CN201410777Y

CN201410777Y - Printing water supplying device of offset printer

Info

Publication number: CN201410777Y
Application number: CN2009201555810U
Authority: CN
Inventors: 何学邦; 王培玉; 肖勇; 黄江伟; 陈兰; 杨合和
Original assignee: GUANGXI ZHENLONG COLOUR PRINTING AND PACKAGING CO Ltd
Current assignee: GUANGXI ZHENLONG COLOUR PRINTING AND PACKAGING CO Ltd
Priority date: 2009-05-22
Filing date: 2009-05-22
Publication date: 2010-02-24
Anticipated expiration: 2019-05-22

Abstract

A printing water supplying device of an offset printer comprises a first water supply loop, and is characterized in that the printing water supplying device further comprises a second water supply loop, wherein the second water supply loop comprises a second refrigerating water tank, a second recovery water tank and at least one second water channel, the second refrigerating water tank is communicated with the second water channel through a second water conveying pipe, the second water channel is communicated with the second recovery water tank through a second overflow pipe, and the second recovery water tank is communicated with the second refrigerating water tank through a second return conduit. In the utility model, the second water supply loop and the first water supply loop are mutually independent from each other. In printing process, when the quality of the printing water in the second water supply loop does not conform to the printing requirement of white color group any more,only the second water supply loop needs to be washed and the printing water in the second water supply loop needs to be replaced, while the first water supply loop is not influenced; and a refrigerating water tank with smaller volume is used as the second refrigerating water tank, the operation time is short when the printing water is replaced every time and the required printing water is less.

Description

The printing water feeder of offset press

Technical field

The utility model relates to printing machinery, specifically, relates to a kind of printing water feeder of offset press.

Background technology

Can offset press print out high-quality product, and key is to reach " ink-water balance " in printing process, and the quality of printing water has great influence to the quality of print product.The printing water is that its temperature is generally at 10-15 ℃ by formulated by a certain percentage solution such as water, alcohol, fountain solutions.

The printing of existing offset press comprises a water supply loop with water feeder, and water supply loop comprises a refrigeration water tank, a return water tank and a plurality of tank, and the quantity of tank is identical and corresponding one by one with the quantity of offset press colour cell.Refrigeration water tank will be printed the water refrigeration cool-down, and will print water by water-supply-pipe and be transported to each tank; The water measurement roller is installed in the tank, a water measurement roller part is immersed in the printing water, another part is on the liquid level of printing water, the part that the water measurement roller is on the liquid level contact with passing damping roller, by passing damping roller, will printing on the forme that water is transported to corresponding colour cell by edition damping roller; After the printing water arrives forme, forme is carried out damping, when carrying out damping, by the printing water on the version damping roller printing ink of forme surface small portion of residual is taken away, and oppositely carried return flume along above-mentioned biography damping roller, water measurement roller; In addition, tank is provided with spout hole, spout hole is communicated with return water tank by overflow pipe, the delivery port of return water tank is communicated with refrigeration water tank by return duct, is typically provided with water pump on the return duct, during the offset press operation, refrigeration water tank will be printed water and is transported to each tank and make the liquid level in the tank be higher than spout hole, like this, the part printing water in the tank flows to return water tank through spout hole, overflow pipe, and the printing water in the return water tank is back to refrigeration water tank through return duct; Water filters refrigeration water tank, refrigeration cool-down to printing, and makes the printing water be fit to printing machine and uses, and will print water again and flow to each tank; So circulation.

Because when colour cell is carried out damping; by the printing water on the version damping roller printing ink of forme surface small portion of residual is taken away; and oppositely carry return flume; so printing water in the tank; overflow and flow to the printing water of return water tank from tank; the printing water that is back to refrigeration water tank from return water tank all contains printing ink; like this; in printing process; passing along with printing time; it is more and more to print printing ink contained in the water in the water supply loop; the printing water becomes muddy and forms precipitation; so that the quality of printing water no longer meets print request, must shut down this moment and clean water supply loop and change the printing water.The printing of above-mentioned existing offset press is with in the water feeder, the shared refrigeration water tank of all colour cells and a return water tank, on the one hand, because most of print product all needs to print white ink, and the used white ink of white colour cell contains more titanium dioxide, ink particle is big, makes the printing water become muddy very soon, thereby needs the frequent clean water supply loop and change the printing water; On the other hand, because refrigeration water tank provides the printing water for all colour cells, its capacity must be enough big, thereby replacing printing water all needs to print water in a large number at every turn, and cost is higher; Again on the one hand, the each replacing when printing water needs to clean whole water supply loop (comprising refrigeration water tank, return water tank and all tanks), and it is longer to expend time in.In sum, the printing of existing offset press uses water feeder in printing process, must the whole water supply loop of frequent clean and change printing water in refrigeration water tank, return water tank and all tanks, therefore plenty of time and printing water have been expended, reduce production efficiency, increased printing cost.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of printing water feeder of offset press, and the printing of this offset press can be saved the printing water with water feeder, shortens the operating time of changing the printing water.The technical scheme that adopts is as follows:

A kind of printing water feeder of offset press, comprise first water supply loop, first water supply loop comprises first refrigeration water tank, first return water tank and at least one first tank, first refrigeration water tank is communicated with first tank by first water-supply-pipe, first tank is communicated with first return water tank by first overflow pipe, first return water tank is communicated with first refrigeration water tank by first return duct, it is characterized in that: described printing also comprises second water supply loop with water feeder, second water supply loop comprises second refrigeration water tank, second return water tank and at least one second tank, second refrigeration water tank is communicated with second tank by second water-supply-pipe, second tank is communicated with second return water tank by second overflow pipe, and second return water tank is communicated with second refrigeration water tank by second return duct.

Above-mentioned second tank is that the white colour cell of offset press supplies water.Usually, offset press has a white colour cell, therefore is typically provided with one second tank in second water supply loop.When offset press has a plurality of white colour cell, correspondingly be provided with a plurality of second tanks in second water supply loop, second tank is identical with white colour cell quantity and corresponding one by one.

Above-mentioned first tank is that other colour cell of offset press (being black colour cell and colored colour cell) supplies water, and the quantity of first tank is identical and corresponding one by one with the total quantity of offset press black colour cell and colored colour cell.

The utility model is provided with first water supply loop and second water supply loop, wherein second water supply loop aims at the white colour cell water supply of offset press, first water supply loop then is that other colour cell of offset press supplies water, these two water supply loops are separate, printing water in two water supply loops does not mix mutually, cleans and changes the operation of printing water and carry out respectively.In printing process, when the quality of the printing water in second water supply loop no longer meets the print request of white colour cell, only need to clean second water supply loop and change printing water in second water supply loop, first water supply loop is then unaffected; Because second water supply loop aims at the white colour cell of offset press and supplies water, therefore second refrigeration water tank can adopt the less refrigeration water tank of capacity, and when changing the printing water, the operating time is short, and required printing water is less at every turn; Printing water in first water supply loop can keep good quality for a long time owing to be not subjected to the pollution of white ink, needn't frequently change.

Description of drawings

Accompanying drawing is the structural representation of the utility model preferred embodiment.

The specific embodiment

As shown in drawings, the printing of this offset press comprises first water supply loop and second water supply loop with water feeder.

Second water supply loop comprises second refrigeration water tank 1, second return water tank 2 and one second tank 3, second refrigeration water tank 1 is communicated with second tank 3 by second water-supply-pipe 4, second tank 3 is communicated with second return water tank 2 by second overflow pipe 5, and second return water tank 2 is communicated with second refrigeration water tank 1 by second return duct 6.Second tank 3 is that the white colour cell of offset press supplies water.In the present embodiment, the position that the position of second refrigeration water tank 1 is higher than second tank, 3, the second return water tanks 2 is lower than second tank 3, relies on the gravity effect, make the printing water flow to second tank 3, flow to second return water tank 2 from second tank 3 again from second refrigeration water tank 1; Second return duct 6 is provided with second water pump, 7, the second water pumps 7 the mobile power that provides of the printing water of second return water tank, 2 to second refrigeration water tank 1 is provided.

First water supply loop comprises first refrigeration water tank 8, first return water tank 9 and five first tanks 10, first refrigeration water tank 8 is communicated with first tank 10 by first water-supply-pipe 11, first tank 10 is communicated with first return water tank 9 by first overflow pipe 12, and first return water tank 9 is communicated with first refrigeration water tank 8 by first return duct 13.First tank 10 supplies water for other colour cell of offset press (being black colour cell, colored colour cell), and the quantity of first tank 10 is identical and corresponding one by one with the total quantity of offset press black colour cell and colored colour cell.In the present embodiment, the position that the position of first refrigeration water tank 8 is higher than first tank, 10, the first return water tanks 9 is lower than first tank 10, relies on the gravity effect, make the printing water flow to first tank 10, flow to first return water tank 9 from first tank 10 again from first refrigeration water tank 8; First return duct 13 is provided with first water pump, 14, the first water pumps 14 the mobile power that provides of the printing water of first return water tank, 9 to first refrigeration water tank 8 is provided.

Brief description this printing once operation principle of water feeder:

First water supply loop and second water supply loop are worked independently of each other;

The course of work of second water supply loop is: second refrigeration water tank 1 will be printed the water refrigeration cool-down, and will print water by second water-supply-pipe 4 and be transported to second tank 3; In second tank 3 water measurement roller 15 is installed, water measurement roller 15 parts are immersed in the printing water, another part is on the liquid level of printing water, the part that water measurement roller 15 is on the liquid level contact with passing damping roller, by passing damping roller, will printing on the forme that water is transported to white colour cell by edition damping roller; After the printing water arrives the forme of white colour cell, forme to white colour cell carries out damping, when carrying out damping, by the printing water on the version damping roller printing ink of the forme surface small portion of residual of white colour cell is taken away, and oppositely carried back second tank 3 along above-mentioned biography damping roller, water measurement roller; In addition, when second refrigeration water tank 1 will be printed water and will be transported to second tank 3, part printing water in second tank 3 is back to second refrigeration water tank 1 through the printing water that second overflow pipe 5 flows in second return water tank, 2, the second return water tanks 2 through second return duct 6; 1 pair of printing of second refrigeration water tank water filters, refrigeration cool-down, makes the printing water be fit to printing machine and uses, and will print water again and flow to second tank 3; So circulation.

Five first tanks 10 in first water supply loop are respectively other five colour cells of offset press and supply water, and its course of work can be with reference to the course of work of above-mentioned second water supply loop.

Claims

1, a kind of printing water feeder of offset press, comprise first water supply loop, first water supply loop comprises first refrigeration water tank, first return water tank and at least one first tank, first refrigeration water tank is communicated with first tank by first water-supply-pipe, first tank is communicated with first return water tank by first overflow pipe, first return water tank is communicated with first refrigeration water tank by first return duct, it is characterized in that: described printing also comprises second water supply loop with water feeder, second water supply loop comprises second refrigeration water tank, second return water tank and at least one second tank, second refrigeration water tank is communicated with second tank by second water-supply-pipe, second tank is communicated with second return water tank by second overflow pipe, and second return water tank is communicated with second refrigeration water tank by second return duct.

2, the printing water feeder of offset press according to claim 1 is characterized in that: be provided with one second tank in described second water supply loop.