Coaxial pressure approaching type hardness detector

A detector and pressure technology, which is applied in the field of coaxial pressure approximation hardness detector, can solve the problems of high user requirements, achieve the effects of improving control accuracy, eliminating gaps, and avoiding errors in force measurement values

Active Publication Date: 2013-09-18
CHENGDU RETOOL SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Coaxial pressure approaching type hardness detector

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with accompanying drawing:

[0012] Such as figure 1 Shown: the present invention includes motor 1, small synchronous wheel 17, synchronous belt 18, displacement sensor 2, rear fixed cylinder 3, rear bearing 4, pressure rod 5, end face bearing 6, large synchronous wheel 7, spring 11, base 12 , force sensor 14, front bearing 16, screw nut 19, guide cross bar 8, position detector 9 and guide vertical bar 10, the sensing end of displacement sensor 2 passes through rear fixed tube 3 one end and the first end of pressure bar 5 End contact, the section of the pressure rod 5 in contact with the displacement sensor 2 is connected to the rear fixed cylinder 3 through the rear bearing 4, the outer surface of the middle section of the pressure rod 5 is a threaded surface and is matched with the screw nut 19, and the pressure rod 5 can only be straight Movement, its pressure end diameter is 12mm, as the indenter ...

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Abstract

The invention discloses a coaxial pressure approaching type hardness detector which comprises a motor, a small synchronizing wheel, a synchronous belt, a displacement sensor, a rear fixing barrel, a rear bearing, a pressing rod, an end-face bearing, a large synchronizing wheel, a spring, a base, a force sensor, a front bearing, a lead-screw nut, a guide cross rod, a position detector and a guide upright rod. By the adoption of the mode of directly checking a sample by using the force sensor, and the force measurement value error caused by frictional force and the like is avoided; when the nut is fixed and axially positioned through the spring, a gap of a lead screw is eliminated, and the control precision of a pressure head is improved; moreover, due to the coaxial design of the displacement sensor, the pressure head and the lead screw, an Abbe error is avoided.

Description

technical field [0001] The invention relates to a hardness testing device for cigarette filter rods, in particular to a coaxial pressure approximation type hardness testing instrument. Background technique [0002] Cigarette / filter rod hardness tester is to test the hardness of cigarettes or filter rods by compressing samples by mechanical means, which is an indispensable means for cigarette quality control. According to the national standard, the pressure plate carrying the sample is a plane larger than 20x20mm, the indenter is a cylinder with a diameter of 12mm, and the pressure is 300gf, that is, 2.99N. This was very common in early hardness testers. In this mode, weights are usually used directly to achieve a pressure of 0.3Kg, which is stable and reliable. Due to the popularity of automatic measurement and multi-functional integration, the sample cannot be transported reliably when the sample is placed horizontally, and the mechanism is also complicated, so this mode ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/42
Inventor 文锦孟
Owner CHENGDU RETOOL SCI & TECH CO LTD
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