Paper supply mechanism of digital printing machine

Abstract

The utility model discloses a paper feeding mechanism of a digital printing machine, which comprises a box body, the inner side of the box body is rotatably sleeved with two symmetrically distributed rotating seats through bearings, the outer side of the box body is fixedly connected with a mounting seat, the upper end of the mounting seat is fixedly provided with a motor, the output end of the motor is rotatably connected with the box body, and the output end of the motor is fixedly connected with the box body. And the output end of the motor is fixedly connected with one rotating seat, a winding roller is slidably connected into the rotating seat in a sleeved mode, and paper is connected to the outer side of the winding roller in a sleeved mode. Through the effect of the motor, the output end of the motor can drive the rotating base to rotate, the winding roller can rotate to achieve paper feeding work, the threaded rod is in threaded connection with the connecting frame, when the handle is rotated to drive the threaded rod to rotate, the connecting frame and the tensioning roller can move, the tensioning roller can press the paper downwards, and the paper feeding work is achieved. And the tension force during paper feeding can be adjusted, and the paper feeding effect is improved.

Description

Technical Field

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

[0002] A digital printing press is a device that uses digital technology for printing. Compared to traditional printing presses, digital printing presses can directly transfer images or documents from computers or other digital devices, eliminating the need for plate making and enabling fast, flexible, and high-quality printing. During the use of a digital printing press, paper needs to be fed through a paper feeding mechanism.

[0003] The utility model patent with patent authorization announcement number CN216033299U discloses an automatic paper feeding device for a digital printing machine, including a main body. The upper outer surface of the main body is provided with a positioning dust cover, and the upper outer surface of the positioning dust cover is provided with an electrostatic dust removal device. The front outer surface of the main body is provided with a maintenance cabinet, and the rear outer surface of the maintenance cabinet is provided with a paper roll.

[0004] In the aforementioned prior art, it is inconvenient to adjust the paper tension during the paper feeding process. Loose paper will affect the paper feeding effect, and the paper winding roller is not easy to disassemble, making it difficult to replace the winding roller after the paper is used up. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a paper feeding mechanism for a digital printing press, which solves the problem of inconvenience in adjusting the paper tension during paper feeding, and also solves the problem of inconvenience in replacing the winding roller.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a paper feeding mechanism for a digital printing machine, comprising a box body, two symmetrically distributed rotating seats rotatably connected to the inner side of the box body via bearings, a mounting base fixedly connected to the outer side of the box body, a motor fixedly mounted on the upper end of the mounting base, the output end of the motor rotatably connected to the box body, and the output end of the motor fixedly connected to one of the rotating seats, a take-up roller slidably sleeved inside the rotating seat, paper sleeved on the outer side of the take-up roller, a guide roller contacting the lower end of the paper, a fixed frame rotatably sleeved on the outer side of the guide roller via bearings, a bracket fixedly connected to the upper end of the fixed frame, the bracket fixedly connected to the box body, a tensioning mechanism provided on the paper, and a connecting mechanism provided on the rotating seat.

[0007] Preferably, the tensioning mechanism includes a screw, which is rotatably sleeved inside the bracket via a bearing. A handle is fixedly connected to the top of the screw, and a connecting frame is threadedly connected to the outside of the screw. A tensioning roller is rotatably connected to the inside of the connecting frame via a bearing, and the tensioning roller contacts the paper. A guide rod is fixedly connected to the upper end of the connecting frame, and a guide sleeve is slidably adjusted on the outside of the guide rod. The guide sleeve is fixedly connected to the bracket, and a guide block is slidably sleeved inside the guide sleeve. The guide block is fixedly connected to the guide rod. By designing this tensioning mechanism, the paper tension can be adjusted.

[0008] Preferably, a limiting block is fixedly connected to the bottom of the screw, and the limiting block is annular. By designing the limiting block, the connecting frame can be prevented from detaching from the screw.

[0009] Preferably, the guide sleeve has a guide groove inside, and a guide rod is slidably connected inside the guide groove. By designing the guide groove, the guide rod can slide along the guide sleeve.

[0010] Preferably, the connecting mechanism includes a fixed rod, which is fixedly connected inside the rotating seat. A spring is provided on the outer side of the fixed rod, and a slide block is slidably sleeved on the outer side of the fixed rod. The slide block is slidably connected to the rotating seat, and a spring block is fixedly connected to the outer side of the slide block. The spring block is fixedly connected to the rotating seat, and a ball bearing is movably sleeved inside the slide block. The ball bearing is movably connected to the take-up roller. This connecting mechanism facilitates the disassembly of the take-up roller.

[0011] Preferably, one end of the spring is fixedly connected to the slide, and the other end of the spring is fixedly connected to the rotating seat. The spring is designed so that its force can be applied to the slide.

