Impression type paper folding device

Abstract

The application discloses a creasing paper folding device, which comprises a paper feeding mechanism and a paper discharging mechanism arranged oppositely; a paper conveying channel is arranged between the paper feeding mechanism and the paper discharging mechanism; a creasing pressing mechanism one and a creasing pressing mechanism two capable of generating creases by pressing the conveyed paper are arranged in a staggered manner on the paper conveying channel, and the creases generated by the creasing pressing mechanism one and the creasing pressing mechanism two pressing the conveyed paper are in opposite directions; when the creasing pressing mechanism one or the creasing pressing mechanism two presses the conveyed paper, the paper feeding mechanism temporarily stops conveying the current paper; and the paper with the generated creases is discharged from the paper discharging mechanism to form a fan-shaped fold. The application can effectively improve the folding quality and folding efficiency of the folded paper, and is particularly suitable for continuously folding super-long paper without a transition section.

Description

Technical Field

[0001] This invention relates to paper folding equipment—such as a paper stacking machine for binding and archiving engineering drawings—specifically, a paper folding device that folds paper by creasing. Background Technology

[0002] In the printing or graphic management industry, there is a paper-folding operation (also known as a paper stacking operation) that involves folding large-format papers (such as engineering drawings) to meet the technical requirements for later binding and archiving. When folding large-format papers, the first step is to fold them back and forth in a zigzag pattern—that is, to form a fan-shaped fold structure.

[0003] With the advancement of technology, the fan-shaped folding of large-format paper is currently mainly achieved using high-efficiency paper folding machines (also known as paper stacking machines, hereinafter referred to as paper folding machines). There are two main types of paper folding structures in paper folding machines, one of which is... Figure 1 The three-axis folding structure shown (using a large roller as the drive roller structure for forward / reverse reciprocating motion, and two small rollers on the sides of the large roller as pressure roller structures), another type is as follows: Figure 2 The belt-driven roller folding structure shown uses a belt as the transmission mechanism for forward / reverse motion, and two small rollers on the sides of the belt as pressure rollers. To achieve frictional contact between the transmission and pressure roller structures and to control misalignment and skewing caused by the rollers after multiple folds, the clearance between the transmission and pressure roller structures is relatively limited, only accommodating stacked papers of relatively small thickness (typically a maximum of about ten times the thickness of a single sheet). Therefore, this type of folding machine is less suitable for folding extremely long sheets of paper with significant thickness after folding (e.g., some drawings in railway, highway, and petroleum engineering industries can be tens of meters long). Figure 3 The segmented stacking method shown involves stacking segments to create stacked groups of the thickness allowed by the folding structure. A transition section is reserved between adjacent stacked groups for manual folding, allowing the adjacent stacked groups to overlap in a zigzag pattern. The width of the transition section is approximately twice the width of the stacked group to accommodate back-and-forth zigzag folds. Due to the inherent tendency of manual folding to cause creases to shift and its inherent randomness, the quality and efficiency of manual paper folding are poor, especially when influenced by the position and structure of adjacent stacked groups.

[0004] In addition, the existing paper folding machine has a paper feeding channel formed between the pressure rollers and between the pressure rollers and the paper feeding device on one side of the transmission structure. The gap of this feeding channel is much larger than the thickness of the paper, which cannot clamp and position the paper being fed. When the forward / reverse movement of the transmission structure pushes and / or pulls the paper to fold, on the one hand, the paper pushed by friction (in its state before and after being pressed) will form one or more uncertain S-shaped oscillation deformations in the feeding channel. This causes a certain deviation between the actual size of each page and the set size when the paper is stacked, resulting in a size error for each page of the stacked structure. The size of the last page is particularly prominent due to the accumulation of errors, which affects the folding quality. On the other hand, due to the rapid forward / reverse rotation of the motor, the inherent inertial effect of the entire folding unit is difficult to eliminate, which will also affect the size accuracy of each page of the stacked paper.

[0005] Therefore, existing paper folding machines cannot automatically form continuous fan-shaped folds for extra-long sheets of paper. Manual intervention is required to fold the transition creases and layering arrangements, resulting in poor folding quality and low efficiency. There are currently no effective technical solutions to these problems. Summary of the Invention

[0006] The technical objective of this invention is to provide a creasing-type paper folding device that can effectively improve folding quality and efficiency, addressing the unique characteristics of the aforementioned fan-shaped paper folding and the shortcomings of existing technologies.

[0007] The technical objective of this invention is achieved through the following technical solution: a creasing paper folding device, comprising a paper feeding mechanism and a paper output mechanism arranged opposite to each other;

[0008] A paper conveying channel is arranged between the paper feeding mechanism and the paper output mechanism;

[0009] The paper conveying channel is provided with two crease pressing mechanisms, namely, a first crease pressing mechanism and a second crease pressing mechanism, which are arranged in a staggered manner to create creases on the conveyed paper. The creases created by the first crease pressing mechanism and the second crease pressing mechanism on the conveyed paper are in opposite directions.

[0010] Under the command of the controller, the first crease pressing mechanism and the second crease pressing mechanism produce two adjacent creases in opposite directions when pressing against the same sheet of paper being fed. After the paper with creases is output from the paper output mechanism, it forms a fan-shaped fold. The controller outputs control commands to the first crease pressing mechanism and the second crease pressing mechanism according to the paper feed depth, folding area and folding direction.

[0011] When either the first or second crease pressing mechanism presses against the conveyed paper, the paper feeding mechanism suspends the conveying of the current paper.

[0012] The above-mentioned technical measures are designed to address the special characteristics of large-format paper (such as drawings) fan-shaped folding. Two sets of crease pressing mechanisms in opposite directions create folding creases on the paper conveyed between the paper feeding mechanism and the paper output mechanism according to a set stroke. This allows the creased paper to be continuously folded back and forth in a zigzag pattern after output. The entire folding process does not require manual intervention to create creases, thereby effectively improving the folding quality and efficiency of the folded paper. It is particularly suitable for continuous folding of extra-long paper without transition sections, and also suitable for high-quality folding of paper of regular length.

[0013] As one of the preferred solutions, the linear velocity of the paper output roller surface of the paper output mechanism is greater than the linear velocity of the paper feed roller surface of the paper feed mechanism.

[0014] Furthermore, the frictional force exerted by the paper output roller of the paper output mechanism on the conveyed paper is less than the frictional force exerted by the paper feed roller of the paper feed mechanism on the conveyed paper.

[0015] The above-mentioned technical measures use a paper feeding mechanism to clamp and position the currently conveyed paper, and a paper output mechanism to pull the currently conveyed paper. The paper output mechanism is allowed to idle on the current paper, and the paper pulled by the paper output mechanism is also allowed to slightly retract from the paper mechanism under the pushing action of the crease pressing mechanism. This allows the currently conveyed paper to be pulled and straightened in the conveying channel before the crease pressing mechanism is applied, so that either crease pressing mechanism one or crease pressing mechanism two can accurately press creases on the current paper. Furthermore, the paper retracts slightly from the paper mechanism in a straightened state when the crease pressing mechanism pushes against it, so that the crease can be formed and the paper folding quality can be improved.

[0016] As one of the preferred solutions, the crease pressing mechanism consists of a concave mold formed with a V-shaped concave structure on one side of the paper conveying channel, and a top knife that reciprocates in a straight line relative to the concave mold on the other side of the paper conveying channel.

[0017] The top knife, which moves in a straight line, is inserted into the paper conveying channel and into the die, pressing and pressing the paper conveyed in the paper conveying channel to create creases.

