JPWO2020025293A5 - - Google Patents

Description

The present invention relates to an ultrasonic device for an injection device of a polymer (eg, a thermoplastic polymer). The ultrasonic device melts or fluidizes the polymer in the form of pellets, powders and tablets in a melting chamber. The plunger injects this polymer into the cavity of the mold that communicates the polymer with the melting chamber.

The ultrasonic device is known in the industry for melting and fluidizing a polymer, and has an ultrasonic converter that generates ultrasonic vibration and an ultrasonic head that propagates the vibration.

It is known that the tip of the ultrasonic device is placed in a melting chamber to melt and fluidize the polymer. The melting chamber of the injection device has a loading opening, a plunger, and an outlet bore. The loading opening loads polymers in the form of pellets, powders and tablets. The plunger presses the polymer against the ultrasonic head, melting the polymer and increasing the pressure of the molten polymer in the melting chamber. The outlet bore is connected to the mold and this molten polymer flows through the mold.

In this type of device, the tip of the ultrasonic device (tip relative to the ultrasonic transducer) is inserted into the melting chamber via the sonot load storage bore . A ring seal is placed and held around the cross section of the ultrasonic head to prevent the molten polymer from leaking from the inlet bore. In order to reduce the interference of the ring seal due to the vibration of the ultrasonic head, the ring seal is attached to the nodal plane at the root where the vibration amplitude of the ultrasonic head is zero .
EP1536936B1 US603467A

Often, the ring seal holds the ultrasonic head in the radial direction. Therefore, in order to increase the contact surface between the ring seal and the ultrasonic head, the ring seal is placed in the adjacent region of the nodal plane where the vibration amplitude is zero (the vibration amplitude is not completely zero at this location). Covering causes wear of the ring seal. Patent Document 1 discloses this kind of solution.

In another alternative solution, the ultrasonic head has a flange-shaped annular protrusion that coincides with and surrounds a nodal plane where the vibration amplitude is zero . Ring seals are placed above and below the flange and hold it to achieve a seal. Patent Document 2 discloses this kind of solution.

However, the flange has a certain thickness and therefore has an upper surface and a lower surface. A ring seal is attached there, but it is not on the same plane as the nodal plane but adjacent to it. Therefore, the vibration amplitudes on these two surfaces are not zero, and there is a small amount of vibration, which deteriorates the ring over time. Further, the manufacture of the ultrasonic head having the flange is complicated and the manufacturing cost increases.

The present invention relates to an ultrasonic device for an injection device of a polymer such as a thermoplastic polymer.

The ultrasonic device has an ultrasonic converter. The ultrasonic transducer vibrates an ultrasonic head placed in contact with the molten polymer to melt and fluidize the polymer. This is done by vibration and the effect of heat from the vibration.

The polymer injection device is a device that compresses the molten polymer through the outlet bore of the melting chamber that houses a part of the ultrasonic device in the mold. When the ultrasonic device is in contact with the polymer at the base (upstream side) of the outlet bore, the polymer is processed by the ultrasonic device before being ejected into the mold.

The ultrasonic device of the present invention has the following melting chamber, ultrasonic head, and ring seal.
* The melting chamber includes a loading opening for the polymer in the form of pellets, powder, and tablets, a plunger driven to move through the melting chamber and change its internal volume, and an outlet bore for the molten polymer connected to the mold. , With a sonot road storage bore .
* The ultrasonic head has a sonot load, and has a tip portion and a root portion separated by a first nodal plane (PN1) where the vibration amplitude becomes zero . The tip portion is entirely composed of the sonot load and projects into the melting chamber in the form of a cantilever through the sonot load storage bore to maintain contact with the polymer in the melting chamber. The root portion is at least partially formed by the sonot load, is outside the melting chamber, and includes a second nodal plane that comes into contact with an ultrasonic transducer and has a vibration amplitude of zero . The second nodal plane is parallel to the first nodal plane.
* The ring seal is configured to contact the ultrasonic head at the first nodal plane and seal the melting chamber having the compressed molten polymer.

