阅读说明：本技术 一种基于3d打印技术的真空热成型系统及其方法 (Vacuum thermal forming system and method based on 3D printing technology ) 是由 班岚 杨灿 殷实 徐妍 康逢君 于 2019-08-19 设计创作，主要内容包括：本发明提供一种基于3D打印技术的真空热成型系统及其方法,包括3D打印机、真空热成型机和控制所述3D打印机与真空热成型机的控制系统,所述控制系统控制所述3D打印机按设计者的设定打印具有抽真空孔的模具,打印好的模具位于所述3D打印机的3D打印平台上,所述控制系统控制所述3D打印平台移动至所述真空热成型机内,所述真空热成型机包括机架、设置在所述机架上可沿所述机架上下移动的加热装置和设置在所述机架内下部的真空泵,本发明的有益效果是成本低、效率高,将3D打印技术与真空热成型工艺相结合,操作更为简单,使用更加方便。(The invention provides a vacuum thermoforming system and a method based on a 3D printing technology, and the vacuum thermoforming system comprises a 3D printer, a vacuum thermoforming machine and a control system for controlling the 3D printer and the vacuum thermoforming machine, wherein the control system controls the 3D printer to print a mold with a vacuumizing hole according to the setting of a designer, the printed mold is positioned on a 3D printing platform of the 3D printer, the control system controls the 3D printing platform to move into the vacuum thermoforming machine, and the vacuum thermoforming machine comprises a rack, a heating device which is arranged on the rack and can move up and down along the rack and a vacuum pump which is arranged at the lower part in the rack.)

1. A vacuum thermoforming system based on 3D printing technology is characterized by comprising a 3D printer (2), a vacuum thermoforming machine (6) and a control system (5) for controlling the 3D printer and the vacuum thermoforming machine;

the control system (5) controls the 3D printer (2) to print a mold (7) with a vacuumizing hole according to the setting of a designer, the printed mold (7) is located on a 3D printing platform (3) of the 3D printer, and the control system (5) controls the 3D printing platform (3) to move into the vacuum thermoforming machine (6);

vacuum thermoforming machine (6) include frame (1), set up and be in can follow in frame (1) heating device that frame (1) reciprocated and setting are in vacuum pump (8) of lower part in frame (1), the product is located heating device with between vacuum pump (8), evacuation jogged joint on mould (7) vacuum pump (8), the last PVC sheet that is provided with of heating device, control system (5) control heating device heating and downward movement are to compressing tightly the top of mould (7), control system (5) control vacuum pump (8) are right mould (7) with the PVC sheet carries out the evacuation, obtain by the product that the PVC sheet was packed.

2. The vacuum thermoforming system based on 3D printing technique of claim 1, characterized in that, 3D printer (2) includes transmission part and control part, transmission part is by four printer pad feet (28) with vacuum thermoforming frame (10) fixed connection, fixed connection in printer frame (13) of printer pad foot (28) upper surface, install 3D print platform (3) on printer frame (13), use wheel (22) with the printer of recess matched with on printer frame (13), use wheel clamping piece (20) through the printer of screw and printer use wheel (22) fixed connection, fixed mounting in printer frame (13) middle part frame's printer motor three (24), fixed mounting in printer motor one (17) on printer frame (13) other side frame, Install in printer motor drive (18) of printer motor (17) upper surface, one end fixed connection is in printer motor drive (18) and the other end passes through screw-thread fit to be connected in printer motor threaded rod (19) that the printer used wheel clamping piece (20), printer motor two (23) and printer motor four (25) of fixed mounting in printer frame (13) middle part one side framework, relative just fixed mounting in printer frame (13) middle part framework with printer motor two (23) printer shower nozzle two (21) and printer shower nozzle two (26), install in nozzle (27) of printer shower nozzle two (26) lower surface, the consumptive material support (29) of fixed connection in printer frame (13) top framework constitute jointly.

3. The vacuum thermoforming system based on 3D printing technology as claimed in claim 2, characterized in that the control portion is formed by a printer card reader (14) fixedly mounted at a lower portion of the printer frame (13), a printer power switch (16) fixedly connected to a frame body on one side of the printer frame (13), and a printer controller (15) located above the printer power switch (16) and fixedly connected with the printer frame.

4. The vacuum thermoforming system based on 3D printing technology of claim 2, characterized in that, the 3D printing platform (3) is composed of a platform support (31) embedded in the lower frame of the printer frame (13), platform adjusting knobs (32) distributed at four corners of the platform support (31) and connected with the platform support, and a bed body (30) located above the platform support (31) and fixedly connected with the platform adjusting knobs (32).

5. The vacuum thermoforming system based on 3D printing technology of claim 1, characterized in that the rack (1) is composed of a vacuum thermoforming frame (10), a driving device (4) installed on the vacuum thermoforming frame (10), a vacuum thermoforming front panel (11) fixedly connected with one side of the vacuum thermoforming frame (10), and a vacuum thermoforming left panel (12) located adjacent to the vacuum thermoforming front panel (11) and fixedly connected with the vacuum thermoforming frame (10).

6. The vacuum thermal forming system based on the 3D printing technology as claimed in claim 5, wherein the driving device (4) is composed of a motor base (39) fixedly connected with the vacuum thermal forming front panel (11), a motor bottom cover (36) located above and fixedly connected with the motor base (39), a motor column (33) fixedly connected with the upper surface of the motor bottom cover (36), a motor guide rail (34) fixedly installed in a groove of the motor column (33), a motor top cover (35) fixedly connected with the upper end of the motor column (33), a stepping motor threaded rod (37) with one end connected with the motor top cover (35), and a stepping motor driver (38) connected with the other end of the stepping motor threaded rod (37) and fixed on the upper surface of the motor bottom cover (36).

7. The vacuum thermoforming system based on 3D printing technology as claimed in claim 1, wherein the control system (5) is composed of a control box upper panel (40) fixedly connected with the vacuum thermoforming frame (10), a control box side panel (42) fixedly connected with the vacuum thermoforming front panel (11) and the control box upper panel (40), a control box rear panel (41) fixedly connected with the control box upper panel (40) and the control box side panel (42), two control knobs (45) installed on the control box upper panel (40), a stepping motor driver (46) located inside the control system (5) and fixedly installed on the control box upper panel (40), a stepping motor sliding table special power supply (47), a temperature and speed adjusting controller (48), a motor programmer (50), a wiring and pressure adjusting switch (43) located inside the control system (5) and fixedly installed on the control box side panel (42), The temperature tester comprises an air switch (44), a temperature tester (49) and a 3D printer control panel (55).

8. The vacuum thermoforming system based on 3D printing technology of claim 1, characterized in that the heating device is composed of a motor moving part (53) which is connected with the motor threaded rod (37) in a threaded fit manner and one end of which is embedded in the motor guide rail (34), a heating frame support (52) which is fixedly connected with the other end of the motor moving part (53), a heating frame main body (51) which is fixedly connected with the heating frame support (52), three heating pipes (54) which are fixedly connected with the upper frame of the heating frame main body (51) and are uniformly arranged, and an infrared probe (9) which is fixedly installed on the upper frame of the heating frame main body (51).

9. A vacuum thermoforming method based on a 3D printing technology is characterized by comprising the following steps:

the method comprises the following steps: manufacturing a mould model by using three-dimensional software;

step two: printing the mold through a 3D printer;

step three: mounting the PVC sheet on a heating device, heating by using a heating pipe, and simultaneously descending the heating device to be tightly pressed to the top of the mould;

step four: starting a vacuum pump, evacuating the air in the closed space, and contacting the PVC film with the mold to form a vacuum closed space;

step five: the heating device is lifted to the initial position, and the finished product is cooled to the normal temperature by using the cooling fan;

step six: and (5) after the processing is finished, turning off the power supply of the equipment, and taking down the finished product.

Technical Field

The invention belongs to the field of thermoforming, and particularly relates to a vacuum thermoforming system and a method thereof based on a 3D printing technology.

Background

People usually want the gifts and packages to be unique and novel when purchasing the gifts, and the gifts and packages can be customized according to own ideas, however, plastic gift packages in the market are produced in batches by factories at present, and the phenomena of vacuum film suction type being not in place, film sticking not tight, film cracking and air leakage are caused, meanwhile, when a vacuum thermoforming machine processes plastic packages with different patterns, different molds are needed, the traditional mold forming method is material reduction manufacturing, which is to remove redundant parts of materials by using methods of cutting, grinding, corrosion, melting and the like on the basis of raw materials to obtain parts, and then the parts are combined into a final product by methods of splicing, welding and the like, the method wastes time and energy and generates excessive waste materials, the cost of the molds is increased, but no machine capable of combining a 3D printing technology and a vacuum thermoforming technology into a whole is available at home and abroad, we need to design a vacuum thermoforming machine of the domestic type that satisfies the single-piece production.

Disclosure of Invention

The invention aims to provide a vacuum thermoforming system based on a 3D printing technology and a method thereof.

The vacuum thermoforming system based on the 3D printing technology comprises a 3D printer, a vacuum thermoforming machine and a control system for controlling the 3D printer and the vacuum thermoforming machine;

the control system controls the 3D printer to print a mold with a vacuumizing hole according to the setting of a designer, the printed mold is positioned on a 3D printing platform of the 3D printer, and the control system controls the 3D printing platform to move into the vacuum thermoforming machine;

the vacuum thermoforming machine comprises a frame, a heating device and a vacuum pump, wherein the heating device is arranged on the frame and can be moved up and down along the frame, the vacuum pump is arranged at the lower part in the frame, products are located between the heating device and the vacuum pump, a vacuumizing hole in the die is connected with the vacuum pump, a PVC sheet is arranged on the heating device, the heating device is controlled by a control system to heat and move down to press the top of the die, and the vacuum pump is controlled by the control system to vacuumize the die and the PVC sheet so as to obtain the products packaged by the PVC sheet.

The 3D printer includes drive division and control part, the drive division is by four printer pad feet with vacuum thermoforming frame fixed connection, fixed connection is in the printer frame of printer pad foot upper surface, install the 3D print platform on the printer frame, use the wheel with the recess matched with printer on the printer frame, use the wheel clamping piece through the printer that screw and printer used wheel fixed connection, fixed mounting is in printer motor three of printer frame middle part framework, fixed mounting is in printer motor one of printer frame opposite side framework, install the printer motor drive of printer motor one upper surface, one end fixed connection is in printer motor drive and the other end passes through screw-thread fit to be connected in the printer and uses the printer motor threaded rod of wheel clamping piece, fixed mounting is in printer motor two and the printer motor four of printer frame middle part one side framework, The first printer nozzle and the second printer nozzle are opposite to the second printer motor and fixedly installed on the middle frame body of the printer frame, the nozzles installed on the lower surfaces of the second printer nozzles and the consumable support fixedly connected to the upper frame body of the printer frame jointly form the consumable support.

The control part is composed of a printer card reader fixedly arranged at the lower part of the printer frame, a printer power switch fixedly connected to the frame body at one side of the printer frame, and a printer controller positioned above the printer power switch and fixedly connected with the printer frame.

The 3D printing platform is composed of a platform support, platform adjusting knobs and a lathe bed, wherein the platform support is embedded in a lower frame body of the printer frame, the platform adjusting knobs are distributed at four corners of the platform support and are connected with the platform support, and the lathe bed is located above the platform support and is fixedly connected with the platform adjusting knobs.

The frame is composed of a vacuum thermoforming frame, a driving device arranged on the vacuum thermoforming frame, a vacuum thermoforming front panel fixedly connected with one side of the vacuum thermoforming frame, and a vacuum thermoforming left panel located on the adjacent side of the vacuum thermoforming front panel and fixedly connected with the vacuum thermoforming frame.

The driving device is composed of a motor base fixedly connected with the vacuum thermal forming front panel, a motor bottom cover which is positioned above the motor base and is fixedly connected with the motor base, a motor column fixedly connected with the upper surface of the motor bottom cover, a motor guide rail fixedly installed in a groove of the motor column, a motor top cover fixedly connected with the upper end of the motor column, a stepping motor threaded rod with one end connected with the motor top cover, and a stepping motor which is connected with the other end of the stepping motor threaded rod and is fixed on the upper surface of the motor bottom cover.

Control system by with vacuum thermoforming frame fixed connection's control box top panel, with vacuum thermoforming front panel and control box top panel fixed connection's control box side panel, with control box top panel and control box side panel fixed connection's control box rear panel, install two control knobs in the control box top panel, be located inside and the step motor driver of fixed mounting on the control box top panel of control system, step motor slip table private power, the pressure regulating speed regulator adjusts the temperature, the motor programmer, be located inside and the wiring switch of fixed mounting on the control box side panel of control system, air switch, the temperature tester, 3D printer control panel constitutes jointly.

The heating device is composed of a motor which is connected with a motor threaded rod in a threaded fit manner, one end of the motor is embedded in a motor guide rail, a heating frame support which is fixedly connected with the other end of the motor in a moving manner, a heating frame main body which is fixedly connected with the heating frame support, three heating pipes which are fixedly connected with an upper frame body of the heating frame main body and are uniformly arranged, and an infrared probe which is fixedly arranged on the upper frame body of the heating frame main body.

As a second aspect of the present invention, a vacuum thermoforming method based on 3D printing technology is characterized by comprising the following steps:

the method comprises the following steps: manufacturing a mould model by using three-dimensional software;

step two: printing the mold through a 3D printer;

step three: mounting the PVC sheet on a heating device, heating by using a heating pipe, and simultaneously descending the heating device to be tightly pressed to the top of the mould;

step four: starting a vacuum pump, evacuating the air in the closed space, and contacting the PVC film with the mold to form a vacuum closed space;

step five: the heating device is lifted to the initial position, and the finished product is cooled to the normal temperature by using the cooling fan;

step six: and (5) after the processing is finished, turning off the power supply of the equipment, and taking down the finished product.

The invention has the advantages and positive effects that:

(1) the invention adopts polyvinyl chloride (PVC) as a film covering material, which is one of the most widely used plastic materials, has the advantages of non-inflammability, high strength, weather resistance and excellent geometric stability, and has strong resistance to oxidants, reducing agents and strong acid;

(2) the invention generates the moulds with various shapes by the 3D printing technology, effectively simplifies the manufacturing procedure of the moulds, shortens the development period of the packaging mould, improves the production efficiency and reduces the cost. The positions and the number of the air exhaust holes on the dies are adjusted through different dies, so that the processed plastic package is ensured to be in place for suction molding, the fit is tight, and the phenomena of breakage and air leakage are avoided;

(3) according to the invention, a film is fixed above a forming die through a clamping device, after the film is heated by a heating device, the forming die is closed and vacuumized, pressure difference is formed on two sides of the film, and the film deforms under the action of the pressure difference and is finally attached to the surface of a forming die cavity, so that container forming is completed;

(4) the invention adopts an infrared carbon fiber heating pipe, and adjusts the size and the power according to different machine types;

(5) the invention adopts a self-control system, does not need complicated manual operation, and is simpler to use and safer;

(6) the invention adopts the micro vacuum pump, is arranged on the base and has the characteristics of high vacuum, low noise and high energy;

(7) the angle aluminum clamping piece is adopted for fixing, the PVC film penetrates through the clamping piece, and then the upper angle aluminum and the lower angle aluminum are fixed by the screws, so that the smoothness of the PVC film is ensured, and the operability is simple.

Drawings

FIG. 1 is an overall assembly view of the present invention;

FIG. 2 is a diagram of a frame structure;

FIG. 3 is a block diagram of a 3D printer;

FIG. 4 is a view of another perspective of the 3D printer;

FIG. 5 is a 3D printing platform block diagram;

FIG. 6 is a structural view of a driving apparatus;

FIG. 7 is a diagram of the control system external structure;

FIG. 8 is a view showing the internal structure of the control system;

FIG. 9 is a control system circuit connection diagram;

FIG. 10 is a structural view of a heating apparatus;

fig. 11 is a schematic flow chart of a vacuum thermoforming method based on 3D printing technology according to an embodiment of the present invention.

In the figure: 1. a frame; 2. a 3D printer; 3. a 3D printing platform; 4. a drive device; 5. a control system; 6. a vacuum thermoforming machine; 7. a mold; 8. a vacuum pump; 9. an infrared probe; 10. vacuum thermoforming the frame; 11. vacuum thermoforming the front panel; 12. vacuum thermoforming the left panel; 13. a printer frame; 14. a printer card reader; 15. a printer controller; 16. a printer power switch; 17. a first printer motor; 18. driving a printer motor; 19. a printer motor threaded rod; 20. the printer uses a wheel clip; 21. a first spray nozzle of the printer; 22. a printer use wheel; 23. a second printer motor; 24. a printer motor III; 25. a printer motor IV; 26. a second printer nozzle; 27. a nozzle; 28. a printer pad; 29. a consumable support; 30. a bed body; 31. a platform support; 32. a platform adjustment knob; 33. a motor column; 34. a motor guide rail; 35. a motor top cover; 36. a motor bottom cover; 37. a step motor threaded rod; 38. driving by a stepping motor; 39. a motor base; 40. a control box upper panel; 41. a control box rear panel; 42. a control box side panel; 43. a wiring switch; 44. an air switch; 45. a control knob; 46. a stepper motor driver; 47. a power supply special for the stepping motor sliding table; 48. a temperature-adjusting, pressure-adjusting and speed-adjusting device; 49. a temperature tester; 50. a motor programmer; 51. heating the frame body; 52. heating the frame support; 53. the motor moves; 54. heating a tube; 55. 3D printer control panel.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. As shown in fig. 1, a vacuum thermoforming system based on 3D printing technology includes a 3D printer, a vacuum thermoforming machine, and a control system for controlling the 3D printer and the vacuum thermoforming machine; the control system controls the 3D printer to print a mold with a vacuumizing hole according to the setting of a designer, the printed mold is positioned on a 3D printing platform of the 3D printer, and the control system controls the 3D printing platform to move into the vacuum thermoforming machine; the vacuum thermoforming machine comprises a rack, a heating device which is arranged on the rack and can move up and down along the rack, and a vacuum pump which is arranged at the inner lower part of the rack; the mould is used as an adsorbent of PVC material, can ensure the shape of the packing box meeting the conditions, the vacuum pump is arranged on the base and is used for evacuating air in a closed space, so that the PVC film is fully attached to the mould, and the infrared probe is used for detecting the working temperature of the thermal forming unit, and has the characteristics of high vacuum, low noise and high energy.

As shown in fig. 2, the frame is composed of a vacuum thermoforming frame, a driving device installed on the vacuum thermoforming frame, a vacuum thermoforming front panel fixedly connected with one side of the vacuum thermoforming frame, and a vacuum thermoforming left panel located adjacent to the vacuum thermoforming front panel and fixedly connected with the vacuum thermoforming frame; wherein, the main body frame adopts 3030 section bar, which plays the role of connection, fixation and support, and the panel is used for protection and beauty.

As shown in fig. 3-5, the 3D printer includes a transmission part and a control part, the transmission part is composed of four printer pad feet fixedly connected with the vacuum thermoforming frame, a printer frame fixedly connected with the upper surface of the printer pad feet, a 3D printing platform installed on the printer frame, a printer use wheel matched with a groove on the printer frame, a printer use wheel clamp fixedly connected with the printer use wheel through a screw, a printer motor three fixedly installed in the middle frame of the printer frame, a printer motor one fixedly installed in the other frame of the printer frame, a printer controller located above the printer power switch and fixedly connected with the printer frame, a printer motor driver installed on the upper surface of the printer motor, a printer motor threaded rod with one end fixedly connected with the printer motor driver and the other end connected with the printer use wheel clamp through a screw fit, a printer motor threaded rod, a motor control part, The printer comprises a printer motor II and a printer motor IV which are fixedly arranged on a frame body on one side of the middle part of the printer frame, a printer spray head I and a printer spray head II which are opposite to the printer motor II and are fixedly arranged on the frame body in the middle part of the printer frame, a nozzle arranged on the lower surface of the printer spray head II, and a consumable support fixedly connected to the frame body above the printer frame; the control part is composed of a printer card reader fixedly arranged at the lower part of the printer frame, a printer power switch fixedly connected to the frame body at one side of the printer frame, and a printer controller positioned above the printer power switch and fixedly connected with the printer frame; the 3D printer hot bed is composed of a hot bed support embedded in a frame body at the lower part of a printer frame, hot bed adjusting knobs distributed at four corners of the hot bed support and connected with the hot bed support, and a bed body located above the hot bed support and fixedly connected with the hot bed adjusting knobs; in the work flow of the whole system, the 3D printer is mainly used for manufacturing a mold for adsorbing the plastic packaging box, and the mold is generated by using a 3D printing technology, so that the manufacturing procedure of the mold is effectively simplified, the development period of the packaging mold is shortened, the production efficiency is improved, and the cost is reduced. Through different moulds, the positions and the number of the air exhaust holes on the moulds are adjusted to ensure that the processed plastic package is in place for suction, the joint is tight, and the phenomena of breakage and air leakage cannot occur

As shown in fig. 6, the driving device is composed of a motor base fixedly connected with the vacuum thermal forming front panel, a motor bottom cover fixedly connected with the motor base, a motor column fixedly connected with the upper surface of the motor bottom cover, a motor guide rail fixedly installed in a groove of the motor column, a motor top cover fixedly connected with the upper end of the motor column, a stepping motor threaded rod with one end connected with the motor top cover, and a stepping motor drive connected with the other end of the stepping motor threaded rod and fixed on the upper surface of the motor bottom cover; the device mainly used drives the thermoforming unit and reciprocates, drives the rotation of step motor threaded rod through the step motor drive, and rotatory step motor threaded rod can drive rather than the motor removal through screw-thread fit connection and do the up-and-down motion to drive and the motor removes the motion of fixed connection's heating frame support, realize reciprocating of thermoforming unit.

As shown in fig. 7-8, the control system is composed of a control box upper panel fixedly connected to the vacuum thermoforming frame, a control box side panel fixedly connected to the vacuum thermoforming front panel and the control box upper panel, a control box rear panel fixedly connected to the control box upper panel and the control box side panel, two control knobs installed on the control box upper panel, a stepping motor driver located inside the control box and fixedly installed on the control box upper panel, a stepping motor sliding table dedicated power supply, a temperature and pressure regulating governor, a motor programmer, a wiring switch located inside the control box and fixedly installed on the control box side panel, an air switch, and a temperature tester; the device is the control center of the whole system, wherein a wiring switch is a master switch of the control system, a stepping motor driver, a motor programmer and a special power supply for a stepping motor sliding table are used for driving and controlling the stepping motor driving system, an upper panel, a rear panel and a side panel of a control box are used for connecting a control element and protecting the control system, an air switch is used for protecting the control element from being damaged under special conditions, and a temperature controller can control the temperature to play a role in protection.

As shown in fig. 9, in the control unit, a connection switch, a stepping motor driver, a power supply dedicated to the stepping motor sliding table, a motor programmer, a 3D printer control panel, a temperature tester, and a temperature-adjusting and voltage-regulating speed regulator are connected in series, the stepping motor driver, the power supply dedicated to the stepping motor sliding table, and the motor programmer are connected in parallel and then connected with a stepping motor drive system, the temperature-adjusting and voltage-regulating speed regulator, and the temperature tester are connected in parallel and then connected with a thermoforming unit, and the 3D printer control panel is connected with a 3D printer.

As shown in fig. 10, the heating device is composed of a motor moving which is connected with a motor threaded rod in a thread fit way and one end of which is embedded in a motor guide rail, a heating frame support which is fixedly connected with the other end of the motor moving, a heating frame main body which is fixedly connected with the heating frame support, three heating pipes which are fixedly connected with an upper frame body of the heating frame main body and are uniformly arranged, and an infrared probe which is fixedly arranged on the upper frame body of the heating frame main body; the device can soften and adsorb a PVC film fixed on the device onto a mould by the driving of a stepping motor and the heating of a heating pipe, and simultaneously, the invention adopts polyvinyl chloride (PVC) as a film coating material which is one of the most widely used plastic materials, has nonflammability, high strength, weather resistance and excellent geometric stability, and has strong resistance to oxidant, reducing agent and strong acid, in the processing process, the PVC film is fixed above a forming mould through a clamping device, after the PVC film is heated by a heating device, the forming mould is closed to vacuumize, pressure difference is formed on two sides of the film, the film deforms and is finally attached to the surface of a forming mould cavity under the action of the pressure difference, the container forming is completed, and in the device, the infrared carbon fiber heating pipe is adopted, the size and the power can be adjusted according to different machine types, the angle aluminum clamping piece fixing material is adopted, the PVC film penetrates through the clamping piece, and then the upper angle aluminum and the lower angle aluminum are fixed by using the screws, so that the smoothness of the PVC film is ensured, and the operability is simple.

As shown in fig. 11, a vacuum thermoforming method based on 3D printing technology includes the following steps:

the method comprises the following steps: manufacturing a mould model by using three-dimensional software;

step two: printing the mold through a 3D printer;

step three: mounting a PVC sheet to a heating frame, and heating by using a heating pipe;

step four: starting a vacuum pump, evacuating the air in the closed space, and contacting the PVC film with the mold to form a vacuum closed space;

step five: the heating frame descends, the finished product is cooled to normal temperature by using a cooling fan, and meanwhile, the heating frame returns to the starting point;

step six: and (5) after the processing is finished, turning off the power supply of the equipment, and taking down the finished product.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.