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CN-122008395-A - Manufacturing method and manufacturing device for cutting false tooth without connecting rod

CN122008395ACN 122008395 ACN122008395 ACN 122008395ACN-122008395-A

Abstract

The invention provides a manufacturing method and a manufacturing device for connecting rod-free cutting of a cutting denture, wherein the manufacturing method comprises the steps of conducting connecting rod-free cutting on a ceramic disc, bonding the denture by adopting a bonding medium in the connecting rod-free cutting, enabling the local tensile stress of the bonding medium to be less than or equal to 30MPa and the bonding force of the bonding medium to be more than or equal to 1MPa, enabling the connecting rod-free cutting unit to be used for conducting bonding fixing and processing on the dentures by adopting the bonding medium, enabling the medium removing unit to be used for removing the bonding medium on the surface of the denture, and enabling the sintering unit to be used for sintering the denture. The invention can realize the cutting of the false tooth without a connecting rod, simultaneously reduce the cracking phenomenon of the surface of the false tooth, improve the cutting success rate, further shorten the manufacturing time and improve the production efficiency.

Inventors

  • SUN KAI
  • SUN DI
  • LI YONGJUN
  • FENG AIHUA

Assignees

  • 爱迪特（秦皇岛）科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (10)

  1. 1. The manufacturing method of the cutting denture without connecting rod is characterized by comprising the steps of performing the cutting without connecting rod on a ceramic disc, wherein the denture is bonded by adopting a bonding medium in the cutting without connecting rod; the local tensile stress of the bonding medium is less than or equal to 30MPa, and the bonding force of the bonding medium is more than or equal to 1MPa.
  2. 2. The method of claim 1, wherein the kinematic viscosity of the bonding medium is 10-15 mm 2 /s at 100 ℃; preferably, the melting point of the bonding medium is 70-130 ℃; preferably, the bonding medium is microcrystalline wax.
  3. 3. The manufacturing method according to claim 1 or 2, characterized in that the manufacturing method comprises the steps of: Performing connection-rod-free cutting on the ceramic disc, wherein a bonding medium is adopted to bond the denture in the connection-rod-free cutting, so as to obtain a first denture with the bonding medium; Removing the bonding medium on the surface of the denture to obtain a second denture; and sintering the second denture to obtain a denture product.
  4. 4. The method according to claim 3, wherein the removing the adhesive medium from the denture surface comprises subjecting the first denture to a first negative pressure heat treatment, a second fluid washing and a third drying in this order; Preferably, the pressure of the first negative pressure heat treatment is 0.3-0.8 MPa; preferably, the temperature T1 of the first negative pressure heat treatment is greater than the melting point T2 of the bonding medium; Preferably, the temperature T1 of the first negative pressure heat treatment and the melting point T2 of the bonding medium meet the condition that T1-T2 is more than or equal to 30 ℃; Preferably, the time of the first negative pressure heat treatment is 10-60 min; Preferably, the bonding medium is melted and flows from the first denture surface into the medium recovery groove during the first negative pressure heat treatment; Preferably, the second fluid cleaning comprises that the denture placement component with the first denture is put into a cleaning tunnel, and the fluid is introduced into the cleaning tunnel through an air hole to flush the residual bonding medium on the surface of the first denture; preferably, the temperature of the second fluid cleaning is 120-180 ℃; preferably, the second fluid is cleaned for 30-60 min; Preferably, the pressure of the second fluid cleaning is 0.3-0.4 MPa; Preferably, the second fluid cleaning fluid comprises any one or a combination of at least two of air, steam or a wax remover; Preferably, the wax removing agent comprises n-hexane and/or n-heptane; Preferably, the temperature of the third drying is 120-180 ℃; preferably, the third drying time is 60-120 min; preferably, the sintering comprises a first temperature raising stage, a second temperature raising stage and a heat preservation stage; Preferably, the temperature rising rate of the first temperature rising stage is 40-60 ℃ per minute; preferably, the final temperature of the first heating stage is 1000-1100 ℃; preferably, the temperature rising rate of the second temperature rising stage is 1-10 ℃ per minute; preferably, the final temperature of the second heating stage is 1500-1600 ℃; preferably, the time of the heat preservation stage is 50-70 min.
  5. 5. The method of manufacturing according to claim 3 or 4, wherein the performing the connectionless cutting of the ceramic disk comprises: The method comprises the steps of performing first processing on a first surface of a ceramic disc according to a typesetting path to form a preliminary denture, wherein gaps are reserved between the first surfaces of the preliminary denture, second surfaces of the preliminary denture are connected with each other, and the first surfaces and the second surfaces are oppositely arranged; Filling a bonding medium into the gap of the preliminary denture; And turning over the ceramic disc filled with the bonding medium, and performing second processing on the second surface of the ceramic disc after turning over to form the first denture.
  6. 6. The method according to claim 5, wherein a gap distance between adjacent dentures in the typesetting path is 3 to 5mm; preferably, the first face is a dental root of a denture; preferably, the second face is the tooth tip of a denture; Preferably, the filling of the gap of the preliminary denture with the bonding medium includes: Heating the bonding medium in the medium storage cavity to a first temperature and performing first heat preservation, and opening an air valve to control the internal pressure of the medium storage cavity; Performing first automatic dispensing in the gap of the preliminary denture according to the dispensing path until the first automatic dispensing is leveled with the height of the processing surface; after a first time interval, performing second automatic dispensing in the gap of the preliminary denture according to the dispensing path until the height of the preliminary denture is leveled with the height of the processing surface again, and then solidifying; Preferably, the first temperature T3 is greater than the melting point T2 of the bonding medium; Preferably, the first temperature T3 and the melting point T2 of the bonding medium meet the condition that T3-T2 is more than or equal to 30 ℃; Preferably, the first heat preservation time is 5-10 min; preferably, the internal pressure is 0.1-0.2 MPa; Preferably, the speeds of the first automatic dispensing and the second automatic dispensing are respectively and independently 10-25 mL/min; Preferably, the first duration is 40-120 s; preferably, the means of solidification comprises cooling; preferably, the cooling time is 5-10 min; Preferably, the temperature of the cooled ceramic disc is less than or equal to 35 ℃.
  7. 7. A manufacturing apparatus for connecting a cutting denture without a connecting rod, the manufacturing apparatus comprising: The cutting unit without connecting rod is used for adopting a bonding medium to bond, fix and process the false teeth; A medium removing unit for removing the adhesive medium on the denture surface; and the sintering unit is used for sintering the false tooth.
  8. 8. The apparatus according to claim 7, wherein the medium removing unit includes a denture placement member, and the denture placement member sequentially includes a first medium removing part, a second medium removing part, and a third drying part along the denture treatment process, and the denture placement member sequentially performs first medium removing, second medium removing, and third drying by the first medium removing part, the second medium removing part, and the third drying part; Preferably, the denture placement component comprises a denture tray and a medium recovery part arranged at the lower part of the denture tray, wherein the bottom of the denture tray is provided with a mesh structure; Preferably, the medium recovery part includes a medium recovery tank; Preferably, the first medium removing part comprises a drying oven; preferably, the second medium removing part comprises a cleaning tunnel, and a plurality of air holes for cleaning fluid to pass through are formed in the cleaning tunnel; Preferably, the second medium removing part further comprises a cleaning fluid conveying device connected with the cleaning tunnel; Preferably, the third drying section comprises a forced air drying oven.
  9. 9. The manufacturing apparatus as set forth in claim 7 or 8, wherein the connectionless cutting unit includes: the processing part comprises at least one processing module, and the processing part carries out first processing on the first surface of the ceramic disc according to the typesetting path to form a preliminary denture, wherein a gap is reserved between the first surfaces of the preliminary denture, the second surfaces of the preliminary denture are connected with each other, and the first surfaces and the second surfaces are arranged oppositely; a glue coating part for filling a bonding medium into the gap of the preliminary denture; The turnover part is used for turning over the ceramic disc after the gluing part is filled with the bonding medium; the processing part is also used for performing second processing on the second surface of the ceramic disc after the turnover so as to form a first false tooth; And the control system is used for controlling the processing operations of the processing part, the gluing part and the turning part according to the working procedures.
  10. 10. The manufacturing apparatus according to claim 9, wherein the glue spreading portion includes a medium storage chamber and a medium delivery pipe connected to the medium storage chamber, and a gas valve for controlling the pressure in the medium storage chamber is provided in the medium storage chamber; preferably, the glue spreading part further comprises a heat preservation part arranged outside the medium storage cavity; Preferably, the glue spreading part further comprises a temperature control piece arranged on the heat preservation part; preferably, a gluing program is arranged in the control system, and the gluing program is used for controlling the air valve to carry out a gluing process; Preferably, the gluing procedure comprises at least two gluing procedures; preferably, the gluing procedure comprises a first gluing procedure and a second gluing procedure.

Description

Manufacturing method and manufacturing device for cutting false tooth without connecting rod Technical Field The invention relates to the technical field of denture processing, in particular to a manufacturing method and a manufacturing device for cutting dentures without connecting rods. Background The false tooth is an artificial tooth which is inlaid for recovering the functions of chewing, beautiful appearance, pronunciation and the like after the tooth is fallen or removed. The medicine is a general term for a prosthesis produced after partial or complete teeth of upper and lower teeth are missing. At present, the connecting rod is adopted for fixing and typesetting in the process of processing and forming the false tooth from the ceramic disc, and because the false tooth structure is smaller, the connecting rod is needed to be removed through manual cutting subsequently, the time consumption is long, and the false tooth surface damage is easily caused by the manual polishing procedure. The artificial denture has slow production speed, low working efficiency, low product yield and difficult adaptation to denture processing requirements. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide a manufacturing method and a manufacturing device for cutting false teeth without connecting rods, which can reduce the crack rate of the surface of zirconia false teeth in the automatic cutting false teeth without connecting rods, further improve the production efficiency, recycle media and have wide application prospect. To achieve the purpose, the invention adopts the following technical scheme: In a first aspect, the present invention provides a method for producing a cut denture without tie bars, comprising performing a tie bar-free cutting of a ceramic disc, wherein a bonding medium is used to bond the denture. The local tensile stress of the bonding medium is less than or equal to 30MPa, and the bonding force of the bonding medium is more than or equal to 1MPa. At present, the artificial denture has slow production speed and low working efficiency, so that the applicant develops a method for cutting the artificial denture without a connecting rod, the production efficiency can be improved, the manpower is reduced, and the mechanical production is realized. In the process of connecting rod-free cutting, the mechanical production can be realized by adopting a bonding medium to bond the false tooth, however, different bonding mediums easily influence the zirconia false tooth, and researches show that the bonding medium can generate local tensile stress in the curing process, when the local tensile stress of the bonding medium is in the range, the crack rate of the surface of the zirconia false tooth can be reduced, the surface integrity of the false tooth in the mechanical production can be improved, the bonding force of the bonding medium can ensure that the false tooth is firmly fixed in the processing process, and the production stability can be improved. The bonding medium may have a local tensile stress of not more than 30MPa, for example, 1MPa, 5MPa, 8MPa, 11MPa, 14MPa, 18MPa, 21MPa, 24MPa, 27MPa, or 30MPa, but is not limited to the values recited, and other non-recited values within the range are equally applicable, and the bonding medium may have a bonding force of not less than 1MPa, for example, 1MPa, 2MPa, 3MPa, 4MPa, 5MPa, 6MPa, 7MPa, 8MPa, 9MPa, or 10MPa, but is not limited to the values recited, and other non-recited values within the range are equally applicable. Preferably, the kinematic viscosity of the bonding medium at 100 ℃ is 10-15 mm 2/s, for example 10mm2/s、10.6mm2/s、11.2mm2/s、11.7mm2/s、12.3mm2/s、12.8mm2/s、13.4mm2/s、13.9mm2/s、14.5mm2/s or 15mm 2/s, etc., but the bonding medium is not limited to the recited values, and other non-recited values in the range are equally applicable. According to the research, when the kinematic viscosity of the bonding medium is in the range, the infiltration into the zirconia surface in the production process can be reduced as much as possible, so that the carbon content of the zirconia denture after the denture is sintered is reduced, the service life of the denture is prolonged, and the biological safety of the denture in the service process is improved. Preferably, the melting point of the bonding medium is 70 to 130 ℃, for example, 70 ℃, 77 ℃, 84 ℃,90 ℃, 97 ℃, 104 ℃, 110 ℃, 117 ℃, 124 ℃, 130 ℃ or the like, but not limited to the recited values, and other non-recited values within the range are equally applicable. The melting point of the bonding medium is preferably within the above range, so that the bonding medium is convenient to cool and solidify, and the equipment is resistant to temperature and energy consumption. Preferably, the bonding medium is microcrystalline wax. According to the research, the microcrystalline wax with the specific melting point is used as a bonding medium, so that the surface of