CN110394952A - A kind of plastic helical gear stripper apparatus and method playing the rotation of apical organ secondary cavity - Google Patents
A kind of plastic helical gear stripper apparatus and method playing the rotation of apical organ secondary cavity Download PDFInfo
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- CN110394952A CN110394952A CN201910719763.4A CN201910719763A CN110394952A CN 110394952 A CN110394952 A CN 110394952A CN 201910719763 A CN201910719763 A CN 201910719763A CN 110394952 A CN110394952 A CN 110394952A
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- helical gear
- plastic
- cavity block
- apical organ
- die insert
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses the plastic helical gear stripper apparatus and method of a kind of bullet apical organ secondary cavity rotation.The device includes core fixing plate, moving template, helical gear cavity block, moving die insert, type core, play apical organ component, ejecting mechanism, moving die insert is mounted on core fixing plate, type core is mounted on moving die insert, helical gear cavity block is mounted on moving template, and it is assembled together with moving die insert, between helical gear cavity block and moving template, and there are fit-up gaps between helical gear cavity block and moving die insert, installation plays apical organ component in helical gear cavity block, the corresponding position for playing apical organ component is fluted along outside processing in one week on moving die insert, plastic helical gear is equipped with centre bore, centre bore is the circular hole with square groove, type core is the cylinder with raised line.The present invention realizes that plastic helical gear separates abjection with helical teeth wheel-type chamber along axis direction in demoulding by " reverse " the steady and smooth rotation of helical teeth wheel-type chamber, improves the validity of plastic helical gear demoulding.
Description
Technical field
The present invention relates to a kind of stripper apparatus of plastic helical gear, in particular to a kind of to play the oblique of apical organ secondary cavity rotation
Gear plastic stripper apparatus and method.
Background technique
On the one hand die sinking pickup process after plastic helical gear injection moulding needs to mould gear under ejecting mechanism effect
Part is released along die sinking direction straight line, at the same time, it is also necessary to which gear plastic or the type chamber for forming tooth form press the inclined direction of tooth form
Corresponding rotary motion is carried out, smooth demoulding after the molding of plastic helical gear is just able to achieve.
Through retrieving, existing open source literature and patent have corresponding solution to release problems after the injection moulding of plastic helical gear
Certainly scheme, but there is also certain problem and deficiencies.Similar China Patent No. ZL201310733404.7, data of publication of application are
On March 26th, 2014, invention and created name are as follows: plastic beveled wheel injection molding demolding structure needs to overcome plastic beveled wheel bottom
The sideslip frictional resistance in portion and mandril, and due to the influence of rigging error, mandril end face would generally be slightly above or below oblique
The molded surface of gear bottom, the sliding which limits mandrel ends in plastic beveled wheel bottom, hinders plastic beveled wheel
Rotating stripping demoulding.Similar China Patent No. ZL201110381777.3, data of publication of application are on June 5th, 2013, innovation and creation name
Referred to as: the resetting-mechanism and beveled wheel mold of beveled wheel mold not can be well solved dynamic mould core (tooth form insert) rotary friction
Wipe the excessive problem of resistance.Similar China Patent No. ZL201310075397.6, data of publication of application are on May 29th, 2013, hair
Bright creation title are as follows: a kind of spiral stripper apparatus of bevel gear injection mold is difficult to solve in the actual implementation process rotary-type
Fit clearance problem between chamber and pressing plate and newel, fit clearance is excessive, it cannot be guaranteed that the precision of plastic helical gear, especially
Influence the concentricity of tooth form and centre bore；Fit clearance is too small, increase rotary-type chamber and pressing plate, rotary-type chamber and newel it
Between spin friction resistance, using the abrasion that will aggravate between them for a long time, to reduce the molding of plastic helical gear
Precision.
Through retrieving, similar China Patent No. ZL201210159784.3, data of publication of application is on September 19th, 2012, invention
Create title are as follows: duplex helical gear injection molding demoulding mechanism；Similar China Patent No. ZL201410246036.8, Shen Qing Publication
Day is on September 3rd, 2014, invention and created name are as follows: plastic beveled wheel two stage mold unloading device；Similar China Patent No.
