CA2196355A1 - Method of making snowmobile tracks - Google Patents
Method of making snowmobile tracksInfo
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/222—Compression 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
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/001—Shaping in several steps
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0045—Perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING 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
- B29K2021/00—Use of unspecified rubbers as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING 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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING 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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
- B29K2077/10—Aromatic polyamides [polyaramides] or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/08—Condition, 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
- B29K2105/0809—Fabrics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
-
- 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
- B29L2031/709—Articles shaped in a closed loop, e.g. conveyor belts
- B29L2031/7094—Driving belts
-
- 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
- B29L2031/737—Articles 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.
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.
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.
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.
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)
| 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 |
-
1997
- 1997-01-30 CA CA 2196355 patent/CA2196355A1/en not_active Abandoned
Cited By (3)
| 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 |