Novel plate cylinder capable of stably running at high speed

Abstract

The utility model discloses a novel plate cylinder stable in high-speed operation, which comprises a plate cylinder body, a plate cylinder body mounting groove is arranged on the side surface of the plate cylinder body, one end of the plate cylinder body is fixedly connected with a mounting shaft I, the side surface of the mounting shaft I is movably connected with a cylinder bearers I, and the cylinder bearers I are fixedly connected with the plate cylinder body. One end of the plate cylinder body is fixedly connected with a second mounting shaft, and the side surface of the second mounting shaft is movably connected with a second cylinder bearer. Through the split design of the cylinder bearers I and the cylinder bearers II, the cylinder bearers I and the cylinder bearers II can be independently made of special materials which are wear-resistant and good in rigidity and are subjected to finish machining and special treatment, the service life of the cylinder bearers I and the cylinder bearers II can be effectively prolonged, and the operation and maintenance cost of a printing machine can be reduced; during printing, pressure impact at the notch of the printing cylinder can be buffered through the first cylinder bearers and the second cylinder bearers, stability of printing pressure is guaranteed, and stripes and double images in printed matter are prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to printing technical field, and specifically relates to a novel plate cylinder with high-speed operation stability. BACKGROUND

[0002] The plate cylinder is a core component of the printing machine, which is generally composed of a plate, a gasket, a plate clamping mechanism, a plate connecting mechanism and a cylinder body. The cylinder body is a component directly bearing printing, which is composed of an effective printing area and an empty gap (notch). The effective printing area is used for printing or transferring graphics, and the empty gap is mainly used for installing a rubber blanket tensioning device and a plate clamping mechanism.

[0003] The existing 300 double-opening multi-color lithographic printing machine model has a measuring roller pillow in the structure of the plate cylinder. The roller pillow is a non-contact type, that is, the roller pillow is integrated with the cylinder body and is made of the same material as the cylinder body, usually high-grade cast iron, nodular cast iron or wear-resistant cast iron. In work, the working surface between the plate cylinder and the rubber cylinder is in pressure contact. In printing, because the roller pillow does not contact, the printing pressure is lost at the notch of the cylinder body, and the cylinder body will drop under the action of its own weight, resulting in vibration once per revolution. Due to the unstable printing pressure, phenomena such as stripes and ghosting are prone to occur in the printed matter, resulting in low printing accuracy. SUMMARY

[0004] The utility model solves the technical problem that the existing printing pressure is unstable, and phenomena such as stripes and ghosting are prone to occur in the printed matter, resulting in low printing accuracy.

[0005] To solve the above technical problems, one technical scheme of the utility model is provided: a novel plate cylinder with high-speed operation stability is provided, which comprises a plate cylinder body, a plate cylinder cylinder body mounting groove is arranged on the side surface of the plate cylinder body, an installation shaft one is fixedly connected to one end of the plate cylinder body, a roller pillow one is movably connected to the side surface of the installation shaft one, an installation shaft two is fixedly connected to one end of the plate cylinder body, a roller pillow two is movably connected to the side surface of the installation shaft two, an axial through hole is arranged at one end of the plate cylinder body, and a pre-tightening shaft is arranged on the bottom inner wall of the plate cylinder cylinder body mounting groove.

[0006] Through the above technical scheme, the roller pillow one and the roller pillow two installed in a split type with the plate cylinder body can be processed by precision machining and special process, so that the roller pillow one and the roller pillow two are more wear-resistant and can effectively prolong their service life. Meanwhile, the roller pillow two adopts a contact type, which can buffer the pressure impact at the notch of the plate cylinder cylinder body mounting groove in printing, ensures the stability of the printing pressure, and prevents phenomena such as stripes and ghosting from occurring in the printed matter.

[0007] The utility model further sets up, the top inner wall of printing plate cylinder body installation groove is connected with the bite lower clamping plate through bolt, the side surface of bite lower clamping plate is connected with bite upper clamping plate through bolt.

[0008] Through the above technical scheme, the bite lower clamping plate can be installed into the printing plate cylinder body installation groove through bolt, and the bite upper clamping plate can be installed onto the bite upper clamping plate through bolt.

[0009] The utility model further sets up, the bottom inner wall of printing plate cylinder body installation groove is connected with the rear lower clamping plate through bolt, and the side surface of rear lower clamping plate is connected with rear upper clamping plate through bolt.

[0010] The utility model further sets up, the number of axial through -hole is a plurality, and installation shaft one, installation shaft two, roll pillow one, roll pillow two all are with printing plate cylinder body coaxial arrangement.

[0011] Through the above technical scheme, installation shaft one, installation shaft two, roll pillow one and roll pillow two can rotate concentrically with printing plate cylinder body, which avoids affecting printing.

[0012] The utility model further sets up, printing plate cylinder body installation groove is along the outer circumference and is set up with the gap zoom.

[0013] Through the above technical scheme, the gap zoom setting can reach the purpose of increasing the printing length of its circumference, so that the nominal total diameter of printing plate cylinder body after wrapping PS plate packing is kept unchanged, and the printing material width length is up to 700-810mm.

[0014] The utility model further sets up, the side surface of roll pillow one is connected with screw one, and the side surface of screw one is connected with printing plate cylinder body.

[0015] Through the above technical scheme, screw one can install roll pillow one, which is installed in two parts, onto printing plate cylinder body.

[0016] The utility model further sets up, the side surface of roll pillow two is connected with screw two, and the side surface of screw two is connected with printing plate cylinder body.

[0017] Through the above technical scheme, screw two can install roll pillow two, which is installed in two parts, onto printing plate cylinder body.

[0018] The utility model has the advantages of the following:

[0019] ​(1) the plate cylinder body two ends are externally independent roll pillow one and roll pillow two, that is, the roll pillow and the cylinder body are split type, after improvement, the roll pillow can be selected independently by using special material which is good in wear resistance and rigidity and is processed specially, so that the service life of the roll pillow can be prolonged effectively and the operation and maintenance cost of the printing machine can be reduced.

[0020] (2) the plate cylinder cylinder body mounting groove part is provided with a notch along the outer circumference, so as to increase the printing length of the circumference, and the upper clamping plate, the lower clamping plate, the rear upper clamping plate and the rear lower clamping plate are arranged compactly, so that the function of the components inside the notch is not changed, and the work needs of plate mounting, plate adjusting and paper biting are better met.

[0021] (3) the cylinder body is provided with a plurality of axial through holes inside, so that the stability of the machine operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a first view structure diagram of the novel plate cylinder which runs stably at high speed according to the present application;

[0023] Figure 2 is a partial structure explosion diagram of the novel plate cylinder which runs stably at high speed according to the present application;

[0024] Figure 3 is Figure 1 is an enlarged view of structure A in figure 1;

[0025] Figure 4 is a working principle diagram of roll pillow one and roll pillow two of the novel plate cylinder which runs stably at high speed according to the present application.

[0026] Fig. 1 is a structure diagram of the novel plate cylinder which runs stably at high speed according to the present application; Fig. 2 is a structure diagram of the novel plate cylinder which runs stably at high speed according to the present application; Fig. 3 is a structure diagram of the novel plate cylinder which runs stably at high speed according to the present application; Fig. 4 is a structure diagram of the novel plate cylinder which runs stably at high speed according to the present application. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0028] As Figures 1-4As shown, this embodiment of a novel high-speed, stable printing plate cylinder includes a printing plate cylinder body 1. A printing plate cylinder mounting groove 13 is provided on the side surface of the printing plate cylinder body 1. The printing plate cylinder mounting groove 13 has a notch that is scaled up or down along its outer circumference. This scaling up or down notch increases the circumferential printing length, ensuring that the nominal total diameter of the printing plate cylinder after wrapping the PS plate liner is within a certain range. Without changing the dimensions, the substrate length can reach 700-810mm, improving printing efficiency. The top inner wall of the printing plate cylinder mounting groove 13 is bolted to a lower gripper plate 2, and the side surface of the lower gripper plate 2 is bolted to an upper gripper plate 3. The bottom inner wall of the printing plate cylinder mounting groove 13 is bolted to a lower rear gripper plate 5, and the side surface of the lower rear gripper plate 5 is bolted to an upper rear gripper plate 4. One end of the printing plate cylinder body 1 is fixedly connected to a mounting shaft one, and the side surface of the mounting shaft one is movably connected to a roller bolster one 12. One end of the printing plate cylinder body 1 is fixedly connected to a mounting shaft two, and the side surface of the mounting shaft two is movably connected to a roller bolster two 14. This is a split-design installation. Roller 12 and Roller 24 can be processed separately using different processes to extend their service life, reduce maintenance and lower repair costs. One end of the printing cylinder body 1 is provided with an axial through hole 16. The bottom inner wall of the printing cylinder mounting groove 13 is provided with a pre-tightening shaft 6. There are multiple axial through holes 16. Mounting shaft 1, mounting shaft 2, roller 12, and roller 24 are all coaxially arranged with the printing cylinder body 1. The side surface of roller 12 is threaded with screw 11, and the side surface of screw 11 is threaded with the printing cylinder body 1. The side surface of roller 24 is threaded with screw 25, and the side surface of screw 25 is threaded with the printing cylinder body 1.

[0029] The working principle of this utility model is as follows: When installing roller bolster 12 and roller bolster 24 on the printing plate cylinder body 1, roller bolster 12 is sleeved on mounting shaft 1, and screw 11 is used to connect the sleeved roller bolster 12 to the printing plate cylinder body 1. Roller bolster 24 is sleeved on mounting shaft 2, and screw 25 is used to install the sleeved roller bolster 24 to the printing plate cylinder body 1 together. During printing, roller bolster 12 and roller bolster 24 at both ends of the printing plate cylinder body 1 contact the two rollers of the rubber roller 17, so that the ink is transferred well. The printed matter has a solid imprint, full but not bloated halftone dots, and clear and rich tonal gradations, which not only improves the performance of the machine, but also ensures good printing quality.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A new plate cylinder for high speed operation with smooth running, comprising a plate cylinder body (1), characterized in that: The side surface of the printing plate cylinder body (1) is provided with a printing plate cylinder body mounting groove (13), one end of the printing plate cylinder body (1) is fixedly connected with a mounting shaft one, the side surface of the mounting shaft one is movably connected with a bolster one (12), one end of the printing plate cylinder body (1) is fixedly connected with a mounting shaft two, the side surface of the mounting shaft two is movably connected with a bolster two (14), one end of the printing plate cylinder body (1) is provided with an axial through hole (16), and the bottom inner wall of the printing plate cylinder body mounting groove (13) is provided with a pre-tightening shaft (6).

2. A novel plate cylinder for high speed printing with smooth operation as claimed in claim 1, wherein The top inner wall of the printing plate cylinder body mounting groove (13) is connected with a bite lower clamping plate (2) through bolts, and the side surface of the bite lower clamping plate (2) is connected with a bite upper clamping plate (3) through bolts.

3. A novel plate cylinder for high speed printing with stability as claimed in claim 1 wherein, The bottom inner wall of the printing plate cylinder body mounting groove (13) is connected with a rear lower clamping plate (5) through bolts, and the side surface of the rear lower clamping plate (5) is connected with a rear upper clamping plate (4) through bolts.

4. A novel plate cylinder for high speed printing with stability as claimed in claim 1 wherein, The number of the axial through hole (16) is multiple, and the mounting shaft one, the mounting shaft two, the bolster one (12) and the bolster two (14) are coaxially arranged with the printing plate cylinder body (1).

5. A novel plate cylinder for high speed printing with stability as claimed in claim 1 wherein, The printing plate cylinder body mounting groove (13) is provided with a notch scaling along the outer circumference.

6. A novel plate cylinder for high speed printing with stability as claimed in claim 1 wherein, The side surface of the bolster one (12) is threadedly connected with a screw one (11), and the side surface of the screw one (11) is threadedly connected with the printing plate cylinder body (1).

7. A novel plate cylinder for high speed printing with stability as claimed in claim 1 wherein, The side surface of the bolster two (14) is threadedly connected with a screw two (15), and the side surface of the screw two (15) is threadedly connected with the printing plate cylinder body (1). The side surface of the bolster two (14) is threadedly connected with a screw two (15), and the side surface of the screw two (15) is threadedly connected with the printing plate cylinder body (1).

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