CN105459345A - Fan blade injection mold for exhaust fan - Google Patents

Fan blade injection mold for exhaust fan Download PDF

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Publication number
CN105459345A
CN105459345A CN201510952079.2A CN201510952079A CN105459345A CN 105459345 A CN105459345 A CN 105459345A CN 201510952079 A CN201510952079 A CN 201510952079A CN 105459345 A CN105459345 A CN 105459345A
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China
Prior art keywords
moving platen
hole
core
solid plate
die cavity
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Granted
Application number
CN201510952079.2A
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Chinese (zh)
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CN105459345B (en
Inventor
庄燕
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Jiuzhou College Of Vocation & Technology
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Jiuzhou College Of Vocation & Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/32Moulds having several axially spaced mould cavities, i.e. for making several separated articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/72Heating or cooling
    • B29C45/73Heating or cooling of the mould
    • B29C45/7312Construction of heating or cooling fluid flow channels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C2045/2683Plurality of independent mould cavities in a single mould

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

Abstract

The invention discloses a fan blade injection mold for an exhaust fan. The fan blade injection mold comprises a fixed mold assembly (1) and a movable mold assembly (2). A cavity (13) and a mold core (24) are both of a cylindrical split structure and comprise a plurality of structure-identical fan-shaped sub-cavities (131) and fan-shaped sub-mold cores (241) respectively, and the number of the fan-shaped sub-cavities and the fan-shaped sub-mold cores is equal to that of blades of a fan blade. The multiple sub-cavities are assembled in the circumferential direction to form an upper surface structure of the whole fan blade. The multiple sub-mold cores are assembled in the circumferential direction to form a lower surface structure of the whole fan blade. Circular-arc-shaped grooves are formed in circumferential direction of the cylindrical faces of the cavity and the mold core which are of the cylindrical split structure. The circular-arc-shaped grooves of the cavity are in sealed communication with a cooling water channel inside a fixed mold plate through the ends. The circular-arc-shaped grooves of the mold core are in sealed communication with a cooling water channel inside a movable mold plate through the ends. The cavity and the mold core of the fan blade injection mold for the exhaust fan are easy to process, and low mold manufacturing cost and mold maintaining cost can be achieved.

Description

A kind of ventilation fan flabellum injection mold
Technical field
The present invention relates to a kind of injection mold, specifically a kind of ventilation fan flabellum injection mold, belongs to injection molding technology field.
Background technology
Ventilation fan is also known as draft fan, ventilating fan, and be the class air adjustment electricity-saving appliance driving flabellum rotary actuation air-flow that indoor-outdoor air is exchanged by motor, the object of air draft is exactly to remove indoor foul atmosphere, regulates temperature, humidity and sensory effect.
Flabellum is one of topmost parts of ventilation fan, the flabellum of industrial large-scale ventilation fan and early stage civilian or vehicle carried air exchanging fan adopts metal material usually, in recent years due to a large amount of uses of plastics, the injection molding flabellums such as ABS, AS that lightweight and intensity is high are widely used.
Flabellum is as the execution unit of ventilation fan, and as shown in Figure 1, the matrix inserts comprising blade and be connected with electric machine main shaft, the impact of the flabellum parameters on shift gas fan performances such as blade tilt, vane curvature, blade radian, blade pitgh and lobe numbers is most important.
Existing flabellum injection mold is normally integrally-built, and namely die cavity and core are made into according to flabellum and matrix inserts the integrally-built die cavity and core that coordinate in correspondence with each other, and this integrally-built flabellum injection mold has following defect:
1. the die cavity of flabellum injection mold and the structure of core more complicated, usual needs complete processing on the numerical control machining center of multifreedom controlling, because flabellum has vane curvature, therefore milling cutter is usually adopted to carry out numerical control curve milling perpendicular to machined surface when processing the curvature portion of flabellum molding mold cavity and core, but Machining of Curved Surface is often subject to the restriction of blade tilt and blade pitgh, blade tilt is larger, the less then Machining of Curved Surface of blade pitgh is more difficult, milling cutter can cause interference to the position of adjacent blades on die cavity and core, and then cause overall processing difficulty, die manufacturing cost is higher,
2. integrally-built die cavity and core maintenance inconvenience, the die cavity of a certain blade or core size because of collide with or the reason such as improper use cause overproof after cannot continue to use and namely cause whole die cavity or core cannot continue to use, and then be difficult to ensure that the required precision of plastic entirety, mould maintenance cost are higher;
3. the water channel design that the water channel of existing flabellum injection mold is normally traditional, namely be arranged on moving platen and solid plate inner, form meander line structure by multiple craspedodrome channel connection, due to die cavity and the core normally circular configuration of flabellum injection mold, therefore this traditional channel structure is unfavorable for directly cooling fast die cavity and core, and then can not realize higher production efficiency;
The injection molding materials such as 4.ABS, AS are lightweight and intensity is high, and the blade wall of therefore injection mo(u)lding is usually very thin can meet instructions for use, but when easily causing the demoulding to release compared with the flabellum of slim vane wall, paddles elastomeric is out of shape, is not easily pushed out.
Summary of the invention
For the problems referred to above, the invention provides a kind of ventilation fan flabellum injection mold, its die cavity and core are easy to processing, and then realize lower die manufacturing cost and mould maintenance cost.
For achieving the above object, this ventilation fan flabellum injection mold comprises cover half assembly and dynamic model assembly;
Described cover half assembly comprises top clamping plate, solid plate and die cavity;
Top clamping plate is provided with sprue bush, guide pillar through hole and range line pull bar, and sprue bush is fixedly connected on top clamping plate inside; Guide pillar through hole is the multiple through holes vertically running through top clamping plate; Range line pull bar is set to multiple perpendicular to top clamping plate, its top is fixedly connected on top clamping plate, and its bottom is provided with the positive stop lug boss that size is greater than the body of rod;
Solid plate lower surface is provided with circular indent step, and the lower surface of solid plate upper surface or top clamping plate is provided with main running channel and shunting running channel, and main running channel is communicated with the cast gate of sprue bush with shunting running channel; On solid plate, the position of corresponding guide pillar through hole is also provided with multiple vertically through the guide pin bushing that solid plate is also fixedly connected with it; The position of the corresponding range line pull bar of solid plate is provided with multiple range line pull bar pilot hole vertically running through solid plate, the outside dimension matched in clearance of the internal diameter size of range line pull bar pilot hole and the positive stop lug boss of range line pull bar, positioning step is provided with in the middle part of range line pull bar pilot hole, the internal diameter size of positioning step and the outside dimension matched in clearance of the range line pull bar body of rod, positioning step top arranges and pushes away mould spring; Solid plate is provided with cooling water pipe joint, and cooling water pipe joint is communicated with the cooling-water duct of solid plate inside; On solid plate, the position of corresponding circular indent step is provided with dismounting fabrication hole;
Die cavity is by being arranged on dowel hole on solid plate and alignment pin location is fixedly mounted in the circular indent step of solid plate, die cavity is cylindrical Split type structure, comprise the fan-shaped subtype chamber that the quantity multiple structures identical with the blade quantity of flabellum are identical, the lower surface in fan-shaped subtype chamber is arranged to the surface texture identical with the portion of upper surface appearance and size of the upper surface of blade, matrix inserts, the surface structure of multiple fan-shaped subtype chamber along the circumferential direction whole flabellum of assembled formation; Shunting running channel on solid plate extends through die cavity downwards, and the shunting running channel through die cavity is the pyramidal structure that lower end is little, upper end is large;
Described dynamic model assembly comprises Bottom clamp plate, dynamic model gripper shoe, moving platen, core and backform device;
Bottom clamp plate is provided with injection machine push-rod hole, injection machine push rod heads into dynamic model component internal by injection machine push-rod hole;
Dynamic model gripper shoe at least arranges two pieces, and symmetry is fixedly installed on the upper surface of Bottom clamp plate;
Moving platen is erected in dynamic model gripper shoe and is also fixedly connected with it, and the position of the circular indent step of the corresponding solid plate of upper surface of moving platen is also provided with circular indent step; On moving platen, the position of corresponding guide pin bushing is provided with the guide pillar being fixedly connected with moving platen, coordinating with guide pin bushing internal diameter size, and guide pillar penetrates in guide pin bushing; On moving platen, the position of corresponding range line pull bar pilot hole is vertically provided with the range line pull bar identical with the internal diameter size of range line pull bar pilot hole and leads elongated pore; Moving platen is also provided with multiple thimble through hole, thimble through hole is arranged on the circular indent step of moving platen perpendicular to moving platen; Moving platen is provided with cooling water pipe joint, and cooling water pipe joint is communicated with the cooling-water duct of moving platen inside; On moving platen, the position of corresponding circular indent step is provided with dismounting fabrication hole;
Core is by being arranged on dowel hole on moving platen and alignment pin location is fixedly mounted in the indent step of moving platen, core is cylindrical Split type structure, comprise the fan-shaped subtype core that the quantity multiple structures identical with the blade quantity of flabellum are identical, the upper surface of fan-shaped subtype core is arranged to the surface texture identical with the portion inner surface appearance and size of the lower surface of blade, matrix inserts, the lower surface configuration of multiple fan-shaped subtype core along the circumferential direction whole flabellum of assembled formation; The thimble through hole of moving platen upwards extends through core;
Backform device comprises push pedal, ejector guide pillar, push pedal guide pillar, back-moving spring and thimble, and push pedal is arranged on the frame-type inside configuration that dynamic model gripper shoe surrounds; Ejector guide pillar at least arranges two pieces, is vertically also fixedly connected with it through push pedal; Push pedal guide pillar coordinates with ejector guide pillar size and quantity and penetrates in ejector guide pillar, and push pedal guide pillar two ends are fixedly connected on Bottom clamp plate and moving platen respectively; Back-moving spring is socketed on push pedal guide pillar, and back-moving spring one end leans push pedal, the other end leans moving platen; The cross-sectional profile size of thimble and the thimble shape of through holes dimensional fits of moving platen, the bottom of thimble is vertically fixedly mounted on the position of push pedal just to the thimble through hole of moving platen, and the top of thimble penetrates in the thimble through hole of moving platen.
Scheme as a further improvement on the present invention, this ventilation fan flabellum injection mold adopts a mould two chamber layout, and described sprue bush is arranged on the center of top clamping plate; Described solid plate lower surface is provided with two the circular indent steps be symmetrical set with top clamping plate center, and the position of the circular indent step of the corresponding solid plate of upper surface of described moving platen is also provided with two circular indent steps; Described die cavity and the quantity of core are set to two pieces respectively.
Scheme as a further improvement on the present invention, the position vertical direction of described solid plate and/or the corresponding sprue bush of moving platen is provided with drawing of being communicated with sprue bush cast gate and expects hole; Described backform device also comprises sprue puller, sprue puller bottom is vertically fixedly mounted on push pedal just to drawing on the position in material hole, sprue puller expects that hole dimension coordinates, top penetrates to draw and expects in hole with drawing, and sprue puller top is also provided with " Z " font step or swallow-tail form step.
Scheme as a further improvement on the present invention, the described die cavity of cylindrical Split type structure and the face of cylinder of core are provided with the circular groove in circumferentially direction, be connected to each other the whole circular groove on forming cavity by end face seal between groove on multiple fan-shaped subtype chamber, be connected to each other the whole circular groove on forming core by end face seal between groove on multiple fan-shaped subtype core, the circular groove of die cavity is communicated with by end part seal with the cooling-water duct of solid plate inside, the circular groove of core is communicated with by end part seal with the cooling-water duct of moving platen inside.
