Feeding and discharging device for printing machine

Abstract

The utility model relates to the technical field of feeding and discharging devices, and discloses a feeding and discharging device for a printing machine, which comprises a dry-type offset press and a fixed frame, four corners of the lower surface of the fixed frame are fixedly connected with support columns, the middle position below the fixed frame is provided with a limiting box, and the dry-type offset press is fixedly connected inside the limiting box. A transmission structure is arranged in the fixing frame, an electric push rod is arranged below the transmission structure, the transmission structure drives the electric push rod to move, a fixing plate is fixedly connected to the telescopic end of the electric push rod, connecting frames are fixedly connected to the lower portions of the two ends of the fixing plate, hollow blocks are arranged on the two sides of each connecting frame, and suction cups are fixedly connected to the lower portions of the hollow blocks; through the cooperation of the transmission structure and the air pump, plate type materials can be sucked up through the suction cup, automatic feeding and discharging of the printing machine are achieved, and compared with the prior art, plates do not need to be manually carried to the position above a conveying belt one by one.

Description

Technical Field

[0001] The utility model relates to the technical field of loading and unloading devices, and in particular to a loading and unloading device for a printing press. Background Art

[0002] A printing press is a device used to print text, images, or other content. It can transfer images or text onto paper, cloth, or other materials using various methods, such as lithography, gravure, and screen printing. Printing presses are widely used in the publishing, advertising, and packaging industries.

[0003] In the prior art, patent application number CN219489146U discloses a packaging box printing loading and unloading mechanism with an ink drying function, which relates to the field of printing equipment. The printing loading and unloading mechanism is intended to solve the technical problem that the uncured ink on the surface of the current packaging box cardboard is damaged during the loading and unloading process. The printing loading and unloading mechanism includes a frame, a printing press fixedly installed on the upper end of the frame, a conveyor belt driven from left to right is installed on the inner side of the frame, a door frame is fixedly connected to the upper end of the frame, the door frame is arranged on the right side of the printing press, and a triangular balance frame with an internal hollow interior is fixedly connected to the left side of the upper end of the door frame. A movable beam frame is horizontally arranged above the door frame and the balance frame, and several hot air blowers are installed on the upper end of the movable beam frame. The printing loading and unloading mechanism adopts a hot air blower arranged above the packaging box cardboard loading and unloading mechanism to blow hot air on the uncured ink on the surface of the cardboard, accelerate the drying of the ink, and prevent the ink pattern on the cardboard from being damaged due to the loading and unloading work and the stacking friction between the cardboards.

[0004] With respect to the above scheme, there are the following technical problems: during the printing process of the plate, the plate needs to be loaded and unloaded, and at this time a loading and unloading device for the printing press is required. Most of the loading and unloading devices for printing presses in the prior art place the printing press in the middle position of the conveyor belt, and use the conveyor belt to load and unload the printing press. However, when using this method, manual labor is required to move the plate in the box to the top of the conveyor belt before loading can be performed. The amount of manual labor required is too large, and the work efficiency is too low. Therefore, the loading and unloading device for the printing press in the prior art has the defect of requiring manual handling when loading. Utility Model Content

[0005] The purpose of the present utility model is to provide a loading and unloading device for a printing press to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a loading and unloading device for a printing press, comprising a dry offset printing press and a fixed frame, wherein the four corners of the lower surface of the fixed frame are fixedly connected to support columns, a limit box is provided in the middle position below the fixed frame, the dry offset printing press is fixedly connected to the inside of the limit box, a transmission structure is provided inside the fixed frame, an electric push rod is provided below the transmission structure, the transmission structure drives the electric push rod to move, the telescopic end of the electric push rod is fixedly connected to a fixed plate, and the lower ends of the fixed plate are fixedly connected to a connecting frame, hollow blocks are provided on both sides of the connecting frame, and a suction cup is fixedly connected to the lower part of the hollow block, and the suction cup is communicated with the hollow block.

[0007] In a preferred embodiment of the present utility model, the transmission structure includes a servo motor and a threaded rod, a connecting box is fixedly connected to the interior of the fixed frame, the threaded rod is arranged inside the connecting box, the servo motor is fixedly connected to the outside of the fixed frame, the output end of the servo motor passes through the fixed frame and is fixedly connected to one end of the threaded rod, the other end of the threaded rod is rotatably connected to the inner wall of the connecting box, the surface of the threaded rod is threadedly connected to a sliding block, the two ends of the sliding block are slidably connected to the inner wall of the connecting box, the rotation of the threaded rod drives the sliding block to slide along the surface of the threaded rod, the lower end of the sliding block passes through the connecting box and is fixedly connected to the end of the electric push rod, the servo motor is started to drive the threaded rod to rotate, the rotation of the threaded rod drives the sliding block to slide along the surface of the threaded rod, and the sliding block drives the electric push rod to move.

[0008] In a preferred embodiment of the present invention, protective covers are fixedly connected to both sides of the upper surface of the fixed plate, an air pump is fixedly connected to the inside of the protective cover, connecting pipes are fixedly connected to both ends of the air pump, the ends of the connecting pipes pass through the protective cover and extend to the outside of the protective cover, the ends of the connecting pipes are fixedly connected to the top of the hollow block, and the connecting pipes are communicated with the hollow block.

[0009] In a preferred embodiment of the present invention, grooves are provided at both ends of the connecting frame, and a connecting block is fixedly connected to one end of the hollow block near the connecting frame. The connecting block extends to the inside of the groove and is fixedly connected to a spring on the upper surface. The top of the spring is fixedly connected to the inner wall of the groove. The electric push rod is started to push the fixed plate and the connecting frame to move downward. When the suction cup is moved to the upper surface of the plate, the air pump is started. The air pump sucks away the air in the suction cup through the connecting pipe and the hollow block, and the suction cup immediately picks up the plate, and then the electric push rod is started to retract. The servo motor is started again to drive the sliding block and the electric push rod to move, and the plate is transported to the top of the dry offset printing machine. The electric push rod is then started to place the plate above the dry offset printing machine, and the air pump is started again to loosen the plate through the suction cup, and then the dry offset printing machine is started to print the plate. The device repeats this type of work.

[0010] In a preferred embodiment of the present invention, a feed box is provided on one side of the limit box, a discharge box is provided on the other side of the limit box, and positioning frames are provided below the feed box and the discharge box. Beneficial effects

[0011] The utility model provides a loading and unloading device for a printing machine, which has the following beneficial effects:

[0012] 1. This printing press loading and unloading device, through the coordination of a transmission structure and an air pump, uses a suction cup to pick up plate materials, enabling automatic loading and unloading of the printing press. Compared to existing technologies, which do not require manual handling of plates one by one onto the conveyor belt, automatic loading and unloading enables continuous and uninterrupted printing operations, avoiding the waiting and tedious operation of manual plate handling, thereby greatly improving production efficiency and reducing production time.

[0013] 2. The loading and unloading mechanism of this printing press features a hollow block that slides along the surface of the connecting frame. When the electric push rod pushes the connecting frame, the spring contracts. This allows the loading and unloading mechanism to flexibly adapt to the varying heights of the sheets inside the discharge and infeed boxes, eliminating the need for manual adjustment. This ensures the press's adaptability and flexibility, automatically adapting to sheets of varying heights for continuous printing, reducing downtime caused by sheet height variations and improving production continuity and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the top-sectional structure of the fixed frame of the utility model;

[0016] Figure 3 This is a schematic diagram of the side sectional structure of the connection frame of the utility model;

[0017] Figure 4 This is a schematic diagram of the side sectional structure of the connection box of the utility model;

[0018] Figure 5 For this utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0019] In the figure: 1. Dry offset printing machine; 2. Fixed frame; 3. Support column; 4. Limit box; 5. Transmission structure; 6. Electric push rod; 7. Fixed plate; 8. Connecting frame; 9. Hollow block; 10. Suction cup; 11. Servo motor; 12. Threaded rod; 13. Connecting box; 14. Sliding block; 15. Protective cover; 16. Air pump; 17. Connecting pipe; 18. Connecting block; 19. Spring; 20. Feed box; 21. Discharge box; 22. Positioning frame. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-5 The utility model provides a technical solution: a loading and unloading device for a printing press, comprising a dry offset printing machine 1 and a fixed frame 2, wherein the four corners of the lower surface of the fixed frame 2 are fixedly connected with support columns 3, a limit box 4 is provided in the middle position below the fixed frame 2, the dry offset printing machine 1 is fixedly connected to the inside of the limit box 4, a transmission structure 5 is provided inside the fixed frame 2, an electric push rod 6 is provided below the transmission structure 5, and the transmission structure 5 drives the electric push rod 6 to move.

[0022] The transmission structure 5 includes a servo motor 11 and a threaded rod 12. The interior of the fixed frame 2 is fixedly connected to a connecting box 13. The threaded rod 12 is arranged inside the connecting box 13. The servo motor 11 is fixedly connected to the outside of the fixed frame 2. The output end of the servo motor 11 passes through the fixed frame 2 and is fixedly connected to one end of the threaded rod 12. The other end of the threaded rod 12 is rotatably connected to the inner wall of the connecting box 13. The surface of the threaded rod 12 is threadedly connected to a sliding block 14. The two ends of the sliding block 14 are slidably connected to the inner wall of the connecting box 13. The rotation of the threaded rod 12 drives the sliding block 14 to slide along the surface of the threaded rod 12. The lower end of the sliding block 14 passes through the connecting box 13 and is fixedly connected to the end of the electric push rod 6. The servo motor 11 is started to drive the threaded rod 12 to rotate. The rotation of the threaded rod 12 drives the sliding block 14 to slide along the surface of the threaded rod 12, and the sliding block 14 drives the electric push rod 6 to move.

[0023] The telescopic end of the electric push rod 6 is fixedly connected to a fixed plate 7, and the lower parts of both ends of the fixed plate 7 are fixedly connected to a connecting frame 8. Hollow blocks 9 are provided on both sides of the connecting frame 8, and a suction cup 10 is fixedly connected to the lower part of the hollow block 9, and the suction cup 10 is communicated with the hollow block 9.

[0024] Protective covers 15 are fixedly connected to both sides of the upper surface of the fixed plate 7, and an air pump 16 is fixedly connected to the inside of the protective cover 15. Both ends of the air pump 16 are fixedly connected to connecting pipes 17. The ends of the connecting pipes 17 pass through the protective cover 15 and extend to the outside of the protective cover 15. The ends of the connecting pipes 17 are fixedly connected to the top of the hollow block 9. The connecting pipes 17 are communicated with the hollow block 9. By setting the cooperation between the transmission structure 5 and the air pump 16, the suction cup 10 can be used to suck up the plate material to realize automatic loading and unloading of the printing press. Compared with the existing technology, there is no need to manually move the plates one by one to the top of the conveyor belt. Automatic loading and unloading can realize continuous and uninterrupted printing operations, avoiding the waiting and tedious operations of manual handling of the plates, thereby greatly improving production efficiency and reducing production time.

[0025] Start the electric push rod 6 to push the fixed plate 7 and the connecting frame 8 downward. When the suction cup 10 is moved to the upper surface of the plate, start the air pump 16. The air pump 16 sucks away the air in the suction cup 10 through the connecting pipe 17 and the hollow block 9. The suction cup 10 then sucks up the plate. Then start the electric push rod 6 to retract it. Start the servo motor 11 again to drive the sliding block 14 and the electric push rod 6 to move, and transport the plate to the top of the dry offset printing machine 1. Then start the electric push rod 6 to place the plate above the dry offset printing machine 1. Start the air pump 16 again to release the plate through the suction cup 10. Then start the dry offset printing machine 1 to print the plate. The device repeats this kind of work.

[0026] Grooves are provided at both ends of the connecting frame 8. A connecting block 18 is fixedly connected to one end of the hollow block 9 close to the connecting frame 8. The connecting block 18 extends to the inside of the groove and is fixedly connected to a spring 19 on the upper surface. The top of the spring 19 is fixedly connected to the inner wall of the groove. By setting the hollow block 9 to slide along the surface of the connecting frame 8, when the electric push rod 6 pushes the connecting frame 8, the spring 19 contracts, and the loading and unloading devices of the printing press can flexibly adapt to the different heights of the plates inside the discharge box 20 and the feed box 21 without manual adjustment, thereby ensuring the applicability and flexibility of the printing press, automatically adapting to plates of different heights, realizing continuous printing operations, reducing downtime caused by changes in plate height, and improving production continuity and efficiency.

[0027] An input box 20 is provided on one side of the limit box 4, and an output box 21 is provided on the other side of the limit box 4. Positioning frames 22 are provided below the input box 20 and the output box 21. A forklift is used to transport the input box 20 loaded with plates to the inside of the positioning frame 22, and the output box 21 is placed below the fixed frame 2 on the side away from the input box 20.

[0028] Instructions for use: First, use a forklift to transport the feed box 20 containing the plates to the inside of the positioning frame 22, and place the discharge box 21 under the fixed frame 2 on the side away from the feed box 20. Then start the servo motor 11 to drive the threaded rod 12 to rotate. The rotation of the threaded rod 12 drives the sliding block 14 to slide along the surface of the threaded rod 12, and the sliding block 14 drives the electric push rod 6 to move.

[0029] When the electric push rod 6 moves to the specified position, the electric push rod 6 is started to push the fixed plate 7 and the connecting frame 8 downward. When the suction cup 10 is moved to the upper surface of the plate, the air pump 16 is started. The air pump 16 sucks away the air in the suction cup 10 through the connecting pipe 17 and the hollow block 9. The suction cup 10 then sucks up the plate, and then the electric push rod 6 is started to retract. The servo motor 11 is started again to drive the sliding block 14 and the electric push rod 6 to move, and the plate is transported to the top of the dry offset printing machine 1. The electric push rod 6 is then started to place the plate above the dry offset printing machine 1, and the air pump 16 is started again to release the plate through the suction cup 10. The dry offset printing machine 1 is then started to print on the plate. The device repeats this kind of work.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A loading and unloading device for a printing press, comprising a dry offset printing press (1) and a fixed frame (2), characterized in that: The four corners of the lower surface of the fixed frame (2) are fixedly connected to support columns (3), a limit box (4) is arranged in the middle position below the fixed frame (2), the dry offset printing machine (1) is fixedly connected inside the limit box (4), a transmission structure (5) is arranged inside the fixed frame (2), an electric push rod (6) is arranged below the transmission structure (5), the transmission structure (5) drives the electric push rod (6) to move, the telescopic end of the electric push rod (6) is fixedly connected to a fixed plate (7), the lower ends of the fixed plate (7) are fixedly connected to a connecting frame (8), both sides of the connecting frame (8) are provided with a hollow block (9), the lower part of the hollow block (9) is fixedly connected to a suction cup (10), and the suction cup (10) is communicated with the hollow block (9).

2. A loading and unloading device for a printing machine according to claim 1, characterized in that: The transmission structure (5) comprises a servo motor (11) and a threaded rod (12); a connection box (13) is fixedly connected to the interior of the fixed frame (2); and the threaded rod (12) is arranged inside the connection box (13).

3. A loading and unloading device for a printing machine according to claim 2, characterized in that: The servo motor (11) is fixedly connected to the outside of the fixing frame (2); the output end of the servo motor (11) passes through the fixing frame (2) and is fixedly connected to one end of the threaded rod (12); the other end of the threaded rod (12) is rotatably connected to the inner wall of the connection box (13).

4. A loading and unloading device for a printing machine according to claim 3, characterized in that: The surface of the threaded rod (12) is threadedly connected with a sliding block (14), and both ends of the sliding block (14) are slidably connected to the inner wall of the connection box (13). The rotation of the threaded rod (12) drives the sliding block (14) to slide along the surface of the threaded rod (12), and the lower end of the sliding block (14) passes through the connection box (13) and is fixedly connected to the end of the electric push rod (6).

5. The loading and unloading device for a printing machine according to claim 1, characterized in that: Both sides of the upper surface of the fixing plate (7) are fixedly connected to a protective cover (15), the interior of the protective cover (15) is fixedly connected to an air pump (16), and both ends of the air pump (16) are fixedly connected to a connecting pipe (17).

6. A loading and unloading device for a printing machine according to claim 5, characterized in that: The end of the connecting pipe (17) passes through the protective cover (15) and extends to the outside of the protective cover (15). The end of the connecting pipe (17) is fixedly connected to the top of the hollow block (9). The connecting pipe (17) is in communication with the hollow block (9).

7. The loading and unloading device for a printing machine according to claim 1, characterized in that: Both ends of the connection frame (8) are provided with grooves, and one end of the hollow block (9) close to the connection frame (8) is fixedly connected to a connection block (18), the connection block (18) extends into the interior of the groove and is fixedly connected to a spring (19) on the upper surface, and the top end of the spring (19) is fixedly connected to the inner wall of the groove.

8. A loading and unloading device for a printing machine according to any one of claims 1 to 7, characterized in that: An inlet box (20) is provided on one side of the limit box (4), and an outlet box (21) is provided on the other side of the limit box (4). Positioning frames (22) are provided below the inlet box (20) and the outlet box (21).

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