Transmission device of digital rotary screen printer

Abstract

The invention belongs to the technical field of rotary screen printing machines, particularly relates to a transmission device of a digital rotary screen printing machine, and aims to solve the problem that a better coloring effect cannot be achieved through internal and external pressure difference in the existing rotary screen printing process. The top of the fixed side frame is provided with a rotary circular screen roller frame, one end of the circular screen roller frame is provided with a circular screen roller ring groove, the interior of the circular screen roller ring groove is provided with a rotary circular screen roller through a bearing, and the middle position of one end of the circular screen roller frame is fixedly provided with a scraper top frame through a bolt. In the rotary screen printing process, the two sealing rubber strips at the bottom of the scraper top frame make contact with the interior of the rotary screen roller, a sealed pressurizing cavity is formed in the rotary screen roller, then the interior of the pressurizing cavity is pressurized through the pressurizing air valve, color paste in the pressurizing cavity can permeate out of a nickel screen better, and the printing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rotary screen printing machines, and in particular to a transmission device of a digital rotary screen printing machine. Background Art

[0002] The rotary screen printing machine is a device that uses printing ink to transfer through anilox plates to print on a circular or curved surface. It is widely used in manufacturing, packaging, plastic products and other fields. During the printing process, the ink is injected into the cylinder from the central pipe of the screen cylinder by a special pump. The screen cylinder is equipped with a wedge-shaped scraper or scraper roller. When the screen cylinder rotates, the scraper or scraper roller squeezes the ink and prints it on the substrate through the mesh of the screen.

[0003] For example, the Chinese patent document with the publication number CN109466163A discloses a rotary screen printing machine including a frame and a bottom roller and a rotary screen arranged on the frame. Two rotary screen mounting mechanisms are arranged at both ends of the frame. The rotary screen mounting mechanism includes a rotary screen seat. A card block with a card slot is arranged on the rotary screen seat. A movable chuck is installed on the rotary screen seat. The movable chuck has a limit block, which is inserted into the card slot to fix the movable chuck. A rotary screen gear is installed in the movable chuck. The rotary screen printing machine disclosed in the above patent document has the following problems: in the printing process of the above rotary screen printing machine, the internal color paste of the rotary screen still relies on the action of the scraper to penetrate the color paste to the bottom of the nickel screen to color the material. In the process of coloring the color paste in the nickel screen by the scraper in the prior art, the pressure in the rotary screen is the same as that in the outside world. Therefore, the coloring of the color paste completely relies on the pressure of the scraper, and a better coloring effect cannot be achieved by the internal and external pressure difference. However, the prior art is not easy to solve such problems. Therefore, a transmission device of a digital rotary screen printing machine is urgently needed to solve the above problems. Summary of the invention

[0004] Based on the technical problem that the current rotary screen printing process cannot achieve a better coloring effect through the internal and external pressure difference, the present invention proposes a transmission device of a digital rotary screen printing machine.

[0005] The present invention provides a transmission device for a digital rotary screen printing machine, comprising a fixed component and a driving component, wherein the fixed component comprises a fixed side frame, a rotating rotary screen roller frame is installed on the top of the fixed side frame, a rotary screen roller ring groove is provided at one end of the rotary screen roller frame, a rotating rotary screen roller is installed inside the rotary screen roller ring groove through a bearing, a scraper top frame is fixed to the middle position of one end of the rotary screen roller frame through bolts, a horizontal adjustment component is installed at the bottom of the other end of the rotary screen roller frame, the driving component comprises a horizontally arranged fixed base, a driving chassis is installed on the top of the fixed base, three driving components distributed in a circumferential array are arranged at one end of the driving chassis, the driving component comprises a direct drive chassis slide groove provided on the driving component, a direct drive chassis is slidably installed inside the direct drive chassis slide groove, a direct drive motor is installed inside the direct drive chassis, and the output shaft of the direct drive motor extends to the outside and is not fixed with a direct drive motor gear, a rotary screen roller gear ring is fixed at one end of the rotary screen roller, and three direct drive motor gears are meshed with the inside of the rotary screen roller gear ring; Both sides of the bottom of the round screen roller frame are provided with sealing strip lifting frame slide grooves, and the sealing strip lifting frame slide grooves are slidably installed with vertically lifting sealing strip lifting frames, and the bottoms of the two sealing strip lifting frames are fixed with sealing strips, and the bottoms of the two sealing strips are in contact with the inner wall of the round screen roller; A pressurized chamber is formed between the two sealing strip lifting frames and the inner wall of the round screen roller, and a pressurized air valve is installed at the bottom of the scraper top frame, and the air outlet end of the pressurized air valve faces the pressurized chamber at the bottom.

[0006] Preferably, a fixed side frame mounting seat is fixed to the top of the fixed side frame, a round screen roller frame mounting seat is fixed to the top of the round screen roller frame, and the fixed side frame mounting seat and the round screen roller frame mounting seat are rotatably mounted via an axle rod.

[0007] Preferably, the horizontal adjustment assembly includes an adjusting threaded rod installed through a bearing at the bottom of the round screen roller frame, the external threaded sleeve of the adjusting threaded rod is provided with an adjusting threaded rod seat, the adjusting threaded rod seat is fixed with a rubber support seat by bolts, the end of the adjusting threaded rod is fixed with an adjusting threaded rod end cap, and the adjusting threaded rod end cap is located in the middle position between the adjusting threaded rod seat and the rubber support seat.

[0008] Preferably, a vertical scraper lifting frame slide groove is opened in the middle position of the bottom of the scraper top frame, a vertically lifting scraper lifting frame is slidably installed inside the scraper lifting frame slide groove, a scraper is fixed to the bottom of the scraper lifting frame, and an electric push rod is installed between the top of the scraper lifting frame and the top inner wall of the scraper lifting frame slide groove.

[0009] Preferably, a return spring is fixed between the top of the scraper lifting frame and the inner wall of the scraper lifting frame slide groove and between the sealing strip lifting frame and the inner wall of the sealing strip lifting frame slide groove, and the return spring at the top of the scraper lifting frame is installed in a sleeve with the electric push rod.

[0010] Preferably, a direct-drive chassis slide end plate is fixed to the bottom of the direct-drive chassis slide, an adjusting screw is installed between the top of the direct-drive chassis slide and the direct-drive chassis slide end plate through a bearing, a threaded sleeve is installed between the direct-drive chassis and the adjusting screw, a driven bevel gear is fixed to the bottom of the adjusting screw, a motor cavity is opened in the middle position of the drive chassis, a drive chassis end plate is fixed to the end of the motor cavity, a drive motor is fixed to the middle position of the motor cavity, a drive bevel gear is fixed to the output shaft of the drive motor, and the drive bevel gear is meshed with three driven bevel gears.

[0011] Preferably, a scraper frame end cover is fixed to one end of the scraper top frame by bolts, and a scraper frame end cover bearing is installed at a circumferential position of the scraper frame end cover.

[0012] Preferably, two drive chassis slide grooves are provided on the top of the fixed base, two drive chassis slide seats are provided on the bottom of the drive chassis, and the two drive chassis slide seats are slidably installed between the two drive chassis slide grooves respectively.

[0013] The beneficial effects of the present invention are: 1. The transmission device of the digital rotary screen printing machine, during the rotary screen printing process, the two sealing strips at the bottom of the scraper top frame contact the inside of the rotary screen roller and form a sealed pressurized chamber inside. The pressurized chamber is then pressurized through the pressurized air valve, so that the internal color paste can better penetrate the nickel screen and improve the printing effect.

[0014] 2. The transmission device of the digital rotary screen printing machine manually fine-tunes the rotation of the end cap of the threaded rod to rotate the adjusting threaded rod, and fine-adjusts the position of the rotary screen roller frame to the horizontal state of the rotary screen roller to fit the bottom fabric.

[0015] 3. The transmission device of the digital rotary screen printing machine has three direct drive motor gears that are far away from each other and mesh with the rotary screen roller gear ring. The rotary screen roller is directly driven by the internal direct drive motor to ensure direct power output. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the position of one end of the overall structure of a transmission device of a digital rotary screen printing machine proposed by the present invention; Figure 2 A schematic diagram of the position of the other end of the overall structure of a transmission device of a digital rotary screen printing machine proposed by the present invention; Figure 3A schematic diagram of the position structure of fixed components of a transmission device of a digital rotary screen printing machine proposed by the present invention; Figure 4 A schematic diagram of the position structure of a driving component of a transmission device of a digital rotary screen printing machine proposed by the present invention; Figure 5 A partial cross-sectional schematic diagram of the position structure of a driving component of a transmission device of a digital rotary screen printing machine proposed by the present invention; Figure 6 A schematic diagram of the structure of a rotary screen roller replacement state of a transmission device of a digital rotary screen printing machine proposed by the present invention; Figure 7 A transmission device for a digital rotary screen printing machine proposed by the present invention Figure 6 A schematic diagram of the enlarged structure of part A; Figure 8 The present invention provides a schematic structural diagram of a scraper mechanism of a transmission device of a digital rotary screen printing machine.

[0017] In the figure: 1, round screen roller frame; 2, fixed side frame; 3, round screen roller; 4, scraper frame end cover; 5, drive chassis; 6, drive chassis end plate; 7, fixed base; 8, drive chassis slide; 9, drive assembly; 10, round screen roller ring groove; 11, scraper top frame; 12, fixed side frame mounting seat; 13, round screen roller frame mounting seat; 14, scraper lifting frame; 15, scraper; 16, sealing strip; 17, sealing strip lifting frame; 18, direct drive chassis; 19, direct drive chassis slide; 20, direct Drive motor gear; 21. Round screen roller gear ring; 22. Scraper frame end cover bearing; 23. Driven bevel gear; 24. Drive bevel gear; 25. Drive motor; 26. Adjustment screw; 27. Direct drive chassis slide end plate; 28. Adjustment threaded rod; 29. ​​Adjustment threaded rod seat; 30. Rubber support seat; 31. Adjustment threaded rod end cap; 32. Scraper lifting frame slide; 33. Sealing strip lifting frame slide; 34. Electric push rod; 35. Return spring; 36. Pressurization chamber; 37. Pressurization air valve. DETAILED DESCRIPTION

[0018] Reference Figure 1-Figure 8A transmission device of a digital rotary screen printing machine includes a fixed component and a driving component. The fixed component includes a fixed side frame 2. A rotating rotary screen roller frame 1 is installed on the top of the fixed side frame 2. A rotary screen roller ring groove 10 is opened at one end of the rotary screen roller frame 1. A rotating rotary screen roller 3 is installed inside the rotary screen roller ring groove 10 through a bearing. A scraper top frame 11 is fixed to the middle position of one end of the rotary screen roller frame 1 through bolts. A horizontal adjustment component is installed at the bottom of the other end of the rotary screen roller frame 1. The driving component includes a horizontally arranged fixed base 7. The fixed base 7 A driving chassis 5 is installed on the top, and one end of the driving chassis 5 is provided with three driving components 9 distributed in a circumferential array, the driving component 9 includes a direct-drive chassis chute 19 provided on the driving component 9, a direct-drive chassis 18 is slidably installed inside the direct-drive chassis chute 19, a direct-drive motor is installed inside the direct-drive chassis 18, and the output shaft of the direct-drive motor extends to the outside and is not fixed with a direct-drive motor gear 20, a cylinder roller gear ring 21 is fixed at one end of the cylinder roller 3, and the three direct-drive motor gears 20 are meshed with the inside of the cylinder roller gear ring 21; Sealing strip lifting frame slide grooves 33 are provided on both sides of the bottom of the round screen roller frame 1. A sealing strip lifting frame 17 for vertical lifting is slidably installed inside the sealing strip lifting frame slide grooves 33. Sealing strips 16 are fixed to the bottom of the two sealing strip lifting frames 17. The bottoms of the two sealing strips 16 are in contact with the inner wall of the round screen roller 3. A pressurized chamber 36 is formed between the two sealing strip lifting frames 17 and the inner wall of the round screen roller 3. A pressurized air valve 37 is installed at the bottom of the scraper top frame 11, and the air outlet end of the pressurized air valve 37 faces the pressurized chamber 36 at the bottom.

[0019] Furthermore, a fixed side frame mounting seat 12 is fixed to the top of the fixed side frame 2, a round screen roller frame mounting seat 13 is fixed to the top of the round screen roller frame 1, and the fixed side frame mounting seat 12 and the round screen roller frame mounting seat 13 are rotatably mounted via an axle rod.

[0020] Furthermore, the horizontal adjustment assembly includes an adjusting threaded rod 28 installed through a bearing at the bottom of the round screen roller frame 1, an external threaded sleeve of the adjusting threaded rod 28 is provided with an adjusting threaded rod seat 29, the adjusting threaded rod seat 29 is fixed with a rubber support seat 30 by bolts, and an adjusting threaded rod end cap 31 is fixed to the end of the adjusting threaded rod 28, and the adjusting threaded rod end cap 31 is located in the middle position between the adjusting threaded rod seat 29 and the rubber support seat 30.

[0021] Furthermore, a vertical scraper lifting frame slot 32 is provided in the middle of the bottom of the scraper top frame 11, and a vertically lifting scraper lifting frame 14 is slidably installed inside the scraper lifting frame slot 32. A scraper 15 is fixed to the bottom of the scraper lifting frame 14, and an electric push rod 34 is installed between the top of the scraper lifting frame 14 and the top inner wall of the scraper lifting frame slot 32.

[0022] Furthermore, a return spring 35 is fixed between the top of the scraper lifting frame 14 and the inner wall of the scraper lifting frame slide groove 32 and between the sealing strip lifting frame 17 and the inner wall of the sealing strip lifting frame slide groove 33, and the return spring 35 at the top of the scraper lifting frame 14 is installed in a sleeve with the electric push rod 34.

[0023] Furthermore, a direct-drive chassis slide slot end plate 27 is fixed to the bottom of the direct-drive chassis slide slot 19, an adjusting screw 26 is installed between the top of the direct-drive chassis slide slot 19 and the direct-drive chassis slide slot end plate 27 through a bearing, a threaded sleeve is installed between the direct-drive chassis 18 and the adjusting screw 26, a driven bevel gear 23 is fixed to the bottom of the adjusting screw 26, a motor cavity is opened in the middle position of the drive chassis 5, a drive chassis end plate 6 is fixed to the end of the motor cavity, a drive motor 25 is fixed to the middle position of the motor cavity, a drive bevel gear 24 is fixed to the output shaft of the drive motor 25, and the drive bevel gear 24 is meshed with the three driven bevel gears 23.

[0024] Furthermore, a scraper frame end cover 4 is fixed to one end of the scraper top frame 11 by bolts, and a scraper frame end cover bearing 22 is installed at a circumferential position of the scraper frame end cover 4.

[0025] Furthermore, two drive chassis slide grooves 8 are provided on the top of the fixed base 7, and two drive chassis slide seats are provided on the bottom of the drive chassis 5, and the two drive chassis slide seats are slidably installed between the two drive chassis slide grooves 8 respectively.

[0026] When the present invention is used: when using the transmission device of the rotary screen printing machine, the device needs to be installed first, the fixed side frame 2 is installed at one side position of the conveyor belt, and the fixed base 7 is installed at the corresponding position on the other side of the conveyor belt. When installing the rotary screen roller 3, the scraper top frame 11 is manually lifted to make the scraper top frame 11 tilt up, and the rotary screen roller 3 is inserted along the direction of the scraper top frame 11. One end of the rotary screen roller 3 is inserted into the rotary screen roller ring groove 10 on the rotary screen roller frame 1 and installed through the bearing. After the rotary screen roller 3 is inserted, the scraper frame end cover 4 is bolted to the scraper top frame 11, and the installation of the rotary screen roller 3 is completed; when the rotary screen roller 3 is adjusted horizontally, the rotary screen roller 3 is lowered to a horizontal state, and the rotation of the manual fine-tuning adjustment threaded rod end cap 31 is rotated to rotate the adjustment threaded rod 28 to adjust the position of the rotary screen roller frame 1 The position is fine-tuned to the horizontal state of the round screen roller 3 to fit the fabric at the bottom; in the process of direct drive by the direct drive motor, the drive chassis 5 is pushed to one end close to the round screen roller 3, and the drive motor 25 drives the three direct drive motor gears 20 at the circumferential position to move closer to the middle. When the position is inserted into the interior of the round screen roller 3, the three direct drive motor gears 20 are controlled to move away from each other and mesh with the round screen roller gear ring 21. The round screen roller 3 is directly driven by the internal direct drive motor to ensure direct power output; in the process of round screen printing, the two sealing strips 16 at the bottom of the scraper top frame 11 are in contact with the interior of the round screen roller 3, and a sealed pressurized chamber 36 is formed inside, and then the pressurized air valve 37 is used to pressurize the pressurized chamber 36, so that the internal color paste can better penetrate the nickel mesh, thereby improving the printing effect.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A transmission device for a digital rotary screen printing machine, comprising a fixing component and a driving component, characterized in that: The fixed assembly comprises a fixed side frame (2), a rotating round screen roller frame (1) is installed on the top of the fixed side frame (2), a round screen roller ring groove (10) is opened at one end of the round screen roller frame (1), a rotating round screen roller (3) is installed inside the round screen roller ring groove (10) via a bearing, a scraper top frame (11) is fixed to the middle position of one end of the round screen roller frame (1) via bolts, a horizontal adjustment assembly is installed at the bottom of the other end of the round screen roller frame (1), and the driving assembly comprises a horizontally arranged fixed base (7), a driving chassis (5) is installed on the top of the fixed base (7), One end of the driving chassis (5) is provided with three driving components (9) distributed in a circumferential array, the driving component (9) includes a direct-drive chassis slideway (19) provided on the driving component (9), a direct-drive chassis (18) is slidably mounted inside the direct-drive chassis slideway (19), a direct-drive motor is mounted inside the direct-drive chassis (18), and an output shaft of the direct-drive motor extends to the outside and is not fixed with a direct-drive motor gear (20), a cylinder screen roller gear ring (21) is fixed at one end of the cylinder screen roller (3), and the three direct-drive motor gears (20) are meshed with the inside of the cylinder screen roller gear ring (21); Both sides of the bottom of the round screen roller frame (1) are provided with sealing strip lifting frame slide grooves (33), and a sealing strip lifting frame (17) for vertical lifting is slidably installed inside the sealing strip lifting frame slide grooves (33), and sealing strips (16) are fixed at the bottom of the two sealing strip lifting frames (17), and the bottoms of the two sealing strips (16) are in contact with the inner wall of the round screen roller (3); A pressurized chamber (36) is formed between the two sealing strip lifting frames (17) and the inner wall of the round screen roller (3), and a pressurized air valve (37) is installed at the bottom of the scraper top frame (11), and the air outlet end of the pressurized air valve (37) faces the pressurized chamber (36) at the bottom.

2. The transmission device of a digital rotary screen printing machine according to claim 1, characterized in that: A fixed side frame mounting seat (12) is fixed on the top of the fixed side frame (2), a round screen roller frame mounting seat (13) is fixed on the top of the round screen roller frame (1), and the fixed side frame mounting seat (12) and the round screen roller frame mounting seat (13) are rotatably mounted via a shaft.

3. The transmission device of a digital rotary screen printing machine according to claim 1, characterized in that: The horizontal adjustment assembly comprises an adjusting threaded rod (28) mounted at the bottom of the round screen roller frame (1) through a bearing, an external threaded sleeve of the adjusting threaded rod (28) is provided with an adjusting threaded rod seat (29), the adjusting threaded rod seat (29) is fixed with a rubber support seat (30) through bolts, an adjusting threaded rod end cap (31) is fixed at the end of the adjusting threaded rod (28), and the adjusting threaded rod end cap (31) is located in the middle of the adjusting threaded rod seat (29) and the rubber support seat (30).

4. The transmission device of a digital rotary screen printing machine according to claim 1, characterized in that: A vertical scraper lifting frame slide groove (32) is provided in the middle of the bottom of the scraper top frame (11), a vertically lifting scraper lifting frame (14) is slidably mounted inside the scraper lifting frame slide groove (32), a scraper (15) is fixed at the bottom of the scraper lifting frame (14), and an electric push rod (34) is mounted between the top of the scraper lifting frame (14) and the top inner wall of the scraper lifting frame slide groove (32).

5. The transmission device of a digital rotary screen printing machine according to claim 4, characterized in that: A return spring (35) is fixed between the top of the scraper lifting frame (14) and the inner wall of the scraper lifting frame slide groove (32) and between the sealing strip lifting frame (17) and the inner wall of the sealing strip lifting frame slide groove (33), and the return spring (35) at the top of the scraper lifting frame (14) is installed in a sleeve-type manner with the electric push rod (34).

6. The transmission device of a digital rotary screen printing machine according to claim 1, characterized in that: A direct-drive chassis slide slot end plate (27) is fixed to the bottom of the direct-drive chassis slide slot (19); an adjusting screw rod (26) is installed between the top of the direct-drive chassis slide slot (19) and the direct-drive chassis slide slot end plate (27) via a bearing; a threaded sleeve is installed between the direct-drive chassis (18) and the adjusting screw rod (26); a driven bevel gear (23) is fixed to the bottom of the adjusting screw rod (26); a motor cavity is opened in the middle of the drive chassis (5); a drive chassis end plate (6) is fixed to the end of the motor cavity; a drive motor (25) is fixed to the middle of the motor cavity; a drive bevel gear (24) is fixed to the output shaft of the drive motor (25); and the drive bevel gear (24) is meshed with the three driven bevel gears (23).

7. The transmission device of a digital rotary screen printing machine according to claim 1, characterized in that: A scraper frame end cover (4) is fixed to one end of the scraper top frame (11) via bolts, and a scraper frame end cover bearing (22) is installed at a circumferential position of the scraper frame end cover (4).

8. The transmission device of a digital rotary screen printing machine according to claim 1, characterized in that: Two drive chassis slide grooves (8) are provided on the top of the fixed base (7), and two drive chassis slide seats are provided on the bottom of the drive chassis (5), and the two drive chassis slide seats are slidably mounted between the two drive chassis slide grooves (8) respectively.

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