EP4058243B1 - Dispositif de séparation, chargeur et système de fixation - Google Patents

Dispositif de séparation, chargeur et système de fixation Download PDF

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Publication number
EP4058243B1
EP4058243B1 EP20793413.4A EP20793413A EP4058243B1 EP 4058243 B1 EP4058243 B1 EP 4058243B1 EP 20793413 A EP20793413 A EP 20793413A EP 4058243 B1 EP4058243 B1 EP 4058243B1
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EP
European Patent Office
Prior art keywords
separating
fastening element
fastening
attachment
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.)
Active
Application number
EP20793413.4A
Other languages
German (de)
English (en)
Other versions
EP4058243A1 (fr
EP4058243C0 (fr
Inventor
Stefan Haag
Achim Ruf
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.)
Hilti AG
Original Assignee
Hilti AG
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Publication date
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Publication of EP4058243A1 publication Critical patent/EP4058243A1/fr
Application granted granted Critical
Publication of EP4058243C0 publication Critical patent/EP4058243C0/fr
Publication of EP4058243B1 publication Critical patent/EP4058243B1/fr
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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 separating device for separating a fastening element from a fastening element strip, a magazine attachment for a device for driving fastening elements into a substrate and a fastening system with a driving device and a magazine attachment.
  • Magazine attachments for driving devices usually comprise a separating section for a fastening element and a passage for a driving element, which drives the fastening element from the separating section into the substrate in a driving direction.
  • the fastening elements are usually stored in a magazine using a strip and transported through a transport channel of the magazine attachment into the separating section.
  • a fastening element for example a screw, which is located in the separating section, is grasped by the driving element, for example a screwdriver bit, and separated from the strip.
  • the empty strip is transported further from the separating section and protrudes more and more from the magazine attachment.
  • EP 0 166 303 A1 describes an impact tool for fasteners that are connected to a retaining strap to form a fastener strip.
  • a guide sleeve contains a A cutting knife is arranged, with which the retaining strap which has been freed from the fastening devices and which hinders the handling of the impact device can be cut off.
  • US 5 138 913 A describes an automatic screw feed mechanism for an automatic screwing device.
  • a gear transports one screw in front of a screw bit when the screw feed mechanism is placed on a substrate.
  • the gear is reset when the screw feed mechanism is withdrawn from the substrate.
  • the magazine screwing device has a conveyor device for an exchangeable belt with screws.
  • the screws are held by their heads on the belt and their tips protrude from the belt.
  • a guide sleeve has a deflection edge at which the belt is deflected so much that the screw heads can be released from the belt.
  • EP 3 290 159 A1 describes a tape winding machine that is used to wind up a tape that has been freed from screws. This is intended to reduce the risk of tripping for a tool operator.
  • US 4 014 488 A describes a screw feeder for a power screwdriver.
  • a strip of screws is fed from a magazine along a feed path through a device nose.
  • a latch engages the strip of screws to transport the screws one by one into a driving position.
  • a separating device for separating a fastening element from a fastening element strip, with a receptacle in which the fastening element is accommodated, wherein the fastening element defines a fastening direction in which the fastening element is intended to be driven into a substrate, with a transport channel having an inlet opening and an outlet opening for a guided transport of the Fastener strip in a transport direction from the inlet opening to the outlet opening, wherein the transport channel has a separating section in which the fastener is separated from the fastener strip in a separating direction, wherein the transport channel between the separating section and the outlet opening has a section that twists around the transport direction in order to cause a torsion of the fastener strip during its transport from the separating section to the outlet opening.
  • This torsion tilts a bending axis of a possible bending of the empty fastener strip protruding from the outlet opening, so that the fastener strip does not bend back onto the separating device. This reduces or prevents disruptions to work processes with the separating device.
  • An advantageous embodiment is characterized in that the singling direction and the fastening direction coincide.
  • a further advantageous embodiment is characterized in that the singling direction and the transport direction are oriented perpendicular to one another in the singling section.
  • An advantageous embodiment is characterized in that the transport channel twists in the twisting section by a torsion angle which is between 1° and 90°.
  • the torsion angle is preferably between 2° and 45°, particularly preferably between 3° and 30°.
  • the transport channel in the twisting section comprises two opposing guide elements for guiding the fastening element strip, which together twist around the transport direction.
  • the guide elements preferably extend from the separating section to the outlet opening, particularly preferably from the inlet opening to the outlet opening.
  • the guide elements also preferably comprise a guide groove and/or a guide web.
  • the guide elements also preferably define a strip plane.
  • the separating device has a passage for a separating element, which separates the fastening element from the fastening element strip in the separating direction.
  • the separating device is inserted into a magazine attachment for a device for driving fastening elements into a substrate
  • the magazine attachment comprises an attachment part which has a connection region for connecting the magazine attachment to the device, and a pressing part which has a contact region for placing the magazine attachment on the substrate, wherein the attachment part and the pressing part are held displaceably against one another along a displacement path, wherein the displacement path is limited by a normal position and a pressing position.
  • attachment part has a guide into which the pressing part can be inserted along the displacement path.
  • pressing part has a guide into which the attachment part can be inserted along the displacement path.
  • An advantageous embodiment is characterized in that the pressing part has a transport mechanism by means of which the fastening element strip can be transported in the transport direction when the pressing part is displaced relative to the attachment part from the normal position into the pressing position and/or vice versa.
  • An advantageous embodiment is characterized in that the magazine attachment is inserted into a fastening system comprising a device for driving fastening elements into a substrate, wherein the connecting region of the attachment part can be connected to the driving device.
  • the driving device is preferably hand-held.
  • the driving device is also preferably designed as a drill or screwdriver.
  • Fig.1 shows a magazine attachment 130, which forms a fastening system together with a device (not shown), for example a hand-held cordless screwdriver, for driving fastening elements 115 in the form of screws into a substrate.
  • the magazine attachment in turn comprises an attachment part 140 with a connecting area 145 for connecting the magazine attachment 130 to the driving device and a pressing part 150 with a contact area 155 for placing the magazine attachment 130 on a substrate.
  • the pressing part 150 has a Fig.1 concealed receptacle for the fastening element 115 and a passage (not shown) for a driving element designed, for example, as a screw drive.
  • the driving element is exchangeably fastened in a receiving chuck (not shown) of the device and is driven in rotation by the driving device in order to drive the fastening element 115 out of the receptacle into the substrate.
  • the fastening elements 115 are designed as screws in the present embodiment.
  • the fastening elements are designed as screw anchors, bolts, screw bolts, nails, rivets or the like and are driven in rotation or linearly into the substrate.
  • the attachment part 140 has a guide in its interior, into which the rail-like pressing part 150 can be pushed along a displacement path.
  • the pressing part has a guide into which the pressing part can be pushed.
  • the displacement path extends from a normal position to a pressing position.
  • the attachment part 140 and the pressing part 150 cannot be pushed further away from or towards one another than up to these two end positions and are held together along the entire displacement path including the two end positions.
  • a pressing spring arranged in the guide is compressed when the magazine attachment 130 is pressed against the base and ensures that the attachment part 140 and the pressing part 150 move into the normal position when the magazine attachment 130 is lifted off the base.
  • the magazine attachment 130 comprises a transport mechanism (not shown in detail) for transporting a fastening element strip 100 carrying the fastening elements 115 in a transport direction 105, wherein the transport mechanism is actuated, for example, by pressing the magazine attachment 130 against the substrate and/or by lifting the magazine attachment 130 from the substrate.
  • a transport mechanism (not shown in detail) for transporting a fastening element strip 100 carrying the fastening elements 115 in a transport direction 105, wherein the transport mechanism is actuated, for example, by pressing the magazine attachment 130 against the substrate and/or by lifting the magazine attachment 130 from the substrate.
  • the fastening element strip 100 has a plurality of receptacles arranged one behind the other in the transport direction, in each of which a fastening element 115 is accommodated.
  • the magazine attachment 130 in particular the pressing part 150, comprises a separating device 200 for separating one fastening element 115 from the fastening element strip 100.
  • the separating device 200 comprises a transport channel 210 having an inlet opening 220 and an outlet opening 230 for a guided transport of the fastening element strip 100 in the transport direction 105 from the inlet opening 220 to the outlet opening 230, wherein in Fig.1 an outside of the transport channel 210 can be seen.
  • the separating device 200 has a passage for the driving element, which separates the fastening element from the fastening element strip in a separating direction and drives it out of the receptacle into the substrate.
  • the driving element thus forms a separating element, so that the separating direction and a fastening direction defined by the fastening element 115 coincide.
  • the fastening element 115 has, for example, a shaft with a longitudinal direction which defines the fastening direction.
  • the fastening element 115 has a head at one end and/or a tip at an opposite end.
  • the separating direction and the fastening direction differ from one another and are, for example, oriented perpendicular to one another.
  • the Fig. 2 and 3 each show a first half-shell 240 ( Fig.2 ) and a second half shell 250 ( Fig.3 ), which together form the transport channel 210, the inner sides of which are Fig. 2 and 3 can be seen.
  • the transport channel 210 has a separating section 260 between the inlet opening 220 and the outlet opening 230, in which a fastening element 115 is separated from the fastening element strip 100 in a separating direction 265. Furthermore, the transport channel 210 has a section 270 twisting around the transport direction 105 between the separating section 260 and the outlet opening 230.
  • the first half shell 240 ( Fig.2 ) has a first guide element 245 designed as a guide groove between two guide webs, which extends along the transport channel 210 from the inlet opening 220 to the outlet opening 230.
  • the second half-shell 250 ( Fig.3 ) has a second guide element 255 designed as a guide groove between two guide webs, which also extends along the transport channel 210 from the inlet opening 220 to the outlet opening 230.
  • the first guide element 245 and the second guide element 255 are arranged opposite one another and define a strip plane for a fastening element strip 100 guided therein.
  • the first guide element 245 and the second guide element 255 run parallel to one another, so that the fastening element strip 100 is guided torsion-free during transport along the transport channel 210. This ensures trouble-free separation of the fastening element 115 in the separating section 260.
  • the first guide element 245, the second guide element 255 and thus also the transport direction 105 are curved in such a way that the fastening element strip 115 exits the outlet opening 230 with a movement component away from the substrate. This reduces the risk of the fastening element strip 100 getting between the magazine attachment 130 and the substrate after exiting the outlet opening 230.
  • the radii of curvature of the first guide element 245 and the second guide element 255 differ in the twisting section 270, so that the first guide element 245 and the second guide element 255 together, and thus also the transport channel 210, are bent by a torsion angle A ( Fig.4 ) of, for example, 8° about the transport direction 105.
  • This causes a torsion of the strip plane defined by the first guide element 245 and the second guide element 255 between the separating section 260 and the outlet opening 230 and thus a torsion of the fastening element strip 100 during its transport from the separating section 260 to the outlet opening 230. Due to this torsion, the fastening element strip 100 does not bend back onto the magazine attachment 130, so that disruptions to work processes with the fastening system are reduced.
  • Fig.4 shows the magazine attachment 130 in a top view.
  • the strip plane 280 defined by the first guide element 245 and the second guide element 255 is inclined at the outlet opening 230 by the torsion angle A with respect to a plane 290 oriented perpendicular to the singulation direction 265.
  • the present invention has been illustrated using the example of a separating device of a magazine attachment for a driving device. However, it should be noted that the separating device according to the invention is also suitable for other applications.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (14)

