JP2811165B2 - Melt extrusion equipment for dental technics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for melt-extruding a wax for dental technics, and more particularly to a method for melting wax for dental technics which is useful for producing a wax denture using a wax as a heat-melted dental material. It relates to an extrusion device.

[0002]

2. Description of the Related Art Conventionally, in order to produce a braided tooth, generally, as shown in FIGS. 5A and 5B, a wax 2 in a pot 1 is spun with a spoon 4 or the like heated by a gas burner 3 or the like. Then, the wax 2 is heated and melted little by little, and the wax 2 is used to build a wax denture 50 on the model 5 to form a wax denture. A method in which the wax 2 inside the pot 1 is heated and melted by the wax heater 7 while the temperature is controlled, and the wax 2 which is heated and melted little by little by the wax spatula 8 with a heater is similarly produced to produce a wax denture. Has also been done.

[0003] However, these methods require a lot of time to prepare a wax denture, and the wax may be cooled, which may hinder the formation of the wax denture.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a technique capable of overcoming the disadvantages of the prior art. The above and other objects and novel features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

[0005]

According to the present invention, a heater for heating and melting the wax in the cylinder is provided outside a cylinder capable of being filled with wax for dental technics, and the heater is provided. And a plunger portion having a connecting rod and a plunger capable of pressing the wax heated and melted inside the cylinder portion and discharging the wax to the outside, above the cylinder portion. A plunger drive mechanism that allows the plunger of the plunger to move up and down inside the cylinder is connected to the connecting rod.The plunger is heated and melted inside the cylinder at the lower part of the cylinder. A nozzle portion capable of discharging the pressed wax to the outside is provided in series, and the connecting rod is connected to the connecting rod from the nozzle portion. A brake device for stopping the outflow of the wax is provided, and a control device capable of controlling the temperature of the wax and controlling the discharge amount of the wax discharged from the plunger portion to the outside of the nozzle portion is provided. The present invention relates to a wax extruder for dental technology.

[0006]

According to the above means of the present invention, while controlling by the control device, the plunger presses the dental technician wax in the cylinder heated and melted by the heater, and discharges the wax from the nozzle. Therefore, it is possible to quickly obtain a required and controlled amount that is controlled and controlled, and a brake mechanism is provided to completely stop the wax from flowing out of the nozzle portion by the brake operation. It is possible to obtain a required amount of wax with high accuracy and to suppress wasteful outflow of the wax. The temperature of the wax is controlled at an appropriate temperature by feedback from the temperature sensor unit, and the temperature of the temperature sensor is controlled. By the feedback from the part, it is possible to obtain the required amount of wax according to its molten state, It can be obtained wax dentures in a short time compared to come scheme.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a wax melt extrusion device for dental technics showing an embodiment of the present invention. As shown in FIG.
A heater section 10 is attached to the outer periphery of the cylindrical cylinder section 9. A temperature sensor section 11 is provided above the heater section 10. A nozzle portion 12 is provided continuously below the cylinder portion 9. The heater unit 10 and the temperature sensor unit 11 are electrically connected to a control device 13. FIG. 2A shows an example of a wiring diagram between the heater unit 10, the temperature sensor unit 11, and the control device 13. When the relay contact 15 of the power supply unit 14 inside the control device 13 is turned on, the heater unit 10 is heated via the magnet switch 16. When the temperature is detected by the temperature sensor section 11 and the temperature rises excessively, the relay contact 15 is activated, the heating of the heater section 10 is stopped, and by repeating these operations, and by feedback from the temperature sensor section 11, The temperature of the heater section 10 is controlled, and the wax 2 supplied into the cylinder section 9 is always kept at an appropriate temperature. FIG. 2 (B)
An example of a block diagram of the automatic control of the temperature is shown. A temperature control / operation unit 18 including a relay contact 15 and a magnet switch 16 is operated with respect to a temperature set value 17 so as to adjust the heating operation of the heater unit 10, A block diagram is shown in which feedback 19 from the sensor unit 11 to the temperature adjustment / operation unit 18 is performed to perform temperature control.

