CN102615791A - Variable-force double-guide-slot side core pulling mechanism - Google Patents

Variable-force double-guide-slot side core pulling mechanism Download PDF

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Publication number
CN102615791A
CN102615791A CN2012100826987A CN201210082698A CN102615791A CN 102615791 A CN102615791 A CN 102615791A CN 2012100826987 A CN2012100826987 A CN 2012100826987A CN 201210082698 A CN201210082698 A CN 201210082698A CN 102615791 A CN102615791 A CN 102615791A
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CN
China
Prior art keywords
core
force
guide groove
core pulling
guide
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012100826987A
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Chinese (zh)
Inventor
张红兵
张永康
杜建红
张义平
陆春元
陈祥林
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Suzhou Vocational University
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Suzhou Vocational University
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Publication date
Application filed by Suzhou Vocational University filed Critical Suzhou Vocational University
Priority to CN2012100826987A priority Critical patent/CN102615791A/en
Publication of CN102615791A publication Critical patent/CN102615791A/en
Pending legal-status Critical Current

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Abstract

The invention belongs to the technical field of a core pulling mechanism and provides a variable-force double-guide-slot side core pulling mechanism. Whether die sinking or die assembly is carried out, a dialing force arm is larger than a core pushing force arm all the time so as to obtain greater core pulling force or core pushing force; in a die sinking process, the dialing force arm is gradually increased along with the increase of the die sinking process, and the core pulling force is gradually increased; in a die assembly process, the dialing force arm is gradually reduced along with the increase of the die assembly process, and the core pushing force is gradually reduced; and the change of the core pulling force and the core pushing force more accords with mechanical requirements of the die sinking process or the die assembly process. The side core pulling mechanism provided by the invention has the advantages of simple structure, easiness for machining and assembling and low manufacturing cost, is suitable for front-side or large-angle inclined-side automatic core pulling, and has strong commonality and high production efficiency. The variable-force double-guide-slot side core pulling mechanism also has the advantages of good molding quality, high product precision, clean product appearance and no core pulling tracks, and has stronger popularization and application values.

