A web folding and flattening apparatus

Abstract

The utility model belongs to paper material processing technical field, especially is a kind of roll paper folding and flattening device, folding roller, including left folding roller and right folding roller;Fork, including left fork and right fork, for peeling off the paper material adsorbed on folding roller roll surface, make paper material folding and flatten;Support finger, including left support finger and right support finger, for supporting the paper material falling, and cooperate fork to complete the folding action of paper material;Still include controller, the light guide hole being opened in the fork along the axial arrangement of folding roller, the emitter being installed on the fork of one end of folding roller and the receiver being installed on the fork of the other end of folding roller, multiple light guide holes form the light guide channel that receiver receives the light ray that emitter sends, when receiver cannot receive the light ray signal that emitter sends, it shows that there is fork loosening, controller controls the operation of alarm, reminds operator to handle, avoid the abnormality of paper material folding and flattening operation due to fork loosening, ensure the continuity and stability of production.

Description

Technical Field

[0001] This utility model belongs to the field of paper processing technology, specifically relating to a roll paper folding and flattening device. Background Technology

[0002] A tissue box machine can process roll paper into finished tissues in a short time. Its working principle is mainly to first place the roll paper on a special roll paper rack. When the tissue box machine starts working, the guide roller starts to rotate under the drive of the motor. Guided by the guide roller, the paper is conveyed to the folding mechanism along a predetermined route. The folding mechanism mainly consists of a series of forks, left folding roller, right folding roller and transmission mechanism. The raw paper arrives at the folding device through the conveying device and passes from top to bottom through the gap between the left folding roller and the right folding roller. The suction nozzle on the left or right folding roller adsorbs the paper material through negative pressure, causing the lower end of the paper material to move a certain length along the circumference of the folding roller. When the paper material moves to the appropriate position, the fork on the corresponding folding roller swings outward from the roller groove, pushing the paper material away from the folding roller. Since the support finger supports the falling paper material, the fork bends the paper material and presses it against the support finger. Meanwhile, the suction nozzle on the other folding roller draws in the paper material through negative pressure, causing the paper material to swing to that side and transfer to the folding roller. The paper material folds at the intersection of the fork and the support finger. This process is repeated, and the paper material is folded into a paper block, completing the folding process of the paper drawer. Under the action of the fork, the folded paper is flattened for subsequent cutting and packaging.

[0003] However, in the above process, because the paper material is quite long during folding, the shift forks are spaced several times apart, and the shift forks are indirectly fixed to the transmission mechanism through connecting shafts or bearings. After long-term use, the contact parts between the shift forks and the connecting parts will experience wear, vibration, or installation problems due to friction. This will increase the clearance between the shift forks and the connecting parts. When the clearance exceeds a certain limit, the shift forks will become loose when swinging, affecting the stability and accuracy of the shift forks and the folding and flattening of the paper material. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide a roll paper folding and flattening device to solve the problems mentioned in the background art.

[0005] This utility model provides a roll paper folding and flattening device, including a folding roller, comprising a left folding roller and a right folding roller, for adsorbing and moving the paper material conveyed from the guide roller; a shift fork, comprising a left shift fork and a right shift fork, for peeling the paper material adsorbed on the folding roller surface, so that the paper material is folded and flattened; a support finger, comprising a left support finger and a right support finger, located between two adjacent shift forks, for supporting the falling paper material and cooperating with the shift forks to complete the folding action of the paper material; a transmission mechanism for linking the left folding roller, the right folding roller, the left shift fork, and the right shift fork to complete the folding and flattening operation of the paper material; and a controller, light guide holes penetrating through multiple shift forks arranged along the axial direction of the folding roller, a transmitter installed on a shift fork at one end of the folding roller, and a receiver installed on a shift fork at the other end of the folding roller. The multiple light guide holes form a light guide channel for the receiver to receive the light emitted by the transmitter. When the receiver does not receive the light signal emitted by the transmitter, the controller controls the operation of an alarm.

[0006] Preferably, the transmitter and receiver are located at the heads of two forks respectively. When the receiver can periodically receive the light signal emitted by the transmitter, the controller determines that the multiple forks arranged along the axial direction of the folding roller are not loose. When the receiver cannot receive the light signal emitted by the transmitter, the controller determines that one of the multiple forks arranged along the axial direction of the folding roller is loose.

[0007] Preferably, the transmitter and receiver are located at the tails of the two forks. When the receiver can receive the light signal emitted by the transmitter, the controller determines that the multiple forks arranged along the axial direction of the folding roller are not loose. When the receiver cannot receive the light signal emitted by the transmitter, the controller determines that one of the multiple forks arranged along the axial direction of the folding roller is loose.

[0008] Preferably, a heating device is installed at the head of each of the shift forks, the heating device including a heating element opened inside the shift fork and a temperature controller for controlling the temperature of the heating element.

