A document positioning and adjustment mechanism for printing control instrument based on infrared scanning alignment

Abstract

The invention relates to the field of printing control instruments, and in particular to a printing control instrument document positioning and adjustment mechanism based on infrared scanning alignment; the mechanism is used to solve the problem that the document placed on the paper tray moves due to negligence in placing paper or movement when the paper tray is closed, resulting in a stamping position being different from a preset position; the invention adds an adjustment component at the center of the printing control instrument paper tray to adjust the offset or tilted paper placed on the paper tray; the adjustment component can be raised and lowered under the action of an electric support rod to avoid the bulge of the adjustment component affecting the placement of the paper; when positioning and adjusting the paper, the position of the paper is accurately determined and the paper is intelligently controlled and adjusted by an infrared scanner and infrared wave absorbing materials on the paper tray, as well as pixel point recognition and coordinate calculation, to ensure the accuracy of the paper adjustment; and when stamping, the bottom edge of the paper and the edge of the stamp are checked to further ensure the accuracy of the stamping position.

Description

Technical Field

[0001] The invention relates to the field of printing control instruments, in particular to a printing control instrument file positioning and adjustment mechanism based on infrared scanning alignment. Background Art

[0002] With the continuous development of the mechanical field, more and more manual operations have been mechanized, and the seal control device can replace people's manual stamping. As office equipment, the seal control device is widely used and frequently used, especially in the financial industry. The seal control device is more scientific and formal than the traditional manual stamping, and realizes the separation of people and seals to ensure the scientific, safe and efficient use of seals.

[0003] When a seal application is initiated, the application documents are scanned and uploaded through a scanner. When the seal is used, each copy is forcibly uploaded by the seal control device, so that the application documents and the completed documents can be compared in the system to prevent the risk of inconsistency between the application documents and the final documents.

[0004] At present, when the printing control device is in use, since the environment for stamping is closed inside the printing control device, it is easy for the document placed on the paper tray to move due to carelessness in inserting the paper or movement of the paper tray when it is closed, resulting in the situation that the stamping position is different from the preset position, affecting the stamping effect;

[0005] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0006] In the present invention, by adding an adjustment component at the center of the paper tray of the printing control instrument, the paper placed on the paper tray that is offset or tilted can be adjusted to ensure the standard position of the paper. The adjustment component can be raised and lowered under the action of an electric support rod to avoid the protrusion of the adjustment component affecting the placement of the paper. When adjusting the paper positioning, the position of the paper is accurately determined and the paper is intelligently controlled and adjusted by an infrared scanner and infrared absorbing materials on the paper tray, as well as pixel point recognition and coordinate calculation to ensure the accuracy of the paper adjustment. When stamping, the bottom edge of the paper and the edge of the stamp are checked to further ensure the accuracy of the stamp position. This solves the problem that the document placed on the paper tray moves due to negligence in placing the paper or movement when the paper tray is closed, resulting in the stamp position being different from the preset position. A printing control instrument file positioning and adjustment mechanism based on infrared scanning alignment is proposed.

[0007] A document positioning and adjustment mechanism for a printing control instrument based on infrared scanning alignment comprises an instrument housing, the interior of the instrument housing is hollow, a paper tray is slidably connected to the bottom surface of the interior of the instrument housing, and an adjustment component is installed in the middle of the paper tray;

[0008] The tool box is provided with a plurality of horizontal slide grooves on both sides of the inner wall of the instrument shell, and a cross beam is slidably connected inside the horizontal slide grooves, and two ends of the cross beam are respectively slidably connected to the horizontal slide grooves on both sides of the instrument shell, and the outer wall of the cross beam is slidably connected to a seal hanging rod, and an infrared scanner is fixedly installed on the lower surface of the seal hanging rod, and an upper pressure rod and a lower support rod are fixedly installed on the side wall of the seal hanging rod, and the upper pressure rod is located directly above the lower support rod, and a seal carrier plate is fixedly installed on the rear end of the inner wall of the instrument shell, and multiple groups of card slots are provided on one side of the seal carrier plate, and a seal mounting rod is snap-connected inside the card slot, and a hanging block is fixedly connected to the top end of the seal mounting rod, and the bottom end of the seal mounting rod is used for fixing and installing a seal, and a concave through groove is provided at the bottom end of the hanging block, and the top end of the seal mounting rod is connected inside the concave through groove, and the seal mounting rod is snap-connected in the card slot on the seal carrier plate, and the hanging block is slidably connected to the upper surface of the seal carrier plate, and the lower support rod can be inserted into the concave through groove at the bottom of the hanging block, and a control module is integrated inside the instrument shell.

[0009] As a preferred embodiment of the present invention, the adjustment component includes a lifting groove, a longitudinal control belt, a transverse control belt, a rotating roller and an integrated mounting frame, the lifting groove is opened on the upper surface of the paper tray, the lifting groove is an I-shaped structure, an electric support rod is fixedly installed on the lower surface of the lifting groove, an integrated mounting frame is fixedly installed on the upper surface of the electric support rod, transverse rotating rollers are rotatably connected on both sides of the integrated mounting frame, and transverse control belts are wrapped around the outer walls of the transverse rotating rollers. Support rods are fixedly installed at both ends of the integrated mounting frame, and longitudinal rotating rollers are rotatably connected on the support rods, and longitudinal control belts are wrapped around the outer walls of the longitudinal rotating rollers. Two groups of transverse control belts are symmetrically distributed on both sides of the integrated mounting frame, and two groups of longitudinal control belts are symmetrically distributed on both ends of the integrated mounting frame.

[0010] As a preferred embodiment of the present invention, the control module includes a main control unit, a correction control unit, an image acquisition unit, a coordinate calibration unit and a seal control unit, and the main control unit is communicatively connected with the above units;

[0011] The image acquisition unit is used to obtain the image of the paper placed on the paper tray and the surface image of the inside of the paper tray through infrared reflection, and convert it into a grayscale image and send it to the main control unit;

[0012] The correction control unit is used to obtain a grayscale image from the main control unit. After the correction control unit obtains the grayscale image for the first time, it establishes a plane rectangular coordinate system with a corner of the paper tray, and then analyzes the coordinate points of the paper image in the plane rectangular coordinate system to obtain the coordinates of the four corners of the paper image, and analyzes the coordinates of the four corners of the paper image to obtain the correction direction required when the paper image is corrected to have a bottom edge parallel to the bottom edge of the paper tray, and controls the adjustment component to rotate according to the correction direction. After the adjustment component executes the correction value, a correction completion signal is generated, and the correction completion signal is sent to the main control unit;

[0013] The main control unit sends a correction completion signal to the seal control unit. After receiving the correction completion signal, the seal control unit controls the crossbeam and the seal hanging rod to take the seal, and generates a seal preparation signal when the seal is taken above the paper stamping point, and sends the seal preparation signal to the main control unit. The coordinate calibration unit and the image acquisition unit simultaneously obtain the seal preparation signal from the main control unit. After obtaining the seal preparation signal, the image acquisition unit collects image information through infrared scanning, and sends the scanned image to the coordinate calibration unit. After receiving the graphic information, the coordinate calibration unit performs coordinate analysis on the paper to detect whether the paper adjustment is completed. At the same time, the graphic analysis is performed on the seal mounted under the seal hanging rod to detect whether the position where the seal is stamped meets the requirements.

[0014] As a preferred embodiment of the present invention, after the correction control unit obtains the four corner images of the paper, it obtains the coordinates of the four corners of the paper, i=1, 2, 3, 4, and then calculates the center point of the paper, x0= / 2, y0= / 2. The correction control unit obtains the coordinates of the center point of the preset adjustment component, and obtains the displacement a= of the transverse control band and the displacement b= of the longitudinal control band. The correction control unit controls the longitudinal control band and the transverse control band to move according to the displacements of a and b respectively, and moves the paper to the center of the paper tray.