  1. Dispositif de séparation permettant de séparer un élément de fixation (115) d'une bande d'éléments de fixation (100) comportant un logement dans lequel l'élément de fixation (115) est logé, dans lequel l'élément de fixation (115) définit une direction de fixation dans laquelle l'élément de fixation (115) est destiné à être enfoncé dans un substrat, comportant un canal de transport (210), présentant une embouchure d'entrée (220) et une embouchure de sortie (230), pour un transport guidé de la bande d'éléments de fixation (100) dans une direction de transport de l'embouchure d'entrée (220) à l'embouchure de sortie (230), dans lequel le canal de transport (210) présente une portion de séparation (260) dans laquelle l'élément de fixation (115) est séparé de la bande d'éléments de fixation (100) dans une direction de séparation, caractérisé en ce que le canal de transport (210) présente, entre la portion de séparation (260) et l'embouchure de sortie (230), une portion (270) en torsion autour de la direction de transport.
  2. Dispositif de séparation selon la revendication 1, dans lequel la direction de séparation et la direction de fixation coïncident.
  3. Dispositif de séparation selon l'une des revendications précédentes, dans lequel la direction de séparation et la direction de transport sont orientées perpendiculairement l'une à l'autre dans la portion de séparation (260).
  4. Dispositif de séparation selon l'une des revendications précédentes, dans lequel le canal de transport (210) est mis en torsion dans la portion (270) en torsion suivant un angle de torsion, lequel vaut entre 1° et 90°, en particulier entre 2° et 45°, en particulier entre 3° et 30°.
  5. Dispositif de séparation selon l'une des revendications précédentes, dans lequel le canal de transport (210) présente, dans la portion (270) en torsion, deux éléments de guidage (245, 255) opposés l'un à l'autre pour un guidage de la bande d'éléments de fixation (100), lesquels sont en torsion ensemble autour de la direction de transport.
  6. Dispositif de séparation selon la revendication 5, dans lequel les éléments de guidage (245, 255) s'étendent de la portion de séparation (260) à l'embouchure de sortie (230), en particulier de l'embouchure d'entrée (220) à l'embouchure de sortie (230).
  7. Dispositif de séparation selon l'une des revendications 5 à 6, dans lequel les éléments de guidage (245, 255) comprennent une rainure de guidage et/ou une nervure de guidage.
  8. Dispositif de séparation selon l'une des revendications 5 à 7, dans lequel les éléments de guidage (245, 255) définissent un plan de bande.
  9. Dispositif de séparation selon l'une des revendications précédentes, présentant un passage pour un élément de séparation, lequel sépare l'élément de fixation (115) de la bande d'éléments de fixation (100) dans la direction de séparation.
  10. Chargeur pour un dispositif permettant d'enfoncer des éléments de fixation (115) dans un substrat, comportant une partie saillante (140), laquelle présente une région de liaison servant à la liaison du chargeur au dispositif, et comportant une partie de pression (150), laquelle présente une région d'appui servant à l'appui du chargeur sur le substrat, dans lequel la partie saillante (140) et la partie de pression (150) sont retenues l'une contre l'autre de manière déplaçable le long d'un trajet de déplacement, dans lequel le trajet de déplacement est limité par une position normale et une position de pression, et dans lequel le chargeur comprend un dispositif de séparation selon l'une des revendications précédentes.
  11. Chargeur selon la revendication 10, dans lequel la partie saillante (140) présente un guide dans lequel la partie de pression (150) peut être insérée le long du trajet de déplacement.
  12. Chargeur selon la revendication 10, dans lequel la partie de pression (150) présente un guide dans lequel la partie saillante (140) peut être insérée le long du trajet de déplacement.
  13. Chargeur selon l'une des revendications 10 à 12, dans lequel la partie de pression (150) présente un mécanisme de transport à l'aide duquel la bande d'éléments de fixation (100) peut être transportée dans la direction de transport, lorsque la partie de pression (150) est déplacée par rapport à la partie saillante (140) de la position normale à la position de pression et/ou inversement.
  14. Système de fixation, comprenant un dispositif, en particulier guidé à la main, servant à l'enfoncement d'éléments de fixation (115) dans un substrat, en particulier perceuse ou visseuse, et un chargeur selon l'une des revendications 10 à 13, dans lequel la région de liaison peut être reliée au dispositif.
EP20793413.4A 2019-11-12 2020-10-27 Dispositif de séparation, chargeur et système de fixation Active EP4058243B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19208430.9A EP3822027A1 (fr) 2019-11-12 2019-11-12 Dispositif de séparation, chargeur et système de fixation
PCT/EP2020/080141 WO2021094084A1 (fr) 2019-11-12 2020-10-27 Dispositif de séparation, accessoire de magasin et système de fixation

