CN116551929A - Helical gear demolding mold capable of realizing sequential mold opening control - Google Patents

Helical gear demolding mold capable of realizing sequential mold opening control Download PDF

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Publication number
CN116551929A
CN116551929A CN202310282403.9A CN202310282403A CN116551929A CN 116551929 A CN116551929 A CN 116551929A CN 202310282403 A CN202310282403 A CN 202310282403A CN 116551929 A CN116551929 A CN 116551929A
Authority
CN
China
Prior art keywords
plate
fixed
core
mould
fixed mold
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202310282403.9A
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Chinese (zh)
Inventor
张莉莉
史丛学
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Hualu Panasonic AVC Networks Co Ltd
Original Assignee
China Hualu Panasonic AVC Networks Co Ltd
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 China Hualu Panasonic AVC Networks Co Ltd filed Critical China Hualu Panasonic AVC Networks Co Ltd
Priority to CN202310282403.9A priority Critical patent/CN116551929A/en
Publication of CN116551929A publication Critical patent/CN116551929A/en
Pending legal-status Critical Current

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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
    • B29C45/2602—Mould construction elements
    • 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
    • B29C33/76—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
    • B29C45/26—Moulds
    • B29C45/2602—Mould construction elements
    • B29C45/2606—Guiding or centering means
    • 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
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • B29C45/332—Mountings or guides therefor; Drives therefor
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2015/00—Gear wheels or similar articles with grooves or projections, e.g. control knobs
    • B29L2015/003—Gears
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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

Abstract

The invention discloses a helical gear demolding mold capable of realizing sequential mold opening control, which comprises a fixed mold part and a movable mold part which are matched with each other, wherein the fixed mold part comprises a fixed mold mounting plate and a fixed mold plate, positioning rings are arranged in the fixed mold mounting plate and the fixed mold plate together, a material channel which is directly communicated with a cavity is arranged in the positioning rings, a counter bore is arranged on the bottom end surface of the fixed mold mounting plate, a spring is arranged in the counter bore and is contacted with the top end surface of the fixed mold plate, a core backing plate and a core fixing plate are movably connected in the fixed mold mounting plate, a first limit screw is connected on the core fixing plate, the bottom end of the first limit screw is fixedly connected with the fixed mold plate, a first pressing plate is also arranged in the fixed mold mounting plate, a second pressing plate which is positioned below the first pressing plate is also arranged at the top of the fixed mold plate simultaneously, the core fixing plate is also connected with a guide pillar, and the lower part of the guide pillar penetrates through the first pressing plate and the second pressing plate and is movably connected in a guide sleeve which is arranged in the fixed mold plate.

Description

Helical gear demolding mold capable of realizing sequential mold opening control
Technical Field
The invention relates to the field of injection molding, in particular to a helical gear demolding mold capable of realizing sequential mold opening control.
Background
At present, products such as worm gears, belt pulleys, helical gears and the like are widely applied to transmission systems of automobile sound equipment and various machine core assemblies, and the high-precision worm gear transmission mechanism has the advantages of compact structure, reliable work, high production efficiency and the like, but has complex shape and high production difficulty in dimensional accuracy requirements compared with straight gear products. The common worm gear die tooth form is generally positioned on the same side as the ejection mechanism, and the product demoulding is realized by utilizing the action of die opening of a machine tool and the ejection mode of an ejector rod, but for products with the helical tooth form and a pouring gate positioned on the same side of a fixed die, the existing production mode cannot be realized at all.
When injection molding of a workpiece with helical tooth type is carried out, a rotary demolding mode is generally adopted for demolding operation, the helical tooth type is arranged on the movable mold side in the traditional structure, the demolding and ejection actions are positioned on the same side in the structure, and the sequential action of the mold is realized mainly by using the mold opening action of a machine tool;
however, if the tooth form is provided on the movable die side, the product cannot be ejected because of the limitation of the molding and the use requirement of the product.
There is thus a need for a method or apparatus that solves the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the technical problems, and provides the die which has the advantages of simple structure, ingenious design and reasonable layout and can quickly and smoothly realize the demoulding operation after the injection molding of the helical gear.
The technical scheme of the invention is as follows: the utility model provides a can realize helical gear drawing of patterns mould of order die sinking control which characterized in that: the die comprises a fixed die part and a movable die part which are matched with each other,
the fixed mould part comprises a fixed mould mounting plate 1 and a fixed mould plate 2, a positioning ring 3 is jointly arranged in the fixed mould mounting plate 1 and the fixed mould plate 2, a material channel 4 of a through cavity is arranged in the positioning ring 3, a counter bore is arranged on the bottom end surface of the fixed mould mounting plate 1, a spring 5 is arranged in the counter bore, the spring 5 is contacted with the top end surface of the fixed mould plate 2, a core backing plate 6 and a core fixing plate 7 are movably connected in the fixed mould mounting plate 1, a first limit screw 8 is connected on the core fixing plate 7, the bottom end of the first limit screw 8 is fixedly connected with the fixed mould plate 2, a first pressing plate 9 is also arranged in the fixed mould mounting plate 1, a second pressing plate 10 positioned below the first pressing plate 9 is also arranged at the top of the fixed mould plate 2, the core fixing plate 7 is also connected with a guide pillar 11, the lower part of the guide pillar 11 penetrates through the first pressing plate 9 and the second pressing plate 10 and is movably connected in a guide sleeve 12 arranged in the fixed mould plate 2,
the core fixing plate 7 is connected with the top end of the fixed mold center core 13, the fixed mold center core 13 is positioned in the cavity in the mold closing state, the fixed mold plate 2 is internally provided with a fixed mold core 14, the fixed mold center core 13 is movably connected in the fixed mold core 14 in a penetrating way,
the movable mould part comprises a movable mould core 15 matched with the fixed mould core 14, a movable mould center core 16 matched with the fixed mould center core 13 is arranged in the movable mould core 15,
a second limit screw 17 is arranged in the fixed die mounting plate 1, the bottom end of the second limit screw 17 is fixedly connected with the fixed die plate 2,
the first pressing plate 9 is provided with a through hole, a supporting block 18 is movably connected in the through hole, the supporting block 18 is positioned between the second pressing plate 10 and the core fixing plate 7 in a die clamping state,
the middle part of the fixed die core 14 is provided with a flat shaft section, a driven tooth 19 is sleeved outside the flat shaft section, the driven tooth 19 is meshed with a transition tooth 20 rotatably supported in the fixed die plate 2, and the transition tooth 20 is meshed with a driving tooth 21 arranged on the working end of the driving motor.
Compared with the prior art, the invention has the following advantages:
the helical gear demolding mold capable of achieving sequential mold opening control is simple in structure, ingenious in design and reasonable in layout, a special structure is designed aiming at the problems existing in the use process of a traditional helical gear demolding mold, firstly, tooth-shaped portions are arranged on one side of a fixed mold aiming at products with special shapes, so that products can be ejected normally, the tooth-shaped portions are driven to rotate through a motor and a matched transmission pair, the sequence of primary mold opening and secondary mold opening is controlled through a spring and a limit screw, and separation of the movable fixed mold and ejection of the products can be achieved after the products with helical teeth are separated from a cavity smoothly. The die is safe and reliable, and can ensure smooth production, so that the die has various advantages, is particularly suitable for popularization and application in the field, and has very broad market prospect.
Drawings
Fig. 1 is a schematic diagram of the structure (mold clamping state) of an embodiment of the present invention.
Fig. 2 is a schematic structural view (one-shot mold opening) of the embodiment of the present invention.
Fig. 3 is a schematic view of the structure of the embodiment of the present invention (the stationary mold center core is retracted).
Fig. 4 is a schematic structural diagram (secondary die opening) of an embodiment of the present invention.
Fig. 5 is a schematic structural view of a passive tooth and an active tooth portion according to an embodiment of the present invention.
Detailed Description
Specific embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in fig. 1 to 5: a helical gear demoulding mould capable of realizing sequential mould opening control comprises a fixed mould part and a movable mould part which are mutually matched,
the fixed mould part comprises a fixed mould mounting plate 1 and a fixed mould plate 2, a positioning ring 3 is jointly arranged in the fixed mould mounting plate 1 and the fixed mould plate 2, a material channel 4 of a through cavity is arranged in the positioning ring 3, a counter bore is arranged on the bottom end surface of the fixed mould mounting plate 1, a spring 5 is arranged in the counter bore, the spring 5 is contacted with the top end surface of the fixed mould plate 2, a core backing plate 6 and a core fixing plate 7 are movably connected in the fixed mould mounting plate 1, a first limit screw 8 is connected on the core fixing plate 7, the bottom end of the first limit screw 8 is fixedly connected with the fixed mould plate 2, a first pressing plate 9 is also arranged in the fixed mould mounting plate 1, a second pressing plate 10 positioned below the first pressing plate 9 is also arranged at the top of the fixed mould plate 2, the core fixing plate 7 is also connected with a guide pillar 11, the lower part of the guide pillar 11 penetrates through the first pressing plate 9 and the second pressing plate 10 and is movably connected in a guide sleeve 12 arranged in the fixed mould plate 2,
the core fixing plate 7 is connected with the top end of the fixed mold center core 13, the fixed mold center core 13 is positioned in the cavity in the mold closing state, the fixed mold plate 2 is internally provided with a fixed mold core 14, the fixed mold center core 13 is movably connected in the fixed mold core 14 in a penetrating way,
the movable mould part comprises a movable mould core 15 matched with the fixed mould core 14, a movable mould center core 16 matched with the fixed mould center core 13 is arranged in the movable mould core 15,
a second limit screw 17 is arranged in the fixed die mounting plate 1, the bottom end of the second limit screw 17 is fixedly connected with the fixed die plate 2,
the first pressing plate 9 is provided with a through hole, a supporting block 18 is movably connected in the through hole, the supporting block 18 is positioned between the second pressing plate 10 and the core fixing plate 7 in a die clamping state,
the middle part of the fixed die core 14 is provided with a flat shaft section, a driven tooth 19 is sleeved outside the flat shaft section, the driven tooth 19 is meshed with a transition tooth 20 rotatably supported in the fixed die plate 2, and the transition tooth 20 is meshed with a driving tooth 21 arranged on the working end of the driving motor.
The helical gear demolding mold capable of realizing sequential mold opening control disclosed by the embodiment of the invention has the following working processes: in the mold closing state (as shown in fig. 1), the fixed mold core 14 and the movable mold core 15 are in a mutually matched state, the fixed mold center core 13 and the movable mold center core 16 are also in a mutually matched state, a forming machine injects materials in a molten state into a cavity through a material channel 4, and the materials enter the cavity to be filled, cooled and formed, and then the mold is opened;
after the pressure between the moving die part and the fixed die part is removed, the fixed die mounting plate 1 and the fixed die plate 2 are opened firstly (as shown in fig. 2) under the action of the spring 5, and in the process of mutual movement of the fixed die part and the fixed die plate, the movement of the fixed die plate 2 pulls the fixed die plate 7 to move together as the fixed die plate 7 is connected with the fixed die plate 2 through the first limit screw 8, namely the fixed die plate 7 moves relative to the fixed die mounting plate 1, and in the process, the fixed die center core 13 does not move relative to the movable die center core 16 in one-time die opening action as the fixed die plate 7 is also connected with the top end of the fixed die center core 13;
after the one-time mold opening action is finished, the control system sends a signal to the driving motor, the driving motor drives the driving tooth 21 to rotate, the driving tooth 21 drives the driven tooth 19 to rotate through the transition tooth 20, the center of the driven tooth 19 is connected with the flat shaft section in the middle of the fixed mold core 14, so that the driven tooth 19 drives the fixed mold core 14 to rotate, and the workpiece is in a spiral helical tooth structure, so that when the fixed mold core 14 rotates relative to the workpiece, the fixed mold core 14 rotates simultaneously to rise, the screw thread removing action is realized, namely the retracting action of the fixed mold core 14 (shown in fig. 3), and in the process, the fixed mold core 14 also corresponds to the driven tooth 19Along the axial direction of the self;
after the thread removing action is finished, the movable mould part continues to move towards the direction away from the fixed mould part (as shown in fig. 4), at the moment, the second limit screw 17 moves to the maximum stroke to pull the fixed mould plate 2, the fixed mould plate 2 cannot move continuously, the movable mould plate drives the movable mould core 15 to be separated from the fixed mould core 14, the mould is opened, a product after thread removing is exposed in the air, the ejector rod on the movable mould side acts to eject the product from the cavity, and then one-time complete demoulding and ejection operation is completed.

