CN2253289Y - Gaseous delivery damping device of offset press plate - Google Patents
Gaseous delivery damping device of offset press plate Download PDFInfo
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- CN2253289Y CN2253289Y CN 96206253 CN96206253U CN2253289Y CN 2253289 Y CN2253289 Y CN 2253289Y CN 96206253 CN96206253 CN 96206253 CN 96206253 U CN96206253 U CN 96206253U CN 2253289 Y CN2253289 Y CN 2253289Y
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Abstract
The utility model relates to a water delivery damping device of offset press printing plates, which is composed of an air compressor, an air humidifier, an air duct, an air uniform spray head, an automatic control electrical distribution box and a water box. The utility model can directly spray damp air stream on the printing plates or on the water and ink rollers of the existing offset presses, the temperature of the damp air stream is higher than environment temperature, and the relative humidity of the damp air stream is 40-95%. The utility model is a plate damping device for offset presses with fine water quantity control and needs not to increase the processing installation accuracy of common offset presses. The utility model can be used for light printing offset presses and can remarkable increase printing quality.
Description
The utility model belongs to the forme water delivery damping device of offset press, and the forme that can be used for various offset presses is wetting, and the forme that is specially adapted to light printing such as desk-top, Table top type and business card offset press offset press is wetting.
Offset press is that the principle of utilizing ink to repel each other is carried out work, do not go up at forme that the least possible water is provided under the dirty prerequisite is the key of offset printing, in fact the needed water yield of the space of a whole page is considerably less, as the printing of PS version, guarantees that the forme pondage that normal printing ink shifts approximately need maintain 1.25ml/m
2, being equivalent to the forme surface and having only the thick moisture film of 1.25 μ m, the existing wetting system of offset printing is so thin moisture film uniformly because of a variety of causes is difficult to obtain.There is the wetting system of roller to comprise that routine is wetting and Da Gelunshi is wetting, be water to be passed band by the machinery rotation from bucket by some damping rollers or water-ink roller, deliver to forme by copy roller, the surface tension of aqueous water make output the water of band that hour roller passes be the discontinuous globule and be difficult for forming thin and moisture film uniformly, damping roller attaches that the ink dust paper hair etc. and the depth of parallelism and fineness thereof are not high will directly to be influenced the wetting all even water yield and control in addition.High-precision processing is installed and meticulous maintenance can improve wetting effect, but the then corresponding raising of equipment manufacturing cost and printing cost.CN1068776A discloses the wetting system of no roller supersonic damping device, is to make water fogging with ultrasonic wave, saves damping roller and water smoke is sprayed directly on to forme is used for wetting.Water smoke is to be suspended in the aerosol that the small liquid globule is formed in the air, and the average diameter of mist pearl is 50 μ m, because capillary existence, the film of mist bead surface just as there being one to tighten, when arriving the space of a whole page, elastic collision takes place and splashing everywhere, is difficult for dropping on the space of a whole page; The mist pearl is dropped on forme picture and text part, still remains globule state, influences forme and normally goes up China ink, makes the tarnish of printing writing, occurs and the relevant white point of mist pearl size.The mist pearl is that the globule that falls within the space of a whole page is sprawled the process of connection in the process that the forme surface forms moisture film, if realize the moisture film of 1.25 μ m, the globule spacing that then falls within the space of a whole page is required to be 800 μ m, and globule land are a random process in the space of a whole page, under so low density, random fluctuation is very big, can be obtained by the random fluctuation theory, at 10 * 10mm
2Fluctuation in the scope is 8%, and at 1 * 1mm
2Fluctuation in the scope will reach 80%, causes wetting inhomogeneously, if improve uniformity, then will increase output.
The purpose of this utility model provides a kind of water is transported in the gaseous state mode and realizes the wetting device of forme on offset press forme or water, the ink roller, with the air-flow that is rich in aqueous vapor directly spray be distributed in forme or existing offset press water, ink roller, form thin and moisture film uniformly, it is wetting that the processing installation accuracy that need not to improve common offset machine just can reach the even wetting offset press forme of the little water yield.
It is wetting that the utility model is that the air-flow that will be rich in aqueous vapor is sprayed on offset press forme or existing offset press water, ink roller reaches water delivery, air velocity is 0.2～9m/s, temperature is 20～60 ℃, relative humidity is 40%～95%, and the aqueous vapor dividing potential drop is 900～18000Pa in the air-flow, and this air-flow flows through air humidifier by air compressor with air pressurized and produces, pass through wireway, deliver to even gas blowout head, spray is distributed in offset press forme or water, ink roller, realizes that the forme of uniform and thin is wetting.
