KR20110073881A - Mixing nozzle for injection molding - Google Patents

Abstract

The present invention relates to a mixing nozzle for injection molding.

<Purpose>

Accordingly, the technical gist of the present invention is the invention of Patent Application No. 2009-90828, wherein foreign substances including debris when the resin liquid and pigment flow into the nozzle are firstly removed through the filter groove of the third mixture to promote mixing. The resin liquid and the pigment, which are formed in the first and second mixing cylinders, are then zigzag-formed inlet grooves and jetting grooves to improve mixing efficiency, thereby improving mixing efficiency compared to conventional through-flow nozzles. There is a feature that can be molded into the product.

 <Composition>

In order to achieve the object of the present invention, the injection unit 110 of the long axis is formed on one side, the injection hole 110 is formed inside the discharge hole 111 narrowing toward the outer end is formed, the other side is fastened Part 120 is formed, the coupling body 121 is formed inside the fastening portion 120, the nozzle body is formed so that the inner portion of the discharge hole 111 and the central portion of the coupling hole 121 is in communication with each other ( 100); Is inserted into the coupling hole 121 of the nozzle body to be in contact with the inner step of the discharge hole 111 side, one side is a cylindrical opening, the partition 210 in contact with the discharge hole 111 side end in a zigzag form A first mixing cylinder 200 in which the injection groove 211 of the cut long hole is provided; One side opened in a symmetrical form with the first mixture 200 is inserted first to be accommodated in the coupling hole 121, but in a zigzag form on the wall surface 310 toward the outer end side of the coupling hole 121. A second mixing cylinder 300 having an inlet groove 311 of the cut long hole; One side opened to contact the wall surface of the second mixing cylinder 300 is inserted first to be accommodated in the coupling hole 121, but in a zigzag form on the wall surface 410 facing the outer end side of the coupling hole 121. The third mixing cylinder 400 is provided with a filter groove 411 of the cut long hole; .

<Effect>

Therefore, the present invention is formed so that the foreign matter, including the residue when the resin solution and the pigment is introduced into the nozzle is primarily removed through the filter groove of the third mixing cylinder to facilitate the mixing at the same time, and then the resin proceeded to the first and second mixing cylinder The liquid and the pigments allow the inflow grooves and the injection grooves of the long holes formed in a zigzag shape to improve the mixing efficiency, thereby improving the mixing efficiency compared to the conventional through-flow nozzles, thereby forming a product in a desired color.

Description

Mixing nozzle for injection molding}

The present invention is the use of the patent application No. 2009-90828, the foreign matter, including the residue when the resin liquid and the pigment is introduced into the nozzle is formed to facilitate the mixing while at the same time removed primarily through the filter groove of the third mixture, After that, the resin liquid and the pigments that are processed in the first and second mixing cylinders have a zigzag inlet groove and a jet groove formed in a zigzag shape, so that the mixing efficiency is improved. The present invention relates to a mixing nozzle for injection molding.

In general, during injection molding of plastic products, resins or pigments of different colors should be supplied together and mixed into the mold apparatus according to the color required in the product.

At this time, if the resin of different colors are not sufficiently mixed, there is a problem that can not obtain the color required by the product.

In addition, after injection molding with a resin liquid of a specific color, the injection molding operation using a resin liquid of a different color, after disassembly and clean the nozzle device to be used after reassembly, the conventional nozzle is a resin solidified discharge outlet By clogging, it must be melted and drilled with a hand tool such as a pin, and the cleaning operation is cumbersome and takes a long time.

Subsequently, the applicant of the present application attempted to solve the above-mentioned problem by filing a patent application No. 2009-90828, but the through-holes (inflow holes, injection holes) formed in the mixing cylinder have frequent clogging phenomenon, which makes it difficult to smoothly mix. .

The present invention is to solve the above-mentioned problems, the technical gist of the invention is the invention of Patent Application No. 2009-90828, the foreign matter, including the residue when the resin liquid and pigment flows into the nozzle through the filter groove of the third mixture The resin liquid and the pigment, which are formed to be removed at the same time and promote the mixing at the same time, and then the resin liquid and the pigment which have been processed in the first and second mixing cylinders are improved by the inflow grooves and the injection grooves of the long holes formed in a zigzag shape to improve the mixing efficiency. It is an object of the present invention to provide a mixing nozzle for injection molding, characterized in that the mixing efficiency is improved compared to the nozzle, thereby forming a product in a desired color.