[0018] The linear motion exits the ejector blade of the die, exits the paper conveying channel, and empties the current paper conveying channel.

[0019] As one of the preferred embodiments, the second crease pressing mechanism consists of a second concave mold formed with a V-shaped concave structure on one side of the paper conveying channel, and a second ejector blade that reciprocates linearly relative to the second concave mold on the other side of the paper conveying channel.

[0020] The second top knife, which moves in a straight line, is inserted into the paper conveying channel and into the second concave mold, pressing and pressing the paper conveyed in the paper conveying channel to create creases.

[0021] The linear motion exits the ejector blade of the second die, exits the paper conveying channel, and empties the current paper conveying channel.

[0022] The crease pressing mechanism described above can achieve crease pressing through the interplay of the concave and convex parts of the die and the ejector blade without affecting the current paper feeding. The resulting creases are clear, strictly straight, and will not damage the paper.

[0023] As one of the preferred solutions, the paper folding device further includes an automatic control system, which has at least a paper head position detection sensor, a paper feeding servo motor, a crease pressing drive element one, a crease pressing drive element two, and a controller.

[0024] The paper head position detection sensor is used to detect the position of the paper head entering the paper feeding mechanism and to feed back the detected current paper head position signal to the controller.

[0025] The paper feed servo motor drives the paper feed roller of the paper feed mechanism to rotate according to the action command output by the controller and the set stroke.

[0026] The controller is used to control the start / stop action of the paper feed servo motor;

[0027] The controller controls the corresponding rotation stroke of the paper feeding mechanism through the paper feeding servo motor according to the obtained paper feeding depth and folding area instructions, and outputs action instructions to the crease pressing drive element one or the crease pressing drive element two according to the obtained paper feeding depth and folding area instructions.

[0028] Under the control command of the controller, the crease pressing drive element is used to drive the top blade of the crease pressing mechanism to move in a straight line.

[0029] Under the control command of the controller, the second crease pressing drive element is used to drive the linear motion of the top blade of the second crease pressing mechanism.

[0030] The above-mentioned technical measures can accurately press out creases according to the preset folding width and the paper's entry depth and conveying volume under the control command, which helps to improve the paper folding quality.

[0031] As one preferred embodiment, the paper feeding mechanism and the paper output mechanism are arranged laterally along the left and right sides;

[0032] The paper folding device also includes a paper stacking tray and a sorting claw;

[0033] The paper stacking tray is fixed at an angle to the lower paper output roller of the paper output mechanism. The side of the paper stacking tray adjacent to the paper output mechanism is lower than the side away from the paper output mechanism. The paper stacking tray is used to receive the paper with indentations output by the paper output mechanism.

[0034] The sorting claw is assembled at the upper paper output roller of the paper output mechanism with a flip-out hinge structure or a linearly displaceable translation structure.

[0035] According to the set indentation direction, the front end of the movable displacement sorting claw approaches the paper output by the paper output mechanism and folds the indented paper output by the paper output mechanism inward.

[0036] Furthermore, the paper folding device also includes an automatic control system, which has a sorting drive element;

[0037] The sorting drive element, under the control command of the controller, is used to drive the sorting claw to perform flipping or translating operations;

[0038] The controller outputs action commands to the sorting drive element according to the obtained paper feed depth, folding area and folding direction commands.

[0039] The above-mentioned technical measures, through the cooperation of the stacking tray and the sorting claw at the paper output mechanism, continuously guide and fold the paper with creases output by the paper output mechanism in a fan shape. The crease pressing and fan-shaped folding processes do not require manual intervention, and can realize automated operation with high paper folding quality and efficiency.

[0040] As one preferred embodiment, the paper feeding mechanism and the paper output mechanism are arranged vertically along a high-low axis;

[0041] The paper folding device also includes a stacking tray and a steering guide mechanism;

[0042] The second paper stacking tray is fixed below the paper output mechanism, and the second paper stacking tray is used to receive the paper with indentations output by the paper output mechanism;

[0043] The steering guide mechanism has a guide plate one and a guide plate two;

[0044] The guide plate is arranged on one side of the paper outlet of the paper output mechanism and above the stacking tray, and is assembled with a flip-out hinge structure or a linearly movable translation structure.

[0045] The second guide plate is arranged on the other side of the paper outlet of the paper output mechanism, above the second stacking tray, and is assembled with a flip-out hinge structure or a linearly movable translation structure.

[0046] According to the set indentation direction, the movable guide plate one and guide plate two alternately approach the paper outlet of the paper output mechanism to fold the indented paper output by the paper output mechanism inward.

[0047] Furthermore, the paper folding device also includes an automatic control system, which has a steering drive element;

[0048] Under the control command of the controller, the steering drive element is used to drive the guide plate one or guide plate two of the steering guide mechanism to perform flipping or translational movements.

[0049] The controller outputs action commands to the steering drive element according to the obtained paper feed depth, folding area and folding direction commands.

[0050] The above-mentioned technical measures, through the cooperation of the stacking tray and the steering guide mechanism at the paper output mechanism, continuously guide and fold the paper with creases output by the paper output mechanism in a fan shape. No manual intervention is required for the crease pressing and fan-shaped folding process, which can realize automated operation and achieve high paper folding quality and efficiency.

[0051] The beneficial technical effects of this invention are as follows: The above-mentioned technical measures are designed for the special characteristics of large-format paper fan-shaped folding. Two sets of crease pressing mechanisms in opposite directions generate creases on the paper conveyed between the paper feeding mechanism and the paper output mechanism according to a set stroke. This allows the creased paper to be continuously fan-shaped back and forth in a zigzag pattern after output. Especially with the cooperation of the stacking tray and the sorting claw / direction guide mechanism at the paper output mechanism, the entire process does not require manual intervention, realizing automated continuous fan-shaped folding. This can effectively improve the folding quality and folding efficiency of the folded paper. It is particularly suitable for continuous folding of extra-long paper without transition sections, and also suitable for high-quality folding of paper of regular length. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of an existing three-axis paper folding device.

[0053] Figure 2 This is a schematic diagram of an existing belt roller type paper folding device.

[0054] Figure 3 for Figure 1 or Figure 2 The diagram shows the folding process of a continuous sheet of paper using a paper folding device.

[0055] Figure 4 This is a schematic diagram of one structure of the present invention.

[0056] Figure 5 for Figure 4 A magnified view of a portion of the image.

[0057] Figure 6 for Figure 4 and Figure 5 The diagram shows the process of folding paper using the folding device shown.

[0058] Figure 7 for Figure 4 and Figure 5 The diagram shows the process of the folding device folding the paper.

[0059] Figure 8 for Figure 7 A magnified view of a portion of the image.

[0060] Figure 9 for Figure 4 and Figure 5 The diagram shows the process of the folding device folding paper.

[0061] Figure 10 for Figure 4 and Figure 5 The diagram shows the process of the folding device folding paper.

[0062] Figure 11 for Figure 10 A magnified view of a portion of the image.

[0063] Figure 12 for Figure 4 and Figure 5 The diagram shows the folding process of the folding device folding the paper.

[0064] Figure 13 for Figure 4 and Figure 5 The diagram shows the process of the folding device folding paper.

[0065] Figure 14 for Figure 4 and Figure 5 The diagram shows the process of the folding device folding the paper.

[0066] Figure 15 for Figure 4 and Figure 5 The diagram shows the process of the folding device folding paper.

[0067] Figure 16 This is another structural schematic diagram of the present invention.

[0068] Figure 17 for Figure 16 A partial enlarged view of the folding device shown in the perspective diagram.

