CN-117445565-B - Control method and device of printing medium conveying mechanism and printing equipment

CN117445565BCN 117445565 BCN117445565 BCN 117445565BCN-117445565-B

Abstract

The invention relates to the technical field of ink-jet printing, solves the technical problem that the prior printing medium can not be reliably and stably conveyed in different directions, and provides a control method, a device and printing equipment of a printing medium conveying mechanism, wherein the printing medium conveying mechanism comprises: the control method of the printing medium conveying mechanism comprises the following steps of sequentially arranging a first rotating mechanism with a first rotating shaft and a first motor, a second rotating mechanism with a second rotating shaft and a second motor and a third rotating mechanism with a third rotating shaft and a third motor, wherein the first motor, the second motor and the third motor respectively have a first rotating line speed V 1 , a second rotating line speed V 2 and a third rotating line speed V 3 , and the control method of the printing medium conveying mechanism comprises the following steps: when the printing medium is transported in the first direction transporting mode and the second direction transporting mode, the motors are controlled to satisfy V 2 ≥V 3 ≥V 1 and V 2 ≥V 1 ≥V 3 in the two-phase reversing direction, respectively. The invention has the advantage of reliably and stably conveying the printing medium in different directions.

Inventors

HUANG FEI
TANG TAO
CHEN YAN

Assignees

深圳市汉森软件股份有限公司

Dates

Publication Date: 20260512
Application Date: 20220718

Claims (9)

1. A control method of a printing medium conveying mechanism, the printing medium conveying mechanism including a first rotating mechanism, a second rotating mechanism and a third rotating mechanism which are sequentially arranged, wherein the first rotating mechanism includes a first rotating shaft and a first motor which are rotatably connected, the second rotating mechanism includes a second rotating shaft and a second motor which are rotatably connected, and the third rotating mechanism includes a third rotating shaft and a third motor which are rotatably connected, wherein the first motor has a first rotational line speed V 1 , the second motor has a second rotational line speed V 2 , the third motor has a third rotational line speed V 3 , and both ends of a printing medium are respectively wound on the first rotating mechanism and the third rotating mechanism in a roll form, the control method comprising: Determining whether to convey the printing medium in a first direction conveying mode or a second direction conveying mode, wherein the first direction is opposite to the second direction; When the printing medium is conveyed in the first direction conveying mode, controlling the first motor, the second motor and the third motor to rotate in a first rotating direction and meet V 2 ≥V 3 ≥V 1 ; When the printing medium is conveyed in the second direction conveying mode, controlling the first motor, the second motor and the third motor to rotate in a second rotating direction opposite to the first rotating direction and meeting V 2 ≥V 1 ≥V 3 ; The printing medium conveying mechanism further comprises a first sensor and a second sensor for detecting a first radius value R 1 and a second radius value R 2 of the printing medium wound on the first rotating shaft and the third rotating shaft respectively, wherein the step of conveying the printing medium in the first direction comprises dynamically adjusting the numerical values of V 1 、V 2 and V 3 according to the detected numerical values of R 1 and R 2 , and the step of conveying the printing medium in the second direction comprises dynamically adjusting the numerical values of V 1 、V 2 and V 3 according to the detected numerical values of R 1 and R 2 .
2. The control method according to claim 1, wherein the first motor and the third motor are respectively provided with a first clutch and a second clutch, and wherein in the step of determining whether to convey the printing medium in the first direction conveying mode or the second direction conveying mode, the control method further comprises controlling operations of the first clutch and the second clutch to realize that the first motor and the third motor switch between the first rotation direction and the second rotation direction in synchronization.
3. The method of claim 1, wherein the first motor, the second motor, and the third motor are each configured to have a pulse per second of W 1 、W 2 、W 3 , a pulse per second of P1, P2, and P3, and the first motor, the second motor, and the third motor each have a drive diameter of D 1 ,D 2 ,D 3 , wherein D 1 =2R 1 , and D 3 =2R 2 , respectively, and wherein the step of dynamically adjusting W 1 and W 3 to satisfy V 2 ≥V 3 ≥V 1 when the printing medium is conveyed in the first direction conveying mode comprises dynamically adjusting W 1 and W 3 to satisfy V 2 ≥V 1 ≥V 3 based on the obtained R 1 and R 2 detection values.
4. The method according to any one of claims 1 to 3, wherein the printing medium conveying mechanism further includes a fourth rotating mechanism and a fifth rotating mechanism, the fourth rotating mechanism being disposed between the first rotating mechanism and the second rotating mechanism, the fifth rotating mechanism being disposed between the second rotating mechanism and the third rotating mechanism, the fourth rotating mechanism including a fourth rotating shaft and a fourth motor rotatably connected, the fifth rotating mechanism including a fifth rotating shaft and a fifth motor rotatably connected, the fourth motor having a fourth rotational linear velocity V 4 and the fifth motor having a fifth rotational linear velocity V 5 , the step including controlling each motor to rotate in a first rotational direction and satisfying V 2 =V 5 ≥V 3 ≥V 4 =V 1 when the printing medium is conveyed in the second direction conveying mode, and the step including controlling each motor to rotate in a second rotational direction and satisfying V 2 =V 4 ≥V 1 ≥V 5 =V 3 when the printing medium is conveyed in the first direction conveying mode.
5. The method of claim 1, wherein the step of controlling the first motor, the second motor, and the third motor to sequentially stop when R 1 decreases to a predetermined R 1min , and wherein the step of controlling the third motor, the second motor, and the first motor to sequentially stop when R 2 decreases to a predetermined R 2min .
6. The method of claim 1, wherein the print media transport mechanism further comprises a print platform disposed between the first and second rotary mechanisms for supporting movement of the print media such that the print media receives ink from a nozzle positioned above the print carriage at an ink ejection speed V Spraying , wherein the step of controlling V 2 to match V Spraying when transporting the print media in the first direction transport mode, and wherein the step of controlling V 2 to match V Spraying when transporting the print media in the second direction transport mode.
7. The method according to claim 6, wherein the step of transporting the printing medium in the first direction transporting mode includes controlling V 2 to be within a limit speed V Electrode supported by an ink jet waveform of V Spraying , and the step of transporting the printing medium in the second direction transporting mode includes controlling V 2 to be within a limit speed V Electrode supported by an ink jet waveform of V Spraying .
8. A control device for a printing medium conveying mechanism, the printing medium conveying mechanism further comprising a first sensor and a second sensor for detecting a first radius value R 1 and a second radius value R 2 of a printing medium wound around a first rotation axis and a third rotation axis, respectively, the control device comprising: a mode determination module for determining whether to operate in a first direction conveyance mode or a second direction conveyance mode; The motor control module is used for controlling rotation of a first motor, a second motor and a third motor, wherein the first motor has a first rotation linear speed V 1 , the second motor has a second rotation linear speed V 2 , and the third motor has a third rotation linear speed V 3 ; When the mode determining module determines that the printing medium is conveyed in the first direction conveying mode, the motor control module dynamically adjusts the values of V 1 、V 2 and V 3 according to the detection values of R 1 and R 2 and correspondingly controls the first motor, the second motor and the third motor to rotate in the first rotating direction respectively and meet V 2 ≥V 3 ≥V 1 ; When the mode determining module determines that the printing medium is conveyed in the second direction conveying mode, the motor control module dynamically adjusts the values of V 1 、V 2 and V 3 according to the detection values of R 1 and R 2 and correspondingly controls the first motor, the second motor and the third motor to rotate in the second rotation direction respectively and meet V 2 ≥V 1 ≥V 3 .
9. A printing apparatus comprising a head, a controller and a printing medium conveying mechanism, the controller controlling the head and the printing medium conveying mechanism to operate, respectively, characterized in that the controller executes the control method according to any one of claims 1 to 7.