The ring seal may be circular or other closed shape.

The ultrasonic device fluidizes and homogenizes the polymer before injecting it into the mold. This ensures that there are no non-melting materials and their quality is uniform before injection.

To perform the injection, the polymer is placed in the melting chamber in the form of pellets, powders, tablets, through the loading opening. This loading opening is sealed. The plunger contained in the melting chamber is operated by a drive such as a piston to reduce the internal volume and melt the polymer as a result of compressed contact between the polymer and the tip of the ultrasonic device in the melting chamber. And liquefy. By further moving the plunger, the melted polymer is pushed from the outlet bore and injected into the mold to produce a fine injection polymer product.

The ultrasonic device has an ultrasonic converter in contact with the ultrasonic head. The ultrasonic head transmits the vibration to the part protruding into the melting chamber. In the melting chamber, the ultrasonic head is in contact with the polymer.

The ultrasonic device has a tip portion and a root portion. The tip is inside the melting chamber and the root is outside the melting chamber. The entire ultrasonic head receives ultrasonic vibrations in the form of standing waves.

Any object that receives the vibration of a standing wave will generate one or more faces with zero vibration amplitude . These faces are known as nodals.

There is a first nodal plane between the tip and the root where the vibration amplitude is zero . At the base of the ultrasonic head, there is a second nodal plane where the vibration amplitude is also zero . This second nodal plane is parallel to and away from the first nodal plane.

In this case, the tip of the ultrasonic device is in the melting chamber in contact with the compressed molten polymer. To prevent the molten polymer from leaking out of the melting chamber through the sonot load storage bore (rather than the outlet bore), the ring seal is ultrasonically aligned with the first nodal plane (the plane where the vibration amplitude is zero). Placed around the head. This prevents the ring seal from interfering with the vibration of the ultrasonic head, and the wear of the ring seal due to the vibration can be avoided.

The ultrasonic device of the present invention proposes the following novel features.
* The first nodal plane is on the same plane as the first annular plane of the ultrasonic head, and the annular plane of the ring seal is placed in parallel on the first annular plane.
* The second nodal plane is on or near the same plane as the second annular plane of the ultrasonic head. A tightening device applies pressure to the ultrasonic head together with a pressurizing device. This pressure is transmitted to the ring seal through the root of the ultrasonic head, forming a sealing of the melting chamber.

The ultrasonic head has a first annular surface that is identical to the first nodal plane. The vibration amplitude becomes zero at all points on the first nodal plane. It also has a second annular plane. The second annular plane is the same as or adjacent to the second nodal plane, regardless of whether it is annular or not. The first and second planes are parallel to each other.

The second annular surface is composed of a flange-shaped annular protrusion around the ultrasonic head, or an annular slot or step formed in the ultrasonic head.

The pressurizing device applies pressure to the second annular surface of the ultrasonic head via the fixing device. This fixing device is attached to or arranged on the second annular surface of the ultrasonic head. Since the second annular plane corresponds to or is in the vicinity of the second nodal plane, the vibration amplitude becomes zero or decreases.

The pressure applied by the pressurizing device is orthogonal to the first annular plane and the second annular plane of the ultrasonic head, and pushes the second annular plane toward the first annular plane.

The first annular surface of the ultrasonic head comes into contact with and is pressed against the annular surface of the ring seal. The pressure applied by the pressurizer provides a seal between both sides that is not affected by the vibration of the ultrasonic head. This is because the first annular plane coincides with the first nodal plane, so that the vibration amplitude is zero on all annular planes.

According to one embodiment of the invention, the root of the ultrasonic head is configured by an ultrasonic amplifier sandwiched between a sonot load and an ultrasonic transducer, at least in part.

In this case, it is not preferable that the second nodal plane coincides with the coupling portion between the ultrasonic amplifier and the sonot load. The reason is that there is a large stress in this region that can damage the joint.

Alternatively, the entire root of the ultrasonic head may be configured by a sonot load. However, this is the case without an ultrasonic amplifier.

