DE2439073A1 - RELEASE DEVICE FOR THE MAGAZINE OF A TOOL FOR DRIVING IN FASTENING ELEMENTS - Google Patents

Description

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SIGNODE C0RP0RATI0I:
Glenview, Illinois / USA August 14, 1974

Release device for the magazine of a tool for driving in fastening elements

The invention "relates to tools for driving Fasteners and in particular an improved device for automatically opening the magazine for in the event that a fastener is deformed and jammed in this, so that easy elimination of the deformed fastener is made possible.

An existing problem with all driving tools of fastening elements is the inevitable occasional deformation and the resulting 7-point

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clamping of a fastening element within the tool, in particular within the outlet channel from which a fastening element Usually being ejected from the tool · You can possibly cause such a jam or blockages are known and numerous, for example a hard point in the workpiece or a defective fastening element, however, the resulting clogging and work interruption is independent of the Cause always the same ·· especially in lall- τοη especially Powerful tools that generate considerable forces can also create undue deformation loads lead to such blockages or jamming on parts of the tool *

Up to now, an extremely inconvenient and time-consuming disassembly of the tool was necessary in order to obtain the deformed fastener How to get in and how to remove it · There have been a number of different people in the recent past Institutions suggested to facilitate this access « Examples of such devices were closure components in front of the guide channel of the fastening elements and usually on opposite sides of the same rom magazine that contains and feeds the fastening elements Ser-like closure components are releasable from the tool in order to expose the guide channel so that the rerformte Fastener can be eliminated · Sa sich riele these locking components are difficult to open in practice Have proven when a deadlock occurred, some τοη them were trained so that when they occurred a jamming without a handle by the user τοη loosen the rest of the tool

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However, none of these attempts have proven to be satisfactory. Ss were additional tools required to return the known covers to their operating position · Many of these known devices also used complicated and quickly wearing devices, or numerous small components, which exclusively ensure the maintenance of the correct tolerances and a constant release gear Difficult designed with the predetermined amount of internal forces · This has to the further disadvantage led to an increase in Palechaussungen, which with a Wear and tear and a further interruption in normal work processes «

The present hiring creates a tool for driving fasteners in which the magazine is in response to the deformation of a fastener in the guide channel automatically opens to an unobstructed To provide access to the deformed fastener and to remove it «The tool has a novel Means for releasing the magazine of increased simplicity and reliability with no additional Requires tools, and which is very quickly in its operating position can be returned

The novel tool includes a housing containing a sump area with a rabbit assembly and a magazine for successive feeding of the with the tool Fastening elements to be driven in »A device is provided to secure the magazine against the housing, a movement of the magazine between a position feeding the fastening elements close to the handle

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senbaugruppe and an Ik distance τοη these located disengaged position allows

Ee is also a link device sum releasable Locking of the magazine in relation to the housing in the feeding position Provided during normal operation of the tool, however, if a fastener is deformed is ejected cleanly instead of by the drive mechanism cn, the locking device speaks the τοη forces exerted on the deformed fastener to move the magazine out «under the influence of this Forces then the magazine moves τοη the feed position into the disengaged position «

In this way the deformed fastening element is exposed and it can easily be removed from the tool can be removed · whereupon the magazine is immediately moved back into its feed position and normal work again can be recorded «The operation of the tool is automatic, and it is made possible by an uncomplicated set-up of unusual reliability, and compared to conventional tests with a greatly simplified method of operation causes «

You hiring is shown below with reference to a preferred embodiment shown in the drawings explained in more detail «It shows:

Pig «1 is a partial side view of a tool for driving fasteners in FIG Operating state, with the magazine in the position for feeding the fastening elements is located;

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Figure 2 is a partial side view of the tool of Figure 1 with the magazine in the disengaged position Position is shown;

Figure 3 is a cross-section through a detail of the tool of Figures 1 and 2, which is the normal Illustrates driving a fastener;

4 shows a partially sectioned front view of the tool according to FIGS. 1 and 3 along the line 4-4 in Figure 3;

FIG. 5 shows a representation similar to FIG. 3, which shows the Occurrence of a clamping and the triggering of the movement of the magazine into the disengaged position Position illustrated; and

FIG. 6 shows a detail of the tool according to FIG. 1 to 5 in cross section along the line 6-6 in Fig. 4

Although the innovation can be implemented in a wide variety of forms, it is shown in the drawings only a preferred embodiment is shown, which is explained in more detail below · The hiring is Of course, it is not restricted to the exemplary embodiment described, since this is only for explanation serves the innovation and within the framework of general technical knowledge allows manifold modifications, which nevertheless make use of the basic idea of the innovation.

1 shows a tool 10 for driving in fastening elements, which has a standardized housing 12

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which "has a generally cylindrical upright Area 14 and one that extends in the transverse direction handle-like area 15 comprised the cylindrical Area 14 encloses a device for driving the fasteners through a trigger valve 17 in conjunction with any of the numerous well-known arrangements * in each pail the driving device, to which a driver 18 belongs, energizes this driver 18 below the cylindrical area 14 vertically up and down «The driving device can comprise a piston (not shown) on which the Driver 18 is attached, and is moved back and forth pneumatically, as in US-PS 3,106,136 (A «langas) is described «

Housing 12 further includes a downwardly extending lens 20 which is connected to the lower end of cylindrical portion 14 by bolts 22. The driver and driver 18 is part of a typical fastener driving arrangement of fastening ^{elements 11} therefore comprises numerous embodiments and is therefore not limited to the embodiment shown.

The rabbit piece 20, which becomes a lens assembly 26 for Fastening element includes a rearward-facing vertical surface which has a flat guide channel 27 for forms the fastening elements, Aer is aligned coaxially with the driver 18 and la Tig «3 1» Cross section is shown « The channel 27 is open towards hlmten, and it extends from the cylindrical area H «u to the lower SmAe des laeenstücks 20 vertical do types «This channel is right with regard to its infiltration and cross-section

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type of fasteners that come with the tool should be driven in, as well as the driver 18, so that it can be moved along the channel · The rabbit piece 20 also includes two spaced apart side panels 28, which extend rearwardly and Tertikai upward to the cylindrical region 14 on each side of the channel 27. The side parts 28 are provided with recesses in which components of a pawl arrangement are mounted will be explained in more detail

The tool also includes an elongated magazine 30 for the fastening elements, which are to be described in the normal operating state in a position along and below the handle-like area 15 and close to the rabbit assembly 26 disengageable is held (see Pig. 1) «The magazine is τοη a conventional one Design and can be designed for the use of staples, as shown, the magazine can but also for the use of other fastening elements, such as hail or the like. The magazine maintains the fasteners 31 in an aligned arrangement to sequentially attach them to the front end 33 of the magazine and then to move under the driver 18. The end 33 ends in a flat front 34, which is perpendicular to the longitudinal axis of the magazine and is adjacent to the rabbit assembly 26

In the position described, the magazine is in the position for feeding the fastening elements »with the side parts 28 of the rabbit assembly forming an area of the Close around the front end 33 of the magazine «Simultaneously the front 34 of the magazine is arranged parallel to the guide channel 27 and adjacent to it · The

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The front side 34 therefore closes the open side of the canal 27 »to form a passage channel 36 below which guides the fastening elements, line» its fastening elements 31 The echoes become «Si · Art, like these passage canals 36 formed by the interaction of these components and «is a coaxial arrangement xu de * driver 18 on »eaten from fig · 3 can be seen ·

The passage channel could also be formed in another way, for example load * the front side 34 of the Hagasims a duct with or without a corresponding duct in the opposite side of the base piece 20 includes. fig * · 4> Tends best, like the fasteners Ten the magazine into the leading passage channel 36 exit · The drive-in passage is conventional in that the driver 18 is lowered each time when a fastening element arranged in the passage channel is to drive this into the workpiece

_{During the firing, the magazine 30 is supported 9} against the housing 12 and the lase group 26 so that it is in the position (fig. 1) so that the fastening elements are placed close to the vase assembly 26 under the influence of the great force of the τβη an τβη fastening element is exerted within the thermosetting channel 36, automatically into a disengaged position (fig 2) removed from the lens assembly 26, the magazine 30 is in the vicinity of its rear belt 62 by a limriehtmng on the housing 12, which is generally associated with the traction arm 38 movably fastened, which enables a limited amount of movement of the Hagasine compared to the lens 12 mmd of the lens assembly 26 · The linearity and effectiveness of the knee

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The magazine 30 is furthermore preferably connected between its front end 33 and the rabbit assembly 26 to the housing 12 by a ratchet device 40 which is disengaged when the expansion forces exceed a predetermined QtSQb as a result of a jamming.Sink of the device 38 the magazine can then move away from the rabbit assembly 26 under the influence of the expansion forces to expose the deformed fastener "