Scheme as a further improvement on the present invention, the dowel hole on described solid plate and moving platen and alignment pin are arranged in dismounting fabrication hole and fabrication hole is concentric arranges with dismounting.
Scheme as a further improvement on the present invention, the center, one end that described alignment pin deviates from die cavity and core is provided with screwed hole.
Scheme as a further improvement on the present invention, the distance between the surface texture that die cavity described in during matched moulds state forms blade upper surface forms blade lower surface surface texture to described core is descending setting by the center of die cavity and core to peripheral direction.
Scheme as a further improvement on the present invention, described backform device also comprises push rod gripper shoe, and push rod gripper shoe is fixedly connected with push pedal, and described thimble, the bottom of sprue puller are fixedly mounted in push pedal by push rod gripper shoe.
Compared with prior art, the die cavity of this ventilation fan flabellum injection mold and core are all cylindrical Split type structures, comprise the identical fan-shaped subtype chamber of the quantity multiple structures identical with the blade quantity of flabellum and fan-shaped subtype core respectively, the surface structure of multiple fan-shaped subtype chamber along the circumferential direction whole flabellum of assembled formation, the lower surface configuration of multiple fan-shaped subtype core along the circumferential direction whole flabellum of assembled formation, therefore processing to compare with direction and integrally-built die cavity and core at the angle of inclination of processing fan-shaped subtype chamber and milling cutter during fan-shaped subtype core does not need repeatedly to adjust, relatively simple, and multiple identical fan-shaped subtype chamber can form overall die cavity and core with multiple identical fan-shaped subtype core is assembled, therefore the die cavity of Split type structure and the more integrally-built die cavity of core and core mold manufacturing cost relatively low, the die cavity of Split type structure and core are easy to safeguard, the die cavity of a certain blade or core size because of collide with or the reason such as improper use cause overproof after cannot continue use time only need dismounting and change, mould maintenance cost is lower, because the die cavity of cylindrical Split type structure and the face of cylinder of core are provided with the circular groove in circumferentially direction, the circular groove of die cavity is communicated with by end part seal with the cooling-water duct of solid plate inside, the circular groove of core is communicated with by end part seal with the cooling-water duct of moving platen inside, therefore cooling water through the cooling water channel of solid plate and moving platen inside ringwise around die cavity and core, directly can cool fast die cavity and core, and on the die cavity of cylindrical Split type structure and the face of cylinder of core, facilitate Machining Arc connected in star when processing water channel, only need drill through water channel at solid plate and moving platen correspondence position, multiple craspedodrome passage and plugging technology hole need not be drilled through, be convenient to processing and fabricating, distance between the surface texture forming blade upper surface due to die cavity during matched moulds state forms blade lower surface surface texture to described core is descending setting by the center of die cavity and core to peripheral direction, therefore the flabellum blade Shi You center of injection mo(u)lding is to thin structure by thick to peripheral direction, blade strength can be increased, reduce the elastic deformation amount of blade, be beneficial to flabellum to be released by entirety when the demoulding, the integral molded plastic being specially adapted to ventilation fan flabellum is shaping.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure schematic diagram of ventilation fan flabellum;
Fig. 2 is the plan structure schematic diagram of the present invention one mould two cavity configuration;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the B-B sectional view of Fig. 2;
Fig. 5 is the three-dimensional structure schematic diagram of the fan-shaped subtype core of the present invention;
Fig. 6 is the three-dimensional structure schematic diagram of core of the present invention;
Fig. 7 is that the I of Fig. 3 is to partial enlarged view.
In figure: 1, cover half assembly, 11, top clamping plate, 111, sprue bush, 112, guide pillar through hole, 113, range line pull bar, 12, solid plate, 121, guide pin bushing, 122, range line pull bar pilot hole, 123, push away mould spring, 13, die cavity, 131, fan-shaped subtype chamber, 2, dynamic model assembly, 21, Bottom clamp plate, 211, injection machine push-rod hole, 22, dynamic model gripper shoe, 23, moving platen, 231, guide pillar, 24, core, 241, fan-shaped subtype core, 25, backform device, 251, push pedal, 252, push rod gripper shoe, 253, ejector guide pillar, 254, push pedal guide pillar, 255, back-moving spring, 256, thimble, 257, sprue puller.
Detailed description of the invention
Be injected into example with vertical below, the present invention will be further described by reference to the accompanying drawings.
As shown in Figures 2 to 4, this ventilation fan flabellum injection mold comprises cover half assembly 1 and dynamic model assembly 2 (below with the direction of cover half assembly 1 on whole mould for top describes).
