A round flat surface rotary printing machine

Abstract

The utility model relates to printing machine technical field especially is a kind of round plane rotary printing machine, including machine table, mobile drive mechanism, first lifting drive mechanism, fixture, two frame bodies, visual positioning device and rotary printing device, the top surface of fixture is equipped with bearing cavity, rotary printing device includes position adjusting mechanism, portal frame, rotary drive mechanism, rotary seat, the second lifting drive mechanism of rotary seat, the scraping mechanism of lifting end of second lifting drive mechanism, the scraping knife of being arranged in scraping mechanism and the screen plate assembly of being installed between two frame bodies, scraping knife is located eccentric position of rotary seat, the inner endpoint of scraping knife is on the rotation axis of rotary seat, the length of scraping knife is equal to the radius of the round plane of workpiece carried by bearing cavity.The application can directly draw circle printing to the round plane of workpiece, and the efficiency of printing is high and quality is good, without using shielding piece to shield the non-printing surface of workpiece, not easy to cause the waste of ink.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, and in particular to a rotary printing press for circular planes. Background Technology

[0002] In screen printing, a screen printing plate with a shape identical to the image to be printed is typically designed. That is, for the surface to be printed, a screen with the desired pattern is used, and a squeegee (manipulator) presses the screen to apply the print. However, for printing on the circular surface of a workpiece, existing technology generally uses a masking element to block the non-printing areas, exposing only the circular surface. The squeegee then works in conjunction with the screen to print on the circular surface. This printing method requires an additional masking element to cover the non-printing areas, and the squeegee moves across the masking element, causing ink to adhere to it, increasing ink consumption, wasting ink, and raising printing costs. Therefore, the drawbacks are significant, and a solution is urgently needed. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a circular plane rotary printing machine.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A circular planar rotary printing machine includes a machine base, a moving drive mechanism mounted on the machine base, a first lifting drive mechanism mounted on the moving end of the moving drive mechanism, a fixture mounted on the lifting end of the first lifting drive mechanism, two frames parallel and oppositely mounted on the top surface of the machine base, a visual positioning device mounted on one side of one frame and located above the moving drive mechanism, and a rotary printing device mounted on the two frames and located above the moving drive mechanism. The top surface of the fixture is provided with a bearing cavity. The rotary printing device includes a position adjustment mechanism mounted on the two frames, a gantry mounted on the adjustment end of the position adjustment mechanism, and a rotation drive mechanism mounted on the gantry. The system comprises a rotating seat mounted on the rotating end of a rotating drive mechanism, a second lifting drive mechanism mounted on the rotating seat, a doctor blade mounted on the lifting end of the second lifting drive mechanism, a doctor blade mounted on the doctor blade mechanism, and a screen assembly mounted between two frames. The doctor blade is located at an eccentric position on the rotating seat, and the inner end point of the doctor blade is on the rotation axis of the rotating seat. The screen assembly is located between the doctor blade and the fixture. The first lifting drive mechanism is used to drive the fixture closer to or away from the screen assembly, and the second lifting drive mechanism is used to drive the doctor blade of the doctor blade mechanism closer to or away from the screen assembly. The length of the doctor blade is equal to the radius of the circular plane of the workpiece carried by the bearing cavity.

[0005] Furthermore, the bottom wall of the bearing cavity is provided with multiple suction holes.

[0006] Furthermore, the inner walls of both frames are equipped with screen assembly / disassembly structures, and the two ends of the screen assembly are respectively mounted on the two screen assembly / disassembly structures.

[0007] Furthermore, the screen assembly / disassembly structure includes a support plate disposed on the inner side wall of the frame, a fixing plate disposed on the inner side wall of the frame and located above the support plate, and a locking mechanism installed on the fixing plate. The screen assembly can move along the support plate to below the fixing plate, and the locking mechanism is used to lock the screen assembly on the support plate.

[0008] Furthermore, the locking mechanism includes a locking cylinder mounted on the fixed plate and a locking pressure block mounted on the piston rod of the locking cylinder and located below the fixed plate. The locking cylinder is used to drive the locking pressure block to move closer to or away from the support plate.

[0009] Furthermore, the lifting end of the first lifting drive mechanism is provided with an adjustment plate, and a fixture is mounted on the adjustment plate, which can be adjusted in position on the adjustment plate.

[0010] Furthermore, the visual positioning device includes two sets of CCD visual positioning mechanisms, which are arranged opposite to each other.

[0011] Furthermore, a spacing adjustment mechanism is installed on one side of a frame. Each of the two adjustment ends of the spacing adjustment mechanism is equipped with an adjustment seat. The spacing adjustment mechanism is used to adjust the spacing between the two adjustment seats. Two sets of CCD vision positioning mechanisms are respectively installed on the two adjustment seats. The CCD vision positioning mechanisms can move closer to or further away from the frame on the adjustment seats. The CCD vision positioning mechanisms are locked on the adjustment seats by fasteners.

[0012] Furthermore, the screen assembly includes a screen frame and a screen detachably mounted on the screen frame, the sides of which can be inserted between a support plate and a fixing plate.

[0013] Furthermore, each of the two opposite sides of the frame is recessed with an installation cavity, and the two ends of the screen are respectively installed in the two installation cavities.

[0014] The beneficial effects of this utility model are as follows: In practical applications, the moving drive mechanism drives the fixture to move to the loading and unloading positions. External equipment or manual labor places the disc into the bearing cavity of the fixture, which positions and supports the disc. Then, the moving drive mechanism drives the fixture and the disc to move below the visual positioning device. The visual positioning device performs visual positioning and shape detection on the disc. The position adjustment mechanism adjusts the position of the gantry according to the visual detection results of the visual positioning device, thereby adjusting the position of the doctor blade. Then, the moving drive mechanism drives the fixture and the disc to move to the printing position, so that the disc is located below the screen assembly, and the inner end point of the doctor blade is on the same vertical line as the center of the disc. Then, the first lifting drive mechanism drives the fixture and the disc to rise until the disc reaches the printing plane. The first lifting drive mechanism lowers the doctor blade of the screen assembly until it contacts the bottom surface of the screen. Simultaneously, the second lifting drive mechanism lowers the doctor blade until it contacts the top surface of the screen. Then, the rotation drive mechanism rotates the rotating seat, causing the doctor blade to rotate 360°. The rotating doctor blade prints ink from the screen assembly onto the circular plane of the disc, achieving circular printing. After printing, the rotation drive mechanism stops the rotating seat from rotating, the second lifting drive mechanism raises the doctor blade and resets it, the first lifting drive mechanism lowers the fixture and resets it, and the moving drive mechanism moves the fixture, along with the printed disc, to the loading / unloading position. External equipment or operators can then remove the printed disc and place the disc to be printed into the fixture's carrying cavity. This invention can directly perform circular printing on the circular plane of a workpiece, resulting in high printing efficiency and quality. It eliminates the need for masking components to cover the non-printing surfaces of the workpiece, reducing ink waste. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the concealed outer cover of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the hidden position adjustment mechanism and screen assembly of the rotary printing device of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the mobile drive mechanism, the first lifting drive mechanism, the adjustment plate, and the fixture of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the visual positioning device, adjustment seat, and spacing adjustment mechanism of this utility model.

[0020] Figure 6 This is a three-dimensional structural diagram of the screen printing assembly of this utility model.

[0021] Figure 7 This is a three-dimensional structural diagram of the frame, position adjustment mechanism, screen assembly, and screen disassembly / assembly structure of this utility model.

[0022] Explanation of reference numerals in the attached figures: 1. Machine base; 2. Moving drive mechanism; 3. First lifting drive mechanism; 4. Fixture; 5. Frame; 6. Vision positioning device; 7. Rotary printing device; 8. Bearing cavity; 9. Position adjustment mechanism; 10. Gantry frame; 11. Rotation drive mechanism; 12. Rotary seat; 13. Second lifting drive mechanism; 14. Doctor blade mechanism; 15. Doctor blade; 16. Screen assembly; 17. Screen assembly / disassembly structure; 18. Support plate; 19. Fixing plate; 20. Locking mechanism; 21. Locking cylinder; 22. Locking pressure block; 23. Adjusting plate; 24. CCD vision positioning mechanism; 25. Spacing adjustment mechanism; 26. Adjusting seat; 27. Screen frame; 28. Screen; 29. ​​Mounting cavity; 30. Outer cover; 31. Disc. Detailed Implementation To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0023] like Figures 1 to 7 As shown, this utility model provides a circular flat rotary printing machine, which includes a machine base 1, a moving drive mechanism 2 mounted on the machine base 1, a first lifting drive mechanism 3 mounted on the moving end of the moving drive mechanism 2, a fixture 4 mounted on the lifting end of the first lifting drive mechanism 3, two frames 5 parallel and oppositely mounted on the top surface of the machine base 1, a visual positioning device 6 mounted on one side of one frame 5 and located above the moving drive mechanism 2, and a rotary printing device 7 mounted on the two frames 5 and located above the moving drive mechanism 2. The top surface of the fixture 4 is provided with a bearing cavity 8. The rotary printing device 7 includes a position adjustment mechanism 9 mounted on the two frames 5, a gantry frame 10 mounted on the adjustment end of the position adjustment mechanism 9, a rotation drive mechanism 11 mounted on the gantry frame 10, and a rotation drive mechanism 11 mounted on the two frames 5. The rotating drive mechanism 11 includes a rotating seat 12 at its rotating end, a second lifting drive mechanism 13 mounted on the rotating seat 12, a doctor blade mechanism 14 mounted on the lifting end of the second lifting drive mechanism 13, a doctor blade 15 disposed on the doctor blade mechanism 14, and a screen assembly 16 mounted between the two frames 5. The doctor blade 15 is located at an eccentric position on the rotating seat 12, and its inner end point is on the rotation axis of the rotating seat 12. The screen assembly 16 is located between the doctor blade 15 and the fixture 4. The first lifting drive mechanism 3 drives the fixture 4 to move closer to or away from the screen assembly 16, and the second lifting drive mechanism 13 drives the doctor blade 15 of the doctor blade mechanism 14 to move closer to or away from the screen assembly 16. The length of the doctor blade 15 is equal to the radius of the circular plane of the workpiece carried by the bearing cavity 8. Preferably, the workpiece is a disc 31.

[0024] In practical applications, the moving drive mechanism 2 drives the fixture 4 to move to the loading / unloading position. External equipment or manual labor places the disc 31 into the bearing cavity 8 of the fixture 4. The bearing cavity 8 positions and supports the disc 31. Then, the moving drive mechanism 2 drives the fixture 4, along with the disc 31, to move below the visual positioning device 6. The visual positioning device 6 performs visual positioning and shape detection on the disc 31. The position adjustment mechanism 9 adjusts the position of the gantry 10 according to the visual detection results of the visual positioning device 6, thereby adjusting the position of the doctor blade 15. Then, the moving drive mechanism 2 drives the fixture 4, along with the disc 31, to move to the printing position, so that the disc 31 is located below the screen assembly 16, and the inner end point of the doctor blade 15 is on the same vertical line as the center of the disc 31. Then, the first lifting drive mechanism 3 drives the fixture 4, along with the disc 31, to rise until the printing plane of the disc 31 is aligned with the screen of the screen assembly 16. The bottom surface of the screen 28 contacts the screen. At the same time, the second lifting drive mechanism 13 drives the doctor blade 14 to descend until the doctor blade 15 on the doctor blade 14 contacts the top surface of the screen 28 of the screen assembly 16. Then, the rotation drive mechanism 11 drives the rotating seat 12 to rotate. The rotating seat 12 drives the doctor blade 15 to rotate 360°. The rotating doctor blade 15 prints the ink on the screen assembly 16 onto the circular plane of the disc 31 to achieve circular printing. After printing is completed, the rotation drive mechanism 11 stops driving the rotating seat 12 to rotate. The second lifting drive mechanism 13 drives the doctor blade 14 to rise and reset. The first lifting drive mechanism 3 drives the fixture 4 to descend and reset. The moving drive mechanism 2 drives the fixture 4, along with the printed disc 31, to move to the upper and lower material positions. External equipment or operators can then remove the printed disc 31 and place the disc 31 to be printed into the bearing cavity 8 of the fixture 4. This invention enables direct circular printing on the circular plane of a workpiece, resulting in high printing efficiency and quality. It eliminates the need for masking components to cover the non-printing surfaces of the workpiece, thus minimizing ink waste.

[0025] In this embodiment, the bottom wall of the bearing cavity 8 is provided with multiple suction holes. In practical applications, after the workpiece is placed in the bearing cavity 8, the multiple suction holes will hold the workpiece firmly in the bearing cavity 8, thereby improving the positional accuracy and stability of the workpiece.

[0026] In this embodiment, the inner sidewalls of both frames 5 are provided with screen assembly / disassembly structures 17, and both ends of the screen assembly 16 are respectively mounted on the two screen assembly / disassembly structures 17. This structural design facilitates the assembly / disassembly and maintenance of the screen assembly 16.

[0027] In this embodiment, the screen assembly / disassembly structure 17 includes a support plate 18 disposed on the inner side wall of the frame 5, a fixing plate 19 disposed on the inner side wall of the frame 5 and located above the support plate 18, and a locking mechanism 20 installed on the fixing plate 19. The screen assembly 16 can move along the support plate 18 to below the fixing plate 19, and the locking mechanism 20 is used to lock the screen assembly 16 onto the support plate 18.

[0028] In practical applications, when assembling the screen printing assembly 16, it is pushed laterally to move along the support plate 18 to below the fixing plate 19. Once the screen printing assembly 16 is in place, the locking mechanism 20 locks it onto the support plate 18. When it is necessary to disassemble the screen printing assembly 16, the locking mechanism 20 releases the assembly, and the assembly is pulled out laterally. This structural design makes disassembly and replacement of the screen printing assembly 16 convenient.

[0029] In this embodiment, the locking mechanism 20 includes a locking cylinder 21 mounted on the fixed plate 19 and a locking block 22 mounted on the piston rod of the locking cylinder 21 and located below the fixed plate 19. The locking cylinder 21 is used to drive the locking block 22 to move closer to or away from the support plate 18. In practical applications, the screen assembly 16 is pushed laterally, causing the screen assembly 16 to move along the support plate 18 to below the fixed plate 19. When the screen assembly 16 moves into position, the piston rod of the locking cylinder 21 extends and drives the locking block 22 to move downward. The downward-moving locking block 22 presses the side of the screen assembly 16 against the support plate 18 to achieve locking of the screen assembly 16.

[0030] In this embodiment, the lifting end of the first lifting drive mechanism 3 is provided with an adjustment plate 23, and the fixture 4 is mounted on the adjustment plate 23. The fixture 4 can be adjusted in position on the adjustment plate 23. During adjustment, by adjusting the position of the fixture 4 on the adjustment plate 23, the relative position of the fixture 4 and the doctor blade 15 is adjusted, which is beneficial for the inner end point of the doctor blade 15 to coincide with the center of the circular plane of the workpiece carried by the bearing cavity 8.

[0031] In this embodiment, the visual positioning device 6 includes two sets of CCD visual positioning mechanisms 24, which are arranged opposite to each other. By using the two sets of CCD visual positioning mechanisms 24 to perform visual positioning and shape detection on the workpiece carried in the bearing cavity 8, the accuracy and precision of visual positioning and shape detection are improved.

[0032] In this embodiment, a spacing adjustment mechanism 25 is installed on one side (outer side) of a frame 5. Each of the two adjustment ends of the spacing adjustment mechanism 25 is equipped with an adjustment seat 26. The spacing adjustment mechanism 25 is used to adjust the spacing between the two adjustment seats 26. Two sets of CCD vision positioning mechanisms 24 are respectively installed on the two adjustment seats 26. The CCD vision positioning mechanisms 24 can move closer to or further away from the frame 5 on the adjustment seats 26. The CCD vision positioning mechanisms 24 are locked to the adjustment seats 26 by fasteners. In practical applications, the spacing adjustment mechanism 25 can adjust the spacing between the two sets of CCD vision positioning mechanisms 24, and the CCD vision positioning mechanisms 24 can be positioned on the adjustment seats 26 to meet the requirements for visual positioning and external inspection of the circular plane of workpieces of different specifications.

[0033] In this embodiment, the screen printing assembly 16 includes a screen frame 27 and a screen 28 detachably mounted on the screen frame 27. The side of the screen frame 27 can be inserted between the support plate 18 and the fixing plate 19. This structural design realizes the modularity of the screen printing assembly 16, which facilitates the assembly and disassembly of the screen printing assembly 16.

[0034] In this embodiment, mounting cavities 29 are recessed on both opposite sides of the frame 27, and the two ends of the screen 28 are respectively installed in the two mounting cavities 29. Different screens 28 can be replaced according to the specifications and size of the circular plane of different workpieces to meet different printing requirements.

[0035] Specifically, the top surfaces of the two frames 5 are rotatably connected to an outer cover 30, and the gantry frame 10 is located inside the outer cover 30.

[0036] All technical features in this embodiment can be freely combined according to actual needs.

[0037] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A circular flatbed rotary printing machine, characterized in that: The device includes a machine base (1), a moving drive mechanism (2) mounted on the machine base (1), a first lifting drive mechanism (3) mounted on the moving end of the moving drive mechanism (2), a fixture (4) mounted on the lifting end of the first lifting drive mechanism (3), two frames (5) mounted parallel and opposite to each other on the top surface of the machine base (1), a visual positioning device (6) mounted on one side of one frame (5) and located above the moving drive mechanism (2), and a rotary printing device (7) mounted on the two frames (5) and located above the moving drive mechanism (2). The top surface of the fixture (4) is provided with a bearing cavity (8). The rotary printing device (7) includes a position adjustment mechanism (9) mounted on the two frames (5), a gantry frame (10) mounted on the adjustment end of the position adjustment mechanism (9), a rotation drive mechanism (11) mounted on the gantry frame (10), and a rotation drive mechanism (11) mounted on the rotation drive mechanism (11). The rotating seat (12) at one end, the second lifting drive mechanism (13) installed on the rotating seat (12), the doctor blade mechanism (14) installed on the lifting end of the second lifting drive mechanism (13), the doctor blade (15) installed on the doctor blade mechanism (14), and the screen assembly (16) installed between the two frames (5). The doctor blade (15) is located at an eccentric position on the rotating seat (12), and the inner end of the doctor blade (15) is on the rotation axis of the rotating seat (12). The screen assembly (16) is located between the doctor blade (15) and the fixture (4). The first lifting drive mechanism (3) is used to drive the fixture (4) to move closer to or away from the screen assembly (16). The second lifting drive mechanism (13) is used to drive the doctor blade (15) of the doctor blade mechanism (14) to move closer to or away from the screen assembly (16). The length of the doctor blade (15) is equal to the radius of the circular plane of the workpiece carried by the bearing cavity (8).

2. A rotary printing machine for circular planes according to claim 1, characterized in that: The bottom wall of the bearing cavity (8) is provided with multiple suction holes.

3. A rotary printing machine for circular planes according to claim 1, characterized in that: The inner walls of both frames (5) are provided with screen assembly / disassembly structures (17), and the two ends of the screen assembly (16) are respectively mounted on the two screen assembly / disassembly structures (17).

4. A rotary printing machine for circular planes according to claim 3, characterized in that: The screen assembly / disassembly structure (17) includes a support plate (18) disposed on the inner side wall of the frame (5), a fixing plate (19) disposed on the inner side wall of the frame (5) and located above the support plate (18), and a locking mechanism (20) installed on the fixing plate (19). The screen assembly (16) can move along the support plate (18) to the bottom of the fixing plate (19). The locking mechanism (20) is used to lock the screen assembly (16) onto the support plate (18).

5. A rotary printing machine for circular planes according to claim 4, characterized in that: The locking mechanism (20) includes a locking cylinder (21) mounted on the fixed plate (19) and a locking block (22) mounted on the piston rod of the locking cylinder (21) and located below the fixed plate (19). The locking cylinder (21) is used to drive the locking block (22) to move closer to or away from the support plate (18).

6. A rotary printing machine for circular planes according to claim 1, characterized in that: The lifting end of the first lifting drive mechanism (3) is provided with an adjustment plate (23), and a fixture (4) is mounted on the adjustment plate (23). The fixture (4) can be adjusted in position on the adjustment plate (23).

7. A rotary printing machine for circular planes according to claim 1, characterized in that: The visual positioning device (6) includes two sets of CCD visual positioning mechanisms (24), which are arranged opposite to each other.

8. A rotary printing machine for circular planes according to claim 7, characterized in that: A spacing adjustment mechanism (25) is installed on one side of a frame (5). Each of the two adjustment ends of the spacing adjustment mechanism (25) is equipped with an adjustment seat (26). The spacing adjustment mechanism (25) is used to adjust the spacing between the two adjustment seats (26). Two sets of CCD vision positioning mechanisms (24) are respectively installed on the two adjustment seats (26). The CCD vision positioning mechanism (24) can move closer to or further away from the frame (5) on the adjustment seat (26). The CCD vision positioning mechanism (24) is locked on the adjustment seat (26) by fasteners.

9. A rotary printing machine for circular planes according to claim 1, characterized in that: The screen assembly (16) includes a screen frame (27) and a screen (28) detachably mounted on the screen frame (27), the side of which can be inserted between the support plate (18) and the fixing plate (19).

10. A rotary printing machine for circular planes according to claim 9, characterized in that: The two opposite sides of the frame (27) are recessed with mounting cavities (29), and the two ends of the screen (28) are respectively installed in the two mounting cavities (29).

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