Auxiliary limiting device for digital printing machine

By combining a two-way lead screw and a limit rod, the problem of incompatibility between the existing digital printing press limit device and the paper storage box is solved, achieving stable limiting and smooth transmission of different paper sizes, and improving the adaptability and ease of operation of the device.

CN224465523UActive Publication Date: 2026-07-07LUOYANG MEITU DIGITAL PRINTING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LUOYANG MEITU DIGITAL PRINTING CO LTD
Filing Date
2025-09-17
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

The auxiliary limiting device used in existing digital printing presses is not compatible with the paper storage box, resulting in complicated operation and low compatibility, and it is impossible to achieve single-sheet paper limiting and transmission during multiple printing.

Method used

It adopts a combination structure of bidirectional lead screw and limit rod. Through the cooperation of slide plate and limit rod, it can quickly limit the paper size of different paper sizes. The cooperation of bidirectional motor and paper feeding roller ensures the compatibility of paper with paper box. Rubber pads are used to prevent multiple sheets of paper from being transported.

Benefits of technology

It achieves stable limiting for different paper sizes, improves the adaptability and ease of use of the device, and ensures smooth paper delivery and printing results.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of auxiliary limiting devices for digital printing machine, it is related to limiting device technical field, specifically a kind of auxiliary limiting device for digital printing machine, including base, the top of base is fixedly connected with shell, the front of base is fixedly connected with motor, the side of motor is rotatably connected with gear one, the side of gear one is fixedly connected with two-way screw rod, the outer surface of two-way screw rod is threadedly connected with rotating shaft sleeve, the outer surface of rotating shaft sleeve is rotatably connected with slide, the side of slide is fixedly connected with connecting plate, the one end of connecting plate is fixedly connected with limiting rod. The auxiliary limiting device for digital printing machine, through the cooperation setting of slide and limiting rod, in the process of use, it can be moved at two-way screw rod by the rotation of slide with rotating shaft sleeve, to drive limiting rod to approach or away from each other, to limit the paper specification of different completion.
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Description

Technical Field

[0001] This utility model relates to the field of limiting device technology, specifically an auxiliary limiting device for a digital printing machine. Background Technology

[0002] Digital printing presses, also known as universal flatbed printers or flatbed printers, have broken through the bottlenecks of digital printing technology, achieving true one-page printing, no need for plate making, and full-color image completion in one pass. The auxiliary limiting device of a digital printing press is used to assist the operation of the press, limiting and processing the printing material.

[0003] Chinese utility model patent CN219883552U discloses an auxiliary limiting device for a digital printing machine. Although it can facilitate the limiting of the paper to be printed by adding a limiting delivery component, ensuring that the paper enters the printing machine neatly and effectively avoiding the paper skewing from affecting the printing effect, this auxiliary limiting device for a digital printing machine has the disadvantage of being unable to be compatible with the paper storage box due to its unique structural features. Therefore, it cannot guarantee the limiting and delivery of a single sheet of paper during multiple printings, resulting in complicated operation and low adaptability. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an auxiliary limiting device for digital printing machines, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary limiting device for a digital printing machine, comprising a base, a paper outlet on one side of the base, a housing fixedly connected to the top of the base, sliding grooves at both ends of the housing, a motor fixedly connected to the front of the base, a gear rotatably connected to one side of the motor, a gear 2 connected below the gear 1, a bidirectional lead screw fixedly connected to one side of the gear 1, a rotating shaft sleeve threadedly connected to the outer surface of the bidirectional lead screw, a sliding plate rotatably connected to the outer surface of the rotating shaft sleeve, a connecting plate fixedly connected to one side of the sliding plate, and a limiting rod fixedly connected to one end of the connecting plate.

[0008] Optionally, there are several rotating bushings, which are evenly distributed symmetrically at both ends of the outer surface of the bidirectional lead screw, and a support shaft is provided in the middle of the outer surface of the bidirectional lead screw.

[0009] Optionally, a paper outlet is provided on one side of the housing. The cross-sectional dimensions of the paper outlet are the same as those of the paper outlet at the base. The width of the paper outlet is slightly greater than the maximum distance between the two limiting rods, and the height of the paper outlet is slightly greater than the height of the limiting rods.

[0010] Optionally, one end of the limiting rod is located inside the paper storage box, and the other end of the limiting rod is located inside the paper outlet of the housing, and the lower surface of the limiting rod is attached to the lower inner surface of the paper storage box and the lower inner surface of the paper outlet of the housing.

[0011] Optionally, a paper storage box is fixedly connected to one side of the base, and a support base is fixedly connected to the bottom of the paper storage box. A rubber pad is provided inside the paper storage box, and the rubber pad is located in the middle of one side of the paper outlet at the base.

[0012] Optionally, a top cover is rotatably connected to one side of the housing, a sleeve is fixedly connected to the bottom of the top cover, a column is slidably connected inside the sleeve, a spring is provided on the outer surface of the column, a bidirectional motor is fixedly connected to the bottom of the column, and paper feeding rollers are rotatably connected to both ends of the bidirectional motor, the paper feeding rollers being elliptical in shape.

