US20040107551A1 - Indented female blow-molded connector - Google Patents
Indented female blow-molded connector Download PDFInfo
- Publication number
- US20040107551A1 US20040107551A1 US10/314,672 US31467202A US2004107551A1 US 20040107551 A1 US20040107551 A1 US 20040107551A1 US 31467202 A US31467202 A US 31467202A US 2004107551 A1 US2004107551 A1 US 2004107551A1
- Authority
- US
- United States
- Prior art keywords
- wall
- connector
- rib
- opening
- 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.)
- Abandoned
Links
Images
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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/54—Moulds for undercut articles
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/54—Moulds for undercut articles
- B29C2049/542—Moulds for undercut articles having means to facilitate the removal of the blow moulded articles
- B29C2049/547—Moulds for undercut articles having means to facilitate the removal of the blow moulded articles which are self actuated during the removing of the blow moulded articles, e.g. the means are spring loaded or flexible
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/727—Fastening elements
- B29L2031/7278—Couplings, connectors, nipples
-
- 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
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
- Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
- Y10T24/45602—Receiving member includes either movable connection between interlocking components or variable configuration cavity
- Y10T24/45775—Receiving member includes either movable connection between interlocking components or variable configuration cavity having resiliently biased interlocking component or segment
- Y10T24/45822—Partially blocking separate, nonresilient, access opening of cavity
Definitions
- the present invention relates generally to the molding of plastic parts, and specifically relates to a device for blow-molding a thermoplastic into the shape of an indented female connector.
- Blow molding of plastics to form hollow shapes such as bottles, containers or the like is well known. Some shapes are difficult to mold into a hollow container with a blow molding process.
- An example of a shape that is difficult to mold is an indented female connector having a set of internal ribs for engaging with a male connector. Accordingly, there is a need for an improved device for molding an indented female connector as part of a hollow object.
- the present invention meets the above-described need by providing a male mold component that can be inserted into the mold to form the indented female connector in the container and that can be removed without damaging the ribs formed in the indented connector.
- FIG. 1 is a sectional side elevational view of the male mold component positioned inside a portion of the object to be molded;
- FIG. 2 is a sectional side elevational view of the indented female connector
- FIG. 3 is a sectional side elevational view showing the mold component in broken lines as it is being removed from the indented female connector.
- FIGS. 1 - 3 a portion of a hollow molded object 10 is shown in a sectional side view.
- the portion shown is an indented female connector 16 that is formed in the side of the hollow object 10 .
- the hollow object 10 is formed from thermoplastic materials by blow molding techniques known to those of ordinary skill in the art.
- a male mold component 13 is inserted into the mold to form the indented female connector 16 shown. Once the female connector 16 has been molded, the male mold component 13 is removed from the mold as described hereinafter.
- the indented female connector 16 is surrounded by a surface 19 .
- the surface 19 is formed on an upper wall 20 having a thickness indicated at 21 .
- the surface 19 is disposed substantially perpendicular to a set of inside walls 25 extending inward toward a rib 28 that is integrally formed in the inside walls during the molding process.
- the rib 28 may be formed on some or all of the inside walls 25 .
- the rib 28 may be formed in an annular configuration.
- the rib 28 may extend only along the opposed major lengths of the rectangle.
- the rib 28 may extend from the inner wall inward at an angle of approximately forty-five degrees. As shown in FIG. 2, there is a pair of ribs 28 facing each other and extending inward at approximately a forty-five degree angle from an axis 31 parallel to the inside wall 25 . With reference to the orientation of FIG. 2, the side walls 25 may continue downward and join by means of a section 34 disposed at the bottom of the connector 16 . Although the section 34 is curved in the drawings, the section 34 may be formed in other shapes as well.
- a flex section having a dimension 37 .
- the distance along the rib is a locking surface 40
- the portion below the rib 28 is a receiving surface 43 .
- the opening between opposed ribs 28 has a dimension 44 that will be discussed below.
- the male mold component 13 is removed from the indented female connector 16 by pulling it in a direction substantially perpendicular to top surface 19 .
- the opening for removing the male mold component 13 is narrowest at the point between the ribs 28 . This distance is also indicated in FIG. 2 as dimension 44 .
