CN103660189A - Demoulding structure for plastic helical gear injection molding - Google Patents
Demoulding structure for plastic helical gear injection molding Download PDFInfo
- Publication number
- CN103660189A CN103660189A CN201310733404.7A CN201310733404A CN103660189A CN 103660189 A CN103660189 A CN 103660189A CN 201310733404 A CN201310733404 A CN 201310733404A CN 103660189 A CN103660189 A CN 103660189A
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- Prior art keywords
- plate
- cavity
- gear
- dynamic model
- cover half
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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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
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
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- 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
- B29L2015/00—Gear wheels or similar articles with grooves or projections, e.g. control knobs
- B29L2015/003—Gears
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the field of mould making, in particular to a demoulding structure for plastic helical gear injection molding. The plastic helical gear mould comprises a fixing mould part, a moving mould part, and a demoulding component comprising a pulling plate fixed on a fixing mould cavity plate and a gear cavity plate, and an ejection structure arranged on the moving mould part, wherein a fixing mould cavity positioned in the fixing mould cavity plate, a gear cavity positioned in the gear cavity plate, and a moving mould cavity in the moving cavity plate mutually form step shapes, and sequentially and tightly connected in a sleeving manner to form a helical gear cavity. During the demoulding process, under the effect of the demoulding component, the injection molded plastic helical gear rotationally moves forwards in a spiral manner along the inner surface of the gear cavity to realize mold stripping, so that the finished plastic helical gear is obtained. The structure has the advantages that the mould is simple in structure, high in product accuracy and stable in production, and overcomes difficulties of easiness in deformation of the spiral plastic helical gear during the injection process, gear ring cooling, gear ring resetting performed to satisfy the requirements for gear position.
Description
Technical field
The present invention relates to plastic beveled wheel mold and manufacture field, refer in particular to a kind of plastic beveled wheel injection mo(u)lding demolding structure.
Background technology
Plastic beveled wheel is widely used in modern industry, compares it have the advantages such as lightweight, operation noise is low, self lubricity is good with metal helical gear.Plastic beveled wheel is mainly taked mold injection molding, and it has the advantages that efficiency is high, cost is low.
At present plastic beveled wheel injection mold adopts this by the rotate technical scheme of depanning of the helical gear goods driven gear die cavity by keeping straight on mostly, similar Chinese patent on May 29th, 2013 the disclosed patent No. be the structure of " 201310075397.6 ", " a kind of spiral stripper apparatus of helical gear injection mold ", it adopts the device consisting of rotation die cavity, dynamic model support plate, pressing plate and bearing, and the bearing being enclosed within on gear die cavity has played key effect with the bearing being placed under gear die cavity.This scheme there will be many problems in actual implementation process: said structure rotatablely moves because gear die cavity will produce, on gear die cavity, cooling water channel can not be set, injection machine note into the heat that produces of molten plastic can not pass fast by gear die cavity, thereby cause injection molding cycle elongated, efficiency low cost is high, also cause helical gear helical form profile to shrink the uneven yielding goods precision that affects, the bearing and the gear die cavity that are enclosed within gear die cavity cylindrical expand with heat and contract with cold inconsistent, gear die cavity is explosive to be split, the heat that in injection moulding process, plastics produce can be transmitted to bearing by gear die cavity, bearing internal structure is slided to have some setbacks, when ejecting goods, the frictional force of gear die cavity rotation strengthens and causes the distortion of helical gear helical form resemblance, to there being the plastic beveled wheel mold of tooth status requirement, adopt at present mostly similar Chinese patent on June 5th, 2013 the disclosed patent No. be " 201110381777.3 ", the structure of " resetting structure of beveled wheel mold and beveled wheel mold ", by being fixed on the reset push rod of cover half die cavity, inject in the locating hole of the free gear die cavity be placed in dynamic model part and complete reset, this structure need to arrange skewed slot to coordinate the inclined-plane in reset push rod head on gear die cavity, in specific implementation process, on gear die cavity, skewed slot and hole to be set, gear die cavity weakened, gear die cavity easily cracks and scraps at skewed slot and hole site, in long-term production process release link by force handsetting gear die cavity insert locating hole, locating hole can become large through long-time friction, thereby gear die cavity reseting precision can not guarantee.
Summary of the invention
The object of the invention is to defect and deficiency for above-mentioned prior art, for plastic beveled wheel mold manufacture field provides a kind of plastic beveled wheel injection mo(u)lding demolding structure.
The technical solution used in the present invention is for achieving the above object:
A kind of plastic beveled wheel injection mo(u)lding demolding structure, it comprises cover half part and dynamic model part, top board, the stripper plate of described cover half part, cover half cavity plate is upper and lower with guide pillar, is fixedly linked successively, cover half cavity plate center is provided with cover half die cavity, and described cover half die cavity is pushed down and is fixed in cover half cavity plate by pressing plate.Gear cavity plate, the dynamic model cavity plate of described dynamic model part are fixedly linked with guide pillar, dynamic model cavity plate, dynamic model backing plate, square iron, moving clamping plate are fixedly linked with lock-screw, and ejector retainner plate is fixedly connected with lock-screw with ejector retainner plate supporting plate and release link is installed and dynamic model is partly slidably matched.The arm-tie being fixed in cover half cavity plate and gear cavity plate forms demoulding assembly with the ejecting structure that is arranged on dynamic model part.Be arranged in the cover half die cavity of cover half cavity plate, the dynamic model die cavity of the gear die cavity of gear cavity plate, dynamic model cavity plate becomes mutually step be closely socketed successively and form helical gear cavity, the running gate system that is arranged on cover half part communicates with described helical gear cavity; During the demoulding, under the effect of described demoulding assembly, the plastic beveled wheel of injection mo(u)lding moves forward and depanning along being arranged on the rotation of gear type inner cavity surface helix feature, obtains plastic beveled wheel finished product.
Preferably, described demoulding assembly comprises the arm-tie being fixed in cover half cavity plate and gear cavity plate and the ejecting structure that is arranged on dynamic model part, ejecting structure comprises and is arranged on the ejector retainner plate of dynamic model part and the ejector retainner plate supporting plate that ejector retainner plate is fixedly linked, be fixed on the push rod of ejector retainner plate and ejector retainner plate supporting plate, release link, be linked in the spring in release link, described release link is through dynamic model backing plate, dynamic model cavity plate, gear cavity plate is fixedly connected with the contiguous block being located in gear cavity plate, described push rod is through dynamic model backing plate, dynamic model die cavity is positioned at the below of helical gear cavity.
Preferably, fixedly close-fitting is in gear cavity plate with lock-screw for described gear die cavity, and described gear die cavity becomes " D " shape to be accurately positioned in gear cavity plate, and described gear die cavity is provided with annular water route.
Preferably, described plastic beveled wheel helical form shape molding is at gear type inner cavity surface.
Preferably, described cover half is partly provided with limit screw, screw draw bar, spring, the screw-internal thread fit of described limit screw external screw thread and screw draw bar, and described spring is arranged between stripper plate and cover half cavity plate and is linked on screw draw bar; The nylon plug being arranged in cover half cavity plate is fixed in dynamic model cavity plate by connecting rod; Between gear cavity plate and dynamic model cavity plate, be fixed with distance screws.
Beneficial effect of the present invention is:
Gear die cavity close-fitting and being fixed in gear cavity plate, during plastic beveled wheel depanning, gear die cavity is motionless, at the push rod of ejecting structure, withstands in plastic beveled wheel craspedodrome process forward, and plastic beveled wheel moves forward and depanning along the helix feature rotation of gear type cavity wall, because gear type cavity outer wall is close to gear cavity plate endoporus and has cooling water to pass through, gear type cavity radiating is good, and plastic beveled wheel helical form profile is not yielding, and precision is high, molding cycle shortens, and has improved efficiency.Described the mould features compact structure, gear die cavity is non-explosive to be split.Gear die cavity bottom stage takes " D " shape structure and gear cavity plate accurately to locate, there is the plastic beveled wheel of tooth status requirement can realize easily by this structure, and need to be on gear die cavity shaping-orientation and resetting structure, guaranteed the intensity of gear die cavity.The present invention has effectively solved defect and the deficiency that current plastic beveled wheel mold exists.
