KR100777836B1 - A filter nozzle for mixing and filtering of melting resin - Google Patents

Abstract

The present invention smoothly flows during inflow and outflow of molten resin and improves the removal effect of foreign matters while maintaining a constant pressure, while kneading and filtration of molten resin that facilitates the mixing of pigments contained in the resin. It provides a filter nozzle for. The filter nozzle is provided with a plurality of inlet grooves and outlet grooves formed on the outer circumferential surface, and a plurality of guide grooves are formed at each boundary to remove foreign substances while the molten resin flowing into the inlet grooves flows to the outlet groove side. It is coupled to the cylinder tip such as injection molding machine and extruder. At this time, the filter member, the inlet hole is formed to a certain depth from one end of the body having a round bar shape, the outlet hole is formed to a certain depth from the other end of the body, a plurality of inlet formed perforated to communicate with each other the inlet hole and the inlet groove The connection hole, the discharge hole and the outlet groove is configured to be provided with a plurality of discharge connection holes are formed perforated.

Description

Filter nozzle for kneading and filtration of molten resin {A FILTER NOZZLE FOR MIXING AND FILTERING OF MELTING RESIN}

1 is a view for explaining the technical idea of the filter nozzle for kneading and filtration of the molten resin according to the present invention;

2 is an exploded perspective view showing the main configuration of a filter nozzle for kneading and filtration of a molten resin according to a preferred embodiment of the present invention;

3 is an enlarged perspective view of the filter member illustrated in FIG. 2;

4 is a side view of the filter member shown in FIG. 2 seen from a blower hole side;

5 is a cross-sectional view taken along line A-A of FIG. 4;

6 is a cross-sectional view illustrating an assembly state of a filter nozzle for kneading and filtration of a molten resin according to an exemplary embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

11: body, 16: cap,

100: filter member, 110: inlet groove,

120: outflow home, 132: guide home,

140: inlet hole, 150: discharge hole,

160: inlet connector, 170: outlet connector.

The present invention relates to a filter nozzle for kneading and filtration of molten resin, and more particularly, to facilitate the inflow and discharge of molten resin without excessive pressure, and to remove foreign substances, The present invention relates to a filter nozzle for kneading and filtration of a molten resin to smoothly mix pigments contained in the molten resin.

In general, an injection molding machine or an extruder (hereinafter referred to as an injection machine) is provided with a cylinder for melting and kneading plastic felt, and the tip of the cylinder is in contact with a sprue of an injection mold or die (hereinafter referred to as a mold). By injecting the molten resin into the mold, a nozzle is mounted so that an injection molded product or an extrudate (hereinafter referred to as an injection molded product) is formed.

On the other hand, as the high-quality plastic products with color recently become commonplace, filter nozzles are being applied to support the injection molding machine. Such a filter nozzle is installed as a nozzle of an injection molding machine cylinder to stably knead pigments and to remove various types of foreign substances contained in molten resin, thereby improving the quality of plastic products and extending the life of the mold. I look forward to it.

In connection with such a filter nozzle, Korean Utility Model Publication No. 199595-0004239 "Injector Nozzle" (hereinafter referred to as "prior art") is proposed by improving the structure of a conventional filter nozzle.

According to the prior art, a conventional filter nozzle is a body having a through hole, a heater fixed to the outer peripheral surface of the body by a band to maintain a constant temperature, and screwed to the outer end of the body to melt It is composed of a cap formed with a blowing hole (nozzle hole) to eject the resin, and a filter member is installed into the through-hole formed in the body to filter foreign matter contained in the molten resin. The filter member has a plurality of molten resin inlet grooves recessed so that the inlet side is opened and the outlet side is blocked in a state of being inserted into the through hole of the body, and the inlet side is blocked, and the outlet side is open. A plurality of outlet grooves concave into the structure is formed, a plurality of guide grooves are formed on the interface between the inlet groove and the outlet groove.

