Digital ink supply device of offset press

Abstract

The utility model relates to an offset press digital ink supply device which comprises an ink inlet cavity seat and digital ink supply valves, a plurality of digital ink supply valves are installed on the ink inlet cavity seat at equal intervals, air cylinders are installed at the top ends of the digital ink supply valves, an ink jet cavity seat is installed at the bottom ends of the digital ink supply valves, an electromagnetic valve plate is installed on the ink inlet cavity seat, and the electromagnetic valve plate is installed on the ink jet cavity seat. A plurality of electromagnetic valves are mounted on the electromagnetic valve plate; the cylinder is controlled through the electromagnetic valve, so that the piston is driven to move up and down, the piston rod moves up and down through the piston, the piston rod drives the valve element to move up and down synchronously and is matched with the valve body to turn off and turn on ink, and the ink supply amount is changed.

Description

Technical Field

[0001] The utility model relates to the technical field of ink supply for offset printing machines, in particular to a digital ink supply device for offset printing machines. Background Art

[0002] In traditional ink supply devices, the printing press operator usually pre-adjusts the ink amount of the ink key based on experience. Before starting the machine, the approximate ink amount in each ink area is estimated based on the distribution of images and texts on the printing plate or sample, and this is used as the pre-set value of the ink amount. After starting the machine, further adjustments are made based on the specific changes in the printed product. This ink release method is relatively rough, and the accuracy varies greatly due to different operating experience and subjective understanding of the operator. This pre-ink release method consumes a lot of paper from startup to formal printing, is time-consuming to adjust, and the workload of the machine operator is also increased accordingly.

[0003] With the advancement of technology, electric inking devices for offset printing machines have emerged. They usually use an integral ink fountain and set a row of ink zone scrapers of a certain width on the plane above the ink fountain. The angle of the scraper is changed by a micro motor or the scraper is moved back and forth to change the gap between the scraper and the ink fountain roller. As a result, when the ink fountain roller rotates at a low speed, different amounts of ink are rolled out from the ink fountain to change the amount of ink supplied. This type of ink supply device has a complex structure, relatively high cost, and is not easy to maintain. Utility Model Content

[0004] The problem solved by the utility model is to provide a digital ink supply device for an offset printing press, so as to solve the above-mentioned technical problems.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A digital ink supply device for an offset printing press comprises an ink feed chamber seat and a digital ink supply valve, wherein a plurality of digital ink supply valves are mounted on the ink feed chamber seat at equal intervals, a cylinder is mounted on the top of each digital ink supply valve, and an inkjet chamber seat is mounted on the bottom of each digital ink supply valve, a solenoid valve plate is mounted on the ink feed chamber seat, and a plurality of solenoid valves are mounted on the solenoid valve plate;

[0007] The digital ink supply valve comprises a valve body, an inner side wall of the valve body is provided with a feed port, a bottom of the valve body is provided with a discharge port, and a valve core is slidably mounted within the valve body.

[0008] Preferably, an ink inlet cavity is opened inside the ink inlet cavity seat, the ink inlet of the ink inlet cavity is connected to the pressure ink cylinder through an ink supply tube, and the ink inlet cavity is internally pressurized by an air compressor, and the ink outlet of the ink inlet cavity is sealed with the feed port.

[0009] Preferably, the cylinder includes a cylinder body, a piston rod is installed through the inside of the cylinder body, a piston is installed on the piston rod, the bottom end of the piston rod passes through the valve body and is connected to the valve core, and the top end of the piston rod is located on the outside of the cylinder body and a fine-tuning knob is installed, and a continuous air inlet and a control air inlet are opened on the side wall of the cylinder body, and the continuous air inlet is located above the piston, and the control air inlet is located below the piston.

[0010] Preferably, the solenoid valve is sealedly connected to the continuous air inlet and the control air inlet through air pipes.

[0011] Preferably, an inkjet cavity is provided in the inkjet cavity seat, the top end of the inkjet cavity is sealedly connected to the discharge port, and the bottom end of the inkjet cavity faces the ink fountain roller.

[0012] The beneficial effects of the utility model are as follows: the cylinder is controlled by the electromagnetic valve, thereby driving the piston to move up and down, and the piston is used to realize the up and down movement of the piston rod. The piston rod drives the valve core to move up and down synchronously, and cooperates with the valve body to achieve the effect of closing and opening the ink, thereby changing the amount of ink supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the first overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the second overall structure of the utility model;

[0015] Figure 3 This is a cross-sectional view of the utility model;

[0016] Figure 4 This is a cross-sectional view of the digital ink supply valve and cylinder of the utility model.

[0017] Legend:

[0018] 1. Ink inlet chamber seat; 2. Digital ink supply valve; 3. Cylinder; 4. Inkjet chamber seat; 5. Solenoid valve plate; 6. Solenoid valve; 7. Ink inlet chamber; 8. Valve body; 9. Feed port; 10. Feed port; 11. Valve core; 12. Cylinder body; 13. Piston rod; 14. Piston; 15. Fine-tuning knob; 16. Continuous air inlet; 17. Control air inlet; 18. Inkjet chamber. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Specific examples are given below.

[0021] See also Figures 1 to 4 A digital ink supply device for an offset printing press comprises an ink inlet chamber seat 1 having an ink inlet chamber 7 formed therein. The ink inlet of the ink inlet chamber 7 is connected to a pressure ink cylinder via an ink delivery tube, and the ink inlet chamber 7 is internally pressurized by an air compressor. The ink outlet of the ink inlet chamber 7 is sealedly connected to a feed port 9. Ink is pre-loaded into a pressure ink barrel. The air compressor adds compressed air to the pressure ink barrel and presses the ink into the ink inlet chamber 7 of the ink inlet chamber seat 1 via the ink delivery tube. The device comprises an ink inlet chamber seat 1 and a digital ink supply valve 2. Several digital ink supply valves 2 are evenly spaced and mounted on the ink inlet chamber seat 1. A cylinder 3 is mounted on the top of the digital ink supply valve 2. An inkjet chamber seat 4 is mounted on the bottom of the several digital ink supply valves 2. A solenoid valve plate 5 is mounted on the ink inlet chamber seat 1, and several solenoid valves 6 are mounted on the solenoid valve plate 5.

[0022] The digital ink supply valve 2 includes a valve body 8, an inner side wall of the valve body 8 is provided with a feed port 9, a bottom of the valve body 8 is provided with a discharge port 10, a valve core 11 is slidably installed in the valve body 8, and the cylinder 3 includes a cylinder body 12, a piston rod 13 is installed inside the cylinder body 12, a piston 14 is installed on the piston rod 13, the bottom end of the piston rod 13 passes through the valve body 8 and is connected to the valve core 11, and the top end of the piston rod 13 is located on the outside of the cylinder body 12 and is provided with a fine-tuning hand button 15. The stroke of the piston 14 can be adjusted by the fine-tuning hand button 15. A continuous air inlet 16 and a control air inlet 17 are provided on the side wall of the cylinder body 12, and the continuous air inlet 16 is located above the piston 14, and the control air inlet 17 is located above the piston 14. Below the piston 14, the solenoid valve 6 is sealed and connected to the continuous air inlet 16 and the control air inlet 17 through the air pipe. The solenoid valve 6 is used to control the cylinder 3, thereby driving the piston 14 to move up and down. The piston 14 is used to drive the piston rod 13 and the valve core 11 to move up and down to achieve the effect of closing and opening the ink. An inkjet chamber 18 is opened in the inkjet chamber seat 4. The top of the inkjet chamber 18 is sealed and connected to the discharge port 10, and the bottom of the inkjet chamber 18 faces the ink fountain roller. Compressed air enters the cylinder body 12 through the continuous air inlet 16 and the control air inlet 17, driving the piston 14, the piston rod 13 and the valve core 11 to move up and down, thereby realizing the opening and closing of the digital ink supply valve 2.

[0023] The ink is pre-loaded into the pressure ink barrel, and the air compressor adds compressed air to the pressure ink barrel, pressing the ink into the ink inlet cavity 7 of the ink inlet cavity seat 1 through the ink supply tube, thereby pressing the ink into the valve body 8 of the digital ink supply valve 2. The compressed air enters the cylinder body 12 through the continuous air inlet 16 and the control air inlet 17, driving the piston 14, the piston rod 13 and the valve core 11 to move downward. At this time, the digital ink supply valve 2 is in the open state, and the ink enters the inkjet cavity 18 of the inkjet cavity seat 4 through the discharge port 10, and is sprayed onto the ink head roller from the bottom of the inkjet cavity 18. The ink is then simply stretched and evenly distributed through the gap between the ink head roller and the scraper. During the rotation process, the ink head roller transmits ink to the ink stringing and ink distribution part of the offset printing unit.

[0024] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A digital ink supply device for an offset printing press, characterized in that: The invention comprises an ink inlet chamber seat (1) and a digital ink supply valve (2), wherein a plurality of digital ink supply valves (2) are installed at equal intervals on the ink inlet chamber seat (1), a cylinder (3) is installed on the top of the digital ink supply valve (2), and an inkjet chamber seat (4) is installed on the bottom of the plurality of digital ink supply valves (2), a solenoid valve plate (5) is installed on the ink inlet chamber seat (1), and a plurality of solenoid valves (6) are installed on the solenoid valve plate (5); The digital ink supply valve (2) comprises a valve body (8), an inner side wall of the valve body (8) is provided with a feed port (9), a bottom of the valve body (8) is provided with a discharge port (10), and a valve core (11) is slidably installed in the valve body (8).

2. The digital ink supply device for an offset printing press according to claim 1, characterized in that: An ink inlet cavity (7) is provided inside the ink inlet cavity seat (1), an ink inlet port of the ink inlet cavity (7) is connected to a pressure ink cylinder via an ink delivery tube, and the ink inlet cavity (7) is internally pressurized by an air compressor, and an ink outlet port of the ink inlet cavity (7) is sealedly connected to a feed port (9).

3. The digital ink supply device for an offset printing press according to claim 2, characterized in that: The cylinder (3) includes a cylinder body (12), a piston rod (13) is installed inside the cylinder body (12), a piston (14) is installed on the piston rod (13), the bottom end of the piston rod (13) passes through the valve body (8) and is connected to the valve core (11), and the top end of the piston rod (13) is located outside the cylinder body (12) and is installed with a fine-tuning knob (15), the side wall of the cylinder body (12) is provided with a continuous air inlet (16) and a control air inlet (17), and the continuous air inlet (16) is located above the piston (14), and the control air inlet (17) is located below the piston (14).

4. The digital ink supply device for an offset printing press according to claim 3, characterized in that: The solenoid valve (6) is respectively connected to the continuous air inlet (16) and the control air inlet (17) through air pipe sealing.

5. The digital ink supply device for an offset printing press according to claim 4, characterized in that: An inkjet cavity (18) is provided in the inkjet cavity seat (4), the top end of the inkjet cavity (18) is sealed and connected to the discharge port (10), and the bottom end of the inkjet cavity (18) faces the ink fountain roller.

Images