Online overprinting adjusting device for printing roller
Through the design roll online overprinting adjustment device, the combination of axial and circumferential adjustment components is used to solve the problem of low overprinting accuracy in existing ink printing equipment, achieving higher accuracy and simpler operating procedures, and improving product quality.
Patent Information
- Application Number
- CN202510061036.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-02-28
AI Technical Summary
In the existing ink printing equipment, due to the error between the bottom roller and the plate roller, the overprinting accuracy is not high, and the adjustment device has a complex structure and high accuracy requirements, which makes it easy to cause squirming problems.
A roll-on-line overprint adjustment device is designed, including an axial adjustment assembly and a circumferential adjustment assembly. Through the combination of a coaxial fixing sleeve, a rotary sleeve, a driving unit and a thrust ball bearing, the roll-on is precisely fine-tuned in the axial and circumferential directions.
Improves overprinting accuracy, simplifies the operation process, ensures the clarity and consistency of the printing pattern, thereby improving product quality.
Smart Images
Figure CN119526882A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of daily paper printing equipment, in particular to an online overprint adjustment device for a plate roller. Background Art
[0002] The existing water-based ink printing equipment is generally composed of a bottom roller, a plate roller and other components. The printing plate roller performs roller coating printing on the paper web wound on the roller surface of the bottom roller. Due to the problem of processing and assembly accuracy, there is an error between the bottom roller and the plate roller. Therefore, the existing printing machine is equipped with an axial and circumferential pattern overprint adjustment device, such as Figure 1 The existing pattern overprint adjustment device shown in the figure adopts a circumferential adjustment disk with grooves and an axial adjustment disk. The output ends of the circumferential adjustment device and the axial adjustment device are equipped with bearings, and the bearings cooperate with the two sides of the groove of the adjustment disk. This structural method has the following problems: 1. The axial adjustment disk and the circumferential adjustment disk rotate at high speed with the plate roller. The adjustment disk has high precision requirements, and the runout requirements on both sides of the groove are high. The precision must be strictly controlled in any link of processing and assembly; 2. The axis of the circumferential adjustment device bearing and the radial adjustment device bearing must be perpendicular to the axis of the plate roller; 3. The two sides of the groove of the axial adjustment disk and the circumferential adjustment disk can only contact the bearing on one side, otherwise it will interfere and cause the bearing to burn. Therefore, the groove scale is generally 0.5~1mm wider than the outer diameter of the bearing. Therefore, the plate roller moves in both the axial and circumferential directions, and the overprinting accuracy cannot be guaranteed; 4. The two sides of the grooves of the axial adjustment disk and the circumferential adjustment disk have large runout with the axis of the plate roller, which will cause the adjustment disk to hit the bearings of the circumferential adjustment device and the radial adjustment device during rotation, causing movement. Summary of the invention
[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an online overprint adjustment device for a plate roller.
[0004] In order to achieve the above-mentioned purpose, the present invention provides an online overprint adjustment device for a plate roller, comprising a plate roller, an axial adjustment assembly and a circumferential adjustment assembly arranged at the end of the plate roller, wherein the axial adjustment assembly comprises an axial fixing sleeve coaxially fixedly mounted on the end of the plate roller, an axial adjustment disk coaxially rotatably mounted on the periphery of the axial fixing sleeve, and an axial driving unit acting on the axial adjustment disk, and the axial fixing sleeve and the plate shaft make synchronous axial movements corresponding to the axial adjustment disk under the drive of the axial driving unit; the circumferential adjustment assembly comprises a circumferential fixing sleeve coaxially mounted on the end of the plate shaft, a transmission bevel gear fixedly mounted on the circumferential fixing sleeve, a circumferential adjustment disk coaxially rotatably mounted on the periphery of the axial fixing sleeve, and a circumferential driving unit acting on the circumferential adjustment disk, and the axial fixing sleeve and the transmission bevel gear make synchronous axial movements corresponding to the circumferential adjustment disk under the drive of the circumferential driving unit.
[0005] Furthermore, thrust ball bearings are provided between the axial adjustment disk and the axial fixing sleeve, and between the circumferential adjustment disk and the axial fixing sleeve.
[0006] Furthermore, the axial drive unit and the circumferential drive unit both include an adjustment disk clamp for engaging with the axial adjustment disk or the circumferential adjustment disk and a drive unit for driving the adjustment disk clamp to move parallel to the axial direction of the plate roller.
[0007] Furthermore, a fixed end sleeve is coaxially provided at the end of the plate roller, and the fixed end sleeve is tightly connected to the axial fixed sleeve.
[0008] The present invention adopts the above scheme, and its beneficial effects are: 1) Improving the overprint accuracy: Through the precise control of the axial adjustment component and the circumferential adjustment component, the plate roller can be fine-tuned in the axial and circumferential directions, thereby improving the overprint accuracy during the printing process. 2) Simplifying the operation process: By adjusting the coordinated use of the plate card and the drive unit, the operation process of the plate roller adjustment is simplified, making the operation more intuitive and convenient. 3) Improving product quality: Through precise adjustment of the plate roller position, the clarity and consistency of the printed pattern can be ensured, thereby improving the quality of the final product. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of an existing pattern overprint adjustment device.
[0010] Figure 2 It is a schematic diagram of the online overprint adjustment device for the plate roller.
[0011] Figure 3 It is a cross-sectional view of the online overprint adjustment device for the plate roller.
[0012] Among them, 1-plate roller, 2-axial adjustment assembly, 3-circumferential adjustment assembly, 21-axial fixing sleeve, 22-axial adjustment disk, 23-axial drive unit, 231 / 341-adjustment disk card, 31-circumferential fixing sleeve, 32-transmission bevel gear, 33-circumferential adjustment disk, 34-circumferential drive unit, 20-thrust ball bearing, 4-printing bottom roller, 41-bottom roller gear, 5-fixed end sleeve. DETAILED DESCRIPTION
[0013] 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.
[0014] See attached Figure 2-3As shown, in this embodiment, an online overprint adjustment device for a plate roller is suitable for use in a household paper overprint printing device, comprising a plate roller 1 and a printing bottom roller 4 that are pressed against each other and rotate, and the plate roller 1 and the printing bottom roller 4 are matched through gear transmission, and the overprint adjustment device acts on the plate roller 1 to fine-tune its axial and circumferential directions. Specifically, it comprises a plate roller 1, an axial adjustment component 2 and a circumferential adjustment component 3 disposed at the end of the plate roller 1, the axial adjustment component 2 acts on the plate roller 1 to make axial adjustment to the plate roller 1, and the circumferential adjustment component 3 acts on the plate roller 1 to make circumferential adjustment to the plate roller 1.
[0015] In this embodiment, the axial adjustment component 2 includes an axial fixing sleeve 21 coaxially fixedly sleeved on the end of the plate shaft, an axial adjustment disk 22 coaxially rotatably sleeved on the periphery of the axial fixing sleeve 21, and an axial driving unit 23 acting on the axial adjustment disk 22, wherein the axial fixing sleeve 21 is fixedly sleeved on the plate shaft so that the two can maintain synchronous action (i.e., can perform synchronous axial movement and rotation movement), and the axial adjustment disk 22 does not rotate with the axial fixing sleeve 21 and the plate shaft and only moves axially under the drive of the axial driving unit 23, so that the axial fixing sleeve 21 and the plate shaft can perform synchronous axial movement corresponding to the axial adjustment disk 22 under the drive of the axial driving unit 23.
[0016] In this embodiment, the circumferential adjustment component 3 includes a circumferential fixed sleeve coaxially sleeved on the end of the plate shaft, a transmission bevel gear 32 fixedly sleeved on the circumferential fixed sleeve 31, a circumferential adjustment disk 33 coaxially rotatably sleeved on the periphery of the axial fixed sleeve 21, and a circumferential drive unit 34 acting on the circumferential adjustment disk 33, wherein the circumferential fixed sleeve is restrictedly sleeved on the plate shaft, that is, the circumferential fixed sleeve can move freely in the axial direction relative to the plate roller 1, but the circumferential fixed sleeve will rotate synchronously with the plate shaft. The transmission bevel gear 32 is fixedly sleeved on the circumferential fixed sleeve 31, that is, the transmission bevel gear 32 serves as an external power input source, and it maintains synchronous action with the circumferential fixed sleeve and the plate roller 1 (that is, it can rotate synchronously), and the transmission bevel gear 32 can move axially synchronously with the circumferential fixed sleeve; while the circumferential adjustment disk 33 does not rotate with the circumferential fixed sleeve and the plate roller 1, and only moves axially under the drive of the circumferential driving unit 34, so that the circumferential fixed sleeve, the plate roller 1 and the transmission bevel gear 32 make corresponding synchronous axial movements with the circumferential adjustment disk 33 under the trend of the circumferential driving unit 34.
[0017] Specifically, the end of the printing bottom roller 4 is sleeved with a bottom roller gear 41 which meshes with the transmission bevel gear 32 for transmission. Both the bottom roller gear 41 and the transmission bevel gear 32 have helical teeth. Therefore, when the transmission bevel gear 32 moves axially with the circumferential adjustment disk 33, the axial relative position of the transmission bevel gear 32 relative to the bottom roller gear 41 is changed, and the meshing position of the transmission bevel gear 32 and the bottom roller gear 41 is changed, thereby adjusting the relative angular position in the circumferential direction.
[0018] In this embodiment, thrust ball bearings 20 are provided between the axial adjustment disk 22 and the axial fixing sleeve 21, and between the circumferential adjustment disk 33 and the axial fixing sleeve 21. By utilizing the structural characteristics of the thrust ball bearing 20 for transmitting the axial load, the axial force applied to the axial adjustment disk 22 / circumferential adjustment disk 33 by the axial drive unit 23 / circumferential drive unit 34 is transmitted to the axial fixing sleeve 21 / circumferential fixing sleeve through the thrust ball bearing 20, thereby realizing axial movement. At the same time, the rotational movement of the axial adjustment disk 22 relative to the axial fixing sleeve 21 and the rotational movement of the circumferential adjustment disk 33 relative to the axial fixing sleeve 21 can be maintained.
[0019] In this embodiment, the axial drive unit 23 and the circumferential drive unit 34 both include an adjustment disk card 231 / 341 for engaging with the axial adjustment disk 22 or the circumferential adjustment disk 33 and a drive unit for driving the adjustment disk card 231 / 341 to move in parallel to the axial direction of the plate roller 1, wherein the end surface of the adjustment disk card 231 / 341 is formed with a clamping groove for the circumferential surface of the axial adjustment disk 22 / circumferential adjustment disk 33 to be embedded and engaged. Secondly, the drive unit adopts a worm gear drive box, whose structure and principle belong to common knowledge and will not be elaborated here. Its drive unit is connected to the adjustment disk card 231 / 341, and the operator can drive the adjustment disk card 231 / 341 to move in parallel to the axial direction of the plate roller 1 with the help of the drive unit, thereby correspondingly driving the axial adjustment disk 22 / circumferential adjustment disk 33 to move in the axial direction.
[0020] In summary, according to actual needs, the axial and circumferential fine adjustment of the plate roller 1 is achieved through the axial drive unit 23 and the circumferential drive unit 34 to ensure accurate alignment of the overprint. In addition, the axial adjustment disk 22 and the circumferential adjustment disk 33 can move axially independently of the plate shaft, and do not rotate with the plate shaft, which can effectively reduce the movement of the plate roller 1 and ensure the overprint accuracy.
[0021] In this embodiment, a fixed end sleeve 5 is coaxially provided at the end of the plate roller 1, and the fixed end sleeve 5 is tightly connected to the axial fixed sleeve 21 to achieve a fixing effect.
[0022] 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 device for adjusting the plate roller online, characterized in that: The invention comprises a plate roller (1), an axial adjustment assembly (2) and a circumferential adjustment assembly (3) arranged at the end of the plate roller (1), wherein the axial adjustment assembly (2) comprises an axial fixing sleeve (21) coaxially fixedly sleeved at the end of the plate roller (1), an axial adjustment disk (22) coaxially rotatably sleeved on the periphery of the axial fixing sleeve (21), and an axial driving unit (23) acting on the axial adjustment disk (22); the axial fixing sleeve (21) and the plate shaft are driven by the axial adjustment disk (22) to rotate in a direction opposite to the axial direction. The circumferential adjustment component (3) comprises a circumferential fixing sleeve coaxially sleeved on the end of the plate shaft, a transmission bevel gear (32) fixedly sleeved on the circumferential fixing sleeve (31), a circumferential adjustment disk (33) coaxially rotatably sleeved on the periphery of the axial fixing sleeve (21), and a circumferential driving unit (34) acting on the circumferential adjustment disk (33); the axial fixing sleeve (21) and the transmission bevel gear (32) are driven by the circumferential driving unit (34) to perform synchronous axial movement corresponding to the circumferential adjustment disk (33).
2. The device for adjusting the plate roller (1) online according to claim 1, characterized in that: A thrust ball bearing (20) is provided between the axial adjustment disc (22) and the axial fixing sleeve (21), and between the circumferential adjustment disc (33) and the axial fixing sleeve (21).
3. The device for adjusting the plate roller (1) online according to claim 1, characterized in that: The axial drive unit (23) and the circumferential drive unit (34) both comprise an adjustment disc clamp (231 / 341) for engaging with the axial adjustment disc (22) or the circumferential adjustment disc (33), and a drive unit for driving the adjustment disc clamp (231 / 341) to move in an axial direction parallel to the plate roller (1).
4. The device for adjusting the plate roller (1) online according to claim 1, characterized in that: The end of the plate roller (1) is coaxially provided with a fixed end sleeve (5), and the fixed end sleeve (5) is tightly connected to the axial fixed sleeve (21).