Rapid printing UV curing equipment for plastic paper cup

Abstract

The invention provides rapid printing UV curing equipment for plastic paper cups, and belongs to the technical field of printing. The rapid printing UV curing equipment comprises a rotating unit, a rubbing unit, a plurality of supporting units and a curing unit; the rotating unit comprises a base, a rotating frame rotationally connected to the base, a rotating piece in transmission connection to the rotating frame, a plurality of rotating bases rotationally connected to the periphery of the rotating frame and a rotating piece in transmission connection to the rotating bases, the rotating piece is used for driving the rotating frame to rotate, and the rotating piece is used for driving the rotating bases to rotate; the rubbing unit is used for rubbing patterns in the cup cylinder printing area; the supporting unit comprises a supporting column fixedly connected to the rotating base, an air blowing piece and a side jacking structure, a plurality of air holes are formed in the outer wall of the supporting column, the air blowing piece communicates with the air holes and is used for blowing air into the air holes, and the side jacking structure stretches out and draws back in the radial direction of the supporting column and is used for abutting against the inner wall of the cup cylinder corresponding to the printing area; the curing unit is arranged on one side of the rotating frame in the second direction and used for curing the pattern. According to the invention, the adaptability of the device is improved.

Description

Technical Field

[0001] This invention belongs to the field of printing technology, specifically relating to a rapid printing UV curing device for plastic paper cups. Background Technology

[0002] With the booming development of the beverage consumption market, disposable paper cups, plastic cups and other cup containers not only serve the function of holding beverages, but have also become an important medium for brand promotion and art display. Printing patterns on their surfaces can greatly enhance the added value and visual appeal of products.

[0003] Currently, cup printing typically employs offset or screen printing techniques, integrated with a UV curing system for rapid drying. The process begins by placing the cup material onto a rotating shaft. UV ink is then transferred to its surface via a printing unit, and ultraviolet light irradiation causes the ink to undergo an instantaneous cross-linking reaction, resulting in rapid curing and drying of the pattern.

[0004] Because there are many different diameter specifications for cup and cylinder products on the market, and the shaft cores of traditional printing equipment are mostly rigid structures with fixed dimensions, it is necessary to replace the shaft core with a matching one when switching between cup and cylinder products of different diameters during production, which results in a defect of low compatibility. Summary of the Invention

[0005] This invention provides a rapid printing UV curing device for plastic paper cups, aiming to solve the technical problem of low device adaptability.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a rapid printing UV curing device for plastic paper cups, comprising:

[0007] A rotating unit includes a base, a rotating frame rotatably connected to the base, a rotating component drively connected to the rotating frame, a plurality of rotating seats rotatably connected to the outer periphery of the rotating frame, and a rotating component drively connected to the rotating seats. The rotating component is used to drive the rotating frame to rotate about a first direction as a rotation axis, and the rotating component is used to drive the rotating seats to rotate about the radial direction of the rotating frame as a rotation axis.

[0008] The printing unit is disposed on one side of the rotating frame along the first direction and is used to print patterns on the printing area of ​​the cup cylinder.

[0009] Multiple support units, each corresponding to a rotating base, include a support column fixed to the rotating base, an air blowing component, and a side-top structure connected to the rotating base. The outer wall of the support column has multiple air holes. The air blowing component communicates with the air holes and blows air into them. The side-top structure extends and retracts radially along the support column and abuts against the inner wall of the cup corresponding to the printing area.

[0010] A curing unit is disposed on one side of the rotating frame along the second direction and is used to cure the pattern.

[0011] In one possible implementation, the side-top structure includes:

[0012] The adjusting seat is slidably connected to the support column, and the adjusting seat moves along the axial direction of the support column;

[0013] An adjusting component is connected to the adjusting seat and is used to drive the adjusting seat to move.

[0014] A variable strip includes a middle strip and extension strips disposed on both sides of the middle strip. The extension strips are rotatably connected to the middle strip. The extension strips rotate about the axial direction of the support column. An elastic element is installed at the rotatable connection between the extension strips and the middle strip. The elastic element has a preload force that causes the extension strips to move away from the support column. The extension strips include a plurality of sequentially connected extension portions. Adjacent extension strips are rotatably connected. The extension portions rotate about the axial direction of the support column. A deformation element is installed at the rotatable connection between adjacent extension portions. The deformation element has a preload force that causes the extension strips to move away from the support column.

[0015] The telescopic component is fixed between the intermediate strip and the adjusting seat, and the telescopic component extends and retracts radially along the support column;

[0016] A limiting piece, rotatably connected to the intermediate strip, the limiting piece rotating about the axial direction of the support column; and

[0017] The displacement element is connected to the limiting plate and is used to drive the limiting plate to rotate.

[0018] In one possible implementation, the limiting piece has a plurality of ejection slots corresponding one-to-one with the extension portion, an ejection strip is slidably disposed in the ejection slot, the ejection strip slides radially along the support column, an ejection member is fixedly connected between the ejection strip and the limiting piece, and the ejection member has a preload force that causes the ejection strip to extend out of the ejection slot.

[0019] In one possible implementation, a flexible pad is fixed to the top surface of the extension.

[0020] In one possible implementation, a feeding unit is provided on one side of the rotating frame, and the feeding unit and the rotating frame are arranged along the second direction;

[0021] The feeding unit includes:

[0022] The feeding rack is fixedly connected to the base;

[0023] A feeding seat, rotatably connected to the feeding rack, rotates about the first direction as its rotation axis. The feeding seat has a feeding slot for holding cups and has a horizontal cup-placement position and an inclined cup-removal position.

[0024] The feeding component is connected to the feeding seat and is used to drive the feeding seat to switch between the cup placement position and the cup unloading position.

[0025] In one possible implementation, the feeding unit further includes:

[0026] Multiple feeding rollers enclose a feeding area, which is connected to the outlet of the feeding trough. The feeding rollers are rotatably connected to the feeding frame. The rotation axis of the feeding rollers is parallel to the extension direction of the feeding seat when it is in the lower cup position. A spiral protrusion is fixed to the outer periphery of each feeding roller.

[0027] A drive unit is connected to the feeding roller and is used to drive the feeding roller to rotate.

[0028] In one possible implementation, the inner wall of the feeding trough is provided with two separation troughs, which are opened opposite to each other, and a separation unit is provided in the separation trough;

[0029] The separation unit includes:

[0030] A rotating column is rotatably connected to the inner wall of the separation tank, and the rotation axis of the rotating column is perpendicular to the plate surface of the feeding seat;

[0031] Multiple separation plates are fixedly attached to the outer periphery of the rotating column at intervals;

[0032] A separator, drively connected to the rotating column, and used to drive the rotating column to rotate; and

[0033] An adsorption element is disposed above the feeding unit and is fixed to the feeding rack. The adsorption element is used to adsorb the solid cup cylinder.

[0034] In one possible implementation, the feeding unit further includes:

[0035] Two lifting bars are disposed opposite each other in the feeding trough. The lifting bars are slidably connected to the inner wall of the feeding trough. The moving direction of the lifting bars is perpendicular to the plate surface of the feeding seat. A reset member is fixedly connected between the lifting bars and the feeding seat. The reset member has a pre-tightening force that causes the lifting bars to move outward from the feeding trough. The lifting bars have a through groove.

[0036] Two guide plates correspond one-to-one with the two lifting bars. The bottom of the guide plate is slidably connected to the inner wall of the feeding trough, and the top of the guide plate is rotatably connected to the lifting bar. The guide plate, the lifting bar, and the feeding trough together form a pressure-changing cavity.

[0037] A pneumatic component, connected to the transformer chamber, is used to pressurize or evacuate the transformer chamber.

[0038] A transverse partition, fixedly connected between the guide plate and the inner wall of the feeding trough, is retractable; and

[0039] A sealing structure, corresponding one-to-one with the guide plate, is disposed between the guide plate and the inner wall of the feeding trough, and is used to block the transformer cavity.

[0040] In one possible implementation, the blocking structure includes:

[0041] A flexible cover is fixedly attached to the inner wall of the feeding trough, the guide plate, and the lifting block; the flexible cover has a cavity inside.

[0042] A telescopic rod is provided in the telescopic cavity, the telescopic rod abuts against the inner wall of the feeding trough, the telescopic rod's telescopic direction is perpendicular to the extension direction of the feeding seat, and the telescopic rod is fixedly connected to the flexible cover.

[0043] In one possible implementation, a feeding unit is provided on one side of the rotating frame, and the feeding unit and the rotating frame are arranged along the second direction;

[0044] The feeding unit includes:

[0045] Material unloading conveyor;

[0046] Two separating conveyors are positioned opposite each other on either side of the unloading conveyor, with a gap between the two separating conveyors allowing the support unit to pass through; and

[0047] Two side extensions are provided on opposite sides of the two separating conveyors. The side extensions are fixed between the unloading conveyor body and the separating conveyor body, and the side extensions extend and retract along the first direction.

[0048] The rapid printing UV curing equipment for plastic paper cups provided by this invention, compared with the prior art, utilizes the air blowing component in the support column to blow high-pressure gas into the inside of the cup cylinder, forming uniform radial pressure through the air holes, so that the inner wall of the cup cylinder is stably pressed against the support unit. This flexible pneumatic fixing method can adapt to cup cylinders of various diameter specifications without replacing mechanical parts, achieving high versatility and rapid production changeover capability, and greatly reducing equipment adjustment time and spare parts costs. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the structure of a rapid printing UV curing device for plastic paper cups according to an embodiment of the present invention;

[0050] Figure 2 This is a schematic diagram illustrating the structure of the support unit in an embodiment of the present invention;

[0051] Figure 3 This is a partial cross-sectional view illustrating the variable sheet in an embodiment of the present invention;

[0052] Figure 4 for Figure 1 A magnified view of part A in the middle;

[0053] Figure 5 This is a partial schematic diagram illustrating the feeding unit in an embodiment of the present invention;

[0054] Figure 6 This is a schematic diagram illustrating the structure of the diaphragm in an embodiment of the present invention;

[0055] Figure 7 This is a cross-sectional view illustrating the blocking unit in an embodiment of the present invention;

[0056] Figure 8 This is a schematic diagram illustrating the structure of the side extension member in an embodiment of the present invention.

[0057] Explanation of reference numerals in the attached figures:

[0058] 10. Rotating unit; 101. Base; 102. Rotating frame; 103. Rotating seat;

[0059] 20. Support unit; 201. Support column; 202. Adjustment seat; 203. Adjustment component; 204. Variable piece; 2041. Intermediate strip; 2042. Extension strip; 20421. Extension section; 205. Telescopic component; 206. Limiting piece; 2061. Ejection groove; 2062. Ejection strip; 2063. Ejector component;

[0060] 30. Feeding unit; 301. Feeding rack; 302. Feeding seat; 3021. Feeding trough; 3022. Separation trough; 303. Feeding roller; 3031. Protrusion; 304. Lifting bar; 305. Guide plate; 306. Horizontal partition; 307. Flexible cover; 3071. Cavity; 308. Telescopic rod;

[0061] 40. Separation unit; 401. Rotating column; 402. Separation plate; 403. Adsorption element;

[0062] 50. Feeding unit; 501. Feeding conveyor; 502. Separating conveyor; 503. Side extension component. Detailed Implementation

[0063] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0064] Please refer to the following: Figures 1 to 8 This invention describes a rapid printing UV curing apparatus for plastic paper cups. The apparatus includes a rotating unit 10, a printing unit, multiple support units 20, and a curing unit. The rotating unit 10 includes a base 101, a rotating frame 102 rotatably connected to the base 101, a rotating component drively connected to the rotating frame 102, multiple rotating seats 103 rotatably connected to the outer periphery of the rotating frame 102, and rotating components drively connected to the rotating seats 103. The rotating component drives the rotating frame 102 to rotate about a first direction as its rotation axis; the rotating component is a servo motor. The rotating component also drives the rotating seats 103 to rotate about the radial direction of the rotating frame 102 as their rotation axis; the rotating component is a servo motor. The printing unit is located along the first direction on the rotating frame 102. On one side, a printing unit is used to imprint a pattern on the printing area of ​​the cup cylinder. The imprinting unit is a conventional printing technology, which will not be described in detail in this application. Multiple support units 20 correspond one-to-one with the rotating base 103. Each support unit 20 includes a support column 201 fixed to the rotating base 103, an air blowing component, and a side top structure connected to the rotating base 103. The outer wall of the support column 201 has multiple air holes. The air blowing component is connected to the air holes and is used to blow air into the air holes. The air blowing component is an air pump. The side top structure extends and retracts radially along the support column 201 and is used to abut against the inner wall of the cup cylinder corresponding to the printing area. A curing unit is located on one side of the rotating frame 102 along the second direction and is used to cure the pattern. The curing unit is a conventional curing technology, which will not be described in detail in this application.

[0065] It should be noted that multiple air holes are arranged in a row along the axial direction of the support column 201, and multiple rows of air holes are arranged around the central axis of the support column 201.