Described cover half assembly 1 comprises top clamping plate 11, solid plate 12 and die cavity 13;
Top clamping plate 11 is provided with sprue bush 111, guide pillar through hole 112 and range line pull bar 113, and it is inner that sprue bush 111 is fixedly connected on top clamping plate 11; Guide pillar through hole 112 is the multiple through holes vertically running through top clamping plate 11; Range line pull bar 113 is set to multiple perpendicular to top clamping plate 11, and its top is fixedly connected on top clamping plate 11, and its bottom is provided with the positive stop lug boss that size is greater than the body of rod;
Solid plate 12 lower surface is provided with circular indent step, and the lower surface of solid plate 12 upper surface or top clamping plate 11 is provided with main running channel and shunting running channel, and main running channel is communicated with the cast gate of sprue bush 111 with shunting running channel; On solid plate 12, the position of corresponding guide pillar through hole 112 is also provided with multiple vertically through the guide pin bushing 121 that solid plate 12 is also fixedly connected with it; The position of solid plate 12 corresponding range line pull bar 113 is provided with multiple range line pull bar pilot hole 122 vertically running through solid plate 12, the outside dimension matched in clearance of the internal diameter size of range line pull bar pilot hole 122 and the positive stop lug boss of range line pull bar 113, positioning step is provided with in the middle part of range line pull bar pilot hole 122, the internal diameter size of positioning step and the outside dimension matched in clearance of range line pull bar 113 body of rod, positioning step top arranges and pushes away mould spring 123; Solid plate 12 is provided with cooling water pipe joint, and cooling water pipe joint is communicated with the cooling-water duct of solid plate 12 inside; On solid plate 12, the position of corresponding circular indent step is provided with dismounting fabrication hole;
Die cavity 13 is by being arranged on dowel hole on solid plate 12 and alignment pin location is fixedly mounted in the circular indent step of solid plate 12, die cavity 13 is cylindrical Split type structures, comprise the fan-shaped subtype chamber 131 that the quantity multiple structures identical with the blade quantity of flabellum are identical, the lower surface in fan-shaped subtype chamber 131 is arranged to the surface texture identical with the portion of upper surface appearance and size of the upper surface of blade, matrix inserts, the surface structure of multiple fan-shaped subtype chamber 131 along the circumferential direction whole flabellum of assembled formation; Shunting running channel on solid plate 12 extends through die cavity 13 downwards, and conveniently solidifying material takes out, and the shunting running channel through die cavity 13 is the pyramidal structure that lower end is little, upper end is large.
Described dynamic model assembly 2 comprises Bottom clamp plate 21, dynamic model gripper shoe 22, moving platen 23, core 24 and backform device 25;
Bottom clamp plate 21 is provided with injection machine push-rod hole 211, it is inner that injection machine push rod heads into dynamic model assembly 2 by injection machine push-rod hole 211;
Dynamic model gripper shoe 22 at least arranges two pieces, and symmetry is fixedly installed on the upper surface of Bottom clamp plate 21;
Moving platen 23 is erected in dynamic model gripper shoe 22 and is also fixedly connected with it, and the position of the circular indent step of the corresponding solid plate 12 of upper surface of moving platen 23 is also provided with circular indent step; On moving platen 23, the position of corresponding guide pin bushing 121 is provided with the guide pillar 231 being fixedly connected with moving platen 23, coordinating with guide pin bushing 121 internal diameter size, and guide pillar 231 penetrates in guide pin bushing 121, play the guiding role with during 2 die sinking of dynamic model assembly at cover half assembly 1; On moving platen 23, the position of corresponding range line pull bar pilot hole 122 is vertically provided with the range line pull bar identical with the internal diameter size of range line pull bar pilot hole 122 and leads elongated pore; Moving platen 23 is also provided with multiple thimble through hole, thimble through hole is arranged on the circular indent step of moving platen 23 perpendicular to moving platen 23; Moving platen 23 is provided with cooling water pipe joint, and cooling water pipe joint is communicated with the cooling-water duct of moving platen 23 inside; On moving platen 23, the position of corresponding circular indent step is provided with dismounting fabrication hole;
Core 24 is by being arranged on dowel hole on moving platen 23 and alignment pin location is fixedly mounted in the indent step of moving platen 23, core 24 is cylindrical Split type structures, as shown in Figure 5, Figure 6, comprise the fan-shaped subtype core 241 that the quantity multiple structures identical with the blade quantity of flabellum are identical, the upper surface of fan-shaped subtype core 241 is arranged to the surface texture identical with the portion inner surface appearance and size of the lower surface of blade, matrix inserts, the lower surface configuration of multiple fan-shaped subtype core 241 along the circumferential direction whole flabellum of assembled formation; The thimble through hole of moving platen 23 upwards extends through core 24;
Backform device 25 comprises push pedal 251, ejector guide pillar 253, push pedal guide pillar 254, back-moving spring 255 and thimble 256, and push pedal 251 is arranged on the frame-type inside configuration that dynamic model gripper shoe 22 surrounds; Ejector guide pillar 253 at least arranges two pieces, is vertically also fixedly connected with it through push pedal 251; Push pedal guide pillar 254 coordinates with ejector guide pillar 253 size and quantity and penetrates in ejector guide pillar 253, and push pedal guide pillar 254 two ends are fixedly connected on Bottom clamp plate 21 and moving platen 23 respectively; Back-moving spring 255 is socketed on push pedal guide pillar 254, and back-moving spring 255 one end leans push pedal 251, the other end leans moving platen 23; The cross-sectional profile size of thimble 256 and the thimble shape of through holes dimensional fits of moving platen 23, the bottom of thimble 256 is vertically fixedly mounted on the position of push pedal 251 just to the thimble through hole of moving platen 23, and the top of thimble 256 penetrates in the thimble through hole of moving platen 23;
This ventilation fan flabellum injection mold is when matched moulds state, as shown in Figures 2 to 4, cover half assembly 1 and dynamic model assembly about 2 combine, now push pedal 251 is positioned at the lower end of the frame-type structure that two pieces dynamic model gripper shoe 22 surrounds, in the thimble through hole that the top of thimble 256 penetrates moving platen 23 and with the upper surface rounding off of core 24; The lower surface of top clamping plate 11 and the upper surface laminating of solid plate 12; The lower surface of solid plate 12 and the upper surface laminating of moving platen 23, the bottom of range line pull bar 113 is positioned at the bottom of the range line pull bar guiding elongated pore on moving platen 23, pushes away mould spring 123 and is in compressive state; The top of die cavity 13, core 24 and thimble 256 surrounds the body cavity of ventilation fan flabellum injection moulding jointly.
This ventilation fan flabellum injection mold can be taked horizontal installation or vertically be arranged on horizontal or vertical injection molding machine, below describe and be installed as example with vertical, before injection moulding work, first by this ventilation fan flabellum injection mold clamping under matched moulds state on injection machine, the Bottom clamp plate 21 of dynamic model assembly 2 to be fixedly mounted on lathe moving platen and to make injection machine push-rod hole 211 align injection machine push rod on lathe moving platen, the top clamping plate 11 of cover half assembly 1 is fixedly mounted on lathe solid plate, and solid plate 12 is connected cooling water source with the cooling water pipe joint on moving platen 23;
As shown in Figure 3, injection moulding is carried out when foregoing matched moulds state, injection molding material with pressure is squeezed in this ventilation fan flabellum injection mold through sprue bush 111, under the effect of injection pressure, injection molding material is full of rapidly the ventilation fan flabellum injection moulding body cavity jointly surrounded by the top of die cavity 13, core 24 and thimble 256, when injection pressure reaches setting pressure, stop pump pressure; The cooling water of solid plate 12 and moving platen 23 inside immediately circulating cooling carries out fast cooling to die cavity 13 and core 24, the injection molding material in body cavity and quick solidification shaping;
After injection molding material coagulation forming, carry out die sinking feeding: start injection machine lathe and make lathe moving platen move down die sinking, drive dynamic model assembly 2 to move down; Meanwhile, the mould spring 123 that pushes away being in compressive state discharges elastic force, make solid plate 12 be separated with top clamping plate 11 and follow dynamic model assembly 2 to move down, i.e. I-I die joint first somatotype as shown in Figure 3, namely the solidifying material in sprue bush 111 is separated with the aqueous plastics in injection molding cavity, follow dynamic model assembly 2 moves down;
Stop moving down when the positive stop lug boss that solid plate 12 is displaced downwardly to range line pull bar 113 touches the positioning step of range line pull bar pilot hole 122, dynamic model assembly 2 continues to move down makes moving platen 23 be separated with solid plate 12, i.e. II-II die joint somatotype as shown in Figure 3, namely pulled out by solid plate 12 through the solidifying material in the shunting running channel of die cavity 13, the solidifying material of sprue and runner can take off by operating personnel, and shaping plastic is followed dynamic model assembly 2 and continued to move down;
After injection machine lathe moving platen is displaced downwardly to setpoint distance, injection machine push rod upwards ejects on lathe moving platen, lean in the push pedal 251 of backform device 25 through injection machine push-rod hole 211, injection machine push rod continues to eject makes back-moving spring 255 compress, namely push pedal 251 drives thimble 256 to eject in thimble through hole, shaping plastic is ejected disengaging core 24 and complete backform action, shaping plastic directly takes off by operating personnel;
When to take off after shaping plastic again matched moulds, in the first retraction lathe of injection machine push rod, then lathe moving platen moves and dynamic model assembly 2 and cover half assembly 1 are fitted, in matched moulds process, back-moving spring 255 discharges elastic force simultaneously push pedal 251 is resetted, push pedal 251 drives thimble 256 to be retracted into original state, guide pillar 231 penetrates in guide pin bushing 121, makes dynamic model assembly 2 and cover half assembly 1 accurately involutory, completes mould assembling action.
For enhancing productivity, Injection Industry adopts a multi-cavity mold layout usually, a multi-cavity mold manufactures complicated than singe cavity mold, manufacturing price also can increase according to the increase of die cavity quantity, and often increases a die cavity, and the dimensional accuracy of plastic can reduce, therefore, scheme as a further improvement on the present invention, this ventilation fan flabellum injection mold adopts a mould two chamber layout, and described sprue bush 111 is arranged on the center of top clamping plate 11; Described solid plate 12 lower surface is provided with two the circular indent steps be symmetrical set with top clamping plate 11 center, and the position of the circular indent step of the corresponding solid plate 12 of upper surface of described moving platen 23 is also provided with two circular indent steps; Described die cavity 13 and the quantity of core 24 are set to two pieces respectively.
In order to realize the solidifying material automatic ejection of sprue and runner after die joint somatotype, scheme as a further improvement on the present invention, the position vertical direction of described solid plate 12 and/or the corresponding sprue bush 111 of moving platen 23 is provided with drawing of being communicated with sprue bush 111 cast gate and expects hole; Described backform device 25 also comprises sprue puller 257, sprue puller 257 bottom is vertically fixedly mounted on push pedal 251 just to drawing on the position in material hole, sprue puller 257 expects that hole dimension coordinates, top penetrates to draw and expects in hole with drawing, sprue puller 257 top is also provided with " Z " font step or swallow-tail form step, for the injection molding material after fixedly solidifying; After I-I die joint somatotype, namely solidifying material in sprue bush 111 is separated with the aqueous plastics in injection molding gun, follow dynamic model assembly 2 moves down, after II-II die joint somatotype, namely pulled out by solid plate 12 through the solidifying material in the shunting running channel of die cavity 13, injection machine push rod upwards ejects and promotes push pedal 251 moves on lathe moving platen, drive sprue puller 257 moves first the solidifying material in sprue bush 111 is ejected, realize solidifying material automatic ejection.
In order to realize the quick cooling of die cavity 13 and core 24, further raising injection moulding efficiency, scheme as a further improvement on the present invention, as shown in Figure 2, the die cavity 13 of described cylindrical Split type structure and the face of cylinder of core 24 are provided with the circular groove in circumferentially direction, be connected to each other the whole circular groove on forming cavity 13 by end face seal between groove on multiple fan-shaped subtype chamber 131, be connected to each other the whole circular groove on forming core 24 by end face seal between groove on multiple fan-shaped subtype core 241, the circular groove of die cavity 13 is communicated with by end part seal with the cooling-water duct of solid plate 12 inside, the circular groove of core 24 is communicated with by end part seal with the cooling-water duct of moving platen 23 inside, setting like this, the cooling water channel of cooling water through solid plate 12 and moving platen 23 inside is ringwise around die cavity 13 and core 24, directly can cool fast die cavity 13 and core 24, and on the die cavity 13 of cylindrical Split type structure and the face of cylinder of core 24, facilitate Machining Arc connected in star when processing water channel, only need drill through water channel at solid plate 12 and moving platen 23 correspondence position, multiple craspedodrome passage and plugging technology hole need not be drilled through, be convenient to processing and fabricating.
Dismantle the processing and fabricating of fabrication hole and dowel hole for the ease of solid plate 12 and moving platen 23 and ensure the bulk strength after solid plate 12 and moving platen 23 processing, scheme as a further improvement on the present invention, dowel hole on described solid plate 12 and moving platen 23 and alignment pin are arranged in dismounting fabrication hole and fabrication hole is concentric arranges with dismounting, setting like this, not only reduce Drilling operation number of times, ensure solid plate 12 and moving platen 23 process after bulk strength, and alignment pin not only can have been located, but also be convenient to dismounting.
When mounting and dismounting the alignment pin on solid plate 12 and moving platen 23, owing to being interference fit between alignment pin and locating hole, normally install with the installation direction shock alignment pin of "painted-face" character in opera to die cavity 13 and core 24 on solid plate 12 and moving platen 23, because die cavity 13 and core 24 are generally mould steel material, and dowel hole is arranged with dismounting fabrication hole is concentric, for preventing injuring die cavity 13 and core 24 when installing alignment pin, and prevent the installation site of alignment pin overproof, scheme as a further improvement on the present invention, as Fig. 3, shown in Fig. 7, the center, one end that described alignment pin deviates from die cavity 13 and core 24 is provided with screwed hole, setting like this can utilize the back side of technique bar the self-fixing formwork 12 and moving platen 23 coordinated with screwed hole to carry out installation alignment pin, thus can prevent from injuring die cavity 13 and core 24, be convenient to the installation site adjusting alignment pin.
In order to prevent flabellum paddles elastomeric distortion when the demoulding is released, not easily be pushed out, scheme as a further improvement on the present invention, distance between the surface texture that the surface texture that die cavity 13 described in during matched moulds state forms blade upper surface to described core 24 forms blade lower surface is descending setting by the center of die cavity 13 and core 24 to peripheral direction, namely the flabellum blade Shi You center of injection mo(u)lding is to thin structure by thick to peripheral direction, setting like this can increase blade strength, reduce the elastic deformation amount of blade, be beneficial to flabellum to be released by entirety when the demoulding.
Conveniently process and change, and ensure that thimble 256, sprue puller 257 to be accurately positioned in push pedal 251 and to be firmly fixedly connected with push pedal 251, as shown in Figure 3, Figure 4, scheme as a further improvement on the present invention, described backform device 25 also comprises push rod gripper shoe 252, push rod gripper shoe 252 is fixedly connected with push pedal 251, and described thimble 256, the bottom of sprue puller 257 are fixedly mounted in push pedal 251 by push rod gripper shoe 252.
The die cavity 13 of this ventilation fan flabellum injection mold and core 24 are all cylindrical Split type structures, comprise the identical fan-shaped subtype chamber 131 of the quantity multiple structures identical with the blade quantity of flabellum and fan-shaped subtype core 241 respectively, the surface structure of multiple fan-shaped subtype chamber 131 along the circumferential direction whole flabellum of assembled formation, the lower surface configuration of multiple fan-shaped subtype core 241 along the circumferential direction whole flabellum of assembled formation, therefore processing to compare with direction and integrally-built die cavity and core at the angle of inclination of processing fan-shaped subtype chamber 131 and milling cutter during fan-shaped subtype core 241 does not need repeatedly to adjust, relatively simple, and multiple identical fan-shaped subtype chamber 131 can form overall die cavity and core with multiple identical fan-shaped subtype core 241 is assembled, therefore the die cavity of Split type structure and the more integrally-built die cavity of core and core mold manufacturing cost relatively low, the die cavity 13 of Split type structure and core 24 are easy to safeguard, the die cavity of a certain blade or core size because of collide with or the reason such as improper use cause overproof after cannot continue use time only need dismounting and change, mould maintenance cost is lower, because the die cavity 13 of cylindrical Split type structure and the face of cylinder of core 24 are provided with the circular groove in circumferentially direction, the circular groove of die cavity 13 is communicated with by end part seal with the cooling-water duct of solid plate 12 inside, the circular groove of core 24 is communicated with by end part seal with the cooling-water duct of moving platen 23 inside, therefore cooling water through the cooling water channel of solid plate 12 and moving platen 23 inside ringwise around die cavity 13 and core 24, directly can cool fast die cavity 13 and core 24, and on the die cavity 13 of cylindrical Split type structure and the face of cylinder of core 24, facilitate Machining Arc connected in star when processing water channel, only need drill through water channel at solid plate 12 and moving platen 23 correspondence position, multiple craspedodrome passage and plugging technology hole need not be drilled through, be convenient to processing and fabricating, distance between the surface texture that surface texture to the described core 24 forming blade upper surface due to die cavity 13 during matched moulds state forms blade lower surface is descending setting by the center of die cavity 13 and core 24 to peripheral direction, therefore the flabellum blade Shi You center of injection mo(u)lding is to thin structure by thick to peripheral direction, blade strength can be increased, reduce the elastic deformation amount of blade, be beneficial to flabellum to be released by entirety when the demoulding, the integral molded plastic being specially adapted to ventilation fan flabellum is shaping.

Claims (8)

1. a ventilation fan flabellum injection mold, comprises cover half assembly (1) and dynamic model assembly (2), it is characterized in that,
Described cover half assembly (1) comprises top clamping plate (11), solid plate (12) and die cavity (13);
Top clamping plate (11) is provided with sprue bush (111), guide pillar through hole (112) and range line pull bar (113), and it is inner that sprue bush (111) is fixedly connected on top clamping plate (11); Guide pillar through hole (112) is the multiple through holes vertically running through top clamping plate (11); Range line pull bar (113) is set to multiple perpendicular to top clamping plate (11), and its top is fixedly connected on top clamping plate (11), and its bottom is provided with the positive stop lug boss that size is greater than the body of rod;
Solid plate (12) lower surface is provided with circular indent step, the lower surface of solid plate (12) upper surface or top clamping plate (11) is provided with main running channel and shunting running channel, and main running channel is communicated with the cast gate of sprue bush (111) with shunting running channel; The position of the upper corresponding guide pillar through hole (112) of solid plate (12) is also provided with multiple vertical through solid plate (12) and the guide pin bushing (121) be fixedly connected with it; The position of solid plate (12) corresponding range line pull bar (113) is provided with multiple range line pull bar pilot hole (122) vertically running through solid plate (12), the outside dimension matched in clearance of the internal diameter size of range line pull bar pilot hole (122) and the positive stop lug boss of range line pull bar (113), range line pull bar pilot hole (122) middle part is provided with positioning step, the internal diameter size of positioning step and the outside dimension matched in clearance of range line pull bar (113) body of rod, positioning step top arranges and pushes away mould spring (123); Solid plate (12) is provided with cooling water pipe joint, and cooling water pipe joint is communicated with the cooling-water duct of solid plate (12) inside; The position of the upper corresponding circular indent step of solid plate (12) is provided with dismounting fabrication hole;
Die cavity (13) is by being arranged on dowel hole on solid plate (12) and alignment pin location is fixedly mounted in the circular indent step of solid plate (12), die cavity (13) is cylindrical Split type structure, comprise the fan-shaped subtype chamber (131) that the quantity multiple structures identical with the blade quantity of flabellum are identical, the lower surface of fan-shaped subtype chamber (131) is arranged to the upper surface with blade, the surface texture that the portion of upper surface appearance and size of matrix inserts is identical, the surface structure of multiple fan-shaped subtype chamber (131) along the circumferential direction whole flabellum of assembled formation, shunting running channel on solid plate (12) extends through die cavity (13) downwards, and the shunting running channel through die cavity (13) is the pyramidal structure that lower end is little, upper end is large,
Described dynamic model assembly (2) comprises Bottom clamp plate (21), dynamic model gripper shoe (22), moving platen (23), core (24) and backform device (25);
Bottom clamp plate (21) is provided with injection machine push-rod hole (211), it is inner that injection machine push rod heads into dynamic model assembly (2) by injection machine push-rod hole (211);
Dynamic model gripper shoe (22) at least arranges two pieces, and symmetry is fixedly installed on the upper surface of Bottom clamp plate (21);
Moving platen (23) is erected at dynamic model gripper shoe (22) and is above also fixedly connected with it, and the position of the circular indent step of the corresponding solid plate (12) of upper surface of moving platen (23) is also provided with circular indent step; The position of the upper corresponding guide pin bushing (121) of moving platen (23) is provided with the guide pillar (231) being fixedly connected with moving platen (23), coordinating with guide pin bushing (121) internal diameter size, and guide pillar (231) penetrates in guide pin bushing (121); The position of the upper corresponding range line pull bar pilot hole (122) of moving platen (23) is vertically provided with the range line pull bar identical with the internal diameter size of range line pull bar pilot hole (122) and leads elongated pore; Moving platen (23) is also provided with multiple thimble through hole, and thimble through hole is arranged on the circular indent step of moving platen (23) perpendicular to moving platen (23); Moving platen (23) is provided with cooling water pipe joint, and cooling water pipe joint is communicated with the cooling-water duct of moving platen (23) inside; The position of the upper corresponding circular indent step of moving platen (23) is provided with dismounting fabrication hole;
Core (24) is by being arranged on dowel hole on moving platen (23) and alignment pin location is fixedly mounted in the indent step of moving platen (23), core (24) is cylindrical Split type structure, comprise the fan-shaped subtype core (241) that the quantity multiple structures identical with the blade quantity of flabellum are identical, the upper surface of fan-shaped subtype core (241) is arranged to the surface texture identical with the portion inner surface appearance and size of the lower surface of blade, matrix inserts, the lower surface configuration of multiple fan-shaped subtype core (241) along the circumferential direction whole flabellum of assembled formation; The thimble through hole of moving platen (23) upwards extends through core (24);
Backform device (25) comprises push pedal (251), ejector guide pillar (253), push pedal guide pillar (254), back-moving spring (255) and thimble (256), and push pedal (251) is arranged on the frame-type inside configuration that dynamic model gripper shoe (22) surrounds; Ejector guide pillar (253) at least arranges two pieces, vertical to be fixedly connected with it through push pedal (251); Push pedal guide pillar (254) coordinates with ejector guide pillar (253) size and quantity and penetrates in ejector guide pillar (253), and push pedal guide pillar (254) two ends are fixedly connected on Bottom clamp plate (21) and moving platen (23) respectively; Back-moving spring (255) is socketed on push pedal guide pillar (254), and back-moving spring (255) one end leans push pedal (251), the other end leans moving platen (23); The cross-sectional profile size of thimble (256) and the thimble shape of through holes dimensional fits of moving platen (23), the bottom of thimble (256) is vertically fixedly mounted on the position of push pedal (251) just to the thimble through hole of moving platen (23), and the top of thimble (256) penetrates in the thimble through hole of moving platen (23).
2. ventilation fan flabellum injection mold according to claim 1, is characterized in that, this ventilation fan flabellum injection mold adopts a mould two chamber layout, and described sprue bush (111) is arranged on the center of top clamping plate (11); Described solid plate (12) lower surface is provided with two the circular indent steps be symmetrical set with top clamping plate (11) center, and the position of the circular indent step of the corresponding solid plate (12) of upper surface of described moving platen (23) is also provided with two circular indent steps; Described die cavity (13) and the quantity of core (24) are set to two pieces respectively.
3. ventilation fan flabellum injection mold according to claim 2, it is characterized in that, described solid plate (12) and/or the position vertical direction of moving platen (23) corresponding sprue bush (111) are provided with drawing of being communicated with sprue bush (111) cast gate and expect hole; Described backform device (25) also comprises sprue puller (257), sprue puller (257) bottom is vertically fixedly mounted on push pedal (251) just to drawing on the position in material hole, sprue puller (257) expects that hole dimension coordinates, top penetrates to draw and expects in hole with drawing, and sprue puller (257) top is also provided with " Z " font step or swallow-tail form step.
4. ventilation fan flabellum injection mold according to claim 1 and 2, it is characterized in that, the die cavity (13) of described cylindrical Split type structure and the face of cylinder of core (24) are provided with the circular groove in circumferentially direction, be connected to each other the whole circular groove on forming cavity (13) by end face seal between groove on multiple fan-shaped subtype chamber (131), be connected to each other the whole circular groove on forming core (24) by end face seal between groove on multiple fan-shaped subtype core (241), the cooling-water duct that the circular groove of die cavity (13) is inner with solid plate (12) is communicated with by end part seal, the cooling-water duct that the circular groove of core (24) is inner with moving platen (23) is communicated with by end part seal.
5. ventilation fan flabellum injection mold according to claim 1 and 2, it is characterized in that, the dowel hole on described solid plate (12) and moving platen (23) and alignment pin are arranged in dismounting fabrication hole and fabrication hole is concentric arranges with dismounting.
6. ventilation fan flabellum injection mold according to claim 5, is characterized in that, the center, one end that described alignment pin deviates from die cavity (13) and core (24) is provided with screwed hole.
7. ventilation fan flabellum injection mold according to claim 1 and 2, it is characterized in that, the distance between the surface texture that die cavity (13) described in during matched moulds state forms blade upper surface forms blade lower surface surface texture to described core (24) is descending setting by the center of die cavity (13) and core (24) to peripheral direction.
8. ventilation fan flabellum injection mold according to claim 3, it is characterized in that, described backform device (25) also comprises push rod gripper shoe (252), push rod gripper shoe (252) is fixedly connected with push pedal (251), and described thimble (256), the bottom of sprue puller (257) are fixedly mounted in push pedal (251) by push rod gripper shoe (252).
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CN106217729A (en) * 2016-08-04 2016-12-14 无锡尊宝电动车有限公司 A kind of fan manufactures mould
CN106926412A (en) * 2017-04-21 2017-07-07 苏州工业职业技术学院 A kind of rotary part with fan blade rotor, the mould and technique that make the part
CN107379435A (en) * 2017-09-04 2017-11-24 湖北汽车工业学院 A kind of door frame for vehicle sealing strip injection mold and mold system
CN108501336A (en) * 2018-06-04 2018-09-07 上海迪质特信息科技有限公司 Plastic & rubber blade mould conformal waterway cooling system
CN109774086A (en) * 2019-03-29 2019-05-21 宁波语方模塑有限公司 A kind of production method of the profile-followed water circuit system and its lower mold core of plastic impeller mold
CN110142930A (en) * 2019-05-29 2019-08-20 太仓市宇格明叶环保设备有限公司 A kind of mold and integrally formed impeller of efficient integrated injection molding impeller
CN111216318A (en) * 2018-11-27 2020-06-02 黄志清 Mould of concatenation formula advertising panel traffic sign board
CN111361104A (en) * 2020-04-20 2020-07-03 马鞍山市德钢模具制造有限公司 Injection mold with stable location

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Publication number Priority date Publication date Assignee Title
CN106217729A (en) * 2016-08-04 2016-12-14 无锡尊宝电动车有限公司 A kind of fan manufactures mould
CN106926412A (en) * 2017-04-21 2017-07-07 苏州工业职业技术学院 A kind of rotary part with fan blade rotor, the mould and technique that make the part
CN106926412B (en) * 2017-04-21 2023-09-05 苏州工业职业技术学院 Process and mold for preparing rotating part with fan blade rotor
CN107379435A (en) * 2017-09-04 2017-11-24 湖北汽车工业学院 A kind of door frame for vehicle sealing strip injection mold and mold system
CN108501336A (en) * 2018-06-04 2018-09-07 上海迪质特信息科技有限公司 Plastic & rubber blade mould conformal waterway cooling system
CN108501336B (en) * 2018-06-04 2024-03-15 上海迪质特信息科技有限公司 Conformal waterway cooling system for plastic impeller mold
CN111216318A (en) * 2018-11-27 2020-06-02 黄志清 Mould of concatenation formula advertising panel traffic sign board
CN109774086A (en) * 2019-03-29 2019-05-21 宁波语方模塑有限公司 A kind of production method of the profile-followed water circuit system and its lower mold core of plastic impeller mold
CN110142930A (en) * 2019-05-29 2019-08-20 太仓市宇格明叶环保设备有限公司 A kind of mold and integrally formed impeller of efficient integrated injection molding impeller
CN111361104A (en) * 2020-04-20 2020-07-03 马鞍山市德钢模具制造有限公司 Injection mold with stable location

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