A high-precision closed-type paper cross-cutting machine

Abstract

This invention discloses a high-precision closed-loop paper cutting machine, relating to the field of paper production technology. Specifically, it is a high-precision closed-loop paper cutting machine, comprising a cutting machine, a paper conveying roller, and a mounting frame, with the paper conveying roller positioned on the right side of the cutting machine. This high-precision closed-loop paper cutting machine uses an anti-deviation roller to calibrate loose paper, preventing paper misalignment due to slack. When the paper's transmission speed is too high, the tensioning roller may not be able to tighten in time. In this case, a blower can be activated to agitate the paper, preventing partial overlap and thus preventing cutting misalignment. Simultaneously, when the blower is activated, an electric telescopic rod is engaged, opening a diverter plate to separate the loose paper from the finished product, facilitating subsequent inspection and preventing misaligned paper from mixing with qualified paper. This significantly improves the cutting precision and finished product quality.

Description

Technical Field

[0001] This invention relates to the field of paper production technology, specifically to a high-precision closed-type paper cutting machine. Background Technology

[0002] Before printing, the entire roll of paper needs to be cut. The equipment for cutting this paper is a paper cutter. This type of paper cutter generally includes a paper feeding mechanism, a paper feeding mechanism, and a cutting mechanism. The entire roll of paper is fed by the paper feeding mechanism and then conveyed to the cutting mechanism for cutting. To ensure smooth paper transport, a tension roller is installed between the feed roller and the transfer roller. When the speed of the transfer roller changes, the tension roller tightens the paper to maintain stable paper transport. During operation, the transfer roller often needs to be adjusted according to the working conditions of the cutting mechanism. The transmission speed of the roller motor is affected by the fact that the transmission motor of the paper feed roller always operates at its rated speed, while the oscillation range of the tension roller is limited. Therefore, the paper may become loose or too tight during transport, potentially tearing it. This can cause the paper feed roller to deviate from its intended path or fail to transport the paper at all, affecting the accuracy and continuity of the paper cross-cutting. Patent number (CN201320047632.4) discloses a synchronization adjustment mechanism for a paper cross-cutting machine, which proposes that "when the speed of the transmission motor of the paper feed roller changes, the tension of the paper causes the aluminum roller to move up and down." The lifting mechanism causes the rocker arm to swing, which in turn rotates the rocker shaft, causing the encoder bearing to rotate. This rotation of the encoder bearing then causes the drive motor of the paper feed roller to change speed, ensuring its transmission speed is synchronized with the drive motor on the paper feed roller. This structure ensures the cross-cutting machine remains stable and reliable during paper feeding, maintains precision in the cutting mechanism, and guarantees continuous and effective operation, resulting in excellent performance. Although the rocker arm can adjust the motor speed of the paper feed roller, it controls the rocker arm based on the paper tension. Therefore, even after the rocker arm adjustment is completed, there is a delay. This delay can cause loose paper to become overly tense, leading to tearing, or become too loose, affecting cutting. Traditional tensioning rollers can actively tension loose paper, but they cannot actively loosen tense paper. Furthermore, loosened paper is prone to shifting, causing the cutting line to deviate. Therefore, a structure that can adjust paper tension promptly without delay is crucial. In light of this, a high-precision, enclosed paper cross-cutting machine is proposed to solve these problems. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a high-precision, closed-loop paper cutting machine, which solves the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-precision, sealed paper cross-cutting machine, comprising a cross-cutting machine, a paper conveying roller, and a mounting frame. The paper conveying roller is disposed on the right side of the cross-cutting machine. The mounting frame is fixedly mounted on the side of the paper conveying roller. A first auxiliary roller is mounted on the inner side of the mounting frame. A sensor is mounted on the inner side of the mounting frame. A mounting plate is fixedly mounted on the upper surface of the mounting frame. Support columns are fixedly mounted on both the front and rear sides of the bottom of the mounting plate. Limit blocks are fixedly mounted on the bottom ends of the support columns. A return spring is provided on the outer surface of the support columns. A first mounting plate is movably mounted on the outer surface of the support columns. The first mounting frame has a drive motor fixedly mounted on its back. A rotating frame is fixedly mounted on the output shaft of the drive motor. A tightening roller is movably mounted on the upper side of the inner cavity of the rotating frame, and a loosening roller is movably mounted on the lower side of the inner cavity of the rotating frame. A second mounting frame is fixedly mounted on the upper surface of the mounting frame. A servo motor is fixedly mounted on the top of the second mounting frame. A lead screw is fixedly mounted on the output shaft of the servo motor. A threaded sleeve is threaded onto the outer surface of the lead screw. A connecting rod is fixedly mounted on the right side of the threaded sleeve. A drive rod is fixedly mounted on the bottom of the connecting rod. The other end of the drive rod is fixedly connected to the first mounting frame.

