Automatic jet printing system
By introducing lifting components and infrared sensors into the packaging printing system, automated positioning and printing of packaging pieces of different specifications have been achieved, solving the problems of printing position offset and adaptability, and improving production efficiency and printing accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU YINHE PACKAGING CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-05-19
AI Technical Summary
Existing packaging printing systems cannot flexibly adjust the distance between the printhead and the package, resulting in offset printing position or ink droplet diffusion. They are also difficult to adapt to the needs of different package sizes, are cumbersome to operate, and have low production efficiency.
The system employs a lifting assembly, including a sleeve, a cam, and a lifting frame. The sleeve and cam are driven to rotate by a motor, adjusting the height of the carrier plate to meet different packaging needs. Combined with infrared sensors and a controller, it achieves automatic positioning and printing.
It improves printing efficiency and accuracy, simplifies the adjustment process, enhances the system's adaptability to diverse packaging, and increases production efficiency.
Smart Images
Figure CN224256318U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging printing technology, specifically an automatic printing system. Background Technology
[0002] In the packaging production field, inkjet printing technology is widely used for printing product labels, production dates, batch information, and other content. It is a key link in realizing packaging automation and informatization. With the intelligent upgrading of the manufacturing industry, the market has put forward higher requirements for the efficiency, accuracy and adaptability of packaging inkjet printing systems. The system needs to be able to quickly respond to the inkjet printing needs of different packaging sizes, while ensuring the accuracy and consistency of the inkjet printing position.
[0003] Currently, common packaging inkjet printing systems mainly consist of a conveyor mechanism, a printing mechanism, and a control unit. The conveyor mechanism typically uses a fixed-height conveyor belt or track to transport packages sequentially to the printing station. The printing mechanism usually consists of a fixed-installation printhead. After the printing parameters are set by the controller, the printhead performs the printing operation on the packages transported to the designated position. The working process is as follows: the package moves with the conveyor mechanism, and after being detected and positioned by sensors, the printhead prints on the surface of the package at a fixed height. After completion, the package is sent out by the conveyor mechanism. However, existing inkjet printing systems have obvious limitations: on the one hand, the distance between the printhead and the surface of the package cannot be flexibly adjusted for packages of different heights or sizes, which can easily lead to printing position deviation or ink droplet diffusion due to height deviation, affecting the clarity of the markings; on the other hand, the fixed-height design of traditional conveyor mechanisms is difficult to adapt to diverse packaging needs. When changing to different sizes of packages, the printhead position must be manually adjusted or equipment components must be replaced, which is cumbersome and time-consuming, resulting in low production efficiency. Therefore, we propose an automatic inkjet printing system. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an automatic inkjet printing system that uses cams of different diameters to lift the packaging to the printing area via a lifting frame and a carrier plate, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic inkjet printing system, including an inkjet printing frame, an inkjet printing assembly inside the inkjet printing frame, a conveying assembly at the rear of the inkjet printing frame, the front end of the conveying assembly passing through the middle of the inkjet printing frame, and a uniformly distributed support plate at the front end of the conveying assembly, and also including a lifting assembly.
[0006] The lifting assembly includes a sleeve, a cam, and a lifting frame. The sleeve is located at the lower middle part of the printing frame. The cams are evenly distributed on the outer arc surface of the sleeve, and the radial direction of the cam profile curve increases sequentially from left to right. An adjustable lifting frame is provided in the middle of the printing frame. The upper end of the lifting frame is configured to cooperate with the upper adjacent support plate, and the lower end of the lifting frame is configured to cooperate with the lower adjacent cam. The lifting assembly allows for flexible adjustment of the support plate lifting height to adapt to different packaging needs, improve printing efficiency and accuracy, and features a simple structure and convenient adjustment.
[0007] Furthermore, a controller is provided on the front side of the inkjet printer, and the input terminal of the controller is electrically connected to an external power supply for stable control.
[0008] Furthermore, the lifting assembly also includes a rotating shaft, threaded holes, mounting holes, and rotating frames. The rotating frames are respectively located at the lower ends of the rods at the left and right ends of the middle of the printing frame. The rotating shaft is rotatably connected between the two rotating frames. The sleeve is slidably connected to the outer arc surface of the rotating shaft. The threaded holes are evenly opened in the middle of the rotating shaft. The mounting holes symmetrically opened at the front end of the outer arc surface of the sleeve are all threaded with bolts. The rear ends of the bolts are threadedly connected to the adjacent threaded holes on the rear side, driving the sleeve to rotate and adjusting the position of the sleeve.
