Automatic feeding device of color box printing machine

Abstract

This application relates to an automatic feeding device for a color box printing machine, specifically in the field of corrugated carton production equipment. It includes multiple support frames and a printing machine. A conveyor belt is mounted on top of each support frame, and a positioning mechanism is located at the top of the conveyor belt. A feeding mechanism is located on the right side of the conveyor belt. The positioning mechanism includes two support plates, the bottom ends of which are fixedly connected to the front and rear sides of the top of the conveyor belt. An adjusting rod is slidably connected to the inner wall of each support plate, and a connecting plate is fixedly connected to the side of the adjusting rod away from the support plate. Two sliding columns are slidably connected to the inner wall of the connecting plate. In this application, rollers apply a reverse thrust through spring elasticity, forcing the cartons to move towards the center of the conveyor belt to a balanced state. This ensures that cartons of different widths can be accurately aligned with the center of the conveyor belt, avoiding printing position deviations caused by manual handling and positioning errors.

Description

Technical Field

[0001] This application relates to the field of corrugated cardboard box production equipment technology, and in particular to an automatic feeding device for a color box printing machine. Background Technology

[0002] Corrugated cardboard boxes are paper packaging containers made primarily of corrugated cardboard. Their core structure consists of a multi-layered composite structure formed by bonding a corrugated core layer (flute types include A, B, C, E, etc.) between two layers of flat cardboard. This corrugated core acts like a mechanical arch, giving the cardboard excellent compression and impact resistance while maintaining a relatively light weight. The production of corrugated cardboard boxes involves processes such as corrugated cardboard manufacturing, die-cutting, printing, slotting, and gluing (or binding). They can be customized into various specifications, flute types, and printed patterns according to the size, weight, and transportation requirements of different goods. They are one of the most widely used packaging forms in modern logistics, e-commerce, food, and electronics industries.

[0003] In terms of logistics adaptability, corrugated cardboard boxes have a smooth surface that facilitates printing, allowing for clear labeling of product names, specifications, storage and transportation markings (such as "moisture-proof," "stacking limits," etc.), and brand information. This satisfies the information traceability needs of logistics management while also serving as brand promotion. Furthermore, their lightweight and foldable nature significantly reduces warehousing space and transportation costs. Standardized corrugated cardboard boxes can be directly adapted to automated sorting lines, and their recyclable and environmentally friendly attributes (recycling rate exceeding 90%) align perfectly with the trend of green packaging. From electronic products to fresh food, corrugated cardboard boxes, through their structural advantages and functional design, have become a key packaging carrier connecting the production and consumption ends, comprehensively ensuring the efficiency and safety of commodity circulation.

[0004] In the printing process of corrugated carton production, the traditional feeding method relies on forklifts to stack cardboard to the feeding area, and then workers carry it to the printing machine conveyor belt one by one. This method has problems such as insufficient manual positioning accuracy, poor adaptability, and low degree of automation. Different sizes of cartons require manual adjustment of the spacing between the positioning baffles, which can easily cause the cartons to shift due to operational deviations, resulting in skewed printing positions and thus increasing the scrap rate. To address these issues, an automatic feeding device for color box printing machines is proposed. Utility Model Content

[0005] The purpose of this application is to provide an automatic feeding device for a color box printing machine, which aims to improve the problems of insufficient positioning accuracy, poor adaptability to different specifications of cartons, and low degree of automation in the prior art, resulting in skewed printing position, high scrap rate, and high labor cost.

[0006] The automatic feeding device for a color box printing machine provided in this application adopts the following technical solution:

[0007] An automatic feeding device for a color box printing machine includes multiple support frames and a printing machine. A conveyor belt is provided on the top of the multiple support frames, a positioning mechanism is provided at the top of the conveyor belt, and a feeding mechanism is provided on the right side of the conveyor belt.

[0008] The positioning mechanism includes two support plates, the bottom ends of which are fixedly connected to the front and rear sides of the top of the conveyor belt. An adjusting rod is slidably connected to the inner wall of the support plate. A connecting plate is fixedly connected to the side of the adjusting rod away from the support plate. Two sliding columns are slidably connected to the inner wall of the connecting plate. A spring is sleeved on the outside of the sliding columns. A fixed seat is fixedly connected to the side of the two sliding columns away from the connecting plate. A roller is rotatably connected inside the fixed seat.

[0009] The above technical solution involves setting up multiple support frames to support the conveyor belt, configuring a positioning mechanism at the top of the conveyor belt, and setting a feeding mechanism on the right side to form a complete automated feeding system. The support frames provide a stable base for the conveyor belt, ensuring smooth transport of cartons. The positioning mechanism can automatically calibrate the position of the cartons, and the feeding mechanism realizes automated transfer, which completely replaces the traditional manual handling process, significantly improving the continuity and production efficiency of the printing process, and reducing labor costs and labor intensity.

[0010] As a further description of the above technical solution:

[0011] A limiting plate is fixedly connected to the side of the two sliding columns away from the fixed base. The side of the two limiting plates that is close to each other is in contact with the side of the two connecting plates that is far from each other. The side of the plurality of springs that is close to each other is fixedly connected to the side of the two fixed bases that is far from each other. The side of the plurality of springs that is far from each other is fixedly connected to the side of the two connecting plates that is close to each other.

[0012] The above technical solution involves setting a limiting plate on the side of the sliding column away from the fixed seat, so that it abuts against the connecting plate. At the same time, a spring connects the fixed seat and the connecting plate. The limiting plate can prevent the sliding column from falling out of the connecting plate, ensuring the structural reliability of the positioning mechanism. The elastic restoring force of the spring causes the fixed seat and rollers to automatically compress and rebound when the carton is squeezed, continuously applying lateral thrust to the carton, realizing dynamic centering calibration, effectively offsetting the positional deviation of the carton during the conveyor process, and ensuring that it always moves along the center of the conveyor belt.

[0013] As a further description of the above technical solution:

[0014] The top of the support plate has multiple locking holes, and the top of the support plate is threaded with bolts, the bottom of which contacts the inside of the locking holes;

[0015] The above technical solution involves: multiple locking holes on the top of the support plate, which are locked to the adjusting rods by bolts. When the bolts are loosened, the adjusting rods can slide laterally along the inner wall of the support plate, flexibly adjusting the distance between the two adjusting rods to accommodate cartons of different widths. After adjustment, the bolts are tightened, and the cooperation between the locking holes and the bolts fixes the position of the adjusting rods, preventing changes in the distance due to equipment vibration and ensuring the stability of the centering accuracy of the positioning mechanism.

[0016] As a further description of the above technical solution:

[0017] The feeding mechanism includes a base plate, the bottom end of which is fixedly connected to the ground, the bottom end of which is fixedly connected to the ground, a hydraulic rod fixedly connected to the top end of the base plate, a top plate fixedly connected to the driving end of the hydraulic rod, a square shell fixedly connected to the top end of the top plate, a material blocking component provided at the top end of the base plate, and a material pushing component provided inside the square shell.

[0018] Through the above technical solution: the feeding mechanism uses the base plate as a base and integrates hydraulic rods, top plate, square shell, material blocking component and material pushing component. The hydraulic rod drives the top plate to rise and fall, so that the bearing surface of the square shell can accurately match the height of the end of the conveyor belt or the inlet of the printing machine. The material blocking component and the material pushing component are linked to complete the blocking, receiving, lifting and pushing actions of the carton in sequence, realizing the fully automated transfer from the conveyor belt to the printing machine, reducing manual intervention while improving the accuracy and efficiency of the feeding process.

[0019] As a further description of the above technical solution:

[0020] The material blocking assembly includes a support block, the bottom end of which is fixedly connected to the top left side of the base plate, a cylinder is fixedly connected to the top of the support block, and a baffle is fixedly connected to the driving end of the cylinder.

[0021] The above technical solution involves a material blocking assembly consisting of a support block, a cylinder, and a baffle. The support block is fixed to the top left of the base plate, and the cylinder drives the baffle to rise and fall vertically. When the photoelectric sensor detects that the carton has reached the end of the conveyor belt, the cylinder quickly drives the baffle to rise, preventing the carton from moving forward. Combined with the thrust of the conveyor belt, the carton is fully inserted into the square shell, avoiding feeding failure due to the carton being partially suspended in the air, and providing a stable starting position for subsequent material pushing processes.