Accompanying drawing explanation
Fig. 1 shows plastic beveled wheel mold of the present invention at the side view of closure state
Fig. 2 shows plastic beveled wheel mold opening schematic diagram of the present invention
Fig. 3 shows plastic beveled wheel mold product of the present invention and ejects schematic diagram
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated: this plastic beveled wheel mold comprises cover half part and dynamic model part.
As shown in Figure 1, top board 133, stripper plate 132 and the cover half cavity plate 131 of cover half part are fixedly connected by the guide pillar 134 that is fixed on top board.Stripper plate 132, cover half cavity plate 131 can move down leading of guide pillar 134, displacement is by the limit screw 135, screw draw bar 129 restrictions that are located at cover half part, the sequencing that each template of cover half part moves is controlled by the nylon plug 108 that is linked in the spring 136 on screw draw bar 129 and be located in cover half cavity plate 131, and spring 136 is contained between stripper plate 132 and cover half cavity plate 131 and is linked on screw draw bar 129.Cover half die cavity 107 is located at cover half cavity plate 131 and is fixed in cover half cavity plate 131 by pressing plate 106 use lock-screws, and described cover half die cavity 107 is provided with annular cooling water road.Sprue bush 101 upper ends that are positioned at cover half top board 133 centers are rounded, can make mould be fixed in injection machine, in the middle of sprue bush 101, be provided with charging aperture, pressing plate 106 in cover half cavity plate 131 is provided with runner 104, cover half die cavity 107 is provided with feed channel 105, and the material pin 103 back-off shape heads that draw that are fixed on sprue bush 101 are positioned at feed channel 105 tops.
Dynamic model part is mainly comprised of gear cavity plate 128, dynamic model cavity plate 125, dynamic model backing plate 123, square iron 122, ejector retainner plate 119, ejector retainner plate supporting plate 118, moving clamping plate 121 etc.Gear cavity plate 128 is merged and is slidably matched by guide pillar 112 covers that are fixed on dynamic model cavity plate 125, and gear cavity plate 128 displacements are controlled by distance screws 124.Gear cavity plate 128 is provided with gear die cavity 111, plastic beveled wheel 202 helical form shape moldings are at gear die cavity 111 inner surfaces, gear die cavity 111 use lock-screws 126 are fixed in gear cavity plate 128 and become " D " shape accurately to locate, and gear die cavity 111 is provided with annular cooling water road.Dynamic model die cavity 114 is located at dynamic model cavity plate 125 and accurately locates, and dynamic model die cavity 125 is provided with cooling water channel.Dynamic model cavity plate 125, dynamic model backing plate 123, square iron 122, moving clamping plate 121 use lock-screws 117 are fixedly connected with.Ejecting structure comprises ejector retainner plate 119, ejector retainner plate supporting plate 118, release link 115, spring 116 and push rod 120, and ejector retainner plate is fixedly connected with by lock-screw with ejector retainner plate supporting plate.Push rod 120 is positioned at the below of helical gear cavity 127 through dynamic model backing plate 123, dynamic model die cavity 114.Gear cavity plate 128 is connected with the contiguous block 110 that is fixedly connected on release link head with lock-screw 109 by release link 115 with ejector retainner plate 119, release link 115 bottom stage become " D " type to be positioned on ejector retainner plate 119, be convenient to lock-screw 109, contiguous block 110 is fixed in release link 115, spring 116 one end that are contained in release link 115 are adjacent in dynamic model cavity plate 125, and the other end is adjacent on ejector retainner plate 119.
Be arranged in the cover half die cavity 114 of cover half cavity plate 125, the dynamic model die cavity of the gear die cavity 111 of gear cavity plate 128, dynamic model cavity plate 125 114 becomes mutually step to be closely socketed successively and forms helical gear cavity 127.
The course of work of the present embodiment:
As shown in Figures 1 to 3, the top board 133 use pressing plates of plastic beveled wheel mold cover half part are fixed on the panel of the motionless side of injection machine, and moving clamping plate 121 use pressing plates are fixed on injection machine drawer at movable side panel.During injection moulding: under mould closure state, injection molding machine nozzle 102 stretches into the plastics of the charging aperture injection molten condition of sprue bush 102, and enter by being arranged in the runner 104 of the pressing plate 106 in cover half cavity plate 131 feed channel 105 that is arranged on cover half die cavity 107, the plastics of feed channel 105 enter helical gear cavity 111 by being arranged on the discharging opening of cover half die cavity 107, through cooling, the plastics of molten condition condense into solid shape plastic beveled wheel 202, injection mo(u)lding.
During the demoulding: injection moulding machine mould open structure retreats injection machine drawer at movable side, owing to being located at the nylon plug 108 of cover half cavity plate 131, by connecting rod 113, be fixed in dynamic model cavity plate 125, stripper plate 132 is opened under the effect of spring 136 in advance with cover half cavity plate 131, utilizes and draws material pin 103 to pull out feed channel stub bar; Continue die sinking, by the arm-tie 130 being fixed in cover half cavity plate 131 and gear cavity plate 128, pull cover half cavity plate 131, because pulling cover half cavity plate 131, arm-tie 130 drives two part actions: (1), the limit screw 135 and the screw draw bar 129 that are arranged on cover half part reach the limit of, cover half top board 133 is separated with stripper plate 132, sprue 201 stub bars come off, and stub bar can be by manipulator or manually taken out.(2), the nylon plug 108 that is arranged on gear cavity plate 128 loosens under certain pulling force, gear cavity plate 128 is left dynamic model cavity plate 125 until distance screws 124 reaches the limit of, while ejector retainner plate 119, ejector retainner plate supporting plate 118, push rod 120 synchronizing moving under the pulling that is fixed on the contiguous block 110 in release link 115, at these process push rod 120 heads, withstand on all the time plastic beveled wheel 202 bottoms, make plastic beveled wheel 202 throw off dynamic model die cavity 114 with gear cavity plate 128 synchronizing movings until distance screws 124 reaches the limit of.While ejecting, the push rod 301 of injection machine ejecting structure withstands on ejector retainner plate supporting plate 118 through moving clamping plate 121 and drives push rod 120 to withstand on plastic beveled wheel 202 bottom surfaces to be done to keep straight on mobile, synchronous plastic beveled wheel 202 moves forward along being arranged on the 111 inner surface helix feature rotations of gear die cavity, in these process plastic beveled wheel 202 bottom surfaces and push rod 120 end faces, produce sideslip, until the complete out-of-gear die cavity 111 of plastic beveled wheel 202, now plastic beveled wheel 202 can freely fall down or manipulator taking-up.
After ejecting product, injection machine push rod 301 retreats, and is being linked under the effect of the spring 116 in release link 115, and gear cavity plate 128 and ejecting structure are got back to initial position, and injection machine drawer at movable side moves forward, and completes matched moulds, starts next circulation.
The foregoing is only preferably embodiment of the present invention, be not used for limiting practical range of the present invention, the equivalence of in every case doing in protection scope of the present invention changes and modifies, and all should think and fall in protection scope of the present invention.
Claims (5)
1. a plastic beveled wheel injection mo(u)lding demolding structure, it comprises cover half part and dynamic model part, the top board of described cover half part, stripper plate, in cover half cavity plate, under with guide pillar, be fixedly linked successively, cover half cavity plate center is provided with cover half die cavity, described cover half die cavity is pushed down and is fixed in cover half cavity plate by pressing plate, the gear cavity plate that it is characterized in that described dynamic model part, dynamic model cavity plate is fixedly linked with guide pillar, dynamic model cavity plate, dynamic model backing plate, square iron, moving clamping plate is fixedly linked with lock-screw, ejector retainner plate is fixedly connected with lock-screw with ejector retainner plate supporting plate and release link is installed and dynamic model is partly slidably matched, the arm-tie being fixed in cover half cavity plate and gear cavity plate forms demoulding assembly with the ejecting structure that is arranged on dynamic model part, be arranged in the cover half die cavity of cover half cavity plate, the dynamic model die cavity of the gear die cavity of gear cavity plate, dynamic model cavity plate becomes mutually step be closely socketed successively and form helical gear cavity, the running gate system that is arranged on cover half part communicates with described helical gear cavity, during the demoulding, under the effect of described demoulding assembly, the plastic beveled wheel of injection mo(u)lding moves forward and depanning along being arranged on the rotation of gear type inner cavity surface helix feature, obtains plastic beveled wheel finished product.
