CN101817215B - Valve type control device for main-runner sprue hole of injection mould - Google Patents
Valve type control device for main-runner sprue hole of injection mould Download PDFInfo
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- CN101817215B CN101817215B CN2010101676494A CN201010167649A CN101817215B CN 101817215 B CN101817215 B CN 101817215B CN 2010101676494 A CN2010101676494 A CN 2010101676494A CN 201010167649 A CN201010167649 A CN 201010167649A CN 101817215 B CN101817215 B CN 101817215B
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- runner
- hole
- valve rod
- module
- matrix
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Abstract
The invention relates to a valve type control device for a main-runner sprue hole of an injection mould. The device comprises a matrix and a runner module, wherein the runner module is provided with a main runner and a valve rod hold; the lower part of the main runner turns towards the valve rod hole to form a transverse runner; arc transition is adopted between the main runner and the transverse runner; the transverse runner is communicated with the lower part of the valve rod hole to enable the lower part of the valve rod hole to be a part of the runner; the bottom of the valve rod hole shrinks inwards to form a sprue hole; a valve rod is arranged inside the valve rod hole; the lower part of an attachment hole of the matrix is communicated with the upper part of the valve rod hole of the runner module through a matrix transverse hole and a runner module transverse hole to form a through hole; a connecting rod which is connected to the matrix through a pin roll is arranged in the through hole; one end of the connecting rod is connected with the top of the valve rod, while the other end is connected with a lifting piece which is arranged in the attachment hole; the periphery of the runner module above a base is provided with heating pieces; and the heating pieces are arranged in the valve rod. The valve type control device for the main-runner sprue hole of the injection mould has the advantages of eliminating the waste material of a condensing material of a gating system, shortening cooling time, contributing to the flowing of plastic melt in a streamline type runner, and preventing the occurrence of melt decomposition.
Description
Technical field
The present invention relates to valve type control device for main-runner sprue hole of injection mould.
Background technology
Be tens kilograms even reach the cast of up to a hundred kilograms large-scale polyvinyl chloride plastic (PVC) pipe fitting that for quality need the PVC melt of big flow to be filled to mold cavity fast, this is that its 60 ℃ begin to soften because polyvinyl chloride resin is unformed thermosensitive polymer; 180 ℃ begin degraded, and 200 ℃ are decomposed rapidly, and therefore, its forming temperature scope is narrower; Be about 160～190 ℃, even in the forming temperature scope, if residence time of material is long slightly; Also can cause decomposition, special in the less PVC melt of plasticizer loading, because mobile relatively poor; Fill the mould difficulty, so be that flow diameter is big to the die casting system requirements, it is big that the runner gate diameter is wanted; The general diameter of runner gate diameter is more than 10mm, and for this reason, large-scale PVC pipe fitting and PVC housing class running gate system are main with down gate cold runner running gate system at present.See Fig. 4, down gate cold runner running gate system has matrix 1, and matrix 1 has cavity, is provided with runner module 2 in the cavity, and the runner module is provided with sprue 2-1.Above-mentioned down gate cold runner running gate system needs longer cool time; The injection cycle time is long; And thick running gate system condensation material is difficult to remove on the goods, causes a large amount of running gate system condensation material waste materials, among Fig. 5; The part of label 11 is the goods part, and the part of label 12 is running gate system condensation material waste material.Chinese patent number is that the utility model patent specification of ZL200720041512.8 discloses a kind of injection mold hot runner valve type spray nozzle device; This device is that the valve-type spray nozzle device is set in injection mold hot runner; Promptly in the valve pocket hole of each cast gate of mould template, be provided with a valve rod; Each valve rod can be under the control of separately controlling organization, in order each cast gate of opening and closing hot flow path.Above-mentioned utility model patent realization melt filling pattern is dynamically controlled, and reaches and eliminates weld bond or let weld bond place the purpose in the low stress area and the non-outward appearance district of plastic products, is specially adapted to complex-shaped large-scale shell engineering structure part.But owing to divide sprue gating many in the above-mentioned injection mold hot runner; Hot flow path is long and turnover is many; Flowing of impact polymer melt, the pressure loss of flow passage system is bigger, and runner waters young; The PVC melt that can not realize big flow is filled to mold cavity fast, and running gate system condensation material waste problems can not get solving simultaneously.
