EP1926847A1 - Verfahren für eine schleifvorrichtung - Google Patents
Verfahren für eine schleifvorrichtungInfo
- Publication number
- EP1926847A1 EP1926847A1 EP06775200A EP06775200A EP1926847A1 EP 1926847 A1 EP1926847 A1 EP 1926847A1 EP 06775200 A EP06775200 A EP 06775200A EP 06775200 A EP06775200 A EP 06775200A EP 1926847 A1 EP1926847 A1 EP 1926847A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- cycle
- grinding
- card
- maintenance
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/02—Carding machines
- D01G15/12—Details
- D01G15/36—Driving or speed control arrangements
- D01G15/38—Driving or speed control arrangements for use during the grinding of card clothing
Definitions
- the invention relates to a control method for carrying out maintenance work on a card, in particular for the grinding of rolling stands and / or measuring the carding gap.
- the invention is in the technical field of carding.
- a carding machine has as its main task to dissolve the cotton to the individual fiber, whereby the nits should be removed.
- For carding the cotton are u. a. closer clothing and sharper sets a condition.
- a wear of the covers of the lid and the roller takes place.
- various maintenance devices and methods have been developed, some of which are also suitable for use during production. Examples of such maintenance devices are:
- DE 42 35 610 A1 discloses an inductive sensor associated with the cover of a carding machine and facing the roller assembly.
- DE 102 51 574 A1 an optical sensor is described, which is able to detect the distance between the free ends of the trimmings, as well as corresponding reference surfaces.
- DE 39 13 996 A1 also discloses non-contact sensors, capacitive, inductive and optical sensors being mentioned here.
- EP 565486 discloses a control of how a grinding cycle could proceed. This process takes place each time after a predetermined amount of material has been processed by the card. Regardless of the state of the card, a grinding cycle is initiated and carried out. Only the drum speed, which is necessary to ensure a satisfactory grinding result, the initiation by the controller is required. In practice, therefore, even when the card is processing the maximum amount of material is being ground. With today's card generation, this can mean a production of more than 200 kg per hour.
- the latest generation of high-performance cards for example the C60 card from Rieter, no longer has a drum with a working width of 1 m, but a working width of 1.5 m.
- the diameter of the drum is reduced from the usual 1.3 m to around 0.84 m.
- a card with a reduced commute urchmes- This is preferably driven at a relatively high speed to achieve a higher peripheral speed. Due to the changed geometry and production parameters, the card can process more than 200 kg / h of cotton today. However, the higher production that is desired today, in particular coupled with a changed geometry of the drum, also has an effect on the functionality of the maintenance processes, such as measuring or grinding.
- the present invention is therefore based on the object to provide a control method, which determines the optimal time for performing a due measuring or grinding process.
- An interruption of the material flow can arise in particular: - by an interruption in the delivery of materials, for example, when cleaning machines have a problem;
- Material interruptions can be measured at the exit of the card, among other things. For example, by means of a speed measurement of the produced card sliver, an interruption on the card can be detected. The speed goes to 0. By means of a light sensor, a band break can be detected directly, u. a. at the transition from the card to a subsequent machine, such as a tape tray or a track. Also control signals from the blowroom or from subsequent machines can be used to detect a material interruption.
- the control of the card will react with the shutdown of the pickup roller and / or the feed roller.
- the rollers can be turned off individually, in parallel or one after another, depending on the cause of the interruption.
- the remaining card elements such as the drum, licker-in, cover or suction elements, will be without interruption. or change continues to work. This briefly frees the elements of most of the material. Exactly this material gap during operation is the optimal time according to the invention for carrying out the maintenance process.
- the control of the maintenance devices requires several control steps. Basically, it needs a control of the maintenance process itself in a maintenance cycle, for example, a grinding or measuring cycle. An example of such a grinding cycle is disclosed in EP 565486. In addition, it needs a controller that decides when a maintenance cycle is due again. For example, after x kg of production, after x hours of operation or when a measured value, for example that of a Nissen sensor, reaches a specified threshold. These control conditions can be accommodated in the maintenance devices own control units or in sub-controls or integrated in the card control or in a higher-level control system.
- This control works like a traffic light, it does not decide whether actually a maintenance procedure is carried out, but only when a maintenance procedure can be carried out. He can, but does not need to know, whether a maintenance process is actually due, but merely indicates whether the status of the card has an optimal window of time.
- the controller can approve a due maintenance procedure such as a grinding and / or measuring cycle; the control of the respective maintenance procedure is then responsible for the actual initiation and / or execution. This can be initiated directly by the same control unit in the relevant device o- be passed on to an under control for the device in question.
- a due maintenance procedure such as a grinding and / or measuring cycle
- FIG. 1 Schematic drawing of a card
- FIG. 1 shows a revolving flat card, for example the Rieter card C60 with a working width of 1.5 meters.
- Fiber flakes are transported through transport channels (not shown) through the various cleaning process steps and finally fed to the cleaner shaft (6) of the card.
- a normal hopper can be provided instead of a cleaner shaft. This then passes the fiber flakes to the card as cotton wool.
- the feeder feeds the fiber flakes to the lickerin (3).
- the lickerins open the fiber flakes and remove some of the dirt particles.
- the last licker-in roller transfers the fibers to the card drum (1).
- the carding drum cooperates with the covers (2) and parallelises the fibers even further.
- the covers are cleaned by a cover cleaning (7) and possibly Reground by means of a grinding device (8).
- the fibers After the fibers have partially performed several rounds on the card drum, they are removed from the doffer roller (4) from the card drum, fed to the removal area (5) and finally deposited as a card sliver in a can stick in a jug (not shown).
- a sensor between the nip rolls can measure the strip thickness, but also detect a band break.
- a permanent built-in maintenance device for example a grinding (8) and / or measuring device (9), is a prerequisite. In principle, this grinding device must be able to manage after commissioning without additional manual settings.
- this grinding device must be able to manage after commissioning without additional manual settings.
- there are alternative grinding devices (disclosed, inter alia, in EP 790 099, EP 1 068 927 and EP 1 430 997) which have a similar construction and / or a similar principle. These can also be permanently installed in a card with just a few adjustments, and can then also be used for the inventive control method.
- the control method according to the invention is also suitable for other measuring or grinding methods. Other intermittent methods on the card, which disadvantage the carding process or which are disadvantaged by the carding process with high material volumes, can be controlled according to the inventive control method.
- An example of a controller according to the invention may be as follows.
- the grinding device (8) has its own control (not shown) that can initiate and execute a grinding cycle.
- An example of such a grinding cycle is described in EP 565486.
- In this control itself is determined when a grinding cycle is due and which basic conditions for the grinding are necessary, for example, the minimum speed of the drum, otherwise the set is ground unevenly or too sharply.
- an additional signal is necessary, namely a release / approval for a suitable interruption. As soon as the interruption has ended and / or the material flow is maximum again, the release is set again. A cycle, which is due later, then has to wait again until a next interruption takes place.
- the controller-parent or custom-can allow actual initiation.
- a due cycle can be performed, but also a cycle that is due in a release window can be performed directly. Whether a cycle is due depends on the control of the device concerned. For example, it can be regulated according to actual production or working time of the card or according to additional factors, for example grinding after x times, the carding gap is measured and a possible correction is initiated.
- the higher-level control system detects the presence of a material interruption, for example, this signal comes from a sensor (11) at the output of the card.
- the main control first switches off the intake and / or feed roller
- Additional maintenance procedures for example a measurement procedure (9), may be granted in parallel.
- a measuring cycle for the carding gap becomes due after the 5th grinding cycle has been completed. If the interruption is canceled before initiation, the measurement cycle remains due until the next interruption. But it can also happen that the interruption is canceled before a measuring or grinding cycle is finished. Then, depending on the type of cycle in progress, production control may be halted until the cycle is complete or directly reconnected. Preferably, no more than one due cycle per maintenance device is halted until the next interruption. If it happens that a cycle is due a second time within a break interval, then there are several possibilities for the control: a cycle is carried out regardless of the state of the card or it is nevertheless waited for an interruption. In particular, measurement methods that serve general monitoring can probably wait until the optimal measuring conditions are met.
