CA2268328A1 - Process and device for encapsulating the edges of thin-walled plates - Google Patents
Process and device for encapsulating the edges of thin-walled plates Download PDFInfo
- Publication number
- CA2268328A1 CA2268328A1 CA 2268328 CA2268328A CA2268328A1 CA 2268328 A1 CA2268328 A1 CA 2268328A1 CA 2268328 CA2268328 CA 2268328 CA 2268328 A CA2268328 A CA 2268328A CA 2268328 A1 CA2268328 A1 CA 2268328A1
- Authority
- CA
- Canada
- Prior art keywords
- plate
- edges
- mold halves
- pressure
- sealing cushion
- 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
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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14434—Coating brittle material, e.g. glass
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Finishing Walls (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
In a method of encapsulating the edges of thin-walled plates (1), in particular made of breakable materials, such as glass or ceramic, by means of an apparatus having two mold halves (3, 4) which can be moved toward each other and between which the edges are securely held, the two mold halves (3, 4) are firstly moved toward each other under essentially maximum bonding pressure, the edges of the plate (1) being taken up but not loaded, and, after reaching the maximum bonding pressure, an internal sealing cushion (8) is pressed against the plate (1) with a pressure corresponding to the material of the plate (1).
As a result, the maximum bonding pressure of the two mold halves (3, 4) can be hundreds of tonnes, but the plate (1) is nevertheless not damaged. On the other hand, by appropriate setting of the pressure of the sealing cushion (8), oozing out of the injected plastic from the mold cavity (5) can be reliably avoided.
As a result, the maximum bonding pressure of the two mold halves (3, 4) can be hundreds of tonnes, but the plate (1) is nevertheless not damaged. On the other hand, by appropriate setting of the pressure of the sealing cushion (8), oozing out of the injected plastic from the mold cavity (5) can be reliably avoided.
Description
PROCESS AND DEVICE FOR ENCAPSULATING
THE EDGES OF THIN-WALLED PLATES
The invention relates to a method of encapsulating the edges of thin-walled plates, in particular made of breakable materials, such as glass or ceramic, by means of an apparatus having two mold halves which can be moved toward each other and between which the edges are securely held. The 'invention also concerns an apparatus for carrying out this method.
In various areas of technology, thin-walled plates have to be provided with an edge of plastic.
Mentioned just by way of example are sliding windows for chest freezers or else automobile windows. In particular if the plates consist of breakable materials, it is difficult to carry out the encapsulation. This is so because the plates break if the bonding pressure of the two mold halves which can be moved toward each other is chosen to be too great, whereas the encapsulating plastic oozes out between the two mold halves if the bonding pressure is too low.
To avoid this disadvantage, it has already been proposed to provide one mold half with a spring-loaded displaceable support of plastic which is softer than the glass plate to be encapsulated. The glass plate is firstly placed onto this support and then held between la the other mold half and the support. The main disadvantage in this case is that it is difficult or impossible for the spring pressure of the support to be adapted to the material of the plate to be encapsulated. Furthermore, the material of the support must be very soft.
THE EDGES OF THIN-WALLED PLATES
The invention relates to a method of encapsulating the edges of thin-walled plates, in particular made of breakable materials, such as glass or ceramic, by means of an apparatus having two mold halves which can be moved toward each other and between which the edges are securely held. The 'invention also concerns an apparatus for carrying out this method.
In various areas of technology, thin-walled plates have to be provided with an edge of plastic.
Mentioned just by way of example are sliding windows for chest freezers or else automobile windows. In particular if the plates consist of breakable materials, it is difficult to carry out the encapsulation. This is so because the plates break if the bonding pressure of the two mold halves which can be moved toward each other is chosen to be too great, whereas the encapsulating plastic oozes out between the two mold halves if the bonding pressure is too low.
To avoid this disadvantage, it has already been proposed to provide one mold half with a spring-loaded displaceable support of plastic which is softer than the glass plate to be encapsulated. The glass plate is firstly placed onto this support and then held between la the other mold half and the support. The main disadvantage in this case is that it is difficult or impossible for the spring pressure of the support to be adapted to the material of the plate to be encapsulated. Furthermore, the material of the support must be very soft.
The invention is aimed at providing a method of encapsulating the edges of thin-walled plates in which any damage to the plates is reliably avoided, but nevertheless adaptation to the material of the plates to be encapsulated has the effect that an oozing out of the injected plastic from the mold cavity is not possible. This is achieved by the fact that the two mold halves are firstly moved toward each other under essentially maximum bonding pressure, the edges of the plate being taken up but not loaded, and that, after reaching the maximum bonding pressure, an internal sealing cushion is pressed against the plate with a pressure corresponding to the material of the plate.
