Atmospheric pressure plasma surface treatment method and device

Abstract

The invention relates to the technical field of plasma surface treatment, in particular to an atmospheric pressure plasma surface treatment method and device.The atmospheric pressure plasma surface treatment device comprises a U-shaped base, a plasma generation mechanism is fixedly connected to the upper end of the U-shaped base, and a conveying mechanism is arranged on the lower side of the plasma generation mechanism and arranged in the U-shaped base; the to-be-cleaned material is conveyed through the conveying mechanism, and atmospheric pressure plasmas are generated through the plasma generating mechanism; atmospheric pressure plasmas are generated through the plasma generating mechanism to clean materials conveyed by the conveying mechanism, meanwhile, the packaging film clamped by the guiding and positioning mechanism is pulled out through the film pulling mechanism, and when the conveying mechanism conveys the cleaned materials to the lower side of the film cutting mechanism, the film cutting mechanism cuts off the packaging film, so that the packaging film is cut off. And the cleaning device is arranged at the upper end of the material to protect the surface of the cleaned material and prevent dust impurities from falling onto the surface of the material.

Description

Technical Field

[0001] The present invention relates to the technical field of plasma surface treatment, and in particular to an atmospheric pressure plasma surface treatment method and device. Background Art

[0002] For example, the Chinese patent with announcement number CN214321176U discloses a large-area uniform microwave plasma cleaning machine, which includes a microwave transmission cavity and a plasma discharge cavity. A permanent magnet assembly is provided outside the transmission cavity, and the discharge cavity is connected to a vacuum unit. A quartz plate is provided between the transmission cavity and the discharge cavity to separate them. An array antenna connected in parallel is provided in the microwave transmission cavity, and left and right air inlets form flowing air under atmospheric pressure for heat dissipation.

[0003] However, the above scheme has the following shortcomings: in the above patent, after the discharge cavity, quartz glass plate, parallel array antenna, microwave transmission cavity and permanent magnet steel assembly are installed and sealed, a mechanical pump vacuum unit is used to evacuate the cavity, and argon working gas is introduced through the air inlet to the required pressure. The electromagnetic wave energy generated by the microwave source is transmitted in the transmission cavity through the parallel array antenna, and passes through the quartz glass plate into the low-pressure discharge cavity to excite and generate plasma. In the above patent, the discharge cavity needs to be evacuated by a mechanical pump vacuum unit before it can be used, and large-area uniform micro-nano plasma discharge cannot be achieved under atmospheric pressure. At the same time, the surface of the cleaned material is not protected, so that dust and impurities are easily attached to the surface of the cleaned material during transportation. For this reason, we introduce an atmospheric pressure plasma surface treatment method and device. Summary of the invention

[0004] The object of the present invention is to provide an atmospheric pressure plasma surface treatment method and device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: An atmospheric pressure plasma surface treatment device comprises a U-shaped base, wherein a plasma generating mechanism is fixedly connected to the upper end of the U-shaped base, a conveying mechanism is provided at the lower side of the plasma generating mechanism, the conveying mechanism is arranged in the U-shaped base, a material to be cleaned is conveyed by the conveying mechanism, atmospheric pressure plasma is generated by the plasma generating mechanism, and the material to be cleaned at the upper end of the conveying mechanism is cleaned by the generated atmospheric pressure plasma, a support plate is fixedly connected to the inner side of the U-shaped base, a U-shaped connecting plate is movably connected to the lower side of the support plate, an L-shaped connecting rod is fixedly connected to one side of the U-shaped connecting plate, and a packaging film roll is sleeved on the outer side of the L-shaped connecting rod; A guiding and positioning mechanism is provided on the inner side of the U-shaped connecting plate, and the packaging film is guided and clamped by the guiding and positioning mechanism. A film pulling mechanism is provided on one side of the guiding and positioning mechanism, and the packaging film clamped by the guiding and positioning mechanism is pulled out by the film pulling mechanism. A film cutting mechanism is provided on the inner side of the U-shaped connecting plate, and the packaging film is pulled out by the film pulling mechanism. When the conveying mechanism transports the cleaned material to the lower side of the film cutting mechanism, the film cutting mechanism cuts the packaging film and is arranged on the upper end of the material. Through grooves are provided on both sides of the U-shaped base.

[0006] Preferably, the plasma generating mechanism includes a connection box, which is fixedly connected to the upper end of the U-shaped base, and a plurality of high-voltage electrodes are arranged in the connection box. The upper ends of the high-voltage electrodes pass through the connection box and are connected to a high-voltage power supply, and the lower ends are inserted into microporous optical fibers. A plurality of the microporous optical fibers are fixedly connected to the lower end of the connection box, and the upper ends of the microporous optical fibers extend into the connection box, and the lower ends extend into the external environment. A gas mass flow controller is fixedly connected to one end of the connection box.

[0007] Preferably, the conveying mechanism includes a conveying belt, which is arranged in a U-shaped base. Two transmission rollers are provided on the inner side of the conveying belt. Both ends of the transmission rollers are movably connected in the U-shaped base. A transmission motor is fixedly connected to the outer side of the U-shaped base, and the output end of the transmission motor is fixedly connected to a transmission roller.

[0008] Preferably, the guiding and positioning mechanism includes two clamping rollers, both ends of the clamping rollers are movably connected to the slide, the slide is slidably connected to the sliding groove, the sliding groove is opened in the U-shaped connecting plate, and the packaging film is clamped between the two clamping rollers. One end of the slide is fixedly connected to a return spring, and the other end of the return spring is fixedly connected to the sliding groove, and a push switch is fixedly connected in one of the sliding grooves.

[0009] Preferably, the film pulling mechanism includes a U-shaped slide plate, which is movably connected in the U-shaped connecting plate. A pressure plate is provided on the inner side of the U-shaped slide plate. A plurality of T-shaped guide rods are fixedly connected to the upper end of the pressure plate. The T-shaped guide rods are movably connected in the U-shaped slide plate. A first telescopic cylinder is fixedly connected to the upper end of the U-shaped slide plate, and the output end of the first telescopic cylinder is fixedly connected to the pressure plate.

[0010] Preferably, both ends of the U-shaped skateboard are fixedly connected with sliding rods, the sliding rods are slidably connected in sliding grooves, the sliding grooves are opened on the inner side of the U-shaped connecting plate, and a dual-axis motor is fixedly connected to the inner side of the U-shaped skateboard. Both output ends of the dual-axis motor extend into the external environment and are fixedly connected to a transmission gear, the transmission gear is meshed in a tooth groove, and the tooth groove is opened on the inner side of the U-shaped connecting plate.

[0011] Preferably, the film cutting mechanism includes a connecting plate, two cutters are provided on the lower side of the connecting plate, heating plates are fixedly connected to the opposite surfaces of the two cutters, one of the cutters is fixedly connected to the lower end of the connecting plate, and the other cutter is fixedly connected to a T-shaped slider, the T-shaped slider is slidably connected to a T-shaped connecting groove, the T-shaped connecting groove is opened in the lower end of the connecting plate, a T-shaped screw rod is movably connected in the T-shaped connecting groove, a T-shaped slider is screwed to the outer side of the T-shaped screw rod, and one end of the T-shaped screw rod extends into the external environment.

[0012] Preferably, the upper end of the connecting plate is fixedly connected to a first T-shaped limit rod, the first T-shaped limit rod is movably connected in the U-shaped connecting plate, the upper end of the U-shaped connecting plate is fixedly connected to a second telescopic cylinder, the output end of the second telescopic cylinder is fixedly connected to the connecting plate, the upper end of the U-shaped connecting plate is fixedly connected to two second T-shaped limit rods, the second T-shaped limit rod is slidably connected in the support plate, the upper end of the support plate is fixedly connected to a third telescopic cylinder, and the output end of the third telescopic cylinder is fixedly connected to the U-shaped connecting plate.

[0013] In addition, in order to achieve the above object, the present invention also provides a treatment method for the atmospheric pressure plasma surface treatment device described above, comprising: S1. Turn on the transmission motor to drive the transmission roller to rotate, place the material to be cleaned on the upper end of the conveyor belt, and the conveyor belt drives the material to be cleaned to move. The discharge gas is introduced into the connection box through the gas mass flow controller, and the power is turned on to discharge. The gas passes through the microporous optical fiber with through holes to generate atmospheric pressure plasma. When the material to be cleaned moves to the lower end of several microporous optical fibers through the conveyor belt, the atmospheric pressure plasma emitted by several microporous optical fibers cleans the surface of the material to be cleaned; S2. Rotate the T-screw according to the length of the material, so that the T-sliding block drives the cutter connected thereto to move. When the lengths of the two cutters and the material to be cleaned are equal, stop rotating the T-screw, turn on the dual-axis motor to move the U-shaped slide plate to the left, and when the U-shaped slide plate contacts the clamping roller, the press switch is pressed, the pressure plate moves downward to clamp the packaging film, and the dual-axis motor rotates in the opposite direction, and the U-shaped slide plate drives the packaging film to move to the right; S3. When one end of the packaging film moves to the lower end of the cutter on the right, the U-shaped slide stops moving, and the connecting plate is driven downward by the second telescopic cylinder. The movement of the connecting plate drives the two cutters to move synchronously. When the cutter contacts the packaging film, the packaging film will be cut. The two ends of the cut packaging film will be heated to generate stickiness. The two cutters contact the two ends of the material downward, and the two ends of the packaging film will be stuck to the two ends of the material to protect the surface of the material.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention generates atmospheric pressure plasma through a plasma generating mechanism to clean the material conveyed by a conveying mechanism without vacuum operation, and realizes large-area uniform plasma discharge cleaning with air as a carrier gas under atmospheric pressure. At the same time, the packaging film clamped by the guiding and positioning mechanism is pulled out by a film pulling mechanism. When the conveying mechanism transports the cleaned material to the lower side of the film cutting mechanism, the film cutting mechanism cuts the packaging film and is arranged on the upper end of the material to protect the surface of the cleaned material and prevent dust and impurities from falling onto the surface of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 2 It is a schematic diagram of the side section structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the U-shaped connecting plate of the present invention; Figure 4 This is a schematic diagram of the connection relationship between the slide plate and the clamping roller of the present invention; Figure 5 It is a cross-sectional structural schematic diagram of the connection relationship between the T-shaped screw rod and the T-shaped connecting groove of the present invention; Figure 6 This is a schematic diagram of the main structure of the connection relationship between the pressing plate and the U-shaped sliding plate of the present invention; Figure 7 It is a cross-sectional structural schematic diagram of the connection relationship between the dual-axis motor and the U-shaped slide plate of the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the connection relationship between the U-shaped connecting plate and the clamping roller of the present invention; Fig. 9 It is a three-dimensional structural schematic diagram of the connection relationship between the U-shaped connecting plate and the L-shaped connecting rod of the present invention.