[0022] As a further description of the above technical solution:

[0023] The pushing assembly includes a motor, the bottom of which is fixedly connected to the bottom inner wall of the square shell. A rotating rod is fixedly connected to the drive end of the motor. A transmission rod is rotatably connected to the left side of the rotating rod. A sliding block is rotatably connected to the bottom left end of the transmission rod. A guide plate is fixedly connected to the bottom inner wall of the square shell. The inner wall of the sliding block is slidably connected to the outer wall of the guide plate. A transmission plate is fixedly connected to the left side of the sliding block. The outer wall of the transmission plate is slidably connected to the left inner wall of the square shell. A push plate is fixedly connected to the left side of the transmission plate.

[0024] Through the above technical solution: the pushing assembly drives the rotating rod through the motor, which in turn drives the sliding block to move laterally along the guide plate via the transmission rod, thereby pushing the transmission plate and the push plate to move. The rotational motion of the motor is converted into the uniform linear motion of the push plate through the crank-slider mechanism. The pushing force is stable and controllable, avoiding squeezing damage to the carton. The guiding effect of the guide plate on the sliding block ensures the straightness of the lateral movement of the push plate, so that the carton can enter the printing press feed port accurately and smoothly, improving the feeding accuracy and reliability.

[0025] As a further description of the above technical solution:

[0026] The top four corners of the base plate are fixedly connected to guide posts, and the inner wall of the top plate is slidably connected to the outer wall of the four guide posts.

[0027] The above technical solution involves setting guide columns at the four corners of the top of the base plate, with the inner wall of the top plate slidably connected to the guide columns. The guide columns provide vertical guidance for the lifting and lowering movement of the top plate. By limiting the lateral displacement of the top plate, the hydraulic rod is prevented from bearing eccentric loads, ensuring that the square shell remains stable and undisturbed during the lifting and lowering process. This allows for precise docking of the conveyor belt and the printing machine, improving the stability and positioning accuracy of the feeding mechanism.

[0028] As a further description of the above technical solution:

[0029] A mounting block is fixedly connected to the rear top of the conveyor belt. A photoelectric sensor is installed inside the mounting block. Multiple springs are fixedly connected to the inner walls of the left and right sides of the mounting block. Two buffer plates are fixedly connected to the adjacent sides of the multiple springs. The adjacent sides of the two buffer plates are in contact with the left and right sides of the photoelectric sensor.

[0030] The above technical solution involves installing a photoelectric sensor inside the mounting block at the rear of the top of the conveyor belt. The sensor is connected to the buffer plate on both sides by springs. The photoelectric sensor can detect the position of the carton in real time. When the carton blocks the light beam, it triggers the control system to start the feeding mechanism, realizing the linkage of the automated process. Springs and the buffer plate form a shock absorption structure to absorb the vibration and impact of the conveyor belt during operation, prevent the photoelectric sensor from shifting due to vibration, ensure the stability and reliability of the detection signal, and avoid false detection or missed detection.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. In this utility model, after the bolts are loosened, the adjusting rod can slide laterally along the inner wall of the support plate, so that the distance between the two rollers can be freely adjusted to adapt to cartons of different widths. When the cartons are conveyed to the positioning mechanism, if they deviate from the center, one roller contacts the edge of the cartons and pushes the fixed seat to compress the spring, while the other roller applies a reverse thrust through the spring elastic force, forcing the cartons to move towards the center of the conveyor belt to a balanced state, ensuring that cartons of different widths can be accurately aligned with the center of the conveyor belt, and avoiding printing position deviation caused by manual handling positioning deviation;

[0033] 2. In this utility model, when the photoelectric sensor detects that the carton has reached the end of the conveyor belt, the control system synchronously triggers the cylinder to raise the baffle to block the carton. The hydraulic rod drives the square shell to descend to be flush with the conveyor belt. The carton automatically enters the square shell under the thrust of the conveyor belt (without manual handling). Then, the hydraulic rod raises the square shell to the height of the printing machine inlet. The motor drives the rotating rod to drive the push plate through the transmission rod to push the carton into the printing station. After the loading is completed, all parts automatically reset and wait for the next cycle. This avoids occupational injuries such as lumbar muscle strain caused by frequent bending over to carry materials, and significantly improves production safety and efficiency. Attached Figure Description

[0034] Figure 1 This is a perspective view of an automatic feeding device for a color box printing machine according to the present invention.

