CN220912978U - Adjustable precious stone refractometer - Google Patents

Abstract

The utility model relates to the technical field of jewelry identification instruments, in particular to an adjustable precious stone refractometer, which comprises a machine body, wherein an eyepiece is fixedly sleeved on the left side of the machine body, a lens, a prism, a light barrier and a light source are sequentially and fixedly arranged at the center position of an inner cavity of the machine body from left to right, a fixing frame and a measuring ruler are fixedly arranged at the position of the rear center of the machine body, a gear is movably arranged at the rear of the measuring ruler, a motor is fixedly arranged at the rear of the fixing frame, the motor, a driving wheel, a driven wheel, the gear and a reflecting plate are matched for use, so that the rotation angle of the reflecting plate is accurate, return stroke or clearance is not easy to generate during rotation, the rotation angle can be checked and measured through the matching of a fixing block and the measuring ruler, the adjustment rotation of the reflecting plate is realized, the practicability and the application range are improved, and the accuracy and reliability of a measurement result are ensured.

Description

Adjustable precious stone refractometer

Technical Field

The utility model relates to the technical field of jewelry identification instruments, in particular to an adjustable precious stone refractometer.

Background

Gemstone refractometers are the most dominant tool for gemstone measurement, and are also the most powerful tools for identifying gemstone species. The method can be used for nondestructively, rapidly and accurately measuring the refractive index value of the precious stone and determining other optical characteristics of the precious stone, and in the prior art, the position of the reflecting plate is fixed, so that the refractive angle of the precious stone is fixed, and the error of a measuring result is influenced because the refractive angles of the precious stone are not adjustable due to the difference of the precious stone.

Disclosure of utility model

The utility model aims to solve the defects in the prior art and provides an adjustable gemstone refractometer.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides an adjustable precious stone refractometer, includes the fuselage, the fixed eyepiece that has cup jointed in the left side of fuselage, the central point of fuselage inner chamber puts from a left side to right side fixed mounting in proper order has lens, prism, light barrier and light source, the back center of fuselage is towards left side fixed mounting has mount and metric chi, the back movable mounting of metric chi has the gear, the back fixed mounting of mount has the motor, the output of motor passes mount fixed mounting and has the action wheel, the outer wall movable mounting of action wheel has the follow driving wheel, the outer wall connection from the driving wheel with the output of motor has the connecting rod, the preceding fixed mounting of gear has the dead lever, the dead lever in front of gear is worn excessive chi and fuselage fixed mounting and is had the reflecting plate.

Preferably, the top surface fixed mounting of prism has the gripping platform, the preceding fixed mounting of gripping platform has the bull stick, the proficiency of bull stick is four, along gripping platform circumference evenly distributed, four the outer wall of bull stick has all movably sleeved with the clamping jaw, the junction fixed mounting of clamping jaw has the pivot, the inner wall fixed mounting of clamping jaw has first spring, the outer wall of clamping jaw is connected with the second spring with fuselage inner chamber bottom surface.

Preferably, the measuring ruler is a 360-degree ruler, and zero graduation lines are perpendicular to the bottom surface of the machine body.

Preferably, the outer wall of the gear is fixedly provided with a fixed block, and the fixed block is parallel to the reflecting plate.

Preferably, the number of the first springs and the second springs is a plurality, and the first springs and the second springs are uniformly distributed along the transverse direction of the clamping jaw.

Preferably, the first spring is in an extended state and the second spring is in a compressed state.

The utility model has the following beneficial effects:

1. Through the cooperation of motor, action wheel, follow driving wheel, gear and reflecting plate use for can be accurate to the rotation angle of reflecting plate, rotate and do the text and be difficult for producing return stroke or clearance, use through the cooperation of fixed block and measuring tape, make can be to rotation angle's inspection and measurement, realize the regulation rotation to the reflecting plate, improve practicality and application scope, rotation angle is accurate, guarantees measuring result's accuracy and reliability.

