CN105984085A - Core-pulling self-locking mechanism of injection mold - Google Patents

Core-pulling self-locking mechanism of injection mold Download PDF

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Publication number
CN105984085A
CN105984085A CN201510051549.8A CN201510051549A CN105984085A CN 105984085 A CN105984085 A CN 105984085A CN 201510051549 A CN201510051549 A CN 201510051549A CN 105984085 A CN105984085 A CN 105984085A
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China
Prior art keywords
groove
block
little wedge
loosing core
core
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Granted
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CN201510051549.8A
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Chinese (zh)
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CN105984085B (en
Inventor
邬荣武
裴东良
李国发
章垚统
任远耀
张学军
潘海东
陈云
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Ningbo Xing Li Automobile Die Co Ltd
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Ningbo Xing Li Automobile Die Co Ltd
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Priority to CN201510051549.8A priority Critical patent/CN105984085B/en
Publication of CN105984085A publication Critical patent/CN105984085A/en
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Abstract

The invention relates to a core-pulling self-locking mechanism of an injection mold. The core-pulling self-locking mechanism comprises a wedging block, a small wedge block, a core-pulling block and a driving unit, and is characterized in that the driving unit drives the small wedge block to do linear reciprocating motion; a through hole is formed in the wedging block; a positioning block is arranged in the through hole and capable of sliding along the inner wall of the through hole; a first groove is formed in the small wedge block; a pressing strip is arranged on each of the two sides of the wedging block; second grooves are formed in the pressing strips; the core-pulling block is arranged below the wedging block; a third groove is formed in the core-pulling block; and the wedging block is embedded into the third groove. According to the core-pulling self-locking mechanism provided by the invention, the occupied space and cost of the mechanism are not increased; the small wedge block and the core-pulling block are arranged to form a certain included angle, so requirements for core pulling and self-locking can be met; and the requirements of the mechanism on an oil cylinder and machining precision are not high, the structure of the mechanism is simple, reliable, compact and durable, and the movement time is not wasted in a production process.

