Color matching demonstration device

Abstract

The invention discloses a color matching demonstration device, and relates to the technical field of refrigeration equipment. The teaching demonstration device comprises a demonstration main board, a drawing board, a light display board and a display screen display board are fixedly installed on the demonstration main board, the demonstration main board is rotatably installed between two supports, the two supports are fixedly installed on a connecting plate, the drawing board is provided with a cleaning mechanism, a collecting box is fixedly installed above the connecting plate, and the collecting box is arranged below the drawing board. And a discharging mechanism is arranged above the connecting plate and comprises a fixing cylinder movably installed on the connecting plate, and a pigment cylinder is fixedly installed in the fixing cylinder. A connecting rod of the discharging mechanism is provided with scale marks, a worker can accurately control the moving depth of a piston plate through pressing, then the pigment discharging amount is accurately controlled, and non-uniformity is avoided. The drawing board is provided with a cleaning mechanism, automatic cleaning can be achieved after demonstration, waste falls into a collecting box, the board surface is kept clean, and the efficiency and effect of color matching demonstration are effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of refrigeration equipment technology, and more specifically, relates to a color matching demonstration device. Background Technology

[0002] In the field of color theory, basic colors that cannot be further broken down into simpler color components are professionally called primary colors. Primary colors possess unique properties; they can combine to create a rich variety of other colors, yet other colors cannot reverse-engineer the original appearance of primary colors. In the field of art, for example, red, yellow, and blue are explicitly defined as the three primary colors. These three primary colors are like the cornerstones of the color world, possessing powerful mixing capabilities. Through different proportions, they can be mixed to create countless colors, constructing a magnificent and diverse color kingdom. Even more remarkably, when these three primary colors are mixed in a specific way, they ultimately produce pure white. This phenomenon vividly demonstrates the central position and magical characteristics of primary colors in the color system.

[0003] In traditional color matching scenarios, color matching devices have significant limitations. They cannot visually present the complete color matching process; it's like groping in the fog, where operators struggle to observe in real time the dynamic trajectory of colors as they gradually blend and change from their initial state to achieve the target hue. Furthermore, controlling the pigment ratios during color matching is extremely challenging. Due to the lack of precise guidance, operators can only rely on experience to estimate, leading to frequent ratio deviations. This directly results in color matching outcomes that differ significantly from expectations, necessitating multiple sampling and adjustments. This not only wastes a large amount of pigment and time but may also cause the optimal color matching opportunity to be missed due to repeated adjustments, impacting the overall work progress. Summary of the Invention

[0004] In view of the problems in related technologies, the present invention proposes a color matching demonstration device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a color matching demonstration device, comprising a demonstration mainboard on which a drawing board, a light display board, and a display screen are securely mounted. The three functional areas are rationally arranged, facilitating diverse color demonstration operations for users. The demonstration mainboard is mounted between two sturdy supports via a precision rotating mechanism, ensuring flexibility and stability during demonstrations. The two supports are firmly fixed to a connecting plate, forming a stable support structure. The drawing board area is specially equipped with a cleaning mechanism for quick removal of residual paint, keeping the board surface clean. A collection box is fixedly mounted above the connecting plate, cleverly positioned below the drawing board to collect paint dropped during cleaning, preventing environmental pollution. Furthermore, a dispensing mechanism is located above the connecting plate. This mechanism includes a fixed cylinder movably mounted on the connecting plate, inside which a paint cylinder is fixedly installed. A piston plate is slidably mounted inside the paint cylinder, and the precise extrusion of paint is achieved by the up-and-down movement of the piston plate. The piston plate is fixedly connected to the top of the paint cylinder via a telescopic rod, and a return spring is fitted on the telescopic rod to ensure that the piston plate automatically returns to its original position after pressure is released. A connecting rod is also fixedly installed on the top of the piston plate for easy external operation. The pigment cylinder is fixedly connected to the discharge port via a connecting pipe, and the discharge port is located on the fixed cylinder for easy access to the pigment by the user.

[0006] Furthermore, a movable connector is fixedly mounted on one of the brackets, and a lamp holder is fixedly mounted on the movable connector. The lamp holder allows for adjustment of the lamp angle and brightness as needed, providing suitable lighting conditions for the demonstration. The display screen is fixedly equipped with control buttons, facilitating user operation and control of the various functions of the entire device. Simultaneously, a damper is installed between the demonstration mainboard and the two brackets to effectively reduce vibration and noise during rotation, improving the user experience.

