A color material supply device and method for precise supply and program-changing feeding

Abstract

The present invention discloses a colorant supply device for precision feeding and program-changing feeding, comprising: a precision feeding device, a main conveying pipe, and a program-changing colorant supply device; multiple precision feeding devices are provided, each of which is used to provide colorants of different colors; multiple groups of program-changing colorant supply devices are provided, each of which is connected to the precision feeding device, and the program-changing colorant supply device is used to spray the colorant supplied by the precision feeding device, and each group of program-changing colorant supply devices includes a set of control valves for controlling the activation and deactivation of the program-changing colorant supply device; the main conveying pipe is used to connect the precision feeding device and the program-changing colorant supply device. The precision feeding device of the present invention ensures the quantitative and stable feeding of the colorant, so that the amount of colorant sprayed and filled in the texture curve groove is stable and controllable, thereby ensuring stable and controllable product quality.

Description

Technical Field

[0001] The invention belongs to the field of artificial stone production equipment, and in particular relates to a color material supply device and method with precise supply and program-changing feeding. Background Art

[0002] Early artificial stone panels were primarily single-color. With the rapid development of the market, single-color panels have become less appealing to consumers. Currently, artificial stone manufacturers are competing to launch unique multi-color composite panels with natural-looking textures. This has led to the development of highly automated CNC texture-laying machines.

[0003] The CNC texture spreading machine production process involves mixing and stirring the materials for the textured artificial stone substrate, spreading them using a conventional spreading machine, pre-pressing the pre-pressed materials, and then transferring them to the CNC texture spreading machine. The CNC texture spreading machine then pre-selects the texture curves and sets the corresponding tools and pigments for each curve, slots the substrate, and sprays the pigment. After slotting and spraying, the panels are pressed, cured, and subjected to other post-processing. This completes the production process of imitating natural stone texture panels.

[0004] The CNC texture spreading machine imitates the production of natural stone texture plates, mainly using two main forms such as color powder spraying, filling line texture, and combination of line and block texture to imitate natural stone texture patterns.

[0005] There are numerous technical difficulties in replicating natural stone textured panels: 1. The width of the texture lines is rigid. Once the tool for a particular texture line is determined, the width of the entire texture line is fixed, and the texture lacks the smooth width variation of natural stone lines. 2. The color powder sprayed and filled along the CNC texture slots is monotonous. CNC texture spreading machines are equipped with a limited variety of color powders, and each slotting tool is equipped with only one nozzle for spraying and filling the color powder. The color change process within the same nozzle is complex, making it difficult to smoothly superimpose different color powders or achieve smooth color gradients. 3. The boundary between the texture and the substrate after spraying and filling the color powder is unclear. The color powder is spread onto the substrate through the nozzle's airflow, and the small and light particles spread over a wide area, resulting in texture penetration and dispersion. 4. When producing multiple panels with the same texture pattern, the texture effects can vary significantly. This is mainly due to factors such as unstable color supply and fluctuating air pressure, which can cause random variations in color depth and width in the texture pattern. Therefore, at this stage, the improvement of the production technology of CNC texture cloth machine imitating natural stone texture panels is mainly to improve and break through the color preparation and supply technology of imitating natural stone texture colors.

[0006] The patent with publication number CN107638819B discloses a mixed fuel micro-continuous feeding device, including a feeding system and a material mixing system. The feeding system includes a two-stage silo, a drive device and a control device, among which the first silo has a larger volume and provides a source of materials for the second silo. The second silo has a smaller volume, and the materials are continuously output under the action of loosening wind. Continuous feeding is achieved under the combined action of gravity and the high-speed airflow suction of the venturi tube. When the position of the regulating valve, the material height and the conveying air flow rate are constant, the amount of material discharged from the second silo is a fixed value, and then the PID is used to control the speed of the stepper motor to maintain a constant material level, thereby achieving precise feeding. The two materials are tangentially fed into the mixing system under the action of the conveying air. The mixing system includes a two-stage mixing silo, and the two mixings improve the mixing uniformity of the materials. This patent mainly solves the problem of sufficient mixing of the two materials, but the feeding accuracy after mixing is not high. Summary of the Invention

[0007] One of the purposes of the present invention is to provide a colorant supply device with precision supply and program-changing feeding to solve the above-mentioned technical problems. The precision feeding device ensures the quantitative supply and its stability, so that the amount of colorant sprayed and filled in the texture curve groove is stable and controllable, thereby ensuring stable and controllable product quality. At the same time, the number of precision feeding devices and program-changing colorant supply devices can be selected according to texture requirements, and multiple sets of precision feeding devices can respectively provide different types of colorants. Through program settings, different colorants are sprayed out from the powder spraying port of the same powder spraying tube from the program-changing colorant supply device, so that the same texture curve can be combined with different colorants for spraying and filling. At the same time, multiple sets of program-changing colorant supply devices can spray and fill multiple textures, further making the pattern of the plate closer to the natural texture effect.

[0008] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0009] A colorant supply device with precise supply and program-changing feeding, comprising:

[0010] A precision feeding device, wherein a plurality of the precision feeding devices are provided, and the plurality of the precision feeding devices are respectively used to provide colorants of different colors;

[0011] a program-changing colorant supply device, wherein the program-changing colorant supply device is provided in multiple groups, each of which is connected to the precision feeding device, and the program-changing colorant supply device is used to eject the colorant supplied by the precision feeding device, and each group of the program-changing colorant supply device includes a set of control valves for controlling the activation and deactivation of the program-changing colorant supply device;

[0012] A main material delivery pipe is used to connect the precision feeding device and the program-changing colorant supply device.

[0013] Preferably, the precision feeding device includes a storage tank, a precision feeding valve, a powder pump, and a first-level feeding pipe. The feed port of the precision feeding valve is connected to the discharge port of the storage tank, the feed port of the powder pump is connected to the discharge port of the precision feeding valve, one end of the first-level feeding pipe is connected to the discharge port of the powder pump, and the other end is connected to the main feeding pipe; the colorant in the storage tank is transported to the precision feeding valve, and the colorant in the precision feeding valve is transported to the first-level feeding pipe through the powder pump.

[0014] Preferably, the material storage tank is arranged directly above the precision feeding valve, and a solenoid valve is provided at the feed port of the powder pump to control the start-up of the powder pump.

[0015] Preferably, the storage tank includes a storage part and a discharge part from top to bottom, the discharge part is a conical structure, the end with a larger diameter of the discharge part is connected to the storage part, and the end with a smaller diameter of the discharge part is connected to the precision feeding valve, and the discharge port of the storage tank is arranged at the bottom of the discharge part.

[0016] Preferably, the storage portion is a columnar structure or a polyhedron structure, and part or all of the storage portion is made of transparent material, which makes it easy to observe the amount of colorant in the storage tank; the discharge portion is a conical body that becomes smaller downward, which makes it easy for the colorant to flow smoothly and quickly from the discharge port of the storage tank into the precision feeding valve.

[0017] Preferably, one end of each primary feeding pipe is connected to the feed end of the main feeding pipe through a multi-way valve or a multi-way pipe joint.

[0018] As a more preferred embodiment, a control valve is provided on each primary feeding pipe, and the control valve is used to control the colorant to be transported from the respective primary feeding pipe to the main feeding pipe, so as to prevent the colorants transported from different primary feeding pipes from affecting each other.

[0019] Preferably, the precision feed valve includes a valve body and a transmission mechanism disposed in the valve body, the feed port of the precision feed valve is arranged in the upper half of the valve body, the valve body has a cavity for accommodating the transmission mechanism, the feed port of the precision feed valve is arranged above the transmission mechanism, and the discharge port of the precision feed valve is arranged in the lower half of the valve body and placed below the transmission mechanism.

[0020] Preferably, the feed port of the precision feeding valve is arranged on the upper end wall of the valve body, and the discharge port of the precision feeding valve is arranged on the lower end wall of the valve body. The transmission mechanism includes a driving wheel, a driven wheel, a conveyor belt and a driving motor. The output end of the driving motor is connected to the driving wheel, and the conveyor belt connects the driving wheel and the driven wheel. The feed port of the precision feeding valve is arranged above the conveyor belt, and the discharge port of the precision feeding valve is arranged below the conveyor belt. The conveyor belt transports the colorant falling from the feed port of the precision feeding valve to the discharge port of the precision feeding valve.

[0021] The driving motor is a micro motor with a stepless speed regulation function. By adjusting its speed, the driving wheel connected to it is precisely adjusted, thereby adjusting the operating speed of the conveyor belt on the driving wheel. Precise feeding can be achieved according to the actual parameters set by the user.

[0022] Preferably, an air inlet is provided on the upper end wall or side wall of the valve body. The air inlet can provide gas to the powder pump when the powder pump is working, so that the powder pump can deliver compressed gas and colorant to the primary feeding pipe.

[0023] Preferably, each group of the program-changing colorant supply devices includes a powder spraying pipe and a control valve arranged on the powder spraying pipe. The feed ends of the powder spraying pipes in multiple groups of the program-changing colorant supply devices are connected to the discharge ends of the main conveying pipe through a multi-way valve or a multi-way pipe joint, and the control valve is arranged adjacent to the feed end of the powder spraying pipe.

[0024] Preferably, one or more powder spraying ports are provided at the discharge end of the powder spraying tube.

[0025] Preferably, the powder spraying port is arranged downward, and the discharge end of the powder spraying pipe is arranged adjacent to or connected to the cutting tool.

[0026] A second object of the present invention is to provide a colorant supply method with precise supply and program-changing feeding, comprising the following steps:

[0027] Step S1. Input the designed plate texture pattern into the control system of the texture spreading machine and set the relevant characteristic parameters of the spraying and filling colorants for each texture curve;

[0028] Step S2. Set the number of precision feeding devices according to the color type required for the plate, and set the number of program-changing colorant feeding devices according to the number of textures of the plate;

[0029] Step S3. After determining the number of precision feeding devices and program-changing colorant feeding devices in step S2, input colorant into the precision feeding device, and the storage tanks in the multiple precision feeding devices provide colorants of different colors;

[0030] Step S4. The plate is conveyed to the bottom of the program-changing colorant supply device. The colorant in the storage tank then flows through the discharge port at the bottom of the storage tank into the precision supply valve. The precision supply valve delivers the colorant in a precise and quantitative manner to the connected powder pump according to the set delivery parameters.

[0031] Step S5. The powder pump is activated by a solenoid valve, and the colorant in the powder pump is mixed with gas and delivered to the main delivery pipe through the primary feeding pipe connected to the powder pump. The control valve of the program-changing colorant supply device corresponding to the texture to be colored is then opened, and the control valves of the remaining program-changing colorant supply devices are closed, completing the spray filling of the texture to be colored.

[0032] Step S6. According to the texture position of the plate and the color type required by the texture, one or more colors of colorant are transported from the main material conveying pipe to the powder spraying port of the powder spraying pipe of the corresponding program-changing colorant supply device in sequence, and the program-changing colorant supply device corresponding to different textures is called to spray and fill the texture with one or more colors to complete the quantitative and directional supply of colorant.

[0033] Beneficial effects:

[0034] 1. The present invention can effectively ensure the stability of product quality. The precision feeding device ensures the quantitative feeding and its stability, making the amount of colorant sprayed and filled in the texture curve groove stable and controllable, thereby ensuring stable and controllable product quality.

[0035] 2. The present invention makes the production of natural textures more efficient. The number of precision feeding devices and program-variable colorant supply devices is selected according to the texture requirements. Multiple sets of precision feeding devices can provide different types of colorants. Through program settings, different colorants are sprayed from the program-variable colorant supply devices at the powder spraying port of the same powder spraying pipe. This allows the spraying and filling of different colorants on the same texture curve. Simultaneously, multiple sets of program-variable colorant supply devices can spray and fill multiple textures, further making the pattern of the board closer to the effect of simulating natural textures.

[0036] 3. The equipment of the present invention is simpler and more convenient to operate. After determining the texture curve to be produced, the texture curve is imported into the operation control system of the equipment, and the feed amount and colorant type of each curve are pre-set and defined. The equipment will automatically complete the subsequent production process.

[0037] 4. This invention effectively improves production efficiency and reduces production costs. During the repeated production of the same textured board, minimal manual intervention (such as adding colorants, starting and stopping equipment, etc.) is required. For simple texture patterns, spraying and filling colorants on a board takes only 3 to 5 minutes, while complex texture patterns only take 6 to 9 minutes, significantly reducing pattern spraying time. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic structural diagram of a colorant supply device with precise supply and program-changing feeding provided in the first embodiment of the present invention;

[0039] Figure 2 A schematic structural diagram of a precision feeding device in a colorant feeding device with precision feeding and program-changing feeding provided in the first embodiment of the present invention;

[0040] Figure 3 A schematic structural diagram of a precision feeding valve in a colorant feeding device with precision feeding and program-changing feeding provided in the first embodiment of the present invention;

[0041] Figure 4 This is a structural schematic diagram of a program-changing colorant supply device in a colorant supply device with precise supply and program-changing feeding provided in the first embodiment of the present invention.

[0042] Reference numerals

[0043] 1. Precision feeding device; 2. Program-changing colorant feeding device; 3. Storage tank; 4. Precision feeding valve; 41. Valve body; 42. Transmission mechanism; 421. Drive motor; 422. Driving wheel; 423. Driven wheel; 424. Conveyor belt; 5. Powder pump; 6. Primary feeding pipe; 7. Main feeding pipe; 8. Fourth control valve; 9. Fifth control valve; 10. First control valve; 11. Third control valve; 12. Second control valve; 13. First powder spraying pipe; 14. Second powder spraying pipe; 15. Third powder spraying pipe. DETAILED DESCRIPTION

[0044] The technical solution of the present invention is described in detail below with reference to specific embodiments.

[0045] Example 1

[0046] like Figure 1 and 2 As shown, a colorant supply device for precision supply and program-changing feeding comprises: a precision feeding device 1, a main conveying pipe 7 and a program-changing colorant supply device 2; the precision feeding device 1 is provided in plurality, and the plurality of precision feeding devices 1 are respectively used to provide colorants of different colors; the program-changing colorant supply device 2 is provided in multiple groups, and the plurality of groups of program-changing colorant supply devices 2 are all connected to the precision feeding device 1, and the program-changing colorant supply device 2 is used to spray out the colorant supplied by the precision feeding device 1, and each group of the program-changing colorant supply device 2 includes a set of control valves for controlling the start and shut down of the program-changing colorant supply device 2; the main conveying pipe 7 is used to connect the precision feeding device 1 and the program-changing colorant supply device 2.

[0047] like Figure 3 As shown, the precision feeding device 1 includes a storage tank 3, a precision feeding valve 4, a powder pump 5, and a primary feeding pipe 6. The feed port of the precision feeding valve 4 is connected to the discharge port of the storage tank 3, the feed port of the powder pump 5 is connected to the discharge port of the precision feeding valve 4, one end of the primary feeding pipe 6 is connected to the discharge port of the powder pump 5, and the other end is connected to the main feeding pipe 7. The colorant in the storage tank 3 is transported to the precision feeding valve 4, and the colorant in the precision feeding valve 4 is transported to the primary feeding pipe 6 via the powder pump 5. The storage tank 3 is located directly above the precision feeding valve 4, and a solenoid valve is provided at the feed port of the powder pump 5 to control the activation of the powder pump 5.

[0048] The material storage tank 3 comprises a storage portion and a discharge portion from top to bottom. The discharge portion is a tapered structure, with the larger diameter end of the discharge portion connected to the material storage portion, and the smaller diameter end of the discharge portion connected to the precision feed valve 4. The discharge port of the material storage tank 3 is located at the bottom of the discharge portion. The material storage portion is a columnar or polyhedral structure, and part or all of the material storage portion is made of a transparent material, which facilitates observation of the colorant inventory in the material storage tank 3. The discharge portion is a tapered body that tapers downward, which facilitates the smooth and rapid flow of colorant from the discharge port of the material storage tank 3 into the precision feed valve 4.

[0049] One end of each primary feeding pipe 6 in each precision feeding device 1 is connected to the feed end of the main feeding pipe 7 via a multi-way valve or multi-way pipe joint. Each primary feeding pipe 6 is provided with a control valve, which is used to control the colorant delivery from its respective primary feeding pipe 6 to the main feeding pipe 7, preventing the colorant delivery from different primary feeding pipes 6 from interfering with each other.

[0050] like Figure 4 As shown, the precision feed valve 4 includes a valve body 41 and a transmission mechanism placed in the valve body 41. The feed port of the precision feed valve 4 is arranged in the upper half of the valve body 41. The valve body 41 has a cavity for accommodating the transmission mechanism 42. The feed port of the precision feed valve 4 is arranged above the transmission mechanism 42. The discharge port of the precision feed valve 4 is arranged in the lower half of the valve body 41 and is placed below the transmission mechanism 42.

[0051] Further preferably, the feed port of the precision feeding valve 4 is arranged on the upper end wall of the valve body 41, and the discharge port of the precision feeding valve 4 is arranged on the lower end wall of the valve body 41, the transmission mechanism 42 includes a driving wheel 422, a driven wheel 423, a conveyor belt 424 and a driving motor 421, the output end of the driving motor 421 is connected to the driving wheel 422, the conveyor belt 424 connects the driving wheel 422 and the driven wheel 423, the feed port of the precision feeding valve 4 is arranged above the conveyor belt 424, and the discharge port of the precision feeding valve 4 is arranged below the conveyor belt 424, the conveyor belt 424 transports the colorant falling from the feed port of the precision feeding valve 4 to the discharge port of the precision feeding valve 4, and an air inlet is arranged on the upper end wall or side wall of the valve body 41. The air inlet provides air to the powder pump 5 during operation, enabling it to deliver compressed air and colorant to the primary feed pipe 6. The drive motor 421 is a micromotor with stepless speed regulation. By adjusting its speed, the connected driving pulley 422 is precisely adjusted, thereby adjusting the speed of the conveyor belt 424 attached to the driving pulley 422, achieving precise feeding according to user-defined parameters. The storage tank 3 contains spare colorant. The micromotor of the precision feed valve 4 connected to it operates, driving the driving pulley 422 and the belt, delivering the colorant to the powder pump 5. When the solenoid valve controlling the operation of the powder pump 5 is activated, the negative pressure generated by the compressed air entering the powder pump 55 pushes the colorant into the primary feed pipe 6.

[0052] Each set of program-changing colorant supply devices 2 includes a powder spraying tube and a control valve disposed on the powder spraying tube. The feed ends of the powder spraying tubes in multiple sets of program-changing colorant supply devices 2 are connected to the discharge ends of the main conveying pipe 7 via a multi-way valve or multi-way pipe joint. The control valve is disposed adjacent to the feed end of the powder spraying tube. The discharge end of the powder spraying tube is provided with one or more powder spraying ports. The powder spraying ports are disposed downward, and the discharge end of the powder spraying tube is disposed adjacent to or connected to the cutting tool.

[0053] Specifically, such as Figure 3As shown, this embodiment is equipped with two sets of precision feeding devices 1 and three sets of program-changing colorant supply devices 2. The two sets of precision feeding devices 1 store colorant A and colorant B respectively. The two sets of precision feeding devices 1 are arranged in parallel and connected to the feed end of the main conveying pipe 7 through a primary feed pipe 6. The two primary feed pipes 6 are respectively equipped with a fourth control valve 8 and a fifth control valve 9. The three sets of program-changing colorant supply devices 2 are all connected to the feed and discharge ends of the main conveying pipe 7 through powder spray pipes. The three sets of program-changing colorant supply devices 2 respectively include a first control valve 10 and a first powder spray pipe 13, a second control valve 12 and a second powder spray pipe 14, and a third control valve 11 and a third powder spray pipe 15. When color A is to be sprayed on the texture of the board, the powder pump 5 generates compressed air to transport colorant A to the closely connected primary feed pipe 6. The control program opens the fourth control valve 8 and closes the fifth control valve 9. The colorant passes through the primary feed pipe 6 and the main conveying pipe 7 and is discharged to the discharge end of the main conveying pipe 7. According to program design 1, the first control valve 10 is opened, while the second and third control valves 12 and 11 are closed, and the colorant is delivered to the first powder spraying pipe 13. According to program design 2, the second control valve 12 is opened, while the first and third control valves 10 and 11 are closed, and the colorant is delivered to the second powder spraying pipe 14. According to program design 3, the third control valve 11 is opened, while the first and second control valves 10 and 12 are closed, and the colorant is delivered to the third powder spraying pipe 15. When the stripes on the board need to be filled with color B, the compressed air in the powder pump 5 delivers color B to the closely connected primary feed pipe 6. The program opens the fifth control valve 9 and closes the fourth control valve 8. The colorant is then delivered through the shared main feed pipe 7 to the powder spraying pipes, whose opening and closing are controlled by the first, second, and third control valves 10, 12, and 11, respectively. The subsequent program control is the same as above.

[0054] The colorant supply device provided in this embodiment, which provides precise supply and program-controlled feeding, is a core component and key structure of the CNC texture distribution machine. The specific working process in the actual application of the CNC texture distribution machine is as follows: the designed plate texture pattern is input into the control system of the CNC texture distribution machine, and the relevant characteristics of the spraying and filling colorants for each texture curve are set:

[0055] 1. Set up the powder spraying tubes. The first, second, and third powder spraying tubes 13, 14, and 15 correspond to different textured tool types. Once the powder spraying tubes are set up, the program changes the powder spraying tubes in the colorant supply device 2 to become the designated delivery channels for the selected colorant.

[0056] 2. Set the colorant. Each texture curve is pre-set to call the colorant. Call the colorant A in the precision feeding device 1 that stores colorant A, or call the colorant B in the precision feeding device 1 that stores colorant B.

[0057] 3. Set the system processing speed, air pressure and the amount of colorant supplied by the precision feed valve 4, etc.

[0058] The pre-pressed sheet material to be CNC textured is transported to the processing position of the CNC texture feeding machine, the starting point of the processing is adjusted, and the CNC texture processing begins. After the sheet material is CNC textured by the color material supply device with precise feeding and program-changing feeding of this embodiment, the sheet material is transported to the next processing station.

[0059] Example 2

[0060] This embodiment only describes the differences from the above embodiment. In this embodiment, an observation window for observing the movement of the transmission mechanism 42 is provided on the side wall of the valve body 41. The observation window is closed with a transparent material, which makes it easy to observe the amount of colorant in the valve body 41 and the transportation of the colorant in real time.

[0061] Example 3

[0062] A colorant supply method with precise supply and program-changing feeding includes the following steps:

[0063] Step S1. Input the designed plate texture pattern into the texture spreading machine's control system and set the relevant characteristic parameters of the spraying and filling colorant for each texture curve;

[0064] Step S2. Set the number of precision feeding devices 1 according to the type of color required for the plate, and set the program to change the number of colorant supply devices 2 according to the number of textures of the plate;

[0065] Step S3. After determining the number of the precision feeding device 1 and the program-changing colorant feeding device 2 in step S2, input the colorant into the precision feeding device 1, and the storage tanks 3 in the multiple precision feeding devices 1 provide colorants of different colors;

[0066] Step S4. The plate is conveyed below the program-changing colorant supply device 2. The colorant in the storage tank 3 then flows through the discharge port at the bottom of the storage tank 3 into the precision supply valve 4. The precision supply valve 4 delivers the colorant in a precise and quantitative manner to the connected powder pump 5 according to the set delivery parameters.

[0067] Step S5. The powder pump 5 is activated by the solenoid valve, and the colorant in the powder pump 5 is mixed with the gas and delivered to the main delivery pipe 7 through the primary feeding pipe connected to the powder pump 5. The control valve of the program-changing colorant supply device 2 corresponding to the texture to be colored is then opened, and the control valves of the remaining program-changing colorant supply devices 2 are closed, completing the spray filling of the texture to be colored.

[0068] Step S6. Based on the texture position of the board and the color type required by the texture, one or more colors of colorant are transported from the main conveying pipe 7 to the powder spraying port of the corresponding program-changing colorant supply device 2. The program-changing colorant supply device 2 corresponding to each texture is called to spray and fill the texture with one or more colors, completing the quantitative and targeted supply of colorant.

[0069] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A color material supply device with precise feeding and program-changing feeding, characterized in that: include: A precision feeding device (1), wherein a plurality of the precision feeding devices (1) are provided, and the plurality of the precision feeding devices (1) are respectively used to provide colorants of different colors; A program-changing colorant supply device (2), wherein the program-changing colorant supply device (2) is provided in a plurality of groups, and the plurality of groups of the program-changing colorant supply devices (2) are all connected to the precision feeding device (1), and the program-changing colorant supply device (2) is used to eject the colorant supplied by the precision feeding device (1), and each group of the program-changing colorant supply device (2) includes a set of control valves for controlling the start and stop of the program-changing colorant supply device (2); A main conveying pipe (7), the main conveying pipe (7) is used to connect the precision feeding device (1) and the program-changing colorant supply device (2); The precision feeding device (1) comprises a storage tank (3), a precision feeding valve (4), a powder pump (5), and a primary feeding pipe (6); the feed port of the precision feeding valve (4) is connected to the discharge port of the storage tank (3); the feed port of the powder pump (5) is connected to the discharge port of the precision feeding valve (4); one end of the primary feeding pipe (6) is connected to the discharge port of the powder pump (5), and the other end is connected to the main feeding pipe (7); the colorant in the storage tank (3) is transported to the precision feeding valve (4), and the colorant in the precision feeding valve (4) is transported to the primary feeding pipe (6) through the powder pump (5); Each set of the program-changing colorant supply devices (2) comprises a powder spraying pipe and a control valve arranged on the powder spraying pipe, and the feed ends of the powder spraying pipes in the multiple sets of the program-changing colorant supply devices (2) are connected to the discharge ends of the main conveying pipe (7) via a multi-way valve or a multi-way pipe joint; One end of the first-level feeding pipe in each precision feeding device is connected to the feed end of the main feeding pipe through a multi-way valve or a multi-way pipe joint; a control valve is provided on each first-level feeding pipe, which is used to control the colorant to be transported from its respective first-level feeding pipe to the main feeding pipe.

2. The colorant supply device according to claim 1, wherein: The storage tank (3) comprises a storage portion and a discharge portion from top to bottom, the storage portion is made of transparent material, the discharge portion is a conical structure, the end of the discharge portion with a larger diameter is connected to the storage portion, and the end of the discharge portion with a smaller diameter is connected to the precision feed valve (4), and the discharge port of the storage tank (3) is arranged at the bottom of the discharge portion.

3. The colorant supply device according to claim 1, wherein: The precision feeding valve (4) includes a valve body (41) and a transmission mechanism disposed in the valve body (41); the feed port of the precision feeding valve (4) is arranged in the upper half of the valve body (41); the valve body (41) has a cavity for accommodating the transmission mechanism (42); the feed port of the precision feeding valve (4) is arranged above the transmission mechanism (42); and the discharge port of the precision feeding valve (4) is arranged in the lower half of the valve body (41) and disposed below the transmission mechanism (42).

4. The colorant supply device according to claim 3, wherein: The feed port of the precision feeding valve (4) is arranged on the upper end wall of the valve body (41), and the discharge port of the precision feeding valve (4) is arranged on the lower end wall of the valve body (41). The transmission mechanism (42) includes a driving wheel (422), a driven wheel (423), a conveyor belt (424) and a driving motor (421). The output end of the driving motor (421) is connected to the driving wheel (422), and the conveyor belt (424) connects the driving wheel (422) and the driven wheel (423). The feed port of the precision feeding valve (4) is arranged above the conveyor belt (424), and the discharge port of the precision feeding valve (4) is arranged below the conveyor belt (424). The conveyor belt (424) transports the colorant falling from the feed port of the precision feeding valve (4) to the discharge port of the precision feeding valve (4).

5. The colorant supply device according to claim 3 or 4, characterized in that: An air inlet is provided on the upper end wall or the side wall of the valve body (41).

6. The colorant supply device according to claim 1, wherein: The discharge end of the powder spraying pipe is provided with one or more powder spraying ports.

7. A colorant supply method for performing precise supply and program-changing feeding by a colorant supply device, wherein the colorant supply device is the colorant supply device according to any one of claims 1 to 6, characterized in that: The steps include: Step S1. Input the designed plate texture pattern into the control system of the texture spreading machine and set the relevant characteristic parameters of the spraying and filling colorants for each texture curve; Step S2. Set the number of precision feeding devices according to the color types required by the plate texture, and set the number of program-changing colorant feeding devices according to the number of plate textures; Step S3. After determining the number of precision feeding devices and program-changing colorant feeding devices in step S2, input colorant into the precision feeding device, and the storage tanks in the multiple precision feeding devices store colorants of different colors; Step S4. The plate is conveyed to the bottom of the program-changing colorant supply device. The colorant in the storage tank then flows into the precision supply valve through the discharge port at the bottom of the storage tank. The precision supply valve delivers the colorant in a precise and quantitative manner to the powder pump connected thereto according to the set delivery parameters. Step S5. The powder pump is activated by a solenoid valve, and the colorant in the powder pump is mixed with the gas and then delivered to the main delivery pipe through the primary feeding pipe connected to the powder pump. The control valve of the program-changing colorant supply device corresponding to the texture to be colored is then opened, and the control valves of the remaining program-changing colorant supply devices are closed, completing the spray filling of the texture to be colored. Step S6. According to the texture position of the plate and the color type required by the texture, one or more colors of colorant are transported from the main material conveying pipe to the powder spraying port of the powder spraying pipe of the corresponding program-changing colorant supply device in sequence, and the program-changing colorant supply device corresponding to different textures is called to spray and fill the texture with one or more colors to complete the quantitative and directional supply of colorant.

Images