However, according to the related art, the filter member of the conventional filter nozzle performs a function of filtering foreign matter contained in the molten resin, but after the molten resin passes through the inlet and outlet grooves of the linear structure, the ejection hole (nozzle hole) It is pointed out that there is a problem that the quality of the injection product is reduced due to poor mixing of the pigment and the molten resin due to the low efficiency of stirring the molten resin and the pigment because it is moved through a simple discharge path to be discharged.

In order to improve this, the prior art proposes a filter nozzle which forms the inflow groove and the outflow groove of the filter member to have an exhaust shape by a predetermined angle so that the filter member is rotated by the angle of the inflow groove and the outflow groove when the molten resin is supplied. have.

However, the conventional technique proposed in this way also has the same problems as conventional filter nozzles, and it is a reality that the kneading and filtration functions of the molten resin are not substantially obtained sufficiently. That is, since the filter nozzle is installed at the tip of the cylinder to be in contact with the sprue of the mold, the diameter of the filter nozzle is inevitably reduced compared to the rear of the cylinder. Therefore, since the filter member is installed to knead and filter the molten resin in such a structure, excessive pressure is applied at the filter nozzle part, so that the molten resin is not smoothly filled, which causes the product to be unmolded or poorly formed. It is.

In particular, according to the prior art, the filter member is not able to increase the number of inlet and outlet grooves, which adversely affects the flow of molten resin, so that the resistance is increased to supply an appropriate amount of molten resin in a short time, so that There is a problem that a malfunction occurs or the production time is increased, so that the depth and width of the guide groove is inevitably increased, so that kneading and filter functions cannot be properly obtained.

The present invention has been made to solve the conventional problems as described above so that the flow is smoothly carried out during the inflow and discharge of the molten resin and the removal effect of the foreign matter is improved while maintaining a constant pressure to improve the quality and productivity of the injection product It is an object to provide a filter nozzle for kneading and filtration of a molten resin.

Another object of the present invention is to provide a filter nozzle for kneading and filtration of the molten resin to improve the quality of the injection-molded product by the smooth mixing of the pigment contained in the molten resin.

According to a feature of the present invention for achieving the above object, the present invention has a plurality of inlet and outlet grooves are formed on the outer peripheral surface, each boundary portion so that the foreign matter is removed while the molten resin flowing into the inlet groove overflows to the outlet groove side In the filter nozzle for kneading and filtration of the molten resin coupled to the cylinder front end is provided with a filter member having a plurality of guide grooves are formed in the filter member, the filter member is formed in a constant depth from one end of the body having a round bar shape A hole; A discharge hole formed at a predetermined depth from the other end of the body; A plurality of inflow connection holes formed in the hole so that the inflow hole and the inflow groove communicate with each other; It includes a plurality of discharge connection holes which are formed to be perforated so that the discharge hole and the outlet groove is in communication with each other, the inlet groove is formed on one end of the outer circumferential surface formed in the inlet hole and gradually from the inlet opening toward the outlet side of the outlet hole The depth of the groove is formed to be tapered upward, the outlet groove is formed so as to taper downward to increase the depth of the groove gradually from the inlet hole inlet side toward the outlet hole side, characterized in that the discharge opening is formed at the discharge end do.

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In the filter nozzle for kneading and filtration of the molten resin according to the present invention, the inlet and outlet holes are formed symmetrically with respect to the central partition wall of the body, and communicate with each inlet groove on the inlet hole side in contact with the central partition wall. The inlet connection hole is formed, and the discharge connection hole may be formed in communication with each outlet groove on the discharge hole side in contact with the central bulkhead.

In the filter nozzle for kneading and filtration of the molten resin according to the present invention, the guide groove may be formed in the pitch range of 0.7 to 1.3 mm, the height of 0.8 to 1.2 mm.

According to another feature of the present invention for achieving the above object, the present invention is a filter nozzle for kneading and filtration of the molten resin coupled to the cylinder end, having a cylindrical shape, a through-hole is formed inside the cylinder end A body coupled to the body; A cap which is screwed to an outer end of the body and has a ejection hole formed to eject the molten resin; A plurality of inflow grooves and outflow grooves are formed on the outer circumferential surface to filter foreign materials contained in the molten resin and are installed in the through-hole formed in the body, and a plurality of boundary portions at each boundary so that the molten resin flowing into the inflow grooves flows to the outflow groove side. A filter member including a guide groove formed therein; The inflow groove of the filter member is formed in an upward tapered shape in which the depth of the groove is gradually decreased from the inflow side toward the outlet side, and the outflow groove is gradually increased in depth from the inflow side toward the outlet side. The downward taper is formed in a shape.

In the filter nozzle for kneading and filtration of the molten resin according to the present invention, the filter member and the inlet hole is formed in a constant depth from the inlet side on the center of the body; A discharge hole formed at a predetermined depth from an outlet side on the center of the body so as to be symmetrical with the inflow hole; A plurality of inflow connection holes formed in the hole so that the inflow hole and the inflow groove communicate with each other; The discharge hole and the outlet groove may be configured to include a plurality of discharge connection holes are formed perforated to communicate with each other.

In the filter nozzle for kneading and filtration of the molten resin according to the present invention, the guide groove may be formed in the pitch interval of 0.7 to 1.3 mm range, the height of 0.8 to 1.2 mm range.

1 is a view for explaining the technical idea of the filter nozzle for kneading and filtration of the molten resin according to the present invention.

Referring to FIG. 1, a filter nozzle for kneading and filtering a molten resin according to the present invention is installed in a body 11 having a through hole 12 therein and a through hole 12 formed in the body 11 to melt. The filter member 100 which knead | mixes resin and filters the foreign material contained in molten resin is comprised.

At this time, the filter member 100 has an inflow groove 110 formed to be inclined upwardly from an inflow side (inlet side) on the outer circumferential surface of the body 11 and an outflow formed inclined downward toward the outlet side in contact with the inflow groove 110. Comprising the groove 120 and the guide groove portion 130 is formed with a plurality of guide grooves 132 are recessed at predetermined intervals at each boundary of the inlet groove 110 and the outlet groove 120. Such inlet groove 110 and outlet groove 120 is preferably formed to cross each other. At this time, the filter member 100 of the filter nozzle according to the present invention is formed in a shape in which the inlet groove 110 is tapered upward in which the depth of the groove is gradually reduced from the inlet side toward the outlet side, and the outlet groove 120 is introduced. It is formed in a downward tapered shape in which the depth of the groove is gradually increased from the side toward the outlet side.

Through such a configuration, the filter nozzle according to the present invention may have a structure in which the flow path of the molten resin is expanded, thereby increasing inflow and outflow of the molten resin.

In addition, in the filter nozzle according to the present invention, the filter member 100 includes an inlet hole 140 formed at a predetermined depth from one end, a discharge hole 150 formed at a predetermined depth from the other end of the body, and an inlet hole 140. Inflow connecting hole 160 is formed to be perforated so that the inlet groove 110 is in communication with each other, and the discharge connection hole 170 is formed to be perforated so that the discharge hole 150 and the outlet groove 120 is in communication with each other, melting The flow path of the resin is further expanded.

The filter nozzle for kneading and filtration of the molten resin according to the present invention has a tapered structure in which the inflow groove is inclined upward from the inflow side and a tapered structure in which the outflow groove is inclined downward toward the discharge side. Since the flow is smooth and the friction with the inner wall of the nozzle is also reduced, the discharge pressure of the molten resin is maintained appropriately, so that the appropriate amount of molten resin is supplied and the molten resin supplied from the injection machine Since the pigments contained in the molten resin are repeatedly dispersed and mixed while moving through the plurality of outflow grooves and the discharge holes, the blending process of the pigments contained in the molten resin is made more smoothly. It can be expected that the manure operation of foreign matter is performed stably.

Hereinafter, the configuration of the present invention in more detail by the accompanying drawings as follows.