2. plastic beveled wheel injection mo(u)lding demolding structure according to claim 1, it is characterized in that: described demoulding assembly comprises the arm-tie being fixed in cover half cavity plate and gear cavity plate and the ejecting structure that is arranged on dynamic model part, ejecting structure comprises and is arranged on the ejector retainner plate of dynamic model part and the ejector retainner plate base plate that ejector retainner plate is fixedly linked, be fixed on the push rod of ejector retainner plate and ejector retainner plate supporting plate, release link, be linked in the spring in release link, described release link is through dynamic model backing plate, dynamic model cavity plate, gear cavity plate is fixedly connected with the contiguous block being located in gear cavity plate, described push rod is through dynamic model backing plate, dynamic model die cavity is positioned at the below of helical gear cavity.
3. plastic beveled wheel injection mo(u)lding demolding structure according to claim 1, it is characterized in that: described gear die cavity with lock-screw fixedly close-fitting in gear cavity plate, described gear die cavity becomes " D " shape to be accurately positioned in gear cavity plate, and described gear die cavity is provided with annular water route.
4. plastic beveled wheel injection mo(u)lding demolding structure according to claim 1 and 2, is characterized in that: described plastic beveled wheel helical form shape molding is at gear type inner cavity surface.
5. plastic beveled wheel injection mo(u)lding demolding structure according to claim 1, it is characterized in that: described cover half is partly provided with limit screw, screw draw bar, spring, the screw-internal thread fit of described limit screw external screw thread and screw draw bar, described spring is arranged between stripper plate and cover half cavity plate and is linked on screw draw bar; The nylon plug being arranged in cover half cavity plate is fixed in dynamic model cavity plate by connecting rod; Between gear cavity plate and dynamic model cavity plate, be fixed with distance screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733404.7A CN103660189A (en) | 2013-12-26 | 2013-12-26 | Demoulding structure for plastic helical gear injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733404.7A CN103660189A (en) | 2013-12-26 | 2013-12-26 | Demoulding structure for plastic helical gear injection molding |
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| Publication Number | Publication Date |
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| CN103660189A true CN103660189A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310733404.7A Pending CN103660189A (en) | 2013-12-26 | 2013-12-26 | Demoulding structure for plastic helical gear injection molding |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103991183A (en) * | 2014-05-06 | 2014-08-20 | 昆山市大久电子有限公司 | Mold suitable for rotary demolding of workpiece having inclined thread structure |
| CN104015318A (en) * | 2014-06-04 | 2014-09-03 | 常州工学院 | Plastic bevel gear secondary demolding device |
| CN105643888A (en) * | 2015-12-30 | 2016-06-08 | 优力精密塑胶（苏州工业园区）有限公司 | Segmented release injection mold and machining method thereof |
| CN107443557A (en) * | 2017-03-29 | 2017-12-08 | 广州众顶建筑工程科技有限公司 | A kind of firm bridge equipment |
| CN108637678A (en) * | 2017-01-03 | 2018-10-12 | 东莞理工学院 | A kind of tooth shaft component assembly mechanism convenient for gear socket |