In order to achieve the object of the present invention, the injection unit 110 of the long axis is formed on one side, the injection hole 110 is formed inside the discharge hole 111 narrowing toward the outer end is formed, the other side is fastened Part 120 is formed, the coupling body 121 is formed inside the fastening portion 120, the nozzle body is formed so that the inner portion of the discharge hole 111 and the central portion of the coupling hole 121 is in communication with each other ( 100); Is inserted into the coupling hole 121 of the nozzle body to be in contact with the inner step of the discharge hole 111 side, one side is a cylindrical opening, the partition 210 in contact with the discharge hole 111 side end in a zigzag form A first mixing cylinder 200 in which the injection groove 211 of the cut long hole is provided; One side opened in a symmetrical form with the first mixture 200 is inserted first to be accommodated in the coupling hole 121, but in a zigzag form on the wall surface 310 toward the outer end side of the coupling hole 121. A second mixing cylinder 300 having an inlet groove 311 of the cut long hole; One side opened to contact the wall surface of the second mixing cylinder 300 is inserted first to be accommodated in the coupling hole 121, but in a zigzag form on the wall surface 410 facing the outer end side of the coupling hole 121. The third mixing cylinder 400 is provided with a filter groove 411 of the cut long hole; .

At this time, between the first mixing cylinder 200 and the second mixing cylinder 300 is provided with a ball-type mixing ball 500 so as to uniformly mix the resin solution and the pigment introduced by the vortex or rotation, On the outer circumferential surface of the mixing ball 500 is preferably a plurality of hemispherical protrusions are formed to increase the mixing efficiency.

In addition, the first mixing cylinder 200 is pitch pitch of the injection groove 211 cut in a zigzag is 1.5mm, the cut area is 0.25mm, the second, third mixture 300,400 is cut in a zigzag Pitch spacing of the inlet groove 311 and the filter groove 411 is preferably 1.2mm but the cut area is 0.25mm.

As such, the present invention is formed so that the foreign matter, including the residue when the resin solution and the pigment is introduced into the nozzle is primarily removed through the filter groove of the third mixing cylinder to facilitate the mixing at the same time, and then proceeds to the first, second mixing cylinder The resin solution and the pigment allow the inlet grooves and the injection grooves of the long holes formed in the zigzag shape to improve the mixing efficiency, thereby improving the mixing efficiency compared to the conventional through-flow nozzles, thereby forming a product in a desired color.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

1 is an exploded perspective view of a mixing nozzle according to the present invention, FIG. 2 is a longitudinal sectional view of FIG. 2, FIG. 3 is an enlarged view of a main part of FIG. 2, and FIG. 4 is a front view showing a filter groove of a third mixture according to the present invention. 5 is a front view showing the inlet hole and the injection hole of the first and second mixture cylinder according to the present invention.

First, the present invention is largely composed of a nozzle body and a first, second, and third mixture as shown in FIGS.

At this time, the nozzle body 100 is formed on one side of the injection portion 110 of the long axis, the discharge portion 111 is formed in the injection portion 110 narrower toward the outer end is formed, the other side is fastened A portion 120 is formed, and the coupling hole 121 is formed inside the fastening portion 120 so that the inner portion of the discharge hole 111 and the central portion of the coupling hole 121 communicate with each other.

In addition, the first mixing cylinder 200 is inserted into the coupling hole 121 of the nozzle body to be in contact with the inner step of the discharge hole 111 side, one side is a cylindrical opening, the discharge hole 111 side The partition wall 210 which is in contact with the end is provided with an injection groove 211 of a long hole cut in a zigzag form.

Thus, the second mixing cylinder 300 is to be accommodated in the coupling hole 121 is inserted into one side of the opening is first inserted into a symmetrical form with the first mixing cylinder 200, the outside of the coupling hole 121 The wall 310 toward the end side is provided with an inlet groove 311 of the long hole cut in a zigzag form.

At this time, the third mixture cylinder 400 is inserted into one side of the opening to be in contact with the wall surface of the second mixing cylinder 300 to be accommodated inside the coupling hole 121, the outside of the coupling hole 121 The wall surface 410 toward the end side is provided with a long filter groove 411 cut in a zigzag form.

