A molding die device for invisible orthodontic appliance without brackets

Abstract

The present invention relates to the technical field of appliance processing equipment, and specifically to a molding die device for bracketless invisible orthodontic appliance. The molding device includes a shell, a support plate, a molding mechanism, a heating mechanism and a vacuum mechanism. The shell is used to provide a cavity for molding, the support plate is fixedly connected in the cavity, and is used to carry the lower diaphragm. The molding mechanism includes a lifting component and an adsorption component. The adsorption component is used to adsorb the upper diaphragm, the lifting component is used to drive the adsorption component to lift, the heating mechanism is used to heat the upper and lower diaphragms, and the vacuum mechanism includes a hole opening component and an exhaust component. The present invention uses a hole opening component to open a hole in the lower diaphragm, and an exhaust component to vacuum the cavity surrounded by the upper and lower diaphragms along the hole opening position, which can avoid the occurrence of bubbles when the appliance is pressed and molded, so that the molded appliance fits the dental mold better, and the quality of the molding is improved. At the same time, the position of the hole opening component is adjustable, and it can be suitable for molds of different shapes and sizes.

Description

Technical Field

[0001] The invention relates to the technical field of orthodontic appliance processing equipment, and in particular to a molding die device for a bracketless invisible orthodontic appliance. Background Art

[0002] A bracketless invisible orthodontic appliance is a device used for tooth correction. Unlike traditional fixed appliances, it does not have brackets, but uses a transparent shell. In order to ensure that the appliance can fit the patient's teeth accurately, molding is required. The molding device is usually made of a soft material. After the patient puts it into the mouth, it will harden after a short period of time to form a mold that conforms to the shape of the patient's teeth, that is, a dental mold. Then, by pressing the diaphragm material on the dental mold, a bracketless invisible orthodontic appliance is made. The appliance made in this way can ensure that every part of the appliance fits the patient's teeth, thereby improving the correction effect.

[0003] The Chinese patent application document with the publication number CN117565367A discloses "a molding die device for a bracketless invisible orthodontic appliance", which includes a frame, a controller is installed on the outside of the frame, a negative pressure vacuum pump is installed inside the frame, a loading platform is arranged on the top of the frame, a rotating shaft that can rotate automatically is arranged on the top of the frame, the rotating shaft is located on the side of the guide column away from the loading platform, an upper wind hood is fixedly connected to the top of the rotating shaft, a lower wind hood that can automatically rise and fall is arranged on the outside of the rotating shaft, and electric heating plates are arranged inside the upper wind hood and the lower wind hood. The present invention can heat both sides of the diaphragm at the same time by placing the diaphragm in the heating space between the upper wind hood and the lower wind hood, so that the softening efficiency is high, and under the blowing of the airflow, both sides of the diaphragm will be cleaned first, so as to ensure high molding quality and ensure that the diaphragm is always softened in a flat posture and softened evenly.

[0004] Although the above invention patent solves the problem of uniform heating of the diaphragm, it is difficult to effectively press the diaphragm onto the dental mold due to the irregular shape of the mold, the different tooth structures of each person, and the different shapes and sizes of the dental molds. In addition, in the molding of invisible braces, it is difficult to completely evacuate the cavity between the diaphragm and the dental mold, which leads to bubbles or difficulty in completely fitting the dental mold, resulting in low molding quality. Summary of the invention

[0005] Based on this, it is necessary to propose a bracketless invisible orthodontic appliance molding die device to address the problem that the existing invisible braces are prone to poor molding quality due to incomplete vacuuming during the molding process.

[0006] The present invention is achieved through the following technical scheme: a molding die device for a bracketless invisible orthodontic appliance comprises a shell, a support plate, a molding mechanism, a heating mechanism and a vacuum mechanism.

