WO2006073035A1 - 中心に円形穴を有する円形樹脂成形品及び該円形樹脂成形品を成形する方法及び装置 - Google Patents
中心に円形穴を有する円形樹脂成形品及び該円形樹脂成形品を成形する方法及び装置 Download PDFInfo
- Publication number
- WO2006073035A1 WO2006073035A1 PCT/JP2005/022269 JP2005022269W WO2006073035A1 WO 2006073035 A1 WO2006073035 A1 WO 2006073035A1 JP 2005022269 W JP2005022269 W JP 2005022269W WO 2006073035 A1 WO2006073035 A1 WO 2006073035A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circular
- resin molded
- molded product
- mold
- center pin
- Prior art date
Links
- 239000011347 resin Substances 0.000 title claims abstract description 136
- 229920005989 resin Polymers 0.000 title claims abstract description 136
- 238000000034 method Methods 0.000 title claims description 20
- 238000000465 moulding Methods 0.000 title claims description 12
- 238000002347 injection Methods 0.000 claims abstract description 34
- 239000007924 injection Substances 0.000 claims abstract description 34
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims description 39
- 239000004519 grease Substances 0.000 claims description 14
- 235000013372 meat Nutrition 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/21—Circular sheet or circular blank
Definitions
- Circular resin molded product having a circular hole in the center, and method and apparatus for molding the circular resin molded product
- the present invention relates to a circular resin molded product having a circular hole in the center formed by injecting molten resin from an injection gate into a mold, cooling and solidifying, and the circular resin molded product
- the present invention relates to a method and an apparatus for molding a material.
- Gears and turntables made of resin are formed by injection molding (injection molding). This is a method of obtaining a molded product by injecting a hot melted resin material into a mold and cooling and solidifying it.
- injection molding injection molding
- This is a method of obtaining a molded product by injecting a hot melted resin material into a mold and cooling and solidifying it.
- a molded product has a circular shape having a circular hole in the center (ie, an annular shape) like a gear or a turntable, roundness and flatness of the surface are required.
- FIG. 16 is a schematic diagram for explaining the injection of resin with a six-point gate.
- a multi-point gate is one in which a plurality of gates for injecting resin is used
- FIG. 16 is a schematic diagram for explaining the injection of resin with a six-point gate.
- (A) is a plan view, Respectively show longitudinal sectional views. It is possible to improve the roundness of a molded product by simultaneously injecting an annular molded product at multiple points on a concentric circle.
- Fig. 17 (A) is a graph of the roundness measured by 6-point gate injection
- Fig. 17 (B) is a graph of the roundness measured by 8-point gate injection when glass-filled resin is injected.
- the injection gate group is divided into two groups, and each group is shifted in phase angle with respect to each other, and two different circles are used. It is known to arrange on the circumference (see Patent Document 1), or to arrange sub-gates (see Patent Document 2) that further branch off the force of each of the main gates connected by only a plurality of main gates.
- FIGS. 18A and 18B are schematic views for explaining the injection by such a film gate.
- FIG. 18A is a plan view
- FIG. 18B is a longitudinal sectional view
- This technique is uniform in the circumferential direction and no weld lines are generated.
- this film gate also fills the grease in the position corresponding to the center hole of the resin molded product, it is necessary to cut the unnecessary part and finish it as the center hole. .
- the center hole is used as a sliding guide, and since a shaft is inserted, additional steps such as cutting off the inner thread are required.
- the burr generated on the inner peripheral surface of the circular hole reduces the coaxiality when, for example, a shaft is press-fitted into the circular hole like a turntable. Also, in the case of a reduction gear that slides and rotates with respect to the shaft inserted in the circular hole, sliding friction increases and noise is generated, or noise enters the reducer as foreign matter. It will be.
- Patent Document 1 Japanese Patent Laid-Open No. 6-278163
- Patent Document 2 Japanese Patent Laid-Open No. 2002-292678
- the present invention solves such problems and improves roundness and surface flatness by preventing the occurrence of weld lines when injection molding a circular resin molded product,
- the purpose is to improve the material yield by minimizing some of the occurrences, and to form a ridge that does not require additional processes such as cutting burrs after forming!
- a circular resin molded product having a circular hole in the center of the present invention is formed by pouring molten resin from an injection gate into a mold, cooling and solidifying.
- This resin molded product is composed of a circumferential sleeve formed by a cylindrical gap formed in a mold around a center pin that is further extended in the axial direction from the corresponding position. It is formed by a mold around a center pin having an outer diameter corresponding to the inner diameter of the circular hole.
- Circumferential gate marks are formed toward the axial direction of the circular resin molded article at a predetermined radial position on either the front or back surface of the resin molded article.
- the method of molding a circular resin molded product having a circular hole in the center of the present invention is formed by injecting molten resin from an injection gate into a mold, cooling and solidifying.
- a circular resin molded product is formed in the mold around a center pin having an outer diameter corresponding to the inner diameter of the circular hole, and the center pin extends further in the axial direction than a position corresponding to the circular resin molded product.
- the injection gate is constituted by a circumferential sleeve formed by a cylindrical gap formed in the mold around the center pin in the extended position. The resin is injected from the configured injection gate.
- an apparatus for molding a circular resin molded product having a circular hole in the center of the present invention is a mold for injecting molten resin from an injection gate, cooling and solidifying it.
- This mold forms a round resin molded product around a center pin having an outer diameter corresponding to the inner diameter of the circular hole.
- the injection gate is formed in the mold around the center pin of the extended position at a position extended in the axial direction from the position corresponding to the circular resin molded product. It is constituted by a circumferential sleeve formed by a cylindrical gap that is formed, and the resin is injected from an injection gate constituted by this circumferential sleeve.
- the circumferential gate mark is formed on the surface of the resin molded product in the axial direction of the resin molded product.
- FIG. 1 is a diagram for explaining a first example of an embodiment of the present invention, showing a state in which molten resin is injected into a mold.
- FIG. 2 is an enlarged view of the sleeve gate in FIG. 1.
- A is a cross-sectional view of the sleeve gate cut along line XX shown in (), and (B) is a vertical cross-sectional view. ing.
- FIG. 3 is a diagram illustrating an annular resin molded article manufactured by the method of the present invention, wherein (A) is a gear with a flat surface, and (B) is a hollow provided on the surface to release meat. Shows the gear
- FIG. 4 is a view showing a state where a mold is opened.
- FIG. 5 is a view showing a state where the mold is further opened and the sleeve gate is separated.
- FIG. 6 is a view showing a state where the mold is fully opened.
- FIG. 7 is a view for explaining a second example of the embodiment of the present invention showing a case where the inner diameter of the mounting hole of the annular resin molded product is small, showing a state where the resin is injected.
- FIG. 8 is a diagram for explaining a second example of an embodiment of the present invention, showing a state in which a sleeve gate is cut from a resin molded product.
- FIG. 9 is a graph showing the roundness measured for a resin molded product molded according to the present invention.
- FIG. 10 is a view illustrating another example of the annular resin molded article manufactured by the method of the present invention, which is different from FIG. 3.
- FIG. 11 is a view showing a state in which molten resin is injected into a mold in order to form the annular circular resin molded product illustrated in FIG.
- FIG. 12 is an enlarged view of the sleeve gate portion in FIG. 11, (A) is a view for explaining the positional relationship in the radial direction of the molded product, and (B) is a longitudinal sectional view. .
- FIG. 13 is a view showing a state where the mold (Q) and the mold (R) are opened.
- FIG. 14 is a view showing a state where the mold is further opened, the mold (Q) is separated from the mold (P), and the mold (S) is separated from the mold (R).
- FIG. 15 is a diagram for explaining a state in which the sleeve gate falls with the mold (R) force separated.
- FIG. 16 Schematic diagram for explaining the oil injection by the 6-point gate of the prior art, (A) is a plan view
- (B) is a longitudinal sectional view.
- FIG. 17 (A) is a graph of roundness measured by 6-point gate injection, and (B) is a graph obtained by measuring roundness by 8-point gate injection when glass-filled resin is injected. .
- FIG. 18 is a schematic diagram for explaining injection by a conventional film gate, (A) is a plan view, (B) is a longitudinal sectional view, and (C) is an enlarged longitudinal sectional view showing an injection portion. It is.
- FIG. 1 is a view showing a state where molten resin is injected into a mold in order to form an annular circular resin molded product having a mounting hole (circular hole) at the center of a gear or a turntable. .
- the resin molded product is formed around a circular rod-shaped center pin in a mold (P) that is separable.
- the outer diameter of the center pin corresponds to the inner diameter of the mounting hole of the finished resin molded product.
- the sleeve gate which is a feature of the present invention and serves as a gate for injecting the resin into the resin molded product, is formed between the inner peripheral surface of the mold (Q) and the outer peripheral surface of the center pin extended to the vicinity of the runner. It is formed. While the center pin shape is formed in a circular rod shape, the inner peripheral surface of the mold (Q) is also formed in a circular shape, and the gap formed between them is formed in a cylindrical shape.
- the runner shown in the figure is a grease introduction part up to the sleeve gate.
