GB2281530A - Improvements in the procedure and mould for manufacturing grommet elements - Google Patents

Improvements in the procedure and mould for manufacturing grommet elements Download PDF

Info

Publication number
GB2281530A
GB2281530A GB9415366A GB9415366A GB2281530A GB 2281530 A GB2281530 A GB 2281530A GB 9415366 A GB9415366 A GB 9415366A GB 9415366 A GB9415366 A GB 9415366A GB 2281530 A GB2281530 A GB 2281530A
Authority
GB
United Kingdom
Prior art keywords
mould
bundle
wires
grommet
glue
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.)
Granted
Application number
GB9415366A
Other versions
GB2281530B (en
GB9415366D0 (en
Inventor
Teixido Miquel Jorda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lear Automotive EEDS Spain SL
Original Assignee
Lear Automotive EEDS Spain SL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lear Automotive EEDS Spain SL filed Critical Lear Automotive EEDS Spain SL
Publication of GB9415366D0 publication Critical patent/GB9415366D0/en
Publication of GB2281530A publication Critical patent/GB2281530A/en
Application granted granted Critical
Publication of GB2281530B publication Critical patent/GB2281530B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/08Distribution boxes; Connection or junction boxes
    • H02G3/081Bases, casings or covers
    • H02G3/083Inlets

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Insulating Bodies (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Ropes Or Cables (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Processing Of Terminals (AREA)

Description

1.
--- -1- IMPROVEMENTS IN THE PROCEDURE AND 2281530 FOR MANUFACTURING GROMMET ELEK The present application f or a Patent of Invention, as indicated in its wording, concerns "IMPROVEMENTS IN THE PROCEDURE AND MOULD FOR MANUFACTURING GROMMET ELEMENTS", the new construction, conformation and design features of which fulfil the aim for which they have been specifically designed, with maximum safety and efficiency.
There are some grommet elements that exist on the market and can, therefore, be considered as the state of the art, whose function is that of permitting the passing of a set- of wires (more than 20) from the engine compartment of an automobile to its passenger area, or between any other two compartments, so that once the element is attached to the hole in the metal plate through which the wiring has passed, total insulation from water, gases and noise is achieved.
The present invention provides a procedure adapting the element in two successive operations over the actual wiring, the first consisting in insulating the wire bundle under pressure, and the second, in surface-moulding the PVC or other thermoplastic elastomer to give shape to the grommet, using three different plastic products.
In function of the dif f erent designs of the grommet elements and according to the recommended procedure, once completed, the following functions may be fulfilled:
lst - Insulation of the bundle from water, gases and noise.
2nd - Insulation of the bundle with respect to the grommet.
3rd - Insulation of the entire wire bundle-grommet unit from water, gases and noise.
4th - Construction of a clamp-plate to allow for attachment to the metal plate and rigidity of the unit.
Sth - Construction of a barrier seal for the grommet and partition plate.
6th - Construction of some legs for preliminary attachment to the metal plate, to facilitate the tightening of the screws.
7th - Use of self -threading screws, which is possible because of the plastic clamp.
8th - Housing of the screws, which allows them to be used without a joint.
9th Acoustic insulation.
10th Assembly from the interior or exterior, thanks to a casing disc which covers the through hole.
llth - Attachment holes, the quantity and distribution of which depends on the thickness of the metal plate and their locatlon.
The cycle of the recommended procedure comprises, at minimum, some of the following operations:
a) Assembly of the wiring with the terminals connected.
b) Shaping of the bundle and taping of two adjacent points an the bundle of wire formed.
c) Insertion of the bundle in the lower part of the mould.
d) Closing of the mould.
e) Approximation of the two adjacent points of the bundle by mechanical -pneumatic or hydraulic means, to produce the bulge in the wires that make up the bundle.
f) Application of the glue inside the mould under pressure, at a high temperature and for a set amount of time.
g) Injection of the glue at a high temperature in between the wires.
h) Refrigeration of the mould to allow the glue to - 30 solidify.
i) Surf ace moulding of the PVC or other thermoplastic elastomer to give shape to the grommet element as necessary, connecting the insulated bundle to the clamp or plate.
There are no antecedents of this type of procedure, although some related procedures are described in German Patent no. 4017077, belonging to" Robert BoschGmbH (however, in this Patent, the surface moulding operation is carried out over a specific part and for a small quantity of wires); other related procedures are described in European Patent no. 179,657, belonging to Raychem GmbH, and in French Patent No. 8509989, belonging to the firm Lisa Draxlmeier.
In a second aspect, the present invention provides a mould for manufacturing grommet elements wherein the mould, according to the procedure, is formed by a semimould that includes a left-hand and a right-hand closure support, which support wire closures, and a semi-mould formed by some wire closures which are supported by a closure support.
Other details and features of the present application f or a Patent of Invention will become clear during the description which follows, wherein reference is made to the drawiilgs that accompany this specification, which provides, in a somewhat schematic manner, the preferred details. These details are given by way of example, referring to a possible embodiment, but this is not limited to the details which are hereinafter set forth, and therefore this description should be seen as designed to illustrate and without any kind of limitation.
The varibus elements numbered in the drawings attached to the current specif ication are set forth as follows: (10) mould, (10s) upper semimould, (10i) lower semimould, (11s) upper left-hand stationary wire closure support, (11i) lower left-hand stationary wire closure support, (12s) upper right-hand mobile wire closure support, (12i) lower right-hand mobile wire closure support, (13d) lower right-hand stationary wire closure, (13i) lower left-hand stationary wire closure, (14d) upper right-hand wire closure, (14i) upper left-hand wire closure, (15) entrance for glue at a high temperature, (16) duct, (17) moulding chamber, (18s) upper plate for refrigeration circuit, (18i) lower plate for refrigeration circuit, (19) axially stationary part of the assembly, (20) axially mobile part of the assembly, (21) hollow or housing-guide for bundle of wires.
Figure no. 1 is a frontal axonometric view in cross section of the mould (10), closed and without wires.
Figure no. 2 is an upper view in plan of the lower 5- part of the mould in the set.
In one of the preferred embodiments, the mould (10) assembled in the injection machine, is comprised of an upper part which comes down over the lower part and is raised again, by means of some vertical upward and downward movements, perfectly programmed, constituting the upper part or semi-mould (10s) in an upper left-hand wire closure support (11s) and an upper right-hand wire closure support (12s), with (11s) and (12s) supporting some wire closures (14d) and (14i) as seen in Figure no.
1. - The lower part or semi-mould (10i) is comprised of some right-hand and left-hand wire closures (13d) and (13i), supported by a left-hand closure support (Ili) and a right-hand closure support (12d).
In the middle section of the semi-mould (10i) and in the form of a longitudinal hollow which crosses the semi mould from left to right, there is a housing-guide (21) for the bundle of wires, over which the grommet element is constructed.
The moulding chamber (17) is refrigerated by means of some plates for the refrigeration circuit (18s) and (18i) which prevent, in the first place, the temperature of the glue introduced in the inside of (17) through the entrance (15) and the duct (16), from damaging the insulation of the wires upon initial contact, so as to contribute afterwards towards the solidification of the glue. The configuration of the chamber (17) depends on the shape of the grommet element.
The machine incorporated into (10) provides it with some movements for the opening, closing, and axial compression of the mobile part (20) over the stationary part (19), as can be seen in Figure no. 2.
The procedure begins with the assembly of the terminals on the ends of the corresponding wires, which is followed by the alignment of various wires and their taping at two adjacent points, thus constituting a bundle of wires.
The bundle of wires is inserted manually into the hollow (21) which is found in the lower part (13d) and (13i), after which follows the descent of the upper part, thus holding in place the two adjacent points of the bundle of wires by means of the pairs (13d)-(13i), and (14d)-(14i).
When said points of the bundle are held in place, the 10- right-hand mobile part (20) of the mould moves towards the left over part (19), at which time the bulging of the wires takes place an the inside of the chamber (17), causing them to separate from each other.
Following this, the glue enters at approximately + 200C and at a pressure of 40 kg/cm2, and passes through the spaces between the wiresand the entire volume of the chamber (17), creating upon cooling a fully insulated solid body.
The configuration of the moulding chamber (17) with respect to shape and dimensions, shall depend on the needs as determined by the quantity and diametre of the wires.
Finally, following this is the surface moulding operation over the entire insulated bundle that has been formed, in order to create the external shape of the grommet according to the needs of the hole in the metal plate through which the wiring will pass, so that the insulation explained above is produced once the grommet is secured.
After observing the drawings and following the explanation we have given about them, it will be seen that the application for a Patent of Invention, with is the motive f or the present Specification, provides a simple and effective construction which may be put into practice with great ease, constituting, without any doubt, a new industrial result.
The machine described forms a complete unit with the procedure which is not liable to function independently, Having sufficiently described the content of the present Patent, together with the drawings attached, it is understood that any modifications in the details deemed suitable may be made.