Description

The two guide groove side core-drawing mechanisms of a kind of variable force
Technical field
The invention belongs to the core-pulling mechanism technical field, relate in particular to the two guide groove side core-drawing mechanisms of a kind of variable force.
Background technology
Some products are bottom surface or end face is porose or profile not only, and the side also maybe porose or profile.When making mould, also will there be the type heart side, so that when the injection material, can form hole or profile, when die sinking, will earlier the type heart of side be taken out out, so that the product that forms is thrown off in push rod or push pedal.
At present, in order to realize the power of loosing core more greatly, large-angle inclined side core-pulling, often adopt the pinion and-rack side core-drawing mechanism on the mould of plastics.The pinion and-rack side core-drawing mechanism is made up of driving rack, gear, tooth bar core; Driving rack is on the face of cylinder of lead, to be processed with tooth bar; Be installed between top clamping plate and the solid plate, and through the spline finger setting, driving rack cooperates with solid plate and moving platen through the face of cylinder; Roller gear is fixed on the moving platen through straight pin, and can freely rotate around straight pin, gear and driving rack engagement; The tooth bar core is installed on the moving platen, and can slide along installing hole, and its left side is the core of moulding plastics sidewise hole, the engagement of right side rack and pinion.During die sinking; Part stationary such as top clamping plate, solid plate, driving rack are motionless, and working of plastics, moving platen and top fixing parts thereof move down, and gear rotates under the drive of driving rack; The side direction slip under the drive of gear again of tooth bar core realizes the process of loosing core.This structure is owing to there are parts such as spline pin, gear, tooth bar, complex structure, and required precision is high, is difficult for processing, and manufacturing cost is high, the assembling difficulty, a mould list usefulness, versatility are not strong, and the power of loosing core immobilizes
Summary of the invention
The invention provides the two guide groove side core-drawing mechanisms of a kind of variable force; Be intended to solve the pinion and-rack side core-drawing mechanism that prior art provides, complex structure, be difficult for because of required precision is high that processing, manufacturing cost are high, assembling difficulty, a mould list with, versatility not by force, the changeless problem of the power of loosing core.
The object of the present invention is to provide the two guide groove side core-drawing mechanisms of a kind of variable force, said side core-drawing mechanism comprises: top clamping plate, solid plate, moving platen, punch, working of plastics, side core, straight pin, two guide groove fork, roller pin, guide finger;
Said top clamping plate is installed in the top of said solid plate; The bottom of said solid plate is provided with said moving platen, and the set inside of said moving platen has said punch, and said working of plastics is installed on the said punch; Said working of plastics is connected with an end of said side core; The other end of said side core is installed in the lower end of said pair of guide groove fork through said straight pin, and said pair of guide groove fork is installed on the said moving platen through said roller pin, and said solid plate is provided with said guide finger.
Further, said side core-drawing mechanism comprises the stopping means that is made up of spring, support bar, spacing ball;
Said spring housing is contained on the said support bar, and an end of said support bar is installed on the said moving platen, and said spacing ball contacts with said spring, and said spacing ball is fixed on an end of said support bar.
Further, the spacing ball in the said stopping means is fastened in the groove that is provided with on the said side core.
Further, said working of plastics is provided with the sidewise hole that said side core is installed.
Further, the lower end of said pair of guide groove fork is provided with down gathering sill, and said gathering sill down matches with said straight pin.
Further, the upper end of said pair of guide groove fork is provided with gathering sill, and the said gathering sill of going up matches with said guide finger.
No matter the two guide groove side core-drawing mechanisms of variable force provided by the invention are die sinking or matched moulds, and the power arm of force of stirring can obtain the bigger power of loosing core or push away core power all the time greater than pushing away the core power arm of force; In the die sinking process, stir the power arm of force and strengthen gradually along with the increase of opening stroke, it is big that the power of loosing core also becomes gradually; In the matched moulds process, stir the power arm of force and reduce gradually, push away core power and also diminish gradually along with the increase of mould-closing stroke; This variation that loose core power, pushes away core power meets the mechanics requirement of folding mould more, and this side core-drawing mechanism is simple in structure, process and assemble is easy, low cost of manufacture; Be applicable to positive side or large-angle inclined side automatic core-pulling, highly versatile, production efficiency is high; Forming Quality is good, the product precision high, product appearance neatly, is not loosed core vestige, has stronger popularization and using value.
Description of drawings
Structural representation when Fig. 1 is the two guide groove side core-drawing mechanism matched moulds state of the variable force that provides of the embodiment of the invention;
Structural representation when Fig. 2 is the two guide groove side core-drawing mechanism die opening state of the variable force that provides of the embodiment of the invention.
Among the figure: 1, top clamping plate; 2, working of plastics; 3, solid plate; 4, two guide groove forks; 5, guide finger; 6, roller pin; 7, moving platen; 8, side core; 9, straight pin; 10, stopping means; 11, punch.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further specified below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in the qualification invention.
Fig. 1 and Fig. 2 show the structure of the two guide groove side core-drawing mechanisms of variable force that the embodiment of the invention provides.For the ease of explanation, only show the part relevant with the present invention.
This side core-drawing mechanism comprises: top clamping plate 1, solid plate 3, moving platen 7, punch 11, working of plastics 2, side core 8, straight pin 9, two guide groove fork 4, roller pin 6, guide finger 5;
Top clamping plate 1 is installed in the top of solid plate 3; The bottom of solid plate 3 is provided with moving platen 7, and the set inside of moving platen 7 has punch 11, and working of plastics 2 is installed on the punch 11; Working of plastics 2 is connected with an end of side core 8; The other end of side core 8 is installed in the lower end of two guide groove forks 4 through straight pin 9, and two guide groove forks 4 are installed on the moving platen 7 through roller pin 6, and solid plate 3 is provided with guide finger 5.
In embodiments of the present invention, this side core-drawing mechanism comprises the stopping means 10 that is made up of spring, support bar, spacing ball;
Spring housing is contained on the support bar, and an end of support bar is installed on the moving platen 7, and spacing ball contacts with spring, and spacing ball is fixed on an end of support bar.
