Body paper feeding position adjusting method for corrugated paper production

Abstract

The invention relates to the technical field of corrugated paper production, in particular to a body paper feeding position adjusting method for corrugated paper production, and the body paper feeding position adjusting method comprises a control system which comprises the following steps: a corrugated roller air suction groove positioning step; a body paper edge positioning step: performing conversion calculation on the current edge position data to obtain edge relative position data of the edges on the two sides relative to the corrugated roller in the axial direction of the corrugated roller; an overlapping judgment step: according to the air suction groove position data and the edge relative position data, judging whether at least one side edge of the edges of the two sides of the body paper coincides with the width projection of one air suction groove or not; if yes, executing the step of avoiding coincidence; in the step of avoiding overlapping, the base paper is translated by a set distance in the direction parallel to the axial direction of the corrugated roller till no edge coincides with the width projection of any air suction groove. The steps of detection, judgment and adjustment are automatically completed, the human participation degree is high, and the stability of the production quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of corrugated paper production technology, and in particular to a method for adjusting the position of the base paper in corrugated paper production. Background Technology

[0002] Corrugated cardboard is a multi-layered bonded paperboard, also known as corrugated paperboard. It consists of at least one layer of corrugated paper and one layer of face paper bonded together. It has good elasticity and extensibility and is mainly used for manufacturing cartons, carton fillings, and packaging of fragile goods.

[0003] Corrugated paper is a type of corrugated paper, and corrugated rolls are used in its production. The surface of the corrugated roll is evenly distributed with flutes, the direction of which is parallel to the axial direction of the roll. During corrugated paper production, two corrugated rolls mesh, and the base paper passes through the meshing section, pressing it into corrugated paper. To improve the quality of the corrugated paper, one of the corrugated rolls is equipped with an internal suction function. The negative pressure generated by this internal suction keeps the base paper tightly adhered to the roll, preventing it from detaching or vibrating. If the base paper detaches or vibrates, the resulting corrugation will be incomplete or uneven in height, affecting subsequent bonding with the face paper. To achieve this internal suction effect, the corrugated roll has multiple suction grooves, each circumferentially arranged on its surface. These grooves are evenly distributed along the axial direction of the roll. A corrugated roll with internal suction function is shown below. Figure 1 As shown.

[0004] However, in actual production, it was found that while the middle portion of the raw paper is firmly held in place by the suction groove and does not detach or shake, the edges of the raw paper occasionally drift. This drifting of the raw paper edges leads to substandard quality at the edges of the resulting corrugated paper, resulting in waste paper. Slightly adjusting the paper feeding position can avoid this problem, but currently there is no unified method to guide how to adjust the paper feeding position. Therefore, it is necessary to improve upon the problems existing in the current technology. Summary of the Invention

[0005] The purpose of this invention is to provide a method for adjusting the position of the base paper in corrugated paper production, which aims to solve the problem of the edge of the base paper drifting in the prior art.

[0006] To achieve the above objectives, the present invention provides a method for adjusting the position of the base paper in corrugated paper production, including a control system. The control system executes the following steps: S1, a corrugated roll suction groove positioning step, acquiring suction groove position data of each suction groove on the corrugated roll along the axial direction of the corrugated roll; wherein the suction grooves of the corrugated roll are arranged in a circumferential manner; S2, a base paper edge positioning step, acquiring the current edge position data of the two sides of the base paper at the current position, and converting and calculating the current edge position data to obtain the position of the two sides of the edges relative to the corrugated roll along the axial direction of the corrugated roll. S3, Overlap Judgment Step: Based on the suction groove position data and the edge relative position data, determine whether there is at least one edge on both sides of the paper that overlaps with the width projection of one of the suction grooves; if the judgment is yes, then execute the overlap avoidance step; S4, Overlap Avoidance Step: Move the paper along the direction parallel to the axial direction of the corrugated roll by a set distance. If after moving by a set distance there is still one edge that overlaps with the width projection of one of the suction grooves, then continue to move by a set distance until no edge overlaps with the width projection of any suction groove.

[0007] Furthermore, the method also includes an S5 coverage optimization step, which determines whether the total number of covered air suction slots can be increased by translating the base paper; if it is determined to be yes, the base paper is translated to increase the number of covered air suction slots; if it is determined to be no, the current number of covered air suction slots is maintained; in the overlap determination step, if it is determined to be no, the coverage optimization step is executed; if it is determined to be yes, the overlap avoidance step is executed and then the coverage optimization step is executed.

[0008] Furthermore, in the S5 coverage optimization step, the method for determining whether the total number of covered suction slots can be increased by translating the base paper is as follows: the two sides of the base paper are set as the first side edge and the second side edge, respectively; the suction slot currently covered by the base paper and closest to the first side edge is the first suction slot; the suction slot currently covered by the base paper and closest to the second side edge is the second suction slot; the distance D1 between the first side edge and the first suction slot is calculated; the distance D2 between the second side edge and the second suction slot is calculated; and the distance between adjacent suction slots of the corrugated roll is D3. If D1 + D2 > D3, it is determined that the total number of covered suction slots can be increased by translating the base paper; if D1 + D2 ≤ D3, it is determined that the total number of covered suction slots cannot be increased by translating the base paper.

[0009] Furthermore, when the number of air-suction grooves covered by the paper is increased by translating the paper, the relative size of D1 and D2 is determined. When translating the paper, it is translated in the direction of the edge corresponding to the larger value of D1 and D2. If D1 and D2 are equal, it is translated in the direction of the edge corresponding to D1.

[0010] Furthermore, the method also includes a distance optimization step S6, which translates the original paper so that D1 = D2 after translation.

[0011] Furthermore, the control system includes a database that stores the position data of the air suction grooves of the corrugated rollers.

[0012] Furthermore, the control system is connected to a grating, which is used to detect the edge position of the corrugated roll and also to detect the edge position of the base paper.

[0013] Furthermore, in the S4 step of avoiding overlap, the distance is set to 1cm-2cm.

[0014] This invention provides a method for adjusting the position of the base paper in corrugated paper production. It determines whether the edge of the base paper coincides with the width projection of the suction groove. If overlap exists, the position of the base paper is adjusted. This allows the base paper to be more effectively adsorbed by the suction groove, reducing the probability of the base paper edge lifting. The detection, judgment, and adjustment steps are automatically completed by a control system, minimizing human intervention, reducing operational difficulty and the risk of human error, and ensuring stable production quality. This method improves the quality of the corrugated paper edges and reduces waste paper generation. Attached Figure Description

[0015] Figure 1 A structural diagram of a corrugated roller with circumferential suction grooves;

[0016] Figure 2 This is a flowchart of the method of the present invention;

[0017] Figure 3 This is a schematic diagram illustrating the adjustment principles of steps S3 and S4;

[0018] Figure 4 This is a schematic diagram illustrating the adjustment principle of step S5;

[0019] Figure 5 This is a schematic diagram illustrating the adjustment principle of step S6.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Corrugated roll; 11. Suction groove; 2. Base paper; 21. First side edge; 22. Second side edge. Detailed Implementation

[0022] The embodiments of the present invention will be described in detail below.

[0023] In this embodiment, unless otherwise explicitly specified and limited, terms such as "set in," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through one or more intermediate media. Those skilled in the art can understand the specific meaning of these terms in this embodiment based on the specific circumstances. The directional terms appearing in this embodiment are for the purpose of better describing the characteristics of the features and the relationships between them. It should be understood that when the placement direction of this embodiment changes, the direction of the characteristics of the features and the relationships between them also changes accordingly. Therefore, directional terms do not constitute an absolute limitation on the characteristics of the features and the relationships between them in space, but only a relative limitation.

[0024] Research revealed that the reason for the paper's edge drifting is that the edge of the paper is located directly within the suction groove (the width of which is typically a few millimeters). The negative pressure effect of the suction groove cannot be fully utilized, and the airflow drawn in by the groove continuously impacts the edge of the paper, causing it to undulate. To solve the problem mentioned in the background section, it is necessary to avoid the edge of the paper being located directly within the suction groove.

[0025] Therefore, this embodiment provides a method for adjusting the paper loading position in corrugated paper production, including a control system, such as... Figure 2 As shown, the control system performs the following steps:

[0026] S1. Positioning step of the air suction groove 11 on the corrugated roller 1: Obtain the position data of each air suction groove 11 on the corrugated roller 1 along the axial direction of the corrugated roller 1; wherein, the air suction grooves 11 of the corrugated roller 1 are arranged in a circumferential manner. Preferably, the control system includes a database that stores the position data of the air suction grooves of the corrugated roller 1. The operator inputs the position data of the air suction grooves of the corrugated roller 1 that will be used into the control system in advance. When a certain type of corrugated roller 1 is used for production, the control system retrieves the position data of the air suction grooves corresponding to that corrugated roller 1.

[0027] S2. The paper edge positioning step involves acquiring the current edge position data of both sides of the paper 2 at the current position. This data is then converted and calculated to obtain the relative edge position data of both sides of the paper 2 with respect to the corrugated roll 1 along its axial direction. In actual use, there are errors between the installation positions of various hardware devices and their ideal positions, positional offsets between the paper tube of the paper 2 and the paper feeder, and positional deviations between the paper feeder and the corrugated roll 1. After considering these errors, the position data of the paper 2 in the Earth coordinate system is transferred to the axial direction of the corrugated roll 1. Preferably, the control system is connected to a grating. The grating is used to detect the edge position of the corrugated roll 1 (converted to its position in the Earth coordinate system), and the grating is also used to detect the edge position of the base paper 2 (converted to its position in the Earth coordinate system). Of course, there can be two gratings, one corresponding to the corrugated roll and the other to the base paper. Each grating has a position in the Earth coordinate system. After obtaining the edge position of the corrugated roll 1 and the edge position of the base paper 2 in their respective gratings, the coordinate transformation can be used to obtain the relative position data of the edges on both sides relative to the corrugated roll 1 in the axial direction of the corrugated roll 1, which serves as the basis for subsequent adjustments.

[0028] To better illustrate this embodiment, the following will be combined with... Figures 3 to 5 This embodiment will be described. In this example, the width of the base paper 2 is set to 46cm, and the distance between the midpoints of adjacent suction grooves 11 on the corrugated roll 1 is 10cm, that is, D3=10cm.

[0029] S3. Overlap Judgment Step: Based on the air suction groove position data and edge relative position data, determine whether at least one edge of the original paper 2 overlaps with the width projection of one of the air suction grooves 11; if so, execute the overlap avoidance step. Figure 3 In the state shown above, the first side edge 21 (left side) coincides with the width projection of one of the suction grooves 11, therefore, an overlap avoidance step needs to be performed. S4, overlap avoidance step: The base paper 2 is translated a predetermined distance in a direction parallel to the axial direction of the corrugated roll 1. If, after translating a predetermined distance, one side edge still coincides with the width projection of one of the suction grooves 11, then the translation continues for another predetermined distance until no edge coincides with the width projection of any suction groove 11. Preferably, in the overlap avoidance step S4, the predetermined distance is 1cm-2cm. Figure 3 As shown, moving the original paper 2 1cm to the right results in the following: Figure 3 In the state shown below, the first side edge 21 is offset from the air intake groove 11, and at the same time, the second side edge 22 (right side) does not coincide with the width projection of the air intake groove 11. At this time, the S4 overlap avoidance step is completed.

[0030] In this embodiment, the method further includes a S5 coverage optimization step, which determines whether the total number of covered air suction slots 11 can be increased by translating the base paper 2; if it is determined to be possible, the base paper 2 is translated to increase the number of covered air suction slots 11; if it is determined to be impossible, the current number of covered air suction slots 11 is maintained; in the overlap determination step, if it is determined to be no, the coverage optimization step is executed; if it is determined to be yes, the overlap avoidance step is executed and then the coverage optimization step is executed. Preferably, in the S5 coverage optimization step, the method for determining whether the total number of covered suction grooves 11 can be increased by translating the base paper 2 is as follows: The two sides of the base paper 2 are defined as the first side edge 21 and the second side edge 22, respectively. The suction groove 11 currently covered by the base paper 2 and closest to the first side edge 21 is designated as the first suction groove 111, and the suction groove 11 currently covered by the base paper 2 and closest to the second side edge 22 is designated as the second suction groove 112. The distance D1 between the first side edge 21 and the first suction groove 111 is calculated, and the distance D2 between the second side edge 22 and the second suction groove 112 is calculated. The distance between adjacent suction grooves 11 of the corrugated roll 1 is designated as D3. If D1 + D2 > D3, it is determined that the total number of covered suction grooves 11 can be increased by translating the base paper 2; if D1 + D2 ≤ D3, it is determined that the total number of covered suction grooves 11 cannot be increased by translating the base paper 2. Figure 4 As shown, for example, D1 is 9cm, D2 is 7cm, D1+D2=16cm, 16cm is greater than D3's 10cm. Figure 4 In the state shown above, the paper 2 only covers four suction grooves 11, and a significant portion of the paper 2's side edges are not absorbed by the suction grooves 11. Therefore, in this embodiment, the paper 2 is moved to the left until the first side edge 21 crosses one suction groove 11. Figure 4 As shown in the lower part of the image, the paper 2 is covered by a total of 5 suction grooves 11. The portion of the paper 2 that is not adsorbed by the suction grooves 11 on both sides is greatly reduced, and the adsorption effect of the corrugated roller 1 on the paper 2 is improved.

[0031] In this embodiment, when the number of air-suction grooves 11 covered by the paper 2 is increased by translating the paper 2, the relative sizes of D1 and D2 are determined. When translating the paper 2, it is translated in the direction of the edge corresponding to the larger of D1 and D2; if D1 and D2 are equal, it is translated in the direction of the edge corresponding to D1. Figure 4 As shown, since D1 is greater than D2, it means that the distance between the first side edge 21 and the first suction groove 111 on its left is less than the distance between the second side edge 22 and the second suction groove 112 on its right. If the paper 2 is moved to the left, it is easier to increase the number of suction grooves 11 covered, and the time spent moving the paper 2 is reduced.

[0032] In this embodiment, the method further includes a distance optimization step S6, which involves translating the original paper 2 so that D1 = D2 after the translation. Figure 5 As shown in the lower part of the image, after the original paper 2 is translated to D1=D2, the distance between the two sides of the original paper 2 and the air suction groove 11 is the same, and the two sides of the original paper 2 are not easy to float up.

[0033] After all the above steps, the original paper 2 is adjusted to the following position: Figure 5 The optimal state shown in the lower middle section represents the best state in which the base paper 2 is adsorbed by the corrugated roller 1.

[0034] In summary, this method of adjusting the paper position on the base paper can improve the quality at the edge of the corrugated paper and reduce the generation of waste paper.

[0035] Where there is no conflict, the above embodiments and features can be combined with each other.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the preferred technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the present invention.

Claims

1. A method for adjusting the paper loading position in corrugated paper production, comprising a control system, characterized in that, The control system execution includes the following steps: S1, Corrugated Roll Air Suction Groove Positioning Step: Obtain the air suction groove position data of each air suction groove on the corrugated roll in the axial direction of the corrugated roll; wherein, the air suction groove of the corrugated roll is set in a circumferential manner. S2, Paper edge positioning step: Obtain the current edge position data of the edges on both sides of the paper at the current position, and convert and calculate the current edge position data to obtain the relative edge position data of the two sides of the paper with respect to the corrugated roll in the axial direction of the corrugated roll. S3. Overlap Judgment Step: Based on the air suction groove position data and the relative edge position data, determine whether there is at least one edge on both sides of the original paper that overlaps with the width projection of one of the air suction grooves; if the determination is yes, then execute the overlap avoidance step. S4. Avoid overlapping steps: Move the paper along a direction parallel to the axial direction of the corrugated roll by a set distance. If, after moving the paper by a set distance, one edge still overlaps with the width projection of one of the suction grooves, continue to move the paper by a set distance until no edge overlaps with the width projection of any suction groove.

2. The method for adjusting the paper loading position of the base paper in corrugated paper production according to claim 1, characterized in that: The method also includes an S5 coverage optimization step, which determines whether the total number of covered air suction slots can be increased by translating the base paper; if it is determined to be possible, the base paper is translated to increase the number of covered air suction slots; if it is determined to be impossible, the current number of covered air suction slots is maintained. In the overlap determination step, if the determination is negative, the coverage optimization step is executed; if the determination is positive, the overlap avoidance step is executed first, followed by the coverage optimization step.

3. The method for adjusting the paper loading position of the base paper in corrugated paper production according to claim 2, characterized in that: In the S5 coverage optimization step, the method for determining whether the total number of covered suction slots can be increased by translating the base paper is as follows: the two sides of the base paper are defined as the first side edge and the second side edge, respectively. The suction slot currently covered by the base paper and closest to the first side edge is the first suction slot, and the suction slot currently covered by the base paper and closest to the second side edge is the second suction slot. The distance D1 between the first side edge and the first suction slot is calculated, the distance D2 between the second side edge and the second suction slot is calculated, and the distance between adjacent suction slots of the corrugated roll is D3. If D1 + D2 > D3, it is determined that the total number of covered suction slots can be increased by translating the base paper; if D1 + D2 ≤ D3, it is determined that the total number of covered suction slots cannot be increased by translating the base paper.

4. The method for adjusting the paper loading position of the base paper in corrugated paper production according to claim 3, characterized in that: When the number of air-suction grooves covered by the paper is increased by translating the paper, the relative sizes of D1 and D2 are determined. When translating the paper, the paper is translated in the direction of the edge corresponding to the larger value of D1 and D2. If D1 and D2 are equal, the paper is translated in the direction of the edge corresponding to D1.

5. The method for adjusting the paper loading position of the base paper in corrugated paper production according to claim 3, characterized in that: The method also includes the S6 distance optimization step, which translates the original paper so that D1=D2 after translation.

6. The method for adjusting the paper loading position of the base paper in corrugated paper production according to any one of claims 1 to 5, characterized in that: The control system includes a database that stores data on the position of the suction grooves of the corrugated rollers.

7. The method for adjusting the paper loading position of the base paper in corrugated paper production according to claim 6, characterized in that: The control system is connected to a grating, which is used to detect the edge position of the corrugated roll and also to detect the edge position of the base paper.

8. The method for adjusting the paper loading position of the base paper in corrugated paper production according to claim 1, characterized in that: In the S4 step of avoiding overlap, the distance is set to 1cm-2cm.

Images