KR200393017Y1 - Nozzle assembly for shooting out - Google Patents

Abstract

The present invention is directed to a nozzle assembly for an injection molding machine. For this purpose, the present invention is divided into a large diameter portion 110 and a small diameter portion 120 having different inner diameters based on a stepped boundary surface at one side, and the large diameter portion 110. Cylindrical body member 100 for forming a plurality of vent holes 130 with a fine diameter to communicate with the outside; One end is coupled to the end portion of the large diameter portion 110 side of the body member 100, while the inner diameter is gradually reduced from one end to the other end connected to the large diameter portion 110 side discharge port 210 having a fine diameter at the other end A head member 200 to be formed; Cone-shaped cones 310 and 320 are respectively provided on both sides with the pointed ends thereof facing in opposite directions, and the cones 310 on one side of the cones 310 and 320 face each other. The gas discharge ring 330 formed as a plurality of through-holes 331 through concentric circles, the outer diameter of the diameter close to the inner diameter of the large-diameter portion 110 side of the body member 100 is formed integrally coupled to the plate surface. And a poppet member (300) integrally provided with a connection shaft (340) having a predetermined length to be screwed to the cone (310) on the other side (320); It is axially coupled to the connecting shaft 340 between the cones 310 and 320 on both sides connected by the connecting shaft 340, and a plurality of gas vent grooves 420 are radially formed on one side thereof. A first venting member 400 formed of a plurality of ring plates; The outer diameter is a size that is closely inserted into the inner diameter of the large diameter portion 110 side of the body member 100, the inner diameter is a ring-shaped supply passage for moving the molten resin between the outer diameter and the first vent ring member 400 530, the outer circumferential surface and one side surface of the circular guide grooves 510 while forming a plurality of gas vent grooves 520 radially on one side to be made of a plurality of ring plates finely formed The configuration is provided as the second venting member 500.

Description

Nozzle assembly for shooting machine

The present invention relates to a nozzle assembly for an injection molding machine, and more particularly, from a molten resin moving at a high pressure to a gas moving along an inner side along with a gas moving along an outer side of the molten resin, the gas is moved outwards through a separate vent line. The present invention relates to a nozzle assembly for an injection molding machine that enables a smoother discharge to produce a higher quality injection product.

In general, the injection molding machine is equipped with a nozzle to eject molten resin into a mold.

The injection nozzle allows the molten resin stock to be fed into the injection mold while being fed into the screw cylinder.

Such injection machine nozzles have already been proposed through Utility Model Publication No. 1990-4225 (Nozzle of Injection Machine).

That is, in the proposal proposal registration, the injection nozzle is largely provided as the body 10, the head 20, the poppet 30, and the venting assembly 40, as shown in FIG. ) Has been proposed to connect one end to the injection cylinder (not shown) to flow the molten resin injected from the injection cylinder.

In the above-described injection nozzle, the body 10 is a cylindrical tubular shape, and the inside is shaped such that the inner diameter of one side is smaller than the step, and the head 20 is one end of the body 10, in particular, one end of which the inner diameter is relatively large. One end is screwed on, the other end is a shape such that the inner and outer diameters are gradually reduced while the discharge hole 21 of the end has a fine diameter.

The poppet 30 is a shape that is formed to be inserted into the large diameter portion 11 side of the body 10, so that both ends are formed as a conical shape having both ends at a cylinder having a predetermined thickness and a predetermined length.

The vent ring assembly 40 is provided with a plurality of vent rings 41 whose outer diameter is similar in size to the inner diameter of the large diameter portion 11 of the body 10, and the inner diameter is formed as a size similar to the outer diameter of the poppet 30. It is a constitution.

Each of the vent rings 41 has a plurality of projections 42 radially projecting on one side thereof.

The ejector nozzle inserts the poppet 30 into the large diameter portion 11 of the body 10 while allowing the plurality of vent rings 41 to be continuously inserted into the outer circumferential surface of the poppet 30 and then the head 20. It is assembled as a structure which couples to the body 10. As shown in FIG.