[0005] Optionally, the sensor is installed at an angle, the sensor's transmission direction is parallel, and the sensor is connected to a servo motor and a drive motor.

[0006] Optionally, cams are fixedly sleeved at both ends of the loosening roller, and the cams are movably installed inside the first mounting frame.

[0007] Optionally, limit rods are fixedly installed on both the front and rear sides of the screw sleeve, and the inner side of the second mounting bracket is provided with a movable groove that matches the limit rods.

[0008] Optionally, the diameter of the limiting block is larger than the diameter of the support column, the reset spring is fixedly connected to the upper surface of the limiting block, and the reset spring is fixedly connected to the first mounting bracket.

[0009] Optionally, an anti-deviation roller is fixedly installed on the upper surface of the cross-cutting machine, and anti-deviation blocks are provided at the front and rear ends of the outer surface of the anti-deviation roller, wherein the anti-deviation blocks are in the shape of a frustum.

[0010] Optionally, a second auxiliary roller is fixedly installed on the upper surface of the cross-cutting machine, and a blower is provided on the left side of the second auxiliary roller. The second auxiliary roller is located to the left of the anti-deviation roller.

[0011] Optionally, a guide plate is fixedly installed at the paper outlet of the cross-cutting machine, and a diverter plate is hinged to the middle of the guide plate. A first fixed frame is fixedly installed on the upper surface of the cross-cutting machine, and an electric telescopic rod is movably installed on the inner side of the first fixed frame. A second fixed frame is installed on the output shaft of the electric telescopic rod, and the second fixed frame is fixedly connected to the bottom of the diverter plate.

[0012] This invention provides a high-precision, closed-loop paper cutting machine, which has the following advantages:

[0013] 1. This high-precision closed-type paper cutter monitors the paper tension using a first auxiliary roller. When the paper is too loose, it contacts the lower first auxiliary roller, transmitting a signal to a servo motor. Starting the servo motor drives a lead screw, which in turn drives a threaded sleeve. The sleeve lowers a connecting rod, which in turn lowers a drive rod, which in turn lowers the first mounting frame. A tensioning roller then tensions the paper to prevent loosening. Because the tensioning roller is located to the right of the first auxiliary roller, it allows for pre-tensioning of the paper before it becomes loose and is transferred to the roller, preventing delays in the tensioning process.

[0014] 2. This high-precision closed-type paper cutter monitors the tightness of the paper using a first auxiliary roller. When the paper is too loose, it contacts the upper first auxiliary roller, which in turn drives a servo motor, causing the first mounting frame to descend. Simultaneously, the first auxiliary roller transmits a signal to the drive motor, which in turn rotates the rotating frame, causing the loosening roller to contact the paper. The friction of the loosening roller loosens the paper, but only the right side can be loosened at this time, while the left side remains taut. At this point, the cam rotates with the loosening roller. When the concave side of the cam faces downward, it briefly separates from the paper, allowing the paper to be adjusted to a normal state.

[0015] 3. This high-precision enclosed paper cutting machine uses anti-deviation rollers to calibrate loose paper, preventing it from shifting due to slack. When the paper's transmission speed is too fast, the tensioning rollers may not be able to tighten in time. In this case, starting a blower can blow the paper to prevent partial overlap and cut deviation caused by overlap. At the same time, when the blower is started, the electric telescopic rod needs to be activated to open the diverting plate and divert the loose paper products for further inspection, preventing miscut paper from mixing with qualified paper. This greatly improves the paper cutting accuracy and the quality of the finished product. Attached Figure Description

[0016] Figure 1 This is a side view of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention viewed from below;

[0018] Figure 3 This is a three-dimensional structural diagram of the second mounting bracket of the present invention;

[0019] Figure 4 This is a three-dimensional structural schematic diagram of the tension roller of the present invention;

[0020] Figure 5 This is a three-dimensional structural schematic diagram of the cam section of the present invention;

[0021] Figure 6 This is a three-dimensional structural diagram of the diverter plate of the present invention.

