Automatic aligning and deviation rectifying mechanism for balance paper conveying

By designing an automatic alignment correction mechanism in the balanced paper conveying system, the two-way correction of the balanced paper is achieved by using ultrasonic sensors and the deviation drive members, the problem of offsetting the balanced paper during the conveying process is solved, improving the deviation correction effect and reducing costs.

CN119841154AInactive Publication Date: 2025-04-18LINYI XINHENG PAPER CO LTD
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Patent Information

Application Number
CN202510128622.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-05
Publication Date
2025-04-18
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The balanced paper is easily offset during the transportation process, resulting in leaking the edges when packing after palletization, causing creases or even damage under stress. The existing deviation correction method has poor effect.

Method used

An automatic alignment and correction mechanism including a detection unit and a deviation correction unit is designed. The edge position of the balanced paper is detected by an ultrasonic sensor, and the deviation correction drive member, the deviation correction contact member and the deviation correction member are used to correct the deviation to achieve bidirectional correction of the lower end face of the balanced paper and the front and rear end faces.

Benefits of technology

Improves the deviation correction effect, ensuring that the balance sheet remains in the correct position during the conveying process, avoiding edge leakage and stress damage, while reducing driving costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of automatic alignment and deviation rectification for balance paper conveying, in particular to an automatic alignment and deviation rectification mechanism for balance paper conveying, which comprises a detection unit and a deviation rectification unit. A deviation rectification driving piece controls a deviation rectification contact piece to rotate, and under the cooperation of a deviation rectification linkage piece, a deviation rectification piece is driven to move; the balance paper is rectified in two rectifying modes of the lower end face, the front end face and the rear end face, the rectifying effect is improved, in the whole rectifying process, the ultrasonic sensor continues to detect the edge position information of the balance paper on the first conveying cylinder and the second conveying cylinder, and it is ensured that when the balance paper returns to the center position, the rectifying driving piece returns to the initial position in time.
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Description

Technical Field

[0001] The invention relates to the technical field of automatic alignment and deviation correction for balanced paper conveying, in particular to an automatic alignment and deviation correction mechanism for balanced paper conveying. Background Art

[0002] Balance paper is melamine impregnated paper, which is a kind of plain base paper or printed decorative paper that is impregnated with amino resin and dried to a certain degree, and has a certain resin content and volatile content. It can be glued to each other or to the base material of artificial board after hot pressing. Its main processing steps are: base paper pulp preparation, base paper preparation, impregnation treatment, drying treatment, pattern printing, surface treatment, slitting and packaging and warehousing. After cutting, the balance paper is directly transported by rollers and then stacked. However, the balance paper is very easy to deviate during the transportation process. Therefore, in order to ensure that the balance paper is packed after palletizing, some of the offset edges of the balance paper leak out, thereby causing creases or even damage due to force, the balance paper needs to be corrected.

[0003] The traditional method of correcting the deviation is to use multiple guide rollers with adjustable angles to change their own angles to guide the paper back to the correct conveying direction, but this method is relatively simple and the correction effect is poor. Summary of the invention

[0004] In view of the above problems, the embodiment of the present application provides an automatic alignment and correction mechanism for balanced paper conveying to solve the poor correction effect and technical problems in the related art. In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions.

[0005] An automatic alignment and correction mechanism for balanced paper conveying according to an embodiment of the present application comprises a detection unit and a correction unit, wherein the correction unit is arranged on the right side of the upper end of the detection unit and is used to correct the balance paper; the detection unit comprises a workbench, wherein a fixing plate is symmetrically fixedly installed on the upper end of the workbench, and a conveying cylinder 1 and a conveying cylinder 2 are rotatably connected between the front and rear fixing plates, and the conveying cylinder 1 and the conveying cylinder 2 are arranged left and right, and the conveying cylinder 1 and the conveying cylinder 2 are respectively driven by the motor on the fixing plate, and a bidirectional screw 1 is rotatably connected between the front and rear fixing plates, and the bidirectional screw 1 is located on the upper side between the conveying cylinder 1 and the conveying cylinder 2, and the bidirectional screw 1 is symmetrically threadedly connected to a fixed shell body, and an ultra-high-speed screw 2 is fixedly installed on the lower end of the fixed shell body An acoustic wave sensor and a fixed shell are fixedly installed with a guide rod at one end away from the center of the workbench, and the guide rod slides forward and backward and passes through the corresponding fixed plate; the correction unit includes a limit piece, and a correction contact piece for correcting the deviation by contacting with the horizontal plane of the balance paper is symmetrically arranged at the middle of the upper end of the workbench and on the right side of the second conveying cylinder, and a correction driving piece for controlling the rotation of the correction contact piece is symmetrically arranged at the upper end of the workbench and on the right side of the second conveying cylinder, the correction driving piece is in contact with the correction contact piece, and a correction piece for contacting with the front and rear ends of the balance paper for correcting the deviation is arranged at the upper end of the workbench and on the right side of the correction contact piece, and a correction linkage piece for enabling the correction driving piece to control the correction piece is commonly arranged between the correction piece and the correction driving piece.

[0006] According to an embodiment of the present invention, the deviation correcting contact piece includes a rectangular vertical plate, which is symmetrically fixedly installed in the middle of the upper end of the workbench and located on the right side of the second conveying cylinder. A support plate is hinged on the upper end of the rectangular vertical plate, and a guide roller is rotatably connected to the middle of the support plate. The guide roller has rounded corners at both ends, and the guide roller is driven by the motor on the corresponding support plate.

[0007] According to an embodiment of the present invention, the deviation correction drive component includes a wedge block, a wedge block is symmetrically connected to the upper end of the workbench and located at the second right end of the conveying cylinder for sliding left and right, a fixed block is slidably connected to the upper end of the wedge block, a retractable connecting rod is fixedly connected between the fixed block and the workbench, a U-shaped hole is opened in the middle of the fixed block, the U-shaped hole supports the end of the guide roller, and a rectangular groove matching the wedge block is opened at the right end of the fixed plate.

[0008] According to an embodiment of the present invention, the correcting member includes a door-shaped bracket, a door-shaped bracket is fixedly installed on the right side of the guide roller located at the upper end of the right side of the workbench and on the far right, a rectangular positioning plate is fixedly installed on the lower end of the horizontal section of the door-shaped bracket, a control rod is hinged on the left side of the lower end of the rectangular positioning plate, two rotating rods are hinged on the lower end of the rectangular positioning plate and on the right side of the control rod, the upper ends of the two rotating rods and the upper ends of the control rods are hinged with two linkage rods, and the linkage rods are symmetrically arranged front to back.

[0009] According to an embodiment of the present invention, the front and rear sides of the lower end of the control rod and the front and rear sides of the lower ends of the two rotating rods are symmetrically rotatably connected with correction cylinders, and hemispherical blocks are fixedly installed on the lower ends of the correction cylinders. The hemispherical blocks are in contact with the workbench, and the correction cylinders are driven respectively by the corresponding control rods and the motors on the two rotating rods.

[0010] According to an embodiment of the present invention, the correcting linkage comprises a vertical plate, a vertical plate is fixedly installed on the upper right end of the wedge block, a connecting rod is fixedly installed on the right end of the vertical plate, a sliding groove is symmetrically provided on the left end of the control rod, a sliding block is slidably connected in the sliding groove, and the left ends of the sliding blocks are respectively hinged to the corresponding connecting rods.

[0011] According to an embodiment of the present invention, the outer surface of the guide roller and the outer surface of the deviation-correcting cylinder are both covered with rubber sleeves, and the rubber sleeves with different roughness can be replaced at any time according to needs.

[0012] According to the embodiment of the present invention, the conveying cylinder 1, the conveying cylinder 2, the guide roller and the deviation correction cylinder rotate slowly, so as to adjust the balance paper at any time according to the detection result.

[0013] It can be seen from the above technical solutions that the present invention has the following advantages:

[0014] 1. In the present invention, the correction contact member is controlled to rotate by the correction driving member, and with the cooperation of the correction linkage member, the correction member is driven to move at the same time, and the balance paper is corrected in two ways: the lower end surface and the front and rear end surfaces, to improve the correction effect. During the whole correction process, the ultrasonic sensor continues to detect the edge position information of the balance paper on the conveying cylinder 1 and the conveying cylinder 2 to ensure that when the balance paper returns to the center position, the correction driving member returns to the initial position in time.

[0015] 2. In the present invention, by utilizing a guide roller that moves upward on one side, the conveying path of the balancing paper on that side during transportation is increased, thereby correcting and compensating for the balancing paper. At the same time, with the cooperation of the sliding block, the connecting rod and the vertical plate, the wedge block drives the control rod to rotate, and driven by the linkage rod, the other two rotating rods rotate together, thereby reducing the distance between the correcting cylinders, so that the correcting cylinders correct the front and rear ends of the balancing paper, so as to achieve the purpose of driving one correcting method to drive another correcting method, thereby reducing the driving cost in the entire correcting process.

[0016] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by an automatic alignment and correction mechanism for balanced paper conveying provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a main-view stereoscopic structure provided according to an embodiment of the present invention is shown.

[0019] Figure 2 Shows Figure 1 A local enlarged view of location N.

[0020] Figure 3 Shows Figure 1 A local enlarged view of point M.

[0021] Figure 4 The left side cross-sectional plan view of the deviation-correcting cylinder, the hemispherical block and the connecting rod of the present invention is shown.

[0022] Figure 5 A left-view stereoscopic structural schematic diagram of the ultrasonic sensor and the deviation-correcting linkage component is shown.

[0023] Figure 6 Shown are situations where the balanced paper is not deflected and where deflection may occur.

[0024] The above drawings include the following reference numerals:

[0025] 1. Detection unit; 11. Workbench; 12. Fixed plate; 13. Conveying cylinder 1; 14. Conveying cylinder 2; 15. Bidirectional screw 1; 16. Fixed shell; 17. Ultrasonic sensor; 18. Guide rod; 2. Correction unit; 21. Limiting piece; 22. Correction contact piece; 221. Rectangular vertical plate; 222. Support plate; 223. Guide roller; 23. Correction drive piece; 231. Wedge block; 232. Fixed block; 233. Connecting rod; 234. U-shaped hole; 235. Rectangular groove; 24. Correction piece; 241. Gate bracket; 242. Rectangular positioning plate; 243. Control rod; 2431. Correction cylinder; 2432. Hemispherical block; 244. Rotating rod; 245. Linkage rod; 25. Correction linkage piece; 251. Vertical plate; 252. Sliding groove; 253. Sliding block. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] See also Figure 1 and Figure 5 , an automatic alignment and correction mechanism for balanced paper conveying, comprising a detection unit 1 and a correction unit 2, the correction unit 2 being arranged on the upper right side of the detection unit 1 for correcting the balance paper; the detection unit 1 comprises a workbench 11, a fixed plate 12 is symmetrically fixedly installed on the upper end of the workbench 11, a conveying cylinder 13 and a conveying cylinder 14 are rotatably connected between the front and rear fixed plates 12, the conveying cylinder 13 and the conveying cylinder 14 are arranged left and right, the conveying cylinder 13 and the conveying cylinder 14 are respectively driven by the motor on the fixed plate 12, a bidirectional screw 15 is rotatably connected between the front and rear fixed plates 12, the bidirectional screw 15 is located on the upper side between the conveying cylinder 13 and the conveying cylinder 14, the bidirectional screw 15 is symmetrically threadedly connected to a fixed shell 16, and an ultrasonic sensor 1 is fixedly installed at the lower end of the fixed shell 16 7. A guide rod 18 is fixedly installed at one end of the fixed shell 16 facing away from the center of the workbench 11, and the guide rod 18 slides forward and backward and passes through the corresponding fixed plate 12; the correcting unit 2 includes a limiter 21, and a correcting contact member 22 for correcting by contacting with the horizontal plane of the balance paper is symmetrically arranged in the middle of the upper end of the workbench 11 and on the right side of the conveying cylinder 14, and a correcting driving member 23 for controlling the rotation of the correcting contact member 22 is symmetrically arranged on the upper end of the workbench 11 and on the right side of the conveying cylinder 14, and the correcting driving member 23 is in contact with the correcting contact member 22, and a correcting member 24 for contacting with the front and rear ends of the balance paper for correcting is arranged on the upper end of the workbench 11 and on the right side of the correcting contact member 22, and a correcting linkage member 25 for enabling the correcting driving member 23 to control the correcting member 24 is commonly arranged between the correcting member 24 and the correcting driving member 23.

[0028] The processed and surface-treated balance paper is conveyed to the right and cut by a slitting machine. The cut balance paper continues to be conveyed to the right driven by the conveying roller. The motor drives the conveying cylinder 13 and the conveying cylinder 2 14 to rotate. The balance paper first contacts the conveying cylinder 13, and then contacts the conveying cylinder 2 14 as the conveying cylinder 13 is conveyed to the right. When the balance paper contacts the conveying cylinder 13, the distance between the balance paper and the fixed plate 12 on both sides of the front and rear ends of the central axis of the conveying cylinder 13 is detected by an ultrasonic sensor 17. When the balance paper contacts the conveying cylinder 2 14, the ultrasonic sensor 17 detects the distance between the balance paper and the fixed plate 12 on both sides of the front and rear ends of the central axis of the conveying cylinder 13. When the balance paper is in contact with the conveying tube 14, the ultrasonic sensor 17 is used to detect the edge position information of the balance paper on both sides of the front and rear ends of the central axis of the conveying tube 1. When the balance paper contacts the conveying tube 2, the ultrasonic sensor 17 is used to detect the edge position information of the balance paper on both sides of the front and rear ends of the central axis of the conveying tube 2. The ultrasonic sensor 17 converts the detected information into an electrical signal and sends it to an external controller. The controller processes the information provided by the ultrasonic sensor 17 and makes decisions, and then outputs a control signal to an external actuator. The actuator controls the deviation correction drive 23 to perform corresponding actions according to the control signal to correct the deviation of the balance paper. The controller and the actuator are both prior art. When the balance paper is offset, the edge position information of the balance paper on the front and rear ends of the conveying tube 13 and the edge position information of the balance paper on the front and rear ends of the conveying tube 2 may be different. On the conveying tube 13 and the conveying tube 2, the edge position information on the same side of the balance paper is different. When any one of the two situations occurs or both situations occur at the same time, the external actuator controls the deviation correction on the side with a larger distance difference. The driving member 23 controls the rotation of the deflection correction contact member 22, and with the cooperation of the deflection correction linkage member 25, it drives the deflection correction member 24 to move at the same time to correct the deflection of the balancing paper. The ultrasonic sensor 17 continues to detect the edge position information of the balancing paper on the conveying cylinder 13 and the conveying cylinder 2 14 until the edge position information of the balancing paper on the conveying cylinder 13 is the same as the edge position information of the balancing paper on the conveying cylinder 2 14, and the edge position information of the balancing paper on the same side of the conveying cylinder 13 and the conveying cylinder 2 14 is the same. At this time, the external actuator controls the deflection correction driving member 23 to return to the initial position.

[0029] According to an embodiment of the present invention, the deviation correcting contact member 22 includes a rectangular vertical plate 221, which is symmetrically fixedly installed in the middle of the upper end of the workbench 11 and on the right side of the conveying cylinder 14. A support plate 222 is hinged at the upper end of the rectangular vertical plate 221, and a guide roller 223 is rotatably connected to the middle of the support plate 222. The guide roller 223 has rounded corners at both ends, and the guide roller 223 is driven by the motor on the corresponding support plate 222.

[0030] According to an embodiment of the present invention, the deviation correction drive member 23 includes a wedge block 231, which is symmetrically connected to the upper end of the workbench 11 and located at the right end of the conveying cylinder 14 so as to slide left and right. A fixed block 232 is slidably connected to the upper end of the wedge block 231, and a retractable connecting rod 233 is fixedly connected between the fixed block 232 and the workbench 11. A U-shaped hole 234 is provided in the middle of the fixed block 232, and the U-shaped hole 234 supports the end of the guide roller 223. A rectangular groove 235 matching the wedge block 231 is provided at the right end of the fixed plate 12.

[0031] According to an embodiment of the present invention, the correcting member 24 includes a gate-shaped bracket 241, which is fixedly installed on the right side of the guide roller 223 located on the far right and at the upper end of the right side of the workbench 11, and a rectangular positioning plate 242 is fixedly installed on the lower end of the horizontal section of the gate-shaped bracket 241, a control rod 243 is hinged on the left side of the lower end of the rectangular positioning plate 242, and two rotating rods 244 are hinged on the lower end of the rectangular positioning plate 242 and on the right side of the control rod 243, and two linkage rods 245 are hinged on the upper ends of the two rotating rods 244 and the upper ends of the control rod 243, and the linkage rods 245 are symmetrically arranged front to back.

[0032] According to an embodiment of the present invention, the front and rear sides of the lower end of the control rod 243 and the front and rear sides of the lower ends of the two rotating rods 244 are symmetrically rotatably connected with a correction cylinder 2431, and a hemispherical block 2432 is fixedly installed at the lower end of the correction cylinder 2431. The hemispherical block 2432 is in contact with the workbench 11, and the correction cylinder 2431 is driven by the corresponding control rod 243 and the motors on the two rotating rods 244 respectively.

[0033] According to an embodiment of the present invention, the correcting linkage 25 includes a vertical plate 251, a vertical plate 251 is fixedly installed on the upper right end of the wedge block 231, a connecting rod 233 is fixedly installed on the right end of the vertical plate 251, a sliding groove 252 is symmetrically provided on the left end of the control rod 243, a sliding block 253 is slidably connected in the sliding groove 252, and the left ends of the sliding blocks 253 are respectively hinged to the corresponding connecting rods 233.

[0034] According to the embodiment of the present invention, the outer surface of the guide roller 223 and the outer surface of the deviation-correcting cylinder 2431 are both covered with rubber sleeves, and the rubber sleeves with different roughness can be replaced at any time according to needs.

[0035] According to the embodiment of the present invention, the conveying cylinder 1 13, the conveying cylinder 2 14, the guide roller 223 and the deviation correction cylinder 2431 rotate slowly, so as to adjust the balance paper at any time according to the detection result.

[0036] The working principle of the present invention is as follows: the balancing paper that has been processed and surface treated is conveyed to the right and slit by a slitting machine. The slit balancing paper continues to be conveyed to the right driven by the conveying roller. The motor drives the conveying cylinder 13 and the conveying cylinder 2 14 to rotate. The balancing paper first contacts the conveying cylinder 13, and then contacts the conveying cylinder 2 14 as the conveying cylinder 13 is conveyed to the right. When the balancing paper contacts the conveying cylinder 13, the ultrasonic sensor 17 is used to detect the edge position information of the balancing paper on both sides of the front and rear ends of the central axis of the conveying cylinder 13. When the balancing paper contacts the conveying cylinder 2 14, the ultrasonic sensor 17 is used to detect the edge position information of the balancing paper on both sides of the front and rear ends of the central axis of the conveying cylinder 2 14.

[0037] The ultrasonic sensor 17 converts the detected information into an electrical signal and sends it to an external controller. The controller processes the information provided by the ultrasonic sensor 17 and makes decisions, and then outputs a control signal to an external actuator. The actuator controls the wedge block 231 to perform corresponding actions according to the control signal to realize the deviation correction of the balance paper. The controller and the actuator are both existing technologies. When the balance paper is offset, the edge position information of the balance paper on the conveying cylinder 13 may be different from the edge position information of the balance paper on the conveying cylinder 2 14, and the edge position information on the same side of the balance paper on the conveying cylinder 13 and the conveying cylinder 2 14 may be different.

[0038] When any one of the two situations occurs or both situations occur at the same time, the external actuator controls the wedge block 231 located on the side with a larger distance difference to move to the left, thereby driving the fixed block 232 to move upward, driving the guide roller 223 to move upward, and the motor drives the guide rollers 223 on the front and rear sides to rotate respectively, so as to convey the balancing paper to the right. By using the guide roller 223 that moves upward on one side, the conveying path of the guide roller 223 on this side during the transportation of the balancing paper becomes larger, thereby correcting and compensating for the deviation. At the same time, with the cooperation of the sliding block 253, the connecting rod 233 and the vertical plate 251, the wedge block 231 drives the control rod 243 to rotate, and driven by the linkage rod 245, the other two rotating rods 244 rotate together, so that the distance between the correction cylinders 2431 becomes smaller, so that the correction cylinders 2431 correct the deviation of the front and rear ends of the balancing paper.

[0039] The ultrasonic sensor 17 continues to detect the edge position information of the front and rear sides of the balancing paper on the conveying cylinder 13 and the conveying cylinder 2 14 until the edge position information of the front and rear sides of the balancing paper on the conveying cylinder 13 is the same, the edge position information of the front and rear sides of the balancing paper on the conveying cylinder 2 14 is the same, and the edge position information of the same side of the balancing paper on the conveying cylinder 13 and the conveying cylinder 2 14 is the same. At this time, the external actuator controls the wedge block 231 to return to the initial position. During the whole process, the conveying cylinder 13, the conveying cylinder 2 14 and the guide roller 223 and the correction cylinder 2431 rotate slowly, which is convenient for adjustment at any time. The bidirectional screw 15 is driven to rotate manually or by an external motor, and the distance between the ultrasonic sensors 17 is adjusted according to the width of the balancing paper to avoid the balancing paper position on one side exceeding the detection range of the ultrasonic sensor 17 when the balancing paper is offset, resulting in inaccurate detection results.

[0040] In the description of the present invention, it is necessary to understand that the terms "center", "middle", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "end", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, the terms "first", "second", "number one", "number two", "one", "two" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic alignment and correction mechanism for balanced paper conveying, characterized in that , comprising a detection unit (1) and a correction unit (2), wherein the correction unit (2) is arranged on the upper right side of the detection unit (1) and is used to correct the balance paper; The detection unit (1) comprises a workbench (11), a fixed plate (12) is fixedly installed symmetrically at the upper end of the workbench (11), a conveying cylinder (13) and a conveying cylinder (14) are rotatably connected between the front and rear fixed plates (12), the conveying cylinder (13) and the conveying cylinder (14) are arranged left and right, a bidirectional screw (15) is rotatably connected between the front and rear fixed plates (12), the bidirectional screw (15) is located on the upper side between the conveying cylinder (13) and the conveying cylinder (14), the bidirectional screw (15) is symmetrically threadedly connected to a fixed shell (16) at the front and rear, an ultrasonic sensor (17) is fixedly installed at the lower end of the fixed shell (16), and a guide rod (18) is fixedly installed at one end of the fixed shell (16) facing away from the center of the workbench (11), and the guide rod (18) slides forward and backward and penetrates the corresponding fixed plate (12); The deflection correction unit (2) comprises a limiter (21); a deflection correction contact member (22) for correcting deflection by contacting with a horizontal plane of a balancing paper is symmetrically arranged at the middle of the upper end of the workbench (11) and located on the right side of the second conveying cylinder (14); a deflection correction driving member (23) for controlling the rotation of the deflection correction contact member (22) is symmetrically arranged at the upper end of the workbench (11) and located on the right side of the second conveying cylinder (14); the deflection correction driving member (23) is in contact with the deflection correction contact member (22); a deflection correction member (24) for correcting deflection by contacting with front and rear ends of the balancing paper is arranged at the upper end of the workbench (11) and located on the right side of the deflection correction contact member (22); and a deflection correction linkage member (25) for enabling the deflection correction driving member (23) to control the deflection correction member (24) is arranged between the deflection correction member (24) and the deflection correction driving member (23).

2. The automatic alignment and correction mechanism for balanced paper conveying according to claim 1, characterized in that: The deviation correcting contact member (22) comprises a rectangular vertical plate (221), which is symmetrically fixedly installed at the middle of the upper end of the workbench (11) and located on the right side of the second conveying cylinder (14) in the front and rear directions, and a support plate (222) is hingedly connected to the upper end of the rectangular vertical plate (221). A guide roller (223) is rotatably connected to the middle of the support plate (222). The guide roller (223) has rounded corners at both ends. The guide roller (223) is driven by a motor on the corresponding support plate (222), and the first conveying cylinder (13) and the second conveying cylinder (14) are respectively driven by motors on the fixed plate (12).

3. The automatic alignment and correction mechanism for balanced paper conveying according to claim 1, characterized in that: The deviation-correcting driving member (23) comprises a wedge-shaped block (231), which is symmetrically connected to the upper end of the workbench (11) and located at the right end of the second conveying cylinder (14) in a sliding manner from left to right, and is slidably connected to the upper end of the wedge-shaped block (231). A fixed block (232) is slidably connected to the upper end of the wedge-shaped block (231). A retractable connecting rod (233) is fixedly connected between the fixed block (232) and the workbench (11). A U-shaped hole (234) is provided in the middle of the fixed block (232), and the U-shaped hole (234) supports the end of the guide roller (223). A rectangular groove (235) matching the wedge-shaped block (231) is provided at the right end of the fixed plate (12).

4. The automatic alignment and correction mechanism for balanced paper conveying according to claim 2, characterized in that: The deviation correcting member (24) comprises a gate-shaped bracket (241), the gate-shaped bracket (241) is fixedly mounted on the right side of the upper right end of the workbench (11) and on the right side of the guide roller (223) located on the far right, a rectangular positioning plate (242) is fixedly mounted on the lower end of the horizontal section of the gate-shaped bracket (241), a control rod (243) is hingedly connected to the left side of the lower end of the rectangular positioning plate (242), two rotating rods (244) are hingedly connected to the lower end of the rectangular positioning plate (242) and located on the right side of the control rod (243), the upper ends of the two rotating rods (244) and the upper end of the control rod (243) are jointly hingedly connected to two linkage rods (245), and the linkage rods (245) are symmetrically arranged front to back.

5. The automatic alignment and correction mechanism for balanced paper conveying according to claim 4, characterized in that: The front and rear sides of the lower end of the control rod (243) and the front and rear sides of the lower ends of the two rotating rods (244) are symmetrically rotatably connected with a correction cylinder (2431), and a hemispherical block (2432) is fixedly installed at the lower end of the correction cylinder (2431). The hemispherical block (2432) is in contact with the workbench (11), and the correction cylinder (2431) is driven by the corresponding control rod (243) and the motors on the two rotating rods (244).

6. The automatic alignment and correction mechanism for balanced paper conveying according to claim 3, characterized in that: The deviation-correcting linkage member (25) comprises a vertical plate (251), the vertical plate (251) is fixedly mounted on the upper right end of the wedge block (231), a connecting rod (233) is fixedly mounted on the right end of the vertical plate (251), a sliding groove (252) is symmetrically provided at the left end of the control rod (243), a sliding block (253) is slidably connected in the sliding groove (252), and the left ends of the sliding blocks (253) are respectively hinged to the corresponding connecting rods (233).

7. The automatic alignment and correction mechanism for balanced paper conveying according to claim 5, characterized in that: The outer surface of the guide roller (223) and the outer surface of the deviation-correcting cylinder (2431) are both covered with rubber sleeves, and rubber sleeves with different roughness can be replaced at any time according to needs.

8. The automatic alignment and correction mechanism for balanced paper conveying according to claim 5, characterized in that: The conveying cylinder 1 (13), the conveying cylinder 2 (14), the guide roller (223) and the deviation correction cylinder (2431) rotate slowly, so that the balance paper can be adjusted at any time according to the detection result.