At this time, each of the vent rings 41 is spaced apart from the outer diameter of the poppet 30 by a predetermined width, so that the molten resin is moved through the spaced spaces.

In the coupling configuration, the outer peripheral surface of the large diameter portion 11 side in which the poppet 30 and the venting assembly 40 of the body 10 are accommodated has a very small diameter to communicate with the outside. ) Is formed as a plurality.

Therefore, the molten resin that is pushed through the injection cylinder is led to the large diameter portion 11 through the small diameter portion 12 of the body 10, and the large diameter portion 11 has an outer circumferential surface of the poppet 30 and a venting assembly ( 40 is moved toward the head 20 through a space spaced between the inner diameter plane.

The molten resin moving through the gap between the poppet 30 and the venting assembly 40 in the large diameter portion 11 of the body 10 is pressurized at high pressure and discharged through the discharge hole 21 of the head 20 at the tip side. It is to supply the injection resin while being discharged to a fine diameter.

Meanwhile, since the molten resin contains moisture, the venting assembly 40 is provided for drying the injection machine itself without using a separate dryer as before.

That is, the molten resin of the high temperature and high pressure passes through the space between the poppet 30 and the vent ring assembly 40, and the moisture contained in the molten resin is gasified, and each vent ring of the vent ring assembly 40 41) between only the gas components are induced to be dispersed to the outside through the minute gap spaced apart by the protrusions minutely projected to one side between each other, the gas components dispersed to the outside a plurality of gases formed on the outer peripheral surface of the body 10 It is made to discharge to the outside through the discharge hole 13.

This separation of the molten resin and the gas allows the gap spaced by the protrusion 42 to be formed very finely between the vent rings 41 so that the molten resin having a certain viscosity or more passes as it is, and only the gas component is present in this gap. It is a factor in the action of dispersing outward through the passage.

However, since the gas discharge as before is to discharge only the gas component moving along the molten resin which is moved between the poppet 30 and the vent ring assembly 40, in particular in contact with the vent ring assembly 40 side. Since molten resin moving along the outer circumferential surface side of 30) contains a large amount of gas components, these gas components remain in the product during product molding, which is the biggest cause of product defects. There is a very serious problem that the complex and the production cost is excessive because the drying process of the must be.

Therefore, the present invention is designed to solve the above-mentioned problems of the prior art, and the main object of the present invention is also to the gas component that moves along the inside along with the gas component that moves along the outside of the molten resin in the passage of the molten resin. An object of the present invention is to provide a nozzle assembly for an injection molding machine capable of producing a high-quality injection product by allowing an appropriate discharge to the outside.

In addition, the present invention provides a nozzle assembly for an injection molding machine that can further increase productivity while significantly shortening the process time by eliminating a separate drying process by not leaving gas components generated from the molten resin in the product during the injection process. There is another purpose.

In order to achieve the above object, the present invention is divided into a large diameter portion and a small diameter portion having different inner diameters based on a stepped boundary surface on one side, and the plurality of vent holes are formed to have a plurality of fine holes to communicate with the outside. A cylindrical body member; A head member having one end coupled to a large diameter portion side end of the body member and having an outlet having a fine diameter formed at the other end while gradually decreasing an inner diameter from one end connected to the large diameter portion side to the other end; Conical cones are provided on both sides so that the one ends having sharp ends face each other in opposite directions, and the cones on the opposite sides of the cones have an outer diameter of a diameter close to the inner diameter of the large diameter portion of the body member and a plate surface. The gas discharge ring formed by forming a plurality of through-holes through which the molten resin passes horizontally on a concentric circle is integrally coupled, and the cone of the other side is integrally provided with a connecting shaft having a predetermined length to be screwed to the cone of the one side. A poppet member; A first vent ring member axially coupled to the connection shaft between the cones of both sides connected by the connection shaft, and having a plurality of ring plates formed on one side thereof in a plurality of radial gas vent grooves; The outer diameter is of a size that is tightly inserted into the inner diameter of the large diameter side of the body member, the inner diameter is the size to form a ring-shaped supply passage for the molten resin to move between the outer diameter of the first venting member, and the outer peripheral surface While forming a circular guide groove on the side surface is provided as a second venting member to be composed of a plurality of ring plates in which a plurality of gas vent grooves are radially formed on one side.

Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view showing a nozzle assembly for an injection molding machine according to the present invention, Figure 3 is a combined cross-sectional view of FIG.

As shown, the present invention is largely composed of the body member 100, the head member 200, the poppet member 300, the first venting member 400, and the second venting member 500.

 The body member 100 has a cylindrical shape through which the inside is penetrated, and the inside is divided into a large diameter part 110 and a small diameter part 120 to be stepped based on the boundary surface from one side according to the size of the inner diameter. An injection molding machine cylinder (not shown) is coupled to one end of the small diameter part 120 of the body member 100.

On the other hand, a large number of the vent holes 130 are formed in the large diameter portion 110 to communicate with the outside from the boundary surface of the inner diameter of the body member 100 to a minute diameter.

The head member 200 is coupled to one end of the large diameter portion 110 side of the body member 100 to discharge molten resin guided through the body member 100 as a fine size. That is, the inner diameter is gradually reduced from the end of the body member 100 to the discharge port 210 in order to discharge the molten resin to the required diameter.

The poppet member 300 is provided with cones 310 and 320 at both ends at a predetermined distance from each other, but the cones 310 and 320 at both ends are positioned at opposite ends of the cones. These cones 310 and 320 are configured to be connected by the connecting shaft 340.

At this time, the cone 310 of one side of the cone 310, 320 on both sides has an outer diameter of the diameter close to the inner diameter of the large-diameter portion 110 side of the body member 100 as the opposite surface, the molten resin will pass through the plate surface The gas discharge ring 330 is formed integrally so that a plurality of through holes 331 are formed on the concentric circle.

One end of the connecting shaft 340 having a predetermined length is integrally connected to the cone 320 on the opposite side of the cone 310 on the one side having the gas discharge ring 330 integrally.

The tip portion of the connecting shaft 340, which forms a spiral, is screwed into the cone 310 of the one side of the gas discharge ring 330, and the gas flow of horizontally cutting the outer circumferential surface in the longitudinal direction to the connecting shaft 340. The face 341 is formed in more than one place.

Therefore, the cone 310 of the one side having the gas discharge ring 330 is formed with a spiral groove in the center so that the connecting shaft 340 is screwed, but the central portion of the gas discharge ring 330 of the spiral groove has a more inner diameter A large number of gas guide holes 332 are formed radially from the inner diameter surface of the gas discharge ring 340 to the outer peripheral surface thereof.

In addition, the gas discharge ring 340 has a guide groove 333 is formed to a predetermined depth along the outer peripheral surface.

The first vent ring member 400 is configured as a plurality of ring plates provided in a ring shape, each ring plate is tightly fitted to the circular main surface of the connecting shaft 340, the outer diameter of the poppet member 300 It is most preferable that one end of the connecting shaft 340 is formed as the same outer diameter as the outer diameter of the cross section facing the cone 310 on the other side in the cone 320 of the one side is integrally coupled.

In addition, each ring plate of the first venting member 400 forms a circular guide groove 410 having a predetermined width and depth on one side, and a plurality of gases radially on one side where the guide groove 410 is formed. The vent groove 420 is shaped to be finely formed.

The first venting member 400 is provided with a plurality of ring plates of the above-described shape to be in close contact with each other between the ring plates between the cones 310 and 320 on both sides by the shaft coupling to fully cover the connecting shaft 340 It is a configuration.

Meanwhile, as illustrated in FIG. 4, the first venting member 400 coupled to the connection shaft 340 is a gas flow path that is a gap formed between the plane cut-out gas flow surface 341 and the inner diameter surface of the connection shaft 340 ( Gas is guided through 350.

The second venting member 500 is configured as a ring plate that is similar in shape to the first venting member 400, and the inner diameter is a predetermined size rather than the outer diameter of the first venting member 400 as shown in FIG. It is formed so as to form a large supply passage 530 to the molten resin is moved.

In addition, the ring plate of the second venting member 500 may have an outer diameter formed to have a size that is closely inserted into the inner diameter of the large diameter portion 110 side of the body member 100, as shown in FIG. 5. To be easily fitted and separated by fitting and separation, the outer circumferential surface and one side so that the circular guide groove 510 is formed.

In particular, the one side of the ring plate is formed so that the plurality of gas vent grooves 520 radially recessed to a fine depth.

The guide groove 510 formed as the outer circumferential surface of the guide groove 510 in the second venting member 500 is formed at a predetermined width and depth along the circular main surface, and crosses at regular intervals along the outer circumferential surface at regular intervals. It is formed so as to indent in a direction as a predetermined width and depth.

These guide grooves 510 serve to more smoothly discharge the gas induced through the gas vent grooves 520.

Looking at the assembly and the operation of the present invention made of such a configuration as follows.

As described above, in the present invention, a plurality of rings are connected to the connecting shaft 340 integrally coupled to the cone 320 on one side as shown in FIG. 6 in the poppet member 300 having the connecting shaft 340 integrally. The first vent ring member 400 made of a plate is fitted therein.

At this time, each ring plate of the first venting member 400 has one side surface which forms the guide groove 410 toward one direction.

The first vent ring member 400, which is formed as a plurality of ring plates, is fitted to the connecting shaft 340, and then the front end of the connecting shaft 340 is connected to the cone 310 of one side in which the gas discharge ring 330 is integrally formed. Be screwed.

That is, when the cone 310 is rotated by contacting the tip of the connecting shaft 340 to the cone 310 of the gas discharge ring 330 side, the connecting shaft 340 is screwed and the cone 310 and 320 on both sides. Each ring plate of the first bent ring member 400, which is already fitted to the connecting shaft 340, is in close contact with each other, thereby completely covering the outer circumferential surface of the connecting shaft 340.

At this time, when the first venting member 400 is filled between the cones 310 and 320 on both sides, the cones 310 and 320 on both sides are connected in a similar manner.

As shown in FIG. 7, the poppet member 300 is formed by filling the first venting member 400 between the cones 310 and 320 on both sides, and then joining the first ventry member 400 to the body member 100. Inserted into the large diameter portion (110).

When the poppet member 300 is inserted, the cone 310 which integrally forms the gas discharge ring 330 is inserted into the inner portion so that the gas discharge ring 330 is large diameter portion 110 inside the body member 100. ) And the small diameter portion 120 to be in close contact with the interface.

When the poppet member 300 is inserted into the body member 100, the second vent ring member 500, which consists of a plurality of ring plates, is inserted into the outer side of the first vent ring member 400 sequentially.

The second venting member 500 fitted to the first venting member 400 has an inner diameter larger than that of the first venting member 400, and the outer diameter is the large diameter portion 110 of the body member 100. Since it is a structure that can be inserted in close contact with the inner diameter of the large diameter portion 110 is eventually inserted into the outside of the first venting member 400 as shown in FIG.

At this time, the outer diameter of the first venting member 400 and the inner diameter of the second venting member 500 is spaced to a predetermined size to form a ring-shaped supply passage 530.

When the ring plate of the second venting member 500 is fitted as described above, the head member 200 is fastened to the body member 100 so that the coupling end of the head member 200 is connected to the second venting member 500. Push the ring plate fitted on the outermost side so that the ring plates are in close contact with each other.

Meanwhile, in the second venting member 500, the guide grooves 410 and 510 formed on one side of each ring plate may be fitted in one direction as in the first venting member 400.

