CA1283385C - Blow molding method and article - Google Patents
Blow molding method and articleInfo
- Publication number
- CA1283385C CA1283385C CA000543198A CA543198A CA1283385C CA 1283385 C CA1283385 C CA 1283385C CA 000543198 A CA000543198 A CA 000543198A CA 543198 A CA543198 A CA 543198A CA 1283385 C CA1283385 C CA 1283385C
- Authority
- CA
- Canada
- Prior art keywords
- lug
- groove
- plastic
- mold
- mounting
- 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.)
- Expired - Lifetime
Links
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/50—Arrangement of reservoir
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Manufacturing & Machinery (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Blow molded plastic articles such as solvent containers for use in motor vehicles are often equipped with lugs for mounting the articles in the vehicles. In order to avoid problems when removing the articles from the mold, the usual practice is to mold the lugs separately, incorporate the lugs into the mold prior to blow molding, and to blow mold the articles with the lugs on the parting line of the mold, i.e. the line where the mold halves meet to define the mold cavity. This limits the design of the blow molded articles, and severely slows down production, since each molding cycle must be interrupted to insert the lugs. A solution to the problem is to blow mold the articles with grooves for receiving separately molded mounting lugs. Thus, there is no need to reduce production speed, and the grooves can be provided at locations other than the parting line.
Blow molded plastic articles such as solvent containers for use in motor vehicles are often equipped with lugs for mounting the articles in the vehicles. In order to avoid problems when removing the articles from the mold, the usual practice is to mold the lugs separately, incorporate the lugs into the mold prior to blow molding, and to blow mold the articles with the lugs on the parting line of the mold, i.e. the line where the mold halves meet to define the mold cavity. This limits the design of the blow molded articles, and severely slows down production, since each molding cycle must be interrupted to insert the lugs. A solution to the problem is to blow mold the articles with grooves for receiving separately molded mounting lugs. Thus, there is no need to reduce production speed, and the grooves can be provided at locations other than the parting line.
Description
`` ''IZ833~3S
This invention relates to a method of producing a plastic article and to a plastic article produced by such method.
; ` More specifically, the invention relates to a method of blow molding a plastic article of the type including a lug for mounting the article in a fixed position or location, and to the article thus produced.
The invention was originally intended to faciLitate the production of solvent containers for use in motor vehicles.
- However, it will be readily apparent that the invention can be 10 used for producing other molded plastic articles such as dash assemblies or instrument panels, or molded duct components. For ; the sake of simplicity, the following description is limited to the production of a solvent container.
In general, solvent containers of the type used in motor vehicles are produced by blow molding the body of the container in a mold includ1ng two mold halves, which together define a mold cavity having the shape of the finished container. When a mounting bracket or lug is to be incorporated in the container, the lug is molded separately, and then placed on one of the mold ~20 halv s before each blow molding operation. In other words, the molding cycle must be~interrupted to insert each bracket or lug, which severely slows down machine operation. Any bracket or lug molded during a blow molding operation must be located on the parting line of the mold. Otherwise, it would be difficult if "
not impossible to remove the molded article from the mold following blow molding.
3~ ' ....
~, '.
~ ' ' ' ' ' ~ ' ~ , ,.
~333~3~
An object of the present invention is to overcome the above-identified problems by providing a relatively simple method of produclng a plastic article which permits the incorporation of a mounting bracket or lug at any location on the article, and which permits relatively rapid molding of articles.
Anothex object of the invention is to provide a hollow, ; blow molded plastic article incorporating a groove in the outer surface thereof, and a separate mounting lug for insertion into the groove.
Accordingly, the present invention relates to a method of producing a plastic article of the type including a mounting lug comprising the steps of blow molding the article in a mold containing a projection for defining groove means in an ~; outer surface of the article; separately molding the mounting lug;
and attaching the mounting lug to the groove means of the blow ~i moIded article.
~ J
The invention also relates to a plastic article for mounting in a fixed location comprising hollow, blow molded body ~ means; groove means in an outer surface of said body means; and -~ 20 ~separate lug means insertable in said groove means for securing said body means in a fixed location.
~` The invention will be described in greater detail with - reference to the accompanying drawing, which illustrates a preferred embodiment of the invention, and wherein:
Figure 1 is a perspective view from one end and one side ofa solvent container in accordance with the present invention;
This invention relates to a method of producing a plastic article and to a plastic article produced by such method.
; ` More specifically, the invention relates to a method of blow molding a plastic article of the type including a lug for mounting the article in a fixed position or location, and to the article thus produced.
The invention was originally intended to faciLitate the production of solvent containers for use in motor vehicles.
- However, it will be readily apparent that the invention can be 10 used for producing other molded plastic articles such as dash assemblies or instrument panels, or molded duct components. For ; the sake of simplicity, the following description is limited to the production of a solvent container.
In general, solvent containers of the type used in motor vehicles are produced by blow molding the body of the container in a mold includ1ng two mold halves, which together define a mold cavity having the shape of the finished container. When a mounting bracket or lug is to be incorporated in the container, the lug is molded separately, and then placed on one of the mold ~20 halv s before each blow molding operation. In other words, the molding cycle must be~interrupted to insert each bracket or lug, which severely slows down machine operation. Any bracket or lug molded during a blow molding operation must be located on the parting line of the mold. Otherwise, it would be difficult if "
not impossible to remove the molded article from the mold following blow molding.
3~ ' ....
~, '.
~ ' ' ' ' ' ~ ' ~ , ,.
~333~3~
An object of the present invention is to overcome the above-identified problems by providing a relatively simple method of produclng a plastic article which permits the incorporation of a mounting bracket or lug at any location on the article, and which permits relatively rapid molding of articles.
Anothex object of the invention is to provide a hollow, ; blow molded plastic article incorporating a groove in the outer surface thereof, and a separate mounting lug for insertion into the groove.
Accordingly, the present invention relates to a method of producing a plastic article of the type including a mounting lug comprising the steps of blow molding the article in a mold containing a projection for defining groove means in an ~; outer surface of the article; separately molding the mounting lug;
and attaching the mounting lug to the groove means of the blow ~i moIded article.
~ J
The invention also relates to a plastic article for mounting in a fixed location comprising hollow, blow molded body ~ means; groove means in an outer surface of said body means; and -~ 20 ~separate lug means insertable in said groove means for securing said body means in a fixed location.
~` The invention will be described in greater detail with - reference to the accompanying drawing, which illustrates a preferred embodiment of the invention, and wherein:
Figure 1 is a perspective view from one end and one side ofa solvent container in accordance with the present invention;
- 2 -' ' :
, ' : :
~Z~333E~
Figure 2 is a perspective view of the container of Fig. 1 from the other end and a second side;
Figure 3 is an exploded perspèctive view of a bracket and a portion of the container of Figs. 1 and 2;
5Figure 4 is a cross-sectional view of the bracket of Fig. 3 attached to the container.
Referring to the drawing, a solvent container of the type produced in accordance with the present invention includes a molded plastic body 1, which is provided on one side with a generally semicylindrical recess 2 (Fig. 2) for receiving a mounting post (not shown). A hollow, cylindrical projection 3 extends outwardly from a second side of the body 1. A hole is cut in the projection
, ' : :
~Z~333E~
Figure 2 is a perspective view of the container of Fig. 1 from the other end and a second side;
Figure 3 is an exploded perspèctive view of a bracket and a portion of the container of Figs. 1 and 2;
5Figure 4 is a cross-sectional view of the bracket of Fig. 3 attached to the container.
Referring to the drawing, a solvent container of the type produced in accordance with the present invention includes a molded plastic body 1, which is provided on one side with a generally semicylindrical recess 2 (Fig. 2) for receiving a mounting post (not shown). A hollow, cylindrical projection 3 extends outwardly from a second side of the body 1. A hole is cut in the projection
3 for introducing solvent into the containex. A lug 5 extends outwardly from one end of the body 1 for securing the container in lS a fixed position. The lug 5 is molded along the parting line of the mold, i.e. at the location where the two halves of the mold ~1~meet to form a mold cavity. The parting line of the mold defines ~;~
a parting line 6 on the body 1 of the container. The parting line 6~, which is a thin ridge of plastic, extends roughly diagonally 20 ~ across the ends 8~and 9 of the body 1, and along two diametrically opposed edges 10 and 11 of the body 1.
~; During normal blow molding operations, the location of the lug 5 is dictated by the parting line of the mold. Any lug 5 or other projection must be molded on such parting line. Otherwise, it is very difficult if not impossible to remove the finished ;, -~
.
,.,,.,.. ,. - : , ~ :
'' ~:
"~ :
~83~38S
container from mold, particularly when the lug 5 is long.
The above-identified problem is overcome by the mounting bracket structure and method of the present invention. In accordance with the present invention a mounting bracket generally indicated at 14 is molded separately in an injection molding step, and the body 1 of the container is blow molded with a groove 15 for receiving the bracket 14.
The bracket 14 includes an elongated, planar body 16 with an opening 18 in the outer end thereof for receiving a bolt or screw (not shown). The bracket 14 is generally L-shaped in cross section and includes a base 19 integral with the body and connected thereto by triangular gussets 20. The sides 22 of the base 19 extend outwardly beyond the sides of the body 16, and ~; one end 23 of the base 19 extends outwardly beyond the plane of ~; 15 ~the body 16. Thus, when the base 19 is slid into the groove 15, the edges or flanges 22 and 23 slide under and are retained by a shoulder 25 extending around the periphery of the groove 15.
A triangular depression 26, with a vertical outer edge 28 is provided in the base of the groove 15 for receiving a triangular projection ~9 on the base 19 of the bracket 14. Thus, once the bracket is ~ slid into place in the groove 15, the bracket cannot readily be ;~ removed, i.e. the depression 26 and projection 29 define a locking device.
By providing a groove in the body 1 of the blow molded container, and a separately molded bracket 14, the bracket can be :~
~ - 4 -'~' -,' .
~,, ,,. :, . . ..
, . ~ : -.;
'' . '-' ' ~" ' , .
'`' ~
^"-` ~Z83~
.
located at virtually any position on the body l. It is no longer necessary to mold the bracket on the parting line of the body 1, or to slow down production while a separately molded bracket ~: is inserted into a mold half before effecting each blow molding S operation.
. .
.
'~ ~ 10 :;
~ 15 ., :
:; .
, .;~ 20 :: :
,~ :
~ 25 ' _ 5 _ .
:
a parting line 6 on the body 1 of the container. The parting line 6~, which is a thin ridge of plastic, extends roughly diagonally 20 ~ across the ends 8~and 9 of the body 1, and along two diametrically opposed edges 10 and 11 of the body 1.
~; During normal blow molding operations, the location of the lug 5 is dictated by the parting line of the mold. Any lug 5 or other projection must be molded on such parting line. Otherwise, it is very difficult if not impossible to remove the finished ;, -~
.
,.,,.,.. ,. - : , ~ :
'' ~:
"~ :
~83~38S
container from mold, particularly when the lug 5 is long.
The above-identified problem is overcome by the mounting bracket structure and method of the present invention. In accordance with the present invention a mounting bracket generally indicated at 14 is molded separately in an injection molding step, and the body 1 of the container is blow molded with a groove 15 for receiving the bracket 14.
The bracket 14 includes an elongated, planar body 16 with an opening 18 in the outer end thereof for receiving a bolt or screw (not shown). The bracket 14 is generally L-shaped in cross section and includes a base 19 integral with the body and connected thereto by triangular gussets 20. The sides 22 of the base 19 extend outwardly beyond the sides of the body 16, and ~; one end 23 of the base 19 extends outwardly beyond the plane of ~; 15 ~the body 16. Thus, when the base 19 is slid into the groove 15, the edges or flanges 22 and 23 slide under and are retained by a shoulder 25 extending around the periphery of the groove 15.
A triangular depression 26, with a vertical outer edge 28 is provided in the base of the groove 15 for receiving a triangular projection ~9 on the base 19 of the bracket 14. Thus, once the bracket is ~ slid into place in the groove 15, the bracket cannot readily be ;~ removed, i.e. the depression 26 and projection 29 define a locking device.
By providing a groove in the body 1 of the blow molded container, and a separately molded bracket 14, the bracket can be :~
~ - 4 -'~' -,' .
~,, ,,. :, . . ..
, . ~ : -.;
'' . '-' ' ~" ' , .
'`' ~
^"-` ~Z83~
.
located at virtually any position on the body l. It is no longer necessary to mold the bracket on the parting line of the body 1, or to slow down production while a separately molded bracket ~: is inserted into a mold half before effecting each blow molding S operation.
. .
.
'~ ~ 10 :;
~ 15 ., :
:; .
, .;~ 20 :: :
,~ :
~ 25 ' _ 5 _ .
:
Claims (7)
EXCLUSIVE PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS
FOLLOWS:
1. A method of producing a plastic article of the type including a plastic mounting lug comprising the steps of blow molding the article in a mold containing a projection for defining groove means in an outer surface of the article;
separately molding the plastic mounting lug; and attaching the mounting lug to the groove means of the blow molded article.
separately molding the plastic mounting lug; and attaching the mounting lug to the groove means of the blow molded article.
2. A method of producing a plastic container for mounting in a motor vehicle comprising the steps of blow molding the container in a mold containing a projection for defining groove means in an outer surface of the container;
separately molding a plastic lug for mounting the container in a motor vehicle; and attaching the lug to the groove means of the blow molded container.
separately molding a plastic lug for mounting the container in a motor vehicle; and attaching the lug to the groove means of the blow molded container.
3. A plastic article for mounting in a fixed location comprising hollow, blow molded plastic body means; groove means in an outer surface of said body means; separate plastic lug means insertable in said groove means for securing said body means in a fixed location; a recess in said groove means;
and a projection on said lug means complementary to said recess for locking said lug means in said groove means.
and a projection on said lug means complementary to said recess for locking said lug means in said groove means.
4. An article according to claim 3, including shoulder means on at least two sides of said groove means; and flange means on said lug means, whereby, when said lug means in slid into said groove means, the lug means is retained thereby.
5. A plastic solvent container for mounting in a motor vehicle comprising hollow, blow molded plastic body means; groove means in an outer surface of said body means;
separate plastic mounting lug means insertable in said groove means for securing said body means in the motor vehicle; a recess in said groove means; and a projection on said lug means complementary to said recess for locking said lug means in said groove means.
separate plastic mounting lug means insertable in said groove means for securing said body means in the motor vehicle; a recess in said groove means; and a projection on said lug means complementary to said recess for locking said lug means in said groove means.
6. A container according to claim 5, including shoulder means on at least two sides of said groove means; and flange means on said lug means, whereby, when said lug means is slid into groove means, the lug means is retained thereby.
7. A container according to claim 5 or 6, wherein said lug means includes an elongated planar body; and a base perpendicular to said body defining said flange means for sliding engagement with said groove means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000543198A CA1283385C (en) | 1987-07-28 | 1987-07-28 | Blow molding method and article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000543198A CA1283385C (en) | 1987-07-28 | 1987-07-28 | Blow molding method and article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1283385C true CA1283385C (en) | 1991-04-23 |
Family
ID=4136163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000543198A Expired - Lifetime CA1283385C (en) | 1987-07-28 | 1987-07-28 | Blow molding method and article |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1283385C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013020802A1 (en) * | 2011-08-09 | 2013-02-14 | Bayerische Motoren Werke Aktiengesellschaft | Securing of a blow-mould component |
| CN106915062A (en) * | 2017-03-31 | 2017-07-04 | 上汽通用五菱汽车股份有限公司 | A kind of air conditioning wind pipe forming method and air conditioning wind pipe |
-
1987
- 1987-07-28 CA CA000543198A patent/CA1283385C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013020802A1 (en) * | 2011-08-09 | 2013-02-14 | Bayerische Motoren Werke Aktiengesellschaft | Securing of a blow-mould component |
| CN106915062A (en) * | 2017-03-31 | 2017-07-04 | 上汽通用五菱汽车股份有限公司 | A kind of air conditioning wind pipe forming method and air conditioning wind pipe |
| CN106915062B (en) * | 2017-03-31 | 2023-11-17 | 上汽通用五菱汽车股份有限公司 | Air conditioner air duct forming method and air conditioner air duct |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2054157A1 (en) | Gas-assisted injection molding with a carpet layer | |
| CA2082242A1 (en) | Method of making a molded applique product | |
| US20020089078A1 (en) | Method for injection-molding a propeller fan | |
| CA1283385C (en) | Blow molding method and article | |
| JPH0197771A (en) | Door outer handle for automobile | |
| GB2273456A (en) | Providing a smooth transition between the relatively rotatable parts of a blow- out vent | |
| GB2218944A (en) | Moulded vehicle trim with bright insert | |
| EP1248701A1 (en) | Tube product with molded on bracket | |
| US6274072B1 (en) | Method of manufacturing plastic moldings using a water soluble core | |
| JPH0263048B2 (en) | ||
| EP0736245A1 (en) | Protective sheath made of plastic, particularly for hedge trimmer blades, and method for manufacturing it | |
| JPS5915330Y2 (en) | Motorcycle engine key | |
| JP2565236Y2 (en) | Decorative plug with positioning projection | |
| JPH075709U (en) | Fixing structure of insert die in molding die | |
| JPH10166387A (en) | Manufacture of hollow molded article, and its molding die device | |
| JPS5850035Y2 (en) | key | |
| JPH0452026Y2 (en) | ||
| JP3206156B2 (en) | Resin molding | |
| JP2780416B2 (en) | Vehicle resin molded article and method of manufacturing the same | |
| JPS55160602A (en) | Wheel cover for car | |
| JP2677142B2 (en) | Core pin structure of injection mold | |
| JPS6139530Y2 (en) | ||
| JPH0159894B2 (en) | ||
| KR950001411Y1 (en) | Hinge structure of tachometer | |
| JPS6392433A (en) | Hollow molding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |