EP0573894B1 - Vorschubeinrichtung an einem Eintreibwerkzeug zum Zuführen von Befestigungsmitteln, insbesondere Schrauben - Google Patents

Vorschubeinrichtung an einem Eintreibwerkzeug zum Zuführen von Befestigungsmitteln, insbesondere Schrauben Download PDF

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Publication number
EP0573894B1
EP0573894B1 EP93108901A EP93108901A EP0573894B1 EP 0573894 B1 EP0573894 B1 EP 0573894B1 EP 93108901 A EP93108901 A EP 93108901A EP 93108901 A EP93108901 A EP 93108901A EP 0573894 B1 EP0573894 B1 EP 0573894B1
Authority
EP
European Patent Office
Prior art keywords
supply strip
sprocket
mouthpiece
driving
strip
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 - Lifetime
Application number
EP93108901A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0573894A1 (de
Inventor
Ewald Hornung
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.)
Helfer and Co KG
Original Assignee
Helfer and Co KG
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 Helfer and Co KG filed Critical Helfer and Co KG
Publication of EP0573894A1 publication Critical patent/EP0573894A1/de
Application granted granted Critical
Publication of EP0573894B1 publication Critical patent/EP0573894B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B25B23/045—Arrangements for handling screws or nuts for feeding screws or nuts using disposable strips or discs carrying the screws or nuts