Molten resin injected from the injection molding machine cylinder in the assembly state as described above is introduced through the small diameter portion 120 of the body member 100, the molten resin passed through the small diameter portion 120 is a cone of one side of the poppet member 300 It is guided to the outside by the 310 and passes through the through hole 331 of the gas discharge ring 330 integrally formed in the cone 310 is supplied to the large diameter portion 110 side.

The molten resin having passed through the gas discharge ring 330 is head member 200 through a ring-shaped supply passage 530 which is a space between an outer diameter of the first venting member 400 and an inner diameter of the second venting member 500. Will move to the) side.

Since the passage through which the molten resin moves in the head member 200 gradually decreases from the large diameter portion 110 side to the tip side, the moving pressure of the molten resin that naturally passes through the body member 100 is gradually increased.

When the molten resin is moved between the ring plates of the first venting member 400 and the second venting member 500, the gas component that moves along the outer diameter surface of the first venting member 400 of the molten resin is The first venting member 400 is guided to the outer circumferential surface of the inner connecting shaft 340 through the guide groove 410 formed in one side through the bent groove 420 between the ring plates in close contact with each other.

That is, as shown in FIG. 9, when the molten resin is moved toward the head member 20 through the supply passage 530 between the first ventring member 400 and the second ventring member 500, the molten resin has an inherent viscosity. As a result, only the gaseous components of the gaseous phase move inwardly through the vent grooves 420 without exiting into the vent grooves 420 formed in the respective ring plates of the first vent ring member 400.

At this time, the gas component moving inwardly of the first venting member 400 is formed between the inner diameter surface of the first venting member 400 and the gas flow surface 341 formed as the outer circumferential surface of the connecting shaft 340. The gas flow path 350 is guided to the cone 310 of the one side is provided with the gas discharge ring 330.

Gas components moving toward the gas discharge ring 330 through the gas flow path 350 are formed through the gas induction hole 332 radially formed at the center of the gas discharge ring 330 and the guide groove 333 on the outer circumferential surface thereof. Through the plurality of vent holes 130 formed on the outer circumferential surface of the member 100 to be smoothly discharged to the outside.

On the other hand, along the inner diameter surface of the second venting member 500 side of the molten resin moving toward the head member 200 side through the supply passage 530 between the first venting member 400 and the second venting member 500. The gas component to be moved is moved through a plurality of vent grooves 520 formed in one side with a minute depth between each ring plate of the second vent ring member 500, as shown in FIG. When distributed to the large diameter surface 110 side inner diameter surface of the body member 100 through the plurality of vent holes 130 formed in the large diameter surface 110 is smoothly discharged to the outside.

In this way, the gas components generated by the gasification of the moisture from the high pressure molten resin moving through the body member 100 are separated from the molten resin moving through the supply passage 530 to the outside and the inside, respectively, and the first vent It is to be discharged to the outside smoothly through the vent hole 130 formed in the large diameter portion 110 of the body member 100 through the ring member 400 and the second venting member 500.

Therefore, as compared to the configuration in which the gas component is discharged only through the second venting member 500 on the outside as in the past, the gas components formed in the inside of the molten resin, in particular, the first venting member 400 and the connecting shaft 340 and By allowing the gas discharge ring 330 to be smoothly discharged to the outside, the gas component discharge efficiency in the molten resin may be further improved.

As described above, the gas component formed in the molten resin is more completely removed while passing through the injection molding machine, so that only high quality molten resin can be stably supplied through the head member 200 at all times.

Supplying only pure molten resin through the head member 200 can remove the gas components contained in the molten resin more easily without additional drying process and quality of the product. The production becomes possible.

As described above, the present invention is melted to move at a high pressure through the first venting member 400 and the second venting member 500 by the poppet member 300 embedded in the body member 100. The gas component generated from the resin is guided between the ring plates of the first venting member 400 and the second venting member 500 to be dispersed to the outside of the large diameter portion 110 and at the same time the vent of the large diameter portion 110. It is to be smoothly discharged to the outside through the hole 130.