ZL201610209932.6, data of publication of application are on August 24th, 2016, a kind of invention and created name are as follows: helical teeth bicylindrical plastics
The differential demoulding mechanism of gear forming；Similar China Patent No. ZL201710022305.6, data of publication of application are May 10 in 2017
Day, invention and created name are as follows: the isometrical helical gear injecting molding die of two-way plastic；Similar China Patent No.
ZL201710022297.5, data of publication of application are on May 31st, 2017, invention and created name are as follows: the injection moulding of herringbone bear
Demoulding and resetting apparatus.It is rotated by the type chamber that thrust bearing assists plastic helical gear or forms helical teeth tooth form to realize helical teeth
It is demoulded after taking turns the molding of plastic, it is possible to reduce the fretting wear of mold forming part improves having for plastic helical gear shaping and demoulding
Effect property, but mould structure is complicated, and selection, installation, disassembly of bearing etc. are more troublesome, while also needing to consider lubricating oil in bearing
Characteristic and use environment (temperature) requirement, need to avoid lubricating oil greasy dirt exudation enter type chamber and influence plastic helical gear at
Type quality.
Summary of the invention
It is an object of the invention in view of the above-mentioned defects in the prior art and insufficient, propose that a kind of bullets apical organ secondary cavity is revolved
The plastic helical gear stripper apparatus and method turned.
The present invention adopts the following technical scheme:
The present invention provide it is a kind of bullet apical organ secondary cavity rotation plastic helical gear stripper apparatus, including core fixing plate,
Moving template, moving die insert, type core, plays apical organ component, ejecting mechanism at helical gear cavity block, and the moving die insert is mounted on type
In core fixed plate, the type core is mounted on moving die insert, and helical gear cavity block is mounted on moving template, and and moving die insert
Be assembled together, between helical gear cavity block and moving template and between helical gear cavity block and moving die insert there are
Fit-up gap, the ejecting mechanism is used to carry out ejection to plastic helical gear, if the side of the helical gear cavity block is equipped with
A hole is done, installation plays apical organ component in hole, and the position of corresponding bullet apical organ component is machined with for one week along outside on the moving die insert
Groove, it is described to play the molding positioning of apical organ component and groove cooperation realization helical gear cavity block in a mold, the helical gear
Plastic is equipped with centre bore, and the centre bore is the circular hole with square groove, and type core is the cylinder with raised line, and the circular hole is matched with cylinder
Conjunction makes plastic helical gear that can only slide axially with respect to type core and relatively unrotatable, when ejecting mechanism pushes plastic helical gear edge
When axial movement, under the booster action for playing apical organ component, the plastic helical gear drives the rotation of helical gear cavity block, thus
Plastic helical gear is pushed out type core and helical gear cavity block along the type chamber of helical gear cavity block.
Further, the ejecting mechanism includes ejector pin retaining plate mechanism, push rod, ejector guide pillar, push plate guide post, described
One end of push rod is fixed in ejector pin retaining plate mechanism, and the other end is used for ejection plastic helical gear, and the ejector guide pillar fixation is set
It is placed in ejector pin retaining plate mechanism, one end of the push plate guide post is fixed, and the other end is mounted slidably in ejector guide pillar.
Further, the push rod includes push rod I and push rod II, and corresponding position offers push rod on the moving die insert
Hole I and push-rod hole II, the push rod I are set to position corresponding with the middle part of plastic helical gear, the push rod II be set to
The corresponding position in the marginal portion of plastic helical gear, the push rod I and push rod II circumferentially have several groups.
It further, further include release link, one end of the release link is that may pass through core fixing plate and moving template is stretched
The movable end of contracting, the other end are fixed in ejector pin retaining plate mechanism.
Further, the ejector pin retaining plate mechanism includes ejector pin retaining plate and push plate, and ejector pin retaining plate and push plate are logical
Soket head cap screw is crossed to be fixedly connected.
It further, further include support plate, cushion block and Bottom clamp plate, between the support plate, cushion block and Bottom clamp plate
Form the motion space of ejecting mechanism.
Further, it is provided with the shoulder of segmented in the helical gear cavity block, the shoulder and moving template
There are the fit-up gap of 0,5-1.0mm, the helical gear cavity block and moving template and helical teeth wheel-type between shoulder installation position
Fit-up gap between cavity insert and moving die insert is 1.0-2.0mm.
Further, the bullet apical organ component includes steel ball, spring and interior hexagonal silk plug, the helical teeth wheel-type chamber edge
Several side openings of the inner wall even distribution of block, the side opening are shunk by the hole for being located at helical gear cavity block side, the side opening
Diameter is less than the diameter of steel ball, helical gear cavity block and moving die insert it is unassembled before, steel ball is by the effect of spring, only part
It ejects except side opening, after helical gear cavity block and moving die insert assembly, spring withstands on steel ball in the groove of moving die insert.
The present invention also provides a kind of plastic helical gear release methods of bullet apical organ secondary cavity rotation:
When helical gear cavity block drives rotation by plastic helical gear, under the booster action for playing apical organ component, steel ball edge
Groove on moving die insert roll slide guide；Meanwhile by the drive of plastic helical gear, the segmented shoulder of helical gear cavity block
Part is contacted with the shoulder installation position of moving template, until plastic helical gear is completely pushed out of dynamic model, finally realizes plastic helical gear
Smooth demoulding；
When molding, the external force for acting on ejector pin retaining plate mechanism fails and retracts, and release link reversely pushes kickoff mechanism
For structure back to original position, all components return to original shaping position, start next injection moulding circulation.
The invention has the following beneficial effects:
1. push rod is used in combination with bullet apical organ, help to realize by " reverse " the steady and smooth rotation of helical teeth wheel-type chamber
Plastic helical gear separates abjection with helical teeth wheel-type chamber along axis direction in demoulding, improves the effective of plastic helical gear demoulding
Property.
2. using wide arc gap cooperation and four sections of shapes between helical gear cavity block and moving template mounting hole and moving die insert
The shoulder of formula designs, and under the booster action for playing apical organ, the spinning movement flexibility and reliability of helical gear cavity block reduces molding
The fretting wear of part, compact-sized, perfect in shape and function improve the shaping efficiency of plastic and the service life of mold.
3. the use of apical organ is played, so that having formd between helical gear cavity block and moving template mounting hole and moving die insert
Effect and stable fit-up gap, ensure that helical gear cavity block rigging position precision and its in a mold molding positioning.
Detailed description of the invention
Fig. 1 is the sectional view along A-A of structure chart and Fig. 2 of the invention, and reflection is plastic helical gear injection mold
The dynamic model major part of tool.
Fig. 2 is the top view of Fig. 1, main to reflect helical gear cavity block, moving die insert, type core, type chamber, play apical organ group
Part, guiding mechanism, the corresponding distributing position for releasing the parts such as guiding mechanism, push rod, release link, guide post, soket head cap screw.
Fig. 3 is the helical gear cavity block schematic diagram of structure of the invention.
Fig. 4 is the top view of Fig. 3.
Fig. 5 is the moving die insert schematic diagram of structure of the invention.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is the type core schematic diagram in formed central hole.
Fig. 8 is the top view of Fig. 7.
In figure, 1- support plate；2- soket head cap screw I；3- moving template；3-1, shoulder installation position；3-2 mounting hole；4- helical teeth
Take turns cavity block；The type chamber of 4-1, helical gear cavity block；4-2, helical gear cavity block inner wall；4-3, shoulder；4-4, helical teeth
It takes turns on the outside of cavity block；4-5, hole；4-6, side opening；5- type core；5-1, raised line；6- plastic helical gear；7- steel ball；8- spring；9-
Interior hexagonal silk plug；10- guide post；11- guide sleeve；12- core fixing plate；13- release link；14- moving die insert；14-1, groove；14-
2, on the outside of moving die insert；14-3, band square groove circular mounting hole；14-4, push-rod hole I；14-5, push-rod hole II；15- push rod I；16-
Bottom clamp plate；17- cushion block；18- soket head cap screw II；19- push plate；20- push rod II；21- ejector pin retaining plate；22- ejector guide pillar；
23- push plate guide post.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The present embodiment is used for injecting molding die, and mold is mounted on horizontal injection press.
Structure of the invention is as illustrated in fig. 1 and 2, and the device of the invention is dynamic model in plastic helical gear injecting molding die
Chief component, including mould bases (dynamic model part), helical gear cavity block, moving die insert, type core, bullet apical organ component, release
Mechanism.After injection molding, under the effect of injector die opening mechanism, dynamic model part is retreated along die joint I-I shown in Fig. 1 to set
Position.
By ejector pin retaining plate 21, push plate 19, release link 13, push rod I15, push rod II20, ejector guide pillar 22 and push plate guide post
23 composition ejecting mechanisms, ejector pin retaining plate 21 and push plate 19 pass through four soket head cap screw II18 connections, four groups of ejector guide pillars 22
The targeting part of ejecting mechanism is formed with push plate guide post 23.Ejecting mechanism is formed between support plate 1, cushion block 17 and Bottom clamp plate 16
Motion space.Motion guide equipped with four groups of push plate guide post guide sleeves, for ejecting mechanism；Equipped with four release links, realizes and close
The reset of ejecting mechanism when mould；The ejector pin that Bottom clamp plate center of underside is arranged in provides the power resources of ejecting mechanism.
Moving die insert 14 is mounted on core fixing plate 12, and type core 5 is mounted on moving die insert 14, helical gear cavity block
4 are mounted on moving template 3, and are assembled together with moving die insert 14, the peace of 4-4 and moving template 3 on the outside of helical gear cavity block
Hole 3-2 is filled there are the fit-up gap of 1.0-2.0mm, is stayed between 14-2 on the outside of helical gear cavity block inner wall 4-2 and moving die insert
There is the fit-up gap of 1.0-2.0mm.
There are the dresses of 0,5-1.0mm between the shoulder 4-3 of helical gear cavity block 4 and the shoulder installation position 3-1 of moving template 3
With gap, the shoulder 4-3 of helical gear cavity block 4 is designed to four sections of form (see Fig. 3, Fig. 4), with reduce release when and dynamic model
The contact area of the shoulder installation position 3-1 of plate 3.
It is evenly distributed with aperture 4-5 (at least four) (see Fig. 3, Fig. 4) in the side of helical gear cavity block 4, installation plays apical organ in hole
Component (steel ball 7, spring 8, interior hexagonal silk plug 9), the side opening 4-6 on helical gear cavity block inner wall 4-2 shunk by hole 4-5 and
At, the diameter of side opening 4-6 is less than the diameter for playing the steel ball 7 of apical organ component, so that steel ball 7 is limited within side opening 4-6, helical teeth
Before wheel cavity block 4 and moving die insert 14 are unassembled, steel ball 7 is by the effect of spring 8, and only there are 1/4 part ejections to helical teeth
Except the side opening 4-6 for taking turns cavity block 4.
Corresponding 7 position of steel ball for playing apical organ component is processed into the groove of circular cross-section for one week along outside on moving die insert 14
14-1 (see Fig. 5), helical gear cavity block 4 are assembled together with moving die insert 14, and the spring 8 due to playing apical organ component acts on,
Steel ball 7 is withstood in groove 14-1, be ensure that the rigging position precision of helical gear cavity block 4, is realized helical gear cavity block 4
Molding positioning in a mold.
The centre bore of plastic helical gear 6 realizes the rotation stop between installation axle in the form of with square groove circular hole, it is corresponding at
Type type core 5 accordingly use the cylindrical structure (see Fig. 7, Fig. 8) with raised line 5-1, therefore plastic helical gear 6 demould when with 5, type core
The axially opposed sliding of energy, cannot there is relative rotation between the two.
Type core 5 is assemblied in the band square groove circular mounting hole 14-3 on moving die insert 14, corresponding position on moving die insert 14
Open up two groups 120 ° uniformly distributed push-rod hole I14-4, push-rod hole II14-5 (see Fig. 6).
