CN103121277B - Spiral demoulding device of bevel gear injection mold - Google Patents

Spiral demoulding device of bevel gear injection mold Download PDF

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Publication number
CN103121277B
CN103121277B CN201310075397.6A CN201310075397A CN103121277B CN 103121277 B CN103121277 B CN 103121277B CN 201310075397 A CN201310075397 A CN 201310075397A CN 103121277 B CN103121277 B CN 103121277B
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hole
bearing
die cavity
dynamic
sleeve
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CN103121277A (en
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钱景良
严宇松
王骏啸
李建辉
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NINGBO SIMAI INDUSTRY TECHNOLOGY Co Ltd
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NINGBO SIMAI INDUSTRY TECHNOLOGY Co Ltd
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Abstract

The invention discloses a spiral demoulding device of a bevel gear injection mold. The spiral demoulding device of the bevel gear injection mold comprises a rotary mold cavity (1), a moving mold loading plate (2), a pressing plate (3), a bearing A (4), a bearing B (4) and an ejector sleeve (5). According to the spiral demoulding device, because the device formed by the components above is adopted, the side wall of the rotary mold cavity is provided a bevel gear molded surface which is used for forming a bevel gear product and is also named as bevel gear cavity; the rotary mold cavity can be rotatably arranged between the moving mold loading plate and the pressing plate through the bearing A and the bearing B; the upper part of a core rod of the ejector sleeve is used as a penetrating core for positioning a direct gear embedded element and is positioned in the center of the bevel gear cavity; the lower end of the sleeve core rod is fixedly connected with a base plate of the moving mold; the upper end of a sleeve of the ejector sleeve is positioned on the bottom of an embedded element hole below the bevel gear cavity; and the lower end of the sleeve part is fixedly connected with a top plate of the moving mold. Through the technical scheme that the rotary mold cavity is driven to rotate by the bevel gear product, one mould which can be used for producing multiple bevel gear injection molds by one mold can be simplified in structure, and reduces faults and the cost.

Description

A kind of spiral stripper apparatus of bevel gear injection mold
Technical field
The present invention relates to a kind of demoulding ejecting mechanism of injection mold, specifically refer to the spiral stripper apparatus of a kind of bevel gear injection mold of the ejection device for injection mo(u)lding helical gear goods.
Background technology
Injection mo(u)lding helical gear goods need to carry out spiral ejection device, prior art adopts and drives goods to carry out screw ejection device by oil cylinder through rack drives pinion rotation screw rod, because the complex structure cost of oil cylinder, tooth bar, gear and screw rod linkage switching mechanism is high, especially the cost of manufacture making a mould have more the injection mold of helical gear goods occupies high, and because motion conversion links is many, trouble point is many, cause the maintenance cost of mould production run high, therefore, there are complex structure, fault is many, cost is high problems and shortcomings in prior art.
Summary of the invention
For above-mentioned prior art Problems existing with not enough, the present invention adopts the device be made up of rotation die cavity, dynamic model support plate, pressing plate, A bearing, B bearing, ejector sleeve, rotate the helical teeth profile that the cavity lateral of die cavity is provided with shaping helical gear goods and be called helical teeth chamber, rotating die cavity is rotatably arranged between dynamic model support plate and pressing plate by A bearing, B bearing, the top of the core bar of ejector sleeve is positioned at the center in described helical teeth chamber as the punching of locating straight-tooth inserts, the lower end of core bar is fixedly connected with the base plate of dynamic model, the upper end of the sleeve of ejector sleeve is positioned at the bottom of the insert hole below helical teeth chamber, and sleeve part lower end is fixedly connected with the top board of dynamic model, during work, straight-tooth inserts is inserted in described punching and is inserted in insert hole and injection mo(u)lding is helical gear goods in described helical teeth chamber, during the demoulding, the upper end of the sleeve of ejector sleeve promotes the bottom brought forward helical gear goods moving linearly of straight-tooth inserts, the helical gear goods of keeping straight on are rotated by helical teeth chamber driven rotary die cavity, straight line and rotating synthesizing are screw, make helical gear goods along punching from demoulding technical scheme out in helical teeth chamber, a kind of spiral stripper apparatus of bevel gear injection mold is provided, be intended to the mode by being rotated by the helical gear goods driven rotary die cavity of keeping straight on, a mould is made to have more the mould of helical gear injection-molded item, reach simplification structure, reduce fault, the object reduced costs.
The object of the present invention is achieved like this: a kind of spiral stripper apparatus of bevel gear injection mold, comprise and rotate die cavity, dynamic model support plate, pressing plate, A bearing, B bearing, ejector sleeve, wherein: described rotation die cavity is provided with the steel components of the cylinder step of flange below being, the center rotating die cavity is provided with up-small and down-big step cutting pattern through hole, the small stair hole rotating die cavity top is called helical teeth chamber, and the hole wall in described helical teeth chamber is provided with the profile of the cylinder helical teeth for shaping helical gear goods; The large stepped hole rotating die cavity bottom is called bush hole; What rotate the external flange step of die cavity is provided with A bearing above, and described A bearing is radial ball bearing, inner ring and the cylinder stationary fit rotating die cavity of A bearing;
Described dynamic model support plate is rectangular block shape steel components, columniform newel protruding upward is provided with above dynamic model support plate, the groove be provided with around the annular of newel cylinder with the junction of the cylinder of described newel above of dynamic model support plate is called caulking groove, described caulking groove is built with B bearing, and described B bearing is axial thrust ball bearing; The center of described newel is provided with up big and down small step cutting pattern through hole, and the large stepped hole on newel top is called insert hole, and the hole sidewall of described insert hole is provided with the profile of coincideing with the straight-tooth teeth shape of straight-tooth inserts; The small stair through hole of newel bottom is called wears bore;
Described pressing plate is rectangular block shape steel components, and pressing plate is provided with and is called turns lumen pore through rotating the up-small and down-big step cutting pattern through hole of die cavity, described in turn the hole wall of the large step through-hole of the bottom of lumen pore and the outer ring stationary fit of described A bearing;
Described ejector sleeve be the mould that is made up of core bar and sleeve with ejecting element, wherein, the top of the core bar of ejector sleeve is arranged to coordinate the step of the centre bore of helical gear goods and straight-tooth inserts to be called punching;
Rotate the described bush hole slip cap of die cavity on the described newel of dynamic model support plate, pressing plate is fixedly connected on above dynamic model support plate, turn lumen pore described in pressing plate to be slidably matched with the outer post jamb rotating die cavity, pressing plate by described A bearing with rotate die cavity and roll and be connected, being connected below by contacting to roll with dynamic model support plate with the upper circle of described B bearing of rotation die cavity; The sleeve of ejector sleeve slides to be positioned at described in dynamic model support plate and wears bore, and the upper end of sleeve is concordant with the bottom surface of the described insert hole of newel, and the lower end of sleeve is fixedly connected with the top board of dynamic model; The described punching of the core bar of ejector sleeve is vertically positioned at the center in the described insert hole of newel and the described helical teeth chamber of rotation die cavity, and the lower end of core bar is fixedly connected with the base plate of dynamic model; Dynamic model support plate is fixedly connected on above mould pin.
Operation principle and beneficial effect
During application, mould is horizontal installation, and the above-below direction that structure describes is the fore-and-aft direction of job description.
During work, straight-tooth inserts is inserted in described punching and is fixed by described insert hole, mold-closing injection, straight-tooth inserts is helical gear goods with injection molding in helical teeth chamber, during the demoulding, the sleeve of top board pushing tow ejector sleeve moves forward, the bottom of the upper end promotion straight-tooth inserts of the sleeve of ejector sleeve drives helical gear goods to move forward as straight line, now straight-tooth inserts is still stumbled by the embedding of insert hole, therefore, while helical gear goods move forward as straight line, the helical teeth tooth of helical gear goods rotates through helical teeth chamber driven rotary die cavity, rotate and synthesize screw with rectilinear motion, make helical gear goods along punching from the demoulding in helical teeth chamber out.
The mode that it is screw by the helical gear goods driven rotary die cavity rotating synthesizing of keeping straight on that this device passes through realizes the demoulding of helical gear goods, its structure is simple, reliable operation, cost is low, especially the application that a mould has more helical gear injection mold is applicable to, make a mould have more the mould of helical gear injection-molded item, simplify the structure, decrease fault, reduce cost.
Above-mentioned, the present invention adopts the device be made up of rotation die cavity, dynamic model support plate, pressing plate, A bearing, B bearing, ejector sleeve, rotate the helical teeth profile that the cavity lateral of die cavity is provided with shaping helical gear goods and be called helical teeth chamber, rotating die cavity is rotatably arranged between dynamic model support plate and pressing plate by A bearing, B bearing, the top of the core bar of ejector sleeve is positioned at the center in described helical teeth chamber as the punching of locating straight-tooth inserts, the lower end of core bar is fixedly connected with the base plate of dynamic model, the upper end of the sleeve of ejector sleeve is positioned at the bottom of the insert hole below helical teeth chamber, and sleeve part lower end is fixedly connected with the top board of dynamic model, during work, straight-tooth inserts is inserted in described punching and is inserted in insert hole and injection mo(u)lding is helical gear goods in described helical teeth chamber, during the demoulding, the upper end of the sleeve of ejector sleeve promotes the bottom brought forward helical gear goods moving linearly of straight-tooth inserts, the helical gear goods of keeping straight on are rotated by helical teeth chamber driven rotary die cavity, straight line and rotating synthesizing are screw, make helical gear goods along punching from demoulding technical scheme out in helical teeth chamber, overcome prior art and there is complex structure, fault is many, the problems and shortcomings that cost is high, the spiral stripper apparatus of a kind of bevel gear injection mold provided, by the mode rotated by the helical gear goods driven rotary die cavity of keeping straight on, a mould is made to have more the mould of helical gear injection-molded item, reach simplification structure, reduce fault, the object reduced costs.
Accompanying drawing explanation
Fig. 1 is the spiral stripper apparatus of a kind of bevel gear injection mold of the present invention, is arranged in the structural representation that a mould has more application mould;
Fig. 2 is a kind of schematic diagram of helical gear injection-molded item;
Fig. 3 is the spiral stripper apparatus of a kind of bevel gear injection mold of the present invention, is operated in the principle schematic of helical gear goods synthesis spiral demoulding tense.
Below in conjunction with the embodiment in accompanying drawing, the present invention is described in further detail, but should not be construed as any limitation of the invention.
In figure: rotate die cavity 1, dynamic model support plate 2, newel 21, pressing plate 3, A bearing 4, B bearing 41, ejector sleeve 5, dynamic model 01, top board 011, base plate 012, mould pin 013, cover half 02, de-material version 021, flow distribution plate 022, guide pillar 023, hook pull bar 024, panel 025, cast gate 026, cold burden head 03, helical gear goods 04, straight-tooth inserts 041.
Detailed description of the invention
Consult Fig. 1 ~ Fig. 3, the spiral stripper apparatus of a kind of bevel gear injection mold of the present invention, comprise and rotate die cavity 1, dynamic model support plate 2, pressing plate 3, A bearing 4, B bearing 41, ejector sleeve 5, wherein: described rotation die cavity 1 is the steel components of the cylinder step being provided with flange below, the center rotating die cavity 1 is provided with up-small and down-big step cutting pattern through hole, the small stair hole rotating die cavity 1 top is called helical teeth chamber, and the hole wall in described helical teeth chamber is provided with the profile of the cylinder helical teeth for shaping helical gear goods 04; The large stepped hole rotating die cavity 1 bottom is called bush hole; What rotate the external flange step of die cavity 1 is provided with A bearing 4 above, and described A bearing 4 is radial ball bearing, inner ring and the cylinder stationary fit rotating die cavity 1 of A bearing 4;
Described dynamic model support plate 2 is rectangular block shape steel components, columniform newel 21 protruding upward is provided with above dynamic model support plate 2, the groove be provided with around the annular of newel 21 cylinder with the junction of the cylinder of described newel 21 above of dynamic model support plate 2 is called caulking groove, described caulking groove is built with B bearing 41, and described B bearing 41 is axial thrust ball bearing; The center of described newel 21 is provided with up big and down small step cutting pattern through hole, and the large stepped hole on newel 21 top is called insert hole, and the hole sidewall of described insert hole is provided with the profile of coincideing with the straight-tooth teeth shape of straight-tooth inserts 041; The small stair through hole of newel 21 bottom is called wears bore;
Described pressing plate 3 is rectangular block shape steel components, and pressing plate 3 is provided with and is called turns lumen pore through rotating the up-small and down-big step cutting pattern through hole of die cavity 1, described in turn the hole wall of the large step through-hole of the bottom of lumen pore and the outer ring stationary fit of described A bearing 4;
Described ejector sleeve 5 be the mould that is made up of core bar and sleeve with ejecting element, wherein, the top of the core bar of ejector sleeve 5 is arranged to coordinate the step of the centre bore of helical gear goods 04 and straight-tooth inserts 041 to be called punching;
Rotate the described bush hole slip cap of die cavity 1 on the described newel 21 of dynamic model support plate 2, pressing plate 3 is fixedly connected on above dynamic model support plate 2, turn lumen pore described in pressing plate 3 to be slidably matched with the outer post jamb rotating die cavity 1, pressing plate 3 by described A bearing 4 with rotate die cavity 1 and roll and be connected, being connected below by contacting to roll with dynamic model support plate 2 with the upper circle of described B bearing 41 of rotation die cavity 1; The sleeve of ejector sleeve 5 slides to be positioned at described in dynamic model support plate 2 and wears bore, and the upper end of sleeve is concordant with the bottom surface of the described insert hole of newel 21, and the lower end of sleeve is fixedly connected with the top board 011 of dynamic model; The described punching of the core bar of ejector sleeve 5 is vertically positioned at the center in the described insert hole of newel 21 and the described helical teeth chamber of rotation die cavity 1, and the lower end of core bar is fixedly connected with the base plate 012 of dynamic model; Dynamic model support plate 2 is fixedly connected on above mould pin 013.
Operation principle and beneficial effect
During application, mould is horizontal installation, and the above-below direction that structure describes is the fore-and-aft direction of job description.
During work, straight-tooth inserts 041 is inserted in described punching and is fixed by described insert hole, mold-closing injection, straight-tooth inserts 041 is helical gear goods 04 with injection molding in helical teeth chamber, during the demoulding, the sleeve of top board 011 pushing tow ejector sleeve 5 moves forward, the bottom of the upper end promotion straight-tooth inserts 041 of the sleeve of ejector sleeve 5 drives helical gear goods 04 to move forward as straight line, now straight-tooth inserts 041 is still stumbled by the embedding of insert hole, therefore, while helical gear goods 04 move forward as straight line, the helical teeth tooth of helical gear goods 04 rotates through helical teeth chamber driven rotary die cavity 1, rotate and synthesize screw with rectilinear motion, make helical gear goods 04 along punching from the demoulding in helical teeth chamber out.
The mode that it is screw by helical gear goods 04 driven rotary die cavity 1 rotating synthesizing of keeping straight on that this device passes through realizes the demoulding of helical gear goods 04, its structure is simple, reliable operation, cost is low, especially the application that a mould has more helical gear injection mold is applicable to, make a mould have more the mould of helical gear injection-molded item, simplify the structure, decrease fault, reduce cost.

