Paper extraction and expansion compensation system of rotary press

Abstract

The utility model relates to the technical field of printing, in particular to a rotary press paper extraction and expansion compensation system which comprises a rack, a rotary press body, a paper humidifying mechanism, a conveying assembly humidifying mechanism, an environment humidifying mechanism and a water conveying mechanism. The input end of the main water delivery pipe is communicated with a water source, and the output end of the main water delivery pipe is communicated with the paper humidifying mechanism; the booster pump is arranged on the main water delivery pipe; the paper humidifying mechanism is installed on the rack and arranged at the discharging end of a drying oven of the rotary press body. The paper humidifying mechanism and the conveying assembly humidifying mechanism are arranged, the paper is prevented from drawing and expanding due to humidity change by humidifying printed products, the environment humidifying mechanism is arranged, static electricity and dust are prevented from being generated by humidifying the workshop environment, and the printing quality is improved.

Description

Technical Field

[0001] The present application relates to the field of printing technology, and in particular to a paper expansion compensation system for a rotary printing press. Background Art

[0002] A rotary printing press is a machine that transfers the graphic information on the printing plate to the printed material through a rotating printing plate cylinder. The printing plate cylinder is coated with ink, which is transferred to the medium of the printed material through contact with the impression cylinder. Currently, rotary printing presses are mainly used for large-scale, high-speed, continuous production printing work, usually for the production of large quantities of printed materials such as newspapers, magazines, books, catalogs and advertising brochures.

[0003] During the printing operation of the rotary printing press, first, the paper roll is installed on the roller frame and guided along the roller system to the paper feeding part of the printing rotary press; then, the paper passes through the gap between the printing plate cylinder and the impression cylinder at high speed, and a certain pressure is formed between the printing plate cylinder and the impression cylinder. Through the transfer of ink or ink, the graphics and text are printed on the paper. After the paper is printed in the printing part, it enters the drying part and the ink on the paper is quickly dried in the oven; after drying, the paper is cut by the cutting mechanism to meet the required size; finally, the paper is folded and bound.

[0004] With regard to the above-mentioned related technologies, during the printing process of the rotary printing press, in order to allow the printed ink to dry quickly, the printed paper is dried in an oven. The printed paper is prone to swelling and shrinking, which affects the product quality of the printed product. Utility Model Content

[0005] In order to improve the product quality of printed products, the present application provides a paper expansion compensation system for a rotary printing press.

[0006] The paper expansion compensation system of a rotary printing press provided in the present application adopts the following technical solution:

[0007] A paper expansion compensation system for a rotary printing press comprises a frame, a rotary printing press body, a paper humidifying mechanism and a water supply mechanism, wherein the rotary printing press body is mounted on the frame;

[0008] The water delivery mechanism includes a water delivery main pipe and a booster pump, the input end of the water delivery main pipe is connected to a water source, and the output end is connected to a paper humidification mechanism; the booster pump is arranged on the water delivery main pipe;

[0009] The paper humidifying mechanism is installed on the frame, and the paper humidifying mechanism is arranged at the oven discharge end of the rotary printing machine body.

[0010] By adopting the above technical solution, after the paper is dried in the oven, the paper humidifying mechanism arranged on the rack at the discharge end of the oven sprays and humidifies the paper, the water main pipe is adjusted, the input end of the water main pipe is connected to the water source, the water flow is pressurized by the booster pump on the water main pipe, and is transmitted to the paper humidifying mechanism connected to the output end of the water main pipe, and the paper humidifying mechanism humidifies the paper; the set paper humidifying mechanism improves the swelling phenomenon of the paper due to humidity changes, and improves the product quality of printed products.

[0011] In a specific possible implementation manner, the paper humidifying mechanism comprises a paper upper surface humidifying component, and the paper upper surface humidifying component is arranged above the oven discharge end of the rotary printing press body;

[0012] The paper upper surface humidifying assembly comprises an upper high-pressure delivery pipe and a plurality of upper atomizing nozzles, wherein the upper high-pressure delivery pipe is installed on the frame and is connected to the output end of the water delivery main pipe;

[0013] A plurality of upper atomizing nozzles are arranged along the length direction of the upper high-pressure delivery pipe, and the upper atomizing nozzles are communicated with the inner cavity of the upper high-pressure delivery pipe.

[0014] By adopting the above technical solution, the upper high-pressure delivery pipe is connected to the output end of the water main pipe, and the upper high-pressure delivery pipe is adjusted, so that water is transmitted to the upper atomizing nozzle through the upper high-pressure delivery pipe, and then water mist is formed at the upper atomizing nozzle and evenly sprayed on the upper surface of the dried paper; the paper upper surface humidifying component is set to spray and humidify the upper surface of the paper through the upper atomizing nozzle, thereby improving the humidity of the paper, thereby improving the product quality of the printed product.

[0015] In a specific possible implementation mode, the paper upper surface humidifying assembly further includes a first water delivery valve, and the first water delivery valve is arranged near the water inlet end of the upper high-pressure delivery pipe.

[0016] By adopting the above technical solution, the first water delivery valve is provided to control the high-pressure water mist flow of the upper atomizing nozzle, thereby controlling the humidity of the paper surface to remain within a suitable range, thereby improving the product quality of printed products.

[0017] In a specific possible implementation manner, the paper humidifying mechanism comprises a paper lower surface humidifying assembly, and the paper lower surface humidifying assembly is arranged below the oven discharge end of the rotary printing press body;

[0018] The paper lower surface humidifying assembly comprises a lower high-pressure delivery pipe and a plurality of lower atomizing nozzles, wherein the lower high-pressure delivery pipe is installed on the frame and is connected to the output end of the water delivery main pipe;

[0019] A plurality of lower atomizing nozzles are arranged along the length direction of the lower high-pressure delivery pipe, and the lower atomizing nozzles are communicated with the inner cavity of the lower high-pressure delivery pipe.

[0020] By adopting the above technical scheme, the lower high-pressure delivery pipe is connected to the output end of the water main pipe, and the lower high-pressure delivery pipe is adjusted, and water is transmitted to the lower atomizing nozzle through the lower high-pressure delivery pipe, and then high-pressure water mist is formed at the lower atomizing nozzle, and is evenly sprayed on the lower surface of the dried paper; the paper lower surface humidifying component is set, and the lower surface of the paper is sprayed and humidified through the lower atomizing nozzle, so as to improve the humidity of the paper, thereby improving the product quality of the printed product.

[0021] In a specific possible implementation mode, the paper lower surface humidifying assembly further includes a second water delivery valve, and the second water delivery valve is arranged near the water inlet end of the lower high-pressure delivery pipe.

[0022] By adopting the above technical solution, the second water delivery valve is set to control the high-pressure water mist flow of the lower atomizing nozzle, thereby controlling the humidity of the paper surface under the paper to remain within a suitable range, reducing the swelling of the paper and improving the product quality of the printed product.

[0023] In a specific possible implementation scheme, the water delivery mechanism further includes an ultrafiltration water purifier, the water inlet end of the ultrafiltration water purifier is connected to an external water source, and the water outlet end of the ultrafiltration water purifier is connected to the water inlet end of the water delivery main.

[0024] By adopting the above technical solution, the ultrafiltration water purifier is set to purify the external water source and transmit it to the water main, reducing impurities in the water, preventing the upper and lower atomizing nozzles from being blocked, and improving the humidification effect.

[0025] In a specific embodiment, it further includes an environmental humidification mechanism, which includes a hanging rack, a hanging delivery pipe, a flow valve and a plurality of first atomizing nozzles;

[0026] The hanging bracket is installed on the top wall of the production workshop, the hanging delivery pipe is fixedly connected to the hanging bracket, and the water inlet end of the hanging delivery pipe is connected to the water outlet end of the water main pipe;

[0027] The plurality of first atomizing nozzles are evenly distributed along the side wall of the hanging delivery pipe, and the plurality of first atomizing nozzles are connected to the inner cavity of the hanging delivery pipe;

[0028] The flow valve is installed on the hanging delivery pipe, and the flow valve is arranged close to the water inlet end of the hanging delivery pipe.

[0029] By adopting the above technical solution, an environmental humidification mechanism is set up, and water is transmitted to the first atomizing nozzle through the hanging delivery pipe, and water mist is formed at the first atomizing nozzle to spray the workshop and humidify the production environment. At the same time, the set flow valve controls the high-pressure spray flow of the first atomizing nozzle to keep the environmental humidity within an appropriate range, reduce the generation of static electricity and dust, avoid the impact of static electricity and workshop dust on the quality of printed products, and thus improve the printing quality.

[0030] In a specific embodiment, the transmission component humidification mechanism includes a bracket, a water pipe, a regulating valve and a plurality of second atomizing nozzles;

[0031] The bracket is installed on the frame, the water pipe is installed on the bracket, and the water pipe is distributed along the length direction of the rotary printing machine body transmission component;

[0032] A plurality of the second atomizing nozzles are evenly distributed along the length direction of the side wall of the water pipe, and the second atomizing nozzles are communicated with the inner cavity of the water pipe, and the water inlet end of the water pipe is connected to the water outlet end of the water main pipe;

[0033] The regulating valve is installed on the water pipe, and the regulating valve is arranged close to the water inlet end of the water pipe.

[0034] By adopting the above technical solution, the water main pipe transmits the filtered water to the water pipe, and water mist is sprayed out at the second atomizing nozzle connected to the inner cavity of the water pipe, thereby realizing humidification of the printed products transported on the transmission component of the rotary printing press. At the same time, the regulating valve is set to control the high-pressure spray flow of the second atomizing nozzle, so that the humidity of the printed products is maintained within an appropriate range, reducing the swelling of the paper, thereby improving the printing quality.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] 1. The paper humidifying mechanism and the conveying component humidifying mechanism humidify the printed products to prevent the paper from swelling due to humidity changes, thereby improving the quality of the finished printed products.

[0037] 2. The environmental humidification mechanism is set up to humidify the workshop environment to prevent the generation of static electricity and dust, thereby avoiding the impact of static electricity and dust on printed products, reducing waste generation and improving printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The invention is a schematic diagram of the overall structure of a paper expansion compensation system of a rotary printing press.

[0039] Figure 2 yes Figure 1The enlarged view of part A in the middle is intended to illustrate the humidifying components on the upper surface of the paper and the humidifying components on the lower surface of the paper.

[0040] Description of the drawings: 1. Frame; 2. Rotary printing machine body; 3. Paper humidifying mechanism; 31. Paper upper surface humidifying assembly; 311. Upper high-pressure delivery pipe; 312. Upper atomizing nozzle; 313. First water delivery valve; 32. Paper lower surface humidifying assembly; 321. Lower high-pressure delivery pipe; 322. Lower atomizing nozzle; 323. Second water delivery valve; 4. Water delivery mechanism; 41. Water delivery main; 42. Booster pump; 43. Ultrafiltration water purifier; 5. Environmental humidifying mechanism; 51. Hanging rack; 52. Hanging delivery pipe; 53. First atomizing nozzle; 54. Flow valve; 6. Transmission assembly humidifying mechanism; 61. Bracket; 62. Water pipe; 63. Adjusting valve; 64. Second atomizing nozzle. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 and 2 This application is described in further detail.

[0042] The embodiment of the present application discloses a paper expansion compensation system for a rotary printing press.

[0043] Reference Figure 1 A paper expansion compensation system for a rotary printing press includes a frame 1, a rotary printing press body 2, a paper humidifying mechanism 3, a water delivery mechanism 4, an environment humidifying mechanism 5 and a transmission component humidifying mechanism 6; the rotary printing press body 2 is installed on the frame 1.

[0044] Reference Figure 1 The water delivery mechanism 4 includes a water delivery main pipe 41, a booster pump 42 and an ultrafiltration water purifier 43. The ultrafiltration water purifier 43 is connected to an external water source. The input end of the water delivery main pipe 41 is connected to the ultrafiltration water purifier 43, and the output end is connected to the paper humidification mechanism 3; the booster pump 42 is arranged on the water delivery main pipe 41; the water flows into the ultrafiltration water purifier 43, and is input to the input end of the water delivery main pipe 41 after purification and filtration. The booster pump 42 on the water delivery main pipe 41 pressurizes the water flow and transmits it to the paper humidification mechanism 3 connected to the output end of the water delivery main pipe 41, and the water flows through the paper humidification mechanism 3 to humidify the paper.

[0045] Reference Figure 1 and Figure 2 The paper humidifying mechanism 3 is arranged on the frame 1 at the discharge end of the oven of the rotary printing machine body 2, and the paper humidifying mechanism 3 includes a paper upper surface humidifying component 31 and a paper lower surface humidifying component 32;

[0046] The filtered and purified water is pressurized by a booster pump 42 on a water delivery main pipe 41. A plurality of connectors are installed at the output end of the water delivery main pipe 41. The output ends of the plurality of connectors are respectively connected to the paper upper surface humidification component 31, the paper lower surface humidification component 32, the environment humidification mechanism 5 and the transmission component humidification mechanism 6.

[0047] The paper upper surface humidifying assembly 31 is arranged above the frame 1 at the discharge end of the oven of the rotary printing machine body 2. The paper upper surface humidifying assembly 31 includes an upper high-pressure delivery pipe 311, a first water delivery valve 313 and a plurality of upper atomizing nozzles 312. The upper high-pressure delivery pipe 311 is installed on the frame 1. The first water delivery valve 313 is arranged near the water inlet end of the upper high-pressure delivery pipe 311. The upper atomizing nozzle 312 is threadedly installed on the upper high-pressure delivery pipe 311, and the plurality of upper atomizing nozzles 312 are evenly arranged along the length direction of the upper high-pressure delivery pipe 311. The upper atomizing nozzles 312 are arranged on the upper high-pressure delivery pipe 311. 312 is connected to the inner cavity of the upper high-pressure delivery pipe 311, the upper atomizing nozzle 312 faces the upper surface of the paper, the water delivery main pipe 41 delivers the pressurized water flow to the upper high-pressure delivery pipe 311, the water flows through the upper high-pressure delivery pipe 311 to form high-pressure water mist at the upper atomizing nozzle 312, and the first water delivery valve 313 adjusts the high-pressure water mist flow of the upper atomizing nozzle 312, so that the high-pressure spray sprayed by the upper atomizing nozzle 312 humidifies the upper surface of the paper after drying in the oven and keeps it within a suitable humidity range, reducing the swelling phenomenon, thereby improving the quality of printed products;

[0048] The paper lower surface humidifying assembly 32 is arranged below the oven discharge end of the rotary printing machine body 2, and the paper lower surface humidifying assembly 32 comprises a lower high-pressure delivery pipe 321, a second water delivery valve 323 and a plurality of lower atomizing nozzles 322; the lower high-pressure delivery pipe 321 is installed on the frame 1, the second water delivery valve 323 is arranged near the water inlet end of the upper high-pressure delivery pipe 311, the lower atomizing nozzle 322 is threadedly installed on the lower high-pressure delivery pipe 321, and the plurality of lower atomizing nozzles 322 are arranged along the length direction of the lower high-pressure delivery pipe 321, and the lower atomizing nozzles 322 The lower atomizing nozzle 322 is connected to the inner cavity of the lower high-pressure delivery pipe 321, and is arranged toward the lower surface of the paper. The water delivery main pipe 41 delivers the pressurized water flow to the lower high-pressure delivery pipe 321. The water flows through the lower high-pressure delivery pipe 321 to form high-pressure water mist at the lower atomizing nozzle 322. The second water delivery valve 323 adjusts the high-pressure water mist flow of the lower atomizing nozzle 322, so that the high-pressure spray sprayed by the lower atomizing nozzle 322 humidifies the lower surface of the paper after drying in the oven and keeps it within a suitable humidity range, thereby reducing the occurrence of swelling phenomenon and improving the quality of printed products.

[0049] Reference Figure 1The environmental humidification mechanism 5 includes a hanging frame 51, a hanging delivery pipe 52, a flow valve 54 and a plurality of first atomizing nozzles 53; the hanging frame 51 is installed on the top wall of the production workshop, the hanging delivery pipe 52 is fixedly connected to the hanging frame 51, the flow valve 54 is arranged near the water inlet end of the hanging delivery pipe 52, and the plurality of first atomizing nozzles 53 are evenly distributed along the hanging delivery pipe 52 and are threadedly connected to the hanging delivery pipe 52. The plurality of first atomizing nozzles 53 are connected to the inner cavity of the hanging delivery pipe 52, and the hanging delivery pipe 52 is connected to the inner cavity of the hanging delivery pipe 52. The water inlet end of the delivery pipe 52 is connected to the water outlet end of the water delivery main pipe 41; the water delivery main pipe 41 delivers the pressurized water flow to the hanging delivery pipe 52, and the water flows through the hanging delivery pipe 52 to form high-pressure water mist at the first atomizing nozzle 53. The flow valve 54 adjusts the high-pressure water mist flow of the first atomizing nozzle 53, so that the high-pressure mist sprayed by the first atomizing nozzle 53 humidifies the environment of the production workshop and maintains it within a suitable humidity range, so as to reduce the generation of static electricity and dust and improve the quality of printed products;

[0050] The transmission component humidification mechanism 6 includes a bracket 61, a water pipe 62, a regulating valve 63 and a plurality of second atomizing nozzles 64; the bracket 61 is mounted on the frame 1, the water pipe 62 is mounted on the bracket 61, and the water pipe 62 is distributed along the length direction of the transmission component of the rotary printing machine body 2; the plurality of second atomizing nozzles 64 are evenly distributed along the length direction of the water pipe 62, the second atomizing nozzles 64 are threadedly connected to the water pipe 62, and the second atomizing nozzles 64 are connected to the inner cavity of the water pipe 62; the water inlet end of the water pipe 62 It is connected to the water outlet end of the water main pipe 41; the water main pipe 41 conveys the pressurized water flow to the water pipe 62, and the water pipe 62 conveys the water flow to the second atomizing nozzle 64. The water flow forms high-pressure water mist at the second atomizing nozzle 64 to humidify the printed products transported on the transmission assembly of the rotary printing press. A regulating valve 63 is provided on the water pipe 62 near the water inlet end to adjust the high-pressure water mist flow of the second atomizing nozzle 64, so as to maintain the appropriate humidity of the printed products and improve the quality of the printed products.

[0051] The implementation principle of the paper expansion compensation system of a rotary printing machine in the present application is as follows: an ultrafiltration water purifier 43 is connected to an external water source to filter and purify the external water source, an input end of a water main pipe 41 is connected to the ultrafiltration water purifier 43, the filtered water is pressurized on a booster provided on the water main pipe 41, and the water main pipe 41 delivers the pressurized water flow to the paper humidifying mechanism 3, the environment humidifying mechanism 5 and the transmission component humidifying mechanism 6 respectively, to humidify the printed products and the production environment, thereby reducing the occurrence of the expansion phenomenon of the printed products and further improving the product quality of the printed products.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A paper expansion compensation system for a rotary printing press, characterized in that: It comprises a frame (1), a rotary printing machine body (2), a paper humidifying mechanism (3) and a water supply mechanism (4), wherein the rotary printing machine body (2) is mounted on the frame (1); The water delivery mechanism (4) comprises a water delivery main pipe (41) and a booster pump (42); the input end of the water delivery main pipe (41) is connected to a water source, and the output end is connected to the paper humidifying mechanism (3); the booster pump (42) is arranged on the water delivery main pipe (41); The paper humidifying mechanism (3) is installed on the frame (1), and the paper humidifying mechanism (3) is arranged at the oven discharge end of the rotary printing machine body (2).

2. The paper expansion compensation system for a rotary printing press according to claim 1, characterized in that: The paper humidifying mechanism (3) comprises a paper upper surface humidifying component (31), and the paper upper surface humidifying component (31) is arranged above the oven discharge end of the rotary printing machine body (2); The paper upper surface humidifying assembly (31) comprises an upper high-pressure delivery pipe (311) and a plurality of upper atomizing nozzles (312); the upper high-pressure delivery pipe (311) is installed on the frame (1); and the upper high-pressure delivery pipe (311) is connected to the output end of the water delivery main pipe (41); The plurality of upper atomizing nozzles (312) are arranged along the length direction of the upper high-pressure delivery pipe (311), and the upper atomizing nozzles (312) are connected to the inner cavity of the upper high-pressure delivery pipe (311).

3. The paper expansion compensation system for a rotary printing press according to claim 2, characterized in that: The paper upper surface humidifying component (31) further comprises a first water delivery valve (313), wherein the first water delivery valve (313) is arranged near the water inlet end of the upper high-pressure delivery pipe (311).

4. The paper expansion compensation system for a rotary printing press according to claim 1, characterized in that: The paper humidifying mechanism (3) comprises a paper lower surface humidifying component (32), and the paper lower surface humidifying component (32) is arranged below the oven discharge end of the rotary printing machine body (2); The paper lower surface humidifying assembly (32) comprises a lower high-pressure delivery pipe (321) and a plurality of lower atomizing nozzles (322); the lower high-pressure delivery pipe (321) is installed on the frame (1); and the lower high-pressure delivery pipe (321) is connected to the output end of the water delivery main pipe (41); The plurality of lower atomizing nozzles (322) are arranged along the length direction of the lower high-pressure delivery pipe (321), and the lower atomizing nozzles (322) are connected to the inner cavity of the lower high-pressure delivery pipe (321).

5. The paper expansion compensation system for a rotary printing press according to claim 4, characterized in that: The paper lower surface humidifying assembly (32) further comprises a second water delivery valve (323), and the second water delivery valve (323) is arranged near the water inlet end of the lower high-pressure delivery pipe (321).

6. The paper expansion compensation system for a rotary printing press according to claim 1, characterized in that: The water delivery mechanism (4) further comprises an ultrafiltration water purifier (43), the water inlet of the ultrafiltration water purifier (43) being connected to an external water source, and the water outlet of the ultrafiltration water purifier (43) being connected to the water inlet of the water delivery main pipe (41).

7. The paper expansion compensation system for a rotary printing press according to claim 1, characterized in that: It also includes an environmental humidification mechanism (5), wherein the environmental humidification mechanism (5) includes a hanging frame (51), a hanging delivery pipe (52), a flow valve (54) and a plurality of first atomizing nozzles (53); The hanging bracket (51) is installed on the top wall of the production workshop, the hanging delivery pipe (52) is fixedly connected to the hanging bracket (51), and the water inlet end of the hanging delivery pipe (52) is connected to the water outlet end of the water main pipe (41); The plurality of first atomizing nozzles (53) are evenly distributed along the side wall of the hanging conveying pipe (52), and the plurality of first atomizing nozzles (53) are connected to the inner cavity of the hanging conveying pipe (52); The flow valve (54) is installed on the hanging conveying pipe (52), and the flow valve (54) is arranged close to the water inlet end of the hanging conveying pipe (52).

8. The paper expansion compensation system for a rotary printing press according to claim 1, characterized in that: It also includes a transmission component humidifying mechanism (6); the transmission component humidifying mechanism (6) includes a bracket (61), a water pipe (62), a regulating valve (63) and a plurality of second atomizing nozzles (64); The bracket (61) is mounted on the frame (1), the water pipe (62) is mounted on the bracket (61), and the water pipe (62) is distributed along the length direction of the transmission component of the rotary printing machine body (2); A plurality of the second atomizing nozzles (64) are evenly distributed along the length direction of the side wall of the water pipe (62), and the second atomizing nozzles (64) are connected to the inner cavity of the water pipe (62), and the water inlet end of the water pipe (62) is connected to the water outlet end of the water main pipe (41); The regulating valve (63) is installed on the water pipe (62), and the regulating valve (63) is arranged close to the water inlet end of the water pipe (62).

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