Ejector pin passes through 16 center of underside hole of Bottom clamp plate and pushes ejecting mechanism work, push rod I15 and push rod II20
When plastic helical gear 6 being pushed to move axially forward, plastic helical gear 6 drives " reverse " rotation of helical gear cavity block 4, thus
Plastic helical gear 6 is pushed out type core 5 and helical gear cavity block 4 along the type chamber 4-1 of helical gear cavity block.
To deform after avoiding plastic helical gear 6 from generating in push, using the stripping means released at a slow speed.
Ejector pin passes through 16 center of underside hole of Bottom clamp plate and pushes ejecting mechanism work, and push rod I15 pushes helical gear
When plastic 6 moves axially forward, since there are 1.0- by the mounting hole 3-2 of 4-4 and moving template 3 on the outside of helical gear cavity block
There are the dresses of 1.0-2.0mm between 14-2 on the outside of the fit-up gap of 2.0mm, helical gear cavity block inner wall 4-2 and moving die insert
With gap, helical gear cavity block 4 drives " reverse " rotation, under the booster action for playing apical organ component, steel by plastic helical gear 6
Pearl 7 rolls slide guide along the groove 14-1 on moving die insert 14, reduces the rotational resistance of helical gear cavity block 4, and rotation is flat
It is steady smooth；Meanwhile by the drive of plastic helical gear 6, the shoulder 4-3 of helical gear cavity block 4 and the shoulder installation position of moving template 3
3-1 contact, since the shoulder 4-3 of helical gear cavity block 4 is designed to four sections of form, to reduce the platform with moving template 3
The contact area of shoulder installation position 3-1, reduces the rotational resistance of helical gear cavity block 4, until plastic helical gear 6 is pushed completely
Dynamic model out, the final smooth demoulding for realizing plastic helical gear 6.
When molding, the launch force of injector fails, and ejector pin is retracted, the die joint effect of stationary mould for mould part
In release link 13, release link 13 reversely pushes ejecting mechanism back to original position.The molding guiding mechanism of mold (is assemblied in by four groups
The guide post 10 of cover half part and the guide sleeve 11 for being assemblied in dynamic model part form) guarantee that the dynamic of mold, cover half part are closed along die joint
Hold together, and locked by injector clamping mechanism, all components return to original shaping position, start next injection moulding circulation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention.It is all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of plastic helical gear stripper apparatus for playing the rotation of apical organ secondary cavity, it is characterised in that: including core fixing plate, move
Template, moving die insert, type core, plays apical organ component, ejecting mechanism at helical gear cavity block, and moving die insert is mounted on type core and fixes
On plate, type core is mounted on moving die insert, and helical gear cavity block is mounted on moving template, and is assemblied in one with moving die insert
It rises, there are fit-up gap between helical gear cavity block and moving template and between helical gear cavity block and moving die insert,
The ejecting mechanism is used to carry out plastic helical gear ejection, and the side of the helical gear cavity block is equipped with several holes, hole
Interior installation plays apical organ component, and the corresponding position for playing apical organ component is fluted along outside processing in one week on the moving die insert, described
It plays apical organ component and groove cooperation realizes that the molding of helical gear cavity block in a mold positions, the plastic helical gear is equipped with
Centre bore, the centre bore are the circular hole with square groove, and type core is the cylinder with raised line, and the circular hole and cylindrical fit make helical gear
Plastic can only slide axially and relatively unrotatable with respect to type core, when ejecting mechanism pushes plastic helical gear to be axially moveable
When, under the booster action for playing apical organ component, the plastic helical gear drives the rotation of helical gear cavity block, so that helical gear is moulded
Part is pushed out type core and helical gear cavity block along the type chamber of helical gear cavity block.
2. a kind of plastic helical gear stripper apparatus for playing the rotation of apical organ secondary cavity according to claim 1, feature exist
In: the ejecting mechanism includes ejector pin retaining plate mechanism, push rod, ejector guide pillar, push plate guide post, and one end of the push rod is fixed on
In ejector pin retaining plate mechanism, the other end is used for ejection plastic helical gear, and the ejector guide pillar is fixedly installed on ejector pin retaining plate machine
On structure, one end of the push plate guide post is fixed, and the other end is slidably disposed in ejector guide pillar.
