JP2594413Y2 - Resin denture manufacturing equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin denture manufacturing apparatus which clamps a flask containing a female denture inside and applies a pressing force to a resin injection port of the female denture.

[0002]

2. Description of the Related Art Flask A serving as a mold for resin dentures
Is a three-part structure as shown in FIG. 2, a lower case 1 having an upper opening, an upper case 2 having upper and lower openings, and being overlaid on the lower case 1, and a lid for covering the upper case 2. And 3. A column-shaped boss 4 protrudes substantially at the center of the upper surface of the lid 3, and the boss 4 is provided with a resin injection port 5 penetrating vertically.

In order to form a resin denture using the flask A, first, a male mold B made of a brazing material is inserted into the lower case 1, and the lower case 1 is filled with gypsum and the lower part of the male mold B is removed. Embed. After the filled gypsum has hardened, the separating liquid is applied to the upper surface of the gypsum, and then the upper case 2 is placed on the lower case 1 and the upper case 2 is filled with the gypsum to remove the upper part of the male mold B. After the gypsum is set and the gypsum is hardened, the top surface of the gypsum is flattened, and the packing and the lid 3 are covered.

At this time, a male passage 6 of a brazing filler metal is provided between the resin inlet 4 of the lid 3 and the male die B as a filling passage for the resin material. Next, the flask A is immersed in hot water to heat the solder, and the melted solder is discharged to form a gypsum female mold in the flask A.

In order to manufacture a resin denture using this female mold, the flask A is placed on a mounting table of a manufacturing apparatus. The resin denture manufacturing apparatus is provided with a clamp device and a pressurizing device. The clamp device presses the flask A from above and below so that the flask A having the three-part structure does not separate, and the heated resin is injected into the resin injection hole 5. To fill the female mold with resin.

The volume of the injected resin is reduced when the resin is cooled and hardened, causing sink marks. The resin in the resin injection hole 5 is pressurized from the outside by a pressurizing device, and the resin that contracts by cooling becomes a mold. Prevents sinking by pushing it fully into the inside. At this time, since the flask A is clamped from the outside by the clamp device, the upper case 1 and the lid 3 do not rise. When the resin in the mold solidifies, a resin denture having the same shape as the male mold made of brass is completed.

[0007]

Problems to be Solved by the Invention The above-mentioned conventional apparatus for manufacturing a resin denture has the following problems. (1) The resin denture manufacturing apparatus requires a clamp for tightening the flask A and a pressurizing device for pressing the resin injection hole 5. Since the pressurizing device is provided at the center of the manufacturing device, clamps are required on both sides of the pressurizing device, and there has been a problem that the structure of the manufacturing device is complicated and the size is increased. (2) Each time a resin denture is manufactured, an operation of tightening the flask A with a clamp and an operation of pressing the resin injection port 4 with a pressurizing device are required, which makes the operation of the operator cumbersome. there were. The purpose of the present invention is to solve such a problem.

[0008]

In order to achieve the above object, a resin denture manufacturing apparatus of the present invention has a mounting surface on which a flask containing a female mold of a resin denture is mounted. A gate-shaped pedestal composed of two columns and an upper wall is erected on a base plate, a nut is fixed to a hole provided at the center of the upper wall, and a pressure screw is screwed to the nut. A handle is provided at the upper part of the pressure screw, a pressing plate is rotatably fitted to the lower end of the pressing screw, and a lower wall of the pressing plate has a peripheral wall and a bottom wall at the lower end of the peripheral wall. A spring case provided with a through hole is fixed, and an elevating member and an injection port pressing spring for urging the elevating member downward are inserted into the spring case, and the lower end of the elevating member is passed through the through hole. And an injection port pressing portion protruding toward the resin injection port of the flask is provided. The is characterized in the provision of the flask pressing spring flask pressing surface is formed at the lower end is supported on the pressing plate.

[0009]

The resin denture manufacturing apparatus constructed as described above has a simple structure because only one pressing device is provided at the center. After filling the injection port of the flask placed on the mounting surface of the base plate of the manufacturing apparatus with resin, when the handle is rotated, the pressing plate is lowered, and the flask pressing spring supported at the upper end by the pressing plate is mounted. The table clamps the upper and lower surfaces of the flask. When the handle is further rotated, the injection port pressing portion presses the resin in the resin injection port, thereby preventing resin sink. Accordingly, the clamp and the resin in the resin inlet are pressed only by the turning operation of the handle.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. As shown in a partially cutaway front view of FIG. 1, a resin denture manufacturing apparatus C has a mounting surface 7a of a flask A on an upper surface. A gate-shaped base 8 is erected on the base plate 7. Stand 8
Is formed by bending from a plate material, two pillars 9 and an upper wall 10 connecting upper ends of both pillars 9 are formed, and both sides of the pillar 9 and the upper wall 10 are bent inward at right angles,
The cross-sectional shape is formed in a U-shape.

