A device for reducing interstage differences in multispectral colorimeters

Abstract

This utility model relates to the field of color measurement technology for colorimeters, and discloses a device for reducing inter-stage differences in multispectral colorimeters. The device includes a base, with a three-axis traveling mechanism fixedly connected to the upper surface of the base. A mounting bracket is fixedly connected to one side of the Z-axis mover of the three-axis traveling mechanism, and a holder for supporting the colorimeter is fixedly connected to one side of the mounting bracket. A rotating shaft is rotatably connected inside the holder, with both ends of the shaft passing through the holder. A micro motor for rotating the shaft is fixedly connected to the upper surface of the holder. This utility model, through the three-axis traveling mechanism and the slotted photoelectric sensor, achieves automatic, rapid, and continuous measurement of multiple standard color cards, completely avoiding problems such as positioning errors, inconsistent pressure, and recording errors caused by manual operation, ensuring high consistency and repeatability of the calibration process.

Description

Technical Field

[0001] This utility model relates to the field of color measurement technology of colorimeters, and more specifically to a device for reducing the inter-stage difference of a multispectral colorimeter. Background Technology

[0002] A multispectral colorimeter is a color measurement device based on a multispectral sensor. It typically has eight spectral channels and features advantages such as small size, low power consumption, and low cost. It is widely used in industrial fields where high color accuracy is required.

[0003] However, due to the poor consistency of multispectral sensors, there are significant differences in measurement results between different instruments, which seriously affects the reliability and consistency of color measurement. Traditional calibration methods rely on manual operation, which is inefficient and prone to human error. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a device for reducing the inter-stage difference of a multispectral colorimeter, so as to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a device for reducing inter-stage differences in a multispectral colorimeter, comprising a base, a three-axis traveling mechanism fixedly connected to the upper surface of the base, a mounting bracket fixedly connected to one side of the Z-axis mover of the three-axis traveling mechanism, a mounting bracket fixedly connected to one side of the mounting bracket to support the colorimeter, a rotating shaft rotatably connected inside the mounting bracket, both ends of the rotating shaft passing through the mounting bracket, a micro motor for rotating the rotating shaft fixedly connected to the upper surface of the mounting bracket, two opposing sector plates (first and second) fixedly connected to the bottom circumference of the rotating shaft, ten circular holes on the first sector plate, each containing a transparent film of a different color, slotted photoelectric sensors fixedly connected to the XY-axis movers of the three-axis traveling mechanism, multiple Z-shaped baffles for use with the slotted photoelectric sensors fixedly connected to the XY-axis guide rails of the three-axis traveling mechanism, and multiple color cards arranged in an array on the upper surface of the base.

[0006] As a further embodiment of this utility model, multiple pin seats are fixedly connected to the XY axis guide rails of the three-axis walking mechanism, and electromagnetic pins that cooperate with the pin seats are fixedly connected to the XY axis movers of the three-axis walking mechanism.

[0007] As a further embodiment of this utility model, the multiple color cards are arranged in a five-row, six-column array, and the pins on the XY axes of the three-axis walking mechanism correspond to the five-row, six-column color cards respectively, and the Z-shaped baffles on the XY axes of the three-axis walking mechanism correspond to the five-row, six-column color cards respectively.

[0008] As a further embodiment of this utility model, a fixing plate is hinged to one side of the card holder, and a through hole is provided on the fixing plate. A locking screw is provided in the through hole, and the threaded end of the locking screw is inserted into the card holder and threadedly connected to the card holder.

[0009] As a further embodiment of this utility model, the sector plate II has positioning pin holes that are the same number as the number of round holes and correspond one-to-one, and an electromagnetic pin I that works with the positioning pin holes is fixedly connected to the mounting bracket.

[0010] As a further embodiment of this utility model, the base is provided with a glass plate, and the glass plate is attached with a limiting frame that is the same number as the color cards and whose positions correspond one-to-one.

[0011] As a further embodiment of this utility model, the shape of the color card matches the inner shape of the limiting frame, and the thickness of the limiting frame is less than the thickness of the color card.

[0012] As a further embodiment of this utility model, the inner wall of the cavity formed by the card holder and the fixed card plate is provided with a contour groove that matches the shape of the colorimeter.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model device, through a three-axis walking mechanism and a slotted photoelectric sensor, realizes automatic, rapid and continuous measurement of standard color cards, completely avoiding problems such as positioning errors, inconsistent pressure and recording errors caused by manual operation, and ensuring high consistency and repeatability of the calibration process.