[0069] Figure 18 for Figure 16and Figure 17 The diagram shows the process of folding paper using the folding device shown.

[0070] Figure 19 for Figure 16 and Figure 17 The diagram shows the process of the folding device folding the paper.

[0071] Figure 20 for Figure 16 and Figure 17 The diagram shows the process of the folding device folding paper.

[0072] Figure 21 for Figure 16 and Figure 17 The diagram shows the process of the folding device folding paper.

[0073] Figure 22 for Figure 16 and Figure 17 The diagram shows the folding process of the folding device folding the paper.

[0074] Figure 23 for Figure 16 and Figure 17 The diagram shows the process of the folding device folding paper.

[0075] Figure 24 for Figure 16 and Figure 17 The diagram shows the process of the folding device folding the paper.

[0076] Figure 25 for Figure 16 and Figure 17 The diagram shows the process of the folding device folding paper.

[0077] The symbols in the diagram mean: 1—Paper feeding mechanism; 11—Paper feeding roller one; 12—Paper feeding roller two; 2—Paper output mechanism; 21—Paper output roller one; 22—Paper output roller two; 3—Paper conveying channel; 4—Folding pressing mechanism one; 41—Die one; 42—Top knife one; 5—Folding pressing mechanism two; 51—Die two; 52—Top knife two; 6—Paper stacking tray one; 7—Sorting claw; 8—Paper stacking tray two; 9—Directional guiding mechanism; 91—Guide plate one; 92—Guide plate two; 10—Paper. Detailed Implementation

[0078] This invention relates to paper folding equipment—such as a paper stacking machine for archiving engineering drawings—specifically, a paper folding device that folds paper by creasing. The main technical solution of this invention will be described in detail below with reference to several embodiments. Embodiment 1, in conjunction with the accompanying drawings, is... Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 The technical solution of the present invention will be clearly and thoroughly explained; Embodiment 4 is illustrated in conjunction with the accompanying drawings. Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22 , Figure 23 , Figure 24 and Figure 25 The technical solution of the present invention will be clearly and thoroughly explained; although other embodiments are not shown in separate drawings, their main structures can still be referred to the drawings of Embodiments 1 and 4.

[0079] It should be noted that the accompanying drawings of this invention are schematic, and unnecessary details have been simplified to clarify the technical objectives of this invention, so as to avoid obscuring the technical solutions contributed by this invention to the prior art. Furthermore, the terms "approximately" or "basically" used below to refer to quantities or fit relationships mean that reasonable assembly and processing errors are allowed in the industry, and do not literally describe absolute quantities or fit relationships.

[0080] Example 1

[0081] See Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 As shown, the present invention is a creasing type paper folding device, which includes a paper feeding mechanism 1, a paper conveying channel 3, a paper output mechanism 2, and a paper stacking tray 6 arranged laterally opposite each other on the frame.

[0082] Specifically, the paper feeding mechanism 1 mainly consists of an upper paper feeding roller 11 and a lower paper feeding roller 12 arranged in a vertically opposite configuration, forming a paper feeding channel. A paper feeding platform is arranged at the front. The paper feeding roller 11 or the paper feeding roller 12 is connected to a paper feeding servo motor. Driven by the servo motor, the paper feeding roller 11 or the paper feeding roller 12 rotates, thereby frictionally conveying the incoming paper 10 backwards. To prevent the paper 10 from slipping, the paper feeding roller 11 or the paper feeding roller 12 should be made of a material with a high coefficient of surface friction. Therefore, the entire paper feeding mechanism 1 is essentially no different from the paper feeding mechanism of a conventional paper folding machine.

[0083] To facilitate the start / stop control of the paper feeding mechanism 1 and the precise control of the paper feeding depth, two paper head position detection sensors are arranged at the paper feeding mechanism 1. One sensor is located at the front of the paper feeding mechanism and is used to detect the current paper feeding as it approaches / leaves the paper feeding mechanism. The detection signal is fed back to the controller, which then controls the start / stop operation of the paper feeding servo motor. During rotation, the continuously approaching paper is fed backward. That is, when the paper head position of the current paper is detected, the controller outputs a start command to the paper feeding servo motor; when the paper tail position of the current paper is detected, the controller outputs a stop command to the paper feeding servo motor. Of course, since there is a certain distance between the paper head position detection sensor and the output of the paper feeding mechanism, the controller's stop command should allow for this travel distance. Another sensor, located at the rear of the paper feed mechanism, detects the starting position of the current paper feed as it passes through the mechanism. The detection signal is fed back to the controller, which then determines the initial paper feed depth after the paper feed servo motor's initial start. The controller then performs start / stop positioning control (i.e., pulse signal) on the current stroke of the paper feed servo motor according to the set paper folding width command. Based on this, in addition to driving the rotation of either the first or second paper feed roller of the paper feed mechanism, the paper feed servo motor also drives the paper feed mechanism under the controller's command to precisely displace the paper, ensuring that the paper feed depth of each stroke conforms to the set folding width.

[0084] The paper output mechanism 2 mainly consists of an upper paper output roller 21 and a lower paper output roller 22 arranged in a vertically opposite manner, forming a paper output channel between them. Either the upper paper output roller 21 or the lower paper output roller 22 is connected to a paper output motor. Driven by the paper output motor, the upper paper output roller 21 or the lower paper output roller 22 rotates, thereby frictionally conveying the incoming paper 10 backwards. To ensure the conveyed paper 10 is taut and straightened between the paper input mechanism 1 and the paper output mechanism 2, preventing loose bending between them, and allowing the crease pressing mechanism to have some leeway in the taut state when pressing creases, the surface linear velocity of the paper output roller of the paper output mechanism 2 is greater than the surface linear velocity of the paper input roller of the paper input mechanism 1. If the surface linear velocity of the paper output mechanism is greater than that of the paper feed mechanism and the friction is the same or greater than that of the paper feed mechanism, on the one hand, the actual travel of the paper is difficult to control accurately due to the traction of the paper output mechanism; on the other hand, the paper between the paper feed mechanism and the paper output mechanism is easily pulled and broken when the crease pressing mechanism is pressed against it. Therefore, in order to achieve traction and straightening without tearing the paper, the friction force of the paper output roller of the paper output mechanism 2 acting on the paper 10 being transported should be significantly less than the friction force of the paper feed roller of the paper feed mechanism 1 acting on the paper 10 being transported. It is allowed that the paper output roller of the paper output mechanism 2 can slip and spin on the paper 10 being transported. It can be seen that there is no technical requirement for paper travel positioning at the paper output mechanism 2.

[0085] The main way to change the frictional force acting on the conveyed paper 10 by the paper output mechanism 2 is:

[0086] The rollers on the first paper output roller 21 and the rollers on the second paper output roller 22 are arranged in a staggered structure in the axial direction to reduce the contact friction between the first paper output roller 21 and the second paper output roller 22.

[0087] Alternatively, each roller on the first paper output roller 21 and each roller on the second paper output roller 22 can be made of a soft material, such as a sponge roller.

[0088] The paper transport channel 3 is formed by an upper and lower guard plate arranged in an upper-lower configuration. The paper transport channel 3 is positioned between the paper feeding mechanism 1 and the paper output mechanism 2. The front end of the paper transport channel 3 faces the paper feeding channel of the paper feeding mechanism 1, and the rear end faces the paper output channel of the paper output mechanism 2. To press creases into the transported paper 10, two crease pressing mechanisms, 1 and 2, are arranged on the paper transport channel 3 in a staggered manner to create creases by pressing against the transported paper 10. The creases created by 1 and 2 on the transported paper 10 are in opposite directions; that is, when 1 presses upwards to create a crease, 2 presses downwards to create a crease. Thus, adjacent creases created by these two mechanisms on the same sheet of paper 10 are opposite, enabling the same sheet of paper 10 to form a fan-shaped fold.

