WO2024122834A1 - Dispositif de moulage - Google Patents

Dispositif de moulage Download PDF

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Publication number
WO2024122834A1
WO2024122834A1 PCT/KR2023/014909 KR2023014909W WO2024122834A1 WO 2024122834 A1 WO2024122834 A1 WO 2024122834A1 KR 2023014909 W KR2023014909 W KR 2023014909W WO 2024122834 A1 WO2024122834 A1 WO 2024122834A1
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WO
WIPO (PCT)
Prior art keywords
impeller
molded
fixed core
pin
shaft hole
Prior art date
Application number
PCT/KR2023/014909
Other languages
English (en)
Korean (ko)
Inventor
함승규
김윤상
양승환
임현진
최진범
Original Assignee
삼성전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Publication of WO2024122834A1 publication Critical patent/WO2024122834A1/fr

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Classifications

    • 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
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/30—Mounting, exchanging or centering
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/30—Mounting, exchanging or centering
    • B29C33/301—Modular mould systems [MMS], i.e. moulds built up by stacking mould elements, e.g. plates, blocks, rods
    • B29C33/302—Assembling a large number of mould elements to constitute one cavity
    • 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
    • B29C45/36—Moulds having means for locating or centering cores
    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • B29C45/401—Ejector pin constructions or mountings
    • 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
    • B29C45/36—Moulds having means for locating or centering cores
    • B29C2045/363—Moulds having means for locating or centering cores using a movable core or core part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/748—Machines or parts thereof not otherwise provided for
    • B29L2031/7498—Rotors

Definitions

  • the present disclosure relates to a mold device, and more specifically, to a mold device for molding an impeller.
  • a mold device for molding an injection product is a device that forms a molding space, that is, a cavity, through which molten resin injected into a manifold is delivered through one or more nozzles coupled to the lower part of the manifold.
  • the mold device forms a cavity, which is a molding space, by combining the upper and lower molds.
  • the upper and lower molds forming the cavity are separated from each other, and the molded injection product can be separated from the mold through a sliding device or the like.
  • a mold device that can reduce damage to perpendicularity when a molded impeller is taken out.
  • a mold device is a mold device for molding an impeller for a vacuum cleaner including a shaft hole into which a rotating shaft is inserted.
  • the mold device includes a first mold including a first molded core having a shape corresponding to a portion of the outer surface of the impeller.
  • the mold device is a second mold provided to face the first mold, a second molded core including a shape corresponding to another part of the outer surface of the impeller, and a shape corresponding to a part of the inner surface of the impeller. It includes a second mold including a third molded core and a fourth molded core provided at the center of the third molded core and having a shape corresponding to another part of the inner surface of the impeller.
  • the fourth molded core includes a hollow fixed core pin including a shaft hole molding portion having a shape corresponding to the shaft hole to form the shaft hole.
  • the fourth molded core is provided to be movable within the fixed core pin and includes a push pin provided to separate the molded impeller from the fixed core pin.
  • the fixed core pin may include a fixed core pin body portion having a larger cross-sectional area than the shaft hole forming portion.
  • the shaft hole molding portion and the fixed core pin body portion may be provided to support the molded impeller.
  • the push pin may move to protrude from the shaft hole forming part within the fixed core pin to separate the impeller.
  • the fixed core pin is provided to be inserted into the third molded core and may be fixed to the third molded core.
  • the fixed core pin body portion of the fixed core pin may be provided to be in close contact with the third molded core.
  • the push pin may include a pushing portion provided to contact the molded impeller.
  • the push pin may include a push pin body portion having a larger cross-sectional area than the pushing portion.
  • the shaft hole forming part may include a first hollow part into which a part of the pushing part is inserted so that the part of the pushing part moves within the fixed core pin.
  • the cross-sectional area of the first hollow portion may be prepared to correspond to the cross-sectional area of the pushing portion.
  • the fixed core pin body portion may include a second hollow portion into which a portion of the push pin body portion is inserted so that the portion of the push pin body portion moves within the fixed core pin.
  • the fixed core pin may include a guide surface formed to be inclined from the second hollow portion toward the first hollow portion to guide the pushing portion being inserted into the first hollow portion from the second hollow portion.
  • the length of the fixed core pin may be shorter than the length of the push pin.
  • the length of the shaft hole forming part may be shorter than the length of the fixed core pin body part.
  • the shaft hole into which the rotation shaft of the impeller is inserted and the pushing portion of the push pin may be arranged to be concentric.
  • a mold device is a mold device for molding an impeller for a vacuum cleaner including a shaft hole into which a rotating shaft is inserted.
  • the mold device includes a first molded core assembly having a shape corresponding to a portion of the outer surface of the impeller.
  • the mold device is. and a second molded core assembly including a shape corresponding to a portion of the inner surface of the impeller.
  • the second molded core assembly includes a hollow fixed core pin provided to support the molded impeller.
  • the second molded core assembly includes a push pin that is movable within the fixed core pin and is provided to separate the molded impeller from the fixed core pin.
  • the fixed core pin may include a shaft hole molding portion including a shape corresponding to an shaft hole into which the rotation shaft is inserted among the molded inner surfaces of the impeller.
  • the fixed core pin may include a fixed core pin body portion having a larger cross-sectional area than the shaft hole forming portion.
  • the push pin may move to protrude from the shaft hole forming part within the fixed core pin to separate the impeller.
  • the push pin may include a pushing portion provided to contact the molded impeller.
  • the push pin may include a push pin body portion having a larger cross-sectional area than the pushing portion.
  • the shaft hole forming part may include a first hollow part including a cross-sectional area corresponding to the cross-sectional area of the pushing part.
  • the pushing portion may be provided to be inserted into the first hollow portion and may be provided to move within the fixed core pin.
  • the fixed core pin body portion may include a second hollow portion into which a portion of the push pin body portion is inserted so that the portion of the push pin body portion moves within the fixed core pin.
  • the fixed core pin may include a guide surface formed to be inclined from the second hollow portion toward the first hollow portion to guide the pushing portion being inserted into the first hollow portion from the second hollow portion.
  • the shaft hole into which the rotation shaft of the impeller is inserted and the pushing portion of the push pin may be arranged to be concentric.
  • the length of the fixed core pin may be shorter than the length of the push pin.
  • the fixed core pin forming the shaft hole of the impeller is fixed in close contact with the second mold and there is no clearance, damage to perpendicularity due to clearance during the process of separating the impeller can be reduced.
  • the fixed core pin forms the shaft hole of the impeller and the push pin in the fixed core pin separates the impeller, damage to the perpendicularity of the impeller shaft hole can be reduced.
  • Figure 2 is a view showing the impeller of Figure 1 from another angle so that the shaft hole of the impeller is shown.
  • Figure 3 is a diagram illustrating a part of a mold device according to an embodiment.
  • Figure 4 is a diagram showing some components of a mold device for forming an impeller combined according to an embodiment.
  • Figure 5 is an exploded view showing the combined components of the mold device of Figure 4.
  • FIG. 6 is a view showing the exploded view of FIG. 5 from another angle.
  • Figure 7 is a cross-sectional view of some components of a mold device for molding an impeller in the process of molding an impeller according to an embodiment.
  • Figure 8 is a cross-sectional view showing an impeller being formed by injecting resin into the cavity shown in Figure 7.
  • FIG. 9 is an enlarged view showing a state in which the first molded core and the second molded core have been removed in area A shown in FIG. 8.
  • FIG. 10 is a view showing the molded impeller being separated from the fixed core pin by a push pin in the figure shown in FIG. 9.
  • Figure 11 is a diagram showing a fourth molded core according to one embodiment.
  • Figure 12 is a cross-sectional view showing a cross-section of a fourth molded core according to an embodiment.
  • FIG. 13 is an enlarged view of area B of FIG. 12.
  • FIG. 14 is a diagram showing the push pin shown in FIG. 13 being guided by a guide surface and moving from the second hollow part to the first hollow part.
  • FIG. 15 is a view showing the push pin shown in FIG. 14 protruding and moving outside of the fixed core pin.
  • first”, “second”, etc. used in this specification may be used to describe various components, but the components are not limited by the terms, and the terms It is used only for the purpose of distinguishing one component from another.
  • a first component may be named a second component without departing from the scope of the present invention, and similarly, the second component may also be named a first component.
  • the term “and/or” includes any of a plurality of related stated items or a combination of a plurality of related stated items.
  • clockwise may be expressed as the first direction
  • counterclockwise which is the opposite direction to the first direction
  • second direction may be expressed as the second direction
  • FIG. 1 is a perspective view showing an impeller according to one embodiment.
  • Figure 2 is a view showing the impeller of Figure 1 from another angle so that the shaft hole of the impeller is shown.
  • the impeller (P) may be a component installed in a device or product that is provided to rotate and generate a flow of air.
  • the impeller (P) can be molded through an injection molding device that includes the mold device (1).
  • the impeller (P) In order for the impeller (P) to rotate, the rotational force from a motor (not shown) must reach the impeller (P), so the impeller (P) is equipped with a rotating shaft that can receive the rotational force from a motor (not shown). It can be provided.
  • the rotation shaft may be connected to a motor (not shown) and rotate according to the rotation of the motor (not shown).
  • the impeller (P) may include a shaft hole (h) into which a rotating shaft, etc. is inserted.
  • a rotating shaft is mounted on the impeller (P) in the shaft hole (h), and accordingly, rotational force such as a motor (not shown) is transmitted to the impeller (P) through the rotating shaft, allowing the impeller (P) to rotate.
  • the shaft hole (h) of the impeller (P) may be provided at the bottom of the impeller (P).
  • the shaft hole (h) of the impeller (P) may be provided at the bottom of the impeller (P) to be concentric with the impeller (P).
  • the longitudinal direction of the shaft hole (h) of the impeller (P) and the longitudinal direction of the rotation shaft may be arranged to be parallel. Therefore, when the impeller (P) rotates, the radial direction of the rotating impeller (P) and the axial direction of the rotation axis may be arranged to form a right angle.
  • Figure 3 is a diagram illustrating a part of a mold device according to an embodiment.
  • the mold device 1 may be mounted on an injection molding device (not shown) to inject an injection molded product.
  • an injection molding device not shown
  • descriptions of the injection molding device (not shown) and the specific process of injecting the injection product will be omitted.
  • the mold device 1 may be a mold device 1 for molding an impeller (P).
  • the impeller (P) may be an impeller (P) for a vacuum cleaner including a shaft hole (h) into which the rotating shaft is inserted.
  • the mold device 1 may include a first mold 20 .
  • the mold device 1 may include a second mold 10 that is detachably coupled to the first mold 20 and forms a cavity CA of a shape corresponding to the injection molded product to be manufactured together with the first mold 20. You can.
  • the first mold 20 and the second mold 10 may be arranged to face each other.
  • the first mold 20 may be provided in a fixed state.
  • the second mold 10 may be arranged to move in the first direction (X) so as to be separably coupled to the first mold 20 .
  • the first direction (X) is a direction corresponding to the left and right directions, but is not limited to this and the first direction (X) may be set to the front-to-back direction or the up-down direction.
  • the present invention is not limited to this, and the second mold 10 may be maintained in a fixed state and the first mold 20 may be moved.
  • the first mold 20 may include a first molded core 210 having a shape corresponding to a portion 210a of the outer surface of the impeller P. Accordingly, the first molded core 210 may form a part of the cavity CA.
  • the first mold 20 may be described as a first molded core assembly 20, and the first molded core assembly 20 may include a first molded core 210.
  • the first molded core 210 can accommodate molten resin therein.
  • the first molded core 210 may be provided to inject molten resin into the cavity CA formed through the first mold 20 and the second mold 10. The process of injecting molten resin into the cavity (CA) will be described later.
  • the first mold 20 may include a first template 234 provided to accommodate the first molding core 210. More specifically, the first molding core 210 may be inserted into the first template 234 and fixed to the first mold 20.
  • the first mold 20 may include a second template 233 and a third template 232.
  • the second template 233 may be provided in a form that supports the first template 234.
  • the second template 233 may be prepared to be coupled to the first template 234.
  • the third template 232 may be coupled to the second template 233 and may support the first template 234 together with the second template 233.
  • the second mold 10 may include a second molding core 220.
  • the second molded core 220 may have a shape corresponding to another portion 220a of the outer surface of the impeller P. Accordingly, the second molded core 220 may form part of the cavity (CA) for molding the impeller (P).
  • a plurality of second molded cores 220 may be provided. When a plurality of second molded cores 220 are provided, the plurality of second molded cores 220 may be arranged to be combined with each other to form a shape corresponding to another portion 220a of the outer surface of the impeller (P). .
  • the second mold 10 may include a third molded core 110.
  • the third molded core 110 may include a shape corresponding to a portion 110a of the inner surface of the impeller P.
  • the third molded core 110 may be arranged concentrically with the first molded core 210.
  • the third molded core 110 may be provided to support the molded impeller (P) before taking out.
  • the second mold 10 may include a fourth molded core 140.
  • the fourth molded core 140 may be provided at the center of the third molded core 110.
  • the fourth molded core 140 may have a shape corresponding to another portion 141a of the inner surface of the impeller P.
  • the fourth molded core 140 may include a push pin 142. A detailed description of the fourth molded core 140 will be described later.
  • the second mold 10 may include a first disk 241.
  • the second mold 10 may include a second disk 242.
  • the first disk 241 may be formed to accommodate the second disk 242.
  • the second disk 242 may be provided to accommodate the third molded core 110. Accordingly, the third molded core 110 can be accommodated in the first disk 241. The first disk 241 and the second disk 242 may support the third molded core 110.
  • the second mold 10 may include a fifth template 131.
  • the first disk 241 and the second disk 242 can be accommodated in the fifth template 131.
  • the second mold 10 may include a sixth template 132.
  • the sixth template 132 may support the fifth template 131.
  • the second mold 10 may include sliding cores 121 and 122.
  • the sliding cores 121 and 122 may include a first sliding core 121.
  • the first sliding core 121 may accommodate a portion of the push pin 142.
  • the sliding cores 121 and 122 may include a second sliding core 122.
  • the second sliding core 122 may support the first sliding core 121.
  • the second sliding core 122 can push the first sliding core 121.
  • the second sliding core 122 is connected to a take-out device (not shown) and can move in the first direction (X) by the movement of the take-out device (not shown).
  • the second sliding core 122 When the first sliding core 121 moves in the first direction (X), the second sliding core 122 may be pushed. Through this, when the second sliding core 122 moves in the first direction (X), the push pin 142 accommodated in the second sliding core 122 can move in the first direction (X). Since the push pin 142 can move in the first direction (X), the molded impeller (P) can be pushed by the push pin 142 and taken out from the second mold 10. The specific process in which the molded impeller (P) is taken out from the second mold 10 by the push pin 142 will be described later.
  • the spring 123 When the second sliding core 122 moves in the first direction (X), the spring 123 may be compressed. Thereafter, the second sliding core 122 may receive a force in a direction opposite to the first direction (X) and move in a direction opposite to the first direction (X) due to the elastic force of the spring 123. When the second sliding core 122 moves in a direction opposite to the first direction (X), the push pin 142 accommodated in the second sliding core 122 may move in a direction opposite to the first direction (X). there is.
  • the first sliding core 121 may move in a direction opposite to the first direction (X) and return.
  • Figure 4 is a diagram showing some components of a mold device for molding an impeller according to an embodiment combined.
  • Figure 5 is an exploded view showing the combined components of the mold device of Figure 4.
  • FIG. 6 is a view showing the exploded view of FIG. 5 from another angle.
  • the cavity (CA) for forming the impeller (P) includes the first molded core 210, the second molded core 220, the third molded core 110, and the fourth molded core ( 140).
  • the following description will be made by showing the first molded core 210 disposed at the upper side and the fourth molded core 140 disposed at the lower side.
  • the first molded core 210 may be disposed on the upper side to form a cavity (CA) on the outer surface of the impeller (P).
  • the second molded core 220 may be disposed below the first molded core 210.
  • the first molded core 210 and the second molded core 220 may be arranged to form a cavity (CA) shape corresponding to the outer surface of the impeller (P).
  • the third molded core 110 may be disposed below the second molded core 220 to form a cavity (CA) shape corresponding to a portion (110a) of the inner surface of the impeller (P).
  • the fourth molded core 140 may include a fixed core pin 141.
  • the fixed core pin 141 may include hollows 1411a and 1412a (see FIG. 13).
  • the fourth molded core 140 including the fixed core pin 141 and the push pin 142 may be described as the second molded core assembly 110, 140, and 220.
  • the second molded core assemblies 110, 140, and 220 may include a second molded core 220 and a third molded core 110.
  • the fixed core pin 141 may include a shaft hole (h) forming portion.
  • the fixed core pin 141 may include a fixed core pin body portion 1412.
  • the fourth molded core 140 may be provided to be inserted into the third molded core 110. More specifically, the fixed core pin 141 may be provided to be inserted into the third molded core 110.
  • the shaft hole forming part 1411 may include a shape corresponding to the shaft hole (h) to form the shaft hole (h) of the impeller (P). Therefore, immediately after the impeller (P) is molded, the axial hole molding part 1411 may be inserted into a portion corresponding to the axial hole (h) of the impeller (P).
  • the fixed core pin body portion 1412 may be provided to extend from the shaft hole forming portion 1411.
  • the fixed core pin body portion 1412 may include a larger cross-sectional area than the shaft hole forming portion 1411.
  • the fourth molded core 140 may include a push pin 142.
  • the push pin 142 may be provided to be inserted into the fixed core pin 141.
  • the push pin 142 may be provided to be movable within the fixed core pin 141.
  • the push pin 142 may include a pushing portion 1421 provided to directly contact the molded impeller (P).
  • the push pin 142 may include a push pin body portion 1422 having a larger cross-sectional area than the pushing portion 1421.
  • the push pin body portion 1422 may be provided to extend from the pushing portion 1421.
  • the push pin 142 may be provided to separate the molded impeller (P) from the fixed core pin 141. More specifically, the push pin 142 moves to protrude from the shaft hole molding portion 1411 within the fixed core pin 141 and pushes the molded impeller (P), thereby pushing the molded impeller (P) from the fixed core pin 141. (P) can be separated. A more detailed process of separating the impeller (P) on which the push pin 142 is formed will be described later.
  • Figure 7 is a cross-sectional view of some components of a mold device for molding an impeller in the process of molding an impeller according to an embodiment.
  • Figure 8 is a cross-sectional view showing an impeller being formed by injecting resin into the cavity shown in Figure 7.
  • FIG. 9 is an enlarged view showing a state in which the first molded core and the second molded core have been removed in area A shown in FIG. 8.
  • FIG. 10 is a view showing the molded impeller being separated from the fixed core pin by a push pin in the figure shown in FIG. 9.
  • molten resin may be accommodated in the first molded core 210. Molten resin can move inside the cavity (CA).
  • the resin that has moved inside the cavity (CA) hardens according to the shape of the cavity (CA), allowing the impeller (P) to be formed.
  • the molded impeller (P) can be taken out from the mold.
  • the first mold 20 and the second mold 10 can be separated.
  • the molded impeller (P) and the first molded core 210 may be separated.
  • the second molded core 220 may be separated from the impeller (P) on which the molding has been completed.
  • the impeller (P) immediately after molding may be supported by the third molded core 110 and the fourth molded core 140.
  • the shaft hole forming portion 1411 and the fixed core pin body portion 1412 may be in a state supporting the impeller (P).
  • the push pin 142 can move within the fixed core pin 141.
  • the push pin 142 can protrude from the inside of the fixed core pin 141 to the outside to push the impeller (P).
  • the shaft hole (h) of the impeller (P) may be formed through the shaft hole molding portion 1411 of the fixed core pin 141. Accordingly, the shaft hole (h) of the impeller (P) may be in contact with the shaft hole forming portion 1411 of the fixed core pin 141.
  • the fixed core pin body portion 1412 of the fixed core pin 141 may be in close contact with the third molded core 110 so that there is no clearance. Therefore, while the push pin 142 pushes the impeller P, the fixed core pin 141 may not shake due to clearance or the like. Therefore, the shaft hole forming portion 1411 included in the fixed core pin 141 can be separated from the impeller (P) without damaging the perpendicularity of the impeller (P).
  • the push pin 142 protrudes outward from the inside of the fixed core pin 141 and pushes the impeller (P)
  • the movement or movement of the push pin 142 causes the area in contact with the impeller (P) and the shaft hole forming part 1411. It may not have any effect. Accordingly, the perpendicularity of the shaft hole (h) of the impeller (P) may not be damaged by the process in which the push pin (142) protrudes from the inside of the fixed core pin (141) to the outside and pushes the impeller (P).
  • Figure 11 is a diagram showing a fourth molded core according to one embodiment.
  • Figure 12 is a cross-sectional view showing a cross-section of a fourth molded core according to an embodiment.
  • the length (a+b) of the fixed core pin 141 may be shorter than the length (c+d) of the push pin 142. Accordingly, even when the push pin 142 moves within the fixed core pin 141 by the sliding core, it may be provided to protrude to the outside of the fixed core pin 141.
  • the length (a) of the shaft hole forming portion 1411 may be formed shorter than the length (b) of the fixed core pin body portion 1412.
  • the length (c) of the pushing part 1421 of the push pin 142 may be longer than the length (a) of the shaft hole forming part 1411 of the fixed core pin 141. Accordingly, the pushing portion 1421 of the push pin 142 may be provided to penetrate the fixed core pin 141 and protrude out of the shaft hole forming portion 1411.
  • the shaft hole (h) into which the rotation axis of the impeller (P) is inserted and the pushing portion (1421) of the push pin (142) may be arranged to be concentric. Therefore, when the pushing part 1421 of the push pin 142 pushes the shaft hole (h) of the impeller (P), it contacts and pushes the center of the shaft hole (h) of the impeller (P), so that the shaft hole (h) of the impeller (P) is pushed. Damage to perpendicularity can be minimized.
  • FIG. 13 is an enlarged view of area B of FIG. 12.
  • FIG. 14 is a diagram showing the push pin shown in FIG. 13 being guided by the guide surface 1413 and moving from the second hollow part to the first hollow part.
  • FIG. 15 is a view showing the push pin shown in FIG. 14 protruding and moving outside of the fixed core pin.
  • the shaft hole forming portion 1411 of the fixed core pin 141 has a pushing portion (1421) so that a portion of the pushing portion 1421 of the push pin 142 moves within the fixed core pin 141.
  • a portion of 1421) may include a first hollow portion 1411a to be inserted.
  • the fixed core pin body portion 1412 has a second hollow portion 1412a provided to insert a portion of the push pin body portion 1422 so that a portion of the push pin body portion 1422 moves within the fixed core pin 141. It can be included.
  • the cross-sectional area of the first hollow part 1411a may be smaller than the cross-sectional area of the second hollow part 1412a. More specifically, the cross-sectional area of the first hollow part 1411a may be prepared to correspond to the cross-sectional area of the pushing part 1421. Therefore, when the pushing part 1421 moves within the first hollow part 1411a, no clearance occurs, and the pushing part 1421 minimizes damage to the shaft hole (h) when separating the impeller (P). You can.
  • the fixed core pin 141 is inserted from the second hollow part 1412a into the first hollow part 1411a to guide the pushing part 1421 from being inserted into the first hollow part 1411a from the second hollow part 1412a. It may include a guide surface 1413 formed to be inclined toward.
  • the pushing pin 142 moves inside the fixed core pin body portion 1412 of the fixed core pin 141, the pushing portion 1421 is inserted into the first hollow portion 1411a smaller than the second hollow portion 1412a. You can move as much as possible.
  • the guide surface 1413 guides the pushing part 1421 inserted from the second hollow part 1412a into the first hollow part 1411a to prevent the pushing part 1421 of the push pin 142 from being damaged. You can.

