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Equipment for sharpening blades

A blade and equipment technology, applied in the field of blade sharpening equipment, can solve problems such as output loss and output reduction, and achieve the effect of rapid sharpening

Active Publication Date: 2017-11-14
FUTURA SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, sharpening of the blades needs to be provided at regular intervals, but this operation can cause a considerable loss of production, especially considering that the cutting machines used to produce the paper rolls are usually operated at very high speeds, so that even a short stoppage can also result in significant yield losses

Method used

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  • Equipment for sharpening blades
  • Equipment for sharpening blades
  • Equipment for sharpening blades

Examples

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Embodiment Construction

[0023] Referring to the attached drawings (especially Figure 1A to Figure 2B ), the device 1 according to the invention can be used for sharpening blades, in particular for cutting machines provided with blades 4 . The blade 4 is provided with two bevels (bevels) which are connected to each other forming a sharp or cutting edge 40 .

[0024] The device 1 comprises two grinding wheels 2, 3 supported by respective movable arms 20, 30, said arms moving said grinding wheels 2, 3 into contact with said sharpening edge 40 on command to perform a sharpening operation.

[0025] Said arms 20 , 30 form fulcrums with respect to each other so as to define a first type of double lever like scissors with the resistance constituted by the friction generated by the contact of the grinding wheels 2 , 3 with the blade 4 . The fulcrum of the double lever formed by the arms 20 , 30 has an axis x perpendicular to the cutting plane P defined by the sharp edge 40 of the blade 4 . Said axis x is e...

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Abstract

A sharpening device for sharpening blades mounted on a cutting machine, comprising two grinding wheels (2, 3) supported by respective movable supports (20, 30) configured to enable said The grinding wheels (2, 3) follow a predetermined trajectory (R2, R3) from the standby or deactivated configuration into the active configuration, and vice versa. In the standby or deactivated configuration, the grinding wheels (2, 3) are located in contact with the blade ( 4) At a predetermined distance apart, in the activated configuration, the grinding wheels (2, 3) are in contact with the cutting edge (40) of the blade (4). The movable supports (20, 30) are configured to move the grinding wheels (2, 3) along corresponding arcuate trajectories, so that each grinding wheel (2, 3) is in contact with the cutting edge (40) of the blade (4). The contact between the respective sides is progressive, whereby the contact between the grinding wheel and the blade increases progressively as the device transitions from the standby or inactive configuration to the active configuration.

Description

technical field [0001] The present invention relates to a device for sharpening blades, in particular blades usable for the production of rolls of paper. Background technique [0002] It is known that in the conventional process of producing paper rolls, a winder is used to wind a paper web around a cardboard core to obtain an intermediate product commonly called "roll stock", which consists of a paper roll wound on a core constituted, and are destined to be cut transversely to obtain rolls of commercial size, ie shorter rolls. [0003] Transversal cutting of the coil is done by a cutting machine provided with a circular blade or a band saw. [0004] The transverse cutting of the coil is particularly important. In fact, cutting the web along a plane that is not quite normal to the axis of the web results in flawed rolls in which the side bases are inclined. This disadvantage is exacerbated when these rolls are used in automatic dispensers which, in fact, require the side ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D15/08B24B3/36B24B3/46
CPCB24D15/082B24B3/36B24B3/46B24D15/08B26D7/12
Inventor 吉瓦克池诺·吉尔拉尼西罗·瓜里尼
Owner FUTURA SPA
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