They Elinkeneinrichtung 40, details of which are shown in the IFIG ₀ 3 to 6 includes two identical cylindrical latch pin en 42 near the lowermost edge of the front end 33 of the magazine 30 · The latch pin 42 extending at right angles to the longitudinal axis of the magazine of each Side of the magazine 30 transversely to the outside "The pins 42 receive two relatively flat concave recesses 44" which are each arranged in the lower rear edge of one of the side parts 28 "Each of the recesses is passed through the width of the associated side part 28 and is open to the rear." and it has an upwardly facing lower surface area 46 ^for recesses to receive the pegs 42 and enable them to support the front end 23 of the magazine when it is in its feeding position «

They also include side panels 28 of the rabbit assembly relatively narrow seat braids 48 in the lowermost end area of each part 28, which penetrate the recesses 44 Each of these slots 48 extends in its own 28 downwards and to the rear, and it is open downwards and to the rear, as can be seen in particular from KLg · 4

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and Figure 6 shows "Each slot is in general located in the center of each side panel 28 and in each slot is a generally L-shaped main locking member 50 of the ratchet device 40 arranged «The component 50 has an elongated rearwardly projecting Leg 52 and a relatively thick support leg 54 protruding downwards

Each locking component 50 is by means of a pin 56 pivotally supported by the leg 54 and the associated side part 28 protrudes. Each elongated leg 52 extends see τοη its associated side part substantially outwardly along the top of the corresponding recess 44 · the bottom of each Leg 52 is curved so that it has a concave area 58 includes, which coincides with a part of the cylindrical! Surface of the pin 42 and the upwardly facing Surface 46 of recess 44 added

To complete the ratchet device 40, two spring-loaded ones arranged in the two side parts 28 act Pins 60 down onto elongated legs 52 at a point past concave area 58 in order to downwardly loading the locking member 50 · If therefore see the magazine 30 in its position (see Pig 3 and 6) is for feeding the fasteners, the pins 42 are in the concave recesses 44, such as this gate has been described above, where it is supported by the Mnrichtung 38 for vertical support of the magazine · You are pegs 42 in this position due to the downwardly loaded legs 52 of the locking component 50 releasably locked with their concave areas 58, the corresponding cylindrical surfaces of the Cones. 42 «mfassem · In this way, the greater

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the circumference of the pin 42 τοη the recesses 44 and the locking member 50 together and closely detected · The latch device 40 therefore holds the magazine 30 feet against a backward movement the passage channel 36 during normal operations in to keep certain dimensional tolerances

If a jamming occurs during the driving in of a fastening element 31, a large expansion force is generated in the passage channel 36 when the driving force exerted by the driver 18 bends the fastening element (see in particular Pig 5). This force is supported by the Front 34 of the magazine, and it therefore endeavors ₉ to move the magazine backwards together with the pegs moved rearward, overcoming the locking action of the latch device ^ by forcing the legs 52 upward (see fig. 5) into the position shown in Jig and easy to remove

The device 38 is explained in more detail below « The rear end 62 of the magazine 30 is at the housing area 15 suspended by means of a bracket 64 which is attached to the index 62 of the magazine. This bracket extends τοη the Magasin 30 after obem, m & d he is in Bichtung on its torderes inde 33 slightly inclined (see tig 1 and 2) ί “to connect the bracket 64 at its upper end with the rear end 66 of the area 15 is opposite the Ia-.

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senbaugruppe 26 and at a distance τοη this the device 38 is provided, which comprises a joint designed as a control cam

The device 38 comprises a relatively narrow Torsprung 68 on the handle area 15, the Terners extending downward from the end 66 thereof are two arranged at a small distance from one another identical cylindrical king pins 70 and 72 are provided, which both extend horizontally outward from the gate 68 at right angles to the longitudinal axis of the area 15. Both pins are in a horizontal position Line extending in substantially the same direction as the handle area 15 and at right angles to it the duct 27

The last component of the joint 38 is a slot 74, which is provided in the upper end of the bracket 64 and extends substantially in the direction of the axis of the magazine extends «The length of the slot 74 is slightly less than twice the distance between the axes of the guide pins 70 and 72, and its width corresponds to that of the tenons, with the exception of its front end where the Slot is widened or widened upwards to add an additional small fraction of the journal diameter

The joint device 38, which is designed like a control curve, secures the bracket 64 together with the best of the magazine engages the housing area 15 by means of the slot 74 Entern guide pegs 70 «ad 72 · Tuck pegs slide in the slot in order to effect a controlled pivoting

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ken «In the feeding position of the magazine shown in FIG. 1, the bracket $ 4 is arranged opposite the projection 68 so that the pins 70 and 72 are in the rearmost area of the slot 74» In this position, the pins support the hit of the drive assembly in alignment and magazine at right angles to the Durohtrittskanal 36 in the longitudinal direction from ¹ · In the disengaged position shown in Pig · 2, the magazine is arranged at a distance from the drive assembly 26 by being moved downwards and backwards in relation to it its front end 33 are initially moved backwards a short distance, whereupon the enlarged end of the slot 74 comes to coincide with the front guide pin 70 * »Ia. this position, the bracket 64 together with the rest of the magazine to the rear pins 72 are free versehwenkt down until the pin 70 at the uppermost region of the widened end of the slot 74 abuts ¹ ·

The spatial relationship between the pins 70 and 72 and the slot 74, in particular the height of the widened Schiitsendes is chosen so that this pivoting down is limited to a predetermined distance to a To prevent the fastening elements 31 lined up in the magazine from scattering. Therefore, in the disengaged position the top edge of the magazine 30 is held slightly above and close to the lower portion of the lens piece 20, with the upper edge of the end surface 34 strikes this lower area of the hare piece · The curvature of the interacting ! laugh at the guide pins 70 and 72 and the slot 74 enables the magazine to be gently removed from the feed position to move into the equipment and vice versa *

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Arrangement of the pin 42 and the remaining ropes the Ulnkeneinriehtung 40 is careful in the longitudinal direction to that of the cam-controlled joint device 38 tuned to ensure that the guide pins 70 and 72 are located behind the widened area of the sole seat 74 when seeing the locking components 50 and tenons 42 are engaged · piping Spatial assignment also ensures that the front guide pin 70 with the widened area of the slot 74 is aligned when the locking components 50 and the Pins 42 have been separated from each other and the magazine has been moved backwards by the Hasenstüek 20 of the magazine means that the widened area of the slot 74 of the hinge assembly 38 is the front Guide pin 70 approaches, while pins 42 leave recesses 44 and Hasenstüok 20 · Bas entire magazine then swivels down and back into the gear position, as described above this movement naturally opens the passage 36, by separating the end face 34 from the guide channel 27 will not obstruct these parts in the transverse direction The end face 34 and the fastening element deformed as a result of the clamping are therefore located above the guide channel 27 » free so that the operator the fastener can be removed very easily, if this is not already in the Opening of the passageway fell out "

Instead of the cam-operated joints previously described Other devices for supporting the magazine 30 below the housing 15 can also be used, as long as a forward movement of the magazine is possible and its front SnAe is close to the 4-part lens assembly 26

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is held · It could "for example one from one Slot and tenon existing device can be used, which only allows a backward movement of the magazine The preferred cam mechanism 38, however, creates significant parts of the door because of its controlled articulation Pivoting movement and due to the fact that both the end face 34 of the magazine and the! 27 are completely exposed to provide substantially unimpeded access to a deformed fastener su create the downward pivoted position also prevents fasteners from scattering, how this was described

In a similar manner, the design and position of the oink device can be compared to that described above Embodiment can be modified as long as the modified Embodiment the magazine 30 except when the occurrence of Unusually large forces caused by a jam prevent separation from the lens assembly 26 " The preferred ratchet device 40, however, requires a minimum of individual parts, all of which are extremely stable and moreover a great resistance to a The ratchet device 40 also enables proper interaction with the cam-operated one. Joint 38 in order to obtain the above-described downward pivoting of the magazine «

After the deformed fastener is removed, the magazine can be returned to its feed position immediately «The front end 33 * · ■ of the magazine only needs to be lifted against the handle 15, until the pin 42 the legs 52 de «locking 50 touch, causing the carrion's magazine to move forward

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the recesses 44 is moved until the kenkarcn Oberfläehenbereiehe 53 of the legs 52 completely encompass the pegs 42 «At the same time, the guide pegs 70 and 72 dee curling-controlled joint 38 in the rear area of the Slot 74 arranged to support the magazine in «a feed position ·

The locking member 50 and the slots 48 have mutually adjacent opposing surfaces, each with respect to the facing surface of the opposite feil «is slightly inclined when the magazine is in the feed position to the Yerechwenkeneweg de «to control component 50 (see fig · 6) '· These flee include transverse surfaces 76 and 78 above the 8 pivot pin 56 passing through the slots 48 and the legs 52 are formed, so that each leg 52 in a small Extent (fig · 2) can be swiveled at the bottom and held in this position when the magazine 30 is in its disengaged position Position allows each leg 52 to contact and guide pins 42 when they are in locking engagement be moved back to a smooth and β without He return of the magazine in the feed position, d «h · in the normal operating position to ensure