Claims (7)

CLAIMS:
1 1. A method of manufacturing a grommet element, of the 1k type consisting of a sleeve-plate with elements for 5 positioning and fastening to a plate that separates an engine compartment from a passenger area, and containing electrical wires, providing insulation from noise and from the flow of liquids and gases, including, at least, these two operations:
a) Insulation of the bundle of wires under pressure by the injection of glue at a high temperature in between the wires in the bundle, and b) Surface moulding of PVC or thermoplastic elastomers to give shape to the grommet element as needed.
2. A method according to claim 1, wherein the operation for insulating the bundle of wires comprises, at least, the following operations:
1) Assembly of the wiring with the terminals _n connected, 2) Formation of the bundle and taping it at its two adjacent points, -g- 3) Insertion of the bundle in the lower part of the mould, 4) Closing of the mould, 5) Approximation of the two adjacent points of the bundle by mechanical-pneumatic or hydraulic means to create a bulge in the wires which make up the bundle, 6) Injection of glue into the mould under pressure, at an elevated temperature for a programmed amount of time, 7) Refrigeration of the mould to cause the glue to solidify, 8) surface moulding of the PVC or other thermoplastic elastomer to give shape to the grommet element as needed.
3. A method according to claim 2, wherein the pressure at which the glue enters the mould is between 20 and 70 kg/CM2.
4. A method according to claim 2 or claim 3 wherein the temperature at which the glue enters the mould is between 130C and 250C.
5. A mould for manufacturing grommet elements wherein the mould, according to the procedure, is formed by a semi-mould that includes a left-hand and a right-hand closure support, which support wire closures and a semimould formed by some wire closures which are supported by 5 a closure support.
6. A mould according to claim 5, wherein the middle section of the semimould there is a housing-guide in the form of a longitudinal hollow which crosses the semimould from left to right for the bundle of wires, over 10 which the grommet element is constructed.
7. A mould for manufacturing grommet elements substantially as herein described with reference to the accompanying drawings.
Z
GB9415366A 1993-08-03 1994-07-29 Improvements in the procedure and mould for manufacting grommet elements Expired - Fee Related GB2281530B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9301739A ES2076866B1 (en) 1993-08-03 1993-08-03 IMPROVEMENTS IN THE PROCEDURE AND MOLD FOR THE MANUFACTURE OF CABLE ELEMENTS.

Publications (3)

Publication Number Publication Date
GB9415366D0 GB9415366D0 (en) 1994-09-21
GB2281530A true GB2281530A (en) 1995-03-08
GB2281530B GB2281530B (en) 1997-04-23

Family

ID=8282767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9415366A Expired - Fee Related GB2281530B (en) 1993-08-03 1994-07-29 Improvements in the procedure and mould for manufacting grommet elements

Country Status (5)

Country Link
DE (1) DE4343656A1 (en)
ES (1) ES2076866B1 (en)
FR (1) FR2708799B1 (en)
GB (1) GB2281530B (en)
PT (1) PT101430B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108695780A (en) * 2018-06-14 2018-10-23 成都理工大学 A kind of anti-slip memorial alloy power circuit pipe fitting
CN114137455B (en) * 2021-11-25 2024-02-27 中国科学院合肥物质科学研究院 Electro-optical conversion device mounted on flange surface

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0612132A1 (en) * 1993-02-19 1994-08-24 Automobiles Peugeot Device for providing a passage for an electric cable bundle through a wall, especially in a motor vehicle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2340314A1 (en) * 1973-08-09 1975-02-20 Bosch Gmbh Robert STRAIN RELIEF CABLE GUIDE THROUGH A WALL OF ELECTRICAL DEVICES
SE420783B (en) * 1980-03-14 1981-10-26 Ericsson Telefon Ab L M DEVICE FOR FIRE SEALING FOR A ATMINSTONE A WIRE THROUGH A BUILDING ELEMENT
CA1195793A (en) * 1981-12-28 1985-10-22 Lester T. Toy Elastomer based adhesive compositions
DE3903059A1 (en) * 1989-02-02 1990-08-09 Minnesota Mining & Mfg Method and device for sealing a cable bundle in the longitudinal direction
ES2097676B1 (en) * 1991-07-03 1997-11-16 Mecanismos Aux Ind PERFECTED SOCKET SLEEVE AND ITS MANUFACTURING PROCEDURE.
DE4321044A1 (en) * 1993-06-25 1995-01-05 Henkel Kgaa Arrangement for energy distribution in a limited space

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0612132A1 (en) * 1993-02-19 1994-08-24 Automobiles Peugeot Device for providing a passage for an electric cable bundle through a wall, especially in a motor vehicle

Also Published As

Publication number Publication date
PT101430B (en) 2001-06-29
GB2281530B (en) 1997-04-23
FR2708799A1 (en) 1995-02-10
PT101430A (en) 1995-03-01
FR2708799B1 (en) 1998-11-13
ES2076866A1 (en) 1995-11-01
DE4343656A1 (en) 1995-02-09
GB9415366D0 (en) 1994-09-21
ES2076866B1 (en) 1996-08-01

Similar Documents

Publication Publication Date Title
US5278002A (en) Battery cover
US6376773B1 (en) Structure for connecting electrical cables to a flat electrical cable
KR100396735B1 (en) Molded hose joint assembly
CA2301098A1 (en) Heat exchanger assembly utilizing grommets and integral cast tanks
WO1999011492A1 (en) Foam wire harness with shape memory
AU703708B1 (en) Flat plug molding device
WO1999010205A1 (en) Multi-shot molds for manufacturing wire harnesses
JPH11120963A (en) Assembled-type sealed secondary battery
GB2281530A (en) Improvements in the procedure and mould for manufacturing grommet elements
US5789704A (en) Container with heat removing features for containing an electronic contol unit
US4103136A (en) Switch housing with cable seal
US5635674A (en) Sealed passage for electrical leads across a barrier
US3943008A (en) Blow molded gang-type vent for a multiple-cell electric storage battery
JP2000179751A5 (en)
US6239370B1 (en) Electrical line penetration through a housing wall
JP2002127188A (en) Injection molding die for terminal waterproof treatment
US4112043A (en) Electrical conductor for a bushing and method of making an electrical bushing
KR860001105B1 (en) A housing an electric apparatus with lead wires and die apparatus for molding the same
WO2003105301A1 (en) Method for wrapping bus-bars for prefabricated electric ducts
CN207677104U (en) A kind of sealing structure and sensor module of automobile sensor connection component
EP0651485A1 (en) Sealing arrangement and methods
FR2717640B1 (en) Motor vehicle alternator comprising a cooling chamber integrated into the stator casing.
US4751954A (en) Method of casting bimetallic articles
HUT75415A (en) Connecting and moulding device for joining tubes protecting electrical cables and connectors, and method for mounting the same
EP1010934A2 (en) Method of manufacturing luminous indicators and luminous indicators produced

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010729