Paper feeding mechanism of printing machine

Abstract

The utility model relates to the technical field of printing machines, and discloses a printing machine paper feeding mechanism which comprises a paper outlet table, a fixing plate is fixedly installed on one side of the paper outlet table, the fixing plate is obliquely arranged, a placing plate is arranged on the fixing plate, and the placing plate is parallel to the fixing plate. A plurality of elastic telescopic rods are connected between the placing plate and the fixing plate, and the placing plate is in sliding connection with the side wall of the paper outlet table; a plurality of layers of single printing paper are placed above a placing plate, the placing plate tightly presses the printing paper between the placing plate and a paper outlet wheel under the action of an elastic telescopic rod, then two limiting plates are adjusted, and the two limiting plates are tightly limited to the two sides of the printing paper; by rotating the driving wheel, the printing paper on the uppermost layer can be discharged through the multiple paper discharging wheels, the paper discharged through the driving wheel is finally discharged through the paper discharging table, and in the paper discharging process, the limiting plates on the two sides can prevent the discharged paper from deviating.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing machine technical field especially relates to a printing machine paper feeding mechanism. BACKGROUND

[0002] As the core equipment of modern printing industry, the development of printing machines has witnessed the tremendous changes in human information dissemination. From the initial manual printing to today's digital and automated printing, the technological progress of printing machines has greatly improved the printing efficiency and quality. Modern printing machines not only have high-speed and high-precision printing capabilities, but also integrate computer control technology to realize an integrated process from design to printing. These machines can handle various complex graphic information, accurately presenting delicate lines and rich colors on paper. In addition, printing machines are equipped with advanced detection systems and adjustment mechanisms to ensure that each printed product meets the expected printing effect and meets the market demand for high-quality printed products.

[0003] In a printing machine, the paper feeding mechanism is a crucial component that is responsible for accurately and stably conveying paper to the printing position. The design of the paper feeding mechanism needs to consider factors such as the physical properties of the paper, the size diversity, and the tension control during the printing process. Due to the varying sizes of paper, from narrow business card paper to wide poster paper, the paper feeding mechanism must have high adaptability and flexibility. To achieve this goal, the paper feeding mechanism usually employs adjustable paper guide wheels, paper pressing devices, and precise sensor systems. These designs not only ensure the stability of the paper during the conveying process, but also automatically adjust according to the size and thickness of the paper, ensuring the smooth progress of the printing process. This technical feature of the paper feeding mechanism provides strong support for the printing industry to handle different sizes of paper, meeting the market demand for diversified printed products.

[0004] Chinese patent CN221718166U discloses a pressure self-adaptive printer paper feeding mechanism, which includes a rack, an upper paper feeding wheel assembly arranged at the top of the rack, and a plurality of lower paper feeding wheel assemblies arranged at the bottom of the rack. The bottom of the rack is provided with a mounting rack for mounting the lower paper feeding wheel assembly, and the bottom of the mounting rack is connected with a positioning box corresponding to the lower paper feeding wheel assembly. Each group of lower paper feeding wheel assemblies includes two groups of driven paper feeding wheels, and the two groups of driven paper feeding wheels are rotationally connected with a positioning shaft. The side of the positioning shaft away from the rack is provided with a top block. In the utility model, the lower paper feeding wheel component is installed in the mounting rack, and the driven paper feeding wheels can float up and down and swing left and right, improving the pressure adaptability to different width and thickness of the certificate. The utility model adopts a conical spring, which has good compression stability and small compression space requirement, reduces the structure height size of the paper feeding mechanism, effectively reduces the volume of the paper feeding mechanism, and further reduces the volume of the printer.

[0005] The paper feeding mechanism of a printing machine has two types, one is to feed a continuous long paper, and cut after printing, and the other type of paper feeding mechanism is to place the stacked single paper in the paper feeding mechanism, and continuously feed in turn. The above device is used for feeding the stacked single paper, however, there are various common printing papers, and the sizes of different printing papers are different, however, the above paper feeding mechanism does not have a limiting mechanism, no matter the size of the paper in the transportation process, it is transported by the multiple paper feeding wheels on the fixed size driving rod, however, this will cause that the smaller size paper will deviate greatly in the paper feeding process due to the larger space on both sides, which will affect the subsequent printing work, therefore, a paper feeding mechanism is needed, which can improve the paper feeding accuracy of the single paper. Utility model content

[0006] Utility model purpose: the purpose of the utility model is to provide a printing machine paper feeding mechanism to solve the above problems in the prior art.

[0007] Technical scheme: a printing machine paper feeding mechanism, comprising a paper outlet table, one side of the paper outlet table is fixedly provided with a fixed plate, the fixed plate is inclinedly arranged, a placing plate is arranged on the fixed plate, the placing plate is parallel to the fixed plate, a plurality of elastic expansion rods are connected between the placing plate and the fixed plate, the placing plate and the side wall of the paper outlet table are slidingly connected, the two sides of the fixed plate are fixedly provided with supporting plates, a driving rod is rotatably connected between the two supporting plates, a plurality of paper outlet wheels are fixedly arranged on the driving rod, two through grooves are formed in the placing plate, two limiting plates are slidingly arranged in the through grooves, through holes are formed in the two limiting plates, the through holes are matched with the paper outlet wheels in size, and an adjusting assembly is arranged between the two limiting plates and the through grooves.

[0008] Further description of the above technical scheme: the two sides of the paper outlet table are fixedly provided with connecting plates, a rotating shaft is rotatably arranged between the two connecting plates, and a paper outlet roller is fixedly arranged on the rotating shaft. The line connecting the paper outlet roller and the paper outlet wheel is parallel to the placing plate.

[0009] Further description of the above technical scheme: the adjusting assembly comprises two screw rods rotatably arranged in the through grooves respectively, the two screw rods are oppositely arranged, and the two screw rods are fixedly connected.

[0010] Further description of the above technical scheme: one end of each of the two screw rods penetrates through the two sides of the placing plate and is fixedly provided with a hand wheel, and the two hand wheels are arranged between the supporting plates and the placing plate.

[0011] Further description of the above technical scheme: one of the supporting plates is fixedly provided with a motor, and the output end of the motor is in transmission connection with the driving rod.

[0012] As the further description of the above technical scheme: two transmission belts are in transmission connection between the driving rod and the rotating shaft, and the two transmission belts are arranged at two ends of the rotating shaft respectively.

[0013] As the further description of the above technical scheme: the edge of the paper outlet table is provided with a round corner, and the round corner is arranged below the paper outlet roller.

[0014] As the further description of the above technical scheme: the outer part of the paper outlet wheel is provided with a rubber layer.

[0015] Beneficial effects: the placing plate is tightly pressed below the paper outlet wheel when being placed in the initial position, the multiple single printed papers are placed above the placing plate, the printed papers are tightly pressed between the placing plate and the paper outlet wheel under the action of the elastic telescopic rod, then the two limiting plates are tightly limited on the two sides of the printed papers by adjusting the two limiting plates, the uppermost printed paper is discharged by the multiple paper outlet wheels by rotating the driving wheel, the discharged paper is finally discharged through the paper outlet table, and the limiting plates on the two sides can prevent the discharged paper from deviating. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the paper feeding mechanism of the printing machine;

[0017] Figure 2 It is a sectional structure schematic view of the printing machine;

[0018] Figure 3 It is a three-dimensional explosion structure schematic view of the printing machine;

[0019] Figure 4 It is a three-dimensional structure schematic view of the placing plate, the limiting plate and the adjusting assembly of the printing machine;

[0020] Figure 5 It is a sectional structure schematic view of the printing machine, and the rubber layer is arranged on the paper feeding wheel;

[0021] Figure 6 It is a sectional structure schematic view of the printing machine, and the round corner is arranged on the edge of the paper outlet table.

