Adjustable paper feeding mechanism of flat-plate printing machine

Abstract

The utility model discloses an adjustable paper feeding mechanism of a flat printing machine, which belongs to the technical field of paper feeding of printing machines and comprises a paper storage box, one side of the top of the paper storage box is fixedly connected with a motor protection shell, a servo motor is fixedly connected in the motor protection shell, and the output end of the servo motor is fixedly connected with a bidirectional threaded rod. And supporting blocks are fixedly mounted in the centers of the two sides of the top of the paper storage box correspondingly. According to the adjustable paper feeding mechanism of the flat-plate printing machine, a servo motor is controlled to drive a two-way threaded rod to rotate, the two-way threaded rod is utilized to drive two fixing blocks to move, meanwhile, the fixing blocks drive an adjusting plate to slide in a paper storage box, and meanwhile, the adjusting plate slides on the outer arc face of a limiting rod; and by adjusting the position of the adjusting plate in the paper storage box, paper of different sizes can be conveniently put in, so that the paper feeding mechanism can store more kinds of paper, and the universality of the paper feeding mechanism is wider.

Description

Technical Field

[0001] This utility model belongs to the field of paper feeding technology for printing presses, specifically an adjustable paper feeding mechanism for a flatbed printing press. Background Technology

[0002] A modern printing press, a machine for printing text and images, generally consists of mechanisms for plate mounting, inking, impression, and paper feeding. Its working principle is as follows: first, the text and images to be printed are made into a printing plate, which is then mounted on the printing press. Ink is then applied manually or by the press to the areas with text and images on the printing plate, and the ink is directly or indirectly transferred to paper or other substrates, thus reproducing a printed product identical to the printing plate. Before printing, a paper feeding mechanism is needed to feed the paper into the printing press. However, existing paper feeding mechanisms only feed the paper out. Given the variety of paper sizes available, and the inability of the paper feeding mechanism to adjust and store different sizes of paper, it is difficult to handle the storage of various paper sizes. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides an adjustable paper feeding mechanism for a flatbed printing press, which solves the problem that a paper feeding mechanism is needed to feed paper into the printing press before printing. However, existing paper feeding mechanisms only feed paper out, and the paper sizes are diverse. The internal storage size of the paper feeding mechanism cannot be adjusted, making it difficult to store paper of different sizes.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustable paper feeding mechanism for a flatbed printing machine, comprising a paper storage box, a motor protective shell fixedly connected to one side of the top of the paper storage box, a servo motor fixedly connected inside the motor protective shell, a bidirectional threaded rod fixedly connected to the output end of the servo motor, support blocks fixedly installed at the center of both sides of the top of the paper storage box, and the two ends of the bidirectional threaded rod rotatably connected to the support blocks via bearings, adjusting plates slidably connected to both sides of the inside of the paper storage box, three fixing blocks fixedly connected to the top of the adjusting plates, the two ends of the bidirectional threaded rod respectively threaded through and connected to the fixing blocks located at the center of the two adjusting plates, limit blocks fixedly connected to the four corners of the top of the paper storage box, a limit rod fixedly connected between two opposing limit blocks, the fixing blocks located on both sides of the adjusting plates slidably connected to the outer arc surface of the limit rod, a sliding groove opened in the adjusting plate, and a pressing groove opened on the inner walls of both sides of the paper storage box.

[0005] As a further embodiment of this utility model: a longitudinally arranged sliding rod is fixedly connected in the lower pressure groove, and a lower pressure rod is slidably connected through the outer arc surface of the two sliding rods. The lower pressure rod passes through the two sliding grooves, and a lower pressure spring is sleeved on the outer arc surface of the sliding rod located between the top of the lower pressure rod and the lower pressure groove. A support plate is fixedly connected to the opposite side of the bottom of the adjusting plate.

[0006] As a further embodiment of this utility model: the bottom two sides of the paper storage box are fixedly connected to a support base, and a paper outlet slot is opened on one side of the bottom of the paper storage box.

[0007] As a further embodiment of this utility model: a slider is fixedly connected to one side of the paper storage box at the position corresponding to the paper outlet slot, and a base plate is fixedly connected to the bottom of the paper storage box.

[0008] As a further embodiment of this utility model: mounting blocks are fixedly connected to both sides of the bottom of the paper storage box, and a paper feeding wheel is rotatably connected between the two mounting blocks via a bearing, with a fixing plate fixedly connected to one side of one of the mounting blocks.

[0009] As a further embodiment of this utility model: a rotary motor is fixedly connected to the top of the fixing plate, and one end of the paper feeding wheel passes through the mounting block and is fixedly connected to the output end of the rotary motor.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This adjustable paper feeding mechanism for a flatbed printing press, equipped with a servo motor, a bidirectional threaded rod, and an adjusting plate, allows the servo motor to rotate the bidirectional threaded rod when the required distance between the two adjusting plates is needed. The bidirectional threaded rod then moves two fixed blocks, which in turn move the adjusting plate within the paper storage box. Simultaneously, the adjusting plate slides on the outer arc surface of the limiting rod. This adjustment of the plate's position within the paper storage box facilitates the loading of different paper sizes, enabling the paper feeding mechanism to hold a wider variety of paper types and thus increasing its versatility.

[0012] 2. The adjustable paper feeding mechanism of this flatbed printing press consists of a pressure rod, a pressure spring, and a paper storage box. First, pull the pressure rod to compress the pressure spring, allowing the paper to be placed into the paper storage box. The paper is positioned at the bottom of the pressure rod. Then, release the pressure rod and press it onto the top of the paper. The spring force of the pressure spring presses down on the pressure rod and the paper, ensuring that the paper remains in contact with the paper feeding roller, facilitating the paper feeding roller's transport of the paper. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the support base and mounting block structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the paper storage box and motor protective shell of this utility model;

[0016] In the diagram: 1. Paper box; 2. Motor protective shell; 3. Servo motor; 4. Fixing block; 5. Bidirectional threaded rod; 6. Adjusting plate; 7. Sliding groove; 8. Limiting block; 9. Limiting rod; 10. Pressing groove; 11. Sliding rod; 12. Pressing rod; 13. Pressing spring; 14. Support plate; 15. Base plate; 16. Support base; 17. Mounting block; 18. Fixing plate; 19. Rotary motor; 20. Paper feeding wheel; 21. Paper outlet groove; 22. Slider; 23. Support block. Detailed Implementation

[0017] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0018] like Figure 1-3 As shown, this utility model provides a technical solution: an adjustable paper feeding mechanism for a flatbed printing machine, including a paper storage box 1, a motor protective shell 2 fixedly connected to one side of the top of the paper storage box 1, a servo motor 3 fixedly connected inside the motor protective shell 2, a bidirectional threaded rod 5 fixedly connected to the output end of the servo motor 3, and support blocks 23 fixedly installed at the center positions of the top two sides of the paper storage box 1, and the two ends of the bidirectional threaded rod 5 are rotatably connected to the support blocks 23 through bearings.

[0019] Adjustment plates 6 are slidably connected to both sides of the inner side of the paper storage box 1. Three fixing blocks 4 are fixedly connected to the top of the adjustment plates 6. The two ends of the bidirectional threaded rod 5 are respectively threaded through and connected to the fixing blocks 4 located in the center of the two adjustment plates 6. Limiting blocks 8 are fixedly connected to the four corners of the top of the paper storage box 1. Limiting rods 9 are fixedly connected between two opposite limiting blocks 8. The fixing blocks 4 located on both sides of the adjustment plates 6 are slidably connected to the outer arc surface of the limiting rods 9.

[0020] The adjusting plate 6 has a sliding groove 7, and the inner walls on both sides of the paper box 1 have pressing grooves 10 respectively. A longitudinally arranged sliding rod 11 is fixedly connected in the pressing groove 10. The pressing rod 12 passes through the two sliding grooves 7. The outer arc surfaces of the two sliding rods 11 pass through and slide to connect the two ends of the pressing rod 12. A pressing spring 13 is sleeved on the outer arc surface of the sliding rod 11 between the top of the pressing rod 12 and the pressing groove 10.

[0021] The servo motor 3 drives the bidirectional threaded rod 5 to rotate, which in turn drives the fixed block 4 to move. At the same time, the fixed block 4 synchronously drives the adjusting plate 6 to move, allowing the adjusting plate 6 to move closer to or further away, thereby adjusting the distance between the adjusting plates 6 to facilitate the insertion of paper. The pressure groove 10 allows the pressure rod 12 to be installed inside, preventing the pressure rod 12 from getting stuck with the adjusting plate 6 during the pressure operation, which would prevent the pressure rod 12 from working.

[0022] A base plate 15 is fixedly connected to the bottom of the paper storage box 1. A support plate 14 is fixedly connected to the opposite side of the bottom of the adjusting plate 6. The support plate 14 is set above the base plate 15. The support plate 14 can easily lift the paper and prevent the paper from directly contacting the base plate 15, which would increase the friction when the paper moves and thus cause difficulties in paper output.

[0023] Support bases 16 are fixedly connected to both sides of the bottom of the paper storage box 1. A paper outlet slot 21 is opened on one side of the bottom of the paper storage box 1. A slider 22 is fixedly connected to one side of the paper storage box 1 corresponding to the position of the paper outlet slot 21. With the setting of the paper outlet slot 21 and the slider 22, when the paper is discharged through the paper outlet slot 21, the paper will slide out through the slider 22. The surface of the slider 22 corresponding to the outlet of the paper outlet slot 21 is inclined, so that the paper can be discharged into the required position.