[0009] Preferably, the inner wall of the light guide hole is polished, and its surface roughness Ra is less than 0.8 μm, so as to ensure the transmission efficiency of light in the light guide hole.

[0010] Preferably, the alarm is an audible and visual alarm, and the alarm is connected to the controller via a relay, which is used to control the alarm's start and stop.

[0011] The beneficial effects of this utility model are: by setting up a monitoring system consisting of a controller, a light guide hole, a transmitter, and a receiver, the status of multiple shift forks (left shift fork and right shift fork) arranged along the axial direction of the folding roller can be monitored in real time. Once a shift fork becomes loose, the receiver will not receive the light signal emitted by the transmitter, and the controller can promptly know and control the alarm to run, reminding the operator to handle the situation. This helps to detect equipment failures in a timely manner, avoid abnormal paper folding and flattening operations caused by loose shift forks, and ensure the continuity and stability of production. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0014] Figure 3 This is a first cross-sectional view of the present invention.

[0015] Figure 4 This is an enlarged structural diagram of point A in this utility model;

[0016] Figure 5 This is an enlarged structural diagram of point B in this utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0018] Figure 7 This is a second cross-sectional view of the present invention.

[0019] Figure 8 This is an enlarged structural diagram of point C in this utility model;

[0020] Figure 9 This is a third cross-sectional view of the present invention.

[0021] Figure 10 This is an enlarged structural diagram of point D in this utility model.

[0022] In the diagram: 1. Left folding roller; 2. Right folding roller; 3. Left shift fork; 4. Right shift fork; 5. Left support finger; 6. Right support finger; 7. Controller; 8. Light guide hole; 9. Transmitter; 10. Receiver; 11. Heating element; 12. Rotating shaft; 13. Bolt; 14. Gear; 15. Electric telescopic rod; 16. Rack plate; 17. Roller groove; 18. Paper guide roller. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0024] This utility model relates to an existing roll paper folding and flattening device, which mainly includes folding rollers, forks, support fingers, and a transmission mechanism. The folding rollers typically consist of a left folding roller 1 and a right folding roller 2, arranged parallel and close to each other. For example, the left folding roller 1 rotates clockwise, while the right folding roller 2 rotates counterclockwise. During rotation, the suction nozzles on the folding rollers adsorb the paper material, causing it to move in a circular motion, providing power and a trajectory for folding. Some folding rollers also have roller grooves 17 to avoid the forks. The forks include a left fork 3 located at the left folding roller 1 and a right fork 4 located at the right folding roller 2, mounted on a rotating shaft 12. They can swing outwards from inside the folding rollers, dislodging the paper material adsorbed on the roller surface, thus folding and flattening the paper. The support fingers include a left support finger 5 and a right support finger 6, located between the two forks, used to support the falling paper material, working in conjunction with the forks to complete the folding action. Some folding devices are also equipped with a support finger lifting mechanism and a lateral movement mechanism to adjust the position of the support fingers. The transmission mechanism includes a fork drive device (such as...). Figure 2As shown, the tails of multiple shift forks arranged along the axial direction of the folding roller are all connected by a rotating shaft 12 and mounted on the rotating shaft 12 by bolts 13. Gears 14 are connected to both ends of the rotating shaft 12. The bottom of the gears 14 meshes with a rack plate 16 driven by an electric telescopic rod 15. When the electric telescopic rod 15 drives the rack plate 16 to move back and forth, it drives the gears 14 to rotate back and forth, thereby driving the rotating shaft 12 and the shift forks to perform a reciprocating oscillating motion. The finger-supporting drive device {driven by a finger-supporting lifting mechanism and a finger-supporting lateral movement mechanism. The lifting mechanism typically includes a lifting motor assembly, a synchronous belt, and a chuck. The lifting motor assembly drives the synchronous belt, which drives the finger-supporting movement through the chuck. The lateral movement mechanism is generally driven by a motor or other drive components to move the finger-supporting movement in the left-right direction (not shown in the figure)}. The folding roller drive device (driven by a motor via a coupling... The shaft of the folding roller is connected to the shaft of the folding roller (such as the shaft and reducer, which drives the folding roller to rotate). In use, the raw paper arrives at the folding device via the conveying device and passes from top to bottom through the gap between the left folding roller 1 and the right folding roller 2. The suction nozzle on the left folding roller 1 or the right folding roller 2 uses negative pressure to absorb the paper material, causing the lower end of the paper material to move a certain length along the circumference of the folding roller. When the paper material moves to the appropriate position, the electric telescopic rod 15 drives the rack plate 16 to move closer to the folding roller, which drives the gear 14 to rotate, thereby driving the rotating shaft 12 and the shift fork to swing closer to the folding roller. The shift fork on the corresponding folding roller swings outward from the roller groove 17, pushing the paper material away from the folding roller. Then the electric telescopic rod 15 returns to its original position, driving the gear 14, rack plate 16 and shift fork to return to their original positions. Since the support finger supports the falling paper material, the shift fork bends the paper material and presses it against the support finger. Meanwhile, the suction nozzle on the other side of the folding roller attracts the paper material through negative pressure, causing the paper material to swing to that side and transfer to the folding roller. The paper material is folded at the intersection of the fork and the support finger. The above actions are repeated, and the paper material will be folded and flattened into a paper block, completing the paper folding process. The above is an introduction to an existing roll paper folding and flattening device.

[0025] As can be seen from the above, the existing roll paper folding and flattening device has the following defects when in use: because the paper material in the folding process has a long length, and the forks are spaced several times, and the forks are indirectly fixed to the transmission mechanism through connecting shafts or bearings, after long-term use, the contact parts between the forks and the connecting parts will experience wear, vibration, or installation problems due to friction, which will increase the clearance between the forks and the connecting parts. When the clearance exceeds a certain limit, the forks will loosen when swinging, affecting the stability and accuracy of the forks, and affecting the folding and flattening operation of the paper material. Based on the above problems, this utility model adopts the following improvement method to solve them.

[0026] like Figure 1-10As shown, a roll paper folding and flattening device, based on existing technology, has light guide holes 8 drilled through multiple forks arranged along the axial direction of the folding rollers (three rows of left forks at the left folding roller 1 and four rows of right forks at the right folding roller 2). These multiple light guide holes 8 form a light guide channel for the receiver 10 to receive light emitted by the transmitter 9. To ensure the transmission efficiency of light within the light guide holes 8, the inner wall of the light guide holes 8 is polished, with a surface roughness Ra less than 0.8 μm, effectively reducing light scattering and refraction within the light guide holes 8. A transmitter 9 is installed on a fork located at one end of the folding roller, and a receiver 10 that cooperates with the transmitter 9 is installed on a fork located at the opposite end of the folding roller. The light emitted by the transmitter 9 can be received by the receiver 10 through the light guide channel, and the output terminal of the receiver 10 is connected to the signal output terminal of the controller 7. When the receiver 10 does not receive the light signal emitted by the transmitter 9, the controller 7 controls the operation of the alarm and issues an audible and visual alarm. The transmitter 9 and the receiver 10 can be an infrared emitting tube and an infrared receiving tube, or a laser transmitter 9 and a laser receiver 10, respectively. Specifically, because the head of the shift fork is arc-shaped and matches the roller groove 17 on the folding roller, it is used to push the paper material adsorbed on the folding roller away from the folding roller. The tail of the shift fork is connected to the rotating shaft 12 and is usually nearly straight. During the shift fork drive device's movement, the support finger drive device will also drive the support finger to cooperate with the shift fork to complete the folding of the paper material according to a preset program. Therefore, there is an overlap between the shift fork and the support finger. Therefore, in the use of the above technical solution, the installation position of the transmitter 9 and receiver 10 on the shift fork needs to be further explained:

[0027] The following is the first embodiment of this utility model. When the transmitter 9 and receiver 10 are respectively located at the heads of the two forks, when the forks extend into the roller groove 17 guided into the folding roller, adjacent forks are blocked by the folding roller. At this time, the light guide holes 8 on all the forks are not connected to each other, and the receiver 10 cannot receive the light emitted by the transmitter 9. After the paper is peeled off from the folding roller, the forks swing out from the roller groove 17 again. At this time, the light guide holes 8 on all the forks are connected to each other. This is one cycle. At this time, the receiver 10 can receive the light emitted by the transmitter 9. When the receiver 10 can periodically receive the light signal emitted by the transmitter 9, the controller... 7. If the receiver 10 does not receive the light signal emitted by the transmitter 9, the controller 7 determines that one of the multiple forks arranged along the folding roller axis is loose. At this time, the receiver 10 transmits the signal to the controller 7, and the controller 7 controls the alarm to sound an alarm to remind the staff. At the same time, the alarm is connected to the controller 7 through a relay, which can effectively isolate the circuit between the controller 7 and the alarm, prevent damage to the controller 7 due to circuit failure, and facilitate independent control and debugging of the alarm, thereby improving the reliability and stability of the entire device.