[0035] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0036] Figure 3 This is a schematic diagram of the structure of the base plate of the automatic feeding device for a color box printing machine proposed in this utility model;

[0037] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0038] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0039] Explanation of reference numerals in the attached drawings: 1. Support frame; 2. Printing machine; 3. Conveyor belt; 4. Positioning mechanism; 41. Support plate; 42. Adjusting rod; 43. Clip hole; 44. Bolt; 45. Connecting plate; 46. Sliding column; 47. Spring 1; 48. Fixed seat; 49. Roller; 5. Feeding mechanism; 51. Base plate; 52. Hydraulic rod; 53. Top plate; 54. Square shell; 55. Motor; 56. Rotating rod; 57. Transmission rod; 58. Sliding block; 59. Guide plate; 510. Transmission plate; 511. Push plate; 512. Guide column; 513. Support block; 514. Cylinder; 515. Baffle; 6. Mounting block; 7. Photoelectric sensor; 8. Spring 2; 9. Buffer plate. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0041] Example: An automatic feeding device for a color box printing machine, referring to... Figure 1 , Figure 2 and Figure 5 The system includes multiple support frames 1 and a printing machine 2. The top of the multiple support frames 1 is equipped with a conveyor belt 3. The multiple support frames 1 are arranged in an array, with the bottom fixed to the ground and the top supported by the welded conveyor belt 3 to form a stable horizontal conveying platform. The conveyor belt 3 consists of a drive roller, a driven roller and a ring conveyor belt. When the drive motor drives the roller to rotate, the conveyor belt drives the carton to be conveyed to the top along the conveyor belt 3 through friction. The printing machine 2 is the core equipment of the carton printing process. The bottom is fixed to the ground by anchor bolts. It is equipped with a printing roller, an ink tank and a transmission system. The carton is conveyed to the printing area by the conveyor belt 3. The graphic plate on the surface of the printing roller dips into the ink and is pressed onto the surface of the carton by the pressure roller to complete single-color or multi-color printing. The top of the conveyor belt 3 is equipped with a positioning mechanism 4 and the right side of the conveyor belt 3 is equipped with a feeding mechanism 5.

[0042] Specifically, multiple support frames 1 are welded in an array to support the conveyor belt 3, forming a stable horizontal conveying platform. This prevents the cartons from shaking during transport and ensures precise docking between the positioning mechanism 4 and the feeding mechanism 5. The conveyor belt 3 is driven by a motor, enabling continuous transport of cartons. Compared with traditional manual handling, efficiency is greatly improved. The printing machine 2 is firmly fixed to the ground, and its inlet is precisely aligned with the end of the conveyor belt. Combined with the subsequent feeding mechanism, it can effectively control the printing position error of the cartons, reduce the scrap rate, and lay a solid foundation for automated production.

[0043] The positioning mechanism 4 includes two support plates 41, the bottom ends of which are fixedly connected to the front and rear sides of the top of the conveyor belt 3. Adjusting rods 42 are slidably connected to the inner walls of the support plates 41. Multiple locking holes 43 are provided on the top of the support plates 41, and bolts 44 are threadedly connected to the top of the support plates 41. The bottom of the bolts 44 contacts the inside of the locking holes 43. The support plates 41 have a "door" shaped frame structure, which limits the lateral movement range of the adjusting rods 42. Simultaneously, through the cooperation of the bolts 44 and the locking holes 43, the adjusting rods 42 are locked in a preset position. The adjusting rods 42 can slide laterally along the width direction of the conveyor belt 3. When the bolts 44 are loosened, the adjusting rods 42 can move freely, changing the distance between the front and rear adjusting rods 42. A connecting plate 45 is fixedly connected to the side of the adjusting rods 42 away from the support plates 41. Two sliding columns 46 are slidably connected to the inner wall of the connecting plate 45. Springs 47 are sleeved on the outside of the sliding columns 46. The two sliding columns 46 are fixed on the side away from the fixed seat 48. A limiting plate is connected, with the adjacent side of the two limiting plates contacting the distant side of the two connecting plates 45. The limiting plate is used to prevent the sliding column 46 from falling off. A fixed seat 48 is fixedly connected to the side of the two sliding columns 46 away from the connecting plate 45. The adjacent side of multiple springs 47 is fixedly connected to the distant side of the two fixed seats 48, and the distant side of multiple springs 47 is fixedly connected to the adjacent side of the two connecting plates 45. The springs 47 are sleeved on the outside of the sliding column 46, and their two ends are fixed to the fixed seat 48 and the connecting plate 45 respectively, providing elastic restoring force. When the carton pushes the fixed seat 48 to move, the springs 47 compress and store potential energy, and force the carton to move towards the center of the conveyor belt 3 through elastic force. The fixed seat 48 is rotatably connected to a roller 49. The function of the roller 49 is to replace sliding friction with rolling friction when it contacts the side of the carton, thereby reducing the resistance of the carton conveying. At the same time, under the elastic force of the springs 47, a lateral thrust is applied to the carton to achieve automatic centering.