Description

The self-locking mechanism of loosing core of injection mold
Technical field
The present invention relates to injection mold, especially relate to the self-locking mechanism of loosing core of a kind of injection mold.
Background technology
When loosing core with oil cylinder locking large area product face, acting on the injection pressure locking pressure commonly greater than oil cylinder in the face of loosing core, thus cause and loose core yielding and the section of generation difference or burr, in order to solve this problem, prior art mainly uses following scheme:
Increase by one oil cylinder drive in scheme 1. side is carved tight block and is loosed core to pin this;
Scheme 2. oil cylinder self-locking oil cylinder;
Scheme 3. installs the oil cylinder of sufficiently large cylinder diameter in the case of locus allows;
Scheme 4. increases latching valve at the oil-in of existing oil cylinder.
Above four kinds of schemes are respectively provided with following shortcoming:
Scheme 1 additionally increases an oil cylinder and had both increased cost, harsher to die space status requirement, adds again processing cost, mould strength additionally also produces certain impact, also has hyperpraxia in producing to extend manufacture cycle;
Scheme 2 self-locking oil cylinder, although do not affected by other aspects, but the price of self-locking oil cylinder is 5 to 10 times of general oil cylinder price, the most to increase bigger cost;
Scheme 3 installs the oil cylinder of sufficiently large cylinder diameter in the case of locus allows, on the one hand, occupy the substantial amounts of locus of mould, and solution problem to be solved of can not being sure about completely, on the other hand, the oil cylinder price that cylinder diameter is the biggest is the highest, and the piston seal performance of oil cylinder being required, meeting is the highest;
Scheme 4 increases latching valve at the oil-in of existing oil cylinder, requires the highest to the piston seal performance of oil cylinder, and the service life of latching valve is the longest simultaneously, and further, the price of the oil cylinder that high leakproofness requires is the highest.
Summary of the invention
For with present on problem, and in view of under cost in die industry and the vital overall situation of quality, the present invention provides following solution:
A kind of self-locking mechanism of loosing core of injection mold, including carving tight block, little wedge, loose core block and driver element, described driver element drives little wedge to do the reciprocating motion of straight line, described carving is provided with through hole on tight block, it is provided with locating piece in described through hole, described locating piece can slide along the inwall of described through hole, it is provided with the first groove in described little wedge, described first groove locating piece in spacing described through hole, the described both sides carving tight block are each provided with a press strip, the second groove it is provided with on described press strip, described second groove locating piece in spacing described through hole, the described lower section carving tight block is provided with block of loosing core, it is provided with the 3rd groove on described block of loosing core, described carve tight block buckle in described 3rd groove, carve tight block described in and and along described 3rd groove, relative slip can occur with described block of loosing core.
Further, described in loose core and be provided with the 4th groove on block, the leading section of described little wedge embed described in carve the inside of tight block and be placed in described 4th groove, can slide in described 4th groove in the leading section of described little wedge.
Further, the forward end lower surface of described little wedge for carving tight face, described in carve tight face and described block of loosing core the upper surface of the 4th groove there is certain angle.
Further, the angle of the upper surface carving the 4th groove of tight face and described block of loosing core described in is preferably 5 degree.
Further, the two ends of described locating piece are flat-top inclined-plane.
Further, the leading section of described little wedge be completely disposed at described in loose core block the 4th groove in time, the air line distance between the first groove and second groove of described press strip of described little wedge is 58 mm.
Further, described driver element is oil cylinder, and described oil cylinder is provided with pull bar, and described oil cylinder is connected with described little wedge by described pull bar.
A kind of die sinking method of the self-locking mechanism of loosing core of injection mold, the starting stage of die sinking, carving described in the leading section embedding of described little wedge in the 4th groove of block of loosing core described in being placed on inside tight block, the locating piece in described through hole is limited in the second groove of described press strip;The most described driver element drives little wedge to move forward 58 mm along straight reciprocating motion stroke, the position of the most described second groove, described locating piece and described first groove three is exactly in approximately the same plane, and described locating piece is slipped in the first groove of described little wedge to medial movement 2.5 mm by spacing described second groove;Continue to be driven described little wedge rearward movement by described driver element, owing to the locating piece in through hole described during this is limited in the first groove of described little wedge, so carving the motion of tight block described in described little wedge motion also drive, the block the 3rd groove along described block of loosing core of loosing core described in extruding is the most also moved upward by the described motion carving tight block, described driver element drives described little wedge and carves tight block and move forward 80 mm, block of loosing core described in now moves up 22.3 mm so that product completely disengages from mould.
The closing method of the self-locking mechanism of loosing core of a kind of injection mold, the starting stage of matched moulds, the locating piece in described through hole is limited in the first groove of described little wedge;Described driver element drives described little wedge to travel forward, owing to the locating piece in the most described through hole is limited in the first groove of described little wedge, so carving the motion of tight block described in described little wedge motion also drive, the block the 3rd groove along described block of loosing core of loosing core described in extruding is the most also moved downward by the described motion carving tight block, described driver element drives described little wedge and carves tight block and be moved rearwards by 80 mm, block of loosing core described in now moves down 22.3 mm, the most described first groove, the position of described locating piece and described second groove three is exactly in approximately the same plane, described locating piece is moved in the second groove that 2.5mm slips into described press strip laterally by the first groove of spacing described little wedge;Continue to be driven described little wedge to travel forward by described driver element, owing to locating piece described during this is not limited in the first groove of described little wedge, so the motion of the most described little wedge will not drive described in carve tight block and move, described driver element drives little wedge to move forward 58 mm along straight reciprocating motion stroke, make described little wedge leading section embed carve be placed on inside tight block described in loose core block the 4th groove in, owing to the upper surface of the 4th groove carving tight face and described block of loosing core of described little wedge exists angle, make to carve block of loosing core described in the pinning of tight face, so that loose core, block is not subjected to displacement under injection state.
The present invention provides the self-locking mechanism of loosing core of a kind of injection mold, described mechanism is not required to additionally increase spatial dimension and cost, by arranging described little wedge and described block of loosing core exists certain angle and can be achieved with loosing core the requirement of self-locking, this kind of mechanism is less demanding to oil cylinder and machining accuracy, simple in construction, reliable, compact, durable, and the most do not waste the time of athletic performance.
Accompanying drawing explanation
Fig. 1 is the exploded perspective view of the present invention.
Fig. 2 is the front view after the mould matched moulds of the present invention.
Fig. 3 is the top view after the mould matched moulds of the present invention.
The sequence number marked in figure is represented sequentially as: A. carves tight face;1. carve tight block;The least wedge;3. pull bar;4. oil cylinder;5. locating piece;6. through hole;7. the first groove;8. loose core block;9. the 3rd groove;10. the 4th groove;11. press strips;12. second grooves.
Detailed description of the invention
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings.
nullA kind of self-locking mechanism of loosing core of injection mold,Including carving tight block 1、Little wedge 2、Loose core block 8 and driver element,Described driver element drives little wedge 2 to do the reciprocating motion of straight line,Described carving is provided with through hole 6 on tight block 1,It is provided with locating piece 5 in described through hole 6,Described locating piece 5 can slide along the inwall of described through hole 6,The first groove 7 it is provided with in described little wedge 2,Described first groove 7 locating piece 5 in spacing described through hole 6,The described both sides carving tight block 1 are each provided with a press strip 11,The second groove 12 it is provided with on described press strip 11,Described second groove 12 locating piece 5 in spacing described through hole 6,The described lower section carving tight block 1 is provided with block 8 of loosing core,It is provided with the 3rd groove 9 on described block 8 of loosing core,Described carve tight block 1 buckle in described 3rd groove 9,Carve tight block 1 described in and and along described 3rd groove 9, relative slip can occur with described block 8 of loosing core.
Further, described in loose core and be provided with the 4th groove 10 on block 8, the leading section of described little wedge 2 embed described in carve the inside of tight block 1 and be placed in described 4th groove 10, can slide in described 4th groove 10 in the leading section of described little wedge 2.
Further, the forward end lower surface of described little wedge 2 for carving tight face A, described in carve tight face A and described block 8 of loosing core the upper surface of the 4th groove 10 there is certain angle.
Further, the angle of the upper surface carving the 4th groove 10 of tight face A and described block 8 of loosing core described in is preferably 5 degree.
Further, the two ends of described locating piece 5 are flat-top inclined-plane.
Further, the leading section of described little wedge 2 be completely disposed at described in loose core block 8 the 4th groove 10 in time, the air line distance between the first groove 7 and second groove 12 of described press strip 11 of described little wedge 2 is 58 mm.
Further, described driver element is oil cylinder 4, and described oil cylinder 4 is provided with pull bar 3, and described oil cylinder 4 is connected with described little wedge 2 by described pull bar 3.
A kind of die sinking method of the self-locking mechanism of loosing core of injection mold, the starting stage of die sinking, carving described in the leading section embedding of described little wedge 2 in the 4th groove 10 of block 8 of loosing core described in being placed on inside tight block 1, the locating piece 5 in described through hole 6 is limited in the second groove 12 of described press strip 11;The most described driver element drives little wedge 2 to move forward 58 mm along straight reciprocating motion stroke, the position of the most described second groove 12, described locating piece 5 and described first groove 7 three is exactly in approximately the same plane, and described locating piece 5 is slipped into medial movement 2.5 mm by spacing described second groove 12 in first groove 12 of described little wedge 2;Continue to be driven described little wedge 2 rearward movement by described driver element, owing to the locating piece 5 in through hole 6 described during this is limited in the first groove 7 of described little wedge 2, so described little wedge 2 move also drive described in carve tight block 1 and move, the block 8 the 3rd groove 9 along described block 8 of loosing core of loosing core described in extruding is the most also moved upward by the described motion carving tight block 2, described driver element drives described little wedge 2 and carves tight block 1 and move forward 80 mm, block 8 of loosing core described in now moves up 22.3 mm so that product completely disengages from mould.
The closing method of the self-locking mechanism of loosing core of a kind of injection mold, the starting stage of matched moulds, the locating piece 5 in described through hole 6 is limited in the first groove 7 of described little wedge 2;Described driver element drives described little wedge 2 to travel forward, owing to the locating piece 5 in the most described through hole 6 is limited in the first groove 7 of described little wedge 2, so described little wedge 2 move also drive described in carve tight block 1 and move, the block 8 the 3rd groove 9 along described block 8 of loosing core of loosing core described in extruding is the most also moved downward by the described motion carving tight block 1, described driver element drives described little wedge 2 and carves tight block 1 and be moved rearwards by 80 mm, block 8 of loosing core described in now moves down 22.3 mm, the most described first groove 7, the position of described locating piece 5 and described second groove 12 three is exactly in approximately the same plane, described locating piece 5 is moved in the second groove 12 that 2.5mm slips into described press strip 11 laterally by the first groove 7 of spacing described little wedge 2;Continue to be driven described little wedge 2 to travel forward by described driver element, owing to locating piece 5 described during this is not limited in the first groove 7 of described little wedge 2, so the motion of the most described little wedge 2 will not drive described in carve tight block 1 and move, described driver element drives little wedge 2 to move forward 58 mm along straight reciprocating motion stroke, the leading section making described little wedge 2 embed described in carve that tight block 1 is internal and be placed on described in loose core block 8 the 4th groove 10 in, owing to the upper surface of the 4th groove 10 carving tight face A and described block 8 of loosing core of described little wedge 2 exists angle, make to carve block 8 of loosing core described in tight face A pinning, so that loose core, block 8 is not subjected to displacement under injection state.
Above-mentioned detailed description of the invention is used for illustrating the present invention; it is only the preferred embodiments of the present invention; rather than limit the invention; in the protection domain of spirit and claims of the present invention; the any modification, equivalent substitution and improvement etc. making the present invention, both fall within protection scope of the present invention.

