Cylinder pressure regulating mechanism for a rotary printing press
By introducing a pressure-adjusting component and a maintenance component into a rotary printing press, the problem of inaccurate roller pressure adjustment was solved, enabling precise control and lubrication of roller pressure, thereby improving printing quality and equipment stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DINGZHOU XINHUA PRINTING CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-24
AI Technical Summary
The existing rotary printing press's roller pressure adjustment mechanism cannot be precisely adjusted, leading to defects such as blurring and breakage during the printing process.
By employing a downward-pressure adjustment and maintenance component, and through the cooperation of components such as racks, motors, and diagonal rods, the roller pressure is precisely adjusted and lubricated, ensuring consistent printing quality and equipment stability.
It enables precise adjustment of roller pressure, avoids blurring and breakage during printing, improves printing effect and image clarity, and reduces equipment failure rate and human operation error.
Smart Images
Figure CN224545529U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of printing press technology, specifically to a roller pressure adjustment mechanism for a rotary printing press. Background Technology
[0002] In rotary printing presses, the cylinder pressure regulating mechanism is a crucial component for ensuring print quality and accuracy. This mechanism adjusts the printing pressure by controlling the pressure between the cylinders.
[0003] According to a public disclosure (Publication No.: CN119898109 A) of a pressure adjustment mechanism and method for a rubber roller of a rotary printing press, key components include a cylinder, a transmission operation clutch pressure shaft, a backrest, a positioning rod, a digital handwheel, a crank rod, an eccentric swing rod, an eccentric sleeve, and a rubber roller. Power is provided by the cylinder and the transmission operation clutch pressure shaft to achieve pressure engagement and disengagement operations; the linkage between the positioning rod and the digital handwheel precisely controls the rubber roller spacing, achieving dynamic pressure adjustment; the synergistic effect of the crank rod and the eccentric sleeve ensures smooth roller movement and reduces mechanical impact.
[0004] The aforementioned method, which relies on the coordination between components such as cylinders, transmission operation clutches, and pressure shafts, makes it difficult to precisely adjust the roller pressure, leading to defects such as blurring and breakage during the printing process, which needs to be improved. Utility Model Content
[0005] To overcome the above-mentioned defects, this utility model provides a roller pressure adjustment mechanism for a rotary printing press, which solves the technical problem that the roller pressure adjustment mechanism of the existing rotary printing press cannot accurately adjust the roller pressure.
[0006] According to one aspect, at least one embodiment of the present invention provides a roller pressure adjustment mechanism for a rotary printing press, including a base, a printing press disposed on the side of the base, a downward pressure adjustment component disposed on the side of the printing press, the downward pressure adjustment component including a housing, the side of the housing being fixedly connected to the side of the printing press, a motor being fixedly connected to the inner wall of the housing, a rack being slidably connected to the inner wall of the housing, a gear being fixedly connected to the output shaft of the motor, a pressing rod being fixedly connected to the side of the rack, a slot being provided on the side of the housing, a support plate being fixedly connected to the side of the housing, a turntable being rotatably connected to the inner wall of the support plate, an inclined rod being fixedly connected to the circumference of the turntable, a downward pressure plate being fixedly connected to the circumference of the turntable, a transmission plate being disposed on the side of the printing press, a printing device being disposed on the side of the base, and a control unit being disposed on the side of the printing device.
[0007] For example, in at least one embodiment of the present invention, a roller pressure adjustment mechanism for a rotary printing machine further includes: the gear and rack meshing with each other, a switch being provided on the surface of the motor, and the inclined rod being located on the displacement trajectory of the extrusion rod. This design is beneficial for driving the rack to move during gear transmission.
[0008] For example, in at least one embodiment of the present invention, a roller pressure adjustment mechanism for a rotary printing press further includes: the lower pressure plate is located at the top of the printing press, and there are two lower pressure plates, which are symmetrical to each other along the vertical central axis of the printing press. The design of having two lower pressure plates is beneficial for adjusting the pressure of the rollers on the printing press.
[0009] For example, in at least one embodiment of the present invention, a roller pressure adjustment mechanism for a rotary printing machine further includes: an L-shaped rod fixedly connected to the side of the support plate, a spring fixedly connected to the bottom of the L-shaped rod, and the end of the spring away from the L-shaped rod fixedly connected to the top of the inclined rod. The design of the spring facilitates that the inclined rod can automatically reset when it is not compressed.
