Electric eye detection and calibration auxiliary mechanism applied to die-cutting machine

Abstract

The invention discloses an electric eye detection calibration auxiliary mechanism applied to a die-cutting machine, and belongs to the field of die-cutting machine quality detection.The calibration auxiliary mechanism comprises a rack, a guide roller is arranged at the right end of the rack, and a tensioning roller and a driving mechanism used for driving the tensioning roller to move up and down are arranged at the left end of the rack; the electric eye further comprises an electric eye body and an auxiliary calibration mechanism. The auxiliary calibration mechanism comprises a linear guide rail connected with the electric eye body, supporting cylinders fixedly connected to the two ends of the linear guide rail, first rotating shafts fixedly connected to the two ends of the tensioning roller and rotationally connected with the left ends of the supporting cylinders, supporting rods slidably inserted into the right ends of the supporting cylinders, and second rotating shafts fixedly connected to the two ends of the guide roller and rotationally connected with the right ends of the supporting rods. When the tensioning roller moves up and down to change the gradient of the inclined surface of the printing paper, the detection eye of the electric eye body is always kept vertical to the printing paper, so that the detection error caused by the inclination of the detection eye and the printing paper is avoided, the accuracy of defective product identification is ensured, and the efficiency and reliability of the die-cutting machine for managing and controlling defective products are maintained.

Description

TECHNICAL FIELD

[0001] The application relates to the quality detection technical field of a die-cutting machine, in particular to an electric eye detection calibration auxiliary mechanism applied to a die-cuting machine. BACKGROUND

[0002] In a printing-die-cutting integrated production process, under the traditional process, a paper strip is arranged in the printed material to mark the potential defective area in the printing process, but the isolation paper strip is easy to fall off without being noticed by the operator when entering the die-cutting production stage. Due to the lack of effective real-time monitoring mechanism, the defective product corresponding to the fallen paper strip cannot be identified and isolated in time, resulting in the defective product directly flowing into the next process. This not only needs to invest a large amount of manpower to select the materials of the subsequent processes one by one, increases the production labor cost and time cost, and more importantly, there is a risk that the defective product will eventually mix into the finished product. Once it happens, it will cause a major quality accident and damage the product quality.

[0003] To solve the above-mentioned drawbacks of the traditional process, the existing die-cutting machine has been technically improved: in the printing process, for various printing abnormalities, a self-adhesive label is used to accurately mark the side of the paper roll; at the same time, a detection electric eye is installed at the unwinding part of the die-cutting machine, which uses the detection electric eye to realize real-time identification of the self-adhesive label on the side of the paper roll. When the detection electric eye captures the self-adhesive label signal, the matching alarm device will immediately trigger an alarm to remind the packaging personnel to conduct a full inspection on the piece of material corresponding to the alarm, so as to realize the timely interception of defective products, effectively prevent defective products from flowing into the subsequent processes, and improve the efficiency and reliability of defective product control.

[0004] However, in the actual production process, in order to facilitate the printing paper to always be in a flat state, a tensioning roller mechanism is usually installed at the unwinding part, which makes the printing paper maintain a tensioning state through the action of the tensioning roller mechanism, thereby providing a convenient condition for the detection electric eye to accurately identify the self-adhesive label. However, since the detection electric eye is generally fixed on the die-cutting machine by bolts, its installation position is relatively fixed. When the printing paper changes the slope of its own inclined plane under the action of the tensioning roller mechanism, it will directly cause the detection eye of the detection electric eye and the plane where the printing paper is located to be not in a vertical state, and the two are often in an inclined state, and this inclined state will cause detection errors and adversely affect the accuracy of defective product identification.

[0005] Therefore, the application provides an electric eye detection calibration auxiliary mechanism applied to a die-cutting machine to solve the above-mentioned problems. SUMMARY

[0006] The application provides an electric eye detection calibration auxiliary mechanism applied to a die-cutting machine, aiming at solving the problems of the existing detection electric eye fixed on the die-cuting machine through bolts, the fixed position, the detection eye of the detection electric eye and the plane of the printed paper not being in a vertical state but being in an inclined state when the printed paper changes the slope of the inclined plane under the action of the tensioning roller mechanism, and the problems of detection errors and influence on the accuracy of the identification of defective products.

