High-precision screen printing production line for tableware

Abstract

The utility model relates to tableware production equipment field, and specifically is a kind of tableware high-precision silk-screen production line, including printing base, the top of printing base is fixedly connected with two support straight columns, the top of support straight column is rotatably connected with rotating plate, the top of two rotating plates is fixedly connected with printing cover plate, the below of printing cover plate on printing base is fixedly connected with limiting component, the top of limiting component is fixedly connected with multiple arc-shaped support frames, multiple arc-shaped support frames set in the top of limiting component can form a complete annular profile after contraction, multiple arc-shaped support frames can be driven by limiting component and move along radial direction close to or away from the axis of printing cover seat synchronously, to adapt to different diameter size circular tableware or other objects with circular section, ensure that each arc-shaped support frame always moves synchronously, maintain height concentricity, significantly improve printing accuracy and consistency.

Description

Technical Field

[0001] This utility model relates to the field of tableware production equipment, specifically a high-precision screen printing production line for tableware. Background Technology

[0002] Due to its advantages such as bright colors, durable patterns, and wide applicability to materials, screen printing has become one of the core processes for decorating the surface of tableware. Various disposable paper household products are emerging one after another, and disposable tableware is often used in the catering industry, especially cylindrical disposable tableware. After the tableware is made, trademarks need to be printed on it.

[0003] Common screen printing equipment for tableware typically uses an adjustable support structure to accommodate round plates, bowls, or cups of different diameters. Most existing technologies use a flexible transmission method with retractable cords to connect the drive source and multiple sliders. By pulling the cords, the sliders slide along the guide rails, which in turn pushes the arc plate to unfold or retract. Although this type of cord traction structure is simple and low in cost, the length and tension of each cord are difficult to be completely consistent. Furthermore, uneven stretching or slippage can easily occur during long-term use, causing multiple arc-shaped support frames to move asynchronously. This results in the clamping contour being off-center or twisted, which seriously affects the concentric positioning of the tableware and ultimately leads to problems such as printed pattern misalignment, blurred edges, or misregistration. Utility Model Content

[0004] To address the problems in existing technologies where the length and tension of the cords are difficult to be completely consistent, and where uneven stretching or slippage can easily occur during long-term use, leading to asynchronous movement of multiple arc plates, this utility model proposes a high-precision screen printing production line for tableware.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a high-precision screen printing production line for tableware, including a printing base, two supporting columns fixedly connected to the top of the printing base, a rotating plate rotatably connected to the top of the supporting columns, a printing cover plate fixedly connected to the top of the two rotating plates, a limiting component fixedly connected to the printing base below the printing cover plate, a plurality of arc-shaped support frames fixedly connected to the top of the limiting component, the plurality of arc-shaped support frames sequentially fitting together to form an annular contour, and the limiting component being used to drive the plurality of arc-shaped support frames closer to or further away from the axis of the printing cover plate.

[0006] Preferably, the limiting component includes a trapezoidal base, the bottom of which is fixedly connected to a printing base, and support rods are fixedly connected to the four top corners of the trapezoidal base. A hollow cylinder is fixedly connected to the top of the multiple support rods, and multiple sliding parts are slidably connected to the hollow cylinder.

[0007] Preferably, the hollow cylinder is internally fixedly connected to an annular plate and two positioning rings, and an annular plate is rotatably connected between the two positioning rings. The bottom of the hollow cylinder is fixedly connected to a drive motor that is axially fixed to the annular plate.

[0008] Preferably, the annular plate one has multiple straight grooves arranged in an annular array, and the annular plate two has multiple arc-shaped grooves arranged in an annular array.

[0009] Preferably, the outer wall of the hollow cylinder is provided with a plurality of annular holes at equal intervals in a circumferential direction, and the sliding member can slide along the inner wall of the annular holes.

[0010] Preferably, the sliding member includes an annular column, which is slidably connected to an annular hole in a hollow cylinder. Two ends of one side of the annular column are fixedly connected to sliding columns, and the two ends of the sliding columns are respectively in contact with the inner walls of a straight slide groove and an arc-shaped slide groove. An outer expansion plate is fixedly connected to the end of the annular column away from the sliding columns.

[0011] Preferably, the inner diameter of the expanding plate matches the outer diameter of the hollow cylinder, and the top of the expanding plate is fixedly connected to the arc-shaped support frame.

[0012] The advantages of this utility model are: The multiple arc-shaped support frames on the top of the limiting component of this utility model can form a complete annular contour after shrinking. The multiple arc-shaped support frames can move synchronously towards or away from the axis of the printing cover in the radial direction under the drive of the limiting component, thereby adapting to round tableware or other objects with circular cross-sections of different diameters. This ensures that each arc-shaped support frame always moves synchronously, maintains a high degree of concentricity, and significantly improves printing accuracy and consistency. Compared with the existing technology that uses a rope to pull the slider, this structure abandons the flexible transmission element and avoids the problems of stretching deformation, slippage, breakage, tangling or uneven tension that occur after long-term use of the rope. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of the high-precision screen printing production line for tableware of this utility model; Figure 2 This is a schematic diagram of the limiting component of this utility model; Figure 3 This is a cross-sectional view of the limiting component of this utility model; Figure 4 This is a schematic diagram showing the disassembled structure of the limiting component of this utility model.

[0015] In the diagram: 1. Printing base; 2. Support column; 3. Rotating plate; 4. Printing cover plate; 5. Limiting component; 6. Trapezoidal base; 7. Support rod; 8. Hollow cylinder; 9. Positioning ring; 10. Annular hole; 11. Annular plate one; 12. Straight slide groove; 13. Annular plate two; 14. Arc slide groove; 15. Drive motor; 16. Sliding component; 17. Annular column; 18. Sliding column; 19. Outer expansion plate; 20. Arc support frame. Detailed Implementation

[0016] 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 scope of protection of the present utility model.

[0017] The following is in conjunction with the appendix Figure 1-4 This application provides a further detailed description of a high-precision screen printing production line for tableware, as illustrated in the embodiments below. Figure 1 and Figure 4 A high-precision screen printing production line for tableware includes a printing base 1. Two supporting columns 2 are fixedly connected to the top of the printing base 1. A rotating plate 3 is rotatably connected to the top of the supporting columns 2. A printing cover plate 4 is fixedly connected to the top of the two rotating plates 3. A limiting component 5 is fixedly connected to the printing base 1 below the printing cover plate 4. Multiple arc-shaped support frames 20 are fixedly connected to the top of the limiting component 5. The multiple arc-shaped support frames 20 are sequentially fitted to form an annular contour. The limiting component 5 is used to drive the multiple arc-shaped support frames 20 to approach or move away from the axis of the printing cover plate 4.

[0018] The tops of the two rotating plates 3 are fixedly connected to a printing cover plate 4, which is the core execution component of screen printing. Underneath it are key components such as screen templates and squeegees, which are responsible for accurately transferring ink to the surface of the tableware.

[0019] Multiple arc-shaped support frames 20 provided on the top of the limiting component 5 can form a complete annular profile after shrinking. The multiple arc-shaped support frames 20 can move synchronously toward or away from the axis of the printing cover in the radial direction, thereby adapting to round tableware or other objects with circular cross-sections of different diameters.

[0020] This design is particularly suitable for surface decoration needs on various materials such as ceramic plates, glassware, plastic tableware, and metal products, and is especially suitable for efficient and high-precision printing tasks in mass production scenarios. Its flexible and adjustable limiting component 5 not only improves compatibility with tableware of different sizes, but also significantly improves printing quality and yield, and reduces the scrap rate caused by inaccurate positioning.

[0021] Reference Figure 3 and Figure 4 The limiting component 5 includes a trapezoidal base 6, the bottom of which is fixedly connected to the printing base 1. Support rods 7 are fixedly connected to the four corners of the top of the trapezoidal base 6, and a hollow cylinder 8 is fixedly connected to the top of the multiple support rods 7. Multiple sliding parts 16 are slidably connected to the hollow cylinder 8.

[0022] The trapezoidal base 6 is made of high-strength metal casting or machining. It has an overall trapezoidal structure that is smaller at the top and larger at the bottom, and has excellent bending stiffness and anti-overturning ability. The bottom of the trapezoidal base 6 is firmly connected to the printing base 1 by bolts or welding to ensure that the entire limiting system remains stable during high-frequency printing cycles.

[0023] At the top four corners of the trapezoidal base 6, support rods 7 are vertically fixedly connected. The four support rods 7 are arranged in a rectangular shape to support the hollow cylinder 8 above. The axis of the hollow cylinder 8 is coaxial with the central axis of the printing cover plate 4 to ensure symmetrical movement.

