Moisturizing paper fixed cutting device and using method

Abstract

The invention discloses a moisture retention paper fixed cutting device which comprises a conveying channel which is of a vertically-arranged strip-shaped channel structure and at least comprises an upper conveying section and a lower conveying section, and a color mark sensor is arranged on the upper conveying section; the traction mechanism is arranged between the upper conveying section and the lower conveying section, and the traction mechanism is used for carrying out downward traction conveying on the moisture retention paper to enable the moisture retention paper to enter the lower conveying section; the shearing mechanism is arranged at a bottom port of the lower conveying section, and the shearing mechanism is used for shearing the moisture retention paper; the number of the paper guide plates is two, the two paper guide plates are arranged up and down, a gap exists between the two paper guide plates, the upper paper guide plate is fixedly arranged, an L-shaped baffle is arranged on one side of the lower paper guide plate, and the L-shaped baffle is connected with the output end of the paper receiving air cylinder. The fixed cutting device is suitable for fixed cutting of the moisture retention paper, and unqualified products can be conveniently removed in the fixed cutting process.

Description

Technical Field

[0001] This invention relates to the field of cutting technology, specifically to a moisture-retaining paper cutting device and its usage method. Background Technology

[0002] With the digital transformation of cigarette manufacturing enterprises, digital control of all aspects of production is needed. The emergence of new packaging models is accelerating the transformation and upgrading of digital technology in cigarette making equipment. Among them, high-end products include moisture-retaining film, or moisture-retaining paper for short. The investment and use of moisture-retaining paper is currently a major trend in high-end product packaging. There are currently two main types of moisture-retaining paper in use: one is customized in advance by auxiliary material manufacturers according to product specifications, with dedicated film for specific purposes, which is more expensive; the other is used without molds, rolled up, and then cut with a cutter at the cigarette packaging factory. This type has lower costs and larger production scale.

[0003] When using rolls of insulating paper, the rolls need to be cut and packaged, such as... Figure 1 As shown, with color mark 1 as a reference point, the cutter needs to cut the moisturizing paper at a fixed position to ensure the opening position of the moisturizing paper pull tab 2 for packaging the moisturizing pack, so that each pack of cigarettes can be opened in a fixed position. The cut moisturizing paper will package the cigarettes into a moisturizing pack 3.

[0004] Existing fixed-cutting devices can cut paper rolls such as aluminum foil into rectangular pieces of uniform length for packaging. However, aluminum foil is a solid-color paper and only needs to be cut to a specific length without needing to be cut at a fixed position. In contrast, humidifying paper needs to be cut at a fixed position to ensure that the position of the humidifying paper pull sheet is not affected. Therefore, existing fixed-cutting devices cannot meet the requirements for fixed-cutting humidifying paper. In view of this, the present invention provides a humidifying paper fixed-cutting device and a method of use. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for cutting humidified paper, which is suitable for cutting humidified paper and can facilitate the removal of defective products during the cutting process.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A moisture-retaining paper cutting device, comprising:

[0008] The conveying channel is a vertically arranged strip-shaped channel structure, which includes at least an upper conveying section and a lower conveying section, and a color mark sensor is installed on the upper conveying section;

[0009] A traction mechanism is installed between the upper conveying section and the lower conveying section. The traction mechanism is used to pull and convey the moistening paper downwards so that it enters the lower conveying section.

[0010] A shearing mechanism is provided at the bottom port of the lower conveyor section, and the shearing mechanism is used to cut the moistening paper;

[0011] There are two guide plates, one above the other, with a gap between them. The upper guide plate is fixed, and an L-shaped baffle is provided on one side of the lower guide plate. The L-shaped baffle is connected to the output end of the paper receiving cylinder.

[0012] The controller receives signals from the color mark sensor and controls the traction mechanism, the shearing mechanism, and the paper receiving cylinder.

[0013] Furthermore, it also includes a back plate, on which a paper guide roller is rotatably mounted. The conveying channel, traction mechanism, shearing mechanism, guide plate and industrial control computer are all mounted on the back plate. A support plate is mounted on the back plate, and the support plate is located on both sides of the L-shaped baffle.

[0014] Furthermore, the traction mechanism includes a first traction roller and a second traction roller, both of which are rotatably mounted on the back plate and are in contact with each other. A pulley is provided on the first traction roller or the second traction roller, and the pulley is located on the rear side of the back plate.

