A paper jam preventing discharge port for printing

Abstract

The utility model relates to printing equipment technical field discloses a kind of anti paper jam discharging port for printing, including first mounting plate and second mounting plate, and upper press roll and lower press roll are movably installed between the first mounting plate and second mounting plate. By rotating adjusting screw, driving limit sliding block moves up and down along limit sliding slot, can according to the paper thickness of required printing, the gap between upper press roll and lower press roll is adjusted to slightly less than the interval of paper thickness, to ensure the rolling clamping effect of upper press roll and lower press roll to paper, avoid the paper jam problem caused by clamping too tight or too loose. By the first ion wind stick being set above paper, the electric field effect generated by the second ion wind stick being set below paper is matched, can occur neutralization reaction with the static charge of paper surface, to achieve the effect of removing paper static electricity, avoid the mutual adsorption between paper to affect stacking and paper smoothness, guarantee the stability and continuity of printed matter conveying.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and in particular to an anti-jamming paper discharge port for printing. Background Technology

[0002] In the paper feeding stage of printing production, paper jams have long constrained production efficiency and finished product quality. In traditional feeding structures, paper easily generates static electricity due to friction, causing it to attract or skew together, leading to jamming. The fixed spacing between the pressure rollers cannot accommodate printing materials of different thicknesses, and excessively tight or loose clamping can exacerbate paper jams. These problems not only increase downtime but can also cause paper loss and equipment wear. Therefore, there is an urgent need for a paper jam prevention feeding structure that can eliminate static interference and flexibly adjust the pressure roller spacing to ensure the stability and continuity of printed material transport.

[0003] Existing technology authorization announcement number CN218057826U discloses an anti-jamming paper discharge port for a digital printing device, including a support frame, a positioning rod, a crossbar, a lifting plate, and a positioning device. A sliding rod is fixedly connected to the top of the support frame, and a slider is welded to the top of the positioning rod. The slider is slidably connected to the sliding rod. An electric telescopic rod is provided on the inner wall of the positioning rod, and a push rod is rotatably connected to the outer wall of the electric telescopic rod. In this invention, after the digital printing device finishes printing, the paper exits from the discharge port and enters the feeding groove inside the crossbar. Then, the electric telescopic rod moves downwards, driving a push block downwards via the push rod. The push block then drives a pressure block to move to both sides, causing the bottom of the push block to fit against the top of the paper, thereby fixing the paper between the pressure block and the positioning block.

[0004] Existing technology uses a drive device to move a slider along the outer wall of a slide bar, thus pulling the paper outward and preventing it from getting stuck inside the discharge port, reducing the paper jam rate. However, in actual use, it is difficult to adjust the descent height of the pressure block according to the paper thickness, which can easily lead to problems such as paper tearing or insufficient pressure to pull the paper. In addition, this discharge port lacks anti-static measures for the paper, making it prone to misalignment due to electrostatic adsorption during stacking. To address these issues, we propose an anti-jamming paper discharge port for printing, which solves the problems of insufficient applicability and lack of anti-static measures, improving the applicability of the discharge port and expanding its application range. Utility Model Content

[0005] The purpose of this invention is to provide an anti-jamming paper feed port for printing, which solves the problems mentioned in the background art of insufficient applicability and lack of static electricity elimination measures in the feed ports of existing printing equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a paper-stopping outlet for printing, comprising a first mounting plate and a second mounting plate, wherein an upper pressure roller and a lower pressure roller are movably mounted between the first mounting plate and the second mounting plate, and a strip groove is provided at the upper end of both the first mounting plate and the second mounting plate. A limiting groove is provided on the inner wall of the strip groove, and a limiting slider is slidably mounted inside the limiting groove. An adjusting screw is rotatably connected to the top of the limiting slider, and the top of the adjusting screw passes through the strip groove and extends to the top of the first mounting plate and the second mounting plate. There are two limiting sliders, and an upper pressure roller is rotatably mounted between the two limiting sliders.

