EP0085636B1 - Dispositif de protection pour dégauchisseuse - Google Patents

Dispositif de protection pour dégauchisseuse Download PDF

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Publication number
EP0085636B1
EP0085636B1 EP83420014A EP83420014A EP0085636B1 EP 0085636 B1 EP0085636 B1 EP 0085636B1 EP 83420014 A EP83420014 A EP 83420014A EP 83420014 A EP83420014 A EP 83420014A EP 0085636 B1 EP0085636 B1 EP 0085636B1
Authority
EP
European Patent Office
Prior art keywords
bridge
articulated
lever
shaft
planing machine
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.)
Expired
Application number
EP83420014A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0085636A1 (fr
Inventor
Armande Victorine Horvath née Dementhon
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.)
BEGEMO DIFFUSION
Original Assignee
BEGEMO DIFFUSION
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 BEGEMO DIFFUSION filed Critical BEGEMO DIFFUSION
Priority to AT83420014T priority Critical patent/ATE19989T1/de
Publication of EP0085636A1 publication Critical patent/EP0085636A1/fr
Application granted granted Critical
Publication of EP0085636B1 publication Critical patent/EP0085636B1/fr
Expired legal-status Critical Current

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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
    • B27G21/00—Safety guards or devices specially designed for other wood-working machines auxiliary devices facilitating proper operation of said wood-working machines

Definitions

  • the present invention relates to a protective device for a wood jointer, with a movable protective bridge disposed above the jointer table and making it possible to cover the part of the tool-holder shaft located in front of the workpiece guide. , means being provided for adjusting the bridge in height for the passage of the wood to be planed, and for allowing it to move vertically while remaining parallel to the table, the protective bridge being held by an element comprising a rectilinear guide in substantially vertical direction .
  • a protection device of this kind is known from DE-C-136208.
  • the device according to this document uses, for the vertical guidance of the movable protective bridge, two parallel columns ensuring the immobilization in rotation of the protective bridge, which makes the device complex and expensive.
  • control for vertical movement of the bridge is, in this known device, carried out by a set of levers crossing the machine over its entire width, which makes the device not very compact and prevents the planing of the edges of a piece of wood. .
  • the device of DE-C-136208 functions as a presser which always tends to fall and press down on the machine table.
  • a protective bridge must occupy a position located above the piece of wood to be planed, therefore adjusted in height according to the thickness of the piece of wood. When this part is brought back in order to then undergo a second passage on the tools, it passes over the bridge by applying the latter on the machine table, therefore by lowering it. The protective bridge must then return to the preset height to allow the second passage of the piece of wood. Such a function is not ensured in the device of the document cited above, where the protective bridge tends to fall off by itself, and not to go back up, after a movement.
  • the present invention aims to eliminate these drawbacks, by providing a protection device of the type under consideration, of simple and compact construction as regards the means for vertical guidance and immobilization in rotation of the protective bridge, and of good convenience. 'job, the protective bridge taking its own place at a pre-adjusted height after any movement.
  • the rectilinear guidance is carried out along a single vertical axis and is combined, for the immobilization in rotation of the protective bridge, with a maintenance by at least two levers located in a same vertical plane and interconnected by at least one intermediate articulation axis, a lever being articulated by a movable axis to the element for holding the protective bridge and another lever being articulated by a fixed axis to a support integral with the frame of the jointer, the protective bridge being automatically moved upwards to the pre-set height, under the effect of return means.
  • the guiding of the protective bridge with immobilization in rotation is ensured by a single column supplemented by two articulated levers, without the need for a second column or other means.
  • the column and the levers being located entirely in one and the same vertical plane, the device is compact and it easily adapts to one side of an existing machine. If an action tends to press the protective bridge onto the jointer table, the return means automatically return the bridge to its preset height position, as soon as this action ceases.
  • the protective bridge is fixed, by means of its holding element, at the top of a column movable vertically in a sliding guide belonging to the support integral with the frame of the jointer.
  • the levers may simply comprise a first lever articulated by a first axis either directly to the element for holding the protective bridge, or at the lower end of the column, and a second lever articulated to the first lever by a second axis and articulated to the aforementioned support by a third axis; the two levers thus form a “compass” arrangement.
  • the lever articulated by an axis to the holding element of the bridge and the lever articulated by an axis to the support integral with the frame of the jointer are linked together by means of two other levers articulated to the first, and constituting with these an articulated system like “deformable parallelogram”.
  • the levers also allow easy control of the height adjustment of the protective bridge, by providing a rotary stop cam provided with an operating lever and cooperating with one of the aforementioned levers so as to limit the upward movement of the bridge. under the effect of a return spring.
  • This return spring of the bridge can be housed in the vertically movable column so as to tend to raise it with the bridge; it can also apply its force, in the appropriate direction, on one of the levers or on one of the axes of articulation.
  • the device shown in Figures 1 and 2 comprises a support (1) fixed to the frame of the jointer which are indicated, very briefly, the table (2) and the tool shaft (3) flush with the table (2).
  • the support (1) comprises a part (4) serving as a sliding guide for a column (5) movable vertically.
  • the protective bridge (6) is fixed to the top of the column (5) by an intermediate piece (7).
  • first lever (8) is articulated by a horizontal axis (9) to the column (5) - bridge (6) - intermediate piece (7) assembly.
  • the other end of the first lever (8) is articulated by a horizontal axis (10) to one end of a second lever (11), the second end of which is articulated by a horizontal axis (12) to the support (1).
  • a return spring (13), housed in the column (5), tends to raise this column with the bridge (6).
  • a stop cam (14) is rotatably mounted on the support (1) around an axis (15) located inside the angle formed by the two levers (8, 11).
  • An operating lever (16) integral with the cam-stop (14) allows its rotation control. If the passage of a piece of wood on the return, or another accidental cause, tends to press on the bridge (6), it will come to press on the table (2) of the jointer, the column (5) descending by relative to its guide (4) by compressing the return spring (13). Then the bridge (6) returns to its initial position under the thrust of this spring (13) which raises the column (5) - bridge (6) - intermediate piece (7) assembly until the second lever (11) either stopped by the cam-stop (14).
  • Figure 1 shows this stop cam (14) stopped in an angular position allowing adjustment of the protective bridge (6) in the low position.
  • Figure 2 shows the same stop cam (14) stopped in an angular position allowing adjustment of the bridge (6) in the high position.
  • a friction system disposed between the support (1) and the stop cam (14), maintains said stop cam in the angular position chosen.
  • the first lever (8) is articulated by the axis (9) to the intermediate piece (7) which serves to maintain the protective bridge (6), and the fixed hinge pin (12) connecting the. second lever (11) to the support (1) is located below the axis (9), near the column (5).
  • Various variants may relate to the position of the articulation axis (9) of the first lever (8) on the column (5) - bridge (6) - intermediate piece (7) assembly and the position of the axis of fixed articulation (12) of the second lever (11), as well as the angle formed by the two levers (8, 11), as illustrated in FIGS. 3 to 6:
  • Figure 3 shows an embodiment in which the second lever (8) has its fixed axis (12) of articulation to the support (1) located at a point relatively distant from the column (5).
  • the variant of Figure 4 has the same feature with regard to the fixed axis (12), but the angle formed by the two levers (8, 11) is reversed.
  • the first lever (8) is articulated by the axis (9) at the lower end of the column (5) which projects under the guide part (4) of the support (1) .
  • the articulation axis (12) connecting the second lever (11) to the support (1) is here located above the aforementioned axis (9), near the column (5).
  • the fixed articulation axis (12) can be located at a point relatively distant from the column (5), as illustrated in FIG. 6.
  • the lever (8) articulated by the axis (9) to the column (5) - bridge (6) - intermediate piece (7) assembly and the lever (11) articulated by the axis (12) to the support (1) are always articulated to each other by an axis (10), but they are also linked to each other by two other articulated levers (17, 18) which form with the first levers (8, 11) a deformable parallelogram.
  • lever (8) articulated by the axis (9) to the column (5) - bridge (6) - intermediate piece (7) assembly is not directly articulated to the lever (11) articulated by the axis (12) to the support (1).
  • These levers (8, 11) are linked to each other by means of two other articulated levers (19, 20) which form with the first a deformable parallelogram.
  • FIGS. 3 to 8 The operation of the various variants according to FIGS. 3 to 8 is identical to that of the device described in detail with reference to FIGS. 1 and 2.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Bridges Or Land Bridges (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Burglar Alarm Systems (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Sowing (AREA)
EP83420014A 1982-01-26 1983-01-26 Dispositif de protection pour dégauchisseuse Expired EP0085636B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83420014T ATE19989T1 (de) 1982-01-26 1983-01-26 Schutzvorrichtung fuer hobelmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8201380A FR2520286A1 (fr) 1982-01-26 1982-01-26 Dispositif de protection sur degauchisseuse
FR8201380 1982-01-26

