Deviation rectifying feeder

Abstract

The deviation rectifying feeder comprises a bottom plate, a rack, a deviation rectifying mechanism, a feeding air box, a limiting mechanism and a material supporting mechanism, and the rack is rotationally connected to the bottom plate through the deviation rectifying mechanism and drives the feeding air box, the limiting mechanism, the material supporting mechanism and conveyed paper to rotate integrally so as to correct the conveying posture of the paper. According to the deviation rectifying feeder, the paper conveying posture is recognized in real time through the sensing assembly, the driving assembly synchronously and reversely drives the rack to rotate integrally, synchronous deviation rectifying of related parts such as the feeding air box and the limiting mechanism and paper is achieved in combination with the rotating assembly arranged in a concentric arc mode, and deviation rectifying is more stable and accurate. The limiting mechanism can achieve left-right limiting and conveying quantity control of paper at the same time, the deviation hidden danger caused by conveying of multiple pieces of paper is reduced, and the conveying regularity is improved. The whole structural design enables the machine frame to rotate smoothly and respond in time, paper deviation is effectively corrected, it is guaranteed that the conveying posture is accurate, stable guarantee is provided for subsequent machining procedures, and the operation reliability and conveying quality of equipment are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of feeding machines, in particular to a deviation rectifying feeding machine. BACKGROUND

[0002] In the paper processing, printing and other related production fields, the feeding machine is the key equipment to realize the continuous conveying of paper, and its conveying precision directly affects the quality of the subsequent processing procedures. The feeding machine in the prior art usually sets a feeding mechanism, a limiting structure and a material supporting structure to realize the stacking support, the conveying of each paper and the preliminary limiting of the paper. However, in the actual use process, due to the difference in the flatness of the paper itself, the initial position deviation when stacking, or the slight vibration in the running process of the feeding mechanism, the paper is prone to left and right deviation in the conveying process, resulting in inaccurate paper conveying pose.

[0003] In order to solve the deviation problem, part of the feeding equipment sets a deviation rectifying structure, but the existing deviation rectifying structure is mostly for local adjustment of the paper itself, rather than driving the whole feeding related components to rectify deviation synchronously. This local adjustment method is easy to cause uneven stress of the paper, and not only is difficult to achieve ideal deviation rectifying effect, but also may cause paper creasing and damage.

[0004] It can be seen that the prior art still needs to be improved and improved. SUMMARY

[0005] In view of the above shortcomings of the prior art, the purpose of the present application is to provide a deviation rectifying feeding machine, which aims to solve the technical problem of poor deviation rectifying effect of the deviation rectifying structure of the paper feeding machine in the prior art.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: A deviation rectifying feeding machine, comprising a bottom plate, a rack is arranged on the bottom plate through a deviation rectifying mechanism, a feeding air bellow, a limiting mechanism and a material supporting mechanism are installed on the rack; The feeding air bellow is arranged at the front end of the rack along the paper feeding direction, and is used to convey the stacked paper one by one forward; The material supporting mechanism is arranged at the rear end of the rack along the paper feeding direction, and is used to support the rear end of the stacked paper; The limiting mechanism is located above the front side of the feeding air bellow along the paper feeding direction, and is used to limit the left and right of the paper conveyed on the feeding air bellow, and to limit the number of the paper conveyed each time; The deviation rectifying mechanism comprises two driving assemblies, four rotating assemblies and a sensing assembly. The two driving assemblies are respectively installed on the two sides of the bottom plate along the paper feeding direction and are respectively connected to drive the two sides of the frame along the paper feeding direction. The four rotating assemblies are respectively located at the four corners of the bottom plate. The four corners of the frame are movably connected to the four corners of the bottom plate through the rotating assemblies and can rotate relative to the bottom plate. The four rotating assemblies are located on the same arc concentric with the frame when the frame rotates. The sensing assembly is installed on the limiting mechanism and is used to identify whether the position of the paper being transported on the feeding air box deviates. If the sensing assembly identifies that the position of the paper being transported on the feeding air box deviates, the two driving assemblies simultaneously start reverse movement to drive the frame to rotate for deviation compensation. The frame drives the feeding air box, the limiting mechanism, the material supporting mechanism and the paper being transported to rotate as a whole under the cooperation of the rotating assemblies to correct the transport position of the paper.

[0007] The deviation rectifying feeder, wherein the driving assembly comprises a first motor, a first screw rod and a first nut. The first motor is fixedly installed on one side of the bottom plate along the paper feeding direction and is connected to drive one end of the first screw rod through a shaft coupling. The first nut is fixedly installed on one side of the frame along the paper feeding direction and is sleeved on the other end of the first screw rod. The length direction of the first screw rod is the same as the paper feeding direction.

[0008] The deviation rectifying feeder, wherein the rotating assembly comprises a support shaft, a bearing, a fixed gland and a rotating groove. One end of the support shaft is fixedly connected to the bottom of the frame, and the other end is fixedly connected to the fixed gland. The bearing is sleeved on the support shaft. The fixed gland is used to limit the bearing on the support shaft. The rotating groove is fixedly installed on the bottom plate. The support shaft is movably arranged in the groove of the rotating groove through the bearing.

[0009] The deviation rectifying feeder, wherein the frame comprises a first guide rail and a second guide rail. The length direction of the first guide rail is perpendicular to the length direction of the second guide rail and is perpendicular to the paper feeding direction. The first guide rail is located above the feeding air box to install the limiting mechanism. The second guide rail is arranged behind the feeding air box along the feeding direction to install the material supporting mechanism.

[0010] The deviation rectifying feeder, wherein the limiting mechanism comprises a front baffle, a left baffle, a right baffle, a sliding module, a cam module and a bidirectional screw module, the sliding module is slidably connected to the first guide rail, the left baffle, the front baffle and the right baffle are sequentially slidably connected to the first guide rail through the sliding module, the cam module is used for driving the front baffle to move up and down on the rack, and the bidirectional screw module is used for driving the left baffle and the right baffle to move close to or away from each other along the first guide rail.

[0011] The deviation rectifying feeder, wherein the sliding module comprises a first connecting plate, a second connecting plate, a third connecting plate and at least three sliding blocks, the first connecting plate is fixedly connected with the front baffle and slidably connected to the first guide rail through the at least one sliding block, the second connecting plate is connected to the left baffle through the flattening module and slidably connected to the first guide rail through the at least one sliding block, and the third connecting plate is fixedly connected with the right baffle and slidably connected to the first guide rail through the at least one sliding block. The inductive assembly comprises two photoelectric inductors, the two photoelectric inductors are respectively arranged at lower ends of the second connecting plate and the third connecting plate, and the inductive ends are all arranged downward to inductively detect whether the position of the paper being conveyed is deviated.

[0012] The deviation rectifying feeder, wherein the flattening module comprises a cylinder and a fourth connecting plate, the cylinder is fixedly arranged on the second connecting plate and drives the fourth connecting plate, the fourth connecting plate is fixedly connected to the left baffle, and the cylinder drives the left baffle to reciprocate along the length direction of the first guide rail to flatten the paper stacked on the feeding air box in the left-right direction.

[0013] The deviation rectifying feeder, wherein the material supporting mechanism comprises a support, a lifting module and a material supporting plate, the support is provided with sliding blocks slidably connected to the second guide rail at two ends, the material supporting plate is arranged on the support through the lifting module, a material supporting portion protruding forward along the paper conveying direction is arranged on the side of the material supporting plate close to the feeding air box to support the paper to be conveyed, and the lifting module is used for driving the material supporting plate to move up and down to adjust the height of the paper to be conveyed.

[0014] The deviation rectifying feeder, wherein the front side plate of the material supporting plate provided with the material supporting portion is provided with at least two first through holes, an inner portion of the material supporting plate close to the material supporting portion is provided with a rotating shaft, at least two extension plates are arranged on the rotating shaft, the extension plates are arranged in one-to-one correspondence with the first through holes and can rotate around the axis of the rotating shaft to extend out of the first through holes to abut against the tail end of the paper to be conveyed or rotate around the axis of the rotating shaft to be accommodated in the inner portion of the material supporting plate through the first through holes.

[0015] The deviation rectifying feeder, wherein the material supporting mechanism further comprises a material separating module, the material separating module comprises a material separating plate, a connecting rod, a pushing rod, an adjusting screw rod, an adjusting nut and an adjusting handle, the material separating plate is fixedly connected to the pushing rod through the connecting rod and is located above the material supporting part, the material separating plate is used for separating the stacked paper, the connecting rod is arranged through the second through hole of the material supporting plate, the pushing rod is movably installed on the inner side of the material supporting plate and is fixedly connected with the adjusting nut, the adjusting nut is sleeved on the adjusting screw rod, the adjusting handle is fixedly connected to the adjusting screw rod, and the length direction of the adjusting screw rod is consistent with the paper feeding direction; by twisting the adjusting handle, the material separating plate can be driven to move back and forth along the paper feeding direction through the transmission of the adjusting screw rod and the adjusting nut in cooperation, so that the position of the material separating plate is adjusted.

[0016] Beneficial effects: The deviation rectifying feeder provided by the application comprises a bottom plate, a rack, a deviation rectifying mechanism, a feeding air bellow, a limiting mechanism and a material supporting mechanism, the rack is rotationally connected to the bottom plate through the deviation rectifying mechanism, and drives the feeding air bellow, the limiting mechanism, the material supporting mechanism and the paper being transported to rotate as a whole, so as to correct the transport posture of the paper. The deviation rectifying feeder can identify the transport posture of the paper in real time through the sensing assembly, synchronously drive the rack as a whole to rotate in the reverse direction through the driving assembly, and realize the synchronous deviation rectification of the feeding air bellow, the limiting mechanism and other related components and the paper through the rotation assembly arranged in concentric arcs, so as to avoid uneven stress and damage of the paper caused by local adjustment and make the deviation rectification more stable and accurate. The limiting mechanism can simultaneously realize the left-right limiting and the quantity control of the paper, reduce the deviation hidden danger caused by multiple paper transport, and improve the transport regularity. The overall structural design makes the rack rotate smoothly and respond timely, effectively corrects the deviation of the paper, guarantees the accuracy of the transport posture, provides stable guarantee for the subsequent processing procedure, and significantly improves the operation reliability and the transport quality of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The three-dimensional structural schematic diagram of the deviation rectifying feeder provided by the application is shown in the figure; Figure 2 The top view structural schematic diagram of the deviation rectifying mechanism provided by the application is shown in the figure; Figure 3 The exploded structural schematic diagram of the rotation assembly provided by the application is shown in the figure; Figure 4 The assembly structural schematic diagram of the material supporting mechanism provided by the application is shown in the figure; Figure 5 The exploded structural schematic diagram of the material supporting mechanism provided by the application is shown in the figure; Figure 6 The three-dimensional structural schematic diagram of the sliding module of the limiting mechanism provided by the application is shown in the figure; Figure 7 The three-dimensional structural schematic diagram of the flattening module of the limiting mechanism provided by the application is shown in the figure; Figure 8The left view structural schematic diagram of the deviation rectifying feeder provided by the application under the application state.

[0018] Reference signs: 1 - base plate 2 - deviation rectifying mechanism 3 - rack 4 - feeding air bellow 5 - limiting mechanism 6 - material supporting mechanism 21 - driving assembly 22 - rotating assembly 23 - sensing assembly 31 - first guide rail 32 - second guide rail 51 - front baffle 52 - left baffle 53 - right baffle 54 - sliding module 55 - cam module 56 - bidirectional screw module 57 - flattening module 61 - support 62 - lifting module 63 - material supporting plate 64 - material distributing module 211 - first motor 212 - first screw 213 - first nut 221 - supporting shaft 222 - bearing 223 - fixed cover 224 - rotating groove 225 - cover 231 - photoelectric sensor 232 - mounting frame 511 - mounting groove 512 - waist hole 541 - first connecting plate 542 - second connecting plate 543 - third connecting plate 544 - sliding block 551 - stepping motor 552 - first transmission shaft 553 - eccentric wheel 571 - air cylinder 572 - fourth connecting plate 611 - third motor 612 - third transmission shaft 613 - second gear 614 - second rack 621 - second motor 622 - first gear 623 - first rack 624 - second transmission shaft 631 - material supporting part 632 - first through hole 633 - rotating shaft 634 - extended material plate 635 - second through hole 641 - material distributing plate 642 - connecting rod 643 - pushing plate 644 - adjusting screw 645 - adjusting nut 646 - adjusting handle. DETAILED DESCRIPTION

[0019] The application provides a deviation rectifying feeder. In order to make the purpose, technical scheme and effects of the application more clear and explicit, the application is further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and are not used to limit the application.

[0020] In the description of the present application, it needs to be understood that the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, and a particular orientation configuration and operation, therefore, cannot be understood as a limitation on the present application. In addition, "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0021] Please refer to Figures 1 to 8 As shown in the drawings, the present application provides a deviation correction feeder, which comprises a base plate 1, a rack 3 is arranged on the base plate 1 through a deviation correction mechanism 2, a feeding air box 4, a limiting mechanism 5 and a material supporting mechanism 6 are installed on the rack 3; in this embodiment, a controller is also included, the controller selects a PLC chip, and the controller controls the deviation correction mechanism 2, the feeding air box 4, the limiting mechanism 5 and the material supporting mechanism 6 respectively.

[0022] The feeding air box 4 is arranged at the front end of the rack 3 along the paper feeding direction, and is used to transport the stacked paper one by one to the front; in this embodiment, the structure of the feeding air box 4 is the conventional structure in the prior art, and the bottom thereof is connected with an external vacuum extraction device through an air pipe, so that a negative pressure environment is formed on the top surface of the feeding air box 4, thereby adsorbing the paper being transported, avoiding the paper from curling or shifting.

[0023] The material supporting mechanism 6 is arranged at the rear end of the rack 3 along the paper feeding direction, and is used to support the rear end of the stacked paper; in this embodiment, the material supporting mechanism 6 supports the rear end of the paper to be transported, so that the stacked paper is placed stably on the feeding air box 4, which can reduce the length requirement of the feeding air box 4 along the paper feeding direction, thereby reducing the range of the negative pressure environment, and further reducing the energy consumption of the vacuum extraction device.

[0024] The limiting mechanism 5 is located above the front side of the feeding air box 4 along the paper feeding direction, and is used to limit the left and right of the paper being transported on the feeding air box 4, and to limit the number of the paper transported each time; in this embodiment, the limiting mechanism 5 limits the left and right and the front side of the paper stacked on the feeding air box 4, and the rear side of the paper is limited by the material supporting mechanism 6, and by setting the paper passing gap between the limiting mechanism 5 and the feeding air box 4, it is ensured that the feeding air box 4 transports only one paper each time.

[0025] Please refer to Figures 1 to 2As shown, the deviation rectifying mechanism 2 includes two driving assemblies 21, four rotating assemblies 22 and a sensing assembly 23. The two driving assemblies 21 are respectively installed on the two sides of the bottom plate 1 along the paper feeding direction and are respectively drivingly connected to the two sides of the rack 3 along the paper feeding direction. The four rotating assemblies 22 are respectively located at the four corners of the bottom plate 1. The four corners of the rack 3 are movably connected to the four corners of the bottom plate 1 through the rotating assemblies 22 and can rotate relative to the bottom plate 1. The four rotating assemblies 22 are located on the same circular arc concentric with the rack 3 when the rack 3 rotates. The sensing assembly 23 is installed on the limiting mechanism 5 and is used to identify whether the position of the paper being transported on the feeding air box 4 deviates. If the sensing assembly 23 identifies that the position of the paper being transported on the feeding air box 4 deviates, the two driving assemblies 21 simultaneously start reverse movement to drive the rack 3 to rotate for deviation compensation. The rack 3 drives the feeding air box 4, the limiting mechanism 5, the material supporting mechanism 6 and the paper being transported to rotate as a whole under the cooperation of the rotating assemblies 22 to correct the transport position of the paper. In this embodiment, the rotation center of the rack 3 is the center of the circular arc where the four rotating assemblies 22 are located. The center is located at the intersection of the central axis along the paper feeding direction and the central axis perpendicular to the paper feeding direction of the bottom plate 1. A central shaft is connected to the center through a bearing 222. The upper end of the central shaft is fixedly connected to the bottom of the rack 3 through a screw. The sensing assembly 23 adopts an optical sensor. The sensing end thereof is downwardly arranged to identify the edge of the paper being transported on the air box 4 and to detect the position deviation of the edge of the paper in real time. The "mutual reverse driving" of the two driving assemblies 21 is as follows: when the paper deviates to the left, the driving assembly 21 located on the left side of the bottom plate 1 drives the left side of the rack 3 to move forward, and the driving assembly 21 located on the right side drives the right side of the rack 3 to move backward. When the paper deviates to the right, the two driving assemblies 21 act in opposite directions. The overall deviation compensation is achieved through the rotation of the rack 3 around the center to ensure that the paper transport position correction is synchronous and smooth.

[0026] The deviation rectifying feeder can identify the paper transport position in real time through the sensing assembly 23, synchronously drive the rack 3 to rotate in reverse through the driving assemblies 21, realize the synchronous deviation rectification of the feeding air box 4, the limiting mechanism 5 and other related components and the paper in combination with the rotating assemblies 22 arranged on the concentric circular arc, avoid the uneven stress and damage of the paper caused by local adjustment, and rectify the deviation more smoothly and accurately. The limiting mechanism 5 can simultaneously realize the left and right limiting of the paper and the control of the number of papers transported, reduce the deviation hidden danger caused by the transportation of multiple papers and improve the transportation regularity. The overall structural design makes the rotation of the rack 3 smooth, the response timely, effectively rectifies the deviation of the paper, ensures the accuracy of the transport position and provides stable guarantee for the subsequent processing procedures, and significantly improves the operation reliability and the transportation quality of the equipment.

[0027] Please refer to Figure 2As shown, the drive assembly 21 includes a first motor 211, a first lead screw 212, and a first nut 213. The first motor 211 is fixedly installed on one side of the base plate 1 along the paper feeding direction and is driven to one end of the first lead screw 212 via a coupling. The first nut 213 is fixedly installed on one side of the frame 3 along the paper feeding direction and is sleeved on the other end of the first lead screw 212. The length direction of the first lead screw 212 is the same as the paper feeding direction. In this embodiment, the length direction of the first lead screw 212 is parallel to the paper feeding direction, and its middle part, slightly closer to the first motor 211, is rotatably supported on the base plate 1 by a bearing 222 seat. The first nut 213 is fixed to a mounting seat on the side of the frame 3 by bolts, and the first nut 213 and the first lead screw 212 are engaged with a trapezoidal thread to improve transmission stability. The coupling is a flexible coupling to compensate for the installation coaxiality deviation between the output shaft of the first motor 211 and the first lead screw 212. The first motor 211 is a servo motor, which can accurately control the rotation angle and speed of the lead screw, thereby realizing the precise adjustment of the rotation of the frame 3.

[0028] Please see Figure 3 As shown, the rotating assembly 22 includes a support shaft 221, a bearing 222, a fixing cap 223, and a rotating groove 224. One end of the support shaft 221 is fixedly connected to the bottom of the frame 3, and the other end is fixedly connected to the fixing cap 223. The bearing 222 is sleeved on the support shaft 221. The fixing cap 223 is used to limit the bearing 222 on the support shaft 221. The rotating groove 224 is fixedly installed on the base plate 1. The support shaft 221 is rotatably accommodated in the groove of the rotating groove 224 through the bearing 222. In this embodiment, the groove of the rotating groove 224 is an arc-shaped groove, and its curvature is perfectly matched with the arc of the four rotating assemblies 22. The width of the arc-shaped groove is slightly larger than the outer diameter of the bearing 222 to ensure that the bearing 222 can slide smoothly along the groove. A stop is fixedly connected to the opening of the arc-shaped groove by bolts. The stop is used to abut against the upper end of the bearing 222 to limit the bearing 222 and the support shaft 221 axially. The support shaft 221 adopts a stepped shaft structure. Its upper end is fixedly connected to the bottom of the mounting seat on the side of the frame 3 by bolts, and its lower end is fixed to the fixing cover 223 by bolts. The bearing 222 is a deep groove ball bearing 222. The fixing cover 223 is a stepped cylinder with a maximum diameter larger than that of the support shaft 221. It is fixedly connected to the bottom end of the support shaft 221 by bolts to limit the axial movement of the bearing 222 and prevent the bearing 222 from moving axially along the support shaft 221.

[0029] To improve the smoothness of rotation of the rotating assembly 22, a cover 225 can be provided at both ends of the arc groove of the rotating groove 224. The cover 225 and the rotating groove 224 are sealed to form a movable cavity. Lubricating oil is injected into the movable cavity so that the lower ends of the bearing 222 and the support shaft 221 are immersed in the lubricating oil, thereby improving the wear resistance of the bearing 222 and the support shaft 221.

[0030] Please see Figures 4 to 7 As shown, the frame 3 includes a first guide rail 31 and a second guide rail 32. The length direction of the first guide rail 31 is perpendicular to the length direction of the second guide rail 32 and also perpendicular to the paper feeding direction. The first guide rail 31 is located above the feeding air box 4 for mounting the limiting mechanism 5, and the second guide rail 32 is located behind the feeding air box 4 along the feeding direction for mounting the material support mechanism 6. In this embodiment, both the first guide rail 31 and the second guide rail 32 are linear slide rails made of aluminum alloy. The first guide rail 31 is horizontally fixed to the crossbeam at the top of the frame 3 by bolts, and its length direction is perpendicular to the paper feeding direction. There are two first guide rails 31, which are arranged parallel to each other vertically. There are two second guide rails 32, which are arranged parallel to each other in the middle of the frame 3, with their length direction consistent with the paper feeding direction. The distance between the two second guide rails 32 is adapted to the width of the support bracket 61 of the material support mechanism 6. The cross-section of the guide rail is "T" shaped, and its sliding surface is provided with grease grooves to reduce the friction of the slider 544 during sliding.

[0031] In some other embodiments, the first guide rail 31 and the second guide rail 32 may be replaced by optical rods, and the slider 544 may be selected with a structure adapted to the optical rods.