Figure 2 is an exploded perspective view showing the main configuration of the filter nozzle for kneading and filtration of the molten resin according to a preferred embodiment of the present invention, Figure 3 is an enlarged perspective view showing the filter member shown in Figure 2, Figure 4 Figure 2 is a side view of the filter member shown in the ejection hole side, Figure 5 is a cross-sectional view taken along the line AA of Figure 4, Figure 6 is kneading and filtration of the molten resin according to a preferred embodiment of the present invention It is sectional drawing for demonstrating the assembly state of the filter nozzle for.

3, the filter nozzle for kneading and filtration of the molten resin according to the present invention has a substantially cylindrical shape and a body 11 having a through hole 12 therein, and a screw on the outer end of the body 11 It is tightened to install the cap 16 with the ejection hole 15 so as to eject the molten resin and the through-hole 12 formed in the body 11 so that the molten resin is kneaded and the foreign matter contained in the molten resin is filtered out. A plurality of inlet grooves 110 and outlet grooves 120 are formed on the outer circumferential surface, and a plurality of guide grooves 132 are formed at each boundary so that molten resin introduced into the inlet grooves 110 flows to the outlet groove 120 side. It is composed of a filter member (100).

Although not shown in the filter nozzle, a heater or the like may be installed on the outer circumferential surface of the body 11 to fix the band to the body 11 so as to maintain a constant temperature.

3 to 5, the filter member 100, the inlet hole 140 is formed to a certain depth from one end of the body (100a, see Fig. 5) having a round bar shape, and constant from the other end of the body A discharge hole 150 formed to a depth, a plurality of inlet grooves 110 formed in the longitudinal direction to have a predetermined angle on the outer circumferential surface of the body, and a predetermined angle on the outer circumferential surface in contact with the inlet groove 110 Guide grooves formed with a plurality of outlet grooves 120 are formed in the longitudinal direction so as to have a spacing of the plurality, and a plurality of guide grooves 132 are indented at predetermined intervals at each boundary of the inlet groove 110 and the outlet groove 120 130, the inlet connecting hole 160 and the inlet connecting hole 160 formed on the inlet groove 110 so that the inlet hole 140 and the inlet groove 110 communicate with each other, the outlet hole 150 and the outlet groove 120 are A discharge connection hole 170 is formed on the outlet groove 120 so as to communicate with each other.

At this time, the inlet groove 110 is formed on the outer circumferential surface (inlet side of the inlet hole) formed in the inlet hole 140, the inlet opening 112 is in communication with the inlet hole, the outlet hole 150 from the front end of the inlet opening 112 It is formed in a shape that tapered upward to gradually reduce the depth of the groove toward the outlet side of. In addition, the outlet groove 120 is formed in a tapered shape so that the depth of the groove gradually increases from the inlet side of the inlet hole 140 toward the outlet side of the outlet hole 150 while the outlet groove 150 is formed at the outlet end thereof. Is formed to communicate with the discharge opening (122).

In the present embodiment, the inflow groove 110 and the outflow groove 120 are formed in eight, respectively, but the quantity of the inflow groove 110 and the outflow groove 120 may be increased or decreased according to the outer diameter of the filter member 100. As can be, it is desirable to increase the amount of the inlet groove 110 and the outlet groove 120 as much as possible within a range that is not a problem in strength while having a corresponding quantity.

In addition, the inlet hole 140 and the outlet hole 150 are formed symmetrically with respect to the central partition wall of the body 100a, the shape of each of which is preferably formed as a conical groove in which the inner diameter is reduced toward the central partition wall, the center An inlet connecting hole 160 is formed in communication with each inflow groove 110 at the inflow hole 140 in contact with the partition wall, and is discharged in communication with each outflow groove 120 at the discharge hole 150 in contact with the central partition wall. The connection hole 170 is formed. The inlet connecting hole 160 and the outlet connecting hole 170, as shown in Figures 5 and 6, is preferably formed to be inclined in the flowing direction to minimize the flow resistance.

In addition, the filter member 100 has the other end of the inlet groove 110 in the assembled state, that is, the end of the outlet side inlet groove 110 of the outlet hole 150 is in close contact with the inner surface of the cap 16 while the flow of molten resin is blocked. The molten resin is blocked and flows only to the guide groove 132 side, and the inlet end of the inlet hole 140 of the outlet groove 120 is intimately blocked with the inner surface of the body 100a, and the molten resin does not flow backwards and is inclined. It is discharged to the discharge hole 150 through the groove 120 and the discharge connection hole 170 side.

On the other hand, the guide groove 132 constituting the guide groove 130, as shown in Figure 6, the pitch interval (a) is in the range of 0.7 to 1.3 mm, the height (b) is formed in the range of 0.8 to 1.2 mm It is preferable. At this time, when the pitch spacing (a) of the guide groove 132 is less than the above range it can be experimentally confirmed that the teeth {protrusions forming the guide groove 132} is broken, when the pitch interval is 1.5mm or more It was confirmed experimentally that the mixing of the resin and the pigment was not smooth during the passage of the molten resin. Accordingly, the pitch interval is more preferably 1 mm. In addition, when the height (b) of the guide groove 132 is less than the above-mentioned range, clogging occurs, the flow of molten resin is poor, and if it exceeds the above-mentioned range, it was experimentally confirmed that the teeth easily broken, Accordingly, the distance between the valley and the floor is more preferably 1 mm.

The operation of the present invention as described above is as follows.

As shown in FIG. 6, when the cap 16 is assembled while the filter member 100 is inserted into the body 11 of the filter nozzle of the injection molding machine, the assembly of the filter member 100 is completed.

When the injection molding machine is operated in the state in which assembly is completed as described above, molten resin is supplied to the filter member 100 through the through hole 12 of the body 11, wherein the molten resin is introduced into each inlet groove 110 and the inlet hole 140. It is dispersed to the side and flows. The molten resin flowing toward the inlet groove 110 is moved in the flow path formed to be tapered upward through the inlet opening 112 and then flows into the outlet groove 120 through the guide groove 132 of the guide groove 130. The foreign matter that is kneaded and contained in the molten resin is filtered out on the guide groove 132. At this time, since the inlet groove 110 according to the present invention is gradually formed to be inclined upwardly, the inflow flow of the molten resin is smooth and stable, and the resistance is reduced to minimize the pressure. At this time, the molten resin injected toward the inlet hole 140 is ejected to the inlet groove 110 again through the inlet connecting hole 160 and moved through the flow path of the inlet groove 110 while the outlet groove (the guide groove 130). 120) to the side.

In addition, the molten resin overflowed through the guide groove 130 is moved through the plurality of outlet grooves 120 again and discharged through the discharge opening 122 formed at the discharge end, and then discharged into the discharge connection hole 170 and discharged. It is discharged through the hole 150. At this time, since the outflow groove 120 is gradually inclined downward, the discharge flow of the molten resin is soft and the resistance is reduced, thereby minimizing the discharge pressure.

As described above, in the filter nozzle according to the present embodiment, the molten resin supplied from the cylinder is injected into the plurality of inlet grooves 110, and the molten resin injected into the inlet hole 140 is again provided through the plurality of inlet connecting holes 160. Molten resin mixed with each other while being ejected toward the inlet groove 110, the molten resin overflowed through the guide groove 130 is discharged into the plurality of outlet grooves 120 and at the same time into the plurality of outlet connection holes 170 to discharge holes 150 As it is discharged through), the process of dispersing and mixing the molten resin and the pigment through the flow path of the fluid is repeated, and the blending process of the pigment contained in the molten resin is more smoothly performed.

On the other hand, since the guide grooves 132 are densely arranged to the appropriate size as described above in the process of the molten resin flows from the inlet groove 110 side to the outlet groove 120 side through the guide groove 130, the resistance is While acting small, the filtration of foreign matter is performed smoothly and is not easily broken.

As described above, the filter nozzle for kneading and filtration of the molten resin according to the preferred embodiment of the present invention has been shown in accordance with the above description and drawings, but this is for example only and does not depart from the spirit of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope.

According to the filter nozzle for kneading and filtration of the molten resin according to the present invention, since the inflow groove is a tapered structure inclined upward from the inflow side and the outflow groove is a tapered structure inclined downward toward the discharge side, the inflow and outflow of the molten resin Since the flow is smooth and friction with the inner wall of the nozzle is also reduced, the discharge pressure of the molten resin is properly maintained, so that the appropriate amount of the molten resin is supplied, thereby improving the quality and productivity of the injection product. In addition, since the molten resin supplied from the injection molding machine is moved through a plurality of inlet and inlet holes and a plurality of outlet and outlet holes, the pigment contained in the molten resin is repeatedly dispersed and mixed. Since the mixing process of the pigment is made more smoothly, and the filtration of the foreign matter by the guide groove is performed stably, the quality of the injection product is improved.

Claims (7)

delete A plurality of inflow grooves and outflow grooves are formed on the outer circumferential surface, and a filter member having a plurality of guide grooves is formed at each boundary so that foreign matters are removed as the molten resin flowing into the inflow groove flows to the outflow groove side. In the filter nozzle for kneading and filtration of the molten resin is The filter member may include an inlet hole formed at a predetermined depth from one end of the body having a round bar shape; A discharge hole formed at a predetermined depth from the other end of the body; A plurality of inflow connection holes formed in the hole so that the inflow hole and the inflow groove communicate with each other; The discharge hole and the discharge groove is configured to include a plurality of discharge connection holes are formed perforated to communicate with each other, The inlet groove is formed such that an inlet opening is formed at one end of the outer circumferential surface in which the inlet hole is formed, and the taper is tapered upward from the inlet opening toward the outlet side of the outlet hole and gradually decreases in depth. The outlet groove is discharged from the inlet hole inlet side. A filter nozzle for kneading and filtration of a molten resin, characterized in that formed to be tapered downward to gradually increase the depth of the groove toward the hole side, the discharge opening is formed at the discharge end thereof. The method of claim 2, The inflow hole and the discharge hole are formed symmetrically with respect to the central bulkhead of the body, the inlet connection hole is formed in communication with each inlet groove on the inlet hole side in contact with the central bulkhead, each outlet groove and the outlet hole side in contact with the central bulkhead A filter nozzle for kneading and filtration of the molten resin, characterized in that the discharge connection hole is formed in communication. The method of claim 2 or 3, The guide groove has a pitch in the range of 0.7 to 1.3 mm, the height of the filter nozzle for kneading and filtration of the molten resin, characterized in that formed in the range of 0.8 to 1.2 mm. A filter nozzle for kneading and filtration of molten resin bonded to a cylinder tip, A body having a cylindrical shape and having a through hole formed therein and coupled to the cylinder tip; A cap which is screwed to an outer end of the body and has a ejection hole formed to eject the molten resin; A plurality of inflow grooves and outflow grooves are formed on the outer circumferential surface to filter foreign materials contained in the molten resin and are installed in the through-hole formed in the body, and a plurality of boundary portions at each boundary so that the molten resin flowing into the inflow grooves flows to the outflow groove side. A filter member including a guide groove formed therein; The inflow groove of the filter member is formed in an upward tapered shape in which the depth of the groove is gradually decreased from the inflow side toward the outlet side, and the outflow groove is gradually increased in depth from the inflow side toward the outlet side. The filter nozzle for kneading and filtration of the molten resin, characterized in that the downward tapered shape. The method of claim 5, The filter member has an inlet hole formed to a predetermined depth from the inlet side on the center of the body, A discharge hole formed at a predetermined depth from an outlet side on the center of the body so as to be symmetrical with the inflow hole; A plurality of inflow connection holes formed in the hole so that the inflow hole and the inflow groove communicate with each other; Filter nozzle for kneading and filtration of the molten resin, characterized in that it comprises a plurality of discharge connection holes which are formed to be perforated so that the discharge hole and the outlet groove is in communication with each other. The method according to claim 5 or 6, The guide groove has a pitch interval of 0.7 to 1.3 mm, the height of the filter nozzle for kneading and filtration of the molten resin, characterized in that formed in the range of 0.8 to 1.2 mm.

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