CN101691990A - System for detecting jumping quantity of sheath by light - Google Patents

Abstract

The invention belongs to the technical field of light detection and in particular comprises a continuous conductor laser, a concave lens, a convex lens, a cylindrical cylinder, a cylinder base, a positioning magnet, a light screen, a jig, bolts, a chute, a plane mirror, a hinge, a support base, a vertical plate of a light source support, a three-dimensional regulating platform, a graduated scale, an upright column of a sheath support, a cross beam of the sheath support, an upright column of a hinge support and a cross beam of the hinge support. The invention adopts mirror reflection of light to detect the jumping quantity of a sheath, has the characteristics of convenient use and adjustable detection accuracy and is suitable for accurate detection of the jumping quantity of the sheath.

Description

System for detecting jumping quantity of sheath by light

Technical field

The present invention relates to technical field of light detection, relate in particular to a kind of method of utilizing the direct reflection detection sheath jerk value of light.

Background technology

Sheath is mounted the two ends of left magnetic roller, and it is one of Primary Component of laser printer toner cartridge.Not enough or the even problem of jacket wall became uneven of roundness of sheath often appears in the assembling of the manufacturing of sheath and toner cartridge.Little when big during jerk value when both of these case all will cause sheath to rotate, this will directly influence the size in magnetic roller and photosensitive drums gap, and then can cause printing color density skewness.

Usually use at present and jump the jerk value that table is directly measured sheath.This side has two each and every one significant disadvantages: the one, and it is little to jump the list index slewing area, and measuring accuracy is difficult for improving; The 2nd, bring cut to sheath easily, bring potential risk for the toner cartridge workmanship.

Summary of the invention

The purpose of this invention is to provide a kind of system for detecting jumping quantity of sheath by light, this detection system can utilize the direct reflection principle to measure the jerk value of sheath.

Technical scheme of the present invention is: this sheath jerk value detection system comprises laser cell, optical screen unit, plane mirror, carrier unit and 5 parts of hinge; Laser cell, optical screen unit hinge are installed on the carrier unit, and an end of plane mirror is fixed on the hinge.Laser cell comprises semiconductor laser, concavees lens, convex lens, cylindricality cylinder, cylinder base and phase magnet, wherein the virtual focus F of concavees lens ₁' with the focal point F of convex lens ₂Overlap, this structure can effectively shorten the length of laser cell, thereby and the Gaussian beam that laser instrument is penetrated become parallel beam and reduce measuring error.

It is a rectangular transparent panel with even scale that optical screen is formed by optical screen, scale mark, rectangular opening, anchor clamps, bolt, chute in the optical screen unit, by anchor clamps and being bolted on the chute, scale mark and rectangular opening are all on optical screen, optical screen is by clamp clamps, have screw on the anchor clamps, the base of anchor clamps can be fixed on optical screen optional position on the chute by adjusting bolt in chute.The optical screen center does not have the line of ink marker to be convenient to laser beam vertically to pass, and 0 scale value is at the center of optical screen, and other scale mark is that the center left-right symmetric distributes with 0 scale value, and the next door of center is provided with rectangular opening and is convenient to ruler and passes.On the one hand can allow the laser beam of passing optical screen project on the plane mirror, can measure on the other hand from plane mirror and reflex to the position of the luminous point on the optical screen and then extrapolate the jerk value of sheath.

Plane mirror is the thin elongated stripe shape plane mirror that is formed by the hard metal polishing, and this hard metal is generally beryllium, because the systematic measurement error of the little introducing of its deformation quantity is little.One end of this plane mirror fixes on the hinge bracket crossbeam by hinges fixing, and it is attached on the sheath to be measured by gravity pressure.The diameter of hinge bracket crossbeam is suitable with the hinge internal diameter, and the surface of contact of hinge and hinge bracket crossbeam is very smooth, and when sheath rotated, plane mirror and hinge were an easy on and off swing with the axle center of hinge bracket crossbeam all.

Carrier unit is made up of bracket base, light source bracket riser, three-dimensional regulation platform, rule, sheath bracket upright post, sheath rack beam, hinge bracket column, hinge bracket crossbeam.Wherein light source bracket riser, sheath bracket upright post, hinge bracket column are installed on the bracket base, three-dimensional regulation platform, rule are fixed on the light source bracket riser, the sheath rack beam is the metal cylinder that level is installed on the sheath bracket upright post, and the hinge bracket crossbeam is the metal cylinder that level is installed on the hinge bracket column.

The light source bracket riser is used for installing three-dimensional regulation platform, rule, laser cell and optical screen unit.The sheath rack beam is used for installing sheath to be measured, and the diameter of sheath rack beam is suitable with the internal diameter of standard sheath.Rule is used for measuring optical screen and the distance of laser beam between the incidence point on the plane mirror, and the hinge bracket crossbeam is used for the hinge of mounting strap plane mirror.

Because optical screen can move up and down on chute, so the measuring accuracy of this system can be regulated.