[0007] The housing is used to provide a cavity for die forming. The support plate is fixedly connected in the cavity and is used to carry the lower diaphragm. The die-forming mechanism includes a lifting assembly and an adsorption assembly, and the adsorption assembly is used to adsorb the upper diaphragm. The lifting assembly is used to drive the adsorption assembly to lift and lower so that the upper diaphragm moves to fit with the die and the lower diaphragm. The heating mechanism is used to heat the upper and lower diaphragms. The vacuuming mechanism includes a hole-opening assembly and an exhaust assembly, and the hole-opening assembly is used to open a hole in the die. The exhaust assembly is connected to the hole-opening assembly and is used to exhaust air from the cavity between the upper diaphragm and the lower diaphragm.

[0008] The above-mentioned die pressing device drives the partition to move downward by starting the lifting assembly until the upper diaphragm contacts the dental mold, and reversely energizes the electromagnet to move the moving rod upward until the top end exceeds the top surface of the hollow rod. At the same time, the suction cup in the outermost circle abuts against the lower diaphragm, a hole is opened in the lower diaphragm, and a vacuum treatment is performed along the hole position, thereby achieving vacuuming of the cavity between the upper and lower diaphragms, avoiding the formation of bubbles when the orthodontic appliance is pressed and formed, making the formed orthodontic appliance fit the dental mold better, and improving the quality of die pressing.

[0009] Furthermore, the adsorption component includes an air pump, a partition, a distributor, multiple springs and multiple suction cups, and the air pump is arranged on the outside of the shell. The distributor includes a main air pipe and multiple branch air pipes. The main air pipe is connected to the air pump, and an electronic valve is installed on the main air pipe. Multiple branch air pipes are connected to the suction cups through the partition respectively. The partition is arranged in the cavity of the shell. The suction cup is located on the side of the upper diaphragm away from the lower diaphragm. Each spring is sleeved on the outside of an air distribution pipe, one end of the spring abuts against the suction cup, and the other end abuts against the partition. The upper diaphragm is adsorbed and squeezed by multiple air distribution pipes. Under the action of the spring, the multiple air distribution pipes can press down on different positions of the upper diaphragm, so that the upper diaphragm can better fit on the dental mold and the lower diaphragm, which not only improves the efficiency of extrusion molding, but also is suitable for more dental molds of different shapes and sizes.

[0010] Furthermore, a sealing ring is fixedly connected to the outer ring of the partition, and the sealing ring is in contact with the inner wall of the outer shell.

[0011] Furthermore, the lifting assembly includes a driver and a pressure sensor. The driver is installed in the housing and is used to drive the partition to move up and down. The pressure sensor is installed between the driver and the partition. The driver is controlled by the pressure detected by the pressure sensor to drive the lifting movement of the driving assembly to avoid damage to the upper and lower diaphragms or the dental mold, thereby achieving precise control of the molding process.

[0012] Furthermore, the hole opening assembly includes a base plate, a plurality of hole openers, and a plurality of adjusters. The base plate is installed in the cavity of the housing and is located below the support plate. The plurality of hole openers are installed on the base plate and are slidably connected to the base plate, and the plurality of hole openers are divided into two groups and are respectively located on both sides of the dental mold. The adjuster is installed on the base plate and is used to adjust the distance between the hole opener and the dental mold.

[0013] Furthermore, the hole opener includes a hollow rod, a moving rod, and an electromagnet, wherein the hollow rod is fixedly connected to the bottom plate. The moving rod is arranged in the hollow rod and is slidably connected to the hollow rod. The electromagnet is installed in the hollow rod. By energizing the electromagnet in the forward or reverse direction, the electromagnet and the moving rod generate magnetic forces of the same or opposite sex, thereby controlling the position of the moving rod to meet the needs of opening and resetting the lower diaphragm. At the same time, by moving the moving rod in the hollow rod, the hollow rod is connected or disconnected from the second distributor, thereby achieving vacuuming between the upper and lower diaphragms. By providing the electromagnet, not only the efficiency of opening the hole is improved, but also the opening control is easier to perform, thereby meeting the opening action in the dental model process and preventing the upper diaphragm from being opened at the same time.

[0014] Furthermore, the regulator includes a displacement sensor and an electric telescopic rod. One end of the electric telescopic rod is fixedly connected to the base plate, and the other end is fixedly connected to the hole opener. The displacement sensor is installed on the hole opener to detect the distance between the hole opener and the dental mold. Through the distance detected by the displacement sensor, the electric telescopic rod is controlled to drive the hole opener to slide in the through groove of the support plate, so that the hole opener is just located on both sides of the dental mold, which can be suitable for dental molds of different shapes and sizes.

[0015] Furthermore, the air extraction assembly includes a distributor 2 and an electronic valve 2. The distributor 2 includes a main air pipe 2 and a plurality of branch air pipes 2. The main air pipe 2 is connected to the air pump. The plurality of branch air pipes 2 are connected to the hollow rods one by one. The electronic valve 2 is installed on the main air pipe 2.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention starts the lifting assembly to drive the partition to move downward until the upper diaphragm contacts the dental mold, and reversely energizes the electromagnet to move the moving rod upward until the top end exceeds the top surface of the hollow rod. At the same time, the suction cup in the outermost circle abuts against the lower diaphragm, a hole is opened in the lower diaphragm, and a vacuum treatment is performed along the hole position, thereby achieving vacuuming of the cavity between the upper and lower diaphragms, avoiding the occurrence of bubbles when the orthodontic appliance is pressed and formed, making the formed orthodontic appliance fit the dental mold more closely, and improving the quality of the compression molding.

[0018] 2. The present invention can adsorb and extrude the upper diaphragm through multiple air distribution pipes. Under the action of the spring, the multiple air distribution pipes can press down different positions of the upper diaphragm, so that the upper diaphragm can better fit on the dental mold and the lower diaphragm, which not only improves the efficiency of extrusion molding, but also is suitable for more dental molds of different shapes and sizes.

[0019] 3. The present invention controls the electric telescopic rod to drive the hole opener to slide in the through slot of the support plate through the distance detected by the displacement sensor, so that the hole opener is just located on both sides of the dental mold, and can be suitable for dental molds of different shapes and sizes.

[0020] 4. The present invention adopts an infrared heater for heating. The infrared heater can perform non-contact heating on the upper diaphragm and the lower diaphragm, so that heating of other components can be avoided during the heating process. At the same time, the heating range of the infrared heater is more precise, which is convenient for controlling the temperature of the upper diaphragm and the lower diaphragm, and helps to improve the molding efficiency and molding effect.

[0021] 5. The present invention generates magnetic forces of the same or opposite sex between the electromagnet and the moving rod by energizing the electromagnet in the forward or reverse direction, thereby controlling the position of the moving rod to meet the needs of opening and resetting the lower diaphragm. At the same time, the hollow rod is connected or disconnected with the distributor 2 by the movement of the moving rod in the hollow rod, thereby achieving vacuuming between the upper and lower diaphragms. The electromagnet is provided to not only improve the efficiency of opening holes, but also make it easier to control the opening holes, meet the opening action in the dental model process, and prevent the upper diaphragm from being opened at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the molding die device for the bracketless invisible orthodontic appliance in Example 1 of the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the main structure of a molding die device for a bracketless invisible orthodontic appliance;

[0024] Figure 3 for Figure 1 A schematic diagram of a partial three-dimensional exploded structure of a middle-pressure die device;

[0025] Figure 4 for Figure 1 A schematic diagram of a partial three-dimensional structure of a middle die device;

[0026] Figure 5 for Figure 4 A schematic diagram of a three-dimensional cross-sectional structure of a die pressing device;

[0027] Figure 6 for Figure 1 Schematic diagram of the three-dimensional structure of the hole opener;

[0028] Figure 7 for Figure 6 A schematic diagram of a three-dimensional exploded structure of a hole opener;

[0029] Figure 8 for Figure 7 Schematic diagram of the three-dimensional cross-sectional structure of the hollow rod.

[0030] In the figure: 1. operating table; 2. shell; 21. outer cover; 3. support plate; 4. die pressing mechanism; 41. lifting assembly; 42. adsorption assembly; 421. air pump; 422. partition; 423. distributor one; 424. spring; 425. suction cup; 426. sealing ring; 427. electronic valve one; 5. heating mechanism; 6. vacuum mechanism; 61. hole opening assembly; 611. bottom plate; 612. hole opener; 6121. hollow rod; 6122. moving rod; 6123. electromagnet; 613. regulator; 6131. ​​displacement sensor; 6132. electric telescopic rod; 62. vacuum assembly; 621. distributor two; 622. electronic valve two; 101. upper diaphragm; 102. lower diaphragm; 103. dental mold. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0034] Example 1: Please refer to Figure 1-Figure 2, this embodiment provides a molding die device for a bracketless invisible orthodontic appliance, which is used to press a diaphragm on a dental mold 103, wherein the diaphragm includes an upper diaphragm 101 and a lower diaphragm 102, and the dental mold 103 is located between the upper diaphragm 101 and the lower diaphragm 102. In this embodiment, the diaphragm is made of polymer resin material, and the upper diaphragm 101 and the lower diaphragm 102 are both circular diaphragms with uniform thickness, and the radius of the upper diaphragm 101 is smaller than the radius of the lower diaphragm 102. In other embodiments, the upper diaphragm 101 can also be set as a U-shaped piece according to the general structure of the teeth, so as to reduce raw materials and reduce production costs while meeting the requirements for making invisible braces.

[0035] Please combine Figure 3-Figure 5 The die pressing device includes a shell 2, a support plate 3, a die pressing mechanism 4, a heating mechanism 5 and a vacuum pumping mechanism 6. The shell 2 is used to provide a cavity for die pressing. In the present embodiment, the shell 2 is a metal cylindrical shell 2, and a window is provided on the side of the shell 2, and an outer cover 21 is installed, so that the shell 2 can be opened from the side to place the upper diaphragm 101 and the lower diaphragm 102. A sealing strip is adhered to the edge of the outer cover 21, and when the outer cover 21 is covered on the shell 2, sealing is achieved by the sealing strip. The inner diameter of the shell 2 is slightly larger than the radius of the lower diaphragm 102.

[0036] Please combine Figure 6 The support plate 3 is fixedly connected in the cavity to carry the lower diaphragm 102. In this embodiment, the support plate 3 is annular in shape and has a plurality of parallel through grooves therein, which facilitates the opening assembly 61 to open holes in the lower diaphragm 102 while meeting the need to carry the lower diaphragm 102.

[0037] The die pressing mechanism 4 includes a lifting assembly 41 and an adsorption assembly 42, wherein the adsorption assembly 42 is used to adsorb the upper film 101. The lifting assembly 41 is used to drive the adsorption assembly 42 to move up and down so that the upper film 101 moves to fit with the die and the lower film 102.

[0038] Specifically, the adsorption component 42 includes an air pump 421, a partition 422, a distributor 423, a plurality of springs 424 and a plurality of suction cups 425, and the air pump 421 is arranged on the outside of the shell 2. The distributor 423 includes a main air pipe 1 and a plurality of branch air pipes 1. One end of the main air pipe 1 is connected to the air pump 421, and an electronic valve 427 is installed on the main air pipe 1. The other end of the main air pipe 1 is respectively connected to a plurality of branch air pipes 1. The plurality of branch air pipes 1 pass through the partition 422 and are connected to the suction cups 425 one by one. In this embodiment, the adsorption component 42 and the vacuum component 62 share an air pump 421, and electronic valves, three-way pipes, etc. are used to communicate with each other and control the direction of gas. Among them, the branch air pipe 1 in the outermost circle is located on the outside of the upper diaphragm 101, and the length of the branch air pipe 1 in the outermost circle is greater than the length of the branch air pipe 1 in the inner circle.

[0039] The partition 422 is disposed in the cavity of the housing 2. The suction cup 425 is located on the side of the upper diaphragm 101 away from the lower diaphragm 102. Each spring 424 is sleeved on the outside of an air distribution pipe, one end of the spring 424 abuts against the suction cup 425, and the other end abuts against the partition 422. In this embodiment, the air distribution pipe and the suction cup 425 can be made of a high-temperature resistant hard air pipe such as a metal or glass tube, and after the upper diaphragm 101 is heated, the shapes of the air distribution pipe and the suction cup 425 remain unchanged.

[0040] The outer ring of the partition 422 is fixedly connected with a sealing ring 426, and the sealing ring 426 is in contact with the inner wall of the shell 2. The sealing ring 426 enables the partition 422 and the shell 2 to be sealed, while keeping the partition 422 able to slide in the shell 2.

[0041] The lifting assembly 41 includes a driver and a pressure sensor. The driver is installed in the housing 2 and is used to drive the partition 422 to move up and down. The driver can be a hydraulic telescopic rod or a linear driver such as an electric cylinder. The pressure sensor is installed between the driver and the partition 422 and is used to detect the pressure change between the driver and the partition 422. When the partition 422 is driven to move downward, the reaction force of the spring 424 can reflect the pressure applied during the die pressing process.

[0042] In actual operation, first open the outer cover 21, place the lower diaphragm 102 on the support plate 3, then place the die at the center of the lower diaphragm 102, place the upper diaphragm 101 under the multiple suction cups 425, and then turn on the air pump 421, which runs at a lower power to adsorb the upper diaphragm 101 on the suction cups 425, and manually adjust the position of the upper diaphragm 101 so that the upper diaphragm 101 and the lower diaphragm 102 are opposite. After that, start the driver to push the partition 422 downward, thereby driving the distributor to move downward as a whole until the upper diaphragm 101 contacts the dental mold 103, and the air distribution pipe 1 and the corresponding spring 424 above the dental mold 103 begin to shrink, and the remaining air distribution pipes continue to move downward until the upper diaphragm 101 fits the lower diaphragm 102. During this process, the upper film 101 is first heated by the heating mechanism 5 to soften the central part of the upper film 101, and the lower film 102 is locally heated at the same time, so that the upper film 101 can not only fit on the dental mold 103, but also be bonded together with the lower film 102.

[0043] In addition, in this embodiment, the die pressing device may further include an operating table 1, and the bottom of the housing 2 is fixedly connected to the operating table 1. The lifting assembly 41 and the air pump 421 are both installed on the operating table 1. A controller may also be installed on the operating table 1 to monitor the die pressing process. For example, the controller first controls the die pressing device to perform the die pressing operation according to the preset die pressing steps, and at the same time monitors the abnormal conditions that occur during the die pressing process, and promptly issues an alarm or executes an emergency treatment plan.

[0044] The heating mechanism 5 is used to heat the upper diaphragm 101 and the lower diaphragm 102. In this embodiment, an infrared heater is used for heating, and the infrared heater can perform non-contact heating on the upper diaphragm 101 and the lower diaphragm 102, so that other components can be avoided from being heated during the heating process. At the same time, the heating range of the infrared heater is more precise, which is convenient for controlling the temperature of the upper diaphragm 101 and the lower diaphragm 102, and helps to improve the compression molding efficiency and molding effect. Of course, in other embodiments, heating can also be performed by carbon fiber heating, electric heating, etc.

[0045] The vacuum pumping mechanism 6 includes a hole opening component 61 and an air pumping component 62. The hole opening component 61 is used to open a hole on the die. The air pumping component 62 is connected to the hole opening component 61 and is used to pump air from the cavity between the upper diaphragm 101 and the lower diaphragm 102.

[0046] For details, please combine Figure 7-Figure 8 The hole opening assembly 61 includes a bottom plate 611, a plurality of hole openers 612, and a plurality of adjusters 613. The bottom plate 611 is installed in the cavity of the housing 2 and is located below the support plate 3. The bottom plate 611 can be directly fixedly connected to the housing 2, or can be fixedly connected to other driving devices installed on the operating table 1 to adjust the distance between the bottom plate 611 and the support plate 3.

[0047] A plurality of hole openers 612 are mounted on the bottom plate 611 and are slidably connected to the bottom plate 611. The plurality of hole openers 612 are divided into two groups and are respectively located on both sides of the dental mold 103. Specifically, the top of the hole opener 612 is higher than the top surface of the support plate 3, and the hole opener 612 is located in the through groove of the support plate 3, and can slide horizontally in the through groove to adjust the distance between itself and the dental mold 103, thereby opening holes in the lower membrane 102, and making the opened small holes just located on both sides of the dental mold 103.

[0048] The hole opener 612 includes a hollow rod 6121, a moving rod 6122, and an electromagnet 6123. The hollow rod 6121 is fixedly connected to the bottom plate 611. The moving rod 6122 is arranged in the hollow rod 6121 and is slidably connected to the hollow rod 6121. In this embodiment, the hollow rod 6121 includes a sliding portion, a guiding portion, and a receiving portion. The sliding portion is a hollow square plate, and the sliding portion is slidably connected to the through groove on the support plate 3. The guiding portion is a hollow cylinder, and the inner diameter of the guiding portion is the same as the outer diameter of the moving rod 6122. The top of the moving rod 6122 is a pointed tip, and two symmetrical protrusions are arranged at the bottom. The inner diameter of the receiving portion is larger than the outer diameter of the moving rod 6122, and two guide grooves are symmetrically arranged in the receiving portion, and the protrusions on the moving rod 6122 are slidably connected in the guide grooves.

[0049] The electromagnet 6123 is installed in the hollow rod 6121. In this embodiment, the moving rod 6122 is made of a magnetic material, and the electromagnet 6123 is fixedly connected to the bottom of the hollow rod 6121. When the electromagnet 6123 is energized in the forward direction, the electromagnet 6123 and the moving rod 6122 are magnetically attracted to each other, and the moving rod 6122 is accommodated in the hollow rod 6121. When the electromagnet 6123 is energized in the reverse direction, the electromagnet 6123 and the moving rod 6122 are magnetically repelled, and the tip of the moving rod 6122 is higher than the top surface of the hollow rod 6121.

[0050] The regulator 613 is installed on the base plate 611 and is used to adjust the distance between the hole opener 612 and the dental model 103. The regulator 613 includes a displacement sensor 6131 and an electric telescopic rod 6132. One end of the electric telescopic rod 6132 is fixedly connected to the base plate 611, and the other end is fixedly connected to the hole opener 612. The displacement sensor 6131 is installed on the hole opener 612 and is used to detect the distance between the hole opener 612 and the dental model 103. According to the distance detected by the displacement sensor 6131, the electric telescopic rod 6132 is controlled to drive the hole opener 612 to slide in the through groove of the support plate 3, so that the hole opener 612 is just located on both sides of the dental model 103.

[0051] The air extraction assembly 62 includes a distributor 621 and an electronic valve 622. The distributor 621 includes a main air pipe 62 and a plurality of branch air pipes 62. One end of the main air pipe 62 is connected to the air pump 421, and the other end is connected to the plurality of branch air pipes 62. The other ends of the plurality of branch air pipes 62 are connected one by one to the hollow rod 6121. The electronic valve 622 is installed on the main air pipe 62.

[0052] In actual operation, by opening the second electronic valve 622, the air pump 421 extracts the gas between the upper diaphragm 101 and the lower diaphragm 102 along the main air pipe, the second branch air pipe, and the hollow rod 6121, so as to form a vacuum between the upper diaphragm 101 and the lower diaphragm 102. Since the upper diaphragm 101 is heated and softened, the upper diaphragm 101 can be tightly attached to the dental mold 103 and then pressed into shape. After cooling, the formed upper diaphragm 101 is separated from the lower diaphragm 102, and then through cutting, polishing and other processes, an invisible braces is formed, and the internal cavity of the braces just matches the upper half of the dental mold 103.

[0053] The working principle of the die pressing device of this embodiment is as follows: first, open the outer cover 21, put the lower diaphragm 102, the dental mold 103, and the upper diaphragm 101 into the housing 2 in sequence, start the air pump 421, open the electronic valve 1 427, manually take the upper diaphragm 101 or drive the adsorption component 42 to move by the lifting component 41, and adsorb the upper diaphragm 101 under the multiple suction cups 425. In this process, the output power of the air pump 421 is small, and the friction between the upper diaphragm 101 and the suction cup 425 is relatively small. The position of the upper diaphragm 101 can be adjusted so that the upper diaphragm 101 and the lower diaphragm 102 are coaxially placed with the housing 2, and the dental mold 103 is just located at the center of the lower diaphragm 102. Then, close the housing 2 to form a closed space between the support plate 3 and the partition 422. Then, according to the three-dimensional modeling of the dental mold 103 or detecting the distance between it and the dental mold 103 through the displacement sensor 6131, the electric telescopic rod 6132 is started to adjust the position of the hole opener 612 so that the multiple hole openers 612 are just divided into two groups and are close to the two sides of the dental mold 103 respectively.

[0054] After that, the lifting assembly 41 is started to drive the partition 422 to move downward until the upper diaphragm 101 contacts the dental mold 103, and the electromagnet 6123 is reversely energized to move the moving rod 6122 upward until the top exceeds the top surface of the hollow rod 6121, and when the upper diaphragm 101 contacts the dental mold 103, the suction cup 425 at the outermost circle has abutted against the lower diaphragm 102. In this process, the heating mechanism 5 is turned on to heat the upper diaphragm 101 and the lower diaphragm 102, wherein the center of the upper diaphragm 101 is heated at the same time, and the edge of the lower diaphragm 102 in contact with the dental mold 103 is heated.

[0055] The lifting assembly 41 continues to drive the partition 422 downward. Since the area of ​​the lower diaphragm 102 directly above the hole opener 612 has been heated and softened, the hole in the lower diaphragm 102 is opened under the joint action of the hole opener 612 and the plurality of suction cups 425. Then, the electromagnet 6123 is positively energized, and the moving rod 6122 is stored in the hollow rod 6121, and the hollow rod 6121 is bonded to the lower diaphragm 102. The lifting assembly 41 continues to drive the partition 422 downward until the upper diaphragm 101 and the lower diaphragm 102 are completely attached. Since the area opposite to the upper diaphragm 101 and the lower diaphragm 102 has been heated and softened, under the pressure of the gas distribution pipe 1 and the suction cup 425, the upper diaphragm 101 and the lower diaphragm 102 are completely bonded to form a closed cavity. At this time, open the electronic valve 2 622, close the electronic valve 1 427, increase the output power of the air pump 421, and then evacuate the closed cavity, so that the upper diaphragm 101 can be completely attached to the dental mold 103, thereby realizing the compression molding of the orthodontic appliance.

[0056] The die pressing device of this embodiment, by opening a hole in the lower diaphragm 102 and performing a vacuum process along the position of the hole, realizes vacuuming of the cavity between the upper and lower diaphragms 102, avoids the appearance of bubbles when the appliance is pressed and formed, makes the formed appliance fit the dental mold 103 more closely, and improves the quality of die pressing. In addition, the die pressing device of this embodiment adjusts the position of the hole according to the shape and size of the dental mold 103, so that the position of the hole is closer to the edge of the dental mold 103, which can not only improve the vacuum forming effect, but also can be applied to more dental molds 103 of different shapes and sizes. The die pressing device of the present embodiment can also adsorb and squeeze the upper diaphragm 101 through a plurality of air distribution pipes. Under the action of the spring 424, the plurality of air distribution pipes can press down on different positions of the upper diaphragm 101, so that the upper diaphragm 101 can better fit on the dental mold 103 and the lower diaphragm 102, which not only improves the efficiency of extrusion molding, but is also suitable for dental molds 103 of more different shapes and sizes. The heating mechanism 5 performs regional remote heating on the upper diaphragm 101 and the lower diaphragm 102, and the heating control of the upper and lower diaphragms 102 is more precise. At the same time, it avoids the excessive temperature of other components in the device causing adhesion to the upper diaphragm 101, thereby improving the molding quality.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A molding device for forming a bracketless invisible orthodontic appliance, used for molding a membrane on a dental mold (103), wherein: The diaphragm comprises an upper diaphragm (101) and a lower diaphragm (102), and the dental mold (103) is located between the upper diaphragm (101) and the lower diaphragm (102); the characteristic is that the die pressing device comprises: A housing (2) for providing a cavity for compression molding; A support plate (3) fixedly connected to the cavity and used for supporting the lower diaphragm (102); The die pressing mechanism (4) comprises a lifting component (41) and an adsorption component (42), wherein the adsorption component (42) is used to adsorb the upper diaphragm (101); the lifting component (41) is used to drive the adsorption component (42) to move up and down, so that the upper diaphragm (101) moves to fit with the dental mold (103) and the lower diaphragm (102); The adsorption component (42) comprises an air pump (421), a partition (422), a distributor (423), a plurality of springs (424) and a plurality of suction cups (425); the air pump (421) is arranged on the outside of the housing (2); the distributor (423) comprises a main air pipe (421) and a plurality of branch air pipes (423); the main air pipe (421) is connected to the air pump (421), and an electronic valve (427) is installed on the main air pipe (427); the plurality of branch air pipes (423) respectively pass through the partition (422) and are connected one by one to the suction cups (425); The partition (422) is arranged in the cavity of the shell (2); the suction cup (425) is located on a side of the upper diaphragm (101) away from the lower diaphragm (102); each of the springs (424) is sleeved on the outside of one of the air distribution pipes (1), one end of the spring (424) abuts against the suction cup (425), and the other end abuts against the partition (422); wherein the air distribution pipe (1) in the outermost circle is located on the outside of the upper diaphragm (101), and the length of the air distribution pipe (1) in the outermost circle is greater than the length of the air distribution pipe (1) in the inner circle; The lifting assembly (41) comprises a driver and a pressure sensor; the driver is installed in the housing (2) and is used to drive the partition (422) to move up and down; the pressure sensor is installed between the driver and the partition (422); A heating mechanism (5) for heating the upper diaphragm (101) and the lower diaphragm (102); A vacuum pumping mechanism (6) comprising a hole opening component (61) and an air extraction component (62), wherein the hole opening component (61) is used to open a hole on the lower diaphragm (102); the air extraction component (62) is connected to the hole opening component (61) and is used to extract air from the cavity between the upper diaphragm (101) and the lower diaphragm (102); The hole opening assembly (61) comprises a base plate (611), a plurality of hole openers (612), and a plurality of adjusters (613); the base plate (611) is installed in the cavity of the housing (2) and is located below the support plate (3); the plurality of hole openers (612) are installed on the base plate (611) and are slidably connected to the base plate (611), and the plurality of hole openers (612) are divided into two groups and are respectively located on two sides of the dental model (103); the adjuster (613) is installed on the base plate (611) and is used to adjust the distance between the hole opener (612) and the dental model (103); The hole opener (612) comprises a hollow rod (6121), a movable rod (6122), and an electromagnet (6123); the hollow rod (6121) is fixedly connected to the bottom plate (611); the movable rod (6122) is arranged inside the hollow rod (6121) and is slidably connected to the hollow rod (6121); the electromagnet (6123) is installed inside the hollow rod (6121); The regulator (613) comprises a displacement sensor (6131) and an electric telescopic rod (6132); one end of the electric telescopic rod (6132) is fixedly connected to the base plate (611), and the other end is fixedly connected to the hole opener (612); the displacement sensor (6131) is mounted on the hole opener (612) and is used to detect the distance between the hole opener (612) and the dental model (103).

2. A molding die device for a bracketless invisible orthodontic appliance according to claim 1, characterized in that: The outer ring of the partition (422) is fixedly connected to a sealing ring (426), and the sealing ring (426) is in contact with the inner wall of the outer shell (2).

3. A molding die device for a bracketless invisible orthodontic appliance according to claim 1, characterized in that: The air extraction component (62) comprises an air pump (421), a second distributor (621), and a second electronic valve (622); the second distributor (621) comprises a second main air pipe and a plurality of second branch air pipes; the second main air pipe is connected to the air pump (421); the plurality of second branch air pipes are respectively connected one by one to the hollow rod (6121); the second electronic valve (622) is mounted on the second main air pipe.

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