- the ribs 28 have to bend away from each other in order to accommodate the large diameter 60 of the lower portion 63 of the male mold component 13 .
Abstract
A device and method for forming an indented female connector where the dimension of the indented female connector provides for removing a male molding component without damaging a set of internal ribs formed inside the female connector.
Description
- The present invention relates generally to the molding of plastic parts, and specifically relates to a device for blow-molding a thermoplastic into the shape of an indented female connector.
- Blow molding of plastics to form hollow shapes such as bottles, containers or the like is well known. Some shapes are difficult to mold into a hollow container with a blow molding process. An example of a shape that is difficult to mold is an indented female connector having a set of internal ribs for engaging with a male connector. Accordingly, there is a need for an improved device for molding an indented female connector as part of a hollow object.
- The present invention meets the above-described need by providing a male mold component that can be inserted into the mold to form the indented female connector in the container and that can be removed without damaging the ribs formed in the indented connector.
- The invention is illustrated in the drawings in which like reference characters designate the same or similar parts throughout the figures of which:
- FIG. 1 is a sectional side elevational view of the male mold component positioned inside a portion of the object to be molded;
- FIG. 2 is a sectional side elevational view of the indented female connector; and,
- FIG. 3 is a sectional side elevational view showing the mold component in broken lines as it is being removed from the indented female connector.
- Referring generally to FIGS.1-3 and initially to FIG. 1, a portion of a hollow molded
object 10 is shown in a sectional side view. The portion shown is an indentedfemale connector 16 that is formed in the side of thehollow object 10. Thehollow object 10 is formed from thermoplastic materials by blow molding techniques known to those of ordinary skill in the art. Amale mold component 13 is inserted into the mold to form the indentedfemale connector 16 shown. Once thefemale connector 16 has been molded, themale mold component 13 is removed from the mold as described hereinafter. - Referring to FIG. 2, the indented
female connector 16 is surrounded by asurface 19. Thesurface 19 is formed on anupper wall 20 having a thickness indicated at 21. Thesurface 19 is disposed substantially perpendicular to a set ofinside walls 25 extending inward toward arib 28 that is integrally formed in the inside walls during the molding process. Depending on the shape of the opening, therib 28 may be formed on some or all of theinside walls 25. For a circular opening, therib 28 may be formed in an annular configuration. For a rectangular opening therib 28 may extend only along the opposed major lengths of the rectangle. - The
rib 28 may extend from the inner wall inward at an angle of approximately forty-five degrees. As shown in FIG. 2, there is a pair ofribs 28 facing each other and extending inward at approximately a forty-five degree angle from anaxis 31 parallel to theinside wall 25. With reference to the orientation of FIG. 2, theside walls 25 may continue downward and join by means of asection 34 disposed at the bottom of theconnector 16. Although thesection 34 is curved in the drawings, thesection 34 may be formed in other shapes as well. - Between the top of
surface 19 and therib 28 is a flex section having adimension 37. The distance along the rib is alocking surface 40, and the portion below therib 28 is a receivingsurface 43. The opening betweenopposed ribs 28 has adimension 44 that will be discussed below. - Turning to FIG. 3, after the blow molding process is completed, the
male mold component 13 is removed from the indentedfemale connector 16 by pulling it in a direction substantially perpendicular totop surface 19. The opening for removing themale mold component 13 is narrowest at the point between theribs 28. This distance is also indicated in FIG. 2 asdimension 44. When themale mold component 13 is removed, theribs 28 have to bend away from each other in order to accommodate thelarge diameter 60 of thelower portion 63 of themale mold component 13. - Returning to FIG. 2, it has been discovered that in order to form the
ribs 28 and to successfully remove themale mold component 13 without damaging theribs 28, a certain relationship betweenthickness 21 and thedimension 37 applies. Ifdimension 37 is greater thanthickness 21, themold 13 can be removed withoutdamaging ribs 28. Ifdimension 37 is less than or equal tothickness 21, theribs 28 are typically destroyed when themold 13 is removed. - While the invention has been described in connection with certain embodiments, it is not intended to limit the scope of the invention to the particular forms set forth, but, on the contrary, it is intended to cover such alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. An indented female blow-molded connector, comprising:
a first wall having a top surface and a thickness, the first wall surrounding an opening;
at least one inner wall extending substantially perpendicular to the first wall and bordering the opening;
at least one rib formed in the inner wall;
a bottom wall connected to the inner wall;
wherein the distance from the rib to the top surface is greater than the thickness of the first wall.
2. The connector of claim 1 , wherein the opening is round.
3. The connector of claim 2 , wherein the rib is annular-shaped.
4. The connector of claim 1 , wherein the opening is rectangular.
5. The connector of claim 4 , wherein the at least one rib comprises a pair of opposed ribs disposed on opposite sides of the rectangular opening.
6. The connector of claim 1 , wherein the rib is formed from a pair of walls converging at an approximately forty-five degree angle relative to the inner wall.
7. The connector of claim 1 , wherein the bottom wall is curved.
8. A method of forming an indented female blow-molded connector, comprising:
providing a mold having two halves for forming an indented female connector having at least one inner wall extending substantially perpendicular to the first wall, at least one rib formed in the inner wall; a bottom wall connected to the inner wall; wherein the distance from the rib to the top surface is greater than the thickness of the first wall;
providing a male mold component having a complementary shape to the female connector;
opening the mold;
injecting a balloon of material between the mold halves;
inserting the male mold component;
closing the mold;
forcing air into the balloon of material such that the material is pushed into the mold cavities;
opening the mold; and,
removing the male mold component from the indented female connector.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/314,672 US20040107551A1 (en) | 2002-12-09 | 2002-12-09 | Indented female blow-molded connector |
US10/991,703 US20050070167A1 (en) | 2002-12-09 | 2004-11-18 | Indented female blow-molded connector |
US10/996,950 US7275289B2 (en) | 2002-12-09 | 2004-11-24 | Indented female blow-molded connector and male connector and method |
US11/031,646 US7234780B2 (en) | 2002-12-09 | 2005-01-07 | Indented female blow-molded connector and male connector and method |
US11/893,272 US7526841B2 (en) | 2002-12-09 | 2007-08-15 | Indented female blow-molded connector and male connector and method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/314,672 US20040107551A1 (en) | 2002-12-09 | 2002-12-09 | Indented female blow-molded connector |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/991,703 Division US20050070167A1 (en) | 2002-12-09 | 2004-11-18 | Indented female blow-molded connector |
US10/996,950 Continuation-In-Part US7275289B2 (en) | 2002-12-09 | 2004-11-24 | Indented female blow-molded connector and male connector and method |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040107551A1 true US20040107551A1 (en) | 2004-06-10 |
Family
ID=32468532
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/314,672 Abandoned US20040107551A1 (en) | 2002-12-09 | 2002-12-09 | Indented female blow-molded connector |
US10/991,703 Abandoned US20050070167A1 (en) | 2002-12-09 | 2004-11-18 | Indented female blow-molded connector |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/991,703 Abandoned US20050070167A1 (en) | 2002-12-09 | 2004-11-18 | Indented female blow-molded connector |
Country Status (1)
Country | Link |
---|---|
US (2) | US20040107551A1 (en) |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2116444A (en) * | 1937-12-06 | 1938-05-03 | Maier Louis | Combination door bumper and holder |
US2946612A (en) * | 1958-02-24 | 1960-07-26 | Amerock Corp | Self-alining catch |
US3395642A (en) * | 1964-01-10 | 1968-08-06 | Hercules Inc | Explosive container |
US3674295A (en) * | 1969-05-10 | 1972-07-04 | Pietro Padovani | Pressure operated fastening means for containers |
US4312614A (en) * | 1978-11-21 | 1982-01-26 | Itw Limited | Security fastener |
US4611964A (en) * | 1985-02-01 | 1986-09-16 | Schlein Seymour N | Anchor nail fastener |
US4716633A (en) * | 1986-02-17 | 1988-01-05 | Itw De France | Fixing device, especially for panels |
US4803036A (en) * | 1986-08-30 | 1989-02-07 | Toyo Seikan Kaisha, Ltd. | Process for blow-molding and heat setting of polyester hollow formed body |
US4811855A (en) * | 1987-06-09 | 1989-03-14 | Ab Akerlund & Rausing | Container closure |
US5203051A (en) * | 1991-12-06 | 1993-04-20 | K.K. Aoyama Seisakusho | Grommet and method of inserting grommet |
US6132154A (en) * | 1998-07-30 | 2000-10-17 | Easter; Robert Leslie | Instrument panel retention fixing device |
US6145173A (en) * | 1998-02-09 | 2000-11-14 | Nifco Inc. | Article attaching device |
US6324731B1 (en) * | 1998-02-05 | 2001-12-04 | Illinois Tool Works Inc. | Isolator fan fastener |
US6412153B1 (en) * | 2000-08-23 | 2002-07-02 | International Business Machines Corporation | Device for attaching at least two pieces of material |
US6601271B1 (en) * | 1999-09-14 | 2003-08-05 | Sunrise Medical Hhg Inc. | System for mounting a wheel on a bed |
US6719365B2 (en) * | 2002-05-21 | 2004-04-13 | Hawngil Lee | Integrated changeable insert molding for an automobile and manufacturing method thereof |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3140329A (en) * | 1962-05-22 | 1964-07-07 | Beacon Plastics Corp | Attachment means |
US5193961A (en) * | 1992-02-12 | 1993-03-16 | Illinois Tool Works Inc. | Pin and grommet |
US5490966A (en) * | 1994-11-02 | 1996-02-13 | The Procter & Gamble Company | Method for stripping open ended bellows part from injection mold |
US6325962B1 (en) * | 1998-12-29 | 2001-12-04 | Visteon Global Technologies, Inc. | Method of manufacturing a blow molded hinge assembly |
-
2002
- 2002-12-09 US US10/314,672 patent/US20040107551A1/en not_active Abandoned
-
2004
- 2004-11-18 US US10/991,703 patent/US20050070167A1/en not_active Abandoned
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2116444A (en) * | 1937-12-06 | 1938-05-03 | Maier Louis | Combination door bumper and holder |
US2946612A (en) * | 1958-02-24 | 1960-07-26 | Amerock Corp | Self-alining catch |
US3395642A (en) * | 1964-01-10 | 1968-08-06 | Hercules Inc | Explosive container |
US3674295A (en) * | 1969-05-10 | 1972-07-04 | Pietro Padovani | Pressure operated fastening means for containers |
US4312614A (en) * | 1978-11-21 | 1982-01-26 | Itw Limited | Security fastener |
US4611964A (en) * | 1985-02-01 | 1986-09-16 | Schlein Seymour N | Anchor nail fastener |
US4716633A (en) * | 1986-02-17 | 1988-01-05 | Itw De France | Fixing device, especially for panels |
US4803036A (en) * | 1986-08-30 | 1989-02-07 | Toyo Seikan Kaisha, Ltd. | Process for blow-molding and heat setting of polyester hollow formed body |
US4811855A (en) * | 1987-06-09 | 1989-03-14 | Ab Akerlund & Rausing | Container closure |
US5203051A (en) * | 1991-12-06 | 1993-04-20 | K.K. Aoyama Seisakusho | Grommet and method of inserting grommet |
US6324731B1 (en) * | 1998-02-05 | 2001-12-04 | Illinois Tool Works Inc. | Isolator fan fastener |
US6145173A (en) * | 1998-02-09 | 2000-11-14 | Nifco Inc. | Article attaching device |
US6132154A (en) * | 1998-07-30 | 2000-10-17 | Easter; Robert Leslie | Instrument panel retention fixing device |
US6601271B1 (en) * | 1999-09-14 | 2003-08-05 | Sunrise Medical Hhg Inc. | System for mounting a wheel on a bed |
US6412153B1 (en) * | 2000-08-23 | 2002-07-02 | International Business Machines Corporation | Device for attaching at least two pieces of material |
US6719365B2 (en) * | 2002-05-21 | 2004-04-13 | Hawngil Lee | Integrated changeable insert molding for an automobile and manufacturing method thereof |
Also Published As
Publication number | Publication date |
---|---|
US20050070167A1 (en) | 2005-03-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CONFER PLASTICS, INC., NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIPNIARSKI, DAVID J.;REEL/FRAME:013564/0158 Effective date: 20021204 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |