CN-116359130-B - Sample wheel for optical metering verification

Abstract

The invention discloses a sample wheel for optical metering verification, which comprises a supporting mechanism, a rotating mechanism, a translation mechanism and a control unit, wherein the supporting mechanism comprises a base, a sample wheel support and a sample wheel, the bottom of the sample wheel support is fixed on the base, the sample wheel is arranged above the sample wheel support through a rotating shaft, a plurality of sample chambers are arranged on the outer edge of the sample wheel, a sample fixing device is arranged in the sample chambers, the rotating mechanism comprises a stepping motor, the stepping motor drives the sample wheel to rotate, the translation mechanism comprises a hydraulic device and a sliding rail, one end of a hydraulic rod of the hydraulic device is hinged on the base, the other end of the hydraulic rod is arranged on the rotating shaft through a sleeve, the telescopic control unit controls the telescopic control unit to stretch and retract, a bearing is arranged between the sleeve and the rotating shaft, gears are arranged at two ends of the bearing, the bottom of the sliding rail is embedded into a horizontal sliding groove at the top of the sample wheel support, and racks meshed with the gears are arranged at the top along the sliding direction. The invention can avoid the influence of manual replacement of the sample on the measurement result, and avoid the influence of the measurement position of the sample on the measurement result, and has high working efficiency and accurate measurement data.

Inventors

• GAO HONGBO
• HU CHANGAN
• HE MIN
• ZENG LIMEI
• WU WEIGANG

Assignees

• 中国测试技术研究院

Dates

Publication Date

20260512

Application Date

20230313

Claims (4)

1. 1. The sample wheel for optical metering verification is characterized by comprising a supporting mechanism, a rotating mechanism, a translation mechanism and a control unit; The supporting mechanism comprises a base (1), a sample wheel bracket (3) and a sample wheel (4), wherein the bottom of the sample wheel bracket (3) is fixed on the base (1), the sample wheel (4) is arranged above the sample wheel bracket (3) through a rotating shaft (8), a plurality of sample chambers (5) are arranged at the outer edge of the sample wheel (4), and a sample fixing device is arranged in the sample chambers (5); The rotating mechanism comprises a stepping motor (6), the stepping motor (6) receives a pulse signal sent by the control unit and converts the pulse signal into angular displacement, and the sample wheel (4) is driven to rotate through a synchronous wheel, a speed reducer and a rotating shaft (8); The translation mechanism comprises a hydraulic device (7) and a sliding rail (9), wherein one end of a hydraulic rod (701) of the hydraulic device (7) is hinged to a base (1), the other end of the hydraulic rod is sleeved on a rotating shaft (8) through a sleeve (703), the hydraulic rod is controlled by a control unit to stretch and retract to push a sample wheel (4) to move forwards and backwards, a bearing (702) is arranged between the sleeve (703) and the rotating shaft (8), gears (10) are arranged at the extreme ends of the two ends of the rotating shaft (8), the bottom of the sliding rail (9) is embedded into a horizontal sliding groove (301) at the top of a sample wheel bracket (3), and a rack (901) meshed with the gears (10) is arranged at the top along the sliding direction; the distance meter is arranged at the measuring port and used for measuring the thickness of the sample, and the control unit calculates the displacement of the sample wheel (4) according to the thickness of the sample; The sample fixing device comprises a pair of clamping arms (501), wherein the clamping arms (501) are L-shaped, one end with a transverse bar is a free end for clamping a sample, the fixed end of the other end is fixed on a rim of a sample wheel (4) through the tail end of a half-thread screw (504), a spring support (505) is further arranged on a screw rod at one end of a nut of the half-thread screw (504), a long spring (506) is arranged between the spring supports (505) at the two clamping arms (501), and a short spring (507) is arranged between the spring supports (505) and the nut.
2. 2. The sample wheel for optical metrology inspection according to claim 1, wherein the inner wall of the clamp arm (501) and the outer surface of the sample wheel (4) between the two clamp arms are provided with anti-slip cushions (508).
3. 3. The sample wheel for optical metrological verification according to claim 1, wherein a long-strip-shaped adjusting hole (503) is formed in a rim of the sample wheel (4) in the sample chamber (5) along a circumferential direction, the half-thread screw (504) is arranged in the adjusting hole (503) and used for adjusting a distance between two clamping arms (501) according to a width of a sample, and the short spring (507) is arranged on the half-thread screw (504) and used for adjusting a distance between a transverse bar end of the two clamping arms (501) and an outer surface of the sample wheel according to a thickness of the sample.
4. 4. A sample wheel for optical metrology verification according to claim 3, characterized in that the adjustment hole (503) is provided on both sides with washers (502) that fit over half-threaded screws (504).