[0015] As a preferred embodiment of the present invention, the correction control unit performs angle correction after the paper moves to the center of the paper tray. When performing the angle correction, the correction control unit compares y2 and y1. If y2>y1, a clockwise correction signal is generated; if y1<y2, a counterclockwise correction signal is generated. When the correction control unit generates a clockwise correction signal, the upper surface of the longitudinal control belt on the right side rotates downward, and the upper surface of the longitudinal control belt on the left side rotates upward. When the correction control unit generates a counterclockwise correction signal, the upper surface of the longitudinal control belt on the left side rotates upward, and the upper surface of the longitudinal control belt on the right side rotates downward. The image acquisition unit continuously acquires image information during the correction process performed by the correction control unit. When the correction control unit recognizes that y1=y2, a correction completion signal is generated.

[0016] As a preferred embodiment of the present invention, after receiving the scanned image, the coordinate calibration unit confirms the coordinates of the inflection point of the paper by performing pixel recognition on the scanned image, and at the same time confirms the coordinates of the area directly below the seal, and calculates the distance between the center point of the seal and the bottom and side edges of the paper based on the coordinates of the area directly below the seal and the coordinates of the inflection point of the paper, and compares it with the preset stamping distance. If the comparison result matches, a stamping signal is generated and sent to the seal control unit through the main control unit. After receiving the stamping signal, the seal control unit controls the seal to fall and completes the stamping. If the comparison result does not match, the difference between the distance between the center of the seal and the bottom and side edges of the paper and the preset stamping distance is adjusted accordingly. After the adjustment is completed, a stamping signal is generated to complete the stamping.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, an adjustment component is added at the center of the paper tray of the printing control instrument, so that the adjustment component can readjust the paper that is placed at an angle. At the same time, the adjustment component can be raised and lowered under the action of an electric support rod, so that the adjustment component is raised when adjustment is required, and the adjustment component can be lowered when the adjustment is completed, thereby avoiding the protrusion of the adjustment component affecting the placement of the paper.

[0019] 2. In the present invention, the positioning of the paper is achieved by establishing a coordinate system with the corners of the paper tray. At the same time, when adjusting the paper positioning, the center point of the document paper is accurately calculated by pixel point recognition and coordinate calculation, and the center point of the paper is moved to the center point of the paper tray and the adjustment component through the adjustment component. This ensures that the document is located at the center of the paper tray and the adjustment component is located at the center of the document, thereby improving the accuracy of the document rotation adjustment.

[0020] 3. In the present invention, the adjustment accuracy is improved by performing the file translation and rotation separately. At the same time, the file center and the center of the adjustment component can be more accurately coincided through translation, thereby improving the concentricity during rotation and improving the rotation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the seal hanging rod structure of the present invention;

[0024] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 4 It is a schematic diagram of the structure of the adjustment component of the present invention;

[0026] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0027] Figure 6 is a system block diagram of the present invention;

[0028] Figure 7 It is a schematic diagram of the inflection point of paper of the present invention.

[0029] In the figure: 1. Instrument housing; 2. Paper tray; 3. Crossbeam; 4. Hanging block; 5. Seal mounting rod; 6. Seal carrier plate; 7. Seal hanging rod; 8. Adjustment assembly; 81. Lifting slot; 82. Longitudinal control belt; 83. Transverse control belt; 84. Rotating roller; 85. Integrated mounting frame; 9. Upper pressure rod; 10. Lower support rod; 11. Electric support rod; 12. Horizontal slide; 13. Infrared scanner. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1

[0032] See also Figure 1 - Figure 7As shown, a document positioning and adjustment mechanism of a printing control instrument based on infrared scanning alignment includes an instrument housing 1, the interior of the instrument housing 1 is hollow, and a paper tray 2 is slidably connected to the bottom surface of the interior of the instrument housing 1. The paper tray 2 can be pulled out to place the document on the paper feed tray, and the paper tray 2 is pushed into the printing control instrument for stamping. An adjustment component 8 is installed in the middle of the paper tray 2. The surface of the paper tray 2 is covered with infrared absorbing material to reduce infrared reflection on the surface of the paper tray. The adjustment component 8 includes a lifting groove 81, a longitudinal control belt 82, a transverse control belt 83, a rotating roller 84 and an integrated mounting frame 85. The lifting groove 81 is opened on the upper surface of the paper tray 2 for accommodating the control belt. The lifting groove 81 is an I-shaped structure, and an electric support rod 11 is fixedly installed on the lower surface of the lifting groove 81. The longitudinal control belt 82 and the transverse control belt 83 can be lifted and lowered by the lifting control of the electric support rod 11. When adjustment is required or completed, the longitudinal control belt 82 and the transverse control belt 83 can be retracted to keep the surface of the paper tray 2 flat. An integrated mounting frame 85 is fixedly installed on the upper surface of the electric support rod 11. Transverse rotating rollers 84 are rotatably connected on both sides of the integrated mounting frame 85. The transverse rotating rollers 84 are wound around the outer walls of the transverse rotating rollers 84. The rotating rollers 84 on both sides of the integrated mounting frame 85 rotate independently to achieve the same-direction or different-direction rotation of the two groups of transverse control belts 83. Support rods are fixedly installed at both ends of the integrated mounting frame 85, and longitudinal rotating rollers 84 are rotatably connected on the support rods. The longitudinal control belt 82 is wound around the outer walls of the longitudinal rotating rollers 84. The two groups of longitudinal rotating rollers 84 also rotate independently. The two groups of transverse control belts 83 are symmetrically distributed on both sides of the integrated mounting frame 85, and the two groups of longitudinal control belts 82 are symmetrically distributed at both ends of the integrated mounting frame 85, thereby achieving multi-directional adjustment of document paper.

[0033] Horizontal slide grooves 12 are provided on both sides of the inner wall of the instrument housing 1, and a crossbeam 3 is slidably connected inside the horizontal slide grooves 12. The two ends of the crossbeam 3 are respectively slidably connected to the inside of the horizontal slide grooves 12 on both sides of the instrument housing 1, and the two ends of the crossbeam 3 slide in the horizontal slide grooves 12 through rollers driven by a motor. A seal hanging rod 7 is slidably connected to the outer wall of the crossbeam 3. An infrared scanner 13 is fixedly installed on the lower surface of the seal hanging rod 7. The infrared scanner 13 is a wide-angle scanner, thereby increasing the coverage of the scan. An upper pressure rod 9 and a lower support rod 10 are fixedly installed on the side wall of the seal hanging rod 7. The upper pressure rod 9 is located directly above the lower support rod 10. A seal carrier plate 6 is fixedly installed on the rear end of the inner wall of the instrument housing 1, and a plurality of card slots are provided on one side of the seal carrier plate 6. The card slots are internally engaged and connected There is a seal mounting rod 5, and multiple groups of card slots enable the seal carrier plate 6 to simultaneously accommodate multiple groups of seals for selection by the printing control instrument. The top of the seal mounting rod 5 is fixedly connected to a hanging block 4, and the bottom of the seal mounting rod 5 is used to fix the installed seal. The bottom of the hanging block 4 is provided with a concave through groove, and the top of the seal mounting rod 5 is connected to the inside of the concave through groove. The seal mounting rod 5 is snap-connected to the card slot on the seal carrier plate 6, and the hanging block 4 is slidably connected to the upper surface of the seal carrier plate 6. The lower support rod 10 can be inserted into the concave through groove at the bottom of the hanging block 4, and the upper pressure rod 9 can abut against the upper surface of the hanging block 4, thereby ensuring the stability of the hanging block 4 when moving. A control module is integrated inside the instrument housing 1, and the printing control instrument is controlled by the control module.

[0034] Embodiment 2

[0035] See also Figure 1 - Figure 7 As shown, the control module includes a main control unit, a correction control unit, an image acquisition unit, a coordinate calibration unit and a seal control unit. The main control unit is connected to the above units in communication, and the above units are integrated inside the control module, wherein the image acquisition unit is connected to the infrared scanner 13 in communication, the correction control unit is connected to the adjustment component 8 in communication, and the seal control unit is connected to the crossbeam 3 and the seal hanging rod 7 in communication;

[0036] The image acquisition unit is used to obtain the image of the paper placed on the paper tray 2 and the surface image of the inside of the paper tray 2 through infrared reflection, and convert it into a grayscale image, and send it to the main control unit. The infrared absorbing material on the paper tray 2 can reduce the infrared reflection on the paper tray 2, thereby improving the contrast of the document paper on the paper tray 2;

