EP3751027B1 - Carding machine and method for operating a carding machine and for adjusting the carding gap of the carding machine - Google Patents

Description

The present invention relates to a method for operating a card and for setting a carding gap of the card, with a control, with a display and an input device on the card and with a drum with a clothing and at least one clothing element arranged opposite the drum, with between the clothing of the drum and the clothing element a carding gap with a carding gap width is formed and a corresponding card.

From the DE 100 55 025 A1 a spinning preparation system is known which comprises several spinning preparation machines, such as cards and draw frames, each with a machine-related operating and display device and at least one higher-level operating and display device. All operating and display devices are connected to one another via control and regulating devices through a network. A higher-level operating and display device is provided for all inputs and displays that do not require personal operation or display recording on a machine. Operating and display devices for necessary inputs and displays, which require personal operation or display acquisition on the machine for the operation of the respective machine, are arranged on the machine. The disadvantage here is that the operator does not get all the information he needs to set the machine displayed on the machine itself, but has to repeatedly refer to the central repository in the form of the operating instructions, for example in paper form or in electronic form in a higher-level operating and display device.

the EP 1 158 078 A2 discloses a method for operating a card and for setting a carding gap of the card, with a control, a display and an input device.

The object of the present invention is therefore to provide a method for operating a card and for setting a carding gap of the card and a corresponding card which provides all the information for setting the card on the machine itself and which facilitates the setting of the card.

The object is achieved with the features of the independent claims.

According to the invention, the method for operating a card and for setting a carding gap of the card has a control, a display and an input device on the card and a drum with a clothing and at least one clothing element arranged opposite the drum. A carding gap with a carding gap width is formed between the clothing of the drum and the clothing element. The method is characterized by the following method steps: input of a raw material intended for carding in the input device, input of a planned production quantity in the input device, calculation of a target carding gap width, output of the target carding gap width on the display device. On the basis of the values entered for the intended production quantity and the type of raw material that is to be carded, a target carding gap width is determined and used, in particular by the control system arranged on the machine or also by a central control system that is connected to the card the display device of the card issued. The definition can, for example, be calculated using an algorithm or taken from a table stored for the controller. The operator - or even the card itself, if it is equipped with the appropriate devices - is thus able to carry out adjustment work on the card. Using the display on the card, the operator or the card knows which values are to be achieved when the card is set. The operator receives instructions for checking or correct setting of the card without having to leave the card to query the corresponding values at a central point and without having to carry additional control elements, such as a computer, in order to monitor the card correctly or to be able to adjust.

A target drum speed and / or a target lid speed is also determined and output on the display device. The target drum speed and / or the target lid speed is determined by the control based on the intended raw material and / or the intended production quantity. This determination can be made either with the aid of an algorithm or a predefined table. In the table, for example, as with the definition of the nominal carding gap width, it can be stored in the factory or based on empirical values in the textile factory which drum speed and / or which flats speed or which target carding gap width, based on the raw material or the production volume, appears to be most suitable.

It also has advantages if a target point in time for equalizing and / or grinding the clothing of the drum and / or the clothing element is output, in particular as a function of the production quantity. The clothing of the drum and the clothing element are subject to wear in the course of production. This wear can occur unevenly. In addition, he can increase the carding gap width impermissibly. In addition, the clothing becomes blunt in the course of production and therefore has to be reworked. On the basis of the intended or actual production quantity and / or the processed raw material, the point in time can be determined in advance when leveling and / or grinding of the clothing will be necessary. This can in turn be determined either by means of an algorithm or a predefined, stored table, preferably by the controller. Based on this set point in time, the operator knows when leveling and / or grinding of the clothing will be necessary and can accordingly plan his work better.

Furthermore, it is advantageous if the control, in particular a machine control arranged on the machine, carries out the calculation of the nominal carding gap width. The nominal carding gap width is used to achieve an optimal carding result, preferably as a function of the raw material and / or the production quantity. In addition, the nominal carding gap width ensures that the clothing will not be destroyed if the gap width were too small and the opposing clothing often or too strongly contact one another.

There are also advantages if the control, in particular a machine control arranged on the machine, outputs the target carding gap width, the target drum speed, the target cover speed on the display device and / or the target time for equalizing and / or grinding is initiated. The output of these values on the machine can preferably be based on a display. However, it is also possible to display the corresponding values using simple light signals. The operator is supported in setting up and checking the machine properly.

Furthermore, it is advantageous if an actual carding gap width, an actual drum speed, an actual flap speed and / or a period of time up to or since the set point in time for equalization and / or grinding is output on the display device. This has the advantage that it is possible for the operator to have the actual values displayed in addition to the target values. This makes setting and checking the machine much easier for the operator.

It is particularly advantageous if the target values and the actual values of the carding gap width, the drum speed, the flat speed and / or the time for equalizing and / or grinding are output in relation to one another on the display device. By comparing the target values with the actual values, which is preferably shown graphically on the display device, it is very easy for the operator to make adjustments and to see whether the actual setting, for example the carding gap, is acceptable with regard to carding quality or of the risk of damage. At most it can be provided that the operator confirms that the necessary adjustment work or equalization and / or grinding is or has been carried out.

It is advantageous if the controller initiates an automatic adjustment of the carding gap width and / or the automatic equalization and / or grinding of the clothing of the drum and / or of the clothing element. If the card is equipped with appropriate devices, it is advantageous if the control system independently initiates the automatic adjustment of the carding gap width and / or the automatic equalization and / or grinding of the clothing. In this case, the operator no longer has to intervene himself. At most it can be provided that the operator confirms that the automatic output of the necessary processing is being carried out.

It is also advantageous that the control system suppresses a production operation of the card if at least one of the actual values deviates from its target value by a predetermined maximum value. Individual, slow movements of the components, in particular in order to be able to carry out adjustment work, should still be possible as a rule. The advantage of stopping production is that it prevents the machine from producing poor quality fiber material or even from being damaged. Only when the actual values are again in a range that can be tolerated is it possible to start up the card again. A blocking of the operation in the case of critical input values must advantageously be provided. When equipped with appropriate sensors, automatic return of values that have moved out of the target range is also conceivable.

A card according to the invention has a drum with a clothing and at least one clothing element arranged opposite the drum, in particular a feed roller, a doffing roller and / or a flat rod. A carding gap with a carding gap width is formed between the clothing of the drum and the clothing element. The card is operated with a controller and has a display and input device arranged on the card. According to the invention, the control, the display device and the input device are designed in such a way that at least one of the preceding method steps can be carried out.

It is advantageous if the card is assigned an adjustment device for manual or automatic adjustment of the carding gap width. In this way, for example, the position of the clothing elements in relation to the drum, or vice versa, can be changed. The adjustment preferably takes place essentially in the radial direction of the drum, so that the carding gap width is changed uniformly.

It is also advantageous if the card is assigned a clothing grinding device. The clothing grinding device is able to grind the clothing of the drum and / or the clothing elements and thus on the one hand to equalize the carding gap width and on the other hand to sharpen the clothing teeth again.

Figur 1

eine schematische Darstellung einer Karde,

Figur 2

eine Anzeige- und Eingabevorrichtung für die Eingabe von Basiswerten,

Figur 3

die Anzeige- und Eingabevorrichtung für die Eingabe von Kardierspaltweiten und

Figur 4

die Anzeige- und Eingabevorrichtung mit einer weiteren Anzeige.

Further advantages of the invention are described in the following exemplary embodiments. It shows:

Figure 1

a schematic representation of a card,

Figure 2

a display and input device for entering basic values,

Figure 3

the display and input device for the input of carding gap widths and

Figure 4

the display and input device with a further display.

In the following description of the exemplary embodiments shown, the same reference symbols are used for features that are identical and / or at least comparable in their design and / or mode of operation, even if they are shown in different exemplary embodiments. Unless these are explained again in detail, their design and / or mode of action corresponds to the design and mode of action of the features already described above.

In Figure 1 a card 1 is shown schematically. The card 1 has a drum 2, on the circumference of which clothing elements, here a feed roller 3, flat rods 4 and a doffer roller 5 are arranged. The drum 2, the feed roller 3 and the doffer roller 5 have a clothing on their circumference. Likewise, sets are attached to the flat bars 4 on the side facing the drum 2. A carding gap 6 is provided between the clothing elements, which in this illustration is only shown between the flat bars 4 and the drum 2. The width of the carding gap 6 is referred to as the carding gap width W.

The card 1 is assigned a controller 7 which monitors and controls the operation of the card 1. The controller 7 is connected to a display device 8 and an input device 9. Setpoint and actual values of the machine data can be displayed on the display device 8. The input device 9 is used by an operator Input of the desired machine data. The display device 8 and the input device 9 can also be integrated in one device, for example with a touchscreen.

Is sketched in Figure 1 a clothing grinding device 10 is also shown. The clothing grinding device 10 is used to level and grind the clothing. Both the drum 2 and the feed roller 3, the flat bars 4 or the doffing roller 5 can be delivered.

The spacing between the clothing elements and / or the drum 2 can be changed. For this purpose, the components to be adjusted have an adjustment device 11, as indicated by double arrows. The distance between the feed roller 3, flat bars 4 and / or the doffing roller 5 and the drum 2 can be changed by the adjusting device 11.

In Figure 2 a display and input device 8, 9 is shown for the input of basic values. It shows what types of raw material are available for selection. In this example, the operator can choose between cotton, polyester or any other raw material. The "X" in an upper input field 12 marks that the raw material to be carded is cotton. In addition, according to this representation, the operator has the option of entering the desired production quantity. Here it was selected in the corresponding input field 12 that the production quantity should be 60 kg / h. The drum speed and the lid speed were not selected. This is calculated by the controller 7 or selected from a corresponding table based on the input that cotton is to be carded at a production rate of 60 kg / h. When the entries have been made, the operator can end the entry by pressing a confirmation key 13.

In Figure 3 the display and input device 8, 9 for the input of carding gap widths W is shown. In this exemplary embodiment, the carding gap widths W are measured at three points C1, C2 and C3. For each of these measuring points C1, C2 and C3, the controller 7 proposes a setpoint value. So the target value is on at point C1 0.275 mm, at point C2 0.200 mm and at point C3 0.175 mm. Since the drum 2 and the flat bars 4 of the card 1 are relatively wide, measurements are taken at points C1, C2 and C3 both on the left and on the right.

In this exemplary embodiment, actual values have resulted which are 0.300 mm at point C1, 0.175 mm at point C2 and 0.175 mm at point C3. In order to make a deviation of the actual values from the target values visually detectable, the values are shown graphically in relation to one another. The more the actual value deviates from the target value, the further away it is from a middle position. If at least one of the actual values deviates from its target value by a predetermined maximum value, it can be provided that the control system suppresses the production operation of the card.

At point C1 it can be seen that the actual values are higher than the target values. Accordingly, a bar for the actual value 14 is arranged in an upper tolerance field 15 in the graphic. The upper tolerance field 15 means that the carding gap width W is too large. This can have a negative impact on the quality of the carding.

At the point C2, however, the carding gap width W is too small. Accordingly, the bar representing the actual value 14 is shown in a lower tolerance field 16. This means that there is a risk that the clothing of the flat bars 4 and the drum 2 are too close to one another and this can lead to a collision which could damage the card 1.

At point C3, on the other hand, the actual values 14 are identical to the setpoint value, which is why the bar representing the actual value 14 is shown between the two tolerance fields 15 and 16.

In Figure 4 Finally, another representation can be seen on the display and input device 8, 9. It can be seen from this that the raw material cotton is carded. In addition, the target values for the production quantity are the drum speed and the top speed equal to the actual values 14. The bar for the actual values 14 is accordingly shown between an upper tolerance zone 15 and a lower tolerance zone 16. A deviation of the actual values 14 from the setpoint values can be quickly recognized by the graphic.

In the representation of the Figure 4 it can also be seen that a display for the next grinding time is displayed. The actual value 14 is again shown as a bar. In the course of time it moves from left to right, which shows how much time is left until the next sanding or when the time until the next sanding of the sets will have expired. The operator can use this display to see whether he will soon have to grind the card 1 or whether it may take a long time before this is the case. The grinding or equalization can be initiated and / or carried out independently by the controller 7 after the end of this grinding period has been reached. It is of course also possible for this work to be carried out by the operating personnel.

It goes without saying that the invention is not restricted to the graph of the setpoint and actual values shown. Other graphical representations are easily possible. It is essential that, with just a few details, the controller 7 is able to set the card 1 and determine a status of the card 1 from which it can be seen whether the target values determined by the controller 7 are replaced by the corresponding actual values. Values are adhered to. The card 1 is thus able to make settings largely automatically without the operator losing control of the card 1.

The present invention is not restricted to the illustrated and described exemplary embodiment. Modifications and combinations of features within the scope of the claims are possible.

Legend

1

Card

2

drum

3

Feed roller

4th

Flat bars

5

Doffing roller

6th

Carding gap

7th

steering

8th

Display device

9

Input device

10

Clothing grinding device

11th

Adjusting device

12th

input box

13th

Confirmation button

14th

Actual value

15th

Upper tolerance field

16

Lower tolerance field

W.

Carding gap width

C1, C2 and C3

Measuring points

Claims (11)

1. Method for operating a card (1) and for setting a carding gap (6) of the card (1),

   having a control means (7),

   having a display and input device (8, 9) on the card (1) and

   having a drum (2) that has clothing and

   at least one clothing element arranged opposite the drum (2), a carding gap (6) that has a carding gap width (W) being formed between the clothing of the drum (2) and the clothing element, comprising the following method steps:

   - inputting a raw material provided for carding in the input device (9),

   - inputting a provided production volume in the input device (9),

   - establishing a target carding gap width,

   characterized by the following method steps:

   - outputting the target carding gap width on the display device (8)

   - detecting a target drum speed and/or a target flat speed and outputting on the display device (8).
2. Method according to claim 1, characterized in that a target time for leveling and/or grinding the clothing of the drum (2) and/or the clothing element, in particular depending on the production volume, is output.
3. Method according to any of the preceding claims, characterized in that the target carding gap width is calculated by the control means (7), in particular a machine control means arranged on the card (1).
4. Method according to any of the preceding claims, characterized in that the control means (7), in particular a machine control means arranged on the card (1), outputs the target carding gap width, the target drum speed, the target flat speed on the display device (8) and/or the target time for equalizing and/or grinding.
5. Method according to any of the preceding claims, characterized in that an actual carding gap width, an actual drum speed, an actual flat speed and/or a period until or since the target time for leveling and/or grinding is output on the display device (8).
6. Method according to any of the preceding claims, characterized in that the target values and the actual values (14) of the carding gap width (W), the drum speed, the flat speed and/or the time for leveling and/or grinding are output on the display device (8) in relation to one another.
7. Method according to any of the preceding claims, characterized in that the control means (7) automatically adjusts the carding gap width (W) and/or automatically levels and/or grinds the clothing of the drum (2) and/or the clothing element.
8. Method according to any of the preceding claims, characterized in that production operation of the card (1) is prevented by the control means (7) when at least one of the actual values deviates from its target value by a predetermined maximum value.
9. Card

   - having a drum (2) that has clothing and

   - having at least one clothing element arranged opposite the drum (2), in particular a feed roller (3), a doffer roller (5) and/or a flat bar (4),

   - a carding gap (6) having a carding gap width (W) being formed between the clothing of the drum (2) and the clothing element,

   - having a control means (7) and

   - having a display and input device (8, 9) arranged on the card (1),
   characterized in that the control means (7), the display and input device (8, 9) are designed to carry out the method steps of at least one of the preceding claims.
10. Card according to claim 9, characterized in that an adjusting means (11) for manually or automatically adjusting the carding gap width (W) is associated with the card (1).
11. Card according to claim 9 or 10, characterized in that a clothing grinding device (10) is associated with the card (1).

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