In either case, the tip of the ultrasonic head has a smaller cross section than its root. In the transition region between the tip and the root, the annular first annular surface of the ultrasonic head is formed consistent with the first nodal plane.

An annular third surface can also be placed around the sonot load storage bore of the melting chamber, in contact with another annular surface of the ring seal, on the opposite side of the first annular surface of the ultrasonic head.

In such cases, the ring seal is a tubular body held between the first and third annular surfaces, but does not necessarily have to be annular or circular. The pressure applied by the pressurizer can prevent polymer leakage from both gaskets.

The third surface forms an annular sheet and provides accurate positioning of the ring seal.

The ring seal is made of metal or ceramic. This makes it more resistant to high temperatures and vibrations, for example compared to other materials, including many plastic materials. Metals or ceramics can be used to form the ring seal because they are in contact with the ultrasonic head (so precisely formed) at the first nodal plane where the vibration amplitude is zero. be. Fixing the ring seal to the other surface of the ultrasonic head exposes the ring seal to vibration, even if it is adjacent to the first nodal plane, a material with some flexibility. It will be necessary to use (eg some plastic, rubber). This causes wear due to vibration and temperature, resulting in leakage of the molten polymer.

According to another embodiment, the ring seal forms an internal space. The cross section of this internal space is larger than that of the tip of the sonotrode. The difference in cross section between the two elements is 2.5 mm or less. This size difference allows vibration inside the ring seal at the tip without interfering with the walls of the ring seal placed around it. Further, this space forms a tubular duct that communicates with the rest of the melting chamber, which means that the tubular duct is extended, which is filled with polymer. In the tubular duct, the vibration amplitude at the tip becomes smaller and becomes zero as it approaches the first nodal plane. This allows the polymer contained within the tubular duct to solidify in the area corresponding to the first annular surface of the ultrasonic head and, in cooperation with the gasket sealing, avoiding leakage of the polymer through it. ..

Preferably, the plunger has a stroke that moves in a direction orthogonal to the first nodal plane of the ultrasonic device and is consistent with the sonot load.

The tip of the melting chamber, the plunger, and the ultrasonic head is preferably cylindrical. The diameter of the tip of the ultrasonic head is smaller than that of the melting chamber, forming an annular cavity around it.

According to one embodiment of the invention, the outlet bore of the melting chamber is adjacent to the ring seal. Therefore, it communicates with the internal gap between the tip of the ultrasonic head and the melting chamber. Preferably, it is closer to the first annular plane of the ultrasonic head than the tip of the ultrasonic head (ie, the tip of the cantilever). This allows the melted polymer to flow along most of the tip of the ultrasonic head before reaching the outlet bore. Thus, vibrations are accurately transmitted to this material, allowing optimal and uniform melting and fluidity to be achieved.

According to another embodiment of the present invention, the mold and the outlet bore of the melting chamber are formed by the upper half mold and the lower half mold in a combined state. In the separated state, the upper half mold and the lower half mold can access the inside of the mold and the outlet bore, and can take out the goods molded from the solid polymer and the contents in the outlet bore. It will be like.

The melting chamber sonot load storage bore and part of the melting chamber are formed in the upper half mold, and the rest of the melting chamber is attached to either the upper half mold, the lower half mold, or the half part. It may be formed on another body.

The space between the tip of the ultrasonic head and the surrounding ring seal is filled with polymer to form part of the melting chamber.

The pressurizing device of the fixing device may have a plurality of connectors. These connectors are attached to the fixing device at one end and to the upper half mold at the other end to secure the ultrasonic head and ring seal to them. This keeps the ultrasonic device attached to the upper half mold during the opening of the mold to take out the molded product. This greatly increases production efficiency.

When all or part of the melting chamber is formed by the lower half mold, by opening the mold, the tip of the ultrasonic head can be removed from the inside of the melting chamber, and the lower half mold can be used. Access to some openings in a melting chamber. This opening may be used as a loading opening for the polymer in the form of pellets, powders or tablets into the melting chamber. However, this is done after removing the previously produced article from the mold. By recombining the upper half mold and the lower half mold, the loading opening is newly sealed by the upper half mold, increasing the reliability for restarting the production cycle.