Summary of the invention
The objective of the invention is to propose a kind ofly do not have running gate system condensation material waste material, help plastic melt and in runner, flow, can prevent the valve type control device for main-runner sprue hole of injection mould that the melt decomposing phenomenon takes place, suit the especially cast of large-scale PVC pipe fitting and PVC housing based article of this device.
For achieving the above object, the present invention takes following technical scheme:
The present invention has matrix and runner module, and the runner module is provided with sprue, it is characterized in that: be provided with the porose base in middle part in the cavity of matrix; Said runner module is fixed on the base, also is provided with valve rod hole on the runner module, and said sprue bottom forms transverse flow channels to the valve rod hole turnover; Arc transition forms streamline channel between sprue and the transverse flow channels, and transverse flow channels is connected the bottom of valve rod hole, makes the bottom of valve rod hole become the part of runner; The formation gate orifice is inwardly shunk in the bottom of valve rod hole, is provided with valve rod in the valve rod hole, and the bottom of valve rod is dome shape and diameter greater than the gate orifice diameter; Matrix is provided with the accessory that opening makes progress; Connect the formation through hole through matrix cross-drilled hole and module cross-drilled hole between the accessory bottom of matrix and the valve rod hole top of runner module, be provided with in the through hole through bearing pin and be connected the connecting rod on the matrix, an end of connecting rod is connected with the top of valve rod; The other end of connecting rod is connected with the lifters that places accessory, and lifters is controlled by lowering or hoisting gear; Said runner module be in base top around be provided with heating member, be provided with heating member in the said valve rod.
Said runner module is made up of upper module and lower module, and the interface of upper module and lower module is through the transverse flow channels center line.
Be provided with the trim ring of stationary flowpath module at the top of said matrix.
Said lowering or hoisting gear is arranged on the matrix outside, and lowering or hoisting gear is cylinder, hydraulic cylinder or electromagnet.
The present invention has following good effect: 1, cast gate of the present invention is by the Push And Release of valve rod control cast gate; Promptly open in injection moulding and packing stage cast gate; Close at mold cools down stage cast gate, make the running gate system of large aperture cast gate form TOP-TIP like this, eliminate thick running gate system condensation material waste material; Save running gate system condensation material waste material cool time, shortened injection molding cycle.2, sprue weak point of the present invention and turning point circular arc excessively form streamline channel; It is unobstructed to guarantee that polymer melt flows; Avoided the cross runner hole interpolymer melt flows of common many cast gates obstructed, expected late, caused producing the decomposition of residual melt and form polymer melt easily.3, the runner modular design is split type, is made up of upper module and lower module, is convenient to the processing of transverse flow channels arc transition.4, the heating member that is provided with heating member and runner module-external in the valve rod makes runner become hot flow path jointly to the heating of runner interpolymer melt, and polymer melt is heated evenly, is convenient to the temperature of polymer melt is controlled at optimum range.5, lowering or hoisting gear drives the valve rod up-down through elevator and connecting rod, and is simple in structure, because lowering or hoisting gear is arranged on the matrix outside, and convenient processing, favourable reducing cost.
Description of drawings
For content of the present invention is more clearly understood,, the present invention is done further detailed explanation, wherein below according to specific embodiment and combine accompanying drawing
Fig. 1 is the configuration diagram of the spherical valve rod of this device when being in opening;
Fig. 2 is the configuration diagram of the spherical valve rod of this device when being in closed condition;
Fig. 3 is spherical valve rod configuration diagram;
Fig. 4 is the configuration diagram of existing down gate cold runner running gate system;
Fig. 5 is a cast condensation waste material diagrammatic sketch.
The specific embodiment
Embodiment 1
See Fig. 1 and Fig. 2, the present invention has matrix 1, and matrix 1 has cavity; Be provided with runner module 2 in the cavity, be provided with base 3 bowl-shape and that the middle part is porose in the cavity, said runner module 2 is sitting on the base 3; Said runner module 2 be in base 3 tops around have the gap, be provided with heating member 7 in the gap.
Said runner module 2 is provided with sprue 2-1 and valve rod hole 2-2; Said sprue 2-1 bottom forms transverse flow channels 2-3 to valve rod hole 2-2 turnover; Arc transition forms streamline channel (seeing a part among Fig. 1) between sprue 2-1 and the transverse flow channels 2-3, and transverse flow channels 2-3 connects the bottom of valve rod hole 2-2, makes the bottom of valve rod hole 2-2 become the part of runner; The bottom of valve rod hole 2-2 is inwardly shunk and is formed gate orifice 2-4; Be provided with valve rod 4 in the valve rod hole 2-2, the bottom of valve rod 4 is dome shape and diameter greater than gate orifice 2-4 diameter, seals gate orifice when valve rod 4 descends.Be provided with heating member 10 in the said valve rod 4.The hole wall of valve rod hole 2-2 is provided with sealing ring 9.
Said runner module 2 is made up of upper module 2A and lower module 2B, and the interface of upper module 2A and lower module 2B is through transverse flow channels 2-3 center line.Interface promptly is the maximum axial cross section of transverse flow channels 2-3, makes transverse flow channels in two, and on upper and lower module, being harmonious promptly forms complete transverse flow channels 2-3 respectively, the convenient like this circular arc processing to sprue and transverse flow channels 2-3 turning point.
Be threaded between said upper module 2A and the base 3, and be connected with trim ring 8 at the top of matrix 1,2 fixations of 8 pairs of runner modules of trim ring.
Said matrix 1 is provided with the accessory 1-1 that opening makes progress, and connects the formation through hole through matrix cross-drilled hole 1-2 and module cross-drilled hole 2-5 between the valve rod hole 2-2 top of the accessory 1-1 bottom of matrix 1 and runner module 2.Be provided with the middle part in the through hole through the connecting rod 5 of bearing pin 5-1 pin joint on matrix 1; One end of connecting rod 5 is connected with the top of valve rod 4; The other end of connecting rod 5 is connected with the lifters that places accessory 1-1 6; Lifters 6 is controlled by being arranged on matrix 1 outside lowering or hoisting gear, and lowering or hoisting gear is cylinder, hydraulic cylinder or electromagnet.
When injection moulding begins; Valve rod is opened sprue cast gate (see figure 1), and injection machine promotes polymer melt and injects mold cavity, finishes until pressurize; Valve rod is closed the cast gate (see figure 2); Accomplish injection cycle,, can realize high-efficiency automatic production owing to removed artificial removal's running gate system condensation material waste material from.
The present invention can calculate the best effort scheme of valve opening and closing time length on the basis of CAE computer-assisted analysis, moved by the work order programme-control that weaves by switch board.
Claims (4)
1. valve type control device for main-runner sprue hole of injection mould; Have matrix (1) and runner module (2); Runner module (2) is provided with sprue (2-1), it is characterized in that: be provided with the porose base (3) in middle part in the cavity of matrix (1), said runner module (2) is fixed on the base (3); Also be provided with valve rod hole (2-2) on the runner module (2); Said sprue (2-1) bottom forms transverse flow channels (2-3) to valve rod hole (2-2) turnover, and arc transition forms streamline channel between sprue (2-1) and the transverse flow channels (2-3), and transverse flow channels (2-3) is connected the bottom of valve rod hole (2-2); Make the bottom of valve rod hole (2-2) become the part of runner; The bottom of valve rod hole (2-2) is inwardly shunk and is formed gate orifice (2-4), is provided with valve rod (4) in the valve rod hole (2-2), and the bottom of valve rod (4) is dome shape and diameter greater than gate orifice (2-4) diameter; Matrix (1) is provided with the accessory (1-1) that opening makes progress; Connect the formation through hole through matrix cross-drilled hole (1-2) and module cross-drilled hole (2-5) between valve rod hole (2-2) top of accessory (1-1) bottom of matrix (1) and runner module (2), be provided with in the through hole through bearing pin and be connected the connecting rod (5) on the matrix (1), an end of connecting rod (5) is connected with the top of valve rod (4); The other end of connecting rod (5) is connected with the lifters that places accessory (1-1) (6), and lifters (6) is controlled by lowering or hoisting gear; Said runner module (2) be in base (3) top around be provided with heating member (7), be provided with heating member (10) in the said valve rod.
2. valve type control device for main-runner sprue hole of injection mould according to claim 1; It is characterized in that: said runner module (2) is made up of upper module (2A) and lower module (2B), and the interface of upper module (2A) and lower module (2B) is through transverse flow channels (2-3) center line.
3. valve type control device for main-runner sprue hole of injection mould according to claim 1 is characterized in that: the trim ring (8) that is provided with stationary flowpath module (2) at the top of said matrix (1).
4. valve type control device for main-runner sprue hole of injection mould according to claim 1 is characterized in that: said lowering or hoisting gear is arranged on the matrix outside, and lowering or hoisting gear is cylinder, hydraulic cylinder or electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101676494A CN101817215B (en) | 2010-05-11 | 2010-05-11 | Valve type control device for main-runner sprue hole of injection mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101676494A CN101817215B (en) | 2010-05-11 | 2010-05-11 | Valve type control device for main-runner sprue hole of injection mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101817215A CN101817215A (en) | 2010-09-01 |
| CN101817215B true CN101817215B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101676494A Expired - Fee Related CN101817215B (en) | 2010-05-11 | 2010-05-11 | Valve type control device for main-runner sprue hole of injection mould |
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| Country | Link |
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| CN (1) | CN101817215B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0614744B1 (en) * | 1993-02-25 | 1998-11-04 | Sony Electronics Inc. | Molding devices |
| CN101249712A (en) * | 2008-04-02 | 2008-08-27 | 许南旭 | Hot-runner pin valve type nozzle for injection molding |
| CN201179713Y (en) * | 2007-11-22 | 2009-01-14 | 常州工学院 | Heat flow path valve type nozzle device of injection mould |
| CN101664984A (en) * | 2009-05-11 | 2010-03-10 | 常州工学院 | Injection mold hot runner valve type vibration type nozzle device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05293853A (en) * | 1992-04-23 | 1993-11-09 | Fujitsu Ltd | In-mold gas injection nozzle |
| JPH1148294A (en) * | 1997-07-31 | 1999-02-23 | Ozeki Hotsuto Rannaa Plan:Kk | Mold for injection molding of product with hole |
-
2010
- 2010-05-11 CN CN2010101676494A patent/CN101817215B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0614744B1 (en) * | 1993-02-25 | 1998-11-04 | Sony Electronics Inc. | Molding devices |
| CN201179713Y (en) * | 2007-11-22 | 2009-01-14 | 常州工学院 | Heat flow path valve type nozzle device of injection mould |
| CN101249712A (en) * | 2008-04-02 | 2008-08-27 | 许南旭 | Hot-runner pin valve type nozzle for injection molding |
| CN101664984A (en) * | 2009-05-11 | 2010-03-10 | 常州工学院 | Injection mold hot runner valve type vibration type nozzle device |
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| Publication number | Publication date |
|---|---|
| CN101817215A (en) | 2010-09-01 |
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