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Expansion device

A technology of expanding and expanding, applied in the field of expanding devices for expanding and tightening coils, can solve the problems of easy slippage, weak expanding force, affecting the expanding efficiency of the expanding device, etc., so as to improve the expanding efficiency and improve the The effect of tension

Inactive Publication Date: 2014-02-19
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the coil material is in line-surface contact with the inclined surface, the expansion force on the coil material is weak, and it is prone to slipping, which affects the expansion efficiency of the expansion device.

Method used

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Examples

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Embodiment Construction

[0014] see figure 1 and figure 2 , the tensioning device 100 of this embodiment is used for tensioning the roll material 200 . The roll material 200 is provided with a roll hole 201 along the axial direction. The tensioning device 100 is passed through the roll hole 201 and abuts against the inner wall of the roll hole 201 so as to expand and tighten the roll material 200 on the tensioning device 100 . The tensioning device 100 includes a reel 10 , two tensioning elements 30 , a fixing sleeve 50 , a pushing element 70 and a locking element 90 .

[0015] Please also see image 3 , the reel 10 includes a socket portion 11 , a threaded portion 13 and an abutting portion 15 respectively disposed at two ends of the socket portion 11 . The sleeve portion 11 is approximately cylindrical, and the threaded portion 13 is formed by extending from one end of the sleeve portion 11 , which is approximately stepped cylindrical and coaxial with the sleeve portion 11 . The abutting porti...

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PUM

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Abstract

An expansion device comprises a winding shaft, at least one expansion part, a fixing sleeve and a pushing part. The winding shaft is provided with a first inclined plane, the at least one expansion part comprises a body and a plurality of protrusions which are arranged on the body in a protruding mode at intervals, two ends of the body are respectively provided with a second inclined plane and a third inclined plane, the body is sleeved outside the winding shaft, and the first inclined plane abuts against the second inclined plane. The fixing sleeve is provided with a plurality of fixing holes corresponding to the plurality of protrusions and is sleeved outside the body of the at least one expansion part, and the plurality of protrusions are arranged in the plurality of fixing holes in a penetrating mode. The pushing part is movably arranged at one end of the winding shaft, which is far away from the first inclined plane, the pushing part is provided with a fourth inclined plane which abuts against the third inclined plane, when the pushing part moves towards the at least one expansion part, the fourth inclined plane slides along the third inclined plane, the second inclined plane slides along the first inclined plane, so that the body of the at least one expansion part is pushed in an abutting mode to expand towards the direction of the fixing sleeve to abut against and expand the rolling materials. The expansion device has relatively high expansion efficiency.

Description

technical field [0001] The invention relates to a tensioning device, in particular to a tensioning device used for tensioning coil materials. Background technique [0002] Generally, when coil material is used, it is necessary to use a tensioning device to tighten the coil material. The tensioning device includes a reel and tensioning elements movably installed on both ends of the reel. The tensioning elements are provided with slopes, and the slopes of each tensioning element are inclined toward the direction of the other tensioning element. The reel is installed in the roll hole of the roll material, and the two expansion members move close to each other, and the slope faces against the walls at both ends of the roll hole of the roll material, so that the roll material is stretched tightly, so as to realize the expansion of the roll material in the On the expansion device. Because the coiled material is in line-surface contact with the inclined surface, the tensioning fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H18/04B65H16/04
CPCB65H75/242B65H75/246
Inventor 李兵杨波
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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