated laying needle 9 and the knitted fabric 11 can be produced as previously described.
  • the second piece length counter 24 is reset to zero by a reset signal and Production process started again.
  • the reset signal may be generated, for example, by operating a reset button or the like. However, it only resets the second piece length counter 24, not the first piece length counter 17.
  • the knitted fabric 11 continues to be produced until the second piece length counter 24 has again reached a default value.
  • This default value can be the same as for the marked area. It can also be a different value.
  • the different default values are stored in a memory 26 and retrieved as needed.
  • the knitting machine 1 stops the knitting machine 1 a second time, then a corresponding operation message is issued, so that the operator knows that they must reintroduce the marking thread 19 through the laying needle 9. Thereafter, the knitting machine 1 is started again. In this case, a start in overdrive is not possible. You must start the knitting machine 1 in crawl, so that the operator can monitor whether the marking thread 19 is properly acted upon in the knitted fabric 11. This cycle can be repeated.
  • the second piece length counter 24 may have a temporary stop counter 25. When the stop-count counter 25 determines that the desired number of changes between marked and unmarked areas is reached, then there is no further stopover.
  • the intermediate stop counter 25 can also be used to read the memory 26 in which the respective lengths of the marked and unmarked areas are stored.
  • the knitting machine 1 is not stopped, but the separator 20 severes the marking thread 19 and holds the end connected to the marking yarn carrier 18 end.
  • the knitting machine then stops only when the first piece length counter 17 has reached its default value, ie the knitting machine 1 has produced the complete length of the knitted fabric 11.
  • both the first piece length counter 17 and the second piece length counter 24 are reset, with a corresponding operating message can be output and the corresponding system flag is set.
  • the production cycle can start from the beginning.
  • the number of introduced marking threads 19 is arbitrary. They are provided by corresponding marking yarn carriers 18, for example gate coils, and their outlet is monitored via corresponding sensors (not shown).
  • the piece length counters 17, 24 are shown here as discrete components. But this is not absolutely necessary. It is possible to detect the length of the piece, that is to say the length of the knitted fabric 11, in different ways, for example via the number of rows of stitches which can be determined by the machine control 16. It is also possible to determine the length of the knitted fabric 11 produced via the take-off rolls 12, 13.
  • the cross-cutting device 15 is shown here practically at the output of the knitting machine 1. It may be expedient to approach the cross-cutting device 15 closer to the effective region 3.
EP06075860A 2006-04-11 2006-04-11 Machine à tricoter du type chaîne Expired - Fee Related EP1845182B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06075860A EP1845182B1 (fr) 2006-04-11 2006-04-11 Machine à tricoter du type chaîne
DE502006001828T DE502006001828D1 (de) 2006-04-11 2006-04-11 Wirkmaschine
ES06075860T ES2313540T3 (es) 2006-04-11 2006-04-11 Maquina de tricotar.
IL176593A IL176593A (en) 2006-04-11 2006-06-28 Knitting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06075860A EP1845182B1 (fr) 2006-04-11 2006-04-11 Machine à tricoter du type chaîne

Publications (2)

Publication Number Publication Date
EP1845182A1 true EP1845182A1 (fr) 2007-10-17
EP1845182B1 EP1845182B1 (fr) 2008-10-15

Family

ID=36593054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06075860A Expired - Fee Related EP1845182B1 (fr) 2006-04-11 2006-04-11 Machine à tricoter du type chaîne

Country Status (4)

Country Link
EP (1) EP1845182B1 (fr)
DE (1) DE502006001828D1 (fr)
ES (1) ES2313540T3 (fr)
IL (1) IL176593A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105603630A (zh) * 2015-12-21 2016-05-25 湖南鑫海网业有限公司 一种无结网经编机网片长度计数方法及控制装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781532A (en) * 1972-05-22 1973-12-25 North American Rockwell Warp letoff control system
US4285130A (en) * 1979-02-10 1981-08-25 Masson Scott Thrissel Engineering Limited Control devices for web-feeding machines
US4426856A (en) * 1981-03-20 1984-01-24 Karl Mayer Textilmaschinenfabrik Gmbh Measuring arrangement for determining a process variable of a winding arrangement
US4535949A (en) * 1983-06-13 1985-08-20 Asea Aktiebolag Length measuring during rolling up of thin material
EP0578353A1 (fr) * 1992-07-09 1994-01-12 Tama Plastic Industry Dispositif et procédé pour la production d'un filet en tricot coloré
US5314128A (en) * 1990-06-08 1994-05-24 Alexander Machinery, Inc. Cloth measuring apparatus and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781532A (en) * 1972-05-22 1973-12-25 North American Rockwell Warp letoff control system
US4285130A (en) * 1979-02-10 1981-08-25 Masson Scott Thrissel Engineering Limited Control devices for web-feeding machines
US4426856A (en) * 1981-03-20 1984-01-24 Karl Mayer Textilmaschinenfabrik Gmbh Measuring arrangement for determining a process variable of a winding arrangement
US4535949A (en) * 1983-06-13 1985-08-20 Asea Aktiebolag Length measuring during rolling up of thin material
US5314128A (en) * 1990-06-08 1994-05-24 Alexander Machinery, Inc. Cloth measuring apparatus and method
EP0578353A1 (fr) * 1992-07-09 1994-01-12 Tama Plastic Industry Dispositif et procédé pour la production d'un filet en tricot coloré

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105603630A (zh) * 2015-12-21 2016-05-25 湖南鑫海网业有限公司 一种无结网经编机网片长度计数方法及控制装置
CN105603630B (zh) * 2015-12-21 2017-06-20 湖南鑫海股份有限公司 一种无结网经编机网片长度计数方法及控制装置

Also Published As

Publication number Publication date
IL176593A0 (en) 2006-10-31
DE502006001828D1 (de) 2008-11-27
IL176593A (en) 2010-05-31
EP1845182B1 (fr) 2008-10-15
ES2313540T3 (es) 2009-03-01

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