As another configuration, the sonot load and the loading opening can be realized with the same opening. In this case, the pressurizing device preferably includes a rapid release system. This rapid opening system is a system that releases and removes the ultrasonic head from the main body in which the melting chamber is formed or from the upper half mold or the lower half mold.

As an example, the pressurizing device can also have a plurality of connectors. These connectors are connected to the fixing device at one end and to the main body including the melting chamber at the other end, or to the upper half mold or the lower half mold. The force applied by the connector compresses the root of the ultrasonic head and ensures proper sealing of the melting chamber. It is preferable that the force of the pressurizing device is adjustable.

An example of the pressurizing device may be composed of a plurality of bars (rod-shaped bodies) and a plurality of tightening devices. These bars are arranged around the ultrasonic head at right angles to the first and second nodal planes to guide the axial movement of the fixation device. These tightening devices apply a predetermined amount of stress to the ultrasonic head. The fixing device is, for example, a flat plate with holes. This plate is parallel to the first and second nodal planes. A part of the ultrasonic head penetrates the hole and supports the circumference of the hole on the second annular surface of the ultrasonic head.

The flat plate that makes up the fixation device has multiple through holes around it, and when a bar is inserted into this through hole as part of the pressurizing device, the bar is axially in the fixed compression device. Can guide the movement. Further, when the bar is threaded and the nut is included as a tightening device, the pressure can be adjusted to the extent that the ultrasonic head that adjusts the nut receives it.

Another solution is to use plungers and springs.

Sectional drawing of the ultrasonic apparatus of this invention. The arrow indicates the direction in which the plunger moves. The development view of the ultrasonic apparatus of FIG.

According to one embodiment of the present invention, the ultrasonic device of the present invention is particularly applicable to the use of a polymer injection device.

The injection device has a melting chamber 10. The melting chamber 10 has a loading opening 11, an outlet bore 12, a sonot load storage bore 13, and a plunger 50. The loading opening 11 is filled with a polymer in the form of pellets, powder or tablets and sealed with a closure. The outlet bore 12 is connected to a cavity that defines a mold 60 for the item to be produced. The tip portion 21 of the ultrasonic head 20 is inserted into the melting chamber 10 via the sonot load storage bore 13. The plunger 50 changes the internal volume of the melting chamber 10. As a result, the polymer in the form of pellets, powder, and tablets is supplied into the melting chamber 10, the loading opening 11 is closed, and then the plunger 50 is driven by vibration to apply the polymer to the tip portion 21 of the ultrasonic head 20. , Melting and fluidizing the polymer. By further moving the plunger 50, the molten polymer is extruded from the outlet bore 12 to fill the mold 60.

The ultrasonic device of the present invention is formed by an ultrasonic converter 25 that generates vibration. The ultrasonic converter 25 is connected or coupled (hereinafter referred to as “connection”) to the ultrasonic head 20 that transmits the generated vibration.

The ultrasonic head 20 is formed by an ultrasonic amplifier 24 and a sonot load 23. The ultrasonic amplifier 24 is in direct contact with the ultrasonic converter 25. The sonot load 23 is connected to the ultrasonic amplifier 24.

The tip portion 21 of the ultrasonic head 20 corresponds to a part of the sonot load 23 and is included (entered) in the melting chamber 10. The tip portion 21 projects into the melting chamber 10 in a cantilever manner via the sonot load storage bore 13. The tip 21 maintains contact with the compressed molten polymer in the melting chamber 10 and vibrates the polymer to fluidize the polymer before it exits through the outlet bore 12 of the melting chamber 10. Perform homogenization. The remaining portion of the ultrasonic head 20 constitutes the root portion 22, which remains outside the melting chamber 10.

The ultrasonic transducer 25 generates a vibration of a sine waveform. This vibration is diffused by a standing wave in the ultrasonic head 20. An object exposed to a standing wave forms one or more nodal planes, where the vibration amplitude is always zero.

The ultrasonic head 20 of the present invention is configured such that the first nodal plane PN1 having zero vibration amplitude is formed between the tip portion 21 and the root portion 22. Thereby, corresponding to or consistent with the first nodal plane PN1, the ring seal 30 is placed in contact with it around the ultrasonic head 20 to seal the sonot load storage bore 13 and include it in the melting chamber 10. The compressed molten polymer is prevented from flowing out of the melting chamber 10 through it.

The ring seal 30 affects the vibration of the ultrasonic head 20, or the vibration affects the sealing by the ring seal 30. Therefore, the ring seal 30 is composed of a tubular body. The tip portion 21 of the ultrasonic head 20 penetrates this tubular body. The tubular body has an annular surface of the ring seal 30, which is parallel to and flush with the first nodal plane PN1 of the ultrasonic head 20. That is, the first annular surface S1 of the ultrasonic head 20 is on the same surface as the first nodal plane PN1 and is complementary to the annular surface of the ring seal 30.

At the assembly position, the ultrasonic head 20 is arranged such that its first annular surface S1 is in contact with and above the annular surface of the ring seal 30.

When the first annular surface S1 is on the same plane as the first nodal plane PN1, the vibration amplitude on all points of the annular surface becomes zero. As a result, the seal formed between the two members is not affected by the vibration of the ultrasonic head 20.

The ultrasonic head 20 generates a second nodal plane PN2 in which the vibration amplitude becomes zero at the root portion 22. The second nodal plane PN2 is parallel to and separated from the first nodal plane PN1. Preferably, the second nodal plane PN2 is separated from the coupling portion of the sonot load 23 and the ultrasonic amplifier 24 to avoid exposing the coupling portion to excessive stress. Excess stress can damage the joint (eg, screwed joints).

The ultrasonic head 20 has a second annular plane S2, which is parallel to the first annular plane S1 and is on or adjacent to the second nodal plane PN2. As a result, the vibration amplitude in the second annular surface S2 becomes zero or becomes extremely small.

The second annular surface S2 may be formed by a plurality of second partial planes. All of these second partial planes are flush with each other, forming an annular and discontinuous plane. This configuration also does not affect (a component of) the present invention.

The fixing device 40 is, in this embodiment, a flat plate having a through hole in the center. A part of the ultrasonic head 20 penetrates this through hole. This plate is arranged in contact with the second annular surface S2 of the ultrasonic head 20. The peripheral portion of the through hole maintains contact with the second annular surface S2 of the ultrasonic head 20.

The pressurizing device 41 applies pressure to the fixing device 40 from a direction orthogonal to the first nodal plane PN1 and the second nodal plane PN2. This pressure is propagated to the ultrasonic head 20 via the second annular surface S2, and a part of the ultrasonic head 20 is pressed against the ring seal 30. Thus, the pressure of the molten polymer in the melting chamber 10 prevents leakage from between the ring seal 30 and the first annular surface S1 of the ultrasonic head 20. The pressure applied by the pressurizing device 41 is higher than that of the molten polymer in the melting chamber 10.

The arrangement of the first annular surface S1 and the shape of the ring seal 30 form an axial seal between the ultrasonic head 20 and the ring seal 30 along with the compression direction applied to the ultrasonic head 20. In the prior art, it was from the radial direction.

In this embodiment, the pressurizing device 41 is composed of a plurality of bars (rod-shaped members). These bars are parallel to each other and orthogonal to the first nodal plane PN1 and the second nodal plane PN2 of the ultrasonic head 20. The ultrasonic head 20 has two ends. One end is attached to the main body including the melting chamber 10, and the other end penetrates the through hole of the fixing device 40. This makes it possible to guide the fixing device 40 in the axial direction defined by the bar.

The bar is a threaded bar and has a plurality of nuts as a tightening device 42. As a result, the fixing device 40 is moved toward the main body including the melting chamber 10, and the sandwiched ultrasonic head 20 is compressed. Alternatively, the threaded bar may be rotated, for example by a motor. The nut may be screwed into the fixing device 40 or may be integrally configured.

According to this embodiment, the main body including the melting chamber 10 is configured by combining the upper half mold 61 and the lower half mold 62. The upper half mold 61 partially forms the cavity of the mold 60, the outlet bore 12, and the sonot load storage bore 13. The lower half mold 62 forms the rest of the cavity of the mold 60, the rest of the outlet bore 12, the rest of the melting chamber 10 and the plunger 50. The filling opening 11 can be included in the opening of the portion of the melting chamber 10 included in the lower half mold 62. A part of the upper half mold 61 including the sonot load storage bore 13 is coupled to the lower half mold 62.

When the upper half mold 61 and the lower half mold 62 are combined, the cavity of the melting chamber 10 and the mold 60 and the outlet bore 12 are combined to complete, and the injection operation is executed. However, when they are in a separated state, the inside of each of the melting chamber 10, the mold 60, and the outlet bore 12 becomes accessible, and the hardened polymer contained therein can be removed. Further, the filling opening 11 is maintained in an open state, allowing the loading of polymers in the form of pellets, powders and tablets, allowing new injection operations to be initiated.

When the pressurizing device 41 is attached to the upper half mold 61, the mold 60 can be opened without separating the ultrasonic head 20 from the fixing device 40. As a result, production and cleaning operations can be accelerated and simplified.

The ring seal 30 may be an independent component of the upper half mold 61 in which the sonot load storage bore 13 is arranged. This facilitates maintenance and replacement. In such a case, the upper half mold 61 may have a third annular surface S3 parallel to and facing the first annular surface S1 around the sonot load storage bore 13. The ring seal 30 may also be disposed on the third annular surface S3 and have an annular and flat surface, and the ring seal 30 may be held between the ultrasonic head 20 and the upper half mold 61. The pressure applied by the pressurizing device 41 ensures sealing of the gaskets on both sides of the ring seal 30 and avoids leakage of the molten polymer.

The above description relates to an embodiment of the present invention, and a person skilled in the art may consider various modifications of the present invention, all of which are included in the technical scope of the present invention. To. The numbers in parentheses after the components of the claims correspond to the part numbers in the drawings and are attached for easy understanding of the invention and are used for a limited interpretation of the invention. (B) of "Remarks" 14 of Article 24-4 of the Patent Law Enforcement Regulations and Form 29-2) . Further, even if the numbers are the same, the description and the component names in the claims are not necessarily the same. This is due to the reasons mentioned above. With respect to the term "or", for example, "A or B" includes selecting "both A and B" as well as "A only" and "B only". Unless otherwise stated, the number of devices or means may be singular or plural.

10: Melting chamber 11: Loading opening 12: Outlet bore 13: Sonot load storage bore 20: Ultrasonic head 21: Tip 22: Root 23: Sonot load 24: Ultrasonic amplifier 25: Ultrasonic converter 30: Ring seal 40 : Fixing device 41: Pressurizing device 42: Tightening device 50: Plunger 60: Mold 61: Upper half mold 62: Lower half mold

Claims (15)

