Plasma treatment apparatus for paper cup forming machine

Abstract

The application relates to a paper cup forming machine plasma treatment equipment and relates to the technical field of paperboard treatment equipment, and aims to realize uniform treatment of a paperboard surface. The equipment comprises an ion treatment host, a spraying motion system, a paperboard motion system and a paperboard motion support frame. The paperboard motion system comprises a paperboard suction device, a paperboard conveying reference frame, a paperboard transverse moving device and a paperboard conveying power device. The paperboard transverse moving device is driven by a paperboard transverse moving motor to slide an eccentric shaft in a traction long hole of a traction frame, drives two paperboard transverse moving extension rods to reciprocatingly extend and retract, further drives flexible supporting legs to alternately deflect, and pushes the paperboard transverse moving frame to reciprocatingly transversely move in a direction perpendicular to the deflection channel. The ion treatment host is independently transversely moved, is matched with longitudinal conveying and transverse swinging of the paperboard, and realizes overall and uniform scanning of the plasma on the paperboard surface. The application has the advantages of compact structure, accurate transmission, stable operation, and effectively improved consistency and treatment efficiency of the paperboard surface treatment.

Description

Technical Field

[0001] This invention relates to the field of paperboard processing equipment technology, and in particular to a plasma processing device for a paper cup forming machine. Background Technology

[0002] Surface treatment of cardboard is an essential step in paper cup production (such as improving printing adhesion, coating bonding, and edge sealing). Plasma surface treatment technology, due to its advantages of being environmentally friendly, efficient, and operating at low temperatures, is increasingly being applied to the paper cup forming industry. However, existing plasma treatment equipment in paper cup forming machines still has significant shortcomings: the effective range of plasma is limited, and the cardboard only moves in a single direction during transport, making it difficult to achieve comprehensive and uniform surface modification across the width, easily leading to localized over-treatment or under-treatment; simultaneously, there are posture deviations during cardboard transport, and existing equipment lacks adaptive adjustment capabilities, failing to guarantee the stability of the treatment effect.

[0003] In addition, achieving coordinated operation of longitudinal paperboard conveying, transverse oscillation, and plasma scanning within a limited space is also a technical challenge that urgently needs to be solved. Summary of the Invention

[0004] To overcome the technical defects of the existing technology, the present invention provides a plasma treatment device for a paper cup forming machine to achieve uniform treatment.

[0005] The technical solution adopted in this invention is: A plasma treatment device for a paper cup forming machine includes an ion treatment host, a jet motion system, a paperboard motion system, and a paperboard motion support frame. The ion treatment host is mounted on the jet motion system, and the paperboard motion support frame is mounted below the jet motion system. The paperboard motion system includes a paperboard suction device, a paperboard conveying reference frame, a paperboard traversing device, and a paperboard conveying power unit. The paperboard conveying reference frame is mounted on the paperboard conveying power unit. The paperboard motion support frame has a deflection channel. The paperboard traversing device includes a paperboard traversing frame, a paperboard traversing reference tube, two paperboard traversing extension rods, and two flexible support legs. The paperboard suction device is mounted on the paperboard traversing reference tube. The paperboard traversing frame is slidably mounted on the paperboard conveying reference frame in the horizontal direction. The sliding direction of the paperboard traversing frame is perpendicular to the direction of the deflection channel. The ion treatment host points upwards towards the deflection channel. The paperboard traversing reference tube is mounted on the paperboard traversing reference tube. On the frame, the cardboard transverse reference tube is vertically arranged. A cardboard transverse motor is installed at the bottom of the cardboard transverse frame. An eccentric shaft extending into the cardboard transverse reference tube is installed at the output end of the cardboard transverse motor. Two cardboard transverse extension rods are slidably installed on the cardboard transverse reference tube in the horizontal direction. The two cardboard transverse extension rods protrude from the side wall of the cardboard transverse reference tube respectively. A traction frame is installed between the two cardboard transverse extension rods. A traction elongated hole arranged along the deflection channel is formed in the traction frame. The width of the traction elongated hole is the same as the diameter of the eccentric shaft. The eccentric shaft is slidably installed in the traction elongated hole. Two flexible support legs are rotatably installed at the ends of the cardboard transverse extension rods. The rotation axis of the flexible support legs and the rotation axis of the eccentric shaft are both vertically arranged. A return torsion spring is provided between the flexible support legs and the cardboard transverse extension rods. When the return torsion spring is in the free state, the direction of the flexible support legs is parallel to the direction of the cardboard transverse extension rods.

[0006] Preferably, the flexible support leg is provided with a supporting arc surface, and the axis of the supporting arc surface coincides with the rotation axis of the flexible support leg.

[0007] Preferably, the cardboard suction device is provided with at least two suction cups.

[0008] Preferably, the cardboard conveying power device includes a conveying slider, a conveying slide rail, and a conveying cylinder. The conveying slider is slidably mounted on the conveying slide rail, and the conveying slide rail is arranged along the deflection channel. The cardboard conveying reference frame is mounted on the conveying slider, and the conveying cylinder is fixedly mounted on the paper cup forming machine. The output end of the conveying cylinder is mounted on the cardboard conveying reference frame.

[0009] Preferably, the ion processing host includes an ion generating housing, a plasma generator, and a rotating nozzle system. The ion generating housing is equipped with a power module and a control module. The plasma generator is disposed inside the ion generating housing and electrically connected to the power module. The plasma generator ionizes the working gas to generate plasma. The rotating nozzle system is rotatably mounted outside the ion generating housing and is connected to the plasma generator.

[0010] Preferably, the jetting motion system includes a jetting transverse beam and a jetting transverse slider. The jetting transverse slider slides along the jetting transverse beam. An ion transverse motor is provided on the jetting transverse beam. The jetting transverse slider and the ion transverse motor are driven by an ion transverse belt.

[0011] Preferably, a centering spring is installed on the cardboard transverse frame. The centering spring is installed between the cardboard conveying reference frame and the cardboard transverse frame. When the centering spring is in a free state, the centerline of the cardboard transverse reference tube is located in the middle of the deflection channel.

[0012] Preferably, when both the reset torsion spring and the centering spring are in a free state, the distance between the two flexible legs and the side of the deflection channel is 1 mm to 2 mm.

[0013] The beneficial effects of this invention are: By setting up a cardboard transverse movement device, and utilizing the sliding engagement between the eccentric shaft and the traction elongated hole on the traction frame, the rotational motion of the cardboard transverse movement motor is converted into the continuous reciprocating linear motion of the cardboard transverse movement extension rod. This drives the cardboard suction device to continuously oscillate laterally in a direction perpendicular to the deflection channel. Simultaneously, the ion treatment host can move independently laterally along with the jetting motion system. The combination of the longitudinal conveying and transverse oscillation of the cardboard, along with the rotational jetting of plasma, creates a cross-covering scanning path on the cardboard surface, effectively avoiding localized over-treatment or under-treatment, and ensuring a highly uniform surface modification effect across the entire cardboard sheet.

[0014] A flexible support leg is rotatably mounted at the end of the cardboard traverse extension rod, and works in conjunction with a return torsion spring. When the cardboard traverse extension rod extends, if the flexible support leg touches the side wall of the deflection channel, it can automatically deflect to avoid it; when the extension rod retracts, the return torsion spring causes the flexible support leg to automatically straighten, forming alternating support. This structure ensures that the cardboard traverse frame always receives flexible and effective lateral support as it slides back and forth within the deflection channel, guaranteeing smooth traverse movement while avoiding equipment wear or cardboard damage caused by rigid collisions.

[0015] The cardboard traversing device integrates the cardboard traversing motor, eccentric shaft, traction frame, and two cardboard traversing extension rods onto the cardboard traversing reference tube. The width of the traction elongated hole is consistent with the diameter of the eccentric shaft, ensuring backlash-free sliding transmission and precise, lag-free traversing movement. Simultaneously, the cardboard traversing extension rods protrude from the side wall of the reference tube, with their inner ends connected to the traction frame and their outer ends connected to flexible support legs. The highly integrated overall structure saves installation space and is suitable for placement within the limited space of a paper cup forming machine.

[0016] A centering spring is installed between the cardboard conveying reference frame and the cardboard transverse frame to ensure that the center line of the cardboard transverse reference tube is automatically located in the middle of the deflection channel in the non-working or initial state. This ensures that the initial position of the cardboard is consistent each time it enters the processing area, which facilitates connection with upstream and downstream processes. At the same time, it provides a basic positioning for symmetrical processing and avoidance, which is conducive to realizing fully automated continuous production.

[0017] The flexible outrigger features a supporting arc surface with its axis coinciding with the outrigger's rotation axis. This alignment ensures that the sidewall reaction force always passes through the center of rotation, preventing the generation of additional torque and maintaining a stable posture during support. Thrust can be transmitted without sliding. This design guarantees that the supporting arc surface remains in close contact with the deflection channel sidewall during deflection, converting sliding friction into adaptive rotational support. This significantly reduces frictional resistance, minimizes wear on the sidewall and outrigger, and improves the stability and lifespan of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0020] Figure 3 This is a schematic diagram of the structure when the flexible outrigger just enters the deflection channel.

[0021] Figure 4 This is a schematic diagram of the structure when the cardboard transverse reference tube is in the center of the deflection channel.

[0022] Figure 5 This is a schematic diagram of the structure when the cardboard transverse reference tube is in the skewed position of the deflection channel.

[0023] Explanation of reference numerals in the attached figures: 1. Ion processing main unit; 11. Ion generator housing; 12. Plasma generator; 13. Rotary nozzle system; 2. Jet motion system; 21. Jet transverse beam; 22. Jet transverse slider; 23. Ion transverse motor; 3. Cardboard Motion System; 31. Cardboard Pickup Device; 311. Suction Cup; 32. Cardboard Conveying Reference Frame; 33. Cardboard Conveying Power Unit; 331. Conveying Slider; 332. Conveying Rail; 35. Cardboard Lateral Movement Device; 351. Cardboard Lateral Movement Frame; 352. Cardboard Lateral Movement Reference Tube; 353. Cardboard Lateral Movement Extension Rod; 355. Flexible Support Leg; 3551. Supporting Arc Surface; 356. Cardboard Lateral Movement Motor; 357. Eccentric Shaft; 358. Traction Frame; 4. Cardboard motion support frame; 41. Deflection channel. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings: like Figure 1 — Figure 5 As shown, this embodiment provides a plasma treatment device for a paper cup forming machine, including an ion treatment host 1, a jet motion system 2, a paperboard motion system 3, and a paperboard motion support frame 4. The ion treatment host 1 is installed on the jet motion system 2, allowing the ion treatment host 1 to move with the jet motion system 2, flexibly adjusting the jet angle and position to adapt to different paperboard specifications. The paperboard motion support frame 4 is installed on the lower side of the jet motion system 2, providing a stable support platform for the paperboard and ensuring that the paperboard is at the correct height during the treatment process. The paperboard motion system 3 includes a paperboard suction device 31, a paperboard conveying reference frame 32, and a paperboard... The transverse transfer device 35 and the cardboard conveying power device 33 are responsible for gripping and positioning the cardboard, conveying it longitudinally, and moving it laterally, respectively, to achieve fully automatic loading and unloading. The cardboard conveying reference frame 32 is installed on the cardboard conveying power device 33. The cardboard moving support frame 4 has a deflection channel 41. The cardboard conveying reference frame 32 moves along the deflection channel 41 with the cardboard conveying power device 33, driving the cardboard into the processing area. The longitudinal direction mentioned above refers to the direction of the deflection channel 41, and the lateral direction refers to the direction perpendicular to the deflection channel 41, providing a guiding path for the cardboard and accommodating the reciprocating motion of the cardboard transverse transfer device 35.

[0025] The cardboard traversing device 35 includes a cardboard traversing frame 351, a cardboard traversing reference tube 352, two cardboard traversing extension rods 353, and two flexible support legs 355. A cardboard suction device 31 is mounted on the cardboard traversing reference tube 352. The cardboard suction device 31 moves with the cardboard traversing reference tube 352, reliably adsorbing the cardboard and driving it to move synchronously. The top of the cardboard suction device 31 is 0.5 mm to 1 mm higher than the top of the cardboard moving support frame 4 to prevent the cardboard from colliding with the cardboard moving support frame 4. The cardboard traversing frame 351 is slidably mounted on the cardboard conveying reference frame 32 in the horizontal direction via a dovetail groove sliding pair, realizing the lateral displacement of the cardboard traversing frame 351 relative to the cardboard conveying reference frame 32, providing a base for scanning jetting. The sliding direction of the cardboard transverse frame 351 is perpendicular to the direction of the deflection channel 41, making the transverse movement of the cardboard orthogonal to the longitudinal conveying. This causes the plasma jet path to cross-cover the cardboard surface, improving the uniformity of the treatment. The ion treatment host 1 points to the upper side of the deflection channel 41 and jets plasma onto the cardboard surface within the deflection channel 41. The horizontal sliding of the cardboard transverse frame 351 changes the jet position of the ion treatment host 1, achieving uniform treatment and avoiding local over-treatment or under-treatment. This ensures that the overall modification effect on the cardboard surface is consistent. The cardboard transverse reference tube 352 is installed on the cardboard transverse frame 351 and is fixedly connected to the cardboard transverse frame 351 to ensure that the transverse movement is accurately transmitted to the cardboard suction device 31.

[0026] The cardboard transverse reference tube 352 is vertically positioned. The bottom of the cardboard transverse frame 351 is mounted on the cardboard transverse motor 356. An eccentric shaft 357, extending into the cardboard transverse reference tube 352, is eccentrically mounted at the output end of the cardboard transverse motor 356. The cardboard transverse reference tube 352 provides guidance for the horizontal extension of the cardboard transverse extension rod 353 and also guides the rotation of the output end of the cardboard transverse motor 356 around its vertical axis. Specifically, the output end of the cardboard transverse motor 356 is clearance-fitted with the cardboard transverse reference tube 352 to prevent the output end of the cardboard transverse motor 356 from skewing, ensuring smooth transverse movement of the cardboard transverse extension rod 353. The cardboard transverse motor 356 serves as the power source, driving the eccentric shaft 357 to rotate. A traction frame 358 is installed between the two cardboard transverse extension rods 353. The traction frame 358 has a traction elongated hole arranged along the deflection channel 41. The eccentric shaft 357 slides in the traction elongated hole, converting the rotational motion into the linear reciprocating motion of the cardboard transverse extension rod 353, generating a continuous reciprocating transverse motion. The two cardboard transverse extension rods 353 slide laterally through the side wall of the cardboard transverse reference tube 352 respectively. The two cardboard transverse extension rods 353 are slidably installed on the cardboard transverse reference tube 352 in the horizontal direction. The cardboard transverse extension rods 353 extend and retract laterally along the cardboard transverse reference tube 352, driving the corresponding flexible support leg 355 to move left and right. The outer end of the cardboard transverse extension rod 353 is connected to the flexible support leg 355, and the inner end is connected to the traction frame 358. The structure is compact. The traction frame 358 links the two cardboard transverse extension rods 353 together, ensuring that the flexible support legs 355 on both sides move synchronously.

[0027] The direction of the traction elongated hole is consistent with the deflection channel 41, ensuring that the eccentric shaft 357 drives the cardboard transverse extension rod 353 to move laterally when sliding. The width of the traction elongated hole is consistent with the diameter of the eccentric shaft 357. In engineering, it is usually impossible to achieve a precise consistency. Therefore, in this embodiment, it is also acceptable to achieve a clearance fit between the width of the traction elongated hole and the eccentric shaft 357, which facilitates the sliding of the eccentric shaft 357 in the traction elongated hole and ensures that the eccentric shaft 357 slides without clearance in the traction elongated hole, and the transmission is precise and without lag. The eccentric shaft 357 is slidably installed in the traction elongated hole. As the cardboard transverse motor 356 rotates, the eccentric shaft 357 pushes the traction frame 358 to reciprocate, realizing the continuous extension and retraction of the cardboard transverse extension rod 353. The two flexible support legs 355 are rotatably installed on the cardboard transverse extension rod through pins. At the end of rod 353, flexible support leg 355 can rotate around a vertical axis, actively deflecting and avoiding obstacles. The rotation axis of flexible support leg 355 and the rotation axis of eccentric shaft 357 are both vertically set and parallel to each other, ensuring that after the cardboard transverse extension rod 353 retracts, flexible support leg 355 can deflect and reset, facilitating alternating support from the two flexible support legs 355. A reset torsion spring is provided between flexible support leg 355 and cardboard transverse extension rod 353, providing a reset torque so that flexible support leg 355 automatically returns to its initial orientation after avoiding obstacles. When the reset torsion spring is in a free state, the orientation of flexible support leg 355 is parallel to the orientation of cardboard transverse extension rod 353, ensuring that flexible support leg 355 extends straight along the transverse direction during normal operation, effectively supporting the side wall of deflection channel 41.

[0028] Specifically, the flexible outrigger 355 is provided with a supporting arc surface 3551, which contacts the side wall of the deflection channel 41 to reduce friction and improve support stability. The axis of the supporting arc surface 3551 coincides with the rotation axis of the flexible outrigger 355, ensuring that the supporting arc surface 3551 always fits against the side wall when the flexible outrigger 355 rotates, making the support of the flexible outrigger 355 smooth and reducing resistance. After contacting the side wall of the deflection channel 41, the flexible outrigger 355 rotates freely around its own rotation axis to a stable support angle, and maintains a relatively static contact state with the side wall during lateral movement, transmitting thrust through static friction and avoiding wear and jamming caused by sliding friction.

[0029] Specifically, the cardboard suction device 31 is equipped with at least two suction cups 311, which enhances the reliability of gripping by multiple suction points and prevents the cardboard from slipping or shifting during lateral movement.

[0030] Specifically, the cardboard conveying power unit 33 includes a conveying slider 331, a conveying rail 332, and a conveying cylinder, forming a linear drive unit to provide power for the longitudinal conveying of cardboard. The conveying slider 331 is slidably mounted on the conveying rail 332. The conveying slider 331 moves smoothly along the conveying rail 332 to ensure accurate conveying direction. The conveying rail 332 is arranged along the deflection channel 41 to ensure that the longitudinal movement of the cardboard is consistent with the direction of the deflection channel 41, allowing it to smoothly enter and exit the processing area. The cardboard conveying reference frame 32 is mounted on the conveying slider 331. The cardboard conveying reference frame 32 moves with the conveying slider 331, driving the entire cardboard transverse movement device 35 to move longitudinally in sync. The conveying cylinder is fixedly mounted on the paper cup forming machine. As a fixed-end driving component, the conveying cylinder provides stable pushing and pulling force. The output end of the conveying cylinder is mounted on the cardboard conveying reference frame 32. The extension and retraction of the conveying cylinder directly controls the longitudinal position of the cardboard conveying reference frame 32, realizing cardboard conveying.

[0031] Specifically, the ion processing host 1 includes an ion generating housing 11, a plasma generator 12, and a rotating nozzle system 13. The ion generating housing 11 integrates a power supply and control system. The plasma generator 12 generates plasma, and the rotating nozzle system 13 performs rotating jetting. The ion generating housing 11 contains a power module and a control module, which provide high-voltage power to the plasma generator 12 and control its operating parameters to ensure stable plasma output. The plasma generator 12 is located inside the ion generating housing 11 and is electrically connected to the power module. The plasma generator 12 ionizes the working gas to generate highly reactive plasma. Generator 12 ionizes the working gas to generate plasma. The working gas, such as air or argon, is ionized under a high-voltage electric field to form a plasma stream containing free radicals and ions. Rotary nozzle system 13 is rotatably mounted outside ion generator housing 11 and connected to plasma generator 12. Rotary nozzle system 13 can rotate, causing the plasma to be ejected in a spiral jet manner, expanding the instantaneous processing range. The generated plasma is sprayed onto the surface of the workpiece to be processed in a rotating jet manner. The rotating jet increases the interaction area and time between the plasma and the paperboard, improving processing efficiency. Ion processing host 1 is a commercially available device and will not be described in detail here.