When carrying out the method according to the invention, the maximum bonding pressure of the two mold halves can be hundreds of tonnes, but the plate is nevertheless not damaged. On the other hand, by appropriate setting of the pressure of the sealing cushion, oozing out of the injected plastic from the mold cavity can be reliably avoided.
An apparatus for carrying out the method according to the invention has two mold halves which can be moved toward each other, and is distinguished in that a sealing cushion which can be pressed with controllable pressure against the plate is arranged displaceably within the one mold half.
In the case of an expedient exemplary embodiment of the invention, suckers are arranged on one mold half for positioning the plate before it is taken up by the mold halves or the sealing cushion.
In the case of an apparatus according to the invention, it is by no means required that the material of the sealing cushion is softer than the material of the plate. It is therefore possible, according to the invention, for the sealing cushion to consist of metal.
The invention is explained in more detail below with reference to the drawings. In these, Figure 1 shows in a diagrammatic view the end product of a method according to the invention, namely a glass plate with a plastic edge. Figure 2 represents an apparatus according to the invention in section and in a simplified form.
According to Figure 1, a convex glass plate 1 is provided with an edge 2, which has been produced in an apparatus according to Figure 2 by applying the method according to the invention.
The apparatus according to Figure 2 has two mold halves 3 and 4, which can be moved toward each other and, in the mutually abutting state, enclose a mold cavity 5, which corresponds to the shape of the edge 2. The mold cavity 5 is connected to a diagrammatically indicated injection-molding unit via a runner 6.
Arranged displaceably within the mold half 3 is a sealing cushion 8, which can be moved independently of the mold halves 3 and 4. For positioning the glass plate 1, the apparatus according to the invention also has suckers 9, one of which is indicated by its outline.
If an edge 2 of the glass plate 1 is to be encapsulated, said glass plate is inserted between the moved-apart mold halves 3, 4 and positioned or held by means of the suckers 9. The two mold halves 3, 4 are subsequently moved toward each other and pressed against each other with high pressure.
As can be seen from the drawing, in which the state in which the mold parts 3, 4 are pressed against each other is represented, the glass plate 1 is not loaded by the pressure of the mold halves 3, 4, with the result that this pressure can be very high, irrespective of the material of the glass plate 1, and may be several hundred tonnes.
The sealing cushion 8 is in this case approximately in a position as indicated in Figure 2 by dashed lines.
The sealing cushion 8 is then displaced within the mold half 3 against the glass plate 1 and pressed against the latter. The mold cavity 5 is completely closed as a result.
The force or the pressure with which the sealing cushion 8 bears against the glass plate 1 can be adjusted very accurately and adapted to the material of the glass plate 1. This virtually rules out any risk of breakage for the glass plate 1. Nevertheless, the mold cavity 5 can be sealed off inwardly so well that the material then injected by the injection-molding unit 7 via the runner 6 does not ooze out inwardly.
Numerous modifications are possible within the scope of the invention. For instance, the sealing cushion 8 could also be arranged movably within the mold half 4. The invention is also not in any way restricted to the encapsulation of convex glass plates, but can rather be used for encapsulating the edges of all thin-walled plates.
When carrying out the method according to the invention, the maximum bonding pressure of the two mold halves can be hundreds of tonnes, but the plate is nevertheless not damaged. On the other hand, by appropriate setting of the pressure of the sealing cushion, oozing out of the injected plastic from the mold cavity can be reliably avoided.
An apparatus for carrying out the method according to the invention has two mold halves which can be moved toward each other, and is distinguished in that a sealing cushion which can be pressed with controllable pressure against the plate is arranged displaceably within the one mold half.
In the case of an expedient exemplary embodiment of the invention, suckers are arranged on one mold half for positioning the plate before it is taken up by the mold halves or the sealing cushion.
In the case of an apparatus according to the invention, it is by no means required that the material of the sealing cushion is softer than the material of the plate. It is therefore possible, according to the invention, for the sealing cushion to consist of metal.
The invention is explained in more detail below with reference to the drawings. In these, Figure 1 shows in a diagrammatic view the end product of a method according to the invention, namely a glass plate with a plastic edge. Figure 2 represents an apparatus according to the invention in section and in a simplified form.
According to Figure 1, a convex glass plate 1 is provided with an edge 2, which has been produced in an apparatus according to Figure 2 by applying the method according to the invention.
The apparatus according to Figure 2 has two mold halves 3 and 4, which can be moved toward each other and, in the mutually abutting state, enclose a mold cavity 5, which corresponds to the shape of the edge 2. The mold cavity 5 is connected to a diagrammatically indicated injection-molding unit via a runner 6.
Arranged displaceably within the mold half 3 is a sealing cushion 8, which can be moved independently of the mold halves 3 and 4. For positioning the glass plate 1, the apparatus according to the invention also has suckers 9, one of which is indicated by its outline.
If an edge 2 of the glass plate 1 is to be encapsulated, said glass plate is inserted between the moved-apart mold halves 3, 4 and positioned or held by means of the suckers 9. The two mold halves 3, 4 are subsequently moved toward each other and pressed against each other with high pressure.
As can be seen from the drawing, in which the state in which the mold parts 3, 4 are pressed against each other is represented, the glass plate 1 is not loaded by the pressure of the mold halves 3, 4, with the result that this pressure can be very high, irrespective of the material of the glass plate 1, and may be several hundred tonnes.
The sealing cushion 8 is in this case approximately in a position as indicated in Figure 2 by dashed lines.
The sealing cushion 8 is then displaced within the mold half 3 against the glass plate 1 and pressed against the latter. The mold cavity 5 is completely closed as a result.
The force or the pressure with which the sealing cushion 8 bears against the glass plate 1 can be adjusted very accurately and adapted to the material of the glass plate 1. This virtually rules out any risk of breakage for the glass plate 1. Nevertheless, the mold cavity 5 can be sealed off inwardly so well that the material then injected by the injection-molding unit 7 via the runner 6 does not ooze out inwardly.
Numerous modifications are possible within the scope of the invention. For instance, the sealing cushion 8 could also be arranged movably within the mold half 4. The invention is also not in any way restricted to the encapsulation of convex glass plates, but can rather be used for encapsulating the edges of all thin-walled plates.
Claims (4)
1. A method of encapsulating the edges of thin-walled plates (1), in particular made of breakable materials, such as glass or ceramic, by means of an apparatus having two mold halves (3, 4) which can be moved toward each other and between which the edges are securely held, wherein the two mold halves (3, 4) are firstly moved toward each other under essentially maximum bonding pressure, the edges of the plate (1) being taken up but not loaded, and, after reaching the maximum bonding pressure, an internal sealing cushion (8) is pressed against the plate (1) with a pressure corresponding to the material of the plate (1).
2. An apparatus for carrying out the method as claimed in claim 1, having two mold halves which can be moved toward each other, wherein a sealing cushion (8) which can be pressed with controllable pressure against the plate (1) is arranged displaceably within the one mold half (3).
3. The apparatus as claimed in claim 2, wherein suckers (9) are arranged on one mold half (4) for positioning the plate (1) before it is taken up by the mold halves (3, 4) or the sealing cushion (8).
4. The apparatus as claimed in claim 2 or 3, wherein the sealing cushion (8) consists of metal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0085298U AT2993U3 (en) | 1998-12-22 | 1998-12-22 | METHOD AND DEVICE FOR INJECTING THE EDGES OF THIN-WALLED PANELS |
| ATGM852/98 | 1998-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2268328A1 true CA2268328A1 (en) | 2000-06-22 |
Family
ID=3501284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2268328 Abandoned CA2268328A1 (en) | 1998-12-22 | 1999-04-16 | Process and device for encapsulating the edges of thin-walled plates |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1013393A1 (en) |
| AT (1) | AT2993U3 (en) |
| CA (1) | CA2268328A1 (en) |
| DE (1) | DE29901332U1 (en) |
| IT (1) | IT248041Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9220452B2 (en) | 2003-12-17 | 2015-12-29 | Roche Diagnostics Operations, Inc. | Plastic injection-moulded part with embedded component |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108481682A (en) * | 2018-05-21 | 2018-09-04 | 深圳艾利门特科技有限公司 | A kind of encapsulation die and encapsulation methods for thin wall component |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62251113A (en) * | 1986-04-25 | 1987-10-31 | Toyoda Gosei Co Ltd | Manufacture and device fof window panel |
| JPS62251114A (en) * | 1986-04-25 | 1987-10-31 | Toyoda Gosei Co Ltd | Manufacture and device for window panel |
| JP2503539B2 (en) * | 1987-10-23 | 1996-06-05 | 旭硝子株式会社 | Method for manufacturing window glass with gasket |
| EP0354481B1 (en) * | 1988-08-09 | 1995-11-29 | Asahi Glass Company Ltd. | Method of preparing window glass with a gasket and a shaping mold for preparing such window glass |
| JPH02249616A (en) * | 1989-03-24 | 1990-10-05 | Takagi Seiko:Kk | Insert molding method for plate glass |
| IT1276755B1 (en) * | 1995-06-20 | 1997-11-03 | Fe Ro Plastica S A S | SYSTEM FOR THE DIRECT INJECTION OF A FRAME OF PLASTIC MATERIAL ALONG THE CONTOUR OF A PLATE, FOR EXAMPLE OF GLASS |
-
1998
- 1998-12-22 AT AT0085298U patent/AT2993U3/en not_active IP Right Cessation
-
1999
- 1999-01-27 EP EP99890019A patent/EP1013393A1/en not_active Withdrawn
- 1999-01-27 DE DE29901332U patent/DE29901332U1/en not_active Expired - Lifetime
- 1999-02-03 IT IT1999UD000005 patent/IT248041Y1/en active
- 1999-04-16 CA CA 2268328 patent/CA2268328A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9220452B2 (en) | 2003-12-17 | 2015-12-29 | Roche Diagnostics Operations, Inc. | Plastic injection-moulded part with embedded component |
Also Published As
| Publication number | Publication date |
|---|---|
| AT2993U3 (en) | 2000-01-25 |
| ITUD990005U1 (en) | 2000-08-03 |
| AT2993U2 (en) | 1999-08-25 |
| DE29901332U1 (en) | 1999-04-29 |
| EP1013393A1 (en) | 2000-06-28 |
| IT248041Y1 (en) | 2002-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2262975C (en) | Process and apparatus for making a leak proof cap and body assembly | |
| EP1207031A4 (en) | Method of forming coating on inner surfaces of metal mold | |
| JPS6179613A (en) | Method and device for molding frame in precise size around flat part having dimensional tolerance or part with curved central section | |
| AU4013589A (en) | Device and method for at least partially encapsulating a substantially sheet shaped element | |
| CA2358898A1 (en) | Process for the vacuum-assisted resin impregnation of reinforcing material with equalized pressure | |
| CA2328908A1 (en) | Method and apparatus for substantially simultaneously forming multiple articles having different properties | |
| US20030143406A1 (en) | System and method for using a pre-formed film in a transfer molding process for an integrated circuit | |
| US7419628B2 (en) | Method and moulding tool for manufacturing fibre-reinforced products | |
| EP0787568A4 (en) | Compound plate and method of manufacturing the same | |
| CA2268328A1 (en) | Process and device for encapsulating the edges of thin-walled plates | |
| KR102393495B1 (en) | Resin molded product manufacturing method and resin molding apparatus | |
| AR022114A1 (en) | COMPACT MOLDING DEVICE | |
| CA1315517C (en) | Method and apparatus for bonding parts of disappearing model used for casting | |
| AU2001281663A1 (en) | Method and device for closing plastic closing devices on a multiple cavity injection moulding tool | |
| MY107578A (en) | Method of closing a mould before at least partly fil- ling a cavity of this mould with a solidifiable liquid and press suitable for carrying out this method and mould part suitable for use in this press | |
| JPH03202327A (en) | Cleaning process of mold face for molding resin, sheet member for cleaning used in same process and continuous automatic resin-molding process | |
| ES2145815T3 (en) | PROCEDURE FOR THE DELIMITED INSERTION OF A DECORATION IN A THERMOPLASTIC SUPPORT. | |
| WO2002062557A8 (en) | Linear drive device for opening and closing molding tools and for applying a closing force thereon | |
| WO2005068157A3 (en) | Injection compression mould with venting means | |
| JP6086166B1 (en) | Resin sealing mold, resin sealing device and resin sealing method | |
| AU9685198A (en) | In mold bonded thin composites and a method for manufacturing the composites | |
| DE60128477D1 (en) | DEVICE FOR FILLING FILLING MATERIALS ON SMOOTH TOOTH SURFACES, ESPECIALLY ON INTERPROXIMUM SURFACES | |
| US20030037500A1 (en) | Roof module and method of producing a roof module | |
| EP1607201B1 (en) | Apparatus and method for providing a plastic edge on a plate | |
| WO2005012614A3 (en) | Apparatus and method for molding spacer fabric or lofted material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |