Automatic dye liquor batching system and batching method for laboratory

Abstract

The invention provides an automatic dye liquor batching system for a laboratory and a batching method.The automatic batching system comprises a dye liquor centralized storage device, a dye liquor conveying device, a color paste weighing device and a PLC, dye liquor in a dye liquor bottle is immersed in constant-temperature water through the dye liquor centralized storage device, the dye liquor is stored at the proper temperature, and the dye liquor conveying device conveys the dye liquor to the PLC; the dye liquor can be smoothly conveyed, the dye liquor with different color numbers can keep the same dissolving property, and the problem that the batch difference of color light of a small sample is large due to the change of an operation environment is solved. The batching system can be used for automatically conveying quantitative color paste and is suitable for preparing a small amount of small sample color paste in a laboratory. By combining with a batching method, accurate quantitative conveying can be realized, meanwhile, the conveying efficiency is ensured, the weighing error is effectively controlled, and the batch difference is reduced.

Description

Technical Field

[0001] The invention belongs to the field of cloth printing and dyeing equipment, and in particular relates to an automatic dyeing liquid batching system and a batching method for a laboratory. Background Art

[0002] Real wax batik cloth is a printing product that uses rosin, paraffin, beeswax, etc. as anti-printing media. Its printing style is rough, the color is bright, the wax pattern is fine and natural, the pattern is realistic, and the front and back are consistent. It is deeply loved by the African people. With the development of the market, people's demand level continues to increase, and a large number of new flower patterns and new style products have become the mainstream of production. In order to adapt to market demand and increase product competitiveness, enterprises need to develop new products according to popular styles, so the workload of proofing and imitation in the laboratory has increased dramatically. In the prior art, the proofing and imitation work of the laboratory mostly relies on manual operation. The operator needs to take out the dye from the dye storage tank of different color numbers, and accurately weigh it according to the design requirements, and transfer the quantitative dye of different color numbers to the mixing cup. The manual operation efficiency is low and mistakes often occur in a hurry; the amount of sample color paste is small each time, and the amount of dye added for each color number is small. The weighing error is uncontrollable, resulting in large differences in batches of sample color paste, which cannot meet production needs. Summary of the invention

[0003] Aiming at the technical problems of large manual workload and large error in the mixing of small sample color pastes during proofing in the laboratory of a printing and dyeing enterprise in the prior art, the present invention proposes an automatic and accurate laboratory dyeing liquid automatic batching system and batching method.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] An automatic dye batching system for a laboratory includes a dye centralized storage device, a dye conveying device, a color paste weighing device and a PLC controller. The dye centralized storage device includes a water tank, a plurality of dye bottle placement holes are arranged in the water tank, and dye bottles are installed in the dye bottle placement holes. Constant temperature water is contained in the water tank;

[0006] The dye liquid conveying device comprises a dye liquid conveying pipe, an infusion pump and a centralized discharge nozzle, wherein the centralized discharge nozzle comprises an orifice plate, a plurality of through holes are arranged on the orifice plate, a pipeline nozzle is arranged at the upper end of the through hole, and a discharge nozzle is connected to the lower end of the through hole; the liquid inlet of the infusion pump is connected to the corresponding dye liquid bottle through the dye liquid conveying pipe, and the liquid outlet of the infusion pump is connected to the corresponding pipeline nozzle through the dye liquid conveying pipe;

[0007] The color paste weighing device includes a weighing device located below the centralized discharge nozzle, and a slurry mixing cup is placed on the weighing device;

[0008] The infusion pump is electrically connected to the PLC controller, and the PLC controller and the weighing device are both communicatively connected to the host computer.

[0009] Preferably, the dye bottle is numbered.

[0010] Preferably, the color paste weighing device comprises a weighing box, a weighing platform is arranged in the weighing box, and the weighing device is placed on the weighing platform.

[0011] Preferably, an infusion pump mounting frame is further included, on which the infusion pumps are arranged in sequence, and numbers corresponding to the dye bottles are provided on the infusion pumps.

[0012] Preferably, the discharge nozzle is fixed on the mounting frame via a discharge nozzle bracket.

[0013] Preferably, the dye solution centralized storage device comprises a water inlet pipe and a water outlet pipe connected to a water tank, a temperature sensor and a liquid level meter are arranged in the water tank, and a display screen and an adjustment button are installed on the side wall of the water tank.

[0014] Preferably, the infusion pump is a peristaltic pump.

[0015] Preferably, the discharge nozzle is transparent and has a tapered lower end.