[0032] Please see Figures 6 to 7 As shown, the limiting mechanism 5 includes a front baffle 51, a left baffle 52, a right baffle 53, a sliding module 54, a cam module 55, and a bidirectional screw module 56. The sliding module 54 is slidably connected to the first guide rail 31. The left baffle 52, the front baffle 51, and the right baffle 53 are sequentially slidably connected to the first guide rail 31 through the sliding module 54. The cam module 55 is used to drive the front baffle 51 to move up and down on the frame 3. The bidirectional screw module 56 is used to drive the left baffle 52 and the right baffle 53 to slide closer to or further away from each other along the first guide rail 31. The left baffle 52 is used to limit the left side of the paper on the feeding air box 4. The right baffle 53 is used to limit the right side of the paper on the feeding air box 4. The front baffle 51 is used to limit the front side of the paper on the feeding air box 4, and its lower end forms a gap with the upper surface of the feeding air box 4 that allows only one sheet of paper to pass through, so that the feeding air box 4 can only convey one sheet of paper at a time.

[0033] In this embodiment, the lead screw module that drives the left and right baffles 53 is a bidirectional ball screw module with opposite thread directions at both ends of the lead screw. The left baffle 52 and the right baffle 53 are respectively connected to the two ends of the lead screw through nut seats. When the lead screw rotates, it drives the two baffles to move closer or further away synchronously to adapt to different widths of paper. The cam module 55 driving the front baffle 51 includes a stepper motor 551, a first drive shaft 552, and an eccentric wheel 553. The stepper motor 551 is fixed to the side of the frame 3 by a motor mount and is driven by the first drive shaft 552 through a pulley transmission structure. The axial direction of the first drive shaft 552 is parallel to the length direction of the first guide rail 31. The eccentric wheel 553 is fixedly sleeved on the outside of the first drive shaft 552. An adjusting groove 511 is fixedly connected to the upper end of the front baffle 51 by screws. A deep groove ball bearing is provided in the groove of the adjusting groove 511. The deep groove ball bearing is sleeved on the outside of the eccentric wheel 553 so that the eccentric wheel 553 can rotate in the adjusting groove. The front baffle 51 is provided with a waist hole 512. The length direction of the waist hole 512 is the same as the length direction of the front baffle 51, that is, it is set vertically. The front baffle 51 and the sliding module 54 are movably connected through the waist hole 512. Stepper motor 551 drives the first transmission shaft 552 to rotate, which in turn drives the eccentric wheel 553 to rotate, thereby causing the front baffle 51 to move up and down to control the gap between the lower end of the front baffle 51 and the upper surface of the feeding air box 4, ensuring that only a single sheet of paper is allowed to pass through. The gap can be adaptively adjusted according to the paper thickness.

[0034] Please see Figure 6As shown, the sliding module 54 includes a first connecting plate 541, a second connecting plate 542, a third connecting plate 543, and at least three sliders 544. The first connecting plate 541 is fixedly connected to the front baffle 51 and slidably connected to the first guide rail 31 via at least one slider 544. The second connecting plate 542 is connected to the left baffle 52 via a flattening module 57 and slidably connected to the first guide rail 31 via at least one slider 544. The third connecting plate 543 is fixedly connected to the right baffle 53 and slidably connected to the first guide rail 31 via at least one slider 544. In this embodiment, the three baffles are arranged along the first guide rail 31 in the order of left baffle 52, front baffle 51, and right baffle 53. The sliders 544 are all T-shaped sliders 544 adapted to the first guide rail 31. Each baffle is equipped with two sliders 544 to slidably connect to two first guide rails 31 respectively, thereby improving the sliding stability of the baffles. The first connecting plate 541, the second connecting plate 542, and the third connecting plate 543 are all straight plates. The first connecting plate 541 is fixed to the slider 544 by screws, and a limit bolt is provided at the waist hole 512 of the corresponding front baffle 51. The head of the limit bolt is movably accommodated in the waist hole 512 to realize the movable connection between the first connecting plate 541 and the front baffle 51. The front side of the second connecting plate 542 along the paper feeding direction is fixed to the slider 544 by screws, and its upper end is connected to the flattening module 57. The third connecting plate 543 is fixed to the right baffle 53 by screws, and is also connected to the slider 544 by screws to ensure the stability of each baffle when sliding.

[0035] Please see Figure 6As shown, the sensing component 23 includes two photoelectric sensors 231, which are respectively mounted on the lower ends of the second connecting plate 542 and the third connecting plate 543, with their sensing ends facing downwards, to detect whether the position of the paper being conveyed has shifted. In this embodiment, the two photoelectric sensors 231 are high-precision diffuse reflection photoelectric sensors, which have high detection accuracy and fast response speed, and are suitable for the non-contact detection requirements of paper conveying scenarios. The lower ends of the second connecting plate 542 and the third connecting plate 543 are both fixedly connected to the mounting bracket 232 by screws, and the photoelectric sensors 231 are fixedly connected to the mounting bracket 232 by screws. The two photoelectric sensors 231 are connected to the main control controller of the equipment through shielded signal cables. The cables are laid along the side of the connecting plates and fixed, and the outer flexible drag chain extends and retracts synchronously with the sliding of the left baffle 52 and the right baffle 53. The two ends of the drag chain are fixed to the connecting plate and the frame 3 respectively to prevent the cables from being pulled, worn, or tangled. The left photoelectric sensor 231 detects the left half of the front edge of the paper, and the right photoelectric sensor 231 detects the right half of the front edge of the paper. The feeding air box 4 operates in high-precision synchronous mode with the external encoder. When the paper is conveyed on the feeding air box 4, the photoelectric sensors 231 on both sides latch the encoder position at high speed as the position where the paper should be, and at the same time detect the actual position of the paper. By comparing the "position where the paper should be" with the "actual position of the paper", the offset of the paper from the preset reference value is obtained.

[0036] Please see Figure 7 As shown, the flattening module 57 includes a cylinder 571 and a fourth connecting plate 572. The cylinder 571 is fixedly mounted on the second connecting plate 542 and drives the fourth connecting plate 572. The fourth connecting plate 572 is fixedly connected to the left baffle 52. The cylinder 571 drives the left baffle 52 to reciprocate along the length of the first guide rail 31 to flatten the paper stacked on the feeding air box 4 in the left and right directions. In this embodiment, the cylinder 571 is a miniature cylinder, whose cylinder body is fixed to the front side of the second connecting plate 542 along the paper feeding direction by bolts. The extension direction of the piston rod is consistent with the length direction of the first guide rail 31 (i.e., the left and right direction). The fourth connecting plate 572 is a rectangular steel plate, one side of which is threaded to the piston rod, and the other side is fixed to the left baffle 52 by screws. The miniature cylinder is controlled by a solenoid valve to reciprocate, driving the left baffle 52 to swing rapidly and slightly in the left and right directions to flatten the edges of the stacked paper and avoid conveying deviation caused by uneven paper stacking.

[0037] Please see Figures 4 to 5 , Figure 8As shown, the material support mechanism 6 includes a bracket 61, a lifting module 62, and a material support plate 63. The bracket 61 has sliders 544 at both ends that are slidably connected to the second guide rail 32. The material support plate 63 is mounted on the bracket 61 via the lifting module 62. The side of the material support plate 63 closest to the feeding air box 4 has a forward-protruding material support portion 631 to support the paper to be conveyed. The lifting module 62 drives the material support plate 63 to move up and down to adjust the height of the paper to be conveyed. In this embodiment, the material support portion 631 protrudes forward along the paper feeding direction, and its supporting surface is a horizontal plane, flush with the upper surface of the feeding air box 4. The lifting module 62 adopts a motor-gear transmission structure. Its base is fixed to the top of the bracket 61 and includes a second motor 621, a first rack 622, and a first gear 623. The first rack 622 is bolted to the bottom of the material support plate 63, and its length direction is consistent with the vertical direction. The first rack 622 and the first gear 623 mesh and transmit power. The second motor 621 drives the first gear 623 to rotate through the second transmission shaft 624, realizing the smooth lifting and lowering of the material support plate 63, thereby adjusting the height of the stacked paper and ensuring that the topmost paper is always adapted to the conveying surface of the feeding air box 4. The sliders 544 at both ends of the bracket 61 are adapted to the second guide rail 32 and can adjust the front and rear positions of the material support mechanism 6 along the second guide rail 32. A third motor 611 is installed at the bottom of the bracket 61. The third motor 611 is driven by a second gear 613 through a third transmission shaft 612. The frame 3 is provided with a second rack 614 parallel to the second guide rail 32. The second rack 614 meshes with the second gear 613 to drive the material support mechanism 6 to slide along the second guide rail 32.

[0038] Please see Figures 4 to 5 , Figure 8As shown, the front side plate of the material support plate 63, which is provided with the material support part 631, has at least two first through holes 632. A rotating shaft 633 is provided inside the material support plate 63 near the material support part 631. At least two extension plates 634 are provided on the rotating shaft 633. The extension plates 634 are arranged one-to-one with the first through holes 632 and can rotate around the axis of the rotating shaft 633 to extend out of the first through holes 632 to hold the tail end of the paper to be conveyed, or rotate around the axis of the rotating shaft 633 and pass through the first through holes 632 to be stored inside the material support plate 63. In this embodiment, the top paper surface of the extension plate 634 is perpendicular to the holding surface of the material support part 631. Both ends of the rotating shaft 633 are supported on the inner wall of the material support plate 63 by bearings 222. One end of the rotating shaft 633 extends out of the outer side of the material support plate 63 and is driven and connected to a handle or a micro stepper motor. When it is necessary to change to a smaller paper size, the tail end of the paper to be conveyed exceeds the travel of the support plate 634, causing the support part 631 to be unable to contact the tail end of the paper to be conveyed. At this time, the rotating shaft 633 can be driven to rotate by hand or stepper motor 551, so that the extension plate 634 rotates around the rotating shaft 633 out of the first through hole 632 and then presses against the tail end of the paper to be conveyed. When not in use, the rotating shaft 633 is rotated in the opposite direction to store the extension plate 634 inside the support plate 63, without affecting the normal operation of the support part 631.

[0039] Please see Figures 4 to 5 , Figure 8As shown, the feeding mechanism 6 also includes a separating module 64, which includes a separating plate 641, a connecting rod 642, a pushing rod 643, an adjusting screw 644, an adjusting nut 645, and an adjusting handle 646. The separating plate 641 is fixedly connected to the pushing rod 643 via the connecting rod 642 and is located above the feeding part 631. The separating plate 641 is used to separate stacked papers. The connecting rod 642 passes through the second through hole 635 opened in the feeding plate 63. The pushing rod 643 is movably installed on the inner side of the feeding plate 63 and fixedly connected to the adjusting nut 645. The adjusting nut 645 is sleeved on the adjusting screw 644. The adjusting handle 646 is fixedly connected to the adjusting screw 644. The length direction of the adjusting screw 644 is consistent with the paper feeding direction. By turning the adjusting handle 646, the adjusting screw 644 and the adjusting nut 645 can be used to drive the separating plate 641 to move back and forth along the paper feeding direction to adjust the position of the separating plate 641. In this embodiment, the adjusting screw 644 is arranged horizontally along the paper feeding direction, and its two ends are supported on the inner side of the material support plate 63 by bearing seats 222. The adjusting handle 646 is a quincunx handle and is fixed to the exposed end of the adjusting screw 644. The separating plate 641 is a bent thin steel plate, forming an arrow-shaped surface that protrudes forward from the front side of the material support plate 63 along the paper feeding direction. It is used to separate the upper part of the stacked paper and prevent multiple sheets from sticking together due to excessive paper accumulation on the material support 631. The connecting rod 642 is a square rod, which is clearance-fitted with the second through hole 635 to ensure smooth back-and-forth movement of the separating plate 641. By turning the adjusting handle 646, the adjusting screw 644 is rotated, causing the adjusting nut 645 to drive the push rod 643, the connecting rod 642, and the separating plate 641 to move synchronously, thereby accurately adjusting the back-and-forth position of the separating plate 641.

[0040] To improve the moving stability of the material distribution plate 641, two adjusting nuts 645 are fixedly connected to the push rod 643 along its length. The two adjusting nuts 645 are respectively screwed to two adjusting screws 644. The two adjusting screws 644 are respectively fixedly connected to a synchronous pulley. The two synchronous pulleys are connected by a synchronous chain.

[0041] The online correction method for this correction feeder includes the following steps: S01. Input the correct orientation data of the paper into the controller as the reference value, calibrate each mechanism, place the paper to be conveyed onto the feeding air box 4 and the material support mechanism 6, and start the feeder. S02, the feeding air box 4 conveys the stacked paper on its top surface one sheet at a time, and the sensing component 23 detects the paper being conveyed in real time and transmits the detection data to the controller. S03. The controller analyzes and compares the detected data with preset benchmark values, and generates corresponding instructions based on the comparison results: S301. If the comparison result shows that the paper position is correct, the drive component 21 of the correction mechanism 2 will not work, and the feeding air box 4 will continue to feed the paper. S302. If the comparison result shows that the paper position has deviated, the controller generates a corresponding correction command and compensation amount, controls the drive component 21 of the correction mechanism 2 to start working, and makes corresponding compensation correction actions to make the paper return to the position defined by the reference value. During the correction process, the feeding air box 4 does not stop and continues to feed the paper. S04. After the correction action is completed, until the paper has completely passed through the detection area of ​​the sensing component 23, the controller controls the correction mechanism 2 to reset, so that the feeding body of the feeder is reset. S05, the feeding air box 4 conveys the next sheet of paper, the sensing component 23 performs the aforementioned sensing detection on the next sheet of paper, and repeats the above steps.

[0042] Another method for correcting the deviation of the feeder includes the following steps: The sensing component 23 performs overall detection on the paper stacked on the top surface of the feeding air box 4 and transmits the detection data to the controller. The controller analyzes and compares the detected data with preset benchmark values, and generates corresponding instructions based on the comparison results. If the comparison result shows that the position of the entire stack of paper is correct, the drive component 21 of the correction mechanism 2 will not work, and the feeding air box 4 will continue to feed the paper. If the comparison result shows that the posture of the whole stack of paper has deviated, the controller generates the corresponding correction command and compensation amount, controls the drive component 21 of the correction mechanism 2 to start working, and makes the corresponding compensation correction action to make the whole stack of paper return to the posture defined by the reference value. During the correction process, the feeding air box 4 does not stop and continues to feed the stack of paper. After the correction action is completed, until the entire stack of papers has completely passed through the detection area of ​​the sensing component 23, the controller controls the correction mechanism 2 to reset, thereby resetting the feeding body of the feeder.

[0043] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solution and inventive concept of the present invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A deviation-correcting feeder, characterized in that, Includes a base plate (1), on which a frame (3) is installed via a correction mechanism (2), and on the frame (3) are a feeding air box (4), a limiting mechanism (5) and a material support mechanism (6). The feeding air box (4) is located at the front end of the frame (3) along the paper feeding direction and is used to convey the stacked papers forward one by one; The material support mechanism (6) is located at the rear end of the frame (3) along the paper feeding direction and is used to support the rear end of the stacked paper. The limiting mechanism (5) is located above the front side of the feeding air box (4) along the paper feeding direction. It is used to limit the paper conveyed on the feeding air box (4) to the left and right and limit the number of papers conveyed each time. The correction mechanism (2) includes two drive components (21), four rotating components (22) and a sensing component (23). The two drive components (21) are respectively installed on both sides of the base plate (1) along the paper feeding direction, and respectively drive the connecting frame (3) on both sides along the paper feeding direction. The four rotating components (22) are respectively located at the four corners of the base plate (1). The four corners of the frame (3) are movably connected to the four corners of the base plate (1) through the rotating components (22) and can rotate relative to the base plate (1). The four rotating components (22) are located on the same arc concentric with the frame (3) when rotating. The sensing component (23) is installed on the limiting mechanism (5) and is used to identify whether the position of the paper being transported on the feeding air box (4) has deviated. If the sensing component (23) detects that the position of the paper being transported on the feeding air box (4) has shifted, the two driving components (21) simultaneously start reverse motion to drive the frame (3) to shift and compensate. With the cooperation of the rotating component (22), the frame (3) drives the feeding air box (4), the limiting mechanism (5), the material support mechanism (6) and the paper being transported to rotate as a whole to correct the transport position of the paper.

2. The correction feeder according to claim 1, characterized in that, The drive assembly (21) includes a first motor (211), a first lead screw (212) and a first nut (213). The first motor (211) is fixedly installed on one side of the base plate (1) along the paper feeding direction and is driven to one end of the first lead screw (212) through a coupling. The first nut (213) is fixedly installed on one side of the frame (3) along the paper feeding direction and is sleeved on the other end of the first lead screw (212). The length direction of the first lead screw (212) is the same as the paper feeding direction.

