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Fastening device for doffer holders

A doffer and clamper technology, which is applied in transportation and packaging, textiles and papermaking, thin material processing, etc., can solve the problem of high manufacturing cost of the doffer clamper, achieve cost reduction and ensure the clamping effect Effect

Active Publication Date: 2019-05-17
MASCHINENFABRIK RIETER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A significant disadvantage of the doffer gripper described here is that it is relatively expensive to manufacture due to its design

Method used

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  • Fastening device for doffer holders
  • Fastening device for doffer holders
  • Fastening device for doffer holders

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] figure 1 A doffer gripper 1 belonging to the prior art is shown. The doffer holder 1 is made of plastic and has a cylindrical recess 2 for a bobbin or bobbin sleeve (not shown). A pneumatically adjustable clamping element 3 is arranged in the cylindrical socket 2 .

[0021] With the clamping element 3 the end region can be clamped from the outside of the bobbin or bobbin sleeve which is inserted into the interior of the doffer clamp 1 . In order to fasten the doffer clamp 1 to the doffer bar 4 extending in the longitudinal direction of the machine ( Figure 4 ), the doffer gripper 1 comprises a fastening element 5 having two elastic retaining strips 6a, 6b arranged at a distance from each other. The elastic retaining strips 6a, 6b are connected to the fastening element 5 at a first end 27a, 27b. Furthermore, the fastening element 5 comprises a rigid support element 7 between the elastic retaining strips 6a, 6b, an air channel 8 for the air supply of the pneumaticall...

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PUM

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Abstract

The invention relates to a doffer gripper (1) for fastening to a doffer bar (4), having a fastening element (5) which comprises two elastic holding lugs (6a, 6b) which are arranged at a spacing from one another and a rigid supporting element (7) which is arranged between the elastic holding lugs (6a, 6b), wherein the two elastic holding lugs (6a, 6b) are connected with a first end (27a, 27b) to the fastening element (5) and are positioned with a second free end (13a, 13b) in a rest position in each case via at least one spring element (18a, 18b). In order to simplify the construction of the doffer gripper (1), the at least one spring element (18a, 18b) is configured in one piece with the free end (13a, 13b) of the respective elastic holding lug (6a, 6b) and the rigid supporting element (7).

Description

technical field [0001] The invention relates to a doffer gripper (Doffergreifer) for fastening on a doffer bar (Dofferbalken), which has a fastening element comprising Two elastic retaining straps and a rigid support element arranged between the elastic retaining straps, wherein the two elastic retaining straps are connected to the fastening element at a first end and positioned in a rest position at a second end on at least one spring element. Background technique [0002] With all spinning machines, especially ring spinning machines, a large number of sleeves and / or bobbins that have been fully wound are removed from the spinnerets of the spinning machine in a bobbin changing operation and replaced with empty bobbins sleeve to replace. Thus, the spinning machine has a doffer arrangement with a doffer bar, for example, which is movably arranged on the spinning machine so that it can be moved by means of a shearing mechanism. A plurality of doffer grippers are in turn arr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01H9/04
CPCD01H9/003B65H67/068B65H2701/31
Inventor R.内格里
Owner MASCHINENFABRIK RIETER AG