Definitions

  • the invention relates to a feed device according to the preamble of claim 1, cf. US-A-5 083 483.
  • Feed devices for feeding fasteners to driving tools are known in a wide variety of designs. They generally work with step-by-step switching mechanisms which convey the fastening means arranged at certain intervals on a supply strip into a position in which they are aligned with the tool and can thus be driven into a workpiece.
  • US Pat. No. 4,404,877 discloses a machine-driven screwdriver with a feed device.
  • the step-by-step mechanism here consists of a shift lever which is pivotally mounted in a pivot point.
  • the pivoting movement of the shift lever is controlled by means of a pin which is guided in a groove and is arranged at its rear end.
  • the front end of the shift lever carries, pivotally mounted, a feed finger which is biased by a spring. This When the switching lever is pivoted, the feed finger grips behind the next screw fastened on the supply strip and conveys this when the switching lever is pivoted back in front of an insertion opening.
  • the feed device just described consists of a large number of interacting parts. It is therefore complex in terms of production technology and prone to failure.
  • DE-PS 25 41 046 shows a feed device with a stepping mechanism in the form of a rung wheel, the rungs of which engage in edge recesses in the supply strip.
  • This sprocket can be coupled to a ratchet via a ratchet clutch.
  • recesses are worked into the two rung disks of the rung wheel, the center points of which are distributed over the circumference of a circle.
  • lugs engage in these recesses and are mounted in the ratchet.
  • the ratchet wheel is under the action of a spring which enables the coupling to be released briefly when the mouthpiece moves back into the starting position.
  • US-PS 5,083,483 shows a feed device similar to the already mentioned DE-PS 25 41 046 on a driving tool, wherein a swivel joint is mounted in the mouthpiece, at the end of which facing the supply strip the sprocket wheel is articulated.
  • the articulation is indirect, using a ratchet wheel that works with the rung wheel.
  • a control pin is provided, which is movably mounted in a control groove.
  • the object of the invention is to simplify the known devices so that they are limited to a minimum of individual parts and are therefore inexpensive and reliable.
  • the swivel joint is designed as a two-armed lever on the arm facing the storage strip, the sprocket wheel is rotatably mounted and on the other arm of the control pin is arranged and that a lock is provided which locks the sprocket wheel in the driving position of the screw during the transport of the supply strip.
  • the main advantage of the invention compared to the prior art lies primarily in the absence of a ratchet clutch with ratchet clutch, which is extremely favorable for operational but also economic reasons.
  • a quick glance at the drawing reveals that the principle of simplification is pushed to the extreme. As a result, the number of wearing parts is limited to a minimum, so that the service life is increased accordingly.
  • the reduction in the individual parts of the device to a minimum also has a very favorable effect on the total weight.
  • Another advantage is the relatively large radius of the supply strip in the wrap-around area of the rung wheel; this radius corresponds to the distance between the cross pin and the rung of the rung wheel closest to the supply strip. As a result, the supply strip is much less stressed during transport than in the conventional devices, so that the same distances between the consecutive recesses in the supply strip can always be expected.
  • the rung wheel consists of two spaced-apart rung disks which are connected to one another via an axis.
  • a locking mechanism is expediently provided in the mouthpiece, which, by engaging in the edge recesses of the supply strip, prevents the same from moving against its transport direction.
  • the screwdriver 2 is arranged in a box-shaped longitudinal guide part 3.
  • a longitudinally displaceable mouthpiece 4 is also mounted, which is under the action of one or more springs 5 which engage in corresponding recesses 6 in the mouthpiece 4 and strive to move it to the left in FIG. 1 of the drawing.
  • a step-by-step mechanism for the step-by-step transport of the screws 7 is mounted in the screw-in position in the mouthpiece 4.
  • This stepping mechanism is designed as a sprocket rotatably mounted in the mouthpiece 4 with two rung disks 8, 9.
  • the rungs 8a, 9a engage in edge recesses 10 of a supply strip 11 (FIG. 8), as is the case, for example, with a film transport roller of a camera.