In embodiments of the present invention, the spacing ball in the stopping means 10 is fastened in the groove that is provided with on the side core 8.
In embodiments of the present invention, working of plastics 2 is provided with the sidewise hole of installation side core 8.
In embodiments of the present invention, the lower end of two guide groove forks 4 is provided with down gathering sill, and following gathering sill matches with straight pin 9.
In embodiments of the present invention, the upper end of two guide groove forks 4 is provided with gathering sill, and last gathering sill matches with guide finger 5.
Below in conjunction with accompanying drawing and specific embodiment application principle of the present invention is further described.
Like Fig. 1 and shown in Figure 2, the two guide groove side core-drawing mechanisms of this variable force comprise: top clamping plate 1, working of plastics 2, solid plate 3, two guide groove fork 4, guide finger 5, roller pin 6, moving platen 7, side core 8, straight pin 9, stopping means 10;
Roller pin 6 is fixed on the moving platen 7, and two guide groove forks 4 are around roller pin 6 swings; Guide finger 5 is fixed on the solid plate 3, and guide finger 5 cooperates with the last gathering sill of two guide groove forks 4, and guide finger 5 can slide along the last gathering sill of two guide groove forks 4; Straight pin 9 is fixed on the side core 8, and straight pin 9 cooperates with the following gathering sill of two guide groove forks 4, and straight pin 9 can slide along the following gathering sill of two guide groove forks 4; Side core 8 is installed on the moving platen 7, and side core 8 can be along the axis lateral sliding; Side core 8 is provided with groove, and matched moulds and the opening stroke to side core 8 under spring action of the spacing ball in the stopping means 10 carries out spacing.
The two guide groove side core-drawing mechanisms of this variable force are by the matched moulds status transition during to die opening state; Top clamping plate 1, solid plate 3, guide finger 5 transfixions; Parts such as moving platen 7 and top fixing two guide groove forks 4 thereof, roller pin 6, side core 8, straight pin 9 move down, and working of plastics 2 moves down with moving platen 7 under the package power effect; Simultaneously, the last gathering sill of two guide groove forks 4 slides along guide finger 5, and 5 pairs of two guide groove forks 4 of guide finger produce stirs power, makes two guide groove forks 4 around roller pin 6 counter-clockwise swings; The power of stirring is under two guide groove fork 4 leverages, and 4 pairs of straight pins of two guide groove forks 9 produce the reverse core power that pushes away, and push away core power and through straight pin 9 side core 8 are slided laterally, realizes automatic side core-pulling action.
When the two guide groove side core-drawing mechanisms of this variable force carry out the transition to the matched moulds state by die opening state; The last gathering sill opening of two guide groove forks 4 and guide finger 5 are on same vertical line; Along with moving platen 7 moves up, 5 pairs of two guide groove forks 4 of guide finger produce the reverse power of stirring, and two guide groove forks 4 produce direction through 9 pairs of side cores of straight pin 8 and push away core power; Side core 8 is slided to the inside, realize automatically reseting action.
The relation that pushes away core power and stir between the power is as follows:
FC = L b L c × Fb
Wherein, Lb---stir the power arm of force, i.e. the centre-to-centre spacing of guide finger 5 and roller pin 6;
Lc---push away the core power arm of force, i.e. the centre-to-centre spacing of roller pin 6 and straight pin 9.
Top clamping plate 1, solid plate 3, guide finger 5 transfixions in the two guide groove side core-drawing mechanisms of this variable force; Parts such as moving platen 7 and top fixing two guide groove forks 4 thereof, roller pin 6, side core 8, straight pin 9 move down, and working of plastics 2 moves down with moving platen 7 under the package power effect; Simultaneously, the last gathering sill of two guide groove forks 4 slides along guide finger 5, and 5 pairs of two guide groove forks 4 of guide finger produce stirs power, makes two guide groove forks 4 around roller pin 6 counter-clockwise swings; The power of stirring is under two guide groove fork 4 leverages; 4 pairs of straight pins of two guide groove forks 9 produce the core power that pushes away of amplifying; Pushing away core power slides side core 8 through straight pin 9 laterally; Realize the action of automatic side core-pulling, realized becoming the power of loosing core, positive side or large-angle inclined side core-pulling, solved pinion and-rack side core-drawing mechanism complex structure, be difficult for processing, manufacturing cost is high, assembling difficulty, a mould list with, versatility not by force, the changeless deficiency of the power of loosing core.
No matter the two guide groove side core-drawing mechanisms of this variable force are die sinking or matched moulds, stir power arm of force Lb all the time greater than pushing away core power arm of force Lc, therefore can obtain the bigger power of loosing core or push away core power; In the die sinking process, stir power arm of force Lb and strengthen gradually along with the increase of opening stroke, it is big that the power of loosing core also becomes gradually; In the matched moulds process; Lb pushes away core power and also diminishes gradually along with the increase of mould-closing stroke reduces gradually, and the power of loosing core, this variation that pushes away core power meet the mechanics requirement of folding mould more; Simple in structure, process and assemble is easy, low cost of manufacture; The present invention is applicable to positive side or large-angle inclined side automatic core-pulling, highly versatile, and production efficiency is high; Forming Quality is good, the product precision high, product appearance neatly, is not loosed core vestige.
No matter the two guide groove side core-drawing mechanisms of the variable force that the embodiment of the invention provides are die sinking or matched moulds, and the power arm of force of stirring can obtain the bigger power of loosing core or push away core power all the time greater than pushing away the core power arm of force; In the die sinking process, stir the power arm of force and strengthen gradually along with the increase of opening stroke, it is big that the power of loosing core also becomes gradually; In the matched moulds process, stir the power arm of force and reduce gradually, push away core power and also diminish gradually along with the increase of mould-closing stroke; This variation that loose core power, pushes away core power meets the mechanics requirement of folding mould more, and this side core-drawing mechanism is simple in structure, process and assemble is easy, low cost of manufacture; Be applicable to positive side or large-angle inclined side automatic core-pulling, highly versatile, production efficiency is high; Forming Quality is good, the product precision high, product appearance neatly, is not loosed core vestige, has stronger popularization and using value.
More than be merely preferred embodiment of the present invention,, all any modifications of within spirit of the present invention and principle, being done, be equal to and replace and improvement etc., all should be included within protection scope of the present invention not in order to restriction the present invention.