[0032] Specifically, the jetting motion system 2 includes a jetting transverse beam 21 and a jetting transverse slider 22. The jetting transverse beam 21 serves as a track, and the jetting transverse slider 22 drives the ion processing host 1 to slide along it. The jetting transverse slider 22 slides smoothly along the jetting transverse beam 21, achieving rapid positioning of the ion processing host 1 in the width direction. An ion transverse motor 23 is installed on the jetting transverse beam 21, which serves as a transverse drive source, providing the power for movement. The jetting transverse slider 22 and the ion transverse motor 23 are driven by an ion transverse belt. The belt drive is precise and has no gaps, ensuring accurate position control of the ion processing host 1 and realizing the movement of the ion processing host 1. The ion processing host 1 can move freely along the jetting transverse beam 21, cooperating with the transverse movement of the cardboard to achieve multi-dimensional coverage scanning.

[0033] Specifically, a centering spring is installed on the cardboard transverse frame 351. The centering spring provides elastic restoring force, so that the cardboard transverse frame 351 automatically centers when there is no external force. The centering spring is installed between the cardboard conveying reference frame 32 and the cardboard transverse frame 351. The extension and retraction of the centering spring controls the offset of the cardboard transverse frame 351. When the centering spring is in the free state, the center line of the cardboard transverse reference tube 352 is located in the middle of the deflection channel 41, ensuring that the cardboard is in the center of the deflection channel 41 in the initial state, which facilitates symmetrical handling and avoidance.

[0034] Specifically, when the reset torsion spring and the centering spring are both in a free state, the distance between the two flexible legs 355 and the side of the deflection channel 41 is 1 mm to 2 mm, leaving a small gap to avoid scratching during normal operation and to ensure that the flexible legs 355 can quickly contact the side wall after deflection to achieve alternating support of the two flexible legs 355.

[0035] The working process of this embodiment is as follows: In the initial state, the centering spring makes the cardboard transverse frame 351 position in the center of the deflection channel 41, and the reset torsion spring makes the two flexible support legs 355 parallel to the corresponding cardboard transverse extension rods 353 respectively. The cardboard suction device 31 adsorbs the cardboard to be processed through the suction cup 311 on it. The conveying cylinder of the cardboard conveying power device 33 is started, driving the conveying slider 331 to move along the conveying slide rail 332, driving the cardboard conveying reference frame 32 and the cardboard transverse device 35 installed on it to move along the deflection channel 41 as a whole, pulling the cardboard from outside the deflection channel 41 into the deflection channel 41.

[0036] Meanwhile, the cardboard transverse motor 356 continues to rotate, and its output eccentric shaft 357 slides within the traction elongated hole of the traction frame 358, driving the traction frame 358 to reciprocate. This, in turn, causes the two cardboard transverse extension rods 353 to reciprocate and extend horizontally on the cardboard transverse reference tube 352. During the extension of the cardboard transverse extension rods 353, the flexible support leg 355 moves with the extension rod. When the flexible support leg 355 touches the side wall of the deflection channel 41, it is deflected and avoided by the buffering effect of the reset torsion spring. When the cardboard lateral extension rod 353 retracts, the reset torsion spring causes the flexible support leg 355 to realign itself parallel to the direction of the extension rod. The two flexible support legs 355 alternately support the left and right side walls of the deflection channel 41, generating a periodic thrust that pushes the cardboard lateral frame 351, the cardboard lateral reference tube 352, and the cardboard suction device 31 mounted on it as a whole. This overcomes the elasticity of the centering spring and slides along the cardboard conveying reference frame 32, reciprocating laterally on the deflection channel 41, thereby causing the cardboard to swing laterally.

[0037] Meanwhile, the ion traverse motor 23 of the jet motion system 2 drives the jet traverse slider 22 to slide along the jet traverse beam 21 via the ion traverse belt, thereby moving the ion processing host 1 laterally. The plasma generator 12 of the ion processing host 1 ionizes the working gas to generate plasma, which, in conjunction with the longitudinal conveying and lateral oscillation of the cardboard, achieves comprehensive and uniform processing in the width direction of the cardboard. After the cardboard is processed, the cardboard conveying power unit 33 continues to advance, sending the processed cardboard out of the deflection channel 41, and then cyclically picks up the next cardboard for continuous operation.

[0038] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A plasma treatment device for a paper cup forming machine, characterized in that, The system includes an ion treatment unit, a jetting motion system, a cardboard motion system, and a cardboard motion support frame. The ion treatment unit is mounted on the jetting motion system, and the cardboard motion support frame is mounted below the jetting motion system. The cardboard motion system includes a cardboard suction device, a cardboard conveying reference frame, a cardboard traversing device, and a cardboard conveying power unit. The cardboard conveying reference frame is mounted on the cardboard conveying power unit. The cardboard motion support frame has a deflection channel. The cardboard traversing device includes a cardboard traversing frame, a cardboard traversing reference tube, two cardboard traversing extension rods, and two flexible support legs. The cardboard suction device is mounted on the cardboard traversing reference tube. The cardboard traversing frame is slidably mounted on the cardboard conveying reference frame in the horizontal direction. The sliding direction of the cardboard traversing frame is perpendicular to the direction of the deflection channel. The ion treatment unit points upwards towards the deflection channel. The cardboard traversing reference tube is mounted on the cardboard traversing frame. The reference tube is vertically positioned. A cardboard transverse moving frame is mounted on the bottom of a cardboard transverse moving motor. An eccentric shaft extending into the cardboard transverse moving reference tube is installed at the output end of the cardboard transverse moving motor. Two cardboard transverse moving extension rods are slidably mounted on the cardboard transverse moving reference tube in the horizontal direction. The two cardboard transverse moving extension rods protrude from the side wall of the cardboard transverse moving reference tube. A traction frame is installed between the two cardboard transverse moving extension rods. A traction elongated hole arranged along the deflection channel is formed in the traction frame. The width of the traction elongated hole is the same as the diameter of the eccentric shaft. The eccentric shaft is slidably mounted in the traction elongated hole. Two flexible support legs are rotatably mounted at the ends of the cardboard transverse moving extension rods. The rotation axis of the flexible support legs and the rotation axis of the eccentric shaft are both vertically positioned. A return torsion spring is provided between the flexible support legs and the cardboard transverse moving extension rods. When the return torsion spring is in the free state, the direction of the flexible support legs is parallel to the direction of the cardboard transverse moving extension rods.

2. The plasma treatment equipment for a paper cup forming machine according to claim 1, characterized in that, The flexible support leg is provided with a supporting arc surface, and the axis of the supporting arc surface coincides with the rotation axis of the flexible support leg.

3. The plasma treatment equipment for a paper cup forming machine according to claim 1, characterized in that, The cardboard suction device is equipped with at least two suction cups.

4. The plasma treatment equipment for a paper cup forming machine according to claim 1, characterized in that, The cardboard conveying power unit includes a conveying slider, a conveying slide rail, and a conveying cylinder. The conveying slider is slidably mounted on the conveying slide rail, and the conveying slide rail is arranged along the deflection channel. The cardboard conveying reference frame is mounted on the conveying slider, and the conveying cylinder is fixedly mounted on the paper cup forming machine. The output end of the conveying cylinder is mounted on the cardboard conveying reference frame.

5. The plasma treatment equipment for a paper cup forming machine according to claim 1, characterized in that, The ion processing host includes an ion generating housing, a plasma generator, and a rotating nozzle system. The ion generating housing is equipped with a power module and a control module. The plasma generator is located inside the ion generating housing and is electrically connected to the power module. The plasma generator ionizes the working gas to generate plasma. The rotating nozzle system is rotatably mounted outside the ion generating housing and is connected to the plasma generator.

6. The plasma treatment equipment for a paper cup forming machine according to claim 1, characterized in that, The jetting motion system includes a jetting transverse beam and a jetting transverse slider. The jetting transverse slider slides along the jetting transverse beam. An ion transverse motor is provided on the jetting transverse beam. The jetting transverse slider and the ion transverse motor are driven by an ion transverse belt.

7. The plasma treatment equipment for a paper cup forming machine according to claim 1, characterized in that, A centering spring is installed on the cardboard transverse frame. The centering spring is installed between the cardboard conveying reference frame and the cardboard transverse frame. When the centering spring is in the free state, the center line of the cardboard transverse reference tube is located in the middle of the deflection channel.

8. The plasma treatment equipment for a paper cup forming machine according to claim 1, characterized in that, When both the reset torsion spring and the centering spring are in a free state, the distance between the two flexible legs and the side of the deflection channel is 1 mm to 2 mm.

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