Publications (3)

Publication Number Publication Date
EP4058243A1 EP4058243A1 (fr) 2022-09-21
EP4058243C0 EP4058243C0 (fr) 2024-04-24
EP4058243B1 true EP4058243B1 (fr) 2024-04-24

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ID=68581168

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19208430.9A Withdrawn EP3822027A1 (fr) 2019-11-12 2019-11-12 Dispositif de séparation, chargeur et système de fixation
EP20793413.4A Active EP4058243B1 (fr) 2019-11-12 2020-10-27 Dispositif de séparation, chargeur et système de fixation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19208430.9A Withdrawn EP3822027A1 (fr) 2019-11-12 2019-11-12 Dispositif de séparation, chargeur et système de fixation

Country Status (4)

Country Link
EP (2) EP3822027A1 (fr)
KR (1) KR20220092898A (fr)
TW (1) TW202132060A (fr)
WO (1) WO2021094084A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014488A (en) * 1973-11-05 1977-03-29 Duo-Fast Corporation Fastener feed apparatus and method
DE3423578A1 (de) * 1984-06-27 1986-01-30 Karl M. Reich Maschinenfabrik GmbH, 7440 Nürtingen Einschlaggeraet fuer befestigungsmittel
US5138913A (en) * 1991-09-24 1992-08-18 Abraham Chen Automatic screw feeding mechanism for an automatic screw driving device
DE19625453A1 (de) * 1995-06-30 1997-01-02 Olaf Zahl Magazin-Schraubvorrichtung für eine Handschraubmaschine
SE541414C2 (sv) * 2016-09-01 2019-09-24 Ruben Haegglunds Maskin Ab Bandupprullare

Also Published As

Publication number Publication date
EP4058243A1 (fr) 2022-09-21
KR20220092898A (ko) 2022-07-04
EP4058243C0 (fr) 2024-04-24
WO2021094084A1 (fr) 2021-05-20
EP3822027A1 (fr) 2021-05-19
TW202132060A (zh) 2021-09-01

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