2. Through the cooperation of clamping jaw, pivot, first spring and second spring use for can adjust firm centre gripping to not unidimensional precious stone, realize expanding application range, ensure that different precious stones can be firm fix in suitable position, avoid influencing measuring result's accuracy because of the change of precious stone position.

Drawings

FIG. 1 is a schematic diagram showing the overall structure of an adjustable gemstone refractometer according to the present utility model;

FIG. 2 is a schematic diagram showing the structure of a clamping jaw of an adjustable gemstone refractometer according to the present utility model;

FIG. 3 is a schematic view showing the structure of an eyepiece of an adjustable gemstone refractometer according to the present utility model;

FIG. 4 is a schematic view showing a light source structure of an adjustable gemstone refractometer according to the present utility model;

fig. 5 is a schematic diagram showing the motor structure of an adjustable gemstone refractometer according to the present utility model.

In the figure: 1. a body; 2. an eyepiece; 3. a gear; 4. driven wheel; 5. a measuring ruler; 6. a fixed block; 7. a fixing frame; 8. a motor; 9. a prism; 10. a clamping table; 11. a clamping jaw; 12. a first spring; 13. a second spring; 14. a rotating shaft; 15. a rotating rod; 16. a light barrier; 17. a light source; 18. a lens; 19. a driving wheel; 20. a connecting rod; 21. and a reflecting plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-5, the adjustable precious stone refractometer comprises a machine body 1, wherein an eyepiece 2 is fixedly sleeved on the left side of the machine body 1, a lens 18, a prism 9, a light barrier 16 and a light source 17 are sequentially and fixedly installed in the center position of the inner cavity of the machine body 1 from left to right, a fixing frame 7 and a measuring ruler 5 are fixedly installed in the center of the rear side of the machine body 1 towards the left, a gear 3 is movably installed in the rear side of the measuring ruler 5, a motor 8 is fixedly installed in the rear side of the fixing frame 7, an output end of the motor 8 penetrates through the fixing frame 7 to fixedly install a driving wheel 19, a driven wheel 4 is movably installed on the outer wall of the driving wheel 19, a connecting rod 20 is connected with the outer wall of the output end of the driven wheel 4 and the motor 8, a fixed rod is fixedly installed in the front of the gear 3, and a reflecting plate 21 is fixedly installed in the front of the fixed rod in the front of the gear 3 and penetrates through the measuring ruler 5 and the machine body 1.

According to the utility model, the clamping table 10 is fixedly arranged on the top surface of the prism 9, the rotary rods 15 are fixedly arranged in front of the clamping table 10, the four rotary rods 15 are well and evenly distributed along the circumference of the clamping table 10, the clamping jaws 11 are movably sleeved on the outer walls of the four rotary rods 15, the rotating shafts 14 are fixedly arranged at the connecting positions of the clamping jaws 11, the first springs 12 are fixedly arranged on the inner walls of the clamping jaws 11, the second springs 13 are connected with the outer walls of the clamping jaws 11 and the bottom surface of the inner cavity of the machine body 1, and the four clamping jaws 11 are arranged, so that precious stones can be firmly clamped in four directions, and the precious stones are better firmly positioned at proper positions and are not easy to deviate.

In the utility model, the measuring ruler 5 is a 360-degree ruler, the zero scale line is perpendicular to the bottom surface of the machine body 1, and the 360-degree ruler is arranged, so that 360-degree rotation can be detected and checked, the adjustment is more accurate, and the reliability of a measuring result is ensured.

In the utility model, the fixed block 6 is fixedly arranged on the outer wall of the gear 3, the fixed block 6 is parallel to the reflecting plate 21, and the fixed block 6 is arranged, so that the position change of the reflecting plate 21 can be observed more conveniently, and the fine adjustment and the accurate adjustment of the reflecting plate 21 are convenient.

