WO1995023678A1 - Safety device - Google Patents
Safety device Download PDFInfo
- Publication number
- WO1995023678A1 WO1995023678A1 PCT/SE1995/000220 SE9500220W WO9523678A1 WO 1995023678 A1 WO1995023678 A1 WO 1995023678A1 SE 9500220 W SE9500220 W SE 9500220W WO 9523678 A1 WO9523678 A1 WO 9523678A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cover
- cable
- stand
- switchable
- same
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
- B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
Definitions
- the present invention relates to a device in machines with chip removal tools, eg crosscut machines for cutting of timber or the like, in which the material to be cut extends to and eventually past a work table, where a tool being provided to machine the material.
- chip removal tools eg crosscut machines for cutting of timber or the like
- a safety device is neither to be of such a type that the work of the operator being more difficult as in such a case there is a vast rise for that the operator is trying to eliminate the f protective measures by disabling the safety device by removing the same or any other measure taken by the operator.
- the task forming the basis of the present invention is to provide an improved device giving a higher grade of protection than previously known devices.
- the device disclosed by way of introduction is characterised in that a cover being switchable between a protective position, in which the cover provides a shield between the tool and the material in the vicinity of the same and the surrounding at least in the direction of the operator, and a rest position, in which the cover allow the operator availability to the place of machining.
- the cover having open sides to allow long matrial pieces to extend past the same to the place of machining and also eventually from the same.
- the cover is curved around an axis extending substantially parallel to the material piece, and in it ' s working position provides an extention of a fixed rear cover.
- the fixed rear cover is curved on substantially the same way as the switchable cover, which in it ' s rest position is placed above the fixed rear cover.
- the switchable cover is connected to a mechanism for switching of the same between the working position and the rest position.
- the mechanism comprises a piston and cylinder means, of which the cylinder being mounted on a fixed stand, and of which the piston is connected with a carriage for movement on a guide bar mounted on the stand, which carriage is provided with two cable wheels on the same shaft, wherein a cable fixed on the stand extends over one of the wheels to a cable wheel mounted on the stand below the carriage and from this to a substantially horisontally on a part of the stand above the front edge of the rear cover mounted cable wheel and to a first cable mount at the rear edge on the switchable cover and wherein a second cable fixed on the stand extend to the other wheel on the carriage and from this to a cable wheel at the upper end of the stand and to a cable wheel on the stand in level with the upper side of the covers to another cable mount closer to the front edge of the switchable cover than the first cable mount.
- the piston and cylinder means is interconnected in a safety arrangement allowing running of the tool only
- the device realised by the present invention does not in any way delay the work of the operator or neccessary measures at the machine but yet give a full protection between the operator and the cutting tool.
- the work table and the tool are available by a long wood piece in a machine in accordance with the present invention without any any advertent influence on the desired protection.
- the device according to the present invention is in a rest position the work table is as available as if the machine did not have the device according to the present invention, whereby the rise for that the operator should try to eleminate the device has been minimised in most possible extention.
- a device in accordance with the present invention does not in any way influence the working capacity of the machine.
- Fig 1 is a side view of an embodiment of a device in accordance with the present invention.
- Fig 2 is a view in the direction of the arrows A-A in fig 1.
- the embodiment of the present invention shown therein is mounted on a crosscut saw, of which only the saw table 1 and the cutblade 2 are shown schematically.
- the crosscut saw is of the type having high capacity and is controlled numerically or by a computer.
- the cutblade 2 is liftable and lowerable through a slot in the saw table 1 and also the cutblade 2 may be rotable universally for cutting in different angles.
- a stand 3 is mounted on an exhaustion cover 4 with hose connectors 5 and 6.
- the stand 3 is in the form of a column inclined a few degrees in over the work table 1 and carrying a horisontal part 7 via a strut 8.
- the free end of the horisontal part 7 of the stand 3 is carrying a substantially horisontal cable wheel 9.
- a cable wheel 10 is mounted on the stand 3 in level with the horisontal part 7.
- a piston and cylinder assembly 11 is mounted on the column of the stand 3.
- the end of the cylinder of the assembly is fixed on the column of the stand 3 and the piston end is provided with a carriage 12 moveable along a guide bar 13 mounted on the column of the stand 3 between an upper mount 14 and a lower mount 15.
- a cable wheel 15 is mounted in alignment with the cable wheel 10 and an outer cable wheel 16 on the carriage 12.
- the cable wheel 16 is mounted on the same shaft as an inner cable wheel 17 in alignment with a further cable wheel 18 mounted on the column of the stand 3 below the cable wheel 10.
- An adjusting screw 20 has an upper mount 19 on the upper end af the column of the stand 3 and a lower mount 21 for an adjusting screw 22.
- a first cable 23 in the form of av steel wire covered with plastic extends from the adjusting screw 22 for stretching of the cable 23, via the cable wheel 17 to the cable wheel 18 and therefrom to the cable wheel 9 and therefrom to a cable mount 24 at the rear edge of an switchable cover 25.
- a further cable 26 in the form of a steel wire covered with plastic extends from the adjusting srew 20 for stretching of the cable
- Fig 1 shows clarily that the switchable cover 25 is curved around the blade 2 and extends above a rear fixed cover 28 having a curved part and a straight part, said straight part extends down to the exhaustion cover 4 and is supported by a plate 29.
- the cover 25 is switchable between the position shown with solide lines in fig 1 and the position shown with broken lines in fig 1.
- the cover 25 is made of plexiglass or the like and a clamp strip 30 is provided on the front edge of the cover 24 and en strip 31 of cellular rubber is provided on said edge as support against the work table 1 in the work position.
- the curved part of the fixed rear cover 28 is provided with a guide 32 on each side for guiding the cover 25.
- the guides 32 are carrying bearing mounts 33 and 34 for bearings, in which the cover is running.
- bearings are groove ball bearings but even other types of bearings are suitable.
- the cover 25 Before an operator of the machine may start rotation of the cutblade 2 and set the same in working position the cover 25 has to be switched to the position shown with broken lines in fig 1. First thereafter it is possible for the operator to start rotation of the cutblade 2.
- the cover 25 is switched to said position by pressurization of the piston and cylinder assembly for movement of the carriage 12 from the position shown on the drawings to an upper position along the guide bar 13. During this movement the cable wheel 17 will pull the cable 23 via the cable wheel 18 and the cable wheel 9 and thereby the cover 25 will swing above the cover 28 to the position shown with dotted lines in fig 1. At the same time the cable 26 will run over the cable wheels 10,16 and 15 for removing slack in the cable during the movement of the cover 25 from the position shown with solide lines in fig 1 to the position shown with dotted lines in fig 1.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7522865A JPH09509900A (en) | 1994-03-04 | 1995-03-03 | Safety device |
EP95912532A EP0746452A1 (en) | 1994-03-04 | 1995-03-03 | Safety device |
AU19646/95A AU1964695A (en) | 1994-03-04 | 1995-03-03 | Safety device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9400763A SE504535C2 (en) | 1994-03-04 | 1994-03-04 | Protective device |
SE9400763-0 | 1994-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995023678A1 true WO1995023678A1 (en) | 1995-09-08 |
Family
ID=20393187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1995/000220 WO1995023678A1 (en) | 1994-03-04 | 1995-03-03 | Safety device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0746452A1 (en) |
JP (1) | JPH09509900A (en) |
AU (1) | AU1964695A (en) |
SE (1) | SE504535C2 (en) |
WO (1) | WO1995023678A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100383917C (en) * | 2005-12-08 | 2008-04-23 | 北京圆合电子技术有限责任公司 | Pneumatic type platform cover-opening mechanism |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110883872A (en) * | 2019-12-17 | 2020-03-17 | 广西平南县极合科技服务有限公司 | Cutting device and application thereof in wood processing |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE107118C (en) * | ||||
DE103903C (en) * | ||||
SE13661C1 (en) * | 1902-02-01 | |||
DE1814062A1 (en) * | 1967-12-12 | 1969-10-23 | Inst Cercetari Stiintifice | Protection device for circular saws |
-
1994
- 1994-03-04 SE SE9400763A patent/SE504535C2/en not_active IP Right Cessation
-
1995
- 1995-03-03 JP JP7522865A patent/JPH09509900A/en active Pending
- 1995-03-03 EP EP95912532A patent/EP0746452A1/en not_active Ceased
- 1995-03-03 WO PCT/SE1995/000220 patent/WO1995023678A1/en not_active Application Discontinuation
- 1995-03-03 AU AU19646/95A patent/AU1964695A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE107118C (en) * | ||||
DE103903C (en) * | ||||
SE13661C1 (en) * | 1902-02-01 | |||
DE1814062A1 (en) * | 1967-12-12 | 1969-10-23 | Inst Cercetari Stiintifice | Protection device for circular saws |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100383917C (en) * | 2005-12-08 | 2008-04-23 | 北京圆合电子技术有限责任公司 | Pneumatic type platform cover-opening mechanism |
Also Published As
Publication number | Publication date |
---|---|
EP0746452A1 (en) | 1996-12-11 |
SE9400763D0 (en) | 1994-03-04 |
SE504535C2 (en) | 1997-03-03 |
AU1964695A (en) | 1995-09-18 |
JPH09509900A (en) | 1997-10-07 |
SE9400763L (en) | 1995-09-05 |
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