CN114953279B

CN114953279B - Dental model hardening method

Info

Publication number: CN114953279B
Application number: CN202210839587.XA
Authority: CN
Inventors: 王兵; 王建强; 戴杰; 孙凯; 张青; 李华; 陈诚
Original assignee: Jiangsu New Team Intelligent Equipment Co ltd
Current assignee: Jiangsu New Team Intelligent Equipment Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-10-28
Anticipated expiration: 2042-07-18
Also published as: CN114953279A

Abstract

The invention discloses a dental model hardening method, which comprises the following steps: s1, completely immersing a dental model to be hardened into a water body in a water pool, and carrying out UV hardening on the dental model to be hardened in the water body for a period of time through an ultraviolet lamp to obtain a primary hardening dental model; s2, taking the primary hardened dental model out of the water body, and carrying out UV hardening on the primary hardened dental model for a period of time through an ultraviolet lamp to obtain a final hardened dental model. The invention firstly immerses the dental model to be hardened into the water body for water light hardening, the water body with lower temperature is beneficial to cooling and hardening the resin, simultaneously, the problem of poor products caused by overhigh environment temperature when the UV hardening is directly carried out in the air environment can be effectively avoided, the product quality is beneficial to improving, simultaneously, the product is independently hardened after the water light hardening is carried out to a certain degree so as to reduce the poor products, and compared with the water light hardening which is always carried out in the water body, the invention can effectively improve the hardening efficiency and realize the organic combination of the hardening efficiency and the hardening quality.

Description

Method for hardening dental cast

Technical Field

The invention relates to the field of digital intelligent manufacturing, in particular to a dental model hardening method.

Background

Resin dental casts are common parts used in dental plastic. When a resin dental cast is processed, the resin dental cast after injection molding needs to be hardened by ultraviolet light irradiation.

The conventional hardening process is to directly expose the resin dental model in the air for ultraviolet irradiation, and because the ultraviolet lamp can generate heat during working, the ambient temperature is relatively high during hardening, so that when the ultraviolet irradiation is directly performed on the resin dental model to be hardened in the air, the problem that the resin dental model obtained through final hardening has certain defects can be solved.

Disclosure of Invention

The present invention is directed to solving the above problems of the prior art and to providing a method for hardening a dental cast.

The purpose of the invention is realized by the following technical scheme:

a method of hardening a dental model comprising the steps of:

s1, completely immersing the tooth model to be hardened in a water body in a water pool, and carrying out UV hardening on the tooth model to be hardened in the water body for a period of time through an ultraviolet lamp to obtain a primary hardening tooth model;

s2, taking the primary hardened dental model out of the water body, and carrying out UV hardening on the primary hardened dental model for a period of time through an ultraviolet lamp to obtain a final hardened dental model.

Preferably, the water pool comprises a light-transmitting bottom plate, and in the step S1, the dental model to be hardened in the water pool is subjected to UV hardening through a first ultraviolet lamp arranged below the bottom plate.

Preferably, first ultraviolet lamp is ultraviolet LED lamp plate, ultraviolet LED lamp plate sets up on the cooling plate when carrying out the UV sclerosis in S1, through to continuously carry cooling medium in the cooling runner of cooling plate in order to be right ultraviolet LED lamp plate cools off.

Preferably, in S1, the dental cast to be hardened is clamped between a first clamping portion and a second clamping portion of the fixture, the first clamping portion and/or the second clamping portion is/are a net frame, the net frame includes a frame and a wire mesh located in a middle area of the frame, and the dental cast to be hardened is clamped at the wire mesh; the clamp is connected with a lifting assembly, and the lifting assembly can drive the first clamping part and the second clamping part to move into a water body in the water pool from the upper part of the water pool.

Preferably, in the S1, the dental model to be hardened in the water tank is UV-hardened by a second ultraviolet lamp located above the water tank.

Preferably, the second ultraviolet lamp is arranged on the heightening component, and the heightening component enables the second ultraviolet lamp to move between a height far away from the top of the water pool and a height close to the top of the water pool.

Preferably, in S2, the once-hardened dental cast is placed on a support net inside a hardening box and UV-hardened by a third ultraviolet lamp disposed above and/or below the support net.

Preferably, in the step S1, the dental model to be hardened is moved to a clamp located above the water pool by a loading and unloading robot, and then the dental model to be hardened on the clamp is moved to the water body by a lifting assembly;

and in the step S2, the primary hardening dental model on the clamp above the water pool is moved to the supporting net through the feeding and discharging robot.