[0007] Furthermore, the cleaning mechanism includes a groove formed on the drawing board, inside which a first threaded rod is rotatably mounted. A wiping plate is threadedly connected to the first threaded rod, and the wiping plate is slidably connected inside the groove. The rotation of the first threaded rod drives the wiping plate to move, thereby achieving automatic cleaning of the drawing board. One end of the first threaded rod is fixedly mounted with the output end of a drive motor, which is fixedly mounted on the demonstration mainboard to provide power for the rotation of the first threaded rod.

[0008] Furthermore, one end of the telescopic rod is fixedly installed on the top of the piston plate, and the other end is fixedly installed on the top of the pigment cylinder, ensuring a stable connection between the piston plate and the pigment cylinder. The connecting rod passes through the fixed cylinder and the pigment cylinder and is fixedly connected to the top of the piston plate, allowing the user to control the movement of the piston plate through external operation.

[0009] Furthermore, one end of the connecting pipe is fixedly connected to the bottom of the pigment cylinder, and the other end of the connecting pipe is fixedly connected to the discharge port, forming a complete pigment conveying channel. The discharge port is fixedly installed on the fixed cylinder to ensure that the pigment can be extruded accurately and smoothly.

[0010] Furthermore, a lifting mechanism is provided below the connecting plate. This mechanism includes two movable rods fixedly installed below the connecting plate. The two movable rods are slidably connected inside the two fixed rods, and the height of the connecting plate is adjusted by moving the movable rods up and down. A second threaded rod is rotatably installed inside the two fixed rods, and the two second threaded rods are threadedly connected to the two movable rods respectively. The movement of the movable rods is driven by the rotation of the second threaded rods.

[0011] Furthermore, worm gears are fixedly mounted on the two second threaded rods, and the two worm gears mesh with a worm. The rotation of the worm drives the worm gears and the second threaded rods to rotate synchronously. The worm is rotatably mounted on two fixed rods, and a handle is fixedly mounted on one end for easy manual operation by the user. The handle is rotatably mounted on one of the fixed rods, which is a reasonable design and convenient operation.

[0012] Furthermore, the two fixing rods are fixedly mounted on the support plate, forming a stable bottom support structure. The bottom of the support plate is fixedly equipped with casters, which are self-locking, facilitating the movement and securing of the device. In addition, a storage box is fixedly mounted on the bottom of the connecting plate, which can be used to store paints, tools, and other accessories, improving the device's convenience.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The connecting rod in the dispensing mechanism has scale lines. When the operator presses the connecting rod, they can precisely control the movement depth of the piston plate, thereby accurately controlling the amount of pigment dispensed and avoiding uneven dispensing. The drawing board is equipped with a cleaning mechanism that can automatically clean itself after the demonstration. Waste material falls into the collection box, keeping the board surface clean and improving the efficiency and effect of color matching demonstrations.

[0014] 2. The demonstration motherboard is mounted between two supports via a rotating mechanism, and a damper is installed between the motherboard and the supports to flexibly adjust the angle and ensure smooth rotation, meeting the demonstration needs of different viewing angles. The two supports are firmly fixed to the connecting plate, and there is a lifting mechanism under the connecting plate to adjust the height of the connecting plate to meet the needs of users with different heights. At the same time, the bottom of the fixing rod has a universal wheel with self-locking, which facilitates movement and fixation, providing stable support and flexible use for the device.

[0015] 3. A drawing board is securely mounted on the main board for color matching and drawing operations. The light display board and the display screen work together to provide users with a rich color display experience. The display screen has control buttons, which users can use to control the device. One of the brackets is equipped with a movable connector and a lamp head, which can provide additional lighting and flexibly adjust the angle, enhancing the flexibility and lighting effect of the demonstration. There is also a storage box at the bottom of the connector board, which can be used to store the tools and accessories needed for the demonstration, improving the convenience of the device.

