Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
  • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
  • B25B23/02—Arrangements for handling screws or nuts
  • B25B23/04—Arrangements for handling screws or nuts for feeding screws or nuts
  • B25B23/06—Arrangements for handling screws or nuts for feeding screws or nuts using built-in magazine
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
  • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
  • B25B21/002—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose for special purposes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
  • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
  • B25B23/02—Arrangements for handling screws or nuts
  • B25B23/04—Arrangements for handling screws or nuts for feeding screws or nuts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
  • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
  • B25B23/02—Arrangements for handling screws or nuts
  • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
  • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
  • E04D15/00—Apparatus or tools for roof working
  • E04D15/04—Apparatus or tools for roof working for roof coverings comprising slabs, sheets or flexible material
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
  • E04D15/00—Apparatus or tools for roof working
  • E04D15/04—Apparatus or tools for roof working for roof coverings comprising slabs, sheets or flexible material
  • E04D2015/042—Fixing to the roof supporting structure
  • E04D2015/045—Fixing to the roof supporting structure by nailing

Definitions

• the present invention relates to an apparatus for the semi-automatic screwing of fastening elements made of at least two preassembled parts, one of which is constituted by a support and / or fixing piece, while the other comprises a screw preengaged in a hole of the first part.
• fasteners comprising a tabular futon of internal diameter at least equal to that of the head of the screw used, one end of which is provided with a retaining collar, for example circular or rectangular, which extends substantially radially and whose other end, usually of pointed shape, has a bore narrowing of diameter smaller than that of the head of the screw.
• screwing devices comprising a magazine in which is stored a plurality of fasteners of this type, a dispenser for bring one by one the fastening elements in a screwing zone and screwing means capable of screwing the screw.
• this apparatus comprises a magazine constituted by a guiding device comprising two parallel profiled guides having two respective concavities in the form of grooves facing each other so as to delimit a substantially cruciform space comprising two closed branches in which the fasteners can engage and be guided by the side edges of the collars and two open branches in which the screws pre-engaged in the fasteners and / or drums can pass.
• the dispenser serving to deliver one by one the fasteners contained in the magazine comprises a stepped pinion rotatably mounted in the vicinity of the guide device along an axis oriented parallel to the screws and / or drums of the fasteners contained in the shop.
• This stepped pinion comprises an axially through cavity whose bottom has a coaxial hemicylindrical shape and which opens on the opposite side to the bottom, at the periphery of the pinion.
• This cavity is dimensioned so that the screw and / or the barrel of a fastener can engage.
• This pinion is rotated by a rack integral with the translational movement of the screwdriver so as to take:
• the object of the invention is therefore more particularly to eliminate these disadvantages.
• the magazine has two parallel lateral guides separated from each other by a distance slightly greater than the diameter of a drum but smaller than the width or the diameter of a collar and a central guide which extends opposite lateral guides in a plane parallel to the plane of said lateral guides, at a distance from this plane slightly greater than the maximum thickness of the collar.
• the two lateral guides are extended beyond the distributor by a curved portion for bringing the fasteners to the right of a screw well in the axis of which is disposed a movable screwdriver parallel to said axis.
• the dispenser comprises a movable drawer parallel to the plane of the lateral guides along an axis of displacement perpendicular to the latter, this drawer comprising, in its upper part, a fork adapted to overlap the two lateral guides and, in its lower part, a piece the fork, the difference in height between the fork and the support piece being at least equal to the sum of the radius (or the half-width) of the - AT -
• This dispenser is actuated so that the drawer can occupy:
• the movements of the drawer are controlled by the movements of the screwdriver / unscrewing through a conversion device vertical translation / horizontal translation.
• An additional guide member may be associated with the lateral guides downstream of the distributor to hold the fasteners whose collars have rectangular shapes oriented parallel to the axis of the lateral guides.
• a stop element may be provided at the distributor so that the polygonal or oblong collars are arranged in this direction in the gap between the fork and the support part of the drawer.
• the screw well has a height greater than the maximum height that can have a fastener, from the collar to the tip of the screw.
• the well comprises retractable retention means for retaining the collars of the fasteners until the screwing rod of the screwdriver / stripper engages in the barrel of the fastener which is is retained and comes into engagement with the head of the screw, these retention means then retracting under the effect of the pressure exerted downwards by the screw rod on the fastener.
• the collars of the fasteners are guided by two substantially vertical plates of slightly concave profile arranged one facing the other, one of these two plates being hinged in its lower part. and being biased by elastic means towards the other plate to a position in which these two plates are spaced from each other by a predetermined minimum distance.
• the apparatus according to the invention has a relatively simple structure, inexpensive and nevertheless allows a particularly reliable operation for fasteners that can have different shapes and dimensions.
• Figure 1 is a schematic axial sectional view of a fixing element used by the apparatus according to the invention.
• Figures 2 and 3 are top views showing the two main forms of collars encountered in the trade;
• Figures 4 and 5 show an apparatus according to the invention, seen from the front ( Figure 4) and viewed from the side ( Figure 5);
• Figure 6 is a schematic side view on a larger scale of the dispenser;
• Figure 7 is a front view of a drive lever used by the dispenser of Figure 6;
• Figure 8 is a perspective view of the dispenser spool
• Figure 9 is a perspective view of the lower spacer
• Figure 10 is a schematic perspective view of the screw well.
• Figures 11 and 12 are two perspective views of the upper portion of an alternative embodiment of the invention comprising a plurality of fastener magazines, Figure 11 being a rear view and Figure 12 a front view. ;
• Figure 13 is a partial view, on a larger scale of Figure 11, this view showing the connecting mechanism between the support structure of the stores and the distributor.
• the device according to the invention applies to the installation of a fastening element 1 comprising a tubular shaft 2, one end of which is provided with a retaining collar 3 while the other end, of substantially This frustoconical element has a boring narrowing 4.
• this element is made of plastic molded so as to avoid any thermal conduction bridge.
• the element 1 cooperates with a screw 5 which engages in the bore 6 of the drum 2 and passes through the bore narrowing 4.
• the head 7 of the screw 5 has a diameter substantially equal to the diameter of the bore 6. As a result, it is guided by this bore. At the end of screwing, this head 7 abuts against the bearing making the transition between the bore 6 and the bore narrowing 4.
• the bore 6 of the fut 2 is provided with one or more protuberances 8 that the head of the screw must cross, forcibly, causing a slight 2.
• This operation can be done at the factory during the pre-assembly of the screw, using a special tool. It can also be done in situ, by the operator.
• the bore narrowing 4 is itself provided with one or more axial protuberances intended to allow to obtain a screwing effect of the screw 5. Thanks to this arrangement, the passage in force of the screw 5 by the protuberances 8 of the barrel 2 can be obtained thanks to this screwing effect.
• the shapes and dimensions of the fasteners usable by the apparatus according to the invention can be very different and correspond to the ranges of fasteners of this kind currently available on the market.
• the collars of these fasteners may for example be circular ( Figure 2), oblong, polygonal ( Figure 3) or have a combination of these forms.
• the drums 2 and the screws 5 may have different lengths so that, for a given application, the user can associate a drum and a screw having the most appropriate lengths for this application.
• the screwing apparatus comprises a frame 11 comprising a base 12 reinforced by crosspieces 15, 16.
• This base 12 is mounted on two pairs of wheels 17, 17 'substantially coaxial with the end cross member 16.
• This base 12 carries two parallel columns 18, 19 substantially vertical on which slides a carriage 20 carrying a screwdriver / unscrewer 21, this carriage 20 being provided with two handles 22, 23 used to ensure the movement of the rolling device and to print vertical translation movement to the screwdriver 21.
• the carriage is also subject to an upward biasing force exerted by helical springs housed in the columns 18, 19.
• an intermediate spacer 30 having, in the plane of the columns 18, 19, a downwardly concave shape of ⁇ , this spacer comprising, at its lateral wings, two respective lateral holes in which the columns 18, 19 and a central bore for ensuring the passage of the screwing rod 31 driven by the screwdriver 21.
• This intermediate spacer cooperates with an adjustable stop consisting of two tabular sleeves screwing into each other, through which the column 19. One of these sleeves is secured to the column 19 in an adjustable position.
• the upper and intermediate spacers are interconnected by a vertical guide rod 32 on which slides a drive tube 33.
• the upper and lower spacers 25 support a fastener magazine M comprising two parallel cylindrical lateral guides 34, spaced from each other by a distance slightly greater than the diameter of a drum 2 but smaller than the maximum width (or diameter) of a collar 3 and a central guide constituted by a strip 36 which extends opposite the lateral guides 34, 35 in a plane parallel to the plane of the guides, at a distance from this plane slightly greater at the maximum thickness of the collar 3.
