Printing feeding structure with dynamic deviation rectifying function

Abstract

The utility model relates to the technical field of printing equipment, in particular to a printing feeding structure with a dynamic deviation rectifying function, which comprises a U-shaped conveying frame and a printing machine, a conveying belt is arranged in the U-shaped conveying frame, a dynamic deviation rectifying component is arranged at the top of the U-shaped conveying frame and comprises two L-shaped mounting seats, fixed vertical plates are arranged at the tops of the two L-shaped mounting seats, and the two L-shaped mounting seats are arranged on the printing machine. A two-way screw rod is rotationally connected between the two fixed vertical plates, the outer wall of the two-way screw rod is in threaded connection with two moving blocks, infrared sensors are arranged at the bottoms of the two moving blocks, fixed blocks are arranged at the tops of the two L-shaped mounting seats, and electric cylinders are arranged on the opposite side faces of the two fixed blocks; a movable rod of the electric cylinder penetrates through the side face of the fixing block and is fixedly connected with a deviation rectifying plate. According to the printing feeding structure with the dynamic deviation correcting function, the deviation condition of a paperboard is detected in real time through the infrared sensor, the controller drives the electric cylinder to adjust the action of the deviation correcting plate, and deviation of the paperboard is corrected in real time.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, specifically to a printing feeding structure with dynamic correction function. Background Technology

[0002] In the printing industry, the stability and positional accuracy of the feeding process are crucial for achieving efficient and precise printing operations. However, in actual production, traditional feeding devices are prone to material deviation from the set position or misalignment due to external interference during material transport, such as equipment vibration or displacement during material placement. This positional deviation not only directly affects printing accuracy and pattern rendering but can also lead to printed waste, material waste, and reduced production efficiency. To address this issue, some existing technologies have incorporated correction devices into the feeding structure of printing equipment to correct material deviation.

[0003] Patent CN220702692U discloses a printing paperboard correction device, including a conveying mechanism and a printing press body. A correction mechanism and a cleaning mechanism are fixedly installed on the conveying mechanism. The correction mechanism includes a fixed block, the top surface of which is fixed to the conveying mechanism. A first threaded rod is rotatably connected to the inner wall of the fixed block. Two guide rods are fixedly connected to the inner wall of the fixed block, and baffles are fixedly connected to both ends of each guide rod. Both ends of the first threaded rod are rotatably connected to the baffles. A handle is fixedly connected to one end of the first threaded rod. Two movable frames are threadedly connected to the circumferential side of the first threaded rod. The circumferential side of the guide rod slides with the movable frames, and a mounting frame is fixedly connected to the movable frames. This invention solves the problem that existing correction devices have poor adjustability and can only correct paperboard of a single size, resulting in poor applicability and versatility.

[0004] The aforementioned prior art utilizes a first threaded screw to drive two moving frames to move closer or further apart, so that the distance between the two sets of straight-lined rollers is slightly larger than the width of the cardboard, thereby enabling the device to accurately correct cardboard of different widths. However, this device has the following drawbacks during the correction process: First, the two sets of straight-lined rollers are fixed after adjustment and cannot be dynamically adjusted according to the actual offset of the material; second, if the offset angle of the cardboard is too large when it enters the device, one corner of the cardboard may get stuck between two adjacent straight-lined rollers, and one side of the cardboard may abut against the straight-lined roller on the opposite mounting frame, causing the conveyor belt to be unable to transport the cardboard normally, thus interrupting the production process. Therefore, the prior art has obvious limitations in dynamic correction capability. In view of this, we propose a printing feeding structure with dynamic correction function. Utility Model Content

[0005] The purpose of this invention is to provide a printing feed structure with dynamic correction function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A printing feeding structure with dynamic correction function includes a U-shaped conveyor frame and a printing machine. The U-shaped conveyor frame provides support and installation foundation for the entire printing feeding structure. The U-shaped conveyor frame is equipped with a conveyor belt to carry the cardboard to be printed and transport it to the printing machine. The rear side of the U-shaped conveyor frame is equipped with a first motor for driving the conveyor belt. The first motor is connected to an external power source to ensure the smooth transport of the cardboard on the conveyor belt by providing power.