Claims (9)

  1. null1. the self-locking mechanism of loosing core of an injection mold,Including carving tight block、Little wedge、Loose core block and driver element,It is characterized in that,Described driver element drives little wedge to do the reciprocating motion of straight line,Described carving is provided with through hole on tight block,It is provided with locating piece in described through hole,Described locating piece can slide along the inwall of described through hole,It is provided with the first groove in described little wedge,Described first groove locating piece in spacing described through hole,The described both sides carving tight block are each provided with a press strip,The second groove it is provided with on described press strip,Described second groove locating piece in spacing described through hole,The described lower section carving tight block is provided with block of loosing core,It is provided with the 3rd groove on described block of loosing core,Described carve tight block buckle in described 3rd groove,Carve tight block described in and and along described 3rd groove, relative slip can occur with described block of loosing core.
  2. The self-locking mechanism of loosing core of a kind of injection mold the most according to claim 1, it is characterized in that, it is provided with the 4th groove on described block of loosing core, the inside carving tight block described in the leading section embedding of described little wedge is placed in described 4th groove, can slide in described 4th groove in the leading section of described little wedge.
  3. The self-locking mechanism of loosing core of a kind of injection mold the most according to claim 2, it is characterised in that the forward end lower surface of described little wedge for carving tight face, described in carve tight face and described block of loosing core the upper surface of the 4th groove there is certain angle.
  4. The self-locking mechanism of loosing core of a kind of injection mold the most according to claim 3, it is characterised in that described in carve tight face and described block of loosing core the angle of upper surface of the 4th groove be preferably 5 degree.
  5. The self-locking mechanism of loosing core of a kind of injection mold the most according to claim 1, it is characterised in that the two ends of described locating piece are flat-top inclined-plane.
  6. The self-locking mechanism of loosing core of a kind of injection mold the most according to claim 1, it is characterized in that, the leading section of described little wedge be completely disposed at described in loose core block the 4th groove in time, the air line distance between the first groove and second groove of described press strip of described little wedge is 58 mm.
  7. The self-locking mechanism of loosing core of a kind of injection mold the most according to claim 1, it is characterised in that described driver element is oil cylinder, described oil cylinder is provided with pull bar, and described oil cylinder is connected with described little wedge by described pull bar.
  8. 8. the die sinking method of the self-locking mechanism of loosing core of the injection mold utilized in claim 1-7 described in any one, it is characterized in that, the starting stage of die sinking, carving described in the leading section embedding of described little wedge in the 4th groove of block of loosing core described in being placed on inside tight block, the locating piece in described through hole is limited in the second groove of described press strip;The most described driver element drives little wedge to move forward 58 mm along straight reciprocating motion stroke, the position of the most described second groove, described locating piece and described first groove three is exactly in approximately the same plane, and described locating piece is slipped in the first groove of described little wedge to medial movement 2.5 mm by spacing described second groove;Continue to be driven described little wedge rearward movement by described driver element, owing to the locating piece in through hole described during this is limited in the first groove of described little wedge, so carving the motion of tight block described in described little wedge motion also drive, the block the 3rd groove along described block of loosing core of loosing core described in extruding is the most also moved upward by the described motion carving tight block, described driver element drives described little wedge and carves tight block and move forward 80 mm, now described in block of loosing core move up 22.3 Mm so that product completely disengages from mould.
  9. 9. the closing method of the self-locking mechanism of loosing core of the injection mold utilized in claim 1-7 described in any one, it is characterised in that the starting stage of matched moulds, the locating piece in described through hole is limited in the first groove of described little wedge;Described driver element drives described little wedge to travel forward, owing to the locating piece in the most described through hole is limited in the first groove of described little wedge, so carving the motion of tight block described in described little wedge motion also drive, the block the 3rd groove along described block of loosing core of loosing core described in extruding is the most also moved downward by the described motion carving tight block, described driver element drives described little wedge and carves tight block and be moved rearwards by 80 mm, now described in block of loosing core move down 22.3 Mm, the position of the most described first groove, described locating piece and described second groove three is exactly in approximately the same plane, and described locating piece is moved in the second groove that 2.5mm slips into described press strip laterally by the first groove of spacing described little wedge;Continue to be driven described little wedge to travel forward by described driver element, owing to locating piece described during this is not limited in the first groove of described little wedge, so the motion of the most described little wedge will not drive described in carve tight block and move, described driver element drives little wedge to move forward 58 mm along straight reciprocating motion stroke, make described little wedge leading section embed carve be placed on inside tight block described in loose core block the 4th groove in, owing to the upper surface of the 4th groove carving tight face and described block of loosing core of described little wedge exists angle, make to carve block of loosing core described in the pinning of tight face, so that loose core, block is not subjected to displacement under injection state.
CN201510051549.8A 2015-02-01 2015-02-01 The core pulling self-locking mechanism of injection mold Active CN105984085B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106426784A (en) * 2016-11-11 2017-02-22 博戈橡胶金属(上海)有限公司 Clutch pedal single-hydraulic-cylinder oblique loose core self-locking structure
CN109049552A (en) * 2016-11-02 2018-12-21 厦门市超日精密模具有限公司 A kind of continuous leapfrog formula injection mold die sinking method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203726721U (en) * 2014-01-20 2014-07-23 骏越科技(深圳)有限公司 Die with locking mechanism
CN203752447U (en) * 2014-04-08 2014-08-06 威士茂科技工业园(珠海)有限公司 Inclined core pulling mould
CN204471761U (en) * 2015-02-01 2015-07-15 宁波兴利汽车模具有限公司 The self-locking mechanism of loosing core of injection mold

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203726721U (en) * 2014-01-20 2014-07-23 骏越科技(深圳)有限公司 Die with locking mechanism
CN203752447U (en) * 2014-04-08 2014-08-06 威士茂科技工业园(珠海)有限公司 Inclined core pulling mould
CN204471761U (en) * 2015-02-01 2015-07-15 宁波兴利汽车模具有限公司 The self-locking mechanism of loosing core of injection mold

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109049552A (en) * 2016-11-02 2018-12-21 厦门市超日精密模具有限公司 A kind of continuous leapfrog formula injection mold die sinking method
CN106426784A (en) * 2016-11-11 2017-02-22 博戈橡胶金属(上海)有限公司 Clutch pedal single-hydraulic-cylinder oblique loose core self-locking structure

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