Abstract

This washing device for dentistry vessels is a washing device for washing off plaster and investment compound (residue) adhering to vessels used in the field of dentistry. The washing device of the present invention is provided with: an air nozzle (11), which is connected to an air supply source and jets air from the tip; a holding means for holding a vessel to be washed (20) with the opening of the vessel to be washed (20) facing downwards; and a securing member (14), which is a placement means for placing the air nozzle (11) facing upwards at a position below the vessel to be washed (20) in a washing vessel (21) in which a washing solution (22) is pooled.

IPC Classes  ?

• A61C 19/00 - Dental auxiliary appliances
• A61C 13/38 - Tools not otherwise provided for, for use in connection with dental prostheses or the making thereof
• B08B 3/02 - Cleaning by the force of jets or sprays

Abstract

When a flask (65) in which a mold is formed and a tube (63) filled with resin are mounted, a table (25) is raised by the driving force of a motor (11), and the upper end of the tube (63) is fitted into a holding hole (38) of a tube guide (37). The diameter of the bottom opening of the holding hole (38) is large and its inner diameter decreases toward the top. Therefore, even if the tube (63) is slightly inclined, its posture is corrected while the tube is raised, and the tube is held upright from the upper and lower sides. Thus, the pressurization performed by lowering a piston rod (33) can be reliably carried out. When the inclination of the tube (63) mounted on the flask (65) is large, the table (25) is not raised to the top dead center. In this case it is necessary to lower the table (25) and signal the worker that a failure has occurred.

IPC Classes  ?

• A61C 13/14 - Curing devices for plastics prostheses
• A61C 13/007 - Prostheses with bases, e.g. palates or platesMaking same
• A61C 13/01 - Bases

Abstract

When a fitting projection of a stirring shaft of a stirring container is engaged to a fitting recess of a drive shaft of a suction section after the start of operation is instructed, the drive shaft is rotated at a low speed, both shafts are connected, and stirring blades starts to rotate by the stirring shaft at a low speed. This causes vacuum drawing of the container to start and air pressure in the container starts to drop. When a pressure detection value reaches a threshold (P1) and a state where the container is reliably sucked to a suction section by negative pressure is achieved, the rotation of the stirring section stops temporally. By this, a worker can know the exact timing when they can release the hand. Further, when the air pressure in the container is reduced up to a threshold (P2) by the vacuum drawing, the drive shafts start to rotate to start mixing and kneading by substantial stirring. Because the stirring starts after a sufficiently high degree of vacuum is achieved, air entrainment is reduced and production of bubbles is reduced. Bubbles occurring in an oozy investment material after the kneading are reduced and workability is increased.

IPC Classes  ?

• A61C 13/20 - Methods or devices for soldering, casting, moulding or melting
• B01F 7/00 - Mixers with rotary stirring devices in fixed receptacles; Kneaders
• B01F 7/32 - Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a vertical axis with openwork frames or cages
• B01F 13/06 - Mixers adapted for working at sub- or super-atmospheric pressure

Abstract

The rotation speed and rotation direction of a stirring blade are associated with the angle and direction of rotation operation of a shuttle dial (31d) rotatable in the left-right directions. In setting an operation program, a control section (30) causes the stirring blade to rotate by controlling a motor (18) in real time so that the motor (18) is associated with the amount of rotation operation and rotation direction of the shuttle dial (31d). A worker performs kneading work by actually using an investment material and operating the shuttle dial (31d), and while visually confirming conditions of the kneading, the worker adjusts the operation of the shuttle dial (31d) to set a parameter that forms the operation program. The parameter is stored in a course program storage section (34) in a manner associated with a course. When the worker presses a start key (31a) after selecting a course by a course selection key (31c), an operation program corresponding to the selected course is read and the stirring blade rotates according to the operation program. Thus, an operation program can be easily set.

IPC Classes  ?

• A61C 13/20 - Methods or devices for soldering, casting, moulding or melting
• B01F 7/00 - Mixers with rotary stirring devices in fixed receptacles; Kneaders
• B01F 13/06 - Mixers adapted for working at sub- or super-atmospheric pressure