[0016] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an enlarged schematic diagram of point A in the present invention; Figure 3 This is an enlarged schematic diagram of point B in the present invention; Figure 4 This is a cross-sectional view of the fixing cylinder and the pigment cylinder of the present invention; Figure 5 This is a schematic diagram of the back of the present invention; Figure 6 This is an enlarged schematic diagram of point C in the present invention.

[0019] The attached diagram lists the components represented by each number as follows: 1. Demonstration mainboard; 2. Lighting display board; 3. Display screen; 4. Bracket; 5. Connecting plate; 6. Collection box; 7. Fixing cylinder; 8. Paint cylinder; 9. Piston plate; 10. Telescopic rod; 11. Connecting pipe; 12. Discharge port; 13. Movable connector; 14. Lamp head; 15. Control button; 16. Slide groove; 17. First threaded rod; 18. Wiping plate; 19. Drive motor; 20. Return spring; 21. Moving rod; 22. Fixing rod; 23. Second threaded rod; 24. Worm gear; 25. Worm; 26. Handle; 27. Support plate; 28. Casters; 29. ​​Storage box; 30. Drawing board; 31. Connecting rod. Detailed Implementation

[0020] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0021] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the invention.

[0022] Please see Figures 1-6 As shown, this invention is a color matching demonstration device, including a demonstration main board 1. A drawing board 30, a light display board 2, and a display screen 3 are securely mounted on the demonstration main board 1. These modules work together to provide users with a rich color matching display experience. The demonstration main board 1 is mounted between two supports 4 via a rotating mechanism, allowing the entire demonstration board to be flexibly adjusted to meet the needs of demonstrations from different perspectives. The two supports 4 are firmly fixed to a connecting plate 5, providing stable support for the entire device. The drawing board 30 is specially designed with a cleaning mechanism to allow for quick cleaning after the demonstration, keeping the board surface clean. A collection box 6 is fixedly mounted above the connecting plate 5, cleverly positioned below the drawing board 30 to collect waste material cleaned from the drawing board. Furthermore, a discharge mechanism is also provided above the connecting plate 5, which includes a fixed cylinder 7 movably mounted on the connecting plate 5. A pigment cylinder 8 is fixedly installed inside the fixed cylinder 7. A piston plate 9 is slidably installed inside the pigment cylinder 8. The piston plate 9 is fixedly connected to the top of the pigment cylinder 8 via a telescopic rod 10, and a return spring 20 is sleeved on the telescopic rod 10 to ensure that the piston plate 9 can automatically return to its original position after release. A connecting rod 31 is also fixedly installed on the top of the piston plate 9 for manual or automatic control of the piston plate's movement. The pigment cylinder 8 is fixedly connected to the discharge port 12 via a connecting pipe 11. The discharge port 12 is located on the fixed cylinder 7 for convenient use of pigment by the user.

[0023] The working principle of the color matching demonstration device proposed in this invention is as follows: When using the color matching demonstration device, the drawing board 30, which is stably mounted on the demonstration main board 1, is used for color matching and drawing operations. The light display board 2 and the display screen 3 work together to bring users a rich color matching display experience. The demonstration main board 1 is mounted between two supports 4 through a rotating mechanism, which can flexibly adjust the angle of the entire demonstration board to meet the demonstration needs of different viewing angles. The two supports 4 are firmly fixed on the connecting plate 5, providing stable support for the device.

[0024] When pigment needs to be dispensed, the traditional direct dispensing method results in uneven dispensing, requiring multiple samplings. In the dispensing mechanism of this device, the fixed cylinder 7 is movably mounted on the connecting plate 5, and a pigment cylinder 8 is fixed inside it. A piston plate 9 is slidably installed inside the pigment cylinder 8. The piston plate 9 is fixedly connected to the top of the pigment cylinder 8 via a telescopic rod 10. A return spring 20 is sleeved on the telescopic rod 10. A connecting rod 31 is fixed to the top of the piston plate 9, and the surface of the connecting rod is provided with scale lines.

[0025] Workers can observe the scale lines on the connecting rod according to the required amount of pigment, and manually press the connecting rod 31 to move the piston plate 9 downwards inside the pigment cylinder 8. This forces the pigment from the pigment cylinder 8 through the connecting pipe 11 towards the outlet 12 located on the fixed cylinder 7, from which the pigment flows out. By controlling the depth of pressing the connecting rod 31 with reference to the scale lines, the amount of pigment dispensed can be precisely controlled, avoiding uneven dispensing. After dispensing, releasing the connecting rod 31 will cause the piston plate 9 to automatically return to its original position via the return spring 20.

[0026] After the demonstration, any remaining waste on the drawing board 30 can be cleaned using the cleaning mechanism designed on it. The cleaned waste will fall into the collection box 6 located below the drawing board 30 and fixed above the connecting plate 5, keeping the surface of the drawing board 30 clean.

[0027] In one embodiment, to enhance the flexibility and lighting effect of the demonstration, a movable connector 13 is fixedly mounted on one of the brackets 4. This movable connector 13 further securely mounts a lamp holder 14 to provide additional lighting. Simultaneously, control buttons 15 are fixedly mounted on the display panel 3 for convenient user operation and control. Furthermore, a damper is provided between the demonstration mainboard 1 and the two brackets 4 to ensure smooth operation and a comfortable feel during rotation of the demonstration mainboard.

[0028] In one embodiment, for the cleaning mechanism described above, in order to achieve automated cleaning of the drawing board 30, the cleaning mechanism includes a groove 16 formed on the drawing board 30. A first threaded rod 17 is rotatably mounted inside the groove 16, and a wiping plate 18 is threadedly connected to the first threaded rod 17. The wiping plate 18 is slidably connected inside the groove 16. The output end of a drive motor 19 is fixedly mounted at one end of the first threaded rod 17, and the drive motor 19 is fixedly mounted on the demonstration mainboard 1. When the drive motor 19 is started, it drives the first threaded rod 17 to rotate, thereby driving the wiping plate 18 to slide within the groove 16, realizing the automatic cleaning of the drawing board.

[0029] In one embodiment, for the aforementioned telescopic rod 10, in order to ensure the stable movement of the piston plate 9, one end of the telescopic rod 10 is fixedly installed on the top of the piston plate 9, and the other end is fixedly installed on the top of the pigment cylinder 8. Meanwhile, the connecting rod 31 passes through the fixed cylinder 7 and the pigment cylinder 8 and is fixedly connected to the top of the piston plate 9, so that the user or control system can precisely control the position of the piston plate.

[0030] In one embodiment, for the pigment cylinder 8, to ensure smooth pigment flow, one end of a connecting pipe 11 is fixedly connected to the bottom of the pigment cylinder 8, and the other end of the connecting pipe 11 is fixedly connected to the discharge port 12. The discharge port 12 is fixedly installed on the fixed cylinder 7, making it convenient for users to take pigments for color mixing demonstrations.

[0031] The working principle of the color matching demonstration device proposed in this invention is as follows: When the device is working, the drawing board 30, which is stably mounted on the demonstration main board 1, is used for color matching and drawing operations. The light display board 2 and the display screen 3 work together to bring users a rich color matching display experience. The display screen 3 is fixedly mounted with control buttons 15, which users can use to control the device.

[0032] To enhance demonstration flexibility and lighting effects, a movable connector 13 is fixedly mounted on one of the brackets 4. A lamp head 14 is further fixedly mounted on the movable connector 13, providing additional lighting. The movable connector 13 allows for flexible adjustment of the lamp head 14's angle. A damper is installed between the demonstration mainboard 1 and the two brackets 4. When rotating the demonstration mainboard 1 to adjust its angle, the damper ensures smooth rotation with a damped feel, meeting the demonstration needs from different viewing angles. The two brackets 4 are firmly fixed to the connecting plate 5, providing stable support for the entire device.

[0033] When pigment needs to be taken, the connecting rod 31 passes through the fixed cylinder 7 and the pigment cylinder 8 and is fixedly connected to the top of the piston plate 9. The user or control system can precisely control the position of the piston plate 9 by operating the connecting rod 31. One end of the telescopic rod 10 is fixedly installed on the top of the piston plate 9, and the other end is fixedly installed on the top of the pigment cylinder 8, providing support for the stable movement of the piston plate 9. A return spring 20 is sleeved on the telescopic rod 10. When the user presses the connecting rod 31, it causes the piston plate 9 to move downward inside the pigment cylinder 8, pressing the pigment from the connecting pipe 11 fixedly connected to the bottom of the pigment cylinder 8 towards the outlet 12 fixedly installed on the fixed cylinder 7. The pigment flows out from the outlet 12, and the user can take the pigment for color mixing demonstrations. After taking the pigment, the connecting rod 31 is released, and the return spring 20 causes the piston plate 9 to automatically return to its original position.

