Cleaning device for impression cylinder of offset press

Abstract

The utility model relates to a cleaning device, belongs to the field of offset presses, and particularly relates to an impression cylinder cleaning device of an offset press, which comprises a base body, an impression cylinder body is rotatably mounted on the inner side wall of the base body, a motor is fixedly mounted on the outer side wall of the base body, and the output end of the motor is fixedly connected with the impression cylinder body. The four electric telescopic rods are fixedly mounted on the wall surface of the top of the interior of the base body; the two rolling wheels are arranged outside the connecting rod in a sleeving manner; the electric telescopic rod is started to drive the connecting rod to move downwards, when the connecting rod moves downwards, the cleaning cloth is tightly attached to the impression cylinder body, the motor is started to drive the impression cylinder body to rotate, the side wall of the impression cylinder body can completely make contact with the cleaning cloth, and therefore the impression cylinder body is cleaned, the cleaning effect is better, and the cleaning efficiency is improved. The problem that an existing impression cylinder cleaning device of the offset press is poor in cleaning effect is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of offset printing machines, in particular to an impression roller cleaning device of an offset printing machine. Background Art

[0002] The impression cylinder is a cylindrical impression body on a printing press. The impression cylinder is the most important cylinder in an offset printing press. Its surface has a very high processing precision and is acid, alkali and corrosion resistant. Its cylinder body also has high rigidity and strength and can resist impact and vibration. A gripper mechanism is installed in the idle position of the cylinder. The main functions of the impression cylinder are: (1) supporting paper and completing printing. (2) transferring paper. (3) In modern offset printing presses, the impression cylinder is the adjustment reference for the dynamic relationship of other parts.

[0003] The Chinese patent with announcement number CN217619625U discloses a cleaning device for a printing press impression roller, including an electric control box and a transmission box. A transmission box is arranged at the right end of the electric control box, and the transmission box is connected to the right end of the electric control box by bolts. The electric control box and the transmission box are fixedly connected by bolts. A machine box is arranged at the right end of the transmission box. In the patent, a water collecting device is arranged at the lower end of the cylinder body, so that water stains after cleaning can be collected during the cleaning process, so that the water stains can be discharged in time and effectively, so that the cylinder body of the device will not be damaged due to the residual water stains. In the patent, the cover plate is pushed open by the handle during the cleaning process, so that the water stains during the cleaning process can enter the interior of the main body, and then the water stains are discharged by the water outlet pipe, so that the water stains can be better collected.

[0004] The above technical solution sets a brush on the side wall of the cleaning roller, and uses the brush to clean the residue on the surface end of the impression roller. When the brush contacts the impression roller, if it is too close, the brush will be deformed, and if it is too far, it will not be able to clean the stains on the impression roller, resulting in poor effect of cleaning the impression roller. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes an impression roller cleaning device for an offset printing machine, which drives the connecting rod to move downward by starting the electric telescopic rod. When moving downward, the cleaning cloth is closely fitted with the impression roller body. The motor is started to drive the impression roller body to rotate, so that the side wall of the impression roller body can be completely in contact with the cleaning cloth, thereby cleaning the impression roller body and achieving a better cleaning effect.

[0006] The technical solution to achieve the purpose of the utility model is: a cleaning device for an impression cylinder of an offset printing press, comprising a base body, an impression cylinder body being rotatably mounted on the inner side wall of the base body, a motor being fixedly mounted on the outer side wall of the base body, an output end of the motor being fixedly connected to the impression cylinder body, and further comprising;

[0007] Four electric telescopic rods, the four electric telescopic rods are divided into two groups, the two groups of electric telescopic rods are respectively distributed on both sides of the impression cylinder body, and the electric telescopic rods are fixedly installed on the top wall surface inside the base body; the bottom side walls of the two groups of electric telescopic rods are fixedly installed with connecting rods;

[0008] Two rollers are sleeved on the outside of the connecting rod, and the outer side walls of the two rollers are wrapped with cleaning cloths.

[0009] In some embodiments, a water tank is fixedly installed on the outer side wall of the base, a water pump is arranged inside the water tank, a water pipe is fixedly installed on the inner top wall of the base, the water pipe is fixedly connected to the output end of the water pump, and a nozzle is fixedly installed on the bottom side wall of the water pipe.

[0010] In some embodiments, a water suction roller is fixedly mounted on the inner side wall of the base body, and the water suction roller is located below the impression cylinder body.

[0011] In some embodiments, a strong cleaning agent is added to the water tank.

[0012] In some embodiments, a groove is formed inside the roller.

[0013] In some embodiments, a torsion spring is sleeved on the side wall of the connecting rod, one end of the torsion spring is fixedly connected to the inner side wall of the groove, and the other end of the torsion spring is fixedly connected to the connecting rod.

