Paper positioning mechanism for printing machine

Abstract

The paper positioning mechanism for the printing machine comprises a bottom plate and a workbench, the workbench is arranged in the middle of the upper surface of the bottom plate, four sets of installation grooves are symmetrically formed in the two sides of the workbench, a first electric push rod is fixedly connected into each set of installation groove, and a second electric push rod is fixedly connected into each set of installation groove. The output ends of every two adjacent first electric push rods are jointly connected with a connecting base, the top face of the connecting base is fixedly connected with a conveying assembly through a fixing rod, the height of the conveying assembly is matched with that of the workbench, and four second electric push rods are evenly and symmetrically distributed at the four corners of the upper surface of the bottom plate. The output ends of the second electric push rods are jointly connected with a top plate, the top plate is arranged above the workbench, a pressing plate is arranged on the bottom face of the top plate, pressing assemblies are arranged between the four corners of the upper surface of the pressing plate and the top plate, the conveying assembly comprises a connecting block and a conveying rack, and one side of the conveying rack is fixedly connected with the connecting block.

Description

Technical Field

[0001] This utility model relates to the field of paper positioning technology for printing presses, specifically to a paper positioning mechanism for printing presses. Background Technology

[0002] Printing is a technology that mass-produces original manuscripts such as text, pictures, photographs, and anti-counterfeiting materials by transferring ink to the surface of materials such as paper, textiles, plastics, leather, PVC, and PC through processes such as plate making, inking, and pressing. Printing involves transferring approved printing plates onto the substrate using printing machinery and specialized inks. When printing on paper, the paper needs to be properly positioned, but current printing presses lack paper positioning mechanisms, making it prone to misalignment during delivery.

[0003] The patent application CN217947020U discloses a paper positioning mechanism for a printing press, comprising a device body, a base, a mounting cabinet, a worktable, a first positioning device, a second positioning device, a conveyor belt, and a suction anti-displacement device. The base is located at the bottom of the device body, the mounting cabinet is mounted on top of the base, and the worktable is mounted on top of the mounting cabinet. The first and second positioning devices are symmetrically mounted at the left and right ends of the top of the worktable. The suction anti-displacement device is installed inside the mounting cabinet. A groove is provided in the middle of the top of the worktable, and the conveyor belt is installed in the groove. This mechanism can effectively position and straighten tilted paper, thereby facilitating the printing press's printing operations. Furthermore, this device is simple to operate and easy for staff to use.

[0004] However, the above-mentioned device still has the following problems during implementation:

[0005] The existing printing press paper positioning mechanism lacks a positioning mechanism at the top of the paper, resulting in low positioning accuracy. When printing on thick cardboard of various specifications that requires separate feeding, the existing positioning mechanism lacks effective adaptive adjustment capabilities. This leads to problems such as paper shifting and skewing during the printing process, resulting in quality defects such as misalignment of printed patterns and inaccurate registration. This not only reduces printing efficiency but also increases scrap rate and production costs. Utility Model Content

[0006] The purpose of this invention is to provide a paper positioning mechanism for a printing press to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A paper positioning mechanism for a printing press includes a base plate and a worktable. The worktable is located at the center of the upper surface of the base plate. Four sets of mounting slots are symmetrically opened on both sides of the worktable. A first electric push rod is fixedly connected in each set of mounting slots. The output ends of every two adjacent sets of first electric push rods are connected to a connecting base. A conveying component is fixedly connected to the top surface of each connecting base through a fixing rod. The height of the conveying component is matched with that of the worktable.

[0009] Four sets of second electric push rods are symmetrically and evenly distributed at the four corners of the upper surface of the base plate. The output ends of the second electric push rods are connected to the top plate. The top plate is located above the workbench. A pressure plate is provided on the bottom surface of the top plate. A clamping component is provided between the four corners of the upper surface of the pressure plate and the top plate.

[0010] Preferably, the conveying assembly includes a connecting block and a conveyor frame. Two sets of fixing rods are installed on the upper surface of each set of connecting bases. The top ends of each pair of adjacent sets of fixing rods are connected to the bottom surface of the connecting block. One side of the conveyor frame is fixedly connected to one side of the connecting block.

[0011] Preferably, conveyor shafts are provided on both sides of the conveyor frame, and a conveyor belt is sleeved on the outer surface of the conveyor frame. The conveyor shafts drive the conveyor belts, and the paper is conveyed by the two sets of conveyor belts during printing.

[0012] Preferably, a side baffle is fixedly connected to one side of the upper surface of each of the two sets of connecting blocks, and the two sets of side baffles are arranged correspondingly to limit the movement of the paper on both sides during paper feeding.

[0013] Preferably, corner plates are fixedly connected to the four corners of the top plate, and the output end of the second electric push rod is fixedly connected to the bottom surface of the four sets of corner plates respectively, and the distance between each pair of adjacent corner plates is greater than the length of the connecting base.

[0014] Preferably, the clamping assembly includes a top rod and a clamping rod, the top surface of the top rod is fixedly connected to the bottom surface of the top plate, the bottom surface of the clamping rod is fixedly connected to the top surface of the clamping plate, and the bottom end of the clamping rod is slidably connected to the inside of the top rod.

[0015] Preferably, both sides of the pressure plate are provided with arc-shaped corners, a damping rod is provided inside the top rod, a compression spring is provided around the outer surface of the damping rod, and the bottom end of the damping rod is fixedly connected to the top end of the pressure rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The worktable is used in conjunction with the printing press to perform the positioning and feeding of paper. When the paper is being positioned and conveyed, it is placed on the upper surface of the conveying component. The first electric push rod, which is symmetrically set, facilitates the movement of the two sets of symmetrically set conveying components closer or further away. The adjustment is matched according to the size and width of some thicker cardboard. The side baffle limits the two sides of the thick cardboard to ensure stable conveying and prevent positional deviation.

[0018] 2. The top plate and the pressure plate are matched and set. The second electric push rod makes it easy to adjust the height of the top plate according to the thickness of the paper. The pressure plate sets up to press and hold the cardboard being processed on the upper surface of the conveying component. The setting clamping component keeps the pressure plate in contact with the upper surface of the cardboard, further ensuring that it is not easy to shift and affect the printed product. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is an exploded structural diagram of the top plate of this utility model;

[0021] Figure 3 This is a schematic diagram of the main structure of the workbench portion of this utility model;

[0022] Figure 4 This is a partially exploded structural diagram of the conveying component of this utility model;

[0023] Figure 5 This is a schematic diagram of the main structure of the clamping component of this utility model.

[0024] In the diagram: 1. Base plate; 2. Workbench; 3. Mounting slot; 4. First electric push rod; 5. Connecting base; 501. Fixing rod; 6. Conveying assembly; 601. Connecting block; 602. Conveyor frame; 7. Second electric push rod; 8. Top plate; 801. Holding plate; 9. Pressing assembly; 901. Top rod; 902. Pressing rod; 10. Conveying shaft; 11. Conveyor belt; 12. Side baffle; 13. Corner plate; 14. Arc angle; 15. Damping rod; 16. Compression spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution:

[0027] Example 1:

[0028] A paper positioning mechanism for a printing press includes a base plate 1 and a worktable 2. The worktable 2 is located at the center of the upper surface of the base plate 1. Four sets of mounting slots 3 are symmetrically opened on both sides of the worktable 2. A first electric push rod 4 is fixedly connected in each set of mounting slots 3. The output ends of each pair of adjacent sets of first electric push rods 4 are connected to a connecting base 5. A conveying component 6 is fixedly connected to the top surface of each connecting base 5 by a fixing rod 501. The height of the conveying component 6 is matched with that of the worktable 2. The worktable 2 is used in conjunction with the printing press to perform paper positioning and feeding operations. When the paper is positioned and conveyed, it is placed on the upper surface of the conveying component 6. The symmetrically arranged first electric push rods 4 facilitate the movement of the two symmetrically arranged conveying components 6 closer or further apart, and can be adjusted to match the size and width of some thicker cardboard.

[0029] Four sets of second electric push rods 7 are symmetrically and evenly distributed at the four corners of the upper surface of the base plate 1. The output ends of the second electric push rods 7 are connected to the top plate 8. The top plate 8 is located above the workbench 2. A pressure plate 801 is provided on the bottom surface of the top plate 8. A pressing component 9 is provided between the four corners of the upper surface of the pressure plate 801 and the top plate 8. The pressing component 9 keeps the pressure plate 801 in contact with the upper surface of the cardboard.

[0030] The conveying assembly 6 includes a connecting block 601 and a conveyor frame 602. Two sets of fixing rods 501 are installed on the upper surface of each set of connecting bases 5. The top ends of each pair of adjacent sets of fixing rods 501 are connected to the bottom surface of the connecting block 601. One side of the conveyor frame 602 is fixedly connected to one side of the connecting block 601. Conveying shafts 10 are provided on both sides of the conveyor frame 602. A conveyor belt 11 is sleeved on the outer surface of the conveyor frame 602. The conveyor belt 11 is driven by the conveyor shafts 10. During printing, the paper is conveyed by the two sets of conveyor belts 11.

[0031] Side baffles 12 are fixedly connected to one side of the upper surface of the two sets of connecting blocks 601. The two sets of side baffles 12 are set accordingly. The two sets of side baffles 12 limit the two sides of the paper during the paper conveying. Corner plates 13 are fixedly connected to the four corners of the top plate 8. The output end of the second electric push rod 7 is fixedly connected to the bottom surface of the four sets of corner plates 13. The distance between each pair of adjacent corner plates 13 is greater than the length of the connecting base 5. The top plate 8 will not interfere with the conveying component 6 when it rises and falls.

[0032] Example 2:

[0033] Based on Embodiment 1, this embodiment details the pressing component 9 in Embodiment 1. The pressing component 9 includes a top rod 901 and a pressing rod 902. The top surface of the top rod 901 is fixedly connected to the bottom surface of the top plate 8, and the bottom surface of the pressing rod 902 is fixedly connected to the top surface of the pressing plate 801. The bottom end of the pressing rod 902 is slidably connected to the inside of the top rod 901.

[0034] Both sides of the pressure plate 801 are provided with arc-shaped corners 14. The top rod 901 is provided with a damping rod 15 inside. The outer surface of the damping rod 15 is surrounded by a compression spring 16. The bottom end of the damping rod 15 is fixedly connected to the top end of the clamping rod 902. The pressure plate 801 is used to press and hold the cardboard being processed on the upper surface of the conveying component 6. The clamping component 9 is used to keep the pressure plate 801 in contact with the upper surface of the cardboard, further ensuring that it is not easy to shift and affect the printed product.

[0035] Working principle: During use, this device works in conjunction with the printing press through the set worktable 2 to perform the operation of positioning and feeding paper. When the paper is positioned and conveyed, it is placed on the upper surface of the conveying component 6. The first electric push rod 4, which is symmetrically set, can easily drive the two sets of symmetrically set conveying components 6 to move closer or further away. The adjustment is matched according to the size and width of some thicker cardboard. The side baffle 12 limits the two sides of the thick cardboard, so that it is conveyed stably and the position should not be deviated.

[0036] The top plate 8 is matched with the pressure plate 801. The second electric push rod 7 facilitates the adjustment of the height of the top plate 8 according to the thickness of the paper. The pressure plate 801 is used to press and hold the cardboard being processed on the upper surface of the conveying component 6. The pressing component 9 keeps the pressure plate 801 in contact with the upper surface of the cardboard.

[0037] It should be noted that the first electric push rod 4, the conveyor frame 602, the second electric push rod 7, the conveyor shaft 10 and the conveyor belt 11 are existing devices or equipment in the prior art, or devices or equipment that can be implemented in the prior art. Their power supply, specific composition and principle are clear to those skilled in the art, so they will not be described in detail.

[0038] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper positioning mechanism for a printing press, comprising a base plate (1) and a worktable (2), characterized in that: The workbench (2) is located in the center of the upper surface of the base plate (1). Four sets of mounting slots (3) are symmetrically opened on both sides of the workbench (2). A first electric push rod (4) is fixedly connected in each set of mounting slots (3). The output ends of each two adjacent sets of first electric push rods (4) are connected to a connecting base (5). The top surface of the connecting base (5) is fixedly connected to a conveying component (6) through a fixing rod (501). The height of the conveying component (6) is matched with that of the workbench (2). Four sets of second electric push rods (7) are symmetrically arranged evenly at the four corners of the upper surface of the base plate (1). The output ends of the second electric push rods (7) are connected to the top plate (8). The top plate (8) is located above the workbench (2). A pressure plate (801) is provided on the bottom surface of the top plate (8). A clamping component (9) is provided between the four corners of the upper surface of the pressure plate (801) and the top plate (8).

2. The paper positioning mechanism for a printing press according to claim 1, characterized in that: The conveying assembly (6) includes a connecting block (601) and a conveyor frame (602). Two sets of fixing rods (501) are installed on the upper surface of each set of connecting bases (5). The top ends of each pair of adjacent fixing rods (501) are connected to the bottom surface of the connecting block (601). One side of the conveyor frame (602) is fixedly connected to one side of the connecting block (601).

3. The paper positioning mechanism for a printing press according to claim 2, characterized in that: The conveyor frame (602) is provided with conveyor shafts (10) on both sides. The outer surface of the conveyor frame (602) is fitted with a conveyor belt (11). The conveyor shafts (10) drive the conveyor belt (11). During printing, the paper is conveyed by two sets of conveyor belts (11).

4. A paper positioning mechanism for a printing press according to claim 2, characterized in that: A side baffle (12) is fixedly connected to one side of the upper surface of each of the two sets of connecting blocks (601). The two sets of side baffles (12) are arranged correspondingly, and the two sets of side baffles (12) limit the movement of the paper on both sides during paper feeding.

5. A paper positioning mechanism for a printing press according to claim 1, characterized in that: The top plate (8) is fixedly connected to the four corner plates (13) respectively. The output end of the second electric push rod (7) is fixedly connected to the bottom surface of the four sets of corner plates (13) respectively. The distance between each two adjacent sets of corner plates (13) is greater than the length of the connecting base (5).

6. A paper positioning mechanism for a printing press according to claim 1, characterized in that: The clamping assembly (9) includes a top rod (901) and a clamping rod (902). The top surface of the top rod (901) is fixedly connected to the bottom surface of the top plate (8), and the bottom surface of the clamping rod (902) is fixedly connected to the top surface of the pressure plate (801). The bottom end of the clamping rod (902) is slidably connected to the inside of the top rod (901).

7. A paper positioning mechanism for a printing press according to claim 6, characterized in that: Both sides of the pressure plate (801) are provided with arc-shaped corners (14), the top rod (901) is provided with a damping rod (15), the outer surface of the damping rod (15) is surrounded by a compression spring (16), and the bottom end of the damping rod (15) is fixedly connected to the top end of the pressure rod (902).

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