[0012] Preferably, the take-up roller has a groove inside, and a ball bearing is slidably connected inside the groove. By designing the groove, the ball bearing can roll inside the groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model utilizes the design of a motor, whose output can drive the rotating base to rotate, thereby enabling the paper feeding operation by rotating the take-up roller. Through the threaded connection between the screw and the connecting frame, the connecting frame and tension roller can be moved when the handle is turned to drive the screw to rotate. The tension roller can press down on the paper and adjust the tension force during paper feeding, thereby improving the paper feeding effect.

[0015] 2. This utility model, through the design of the insertion of the ball bearing and the groove, can limit the winding roller and realize the connection and fixation between the winding roller and the rotating seat, so as to realize the rotation of the winding roller for paper feeding. When the rotating roller is pulled horizontally, the groove and the ball bearing can be separated, so that the winding roller can be pulled out from the inside of the rotating seat, and the winding roller can be easily replaced. Attached Figure Description

[0016] Figure 1 The overall three-dimensional structure of this utility model Figure 1 ;

[0017] Figure 2 The overall three-dimensional structure of this utility model Figure 2 ;

[0018] Figure 3 This utility model Figure 1 A front sectional view of the guide sleeve;

[0019] Figure 4 This utility model Figure 2 A front sectional view of the rotating seat.

[0020] In the diagram: 1. Box body; 2. Mounting base; 3. Motor; 4. Rotating base; 5. Take-up roller; 6. Paper; 7. Guide roller; 8. Tensioning mechanism; 9. Connecting mechanism; 10. Fixing frame; 11. Bracket; 81. Screw; 82. Handle; 83. Limiting block; 84. Connecting frame; 85. Tensioning roller; 86. Guide rod; 87. Guide sleeve; 88. Guide groove; 89. Guide block; 91. Fixing rod; 92. Spring; 93. Slide; 94. Spring block; 95. Ball bearing; 96. Groove. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 , Figure 2A paper feeding mechanism for a digital printing machine includes a box body 1. Two symmetrically distributed rotating seats 4 are rotatably sleeved on the inner side of the box body 1 via bearings. A mounting seat 2 is fixedly connected to the outer side of the box body 1. A motor 3 is fixedly installed on the upper end of the mounting seat 2. The output end of the motor 3 is rotatably connected to the box body 1 and fixedly connected to one of the rotating seats 4. A take-up roller 5 is slidably sleeved inside the rotating seat 4. Paper 6 is sleeved on the outer side of the take-up roller 5. The lower end of the paper 6 contacts a guide roller 7. A fixing frame 10 is rotatably sleeved on the outer side of the guide roller 7 via bearings. A bracket 11 is fixedly connected to the upper end of the fixing frame 10 and fixedly connected to the box body 1. A tensioning mechanism 8 is provided on the paper 6, and a connecting mechanism 9 is provided on the rotating seat 4.

[0023] Please see Figure 1 , Figure 3 The tensioning mechanism 8 includes a screw 81. The screw 81 is rotatably sleeved inside the bracket 11 via a bearing. A handle 82 is fixedly connected to the top of the screw 81, and a limit block 83 is fixedly connected to the bottom of the screw 81. The limit block 83 is annular and is designed to prevent the connecting frame 84 from disengaging from the screw 81. The connecting frame 84 is threadedly connected to the outside of the screw 81, and a tension roller 85 is rotatably connected to the inside of the connecting frame 84 via a bearing. The tension roller 85 contacts the paper 6. A guide rod 86 is fixedly connected to the upper end of the connecting frame 84. A guide sleeve 87 is slidably adjusted on the outside of the guide rod 86. A guide groove 88 is opened inside the guide sleeve 87. The guide rod 86 is slidably connected inside the guide groove 88. By designing the guide groove 88, the guide rod 86 can slide along the guide sleeve 87. The guide sleeve 87 is fixedly connected to the bracket 11. A guide block 89 is slidably sleeved inside the guide sleeve 87. The guide block 89 is fixedly connected to the guide rod 86. By designing the tensioning mechanism 8, the tension of the paper 6 can be adjusted.

[0024] Please see Figure 1 , Figure 2 , Figure 4 The connecting mechanism 9 includes a fixed rod 91, which is fixedly connected inside the rotating seat 4. A spring 92 is provided on the outside of the fixed rod 91. One end of the spring 92 is fixedly connected to the slide seat 93, and the other end of the spring 92 is fixedly connected to the rotating seat 4. By designing the spring 92, the force of the spring 92 can act on the slide seat 93. The slide seat 93 is slidably sleeved on the outside of the fixed rod 91. The slide seat 93 is slidably connected to the rotating seat 4. A spring block 94 is fixedly connected on the outside of the slide seat 93. The spring block 94 is fixedly connected to the rotating seat 4. A ball bearing 95 is movably sleeved inside the slide seat 93. The ball bearing 95 is movably connected to the take-up roller 5. A groove 96 is opened inside the take-up roller 5. The ball bearing 95 is slidably connected inside the groove 96. By designing the groove 96, the ball bearing 95 can roll inside the groove 96. By designing the connecting mechanism 9, it is convenient to disassemble the take-up roller 5.

