CN109760407A - The control method and its letterpress system of intelligent letterpress force of impression - Google Patents
The control method and its letterpress system of intelligent letterpress force of impression Download PDFInfo
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- CN109760407A CN109760407A CN201910177550.3A CN201910177550A CN109760407A CN 109760407 A CN109760407 A CN 109760407A CN 201910177550 A CN201910177550 A CN 201910177550A CN 109760407 A CN109760407 A CN 109760407A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000007639 printing Methods 0.000 claims abstract description 73
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 16
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- 238000004587 chromatography analysis Methods 0.000 claims description 3
- 238000004049 embossing Methods 0.000 abstract description 4
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Abstract
A kind of control method and its letterpress system of intelligence letterpress force of impression, wherein, system includes the roller platen for being used for transmission stock, and the multiple independent printing seats contacted with the roller platen, first executing agency, control system and the vision system being electrically connected with the control system, first executing agency includes the screw rod for being located at printing seats two sides, one end of every screw rod is connect with rack, the every screw rod other end sets first controlled motor, and all first controlled motors and the control system are electrically connected.The present invention has the advantages that the force of impression of adjustment unit for embossing that can be fast and accurate.
Description
Technical field
The present invention relates to the control methods and its letterpress system of a kind of intelligent letterpress force of impression.
Background technique
Letterpress (Relief Printing) is one of traditional four big mode of printings.In letterpress, printing machine
First make ink evenly distributed to black device, then by ink roller by printing ink transfer to printing plate, due to the areas on relief printing plate
Much higher than the non-graphic part on printing plate, therefore, the ink on ink roller can only be transferred to printing elements, and non-graphic portion
Divide then without ink.Paper is transported to the printing unit of printing machine by the paper feeding mechanism of printing machine, in printing plate device and imprinting apparatus
Collective effect under, the ink of printing plate areas is then transferred on stock, thus complete a printed matter printing.Relief printing plate
One kind as printing technology is printed, it is thick and solid with its printed matter layer of ink, it is bright-colored, saturation degree is high, printing pressrun is high, prints
The advantages that quality is good, print speed printing speed is fast occupies in printing packaging and picture and text publishing area and its consequence.
The quality of letterpress quality, one of them critically important index are exactly the saturation degree of printed matter, printing process
In, if put, ink amount is excessive, and the product ink amount printed out is thick, does not meet requirement of the client to product, and will increase printing
The ink cost of enterprise, if put, ink amount is very few, and the product ink amount printed out is thin, does not also meet client equally and wants to product
It asks.
In the prior art, all using manually adjusting, this adjustment needs experience very rich for the adjustment of force of impression
The printer talent is adjustable good, and manual intervention is excessive, so that the consistency of printed matter is poor, and the loss of stock is big.How
The force of impression of fast and accurate adjustment unit for embossing is industry urgent problem to be solved.
The applicant concentrates on studies decades in printing industry, has invented a kind of combination modern times digital imaging techniques, can be real
The technology of now automation adjustment unit for embossing force of impression.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of force of impression of fast and accurate adjustment unit for embossing to society,
The reduction manual intervention that can lack to the greatest extent improves the control method and its relief printing plate print of the intelligent letterpress force of impression of printed matter consistency
Brush system.
The technical scheme is that providing a kind of control method of intelligent letterpress force of impression, include the following steps,
S1, the standard saturation degree of printed matter and standard halftone dot image are passed through into vision system input control system, and stored；
S2, vision system at predetermined intervals the time acquisition printed on line printed matter real-time saturation degree and real-time halftone dot image,
And input control system；
S3, control system compare real-time saturation degree and real-time halftone dot image with standard saturation degree and standard halftone dot image respectively
Compared with；
S4, according to comparison result, control system controls the first executing agency and is adjusted to the coining power of printing seats；
S5, S2-S4 step is repeated, until printing stops.
As improvement of the present invention, the method for the real-time halftone dot image of the printed matter of the acquisition printed on line are as follows: right
The picture and text edge of printed matter is taken pictures, and image is transported to control system.
As improvement of the present invention, first executing agency includes the screw rod for being located at printing seats two sides, every screw rod
One end connect with rack, the every screw rod other end sets first controlled motor, all first controlled motors and the control
System processed is electrically connected.
