Constant-temperature ink supply device of offset press

Abstract

The constant-temperature ink supply device comprises a constant-temperature ink box, a box cover capable of being opened or closed, an oil filling port and an ink outlet are arranged at the top of the constant-temperature ink box, an ink supply pump is arranged on the ink outlet and connected with the offset press through an ink supply pipe system, and a heating mechanism is arranged at the bottom in the constant-temperature ink box. And the heating mechanism and the ink supply pump are connected with the PLC. According to the utility model, the integrated design is adopted, the structure is simple and compact, and the use convenience is high; full-automatic intelligent control can be achieved, constant-temperature closed-loop control over the UV light ink cylinder is carried out, ink supply is not affected by the external environment temperature, the flowability and uniformity of ink are good, and then good printing quality can be guaranteed.

Description

Technical Field

[0001] The utility model relates to a constant temperature ink supply device for an offset printing machine, belonging to the technical field of printing equipment. Background Art

[0002] At present, varnish is widely used in the printing field as a printing material. Varnish has a fast curing speed and can be cured in less than 1 / 10 second under UV lamp irradiation. It does not require the extended drying tunnel required for infrared drying. It has strong adaptability to printing materials and is particularly suitable for printing mirror paper, laser paper, transfer paper and other papers whose surfaces are not easy to absorb ink.

[0003] However, the original ink supply equipment of existing offset printing presses often has the following problems when printing with varnish:

[0004] (1) The normal viscosity of UV varnish is 20-80 seconds, and the normal production is generally 25-35 seconds at a temperature of 50-55°C. When used at low temperatures in winter, it is not conducive to the leveling and rapid curing of UV varnish, resulting in poor ink uniformity and poor printing effect at low temperatures;

[0005] (2) A diaphragm pump is used to pulsate ink supply, and the diaphragm pump has a short operating cycle, resulting in poor ink uniformity. Utility Model Content

[0006] In view of this, the purpose of the present invention is to provide a constant temperature ink supply device for an offset printing press, so as to at least solve the problems mentioned in the background technology.

[0007] The purpose of this utility model is achieved through the following technical solutions:

[0008] A constant temperature ink supply device for an offset printing press comprises a constant temperature ink box, wherein the top of the constant temperature ink box is provided with a box cover which can be opened or closed, an oil filling port and an ink outlet, an ink supply pump is provided on the ink outlet, the ink supply pump is connected to the offset printing press through an ink supply pipe system, a heating mechanism is provided at the bottom of the constant temperature ink box, and the heating mechanism and the ink supply pump are connected to a PLC controller.

[0009] Furthermore, the constant temperature ink box comprises an outer box, an ink storage inner box is arranged inside the outer box, a sealed interlayer is left between the outer box and the ink storage inner box, and the heating mechanism is arranged in the interlayer.

[0010] Furthermore, the heating mechanism includes high temperature resistant heat conducting oil arranged in the interlayer and an electric heating tube for heating the heat conducting oil. The electric heating tube is a serpentine tube arranged at the bottom of the ink storage inner box, and the serpentine tube is connected to the PLC controller through a temperature control component.

[0011] Furthermore, the temperature control component includes a temperature sensor and a temperature controller arranged in the interlayer, and an external power connection port is provided on one side of the outer box. The temperature sensor and the temperature controller are connected to the electric heating tube circuit and are connected to the external power supply through the external power connection port.

[0012] Furthermore, it also includes a frequency converter, which is connected to the ink supply pump and the temperature controller through a PLC controller.

[0013] Furthermore, heat insulating cotton is provided on the inner wall of the outer box to insulate and keep the heat transfer oil warm.

[0014] Furthermore, it also includes an ink return mechanism, which includes a reflux pipe and an ink return pump installed on the reflux pipe. The oil filling port on the top of the constant temperature ink tank is connected to the ink storage device through the reflux pipe, and the ink return pump is connected to the PLC controller.

[0015] Furthermore, a liquid level sensor is provided in the ink storage inner box, and the liquid level sensor is connected to the ink return pump through a PLC controller.

[0016] Furthermore, it also includes an audible and visual alarm, which is arranged on the constant temperature ink box and connected to the PLC controller for realizing fault alarm.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model adopts an integrated design with a simple and compact structure and is easy to use. It can realize fully automatic intelligent control and perform constant temperature closed-loop control of the UV light ink cylinder. The ink supply is not affected by the external ambient temperature, and the ink fluidity and uniformity are good, thereby ensuring good printing quality.

[0019] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings, in which:

[0021] Figure 1 A schematic structural diagram of a constant temperature ink supply device for an offset printing press provided in one embodiment of the utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0023] Figure 3 This is a control principle block diagram of the electric control system of the utility model.

[0024] In the figure: 1. Constant temperature ink box; 101. Outer box; 102. Ink storage inner box 102; 2. Box cover; 3. Oil filling port; 4. Ink supply pump; 5. Heating mechanism; 501. Thermal oil; 502. Electric heating tube; 6. Temperature control component; 601. Temperature sensor; 602. Temperature controller; 7. External power connection port; 8. Thermal insulation cotton; 9. PLC controller; 10. Ink return pump; 11. Liquid level sensor; 12. Frequency converter; 13. Sound and light alarm. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] like Figure 1-Figure 3 As shown, the utility model provides a constant temperature ink supply device for an offset printing press, including a constant temperature ink box 1, which is made of stainless steel, such as 304L stainless steel. The top of the constant temperature ink box 1 is provided with a box cover 2 that can be opened or closed, an oil filling port 3 and an ink outlet, and an ink supply pump 4 is provided on the ink outlet. The ink supply pump 4 can be connected to the offset printing press through an ink supply pipe system. A heating mechanism 5 is provided at the bottom of the constant temperature ink box 1, and the heating mechanism 5 and the ink supply pump 4 are connected to a PLC controller 9. The model of the PLC controller 9 can be Omron CP1E series.

[0028] The constant temperature ink box 1 comprises an outer box 101, an ink storage inner box 102 is arranged inside the outer box 101, a sealed interlayer is left between the outer box 101 and the ink storage inner box 102, and the heating mechanism 5 is arranged in the interlayer.

[0029] The heating mechanism 5 includes a high-temperature resistant heat-conducting oil 501 arranged in the interlayer and an electric heating tube 502 for heating the heat-conducting oil 501. The electric heating tube 502 is a serpentine tube arranged at the bottom of the ink storage inner box 102. The serpentine tube is connected to the PLC controller 9 through the temperature control component 6. After the electric heating tube 502 heats the heat-conducting oil 501, the ink in the ink storage inner box 102 can exchange heat with the high-temperature heat-conducting oil 501, thereby heating the ink.

[0030] The temperature control assembly 6 includes a temperature sensor 601 and a thermostat 602 arranged in the interlayer, and an external power connection port 7 is provided on one side of the outer box 101. The temperature sensor 601 and the thermostat 602 are connected to the electric heating pipe 502 circuit, and are connected to the external power supply through the external power connection port 7. The temperature sensor 601 is used to collect the temperature of the heat transfer oil 501 in real time, and the thermostat 602 is used to automatically open and close the heat transfer oil 502. By setting the heating temperature, the heating temperature of the heat transfer oil 502 can be automatically adjusted according to a pre-set program, so that the heat transfer oil can be heated to maintain a constant temperature, ensuring the safe operation of the control device. The model of the thermostat can be Omron E5CC.

[0031] The inner wall of the outer box 101 is also provided with heat insulation cotton 8 to insulate and keep the heat transfer oil warm.

[0032] Example 2

[0033] On the basis of Example 1, the utility model provides a constant temperature ink supply device for an offset printing press, which also includes an ink return mechanism, wherein the ink return mechanism includes a reflux pipe and an ink return pump 10 installed on the reflux pipe, the oil filling port 3 on the top of the constant temperature ink tank 1 is connected to the ink storage device through the reflux pipe, and the ink return pump 10 is connected to the PLC controller 9.

[0034] A liquid level sensor 11 is also provided in the ink storage inner box 102, and the liquid level sensor 11 is connected to the ink return pump 10 through the PLC controller 9. The liquid level interlocking control of the ink return pump 10 is realized through the liquid level sensor 11. The liquid level sensor 11 can be an E+H tuning fork liquid level switch.

[0035] Example 3

[0036] On the basis of embodiments 1 and 2, the utility model provides a constant temperature ink supply device for an offset printing press, further comprising a frequency converter 12, wherein the frequency converter 12 is connected to the ink supply pump 4 and the temperature controller 602 through the PLC controller 9, so as to realize the frequency conversion control of the ink supply pump 4 and the temperature controller 602. The model of the frequency converter 12 may be Omron 3G3JZ. The model of the ink supply pump 4 and the ink return pump 10 may be ATN ink pumps, which realize frequency conversion control in combination with the frequency converter 12, have a long operation cycle, good ink uniformity, and are efficient, safe and reliable in operation.