[0044] Specifically, the lateral sliding design of the adjusting rod 42 and the support plate 41 can quickly adapt to cartons of different widths. Workers can shorten the adjustment time with simple operation. The spring 47 and the roller 49 work together to enable the cartons to automatically center during the conveyor process. Even if the initial position of the cartons is offset, it can be corrected to the center of the conveyor belt by the elastic force of the spring, which solves the problem of printing skew caused by manual positioning deviation. The roller 49 adopts rolling friction, which greatly reduces the wear on the surface of the cartons, and is especially suitable for cartons that have been pre-printed.

[0045] A mounting block 6 is fixedly connected to the rear top of the conveyor belt 3. A photoelectric sensor 7 is installed inside the mounting block 6. The photoelectric sensor 7 detects the position of the carton by emitting and receiving light beams. When the carton blocks the light beam, it triggers the control system to start the feeding mechanism 5. Multiple springs 8 are fixedly connected to the inner walls of the left and right sides of the mounting block 6. Two buffer plates 9 are fixedly connected to the adjacent side of the multiple springs 8. The adjacent side of the two buffer plates 9 contacts the left and right sides of the photoelectric sensor 7. The springs 8 and buffer plates 9 on both sides of the mounting block 6 form a shock absorption structure to absorb the vibration of the conveyor belt 3, prevent the photoelectric sensor 7 from shifting due to impact, and ensure that the detection signal is stable and reliable.

[0046] Specifically, the photoelectric sensor 7 uses a light beam to detect the position of the carton, and the delay error in triggering the feeding mechanism is extremely small, which can ensure that it keeps in sync with the printing press cycle. The spring 8 and the buffer plate 9 in the mounting block 6 form a shock absorption structure, which can effectively absorb the vibration generated by the conveyor belt during operation, prevent the sensor from shifting due to impact, ensure the stability and reliability of the detection signal, and reduce the occurrence of false detection or missed detection.

[0047] Reference Figure 3 and Figure 4 The feeding mechanism 5 includes a base plate 51, the bottom end of which is fixedly connected to the ground. The bottom end of the printing machine 2 is also fixedly connected to the ground. A hydraulic rod 52 is fixedly connected to the top end of the base plate 51. A top plate 53 is fixedly connected to the driving end of the hydraulic rod 52. The hydraulic rod 52 achieves the lifting and lowering of the top plate 53 by the inflow and outflow of hydraulic oil. The top plate 53 is a rectangular flat plate. A square shell 54 is fixedly connected to the top end of the top plate 53. A baffle assembly is provided at the top end of the base plate 51. The base plate 51 is fixed to the ground and serves as the base of the feeding mechanism 5, bearing the weight of components such as the hydraulic rod 52 and the baffle assembly. The baffle assembly includes a support block 513, the bottom end of which is fixedly connected to the left side of the top end of the base plate 51. A cylinder 514 is fixedly connected to the top end of the support block 513. A baffle 515 is fixedly connected to the driving end of the cylinder 514.

[0048] Specifically, the base plate 51 and guide column 512 provide rigid support and vertical guidance for the hydraulic rod 52, ensuring that the tilt error of the top plate 53 during the lifting process is controlled within a very small range, preventing the square shell 54 from being misaligned. The cylinder 514 drives the baffle 515 with a fast response speed, which can block the carton in time. Combined with the thrust of the conveyor belt, the carton can be completely inserted into the square shell, providing a stable foundation for the subsequent pushing process.

[0049] The square shell 54 houses a pushing assembly, which provides a mounting position for the assembly. The pushing assembly includes a motor 55, the bottom of which is fixedly connected to the inner bottom wall of the square shell 54. The motor 55 provides power for the pushing action. A rotating rod 56 is fixedly connected to the drive end of the motor 55. A transmission rod 57 is rotatably connected to the left side of the rotating rod 56. A sliding block 58 is rotatably connected to the bottom left side of the transmission rod 57. A guide plate 59 is fixedly connected to the inner bottom wall of the square shell 54. The inner wall of the sliding block 58 is slidably connected to the outer wall of the guide plate 59. When the motor 55 rotates, the eccentric motion of the rotating rod 56 is converted into the reciprocating oscillation of the transmission rod 57, thereby driving... The sliding block 58 moves laterally along the guide plate 59. A transmission plate 510 is fixedly connected to the left side of the sliding block 58. The outer wall of the transmission plate 510 is slidably connected to the inner left wall of the square shell 54. A push plate 511 is fixedly connected to the left side of the transmission plate 510. The lateral movement of the sliding block 58, in conjunction with the connection of the transmission plate 510, drives the push plate 511 to push the carton into the printing machine 2. Guide posts 512 are fixedly connected to the top four corners of the bottom plate 51. The inner wall of the top plate 53 is slidably connected to the outer wall of the four guide posts 512. The function of the guide posts 512 is to provide vertical guidance for the lifting and lowering of the top plate 53, to prevent the hydraulic rod 52 from being eccentrically stressed, and to ensure that the lifting and lowering process of the square shell 54 is stable and without shaking.

[0050] Specifically, the motor 55 smoothly converts the rotational motion into the linear motion of the push plate 511 through the eccentric rotating rod 56 and the transmission rod 57. The thrust is stable, which not only avoids damage to the carton, but also ensures that the feeding is completed smoothly. The T-shaped guide rails of the guide plate 59 and the sliding block 58 are precisely matched to ensure the straightness of the lateral movement of the push plate, so that the carton can enter the feed port accurately. After the feeding is completed, the sliding block 58 can quickly return to its original position. With the lifting speed of the hydraulic rod 52, high-speed circulation is achieved, which meets the production needs of processing a large number of cartons per hour.

[0051] Working principle: When the conveyor belt 3 transports the carton to the top, two support plates 41 are fixed on the front and rear sides of the top of the conveyor belt 3. The adjusting rod 42 can slide laterally along the inner wall of the support plate 41. By loosening the bolt 44 and moving the adjusting rod 42, the horizontal distance between the two adjusting rods 42 is changed, thereby adjusting the lateral spacing of the connecting plates 45 on both sides and the rollers 49 to adapt to the width of the carton. When the carton is transported to the positioning mechanism 4, if it deviates from the center, one side roller 49 contacts the edge of the carton and pushes the fixed seat 48 to drive the sliding column 46 to compress the spring 47. The other side roller 49 simultaneously applies a reverse elastic force. The elastic force of the spring forces the carton to move towards the center to balance and center. At the same time, the roller 49 can rotate around the fixed seat 48 to reduce friction. The limiting plate limits the spring compression stroke to avoid excessive compression. Finally, the cartons of different widths can be automatically aligned to the center position at the end of the conveyor belt 3, providing a stable benchmark for the feeding process.

[0052] When the photoelectric sensor 7 detects that the carton has reached the end of the conveyor belt 3, the hydraulic rod 52 at the top of the base plate 51, triggered by the control system, drives the top plate 53 to descend along the guide column 512, making the bearing surface of the square shell 54 flush with the end of the conveyor belt 3. At the same time, the cylinder 514 on the support block 513 drives the baffle 515 to rise, preventing the carton from moving forward. The carton enters the top plate 53 under the thrust of the conveyor belt 3, and the hydraulic rod 52 raises the top plate 53 to the height of the printing machine 2 inlet. At this time, the motor inside the square shell 54... 55 drives the rotating rod 56 to rotate, which drives the sliding block 58 to slide laterally along the guide plate 59 through the transmission rod 57. This, in turn, pushes the transmission plate 510 and the push plate 511 to smoothly push the carton into the printing station. After the loading is completed, the hydraulic rod 52 returns to the standby height, the baffle 515 descends and resets, and the push plate 511 retracts with the sliding block 58, waiting for the next cycle. The entire process achieves the automated transfer of the carton from the conveyor belt 3 to the printing machine 2 through the precise coordination of photoelectric detection, hydraulic drive and mechanical transmission.