[0008] A dynamic correction component is located at the top of the U-shaped conveyor frame near the feeding end. This component detects and corrects cardboard deviation in real time. The dynamic correction component includes two L-shaped mounting bases arranged symmetrically front to back. These bases secure other components of the dynamic correction component. Each L-shaped mounting base has a fixed vertical plate at its top and near the right side, providing vertical support for the bidirectional lead screw, guide rod, and other components. A controller is located on the outer side of one of the fixed vertical plates. Two electric cylinders and a second motor are electrically connected to the controller via wires. The two electric cylinders operate independently, correcting the front and rear sides of the cardboard respectively. A bidirectional lead screw is rotatably connected between the two fixed vertical plates near the top. This lead screw drives two guide rods... The moving block moves along its axial direction to adjust the position of the two infrared sensors to adapt to cardboard of different widths. One of the fixed vertical plates has a second motor on its outer side for driving the bidirectional lead screw to rotate. The second motor is powered by an external power source. The outer wall of the bidirectional lead screw is threaded with two moving blocks. The bottom of each of the two moving blocks is equipped with an infrared sensor. The infrared sensor monitors the cardboard offset in real time by emitting infrared light and receiving reflected signals. When the cardboard is offset, the light emitted by the infrared sensor will shine on the cardboard, and the infrared emission path will change, thereby detecting the cardboard offset. At this time, the controller controls the two electric cylinders to work, so that the two correction plates correct the front and rear sides of the cardboard until the two infrared sensors can no longer detect the cardboard.

[0009] Each of the two L-shaped mounting bases has a fixing block at its top and near its left side. Each of the two fixing blocks has an electric cylinder on its opposite side. The electric cylinder is powered by an external power source. The moving rod of the electric cylinder passes through the side of the fixing block and is fixedly connected to a correction plate. The correction plate moves back and forth by the electric cylinder. The correction plate directly contacts the cardboard to correct the offset position of the cardboard and ensure that the cardboard is conveyed along the center line of the conveyor belt. The correction plate immediately resets after correcting the position of the cardboard.

[0010] Preferably, the bottom of the U-shaped conveyor frame is provided with multiple supports, which are used to support the overall structure of the machine and ensure stable operation of the equipment. The bottom of the supports is glued with anti-slip pads to prevent the equipment from sliding during operation.

[0011] Preferably, the L-shaped mounting base has multiple mounting holes on its side, and the L-shaped mounting base is detachably connected to the side of the U-shaped conveyor frame by bolts, which facilitates inspection and maintenance.

[0012] Preferably, a guide rod is provided between the two fixed vertical plates and near the bottom of the bidirectional lead screw. Both moving blocks are slidably connected to the outside of the guide rod. The guide rod is used to provide guiding support for the moving blocks and ensure that they slide smoothly along a straight line.

[0013] Preferably, a first rubber telescopic sleeve is provided on the outer side of the bidirectional lead screw, and the front and rear ends of the first rubber telescopic sleeve abut against the opposite sides of the two moving blocks, respectively, to protect the bidirectional lead screw from external contamination and extend its service life.

[0014] Preferably, the outer side of the bidirectional lead screw is fitted with two second rubber telescopic sleeves arranged symmetrically front to back. The opposite sides of the two second rubber telescopic sleeves abut against the opposite sides of the two moving blocks, and the opposite sides of the two second rubber telescopic sleeves abut against the opposite sides of the two fixed vertical plates, so as to protect the bidirectional lead screw from external contamination and extend its service life.

[0015] Preferably, the bottom of the correction plate is 0.1-0.3mm away from the upper surface of the conveyor belt to ensure that the conveyor belt will not be damaged by friction during the correction process. Positioning rods are provided on the opposite sides of the two correction plates near the bottom. The ends of the positioning rods penetrate through the side of the fixing block to the outside to ensure that the correction plates move accurately and stably.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This printing feeding structure with dynamic correction function uses an infrared sensor to detect the offset of the cardboard in real time by setting up a dynamic correction component. The controller drives the electric cylinder to adjust the movement of the correction plate to correct the offset of the cardboard in real time. Compared with the fixed adjustment method of the correction roller in the prior art, this utility model can dynamically adjust according to the offset state of the cardboard, which significantly improves the accuracy of the cardboard position during the conveying process, thereby ensuring the accuracy and quality of subsequent printing operations.

[0018] 2. This printing and feeding structure with dynamic correction function, by setting a bidirectional lead screw and its driven moving block, allows the dynamic correction component to flexibly adjust the detection position of the infrared sensor and the working range of the correction plate, so that it can adapt to cardboard of different widths.

[0019] 3. The printing feed structure with dynamic correction function has a first rubber telescopic sleeve and a second rubber telescopic sleeve on the outside of the bidirectional lead screw, which can effectively prevent dust, impurities and oil stains from corroding the bidirectional lead screw, reduce the failure rate of parts and extend the overall service life of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a partial structural schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the dynamic correction component structure in this utility model;

[0023] In the diagram: 1. U-shaped conveyor frame; 2. Conveyor belt; 3. First motor; 4. Printing machine; 5. Dynamic correction assembly; 50. L-shaped mounting base; 500. Mounting hole; 51. Fixed vertical plate; 52. Bidirectional lead screw; 53. Moving block; 54. Infrared sensor; 55. Fixed block; 56. Electric cylinder; 57. Correction plate; 58. Positioning rod; 59. Second motor; 501. First rubber telescopic sleeve; 502. Second rubber telescopic sleeve; 503. Guide rod; 6. Bracket. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Please see Figures 1-3 This utility model provides a technical solution:

[0027] The printing feeding structure with dynamic correction function includes a U-shaped conveyor frame 1 and a printing machine 4. The U-shaped conveyor frame 1 provides support and installation foundation for the entire printing feeding structure. The U-shaped conveyor frame 1 is equipped with a conveyor belt 2, which carries the cardboard to be printed and transports it to the printing machine 4. The rear side of the U-shaped conveyor frame 1 is equipped with a first motor 3 for driving the conveyor belt 2. The first motor 3 is connected to an external power source and provides power to ensure the smooth transport of the cardboard on the conveyor belt.

[0028] A dynamic correction component 5 is located at the top of the U-shaped conveyor frame 1 near the feeding end. This component is used to detect and correct the cardboard deviation during the conveying process in real time. The dynamic correction component 5 includes two L-shaped mounting bases 50 arranged symmetrically front to back. The L-shaped mounting bases 50 are used to fix other components of the dynamic correction component. A fixed vertical plate 51 is located at the top and near the right side of each of the two L-shaped mounting bases 50, providing vertical support for the bidirectional lead screw 52, ​​guide rod 503, and other components. A controller is located on the outer side of one of the fixed vertical plates 51. Two electric cylinders 56 and a second motor 59 are electrically connected to the controller via wires. The two electric cylinders 56 operate independently, respectively correcting the front and rear sides of the cardboard. A bidirectional lead screw 52 is rotatably connected between the two fixed vertical plates 51 near the top. The bidirectional lead screw 52 drives two moving... Block 53 moves along its axial direction to adjust the position of the two infrared sensors 54 to adapt to cardboard of different widths. One of the fixed vertical plates 51 has a second motor 59 on its outer side for driving the bidirectional lead screw 52 to rotate. The second motor 59 is powered by an external power source. The outer wall of the bidirectional lead screw 52 is threaded with two moving blocks 53. The bottom of each moving block 53 is equipped with an infrared sensor 54. The infrared sensor 54 monitors the offset of the cardboard in real time by emitting infrared light and receiving reflected signals. When the cardboard is offset, the light emitted by the infrared sensor 54 will shine on the cardboard, and the infrared emission path will change, thereby detecting the offset of the cardboard. At this time, the controller controls the two electric cylinders 56 to work, so that the two correction plates 57 correct the front and rear sides of the cardboard until the two infrared sensors 54 can no longer detect the cardboard.