[0014] Compared with the prior art, the present invention has the following significant advantages:

[0015] First, in the utility model, when cleaning the impression roller body, the electric telescopic rod is started, and the connecting rod connected to the electric telescopic rod moves downward. During the downward movement, the wall surface of the lower end of the cleaning cloth contacts the upper side wall of the impression roller body. At this time, the electric telescopic rod continues to extend downward, so that the cleaning cloth is closely attached to the impression roller body. The motor is started to drive the impression roller body to rotate, so that the side wall of the impression roller body can be completely in contact with the cleaning cloth, thereby cleaning the impression roller body. During the cleaning process, the extension length of each set of electric telescopic rods can be different, so that the cleaning cloth has different contact surfaces with the impression roller body, the utilization rate of the cleaning cloth is higher, and the cleaning effect is better.

[0016] Second, in the process of cleaning the impression roller body, the utility model turns on the water pump, wets the cleaning cloth through the spray nozzle, and at the same time, a strong cleaning agent can be added to the water tank, so that when the cleaning cloth cleans the impression roller body, the oil stain can be removed better. After cleaning, the water on the surface of the impression roller body is sucked away by the water absorption roller under the impression roller body, so as to dry the surface of the impression roller body, saving air drying time.

[0017] The invention solves the problem that the cleaning effect of the impression cylinder cleaning device of the existing offset printing machine is poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the overall structure of an impression cylinder cleaning device of an offset printing machine according to the utility model;

[0020] Figure 2 This is a cross-sectional view of an impression cylinder cleaning device of an offset printing press according to the utility model;

[0021] Figure 3 This is a schematic diagram of the cleaning structure of an impression cylinder cleaning device of an offset printing press according to the utility model;

[0022] Description of reference numerals:

[0023] 1. Base; 2. Impression roller body; 3. Water absorption roller; 4. Connecting rod; 5. Torsion spring; 6. Water tank; 61. Water pipe; 62. Nozzle; 7. Electric telescopic rod; 8. Cleaning cloth; 9. Roller; 10. Motor; 11. Groove. DETAILED DESCRIPTION

[0024] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the 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.

[0025] The utility model provides an improved printing cylinder cleaning device for an offset printing press. The technical solution of the utility model is:

[0026] like Figure 1-Figure 3As shown, a printing roller cleaning device for an offset printing machine comprises a base body 1, an inner side wall of the base body 1 is rotatably mounted with a printing roller body 2, an outer side wall of the base body 1 is fixedly mounted with a motor 10, an output end of the motor 10 is fixedly connected with the printing roller body 2, and further comprises four electric telescopic rods 7 and two rollers 9; the four electric telescopic rods 7 are divided into two groups, the two groups of electric telescopic rods 7 are respectively distributed on both sides of the printing roller body 2, and the electric telescopic rods 7 are fixedly mounted on the top wall surface inside the base body 1; the bottom side walls of the two groups of electric telescopic rods 7 are fixedly mounted with connecting rods 4; the two rollers 9 are sleeved on the outside of the connecting rods 4, and the outer side walls of the two rollers 9 are wrapped with cleaning cloths 8; when cleaning the printing rollers, the cleaning cloths 8 are cleaned. When the printing roller body 2 is moved, the electric telescopic rod 7 is started, and the connecting rod 4 connected to the electric telescopic rod 7 will move downward. During the downward movement, the wall surface of the lower end of the cleaning cloth 8 contacts the upper side wall of the printing roller body 2. At this time, the electric telescopic rod 7 continues to extend downward, so that the cleaning cloth 8 is closely fitted with the printing roller body 2. The motor 10 is started to drive the printing roller body 2 to rotate, so that the side wall of the printing roller body 2 can be completely in contact with the cleaning cloth 8, thereby cleaning the printing roller body 2. During the cleaning process, the extension length of each group of electric telescopic rods 7 can be different, so that the cleaning cloth 8 has different contact surfaces with the printing roller body 2, the utilization rate of the cleaning cloth is higher, and the cleaning effect is better.

[0027] like Figure 1 As shown, in one embodiment, a water tank 6 is fixedly installed on the outer side wall of the base 1, a water pump is arranged inside the water tank 6, a water pipe 61 is fixedly installed on the inner top wall of the base 1, the water pipe 61 is fixedly connected to the output end of the water pump, a nozzle 62 is fixedly installed on the bottom side wall of the water pipe 61, and a water absorption roller 3 is fixedly installed on the inner side wall of the base 1, and the water absorption roller 3 is located below the impression cylinder body 2; in actual use, a detergent can be added to the water tank 6, and after spraying and cleaning, the cleaning cloth 8 contains the detergent, thereby ensuring the cleaning effect of the impression cylinder body 2; in the process of cleaning the impression cylinder body 2, the water pump is turned on, and the cleaning cloth 8 is wetted by spraying through the nozzle 62, and a strong detergent can be added to the water tank 6 at the same time, so that when the cleaning cloth 8 cleans the impression cylinder body 2, the effect of removing oil stains is better, and after cleaning, the water on the surface of the impression cylinder body 2 is sucked away by the water absorption roller 3 below the impression cylinder body 2, so that the surface of the impression cylinder body 2 is wiped dry, saving air drying time.

[0028] like Figure 2 and Figure 3As shown, in one embodiment, a groove 11 is opened inside the roller 9, and a torsion spring 5 is sleeved on the side wall of the connecting rod 4, one end of the torsion spring 5 is fixedly connected to the inner side wall of the groove 11, and the other end of the torsion spring 5 is fixedly connected to the connecting rod 4; after cleaning the impression roller body 2, the electric telescopic rod 7 will shrink. At this time, through the reaction force of the torsion spring 5, the roller 9 rotates in the opposite direction, so that the cleaning cloth 8 is rewound around the side wall of the roller 9, which is convenient for storing the cleaning cloth 8 and improves the practicability of the device.

[0029] The specific working method is: when cleaning the impression roller body 2, start the electric telescopic rod 7, and the connecting rod 4 connected to the electric telescopic rod 7 will move downward. During the downward movement, the wall surface of the lower end of the cleaning cloth 8 contacts the upper side wall of the impression roller body 2. At this time, the electric telescopic rod 7 continues to extend downward, so that the cleaning cloth 8 is closely attached to the impression roller body 2, and the motor 10 is started to drive the impression roller body 2 to rotate, so that the side wall of the impression roller body 2 can be completely in contact with the cleaning cloth 8, thereby cleaning the impression roller body 2. During the cleaning process, the extension length of each set of electric telescopic rods 7 can be different, so that the cleaning cloth 8 has different contact surfaces with the impression roller body 2. , turn on the water pump, and wet the cleaning cloth 8 by spraying through the nozzle 62. At the same time, a strong detergent can be added to the water tank 6, so that when the cleaning cloth 8 cleans the impression roller body 2, the oil stain removal effect can be better. After cleaning, the water on the surface of the impression roller body 2 is absorbed by the water absorption roller 3 under the impression roller body 2, so that the surface of the impression roller body 2 is wiped dry, saving air drying time. After cleaning the impression roller body 2, the electric telescopic rod 7 will shrink. At this time, through the reaction force of the torsion spring 5, the roller 9 rotates in the opposite direction, so that the cleaning cloth 8 is rewound around the side wall of the roller 9, which is convenient for storing the cleaning cloth 8 and improves the practicality of the device.

[0030] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. An impression cylinder cleaning device for an offset printing press, comprising a base (1), an impression cylinder body (2) being rotatably mounted on the inner side wall of the base (1), a motor (10) being fixedly mounted on the outer side wall of the base (1), an output end of the motor (10) being fixedly connected to the impression cylinder body (2), characterized in that: Also includes; Four electric telescopic rods (7), the four electric telescopic rods (7) are divided into two groups, the two groups of electric telescopic rods (7) are respectively distributed on both sides of the impression roller body (2), and the electric telescopic rods (7) are fixedly mounted on the top wall surface inside the base body (1); the bottom side walls of the two groups of electric telescopic rods (7) are both fixedly mounted with connecting rods (4); Two rollers (9), the two rollers (9) are sleeved on the outside of the connecting rod (4), and the outer side walls of the two rollers (9) are wrapped with cleaning cloths (8).

2. The device for cleaning the impression cylinder of an offset printing press according to claim 1, characterized in that: A water tank (6) is fixedly mounted on the outer side wall of the base (1), a water pump is arranged inside the water tank (6), a water pipe (61) is fixedly mounted on the inner top wall of the base (1), the water pipe (61) is fixedly connected to the output end of the water pump, and a nozzle (62) is fixedly mounted on the bottom side wall of the water pipe (61).

3. The device for cleaning the impression cylinder of an offset printing press according to claim 1, characterized in that: A water absorption roller (3) is fixedly mounted on the inner side wall of the base body (1), and the water absorption roller (3) is located below the impression roller body (2).

4. The device for cleaning the impression cylinder of an offset printing press according to claim 2, characterized in that: A strong cleaning agent is added into the water tank (6).

5. The device for cleaning the impression cylinder of an offset printing press according to claim 1, characterized in that: A groove (11) is formed inside the roller (9).

6. The device for cleaning the impression cylinder of an offset printing press according to claim 5, characterized in that: The side wall of the connecting rod (4) is sleeved with a torsion spring (5), one end of the torsion spring (5) is fixedly connected to the inner side wall of the groove (11), and the other end of the torsion spring (5) is fixedly connected to the connecting rod (4).

Images