- FIG. 2 is an enlarged view of the sleeve gate portion in FIG. 1.
- (A) is a cross-sectional view of the sleeve gate cut along line XX shown in FIG. 1, and (B) is a vertical cross section. The figure is shown.
- the present invention The sleeve gate is generally cylindrical with a circumferential cross section (ring shape), and its tip is concentric with the surface of the annular molded product in the axial direction of the mounting hole. Force that can be connected from the side to any position on the outer peripheral side
- the sleeve gate illustrated in Fig. 2 is the innermost peripheral side of the annular molded product (position adjacent to the inner peripheral surface) shown as a circular gate in the figure. And connected to the surface of the molded product.
- the sleeve gate By forming a taper in the center pin and the mold, and making the sleeve gate thinner as it approaches the resin molded product, it is possible to improve the removal when the product is completed.
- a taper is desirable for materials with relatively small shrinkage, such as polycarbonate, but is particularly desirable for greased materials with large shrinkage, such as glass-filled nylon or glassless nylon.
- the sleeve gate has the thinnest tip portion so that the sleeve gate and the resin molded product can be cut in such a manner that they are torn off at the tip portion in a later process.
- FIG. 3 is a diagram illustrating an annular resin molded article manufactured by the method of the present invention.
- (A) shows a gear with a flat surface, and (B) shows a depression on the surface.
- Each of the gears with meat relief provided is shown.
- (B) it is possible to reduce the material cost by reducing the material cost by providing ribs on the surface to form a recess for escaping meat. Since the hollow for escaping the meat does not reach the center in the axial direction of the molded product, the injected grease flows sufficiently evenly in the radial direction.
- (A) shows an example in which the surface is flattened without ribs in order to allow the grease to flow more evenly.
- the gate trace is merely a circumferential shape.
- This gate trace is the inner peripheral side of the mounting hole (position adjacent to the inner peripheral surface). Thus, it is formed toward the axial direction of the annular molded product.
- burrs are generated only in the axial direction of the annular molded product, so it is possible to remove the burr by simply removing the molded product from the mold.
- the inner peripheral surface of the hole can be finished sufficiently smoothly.
- FIG. 4 is a diagram showing a state where the mold is opened. After the resin injected into the integrally assembled mold is solidified, the mold (P) is separated from the mold (Q) as shown in FIG. By the separation of the mold, the resin molded product and the sleeve gate are cut so that they are torn off at the connecting portion between them. As a result, nodling occurs in the axial direction of the annular molded product. This is as described above.
- FIG. 5 is a view showing a state where the mold is further opened and the sleeve gate is separated.
- the sleeve gate is taken out from the mold (Q).
- FIG. 6 is a view showing a state where the mold is fully opened.
- the resin molded product is separated from the mold (P) by protruding the protrusion pin from the mold (P).
- the mold (R) and the mold (S) are integrated, the circular rod-shaped convex portion provided in the mold (S) entering the circular concave portion provided in the mold (R).
- the sleeve gate that had been picked up by the grease that has entered the surrounding gap is separated from the die (R) and die (S) as shown in Fig. 6. , Will fall away from the mold (R).
- the resin molded product is completed through the above steps.
- the trace of the gate into which the grease has been injected is not present on the inner peripheral surface side of the central hole described with reference to FIG.
- the trace of the gate into which the grease has been injected is not present on the inner peripheral surface side of the central hole described with reference to FIG.
- it is formed on either surface of the front and back surfaces of the annular resin molded product. This is where there is no problem, but there is no problem in use as a resin molded product.
- burr protruding on the surface is a problem, it can be solved by lowering the surface on which the gate mark is generated in the axial direction from the surface of the annular molded product.
- the gate mark is provided in a circumferential (ring-shaped) continuous shape around the mounting hole, it is possible to prevent the occurrence of weld lines during molding, and the roundness of the resin molded product Improve
- FIG. 9 is a graph showing the roundness measured for the resin molded product molded in this way. It can be seen that this is superior to the resin molded product with the multipoint gate shown in FIG. In addition, after the resin is solidified and finished as a product, the solidified resin in the gate should be discarded. Compared to the multi-point gate, the number of gates is only one in the center, so the material yield. Is also improved.
- FIGS. 7 and 8 show only the injected grease and the center pin, omitting the illustration of the mold and the like, and FIG. 7 shows the state in which the grease has been injected.
- Figure 8 shows the sleeve gate cut from a resin molded product. Yes.
- the example shown in the figure is a case where the inner diameter of the mounting hole of the annular resin molded product is small, and therefore the outer diameter of the center pin is small.
- only the shape of the sleeve gate is different. Yes.
- the center pin extends only to the vicinity of the tip of the sleeve gate.
- the sleeve gate has a hollow cylindrical shape only near the tip connected to the resin molded product, and the other part is formed into a solid circular rod shape.
- the gate portion into which the grease is injected has a circumferential shape as in the above example, and functions in the same manner as in the above example.
- FIG. 10 is a view showing an example of an annular resin molded article manufactured by the method of the present invention, which is another example different from FIG.
- the gate trace only has a circumferential shape.
- This gate trace is formed in an annular shape that is concentric with the mounting hole at a substantially central portion in the radial direction on the surface of the annular molded product. It is formed toward the axial direction of the product.
- the outer peripheral surface and the inner peripheral surface can be finished almost equally precisely by injecting the fat at the substantially central portion in the radial direction as in the case of the resin molded product illustrated in FIG. .
- the annular molding is performed from the relatively outer peripheral surface in the radial direction. Can be injected in the axial direction of the product.
- the sleeve gate position can be an arbitrary concentric position in the radial direction depending on whether the inner peripheral surface or the outer peripheral surface of the resin molded product is finished more precisely or equivalently.
- the power to inject the grease on the inner peripheral surface side is provided.
- the diameter of the sleeve gate to be finally discarded becomes smaller, so the cost of the resin material is reduced.
- burr occurs in the axial direction of the annular molded product, if it occurs near the mounting hole on the inner peripheral side, it may be caught in the shaft inserted into the mounting hole, so the inner peripheral side force is also released. Place In some cases, it may be advantageous to inject the greaves in place.
- FIG. 11 is a view showing a state in which molten resin is injected into the mold in order to form the annular circular resin molded article exemplified in FIG.
- FIG. 12 is an enlarged view of the sleeve gate portion in FIG. 11, (A) is a view for explaining the positional relationship in the radial direction of the molded product, and (B) is a longitudinal sectional view. .
- the resin molded product is formed around a circular rod-shaped molded product center pin in a mold (P) that is separable.
- the center pin is divided into a molded product center pin having a relatively small outer diameter corresponding to the inner diameter of the mounting hole of the finished resin molded product, and a sleeve gate center pin having a larger diameter.
- the sleeve gate which is a feature of the present invention and serves as a gate for injecting the resin into the resin molded product, is formed between the inner peripheral surface of the mold (Q) and the outer peripheral surface of the sleeve gate center pin. While the sleeve gate center pin shape is formed in a circular rod shape, the inner peripheral surface of the mold (Q) is also configured in a circular shape, and the gap formed between them is configured in a cylindrical shape. .
- the lower end surface of the sleeve gate center pin is in contact with the upper end surface of the molded product center pin at the upper surface position of the resin molded product.
- the runner shown in the figure is the oil introduction part up to the sleeve gate.
- FIG. 13 is a view showing a state where the mold (Q) and the mold (R) are opened. After the resin injected into the integrally combined mold is solidified, the mold (R) is separated from the mold (Q) as shown in FIG. By this separation of the mold, the resin molded product and the sleeve gate are cut so that they are torn apart at the connecting portion between them. As described above, the burr is generated only in the axial direction of the annular molded product.
- FIG. 14 shows a state where the mold is further opened, the mold (Q) is separated from the mold (P), and the mold (R) force mold (S) is separated.
- the resin molded product is separated from the mold (P) by protruding the protruding pin from the mold (P).
- the sleeve gate that had been picked up by the mold is dropped away from the mold (R) when the mold (R) and the mold (S) are separated as shown in FIG. become.
- the resin molded product is completed through the above steps.
- the gate trace into which the grease has been injected has an annular shape at a position on the outer peripheral side in the radial direction from the innermost peripheral side (position adjacent to the inner peripheral surface) of the annular molded product.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006550639A JPWO2006073035A1 (ja) | 2005-01-07 | 2005-12-05 | 中心に円形穴を有する円形樹脂成形品及び該円形樹脂成形品を成形する方法及び装置 |
US10/599,648 US20070200279A1 (en) | 2005-01-07 | 2005-12-05 | Circular Resin-Molded Product Having Circular Center Hole And Method And Apparatus For Molding The Same |
US12/211,309 US20090011168A1 (en) | 2005-01-07 | 2008-09-16 | Circular resin-molded product having circular center hole and method and apparatus for molding the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-001983 | 2005-01-07 | ||
JP2005001983 | 2005-01-07 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/211,309 Division US20090011168A1 (en) | 2005-01-07 | 2008-09-16 | Circular resin-molded product having circular center hole and method and apparatus for molding the same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006073035A1 true WO2006073035A1 (ja) | 2006-07-13 |
Family
ID=36647520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/022269 WO2006073035A1 (ja) | 2005-01-07 | 2005-12-05 | 中心に円形穴を有する円形樹脂成形品及び該円形樹脂成形品を成形する方法及び装置 |
Country Status (4)
Country | Link |
---|---|
US (2) | US20070200279A1 (ja) |
JP (1) | JPWO2006073035A1 (ja) |
CN (1) | CN101098776A (ja) |
WO (1) | WO2006073035A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011068062A (ja) * | 2009-09-28 | 2011-04-07 | Nakanishi Metal Works Co Ltd | 円環状樹脂製品の射出成形用金型並びに円環状樹脂製品の製造方法及び該製造方法により製造された円環状樹脂製品 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011056601A1 (de) | 2011-12-19 | 2013-06-20 | Voss Automotive Gmbh | Hohlzylindrisches Schraubteil und Verfahren zu seiner Herstellung |
ES2827212T3 (es) * | 2012-04-23 | 2021-05-20 | Abb Schweiz Ag | Método para moldear por inyección piezas polares termoplásticas y molde de ejecución del mismo |
CN103480847A (zh) * | 2013-07-11 | 2014-01-01 | 上海三展新材料科技有限公司 | 一种金属注射成形工艺中的棘轮产品浇口结构和专用装置 |
JP6617451B2 (ja) * | 2015-07-03 | 2019-12-11 | 中西金属工業株式会社 | 芯金入り樹脂歯車の製造方法 |
JP7303440B2 (ja) * | 2019-10-21 | 2023-07-05 | 中西金属工業株式会社 | 円環状樹脂部を含む成形品の製造方法 |
Citations (3)
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JPH10259789A (ja) * | 1997-03-19 | 1998-09-29 | Enplas Corp | ポンプ用インペラ−及びその成形方法 |
JP2001293751A (ja) * | 2000-04-13 | 2001-10-23 | Takaoka Seiko Kk | 射出成形方法及び装置 |
JP2001353753A (ja) * | 2000-06-15 | 2001-12-25 | Enplas Corp | 射出成形用金型および射出成形品の製造方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63276518A (ja) * | 1987-05-08 | 1988-11-14 | Sumitomo Heavy Ind Ltd | 射出成形用金型 |
JPH01127722U (ja) * | 1988-02-22 | 1989-08-31 | ||
JPH0753393B2 (ja) * | 1988-04-15 | 1995-06-07 | ポリプラスチックス株式会社 | 円筒状又は円柱状成形品の射出成形用金型及び成形品 |
JPH0729349B2 (ja) * | 1992-04-08 | 1995-04-05 | 株式会社テクノプラス | ディスク成形機におけるゲートカット構造 |
JPH07119103A (ja) * | 1993-10-22 | 1995-05-09 | Yamaha Oofunato Seizo Kk | レール締結用絶縁カラーおよびその射出成形用金型 |
JP4063113B2 (ja) * | 2003-03-20 | 2008-03-19 | 三菱電機株式会社 | 成形金型 |
-
2005
- 2005-12-05 US US10/599,648 patent/US20070200279A1/en not_active Abandoned
- 2005-12-05 CN CNA2005800461187A patent/CN101098776A/zh active Pending
- 2005-12-05 JP JP2006550639A patent/JPWO2006073035A1/ja active Pending
- 2005-12-05 WO PCT/JP2005/022269 patent/WO2006073035A1/ja not_active Application Discontinuation
-
2008
- 2008-09-16 US US12/211,309 patent/US20090011168A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10259789A (ja) * | 1997-03-19 | 1998-09-29 | Enplas Corp | ポンプ用インペラ−及びその成形方法 |
JP2001293751A (ja) * | 2000-04-13 | 2001-10-23 | Takaoka Seiko Kk | 射出成形方法及び装置 |
JP2001353753A (ja) * | 2000-06-15 | 2001-12-25 | Enplas Corp | 射出成形用金型および射出成形品の製造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011068062A (ja) * | 2009-09-28 | 2011-04-07 | Nakanishi Metal Works Co Ltd | 円環状樹脂製品の射出成形用金型並びに円環状樹脂製品の製造方法及び該製造方法により製造された円環状樹脂製品 |
Also Published As
Publication number | Publication date |
---|---|
US20090011168A1 (en) | 2009-01-08 |
JPWO2006073035A1 (ja) | 2008-06-12 |
CN101098776A (zh) | 2008-01-02 |
US20070200279A1 (en) | 2007-08-30 |
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