Intaglio printing apparatus

Abstract

The utility model discloses a kind of gravure printing devices, including ink tank and the printing roller being set to its above, the utility model is connected to external control host by contact sensor, immersion sensor and electric push rod, realize intelligent control, the push plate is lifted by telescopic shaft to control, ink inside ink tank is pushed and lifted, the density of push plate side and ink tank inner wall contact is increased by sealing rubber ring, prevent ink drop to the below of push plate, so that printing roller can be immersed in gradually reduced ink, and then the bottom ink in ink tank can be used, prevent it from causing deposition due to long time not being used, the highest position of push plate is limited by contact sensor, simultaneously control the electromagnetic valve of ink inlet, external ink supply pump is connected by ink inlet, and then ink is supplied to the inside of ink tank, the liquid level of ink is sensed by immersion sensor, and then telescopic shaft pushes push plate to lift.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, specifically to a gravure printing device. Background Technology

[0002] Gravure printing, as a printing process, occupies an extremely important position in the printing, packaging, and graphic publishing fields due to its advantages such as thick ink layers, bright colors, high saturation, high plate durability, stable print quality, and fast printing speed.

[0003] In gravure printing apparatus, there is a gravure printing roller, part of which is placed in an ink tank and immersed in ink. The gravure printing roller carries the ink, which is then spread onto the substrate by a doctor blade. Because the substrate needs to be printed multiple times, the ink in the ink tank will gradually decrease. At this time, ink needs to be added to the ink tank, but the ink at the bottom will be gradually covered and never used, resulting in sedimentation and affecting ink quality. If a printhead is used to spray ink onto the printing roller, the printhead will become dusty over time, resulting in poor spraying. At the same time, the uniformity of spraying is difficult to control. Therefore, a gravure printing apparatus is needed to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model discloses a gravure printing device. The technical solution includes an ink tank and a printing roller disposed above it. A scraper is provided at the upper end of the ink tank, and the scraper contacts the lower side of the printing roller. A contact sensor and an immersion sensor are provided on the inner side of the ink tank, with the immersion sensor located above the contact sensor. An ink inlet is provided on the side of the ink tank, which is opened and closed by a solenoid valve. An electric push rod is provided at the bottom of the ink tank, and the telescopic shaft of the electric push rod extends upward into the ink tank. A push plate is provided at the top of the telescopic shaft, and a sealing ring is provided around the perimeter of the push plate. The outer side of the sealing ring contacts the inner wall of the ink tank, allowing air to pass through. By electrically connecting the contact sensor, immersion sensor, and electric push rod to an external control host, intelligent control is achieved. The push plate is raised via a telescopic shaft, pushing the ink in the ink tank upwards. A sealing ring increases the tightness of the contact between the push plate side and the inner wall of the ink tank, preventing ink from dripping below the push plate. This ensures that the printing roller is always immersed in the gradually decreasing ink, allowing the use of the ink at the bottom of the ink tank and preventing sedimentation due to prolonged disuse. The contact sensor limits the highest position of the push plate and controls the solenoid valve of the ink inlet. The ink inlet connects to an external ink pump, supplying ink into the ink tank. The immersion sensor senses the ink level and controls the telescopic shaft to push the push plate upwards.

[0005] As a preferred technical solution of the gravure printing device of this utility model, the contact sensor is a magnetic reed switch, and a neodymium magnet is provided on the upper surface of the push plate, and the neodymium magnet cooperates with the contact sensor.

[0006] As a preferred technical solution of the gravure printing device of this utility model, the immersion sensor is an optical immersion sensor.

[0007] As a preferred technical solution of the gravure printing device of this utility model, the upper end of the electric push rod is provided with a mounting plate, the mounting plate is provided with bolts, and the mounting plate is connected to the bottom of the ink tank by bolts. The mounting plate facilitates the disassembly of the electric push rod, thereby facilitating the maintenance of the electric push rod.

[0008] As a preferred technical solution of the gravure printing device of this utility model, the top of the telescopic shaft is provided with a threaded connection hole, and the push plate is provided with a connecting screw installed in the recessed screw hole. The connecting screw is connected to the threaded connection hole. The push plate can be easily disassembled and maintained through the separable telescopic shaft and push plate.

[0009] As a preferred technical solution of the gravure printing device of this utility model, the bottom of the push plate is provided with a cross reinforcing rib, and a sleeve ring is provided at the center of the cross reinforcing rib. The sleeve ring is sleeved on the telescopic shaft. The cross reinforcing rib can increase the structural strength of the push plate, and the sleeve ring can increase the connection strength between the push plate and the telescopic shaft.

[0010] The beneficial effects of this utility model are as follows: This utility model achieves intelligent control by electrically connecting the contact sensor, immersion sensor, and electric push rod to an external control host. The push plate is raised via a telescopic shaft, pushing the ink in the ink tank upwards. A sealing ring increases the tightness of contact between the push plate side and the inner wall of the ink tank, preventing ink from dripping below the push plate and ensuring the printing roller is always immersed in the gradually decreasing ink. This allows the use of the ink at the bottom of the ink tank, preventing sedimentation due to prolonged disuse. The contact sensor limits the highest position of the push plate and simultaneously controls the solenoid valve of the ink inlet, which connects to an external ink pump to supply ink to the ink tank. The immersion sensor senses the ink level and controls the telescopic shaft to push the push plate upwards. The mounting plate facilitates the disassembly and maintenance of the electric push rod. The separable telescopic shaft and push plate facilitate disassembly and maintenance of the push plate. Cross-shaped reinforcing ribs increase the structural strength of the push plate, and a connecting ring increases the connection strength between the push plate and the telescopic shaft. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a cross-sectional view of the present invention;

[0013] Figure 3 This is a schematic diagram of the ink tank structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the front structure of the ink tank of this utility model;

[0015] Figure 5 This is a schematic diagram of the electric actuator structure of this utility model;

[0016] Figure 6 This is a schematic diagram of the push plate structure of this utility model;

[0017] Figure 7 This is a schematic diagram of the lower structure of the push plate of this utility model.

[0018] In the diagram: 1-Ink tank, 101-Scraper, 102-Contact sensor, 103-Immersion sensor, 104-Ink inlet, 2-Printing roller, 3-Electric push rod, 301-Telescopic shaft, 302-Mounting plate, 303-Threaded connection hole, 4-Push plate, 401-Neodymium magnet, 402-Sealing ring, 403-Connecting screw, 404-Cross reinforcing rib, 405-Socket ring. Detailed Implementation

[0019] Example 1

[0020] like Figures 1 to 7As shown, this utility model discloses a gravure printing device. The technical solution includes an ink tank 1 and a printing roller 2 disposed above it. A scraper 101 is disposed at the upper end of the ink tank 1, and the scraper 101 contacts the lower side of the printing roller 2. A contact sensor 102 and an immersion sensor 103 are disposed on the inner side of the ink tank 1, and the immersion sensor 103 is located above the contact sensor 102. An ink inlet 104, which is opened and closed by a solenoid valve, is disposed on the side of the ink tank 1. The contact sensor 102 is a magnetic reed switch. A neodymium magnet 401 is disposed on the upper surface of the push plate 4, and the neodymium magnet 401 cooperates with the contact sensor 102. The immersion sensor 102... 3 is an optical immersion sensor; an electric push rod 3 is installed at the bottom of the ink tank 1, and the telescopic shaft 301 of the electric push rod 3 extends upward into the ink tank 1. A mounting plate 302 is installed at the upper end of the electric push rod 3, and bolts are installed on the mounting plate 302. The mounting plate 302 is connected to the bottom of the ink tank 1 by bolts. The mounting plate 302 facilitates the disassembly of the electric push rod 3, thereby facilitating the maintenance of the electric push rod 3; a push plate 4 is installed at the top of the telescopic shaft 301, and a sealing ring 402 is installed around the perimeter of the push plate 4. The outer side of the sealing ring 402 contacts the inner wall of the ink tank 1. A threaded connection hole 303 is opened at the top of the telescopic shaft 301, and a recessed screw hole is provided on the push plate 4. The connecting screw 403 connects to the threaded connection hole 303. The detachable telescopic shaft 301 and push plate 4 facilitate disassembly and maintenance of the push plate 4. A cross-shaped reinforcing rib 404 is provided at the bottom of the push plate 4, and a sleeve ring 405 is provided at the center of the cross-shaped reinforcing rib 404. The sleeve ring 405 is sleeved on the telescopic shaft 301. The cross-shaped reinforcing rib 404 increases the structural strength of the push plate 4, and the sleeve ring 405 increases the connection strength between the push plate 4 and the telescopic shaft 301. Intelligent control is achieved by electrically connecting the contact sensor 102, immersion sensor 103, and electric push rod 3 to an external control host, and the telescopic shaft 301 controls the operation. The push plate 4 rises, pushing the ink inside the ink tank 1 upwards. The sealing ring 402 increases the tightness of the contact between the side of the push plate 4 and the inner wall of the ink tank 1, preventing ink from dripping to the bottom of the push plate 4. This ensures that the printing roller 2 is always immersed in the gradually decreasing ink, allowing the ink at the bottom of the ink tank 1 to be used and preventing it from settling due to prolonged disuse. The contact sensor 102 limits the highest position of the push plate 4 and controls the solenoid valve of the ink inlet 104. The ink inlet 104 connects to an external ink pump, supplying ink to the ink tank 1. The immersion sensor 103 senses the ink level and controls the telescopic shaft 301 to push the push plate 4 upwards.

[0021] The working principle of this utility model is as follows: During use, the printing roller 2 carries the ink for printing. The ink in the ink tank 1 gradually decreases, and the immersion sensor 103 gradually emerges. At this time, the sensing signal is transmitted to the external control host. The control host starts the electric push rod 3, and the telescopic shaft 301 pushes the push plate 4 upward, causing the ink level to rise and immerse the immersion sensor 103. The electric push rod 3 then stops, and the above process is repeated until the neodymium magnet 401 engages with the contact sensor 102. The electric push rod 3 then descends, the solenoid valve of the ink inlet 104 opens, and ink is poured into the ink tank 1. After the electric push rod 3 reaches its lowest point and resets, the poured ink immerses the immersion sensor 103, and the solenoid valve of the ink inlet 104 closes, completing the ink filling process. The circuit connection involved in this utility model is a conventional method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0024] Components not described in detail in this article are existing technologies.

[0025] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A gravure printing apparatus, comprising an ink tank (1) and a printing roller (2) disposed above it, wherein a scraper (101) is disposed at the upper end of the ink tank (1), the scraper (101) contacting the lower side of the printing roller (2), characterized in that, A contact sensor (102) and an immersion sensor (103) are provided on the inner side of the ink tank (1), and the immersion sensor (103) is located above the contact sensor (102). An ink inlet (104) is provided on the side of the ink tank (1) and is opened and closed by a solenoid valve. An electric push rod (3) is provided at the bottom of the ink tank (1), and the telescopic shaft (301) of the electric push rod (3) extends upward into the ink tank (1). A push plate (4) is provided at the top of the telescopic shaft (301), and a sealing ring (402) is provided around the push plate (4). The outer side of the sealing ring (402) contacts the inner wall of the ink tank (1).

2. The gravure printing apparatus according to claim 1, characterized in that: The contact sensor (102) is a magnetic reed switch, and a neodymium magnet (401) is provided on the upper surface of the push plate (4), which cooperates with the contact sensor (102).

3. The gravure printing apparatus according to claim 1, characterized in that: The immersion sensor (103) is an optical immersion sensor.

4. The gravure printing apparatus according to claim 1, characterized in that: The upper end of the electric push rod (3) is provided with a mounting plate (302), and the mounting plate (302) is provided with bolts. The mounting plate (302) is connected to the bottom of the ink tank (1) by bolts.

5. The gravure printing apparatus according to claim 1, characterized in that: The telescopic shaft (301) has a threaded connection hole (303) at the top, and the push plate (4) is provided with a connecting screw (403) installed in the recessed screw hole. The connecting screw (403) is connected to the threaded connection hole (303).

6. The gravure printing apparatus according to claim 1, characterized in that: The bottom of the push plate (4) is provided with a cross reinforcing rib (404), and a sleeve ring (405) is provided at the center of the cross reinforcing rib (404). The sleeve ring (405) is sleeved on the telescopic shaft (301).

Images