[0007] By rotating the adjusting screw, the limiting slider moves up and down along the limiting groove, thereby driving the upper pressure roller to move up and down synchronously, so as to adjust the clamping distance between the upper and lower pressure rollers.

[0008] The lower pressure roller is rotatably mounted at both ends on the side of the first mounting plate and the second mounting plate that is close to each other. A servo motor is fixedly mounted on the side of the second mounting plate away from the lower pressure roller. The output end of the servo motor is fixedly connected to one end of the lower pressure roller through a coupling.

[0009] The servo motor drives the lower pressure roller to rotate, so that when the paper is embedded in the gap between the upper pressure roller and the lower roller, it can be pushed onto the paper support plate at a uniform speed.

[0010] The first mounting plate and the bottom side of the second mounting plate are fixedly connected to a receiving rack. A paper tray is slidably installed inside the receiving rack. Three limiting slide rods are fixedly installed on the receiving rack. Three limiting protrusions are fixedly installed on the outer edge of the paper tray. The limiting slide rods pass vertically through the limiting protrusions and are slidably connected to the limiting protrusions. A return spring is sleeved on the outside of the limiting slide rod. The top end of the return spring is fixedly connected to the limiting protrusion, and its bottom end is fixedly connected to the surface of the receiving rack.

[0011] The paper tray is kept horizontal by the mutual limiting sliding action of the limiting slide rod and the limiting block. The installation of the return spring allows the paper tray to gradually move down according to the weight of the paper it supports, thus preventing the paper from being stacked too high.

[0012] The first ionizing air bar and the second ionizing air bar are fixedly installed between the first mounting plate and the second mounting plate. The two ends of the first ionizing air bar are fixed to the upper end of the side of the first mounting plate and the second mounting plate that are close to each other. The two ends of the second ionizing air bar are fixed to the lower end of the side of the first mounting plate and the second mounting plate that are close to each other. The nozzle of the first ionizing air bar is downward and tilted at 15 degrees towards the receiving rack. The nozzle of the second ionizing air bar is upward and tilted at 15 degrees towards the receiving rack.

[0013] By setting up the first and second ionizing air bars, static electricity on the surface of the paper during transport can be eliminated, avoiding skewing or displacement caused by the mutual adsorption of paper, and improving the continuity of paper output.

[0014] This invention provides a paper jam prevention outlet for printing. By rotating an adjusting screw, a limiting slider moves up and down along a limiting groove. This allows the gap between the upper and lower pressure rollers to be adjusted to slightly less than the paper thickness, based on the required paper thickness. This ensures effective paper clamping and avoids paper jams caused by excessively tight or loose clamping. The electric field generated by the first ionizer above the paper, combined with the second ionizer below, neutralizes the static charge on the paper surface, removing static electricity and preventing paper adsorption that could affect stacking and smooth paper output. This ensures the stability and continuity of printed material transport. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

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

[0017] Figure 2 This is a partial structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the material receiving rack structure of this utility model;

[0019] Figure 4 This utility model Figure 2 A magnified structural diagram of A in the middle.