• the two guides 34, 35 and the strip 36 extend substantially parallel to the screw rod.
• the two lateral guides 34, 35 are extended between the intermediate spacer 30 and the lower spacer 25 by a bent portion 37 which is fixed by its lower end on either side of the slot 29.
• the intermediate spacer 30 supports a distributor D, via a U-shaped support member, 40 whose core 41 is fixed on a vertical extension of the web of the spacer 30.
• This support piece 40 ( Figure 6) comprises a wing 41 'carrying a horizontal axis 42' on which pivots a lever 42 which tilts in a vertical plane.
• One of the two arms 43 of this lever 42 carries a rod 44 which extends in the area of passage of a stop 47 carried by the carriage 20.
• the second arm 48 of this lever 42 cooperates with one of the two arms 49 of a second lever 50 mounted oscillating about a vertical axis 51 which extends into a recess formed in the wing 41 '.
• the second arm 52 of this second lever 50 is articulated to a slide valve 53 slidably mounted on the second wing 41 "of the support piece 40 so as to ensure its displacement in translation, which mechanism thus ensures a conversion of the vertical translation movement of the trolley 20 (in its stroke portion in which the stop 47 comes into contact with the rod 44) in a horizontal translational movement of the slide 53.
• the drawer 53 (FIG. 8) is constituted by a tubular section of rectangular section of which one of the main walls 54 slides in a slideway carried by the flange 41 "of the support piece 40.
• the other main wall 55 parallel to the first wall 54, extends parallel and at a short distance from the plane of the lateral guides 34, 35, at the lower end of the magazine M.
• This wall 55 is slotted by an oblique cutout 56 (substantially S-shaped having a horizontal central region and two oblique wings).
• This cutout defines on one side an upper tongue 57 which is doubled by a Z-shaped piece, 58 to form a fork intended to overlap the two lateral guides 34, 35 and, on the other side, in its lower part, a lower tongue 59 which constitutes a support piece located opposite the fork 57-58.
• the gap between the upper edge of the fork 57- 58 and the upper edge of the tongue 59 is at least equal to the sum of the radius (or semi-width) of the collar 3 and the radius of the outer surface of the collar 2.
• the actuation of the distributor D by the carriage 20 is designed so that:
• the fork 57-58 overlaps the two lateral guides 34, 35 so as to retain by its shaft 2 the fastener 1 at the bottom of the stack contained in the store M.
• La tongue 59 is then outside the passage zone delimited by the two lateral guides 34, 35 so as to release the fixing element 1 which was previously retained in the drawer 53 and to allow this fixing element 1 to down along the guides 34, 35 to be placed at the entrance of the PV screwing well.
• the dispenser D remains in this position during the screwing stroke of the fastener 1 present in the PV well.
• this stop 60 consists of a washer mounted welded to the tube 33.
• the drive of the tube 33 by the carriage 20 is effected by means of an axially adjustable stop 61 provided for in FIG. upper part of the tube 33, on which the carriage 20 is supported at the end of the race upwards.
• the fork 57-58 is again overlapping the two lateral guides 34, 35 to retain the fixing element 1 at the bottom of the stack while the element 1 which was previously retained by the tongue 59 is released and is switched to the PV screwing well.
• the fastening element in the case where its collar 3 is of polygonal shape
• the fastening element is properly oriented thanks to a fixed abutment B carried by the slide constituted by the wing 41 " of the support piece 40.
• the PV screwing well comprises (FIG. 10), in its upper part, retractable flaps hinged to the lower spacer 25 and spring-loaded in the closed position. These flaps 63 serve to temporarily retain the fasteners 1 by their collars 3 until the rod of the screwdriver 21 exerts on the fastener 1 a downward force to cause the retraction.
• the screwing rod comprises interchangeable tips of appropriate length to that of the drums of said elements.
• This PV screwing well comprises two guide plates 64, 65 substantially vertical, slightly concave profile (suitable for the shapes of the collars 3) arranged one facing the other.
• One of these two plates 65 is articulated in its lower part (articulation 66).
• the two plates 64, 65 have in their upper parts, oblique portions 67, 68 forming a flare.
• the plate 65 is biased by resilient means (springs 69) towards the other plate 64.
• the fastening elements 1 may be previously packaged in the manner described in the patent application FR No. 04 07498 filed on July 6, 2004 in the name of the Applicant, thanks to a flexible support profile having at least partly the shape of a band whose side edge is provided with a succession of notches opening laterally outwards through a narrowed opening of width less than the diameter of the barrels so that the drums can engage there and be maintained by clipping Z 1 .
• the screwing device comprises a plurality of vertical magazines (here four) M i5 M 2 , M 3 ,