| CN109435169A (en) * | 2018-12-28 | 2019-03-08 | 大连銮艺精密模塑制造有限公司 | Gear die equipped with multijaw cast gate |
| CN110394952A (en) * | 2019-08-06 | 2019-11-01 | 常州工学院 | A kind of plastic helical gear stripper apparatus and method playing the rotation of apical organ secondary cavity |
| CN111037853A (en) * | 2019-12-27 | 2020-04-21 | 东莞科威医疗器械有限公司 | Injection molding mold for spiral flow guide inner core of oxygenator |
| CN111037852A (en) * | 2019-12-27 | 2020-04-21 | 东莞科威医疗器械有限公司 | Oxygenator spiral flow guide inner core mold and jacking type demolding structure |
| CN114131839A (en) * | 2021-10-25 | 2022-03-04 | 宁波力松注塑科技有限公司 | Plastic injection mold of injection molding machine |
| CN114248403A (en) * | 2021-12-17 | 2022-03-29 | 浙江工商职业技术学院 | Die and forming method |
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| CN201913782U (en) * | 2010-12-09 | 2011-08-03 | 浙江德玛克机械有限公司 | Die cavity cooling device for embryo injection die |
| CN202480344U (en) * | 2012-03-31 | 2012-10-10 | 李海周 | Secondary ejection mechanism and helical gear forming mold comprising the same |
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Patent Citations (2)
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| CN201913782U (en) * | 2010-12-09 | 2011-08-03 | 浙江德玛克机械有限公司 | Die cavity cooling device for embryo injection die |
| CN202480344U (en) * | 2012-03-31 | 2012-10-10 | 李海周 | Secondary ejection mechanism and helical gear forming mold comprising the same |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103991183A (en) * | 2014-05-06 | 2014-08-20 | 昆山市大久电子有限公司 | Mold suitable for rotary demolding of workpiece having inclined thread structure |
| CN103991183B (en) * | 2014-05-06 | 2017-02-08 | 昆山一邦泰汽车零部件制造有限公司 | Mold suitable for rotary demolding of workpiece having inclined thread structure |
| CN104015318A (en) * | 2014-06-04 | 2014-09-03 | 常州工学院 | Plastic bevel gear secondary demolding device |
| CN104015318B (en) * | 2014-06-04 | 2016-05-18 | 常州工学院 | Plastic beveled wheel secondary stripper apparatus |
| CN105643888A (en) * | 2015-12-30 | 2016-06-08 | 优力精密塑胶（苏州工业园区）有限公司 | Segmented release injection mold and machining method thereof |
| CN108637678B (en) * | 2017-01-03 | 2020-03-24 | 东莞理工学院 | Gear shaft part assembling mechanism convenient for gear sleeve joint |
| CN108637678A (en) * | 2017-01-03 | 2018-10-12 | 东莞理工学院 | A kind of tooth shaft component assembly mechanism convenient for gear socket |
| CN107443557B (en) * | 2017-03-29 | 2019-03-19 | 新疆北新路桥集团股份有限公司 | A kind of firm bridge equipment |
| CN107443557A (en) * | 2017-03-29 | 2017-12-08 | 广州众顶建筑工程科技有限公司 | A kind of firm bridge equipment |
| CN109435169A (en) * | 2018-12-28 | 2019-03-08 | 大连銮艺精密模塑制造有限公司 | Gear die equipped with multijaw cast gate |
| CN110394952A (en) * | 2019-08-06 | 2019-11-01 | 常州工学院 | A kind of plastic helical gear stripper apparatus and method playing the rotation of apical organ secondary cavity |
| CN111037853A (en) * | 2019-12-27 | 2020-04-21 | 东莞科威医疗器械有限公司 | Injection molding mold for spiral flow guide inner core of oxygenator |
| CN111037852A (en) * | 2019-12-27 | 2020-04-21 | 东莞科威医疗器械有限公司 | Oxygenator spiral flow guide inner core mold and jacking type demolding structure |
| CN114131839A (en) * | 2021-10-25 | 2022-03-04 | 宁波力松注塑科技有限公司 | Plastic injection mold of injection molding machine |
| CN114131839B (en) * | 2021-10-25 | 2023-08-01 | 宁波力松注塑科技有限公司 | Plastic injection mold of injection molding machine |
| CN114248403A (en) * | 2021-12-17 | 2022-03-29 | 浙江工商职业技术学院 | Die and forming method |
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Application publication date: 20140326 |