Online overprinting adjusting device for printing roller
By introducing axial and circumferential adjustment components into the printing press, the problem of insufficient registration accuracy was solved, enabling precise fine-tuning of the printing roller and improving printing quality and ease of operation.
Patent Information
- Application Number
- CN202520089525.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Existing printing presses suffer from insufficient registration accuracy in both axial and circumferential directions, leading to pattern deviations. Furthermore, the adjustment disc and bearings are prone to interference and burnout, making it impossible to guarantee registration accuracy.
The system employs axial and circumferential adjustment components, including an axial fixing sleeve, an axial adjusting disc, a circumferential adjusting disc, a thrust ball bearing, and a drive unit. By precisely controlling the axial and circumferential movement of the printing roller, fine adjustments are achieved to ensure printing accuracy.
It improves the accuracy of registration, simplifies the operation process, and enhances the clarity of printed patterns and product quality.
Smart Images
Figure CN223877693U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of life paper printing equipment, and especially to a plate roller online overprint adjusting device. BACKGROUND
[0002] The existing ink printing equipment is generally composed of a bottom roller, a plate roller and the like, wherein the printing plate roller performs roller coating printing on a paper web wound on the bottom roller surface, and due to the machining and assembly precision, there is an error between the bottom roller and the plate roller, so the existing printing machine is equipped with an axial and circumferential pattern overprint adjusting device, such as the existing pattern overprint adjusting device shown in the figure. Figure 1 The existing pattern overprint adjusting device adopts a circumferential adjusting disc with a groove and an axial adjusting disc, the output ends of the circumferential adjusting device and the axial adjusting device are provided with bearings, and the bearings are matched with the two side surfaces of the groove of the adjusting disc. This structure has the following problems:
[0003] 1. The axial adjusting disc and the circumferential adjusting disc rotate at a high speed along with the plate roller, the adjusting disc requires high precision, the two side surfaces of the groove require high runout, and the precision of any link of machining and assembly must be strictly controlled;
[0004] 2. The axes of the bearings of the circumferential adjusting device and the radial adjusting device must be perpendicular to the axis of the plate roller;
[0005] 3. The two side surfaces of the groove of the axial adjusting disc and the circumferential adjusting disc can only contact the bearings on one side, otherwise the bearings will be burned out due to interference, so the groove scale is generally 0.5-1mm wider than the outer diameter of the bearing, so the plate roller exists in the axial and circumferential directions. There is a shift, and the overprint precision cannot be guaranteed;
[0006] 4. The two side surfaces of the groove of the axial adjusting disc and the circumferential adjusting disc and the axis of the plate roller have large runout, which will cause the adjusting disc to hit the bearings of the circumferential adjusting device and the radial adjusting device during rotation, and the bearings will shift. UTILITY MODEL CONTENTS
[0007] The utility model aims at overcoming the defects of the prior art and provides a plate roller online overprint adjusting device.
[0008] In order to achieve the above-mentioned purpose, the utility model provides a kind of plate roller online overprint adjustment device, including plate roller, axial adjustment component and circumferential adjustment component being located at the end of plate roller, wherein, the axial adjustment component includes the axial fixed sleeve of coaxially fixedly sleeved in the end of plate roller, the axial adjusting disc of coaxially rotatably sleeved in the periphery of axial fixed sleeve and the axial driving unit acting on axial adjusting disc, the axial fixed sleeve and plate shaft are made synchronous axial movement with axial adjusting disc under the drive of axial driving unit;The circumferential adjustment component includes the circumferential fixed sleeve of coaxially sleeved in the end of plate shaft, the transmission helical gear of fixedly sleeved on circumferential fixed sleeve, the circumferential adjusting disc of coaxially rotatably sleeved in the periphery of axial fixed sleeve and the circumferential driving unit acting on circumferential adjusting disc, the axial fixed sleeve and transmission helical gear are made synchronous axial movement with circumferential adjusting disc under the drive of circumferential driving unit.
[0009] Further, the axial adjusting disc and the axial fixed sleeve, the circumferential adjusting disc and the axial fixed sleeve are provided with thrust ball bearings.
[0010] Further, the axial driving unit and the circumferential driving unit each include an adjusting disc card for engaging with the axial adjusting disc or the circumferential adjusting disc, and a driving unit for driving the adjusting disc card to move along the axial direction of the plate roller.
[0011] Further, the end of the plate roller is coaxially sleeved with a fixed end sleeve, and the fixed end sleeve is tightly connected with the axial fixed sleeve.
[0012] The utility model has the advantages that: 1) improves overprint precision: through the accurate control of the axial adjustment component and the circumferential adjustment component, the fine adjustment of the plate roller in the axial and circumferential directions is realized, thereby improving the overprint precision in the printing process. 2) simplifies the operation process: through the cooperation of the adjusting disc card and the driving unit, the operation process of the plate roller adjustment is simplified, making the operation more intuitive and convenient. 3) improves product quality: through the accurate position adjustment of the plate roller, the clarity and consistency of the printed pattern are ensured, thereby improving the quality of the final product. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a schematic view of the existing pattern overprint adjustment device.
[0014] Figure 2 It is a schematic view of the plate roller online overprint adjustment device.
[0015] Figure 3 It is a sectional view of the plate roller online overprint adjustment device.
[0016] Wherein, 1 - plate roller, 2 - axial adjustment assembly, 3 - circumferential adjustment assembly, 21 - axial fixed sleeve, 22 - axial adjusting disc, 23 - axial drive unit, 231 - adjusting disc card, 31 - circumferential fixed sleeve, 32 - transmission bevel gear, 33 - circumferential adjusting disc, 34 - circumferential drive unit, 20 - thrust ball bearing, 4 - printing bottom roller, 41 - bottom roller gear, 5 - fixed end sleeve. DETAILED DESCRIPTION
[0017] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application 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 application more thorough and comprehensive.
[0018] Referring to the accompanying drawings Figures 2-3 As shown in the drawings, in the present embodiment, a plate roller online inking adjustment device is suitable for inking printing equipment for household paper, which comprises a plate roller 1 and a printing bottom roller 4 that are in close contact and rotate in opposite directions, and the plate roller 1 and the printing bottom roller 4 are connected through gear transmission. The inking 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 assembly 2 and a circumferential adjustment assembly 3 arranged at the end of the plate roller 1. The axial adjustment assembly 2 acts on the plate roller 1 to adjust its axial direction, and the circumferential adjustment assembly 3 acts on the plate roller 1 to adjust its circumferential direction.
[0019] In the present embodiment, the axial adjustment assembly 2 comprises an axial fixed sleeve 21 coaxially fixed to the end of the plate shaft, an axial adjusting disc 22 coaxially rotatably arranged on the periphery of the axial fixed sleeve 21, and an axial drive unit 23 acting on the axial adjusting disc 22. The axial fixed sleeve 21 is fixed to the plate shaft, so that they move synchronously (i.e. can move synchronously in axial direction and rotate). The axial adjusting disc 22 does not rotate with the axial fixed sleeve 21 and the plate shaft, but only moves axially under the drive of the axial drive unit 23. Therefore, the axial fixed sleeve 21 and the plate shaft move synchronously in axial direction under the drive of the axial adjusting disc 22 and the axial drive unit 23.
[0020] In the present embodiment, the circumferential adjustment assembly 3 comprises a circumferential fixing sleeve coaxially sleeved on the end portion of the plate shaft, a transmission bevel gear 32 fixedly sleeved on the circumferential fixing sleeve 31, a circumferential adjusting disc 33 coaxially and rotatably sleeved on the outer periphery of the axial fixing sleeve 21, and a circumferential driving unit 34 acting on the circumferential adjusting disc 33, wherein the circumferential fixing sleeve is limitedly sleeved on the plate shaft, i.e., the circumferential fixing sleeve is freely movable in the axial direction relative to the plate roller 1, but the circumferential fixing sleeve synchronously rotates with the plate shaft. The transmission bevel gear 32 is fixedly sleeved on the circumferential fixing sleeve 31, i.e., the transmission bevel gear 32 is an external power input source, which synchronously moves (i.e., synchronously rotates) with the circumferential fixing sleeve and the plate roller 1, and the transmission bevel gear 32 is synchronously movable in the axial direction with the circumferential fixing sleeve. The circumferential adjusting disc 33 is axially movable under the driving of the circumferential driving unit 34 without rotating with the circumferential fixing sleeve and the plate roller 1, so that the circumferential fixing sleeve, the plate roller 1 and the transmission bevel gear 32 correspondingly synchronously move in the axial direction under the trend of the circumferential adjusting disc 33 of the circumferential driving unit 34.
[0021] Specifically, the end portion of the printing bottom roller 4 is sleeved with a bottom roller gear 41 engaged with the transmission bevel gear 32 for transmission. The bottom roller gear 41 and the transmission bevel gear 32 both have inclined teeth, so that when the transmission bevel gear 32 moves in the axial direction with the circumferential adjusting disc 33, the axial relative position between the transmission bevel gear 32 and the bottom roller gear 41 is changed, the engagement position of the transmission bevel gear 32 and the bottom roller gear 41 is changed, and the relative angular position in the circumferential direction is adjusted.
[0022] In the present embodiment, a thrust ball bearing 20 is arranged between the axial adjusting disc 22 and the axial fixing sleeve 21 and between the circumferential adjusting disc 33 and the axial fixing sleeve 21. By using the structural characteristic of the thrust ball bearing 20 for transmitting axial load, the axial force applied by the axial driving unit 23 / circumferential driving unit 34 to the axial adjusting disc 22 / circumferential adjusting disc 33 is transmitted to the axial fixing sleeve 21 / circumferential fixing sleeve through the thrust ball bearing 20, so that the axial movement is realized, and at the same time, the rotational movement between the axial adjusting disc 22 and the axial fixing sleeve 21 and the rotational movement between the circumferential adjusting disc 33 and the axial fixing sleeve 21 can be maintained.
[0023] In the embodiment, the axial driving unit 23 and the circumferential driving unit 34 each comprise an adjusting disc card 231 for clamping with the axial adjusting disc 22 or the circumferential adjusting disc 33, and a driving unit for driving the adjusting disc card 231 to move along the axial direction of the plate roller 1, wherein the end surface of the adjusting disc card 231 is formed with a clamping groove for clamping with the peripheral surface of the axial adjusting disc 22 / circumferential adjusting disc 33. Secondly, the driving unit adopts a worm gear driving box, the structure and principle of which are known to the public, and thus will not be described here. The driving unit is connected with the adjusting disc card 231, and an operator can drive the adjusting disc card 231 to move along the axial direction of the plate roller 1 by means of the driving unit, thereby driving the axial adjusting disc 22 / circumferential adjusting disc 33 to move axially.
[0024] In summary, according to the actual requirements, the axial and circumferential fine adjustment of the plate roller 1 is realized by the axial driving unit 23 and the circumferential driving unit 34, so as to ensure the accurate alignment of the overprint. In addition, the axial adjusting disc 22 and the circumferential adjusting disc 33 can move axially independently of the plate shaft, and do not rotate with the plate shaft, so as to effectively reduce the movement of the plate roller 1 and ensure the overprint accuracy.
[0025] In the embodiment, the end portion of the plate roller 1 is coaxially sleeved with a fixed end sleeve 5, and the fixed end sleeve 5 is fixedly connected with the axial fixing sleeve 21, so as to play a fixed effect.
[0026] The above-described embodiments are only preferred embodiments of the present application, and do not limit the present application in any form. Any skilled person in the art can make more possible changes, decorations or modifications to the technical scheme of the present application by using the disclosed technical contents without departing from the scope of the technical scheme of the present application. Therefore, any equivalent changes and modifications made according to the idea of the present application without departing from the content of the technical scheme of the present application shall be covered within the protection scope of the present application.
Claims
1. An on-press registration adjustment device for a plate cylinder, characterized by: The plate roller (1), the axial adjustment assembly (2) and the circumferential adjustment assembly (3) are arranged at the end of the plate roller (1), wherein the axial adjustment assembly (2) comprises an axial fixed sleeve (21) coaxially sleeved at the end of the plate roller (1), an axial adjusting disc (22) coaxially rotatably sleeved at the periphery of the axial fixed sleeve (21), and an axial driving unit (23) acting on the axial adjusting disc (22), the axial fixed sleeve (21) and the plate shaft are synchronously axially moved corresponding to the axial adjusting disc (22) driven by the axial driving unit (23); the circumferential adjustment assembly (3) comprises a circumferential fixed sleeve coaxially sleeved at the end of the plate shaft, a transmission helical gear (32) fixedly sleeved on the circumferential fixed sleeve (31), a circumferential adjusting disc (33) coaxially rotatably sleeved at the periphery of the axial fixed sleeve (21), and a circumferential driving unit (34) acting on the circumferential adjusting disc (33), the axial fixed sleeve (21) and the transmission helical gear (32) are synchronously axially moved corresponding to the circumferential adjusting disc (33) driven by the circumferential driving unit (34).
2. An on-press registration adjustment device for a printing plate cylinder (1) according to claim 1, characterized in that: The axial adjusting disc (22) and the axial fixed sleeve (21), and the circumferential adjusting disc (33) and the axial fixed sleeve (21) are provided with thrust ball bearings (20).
3. An on-press registration adjustment device for a printing plate cylinder (1) according to claim 1, characterized in that: The axial driving unit (23) and the circumferential driving unit (34) each comprise an adjusting disc card (231) for clamping connection with the axial adjusting disc (22) or the circumferential adjusting disc (33), and a driving unit for driving the adjusting disc card (231) to move along the axial direction of the plate roller (1).
4. An on-press registration adjustment device for a printing plate cylinder (1) according to claim 1, characterized in that: The end of the plate roller (1) is coaxially sleeved with a fixed end sleeve (5), and the fixed end sleeve (5) is tightly connected with the axial fixed sleeve (21).