[0015] Furthermore, the shearing mechanism includes a shearing roller and a support roller, both of which are rotatably mounted on the back plate. A blade is mounted on the shearing roller. When the shearing roller rotates, the blade contacts the support roller. A pulley is mounted on the shearing roller and is located on the rear side of the back plate.

[0016] Furthermore, the two pulleys are connected by a belt, and one of the pulleys is connected to the output of the servo motor.

[0017] Furthermore, it also includes a toothed conveyor belt located beside the guide plate. A smoke-pushing cylinder is installed on the toothed conveyor belt, and a push plate is installed at the push end of the smoke-pushing cylinder. The push plate is located on one side of the gap between the two guide plates. A fiber optic sensor for detecting the arrival of the cigarette box is also installed on one side of the toothed conveyor belt. The fiber optic sensor and the smoke-pushing cylinder are respectively connected to the industrial control computer.

[0018] Furthermore, the controller includes an encoder, a PLC module, an industrial computer, and a touch screen that are electrically connected in sequence. The PLC module communicates with the industrial computer via an EtherCAT network cable. The color mark sensor is electrically connected to the PLC module, and the output terminals of the PLC module are respectively connected to a servo controller, a smoke-pushing solenoid valve, and a paper-receiving solenoid valve. The servo controller, the smoke-pushing solenoid valve, and the paper-receiving solenoid valve are respectively electrically connected to a servo motor, a smoke-pushing cylinder, and a paper-receiving cylinder.

[0019] On the other hand, based on the above-mentioned resealable paper cutting device, the present invention also provides a method of using the resealable paper cutting device, including the following steps:

[0020] S1. Connect the power supply to start the constant cutting device;

[0021] S2. After the device is started, the PLC module reads the host speed through the encoder and reads the set phase P1 of the moisturizing paper according to the color mark sensor. When the moisturizing paper passes the color mark sensor, the PLC module records the actual phase P2 of the detected moisturizing paper color mark.

[0022] S3. Read the minimum error △P1 and maximum error △P2 set by the device through the PLC module, and calculate the difference between the actual phase P2 and the set phase P1 △P=P1-P2.

[0023] S4. The industrial control computer makes a judgment based on the comparison of the read △P, △P1 and △P2 data, and controls the fixed cutting process according to the judgment result.

[0024] Furthermore, in step S4, the cutting process is controlled based on the determination result, which specifically includes:

[0025] a. If |P1-P2|≤△P1, that is, the difference between the actual phase P2 and the set phase P1 is less than the set minimum error △P1, then it is determined that no transmission adjustment is needed. The PLC module transmits the synchronous speed signal N to the servo controller, and the servo controller controls the servo motor to rotate synchronously with the host.

[0026] b. If △P1 < |P1-P2| < △P2, that is, the difference between the actual phase P2 and the set phase P1 is greater than the set minimum error △P1 and less than the set maximum error △P2, the PLC module needs to... The size of the moisture-retaining paper is used to calculate the conveying speed N1;

[0027] c. If |P1-P2|≥△P2, that is, the difference between the actual phase P2 and the set phase P1 is too large, the PLC module controls the paper receiving solenoid valve to open and remove the corresponding damping paper. If three defective damping papers are removed in a row, the device stops and sends a signal to control the host to stop.

[0028] Furthermore, the PLC module needs to be based on The size of the moisture-retaining paper is calculated based on the conveying speed N1, which specifically includes:

[0029] The formula for calculating the forward distance of the dampening paper and the rotation angle of the traction roller for each pulse signal is as follows: , , The corresponding angle difference is This gives the number of pulses that need to be adjusted for the corresponding damping paper. In the formula, To ensure the forward distance of the dampening paper, The rotation angle of the traction roller. Where n is the diameter of the traction roller, and n is the number of codes corresponding to one revolution of the servo motor.

[0030] Read adjustment step size The step size is the speed increase ratio corresponding to every 1000 pulses, based on the step size. Calculate the corresponding adjustment speed ,Will The signal is sent to the servo controller when the adjusted rotation angle equals... Afterwards, it returns to the normal speed N and transmits N to the servo controller, which then moves at a constant speed of N.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] This invention incorporates a color mark sensor on the conveying channel. This sensor collects real-time changes in the phase of the color mark and, using a servo controller and servo motor, combined with an industrial computer and PLC, enables precise cutting of the moisturizing paper at specific locations, preventing it from cutting onto the pull sheet. During the cutting process, feedback on the cutting quality of the moisturizing paper is provided, and substandard paper is discarded. Therefore, this moisturizing paper cutting device effectively selects and controls the length of the paper, providing timely and effective feedback on the cutting quality to the operator and aiding in decision-making. Compared to traditional moisturizing paper cutting devices, this invention effectively achieves pre-control, prevention, and optimization, significantly reducing the occurrence of problems. Attached Figure Description

[0033] Figure 1 This is a diagram of a moisture-retaining paper and a cigarette box with the moisture-retaining paper attached.