Description

Sample wheel for optical metering verification Technical Field The invention relates to the technical field of color verification, in particular to a sample wheel for optical metrological verification. Background Standard color plates are metering devices used to measure color. The standard color plate can calibrate the color measuring instrument, can be used as a standard for visually judging color samples, and can also be used for ensuring proper color matching in the production process of paint, plastics, glazed tiles, wallpaper, soft ornaments and clothes, or can be used for coordinating the colors of products of different industrial enterprises to lead the products to be harmoniously matched. Standard color plates can be made of different materials depending on the application. The reflection standard color plate is made of barium sulfate, magnesium oxide or polytetrafluoroethylene PTFE powder, or ceramic, enamel, opal glass, or fabric, cardboard, plastic, etc. The transmission standard color plate is generally made of colored glass or plastic with uniform color and good transparency. As a standard for transmitting the value to the chromaticity measuring instrument, the accuracy and reliability of the chromaticity measuring instrument are directly determined by the accuracy of the standard chromaticity value. The standard color plate detection method is that standard plates with known spectral reflectance or spectral reflectance factor are used as standards to multiply the ratio of the spectral responsivity of the standard color plate to the standard plate to obtain the spectral reflectance or spectral reflectance factor of the standard color plate to be detected. The standard color plate detection process comprises the steps of firstly placing a standard plate in a sample chamber, measuring the spectral responsivity of the standard plate, then placing all the tested samples in sequence, and measuring the spectral responsivity of all the samples. The sample chambers for conventional standard color plate assays are all stand-alone units, and can only hold a single sample, requiring the detection of a large number of samples per assay procedure. Therefore, the sample needs to be manually replaced, and the working efficiency is greatly reduced. In order to avoid the influence of stray light, the measuring device is often arranged in a darkroom, the computer at the control end is arranged outside the darkroom, and an experimenter needs to firstly install a sample in the darkroom and then operate a control program at the computer end, so that time and labor are wasted. The traditional standard color plate detection sample chamber consists of a measuring port and a sample clamp. The sample is vertically placed on the measuring port, the back is fixed through a sample clamp, a spring is arranged on the sample clamp, one end of the spring is fixed on the instrument, and the other end of the spring can move back and forth in the vertical direction. The traditional sample chamber has the following defects that 1, a standard plate and a sample need to be replaced for many times, the speed is low, 2, fingerprints are easy to be left on the surface of the sample, the accuracy of measurement data is affected, 3, the measurement hole cannot be guaranteed to be in the center of the sample, 4, the sample is required to be not too large, too thick and too heavy, or to fall off easily, and 5, the requirement of automation of the whole calibrating device cannot be met. Disclosure of Invention The invention aims to solve the problems, and provides a sample wheel for optical metrological verification, which can be used for simultaneously containing a plurality of samples, avoids the influence of manually replacing the samples on the measurement result, avoids the influence of the measurement position of the samples on the measurement result, and has high working efficiency and accurate measurement data. The technical proposal is as follows: The sample wheel for optical metrological verification comprises a supporting mechanism, a rotating mechanism, a translation mechanism and a control unit, wherein the supporting mechanism comprises a base, a sample wheel support and a sample wheel, the bottom of the sample wheel support is fixed on the base, the sample wheel is arranged above the sample wheel support through a rotating shaft, a plurality of sample chambers are arranged at the outer edge of the sample wheel, and a sample fixing device is arranged in the sample chambers; The rotating mechanism comprises a stepping motor, the stepping motor receives the pulse signals sent by the control unit and converts the pulse signals into angular displacement, and the sample wheel is driven to rotate through the synchronous wheel, the speed reducer and the rotating shaft; The translation mechanism comprises a hydraulic device and a sliding rail, wherein one end of a hydraulic rod of the hydraulic device is hinged to the base, the other