JPS63153059A - Wax build-up molding apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a wax build-up molding device used when forming a denture model using dental wax on a jaw model taken from a patient.

<Prior art> In general, wax build-up molding work in dental technology involves first warming a spatula to soften or melt the solid wax and scooping it out, then heating it again to make it liquid, and then mounding it onto the part to be molded. , normal - I per tooth
O is repeated several times.

Traditionally, each time this work was performed, the technician's viewpoint would shift away from the part to be molded, making it difficult to concentrate on the work.
It had become extremely inefficient.

The present inventor previously proposed an invention related to Japanese Patent Application No. Sho 61-106195 in order to deal with such problems. This is shown in FIG. In the same figure, with the wax melting part 2 and the molding part 3 heated to about 100°C by the heater 1, the dental wax rod 5 is moved forward by rotating the rubber roller 4 with your fingers, and the tip of the dental wax rod 5 is transferred to the wax melting part 2. and melt it. The melted wax flows downward along the wax melting section 2 and stays in the molding section 3. This stagnant molten wax is poured into the molded part from the tip or periphery of the molding part 3. Reference numeral 6 indicates a gripping portion, and reference numeral 7 indicates an electric cord for supplying power to the heater 1.

<Problems to be Solved by the Invention> In the structure of the prior art described above, the wax rod 5 softens due to conductive heat and radiant heat from the heater 1 or due to room temperature in summer, but maintains its shape. The roller 4 is in a state where it is easily deformed by the slightest external force.
Due to the pressure that is constantly applied to it, it can become deformed. That is, the roller 4 is made of rubber, and another auxiliary roller (not shown) is arranged opposite to this roller 4, and the wax rod 5 is elastically clamped and transferred between this pair of rollers. However, when the wax rod 5 becomes soft, it is crushed by the elastic force of the roller 4, deformed or bent, and comes out in front of the gripping portion. When the wax rod 5 is crushed and deformed, the elastic clamping force by the rollers 4 is lost, causing the rollers 4 to rotate idly, or the wax coming into contact with and adhering to the wall surface of the through hole of the gripping part 6, which prevents the transfer of the wax rod 5. This problem may occur.

Further, when the wax rod 5 bends due to the force exerted by the roller 4, the tip of the wax rod 5 is shifted from the center of the wax melting section 2, causing a problem that the wax is not melted.

The present invention was made in view of the above circumstances, and when lowering the wax rod, the wax rod is deformed,
To realize a wax build-up molding device that can transfer wax without applying any external force that causes bending, and when the wax rod is forcibly transferred, by applying an external force to the wax rod only during that operation. It is.

Means for Solving Problems〉 The wax build-up molding device according to the present invention includes a rope having a first through hole through which a wax rod is inserted and descends, and a first opening bored in the wall surface of the first through hole. The grip has a long cylindrical shape, a second through hole that is housed in the first through hole, through which the wax rod is inserted and descends, and a slider that is exposed on the surface of the grip through the first opening. and an operating section that is movable back and forth within the first through hole according to the slide photographing operation, and is attached to the operating section so that its upper surface protrudes onto the surface of the operating section and its lower surface faces the second through hole. , a pressing body that is elastically biased toward the surface of the gripping part and whose lower surface protrudes into the second through hole only when pressed; a dish-shaped molded part fixed to the tip of the gripped part; one end of the molded part is a wax melting part that is fixed and whose other end is above the molding part and protrudes on the line in the descending direction of the wax rod; a heater that heats the wax melting part and the molding part; a tip of the wax melting part that is supported by the operating part so as to be movable back and forth; is provided with a stop member located between the tip of the gripping portion and the wax melting portion and locking the tip of the wax rod, and by moving the slide of the operating portion forward or backward, the stop member is moved. By controlling the advance or retreat to bring the tip of the wax rod into contact with or away from the wax melting part, and by advancing the slide camera while pressing the pressing body, the lower surface of the pressing body and the second penetration are moved. The wax rod is sandwiched between the wax rod and the bottom surface of the hole, and the wax rod is forcibly moved forward.

<Function> As shown in FIG. 2, when this device is held diagonally with a finger placed on the slide 16 of the operating section 14, the gripping section 10 and the first and second through holes 11 of the operating section 14 The wax rod 5 inserted into the .15 lowers under its own weight. The wax rod 5 that has descended is stopped by being stopped by the tip of the stop member 22.

When you push the slide camera 16 forward with your finger (in the direction of arrow a),
The stop member 22 also moves forward due to the weight of the wax rod 5;
The tip of the wax rod 5 comes into contact with the wax melting section 20, and as a result, the tip of the wax rod 5 comes into contact with the wax melting section 2o, and the wax melts, flows down to the molding section 19, and stays there. FIG. 4 shows the position of the operating section 14 in such a state. When the amount of melted wax reaches a predetermined amount, the slider 16 is moved back with a finger. In this way, the stop member 22 is moved backward as the hook 24 is hooked on the rear end of the slide camera 16, and the tip of the wax rod 5 is separated from the wax melting section 20, and the wax stick 5 is moved away from the wax melting section 20. Melting stops.

If it is desired to rapidly melt the wax, the procedure is as follows. That is, as shown in FIG.
is advanced, and at the position where the stop member 22 contacts the wax melting part 20, press down the pressing body 17 with your finger, press its lower surface against the wax rod 5, and insert the wax rod 5 between it and the bottom surface of the second through hole 15. to hold. Thereafter, by pushing the finger forward (in the direction of arrow a), the wax rod 5 is pushed forward together with the operating section 14, and is forcibly pressed against the wax melting section 2o. As a result, the wax rod 5 is rapidly melted. During such operation, the stop member 22 stops the wax melting section 20
Keep it in contact with. To stop the wax melting, it is sufficient to move the slide camera 16 backward while pressing the pressure body 17. Then, release your finger from the pressure body 17, move the slide camera 16 backward, and accordingly. The stop member 22 is moved backward to lock the tip of the wax rod 5 to the tip of the stop member 22.

<Embodiment> In FIGS. 1 to 4, reference numeral 10 denotes an elongated cylindrical grip made of plastic and has a first through hole 11 that coincides with the central axis. 12 is a first opening formed in the wall surface of the first through hole 11 near the front end of the gripping part 10;
is the large diameter portion of the through hole formed in the portion of the first through hole 11 where the first opening 12 is located. Reference numeral 14 denotes an operation unit housed in the large-diameter through-hole portion 13, which has a second through-hole 15 along the central axis and a slide camera 16 exposed on the surface of the grip portion 10 from the first opening 12. . Also, the large diameter part of the through hole 1
3 is longer than the length of the operating section 14, and the first opening 12
is longer than slide shot 16. Therefore, the operating portion 14 can be slid back and forth within the large diameter portion 13 of the through hole and the first opening 12.

The inner diameter of the second through hole 15 is equal to or slightly smaller than the inner diameter of the first through hole 11. 5 is a wax rod inserted into the first and second through holes 11.15;
It has a diameter slightly smaller than the inner diameter of the through hole 15. 17
is attached to the operating section 14, and its upper surface is attached to the operating section 14.
A pressing body that slightly protrudes from the surface of the slide camera 16 and whose lower surface faces the second through hole 15, and is supported so as to be movable up and down at a predetermined distance (approximately 21 cm) within the operating section 14. and is always elastically biased upward by a spring 18. When no pressing force is applied to the pressing body 17 from above, its lower surface is in a position retracted from the second through hole 15, whereas when a pressing force is applied, its lower surface is retracted from the second through hole 15. Protrudes into 15. As the pressing body 17 protrudes into the second through hole 15, the wax rod 5 is held between the lower surface of the pressing body 17 and the bottom surface of the second through hole 15. It is preferable that the lower surface of the pressing member 17 is made of a rubber member to provide elasticity and is circular to match the shape of the wax rod 5.

Reference numeral 19 denotes a molded part located in front of the gripping part 1O, and is configured in a dish shape. Reference numeral 20 denotes a wax melting part whose one end side is fixed to the shaped part 19 and whose other end side is above the molded part 19 and projects on the line in the descending direction of the wax rod 5. The wax melting part 2o and the molding part 19 are integrally formed of a metal with good thermal conductivity such as copper, brass, nickel-chromium alloy, cobalt-chromium alloy, or the like. 21 is a heater embedded in the wax melting part 20, and a ceramic heater or the like can be used. This heater 21 heats the wax melting section 20 and the molding section 19 to about 100°C. Furthermore, the heater 21
The heating temperature is approximately 80℃ depending on the wax material.
The temperature is set within a range of from 120°C to about 120°C.

Reference numeral 22 denotes a stop member made of an abbreviated wire that is supported so as to be slidable back and forth in the small hole 23 of the operating portion 14, and has a hook portion 24 at the rear end. This stop member 22 passes through a small hole 25 formed in the grip part 10 and extends forward of the grip part 10, and locks the tip of the wax rod 5 between it and the wax melting part 20 to stop its descent. . 26 is a heat sink,
It is made of a high-strength metal such as stainless steel, and one end thereof is fixed to the tip of the gripping part 10, and the other end is curved upward in an inverted U shape and fixed to the upper end of the wax melting part 20.

A lead wire (not shown) for supplying power to the heater 21 is housed within the heat dissipation tube 22 . This lead wire passes through the grip portion 10 and is connected to the cord 7.

Next, a method of using the apparatus having the above configuration will be explained.

As shown in FIG. 2, with the slide camera 16 retracted, the wax rod 5 is inserted from the rear end of the first through hole 11.

When the device is held diagonally or vertically with the rear end of the gripping portion 10 facing up, the wax rod 5 descends under its own weight and enters the second through hole 15.
The stop member 22
It hits and stops. In this state, the stop member 22 is
Since it is spaced apart from the wax melting section 20, wax melting is not performed. When the slide camera 16 is pressed with a finger to move the operating section 14 forward, the stop member 22 also moves forward due to the weight of the wax rod 5 and comes into contact with the wax melting section 20 .

The position of the operating section 14 is shown in FIG. This initiates melting of the wax.

The melted wax flows down along the wax melting section 20 and stays in the molding section 19. As the wax rod 5 is consumed, it descends, and its tip is always in contact with the tip of the stop member 22. In order to accelerate the descent of the wax rod 5, a cylindrical weight having approximately the same diameter as the wax rod 5 may be fixed to the rear end of the wax rod 5, and the weight may be utilized. When the desired amount of wax has accumulated in the forming part 19, the slider 16 is moved back, and the stop member 22 and the wax rod 5 are moved back.
The wax rod 5 may be moved away from the wax melting section 20 by retreating. The wax remaining in the molding part 19 is poured into the part to be molded, and a build-up molding operation of the denture model is performed.

When a large amount of wax is to be rapidly melted during wax build-up molding, as shown in FIG.
7 with a finger (arrow b), and in this state further advance the slide camera 16. In this way, the wax rod 5 is held between the pressing body 17 and the operating section 14, and
It is transferred forward and pressed against the wax melting section 20. As a result, the amount of melted wax increases rapidly. Thereafter, when the slide camera 16 is moved backward while the pressing body 17 is being pressed, the wax stick 5 is moved back and melting of the wax is stopped. When the slide camera 16 is moved further backward, the hook portion 24 at the rear end of the stop member 22 hits the rear end of the slide camera 16, causing it to move backward. The state then returns to the initial state shown in FIG.

5 and 6 show another embodiment of the present invention, in which a stop member 22'' is supported so as to be movable back and forth only on the side of the grip 10. That is, the stop member 22'' is
It is made to penetrate into a small hole 27 formed at a position adjacent to the first opening 12 of the slider, and only the hooking part 28 at the rear end protrudes into the first opening 12 and is configured to be hooked on the rear end of the slide camera 16. There is.

In such a configuration, the slide photographing 16 is performed using the first aperture 12.
When advanced from the rear end position, the stop member 22'' moves forward as it descends due to the weight of the wax rod 5, and stops when it hits the wax melting part 20. Thereafter, with the pressing member 17 further pressed, the slide photographing 16 When the wax rod 5 is moved forward, the wax rod 5 is forcibly pressed against the wax melting part 20. During this operation, the hook 28 of the stop member 22' separates from the rear end of the slide camera 16. Therefore, the slide camera The operation of the stop member 16 has no effect on the stop member 22°.In this regard, in the embodiment described above, the stop member 22°
2' passes through the inside of the operating section 14, so the stop member 22
If the "" is slightly curved, it will come into contact with the wall surface of the small hole 23 and move as the operating part 14 moves.
In this example, there is no possibility that such a problem will occur.

<Effects of the Invention> According to the present invention, during normal wax build-up molding work, the wax rod descends under its own weight, comes into contact with the stop member, and stops. Therefore, by moving the slider back and forth and bringing the tip of the stop member into contact with or away from the wax melting portion, it is possible to melt the desired amount of wax. This means that no external force is applied to the wax rod that would deform it, and even if the wax rod is softened by conduction and radiant heat from the heater or at room temperature and deforms even with a slight force. The original straight cylindrical shape is maintained, the wax rod descends smoothly into the first and second through holes, and the wax can be melted quickly.

Further, according to the present invention, when it is desired to rapidly melt the wax, the wax rod is held between the lower surface of the pressing body attached to the operating section and the bottom surface of the second through hole of the operating section, and the pressing body attached to the operating section is pressed down. As you move the wax stick forward,
It is possible to minimize the application of local external force to the wax rod, and it is possible to transport the wax rod without causing deformation.

Furthermore, normally this type of wax undergoes deterioration and deterioration when heated and molten for a long period of time, but according to the present invention, the wax is heated and melted immediately before molding, so that such deterioration and deterioration of the wax occur. This problem does not arise.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a wax build-up molding apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line I-1 in FIG. 1, and FIG.
FIG. 1 is a cross-sectional view taken along the line T, FIG. 4 is a cross-sectional view showing the pressing state of the pressing body, FIG.
The figure is a perspective view showing a stop member used in the same example, and FIG. 7 is a perspective view for explaining the prior art. 5... Wax stick 10... Gripping part 11.
...First through hole 14...Operation section 15...Second through hole 16...Slide photographing 17...Press body 19...Molding section 20...Wax melting section 21... Heater 22.22'...stop member

Claims (1)

[Claims] (1) an elongated cylindrical-shaped grip having a first through-hole into which the wax rod is inserted and descends, and a first opening bored in the wall surface of the first through-hole; housed in the first through-hole; a second through hole through which the wax rod is inserted and descends;
an operating section that has a slide exposed on the surface of the gripping section from the opening and is movable back and forth within the first through hole by the operation of the slide; a pressing body that protrudes from the surface of the body, has a lower surface facing the second through hole, is elastically biased toward the surface of the gripping part, and has a lower surface that protrudes into the second through hole only when pressed;
a dish-shaped molded part fixed to the tip of the gripping part, a wax melting part whose one end is fixed to the molded part and whose other end is on the molded part and projects on the line in the descending direction of the wax rod; a heater that heats the molding section; a stop member that is supported by the grip section so as to be movable back and forth, the tip of which is located between the tip of the grip section and the wax melting section, and that locks the tip of the wax rod; , by moving the slide of the operating section forward or backward, the forward or backward movement of the stop member is controlled, the tip of the wax rod is brought into contact with or separated from the wax melting part, and the pressing body is pressed. Wax build-up molding characterized in that the wax rod is held between the lower surface of the pressing body and the bottom surface of the second through hole by moving the slide camera forward, and the wax rod is forcibly moved forward. Device