[0066] The rapid printing UV curing equipment for plastic paper cups provided in this embodiment involves the cup cylinder being fitted onto the support column 201. The air blowing component is activated, and high-pressure gas is blown from the air hole, causing the inner wall of the cup cylinder to be pressed against the gas, thereby fixing the cup cylinder to the rotating frame 102. The rotating component, once activated, drives the rotating frame 102 to rotate, thereby causing the cup cylinder to revolve. Simultaneously, the rotating component also drives the rotating seat 103 to rotate, thereby causing the cup cylinder to rotate on its own axis. When the cup cylinder is transported to the printing unit, the printing unit is activated to print the pattern onto the outer wall of the cup cylinder. After printing is completed, the rotating frame 102 continues to rotate. At this time, the cup cylinder passes through the curing unit, where ultraviolet light emitted by the curing unit irradiates the pattern on the surface of the cup cylinder, causing the UV ink to cross-link and cure instantly, forming a strong and durable pattern.

[0067] Compared with existing technologies, the high-pressure gas is blown into the cup cylinder by the air blowing component in the support column 201. The uniform radial pressure is formed through the air holes, so that the inner wall of the cup cylinder is stably pressed against the support unit 20. This flexible pneumatic fixing method can adapt to cup cylinders of various diameter specifications without replacing mechanical parts, achieving high versatility and rapid production changeover capability, and greatly reducing equipment adjustment time and spare parts costs. At the same time, during printing, the side top structure presses against the cup cylinder in the printing area, thereby reducing the cup cylinder deformation caused by gas compressibility and ensuring printing accuracy.

[0068] In some embodiments, the side-top structure includes an adjusting seat 202, an adjusting member 203, a variable plate 204, a telescopic member 205, a limiting plate 206, and a displacement member; the adjusting seat 202 is slidably connected to the support column 201, and the adjusting seat 202 moves along the axial direction of the support column 201; the adjusting member 203 is throttle connected to the adjusting seat 202 and is used to drive the adjusting seat 202 to move, and the adjusting member 203 is a servo motor; the variable plate 204 includes a middle strip 2041 and extension strips 2042 disposed on both sides of the middle strip 2041, the extension strips 2042 are rotatably connected to the middle strip 2041, the extension strips 2042 are rotated about the axial direction of the support column 201, and an elastic member is installed at the rotatable connection between the extension strips 2042 and the middle strip 2041, the elastic member has a preload force that causes the extension strips 2042 to move away from the support column 201, and the elastic force... The extension bar 2042 comprises multiple sequentially connected extension portions 20421, with adjacent extension bars 2042 rotatably connected. The extension portion 20421 rotates about the axial direction of the support column 201. A deformation member is installed at the rotatable connection between adjacent extension portions 20421. The deformation member has a preload force that causes the extension bar 2042 to move away from the support column 201. The deformation member is a torsion spring. The telescopic member 205 is fixed between the intermediate bar 2041 and the adjusting seat 202. The telescopic member 205 extends and retracts radially along the support column 201. The telescopic member 205 is a telescopic cylinder, hydraulic cylinder, or electric cylinder. The limiting plate 206 is rotatably connected to the intermediate bar 2041. The limiting plate 206 rotates about the axial direction of the support column 201. The displacement member is drivenly connected to the limiting plate 206 and is used to drive the limiting plate 206 to rotate. The displacement member is a servo motor.

[0069] After the cup is fitted with the support column 201, the telescopic component 205 starts to push the variable piece 204 towards the inner wall of the cup. When the variable piece 204 contacts the inner wall of the cup, the telescopic component 205 stops, thereby supporting the printing area.

[0070] When the inner diameter of the cup changes, the displacement component activates to drive the limiting piece 206 away from the variable piece 204. At this time, the extension 20421 is fully extended. Then, according to the inner diameter of the cup, the corresponding extension 20421 is bent so that the working area of ​​the variable piece 204 matches the inner wall of the cup. Finally, the displacement component activates to drive the limiting piece 206 back to its original position, thereby keeping the working area of ​​the variable piece 204 unchanged.

[0071] When the printing position changes, the circumferential position of the variable piece 204 can be changed by rotating the rotating seat 103, and the axial position of the variable piece 204 can be changed by extending or retracting the telescopic member 205, thereby adapting to the printing area at different positions.

[0072] In some embodiments, the limiting piece 206 has a plurality of ejection grooves 2061 corresponding one-to-one with the extension portion 20421. An ejection strip 2062 is slidably disposed in the ejection groove 2061. The ejection strip 2062 slides radially along the support column 201. An ejector 2063 is fixedly connected between the ejection strip 2062 and the limiting piece 206. The ejector 2063 has a preload force that causes the ejection strip 2062 to extend out of the ejection groove 2061. The ejector 2063 is a spring or a spring rod.

[0073] When there is a bent extension 20421 at the position of the ejector bar 2062, the extension 20421 squeezes the corresponding ejector bar 2062, causing the ejector bar 2062 to be retracted into the ejector groove 2061. At this time, the ejector 2063 is in a compressed state. When there is no bent extension 20421 at the position of the ejector bar 2062, the ejector 2063 drives the ejector bar 2062 to extend out of the ejector groove 2061 and abut against the back of the extension 20421 in the working area, thereby providing support for the extension 20421 in the working area.

[0074] In some embodiments, a flexible pad is fixed to the top surface of the extension 20421.

[0075] The gap between the extension 20421 and the inner wall of the cup is filled by a flexible pad, thereby improving the fit between the extension 20421 and the inner wall of the cup.

[0076] In some embodiments, a feeding unit 30 is provided on one side of the rotating frame 102, and the feeding unit 30 and the rotating frame 102 are arranged along a second direction.

[0077] The feeding unit 30 includes a feeding rack 301, a feeding seat 302, and a feeding component; the feeding rack 301 is fixedly connected to the base 101; the feeding seat 302 is rotatably connected to the feeding rack 301, and the feeding seat 302 rotates about a first direction as the rotation axis. The feeding seat 302 has a feeding groove 3021 for holding cups, and the feeding seat 302 has a horizontal cup-placing position and an inclined cup-dropping position; the feeding component is driven to the feeding seat 302 and is used to drive the feeding seat 302 to switch between the cup-placing position and the cup-dropping position.

[0078] The loading unit initiates the rotation of the loading seat 302, smoothly transitioning it from a horizontal cup-placement position to a preset inclined cup-dropping position. At this inclined angle, the cup, under its own weight, automatically slides along the inclined surface of the loading groove 3021 onto the support unit 20. Once the cup is successfully received, the loading unit drives the loading seat 302 to rotate in the opposite direction, resetting it to the horizontal cup-placement position, ready for the next round of loading operations. This cycle repeats, achieving continuous and seamless automated loading.

[0079] By precisely switching between two stations—horizontal cup placement and tilted cup lowering—operational convenience and safety are greatly improved. Operators can easily and accurately place cups into the feeding trough 3021 in a stable horizontal position without having to risk alignment operations while the equipment is running, significantly reducing labor intensity and skill requirements.

[0080] In some embodiments, the feeding unit 30 further includes a plurality of feeding rollers 303 and a driving member; the plurality of feeding rollers 303 surround to form a feeding area, the feeding area is connected to the outlet of the feeding trough 3021, the feeding rollers 303 are rotatably connected to the feeding frame 301, the rotation axis of the feeding rollers 303 is parallel to the extension direction of the feeding seat 302 when it is in the lower cup position, and the outer periphery of the feeding rollers 303 is fixedly connected with spiral protrusions 3031; the driving member is drivenly connected to the feeding rollers 303 and is used to drive the feeding rollers 303 to rotate, and the driving member is a servo motor.

[0081] It should be noted that the driving component corresponds one-to-one with the feeding roller 303. The driving component is adsorbed and connected to the feeding rack 301, such as by vacuum adsorption or electromagnetic adsorption, thereby determining the area of ​​the feeding area according to the diameter of the cup.

[0082] The drive unit starts, causing all the feeding rollers 303 to rotate synchronously. As the spiral protrusions 3031, fixed to the outer circumference of the feeding rollers 303, rotate, their spiral surfaces continuously contact the outer wall of the cup. Because the protrusions 3031 are spiral-shaped, they generate forces in both the axial and circumferential directions. This resultant force "pushes" the cups, causing them to move smoothly and directionally along the predetermined conveying path (i.e., the center of the feeding area). Throughout the process, the spiral protrusions 3031 act like a rotating screw pushing a nut, pushing the cups one after another towards the support unit 20, completing the feeding handover.

[0083] In some embodiments, the inner wall of the feeding trough 3021 is provided with two separation troughs 3022, which are opened opposite to each other, and a separation unit 40 is provided in the separation trough 3022.

[0084] The separation unit 40 includes a rotating column 401, multiple separation plates 402, a separation element, and an adsorption element 403. The rotating column 401 is rotatably connected to the inner wall of the separation tank 3022, and the rotation axis of the rotating column 401 is perpendicular to the plate surface of the loading seat 302. Multiple separation plates 402 are fixedly connected to the outer periphery of the rotating column 401 at intervals. The separation element is drivenly connected to the rotating column 401 and is used to drive the rotating column 401 to rotate. The separation element is a servo motor. The adsorption element 403 is located above the loading unit 30 and is fixedly connected to the loading rack 301. The adsorption element 403 is used to adsorb the solid cup. The adsorption element 403 is a vacuum electric suction cup.

[0085] When feeding is required, the separator is activated, driving the rotating column 401 to rotate. The separator plate 402, which is fixed to the outer periphery of the rotating column 401, then performs a circular motion. During the rotation, the separator plate 402 inserts into the gap between the first and second cups, using mechanical force to push the outermost cup away from the stack of cups.

[0086] At the same time, the adsorption component 403 located above the stack of cups continues to work, generating adsorption force, like an invisible seat belt, adsorbing and fixing the upper cups as a whole, effectively preventing them from falling down with the cups at the ends.

[0087] The separated cups slide out of the outlet of the feeding trough 3021 under the action of gravity and enter the feeding area composed of the feeding rollers 303. Then, the rotating column 401 drives the separating plate 402 to rotate back to its original position to prepare for the next separation action, while the adsorption element 403 continues to adsorb until the next cup is separated, and then briefly releases to maintain the stacked state. This cycle is repeated to achieve precise and single-piece supply of cups.

[0088] In some embodiments, the feeding unit 30 further includes two lifting bars 304, two guide plates 305, a pneumatic component, a transverse partition 306, and a sealing structure; the two lifting bars 304 are disposed opposite each other in the feeding trough 3021, the lifting bars 304 are slidably connected to the inner wall of the feeding trough 3021, the moving direction of the lifting bars 304 is perpendicular to the plate surface of the feeding seat 302, a reset component is fixedly connected between the lifting bars 304 and the feeding seat 302, the reset component has a preload force that causes the lifting bars 304 to move outward of the feeding trough 3021, and the lifting bars 304 have through grooves; the two guide plates 305 correspond one-to-one with the two lifting bars 304, and the bottom of the guide plates 305 slides. A guide plate 305 is connected to the inner wall of the feeding trough 3021 and rotates along the top of the guide plate 305 to connect to the lifting bar 304. The guide plate 305, the lifting bar 304, and the feeding trough 3021 together form a pressure-transforming chamber. A pneumatic component is connected to the pressure-transforming chamber and is used to inflate or evacuate the pressure-transforming chamber. The pneumatic component is an air pump. A transverse partition 306 is fixed between the guide plate 305 and the inner wall of the feeding trough 3021. The transverse partition 306 is telescopic and divides the pressure-transforming chamber into an upper chamber and a lower chamber. The pneumatic component is located in the lower chamber. A sealing structure corresponds one-to-one with the guide plate 305 and is located between the guide plate 305 and the inner wall of the feeding trough 3021. It is used to seal the pressure-transforming chamber.

[0089] Specifically, the sealing structure includes a flexible cover 307 and a telescopic rod 308; the flexible cover 307 is fixedly connected to the inner wall of the feeding trough 3021, the guide plate 305 and the lifting block, and a cavity 3071 is opened inside the flexible cover 307; the telescopic rod 308 is located in the telescopic cavity, the telescopic rod 308 abuts against the inner wall of the feeding trough 3021, the telescopic direction of the telescopic rod 308 is perpendicular to the extension direction of the feeding seat 302, and the telescopic rod 308 is fixedly connected to the flexible cover 307.

[0090] After the pneumatic component inflates the lower cavity, the gas gradually accumulates in the lower cavity. The gas will compress the bottom of the guide plate 305, causing the bottoms of the two guide plates 305 to move closer together. At the same time, the tops of the two guide plates 305 will drop, thus reducing the distance between the two guide plates 305. When the pneumatic component evacuates the transformer cavity, it causes the bottoms of the two guide plates 305 to move away from each other, while the tops of the two guide plates 305 will rise, thus increasing the distance between the two guide plates 305.

[0091] By adjusting the spacing between the two guide plates 305, cups of different diameters can be adapted; the transformer cavity is sealed by the flexible cover 307, while adapting to the positional changes of the lifting block and the guide plate 305.

[0092] When the lifting block descends, the telescopic rod 308 is in a retracted state; when the lifting block rises, the telescopic rod 308 is in an extended state. The height of the flexible cover 307 is changed by the telescopic rod 308, and at the same time, the telescopic rod 308 abuts the outside of the flexible cover 307 against the inner wall of the feeding trough 3021.

[0093] It should be noted that the cavity 3071 can also be connected to a pneumatic component, and the air volume in the cavity 3071 can be adjusted by the pneumatic component to adapt to changes in the height of the flexible cover 307.

[0094] In some embodiments, a feeding unit 50 is provided on one side of the rotating frame 102, and the feeding unit 50 and the rotating frame 102 are arranged along a second direction.

[0095] The unloading unit 50 includes an unloading conveyor 501, two separating conveyors 502, and two side extensions 503; the two separating conveyors 502 are arranged opposite each other on both sides of the unloading conveyor 501, and a gap is provided between the two separating conveyors 502 for the support unit 20 to pass through; the two side extensions 503 are arranged on the opposite side of the two separating conveyors 502, and the side extensions 503 are fixed between the body of the unloading conveyor 501 and the body of the separating conveyors 502, and the side extensions 503 extend and retract along a first direction.

[0096] The support unit 20 carrying the cup enters the gap reserved between the two separating conveyors 502, and the unloading conveyor 501 and the two separating conveyors 502 start running simultaneously. The two separating conveyors 502 drive the cup to detach from the support column 201, and then the cup is smoothly transported away by the synchronously running unloading conveyor belt, completing the unloading.

[0097] Throughout the process, the side extension 503 pre-adjusts the positions of the two separating conveyors 502 according to the diameter of the cup currently being produced, forming a conveying channel that matches the diameter of the cup.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rapid printing UV curing device for plastic paper cups, characterized in that, include: A rotating unit includes a base, a rotating frame rotatably connected to the base, a rotating component drively connected to the rotating frame, a plurality of rotating seats rotatably connected to the outer periphery of the rotating frame, and a rotating component drively connected to the rotating seats. The rotating component is used to drive the rotating frame to rotate about a first direction as a rotation axis, and the rotating component is used to drive the rotating seats to rotate about the radial direction of the rotating frame as a rotation axis. The printing unit is disposed on one side of the rotating frame along the first direction and is used to print patterns on the printing area of ​​the cup cylinder. Multiple support units are provided, each corresponding to a rotating base. Each support unit includes a support column fixed to the rotating base, an air blowing component, and a side-top structure connected to the rotating base. The outer wall of the support column has multiple air holes. The air blowing component is connected to the air holes and is used to blow air into the air holes. The side-top structure extends and retracts radially along the support column and is used to abut against the inner wall of the cup corresponding to the printing area. as well as A curing unit is disposed on one side of the rotating frame along the second direction and is used to cure the pattern.

2. The rapid printing UV curing equipment for plastic paper cups as described in claim 1, characterized in that, The side-top structure includes: The adjusting seat is slidably connected to the support column, and the adjusting seat moves along the axial direction of the support column; An adjusting component is connected to the adjusting seat and is used to drive the adjusting seat to move. A variable strip includes a middle strip and extension strips disposed on both sides of the middle strip. The extension strips are rotatably connected to the middle strip. The extension strips rotate about the axial direction of the support column. An elastic element is installed at the rotatable connection between the extension strips and the middle strip. The elastic element has a preload force that causes the extension strips to move away from the support column. The extension strips include a plurality of sequentially connected extension portions. Adjacent extension strips are rotatably connected. The extension portions rotate about the axial direction of the support column. A deformation element is installed at the rotatable connection between adjacent extension portions. The deformation element has a preload force that causes the extension strips to move away from the support column. The telescopic component is fixed between the intermediate strip and the adjusting seat, and the telescopic component extends and retracts radially along the support column; A limiting piece, rotatably connected to the intermediate strip, the limiting piece rotating about the axial direction of the support column; and The displacement element is connected to the limiting plate and is used to drive the limiting plate to rotate.