Below in conjunction with accompanying drawing the present invention is described in detail:

[description of drawings]

Fig. 1, sheath jerk value measuring system synoptic diagram

Fig. 2, laser cell inner structure synoptic diagram

Fig. 3, parallel light tube construction features synoptic diagram

Fig. 4, optical screen cellular construction synoptic diagram

Fig. 5, plane mirror scheme of installation

Fig. 6, carrier unit structural representation

Fig. 7, sheath jerk value photo measure schematic diagram

Among the figure: 1, laser cell, 2, the optical screen unit, 3, plane mirror, 4, hinge, 5, sheath to be measured, 6, carrier unit, 11, continuous conductor laser, 12, concavees lens, 13, convex lens, 14, the cylindricality cylinder, 15, the cylinder base, 16, phase magnet, 21, optical screen, 211, scale mark, 212, rectangular opening, 22, the optical screen anchor clamps, 23, bolt, 24, chute, 61, bracket base, 621, the light source bracket flat board, 622, the three-dimensional regulation platform, 623, rule, 631, the sheath bracket upright post, 632, the sheath rack beam, 641, the hinge bracket column, 642, the hinge bracket crossbeam, 71, incident ray, 72, reflection ray, 73, the intersection point of incident ray and plane mirror, 74, the intersection point of reflection ray and optical screen, 75, the contact point of plane mirror and sheath to be measured.

As shown in Figure 1, three-dimensional regulation platform 622 and chute 24 are screwed on light source bracket riser 621, optical screen 21 is fixed on the anchor clamps 22, anchor clamps 22 are fixed on the chute 24 by bolt 23, rule 623 upper ends are attached on the three-dimensional regulation platform 622, pass the rectangular opening 212 of rule 623 lower ends from optical screen 21.

As shown in Figure 2, laser cell 1 comprises semiconductor laser 11, concavees lens 12, convex lens 13, cylindricality cylinder 14, cylindrical base 15 and phase magnet 16. Semiconductor laser 11, concavees lens 12 and convex lens 13 are positioned at the inside of cylindricality cylinder 14, and laser cell 1 is adsorbed on the irony three-dimensional regulation platform 622 by the phase magnet 16 on the cylindrical base 15.

As shown in Figure 5, sheath to be measured is enclosed within on the sheath bracket stand column and beam 632, and hinge 4 is installed on the hinge bracket crossbeam 642, and plane mirror 3 is fixed on the hinge 4.

Sheath jerk value measuring principle is as shown in Figure 7: plane mirror is adjusted into level in advance, then sheath to be measured is enclosed within on the sheath bracket stand column and beam 632, if this moment, plane mirror 3 was δ with the angle that horizontal direction forms, reflection ray 72 is β with the angle that incident ray 71 forms, the distance that the intersection point 74 of reflection ray 72 and optical screen 21 departs from optical screen center (0 scale value) is a, the incidence point 73 of incident ray 71 on plane mirror 3 is b to the distance at optical screen 21 centers, plane mirror 3 and sheath 5 contact points 75 are c to the distance in hinge 4 axle center, so

By the reflection of light law as can be known

β＝2δ                 (1)

By leg-of-mutton knowledge as can be known

tgβ＝a/b               (2)

So

$\mathrm{\δ}=\frac{1}{2}\arctan \left(\frac{a}{b}\right)---\left(3\right)$

When sheath rotated, δ was also in continuous variation, and the jerk value when establishing sheath and turning to certain position is Its available following formula is tried to achieve

$\▿l=\frac{c}{2}\arctan \left(\frac{a}{b}\right)---\left(4\right)$

Embodiment

Up-down adjustment hinge bracket column 641 makes plane mirror 3 levels that are pressed on the sheath rack beam 632.

Sheath 5 to be measured is enclosed within on the sheath rack beam 632, and plane mirror 3 is pressed on the sheath 5 to be measured, opens the laser power supply switch, allows obtain collimation laser from semiconductor laser 11 laser beam of coming out through parallel light tube 12.Vertical knob and the horizontal knob regulated on the three-dimensional platform 622 project on the plane mirror 3 laser beam of passing optical screen 21 centers straight down.

Rotate sheath 5, reflection ray 72 will depart from optical screen center one segment distance with the intersection point 74 of optical screen 21.This distance can directly be read by the scale mark on the optical screen 21 211, again by the incidence point 73 of rule 623 reading laser beams on plane mirror 3 and the distance at optical screen center, the jerk value when utilizing reflection of light law and mathematical formulae (4) can derive sheath 5 to turn to certain position.

Can move optical screen 21 to laser cell 1 direction in order to improve accuracy of detection, can increase a like this, b reduces measuring error.

Claims (5)

1. sheath jerk value optical detection device, it is characterized in that this device is made up of laser cell, optical screen unit, carrier unit, plane mirror and hinge, laser cell, optical screen unit hinge are installed on the carrier unit, and an end of plane mirror is fixed on the hinge.

2. sheath jerk value optical detection device according to claim 1, it is characterized in that the optical screen unit is made up of optical screen, scale mark, rectangular opening, anchor clamps, bolt, chute, scale mark and rectangular opening are all on optical screen, optical screen is by clamp clamps, have screw on the anchor clamps, the base of anchor clamps can slide along the chute inwall in chute.

3. optical screen according to claim 2 unit is characterized in that the center of 0 scale value at optical screen, and other scale mark is that the center left-right symmetric distributes with 0 scale value, and the optical screen center does not have scale mark.

4. pick-up unit according to claim 1, it is characterized in that carrier unit is by bracket base, the light source bracket riser, the three-dimensional regulation platform, rule, the sheath bracket upright post, the sheath rack beam, the hinge bracket column, the hinge bracket crossbeam is formed, light source bracket riser wherein, the sheath bracket upright post, the hinge bracket column is installed on the bracket base, the three-dimensional regulation platform, rule is fixed on the light source bracket riser, the sheath rack beam is the metal cylinder that level is installed on the sheath bracket upright post, and the hinge bracket crossbeam is the metal cylinder that level is installed on the hinge bracket column.

5. sheath rack beam according to claim 5 is characterized in that the internal diameter of the cross-sectional diameter of this root metal cylinder of sheath rack beam and sheath is suitable.

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