[0022] In the diagram: 1. Cross-cutting machine; 2. Paper feed roller; 3. Mounting frame; 4. First auxiliary roller; 5. Sensor; 6. Mounting plate; 7. Support column; 8. Limit block; 9. Return spring; 10. First mounting frame; 11. Drive motor; 12. Rotating frame; 13. Tightening roller; 14. Loosening roller; 15. Cam; 16. Second mounting frame; 17. Servo motor; 18. Lead screw; 19. Screw sleeve; 20. Limit rod; 21. Connecting rod; 22. Drive rod; 23. Anti-deviation roller; 24. Second auxiliary roller; 25. Blower; 26. Guide plate; 27. Diverter plate; 28. First fixed frame; 29. ​​Electric telescopic rod; 30. Second fixed frame. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] Please see Figures 1 to 5This invention provides a technical solution: a high-precision sealed cross-cutting machine for paper, including a cross-cutting machine 1, a paper conveying roller 2, and a mounting frame 3. The paper conveying roller 2 is located on the right side of the cross-cutting machine 1, and the mounting frame 3 is fixedly installed on the side of the paper conveying roller 2. The mounting frame 3 can protect the first auxiliary roller 4 and the sensor 5 from damage caused by human impact, and can also effectively prevent dust from accumulating on the surface of the first auxiliary roller 4 and the sensor 5, thus playing a good dustproof role. The first auxiliary roller 4 is installed on the inner side of the mounting frame 3, and the sensor 5 is installed on the inner side of the mounting frame 3. The sensor 5 is installed at an angle, and the transmission direction of the sensor 5 is parallel. The sensor 5 is connected to the servo motor 17 and the drive motor 11, which can enable... The sensor 5 is parallel to the paper being conveyed, thus preventing damage from the sensor 5 when the paper becomes slack or tense. A mounting plate 6 is fixedly mounted on the upper surface of the mounting frame 3. Support columns 7 are fixedly mounted on the front and rear sides of the bottom of the mounting plate 6. The support columns 7 support the return spring 9, preventing it from bending and breaking when deformed. A limit block 8 is fixedly mounted at the bottom of the support column 7. The diameter of the limit block 8 is larger than that of the support column 7. The limit block 8 provides support for the return spring 9 and also limits the first mounting bracket 10, preventing it from detaching from the outer surface of the support column 7, thus improving the overall integrity of the device. The return spring 9 is fixedly connected to... On the upper surface of the limiting block 8, the return spring 9 is fixedly connected to the first mounting frame 10. The outer surface of the support column 7 is provided with the return spring 9, and the first mounting frame 10 is movably mounted on the outer surface of the support column 7. The upper surface of the mounting frame 3 has a through groove adapted to the first mounting frame 10, allowing the first mounting frame 10 to descend smoothly. A drive motor 11 is fixedly mounted on the back of the first mounting frame 10. A rotating frame 12 is fixedly mounted on the output shaft of the drive motor 11. A tightening roller 13 is movably mounted on the upper side of the inner cavity of the rotating frame 12, and a loosening roller 14 is movably mounted on the lower side of the inner cavity of the rotating frame 12. The loosening roller 14 is made of rubber, allowing sufficient friction between the paper and the loosening roller 14, thereby loosening the paper on the right side. A second mounting bracket 16 is fixedly installed on the upper surface of frame 3. A servo motor 17 is fixedly installed on the top of the second mounting bracket 16. A lead screw 18 is fixedly installed on the output shaft of the servo motor 17. A threaded sleeve 19 is threaded onto the outer surface of the lead screw 18. Limiting rods 20 are fixedly installed on both the front and rear sides of the sleeve 19. An active groove adapted to the limiting rod 20 is opened on the inner side of the second mounting bracket 16. The limiting rod 20 can limit the sleeve 19, making the sleeve 19 more stable during driving and preventing the sleeve 19 from rotating during lifting. A connecting rod 21 is fixedly installed on the right side of the sleeve 19. A driving rod 22 is fixedly installed at the bottom of the connecting rod 21. The other end of the driving rod 22 is fixedly connected to the first mounting bracket 10.

