CN117681551A - Microwave UV curing and drying system for printing - Google Patents
Microwave UV curing and drying system for printing Download PDFInfo
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- CN117681551A CN117681551A CN202311834507.2A CN202311834507A CN117681551A CN 117681551 A CN117681551 A CN 117681551A CN 202311834507 A CN202311834507 A CN 202311834507A CN 117681551 A CN117681551 A CN 117681551A
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- 238000001035 drying Methods 0.000 title claims abstract description 22
- 238000003848 UV Light-Curing Methods 0.000 title claims description 18
- 238000007789 sealing Methods 0.000 claims abstract description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
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- 230000017525 heat dissipation Effects 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 3
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- 230000008023 solidification Effects 0.000 abstract description 2
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Landscapes
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Abstract
The utility model provides a microwave UV solidification drying system for printing, includes magnetron, waveguide, resonant cavity, shield cover, and the magnetron communicates with the waveguide through its lower part's cylinder head, waveguide and resonant cavity intercommunication, its characterized in that: the magnetron, the waveguide and the resonant cavity are sequentially and longitudinally connected from top to bottom; the shielding cover is arranged outside the opening of the front wall of the cavity shell; the magnetron also comprises a sealing cover which is buckled on the front surfaces of the shielding cover and the magnetron. The advantages are that: 1) The volume of the lamp body is reduced, and the structure is changed; 2) The arrangement direction of the magnetron, the waveguide and the resonant cavity is changed; 3) The resonant cavity is improved, the reflector and the shielding cover can be well fixed, and electromagnetic waves can be thoroughly shielded; 4) Reasonably moving electromagnetic waves to pass through the strip holes and the elliptical through holes for heat dissipation; 5) The shielding cover adopts a planar design; 6) The magnetron dissipates heat and uses a single fan outlet, which prolongs the service life of the magnetron.
Description
Technical Field
The invention belongs to the technical field of printing machinery manufacturing, and particularly relates to a microwave UV curing and drying system for printing.
Background
Currently, all offset sheet-fed printing presses use UV printing, and most of the systems used are also conventional UV lamp sets. Taking a split multicolor offset press as an example, a UV curing and drying system is generally provided with 6 groups of traditional UV lamp groups, each lamp group has a rated power of 16 kilowatts, each lamp group is provided with a cooling fan of 1 kilowatt, each lamp group is also provided with a cooling fan of 25 kilowatts, the total rated power is 127 kilowatts, and the average use power in normal production is about 70 kilowatts. Since 2017, along with the continuous development of LEDUV curing, some single-paper UV printers are gradually added with led UV lamp sets, but led UV belongs to cold light source curing and drying, and UV special ink is not ideal all the time: the first reason is that the photoinitiator wavelength range of part of the ink coating liquid is less than 365 nanometers, the wavelength of LEDU is 365-410 nanometers, and the LEDU system can not initiate curing; secondly, the printing and coating suitability requirement is that a part of auxiliary agents must be added to improve the usability, the part of auxiliary agents needs higher heat to volatilize and dry in the UV curing process, the LED UV cold light source depends on partial purple light, and the thoroughly drying effect is difficult to achieve by converting the purple light into heat. Therefore, the existing single-paper UV printer firstly uses the traditional UV lamp set continuously or uses a mixed UV system of the traditional UV lamp set and the LED UV lamp set, and the power saving effect is not obvious because the traditional lamp set mounting position belongs to a long-term lighting position, the average practical power is about 55 kilowatts, and the defects of high energy consumption, fire hazard, ozone pollution, poor stability, short service life and the like of the mercury lamp are not obviously improved.
Microwave UV is a UV curing system developed in recent years, and is a high-technology product developed by comprehensively applying latest technological achievements in the fields of optics, power electronics, plasma science, magnetic materials and the like. The spectrum energy of microwave UV is concentrated, the ultraviolet spectrum characteristics of the traditional UV system are provided, the ratio of infrared radiation to the traditional lamp group is very small, the luminous efficiency can reach about 75%, no ozone is generated, lamp tubes with different spectrums can be used according to different curing objects, the traditional UV ink paint can be cured and dried well, and the service life is longer; the power density is high, the radiation efficiency is high, and the spectrum and the light intensity are adjustable. However, due to the complexity of the microwave UV structure, the lamp set thereof is bulky and cannot be applied to smaller space UV printing and coating apparatuses such as offset sheet-fed presses, satellite rotary presses, digital printers, etc. Because few optional accessories are developed in the earlier stage, the use and maintenance convenience and the luminous efficiency of the LED lamp are still to be improved; the electromagnetic shielding fittings used in the early stage are also to be tested so as to reduce the possibility of electromagnetic wave leakage.