[0089] More specifically, in this embodiment, the first crease pressing mechanism 4 is close to the paper output mechanism 2, which presses the conveyed paper 10 upward to create a crease; the second crease pressing mechanism 5 is close to the paper input mechanism 1, which presses the conveyed paper 10 downward to create a crease.

[0090] The crease pressing mechanism 4 consists of a concave die 41 with a V-shaped concave structure formed on the upper guard plate of the paper conveying channel 3, and a pusher blade 42 movably arranged on the lower guard plate of the paper conveying channel 3. The pusher blade 42 is mounted on the frame on the lower guard plate of the paper conveying channel 3 with a linear sliding structure. Driven by a corresponding drive element (such as a motor or cylinder), it can perform linear reciprocating motion relative to the concave die 41. That is, according to the controller's instruction, the corresponding drive element drives the pusher blade 41 to move linearly and insert it into the paper conveying channel 3, pushing the paper 10 conveyed in the paper conveying channel 3 upward and inserting it into the concave die 41. The concave die 41 presses the paper 10 conveyed in the paper conveying channel 3 to form a crease. After the crease is pressed, according to the controller's instruction, the corresponding drive element drives the pusher blade 41 to move linearly and exit the concave die 41, releasing the paper 10 conveyed in the paper conveying channel 3. It continues to exit the paper conveying channel 3, clearing the conveying channel of the current paper 10, without obstructing the paper conveying channel 3. Based on this, the front end of the ejector blade 42 should conform to the V-shaped contour of the die cavity 41 and form a blunt structure without sharp edges. In addition, a stroke detection sensor should be formed in the linear reciprocating structure of the ejector blade 42 to ensure that the inserted ejector blade 42 is inserted into the die cavity 41 and the withdrawn ejector blade 42 is withdrawn into the paper conveying channel 3.

[0091] The crease pressing mechanism 25 consists of a concave die 251 formed with a V-shaped concave structure on the lower guard plate of the paper conveying channel 3, and an ejector blade 252 movably arranged on the upper guard plate of the paper conveying channel 3. The ejector blade 252 is mounted on the frame on the upper guard plate of the paper conveying channel 3 with a linear sliding structure. Under the drive of the corresponding drive element (such as a motor or cylinder), it can perform linear reciprocating motion relative to the concave die 251. That is, according to the instruction of the controller, the corresponding drive element drives the ejector blade 251 to move linearly and insert it into the paper conveying channel 3, pushing the paper 10 conveyed in the paper conveying channel 3 downward and inserting it into the concave die 251. The concave die 251 presses the paper 10 conveyed at the moment of contact to form a crease. After the crease is pressed, according to the instruction of the controller, the corresponding drive element drives the ejector blade 251 to move linearly and exit the concave die 251, releasing the paper 10 conveyed in the paper conveying channel 3. It continues to exit the paper conveying channel 3, clearing the conveying channel of the current paper 10, without obstructing the paper conveying channel 3. Based on this, the front end of the ejector blade 2 52 should conform to the V-shaped contour of the die cavity 2 51 and form a blunt structure without sharp edges. In addition, a stroke detection sensor should be formed in the linear reciprocating structure of the ejector blade 2 52 to ensure that the inserted ejector blade 2 52 is inserted into the die cavity 2 51 and the withdrawn ejector blade 2 52 is withdrawn into the paper conveying channel 3.

[0092] Under the command of the controller, the crease pressing mechanisms 1 and 2, when pressing against the same sheet of paper 10, produce adjacent creases in opposite directions. Only after the crease-forming paper 10 is output from the paper output mechanism 2 can a fan-shaped fold be formed. That is to say, the controller outputs control commands to the crease pressing mechanisms 1 and 2, according to the obtained paper feed depth and the preset folding width and folding direction. When the crease pressing mechanism 1 or 2 presses against the paper 10, in order to ensure the accuracy of the crease, the paper feed mechanism 1 should pause the feeding of the current sheet of paper 10. In other words, after the paper feed servo motor reaches the set crease formation position (e.g., 210mm from the paper tip or 210mm from the previous crease) at the current paper feed depth, the controller pauses the paper feed servo motor and controls the corresponding crease pressing mechanism 1 / crease pressing mechanism 2 / crease pressing mechanism 5 to operate. At this time, the paper 10 being fed is taut in the paper feed channel 3 under the traction of the paper output mechanism 2, so that the crease pressing mechanism 1 / crease pressing mechanism 2 / crease pressing mechanism 5 pushes and presses out a crease. After the crease pressing mechanism 1 / crease pressing mechanism 2 / crease pressing mechanism 5 exits under the control of the controller, the controller controls the paper feed servo motor to start the next stroke. Since the action of the crease pressing mechanism 1 / crease pressing mechanism 2 / crease pressing mechanism 5 is to push and deflect the fed paper 10 into the die to form a crease, in order to reduce the stroke of the crease pressing mechanism 1 / crease pressing mechanism 2 / crease pressing mechanism 5 and improve work efficiency, the gap between the upper and lower guard plates of the paper feed channel 3 should not be too large, generally allowing the paper 10 to pass freely.

[0093] After the creased paper 10 is output from the paper output mechanism 2, it forms a fan-shaped fold. Therefore, the stacking tray 6 is tilted and fixed at the lower paper output roller of the paper output mechanism 2. The side of the stacking tray 6 near the paper output mechanism 2 is lower than the side away from the paper output mechanism 2. The stacking tray 6 is used to receive the creased paper 10 output from the paper output mechanism 2. The tilted bottom side of the stacking tray 6 should have a baffle to position the received paper 10.

[0094] To achieve automated folding, the paper 10 entering the stacking tray 6 needs to be folded and guided by the sorting claw 7. Therefore, a flip-up sorting claw 7 is installed above the stacking tray 6 and on the upper side of the paper output roller of the paper output mechanism 2. The sorting claw 7 has a curved arm structure. The fixed end of the sorting claw 7 is hinged to the frame at the paper output roller on the upper side of the paper output mechanism 2. The movable end of the sorting claw 7 moves closer to or away from the paper output 10 of the paper output mechanism 2 according to the control command. Whether it moves closer or away is determined by the set creasing direction of the paper output 10 of the paper output mechanism 2. When the front end of the movable sorting claw 7, i.e. the free end, moves closer to the paper output 10 of the paper output mechanism 2, it guides the creasing paper 10 output by the paper output mechanism 2 to fold inward. At this time, the crease (or paper head) is located at the inclined bottom side of the stacking tray 6. When the front end of the movable sorting claw 7, i.e. the free end, moves away from the paper output 10 of the paper output mechanism 2, the creasing paper 10 output by the paper output mechanism 2 is folded inward by the guiding property of the crease itself under the action of gravity. At this time, the crease (or paper head) is located at the inclined top side of the stacking tray 6.

[0095] Based on the aforementioned motion attributes of the sorting claw 7, it is driven by a separate sorting drive element, which is preferably a servo motor. The controller outputs motion commands to the sorting drive element according to the paper length and folding direction output by the paper output mechanism 2. Under the control commands of the controller, the sorting drive element drives the sorting claw 7 to perform a flipping motion of the paper 10 output by the paper output mechanism 2 or away from the paper output mechanism 2. That is, the controller outputs motion commands to the sorting drive element according to the paper feed depth obtained by the drive stroke of the paper feed servo motor and according to the set folding width and folding direction.

[0096] Based on the above description of the creasing paper folding device of the present invention, in order to achieve automated operation, the present invention should, in addition to the above structure, also include an automatic control system. The automatic control system shall at least have a paper head position detection sensor, a paper feeding servo motor, a creasing pressing drive element one, a creasing pressing drive element two, a sorting drive element, and a controller.

[0097] Specifically, as described above, there are two paper position detection sensors arranged at the paper feeding mechanism 1; one is arranged at the front of the paper feeding mechanism to detect the current paper feeding as it approaches / leaves the paper feeding mechanism, and the detection signal is fed back to the controller. The controller controls the start / stop action of the paper feeding servo motor accordingly, and feeds the continuously approaching paper backward during rotation; the other is arranged at the rear of the paper feeding mechanism to detect the starting position of the current paper feeding as it passes through the paper feeding mechanism, and the detection signal is fed back to the controller. The controller obtains the paper feeding depth of the paper feeding servo motor after the initial start, and the controller performs start / stop positioning control (i.e., pulse signal) on the current stroke of the paper feeding servo motor according to the set paper folding width command.

[0098] The paper feed servo motor drives the paper feed roller of the paper feed mechanism 1 to rotate according to the action command output by the controller and the preset stroke (pulse signal);

[0099] The controller uses a PLC programmable controller, which controls the start / stop action of the paper feeding servo motor according to the paper feeding position signal; on the other hand, it outputs action commands to the crease pressing drive element one or crease pressing drive element two based on the paper feeding depth obtained according to the preset folding width command; and on the other hand, it outputs action commands to the sorting drive element based on the paper feeding depth obtained according to the preset folding width command and folding direction command.

[0100] Specifically, when the paper feed sensor detects the arrival of paper, the controller starts the paper feed servo motor; then, based on the signal from the paper feed depth sensor, the initial start pulse signal of the paper feed servo motor is cleared to zero, and the first pulse stroke after paper feed and paper feed depth acquisition is output to the paper feed servo motor based on the difference between the current paper feed depth and the set folding width; after the first pulse stroke ends, the second pulse stroke is output to the paper feed servo motor based on the set folding width, and so on.

[0101] According to the set folding width and folding direction, the crease pressing drive element 1 is used to drive the top knife 42 of the crease pressing mechanism 4 to move linearly under the control command of the controller; specifically, after the first pulse stroke ends, the current paper feed depth is exactly in line with the folding width of the first crease, and the folding direction requires the crease pressing mechanism 4 to move, then the crease pressing mechanism 4 performs crease pressing on the paper 10.

[0102] According to the set folding width and folding direction, the second crease pressing drive element is used to drive the top knife 52 of the second crease pressing mechanism 5 to move linearly under the control command of the controller; specifically, after the first pulse stroke ends, the current paper feed depth is exactly in line with the folding width of the first crease, and the folding direction requires the second crease pressing mechanism 5 to move, then the second crease pressing mechanism 5 performs crease pressing on the paper 10.

[0103] Under the control command of the controller, the sorting drive element is used to drive the sorting claw 7 to flip and move closer to / away from the paper outlet according to the paper feed depth, preset folding width and folding direction. Specifically, for example, when the second pulse stroke has been completed at the paper feed mechanism, and the first fold has been output from the paper outlet mechanism according to the length of the conveying channel, and an inward fold is required, the controller commands the sorting claw to move closer to the paper output by the paper outlet mechanism.

[0104] As explained above, the creases on the paper are created by the paper feeding mechanism and the paper output mechanism pulling and straightening the current paper. That is, when the first crease is formed, the current paper should have already entered the paper output mechanism and been straightened by the paper output mechanism.

[0105] Example 2

[0106] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0107] The sorting claw is mounted at an angle above the first paper stacking tray with a linear displacement translation structure, located on the upper side of the paper output roller of the paper output mechanism.

[0108] Specifically, the main body of the sorting claw is a plate-like structure, with a guide fork or guard plate at the front end. The entire sorting claw has a T-shaped or Y-shaped structure. The main body of the sorting claw is obliquely mounted on the frame above the paper stacking tray using a linear sliding structure. Driven by a sorting drive element (such as a motor or cylinder), the front end can perform linear reciprocating motion relative to the paper outlet of the paper output mechanism. That is, according to the controller's instructions, the sorting drive element drives the sorting claw to move linearly closer to the paper output by the paper output mechanism, guiding and folding the paper output from the paper outlet of the paper output mechanism inward. After the inward fold is completed, according to the controller's instructions, the sorting drive element drives the sorting claw to move linearly away from the paper output by the paper output mechanism.

[0109] Example 3

[0110] The rest of the content of this embodiment is the same as that of embodiment 1 or 2, except that:

[0111] Remove the sorting claw and corresponding drive structure above the stacking tray.

[0112] The creased paper output by the paper output mechanism falls into the stacking tray, where it is manually guided and folded inward along the creases, replacing the sorting claw function.

[0113] Example 4

[0114] See Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22 , Figure 23 , Figure 24 and Figure 25 As shown, the present invention is a creasing type paper folding device, which includes a paper feeding mechanism 1, a paper conveying channel 3, a paper output mechanism 2, and a stacking tray 8 arranged vertically opposite each other on the frame.

[0115] Specifically, the paper feeding mechanism 1 mainly consists of a right-side paper feeding roller 11 and a left-side paper feeding roller 12 arranged in a left-right relative configuration, forming a paper feeding channel. A paper feeding guide channel is typically arranged on the upper side. The paper feeding roller 11 or the paper feeding roller 12 is connected to a paper feeding servo motor. Driven by the paper feeding servo motor, the paper feeding roller 11 or the paper feeding roller 12 rotates, thereby frictionally conveying the incoming paper 10 downwards. It can be seen that the entire paper feeding mechanism 1 is essentially no different from the paper feeding mechanism of a conventional paper folding machine.

[0116] To facilitate the start / stop control of the paper feeding mechanism 1 and the precise control of the paper feeding depth, two paper head position detection sensors are arranged at the paper feeding mechanism 1. One sensor is located at the front of the paper feeding mechanism and is used to detect the current paper feeding as it approaches / leaves the paper feeding mechanism. The detection signal is fed back to the controller, which then controls the start / stop operation of the paper feeding servo motor. During rotation, the continuously approaching paper is fed backward. That is, when the paper head position of the current paper is detected, the controller outputs a start command to the paper feeding servo motor; when the paper tail position of the current paper is detected, the controller outputs a stop command to the paper feeding servo motor. Of course, since there is a certain distance between the paper head position detection sensor and the output of the paper feeding mechanism, the controller's stop command should allow for this travel distance. Another sensor, located at the rear of the paper feed mechanism, detects the starting position of the current paper feed as it passes through the mechanism. The detection signal is fed back to the controller, which then determines the initial paper feed depth after the paper feed servo motor's initial start. The controller then performs start / stop positioning control (i.e., pulse signal) on the current stroke of the paper feed servo motor according to the set paper folding width command. Based on this, in addition to driving the rotation of either the first or second paper feed roller of the paper feed mechanism, the paper feed servo motor also drives the paper feed mechanism under the controller's command to precisely displace the paper, ensuring that the paper feed depth of each stroke conforms to the set folding width.