[0024] The hollow cylinder 8 is internally fixedly connected to an annular plate 11 and two positioning rings 9. An annular plate 2 13 is rotatably connected between the two positioning rings 9. The bottom of the hollow cylinder 8 is fixedly connected to a drive motor 15 that is fixedly connected to the axis of the annular plate 2 13.

[0025] An annular plate 11 is fixedly connected to the upper region of the inner wall of the hollow cylinder 8 as a stationary reference component. Two positioning rings 9 are symmetrically arranged in the lower region inside the hollow cylinder 8 and fixed to the inner wall of the cylinder to limit the axial position of the rotating component. An annular plate 2 13 is rotatably connected between the two positioning rings 9 through a bearing or bushing. The annular plate 2 13 can rotate freely around the axis of the hollow cylinder 8.

[0026] The drive motor 15 is preferably a stepper motor or a servo motor, which has precise angle control and torque feedback functions, and can realize multi-level speed adjustment and position closed-loop control.

[0027] The annular plate 11 has multiple straight grooves 12 arranged in an annular array, and the annular plate 2 13 has multiple arc grooves 14 arranged in an annular array.

[0028] The linear groove 12 extends radially to guide the linear movement of the slider 16. The arc-shaped groove 14 has its arc trajectory centered on the axis of the hollow cylinder 8, with a radius slightly larger than the circumference of the linear groove 12. The curvature and length of the arc-shaped groove 14 determine the maximum stroke and motion curve of the slider 16.

[0029] The outer wall of the hollow cylinder 8 is provided with a plurality of annular holes 10 at equal intervals in a circumferential direction, and the sliding member 16 can slide along the inner wall of the annular holes 10.

[0030] Multiple annular holes 10 on the outer side of the hollow cylinder 8 penetrate the cylinder wall, forming a through-hole structure perpendicular to the axis, which is used to accommodate and guide the radial movement of the sliding member 16, thereby achieving radial guidance.

[0031] The sliding member 16 includes an annular column 17, which is slidably connected to the annular hole 10 in the hollow cylinder 8. Sliding columns 18 are fixedly connected to both ends of one side of the annular column 17. The two ends of the sliding column 18 are respectively attached to the inner walls of the straight slide groove 12 and the arc-shaped slide groove 14. An outer expansion plate 19 is fixedly connected to the end of the annular column 17 away from the sliding column 18.

[0032] The outer diameter of the annular column 17 matches the annular hole 10. One end of the annular column 17 extends into the hollow cylinder 8 and is fixed to the sliding column 18. The other end extends outward and is fixed to the outer expansion plate 19. The sliding column 18 is symmetrically arranged. One end is embedded in the straight groove 12 and the other end is embedded in the arc groove 14. It is simultaneously constrained by the double grooves of the straight groove 12 and the arc groove 14.

[0033] The inner diameter of the outer expansion plate 19 matches the outer diameter of the hollow cylinder 8, and the top of the outer expansion plate 19 is fixedly connected to the arc-shaped support frame 20.

[0034] Its inner diameter matches the outer diameter of the hollow cylinder 8, ensuring that the outer expansion plate 19 remains stable and does not deflect during movement. The top of the outer expansion plate 19 is welded or screwed to the arc-shaped support frame 20, forming the end actuator for force transmission.

[0035] Working principle: When the screen printing production line starts and needs to adapt to a specific size of round tableware, the drive motor 15 issues a start command. The drive motor 15 begins to rotate forward, and its output shaft drives the annular plate 13, which is fixedly connected to it, to rotate synchronously around the central axis of the hollow cylinder 8. When the arc-shaped slide 14 undergoes angular displacement, its inner wall applies a tangential thrust to the sliding column 18, attempting to guide the sliding column 18 to move along the arc-shaped trajectory. Because the other end of the sliding column 18 is constrained in the linear slide 12, which only allows radial linear movement, it cannot generate circumferential displacement. The actual motion state of the sliding column 18 is the result of the vector synthesis of the two constraints mentioned above. Under the condition of mechanical equilibrium, the sliding column 18 can only slide in a straight line in a pure radial direction along the direction of the straight groove 12, thereby accurately converting the rotational motion of the annular plate 13 into the linear displacement of the sliding member 16. This linear displacement is effectively transmitted to the annular column 17 through the annular column 17 and moves outward synchronously with the sliding column 18. The outer expansion plate 19 fixedly connected to its end expands radially, thereby driving the arc-shaped support frame 20 rigidly connected to it at the top to unfold outward. Since all the sliding parts 16 are structurally identical and are evenly distributed at equal angles in the circumferential direction, each group of sliding columns 18 is subject to the same driving torque and guiding constraints. Therefore, the stroke, speed and acceleration of each arc support frame 20 are highly consistent, so that multiple arc support frames 20 work together to form a geometrically closed, uniformly stressed and centrally symmetrical annular support surface at the expansion endpoint. Its inner diameter precisely matches the outer contour diameter of the tableware to be printed, providing stable and stress-free circumferential support for the tableware, ensuring that it does not shift, tilt or rotate during the subsequent pressing of the printing cover plate 4, and ensuring high precision and consistency of pattern printing. After the current batch of printing is completed, if it is necessary to change to tableware with a smaller diameter or to take out the finished product, the control system issues a reverse command to drive the motor 15 to rotate in the reverse direction. At this time, the annular plate 13 rotates in the reverse direction, and the arc-shaped slide 14 applies a reverse thrust to the sliding column 18, forcing the sliding column 18 to slide radially inward along the straight slide 12, which drives the annular column 17, the outer expansion plate 19 and the arc-shaped support frame 20 to retract synchronously. When all the arc-shaped support frames 20 are fully retracted, their inner edges re-fit, restoring the complete annular structure with the smallest diameter, making it easy for operators to put in or take out tableware, thus achieving rapid changeover and efficient production cycle.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-precision screen printing production line for tableware, comprising a printing base (1), wherein two supporting columns (2) are fixedly connected to the top of the printing base (1), and rotating plates (3) are rotatably connected to the top of the supporting columns (2), and printing cover plates (4) are fixedly connected to the top of the two rotating plates (3), characterized in that: A limiting component (5) is fixedly connected to the printing base (1) below the printing cover plate (4). A plurality of arc-shaped support frames (20) are fixedly connected to the top of the limiting component (5). The plurality of arc-shaped support frames (20) are sequentially fitted to form an annular profile. The limiting component (5) is used to drive the plurality of arc-shaped support frames (20) to approach or move away from the axis of the printing cover plate (4).

2. The high-precision screen printing production line for tableware according to claim 1, characterized in that: The limiting component (5) includes a trapezoidal base (6), the bottom of which is fixedly connected to the printing base (1), and support rods (7) are fixedly connected to the four corners of the top of the trapezoidal base (6). A hollow cylinder (8) is fixedly connected to the top of the multiple support rods (7), and multiple sliding parts (16) are slidably connected to the hollow cylinder (8).

3. The high-precision screen printing production line for tableware according to claim 2, characterized in that: The hollow cylinder (8) is fixedly connected to an annular plate (11) and two positioning rings (9). An annular plate (13) is rotatably connected between the two positioning rings (9). The bottom of the hollow cylinder (8) is fixedly connected to a drive motor (15) that is fixedly connected to the axis of the annular plate (13).

4. The high-precision screen printing production line for tableware according to claim 3, characterized in that: The annular plate one (11) has multiple straight grooves (12) arranged in an annular array, and the annular plate two (13) has multiple arc-shaped grooves (14) arranged in an annular array.

5. A high-precision screen printing production line for tableware according to claim 4, characterized in that: The outer wall of the hollow cylinder (8) is provided with a plurality of annular holes (10) at equal intervals in the circumferential direction, and the sliding member (16) can slide along the inner wall of the annular holes (10).

6. A high-precision screen printing production line for tableware according to claim 5, characterized in that: The sliding member (16) includes an annular column (17), which is slidably connected to the annular hole (10) opened in the hollow cylinder (8). Two ends of one side of the annular column (17) are fixedly connected to sliding columns (18). The two ends of the sliding columns (18) are respectively attached to the inner walls of the straight slide groove (12) and the arc-shaped slide groove (14). The end of the annular column (17) away from the sliding column (18) is fixedly connected to an outer expansion plate (19).

7. A high-precision screen printing production line for tableware according to claim 6, characterized in that: The inner diameter of the outer expansion plate (19) matches the outer diameter of the hollow cylinder (8), and the top of the outer expansion plate (19) is fixedly connected to the arc-shaped support frame (20).

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