Xs became a novel tool for driving τοη Fastening element s described in which, in the event of a clamping element of a fastening element during driving * of the same, the magazine automatically τοη the lasenbaugrmppe is moved away in a Stellmmg that rersetst downwards or backwards in relation to the laser module

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1st «The tool represents a considerable technical advance compared to the conventional attempts to eliminate the jamming * The described automatic effect of the magazine in connection with the ratchet device and the cam-controlled joint device is peculiar and creates a previously unattainable level of accessibility to those areas of the work «Stuff that tends to become clogged, as well as an unusually high working speed and ease of use« nevertheless, the construction is simple and uncomplicated, requires only a few components and is τοη house made reliable.

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Claims (3)

Patent claims: yTool for driving in fastening elements, consisting of a housing containing a vase assembly and a magazine for successive feeding the fastening elements to be driven in with the factory soug, characterized by a device (38) for securing the magazine (30) relative to the housing (12), the a movement of the magazine between one of the fastening elements (31) feeding position close to the nose assembly (2t) and a disengaged position located at a distance τοη this, and a ratchet device (40) for releasably locking the magazine in relation to the housing in the feed position, which is necessary for the response avf the τοη a fastening element rerformten during the drive exerted »forces designed to release the magazine, causing the magazine to move into the disengaged position moved so that the Ttrfomte fastener can be removed from the tool '. 2. Workzoug nrnih claim 1, dadureh gekennseichnet, that the latch device (40) on the laoen assembly (26) and to a neighboring one. Area of the magazine (30) is arranged and a disengageable Yorriegolungsbauteil (50) which connects the lasombaugruppo with dom magazine. 3. Tool naoh claim 2, characterized thereby, - 19 - 509809/0350 that the device (58) sum back up the magazine (30) • Ine cam arrangement (70, 72, 74) comprises which a backward movement allows the magazine opposite the Haaenbaugruppe (26), and that the disengageable locking component (50) is arranged on the rabbit assembly and engages in the magazine, doing this against the backward movement to lock 4. Tool according to claim 3 »characterized in that the ratchet device (40) further comprises a locking component (42) cooperating with the locking component (30), these components (30 and 42) with the rabbit assembly (26) or ¹ Are connected to the magazine (30), and that the locking component (30) and the locking component (42) have mutually cooperating locking surfaces which mesh with one another in the feed position of the magazine (30) and which the lens assembly (26) and the magazine (30 ) with each other of Terlindens 3. Tool according to claim 4, characterized in that the ratchet device (40) is a locking component (30) has loaded spring to resiliently hold the cooperating squat surfaces in engagement »until the The force exerted by a Terformtea fastening element (31) overcomes the force of this spring 6 »Tool according to claim 5, characterized in that that the locking component (42) is attached to the magazine (30) and that the locking component (30) is attached to the rabbit assembly (26) is pivotably arranged and a tone of the rabbit assembly extending backwards and outwards has elongated leg (32) which can be brought into contact with the locking component (42) ' 509809/0350 · Tool according to claim 6, characterized in that one surface of the leg «(52) of the locking component (50) defines a curved surface area (58) defining one of the cooperating crouching surfaces, the locking member including a cylindrical pin (42) which is calibrated extends transversely to the leg (52) and out of the magazine (30), the cylindrical surface of this pin (4-2) forms the other of the cooperating curl surfaces and conforms to the curved surface (58) of the sole (52) is, and that the leg (52) with the pin (42) is resiliently engageable to the magazine (30) in to lock the feed position 8 «Tool according to claim 1, characterized in that the device (38) for movably securing the magazine (30) comprises a slot (74) arranged on the magazine and extending in the longitudinal direction, the front end of which is widened upwards Housing (12) at least one guide pin (70, 72) is arranged, which extends this transversely outward so that this guide pin (70, 72) engages in the slot (74) and the magazine (30) with the housing (12), but allows movement of the magazine towards and away from the lens assembly (26), the guide pin (70, 72) moving into the widened area of the slot (74) when the latch device (40 ) and the magazine is moved backwards, whereby the magazine can be swiveled downwards away from the lens assembly (26) ¹ · 509809/0350