Therefore, the present invention allows the gas injection unit to be more completely removed from the molten resin before it is supplied to the mold, thereby producing a high quality product and at the same time improving the reliability of the product.

In addition, it is possible to eliminate the drying process and the gas generated in the drying process in the injection process more completely, it is possible to omit a separate complex drying equipment can provide a very economic effect.

1 is an exploded perspective view showing a nozzle assembly for a conventional injection molding machine,

Figure 2 is an exploded perspective view of the nozzle assembly for the injection machine according to the present invention,

3 is a cross-sectional view of FIG.

4 is a sectional view of main parts of the present invention;

5 is a perspective view showing a ring plate of a second poppet member according to the present invention;

6 to 8 is a perspective view showing the assembly process of the present invention,

9 is a sectional view showing the main parts of a molten resin and a gas moving path according to the present invention;

10 is a sectional view showing the main parts of a gas discharge structure according to the present invention;

Explanation of symbols on the main parts of the drawings

100: body member

110: large diameter

130: vent hole

200: head member

300: poppet member

310, 320: cone

330: gas discharge ring

331: Through hole

332: gas induction hole

333: Information Home

340: connecting shaft

350: gas flow path

400: first venting member

420: Gas Vent Groove

500: second vent ring member

520: Gas Vent Home

530: supply passage

Claims (5)

One side is divided into a large diameter portion 110 and a small diameter portion 120 having a different inner diameter based on the stepped boundary surface, the large diameter portion 110 is a plurality of vent holes 130 with a fine diameter to communicate with the outside Cylindrical body member 100 to form a; One end is coupled to the end portion of the large diameter portion 110 side of the body member 100, while the inner diameter is gradually reduced from one end to the other end connected to the large diameter portion 110 side discharge port 210 having a fine diameter at the other end A head member 200 to be formed; Cone-shaped cones 310 and 320 are respectively provided on both sides with the pointed ends thereof facing in opposite directions, and the cones 310 on one side of the cones 310 and 320 face each other. The gas discharge ring 330 formed as a plurality of through-holes 331 through concentric circles, the outer diameter of the diameter close to the inner diameter of the large-diameter portion 110 side of the body member 100 is formed integrally coupled to the plate surface. And a poppet member (300) integrally provided with a connection shaft (340) having a predetermined length to be screwed to the cone (310) on the other side (320); It is axially coupled to the connecting shaft 340 between the cones 310 and 320 on both sides connected by the connecting shaft 340, and a plurality of gas vent grooves 420 are radially formed on one side thereof. A first venting member 400 formed of a plurality of ring plates; The outer diameter is a size that is closely inserted into the inner diameter of the large diameter portion 110 side of the body member 100, the inner diameter is a ring-shaped supply passage for moving the molten resin between the outer diameter and the first vent ring member 400 530, the outer circumferential surface and one side surface of the circular guide grooves 510 while forming a plurality of gas vent grooves 520 radially on one side to be made of a plurality of ring plates finely formed A second venting member 500; Nozzle assembly for injection machine provided as. The nozzle assembly of claim 1, wherein a plurality of gas guide holes 332 are formed in the gas discharge ring 340 of the poppet member so as to radially penetrate the inner circumferential surface and the outer circumferential surface thereof. The nozzle assembly of claim 1, wherein the connecting shaft 340 of the poppet member 300 is formed with at least one gas flow surface 341 horizontally cut in the longitudinal direction on an outer circumferential surface thereof. According to any one of claims 1 to 4, wherein each ring plate of the first bent ring member 400 is the size of the inner diameter is easily fitted to the outer diameter of the connecting shaft 340, the outer diameter The nozzle assembly for the injection molding machine to form the same as the outer diameter of the cone 320 of one side to which the connecting shaft 340 integrally connected. 3. The body member 100 of claim 1, wherein the body member 100 is concentrically with the gas induction hole 332 formed in the gas discharge ring 340 of the poppet member 300. Nozzle nozzle assembly for forming a plurality of vent holes 130 so that the large diameter portion 110 and the outside communicate.