Claims (1)

1. the spiral stripper apparatus of a bevel gear injection mold, comprise and rotate die cavity (1), dynamic model support plate (2), pressing plate (3), A bearing (4), B bearing (41), ejector sleeve (5), it is characterized in that: described rotation die cavity (1) is the steel components of the cylinder step being provided with flange below, the center rotating die cavity (1) is provided with up-small and down-big step cutting pattern through hole, the small stair hole rotating die cavity (1) top is called helical teeth chamber, the hole wall in described helical teeth chamber is provided with the profile of the cylinder helical teeth for shaping helical gear goods (04), the large stepped hole rotating die cavity (1) bottom is called bush hole, what rotate the external flange step of die cavity (1) is provided with A bearing (4) above, and described A bearing (4) is radial ball bearing, inner ring and the cylinder stationary fit rotating die cavity (1) of A bearing (4),
Described dynamic model support plate (2) is rectangular block shape steel components, columniform newel (21) protruding upward is provided with above dynamic model support plate (2), the groove be provided with around the annular of newel (21) cylinder with the junction of the cylinder of described newel (21) above of dynamic model support plate (2) is called caulking groove, described caulking groove is built with B bearing (41), and described B bearing (41) is axial thrust ball bearing; The center of described newel (21) is provided with up big and down small step cutting pattern through hole, the large stepped hole on newel (21) top is called insert hole, and the hole sidewall of described insert hole is provided with the profile of coincideing with the straight-tooth teeth shape of straight-tooth inserts (041); The small stair through hole of newel (21) bottom is called wears bore;
Described pressing plate (3) is rectangular block shape steel components, the up-small and down-big step cutting pattern through hole that pressing plate (3) is provided with through rotating die cavity (1) is called and turns lumen pore, described in turn the hole wall of the large step through-hole of the bottom of lumen pore and the outer ring stationary fit of described A bearing (4);
Described ejector sleeve (5) is that the mould that is made up of core bar and sleeve is with ejecting element, wherein, the top of the core bar of ejector sleeve (5) is arranged to coordinate the step of the centre bore of helical gear goods (04) and straight-tooth inserts (041) to be called punching;
Rotate the described bush hole slip cap of die cavity (1) on the described newel (21) of dynamic model support plate (2), pressing plate (3) is fixedly connected on above dynamic model support plate (2), turn lumen pore described in pressing plate (3) to be slidably matched with the outer post jamb rotating die cavity (1), pressing plate (3) is rolled by described A bearing (4) is connected with rotation die cavity (1), being connected below by contacting to roll with dynamic model support plate (2) with the upper circle of described B bearing (41) of rotation die cavity (1); The sleeve of ejector sleeve (5) slides to be positioned at described in dynamic model support plate (2) and wears bore, the upper end of sleeve is concordant with the bottom surface of the described insert hole of newel (21), and the lower end of sleeve is fixedly connected with the top board (011) of dynamic model; The described punching of the core bar of ejector sleeve (5) is vertically positioned at the center in the described insert hole of newel (21) and the described helical teeth chamber of rotation die cavity (1), and the lower end of core bar is fixedly connected with the base plate (012) of dynamic model; Dynamic model support plate (2) is fixedly connected on above mould pin (013).
CN201310075397.6A 2013-02-02 2013-02-02 Spiral demoulding device of bevel gear injection mold Active CN103121277B (en)

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CN103660201B (en) * 2013-11-18 2016-09-14 苏州市职业大学 A kind of liftout plate
CN104015318B (en) * 2014-06-04 2016-05-18 常州工学院 Plastic beveled wheel secondary stripper apparatus
CN104827037A (en) * 2015-04-23 2015-08-12 上海精科粉末冶金科技有限公司 Machining method for producing helical gear by adoption of injection molding technology
CN105500630B (en) * 2016-02-24 2017-08-01 厦门精卫模具有限公司 It is a kind of to be molded simultaneous with external screw thread and the mould of helical gear plastic cement part
CN110406155B (en) * 2019-06-26 2021-03-09 南通品杰模塑科技有限公司 Helical gear machining die

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CN2172705Y (en) * 1993-01-15 1994-07-27 伍福泉 Injection mould of steel ball holder
CN2858120Y (en) * 2005-02-03 2007-01-17 湖北汽车工业学院 Multi-direction side loose core die
CN201329659Y (en) * 2009-01-06 2009-10-21 宁海县大鹏模具塑料有限公司 Injection mold dynamic and fixed mould bidirectional helical ejection mechanism
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