CN103737866B - A kind of threaded demoulding mechanism of injection mold - Google Patents
A kind of threaded demoulding mechanism of injection mold Download PDFInfo
- Publication number
- CN103737866B CN103737866B CN201310711716.8A CN201310711716A CN103737866B CN 103737866 B CN103737866 B CN 103737866B CN 201310711716 A CN201310711716 A CN 201310711716A CN 103737866 B CN103737866 B CN 103737866B
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- CN
- China
- Prior art keywords
- core
- lower die
- die model
- injection mold
- thread
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of threaded demoulding mechanism of injection mold, comprise the lower bolster fit together successively, intermediate plate, backing plate, at described lower bolster, intermediate plate, backing plate offers and runs through described lower bolster, intermediate plate, the straight type passage of backing plate, the lower die model core for shaping plastic inner sidewall upper portion is provided with in described straight type passage, described lower die model core lower end is fixed on described backing plate by limited block, the thread core for shaping plastic madial wall lower thread is had in described lower die model core outer setting, described thread core is connected with and drives described thread core rotate thus make on described thread core, the drive unit of lower motion, a kind of motor driven threaded demoulding mechanism is provided with in a mold among the present invention, realize die sinking rear mold and automatically complete screw thread stripping 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.
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, the plastic demoulding can be realized by arranging moving core, mould structure is simple, low cost of manufacture, but adopt this type of stripping means that mould production efficiency will be caused low, manipulation strength is heavy, high efficiency injection moulding in enormous quantities can not be adapted to and produce.
Screw thread on working of plastics is divided into internal thread and external screw thread.Usually, the internal thread thread core on working of plastics is shaping, and external screw thread Mold Ring with Screw Thread is shaping.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 when structure allows, the internal thread of segmentation can be designed to.From mould structure, if space allows, slanted pushing rod inner core pulling can be adopted to carry out the internal thread of shaping segmentation.For internal thread complete on working of plastics, its forming method mainly contains: the mode 1. adopting forced stripper mechanism, but requires that plastic piece structure allows, and adopts the plastics of good springiness; 2. thread core is made movable insert, outside mould, carry out hand-stripping, 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-tight, 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 comparatively large, and if adopt movable whorl core at the outer manual Leave out thread of mould, because its production efficiency is low, be difficult to adapt to the large requirement of production lot.
[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 realizes die sinking rear mold and automatically completes screw thread stripping action; production efficiency is high, and the screw thread demoulding being convenient in enormous quantities, high efficiency injection mold is produced.
For achieving the above object, present invention employs following technical proposals:
A kind of threaded demoulding mechanism of injection mold, comprise the lower bolster fit together successively, intermediate plate, backing plate, at described lower bolster, intermediate plate, backing plate offers and runs through described lower bolster, intermediate plate, the straight type passage of backing plate, the lower die model core for shaping plastic inner sidewall upper portion is provided with in described straight type passage, described lower die model core lower end is fixed on described backing plate by limited block, the thread core for shaping plastic madial wall lower thread is had in described lower die model core outer setting, described thread core is connected with and drives described thread core rotate thus make on described thread core, the drive unit of lower motion, described thread core is also connected with on auxiliary described thread core, the guiding swivel nut of lower motion, described lower die model core inside is provided with the lower die model core passage running through described lower die model core, the push rod for being ejected by the described shaping plastic of machine-shaping is provided with in described lower die model core passage, described push rod is by being installed on the Driven by Hydraulic Cylinder on injection machine, can be up and down in described lower die model core passage.
Drive unit described above comprises fluid pressure drive device and is connected to the transmission device between described thread core and described fluid pressure drive device.
Transmission device described above comprises the tooth bar be connected with described fluid pressure drive device, the pinion rotated by described rack drives, the gear shaft rotated is driven by described pinion, the gear wheel rotated is driven by described gear shaft, described pinion, gear wheel are fixedly connected on described gear shaft, and described gear wheel drives described thread core to rotate.
Lower bolster described above, intermediate plate, backing plate are fixed together by trip bolt.
Lower die model core upper end described above is provided with inverted taper platform, and 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.
Push rod top described above is provided with inverted push rod taper platform.
The described thread core driven by gear wheel described above is multiple.
The described thread core driven by gear wheel described above 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, depart from the helicitic texture of plastic gradually, after the screw thread demoulding, utilize push rod to be ejected by plastic, plastic departs from lower die model core, completes the stripping 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 homing action gradually, 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, a kind of motor driven threaded demoulding mechanism is provided with among the present invention in a mold; realize die sinking rear mold and automatically complete screw thread stripping action; reduce the error that manual operation produces, improve the production efficiency of injection mold, the screw thread demoulding being convenient in enormous quantities, high efficiency injection mold is produced.
2, adopt fluid pressure drive device among the present invention, 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 are high, the life-span is long.
[accompanying drawing explanation]
Fig. 1 is top view of the present invention.
Fig. 2 is the A-A sectional view among Fig. 1.
Fig. 3 is the A portion enlarged drawing among Fig. 2.
[detailed description of the invention]
Below in conjunction with accompanying drawing, further detailed description is done to the present invention.
