Packaging bag processing ink-jet printer

Abstract

The utility model discloses a packaging bag processing ink-jet printer which comprises a bottom frame and two symmetrical right-angle frames fixed to the outer wall of one side of the bottom frame in a bolted mode, an unwinding roller is rotationally installed between the two right-angle frames, and a U-shaped frame is fixed to the top end of the bottom frame. A polyurethane rubber-coated rubber roller and a winding roller are rotationally installed at the two ends of the interior of the U-shaped frame respectively, and a bag guiding frame allowing packaging bag roll materials to penetrate out is fixed to the portion, between the polyurethane rubber-coated rubber roller and the winding roller, of the interior of the U-shaped frame. According to the utility model, the right-angle frame, the unwinding roller, the U-shaped frame, the winding roller, the belt wheel driving unit, the bag guiding frame, the distance adjusting type rolling limiting structure and the like are matched with one another, so that a worker can effectively improve the accuracy of the code spraying process, and the phenomenon of unclear code spraying caused by tension fluctuation and conveying amplitude can be effectively avoided through careful adjustment and accurate control.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag processing technology, specifically a packaging bag processing inkjet printer. Background Technology

[0002] Inkjet printers play a crucial role in the production of packaging bags. Their main functions include printing production dates, batch numbers, expiration dates, barcodes, QR codes, brand logos, promotional information, and anti-counterfeiting labels. Inkjet printers enable efficient and accurate marking on packaging bags, improving product management efficiency, logistics tracking, and brand promotion. Furthermore, the high efficiency of inkjet printers allows for uninterrupted marking during mass production without affecting production speed. The structure of an inkjet printer consists of a printhead, ink system, control system, transmission system, and cleaning system. The printhead is responsible for accurately jetting ink onto the packaging bag surface, the ink system ensures a stable ink supply, the control system manages overall operation, the transmission system coordinates the equipment's operating speed, and the cleaning system ensures the printhead functions properly. Its working principle is based on inkjet technology, using an electronic control system to precisely control the printhead's jet volume and frequency, ensuring that the ink forms clear text, graphics, or barcodes on the packaging bag surface. In addition, inkjet printers ensure the durability of printed content through drying or curing methods and work synchronously with the production line to ensure precise alignment between the inkjet printer and the packaging bag. Currently, during the inkjet printing process, due to factors such as conveyor belt fluctuations, unstable tension of the roll material itself, or insufficient equipment precision, the relative position between the inkjet printer and the packaging bag constantly changes. This fluctuation in amplitude causes the ink ejected by the printhead to fail to align precisely with the surface of the packaging bag, resulting in repetition or blurring of text, graphics, or barcodes on the packaging bag surface, a phenomenon known as ghosting. This problem not only affects the clarity and readability of the inkjet printing but may also lead to traceability issues in the production process, especially in applications requiring barcodes or QR codes, potentially causing scanning errors or unreadable codes. Utility Model Content

[0003] The purpose of this invention is to provide a packaging bag coding machine, in which a take-up roller is installed in a U-shaped frame, and above the take-up roller is a guide frame for guiding the movement of the packaging bag roll. During the winding process of the packaging bag roll, an adjustable-gap rolling limit structure adjusts the gap inside the guide frame for the movement of the packaging bag roll, and the roll is limited by the adjustable-gap rolling limit structure during the winding stage. In this way, during the coding process of the packaging bag roll at the coding station, the amplitude caused by the winding and tension of the packaging bag roll is actively suppressed, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a packaging bag processing inkjet printer, comprising a base frame and two symmetrical right-angle frames bolted to one side of the outer wall of the base frame, a unwinding roller rotatably mounted between the two right-angle frames, a U-shaped frame fixed to the top of the base frame, and polyurethane-coated rollers and take-up rollers rotatably mounted at both ends inside the U-shaped frame, respectively, a bag guide frame for the packaging bag roll material to pass through fixed inside the U-shaped frame between the polyurethane-coated rollers and the take-up rollers, a rectangular window portion provided on the outer wall of the bag guide frame away from the unwinding roller, an adjustable rolling limit structure for controlling the internal gap of the bag guide frame provided on the outer wall of the bag guide frame near the unwinding roller, a rotary drive unit for driving the unwinding roller and take-up roller to rotate provided on one side of the outer wall of the U-shaped frame, an adjustment frame provided at the top of the base frame on one side of the U-shaped frame, and an inkjet header mounted at the top of the adjustment frame.

[0005] Preferably, both ends of the polyurethane coated roller surface are fixed with baffles, and the top of the bag guide frame is provided with a downwardly extending rectangular notch, the width of which is greater than the thickness of the baffle.

[0006] Preferably, the bag guide frame has an internal cavity for the packaging bag roll to pass through, and the bag guide frame is made of stainless steel.

[0007] Preferably, the rotary drive unit consists of a servo motor mounted on the outer wall of one side of the U-shaped frame and synchronous pulleys fixed at the same end of the unwinding roller and the winding roller, with a multi-wedge belt wound between the two synchronous pulleys.

[0008] Preferably, the adjustable rolling limiting structure includes a nut pair fixed on one inner wall of the bag guide frame, a screw threaded in the nut pair, and bearing seats slidably installed on the inner walls of both sides of the bag guide frame. One end of the screw thread is rotatably engaged with one outer wall of the bearing seat, and a rubber roller is rotatably installed between the two bearing seats.

[0009] Preferably, a tensioning unit is provided at the top of the bottom frame below the take-up roller. The tensioning unit includes a cylinder installed on one side of the top of the bottom frame and a U-shaped roller frame slidably installed inside one end of the U-shaped frame. A rubber roller is rotatably installed inside the U-shaped roller frame. The top of the piston rod of the cylinder is fixedly connected to the bottom end of the U-shaped roller frame.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This packaging bag processing inkjet printer, through the coordinated structure of a right-angle frame, unwinding roller, U-shaped frame, rewinding roller, pulley drive unit, bag guide frame, and adjustable-distance rolling limit structure, allows workers to effectively ensure the accuracy of the coding process. Through meticulous adjustment and precise control, it can effectively avoid unclear coding caused by tension fluctuations and conveying amplitude, thereby improving coding quality and ensuring the accuracy of production information.

[0011] The take-up roller is responsible for winding up the packaging bag roll, enabling the production line to handle the roll stably during operation. The bag guide frame ensures that the packaging bag roll passes smoothly during transportation, avoiding interference caused by violent movement or tension fluctuations. The introduction of an adjustable-gap rolling limit structure allows for flexible adjustment of the gap of the bag guide frame, while effectively controlling the tension of the packaging bag roll and ensuring a stable relative position between it and the inkjet printing terminal during the coding process. This avoids unclear coding or ghosting caused by tension fluctuations. Its precise control keeps the distance between the inkjet printing terminal and the surface of the packaging bag constant, ensuring that the ink is accurately sprayed onto the surface of the packaging bag, guaranteeing the clarity and accuracy of the coding. Especially when barcodes, QR codes, and other information need to be printed, it can effectively avoid scanning errors and improve product traceability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the upper and lower isometric isometric solid structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 .

[0017] In the diagram: 1. Base frame; 2. Right-angle frame; 3. Unwinding roller; 4. U-shaped frame; 5. Rewinding roller; 6. Rotary drive unit; 7. Polyurethane coated roller; 701. Baffle plate; 8. Tensioning unit; 9. Bag guide frame; 901. Hollow cavity; 902. Rectangular window section; 10. Adjustable rolling limit structure; 11. Adjusting frame; 12. Spraying dock. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figure 1-5The present invention provides an embodiment of a packaging bag processing inkjet printer, comprising a base frame 1 and two symmetrical right-angle frames 2 bolted to the outer wall of one side of the base frame 1. A unwinding roller 3 is rotatably installed between the two right-angle frames 2. A U-shaped frame 4 is fixed at the top of the base frame 1, and polyurethane coated roller 7 and a take-up roller 5 are rotatably installed at both ends inside the U-shaped frame 4. A bag guide frame 9 for the packaging bag roll material to pass through is fixed inside the U-shaped frame 4 between the polyurethane coated roller 7 and the take-up roller 5. The unwinding roller 3 is used to unwind the packaging bag roll material to ensure that the roll material can smoothly enter the polyurethane coated roller 7, the bag guide frame 9 and the take-up roller 5.

[0020] A rectangular window 902 is provided on the outer wall of the bag guide frame 9 away from the unwinding roller 3. An adjustable rolling limit structure 10 for controlling the internal gap of the bag guide frame 9 is provided on the outer wall of the bag guide frame 9 near the unwinding roller 3. A rotary drive unit 6 for driving the unwinding roller 3 and the take-up roller 5 to rotate is provided on the outer wall of one side of the U-shaped frame 4. An adjustment frame 11 is provided at the top of the bottom frame 1 on one side of the U-shaped frame 4, and a spray nozzle 12 is installed at the top of the adjustment frame 11.

[0021] The bag guide frame 9 guides the packaging bag roll material to move smoothly along a predetermined path. It is located above the take-up roller 5, and the internal gap of the bag guide frame 9 is adjusted by the adjustable gap rolling limit structure 10 to ensure that the roll material is not affected by excessive tension fluctuations during transportation.

[0022] When the packaging bag roll is being fitted onto the unwinding roller 3, the operator can remove a right-angle bracket 2 to expose one end of the unwinding roller 3 for the packaging bag roll to be fitted.

[0023] Both ends of the polyurethane coated roller 7 are fixed with baffles 701. The top of the bag guide frame 9 is provided with a rectangular notch extending downward. The width of the rectangular notch is greater than the thickness of the baffle 701. The inside of the bag guide frame 9 is provided with a hollow cavity 901 for the packaging bag roll to pass through. The bag guide frame 9 is made of stainless steel.

[0024] The rotary drive unit 6 consists of a servo motor mounted on the outer wall of one side of the U-shaped frame 4 and synchronous wheels fixed at the same end of the unwinding roller 3 and the take-up roller 5. A multi-wedge belt is wound between the two synchronous wheels. The cooperation between the unwinding roller 3 and the rotary drive unit 6 can ensure that the roll material is rolled evenly and reduce instability caused by changes in the tension of the roll material.

[0025] The adjustable rolling limit structure 10 includes a nut pair fixed on one side of the inner wall of the bag frame 9, a screw threaded in the nut pair, and bearing seats slidably installed on both sides of the inner wall of the bag frame 9. One end of the screw thread is rotatably engaged with one side of the outer wall of the bearing seat, and a rubber roller is rotatably installed between the two bearing seats.

[0026] By rotating the lead screw, the operator moves the bearing seat and the second rubber roller toward the rectangular window 902 to adjust the gap between the second rubber roller and the inner wall of the bag guide frame 9. At this time, the roll material passes through this point. By adjusting the gap of the bag guide frame 9, the tension of the roll material is precisely controlled to avoid unstable conveying caused by excessive tension fluctuations.

[0027] A tensioning unit 8 is provided at the top of the bottom frame 1 below the winding roller 5. The tensioning unit 8 includes a cylinder installed on one side of the top of the bottom frame 1 and a U-shaped roller frame that is slidably installed inside one end of the U-shaped frame 4. A rubber roller is rotatably installed inside the U-shaped roller frame, and the top of the piston rod of the cylinder is fixedly connected to the bottom end of the U-shaped roller frame.

[0028] During the rotation of the unwinding roller 3 and the winding roller 5 by the rotary drive unit 6, the operator activates the cylinder in the tensioning unit 8 to move the U-shaped roller frame upward until the rubber roller installed inside the U-shaped roller frame comes into contact with the packaging bag roll material during the winding process, so that the rolled material can be further limited and tightened.

[0029] In this embodiment, the operator first places the packaging bag roll to be printed onto the unwinding roller 3, and then passes one end of the packaging bag roll around the upper surface of the polyurethane-coated roller 7 and into the bag guide frame 9, so that the end of the packaging bag roll passes through the hollow cavity 901 and finally winds onto the take-up roller 5. At this time, the packaging bag roll has been smoothly unwound by the unwinding roller 3, and the tension of the roll is moderate, avoiding excessive tension or slack. Then, the operator checks whether the ink on the inkjet terminal 12 is sufficient and clean, and adjusts the printing angle and position of the inkjet terminal 12 through the adjusting frame 11 until the printing part of the inkjet terminal 12 is aligned with the rectangular window 902. The packaging bag roll area at the rectangular window 902 is the printing area. Then, the operator needs to adjust the packaging bag in the bag guide frame 9. The gap between the roll of packaging material and the printing plate is controlled by the adjustable rolling limit structure 10. At this time, the bag guide frame 9 ensures that the roll passes through smoothly and guides it to the printing position. The adjustable rolling limit structure 10 adjusts the gap to prevent the packaging roll from being misaligned due to excessive tension fluctuations, which would affect the printing accuracy of the printing plate. After all components are adjusted, the operator starts the rotary drive unit 6. The rotary drive unit 6 drives the unwinding roller 3 and the take-up roller 5 to rotate in the same direction and synchronously. The packaging roll on the unwinding roller 3 is gradually wound by the take-up roller 5. When the packaging roll passes through the rectangular window 902, the printing plate 12 prints the packaging bag according to the preset program, accurately printing information such as production date, batch number, and barcode onto the surface of the packaging bag.

Claims

1. A packaging bag printing inkjet printer, characterized in that: The package includes a base frame (1) and two symmetrical right-angle frames (2) bolted to the outer wall of one side of the base frame (1). A unwinding roller (3) is rotatably installed between the two right-angle frames (2). A U-shaped frame (4) is fixed to the top of the base frame (1), and polyurethane coated roller (7) and a take-up roller (5) are rotatably installed at both ends inside the U-shaped frame (4). A bag guide frame (9) for the packaging bag roll to pass through is fixed inside the U-shaped frame (4) between the polyurethane coated roller (7) and the take-up roller (5). The bag guide frame (9) is away from the unwinding roller. A rectangular window (902) is provided on one side of the outer wall of the roll (3). An adjustable rolling limit structure (10) for controlling the internal gap of the bag guide frame (9) is provided on the outer wall of the bag guide frame (9) near the unwind roll (3). A rotary drive unit (6) for driving the unwind roll (3) and the take-up roll (5) is provided on one side of the outer wall of the U-shaped frame (4). An adjustment frame (11) is provided at the top of the bottom frame (1) on one side of the U-shaped frame (4), and a spray nozzle (12) is installed at the top of the adjustment frame (11).

2. The packaging bag processing inkjet printer according to claim 1, characterized in that: Both ends of the surface of the polyurethane coated roller (7) are fixed with baffles (701), and the top of the bag guide frame (9) is provided with a rectangular notch extending downward, the width of which is greater than the thickness of the baffle (701).

3. The packaging bag processing inkjet printer according to claim 2, characterized in that: The bag guide frame (9) has a hollow cavity (901) inside for the packaging bag roll to pass through, and the bag guide frame (9) is made of stainless steel.

4. The packaging bag processing inkjet printer according to claim 1, characterized in that: The rotary drive unit (6) consists of a servo motor mounted on the outer wall of one side of the U-shaped frame (4) and synchronous wheels fixed at the same end of the unwinding roller (3) and the winding roller (5), with a multi-wedge belt wound between the two synchronous wheels.

5. A packaging bag processing inkjet printer according to claim 3, characterized in that: The adjustable rolling limit structure (10) includes a nut pair fixed on one side of the inner wall of the bag frame (9), a screw threaded in the nut pair, and bearing seats slidably installed on both sides of the inner wall of the bag frame (9). One end of the screw thread is rotatably engaged with one side of the outer wall of the bearing seat, and a rubber roller is rotatably installed between the two bearing seats.

6. A packaging bag processing inkjet printer according to claim 1, characterized in that: A tensioning unit (8) is provided at the top of the bottom frame (1) below the winding roller (5). The tensioning unit (8) includes a cylinder installed on one side of the top of the bottom frame (1) and a U-shaped roller frame slidably installed at one end inside the U-shaped frame (4). A rubber roller is rotatably installed inside the U-shaped roller frame. The top of the piston rod of the cylinder is fixedly connected to the bottom end of the U-shaped roller frame.

Images