- An alternative solution is a counter for the due cycles, whereby a maximum number of due cycles can be determined depending on the production condition and the type of maintenance that is present. For example, the measuring of the carding gap should take place after every 8 hours of operation, but at the latest after 48 hours. The counter can then display a maximum of 5, if the 6 cycle is still due, is no longer waiting for an interruption, but directly initiated the cycle. Of course, after each initiated and actually performed cycle, the counter is reset to zero.
- any subsequent cycle may also be advantageous to make the calculation of any subsequent cycle dependent on the actual execution of the due pending cycle. For example, one grinding cycle is due every 50th hour of operation. The actual execution of a cycle, however, takes place after 75 hours. Performing the following cycle after just 25 hours would make no sense and the control will be adjusted accordingly.
- the control of the maintenance devices is preferably integrated in the control of the card. However, it may happen that retrofit of the card with a support device this is not directly possible. Then, a maintenance device can be operated with an autonomous control according to the inventive control. For this, the controller must be able to detect a material interruption itself, for example, the controller can measure the speed of the take-off roll and / feed roll by means of a sensor and thus detect an interruption.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH15452005 | 2005-09-22 | ||
| PCT/CH2006/000507 WO2007033511A1 (de) | 2005-09-22 | 2006-09-19 | Verfahren für eine schleifvorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1926847A1 true EP1926847A1 (de) | 2008-06-04 |
| EP1926847B1 EP1926847B1 (de) | 2009-11-04 |
Family
ID=37395959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06775200A Active EP1926847B1 (de) | 2005-09-22 | 2006-09-19 | Verfahren für eine schleifvorrichtung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1926847B1 (de) |
| CN (1) | CN101268220B (de) |
| DE (1) | DE502006005303D1 (de) |
| WO (1) | WO2007033511A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0565486B2 (de) * | 1992-04-07 | 2011-07-13 | Maschinenfabrik Rieter Ag | Gesteuertes Garniturschleifen |
| DE59710155D1 (de) * | 1996-04-12 | 2003-07-03 | Rieter Ag Maschf | Sensor für den Kardierspalt bzw. Nachstellen des Kardierspaltes |
| CH693095A5 (de) * | 1997-12-13 | 2003-02-28 | Truetzschler Gmbh & Co Kg | Vorrichtung an einer Karde zum Schärfen der Garnitur der Trommel. |
| DE19908708A1 (de) * | 1998-09-09 | 2000-03-16 | Rieter Ag Maschf | Schärf- bzw. Schleifeinrichtung und Zustelleinrichtung |
| DE10251574A1 (de) * | 2002-11-06 | 2004-05-19 | Trützschler GmbH & Co KG | Vorrichtung an einer Spinnerei Vorbereitungsmaschine, z.B. Karde, Reiniger o. dgl., zur Messung von Abständen an Deckelgarnituren |
| DE102004060663A1 (de) * | 2004-12-15 | 2006-07-06 | Trützschler GmbH & Co KG | Vorrichtung an einer Spinnereimaschine, insbesondere Karde, Krempel, Reiniger o. dgl., zum Bearbeiten, insbesondere Schleifen und/oder Schärfen einer Faserverarbeitungsgarnitur |
-
2006
- 2006-09-19 CN CN2006800345439A patent/CN101268220B/zh active Active
- 2006-09-19 WO PCT/CH2006/000507 patent/WO2007033511A1/de not_active Ceased
- 2006-09-19 EP EP06775200A patent/EP1926847B1/de active Active
- 2006-09-19 DE DE502006005303T patent/DE502006005303D1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007033511A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007033511A1 (de) | 2007-03-29 |
| EP1926847B1 (de) | 2009-11-04 |
| CN101268220B (zh) | 2011-02-09 |
| DE502006005303D1 (de) | 2009-12-17 |
| CN101268220A (zh) | 2008-09-17 |
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