[0009] Furthermore, the lifting assembly also includes a motor, which is installed on the right side of the right end rod in the middle of the inkjet printer. The output shaft of the motor is fixedly connected to the center of the right end face of the rotating shaft, and the input end of the motor is electrically connected to the output end of the controller for stable driving.
[0010] Furthermore, the lifting assembly also includes a sliding frame, which is connected to the middle of the rods located at the front and rear ends of the printing frame. The lifting frame is slidably connected between the adjacent sliding frames to provide sliding support for the lifting frame.
[0011] Furthermore, the conveying assembly is a ring track conveyor belt, which is located on the rear side of the inkjet printer. The input end of the ring track conveyor belt is electrically connected to the output end of the controller. The upper side of the front slide of the ring track conveyor belt is provided with evenly distributed sliding columns. The carrying trays are slidably connected between the outer arc surfaces of the sliding columns located on the same upper side of the slide, for conveying the packaging carrying trays.
[0012] Furthermore, the printing assembly is a voltage-type inkjet head, which is located at the upper middle part of the printing frame. An ink tank is provided on the upper side of the printing frame. The ink tank and the voltage-type inkjet head are connected in series via an ink tube. An ink pump is connected in series at the upper end of the ink tube. The ink pump and the input end of the voltage-type inkjet head are both electrically connected to the output end of the controller for printing.
[0013] Furthermore, an infrared sensor is provided on the upper side of the front end rod of the middle part of the inkjet printer. The infrared sensor is bidirectionally electrically connected to the controller and is configured in conjunction with the adjacent carrier plate on the rear side to detect whether the carrier plate is transported to the inkjet printing area.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This automatic inkjet printing system has the following advantages:
[0015] The lifting assembly uses a motor-driven shaft to rotate the sleeve and cam. Utilizing the characteristics of the cam profile curve, the lifting frame lifts the carrier plate along the sliding column to the set printing height. The lifting frame can be raised by selecting cams with different radial diameters, flexibly adjusting the lifting height to adapt to different packaging needs, improving printing efficiency and accuracy. At the same time, the structure is simple and easy to adjust, enhancing the system's adaptability to diverse packaging. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the rear structure of this utility model;
[0018] Figure 3 This is an enlarged structural diagram of point A of this utility model;
[0019] Figure 4 This is a partial structural schematic diagram of the lifting component of this utility model;
[0020] Figure 5 This is a structural schematic diagram on the right side of the present invention.
[0021] In the diagram: 1. Printing frame, 2. Lifting assembly, 21. Sleeve, 22. Cam, 23. Rotary shaft, 24. Threaded hole, 25. Mounting hole, 26. Lifting frame, 27. Sliding frame, 28. Rotating frame, 29. Motor, 3. Circular track conveyor belt, 4. Sliding column, 5. Bearing plate, 6. Ink tank, 7. Ink tube, 8. Ink pump, 9. Voltage-type inkjet head, 10. Infrared sensor, 11. Controller. Detailed Implementation
[0022] 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.
[0023] Please see Figure 1-5This embodiment provides a technical solution: an automatic inkjet printing system, including a printhead 1, a controller 11 on the front side of the printhead 1, the input terminal of the controller 11 being electrically connected to an external power supply, and a printhead assembly inside the printhead 1, the printhead assembly being a voltage-type inkjet head 9, the voltage-type inkjet head 9 being disposed at the upper middle part of the printhead 1, the voltage-type inkjet head 9 being a traditional voltage-type inkjet head, which mainly consists of a piezoelectric crystal driving module (including a piezoelectric crystal, an electrode layer, and a driving circuit) and an ink chamber and nozzle module (…). The inkjet printer 1 consists of an ink chamber, a nozzle plate, and an ink inlet. An ink tank 6 is located on the upper side of the inkjet printer 1. The ink tank 6 and the voltage-type inkjet head 9 are connected in series via an ink tube 7. An ink pump 8 is connected in series at the upper end of the ink tube 7. The input terminals of the ink pump 8 and the voltage-type inkjet head 9 are both electrically connected to the output terminal of the controller 11. A conveyor assembly is located on the rear side of the inkjet printer 1. The front end of the conveyor assembly passes through the middle of the inkjet printer 1. Evenly distributed support plates 5 are fitted at the front end of the conveyor assembly. The conveyor assembly is a circular track conveyor belt 3. The conveyor belt 3 is a traditional circular track conveyor belt, which is mainly composed of a frame module (such as an aluminum profile frame or profile base plate, used to install and fix the guide rail), a guide rail module (including linear guide rail, arc guide rail and slide block, to achieve precise guidance and load bearing), a transmission module (synchronous belt or chain connects the slide block and the drive device to transmit power) and a power module (servo motor and reducer provide power to control the movement of the slide block). The circular track conveyor belt 3 is set on the rear side of the inkjet frame 1. The input end of the circular track conveyor belt 3 is electrically connected to the output end of the controller 11. The upper side of the slide block at the front end of the circular track conveyor belt 3 is provided with evenly distributed sliding columns 4. The bearing plates 5 are all slidably connected between the outer arc surfaces of the sliding columns 4 located on the same slide block. The upper side of the middle front end rod of the inkjet frame 1 is provided with an infrared sensor 10 (the position of the infrared sensor 10 corresponds to the front and rear of the voltage inkjet head 9). The infrared sensor 10 is bidirectionally electrically connected to the controller 11. The infrared sensor 10 is set in cooperation with the adjacent bearing plate 5 at the rear. It also includes a lifting component 2.
[0024] Lifting assembly 2: It includes a sleeve 21, a cam 22, and a lifting frame 26. The sleeve 21 is located at the lower middle part of the inkjet frame 1. The cam 22 is evenly distributed on the outer arc surface of the sleeve 21. The radial direction of the cam 22 profile curve increases sequentially from left to right. An adjustable lifting frame 26 is provided in the middle of the inkjet frame 1. The lifting assembly 2 also includes a sliding frame 27. The sliding frames 27 are all connected to the middle of the rods located at the front and rear ends of the middle part of the inkjet frame 1. The lifting frame 26 is slidably connected between the front and rear adjacent sliding frames 27 (a spring can be provided between the lower side of the lifting frame 26 and the upper side of the sliding frame 27. The spring is sleeved on the outer arc surface of the cylinder of the lifting frame 26. The elastic potential energy of the spring ensures the accurate reset of the lifting frame 26). The upper end of the lifting frame 26 cooperates with the upper adjacent bearing plate 5. The lifting assembly 2 is configured such that the lower end of the lifting frame 26 engages with the adjacent cam 22 on the lower side. The lifting assembly 2 also includes a rotating shaft 23, threaded holes 24, mounting holes 25, and rotating frames 28. The rotating frames 28 are respectively located at the lower ends of the rods at the left and right ends of the middle of the inkjet printer 1. The rotating shaft 23 is rotatably connected between the two rotating frames 28. The sleeve 21 is slidably connected to the outer arc surface of the rotating shaft 23 (wherein, the sliding relationship is such that the outer arc surface of the rotating shaft 23 has ribs, and the inner arc surface of the sleeve 21 has rib grooves, which are slidably connected to the ribs). Threaded holes 24 are evenly distributed in the middle of the rotating shaft 23. Bolts are threaded into the mounting holes 25 symmetrically distributed at the front end of the outer arc surface of the sleeve 21, and the rear ends of the bolts are threaded into the adjacent threaded holes 24 on the rear side. The lifting assembly 2 also includes a motor 2. 9. Motor 29 is installed on the right side of the right end rod in the middle of the inkjet printer 1. The output shaft of motor 29 is fixedly connected to the center of the right end face of the rotating shaft 23. The input end of motor 29 is electrically connected to the output end of controller 11. After the packaged item is placed in the carrier tray 5, the circular track conveyor belt 3 continuously transports the carrier tray 5 under the control of controller 11. When the infrared sensor 10 detects that the carrier tray 5 is transported to directly below the voltage inkjet head 9 (specifically, the infrared sensor 10 emits an infrared beam, and when the carrier tray 5 is transported forward with the circular track conveyor belt 3 to directly below the voltage inkjet head 9, the carrier tray 5 enters the detection area of the infrared sensor 10, blocking or reflecting the infrared beam. The receiving end inside the infrared sensor 10 triggers a signal output due to the change in the light signal, and the detection... The signal is transmitted to the controller 11 (to detect the position of the carrier plate 5), and the signal is fed back to the controller 11. The controller 11 then controls the circular track conveyor belt 3 to stop running. At this time, the controller 11 controls the motor 29 to run. The output shaft of the motor 29 drives the rotating shaft 23. When the rotating shaft 23 rotates, it drives the sleeve 21 to rotate synchronously. At this time, the cam 22 located at the lower end of the lifting frame 26 rotates with the sleeve 21. The convex contour of the cam 22 pushes the lower end of the lifting frame 26, so that the lifting frame 26 moves smoothly upward in the vertical direction under the limiting and guiding action of the front and rear sliding frames 27. The upper front and rear ends of the lifting frame 26 contact the lower front and rear ends of the carrier plate 5, thereby lifting the carrier plate 5 along the sliding column 4 of the slide block to the set printing height below the voltage inkjet head 9.The height of the lifting frame 26 for raising the carrier plate 5 can be adjusted according to different packaging requirements. By loosening the bolts in the mounting holes 25, the fixed state between the sleeve 21 and the rotating shaft 23 is released. According to actual printing needs, the sleeve 21 is slid along the rotating shaft 23 to a suitable position (for example, when a higher height of the carrier plate 5 is required, the sleeve 21 is slid along the rotating shaft 23 so that the cam 22 with a larger radial profile is located at the lower end of the lifting frame 26). Then, the rear end of the bolt is screwed into the corresponding threaded hole 24 for fixation, thereby selecting the cam 22 that mates with the lower end of the lifting frame 26. Next, the controller 11 controls the ink pump 8 and the voltage-type inkjet head 9 to operate, and the ink in the ink tank 6... Ink is pumped by ink pump 8 through ink tube 7 and printed onto the packaging on carrier tray 5 via voltage-type inkjet head 9. After printing, controller 11 controls motor 29 to rotate in reverse, cam 22 rotates to its initial position, and lifting frame 26 resets under its own weight (if a spring is installed, its elastic potential energy can assist in resetting the lifting frame 26). Carrier tray 5 falls onto slide column 4 of the circular track conveyor belt 3. Subsequently, controller 11 controls the circular track conveyor belt 3 to start again, conveying the printed carrier tray 5 out. At the same time, subsequent carrier trays 5 enter the printing station in sequence, completing the automatic printing process in a cycle, realizing automatic packaging delivery, positioning, and printing.
[0025] The working principle of the automatic inkjet printing system provided by this utility model is as follows: After the packaged goods are placed in the carrier tray 5, the circular track conveyor belt 3 continuously transports the carrier tray 5 under the control of the controller 11. When the infrared sensor 10 detects that the carrier tray 5 is transported to directly below the voltage-type inkjet head 9 (specifically, the infrared sensor 10 emits an infrared beam, and when the carrier tray 5 is transported forward with the circular track conveyor belt 3 to directly below the voltage-type inkjet head 9, the carrier tray 5 enters the detection area of the infrared sensor 10, blocking or reflecting the infrared beam. The receiving end inside the infrared sensor 10 triggers a signal output due to the change in the light signal, transmitting the detection signal to the controller 11, thereby realizing... The detection of the position of the bearing plate 5 will send a signal to the controller 11. The controller 11 will then control the circular track conveyor belt 3 to stop running. At this time, the controller 11 will operate the motor 29. The output shaft of the motor 29 will drive the rotating shaft 23. When the rotating shaft 23 rotates, it will drive the sleeve 21 to rotate synchronously. At this time, the cam 22 located at the lower end of the lifting frame 26 will rotate with the sleeve 21. The convex contour of the cam 22 will push the lower end of the lifting frame 26, so that the lifting frame 26 will move smoothly upward in the vertical direction under the limiting and guiding action of the front and rear sliding frames 27. The upper front and rear ends of the lifting frame 26 will contact the lower front and rear ends of the bearing plate 5, thereby lifting the bearing plate 5 along the sliding column 4 of the slide block. The printing height is set below the voltage-type inkjet head 9. The height of the lifting frame 26 raising the carrier plate 5 can be adjusted according to different packaging requirements. By loosening the bolts in the mounting hole 25, the fixed state between the sleeve 21 and the rotating shaft 23 is released. According to actual printing needs, the sleeve 21 is slid along the rotating shaft 23 to a suitable position (for example, when a higher height of the carrier plate 5 is required, the sleeve 21 is slid along the rotating shaft 23 so that the cam 22 with a larger radial profile is located at the lower end of the lifting frame 26). Then, the rear end of the bolt is screwed into the corresponding threaded hole 24 for fixation, thereby selecting the cam 22 that mates with the lower end of the lifting frame 26. Next, the controller 11 controls the ink pump. 8 and the voltage-type inkjet head 9 work together. The ink in the ink tank 6 is pumped by the ink pump 8 through the ink tube 7 and printed on the packaging on the carrier tray 5 by the voltage-type inkjet head 9. After printing is completed, the controller 11 controls the motor 29 to rotate in the reverse direction, the cam 22 rotates to the initial position, and the lifting frame 26 resets under its own gravity (if a spring is set, the elastic potential energy of the spring can assist the lifting frame 26 to reset). The carrier tray 5 falls onto the slide column 4 of the circular track conveyor belt 3. Then, the controller 11 controls the circular track conveyor belt 3 to start again, and transports the printed carrier tray 5 out. At the same time, subsequent carrier trays 5 enter the printing station in sequence, and the automatic printing process is completed in a cycle.
[0026] It is worth noting that the motor 29 disclosed in the above embodiments can be a MI NASA6 series servo motor, the circular track conveyor belt 3 can be a DryLin circular guide rail conveyor system, the ink pump 8 can be a Gamma / Delta series, the voltage inkjet head 9 can be a traditional voltage printhead, the infrared sensor 10 can be an E3Z-L series diffuse reflection infrared sensor, and the controller 11 can be an S7-1200 series PLC controller. The controller 11 controls the operation using methods commonly used in the prior art.
[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An automatic inkjet printing system, comprising an inkjet printer (1), wherein an inkjet printing assembly is provided inside the inkjet printer (1), and a conveying assembly is provided at the rear side of the inkjet printer (1), the front end of the conveying assembly passing through the middle of the inkjet printer (1), and a uniformly distributed carrier plate (5) is provided at the front end of the conveying assembly, characterized in that: It also includes a lifting component (2); Lifting assembly (2): It includes a sleeve (21), a cam (22) and a lifting frame (26). The sleeve (21) is located at the lower middle part of the inkjet printer (1). The cam (22) is evenly distributed on the outer arc surface of the sleeve (21). The radial direction of the profile curve of the cam (22) increases sequentially from left to right. An adjustable lifting frame (26) is provided in the middle of the inkjet printer (1). The upper end of the lifting frame (26) is configured to cooperate with the upper adjacent bearing plate (5). The lower end of the lifting frame (26) is configured to cooperate with the lower adjacent cam (22).
2. The automatic inkjet printing system according to claim 1, characterized in that: The front side of the inkjet printer (1) is provided with a controller (11), and the input terminal of the controller (11) is electrically connected to an external power source.
3. An automatic inkjet printing system according to claim 2, characterized in that: The lifting assembly (2) also includes a rotating shaft (23), a threaded hole (24), a mounting hole (25), and a rotating frame (28). The rotating frame (28) is respectively located at the lower ends of the rods at the left and right ends of the middle part of the inkjet printer (1). The rotating shaft (23) is rotatably connected between the two rotating frames (28). The sleeve (21) is slidably connected to the outer arc surface of the rotating shaft (23). The threaded holes (24) are evenly opened in the middle part of the rotating shaft (23). The mounting holes (25) symmetrically opened at the front end of the outer arc surface of the sleeve (21) are all threaded with bolts. The rear ends of the bolts are threadedly connected to the adjacent threaded holes (24) on the rear side.
4. An automatic inkjet printing system according to claim 3, characterized in that: The lifting assembly (2) also includes a motor (29), which is installed on the right side of the right end of the middle part of the inkjet printer (1). The output shaft of the motor (29) is fixedly connected to the center of the right end of the rotating shaft (23), and the input end of the motor (29) is electrically connected to the output end of the controller (11).
5. An automatic inkjet printing system according to claim 1, characterized in that: The lifting assembly (2) also includes a sliding frame (27), which is connected to the middle of the rods located at the front and rear ends of the printing frame (1). The lifting frame (26) is slidably connected between the adjacent sliding frames (27).
6. An automatic inkjet printing system according to claim 2, characterized in that: The conveying assembly is a ring track conveyor belt (3), which is located on the rear side of the inkjet printer (1). The input end of the ring track conveyor belt (3) is electrically connected to the output end of the controller (11). The upper side of the slide at the front end of the ring track conveyor belt (3) is provided with evenly distributed sliding columns (4). The bearing plate (5) is slidably connected between the outer arc surfaces of the sliding columns (4) located on the same upper side of the slide.
7. An automatic inkjet printing system according to claim 2, characterized in that: The printing assembly is a voltage-type inkjet head (9), which is located at the upper middle part of the printing frame (1). The upper side of the printing frame (1) is provided with an ink tank (6). The ink tank (6) and the voltage-type inkjet head (9) are connected in series through an ink tube (7). An ink pump (8) is connected in series at the upper end of the ink tube (7). The ink pump (8) and the input end of the voltage-type inkjet head (9) are both electrically connected to the output end of the controller (11).
8. An automatic inkjet printing system according to claim 2, characterized in that: An infrared sensor (10) is provided on the upper side of the front end rod of the middle part of the inkjet printer (1). The infrared sensor (10) is bidirectionally electrically connected to the controller (11). The infrared sensor (10) is also configured in conjunction with the adjacent support plate (5) on the rear side.