As improvement of the present invention, the method for the real-time saturation degree of the printed matter of the acquisition printed on line are as follows: for
For the printed matter of polychrome chromatography, when starting to print a kind of color every time, and predetermined interval later, to adjacent
At separating white space between two printed matters, line, vision system are measured perpendicular to the saturation degree of the direction of travel of the printed matter
The saturation degree of acquisition measurement line is as real-time saturation degree.
As improvement of the present invention, the method for the real-time saturation degree of the printed matter of the acquisition printed on line are as follows: for
For monochromatic printed matter, when starting printing, and predetermined interval later, between two neighboring printed matter
At separating white space, line, the saturation of vision system acquisition measurement line are measured perpendicular to the saturation degree of the direction of travel of the printed matter
Degree is used as real-time saturation degree；Or vision system in predetermined interval directly to the row perpendicular to the printed matter of printed matter
The saturation degree acquired into any section in direction is as real-time saturation degree.
As improvement of the present invention, the measurement line is continuous lines or interruption lines.
It, can be in bottom in data acquisition for printing bulk black matrix or bulk spot color bottom as improvement of the present invention
Equipped with light source, penetrating light intensity is acquired, as the foundation for judging glossy black saturation degree.
As improvement of the present invention, first controlled motor is servo motor or stepper motor.
The present invention also provides a kind of letterpress systems, the roller platen including being used for transmission stock, and with the pressure
Print multiple independent printing seats of roller contact, the first executing agency, control system and the view being electrically connected with the control system
Feel system, first executing agency include the screw rod for being located at printing seats two sides, and one end of every screw rod is connect with rack 62, often
The root screw rod other end respectively sets first controlled motor, and all first controlled motors and the control system 4 are electrically connected.
As improvement of the present invention, the printing seats include at least the relief printing plate that printing is contacted and realized with the roller platen
Roller and the drop roller for the relief printing plate roller ink supply is contacted and is used for the relief printing plate roller, the side of the drop roller is provided with
Print cartridge, the bottom of the drop roller immerse in the ink in print cartridge, and the side of the drop roller is provided with to be contacted with drop roller
Scraper, the scraper are located at the drop roller from the position taken when producing after ink in the print cartridge.
It further include the second executing agency as improvement of the present invention, second executing agency includes adjustment seat and sets
Several adjusting screw rods in adjustment seat, the adjustment seat are parallel to the scraper and are arranged, and the one of each adjusting screw rod
End is resisted against on the scraper, and the other end of each adjusting screw rod is respectively provided with second controlled motor, and all second
Controlled motor and the control system are electrically connected.
As improvement of the present invention, second controlled motor is servo motor or stepper motor.
As improvement of the present invention, the vision system at predetermined intervals the time acquisition printed on line printed matter reality
When saturation degree and real-time halftone dot image, and input control system；Control system distinguishes real-time saturation degree and real-time halftone dot image
It is compared with standard saturation degree and standard halftone dot image；According to comparison result, control system controls the first executing agency to print
The coining power of brush holder is adjusted or does not adjust.
Real-time saturation degree and real-time halftone dot image of the present invention according to the printed matter of vision system acquisition, and be entered into
In control system, control system by real-time saturation degree and real-time halftone dot image respectively with pre-stored standard saturation degree and standard
Halftone dot image is compared, and obtains comparison result, to pass through the pressure of the first actuating mechanism controls printing seats according to comparison result
Power is printed, replaces manual adjustment with this Automatic adjustment method, not only accurately, but also rapidly, the loss of stock can also be reduced
Amount.
Detailed description of the invention
Fig. 1 is the frame structure schematic diagram of control method of the present invention.
Fig. 2 is the schematic diagram of the saturation degree measurement line in the present invention.
Fig. 3 is a kind of structural schematic diagram (satellite-type idler wheel polychrome printing system) of embodiment of present system.
Fig. 4 is the structural schematic diagram at another visual angle of embodiment illustrated in fig. 3.
Fig. 5 is the enlarged structure schematic diagram of the printing seats in Fig. 4.
Fig. 6 is executing agency A in Fig. 5 to structural schematic diagram.
Fig. 7 is the enlarged structure schematic diagram of second of embodiment of printing seats of the invention.