Description

Control method and device of printing medium conveying mechanism and printing equipment Technical Field The present invention relates to the field of inkjet printing technologies, and in particular, to a method and apparatus for controlling a printing medium conveying mechanism, and a printing device. Background Inkjet printing technology refers to technology in which ink droplets are ejected through a head onto a printing medium to obtain an image or text. The technology is non-contact printing, has the technical advantages of high printing speed, small pollution, bright image color, long image retention period, suitability for various printing media and the like, and is widely applied to the fields of advertisement manufacture, office cultural goods devices, printing, proofing and the like. In the single Pass coiled material printing process, the printing medium is generally conveyed by the friction force between the printing medium and the surfaces of each transmission part, and the radii of feeding and receiving materials are continuously changed in the printing process in a roll form of the printing medium serving as coiled materials, when the printing medium is conveyed in one direction only, the printing medium can be solved by setting each transmission part to have different speed differences, but for the situation that the printing medium is conveyed in the other opposite direction, corresponding designs are not developed correspondingly, and for many factories and users adopting single Pass, paper withdrawal checking printing effect is generally required or forward and reverse printing functions are supported, so that the conventional printing technology cannot provide the conveying functions of the printing medium in the different directions expected by customers. Accordingly, there is a need for a control method, apparatus, and printing apparatus for a printing medium conveying mechanism that can reliably and stably convey printing medium in different directions. Disclosure of Invention The present invention addresses the shortcomings of the prior art described above, and to achieve one object of the present invention, there is provided a control method of a printing medium conveying mechanism including a first rotating mechanism, a second rotating mechanism and a third rotating mechanism which are sequentially provided, wherein the first rotating mechanism includes a first rotating shaft and a first motor which are rotatably connected, the second rotating mechanism includes a second rotating shaft and a second motor which are rotatably connected, and the third rotating mechanism includes a third rotating shaft and a third motor which are rotatably connected, wherein the first motor has a first rotational line speed V 1, the second motor has a second rotational line speed V 2, the third motor has a third rotational line speed V 3, both ends of the printing medium are wound on the first rotating mechanism and the third rotating mechanism in a roll form, respectively, and the control method includes determining whether to convey the printing medium in a first direction conveying mode or a second direction conveying mode, wherein the first direction is opposite to the second direction, controlling the first motor, the second motor and the third motor to both rotate in the first direction and the second direction of rotation V 3 are satisfied when the printing medium is conveyed in the first direction conveying mode, and controlling the first motor to both rotate in the opposite direction to the first direction and the first direction of rotation V 2≥V3≥V1 when the first motor and the first direction of rotation is satisfied. Further, the first motor and the third motor are respectively provided with a first clutch and a second clutch, and in the step of determining whether to convey the printing medium in the first direction conveying mode or the second direction conveying mode, the method further comprises controlling the operation of the first clutch and the second clutch to realize that the first motor and the third motor synchronously switch between the first rotating direction and the second rotating direction. Further, the printing medium conveying mechanism further comprises a first sensor and a second sensor for detecting a first radius value R 1 and a second radius value R 2 of the printing medium wound on the first rotating shaft and the third rotating shaft respectively, wherein the step of conveying the printing medium in the first direction conveying mode comprises dynamically adjusting the values of V 1、V2 and V 3 according to the detected values of R 1 and R 2, and the step of conveying the printing medium in the second direction conveying mode comprises dynamically adjusting the values of V 1、V2 and V 3 according to the detected values of R 1 and R 2. Further, the first motor, the second motor and the third motor are set to W 1、W2、W3 respectively, P1, P2 and P3 respectively for each