As shown in FIG. 1, a plunger section 20 is provided above the cylinder section 9. The plunger part 2
Numeral 0 has a rod-shaped connecting rod 21 and a cylindrical plunger 22 attached to the tip of the connecting rod 21. The outer diameter of the cylindrical plunger 22 is substantially equal to the inner diameter of the cylinder 9. A plunger drive mechanism 23 is connected to an appropriate position of the connecting rod 21 so that the plunger 22 of the plunger 20 can be moved up and down inside the cylinder 9 by the plunger drive mechanism 23. I do. The plunger drive mechanism 23 is constituted by, for example, a servo mechanism having a servo motor 24 and a gear mechanism 25 as shown in FIG. The gear mechanism 25 is composed of, for example, a worm gear drive mechanism 25A as shown in FIG.
In the above-described embodiment, an example is shown in which the plunger drive mechanism 23 is configured by a servo mechanism including the servo motor 24 and the gear mechanism 25. However, as shown in FIG.
The connecting rod 21 may be moved up and down by the hydraulic ram 25B, and may be changed as appropriate. As shown in FIG. 1, the plunger driving mechanism 23 is electrically connected to the control device 13.

The wax 2 is charged into the cylinder 9 with the plunger 22 of the plunger 20 pulled up above the cylinder 9, as shown in FIG.
The inside of the cylinder portion 9 is filled with an appropriate amount. The plunger 22 of the plunger section 20 is lowered and stored in the cylinder section 9. As described above, the heater unit 10 is heated. When the temperature reaches an appropriate temperature, the servo motor 24 is driven by the control device 13 and the speed is appropriately reduced and increased by the gear mechanism 25, and the plunger 22 of the plunger section 20 is moved.
Is lowered inside the cylinder portion 9. Plunger 22
Presses the heated and melted wax 2 inside the cylinder portion 9 and discharges the wax 2 to the outside through the nozzle portion 12. As described above, since the outer diameter of the plunger 22 is substantially equal to the inner diameter of the cylinder portion 9, the inside of the cylinder portion 9 has a negative pressure, and the plunger 22 is heated and melted on the inner wall of the cylinder portion 9. The wax 2 can be effectively pressed and discharged to the outside of the nozzle portion 12 by scraping off the wax 2. Control device 13
Controls the downward speed of the servo motor 24 in the downward direction of the connecting rod 21 in conjunction with the temperature sensor section 11, as shown in FIG. That is, when the temperature of the wax 2 is high, the flow becomes fast, while when the temperature is low, the flow of the wax 2 becomes slow. 24, the speed of descending the connecting rod 21 downward is reduced.
The descending speed of the connecting rod 21 by the servomotor 24 is increased. This makes it possible to control so that a desired amount of the wax 2 is discharged from the nozzle unit 12 to the outside. The control device 13 controls the temperature of the wax 2 and the plunger 2 as described above.
It is possible to control the discharge amount (delivery amount) of the wax 2 discharged from 0 to the outside of the nozzle unit 12, and further, as shown in FIG.
When the plunger 22 descends in the cylinder portion 9 and discharges most of the wax 2 to the outside, the position is detected, the plunger 22 is returned to the original position, and the cylinder portion 9 is filled with the wax 2 so that the above operation can be performed again.

By the above operation, a desired amount of the wax 2 can be appropriately obtained from the nozzle portion 12 and the brazing teeth 50 can be formed.
Even if the nozzle 4 is stopped, the wax 2 may still flow out of the nozzle portion 12, and in order to stop the wax 2 from completely flowing out of the nozzle portion 12, as shown in FIG. The connecting rod 21 is provided with a brake mechanism 27 for instantly stopping the outflow of the wax 2 from the nozzle portion 12. The brake mechanism 27 can be implemented, for example, in a form added to the control function of the servomotor 24. As a result, the descending of the connecting rod 21 can be stopped instantaneously to obtain a required amount of the wax 2 with higher accuracy, and it is possible to suppress wasteful outflow of the wax 2. The wax used in the present invention includes inlay wax, paraffin wax, sheet wax, stick wax, utility wax, and the like, and the wax material is paraffin, beeswax,
It consists of carnava wax, dammar etc.

Although the invention made by the inventor has been specifically described based on the embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the invention. Needless to say,

[0012]

The effects obtained by the representative ones of the inventions disclosed in the present application will be briefly described as follows. That is, according to the present invention, a controlled and required amount of wax can be obtained as needed, and a more precise and necessary amount of wax can be obtained by braking operation, and the waste of wax can be obtained. The wax can be kept at an appropriate temperature by controlling the temperature, the required amount of wax can be quickly obtained, and a wax denture can be obtained in a short time. Further, according to the present invention, when the plunger descends in the cylinder portion and discharges most of the wax to the outside, the position is detected, the plunger is returned to the original position, and the wax is returned to the cylinder portion again. And the above operation can be performed again, so that the supply of the wax is not hindered. The present invention is applicable not only to the preparation of the above-mentioned brazing dentures, but also to general dental techniques such as patterning of wax patterns such as inlays, casting crowns and metal floors using wax, and temporary attachment at the time of brazing.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a melt-extrusion apparatus for a wax for dental technology showing an embodiment of the present invention.

FIG. 2A is a wiring diagram relating to temperature control showing an embodiment of the present invention, and FIG. 2B is a block diagram of the control;

FIG. 3 is a control block diagram of a wax melt extruder for dental technics showing an embodiment of the present invention.

FIGS. 4A and 4B are configuration diagrams of a plunger drive mechanism showing an embodiment of the present invention, respectively.

FIGS. 5A and 5B are explanatory diagrams of a conventional example, respectively.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pot 2 ... Wax 3 ... Gas burner 4 ... Spoon 5 ... Model 6 ... Temperature control device 7 ... Wax heater 8 ... Wax spatula with heater 9 ... Cylinder unit 10 ... Heater unit 11 ... Temperature sensor unit 12 ... Nozzle unit 13 ... Control unit 14 ... Power supply unit 15 ... Relay contact 16 ... Magnet switch 17 ... Temperature set value 18 ... Temperature adjustment / operation unit 19 ... Feedback 20 ... Plunger unit 21 ... Connect rod 22 ... Plunger 23 ... Plunger unit driving mechanism 24 ... Servo motor 25 gear mechanism 26 position detection unit 27 brake mechanism 50 brazing teeth

Claims (4)

(57) [Claims] 1. A heater section capable of heating and melting said wax in said cylinder section is provided outside of a cylinder section which can be filled with dental technic wax, and a temperature sensor section is provided in said heater section. A plunger portion having a connecting rod and a plunger capable of pressing the wax heated and melted inside the cylinder portion and discharging the wax to the outside is installed on the upper portion of the cylinder portion, and the plunger of the plunger portion is provided. A plunger unit driving mechanism that can move up and down inside the cylinder unit is connected to the connecting rod, and the wax that is heated and melted inside the cylinder unit and pressed by the plunger unit is externally provided at a lower portion of the cylinder unit. A nozzle part that can be discharged is connected in series, and the wax outflow from the nozzle part to the connecting rod is stopped. A brake mechanism for controlling the temperature of the wax and an amount of the wax discharged from the plunger portion to the outside of the nozzle portion. Wax melt extrusion equipment. 2. The wax melt extruder for dental technology according to claim 1, wherein the plunger drive mechanism is constituted by a servo mechanism including a servo motor. 3. The apparatus for melt-extrusion of dental technology according to claim 1, wherein the outer diameter of the plunger in the plunger portion is substantially equal to the inner diameter of the cylinder portion. 4. The plunger portion is configured to automatically move upward after discharging the wax from the nozzle portion to the outside, and to refill the cylinder portion with the dental technician wax. 2. The apparatus for melt-extruding wax for dental technology according to 1.