Claims (1)

1. The utility model provides a can realize helical gear drawing of patterns mould of order die sinking control which characterized in that: the die comprises a fixed die part and a movable die part which are matched with each other,
the fixed mould part comprises a fixed mould mounting plate (1) and a fixed mould plate (2), wherein a positioning ring (3) is arranged in the fixed mould mounting plate (1) and the fixed mould plate (2) together, a material channel (4) of a through cavity is formed in the positioning ring (3), a counter bore is formed in the bottom end face of the fixed mould mounting plate (1), a spring (5) is arranged in the counter bore, the spring (5) is contacted with the top end face of the fixed mould plate (2), a core backing plate (6) and a core fixing plate (7) are movably connected in the fixed mould mounting plate (1), a first limit screw (8) is connected to the core fixing plate (7), the bottom end of the first limit screw (8) is fixedly connected with the fixed mould plate (2), a first pressing plate (9) is further arranged in the fixed mould mounting plate (1), a second pressing plate (10) positioned below the first pressing plate (9) is further arranged at the top of the fixed mould plate (2), the fixing plate (7) is further connected with a guide pillar (11), the lower part of the guide pillar (11) penetrates through the first pressing plate (10) and is arranged in the guide sleeve (12),
the core fixing plate (7) is connected with the top end of the fixed mold center core (13), the fixed mold center core (13) is positioned in the cavity in a mold clamping state, the fixed mold core (14) is also arranged in the fixed mold plate (2), the fixed mold center core (13) is movably connected in the fixed mold core (14) in a penetrating way,
the movable mould part comprises a movable mould core (15) matched with the fixed mould core (14), a movable mould center core (16) matched with the fixed mould center core (13) is arranged in the movable mould core (15),
a second limit screw (17) is arranged in the fixed die mounting plate (1), the bottom end of the second limit screw (17) is fixedly connected with the fixed die plate (2),
the first pressing plate (9) is provided with a through hole, a supporting block (18) is movably connected in the through hole, the supporting block (18) is positioned between the second pressing plate (10) and the core fixing plate (7) in a die closing state,
the middle part of cover half core (14) is provided with flat axle section, flat axle section overcoat has driven tooth (19), driven tooth (19) intermesh with transition tooth (20) of rotation support in cover half board (2), transition tooth (20) then meshes with initiative tooth (21) that set up on driving motor work end.
CN202310282403.9A 2023-03-22 2023-03-22 Helical gear demolding mold capable of realizing sequential mold opening control Pending CN116551929A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310282403.9A CN116551929A (en) 2023-03-22 2023-03-22 Helical gear demolding mold capable of realizing sequential mold opening control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310282403.9A CN116551929A (en) 2023-03-22 2023-03-22 Helical gear demolding mold capable of realizing sequential mold opening control

Publications (1)

Publication Number Publication Date
CN116551929A true CN116551929A (en) 2023-08-08

Family

ID=87502661

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310282403.9A Pending CN116551929A (en) 2023-03-22 2023-03-22 Helical gear demolding mold capable of realizing sequential mold opening control

Country Status (1)

Country Link
CN (1) CN116551929A (en)

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