Publications (2)

Publication Number Publication Date
EP0085636A1 EP0085636A1 (fr) 1983-08-10
EP0085636B1 true EP0085636B1 (fr) 1986-05-28

Family

ID=9270436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83420014A Expired EP0085636B1 (fr) 1982-01-26 1983-01-26 Dispositif de protection pour dégauchisseuse

Country Status (4)

Country Link
EP (1) EP0085636B1 (enrdf_load_stackoverflow)
AT (1) ATE19989T1 (enrdf_load_stackoverflow)
DE (1) DE3363625D1 (enrdf_load_stackoverflow)
FR (1) FR2520286A1 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2553703B1 (fr) * 1983-10-19 1987-05-15 Begemo Diffusion Sarl Dispositif de protection pour degauchisseuse
DE59203301D1 (de) * 1992-05-16 1995-09-21 Schweiz Unfallversicherung Hobelschutzeinrichtung.
AT1593U1 (de) * 1996-09-27 1997-08-25 Hinkel Maschinenbau Schutzvorrichtung für ein rotierendes werkzeug einer bearbeitungsmaschine
GB2411619A (en) * 2004-03-02 2005-09-07 Black & Decker Inc Planer and thicknesser
EP1785244B1 (en) * 2005-11-11 2008-03-26 BLACK & DECKER INC. Planer and/or thicknesser comprising a guard for a cutting tool
US9114474B2 (en) 2011-04-11 2015-08-25 Lincoln Global, Inc. Accessible work cell

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE136208C (enrdf_load_stackoverflow) *
GB241702A (en) * 1924-10-10 1925-10-29 John Ferguson Improvements in and relating to planing machines
GB654613A (en) * 1948-12-03 1951-06-20 John Thomson Peat Improved cutter guard for joiners and like machines
FR1009550A (fr) * 1950-01-31 1952-05-30 Appareil de protection pour dégauchisseuse
FR1469377A (fr) * 1966-02-16 1967-02-10 Protecteur de dégauchisseuse à pont automatique
AT362567B (de) * 1979-04-18 1981-05-25 Gottfried Josef Vorrichtung zum ausfraesen von fehlerstellen in holz, insbesondere von harzgallen

Also Published As

Publication number Publication date
EP0085636A1 (fr) 1983-08-10
DE3363625D1 (en) 1986-07-03
ATE19989T1 (de) 1986-06-15
FR2520286A1 (fr) 1983-07-29
FR2520286B1 (enrdf_load_stackoverflow) 1985-03-29

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