JP2001187072A - Recycling container of spent paraffin and apparatus for recycling the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively put resources to practical use, to contribute to a reduction in a consumption cost and to also contribute to an environmental preservation by providing a recycling container capable of being recycled in a shape of a reusable object from a spent paraffin discarded heretofore by one time use or generated as a scrap, and an apparatus for recycling the same. SOLUTION: A molding of a paraffin is easily breakable and is fixed to all materials. Accordingly, the recycling container is made of a rubber-like material and the container is taken out so as to peel the container from the molding. Thus, the breakage of the molding is prevented. The container capable of being recycled in an object shape and a heater for melting the paraffin and heating the container constitutes, the apparatus for recyling the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for regenerating paraffin used for various types of modeling including dental use, and relates to a method for reusing scrap materials and used paraffin which have been discarded in a single use. The present invention relates to a regeneration container for enabling the process and a regeneration molding device.

[0002]

2. Description of the Related Art As an example of the use of paraffin, for industrial use, there is a casting method known as a lost wax manufacturing method.
In the medical field, it is used in dental care.
It is used for slimming and hair removal. At home, there are uses for candles and solid fuels, all of which are not reused and are discarded after use.

[0003] In the following, the case of paraffin used in the field of dentistry will be explained. Paraffin is mainly used by general dentists, technician schools, etc., and depending on the use, paraffin, plate shape, horseshoe shape, rod shape, etc. There are various types of molded products on the market, such as different shapes, thicknesses, and sizes, and differences in melting point and hardness. These paraffins are used in the process of making dentures. At present, the materials used once and the offcuts produced during the manufacturing process are not suitable for reuse due to the collapse of the standard shape, and all materials due to the nature of paraffin At present, it is difficult to regenerate the resin into a fixed form due to the good fixation and the good wettability. Therefore, it is not reused and is discarded after use.

[0004] Paraffin is an olefin-based material, generally known as candles, which is produced by refining and extracting heavy oil and natural gas, and is an organic material containing carbon and hydrogen as components.
Although this material can be reused for solid fuels, etc., dental materials contain additives such as fragrances and pigments, so they are not reused, and the economics of regeneration and the recovery system are low. Although it has not been established, it is incinerated as a combustible material.However, from the viewpoint of effective use of resources and suppression of environmental destruction such as global warming caused by carbon dioxide generated during incineration, the effective use of resources It is necessary to establish a recycling method.

On the other hand, dental paraffin is expensive, and a polyethylene molding material of a homologous olefin resin is about 130 yen / kg in the current international market, whereas the price of a commercially available standard dental paraffin plate is 3 yen. , 000-15,000
It is sold at a price of 0 yen / kg, and although it is a molded product, it is an expensive material with a price difference of about 30 to 120 times. Therefore, the recycling and reuse of this material is of sufficient value.

As described above, one of the reasons why reproduction and reuse are not generally performed is that reproduction is difficult. Paraffin is in close contact with the container and cannot be easily removed, and has good wettability to all materials, that is, because the contact angle is small,
When the boundary surface with the container rises at an acute angle and is reproduced in the form of a thin sheet, the predetermined thickness does not become uniform,
The lack of ease of manufacture is the reason for preventing reuse. Paraffin has a lower density than water and has a melting point of 50 to 60 ° C. Therefore, there is a method of regenerating paraffin by floating it in hot water of about 80 ° C. However, since paraffin contains water with bubbles, it is reused. Insufficiency is one of the reasons for preventing reuse.

[0007]

At a dental care site, there is a use amount of fixed paraffin products corresponding to at least the number of patients, and expenses are collected as patient burden. On the other hand, at a technician's school, a considerable amount of material is required to acquire a technician and obtain a license, but the standard dental paraffin molding material on the market is expensive, which imposes an economic burden on students. Large and deformed due to failure during practice cannot be reused, so they have to be discarded, resulting in higher costs.