[0025] Please see Figure 4 and Figure 5 The front and rear ends of the loosening roller 14 are fixedly sleeved with cams 15. The cams 15 are movably installed inside the first mounting frame 10. By utilizing the height interval generated when the cams 15 rotate, the loosening roller 14 can be temporarily separated from the paper, thereby allowing the overall state of the paper on the left and right sides to be adjusted, preventing the problem of the paper on the left side being too tense and the paper on the right side being too loose.

[0026] Please see Figure 2 and Figure 6 The upper surface of the cross-cutting machine 1 is fixedly installed with an anti-deviation roller 23. Anti-deviation blocks are set at the front and rear ends of the outer surface of the anti-deviation roller 23. The anti-deviation blocks are truncated cone-shaped. The smooth surface of the anti-deviation blocks can not only prevent the paper from deviating, but also reduce the friction between the paper and the anti-deviation blocks, thereby allowing the paper to be smoothly transmitted in a relaxed state.

[0027] Please see Figure 2 and Figure 6 A second auxiliary roller 24 is fixedly installed on the upper surface of the cross-cutting machine 1. A blower 25 is arranged on the left side of the second auxiliary roller 24. The second auxiliary roller 24 is located to the left of the anti-deviation roller 23, which allows the blower 25 to calibrate the position of the paper before micro-opening the paper, thus effectively improving the cutting accuracy.

[0028] Please see Figure 6 A guide plate 26 is fixedly installed at the paper outlet of the cross-cutting machine 1. The guide plate 26 is installed at an angle to allow the paper to slide smoothly and facilitates the paper to be diverted from the diverting plate 27. The diverting plate 27 is hinged to the middle of the guide plate 26. A first fixed frame 28 is fixedly installed on the upper surface of the cross-cutting machine 1. An electric telescopic rod 29 is movably installed on the inner side of the first fixed frame 28. The electric telescopic rod 29 is located at the edge of the diverting plate 27, which allows the paper to fall smoothly from the diverting plate 27 and avoids the electric telescopic rod 29 interfering with the falling of the paper. A second fixed frame 30 is installed on the output shaft of the electric telescopic rod 29. The second fixed frame 30 is fixedly connected to the bottom of the diverting plate 27. The electric telescopic rod 29 is connected to the blower 25, which can be activated in time to open the diverting plate 27, making it convenient to detect the paper cut in a relaxed state.

[0029] In summary, this high-precision closed-type paper cross-cutting machine operates by first monitoring the paper tension using the first auxiliary roller 4. When the paper is too loose, it contacts the lower first auxiliary roller 4, transmitting a signal to the servo motor 17. This servo motor 17 then drives the lead screw 18 to rotate, which in turn drives the screw sleeve 19. The screw sleeve 19 then lowers the connecting rod 21, which in turn lowers the drive rod 22. The drive rod 22 then lowers the first mounting frame 10, and the tension roller 13 tensions the paper. When the paper is too loose, it contacts the upper first auxiliary roller 4, which in turn drives the servo motor 17, causing the first mounting frame 10 to lower. Simultaneously, the first auxiliary roller 13... 4 will transmit the signal to the drive motor 11. Starting the drive motor 11 will drive the rotating frame 12 to rotate, which will cause the loosening roller 14 to contact the paper. The friction of the loosening roller 14 will be used to loosen the paper. At the same time, the cam 15 will rotate with the loosening roller 14. When the concave side of the cam 15 is downward, it will separate from the paper for a moment, so that the paper can adjust its overall state. When the paper transmission speed is too fast, the tensioning roller 13 will not be able to tighten in time. The blower 25 needs to be started to blow the paper, so that the paper is briefly kept in a slightly taut state before cutting. At the same time, when the blower 25 is started, the electric telescopic rod 29 needs to be started, so that the electric telescopic rod 29 opens the diverter plate 27 to divert the finished paper in the loosened part, which is convenient for the next step of paper inspection.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a 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. Moreover, 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] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision sealed cross-cutting machine for paper, comprising a cross-cutting machine (1), a paper conveying roller (2), and a mounting frame (3), wherein the paper conveying roller (2) is disposed on the right side of the cross-cutting machine (1), and the mounting frame (3) is fixedly mounted on the side of the paper conveying roller (2), characterized in that: A first auxiliary roller (4) is installed on the inner side of the mounting frame (3), a sensor (5) is installed on the inner side of the mounting frame (3), a mounting plate (6) is fixedly installed on the upper surface of the mounting frame (3), support columns (7) are fixedly installed on both the front and rear sides of the bottom of the mounting plate (6), a limit block (8) is fixedly installed at the bottom end of the support column (7), a reset spring (9) is provided on the outer surface of the support column (7), a first mounting bracket (10) is movably installed on the outer surface of the support column (7), a drive motor (11) is fixedly installed on the back of the first mounting bracket (10), a rotating bracket (12) is fixedly installed on the output shaft of the drive motor (11), and the rotating bracket (12) is fixedly installed on the output shaft of the drive motor (11). 12) A tightening roller (13) is movably installed on the upper side of the inner cavity, and a loosening roller (14) is movably installed on the lower side of the inner cavity of the rotating frame (12). A second mounting frame (16) is fixedly installed on the upper surface of the mounting frame (3). A servo motor (17) is fixedly installed on the top of the second mounting frame (16). A lead screw (18) is fixedly installed on the output shaft of the servo motor (17). A threaded sleeve (19) is threaded onto the outer surface of the lead screw (18). A connecting rod (21) is fixedly installed on the right side of the threaded sleeve (19). A drive rod (22) is fixedly installed at the bottom of the connecting rod (21). The other end of the drive rod (22) is fixedly connected to the first mounting frame (10).

2. The high-precision closed-type paper cross-cutting machine according to claim 1, characterized in that: The sensor (5) is installed at an angle, the transmission direction of the sensor (5) is parallel, and the sensor (5) is connected to the servo motor (17) and the drive motor (11).

3. The high-precision closed-type paper cross-cutting machine according to claim 1, characterized in that: The front and rear ends of the loosening roller (14) are both fixedly sleeved with cams (15), and the cams (15) are movably installed inside the first mounting frame (10).

4. The high-precision closed-type paper cross-cutting machine according to claim 1, characterized in that: Limiting rods (20) are fixedly installed on both the front and rear sides of the threaded sleeve (19), and the inner side of the second mounting bracket (16) is provided with a movable groove that matches the limiting rods (20).

5. A high-precision closed-type paper cross-cutting machine according to claim 1, characterized in that: The diameter of the limiting block (8) is larger than the diameter of the support column (7). The reset spring (9) is fixedly connected to the upper surface of the limiting block (8). The reset spring (9) is fixedly connected to the first mounting bracket (10).

6. The high-precision closed-type paper cross-cutting machine according to claim 1, characterized in that: The upper surface of the cross-cutting machine (1) is fixedly equipped with an anti-deviation roller (23), and anti-deviation blocks are provided at the front and rear ends of the outer surface of the anti-deviation roller (23). The anti-deviation blocks are in the shape of a frustum.

7. A high-precision closed-type paper cross-cutting machine according to claim 6, characterized in that: A second auxiliary roller (24) is fixedly installed on the upper surface of the cross-cutting machine (1). A blower (25) is provided on the left side of the second auxiliary roller (24). The second auxiliary roller (24) is located on the left side of the anti-deviation roller (23).

8. A high-precision closed-type paper cross-cutting machine according to claim 1, characterized in that: A guide plate (26) is fixedly installed at the paper outlet of the cross-cutting machine (1). A diverter plate (27) is hinged to the middle of the guide plate (26). A first fixed frame (28) is fixedly installed on the upper surface of the cross-cutting machine (1). An electric telescopic rod (29) is movably installed on the inner side of the first fixed frame (28). A second fixed frame (30) is installed on the output shaft of the electric telescopic rod (29). The second fixed frame (30) is fixedly connected to the bottom of the diverter plate (27).

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