• flanges Bi to B 4 consist of folded metal strips, C-shaped.
• the flanges B 4 of the lower level and those of the upper intermediate level B 2 are connected together by two respective connecting pieces 73, 74 of circular shape which extend over approximately 60 °.
• the connecting piece 73 located at the upper intermediate level has a substantially U-shaped section. It is supported by a support plate 75 with a circular edge, with the same radius of curvature as the piece 74, which extends over approximately 120 ° .
• This plate 75 which engages in the cavity of the connecting piece 73 is fixed to the top of the columns 18, 19 by means of two coaxial screws V 1 , V 2 .
• This assembly allows a circular sliding of the connecting piece 73 on the plate 75.
• a ball bearing system is provided between the upper flange of the upper connecting piece 73 and the upper face of the plate 75. This bearing involves balls that engage in a coaxial circular groove 76 of the plate 75.
• each of the magazines M 1 to M 4 is equipped with a shutter O 1 to O 4 involving two radial pins 77, 78 passing through two respective passages provided in the web of the flange B 4 of the magazine and integral with an actuating piece 79 slidably mounted with spring return 80 on a radial rod 81, integral with the flange B 4 , which extends opposite the pins 77, 78.
• This actuating piece 79 is itself provided with a vertical finger 82 intended to cooperate with a cam profile 82 'of a fixed actuating part 83 integral with the structure of the distributor D. Thanks to these provisions when a magazine M 1 to M 4 is not in the axis of the distributor D the actuating part 79 of the shutter O 1 to O 4 is pushed by the spring 80 so that the pins 77, 78 engage across the magazine passage section and retain the fasteners contained in this magazine.
• the cam profile 82 ' may comprise a notch used to mark the passage of the magazine to the right of the distributor D and temporarily hold it in this position (in the manner of a pawl).
• the screwdriver 21 is not mounted directly on the carriage 20 but on a slide 95 that is adjustable in height on the carriage 20.
• the slide 95 comprises two profiles lateral guides 96, 97 which engage on two lateral guiding tongues 83, 84 secured to the carriage 20.
• the axial positioning of the slide 95 along these tongues 83, 84 is provided by a locking mechanism involving:
• a needle mounted slidably in one of the wings of the lateral section 96, perpendicular to the plane of the tongues 83, 84, and biased towards them by a spring. The actuation of this needle is provided by means of a handle 86.
• a traction on the needle through the handle 86 so as to disassemble the hole 85 of the tongue 83 in which it was engaged then moves the slider 95 until it is in the desired position.
• the needle is then released so that it can engage in a hole 85 of the tongue 83 corresponding to this position.
• This height adjustment of the screwdriver 21 makes it possible to use fasteners of different sizes without having to modify the length of the screwing rod 31.
• the position of the holes 85 may advantageously but not exclusively correspond to the height of the main fasteners available commercially.
• the screwing rod 31 is disposed inside a coaxial tubular element ET, axially movable (vertically).
• This tabular element AND comprises a lower section 87 of inner diameter slightly greater than the diameter of the rod 31 and an upper section 88 of inner diameter slightly greater than the diameter of the end portion 89 of the nose of the screwdriver 21.
• the lower section 87 slides in a bore 98 made in a spacer 90 connecting the two lateral guide rails of the fasteners, at the end of the curved position 37 extending above the screw well.
• the section 88 comprises a flared upper flange 91. It slides in a hole made in the bottom of a well 92 secured to a connecting piece 93 of the carriage 20.
• a thrust washer 94 is disposed at the junction between the two sections 87, 88.
• the tubular element ET serves to exert pressure on the collar 3 of the fixing element 1 during its screwing.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
• Portable Nailing Machines And Staplers (AREA)
• Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
• Manufacturing Of Electrical Connectors (AREA)

Applications Claiming Priority (3)

Publications (2)

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ID=35610193

Family Applications (2)

Family Applications After (1)

Country Status (5)

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Family Cites Families (8)

• 2005
  • 2005-09-28 WO PCT/FR2005/002408 patent/WO2006035167A1/fr active Application Filing
  • 2005-09-28 EP EP05807795A patent/EP1799403B1/de not_active Not-in-force
  • 2005-09-28 AT AT05807798T patent/ATE521451T1/de not_active IP Right Cessation
  • 2005-09-28 EP EP05807798A patent/EP1796876B1/de not_active Not-in-force
  • 2005-09-28 DE DE602005025664T patent/DE602005025664D1/de active Active
  • 2005-09-28 RU RU2007116160/02A patent/RU2007116160A/ru not_active Application Discontinuation
  • 2005-09-28 RU RU2007116112/02A patent/RU2007116112A/ru not_active Application Discontinuation
  • 2005-09-28 WO PCT/FR2005/002409 patent/WO2006035168A1/fr active Application Filing
  • 2005-09-28 AT AT05807795T patent/ATE493232T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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