[0024] Mounting blocks 17 are fixedly connected to both sides of the bottom of the paper storage box 1. A paper feeding wheel 20 is rotatably connected between the two mounting blocks 17 via bearings. A fixing plate 18 is fixedly connected to one side of one of the mounting blocks 17. A rotary motor 19 is mounted on the fixing plate 18. The output end of the rotary motor 19 passes through the mounting block 17 and is fixedly connected to one side of the paper feeding wheel 20. The top of the paper feeding wheel 20 corresponds to the area of ​​the bottom opening of the paper storage box 1 that is not covered by the bottom plate 15, allowing the paper feeding wheel 20 to contact the paper inside the paper storage box 1. The rotary motor 19 drives the paper feeding wheel 20 to rotate, and the paper feeding wheel 20 is in contact with the bottom of the paper. At this time, the rotation of the paper feeding wheel 20 drives the paper at the bottom to be discharged.

[0025] The working principle of this utility model is as follows: First, the distance between the two adjusting plates 6 needs to be adjusted, then the servo motor 3 can be started. The servo motor 3 drives the bidirectional threaded rod 5 to rotate, and the rotation of the bidirectional threaded rod 5 drives the two fixed blocks 4 to move. At this time, the fixed blocks 4 will synchronously drive the adjusting plates 6 to move. The top of the adjusting plates 6 slides on the limit rod 9. When the two adjusting plates 6 are adjusted to the appropriate position, the lower pressure rod 12 can be pulled to lift the lower pressure rod 12. At the same time, the lower pressure rod 12 squeezes the lower pressure spring 13. At this time, the paper can be placed between the two adjusting plates 6. Then the lower pressure rod 12 can be released. The elastic force of the lower pressure spring 13 drives the lower pressure rod 12 to press the paper. At this time, the paper will stick to the paper feeding wheel 20. When the paper needs to be fed out, the rotary motor 19 can be started. The output end of the rotary motor 19 drives the paper feeding wheel 20 to rotate, so that the paper feeding wheel 20 drives the paper at the bottom to be fed out through the paper outlet 21 and the slider 22.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. An adjustable paper feeding mechanism for a flatbed printing press, comprising a paper storage box (1), characterized in that: A motor protective shell (2) is fixedly connected to one side of the top of the paper storage box (1). A servo motor (3) is fixedly connected inside the motor protective shell (2). A bidirectional threaded rod (5) is fixedly connected to the output end of the servo motor (3). Support blocks (23) are fixedly installed at the center of both sides of the top of the paper storage box (1). The two ends of the bidirectional threaded rod (5) are rotatably connected to the support blocks (23) through bearings. Adjustment plates (6) are slidably connected to both sides inside the paper storage box (1). Three fixed rods are fixedly connected to the top of the adjustment plates (6). Fixed block (4), the two ends of the bidirectional threaded rod (5) are respectively threaded through and connected to the fixed block (4) located in the center of the two adjusting plates (6), the four corners of the top of the paper box (1) are respectively fixedly connected to the limiting blocks (8), the two opposite limiting blocks (8) are fixedly connected to the limiting rod (9), the fixed blocks (4) located on both sides of the adjusting plate (6) are slidably connected to the outer arc surface of the limiting rod (9), the adjusting plate (6) is provided with a sliding groove (7), and the inner walls on both sides of the paper box (1) are respectively provided with a pressing groove (10).

2. The adjustable paper feeding mechanism for a flatbed printing press according to claim 1, characterized in that: The lower pressure groove (10) is fixedly connected with a longitudinally arranged slide rod (11). The outer arc surface of the two slide rods (11) is slidably connected to a lower pressure rod (12). The lower pressure rod (12) passes through the two slide grooves (7). The outer arc surface of the slide rod (11) between the top of the lower pressure rod (12) and the lower pressure groove (10) is sleeved with a lower pressure spring (13). The bottom of the adjusting plate (6) is fixedly connected to a support plate (14) on the opposite side.

3. The adjustable paper feeding mechanism for a flatbed printing press according to claim 1, characterized in that: The bottom sides of the paper storage box (1) are fixedly connected to support bases (16), and a paper outlet slot (21) is opened on one side of the bottom of the paper storage box (1).

4. The adjustable paper feeding mechanism for a flatbed printing press according to claim 3, characterized in that: A slider (22) is fixedly connected to one side of the paper storage box (1) at the position corresponding to the paper outlet slot (21), and a base plate (15) is fixedly connected to the bottom of the paper storage box (1).

5. The adjustable paper feeding mechanism for a flatbed printing press according to claim 1, characterized in that: The bottom sides of the paper storage box (1) are fixedly connected to mounting blocks (17), and the two mounting blocks (17) are rotatably connected to a paper feeding wheel (20) through a bearing. One of the mounting blocks (17) is fixedly connected to a fixing plate (18) on one side.

6. The adjustable paper feeding mechanism for a flatbed printing press according to claim 5, characterized in that: A rotary motor (19) is fixedly connected to the top of the fixed plate (18), and one end of the paper feeding wheel (20) passes through the mounting block (17) and is fixedly connected to the output end of the rotary motor (19).

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