Inkjet structure of rotary printing press

Abstract

The invention discloses an inkjet structure of a rotary printing press, and relates to the technical field of rotary printing presses, including an inkjet cartridge and a dredging assembly, wherein a nozzle head is arranged at the bottom of the inkjet cartridge, and the dredging assembly is arranged at the top of the inkjet cartridge, a micro push rod is fixed on one side of the top surface of the inkjet cartridge, and the ends of the micro push rods at either end are connected to a rotating disk through a micro motor, and a transmission belt is sleeved on the outer wall of the rotating disk. The inkjet structure of the rotary printing press monitors the inkjet amount of each nozzle head, so as to find the nozzle head that may be blocked at the first time, and control the micro push rod corresponding to the nozzle head to extend, so as to dredge the nozzle head that may be blocked, and during dredging, the dredging ejector pin performs a lifting piston motion in the inkjet channel inside the nozzle head, and at the same time, the meshing gear is rotated to hit the convex force block that drops to the lowest point, so that the bottom of the dredging ejector pin vibrates, thereby enhancing the dredging effect on the inkjet channel inside the nozzle head.

Description

Technical Field

[0001] The invention relates to the technical field of rotary printing presses, in particular to an inkjet structure of a rotary printing press. Background Art

[0002] Rotary printing presses usually do not use inkjet structures, but use traditional printing technologies such as offset printing, gravure printing or flexographic printing. However, with the development of technology, inkjet technology has also been applied to certain special types of rotary printing presses, especially when variable data printing or personalized printing is required. The inkjet structure is responsible for spraying ink onto the moving web of paper. The inkjet structure usually contains multiple nozzles, which can be arranged in one or more rows to cover the width of the web of paper.

[0003] In actual use, the inkjet channel of the existing inkjet structure is easily clogged, and the nozzle needs to be frequently removed for cleaning, which is time-consuming and labor-intensive and easily affects the progress of printing operations.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an inkjet structure of a rotary printing press is proposed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an inkjet structure for a rotary printing press, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an inkjet structure of a rotary printing press, comprising an inkjet cartridge and a dredging assembly, the bottom of the inkjet cartridge is provided with a nozzle head, the dredging assembly is provided with the top of the inkjet cartridge, the dredging assembly comprises a dredging bracket, a transmission gear, a transmission drum, a lifting groove, a lifting column, a dredging ejector pin, a micro push rod, a rotating disk, a transmission belt and a meshing gear, the internal rotation of the dredging bracket is connected with the transmission gear, and the transmission gear is penetrated by a transmission drum, the upper surface of the transmission drum is provided with a lifting groove, and the interior of the transmission drum is penetrated by a lifting column, the bottom of the lifting column is penetrated by a dredging ejector pin, a micro push rod is fixed to one side of the top surface of the inkjet cartridge, and the ends of the micro push rods at either end are connected to the rotating disk through a micro motor, the outer wall of the rotating disk is provided with a transmission belt, and the bottom of the rotating disk is connected with a meshing gear.

[0007] Furthermore, the convex shaft on the surface of the lifting column is inserted into the lifting groove, and the lifting column is rotationally connected to the transmission gear through the lifting groove and the transmission drum.

[0008] Furthermore, the dredging component also includes a central convex force-bearing block, a convex force-bearing block is passed through the middle of the lifting column, and the convex force-bearing block is fixedly connected to the top of the dredging ejector pin.

[0009] Furthermore, the dredging assembly also includes a torsion spring striking rod, and a torsion spring striking rod is arranged at the bottom of the meshing gear.

[0010] Furthermore, the lifting column passes through the top of the inkjet cartridge, and the lifting column and the unblocking ejector pin are located directly above the nozzle head.

[0011] Furthermore, the length of the dredging ejector pin is greater than the depth of the nozzle head, and the diameter of the dredging ejector pin is smaller than the inner diameter of the nozzle head.

[0012] Furthermore, the dredging component also includes a middle section plate, and the middle section plate is fixed to the outer wall of the middle section of the movable rod of the micro push rod.

[0013] Furthermore, a limiting plate is provided on one side of the middle plate close to the rotating disk, and an end of the limiting plate is close to the outer wall of the transmission belt.

[0014] Furthermore, the dredging assembly also includes a U-shaped rod and a slag storage box. The U-shaped rod is fixed to the side of the middle plate away from the rotating disk, and the slag storage box is inserted into the bottom end of the U-shaped rod.

[0015] Furthermore, the slag storage box and the nozzle head are arranged one-to-one, and the inner diameter of the slag storage box is larger than the inner diameter of the nozzle head.

[0016] The present invention provides an inkjet structure for a rotary printing press, which has the following beneficial effects:

[0017] 1. The inkjet structure of the rotary printing press monitors the inkjet volume of each nozzle head to find the nozzle head that may be blocked in the first time, and controls the micro push rod corresponding to the nozzle head to extend, so as to dredge the nozzle head that may be blocked. During dredging, the dredging ejector performs a lifting piston movement in the inkjet channel inside the nozzle head, and at the same time, the meshing gear is rotated to hit the convex force-bearing block that drops to the lowest point, so that the bottom of the dredging ejector vibrates, thereby enhancing the dredging effect on the inkjet channel inside the nozzle head.

[0018] 2. The inkjet structure of the rotary printing press is that when the meshing gear moves with the extension of the movable rod of the micro push rod, the middle plate moves synchronously with the meshing gear, and the limit plate on the side of the middle plate is always close to the outer wall of the transmission belt, so that the transmission belt is always meshed and connected with the meshing gear, thereby ensuring that the meshing gear can rotate to drive the transmission gear, and when the micro push rod is extended, the middle plate is synchronously extended, and at this time, the slag storage box is synchronously extended and moved to the bottom of the nozzle head through the U-shaped rod. When the dredging ejector pin is lifted to dredge the inkjet channel inside the nozzle head, the debris discharged by the dredging can fall into the slag storage box for collection, so as to prevent the debris from falling at will. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1A schematic diagram of the top structure of an inkjet cartridge of an inkjet structure of a rotary printing press according to the present invention;

[0020] Figure 2 A schematic diagram of the bottom structure of an inkjet cartridge of an inkjet structure of a rotary printing press according to the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the inkjet structure of a rotary printing press before the ejector pin of the dredging structure descends;

[0022] Figure 4 It is a structural schematic diagram of a convex force-bearing block of an inkjet structure of a rotary printing press according to the present invention when it descends to the lowest position;

[0023] Figure 5 This is a structural schematic diagram of an inkjet structure of a rotary printing press when the meshing gear and the transmission gear are not connected.

[0024] In the figure: 1. inkjet cartridge; 2. nozzle head; 3. dredging assembly; 301. dredging bracket; 302. transmission gear; 303. transmission drum; 304. lifting slot; 305. lifting column; 306. dredging ejector pin; 307. micro push rod; 308. rotating disk; 309. transmission belt; 310. meshing gear; 311. convex force block; 312. torsion spring striking rod; 313. middle plate; 314. U-shaped rod; 315. slag storage box. DETAILED DESCRIPTION

[0025] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] like Figure 1-Figure 5As shown, the present invention provides a technical solution: an inkjet structure of a rotary printing press, comprising an inkjet cartridge 1 and a dredging component 3, wherein the bottom of the inkjet cartridge 1 is provided with a nozzle head 2, the dredging component 3 is provided with the top of the inkjet cartridge 1, the dredging component 3 comprises a dredging bracket 301, a transmission gear 302, a transmission drum 303, a lifting groove 304, a lifting column 305, a dredging ejector pin 306, a micro push rod 307, a rotating disk 308, a transmission belt 309 and a meshing gear 310, the internal rotation of the dredging bracket 301 is connected with the transmission gear 302, and the transmission gear 302 is penetrated by the transmission drum 303, the upper surface of the transmission drum 303 is provided with a lifting groove 304, and the transmission drum 303 is penetrated by the lifting column 305, the bottom of the lifting column 305 is penetrated with the dredging ejector pin 306, a micro push rod 307 is fixed to one side of the top surface of the inkjet cartridge 1, and the end of the micro push rod 307 at either end The bottom of the lifting column 305 is connected with a rotating disk 308 through a micro motor, and a transmission belt 309 is sleeved on the outer wall of the rotating disk 308. A meshing gear 310 is connected to the bottom of the rotating disk 308. The convex shaft on the surface of the lifting column 305 is penetrated into the lifting groove 304, and the lifting column 305 is rotatably connected with the transmission gear 302 through the lifting groove 304 and the transmission drum 303. The dredging component 3 also includes a convex force block 311, and a convex force block 311 is penetrated in the middle of the lifting column 305, and the convex force block 311 is fixedly connected with the top of the dredging ejector pin 306. The dredging component 3 also includes a torsion spring striking rod 312, and a torsion spring striking rod 312 is provided at the bottom of the meshing gear 310. The lifting column 305 passes through the top of the inkjet cartridge 1, and the lifting column 305 and the dredging ejector pin 306 are located directly above the nozzle head 2. The length of the dredging ejector pin 306 is greater than the depth of the nozzle head 2, and the diameter of the dredging ejector pin 306 is smaller than the inner diameter of the nozzle head 2.

[0027] The specific operation is as follows: the nozzle head 2 sprays the ink in the inkjet cartridge 1 toward the web, and each nozzle head 2 monitors the ink spraying amount through a flow sensor when spraying. If the ink spraying amount of a nozzle head 2 is less than a preset value, it indicates that the nozzle head 2 is clogged;

[0028] At this time, the micro push rod 307 corresponding to the nozzle head 2 extends out to make the meshing gear 310 mesh with the transmission gear 302. Under the drive of the micro motor, all the rotating disks 308 rotate through the transmission drum 303. At this time, the meshing gear 310 meshing with the transmission gear 302 rotates synchronously due to the rotation of the rotating disk 308, thereby making the transmission gear 302 above the blocked nozzle head 2 rotate, and the transmission gear 302 will drive the transmission drum 303 to rotate. During the rotation of the lifting groove 304, the lifting column 305 and the dredging ejector pin 306 are carried to perform a lifting piston movement along the inside of the transmission drum 303. During the piston movement, the dredging ejector pin 306 penetrates the inkjet channel inside the nozzle head 2, thereby dredging the nozzle head 2.

[0029] When the dredging ejector pin 306 is raised or lowered, the convex force-bearing block 311 at the top moves downward to the bottom of the transmission drum 303 whenever the dredging ejector pin 306 drops to the lowest position. At this time, the meshing gear 310 rotates to make the torsion spring striking rod 312 rotate and hit the surface of the convex force-bearing block 311. The convex force-bearing block 311 is stressed and transmits the impact force to the dredging ejector pin 306, so that the bottom end of the dredging ejector pin 306 vibrates, so that the dredging ejector pin 306 vibrates and loosens the blockage inside the inkjet channel of the nozzle head 2 when entering the inkjet channel of the nozzle head 2, so as to enhance the dredging effect on the inkjet channel inside the nozzle head 2.

[0030] The lifting column 305 penetrates the top of the inkjet cartridge 1, and the contact portion between the lifting column 305 and the inkjet cartridge 1 is sealed by a sealing ring to prevent the ink inside the inkjet cartridge 1 from leaking out from the connection. Moreover, the torsion spring striking rod 312 hits the outside of the convex force-bearing block 311 that has dropped to the lowest point every rotation, thereby causing the bottom end of the dredging ejector pin 306 to vibrate under force, while the lifting column 305 itself is not greatly affected. Moreover, the sealing ring is used to unload the force to prevent the connection between the lifting column 305 and the inkjet cartridge 1 from generating a gap due to long-term vibration.

[0031] Based on the above description, the present invention monitors the ink spraying volume of each nozzle head 2 to find the nozzle head 2 that may be clogged in the first time, and controls the micro push rod 307 corresponding to the nozzle head 2 to extend, so as to realize automatic and accurate unblocking operation of the nozzle head 2 that may be clogged. During unblocking, the unblocking ejector pin 306 performs a lifting piston movement in the inkjet channel inside the nozzle head 2, and at the same time, the meshing gear 310 is rotated to hit the convex force block 311 that has dropped to the lowest point, so that the bottom of the unblocking ejector pin 306 vibrates, thereby enhancing the unblocking effect of the inkjet channel inside the nozzle head 2.

[0032] like Figure 1-Figure 5 As shown, the dredging component 3 also includes a middle plate 313, and the middle plate 313 is fixed to the outer wall of the middle section of the movable rod of the micro push rod 307. A limit plate is provided on the side of the middle plate 313 close to the rotating disk 308, and the limit plate is not shown in the figure, and the end of the limit plate is close to the outer wall of the transmission belt 309. The dredging component 3 also includes a U-shaped rod 314 and a slag storage box 315. The U-shaped rod 314 is fixed to the side of the middle plate 313 away from the rotating disk 308, and the bottom end of the U-shaped rod 314 is plugged with a slag storage box 315, and the slag storage box 315 is arranged one-to-one with the nozzle head 2, and the inner diameter of the slag storage box 315 is larger than the inner diameter of the nozzle head 2;

[0033] The specific operation is as follows: when the micro push rod 307 is extended to make the meshing gear 310 mesh with the transmission gear 302, the transmission belt 309 will inevitably be deformed. In order to prevent the transmission belt 309 from being unable to drive the meshing gear 310 in the middle to rotate, when the meshing gear 310 moves with the extension of the movable rod of the micro push rod 307, the middle plate 313 moves synchronously with the meshing gear 310, and the limiting plate on the side of the middle plate 313 is always close to the outer wall of the transmission belt 309, so that the transmission belt 309 is always meshed and connected with the meshing gear 310, thereby ensuring that the meshing gear 310 can rotate to drive the transmission gear 302;

[0034] When the micro push rod 307 is extended, the middle plate 313 is extended synchronously, and the slag storage box 315 is carried by the U-shaped rod 314 and extended synchronously to the bottom of the nozzle head 2. When the ejector pin 306 is raised and lowered to dredge the inkjet channel inside the nozzle head 2, the debris discharged by the dredging can fall into the slag storage box 315 and be collected, so that the debris can be prevented from falling at will. Moreover, the slag storage box 315 is plug-in connected to the U-shaped rod 314, and the slag storage box 315 can be directly unplugged at a later time to dump the debris inside.

[0035] In summary, when the inkjet structure of the rotary printing press is used, the nozzle head 2 first sprays the ink in the inkjet cartridge 1 toward the web, and each nozzle head 2 monitors the ink spraying amount through the flow sensor when spraying. If the ink spraying amount of a nozzle head 2 is less than the preset value, it indicates that the nozzle head 2 is clogged;

[0036] At this time, the micro push rod 307 corresponding to the nozzle head 2 extends out to make the meshing gear 310 mesh with the transmission gear 302. Under the drive of the micro motor, all the rotating disks 308 rotate through the transmission drum 303. At this time, the meshing gear 310 meshing with the transmission gear 302 rotates synchronously due to the rotation of the rotating disk 308, thereby making the transmission gear 302 above the blocked nozzle head 2 rotate, and the transmission gear 302 will drive the transmission drum 303 to rotate. During the rotation of the lifting groove 304, the lifting column 305 and the dredging ejector pin 306 are carried along the inside of the transmission drum 303 to perform a lifting piston movement. The dredging ejector pin 306 penetrates the inkjet channel inside the nozzle head 2 during the piston movement, thereby dredging the nozzle head 2. By monitoring the inkjet amount of each nozzle head 2, the nozzle head 2 that may be blocked can be found at the first time, and the micro push rod 307 corresponding to the nozzle head 2 can be controlled to extend, so as to realize automatic and accurate dredging of the nozzle head 2 that may be blocked.

[0037] When the dredging ejector 306 is raised or lowered, the convex force-bearing block 311 at the top moves downward to the bottom of the transmission drum 303 whenever the dredging ejector 306 drops to the lowest position. At this time, the meshing gear 310 rotates to make the torsion spring striking rod 312 rotate and hit the surface of the convex force-bearing block 311. The convex force-bearing block 311 is stressed and transmits the impact force to the dredging ejector 306, so that the bottom end of the dredging ejector 306 vibrates, so that the dredging ejector 306 vibrates the blockage inside the inkjet channel entering the nozzle head 2 and loosens the blockage inside the channel.

[0038] The lifting column 305 penetrates the top of the inkjet cartridge 1, and the contact portion between the lifting column 305 and the inkjet cartridge 1 is sealed by a sealing ring to prevent the ink inside the inkjet cartridge 1 from leaking out from the connection. Moreover, the torsion spring striking rod 312 hits the outside of the convex force-bearing block 311 that has dropped to the lowest point every rotation, thereby causing the bottom end of the dredging ejector pin 306 to vibrate under force, while the lifting column 305 itself is not greatly affected. Moreover, the sealing ring is used to unload the force to prevent the connection between the lifting column 305 and the inkjet cartridge 1 from generating a gap due to long-term vibration.

[0039] When the micro push rod 307 is extended, the middle plate 313 is extended synchronously. At this time, the slag storage box 315 is carried by the U-shaped rod 314 and extended synchronously to the bottom of the nozzle head 2. When the unblocking ejector pin 306 is raised and lowered to unblock the inkjet channel inside the nozzle head 2, the debris discharged by the unblocking is allowed to fall into the slag storage box 315 for collection. After the nozzle head 2 is unblocked, the unblocking ejector pin 306 rises and leaves the inkjet channel, and the micro push rod 307 contracts to separate the meshing gear 310 from the transmission gear 302, and the slag storage box 315 is translated away from directly below the nozzle head 2, thereby facilitating the unblocked nozzle head 2 to re-participate in the inkjet operation.

[0040] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An inkjet structure for a rotary printing press, comprising an inkjet cartridge (1) and a dredging assembly (3), characterized in that: The bottom of the inkjet cartridge (1) is provided with a nozzle head (2), the top of the inkjet cartridge (1) is provided with the dredging component (3), the dredging component (3) comprises a dredging support (301), a transmission gear (302), a transmission drum (303), a lifting groove (304), a lifting column (305), a dredging ejector pin (306), a micro push rod (307), a rotating disk (308), a transmission belt (309) and a meshing gear (310), the interior of the dredging support (301) is rotatably connected with the transmission gear (302), and the transmission drum is penetrated inside the transmission gear (302). (303), a lifting groove (304) is provided on the upper surface of the transmission drum (303), and a lifting column (305) is penetrated inside the transmission drum (303), and a clearing ejector pin (306) is penetrated at the bottom of the lifting column (305), a micro push rod (307) is fixed on one side of the top surface of the inkjet cartridge (1), and the end of the micro push rod (307) at either end is connected to a rotating disk (308) through a micro motor, the outer wall of the rotating disk (308) is sleeved with a transmission belt (309), and the bottom of the rotating disk (308) is connected to a meshing gear (310).

2. The inkjet structure of a rotary printing press according to claim 1, characterized in that: The convex shaft on the surface of the lifting column (305) is inserted into the lifting groove (304), and the lifting column (305) is rotationally connected with the transmission gear (302) through the lifting groove (304) and the transmission drum (303).

3. The inkjet structure of a rotary printing press according to claim 1, characterized in that: The dredging component (3) further comprises a central convex force-bearing block (311), the central part of the lifting column (305) is provided with the convex force-bearing block (311), and the convex force-bearing block (311) is fixedly connected to the top of the dredging ejector pin (306).

4. The inkjet structure of a rotary printing press according to claim 1, characterized in that: The dredging assembly (3) further comprises a torsion spring striking rod (312), and a torsion spring striking rod (312) is arranged at the bottom of the meshing gear (310).

5. The inkjet structure of a rotary printing press according to claim 1, characterized in that: The lifting column (305) passes through the top of the inkjet cartridge (1), and the lifting column (305) and the dredging ejector pin (306) are located directly above the nozzle head (2).

6. The inkjet structure of a rotary printing press according to claim 1, characterized in that: The length of the dredging ejector pin (306) is greater than the depth of the nozzle head (2), and the diameter of the dredging ejector pin (306) is smaller than the inner diameter of the nozzle head (2).

7. The inkjet structure of a rotary printing press according to claim 1, characterized in that: The dredging component (3) further comprises a middle section plate (313), and the middle section plate (313) is fixed to the outer wall of the middle section of the movable rod of the micro push rod (307).

8. The inkjet structure of a rotary printing press according to claim 7, characterized in that: A limiting plate is provided on one side of the middle plate (313) close to the rotating disk (308), and the end of the limiting plate is close to the outer wall of the transmission belt (309).

9. The inkjet structure of a rotary printing press according to claim 7, characterized in that: The dredging assembly (3) further comprises a U-shaped rod (314) and a slag storage box (315); a U-shaped rod (314) is fixed to the side of the middle plate (313) away from the rotating disk (308), and a slag storage box (315) is inserted into the bottom end of the U-shaped rod (314).

10. The inkjet structure of a rotary printing press according to claim 9, characterized in that: The slag storage box (315) and the nozzle head (2) are arranged one-to-one, and the inner diameter of the slag storage box (315) is larger than the inner diameter of the nozzle head (2).

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