CN103737866A - Threaded demolding mechanism of injection molding mold - Google Patents
Threaded demolding mechanism of injection molding mold Download PDFInfo
- Publication number
- CN103737866A CN103737866A CN201310711716.8A CN201310711716A CN103737866A CN 103737866 A CN103737866 A CN 103737866A CN 201310711716 A CN201310711716 A CN 201310711716A CN 103737866 A CN103737866 A CN 103737866A
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- CN
- China
- Prior art keywords
- core
- threaded
- lower die
- die model
- injection mold
- Prior art date
- 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.)
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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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2001/00—Articles provided with screw threads
Abstract
The invention relates to a threaded demolding mechanism of an injection molding mold. The threaded demolding mechanism of the injection molding mold comprises a lower mold plate, an intermediate plate and a cushion plate which are fit together sequentially; a straight through channel which penetrates through the lower mold plate, the intermediate plate and the cushion plate are formed in the lower mold plate, the intermediate plate and the cushion plate; a lower mold core for forming the upper part of the inner side wall of a plastic element is arranged in the straight through channel; the lower end of the lower mold core is fixed on the cushion plate by a spacing block; the lower mold core is externally provided with threaded cores for forming threads at the lower part of the inner side wall of the plastic element; the threaded cores are connected with a driving device for driving the threaded cores to rotate so as to enable the threaded cores to move up and down. According to the threaded demoulding mechanism disclosed by the invention, a maneuvering type threaded demolding mechanism is arranged in the mold, so that the mold completes the threaded demolding motion automatically after being opened; errors caused by manual operation are reduced; the production efficiency of the injection molding mold is improved; the large-batch and efficient threaded demolding production of the injection molding mold can be completed conveniently.
Description
[technical field]
The present invention relates to a kind of threaded demoulding mechanism of injection mold.
[background technology]
At present, threaded plastic products are widely used in life, core-pulling mechanism is also mechanism common in injection mold, and for tapped plastic, can realize the plastic demoulding by moving core is set, mould structure is simple, low cost of manufacture, but adopt this type of stripping means will cause mould production efficiency low, manipulation strength is heavy, can not adapts to high efficiency injection moulding in enormous quantities and produce.
Screw thread on working of plastics is divided into internal thread and external screw thread.Conventionally, the thread core moulding of the internal thread on working of plastics, external screw thread Mold Ring with Screw Thread moulding.Due to the particularity of screw thread, the mould structure of threaded portion is different, and its mode of deviating from screw thread is also different.For the internal thread of working of plastics, if in the situation that structure allows, can be designed to the internal thread of segmentation.From mould structure, if space allows, can adopt slanted pushing rod inner core pulling to carry out the internal thread of moulding segmentation.For internal thread complete on working of plastics, its forming method mainly contains: 1. adopt the mode of forced stripper mechanism, but require plastic piece structure to allow, and adopt the plastics of good springiness; 2. thread core is made to movable insert, at mould, carry out hand-stripping outward, although mould structure is simple, production efficiency is low, and labour intensity is large, can not realize automation mechanized operation; Bottle cap material therefor is generally polyethylene (PE) plastics, produces in enormous quantities, requires working of plastics good looking appearance, without forming defects such as depression, distortion.Bottle cap coordinates with hollow bottle and requires water-tightly, and good airproof performance, adopts the female thread structure of complete (continuously).Consider to adopt forced stripper mechanism can cause demoulding difficulty, internal thread distortion is larger, and if employing movable whorl core changable screw thread outside mould, because its production efficiency is low, is difficult to adapt to the requirement that production lot is large.
[summary of the invention]
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art; a kind of threaded demoulding mechanism of injection mold is provided; the threaded demoulding mechanism of this injection mold is realized die sinking rear mold and is automatically completed screw thread demoulding action; production efficiency is high, is convenient to the screw thread demoulding in enormous quantities, high efficiency injection mold and produces.
For achieving the above object, the present invention has adopted following technical proposals:
A kind of threaded demoulding mechanism of injection mold, comprise the lower bolster fitting together successively, intermediate plate, backing plate, at described lower bolster, intermediate plate, on backing plate, offer and run through described lower bolster, intermediate plate, the straight type passage of backing plate, in described straight type passage, be provided with the lower die model core for moulding plastic madial wall top, described lower die model core lower end is fixed on described backing plate by limited block, in described lower die model core outer setting, be useful on the thread core of moulding plastic madial wall lower thread, thereby be connected with on described thread core, drive described thread core rotation to make on described thread core, the drive unit of lower motion, on described thread core, be also connected with on auxiliary described thread core, the guiding swivel nut of lower motion, in described lower die model core inside, be provided with the lower die model core passage that runs through described lower die model core, in described lower die model core passage, be provided with the push rod for the described plastic of machine-shaping is ejected, described push rod can be up and down in described lower die model core passage by the Driven by Hydraulic Cylinder being installed on injection machine.
As mentioned above drive unit comprise fluid pressure drive device and be connected to described thread core and described fluid pressure drive device between transmission device.
Transmission device comprises the tooth bar being connected with described fluid pressure drive device as mentioned above, the pinion being rotated by described rack drives, by described pinion, driven the gear shaft rotating, by described gear shaft, driven the gear wheel rotating, described pinion, gear wheel are fixedly connected on described gear shaft, and described gear wheel drives described thread core to rotate.
Lower bolster, intermediate plate, backing plate are fixed together by trip bolt as mentioned above.
In lower die model core upper end as mentioned above, be provided with inverted taper platform, be provided with the pressing plate for fixing described lower die model core in described lower die model core lower end, described pressing plate is fixed on described backing plate by trip bolt.
On push rod top as mentioned above, be provided with inverted push rod taper platform.
By the described thread core that gear wheel drives as mentioned above, be a plurality of.
By the described thread core that gear wheel drives as mentioned above, it is 2.
Its course of work is: during the demoulding, fluid pressure drive device drives tooth bar to do rectilinear motion, rack drives pinion rotation, pinion driven gear axle is rotated counterclockwise, and drives thread core to turn clockwise by gear wheel, under the guiding of guiding swivel nut, thread core moves downward, the helicitic texture that departs from gradually plastic, after the screw thread demoulding, utilizes push rod that plastic is ejected, plastic departs from lower die model core, completes the demoulding action of plastic.
During reset, fluid pressure drive device driving gear row culture oppositely resets, rack drives pinion rotation, pinion driven gear axle turns clockwise, and drive thread core to be rotated counterclockwise by gear wheel, under the guiding of guiding swivel nut, thread core moves upward, and completes gradually homing action, push rod relies on the mould assembling action of mould to reset, and mould resets complete.
The invention has the beneficial effects as follows:
1, among the present invention, in mould, be provided with a kind of motor driven threaded demoulding mechanism; realize die sinking rear mold and automatically complete screw thread demoulding action; reduce the error that manual operation produces, improve the production efficiency of injection mold, be convenient to the screw thread demoulding in enormous quantities, high efficiency injection mold and produce.
2, among the present invention, adopt fluid pressure drive device, transmission is easy to realize rectilinear motion, lightweight, volume is little, motional inertia is little, reaction speed is fast.
3, the transmission device among the present invention adopts gear drive, has the features such as transmission is accurate, compact conformation, efficiency is high, the life-span is long.
[accompanying drawing explanation]
Fig. 1 is top view of the present invention.
Fig. 2 is the A-A cutaway view among Fig. 1.
Fig. 3 is the A portion enlarged drawing among Fig. 2.
[specific embodiment]
Below in conjunction with accompanying drawing, the present invention is done to further detailed description.
As shown in Figure 1 to Figure 3, a kind of threaded demoulding mechanism of injection mold, comprise the lower bolster 1 fitting together successively, intermediate plate 2, backing plate 3, at described lower bolster 1, intermediate plate 2, on backing plate 3, offer and run through described lower bolster 1, intermediate plate 2, the straight type passage 4 of backing plate 3, in described straight type passage 4, be provided with the lower die model core 6 for moulding plastic 5 madial wall tops, described lower die model core 6 lower ends are fixed on described backing plate 3 by limited block 7, in described lower die model core 6 outer setting, be useful on the thread core 8 of moulding plastic 5 madial wall lower thread, thereby be connected with on described thread core 8, drive described thread core 8 rotations to make on described thread core 8, lower motion drive unit 9, on described thread core 8, be also connected with on auxiliary described thread core 8, the guiding swivel nut 10 of lower motion, in described lower die model core 6 inside, be provided with the lower die model core passage 61 that runs through described lower die model core 6, in described lower die model core passage 61, be provided with the push rod 11 for the described plastic 5 of machine-shaping is ejected, described push rod 11 can be interior up and down at described lower die model core passage 61 by the Driven by Hydraulic Cylinder being installed on injection machine, among the present invention, in mould, be provided with a kind of motor driven threaded demoulding mechanism, realize die sinking rear mold and automatically complete screw thread demoulding action, reduce the error that manual operation produces, improve the production efficiency of injection mold, be convenient in enormous quantities, the screw thread demoulding of high efficiency injection mold is produced.
As shown in Figure 1 and Figure 2, in the present embodiment, described drive unit 9 comprises fluid pressure drive device 91 and is connected to the transmission device 92 between described thread core 8 and described fluid pressure drive device 91, fluid pressure drive device transmission is easy to realize rectilinear motion, lightweight, volume is little, motional inertia is little, reaction speed is fast.
As shown in Figure 1 and Figure 2, in the present embodiment, described transmission device 92 comprises the tooth bar 921 being connected with described fluid pressure drive device 91, by described tooth bar 921, drive the pinion 922 rotating, by described pinion 922, drive the gear shaft 923 rotating, by described gear shaft 923, drive the gear wheel 924 rotating, described pinion 922, gear wheel 924 are fixedly connected on described gear shaft 923, described gear wheel 924 drives described thread core 8 to rotate, and gear drive has the features such as transmission is accurate, compact conformation, efficiency is high, the life-span is long.
As shown in Figure 1 and Figure 2, in the present embodiment, described lower bolster 1, intermediate plate 2, backing plate 3 are fixed together by trip bolt 12, are connected firmly, and are convenient to realize.
As shown in Figure 2 and Figure 3, in the present embodiment, in described lower die model core 6 upper ends, be provided with inverted taper platform 62, in described lower die model core 6 lower ends, be provided with the pressing plate 13 for fixing described lower die model core 6, described pressing plate 13 is fixed on described backing plate 3 by trip bolt, and described taper platform is mainly used in forming the plastic plastic 5 threadless parts in madial wall top.
As shown in Figure 2 and Figure 3, in the present embodiment, on described push rod 11 tops, be provided with inverted push rod taper platform 111, be convenient to the plastic after thread forming to release.
As shown in Figure 1, in the present embodiment, the described thread core 8 being driven by described gear wheel 923 is a plurality of, is preferably 2, greatly promotes the production efficiency of the threaded demoulding mechanism of injection mold.
Operation principle of the present invention is:
During the demoulding, fluid pressure drive device 91 drives tooth bar 921 to do rectilinear motion, tooth bar 921 drives pinion 922 to rotate, and pinion 922 driven gear axles 923 are rotated counterclockwise, and drives thread core 8 to turn clockwise by gear wheel 924, under the guiding of guiding swivel nut 10, thread core 8 moves downward, the helicitic texture that departs from gradually plastic 5, after the screw thread demoulding, utilizes push rod 11 that plastic 5 is ejected, plastic 5 departs from lower die model core 6, completes the demoulding action of plastic 5.
During reset, fluid pressure drive device 91 drives tooth bar 921 to do oppositely to reset, tooth bar 921 drives pinion 922 to rotate, pinion 922 driven gear axles 923 turn clockwise, and drive thread core 8 to be rotated counterclockwise by gear wheel 924, under the guiding of guiding swivel nut 10, thread core 8 moves upward, and completes gradually homing action, push rod 11 relies on the mould assembling action of mould to reset, and mould resets complete.
Claims (8)
1. the threaded demoulding mechanism of an injection mold, it is characterized in that: comprise the lower bolster (1) fitting together successively, intermediate plate (2), backing plate (3), in described lower bolster (1), intermediate plate (2), on backing plate (3), offer and run through described lower bolster (1), intermediate plate (2), the straight type passage (4) of backing plate (3), in described straight type passage (4), be provided with the lower die model core (6) for moulding plastic (5) madial wall top, described lower die model core (6) lower end is fixed on described backing plate (3) by limited block (7), in described lower die model core (6) outer setting, be useful on the thread core (8) of moulding plastic (5) madial wall lower thread, on described thread core (8), be connected with to drive described thread core (8) thereby rotate and make on described thread core (8), the drive unit of lower motion (9), on described thread core (8), be also connected with on auxiliary described thread core (8), the guiding swivel nut (10) of lower motion, in described lower die model core (6) inside, be provided with the lower die model core passage (61) that runs through described lower die model core (6), in described lower die model core passage (61), be provided with the push rod (11) for the described plastic (5) of machine-shaping is ejected, described push rod (11) can be up and down in described lower die model core passage (61) by the Driven by Hydraulic Cylinder being installed on injection machine.
2. the threaded demoulding mechanism of injection mold according to claim 1, is characterized in that: described drive unit (9) comprise fluid pressure drive device (91) and be connected to described thread core (8) and described fluid pressure drive device (91) between transmission device (92).
3. the threaded demoulding mechanism of injection mold according to claim 2, it is characterized in that: described transmission device (92) comprises the tooth bar (921) being connected with described fluid pressure drive device (91), by described tooth bar (921), driven the pinion (922) rotating, by described pinion (922), driven the gear shaft (923) rotating, by described gear shaft (923), driven the gear wheel (924) rotating, described pinion (922), gear wheel (924) is fixedly connected on described gear shaft (923), described gear wheel (924) drives described thread core (8) to rotate.
4. the threaded demoulding mechanism of injection mold according to claim 1, is characterized in that: described lower bolster (1), intermediate plate (2), backing plate (3) are fixed together by trip bolt (12).
5. the threaded demoulding mechanism of injection mold according to claim 1; it is characterized in that: in described lower die model core (6) upper end, be provided with inverted taper platform (62); in described lower die model core (6) lower end, be provided with the pressing plate (13) for fixing described lower die model core (6), described pressing plate (13) is fixed on described backing plate (3) by trip bolt.
6. the threaded demoulding mechanism of injection mold according to claim 1, is characterized in that: on described push rod (11) top, be provided with inverted push rod taper platform (111).
7. the threaded demoulding mechanism of injection mold according to claim 3, is characterized in that: the described thread core (8) being driven by described gear wheel (923) is for a plurality of.
8. the threaded demoulding mechanism of injection mold according to claim 7, is characterized in that: the described thread core (8) being driven by described gear wheel (923) is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711716.8A CN103737866B (en) | 2013-12-19 | 2013-12-19 | A kind of threaded demoulding mechanism of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711716.8A CN103737866B (en) | 2013-12-19 | 2013-12-19 | A kind of threaded demoulding mechanism of injection mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103737866A true CN103737866A (en) | 2014-04-23 |
| CN103737866B CN103737866B (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310711716.8A Expired - Fee Related CN103737866B (en) | 2013-12-19 | 2013-12-19 | A kind of threaded demoulding mechanism of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103737866B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106696196A (en) * | 2017-03-17 | 2017-05-24 | 宁波可逢日用品制造有限公司 | Mold for manufacturing vacuum flask shell, demolding method and production method |
| CN107042618A (en) * | 2017-05-27 | 2017-08-15 | 张家港市天江精密模具制造有限公司 | A kind of injection mold of deep thread bottle cap |
| CN108746627A (en) * | 2018-05-25 | 2018-11-06 | 合肥汇智新材料科技有限公司 | One kind is metal powder injection molded to use shaping dies |
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| CN202318816U (en) * | 2011-11-17 | 2012-07-11 | 佛山市科尔技术发展有限公司 | Gear die-closing mechanism of die |
| CN102582041A (en) * | 2012-03-10 | 2012-07-18 | 苏州雅尔塑业科技有限公司 | Rack rotary demolding mechanism |
| CN102896739A (en) * | 2012-09-29 | 2013-01-30 | 鸿利达模具(深圳)有限公司 | Multipurpose die for multi-component injection moulding and assembly |
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2013
- 2013-12-19 CN CN201310711716.8A patent/CN103737866B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04113820A (en) * | 1990-09-04 | 1992-04-15 | Kata Syst:Kk | Mold for product with screw |
| EP0585671A1 (en) * | 1992-08-25 | 1994-03-09 | Battenfeld Kunststoffmaschinen Ges.m.b.H. | Ejection unit for injection moulding machines |
| US5531588A (en) * | 1995-05-05 | 1996-07-02 | Electra Form, Inc. | Adjustable cam track for an injection molding machine |
| CN102078951A (en) * | 2009-11-27 | 2011-06-01 | 牟维军 | Mold mechanism with threaded loose core and side loose core of movable and fixed molds |
| CN102189622A (en) * | 2010-03-03 | 2011-09-21 | 苏州汉扬精密电子有限公司 | Internal-thread forming mechanism with ejecting plate |
| CN202106517U (en) * | 2011-04-25 | 2012-01-11 | 台州市黄岩炜大塑料机械有限公司 | Transverse internal-thread product demoulding mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106696196A (en) * | 2017-03-17 | 2017-05-24 | 宁波可逢日用品制造有限公司 | Mold for manufacturing vacuum flask shell, demolding method and production method |
| CN107042618A (en) * | 2017-05-27 | 2017-08-15 | 张家港市天江精密模具制造有限公司 | A kind of injection mold of deep thread bottle cap |
| CN108746627A (en) * | 2018-05-25 | 2018-11-06 | 合肥汇智新材料科技有限公司 | One kind is metal powder injection molded to use shaping dies |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103737866B (en) | 2016-01-20 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Siyi Inventor before: Ding Ligang |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170417 Address after: 528400 Guangdong Province Dongsheng Town, Zhongshan City Road, No. 11 Patentee after: Zhongshan City Heng Heng Mold Co., Ltd. Address before: 528400 Zhongshan Torch Development Zone, Guangdong, Ling village, the base 101 Patentee before: ZHONGSHAN JIABEI HARDWARE MOULD CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20191219 |