Drying mechanism of flexographic printing machine

Abstract

The utility model relates to the technical field of flexographic machines, and discloses a drying mechanism of a flexographic machine, which comprises a bottom shell and an air heater, the air heater is arranged on one side of the top of the bottom shell, a vertical shell is arranged on the other side of the top of the bottom shell, an air outlet surface baffle is arranged on one side of the vertical shell, a plurality of air outlet holes are arranged in the middle of the air outlet surface baffle, and the air outlet holes are communicated with the vertical shell. A plurality of air outlet holes are formed in the vertical shell, the air outlet holes are vertically distributed at equal intervals, an air gathering cover is arranged on the outer sides of the air outlet holes, side air guide shells are arranged on the two sides of the middle of the air gathering cover, locking bolts are arranged at the two ends of each side air guide shell, and adjusting grooves are formed in the two sides of the vertical shell. The positions of the side air guide shells and the fixed connecting assemblies of the side air guide shells relative to the adjusting grooves can be adjusted, so that the height of the air outlets is adjusted, the size of the air gathering cover is larger than that of the air outlet holes, the height of the air outlets of each layer can be adjusted to a certain degree, and the drying device is suitable for drying stacked printing units of different heights.

Description

Technical Field

[0001] This utility model relates to the field of flexographic printing machine technology, specifically to a drying mechanism for a flexographic printing machine. Background Technology

[0002] During flexographic printing, an anilox roller evenly coats the image area of ​​the printing plate with an ink layer of a certain thickness. Then, under the pressure of the impression cylinder, the ink layer of the image area is transferred to the surface of the substrate, forming a clear image. After the ink is transferred to the substrate, it needs to undergo a drying process to form a firm ink film. The drying unit provides heat to accelerate the evaporation of solvents in the ink, allowing the ink to dry quickly and solidify on the substrate surface.

[0003] For example, an existing Chinese patent (CN211567305U) discloses a drying mechanism for a flexographic printing press, including a frame and a drying assembly. The frame comprises multiple layers, each with a horizontally fixed support plate. The drying assembly includes a housing and a hot air assembly disposed within the housing. The side walls of the frame have placement holes for inserting the housing into the support plates within the frame. The frame also has cover plates embedded in and sealing the placement holes. The bottom of the housing is open, and support blocks protrude downwards on both the front and rear sides of the housing, abutting against the support plates. This invention has the advantage of easy removal, inspection, and replacement.

[0004] Existing stacked flexographic printing presses, sometimes also called stacked flexographic printing presses, consist of independent printing units stacked one on top of the other. However, the air outlet height of traditional drying devices is often fixed and cannot be adjusted according to the stacked printing units. During drying, the airflow cannot be concentrated on the area that needs to be dried, affecting the drying effect. Utility Model Content

[0005] The purpose of this invention is to provide a drying mechanism for a flexographic printing machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drying mechanism for a flexographic printing machine, comprising: a bottom shell and a hot air blower. The hot air blower is provided on one side of the top of the bottom shell, and a vertical shell is provided on the other side. An air outlet baffle is provided on one side of the vertical shell, and an air outlet hole is opened in the middle of the air outlet baffle. There are several air outlet holes, which are arranged vertically at equal intervals. An air concentrator is provided outside the air outlet hole. Side air guide shells are provided on both sides of the middle of the air concentrator. Locking bolts are provided at both ends of the side air guide shells. Adjustment grooves are provided on both sides of the vertical shell. The screw part of the locking bolt passes through the adjustment groove. An air outlet strip is provided outside the side air guide shells and the air concentrator, and the air outlet strip is in communication with the side air guide shells and the air concentrator.

[0007] Furthermore, an exhaust valve is provided on one side of the top of the vertical shell, and an inspection window is provided on the bottom side of the bottom shell.

[0008] Furthermore, a return pipe is provided on one side of the top of the vertical shell, and the bottom end of the return pipe is connected to one side of the bottom shell. A wind baffle is provided inside the bottom shell above the bottom end of the return pipe.

[0009] Furthermore, the wind deflector is inclined, and the higher end of the inclined surface of the wind deflector is fixed to the side wall of the bottom shell.

[0010] Furthermore, the size of the wind-gathering hood is larger than the size of the air outlet, and a sealing strip is provided on the contact surface between the outer wall of the wind-gathering hood and the air outlet baffle.

[0011] Furthermore, a fixed air guide plate is provided in the center of the inner wall of the air hood, and movable air guide plates are provided on both sides of the middle part of the fixed air guide plate.

[0012] Furthermore, the movable air guide plate and the fixed air guide plate are connected by a torsion spring shaft.

[0013] Furthermore, a stop block is provided on one side of the outer wall of the fixed air guide plate, the stop block is close to the air outlet baffle, and the stop block is used to limit the movement of the movable air guide plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model, through the design of a bottom shell, a vertical shell, and an air-concentrating hood, enables the use of a hot air blower to heat outside air and send it into the bottom and vertical shells when the drying mechanism of the flexographic printing machine is in use. The hot air is blown out through the air outlet, and then guided by the air-concentrating hood, the side air guide shell, and the air outlet strip before being blown out through the outlet on the air outlet strip, thus drying the printing units on the flexographic printing machine. Through the multi-layered arrangement of the air outlets, the synchronous drying of the stacked printing units of the flexographic printing machine is achieved.

[0016] When it is necessary to adjust the height of the air outlet, the position of the side air guide shell and its fixed connection components relative to the adjustment groove can be adjusted by loosening the locking bolt, thereby adjusting the height of the air outlet. Since the size of the air shroud is larger than the air outlet hole, the height of the air outlet of each layer can be adjusted to a certain extent, which is suitable for drying of laminated printing units of different heights.

[0017] During the hot air drying process, hot air is blown out through the air outlet and blown towards the fixed air guide plate. The air force will drive the movable air guide plate to overcome the elastic force of the torsion spring shaft, causing the movable air guide plate to rotate at a certain angle, so that the hot air can quickly enter the side air guide shells on both sides, making it easier for the hot air to be blown out evenly from the air outlet strip, thus improving the drying effect.

[0018] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0019] Figure 1 This is a perspective view of the drying mechanism of a flexographic printing machine according to the present invention;

[0020] Figure 2 This is a front view of the drying mechanism of a flexographic printing machine according to the present invention;

[0021] Figure 3 This is a front sectional view of the drying mechanism of a flexographic printing machine according to the present invention;

[0022] Figure 4 This is a schematic diagram of the air-collecting hood connection structure of the drying mechanism of a flexographic printing machine according to the present invention;

[0023] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0024] In the diagram: 1. Bottom shell; 2. Hot air blower; 3. Vertical shell; 4. Adjustment groove; 5. Locking bolt; 6. Air outlet baffle; 7. Air concentrator; 8. Side air guide shell; 9. Air outlet strip; 10. Exhaust valve; 11. Return pipe; 12. Baffle plate; 13. Air outlet hole; 14. Sealing strip; 15. Fixed air guide plate; 16. Movable air guide plate; 17. Baffle block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Please see Figures 1-5 This utility model provides a technical solution: a drying mechanism for a flexographic printing machine, comprising: a bottom shell 1 and a hot air blower 2. The hot air blower 2 is provided on one side of the top of the bottom shell 1, and a vertical shell 3 is provided on the other side. The vertical shell 3 has an air outlet baffle 6 on one side, and an air outlet hole 13 is opened in the middle of the air outlet baffle 6. There are several air outlet holes 13, which are arranged vertically at equal intervals. When the drying mechanism of the flexographic printing machine is in use, the hot air blower 2 heats the outside air and sends it into the bottom shell 1 and the vertical shell 3. The hot air is blown out through the air outlet hole 13, and then guided by the air gathering hood 7, the side air guide shell 8 and the air outlet strip 9 and blown out through the outlet on the air outlet strip 9 to dry the printing units on the flexographic printing machine with hot air. Through the multi-layer arrangement of the air outlet 13, the synchronous drying of the stacked printing units of the flexographic printing machine is achieved.

[0027] An air-concentrating hood 7 is provided on the outside of the air outlet 13. Side air guide shells 8 are provided on both sides of the middle part of the air-concentrating hood 7. Locking bolts 5 are provided at both ends of the side air guide shells 8. Adjustment grooves 4 are provided on both sides of the vertical shell 3. The screw part of the locking bolt 5 passes through the adjustment groove 4. An air outlet strip 9 is provided on the outside of the side air guide shell 8 and the air-concentrating hood 7. The air outlet strip 9 is connected to the side air guide shell 8 and the air-concentrating hood 7.

[0028] An exhaust valve 10 is provided on one side of the top of the vertical shell 3, and an inspection window is provided on the bottom side of the bottom shell 1. The exhaust valve 10 is used to ensure that the internal pressure of the vertical shell 3 does not exceed the set value. Once it does, the exhaust valve 10 opens to release the pressure, ensuring that the hot air pressure will not damage the printed products. The inspection window facilitates the maintenance of the internal components of the drying mechanism.

[0029] A return pipe 11 is provided on one side of the top of the vertical shell 3. The bottom end of the return pipe 11 is connected to one side of the bottom shell 1. A baffle plate 12 is provided inside the bottom shell 1 above the bottom end of the return pipe 11. The baffle plate 12 is inclined, and the higher end of the inclined surface of the baffle plate 12 is fixed to the side wall of the bottom shell 1. The return pipe 11 allows some hot air to return to the bottom shell 1 to achieve hot air circulation, and the baffle plate 12 guides the returning hot air. When it is necessary to adjust the height of the air outlet, the position of the side air guide shell 8 and its fixed connection components relative to the adjustment groove 4 can be adjusted by loosening the locking bolt 5, thereby adjusting the height of the air outlet. Since the size of the air concentrator 7 is larger than the air outlet 13, the height of the air outlet of each layer can be adjusted to a certain extent, which is suitable for drying of laminated printing units of different heights.

[0030] The size of the wind concentrator 7 is larger than the size of the air outlet 13. A sealing strip 14 is provided on the contact surface between the outer wall of the wind concentrator 7 and the air outlet baffle 6. The sealing strip 14 is used to seal between the wind concentrator 7 and the air outlet baffle 6.

[0031] A fixed air guide plate 15 is provided in the center of the inner wall of the air hood 7, and movable air guide plates 16 are provided on both sides of the middle of the fixed air guide plate 15. The movable air guide plates 16 and the fixed air guide plate 15 are connected by a torsion spring shaft. A stop block 17 is provided on one side of the outer wall of the fixed air guide plate 15. The stop block 17 is close to the air outlet baffle 6 and is used to limit the movable air guide plate 16. During the hot air drying process, hot air is blown out through the air outlet 13 and blown towards the fixed air guide plate 15. The wind force will drive the movable air guide plate 16 to overcome the elastic force of the torsion spring shaft, so that the movable air guide plate 16 rotates at a certain angle, so that the hot air can quickly enter the side air guide shells 8 on both sides. When the air is not blowing, the movable air guide plate 16 returns to its original position under the elastic force of the torsion spring shaft. At this time, one side of the movable air guide plate 16 abuts against the stop block 17.

[0032] When the drying mechanism of the flexographic printing press is in use, the hot air is heated by the hot air blower 2 and sent into the bottom shell 1 and the vertical shell 3. The hot air is blown out through the air outlet 13, and then guided by the air shroud 7, the side air guide shell 8 and the air outlet strip 9 before being blown out through the outlet on the air outlet strip 9 to dry the printing units on the flexographic printing press with hot air. Through the multi-layer setting of the air outlet 13, the synchronous drying of the stacked printing units of the flexographic printing press is achieved.

[0033] When it is necessary to adjust the height of the air outlet, the position of the side air guide shell 8 and its fixed connection components relative to the adjustment groove 4 can be adjusted by loosening the locking bolt 5, thereby adjusting the height of the air outlet. Since the size of the air gathering hood 7 is larger than the air outlet 13, the height of the air outlet of each layer can be adjusted to a certain extent, which is suitable for drying of stacked printing units of different heights.

[0034] During the hot air drying process, hot air is blown out through the air outlet 13 and blown towards the fixed air guide plate 15. The wind force will drive the movable air guide plate 16 to overcome the elastic force of the torsion spring shaft, so that the movable air guide plate 16 rotates at a certain angle, so that the hot air can quickly enter the side air guide shells 8 on both sides, so that the hot air can be blown out evenly from the air outlet strip 9, thereby improving the drying effect.

[0035] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A drying mechanism of a flexographic press, comprising: The bottom shell (1) and the hot air blower (2) are characterized in that: one side of the top of the bottom shell (1) is provided with the hot air blower (2), and the other side is provided with a vertical shell (3); one side of the vertical shell (3) is provided with an air outlet face baffle (6); a plurality of air outlet holes (13) are formed in the middle of the air outlet face baffle (6); the plurality of air outlet holes (13) are vertically and equidistantly arranged; an air gathering cover (7) is arranged outside the air outlet holes (13); side air guide shells (8) are arranged on both sides of the middle of the air gathering cover (7); lock bolts (5) are arranged at both ends of the side air guide shells (8); adjusting grooves (4) are arranged on both sides of the vertical shell (3); the screw rod portions of the lock bolts (5) pass through the adjusting grooves (4); air outlet strips (9) are arranged outside the side air guide shells (8) and the air gathering cover (7); and the air outlet strips (9) penetrate the side air guide shells (8) and the air gathering cover (7).

2. The drying mechanism of a flexographic printing machine according to claim 1, characterized in that: One side of the top of the vertical shell (3) is provided with an exhaust valve (10), and a maintenance window is formed in the bottom of one side of the bottom shell (1).

3. The drying mechanism of a flexographic printing machine according to claim 1, wherein: One side of the top of the vertical shell (3) is provided with a return pipe (11), the bottom end of the return pipe (11) is connected to one side of the bottom shell (1), and a wind baffle (12) is arranged inside the bottom shell (1) above the bottom end of the return pipe (11).

4. The drying mechanism of a flexographic printing machine according to claim 3, characterized in that: The wind baffle (12) is arranged in an inclined manner, and one end of the high slope of the wind baffle (12) is fixed to the side wall of the bottom shell (1).

5. The drying mechanism of a flexographic printing machine according to claim 1, wherein: The size of the air gathering cover (7) is greater than that of the air outlet hole (13), and a sealing strip (14) is arranged on the contact surface between the outer wall of the air gathering cover (7) and the air outlet face baffle (6).

6. The drying mechanism of a flexographic printing machine according to claim 1, wherein: A fixed air guide plate (15) is arranged in the center of the inner wall of the air gathering cover (7), and movable air guide plates (16) are arranged on both sides of the middle of the fixed air guide plate (15).

7. A drying mechanism for a flexographic printing press according to claim 6 wherein: The movable air guide plates (16) and the fixed air guide plate (15) are connected through a torsion spring rotating shaft.

8. A drying mechanism for a flexographic printing press according to claim 7, wherein: One side of the outer wall of the fixed air guide plate (15) is provided with a stop block (17) close to the air outlet face baffle (6), and the stop block (17) is used for limiting the movable air guide plates (16).

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