Position searching device for gear separation and resetting of ink printing equipment

Abstract

The invention discloses a position searching device for gear separation and resetting of ink printing equipment, which comprises a plate roller gear and a bottom roller gear which can be meshed or separated, and further comprises an adjusting transmission assembly, a positioning assembly and a positioning assembly, the adjusting driving unit is used for being in clutch transmission fit with the transmission assembly; the adjusting transmission assembly comprises a driven gear which is in coaxial transmission fit with the printing roller gear, a driving gear which is in clutch transmission with the adjusting driving unit, and a printing roller original point electric eye which is used for monitoring and recording the initial direction of the driving gear. The driven gear is in transmission fit with the driving gear, so that the driven gear, the driving gear and the printing roller gear act synchronously; and when the printing roller gear needs to be reset and switched from the separation state to the meshing state, the driving gear is driven by the adjusting driving unit to rotate and reset to the initial direction recorded by the printing roller original point electric eye in advance.

Description

Technical Field

[0001] The invention relates to the technical field of household paper printing equipment, in particular to a positioning device for separating and resetting gears of water-based ink printing equipment. Background Art

[0002] Existing water-based ink printing equipment generally consists of a bottom roller, a printing plate roller and other components, wherein the printing plate roller performs roller coating printing on the paper web wound on the roller surface of the bottom roller. Therefore, after a period of use, stains such as ink will remain on the roller surface of the printing plate roller. If it is not cleaned in time, it will affect the clarity and accuracy of the subsequent printed pattern, and even cause the problem of paper web contamination. In response to this problem, the patent "CN115782400A, a water-based ink printing equipment with an online cleaning device" discloses a water-based ink printing equipment that, when printing stops and needs to be cleaned, the bottom roller and the plate roller are relatively separated and in a separated state, and the printing plate roller is cleaned by an online cleaning device.

[0003] However, after the bottom roller and the plate roller are separated, cleaned and reset, the reset meshing position is likely to deviate from the original position, which in turn causes the pattern to shift out of position, affecting subsequent normal printing. At this time, manual re-pattern proofreading is required, which is energy-consuming and time-consuming, greatly affecting subsequent production work. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a positioning device for separating and resetting gears of a water-based ink printing device.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a positioning device for separating and resetting gears of a water-based printing device, comprising a plate roller gear and a bottom roller gear that can be engaged or separated. Also includes: Adjust the transmission assembly: used to achieve coaxial transmission cooperation with the plate roller gear; Adjust the drive unit: used to cooperate with the transmission assembly for clutch transmission; The adjustment transmission assembly includes a driven gear that is coaxially driven with the plate roller gear, a driving gear that is clutched with the adjustment drive unit, and a plate roller origin electric eye for monitoring and recording the initial position of the driving gear, wherein the driven gear is driven and matched with the driving gear to enable the driven gear, the driving gear and the plate roller gear to move synchronously; when the plate roller gear needs to be reset from a separated state to an engaged state, the driving gear is driven in advance by the adjustment drive unit to rotate and reset to the initial position recorded by the plate roller origin electric eye.

[0006] Furthermore, it also includes a bottom roller origin electric eye: used to monitor and record the initial position of the bottom roller gear in a separated state.

[0007] Furthermore, a synchronous belt is circulated between the driven gear and the driving gear.

[0008] Furthermore, the synchronous belt is equipped with a tensioning roller.

[0009] Furthermore, the adjustment drive unit includes a drive motor and a normally open pneumatic clutch connected to an output shaft of the drive motor, and the normally open pneumatic clutch is engaged and disengaged with the driving gear.

[0010] The present invention adopts the above-mentioned scheme, and its beneficial effect is that: through the synchronous engagement and separation of the plate roller gear and the bottom roller gear, accurate alignment between the plate roller and the printing bottom roller is achieved, especially ensuring that the plate roller can be quickly and accurately reset after cleaning or maintenance, avoiding the problem of pattern displacement, and improving the production efficiency and printing quality of the printing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of a positioning device.

[0012] Figure 2 It is a schematic diagram of the close contact state between the plate roller and the printing bottom roller.

[0013] Figure 3 It is a schematic diagram of the separation state of the plate roller and the printing bottom roller.

[0014] Among them, 1-plate roller gear, 2-bottom roller gear, 3-adjustment transmission assembly, 31-driven gear, 32-synchronous belt, 33-driving gear, 4-adjustment drive unit, 41-normally open pneumatic clutch, 5-plate roller origin electric eye, 6-bottom roller origin electric eye, 7-tensioning roller, 100 plate roller, 200-printing bottom roller. DETAILED DESCRIPTION

[0015] In order to facilitate the understanding of the present invention, the present invention is described more fully below with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0016] See attached Figure 1-3As shown, in this embodiment, a positioning device for separating and resetting gears of a water-based printing device is applicable to a household paper overprinting printing device, and includes a plate roller 100 and a printing bottom roller 200 that are pressed against each other and rotate, and the plate roller 100 and the printing bottom roller 200 are matched through gear transmission. Specifically, the plate roller 100 and the printing bottom roller 200 can be driven by an external preset cylinder or hydraulic cylinder to move relative to each other, so that the plate roller 100 and the printing bottom roller 200 can be relatively separated or pressed against each other. The positioning device includes a plate roller gear 1 and a bottom roller gear 2 that can be engaged or separated, wherein the plate roller gear 1 is fixedly sleeved at the end of the plate roller 100, and the bottom roller gear 2 is fixedly sleeved at the end of the bottom roller. As the plate roller 100 and the printing bottom roller 200 are relatively pressed against or separated, the plate roller gear 1 and the bottom roller gear 2 are correspondingly engaged or separated synchronously.

[0017] In this embodiment, it also includes an adjustment transmission assembly 3 for coaxial transmission with the plate roller gear 1, and an adjustment drive unit 4 for clutch transmission with the transmission assembly. The adjustment transmission assembly 3 includes a driven gear 31 coaxially transmitted with the plate roller gear 1, a driving gear 33 clutched with the adjustment drive unit 4, and a plate roller origin electric eye 5 for monitoring and recording the initial angle of the driving gear 33. Specifically, the driven gear 31 is coaxially fixedly sleeved on the end of the plate roller, so that the plate roller, the driven gear 31 and the plate roller gear 1 rotate coaxially and synchronously. Secondly, a synchronous belt 32 is circulated between the driven gear 31 and the driving gear 33, and the power transmission of the synchronous belt 32 is used to realize the synchronous rotation of the driven gear 31 and the driving gear 33, so that the driven gear 31, the driving gear 33 and the plate roller gear 1 are synchronized. Therefore, under normal working conditions, the plate roller gear 1 is used as a power input source to drive the plate roller and the driven gear 31 to rotate coaxially and synchronously, and the driving gear 33 is driven to rotate synchronously therewith through the synchronous belt 32. In addition, when it is necessary to clean the plate roller, the plate roller and the plate roller gear 1 are moved and switched to a separated state in advance. At this time, the plate roller gear 1 has no external power input, and the adjustment drive unit 4 intervenes and acts on the driving gear 33 as a power source, so that the plate roller is driven to rotate during the cleaning process through the driving gear 33, the synchronous belt 32 and the driven gear 31.

[0018] Furthermore, after the plate roller gear 1 is shut down, the plate roller origin electric eye 5 first monitors and records the angular position of the driving gear 33 at this time as the initial angular position, and the plate roller gear 1 then moves and switches to the separated state, so that when the plate roller gear 1 needs to be reset from the separated state to the engaged state, the driving gear 33 is driven to rotate and reset to the initial position recorded by the plate roller origin electric eye 5 in advance through the adjustment drive unit 4, ensuring that the driving gear 33 and the driven gear 31 can be reset and rotated to the origin position when separated, thereby ensuring that there is no misalignment when the plate roller gear 1 and the bottom roller gear 2 are closed and meshed, effectively avoiding the problem of pattern displacement, and being able to quickly resume normal printing production.

[0019] In this embodiment, the adjustment drive unit 4 includes a drive motor and a normally open pneumatic clutch 41 connected to the output shaft of the drive motor. The normally open pneumatic clutch 41 is clutched and matched with the driving gear 33. The normally open pneumatic clutch 41 can be clutched and matched by pneumatic, oil pressure and other methods. Its structure and principle belong to the known technology and will not be elaborated here. When the plate roller is in a normal working state, the normally open pneumatic clutch 41 remains in a separated state, so that the drive motor does not move and there is no transmission cooperation with the driving gear 33; on the contrary, when the plate roller is in a separated state, the normally open pneumatic clutch 41 remains in a closed state, so that the drive motor is transmission-matched with the driving gear 33, thereby ensuring that there is no phase difference between the drive motor and the plate roller. At this time, the drive motor can drive the plate roller to perform the rotation action in the cleaning process and the rotation reset action based on the initial position recorded by the plate roller origin electric eye 5.

[0020] In this embodiment, the synchronous belt 32 is provided with a tensioning roller 7 , that is, the synchronous belt 32 is partially wound around the roller surface of the tensioning roller 7 , and the tensioning wheel is used to adjust the tension of the synchronous belt 32 .

[0021] In this embodiment, in order to further improve the accuracy of close meshing, a bottom roller origin electric eye 6 is also included for monitoring and recording the initial position of the bottom roller gear 2 in a separated state, so that when the plate roller 100 completes the cleaning and resetting, the initial position of the bottom roller gear 2 pre-recorded by the bottom roller origin electric eye 6 can be used to promptly detect the displacement of the bottom roller gear 2 during the cleaning process, so that the operator can promptly reset the bottom roller gear 2 to its initial position.

[0022] In this embodiment, the positioning device for separating and resetting the gears of the water-based ink printing equipment realizes the precise alignment between the plate roller 100 and the printing bottom roller 200 through the synchronous meshing and separation of the plate roller gear 1 and the bottom roller gear 2, especially ensuring that the plate roller can be quickly and accurately reset after cleaning or maintenance, avoiding the problem of pattern displacement, and improving the production efficiency and printing quality of the printing equipment. The monitoring and recording functions of the plate roller origin electric eye 5 and the bottom roller origin electric eye 6 ensure the accuracy of the gears during the separation and resetting process, thereby ensuring the accuracy of the printing overprint. In addition, the configuration of the synchronous belt 32 and the tension roller 7 further improves the stability and reliability of the transmission. The use of the normally open pneumatic clutch 41 ensures the effective coordination between the drive motor and the plate roller under different working conditions, thereby realizing the precise control of the cleaning and resetting actions.

[0023] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any technician familiar with the art who, without departing from the scope of the technical solution of the present invention, makes more possible changes and modifications to the technical solution of the present invention using the technical content disclosed above, or modifications are all equivalent embodiments of the present invention. Therefore, any equivalent and equivalent changes made according to the ideas of the present invention without departing from the content of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning device for separating and resetting gears of a water-based printing device, comprising a plate roller gear (1) and a bottom roller gear (2) that can be engaged or separated, characterized in that: Also includes: Adjusting transmission assembly (3): used to realize coaxial transmission cooperation with the plate roller gear (1); An adjustment drive unit (4) is used to perform clutch transmission cooperation with the transmission component; The adjustment transmission assembly (3) comprises a driven gear (31) coaxially driven with the plate roller gear (1), a driving gear (33) clutched with the adjustment drive unit (4), and a plate roller origin electric eye (5) for monitoring and recording the initial position of the driving gear (33), wherein the driven gear (31) and the driving gear (33) are driven to synchronize the driven gear (31), the driving gear (33) and the plate roller gear (1); when the plate roller gear (1) needs to be reset from a separated state to an engaged state, the driving gear (33) is driven in advance by the adjustment drive unit (4) to rotate and reset to the initial position recorded by the plate roller origin electric eye (5).

2. A positioning device for separating and resetting gears of water-based ink printing equipment according to claim 1, characterized in that: It also includes a bottom roller origin electric eye (6) for monitoring and recording the initial position of the bottom roller gear (2) in a separated state.

3. The positioning device for separating and resetting gears of water-based ink printing equipment according to claim 1, characterized in that: A synchronous belt (32) is cyclically wound between the driven gear (31) and the driving gear (33).

4. The positioning device for separating and resetting gears of water-based ink printing equipment according to claim 3, characterized in that: The synchronous belt (32) is provided with a tensioning roller (7).

5. The positioning device for separating and resetting gears of water-based ink printing equipment according to claim 1, characterized in that: The adjustment drive unit (4) comprises a drive motor and a normally open pneumatic clutch (41) connected to an output shaft of the drive motor, wherein the normally open pneumatic clutch (41) is in clutch transmission cooperation with the driving gear (33).

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