Method for controlling screwing spindle

A control method, piston technology, applied in the direction of bottle filling, packaging, screw caps, etc., can solve the problem of damage to the cap or the neck of the package

Inactive Publication Date: 2003-04-16
SERAC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A problem arises from the fact that when the cap starts to be screwed on, there is less friction between the cap and the neck so that the shaft turns with little resistance
This dynamic moment can damage the cap or the neck of the package and require the user of the package to use a tool to loosen the cap

Method used

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  • Method for controlling screwing spindle
  • Method for controlling screwing spindle
  • Method for controlling screwing spindle

Examples

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Embodiment Construction

[0019] Referring to the drawings, the screwdriver controlled by the method of the present invention is conventional in structure and operation, some of its components not shown in the figures. In the embodiment shown, the shaft comprises a vertical guide tube 1 housed in a shaft support 2 and slidable vertically in a bushing 3 fixed to a rotating platform 4 . The guide tube 1 rotatably receives a mandrel 5, the bottom end of which protrudes outside the guide tube 1, and has a jaw chuck device 6 on which the cover is placed. The top of mandrel 5 has a bevel gear 7, and this gear and reference figure 1 Cooperate with the drive components shown in the overall above.

[0020] The shaft support 2 is mounted so as to slide on a column 9 fixed to the rotating platform 4, the support has a wheel 8 designed to cooperate with a cam of a stationary structure for positioning the support 2 and in the vertical direction. Fits with its associated parts in the vertical direction.

[0021] ...

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PUM

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Abstract

The invention concerns a method for controlling a screwing spindle comprising a motor supplied with fluid and having a motor element (18) coupled with the spindle shaft (5) to drive it in rotation, the method comprising the step of supplying the screwing spindle in nominal pressure conditions and flow rate generating the required tightening torque, and a prior step during which the screwing spindle is supplied in conditions less than the nominal conditions in sufficient proportion for the screwing spindle to rotate at a speed generating kinetic energy producing a tightening torque less than the required tightening torque.

Description

technical field [0001] The present invention relates to a method of threading shaft control for screwing caps onto packages with threaded necks. Background technique [0002] As is well known, the screw-in shaft has a linear transmission mechanism with a piston connected to a spindle for rotation. One method commonly used to control such shafts involves subjecting the piston to a tightening differential pressure, thereby producing the required torque for tightening the cap on the neck of the package. A problem arises from the fact that when the cap is initially screwed on, there is less friction between the cap and the neck so that the shaft turns with little resistance. As a result, high rotational speeds are available to the spindle, which stores considerable kinetic energy due to its inertia. The kinetic energy stored in this way causes the cap to be tightened rapidly until it bottoms out, at which point the spindle is stopped abruptly. At a standstill, the stored kine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B67B3/20
CPCB67B3/2073
Inventor B·格鲁森G·奥尔伊夫
Owner SERAC GROUP
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