[0007] To achieve the above object, the application provides the following technical scheme: an electric eye detection calibration auxiliary mechanism applied to a die-cuting machine, comprising a rack, a guide roller arranged at the right end of the rack, a tensioning roller arranged at the left end of the rack, and a driving mechanism for driving the tensioning roller to move up and down; further comprising an electric eye body and an auxiliary calibration mechanism for keeping the detection eye of the electric eye body and the printed paper in a vertical state; the auxiliary calibration mechanism comprises a linear guide rail connected with the electric eye body, a support cylinder fixed at both ends of the linear guide rail, a first rotating shaft fixed at both ends of the tensioning roller and rotatably connected with the left end of the support cylinder, a support rod slidingly inserted into the right end of the support cylinder, and a second rotating shaft fixed at both ends of the guide roller and rotatably connected with the right end of the support rod; wherein the straight line where the support cylinder and the support rod are located is perpendicular to the axes of the tensioning roller and the guide roller. When the driving mechanism drives the tensioning roller to move up and down, the first rotating shaft at both ends of the tensioning roller moves synchronously, the support cylinder moves along the outside of the support rod under the driving of the first rotating shaft because the first rotating shaft is rotatably connected with the left end of the support cylinder, the relative sliding of the support cylinder and the support rod can always keep the direction of the straight line where the support cylinder and the support rod are located unchanged because the straight line where the support cylinder and the support rod are located is perpendicular to the axes of the tensioning roller and the guide roller, and the second rotating shaft at the right end of the support rod is rotatably connected with the guide roller which is fixed in position, and the electric eye body is synchronously adjusted in position through the linear guide rail, so that the detection eye of the electric eye body is always kept in a vertical state with the printed paper.

[0008] Preferably, in order to facilitate the connection of the auxiliary calibration mechanism with the tensioning roller and the guide roller, the first rotating shaft is connected with the support cylinder through a bearing, and the second rotating shaft is connected with the support rod through a bearing. The flexible rotation between the first rotating shaft and the support cylinder and between the second rotating shaft and the support rod is realized, the friction loss of the connection parts is reduced, the risk of failure caused by the wear of the parts is reduced, the stable connection of the auxiliary calibration mechanism with the tensioning roller and the guide roller is facilitated, and the normal linkage adjustment of the auxiliary calibration mechanism when the tensioning roller moves is ensured.

[0009] Preferably, to reduce wear on the support rod and support cylinder: the upper and lower ends of the support rod are each provided with multiple ball bearings rotatably along its length, and the inner wall of the support cylinder is provided with an arc-shaped guide groove for matching the ball bearings. This reduces the coefficient of friction when the support rod and support cylinder slide relative to each other, reduces the degree of wear on both, extends the service life of the support rod and support cylinder, and ensures smooth sliding of the support rod within the support cylinder, preventing the auxiliary calibration mechanism from getting stuck due to excessive friction, and ensuring the stable maintenance of the perpendicularity between the photoelectric sensor and the printing paper.

[0010] Preferably, the driving mechanism includes bearing seats mounted at both ends of the tension roller, vertical slots formed on the frame for the bearing seats to move up and down, and a hydraulic cylinder fixed to the frame. The output end of the hydraulic cylinder passes through the frame and is fixedly connected to the bearing seats. The hydraulic cylinder enables the bearing seats to move up and down within the vertical slots, allowing for convenient and stable up-and-down movement of the tension roller. This enables flexible adjustment of the paper tension, ensuring the paper remains flat and providing favorable conditions for accurate identification of self-adhesive labels by the photoelectric sensor. It also facilitates synchronous calibration of the photoelectric sensor in conjunction with an auxiliary calibration mechanism.

[0011] Preferably, to prevent the bearing housing from detaching from the vertical groove: limiting blocks are fixedly connected to both the left and right ends of the bearing housing, and limiting grooves for matching the limiting blocks are provided on both sides of the vertical groove. This limits the range of movement of the bearing housing within the vertical groove, effectively preventing the bearing housing from detaching from the vertical groove due to excessive movement, avoiding equipment failure or safety accidents caused by the tension roller falling off, and ensuring the operational stability and safety of the drive mechanism when adjusting the position of the tension roller.

[0012] Preferably, to facilitate the adaptation of the photoelectric sensor body to printing papers of different widths, a position adjustment mechanism is also included. This mechanism includes a slider slidably mounted on the linear guide rail, a guide groove formed on the linear guide rail, a screw rotatably mounted in the guide groove, a nut threaded onto the screw and fixedly connected to the slider, and a drive motor fixedly mounted at the front end of the linear guide rail. The front end of the screw passes through the linear guide rail and is fixedly connected to the output shaft of the drive motor. A support plate is fixedly mounted on the slider, and the photoelectric sensor body is fixedly mounted on the support plate. Through the design of the position adjustment mechanism, the position of the photoelectric sensor body on the linear guide rail can be flexibly adjusted, allowing the photoelectric sensor body to adapt to printing papers of different widths and accurately detect self-adhesive labels on printing papers of different widths. This eliminates the need to replace the dedicated photoelectric sensor or adjust the overall structure of the equipment, significantly improving the practicality and applicability of the photoelectric sensor detection and calibration auxiliary mechanism.

[0013] Preferably, to facilitate observation of the position scale of the photoelectric sensor body on the linear guide rail: a scale is fixedly mounted on the linear guide rail, and a pointer adapted to the scale is fixedly connected to the support plate. Through the cooperation of the scale and the pointer, the specific position scale of the photoelectric sensor body on the linear guide rail can be displayed intuitively, allowing operators to quickly and accurately determine whether the position of the photoelectric sensor body meets the requirements of the current printing paper width detection, reducing the number of trial and error attempts during adjustment, and improving the accuracy and efficiency of photoelectric sensor body position adjustment.

[0014] Preferably, to facilitate observation of whether the position of the photoelectric sensor body deviates from the self-adhesive label: an auxiliary positioning mechanism is provided on the support plate. The auxiliary positioning mechanism includes a guide cylinder fixedly inserted into the support plate and a positioning indicator plate inserted into the guide cylinder. This auxiliary positioning mechanism provides operators with an intuitive reference, allowing for quick and easy observation of whether the detection position of the photoelectric sensor body deviates from the self-adhesive label on the printed paper. This enables timely detection and correction of positional deviations of the photoelectric sensor body, preventing missed or false detections of the self-adhesive label due to positional deviation, and ensuring the accuracy of the photoelectric sensor detection.

[0015] Preferably, to facilitate adjustment of the position of the positioning indicator plate on the guide cylinder: a fixing screw plate is fixedly connected to the upper end of the guide cylinder, and a strip-shaped groove is formed on the positioning indicator plate, into which a knurled bolt for threaded connection with the fixing screw plate is inserted. This allows for convenient adjustment of the position of the positioning indicator plate on the guide cylinder, enabling it to adapt to self-adhesive labels in different positions or printing paper of different widths without disassembling the guide cylinder or positioning indicator plate. The operation is simple and efficient, further enhancing the flexibility and practicality of the auxiliary positioning mechanism.

[0016] This application, through the design of an auxiliary calibration mechanism, ensures that the detection eye of the photoelectric sensor remains perpendicular to the printing paper when the tension roller moves up and down to change the slope of the printing paper's tilt surface. This avoids detection errors caused by the tilt of the detection eye relative to the printing paper, guarantees the accuracy of defective product identification, and maintains the efficiency and reliability of the die-cutting machine in controlling defective products.

[0017] This application, through the design of a position adjustment mechanism, can flexibly adjust the position of the photoelectric sensor body on the linear guide rail, making the photoelectric sensor body adaptable to printing paper of different widths and accurately detecting self-adhesive labels on printing paper of different widths. There is no need to replace the dedicated photoelectric sensor or adjust the overall structure of the equipment, which greatly improves the practicality and applicability of the photoelectric sensor detection and calibration auxiliary mechanism.

[0018] This application, through the cooperation of a scale and pointer, can intuitively display the specific position scale of the photoelectric sensor body on the linear guide rail, making it convenient for operators to quickly and accurately determine whether the position of the photoelectric sensor body meets the current requirements for detecting the width of the printing paper, reducing the number of trial and error during the adjustment process, and improving the accuracy and efficiency of the photoelectric sensor body position adjustment.

[0019] This application, through the design of an auxiliary positioning mechanism, can provide operators with an intuitive reference, making it easy to quickly observe whether the detection position of the photoelectric sensor body deviates from the self-adhesive label on the printed paper. It can promptly detect and correct the positional deviation of the photoelectric sensor body, avoid missed or false detection of self-adhesive labels due to photoelectric sensor position deviation, and ensure the accuracy of photoelectric sensor detection.

[0020] This application utilizes a combination of a fixing screw plate, a strip groove, and knurled bolts to easily adjust the position of the positioning indicator plate on the guide cylinder. This allows the positioning indicator plate to be adapted to self-adhesive labels in different positions or printing paper of different widths without disassembling the guide cylinder or positioning indicator plate. The operation is simple and efficient, further enhancing the flexibility and practicality of the auxiliary positioning mechanism. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a photoelectric sensor calibration auxiliary mechanism used in a die-cutting machine. Figure 2 for Figure 1 A schematic diagram of the other side of the structure; Figure 3 This is a structural cross-sectional view of the auxiliary calibration mechanism; Figure 4 This is a schematic diagram of the internal structure of the support cylinder; Figure 5 A schematic diagram of the drive mechanism. Figure 6 This is a schematic diagram of the position adjustment mechanism; Figure 7 This is a schematic diagram of the auxiliary positioning mechanism.

[0022] In the picture: 1. Frame; 2. Guide roller; 3. Tension roller; 4. Drive mechanism; 41. Bearing seat; 411. Limit block; 42. Vertical groove; 421. Limit groove; 43. Hydraulic cylinder; 5. Photoelectric sensor body; 6. Auxiliary calibration mechanism; 61. Linear guide rail; 62. Support cylinder; 621. Arc-shaped guide groove; 63. First rotating shaft; 64. Support rod; 641. Ball bearing; 65. Second rotating shaft; 7. Position adjustment mechanism; 71. Slider; 72. Guide groove; 73. Screw; 74. Nut; 75. Drive motor; 76. Support plate; 8. Scale; 81. Pointer; 9. Auxiliary positioning mechanism; 91. Guide cylinder; 92. Positioning indicator plate; 93. Fixing screw plate; 94. Strip groove; 95. Knurled bolt. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] Example 1 This embodiment provides an auxiliary mechanism for photoelectric sensor detection and calibration applied to a die-cutting machine, such as... Figures 1-7 As shown, the calibration auxiliary mechanism includes a frame 1, a guide roller 2 at the right end of the frame 1, a tension roller 3 at the left end, and a drive mechanism 4 for driving the tension roller 3 to move up and down; it also includes a photoelectric sensor body 5 and an auxiliary calibration mechanism 6 for keeping the detection eye of the photoelectric sensor body 5 perpendicular to the printing paper; the auxiliary calibration mechanism 6 includes a linear guide rail 61 connected to the photoelectric sensor body 5, support cylinders 62 fixed to both ends of the linear guide rail 61, a first rotating shaft 63 fixed to both ends of the tension roller 3 and rotatably connected to the left end of the support cylinder 62, a support rod 64 slidably inserted into the right end of the support cylinder 62, and a second rotating shaft 65 fixed to both ends of the guide roller 2 and rotatably connected to the right end of the support rod 64; wherein, the straight line where the support cylinder 62 and the support rod 64 are located is perpendicular to the axis of the tension roller 3 and the guide roller 2. By designing the auxiliary calibration mechanism 6, when the tension roller 3 moves up and down to change the slope of the printing paper's inclined surface, it ensures that the detection eye of the photoelectric sensor 5 remains perpendicular to the printing paper, avoiding detection errors caused by the tilt of the detection eye relative to the printing paper, ensuring the accuracy of defective product identification, and maintaining the efficiency and reliability of the die-cutting machine's control over defective products. When the drive mechanism 4 drives the tension roller 3 to move up and down, the first rotating shafts 63 at both ends of the tension roller 3 will move synchronously. Since the first rotating shaft 63 is rotatably connected to the left end of the support cylinder 62, the support cylinder 62 will slide along the outside of the support rod 64 under the drive of the first rotating shaft 63. Furthermore, since the straight line where the support cylinder 62 and the support rod 64 are located is perpendicular to the axis of the tension roller 3 and the guide roller 2, and the right end of the support rod 64 is rotatably connected to the second rotating shafts 65 at both ends of the guide roller 2, and the position of the guide roller 2 is fixed, the relative sliding of the support cylinder 62 and the support rod 64 can always maintain the direction of their straight line unchanged. In turn, the linear guide rail 61 drives the photoelectric sensor 5 to adjust its position synchronously, so that the detection eye of the photoelectric sensor 5 always remains perpendicular to the printing paper.

[0025] To facilitate the connection between the auxiliary calibration mechanism 6 and the tension roller 3 and guide roller 2: the first rotating shaft 63 is connected to the support cylinder 62 via bearings, and the second rotating shaft 65 is connected to the support rod 64 via bearings. This allows for flexible rotation between the first rotating shaft 63 and the support cylinder 62, and between the second rotating shaft 65 and the support rod 64, reducing frictional loss at the connection points and minimizing the risk of failure due to component wear. Simultaneously, it facilitates a stable connection between the auxiliary calibration mechanism 6 and the tension roller 3 and guide roller 2, ensuring normal linkage adjustment of the auxiliary calibration mechanism 6 when the tension roller 3 moves. The inner ring of the bearing is fixedly connected to the first rotating shaft 63 and the second rotating shaft 65 respectively, and the outer ring of the bearing is fixedly connected to the inner wall of the left end of the support cylinder 62 and the inner wall of the right end of the support rod 64 respectively. When the tension roller 3 drives the first rotating shaft 63 to rotate or move, and the guide roller 2 supports the support rod 64, the inner and outer rings of the bearing can roll relative to each other, converting the sliding friction between the first rotating shaft 63 and the support cylinder 62, and the second rotating shaft 65 and the support rod 64 into rolling friction. This achieves the rotational connection between the two and reduces friction loss, facilitating the connection and linkage between the auxiliary calibration mechanism 6 and the tension roller 3 and the guide roller 2.

[0026] To reduce wear on the support rod 64 and the support cylinder 62, multiple ball bearings 641 are rotatably provided at both the upper and lower ends of the support rod 64 along its length. An arc-shaped guide groove 621 is provided on the inner wall of the support cylinder 62 to mate with the ball bearings 641. This reduces the coefficient of friction when the support rod 64 and the support cylinder 62 slide relative to each other, reducing wear and extending their service life. It also ensures smooth sliding of the support rod 64 within the support cylinder 62, preventing excessive friction from causing the auxiliary calibration mechanism 6 to jam, and ensuring the stable maintenance of the perpendicularity between the photoelectric sensor 5 and the printing paper. The ball bearings 641, which are rotatably mounted at the upper and lower ends of the support rod 64 along the length direction, will embed into the arc-shaped guide groove 621 on the inner wall of the support cylinder 62 when the support rod 64 slides relative to the support cylinder 62. As the support rod 64 moves within the support cylinder 62, the ball bearings 641 will roll within the arc-shaped guide groove 621, converting the sliding friction between the support rod 64 and the support cylinder 62 into the rolling friction of the ball bearings 641, thereby reducing the wear of both and ensuring smooth sliding.

[0027] The drive mechanism 4 includes bearing seats 41 mounted at both ends of the tension roller 3, vertical grooves 42 formed on the frame 1 for the bearing seats 41 to move up and down, and a hydraulic cylinder 43 fixedly mounted on the frame 1. The output end of the hydraulic cylinder 43 passes through the frame 1 and is fixedly connected to the bearing seats 41. The hydraulic cylinder 43 enables the bearing seats 41 to move up and down inside the vertical grooves 42, which can conveniently and stably drive the tension roller 3 to move up and down, realize flexible adjustment of the tightness of the printing paper, ensure that the printing paper is always in a flat state, provide good conditions for the photoelectric sensor 5 to accurately identify self-adhesive labels, and facilitate the synchronous calibration of the photoelectric sensor 5 in conjunction with the auxiliary calibration mechanism 6. The hydraulic cylinder 43 in the drive mechanism 4 is fixedly mounted on the frame 1. When the hydraulic cylinder 43 is started, its output end will push or pull the bearing seat 41 fixed to it. Since the bearing seat 41 is installed at both ends of the tension roller 3, and the frame 1 is provided with a vertical groove 42 for the bearing seat 41 to move up and down, the bearing seat 41 will slide up and down along the vertical groove 42, thereby driving the tension roller 3 to move up and down, so as to adjust the tightness of the printing paper.

[0028] To prevent the bearing housing 41 from detaching from the vertical groove 42, limit blocks 411 are fixedly attached to both the left and right ends of the bearing housing 41, and limit grooves 421 for matching the limit blocks 411 are provided on both sides of the vertical groove 42. This limits the range of movement of the bearing housing 41 within the vertical groove 42, effectively preventing the bearing housing 41 from detaching from the vertical groove 42 due to excessive movement, avoiding equipment failure or safety accidents caused by the tension roller 3 falling off, and ensuring the operational stability and safety of the drive mechanism 4 when adjusting the position of the tension roller 3. When the hydraulic cylinder 43 drives the bearing housing 41 to move up and down along the vertical groove 42, the limit blocks 411 will slide synchronously within the limit grooves 421; when the bearing housing 41 moves close to the top or bottom of the vertical groove 42, the limit blocks 411 will contact the end of the limit grooves 421 and be blocked by the limit grooves 421, thereby limiting the continued movement of the bearing housing 41 and preventing it from detaching from the vertical groove 42.

[0029] Example 2 Unlike Embodiment 1, to facilitate the adaptation of the photoelectric sensor body 5 to printing papers of different widths, a position adjustment mechanism 7 is also included. The position adjustment mechanism 7 includes a slider 71 slidably mounted on a linear guide rail 61, a guide groove 72 formed on the linear guide rail 61, a screw 73 rotatably mounted in the guide groove 72, a nut 74 threaded onto the screw 73 and fixedly connected to the slider 71, and a drive motor 75 fixedly mounted at the front end of the linear guide rail 61. The front end of the screw 73 passes through the linear guide rail 61 and is fixedly connected to the output shaft of the drive motor 75. A support plate 76 is fixedly mounted on the slider 71, and the photoelectric sensor body 5 is fixedly mounted on the support plate 76. Through the design of the position adjustment mechanism 7, the position of the photoelectric sensor body 5 on the linear guide rail 61 can be flexibly adjusted, allowing the photoelectric sensor body 5 to adapt to printing papers of different widths and accurately detect self-adhesive labels on printing papers of different widths. This eliminates the need to replace the dedicated photoelectric sensor or adjust the overall structure of the equipment, significantly improving the practicality and applicability of the photoelectric sensor detection and calibration auxiliary mechanism. The drive motor 75 of the position adjustment mechanism 7 is fixedly mounted on the front end of the linear guide rail 61. When the drive motor 75 starts, its output shaft will drive the screw 73, which passes through the linear guide rail 61 and is rotatably connected to it, to rotate in the guide groove 72. Since the nut 74 is threaded on the screw 73 and fixedly connected to the slider 71 that is slidably mounted on the linear guide rail 61, when the screw 73 rotates, it will drive the nut 74 to move along the axial direction of the screw 73, thereby driving the slider 71 to slide along the linear guide rail 61. Since the photoelectric sensor body 5 is fixedly mounted on the slider 71 through the support plate 76, the movement of the slider 71 will drive the support plate 76 and the photoelectric sensor body 5 to move synchronously, thereby realizing the adjustment of the position of the photoelectric sensor body 5.

