CN212979562U - Automatic control device for online air blowing and flattening of offset printing - Google Patents
Automatic control device for online air blowing and flattening of offset printing Download PDFInfo
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- CN212979562U CN212979562U CN202021575848.4U CN202021575848U CN212979562U CN 212979562 U CN212979562 U CN 212979562U CN 202021575848 U CN202021575848 U CN 202021575848U CN 212979562 U CN212979562 U CN 212979562U
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Abstract
The utility model relates to an offset printing is bloied on line and is flattened automatic control device. The flattening device is provided with a blowing assembly, the blowing assembly is arranged at a position close to the embossing roller and comprises a blowing box, a fan for conveying airflow to the blowing box and a PLC (programmable logic controller), the fan is connected with a frequency converter for controlling the rotating speed of the fan, and the frequency converter is connected with the PLC; the blowing box is connected with a pressure sensor and a temperature sensor which are both connected with the PLC. The utility model discloses simple structure, it is easy and simple to handle, in the online production process of product, the inside wind pressure of pressure sensor monitoring box of blowing, the inside wind temperature of temperature sensor monitoring box of blowing simultaneously with signal transmission to PLC controller, PLC controller control converter adjustment fan rotational speed, can automatic control blow the wind pressure of exhibition paper-back edition and put, blow the exhibition paper-back edition to the product and handle attached on the roller surface of impression roller, the camera of being convenient for formation of image gathers high-quality picture.
Description
Technical Field
The utility model belongs to the technical field of the lithography apparatus technique and specifically relates to an offset printing online blowing exhibition automatic control device.
Background
With the development of computer science, machine vision technology plays an increasingly important role in the printing industry as a new quality control method. The real-time printing defect detection system adopts machine vision as a core technology, and can effectively detect and control the production process of the printed products. Real-time printing defects are detected on an offset printing machine, but due to the characteristics of the offset printing machine, after products are printed by a rubber roller and an impression roller of the offset printing machine, the printed products can leave the surface of the impression roller due to the revolving centrifugal force, and therefore considerable difficulty is caused in detecting the printing defects. In view of the above problems, the current solutions are: and blowing and flattening the printed product, so that the printed product can still be attached to the surface of the roller of the impression roller after leaving the rubber roller and the impression roller of the offset press for printing and passing through a detection area.
Products with different weights have different centrifugal forces under different diameter rollers and different revolution numbers, when the products attached to the impression roller rotate, the pressure for air blowing and flattening must be greater than the centrifugal force of the products, and the products can be effectively pressed and attached to the impression roller. The existing wind pressure adjustment adopts manual operation, changes the wind pressure of blowing flattening by the adjustment of the frequency of a frequency converter, needs repeated test recording before each production, and obtains the wind pressure condition suitable for the production through multiple attempts; however, once a new product or a change in production conditions occurs, such as an increase in production speed, or the diameters of the embossing rollers of different devices are different, and the original production conditions cannot be applied, the test and adjustment must be performed again, that is, the production conditions obtained by manual operation do not have general popularization.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art and provides an automatic control device for online air blowing and flattening of offset printing.
The utility model provides a technical scheme that its technical problem adopted is: an automatic control device for online air blowing and flattening of offset printing is provided with an air blowing assembly, wherein the air blowing assembly is arranged at a position close to an embossing roller, and a product is tightly attached to the surface of the embossing roller by air flow generated by the air blowing assembly;
the blowing assembly comprises a blowing box, a fan for conveying airflow to the blowing box and a PLC (programmable logic controller), the central axis of the blowing box is parallel to the central axis of the embossing roller, the fan is connected with a frequency converter for controlling the rotating speed of the fan, and the frequency converter is connected with the PLC;
the wind blowing box is connected with a pressure sensor for monitoring the wind pressure inside the wind blowing box and a temperature sensor for monitoring the wind temperature inside the wind blowing box, and the pressure sensor and the temperature sensor are both connected with the PLC.
The pressure sensor monitors the internal air pressure of the blowing box, transmits a signal to the PLC, and the PLC controls the frequency converter to adjust the rotating speed of the fan.
When the product attached to the imprinting roller rotates, the pressure for blowing and flattening must be greater than the centrifugal force of the product, so that the product can be effectively pressed and attached to the imprinting roller. When the wind pressure is too big, except that the energy consumption is bare-going, the wind pressure is higher, it is higher also to show that fan moving rotational speed is higher, the heat of production is also higher just, the heat is taken away via wind, wind temperature also follows to rise, if the product is little, although the exhibition is flat, but only a part temperature of taking away of product, the temperature of unnecessary wind temperature can be accumulated on the roller, the temperature of follow-up product can be influenced in turn to the temperature of this kind of accumulation, and cause the dry water phenomenon of follow-up product printing ink. The effect of temperature sensor can not cause the phenomenon of product printing ink dry water at the protection wind temperature, if when the wind temperature was too high, temperature sensor transmission signal to PLC controller, PLC controller control siren sent the police dispatch newspaper to control the converter simultaneously and adjust the fan deceleration, in order to avoid causing the loss.
Furthermore, the blowing assembly is arranged at a position, close to an imaging point, on the impression roller, and the product is convenient for camera imaging collection after being flattened.
Furthermore, a touch screen is connected to the PLC and used for inputting production conditions and displaying blowing flattening production conditions.
Furthermore, an alarm is connected to the PLC controller.
Furthermore, a signal lamp is connected to the PLC controller.
Furthermore, an air pipe is connected between the fan and the blowing box.
The utility model has the advantages that: the utility model discloses simple structure, reasonable in design, easy and simple to handle, in the online production process of product, the inside wind pressure of pressure sensor monitoring box of blowing, the inside wind temperature of temperature sensor monitoring box of blowing simultaneously with signal transmission to PLC controller, PLC controller control converter adjustment fan rotational speed, can automatic control blowing exhibition paper-back edition device's wind pressure, the exhibition paper-back edition that bloies to the product is handled attached on the roller surface of impression roller, the camera of being convenient for formation of image gathers high-quality picture.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the blowing assembly.
In the figure: 1. the printing device comprises an embossing roller, 2 products, 3 a blowing assembly, 4 imaging points, 5 a blowing box, 6 an air pipe, 7 a fan, 8 a frequency converter, 9 a PLC (programmable logic controller), 10 a temperature sensor, 11 a pressure sensor, 12 a touch screen, 13 an alarm and 14 a signal lamp.
Detailed Description
The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
The offset printing on-line blowing flattening automatic control device as shown in fig. 1-2, wherein a dotted line represents a camera detection light path, the device is provided with a blowing assembly 3, the blowing assembly 3 is arranged at a position close to an imprinting roller 1, and an air flow generated by the blowing assembly 3 clings a product 2 to the surface of the imprinting roller 1; the blowing assembly 3 comprises a blowing box 5, a fan 7 for conveying airflow to the blowing box 5 and a PLC (programmable logic controller) 9, the central axis of the blowing box 5 is parallel to the central axis of the embossing roller 1, an air pipe 6 is connected between the fan 7 and the blowing box 5, a frequency converter 8 for controlling the rotating speed of the fan 7 is connected to the fan 7, and the frequency converter 8 is connected with the PLC 9;
the wind blowing box 5 is connected with a pressure sensor 11 for monitoring the wind pressure inside the wind blowing box 5 and a temperature sensor 10 for monitoring the wind temperature inside the wind blowing box 5, and the pressure sensor 11 and the temperature sensor 10 are both connected with the PLC 9.
The blowing assembly 3 is mounted on the impression cylinder 1 in a position close to the imaging spot 4.
The PLC controller 9 is connected with a touch panel 12, an alarm 13, and a signal lamp 14.
The touch screen 12 is provided with a product data parameter setting key, an automatic key, a manual key, a stop key and a display screen; the signal lamp 14 is provided with red, yellow, green and blue lamps.
The automatic control device for the online air blowing and flattening of the offset printing has the following operation steps during production:
(1) inputting relevant information of the product on the touch screen 12, such as: the weight, width, length, production speed, whether to harden the paper and temperature setting of the product;
(2) pressing an automatic key on the touch screen 12 to start the fan 7 to automatically operate; the running state of the fan 7 is displayed by a signal lamp 14, a red light shows that the fan 7 is in a stop state, a yellow light shows that the fan 7 is in an abnormal state, a green light shows that the fan 7 is in running, a blue light shows that the fan 7 is in an automatic running state, and the fan 7 can be automatically started to run or stopped in cooperation with production;
when the fan 7 runs, if the pressure sensor 11 monitors that the air pressure in the air blowing box 5 is smaller than a set value, a signal is transmitted to the PLC 9, and the PLC 9 controls the frequency converter 8 to adjust the fan 7 to accelerate; if the temperature sensor 10 monitors that the air temperature in the air blowing box 5 is higher than a set value, the temperature sensor 10 transmits a signal to the PLC 9, the PLC 9 controls the signal lamp 14 to display a yellow light and the alarm 13 to send out an alarm signal, and controls the frequency converter 8 to adjust the speed of the fan 7 to reduce so as to avoid loss
(3) And when the production is finished, pressing a stop key on the touch screen 12 to stop the operation of the fan 7.
The automatic control device for online air blowing and flattening of offset printing comprises the following operation steps during maintenance: if the fan 7 needs to be operated, pressing a manual key on the touch screen 12 to start the fan 7 to operate; if the fan 7 is not needed to be used, the stop key is pressed on the touch screen 12, and the fan 7 stops running.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (6)
1. The utility model provides an offset printing is bloied on line and is flattened automatic control device which characterized in that: the stamping device is provided with a blowing assembly (3), the blowing assembly (3) is arranged at a position close to the stamping roller (1), and the product (2) is tightly attached to the surface of the stamping roller (1) by airflow generated by the blowing assembly (3);
the blowing assembly (3) comprises a blowing box (5), a fan (7) for conveying airflow to the blowing box (5) and a PLC (programmable logic controller) (9), the central axis of the blowing box (5) is parallel to the central axis of the embossing roller (1), the fan (7) is connected with a frequency converter (8) for controlling the rotating speed of the fan (7), and the frequency converter (8) is connected with the PLC (9);
the wind blowing box (5) is connected with a pressure sensor (11) for monitoring the internal wind pressure of the wind blowing box (5) and a temperature sensor (10) for monitoring the internal wind temperature of the wind blowing box (5), and the pressure sensor (11) and the temperature sensor (10) are both connected with the PLC (programmable logic controller) controller (9).
2. The offset printing online blowing flattening automatic control device according to claim 1, characterized in that: the blowing assembly (3) is arranged on the stamping roller (1) and is close to the position of the imaging point (4).
3. The offset printing online blowing flattening automatic control device according to claim 1, characterized in that: and the PLC (9) is connected with a touch screen (12).
4. The offset printing online blowing flattening automatic control device according to claim 1, characterized in that: and the PLC (9) is connected with an alarm (13).
5. The offset printing online blowing flattening automatic control device according to claim 1, characterized in that: and the PLC (9) is connected with a signal lamp (14).
6. The offset printing online blowing flattening automatic control device according to claim 1, characterized in that: an air pipe (6) is connected between the fan (7) and the air blowing box (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021575848.4U CN212979562U (en) | 2020-07-31 | 2020-07-31 | Automatic control device for online air blowing and flattening of offset printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021575848.4U CN212979562U (en) | 2020-07-31 | 2020-07-31 | Automatic control device for online air blowing and flattening of offset printing |
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| Publication Number | Publication Date |
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| CN212979562U true CN212979562U (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021575848.4U Active CN212979562U (en) | 2020-07-31 | 2020-07-31 | Automatic control device for online air blowing and flattening of offset printing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370800A (en) * | 2021-12-31 | 2022-04-19 | 崇辉半导体(深圳)有限公司 | Alarm system is reminded to continuous electroplating production line material area soldered connection |
-
2020
- 2020-07-31 CN CN202021575848.4U patent/CN212979562U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370800A (en) * | 2021-12-31 | 2022-04-19 | 崇辉半导体(深圳)有限公司 | Alarm system is reminded to continuous electroplating production line material area soldered connection |
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