3. a kind of plastic helical gear stripper apparatus for playing the rotation of apical organ secondary cavity according to claim 2, feature exist
In: the push rod includes push rod I and push rod II, and corresponding position offers push-rod hole I and push-rod hole II, institute on the moving die insert
It states push rod I and is set to position corresponding with the middle part of plastic helical gear, the push rod II is set to the edge with plastic helical gear
The corresponding position in part, the push rod I and push rod II circumferentially have several groups.
4. a kind of plastic helical gear stripper apparatus for playing the rotation of apical organ secondary cavity according to claim 2, feature exist
In: it further include release link, one end of the release link is the movable end that may pass through core fixing plate and moving template, and the other end is fixed
In in ejector pin retaining plate mechanism.
5. a kind of plastic helical gear stripper apparatus for playing the rotation of apical organ secondary cavity according to claim 2, feature exist
In: the ejector pin retaining plate mechanism includes ejector pin retaining plate and push plate, and ejector pin retaining plate and push plate are fixed by soket head cap screw
Connection.
6. a kind of plastic helical gear stripper apparatus for playing the rotation of apical organ secondary cavity according to claim 2, feature exist
In: further include support plate, cushion block and Bottom clamp plate, forms the dynamic of ejecting mechanism between the support plate, cushion block and Bottom clamp plate
Make space.
7. a kind of plastic helical gear stripper apparatus for playing the rotation of apical organ secondary cavity according to claim 1, feature exist
In: it is provided with the shoulder of segmented in the helical gear cavity block, is stayed between the shoulder and the shoulder installation position of moving template
There are the fit-up gap of 0,5-1.0mm, the helical gear cavity block and moving template and helical gear cavity block and moving die insert
Between fit-up gap be 1.0-2.0mm.
8. a kind of plastic helical gear stripper apparatus for playing the rotation of apical organ secondary cavity according to claim 1, feature exist
In: the bullet apical organ component includes steel ball, spring and interior hexagonal silk plug, and the inner wall even distribution of the helical gear cavity block is several
Side opening, the side opening are shunk by the hole for being located at helical gear cavity block side, and the diameter of the side opening is less than the straight of steel ball
Diameter, helical gear cavity block and moving die insert it is unassembled before, steel ball is by the effect of spring, and only part ejection is to except side opening,
After helical gear cavity block and moving die insert assembly, spring withstands on steel ball in the groove of moving die insert.
9. a kind of plastic helical gear release method for playing the rotation of apical organ secondary cavity, it is characterised in that:
When helical gear cavity block drives rotation by plastic helical gear, under the booster action for playing apical organ component, steel ball is along dynamic
Groove in mould insert rolls slide guide；Meanwhile by the drive of plastic helical gear, the segmented shoulder portion of helical gear cavity block
It is contacted with the shoulder installation position of moving template, until plastic helical gear is completely pushed out of dynamic model, it is final to realize the suitable of plastic helical gear
Benefit demoulding；
When molding, the external force for acting on ejector pin retaining plate mechanism fails and retracts, and release link reversely pushes ejecting mechanism to return
Original position is returned to, all components return to original shaping position, start next injection moulding circulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910719763.4A CN110394952B (en) | 2019-08-06 | 2019-08-06 | Helical gear plastic part demoulding device and method for assisting cavity rotation of ejection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910719763.4A CN110394952B (en) | 2019-08-06 | 2019-08-06 | Helical gear plastic part demoulding device and method for assisting cavity rotation of ejection device |
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| CN110394952A true CN110394952A (en) | 2019-11-01 |
| CN110394952B CN110394952B (en) | 2021-03-19 |
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Cited By (1)
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| CN113524596A (en) * | 2021-07-07 | 2021-10-22 | 宁波双林模具有限公司 | High-precision large-helix-angle planetary helical gear demolding structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524596A (en) * | 2021-07-07 | 2021-10-22 | 宁波双林模具有限公司 | High-precision large-helix-angle planetary helical gear demolding structure |
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| CN110394952B (en) | 2021-03-19 |
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