  • In the supply strip 11 there are provided tabs 13 around a recess 12 which engage under the heads 7a of the screws 7 inserted in the supply strip 11.
  • the supply strip 11 suitably consists of elastic plastic.
  • a recess 4a is provided, into which the screw 7 comes to lie before screwing in.
  • a two-armed lever which is pivotable about a transverse pin 14 is mounted, on the arm 15 facing the supply strip 11 the sprocket is rotatably mounted and on the other arm 16 a control pin 17 is arranged, which cooperates with a control groove.
  • This control groove is incorporated in a strip 18 which is arranged in the longitudinal guide part 3 and is mounted in a stationary manner in the latter.
  • the control pin 17 forms the actuator of a stepping mechanism.
  • control groove has a control section 19 which runs obliquely to the longitudinal direction of the guide part 3 and which merges into a horizontal recess in the strip 18 which is open towards the bottom.
  • a recess 20 is provided in the side wall of the mouthpiece 4, which enables a free movement of the control pin 17 even when the two-armed lever is pivoted.
  • the two rung disks 8, 9 are connected to one another via an axis 21 which is received by a bearing in the arm 15 of the swivel joint.
  • Figures 4, 6 and 7 show a lock which locks the spur wheel in the driving position of the screw 7.
  • This lock can take many different forms.
  • the embodiment shown is a locking mechanism with two bolts under the action of springs, which engage in the locking position in recesses in the side surfaces of the two rung panes 8, 9.
  • the Storage takes place in the arm 15 of the swivel joint.
  • a locking mechanism 22 is provided which, by engaging in the edge recesses 10 of the supply strip 11, prevents the latter from moving counter to its transport direction.
  • the locking mechanism 22 consists of a spring-loaded latch.
  • a stop 23 which is adjustable and lockable in the longitudinal direction is provided for setting the device to different screw lengths.
  • an adjustable stop 24 is mounted, against which the mouthpiece 4 rests after the screwing process has ended, thereby releasing the coupling between the screwdriver 2 on the one hand and the drive shaft of the driving tool on the other.
  • the stop 24 is adjusted via an adjusting ring 25.
  • the driving tool works as follows: First, the supply strip 11 filled with screws 7 is inserted into the mouthpiece 4 as shown in FIG. 2 of the drawing.
  • the locking mechanism 22 engages in the first edge recess 10 located at the front end of the supply strip 11.
  • the rungs 8a, 9a of the sprocket engage in the corresponding edge recesses 10 of the supply strip 11.
  • the mouthpiece 4 By pressing the stop 23 at the front end of the mouthpiece 4 against the workpiece, which is not shown in the drawing for the sake of clarity, the mouthpiece 4 is moved to the right against the force of the spring 5 in the drawing. During this movement, the control pin 17 is moved along the obliquely extending control section 19 of the strip 18, with the result that the swivel joint is pivoted clockwise, so that the sprocket wheel advances the supply strip 11 equipped with screws 7 by one switching step. The sprocket is locked by the locking mechanism.
  • the screwdriver 2 engages in the cross recess in the screw head 7 and straightens the screw 7.
  • the screw 7 is then brought over the corresponding recess 12 in the supply strip 11 by bending back the tabs 13 into the recess of the mouthpiece 4 and screwed into the workpiece.
  • the spring 5 moves the mouthpiece 4 back into the starting position (FIG. 1).
  • the control pin 17 now moves into the control section 19 which extends obliquely to the longitudinal direction of the guide part 3 in the strip 18, so that the swivel joint pivots in the counterclockwise direction.
  • the rungs 8a, 9a of the sprocket engage in the next edge recess 10 of the supply strip 11.
  • the locking mechanism 22 prevents the same from sliding back against its transport direction. The next transport and screwing process is hereby initiated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Transmission Devices (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Discharge By Other Means (AREA)
EP93108901A 1992-06-11 1993-06-03 Vorschubeinrichtung an einem Eintreibwerkzeug zum Zuführen von Befestigungsmitteln, insbesondere Schrauben Expired - Lifetime EP0573894B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4219095 1992-06-11
DE4219095A DE4219095C1 (de) 1992-06-11 1992-06-11 Vorschubeinrichtung an einem Eintreibwerkzeug zum Zuführen von Befestigungsmitteln, insbesondere Schrauben

Publications (2)

Publication Number Publication Date
EP0573894A1 EP0573894A1 (de) 1993-12-15
EP0573894B1 true EP0573894B1 (de) 1996-03-06

Family

ID=6460780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93108901A Expired - Lifetime EP0573894B1 (de) 1992-06-11 1993-06-03 Vorschubeinrichtung an einem Eintreibwerkzeug zum Zuführen von Befestigungsmitteln, insbesondere Schrauben

Country Status (7)

Country Link
US (1) US5402695A (enrdf_load_stackoverflow)
EP (1) EP0573894B1 (enrdf_load_stackoverflow)
JP (1) JPH0679639A (enrdf_load_stackoverflow)
AT (1) ATE134916T1 (enrdf_load_stackoverflow)
CA (1) CA2097859A1 (enrdf_load_stackoverflow)
DE (2) DE4219095C1 (enrdf_load_stackoverflow)
TW (1) TW259738B (enrdf_load_stackoverflow)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5934162A (en) * 1993-02-17 1999-08-10 Habermehl; G. Lyle Screwdriver with dual cam slot for collated screws
IT1273265B (it) * 1994-03-22 1997-07-07 Nikema Srl Dispositivo per il fissaggio di viti nastrate con alimentatore automatico
DE19526543C2 (de) * 1994-07-22 1998-03-12 Max Co Ltd Einrichtung zum Schraubenfestziehen
JP2940416B2 (ja) * 1994-10-06 1999-08-25 マックス株式会社 連結ネジ用ネジ締め機におけるネジ供給装置
JPH09285972A (ja) * 1996-04-18 1997-11-04 Hitachi Koki Co Ltd ねじ締め工具
DE19731948C2 (de) * 1996-07-26 2000-06-21 Makita Corp Schraubenförderer in einem kontinuierlich arbeitenden Schraubendrehwerkzeug
US6145725A (en) * 1997-10-09 2000-11-14 Allan Omli, L.L.C. Fastener driver cap feeder assembly
US20030057248A1 (en) * 1999-09-10 2003-03-27 Bruins Roger C. Automatic washer feeder for automatic nailer
JP3086438B2 (ja) * 1998-04-06 2000-09-11 有限会社新城製作所 ねじ打込み装置
US6779700B2 (en) 2000-02-18 2004-08-24 National Nail Corp. Cap assembly and cap feeder for automatic fastener driver
US6296166B1 (en) * 2001-01-30 2001-10-02 Shih Chang Huang Belt feeding device for stapler
US20030218046A1 (en) * 2002-05-24 2003-11-27 Mangone Peter G. Fastening device, fastening system and related methods
US20060108389A1 (en) * 2002-09-18 2006-05-25 Alan Phillips Pinion nail verification assembly
US6701811B1 (en) * 2002-11-15 2004-03-09 Basso Industry Corp. Screw feeding device
US7134367B2 (en) * 2002-12-09 2006-11-14 Milwaukee Electric Tool Corporation Fastener feeding system
US6676001B1 (en) * 2003-03-20 2004-01-13 Diing-Shen Chen Screw positioning device for a screw driving gun
US7082857B1 (en) * 2003-10-31 2006-08-01 Senco Products, Inc. Sliding rail containment device for flexible collated screws used with a top feed screw driving tool
US20060169737A1 (en) * 2005-01-31 2006-08-03 Wen-Sheng Huang Positionoing device for electric nailers
US7232050B2 (en) * 2005-02-21 2007-06-19 Allan Omli, Llc Manually actuated fastener driver with fastener cap reservoir and advancement mechanism
JP4483683B2 (ja) * 2005-04-28 2010-06-16 日立工機株式会社 連ねじドライバ
DE102005000150A1 (de) * 2005-11-09 2007-05-10 Hilti Ag Befestigungsmittel-Zuführeinrichtung für kraftbetriebene Eintreibgeräte
DE102007026552B4 (de) 2007-06-08 2010-04-01 Helfast Gmbh & Co. Kg I.G. Vorschubeinrichtung für ein Eintreibwerkzeug zum Zuführen von Befestigungsmitteln, insbesondere Schrauben
CN101959638B (zh) * 2008-03-13 2012-09-05 本田技研工业株式会社 螺栓拧紧方法、螺栓拧紧装置、螺栓供应方法和螺栓供应装置
DE102011077433A1 (de) 2011-06-10 2012-12-13 Hilti Aktiengesellschaft Eintreibelement, Transporteinrichtung und Eintreibvorrichtung
DE102011089952A1 (de) 2011-12-27 2013-07-11 Ejot Baubefestigungen Gmbh Vereinzelereinheit
US9616557B2 (en) 2013-03-14 2017-04-11 Black & Decker Inc. Nosepiece and magazine for power screwdriver
CN107553116A (zh) * 2017-10-10 2018-01-09 苏州华维乐自动化科技有限公司 一种转盘式上料锁付装置
US11000926B2 (en) * 2017-12-20 2021-05-11 Penn Automotive, Inc. Fastener feed head
CN109290766B (zh) * 2018-11-30 2024-11-26 天津市龙意达机械制造有限公司 用于射钉制作的加套齿圈装置
US12365066B2 (en) 2020-10-14 2025-07-22 Simpson Strong-Tie Company Inc. Fastener installation systems and adapters

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541046C2 (de) * 1975-09-15 1982-10-14 Feinwerkbau Helfer & Co KG, 3261 Möllenbeck Vorschubeinrichtung an einem Eintreibwerkzeug zum Zuführen von Befestigungsmitteln, insbesondere Schrauben
DE2641828C3 (de) * 1976-09-17 1981-03-26 Karl M. Reich Maschinenfabrik GmbH, 72622 Nürtingen Eintreibgerät für zu einem Streifen verbundene Schrauben o.dgl.
AU544421B2 (en) * 1981-02-23 1985-05-23 Nisco Inc. Screw feeding apparatus
US4404877A (en) * 1981-10-09 1983-09-20 Sanyo Industries, Ltd. Power-driven screwdriver
US5083483A (en) * 1991-01-02 1992-01-28 Santomi Shoji Co., Ltd. Screw positioning device
DE9207847U1 (de) * 1992-06-11 1992-09-17 Helfer & Co KG, 3260 Rinteln Vorschubeinrichtung an einem Eintreibwerkzeug zum Zuführen von Befestigungsmitteln, insbesondere Schrauben

Also Published As

Publication number Publication date
US5402695A (en) 1995-04-04
EP0573894A1 (de) 1993-12-15
JPH0679639A (ja) 1994-03-22
ATE134916T1 (de) 1996-03-15
CA2097859A1 (en) 1993-12-12
DE4219095C1 (de) 1993-12-16
DE59301766D1 (de) 1996-04-11
TW259738B (enrdf_load_stackoverflow) 1995-10-11

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