Preferably, in S2, after the primary hardening dental model is taken out of the water body, the water on the primary hardening dental model is removed, and then the primary hardening dental model is UV-hardened for a period of time by an ultraviolet lamp to obtain a final hardening dental model.

Preferably, in S2, water on the primary hardened dental cast may be removed by spin-drying or blow-drying.

The technical scheme of the invention has the advantages that:

the invention firstly immerses the dental model to be hardened into the water body for water light hardening, the water body with lower temperature is beneficial to cooling and hardening the resin, simultaneously, the problem of poor products caused by overhigh environment temperature when the UV hardening is directly carried out in the air environment can be effectively avoided, the product quality is beneficial to improving, simultaneously, the product is independently hardened after the water light hardening is carried out to a certain degree so as to reduce the poor products, and compared with the water light hardening which is always carried out in the water body, the invention can effectively improve the hardening efficiency and realize the organic combination of the hardening efficiency and the hardening quality.

The water tank is provided with the light-transmitting bottom plate, so that the ultraviolet lamp can be arranged below the bottom plate to harden the dental cast from below the dental cast, and meanwhile, the ultraviolet lamp can be arranged above the water tank to harden from above the dental cast, thereby effectively realizing the simultaneous hardening of two surfaces of the dental cast, improving the hardening efficiency and being beneficial to ensuring the product quality.

The first ultraviolet lamp provided by the invention uses the ultraviolet LED lamp panel and is arranged on the cooling plate, and when the ultraviolet LED lamp panel is hardened, the cooling plate is used for cooling the ultraviolet LED lamp panel, so that the interference of heat generated during the work of the ultraviolet LED lamp panel on the environment temperature and the water body temperature is effectively avoided.

The invention can simultaneously carry out independent light hardening on other once-hardened tooth molds subjected to water light hardening when a batch of tooth molds are subjected to water light hardening, is favorable for improving the efficiency, and can ensure that the upper surface and the lower surface of the tooth molds are fully exposed in ultraviolet light to be synchronously hardened by the independent light hardening positioned on the supporting net, thereby improving the hardening efficiency.

The two-step hardening process is automatically realized by matching the feeding and discharging robot, the clamp, the lifting assembly and the heightening assembly, manual operation is not needed, the automation degree is high, the damage of ultraviolet light to operators can be effectively avoided, and the two-step hardening process is safe and reliable.

The invention adds a dewatering process between two hardening processes, can avoid the influence of the moisture on the primary hardening dental model on the secondary hardening, and is beneficial to improving the hardening speed and ensuring the hardening effect.

Drawings

FIG. 1 is a schematic flow diagram of the present invention;

FIG. 2 is a cross-sectional view of the apparatus used in the method of the present invention to harden a dental cast from below, with the fixture in place within the basin;

FIG. 3 is a partial cross-sectional view of the apparatus used in the method of the present invention to simultaneously cure the cast from above and below the cast to be cured, with a second ultraviolet lamp at a height away from the top of the basin in which the fixture is located;

FIG. 4 is an isometric view of a jig used in the method of the present invention;

fig. 5 is a rear perspective view of a clamp used in the method of the present invention, with the second clamping portion and the connecting arm in a separated state:

FIG. 6 is an enlarged view of area B of FIG. 4;

FIG. 7 is an enlarged view of area A of FIG. 3;

FIG. 8 is a flow chart of the present invention for dental cast hardening using an automated process;

FIG. 9 is a front perspective view of the lift assembly and elevation assembly used in the method of the present invention;

FIG. 10 is a rear perspective view of the lift assembly and height adjustment assembly used in the method of the present invention;

FIG. 11 is a cross-sectional view of the curing apparatus used in the method of the present invention, with the water bath, first ultraviolet lamp, etc., hidden;

FIG. 12 is a rear perspective view of a curing apparatus used in the method of the present invention, with the water basin, first ultraviolet lamp, etc., hidden;

FIG. 13 is a front perspective view of a curing apparatus used in the method of the present invention, with the water basin, first ultraviolet lamp, etc., hidden;

fig. 14 is a perspective view of a securing mechanism used in the method of the present invention.

Detailed Description

Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are merely exemplary embodiments applying the technical solutions of the present invention, and all technical solutions formed by adopting equivalents or equivalent changes fall within the scope of the claims of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, the direction toward the operator is a proximal end, and the direction away from the operator is a distal end, with reference to the operator.

Example 1

The method for hardening a dental cast according to the present invention is illustrated in the following description with reference to the accompanying drawings, as shown in fig. 1, which includes the following steps:

s1, completely immersing the dental model to be hardened in a water body in a water pool 1, and carrying out UV hardening on the dental model to be hardened in the water body for a period of time through an ultraviolet lamp to obtain a primary hardening dental model;

s2, taking the primary hardening dental model out of the water body, and carrying out UV hardening on the primary hardening dental model for a period of time through an ultraviolet lamp to obtain a final hardening dental model. The time of the two UV hardening can be designed according to the need, and is not limited herein.

In S1, the water body is pure water at normal temperature, and the dental cast to be hardened is usually immersed in the water body in a lying state, and at this time, the dental cast to be hardened may be UV-hardened separately from above the dental cast to be hardened, or may be UV-hardened separately from below the dental cast to be hardened; most preferably, the dental cast to be hardened is UV hardened from above and below the dental cast simultaneously.

As shown in fig. 2, when UV curing is performed on the dental cast to be cured from the lower part of the dental cast to be cured, the bottom of the water pool 1 needs to be transparent, and correspondingly, the water pool 1 includes a transparent bottom plate 11, where the bottom plate 11 may be a square or circular transparent glass or a transparent hard plastic plate, and the transparent hard plastic plate may be a transparent acrylic plate, and the like. The pool 1 is connected on the base through the support legs at the bottom of the pool, a first ultraviolet lamp 2 is arranged below the bottom plate 11, and the first ultraviolet lamp 2 can be one or more ultraviolet lamp tubes. More preferably, first ultraviolet lamp 2 is ultraviolet LED lamp plate, LED lamp pearl orientation on the ultraviolet LED lamp plate bottom plate 11 in pond 1, promptly up.

As shown in the attached drawing 2, because first ultraviolet lamp 2 during operation can produce the heat to lead to pond self, the water in the pond and the temperature rise around the pond, consequently, first ultraviolet lamp 2 sets up on cooling plate 3 in S1, when carrying out the UV sclerosis, through to continuously carry cooling medium in the cooling runner of cooling plate 3 in order to right first ultraviolet lamp 2 cools off, thereby reduces the temperature influence of ultraviolet LED lamp plate during operation. The cooling plate 3 is, for example, a water cooling plate, and correspondingly, the cooling medium is cooling water and is cooled by a water cooling method. The specific structure of supplying the cooling medium is known in the art and will not be described in detail herein.

As shown in fig. 3, when UV curing is performed on the dental cast from above, a second UV lamp 7 is provided above the water reservoir 1, and the second UV lamp 7 may also be one or more UV lamp tubes. More preferably, second ultraviolet lamp 7 is ultraviolet LED lamp plate equally, LED lamp pearl orientation on the ultraviolet LED lamp plate pond 1, promptly down.

The position of the second uv lamp 7 may be fixed, and in this case, the second uv lamp 7 may also be connected to a cooling plate. At this time, of course, the second ultraviolet lamp 7 needs to be located at a certain height above the water pool 1 so as to facilitate loading and unloading.

As shown in fig. 3, the second ultraviolet lamp 7 is disposed on the height-adjusting assembly 6, and the height-adjusting assembly 6 enables the second ultraviolet lamp 7 to move between a height far away from the top of the water tank and a height close to the top of the water tank, and the specific values of the height far away from the top of the water tank and the height close to the top of the water tank can be designed according to needs, which is not limited herein. Work as when the second ultraviolet lamp 7 is in the height of keeping away from the pond top, can conveniently go on unloading, simultaneously, because the second ultraviolet lamp 7 is far away from pond 1, the influence of sclerosis dental cast is treated to the heat that can avoid the continuous during operation of second ultraviolet lamp 7, this moment, the second ultraviolet lamp 7 can need not to connect on the cooling plate. When the second ultraviolet lamp 7 is at a height close to the top of the water pool 1, the dental cast to be hardened in the water body can be effectively hardened.

In practice, the cast to be hardened can be directly sunk at the bottom of the basin 1, but in this way, the obtained single-hardening cast is not easy to be taken out from the basin 1 quickly and is not easy to be taken out by automatic equipment.

As shown in fig. 2 and 3, in S1, the dental cast to be hardened is clamped between the first clamping portion 41 and the second clamping portion 42 of the fixture 4, the first clamping portion 41 and/or the second clamping portion 42 is a net frame, the net frame comprises a frame and a wire mesh located in a middle area of the frame, and the dental cast to be hardened is clamped at the wire mesh; the clamp 4 is connected with a lifting assembly 5, and the lifting assembly 5 can drive the first clamping part 41 and the second clamping part 42 to move from the upper part of the water pool 1 to the water body in the water pool 1.

The treatment mode can conveniently put the tooth molds to be hardened into the water pool 1 in batches and quickly and automatically take out the once hardened tooth molds from the water body, and the efficiency is higher. Of course, when the dental cast to be hardened is placed on the fixture 4 and the primary hardening dental cast is taken off from the fixture 4, the operation can be performed manually or by a feeding and discharging robot.

As shown in fig. 2, 4-6, the fixture 4 specifically includes a vertical mounting plate 44, the vertical mounting plate 44 is connected to the second clamping portion 42 through two connecting arms 45, the first clamping portion 41 is connected to a clamping driving mechanism 43 disposed on the vertical mounting plate 44, and the clamping driving mechanism 43 drives the first clamping portion 41 to move relative to the second clamping portion 42 to open and close the fixture 4.

Because during the centre gripping, need avoid as far as possible first clamping part 41 and second clamping part 42 are right treat that sclerosis dental cast produces sheltering from, in order to satisfy the needs of two-sided synchronous sclerosis simultaneously, first clamping part 41 and second clamping part 42 all adopt the rack.

As shown in fig. 4 to 6, the second clamping portion 42 includes a rectangular second frame, a row of upper threading posts 423 are respectively formed on a first front rod 421 and a first rear rod 422 of the second frame, the upper threading posts 423 on the first front rod 421 and the first rear rod 422 are in one-to-one correspondence, two upper threading posts 423 that are opposite in position are provided with a carrying line 424 on the top of the upper threading posts, the carrying line 424 is perpendicular to the first front rod 421 and the first rear rod 422, and a group of the carrying lines 424 forms the silk screen. Meanwhile, the upper ends of the upper threading columns 423 are provided with threading holes (not shown in the figure) for the carrier threads to pass through, each carrier thread passes through the threading holes of the two upper threading columns 423 at opposite positions, and two ends of the carrier thread can be knotted and then are limited at the outer ends of the threading holes.

As shown in fig. 4 to 6, the first clamping portion 41 includes a rectangular first frame, four side bars of the first frame are located outside four side bars of the second frame, meanwhile, a second front bar 411 of the first frame is provided with lower threading posts 413 corresponding to the upper threading posts 423 on the first front bar 421 one by one, lower ends of the lower threading posts 413 are formed with threading holes 415 for passing a lower pressing line 414, a second rear bar 412 of the first frame is formed with routing holes (not shown) corresponding to the threading holes 415 one by one, the lower pressing line 414 passes through a pair of facing threading holes 415 and routing holes, and two ends of the lower pressing line 414 can be tied and then defined at outer ends of the threading holes 415 and routing holes, the lower pressing line 414 corresponds to and is parallel to the carrying line 424, and a group of the lower pressing lines 414 forms a screen of the first clamping portion.

As shown in fig. 4, the clamping driving mechanism 43 includes a clamping driving cylinder 431 fixed on the vertical mounting plate 44, the clamping driving cylinder is located above the first clamping portion 41, the clamping driving cylinder 431 is connected with a sliding frame 432, the sliding frame 432 is slidably disposed on a guide rail 433 on the vertical mounting plate 44 up and down, the sliding frame 432 is connected with the top of the first frame through frame connecting plates 434 at the left and right sides, such that in operation, the clamp 4 is immersed into the water body only by the first clamping portion 41 and the second clamping portion 42, and the clamping driving cylinder 431 and the like can be protected. When the cylinder shaft of the clamping driving cylinder 431 retracts, the first clamping part and the second clamping part keep the maximum distance, at the moment, the clamp is in an open state, and a dental model to be hardened can be placed on the bearing line 424; when the cylinder shaft of the clamping driving cylinder 431 extends, the first clamping part moves towards the second clamping part and the lower pressing line on the first clamping part is pressed on the top of the dental cast to be hardened.

As shown in fig. 7, in S2, the primary hardened dental cast is placed on the support net 82 in the hardening box 8, and a third ultraviolet lamp 83 for UV hardening the primary hardened dental cast on the support net 82 is provided in the hardening box 8. The hardening box 8 includes a box body 81, an opening is disposed on one side of the box body 81 for facilitating the entrance and exit of the dental cast, the supporting net 82 is disposed in the inner cavity of the box body 81, and the specific structure of the supporting net 82 is equivalent to that of the second clamping portion 42, which is not described herein again. A third ultraviolet lamp 83 located above and/or below the supporting net 82 is arranged in the box body 81, and the third ultraviolet lamp 83 is preferably an ultraviolet LED lamp plate.

In one embodiment, the hardening tank 8 can be arranged in a fixed position next to the basin 1, and the hardening can be performed by manually removing the once-hardened dental cast from the basin 1 or from the fixture 4 and placing it in the hardening tank 8.

However, ultraviolet light generated during UV curing can cause certain damage to human bodies, so that the whole curing process and the automatic realization of the feeding and discharging process are ideal.

As shown in fig. 8, in S1, the dental model to be hardened in the feeding area is moved to the clamp 4 above the water pool 1 by a loading and unloading robot (not shown), and then the lifting assembly 5 drives the clamp 4 to move down until the dental model to be hardened clamped thereon is completely immersed in the water pool 1 for hardening. Then, the height-adjusting component drives the first ultraviolet lamp to descend to a height close to the top of the water pool. The first and second UV lamps are then activated for UV curing.

In S2, after the UV curing is completed in S1, the lifting assembly drives the fixture to move up to the top of the water pool, then the first clamping portion of the fixture moves up, when the lifting assembly 5 drives the fixture 4 holding the primary cured dental cast to move up to the top of the water pool 1 and the fixture 4 is opened, the feeding and discharging robot moves the primary cured dental cast in the fixture 4 to the supporting net 82, and then the third ultraviolet lamp is started to perform the UV curing again. Go up unloading robot can include automatic clamping jaw and drive its six robots and four-axis robot that move, and its specific structure is known technique, and no longer gives details here, and go up unloading robot can cooperate visual detection equipment to go on unloading.

As shown in fig. 9, the second ultraviolet lamp 7 may be disposed at the bottom of the hardening box 8, the hardening box 8 is connected to the height-adjusting assembly 6 and driven by the height-adjusting assembly 6 to ascend and descend, after the loading and unloading robot grabs the primary hardened dental cast from the fixture 4, the fixture 4 moves down, then the hardening box 8 moves down to the height of the fixture 4 during loading and unloading, and finally the loading and unloading robot places the primary hardened dental cast grabbed by the loading and unloading robot into the supporting net 82. By the structure, the feeding and discharging robot can be operated at a height, and the control difficulty of the feeding and discharging robot is reduced.

As shown in fig. 9 and 10, the lifting assembly 5 and the height-adjusting assembly 6 may be any of various known structures capable of generating linear movement, for example, the lifting assembly 5 includes an air cylinder, the air cylinder may be connected to a sliding plate and drive the sliding plate to slide up and down along a longitudinal rail, and the clamp 4 is disposed on the sliding plate. And the height-adjusting assembly 6 may be a cylinder directly connected to the second uv lamp 7 or the curing box 8.

As shown in fig. 9, 10 and 11, the lifting assembly 5 and the height-adjusting assembly 6 share a set of guide mechanism, the guide mechanism includes a vertically-arranged base plate a, and two longitudinal guide rails b perpendicular to the horizontal plane are arranged on the vertically-arranged base plate a at intervals. The lifting assembly 5 comprises a lifting driving motor 51 fixed on the longitudinal base plate a and close to one side of the longitudinal base plate a, the lifting driving motor 51 is connected with and drives a driving wheel 52 positioned at the upper end of the longitudinal base plate a to rotate, a rotating shaft where the driving wheel 52 is positioned is arranged on the longitudinal base plate a in a self-rotating manner through a bearing, a driven wheel 53 opposite to the driving wheel 52 is further arranged at the lower end of the longitudinal base plate a, a conveying belt 54 is sleeved on the driving wheel 52 and the driven wheel 53, the conveying belt 54 is connected with a sliding vertical plate 55 through a connecting piece, and the sliding vertical plate 55 is arranged on two longitudinal guide rails b in a sliding manner and is connected with the side plate 44 of the clamp 4.

As shown in fig. 9 and 10, the height adjusting assembly 6 includes a height adjusting driving motor 61 fixed on the longitudinal base plate a and close to the other side of the longitudinal base plate a, the height adjusting driving motor 61 is connected to and drives an upper roller 62 located at the upper end of the longitudinal base plate a to rotate, a rotating shaft of the upper roller 62 is rotatably disposed on the longitudinal base plate a through a bearing, a lower roller 63 facing the upper roller 62 is disposed at the lower end of the longitudinal base plate a, a transmission belt 64 is sleeved on the upper roller 62 and the lower roller 63, the transmission belt 64 is connected to a sliding bracket 65 through a connecting member, and the sliding bracket 65 is slidably disposed on the two longitudinal guide rails b and connected to the top of the second ultraviolet lamp 7.

Since the surface of the once-hardened cast taken out of the water body may be stained with a certain amount of water, which may affect the UV hardening efficiency and effect in S2, after the once-hardened cast is taken out of the water body, the water on the once-hardened cast is removed first, and then the once-hardened cast is UV-hardened for a certain period of time by the ultraviolet lamp to obtain the final hardened cast.

When the water on the dental cast is removed, the dental cast can be dried in an air-drying mode, and the water removal efficiency is low. Therefore, preferably, the water on the primary hardened dental model can be removed by spin-drying or blow-drying.

When the drying mode is adopted, the once hardening dental model on the clamp 4 can be blown by a blowing device, a fan and the like to dry water, and meanwhile, when the whole hardening process is carried out in a closed case, the case can be provided with a certain air exhaust structure so that moist air in the case can be exhausted out of the case to reduce the influence of humidity on UV hardening. Of course, the primary hardened cast may be removed from the fixture 4 and then placed in a fixed position for drying.

When the drying way is adopted, the primary hardened dental cast can be dried in a separate drying machine after being taken out from the water body or after being taken out from the clamp 4.

Preferably, the fixture 4 is connected with a fixture rotating mechanism 9 capable of driving the fixture 4 to rotate, so that the once-hardened dental model is directly dried on the fixture 4 after the fixture 4 removes the once-hardened dental model from the water body.

In a feasible structure, the fixture rotating mechanism 9 includes a rotating shaft 92, one end of the rotating shaft 92 is connected to the outer side of the vertical mounting plate of the fixture 4, the rotating shaft 92 is rotatably disposed on the sliding vertical plate 55 of the lifting assembly 5, meanwhile, the rotating shaft 92 is connected to a rotary driving mechanism 91 for driving the rotating shaft 92 to rotate, the rotary driving mechanism is disposed on the sliding vertical plate 55, and when the hardening dental cast needs to be spin-dried once, the rotary driving mechanism drives the rotating shaft to rotate, so as to drive the fixture 4 to rotate around the axis of the rotating shaft, and further, the hardening dental cast clamped on the fixture 4 is spin-dried once.

In practice, in order to facilitate loading and unloading, a plurality of tooth molds to be hardened are placed on a transparent carrier, and then the carrier with the tooth molds to be hardened is clamped between the first clamping portion 41 and the second clamping portion 42.

As shown in fig. 11 and 12, the rotating shaft 92 may be rotatably disposed in a center hole 913 of a servo hollow rotary table 911, the servo hollow rotary table 911 is fixed on a side of the sliding vertical plate 55 facing away from the clamp 4 through a fixing seat 912, and the rotating shaft 92 may be disposed in an inner ring of a bearing disposed on the fixing seat 912 and/or in the center hole 913 of the servo hollow rotary table 911. In such a structure, when the servo hollow turntable 911 is operated, the rotation shaft 92 is not driven to rotate.

As shown in fig. 11, 13, and 14, the servo hollow turntable 911 is connected to a fixing mechanism 93 and drives the fixing mechanism 93 to rotate around the axis of the rotating shaft 92, the fixing mechanism 93 includes a vertical plate 931 vertically penetrated by the rotating shaft 92, the rotating shaft 92 is connected to the vertical plate 931 through a bearing, the vertical plate 931 is provided with a fixing driving component 932, and a pressing component 933 and a supporting component 934 driven by the fixing driving component 932 to switch between an open state and a closed state, when the pressing component 933 and the supporting component 934 are distributed above and below the fixture and in the closed state, the pressing component 933 and/or the supporting component 934 is connected to the rotating shaft 92 and the pressing component 933 and the supporting component 934 fix the dental cast on the fixture 4, and at this time, when the fixing mechanism 93 is driven by the servo hollow turntable 911 to rotate forward and backward, the rotating shaft 92 can be driven to rotate forward and backward synchronously.

As shown in fig. 14, the fixed driving assembly 932 includes two fixed driving cylinders 935 fixed on the vertical plate 931, and of course, the fixed driving cylinders 935 may be replaced by a servo linear module or a linear motor. Two fixed actuating cylinder 935 is preferably the slip table cylinder, and the slip table of one slip table cylinder passes through first keysets 936 and connects the pressure component 933, and the slip table of another slip table cylinder passes through second keysets 937 and connects support assembly 934. When the two sliding tables move back to the farthest distance, the pressing assembly 933 and the supporting assembly 934 are in an open state, and at the moment, the pressing assembly 933 and the supporting assembly 934 can rotate around the clamp above the water pool; when the two sliding tables move towards each other, the pressing assembly 933 and the supporting assembly 934 are switched from an open state to a closed state.

As shown in fig. 14, the pressing assembly 933 includes a mounting plate 938, the mounting plate 938 is connected to the first connecting plate 936 through a first connecting bracket 939, a plurality of rows and a plurality of columns of pressing blocks 940 are arranged on the mounting plate 938, and the pressing blocks 940 may be made of rubber or silica gel.

As shown in fig. 14, the supporting member 934 includes a plate 941, a plurality of through holes are formed on the plate 941, and the plate 941 is connected to a second adaptor plate 937 by a second connecting frame 942.

As shown in fig. 14, the first connecting frame 939 and the second connecting frame 942 are respectively slidably disposed on the sliding rail 944 disposed on the vertical plate 931 through a sliding block, so that the stability of the movement of the pressing component 933 and the supporting component 934 can be effectively ensured.

As shown in fig. 11 and 14, an insertion port 921 with an upward slot is formed on the rotating shaft 92, a bolt 943 matching with the insertion port 921 is arranged on the downward-pressing component 933, and the bolt 943 is arranged on the connecting plate of the first connecting bracket 939 and is located at a side of the connecting plate facing the rotating shaft 92. When servo cavity revolving stage 911 drive fixed establishment rotates extremely down the pressure subassembly 933 is located the top of pivot 92 just when the mounting panel 938 of pressure subassembly 933 is parallel with the horizontal plane, bolt 943 with interface 921 is just right, works as what pressure subassembly 933 connected the slip table cylinder drive pressure subassembly 933 to when the pivot 92 direction removed, bolt 943 can insert in interface 921, thereby pressure subassembly 933 with the pivot 92 is connected.

Since the shaft 92 and the pin 943 are detachably connected, when the shaft 92 is separated from the pin 943, the shaft 92 may rotate due to the force applied to the first end thereof, which may cause the clamp 4 to deflect, which may affect the implementation of the automatic feeding and the effect of the UV curing.

As shown in fig. 12, an anti-rotation mechanism 10 is disposed at a second end of the rotating shaft 92, the anti-rotation mechanism 10 includes an anti-rotation driving cylinder 101 and an anti-rotation block 102 driven by the anti-rotation driving cylinder 101, and when the anti-rotation block 102 is connected to the rotating shaft 92, the rotating shaft 92 is prohibited from rotating. Specifically, a U-shaped notch with an opening facing the rotating shaft 92 is formed on the rotation preventing block 102, and a plane corresponding to two opposite inner side walls of the U-shaped notch is formed on the circumferential surface of the rotating shaft 92. When the cylinder shaft of the anti-rotation driving cylinder extends out, the anti-rotation block 102 is clamped with the rotating shaft 92, and at the moment, two planes of the rotating shaft 92 are attached to or close to two inner side walls of the U-shaped notch so as to be limited to rotate. When the cylinder shaft of the rotation prevention driving cylinder 101 is retracted, the rotation prevention block 102 moves to the outside of the rotation shaft 92, so that the rotation shaft 92 can be rotated. When the rotating shaft does not need to rotate, the rotation preventing mechanism 10 is connected with the rotating shaft 92. When the rotating shaft needs to rotate, the rotation preventing mechanism 10 is separated from the rotating shaft.

Therefore, when the spinning is not required, as shown in fig. 13, the pressing members and the supporting members of the fixing mechanism are kept open and positioned at the left and right sides of the water tub 1, so that interference with movement of other structures can be avoided.

When the spinning is needed, after the lifting component 5 moves the clamp 4 holding the primary hardening dental model to the upper part of the water pool 1, the servo hollow rotary table 911 drives the fixing mechanism to rotate 90 degrees until the pressing component and the supporting component are positioned above and below the clamp 4. Then, the fixing driving assembly 932 drives the pressing assembly and the supporting assembly to move towards each other and close, and clamps and fixes the primary hardened dental cast on the fixture, and meanwhile, the inserting pin 943 is inserted into the inserting port. Subsequently, the servo hollow rotary table 911 drives the fixing mechanism to rotate in a single direction or in a forward and reverse direction, so that the rotary shaft rotates along with the fixing mechanism, and the fixture is driven to rotate to spin-dry the hardened tooth mold once.

After the spin-drying, servo hollow rotary table 911 stops, so that the rotating shaft stops rotating, the rotation preventing mechanism is connected with the rotating shaft, the fixed driving component 932 enables the pressing component and the supporting component to move back to the outside and open, at the moment, the bolt 943 withdraws from the plug hole, and then the servo hollow rotary table 911 drives the fixed mechanism to rotate reversely by 90 degrees and reset.

The invention is capable of embodiments and other arrangements, which may be devised with or without departing from the spirit and scope of the present invention.

Claims

1. A method of hardening a dental model, characterized by: the method comprises the following steps:

s1, placing a dental model to be hardened on a clamp, driving the clamp to move downwards through a lifting assembly so as to enable the dental model to be hardened on the clamp to be completely immersed in a water body in a water pool, and carrying out UV hardening on the dental model to be hardened in the water body for a period of time through an ultraviolet lamp to obtain a primary hardened dental model;

s2, driving the clamp to move upwards through the lifting assembly so that the primary hardening dental model on the clamp is taken out of the water body, driving the clamp to swing in a reciprocating mode through the clamp rotating mechanism so as to spin-dry the primary hardening dental model on the clamp, and performing UV hardening on the primary hardening dental model for a period of time through an ultraviolet lamp to obtain a final hardening dental model;

the clamp rotating mechanism comprises a rotary driving mechanism connected with the lifting assembly and a rotating shaft driven by the lifting assembly to rotate, and the rotating shaft is connected with the clamp; the rotary driving mechanism comprises a servo hollow rotary table, and the rotating shaft is coaxially and rotatably arranged in a central hole of the servo hollow rotary table; the servo hollow rotary table is connected with a fixing mechanism and drives the fixing mechanism to rotate around the axis of the rotating shaft, the fixing mechanism comprises a vertical plate vertically penetrated by the rotating shaft, and a fixing driving assembly, a pressing assembly and a supporting assembly are arranged on the vertical plate and driven by the fixing driving assembly to switch between an opening state and a closing state; when the pressing component and the supporting component are in an opening state, the pressing component and the supporting component can rotate around the clamp above the water pool; when the pressing component and the supporting component are distributed above and below the clamp above the water pool and are in a closed state, the pressing component and/or the supporting component are connected with the rotating shaft and clamp and fix the dental model on the clamp.

2. The dental model hardening method according to claim 1, wherein: the water pool comprises a light-transmitting bottom plate, and in the S1 step, the tooth model to be hardened in the water pool is subjected to UV hardening through a first ultraviolet lamp arranged below the bottom plate.

3. The dental cast hardening method according to claim 2, wherein: first ultraviolet lamp is ultraviolet ray LED lamp plate, ultraviolet ray LED lamp plate sets up on the cooling plate when carrying out the UV sclerosis in S1, through to continuously carry coolant in the cooling runner of cooling plate with right ultraviolet ray LED lamp plate cools off.

4. The method of hardening a dental model according to claim 1, wherein: in the step S1, the dental model to be hardened is clamped between a first clamping portion and a second clamping portion of a fixture, the first clamping portion and/or the second clamping portion is/are a net frame, the net frame comprises a frame and a silk screen located in a middle area of the frame, and the dental model to be hardened is clamped at the silk screen; the clamp is connected with a lifting assembly, and the lifting assembly can drive the first clamping part and the second clamping part to move into a water body in the water pool from the upper part of the water pool.

5. The method of hardening a dental model according to claim 1, wherein: in the S1, UV curing is carried out on the dental model to be cured in the water pool through a second ultraviolet lamp positioned above the water pool; the second ultraviolet lamp sets up on heightening the subassembly, heightening the subassembly and making the second ultraviolet lamp remove between the height of keeping away from the pond top and the height that is close to the pond top.

6. The dental model hardening method according to claim 1, wherein: in S2, the once-hardened dental cast is placed on a support net inside a hardening box and UV-hardened by a third UV lamp disposed above and/or below the support net.

7. The dental cast hardening method according to claim 6, wherein:

in the S1, the tooth mould to be hardened is moved to a clamp above a water pool through a feeding and discharging robot, and then the tooth mould to be hardened on the clamp is moved to a water body through a lifting assembly;

and in the S2, the primary hardened dental model on the clamp above the water pool is moved to the supporting net through the feeding and discharging robot.