The current microwave UV also has the following disadvantages:
1. at present, the UV curing position of a paper collecting unit of all sheet-fed offset printing presses is reserved according to the design of a traditional lamp set. The general space size can install three-finger traditional banks of lamps, and width 50 cm is about 18 cm in height, and length 135 cm runs through between two wallboards of the printing machine. The current microwave UV lamp group on the market has the height of 30 cm and the width of 20 cm, emits light downwards, has the height far higher than the reserved space, cannot be placed in a printing machine for drying and curing the printing ink, and cannot be used for offset printing UV curing and drying.
2. A resonant cavity: a. circular through holes and inclined plane through holes are formed in four sides of the waveguide resonant cavity, and the purpose of heat dissipation is achieved; the inclined plane through hole forms an angle of 45 degrees with the wall surface, the aperture measured by the wall surface is larger than 6.5 mm and is larger than one twentieth of the wavelength of electromagnetic waves emitted by the magnetron, so that the electromagnetic waves are leaked, and the leakage of the inclined plane through hole is more serious; b. the width of the reflector of the resonant cavity in the width direction of the UV lamp set is 110 mm, in order to meet the requirement of shielding electromagnetic waves, the reflector needs to be fixed on a wider contact surface, electromagnetic induction heat also needs to be stored and dissipated in a larger volume, so that the two sides outside the width of the resonant cavity are widened by 45mm, the reflector is fixed, heat is dissipated and dissipated, and the total width of the lamp set is 200 mm. Lamp sets of such large widths are difficult to mount smoothly or present difficulties in operating the printer.
3. A reflector: the fixed edge of the reflector is too wide and too thick, and is not easy to deform and convenient for electromagnetic wave shielding, but the whole reflector is too wide, so that the installation of a small space reserved by a part of printer is difficult; defects exist in the positions and the sizes of the openings of the reflector, so that the lamp tube is difficult to start and can only be started at high power. The magnetron, the reflector and the lamp tube need to be matched again to reach the optimal position, and the lamp tube can be started with low power.
4. A shielding cover: a. stainless steel clamps, tungsten wires are easy to deform when welded and bent; b. the metal shielding strip adopts a brass silver-plated filament braided round strip form, so that the metal shielding strip is inelastic, the tightness is inconsistent easily during each disassembly and assembly, induction ignition is caused, the starting cannot be performed or the starting is slowed down, and the light efficiency is reduced; the rigidity is increased through bending at the shielding cover edge, reduces the deformation, but makes the processing degree of difficulty increase, easily appears electric wave leakage and response electric arc, causes the difficult and low scheduling problem of light efficiency of starting.
5. And (3) heat dissipation: a fan firstly dissipates heat for the magnetron, and then dissipates heat through small holes on the waveguide and is discharged through the shielding cover; electromagnetic waves may leak due to the fact that the diameter of the radiating holes in the waveguide is too large in the wall.
Disclosure of Invention
The invention aims to solve the technical problems that: the defects in the prior art are overcome, and a microwave UV curing and drying system for printing is provided.
The technical scheme adopted for solving the technical problems is as follows: the microwave UV curing and drying system for printing comprises a magnetron, a waveguide, a resonant cavity and a shielding cover, wherein the magnetron is communicated with the waveguide through a cylindrical head at the lower part of the magnetron, and the waveguide is communicated with the resonant cavity, and the microwave UV curing and drying system is characterized in that: the magnetron, the waveguide and the resonant cavity are sequentially and longitudinally connected from top to bottom;
the resonant cavity includes: the front wall of the cavity shell is provided with an opening, the middle part of the upper wall of the cavity shell is provided with a first through hole, and the waveguide is communicated with the resonant cavity through the first through hole; the reflector and the microwave lamp tube are arranged in the cavity shell;
the reflector is rectangular, two longitudinal strip through holes are transversely arranged on the reflector, a plurality of regularly arranged elliptical through holes are formed in two sides of the two strip through holes, the strip through holes and the elliptical through holes are formed in the upper half part of the reflector, and the lower half part of the reflector is a non-porous reflector panel;
the left side wall and the right side wall of the cavity shell are symmetrically provided with a semicircular arc-shaped step which is in a C shape, and the lower end of the step is positioned at the front ends of the left side wall and the right side wall of the cavity shell; the left side and the right side of the reflector are respectively closely connected with the left side wall and the right side wall of the cavity shell at the joint of the height of the C-shaped semicircular steps, the closely connected reflector also presents a C-shaped semicircular shape, the bottom of the C-shaped reflector faces the rear wall of the resonant cavity, and the opening part of the C-shaped reflector faces the opening of the front wall of the cavity shell; the strip through holes and the elliptic through holes are positioned at the upper part of the C-shaped semicircular arc top of the reflector, and the lower part of the C-shaped semicircular arc top is a non-porous reflector panel; the microwave lamp tube is transversely arranged at the middle part of the cavity shell, the C-shaped opening part of the reflector faces the microwave lamp tube, and two ends of the microwave lamp tube are respectively connected to the left and right side walls of the cavity shell and the lower end parts of the C-shaped semicircular steps;
the lower ends of the semicircular steps of the C shape on the left side wall and the right side wall of the cavity shell are respectively inserted with a semicircular flat plate, the circular arc edges of the two semicircular flat plates are connected with the two side edges of the reflector, and the straight edges are pressed on the left side wall and the right side wall of the cavity shell by the shielding cover;
the upper edge and the lower edge of the reflector are respectively provided with a skirt edge bent by 90 degrees, and sealing strips are arranged in the skirt edges; the skirt edges are pressed on the left side wall and the right side wall of the cavity shell by the shielding cover;
the shielding cover is arranged outside the opening of the front wall of the cavity shell; the shielding cover comprises a square frame, a woven mesh, a conductive silica gel sealing strip and a pressing strip, wherein the four peripheries of the square frame are provided with a caulking groove, and the four peripheries of the woven mesh are embedded in the caulking groove; the conductive silica gel sealing strip is arranged in the caulking groove and at the upper part of the woven mesh, and the pressing strip is arranged in the caulking groove and at the upper part of the conductive silica gel sealing strip;
the magnetron also comprises a sealing cover which is buckled on the front surfaces of the shielding cover and the magnetron; the lower part of the sealing cover is provided with a light-transmitting square hole, and the light-transmitting square hole corresponds to the position of the opening; the upper part of the sealing cover is provided with a small square hole.
Preferably, the magnetron also comprises a first radiating fan and a second radiating fan, and the magnetron is connected with the first radiating fan through an air duct; the rear wall of the resonant cavity is provided with a second through hole, and the second cooling fan is connected with the resonant cavity through the second through hole.
Preferably, an annular heat sink is sleeved on the outer surface of the magnetron main body.
Preferably, the woven mesh is cross woven, and the material is tungsten filament.
Compared with the prior art, the invention has the beneficial effects that: 1) The volume of the lamp body is reduced, the structure of the lamp body is changed, and the lamp body can meet the curing and drying requirements of a specific space printing machine; the electromagnetic wave leakage value is further reduced, and the maintainability of the electromagnetic wave leakage value is improved; the matching of the resonant cavity, the reflecting sheet, the lamp tube and the like is improved, the optimal effect is achieved, and the performance of the invention is improved. 2) The arrangement direction of a magnetron, a waveguide and a resonant cavity is changed, the height of the arranged lamp set is 16 cm less than the space height of a printing machine of 18 cm, and the width of the lamp set is 26 cm less than the width of the printing machine of 50 cm, so that the lamp set can be smoothly placed in a single-sheet UV printing paper collecting unit for solidification and drying; the effective curing area of the microwave UV single lamp is 170mm, and the lamp groups are arranged to be suitable for the required size according to the requirement of the curing width, so that the curing and drying requirements of the printing products with different lengths can be met. 3) The resonant cavity is improved: a. the electromagnetic wave can be fully emitted under the ideal state of the resonant cavity, the proportion of heat generated by induction is not large in the process of converting electromagnetic wave energy into light energy, under the condition of opening a pupil with the aperture of 4.5mm, the direct current fan with the double roller bearings and the 10W auxiliary support is tested for a plurality of times, and under the monitoring of a thermal imager, the maximum temperature of the cavity shell is 60 ℃, the maximum temperature of a lamp tube is 176.7 ℃, so that the heat dissipation requirement is satisfied. b. Improvement and fixation of reflectors and shielding cases: the reflector and the shielding cover are designed by adopting a proper narrow side of a plane and are arranged at the tight matching position of the resonant cavity opening and the shell, and the shell is uniformly and smoothly matched with the resonant cavity by adopting a cast aluminum mode, so that the reflector and the shielding cover can be well fixed and electromagnetic waves can be thoroughly shielded. 4) The electromagnetic wave reasonably moves through the strip hole and the elliptical through hole for heat dissipation, the aperture is reasonably adjusted and tested, and the indexes of the resonant cavity, the lighting power range of the lamp group and the magnetron temperature lamp are matched. Through 24-hour copying test, the magnetron temperature of the lamp tube of the mercury lamp with the power of 500-1500W is controlled between 60-120 ℃, and the average temperature is reduced by 30 ℃ compared with the original temperature, thus greatly prolonging the service life of the magnetron. b. The fixed edge of the reflector is bent by 90 degrees, the width is 5mm, and the bottom is additionally provided with the sealing strip, so that the width of the lamp set is reduced, and the electromagnetic wave sealing problem is solved. 5) The shielding cover adopts planar design, and the conductive silica gel sealing strip is pasted on the narrow limit of 5 millimeters, and hardness is suitable again has elasticity, and sealing performance is good, can not appear shielding cover sealing department phenomenon of generating heat of striking sparks. 6) The magnetron dissipates heat by using an independent fan outlet, hot air directly acts on the surface of a printing stock, and the magnetron dissipates heat with small holes and high air speed, so that the magnetron dissipates solvent; the resonant cavity generates relatively low heat, and mainly dissipates heat to the lamp tube, the cavity wall and the reflector. The magnetron temperature is lower than the prior art, the heat dissipation requirement can be met, and the service life of the magnetron is prolonged.
Drawings
FIG. 1 is a front view of a first embodiment of the present invention;
FIG. 2 is a right side view of an embodiment of the present invention;
fig. 3 is a schematic perspective view of a first embodiment of the present invention;
fig. 4 is a schematic perspective view of a first embodiment of the present invention;
fig. 5 is a front view of a shield according to a first embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is an enlarged view at B in FIG. 6;
FIG. 8 is a front view of a resonant cavity according to a first embodiment of the invention;
FIG. 9 is a perspective view of a chamber housing according to a first embodiment of the invention;
FIG. 10 is a front view of a chamber housing of a first embodiment of the invention;
FIG. 11 is a front view of a reflector according to a first embodiment of the present invention;
FIG. 12 is a side view of a reflector according to a first embodiment of the invention mounted in a resonant cavity;
FIG. 13 is a top view of a reflector according to a first embodiment of the present invention mounted in a resonant cavity;
fig. 14 is a perspective view of a reflector according to a first embodiment of the present invention mounted in a resonant cavity.
Marked in the figure as:
1. a magnetron; 11. cylindrical heads; 12. annular heat sink; 2. a waveguide; 3. a resonant cavity; 31. a cavity shell;
311. a semicircular arc step of a C shape; 32. a reflector; 321. a long through hole; 322. an elliptical through hole;
323. semicircular light reflecting flat plate; 324. a skirt edge; 33. a microwave lamp tube; 34. a first through hole; 35. a second through hole;
4. a shield; 41. a square frame; 42. a woven mesh; 43. a conductive silica gel sealing strip; 44. pressing strips;
6. a first heat radiation fan; 7. and a second heat dissipation fan.
Detailed Description
The invention is further described below with reference to the accompanying examples:
example 1
As shown in fig. 1 to 14, a microwave UV curing and drying system for printing comprises a magnetron 1, a waveguide 2, a resonant cavity 3 and a shielding cover 4, wherein the magnetron 1 is communicated with the waveguide 2 through a cylindrical head 11 at the lower part of the magnetron, the waveguide 2 is communicated with the resonant cavity 3, and the magnetron 1, the waveguide 2 and the resonant cavity 3 are sequentially and longitudinally connected from top to bottom;
the resonant cavity 3 includes: the cavity shell 31, the reflector 32 and the microwave lamp tube 33, the front wall of the cavity shell 31 is provided with an open mouth, the middle part of the upper wall of the cavity shell 31 is provided with a first through hole 34, and the waveguide 2 is communicated with the resonant cavity 3 through the first through hole 34; the reflector 32 and the microwave lamp 33 are arranged in the cavity shell 31;
the reflector 32 is rectangular, two longitudinal strip through holes 321 are transversely arranged on the reflector 32, a plurality of regularly arranged elliptical through holes 322 are formed in two sides of the two strip through holes, the strip through holes 321 and the elliptical through holes 322 are formed in the upper half part of the reflector 32, and the lower half part of the reflector 32 is a non-porous reflector panel;
semicircular arc-shaped steps 311 which are symmetrically arranged on the left side wall and the right side wall of the cavity shell 31 and are in a C shape, and the lower ends of the steps are positioned at the front ends of the left side wall and the right side wall of the cavity shell 31; the left and right sides of the reflector 32 are respectively closely connected with the left and right side walls of the cavity shell 31 at the joint of the height of the C-shaped semicircular arc step 311, the closely connected reflector 32 also presents a C-shaped semicircular arc shape, the bottom of the C-shaped is towards the rear wall of the cavity shell 31, and the opening of the C-shaped is towards the opening of the front wall of the cavity shell 31; the long through holes 321 and the oval through holes 322 are positioned at the upper part of the C-shaped semicircular arc top of the reflector 32, and the lower part of the C-shaped semicircular arc top is a non-porous reflector panel; the microwave lamp tube 33 is transversely arranged in the middle of the cavity shell 31, the C-shaped opening part of the reflector 32 faces the microwave lamp tube 33, and two ends of the microwave lamp tube 33 are respectively connected to the left and right side walls of the cavity shell 31 and the lower end part of the C-shaped semicircular arc step 311;
the lower ends of the semicircular steps 311 of the C shape on the left and right side walls of the cavity shell 31 are respectively inserted with semicircular reflecting plates 323, the circular arc edges of the two semicircular reflecting plates 323 are connected with the two side edges of the reflector 32, and the straight edges of the two semicircular reflecting plates 323 are pressed on the left and right side walls of the cavity shell 31 by the shielding cover 4;
the upper and lower edges of the reflector 32 are provided with a skirt 324 which is bent by 90 degrees, and sealing strips are arranged in the skirt 324; the skirt 324 is pressed on the left and right side walls of the cavity shell 31 by the shielding cover 4;
the shielding cover 4 is arranged outside the opening of the front wall of the cavity shell 31; the shielding cover 4 comprises a square frame 41, a woven mesh 42, a conductive silica gel sealing strip 43 and a pressing strip 44, wherein caulking grooves are formed in the four periphery of the square frame 41, and the peripheral edges of the woven mesh 42 are embedded in the caulking grooves; the conductive silica gel sealing strip 43 is arranged in the caulking groove and on the upper part of the woven mesh 42, and the pressing strip 44 is arranged in the caulking groove and on the upper part of the conductive silica gel sealing strip 43. The woven mesh 42, the conductive silica gel sealing strip 43 and the pressing strip 44 are connected with the square frame 41 in a punching way; the woven mesh 42 is cross woven and made of tungsten wires.
The magnetron also comprises a sealing cover which is buckled on the front surfaces of the shielding cover 4 and the magnetron 1; the lower part of the sealing cover is provided with a light-transmitting square hole, and the light-transmitting square hole corresponds to the position of the opening of the front wall of the cavity shell 3; the upper part of the sealing cover is provided with a small square hole.
The magnetron 1 is connected with the first cooling fan 6 through an air duct, and annular cooling fins 12 are sleeved on the outer surface of the main body of the magnetron 1; a second through hole 35 is provided in the rear wall of the cavity case 3, and the second heat radiation fan 7 is connected to the resonant cavity 3 through the second through hole 35.
The working principle of the invention is as follows:
as shown in fig. 1 to 13, a high-frequency direct current power supply is used for providing a direct current power supply for a magnetron 1, the magnetron 1 generates electromagnetic waves through a cylindrical head 11 thereof, the electromagnetic waves are transmitted to a resonant cavity 3 through a waveguide 2, the electromagnetic waves store electromagnetic wave energy in the resonant cavity 3, the electromagnetic wave energy is transmitted to a microwave lamp tube 33 through a long strip through hole 321 of a reflector 32, and the gas and mercury in the microwave lamp tube 33 are excited to emit ultraviolet light; the first cooling fan 6 radiates heat to the magnetron 1 through the cooling air duct; the second heat radiation fan 7 radiates heat to the resonant cavity 3, the reflector 32 and the microwave lamp 33.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the invention in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (4)
1. A microwave UV curing drying system for printing, characterized by: the microwave UV curing and drying system for printing comprises a magnetron, a waveguide, a resonant cavity and a shielding cover, wherein the magnetron is communicated with the waveguide through a cylindrical head at the lower part of the magnetron, and the waveguide is communicated with the resonant cavity, and the microwave UV curing and drying system is characterized in that: the magnetron, the waveguide and the resonant cavity are sequentially and longitudinally connected from top to bottom;
the resonant cavity includes: the front wall of the cavity shell is provided with an opening, the middle part of the upper wall of the cavity shell is provided with a first through hole, and the waveguide is communicated with the resonant cavity through the first through hole; the reflector and the microwave lamp tube are arranged in the cavity shell;
the reflector is rectangular, two longitudinal strip through holes are transversely arranged on the reflector, a plurality of regularly arranged elliptical through holes are formed in two sides of the two strip through holes, the strip through holes and the elliptical through holes are formed in the upper half part of the reflector, and the lower half part of the reflector is a non-porous reflector panel;
the left side wall and the right side wall of the cavity shell are symmetrically provided with a semicircular arc-shaped step which is in a C shape, and the lower end of the step is positioned at the front ends of the left side wall and the right side wall of the cavity shell; the left side and the right side of the reflector are respectively closely connected with the left side wall and the right side wall of the cavity shell at the joint of the height of the C-shaped semicircular steps, the closely connected reflector also presents a C-shaped semicircular shape, the bottom of the C-shaped reflector faces the rear wall of the resonant cavity, and the opening part of the C-shaped reflector faces the opening of the front wall of the cavity shell; the strip through holes and the elliptic through holes are positioned at the upper part of the C-shaped semicircular arc top of the reflector, and the lower part of the C-shaped semicircular arc top is a non-porous reflector panel; the microwave lamp tube is transversely arranged at the middle part of the cavity shell, the C-shaped opening part of the reflector faces the microwave lamp tube, and two ends of the microwave lamp tube are respectively connected to the left and right side walls of the cavity shell and the lower end parts of the C-shaped semicircular steps;
the lower ends of the semicircular steps of the C shape on the left side wall and the right side wall of the cavity shell are respectively inserted with a semicircular flat plate, the circular arc edges of the two semicircular flat plates are connected with the two side edges of the reflector, and the straight edges are pressed on the left side wall and the right side wall of the cavity shell by the shielding cover;
the upper edge and the lower edge of the reflector are respectively provided with a skirt edge bent by 90 degrees, and sealing strips are arranged in the skirt edges; the skirt edges are pressed on the left side wall and the right side wall of the cavity shell by the shielding cover;
the shielding cover is arranged outside the opening of the front wall of the cavity shell; the shielding cover comprises a square frame, a woven mesh, a conductive silica gel sealing strip and a pressing strip, wherein the four peripheries of the square frame are provided with a caulking groove, and the four peripheries of the woven mesh are embedded in the caulking groove; the conductive silica gel sealing strip is arranged in the caulking groove and at the upper part of the woven mesh, and the pressing strip is arranged in the caulking groove and at the upper part of the conductive silica gel sealing strip;
the magnetron also comprises a sealing cover which is buckled on the front surfaces of the shielding cover and the magnetron; the lower part of the sealing cover is provided with a light-transmitting square hole, and the light-transmitting square hole corresponds to the position of the opening; the upper part of the sealing cover is provided with a small square hole.
2. The microwave UV curing drying system for printing of claim 1, wherein: the magnetron is connected with the first cooling fan through an air duct; the rear wall of the resonant cavity is provided with a second through hole, and the second cooling fan is connected with the resonant cavity through the second through hole.
3. The microwave UV curing drying system for printing of claim 2, wherein: an annular radiating fin is sleeved on the outer surface of the magnetron main body.
4. A microwave UV curing drying system for printing according to claim 3, wherein: the woven mesh is cross woven and is made of tungsten wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311834507.2A CN117681551A (en) | 2023-12-28 | 2023-12-28 | Microwave UV curing and drying system for printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311834507.2A CN117681551A (en) | 2023-12-28 | 2023-12-28 | Microwave UV curing and drying system for printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117681551A true CN117681551A (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311834507.2A Pending CN117681551A (en) | 2023-12-28 | 2023-12-28 | Microwave UV curing and drying system for printing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117681551A (en) |
-
2023
- 2023-12-28 CN CN202311834507.2A patent/CN117681551A/en active Pending
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