Precise metering and feeding device for raw materials of printing ink

Abstract

The utility model relates to a printing ink raw material accurate metering and feeding device which comprises a support, a mixing tank and a three-way piece, the three-way piece comprises a first pipeline, a second pipeline and a third pipeline, a first electromagnetic valve and a second electromagnetic valve are arranged on the first pipeline and the second pipeline respectively, and a material mixing cavity is formed in the middle of the mixing tank. The lower end of the third pipeline extends into the mixing cavity, the lower end of the mixing tank is a discharging pipe leading to the mixing cavity, a third electromagnetic valve is arranged on the discharging pipe, an external thread is arranged on the outer side of the discharging pipe below the electromagnetic valve, a threaded hole is formed in the upper end of the support, and the discharging pipe is connected into the threaded hole through the external thread. According to the auxiliary feeding device, an auxiliary with an extremely low adding amount can be accurately fed, after the auxiliary is fed, an organic solvent with a relatively large adding amount is adopted as a washing substance, the auxiliary remaining at the second electromagnetic valve can be brought into the mixing cavity, the auxiliary adhering to the wall of the mixing cavity can be brought out as much as possible, the dosage error of the auxiliary is reduced, and the working efficiency is improved. The printing ink proportioning process accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing ink, in particular to a device for accurately metering and adding raw materials of printing ink. Background Art

[0002] Ink is a crucial material for printing. It's composed of resins, pigments, fillers, additives, and organic solvents, forming a viscous, colloidal fluid through uniform mixing and repeated rolling. In most printing ink formulas, additives account for approximately 1.5-5%. However, due to their high viscosity, additives are typically premixed with organic solvents before being added to the mixing tank used to prepare the printing ink. This can lead to varying degrees of additive residue in the delivery pipelines and premixing tanks, resulting in insufficient additives. This has a significant impact on additives with a relatively low additive content, impacting the final printing ink's performance, including viscosity, gloss, water resistance, drying properties, fluidity, transferability, and fixation. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a precise metering and feeding device for raw materials of printing ink, which pre-mixes organic solvents and additives through a mixing tank, and can flush the additives with organic solvents to ensure that the amount of additives added is basically consistent with the formula table.

[0004] The technical solution of the utility model is: a precise metering and feeding device for raw materials of printing ink, comprising a bracket, a mixing tank and a tee, the tee comprising a first pipe, a second pipe and a third pipe, the first pipe and the second pipe are respectively provided with a first solenoid valve and a second solenoid valve, the middle part of the mixing tank is a mixing chamber, the lower end of the third pipe extends into the mixing chamber, the lower end of the mixing tank is a discharge pipe leading to the mixing chamber, the discharge pipe is provided with a third solenoid valve, the outer side of the discharge pipe below the solenoid valve is provided with an external thread, the upper end of the bracket is provided with a threaded hole, the discharge pipe is connected to the threaded hole through the external thread.

[0005] Furthermore, the mixing tank is made of a transparent material, and scale lines are provided on the side of the mixing tank.

[0006] Furthermore, a heating component is provided on the side of the mixing tank.

[0007] Furthermore, the heating assembly includes a heating rod and a heat conducting plate, the heat conducting plate is fixedly connected to the side of the mixing tank, and a mounting hole is provided on the heat conducting plate, and the heating rod can be inserted into the mounting hole.

[0008] Furthermore, the heating assembly also includes a heating ring, the middle portion of the mixing tank is a tapered structure that narrows downward, and the heating ring is arranged on the outside of the tapered structure.

[0009] Furthermore, it also includes a cushion layer, and the conical structure, heating ring, cushion layer and upper end surface of the bracket can be abutted in sequence.

[0010] Furthermore, the cushion layer is a U-shaped structure.

[0011] Furthermore, jacks are provided on both sides of the mixing tank.

[0012] Furthermore, a countersunk hole is provided at the lower end of the bracket.

[0013] Compared with the prior art, the advantages of the present invention are that the premixed organic solvent and additive enter the mixing tank through the first pipe and the second pipe respectively, and under the control of the second solenoid valve, the additive with an extremely low addition amount is accurately added. After the additive addition is completed, a relatively large amount of organic solvent is used as a flushing material, which can not only bring the additive remaining at the second solenoid valve into the mixing chamber, but also bring out the additive adhering to the wall of the mixing chamber as much as possible, thereby reducing the error in the additive dosage and improving the accuracy of the printing ink batching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is an exploded view of the utility model;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a diagram of the use state of the utility model;

[0018] Figure 4 It is a structural diagram of the present utility model.

[0019] Among them: 1. Tee; 101. First pipe; 102. Second pipe; 103. Third pipe; 2. Mixing tank; 201. Conical structure; 202. Jack; 203. Scale line; 204. Mixing chamber; 3. Discharge pipe; 301. External thread; 4. Heat conducting plate; 401. Mounting hole; 5. Heating rod; 6. Heating coil; 7. First solenoid valve; 8. Second solenoid valve; 9. Third solenoid valve; 10. Pad; 11. Bracket; 1101. Threaded hole; 1102. Countersunk hole. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0021] like Figure 1-4 As shown, a precise metering and feeding device for raw materials of printing ink comprises a bracket 11, a mixing tank 2 and a tee 1, wherein the tee 1 comprises a first pipe 101, a second pipe 102 and a third pipe 103, the first pipe 101 and the second pipe 102 are respectively provided with a first solenoid valve 7 and a second solenoid valve 8, the middle part of the mixing tank 2 is a mixing chamber 204, the lower end of the third pipe 103 extends into the mixing chamber 204, the lower end of the mixing tank 2 is a discharge pipe 3 leading to the mixing chamber 204, the discharge pipe 3 is provided with a third solenoid valve 9, the outer side of the discharge pipe 3 below the solenoid valve is provided with an external thread 301, the upper end of the bracket 11 is provided with a threaded hole 1101, and the discharge pipe 3 is connected to the threaded hole 1101 through the external thread 301; the premixed organic solvent and additive enter the mixing tank 2 through the first pipe 101 and the second pipe 102 respectively. Under the control of the second solenoid valve 8, the additive with a very low addition amount is accurately added. After the additive is added, due to the high viscosity of the additive, part of the additive usually adheres to the wall of the mixing chamber 204. At this time, a relatively large amount of organic solvent is used as a flushing agent, which can not only bring the additive remaining at the second solenoid valve 8 into the mixing chamber 204, but also remove the additive adhering to the wall of the mixing chamber 204 as much as possible, thereby reducing the additive dosage error and improving the accuracy of the printing ink batching process.

[0022] In the above embodiment, the mixing tank 2 is made of a transparent material, and a scale line 203 is provided on the side of the mixing tank 2, so that the liquid level and foaming of the organic solvent and the additive can be observed in real time to ensure the smooth progress of the mixing process. A heating component is provided on the side of the mixing tank 2 to heat the organic solvent and the additive, especially the additive with a higher viscosity. Proper heating can improve its fluidity and viscosity, making it more soluble in the organic solvent. The heating component includes a heating rod 5 and a heat conducting plate 4. The heat conducting plate 4 is fixedly connected to the side of the mixing tank 2. The heat conducting plate 4 is provided with a mounting hole 401, and the heating rod 5 can be inserted into the mounting hole 401; the heating rod 5 is connected to an external power supply, and when heating, heat is transferred from the outer wall of the mixing tank 2 to the mixing chamber 204 through the heat conducting plate 4, so that the organic solvent and the additive are heated. The heating assembly also includes a heating coil 6. The middle part of the mixing tank 2 is a tapered structure 201 that narrows downward, and the heating coil 6 is sleeved on the outside of the tapered structure 201. The heating coil 6 makes up for the defect that the heating rod 5 cannot be installed in the lower half of the mixing tank 2, and the heating coil 6 surrounds the tapered structure 201 to provide all-round heating for the tapered structure 201. Under the condition that the internal cavity of the tapered structure 201 is narrowed, the organic solvent and additive mixture with a certain viscosity can be discharged more smoothly.

[0023] This device also includes a cushion layer 10. The conical structure 201, the heating coil 6, the cushion layer 10 and the upper end surface of the bracket 11 can be abutted in sequence; when the lower end of the discharge pipe 3 is locked into the threaded hole 1101, the conical structure 201 and the cushion layer 10 jointly clamp the heating coil 6, and the overall structure is stable, which also ensures that the heat of the heating coil 6 can be smoothly and evenly transferred to the conical structure 201. The cushion layer 10 is a U-shaped structure. The cushion layer 10 can be disassembled and assembled from the side, which is convenient and quick. At the same time, the U-shaped structure reserves a position for the third solenoid valve 9 to avoid mutual interference. The mixing tank 2 is provided with a socket 202 on both sides. When the discharge pipe 3 and the threaded hole 1101 are closely matched, steel rods can be inserted into the sockets 202 on both sides, which is equivalent to lengthening the lever arm, making the mixing tank 2 easier to disassemble and assemble. The lower end of the bracket 11 is provided with a countersunk hole 1102 to facilitate the connection and fixation of the bracket 11.

[0024] Description of the working method of this utility model:

[0025] This device can be installed on the mixing tank in a printing ink production line to directly provide raw material feeding and batching operations for production. It can also be used in R&D experiments to precisely control the amount of additives added, ensuring that the formulated printing ink composition is substantially consistent with the formula table, thereby ensuring the accuracy of the test. When this device is used in a production line, the first pipe 101 and the second pipe 102 are connected to the organic solvent tank and the additive tank respectively. The first solenoid valve 7 and the second solenoid valve 8 can be a one-way valve. The power source for transporting the organic solvent and additive is a gear pump or peristaltic pump to ensure accurate feeding at the source. In the formula table of some printing inks, organic solvents account for about 45%, and additives account for about 2.5%. During production, about half of the volume of organic solvent is added to the mixing chamber 204 through the first pipe 101, and then the additives are added through the second pipe 102. After mixing, the mixture is injected into the mixing tank through the discharge pipe 3; due to the high viscosity of the additives, there are residues at the outlet of the second solenoid valve 8 of the second pipe 102 and the inner wall of the mixing chamber 204. The actual proportion of additives injected into the mixing tank is about 2.3%, which has a great impact on the viscosity, glossiness, water resistance, drying properties, etc. of the finished printing ink. Performance indicators such as fluidity, transferability and fixation will all be affected to a certain extent. At this time, the first pipe 101 is used to pump in the remaining organic solvent in batches. First, the outlet of the second solenoid valve 8 of the second pipe 102 is flushed to basically flush the additive into the mixing chamber 204. Then, by continuously opening and closing the third solenoid valve 9, the mixing chamber 204 is emptied and the organic solvent is repeatedly pumped in batches to flush away the residual additive adhering to the inner wall of the mixing chamber 204, ensuring that the amount of additives in the finished printing ink is basically consistent with the formula table, thereby ensuring the accuracy of the printing ink production ingredients.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for accurately metering and feeding raw materials for printing ink, comprising a bracket, a mixing tank, and a tee, characterized in that: The three-way piece includes a first pipe, a second pipe and a third pipe. The first pipe and the second pipe are respectively provided with a first solenoid valve and a second solenoid valve. The middle part of the mixing tank is a mixing chamber. The lower end of the third pipe extends into the mixing chamber. The lower end of the mixing tank is a discharge pipe leading to the mixing chamber. The discharge pipe is provided with a third solenoid valve. The outer side of the discharge pipe below the solenoid valve is provided with an external thread. The upper end of the bracket is provided with a threaded hole, and the discharge pipe is connected to the threaded hole through the external thread.

2. The precise metering and feeding device for raw materials of printing ink according to claim 1, characterized in that: The mixing tank is made of a transparent material and has scale lines on the side of the mixing tank.

3. The precise metering and feeding device for raw materials of printing ink according to claim 1, characterized in that: A heating component is provided on the side of the mixing tank.

4. The precise metering and feeding device for raw materials of printing ink according to claim 3, characterized in that: The heating assembly includes a heating rod and a heat conducting sheet. The heat conducting sheet is fixedly connected to the side of the mixing tank. The heat conducting sheet is provided with a mounting hole, and the heating rod can be inserted into the mounting hole.

5. The precise metering and feeding device for raw materials of printing ink according to claim 3, characterized in that: The heating assembly further comprises a heating ring. The middle portion of the mixing tank is a tapered structure that narrows downwards, and the heating ring is sleeved on the outside of the tapered structure.

6. The precise metering and feeding device for raw materials of printing ink according to claim 5, characterized in that: It also includes a cushion layer, and the conical structure, the heating ring, the cushion layer and the upper end surface of the bracket can be abutted in sequence.

7. The precise metering and feeding device for raw materials of printing ink according to claim 6, characterized in that: The cushion layer is a U-shaped structure.

8. The precise metering and feeding device for raw materials of printing ink according to claim 1, characterized in that: Sockets are provided on both sides of the mixing tank.

9. The precise metering and feeding device for raw materials of printing ink according to claim 1, characterized in that: A countersunk hole is provided at the lower end of the bracket.

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