[0034] After the demonstration, the drive motor 19, fixedly mounted on the demonstration motherboard 1, is activated. The output of the drive motor 19 drives the first threaded rod 17, which is rotatably mounted in the slide groove 16 on the drawing board 30, to rotate. Since the first threaded rod 17 is threadedly connected to a wiping plate 18 that is slidably connected inside the slide groove 16, the rotation of the first threaded rod 17 drives the wiping plate 18 to slide within the slide groove 16, thus achieving automatic cleaning of the drawing board 30. The cleaned-up waste falls into the collection box 6 located below the drawing board 30 and fixed above the connecting plate 5, keeping the surface of the drawing board 30 clean.

[0035] In one embodiment, to meet the demonstration needs of users at different heights, a lifting mechanism is provided below the connecting plate 5. This lifting mechanism includes two movable rods 21 fixedly installed below the connecting plate 5, which are slidably connected to the interior of two fixed rods 22. Second threaded rods 23 are rotatably installed inside the two fixed rods 22, and each of the two threaded rods 23 is threadedly connected to one of the movable rods 21. By rotating the second threaded rods 23, the movable rods 21 can be driven to slide up and down within the fixed rods 22, thereby adjusting the height of the connecting plate 5.

[0036] In one embodiment, to achieve synchronous rotation of the two second threaded rods 23, worm gears 24 are fixedly mounted on the two second threaded rods 23, and the two worm gears 24 mesh with a worm 25. The worm 25 is rotatably mounted on two fixed rods 22, and a handle 26 is fixedly mounted on one end of the worm 25. The handle 26 is rotatably mounted on one of the fixed rods 22. The user only needs to rotate the handle 26 to drive the two second threaded rods 23 to rotate synchronously through the transmission of the worm 25 and the worm gears 24, thereby achieving smooth lifting and lowering of the connecting plate 5.

[0037] In one embodiment, to ensure the stability and mobility of the entire device, the two fixing rods 22 are fixedly mounted on the support plate 27. A caster wheel 28 is fixedly mounted on the bottom of the support plate 27. The caster wheel 28 has a self-locking mechanism, allowing the user to move or fix the device as needed. Furthermore, a storage box 29 is fixedly mounted on the bottom of the connecting plate 5 to store tools and accessories required for the demonstration, improving the device's convenience.

[0038] The working principle of the color matching demonstration device proposed in this invention is as follows: When the device is in operation, the drawing board 30 fixed on the demonstration main board 1 is used for color matching drawing. The light display board 2 and the display screen board 3 work together to provide a rich color matching display experience. Users can operate and control the device through the control button 15 on the display screen board 3. The demonstration main board 1 is mounted between two supports 4 via a rotating mechanism. A damper is provided between the main board 1 and the supports 4 to flexibly adjust the angle and ensure smooth rotation. The two supports 4 are fixed on the connecting plate 5.

[0039] When users at different heights use the device, they can operate the lifting mechanism located below the connecting plate 5. In the lifting mechanism, two movable rods 21, fixedly installed below the connecting plate 5, are slidably connected inside two fixed rods 22. Second threaded rods 23 are rotatably installed inside the two fixed rods 22, and the two second threaded rods 23 are threadedly connected to the two movable rods 21 respectively. Worm gears 24 are fixedly installed on the two second threaded rods 23, and the two worm gears 24 mesh with worms 25 rotatably installed on the two fixed rods 22. A handle 26, rotatably installed on one of the fixed rods 22, is fixedly installed at one end of the worm 25.

[0040] The user rotates handle 26, causing worm gear 25 to rotate. Worm gear 25, through meshing with worm wheel 24, drives two second threaded rods 23 to rotate synchronously. When the second threaded rods 23 rotate, they drive the threaded movable rod 21 to slide up and down within the fixed rod 22, thereby adjusting the height of the connecting plate 5 to meet the demonstration needs of users of different heights.

