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Process for mfg. screws and device for actuating process

A helix and helix technology, which is applied in the manufacturing field of screw conveyors, can solve the problems of discontinuous change in pitch, inconvenient production of helix with gradually changing pitch, etc., and achieve the effect of reducing manufacturing time

Inactive Publication Date: 2003-05-07
WAM SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a complex method which does not facilitate the production of helices with gradually varying pitches, but only with discontinuously varying pitches

Method used

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  • Process for mfg. screws and device for actuating process
  • Process for mfg. screws and device for actuating process
  • Process for mfg. screws and device for actuating process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] With reference to the above-mentioned figures, 1 generally indicates a device for manufacturing a screw 2, for example used as a screw conveyor.

[0020] The device 1 comprises a winder strut 3 constituted in this example by a cylindrical strut and having a horizontally arranged longitudinal axis x-x. The cylindrical strut 3 is clamped at both ends by two opposing heads 4 and 5 of a horizontal axis clamp driven by an electric motor 6 . The strut 3 is rotatable on command around its own longitudinal axis x-x at a controllable and adjustable speed.

[0021] One end 7a of an elongated body is detachably fixed to the cylindrical strut 3 . This elongated body 7 will be helically wound on the strut 3 to create the helix 2 . The elongated body 7 consists in this example of a flat rectangular strip with a fixed straight cross-section. In this example, the strip is straight before being helically wound around the strut. The detachable mounting of the end 7a of the elongated ...

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PUM

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Abstract

A device for manufacturing a screw (2) comprises a cylindrical support (3) having a horizontal axis (x-x) and being rotatable there about. A straight bar (7) is wound spirally about the support (3). The bar (7) is constrained to a guide (8) and can perform movements in a parallel direction to the axis (x-x) of the support (3) on command of a translator provided with an endless screw (14). The process for manufacturing the screw comprises controlling axial movement of the guide (8) in a predetermined rapport with the rotation of the support (3). The invention is particularly applicable in the manufacture of a screw for a screw conveyor.

Description

technical field [0001] The invention relates to a method for producing a helix and a device for implementing the method. In particular, the invention relates to a manufacturing method for producing a screw conveyor. Background technique [0002] The following manufacturing methods are known in the prior art, in which a strip which is generally flat and has a fixed straight cross-section is wound around itself to form a relatively short helix, which is then subjected to tension stretch it out. [0003] The shape of the helix thus obtained usually does not correspond to the desired shape, so it generally has to be reworked by plastic deformation until it reaches the desired shape. The above-mentioned adjustment phase has to be carried out with considerable precision and requires long and cumbersome working times. [0004] GB242518 discloses a method for manufacturing a screw conveyor, comprising the following operations: fixing one end of a longitudinally elongated body on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65G33/26B21C37/26B21K5/04
CPCB21C37/26B21K5/04B21D11/06Y10T82/10Y10T29/49382Y10T82/30Y10T82/16016
Inventor 韦内·马尔凯西尼
Owner WAM SRL