WO2016182169A1 - Hot runner apparatus for injection molding - Google Patents

Hot runner apparatus for injection molding Download PDF

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Publication number
WO2016182169A1
WO2016182169A1 PCT/KR2016/001178 KR2016001178W WO2016182169A1 WO 2016182169 A1 WO2016182169 A1 WO 2016182169A1 KR 2016001178 W KR2016001178 W KR 2016001178W WO 2016182169 A1 WO2016182169 A1 WO 2016182169A1
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WO
WIPO (PCT)
Prior art keywords
nozzle
resin
pieces
coupling
injection molding
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Application number
PCT/KR2016/001178
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French (fr)
Korean (ko)
Inventor
이기희
강신호
이일행
김승호
이종태
Original Assignee
주식회사 피피아이평화
평화 파이프 인더스트리 인코퍼레이티드
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Application filed by 주식회사 피피아이평화, 평화 파이프 인더스트리 인코퍼레이티드 filed Critical 주식회사 피피아이평화
Publication of WO2016182169A1 publication Critical patent/WO2016182169A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/20—Injection nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles

Definitions

  • Injection molding is a method of processing and molding a synthetic resin, and refers to a molding method in which a thermoplastic resin is heated and fluidized in a heated cylinder, and then injected into a mold by an injection ram and press-fitted into a plunger for injection.
  • the recent injection molding machine is increasing the case where the hot runner (Hot runner) is provided as a structure for heating the manifold (Manifold) having a resin supply passage to which the resin is supplied.
  • thermal decomposition occurs after a certain temperature or a certain time elapses, such as hard PVC, so that not only the injection workability for the resin having a narrow injection molding temperature range is excellent, but also easy to maintain and maintain.
  • the object of the present invention is to provide an injection molding hot runner device with an improved structure to reduce the cost and time required for repair.
  • An injection molding hot runner device includes: a manifold in which a resin moving passage through which a resin is moved is formed; A resin injection hole is formed therein, and the resin injection hole is installed in the manifold such that the resin injection hole communicates with the resin movement passage, and a nozzle for injecting resin flowing from the manifold into an injection mold; And an opening and closing part for opening and closing the nozzle, wherein the nozzle is formed by combining a plurality of nozzle pieces detachably coupled to a coupling position, and one side is installed to be in communication with the manifold and the other side is in communication with the injection mold.
  • the nozzle piece is formed with a resin injection groove concave;
  • the resin injection hole is preferably formed inside the nozzle body by combining the plurality of resin injection holes when a plurality of the nozzle pieces are combined to the engaging position.
  • the first assembly it is preferable to press the one side of each of the nozzle pieces combined to one side of the nozzle body to be coupled to the coupling position to surround the outer peripheral surface of the nozzle body in a close contact with each other.
  • the first coupling is provided with a fitting coupling portion for sliding and fitting;
  • the fitting coupling portion is preferably formed to be tapered so that the circumferential length gradually expands along the direction in which the first coupling slides and is inserted.
  • the nozzle may further include a second coupling body coupled to the other side of the nozzle body and restraining the other side of each nozzle piece combined at the coupling position.
  • the second coupling body surrounds the nozzle body and is coupled with the other side of the nozzle body to fix the other side of each nozzle piece combined at the coupling position.
  • the present invention preferably further comprises a heating coil installed in the nozzle to heat the nozzle.
  • the nozzle may further include a fastening member coupled to the other side of the notch body to engage the plurality of nozzle pieces combined at the engagement position;
  • Each of the nozzle pieces is preferably formed so that the fastening hole through which the fastening member is fastened.
  • the nozzle body is made of a combination of two nozzle pieces detachably coupled to the coupling position;
  • the nozzle piece of any one of the two nozzle pieces is formed so as to have a groove portion having a length extending in the longitudinal direction of the nozzle piece; It is preferable that the projection part which engages with the said groove part protrudes in the said nozzle piece of the other of two said nozzle pieces so that it may have a length extended along the longitudinal direction of the said nozzle piece.
  • the groove portion and the protrusion is preferably formed to be disposed outside the resin injection hole.
  • the two nozzle pieces are guided to the position combined with the engaging position by the engagement of the groove portion and the projection portion.
  • the two nozzle pieces are guided to a position where the fastening holes formed in the nozzle pieces are connected to each other by engaging the groove portion and the protrusion portion.
  • the present invention also includes a temperature measuring unit for measuring the temperature of the nozzle;
  • the insertion groove into which the temperature measuring part is inserted is preferably formed to be concave.
  • the nozzle can be separated into a plurality of nozzle pieces, so that even if the resin is burned in the nozzle and the resin injection hole is blocked, the nozzle is separated to block the resin injection hole. It is easy to remove the residues, so it is not only excellent in injection workability but also has high viscosity when melted like hard PVC and the temperature range that is melted into resin is narrow, so it can be effectively used for injection work using flammable resin. have.
  • the present invention through the airtight structure formed by the engagement of the groove portion and the projection portion and the coupling structure formed by the fastening of the nozzle piece and the fastening member, it is possible to effectively block leakage of resin introduced into the resin injection hole through the coupling portion between the nozzle piece. Can provide improved confidentiality.
  • FIG. 1 is a view schematically showing the structure of an injection molding hot runner device according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing a nozzle according to an embodiment of the present invention.
  • FIG. 3 is an exploded perspective view illustrating an exploded nozzle according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view showing a cross section of a nozzle according to an embodiment of the present invention.
  • FIG. 5 is an exploded perspective view showing the exploded nozzle according to another embodiment of the present invention.
  • FIG. 6 is an exploded perspective view illustrating an exploded view of the nozzle piece according to another embodiment of the present invention.
  • FIG. 7 is a cross-sectional view showing a cross section of a nozzle according to another embodiment of the present invention.
  • FIG. 1 is a view schematically showing the structure of an injection molding hot runner device according to an embodiment of the present invention
  • Figure 2 is a perspective view showing a nozzle according to an embodiment of the present invention.
  • 3 is an exploded perspective view showing an exploded nozzle according to an embodiment of the present invention
  • Figure 4 is a cross-sectional view showing a cross section of the nozzle according to an embodiment of the present invention.
  • the injection molding hot runner device 100 according to an embodiment of the present invention, the injection mold, that is, the clamping plate 1, the space plate (2) laminated with a plurality of flat plate ),
  • the holding plate 3 and the cavity plate 4 are installed in the injection mold formed by lamination, and include a manifold 110, a nozzle 120, and an opening and closing unit 130.
  • the manifold 110 is installed inside the space plate 2 and keeps the resin supplied through the injection machine at a high temperature while using a heater (not shown). Inside the manifold 110, a plurality of resin movement passages 111 are formed in a lattice form.
  • Resin supplied to the manifold 110 through the injection machine is supplied to the nozzle 120 by moving the inside of the manifold 110 through the resin movement passage 111, the shape of the resin movement passage 111, injection
  • the size and position of the mold may be determined differently according to the volume and injection conditions of the mold.
  • the nozzle 120 keeps the resin passing through the manifold 110 not to solidify, and serves as a passage for discharging the resin supplied through the manifold 110 into the injection mold.
  • a resin injection hole h that forms a passage for discharging the resin supplied through the manifold 110 into the injection mold is formed.
  • the nozzle 120 having the resin injection hole h formed therein is installed in the manifold 110 such that the resin injection hole h communicates with the resin movement passage 111, and flows in from the manifold 110.
  • the resin to be injected is injected into an injection mold, more specifically, the cavity plate 4.
  • One side of the nozzle 120 is in communication with the resin movement passage 111 of the manifold 110, the other side of the nozzle 120 is installed to communicate with the cavity plate (4).
  • the opening and closing portion 130 is provided to open and close the nozzle 120.
  • the opening and closing portion 130 is illustrated as being provided in a form including a piston 131 and the cylinder 133.
  • Discharge of the resin through the nozzle 120 is performed while the other end of the nozzle 120 is fixed to the surface of the cavity plate 4, and the amount of resin discharged is the piston 131 installed inside the cylinder 133. It is controlled by the lifting action of.
  • the lifting of the piston 131 is made by pneumatic pressure supplied through an air line (not shown) formed in the cylinder 131, and the resin discharged through the nozzle 120 according to the lifting distance of the piston 131.
  • the amount can be adjusted.
  • the nozzle 120 includes a nozzle body 121, a first coupling body 123, and a second coupling body 125.
  • the nozzle body 121 is composed of a plurality of nozzle pieces 122 that are detachably coupled to each other at a coupling position. In the present embodiment, it is illustrated that the nozzle body 121 is composed of two nozzle pieces 122 are combined in the engaging position.
  • Each nozzle piece 122 is formed to have a shape that forms part of the nozzle body 121.
  • each nozzle piece 122 is formed in a shape in which the nozzle body 121 is cut into two parts around an imaginary line extending along the longitudinal direction of the resin injection hole h, and thus cut out. It is exemplified that the two nozzle pieces 122 of the formed shape are formed to be symmetrical with each other.
  • each resin injection groove 122a formed in each nozzle piece 122 is connected to each other when the nozzle pieces 122 are combined at a coupling position to form a resin injection hole h.
  • the resin injection hole h is combined so that the resin injection grooves 122a respectively formed in the nozzle pieces 122 are connected to each other when the plurality of nozzle pieces 122 are combined at the coupling position, so that the nozzle body 121 is connected to each other. It is formed inside of.
  • one side of the nozzle body 121 formed of a combination of the plurality of nozzle pieces 122 communicates with the manifold 110 (see FIG. 1), and the other side of the nozzle body 121 is the cavity plate 4 of the injection mold. It is installed to communicate with;
  • the resin injection hole h has a passage in which one side thereof communicates with the manifold 110 and the other side thereof communicates with the cavity plate 4 in the nozzle body 121.
  • the first coupling body 123 is coupled to one side of the nozzle body 121 and restrains one side of each nozzle piece 122 combined at the coupling position.
  • the first assembly 123 is illustrated as being formed in a ring shape surrounding the outer circumferential surface of the nozzle body 121.
  • the first coupling body 123 is forcibly fitted to one side of the nozzle body 121 so as to surround the outer circumferential surface of the nozzle body 121, so that one side of each nozzle piece 122 combined at the coupling position is in close contact with each other. Pressurize
  • a fitting coupling portion 121a is formed in which the first coupling body 123 slides and is forcibly fitted.
  • the fitting portion 121a has a nozzle at one side of the nozzle body 121 along the longitudinal direction of the nozzle body 121 so that the circumferential length gradually expands along the direction in which the first coupling body 123 slides and is fitted. It is formed to be tapered so that the circumferential length gradually expands toward the other side of the main body 121.
  • the first coupling body 123 coupled to the fitting portion 121a formed at one outer circumferential surface of the nozzle body 121 is along the fitting portion 121a at one side of the nozzle body 121 and along the nozzle body 121.
  • the sliding movement toward the other side of the pressing the nozzle piece 122 in a direction in close contact with each other with a stronger force one side of the nozzle body 121 can be restrained stably with a strong pressing force.
  • the second coupling body 125 is coupled to the other side of the nozzle body 121 to restrain the other side of each nozzle piece 122 combined at the coupling position.
  • the second coupling body 125 surrounds the nozzle body 121 and is coupled to the other side of the nozzle body 121 to fix the other side of each nozzle piece 122 combined at the coupling position.
  • a screw engaging portion 121b having a screw thread is formed on the other outer circumferential surface of the nozzle body 121, and the second coupling body 125 includes a cover portion 125a and a cover coupling portion 125b. Illustrated as being provided in a form comprising a.
  • the cover portion 125a is formed in a pipe shape formed to have an inner diameter corresponding to the outer diameter of the nozzle body 121.
  • the cover portion 125a formed as described above surrounds the nozzle body 121 and accommodates each nozzle piece 122 combined at a coupling position therein.
  • the cover coupling portion 125b is formed on the inner circumferential surface of the cover portion 125a formed as described above in a form including a screw thread.
  • the cover coupling portion 125b thus formed is coupled to the screw coupling portion 121b through a screw coupling in the cover portion 125a.
  • each nozzle piece 122 is fixed by the second coupling body 125.
  • the second coupling body 125 including the cover part 125a and the cover coupling part 125b as described above accommodates the plurality of nozzle pieces 122 combined at the engaging positions therein, and each nozzle piece 122 is provided therein.
  • the other side of the nozzle body 121 formed by combining the plurality of nozzle pieces 122 in the engaging position can be restrained stably.
  • the injection molding hot runner device 100 may further include a heating coil 140.
  • the heating coil 140 is installed outside the nozzle body 121 to be in contact with the nozzle body 121 and heats the nozzle 120 to set the temperature of the resin injected into the injection mold through the nozzle 120. It serves to maintain the temperature.
  • Unexplained reference numeral 145 indicates a coil cover installed outside the heating coil 140 to cover the heating coil 140 so that the heating coil 140 is not exposed to the outside.
  • a resin injection hole h is formed in the nozzle 120, and the resin supplied to the manifold 110 through the injection machine is a resin movement passage 111. 1, the inside of the manifold 110 is moved and supplied to the nozzle 120. The resin supplied to the nozzle 120 is injected into the cavity plate 4 of the injection mold through the resin injection hole h formed in the nozzle 120 as described above.
  • the nozzle 120 keeps the resin passing through the manifold 110 not to solidify, and serves as a passage for discharging the resin supplied through the manifold 110 into the injection mold.
  • the resin when the temperature of the resin passing through the nozzle 120 is lower than the melting condition of the resin, the resin may be solidified inside the nozzle 120, and when the temperature of the resin passing through the nozzle 120 is too high than the melting condition of the resin. May burn inside the nozzle 120.
  • rigid PVC has excellent advantages such as insulation, corrosion resistance, chemical resistance, etc., but has high viscosity when melted, and no melting point (Tm) exists so that carbonization occurs after a certain temperature or after a certain time has elapsed. Since the moldable temperature range is narrow, injection molding is more difficult than other crystalline plastic materials such as PP.
  • the nozzle 120 is assembled by fixing one side and the other side of the nozzle body 121 to which the plurality of nozzle pieces 122 are coupled with the first coupling body 123 and the second coupling body 125, respectively. It is provided in the form.
  • the nozzle body 121 is formed into a plurality of nozzle pieces 122. .
  • the resin injection hole h inside the nozzle 120 is external to each nozzle piece 122 in the form of a resin injection groove 122a. It is made in a form that can be exposed to.
  • the nozzle piece 122 when a part of the nozzle piece 122 is irreparably damaged or damaged due to the resin solidified or burned in the resin injection hole h, the nozzle piece damaged or broken without having to replace the entire nozzle 120. Since only 122 may be replaced, the cost required for the maintenance of the nozzle 120 may be reduced.
  • the nozzle 120 of the present embodiment is provided to reduce the burden on long-term work interruption and maintenance time and costs due to clogging of the nozzle 120, and thus high viscosity during melting and injection such as hard PVC
  • the narrow moldable temperature range offers the advantage of very effective use in injection molding with flammable resins.
  • the injection molding hot runner device 100 of the present embodiment including the nozzle 120 having the above-described configuration has a configuration such that the nozzle 120 can be separated into a plurality of nozzle pieces 122. Even if the resin injection hole (h) is blocked by the resin inside the nozzle 120, the nozzle 120 can be separated to easily remove the residue blocking the resin injection hole (h). Since this possible temperature range is narrow, the injection workability with respect to the easily burnable resin is excellent.
  • the injection molding hot runner device 100 of the present embodiment has a configuration that allows the nozzle 120 to be separated into a plurality of nozzle pieces 122, thereby facilitating maintenance work and maintaining maintenance. It can reduce the cost and time required.
  • nozzle 200 of the above configuration is only one preferred embodiment of the present invention, there may be various embodiments that can replace them.
  • FIG. 5 is an exploded perspective view showing an exploded nozzle according to another embodiment of the present invention
  • Figure 6 is an exploded perspective view showing an exploded nozzle piece according to another embodiment of the present invention
  • Figure 7 is another embodiment of the present invention It is sectional drawing which shows the cross section of the nozzle which concerns on an Example.
  • the nozzle 220 according to another embodiment of the present invention includes a nozzle body 221, a first coupling body 123, and a fastening member 227.
  • the nozzle body 221 is composed of a plurality of nozzle pieces 222 and 224 which are detachably coupled to each other in a combined position.
  • the two nozzle pieces 222 and 224 are combined to form the nozzle body 221 to be combined in the engagement position.
  • Each nozzle piece 222,224 is formed so that it may have a shape which forms a part of nozzle body 221. As shown in FIG. Each of the nozzle pieces 222 and 224 is formed in a shape in which the nozzle body 221 is cut into two parts around an imaginary line extending along the longitudinal direction of the resin injection hole h.
  • the resin injection groove 122a is formed in concave shape. In this way, the resin injection grooves 122a respectively formed in the nozzle pieces 222 and 224 are connected to each other when the nozzle pieces 222 and 224 are combined in the engagement position to form the resin injection holes h.
  • the resin injection hole h is combined so that the resin injection grooves 122a formed in the nozzle pieces 222 and 224 are connected to each other when the nozzle pieces 222 and 224 are combined in the coupling position, and thus the nozzle body 221. It is formed inside of.
  • one side of the nozzle body 221 composed of a plurality of nozzle pieces 222 and 224 is in communication with the manifold 110 (see FIG. 1), and the other side of the nozzle body 221 is the cavity plate 4 of the injection mold. It is installed to communicate with;
  • the resin injection hole h formed in the nozzle body 221 has a passage in which one side thereof communicates with the manifold 110 and the other side thereof communicates with the cavity plate in the nozzle body 221. .
  • the first coupling body 123 is coupled to one side of the nozzle body 221 and restrains one side of each nozzle piece 222 and 224 combined in a coupling position. Since the structure and function of the first assembly 123 are the same as in the above-described embodiment, a detailed description thereof will be omitted.
  • the fastening member 227 is fastened to the other side of the nozzle body 221 and couples the other side of the nozzle pieces 222 combined in the coupling position to each other.
  • a fastening hole n to which the fastening member 227 is fastened is formed in each nozzle piece 222, 224 so that the fastening member 227 may be fastened to the other side of the nozzle body 221.
  • the fastening holes n are formed to penetrate through the respective nozzle pieces 222 and 224, and the fastening holes n formed to penetrate the respective nozzle pieces 222 are thus connected to the nozzle pieces 222 and 224. It may be formed to be connected to each other when in a combined state.
  • the fastening member 227 may be fastened to the other side of the nozzle body 221 by passing through the fastening holes n connected to each other when the nozzle pieces 222 and 224 are combined to the engaged position.
  • the coupling between the fastening member 227 penetrating the fastening hole (n) and the nozzle body 221 may be made through a screw coupling.
  • the coupling between the fastening member 227 and the nozzle pieces 222 and 224 may be performed at a plurality of portions along the longitudinal direction of the nozzle body 221.
  • the groove portion 222b is formed concave in one of the nozzle pieces 222, the other one
  • the nozzle piece 224 of the protrusion 224b engaging with the groove portion 222b is formed to protrude.
  • the groove 222b and the protrusion 224b as described above are formed to have a length extending along the longitudinal direction of the nozzle pieces 222 and 224. In this way, the two nozzle pieces 222 and 224 each having the groove 222b and the protrusion 224b formed therein may be guided to a position combined with the coupling position by engaging the groove 222b and the protrusion 224b.
  • the two nozzle pieces 222 and 224 can be combined to the engaged position only by engaging the groove 222b and the protrusion 224b.
  • the groove 222b and the protrusion 224b are formed to be disposed outside the resin injection hole h.
  • the engagement structure formed by the groove portion 222b and the protrusion portion 224b formed as described above has an airtight structure that prevents resin introduced into the resin injection hole h from leaking through the coupling portion between the nozzle pieces 222 and 224. By being formed outside the resin injection hole h, the airtight performance of the nozzle 220 can be improved.
  • the nozzle pieces 222 and 224 may be guided to positions where the fastening holes n formed in the nozzle pieces 222 and 224 are connected to each other by engaging the grooves 222 b and the protrusions 224 b.
  • the two nozzle pieces 222 and 224 are combined in a coupling position, and the fastening holes n formed in the respective nozzle pieces 222 and 224 are connected to each other. To be guided to the location.
  • the fastening member 227 may be coupled to each other through the two nozzle pieces 222 and 224 combined at the coupling position through the fastening holes n connected to each other.
  • the fastening member 227 and the nozzle pieces 222 and 224 are coupled in a close contact with each other to form the nozzle body 221.
  • the coupling portion between the nozzle pieces 222 and 224 may be completely in close contact with each other, thereby ensuring the airtight performance of the nozzle 220. Can be further improved.
  • the nozzle 220 of the present embodiment has a resin structure through an airtight structure formed by the engagement of the groove 222b and the protrusion 224b, and a coupling structure formed by the fastening of the nozzle pieces 222,224 and the fastening member 227. Resin introduced into the injection hole (h) can provide an improved airtight performance to effectively block the leakage through the coupling portion between the nozzle pieces (222,224).
  • the nozzle 220 of the present embodiment may further include a temperature measuring unit 229 for measuring the temperature of the nozzle 220.
  • the temperature measuring unit 229 is illustrated as being provided in a form including a thermocouple contacting the nozzle body 221 and measuring the temperature of the nozzle 220.
  • the temperature of the nozzle 220 measured by the temperature measuring unit 229 is a heating coil (so as to maintain the temperature of the nozzle 220 at an appropriate temperature at which the resin flowing through the nozzle 220 does not harden or burn). 140 may be used as information for adjusting the operation.
  • an insertion groove 224c into which the temperature measuring part 229 is inserted is formed to be concave.
  • the temperature measuring unit 229 may be guided to the nozzle piece 224 through the insertion groove 224c formed as described above, and may be stably inserted and fixed to the outer surface of the nozzle piece 224. .

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

Disclosed is an invention relating to a hot runner apparatus for injection molding. The disclosed invention comprises: a manifold having a resin moving passage formed therein through which a resin moves; a nozzle having a resin injection hole formed therein and installed in the manifold such that the resin injection hole communicates with the resin moving passage, wherein the nozzle injects the resin introduced from the manifold into an injection mold; and an opening/closing part that opens and closes the nozzle, wherein the nozzle comprises: a nozzle main body having a plurality of removably coupled nozzle pieces that are combined in coupling positions, the nozzle main body being installed such that one side thereof communicates with the manifold and an opposite side thereof communicates with the injection mold; a first coupling body coupled to one side of the nozzle main body to restrict one side of each of the nozzle pieces that are combined in the coupling positions; and a second coupling body coupled to the opposite side of the nozzle main body to restrict an opposite side of each of the nozzle pieces that are combined in the coupling positions.

Description

사출성형용 핫러너 장치Injection Molding Hot Runner Device
본 발명은 사출성형용 핫러너 장치에 관한 것으로, 더욱 상세하게는 사출성형용 금형에 설치되는 사출성형용 핫러너 장치에 관한 것이다.The present invention relates to an injection molding hot runner device, and more particularly, to an injection molding hot runner device installed in an injection molding mold.
일반적으로 사출 금형은, 사출기에서 가열되어 용융화된 수지를 금형에 사출하여 냉각, 고화시킴으로써, 제품(사출물)을 성형하는 장치이다.In general, an injection mold is an apparatus for molding a product (injection product) by injecting a molten resin heated in an injection molding machine into a mold, cooling, and solidifying the same.
사출 성형이란 합성수지를 가공 성형하는 방법의 하나로서, 가열한 실린더 속에 열가소성 수지(熱可塑性樹脂)를 가열, 유동화하여 이것을 사출 램으로 금형 속에 넣고 플런저로 압입하여 사출하는 성형법을 말한다.Injection molding is a method of processing and molding a synthetic resin, and refers to a molding method in which a thermoplastic resin is heated and fluidized in a heated cylinder, and then injected into a mold by an injection ram and press-fitted into a plunger for injection.
이러한 사출 성형을 위한 종래의 사출성형기는, ,금형과 노즐이 단순 연결되어 있는 단순한 구조를 가진 것이 대부분이었다.In the conventional injection molding machine for such injection molding, most of them have a simple structure in which the mold and the nozzle are simply connected.
이러한 종래의 사출기에 따르면, 고온의 용융된 수지가 공급되면 열에 의한 각 부품이 팽창되어 부속이 손상되거나 연결부분이 벌어져 노즐이 아닌 다른 경로로 수지가 누출되는 등의 여러 가지 문제점이 발생하였고, 이에 따라 부품의 내구성이 급격히 저하되고 또한 생산되는 제품의 불량이 발생하는 경우가 빈번히 발생되었다.According to the conventional injection molding machine, when a high temperature molten resin is supplied, various components such as thermal expansion of each part are damaged and a connection part is opened and resin leaks through a path other than the nozzle, and thus, various problems occur. As a result, the durability of the parts is drastically lowered and the defects of the products produced frequently occur frequently.
이러한 문제점을 해결하기 위해, 최근의 사출성형기에는, 수지가 공급되는 수지 공급로를 구비하는 매니폴드(Manifold)를 가열하기 위한 구조로서 핫러너(Hot runner)가 구비되는 경우가 증가하고 있다.In order to solve this problem, the recent injection molding machine is increasing the case where the hot runner (Hot runner) is provided as a structure for heating the manifold (Manifold) having a resin supply passage to which the resin is supplied.
핫러너는, 융융된 수지를 사출 금형 내부로 주입할 때 수지의 온도를 고온으로 유지하면서 금형 내부에 고압으로 분사시키기 위한 장치로서, 복수개의 평판형 플레이트로 적층된 사출 금형의 내부에 설치된다.The hot runner is an apparatus for injecting the molten resin into the injection mold at a high pressure while maintaining the temperature of the resin at a high temperature, and is installed inside the injection mold laminated with a plurality of flat plate types.
이러한 핫러너는, 용융 수지를 여러 위치로 분할 공급하기 위한 매니폴드와, 매니폴드에 연결 설치되는 노즐, 및 노즐을 개폐시키는 실린더를 포함하는 형태로 구성된다.The hot runner is configured to include a manifold for dividing and supplying molten resin to various positions, a nozzle connected to the manifold, and a cylinder for opening and closing the nozzle.
본 발명의 배경기술은 대한민국 공개특허공보 제10-2014-0855933호(2008년 09월 02일 공개, 발명의 명칭 : 사출기용 핫 러너 시스템)에 개시되어 있다.Background art of the present invention is disclosed in Korean Unexamined Patent Publication No. 10-2014-0855933 (September 02, 2008, the name of the invention: hot runner system for injection molding machines).
본 발명은 경질 PVC와 같이 일정 온도를 벗어나거나 일정 시간이 경과하면 열분해(탄화)가 발생하여 사출성형 가능한 온도 범위가 좁은 수지에 대한 사출 작업성이 우수할 뿐 아니라, 유지보수가 용이하고, 유지보수에 소요되는 비용 및 시간을 절감할 수 있도록 구조가 개선된 사출성형용 핫러너 장치를 제공하는 데 그 목적이 있다.According to the present invention, thermal decomposition (carbonization) occurs after a certain temperature or a certain time elapses, such as hard PVC, so that not only the injection workability for the resin having a narrow injection molding temperature range is excellent, but also easy to maintain and maintain. The object of the present invention is to provide an injection molding hot runner device with an improved structure to reduce the cost and time required for repair.
본 발명에 따른 사출성형용 핫러너 장치는: 내부에 수지가 이동되는 수지이동통로가 형성되는 매니폴드와; 내부에 수지주입공이 형성되고, 상기 수지주입공이 상기 수지이동통로와 연통되도록 상기 매니폴드에 설치되며, 상기 매니폴드로부터 유입되는 수지를 사출 금형에 주입하는 노즐; 및 상기 노즐을 개폐하는 개폐부를 포함하고, 상기 노즐은, 분리 가능하게 결합되는 복수개의 노즐편이 결합위치로 조합되어 이루어지며, 일측이 상기 매니폴드에 연통되고 타측이 상기 사출 금형에 연통되도록 설치되는 노즐본체; 및 상기 노즐본체의 일측에 결합되어 상기 결합위치로 조합된 각각의 상기 노즐편의 일측을 구속하는 제1결합체를 포함한다.An injection molding hot runner device according to the present invention includes: a manifold in which a resin moving passage through which a resin is moved is formed; A resin injection hole is formed therein, and the resin injection hole is installed in the manifold such that the resin injection hole communicates with the resin movement passage, and a nozzle for injecting resin flowing from the manifold into an injection mold; And an opening and closing part for opening and closing the nozzle, wherein the nozzle is formed by combining a plurality of nozzle pieces detachably coupled to a coupling position, and one side is installed to be in communication with the manifold and the other side is in communication with the injection mold. Nozzle body; And a first assembly coupled to one side of the nozzle body and constraining one side of each nozzle piece combined to the engagement position.
또한 상기 노즐편에는, 수지주입홈이 오목하게 형성되고; 상기 수지주입공은, 복수개의 상기 노즐편이 상기 결합위치로 조합될 때 상기 복수개의 수지주입공이 조합되어 상기 노즐본체의 내부에 형성되는 것이 바람직하다.Further, the nozzle piece is formed with a resin injection groove concave; The resin injection hole is preferably formed inside the nozzle body by combining the plurality of resin injection holes when a plurality of the nozzle pieces are combined to the engaging position.
또한 상기 제1결합체는, 상기 노즐본체의 외주면을 감싸도록 상기 노즐본체의 일측에 억지 끼움되어 상기 결합위치로 조합된 각각의 상기 노즐편의 일측을 서로 밀착되는 방향으로 가압하는 것이 바람직하다.In addition, the first assembly, it is preferable to press the one side of each of the nozzle pieces combined to one side of the nozzle body to be coupled to the coupling position to surround the outer peripheral surface of the nozzle body in a close contact with each other.
또한 상기 노즐본체의 일측 외주면에는, 상기 제1결합체가 슬라이딩되며 억지 끼움되는 끼움결합부가 형성되고; 상기 끼움결합부는, 상기 제1결합체가 슬라이딩되며 억지 끼움되는 방향을 따라 둘레 길이가 점차 확장되도록 테이퍼지게 형성되는 것이 바람직하다.In addition, one side outer circumferential surface of the nozzle body, the first coupling is provided with a fitting coupling portion for sliding and fitting; The fitting coupling portion is preferably formed to be tapered so that the circumferential length gradually expands along the direction in which the first coupling slides and is inserted.
또한 상기 노즐은, 상기 노즐본체의 타측에 결합되어 상기 결합위치로 조합된 각각의 상기 노즐편의 타측을 구속하는 제2결합체를 더 포함하는 것이 바람직하다.The nozzle may further include a second coupling body coupled to the other side of the nozzle body and restraining the other side of each nozzle piece combined at the coupling position.
또한 상기 제2결합체는, 상기 노즐본체를 감싸며 상기 노즐본체의 타측과 결합되어 상기 결합위치로 조합된 각각의 노즐편의 타측을 고정시키는 것이 바람직하다.In addition, it is preferable that the second coupling body surrounds the nozzle body and is coupled with the other side of the nozzle body to fix the other side of each nozzle piece combined at the coupling position.
또한 상기 노즐본체의 타측 외주면에는, 나사결합부가 형성되고; 상기 제2결합체는, 상기 결합위치로 조합된 각각의 상기 노즐편을 감싸며 수용하는 커버부와, 상기 커버부의 내주면에 형성되어 상기 나사결합부와 결합되는 커버결합부를 포함하는 것이 바람직하다.In addition, a screw engaging portion is formed on the other outer peripheral surface of the nozzle body; Preferably, the second coupling member includes a cover portion that surrounds and accommodates each of the nozzle pieces combined at the coupling position, and a cover coupling portion formed on an inner circumferential surface of the cover portion and engaged with the screw coupling portion.
또한 본 발명은 상기 노즐에 설치되어 상기 노즐을 가열하는 가열코일을 더 포함하는 것이 바람직하다.In addition, the present invention preferably further comprises a heating coil installed in the nozzle to heat the nozzle.
또한 상기 노즐은, 상기 노츨본체의 타측에 체결되어 상기 결합위치로 조합된 복수개의 상기 노즐편을 결합시키는 체결부재를 더 포함하고; 각각의 상기 노즐편에는, 상기 체결부재가 체결되는 체결공이 관통되게 형성되는 것이 바람직하다.The nozzle may further include a fastening member coupled to the other side of the notch body to engage the plurality of nozzle pieces combined at the engagement position; Each of the nozzle pieces is preferably formed so that the fastening hole through which the fastening member is fastened.
또한 상기 노즐본체는, 분리 가능하게 결합되는 두개의 노즐편이 상기 결합위치로 조합되어 이루어지고; 두개의 상기 노즐편 중 어느 하나의 상기 노즐편에는, 홈부가 상기 노즐편의 길이방향을 따라 연장되는 길이를 갖도록 오목하게 형성되고; 두개의 상기 노즐편 중 다른 하나의 상기 노즐편에는, 상기 홈부와 맞물리는 돌기부가 상기 노즐편의 길이방향을 따라 연장되는 길이를 갖도록 돌출되게 형성되는 것이 바람직하다.In addition, the nozzle body is made of a combination of two nozzle pieces detachably coupled to the coupling position; The nozzle piece of any one of the two nozzle pieces is formed so as to have a groove portion having a length extending in the longitudinal direction of the nozzle piece; It is preferable that the projection part which engages with the said groove part protrudes in the said nozzle piece of the other of two said nozzle pieces so that it may have a length extended along the longitudinal direction of the said nozzle piece.
또한 상기 홈부와 상기 돌기부는, 상기 수지주입공의 외측에 배치되도록 형성되는 것이 바람직하다.In addition, the groove portion and the protrusion is preferably formed to be disposed outside the resin injection hole.
또한 두개의 상기 노즐편은, 상기 홈부와 상기 돌기부의 맞물림에 의해 상기 결합위치로 조합되는 위치로 안내되는 것이 바람직하다.In addition, it is preferable that the two nozzle pieces are guided to the position combined with the engaging position by the engagement of the groove portion and the projection portion.
또한 두개의 상기 노즐편은, 상기 홈부와 상기 돌기부의 맞물림에 의해 각각의 상기 노즐편에 형성된 상기 체결공이 서로 연결되는 위치로 안내되는 것이 바람직하다.In addition, it is preferable that the two nozzle pieces are guided to a position where the fastening holes formed in the nozzle pieces are connected to each other by engaging the groove portion and the protrusion portion.
또한 본 발명은 상기 노즐의 온도를 측정하는 온도측정부를 더 포함하고; 상기 노즐편 중 어느 하나에는, 상기 온도측정부가 삽입되는 삽입홈이 오목하게 형성되는 것이 바람직하다.The present invention also includes a temperature measuring unit for measuring the temperature of the nozzle; In one of the nozzle pieces, the insertion groove into which the temperature measuring part is inserted is preferably formed to be concave.
본 발명의 사출성형용 핫러너 장치에 따르면, 노즐이 복수개의 노즐편으로 분리될 수 있도록 하는 구성을 취함으로써, 노즐 내부에서 수지가 타버려 수지주입공이 막히더라도 노즐을 분리하여 수지주입공을 막고 있는 잔여물을 쉽게 제거할 수 있으므로, 사출 작업성이 우수할 뿐 아니라, 경질 PVC와 같이 용융시 점도가 높고 수지로 용융되는 온도 범위가 좁아 타기 쉬운 수지를 이용한 사출 작업에도 효과적으로 사용이 가능한 이점이 있다.According to the injection molding hot runner device of the present invention, the nozzle can be separated into a plurality of nozzle pieces, so that even if the resin is burned in the nozzle and the resin injection hole is blocked, the nozzle is separated to block the resin injection hole. It is easy to remove the residues, so it is not only excellent in injection workability but also has high viscosity when melted like hard PVC and the temperature range that is melted into resin is narrow, so it can be effectively used for injection work using flammable resin. have.
또한 본 발명은 홈부와 돌기부의 맞물림에 의해 형성되는 기밀 구조와 노즐편과 체결부재의 체결에 의해 이루어지는 결합 구조를 통해, 수지주입공으로 유입된 수지가 노즐편 간의 결합부위를 통해 새어나가는 것을 효과적으로 차단할 수 있도록 향상된 기밀 성능을 제공할 수 있다.In another aspect, the present invention through the airtight structure formed by the engagement of the groove portion and the projection portion and the coupling structure formed by the fastening of the nozzle piece and the fastening member, it is possible to effectively block leakage of resin introduced into the resin injection hole through the coupling portion between the nozzle piece. Can provide improved confidentiality.
도 1은 본 발명의 일 실시예에 따른 사출성형용 핫러너 장치의 구조를 개략적으로 보여주는 도면이다.1 is a view schematically showing the structure of an injection molding hot runner device according to an embodiment of the present invention.
도 2는 본 발명의 일 실시예에 따른 노즐을 도시한 사시도이다.2 is a perspective view showing a nozzle according to an embodiment of the present invention.
도 3은 본 발명의 일 실시예에 따른 노즐을 분해하여 도시한 분해사시도이다.3 is an exploded perspective view illustrating an exploded nozzle according to an embodiment of the present invention.
도 4는 본 발명의 일 실시예에 따른 노즐의 단면을 도시한 단면도이다.4 is a cross-sectional view showing a cross section of a nozzle according to an embodiment of the present invention.
도 5는 본 발명의 다른 실시예에 따른 노즐을 분해하여 도시한 분해사시도이다.5 is an exploded perspective view showing the exploded nozzle according to another embodiment of the present invention.
도 6은 본 발명의 다른 실시예에 따른 노즐편을 분해하여 도시한 분해사시도이다.6 is an exploded perspective view illustrating an exploded view of the nozzle piece according to another embodiment of the present invention.
도 7은 본 발명의 다른 실시예에 따른 노즐의 단면을 도시한 단면도이다.7 is a cross-sectional view showing a cross section of a nozzle according to another embodiment of the present invention.
이하, 첨부된 도면들을 참조하여 본 발명에 따른 사출성형용 핫러너 장치의 일 실시예를 설명한다. 설명의 편의를 위해 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다. 또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 그러므로 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.Hereinafter, an embodiment of an injection molding hot runner device according to the present invention will be described with reference to the accompanying drawings. For convenience of description, the thicknesses of the lines and the size of the elements shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.
도 1은 본 발명의 일 실시예에 따른 사출성형용 핫러너 장치의 구조를 개략적으로 보여주는 도면이고, 도 2는 본 발명의 일 실시예에 따른 노즐을 도시한 사시도이다. 또한 도 3은 본 발명의 일 실시예에 따른 노즐을 분해하여 도시한 분해사시도이고, 도 4는 본 발명의 일 실시예에 따른 노즐의 단면을 도시한 단면도이다.1 is a view schematically showing the structure of an injection molding hot runner device according to an embodiment of the present invention, Figure 2 is a perspective view showing a nozzle according to an embodiment of the present invention. 3 is an exploded perspective view showing an exploded nozzle according to an embodiment of the present invention, Figure 4 is a cross-sectional view showing a cross section of the nozzle according to an embodiment of the present invention.
도 1 및 도 2를 참조하면, 본 발명의 일 실시예에 따른 사출성형용 핫러너 장치(100)는, 복수개의 평판형 플레이트로 적층된 사출 금형, 즉 클램핑 플레이트(1), 스페이스 플레이트(2), 홀딩 플레이트(3), 캐비티 플레이트(4)이 적층되어 이루어지는 사출 금형의 내부에 설치되며, 매니폴드(110)와, 노즐(120) 및 개폐부(130)를 포함한다.1 and 2, the injection molding hot runner device 100 according to an embodiment of the present invention, the injection mold, that is, the clamping plate 1, the space plate (2) laminated with a plurality of flat plate ), The holding plate 3 and the cavity plate 4 are installed in the injection mold formed by lamination, and include a manifold 110, a nozzle 120, and an opening and closing unit 130.
매니폴드(110)는, 스페이스 플레이트(2) 내부에 설치되며, 사출기를 통해 공급되는 수지를 히터(미도시)를 이용하여 가열하며 고온으로 유지시킨다. 이러한 매니폴드(110)의 내부에는, 복수개의 수지이동통로(111)가 격자형 형태로 형성된다.The manifold 110 is installed inside the space plate 2 and keeps the resin supplied through the injection machine at a high temperature while using a heater (not shown). Inside the manifold 110, a plurality of resin movement passages 111 are formed in a lattice form.
사출기를 통해 매니폴드(110)로 공급되는 수지는 수지이동통로(111)를 통해 매니폴드(110)의 내부를 이동하여 노즐(120)로 공급되며, 수지이동통로(111)의 형태는, 사출 금형의 체적 및 사출조건에 따라 그 크기와 위치가 다르게 결정될 수 있다.Resin supplied to the manifold 110 through the injection machine is supplied to the nozzle 120 by moving the inside of the manifold 110 through the resin movement passage 111, the shape of the resin movement passage 111, injection The size and position of the mold may be determined differently according to the volume and injection conditions of the mold.
노즐(120)은, 매니폴드(110)를 통과한 수지가 고형화되지 않도록 보온시키며, 매니폴드(110)를 통해 공급된 수지를 사출 금형의 내부로 토출시키는 통로 역할을 한다.The nozzle 120 keeps the resin passing through the manifold 110 not to solidify, and serves as a passage for discharging the resin supplied through the manifold 110 into the injection mold.
이러한 노즐(120)의 내부에는, 매니폴드(110)를 통해 공급된 수지를 사출 금형 내부로 토출시키는 통로를 이루는 수지주입공(h)이 형성된다.In the nozzle 120, a resin injection hole h that forms a passage for discharging the resin supplied through the manifold 110 into the injection mold is formed.
그리고 이처럼 내부에 수지주입공(h)이 형성된 노즐(120)은, 수지주입공(h)이 수지이동통로(111)와 연통되도록 매니폴드(110)에 설치되며, 매니폴드(110)로부터 유입되는 수지를 사출 금형, 좀 더 구체적으로는 캐비티 플레이트(4)에 주입한다.The nozzle 120 having the resin injection hole h formed therein is installed in the manifold 110 such that the resin injection hole h communicates with the resin movement passage 111, and flows in from the manifold 110. The resin to be injected is injected into an injection mold, more specifically, the cavity plate 4.
이러한 노즐(120)의 일측은 매니폴드(110)의 수지이동통로(111)와 연통되고, 노즐(120)의 타측은 캐비티 플레이트(4)와 연통되도록 설치된다.One side of the nozzle 120 is in communication with the resin movement passage 111 of the manifold 110, the other side of the nozzle 120 is installed to communicate with the cavity plate (4).
개폐부(130)는, 노즐(120)을 개폐하도록 구비된다. 본 실시예에서, 개폐부(130)는 피스톤(131)과 실린더(133)를 포함하는 형태로 구비되는 것으로 예시된다.The opening and closing portion 130 is provided to open and close the nozzle 120. In this embodiment, the opening and closing portion 130 is illustrated as being provided in a form including a piston 131 and the cylinder 133.
노즐(120)을 통한 수지의 토출은, 노즐(120)의 타측 단부가 캐비티 플레이트(4)의 표면에 고정된 상태에서 이루어지며, 토출되는 수지의 양은 실린더(133) 내부에 설치된 피스톤(131)의 승강 작용에 의해 조절된다.Discharge of the resin through the nozzle 120 is performed while the other end of the nozzle 120 is fixed to the surface of the cavity plate 4, and the amount of resin discharged is the piston 131 installed inside the cylinder 133. It is controlled by the lifting action of.
이때 피스톤(131)의 승강은 실린더(131) 내부에 형성된 에어라인(미도시)을 통해 공급되는 공압에 의해 이루어지며, 피스톤(131)의 승강 거리에 따라 노즐(120)을 통해 토출되는 수지의 양을 조절할 수 있게 된다.At this time, the lifting of the piston 131 is made by pneumatic pressure supplied through an air line (not shown) formed in the cylinder 131, and the resin discharged through the nozzle 120 according to the lifting distance of the piston 131. The amount can be adjusted.
한편, 도 3 및 도 4를 참조하면, 노즐(120)은, 노즐본체(121)와 제1결합체(123) 및 제2결합체(125)를 포함한다.Meanwhile, referring to FIGS. 3 and 4, the nozzle 120 includes a nozzle body 121, a first coupling body 123, and a second coupling body 125.
노즐본체(121)는, 분리 가능하게 결합되는 복수개의 노즐편(122)이 결합위치로 조합되어 이루어진다. 본 실시예에서는, 두 개의 노즐편(122)이 결합위치로 조합되어 노즐본체(121)가 이루어지는 것으로 예시된다.The nozzle body 121 is composed of a plurality of nozzle pieces 122 that are detachably coupled to each other at a coupling position. In the present embodiment, it is illustrated that the nozzle body 121 is composed of two nozzle pieces 122 are combined in the engaging position.
각각의 노즐편(122)은, 노즐본체(121)의 일부를 이루는 형상을 갖도록 형성된다. 본 실시예에서는, 각각의 노즐편(122)이 노즐본체(121)를 수지주입공(h)의 길이방향에 따라 연장되는 가상선을 중심으로 두 부분으로 절개한 형태로 형성되고, 이와 같이 절개된 형태의 두 노즐편(122)이 서로 대칭을 이루는 형태로 형성되는 것으로 예시된다.Each nozzle piece 122 is formed to have a shape that forms part of the nozzle body 121. In this embodiment, each nozzle piece 122 is formed in a shape in which the nozzle body 121 is cut into two parts around an imaginary line extending along the longitudinal direction of the resin injection hole h, and thus cut out. It is exemplified that the two nozzle pieces 122 of the formed shape are formed to be symmetrical with each other.
상기와 같이 형성되는 각각의 노즐편(122)에는, 수지주입홈(122a)이 오목하게 형성된다. 이와 같이 각각의 노즐편(122)에 형성된 각각의 수지주입홈(122a)은, 노즐편(122)이 결합위치로 조합될 때 서로 연결되어 수지주입공(h)을 형성하게 된다.In each nozzle piece 122 formed as described above, a resin injection groove 122a is formed concave. As described above, each resin injection groove 122a formed in each nozzle piece 122 is connected to each other when the nozzle pieces 122 are combined at a coupling position to form a resin injection hole h.
즉 수지주입공(h)은, 복수개의 노즐편(122)이 결합위치로 조합될 때, 각 노즐편(122)에 각각 형성된 수지주입홈(122a)이 서로 연결되도록 조합되어 노즐본체(121)의 내부에 형성된다.That is, the resin injection hole h is combined so that the resin injection grooves 122a respectively formed in the nozzle pieces 122 are connected to each other when the plurality of nozzle pieces 122 are combined at the coupling position, so that the nozzle body 121 is connected to each other. It is formed inside of.
상기와 같이 복수개의 노즐편(122)의 조합으로 이루어지는 노즐본체(121)의 일측은 매니폴드(110; 도 1 참조)에 연통되고, 노즐본체(121)의 타측은 사출 금형의 캐비티 플레이트(4; 도 4 참조)와 연통되도록 설치된다.As described above, one side of the nozzle body 121 formed of a combination of the plurality of nozzle pieces 122 communicates with the manifold 110 (see FIG. 1), and the other side of the nozzle body 121 is the cavity plate 4 of the injection mold. It is installed to communicate with;
이에 따라 수지주입공(h)은, 그 일측이 매니폴드(110)에 연통되고 그 타측이 캐비티 플레이트(4)와 연통되는 통로를 노즐본체(121)의 내부에 형성하게 된다.Accordingly, the resin injection hole h has a passage in which one side thereof communicates with the manifold 110 and the other side thereof communicates with the cavity plate 4 in the nozzle body 121.
제1결합체(123)는, 노즐본체(121)의 일측에 결합되어 결합위치로 조합된 각각의 노즐편(122)의 일측을 구속한다.The first coupling body 123 is coupled to one side of the nozzle body 121 and restrains one side of each nozzle piece 122 combined at the coupling position.
본 실시예에서, 제1결합체(123)는 노즐본체(121)의 외주면을 감싸는 링 형태로 형성되는 것으로 예시된다. 이러한 제1결합체(123)는, 노즐본체(121)의 외주면을 감싸도록 노즐본체(121)의 일측에 억지 끼움됨으로써, 결합위치로 조합된 각각의 노즐편(122)의 일측을 서로 밀착되는 방향으로 가압한다.In the present embodiment, the first assembly 123 is illustrated as being formed in a ring shape surrounding the outer circumferential surface of the nozzle body 121. The first coupling body 123 is forcibly fitted to one side of the nozzle body 121 so as to surround the outer circumferential surface of the nozzle body 121, so that one side of each nozzle piece 122 combined at the coupling position is in close contact with each other. Pressurize
상기와 같은 제1결합체(123)가 결합되는 노즐본체(121)의 일측 외주면에는, 제1결합체(123)가 슬라이딩되며 억지 끼움되는 끼움결합부(121a)가 형성된다.On the outer circumferential surface of one side of the nozzle body 121 to which the first coupling body 123 as described above is fitted, a fitting coupling portion 121a is formed in which the first coupling body 123 slides and is forcibly fitted.
끼움결합부(121a)는, 제1결합체(123)가 슬라이딩되며 억지 끼움되는 방향을 따라 둘레 길이가 점차 확장되도록, 즉 노즐본체(121)의 길이방향을 따라 노즐본체(121)의 일측에서 노즐본체(121)의 타측으로 갈수록 둘레 길이가 점차 확장되도록 테이퍼지게 형성된다.The fitting portion 121a has a nozzle at one side of the nozzle body 121 along the longitudinal direction of the nozzle body 121 so that the circumferential length gradually expands along the direction in which the first coupling body 123 slides and is fitted. It is formed to be tapered so that the circumferential length gradually expands toward the other side of the main body 121.
이와 같이 노즐본체(121)의 일측 외주면에 형성된 끼움결합부(121a)에 결합되는 제1결합체(123)는, 노즐본체(121)의 일측에서 끼움결합부(121a)를 따라 노즐본체(121)의 타측을 향해 슬라이딩 이동될수록 더욱 강한 힘으로 각각의 노즐편(122)을 서로 밀착되는 방향으로 가압함으로써, 노즐본체(121)의 일측을 강한 가압력으로 안정적으로 구속할 수 있다.In this way, the first coupling body 123 coupled to the fitting portion 121a formed at one outer circumferential surface of the nozzle body 121 is along the fitting portion 121a at one side of the nozzle body 121 and along the nozzle body 121. As the sliding movement toward the other side of the pressing the nozzle piece 122 in a direction in close contact with each other with a stronger force, one side of the nozzle body 121 can be restrained stably with a strong pressing force.
제2결합체(125)는, 노즐본체(121)의 타측에 결합됨으로써, 결합위치로 조합된 각각의 노즐편(122)의 타측을 구속한다. 이러한 제2결합체(125)는, 노즐본체(121)를 감싸며 노즐본체(121)의 타측과 결합됨으로써, 결합위치로 조합된 각각의 노즐편(122)의 타측을 고정시킨다.The second coupling body 125 is coupled to the other side of the nozzle body 121 to restrain the other side of each nozzle piece 122 combined at the coupling position. The second coupling body 125 surrounds the nozzle body 121 and is coupled to the other side of the nozzle body 121 to fix the other side of each nozzle piece 122 combined at the coupling position.
본 실시예에서는, 노즐본체(121)의 타측 외주면에 나사산을 포함하는 형태로 이루어지는 나사결합부(121b)가 형성되고, 제2결합체(125)가 커버부(125a)와 커버결합부(125b)를 포함하는 형태로 구비되는 것으로 예시된다.In the present embodiment, a screw engaging portion 121b having a screw thread is formed on the other outer circumferential surface of the nozzle body 121, and the second coupling body 125 includes a cover portion 125a and a cover coupling portion 125b. Illustrated as being provided in a form comprising a.
이에 따르면, 커버부(125a)는 노즐본체(121)의 외경에 대응되는 내경을 갖도록 형성된 파이프 형태로 이루어진다. 이와 같이 형성되는 커버부(125a)는, 노즐본체(121)를 감싸며, 결합위치로 조합된 각각의 노즐편(122)를 내부에 수용한다.According to this, the cover portion 125a is formed in a pipe shape formed to have an inner diameter corresponding to the outer diameter of the nozzle body 121. The cover portion 125a formed as described above surrounds the nozzle body 121 and accommodates each nozzle piece 122 combined at a coupling position therein.
그리고 상기와 같이 형성되는 커버부(125a)의 내주면에는, 커버결합부(125b)가 나사산을 포함하는 형태로 형성된다. 이처럼 형성되는 커버결합부(125b)는, 커버부(125a)의 내부에서 나사결합부(121b)와 나사 결합을 통해 결합된다.The cover coupling portion 125b is formed on the inner circumferential surface of the cover portion 125a formed as described above in a form including a screw thread. The cover coupling portion 125b thus formed is coupled to the screw coupling portion 121b through a screw coupling in the cover portion 125a.
이와 같은 나사결합부(121b)와 커버결합부(125b)의 나사 결합을 통해, 각각의 노즐편(122)의 타측이 제2결합체(125)에 의해 고정된다.Through the screw coupling of the screw coupling portion 121b and the cover coupling portion 125b, the other side of each nozzle piece 122 is fixed by the second coupling body 125.
상기와 같은 커버부(125a)와 커버결합부(125b)로 이루어진 제2결합체(125)는, 결합위치로 조합된 복수개의 노즐편(122)을 내부에 수용하며 그 각각의 노즐편(122)의 타측을 고정시킴으로써, 복수개의 노즐편(122)이 결합위치로 조합되어 이루어진 노즐본체(121)의 타측을 안정적으로 구속할 수 있다.The second coupling body 125 including the cover part 125a and the cover coupling part 125b as described above accommodates the plurality of nozzle pieces 122 combined at the engaging positions therein, and each nozzle piece 122 is provided therein. By fixing the other side, the other side of the nozzle body 121 formed by combining the plurality of nozzle pieces 122 in the engaging position can be restrained stably.
한편 본 실시예의 사출성형용 핫러너 장치(100)는, 가열코일(140)을 더 포함할 수 있다. 가열코일(140)은, 노즐본체(121)의 외측에 노즐본체(121)와 접촉되게 설치되어 노즐(120)을 가열함으로써, 노즐(120)을 통해 사출 금형 내부로 주입되는 수지의 온도가 설정된 온도로 유지되도록 하는 역할을 한다.Meanwhile, the injection molding hot runner device 100 may further include a heating coil 140. The heating coil 140 is installed outside the nozzle body 121 to be in contact with the nozzle body 121 and heats the nozzle 120 to set the temperature of the resin injected into the injection mold through the nozzle 120. It serves to maintain the temperature.
미설명된 부호 145는, 가열코일(140)이 외부로 노출되지 않게 가열코일(140)을 커버하도록 가열코일(140)의 외측에 설치되는 코일커버를 가리킨다. Unexplained reference numeral 145 indicates a coil cover installed outside the heating coil 140 to cover the heating coil 140 so that the heating coil 140 is not exposed to the outside.
이하, 본 실시예에 따른 사출성형용 핫러너 장치(100)의 작용, 효과에 대하여 설명한다.Hereinafter, the operation and effects of the injection molding hot runner device 100 according to the present embodiment will be described.
본 실시예의 사출성형용 핫러너 장치(100)에 따르면, 노즐(120)의 내부에는 수지주입공(h)이 형성되고, 사출기를 통해 매니폴드(110)로 공급되는 수지는 수지이동통로(111; 도 1 참조)를 통해 매니폴드(110)의 내부를 이동하여 노즐(120)로 공급된다. 그리고 노즐(120)로 공급되는 수지는, 상기와 같이 노즐(120)의 내부에 형성된 수지주입공(h)을 통해 사출 금형의 캐비티 플레이트(4)의 내부로 주입된다.According to the injection molding hot runner device 100 of the present embodiment, a resin injection hole h is formed in the nozzle 120, and the resin supplied to the manifold 110 through the injection machine is a resin movement passage 111. 1, the inside of the manifold 110 is moved and supplied to the nozzle 120. The resin supplied to the nozzle 120 is injected into the cavity plate 4 of the injection mold through the resin injection hole h formed in the nozzle 120 as described above.
이 과정에서 노즐(120)은, 매니폴드(110)를 통과한 수지가 고형화되지 않도록 보온시키며, 매니폴드(110)를 통해 공급된 수지를 사출 금형의 내부로 토출시키는 통로 역할을 한다.In this process, the nozzle 120 keeps the resin passing through the manifold 110 not to solidify, and serves as a passage for discharging the resin supplied through the manifold 110 into the injection mold.
이때 노즐(120)을 통과하는 수지의 온도 수지의 용융 조건보다 낮을 경우 수지가 노즐(120) 내부에서 고형화될 수 있고, 노즐(120)을 통과하는 수지의 온도 수지의 용융 조건보다 지나치게 높을 경우 수지가 노즐(120) 내부에서 타버릴 수 있다.In this case, when the temperature of the resin passing through the nozzle 120 is lower than the melting condition of the resin, the resin may be solidified inside the nozzle 120, and when the temperature of the resin passing through the nozzle 120 is too high than the melting condition of the resin. May burn inside the nozzle 120.
특히 경질 PVC는, 절연성, 내식성, 내약품성 등이 우수한 장점이 있는 반면, 용융시 점도가 높고, Melting Point(Tm)이 존재하지 않아 일정 온도를 벗어나거나 일정 시간이 경과하면 탄화 현상이 발생하여 사출성형이 가능한 온도 범위가 좁으므로, PP와 같은 타 결정성 플라스틱 소재에 비해 사출성형이 어렵다.In particular, rigid PVC has excellent advantages such as insulation, corrosion resistance, chemical resistance, etc., but has high viscosity when melted, and no melting point (Tm) exists so that carbonization occurs after a certain temperature or after a certain time has elapsed. Since the moldable temperature range is narrow, injection molding is more difficult than other crystalline plastic materials such as PP.
따라서 경질 PVC를 원료로 하여 사출 성형을 수행하는 경우에는, 노즐(120)을 통해 주입되는 수지의 온도 조절이 쉽지 않으며, 노즐(120)을 통과하는 수지가 고형화되거나 타버릴 경우 노즐(120)의 막힘이 발생되어 수지의 주입이 제대로 이루어지지 않는 현상이 발생될 수 있다.Therefore, when performing injection molding using the hard PVC as a raw material, it is not easy to control the temperature of the resin injected through the nozzle 120, and when the resin passing through the nozzle 120 becomes solid or burned out, A blockage may occur and a phenomenon in which the resin is not injected properly may occur.
상기와 같이 노즐(120)의 막힘이 발생될 경우, 노즐(120) 내부의 수지주입공(h)에 고형화되거나 타서 붙어버린 수지를 제거하여 막힌 노즐(120)을 뚫어주어야 한다.If the blockage of the nozzle 120 occurs as described above, it is necessary to remove the resin solidified or burned in the resin injection hole (h) inside the nozzle 120 to puncture the blocked nozzle (120).
본 실시예에 따르면, 노즐(120)은 복수개의 노즐편(122)이 결합되어 이루어지는 노즐본체(121)의 일측과 타측을 제1결합체(123)와 제2결합체(125)로 각각 고정시킴으로써 조립되는 형태로 구비된다.According to the present embodiment, the nozzle 120 is assembled by fixing one side and the other side of the nozzle body 121 to which the plurality of nozzle pieces 122 are coupled with the first coupling body 123 and the second coupling body 125, respectively. It is provided in the form.
즉 노즐(120)은, 제1결합체(123)와 제2결합체(125)를 각각 노즐본체(121)로부터 분리시키면, 노즐본체(121)가 복수개의 노즐편(122)으로 분리되는 형태로 이루어진다.That is, when the nozzle 120 separates the first assembly 123 and the second assembly 125 from the nozzle body 121, the nozzle body 121 is formed into a plurality of nozzle pieces 122. .
그리고 이와 같이 노즐본체(121)가 복수개의 노즐편(122)으로 분리되면, 노즐(120) 내부의 수지주입공(h)이 각각의 노즐편(122)에 수지주입홈(122a) 형태로 외부로 노출될 수 있는 형태로 이루어진다.When the nozzle body 121 is separated into the plurality of nozzle pieces 122 in this way, the resin injection hole h inside the nozzle 120 is external to each nozzle piece 122 in the form of a resin injection groove 122a. It is made in a form that can be exposed to.
이와 같이 노즐(120) 내부의 수지주입공(h)이 각각의 노즐편(122)에 수지주입홈(122a) 형태로 외부로 노출되면, 수지주입공(h)에 고형화되거나 타서 붙어버린 수지를 쉽게 제거할 수 있게 되므로, 노즐(120)의 유지보수가 매우 용이해지고, 노즐(120)의 유지보수에 소요되는 시간을 절감할 수 있게 된다.When the resin injection hole h in the nozzle 120 is exposed to the nozzle injection hole 122 in the form of a resin injection groove 122a, the resin solidified or burned in the resin injection hole h is removed. Since it can be easily removed, the maintenance of the nozzle 120 is very easy, and the time required for the maintenance of the nozzle 120 can be reduced.
또한 노즐편(122)의 일부가 수지주입공(h)에 고형화되거나 타서 붙어버린 수지로 인해 회복 불가능하게 훼손되거나 파손된 경우, 노즐(120) 전체를 교체할 필요 없이 훼손 또는 파손된 해당 노즐편(122)만을 교체하면 되므로, 노즐(120)의 유지보수에 소요되는 비용을 절감할 수 있게 된다.In addition, when a part of the nozzle piece 122 is irreparably damaged or damaged due to the resin solidified or burned in the resin injection hole h, the nozzle piece damaged or broken without having to replace the entire nozzle 120. Since only 122 may be replaced, the cost required for the maintenance of the nozzle 120 may be reduced.
즉 본 실시예의 노즐(120)은, 노즐(120)의 막힘으로 인한 장기간의 작업 중단 발생과 유지보수 시간 및 비용에 대한 부담을 감소시킬 수 있도록 구비되므로, 경질 PVC와 같이 용융시 점도가 높고 사출성형이 가능한 온도 범위가 좁아 타기 쉬운 수지를 이용한 사출 작업에도 매우 효과적으로 사용이 가능한 이점을 제공한다.That is, the nozzle 120 of the present embodiment is provided to reduce the burden on long-term work interruption and maintenance time and costs due to clogging of the nozzle 120, and thus high viscosity during melting and injection such as hard PVC The narrow moldable temperature range offers the advantage of very effective use in injection molding with flammable resins.
상기한 바와 같은 구성의 노즐(120)을 구비하는 본 실시예의 사출성형용 핫러너 장치(100)는, 노즐(120)이 복수개의 노즐편(122)으로 분리될 수 있도록 하는 구성을 취함으로써, 노즐(120) 내부에서 수지가 타버려 수지주입공(h)이 막히더라도 노즐(120)을 분리하여 수지주입공(h)을 막고 있는 잔여물을 쉽게 제거할 수 있으므로, 경질 PVC와 같이 사출성형이 가능한 온도 범위가 좁아 타기 쉬운 수지에 대한 사출 작업성이 우수한 효과가 있다.The injection molding hot runner device 100 of the present embodiment including the nozzle 120 having the above-described configuration has a configuration such that the nozzle 120 can be separated into a plurality of nozzle pieces 122. Even if the resin injection hole (h) is blocked by the resin inside the nozzle 120, the nozzle 120 can be separated to easily remove the residue blocking the resin injection hole (h). Since this possible temperature range is narrow, the injection workability with respect to the easily burnable resin is excellent.
또한 본 실시예의 사출성형용 핫러너 장치(100)는, 노즐(120)이 복수개의 노즐편(122)으로 분리될 수 있도록 하는 구성을 취함으로써, 유지보수 작업을 용이하게 할 뿐 아니라, 유지보수에 소요되는 비용 및 시간을 절감할 수 있는 효과를 제공한다.In addition, the injection molding hot runner device 100 of the present embodiment has a configuration that allows the nozzle 120 to be separated into a plurality of nozzle pieces 122, thereby facilitating maintenance work and maintaining maintenance. It can reduce the cost and time required.
여기서, 상기와 같은 구성의 노즐(200)는 본 발명의 바람직한 일 실시예에 불과할 뿐이고, 이들을 대체할 수 있는 다양한 실시예가 있을 수 있다.Here, the nozzle 200 of the above configuration is only one preferred embodiment of the present invention, there may be various embodiments that can replace them.
도 5는 본 발명의 다른 실시예에 따른 노즐을 분해하여 도시한 분해사시도이고, 도 6은 본 발명의 다른 실시예에 따른 노즐편을 분해하여 도시한 분해사시도이며, 도 7은 본 발명의 다른 실시예에 따른 노즐의 단면을 도시한 단면도이다.5 is an exploded perspective view showing an exploded nozzle according to another embodiment of the present invention, Figure 6 is an exploded perspective view showing an exploded nozzle piece according to another embodiment of the present invention, Figure 7 is another embodiment of the present invention It is sectional drawing which shows the cross section of the nozzle which concerns on an Example.
여기서, 앞서 도시된 도면에서와 동일한 참조부호는 동일한 기능을 하는 동일한 부재를 가리키므로, 여기서는 중복되는 설명은 생략하기로 한다.Here, the same reference numerals as in the above-described drawings refer to the same member having the same function, and thus redundant description will be omitted here.
도 5 내지 도 7을 참조하면, 본 발명의 다른 실시예에 따른 노즐(220)은, 노즐본체(221)와 제1결합체(123) 및 체결부재(227)를 포함한다.5 to 7, the nozzle 220 according to another embodiment of the present invention includes a nozzle body 221, a first coupling body 123, and a fastening member 227.
노즐본체(221)는, 분리 가능하게 결합되는 복수개의 노즐편(222,224)이 결합위치로 조합되어 이루어진다. 본 실시예에서는, 두 개의 노즐편(222,224)이 결합위치로 조합되어 노즐본체(221)를 이루는 것으로 예시된다.The nozzle body 221 is composed of a plurality of nozzle pieces 222 and 224 which are detachably coupled to each other in a combined position. In this embodiment, the two nozzle pieces 222 and 224 are combined to form the nozzle body 221 to be combined in the engagement position.
각각의 노즐편(222,224)은, 노즐본체(221)의 일부를 이루는 형상을 갖도록 형성된다. 이러한 각각의 노즐편(222,224)은, 노즐본체(221)를 수지주입공(h)의 길이방향에 따라 연장되는 가상선을 중심으로 두 부분으로 절개한 형태로 형성된다.Each nozzle piece 222,224 is formed so that it may have a shape which forms a part of nozzle body 221. As shown in FIG. Each of the nozzle pieces 222 and 224 is formed in a shape in which the nozzle body 221 is cut into two parts around an imaginary line extending along the longitudinal direction of the resin injection hole h.
상기와 같이 형성되는 각각의 노즐편(222,224)에는, 수지주입홈(122a)이 오목하게 형성된다. 이와 같이 각각의 노즐편(222,224)에 각각 형성된 수지주입홈(122a)은, 노즐편(222,224)이 결합위치로 조합될 때 서로 연결되어 수지주입공(h)을 형성하게 된다.In each nozzle piece 222, 224 formed as mentioned above, the resin injection groove 122a is formed in concave shape. In this way, the resin injection grooves 122a respectively formed in the nozzle pieces 222 and 224 are connected to each other when the nozzle pieces 222 and 224 are combined in the engagement position to form the resin injection holes h.
즉 수지주입공(h)은, 복수개의 노즐편(222,224)이 결합위치로 조합될 때, 각 노즐편(222,224)에 각각 형성된 수지주입홈(122a)이 서로 연결되도록 조합되어 노즐본체(221)의 내부에 형성된다.That is, the resin injection hole h is combined so that the resin injection grooves 122a formed in the nozzle pieces 222 and 224 are connected to each other when the nozzle pieces 222 and 224 are combined in the coupling position, and thus the nozzle body 221. It is formed inside of.