[0029] Each of the two L-shaped mounting bases 50 has a fixing block 55 on its top and near the left side. Each of the two fixing blocks 55 has an electric cylinder 56 on its opposite side. The electric cylinder 56 is powered by an external power source. The moving rod of the electric cylinder 56 passes through the side of the fixing block 55 and is fixedly connected to a correction plate 57. The correction plate 57 is moved back and forth by the electric cylinder 56. The correction plate 57 directly contacts the cardboard to correct the offset position of the cardboard and ensure that the cardboard is conveyed along the center line of the conveyor belt 2. The correction plate 57 immediately resets after correcting the position of the cardboard.

[0030] In this embodiment, the bottom of the U-shaped conveyor frame 1 is provided with multiple supports 6. The supports 6 are used to support the overall structure and ensure stable operation of the equipment. Anti-slip pads are glued to the bottom of the supports 6 to prevent the equipment from sliding during operation.

[0031] Specifically, the L-shaped mounting base 50 has multiple mounting holes 500 on its side. The L-shaped mounting base 50 is detachably connected to the side of the U-shaped conveyor frame 1 by bolts, which facilitates inspection and maintenance.

[0032] Furthermore, a guide rod 503 is provided between the two fixed vertical plates 51 and near the bottom of the bidirectional lead screw 52. Both moving blocks 53 are slidably connected to the outside of the guide rod 503. The guide rod 503 is used to provide guiding support for the moving blocks 53 to ensure that they slide smoothly along a straight line.

[0033] Furthermore, a first rubber telescopic sleeve 501 is fitted on the outer side of the bidirectional lead screw 52. The front and rear ends of the first rubber telescopic sleeve 501 abut against the opposite sides of the two moving blocks 53, respectively, to protect the bidirectional lead screw 52 from external contamination and extend its service life.

[0034] Furthermore, two second rubber telescopic sleeves 502 are symmetrically arranged on the outer side of the bidirectional lead screw 52. The opposite sides of the two second rubber telescopic sleeves 502 abut against the opposite sides of the two moving blocks 53, and the opposite sides of the two second rubber telescopic sleeves 502 abut against the opposite sides of the two fixed vertical plates 51, which are used to protect the bidirectional lead screw 52 from external contamination and extend its service life.

[0035] Furthermore, the bottom of the correction plate 57 is 0.1-0.3mm away from the upper surface of the conveyor belt 2 to ensure that the conveyor belt 2 will not be damaged by friction during the correction process. Positioning rods 58 are provided on the opposite sides of the two correction plates 57 near the bottom. The ends of the positioning rods 58 pass through the side of the fixing block 55 to the outside, ensuring that the correction plate 57 moves accurately and stably.

[0036] In this embodiment, the printing and feeding structure with dynamic correction function operates as follows: Based on the width of the cardboard, the controller starts the second motor 59, driving the bidirectional lead screw 52 to rotate. This causes the moving block 53 to slide on the guide rod 503, adjusting the position of the infrared sensors 54 to ensure their detection range is exactly on both sides of the cardboard. The cardboard to be printed is then placed flat on the conveyor belt 2, ensuring the cardboard's front-to-back direction is consistent and it maintains a certain distance from the edge of the conveyor belt 2. The first motor 3 is then started, driving the conveyor belt 2 to begin conveying the cardboard. When the cardboard enters the detection area of ​​the dynamic correction component 5, the infrared sensors 54 begin to work, emitting infrared rays and receiving reflected signals to detect whether the cardboard has shifted in real time. If the cardboard shifts, the infrared emission path changes, and the infrared sensors 54 feed back the shift signal. The controller, based on the offset signal, instructs the corresponding electric cylinder 56 to operate, driving the connected correction plate 57 to move towards the offset side to correct the cardboard. The correction plate 57 directly contacts the edge of the cardboard, correcting its position and ensuring that the cardboard is conveyed along the center line of the conveyor belt 2. After the cardboard is corrected, the infrared sensor 54 detects that the cardboard is in the correct position, and the controller instructs the electric cylinder 56 to reset, and the correction plate 57 returns to its initial position, preparing for the correction of the next cardboard. The corrected cardboard continues to be conveyed to the working area of ​​the printing press 4 for subsequent printing operations. If it is necessary to change to a cardboard of a different width, the controller is restarted, and the second motor 59 drives the bidirectional lead screw 52 to rotate, moving the detection range of the infrared sensor 54 to ensure that the sensor's detection range is on both sides of the new specification cardboard and that the correction plate 57 can effectively contact the edge of the cardboard.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A printing feed structure with dynamic correction function, comprising a U-shaped conveyor frame (1) and a printing press (4), characterized in that: The U-shaped conveyor frame (1) is equipped with a conveyor belt (2). A first motor (3) for driving the conveyor belt (2) is provided on the rear side of the U-shaped conveyor frame (1). A dynamic correction component (5) is provided at the top of the U-shaped conveyor frame (1) near the loading end. The dynamic correction component (5) includes two L-shaped mounting seats (50) arranged symmetrically front to back. A fixed vertical plate (51) is provided at the top and near the right side of each of the two L-shaped mounting seats (50). A bidirectional lead screw (52) is rotatably connected between the two fixed vertical plates (51) near the top. A second motor (59) for driving the bidirectional lead screw (52) to rotate is provided on the outer side of one of the fixed vertical plates (51). Two moving blocks (53) are threaded to the outer wall of the bidirectional lead screw (52). Infrared sensors (54) are provided at the bottom of the two moving blocks (53). Fixed blocks (55) are provided at the top and near the left side of the two L-shaped mounting bases (50). Electric cylinders (56) are provided on the opposite sides of the two fixed blocks (55). The moving rod of the electric cylinder (56) passes through the side of the fixed block (55) and is fixedly connected to the correction plate (57).

2. The printing feeding structure with dynamic correction function according to claim 1, characterized in that: The bottom of the U-shaped conveyor (1) is provided with multiple supports (6), and the bottom of the supports (6) is glued with anti-slip pads.

3. The printing feeding structure with dynamic correction function according to claim 1, characterized in that: The L-shaped mounting base (50) has multiple mounting holes (500) on its side, and the L-shaped mounting base (50) is detachably connected to the side of the U-shaped conveyor frame (1) by bolts.

4. The printing feeding structure with dynamic correction function according to claim 1, characterized in that: A guide rod (503) is provided between the two fixed vertical plates (51) and near the bottom of the bidirectional lead screw (52), and the two moving blocks (53) are slidably connected to the outside of the guide rod (503).

5. The printing feeding structure with dynamic correction function according to claim 1, characterized in that: The outer side of the bidirectional lead screw (52) is fitted with a first rubber telescopic sleeve (501), and the front and rear ends of the first rubber telescopic sleeve (501) abut against the opposite sides of the two moving blocks (53).

6. The printing feed structure with dynamic correction function according to claim 1, characterized in that: The outer side of the bidirectional lead screw (52) is fitted with two second rubber telescopic sleeves (502) arranged symmetrically front and back. The opposite sides of the two second rubber telescopic sleeves (502) abut against the opposite sides of the two moving blocks (53), and the opposite sides of the two second rubber telescopic sleeves (502) abut against the opposite sides of the two fixed vertical plates (51).

7. The printing feeding structure with dynamic correction function according to claim 1, characterized in that: The bottom of the correction plate (57) is 0.1-0.3 mm away from the upper surface of the conveyor belt (2). Positioning rods (58) are provided on the opposite sides of the two correction plates (57) near the bottom. The end of the positioning rod (58) passes through the side of the fixing block (55) to the outside.

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