[0015] 2. This utility model, through the combination of a rotating fan-shaped transparent film design with a micro motor and an electromagnetic pin, can automatically and accurately switch between multiple different spectral conditions in a single positioning, without the need for manual filter replacement or multiple calibrations, greatly expanding the data dimensions and accuracy of a single calibration.

[0016] 3. The three-axis walking mechanism of this utility model, combined with the locking mechanism of the electromagnetic pin and the pin seat, transforms the moving part into a rigid structure at the moment of measurement, effectively suppressing the slight shaking caused by the micro-vibration of the motor or the external environment, ensuring the stability of the measuring head at the moment of contact with the color card, thereby improving the accuracy of the single measurement data. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is an enlarged schematic diagram of the card holder structure of this utility model.

[0019] Figure 3 This utility model Figure 2A schematic diagram of the unfolded structure.

[0020] Figure 4 This is a schematic diagram of the bottom structure of the card holder of this utility model.

[0021] Figure 5 This is a schematic diagram of the positioning component structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the exploded structure of the base of this utility model.

[0023] The attached diagram is labeled as follows: 1. Base; 2. Three-axis walking mechanism; 3. Mounting bracket; 4. Card holder; 5. Glass plate; 6. Limiting frame; 7. Color card; 8. Fixing plate; 9. Contouring groove; 10. Through hole; 11. Locking screw; 12. Micro motor; 13. Rotating shaft; 14. Sector plate one; 15. Round hole; 16. Transparent film; 17. Sector plate two; 18. Positioning pin hole; 19. Electromagnetic pin one; 20. Slotted photoelectric sensor; 21. Z-shaped baffle; 22. Electromagnetic pin two; 23. Pin holder. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Reference Figures 1-6 This utility model provides a device for reducing the inter-stage difference of a multispectral colorimeter, including a base 1. A three-axis traveling mechanism 2 is bolted to the upper surface of the base 1. A mounting bracket 3 is bolted to one side of the Z-axis mover of the three-axis traveling mechanism 2. A mounting bracket 4 for supporting the colorimeter is bolted to one side of the mounting bracket 3. A rotating shaft 13 is rotatably connected inside the mounting bracket 4. Both ends of the rotating shaft 13 pass through the mounting bracket 4. A micro motor 12 for rotating the rotating shaft 13 is bolted to the upper surface of the mounting bracket 4. A bolted connection is made to the outer circumference of the bottom end of the rotating shaft 13. The system is equipped with two opposing sector plates, one 14 and the other 17. The sector plate 14 has ten circular holes 15, and each of the circular holes 15 contains a transparent film 16 of a different color. The XY axis moving parts of the three-axis walking mechanism 2 are all fixedly connected with slotted photoelectric sensors 20 (the slotted photoelectric sensor 20 model is: E3S-GS15N inductive switch) by bolts. The XY axis guide rails of the three-axis walking mechanism 2 are respectively fixedly connected with multiple Z-shaped baffles 21 that cooperate with the slotted photoelectric sensors 20 by bolts. Multiple color cards 7 are arranged in an array on the upper surface of the base 1.

[0026] The three-axis walking mechanism 2 and the slotted photoelectric sensor 20 enable automatic, rapid and continuous measurement of 30 standard color cards 7, completely avoiding problems such as positioning errors, inconsistent pressure and recording errors caused by manual operation, and ensuring high consistency and repeatability of the calibration process.

[0027] In a single positioning process, to simulate different measurement conditions, the micro motor 12 is controlled to rotate the shaft 13, thereby driving the sector plate 14 and sector plate 2 17 to rotate. The sector plate 14 is inlaid with transparent films 16 of different colors. Each time it rotates by an angle, a different filter can be rotated into the optical path of the colorimeter, thereby changing the spectral characteristics of the incident or reflected light. Whenever the sector plate rotates to a new position, the electromagnetic pin 19 extends and inserts into the corresponding positioning pin hole 18 on the sector plate 2 17 to ensure that the position of the filter is accurate and to avoid optical path errors caused by positioning deviations.

[0028] It should be noted that the micro motor 12 is existing technology. It is a motor with an encoder, and the number of rotations and rotation angle of the motor output shaft are controllable and highly accurate. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0029] Furthermore, multiple pin seats 23 are fixedly connected to the XY axis guide rails of the three-axis walking mechanism 2 by bolts, and electromagnetic pins 22 (model of electromagnetic pin 22 is: PADA5442 cylindrical head electromagnetic lock) that cooperate with the pin seats 23 are fixedly connected to the XY axis movers of the three-axis walking mechanism 2 by bolts.

