Membrane heating control and appliance production membrane pressing method and heating and membrane pressing system

Abstract

The embodiment of the invention comprises a membrane heating control and appliance production membrane pressing method and heating and membrane pressing system, the membrane heating control method is used for heating a membrane in a dental model-based hot-pressing membrane forming process, and comprises the following steps of: obtaining preset process parameters of the membrane, the preset process parameters comprise a diaphragm material, a diaphragm thickness, a diaphragm heating parameter and a diaphragm sagging depth threshold value; controlling a heating device to heat a membrane placed on a membrane bearing device according to the membrane heating parameters; in the heating process, the film position detection device detects the sagging depth of the film; controlling a pressure intensity adjusting device to adjust the pressure intensity in a diaphragm bearing device according to the sagging depth of the diaphragm, so that the sagging depth of the diaphragm is smaller than a threshold value; and after a signal indicating that the heating of the diaphragm is completed is obtained, the heating device is controlled to complete the heating of the diaphragm.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of dental brace preparation equipment, and in particular to a diaphragm heating control and lamination method, heating and lamination system for brace production. Background Art

[0002] Dental film is the main raw material for the molding of bracketless invisible braces. It is usually composed of one or more different types of resins, such as polyethylene terephthalate, ethylene-vinyl acetate copolymer, polyvinyl acetate, etc. Dental film has certain elasticity, compression resistance, plasticity, and stable physical properties. Clinical use is used to make orthodontic appliances, orthodontic retainers, oral protectors, occlusal pads, etc.

[0003] In the product manufacturing process, dental diaphragms are covered with molds of different shapes to form different products. It is further described as heating the dental diaphragm to a certain temperature to soften it, and then attaching the softened diaphragm to a mold of a specific shape (such as when producing bracketless invisible braces, the mold is a 1:1 simulated tooth model), and then pressurizing the surface of the diaphragm. There are generally two ways of pressurization: 1. Positive air blowing acts vertically on the outer surface of the diaphragm (the inner surface is the side that contacts the model) to form positive pressure; 2. Negative vacuuming acts vertically on the inner surface of the diaphragm to form negative pressure.

[0004] At present, the research object of heat softening of dental diaphragms is mainly on molded products, such as invisible braces. After the diaphragm is molded, the dental diaphragm will sag locally during the heat softening process due to gravity. When the sagging depth reaches a certain level, the thickness of the invisible braces will be uneven after the diaphragm is molded. In this case, the invisible braces after compression molding may have uneven stress or strain or be damaged due to the uneven thickness of the diaphragm, which will cause the invisible braces after compression molding to lose their correction performance and the patient will have poor correction after wearing the braces. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a diaphragm heating control and film pressing method, heating and film pressing system for braces production that effectively solve the above-mentioned problems. The diaphragm position detection device and the pressure regulation device are used to adjust the sagging depth of the diaphragm during the diaphragm heating process, thereby controlling the stretching of the diaphragm during the heating process, so that the correction result of the invisible braces after the diaphragm is pressed is more accurate and stable.

[0006] To achieve the above-mentioned purpose, the embodiment of the application provides a diaphragm heating control method for a hot pressing film forming process based on a dental model, comprising the following steps: obtaining preset process parameters of the diaphragm, the preset process parameters including: diaphragm material, diaphragm thickness, diaphragm heating parameters and a threshold value of the diaphragm sagging depth; controlling a heating device to heat the diaphragm placed on a diaphragm supporting device according to the diaphragm heating parameters; during the heating process, a diaphragm position detection device detects the sagging depth of the diaphragm; controlling a pressure regulating device to adjust the pressure in the diaphragm supporting device according to the sagging depth of the diaphragm so that the sagging depth of the diaphragm is less than the threshold; when a signal indicating that the heating of the diaphragm is completed is obtained, controlling the heating device to complete the heating of the diaphragm.

[0007] Preferably, controlling the pressure regulating device to adjust the pressure in the diaphragm supporting device according to the sagging depth of the diaphragm so that the sagging depth of the diaphragm is less than a threshold value comprises:

[0008] When the diaphragm position detection device detects that the sagging depth of the diaphragm is greater than or equal to the threshold, the pressure regulating device is controlled to inflate the interior of the diaphragm supporting device to increase the pressure inside the diaphragm supporting device so as to reduce the sagging depth of the diaphragm.

[0009] Preferably, the pressure regulating device is controlled to adjust the pressure in the diaphragm supporting device according to the sagging depth of the diaphragm so that the sagging depth of the diaphragm is less than a threshold value, and further includes:

[0010] When the diaphragm position detection device detects that the diaphragm sagging depth is less than the threshold value, the control device controls the pressure regulating device to slow down or stop the air intake to the diaphragm supporting device so that the diaphragm sagging depth is always less than the threshold value.

[0011] Preferably, the method further includes, during the heating process, controlling a pressure detection device disposed inside the diaphragm supporting device to measure a pressure value and / or a pressure change value inside the diaphragm supporting device; when the pressure value and / or the pressure change value is greater than or equal to a preset value, controlling the pressure regulating device to reduce the internal pressure of the diaphragm supporting device.

[0012] Another embodiment of the present application provides a lamination method for orthodontic appliance production, which obtains feeding information and preset process parameters of the diaphragm, and when it is determined according to the feeding information that the diaphragm has reached a set position, controls a heating device to heat the diaphragm according to any one of the heating control methods described above; when a signal that the heating of the diaphragm is completed is obtained, the heated diaphragm is pressed onto a dental model assembly according to the preset lamination process parameters.

[0013] Preferably, when a signal indicating that heating of the membrane is completed is obtained, the heated membrane is pressed onto the dental model component according to predetermined lamination process parameters, including: obtaining the current pressing time, and if the current pressing time reaches the holding time in the lamination process parameters, the lamination is completed.

[0014] Another embodiment of the present application provides a diaphragm heating system for pressing a diaphragm onto a dental model to form an invisible orthodontic appliance, comprising: a control device, a diaphragm supporting device, a heating device, a diaphragm position detection device and a pressure regulation device, wherein the control device is communicatively connected with the diaphragm position detection device and the pressure regulation device; the diaphragm supporting device comprises a supporting plate for supporting and fixing the diaphragm; the heating device is arranged adjacent to the supporting plate, and is used to heat the diaphragm in the supporting plate; the diaphragm position detection device is used to detect the sagging position of the diaphragm when it is softened by heat during the heating process, and the pressure regulation device is connected to the cavity of the diaphragm supporting device; when the diaphragm position detection device detects that the sagging depth of the diaphragm reaches a threshold value, the control device controls the pressure regulation device to adjust the pressure in the cavity to slow down the sagging depth of the diaphragm when it is softened by heat.

[0015] Preferably, the heating device and the diaphragm position detection device are respectively arranged on two sides of the carrying plate.

[0016] Preferably, the heating device is movably disposed above the carrying plate.

[0017] Preferably, the diaphragm carrying device is a cavity structure with at least one end open, and the carrying plate is arranged at the open end.

[0018] Preferably, the diaphragm position detection device is disposed in the cavity of the diaphragm carrying device and is located below the carrying plate.

[0019] Preferably, the diaphragm position detection device comprises an object detection sensor arranged on the inner side wall of the diaphragm carrying device, and the object detection sensor is arranged at a preset distance from the carrying plate.

[0020] Preferably, a second object detection sensor is provided inside the diaphragm position detection device adjacent to the carrier plate, and the second object detection sensor is used to detect the sagging depth of the diaphragm after being adjusted by the pressure regulating device during the heating process.

[0021] Preferably, the diaphragm position detection device comprises a distance measuring sensor arranged on the bottom of the diaphragm supporting device.

[0022] Preferably, the distance measuring sensor is horizontally movably arranged on the bottom of the inner layer of the diaphragm supporting device.

[0023] Preferably, the distance measuring sensor is fixedly arranged on the bottom of the inner layer of the diaphragm supporting device at a position corresponding to the center of the diaphragm.

[0024] Preferably, the heating device is movably disposed below the carrying plate.

[0025] Preferably, the diaphragm position detection device comprises a distance measuring sensor which is at a preset distance from the carrying plate and is arranged above the carrying plate.

[0026] Preferably, the pressure regulating device comprises an air inlet device connected to the bottom of the diaphragm supporting device.

[0027] Preferably, it further comprises a pressure detection device arranged inside the diaphragm supporting device, wherein the pressure detection device is used to measure the pressure value and / or pressure change value inside the diaphragm supporting device.

[0028] One embodiment of the present application relates to a laminating system, comprising: a laminating machine body and a diaphragm heating system as described in any one of the above; the laminating machine body is provided with a laminating chassis and a laminating machine forming groove adjacent to and surrounding the periphery of the laminating chassis; in the laminating state, the opening portion of the diaphragm carrying device is buckled on the laminating chassis and the laminating machine forming groove, and the softened diaphragm heated by the heating system is pressed and adhered to the dental model carried on the laminating chassis to form an orthodontic appliance.

[0029] One embodiment of the present application relates to a film pressing system, comprising: a main workbench, a movable working component, a film pressing component heating component and a diaphragm heating system as described in any one of the above, wherein the main workbench is provided with a first station and a second station; the film pressing component is movably arranged on one side of the main workbench corresponding to the first station and the second station, and the heating device heats the diaphragm placed on the second station, wherein the supporting platform receives a mold assembly at the first station; after the diaphragm is heated, the movable working component moves the supporting platform carrying the mold assembly to the second station, and the film pressing component also synchronously moves to the first station to directly press the heated diaphragm onto the mold to form an orthodontic device.

[0030] The present invention provides a film heating control and film pressing method for orthodontic appliance production, heating and film pressing system, which has at least the following beneficial effects compared with the prior art:

[0031] The diaphragm heating control method, film pressing method and diaphragm heating system in the present application are combined through a diaphragm position detection device and a pressure regulating device, which can accurately check the sagging depth of the diaphragm during the diaphragm heating process, and timely adjust the pressure in the cavity of the diaphragm supporting device through the pressure regulating device to adjust the sagging depth of the diaphragm, thereby ensuring that the diaphragm will not be over-stretched during the heating process, so that the thickness of the orthodontic device after pressing is more uniform and the correction force is more stable and reliable.

[0032] The diaphragm heating system in the present application can also be applied to a semi-automatic or fully-automatic film pressing system, which is simple and convenient to set up and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0034] Figure 1 is a schematic diagram of the principle of a diaphragm heating system in some embodiments of the present application;

[0035] Figure 2 is a schematic diagram of the principle of a diaphragm heating system in some other embodiments of the present application;

[0036] Figure 3 is a schematic structural diagram of a diaphragm supporting device in a diaphragm heating system in some embodiments of the present application;

[0037] Figure 4 is a schematic structural diagram of a diaphragm supporting device in a diaphragm heating system in other embodiments of the present application;

[0038] Figure 5 is a schematic structural diagram of a heating device in a diaphragm heating system in other embodiments of the present application;

[0039] Figure 6 is a schematic diagram of the structure of a diaphragm heating system in some embodiments of the present application;

[0040] Figure 7 It is a schematic diagram of the working state of the diaphragm position detection device and the pressure regulating device in some embodiments of the present application;

[0041] Figure 8 is a schematic diagram of the working state of the diaphragm position detection device in some embodiments of the present application;

[0042] Fig. 9 is a schematic diagram of the working state of the diaphragm position detection device in some embodiments of the present application;

[0043] Fig.10 is a cross-sectional schematic diagram of a heating device in some embodiments of the present application;

[0044] Fig.11 is a cross-sectional schematic diagram of a heating device in some embodiments of the present application;

[0045] Fig.12 is a schematic diagram of the working state of the diaphragm position detection device in some embodiments of the present application;

[0046] Fig.13 is a schematic diagram of the structure of the film pressing system in some embodiments of the present application;

[0047] Fig.14 is a schematic diagram of the structure of the film pressing system in some embodiments of the present application;

[0048] Fig.15 This is a schematic diagram of the structure of the film pressing system in other embodiments of the present application.

[0049] Fig.16 is a flow chart of a diaphragm heating control method in some embodiments of the present application;

[0050] Fig.17 is a flow chart of a lamination method for producing an appliance in some embodiments of the present application;

[0051] Fig.18 It is a structural schematic diagram of a graphics processing unit provided in one embodiment of the present application. DETAILED DESCRIPTION

[0052] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in each embodiment of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not constitute any limitation, and the various embodiments can be combined with each other and referenced to each other without contradiction.

[0053] One embodiment of the present application relates to a diaphragm heating system, such as Figure 1 As shown, the diaphragm heating system specifically includes: a control device, a diaphragm carrying device, a heating device, a diaphragm position detection device and a pressure regulating device for adjusting the internal pressure of the carrying device, and the control device is communicatively connected with the diaphragm position detection device and the pressure regulating device; or Figure 2As shown, the diaphragm heating system includes a heating device that is communicatively connected to the control device, a diaphragm position detection device, and a pressure regulating device that regulates the internal pressure of the carrying device.

[0054] In some embodiments, reference Figure 3-Figure 7 As shown, the diaphragm carrier device 1 has a cavity structure 11 with an opening at one end, and a carrier plate 12 for carrying and fixing the diaphragm 100 is provided at the other end of the opening; the heating device 2 is used to heat the diaphragm 100 in the carrier plate 12, and the heating device 2 is movably arranged above the carrier plate 12, and when the diaphragm 100 needs to be heated, the heating device 2 moves to the top of the carrier plate 12; the diaphragm 100 is a sheet material for preparing invisible braces. The diaphragm position detection device 3 for detecting the sagging position of the diaphragm 100 when it is softened by heat during the heating process is arranged inside the cavity structure 11 and below the carrier plate 12. When the sagging depth of the diaphragm 100 exceeds the threshold value during the heating process, the control device controls the pressure regulating device connected to the inside of the cavity structure 11 to inflate the inside of the cavity structure 11, so that the pressure inside the cavity structure 11 increases and the sagging depth of the diaphragm 100 decreases. When the diaphragm position detection device 3 detects that the sagging depth of the diaphragm 100 softened by heat is less than or equal to the threshold value, the control device controls the pressure regulating device to stop or slow down the inflation of the inside of the diaphragm bearing device 1. The threshold value is pre-set in the control device, which is the threshold value of the diaphragm sagging depth in the preset process parameters. The threshold value can be set to a fixed value, ranging from 0cm to 3cm, or the threshold value can be associated with the material of the diaphragm 100. For example, each diaphragm 100 with a different elastic modulus corresponds to a different threshold value. The pressure regulating device includes a sealing rubber ring connected to the inside of the cavity structure 11 and an air pump connected to the other end of the sealing rubber ring. When the control device sends an inflation command to the pressure regulating device, the air pump compresses the air and inputs it into the cavity structure 11 through the sealing rubber ring, and when the control device sends an inflation stop or inflation reduction command to the pressure regulating device, the air pump stops compressing the air and stops inputting into the cavity structure 11 or slows down the air injected into the cavity structure 11. It should be noted that when the threshold is 0 cm, that is, the diaphragm remains horizontal during the heating process, when the diaphragm position detection device 3 detects that the diaphragm sags when heated, the pressure regulating device inflates the cavity structure 11. In this case, refer to Figure 8 or Fig. 9 In the embodiment, the diaphragm position detection device may be a distance measuring sensor arranged at the bottom of the cavity structure.

[0055] In addition, in various embodiments of the present application, the cavity structure 11 is a relatively closed space, and the pressure regulating device includes inflating and deflating the cavity structure 11. The pressure inside the cavity structure 11 is kept in a dynamic change, so that the sagging depth of the diaphragm can be adjusted at any time. It can be understood that the cavity structure can also be an absolutely closed space, and the pressure inside the cavity structure 11 is adjusted by the pressure regulating device.

[0056] The control device can be any suitable computing device, such as a personal computer, a server, a programmable logic controller (PLC controller), a single-chip microcomputer, etc., or it can be an integration of computer devices. The control device has functions such as receiving information and sending control commands. The control device can control each device to perform corresponding actions through wired communication or wireless communication to complete the preparation of the shell-shaped dental appliance.

[0057] In some embodiments, reference Figure 7 As shown, the diaphragm position detection device 3 includes an object detection sensor disposed on the inner side wall of the diaphragm carrying device 1, and the object detection sensor is disposed at a preset distance Y from the carrying plate 12, and the preset distance is substantially consistent with the sagging depth of the diaphragm 100. The object detection sensor specifically includes a laser transmitter 31 and a laser receiver 32. When the sagging depth of the diaphragm 100 exceeds a threshold value, as shown in FIG. Figure 7 The laser emitted by the laser transmitter 31 is blocked by the diaphragm 100. When the laser receiver 32 cannot receive the laser, the control device controls the pressure regulator to inflate the cavity structure 11 of the diaphragm carrier 1. When the sagging depth of the diaphragm 100 decreases and the laser transmitter 31 receives the laser again, the control device controls the pressure regulator to stop or slow down the inflation of the inside of the diaphragm carrier 1.

[0058] In some embodiments, a second object detection sensor is further provided inside the diaphragm position detection device near the carrier plate 12 for detecting the sagging depth of the diaphragm after adjustment by the pressure regulating device during the heating process, and the second object detection sensor is arranged above the object detection sensor. When the pressure regulating device inflates the inside of the diaphragm carrier 1, the diaphragm sagging position may not be uniformly adjusted during the upward movement due to the uneven and unstable pressure inside the diaphragm carrier 1, and the second object detection sensor can detect whether the diaphragm near the carrier plate 12 still has an uneven sagging depth.

[0059] In some embodiments, reference Figure 7As shown, the diaphragm heating system also includes a pressure detection device 5 disposed inside the diaphragm bearing device, and the pressure detection device 5 is used to measure the pressure value and / or pressure change value inside the diaphragm bearing device. When the pressure detection device 5 detects that the pressure value inside the diaphragm bearing device is too large, it may cause the diaphragm to stretch upward, which is not expected. Therefore, when the pressure value is too large, the control device controls the pressure regulating device to readjust the pressure inside the cavity structure 11 of the diaphragm bearing device. Also, when the pressure detection device 5 detects that the pressure value inside the diaphragm bearing device changes too much, it may cause the stretching depth of the diaphragm to not be evenly adjusted. When the pressure value changes greater than a preset value, the control device controls the pressure regulating device to slow down or stop the air intake.

[0060] In some embodiments, reference Figure 8 and Fig. 9 As shown, the distance measuring sensor 33 is horizontally movable and arranged on the bottom of the inner layer (inside the cavity structure 11) of the membrane carrier 1. The distance measuring sensor 33 corresponds to any straight line ( Figure 8 The cavity structure 11 is movable in the X direction. Specifically, a linear guide rail (not shown in the figure) is provided at the bottom of the cavity structure 11. The distance sensor 33 is provided on the guide rail. The distance sensor 33 can adopt an existing ultrasonic distance sensor, laser distance sensor, or infrared distance sensor. Figure 8 As shown, during the heating process, the distance sensor 33 slides along the X-axis direction of the linear guide rail to measure the sagging depth of the diaphragm 100 in the vertical direction (Z-axis direction in the figure). The measurement principle of the laser distance sensor 33 is to emit a modulated light wave that is reflected by the measured object and then received by the distance meter. The phase difference or time difference of the modulated light wave going back and forth to the measured distance is measured to indirectly obtain the measured distance. Since the heated diaphragm 100 in each embodiment of the present application can be covered with an opaque protective film, the laser distance sensor 33 can be used to measure the depth of the diaphragm 100 drooping after heating.

[0061] In other embodiments, the distance measuring sensor 33 can be fixedly disposed on the bottom of the inner layer (inside the cavity structure 11) of the diaphragm supporting device 1. Since the edges of the diaphragm 100 are fixed on the supporting plate 12, the center of the diaphragm 100 is at the maximum sagging depth during the heating process. Therefore, the distance measuring sensor 33 is fixed at the position corresponding to the center of the diaphragm 100, which can control the stretching amount of the diaphragm 100 during the heating process by measuring the sagging depth at the center of the diaphragm 100.

[0062] The heating device 2 itself further includes a heat reflection structure 22 , which can be arranged between the infrared heater 21 and the membrane 100 , or on a side of the membrane 100 away from the infrared heater. Fig.10is a cross-sectional schematic diagram of a heating device 2, Fig.10 The heat reflection structure 22 shown in FIG. 1 is arranged on the side of the film 100 facing away from the infrared heater 21 . Fig.11 is a cross-sectional schematic diagram of another heating device 2, Fig.11 The heat reflection structure 22 shown in FIG. 1 is arranged between the infrared heater 21 and the film 100 .

[0063] Specifically, the heat reflection structure 22 is disposed at at least one position of the inner side wall and the inner bottom of the cavity structure 11. When the heating device 2 is in the state of heating the diaphragm 100, the diaphragm 100 is laid on the opening of the carrier plate 12, and the heat reflection structure 22 is used to reflect the heat radiation emitted by the infrared heater onto the diaphragm 100.

[0064] In some embodiments, the heat reflective structure 22 includes an infrared reflective layer. The infrared reflective layer can be pasted, that is, the infrared reflective layer is pasted on the supporting structure in the heat reflective structure 22. The infrared reflective layer can also be sprayed, that is, it is directly sprayed on the supporting structure in the heat reflective structure 22 to form an infrared reflective layer. The infrared reflective layer can reflect and circulate the thermal radiation emitted by the infrared heater to the maximum extent, further improving the quality of the prepared orthodontic device. The infrared reflective layer can be a metal-plated reflective layer, for example, it can include a silver-plated reflective layer and / or a gold-plated reflective layer. The gold-plated reflective layer and the silver-plated reflective layer can provide very high reflectivity for infrared radiation, as well as very high environmental stability, further improving the reflection efficiency.

[0065] In some embodiments, reference Fig.12 As shown, the distance sensor 33 can be arranged above the carrier plate 12, that is, during the heating process, the distance sensor 33 is arranged above the membrane 100. Alternatively, in other embodiments, referring to Figure 3 As shown, the heating device 2 can be arranged in the cavity structure 11. When the heating device 2 is working, a heat preservation cover 4 can be added to the opening of the diaphragm carrier plate 12 to seal the cavity during heating. The distance measuring sensor 33 is arranged inside the heat preservation cover 4.

[0066] An embodiment of the present application further provides a lamination system 700, referring to Fig.13 and Fig.14 As shown, it includes: a laminating machine body 62 and a diaphragm heating system 61; the laminating machine body 62 is provided with a laminating chassis 621 and a laminating machine forming groove adjacent to and surrounding the periphery of the laminating chassis 621; in the laminating state, the opening portion of the diaphragm carrying device 1 is buckled on the laminating chassis 621 and the laminating machine forming groove, and the softened diaphragm 100 heated by the heating system is pressed and adhered to the dental model carried on the laminating chassis 621 to form an orthodontic appliance.

[0067] Continue to refer Figure 13-14 As shown, a laminating machine body 62 is provided with a laminating chassis 621 and a laminating machine forming groove adjacent to and surrounding the periphery of the laminating chassis 621. A connecting pin is also provided on the laminating machine body 62, and the connecting pin is used to connect the carrier plate 12 of the heating device 2. A rotating hole is also provided on the laminating machine body 62, and the rotating hole is used to connect the infrared heater. An air pump device and an air pressure valve are also provided on the laminating machine body 62, and the two are used for pressurization and pressure maintenance in the laminating state of the laminating machine. The laminating machine body 62 is also provided with a main power switch 622, a temperature control button 623, an air pressure control button 624, and a display screen 625. The display screen 625 is used to display the heating temperature of the heating device 2 and the air pressure value in the laminating state. The main power switch is used to control the opening and closing of the laminating machine, the temperature control button 623 is used to set the heating temperature of the heating device 2, and the air pressure control button 624 is used to set the air pressure value in the laminating state.

[0068] The infrared heater of the laminator in the idle state is placed separately from the carrier plate 12. To prevent loss, the pressure-maintaining cover can also be placed on the carrier plate 12 in the idle state. A connecting bolt is provided on the outer wall of the cavity structure 11, and the connecting bolt rotates in the connecting pin of the laminator body 62 to drive the carrier plate 12 to be rotatably connected to the laminator body 62 in a vertical plane. A rotating arm is provided on the outer wall of the heat insulation cover of the infrared heater, and a pillar is provided at one end of the rotating arm away from the heat insulation cover. A rotating hole is provided on the laminator body 62, and the pillar is embedded in the rotating hole and rotates in the rotating hole to drive the infrared heater to be rotatably connected to the laminator body 62 in a horizontal plane. For easy holding, a diaphragm carrier plate 12 handle is provided on the carrier plate 12, and an infrared heater handle is provided on the infrared heater.

[0069] In the heated state, Fig.13 As shown, the infrared heater is rotated to the top of the carrier plate 12, facing the film 100 carried on the carrier plate 12, and is ready to enter the heating state. The working details of the heating device 2 in the heating state are roughly the same as those in the above-mentioned heating device 2 embodiment, and will not be repeated here.

[0070] In some examples, the infrared heater is provided with a sensor, which is used to control the infrared lamp to turn on heating when it senses that the infrared heater is facing the diaphragm 100 carried on the diaphragm carrier plate 12, and to control the infrared lamp to turn off heating when it senses that the infrared heater is located at another position facing the diaphragm 100 carried on the diaphragm carrier plate 12. The sensor can be provided on the rotating wall of the infrared heater.

[0071] In some examples, the sensor is an RFID sensor, and an RFID tag is disposed at a corresponding position of the film carrier plate 12 . When the RFID sensor scans the RFID tag, it can be determined that the infrared heater is facing the film 100 carried on the film carrier plate 12 .

[0072] In the film pressing state, the opening of the carrier plate 12 is buckled on the film pressing chassis 621 and the film pressing machine molding groove. The air pump device arranged on the film pressing machine body 62 is connected to the air inlet of the carrier plate 12, and is used to add air pressure to the cavity structure 11 through the air inlet when the air pressure valve is placed in the first rotation position, and stop adding air pressure after the pressurization countdown ends. The air pressure valve is used to be placed in the first rotation position in the film pressing state to block the exhaust hole of the carrier plate 12, and not block the exhaust hole of the carrier plate 12 when placed in the second rotation position in the non-film pressing state. The film pressing chassis 621 is detachably arranged in the molding groove of the film pressing machine, and a pressure relief hole is arranged on the film pressing chassis 621. The pressure relief hole is used to release the air pressure in the molding groove of the film pressing machine after the film pressing state ends.

[0073] The heated and softened membrane 100 on the heating device 2 is pressed and adhered to the dental model carried on the lamination base 621 to form an orthodontic appliance.

[0074] An embodiment of the present application further provides a lamination system 800, referring to Fig.15The film pressing system includes a main workbench, a movable working component, a heating component and a film pressing component 830, and the heating component corresponds to the film heating system in each embodiment of the present application. Among them, the main workbench is provided with a first station 810 and a second station 820; the film pressing component 830 is movably arranged on one side of the main workbench corresponding to the first station 810 and the second station 820, and the heating device 2 heats the film 100 placed on the second station 820. The heating device 2 can be arranged above or below the second station 820, and the distance sensor 33 is arranged on the other side of the second station 820. In addition, the carrier platform receives a mold assembly at the first station 810; after the film 100 is heated, the movable working component moves to move the carrier platform carrying the mold assembly to the second station 820, and the film pressing component 830 also moves to the first station 810 synchronously to directly press the heated film 100 on the mold. In this embodiment, the mobile working component cooperates with the first station 810 and the second station 820 on the main workbench, and the support platform carries the mold and the diaphragm 100 for heating at the same time. After the heating is completed, the mobile working component drives the mold to the first station 810, and the heated diaphragm 100 is directly pressed onto the mold through the film pressing component 830. Compared with the film pressing scheme in the prior art, the film pressing time is shortened, the processing efficiency is improved, and the processing efficiency of the shell-shaped dental braces is thereby improved. Moreover, the film pressing system provided in this embodiment is cleverly designed, has a compact structure, a small size, and a low cost, and can be applied to semi-automatic or fully-automatic production and manufacturing systems of shell-shaped dental braces. In this embodiment, the mold assembly includes a dental model carrier plate 12 and a dental model placed on the dental model carrier plate 12, and the lamination system is used to press the membrane 100 onto the dental model to make a shell-shaped dental orthodontic appliance; of course, in other embodiments, the mold assembly is not limited to the above, and the present invention is not limited to the lamination of shell-shaped dental orthodontic appliances. The lamination system provided by the present invention is suitable for pressing the membrane 100 of any mold and has a wide range of applications.

[0075] The present application provides a film heating control method for a hot pressing film forming process based on a dental model, the method comprising the following steps, the specific process is as follows: Fig.16 As shown:

[0076] Step 201, obtain the preset process parameters of the diaphragm, and the preset process parameters include: diaphragm material, diaphragm thickness, diaphragm heating parameters and threshold value of diaphragm sagging depth. The threshold setting of the diaphragm sagging depth is related to the material and thickness of the diaphragm, and the heating parameters of the diaphragm are also related to the material and thickness of the diaphragm. For example, the diaphragm heating parameters include different heating durations, heating temperatures and film pressing and holding times for diaphragms of different materials and / or different thicknesses. Similarly, according to the different stretching values ​​of different diaphragm materials and diaphragm thicknesses, in order to obtain a shell-shaped appliance that meets production requirements, it is necessary to set different threshold values ​​of diaphragm sagging depth for diaphragms of different materials and / or different thicknesses.

[0077] Step 202: Control a heating device to heat the diaphragm placed on the diaphragm supporting device according to the diaphragm heating parameters.

[0078] Step 203, during the heating process, the diaphragm position detection device detects the sagging depth of the diaphragm; according to the sagging depth of the diaphragm, the pressure regulating device is controlled to adjust the pressure in the diaphragm bearing device so that the sagging depth of the diaphragm is less than a threshold value. When the diaphragm position detection device detects that the sagging depth of the diaphragm is greater than or equal to the threshold value, the pressure regulating device is controlled to inflate the inside of the diaphragm bearing device to increase the pressure in the diaphragm bearing device so as to reduce the sagging depth of the diaphragm; when the diaphragm position detection device detects that the diaphragm sagging depth is less than the threshold value, the control device controls the pressure regulating device to slow down or stop the air intake to the diaphragm bearing device so as to keep the diaphragm sagging depth less than the threshold value.

[0079] Step 204, after obtaining the signal indicating that the heating of the diaphragm is completed, the heating device is controlled to complete the heating of the diaphragm. Specifically, during the heating process, the heating temperature of the diaphragm can also be obtained through the temperature sensor, and the heating time in the diaphragm heating parameters can be controlled to be reached. The heating controller feeds back the parameters of the heating device during the heating process to the control device in real time. When the parameters meet the diaphragm heating parameters, the heating of the diaphragm is completed.

[0080] In some other embodiments, during the heating process, a pressure detection device disposed inside the diaphragm carrier device is controlled to measure the pressure value and / or pressure change value inside the diaphragm carrier device; when the pressure value and / or pressure change value is greater than or equal to a preset value, the pressure regulating device is controlled to reduce the pressure inside the diaphragm carrier device. The provision of the pressure detection device can avoid the problem of reverse stretching of the diaphragm or uneven stretching of the diaphragm surface when the pressure value or pressure change value inside the diaphragm carrier device is too large.

[0081] The present application provides a film heating control method for a hot pressing film forming process based on a dental model, the method comprising the following steps, the specific process is as follows: Fig.17 As shown:

[0082] Step 301, obtaining material loading information and preset process parameters of the membrane, the material loading information includes whether the membrane has reached the set position, and whether the membrane specifications correspond to the dental model obtained from the pre-stored parameter data. The preset process parameters of the membrane include membrane preheating parameters, heating parameters, and membrane sagging depth thresholds.

[0083] Step 302: When it is determined according to the feeding information that the film has reached a set position, the heating device is controlled to heat the film according to any one of the heating control methods described above.

[0084] Step 303, when a signal indicating that the heating of the membrane is completed is obtained, the heated membrane is pressed onto the dental model component according to predetermined lamination process parameters, wherein the lamination process parameters include a holding time. Based on the current pressing time, if the current pressing time reaches the holding time in the lamination process parameters, the lamination is completed.

[0085] It is worth mentioning that all modules involved in this embodiment are logic modules. In practical applications, a logic unit can be a physical unit, a part of a physical unit, or a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, this embodiment does not introduce units that are not closely related to solving the technical problem proposed by the present invention, but this does not mean that there are no other units in this embodiment.

[0086] One embodiment of the present invention relates to an electronic device, such as Fig.18 As shown, it includes at least one processing unit 401; and

[0087] A storage unit 402 in communication with the at least one processing unit 401; wherein,

[0088] The storage unit 402 stores instructions that can be executed by the at least one processing unit 401, and the instructions are executed by the at least one processing unit 401 so that the at least one processing unit 401 can execute a heating control method for a membrane or a lamination method for producing an orthodontic device.

[0089] Among them, the storage unit and the processing unit are connected in a bus manner, and the bus may include any number of interconnected buses and bridges, and the bus connects various circuits of one or more processing units and storage units together. The bus can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art, and therefore, are not further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. The data processed by the processing unit is transmitted on a wireless medium through an antenna, and further, the antenna also receives data and transmits the data to the processing unit.

[0090] The processing unit is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The storage unit can be used to store data used by the processing unit when performing operations.

[0091] One embodiment of the present invention relates to a computer-readable storage medium storing a computer program, which implements the above method embodiment when executed by a processing unit.

[0092] That is, those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processing unit (processor) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory unit (ROM, Read-Only Memory), random access memory unit (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0093] In other embodiments, in order to achieve large-scale production or adjust the production line capacity, the laminating equipment described in the present invention can also be set up in multiple single / double settings, etc. There can be many ways to set it up, which can be selected and adjusted according to specific circumstances. It is not the only implementation method shown in the figure, and no specific limitation is made here.

[0094] It should be noted that the above embodiments can be freely combined as needed to form different new implementation plans without causing any contradiction. The implementation plans formed by such combination are all within the protection scope of the present invention. In order to save the length of the application text, they will not be described in detail here.

[0095] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

[0096] Similarly, the above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A diaphragm heating control method for heating a diaphragm in a hot pressing film forming process based on a dental model, characterized in that: The steps include: Acquire preset process parameters of the diaphragm, wherein the preset process parameters include: diaphragm material, diaphragm thickness, diaphragm heating parameters, and a threshold value of diaphragm sagging depth; Controlling the heating device to heat the diaphragm placed on the diaphragm supporting device according to the diaphragm heating parameters; During the heating process, the diaphragm position detection device detects the sagging depth of the diaphragm; the pressure regulating device is controlled to adjust the pressure in the diaphragm bearing device according to the sagging depth of the diaphragm so that the sagging depth of the diaphragm is less than a threshold value; When the signal indicating that the heating of the diaphragm is completed is obtained, the heating device is controlled to complete the heating of the diaphragm.

2. The diaphragm heating control method according to claim 1, characterized in that: According to the sagging depth of the diaphragm, the pressure regulating device is controlled to adjust the pressure in the diaphragm supporting device so that the sagging depth of the diaphragm is less than a threshold value, including: When the diaphragm position detection device detects that the sagging depth of the diaphragm is greater than or equal to the threshold, the pressure regulating device is controlled to inflate the interior of the diaphragm supporting device to increase the pressure inside the diaphragm supporting device so as to reduce the sagging depth of the diaphragm.

3. The diaphragm heating control method according to claim 2, characterized in that: According to the sagging depth of the diaphragm, the pressure regulating device is controlled to adjust the pressure in the diaphragm supporting device so that the sagging depth of the diaphragm is less than a threshold value, and further includes: When the diaphragm position detection device detects that the diaphragm sagging depth is less than the threshold value, the control device controls the pressure regulating device to slow down or stop the air intake to the diaphragm supporting device so that the diaphragm sagging depth is always less than the threshold value.

4. The diaphragm heating control method according to any one of claims 1 to 3, characterized in that: It also includes, during the heating process, controlling a pressure detection device disposed inside the diaphragm supporting device to measure a pressure value and / or a pressure change value inside the diaphragm supporting device; when the pressure value and / or the pressure change value is greater than or equal to a preset value, controlling the pressure regulating device to reduce the internal pressure of the diaphragm supporting device.

5. A lamination method for producing an appliance, characterized in that: Obtain feeding information and preset process parameters of the diaphragm, and when it is determined according to the feeding information that the diaphragm has reached the set position, control the heating device to heat the diaphragm according to the heating control method according to any one of claims 1 to 4; when a signal that the heating of the diaphragm is completed is obtained, press the heated diaphragm onto the dental model assembly according to the predetermined lamination process parameters.

6. A lamination method for producing an appliance according to claim 5, characterized in that: When a signal indicating that heating of the membrane is completed is obtained, the heated membrane is pressed onto the dental model component according to predetermined lamination process parameters, including: obtaining the current pressing time, and if the current pressing time reaches the holding time in the lamination process parameters, the lamination is completed.

7. A membrane heating system for pressing a membrane onto a dental model to form an invisible orthodontic appliance, characterized in that: include: A control device, a diaphragm supporting device, a heating device, a diaphragm position detection device and a pressure regulation device, wherein the control device is in communication with the diaphragm position detection device and the pressure regulation device; the diaphragm supporting device comprises a supporting plate for supporting and fixing the diaphragm; the heating device is disposed adjacent to the supporting plate and is used to heat the diaphragm in the supporting plate; the diaphragm position detection device is used to detect the sagging position of the diaphragm when it is softened by heat during the heating process, and the pressure regulation device is connected to the cavity of the diaphragm supporting device; when the diaphragm position detection device detects that the sagging depth of the diaphragm reaches a threshold value, the control device controls the pressure regulation device to adjust the pressure in the cavity to slow down the sagging depth of the diaphragm when it is softened by heat.

8. The diaphragm heating system according to claim 7, characterized in that: The heating device and the diaphragm position detection device are respectively arranged on two sides of the carrying plate.

9. The diaphragm heating system according to claim 8, characterized in that: The heating device is movably arranged above the carrying plate.

10. The diaphragm heating system according to claim 9, characterized in that: The diaphragm carrying device is a cavity structure with at least one end open, and the carrying plate is arranged at the open end.

11. The diaphragm heating system according to claim 10, characterized in that: The diaphragm position detection device is arranged in the cavity of the diaphragm carrying device and is located below the carrying plate.

12. The diaphragm heating system according to claim 11, characterized in that: The diaphragm position detection device comprises an object detection sensor arranged on the inner side wall of the diaphragm carrying device, and the object detection sensor is arranged at a preset distance from the carrying plate.

13. The diaphragm heating system according to claim 11, characterized in that: A second object detection sensor is also provided inside the diaphragm position detection device adjacent to the carrier plate, and the second object detection sensor is used to detect the sagging depth of the diaphragm after being adjusted by the pressure regulating device during the heating process.

14. The diaphragm heating system according to claim 11 or 12, characterized in that: The diaphragm position detection device includes a distance measuring sensor arranged on the bottom of the diaphragm supporting device.

15. The diaphragm heating system according to claim 14, characterized in that: The distance measuring sensor is horizontally movably arranged on the bottom of the inner layer of the diaphragm carrying device.

16. The diaphragm heating system according to claim 14, characterized in that: The distance measuring sensor is fixedly arranged on the bottom of the inner layer of the diaphragm carrying device at a position corresponding to the center of the diaphragm.

17. The diaphragm heating system according to claim 8, characterized in that: The heating device is movably arranged below the carrying plate.

18. The diaphragm heating system according to claim 17, characterized in that: The diaphragm position detection device includes a distance measuring sensor which is at a preset distance from the carrying plate and is arranged above the carrying plate.

19. The diaphragm heating system according to claim 7, characterized in that: The pressure regulating device comprises an air inlet device which is connected to the bottom of the diaphragm supporting device.

20. The diaphragm heating system according to claim 19, characterized in that It also includes a pressure detection device arranged inside the diaphragm supporting device, and the pressure detection device is used to measure the pressure value and / or pressure change value inside the diaphragm supporting device.

21. A film pressing system, characterized in that: include: A laminating machine body and a diaphragm heating system as described in any one of claims 7 to 20; the laminating machine body is provided with a laminating chassis and a laminating machine forming groove adjacent to and surrounding the periphery of the laminating chassis; in the laminating state, the opening of the diaphragm carrying device is buckled on the laminating chassis and the laminating machine forming groove, and the softened diaphragm heated by the heating system is pressed and adhered to the dental model carried on the laminating chassis to form an orthodontic appliance.

22. A film pressing system, characterized in that: include: A main workbench, a movable working component, a film pressing component heating component and a diaphragm heating system as described in any one of claims 7-20, wherein the main workbench is provided with a first station and a second station; the film pressing component is movably arranged on one side of the main workbench corresponding to the first station and the second station, and the heating device heats the diaphragm placed on the second station, wherein the supporting platform receives a mold assembly at the first station; after the diaphragm is heated, the movable working component moves the supporting platform carrying the mold assembly to the second station, and the film pressing component also synchronously moves to the first station to directly press the heated diaphragm onto the mold to form an orthodontic device.

Images