[0037] The correction control unit is used to obtain a grayscale image from the main control unit. After the correction control unit obtains the grayscale image for the first time, it establishes a plane rectangular coordinate system with a corner of the paper tray 2, and then analyzes the coordinate points of the paper image in the plane rectangular coordinate system to obtain the coordinates of the four corners of the paper image. The analysis process is as follows: the correction control unit first obtains the four corner images of the paper, obtains the coordinates of the four corners of the paper (xi, yi), i=1, 2, 3, 4, and then calculates the center point (x0, y0) of the paper, x0 =x1+x3 / 2, y0=y1+y3 / 2, the correction control unit obtains the coordinates (x5, y5) of the center point of the preset adjustment component 8, and obtains the displacement a=(x5-x0) of the horizontal control belt 83 and the displacement b=(y5-y0) of the longitudinal control belt 82. The correction control unit controls the longitudinal control belt 82 and the horizontal control belt 83 to move according to the displacements a and b respectively, and moves the paper to the center of the paper tray 2, thereby moving the center of the document paper to coincide with the center of the adjustment component 8, which is convenient for subsequent rotation adjustment and stamping with the seal hanging rod 7. The correction control unit moves the paper to the center of the paper tray 2, and moves the center of the document paper to coincide with the center of the adjustment component 8, which is convenient for subsequent rotation adjustment and stamping with the seal hanging rod 7. After moving to the center of paper tray 2, angle correction is performed. When performing angle correction, the correction control unit compares y2 and y1 to obtain the correction direction required to correct the paper image to make the bottom edge parallel to the bottom edge of paper tray 2, and controls the adjustment component 8 to rotate according to the correction direction. If y2>y1, a clockwise correction signal is generated, and if y1<y2, a counterclockwise correction signal is generated. When the correction control unit generates a clockwise correction signal, the upper surface of the longitudinal control belt 82 on the right side rotates downward, and the upper surface of the longitudinal control belt 82 on the left side rotates upward, so as to realize the clockwise rotation of the document paper and the correction. When the control unit generates a counterclockwise correction signal, the upper surface of the longitudinal control belt 82 on the left side rotates upward, and the upper surface of the longitudinal control belt 82 on the right side rotates downward, thereby realizing the counterclockwise rotation of the document paper. The image acquisition unit continuously acquires image information during the correction process of the correction control unit. When the correction control unit recognizes that y1=y2, it indicates that the bottom edge of the paper document is parallel to the edge of the paper tray 2. At the same time, combined with the overlap of the paper document and the center of the adjustment component 8, it indicates that the paper document is already in the center of the paper tray, and a correction completion signal is generated and sent to the main control unit.

[0038] The main control unit sends a correction completion signal to the seal control unit. After receiving the correction completion signal, the seal control unit controls the crossbeam 3 and the seal hanging rod 7 to take the seal, and generates a seal preparation signal when the seal is taken above the paper stamping point, and sends the seal preparation signal to the main control unit. The coordinate calibration unit and the image acquisition unit simultaneously obtain the seal preparation signal from the main control unit. After obtaining the seal preparation signal, the image acquisition unit collects image information through infrared scanning, and sends the scanned image to the coordinate calibration unit. After receiving the scanned image, the coordinate calibration unit confirms the coordinates of the inflection point of the paper by performing pixel point recognition on the scanned image. The inflection point coordinates are the coordinates of the two corners below the document. The width of the document is determined by the corner distance, and the extension of the corner is used to determine the width of the document. The line confirms the direction of the document, thereby determining the coordinates of the bottom plate of the paper and part of the coordinates of the side, and at the same time confirms the coordinates of the area directly below the seal, and calculates the distance between the center point of the seal and the bottom and side of the paper according to the coordinates of the area directly below the seal and the coordinates of the inflection point of the paper, and compares it with the preset stamping distance. If the comparison result matches, a stamping signal is generated and sent to the seal control unit through the main control unit. After receiving the stamping signal, the seal control unit controls the seal to fall and completes the stamping. If the comparison result does not match, the difference between the distance between the center of the seal and the bottom and side of the paper and the preset stamping distance is adjusted accordingly. During the adjustment, the seal position is adjusted by moving the crossbeam 3 or the seal hanging rod 7. After the adjustment is completed, a stamping signal is generated to complete the stamping.

[0039] In the present invention, by presetting the adjustment component 8 on the paper tray 2, it is possible to adjust the offset or tilted paper placed on the paper tray 2 to ensure the standard of the paper position. At the same time, through the infrared scanner and the infrared absorbing material on the paper tray, the position of the paper is accurately determined and the paper is intelligently controlled and adjusted to ensure the accuracy of the paper adjustment. When stamping, the bottom edge of the paper and the edge of the seal are checked to further ensure the accuracy of the stamping position.

[0040] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A document positioning and adjustment mechanism for a printing control instrument based on infrared scanning alignment, comprising an instrument housing (1), characterized in that: The interior of the instrument housing (1) is hollow, a paper tray (2) is slidably connected to the bottom surface of the interior of the instrument housing (1), and an adjustment component (8) is installed in the middle of the paper tray (2); Horizontal slide grooves (12) are provided on both sides of the inner wall of the instrument housing (1), and a crossbeam (3) is slidably connected inside the horizontal slide grooves (12). The two ends of the crossbeam (3) are respectively slidably connected to the inside of the horizontal slide grooves (12) on both sides of the instrument housing (1). A seal hanging rod (7) is slidably connected to the outer wall of the crossbeam (3), and an infrared scanner (13) is fixedly installed on the lower surface of the seal hanging rod (7). An upper pressure rod (9) and a lower support rod (10) are fixedly installed on the side wall of the seal hanging rod (7), and the upper pressure rod (9) is located directly above the lower support rod (10). A seal carrier plate (6) is fixedly installed on the rear end of the inner wall of the instrument housing (1), and the seal carrier plate ( 6) A plurality of card slots are provided on one side, wherein a seal mounting rod (5) is snap-connected inside the card slot, the top end of the seal mounting rod (5) is fixedly connected to a hanging block (4), the bottom end of the seal mounting rod (5) is used to fix and install a seal, the bottom end of the hanging block (4) is provided with a concave through groove, the top end of the seal mounting rod (5) is connected inside the concave through groove, the seal mounting rod (5) is snap-connected in the card slot on the seal carrier plate (6), the hanging block (4) is slidably connected to the upper surface of the seal carrier plate (6), the lower support rod (10) can be inserted into the concave through groove at the bottom of the hanging block (4), and a control module is integrated inside the instrument housing (1).

2. The document positioning and adjustment mechanism of the printing control instrument based on infrared scanning alignment according to claim 1 is characterized in that: The adjustment component (8) comprises a lifting groove (81), a longitudinal control belt (82), a transverse control belt (83), a rotating roller (84) and an integrated mounting frame (85); the lifting groove (81) is arranged on the upper surface of the paper tray (2); the lifting groove (81) is in an I-shaped structure; an electric support rod (11) is fixedly mounted on the lower surface of the lifting groove (81); an integrated mounting frame (85) is fixedly mounted on the upper surface of the electric support rod (11); and two sides of the integrated mounting frame (85) are rotatably connected to A transverse rotating roller (84), the outer wall of which is connected with a transverse control belt (83), support rods are fixedly mounted at both ends of the integrated mounting frame (85), and the support rods are rotatably connected with a longitudinal rotating roller (84), the outer wall of which is connected with a longitudinal control belt (82), two groups of the transverse control belts (83) are symmetrically distributed on both sides of the integrated mounting frame (85), and two groups of the longitudinal control belts (82) are symmetrically distributed on both ends of the integrated mounting frame (85).

3. The document positioning and adjustment mechanism of the printing control instrument based on infrared scanning alignment according to claim 1 is characterized in that: The control module includes a main control unit, a correction control unit, an image acquisition unit, a coordinate calibration unit and a seal control unit, and the main control unit is communicatively connected with the correction control unit, the image acquisition unit, the coordinate calibration unit and the seal control unit; The image acquisition unit is used to acquire an image of the paper placed on the paper tray (2) and an image of the surface inside the paper tray (2) by infrared reflection, and convert it into a grayscale image, and send it to the main control unit; The correction control unit is used to obtain a grayscale image from the main control unit. After the correction control unit obtains the grayscale image for the first time, it establishes a plane rectangular coordinate system with a corner of the paper tray (2), then analyzes the coordinate points of the paper image in the plane rectangular coordinate system, obtains the coordinates of the four corners of the paper image, and analyzes the coordinates of the four corners of the paper image to obtain the correction direction required to correct the paper image so that the bottom edge is parallel to the bottom edge of the paper tray (2), and controls the adjustment component (8) to rotate according to the correction direction. After the adjustment component (8) executes the correction value, it generates a correction completion signal and sends the correction completion signal to the main control unit; The main control unit sends a correction completion signal to the seal control unit. After receiving the correction completion signal, the seal control unit controls the crossbeam (3) and the seal hanging rod (7) to take the seal, and generates a seal preparation signal when the seal is taken to the top of the paper stamping point, and sends the seal preparation signal to the main control unit. The coordinate calibration unit and the image acquisition unit simultaneously obtain the seal preparation signal from the main control unit. After obtaining the seal preparation signal, the image acquisition unit collects image information through infrared scanning and sends the scanned image to the coordinate calibration unit. After receiving the graphic information, the coordinate calibration unit performs coordinate analysis on the paper to detect whether the paper adjustment is completed. At the same time, the coordinate calibration unit performs graphic analysis on the seal mounted below the seal hanging rod (7) to detect whether the stamped position of the seal meets the requirements.

4. The document positioning and adjustment mechanism of the printing control instrument based on infrared scanning alignment according to claim 3 is characterized in that: After the correction control unit obtains the images of the four corners of the paper, it obtains the coordinates (xi, yi) of the four corners of the paper, i=1, 2, 3, 4, and then calculates the center point (x0, y0) of the paper, x0=(x1+x3) / 2, y0=(y1+y3) / 2. The correction control unit obtains the coordinates (x5, y5) of the center point of the preset adjustment component (8), and obtains the displacement a=(x5-x0) of the transverse control belt (83) and the displacement b=(y5-y0) of the longitudinal control belt (82). The correction control unit controls the longitudinal control belt (82) and the transverse control belt (83) to move according to the displacements a and b, respectively, to move the paper to the center of the paper tray (2).

5. The document positioning and adjustment mechanism of the printing control instrument based on infrared scanning alignment according to claim 3 is characterized in that: The correction control unit performs angle correction after the paper moves to the center of the paper tray (2). When performing the angle correction, the correction control unit compares y2 and y1. If y2>y1, a clockwise correction signal is generated. If y1<y2, a counterclockwise correction signal is generated. When the correction control unit generates a clockwise correction signal, the upper surface of the longitudinal control belt (82) on the right side rotates downward, and the upper surface of the longitudinal control belt (82) on the left side rotates upward. When the correction control unit generates a counterclockwise correction signal, the upper surface of the longitudinal control belt (82) on the left side rotates upward, and the upper surface of the longitudinal control belt (82) on the right side rotates downward. The image acquisition unit continuously acquires image information during the correction process performed by the correction control unit. When the correction control unit recognizes that y1=y2, a correction completion signal is generated.

6. The document positioning and adjustment mechanism of the printing control instrument based on infrared scanning alignment according to claim 3 is characterized in that: After receiving the scanned image, the coordinate calibration unit confirms the coordinates of the inflection point of the paper by performing pixel recognition on the scanned image, and at the same time confirms the coordinates of the area directly below the seal, and calculates the distance between the center point of the seal and the bottom and side edges of the paper based on the coordinates of the area directly below the seal and the coordinates of the inflection point of the paper, and compares it with the preset stamping distance. If the comparison result matches, a stamping signal is generated and sent to the seal control unit through the main control unit. After receiving the stamping signal, the seal control unit controls the seal to fall and completes the stamping. If the comparison result does not match, corresponding adjustments are made based on the difference between the distance between the center of the seal and the bottom and side edges of the paper and the preset stamping distance. After the adjustment is completed, a stamping signal is generated to complete the stamping.

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