A sheet paper feeding and conveying device

Abstract

This utility model relates to the field of paper bag machines, and discloses a sheet paper feeding and conveying device, including a frame, on which a paper feeding mechanism, a paper feeding roller, a discharge conveying roller, and an accelerating roller are arranged. The paper feeding mechanism is used to output sheet paper for forming bags, whether stacked or not; the paper feeding roller feeds the paper from the paper feeding mechanism one sheet at a first speed to a paper conveying path located downstream by rotating; the discharge conveying roller is arranged on the paper conveying path, and the accelerating roller is located downstream of the paper feeding roller; the accelerating roller is located above the paper, between the paper feeding roller and the discharge conveying roller on the paper conveying path, and is equipped with an accelerating wheel that accelerates the paper through friction. The accelerating roller drives the accelerating wheel to rotate and feed the paper downstream at a second speed, wherein the second speed is greater than the first speed; this utility model creates a speed difference between the preceding and following sheets of paper, which can quickly pull the preceding sheet downstream, thus increasing the spacing between each sheet of paper.

Description

Technical Field

[0001] This utility model relates to the field of paper bag making machines, and in particular to a sheet paper feeding and conveying device. Background Technology

[0002] In the bag manufacturing process, different bag sizes have different requirements for paper, especially in terms of length. Traditional paper conveying devices struggle to meet the needs of producing bags of varying lengths. Furthermore, during paper conveying, continuous sheets often lack proper spacing before entering the main machine, resulting in partial overlap. This is particularly true after continuous rolls of paper have undergone die-cutting, where the high cutting speed makes overlap highly likely. This overlap can cause problems in subsequent bag forming processes, affecting bag quality and equipment efficiency. Therefore, a paper conveying device is needed that can accommodate bags of different lengths and create sufficient spacing between the sheets before they enter the main machine. Utility Model Content

[0003] This invention addresses the problem in the existing technology that it is difficult to meet the production needs of paper bags of different lengths, as well as the disadvantage that the paper cannot be effectively spaced before entering the main machine, by providing a sheet paper feeding and conveying device.

[0004] To solve the above-mentioned technical problems, this utility model achieves its solution through the following technical solution:

[0005] A sheet paper feeding and conveying device includes a frame, on which a paper feeding mechanism, a paper feeding roller, a discharge conveying roller, and an accelerating roller are arranged. The paper feeding mechanism is used to output sheet paper, whether stacked or not, for forming bags. The paper feeding roller, by rotating, feeds the paper from the paper feeding mechanism sheet by sheet at a first speed to a paper conveying path located downstream. The discharge conveying roller is arranged on the paper conveying path, and the accelerating roller is located downstream of the paper feeding roller. The accelerating roller is located above the paper and is positioned between the paper feeding roller and the discharge conveying roller on the paper conveying path. The accelerating roller is equipped with an accelerating wheel that accelerates the paper through friction. The accelerating roller is connected to an acceleration power source for driving the accelerating roller to rotate and feed the paper out to the paper conveying path located downstream at a second speed.

[0006] The second speed is greater than the first speed;

[0007] The distance between the projections of the center lines of the feed roller and the acceleration roller on the same horizontal plane is the first distance *m*, and the distance between the projections of the center lines of the feed roller and the discharge conveyor roller on the same horizontal plane is the second distance *n*. The first distance *m* is less than the length of the paper sheet, and *n* is greater than the length of the paper sheet. A mismatch between the roller spacing and the paper length can cause paper jams or tearing; therefore, the second distance *n* must be greater than the length of the paper sheet. After accelerating the previous sheet of paper, the next sheet maintains the same conveying speed as the feed roller, allowing the sheets to separate naturally. The purpose is to create a speed difference between the sheets, quickly pulling the previous sheet downstream and increasing the spacing between each sheet.

[0008] Preferably, the accelerating wheel is equipped with an arc-shaped accelerating section for contacting the paper surface.

[0009] Preferably, when the end of the paper near the discharge conveyor roller reaches below the acceleration roller, the leading edge of the paper is flush with the initial end of the arc-shaped acceleration section. The paper contacts the arc-shaped acceleration section until its end leaves the paper surface, and the arc length between the initial and final ends of the arc-shaped acceleration section is no longer than the length of the paper sheet. This ensures that the paper is accelerated and pulled away at the appropriate time, avoiding unnecessary jamming or compression during the conveying process and guaranteeing smooth paper delivery.

[0010] As a preferred option, the acceleration power source is a servo motor. A servo motor can more precisely adjust the speed of the acceleration roller according to the length of the paper, facilitating the alignment of the initial position of the curved acceleration section with the front end of the paper. It also allows for flexible adjustment of the paper's feed speed based on actual conditions, better meeting diverse production needs.

[0011] Preferably, the conveying speed of the discharge conveyor roller is also the second speed.

[0012] Preferably, the paper feed roller and the discharge conveyor roller are located below the paper, and conveyor rollers are installed above them. The rollers below the paper are pressed together to prevent conveying deviation.

[0013] Preferably, the length of the first spacing m is less than 320 mm.

[0014] Preferably, the length of the second spacing n is greater than 600 mm.

[0015] Preferably, the paper feeding mechanism includes a cutter for continuously cutting paper stock.

[0016] This utility model has significant technical effects due to the adoption of the above technical solutions: the acceleration effect of the device increases the spacing between the papers, avoiding mutual interference between the papers when entering the subsequent production process, thus improving the quality and efficiency of bag production. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 This is a structural schematic diagram of some components of the paper feeding and conveying device;

[0020] Figure 4 This is a schematic diagram of the accelerating roller.

[0021] The parts referred to by the numbers in the above attached figures are as follows: 1. Frame; 2. Paper feeding mechanism; 21. Cutter; 3. Paper feeding roller; 4. Material conveying roller; 5. Accelerator roller; 51. Accelerator wheel; 511. Arc-shaped acceleration section; 52. Acceleration power source; 6. Conveyor roller. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] Example 1

[0024] A sheet paper feeding and conveying device, such as Figure 1-4 As shown, the machine includes a frame 1, on which a paper feeding mechanism 2, a paper feeding roller 3, a discharge conveying roller 4, and an acceleration roller 5 are mounted. The paper feeding mechanism 2 is used to output stacked or non-stacked paper sheets for forming bags. The paper feeding roller 3 feeds the paper from the paper feeding mechanism one sheet at a first speed to the paper conveying path located downstream. The discharge conveying roller 4 is located on the paper conveying path. The acceleration roller 5 is located downstream of the paper feeding roller 3. The acceleration roller 5 is located above the paper and is positioned between the paper feeding roller 3 and the discharge conveying roller 4 on the paper conveying path. The acceleration roller 5 is equipped with an acceleration wheel 51 that accelerates the paper through friction. The acceleration roller 5 is connected to an acceleration power source 52, which drives the acceleration roller 5 to rotate and feed the paper at a second speed to the paper conveying path located downstream.

[0025] The second speed is greater than the first speed;

[0026] The distance between the projections of the centerline of the paper feed roller 3 and the centerline of the acceleration roller 5 on the same horizontal plane is the first distance m, and the distance between the projections of the centerline of the paper feed roller 3 and the centerline of the discharge conveyor roller 4 on the same horizontal plane is the second distance n. The first distance m is less than the length of the paper sheet, and n is greater than the length of the paper sheet. The paper conveying device uses a distance less than the length of the paper sheet from the centerline of the paper feed roller 3 to the centerline of the acceleration roller 5, creating a speed difference between the front and rear ends of the paper. This ensures that if there are stacked sheets of paper, the next sheet maintains its original slower speed while the previous sheet is accelerating, thus achieving paper separation using the speed difference. The distance greater than the length of the paper sheet is used from the centerline of the discharge conveyor roller 4 to the centerline of the paper feed roller 3, preventing the bag from breaking. This layout design accommodates the production of bags with different paper lengths. In one embodiment conforming to general paper bag production, the length of the first distance m is less than 320 mm, and the length of the second distance n is greater than 600 mm.

[0027] like Figure 4 As shown, the acceleration wheel 51 is equipped with an arc-shaped acceleration part 511 for contacting the paper surface.

[0028] When the paper reaches the bottom of the acceleration roller 5 near the end of the feed roller 4, the front end of the paper is flush with the initial end of the arc-shaped acceleration section 511. The paper contacts the arc-shaped acceleration section 511 until the end of the arc-shaped acceleration section 511 leaves the paper surface. The arc length between the initial end and the end of the arc-shaped acceleration section 511 is not longer than the length of the paper sheet. When the length of the paper used to process the bag changes, the acceleration power source 52 is adjusted to match the rotation period of the acceleration wheel 51 with the paper length. Preferably, one revolution of the acceleration wheel 51 corresponds to one sheet of paper. The front end of the arc-shaped acceleration section 511 contacts the paper just as it enters the bottom of the acceleration roller 5. After accelerating the previous sheet of paper, the next sheet of paper is kept at the conveying speed of the feed roller 3, allowing the front and rear sheets to separate naturally.