At the substantially center of the upper wall 10, a hole 11 penetrating vertically is provided, and the nut 1 inserted into the hole 11 is provided.
2 is fixed to the upper wall 10 by bolts 13. A pressure screw 14 is screwed into the nut 12, and a handle 16 for rotating the pressure screw 14 is inserted into a lateral hole 15 provided above the pressure screw 14. The tip of the small-diameter shaft portion 14a formed at the lower end of the pressure screw 14 is inserted into a hole 18 provided at the center of the pressing plate 17, and then a flange portion 14b is formed by plastic deformation. Therefore, the pressing plate 17 is rotatably fitted to the shaft portion 14a.

A cylindrical portion 18 extends from the lower surface of the pressing plate 17, and a female screw 18a is provided on the inner peripheral surface of the cylindrical portion 18. The spring case 19 has a peripheral wall 20 and a bottom wall 21 provided at a lower end of the peripheral wall 20, and a through hole 22 is provided in the bottom wall 21. A male screw 20 a screwed on the upper part of the outer peripheral surface of the peripheral wall 20 is screwed with the female screw 18 a of the cylindrical portion 18.

An elevating member 23 is provided inside the spring case 19.
Is inserted, and on the lower surface of the elevating member 23, a rod-shaped injection port pressing portion 24 to be inserted into the through hole 22 is provided. The diameter of the injection port pressing portion 24 is slightly smaller than the resin injection port 4 of the flask A. An injection port pressing spring 25 is inserted between the lifting member 23 and the lower surface of the pressing plate 17. Therefore, the elevating member 23 is urged downward, and the injection port pressing portion 2
4 project downward through the through hole 22.

Outside the spring case 19, a flask pressing spring 26 whose upper end is fixed to the lower surface of the pressing plate 17 is provided. An outer peripheral surface of a cylindrical portion 27a of a flask pressing member 27 is fixed to a lower end portion of the flask pressing spring 26, and an annular wall 27 protruding outward is provided at a lower end of the cylindrical portion 27a.
b is provided around. The inner diameter of the cylindrical portion 27a is large enough to allow the boss portion 4 of the flask A to fit loosely, and the lower surface of the annular wall 27b is the pressing surface of the flask A.

Next, the operation of the resin denture manufacturing apparatus C configured as described above will be described. Since the manufacturing apparatus C has only one pressurizing device at the center, the structure is simple. is there. After the resin is filled into the injection port 5 of the flask A placed on the mounting surface 7a of the base plate 7 of the manufacturing apparatus C, when the handle 16 is rotated, the pressing plate 17 is lowered and the pressing plate 1
Since the flask pressing spring 26 whose upper end is supported by the bottom 7 also descends, the flask pressing member 27 fixed to the lower end of the flask pressing spring 26 and the mounting table 7a of the base plate 7 press the upper and lower surfaces of the flask A. Therefore, there is no fear that a part of the flask A is lifted or the flask A is moved.

When the handle 16 is further rotated, the injection port pressing portion 24 is inserted into the resin injection port 5 and the resin injection port 5 is moved.
Since the resin in the inside is pressed, the resin fills the gypsum female mold, and sink of the resin is prevented. Therefore, the clamping operation and the pressing operation of the resin in the resin injection port can be performed only by the turning operation of the handle 16, and the operation is simplified as compared with a conventional resin denture manufacturing apparatus.

[0017]

[Effects of the Invention] The present invention is configured as described above, and has the following effects. (1) Since only one pressing device is provided at the center of the resin denture manufacturing apparatus, there is an advantage that the structure of the entire manufacturing apparatus is simplified and the size is reduced. (2) To manufacture a resin denture, the operation of one handle can clamp the flask and then press the resin injection port, which facilitates the operation of manufacturing the resin denture.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of an apparatus for manufacturing a resin denture.

FIG. 2 is an exploded perspective view of the flask.

[Explanation of symbols]

 Reference Signs List A flask B male mold C resin denture manufacturing apparatus 1 lower case 2 upper case 3 lid 5 resin inlet 7 base plate 7a mounting surface 8 gantry 10 upper wall 11 hole 12 nut 14 pressure screw 16 handle 17 press plate 18 Tube part 19 Spring case 20 Tube part 21 Bottom wall 22 Through hole 23 Elevating member 24 Inlet pressing part 25 Injection pressing spring 26 Flask pressing spring

Claims (1)

(57) [Scope of request for utility model registration] 1. A gate-shaped pedestal comprising two columns and an upper wall is erected on a base plate having a mounting surface on which a flask containing a female denture made of resin is placed. Then, a nut is fixed to a hole provided in the center of the upper wall, a handle is provided on an upper part of a pressing screw screwed to the nut, and a pressing plate is rotatably fitted to a lower end of the pressing screw. Then, a spring case having a peripheral wall and a bottom wall at a lower end of the peripheral wall, which is provided with a through hole in the bottom wall, is fixed to the lower surface of the pressing plate, and the elevating member and the elevating member are lowered in the spring case. An injection port pressing spring is urged toward the lower end of the elevating member, and an injection port pressing portion is provided at the lower end of the lifting member to protrude toward the resin injection port of the flask via the through hole. Provided with a flask pressing spring whose upper end is supported by the pressing plate and whose lower end forms a flask pressing surface. An apparatus for manufacturing a denture made of resin.