[0022] LEGEND:

[0023] 1, paper outlet table; 2, fixed plate; 3, supporting plate; 4, driving rod; 5, paper outlet wheel; 6, motor; 7, connecting plate; 8, rotating shaft; 9, paper outlet roller; 10, transmission belt; 11, through slot; 12, screw rod; 13, limiting plate; 14, through hole; 15, hand wheel; 16, placing plate; 17, elastic telescopic rod; 101, round corner; 501, rubber layer. DETAILED DESCRIPTION

[0024] In order to make the technical scheme of the utility model more clear, the utility model will be explained in further detail below in combination with the drawings and specific embodiments.

[0025] With reference to Figures 1-6 A paper feeding mechanism of a printing machine, comprising a paper outlet table 1, a fixed plate 2 is fixedly installed on one side of the paper outlet table 1, the fixed plate 2 is obliquely arranged, a placing plate 16 is arranged on the fixed plate 2, the placing plate 16 is parallel to the fixed plate 2, a plurality of elastic expansion rods 17 are connected between the placing plate 16 and the fixed plate 2, the placing plate 16 is slidingly connected with the side wall of the paper outlet table 1, support plates 3 are fixedly installed on both sides of the fixed plate 2, a driving rod 4 is rotatably connected between the two support plates 3, a plurality of paper outlet wheels 5 are fixedly installed on the driving rod 4, two through grooves 11 are formed in the placing plate 16, limiting plates 13 are slidingly installed in the two through grooves 11, through holes 14 are formed in the two limiting plates 13, the through holes 14 are matched with the paper outlet wheels 5, and an adjusting assembly is arranged between the two limiting plates 13 and the through grooves 11; the placing plate 16 is tightly pressed below the paper outlet wheels 5 at the initial position, a plurality of single printed papers are placed above the placing plate 16, the printed papers are tightly pressed between the placing plate 16 and the paper outlet wheels 5 under the action of the elastic expansion rods 17, then the two limiting plates 13 are tightly limited on both sides of the printed papers by adjusting the two limiting plates 13, the uppermost printed paper is fed out by the plurality of paper outlet wheels 5 by rotating the driving wheel, the paper fed out by the driving wheel is finally fed out by the paper outlet table 1, and the limiting plates 13 on both sides can prevent the paper from deviating during the paper feeding process.

[0026] As a preferred technical scheme of the embodiment, connecting plates 7 are fixedly installed on both sides of the paper outlet table 1, a rotating shaft 8 is rotatably installed between the two connecting plates 7, a paper outlet roller 9 is fixedly installed on the rotating shaft 8, and the line connecting the paper outlet roller 9 and the paper outlet wheel 5 is parallel to the placing plate 16; the arrangement of the paper outlet roller 9 can ensure that the rear part of the paper fed out by the paper outlet wheel 5 can be conveyed again by the paper outlet roller 9, thereby increasing the stability and fault tolerance of the conveying.

[0027] As a preferred technical scheme of the embodiment, the adjusting assembly comprises two screw rods 12 rotatably installed in the through grooves 11 respectively, the two screw rods 12 are oppositely arranged, and the two screw rods 12 are fixedly connected; the two screw rods 12 are simultaneously rotated, the two limiting plates 13 can slide in the through grooves 11, and the two sides of the printed papers can be further limited by adjusting the limiting plates 13.

[0028] As the preferred technical scheme of the embodiment, one end of each of the two screw rods 12 penetrates through the two sides of the placement plate 16 and is fixedly installed with a hand wheel 15, and the two hand wheels 15 are arranged between the support plate 3 and the placement plate 16; by rotating the hand wheel 15 on any side, the two screw rods 12 can be simultaneously rotated, and the adjustment of the limiting plate 13 can be further realized.

[0029] As the preferred technical scheme of the embodiment, one of the support plates 3 is fixedly installed with a motor 6, and the output end of the motor 6 is in transmission connection with the driving rod 4; the rotation of the driving rod 4 can be realized through the output end of the motor 6.

[0030] As the preferred technical scheme of the embodiment, the driving rod 4 and the rotating shaft 8 are in transmission connection with two transmission belts 10, and the two transmission belts 10 are arranged at the two ends of the rotating shaft 8; the rotation of the driving rod 4 can drive the rotating shaft 8 to rotate through the transmission belt 10, and the rotation of the paper outlet roller 9 can be further realized.

[0031] As the preferred technical scheme of the embodiment, the edge of the paper outlet table 1 is provided with a round corner 101, and the round corner 101 is arranged below the paper outlet roller 9; the round corner 101 is relatively smooth, so that the paper outlet roller 9 will not be jammed when conveying the paper from the placement plate 16, and the paper outlet is more smooth.

[0032] As the preferred technical scheme of the embodiment, the outer part of the paper outlet wheel 5 is sleeved with a rubber layer 501; the rubber layer 501 is relatively soft, which can increase the friction between the paper outlet wheel 5 and the paper, prevent slipping, and increase the protection performance of the paper, and prevent the paper from being damaged in the paper outlet process of the paper outlet wheel 5.

[0033] The above-mentioned embodiments only express several implementation manners of the utility model, and the description is relatively specific and detailed, but it cannot be understood as the limitation of the patent range of the utility model. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A paper feeding mechanism for a printing press, comprising a paper output table (1), characterized in that, A fixing plate (2) is fixedly installed on one side of the paper output table (1). The fixing plate (2) is inclined. A placement plate (16) is provided on the fixing plate (2). The placement plate (16) is parallel to the fixing plate (2). Multiple elastic telescopic rods (17) are connected between the placement plate (16) and the fixing plate (2). The placement plate (16) is slidably connected to the side wall of the paper output table (1). Support plates (3) are fixedly installed on both sides of the fixing plate (2). A drive rod (4) is rotatably connected between the plates (3). Multiple paper output rollers (5) are fixedly installed on the drive rod (4). Two through slots (11) are opened on the placement plate (16). Limiting plates (13) are slidably installed inside the two through slots (11). Through holes (14) are opened on both limiting plates (13). The size of the through holes (14) is adapted to the paper output rollers (5). An adjustment component is provided between the two limiting plates (13) and the through slots (11).

2. The paper feeding mechanism of a printing press according to claim 1, characterized in that, Connecting plates (7) are fixedly installed on both sides of the paper output platform (1), and a rotating shaft (8) is rotatably installed between the two connecting plates (7). A paper output roller (9) is fixedly installed on the rotating shaft (8), and the line connecting the paper output roller (9) and the paper output wheel (5) is parallel to the placement plate (16).

3. The paper feeding mechanism of a printing press according to claim 1, characterized in that, The adjustment assembly includes two screws (12) that are rotatably installed inside the through groove (11), the two screws (12) being arranged opposite to each other and fixedly connected.

4. The paper feeding mechanism of a printing press according to claim 3, characterized in that, One end of each of the two screws (12) passes through both sides of the placement plate (16) and is fixedly mounted with a handwheel (15). Both handwheels (15) are located between the support plate (3) and the placement plate (16).

5. The paper feeding mechanism of a printing press according to claim 1, characterized in that, A motor (6) is fixedly installed on one of the support plates (3), and the output end of the motor (6) is connected to the drive rod (4) for transmission.

6. The paper feeding mechanism of a printing press according to claim 1, characterized in that, Two transmission belts (10) are connected between the drive rod (4) and the rotating shaft (8), and the two transmission belts (10) are respectively set at both ends of the rotating shaft (8).

7. The paper feeding mechanism of a printing press according to claim 1, characterized in that, The edge of the paper output platform (1) is provided with rounded corners (101), which are located below the paper output roller (9).

8. The paper feeding mechanism of a printing press according to claim 1, characterized in that, The paper output roller (5) is covered with a rubber layer (501).

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