[0016] The present invention also provides a method for automatically dispensing dye solution for a laboratory, comprising the following steps:

[0017] Input the type and amount of dye required for the sample color paste to be configured into the host computer. The host computer calculates the actual amount of each dye to be added based on the stored dye concentration information.

[0018] The PLC controller controls the corresponding peristaltic pumps of the corresponding dye bottles to start and transport the dye into the mixing cup in turn. The flow adjustment process of the peristaltic pump during a single discharge process is as follows:

[0019] Set the target discharge quantity Q0 and the real-time discharge quantity Q t , the allowable error E of the discharge end point, then in a discharge process, the real-time remaining discharge quantity Q1=Q0-Q t

[0020] Set the peristaltic pump safe discharge value M1. When Q1≥M1, the PLC controller controls the peristaltic pump to be continuously turned on, and controls its voltage to be linearly positively correlated with Q1; when Q1<M1, the PLC controller controls the peristaltic motor to be intermittently turned on, and the time interval T between two conductions is linearly positively correlated with Q1; when Q1 is less than or equal to E value, the discharge ends.

[0021] Preferably, after a single discharge is completed, the PLC controller controls the peristaltic pump to reverse and empty the residual dye solution in the discharge nozzle.

[0022] Compared with the prior art, the advantages and positive effects of the present invention are:

[0023] The laboratory dye automatic batching system of the present invention can realize automatic delivery of quantitative color paste through a dye centralized storage device, a dye delivery device, a color paste weighing device and a PLC controller, and is suitable for preparing a small amount of sample color paste in the laboratory. The dye in the dye bottle is immersed in constant temperature water, so that the dye is stored at a suitable temperature, and dyes of different color numbers maintain the same solubility, which is convenient for smooth delivery of the dye, and avoids the problem of large differences in sample color batches caused by changes in the operating environment.

[0024] The automatic dyeing method for a laboratory can achieve accurate quantitative feeding, while ensuring feeding efficiency, effectively controlling weighing errors, and reducing batch differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a dye centralized storage device of the dye automatic batching system for laboratory use of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of a color paste weighing device of the automatic dyeing system for laboratory use of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the discharge nozzle of the automatic dyeing liquid batching system for the laboratory of the present invention;

[0028] In the above figures: 1. dye liquid centralized storage device; 11. box; 12. temperature display screen; 13. temperature adjustment button; 14. water tank; 15. horizontal partition; 16. dye liquid bottle; 17. water inlet pipe; 18. water outlet pipe; 2. dye liquid delivery pipe; 3. centralized discharge nozzle; 31. orifice plate; 32. pipeline nozzle; 33. discharge nozzle; 4. weighing box; 41. weighing platform; 42. mounting frame; 5. weighing device; 6. slurry mixing cup. DETAILED DESCRIPTION

[0029] In order to better understand the present invention, a detailed description is given below in conjunction with the accompanying drawings and embodiments.

[0030] Example 1

[0031] An automatic dyeing system for a laboratory includes a dyeing centralized storage device 1, a dyeing conveying device, a color paste weighing device 5 and a PLC controller. Figure 1As shown, the dye centralized storage device 1 includes a box 11, a temperature display screen 12 is installed on the front side of the box 11, and a temperature adjustment button 13 and a power switch are arranged below the temperature display screen 12. A water tank 14 is arranged on the upper part of the box 11, and a horizontal partition 15 is installed in the water tank 14. A plurality of dye bottle 16 placement holes are arranged in sequence on the horizontal partition 15, and a dye bottle 16 is installed in the dye bottle 16 placement hole. In this embodiment, the dye bottle 16 is a long cylindrical plastic bottle of 5cm*5cm*40cm, and each dye bottle 16 contains a dye mother liquor of different color numbers; in order to distinguish the dye bottles 16 of different color numbers, each dye bottle 16 is provided with a number. Constant temperature water is contained in the water tank 14, and a temperature sensor for detecting the temperature of the constant temperature water and a liquid level meter for detecting the water level are installed in the water tank 14. In order to facilitate the water supply to the water tank 14, an inlet pipe 17 and an outlet pipe 18 connected to the water tank 14 are also provided, and a solenoid valve is installed on the inlet pipe 17 and the outlet pipe 18. In order to keep the water tank 14 with constant temperature water, the water pump can continuously pump hot water from the inlet pipe 17, and the hot water is led out from the outlet pipe 18 to keep the constant temperature water flowing. An electric heating network can also be set at the bottom of the water tank 14, and the water in the water tank 14 is heated by the electric heating network. The solenoid valve, temperature sensor, liquid level meter, electric heating network and temperature display screen 12 are all electrically connected to the PLC controller, and the PLC controller controls the electric heating network to heat the constant temperature water according to the set temperature to realize a constant temperature water bath. At the same time, the PLC controller keeps the water level in the water tank 14 within a preset range according to the water level value detected by the liquid level meter, ensuring that the dye in the dye bottle 16 is immersed in the constant temperature water. The dye is stored at a suitable constant temperature, and the dyes of different color numbers all maintain the same solubility, which is convenient for the smooth transportation of the dye and the accurate preparation of small sample color paste.