[0030] Precise positioning and measurement are achieved by controlling the three-axis walking mechanism 2, which drives the mounting bracket 3 and colorimeter to move directly above the target color card 7. By controlling the stepper motor of the three-axis walking mechanism 2, the mover is moved to the preset grid coordinate position of the color card 7. When the mover moves to the vicinity of the target position, the slotted photoelectric sensor 20 fixed on the mover will interact with the Z-shaped baffle 21 fixed on the guide rail.

[0031] Once the precise position is reached, electromagnetic pin 22 can extend and insert into pin seat 23, temporarily mechanically locking the XY axis mover, greatly enhancing the structural rigidity during measurement and avoiding errors caused by minor vibrations. The Z axis mover descends, causing the colorimeter's measuring head to contact the surface of the color card 7 with standard pressure, triggering the colorimeter to complete one spectral data acquisition.

[0032] Furthermore, multiple color cards 7 are arranged in a five-row, six-column array, with pin seats 23 on the three-axis walking mechanism 2XY axis corresponding to the five-row, six-column color cards 7 respectively, and Z-shaped baffles 21 on the three-axis walking mechanism 2XY axis corresponding to the five-row, six-column color cards 7 respectively.

[0033] The three-axis walking mechanism 2, together with the locking mechanism of electromagnetic pin 22 and pin seat 23, transforms the moving parts into a rigid structure at the moment of measurement, effectively suppressing the slight shaking caused by motor micro-vibration or external environment, ensuring the stability of the measuring head at the moment of contact with the color card 7, thereby improving the accuracy of single measurement data.

[0034] In this utility model, a fixing plate 8 is hinged to one side of the card holder 4. A through hole 10 is provided on the fixing plate 8. A locking screw 11 is provided in the through hole 10, and the threaded end of the locking screw 11 is inserted into the card holder 4 and threadedly connected to the card holder 4.

[0035] First, place multiple standard color cards 7 in an array of five rows and six columns on the glass plate 5 of the base 1 and fix them with the limiting frame 6 to ensure that the position of each color card 7 is absolutely consistent. Then, place the colorimeter to be calibrated into the contour cavity formed by the card holder 4 and the fixed card plate 8, tighten the locking screw 11 to clamp it firmly, and ensure that the position and posture of each card are completely consistent.

[0036] Furthermore, the inner wall of the cavity formed by the card holder 4 and the fixed card plate 8 is provided with a contour groove 9 that matches the shape of the colorimeter.

[0037] In this utility model, the sector plate 17 has positioning pin holes 18 that are the same number as the round holes 15 and correspond one-to-one. The mounting bracket 3 is fixedly connected with an electromagnetic pin 19 (the electromagnetic pin 19 model is: PADA5442 cylindrical head electromagnetic lock) that works with the positioning pin holes 18 by bolts.

[0038] By combining a rotating fan-shaped transparent film 16 with a micro motor 12 and an electromagnetic pin 19, up to 10 different spectral conditions can be automatically and accurately switched in a single positioning without the need for manual filter replacement or multiple calibrations, greatly expanding the data dimensions and accuracy of a single calibration.

[0039] Each time the filter is switched, the colorimeter performs a measurement, thereby obtaining data for the same color chart 7 under multiple different spectral conditions in one positioning. The system traverses 10 transparent films 16 on each color chart 7. Finally, the system collects a total of 300 standard data points from the colorimeter under 30 color charts and 10 conditions.

[0040] In this utility model, a glass plate 5 is provided on the base 1, and a limiting frame 6 is attached to the glass plate 5 in the same number and in the same position as the color card 7.

[0041] Furthermore, the shape of the color card 7 matches the inner shape of the limiting frame 6, and the thickness of the limiting frame 6 is less than the thickness of the color card 7.

[0042] The use of this utility model involves the following steps:

[0043] S1: First, place multiple standard color cards 7 in an array of five rows and six columns on the glass plate 5 of the base 1 and fix them with the limiting frame 6 to ensure that the position of each color card 7 is absolutely consistent. Place the colorimeter to be calibrated into the contour cavity formed by the card holder 4 and the fixed card plate 8, tighten the locking screw 11 to clamp it firmly, and ensure that the position and posture of each card are completely consistent.

[0044] S2: Precise positioning and measurement, control the three-axis walking mechanism 2, drive the mounting bracket 3 and colorimeter to move directly above the target color card 7, and control the stepper motor of the three-axis walking mechanism 2 to move the mover to the preset grid coordinate position of the color card 7. When the mover moves to the vicinity of the target position, the slotted photoelectric sensor 20 fixed on the mover will interact with the Z-shaped baffle 21 fixed on the guide rail.

[0045] S3: After reaching the precise position, electromagnetic pin 22 can extend and insert into pin seat 23, temporarily mechanically locking the XY axis mover, greatly enhancing the structural rigidity during measurement and avoiding errors caused by minor vibrations. The Z axis mover descends, causing the colorimeter's measuring head to contact the color card 7 surface with standard pressure, triggering the colorimeter to complete one spectral data acquisition.