[0030] Example 3 Unlike Embodiment 2, to facilitate observation of the position scale of the photoelectric sensor 5 on the linear guide rail 61, a scale 8 is fixedly mounted on the linear guide rail 61, and a pointer 81 adapted to the scale 8 is fixedly connected to the support plate 76. Through the cooperation of the scale 8 and the pointer 81, the specific position scale of the photoelectric sensor 5 on the linear guide rail 61 can be displayed intuitively, allowing operators to quickly and accurately determine whether the position of the photoelectric sensor 5 meets the requirements for detecting the width of the printing paper, reducing the number of trial and error attempts during adjustment, and improving the accuracy and efficiency of the photoelectric sensor 5 position adjustment. The scale 8 is fixed on the linear guide rail 61, and its scale is distributed along the length of the linear guide rail 61. The pointer 81, which is connected to the photoelectric sensor body 5 through the support plate 76, points to the scale 8. When the position adjustment mechanism 7 moves the photoelectric sensor body 5 and the support plate 76 along the linear guide rail 61, the pointer 81 will move synchronously with the support plate 76. The operator can directly read the current position information of the photoelectric sensor body 5 through the scale 8 corresponding to the tip of the pointer 81.

[0031] Example 4 Unlike Embodiment 1, to facilitate observation of whether the position of the photoelectric sensor body 5 deviates from the self-adhesive label, an auxiliary positioning mechanism 9 is provided on the support plate 76. The auxiliary positioning mechanism 9 includes a guide cylinder 91 fixedly inserted into the support plate 76 and a positioning indicator plate 92 inserted into the guide cylinder 91. The design of the auxiliary positioning mechanism 9 provides operators with an intuitive reference, allowing for quick and easy observation of whether the detection position of the photoelectric sensor body 5 deviates from the self-adhesive label on the printed paper. This enables timely detection and correction of positional deviations of the photoelectric sensor body 5, preventing missed or false detections of the self-adhesive label due to photoelectric sensor position deviation, and ensuring the accuracy of photoelectric sensor detection. The guide cylinder 91 of the auxiliary positioning mechanism 9 is fixedly inserted into the support plate 76, and the positioning indicator plate 92 is inserted into the guide cylinder 91. The operator can adjust the extension length of the positioning indicator plate 92 in the guide cylinder 91 so that the end of the positioning indicator plate 92 is aligned with the reference position of the self-adhesive label on the printing paper. When the photoelectric sensor body 5 is working or adjusting its position, the operator can determine whether the photoelectric sensor body 5 is deviating from the self-adhesive label by comparing the relative position of the detection eye of the photoelectric sensor body 5 and the positioning indicator plate 92.

[0032] To facilitate adjustment of the position of the positioning indicator plate 92 on the guide cylinder 91, a fixing screw plate 93 is fixedly connected to the upper end of the guide cylinder 91. A slot 94 is provided on the positioning indicator plate 92, and a knurled bolt 95 for threaded connection with the fixing screw plate 93 is inserted into the slot 94. This allows for convenient adjustment of the position of the positioning indicator plate 92 on the guide cylinder 91, enabling it to be adapted to different positions of self-adhesive labels or different widths of printed paper without disassembling the guide cylinder 91 or the positioning indicator plate 92. The operation is simple and efficient, further enhancing the flexibility and practicality of the auxiliary positioning mechanism 9. The fixing screw plate 93 fixed to the upper end of the guide cylinder 91 corresponds to the strip groove 94 on the positioning indicator plate 92. The knurled bolt 95 passes through the strip groove 94 and is threadedly connected to the fixing screw plate 93. When it is necessary to adjust the position of the positioning indicator plate 92, the operator can loosen the knurled bolt 95 to reduce the pressure between the knurled bolt 95 and the fixing screw plate 93, and the positioning indicator plate 92 can move along the length of the strip groove 94. After the positioning indicator plate 92 moves to the target position, tighten the knurled bolt 95. The thread pressure between the knurled bolt 95 and the fixing screw plate 93 will press the positioning indicator plate 92 into place at the current position, thus completing the position adjustment.

[0033] The wiring diagram of the drive motor 75 in this application is common knowledge in the field, and its working principle is a well-known technology. The appropriate model is selected according to the actual use. Therefore, the control method and wiring layout of the drive motor 75 will not be explained in detail.

[0034] The control method of this application is through a controller. The control circuit of the controller can be implemented by a person skilled in the art through simple programming. The power supply is also common knowledge in the art. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0035] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional and known device such as a computer, and the existing publicly available power connection technology will not be elaborated in the text.

[0036] It should be noted that many of the standard parts used in this application are available on the market, while non-standard parts can be specially customized. The connection method used in this application is also a very common method in the mechanical field, and will not be described in detail here.

[0037] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. An auxiliary mechanism for photoelectric sensor detection and calibration applied to a die-cutting machine, characterized in that: Includes a frame (1), with a guide roller (2) at the right end and a tension roller (3) at the left end, and a drive mechanism (4) for driving the tension roller (3) to move up and down. It also includes an electro-eye body (5) and an auxiliary calibration mechanism (6) for keeping the detection eye of the electro-eye body (5) perpendicular to the printing paper. The auxiliary calibration mechanism (6) includes a linear guide rail (61) connected to the photoelectric sensor body (5), a support cylinder (62) fixed to both ends of the linear guide rail (61), a first rotating shaft (63) fixed to both ends of the tension roller (3) and rotatably connected to the left end of the support cylinder (62), a support rod (64) slidably inserted into the right end of the support cylinder (62), and a second rotating shaft (65) fixed to both ends of the guide roller (2) and rotatably connected to the right end of the support rod (64). The straight line containing the support cylinder (62) and the support rod (64) is perpendicular to the axis of the tension roller (3) and the guide roller (2).

2. The photoelectric sensor calibration auxiliary mechanism for a die-cutting machine according to claim 1, characterized in that: The first rotating shaft (63) is connected to the support cylinder (62) via a bearing, and the second rotating shaft (65) is connected to the support rod (64) via a bearing.

3. The photoelectric sensor calibration auxiliary mechanism for a die-cutting machine according to claim 1, characterized in that: The upper and lower ends of the support rod (64) are provided with multiple balls (641) that rotate along its length. The inner wall of the support cylinder (62) is provided with an arc-shaped guide groove (621) for matching the balls (641).

4. The photoelectric sensor calibration auxiliary mechanism for a die-cutting machine according to claim 1, characterized in that: The drive mechanism (4) includes bearing seats (41) installed at both ends of the tension roller (3), vertical grooves (42) opened on the frame (1) for the bearing seats (41) to move up and down, and hydraulic cylinders (43) fixed on the frame (1). The output end of the hydraulic cylinder (43) passes through the frame (1) and is fixedly connected to the bearing seats (41).

5. The photoelectric sensor calibration auxiliary mechanism for a die-cutting machine according to claim 4, characterized in that: The left and right ends of the bearing seat (41) are fixed with limit blocks (411), and the two sides of the vertical groove (42) are provided with limit grooves (421) for matching the limit blocks (411).

6. The photoelectric sensor calibration auxiliary mechanism for a die-cutting machine according to any one of claims 1-5, characterized in that: It also includes a position adjustment mechanism (7), which includes a slider (71) slidably sleeved on the linear guide rail (61), a guide groove (72) opened on the linear guide rail (61), a screw (73) rotatably installed in the guide groove (72), a nut (74) threaded on the screw (73) and fixedly connected to the slider (71), and a drive motor (75) fixedly mounted on the front end of the linear guide rail (61). The front end of the screw (73) passes through the linear guide rail (61) and is fixedly connected to the output shaft of the drive motor (75). A support plate (76) is fixedly mounted on the slider (71), and the photoelectric sensor body (5) is fixedly mounted on the support plate (76).

7. The photoelectric sensor calibration auxiliary mechanism for a die-cutting machine according to claim 6, characterized in that: A scale (8) is fixed on the linear guide (61), and a pointer (81) for matching the scale (8) is fixed on the support plate (76).

8. The photoelectric sensor calibration auxiliary mechanism for a die-cutting machine according to claim 6, characterized in that: An auxiliary positioning mechanism (9) is provided on the support plate (76). The auxiliary positioning mechanism (9) includes a guide cylinder (91) fixedly inserted into the support plate (76) and a positioning indicator plate (92) inserted into the guide cylinder (91).

9. The photoelectric sensor calibration auxiliary mechanism for a die-cutting machine according to claim 8, characterized in that: The upper end of the guide cylinder (91) is fixedly connected to a fixing screw plate (93), and a strip groove (94) is provided on the positioning indicator plate (92). A knurled bolt (95) for threaded connection with the fixing screw plate (93) is inserted into the strip groove (94).

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