On the other hand, as a social problem, measures to halt the increase in medical expenses have been called for. Aging is also a factor,
There are many factors, such as problems with the medical system, increased depreciation expenses due to the sophistication of medical equipment, and increased consumables. From this perspective, it is necessary to establish a safe and sanitary recycling system in this field as part of reducing medical costs, but the improvement of this system has been delayed for sanitary reasons. is there. However, also in the medical field, there are reusable resources, and in the field of dental care, as described above, paraffin can be recycled, and even if used, it is sanitary because it is heated and melted during the regeneration process. . In particular, if students can regenerate and mold at the technician school, the economic burden will be reduced, sufficient training can be done without hesitation, proficiency will be improved, technical learning period will be shortened, and tangible and intangible effects will be achieved. There is.

[0009] The present invention solves the problems of the conventional mechanism of disposing of paraffin as described above, and enables the reuse of used or discarded paraffin as scrap material. Is the primary purpose.

A second object of the present invention is to provide a regenerating container which can heat a regenerating container, melt solid paraffin directly in the regenerating container, and take out the molded product without damaging the molded product. A third object of the present invention is to provide a regenerative container that solves the problem that the paraffin has a small contact angle with any material, so that an acutely convex uneven wall thickness is formed on the entire periphery of the contact wall with the regenerative container.

[0011] The three-dimensional paraffin molded product can also be used to recycle a complicated three-dimensional shape by injecting molten paraffin into a closed reclaimed container, but the molten paraffin expands in volume and contracts when cooled. The fourth object is to provide a recycled container that solves the problem that the material is insufficient and a predetermined shape cannot be obtained, and a three-dimensional molded product is formed by trapping air at the apex of the molded product. A fifth object of the present invention is to provide a recycled container that solves the problem that it cannot be molded into a predetermined shape due to insufficient filling.

In the case of a paraffin molded product having a three-dimensional shape and a shape having a flat surface on one surface, if this is molded as an open upper surface, the flat surface of the molded product is reduced due to displacement due to volume shrinkage and a small contact angle. The sixth object of the present invention is to provide a regeneration container that solves the problem that it cannot be regenerated into a predetermined shape due to a concave shape, and the molten paraffin flows out of the regeneration container to the outside, and there is a problem that the material is insufficient or the surroundings are soiled. The seventh and eighth objects are to provide a recycling container that solves the above.
A seventh object is to form a mating surface of the regeneration container on the upper surface of the regeneration container, and an eighth object is to provide a convex step on the outer periphery of the upper surface of the regeneration container.

Further, according to the reclaiming container which achieves the above items, the reclaiming container has a plurality of horizontal adjusting legs capable of adjusting the level of the reclaiming container in order to form end pieces of various shapes and used paraffin into a desired shape. A ninth object is to provide a heating and reproducing apparatus.

[0014]

Means for Solving the Problems Paraffin molded products are:
There are various shapes depending on the application, and as mentioned above, in addition to the small contact angle of paraffin and the property of sticking to everything, it is a material that is easily broken and deformed at room temperature, making it difficult to regenerate paraffin. ing. Therefore, the present invention has been devised so that remnants and used paraffin can be reused. The first means is to use a rubbery flexible material to take out the molded product without damaging it. Provided is a recycling container that is made of a suitable material, is deformed and peeled off from the molded product, and the opening surface of the recycling container is located above the molded product so that molten paraffin does not flow out, and can be molded into a desired shape. The goal is achieved by doing.

When the used paraffin is molded into a desired shape in this reclaimed container, it is higher than the melting point and once
It is necessary to maintain the temperature at a temperature exceeding ° C to remove moisture and bubbles contained therein. At this time, if the opening surface of the regeneration container or the mating surface of the divided regeneration container is located at the same level as or below the upper end of the molded product, residual moisture does not escape, and paraffin flows out due to good wettability, Since the material cannot be formed into a predetermined shape due to a shortage of material, the opening surface of the recycling container is positioned above the molded product.

For example, a paraffin molded product used in a dental care site may be a sheet, a rod, a string, a horseshoe, or the like.
There are various standard shapes such as upper and lower jaws. Two large and small standard dimensions are mainly used for the sheet-shaped molded product, one of which is 85 mm wide, 170 mm long and 1.6 mm thick, and the other is 75 mm wide, 145 mm long and 1. 4 mm. This sheet can be used alone or by stacking multiple sheets.
Warm to the softening point and mold the teeth. In actual use, the above-mentioned standard sheet is cut into a required size using a knife, scissors, or the like. This is because such a process is not possible on site, but according to the present invention, such a process is not required, and a molded product having a shape and dimensions suitable for the actual situation at the medical site is manufactured on site. it can.

[0017] Such a sheet-shaped molded article is heated and melted and solidified only by placing a predetermined amount of solid paraffin on the regeneration container, if the regeneration container having the concave portion of the sheet size is heated while being kept horizontal. It can be molded to the shape and size of Therefore, there is no need to melt and inject the paraffin into the regenerating container, it can be easily molded at the medical site, and the used paraffin and remnants can be regenerated many times. As described above, it is also possible to place the paraffin directly on a regeneration container having an open top surface in a solid state and heat the regeneration container to melt and mold the solid paraffin.

The second means of the present invention is that a rubbery flexible regenerating container is made of a heat-resistant material such as silicon rubber or fluorine rubber, so that even if the regenerating container is heated, thermal deterioration and deformation occur. Without rubber material odor transfer, plasticizer,
There is no elution of vulcanizing materials and no hygiene problems. In particular,
When used in dentistry, it must be hygienic, so the heat resistance of the recycled container and the hygiene of the materials are necessary requirements.

The third means of the present invention is a means for solving the problem caused by the contact angle between paraffin and the regeneration vessel. For example, in the case of sheet-shaped regeneration molding, when molded in a box-shaped concave regeneration container, paraffin swells along the four sides of the wall, and an acute convex uneven thickness portion is formed over the entire circumference, and a desired uniform thin plate is formed. Cannot be molded. Therefore, the paraffin does not have a wall that rises by the fourth means, so that a uniform thin plate can be molded. By providing a step equal to or less than the thickness of the molded product outside the desired shape, this paraffin is formed. The problem has been solved. If a predetermined amount of paraffin is melted and solidified in this regenerating vessel and divided by this step, a flat thin plate without uneven thickness can be formed.

The fourth means of the present invention is a three-dimensional shape reproducing means. If the molded product has a three-dimensional shape, the regeneration container is divided and combined, a three-dimensional shape is formed inside, an injection port is provided, and the melted liquid paraffin is poured, so that the voids in the regeneration container are filled with paraffin, resulting in complicated Recyclable molding is possible even with a three-dimensional shape, but the material becomes insufficient due to shrinkage when the paraffin cools and solidifies, so the injection port is arranged above the molded product and molten paraffin is molded to compensate for the volume shrinkage By providing a pool of paraffin with a large inlet so that it does not solidify before the product,
It keeps the pressure of the material and the supply of the material to the inside molded product, preventing the material shortage.

A fifth means of the present invention is to eliminate molding defects by providing a plurality of small holes for allowing air to escape. In the case of complex three-dimensional shape molding, molten paraffin is injected into the cavity of the regeneration container divided into a plurality of pieces, but if the structure is such that air is trapped at the top of the molded product at the top of the regeneration vessel, this The portion is not filled with the material, and a defect called a so-called short mold occurs. Therefore, when a small hole penetrating to the outside is provided in this air reservoir portion, air is pushed out by the injected paraffin, the material is filled to every corner, and the defect of short molding can be eliminated.

The sixth means of the present invention is a means for accurately reproducing a plane when the molded product has a plane. In general, when there is a flat part of a molded product, if the molded product and the recycled container are molded to be flush with each other by opening the upper surface of the reclaimed container, there is no problem due to the contact angle for the same reason as the above-mentioned third means. However, the problem that the surface expands and contracts when it solidifies due to the volume expansion cannot be solved, and an accurate plane cannot be reproduced. Therefore, in order to accurately reproduce the flat portion, the flat portion is arranged inside the regenerating container, and a means for reproducing the flat portion on the wall of the regenerating container is used.

The seventh means of the present invention is a means for preventing the outflow of molten paraffin and molding defects, combining a regenerating container having a divided structure, and forming the mating surface on the upper surface of the regenerating container. Shrink when paraffin cools and solidifies,
This prevents air from being drawn into the gap filled with the molded product and causing molding defects. The eighth means achieves the object by forming a step such as a convex or concave groove on the outer periphery of the upper surface of the regeneration container to prevent outflow.