[0010] For example, in at least one embodiment of the present invention, a roller pressure adjustment mechanism for a rotary printing press further includes: a plurality of control units, and two housings, racks, and motors, which are symmetrically arranged along the vertical central axis of the printing press. The arrangement of two units facilitates simultaneous downward pressure from both sides, thereby improving adjustment efficiency.
[0011] According to another aspect, at least one embodiment of the present invention also provides a roller pressure adjustment mechanism for a rotary printing press, including a maintenance component. The maintenance component includes a control box, the side of which is fixedly connected to the side of the printing press. A slide plate is slidably connected to the inner wall of the control box, and a fixing plate is fixedly connected to the inner wall of the control box. A push rod is fixedly connected to the side of the slide plate, with one end of the push rod away from the slide plate extending through the side of the control box. An oil outlet pipe extends through the side of the control box. A horizontal plate is fixedly connected to the side of the printing press, and an oil storage tank is fixedly connected to the top of the horizontal plate. A drain pipe extends through the top of the oil storage tank, with one end of the drain pipe away from the oil storage tank extending through the bottom of the control box. Oil is discharged through the oil outlet pipe to lubricate and maintain the rollers on the printing press, reducing jamming.
[0012] For example, in at least one embodiment of the present invention, a roller pressure adjustment mechanism for a rotary printing press further includes: two fixed plates are provided and are symmetrical to each other along the vertical central axis of the slide plate; the end of the oil outlet pipe away from the control box is located at the top of the printing press. This design is beneficial to allow the outflowing lubricating oil to flow directly onto the roller on the inner wall of the printing press.
[0013] For example, in at least one embodiment of the present invention, a roller pressure adjustment mechanism for a rotary printing machine further includes: a second spring fixedly connected to the side of the slide plate, and the end of the second spring away from the slide plate fixedly connected to the inner wall of the control box. The design of the second spring is beneficial to the automatic reset of the slide plate when it is not squeezed.
[0014] For example, in at least one embodiment of the present invention, a roller pressure adjustment mechanism for a rotary printing machine further includes: a limiting rod fixedly connected to the inner wall of the control box, the end of the limiting rod away from the control box passing through the side of the slide plate, and the design of the limiting rod is beneficial to restricting the movement trajectory of the slide plate.
[0015] For example, in at least one embodiment of the present invention, a roller pressure regulating mechanism for a rotary printing machine further includes: a one-way valve is provided on the outer wall of the unblocking pipe, a replenishment pipe passes through the top of the oil storage tank, and the oil storage tank is located at the bottom of the control box. The design of the one-way valve is beneficial for controlling the oil output of the unblocking pipe.
[0016] The beneficial effects of the embodiments of this utility model are as follows: This invention utilizes the interplay between components such as the housing, rack, and motor within the pressure-adjusting assembly to precisely adjust the position of the pressure plate, thereby controlling the pressure applied to the roller. This is crucial for different printing materials and processes, ensuring consistent printing quality. By precisely adjusting the roller pressure, the contact pressure can be adjusted according to printing needs, preventing blurring, breakage, and other defects during printing, thus improving printing quality and image clarity. The motor drive system automates the adjustment process, reducing manual operation errors and labor intensity. The operator only needs to set the appropriate pressure, and the system will automatically adjust, improving work efficiency and printing stability.
[0017] In this invention, the coordinated operation of components such as the control box, slide plate, fixing plate, and oil outlet pipe within the maintenance assembly enables precise lubrication of the rollers, effectively reducing friction and wear. This results in smoother operation of the printing press, lower equipment failure rates, and controlled lubrication. The controlled flow of lubricating oil means that lubrication can be timely and evenly distributed to the required areas, ensuring sufficient lubrication protection for the rollers during high-speed operation. The flow of lubricating oil also helps reduce roller jamming, especially during long-term operation or high-load operation, where the lubricating oil effectively alleviates jamming or roller damage caused by excessive friction. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.
[0019] Figure 1 This is a three-dimensional appearance structure diagram of one embodiment of the present invention; Figure 2 This is a three-dimensional side view of the control unit in one embodiment of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the outer shell in one embodiment of the present invention; Figure 4 As one embodiment of this utility model Figure 1 A three-dimensional magnified structural diagram of A in the middle; Figure 5 This is a three-dimensional cross-sectional view of the control box in one embodiment of the present invention.
[0020] In the diagram: 1. Base; 2. Printing machine; 3. Downward adjustment assembly; 31. Housing; 32. Rack; 33. Motor; 34. Switch; 35. Gear; 36. Extrusion rod; 37. Support plate; 38. Turntable; 39. Diagonal bar; 310. Downward pressure plate; 311. L-shaped rod; 312. Spring 1; 313. Printing unit; 314. Control unit; 315. Transmission plate; 4. Maintenance assembly; 41. Control box; 42. Slide plate; 43. Fixing plate; 44. Push rod; 45. Oil outlet pipe; 46. Limit rod; 47. Unblocking pipe; 48. One-way valve; 49. Horizontal plate; 410. Oil storage tank; 411. Replenishment pipe; 412. Spring 2. Detailed Implementation
[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.
[0022] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0025] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0027] like Figures 1-5 As shown, this invention illustrates a roller pressure adjustment mechanism for a rotary printing press according to an embodiment of the present invention. The mechanism includes a base 1, a printing press 2 mounted on the side of the base 1, and a downward pressure adjustment component 3 mounted on the side of the printing press 2. The downward pressure adjustment component 3 includes a housing 31, the side of which is fixedly connected to the side of the printing press 2. A motor 33 is fixedly connected to the inner wall of the housing 31, and a rack 32 is slidably connected to the inner wall of the housing 31. A gear 35 is fixedly connected to the output shaft of the motor 33. A pressing rod 36 is fixedly connected to the side of the rack 32. A slot is provided on the side of the housing 31, and a support plate 37 is fixedly connected to the side of the housing 31. A turntable 38 is rotatably connected to the inner wall of the support plate 37. A diagonal rod 39 is fixedly connected to the circumference of the turntable 38, and a downward pressure plate 310 is fixedly connected to the circumference of the turntable 38. A transmission plate 315 is mounted on the side of the printing press 2, a printer 313 is mounted on the side of the base 1, and a control unit 314 is mounted on the side of the printer 313.
[0028] In some examples, gear 35 and rack 32 mesh with each other, a switch 34 is provided on the surface of motor 33, and slant bar 39 is located on the displacement trajectory of extrusion bar 36. This design is beneficial for driving rack 32 to move when gear 35 is in operation.
[0029] In some examples, the pressure plate 310 is located on top of the printing press 2. There are two pressure plates 310, which are symmetrical to each other along the vertical central axis of the printing press 2. The design of having two pressure plates 310 is beneficial for adjusting the pressure of the rollers on the printing press 2.
[0030] In some examples, an L-shaped rod 311 is fixedly connected to the side of the support plate 37, and a spring 312 is fixedly connected to the bottom of the L-shaped rod 311. The end of the spring 312 away from the L-shaped rod 311 is fixedly connected to the top of the diagonal rod 39. The design of the spring 312 is conducive to the automatic reset of the diagonal rod 39 when it is not compressed.
[0031] In some examples, there are several controllers 314, and two housings 31, racks 32, and motors 33 are provided. They are symmetrical to each other along the vertical central axis of the printing press 2. Having two controllers is beneficial for pressing down from both sides at the same time, which improves the adjustment efficiency.
[0032] For example, such as Figures 1-5As shown, the printing press 2 has several rollers inside for printing. The rollers are pressed down by the pressure-adjusting assembly 3. Starting the motor 33 causes the gear 35 to rotate. The gear 35 meshes with the rack 32. When the motor 33 rotates forward, it moves the rack 32 downward, which in turn moves the pressure rod 36 downward. The inclined rod 39 is located on the trajectory of the pressure rod 36. When the pressure rod 36 moves downward, it presses the inclined rod 39 downward. This downward pressure causes the turntable 38 and the lower pressure plate 310 to move downward. The turntable 38 moves along the support plate 37, causing the lower pressure plate 310 to move downward. The lower pressure plate 310 is located at the top of the printing press 2 and the rollers. When the lower pressure plate 310 moves downward, it presses against the rollers, applying pressure to them. The pressure control system, driven by motor 33, gear 35, and rack 32, allows for precise control of the roller pressure. Through the coordination of the downward-pressing adjustment component 3, rack 32, and gear 35, the position of the lower pressure plate 310 can be precisely adjusted, thereby controlling the pressure applied to the roller. This is crucial for different printing materials and process requirements, ensuring consistent printing quality. Precise roller pressure adjustment allows for adjustment of contact pressure according to printing needs, preventing blurring, breakage, and other defects during printing, thus improving printing quality and image clarity. The motor 33 drive system automates the adjustment process, reducing manual operation errors and labor intensity. The operator only needs to set the appropriate pressure, and the system will automatically adjust, improving work efficiency and printing stability.
[0033] like Figures 1-5 As shown, this invention illustrates a roller pressure adjustment mechanism for a rotary printing press according to another embodiment of the present invention, comprising: a maintenance component 4, which includes a control box 41. The side of the control box 41 is fixedly connected to the side of the printing press 2. A slide plate 42 is slidably connected to the inner wall of the control box 41. A fixing plate 43 is fixedly connected to the inner wall of the control box 41. A push rod 44 is fixedly connected to the side of the slide plate 42. One end of the push rod 44 away from the slide plate 42 passes through the side of the control box 41. An oil outlet pipe 45 passes through the side of the control box 41. A horizontal plate 49 is fixedly connected to the side of the printing press 2. An oil storage tank 410 is fixedly connected to the top of the horizontal plate 49. A drain pipe 47 passes through the top of the oil storage tank 410. One end of the drain pipe 47 away from the oil storage tank 410 passes through the bottom of the control box 41. Oil is discharged through the oil outlet pipe 45 to lubricate and maintain the rollers on the printing press 2, reducing jamming. In some examples, there are two fixed plates 43, which are symmetrical to each other along the vertical central axis of the slide plate 42. The end of the oil outlet pipe 45 away from the control box 41 is located at the top of the printing press 2. This design allows the outflowing lubricating oil to flow directly onto the rollers on the inner wall of the printing press 2.
[0034] In some examples, a second spring 412 is fixedly connected to the side of the slide plate 42. The end of the second spring 412 away from the slide plate 42 is fixedly connected to the inner wall of the control box 41. The design of the second spring 412 is conducive to the automatic reset of the slide plate 42 when it is not squeezed.
[0035] In some examples, a limit rod 46 is fixedly connected to the inner wall of the control box 41. The end of the limit rod 46 away from the control box 41 extends through the side of the slide plate 42. The design of the limit rod 46 is beneficial to restricting the movement trajectory of the slide plate 42.
[0036] In some examples, a one-way valve 48 is provided on the outer wall of the drain pipe 47, and a replenishment pipe 411 passes through the top of the oil storage tank 410. The oil storage tank 410 is located at the bottom of the control box 41. The design of the one-way valve 48 is conducive to controlling the oil output of the drain pipe 47.
[0037] For example, such as Figures 1-5As shown, the oil storage tank 410 stores lubricating oil. Opening the one-way valve 48 allows the lubricating oil to flow out from the drain pipe 47. The end of the drain pipe 47 furthest from the oil storage tank 410 extends into the control box 41, allowing lubricating oil to flow into the control box 41. The control box 41 is divided into two sections by a slide plate 42 and two fixed plates 43 forming a baffle. The lubricating oil flowing into the control box 41 through the drain pipe 47 is located on the right side of the baffle, while the oil outlet pipe 45 is located on the left side. Therefore, initially, the lubricating oil cannot flow out. When lubrication and maintenance of the rollers inside the printing press 2 are required, the push rod 44 is pushed into the control box 41. Pushing the push rod 44 moves the slide plate 42, pushing it away from the two fixed plates 43, creating a gap in the middle of the two fixed plates 43. This allows the lubricating oil on the right side to flow to the left side, and the lubricating oil flowing to the left side can then flow out through the oil outlet pipe 45. The end of the oil outlet pipe 45 away from the control box 41 is located at the top of the printing press 2, so the lubricating oil flowing out can flow directly onto the printing press 2 to maintain the rollers and reduce jamming. Through precise lubrication of the rollers, friction and wear can be effectively reduced, making the printing press 2 run more smoothly and reducing the equipment failure rate. The flow of lubricating oil is controlled, which means that lubrication can cover the required parts in a timely and even manner, ensuring that the rollers receive sufficient lubrication protection when running at high speed. The flow of lubricating oil helps to reduce roller jamming, especially during long-term work or high-load operation. Lubricating oil can effectively alleviate jamming or roller damage caused by excessive friction. By precisely controlling the oil flow, it is ensured that the lubricating oil can accurately reach the lubrication point when needed. Through the design of the slide plate 42 and push rod 44 in the control box 41, the operator can control the flow of lubricating oil with simple operation, making the lubrication process simpler and easier, and reducing the complexity of traditional lubrication methods.
[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A cylinder pressure adjusting mechanism for a rotary printing press, characterized in that, Includes a base (1), a printing press (2) is provided on the side of the base (1), and a pressure adjustment component (3) is provided on the side of the printing press (2). The downward adjustment assembly (3) includes a housing (31), the side of which is fixedly connected to the side of the printing press (2). A motor (33) is fixedly connected to the inner wall of the housing (31), and a rack (32) is slidably connected to the inner wall of the housing (31). A gear (35) is fixedly connected to the output shaft of the motor (33). An extrusion rod (36) is fixedly connected to the side of the rack (32). A slot is provided on the side of the housing (31). A support plate (37) is fixedly connected to the side of (31), a turntable (38) is rotatably connected to the inner wall of the support plate (37), a diagonal rod (39) is fixedly connected to the circumference of the turntable (38), a lower pressure plate (310) is fixedly connected to the circumference of the turntable (38), a transmission plate (315) is provided on the side of the printing machine (2), a printer (313) is provided on the side of the base (1), and a control machine (314) is provided on the side of the printer (313).
2. The roller pressure adjusting mechanism of a rotary printing press according to claim 1, characterized in that, The gear (35) and rack (32) mesh with each other, the surface of the motor (33) is provided with a switch (34), and the inclined rod (39) is located on the displacement trajectory of the extrusion rod (36).
3. The roller pressure adjusting mechanism of a rotary printing press according to claim 2, characterized in that, The lower pressure plate (310) is located at the top of the printing press (2). There are two lower pressure plates (310), which are symmetrical to each other along the vertical central axis of the printing press (2).
4. The roller pressure adjusting mechanism of a rotary printing press according to claim 3, characterized in that, An L-shaped rod (311) is fixedly connected to the side of the support plate (37), and a spring (312) is fixedly connected to the bottom of the L-shaped rod (311). The end of the spring (312) away from the L-shaped rod (311) is fixedly connected to the top of the diagonal rod (39).
5. The roller pressure adjusting mechanism of a rotary printing press according to claim 4, characterized in that, The controller (314) is provided in several parts, and the housing (31), rack (32), and motor (33) are provided in two parts, and are symmetrical to each other along the vertical central axis of the printing machine (2).
6. The roller pressure adjusting mechanism of a rotary printing press according to claim 5, characterized in that, The side of the printing press (2) is provided with a maintenance component (4), which includes a control box (41). The side of the control box (41) is fixedly connected to the side of the printing press (2). A slide plate (42) is slidably connected to the inner wall of the control box (41). A fixing plate (43) is fixedly connected to the inner wall of the control box (41). A push rod (44) is fixedly connected to the side of the slide plate (42). The end of the push rod (44) away from the slide plate (42) passes through the side of the control box (41). An oil outlet pipe (45) passes through the side of the control box (41). A horizontal plate (49) is fixedly connected to the side of the printing press (2). An oil storage tank (410) is fixedly connected to the top of the horizontal plate (49). A drain pipe (47) passes through the top of the oil storage tank (410). The end of the drain pipe (47) away from the oil storage tank (410) passes through the bottom of the control box (41).
7. The roller pressure adjusting mechanism of a rotary printing press according to claim 6, characterized in that, Two fixing plates (43) are provided and are symmetrical to each other along the vertical central axis of the slide plate (42). The end of the oil outlet pipe (45) away from the control box (41) is located at the top of the printing machine (2).
8. The roller pressure adjusting mechanism of a rotary printing press according to claim 7, characterized in that, A second spring (412) is fixedly connected to the side of the slide plate (42), and the end of the second spring (412) away from the slide plate (42) is fixedly connected to the inner wall of the control box (41).
9. The roller pressure adjusting mechanism of a rotary printing press according to claim 8, characterized in that, A limiting rod (46) is fixedly connected to the inner wall of the control box (41), and the end of the limiting rod (46) away from the control box (41) passes through the side of the slide plate (42).
10. The roller pressure adjusting mechanism of a rotary printing press according to claim 9, characterized in that, A one-way valve (48) is provided on the outer wall of the unblocking pipe (47), and a replenishment pipe (411) passes through the top of the oil storage tank (410). The oil storage tank (410) is located at the bottom of the control box (41).