3. The rapid printing UV curing equipment for plastic paper cups as described in claim 2, characterized in that, The limiting piece has multiple ejection slots that correspond one-to-one with the extension portion. An ejection strip slides in the ejection slot and slides radially along the support column. An ejection member is fixedly connected between the ejection strip and the limiting piece. The ejection member has a pre-tightening force that causes the ejection strip to extend out of the ejection slot.

4. The rapid printing UV curing equipment for plastic paper cups as described in claim 2, characterized in that, A flexible pad is fixed to the top surface of the extension.

5. The rapid printing UV curing equipment for plastic paper cups as described in claim 1, characterized in that, A feeding unit is provided on one side of the rotating frame, and the feeding unit and the rotating frame are arranged along the second direction; The feeding unit includes: The feeding rack is fixedly connected to the base; A feeding seat, rotatably connected to the feeding rack, rotates about the first direction as its rotation axis. The feeding seat has a feeding slot for holding cups and has a horizontal cup-placement position and an inclined cup-removal position. The feeding component is connected to the feeding seat and is used to drive the feeding seat to switch between the cup placement position and the cup unloading position.

6. The rapid printing UV curing equipment for plastic paper cups as described in claim 5, characterized in that, The feeding unit also includes: Multiple feeding rollers enclose a feeding area, which is connected to the outlet of the feeding trough. The feeding rollers are rotatably connected to the feeding frame. The rotation axis of the feeding rollers is parallel to the extension direction of the feeding seat when it is in the lower cup position. A spiral protrusion is fixed to the outer periphery of each feeding roller. A drive unit is connected to the feeding roller and is used to drive the feeding roller to rotate.

7. The rapid printing UV curing equipment for plastic paper cups as described in claim 6, characterized in that, The inner wall of the feeding trough has two separation troughs, which are opened opposite each other, and a separation unit is provided in the separation trough; The separation unit includes: A rotating column is rotatably connected to the inner wall of the separation tank, and the rotation axis of the rotating column is perpendicular to the plate surface of the feeding seat; Multiple separation plates are fixedly attached to the outer periphery of the rotating column at intervals; A separator, drively connected to the rotating column, and used to drive the rotating column to rotate; and An adsorption element is disposed above the feeding unit and is fixed to the feeding rack. The adsorption element is used to adsorb the solid cup cylinder.

8. The rapid printing UV curing equipment for plastic paper cups as described in claim 5, characterized in that, The feeding unit also includes: Two lifting bars are disposed opposite each other in the feeding trough. The lifting bars are slidably connected to the inner wall of the feeding trough. The moving direction of the lifting bars is perpendicular to the plate surface of the feeding seat. A reset member is fixedly connected between the lifting bars and the feeding seat. The reset member has a pre-tightening force that causes the lifting bars to move outward from the feeding trough. The lifting bars have a through groove. Two guide plates correspond one-to-one with the two lifting bars. The bottom of the guide plate is slidably connected to the inner wall of the feeding trough, and the top of the guide plate is rotatably connected to the lifting bar. The guide plate, the lifting bar, and the feeding trough together form a pressure-changing cavity. A pneumatic component, connected to the transformer chamber, is used to pressurize or evacuate the transformer chamber. A transverse partition, fixedly connected between the guide plate and the inner wall of the feeding trough, is retractable; and A sealing structure, corresponding one-to-one with the guide plate, is disposed between the guide plate and the inner wall of the feeding trough, and is used to block the transformer cavity.

9. The rapid printing UV curing equipment for plastic paper cups as described in claim 8, characterized in that, The blocking structure includes: A flexible cover is fixedly attached to the inner wall of the feeding trough, the guide plate, and the lifting block; the flexible cover has a cavity inside. A telescopic rod is provided in the telescopic cavity, the telescopic rod abuts against the inner wall of the feeding trough, the telescopic rod's telescopic direction is perpendicular to the extension direction of the feeding seat, and the telescopic rod is fixedly connected to the flexible cover.

10. The rapid printing UV curing equipment for plastic paper cups as described in claim 1, characterized in that, A feeding unit is provided on one side of the rotating frame, and the feeding unit and the rotating frame are arranged along the second direction; The feeding unit includes: Material unloading conveyor; Two separating conveyors are positioned opposite each other on either side of the unloading conveyor, with a gap between the two separating conveyors allowing the support unit to pass through; and Two side extensions are provided on opposite sides of the two separating conveyors. The side extensions are fixed between the unloading conveyor body and the separating conveyor body, and the side extensions extend and retract along the first direction.

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