That is, as shown in FIG. 3, when the resin solution and the pigment first flow into the filter groove of the third mixture, various foreign substances (metal or resin residue) are formed to be filtered. The inlet groove and the injection groove of the two-mixed cylinder are zigzag-cut in the form of long holes, and the resin resin and pigment introduced are formed to be improved compared to the conventional through-hole mixing.

At this time, the mixing ball is accommodated inside the first and second mixture cylinders and rotated by the resin solution and the pigment introduced therein, so that vortices are generated to facilitate smooth color mixing, and then through the injection groove of the first mixture cylinder. The mixed resin solution + pigment produces a desired color and is formed to allow the injection hole of the nozzle to achieve injection molding.

At this time, between the first mixing cylinder 200 and the second mixing cylinder 300 is provided with a ball-type mixing ball 500 so as to uniformly mix the resin solution and the pigment introduced by the vortex or rotation, On the outer circumferential surface of the mixing ball 500 is preferably a plurality of hemispherical protrusions are formed to increase the mixing efficiency.

In addition, the mixing ball is preferably formed of a spherical ball made of a ceramic or zirconia made of excellent wear resistance, it is preferably formed of an outer diameter of 1/2 ~ 2/3 compared to the inner diameter of the first and second mixture cylinder. .

This is because it promotes the most suitable mixing during rotational vortex of the incoming resin liquid and pigment.

In this case, as shown in FIGS. 4 to 5, the pitch gap of the injection grooves 211 cut in zigzag is 1.5 mm, but the cut width is 0.25 mm, and the second, Three mixing cylinders 300 and 400 are pitch intervals of the inlet grooves 311 and the filter grooves 411 cut in a zigzag, but the cut width is preferably 0.25 mm.

The present invention is not limited to the above-described specific preferred embodiments, and those skilled in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is an exploded perspective view of a mixing nozzle according to the present invention;

2 is a longitudinal cross-sectional view of FIG.

3 is an enlarged view illustrating main parts of FIG. 2;

Figure 4 is a front view showing a filter groove of the third mixture according to the present invention,

5 is a front view showing the inlet hole and the injection hole of the first and second mixture cylinder according to the present invention.

<Description of Major Symbols in Drawing>

100 ... nozzle body 110 ... jet

111 ... outlet 120 ... connection

121 ... union 200 ... first mixture

210 ... bulkhead 211 ... injection groove

300 ... second mixture 310 ... wall surface

311 ... inlet groove 400 ... third mixture

410 ... wall side 411 ... filter groove

500 ... Mixing Ball

Claims (3)

The injection unit 110 of the long axis is formed on one side, the discharge hole 111 is narrowed toward the outer end is formed in the injection unit 110, the fastening portion 120 is formed on the other side, A nozzle body 100 formed at an inner side of the fastening part 120 such that an inner side of the discharge hole 111 and a central portion of the engaging hole 121 communicate with each other; Is inserted into the coupling hole 121 of the nozzle body to be in contact with the inner step of the discharge hole 111 side, one side is a cylindrical opening, the partition 210 in contact with the discharge hole 111 side end in a zigzag form A first mixing cylinder 200 in which the injection groove 211 of the cut long hole is provided; One side opened in a symmetrical form with the first mixture 200 is inserted first to be accommodated in the coupling hole 121, but in a zigzag form on the wall 310 facing the outer end side of the coupling hole 121. A second mixing cylinder 300 having an inlet groove 311 of the cut long hole; One side opened to contact the wall surface of the second mixing cylinder 300 is inserted first to be accommodated in the coupling hole 121, but in a zigzag form on the wall surface 410 facing the outer end side of the coupling hole 121. The third mixing cylinder 400 is provided with a filter groove 411 of the cut long hole; Mixing nozzle for injection molding, characterized in that made. The ball-type mixing ball 500 of claim 1, wherein the resin solution and the pigment introduced therebetween are uniformly mixed by vortex or rotation between the first mixing cylinder 200 and the second mixing cylinder 300. Is provided, but the mixing nozzle for injection molding, characterized in that a plurality of projections of the hemispherical shape is further formed on the outer peripheral surface of the mixing ball 500 to increase the mixing efficiency. According to claim 2, wherein the first mixing cylinder 200 is a pitch spacing of the injection groove 211 cut in a zigzag is 1.5mm, the cut area is 0.25mm, the second, third mixing cylinder (300, 400) Mixing nozzle for injection molding, characterized in that the pitch gap of the inlet grooves 311 and the filter grooves 411 cut in a zigzag cut area is 0.25mm.

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