Specific embodiment
Referring to Figure 1 to Fig. 2, what Fig. 1 to Fig. 2 was disclosed is a kind of control method of intelligent letterpress force of impression, including
Following steps,
S1, the standard saturation degree of printed matter and standard halftone dot image are passed through into vision system input control system, and stored；This hair
The standard halftone dot image printed matter with standard saturation degree sum in bright can be the standard printed matter provided by client, can also
After trying print in a small amount by printing person, the printed matter that confirmed by client is obtained；The standard halftone dot image of standard saturation degree sum is regarded
Feel system acquisition is spare into control system；
S2, vision system at predetermined intervals the time acquisition printed on line printed matter real-time saturation degree and real-time halftone dot image,
And input control system；When starting printing, or after printing starts, every predetermined interval, vision system acquisition once exists
The real-time saturation degree of the printed matter of line printing and real-time halftone dot image, and it is conveyed to control system；
S3, control system compare real-time saturation degree and real-time halftone dot image with standard saturation degree and standard halftone dot image respectively
Compared with；Under normal circumstances, control system first compares standard halftone dot image and real-time halftone dot image, then, then it is full to standard
It is compared with degree and real-time saturation degree, certainly, the sequence compared anti-can also cross progress；
S4, according to comparison result, control system controls the first executing agency and is adjusted or does not adjust to the coining power of printing seats；
Under normal conditions, if seriously (edge-diffusion of real-time halftone dot image seriously refers to be marked the edge-diffusion of halftone dot image in real time
There are serious flashes at the edge of quasi- halftone dot image), then illustrate that force of impression is excessive, force of impression need to be reduced, if real-time half-tone
The edge of picture is normal, but saturation degree is inadequate in real time, then illustrates that force of impression is too small, need to increase force of impression；
S5, S2-S4 step is repeated, until printing stops.
Preferably, the method for the real-time halftone dot image of the printed matter of the acquisition printed on line are as follows: to the picture and text of printed matter
Edge is taken pictures, and image is transported to control system, the edge-diffusion shape for the real-time halftone dot image of control system analysis
State.
Preferably, first executing agency 6 includes the screw rod 61 for being located at 2 two sides of printing seats, one end of every screw rod 61
Connect with rack 62, every 61 other end of screw rod sets first controlled motor 63, all first controlled motors 63 with it is described
Control system 4 is electrically connected.First controlled motor 63 can be servo motor or stepper motor (referring to Fig. 3).
Preferably, the method for the real-time saturation degree of the printed matter of the acquisition printed on line are as follows: for the print of polychrome chromatography
For brush product 20, when starting to print a kind of color every time, and predetermined interval later, in two neighboring printed matter
At separating white space between 20, line 30 is measured perpendicular to the saturation degree of the direction of travel F of the printed matter, vision system 5 acquires
The saturation degree of line is measured as real-time saturation degree (referring to fig. 2).
Preferably, the method for the real-time saturation degree of the printed matter of the acquisition printed on line are as follows: for monochromatic printed matter
For, when starting printing, and predetermined interval later, to the separating white space between two neighboring printed matter 20
Place measures line 30, the saturation degree of the acquisition measurement line of vision system 5 perpendicular to the saturation degree of the direction of travel F of the printed matter 20
As real-time saturation degree；Or vision system 5 in predetermined interval directly to printed matter 20 perpendicular to the printed matter
The saturation degree that any section 40 of direction of travel F acquires is as real-time saturation degree (referring to fig. 2).
Preferably, for printing bulk black matrix or bulk spot color bottom, in data acquisition, it can be equipped with light source in bottom, it is right
Penetrating light intensity acquires, as the foundation for judging glossy black saturation degree.
Preferably, the measurement line is continuous lines or interruption lines.The measurement line can be each color printing one
The face kind that item, in this way measurement line account for is relatively large；Can also on an intermittent measurement line, with the chain-dotted line of different colours come
The measurement line for indicating different colours can save area shared by measurement line in this way.
In addition, the width and size of the measurement line between different colours must be unified.