According to a ninth aspect of the present invention, a heating device for heating a regenerating vessel constituted by any one of the first to eighth means enables melting and molding of paraffin. This is a means for enabling uniform regeneration molding by providing a horizontal adjusting leg for holding the regeneration container horizontally. A general heating device does not have a horizontal adjustment function, and when the regenerating container of the present invention is used in a general heating device, the regenerating container cannot be kept horizontal, and when a sheet-like thin plate is molded, a uniform thickness molding is performed. Can not. Therefore, by providing a heating device having a plurality of horizontal adjustment legs at the bottom, regardless of the inclination of the work table, it can be kept horizontal,
It enables homogeneous regeneration molding.

The heating device may be a hot plate system or an oven system, but the temperature distribution is important. Since a general heating device has a problem that the temperature distribution is not uniform and the paraffin in the regeneration container according to the present invention is not uniformly melted, the uniformity of the temperature distribution is an important requirement. The hot plate method preferably has a distribution of the effective heating surface within ± 5 ° C., and the oven method preferably has a hot-air stirring method and has a function of displaying the actual temperature. Further, in order to adjust the horizontality, it is preferable to provide a level in the body to be visually recognized.

[0026]

The first means of the present invention is to make the recycle container a rubber-like flexible body, thereby separating the recycle container from the paraffin molded product, and the opening surface of the recycle container is positioned above the molded product. This has the effect of preventing the outflow of molten paraffin.

A second means of the present invention is to provide a regenerative container provided with heat resistance and hygiene by using silicone rubber or fluorine rubber, and to allow the regenerative container to be sufficiently heated so that paraffin is filled to every corner. In addition, it has an action of preventing solidification of paraffin in the middle due to insufficient heating, a sterilizing action by sufficient heating, and an action of simultaneously removing mixed water and bubbles. In addition, the third means works to eliminate the influence of the contact angle by a step equal to the thickness of the molded product, and both the second and third means work to enable high-quality reproduction molding. You are.

The fourth means is to provide an injection port at the upper part of the regenerating container and also to use a paraffin pool to press the molded product by utilizing the difference in potential energy.
Fifth means has a function of allowing air and moisture to escape outside through a plurality of small through holes near the top of the molded article. In this case, it is possible to reproduce an accurate plane portion without being affected by heat shrinkage. Further, the seventh means has a function of preventing paraffin from flowing out of the dividing line by arranging a combination dividing line of the regeneration vessel divided into a plurality of pieces on the upper surface of the regeneration vessel, and the eighth means, By providing a step on the outer periphery of the upper surface of the regeneration vessel, even when an extra amount of paraffin is injected, it is prevented from flowing out of the regeneration vessel. It works to prevent shortage.

A ninth means of the present invention is to provide a heating device capable of heating a regenerating vessel and melting paraffin with a plurality of horizontal adjusting legs so as to make the thickness of a molded product uniform. In operation, this heating device has the function of fully exerting the functions of the first to eighth regeneration vessels.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a paraffin regenerating container of the present invention and a regenerating apparatus using the regenerating container according to a first embodiment will be described in detail with reference to the attached drawing 1. FIG.
It is an example of a hot plate type regeneration molding apparatus for used paraffin according to the present invention. A regeneration container 1 for molding a sheet-like paraffin thin plate, a regeneration container 2 for molding a three-dimensional shape, and a pot 3 for melting paraffin are placed on a hot platen 5 of a heating device 4, and the hot platen 5 is heated by energization. The hot platen temperature is set by the temperature controller 6, and the actual temperature is displayed. The horizontality of the hot platen surface is adjusted by the horizontal adjustment legs 7 so that the thickness of the paraffin thin plate molded in the regenerating container 1 becomes uniform. The level of the hot platen is determined by incorporating a level into the heating device 4 or
The level on the hot platen is adjusted visually with a level of another part.

[0031]

FIG.

The regenerating container 1 is formed by molding a sheet-like thin plate. In order to use the container in an open state, a predetermined amount of solid paraffin is placed on the regenerating container 1, heated and melted by a heating device 4, and cooled and solidified. The desired thin sheet can be formed. Also, molding can be performed similarly by injecting paraffin melted in the pot 3.

