Method for Doffing for a Spinning Machine and a Corresponding Doffer
a technology of doffing and spinning machines, applied in the field of doffing for spinning machines and corresponding doffers, can solve the problems of increasing the demand for space, affecting the speed of doffing, so as to facilitate the rapid placement of empty sleeves
Inactive Publication Date: 2018-08-23
MASCHINENFABRIK RIETER AG
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The invention provides a machine that is space-saving and easy to design. The machine uses a doffer that extends laterally, but the machine is not wider because of this. The bobbin gripper has a receptacle that can hold the bobbin, and the sleeve gripper has a receptacle that can hold the sleeve from above. The grippers can be cylindrical or conical. The angle between the grippers' axes is equal, which allows for easy placement of the empty sleeve. Overall, the invention simplifies the process of gripping and positioning the bobbin and sleeve during production.
Problems solved by technology
Because of the size of the doffer apparatus, this movement is usually time consuming, which causes spinning time to be lost.
But one disadvantage of this doffer apparatus is that, in the direction of the longitudinal axis of the spinning machine, the gripping devices with the rotating disks require more space than what is available between two spinning stations on many modern spinning machines.
Furthermore, the demand for space is increased in an unfortunate manner with this embodiment because the doffer tilts out at the side.
However, one disadvantage of this embodiment is the lower fastening of the sleeves / cops because this is a stability problem.
Method used
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[0021]Reference will now be made to embodiments of the invention, one or more examples of which are shown in the drawings. Each embodiment is provided by way of explanation of the invention, and not as a limitation of the invention. For example features illustrated or described as part of one embodiment can be combined with another embodiment to yield still another embodiment. It is intended that the present invention include these and other modifications and variations to the embodiments described herein.
[0022]FIG. 1 shows schematic diagrams of a first specific embodiment of views of certain phases in changing from full bobbins 7 to empty sleeves 5 on spindles 8 of a ring spinning machine according to the present method. The starting position for a changing operation according to the invention from bobbins 7 using the doffer apparatus 1 is illustrated schematically in FIG. 1a. The doffer apparatus 1 comprises a doffer beam 2 and a plurality of rotatable gripping devices 3 using two...
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Abstract
A method for removing full bobbins from spindles of a ring spinning machine and for setting down empty sleeves on the spindles using a doffer is disclosed. The doffer has a beam and a rotatable gripping device that is mounted on the beam and has a sleeve gripper and a bobbin gripper, wherein the doffer is arranged next to the ring spinning machine. The beam is raised vertically and the gripping device is extended from the beam over the full bobbin. The invention also relates to a doffer having the corresponding drives.
Description
FIELD OF THE INVENTION[0001]The present invention relates to a method for removing full bobbins from spindles on a spinning machine and setting down empty sleeves on the spindles using a doffer. The invention also relates to a doffer for a ring spinning machine having a plurality of spinning stations.BACKGROUND[0002]Doffer apparatuses for spinning machines are well-known. The doffer apparatus usually has a plurality of gripping devices so that a gripping device is assigned to each spinning station. In many cases, such a gripping device has a gripper, which first removes a full bobbin from a spindle and sets it down on a journal on a conveyor belt, for example. Then the gripper grips an empty sleeve for example from a journal on a conveyor belt, and places it on the spindle. Between the removal of the bobbin and the placement of the sleeve, a beam on the doffer apparatus on which the gripping devices are arranged must be moved from the spinning station to the conveyor belt and back a...
Claims
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IPC IPC(8): D01H9/10
CPCD01H9/10B65H67/04D01H9/04D01H9/02
InventorNAGELI, ROBERT
OwnerMASCHINENFABRIK RIETER AG