A double-sided double-color lithographic printing machine with automatic plate changing and cleaning function

Abstract

The utility model relates to the technical field of lithographic press, disclose a kind of double-sided double-color lithographic press with automatic change edition and cleaning function, including printing machine body, the upper surface of printing machine body is provided with hydraulic cylinder, the output end of hydraulic cylinder is connected with support frame, the inside of support frame is provided with transmission assembly, the tooth end of transmission assembly is engagedly connected with toothed plate, the outer wall of transmission assembly is threadedly connected with push block, the outer wall of push block is provided with printing plate, the outer wall of printing plate is slidably connected in the outer wall of support frame, the outer wall of support frame is slidably connected in the lateral wall of printing machine body. In the utility model, screw rod will be rotated under the driving of gear, when screw rod rotates, push block is moved, in turn, printing plate is automatically pushed out while support frame rises, reduce the time cost spent for replacing printing plate in later period, realize the effect of improving printing production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of offset printing press technology, and in particular to a double-sided, two-color offset printing press with automatic plate changing and cleaning functions. Background Technology

[0002] Offset printing presses are devices that use the principle of "oil and water repulsion" to achieve printing through the image areas (oil-loving) and blank areas (water-loving) on ​​the printing plate. They are widely used in books, newspapers, packaging, posters and other fields.

[0003] Existing double-sided two-color offset printing presses typically have independent ink and water supply for the front and back color groups, allowing for quick switching of color combinations. However, existing double-sided two-color offset printing presses cannot perform automatic plate changing, which means that when changing printing plates later, operators need to spend a lot of time removing the printing plates, significantly reducing printing production efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a double-sided two-color offset printing press with automatic plate changing and cleaning functions, aiming to improve the problem that existing double-sided two-color offset printing presses cannot perform automatic plate changing, resulting in a significant reduction in printing production efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A double-sided, two-color offset printing press with automatic plate changing and cleaning functions includes a printing press body. A hydraulic cylinder is provided on the upper surface of the printing press body. A support frame is connected to the output end of the hydraulic cylinder. A transmission component is provided inside the support frame. A toothed plate is meshed with the tooth end of the transmission component. A push block is threadedly connected to the outer wall of the transmission component. A printing plate is provided on the outer wall of the push block. The outer wall of the printing plate is slidably connected to the outer wall of the support frame. The outer wall of the support frame is slidably connected to the side wall of the printing press body.

[0007] Preferably, the transmission assembly includes a threaded rod, the outer wall of which is rotatably connected to the inside of the support frame, a gear is fixedly connected to the outer wall of the threaded rod, the tooth end of the gear is meshed with the tooth end of the gear plate, and the outer wall of the threaded rod is threadedly connected to the inside of the push block.

[0008] Preferably, multiple sliding grooves are provided on both the left and right sides of the printing machine body, and the support frame slides inside adjacent sliding grooves.

[0009] Preferably, a fixed frame is fixedly connected to the outer wall of the printing machine body, a motor is fixedly connected inside the fixed frame, a reciprocating lead screw is connected to the output end of the motor, a cleaning component is provided on the outer wall of the reciprocating lead screw, a sliding component is provided on the outer wall of the cleaning component, the outer wall of the sliding component is fixedly connected to the inside of the printing machine body, a push rod is fixedly connected to the outer wall of the cleaning component, an air cylinder is slidably connected to the outer wall of the push rod, and an air outlet plate is provided on the outer wall of the air cylinder.

[0010] Preferably, the cleaning assembly includes a threaded block, the inner thread of which is connected to the outer wall of the reciprocating lead screw, a cleaning plate is fixedly connected to the lower surface of the threaded block, the outer wall of the threaded block is fixedly connected to the outer wall of the push rod, and the outer wall of the threaded block is fixedly connected to the outer wall of the sliding assembly.

[0011] Preferably, the sliding assembly includes a sliding block, the outer wall of which is fixedly connected to the outer wall of the threaded block, and a fixed rod is slidably connected inside the sliding block, the outer wall of which is fixedly connected to the inside of the printing machine body.

[0012] Preferably, the outer wall of the reciprocating lead screw is rotatably connected to the inside of the printing machine body, and the outer wall of the air outlet plate is fixedly connected to the side wall of the printing machine body.

[0013] Preferably, the lower surface of the toothed plate is fixedly connected to the upper surface of the printing press body.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the hydraulic cylinder is activated to move the support frame, which in turn drives the gear to rotate through the gear plate. The threaded rod will rotate under the drive of the gear. When the threaded rod rotates, it will drive the push block to move, thereby automatically pushing out the printing plate while the support frame rises. This reduces the time cost required to replace the printing plate later and improves the efficiency of printing production.

[0016] 2. In this utility model, the starting motor drives the reciprocating lead screw to rotate, which in turn drives the threaded block to move. The cleaning plate moves under the drive of the threaded block. While the threaded block is moving, it also drives the push rod to slide inside the air cylinder, thereby compressing the air inside the air cylinder and blowing it out through the air outlet plate. Through the cooperation between the threaded block, the cleaning plate, the push rod and the air outlet plate, the efficiency of cleaning the printing plate is improved. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a double-sided, two-color offset printing press with automatic plate changing and cleaning functions proposed in this utility model;

[0018] Figure 2A partial structural diagram of the motor of a double-sided, two-color offset printing press with automatic plate changing and cleaning functions proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of the pusher block of a double-sided, two-color offset printing press with automatic plate changing and cleaning functions proposed in this utility model.

[0020] Figure 4 This is a partial structural diagram of the chute of a double-sided, two-color offset printing press with automatic plate changing and cleaning functions proposed in this utility model.

[0021] Legend:

[0022] 1. Printing machine body; 2. Hydraulic cylinder; 3. Support frame; 4. Threaded rod; 5. Gear; 6. Tooth plate; 7. Push block; 8. Printing plate; 9. Fixing frame; 10. Motor; 11. Reciprocating lead screw; 12. Threaded block; 13. Sliding block; 14. Fixing rod; 15. Cleaning plate; 16. Push rod; 17. Air cylinder; 18. Air outlet plate; 19. Slide groove. Detailed Implementation

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figures 1-3 An embodiment of this utility model is provided: a double-sided two-color offset printing machine with automatic plate changing and cleaning functions, including a printing machine body 1, a hydraulic cylinder 2 is provided on the upper surface of the printing machine body 1, a support frame 3 is connected to the output end of the hydraulic cylinder 2, a transmission component is provided inside the support frame 3, a toothed plate 6 is meshed with the tooth end of the transmission component, a push block 7 is threadedly connected to the outer wall of the transmission component, a printing plate 8 is provided on the outer wall of the push block 7, the outer wall of the printing plate 8 is slidably connected to the outer wall of the support frame 3, and the outer wall of the support frame 3 is slidably connected to the side wall of the printing machine body 1;

[0025] Specifically, firstly, the hydraulic cylinder 2 is activated. Through the fixed action of the output end of the hydraulic cylinder 2 and the support frame 3, the support frame 3 will be moved. Furthermore, the toothed plate 6 will drive the transmission component to rotate. When the transmission component rotates, it will drive the push block 7 to move. Thus, while the support frame 3 rises, the movement of the push block 7 will automatically push out the printing plate 8.

[0026] Reference Figures 1-3The transmission component includes a threaded rod 4, the outer wall of which is rotatably connected to the inside of the support frame 3. A gear 5 is fixedly connected to the outer wall of the threaded rod 4, and the tooth end of the gear 5 is meshed with the tooth end of the tooth plate 6. The outer wall of the threaded rod 4 is threadedly connected to the inside of the push block 7. Multiple slide grooves 19 are provided on both the left and right sides of the printing machine body 1, and the support frame 3 slides in the adjacent slide grooves 19.

[0027] Specifically, when the gear 5 rotates through the toothed plate 6, it drives the threaded rod 4 to rotate, which in turn drives the push block 7 to move. The slide groove 19 is used to limit the movement trajectory of the support frame 3, thereby improving the stability of the support frame 3 when it moves.

[0028] Reference Figure 1 and Figure 4 A fixed frame 9 is fixedly connected to the outer wall of the printing machine body 1. A motor 10 is fixedly connected inside the fixed frame 9. A reciprocating lead screw 11 is connected to the output end of the motor 10. A cleaning component is provided on the outer wall of the reciprocating lead screw 11. A sliding component is provided on the outer wall of the cleaning component. The outer wall of the sliding component is fixedly connected to the inside of the printing machine body 1. A push rod 16 is fixedly connected to the outer wall of the cleaning component. An air cylinder 17 is slidably connected to the outer wall of the push rod 16. An air outlet plate 18 is provided on the outer wall of the air cylinder 17.

[0029] Specifically, the motor 10 is turned on to drive the reciprocating screw 11 to rotate, which in turn drives the cleaning component to move. The sliding component is used to improve the stability of the cleaning component when it moves. While the cleaning component moves, it will drive the push rod 16 to move, which will further compress the air cylinder 17 to generate airflow and release it through the air outlet plate 18. Through the cooperation between the cleaning component, the sliding component, the push rod 16, the air cylinder 17 and the air outlet plate 18, the effect of automatically blowing off dust while cleaning the printing plate 8 is achieved.

[0030] Reference Figure 1 and Figure 4 The cleaning assembly includes a threaded block 12, the inner thread of which is connected to the outer wall of the reciprocating screw 11. A cleaning plate 15 is fixedly connected to the lower surface of the threaded block 12. The outer wall of the threaded block 12 is fixedly connected to the outer wall of the push rod 16. The outer wall of the threaded block 12 is also fixedly connected to the outer wall of the sliding assembly. The sliding assembly includes a sliding block 13, the outer wall of which is fixedly connected to the outer wall of the threaded block 12. A fixing rod 14 is slidably connected inside the sliding block 13. The outer wall of the fixing rod 14 is fixedly connected to the inside of the printing machine body 1.

[0031] Specifically, when the reciprocating screw 11 rotates, it will drive the threaded block 12 to move. When the threaded block 12 moves, it will drive the cleaning plate 15 to move through the fixing action of the threaded block 12 and the cleaning plate 15. The sliding block 13 and the fixed rod 14 cooperate with each other to improve the stability of the threaded block 12 when it moves.

[0032] Reference Figure 1 , Figure 3 and Figure 4 The outer wall of the reciprocating lead screw 11 is rotatably connected to the inside of the printing machine body 1, and the outer wall of the air outlet plate 18 is fixedly connected to the side wall of the printing machine body 1; the lower surface of the toothed plate 6 is fixedly connected to the upper surface of the printing machine body 1.

[0033] Specifically, the printing press body 1 is used to support the rotation of the reciprocating lead screw 11, thereby improving the overall stability of the device during operation.

[0034] Working principle: When the printing plate 8 needs to be removed, the hydraulic cylinder 2 is first activated to drive the support frame 3 to move. When the support frame 3 moves, it will drive the gear 5 to rotate through the toothed plate 6, which will further drive the threaded rod 4 to rotate inside the support frame 3. When the threaded rod 4 rotates, it will drive the push block 7 to move. Through the movement of the push block 7, the printing plate 8 is automatically pushed out, which facilitates the replacement of the printing plate 8 later.

[0035] By turning on the motor 10, the reciprocating screw 11 is driven to rotate inside the printing press body 1. When the reciprocating screw 11 rotates, it drives the threaded block 12 to move, which in turn drives the cleaning plate 15 to move. When the threaded block 12 moves, it drives the sliding block 13 to slide on the outer wall of the fixed rod 14. Through the combined action of the sliding block 13 and the fixed rod 14, the stability of the threaded block 12 during movement is improved. At the same time, the threaded block 12 also drives the push rod 16 to slide inside the air cylinder 17, further compressing the air inside the air cylinder 17 and discharging it through the air outlet plate 18. This achieves the effect of automatically blowing away dust while cleaning the printing plate 8, thereby improving the cleaning efficiency of the printing plate 8.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-sided, two-color offset printing press with automatic plate changing and cleaning functions, comprising a printing press body (1), characterized in that: A hydraulic cylinder (2) is provided on the upper surface of the printing machine body (1). A support frame (3) is connected to the output end of the hydraulic cylinder (2). A transmission component is provided inside the support frame (3). A toothed plate (6) is meshed with the tooth end of the transmission component. A push block (7) is threadedly connected to the outer wall of the transmission component. A printing plate (8) is provided on the outer wall of the push block (7). The outer wall of the printing plate (8) is slidably connected to the outer wall of the support frame (3). The outer wall of the support frame (3) is slidably connected to the side wall of the printing machine body (1).

2. The double-sided, two-color offset printing press with automatic plate changing and cleaning functions according to claim 1, characterized in that: The transmission assembly includes a threaded rod (4), the outer wall of which is rotatably connected to the inside of the support frame (3), a gear (5) is fixedly connected to the outer wall of the threaded rod (4), the tooth end of the gear (5) is meshed with the tooth end of the gear plate (6), and the outer wall of the threaded rod (4) is threadedly connected to the inside of the push block (7).

3. A double-sided, two-color offset printing press with automatic plate changing and cleaning functions as described in claim 1, characterized in that: The printing press body (1) has multiple grooves (19) on both the left and right sides, and the support frame (3) slides inside the adjacent grooves (19).

4. A double-sided, two-color offset printing press with automatic plate changing and cleaning functions as described in claim 1, characterized in that: A fixed frame (9) is fixedly connected to the outer wall of the printing machine body (1). A motor (10) is fixedly connected inside the fixed frame (9). A reciprocating lead screw (11) is connected to the output end of the motor (10). A cleaning component is provided on the outer wall of the reciprocating lead screw (11). A sliding component is provided on the outer wall of the cleaning component. The outer wall of the sliding component is fixedly connected inside the printing machine body (1). A push rod (16) is fixedly connected to the outer wall of the cleaning component. An air cylinder (17) is slidably connected to the outer wall of the push rod (16). An air outlet plate (18) is provided on the outer wall of the air cylinder (17).

5. A double-sided, two-color offset printing press with automatic plate changing and cleaning functions as described in claim 4, characterized in that: The cleaning assembly includes a threaded block (12), the internal thread of which is connected to the outer wall of the reciprocating screw (11), a cleaning plate (15) is fixedly connected to the lower surface of the threaded block (12), the outer wall of the threaded block (12) is fixedly connected to the outer wall of the push rod (16), and the outer wall of the threaded block (12) is fixedly connected to the outer wall of the sliding assembly.

6. A double-sided, two-color offset printing press with automatic plate changing and cleaning functions as described in claim 5, characterized in that: The sliding assembly includes a sliding block (13), the outer wall of which is fixedly connected to the outer wall of the threaded block (12), and a fixed rod (14) is slidably connected inside the sliding block (13), the outer wall of which is fixedly connected to the inside of the printing machine body (1).

7. A double-sided, two-color offset printing press with automatic plate changing and cleaning functions according to claim 4, characterized in that: The outer wall of the reciprocating lead screw (11) is rotatably connected to the inside of the printing machine body (1), and the outer wall of the air outlet plate (18) is fixedly connected to the side wall of the printing machine body (1).

8. A double-sided, two-color offset printing press with automatic plate changing and cleaning functions according to claim 1, characterized in that: The lower surface of the toothed plate (6) is fixedly connected to the upper surface of the printing press body (1).

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