The regenerating container 2 is a three-dimensional regenerating container. The regeneration container 2 has a three-dimensional cavity inside and is divided vertically by a dividing line 13 of the container, and paraffin is injected from an inlet 14. The inlet 14 communicates with the interior cavity and the entrance is located above the top of the cavity. An air vent hole 15 is provided at the apex of the three-dimensional cavity, and when the paraffin is filled, the inside air and moisture escape from the hole, and the filling is completed when the paraffin is also filled in the small hole 15. At this time, the paraffin at the injection port 14 becomes a pool in the regenerating container and finally solidifies. Therefore, the amount of cooling and shrinkage of the molded product is compensated by the pressing force due to the potential energy difference, and the material shortage of the molded product is prevented.

As shown in FIG. 2, the recycled container 1 is provided with a step 8 on the outer periphery of the molded product, which is the same as the thickness of the molded product. Paraffin can be formed flat by the steps 8. If the step 8 is not provided, as shown in FIG. 3, the bulge is formed along the inner side surface of the regeneration container 10 having no step like a convex uneven portion 12, and the upper surface is not flat. As described above, when the upper surface of the regenerating container is used in an open state, without the step 8, the upper surface of the molded product is not flat, and even when the paraffin is injected to the upper surface of the regenerating container, the contact angle of the paraffin is low. Due to its small size, there is a problem that paraffin flows out. In addition, the concave and convex grooves 9 on the outer bottom of the regeneration container 1 are means for reducing the warpage of the regeneration container 1 due to thermal expansion. The concave and convex grooves 9 effectively act during heating and cooling to suppress thermal deformation.

[0035]

FIG. 2

[0036]

FIG. 3

Since paraffin adheres to any material, it is difficult to remove it from the recycling container after molding.
Even if a container is made of an aluminum plate and the inner surface is coated with a fluororesin, the state of fixation does not change, and it cannot be taken out even if a release material is used. Next, when release paper is laid on the inside of the aluminum container, the release paper is warped and wrinkled, and a normal molded product cannot be obtained. As a result, a recycled container was manufactured so that the molded product was taken out by a method of making the container flexible and peeling off the molded product. This means that regardless of the shape of the molded product, thin plate, rod, string, or horseshoe, the shape of the recycled container is
This means that a flexible material that is rubbery and does not damage the molded product is required. FIG. 4 is a view showing a state in which the recycled container 1 manufactured according to the present invention is separated from the thin plate molded product 11 and the recycled container 1 is bent and peeled off from the thin plate molded product 11 to take out the molded product. is there.

[0038]

FIG. 4

FIG. 5 shows a case where a three-dimensional paraffin molded product is reproduced. The regeneration container 2 is vertically divided into two, and the upper container 2a has a structure that can be attached to and detached from the other container 2b by a dividing line 13 on the upper surface of the regeneration container 2. In the upper container 2a, a paraffin inlet 14 is provided so as to communicate with the molded product 17, and the inlet 14 has an opening above the top of the molded product 17, and the paraffin is utilized by utilizing the height difference. It also serves as a water pool to compensate for the volume shrinkage when solidified. When the paraffin is injected, it is filled from the bottom of the molded article 17 and eventually filled to the top, but the structure is such that air is released from the small through-hole 15 so that air is not confined at the top. The injected paraffin is solidified first from the thin portion 17a of the molded product 17, and the thick portion is solidified with a delay.
Is designed to flow into the thick portion 17b of the molded product 17, so that pressure is easily applied to the molded product 17.

[0040]

FIG. 5

The molded product 17 has a flat portion 17c. This surface is arranged at the bottom of the recycle container 2 because the flat portion 17c is accurately reproduced and, as described above, the thick portion is formed at the bottom. This is because it is necessary to arrange them. This flat portion 17c
Is generally disposed on the upper surface of the regeneration container 2 and has a configuration in which the upper portion is opened. In this case, there is no need to divide the regeneration container into two parts, and the price of the container is low,
In the case of this method, there is a problem that the plane portion of the molded product retreats when the paraffin shrinks, so that accurate reproduction cannot be performed.

Next, a convex step 16 is formed on the outer peripheral portion of the regeneration container 2.
Is provided. This step is for the purpose of preventing paraffin from flowing out due to extra injection or the like.
Paraffin has a small contact angle with any material, so that even if it is poured flush with the injection port 14, the injection
Paraffin exuding from the surface creeps on the surface and flows out, causing a shortage of material of the molded product. Therefore, the height of the convex step 16 needs to be equal to or higher than the height of the protrusion due to the contact angle. Further, the step formed for this purpose may be a concave groove, or may be a step in which the upper surface of the regenerating container 2b is located above the regenerating container 2a and borders on the dividing line 13.

The above is the embodiment using the hot plate type regeneration molding apparatus of the first embodiment. In this case, since the regeneration container is heated and kept warm on a hot plate, the regeneration container requires a heat-resistant material. The temperature of the hot plate according to the example was checked for regeneration at 120 ° C. to 150 ° C., but when it was 120 ° C. or less, the temperature rise time of the regeneration container was too long, and when it exceeded 150 ° C., the temperature difference between the regeneration containers became large. Is not preferred. Therefore, a silicone rubber is used for a regenerating container in contact with this temperature because a general rubber material is thermally degraded and cannot be used. Therefore, other materials include a heat-resistant rubber material such as fluorine rubber.

The rubber hardness of the recycling container is selected according to the thickness of the recycling container. In the case of the recycled container 1, since it is a flat and thin bottomed container, it is easily deformed. If the hardness is not increased, the container may be deformed at the time of movement and may damage the thin plate. In addition, in the case of the recycled container 2, since the shape of the molded product and the outer shape of the recycled container 2 do not coincide with each other, and the thin portion and the thick portion coexist, the whole is hardly deformed. There is a risk of damage when removing the molded product. Therefore, the regeneration container 1
The rubber hardness of a container capable of forming a uniform thickness as described above is set to 65 degrees or less, which is relatively hard, and the rubber hardness of a container having a large uneven thickness such as the recycled container 2 is set to 40 degrees or more.

Next, a second embodiment of the present invention is shown in FIG. In this method, the heating device is an oven type, in which the inside of the refrigerator is heated to heat the entire regeneration container, and paraffin is regenerated and molded. As the regenerating container, the same one as in the first embodiment is used, and the regenerating container is placed on the tray 19 of the oven-type heating device 18 and heated. The oven temperature at this time is
It was about 90 ° C. 120 ° C if you want to shorten the heating time
If the heat capacity is large as in the case of the regeneration vessel 2 shown in the first embodiment, the temperature difference between the inside and outside of the regeneration vessel becomes large, and the time is not shortened much.

[0046]

FIG. 6

If the inside of the oven is not a hot-air stirring type, the temperature distribution is poor, and uneven melting of paraffin and deformation of the regenerating container at the time of solidification occur, resulting in poor finish. Also,
This oven type has the inconvenience of having to take out and put in a regenerating container and not being able to see the melting and solidification state of paraffin. In addition, since the size in the refrigerator is limited, there is a difficulty in applicability such as a molded product having a high height cannot be inserted. In that respect,
Since the heating plate-type heating device has an open top surface, it can be used even with a tall molded product by covering it with a cover such as an aluminum wheel.

In the regeneration molding using an oven-type heating device, after the vessel is adjusted horizontally by a plurality of horizontal adjustment legs 7, the regeneration container is placed on a tray 19 in the refrigerator and heated to a predetermined temperature, and the molten paraffin is heated. When necessary, put solid paraffin in the pot and melt it on the saucer 19, and at the time of molding, take out the regeneration container once and put the paraffin on the regeneration container, or inject the paraffin of the molten pot and put it back in the refrigerator, It is reheated for a predetermined time by a timer, cooled naturally, solidified, and molded.

[0049]

According to the first means of the present invention, it is possible to recycle scrap materials and used paraffin, which have been previously discarded, into molded articles that can be reused any number of times. There is. In addition, since the recycled container is made of rubber, it can be taken out of the recycled container without damaging the thin plate or the molded part of the details, and since the opening surface of the recycled container is above the molded product, there is no outflow of paraffin. Since the work is simple, skill is not required, and there is an effect that anyone can perform this recycle molding.

According to the second means of the present invention, even if the regenerating container is directly and sufficiently heated, there is little thermal deterioration, no harmful substances are eluted, paraffin can be directly heated and melted, In addition, by combining the thickness and hardness of the recycle container, the molded product can be accurately reproduced without deformation of the recycle container, and the molded product can be taken out without damage by opening the recycle container. With the third means, it is possible to form a uniform thickness without convex uneven thickness portions of the wall surface generated by the contact angle between the paraffin and the regeneration container, and finishing after molding and extra processing such as cutting Has the effect of making it unnecessary.

In order to reduce deformation such as warpage or distortion due to thermal expansion of the regenerating container, forming a concave and convex pattern on the bottom surface of the regenerating container provides the effect of enabling accurate and uniform reproduction of a molded product. By the means, paraffin corresponding to the volume shrinkage generated when the molded product is cooled and solidified is compensated, and molding without so-called retraction or short molding can be performed. Furthermore, since air and moisture are extruded from the small through-holes by the fifth means, there is an effect that high-quality molding can be performed without causing short molding of the molded product.

The sixth means of the present invention has the effect of preventing molding defects such as the flat part of the molded product being retreated and the flat part being unable to be accurately reproduced due to the small contact angle. Since the combination separation line of the regeneration vessel divided into a plurality of pieces is arranged on the upper surface of the regeneration vessel, it has an effect that paraffin does not flow out, and a step is provided on the outer peripheral portion of the upper face of the regeneration vessel by the eighth means. Overfilling the top of the recycle container, has the effect of preventing air from being drawn into the molded product during the shrinkage process, there is no outflow of paraffin, material shortage in the molded product, hot platen etc. It doesn't get dirty.

According to the ninth means of the present invention, the regeneration container can be kept horizontal even on an inclined work table, and a thin plate having a uniform thickness can be formed. In addition, this device allows for the reuse of scrap materials and used paraffin, which have been conventionally discarded, thereby reducing medical costs and reducing incineration treatment through effective use of resources, and has an environmental conservation effect.

[Brief description of the drawings]

FIG. 1 is a view of a hot platen paraffin regenerating apparatus according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a regeneration container 1 for forming a paraffin thin plate having a step.

FIG. 3 is a cross-sectional view of a regeneration container 10 for molding a paraffin thin plate having no steps.

FIG. 4 is a cross-sectional view of a recycled container 1 and a molded product showing a method of removing the molded product.

FIG. 5 is a sectional view of a recycled container for a three-dimensional molded product.

FIG. 6 is a diagram of an oven-type paraffin regenerating apparatus according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Regeneration container 1 2 Regeneration container 2 3 Pot 4 Heating device (heating plate type) 5 Heating plate 6 Temperature controller 7 Horizontal adjustment leg 8 Step 9 Uneven groove 10 Reproduction container without a step 11 Thin plate molded product 12 Convex uneven part DESCRIPTION OF SYMBOLS 13 Dividing line 14 Injection port 15 Through-hole 16 Convex step 17 Molded product 17a Thin part 17b Thick part 17c Flat part 18 Oven-type heating device 19 Receiving tray

Claims (9)

[Claims] 1. A rubbery soft body for reclaiming offcuts and used paraffin into a desired shape,
A recycled container whose opening surface is located above the molded product. 2. The recycled container according to claim 1, wherein the recycled container is made of silicone rubber or fluorine rubber having a hardness of 40 degrees or more and 65 degrees or less. 3. The reclaimed container according to claim 1, wherein the reclaimed container is provided with a step not more than the thickness of the molded product. 4. A paraffin basin integrated with an inlet for compensating for volume shrinkage of a molded product is provided at an upper portion of a regenerating container for injecting molten paraffin into a regenerating container to regenerate and mold into a desired shape. 2. The regeneration container described in 2. 5. The recycled container according to claim 4, wherein a plurality of small through holes corresponding to the vicinity of the top of the molded product are provided in the upper portion of the recycled container. 6. The recycled container according to claim 1, wherein a flat portion of the molded article is disposed inside the recycled container. 7. The regeneration container according to claim 1, wherein a combination dividing line of a plurality of divided regeneration containers is formed on an upper surface of the regeneration container.
The regeneration container according to any one of claims 5 and 6. 8. The regeneration container according to claim 1, wherein a step for preventing paraffin outflow is provided at an outer peripheral portion of an upper surface of the regeneration container. 9. The regeneration container according to claim 1, wherein a plurality of horizontal adjustments are made, wherein the heating of the regeneration container and the melting of the paraffin are possible, and the vessel body can be adjusted horizontally. A paraffin regeneration molding device using a heating device with legs.