[0029] The acceleration power source 52 is a servo motor.

[0030] The conveying speed of the discharge conveyor roller 4 is also the second speed.

[0031] The paper feed roller 3 and the discharge conveyor roller 4 are located below the paper, and conveyor rollers 6 are installed above them.

[0032] The paper feeding mechanism 2 includes a cutter 21 for cutting continuous paper material.

[0033] The specific working principle of the paper conveying device is as follows: First, the positions of the feed roller 3, discharge conveyor roller 4, and acceleration roller 5 are determined according to the paper length requirements of different bags. During the paper conveying process, the paper passes through the feed roller 3, acceleration roller 5, and discharge conveyor roller 4 in sequence, with the feed roller 3 providing a slower initial speed. The acceleration power source 52 ensures that the acceleration roller 5 drives the paper forward at a faster second speed, thus separating it from the next sheet of paper still at the first speed. When the paper reaches the discharge conveyor roller 4, it can maintain a relatively fast second speed, or it can be slowed down for the stability of the overall equipment operation. Therefore, the discharge conveyor roller 4 can be adjusted to a suitable conveying speed as needed. More conveyor rollers can be added to the discharge conveyor roller 4 to make the paper conveying more stable. Before the paper enters the position of the acceleration roller 5, the arc-shaped acceleration part 511 of the acceleration roller 5 remains in a state of not pressing on the paper. When the paper enters the position of the acceleration roller 5, the initial point of the arc-shaped acceleration section 511 coincides with the front end of the paper. At this time, since the downstream paper speed is faster than the upstream paper, the gap between the papers is widened, and they eventually enter the subsequent conveying process to make bags.

[0034] In the description of this utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A sheet paper feeding and conveying device, characterized in that, Includes a frame (1), on which are provided Paper feeding mechanism (2) is used to output stacked or non-stacked paper sheets for forming bag bodies; The paper feed roller (3) feeds the paper from the paper feed mechanism at a first speed to the paper transport path located on the downstream side by rotating. The discharge conveyor roller (4) is located on the paper conveying path, and the acceleration roller (5) is located downstream of the paper feed roller (3); The acceleration roller (5) is located above the paper. On the paper conveying path, the acceleration roller (5) is located between the paper feed roller (3) and the discharge conveying roller (4). The acceleration roller (5) is provided with an acceleration wheel (51) that accelerates the paper by friction. The acceleration roller (5) is connected to an acceleration power source (52) for driving the acceleration roller (5) to rotate the acceleration wheel (51) and send the paper out at a second speed to the paper conveying path located on the downstream side. The second speed is greater than the first speed; The distance between the projections of the center line of the paper feed roller (3) and the center line of the acceleration roller (5) on the same horizontal plane is the first distance m, and the distance between the projections of the center line of the paper feed roller (3) and the center line of the discharge conveyor roller (4) on the same horizontal plane is the second distance n. The first distance m is less than the length of the paper sheet, and n is greater than the length of the paper sheet.

2. The sheet paper feeding and conveying device according to claim 1, characterized in that: The acceleration wheel (51) is equipped with an arc-shaped acceleration section (511) for contacting the paper surface.

3. The sheet paper feeding and conveying device according to claim 2, characterized in that: When the paper reaches the bottom of the acceleration roller (5) at one end near the discharge conveyor roller (4), the front end of the paper is flush with the initial end of the arc-shaped acceleration section (511). The paper contacts the arc-shaped acceleration section (511) until the end of the arc-shaped acceleration section (511) leaves the paper surface. The arc length between the initial end and the end of the arc-shaped acceleration section (511) is not longer than the length of the paper sheet.

4. The sheet paper feeding and conveying device according to claim 2, characterized in that: The acceleration power source (52) is a servo motor.

5. The sheet paper feeding and conveying device according to claim 2, characterized in that: The conveying speed of the discharge conveyor roller (4) is also the second speed.

6. The sheet paper feeding and conveying device according to claim 1, characterized in that: The paper feed roller (3) and the discharge conveyor roller (4) are located below the paper, and conveyor rollers (6) are installed above them.

7. The sheet paper feeding and conveying device according to claim 1, characterized in that: The paper feeding mechanism (2) includes a cutter (21) for cutting continuous paper stock.

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