A printing device for disposable cups

Abstract

This invention provides a printing device for disposable cups, belonging to the field of daily necessities processing technology. It includes a frame, a lifting assembly, printing molds, a conveyor belt, and a self-aligning assembly. The invention uses a lifting assembly on the frame to mount several printing molds, and a through conveyor belt located below the printing molds at the bottom of the frame. This allows the disposable cups to be printed to pass sequentially through each printing mold. Simultaneously, a self-aligning assembly is located at the bottom opening of each printing mold. The rotating sleeve of the self-aligning assembly drives a rotating bar, allowing the bar to rotate circumferentially around the disposable cup. This enables fine-tuning of any misaligned cups, ensuring that the disposable cup and the printing mold are coaxially aligned vertically. This prevents the disposable cup from contacting the printing mold first, which could cause scratches on the printed pattern, thus guaranteeing printing quality and improving overall product quality.

Description

Technical Field

[0001] This invention relates to the field of cup processing technology, specifically to a printing device for disposable cups. Background Technology

[0002] Disposable cups, also known as single-use cups, are containers designed for single use only and then discarded. They are typically made of paper, plastic, expanded polystyrene, aluminum foil composites, or biodegradable materials. Because different scenarios require different styles of disposable cups, there is a need for efficient equipment for printing on disposable cups, capable of printing on various designs.

[0003] Currently, the existing cup printing equipment on the market usually includes two types: rotary and conveyor belt. For example, a milk tea cup color printing equipment disclosed in patent CN217047913U has a rotating shaft installed on the base, and a turntable is fixedly sleeved on the outside of the rotating shaft. Several placement rods arranged in a circular array are rotatably inserted on the turntable. Each of the placement rods has a pad fixedly sleeved on one end of the turntable. The output shaft of the first motor is connected to one end of the rotating shaft. The printing equipment body is set on one side of the turntable and the printing port is aligned with a placement rod on the turntable. In use, the milk tea cup to be printed is placed on the placement rod, and then the turntable rotates the placement rod with the milk tea cup installed to the printing port of the printing equipment body. Then the placement rod rotates once, so that the milk tea cup rotates once at the printing port, realizing the printing of the pattern on the milk tea cup. Although rotary cup printing equipment can print patterns on milk tea cups, the printing nozzle of the printing equipment body is arranged along the axis of the milk tea cup and located on one side of the milk tea cup, which means that the inner cup needs to rotate once every time it prints, resulting in low efficiency and difficulty in meeting the needs of large-scale production. A conveyor belt type cup printing device, such as the milk tea cup production printing device disclosed in patent CN210851677U, has a first groove with a first fixed frame inside the box. A first motor is fixedly connected to the side of the first fixed frame. The output shaft of the first motor is connected to a threaded column. A threaded cylinder is threadedly connected to the surface of the threaded column. A support rod is fixedly connected to the threaded cylinder. A first sliding sleeve is fixedly connected to the support rod. A first sliding rod passes through the first sliding sleeve. A fixed block is connected to the lower end of the first sliding rod. The upper end of the first sliding rod is fixedly connected to the inner wall of the box. A printing mold is fixedly connected to the bottom surface of the first sliding sleeve. At the same time, a transmission belt is set at the lower part of the box and at the bottom of the printing mold. After the cup to be printed is conveyed by the transmission belt and stops below the printing mold, the first motor rotates and drives the threaded cylinder to move down through the threaded column. At this time, the threaded cylinder drives the printing mold to move down through the support rod and the first sliding sleeve and fits onto the outside of the cup, realizing one-time printing of the pattern on the cup without the cup rotating, thus improving processing efficiency. However, this method of conveying cups via a conveyor belt has the problem of inaccurate cup positioning. Specifically, after the conveyor belt stops, the cup may become misaligned with the printing mold in the vertical direction. This can cause the printing mold to touch the side of the cup first when it moves down, pushing the cup away. As a result, the pattern on the part of the cup that touches the printing mold first will be smudged, affecting the printing quality and thus the overall quality of the cup. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, the aim is to provide a printing device for disposable cups, which includes a liftable printing mold positioned above the conveyor belt. Simultaneously, a self-aligning component is provided at the inlet of the printing mold, requiring a self-aligning operation before the cup enters the printing mold. This ensures that the cup and the printing mold are coaxially aligned in the vertical direction, thereby avoiding the problem of printing quality being affected by misalignment between the cup and the printing mold, and guaranteeing the quality of the cup.