상기와 같이 복수개의 노즐편(222,224)의 조합으로 이루어지는 노즐본체(221)의 일측은 매니폴드(110; 도 1 참조)에 연통되고, 노즐본체(221)의 타측은 사출 금형의 캐비티 플레이트(4; 도 1 참조)와 연통되도록 설치된다.As described above, one side of the nozzle body 221 composed of a plurality of nozzle pieces 222 and 224 is in communication with the manifold 110 (see FIG. 1), and the other side of the nozzle body 221 is the cavity plate 4 of the injection mold. It is installed to communicate with;
이에 따라 노즐본체(221) 내부에 형성된 수지주입공(h)은, 그 일측이 매니폴드(110)에 연통되고 그 타측이 캐비티 플레이트와 연통되는 통로를 노즐본체(221)의 내부에 형성하게 된다.Accordingly, the resin injection hole h formed in the nozzle body 221 has a passage in which one side thereof communicates with the manifold 110 and the other side thereof communicates with the cavity plate in the nozzle body 221. .
제1결합체(123)는, 노즐본체(221)의 일측에 결합되어 결합위치로 조합된 각각의 노즐편(222,224)의 일측을 구속한다. 이러한 제1결합체(123)의 구조 및 작용은 전술한 실시예에서와 동일하므로, 이에 대한 상세한 설명은 생략한다.The first coupling body 123 is coupled to one side of the nozzle body 221 and restrains one side of each nozzle piece 222 and 224 combined in a coupling position. Since the structure and function of the first assembly 123 are the same as in the above-described embodiment, a detailed description thereof will be omitted.
체결부재(227)는, 노즐본체(221)의 타측에 체결되어 결합위치로 조합된 노즐편(222)들의 타측을 서로 결합시킨다.The fastening member 227 is fastened to the other side of the nozzle body 221 and couples the other side of the nozzle pieces 222 combined in the coupling position to each other.
노즐본체(221)의 타측에 체결부재(227)가 체결될 수 있도록, 각각의 노즐편(222,224)에는 체결부재(227)가 체결되는 체결공(n)이 형성된다.A fastening hole n to which the fastening member 227 is fastened is formed in each nozzle piece 222, 224 so that the fastening member 227 may be fastened to the other side of the nozzle body 221.
체결공(n)은 각각의 노즐편(222,224)에 각각 관통되게 형성되며, 이와 같이 각각의 노즐편(222)에 관통되게 형성된 각각의 체결공(n)은 노즐편(222,224)들이 결합위치로 조합된 상태일 때 서로 연결되게 형성될 수 있다.The fastening holes n are formed to penetrate through the respective nozzle pieces 222 and 224, and the fastening holes n formed to penetrate the respective nozzle pieces 222 are thus connected to the nozzle pieces 222 and 224. It may be formed to be connected to each other when in a combined state.
체결부재(227)는, 노즐편(222,224)들이 결합위치로 조합된 상태일 때, 서로 연결된 체결공(n)을 관통하여 노즐본체(221)의 타측에 체결될 수 있다.The fastening member 227 may be fastened to the other side of the nozzle body 221 by passing through the fastening holes n connected to each other when the nozzle pieces 222 and 224 are combined to the engaged position.
이때 체결공(n)을 관통하는 체결부재(227)와 노즐본체(221) 간의 결합은, 나사 결합을 통해 이루어질 수 있다.At this time, the coupling between the fastening member 227 penetrating the fastening hole (n) and the nozzle body 221 may be made through a screw coupling.
그리고 이와 같은 체결부재(227)와 노즐편(222,224) 간의 결합은, 노즐본체(221)의 길이방향을 따라 복수개의 부위에서 이루어질 수 있다.The coupling between the fastening member 227 and the nozzle pieces 222 and 224 may be performed at a plurality of portions along the longitudinal direction of the nozzle body 221.
한편 본 실시예에 따르면, 결합위치에서 서로 결합되어 노즐본체(221)를 이루는 두개의 노즐편(222,224) 중, 어느 하나의 노즐편(222)에는 홈부(222b)가 오목하게 형성되고, 다른 하나의 노즐편(224)에는 상기 홈부(222b)와 맞물리는 돌기부(224b)가 돌출되게 형성된다.Meanwhile, according to the present exemplary embodiment, one of the two nozzle pieces 222 and 224 which are coupled to each other at the engagement position to form the nozzle body 221, the groove portion 222b is formed concave in one of the nozzle pieces 222, the other one The nozzle piece 224 of the protrusion 224b engaging with the groove portion 222b is formed to protrude.
상기와 같은 홈부(222b)와 돌기부(224b)는, 노즐편(222,224)의 길이방향을 따라 연장되는 길이를 갖도록 형성된다. 그리고 이와 같이 홈부(222b)와 돌기부(224b)가 각각 형성된 두개의 노즐편(222,224)은, 홈부(222b)와 돌기부(224b)의 맞물림에 의해 결합위치로 조합되는 위치로 안내될 수 있다.The groove 222b and the protrusion 224b as described above are formed to have a length extending along the longitudinal direction of the nozzle pieces 222 and 224. In this way, the two nozzle pieces 222 and 224 each having the groove 222b and the protrusion 224b formed therein may be guided to a position combined with the coupling position by engaging the groove 222b and the protrusion 224b.
즉 홈부(222b)와 돌기부(224b)를 맞물리는 작업만으로 두개의 노즐편(222,224)이 결합위치로 조합될 수 있게 된다.That is, the two nozzle pieces 222 and 224 can be combined to the engaged position only by engaging the groove 222b and the protrusion 224b.
또한 상기 홈부(222b)와 돌기부(224b)는, 수지주입공(h)의 외측에 배치되도록 형성된다. 이와 같이 형성되는 홈부(222b)와 돌기부(224b)에 의해 형성되는 맞물림 구조물은, 수지주입공(h)으로 유입된 수지가 노즐편(222,224) 간의 결합부위를 통해 새어나가는 것을 차단하는 기밀 구조가 수지주입공(h)의 외측에 형성되도록 함으로써, 노즐(220)의 기밀 성능을 향상시킬 수 있다.In addition, the groove 222b and the protrusion 224b are formed to be disposed outside the resin injection hole h. The engagement structure formed by the groove portion 222b and the protrusion portion 224b formed as described above has an airtight structure that prevents resin introduced into the resin injection hole h from leaking through the coupling portion between the nozzle pieces 222 and 224. By being formed outside the resin injection hole h, the airtight performance of the nozzle 220 can be improved.
아울러 노즐편(222,224)은, 홈부(222b)와 돌기부(224b)의 맞물림에 의해 각각의 노즐편(222,224)에 형성된 체결공(n)이 서로 연결되는 위치로 안내될 수 있다.In addition, the nozzle pieces 222 and 224 may be guided to positions where the fastening holes n formed in the nozzle pieces 222 and 224 are connected to each other by engaging the grooves 222 b and the protrusions 224 b.
즉 홈부(222b)와 돌기부(224b)를 맞물리는 작업만으로, 두개의 노즐편(222,224)이 결합위치로 조합되는 것은 물론, 각각의 노즐편(222,224)에 형성된 체결공(n)이 서로 연결되는 위치로 안내될 수 있게 된다.That is, by only engaging the groove 222b and the protrusion 224b, the two nozzle pieces 222 and 224 are combined in a coupling position, and the fastening holes n formed in the respective nozzle pieces 222 and 224 are connected to each other. To be guided to the location.
이에 따라 서로 연결된 체결공(n)을 통해 체결부재(227)가 결합위치로 조합된 두개의 노즐편(222,224)을 관통하여 결합될 수 있게 된다. 그리고 이와 같은 체결부재(227)와 노즐편(222,224)들과의 결합에 의해, 노즐편(222,224)이 서로 밀착되는 방향으로 결합되어 노즐본체(221)를 이루게 된다.Accordingly, the fastening member 227 may be coupled to each other through the two nozzle pieces 222 and 224 combined at the coupling position through the fastening holes n connected to each other. In addition, by coupling the fastening member 227 and the nozzle pieces 222 and 224, the nozzle pieces 222 and 224 are coupled in a close contact with each other to form the nozzle body 221.
이때 서로 결합되는 두개의 노즐편(222,224)이 체결부재(227)에 의해 서로 밀착되는 방향으로 가압되면서 결합되므로, 노즐편(222,224) 간의 결합부위가 완전히 밀착될 수 있어 노즐(220)의 기밀 성능을 더욱 향상시킬 수 있다.At this time, since the two nozzle pieces 222 and 224 coupled to each other are pressed while being pressed in the direction in which the fastening member 227 is in close contact with each other, the coupling portion between the nozzle pieces 222 and 224 may be completely in close contact with each other, thereby ensuring the airtight performance of the nozzle 220. Can be further improved.
즉 본 실시예의 노즐(220)은, 홈부(222b)와 돌기부(224b)의 맞물림에 의해 형성되는 기밀 구조와 노즐편(222,224)과 체결부재(227)의 체결에 의해 이루어지는 결합 구조를 통해, 수지주입공(h)으로 유입된 수지가 노즐편(222,224) 간의 결합부위를 통해 새어나가는 것을 효과적으로 차단할 수 있도록 향상된 기밀 성능을 제공할 수 있다.That is, the nozzle 220 of the present embodiment has a resin structure through an airtight structure formed by the engagement of the groove 222b and the protrusion 224b, and a coupling structure formed by the fastening of the nozzle pieces 222,224 and the fastening member 227. Resin introduced into the injection hole (h) can provide an improved airtight performance to effectively block the leakage through the coupling portion between the nozzle pieces (222,224).
한편 본 실시예의 노즐(220)은, 노즐(220)의 온도를 측정하는 온도측정부(229)를 더 포함할 수 있다. 본 실시예에서 온도측정부(229)는 노즐본체부(221)에 접촉되어 노즐(220)의 온도를 측정하는 열전대를 포함하는 형태로 구비되는 것으로 예시된다.The nozzle 220 of the present embodiment may further include a temperature measuring unit 229 for measuring the temperature of the nozzle 220. In the present embodiment, the temperature measuring unit 229 is illustrated as being provided in a form including a thermocouple contacting the nozzle body 221 and measuring the temperature of the nozzle 220.
이러한 온도측정부(229)에 의해 측정되는 노즐(220)의 온도는, 노즐(220)을 통해 유입되는 수지가 굳거나 타지 않는 적정 온도로 노즐(220)의 온도를 유지할 수 잇도록 가열코일(140)의 동작을 조절하기 위한 정보로 이용될 수 있다.The temperature of the nozzle 220 measured by the temperature measuring unit 229 is a heating coil (so as to maintain the temperature of the nozzle 220 at an appropriate temperature at which the resin flowing through the nozzle 220 does not harden or burn). 140 may be used as information for adjusting the operation.
그리고 노즐편(222.224) 중 어느 하나의 노즐편(224)에는, 온도측정부(229)가 삽입되는 삽입홈(224c)이 오목하게 형성된다.In the nozzle piece 224 of any one of the nozzle pieces 222.224, an insertion groove 224c into which the temperature measuring part 229 is inserted is formed to be concave.
온도측정부(229)는, 상기와 같이 형성된 삽입홈(224c)을 통해 노즐편(224)과의 결합 위치가 안내되는 한편, 노즐편(224)의 외측면에 안정되게 삽입되어 고정될 수 있다.The temperature measuring unit 229 may be guided to the nozzle piece 224 through the insertion groove 224c formed as described above, and may be stably inserted and fixed to the outer surface of the nozzle piece 224. .
본 발명은 도면에 도시된 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.
<부호의 설명><Description of the code>
100 : 사출성형용 핫러너 장치100: Hot runner device for injection molding
110 : 매니폴드110: manifold
111 : 수지이동통로111: resin transfer passage
120,220 : 노즐120,220: Nozzle
121,221 : 노즐본체121,221: nozzle body
121a : 끼움결합부121a: fitting portion
121b : 나사결합부 121b: screw connection part
122,222,224 : 노즐편122,222,224: Nozzle piece
122a : 수지주입홈122a: Resin Injection Groove
123 : 제1결합체123: first binder
125 : 제2결합체125: second binder
125a : 커버부125a: cover part
125b : 커버결합부125b: cover coupling part
130 : 개폐부130: opening and closing part
131 : 피스톤131: piston
133 : 실린더133: cylinder
140 : 가열코일140: heating coil
145 : 코일커버145: coil cover
222b : 홈부222b: groove
224b : 돌기부224b: protrusion
224c : 삽입홈224c: Insertion groove
227 : 체결부재227: fastening member
229 : 온도측정부229: temperature measuring unit

Claims (14)

  1. 내부에 수지가 이동되는 수지이동통로가 형성되는 매니폴드;A manifold in which a resin movement passage through which resin is moved is formed;
    내부에 수지주입공이 형성되고, 상기 수지주입공이 상기 수지이동통로와 연통되도록 상기 매니폴드에 설치되며, 상기 매니폴드로부터 유입되는 수지를 사출 금형에 주입하는 노즐; 및A resin injection hole is formed therein, and the resin injection hole is installed in the manifold such that the resin injection hole communicates with the resin movement passage, and a nozzle for injecting resin flowing from the manifold into an injection mold; And
    상기 노즐을 개폐하는 개폐부를 포함하고, 상기 노즐은,An opening and closing part for opening and closing the nozzle, wherein the nozzle,
    분리 가능하게 결합되는 복수개의 노즐편이 결합위치로 조합되어 이루어지며, 일측이 상기 매니폴드에 연통되고 타측이 상기 사출 금형에 연통되도록 설치되는 노즐본체; 및A nozzle body detachably coupled to a plurality of nozzle pieces, the nozzle body being installed so that one side communicates with the manifold and the other side communicates with the injection mold; And
    상기 노즐본체의 일측에 결합되어 상기 결합위치로 조합된 각각의 상기 노즐편의 일측을 구속하는 제1결합체를 포함하는 것을 특징으로 하는 사출성형용 핫러너 장치.And a first coupling body coupled to one side of the nozzle body and restraining one side of each nozzle piece combined to the coupling position.
  2. 제1항에 있어서,The method of claim 1,
    상기 노즐편에는, 수지주입홈이 오목하게 형성되고;A resin injection groove is formed in the nozzle piece to be concave;
    상기 수지주입공은, 복수개의 상기 노즐편이 상기 결합위치로 조합될 때 상기 복수개의 수지주입홈이 조합되어 상기 노즐본체의 내부에 형성되는 것을 특징으로 하는 사출성형용 핫러너 장치.The resin injection hole is injection molding hot runner device characterized in that the plurality of resin injection grooves are formed in the interior of the nozzle body when the plurality of nozzle pieces are combined to the engaging position.
  3. 제1항에 있어서,The method of claim 1,
    상기 제1결합체는, 상기 노즐본체의 외주면을 감싸도록 상기 노즐본체의 일측에 억지 끼움되어 상기 결합위치로 조합된 각각의 상기 노즐편의 일측을 서로 밀착되는 방향으로 가압하는 것을 특징으로 하는 사출성형용 핫러너 장치.The first assembly is inserted into one side of the nozzle body so as to surround the outer peripheral surface of the nozzle body for injection molding, characterized in that for pressing the one side of each nozzle piece combined in the engagement position in close contact with each other Hot runner device.
  4. 제3항에 있어서,The method of claim 3,
    상기 노즐본체의 일측 외주면에는, 상기 제1결합체가 슬라이딩되며 억지 끼움되는 끼움결합부가 형성되고;On one side outer circumferential surface of the nozzle body, the first coupling is provided with a fitting coupling portion for sliding and interference fitting;
    상기 끼움결합부는, 상기 제1결합체가 슬라이딩되며 억지 끼움되는 방향을 따라 둘레 길이가 점차 확장되도록 테이퍼지게 형성되는 것을 특징으로 하는 사출성형용 핫러너 장치.The fitting coupling portion, the injection molding hot runner device, characterized in that the first coupling is formed to be tapered so that the circumferential length gradually expands in the sliding direction.
  5. 제1항에 있어서,The method of claim 1,
    상기 노즐은, 상기 노즐본체의 타측에 결합되어 상기 결합위치로 조합된 각각의 상기 노즐편의 타측을 구속하는 제2결합체를 더 포함하는 것을 특징으로 하는 사출성형용 핫러너 장치.The nozzle further comprises a second coupling body coupled to the other side of the nozzle body and restraining the other side of each of the nozzle pieces combined to the engagement position, injection molding hot runner device.
  6. 제5항에 있어서,The method of claim 5,
    상기 제2결합체는, 상기 노즐본체를 감싸며 상기 노즐본체의 타측과 결합되어 상기 결합위치로 조합된 각각의 노즐편의 타측을 고정시키는 것을 특징으로 하는 사출성형용 핫러너 장치.The second assembly, the injection molding hot runner device surrounding the nozzle body is coupled to the other side of the nozzle body to fix the other side of each nozzle piece combined to the engagement position.
  7. 제6항에 있어서,The method of claim 6,
    상기 노즐본체의 타측 외주면에는, 나사결합부가 형성되고,On the other outer peripheral surface of the nozzle body, a screw engaging portion is formed,
    상기 제2결합체는, 상기 결합위치로 조합된 각각의 상기 노즐편을 감싸며 수용하는 커버부와, 상기 커버부의 내주면에 형성되어 상기 나사결합부와 결합되는 커버결합부를 포함하는 것을 특징으로 하는 사출성형용 핫러너 장치.The second assembly includes an injection molding comprising a cover portion which surrounds and accommodates each of the nozzle pieces combined at the coupling position, and a cover coupling portion formed on an inner circumferential surface of the cover portion and engaged with the screw coupling portion. Hot runner device.
  8. 제1항에 있어서,The method of claim 1,
    상기 노즐에 설치되어 상기 노즐을 가열하는 가열코일을 더 포함하는 것을 특징으로 하는 사출성형용 핫러너 장치.And a heating coil installed in the nozzle to heat the nozzle.
  9. 제1항에 있어서,The method of claim 1,
    상기 노즐은, 상기 노츨본체의 타측에 체결되어 상기 결합위치로 조합된 복수개의 상기 노즐편을 결합시키는 체결부재를 더 포함하고;The nozzle further comprises a fastening member coupled to the other side of the notch body to engage the plurality of nozzle pieces combined at the engagement position;
    각각의 상기 노즐편에는, 상기 체결부재가 체결되는 체결공이 관통되게 형성되는 것을 특징으로 하는 사출성형용 핫러너 장치.Each of the nozzle pieces, the injection molding hot runner device characterized in that the fastening hole through which the fastening member is fastened.
  10. 제9항에 있어서,The method of claim 9,
    상기 노즐본체는, 분리 가능하게 결합되는 두개의 노즐편이 상기 결합위치로 조합되어 이루어지고;The nozzle body is formed by combining two nozzle pieces detachably coupled to the engagement position;
    두개의 상기 노즐편 중 어느 하나의 상기 노즐편에는, 홈부가 상기 노즐편의 길이방향을 따라 연장되는 길이를 갖도록 오목하게 형성되고;The nozzle piece of any one of the two nozzle pieces is formed so as to have a groove portion having a length extending in the longitudinal direction of the nozzle piece;
    두개의 상기 노즐편 중 다른 하나의 상기 노즐편에는, 상기 홈부와 맞물리는 돌기부가 상기 노즐편의 길이방향을 따라 연장되는 길이를 갖도록 돌출되게 형성되는 것을 특징으로 하는 사출성형용 핫러너 장치.Injection nozzle hot runner device, characterized in that formed in the other one of the two nozzle pieces, the projection to be engaged with the groove portion has a length extending in the longitudinal direction of the nozzle piece.
  11. 제10항에 있어서,The method of claim 10,
    상기 홈부와 상기 돌기부는, 상기 수지주입공의 외측에 배치되도록 형성되는 것을 특징으로 하는 사출성형용 핫러너 장치.The groove portion and the projection portion, the injection molding hot runner device, characterized in that formed to be disposed outside the resin injection hole.
  12. 제10항에 있어서,The method of claim 10,
    두개의 상기 노즐편은, 상기 홈부와 상기 돌기부의 맞물림에 의해 상기 결합위치로 조합되는 위치로 안내되는 것을 특징으로 하는 사출성형용 핫러너 장치.Two of the nozzle pieces are guided to the position combined with the engaging position by the engagement of the groove portion and the projection portion hot injection apparatus for injection molding.
  13. 제10항에 있어서,The method of claim 10,
    두개의 상기 노즐편은, 상기 홈부와 상기 돌기부의 맞물림에 의해 각각의 상기 노즐편에 형성된 상기 체결공이 서로 연결되는 위치로 안내되는 것을 특징으로 하는 사출성형용 핫러너 장치.The two nozzle pieces are guided to the position where the fastening holes formed in the nozzle pieces are connected to each other by the engagement of the groove portion and the projection portion, the hot runner device for injection molding.
  14. 제1항에 있어서,The method of claim 1,
    상기 노즐의 온도를 측정하는 온도측정부를 더 포함하고;Further comprising a temperature measuring unit for measuring the temperature of the nozzle;
    상기 노즐편 중 어느 하나에는, 상기 온도측정부가 삽입되는 삽입홈이 오목하게 형성되는 것을 특징으로 하는 사출성형용 핫러너 장치.Any one of the nozzle pieces, the injection molding hot runner device, characterized in that the insertion groove for inserting the temperature measuring portion is formed concave.
PCT/KR2016/001178 2015-05-11 2016-02-03 Hot runner apparatus for injection molding WO2016182169A1 (en)

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CN115179509A (en) * 2022-07-06 2022-10-14 盐城川流汽车配件有限公司 Hot runner injection molding system and process for interior trim part of automobile instrument panel

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JPH0724891A (en) * 1993-07-13 1995-01-27 Taiho Kogyo Kk Hot rubber for injection molding plastic
KR20030019437A (en) * 2000-06-16 2003-03-06 몰드-마스터스 리미티드 Thermally balanced hot runner nozzle
JP2003513817A (en) * 1999-11-08 2003-04-15 ディー−エム−イー・カンパニー Flow nozzle for injection molding
KR20050002769A (en) * 2004-12-15 2005-01-10 허남욱 Hot runner valve nozzle for molding plastics assembling and disassembling lower part
JP2010082950A (en) * 2008-09-30 2010-04-15 Murata Mfg Co Ltd Preplasticating injection molding machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0724891A (en) * 1993-07-13 1995-01-27 Taiho Kogyo Kk Hot rubber for injection molding plastic
JP2003513817A (en) * 1999-11-08 2003-04-15 ディー−エム−イー・カンパニー Flow nozzle for injection molding
KR20030019437A (en) * 2000-06-16 2003-03-06 몰드-마스터스 리미티드 Thermally balanced hot runner nozzle
KR20050002769A (en) * 2004-12-15 2005-01-10 허남욱 Hot runner valve nozzle for molding plastics assembling and disassembling lower part
JP2010082950A (en) * 2008-09-30 2010-04-15 Murata Mfg Co Ltd Preplasticating injection molding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115179509A (en) * 2022-07-06 2022-10-14 盐城川流汽车配件有限公司 Hot runner injection molding system and process for interior trim part of automobile instrument panel

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