[0025] The specific implementation process of this utility model is as follows: In use, the motor 3 is started, and the output end of the motor 3 drives the rotating seat 4 to rotate. The rotating seat 4 drives the take-up roller 5 to rotate, and the paper 6 is conveyed below the tension roller 85 and above the guide roller 7 to achieve the paper feeding operation. When it is necessary to adjust the tension of the paper 6, the handle 82 is turned, which drives the screw 81 to rotate, causing the connecting frame 84 to perform a threaded movement. The connecting frame 84 drives the tension roller 85 to move downward, and the tension roller 85 will press down on the paper 6, thus adjusting the tension during paper feeding and improving the paper feeding effect.

[0026] When it is necessary to disassemble the take-up roller 5, simply pull the take-up roller 5 outwards. The take-up roller 5 slides along the rotating seat 4. The arc surface of the groove 96 inside the take-up roller 5 will squeeze and push the ball 95 to move. The ball 95 will roll into the rotating seat 4. The ball 95 drives the slide 93 to slide along the fixed rod 91. The slide 93 squeezes the spring 92 and at the same time squeezes the spring block 94, which can separate the groove 96 from the ball 95. Then the take-up roller 5 can be pulled out from the rotating seat 4 for easy replacement.

[0027] 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 feeding mechanism for a digital printing press, comprising a box body (1), characterized in that: The inner side of the box body (1) is rotatably connected to two symmetrically distributed rotating seats (4) via bearings. The outer side of the box body (1) is fixedly connected to a mounting seat (2). A motor (3) is fixedly installed at the upper end of the mounting seat (2). The output end of the motor (3) is rotatably connected to the box body (1). The output end of the motor (3) is fixedly connected to one of the rotating seats (4). A take-up roller (5) is slidably sleeved inside the rotating seat (4). Paper (6) is sleeved on the outer side of the take-up roller (5). The lower end of the paper (6) contacts a guide roller (7). A fixed frame (10) is rotatably sleeved on the outer side of the guide roller (7) via bearings. A bracket (11) is fixedly connected at the upper end of the fixed frame (10). The bracket (11) is fixedly connected to the box body (1). A tensioning mechanism (8) is provided on the paper (6). A connecting mechanism (9) is provided on the rotating seat (4).

2. The paper feeding mechanism of a digital printing press according to claim 1, characterized in that: The tensioning mechanism (8) includes a screw (81). The screw (81) is rotatably sleeved inside the bracket (11) via a bearing. A handle (82) is fixedly connected to the top of the screw (81). A connecting frame (84) is threadedly connected to the outside of the screw (81). A tension roller (85) is rotatably connected to the inside of the connecting frame (84) via a bearing. The tension roller (85) contacts the paper (6). A guide rod (86) is fixedly connected to the upper end of the connecting frame (84). A guide sleeve (87) is slidably adjusted on the outside of the guide rod (86). The guide sleeve (87) is fixedly connected to the bracket (11). A guide block (89) is slidably sleeved inside the guide sleeve (87). The guide block (89) is fixedly connected to the guide rod (86).

3. The paper feeding mechanism of a digital printing press according to claim 2, characterized in that: The bottom of the screw (81) is fixedly connected to a limiting block (83), which is ring-shaped.

4. The paper feeding mechanism of a digital printing press according to claim 2, characterized in that: The guide sleeve (87) has a guide groove (88) inside, and a guide rod (86) is slidably connected inside the guide groove (88).

5. The paper feeding mechanism of a digital printing press according to claim 1, characterized in that: The connecting mechanism (9) includes a fixed rod (91), the fixed rod (91) is fixedly connected inside the rotating seat (4), a spring (92) is provided on the outside of the fixed rod (91), a slide block (93) is slidably sleeved on the outside of the fixed rod (91), the slide block (93) is slidably connected to the rotating seat (4), a spring block (94) is fixedly connected on the outside of the slide block (93), the spring block (94) is fixedly connected to the rotating seat (4), a ball bearing (95) is movably sleeved inside the slide block (93), and the ball bearing (95) is movably connected to the take-up roller (5).

6. The paper feeding mechanism of a digital printing press according to claim 5, characterized in that: One end of the spring (92) is fixedly connected to the slide (93), and the other end of the spring (92) is fixedly connected to the rotating seat (4).

7. The paper feeding mechanism of a digital printing press according to claim 1, characterized in that: The take-up roller (5) has a groove (96) inside, and a ball (95) is slidably connected inside the groove (96).

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