A rotary printing press

Abstract

This utility model discloses a rotary printing press, comprising: a rotary cylinder assembly; and an oil dripping assembly, disposed on one side of the rotary cylinder assembly along a first direction, including a vertical plate, a connecting rod, multiple movable supports, and multiple needle valve-type oil cups. The vertical plate extends along a second direction and is spaced apart along a third direction. The connecting rod extends along a third direction, with both ends connected to the vertical plate and spaced apart along the second direction. The multiple movable supports are spaced apart along the third direction and correspond one-to-one with the multiple needle valve-type oil cups. One end of each movable support is slidably engaged with the connecting rod, and the other end is connected to the needle valve-type oil cup for dripping oil into the rotary cylinder assembly. The vertical plate and connecting rod form a three-dimensional frame, and the design of one-to-one correspondence between the needle valve-type oil cups and the movable supports allows for flexible adjustment of the oil cup position through the sliding supports. The needle valves can control the oil volume at a single point, and the sliding design of the supports can match the lubrication requirements of paper of different widths without the need for component replacement.

Description

Technical Field

[0001] This utility model relates to the field of rotary printing press technology, and specifically to a rotary printing press. Background Technology

[0002] In existing technologies, the oil storage system of traditional rotary printing presses is mostly a side-mounted or high-level oil tank with a simple sealing structure. During on-site operation, oil leakage is prone to occur due to diaphragm aging, weld cracking, etc., which not only pollutes the paper products but also deteriorates the workshop environment. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a rotary printing machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts a rotary printing machine, comprising:

[0005] Roller assembly.

[0006] An oil dripping assembly, located on one side of the roller assembly along a first direction, includes a vertical plate, a connecting rod, multiple movable supports, and multiple needle valve-type oil cups. The vertical plate extends along a second direction and is spaced apart along the third direction. The connecting rod extends along the third direction, with both ends connected to the vertical plate, and is spaced apart along the second direction. The multiple movable supports are spaced apart along the third direction and correspond one-to-one with the multiple needle valve-type oil cups. One end of each movable support is slidably engaged with the connecting rod, and the other end is connected to the needle valve-type oil cup for dripping oil into the roller assembly.

[0007] This utility model provides a rotary printing machine in which the oil dripping component is set independently to the side of the rotary assembly (along a first direction). A three-dimensional frame is formed by a vertical plate and connecting rods, avoiding direct occupation of the internal space of the rotary assembly. The vertical plate and connecting rods constitute a double parallel guide rail structure, providing rigid support. A needle valve-type oil cup and a movable support are designed to correspond one-to-one. The position of the oil cup can be flexibly adjusted through the sliding support. The needle valve can control the oil volume at a single point, avoiding excessive waste from traditional felt or brush coating. The sliding design of the support (adjustable in the third direction) can match the lubrication needs of paper of different widths without the need for component replacement.

[0008] In some embodiments, the roller assembly includes a first roller, a paper winding roller, and a second roller. The first roller, the paper winding roller, and the second roller all extend along the third direction and are spaced apart along the first direction. The paper winding roller is positioned above the first roller and the second roller to allow paper to be rotated and conveyed from the paper winding roller along the first roller and the second roller. The oil dripping assembly is located on the side of the first roller away from the second roller along the first direction.

[0009] Using the above technical solution, the oil-drip assembly is located on the side of the first roller furthest from the second roller (i.e., the paper inlet end), so that the lubricating oil is applied before the paper first comes into contact with the hot press. This solution optimizes cleanliness, maintenance efficiency, and process scalability through its core design of pre-lubrication and path optimization.

[0010] In some embodiments, each of the movable supports includes a connecting portion and a supporting portion. The connecting portion extends along the second direction and has a fixing through hole corresponding to the connecting rod for sliding connection with the connecting rod. The supporting portion is located above the first roller, with one end connected to the top end of the connecting portion along the first direction and the other end having a mounting through hole extending along the second direction. The bottom of the needle valve oil cup is fixed within the mounting through hole.

[0011] Using the above technical solution, the bearing part extends horizontally from the top of the connecting part in the first direction, forming a lateral cantilever and high-position bearing structure, so that the oil cup is located above the first roller rather than on the side. Compared with the traditional sliding sleeve, which can only move as a whole, this structure can finely adjust the lateral position of the drip point by moving only the connecting part without loosening the connecting rod.

[0012] In some embodiments, the rotary printing press further includes a fixed frame, the fixed frame having a top plate at the top and a pad at the bottom, both the top plate and the pad extending along the third direction. The roller assembly and the dripping assembly are both located on the top plate, and the top plate has clearance areas corresponding to the first roller and the second roller. The bottom of the top plate has an oil-receiving sheet metal, which corresponds to the clearance areas and has an oil outlet on one side along the first direction.

[0013] Using the above technical solution, an oil-receiving sheet metal is installed directly below the top plate, facing the avoidance area, forming a closed oil collection chamber. Oil droplets fall directly into the sheet metal, no longer flowing along the frame or the ground. The oil-receiving sheet metal has an oil outlet on one side for quick connection to a waste oil container.

[0014] In some embodiments, the roller assembly further includes a roller fixing assembly, which includes a second fixing plate, a third fixing plate, a slider, and a linear guide rail. The second and third fixing plates are both arranged parallel to each other along the second direction, and each has a bearing groove on its top for supporting the first and second rollers. The bottom of the second fixing plate is connected to the top plate, and the bottom of the third fixing plate is connected to the slider. The bottom of the slider is slidably connected to the linear guide rail. The linear guide rail extends along the third direction and is used to adjust the distance between the third fixing plate and the second fixing plate.

[0015] Using the above technical solution, the bottom of the third fixing plate is mounted on a linear guide rail extending along the third direction (drum axis) via a slider, which can drive the second drum to slide as a whole. The center distance can be set arbitrarily within the designed stroke without replacing gears or chains, enabling rapid switching between different drum models.

[0016] In some embodiments, the roller assembly further includes a roll fixing assembly, which includes a first fixing plate and a rotary positioning shaft. The first fixing plate extends along the second direction and is disposed near one end of the top plate along the third direction. The rotary positioning shaft extends along the third direction, with one end connected to the first fixing plate for supporting the paper roll.

[0017] In some embodiments, the rotary printing press further includes a heating assembly disposed along the second direction between the paper roll and the first and second rolls. The heating assembly includes a fourth fixing plate, a fixing tube, a first circular tube, and a second circular tube. The fourth fixing plate extends along the second direction and is positioned near the other end of the top plate along the third direction. The fixing tube extends along the third direction, with one end connected to the fourth fixing plate. The first and second circular tubes both extend along the second direction and are respectively located on both sides of the fixing tube along the first direction, communicating with the fixing tube. The first and second circular tubes are each provided with a plurality of nozzles spaced apart and facing the first and second rolls respectively, for communication with an external hot air device through the fixing tube to eject hot air through the nozzles.

[0018] Using the above technical solution, the first circular tube faces the first roller, the second circular tube faces the second roller, and the two linear nozzles emit air evenly along the entire length of the roller. Compared with single-sided concentrated air outlet or far-infrared lamp tube, the roller surface is heated more evenly.

[0019] In some embodiments, the rotary printing press further includes an oil storage assembly, which includes an oil tank, a drive motor, a check valve, and a connection interface group. The drive motor is located on one side of the oil tank, which is located on top of the pad. The top has an oil inlet pipe and an oil outlet pipe. The oil outlet pipe passes through the top plate along the second direction and communicates with the input end of the connection interface group. The check valve is located at the connection between the oil outlet pipe and the connection interface group. Multiple output ends of the connection interface group are correspondingly connected to multiple needle valve-type oil cups.

[0020] By adopting the above technical solution, the oil storage component utilizes the interlayer space between the pad and the top plate to integrate the oil tank, valves, and interfaces into a centralized oil supply unit with a low center of gravity, short pipelines, and quick-connect maintenance. This not only reduces vibration and saves space but also achieves zero leakage and second-level maintenance, making it particularly suitable for high-speed, clean, and compact production lines. Attached Figure Description

[0021] Figure 1 This is a perspective view of an embodiment of a rotary printing machine according to the present invention;

[0022] Figure 2 This is a side view of an embodiment of a rotary printing machine according to the present invention;

[0023] In the picture:

[0024] 1. Rotary printing press; 10. Fixed frame; 11. Top plate; 12. Clearance area; 13. Pad plate; 14. Oil receiving sheet metal; 2. Roller assembly; 20. First roller; 21. Paper roll roller; 22. Second roller; 23. Second fixed plate; 24. Third fixed plate; 25. Slider; 26. Linear guide rail; 27. First fixed plate; 28. Rotary positioning shaft; 3. Oil dripping assembly; 30. Vertical plate; 31. Connecting rod; 32. Moving bracket; 33. Connecting part; 34. Bearing part; 35. Mounting through hole; 40. Fourth fixed plate; 41. Fixed pipe; 42. First round pipe; 43. Second round pipe; 44. Nozzle; 50. Oil tank; 51. Drive motor; 52. Connecting interface group. Detailed Implementation

[0025] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0026] refer to Figure 1 and Figure 2 , Figure 1 A perspective view of a rotary printing press 1 provided in an embodiment of the present invention is shown; Figure 2 A side view of a rotary printing press 1 provided in an embodiment of the present invention is shown.

[0027] like Figure 1 and Figure 2 As shown, the technical solution provided in this application is a rotary printing press 1, comprising:

[0028] Roller assembly 2.

[0029] The oil dripping assembly 3 is located on the roller assembly 2 along the first direction ( Figure 1 One side (as shown in the Y direction) includes a vertical plate 30, a connecting rod 31, multiple movable supports 32, and multiple needle valve oil cups (not shown in the figure). The vertical plate 30 is along the second direction ( Figure 1 Extending in the Z direction (as shown), and spaced apart along the third direction. Connecting rod 31 extends along the third direction (as shown). Figure 1Extending in the X direction, both ends are connected to the vertical plate 30 and are spaced apart along the second direction. Multiple movable supports 32 are spaced apart along the third direction and are correspondingly set with multiple needle valve oil cups. One end of each movable support 32 is slidably engaged with the connecting rod 31, and the other end is connected to the needle valve oil cup for dripping oil into the roller assembly 2.

[0030] This application provides a rotary printing machine 1 in which the oil dripping assembly 3 is independently arranged laterally (along a first direction) from the rotary assembly 2. A three-dimensional frame is formed by the upright plate 30 and the connecting rod 31, avoiding direct occupation of the internal space of the rotary assembly 2. The upright plate 30 and the connecting rod 31 form a double parallel guide rail structure, forming a rigid support. A needle valve type oil cup and a movable bracket 32 ​​are designed to correspond one-to-one. The position of the oil cup can be flexibly adjusted by sliding the bracket. The needle valve can control the amount of oil at a single point, avoiding excessive waste from traditional felt or brush coating. The sliding design of the bracket (adjustable in the third direction) can match the lubrication requirements of paper with different widths without the need to replace parts.

[0031] 2. In some embodiments, reference is made to Figure 1 and Figure 2 The roller assembly 2 includes a first roller 20, a paper winding roller 21, and a second roller 22. The first roller 20, the paper winding roller 21, and the second roller 22 all extend along a third direction and are spaced apart along a first direction. The paper winding roller 21 is positioned above the first roller 20 and the second roller 22, allowing paper to be rotated and conveyed from the paper winding roller 21 along the first roller 20 and the second roller 22. The oil dripping assembly 3 is located on the side of the first roller 20 away from the second roller 22 along the first direction.

[0032] For example, the oil-drip assembly 3 is located on the side of the first roller 20 away from the second roller 22 (i.e., the paper inlet end), so that the lubricating oil is applied before the paper first comes into contact with the hot press. This solution optimizes cleanliness, maintenance efficiency, and process scalability through the core design of pre-lubrication and path optimization.

[0033] 3. In some embodiments, reference is made to... Figure 1 and Figure 2 Each movable support 32 includes a connecting part 33 and a supporting part 34. The connecting part 33 extends along a second direction and has a fixing through hole corresponding to the connecting rod 31 for sliding connection with the connecting rod 31. The supporting part 34 is located above the first roller 20, with one end connected to the top of the connecting part 33 along a first direction, and the other end having a mounting through hole 35 extending along a second direction. The bottom of the needle valve type oil cup is fixed in the mounting through hole 35.

[0034] For example, the support portion 34 extends horizontally from the top of the connecting portion 33 in a first direction, forming a lateral cantilever and high-position support structure, so that the oil cup is located above the first roller 20 rather than on the side. Compared with the conventional sliding sleeve, which can only move as a whole, this structure can finely adjust the lateral position of the drip point by moving only the connecting portion 33 without loosening the connecting rod 31.

[0035] 4. In some embodiments, reference is made to... Figure 1 and Figure 2 The rotary printing machine 1 also includes a fixed frame 10, with a top plate 11 at the top and a pad 13 at the bottom, both extending in a third direction. The roller assembly 2 and the dripping assembly 3 are both located on the top of the top plate 11. The top plate 11 has a clearance area 12 corresponding to the first roller 20 and the second roller 22. The bottom of the top plate 11 has an oil-receiving sheet metal 14, which corresponds to the clearance area 12 and has an oil outlet on one side along the first direction.

[0036] For example, an oil-receiving sheet metal 14 is provided directly below the top plate 11 and opposite the clearance area 12, forming a closed oil collection chamber. Oil droplets fall directly into the sheet metal and no longer flow along the frame or the ground. The oil-receiving sheet metal 14 has an oil outlet on one side, which can be quickly connected to a waste oil tank.

[0037] 5. In some embodiments, reference is made to Figure 1 and Figure 2 The roller assembly 2 also includes a roller fixing assembly, which includes a second fixing plate 23, a third fixing plate 24, a slider 25, and a linear guide rail 26. The second fixing plate 23 and the third fixing plate 24 are both arranged parallel to each other along a second direction, and each has a bearing groove on its top for supporting the first roller 20 and the second roller 22. The bottom of the second fixing plate 23 is connected to the top plate 11, and the bottom of the third fixing plate 24 is connected to the slider 25. The bottom of the slider 25 is slidably connected to the linear guide rail 26. The linear guide rail 26 extends along a third direction and is used to adjust the distance between the third fixing plate 24 and the second fixing plate 23.

[0038] For example, the bottom of the third fixing plate 24 is mounted on a linear guide 26 extending along the third direction (the roller axis) via a slider 25, which can drive the second roller 22 to slide as a whole. The center distance can be set arbitrarily within the designed stroke without replacing gears or chains, enabling quick switching between different roller models.

[0039] 6. In some embodiments, reference is made to Figure 1 and Figure 2The roller assembly 2 also includes a roll fixing assembly, which includes a first fixing plate 27 and a rotary positioning shaft 28. The first fixing plate 27 extends in a second direction and is disposed near one end of the top plate 11 in a third direction. The rotary positioning shaft 28 extends in a third direction and is connected at one end to the first fixing plate 27 for supporting the paper roll 21.

[0040] 7. In some embodiments, reference is made to... Figure 1 and Figure 2 The rotary printing press 1 also includes a heating assembly, which is disposed along a second direction between the paper roll 21 and the first roll 20 and the second roll 22. The heating assembly includes a fourth fixing plate 40, a fixing tube 41, a first circular tube 42, and a second circular tube 43. The fourth fixing plate 40 extends along the second direction and is located near the other end of the top plate 11 along a third direction. The fixing tube 41 extends along a third direction, with one end connected to the fourth fixing plate 40. The first circular tube 42 and the second circular tube 43 both extend along the second direction and are respectively disposed on both sides of the fixing tube 41 along the first direction, communicating with the fixing tube 41. The first circular tube 42 and the second circular tube 43 are each provided with a plurality of nozzles 44 spaced apart, respectively facing the first roll 20 and the second roll 22, for communicating with an external hot air device through the fixing tube 41 to eject hot air through the nozzles 44.

[0041] For example, the first circular tube 42 faces the first roller 20, the second circular tube 43 faces the second roller 22, and the two linear nozzles 44 uniformly discharge air along the entire length of the roller. Compared with concentrated air discharge on one side or far-infrared lamp tubes, the roller surface is heated more evenly.

[0042] 8. In some embodiments, reference is made to Figure 1 and Figure 2 The rotary printing press 1 also includes an oil storage assembly, which includes an oil tank 50, a drive motor 51, a check valve, and a connection interface group 52. The drive motor 51 is located on one side of the oil tank 50, which is located on top of the pad 13. The top has an oil inlet pipe and an oil outlet pipe. The oil outlet pipe passes through the top plate 11 in a second direction and is connected to the input end of the connection interface group 52. The check valve is located at the connection between the oil outlet pipe and the connection interface group 52. Multiple output ends of the connection interface are connected to multiple needle valve type oil cups.

[0043] For example, the oil storage assembly utilizes the interlayer space between the pad 13 and the top plate 11 to integrate the oil tank 50, valves, and interfaces into a centralized oil supply unit with a low center of gravity, short pipelines, and quick-connect maintenance. This not only reduces vibration and saves space but also achieves zero leakage and second-level maintenance, making it particularly suitable for high-speed, clean, and compact production lines.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A rotary printing press, characterized in that, include: Roller assembly; An oil dripping assembly is located on one side of the roller assembly along a first direction, and includes a vertical plate, a connecting rod, multiple movable supports, and multiple needle valve oil cups. The vertical plate extends along a second direction, the connecting rod extends along a third direction, the vertical plate is spaced apart along the third direction, and both ends of the connecting rod are connected to the vertical plate and spaced apart along the second direction. Multiple movable supports are spaced apart along the third direction and are corresponding one-to-one with multiple needle valve oil cups; one end of each movable support is slidably engaged with the connecting rod, and the other end is connected to the needle valve oil cup for dripping oil into the roller assembly.

2. The rotary printing press according to claim 1, characterized in that, The roller assembly includes a first roller, a paper roll, and a second roller. The first roller, the paper roll, and the second roller all extend along the third direction and are spaced apart along the first direction. The paper roll is located above the first roller and the second roller to allow paper to be rotated out from the paper roll along the first roller and the second roller. The oil dripping assembly is located on the side of the first roller away from the second roller along the first direction.

3. The rotary printing press according to claim 2, characterized in that, Each of the movable supports includes a connecting part and a supporting part. The connecting part extends along the second direction and is provided with a fixing through hole corresponding to the connecting rod for sliding connection with the connecting rod. The supporting part is located above the first roller, with one end connected to the top of the connecting part along the first direction and the other end provided with a mounting through hole extending along the second direction. The bottom of the needle valve oil cup is fixed in the mounting through hole.

4. The rotary printing press according to claim 2, characterized in that, It also includes a fixed frame, the fixed frame having a top plate at the top and a pad at the bottom, both the top plate and the pad extending along the third direction; the roller assembly and the oil dripping assembly are both located on the top of the top plate, the top plate having a clearance area corresponding to the first roller and the second roller; the bottom of the top plate has an oil receiving sheet metal, the oil receiving sheet metal being corresponding to the clearance area, and having an oil outlet on one side along the first direction.

5. The rotary printing press according to claim 4, characterized in that, The roller assembly further includes a roller fixing assembly, which includes a second fixing plate, a third fixing plate, a slider, and a linear guide rail. The second fixing plate and the third fixing plate are both arranged parallel to each other along the second direction, and each has a bearing groove on its top for supporting the first roller and the second roller. The bottom of the second fixing plate is connected to the top plate, the bottom of the third fixing plate is connected to the slider, and the bottom of the slider is slidably connected to the linear guide rail. The linear guide rail extends along the third direction for adjusting the distance between the third fixing plate and the second fixing plate.

6. The rotary printing press according to claim 5, characterized in that, The roller assembly further includes a roll fixing assembly, which includes a first fixing plate and a rotary positioning shaft. The first fixing plate extends along the second direction and is disposed near one end of the top plate along the third direction. The rotary positioning shaft extends along the third direction and is connected at one end to the first fixing plate for supporting the paper roll.

7. The rotary printing press according to claim 6, characterized in that, It also includes a heating assembly, which is disposed along the second direction between the paper roll and the first and second rollers. The heating assembly includes a fourth fixing plate, a fixing tube, a first circular tube, and a second circular tube. The fourth fixing plate extends along the second direction and is disposed near the other end of the top plate along the third direction. The fixing tube extends along the third direction and is connected to the fourth fixing plate at one end. The first and second circular tubes both extend along the second direction and are respectively disposed on both sides of the fixing tube along the first direction and are connected to the fixing tube pipeline. The first and second circular tubes are each provided with a plurality of nozzles at intervals and are respectively disposed toward the first and second rollers for communication with an external hot air device through the fixing tube to spray hot air through the nozzles.

8. The rotary printing press according to claim 4, characterized in that, It also includes an oil storage assembly, which includes an oil tank, a drive motor, a check valve, and a connection interface group. The drive motor is located on one side of the oil tank, and the oil tank is located on the top of the pad. The top is provided with an oil inlet pipe and an oil outlet pipe. The oil outlet pipe passes through the top plate along the second direction and is connected to the input end of the connection interface group. The check valve is located at the connection between the oil outlet pipe and the connection interface group. Multiple output ends of the connection interface are connected to multiple needle valve type oil cups.

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