[0041] Two fixed rods 22 are fixedly mounted on the support plate 27. The bottom of the support plate 27 is fixedly mounted with self-locking casters 28, allowing the user to move or fix the device as needed, ensuring the mobility and stability of the device during use. At the same time, a storage box 29 is fixedly mounted on the bottom of the connecting plate 5, which can be used to store the tools and accessories required for the demonstration, improving the convenience of the device.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The preferred embodiments of the invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. The embodiments selected and specifically described in this specification are intended to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A color matching demonstration device, comprising a demonstration motherboard (1), characterized in that: The demonstration mainboard (1) is fixedly mounted with a drawing board (30), a light display board (2), and a display screen (3). The demonstration mainboard (1) is rotatably mounted between two brackets (4). The two brackets (4) are fixedly mounted on a connecting plate (5). The drawing board (30) is equipped with a cleaning mechanism. A collection box (6) is fixedly mounted above the connecting plate (5). The collection box (6) is located below the drawing board (30). A discharge mechanism is provided above the connecting plate (5). The discharge mechanism includes a fixed cylinder (7) movably mounted on the connecting plate (5). The fixed cylinder (7) has a pigment cylinder (8) fixedly installed inside. The pigment cylinder (8) has a piston plate (9) slidably installed inside. The piston plate (9) is fixedly connected to the top of the pigment cylinder (8) through a telescopic rod (10). The telescopic rod (10) is fitted with a return spring (20). The top of the piston plate (9) is fixedly installed with a connecting rod (31). The surface of the connecting rod (31) is provided with scale lines. The pigment cylinder (8) is fixedly connected to the discharge port (12) through a connecting pipe (11). The discharge port (12) is set on the fixed cylinder (7).

2. The color matching demonstration device according to claim 1, characterized in that, One of the brackets (4) is fixedly equipped with a movable connector (13), the movable connector (13) is fixedly equipped with a lamp head (14), the display panel (3) is fixedly equipped with a control button (15), and a damper is provided between the demonstration motherboard (1) and the two brackets (4).

3. The color matching demonstration device according to claim 2, characterized in that, The cleaning mechanism includes a groove (16) on the drawing board (30), a first threaded rod (17) is rotatably installed inside the groove (16), the first threaded rod (17) is threadedly connected to a wiping plate (18), the wiping plate (18) is slidably connected inside the groove (16), one end of the first threaded rod (17) is fixedly installed with the output end of a drive motor (19), and the drive motor (19) is fixedly installed on the demonstration mainboard (1).

4. The color matching demonstration device according to claim 3, characterized in that, One end of the telescopic rod (10) is fixedly installed on the top of the piston plate (9), and the other end is fixedly installed on the top of the pigment cylinder (8). The connecting rod (31) passes through the fixed cylinder (7) and the pigment cylinder (8) and is fixedly connected to the top of the piston plate (9).

5. A color matching demonstration device according to claim 4, characterized in that, The bottom of the pigment cylinder (8) is fixedly connected to one end of a connecting pipe (11), and the other end of the connecting pipe (11) is fixedly connected to the discharge port (12). The discharge port (12) is fixedly installed on the fixed cylinder (7).

6. The color matching demonstration device according to claim 1, characterized in that, A lifting mechanism is provided below the connecting plate (5). The lifting mechanism includes two movable rods (21) fixedly installed below the connecting plate (5). The two movable rods (21) are slidably connected inside the two fixed rods (22). The two fixed rods (22) are rotatably installed inside the two fixed rods (22). The two second threaded rods (23) are threadedly connected to the two movable rods (21).

7. A color matching demonstration device according to claim 6, characterized in that, Two second threaded rods (23) are fixedly mounted with worm gears (24), and the two worm gears (24) mesh with a worm (25). The worm (25) is rotatably mounted on two fixed rods (22). A handle (26) is fixedly mounted on one end of the worm (25), and the handle (26) is rotatably mounted on one of the fixed rods (22).

8. A color matching demonstration device according to claim 7, characterized in that, Two fixed rods (22) are fixedly installed on the support plate (27). A caster wheel (28) is fixedly installed at the bottom of the support plate (27). The caster wheel (28) has self-locking properties. A storage box (29) is fixedly installed at the bottom of the connecting plate (5).

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