[0034] Figure 2 This is a schematic diagram of the structure of the moisture-retaining paper cutting device described in this invention.

[0035] Figure 3 This is a schematic diagram of the rear side of the moisture-retaining paper cutting device described in this invention.

[0036] Figure 4 for Figure 2 The main view.

[0037] Figure 5 This is a schematic diagram of the toothed conveyor belt after separation.

[0038] Figure 6 This is a block diagram showing the controller structure and connections.

[0039] Figure 7 This is a logic control diagram of the method of using the moisture-retaining paper cutting device described in this invention.

[0040] In the diagram, 1-back plate, 2-conveying channel, 2a-upper conveying section, 2b-lower conveying section, 3-color mark sensor, 4-guide roller, 5-traction mechanism, 51-first traction roller, 52-second traction roller, 6-shearing mechanism, 61-shearing roller, 62-support roller, 63-blade, 7-controller, 71-encoder, 72-PLC module, 73-industrial computer, 74-touch screen, 75-servo controller, 76-push smoke solenoid valve, 77-receive paper solenoid valve, 8-guide plate, 9-toothed conveyor belt, 10-push smoke cylinder, 11-push plate, 12-fiber optic sensor, 13-support plate, 14-L-shaped baffle, 15-receive paper cylinder, 16-pulley, 17-servo motor, 18-belt. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0043] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] refer to Figure 2-4 As shown, the present invention provides a moisture-retaining paper cutting device, comprising:

[0045] The conveying channel 2 is a vertically arranged strip-shaped channel structure. In some embodiments, the conveying channel 2 is composed of two transparent plates, and the distance between the two transparent plates forms the conveying channel 2. The conveying channel 2, for the passage of dampening paper, includes at least an upper conveying section 2a and a lower conveying section 2b. A color mark sensor 3 is installed on the upper conveying section 2a. This color mark sensor 3 is located on the side of the conveying channel 2 and is used to detect... Figure 1 The color mark on the side of the Zhongbao desiccant;

[0046] The traction mechanism 5 is disposed between the upper conveying section 2a and the lower conveying section 2b. The traction mechanism 5 is used to traction and convey the moistening paper downwards so that it enters the lower conveying section 2b.

[0047] Specifically, in some embodiments, the traction mechanism 5 includes a first traction roller 51 and a second traction roller 52. Both the first traction roller 51 and the second traction roller 52 are rotatably mounted on the back plate 1 and are in contact with each other. Preferably, both the first traction roller 51 and the second traction roller 52 are rubber rollers. The sizing paper is conveyed downward between the first traction roller 51 and the second traction roller 52 by the rotation of one of the traction rollers. A pulley 16 is provided on the first traction roller 51 or the second traction roller 52, and the pulley 16 is located on the rear side of the back plate 1.

[0048] A cutting mechanism 6 is located at the bottom port of the lower conveying section 2b, and the cutting mechanism 6 is used to cut the moistening paper;

[0049] Specifically, in some embodiments, the shearing mechanism 6 includes a shearing roller 61 and a support roller 62. Both the shearing roller 61 and the support roller 62 are rotatably mounted on the back plate 1, and a blade 63 is provided on the shearing roller 61. When the shearing roller 61 rotates, the blade 63 contacts the support roller 62, so that when the dampening paper passes between the shearing roller 61 and the support roller 62, the rotation of the blade 63 cuts the dampening paper shorter. A pulley 16 is provided on the shearing roller 61, and the pulley 16 is located on the rear side of the back plate 1.

[0050] The traction mechanism 5 and the shearing mechanism 6 can be driven independently or synchronously. When driven synchronously, the two pulleys 16 are connected by a belt 18, and one of the pulleys 16 is connected to the output of the servo motor 17.

[0051] Two guide plates 8 are arranged vertically, with a gap between them. The upper guide plate 8 is fixed and located beside the conveying channel 2. An L-shaped baffle 14 is provided on one side of the lower guide plate 8. The L-shaped baffle 14 is connected to the output end of the paper receiving cylinder 15. Preferably, the paper receiving cylinder 15 is initially in the extended state, and its installation position is as follows. Figure 5 As shown;

[0052] In actual use, the sizing paper is conveyed downward in the conveying channel 2 and cut by the shearing mechanism 6. When the cut sizing paper meets the set phase requirements, it is judged to be qualified. At this time, the sizing paper falls on the L-shaped baffle 14. It is worth noting that the length of the sizing paper falling on the L-shaped baffle 14 needs to extend to the upper guide plate 8. When the cut sizing paper does not meet the set phase requirements, the L-shaped baffle 14 retracts, causing the sizing paper to fall without support.

[0053] The device also includes a toothed conveyor belt 9, which is located beside the guide plate 8. Preferably, the toothed conveyor belt 9 has a belt conveying device and baffles are spaced on its conveyor belt. A conveying position for accommodating cigarette boxes is formed between two baffles. A cigarette-pushing cylinder 10 is provided on the toothed conveyor belt 9. A push plate 11 is provided at the push-out end of the cigarette-pushing cylinder 10. The push plate 11 is located on one side of the gap between the two guide plates 8, thereby pushing the cigarette box toward the gap. A fiber optic sensor 12 for detecting cigarette boxes is also provided on one side of the toothed conveyor belt 9. The fiber optic sensor 12 and the cigarette-pushing cylinder 10 are electrically connected to the industrial control computer 7.

[0054] When the qualified moistening paper falls onto the L-shaped baffle 14, the smoke-pushing cylinder 10 is activated. The pusher plate 11 pushes the cigarette box toward the moistening paper on the L-shaped baffle 14 so that the moistening paper can adhere to the cigarette box. The fiber optic sensor 12 can detect whether there is a cigarette box at the next delivery position, thus avoiding the situation of empty pushing when the smoke-pushing cylinder 10 is activated next time.

[0055] In addition, the device also includes a back plate 1, on which a paper guide roller 4 is rotatably arranged. The conveying channel 2, traction mechanism 5, shearing mechanism 6, guide plate 8 and industrial control computer 7 are all arranged on the back plate 1. A support plate 13 is arranged on the back plate 1. The support plate 13 is located on both sides of the L-shaped baffle 14. The part of the support plate 13 located on the left side can extend into the lower surface of the toothed conveyor belt 9 to support the conveyor belt and allow the cigarette box to pass through the support plate 13 after the cigarette is pushed.

[0056] The controller 7 is used to receive signals from the color mark sensor 3 and control the traction mechanism 5, the shearing mechanism 6 and the paper receiving cylinder 15.

[0057] Specifically, refer to Figure 6As shown, the controller 7 includes an encoder 71, a PLC module 72, an industrial computer 73, and a touch screen 74 connected in sequence. The encoder 71 can read the speed of the host, the rotation angle and speed of the servo motor 17, etc. The PLC module 72 communicates with the industrial computer 73 via an EtherCAT network cable. The color mark sensor 3 is electrically connected to the PLC module 72, and the output terminals of the PLC module 72 are respectively connected to a servo controller 75, a smoke push solenoid valve 76, and a paper receiving solenoid valve 77. The servo controller 75, the smoke push solenoid valve 76, and the paper receiving solenoid valve 77 are electrically connected to the servo motor 17, the smoke push cylinder 10, and the paper receiving cylinder 15, respectively.

[0058] Based on the above-mentioned moisture-retaining paper cutting device, refer to Figure 7 As shown, the present invention also provides a method of using the moisture-retaining paper cutting device, comprising the following steps:

[0059] S1. Connect the power supply to start the time-cut device. More specifically, after the system is powered on, determine whether it is started. If it is determined to be started, proceed to the second step. If it is determined not to be started, press the reset button to return the system to its original position. Then press the start button to return to the beginning and determine whether it is started.

[0060] S2. After the device is started, the PLC module 72 reads the host speed through the encoder 71 and reads the set phase P1 of the dampening paper according to the color mark sensor 3. When the dampening paper passes the color mark sensor, the PLC module 72 records the actual phase P2 of the detected dampening paper color mark.

[0061] S3. Read the minimum error △P1 and maximum error △P2 set by the device through the PLC module 72, and calculate the difference △P between the actual phase P2 and the set phase P1, △P=P1-P2.

[0062] S4. The industrial control computer 73 makes a judgment based on the read △P, △P1, and △P2 data, and controls the cutting process according to the judgment result. Specifically, the judgment result in this step includes the following three situations:

[0063] a. If |P1-P2|≤△P1, that is, the difference between the actual phase P2 and the set phase P1 is less than the set minimum error △P1, then it is determined that no transmission adjustment is needed. The PLC module 72 transmits the synchronous speed signal N to the servo controller 75, and the servo controller 75 controls the servo motor 17 to rotate synchronously with the host.

[0064] b. If △P1 < |P1-P2| < △P2, that is, the difference between the actual phase P2 and the set phase P1 is greater than the set minimum error △P1 and less than the set maximum error △P2, the PLC module 72 needs to... The size of the moisture-retaining paper is used to calculate the conveying speed N1;

[0065] The specific calculation process includes:

[0066] One rotation of the main shaft of the main equipment corresponds to the production of one pack of cigarettes, corresponding to a phase of 0°-360°. The formula for calculating the forward distance of the dampening paper and the rotation angle of the traction roller for each pulse signal is as follows: , , The corresponding angle difference is This gives the number of pulses that need to be adjusted for the corresponding damping paper. In the formula, To ensure the forward distance of the dampening paper, The rotation angle of the traction roller. Where n is the diameter of the traction roller, and n is the number of codes corresponding to one revolution of the servo motor.

[0067] Read adjustment step size The step size is the speed increase ratio corresponding to every 1000 pulses, based on the step size. Calculate the corresponding adjustment speed ,Will The signal is sent to the servo controller 75, when the adjusted rotation angle is equal to... Afterwards, it returns to the normal speed N and transmits N to the servo controller 75, which then moves at a constant speed of N.

[0068] c. If |P1-P2|≥△P2, meaning the difference between the actual phase P2 and the set phase P1 is too large, even with precise cutting adjustments, the corresponding damping paper may be too long or too short, resulting in incomplete damping wrapping or excessive overlap. In this case, the PLC module 72 controls the paper receiving solenoid valve 77 to open, rejecting the corresponding damping paper. The rejection process is as follows: the paper receiving cylinder 15 retracts, preventing the damping paper from falling onto the L-shaped baffle 14. If three defective damping papers are rejected consecutively, the device stops and sends a signal to control the main unit to stop, displaying "Too much damping paper rejected during precise cutting" on the screen.

[0069] Although the invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various modifications and improvements can be made to the components or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides modifications and improvements to the components or layout, other uses will be apparent to those skilled in the art.

Claims

1. A device for cutting moistened paper, characterized in that, The utility model relates to a kind of paper cutting machine, including: Conveying channel (2), it is vertically arranged strip channel structure, at least including upper conveying section (2a) and lower conveying section (2b), color mark sensor (3) is arranged on upper conveying section (2a); Traction mechanism (5) is arranged between upper conveying section (2a) and lower conveying section (2b), and the traction mechanism (5) is used to pull down the paper for conveying into lower conveying section (2b); Shearing mechanism (6) is arranged at the bottom port of lower conveying section (2b), and the shearing mechanism (6) is used to cut the paper; Paper guide plate (8) is two and arranged up and down, and there is gap between two paper guide plates (8), and the paper guide plate (8) located above is fixedly arranged, and the paper guide plate (8) located below is provided with L-shaped baffle (14) on one side, and the L-shaped baffle (14) is connected with the output end of paper receiving air cylinder (15); Controller (7) is used to receive the signal of color mark sensor (3) and control traction mechanism (5), shearing mechanism (6) and paper receiving air cylinder (15).

2. A cut-to-size device for moisture retaining paper according to claim 1, characterized in that: It also includes backboard (1), and paper guide roller (4) is rotatably arranged above backboard (1), and conveying channel (2), traction mechanism (5), shearing mechanism (6), paper guide plate (8) and industrial computer (7) are all arranged on backboard (1), and support plate (13) is arranged on backboard (1), and support plate (13) is located on both sides of L-shaped baffle (14).

3. A cut-to-size device for moisture retaining paper according to claim 1, characterized in that: The traction mechanism (5) includes first traction roller (51) and second traction roller (52), and the first traction roller (51) and the second traction roller (52) are rotatably arranged on the backboard (1) and are in contact with each other, and a belt pulley (16) is arranged on the first traction roller (51) or the second traction roller (52), and the belt pulley (16) is located on the back side of the backboard (1).

4. The apparatus of claim 1 wherein: The shearing mechanism (6) includes a shearing roller (61) and a supporting roller (62), and the shearing roller (61) and the supporting roller (62) are rotatably arranged on the backboard (1), and a blade (63) is arranged on the shearing roller (61), and the blade (63) is in contact with the supporting roller (62) when the shearing roller (61) rotates, and a belt pulley (16) is arranged on the shearing roller (61), and the belt pulley (16) is located on the back side of the backboard (1).