In ultrasonic equipment for polymer injection equipment
It has a melting chamber (10), an ultrasonic head (20) and a ring seal (30).
* The melting chamber (10) includes a loading opening (11) for a polymer in the form of pellets, powder, and a tablet, a plunger (50) that moves in the melting chamber (10) and changes its volume, and a mold (60). ) Has an outlet bore (12) and a sonot load storage bore (13).
* The ultrasonic head (20) has a sonot load (23) and is divided into a tip portion (21) and a root portion (22) at the first nodal plane (PN1) where the vibration amplitude becomes zero .
The tip portion (21) is entirely composed of the sonot load (23), and protrudes into the melting chamber (10) through the sonot load storage bore (13) in the form of a cantilever, and the melting chamber (10). Maintains contact with the polymer inside and
The root portion (22) is in contact with the ultrasonic converter (25), is at least partially formed by the sonot load (23), is outside the melting chamber (10), and has a vibration amplitude of zero . Including 2 nodal planes (PN2)
The second nodal plane (PN2) is parallel to the first nodal plane (PN1).
* The upper annular surface of the ring seal (30) is in contact with the ultrasonic head (20) at the first nodal plane (PN1), and the lower annular surface is the sonot load storage bore (10) of the melting chamber (10). Contact with 13) to seal and
The first nodal plane (PN1) is parallel to and on the same plane as the first annular surface (S1) of the ultrasonic head (20) with which the upper annular surface of the ring seal (30) is in contact .
The second nodal plane (PN2) is on the same plane as or adjacent to the second annular plane (S2) of the ultrasonic head (20).
The fixing device (40) and the pressurizing device (41) apply pressure to the second annular surface (S2), and the pressure is transmitted to the ring seal (30) via the root portion (22). , An ultrasonic device for a polymer injection device, characterized in that the sealing of the melting chamber (10) is formed. The root portion (22) includes an ultrasonic amplifier (24) between the sonot load (23) and the ultrasonic converter (25).
The ultrasonic device according to claim 1. The ultrasonic device according to claim 2, wherein the second nodal plane (PN2) is separated from the joint portion between the sonot load (23) and the ultrasonic amplifier (24). The diameter of the tip portion (21) is smaller than that of the root portion (22), and the transition region between the tip portion (21) and the root portion (22) forms the first annular surface (S1). The ultrasonic apparatus according to any one of claims 1-3. The melting chamber (10) has a third annular surface (S3) around the sonot load storage bore (13), and the third annular surface (S3) faces the first annular surface (S1).
Any one of claims 1-4, wherein the ring seal (30) is a tubular body held between the first annular surface (S1) and the third annular surface (S3). The ultrasonic device described in the section. The ultrasonic device according to claim 5, wherein the third annular surface (S3) forms an annular sheet that provides accurate positioning of the ring seal (30). The ultrasonic device according to claim 5 or 6, wherein the ring seal (30) is made of metal or ceramic. The ultrasonic device according to any one of claims 5-7, wherein the cross-sectional area of the internal space of the ring seal (30) is larger than that of the tip portion (21). It further comprises a plunger (50), characterized in that the plunger (50) moves in a direction orthogonal to the first nodal plane (PN1) and is aligned with the ultrasonic head (20). The ultrasonic device according to any one of claims 1-8. The melting chamber (10), the plunger (50), and the tip portion (21) are cylindrical, and the diameter of the tip portion (21) is smaller than that of the melting chamber (10), and the tip portion (21) is formed. ), The ultrasonic apparatus according to any one of claims 1-9, wherein a tubular space is formed. The ultrasonic device according to any one of claims 1-10, wherein the outlet bore (12) is adjacent to the ring seal (30). The upper half mold (61) and the lower half mold (62) are provided, and the upper half mold (61) and the lower half mold (62) have the mold (60) and the outlet bore (in the assembled state). A claim comprising 12), in which the inside of the mold (60) and the outlet bore (12) can be accessed in a disassembled state, and the molded product and the contents of the outlet bore (12) can be taken out. Item 2. The ultrasonic apparatus according to any one of Items 1-11. The sonot load storage bore (13) is formed in the upper half mold (61), the pressurizing device (41) of the fixing device (40) has a plurality of connectors, and the connector is fixed at one end. Connected to the device (40) and connected to the upper half mold (61) at the other end, fixing the ultrasonic head (20) and the ring seal (30) to the upper half mold (61). 11. The ultrasonic device according to claim 11. The ultrasonic device according to any one of claims 1-13, wherein the opening of the sonot load storage bore (13) and the filling opening (11) are the same opening. The ultrasonic wave according to any one of claims 11 to 13, wherein the filling opening (11) is included in the opening of the melting chamber (10) formed in the lower half mold (62). Device.