[0117] The paper output mechanism 2 mainly consists of a right-side paper output roller 21 and a left-side paper output roller 22 arranged in a left-right relative configuration, forming a paper output channel between them. Either the right-side paper output roller 21 or the left-side paper output roller 22 is connected to a paper output motor. Driven by the paper output motor, the right-side paper output roller 21 or the left-side paper output roller 22 rotates, thereby frictionally conveying the incoming paper 10 downwards. To ensure the conveyed paper 10 is taut and straightened between the paper input mechanism 1 and the paper output mechanism 2, preventing loose bending between them, and allowing the crease pressing mechanism to have some leeway in the taut state when pressing creases, the surface linear velocity of the paper output roller of the paper output mechanism 2 is greater than the surface linear velocity of the paper input roller of the paper input mechanism 1. If the surface linear velocity of the paper output mechanism is greater than that of the paper feed mechanism and the friction is the same or greater than that of the paper feed mechanism, on the one hand, the actual travel of the paper is difficult to control accurately due to the traction of the paper output mechanism; on the other hand, the paper between the paper feed mechanism and the paper output mechanism is easily pulled and broken when the crease pressing mechanism is pressed against it. Therefore, in order to achieve traction and straightening without tearing the paper, the friction force of the paper output roller of the paper output mechanism 2 acting on the paper 10 being transported should be significantly less than the friction force of the paper feed roller of the paper feed mechanism 1 acting on the paper 10 being transported. It is allowed that the paper output roller of the paper output mechanism 2 can slip and spin on the paper 10 being transported. It can be seen that there is no technical requirement for paper travel positioning at the paper output mechanism 2.

[0118] The main way to change the frictional force acting on the conveyed paper 10 by the paper output mechanism 2 is:

[0119] The rollers on the first paper output roller 21 and the rollers on the second paper output roller 22 are arranged in a staggered structure in the axial direction to reduce the contact friction between the first paper output roller 21 and the second paper output roller 22.

[0120] Alternatively, each roller on the first output roller 21 and each roller on the second output roller 22 can be molded from a soft material, such as a sponge roller.

[0121] The paper transport channel 3 is formed by a right-side guard plate and a left-side guard plate arranged in a left-right configuration. The paper transport channel 3 is positioned between the paper feeding mechanism 1 and the paper output mechanism 2. The upper end of the paper transport channel 3 faces the paper feeding channel of the paper feeding mechanism 1, and the lower end of the paper transport channel 3 faces the paper output channel of the paper output mechanism 2. In order to press the transported paper 10 to form a crease, a crease pressing mechanism 1 4 and a crease pressing mechanism 2 5 are arranged on the paper transport channel 3 in a staggered manner to press the transported paper 10 to form a crease. The creases formed by the crease pressing mechanism 1 4 and the crease pressing mechanism 2 5 against the transported paper 10 are in opposite directions. That is, when the crease pressing mechanism 1 4 presses the transported paper 10 to the left to form a crease, the crease pressing mechanism 2 5 presses the transported paper 10 to the right to form a crease. In this way, the adjacent creases produced by the two mechanisms on the same piece of paper 10 are opposite, which can make the same piece of paper 10 form a fan-shaped fold.

[0122] More specifically, in this embodiment, the first crease pressing mechanism 4 is close to the paper output mechanism 2, and it presses the conveyed paper 10 to the left to create a crease; the second crease pressing mechanism 5 is close to the paper input mechanism 1, and it presses the conveyed paper 10 to the right to create a crease.

[0123] The crease pressing mechanism 4 consists of a concave die 41 with a V-shaped concave structure formed on the left side guard plate of the paper transport channel 3, and a pusher blade 42 movably arranged on the right side guard plate of the paper transport channel 3. The pusher blade 42 is mounted on the frame on the right side guard plate of the paper transport channel 3 with a linear sliding structure. Under the drive of the corresponding drive element (such as a motor or cylinder), it can perform linear reciprocating motion relative to the concave die 41. That is, according to the instruction of the controller, the corresponding drive element drives the pusher blade 41 to move linearly and insert it into the paper transport channel 3, pushing the paper 10 transported in the paper transport channel 3 to the left and inserting it into the concave die 41. The concave die 41 presses the currently transported paper 10 to form a crease. After the crease is pressed, according to the instruction of the controller, the corresponding drive element drives the pusher blade 41 to move linearly and exit the concave die 41, releasing the paper 10 transported in the paper transport channel 3. It continues to exit the paper transport channel 3, clearing the transport channel of the current paper 10, without obstructing the paper transport channel 3. Based on this, the front end of the ejector blade 42 should conform to the V-shaped contour of the die cavity 41 and form a blunt structure without sharp edges. In addition, a stroke detection sensor should be formed in the linear reciprocating structure of the ejector blade 42 to ensure that the inserted ejector blade 42 is inserted into the die cavity 41 and the withdrawn ejector blade 42 is withdrawn into the paper conveying channel 3.

[0124] The crease pressing mechanism 25 consists of a concave die 251 formed with a V-shaped concave structure on the right side guard plate of the paper transport channel 3, and a pusher blade 252 movably arranged on the left side guard plate of the paper transport channel 3. The pusher blade 252 is mounted on the frame on the left side guard plate of the paper transport channel 3 with a linear sliding structure. Under the drive of the corresponding drive element (such as a motor or cylinder), it can perform linear reciprocating motion relative to the concave die 251. That is, according to the instruction of the controller, the corresponding drive element drives the pusher blade 251 to move linearly and insert it into the paper transport channel 3, pushing the paper 10 transported in the paper transport channel 3 to the right and inserting it into the concave die 251. The concave die 251 presses the currently transported paper 10 to form a crease. After the crease is pressed, according to the instruction of the controller, the corresponding drive element drives the pusher blade 251 to move linearly and exit the concave die 251, releasing the paper 10 transported in the paper transport channel 3, continuously exiting the paper transport channel 3, clearing the transport channel of the current paper 10, and not obstructing the paper transport channel 3. Based on this, the front end of the ejector blade 2 52 should conform to the V-shaped contour of the die cavity 2 51 and form a blunt structure without sharp edges. In addition, a stroke detection sensor should be formed in the linear reciprocating structure of the ejector blade 2 52 to ensure that the inserted ejector blade 2 52 is inserted into the die cavity 2 51 and the withdrawn ejector blade 2 52 is withdrawn into the paper conveying channel 3.

[0125] Under the command of the controller, the crease pressing mechanisms 1 and 2, when pressing against the same sheet of paper 10, produce adjacent creases in opposite directions. Only after the crease-forming paper 10 is output from the paper output mechanism 2 can a fan-shaped fold be formed. That is to say, the controller outputs control commands to the crease pressing mechanisms 1 and 2, according to the obtained paper feed depth and the preset folding width and folding direction. When the crease pressing mechanism 1 or 2 presses against the paper 10, in order to ensure the accuracy of the crease, the paper feed mechanism 1 should pause the feeding of the current sheet of paper 10. In other words, after the paper feed servo motor reaches the set crease formation position (e.g., 210mm from the paper tip or 210mm from the previous crease) at the current paper feed depth, the controller pauses the paper feed servo motor and controls the corresponding crease pressing mechanism 1 / crease pressing mechanism 2 / crease pressing mechanism 5 to operate. At this time, the paper 10 being fed is taut in the paper feed channel 3 under the traction of the paper output mechanism 2, so that the crease pressing mechanism 1 / crease pressing mechanism 2 / crease pressing mechanism 5 pushes and presses out a crease. After the crease pressing mechanism 1 / crease pressing mechanism 2 / crease pressing mechanism 5 exits under the control of the controller, the controller controls the paper feed servo motor to start the next stroke. Since the action of the crease pressing mechanism 1 / crease pressing mechanism 2 / crease pressing mechanism 5 is to push and deflect the fed paper 10 into the die to form a crease, in order to reduce the stroke of the crease pressing mechanism 1 / crease pressing mechanism 2 / crease pressing mechanism 5 and improve work efficiency, the gap between the left and right guard plates of the paper feed channel 3 should not be too large, generally allowing the paper 10 to pass freely.

[0126] After the paper 10 with creases is output from the paper output mechanism 2, it forms a fan-shaped fold. Therefore, the paper stacking tray 2 8 is basically horizontally fixed at the paper output port below the paper output mechanism 2. The paper stacking tray 2 8 is used to receive the paper 10 with creases output from the paper output mechanism 2. The paper stacking tray 2 8 should have a surrounding plate to position the paper 10 it receives.

[0127] To achieve automated folding, the paper 10 entering the second paper tray 8 needs to be guided by the turning guide mechanism 9 for folding. Therefore, a linearly movable translational turning guide mechanism is installed above the second paper tray 8 and on both sides of the paper outlet of the paper output mechanism 2. The turning guide mechanism 9 has a guide plate 91 and a guide plate 92. The guide plate 91 is arranged on the right side of the paper outlet of the paper output mechanism 2 and above the second paper tray 8, and is assembled with a linearly movable translational structure. The guide plate 92 is arranged on the left side of the paper outlet of the paper output mechanism 2 and above the second paper tray 8, and is assembled with a linearly movable translational structure. More specifically, the main body of guide plate 1 91 / guide plate 2 92 is a plate-shaped structure, which is obliquely mounted on the corresponding position of the frame with a linear sliding structure. Under the drive of the corresponding steering drive element (such as a motor or cylinder), the front end can make linear reciprocating motion relative to the paper outlet of the paper output mechanism, and extend obliquely beyond the paper outlet of the paper output mechanism. That is, according to the instruction of the controller, the corresponding steering drive element drives guide plate 1 91 / guide plate 2 92 to move linearly close to the paper outlet of the paper output mechanism and extend beyond it, so as to guide the paper output from the paper outlet of the paper output mechanism to fold inward on the left / right side; after the inward fold is completed, the corresponding steering drive element drives guide plate 1 91 / guide plate 2 92 to move linearly away from the paper outlet of the paper output mechanism according to the instruction of the controller. Specifically, whether guide plate 1 91 or guide plate 2 92 is closer to the paper outlet depends on the set creasing direction of the paper 10 output by the paper output mechanism 2. According to the set creasing direction, the movable guide plate 1 91 and guide plate 2 92 alternately approach and extend beyond the paper outlet of the paper output mechanism 2 to guide the creasing paper 10 output by the paper output mechanism 2 to fold inward.

[0128] Based on the above description of the creasing paper folding device of the present invention, in order to achieve automated operation, the present invention should, in addition to the above structure, also include an automatic control system. The automatic control system shall at least have a paper head position detection sensor, a paper feed servo motor, a creasing pressing drive element one, a creasing pressing drive element two, a steering drive element one, a steering drive element two, and a controller.

[0129] Specifically, as described above, there are two paper position detection sensors arranged at the paper feeding mechanism 1; one is arranged at the front of the paper feeding mechanism to detect the current paper feeding as it approaches / leaves the paper feeding mechanism, and the detection signal is fed back to the controller. The controller controls the start / stop action of the paper feeding servo motor accordingly, and feeds the continuously approaching paper backward during rotation; the other is arranged at the rear of the paper feeding mechanism to detect the starting position of the current paper feeding as it passes through the paper feeding mechanism, and the detection signal is fed back to the controller. The controller obtains the paper feeding depth of the paper feeding servo motor after the initial start, and the controller performs start / stop positioning control (i.e., pulse signal) on the current stroke of the paper feeding servo motor according to the set paper folding width command.

[0130] The paper feed servo motor drives the paper feed roller of the paper feed mechanism 1 to rotate according to the action command output by the controller and the preset stroke (pulse signal);

[0131] The controller uses a PLC programmable controller, which controls the start / stop action of the paper feeding servo motor according to the paper feeding position signal; on the other hand, it outputs action commands to the crease pressing drive element one or crease pressing drive element two based on the paper feeding depth obtained according to the preset folding width command; and on the other hand, it outputs action commands to the sorting drive element based on the paper feeding depth obtained according to the preset folding width command and folding direction command.

[0132] Specifically, when the paper feed sensor detects the arrival of paper, the controller starts the paper feed servo motor; then, based on the signal from the paper feed depth sensor, the initial start pulse signal of the paper feed servo motor is cleared to zero, and the first pulse stroke after paper feed and paper feed depth acquisition is output to the paper feed servo motor based on the difference between the current paper feed depth and the set folding width; after the first pulse stroke ends, the second pulse stroke is output to the paper feed servo motor based on the set folding width, and so on.

[0133] According to the set folding width and folding direction, the crease pressing drive element 1 is used to drive the top knife 42 of the crease pressing mechanism 4 to move linearly under the control command of the controller; specifically, after the first pulse stroke ends, the current paper feed depth is exactly in line with the folding width of the first crease, and the folding direction requires the crease pressing mechanism 4 to move, then the crease pressing mechanism 4 performs crease pressing on the paper 10.

[0134] According to the set folding width and folding direction, the second crease pressing drive element is used to drive the top knife 52 of the second crease pressing mechanism 5 to move linearly under the control command of the controller; specifically, after the first pulse stroke ends, the current paper feed depth is exactly in line with the folding width of the first crease, and the folding direction requires the second crease pressing mechanism 5 to move, then the second crease pressing mechanism 5 performs crease pressing on the paper 10.

[0135] Based on the set folding width and folding direction, the controller outputs action commands to either the first or second steering drive element (for example, when the paper head is to the right, during the first stroke, the second steering drive element drives the second guide plate to approach and pass the paper outlet, at which point the first guide plate leaves the paper outlet, leaving a channel for the paper to bend to the right; when the first crease appears and the second stroke begins, the first steering drive element drives the first guide plate to approach and pass the paper outlet, at which point the second guide plate leaves the paper outlet, leaving a channel for the paper to bend to the left; and so on). Specifically, under the control command of the controller, the first steering drive element is used to drive the first guide plate 91 to perform a linear translation movement towards / away from the paper 10 output from the paper outlet; under the control command of the controller, the second steering drive element is used to drive the second guide plate 92 to perform a linear translation movement towards / away from the paper 10 output from the paper outlet.

[0136] As explained above, the creases on the paper are created by the paper feeding mechanism and the paper output mechanism pulling and straightening the current paper. That is, when the first crease is formed, the current paper should have already entered the paper output mechanism and been straightened by the paper output mechanism.

[0137] Example 5

[0138] The rest of the content of this embodiment is the same as that of embodiment 4, except that:

[0139] Guide plate one and guide plate two are mounted on top of paper stacking tray two in a flip-up structure, located at the paper outlets on the left and right sides of the paper output mechanism.

[0140] Specifically, guide plate one and guide plate two are both curved arm structures. The fixed end of guide plate one is hinged to the frame at the paper output roller on the right side of the paper output mechanism. The movable end of guide plate one moves closer to, extends beyond, or moves away from the paper output port of the paper output mechanism according to the control command. Whether it moves closer or away is determined according to the set creasing direction of the paper output by the paper output mechanism. When the front end of the movable guide plate one - that is, the free end - moves closer to or extends beyond the paper output port of the paper output mechanism, it guides the creasing paper output by the paper output mechanism to either fold the paper head to the left or fold it inward to the right. The fixed end of guide plate two is hinged to the frame at the paper output roller on the left side of the paper output mechanism. The movable end of guide plate two moves closer to, extends beyond or away from the paper output port of the paper output mechanism according to the control command. Whether it moves closer or away is determined according to the set creasing direction of the paper output by the paper output mechanism. When the front end of the movable guide plate two - that is, the free end - moves closer to or extends beyond the paper output port of the paper output mechanism, it guides the creasing paper output by the paper output mechanism to the right or fold inward to the left.

[0141] Example 6

[0142] The rest of the content of this embodiment is the same as that of embodiment 4 or 5, except that:

[0143] The steering guide mechanism and corresponding drive structure above the second stacking tray are removed.

[0144] The creased paper output by the paper output mechanism falls into the second paper stacking tray, where it is manually guided and folded inward along the creases, replacing the function of the steering and guiding mechanism.

[0145] The above embodiments are only used to illustrate the present invention and are not intended to limit it.

[0146] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications can still be made to the above embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the present invention.

Claims

1. A creasing paper folding device, comprising a paper feeding mechanism (1) and a paper output mechanism (2) arranged opposite to each other. Its features are: A paper conveying channel (3) is arranged between the paper feeding mechanism (1) and the paper output mechanism (2). The paper conveying channel (3) is provided with a staggered arrangement of a crease pressing mechanism 1 (4) and a crease pressing mechanism 2 (5) that can press against the conveyed paper (10) to create creases, and the creases created by the crease pressing mechanism 1 (4) and the crease pressing mechanism 2 (5) against the conveyed paper (10) are in opposite directions. Under the command of the controller, the first crease pressing mechanism (4) and the second crease pressing mechanism (5) press against the same sheet of paper (10) to produce two adjacent creases in opposite directions. After the crease-forming paper (10) is output from the paper output mechanism (2), it forms a fan-shaped fold. The controller outputs control commands to the first crease pressing mechanism (4) and the second crease pressing mechanism (5) according to the instructions of paper feed depth, folding area and folding direction. When the first crease pressing mechanism (4) or the second crease pressing mechanism (5) presses against the conveyed paper (10), the paper feeding mechanism (1) suspends the conveying of the current paper (10). The linear velocity of the paper output roller of the paper output mechanism (2) is greater than the linear velocity of the paper feed roller of the paper feed mechanism (1); Furthermore, the frictional force exerted by the paper output roller of the paper output mechanism (2) on the conveyed paper (10) is less than the frictional force exerted by the paper feed roller of the paper feed mechanism (1) on the conveyed paper (10).

2. The indentation-type paper folding device according to claim 1, characterized in that: The crease pressing mechanism (4) consists of a concave mold (41) formed with a V-shaped concave structure on one side of the paper conveying channel (3) and a top knife (42) that reciprocates linearly relative to the concave mold (41) on the other side of the paper conveying channel (3). The top knife (42) is inserted into the paper conveying channel (3) in a linear motion and then into the die (41) to press and create creases on the paper (10) conveyed in the paper conveying channel (3). The linear motion exits the ejector blade (42) of the die (41), exits the paper conveying channel (3), and empties the conveying channel of the current paper (10).

3. The indentation-type paper folding device according to claim 1, characterized in that: The second crease pressing mechanism (5) consists of a second concave mold (51) formed with a V-shaped concave structure on one side of the paper conveying channel (3), and a second ejector blade (52) that reciprocates linearly relative to the second concave mold (51) on the other side of the paper conveying channel (3). The top knife (52) is inserted into the paper conveying channel (3) in a linear motion and then into the concave mold (51) to press and create creases on the paper (10) conveyed in the paper conveying channel (3). The linear motion exits the ejector blade (52) of the die (51), exits the paper conveying channel (3), and empties the conveying channel of the current paper (10).

4. The indentation-type paper folding device according to any one of claims 1 to 3, characterized in that: The paper folding device also includes an automatic control system, which at least includes a paper head position detection sensor, a paper feeding servo motor, a crease pressing drive element one, a crease pressing drive element two, and a controller. The paper head position detection sensor is used to detect the paper head position of the paper (10) entering the paper feeding mechanism (1) and to feed back the detected paper head position signal to the controller. The paper feed servo motor drives the paper feed roller of the paper feed mechanism (1) to rotate according to the action command output by the controller and the set stroke. The controller is used to control the start / stop action of the paper feed servo motor; The controller controls the corresponding rotation stroke of the paper feeding mechanism (1) through the paper feeding servo motor according to the obtained paper feeding depth and folding area instructions, and outputs action instructions to the crease pressing drive element one or the crease pressing drive element two according to the obtained paper feeding depth and folding area instructions. Under the control command of the controller, the crease pressing drive element is used to drive the top knife (42) of the crease pressing mechanism (4) to move linearly; Under the control command of the controller, the second crease pressing drive element is used to drive the top knife (52) of the second crease pressing mechanism (5) to move linearly.

5. The indentation-type paper folding device according to claim 1, characterized in that: The paper feeding mechanism (1) and the paper output mechanism (2) are arranged laterally along the left and right sides; The paper folding device also includes a paper stacking tray (6) and a sorting claw (7). The first stacking tray (6) is inclined and fixed at the lower paper output roller of the paper output mechanism (2). The side of the first stacking tray (6) near the paper output mechanism (2) is lower than the side away from the paper output mechanism (2). The first stacking tray (6) is used to receive the paper (10) with indentation output by the paper output mechanism (2). The sorting claw (7) is assembled at the upper paper output roller of the paper output mechanism (2) with a reversible hinge structure or a linearly displaceable translation structure. According to the set indentation direction, the front end of the movable displacement sorting claw (7) approaches the paper (10) output by the paper output mechanism (2) and guides the indented paper (10) output by the paper output mechanism (2) inward.

6. The indentation-type paper folding device according to claim 5, characterized in that: The paper folding device also includes an automatic control system, which has a sorting drive element; The sorting drive element, under the control command of the controller, is used to drive the sorting claw (7) to perform flipping or translational movements; The controller outputs action commands to the sorting drive element according to the obtained paper feed depth, folding area and folding direction commands.

7. The indentation-type paper folding device according to claim 1, characterized in that: The paper feeding mechanism (1) and the paper output mechanism (2) are arranged vertically along the high and low positions; The paper folding device also includes a stacking tray (8) and a steering guide mechanism (9). The second stacking tray (8) is fixed below the paper output mechanism (2), and the second stacking tray (8) is used to receive the paper (10) with indentations output by the paper output mechanism (2). The steering guide mechanism (9) has a guide plate one (91) and a guide plate two (92); The first guide plate (91) is arranged on the paper outlet side of the paper output mechanism (2) and above the second stacking tray (8), and is assembled with a flip-out hinge structure or a linear displacement translation structure. The second guide plate (92) is arranged on the other side of the paper outlet of the paper output mechanism (2) and above the second stacking tray (8), and is assembled with a flip-out hinge structure or a linear displacement translation structure. According to the set indentation direction, the movable displacement guide plate one (91) and guide plate two (92) alternately approach the paper (10) output by the paper output mechanism (2) and guide the indented paper (10) output by the paper output mechanism (2) inward.

8. The indentation-type paper folding device according to claim 7, characterized in that: The paper folding device also includes an automatic control system, which has a steering drive element; Under the control command of the controller, the steering drive element is used to drive the guide plate one (91) or guide plate two (92) of the steering guide mechanism (9) to perform flipping or translational movements; The controller outputs action commands to the steering drive element according to the obtained paper feed depth, folding area and folding direction commands.

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