[0016] In the figure: 1, connection box; 2, microporous optical fiber; 3, through groove; 4, U-shaped base; 5, transmission roller; 6, transmission crawler; 7, first T-shaped limit rod; 8, transmission motor; 9, U-shaped connection plate; 10, gas mass flow controller; 11, T-shaped slider; 12, T-shaped lead screw; 13, T-shaped connection groove; 14, high voltage power supply; 15, high voltage electrode; 16, packaging film roll; 17, second telescopic cylinder; 18, third telescopic cylinder; 1 9. Second T-type limit rod; 20. L-type connecting rod; 21. Connecting plate; 22. First telescopic cylinder; 23. Transmission gear; 24. Sliding rod; 25. Pressing plate; 26. U-type sliding plate; 27. Tooth groove; 28. Sliding groove; 29. ​​Clamping roller; 30. Press switch; 31. Sliding groove; 32. T-type guide rod; 33. Dual-axis motor; 34. Sliding plate; 35. Support plate; 36. Return spring; 37. Cutter; 38. Heating plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-9 , the present invention provides a technical solution: Embodiment 1: An atmospheric pressure plasma surface treatment device comprises a U-shaped base 4, the upper end of the U-shaped base 4 is fixedly connected to a plasma generating mechanism, the plasma generating mechanism comprises a connecting box 1, the connecting box 1 is fixedly connected to the upper end of the U-shaped base 4, a plurality of high-voltage electrodes 15 are arranged in the connecting box 1, the upper ends of the high-voltage electrodes 15 pass through the connecting box 1 and are connected to a high-voltage power supply 14, and the lower ends are inserted into a microporous optical fiber 2, a plurality of microporous optical fibers 2 are fixedly connected to the lower end of the connecting box 1, the upper ends of the microporous optical fibers 2 extend into the connecting box 1, and the lower ends extend into an external environment, a through hole is arranged in the microporous optical fiber 2, the outer diameter of the microporous optical fiber 2 is 1 mm, and the inner diameter is 50 μm, a gas mass flow controller 10 is fixedly connected to one end of the connecting box 1, a discharge gas is introduced into the connecting box 1 through the gas mass flow controller 10, the power is turned on for discharge, the gas passes through the microporous optical fiber 2 with the through hole and discharges at its port, and an area-controllable uniform and dense atmospheric pressure plasma is generated, and the discharge gas comprises all ionizable gases such as helium, air, argon, and oxygen; A conveying mechanism is provided at the lower side of the plasma generating mechanism, and the conveying mechanism is arranged in the U-shaped base 4. The material to be cleaned is conveyed by the conveying mechanism, and atmospheric pressure plasma is generated by the plasma generating mechanism. The material to be cleaned at the upper end of the conveying mechanism is cleaned by the generated atmospheric pressure plasma. A support plate 35 is fixedly connected to the inner side of the U-shaped base 4, and a clearance groove is provided at the upper end of the support plate 35. The second telescopic cylinder 17 and the first T-shaped limit rod 7 are given way through the clearance groove. A U-shaped connecting plate 9 is movably connected to the lower side of the support plate 35, and an L-shaped connecting rod 20 is fixedly connected to one side of the U-shaped connecting plate 9. A packaging film roll 16 is sleeved on the outer side of the L-shaped connecting rod 20. The packaging film should be made of a material with a relatively hard texture and a viscous material after heating, such as a polyethylene terephthalate film. After the packaging film with a relatively hard texture is cut, its cut surface will not droop downward, which is convenient for the film pulling mechanism to pull the packaging film again. A guide positioning mechanism is provided on the inner side of the U-shaped connecting plate 9, and the guide positioning mechanism includes two clamping rollers 29, both ends of the clamping rollers 29 are movably connected to the slide plate 34, the slide plate 34 is slidably connected to the sliding groove 31, and grooves are provided in the upper and lower ends of the sliding groove 31, and the upper and lower ends of the slide plate 34 are slidably connected to the grooves, and the sliding groove 31 is opened in the U-shaped connecting plate 9, and a packaging film is clamped between the two clamping rollers 29, and a return spring 36 is fixedly connected to one end of the slide plate 34, and the other end of the return spring 36 is fixedly connected to the sliding groove 31, and a pressing switch 30 is fixedly connected in one sliding groove 31, and an elastic rubber layer is provided on the outer side of the clamping roller 29, and when the packaging film passes between the two clamping rollers 29, the packaging film is clamped between the two clamping rollers 29 under the elastic force of the elastic rubber layer; The packaging film is guided and clamped by a guiding and positioning mechanism, and a film pulling mechanism is provided on one side of the guiding and positioning mechanism, and the packaging film clamped by the guiding and positioning mechanism is pulled out by the film pulling mechanism. A film cutting mechanism is provided on the inner side of the U-shaped connecting plate 9, and the packaging film is pulled out by the film pulling mechanism. When the conveying mechanism transports the cleaned material to the lower side of the film cutting mechanism, the film cutting mechanism cuts the packaging film and is arranged on the upper end of the material. At the same time, in the process of cutting the packaging film, the film cutting mechanism heats the cut surface of the packaging film to make it sticky, so that the two ends of the cut packaging film can be bonded to the two ends of the material. Through grooves 3 are provided on both sides of the U-shaped base 4, and the through grooves 3 are used to install the packaging film roll 16.

[0019] Embodiment 2: On the basis of Example 1, when cleaning materials that do not need to be used immediately after cleaning, in order to prevent impurities and dust from re-attaching to the surface of the cleaned materials during transportation, the conveying mechanism includes a conveying crawler 6, which is arranged in the U-shaped base 4, and two transmission rollers 5 are arranged on the inner side of the conveying crawler 6, and both ends of the transmission rollers 5 are movably connected to the U-shaped base 4. A transmission motor 8 is fixedly connected to the outer side of the U-shaped base 4, and the output end of the transmission motor 8 is fixedly connected to a transmission roller 5. Turning on the transmission motor 8 drives the transmission roller 5 connected to its output end to rotate, and the rotation of the transmission roller 5 drives the conveying crawler 6 to move, and the material to be cleaned is placed on the upper end of the conveying crawler 6. At this time, the conveying crawler 6 can drive the material to be cleaned to move; The film pulling mechanism includes a U-shaped slide 26, which is movably connected to the U-shaped connecting plate 9, a pressing plate 25 is provided on the inner side of the U-shaped slide 26, and a plurality of T-shaped guide rods 32 are fixedly connected to the upper end of the pressing plate 25, and the T-shaped guide rods 32 are movably connected to the U-shaped slide 26, and a first telescopic cylinder 22 is fixedly connected to the upper end of the U-shaped slide 26, and the output end of the first telescopic cylinder 22 is fixedly connected to the pressing plate 25, and both ends of the U-shaped slide 26 are fixedly connected to the sliding rod 24, and the sliding rod 24 is slidably connected to the sliding groove 28, and the sliding groove 28 is opened on the inner side of the U-shaped connecting plate 9, and a double-axis motor 33 is fixedly connected to the inner side of the U-shaped slide 26, and both output ends of the double-axis motor 33 extend to the outside. In the internal environment, the transmission gear 23 is fixedly connected, the transmission gear 23 is meshed in the tooth groove 27, and the tooth groove 27 is provided on the inner side of the U-shaped connecting plate 9. By turning on the dual-axis motor 33, the two transmission gears 23 are driven to rotate. Since the transmission gear 23 is meshed in the tooth groove 27, when the transmission gear 23 rotates, the U-shaped slide plate 26 will move to the left, and one end of the packaging film will be arranged on the inner side of the U-shaped slide plate 26. The push switch 30 is pressed, and the first telescopic cylinder 22 is started to drive the pressure plate 25 connected to its output end to move downward to clamp the packaging film. The dual-axis motor 33 will drive the transmission gear 23 to rotate in the opposite direction, and the U-shaped slide plate 26 will drive the packaging film to move to the right; The film cutting mechanism includes a connecting plate 21, and two cutters 37 are provided on the lower side of the connecting plate 21. The opposite surfaces of the two cutters 37 are fixedly connected to a heating plate 38. One cutter 37 is fixedly connected to the lower end of the connecting plate 21, and the other cutter 37 is fixedly connected to a T-shaped slider 11. The T-shaped slider 11 is slidably connected to a T-shaped connecting groove 13. The T-shaped connecting groove 13 is provided in the lower end of the connecting plate 21. A T-shaped screw rod 12 is movably connected to the T-shaped connecting groove 13. The T-shaped slider 11 is screwed to the outer side of the T-shaped screw rod 12. One end of the T-shaped screw rod 12 extends into the external environment. The T-shaped screw rod 12 is rotated according to the length of the material. The rotation of the T-shaped screw rod 12 drives the T-shaped slider 11 to move. When the T-shaped slider 11 moves, it drives the cutter 37 connected thereto to move. When the length of the two cutters 37 is equal to that of the material to be cleaned, the rotation of the T-shaped screw rod 12 can be stopped. A first T-shaped limit rod 7 is fixedly connected to the upper end of the connecting plate 21, and the first T-shaped limit rod 7 is movably connected in the U-shaped connecting plate 9. A second telescopic cylinder 17 is fixedly connected to the upper end of the U-shaped connecting plate 9, and an output end of the second telescopic cylinder 17 is fixedly connected to the connecting plate 21. Two second T-shaped limit rods 19 are fixedly connected to the upper end of the U-shaped connecting plate 9, and the second T-shaped limit rods 19 are slidably connected in the supporting plate 35. A third telescopic cylinder 18 is fixedly connected to the upper end of the supporting plate 35, and an output end of the third telescopic cylinder 18 is fixedly connected to the U-shaped connecting plate 9.

[0020] In addition, in order to achieve the above object, the present invention also provides a treatment method for the above atmospheric pressure plasma surface treatment device, comprising: S1, turn on the transmission motor 8 to drive the transmission roller 5 to rotate, place the material to be cleaned on the upper end of the conveyor belt 6, the conveyor belt 6 drives the material to be cleaned to move, pass the discharge gas into the connection box 1 through the gas mass flow controller 10, turn on the power to discharge, the gas passes through the microporous optical fiber 2 with through holes to generate atmospheric pressure plasma, when the material to be cleaned moves to the lower end of several microporous optical fibers 2 through the conveyor belt 6, the atmospheric pressure plasma emitted by several microporous optical fibers 2 cleans the surface of the material to be cleaned; S2, rotating the T-screw 12 according to the length of the material, so that the T-sliding block 11 drives the cutter 37 connected thereto to move, and when the lengths of the two cutters 37 and the material to be cleaned are equal, the rotation of the T-screw 12 is stopped, and the U-shaped slide plate 26 is moved to the left by turning on the double-axis motor 33. When the U-shaped slide plate 26 contacts the clamping roller 29, the press switch 30 is pressed, and the pressing plate 25 moves downward to clamp the packaging film. The double-axis motor 33 rotates in the opposite direction, and the U-shaped slide plate 26 drives the packaging film to move to the right; S3. When one end of the packaging film moves to the lower end of the cutter 37 on the right, the U-shaped slide plate 26 stops moving, and the second telescopic cylinder 17 drives the connecting plate 21 to move downward. The movement of the connecting plate 21 drives the two cutters 37 to move synchronously. When the cutter 37 contacts the packaging film, the packaging film will be cut. The two ends of the cut packaging film will be heated to generate viscosity. The two cutters 37 contact the two ends of the material downward, and the two ends of the packaging film will be stuck to the two ends of the material to protect the surface of the material.

[0021] Working principle: when in use, turn on the transmission motor 8 to drive the transmission roller 5 connected to its output end to rotate, and the transmission roller 5 rotates to drive the conveyor belt 6 to move, and the material to be cleaned is placed on the upper end of the conveyor belt 6. At this time, the conveyor belt 6 can drive the material to be cleaned to move, and the discharge gas is introduced into the connection box 1 through the gas mass flow controller 10. Turn on the power to discharge, and the gas passes through the microporous optical fiber 2 with through holes and discharges at its port to generate uniform and dense atmospheric pressure plasma with controllable area. When the material to be cleaned moves to the lower end of several microporous optical fibers 2 through the conveyor belt 6, the atmospheric pressure plasma emitted by several microporous optical fibers 2 cleans the surface of the material to be cleaned; When cleaning materials that are not needed immediately after cleaning, the packaging film roll 16 is connected to the L-shaped connecting rod 20, and the packaging film is pulled out and one end of the packaging film is passed through two clamping rollers 29. The two clamping rollers 29 clamp the packaging film, and the T-shaped screw rod 12 is rotated according to the length of the material. The rotation of the T-shaped screw rod 12 drives the T-shaped slider 11 to move. When the T-shaped slider 11 moves, it drives the cutter 37 connected to it to move. When the length of the two cutters 37 is equal to that of the material to be cleaned, the rotation of the T-shaped screw rod 12 can be stopped; The U-shaped connecting plate 9 is driven to move to the upper end of the material to be cleaned by the third telescopic cylinder 18, and the two transmission gears 23 connected to its output end are driven to start rotating by turning on the dual-axis motor 33. Since the transmission gear 23 is engaged in the tooth groove 27, when the transmission gear 23 rotates, the U-shaped slide plate 26 will move to the left, and the slide bar 24 will move along the slide groove 28. When the U-shaped slide plate 26 contacts the clamping roller 29, at this time, as the U-shaped slide plate 26 moves, the two clamping rollers 29 will be pushed to start moving, and at the same time, one end of the packaging film will be set on the inner side of the U-shaped slide plate 26. When the slide plate 34 contacts the press switch 30, the press switch 30 will be pressed, and the first telescopic cylinder 22 starts to drive the pressure plate 25 connected to its output end downward The packaging film is clamped, and the dual-axis motor 33 drives the transmission gear 23 to rotate in the opposite direction, and the U-shaped slide 26 drives the packaging film to move to the right. When one end of the packaging film moves to the lower end of the cutter 37 on the right, the dual-axis motor 33 is self-locked to stop the U-shaped slide 26 from moving, and the connecting plate 21 is driven to move downward by the second telescopic cylinder 17. The movement of the connecting plate 21 drives the two cutters 37 to move synchronously. Since a heating plate 38 is provided in the cutter 37, the cutter 37 will cut the packaging film when it contacts the packaging film, and the two ends of the cut packaging film will be heated to generate viscosity. The two cutters 37 move downward to contact the two ends of the material. At this time, the two ends of the packaging film will be stuck to the two ends of the material to protect the surface of the material. After the cutting is completed, the connecting plate 21 returns to the initial position, and at the same time, the conveying track 6 moves to move the material covered with the packaging film. At this time, the U-shaped slide plate 26 will move to the left again to pull out the packaging film.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An atmospheric pressure plasma surface treatment device, comprising a U-shaped base, characterized in that: A plasma generating mechanism is fixedly connected to the upper end of the U-shaped base, a conveying mechanism is provided at the lower side of the plasma generating mechanism, the conveying mechanism is arranged in the U-shaped base, the material to be cleaned is conveyed by the conveying mechanism, atmospheric pressure plasma is generated by the plasma generating mechanism, and the material to be cleaned at the upper end of the conveying mechanism is cleaned by the generated atmospheric pressure plasma, a support plate is fixedly connected to the inner side of the U-shaped base, a U-shaped connecting plate is movably connected to the lower side of the support plate, an L-shaped connecting rod is fixedly connected to one side of the U-shaped connecting plate, and a packaging film roll is sleeved on the outer side of the L-shaped connecting rod; A guiding and positioning mechanism is provided on the inner side of the U-shaped connecting plate, and the packaging film is guided and clamped by the guiding and positioning mechanism. A film pulling mechanism is provided on one side of the guiding and positioning mechanism, and the packaging film clamped by the guiding and positioning mechanism is pulled out by the film pulling mechanism. A film cutting mechanism is provided on the inner side of the U-shaped connecting plate, and the packaging film is pulled out by the film pulling mechanism. When the conveying mechanism transports the cleaned material to the lower side of the film cutting mechanism, the film cutting mechanism cuts the packaging film and is arranged on the upper end of the material. Through grooves are provided on both sides of the U-shaped base.

2. The atmospheric pressure plasma surface treatment device according to claim 1, characterized in that: The plasma generating mechanism comprises a connection box, which is fixedly connected to the upper end of the U-shaped base. A plurality of high-voltage electrodes are arranged in the connection box. The upper ends of the high-voltage electrodes pass through the connection box and are connected to the high-voltage power supply, and the lower ends are inserted into the microporous optical fibers. A plurality of the microporous optical fibers are fixedly connected to the lower end of the connection box. The upper ends of the microporous optical fibers extend into the connection box, and the lower ends extend into the external environment. A gas mass flow controller is fixedly connected to one end of the connection box.

3. The atmospheric pressure plasma surface treatment device according to claim 1, characterized in that: The conveying mechanism includes a conveying belt, which is arranged in a U-shaped base. Two transmission rollers are provided on the inner side of the conveying belt. Both ends of the transmission rollers are movably connected in the U-shaped base. A transmission motor is fixedly connected to the outer side of the U-shaped base. The output end of the transmission motor is fixedly connected to a transmission roller.

4. The atmospheric pressure plasma surface treatment device according to claim 1, characterized in that: The guiding and positioning mechanism includes two clamping rollers, both ends of the clamping rollers are movably connected to the slide, the slide is slidably connected to the sliding groove, the sliding groove is arranged in the U-shaped connecting plate, a packaging film is clamped between the two clamping rollers, one end of the slide is fixedly connected to a return spring, the other end of the return spring is fixedly connected to the sliding groove, and a push switch is fixedly connected in one of the sliding grooves.

5. The atmospheric pressure plasma surface treatment device according to claim 1, characterized in that: The film pulling mechanism includes a U-shaped slide plate, which is movably connected in the U-shaped connecting plate. A pressure plate is provided on the inner side of the U-shaped slide plate. A plurality of T-shaped guide rods are fixedly connected to the upper end of the pressure plate. The T-shaped guide rods are movably connected in the U-shaped slide plate. A first telescopic cylinder is fixedly connected to the upper end of the U-shaped slide plate, and an output end of the first telescopic cylinder is fixedly connected to the pressure plate.

6. The atmospheric pressure plasma surface treatment device according to claim 5, characterized in that: Both ends of the U-shaped slide are fixedly connected with sliding rods, and the sliding rods are slidably connected in the sliding grooves, and the sliding grooves are opened on the inner side of the U-shaped connecting plate. The inner side of the U-shaped slide is fixedly connected with a dual-axis motor, and both output ends of the dual-axis motor extend into the external environment and are fixedly connected to the transmission gear, and the transmission gear is meshed in the tooth groove, and the tooth groove is opened on the inner side of the U-shaped connecting plate.

7. The atmospheric pressure plasma surface treatment device according to claim 1, characterized in that: The film cutting mechanism includes a connecting plate, two cutting knives are provided on the lower side of the connecting plate, heating plates are fixedly connected to the opposite surfaces of the two cutting knives, one of the cutting knives is fixedly connected to the lower end of the connecting plate, and the other cutting knife is fixedly connected to a T-shaped slider, the T-shaped slider is slidably connected to a T-shaped connecting groove, the T-shaped connecting groove is opened in the lower end of the connecting plate, a T-shaped screw rod is movably connected in the T-shaped connecting groove, a T-shaped slider is screwed on the outer side of the T-shaped screw rod, and one end of the T-shaped screw rod extends into the external environment.

8. The atmospheric pressure plasma surface treatment device according to claim 7, characterized in that: The upper end of the connecting plate is fixedly connected to a first T-shaped limit rod, and the first T-shaped limit rod is movably connected in the U-shaped connecting plate. The upper end of the U-shaped connecting plate is fixedly connected to a second telescopic cylinder, and the output end of the second telescopic cylinder is fixedly connected to the connecting plate. The upper end of the U-shaped connecting plate is fixedly connected to two second T-shaped limit rods, and the second T-shaped limit rod is slidably connected in the supporting plate. The upper end of the supporting plate is fixedly connected to a third telescopic cylinder, and the output end of the third telescopic cylinder is fixedly connected to the U-shaped connecting plate.

9. An atmospheric pressure plasma surface treatment method, used in the atmospheric pressure plasma surface treatment device according to any one of claims 1 to 8, characterized in that: include: S1. Turn on the transmission motor to drive the transmission roller to rotate, place the material to be cleaned on the upper end of the conveyor belt, and the conveyor belt drives the material to be cleaned to move. The discharge gas is introduced into the connection box through the gas mass flow controller, and the power is turned on to discharge. The gas passes through the microporous optical fiber with through holes to generate atmospheric pressure plasma. When the material to be cleaned moves to the lower end of several microporous optical fibers through the conveyor belt, the atmospheric pressure plasma emitted by several microporous optical fibers cleans the surface of the material to be cleaned; S2. Rotate the T-screw according to the length of the material, so that the T-sliding block drives the cutter connected thereto to move. When the lengths of the two cutters and the material to be cleaned are equal, stop rotating the T-screw, turn on the dual-axis motor to move the U-shaped slide plate to the left, and when the U-shaped slide plate contacts the clamping roller, the press switch is pressed, the pressure plate moves downward to clamp the packaging film, and the dual-axis motor rotates in the opposite direction, and the U-shaped slide plate drives the packaging film to move to the right; S3. When one end of the packaging film moves to the lower end of the cutter on the right, the U-shaped slide stops moving, and the connecting plate is driven downward by the second telescopic cylinder. The movement of the connecting plate drives the two cutters to move synchronously. When the cutter contacts the packaging film, the packaging film will be cut. The two ends of the cut packaging film will be heated to generate stickiness. The two cutters contact the two ends of the material downward, and the two ends of the packaging film will be stuck to the two ends of the material to protect the surface of the material.

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