Claims (6)

1. the two guide groove side core-drawing mechanisms of variable force is characterized in that said side core-drawing mechanism comprises: top clamping plate, solid plate, moving platen, punch, working of plastics, side core, straight pin, two guide groove fork, roller pin, guide finger;
Said top clamping plate is installed in the top of said solid plate; The bottom of said solid plate is provided with said moving platen, and the set inside of said moving platen has said punch, and said working of plastics is installed on the said punch; Said working of plastics is connected with an end of said side core; The other end of said side core is installed in the lower end of said pair of guide groove fork through said straight pin, and said pair of guide groove fork is installed on the said moving platen through said roller pin, and said solid plate is provided with said guide finger.
2. side core-drawing mechanism as claimed in claim 1 is characterized in that said side core-drawing mechanism also comprises the stopping means that is made up of spring, support bar, spacing ball;
Said spring housing is contained on the said support bar, and an end of said support bar is installed on the said moving platen, and said spacing ball contacts with said spring, and said spacing ball is fixed on an end of said support bar.
3. according to claim 1 or claim 2 side core-drawing mechanism is characterized in that the spacing ball in the said stopping means is fastened in the groove that is provided with on the said side core.
4. side core-drawing mechanism as claimed in claim 1 is characterized in that, said working of plastics is provided with the sidewise hole that said side core is installed.
5. side core-drawing mechanism as claimed in claim 1 is characterized in that the lower end of said pair of guide groove fork is provided with down gathering sill, and said gathering sill down matches with said straight pin.
6. like claim 1 or 5 described side core-drawing mechanisms, it is characterized in that the upper end of said pair of guide groove fork is provided with gathering sill, the said gathering sill of going up matches with said guide finger.
CN2012100826987A 2012-03-27 2012-03-27 Variable-force double-guide-slot side core pulling mechanism Pending CN102615791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012100826987A CN102615791A (en) 2012-03-27 2012-03-27 Variable-force double-guide-slot side core pulling mechanism

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Application Number Priority Date Filing Date Title
CN2012100826987A CN102615791A (en) 2012-03-27 2012-03-27 Variable-force double-guide-slot side core pulling mechanism

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103934979A (en) * 2014-03-12 2014-07-23 宁波如强模塑有限公司 Injection mold straight ejection swing upending core-pulling demolding device
CN104441496A (en) * 2014-11-19 2015-03-25 苏州经贸职业技术学院 Mold inclined parting and core-pulling device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2866098Y (en) * 2005-10-28 2007-02-07 重庆工学院 Automatic lateral core-extracting mechanism
US20070172539A1 (en) * 2006-01-24 2007-07-26 Chiang-Chang Wang Core-pulling mechanism and injection mold with the same
US20080276744A1 (en) * 2007-05-10 2008-11-13 Chih-Yu Chen Side core-pulling mechanism of mold
CN102078952A (en) * 2009-11-27 2011-06-01 牟维军 Inner core-pulling die mechanism with bent pin
CN202623182U (en) * 2012-03-27 2012-12-26 苏州市职业大学 Force-changeable double-guiding-groove lateral core pulling mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2866098Y (en) * 2005-10-28 2007-02-07 重庆工学院 Automatic lateral core-extracting mechanism
US20070172539A1 (en) * 2006-01-24 2007-07-26 Chiang-Chang Wang Core-pulling mechanism and injection mold with the same
US20080276744A1 (en) * 2007-05-10 2008-11-13 Chih-Yu Chen Side core-pulling mechanism of mold
CN102078952A (en) * 2009-11-27 2011-06-01 牟维军 Inner core-pulling die mechanism with bent pin
CN202623182U (en) * 2012-03-27 2012-12-26 苏州市职业大学 Force-changeable double-guiding-groove lateral core pulling mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103934979A (en) * 2014-03-12 2014-07-23 宁波如强模塑有限公司 Injection mold straight ejection swing upending core-pulling demolding device
CN103934979B (en) * 2014-03-12 2016-05-11 宁波如强模塑有限公司 Injection mold directly pushes up and swings the back-off stripper apparatus of loosing core
CN104441496A (en) * 2014-11-19 2015-03-25 苏州经贸职业技术学院 Mold inclined parting and core-pulling device

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Application publication date: 20120801

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