Paper feeding device

Abstract

The utility model provides a paper feeding device which comprises a stock bin used for placing a paper pile; the adsorption feeding mechanism is located above the stock bin and used for adsorbing paper from a paper pile and feeding the paper to a conveying belt located on one side of the stock bin; the paper guiding and positioning mechanism is located on the side, close to the stock bin, of the conveying belt and used for guiding and positioning the paper conveyed by the adsorption and feeding mechanism to the conveying belt. The lifting adjusting mechanism is used for adjusting the height of the stock bin; an ultrasonic sensor; and the controller is electrically connected with the ultrasonic sensor, the adsorption feeding mechanism and the paper guiding and positioning mechanism. The height position of the stock bin is adjusted through the lifting adjusting mechanism, it is ensured that paper in the stock bin is matched with the adsorption feeding mechanism through the paper guiding and positioning mechanism, the paper can be separated one by one and fed and conveyed smoothly, and automation of paper feeding is achieved.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, and more specifically, to a paper feeding device. Background Technology

[0002] Printed products, such as newspapers, books, magazines, reports, and packaging, play an indispensable role in people's daily lives and work. However, during the paper printing process, various factors such as environmental pollution, damage to printing equipment, and improper operation by printing workers often result in various defects on the surface of the printed products. These defects not only reduce the quality of the paper and the user experience but may also affect the appearance and texture of the product, thereby reducing economic benefits. Therefore, the detection of paper defects becomes crucial in the papermaking process.

[0003] In the printing industry, defect detection is a crucial step in ensuring the quality of printed materials. Traditional manual inspection is one of the most common methods for surface defect detection. However, with the increasing levels of industrialization and automation, traditional manual inspection methods have revealed many limitations. The most prominent problem is the low efficiency of manual operation, making it unsuitable for large-scale industrial production. Therefore, there is a need to design an efficient and reliable automated inspection solution for the printing industry. Before inspection, the sheets of printed paper to be inspected need to be separated one by one and fed to the inspection device. Therefore, paper feeding is a necessary step for automation, requiring the development of an automatic paper feeding device. Utility Model Content

[0004] The purpose of this invention is to provide a paper feeding device that can separate sheets of paper and send them to a detection device, thereby automating the paper feeding process.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A paper dispensing device, comprising:

[0007] A silo is used to store stacks of paper.

[0008] An adsorption and feeding mechanism, located above the hopper, is used to adsorb paper from the paper pile and feed it onto a conveyor belt located on one side of the hopper;

[0009] The paper guiding and positioning mechanism is located on the side of the conveyor belt near the hopper, and is used to guide and position the paper sent by the adsorption and dispensing mechanism onto the conveyor belt.

[0010] A lifting and adjusting mechanism is used to adjust the height of the hopper;

[0011] Ultrasonic sensor; used to detect the thickness of the paper being adsorbed.

[0012] The controller is electrically connected to the ultrasonic sensor, the adsorption feeding mechanism, and the paper guiding and positioning mechanism.

[0013] When using this invention, the paper to be tested is stacked on the hopper. The height of the hopper is adjusted using a lifting mechanism according to the height of the paper stack, so that the adsorption and dispensing mechanism can adsorb the paper. The adsorption and dispensing mechanism picks up a sheet of paper from the stack and moves it to the paper guiding and positioning mechanism. The paper is guided and positioned on the conveyor belt by the paper guiding and positioning mechanism, and then sent to the target location by the conveyor belt.

[0014] The adsorption and dispensing mechanism of this utility model includes a support, an adsorption mechanism disposed on the support, and a moving mechanism that drives the support to reciprocate; the adsorption mechanism and the moving mechanism are respectively electrically connected or wirelessly connected to the controller.

[0015] The moving mechanism includes a guide rail, a slider mounted on the guide rail, and a drive motor that drives the slider to move along the guide rail; the slider is connected and fixed to the bracket. The function of the moving mechanism is to move the adsorption and dispensing mechanism from one position to another to complete the adsorption and conveying of paper.