[0013] This utility model provides an auxiliary limiting device for a digital printing machine, which has the following advantages:

[0014] 1. This auxiliary limiting device for digital printing presses, through the setting of a bidirectional lead screw, enables the synchronous rotation of the two end rotating sleeves via the bidirectional lead screw, allowing the paper to be clamped at the center. Through the cooperation of the sliding plate and the limiting rods, during use, the sliding plate moves along the bidirectional lead screw as the rotating sleeves rotate, thereby causing the limiting rods to move closer or further apart. This allows for limiting different paper sizes, achieving rapid auxiliary limiting for different paper dimensions, resulting in stable limiting and convenient and quick operation.

[0015] 2. The auxiliary limiting device for this digital printing press, through the setting of the paper storage box, enables the auxiliary limiting device to cooperate with the paper storage box, improving the adaptability of the device. Through the cooperation of the bidirectional motor and the paper feeding roller, during use, the sleeve column above the bidirectional motor and the spring can make the paper feeding roller fully fit against the upper surface of the paper. This allows the paper to be limited by the limiting rods on both sides and then pushed out by the paper feeding roller in the center. At the same time, it can cooperate with the paper storage box, thus improving the adaptability of the device. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the shell of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the limiting structure of this utility model;

[0019] Figure 4 This is a front sectional view of the paper storage box of this utility model;

[0020] Figure 5 This is a side sectional view of the cardboard box of this utility model.

[0021] In the diagram: 1. Base; 101. Paper outlet at the base; 2. Housing; 201. Paper outlet at the housing; 202. Slide groove; 3. Motor; 4. Gear 1; 5. Gear 2; 6. Bidirectional lead screw; 7. Support shaft; 8. Rotary shaft sleeve; 9. Slide plate; 10. Connecting plate; 11. Limiting rod; 12. Paper storage box; 13. Support base; 14. Top cover; 15. Bidirectional motor; 16. Paper feed roller; 17. Rubber pad. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example

[0024] Please see Figures 1 to 5 The present invention provides a technical solution: an auxiliary limiting device for a digital printing machine, comprising a base 1, a paper outlet 101 on one side of the base 1, a housing 2 fixedly connected above the base 1, sliding grooves 202 at both ends of the housing 2, a motor 3 fixedly connected to the front of the base 1, a gear 4 rotatably connected to one side of the motor 3, a gear 5 connected below the gear 4, a bidirectional lead screw 6 fixedly connected to one side of the gear 4, a rotating shaft sleeve 8 threadedly connected to the outer surface of the bidirectional lead screw 6, a sliding plate 9 rotatably connected to the outer surface of the rotating shaft sleeve 8, a connecting plate 10 fixedly connected to one side of the sliding plate 9, and a limiting rod 11 fixedly connected to one end of the connecting plate 10.

[0025] Specifically, through the coordinated arrangement of the slide plate 9 and the limiting rod 11, during use, the slide plate 9 can move at the bidirectional lead screw 6 as the rotating shaft sleeve 8 rotates, thereby causing the limiting rod 11 to move closer or further apart, thus enabling the limiting of different paper sizes. At the same time, through the setting of the paper storage box 12, the auxiliary limiting device can cooperate with the paper storage box 12 to complete the limiting and conveying process of a single sheet of paper, improving the adaptability of the auxiliary limiting device.

[0026] Please see Figures 1 to 3 There are several rotating bushings 8, which are evenly distributed symmetrically on both ends of the outer surface of the bidirectional lead screw 6. A support shaft 7 is provided in the middle of the outer surface of the bidirectional lead screw 6. A paper outlet 201 is provided on one side of the housing 2. The cross-sectional size of the paper outlet 201 is the same as that of the paper outlet 101 at the base. The width of the paper outlet 201 is slightly larger than the maximum distance between the two limiting rods 11, and the height of the paper outlet 201 is slightly larger than the height of the limiting rod 11. One end of the limiting rod 11 is located inside the paper storage box 12, and the other end of the limiting rod 11 is located inside the paper outlet 201 at the housing. The lower surface of the limiting rod 11 is attached to the lower inner surface of the paper storage box 12 and the lower inner surface of the paper outlet 201 at the housing.

[0027] Specifically, by setting the bidirectional lead screw 6, the auxiliary limiting device of the digital printing machine can drive the two end rotating sleeves 8 to rotate synchronously, so that the paper can be clamped at the center. Through the cooperation of the sliding plate 9 and the limiting rod 11, during use, the sliding plate 9 can move at the bidirectional lead screw 6 as the rotating sleeve 8 rotates, thereby driving the limiting rod 11 to move closer or further away from each other, so as to limit different paper sizes.

[0028] Please see Figures 3 to 5 A paper storage box 12 is fixedly connected to one side of the base 1, and a support base 13 is fixedly connected to the bottom of the paper storage box 12. A rubber pad 17 is provided inside the paper storage box 12. The rubber pad 17 is located in the middle of one side of the paper outlet 101 at the base. A top cover 14 is rotatably connected to one side of the housing 2. A sleeve is fixedly connected to the bottom of the top cover 14. A column is slidably connected inside the sleeve. A spring is provided on the outer surface of the column. A bidirectional motor 15 is fixedly connected to the bottom of the column. Paper feed rollers 16 are rotatably connected to both ends of the bidirectional motor 15. The paper feed rollers 16 are elliptical in shape.

