Convex plate printing machine for hand bag printing
By introducing adjustment and ink supply components into the tote bag printing machine, automatic adjustment and leveling of the printing plate and the tote bag are achieved, solving the printing problem of traditional equipment when the thickness varies, and improving printing quality and efficiency.
Patent Information
- Application Number
- CN202520015000.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2035-01-06
AI Technical Summary
Traditional shopping bag printing equipment cannot automatically adjust the pressure and fit between the printing plate and the shopping bag, which affects printing quality and efficiency. In particular, when the thickness changes, problems such as blurred printed patterns, uneven ink penetration, or no ink can be printed are likely to occur.
The system employs adjustment and ink supply components, including slide columns, sliders, springs, printing rollers, and cylinders. Through the elasticity of the springs and the pushing of the cylinders, the printing plate and the shopping bag are automatically adjusted and leveled, ensuring uniform pressure and proper fit, thus solving the adaptability problem of printing equipment.
It improves the applicability and flexibility of the printing press, ensures printing quality and efficiency on shopping bags of different thicknesses, reduces scrap rates, and enhances production stability and consistency.
Smart Images
Figure CN223507885U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of letterpress printing machine technology, and in particular to a letterpress printing machine for printing tote bags. Background Technology
[0002] In the packaging and printing industry, shopping bags are a common advertising and packaging medium, and their printing quality and efficiency are of paramount importance. With the diversification and personalization of market demands, the materials and thicknesses of shopping bags are also showing a wide range of variations. The letterpress printing machine for shopping bag printing is designed to meet the printing needs of shopping bags of different thicknesses. Through innovative mechanical structure design, it can flexibly adapt to shopping bags of various thicknesses while ensuring printing accuracy, providing shopping bag printing companies with efficient, stable and multifunctional printing solutions, improving the flexibility and adaptability of printing production, and meeting the ever-changing market's stringent requirements for shopping bag printing.
[0003] Traditional printing equipment for shopping bags commonly includes flatbed printing presses and some simple letterpress printing presses. Flatbed printing presses mainly work by fixing the printing plate on a flat plate and then using pressure to transfer ink from the printing plate to the surface of the shopping bag. Simple letterpress printing presses usually use a relatively fixed mechanical structure, and the distance between the printing plate and the printing roller has a limited range of adjustment.
[0004] However, traditional tote bag printing equipment struggles to effectively print on tote bags of varying thicknesses. When the tote bag thickness changes, traditional printing equipment cannot automatically adjust the pressure and fit between the printing plate and the tote bag, easily leading to blurred printed patterns, uneven ink penetration, or even no ink at all. This severely impacts printing quality and production efficiency, increasing production costs and scrap rates. Therefore, a letterpress printing machine for tote bag printing is proposed to address these issues. Summary of the Invention
[0005] To overcome the above shortcomings, this utility model provides a letterpress printing machine for printing tote bags, which aims to improve the problem in the prior art that traditional printing equipment cannot automatically adjust the pressure and adhesion between the printing plate and the tote bag when the thickness of the tote bag changes.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A letterpress printing machine for printing tote bags includes a machine body, a motor fixedly connected to one side of the machine body, a conveyor roller fixedly connected to the output end of the motor, a gear fixedly connected to one end of the conveyor roller, a fixed plate fixedly connected to the top of the machine body, an adjustment component and an ink supply component disposed inside the fixed plate.
[0008] The adjusting assembly includes a sliding column, which is slidably connected inside the fixed plate. A slider is fixedly connected to the bottom end of the sliding column, and the slider is slidably connected inside the fixed plate. A spring is sleeved on the outer wall of the sliding column, and the two ends of the spring are fixedly connected to the fixed plate and the slider, respectively. A rotating shaft is rotatably connected inside the slider. A gear is fixedly connected to the outer wall of the rotating shaft, and the gear meshes with the gear. A printing roller is fixedly connected to the outer wall of the rotating shaft, and a printing plate is fixedly connected to the outer wall of the printing roller.
[0009] As a further description of the above technical solution:
[0010] The ink supply assembly includes a second motor and an ink roller. One side of the second motor is fixedly connected to one side of the fixed plate, and one end of the ink roller is fixedly connected to the output end of the second motor. The ink roller is in contact with the printing plate.
[0011] As a further description of the above technical solution:
[0012] A feeding frame is fixedly connected to one side of the machine body, and a support frame is fixedly connected to one side of the feeding frame;
[0013] As a further description of the above technical solution:
[0014] A cylinder is fixedly connected to the top of the support frame, and a connecting block is fixedly connected to the output end of the cylinder.
[0015] As a further description of the above technical solution:
[0016] A pressure block is fixedly connected to the bottom of the connecting block, and a pressure table is fixedly connected to the top of the machine body;
[0017] As a further description of the above technical solution:
[0018] A support column is fixedly connected to the top of the support frame, and the pressure block is slidably connected to the outer wall of the support column.
[0019] As a further description of the above technical solution:
[0020] A second spring is fitted on the outer wall of the support column, and the two ends of the second spring are respectively fixedly connected to the support frame and the pressure block.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, when the printing plate contacts the shopping bag, the printing plate drives the slider to slide within the fixed plate and compress the spring. With the help of the elastic force of the spring and the sliding column, the printing plate can automatically adjust the pressure and fit between itself and the shopping bag according to the thickness of the shopping bag. This solves the problem that traditional printing equipment cannot automatically adjust the pressure and fit between the printing plate and the shopping bag when the thickness of the shopping bag changes, thereby improving the applicability of the printing machine.
[0023] 2. In this utility model, when the tote bag passes through the feed frame, the cylinder pushes the connecting block to move, causing the pressure block to slide and press down on the outer wall of the support column. When the pressure block contacts the tote bag, it squeezes the second spring. The elastic restoring force of the second spring makes the pressure block fit tightly against the tote bag, achieving the effect of effectively flattening the tote bag during printing. This solves the problem of uneven surface of the tote bag causing the printed pattern to be deformed and blurry in the traditional printing process, thereby improving the flexibility of the printing machine. Attached Figure Description
[0024] Figure 1 This is a three-dimensional schematic diagram of a letterpress printing machine for printing on tote bags according to the present invention.
[0025] Figure 2 This is a schematic diagram of the rotating shaft structure of a letterpress printing machine for printing tote bags according to the present invention.
[0026] Figure 3 This is a schematic diagram of the printing plate structure of a letterpress printing machine for printing tote bags according to this utility model;
[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;
[0028] Figure 5 This is a schematic diagram of the pressing block structure of a letterpress printing machine for printing tote bags, as proposed in this utility model.
[0029] Legend:
[0030] 1. Machine body; 2. Motor 1; 3. Conveyor roller; 4. Gear 1; 5. Fixing plate; 6. Sliding column; 7. Sliding block; 8. Spring 1; 9. Rotating shaft; 10. Gear 2; 11. Printing roller; 12. Printing plate; 13. Motor 2; 14. Ink roller; 15. Feed frame; 16. Support frame; 17. Cylinder; 18. Connecting block; 19. Pressing block; 20. Support column; 21. Spring 2; 22. Pressing table. Detailed Implementation
[0031] 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.
[0032] Reference Figures 1-4 The present invention provides an embodiment of a letterpress printing machine for printing tote bags, comprising a machine body 1. The machine body 1 serves as the main body of the equipment, providing a sturdy frame and support to ensure the stability of the equipment. A motor 2 is fixedly connected to one side of the machine body 1, and a conveyor roller 3 is fixedly connected to the output end of the motor 2. The motor 2 drives the conveyor roller 3 to rotate through its output end, thereby pushing the tote bag forward above the machine body 1. A gear 4 is fixedly connected to one end of the conveyor roller 3. A fixing plate 5 is fixedly connected to the top of the machine body 1. An adjustment component is provided inside the fixing plate 5, and an ink supply component is provided inside the fixing plate 5.
[0033] The adjustment assembly includes a slide column 6, which is slidably connected inside the fixed plate 5. A slider 7 is fixedly connected to the bottom end of the slide column 6. The sliding of the slider 7 allows the printing plate 12 to stably contact the surface of the tote bag under pressure control. The slider 7 is slidably connected inside the fixed plate 5. A spring 8 is sleeved on the outer wall of the slide column 6. The two ends of the spring 8 are fixedly connected to the fixed plate 5 and the slider 7, respectively. A rotating shaft 9 is rotatably connected inside the slider 7. A gear 10 is fixedly connected to the outer wall of the rotating shaft 9. The gear 10 meshes with the gear 4. A printing roller 11 is fixedly connected to the outer wall of the rotating shaft 9. The rotation of the rotating shaft 9 drives the printing roller 11 to start running. The printing roller 11 transfers ink to the surface of the printing plate 12 through rolling friction, realizing the transfer of the pattern. The printing plate 12 is fixedly connected to the outer wall of the printing roller 11.
[0034] Specifically, when using this letterpress printing machine, the operator first passes the shopping bag through the feed frame 15 and feeds it above the machine body 1. At this time, motor 2 drives the conveyor roller 3 to start rotating through its output end. The rotation of the conveyor roller 3 causes the shopping bag to move forward above the machine body 1. One end of the conveyor roller 3 is equipped with gear 4, which meshes tightly with gear 10. When gear 4 is subjected to force and rotates, it drives gear 10 to continue rotating. Gear 2 10 further drives the rotating shaft 9. The rotation of the rotating shaft 9 drives the printing plate 12 to rotate through the printing roller 11 connected to it. During the rotation, the printing plate 12 draws ink from the ink roller 14 through the rolling friction. When the printing plate 12 rotates, it contacts the surface of the shopping bag. The rotation of the printing plate 12 drives the slider 7 to slide inside the fixed plate 5. During the sliding process, the slider 7 squeezes and contracts the spring 8 through the force at one end. The spring 8, through the elastic reaction force of the sliding column 6, makes the printing plate 12 firmly attached to the top of the shopping bag and ensures uniform pressure during the printing process, avoiding printing blur or deviation caused by uneven or unstable pressure.
[0035] Reference Figure 3 and Figure 5 The ink supply assembly includes a second motor 13 and an ink roller 14. One side of the second motor 13 is fixedly connected to one side of the fixed plate 5. One end of the ink roller 14 is fixedly connected to the output end of the second motor 13. The ink roller 14 contacts the printing plate 12. During rotation, the ink roller 14 evenly coats the surface of the printing plate 12 with ink, ensuring continuous ink supply during printing. A feed frame 15 is fixedly connected to one side of the machine body 1. A support frame 16 is fixedly connected to one side of the feed frame 15. A cylinder 17 is fixedly connected to the top of the support frame 16. A connecting block 18 is fixedly connected to the output end of the cylinder 17. A pressure block 19 is fixedly connected to the bottom of the connecting block 18, and a pressure table 22 is fixedly connected to the top of the machine body 1. The main function of the pressure table 22 is to provide stable support for the printing process and keep the tote bag flat during the printing process. A support column 20 is fixedly connected to the top of the support frame 16. The pressure block 19 is slidably connected to the outer wall of the support column 20. A second spring 21 is sleeved on the outer wall of the support column 20. The second spring 21 can provide a certain elasticity. When the pressure block 19 applies pressure, the second spring 21 can adjust the intensity of the pressure. The two ends of the second spring 21 are fixedly connected to the inside of the support frame 16 and the pressure block 19, respectively.
[0036] Specifically, as the tote bag passes through the printing area, the machine also employs a pressure block 19 to ensure the flatness of the tote bag. The pressure block 19 is installed at the output end of the cylinder 17, which moves by pushing the connecting block 18. The connecting block 18 then causes the pressure block 19 to slide on the outer wall of the support column 20. When the pressure block 19 contacts the tote bag, it uses its own weight and pressure to firmly press the tote bag onto the conveyor roller 3. Simultaneously, the pressure block 19 also compresses the spring 21, ensuring that the pressure block 19 is in close contact with the surface of the tote bag, thus achieving the flattening function of the tote bag. This prevents wrinkles, bending, or irregular deformation of the tote bag during the printing process, thereby ensuring the stability and consistency of the printing quality.
[0037] Working Principle: When using this letterpress printing machine, the shopping bag is first fed through the feed frame 15 into the upper part of the machine body 1. At this time, the output end of motor 2 drives the conveyor roller 3 to rotate inside the machine body 1, which in turn drives the shopping bag to move above the machine body 1. Simultaneously, the conveyor roller 3 drives one end of gear 4 to rotate. Gear 4, under force, drives the meshing gear 10 to rotate. Gear 10, under force, drives the internal rotating shaft 9 to rotate. The rotating shaft 9, under force, drives the printing roller 11 on the outer wall to rotate, causing the printing roller 11 to drive the printing plate 12 on the outer wall to rotate. When the printing plate 12 rotates, it contacts the shopping bag. At this time, the printing plate 12 drives the slider 7 to slide inside the fixed plate 5 through the printing roller 11. The slider 7, under force, squeezes the spring 8. The pressure is compressed, and through the elasticity of the sliding column 6, the printing plate 12 can be pressed tightly against the top of the shopping bag for printing. At the same time, the printing plate 12 will also contact the ink roller 14 during rotation, so that the printing plate 12 can pick up ink from the ink roller 14, thereby achieving the effect of effectively printing shopping bags of different thicknesses. When the shopping bag passes through the feed frame 15, the connecting block 18 can be moved by the output end of the cylinder 17. The connecting block 18 is forced to drive the bottom pressure block 19 to slide on the outer wall of the support column 20, so that the pressure block 19 presses the shopping bag on the pressure table 22 and the conveying roller 3. At the same time, when the pressure block 19 contacts the shopping bag, it will squeeze the spring 21, so that the pressure block 19 fits against the top of the shopping bag, thereby achieving the effect of effectively flattening the shopping bag during printing.
[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A letterpress printing machine for printing on shopping bags, comprising a machine body (1), characterized in that: A motor (2) is fixedly connected to one side of the machine body (1), a conveyor roller (3) is fixedly connected to the output end of the motor (2), a gear (4) is fixedly connected to one end of the conveyor roller (3), a fixed plate (5) is fixedly connected to the top of the machine body (1), an adjustment component is provided inside the fixed plate (5), and an ink supply component is provided inside the fixed plate (5). The adjustment assembly includes a slide column (6), which is slidably connected inside the fixed plate (5). A slider (7) is fixedly connected to the bottom end of the slide column (6), and the slider (7) is slidably connected inside the fixed plate (5). A spring (8) is sleeved on the outer wall of the slide column (6). The two ends of the spring (8) are fixedly connected to the fixed plate (5) and the slider (7) respectively. A rotating shaft (9) is rotatably connected inside the slider (7). A gear (10) is fixedly connected to the outer wall of the rotating shaft (9). The gear (10) meshes with the gear (4). A printing roller (11) is fixedly connected to the outer wall of the rotating shaft (9), and a printing plate (12) is fixedly connected to the outer wall of the printing roller (11).
2. The letterpress printing machine for printing on tote bags according to claim 1, characterized in that: The ink supply assembly includes a second motor (13) and an ink roller (14). One side of the second motor (13) is fixedly connected to one side of the fixed plate (5), and one end of the ink roller (14) is fixedly connected to the output end of the second motor (13). The ink roller (14) is in contact with the printing plate (12).
3. The letterpress printing machine for printing on tote bags according to claim 2, characterized in that: A feed frame (15) is fixedly connected to one side of the machine body (1), and a support frame (16) is fixedly connected to one side of the feed frame (15).
4. A letterpress printing machine for printing on tote bags according to claim 3, characterized in that: A cylinder (17) is fixedly connected to the top of the support frame (16), and a connecting block (18) is fixedly connected to the output end of the cylinder (17).
5. A letterpress printing machine for printing on tote bags according to claim 4, characterized in that: The bottom of the connecting block (18) is fixedly connected to a pressure block (19), and the top of the body (1) is fixedly connected to a pressure table (22).
6. A letterpress printing machine for printing on tote bags according to claim 5, characterized in that: The support frame (16) is fixedly connected to the top of the support column (20), and the pressure block (19) is slidably connected to the outer wall of the support column (20).
7. A letterpress printing machine for printing on tote bags according to claim 6, characterized in that: The outer wall of the support column (20) is fitted with a spring (21), and the two ends of the spring (21) are fixedly connected to the support frame (16) and the pressure block (19) respectively.