[0032] like Figure 2 , Figure 3 As shown, the dye liquor conveying device comprises a dye liquor conveying pipe 2, several infusion pumps and a centralized discharge nozzle 3. The centralized discharge nozzle 3 comprises an orifice plate 31, on which several through holes arranged in sequence are arranged, a pipeline nozzle 32 is arranged at the upper end of the through hole, and a discharge nozzle 33 is connected at the lower end of the through hole, and the discharge nozzle 33 is transparent and tapered at the lower end. In this embodiment, the infusion pump adopts a small DC peristaltic pump with a rated voltage of 12v. This type of peristaltic pump is easy to control electrically, and can be forward or reverse, and its flow rate increases with the increase of the applied voltage, and the real-time delivery flow rate can be controlled by a PLC controller. The liquid inlet of each peristaltic pump is connected to the corresponding dye liquor bottle 16 through the dye liquor conveying pipe 2, and the liquid outlet of the peristaltic pump is connected to the corresponding pipeline nozzle 32 through the dye liquor conveying pipe 2. All peristaltic pumps share one power supply, the positive poles of which are connected in series, and the negative poles are electrically connected to the PLC controller. At the same time, the PLC controller is connected to the host computer for communication. The PLC controller controls whether each peristaltic pump is turned on and started according to the control signal of the host computer.

[0033] The color paste weighing device 5 includes a weighing box 4, which includes a weighing platform 41. A peristaltic pump mounting frame 42 is arranged above the weighing platform 41. The peristaltic pumps are arranged on the mounting frame 42 in sequence, and the infusion pump is provided with a number corresponding to the dye bottle 16. A weighing device 5 is placed on the weighing platform 41, and a slurry mixing cup 6 for receiving the dye is placed on the weighing device 5. The discharge nozzle 33 is fixed on the mounting frame 42 through the discharge nozzle 33 bracket, and the weighing device 5 and the slurry mixing cup 6 are located directly below the discharge nozzle 33. In this embodiment, the weighing device 5 uses an electronic balance with an accuracy of one thousandth of a gram. The electronic balance is connected to the host computer through a 485 port, and the weighing value can be transmitted to the host computer in real time.

[0034] Example 2

[0035] In order to accurately prepare small sample color paste, this embodiment provides a method for automatically mixing dye solution for laboratory use, comprising the following steps:

[0036] Input the type and amount of dye required for the sample color paste to be configured into the host computer. The host computer calculates the actual amount of each dye to be added based on the dye concentration information pre-stored in the database.

[0037] Place the dye cup on the weighing device, then click the start button. The PLC controller controls the corresponding peristaltic pumps of the required dye bottles to start in sequence and transport the dye into the mixing cup.

[0038] In order to ensure the discharge accuracy and improve the discharge speed, the flow adjustment process of the peristaltic pump during a single discharge is as follows:

[0039] Set the target discharge quantity Q0 and the real-time discharge quantity Q t , the allowable error E of the discharge end point, then in a discharge process, the real-time remaining discharge quantity Q1=Q0-Q t ;

[0040] Set the peristaltic pump safe discharge value M1. When Q1≥M1, the PLC controller controls the peristaltic pump to be continuously turned on, and controls the peristaltic pump drive voltage to be linearly positively correlated with Q1, that is, the larger the Q1, the larger the drive voltage, and vice versa, the smaller the applied drive voltage. At the same time, ensure that the maximum voltage cannot be higher than the rated working voltage, and the minimum value should be able to ensure the normal operation of the peristaltic pump. When Q1<M1, the PLC controller controls the peristaltic motor to be intermittently turned on, so that the peristaltic pump is in the "inching" state, that is, the peristaltic pump motor is instantly given an on-off process of the conduction voltage, so that the peristaltic pump can only pump out a very small amount of dye liquid. By adjusting the voltage and on-off time of this process, the nozzle can drip a drop of dye liquid every three point-injection processes). In the point-injection state, the dripping speed of the dye liquid is controlled by controlling the interval time between two adjacent inching processes, that is, the time T between two conduction processes is linearly positively correlated with Q1. The larger the Q1, the shorter the interval time. When Q1 is less than or equal to the E value, the discharge ends.

[0041] After a single discharge, in order to prevent the dye in the material tube from dripping under the action of gravity, the PLC system switches the positive and negative poles of the power supply and controls the peristaltic pump to reverse for a few seconds to empty the residual dye in the discharge nozzle. Finally, the positive and negative poles of the power supply are switched to prepare for the next dye delivery.

[0042] The laboratory dye automatic batching system of the present invention can realize automatic delivery of quantitative color paste through a dye centralized storage device, a dye delivery device, a color paste weighing device and a PLC controller, and is suitable for the laboratory to prepare a small amount of small sample color paste. The dye in the dye bottle is immersed in constant temperature water, so that the dye is stored at a suitable temperature. Dyes of different color numbers all maintain the same solubility, which is convenient for smooth delivery of the dye and avoids the problem of large differences in small sample color batches caused by changes in the operating environment. The combined batching method can achieve accurate quantitative feeding, while ensuring feeding efficiency, effectively controlling weighing errors, and reducing batch differences.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An automatic dyeing system for laboratory use, characterized in that: It includes a dye centralized storage device, a dye conveying device, a color paste weighing device and a PLC controller. The dye centralized storage device includes a water tank, a plurality of dye bottle placement holes are arranged in the water tank, dye bottles are installed in the dye bottle placement holes, and constant temperature water is contained in the water tank; The dye liquid conveying device comprises a dye liquid conveying pipe, an infusion pump and a centralized discharge nozzle, wherein the centralized discharge nozzle comprises an orifice plate, a plurality of through holes are arranged on the orifice plate, a pipeline nozzle is arranged at the upper end of the through hole, and a discharge nozzle is connected to the lower end of the through hole; the liquid inlet of the infusion pump is connected to the corresponding dye liquid bottle through the dye liquid conveying pipe, and the liquid outlet of the infusion pump is connected to the corresponding pipeline nozzle through the dye liquid conveying pipe; The color paste weighing device includes a weighing device located below the centralized discharge nozzle, and a slurry mixing cup is placed on the weighing device; The infusion pump is electrically connected to the PLC controller, and the PLC controller and the weighing device are both communicatively connected to the host computer.

2. The automatic dyeing system for laboratory use according to claim 1, characterized in that: The dye bottle is provided with a number.

3. The automatic dyeing system for laboratory use according to claim 1, characterized in that: The color paste weighing device comprises a weighing box, a weighing platform is arranged in the weighing box, and the weighing device is placed on the weighing platform.

4. The automatic dyeing system for laboratory use according to claim 2, characterized in that: It also includes an infusion pump mounting frame, on which the infusion pumps are arranged in sequence, and the infusion pumps are provided with numbers corresponding to the dye bottles.

5. The automatic dyeing system for laboratory use according to claim 4, characterized in that: The discharge nozzle is fixed on the mounting frame through a discharge nozzle bracket.

6. The automatic dyeing system for laboratory use according to claim 1, characterized in that: The dye liquor centralized storage device comprises a water inlet pipe and a water outlet pipe connected to a water tank, a temperature sensor and a liquid level meter are arranged in the water tank, and a display screen and an adjustment button are installed on the side wall of the water tank.

7. The automatic dyeing system for laboratory use according to claim 1, characterized in that: The infusion pump is a peristaltic pump.

8. The automatic dyeing system for laboratory use according to claim 1, characterized in that: The discharge nozzle is transparent and has a tapered lower end.

9. A method for automatically dispensing dye solution for laboratory use, characterized in that: The following steps are involved: Input the type and amount of dye required for the sample color paste to be configured into the host computer. The host computer calculates the actual amount of each dye to be added based on the stored dye concentration information. The PLC controller controls the corresponding peristaltic pumps of the corresponding dye bottles to start and transport the dye into the mixing cup in turn. The flow adjustment process of the peristaltic pump during a single discharge process is as follows: Set the target discharge quantity Q0 and the real-time discharge quantity Q t , the allowable error E of the discharge end point, then in a discharge process, the real-time remaining discharge quantity Q1=Q0-Q t ; Set the peristaltic pump safe discharge value M1. When Q1≥M1, the PLC controller controls the peristaltic pump to be continuously turned on, and controls its voltage to be linearly positively correlated with Q1; when Q1<M1, the PLC controller controls the peristaltic motor to be intermittently turned on, and the time interval T between two conductions is linearly positively correlated with Q1; when Q1 is less than or equal to E value, the discharge ends.

10. A method for automatically dispensing dye solution for laboratory use, characterized in that: After a single discharge is completed, the PLC controller controls the peristaltic pump to reverse and empty the residual dye liquid in the discharge nozzle.

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