[0053] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic feeding device of a color box printing machine, comprising a plurality of support frames (1) and a printing machine (2), characterized in that, The top of the plurality of support frames (1) is provided with a conveying belt (3), the top end of the conveying belt (3) is provided with a positioning mechanism (4), the right side of the conveying belt (3) is provided with a feeding mechanism (5); The positioning mechanism (4) comprises two supporting plates (41), the bottom ends of the two supporting plates (41) are fixedly connected to the top front and back sides of the conveying belt (3), the inner wall of the supporting plate (41) is slidably connected with an adjusting rod (42), the side away from the supporting plate (41) of the adjusting rod (42) is fixedly connected with a connecting plate (45), the inner wall of the connecting plate (45) is slidably connected with two sliding columns (46), the outer part of the sliding column (46) is sleeved with a spring (47), the side away from the connecting plate (45) of the two sliding columns (46) is fixedly connected with a fixed seat (48), and the inner part of the fixed seat (48) is rotatably connected with a roller (49).

2. The automatic feeding device of the color case printing machine according to claim 1, characterized in that, The side away from the fixed seat (48) of the two sliding columns (46) is fixedly connected with a limiting plate, the side close to the two limiting plates is in contact with the side away from the two connecting plates (45), the side close to the plurality of springs (47) is fixedly connected to the side away from the two fixed seats (48), and the side away from the plurality of springs (47) is fixedly connected to the side close to the two connecting plates (45).

3. The automatic feeding device of the color case printing machine according to claim 1, characterized in that, The top of the supporting plate (41) is provided with a plurality of clamping holes (43), and the top of the supporting plate (41) is threadedly connected with a bolt (44), and the bottom of the bolt (44) is in contact with the inner part of the clamping hole (43).

4. The automatic feeding device of the color case printing machine according to claim 1, characterized in that, The feeding mechanism (5) comprises a bottom plate (51), the bottom end of the bottom plate (51) is fixedly connected to the ground, the bottom end of the printing machine (2) is fixedly connected to the ground, the top end of the bottom plate (51) is fixedly connected with a hydraulic rod (52), the driving end of the hydraulic rod (52) is fixedly connected with a top plate (53), the top end of the top plate (53) is fixedly connected with a square shell (54), the top end of the bottom plate (51) is provided with a material blocking assembly, and the inside of the square shell (54) is provided with a material pushing assembly.

5. The automatic loading device of a color case printing machine according to claim 4, wherein, The material blocking assembly comprises a supporting block (513), the bottom end of the supporting block (513) is fixedly connected to the top left side of the bottom plate (51), the top end of the supporting block (513) is fixedly connected with an air cylinder (514), and the driving end of the air cylinder (514) is fixedly connected with a baffle (515).

6. The automatic feeding device of a color case printing machine according to claim 4, wherein The pushing assembly comprises a motor (55), the bottom of the motor (55) is fixedly connected to the inner wall of the bottom of the square shell (54), the driving end of the motor (55) is fixedly connected with a rotating rod (56), the left side of the rotating rod (56) is rotatably connected with a transmission rod (57), the left bottom end of the transmission rod (57) is rotatably connected with a sliding block (58), the bottom inner wall of the square shell (54) is fixedly connected with a guide plate (59), the inner wall of the sliding block (58) is slidably connected to the outer wall of the guide plate (59), the left side of the sliding block (58) is fixedly connected with a transmission plate (510), the outer wall of the transmission plate (510) is slidably connected to the left inner wall of the square shell (54), and the left side of the transmission plate (510) is fixedly connected with a push plate (511).

7. The automatic feeding device of a color case printing machine according to claim 4, wherein The top four corners of the bottom plate (51) are fixedly connected with guide columns (512), and the inner wall of the top plate (53) is slidably connected to the outer walls of the four guide columns (512).

8. The automatic feeding device of a color case printing machine according to claim 1, wherein, The top rear side of the conveying belt (3) is fixedly connected with a mounting block (6), the mounting block (6) is internally provided with a photoelectric sensor (7), the left and right inner walls of the mounting block (6) are respectively fixedly connected with a plurality of spring twos (8), the proximal sides of the plurality of spring twos (8) are fixedly connected with two buffer plates (9), and the proximal sides of the two buffer plates (9) are in contact with the left and right sides of the photoelectric sensor (7).

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