[0005] The specific technical solution is as follows: A printing device for disposable cups, characterized by including: frame; The lifting assembly includes a lifting drive, a lifting frame, and guide components. The lifting drive is mounted on the top of the frame and arranged vertically downwards. The lifting frame is slidably mounted on the frame and is poweredly connected to the lifting drive. The guide components are installed between the frame and the lifting frame. Several printing molds are installed at intervals along one direction on the lifting frame, and the bottom of each printing mold is open. A conveyor belt passes through the frame and is positioned below several printing dies, with the conveying direction of the conveyor belt consistent with the arrangement direction of the printing dies. The self-aligning assembly is located at the lower opening of each printing mold. The self-aligning assembly includes a rotating sleeve and a moving bar. The rotating sleeve is coaxially located at the lower end of the printing mold and is rotatably connected to the printing mold. The moving bar has an arc-shaped structure, with one end connected to the rotating sleeve and the other end extending into the inner hole of the rotating sleeve.

[0006] The aforementioned printing equipment for disposable cups further includes an angle adjustment component, which is mounted on a rotating sleeve. The angle adjustment component includes a drive motor, a power supply, and a controller. A drive gear is mounted on the output shaft of the drive motor. A driven gear is provided at the end of the actuating bar connected to the rotating sleeve, and the driven gear meshes with the drive gear. The power supply and the drive motor are both electrically connected to the controller.

[0007] In the aforementioned printing equipment for disposable cups, a recessed cavity is provided at the bottom of the rotating sleeve, and the size of the recessed cavity is larger than the size of the inner hole of the rotating sleeve. The actuating strip connected to one end of the rotating sleeve and the angle adjustment component are both disposed in the recessed cavity.

[0008] The above-mentioned printing equipment for disposable cups includes an outer toothed ring structure on the outer wall of the rotating sleeve, and the outer toothed ring structures of the rotating sleeves at the bottom of two adjacent printing molds are dynamically connected. An adjustment motor is provided on the lifting frame, and an adjustment gear is installed on the output shaft of the adjustment motor and meshes with the outer toothed ring structure of a rotating sleeve.

[0009] The above-mentioned printing equipment for disposable cups includes a guide rod and a guide sleeve. The guide sleeve is installed on the frame and arranged in a vertical direction. The upper end of the guide rod is slidably disposed in the guide sleeve, and the lower end of the guide rod is fixedly connected to the lifting frame.

[0010] The above-mentioned printing equipment for disposable cups includes a printing mold comprising an outer barrel frame and a printing sponge. The outer barrel frame has a cup-shaped mounting cavity. The upper end of the outer barrel frame is fixedly connected to a lifting frame, and the lower end of the outer barrel frame is rotatably connected to a rotating sleeve. The printing sponge is placed inside the cup-shaped mounting cavity of the outer barrel frame, and the printing sponge has a printed pattern and absorbs printing raw materials.

[0011] The aforementioned printing equipment for disposable cups further includes a pressing component, which is disposed within the printing mold. The pressing component includes a push rod and a pressing block. One end of the push rod is fitted with the pressing block, and the end of the push rod with the pressing block is disposed within the upper end of the printing mold.

[0012] In the aforementioned printing equipment for disposable cups, the push rod is a hollow tube structure with both ends penetrating through it, and one end of the push rod passes through a pressing block.

[0013] The aforementioned printing equipment for disposable cups further includes a floating component, which is disposed between the lifting frame and the pressing assembly. Each pressing assembly corresponds to a floating component. The floating component includes a retaining ring, a telescopic spring, and a limiting frame. The limiting frame is installed on the lifting frame. The end of the pushing rod opposite to the pressing block extends upward to the outside of the lifting frame. The pushing rod slides vertically within the lifting frame and the printing mold. A retaining ring is sleeved on the pushing rod and located below the limiting frame. The telescopic spring is sleeved on the pushing rod and its two ends are connected to the limiting frame and the retaining ring, respectively.

[0014] The aforementioned printing equipment for disposable cups includes a plurality of curing structures arranged on the frame and beside the conveyor belt, with the plurality of curing structures spaced apart along the conveying direction of the conveyor belt.

[0015] The positive effects of the above technical solution are: The aforementioned printing equipment for disposable cups incorporates a lifting assembly on the frame, with several printing molds spaced apart on the lifting assembly. Furthermore, a self-aligning assembly is installed at the bottom opening of each printing mold. A conveyor belt is positioned below the printing molds and the self-aligning assembly. This allows the self-aligning assembly to fine-tune the position of the cup to be printed as it is conveyed to the bottom of the printing mold, ensuring that the cup is vertically coaxial with the printing mold. This prevents the cup from contacting the printing mold first and causing the printed pattern to be scratched when the printing mold moves down and fits onto the cup, thus guaranteeing printing quality and the overall quality of the cup. Attached Figure Description

[0016] Figure 1 This is a structural diagram of an embodiment of a printing apparatus for disposable cups according to the present invention; Figure 2 This is a cross-sectional view of the printing mold, self-aligning assembly, and pressing assembly of a printing device for disposable cups according to the present invention after installation; Figure 3 This is a bottom view of the self-aligning component of a printing apparatus for disposable cups according to the present invention.

[0017] In the attached diagram: 1. Frame; 2. Lifting assembly; 21. Lifting driver; 22. Lifting frame; 23. Guide component; 231. Guide rod; 232. Guide sleeve; 3. Printing mold; 31. Outer barrel frame; 32. Printing sponge; 4. Conveyor belt; 5. Self-aligning assembly; 51. Rotating sleeve; 52. Actuating bar; 53. Angle adjustment component; 511. Cavity; 521. Driven gear; 531. Drive motor; 532. Drive gear; 6. Adjusting motor; 61. Transition gear; 7. Pressing assembly; 71. Push rod; 72. Pressing block; 8. Floating component; 81. Snap ring; 82. Telescopic spring; 83. Limiting frame; 9. Cup body. Detailed Implementation

[0018] To make the technical means, creative features, objectives, and effects of this invention easier to understand, the following embodiments are provided in conjunction with the appendix. Figure 1 To be continued Figure 3 The technical solutions provided by this invention are described in detail, but the following content is not intended to limit this invention.

[0019] picture Figure 1 This is a structural diagram of an embodiment of a printing apparatus for disposable cups according to the present invention; Figure 2 This is a cross-sectional view of the printing mold, self-aligning assembly, and pressing assembly of a printing device for disposable cups according to the present invention, after installation. Figure 1 and Figure 2 As shown, the printing equipment for disposable cups provided in this embodiment includes: a frame 1, a lifting assembly 2, a printing mold 3, a conveyor belt 4, and a self-aligning assembly 5.

[0020] Specifically, the frame 1 serves as the main mounting carrier for the printing equipment, providing stable support for the subsequent installation of the lifting assembly 2 and printing mold 3, thereby ensuring the stable installation and operation of the subsequent related structures.

[0021] Specifically, the lifting assembly 2 includes a lifting driver 21, a lifting frame 22, and a guide member 23. The lifting driver 21 is mounted on the top of the frame 1 and arranged vertically downwards. The lifting frame 22 is slidably mounted on the frame 1 and is poweredly connected to the lifting driver 21, enabling the lifting driver 21 to drive the lifting frame 22 to move vertically, thus providing the conditions for subsequently lifting the printing mold 3 to achieve contact printing and detachment for part removal. At this time, the guide member 23 is installed between the frame 1 and the lifting frame 22, providing guidance for the lifting movement of the lifting frame 22 on the frame 1 and maintaining the stability of the lifting frame 22 during the lifting process.

[0022] Specifically, there are several printing molds 3, and these printing molds 3 are installed at intervals along one direction on the lifting frame 22, so that the printing molds 3 can be distributed at intervals on the lifting frame 22. At this time, the bottom of each printing mold 3 is open, so that the cup body 9 to be printed can enter the printing mold 3 through the bottom opening. This provides the conditions for different printing molds 3 to print on different cup bodies 9, thereby realizing the step-by-step printing of complex patterns.

[0023] Specifically, the conveyor belt 4 passes through the bottom of the frame 1, transporting the cups 9 to be printed into the frame 1 for printing, and then transporting the printed cups 9 out of the frame 1, thus achieving automatic loading and unloading during the printing process. The conveyor belt 4 is positioned below several printing molds 3, with the conveying direction of the conveyor belt 4 aligned with the arrangement direction of the printing molds 3. This allows the printing molds 3 to be fitted over the cups 9 on the conveyor belt 4 as they move downwards under the action of the lifting frame 22, thereby enabling the printing operation.

[0024] Figure 3 This is a bottom view of the self-aligning assembly of a printing apparatus for disposable cups according to the present invention. Figure 2 and Figure 3As shown, the self-aligning assembly 5 is located at the lower opening of each printing mold 3, so that the cup body 9 needs to be adjusted for coaxiality before entering any printing mold 3 to ensure the quality of each print. At this time, the self-aligning assembly 5 includes a rotating sleeve 51 and a toggle bar 52. The rotating sleeve 51 is coaxially located at the lower end of the printing mold 3 and is rotatably connected to the printing mold 3, so that the axis of the rotating sleeve 51 can be aligned with the axis of the printing mold 3, and at the same time, the rotating sleeve 51 can rotate on the corresponding printing mold 3, providing power for subsequent adjustment of the cup body 9. In addition, the actuating bar 52 has an arc-shaped structure, with one end connected to the rotating sleeve 51 and the other end extending into the inner hole of the rotating sleeve 51. This allows different parts of the actuating bar 52 to form circles of different diameters in the circumferential direction when the rotating sleeve 51 drives the actuating bar 52 to rotate. The actuating bar 52 pushes the cup body 9 located in the inner hole of the rotating sleeve 51 to make fine adjustments to its position, ensuring that the cup body 9 is in a coaxial position with the rotating sleeve 51. This achieves the coaxial arrangement of the cup body 9 and the printing mold 3, ensuring printing quality. In use, first adjust the position of the actuating bar 52 extending into the inner hole of the rotating sleeve 51 by adjusting the size of the bottom of the cup body 9 to be printed. Then, start the lifting frame 22 to move the printing mold 3 down, so that the rotating sleeve 51 located at the bottom of the printing mold 3 is fitted onto the bottom of the cup body 9, that is, the bottom of the cup body 9 extends into the inner hole of the rotating sleeve 51. At this time, start the rotating sleeve 51 to rotate, so that the actuating bar 52 can rotate around the circumference of the bottom of the cup body 9, thereby pushing the cup body 9, which is offset, to move slightly, so as to achieve the coaxial arrangement of the cup body 9 and the printing mold 3 in the vertical direction. Then stop the rotation of the rotating sleeve 51, and then move the lifting frame 22 down to make the printing mold 3 continue to move down, so as to fit the printing mold 3 onto the cup body 9, thereby realizing the printing of the pattern on the cup body 9. It is worth noting that the upper end of the rotating sleeve 51 is fitted with a rotating bearing, and the bottom of the printing mold 3 is provided with a groove. The outer ring of the rotating bearing is in close contact with the inner wall of the groove at the bottom of the printing mold 3. That is, the rotating sleeve 51 is rotated and installed on the bottom of the printing mold 3 through the bearing and the groove, ensuring that the rotating sleeve 51 can rotate smoothly after installation.

[0025] More specifically, the rotating sleeve 51 is also equipped with an angle adjustment component 53, which drives the actuating bar 52 to deflect, adjusting the angle and length of the end of the actuating bar 52 that extends into the inner hole of the rotating sleeve 51. The angle adjustment component 53 includes a drive motor 531, a power supply, and a controller. A drive gear 532 is mounted on the output shaft of the drive motor 531. A driven gear 521 is provided at the end of the actuating bar 52 connected to the rotating sleeve 51, and the driven gear 521 meshes with the drive gear 532. This allows the driven gear 522 to drive the driven gear 521 to rotate when the drive motor 531 is running, thereby achieving the deflection of the actuating bar 52 on the rotating sleeve 51 and adjusting the angle and length of the actuating bar 52 extending into the inner hole of the rotating sleeve 51. This results in a more rational structural design. In addition, both the power supply and the drive motor 531 are electrically connected to the controller. The power supply provides the electrical energy required for the drive motor 531 to operate, and the controller controls the operating angle of the drive motor 531 to adjust the angle and length of the actuating bar 52 extending into the inner hole of the rotating sleeve 51. This not only adapts to the position adjustment needs of cups 9 of different sizes, improving adaptability, but also allows the actuating bar 52 to be retracted after the cup 9 is positioned, preventing it from interfering with the subsequent entry of the cup 9 into the printing mold 3 and reducing printing interference. It is worth noting that the power supply is a rechargeable portable power source, which can be recharged after use, making the structural design more reasonable.

[0026] More specifically, a recess 511 is provided at the bottom of the rotating sleeve 51, and the size of the recess 511 is larger than the size of the inner hole of the rotating sleeve 51. That is, the recess 511 expands the installation space at the bottom of the rotating sleeve 51. At this time, the actuating strip 52 connected to one end of the rotating sleeve 51 and the angle adjustment component 53 are both set in the recess 511. The recess 511 provides installation and hiding space for the angle adjustment component 53 and the actuating strip 52, avoiding the problem of the structure protruding and interfering with subsequent printing operations. The structural design is more reasonable.

[0027] More specifically, the outer wall of the rotating sleeve 51 is an external gear ring structure, and the external gear ring structures of the rotating sleeves 51 at the bottom of two adjacent printing molds 3 are poweredly connected. Simultaneously, an adjusting motor 6 is also installed on the lifting frame 22. An adjusting gear is mounted on the output shaft of the adjusting motor 6 and meshes with the external gear ring structure of one rotating sleeve 51. This achieves the requirement that one adjusting motor 6 can simultaneously drive multiple rotating sleeves 51 to rotate synchronously, resulting in higher structural utilization and lower manufacturing costs. It is worth noting that a transition gear 61 is installed on the lifting frame 22 between two adjacent rotating sleeves 51. Using the transition gear 61 as a power transmission structure, the rotation direction can be changed, ensuring that the rotation direction of two adjacent rotating sleeves 51 remains consistent, further guaranteeing the synchronous rotation of all rotating sleeves 51 and ensuring printing quality.

[0028] More specifically, the guide member 23, located between the frame 1 and the lifting frame 22, includes a guide rod 231 and a guide sleeve 232. The guide sleeve 232 is installed on the frame 1 and arranged vertically. The upper end of the guide rod 231 is slidably disposed within the guide sleeve 232, and the lower end of the guide rod 231 is fixedly connected to the lifting frame 22. This allows the lifting frame 22 to be guided vertically by the movement of the guide rod 231 within the guide sleeve 232 when the lifting drive 21 drives it to move vertically, improving the stability of the lifting frame 22 during lifting and thus ensuring printing quality. It is worth noting that several guide members 23 are provided, spaced apart and distributed at different locations on the lifting frame 22, ensuring that different positions on the lifting frame 22 are guided by the guide members 23, further enhancing the lifting stability of the lifting frame 22.

[0029] More specifically, each printing mold 3 includes an outer barrel frame 31 and a printing sponge 32. The outer barrel frame 31 has a cup-shaped mounting cavity. The upper end of the outer barrel frame 31 is fixedly connected to the lifting frame 22, and the lower end of the outer barrel frame 31 is rotatably connected to the rotating sleeve 51, achieving stable installation on the lifting frame 22 and providing a mounting carrier for the rotating sleeve 51. At this time, the printing sponge 32 is placed in the cup-shaped mounting cavity of the outer barrel frame 31. The printing sponge 32 has a printed pattern and absorbs printing material, so that when the lifting frame 22 moves down, the outer barrel frame 31 can drive the printing sponge 32 down and contact the cup body 9 to be printed, thereby printing the pattern onto the cup body 9 and meeting the printing requirements of the cup body 9. It is worth noting that the frame 1 is also equipped with a material storage tank, and the material storage tank pipe is connected to the outer barrel frame 31. The printing material is delivered to the patterned part of the printing sponge 32 through the holes on the outer barrel frame 31, providing a continuous supply of material for subsequent pattern printing.

[0030] More specifically, the printing mold 3 is also equipped with a pressing component 7, which can hold the cup body 9 in place during printing to prevent it from moving and ensure the printing effect. The pressing component 7 includes a push rod 71 and a pressing block 72. One end of the push rod 71 is fitted with the pressing block 72, and the end of the push rod 71 with the pressing block 72 is located inside the upper part of the printing mold 3. This allows the cup body 9 to be pressed down by the pressing block 72 when it approaches the printing area after the printing mold 3 moves downwards, ensuring that the cup body 9 will not move during subsequent printing. This results in a more rational structural design.

[0031] More specifically, the push rod 71 in the pressure assembly 7 is a hollow tube structure with both ends penetrating through it, and one end of the push rod 71 passes through the pressure block 72. This allows the printed cup body 9 to be quickly separated from the pressure block 72 by venting air through the push rod 71 after printing, preventing accidental adhesion that could cause the cup body 9 to be dragged and scratched, thus ensuring printing quality. It is worth noting that the end of the push rod 71 facing away from the pressure block 72 is connected to an air supply device via an air pipe, providing the means to blow open the cup body 9.

[0032] More specifically, a floating element 8 is also provided between the lifting frame 22 and the pressing component 7. At this time, each pressing component 7 corresponds to a floating element 8. The floating element 8 provides displacement margin for the pressing component 7, preventing the pressing component 7 from excessively pressing the cup body 9 and damaging the cup body 9. At this time, the floating element 8 includes a retaining ring 81, a telescopic spring 82, and a limiting frame 83. The limiting frame 83 is installed on the lifting frame 22. The end of the pushing rod 71 facing away from the pressing block 72 extends upward to the outside of the lifting frame 22. The pushing rod 71 slides vertically within the lifting frame 22 and the printing mold 3. Furthermore, a retaining ring 81 is sleeved on the pushing rod 71 and located below the limiting frame 83, forming a protruding structure on the pushing rod 71 through the retaining ring 81. Meanwhile, the telescopic spring 82 is sleeved on the outside of the push rod 71 and its two ends are connected to the limit frame 83 and the retaining ring 81 respectively. When the pressing block 72 is not in contact with the cup body 9, the push rod 71 will not fall under the tension of the telescopic spring 82. When the pressing block 72 contacts the cup body 9, as the printing mold 3 and the lifting frame 22 continue to move downward, the push rod 71 can move upward relatively. At this time, the telescopic spring 82 is compressed to adapt, and the telescopic spring 82 provides continuous pressing force to the pressing block 72, avoiding the problem of excessive pressure causing the cup body 9 to be crushed. The structural design is more reasonable.

[0033] More specifically, several curing structures are also provided on the frame 1 and beside the conveyor belt 4, and these curing structures are arranged at intervals along the conveying direction of the conveyor belt 4. This allows the printing material on the cup 9 to cure quickly during the printing process, ensuring the quality of the printed pattern. Furthermore, when printing complex patterns in steps, the interval between adjacent steps can be shortened, further improving processing efficiency. It is worth noting that the curing structure can be a UV lamp, a heating lamp, or a fan, etc. Selecting a suitable curing structure based on the printing material promotes rapid curing and shaping of the printed pattern, resulting in a more rational structural design.

[0034] The disposable cup printing equipment provided in this embodiment includes a frame 1, a lifting assembly 2, printing molds 3, a conveyor belt 4, and a self-aligning assembly 5. A number of printing molds 3 are mounted on the frame 1 using the lifting assembly 2, and a through conveyor belt 4 is provided at the lower part of the frame 1, positioned below the printing molds 3. This allows the cups 9 to be printed to pass sequentially through each printing mold 3. Simultaneously, a self-aligning assembly 5 is provided at the bottom opening of each printing mold 3. The rotating sleeve 51 of the self-aligning assembly 5 drives the actuating strip 52 to rotate, allowing the actuating strip 52 to rotate circumferentially around the cup 9 to be printed. This enables fine-tuning of any misaligned cups 9, ensuring that the cup 9 and the printing mold 3 are coaxially arranged in the vertical direction. This avoids the problem of one side of the cup 9 contacting the printing mold 3 first, causing scratches on the printed pattern, thus guaranteeing printing quality and improving the quality of the cup 9.

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A printing device for disposable cups, characterized in that, include: frame; A lifting assembly includes a lifting driver, a lifting frame, and a guide member. The lifting driver is mounted on the top of the frame and arranged vertically downwards. The lifting frame is slidably disposed on the frame and is poweredly connected to the lifting driver. The guide member is installed between the frame and the lifting frame. A plurality of printing molds are installed at intervals along one direction on the lifting frame, and the bottom of each printing mold is open; A conveyor belt passes through the frame and is positioned below a plurality of printing molds, with the conveying direction of the conveyor belt being consistent with the arrangement direction of the plurality of printing molds; A self-aligning assembly is disposed at the lower opening of each printing mold. The self-aligning assembly includes a rotating sleeve and a toggle bar. The rotating sleeve is coaxially disposed at the lower end of the printing mold and rotatably connected to the printing mold. The toggle bar has an arc-shaped structure, with one end connected to the rotating sleeve and the other end extending into the inner hole of the rotating sleeve.

2. The printing apparatus of the disposable cup according to claim 1, characterized by, It also includes an angle adjustment component, which is disposed on the rotating sleeve. The angle adjustment component includes a drive motor, a power supply, and a controller. A drive gear is mounted on the output shaft of the drive motor. A driven gear is disposed at the end of the toggle bar that is connected to the rotating sleeve, and the driven gear meshes with the drive gear. The power supply and the drive motor are both electrically connected to the controller.

3. The printing apparatus of a disposable cup according to claim 2, characterized in that, The bottom of the rotating sleeve has a recessed cavity, and the size of the recessed cavity is larger than the size of the inner hole of the rotating sleeve. The actuating bar connected to one end of the rotating sleeve and the angle adjustment component are both disposed in the recessed cavity.

4. The printing apparatus for disposable cups according to claim 1, characterized in that, The outer wall of the rotating sleeve is an external gear ring structure, and the external gear ring structures of the rotating sleeves at the bottom of two adjacent printing molds are dynamically connected. An adjustment motor is provided on the lifting frame, and an adjustment gear is installed on the output shaft of the adjustment motor and meshes with the external gear ring structure of one of the rotating sleeves.

5. The printing apparatus for disposable cups according to claim 1, characterized in that, The guide component includes a guide rod and a guide sleeve. The guide sleeve is installed on the frame and arranged in a vertical direction. The upper end of the guide rod is slidably disposed in the guide sleeve, and the lower end of the guide rod is fixedly connected to the lifting frame.

6. The printing apparatus for disposable cups according to claim 1, characterized in that, The printing mold includes an outer barrel frame and a printing sponge. The outer barrel frame has a cup-shaped mounting cavity. The upper end of the outer barrel frame is fixedly connected to the lifting frame, and the lower end of the outer barrel frame is rotatably connected to the rotating sleeve. The printing sponge is disposed in the cup-shaped mounting cavity of the outer barrel frame, and the printing sponge has a printed pattern and absorbs printing raw materials.

7. The printing apparatus for disposable cups according to claim 1, characterized in that, It also includes a pressing component, which is disposed inside the printing mold. The pressing component includes a push rod and a pressing block. One end of the push rod is equipped with the pressing block, and the end of the push rod with the pressing block is disposed inside the upper end of the printing mold.

8. The printing apparatus of a disposable cup according to claim 7, characterized in that, The push rod is a hollow tube structure with both ends through it, and one end of the push rod passes through the pressing block.

9. The printing apparatus of a disposable cup according to claim 7, wherein, It also includes a floating component, which is disposed between the lifting frame and the pressing assembly. Each pressing assembly corresponds to a floating component. The floating component includes a retaining ring, a telescopic spring, and a limiting frame. The limiting frame is installed on the lifting frame. The pushing rod extends upward from the end opposite to the pressing block to the outside of the lifting frame. The pushing rod slides vertically within the lifting frame and the printing mold. A retaining ring is sleeved on the pushing rod and located below the limiting frame. The telescopic spring is sleeved on the pushing rod and its two ends are respectively connected to the limiting frame and the retaining ring.

10. The printing apparatus for disposable cups according to claim 1, characterized in that, A plurality of curing structures are provided on the frame and located beside the conveyor belt, and the plurality of curing structures are arranged at intervals along the conveying direction of the conveyor belt.

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