[0016] The adsorption mechanism of this utility model is a pneumatic suction cup, which includes a suction cup, an air source connected to the suction cup, and an air pressure control unit for the air pressure of the suction cup; the suction cup is mounted on the bracket.

[0017] The paper guiding and positioning mechanism of this utility model includes a first roller and a pressing mechanism for pressing down the first roller. The pressing mechanism is connected to the controller. The first roller is located above the edge of the conveyor belt near the hopper to guide the paper adsorbed by the adsorption and dispensing mechanism to move to the conveyor belt. The pressing mechanism presses down the first roller to stick the paper onto the conveyor belt for conveying the paper.

[0018] The paper guiding and positioning mechanism of this utility model further includes an elastic mechanism connected to the first roller. The elastic mechanism can be used to adjust the pressure of the first roller pressing on the belt, and can also reset the first roller after pressing. Optionally, the elastic mechanism is a spring component.

[0019] The paper guiding and positioning mechanism of this utility model includes a second roller, which is disposed above the conveyor belt. The second roller is in contact with the conveyor belt or the distance between the second roller and the conveyor belt does not exceed the thickness of the paper, so that the paper can better adhere to the conveyor belt.

[0020] In one embodiment, the paper guiding and positioning mechanism includes at least two first rollers, which are respectively located on both sides of the conveyor belt, corresponding to the two sides of the paper to be guided. The second roller is located in the middle of the conveyor belt to conform to the middle portion of the paper to be guided.

[0021] Due to static electricity and other reasons, the paper may stick together, resulting in double sheets. Therefore, this invention uses an ultrasonic sensor to detect the paper with ultrasound each time it is fed. If the thickness exceeds one sheet, the feeding process is automatically paused. Optionally, the ultrasonic sensor can be installed at the adsorption feeding mechanism or between the conveyor belt and the hopper.

[0022] The lifting and adjusting mechanism of this utility model includes a lead screw, a slide block mounted on the lead screw, and a lead screw motor that drives the lead screw to rotate and move the slide block up and down; the slide block is fixedly connected to the hopper; and the lead screw motor is electrically connected to the controller.

[0023] The lifting and adjusting mechanism also includes a photoelectric sensor for detecting the height of the paper stack in the hopper; the photoelectric sensor is connected to the controller. By configuring the photoelectric sensor to detect the height of the paper stack in the hopper, and cooperating with the lifting and adjusting mechanism, the hopper can be raised or lowered in a timely manner, thus automatically adjusting the height of the paper stack. Furthermore, when the paper is dispensing out, dispensing automatically stops.

[0024] In some cases, there may be a certain distance between the hopper and the conveyor belt. Before all the paper being absorbed and transferred falls onto the conveyor belt, some may sag into the gap. To solve this problem, as one embodiment, this invention also includes a support strip located between the hopper and the conveyor belt to support the portion of the paper that is not on the conveyor belt, keeping the paper as flat as possible.

[0025] In one embodiment, this invention can integrate a conveyor belt. The paper dispensing device also includes a conveyor belt adjacent to the hopper, which is used to transport the paper dispensed by the adsorption dispensing mechanism for connection with other mechanisms.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] This invention uses a lifting and adjusting mechanism to adjust the height of the hopper, and a paper guiding and positioning mechanism to ensure that the paper in the hopper matches the adsorption and dispensing mechanism. This design ensures that paper materials of different sizes and quantities can be effectively dispensed onto the conveyor belt, achieving smooth paper dispensing and conveying. At the same time, this invention also effectively reduces paper wear, deformation, and glue overflow, maximizing the quality of the paper products. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the paper feeding device (first-person perspective).

[0029] Figure 2 This is a schematic diagram of the paper feeding device (second perspective).

[0030] Figure 3 This is a schematic diagram of the paper feeding device (third-person perspective).

[0031] Figure 4 This is a schematic diagram of part A of the paper feeding device.

[0032] Figure 5 This is a schematic diagram of the paper guiding and positioning mechanism. Detailed Implementation

[0033] The present invention will be further described below with reference to specific embodiments.

[0034] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "top", "bottom", "inner", "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent.

[0035] Furthermore, if terms such as "first" or "second" are used for descriptive purposes only, they are mainly used to distinguish different devices, components or parts (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, components or parts, and should not be construed as indicating or implying relative importance.

[0036] Example 1

[0037] like Figures 1-5As shown, a paper feeding device includes a hopper 100, an adsorption feeding mechanism 200, a paper guiding and positioning mechanism 300, a lifting and adjusting mechanism 400, an ultrasonic sensor 500, and a controller. The controller is electrically connected to the ultrasonic sensor, the adsorption feeding mechanism 200, and the paper guiding and positioning mechanism 300.

[0038] The hopper 100 is used to hold stacks of paper. The lifting and adjusting mechanism 400 is used to adjust the height of the hopper 100. The ultrasonic sensor 500 can be installed at the adsorption and dispensing mechanism 200, or between the conveyor belt and the hopper 100. During dispensing, the paper passes through the ultrasonic sensor 500 for ultrasonic detection; if the thickness exceeds one sheet, dispensing automatically stops.

[0039] like Figure 1 and 4 As shown, the adsorption and dispensing mechanism 200 is located above the hopper and is used to adsorb paper from the paper pile and deliver it to the conveyor belt located on one side of the hopper. The adsorption and dispensing mechanism 200 includes a support 210, an adsorption mechanism 220 mounted on the support 210, and a moving mechanism 230 that drives the support to reciprocate. The adsorption mechanism 220 and the moving mechanism 230 are electrically or wirelessly connected to the controller. The adsorption mechanism 220 is a pneumatic suction cup, which includes a suction cup, an air source connected to the suction cup, and an air pressure control unit for the air pressure of the suction cup. The suction cup is mounted on the support.

[0040] like Figure 2 and 5 As shown, the paper guiding and positioning mechanism 300 is located on the side of the conveyor belt near the hopper 100, and is used to guide and position the paper delivered by the adsorption and dispensing mechanism 200 onto the conveyor belt. The paper guiding and positioning mechanism 300 includes a first roller 310 and a pressing mechanism 320 for pressing down the first roller 310. The pressing mechanism 320 is connected to a controller. The first roller 310 is located above the edge of the conveyor belt near the hopper 100 to guide the paper adsorbed by the adsorption and dispensing mechanism 200 to move onto the conveyor belt. The pressing mechanism 320 presses down the first roller 310 to adhere the paper to the conveyor belt for paper transport. In this embodiment, the paper guiding and positioning mechanism 300 has at least two first rollers 310, located on both sides of the conveyor belt, corresponding to the two sides of the paper to be guided. Furthermore, the paper guiding and positioning mechanism 300 also includes an elastic mechanism 330, which is connected to the first roller 310. The elastic mechanism 330 can be used to adjust the pressure of the first roller pressing on the belt, and can also reset the first roller after it has been pressed down. In one embodiment, the elastic mechanism 330 is a spring component.

[0041] like Figure 3As shown, the lifting and adjusting mechanism 400 includes a lead screw 410, a slide 420 mounted on the lead screw 410, and a lead screw motor 430 that drives the lead screw 410 to rotate and move the slide 420 up and down. The slide 420 is fixedly connected to the hopper 100. The lead screw motor 430 is electrically connected to the controller. Further, the lifting and adjusting mechanism 400 may also include a photoelectric sensor for detecting the height of the paper stack in the hopper. The photoelectric sensor is connected to the controller and is used to detect the height of the paper stack in the hopper 100. By cooperating with the lead screw motor, the hopper is raised and lowered in a timely manner, thereby automatically adjusting the height of the paper stack.

[0042] Example 2

[0043] Unlike Embodiment 1, the paper guiding and positioning mechanism 300 in this embodiment includes a second roller. The second roller is positioned above the conveyor belt, on the side of the first roller facing the paper conveying direction. The second roller contacts the conveyor belt, or the distance between the second roller and the conveyor belt does not exceed the thickness of the paper, so that the paper adheres better to the conveyor belt. The second roller is located in the middle of the conveyor belt to adhere to the middle part of the paper to be guided.

[0044] Unless otherwise mentioned, the other components and connections in this embodiment are the same as or similar to those in Embodiment 1.

[0045] Example 3

[0046] Unlike Embodiment 1 or 2, the paper feeding device in this embodiment also includes a support bar located between the hopper 100 and the conveyor belt to support the portion of the paper that is not on the conveyor belt, and to keep the paper on a flat plane as much as possible.

[0047] Unless otherwise mentioned, the other components and connections in this embodiment are the same as or similar to those in Embodiment 1.

[0048] Example 4

[0049] Unlike Embodiments 1 or 3, this embodiment also includes a conveyor belt adjacent to the hopper 100, which is used to transport the paper sent by the adsorption dispensing mechanism.

[0050] Unless otherwise mentioned, the other components and connections in this embodiment are the same as or similar to those in Embodiment 1 or 3.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A paper dispensing device, characterized in that, include: A silo is used to store stacks of paper. An adsorption and feeding mechanism, located above the hopper, is used to adsorb paper from the paper pile and feed it onto a conveyor belt located on one side of the hopper; The paper guiding and positioning mechanism is located on the side of the conveyor belt near the hopper, and is used to guide and position the paper sent by the adsorption and dispensing mechanism onto the conveyor belt. A lifting and adjusting mechanism is used to adjust the height of the hopper; Ultrasonic sensor; used to detect the thickness of the paper being adsorbed. The controller is electrically connected to the ultrasonic sensor, the adsorption feeding mechanism, and the paper guiding and positioning mechanism.

2. The paper feeding device according to claim 1, characterized in that, The adsorption and dispensing mechanism includes a support, an adsorption mechanism mounted on the support, and a moving mechanism that drives the support to reciprocate; the adsorption mechanism and the moving mechanism are respectively electrically or wirelessly connected to the controller.

3. The paper feeding device according to claim 2, characterized in that, The adsorption mechanism is a pneumatic suction cup, which includes a suction cup, an air source connected to the suction cup, and an air pressure control unit for controlling the air pressure of the suction cup; the suction cup is mounted on the bracket.

4. The paper feeding device according to claim 1, characterized in that, The paper guiding and positioning mechanism includes a first roller and a pressing mechanism for pressing down the first roller. The pressing mechanism is connected to the controller. The first roller is located above the edge of the conveyor belt near the hopper to guide the paper adsorbed by the adsorption and dispensing mechanism to move to the conveyor belt, and the pressing mechanism presses down the first roller to stick the paper onto the conveyor belt.

5. The paper feeding device according to claim 4, characterized in that, The paper guiding and positioning mechanism further includes an elastic mechanism; the elastic mechanism is connected to the first roller.

6. The paper feeding device according to claim 4 or 5, characterized in that, The paper guiding and positioning mechanism includes a second roller, which is disposed above the conveyor belt. The second roller is in contact with the conveyor belt or the distance between the second roller and the conveyor belt does not exceed the thickness of the paper, so that the paper adheres better to the conveyor belt.

7. The paper feeding device according to claim 1, characterized in that, The ultrasonic sensor is located at the adsorption and feeding mechanism, or between the conveyor belt and the hopper.

8. The paper feeding device according to claim 1, characterized in that, It also includes a support bar located between the hopper and the conveyor belt.

9. The paper feeding device according to claim 1, characterized in that, It also includes a conveyor belt adjacent to the hopper, which is used to transport the paper sent by the adsorption dispensing mechanism.

10. The paper feeding device according to claim 1, characterized in that, The lifting and adjusting mechanism includes a lead screw, a slide block mounted on the lead screw, and a lead screw motor that drives the lead screw to rotate and move the slide block up and down; the slide block is fixedly connected to the hopper; and the lead screw motor is electrically connected to the controller.

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