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AssigneeRieter Ingolstadt Spinnereimaschinenbau AG
InventorsMichael Strobel, Helmut Mattis, Chokri Cherif, Peter Schulz
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A device with a drafting device (3) for drafting at least one sliver (FB) supplied to the drafting device (3) comprises a sliver depositing apparatus (4) downstream from the drafting device (3) for depositing the drafted sliver (FB′) into a can (6). Furthermore, the device comprises a can replacement device (15) for replacing a filled can (6′) by a can (6) to be filled. Means (17) is provided on the device for lowering the temperature (T) and/or the relative moisture (LF) of the fibrous material (FB, FB′) before or after it is deposited in the can (6). Furthermore, means (17) for raising the temperature TU of the machine parts (13, 20) that make contact with the uppermost sliver layers (BL) in the filled can (6′) can be provided, with which means (17) a condensation of water on the cited machine parts (13, 20) is at least reduced. A combination of a card (1) with a drafting device (3) comprises a sliver depositing apparatus (4), downstream from the drafting device (3), for depositing the drafted sliver (FB′) into a can (6) as well as comprises a can replacement device (15). During the replacement of a filled can (6′) by a can (6) to be filled the filled can (6′) is pushed from the filling position (18) to an adjacent ejection position (19). No machine part (13, 20) covering and touching the uppermost sliver layers (BL) is provided in the ejection position (19) in order to avoid a condensation of water.
A device with a drafting device (3) for drafting at least one sliver (FB) supplied to the drafting device (3), with a sliver depositing apparatus (4) downstream from the drafting device (3) for depositing the resulting, drafted sliver (FB′) into a can (6) as well as with a can replacement device (15) for replacing a filled can (6′) with a can to be filled (6), which filled can (6′) is pushed from the filling position (18) to an ejection position (19), characterized by means (17) for lowering the temperature (T) and/or the relative moisture (LF) of the fibrous material (FB, FB′) before or after it is deposited in the can (6) and/or by means (17) for raising the temperature (TU) of the machine parts (13, 20) that make contact with the uppermost sliver layers (BL) in the filled can (6′) in the ejection position (19), with which a condensation of water on the cited machine parts (13, 20) is at least reduced.
The device according to the previous claim, characterized in that a sliver-producing apparatus, in particular a card (1), is connected in front of the drafting device (3) which apparatus directly supplies an individual sliver (FB) to the drafting device (3) without an intermediate depositing.
The device according to one of the previous claims, characterized in that it is designed as a draw frame (2) and that the sliver-producing apparatus is a card (1) connected in front.
The device according to one of the previous claims, characterized in that it comprises the drafting device (3) and the sliver-producing apparatus, in particular a card (1).
The device according to one of the previous claims, characterized in that the means (17) for lowering the temperature (T) and/or the relative moisture (LF) of the fibrous material (FB, FB′) is arranged after the drafting device (3).
The device according to one of the previous claims, characterized in that the means (17) for raising the temperature of these machine parts (13, 20) comprises at least one heating apparatus (21) by means of which the temperature (TU) of the machine parts (13, 20) can be raised in such a manner that the state point (Z2) of the air in the state diagram for moist air (Mollier diagram) is raised above the dew-point curve (TL).
The device according to one of the previous claims, characterized in that the heating apparatus (21) comprises at least one heating foil (22).
The device according to one of the previous claims, characterized in that the temperature of these machine parts (13, 20) can be controlled or regulated by the heating apparatus (21).
The device according to one of the previous claims, characterized in that the heating device (21) is arranged between a plate (13) of the carrier frame (23) and said machine part (20), that is designed in an areal manner and makes contact with the uppermost layers (BL) of the sliver (FB′).
The device according to one of the previous claims, characterized in that the machine part (20) is designed as a sliding sheet, e.g. in the form of a noble-steel plate or a ceramic plate, as a coating or as some other covering of the carrier frame plate (13).
The device according to one of the previous claims, characterized in that at least one passage opening communicating with the ambient air is provided in the machine part (13, 20).
The device according to one of the previous claims, characterized in that at least one passage opening is provided in the machine part (13, 20) which opening is connected to an apparatus (25) for supplying room air or conditioned air, e.g., from an air conditioning unit, into the interior of the can.
The device according to one of the previous claims, characterized in that the cooling apparatus (27) cooperates with a structural component that makes contact with the fibrous material (FB, FB′) during operation of the device.
The device according to one of the previous claims, characterized in that the cooling apparatus (27) is arranged on a sliver forming unit (5) connected in after the drafting device (3) in which the drafted fibrous material is combined to a sliver (FB′).
The device according to one of the previous claims, characterized in that the cooling apparatus (27) is designed for supplying a gas or gaseous mixture that is cooler than the ambient temperature (TU) through bores (29a, 29b) or slits of the sliver forming unit (5) into its inner space (30) through which the fibrous material (FB′) passes.
The device according to one of the previous claims, characterized in that the cooling apparatus (27) is arranged between the sliver-producing apparatus, in particular a card (1), and the drafting device (3).
The device according to one of the previous claims, characterized in that the cooling apparatus (27) comprises one or more Peltier elements.
A machine part (20), especially a carrier frame plate (13), of a device with a drafting device (3), a sliver depositing apparatus (4) for depositing a sliver (FB′) drafted in the drafting device (3) into a can (6) as well as with a can replacement device (15) for replacing a filled can (6′) with a can to be filled (6), which filled can (6′) is pushed from the filling position (18) to an ejection position (19), which machine part (13, 20) makes contact with the uppermost sliver layers (BL) of the filled can (6′) in the ejection position (19), characterized in that means (17) for raising the temperature (TU) of the machine part (13, 20) is provided with which a condensation of water on the machine part (13, 20) is at least reduced.
The machine part (13, 20) according to the previous claim, characterized in that a heating apparatus (21) is arranged on the machine part (13, 20) as means (17) for raising the temperature TU of the machine part (13, 20).
The machine part (13, 20) according to the previous claim, characterized in that the heating apparatus (21) comprises a heating foil (22).
A machine part (20), in particular a carrier frame plate (13), of a device with a drafting device (3), a sliver depositing apparatus (4) for depositing a sliver (FB′) drafted in the drafting device (3) into a can (6) as well as with a can replacement device (15) for replacing a filled can (6′) with a can to be filled (6), which filled can (6′) is pushed from the filling position (18) to an ejection position (19), which machine part (13, 20) makes contact with the uppermost sliver layers (BL) of the filled can (6′) in the ejection position (19), characterized in that at least one passage opening is arranged in the machine part (13, 20) in order to lower the temperature (T) and/or the relative moisture (LF) of the sliver (FB′) and to prevent the condensation of water on the machine part (13, 26).
The machine part (20) according to the previous claim, characterized in that the passage opening communicates with the ambient air.
A combination of a card (1) with a drafting device (3) for drafting at least one sliver (FB) supplied to the drafting device (3) directly from the card (1), with a sliver depositing apparatus (4) downstream from the drafting device (3) for depositing the resulting, drafted sliver (FB′) into a can (6) as well as with a can replacement device (15) for replacing a filled can (6′) with a can to be filled (6), which filled can (6′) is pushed from the filling position (18) to an adjacent ejection position (19), characterized in that no machine part (13, 20) covering and touching the uppermost sliver layers (BL) is provided in the ejection position.
Dependencies are inferred from the claim text.