As shown in Figure 1 to Figure 3, a kind of threaded demoulding mechanism of injection mold, comprise the lower bolster 1 fit together successively, intermediate plate 2, backing plate 3, at described lower bolster 1, intermediate plate 2, backing plate 3 offers and runs through described lower bolster 1, intermediate plate 2, the straight type passage 4 of backing plate 3, the lower die model core 6 for shaping plastic 5 inner sidewall upper portion is provided with in described straight type passage 4, described lower die model core 6 lower end is fixed on described backing plate 3 by limited block 7, the thread core 8 for shaping plastic 5 madial wall lower thread is had in described lower die model core 6 outer setting, described thread core 8 is connected with and drives described thread core 8 rotate thus make on described thread core 8, lower motion drive unit 9, described thread core 8 is also connected with on auxiliary described thread core 8, the guiding swivel nut 10 of lower motion, described lower die model core 6 inside is provided with the lower die model core passage 61 running through described lower die model core 6, the push rod 11 for being ejected by the described shaping plastic 5 of machine-shaping is provided with in described lower die model core passage 61, described push rod 11 is by being installed on the Driven by Hydraulic Cylinder on injection machine, can be up and down in described lower die model core passage 61, a kind of motor driven threaded demoulding mechanism is provided with in a mold among the present invention, realize die sinking rear mold and automatically complete screw thread stripping 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 be connected with described fluid pressure drive device 91, the pinion 922 of rotation is driven by described tooth bar 921, the gear shaft 923 of rotation is driven by described pinion 922, the gear wheel 924 of rotation is driven by described gear shaft 923, 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 are 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, described lower die model core 6 upper end is provided with inverted taper platform 62, the pressing plate 13 for fixing described lower die model core 6 is provided with in described lower die model core 6 lower end, described pressing plate 13 is fixed on described backing plate 3 by trip bolt, and described taper platform is mainly used in forming the threadless part of plastic plastic 5 inner sidewall upper portion.
As shown in Figure 2 and Figure 3, in the present embodiment, described push rod 11 top is provided with inverted push rod taper platform 111, is convenient to the plastic after by thread forming and releases.
As shown in Figure 1, in the present embodiment, the described thread core 8 driven by described gear wheel 924, for multiple, are preferably 2, greatly promote 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 axle 923 is 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, depart from the helicitic texture of plastic 5 gradually, after the screw thread demoulding, utilize push rod 11 to be ejected by plastic 5, plastic 5 departs from lower die model core 6, completes the stripping action of plastic 5.
During reset, fluid pressure drive device 91 drives tooth bar 921 to do reverse reset, tooth bar 921 drives pinion 922 to rotate, pinion 922 driven gear axle 923 turns 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 homing action gradually, 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) fit together successively, intermediate plate (2), backing plate (3), in described lower bolster (1), intermediate plate (2), backing plate (3) offers and runs through described lower bolster (1), intermediate plate (2), the straight type passage (4) of backing plate (3), the lower die model core (6) for shaping plastic (5) inner sidewall upper portion is provided with in described straight type passage (4), described lower die model core (6) lower end is fixed on described backing plate (3) by limited block (7), the thread core (8) for shaping plastic (5) madial wall lower thread is had in described lower die model core (6) outer setting, described thread core (8) is connected with and drives described thread core (8) rotate thus make on described thread core (8), the drive unit (9) of lower motion, described thread core (8) is also connected with on auxiliary described thread core (8), the guiding swivel nut (10) of lower motion, the lower die model core passage (61) running through described lower die model core (6) is provided with in described lower die model core (6) inside, the push rod (11) for being ejected by the described shaping plastic (5) of machine-shaping is provided with in described lower die model core passage (61), described push rod (11) is by being installed on the Driven by Hydraulic Cylinder on injection machine, can be up and down in described lower die model core passage (61).
2. the threaded demoulding mechanism of injection mold according to claim 1, is characterized in that: 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).
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) be connected with described fluid pressure drive device (91), the pinion (922) rotated is driven by described tooth bar (921), the gear shaft (923) rotated is driven by described pinion (922), the gear wheel (924) rotated is driven by described gear shaft (923), 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: described lower die model core (6) upper end is provided with inverted taper platform (62); be provided with the pressing plate (13) for fixing described lower die model core (6) in described lower die model core (6) lower end, 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: described push rod (11) top is 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) driven by described gear wheel (924) is for multiple.
8. the threaded demoulding mechanism of injection mold according to claim 7, is characterized in that: the described thread core (8) driven by described gear wheel (924) 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 CN103737866A (en) | 2014-04-23 |
| CN103737866B true 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 |
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| Country | Link |
|---|---|
| CN (1) | CN103737866B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106696196B (en) * | 2017-03-17 | 2023-03-10 | 宁波可逢日用品制造有限公司 | Mold for manufacturing vacuum flask shell, demolding method and production method |
| CN107042618B (en) * | 2017-05-27 | 2023-04-07 | 张家港市天江精密模具制造有限公司 | 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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| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0624746B2 (en) * | 1990-09-04 | 1994-04-06 | 株式会社型システム | Mold for products with screws |
-
2013
- 2013-12-19 CN CN201310711716.8A patent/CN103737866B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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| Publication number | Publication date |
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| CN103737866A (en) | 2014-04-23 |
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| 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 |
Inventor after: Zhang Siyi Inventor before: Ding Ligang |
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| CB03 | Change of inventor or designer information | ||
| 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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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20191219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |