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

Abstract

The utility model discloses a position searching device for gear separation reset 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 component, a positioning component and a positioning component, 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] This utility model relates to the technical field of printing equipment for household paper, and in particular to a positioning device for gear separation and reset in water-based ink printing equipment. Background Technology

[0002] Existing water-based ink printing equipment generally consists of components such as a base roller and a printing plate roller. The printing plate roller applies ink coating to the paper web wound around the surface of the base roller. Therefore, after a period of use, ink and other stains will remain on the surface of the printing plate roller. If not cleaned in time, this will affect the clarity and accuracy of subsequent printed patterns, and may even lead to paper contamination. To address this problem, 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 cleaning is required, separates the base roller and printing plate roller, and then uses an online cleaning device to perform the relevant cleaning operations on the printing plate roller.

[0003] However, after the bottom roller and the printing roller have completed separation, cleaning and resetting, the resetting engagement position is prone to deviation from the original position, which in turn causes the pattern to shift and affects subsequent normal printing. At this time, manual re-pattern calibration is required, which is labor-intensive and time-consuming, and greatly affects subsequent production work. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a positioning device for gear separation and reset in water-based ink printing equipment.

[0005] To achieve the above objectives, this utility model provides a positioning device for gear separation and reset in a water-based ink printing equipment, comprising a plate roller gear and a bottom roller gear that can mesh or separate.

[0006] Also includes:

[0007] Adjust the transmission assembly: used to achieve coaxial transmission with the printing roller gear;

[0008] Adjustment drive unit: used for clutch and transmission engagement with the transmission components;

[0009] The adjustment transmission assembly includes a driven gear that is coaxially driven with the printing roller gear, a driving gear that is disengaged and driven by the adjustment drive unit, and a printing roller origin photoelectric sensor for monitoring and recording the initial position of the driving gear. The driven gear is driven and driven to make the driven gear, driving gear and printing roller gear move synchronously. When the printing roller gear needs to be reset from the disengaged state to the engaged state, the driving gear is driven to rotate and reset to the initial position recorded by the printing roller origin photoelectric sensor in advance by the adjustment drive unit.

[0010] Furthermore, it also includes a bottom roller origin photoelectric sensor: used to monitor and record the initial orientation of the bottom roller gear when it is in a separated state.

[0011] Furthermore, a synchronous belt is circulated between the driven gear and the driving gear.

[0012] Furthermore, the synchronous belt is equipped with tension rollers.

[0013] Furthermore, the adjustment drive unit includes a drive motor and a normally open pneumatic clutch connected to the output shaft of the drive motor, wherein the normally open pneumatic clutch engages and disengages with the drive gear.

[0014] The present invention adopts the above-mentioned solution, and its beneficial effects are as follows: through the synchronous meshing and separation of the plate roller gear and the bottom roller gear, the precise 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 misalignment, and improving the production efficiency and printing quality of the printing equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a positioning device.

[0016] Figure 2 This is a schematic diagram showing the close contact between the printing roller and the printing base roller.

[0017] Figure 3 This is a schematic diagram showing the separation of the printing roller and the printing base roller.

[0018] Among them, 1-printing roller gear, 2-bottom roller gear, 3-adjusting transmission assembly, 31-driven gear, 32-synchronous belt, 33-drive gear, 4-adjusting drive unit, 41-normally open pneumatic clutch, 5-printing roller origin photoelectric sensor, 6-bottom roller origin photoelectric sensor, 7-tensioning roller, 100-printing roller, 200-printing bottom roller. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description of it is provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0020] See appendix Figure 1-3As shown in this embodiment, a gear separation and reset positioning device for a water-based ink printing equipment is applicable to a tissue paper overprinting printing equipment. It includes a printing roller 100 and a printing base roller 200 that rotate in opposition to each other. The printing roller 100 and the printing base roller 200 are connected by gear transmission. Specifically, the printing roller 100 and the printing base roller 200 can be driven to move laterally relative to each other by an externally preset cylinder or hydraulic cylinder, achieving relative separation or proximity between the printing roller 100 and the printing base roller 200. The positioning device includes a plate roller gear 1 and a base roller gear 2 that can mesh or separate. The plate roller gear 1 is fixedly sleeved at the end of the plate roller 100, and the base roller gear 2 is fixedly sleeved at the end of the base roller. As the printing roller 100 and the printing base roller 200 move closer or separate relative to each other, the plate roller gear 1 and the base roller gear 2 mesh or separate synchronously.

[0021] In this embodiment, it also includes an adjustment transmission assembly 3 for coaxial transmission with the printing roller gear 1, and an adjustment drive unit 4 for engagement and disengagement with the transmission assembly. The adjustment transmission assembly 3 includes a driven gear 31 coaxially driven with the printing roller gear 1, a drive gear 33 engaging and disengaging with the adjustment drive unit 4, and a printing roller origin photoelectric sensor 5 for monitoring and recording the initial angular orientation of the drive gear 33. Specifically, the driven gear 31 is coaxially fixedly sleeved on the end of the printing roller, thereby causing the printing roller, the driven gear 31, and the printing roller gear 1 to rotate coaxially and synchronously. Secondly, a synchronous belt 32 is circulated between the driven gear 31 and the driving gear 33. The synchronous belt 32 transmits power to achieve synchronous rotation of the driven gear 31 and the driving gear 33, thereby causing the driven gear 31, the driving gear 33, and the printing roller gear 1 to move synchronously. Therefore, under normal operating conditions, the printing roller gear 1 serves as the power input source to drive the printing roller and the driven gear 31 to rotate coaxially and synchronously, and the synchronous belt 32 drives the driving gear 33 to rotate synchronously as well. Furthermore, when cleaning the printing roller is required, the printing roller and the printing roller gear 1 are pre-positioned in a separated state. At this time, the printing roller gear 1 has no external power input, and the adjustment drive unit 4 intervenes and acts on the driving gear 33 as the power source, thereby driving the printing roller to rotate during the cleaning process via the driving gear 33, the synchronous belt 32, and the driven gear 31.

