CN111923589A - Secondary overprinting paper feeding mechanism of printing machine - Google Patents
Secondary overprinting paper feeding mechanism of printing machine Download PDFInfo
- Publication number
- CN111923589A CN111923589A CN202010840130.1A CN202010840130A CN111923589A CN 111923589 A CN111923589 A CN 111923589A CN 202010840130 A CN202010840130 A CN 202010840130A CN 111923589 A CN111923589 A CN 111923589A
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- Prior art keywords
- roller
- assembly
- driving
- overprinting
- printing
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- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000004587 chromatography analysis Methods 0.000 claims 2
- 238000007664 blowing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0036—Devices for scanning or checking the printed matter for quality control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
- B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/113—Size
- B65H2701/1131—Size of sheets
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Mechanical Engineering (AREA)
- Registering Or Overturning Sheets (AREA)
Abstract
The invention discloses a secondary overprinting paper feeding mechanism of a printing machine, which comprises a material placing frame, a traction mechanism, an overprinting system and a positioning traction mechanism, wherein the positioning traction mechanism is positioned at the front end of the overprinting system; the positioning traction mechanism comprises a driving roller, a pressing roller and a pressing roller driving assembly, the driving roller is parallel to the pressing roller, the driving roller is driven by the driving roller driving assembly to rotate, and the pressing roller is driven to approach the driving roller by virtue of the movement of the output end of the pressing roller driving assembly; still include the discernment subassembly, the pattern andor the color position that the discernment subassembly was set for after printing for the first time on to the paper monitors, the discernment subassembly is for drive roller drive assembly's rotational speed control provides reference signal.
Description
Technical Field
The invention belongs to the technical field of printing machines, and particularly relates to a secondary overprinting paper feeding mechanism of a printing machine.
Background
In the process of secondary overprinting, the conventional operation is to perform secondary printing after the first printing is finished, so that the secondary overprinting is realized, and the patterns of the printed matter are fuller and the layering is stronger. The traditional secondary overprinting generally adopts a method that drying is carried out after first printing, and then direct connection is carried out for second printing after drying, so that secondary overprinting is realized; however, there is a first printed paper or a second overprinting of a printing stock which forms a pattern in a non-printing manner, and in the process, due to the fluctuation of the printing machine or other external influences in the printing process, the pattern on the printing stock which performs the second printing often deviates from the plate roller pattern which performs the second overprinting of the printing machine, thereby causing defective products to appear; in addition, the overprinting position precision of the traditional secondary overprinting is not high, so that the quality of printed matters is difficult to improve, the requirements of high-end customers are difficult to meet, and the market competitiveness of the high-end customers is reduced.
Disclosure of Invention
The invention aims to provide a secondary overprinting paper feeding mechanism of a printing machine, which aims to solve the technical problems in the background technology.
In order to solve the technical problem, the invention aims to realize that:
a secondary overprinting paper feeding mechanism of a printing machine comprises a material placing frame, a traction mechanism, an overprinting system and a positioning traction mechanism, wherein the positioning traction mechanism is positioned at the front end of the overprinting system; the positioning traction mechanism comprises a driving roller, a pressing roller and a pressing roller driving assembly, the driving roller is parallel to the pressing roller, the driving roller is driven by the driving roller driving assembly to rotate, and the pressing roller is driven to approach the driving roller by virtue of the movement of the output end of the pressing roller driving assembly;
still include the discernment subassembly, the pattern andor the color position that the discernment subassembly was set for after printing for the first time on to the paper monitors, the discernment subassembly is for drive roller drive assembly's rotational speed control provides reference signal.
On the basis of the above scheme and as a preferable scheme of the scheme: the overprinting system further comprises a compensation assembly, and the compensation assembly is located between the overprinting system and the positioning traction mechanism.
On the basis of the above scheme and as a preferable scheme of the scheme: the compensation assembly comprises a compensation roller and an adjusting assembly, and the compensation roller is movably arranged at the output end of the adjusting assembly.
On the basis of the above scheme and as a preferable scheme of the scheme: the automatic positioning and pulling device is characterized by further comprising a deviation rectifying assembly, wherein the deviation rectifying assembly is located at the front end of the positioning and pulling mechanism.
On the basis of the above scheme and as a preferable scheme of the scheme: the press roller driving assembly comprises an air cylinder and a swing arm, one end of the swing arm is hinged to a frame body of the printing machine, the other end of the swing arm is hinged to the air cylinder, and the press roller is rotatably connected to the middle of the press roller.
Compared with the prior art, the invention has the outstanding and beneficial technical effects that: the pattern position on the printing stock is monitored through the identification assembly, so that the rotating speed of a driving roller driving assembly of the positioning traction mechanism is changed, the speed of paper fed into the overprinting system is changed, the overprinting pattern and the pattern of the printing roller are positioned, and the overprinting precision is improved; the compensation assembly can realize coarse adjustment of the positioning of the paper, so that the positioning precision of the paper is further improved, and the adjusting amplitude and the adjusting frequency of the positioning traction mechanism are reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
A secondary overprinting paper feeding mechanism of a printing machine comprises a material placing frame 100, a traction mechanism 200, an overprinting system 600 and a positioning traction mechanism 400, wherein the positioning traction mechanism 400 is positioned at the front end of the overprinting system 600; the positioning traction mechanism 400 comprises a driving roller 410, a compression roller 420 and a compression roller driving assembly 430, wherein the driving roller 410 is parallel to the compression roller 420, the driving roller 410 is driven by the driving roller driving assembly to rotate, and the compression roller 420 is driven to approach the driving roller 410 by the movement of the output end of the compression roller driving assembly 430; in this embodiment, it is preferable that the press roller driving assembly 430 includes an air cylinder and a swing arm, one end of the swing arm is hinged to the frame body of the printing machine, the other end of the swing arm is hinged to the air cylinder, the press roller 420 is rotatably connected to the middle of the press roller, when the air cylinder is in an initial state, a piston rod of the air cylinder extends out, and when the printing machine works, the piston rod of the air cylinder retracts to drive the press roller 420 to approach the driving roller 410, so as to clamp the printing material between the driving roller 410; further, in this embodiment, it is preferable that the driving roller driving assembly is a servo motor, and the driving roller is fixedly disposed at an output end of the servo motor, so that the driving roller is driven to synchronously rotate when the servo motor rotates, and the paper is further conveyed to the overprinting system 600 at a proper speed.
It should be noted that the stocker 100, the drawing mechanism 200, and the overprinting system 600 in this embodiment are all the same as those in the prior art. In the present embodiment, the substrate is a paper sheet.
Further, in order to enable the original pattern on the printing stock to match the pattern on the plate roller of the overprinting system 600, the embodiment further comprises an identification component, the identification component monitors the pattern and/or color position set after the first printing on the paper, and the identification component provides a reference signal for controlling the rotating speed of the driving roller driving component. In this embodiment, the preferred identification component may be a color mark sensor, the color mark sensor adapted to the pattern to be identified and/or the color is selected, and the position of the color mark sensor is fixed between the overprinting system 600 and the positioning traction mechanism 400, so that since the running speed of the overprinting system 600 is constant, the moving speed of the printing stock can be calculated by calculating the time difference between two patterns to be identified and/or the color and the distance between two patterns to be identified and/or the color monitored by the color mark sensor, and the moving speed is fed back to the positioning traction mechanism 400, and the rotating speed of the driving roller 410 is controlled by controlling the rotating speed of the servo motor, so as to change the conveying speed; specifically, the running speed of the overprinting system 600 is set as the reference speed of the identification assembly, and when the detected moving speed of the printing stock is higher than the reference speed, the rotating speed of the servo motor is reduced; when the detected moving speed of the printing stock is lower than the reference speed, the rotating speed of the servo motor is increased; therefore, the conveying speed of the driving roller to the printing stock ensures the matching of the pattern on the printing stock and the plate roller pattern of the overprinting system 600, and greatly improves the accuracy of the overprinting pattern. The software and the control program used in the present application are conventional technologies, and the present application controls the mechanical structure of the present application only by using the conventional software or control program, which is not the point of the present application.
A compensation assembly 500 is also included, the compensation assembly 500 being located between the overprint system 600 and the positional tractor mechanism 400. The compensating assembly 500 of the preferred embodiment comprises a compensating roller 510 and an adjusting assembly 520, wherein the compensating roller 510 is movably arranged at the output end of the adjusting assembly 520; specifically, the 520-position ball screw nut adjusting structure of the adjusting assembly can realize coarse adjustment of the positioning of the paper by means of the compensating assembly 500, so that the positioning precision of the paper is further improved, and the adjusting amplitude and the adjusting frequency of the positioning traction mechanism are reduced.
Further, the embodiment further comprises a deviation rectifying assembly 300, wherein the deviation rectifying assembly 300 is located at the front end of the positioning traction mechanism 400, and when the printing stock deviates in the printing process, the printing stock is timely rectified by the deviation rectifying assembly 300, so that the overprinting precision of the overprinting system 600 is improved.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (5)
1. The utility model provides a printing machine secondary chromatography paper feed mechanism, includes blowing frame (100), drive mechanism (200) and chromatography system (600), characterized by: the overprinting system further comprises a positioning traction mechanism (400), wherein the positioning traction mechanism (400) is positioned at the front end of the overprinting system (600); the positioning traction mechanism (400) comprises a driving roller (410), a pressing roller (420) and a pressing roller driving assembly (430), the driving roller (410) is parallel to the pressing roller (420), the driving roller (410) is driven by the driving roller driving assembly to rotate, and the pressing roller (420) is enabled to approach the driving roller (410) through the movement of the output end of the pressing roller driving assembly (430);
still include the discernment subassembly, the pattern andor the color position that the discernment subassembly was set for after printing for the first time on to the paper monitors, the discernment subassembly is for drive roller drive assembly's rotational speed control provides reference signal.
2. A secondary overprint sheet feeding mechanism for a printing press according to claim 1, wherein: further comprising a compensation assembly (500), the compensation assembly (500) being located between the overprinting system (600) and the positioning and pulling mechanism (400).
3. A secondary overprint sheet feeding mechanism for a printing press as set forth in claim 2, wherein: the compensation assembly (500) comprises a compensation roller (510) and an adjusting assembly (520), wherein the compensation roller (510) is movably arranged at the output end of the adjusting assembly (520).
4. A secondary overprint sheet feeding mechanism for a printing press according to claim 1, wherein: the device further comprises a deviation rectifying assembly (300), wherein the deviation rectifying assembly (300) is located at the front end of the positioning traction mechanism (400).
5. A secondary overprint sheet feeding mechanism for a printing press according to claim 1, wherein: the compression roller driving assembly (430) comprises an air cylinder and a swing arm, one end of the swing arm is hinged to a frame body of the printing machine, the other end of the swing arm is hinged to the air cylinder, and the compression roller (420) is rotatably connected to the middle of the compression roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010840130.1A CN111923589A (en) | 2020-08-20 | 2020-08-20 | Secondary overprinting paper feeding mechanism of printing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010840130.1A CN111923589A (en) | 2020-08-20 | 2020-08-20 | Secondary overprinting paper feeding mechanism of printing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111923589A true CN111923589A (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010840130.1A Pending CN111923589A (en) | 2020-08-20 | 2020-08-20 | Secondary overprinting paper feeding mechanism of printing machine |
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| Country | Link |
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| CN (1) | CN111923589A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200963928Y (en) * | 2006-09-23 | 2007-10-24 | 中山市松德包装机械有限公司 | Printing machine for realizing locating overprint |
| CN102039717A (en) * | 2009-10-16 | 2011-05-04 | 刘家斌 | Rotary intaglio printing press with positioned printing function |
| CN206124427U (en) * | 2016-10-31 | 2017-04-26 | 浙江美格机械股份有限公司 | Digital intaglio sandwich printing machine tension self -adaptation draw gear |
| WO2017080094A1 (en) * | 2015-11-13 | 2017-05-18 | 运城制版印刷机械制造有限公司 | Gravure printing device based on colour management operating system |
| CN108263072A (en) * | 2018-01-16 | 2018-07-10 | 汕头东风印刷股份有限公司 | A kind of roll web overprinting method |
| CN212604001U (en) * | 2020-08-20 | 2021-02-26 | 海盐吉龙机械股份有限公司 | Secondary overprinting paper feeding mechanism of printing machine |
-
2020
- 2020-08-20 CN CN202010840130.1A patent/CN111923589A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200963928Y (en) * | 2006-09-23 | 2007-10-24 | 中山市松德包装机械有限公司 | Printing machine for realizing locating overprint |
| CN102039717A (en) * | 2009-10-16 | 2011-05-04 | 刘家斌 | Rotary intaglio printing press with positioned printing function |
| WO2017080094A1 (en) * | 2015-11-13 | 2017-05-18 | 运城制版印刷机械制造有限公司 | Gravure printing device based on colour management operating system |
| CN206124427U (en) * | 2016-10-31 | 2017-04-26 | 浙江美格机械股份有限公司 | Digital intaglio sandwich printing machine tension self -adaptation draw gear |
| CN108263072A (en) * | 2018-01-16 | 2018-07-10 | 汕头东风印刷股份有限公司 | A kind of roll web overprinting method |
| CN212604001U (en) * | 2020-08-20 | 2021-02-26 | 海盐吉龙机械股份有限公司 | Secondary overprinting paper feeding mechanism of printing machine |
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