In the utility model, the number of the first springs 12 and the second springs 13 is a plurality, the first springs 12 and the second springs 13 are uniformly distributed along the transverse direction of the clamping jaw 11, so that the force on the clamping jaw 11 is strong enough to firmly clamp the precious stone, and the influence on the accuracy of the measurement result caused by the change of the position of the precious stone is avoided.

In the utility model, the first spring 12 is in a stretching state, the second spring 13 is in a compression state, the first spring 12 is in a stretching state, so that the clamping jaw 11 can be pulled inwards, and the second spring 13 is in a compression state, so that the clamping jaw 11 can be pushed inwards, and precious stones with different sizes can be clamped conveniently.

The application method and the advantages of the utility model are as follows: the adjustable gemstone refractometer is used in the following working process: placing the precious stone to be detected on the clamping table 10, pulling the clamping jaw 11 outwards along the rotating rod 15, further stretching the first spring 12, further compressing the second spring 13, stopping when the precious stone is placed at a proper position, stretching the second spring 13 to push the clamping jaw 11 to rotate inwards along the rotating rod 15, rebounding the first spring 12 to drive the clamping jaw 11 to move inwards, firmly fixing the precious stone to be detected at the current position, starting the light source 17 to generate light, passing through the light barrier 16 to the lens 18 to the reflecting plate 21 and finally reflecting to the prism 9, observing from the eyepiece 2 by a worker, starting the motor 8 to drive the driving wheel 19 to rotate when the reflecting angle is required to be adjusted according to the precious stone, driving the driven wheel 4 to rotate reversely, driving the gear 3 to rotate in the same direction to drive the fixed block 6 and the reflecting plate 21, observing the angle change of the contrast measuring scale 5 of the fixed block 6, and stopping when rotating to a proper angle.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. An adjustable gemstone refractometer, characterized by: including fuselage (1), eyepiece (2) have been cup jointed in the fixed left side of fuselage (1), the central point of fuselage (1) inner chamber puts from a left side to right side fixed mounting in proper order has lens (18), prism (9), barn door (16) and light source (17), the back central point of fuselage (1) is towards left side fixed mounting has mount (7) and metric chi (5), movable mounting has gear (3) behind metric chi (5), the back fixed mounting of mount (7) has motor (8), the output of motor (8) passes mount (7) fixed mounting and has action wheel (19), the outer wall movable mounting of action wheel (19) has from driving wheel (4), the outer wall of driving wheel (4) and the output of motor (8) is connected with connecting rod (20), the preceding fixed mounting of gear (3) has the dead lever, the preceding dead lever of gear (3) wear behind excessive chi (5) and the back fixed mounting of fuselage (1) have reflecting plate (21).

2. An adjustable gemstone refractometer according to claim 1, wherein: the top surface fixed mounting of prism (9) has grip block (10), the preceding fixed mounting of grip block (10) has bull stick (15), the proficiency of bull stick (15) is four, along grip block (10) circumference evenly distributed, four the equal activity of outer wall of bull stick (15) has cup jointed clamping jaw (11), the junction fixed mounting of clamping jaw (11) has pivot (14), the inner wall fixed mounting of clamping jaw (11) has first spring (12), the outer wall of clamping jaw (11) is connected with second spring (13) with fuselage (1) inner chamber bottom surface.

3. An adjustable gemstone refractometer according to claim 1, wherein: the measuring ruler (5) is a 360-degree ruler, and zero scale lines are perpendicular to the bottom surface of the machine body (1).

4. An adjustable gemstone refractometer according to claim 1, wherein: the outer wall of the gear (3) is fixedly provided with a fixed block (6), and the fixed block (6) is parallel to the reflecting plate (21).

5. An adjustable gemstone refractometer according to claim 2, wherein: the number of the first springs (12) and the second springs (13) is a plurality, and the first springs and the second springs are uniformly distributed along the transverse direction of the clamping jaw (11).

6. An adjustable gemstone refractometer according to claim 2, wherein: the first spring (12) is in a stretched state, and the second spring (13) is in a compressed state.