[0022] Furthermore, after the printing roller gear 1 stops, the printing roller origin photoelectric sensor 5 first monitors and records the current angle and orientation of the drive gear 33 as the initial angle and orientation. Then, the printing roller gear 1 moves to switch to the disengaged state. This is so that when the printing roller gear 1 needs to be reset from the disengaged state to the engaged state, the drive gear 33 is pre-driven to rotate and reset to the initial orientation recorded by the printing roller origin photoelectric sensor 5 through the adjustment drive unit 4. This ensures that the drive gear 33 and the driven gear 31 can be reset and rotated to the origin position when they are disengaged. This ensures that there will be no misalignment when the printing roller gear 1 and the bottom roller gear 2 are engaged, effectively avoiding the problem of pattern misalignment and enabling normal printing production to be quickly restored.

[0023] 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 engages and disengages with the drive gear 33. The normally open pneumatic clutch 41 can be engaged and disengaged by pneumatic, hydraulic, or other means. Its structure and principle are well-known technologies and will not be elaborated here. Under normal operating conditions, the normally open pneumatic clutch 41 remains disengaged, so that the drive motor does not operate and there is no transmission between it and the drive gear 33. Conversely, when the printing roller is disengaged, the normally open pneumatic clutch 41 remains engaged, so that the drive motor engages and disengages with the drive gear 33. This ensures that there is no phase difference between the drive motor and the printing roller. At this time, the drive motor can drive the printing roller to perform the rotational action during the cleaning process and the rotational reset action based on the initial orientation recorded by the photoelectric sensor 5 at the origin of the printing roller.

[0024] In this embodiment, the synchronous belt 32 is equipped with a tension roller 7, that is, the synchronous belt 32 is partially wrapped around the roller surface of the tension roller 7, and the tension roller is used to adjust the tension of the synchronous belt 32.

[0025] In this embodiment, to further improve the accuracy of close engagement, a bottom roller origin photoelectric sensor 6 is also included for monitoring and recording the initial position of the bottom roller gear 2 in the disengaged state. This allows the bottom roller gear 2 to be detected in a timely manner if it is displaced during the cleaning process, based on the initial position of the bottom roller gear 2 pre-recorded by the bottom roller origin photoelectric sensor 6 when the printing roller 100 completes cleaning and reset. This enables the operator to reset the bottom roller gear 2 to its initial position in a timely manner.

[0026] In this embodiment, the gear separation and reset positioning device of the water-based ink printing equipment achieves precise alignment between the printing roller 100 and the printing base roller 200 through the synchronous meshing and separation of the printing roller gear 1 and the base roller gear 2. This ensures rapid and accurate reset after cleaning or maintenance of the printing roller, preventing pattern misalignment and improving the production efficiency and printing quality of the printing equipment. The monitoring and recording functions of the printing roller origin photoelectric sensor 5 and the base roller origin photoelectric sensor 6 ensure the accuracy of the gears during separation and reset, thereby guaranteeing the precision of printing registration. Furthermore, 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 effective coordination between the drive motor and the printing roller under different operating conditions, thereby achieving precise control of the cleaning and reset actions.

[0027] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or alterations made by those skilled in the art to the technical solution of this utility model without departing from its scope are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its scope should be covered within the protection scope of this utility model.

Claims

1. A positioning device for gear separation and resetting in a water-based ink printing equipment, comprising a plate roller gear (1) and a bottom roller gear (2) capable of meshing or separating, characterized in that: Also includes: Adjust the transmission assembly (3): used to achieve coaxial transmission with the printing roller gear (1); Adjusting the drive unit (4): used for clutch and transmission engagement with the transmission components; The adjustment transmission assembly (3) includes a driven gear (31) that is coaxially driven with the printing roller gear (1), a driving gear (33) that is disengaged and driven with the adjustment drive unit (4), and a printing roller origin photoelectric sensor (5) for monitoring and recording the initial position of the driving gear (33). The driven gear (31) is driven with the driving gear (33) to make the driven gear (31), the driving gear (33) and the printing roller gear (1) move synchronously. When the printing roller gear (1) needs to be reset from the disengaged state to the engaged state, the driving gear (33) is driven to rotate and reset to the initial position recorded by the printing roller origin photoelectric sensor (5) in advance by the adjustment drive unit (4).

2. The positioning device for gear separation and reset in a water-based ink printing equipment according to claim 1, characterized in that: It also includes a bottom roller origin photoelectric sensor (6): used to monitor and record the initial orientation of the bottom roller gear (2) in the separated state.

3. The positioning device for gear separation and reset in a water-based ink printing equipment according to claim 1, characterized in that: A synchronous belt (32) is circulated between the driven gear (31) and the driving gear (33).

4. The positioning device for gear separation and reset in a water-based ink printing equipment according to claim 3, characterized in that: The synchronous belt (32) is equipped with a tension roller (7).

5. The positioning device for gear separation and reset in a water-based ink printing equipment according to claim 1, characterized in that: 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) engages and disengages with the drive gear (33).

Images