CA2196355A1 - Method of making snowmobile tracks - Google Patents

Method of making snowmobile tracks

Info

Publication number
CA2196355A1
CA2196355A1 CA 2196355 CA2196355A CA2196355A1 CA 2196355 A1 CA2196355 A1 CA 2196355A1 CA 2196355 CA2196355 CA 2196355 CA 2196355 A CA2196355 A CA 2196355A CA 2196355 A1 CA2196355 A1 CA 2196355A1
Authority
CA
Canada
Prior art keywords
track
mould
formations
holes
male
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
Application number
CA 2196355
Other languages
French (fr)
Inventor
Gilles Soucy
John Ramsay
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.)
KIMPEX ACTION Inc
Soucy International Inc
Original Assignee
KIMPEX ACTION Inc
Soucy International Inc
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 KIMPEX ACTION Inc, Soucy International Inc filed Critical KIMPEX ACTION Inc
Priority to CA 2196355 priority Critical patent/CA2196355A1/en
Publication of CA2196355A1 publication Critical patent/CA2196355A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D29/00Producing belts or bands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/222Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length characterised by the shape of the surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00Shaping characteristics in general
    • B29C2791/001Shaping in several steps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00Shaping techniques involving a cutting or machining operation
    • B29C2793/0045Perforating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00Use of unspecified rubbers as moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • B29K2077/10Aromatic polyamides [polyaramides] or derivatives thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809Fabrics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/709Articles shaped in a closed loop, e.g. conveyor belts
    • B29L2031/7094Driving belts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/737Articles provided with holes, e.g. grids, sieves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The present invention provides a method of making a rubber track having fibrous reinforcement, said track having predefined holes for studs wherein the holes are formed during the vulcanisation of the track. Preferably, the method comprises preparing a layered mould whereby the adjacent surfaces of the mould contain opposed male and female formations and then vulcanising the track by pressing the mould together such that the male formations in the mould pass through the track to produce holes in the track.

Description

2 t 96355 A METHOD OF MAKING SNOWMOBILE TRACKS

FIELD OF THE INVENTION

This invention is concerned with a method of making snowmobile tracks.

BACKGROUND OF THE INVENTION

Snowmobile tracks are made of rubber and are reh~rolced with fibrous plies 10 of such materials as KEVLAR~, polyester or nylon. They may be additionally reinforced by transverse fibreglass bars.
It is desirable to perforate the tracks to be able to fit studs for improved traction and it has been proposed to punch or otherwise cut those apertures once the track has been formed (i.e. when it has been vulcanised and removed from its 15 mould). This procedure has been found to damage the reinforcing plies to an extent to reduce the life of the track unacceptably.

SI~MMARY OF THE INVENTION

According to this invention, the holes for the studs are formed during the vulcanisation process. This is done by making opposed male and female formationsin adjacent surfaces of the mould in such a way that the male formations pass between the fibres of the reinforcing ply or plies. This method reduces the damage done to the reinforcing ply or plies. The track is vulcanised using conventionalparameters and techniques known by those skilled in the art.
Preferably, the invention provides a method of making a reinforced rubber track with predefined holes comprising: preparing a mould having movable outsideparts and a stationary inside part, the adjacent inside surfaces of the mould cont~ining complementary male and female formations; putting a continuous piece of track on a plurality of rollers such that portions of the track fit between the parts ~ Trade-mark of the mould; vlllc~ni~ing portions of the track in the mould by pressing the movable outside parts against the stationary inside part of the mould such that the male formations in the mould pass through the track to produce holes in the track;
and rotating the continuous piece of track on the rollers such that the rem~ining S portions of the track are vlllc~ni~e~ in the mould.
Although it is preferable that a sandwich mould be used, a basic two-part layered mould or a doughnut (i.e. circular) mould can be used as well.

BRIEF DESCRIPTION OF THE DRAVVINGS
The following drawings illustrate the embodiments of the invention:
Figure 1 is a simplified perspective drawing of the sandwich mould used to make a snowmobile track with predefined holes;
Figure 2 shows a cross-section of the appal~lus shown in Figure 1 and 15 specifically shows a continuous piece of track placed on rollers and placed in communication with the sandwich mould; and Figure 3 shows a cross-section of the composition of a track which forms part of the invention.

20 DESCRIPTION OF THE PREFERRED EMBODlMENTS

The most effective and economic way of pr~rti~ing the invention is by first preparing a mould 10 as shown in Figures 1 and 2. The mould has movable outside parts 20 and a stationary inside part 15. The adjacent inside surfaces 25 of the25 mould contain complementary male 30 and female 35 formations and also includeformations 40 that define a track design. The male formations 30 taper from root to tip to permit their passage between the fibres of the track with minim~l disturbance.
As noted, the female formations 35 are complementarily shaped.
As shown in Figures 2 and 3, a continuous piece of track 45 is prepared 30 wherein the track 70 comprises two rubber plies 50, two plies of fabric, such as nylon, 55 and an internal ply of KEVLAR cording 60. The continuous piece of track 45 is placed on two rollers 65 such that only a portion of the track 70 fits 21 9~355 bel~cen the parts of the mould 10. The portion of the track 70 located in the mould10 is v~ ~ni~ed by pressing the movable outside parts 20 of the mould 10 against the stationary inside part 15 of the mould 10 such that the male formations 30 in the mould pass through the track 70 to produce holes in the track 70. The track 70 is 5 vulcanized using conventional parameters and techniques known in the art. Once a portion of the track 70 has been vul~ni~e~l, the continuous piece of track 45 isrotated on the rollers 65 such that any rem~ining portions of the track 70 can be v~llc~ni7Pd according to the process described above.

As will be apparent, the exact number of plies of rubber, fabric and reinforcing cording in a track are not particularly limited and will depend on, for example, the horse-power of the snowmobile on which the track is to be used.

Claims (6)

1. A method of making a rubber track having fibrous reinforcement, said track having predefined holes for studs wherein the holes are formed during the vulcanisation of the track.
2. A method of making a rubber track having fibrous reinforcement, said track having predefined holes comprising:
preparing a layered mould whereby the adjacent surfaces of the mould contain opposed male and female formations; and vulcanising the track by pressing the mould together such that the male formations in the mould pass through the track to produce holes in the track.
3. A method of making a rubber track having fibrous reinforcement, said track having predefined holes comprising:
preparing a mould having movable outside parts and a stationary inside part, the adjacent surfaces of the mould containing complementary male and female formations;
putting a continuous piece of track on a plurality of rollers such that portionsof the track fit between the parts of the mould;
vulcanising the track in the mould by pressing the movable outside parts against the stationary inside part of the mould such that the male formations in the mould pass through the track to produce holes in the track; and rotating the continuous piece of track on the rollers such that the remaining portions of the track are vulcanised in the mould.
4. The method of claims 2 or 3 wherein the male formations taper from root to tip and are passed between the fibres of the reinforcement.
5. A method as claimed in claims 2 or 3 wherein the track is reinforced with a combination of nylon and KEVLAR.
6. A method as claimed in claims 2 or 3 wherein the adjacent surfaces of the mould contain formations that define a tread design.
CA 2196355 1997-01-30 1997-01-30 Method of making snowmobile tracks Abandoned CA2196355A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2196355 CA2196355A1 (en) 1997-01-30 1997-01-30 Method of making snowmobile tracks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2196355 CA2196355A1 (en) 1997-01-30 1997-01-30 Method of making snowmobile tracks

Publications (1)

Publication Number Publication Date
CA2196355A1 true CA2196355A1 (en) 1998-07-30

Family

ID=4159784

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2196355 Abandoned CA2196355A1 (en) 1997-01-30 1997-01-30 Method of making snowmobile tracks

Country Status (1)

Country Link
CA (1) CA2196355A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6406655B1 (en) 2000-01-10 2002-06-18 Camoplasy Inc. Method of making a molded track for use with a snowmobile
US7063395B2 (en) 2003-03-07 2006-06-20 Camoplast Inc. Laterally reinforced endless belt track
CN107364050A (en) * 2017-07-31 2017-11-21 徐元聪 The method of the process equipment of shot-blasting machine crawler belt and the device fabrication shot-blasting machine crawler belt

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6406655B1 (en) 2000-01-10 2002-06-18 Camoplasy Inc. Method of making a molded track for use with a snowmobile
US7063395B2 (en) 2003-03-07 2006-06-20 Camoplast Inc. Laterally reinforced endless belt track
CN107364050A (en) * 2017-07-31 2017-11-21 徐元聪 The method of the process equipment of shot-blasting machine crawler belt and the device fabrication shot-blasting machine crawler belt

Similar Documents

Publication Publication Date Title
US4466138A (en) Safety helmet with a shell injected from thermoplastics and method for the manufacture of said helmet
JP4251870B2 (en) Power transmission belt
CA2117578C (en) Toothed belt construction formed mainly of thermoplastic material and method of making the same
US7338571B2 (en) Method of manufacturing tire with metal studs
US5248551A (en) Bumper preform and method of forming same
CA1147579A (en) Heavy duty cogged belt
WO1984004951A1 (en) Belt construction and method of making the same
EP0038279A3 (en) Tire and method of reinforcement
DE69025853T2 (en) tire
US6045735A (en) Method of manufacturing a transmission belt
CA2462126C (en) Rubber composition, pneumatic tire and method of producing the same
CA2196355A1 (en) Method of making snowmobile tracks
DE3906092A1 (en) TIRES AND METHOD FOR THE PRODUCTION THEREOF
EP1454732A4 (en) Production method for unvulcanized rubber member and tire
FI83791B (en) SLITSTARKT BAND OCH FOERFARANDE FOER FRAMSTAELLNING AV DETTA.
US2677969A (en) V-belt
JPH085146B2 (en) Rubber crawler manufacturing method
DE846619C (en) Process for producing a flexible material for drive belts or the like.
JPS5812724A (en) Manufacture of curved reinforcing plastic cutting material
JP2000210948A (en) Manufacture of rubber crawler
US2216999A (en) Lug strap construction
US2275233A (en) Method of making v-belts
CN215151362U (en) Rubber track preforming mould
JPH02122910A (en) Injecting mold for toothed belt made of synthetic resin
JP3295545B2 (en) Rubber crawler manufacturing method

Legal Events

Date Code Title Description
FZDE Discontinued
FZDE Discontinued

Effective date: 20010130