JPH01160548A - Method and apparatus for preparing thermoplastic resin base denture - Google Patents
Method and apparatus for preparing thermoplastic resin base dentureInfo
- Publication number
- JPH01160548A JPH01160548A JP62320292A JP32029287A JPH01160548A JP H01160548 A JPH01160548 A JP H01160548A JP 62320292 A JP62320292 A JP 62320292A JP 32029287 A JP32029287 A JP 32029287A JP H01160548 A JPH01160548 A JP H01160548A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- thermoplastic resin
- compression molding
- upper mold
- lower mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920005992 thermoplastic resin Polymers 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims description 10
- 238000000748 compression moulding Methods 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000005192 partition Methods 0.000 description 4
- 210000003254 palate Anatomy 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 210000003456 pulmonary alveoli Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Dental Prosthetics (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は熱可塑性樹脂プレフォームを作製後、これを加
熱軟化し圧縮成形することからなる熱可塑性樹脂床義歯
の製造方法及び製造装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method and apparatus for producing a thermoplastic resin denture, which comprises producing a thermoplastic resin preform, softening it by heating, and compression molding it. It is.
［従来の技術］
近年、熱可塑性樹脂床義歯を製造するに際しては、ポリ
サルホン（以下、ＰＳＦと称する）、ポリエーテル（以
下、ＰＥＳと称する）、ポリカーボネート（以下、ＰＣ
と称する）等の熱可塑性樹脂を使用したレーニングエ法
と称される射出成形法によって義歯が作製されている。[Prior Art] In recent years, when manufacturing thermoplastic resin dentures, polysulfone (hereinafter referred to as PSF), polyether (hereinafter referred to as PES), polycarbonate (hereinafter referred to as PC),
Dentures are manufactured by an injection molding method called the Lehning method using thermoplastic resins such as .
そして、このような射出成形法においては、従来、圧縮
成形後直ちに上下の型を分離していた。In such injection molding methods, the upper and lower molds have conventionally been separated immediately after compression molding.
［発明が解決しようとする問題点］
しかしながら、圧縮成形後直ちに上下の型を分離すると
、熱可塑性樹脂自体の温度がまた高く、上下の型を分離
する際に剥がれ、又壊れる危険性が極めて高いという欠
点があった。[Problems to be solved by the invention] However, if the upper and lower molds are separated immediately after compression molding, the temperature of the thermoplastic resin itself will be high, and there is an extremely high risk that it will peel off or break when the upper and lower molds are separated. There was a drawback.
［問題点を解決するための手段］
従って、本発明は前記従来の方法における問題点を解決
したもので、圧縮成形後直ちに上下の型を分離すること
なく一体として取り出すことにより、義歯の変形および
破壊のない熱可塑性樹脂床義歯の製造方法及び製造装置
を提供することを目的とする。[Means for Solving the Problems] Therefore, the present invention solves the problems in the conventional methods, and eliminates the deformation and deformation of dentures by taking out the upper and lower molds as one piece immediately after compression molding without separating them. The object of the present invention is to provide a method and apparatus for manufacturing a thermoplastic resin denture that does not break.
そして、その目的は本発明によれば、熱可塑性樹脂プレ
フォームを作製し、これを上下割り型のうちの下型の上
に置いて加熱軟化し、人工歯を保持してなる上型とを重
ね合せ圧縮成形することからなる熱可塑性樹脂床義歯の
製造方法に於て、圧縮成形後上下割り型を一定時間分離
することなく一体として取り出すことを特徴とする熱可
塑性樹脂床義歯の製造方法、および、上下割り型のうち
の下型乾燥室、該下型の上に置かれた熱可塑性樹脂プレ
フォームの加熱軟化室、人工歯を保持してなる上型と前
記下型とを重ね合せ圧縮成形するプレス室とからなる熱
可塑性樹脂床義歯の製造装置に於て、該プレス室には該
上型を圧縮成形まで側方から保持する上型保持装置を設
け、該上型保持装置は圧縮成形後下向き外側に開くこと
により上下割り型を圧縮成形後一体として取り出すこと
を特徴とする熱可塑性樹脂床義歯の製造装置を提供する
ことによって達成される。According to the present invention, the purpose is to produce a thermoplastic resin preform, place it on the lower mold of the upper and lower molds, heat and soften it, and combine it with the upper mold holding the artificial tooth. A method for manufacturing a thermoplastic resin denture comprising overlapping compression molding, the method comprising: taking out the upper and lower split molds as one piece after compression molding without separating them for a certain period of time; A lower mold drying chamber of the upper and lower split mold, a heating softening chamber for the thermoplastic resin preform placed on the lower mold, and an upper mold holding an artificial tooth and the lower mold are overlapped and compressed. In a thermoplastic resin denture manufacturing device that includes a press chamber for molding, the press chamber is provided with an upper mold holding device that holds the upper mold from the side until compression molding, and the upper mold holding device is used for compression molding. This is achieved by providing a thermoplastic resin denture manufacturing apparatus characterized in that the upper and lower split molds are taken out as a unit after compression molding by opening downward and outward after molding.
［作用］
本発明の熱可塑性樹脂床義歯の製造方法において、圧縮
成形後直ちに上型と下型とを分離しないで上型と下型と
を密着保持し、自然冷却あるいは所定の冷却手段により
上型および下型な冷却すると、圧縮成形後高温状態の熱
可塑性樹脂が固化され、その後上型と下型を分離しても
熱可塑性樹脂は何等変形、破壊を起さない。[Function] In the method for manufacturing a thermoplastic resin denture of the present invention, the upper mold and lower mold are held in close contact without separating them immediately after compression molding, and the upper mold is cooled naturally or by a prescribed cooling means. When the mold and lower mold are cooled, the thermoplastic resin in a high temperature state after compression molding is solidified, and even if the upper mold and lower mold are separated thereafter, the thermoplastic resin does not undergo any deformation or destruction.
一方、圧縮成形後直ちに上型と下型を分離すると、熱可
塑性樹脂自体の温度が高いため、分離に際し剥がれたり
、変形する。On the other hand, if the upper and lower molds are separated immediately after compression molding, the temperature of the thermoplastic resin itself is high, causing it to peel or deform during separation.
［実施例］ 次に、本発明を実施例に基き、更に詳細に説明す葛。[Example] Next, the present invention will be explained in more detail based on examples.
まず、本発明では、口蓋部及び／又は歯槽部の形状に類
似した熱可塑性樹脂プレフォームを予め作製する。この
ような熱可塑性樹脂プレフォームの形状を具体的に示す
と、上顎の場合、口蓋部の厚さ０．５〜２．５ｍｍ 、
歯槽部の厚さ４〜１０＋ｓ■とじ、上顎の形状に沿って
適当な形を付与したものであり、下顎の場合は、口蓋部
がないため４〜１０ｍ１のプレートを下顎の形に類似さ
せたものである。First, in the present invention, a thermoplastic resin preform having a shape similar to that of the palate and/or alveolus is prepared in advance. Specifically showing the shape of such a thermoplastic resin preform, in the case of the upper jaw, the thickness of the palate is 0.5 to 2.5 mm,
The thickness of the alveolar part is 4 to 10+s■, and an appropriate shape is given to match the shape of the upper jaw.For the lower jaw, since there is no palate, a plate of 4 to 10 m1 is made to resemble the shape of the lower jaw. It is something.
また、加熱軟化処理条件としては、使用する熱可塑性樹
脂がＰＳＦの場合には３００〜３８０６Ｃ１好ましくは
３４０〜３８０°Ｃ，ＰＥＳの場合には３２０〜４００
°Ｃ１好ましくは３５０〜４００°ｃ、ｐｃの場合には
２５０〜３３０°Ｃ１好ましくは２７０〜３２０℃の温
度で２〜７分間、好ましくは４〜６分間加熱する。In addition, the heat softening treatment conditions are 300 to 3806 C1, preferably 340 to 380 °C when the thermoplastic resin used is PSF, and 320 to 400 °C in the case of PES.
It is heated at a temperature of preferably 350 to 400°C, 250 to 330°C in the case of pc, preferably 270 to 320°C, for 2 to 7 minutes, preferably 4 to 6 minutes.
又、圧縮成形に際し、その圧縮圧は概ね５０〜３００
ｋｇ／ｃｍ２であり、ＰＳＦ、ＰＣ，ＰＥＳによって変
り得るものである。Also, during compression molding, the compression pressure is approximately 50 to 300
kg/cm2, and can vary depending on PSF, PC, and PES.
以下、図示の実施例に沿って、本発明を説明する。The present invention will be described below with reference to illustrated embodiments.
第１図は本発明に係る熱可塑性樹脂床義歯の製造装置の
一実施例を示す全体正面図、第２図は下型乾燥室を示す
側面図、第３図はプレス部を示す側面図である。Fig. 1 is an overall front view showing an embodiment of the thermoplastic resin denture manufacturing apparatus according to the present invention, Fig. 2 is a side view showing the lower mold drying chamber, and Fig. 3 is a side view showing the press section. be.
第１図に示すように、本発明に係る熱可塑性樹脂床義歯
の製造装置は下型乾燥室Ａ、加熱軟化室Ｂ、プレス室Ｃ
及び上型乾燥室りとから成っている。As shown in FIG. 1, the thermoplastic resin denture manufacturing apparatus according to the present invention includes a lower mold drying chamber A, a heating softening chamber B, and a press chamber C.
and an upper mold drying room.
下型乾燥室Ａでは、石膏型からなる下型ｌをその上に載
せる多段のトレイ２がリフト３により昇降されるように
なっている。そして、第２図のように、側方には下型１
を乾燥させるためのヒータ４およびファン５が設けられ
ている。In the lower mold drying chamber A, a multistage tray 2 on which a lower mold l made of a plaster mold is placed is moved up and down by a lift 3. Then, as shown in Figure 2, there is a lower mold 1 on the side.
A heater 4 and a fan 5 are provided for drying.
加熱軟化室Ｂは、下型乾燥室Ａから送られてくる熱可塑
性樹脂プレフォームをその上に載せた下型ｌをヒータ６
、ファン７からの熱風によって加熱し該熱可塑性樹脂プ
レフォームを軟化させ、下型ｌ上に冠着させる。In the heating softening chamber B, the lower mold l, on which the thermoplastic resin preform sent from the lower mold drying chamber A is placed, is heated to a heater 6.
, the thermoplastic resin preform is heated by hot air from the fan 7 to soften it and is placed on the lower mold l.
プレス室Ｃにおいては、圧縮成形装置８が収容されてお
り、人工歯を保持してなる上型９（これは上型乾燥室り
において既に所定条件下で乾燥されている）は、スペー
サーｌＯを介して下向きに上型保持部材１１によって保
持される。この上室保持部材１１の構造は種々採り得る
が、本実施例においては内側に突片１２を付設した構造
を有しているものである。そして、上型９が上型乾燥室
りから取り出されて所定位置にセットされる場合には、
該上型保持部材１１はピン１３を支点として下向き外側
方向に開いた状態で上型９をスペーサーｌＯ下にセット
し、しかる後、上型保持部材１１を上向き内側に閉じる
ことにより、突片１２は、それと互いに相補的な上型９
の突状係止部１４と係止され、上型９が所定位置にセッ
トされることになる。In the press chamber C, a compression molding device 8 is housed, and an upper mold 9 holding an artificial tooth (this has already been dried under predetermined conditions in the upper mold drying chamber) is heated with a spacer lO. The upper mold holding member 11 holds the upper mold holding member 11 downward through the upper mold holding member 11 . The upper chamber holding member 11 may have various structures, but in this embodiment, it has a structure in which a protruding piece 12 is attached on the inside. Then, when the upper mold 9 is taken out from the upper mold drying chamber and set in a predetermined position,
The upper mold holding member 11 is opened downward and outward with the pin 13 as a fulcrum, and the upper mold 9 is set under the spacer lO, and then, by closing the upper mold holding member 11 upward and inward, the projecting piece 12 is opened. is a mutually complementary upper mold 9
The upper mold 9 is set in a predetermined position.
上型９がセットされた後、前記加熱軟化室Ｂから送られ
てくる熱可塑性樹脂が冠着された下型ｌと重ね合せられ
、第３図に示すように、エアシリンダー装置１５のロッ
ド１６を介しアーム１７の上昇により前記下型ｌを下方
から支える支持台１８を通して上型９と下型ｌとが所定
圧力、所定温度にて圧縮成形される。After the upper mold 9 is set, the thermoplastic resin sent from the heat softening chamber B is superimposed on the lower mold L capped with the thermoplastic resin, and as shown in FIG. 3, the rod 16 of the air cylinder device 15 The upper mold 9 and the lower mold 1 are compression-molded at a predetermined pressure and temperature through a support table 18 that supports the lower mold 1 from below by raising the arm 17 through the upper mold 9 and the lower mold 1.
そして、圧縮成形後は、上型保持部材１１がピン１３を
支点として下向き外側方向に開くことにより、アーム１
７の下降に伴って上型９と下型ｌは密着状態のまま一体
として取り出されるのである。従って、取り出された上
型９と下型ｌは、その後適当な冷却手段により冷却した
後、上型９と下型ｌとを分離し、熱可塑性樹脂床義歯の
割り出しを行う。After compression molding, the upper mold holding member 11 opens downward and outward using the pin 13 as a fulcrum, and the arm 1
As the mold 7 descends, the upper mold 9 and the lower mold 1 are taken out as a unit while remaining in close contact with each other. Therefore, the taken-out upper mold 9 and lower mold 1 are then cooled by a suitable cooling means, and then the upper mold 9 and the lower mold 1 are separated, and the thermoplastic resin denture is indexed.
そして、その後公知の工程であるパリ取り、研磨が行わ
れ、義歯が完成されることになる。Then, known processes such as deburring and polishing are performed to complete the denture.
なお、上型乾燥室りにおいては、前記したように人工歯
を保持してなる上型９が一定条件下で乾燥されているこ
とは前述の通りである。As described above, in the upper mold drying room, the upper mold 9 holding the artificial tooth is dried under certain conditions.
また、この実施例装置においては、下型乾燥室Ａから加
熱軟化室Ｂそして、更にプレス室Ｃへ、下型ｌを搬送す
る手段としてコンベア１９が使用されており、また、前
記下型乾燥室Ａと加熱軟化室Ｂの間の仕切り板２０、及
び加熱軟化室Ｂとプレス室Ｃの間の仕切り板２１が、下
型ｌの搬送状態、即ちコンベア１９による下型ｌの搬゛
送状態にあわせて自動的に開閉するようになっている。In addition, in this embodiment apparatus, a conveyor 19 is used as a means for conveying the lower mold l from the lower mold drying chamber A to the heating softening chamber B and further to the press chamber C, and the lower mold drying chamber The partition plate 20 between A and the heating softening chamber B and the partition plate 21 between the heating softening chamber B and the press chamber C are in the conveying state of the lower mold l, that is, in the conveying state of the lower mold l by the conveyor 19. It also opens and closes automatically.
従って、その操作は極めて効率的である。Therefore, its operation is extremely efficient.
［発明の効果］
以上説明した通り、本発明の熱可塑性樹脂床義歯の製造
方法とその装置によれば、圧縮成形後直ちに上下の型を
分離することなく一体として取り出し冷却しているので
、義歯の変形および破壊が生じない、という利点を有す
る。[Effects of the Invention] As explained above, according to the method and apparatus for manufacturing a thermoplastic resin base denture of the present invention, the upper and lower molds are immediately taken out and cooled as one body without separating them after compression molding, so that the denture It has the advantage that no deformation or destruction occurs.
第１図は本発明に係る熱可塑性樹脂床義歯の製造装置の
一実施例を示す全体正面図、第２図は下型乾燥室を示す
側面図、第３図はプレス部を示す側面図である。
ｌ・・・下型、２−・・トレイ、３・・・リフト、４・
・・ヒータ、５・・・ファン、６・・・ヒータ、７・・
・ファン、８−・・圧縮成形装置、９・・・上型、１０
・・・スペーサー、１１・・・上型保持部材、１２・・
・突片、１３−・・ピン、１４・・・突状係止部、ｌ
５−・・エアシリンダー装置、１６・・・ロッド、ｌ
７−・・アーム、１８・・・支持台、１９・・・コンベ
ア、２０・・・仕切り板、２１・・・仕切り板。Fig. 1 is an overall front view showing an embodiment of the thermoplastic resin denture manufacturing apparatus according to the present invention, Fig. 2 is a side view showing the lower mold drying chamber, and Fig. 3 is a side view showing the press section. be. l...lower mold, 2-...tray, 3...lift, 4-
...Heater, 5...Fan, 6...Heater, 7...
・Fan, 8--Compression molding device, 9...Upper mold, 10
... Spacer, 11... Upper mold holding member, 12...
・Protruding piece, 13-... pin, 14... protruding locking part, l
5-... Air cylinder device, 16... Rod, l
7- Arm, 18 Support stand, 19 Conveyor, 20 Partition plate, 21 Partition plate.
Claims (2)
割り型のうちの下型の上に置いて加熱軟化し、人工歯を
保持してなる上型とを重ね合せ圧縮成形することからな
る熱可塑性樹脂床義歯の製造方法に於て、圧縮成形後上
下割り型を一定時間分離することなく一体として取り出
すことを特徴とする熱可塑性樹脂床義歯の製造方法。(1) A thermoplastic resin preform is produced, placed on the lower mold of the upper and lower split mold, heated and softened, and then overlaid with the upper mold holding the artificial tooth and compression molded. A method for manufacturing a thermoplastic resin denture, characterized in that after compression molding, the upper and lower split molds are taken out as one piece without being separated for a certain period of time.
かれた熱可塑性樹脂プレフォームの加熱軟化室、人工歯
を保持してなる上型と前記下型とを重ね合せ圧縮成形す
るプレス室とからなる熱可塑性樹脂床義歯の製造装置に
於て、該プレス室には該上型を圧縮成形まで側方から保
持する上型保持装置を設け、該上型保持装置は圧縮成形
後下向き外側に開くことにより上下割り型を圧縮成形後
一体として取り出すことを特徴とする熱可塑性樹脂床義
歯の製造装置。(2) A lower mold drying chamber of the upper and lower split mold, a heating softening chamber for the thermoplastic resin preform placed on the lower mold, and an upper mold holding an artificial tooth and the lower mold are stacked together. In a thermoplastic resin denture manufacturing device comprising a press chamber for compression molding, the press chamber is provided with an upper mold holding device that holds the upper mold from the side until compression molding, and the upper mold holding device is A thermoplastic resin denture manufacturing device characterized in that the upper and lower split molds are taken out as one piece after compression molding by opening downward and outward after compression molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32029287A JPH0667392B2 (en) | 1987-12-18 | 1987-12-18 | Thermoplastic resin denture manufacturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32029287A JPH0667392B2 (en) | 1987-12-18 | 1987-12-18 | Thermoplastic resin denture manufacturing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01160548A true JPH01160548A (en) | 1989-06-23 |
| JPH0667392B2 JPH0667392B2 (en) | 1994-08-31 |
Family
ID=18119876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32029287A Expired - Lifetime JPH0667392B2 (en) | 1987-12-18 | 1987-12-18 | Thermoplastic resin denture manufacturing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0667392B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6232017U (en) * | 1985-08-14 | 1987-02-25 |
-
1987
- 1987-12-18 JP JP32029287A patent/JPH0667392B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6232017U (en) * | 1985-08-14 | 1987-02-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0667392B2 (en) | 1994-08-31 |
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