[0046] S4: In a single positioning process, in order to simulate different measurement conditions, the micro motor 12 is controlled to rotate the shaft 13, thereby driving the sector plate 14 and sector plate 2 17 to rotate. The sector plate 14 is inlaid with transparent films 16 of different colors. Each time it rotates by an angle, a different filter can be rotated into the optical path of the colorimeter, thereby changing the spectral characteristics of the incident light or reflected light. Whenever the sector plate rotates to a new position, the electromagnetic pin 19 extends and inserts into the corresponding positioning pin hole 18 on the sector plate 2 17 to ensure that the position of the filter is accurate and to avoid optical path errors caused by positioning deviation.

[0047] S5: Each time the filter is switched, the colorimeter performs a measurement, thereby obtaining data of the same color chart 7 under multiple different spectral conditions in one positioning. The system traverses 10 kinds of transparent films 16 on each color chart 7. Finally, the system collects a total of 300 standard data points of the colorimeter under 30 color marks and 10 conditions.

[0048] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0049] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0050] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A device for reducing interstage differences in a multispectral colorimeter, comprising a base (1), characterized in that: A three-axis walking mechanism (2) is fixedly connected to the upper surface of the base (1). A mounting bracket (3) is fixedly connected to one side of the Z-axis mover of the three-axis walking mechanism (2). A bracket (4) for supporting the colorimeter is fixedly connected to one side of the mounting bracket (3). A rotating shaft (13) is rotatably connected inside the bracket (4). Both ends of the rotating shaft (13) pass through the bracket (4). A micro motor (12) for rotating the rotating shaft (13) is fixedly connected to the upper surface of the bracket (4). A pair of mutually opposing... The three-axis walking mechanism (2) has a fan-shaped plate 1 (14) and a fan-shaped plate 2 (17). The fan-shaped plate 1 (14) has ten round holes (15). Each of the round holes (15) has a transparent film (16) of a different color. The moving parts of the XY axis of the three-axis walking mechanism (2) are fixedly connected to slotted photoelectric sensors (20). The XY axis guide rails of the three-axis walking mechanism (2) are fixedly connected to multiple Z-shaped baffles (21) that cooperate with the slotted photoelectric sensors (20). Multiple color cards (7) are arranged in an array on the upper surface of the base (1).

2. The device for reducing inter-stage differences in a multispectral colorimeter according to claim 1, characterized in that: Multiple pin seats (23) are fixedly connected to the XY axis guide rails of the three-axis walking mechanism (2), and electromagnetic pins (22) that cooperate with the pin seats (23) are fixedly connected to the XY axis movers of the three-axis walking mechanism (2).

3. The device for reducing inter-stage differences in a multispectral colorimeter according to claim 1, characterized in that: Multiple color cards (7) are arranged in a five-row, six-column array. The pins (23) on the XY axis of the three-axis walking mechanism (2) correspond to the five-row, six-column color cards (7) respectively, and the Z-shaped baffles (21) on the XY axis of the three-axis walking mechanism (2) correspond to the five-row, six-column color cards (7) respectively.

4. The device for reducing inter-stage differences in a multispectral colorimeter according to claim 1, characterized in that: A fixing plate (8) is hinged to one side of the card holder (4). A through hole (10) is provided on the fixing plate (8). A locking screw (11) is provided in the through hole (10), and the threaded end of the locking screw (11) is inserted into the card holder (4) and threadedly connected to the card holder (4).

5. The device for reducing inter-stage differences in a multispectral colorimeter according to claim 1, characterized in that: The sector plate (17) has a number of positioning pin holes (18) that are the same as and correspond one-to-one with the round holes (15). The mounting bracket (3) is fixedly connected with an electromagnetic pin (19) that works with the positioning pin holes (18).

6. The device for reducing inter-stage differences in a multispectral colorimeter according to claim 1, characterized in that: The base (1) is provided with a glass plate (5), and the glass plate (5) is attached with a limiting frame (6) that is the same number as the color card (7) and has a corresponding position.

7. The device for reducing inter-stage difference in a multispectral colorimeter according to claim 3, characterized in that: The shape of the color card (7) matches the inner shape of the limiting frame (6), and the thickness of the limiting frame (6) is less than the thickness of the color card (7).

8. The device for reducing inter-stage difference in a multispectral colorimeter according to claim 4, characterized in that: The cavity formed by the card holder (4) and the fixed card plate (8) has a contour groove (9) that matches the shape of the colorimeter.

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