[0020] In the diagram: 1. First mounting plate; 2. Second mounting plate; 3. Upper pressure roller; 4. Lower pressure roller; 5. Take-up rack; 6. Paper support plate; 7. First ionizing air bar; 8. Second ionizing air bar; 9. Strip groove; 10. Limiting slide groove; 11. Limiting slider; 12. Adjusting screw; 13. Servo motor; 14. Limiting slide bar; 15. Limiting protrusion; 16. Return spring. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] Please see Figures 1-4This utility model provides a technical solution: a paper jam prevention outlet for printing, including a first mounting plate 1 and a second mounting plate 2. An upper pressure roller 3 and a lower pressure roller 4 are movably mounted between the first mounting plate 1 and the second mounting plate 2. A strip groove 9 is provided on the upper end of both the first mounting plate 1 and the second mounting plate 2. A limiting groove 10 is provided on the inner wall of the strip groove 9. A limiting slider 11 is slidably mounted inside the limiting groove 10. An adjusting screw 12 is rotatably connected to the top of the limiting slider 11. The top of the adjusting screw 12 passes through the strip groove 9 and extends to the top of the first mounting plate 1 and the second mounting plate 2. There are two limiting sliders 11. The upper pressure roller 3 is rotatably mounted between the two limiting sliders 11. The two ends of the lower pressure roller 4 are rotatably mounted on the side of the first mounting plate 1 and the second mounting plate 2 that is close to each other. A servo motor 13 is fixedly mounted on the side of the second mounting plate 2 away from the lower pressure roller 4. The output end of the servo motor 13 is fixedly connected to one end of the lower pressure roller 4 through a coupling.

[0023] By rotating the adjusting screw 12, the limiting slider 11 is driven to move up and down along the limiting groove 10, and the gap between the upper pressure roller 3 and the lower pressure roller 4 is adjusted to be slightly smaller than the paper thickness. Then, the servo motor 13, the first ion air bar 7 and the second ion air bar 8 are connected to an external power source. The servo motor 13 drives the lower pressure roller 4 to rotate counterclockwise. When the printed paper is discharged from the printing paper outlet, one end of the paper is embedded in the gap between the upper pressure roller 3 and the lower pressure roller 4 and is continuously pushed towards the receiving rack 5 by the lower pressure roller 4.

[0024] A receiving rack 5 is fixedly connected to the bottom side of the first mounting plate 1 and the second mounting plate 2. A paper tray 6 is slidably installed inside the receiving rack 5. Three limiting slide rods 14 are fixedly installed on the receiving rack 5. Three limiting protrusions 15 are fixedly installed on the outer edge of the paper tray 6. The limiting slide rods 14 pass vertically through the limiting protrusions 15 and are slidably connected with the limiting protrusions 15. A return spring 16 is sleeved on the outside of the limiting slide rods 14. The top end of the return spring 16 is fixedly connected to the limiting protrusions 15, and its bottom end is fixedly connected to the surface of the receiving rack 5.

[0025] The paper tray 6 is kept horizontal by the mutual limiting sliding action of the limiting slide rod 14 and the limiting block. The installation of the return spring 16 allows the paper tray 6 to gradually move down with the weight of the paper it supports, thus preventing the paper from being stacked too high.

[0026] A first ionizing air bar 7 and a second ionizing air bar 8 are fixedly installed between the first mounting plate 1 and the second mounting plate 2. The two ends of the first ionizing air bar 7 are fixed to the upper end of the side of the first mounting plate 1 and the second mounting plate 2 that are close to each other. The two ends of the second ionizing air bar 8 are fixed to the lower end of the side of the first mounting plate 1 and the second mounting plate 2 that are close to each other. The nozzle of the first ionizing air bar 7 points downward and is tilted at 15 degrees toward the receiving rack 5. The nozzle of the second ionizing air bar 8 points upward and is tilted at 15 degrees toward the receiving rack 5.

[0027] The electric field effect generated by the first ion bar 7 placed above the paper and the second ion bar 8 placed below the paper can neutralize the static charge on the paper surface, thereby removing the static electricity of the paper and preventing the mutual adsorption between the papers from affecting the stacking effect.

[0028] Working principle: The first mounting plate 1 and the second mounting plate 2 are fixedly installed at the paper outlet of the printing press, so that the top surface of the lower pressure roller 4 is slightly lower than the paper outlet. Then, according to the required paper thickness, the adjusting screw 12 is rotated to drive the limiting slider 11 to move up and down along the limiting groove 10, adjusting the gap between the upper pressure roller 3 and the lower pressure roller 4 to be slightly smaller than the paper thickness. Then, the servo motor 13, the first ion air bar 7, and the second ion air bar 8 are connected to an external power supply. The servo motor 13 drives the lower pressure roller 4 to rotate counterclockwise. When the printed paper is discharged from the printing paper outlet, one end of the paper... The paper, embedded in the gap between the upper pressure roller 3 and the lower pressure roller 4, is continuously pushed towards the take-up rack 5 by the lower pressure roller 4. During the process of the paper being pushed onto the paper tray 6, the electric field effect generated by the first ionizer 7 positioned above the paper and the second ionizer 8 positioned below the paper neutralizes the static charge on the paper surface, thus removing static electricity and preventing the papers from adsorbing each other and affecting the stacking effect. The first ionizer 7 and the second ionizer 8 can be ST-DC-506D ionizers, or other suitable ionizers of the same type can be selected. After the static electricity is eliminated, the paper falls sequentially onto the paper tray 6. As the weight of the paper increases, the return spring 16 at the bottom of the paper tray 6 is compressed, causing the paper tray 6 to move downwards, thus preventing clogging caused by excessively high paper stacking.

[0029] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A printing anti-jamming paper outlet, comprising a first mounting plate (1) and a second mounting plate (2), characterized in that: An upper pressure roller (3) and a lower pressure roller (4) are movably mounted between the first mounting plate (1) and the second mounting plate (2); The first mounting plate (1) and the second mounting plate (2) are fixedly connected to the bottom side of the receiving rack (5), and the receiving rack (5) is slidably installed with a paper support plate (6); A first ion air bar (7) and a second ion air bar (8) are fixedly installed between the first mounting plate (1) and the second mounting plate (2).

2. The anti-jamming paper feed port for printing according to claim 1, characterized in that: The first ion air bar (7) is fixed at both ends to the upper end of the first mounting plate (1) and the second mounting plate (2) on the side close to each other, and the second ion air bar (8) is fixed at both ends to the lower end of the first mounting plate (1) and the second mounting plate (2) on the side close to each other.

3. The anti-jamming paper feed port for printing according to claim 2, characterized in that: The nozzle of the first ion bar (7) is downward and tilted 15 degrees toward the receiving rack (5), while the nozzle of the second ion bar (8) is upward and tilted 15 degrees toward the receiving rack (5).

4. The anti-jamming paper feed port for printing according to claim 1, characterized in that: The first mounting plate (1) and the second mounting plate (2) are both provided with strip grooves (9) at their upper ends. The inner wall of the strip groove (9) is provided with a limiting groove (10). A limiting slider (11) is slidably installed inside the limiting groove (10). An adjusting screw (12) is rotatably connected to the top of the limiting slider (11). The top of the adjusting screw (12) passes through the strip groove (9) and extends to the top of the first mounting plate (1) and the second mounting plate (2). There are two limiting sliders (11). An upper pressure roller (3) is rotatably installed between the two limiting sliders (11).

5. The anti-jamming paper feed port for printing according to claim 1, characterized in that: The two ends of the lower pressure roller (4) are rotatably mounted on the side close to the first mounting plate (1) and the second mounting plate (2). A servo motor (13) is fixedly mounted on the side of the second mounting plate (2) away from the lower pressure roller (4). The output end of the servo motor (13) is fixedly connected to one end of the lower pressure roller (4) through a coupling.

6. The anti-jamming paper feed port for printing according to claim 1, characterized in that: Three limiting slide rods (14) are fixedly installed on the receiving rack (5), and three limiting protrusions (15) are fixedly installed on the outer edge of the paper tray (6). The limiting slide rods (14) pass vertically through the limiting protrusions (15) and are slidably connected with the limiting protrusions (15). A return spring (16) is sleeved on the outside of the limiting slide rods (14). The top end of the return spring (16) is fixedly connected to the limiting protrusions (15), and its bottom end is fixedly connected to the surface of the receiving rack (5).

Images