Milk molar transparent preformed crown manufacturing jig

Abstract

The utility model discloses a mammary molar transparent preformed crown manufacturing jig which comprises a machine body, a 3D printing head is detachably installed on the machine body, and the machine body achieves vertical double-shaft sliding of the 3D printing head on the machine body through a first driving assembly; the translation seat is horizontally and slidably arranged on the machine body through a synchronous belt linear sliding table, a printing platform is rotatably arranged on the translation seat, and the translation seat realizes intermittent rotation of the printing platform relative to the translation seat through a second driving assembly; and the printing seats are arranged on the printing platform in a sliding mode in the radial direction of the printing platform, and the printing seats horizontally and linearly move relative to the printing platform in the moving direction of the translation seat through a pushing assembly. The transparent preformed crown for repairing the mastomolar can be customized and manufactured, the fitting degree between the preformed crown and the mastomolar is guaranteed, and meanwhile the shaping workload is reduced.

Description

Technical Field

[0001] The utility model relates to the field of oral material manufacturing, in particular to a manufacturing jig for a deciduous molar transparent preformed crown. Background Art

[0002] A transparent prefabricated crown is a prefabricated crown with a transparent outer shell that is similar to the shape of the tooth. It is hollow inside to accommodate resin, and the sub-crown cover needs to be removed after restoration. Transparent prefabricated crowns are mainly suitable for children's front teeth caries, especially large areas of defects in deciduous front teeth. Transparent prefabricated crowns have both aesthetics and restoration strength, and the restoration shedding rate is significantly lower than that of simple resin fillings. At present, because the existing transparent prefabricated crowns are directly used in models suitable for the patient's tooth size, there is a situation where they cannot completely match the tooth size, which increases the workload of subsequent shaping.

[0003] Due to the low aesthetic requirements of posterior teeth and the high chewing force they have to bear, the prefabricated crowns for deciduous molars used in the repair of posterior tooth defects are mostly made of stainless steel. Different types of metal prefabricated crowns can be used to repair deciduous molar defects of different teeth and sizes. However, metal prefabricated crowns also have their unavoidable disadvantages: ① The lack of aesthetics may also affect the social and mental health of the children, and the requirements of children and parents for aesthetics are also increasing. With the people's growing material and cultural needs, some parents are gradually unable to accept the restoration of deciduous molars with metal prefabricated crowns; ② The continuous free release of metal ions often leads to irreversible black staining of the gums at the tooth position repaired by the metal crown; ③ Some children are unable to use metal prefabricated crowns to repair large-area deciduous molar defects due to allergies to metal ions such as nickel and chromium.

[0004] Therefore, more beautiful prefabricated restorations such as all-ceramic prefabricated crowns made of zirconia as the main material came into being. However, due to the high price of zirconia all-ceramic crowns, most parents generally cannot accept the high cost of restoration, and the edges of all-ceramic crowns cannot be finely trimmed, so there are often cases where the edges are not tight. If pulp periapical disease occurs, the already made all-ceramic crowns will face destructive removal and other situations, resulting in material waste. Utility Model Content

[0005] The utility model aims to provide a manufacturing jig for transparent prefabricated crowns for deciduous molars, which can realize customized manufacturing of transparent prefabricated crowns for repairing deciduous molars, thereby replacing metal prefabricated crowns and all-ceramic prefabricated crowns for repairing deciduous molars, while ensuring the fit between the prefabricated crowns and the deciduous molars and reducing the workload of shaping.

[0006] The technical solution adopted by the utility model to solve the above problems is:

[0007] A jig for manufacturing a transparent prefabricated crown for deciduous molars, comprising:

[0008] A machine body, on which a 3D printing head suitable for transparent filaments is detachably mounted, and the machine body realizes vertical biaxial sliding of the 3D printing head on the machine body through a first driving assembly;

[0009] A translation seat is horizontally slidably arranged on the machine body through a synchronous belt linear slide, the movement direction of the translation seat is perpendicular to the movement direction of the sliding seat, a printing platform is rotatably arranged on the translation seat, and the translation seat realizes intermittent rotation of the printing platform relative to the translation seat through a second driving assembly;

[0010] A plurality of printing seats are arranged on the printing platform for radial sliding along the printing platform. The printing seats are arranged at equal angles around the central axis of the printing platform. The printing seats realize horizontal linear movement relative to the printing platform along the moving direction of the translation seat through a pushing component.

[0011] As a further improvement of the above technical solution, the pushing assembly includes a pushing rod, which realizes horizontal sliding on the translation seat through a linear driving device. A protrusion is provided on the bottom surface of the printing seat, and two limit blocks are provided on the outer end of the pushing rod. The pushing rod and the protrusion and limit block on the printing seat in the same radial direction of the printing platform are in the same straight line, and a limiting space for accommodating the protrusion is provided between the two limit blocks, and the limiting space can be located on the rotation trajectory of the protrusion.

[0012] As a further improvement of the above technical solution, the printing platform includes a rotating seat and a connecting seat, the rotating seat is rotatably set on the translation seat, the connecting seat is disc-shaped and is detachably installed on the rotating seat, and the printing seat is slidably set on the connecting seat.

[0013] As a further improvement of the above technical solution, a first through hole is vertically penetrated on the printing base, a second through hole is opened on the connecting base at a position opposite to the first through hole, and the first through hole and the second through hole are connected to form an air blowing channel.

[0014] As a further improvement of the above technical solution, a spring for applying a force to the printing seat to move inward is provided between the printing seat and the connecting seat, and two ends of the spring respectively abut against the printing seat and the connecting seat.

[0015] As a further improvement of the above technical solution, the first driving assembly includes a sliding seat, the sliding seat is slidably arranged on the machine body through a cross slide, and the 3D printing head is installed on the sliding seat.

[0016] As a further improvement of the above technical solution, two cooling fans are detachably mounted on the sliding seat, and the two cooling fans are symmetrically arranged relative to the 3D printing head.

[0017] As a further improvement of the above technical solution, the second driving component includes a driving motor, and the driving motor and the printing platform are connected to each other through a gear transmission mechanism.

[0018] As a further improvement of the above technical solution, a hanger for hanging the wire roll is detachably mounted on the machine body.

[0019] Compared with the prior art, the utility model has the following advantages and effects:

[0020] (1) The utility model realizes the 3D printing and manufacturing of transparent prefabricated crowns for deciduous molars on each printing seat in sequence by driving the printing platform to rotate intermittently through the second driving component and the driving effect of the pushing component to drive the printing seat to slide horizontally, combined with the effect of the first driving component driving the 3D printing head to slide vertically on both axes, thereby achieving the purpose of customizing transparent prefabricated crowns for repairing multiple deciduous molars of the same patient, while improving the aesthetics of subsequent deciduous molar restorations while ensuring the fit between the prefabricated crowns and the deciduous molars during restoration, reducing the workload of shaping and improving the restoration quality of deciduous molars.

[0021] (2) The utility model prints and manufactures a plurality of transparent prefabricated crowns for deciduous molars in sequence, so that the user can stop the printing process in time when a manufacturing error occurs, thereby reducing the waste caused by printing errors while not affecting the manufacturing of transparent prefabricated crowns for deciduous molars.

[0022] (3) The utility model repairs deciduous molars by manufacturing transparent prefabricated crowns to replace metal prefabricated crowns and all-ceramic prefabricated crowns, thereby reducing the cost of restoration while ensuring the aesthetics and strength of the restoration, and also improving the visibility of the restoration operation and ensuring the accuracy of the restoration operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a structural schematic diagram of a jig for manufacturing a transparent preformed crown for deciduous molars.

[0024] Figure 2 The utility model is a partial structural schematic diagram of a jig for manufacturing a transparent preformed crown for deciduous molars.

[0025] Figure 3 yes Figure 2 A schematic cross-sectional view of the local structure of the printing platform shown in FIG.

[0026] Figure 4 yes Figure 2 A schematic diagram of the structure of a local printing platform is shown in FIG.

[0027] Among them, the body 1, the 3D printing head 11, the synchronous belt linear slide 12, the bracket 13, the translation seat 2, the printing seat 3, the first driving component 4, the sliding seat 41, the cross slide 42, the cooling fan 43, the printing platform 5, the rotating seat 51, the connecting seat 52, the spring 53, the second driving component 6, the driving motor 61, the gear transmission mechanism 62, the pushing component 7, the pushing rod 71, the linear driving device 72, the protrusion 73, the limit block 74, the limit space 75, the first through hole 81, the second through hole 82, and the blowing channel 83. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0029] See also Figure 1-Figure 4 The present embodiment is a jig for manufacturing transparent preformed crowns of deciduous molars, comprising a body 1, a translation seat 2 and a plurality of printing seats 3. A 3D printing head 11 suitable for transparent filaments is detachably mounted on the body 1. The body 1 realizes vertical biaxial sliding of the 3D printing head 11 on the body 1 through a first driving component 4. The translation seat 2 is horizontally slidably arranged on the body 1 through a synchronous belt linear slide 12. The moving direction of the translation seat 2 is perpendicular to the moving direction of the sliding seat 41. A printing platform 5 is rotatably arranged on the translation seat 2. The translation seat 2 realizes intermittent rotation of the printing platform 5 relative to the translation seat 2 through a second driving component 6. The printing seat 3 is radially slidably arranged on the printing platform 5. Each printing seat 3 is arranged at equal angles around the central axis of the printing platform 5. The printing seat 3 realizes horizontal linear movement relative to the printing platform 5 along the moving direction of the translation seat 2 through a pushing component 7.

[0030] When in use, the translation seat 2 is driven to move horizontally relative to the body 1 by the synchronous belt linear slide 12, so as to greatly adjust the distance between the printing platform 5 and the 3D printing head 11, and then the printing seat 3 is driven to move horizontally and linearly relative to the body 1 by the pushing component 7, and the 3D printing head 11 is driven to slide vertically in two axes relative to the body 1 in combination with the first driving component 4, so that the scanned patient's deciduous molar model data can be completed on the printing seat 3 via the 3D printing head 11 to complete the corresponding deciduous molar pre-crown printing operation, and after printing is completed, the printing seat 3 is driven to reset by the pushing component 7, and then the printing platform 5 is driven to rotate a certain angle relative to the translation seat 2 by the second driving component 6, so that the next printing seat 3 can be driven by the pushing component 7 to realize the 3D printing head 11 to perform the printing operation of the deciduous molar pre-crown on it.

[0031] The printing seats 3 can be numbered to ensure orderly collection and placement of multiple prefabricated crowns of deciduous molars in the same batch on the printing platform 5 after printing is completed, so as to facilitate their use in subsequent tooth restoration.

[0032] In order to facilitate the proper placement of the wire roll, a hanger 13 for hanging the wire roll is detachably installed on the body 1, wherein the material of the wire roll is thermoplastic polyurethane, so that the printed deciduous molar pre-crown can be transparent, thereby improving the convenience of the deciduous molar defect repair operation.

[0033] See also Figure 1 The first driving component 4 includes a sliding seat 41, which is slidably arranged on the body 1 through a cross slide 42, and the 3D printing head 11 is detachably installed on the sliding seat 41, thereby ensuring the printing effect of the 3D printing head 11 on the printing seat 3.

[0034] Among them, two cooling fans 43 are detachably mounted on the sliding seat 41 , and the two cooling fans 43 are arranged symmetrically with respect to the 3D printing head 11 , thereby reducing the risk of overheating of the 3D printing head 11 .

[0035] See also Figure 2-Figure 4 The printing platform 5 includes a rotating seat 51 and a connecting seat 52. The rotating seat 51 is rotatably arranged on the translation seat 2. The connecting seat 52 is disc-shaped and detachably mounted on the rotating seat 51. The printing seat 3 is slidably arranged on the connecting seat 52. A spring 53 for applying an inward movement force to the printing seat 3 is provided between the printing seat 3 and the connecting seat 52. The two ends of the spring 53 are respectively against the printing seat 3 and the connecting seat 52, so that the printing seat 3 can be retracted to the connecting seat 52 under the action of the spring 53, thereby reducing the risk of damage to the prefabricated crown of the deciduous molar on the printing seat 3. Through the assembled structure of the printing platform 5, while reducing the difficulty of installing the printing platform 5 on the translation seat 2, the connecting seat 52 can also be disassembled to remove the prefabricated crown of the deciduous molar in the printing seat 3 thereon, thereby improving the convenience of operation.

[0036] Among them, a first through hole 81 is vertically penetrated on the printing base 3, and a second through hole 82 is opened on the connecting base 52 at a position opposite to the first through hole 81. The first through hole 81 is connected to the second through hole 82 to form a blowing channel 83, so that the pre-fabricated crown of the deciduous molar can be assisted to be removed from the printing base 3 by blowing air into the blowing channel 83.

[0037] In this embodiment, the connection seat 52 and the rotating seat 51 are connected via a snap-fit ​​structure.

[0038] See also Figure 3 The second driving component 6 includes a driving motor 61, and the driving motor 61 and the printing platform 5 are connected by a gear transmission mechanism 62, thereby avoiding the motion interference of the pushing component 7 on the second driving component 6, thereby ensuring the driving effect of the second driving component 6.

[0039] See also Figure 3 The pushing assembly 7 includes a pushing rod 71, which realizes horizontal sliding on the translation seat 2 through a linear driving device 72. A protrusion 73 is provided on the bottom surface of the printing seat 3, and two limit blocks 74 are provided on the outer end of the pushing rod 71. The pushing rod 71 and the protrusion 73 and the limit block 74 on the printing seat 3 in the same radial direction of the printing platform 5 are in the same straight line. A limit space 75 for accommodating the protrusion 73 is provided between the two limit blocks 74, and the limit space 75 can be located on the rotation trajectory of the protrusion 73.

[0040] During the intermittent rotation of the printing platform 5 relative to the translation seat 2, the protrusions 73 on each printing seat 3 can move into the limited space 75 in turn, so that the push rod 71 can drive the printing seat 3 to move linearly relative to the 3D printing head 11. Combined with the vertical biaxial sliding effect of the 3D printing head 11 on the body 1, the 3D printing head 11 can print the pre-crowns of deciduous molars on each printing seat 3 in turn, thereby achieving the purpose of printing multiple different pre-crowns of deciduous molars required for the same patient, and after printing, the pre-crowns of deciduous molars can be uniformly collected and placed, ensuring the integrity of the same batch of multiple pre-crowns of deciduous molars before use.

[0041] In this embodiment, the linear drive device 72 is a screw motor, and the inner end of the push rod 71 is sleeved on the output shaft of the screw motor in a threaded manner.

[0042] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. A jig for manufacturing transparent prefabricated crowns for deciduous molars, characterized in that: include: A machine body, on which a 3D printing head suitable for transparent filaments is detachably mounted, and the machine body realizes vertical biaxial sliding of the 3D printing head on the machine body through a first driving assembly; A translation seat is horizontally slidably arranged on the machine body through a synchronous belt linear slide, the movement direction of the translation seat is perpendicular to the movement direction of the sliding seat, a printing platform is rotatably arranged on the translation seat, and the translation seat realizes intermittent rotation of the printing platform relative to the translation seat through a second driving assembly; A plurality of printing seats are arranged on the printing platform for radial sliding along the printing platform. The printing seats are arranged at equal angles around the central axis of the printing platform. The printing seats realize horizontal linear movement relative to the printing platform along the moving direction of the translation seat through a pushing component.

2. The jig for manufacturing a transparent prefabricated crown for deciduous molars according to claim 1, characterized in that: The pushing assembly includes a pushing rod, which realizes horizontal sliding on the translation seat through a linear driving device. A protrusion is provided on the bottom surface of the printing seat, and two limit blocks are provided on the outer end of the pushing rod. The pushing rod and the protrusion and limit block on the printing seat in the same radial direction of the printing platform are in the same straight line, and a limiting space for accommodating the protrusion is provided between the two limit blocks, and the limiting space can be located on the rotation trajectory of the protrusion.

3. The jig for manufacturing a transparent prefabricated crown for deciduous molars according to claim 1, characterized in that: The printing platform comprises a rotating seat and a connecting seat. The rotating seat is rotatably arranged on the translation seat. The connecting seat is disc-shaped and detachably installed on the rotating seat. The printing seat is slidably arranged on the connecting seat.

4. The jig for manufacturing a transparent prefabricated crown for deciduous molars according to claim 3, characterized in that: A first through hole is vertically penetrated on the printing seat, a second through hole is disposed on the connecting seat at a position opposite to the first through hole, and the first through hole is connected with the second through hole to form an air blowing channel.

5. The jig for manufacturing a transparent prefabricated crown for deciduous molars according to claim 3, characterized in that: A spring for applying a force for the printing seat to move inward is arranged between the printing seat and the connecting seat, and two ends of the spring are respectively pressed against the printing seat and the connecting seat.

6. The jig for manufacturing a transparent prefabricated crown for deciduous molars according to claim 1, characterized in that: The first driving assembly comprises a sliding seat, the sliding seat is slidably arranged on the machine body through a cross slide, and the 3D printing head is installed on the sliding seat.

7. The jig for manufacturing a transparent prefabricated crown for deciduous molars according to claim 6, characterized in that: Two cooling fans are detachably mounted on the sliding seat, and the two cooling fans are symmetrically arranged relative to the 3D printing head.

8. The jig for manufacturing a transparent prefabricated crown for deciduous molars according to claim 2, characterized in that: The second driving assembly includes a driving motor, and a gear transmission mechanism is used to realize transmission connection between the driving motor and the printing platform.

9. The jig for manufacturing a transparent prefabricated crown for deciduous molars according to claim 1, characterized in that: A hanging rack for hanging the wire coil is detachably mounted on the machine body.

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