Roller printing ink control and regulation system

Abstract

The invention provides a roller ink control and adjustment system which comprises a printing roller rotationally connected to a rack, and an ink distributing mechanism is arranged in the printing roller and used for distributing ink to the printing roller; the ink distributing mechanism comprises a mounting support, an ink distributing roller, an ink roller and a driving assembly, the mounting support is connected to the rack, the ink distributing roller and the ink roller are rotationally connected to the mounting support and are arranged in parallel, and an ink storage groove for containing ink is formed between the ink distributing roller and the ink roller; the driving assembly is connected to the rack and used for pushing the mounting support so that the outer circumferential wall of the ink roller on the mounting support can abut against the inner circumferential wall of the printing roller. Before printing, the mounting bracket can be pushed through the driving assembly, so that the outer peripheral wall of the ink roller on the mounting bracket is propped against the inner peripheral wall of the printing cylinder, then the printing cylinder rotates to distribute ink to the inner peripheral wall of the printing cylinder in advance, and finally, printing is started, so that the condition of printing defects of a plurality of pieces of paper is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of quick-printing machine accessories, in particular to a roller ink control and adjustment system. Background Art

[0002] The printing press first makes the text and images to be printed into a printing plate, then installs the printing plate on the printing cylinder of the printing press, and evenly applies the ink to the printing cylinder with the printing plate through an ink distribution device, and finally directly or indirectly transfers it to the paper, thereby replicating the same printed product as the printing plate. The ink distribution device on the market usually includes an ink tank, an ink shunt pipe, an ink distribution roller, an ink roller and other structures. The ink shunt pipe evenly transports the ink in the ink tank to the ink storage tank between the ink distribution roller and the ink roller. The printing cylinder rotates and evenly applies the ink on the ink roller to the printing plate.

[0003] Because the ink roller does not contact the inner wall of the printing cylinder before the paper passes through the printing channel, it is impossible to complete the ink distribution on the inner wall of the printing cylinder in advance, which results in incomplete printing of the paper just printed, which not only affects the printing quality but also wastes paper. In addition, because the ink is viscous, its viscosity will change with the temperature change in winter and summer. However, the ink outlet gap between the existing ink distribution roller and the ink roller is fixed, which makes it difficult to control the ink outlet amount, and it is easy to cause insufficient ink outlet to cause incomplete printing or excessive ink outlet to cause ink waste. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned prior art and provide a roller ink control and adjustment system which can pre-distribute ink to the roller and adjust the ink output before printing.

[0005] The technical solution of the present invention is to provide a drum ink control and adjustment system having the following structure:

[0006] It includes a printing roller rotatably connected to a frame, wherein an ink distributing mechanism is arranged inside the printing roller for distributing ink to the printing roller; the ink distributing mechanism includes a mounting bracket, an ink distributing roller, an ink roller, a driving assembly and a spacing adjustment assembly, the mounting bracket is connected to the frame, the ink distributing roller and the ink roller are rotatably connected to the mounting bracket, the ink distributing roller and the ink roller are arranged parallel to each other, and an ink storage tank for accommodating ink is formed between the two; the driving assembly is connected to the frame, and is used to push the mounting bracket so that the outer peripheral wall of the ink roller on the mounting bracket abuts against the inner peripheral wall of the printing roller; the spacing adjustment assembly is connected to the mounting bracket, and is used to adjust the spacing between the ink distributing roller and the ink roller, thereby adjusting the ink output.

[0007] After adopting the above structure, the roller ink control and adjustment system of the present invention has the following advantages compared with the prior art:

[0008] The present invention arranges a driving component on the frame, and pushes the mounting bracket through the driving component so that the outer peripheral wall of the ink roller on the mounting bracket abuts against the inner peripheral wall of the printing cylinder. Then the printing cylinder rotates to pre-distribute ink to its inner peripheral wall before printing begins, thereby avoiding printing defects on the first few sheets of paper. In addition, the present invention arranges a spacing adjustment component on the mounting bracket, which can adjust the spacing between the ink distributing roller and the ink roller to adapt to the viscosity of the ink in different environments and ensure a stable ink output.

[0009] Preferably, the driving assembly includes a motor bracket, a driving motor and a cam, the motor bracket is fixedly mounted on the frame, the driving motor is connected to the motor bracket, the cam is connected to the output shaft of the driving motor, and the driving motor is used to drive the cam to rotate.

[0010] Preferably, the mounting bracket is connected to a driving shaft parallel to the ink roller and the ink roller, and the driving shaft is connected to a driving wheel, and the wheel surface of the driving wheel is used to abut against the convex surface of the cam. The cam is driven by a driving motor to rotate, so that the convex surface of the cam abuts against the wheel surface of the driving wheel, and drives the ink roller on the mounting bracket to squeeze toward the inner peripheral wall of the printing cylinder, so that the ink on the ink roller is evenly coated on the inner peripheral wall of the printing cylinder.

[0011] Preferably, the circuit of the driving motor is further provided with a control unit for controlling the rotation angle of the cam. The control unit may be two micro switches, which are arranged on the rotation track of the cam convex surface, and the rotation angle of the cam is controlled by the cooperation of the two micro switches.

[0012] Preferably, the spacing adjustment assembly includes a fixed seat, an adjusting screw block, an adjusting bolt and a fine-tuning block, the fixed seat is connected to the mounting bracket, the adjusting screw block is connected to the end of the rotating shaft of the ink uniforming roller, and the end of the adjusting screw block facing the fixed seat is provided with a screw hole matching the adjusting bolt, a through hole is provided on the fixed seat at a position corresponding to the screw hole, the connecting end of the adjusting bolt passes through the through hole on the fixed seat and is threadedly connected to the adjusting screw block; the fine-tuning block is fixedly connected to the adjusting bolt and rotates synchronously with the adjusting bolt.

[0013] The adjusting bolt is driven to rotate by rotating the fine-tuning block, thereby adjusting the depth of the connecting end of the adjusting bolt in the adjusting screw block; since the fixed seat cannot move, the adjusting screw block will move with the rotation of the adjusting bolt, thereby driving the ink distribution roller closer to or away from the ink roller, and finally achieving the adjustment of the ink output.

[0014] Preferably, a return spring is sleeved on the adjusting bolt, one end of the return spring abuts against the fixing seat, and the other end abuts against the adjusting screw block. When the adjusting bolt is screwed into the adjusting screw block, the return spring will be compressed, and when the adjusting bolt is screwed out in the opposite direction, the return spring can assist the adjusting screw block in resetting.

[0015] Preferably, the upper and lower ends of the fine-tuning block extend radially to form a push portion. Since the fine-tuning block is located inside the device and is not convenient to rotate, two push portions are radially extended at its upper and lower ends. When adjustment is required, a slender tool such as a screwdriver is inserted from the side gap of the device, and one of the push portions is pressed against the fine-tuning block to adjust the adjustment bolt.

[0016] Preferably, the outer end surface of the pushing part is provided with a tooth groove part, and the fixing seat is provided with an elastic pin, and the elastic pin abuts against the end surface of one of the tooth groove parts. The cooperation between the elastic pin and the tooth groove part can make the fine adjustment block feel frustrated when rotating, which is convenient for users to perform fine adjustment.

[0017] Preferably, the ink distribution mechanism further comprises an infrared radiation sensor connected to the mounting bracket, for detecting the ink liquid level in the ink storage tank between the ink distribution roller and the ink roller.

[0018] Preferably, it also includes an ink delivery component, which includes an oil pump bracket, an oil pump motor, an ink diversion pipe and an ink tank. The oil pump bracket is connected to the frame, and the oil pump motor is fixedly mounted on the oil pump bracket. The two ends of the oil pump motor are respectively connected to the ink diversion pipe and the ink tank through oil delivery pipes, so as to deliver the ink in the ink tank to the ink diversion pipe, and evenly inject the ink into the ink storage tank between the ink distribution roller and the ink roller through the ink diversion pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the local structure of the present invention.

[0022] Figure 4 It is another cross-sectional structural schematic diagram of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the spacing adjustment component in the present invention.

[0024] Description of reference numerals:

[0025] 1. Frame, 2. Printing roller, 3. Ink distribution mechanism, 31. Mounting bracket, 32. Ink distribution roller, 33. Ink roller, 34. Driving assembly, 341. Motor bracket, 342. Driving motor, 343. Cam, 35. Spacing adjustment assembly, 351. Fixed seat, 352. Adjusting screw block, 353. Adjusting bolt, 354. Fine-tuning block, 3541. Pushing part, 3542. Tooth groove part, 355. Reset spring, 356. Elastic pin, 36. Pushing shaft, 37. Pushing wheel, 38. Infrared counter-radiation sensor, 4. Ink delivery assembly, 41. Oil pump bracket, 42. Ink diverter pipe, 43. Ink box. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. At the same time, the terms "first", "second" and the like are only used to distinguish the names of the components, and have no primary or secondary relationship, and therefore cannot be understood as a limitation on the present invention.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the present invention discloses a roller ink control and adjustment system: it comprises a printing roller 2 rotatably connected to a frame 1 , and an ink distribution mechanism 3 is arranged inside the printing roller 2 for distributing ink to the printing roller 2 .

[0029] The ink distribution mechanism 3 includes a mounting bracket 31, an ink distribution roller 32, an ink roller 33, and a driving assembly 34. The mounting bracket 31 is connected to the frame 1, and the ink distribution roller 32 and the ink roller 33 are rotatably connected to the mounting bracket 31. The ink distribution roller 32 and the ink roller 33 are arranged parallel to each other, and an ink storage tank for accommodating ink is formed between the two. The driving assembly 34 is connected to the frame 1, and is used to push the mounting bracket 31 so that the outer peripheral wall of the ink roller 33 on the mounting bracket 31 is abutted against the inner peripheral wall of the printing cylinder 2.

[0030] The driving assembly 34 includes a motor bracket 341, a driving motor 342 and a cam 343. The motor bracket 341 is fixedly mounted on the frame 1, the driving motor 342 is connected to the motor bracket 341, and the cam 343 is connected to the output shaft of the driving motor 342. The driving motor 342 is used to drive the cam 343 to rotate.

[0031] The mounting bracket 31 is connected to a driving shaft 36 parallel to the ink distribution roller 32 and the ink roller 33 . The driving shaft 36 is connected to a driving wheel 37 . The wheel surface of the driving wheel 37 is used to abut against the convex surface of the cam 343 .

[0032] The present invention sets a driving motor 342 on the frame 1, and drives the cam 343 to rotate by the driving motor 342, so that the convex surface of the cam 343 is against the wheel surface of the driving wheel 37, and drives the ink roller 33 on the mounting bracket 31 to be squeezed and deformed toward the inner circumferential wall of the printing cylinder 2, so that the ink roller 33 and the inner circumferential wall of the printing cylinder 2 can be tightly fitted, and then the printing cylinder 2 rotates, so that the ink on the ink roller 33 can be evenly coated on the inner circumferential wall of the printing cylinder 2, and the pre-inking of the inner circumferential wall of the printing cylinder 2 is completed. After the ink is evenly distributed, the driving motor 342 drives the cam 343 to rotate, so that the convex surface of the cam 343 is separated from the wheel surface of the driving wheel 37. After the force applied to the mounting bracket 31 is cancelled, the ink roller 33 is reset, and finally printing is started, thereby avoiding printing defects in the first few sheets of paper.

[0033] The circuit of the driving motor 342 is also provided with a control unit (not shown in the figure) for controlling the rotation angle of the cam 343. The driving motor 342 may be a stepping motor, and the control unit may be two micro switches, which are arranged on the rotation track of the convex surface of the cam 343. When the cam 343 rotates, the convex surface contacts the micro switch to trigger; the rotation angle of the cam 343 can be accurately controlled by the cooperation of the two micro switches.

[0034] Since the viscosity of ink changes under different ambient temperatures, which can easily lead to unstable ink output, in order to ensure the stability of the ink output when the ambient temperature changes, the ink uniformity mechanism 3 of the present invention also adds a spacing adjustment component 35. The spacing adjustment component 35 is connected to the mounting bracket 31, and can adjust the spacing between the ink uniformity roller 32 and the ink roller 33 to adapt to the viscosity of the ink under different environments and ensure the stability of the ink output.

[0035] The spacing adjustment assembly 35 includes a fixed seat 351, an adjusting screw block 352, an adjusting bolt 353 and a fine-tuning block 354. The fixed seat 351 is connected to the mounting bracket 31, the adjusting screw block 352 is connected to the end of the rotating shaft of the ink uniforming roller 32, and the adjusting screw block 352 is provided with a screw hole matching the adjusting bolt 353 at one end facing the fixed seat 351, and a through hole is provided at a position corresponding to the screw hole on the fixed seat 351, and the connecting end of the adjusting bolt 353 passes through the through hole on the fixed seat 351 and is threadedly connected to the adjusting screw block 352; the fine-tuning block 354 is fixedly connected to the adjusting bolt 353 and rotates synchronously with the adjusting bolt 353. The adjusting bolt 353 is driven to rotate by rotating the fine-tuning block 354, thereby adjusting the depth of the connecting end of the adjusting bolt 353 in the adjusting screw block 352; since the fixing seat 351 cannot move, the adjusting screw block 352 will move with the rotation of the adjusting bolt 353, thereby driving the ink distribution roller 32 to move closer to or away from the ink roller 33, and finally achieving the adjustment of the ink output.

[0036] A return spring 355 is sleeved on the adjusting bolt 353, one end of the return spring 355 abuts against the fixing seat 351, and the other end abuts against the adjusting screw block 352. When the adjusting bolt 353 is screwed into the adjusting screw block 352, the return spring 355 will be compressed, and when the adjusting bolt 353 is screwed out in the opposite direction, the return spring 355 can assist the adjusting screw block 352 in resetting.

[0037] Since the fine-tuning block 354 is located inside the device and is not convenient to rotate, two pushing parts 3541 are radially extended at the upper and lower ends of the fine-tuning block 354. When adjustment is needed, just insert a slender tool such as a screwdriver into the gap on the side of the device, and press against one of the pushing parts 3541 to rotate and adjust the adjusting bolt 353.

[0038] The outer end surface of the pusher 3541 is provided with a tooth groove portion 3542, and the fixing seat 351 is provided with an elastic pin 356. The end surface of the tooth groove portion 3542 below the fine-tuning block 354 abuts against the elastic pin 356. The cooperation between the elastic pin 356 and the tooth groove portion 3542 can make the fine-tuning block 354 feel frustrated when rotating, which is convenient for users to make fine adjustments.

[0039] There are two groups of spacing adjustment components 35, which are respectively arranged on both sides of the ink uniforming mechanism 3, and the fine-tuning blocks 354 of the two groups of spacing adjustment components 35 have the same adjustment angle.

[0040] The present invention also includes an ink delivery component 4, which includes an oil pump bracket 41, an oil pump motor (not shown in the figure), an ink diversion pipe 42 and an ink box 43. The oil pump bracket 41 is connected to the frame 1, and the oil pump motor is fixedly installed on the oil pump bracket 41. The two ends of the oil pump motor are respectively connected to the ink diversion pipe 42 and the ink box 43 through oil delivery pipes, so as to transport the ink in the ink box 43 to the ink diversion pipe 42, and evenly inject the ink into the ink storage tank between the ink roller 32 and the ink roller 33 through the ink diversion pipe 42.

[0041] The ink distribution mechanism 3 further includes an infrared radiation sensor 38 connected to the mounting bracket 31, which is used to detect the ink level in the ink storage tank between the ink distribution roller 32 and the ink roller 33. The infrared radiation sensor 38 is electrically connected to the controller of the oil pump motor, and can control the delivery of ink according to the detected situation.

[0042] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A roller ink control and adjustment system, comprising a printing roller (2) rotatably connected to a frame (1), wherein an ink distribution mechanism (3) is provided inside the printing roller (2) for distributing ink to the printing roller (2); characterized in that: The ink distribution mechanism (3) comprises a mounting bracket (31), an ink distribution roller (32), an ink roller (33), a driving component (34) and a spacing adjustment component (35); the mounting bracket (31) is connected to the frame (1); the ink distribution roller (32) and the ink roller (33) are rotatably connected to the mounting bracket (31); the ink distribution roller (32) and the ink roller (33) are arranged parallel to each other, and an ink storage tank for accommodating ink is formed between the two; the driving component (34) is connected to the frame (1) and is used to push the mounting bracket (31) so that the outer peripheral wall of the ink roller (33) on the mounting bracket (31) abuts against the inner peripheral wall of the printing cylinder (2); the spacing adjustment component (35) is connected to the mounting bracket (31) and is used to adjust the spacing between the ink distribution roller (32) and the ink roller (33), thereby adjusting the ink output.

2. The drum ink control and adjustment system according to claim 1, characterized in that: The driving assembly (34) comprises a motor bracket (341), a driving motor (342) and a cam (343); the motor bracket (341) is fixedly mounted on the frame (1); the driving motor (342) is connected to the motor bracket (341); the cam (343) is connected to the output shaft of the driving motor (342); and the driving motor (342) is used to drive the cam (343) to rotate.

3. The drum ink control and adjustment system according to claim 2, characterized in that: The mounting bracket (31) is connected to a driving shaft (36) parallel to the ink distribution roller (32) and the ink roller (33); the driving shaft (36) is connected to a driving wheel (37); the wheel surface of the driving wheel (37) is used to abut against the convex surface of the cam (343).

4. The drum ink control and adjustment system according to claim 3 is characterized in that: The circuit of the driving motor (342) is also provided with a control unit for controlling the rotation angle of the cam (343).

5. The drum ink control and adjustment system according to claim 1, characterized in that: The spacing adjustment component (35) comprises a fixed seat (351), an adjusting screw block (352), an adjusting bolt (353) and a fine-tuning block (354); the fixed seat (351) is connected to the mounting bracket (31); the adjusting screw block (352) is connected to the end of the rotating shaft of the ink-distributing roller (32); and the adjusting screw block (352) is provided with a screw hole matching the adjusting bolt (353) at one end facing the fixed seat (351); a through hole is provided at a position corresponding to the screw hole on the fixed seat (351); the connecting end of the adjusting bolt (353) passes through the through hole on the fixed seat (351) and is threadedly connected to the adjusting screw block (352); the fine-tuning block (354) is fixedly connected to the adjusting bolt (353) and rotates synchronously with the adjusting bolt (353) in a circumferential direction.

6. The drum ink control and adjustment system according to claim 5, characterized in that: A return spring (355) is sleeved on the adjusting bolt (353), one end of the return spring (355) abuts against the fixing seat (351), and the other end of the return spring (355) abuts against the adjusting screw block (352).

7. The drum ink control and adjustment system according to claim 6, characterized in that: The upper and lower ends of the fine-tuning block (354) extend radially to form a pushing portion (3541).

8. The drum ink control and adjustment system according to claim 7, characterized in that: A tooth groove portion (3542) is provided on the outer end surface of the pushing portion (3541), and an elastic pin (356) is provided on the fixing seat (351), and the elastic pin (356) abuts against the end surface of one of the tooth groove portions (3542).

9. The drum ink control and adjustment system according to claim 9, characterized in that: The ink distribution mechanism (3) further comprises an infrared radiation sensor (38) connected to the mounting bracket (31) and used for detecting the ink liquid level of the ink storage tank between the ink distribution roller (32) and the ink roller (33).

10. The drum ink control and adjustment system according to claim 1, characterized in that: The invention also comprises an ink delivery assembly (4), wherein the ink delivery assembly (4) comprises an oil pump bracket (41), an oil pump motor, an ink shunt pipe (42) and an ink box (43); the oil pump bracket (41) is connected to the frame (1); the oil pump motor is fixedly mounted on the oil pump bracket (41); and two ends of the oil pump motor are respectively connected to the ink shunt pipe (42) and the ink box (43) through oil delivery pipes, so as to deliver the ink in the ink box (43) to the ink shunt pipe (42), and evenly inject the ink into the ink storage tank between the ink distribution roller (32) and the ink roller (33) through the ink shunt pipe (42).

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