[0037] Example 4

[0038] On the basis of embodiments 1, 2, and 3, the present utility model provides a constant temperature ink supply device for an offset printing press, further comprising an audible and visual alarm 13, which is arranged on an outer box 101 and connected to a PLC controller 9. The PLC controller 9 can control the operation of each component, and when a fault occurs in each component, obtain a fault detection result, and control the audible and visual alarm according to the fault detection result to realize a fault alarm.

[0039] Working principle and process of the device:

[0040] The control of the device is centered on the PLC controller 9. A threshold value of the heat transfer oil 501 is set in the PLC controller 9. When in use, the temperature of the heat transfer oil 501 is collected in real time through the temperature sensor 601. When the temperature of the heat transfer oil 501 is lower than the threshold value, the PLC controller 9 controls the thermostat 602 to automatically turn on the electric heating tube 502 to heat the heat transfer oil 501, thereby heating the ink in the ink storage inner box 102. When the temperature of the heat transfer oil 501 is equal to or higher than the threshold value, the thermostat 602 automatically turns off the electric heating tube 502, thereby realizing constant temperature closed-loop control of the ink cylinder.

[0041] The above is only a preferred embodiment of the utility model, and does not limit the confidentiality of the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. A constant temperature ink supply device for an offset printing press, characterized in that: The invention comprises a constant temperature ink box (1), wherein the top of the constant temperature ink box (1) is provided with a box cover (2) which can be opened or closed, an oil filling port (3) and an ink outlet, an ink supply pump (4) is provided on the ink outlet, and the ink supply pump (4) is connected to an offset printing machine through an ink supply pipe system. A heating mechanism (5) is provided at the bottom of the constant temperature ink box (1), and the heating mechanism (5) and the ink supply pump (4) are connected to a PLC controller (9).

2. The constant temperature ink supply device for an offset printing press according to claim 1, characterized in that: The constant temperature ink box (1) comprises an outer box (101), an ink storage inner box (102) is arranged inside the outer box (101), a sealed interlayer is left between the outer box (101) and the ink storage inner box (102), and the heating mechanism (5) is arranged in the interlayer.

3. The constant temperature ink supply device for an offset printing press according to claim 2, characterized in that: The heating mechanism (5) comprises high temperature resistant heat conducting oil (501) arranged in the interlayer and an electric heating pipe (502) for heating the heat conducting oil (501); the electric heating pipe (502) is a serpentine pipe arranged at the bottom of the ink storage inner box (102); the serpentine pipe is connected to the PLC controller (9) via a temperature control component (6).

4. The constant temperature ink supply device for offset printing press according to claim 3, characterized in that: The temperature control component (6) comprises a temperature sensor (601) and a temperature controller (602) arranged in the interlayer, and an external power connection port (7) is provided on one side of the outer box (101); the temperature sensor (601), the temperature controller (602) are connected to the electric heating tube (502) circuit, and are connected to an external power source via the external power connection port (7).

5. The constant temperature ink supply device for an offset printing press according to claim 4, characterized in that: It also includes a frequency converter (12), which is connected to the ink supply pump (4) and the temperature controller (602) via a PLC controller (9).

6. The constant temperature ink supply device for offset printing press according to claim 2, characterized in that: The inner wall of the outer box (101) is also provided with heat insulating cotton (8) to insulate and keep the heat transfer oil warm.

7. The constant temperature ink supply device for an offset printing press according to claim 2, characterized in that: It also includes an ink return mechanism, which includes a return pipe and an ink return pump (10) installed on the return pipe. The oil filling port (3) on the top of the constant temperature ink box (1) is connected to the ink storage device through the return pipe, and the ink return pump (10) is connected to the PLC controller (9).

8. The constant temperature ink supply device for an offset printing press according to claim 7, characterized in that: A liquid level sensor (11) is also provided in the ink storage inner box (102), and the liquid level sensor (11) is connected to the ink return pump (10) via a PLC controller (9).

9. The constant temperature ink supply device for an offset printing press according to any one of claims 1 to 8, characterized in that: It also includes an audible and visual alarm (13), which is arranged on the constant temperature ink box (1) and connected to the PLC controller (9) for realizing fault alarm.

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