Fig. 3-Fig. 6 is referred to, what Fig. 3-Fig. 6 was disclosed is a kind of letterpress system, including being used for transmission stock 11
Roller platen 1, and the multiple independent printing seats 2 contacted with the roller platen 1, the first executing agency 6, control system 4 and with
The vision system 5 that the control system 4 is electrically connected, first executing agency 6 include the screw rod for being located at 2 two sides of printing seats
61, one end of every screw rod 61 is connect with rack 62, and every 61 other end of screw rod sets first controlled motor 63, Suo You
One controlled motor 63 is electrically connected with the control system 4.
Preferably, the printing seats 2 include at least contacted with the roller platen 1 and realize printing relief printing plate roller 21 and
It is contacted with the relief printing plate roller 21 and for the drop roller 22 for 21 ink supply of relief printing plate roller, the side setting of the drop roller 22
Have a print cartridge 23, the bottom of the drop roller 22 is immersed in the ink in print cartridge 23, the side of the drop roller 22 be provided with
Drop roller 22 contact scraper 24, the scraper 24 be located at the drop roller 22 from taken in the print cartridge 23 produced after ink when
Position.
Preferably, the invention also includes the second executing agency 3, second executing agency 3 includes adjustment seat 31 and is located at
Several adjusting screw rods 32 in adjustment seat 31, the adjustment seat 31 are parallel to the scraper 24 and are arranged, each adjusting spiral shell
One end of bar 32 is resisted against on the scraper 24, and the other end of each adjusting screw rod 32 is respectively provided with second controlled motor
33, the second all controlled motors 33 is electrically connected with the control system 4.Second controlled motor 33 can be servo electricity
Machine or stepper motor.The printed matter of the vision system 5 time (e.g., every 60 seconds) acquisition printed on line at predetermined intervals
Real-time saturation degree, and input control system 4；Real-time saturation degree is compared by control system 4 with standard saturation degree；According to comparison
Black measure of putting of printing seats 2 is adjusted or is not adjusted as a result, control system 4 controls the executing agency 3.Specifically, working as
The saturation degree of the discovery of control system 4 somewhere is undesirable, then adjusts corresponding adjusting screw rod 32 by controlled motor 33,
If saturation degree overrich turns pressure of the adjusting screw rod 32 to scraper a bit down, otherwise, just tune up a bit, if appropriate, then
It does not adjust.
Preferably, the vision system 5 at predetermined intervals the time acquisition printed on line printed matter real-time saturation degree and
Real-time halftone dot image, and input control system；Real-time saturation degree and real-time halftone dot image are saturated with standard by control system 4 respectively
Degree and standard halftone dot image are compared；According to comparison result, control system 4 controls the first executing agency 6 to the print of printing seats 2
Pressure is adjusted or does not adjust.
Preferably, the executing agency 3 in the present invention can also be including cam structure 34, the cam structure 34
Protrusion 341 and scraper 24, which contradict, to be connected, and the connection handle 342 of the cam structure 34 is connect with controlled motor 33, passes through controlled electricity
Machine 33 rotates cam structure 34 along fulcrum 35, thus it is possible to vary protrusion 341 is to the pressure of scraper 24, to reach adjusting quantity of ink
Purpose (referring to Fig. 7).
Vision system 5 in the present invention includes at least camera and control software, since vision system 5 is the prior art,
It is not repeated them here in the present invention.
Common letterpress system has satellite-type idler wheel multicolour press and block form polychrome letterpress.The present invention
Method be suitble to after satellite-type idler wheel multicolour press and block form polychrome letterpress.
It will be apparent to those skilled in the art that can make various other according to the above description of the technical scheme and ideas
Corresponding change and deformation, and all these changes and deformation all should belong to the protection scope of the claims in the present invention
Within.
Claims (10)
1. a kind of control method of intelligence letterpress force of impression, it is characterised in that: include the following steps,
S1, the standard saturation degree of printed matter and standard halftone dot image are passed through into vision system input control system, and stored；
S2, vision system at predetermined intervals the time acquisition printed on line printed matter real-time saturation degree and real-time halftone dot image,
And input control system；
S3, control system compare real-time saturation degree and real-time halftone dot image with standard saturation degree and standard halftone dot image respectively
Compared with；
S4, according to comparison result, control system controls the first executing agency and is adjusted to the coining power of printing seats；
S5, S2-S4 step is repeated, until printing stops.
2. the control method of intelligence letterpress force of impression according to claim 1, it is characterised in that: the acquisition is online
The method of the real-time halftone dot image of the printed matter of printing are as follows: take pictures to the picture and text edge of printed matter, and image is transported to
Control system.
3. the control method of intelligence letterpress force of impression according to claim 1 or 2, it is characterised in that: described first
Executing agency includes the screw rod for being located at printing seats two sides, and one end of every screw rod is connect with rack, and the every screw rod other end is set
One the first controlled motor, all first controlled motors and the control system are electrically connected.
4. the control method of intelligence letterpress force of impression according to claim 1 or 2, it is characterised in that: the acquisition
The method of the real-time saturation degree of the printed matter of printed on line are as follows: for the printed matter of polychrome chromatography, start to print every time
Predetermined interval when a kind of color, and later, at the separating white space between two neighboring printed matter, perpendicular to institute
The saturation degree measurement line of the direction of travel of printed matter is stated, the saturation degree of vision system acquisition measurement line is as real-time saturation degree.
5. the control method of intelligence letterpress force of impression according to claim 1 or 2, it is characterised in that: the acquisition
The method of the real-time saturation degree of the printed matter of printed on line are as follows: for monochromatic printed matter, when starting printing and it
Predetermined interval afterwards, at the separating white space between two neighboring printed matter, perpendicular to the traveling side of the printed matter
To saturation degree measure line, vision system acquisition measurement line saturation degree as real-time saturation degree；Or vision system is predetermined
Interval time is directly to the saturation degree of any section acquisition of the direction of travel perpendicular to the printed matter of printed matter as real
When saturation degree.
6. the control method of intelligence letterpress force of impression according to claim 1 or 2, it is characterised in that: the measurement
Line is continuous lines or interruption lines.
7. a kind of letterpress system, it is characterised in that: the roller platen (1) including being used for transmission stock, and with the pressure
Print multiple independent printing seats (2) of roller (1) contact, it is characterised in that: further include the first executing agency (6), control system
(4) and with the control system (4) vision system (5) being electrically connected, first executing agency (6) include being located at printing seats
(2) one end of the screw rod (61) of two sides, every screw rod (61) is connect with rack (62), and every screw rod (61) other end sets one
First controlled motor (63), all first controlled motors (63) and the control system (4) are electrically connected.
8. letterpress system according to claim 7, it is characterised in that: the printing seats (2) include at least with it is described
Roller platen (1) contacts and realizes the relief printing plate roller (21) of printing and contact and be used for as the relief printing plate with the relief printing plate roller (21)
The side of the drop roller (22) of roller (21) ink supply, the drop roller (22) is provided with print cartridge (23), the drop roller (22)
Bottom is immersed in the ink in print cartridge (23), and the side of the drop roller (22) is provided with the scraper contacted with drop roller (22)
(24), the scraper (24) is located at the drop roller (22) from the position taken when producing after ink in the print cartridge (23).
9. letterpress system according to claim 8, it is characterised in that: it further include the second executing agency (3), described
Two executing agencies (3) include adjustment seat (31) and several adjusting screw rods (32) being located on adjustment seat (31), the adjustment seat
(31) it is parallel to the scraper (24) setting, one end of each adjusting screw rod (32) is resisted against on the scraper (24), often
The other end of a adjusting screw rod (32) is respectively provided with second controlled motor (33), all second controlled motors (33) and institute
State control system (4) electric connection.
10. according to letterpress system described in claim 7,8 or 9, it is characterised in that: the vision system (5) is by predetermined
The real-time saturation degree of the printed matter of interval time acquisition printed on line and real-time halftone dot image, and input control system；Control system
Real-time saturation degree and real-time halftone dot image are compared with standard saturation degree and standard halftone dot image by system (4) respectively；According to than
Pair as a result, control system (4) control the first executing agency (6) the coining power of printing seats (2) is adjusted or is not adjusted.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112455061A (en) * | 2020-11-23 | 2021-03-09 | 固高科技(深圳)有限公司 | Machine vision-based electric carving driving method and device and electric carving control system |
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| CN112455061B (en) * | 2020-11-23 | 2022-07-29 | 固高科技股份有限公司 | Machine vision-based electric carving driving method and device and electric carving control system |
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Application publication date: 20190517 |