[0028] The following is a second embodiment of this utility model. When the transmitter 9 and receiver 10 are located at the tails of the two shift forks, near the rotating shaft 12, the left shift fork column 3 and the right shift fork column 4 are not affected by the support finger and will not overlap with the support finger. Under normal circumstances, the light guide holes 8 in the left shift fork column 3 and the right shift fork column 4 are always in a connected state, and the receiver 10 can normally receive the light emitted by the transmitter 9. When the receiver 10 can receive the light signal emitted by the transmitter 9, the controller 7 determines that the multiple shift forks arranged along the folding roller axis are not loose. When the receiver 10 cannot receive the light signal emitted by the transmitter 9, the controller 7 determines that one of the multiple shift forks arranged along the folding roller axis is loose, and the controller 7 controls the alarm to sound an alarm to remind the staff. To facilitate quick location of loose forks by staff, transmitter 9 can be replaced with a range sensor, receiver 10 with a baffle, and controller 7 can be connected to a display module that shows information such as the location of loose forks. For example, when there are 10 forks in the three columns of the left fork, with a total length of 8 meters, the distance from the range sensor to the baffle is approximately 8 meters. This distance is set as the safe distance. The thickness of the fork is 0.5 meters, and the distance between two adjacent forks is 0.33 meters. When the second fork becomes loose, the light emitted by the range sensor may shine on the second fork. The distance detected by the range sensor is 0.5 + 0.33 = 0.83 meters, which is less than the safe distance. At this time, controller 7 controls the alarm to sound and displays the location of the fork on controller 7.

[0029] Furthermore, such as Figure 4 As shown, in order to improve the quality and effect of folding and flattening roll paper, a heating device is installed at the head of the fork, including a heating element 11 and a temperature controller. The heating element 11 is made of ceramic heating element or stainless steel heating tube, which can heat the fork. When the fork folds and flattens the paper, it can improve the flexibility and plasticity of the paper, making it easier to operate during the folding and flattening process and reducing problems such as paper breakage and wrinkling. The temperature controller is a PID temperature controller 7, whose control accuracy can reach ±1℃. It can accurately control the temperature of the heating element 11 according to different paper materials and production requirements, ensuring the controllability and stability of the heating process, further improving the accuracy and quality of paper processing, and at the same time avoiding the overheating of the fork from affecting the quality of the paper.

[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the protection scope of this utility model.

Claims

1. A roll paper folding and flattening device, comprising: Folding rollers, including a left folding roller (1) and a right folding roller (2), are used to adsorb and move the paper material conveyed from the guide roller (18); The forks, including the left fork (3) and the right fork (4), are used to peel the paper material adsorbed on the folding roller from the roller surface, so that the paper material is folded and flattened. The supporting fingers, including the left supporting finger (5) and the right supporting finger (6), are located between two adjacent forks and are used to support the falling paper material and cooperate with the forks to complete the folding action of the paper material; The transmission mechanism is used to link the left folding roller (1), the right folding roller (2), the left shift fork (3) and the right shift fork (4) together to complete the folding and flattening operation of the paper material; The invention is characterized by including a controller (7), a light guide hole (8) through which multiple forks arranged along the axial direction of the folding roller are opened, a transmitter (9) installed on one end fork of the folding roller, and a receiver (10) installed on the other end fork of the folding roller. The multiple light guide holes (8) form a light guide channel for the receiver (10) to receive the light emitted by the transmitter (9). When the receiver (10) does not receive the light signal emitted by the transmitter (9), the controller (7) controls the operation of the alarm.

2. The roll paper folding and flattening device according to claim 1, characterized in that: The transmitter (9) and receiver (10) are located at the heads of two forks respectively. When the receiver (10) can periodically receive the light signal emitted by the transmitter (9), the controller (7) determines that the multiple forks arranged along the axial direction of the folding roller are not loose. When the receiver (10) cannot receive the light signal emitted by the transmitter (9), the controller (7) determines that one of the multiple forks arranged along the axial direction of the folding roller is loose.

3. The roll paper folding and flattening device according to claim 1, characterized in that: The transmitter (9) and receiver (10) are located at the tail of the two forks respectively. When the receiver (10) can receive the light signal emitted by the transmitter (9), the controller (7) determines that the multiple forks arranged along the axial direction of the folding roller are not loose. When the receiver (10) cannot receive the light signal emitted by the transmitter (9), the controller (7) determines that one of the multiple forks arranged along the axial direction of the folding roller is loose.

4. A roll paper folding and flattening device according to any one of claims 1-3, characterized in that: Each of the shift forks is equipped with a heating device at its head position, the heating device including a heating element (11) inside the shift fork and a temperature controller for controlling the temperature of the heating element (11).

5. The roll paper folding and flattening device according to claim 1, characterized in that: The inner wall of the light guide hole (8) is polished, and its surface roughness Ra is less than 0.8 μm, so as to ensure the transmission efficiency of light in the light guide hole (8).

6. The roll paper folding and flattening device according to claim 1, characterized in that: The alarm is an audible and visual alarm, and the alarm is connected to the controller (7) via a relay, which is used to control the alarm to start and stop.

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