A paper positioning device for a gluing machine

Abstract

The utility model discloses a kind of paper positioning devices of gluing machine, belong to printing technical field, including pair of setting guide rail, pair of setting roller, cross bar, air nozzle and air pump, each guide rail inside is equipped with pair of setting roller, cross bar is slidably connected in pair of setting guide rail, air nozzle is located in the inside of pair of setting guide rail, below roller, the opening direction of air nozzle is perpendicular to the running direction of guide rail, and towards upwards, air pump is connected air nozzle. The utility model is equipped with pair of setting guide rail and roller, and the air floating effect formed by air nozzle is combined, can effectively guide paper along correct path transmission, air nozzle supports paper by air floating principle, avoid the direct friction of traditional mechanical guide rail or roller and paper, reduce the wrinkle, scratch or surface damage caused by physical contact, especially suitable for processing light or high-gloss paper.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, specifically to a paper positioning device for a glue coating machine. Background Technology

[0002] Glue coating machines are widely used to evenly apply adhesive to the surface of paper to enhance its adhesion and facilitate subsequent processing. When paper enters the coating unit, it is typically directly conveyed to the coating position, lacking an effective positioning and guiding mechanism. This causes the paper to easily shift or skew during transport, especially under the action of the pressure rollers and coating rollers. The paper may wrinkle or fold due to inaccurate positioning. These wrinkled or folded areas cannot be evenly coated with adhesive because they are obstructed, resulting in uneven coating and affecting the quality of subsequent processing. When users process the coated paper, tearing open the folded areas to align with other sheets exposes uncoated areas, leading to decreased adhesion and severely impacting the quality of the final product.

[0003] To solve the paper positioning problem, existing technologies often use simple mechanical guides or rollers to guide the paper. However, these devices are usually fixed or have limited adjustment range and are prone to causing secondary damage to the paper. Therefore, there is an urgent need for a device that can improve paper positioning accuracy by dynamically adjusting the guide to ensure that the paper maintains the correct path before entering the glue coating area, reducing deviation and wrinkles, thereby improving glue coating quality and production efficiency. Utility Model Content

[0004] One objective of this invention is to address the positioning problem of a glue applicator by modifying the positioning device to avoid direct physical contact with the paper, thereby providing a paper positioning device for a glue applicator.

[0005] Specifically, this utility model discloses a paper positioning device for a glue coating machine, comprising:

[0006] Guide rails are arranged in pairs;

[0007] The rollers are arranged in pairs, and each guide rail has a pair of rollers on its inner side;

[0008] The crossbar is slidably connected to a pair of guide rails.

[0009] The air nozzle is located on the inner side of the paired guide rails, below the rollers. The opening direction of the air nozzle is perpendicular to the running direction of the guide rails and faces upwards.

[0010] Air pump, connected to air nozzle.

[0011] Furthermore, the air nozzles include multiple nozzles arranged in rows and columns.

[0012] Furthermore, it also includes a nozzle bracket, to which the nozzle is connected.

[0013] Furthermore, all of the aforementioned air nozzles are connected to the air pump via air pipes.

[0014] Furthermore, the air pipe is equipped with an air valve, which has an air inlet and multiple air outlets.

[0015] Furthermore, each of the guide rails is provided with a slider, and the pairs of sliders connect the two ends of the crossbar;

[0016] The crossbar is equipped with clamps for holding the paper.

[0017] Furthermore, the rotation axis of the roller is perpendicular to the extension direction of the guide rail.

[0018] Furthermore, the rollers are provided in multiple pairs, and the multiple pairs of rollers are equidistantly arranged along the direction of the track.

[0019] Furthermore, the spacing between all the rollers is the same.

[0020] Furthermore, the number of rollers is even.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This invention uses paired guide rails and rollers, combined with the air-floating effect created by the air nozzle, to effectively guide the paper along the correct path. The air nozzle supports the paper through the air-floating principle, avoiding direct friction between the paper and traditional mechanical guide rails or rollers, reducing wrinkles, scratches or surface damage caused by physical contact, and is particularly suitable for processing thin or high-gloss paper.

[0023] In this invention, the sliding connection design between the crossbar and the slider allows the guide rail to dynamically adjust the spacing according to the paper width, adapting to different paper sizes and enhancing the versatility and flexibility of the device.

[0024] In this invention, the modular design of the nozzle bracket and air tube facilitates installation and disassembly, and the setting of the air valve further optimizes the airflow distribution, reducing maintenance difficulty and operating costs.

[0025] In this invention, multiple pairs of equally spaced rollers work in conjunction with the guide rail to ensure that the paper is still slightly constrained in the air-floating state, taking into account both low resistance and high-precision guidance, thereby improving the overall production efficiency and coating quality of the coating machine.

[0026] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0027] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0028] Figure 1 This is a perspective view of a paper positioning device for a glue coating machine in one or more embodiments of the present utility model.

[0029] Figure 2 This is a top view schematic diagram of the paper positioning device of the glue coating machine in one or more embodiments of the present utility model;

[0030] Figure 3 This is a left-side view of the paper positioning device for a glue applicator in one or more embodiments of the present invention.

[0031] In the picture:

[0032] 1-Guide rail; 11-Guide rail bracket; 2-Slider; 3-Crossbar; 31-Base; 32-Crossbar body; 4-Roller; 5-Air nozzle; 51-Air nozzle bracket. Detailed Implementation

[0033] In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0034] Unless otherwise expressly 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 part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Please refer to Figures 1-3This utility model provides a paper positioning device for a glue coating machine, applicable to the printing and paper processing fields. It is used to position and stably transport paper in a glue coating machine, ensuring the paper maintains the correct path before entering the coating area, avoiding deviation and wrinkles, thus guaranteeing uniform glue application and product quality. The device includes paired guide rails 1, paired rollers 4, a crossbar 3, an air nozzle, and an air pump. Each guide rail 1 has a paired roller 4 on its inner side. The crossbar 3 is slidably connected to the paired guide rails 1. The air nozzle is located on the inner side of the paired guide rails 1, below the rollers 4, with its opening direction perpendicular to the running direction of the guide rails 1 and facing upwards. The air pump is connected to the air nozzle. This embodiment uses a pair of guide rails 1 and rollers 4, combined with the air flotation effect formed by the air nozzle, to effectively guide the paper to be transported along the correct path. The air nozzle supports the paper through the air flotation principle, avoiding direct friction between the traditional mechanical guide rails 1 or rollers 4 and the paper, reducing wrinkles, scratches or surface damage caused by physical contact, and is particularly suitable for processing thin or high-gloss paper.

[0036] According to one embodiment of this utility model, the guide rails 1 are paired elongated structures extending parallel to the paper transport direction and fixed to the workbench or floor by guide rail brackets 11. The inner surface of the guide rails 1 defines the paper transport path and restricts the lateral deviation of the paper. The surface of the guide rails 1 is polished and coated with a low-friction coating to reduce possible contact friction with the paper edges. The size and material of the guide rails 1 are selected according to the design requirements of the glue applicator to ensure sufficient rigidity and stability.

[0037] According to one embodiment of this utility model, the guide rail 1 is also slidably connected to the slider 2, forming a guide rail 1 slider 2 mechanism. It is understood that this guide rail 1 slider 2 mechanism can use an existing linear guide rail 1, and the slider 2 is made of high-strength material with embedded ball bearings to ensure smooth sliding of the guide rail 1 on the crossbar 3. The crossbar 3 is connected to the guide rail 1 via the slider 2, and the crossbar 3 includes a base 31 and a crossbar body 32. The base 31 is fixed to the slider 2, and the crossbar body 32 is connected to the base 31. The crossbar 3 is also equipped with a clamp for fixing the paper when it enters the transport path, thus driving the paper movement. The clamp uses a lightweight spring clamp or a pneumatic clamping device, and its surface is covered with a soft material to avoid indentation or damage to the paper.

[0038] According to one embodiment of this utility model, each guide rail 1 has a plurality of paired rollers 4 on its inner side. The rotation axis of the rollers 4 is perpendicular to the extension direction of the guide rail 1. The movement range of the paper is defined between the two pairs of rollers 4, ensuring that the paper is subject to slight lateral constraint during transport. The rollers 4 are made of low-friction material with a smooth surface and are polished. The number of rollers 4 is even, and they are equidistantly distributed along the extension direction of the guide rail 1, with uniform spacing between adjacent pairs of rollers 4. The rollers 4 are connected to the guide rail 1 through roller 4 frames to ensure flexible rotation and reduce frictional resistance with the edge of the paper.

[0039] According to one embodiment of the present invention, the following cooperation relationship needs to be met between the crossbar body 32 and the paired rollers 4: the working surface of the crossbar body 32 that holds the paper needs to be located between the two rollers 4 so that the crossbar body 32 can pull the paper to move between the two rollers 4.

[0040] According to one embodiment of the present invention, the paired rollers 4 form a component. The rollers 4 include a first roller 4, a second roller 4, and a roller 4 frame. The roller 4 frame is U-shaped, that is, the roller 4 frame is rectangular in shape. The rectangular frame has a notch in the middle. The first roller 4 and the second roller 4 are rollers of the same size. The gap between the first roller 4 and the second roller 4 is located within the notch.

[0041] According to one embodiment of the present invention, a pair of rollers 4 are fixedly connected to the bottom of the guide rail 1 through their roller 4 frames. Multiple pairs of rollers 4 are equidistantly arranged below each guide rail 1. When the paper moves under the traction of the crossbar 3, it passes through the multiple pairs of rollers 4 in sequence to complete the movement.

[0042] According to one embodiment of this utility model, the nozzle 5 is located inside the guide rail 1, below the roller 4, with its opening direction perpendicular to the running direction of the guide rail 1 and facing upwards. The nozzle 5 is fixed by a nozzle bracket 51, which is grid-shaped, with fixing positions for the nozzle 5 between the grids. The nozzles 5 are arranged in rows and columns, with the nozzle holes arranged in a matrix to ensure uniform airflow distribution. The nozzles 5 are connected to an air pump via an air pipe made of pressure-resistant material. The air pump provides stable compressed air to the nozzles 5, forming an air cushion that maintains a small gap between the paper and the inside of the guide rail 1, reducing frictional resistance. An air valve is provided on the air pipe, which has one air inlet and multiple air outlets. The airflow distribution is adjusted by the control system to ensure uniform airflow. The air pump adopts a low-noise design, with stable airflow output, and the air pressure can be adjusted according to the paper characteristics and running speed.

[0043] According to one embodiment of this utility model, to further improve positioning accuracy, the device is equipped with a photoelectric sensor, installed on the front end of the guide rail 1 or the crossbar 3, for real-time monitoring of the paper edge position. The sensor signal is fed back to the control system, which drives the slider 2 via a servo motor to dynamically adjust the spacing of the guide rail 1. The servo motor ensures rapid response and precise positioning. In addition, the device can also be equipped with a pressure sensor to monitor changes in the air pressure of the air nozzle 5. If the air pressure is abnormal, the control system will automatically adjust the opening of the air valve to ensure stable airflow.

[0044] According to one embodiment of this utility model, the operator or control system adjusts the spacing of the guide rails 1 according to the paper width, and the slider 2 slides on the crossbar 3 to ensure that the guide rails 1 are adapted to the paper size. During the operation of the glue coater, the paper is pulled into the transport path by the conveyor belt or the crossbar 3. The clamps on the crossbar 3 initially clamp the paper. The air nozzle 5 sprays a uniform airflow through the air pump and air valve, forming an air cushion to support the paper and reduce frictional resistance. The roller 4 provides slight lateral restraint to ensure that the paper is transported along the correct path. The photoelectric sensor monitors the paper position in real time. If a deviation is detected, the control system adjusts the position of the guide rails 1 or the opening of the air valve via the servo motor to correct the paper path. The paper enters the glue coating area smoothly in an air-floating state, avoiding deviation and wrinkles, thereby ensuring the uniformity of glue coating and product quality.

[0045] According to one embodiment of this invention, the roller 4 is connected to the guide rail via a spring or pneumatic device, allowing the lateral pressure of the roller 4 to be adjustable to accommodate different paper thicknesses and materials. The spring or pneumatic device ensures that thin paper is not indented, while thicker paper is adequately constrained. The roller pressure is adjusted via a control system, which automatically adjusts according to paper characteristics to ensure optimal lateral guidance. During operation, the pressure of the roller 4 is automatically adjusted according to paper characteristics, ensuring no damage to thin paper and no shifting of thicker paper. This design is suitable for a wider range of paper types and more demanding production environments.

[0046] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A paper positioning device for a glue coating machine, characterized in that, include: Paired guide rails; The rollers are arranged in pairs, and each guide rail has a pair of rollers on its inner side; The crossbar is slidably connected to a pair of guide rails. The air nozzle is located on the inner side of the paired guide rails, below the rollers. The opening direction of the air nozzle is perpendicular to the running direction of the guide rails and faces upwards. Air pump, connected to air nozzle.

2. The paper positioning device for a glue coating machine according to claim 1, characterized in that, The air nozzles include multiple nozzles arranged in rows and columns.

3. The paper positioning device for a glue coating machine according to claim 1 or 2, characterized in that, It also includes a nozzle bracket, the nozzle being connected to the nozzle bracket.

4. The paper positioning device for a glue coating machine according to claim 3, characterized in that, Each of the aforementioned air nozzles is connected to the air pump via an air pipe.

5. The paper positioning device for a glue coating machine according to claim 4, characterized in that, The air pipe is equipped with an air valve, which has an air inlet and multiple air outlets.

6. The paper positioning device for a glue coating machine according to claim 1, characterized in that, Each of the guide rails is equipped with a slider, and the pairs of sliders connect the two ends of the crossbar; The crossbar is equipped with clamps for holding the paper.

7. The paper positioning device for a glue coating machine according to claim 1, characterized in that, The rotation axis of the roller is perpendicular to the extension direction of the guide rail.

8. The paper positioning device for a glue coating machine according to claim 1 or 7, characterized in that, The rollers are provided in multiple pairs, and the multiple pairs of rollers are equidistantly arranged along the direction of the extension of the guide rail.

9. The paper positioning device for a glue coating machine according to claim 1 or 7, characterized in that, The spacing between each pair of rollers is the same.

10. The paper positioning device for a glue coating machine according to claim 1, characterized in that, The number of rollers is even.

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