5. A cut-to-size apparatus for a moisture retaining paper according to claim 3 or 4, characterized in that: The two belt pulleys (16) are connected by a belt (18), and one of the belt pulleys (16) is connected with the output end of a servo motor (17).

6. A moisture retaining paper cutting device as defined in claim 1, wherein: It also includes a toothed conveyor belt (9), which is located beside the paper guide plate (8), a cigarette pushing air cylinder (10) is arranged on the toothed conveyor belt (9), a push plate (11) is arranged on the output end of the cigarette pushing air cylinder (10), the push plate (11) is located on one side of the gap between the two paper guide plates (8), and an optical fiber sensor (12) for detecting the arrival of cigarette boxes is also arranged on one side of the toothed conveyor belt (9), and the optical fiber sensor (12) and the cigarette pushing air cylinder (10) are respectively electrically connected with the industrial computer (7).

7. A cut-to-size device for moisture retaining paper according to claim 1, characterized in that: The controller (7) comprises an encoder (71), a PLC module (72), an industrial computer (73) and a touch screen (74) connected in sequence, wherein the PLC module (72) communicates with the industrial computer (73) through an EtherCAT network cable, the color sensor (3) is electrically connected with the PLC module (72), and the output end of the PLC module (72) is connected with a servo controller (75), a smoke pushing electromagnetic valve (76) and a paper receiving electromagnetic valve (77) respectively, and the servo controller (75), the smoke pushing electromagnetic valve (76) and the paper receiving electromagnetic valve (77) are electrically connected with a servo motor (17), a smoke pushing cylinder (10) and a paper receiving cylinder (15) respectively.

8. A method of using a cut-to-size apparatus for moisture-conserved paper, characterized by, The method comprises the following steps: S1, turning on the power to start the cutting device; S2, after the device is started, the PLC module (72) reads the host speed through the encoder (71), sets the color sensor (3) to read the color phase P1 of the moisture-retention paper, when the moisture-retention paper passes through the color sensor (3), the PLC module (72) records the actual color phase P2 of the detected moisture-retention paper; S3, the PLC module (72) reads the minimum error △P1 and the maximum error △P2 set by the device, calculates the difference △P between the actual phase P2 and the set phase P1, i.e. △P=P1-P2; S4, the industrial computer (73) makes a judgment according to the comparison of the read △P, △P1 and △P2 data, and controls the cutting process according to the judgment result.

9. The method of using a cut-to-size device for a moisture retaining paper according to claim 1, wherein, In step S4, the cutting process is controlled according to the judgment result, which specifically comprises: a, if |P1-P2|≤△P1, i.e. the difference between the actual phase P2 and the set phase P1 is less than the set minimum error △P1, it is determined that no conveying adjustment is needed, the PLC module (72) transmits a synchronous speed signal N to the servo controller (75), and the servo controller (75) controls the servo motor (17) to rotate synchronously with the host; b. If ΔP1<|P1-P2|<ΔP2, that is, the difference between the actual phase P2 and the set phase P1 is greater than the set minimum error ΔP1 and less than the set maximum error ΔP2, the PLC module (72) needs to calculate the conveying speed N1 of the moisture-retention paper according to the size of |P1-P2| c, if |P1-P2|≥△P2, i.e. the difference between the actual phase P2 and the set phase P1 is too large, the PLC module (72) controls the paper receiving electromagnetic valve (77) to open, and the corresponding moisture-retention paper is rejected, if three defective moisture-retention papers are continuously rejected, the device stops and sends a signal to control the host to stop.

10. The method of using a cut-to-size device for a moisture retaining paper according to claim 9, wherein, The PLC module (72) needs to calculate the conveying speed N1 of the moisture-preserving paper according to the size, which specifically comprises: The advancing distance of each pulse signal and the rotation angle of the traction roller are calculated, and the calculation formula is: , , The corresponding angle difference is , so that the corresponding pulse number required by the moisture-retaining paper is adjusted , wherein is the advancing distance of the moisture-retaining paper, is the rotation angle of the traction roller, is the diameter of the traction roller, and n is the code number corresponding to one rotation of the servo motor. Read adjustment step size The step size is the speed increase ratio corresponding to every 1000 pulses, based on the step size. Calculate the corresponding adjustment speed ,Will The signal is sent to the servo controller (75) when the adjusted rotation angle is equal to... Afterwards, it returns to the normal speed N and transmits N to the servo controller (75), which moves at a constant speed of N.

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