CN102539818A - Stability detecting method and device for mechanical platform of printing system - Google Patents

Abstract

The invention provides a method for detecting the stability of a mechanical platform of a printing system, comprising: driving the mechanical platform to transmit a substrate; continuously detecting multiple marks of the substrate; timing the time difference between detected multiple marks; Based on the timing and the length between multiple markers, determine the actual velocity of the mechanical platform. The present invention provides a stability detection device for a mechanical platform of a printing system, comprising: a drive module, used to drive the mechanical platform to transfer substrates; a detection module, used to continuously detect multiple marks of substrates; a timing module , used to time the time difference between the detected multiple marks; the determination module is used to determine the actual speed of the mechanical platform according to the timing and the length between the multiple marks. Because of the adoption, the problem was overcome and the effect was achieved. The invention improves printing quality.

Description

Stability detection method and device for mechanical platform of printing system

technical field

The invention relates to the field of printing, in particular to a method and device for detecting the stability of a mechanical platform of a printing system. the

Background technique

The stability of the mechanical platform in the printing system has a great impact on the printing quality. If the mechanical platform is unstable, it will often appear out of position (inaccurate position), ghosting and other phenomena. At present, there is no testing equipment for the stability of the mechanical platform in the printing system. the

Contents of the invention

The present invention aims to provide a method and device for detecting the stability of a mechanical platform of a printing system, so as to solve the problem of detecting the stability of the mechanical platform in the printing system. the

In an embodiment of the present invention, a method for detecting the stability of a mechanical platform of a printing system is provided, including: driving the mechanical platform to convey a substrate; continuously detecting multiple marks of the substrate; detecting multiple marks detected The time difference between them is timed; according to the timed time and the length between multiple marks, the actual speed of the mechanical platform is determined. the

In an embodiment of the present invention, a device for detecting the stability of a mechanical platform of a printing system is provided, including: a drive module, used to drive the mechanical platform to transfer the substrate; a detection module, used to continuously detect the stability of the substrate A plurality of marks; a timing module, used to time the time difference detected between multiple marks; a determination module, used to determine the actual speed of the mechanical platform according to the timing and the length between the multiple marks. Because of the adoption, the problem was overcome and the effect was achieved. the

The method and device for detecting the stability of the mechanical platform of the printing system in the above embodiments of the present invention solve the problem of detecting the stability of the mechanical platform in the printing system by detecting the mark of the substrate, thereby improving the printing quality. the

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 shows the flow chart of the stability detection method for the mechanical platform of printing system according to the embodiment of the present invention;

Fig. 2 shows the flow chart of the stability detection method for the mechanical platform of printing system according to a preferred embodiment of the present invention;

Fig. 3 shows a schematic diagram of a stability detection device for a mechanical platform of a printing system according to an embodiment of the present invention. the

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. the

Fig. 1 shows a flow chart of a method for detecting stability of a mechanical platform of a printing system according to an embodiment of the present invention, including:

Step S10, driving the mechanical platform to transfer the substrate;

Step S20, continuously detecting multiple marks of the substrate;

Step S30, timing the time difference between the detected multiple marks;

Step S40, determine the actual speed of the mechanical platform according to the timing and the length between multiple marks, for example, V=ΔS/ΔT, V is the actual speed, ΔS is the length between two marks, and ΔT is the detected two Time difference between identities. the

This method judges the stability of the mechanical platform operation by detecting the paper-feeding time for the same distance. The method solves the problem of detecting the stability of the mechanical platform in the printing system by detecting the mark of the substrate, thereby eliminating the phenomena of position shifting (inaccurate position), ghosting and the like, and improving the printing quality. the

Preferably, the substrate is continuous paper, and the mark is a color mark on the continuous paper, and a color mark sensor is used to detect the color mark. When the printing system uses continuous paper printing, there are printed color marks on the continuous paper, and the distance between every two color marks is equal. Therefore, it is simple and easy to use the color code to judge the stability of the mechanical platform operation. the

Preferably, the substrate is a single sheet of paper, and the two edges of the single sheet of paper are identified, and a photoelectric trigger is used to detect the edges. When the printing system uses sheet-fed printing, the length of each page is equal, and for the detection of the sheet-fed platform, it is to measure the time it takes for the platform to run the length of a single sheet. The program is simple and easy to implement. the

Preferably, a counter is used for timing. When the mechanical platform is running at a certain speed, after the detection device samples an effective signal, the counting unit is started to count, and after an effective signal is sampled again, the counting unit stops counting. At this time, the value obtained by the counting unit is the paper-feeding time of the mechanical platform within a certain distance, so the stability of the mechanical platform at a certain speed can be evaluated by obtaining multiple paper-feeding times. the

Preferably, the mechanical platform is driven to convey the substrate at a set speed, and the method further includes: if it is determined that the actual speed is not equal to the set speed, adjusting the conveying speed of the mechanical platform so that the actual speed is equal to the set speed. This preferred embodiment realizes the automatic adjustment of the conveying speed of the mechanical platform, reducing the burden on the operator. the

Fig. 2 shows the flow chart of the stability detection method for the mechanical platform of printing system according to a preferred embodiment of the present invention, comprises the following steps:

Step S100, running the mechanical platform at a certain speed;

Step S101, detecting effective signals. When the mechanical platform adopts continuous paper, the effective signal is the color mark on the continuous paper. When the mechanical platform adopts single-sheet paper, the effective signals are the two edge signals of the single-sheet paper;

Step S102, calculate the time taken from detecting an effective signal to detecting the next effective signal, that is, the time required for the mechanical platform to run for a fixed length, and as the mechanical platform continues to run, a series of time values will be obtained;

In step S103, comparative analysis is performed on the obtained time value, and the stability of the platform at this speed is evaluated accordingly. the

Fig. 3 shows a schematic diagram of a stability detection device for a mechanical platform of a printing system according to an embodiment of the present invention, including:

The drive module 10 is used to drive the mechanical platform to transfer the substrate;

The detection module 20 is used to continuously detect multiple marks of the substrate;

Timing module 30, for detecting the time difference timing between a plurality of identifications;

The determining module 40 is configured to determine the actual speed of the mechanical platform according to the timing and the length between the multiple marks. the

This device improves print quality. the

Preferably, the substrate is continuous paper, and the mark is a color mark on the continuous paper, and the detection module 20 includes a color mark sensor for detecting the color mark. the

Preferably, the substrate is a sheet of paper, which is identified as two edges of the sheet of paper, and the detection module 20 includes a photoelectric trigger for detecting the edges. the

Preferably, the timing module 30 includes a counter for timing. When the detection module samples the mark, it sends a signal to inform the corresponding counter to start or stop counting. A total of three counters can be set, two of which are used in the continuous paper detection module and one counter is used in the single paper detection mode. When the mechanical platform adopts continuous paper, use two counters, because the counter for counting the color mark interval starts counting after sampling the first color mark signal, and stops counting when the second color mark signal is collected. , when the second color mark signal arrives, it means that the next interval has started, but because the previous counter value has not been processed, the previous counter is in an unavailable state. In order not to lose the interval data, counter 2 and counter 1 are set Alternate with counter 2. When using a sheet of paper, you only need to use a counter, because there is a certain distance between the paper, the counter has enough time to start the next count after completing one count. the

Preferably, the driving module 10 is used to drive the mechanical platform to convey the substrate at a set speed, and the device also includes: an adjustment module, used to adjust the conveying speed of the mechanical platform so that the actual speed is equal to the set speed if it is determined that the actual speed is not equal to the set speed. Set the speed. the

In practice, the drive module 10, the timing module 30, the determination module 40 and the adjustment module 50 can be integrated into a controller, and the controller can be realized by FPGA (Field Programmable Gate Array, Field Programmable Gate Array). A selection module can also be included inside the FPGA, which is used to select the paper feeding type of the mechanical platform, continuous paper or single paper, and then determine the corresponding detection mode. the

It can be seen from the above description that the above-mentioned embodiments of the present invention can simply and quickly analyze the stability of the mechanical platform in the printing system at a specified speed, as well as the stability difference at different operating speeds, and can also Help locate and analyze the problems of image quality in the printing process. the

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Optionally, they can be implemented with program codes executable by computing devices, so that they can be stored in storage devices and executed by computing devices, or they can be made into individual integrated circuit modules, or their Multiple modules or steps are implemented as a single integrated circuit module. As such, the present invention is not limited to any specific combination of hardware and software. the

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. the

Claims (10)

1. A stability detection method for a mechanical platform of a printing system, characterized in that, comprising: driving the mechanical platform to convey the substrate; Continuously detecting multiple marks of the substrate; timing the time difference between detecting the plurality of identities; The actual speed of the mechanical platform is determined according to the timing and the length between the plurality of markers. 2. The method according to claim 1, wherein the substrate is continuous paper, the mark is a color mark on the continuous paper, and a color mark sensor is used to detect the color mark. 3. The method according to claim 1, wherein the substrate is a sheet of paper, the marks are two edges of the sheet of paper, and a photoelectric trigger is used to detect the edges. 4. The method according to claim 1, characterized in that a counter is used for timing. 5. The method according to claim 1, wherein the mechanical platform is driven to convey the substrate at a set speed, and the method further comprises: If it is determined that the actual speed is not equal to the set speed, then adjusting the conveying speed of the mechanical platform so that the actual speed is equal to the set speed. 6. A stability detection device for a mechanical platform of a printing system, characterized in that it comprises: a driving module, configured to drive the mechanical platform to convey the substrate; A detection module, configured to continuously detect multiple marks of the substrate; a timing module, configured to time the detected time difference between the plurality of markers; A determining module, configured to determine the actual speed of the mechanical platform according to the timing and the length between the multiple marks. 7. The device according to claim 6, wherein the substrate is continuous paper, the mark is a color mark on the continuous paper, and the detection module includes a color mark sensor for detecting the Color code. 8. The device according to claim 6, characterized in that, the substrate is a sheet of paper, the marks are two edges of the sheet of paper, and the detection module includes a photoelectric trigger for detecting the edge. 9. The device according to claim 6, wherein the timing module comprises a counter for timing. 10. The device according to claim 6, wherein the drive module is used to drive the mechanical platform to transport the substrate at a set speed, and the device further comprises: An adjustment module, configured to adjust the conveying speed of the mechanical platform so that the actual speed is equal to the set speed if it is determined that the actual speed is not equal to the set speed.

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