[0029] Specifically, through the coordinated arrangement of the bidirectional motor 15 and the paper feed roller 16, during use, the sleeve column above the bidirectional motor 15 and the spring can make the paper feed roller 16 completely fit against the upper surface of the paper, thereby enabling the paper to be pushed out in the center by the paper feed roller 16 after being limited by the limiting rod 11 on both sides.

[0030] In use, first open the top cover 14. The paper feed rollers 16 will then lift with the top cover 14. Next, place the required printing paper into the paper storage box 12. Then, drive the motor 3, which in turn drives the gear 4 to rotate. The rotation of gear 4 drives the bidirectional lead screw 6, causing the threaded shaft sleeve 8 on the outer surface of the bidirectional lead screw 6 to rotate. This causes the two sliding plates 9 to move closer together, thus bringing the two limiting rods 11 closer together to clamp the paper. Simultaneously, through gear transmission, the gear 5 rotates, driving the lower bidirectional lead screw 6 to rotate, which in turn drives the corresponding shaft sleeve 8 to rotate, making the limiting rods 11 run more smoothly. After clamping, close the top cover 14. The paper feed rollers 16 will then press down as the top cover 14 closes, compressing the spring above the bidirectional motor 15. This ensures that the paper feed roller 16 is in complete contact with the paper. Then, the bidirectional motor 15 is started by the external control button of the bidirectional motor 15, which drives the internal paper feed roller 16 to rotate. This causes the paper to move along the limit rod 11 to the paper outlet 101 at the base. At the same time, due to the setting of the rubber pad 17, multiple sheets of paper are prevented from being transported at one time. The paper at the bottom will be stuck due to the friction of the rubber pad. Then, the paper will be sent out through the paper outlet 101 at the base, and then slide out through the support shaft 7 to the paper outlet 201 at the housing. Finally, the paper is discharged from the paper outlet 201 at the housing, completing the positioning and transmission of different sizes of paper, thereby achieving the effect of auxiliary limit. If different sizes of paper need to be printed, just readjust according to the above steps. After use, just turn off the bidirectional motor 15.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An auxiliary limiting device for a digital printing machine, comprising a base (1), characterized in that: The base (1) has a paper outlet (101) on one side. The housing (2) is fixedly connected to the top of the base (1). The housing (2) has grooves (202) at both ends. The motor (3) is fixedly connected to the front of the base (1). Gear 1 (4) is rotatably connected to one side of the motor (3). Gear 2 (5) is connected to the gear below gear 1 (4). A two-way lead screw (6) is fixedly connected to one side of gear 1 (4). A rotating shaft sleeve (8) is threadedly connected to the outer surface of the two-way lead screw (6). A sliding plate (9) is rotatably connected to the outer surface of the rotating shaft sleeve (8). A connecting plate (10) is fixedly connected to one side of the sliding plate (9). A limit rod (11) is fixedly connected to one end of the connecting plate (10).

2. The auxiliary limiting device for a digital printing machine according to claim 1, characterized in that: There are several rotating bushings (8), and the several rotating bushings (8) are evenly distributed in a symmetrical manner on both ends of the outer surface of the bidirectional lead screw (6). A support shaft (7) is provided in the middle of the outer surface of the bidirectional lead screw (6).

3. The auxiliary limiting device for a digital printing machine according to claim 1, characterized in that: The housing (2) has a paper outlet (201) on one side. The cross-sectional size of the paper outlet (201) is the same as that of the paper outlet (101) at the base. The width of the paper outlet (201) is slightly greater than the maximum distance between the two limiting rods (11), and the height of the paper outlet (201) is slightly greater than the height of the limiting rods (11).

4. The auxiliary limiting device for a digital printing machine according to claim 1, characterized in that: One end of the limiting rod (11) is located inside the paper storage box (12), and the other end of the limiting rod (11) is located inside the paper outlet (201) at the housing. The lower surface of the limiting rod (11) is attached to the lower inner surface of the paper storage box (12) and the lower inner surface of the paper outlet (201) at the housing.

5. The auxiliary limiting device for a digital printing machine according to claim 1, characterized in that: A paper storage box (12) is fixedly connected to one side of the base (1), and a support base (13) is fixedly connected to the bottom of the paper storage box (12). A rubber pad (17) is provided inside the paper storage box (12), and the rubber pad (17) is located in the middle of one side of the paper outlet (101) at the base.

6. The auxiliary limiting device for a digital printing machine according to claim 1, characterized in that: A top cover (14) is rotatably connected to one side of the housing (2). A sleeve is fixedly connected to the bottom of the top cover (14). A column is slidably connected inside the sleeve. A spring is provided on the outer surface of the column. A bidirectional motor (15) is fixedly connected to the bottom of the column. Paper feed rollers (16) are rotatably connected to both ends of the bidirectional motor (15). The paper feed rollers (16) are elliptical in shape.