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

Abstract

Ce dispositif de moulage est destiné à mouler une roue de dispositif de nettoyage comprenant un trou d'arbre dans lequel est inséré un arbre rotatif. Le dispositif de moulage comprend un premier moule, qui comprend un premier noyau de moulage ayant une forme correspondant à une partie de la surface externe de la roue, et un second moule, qui fait face au premier moule et comprend : un deuxième noyau de moulage ayant une forme correspondant à l'autre partie de la surface externe de la roue ; un troisième noyau de moulage ayant une forme correspondant à une partie de la surface interne de la roue ; et un quatrième noyau de moulage, qui est disposé au centre du troisième noyau de moulage et a une forme correspondant à l'autre partie de la surface interne de la roue. Le quatrième noyau de moulage comprend : une broche fixe creuse, qui comporte une partie de formation de trou d'arbre ayant une forme correspondant au trou d'arbre de façon à former le trou d'arbre ; et une broche d'éjecteur, qui peut se déplacer dans la broche-noyau fixe et sépare la roue moulée de la broche-noyau fixe.
PCT/KR2023/014909 2022-12-09 2023-09-26 Dispositif de moulage WO2024122834A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2022-0172048 2022-12-09
KR1020220172048A KR20240086464A (ko) 2022-12-09 2022-12-09 금형 장치

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WO2024122834A1 true WO2024122834A1 (fr) 2024-06-13

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WO (1) WO2024122834A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2677012B2 (ja) * 1990-11-21 1997-11-17 日産自動車株式会社 ダイレクトゲート型射出成形金型
KR20040088334A (ko) * 2003-04-10 2004-10-16 한라공조주식회사 팬 제작용 금형
JP2016037911A (ja) * 2014-08-08 2016-03-22 三菱電機株式会社 インペラおよび射出成形金型装置
JP2017113973A (ja) * 2015-12-24 2017-06-29 株式会社エンプラス インペラの射出成形金型及びインペラの射出成形方法
KR20180047129A (ko) * 2016-10-31 2018-05-10 지엠비코리아 주식회사 임펠러 제조용 금형

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2677012B2 (ja) * 1990-11-21 1997-11-17 日産自動車株式会社 ダイレクトゲート型射出成形金型
KR20040088334A (ko) * 2003-04-10 2004-10-16 한라공조주식회사 팬 제작용 금형
JP2016037911A (ja) * 2014-08-08 2016-03-22 三菱電機株式会社 インペラおよび射出成形金型装置
JP2017113973A (ja) * 2015-12-24 2017-06-29 株式会社エンプラス インペラの射出成形金型及びインペラの射出成形方法
KR20180047129A (ko) * 2016-10-31 2018-05-10 지엠비코리아 주식회사 임펠러 제조용 금형

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KR20240086464A (ko) 2024-06-18

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