3. The correction feeder according to claim 1, characterized in that, The rotating assembly (22) includes a support shaft (221), a bearing (222), a fixed cover (223), and a rotating groove (224). One end of the support shaft (221) is fixedly connected to the bottom of the frame (3), and the other end is fixedly connected to the fixed cover (223). The bearing (222) is sleeved on the support shaft (221). The fixed cover (223) is used to limit the bearing (222) on the support shaft (221). The rotating groove (224) is fixedly installed on the base plate (1). The support shaft (221) is rotatably accommodated in the groove of the rotating groove (224) through the bearing (222).

4. The correction feeder according to claim 1, characterized in that, The frame (3) includes a first guide rail (31) and a second guide rail (32). The length direction of the first guide rail (31) is perpendicular to the length direction of the second guide rail (32) and perpendicular to the paper feeding direction. The first guide rail (31) is located above the feeding air box (4) for installing the limiting mechanism (5). The second guide rail (32) is located behind the feeding air box (4) along the feeding direction for installing the material support mechanism (6).

5. The correction feeder according to claim 4, characterized in that, The limiting mechanism (5) includes a front baffle (51), a left baffle (52), a right baffle (53), a sliding module (54), a cam module (55), and a bidirectional screw module (56). The sliding module (54) is slidably connected to the first guide rail (31). The left baffle (52), the front baffle (51), and the right baffle (53) are sequentially slidably connected to the first guide rail (31) through the sliding module (54). The cam module (55) is used to drive the front baffle (51) to move up and down on the frame (3). The bidirectional screw module (56) The left baffle (52) and the right baffle (53) are used to drive the left baffle (52) and the right baffle (53) to slide closer to each other or further away along the first guide rail (31). The left baffle (52) is used to limit the left side of the paper on the feeding air box (4), the right baffle (53) is used to limit the right side of the paper on the feeding air box (4), and the front baffle (51) is used to limit the front side of the paper on the feeding air box (4). The lower end of the front baffle (51) forms a gap between the front end of the front baffle (52) and the upper surface of the feeding air box (4) that allows only one piece of paper to pass through, so that the feeding air box (4) can only deliver one piece of paper at a time.

6. The correction feeder according to claim 5, characterized in that, The sliding module (54) includes a first connecting plate (541), a second connecting plate (542), a third connecting plate (543), and at least three sliders (544). The first connecting plate (541) is fixedly connected to the front baffle (51) and slidably connected to the first guide rail (31) through at least one slider (544). The second connecting plate (542) is connected to the left baffle (52) through the flattening module (57) and slidably connected to the first guide rail (31) through at least one slider (544). The third connecting plate (543) is fixedly connected to the right baffle (53) and slidably connected to the first guide rail (31) through at least one slider (544). The sensing component (23) includes two photoelectric sensors (231), which are respectively installed at the lower ends of the second connecting plate (542) and the third connecting plate (543), with the sensing ends facing downwards, so as to sense and detect whether the position of the paper being conveyed has shifted.

7. The correction feeder according to claim 6, characterized in that, The flattening module (57) includes a cylinder (571) and a fourth connecting plate (572). The cylinder (571) is fixedly installed on the second connecting plate (542) and drives the fourth connecting plate (572). The fourth connecting plate (572) is fixedly connected to the left baffle (52). The cylinder (571) drives the left baffle (52) to reciprocate along the length of the first guide rail (31) to flatten the paper stacked on the feeding box (4) in the left and right directions.

8. The correction feeder according to claim 4, characterized in that, The material support mechanism (6) includes a bracket (61), a lifting module (62) and a material support plate (63). The bracket (61) has sliders (544) that are slidably connected to the second guide rail (32) at both ends. The material support plate (63) is installed on the bracket (61) through the lifting module (62). The side of the material support plate (63) near the feeding air box (4) has a material support part (631) that protrudes forward along the paper feeding direction to support the paper to be conveyed. The lifting module (62) is used to drive the material support plate (63) to move up and down to adjust the height of the tail of the paper to be conveyed.

9. The correction feeder according to claim 8, characterized in that, The front side plate of the material support plate (63) with the material support part (631) is provided with at least two first through holes (632); the material support plate (63) is provided with a rotating shaft (633) near the material support part (631), and at least two extension plates (634) are provided on the rotating shaft (633). The extension plates (634) are provided in correspondence with the first through holes (632) and can rotate around the axis of the rotating shaft (633) to extend out of the first through hole (632) to hold the tail end of the paper to be conveyed, or rotate around the axis of the rotating shaft (633) and pass through the first through hole (632) to be stored inside the material support plate (63).

10. The correction feeder according to claim 9, characterized in that, The feeding mechanism (6) also includes a feeding module (64), which includes a feeding plate (641), a connecting rod (642), a pushing rod (643), an adjusting screw (644), an adjusting nut (645), and an adjusting handle (646). The feeding plate (641) is fixedly connected to the pushing rod (643) via the connecting rod (642) and is located above the feeding part (631). The feeding plate (641) is used to separate stacked papers. The connecting rod (642) passes through the second through hole (635) opened in the feeding plate (63). The moving rod (643) is movably installed on the inner side of the material support plate (63) and fixedly connected to the adjusting nut (645). The adjusting nut (645) is sleeved on the adjusting screw (644). The adjusting handle (646) is fixedly connected to the adjusting screw (644). The length direction of the adjusting screw (644) is consistent with the paper feeding direction. By turning the adjusting handle (646), the material distribution plate (641) can be driven to move back and forth along the paper feeding direction through the cooperation of the adjusting screw (644) and the adjusting nut (645) to adjust the position of the material distribution plate (641).

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