The utility model mainly comprises several parts compositions of air compressor, air humidifier, water tank, wireway, even gas blowout head and automatic distribution control box.Air humidifier can adopt the structure similar to the conditioning Tower in the chemical industry equipment, can control the temperature and humidity of eluting gas, produces the utility model desired gas.Wireway is used to make the gas from air humidifier to import even gas blowout head, moisture maintenance gaseous state is noncondensing when making above-mentioned gas flow through wireway, has wall temperature control heating arrangements in the wireway, even gas blowout head is the uniform air flow of a uniform section certain flow rate with the gas expanded that wireway imports, the product of gas flow and nozzle exit is proportional to the forme area, be proportional to offset printer speed, for water contained in the gas that makes the even gas blowout head of flowing through keeps gaseous state noncondensing, has the temperature control heating arrangements on the even gas blowout head, it is wetting that the said air-flow of even gas blowout head ejection can carry out forme by dual mode, one, said air-flow is sprayed directly on to forme and realizes that no roller is wetting, and it two is sprayed on the water that has offset press now with said gas, ink roller realizes having roller wetting by the gaseous state water delivery.The distance of even gas blowout head and forme or water, ink roller should guarantee air-flow arrive before forme or water, the ink roller in the air-flow moisture for gaseous state noncondensing, said air-flow can form the continuous moisture film near molecular film thickness on forme or water, ink roller, realize very little evenly wetting of the water yield.
By the water temperature in the adjustments of gas humidifier, the adjustments of gas humidifier is discharged the relative humidity of gas, thereby changes the temperature and the water content of air-flow, regulates the flow of even gas blowout head ejection air-flow again, then can regulate the wetting water yield of forme.The thickness of the moisture film mode of molecular film continuously increases or reduces, thereby can meticulously the damping water yield be adjusted to optimum state.
Concrete operations step of the present utility model is described below:
1. produce Compressed Gas by air compressor, tolerance is adjustable;
2. Compressed Gas enters air humidifier, by regulating water temperature wherein, adjustments of gas
Humidity is water content, and the control temperature range is 20～60 ℃, the phase of the wet gas current that produces
To humidity is 40%～95%, and the aqueous vapor dividing potential drop is 900～18000Pa;
3. above-mentionedly flow through the wireway that temperature control and heating functions is arranged, enter even gas blowout by the humidification air-flow
Head, the temperature of regulating wireway and even gas blowout head is higher than the water temperature described in 2., makes
Gas supersaturation do not occur when flowing through wireway, even gas blowout and connects the phenomenon of condensing, and makes institute
Moisture maintenance gaseous state;
4. the air-flow that is sprayed by even gas blowout head is sprayed directly on to forme and realizes that no roller is wetting, with said gas
Water, ink roller realization that stream is sprayed on existing offset press have roller wetting by the gaseous state water delivery, spray
The distance of head and forme or water, ink roller should guarantee air-flow arrival forme or water, ink roller it
Preceding is gaseous state.Regulate wetting giving by water content and the air flow rate regulated in the air-flow
The water yield.
The temperature control of above-mentioned said water temperature, wireway, even gas blowout head is finished by the cover of three in automatic distribution control box ordinary temp control circuit, 10～70 ℃ of temperature control scopes, temperature-controlled precision≤± 0.5 ℃, the power that air flow rate is regulated air compressor by automatic distribution control box is realized, the synchronizing signal that automatic distribution control box acceptance is drawn from offset press is finished Synchronization Control.
The utility model is that water is carried in the gaseous state mode, be sprayed on the water, ink roller of the space of a whole page or existing offset press and form moisture film, water almost is that the mode with continuous molecular film increases or reduces, thereby uniform and delicate the water yield is controlled better, the no roller that can realize uniform and delicate is wetting, and that can realize the accurate control of the water yield again has roller wetting.
The utility model can save complicated damping roller machine driven system, reduces equipment manufacturing cost, and is also evenly wetting when output is very little, the emulsification of printing ink and the tendency that tarnishes have therefrom been reduced, thereby obtain the bright-coloured mass colour of light, paper distortion is little, has improved polychrome chromatography accuracy; Can make things convenient for and easily obtain ink-water balance, feedwater is stable, need not too much operating experience.
The forme of light printing offset presses such as that the utility model can be used for is desk-top, Table top type and business card offset press is wetting, need not to improve the processing installation accuracy that has type now and can significantly improve printing quality, use the PS version then can carry out the chromatography of polychrome site, on glossy paper such as art paper, print off high-quality colored picture and text.
Outstanding substantive distinguishing features and the progress of the utility model can be done furtherly in conjunction with the accompanying drawings
Bright:
Fig. 1 is a gaseous state water delivery damping device general structure schematic diagram.
Fig. 2 is an even gas blowout B-B profile.
Fig. 3 is an even gas blowout A-A profile.
Fig. 4 is an even gas blowout bottom view.
Fig. 5 is a throttling dividing plate schematic diagram.
Fig. 6 is the wetting even gas blowout scheme of installation of no roller.
Fig. 7 has the wetting even gas blowout scheme of installation of roller.
As shown in the figure, the utility model mainly comprises air compressor 1, air humidifier 4, wireway 7, even gas blowout 8 and distribution control box 15 automatically, and water tank 6 is formed.
Air compressor 1 is by automatic distribution control box 15 power supplies, it is communicated with the bubble generator 3 that is installed in air humidifier 4 bottoms, bubble generator 3 has ventilating porous structure, there is a heater 2 by automatic distribution control box 15 power supplies the bottom of air humidifier 4, air humidifier 4 middle parts have a filler to be connected with water tank 6 bottoms by the water pipe that is equipped with valve, be used to add water, water-immersed temperature sensor 5 is equipped with at air humidifier 4 middle parts on the lower side; The top of air humidifier 4 connects wireway 7, wireway 7 inwalls have temperature control heating heating wire and temperature sensor, wireway 7 other ends are connected with even gas blowout 8 air admission hole 16, even gas blowout 8 is just like Fig. 2, two cuboid grooves 17 shown in Figure 3 and 22, there is at least one evenly distributed circular hole 19 to be communicated with on the dividing plate between groove 17 and the groove 22, groove 17 has a top cover 18 by the screw fixing seal, evenly distributed screw 20 is arranged on the top cover 18, corresponding one by one and coaxial with circular hole 19,19 of screw 20 and circular holes have nose cone screw rod 21, screw 20, form air valve between nose cone screw rod 21 and the circular hole 19, groove 17 left end sidewalls have air admission hole 16 to be communicated with wireway 7.There is as shown in Figure 4 a bottom 25 groove 22 lower ends, there be the puff prot 26 of a length greater than forme length in bottom central authorities, even moral stream dividing plate 23 is installed between bottom 25 and the groove 22, be separated by by rectangle frame 24 between a plurality of even moral stream dividing plates and produce even headroom, even moral stream dividing plate adopts single seam dividing plate 28 shown in Figure 5, stitches one of dividing plate 29, porous barrier 30, net formula dividing plate 31 or its a plurality of combinations, having heaters 27 and temperature sensor on the even gas blowout 8 front and back outer wall more.Even gas blowout 8 and forme 32 or water, ink roller 33 relative (as Fig. 6, shown in Figure 7), the distance of even gas blowout 8 and forme or water, ink roller should guarantee air-flow arrival forme or damping roller before the water in the air-flow be gaseous state.
Automatically distribution control box 15 panels are provided with temperature adjustment knob 12, the tolerance adjusting knob 13 of temperature dial gauge 9 and 11, gas flow meter 14, Water Temperature-Adjusting rotary knob 10, even gas blowout 8 and wireway 7, and the synchronous signal line that is connected with offset press is arranged.
Wide 0.5～the 20mm that can be of seam of even moral stream dividing plate 28, the position is in dividing plate central authorities, and even moral flows the wide 0.5～3mm that can be of seam of dividing plate 29, the relative dividing plate in position central authorities symmetry, the diameter of the circular hole of even moral stream dividing plate 30 can be 0.5～1.0mm, and even moral stream dividing plate 31 can be 200～400 purpose nets.
The utility model is by air compressor 1 air pressurized to be delivered to bubble generator 3 in the air humidifier 4, air communication is crossed bubble generator 3 backs and produce minute bubbles in water, increase the contact area of gas and water, the water capacity is changed places diffuse in the bubble, gas becomes the higher gas of water content behind the water surface of emerging, relative humidity can be between 40%～95%.Water temperature in the air humidifier 4 is by the control of the water temperature regulater in automatic distribution control box water temperature.
The air that is rich in aqueous vapor by air humidifier 4 generations, deliver to even gas blowout 8 by wireway 7, by regulating the air valve that constitutes by screw 20, nose cone screw rod 21 and circular hole 19, make the tolerance uniform balance of each air valve ejection, again by the even mechanism of the air-flow that constitutes by throttling dividing plate 23 with the further homogenising of gas, by puff prot 26 ejection, the air velocity of ejection can be regulated between 0.2～9m/s, puff prot 26 cross-sectional widths can be 1～30mm, the many 30～150mm of the comparable forme width of length.The gas of ejection directly is sprayed onto on the forme 32, forms the moisture film of uniform and delicate, and realization is wetting to the space of a whole page; The gas of ejection directly is sprayed onto on the water, ink roller 33 of existing offset press, and what realization can carry out meticulously that the water yield regulates has roller wetting.Be higher than water temperature in the air humidifier 4 because wireway 7 and even gas blowout 8 has heating function respectively and control its temperature, water is present in the air stream with gaseous state always, avoid the wall ponding and the phenomenon of condensing to take place.
Automatically distribution control box 15 has the common temperature-adjusting circuit of three covers, control the temperature of the temperature of water temperature in the air humidifier 4, wireway 7 and even gas blowout 8 respectively, switch and power that compressor 1 power supply circuits control compressor 1 is arranged, flow by controlling even gas blowout 8 an ejection air-flow and the water content in the air-flow are regulated the water yield on the forme; By synchronizing signal from offset press, distinguish running/shutdown, stopped status stops to gas; Automatically temperature-controlled precision≤± 0.5 of each temperature-adjusting circuit of control distribution system ℃, 10～70 ℃ of temperature control scopes.
Regulate the water saturation vapour pressure by the water temperature in the adjustments of gas humidifier 4, discharge the relative humidity of gas by water surface elevation adjustments of gas humidifier in the adjustments of gas humidifier 44, thereby change the temperature and the water content of ejection air-flow, regulate the flow velocity of even gas blowout 8 an ejection air-flow and change flow, regulate the wetting water yield of forme.
The utility model adopts the air-flow that is rich in aqueous vapor of environment temperature when being higher than work to carry out wetting, desk-top, the Table top type of the light printing usefulness of living for the printing short run and card offset press almost do not observe the rising of forme temperature, and the more senior offset press that the long version of printing is lived generally all has the bed cooling device.
Working procedure of the present utility model is:
Connect the power supply of automatic distribution control box 15, regulate water temperature adjusting knob 10, tolerance adjusting knob 13, the temperature control knob 12 of even gas blowout 8 and wireway 7 is suitable value, rule is water temperature environment temperature and low as much as possible when being higher than work, water temperature in a little higher than air humidifier 4 of temperature of even gas blowout 8 and wireway 7, making the aqueous vapor in flow through even gas blowout 8 and wireway 7 air-flows can supersaturation and condense and get final product, water surface elevation gets final product to produce 40%～95% gas relative humidity in the gas humidification device 4, can remain certain value during work, air velocity is decided the preheated one-section time according to plate size and seal speed.According to the synchronizing signal from offset press, differentiation running/shutdown, stopped status stop to gas, guarantee the package unit co-ordination by automatic control distribution system.Begin to print the back and regulate water temperature and gas flow rate according to the gloss on forme surface and print quality and regulate water yield size on the forme, do not go up under the dirty prerequisite at forme, make the water yield as far as possible little.
The utility model was done experiment on homemade 1170 business card offset presses, when directly being sprayed onto the gas that sprays on the PS version forme, use the white light forme, regulating pondage is during to appropriate value, can be observed the interference on the space of a whole page, the moisture film that the forme surface is described mostly is several visible wavelengths most, it is uniform can judging forme surface moisture film by the distribution of color of interference light, print off clear glossy picture and text on the light art paper having under this condition, and former Da Gelunshi damping device has never been realized, carry out on the business card offset press damping roller when wetting when the gas of ejection directly is sprayed onto, print quality is also obviously improved.
Claims (4)
1. offset press forme gaseous state water delivery damping device is characterized in that it mainly comprises air compressor 1, air humidifier 4, wireway 7, even gas blowout 8, distribution control box 15, water tank 6 are formed automatically.Air compressor 1 is by automatic distribution control box 15 power supplies, it is communicated with the bubble generator 3 that is installed in air humidifier 4 bottoms, bubble generator 3 has ventilating porous structure, there is a heater 2 by automatic distribution control box 15 power supplies the bottom of air humidifier 4, air humidifier 4 middle parts have a filler to be connected with water tank 6 bottoms by the water pipe that is equipped with valve, be used to add water, water-immersed temperature sensor 5 is equipped with at air humidifier 4 middle parts on the lower side; The top of air humidifier 4 connects wireway 7, wireway 7 inwalls have temperature control heating heating wire and temperature sensor, wireway 7 other ends are connected with even gas blowout 8 air admission hole 16, even gas blowout 8 has two cuboid grooves 17 and 22, there is at least one evenly distributed circular hole 19 to be communicated with on the dividing plate between groove 17 and the groove 22, groove 17 has a top cover 18 by the screw fixing seal, evenly distributed screw 20 is arranged on the top cover 18, corresponding one by one and coaxial with circular hole 19,19 of screw 20 and circular holes have nose cone screw rod 21, screw 20, form air valve between nose cone screw rod 21 and the circular hole 19, groove 17 left end sidewalls have air admission hole 16 to be communicated with wireway 7.There is a bottom 25 groove 22 lower ends, there be the puff prot 26 of a length greater than forme length in bottom central authorities, even moral stream dividing plate 23 is installed between bottom 25 and the groove 22, be separated by by rectangle frame 24 between a plurality of even moral stream dividing plates and produce even headroom, having heaters 27 and temperature sensor on the even gas blowout 8 front and back outer wall.Even gas blowout 8 and forme 32 or water, ink roller 33 are relative, and the distance of even gas blowout 8 and forme or water, ink roller should guarantee to arrive forme or damping roller by air-flow, and the water in the air-flow can supersaturation and condense before, remains gaseous state.
Automatically distribution control box 15 panels are provided with temperature adjustment knob 12, the tolerance adjusting knob 13 of temperature dial gauge 9 and 11, gas flow meter 14, Water Temperature-Adjusting rotary knob 10, even gas blowout 8 and wireway 7, and the synchronous signal line that is connected with offset press is arranged.
2. according to the said offset press forme of claim 1 gaseous state water delivery damping device, it is characterized in that said air humidifier 4 can be designed to the cylinder unit that internal diameter is 200mm, high 500mm, water surface elevation 250mm; Said bubble generator 3 is the hollow garden of a 150mm dish for high 30mm, diameter, and the evenly distributed diameter of upper surface is the hole of 0.4～1.0mm.
3. according to the said offset press forme of claim 1 gaseous state water delivery damping device, it is characterized in that said even moral stream dividing plate adopts single seam dividing plate 28, stitches one of dividing plate 29, porous barrier 30, net formula dividing plate 31 or its a plurality of combinations more.
4. according to the said gaseous state water delivery of claim 3 damping device, wide 0.5～the 20mm of being of seam that it is characterized in that said even moral stream dividing plate 27, the position is in dividing plate central authorities, the seam of even moral stream dividing plate 28 is wide to be 0.5～3mm, position relative dividing plate central authorities symmetry, the diameter of the circular hole of even moral stream dividing plate 29 is 0.5～1.0mm, and even moral stream dividing plate 30 is 200～400 purpose nets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96206253 CN2253289Y (en) | 1996-03-15 | 1996-03-15 | Gaseous delivery damping device of offset press plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96206253 CN2253289Y (en) | 1996-03-15 | 1996-03-15 | Gaseous delivery damping device of offset press plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2253289Y true CN2253289Y (en) | 1997-04-30 |
Family
ID=33890947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96206253 Expired - Fee Related CN2253289Y (en) | 1996-03-15 | 1996-03-15 | Gaseous delivery damping device of offset press plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2253289Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037033B (en) * | 2006-03-17 | 2011-06-08 | 江苏昌昇集团股份有限公司 | Bisectional four-color offset press |
| CN109624483A (en) * | 2019-01-30 | 2019-04-16 | 昆明理工大学 | A kind of damping water applying method and its system and application based on ultrasonic atomizatio |
| CN114801428A (en) * | 2022-05-11 | 2022-07-29 | 上海瑞源印刷设备有限公司 | Alcohol dampening device for continuous transmission of metal plate offset printing machine |
-
1996
- 1996-03-15 CN CN 96206253 patent/CN2253289Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037033B (en) * | 2006-03-17 | 2011-06-08 | 江苏昌昇集团股份有限公司 | Bisectional four-color offset press |
| CN109624483A (en) * | 2019-01-30 | 2019-04-16 | 昆明理工大学 | A kind of damping water applying method and its system and application based on ultrasonic atomizatio |
| CN109624483B (en) * | 2019-01-30 | 2020-04-10 | 昆明理工大学 | Dampening water application method based on ultrasonic atomization and system and application thereof |
| CN114801428A (en) * | 2022-05-11 | 2022-07-29 | 上海瑞源印刷设备有限公司 | Alcohol dampening device for continuous transmission of metal plate offset printing machine |
| CN114801428B (en) * | 2022-05-11 | 2023-09-05 | 上海瑞源印刷设备有限公司 | Continuous transmission alcohol dampening device for metal plate offset press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |