DE1807728A1 - Nail machine - Google Patents

Description

Professor Dr.-Ing. ROB5RT MELDAU 483 GOTERSLOH / W., Den

_, .. Carl-Bartelimann-Str. 4th

D i ρ I.-1 η g. _Te l _Efon, 0S241I-23454

GUSTAV MELDAU

Patent attorneys _{on nn} « _Q

B 1297 Prof. M / f-mg IÖU // ZO

SWINGrLIME INC.

32-00 Skillman Avenue
Long Island City, NY ₀

U ^ S.A.

Nail machine

The priority of the application in the USA of 4o12 _e 1967 under number 695 538 is claimed.

The invention relates to a driving machine for fastening elements and is used in particular on a liquid or gas powered nailing machine to round-headed Driving nails into workpieces.

So far, nails have either been hammered in by hand or have fed by a strip that had been inserted into the magazine of a fastener wrapping machine » So far, however, it has not been possible to use commercially available round heads Nails with such a machine for driving fasteners to be taken, because neither a suitable magazine type a suitable feeder was still available.

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Bank details! Deutsche Bäfllc A.-G., Götersloh / Westf. Account 334/5251 / Postscheckkonto Dortmund No. 21717

ORIGINAL

The new invention overcomes this disadvantage. It creates a feeder mechanism and a magazine type that is used for hammering round-headed nails are suitable in workpieces. According to the invention, the round-headed nails are inserted into the machine in the form of a strip of such nails which are laterally aligned with one another.

Round-headed nails in strips packed in a driving machine can be used for fastening elements, has already been suggested by me in an earlier application, this pack as such is not claimed in this invention.

The invention will be explained in more detail with reference to the drawing. Eafeelgt:

Figure 1 'is a diagrammatic side view of a wrapping machine for fastening elements according to this invention,

FIG. 2 shows the front view of a broken off part of the support part of the magazine. Its door is shown in the closed state,

'Figure 3 is a view similar to Figure 2, but with the door is shown open,

Figure 4 is a cross-sectional view of the nailing machine according to the invention. In this picture, the piston for the striker has been moved into the actuation position. This

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Striker or firing pin is shown in the position which he ingests when he puts a round headed nail in one Impacts workpiece,

FIG. 5 shows a cross section through the valve part which is used to actuate the piston by means of compressed air in order to detach the firing pin to control the machine,

Figure 6 is a disassembled view of the claw assembly of the feeder part according to the invention to a retrograde Movement of the strip of fasteners as the claw is moved to the retracted position of the To avoid supporting element and a round-headed nail, which latter is shown in the position it occupies, to be operated by both tool parts,

Figure 7 is a view similar to Figure 4, but in which the piston, the control valve and the associated components are shown in the rest position of the device,

FIG. 8 shows a partial cross-section through the piston and the one attached to it Firing pin of the machine along lines 8-8 in Figure 7,

FIG. 9 shows a partial cross section through the release valve of the machine along lines * 9-9 in Figure 7,

Figure 10 is a diagram of the spring ring for attaching the firing pin on the piston of the machine,

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FIG. 11 shows a partial cross section of the feeder claw, the actuating piston and the associated component. In this illustration the Zubrij., ;; steal the foremost nail of the nail strip in a position adjacent to the firing pin of the machine after this Invention brought

FIG. 12 is a view similar to FIG. 11, but showing the claw in the intermediate position it assumes when there is no longer any air pressure acting on the piston and the return spring begins to move the claw into its normal, fixed position to press

FIG. 13 is a partial side view of a component which is similar to that shown in FIG. 2, but partly in the Section is drawn to show the location of the parts at the time the foremost nail passed through the pawl has been brought into the position adjacent to the firing pin and before the firing pin (striker) hammer this nail into a workpiece,

FIG. 14 shows a diagram of individual parts of the component forming the receptacle Part of the magazine showing the location of the strip of round headed nails within this container,

FIG. 15 cross-section through the receptacle of the magazine showing the position of the strip of round-headed nails, how it is arranged within the same around the carrier,

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BATH ORIGINAL

180772a

FIG. 16 shows a partial plan view of the lid of the receptacle and the associated component for attaching the lid to the body of the container,

Figure 17 detail view of the claw, the to prevent a retrograde Movement of the strip of fasteners used carrier part and the associated component. The component shown is similar to that shown in FIG. 6, but has a different structure and represents an optional version for the carrier shown in Figure 6,

Figure 18 is a partial side view of the magazine of the new one Nail machine,

Figure 19 is a cross section of the feeder pawl, piston and associated Component. In this illustration the piston is in its fully retracted position, the he takes when no more compressed air acts on him and the feeder claw through the spring element in the completely withdrawn position has been forced

Figure 20 is a diagram of the carrier part, which serves to provide a retrograde Prevent movement of the strip of fasteners of the type shown in Figure 17,

Figure 21 is a cross-section of the magazine of the nailing machine, which the Location of the strip of round-headed nails shows when this strip is in the position adjacent to the firing pin is guided into a workpiece.

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. - 6 The invention will be described in more detail with reference to the drawing.

This special form is only used for clarification and as an example. Because it can be obvious within the scope of this invention make various changes.

The nailing machine 10 has a housing 11. A piston 12, which is connected to a firing pin 13, moves inside the housing 11 is. A bolt 14 connects the piston 12 and the firing pin 13. The locking ring 15 has a central opening 16 an adjacent cut-out part 17. This locking ring 15 also shows an upstanding wall 18. A Helical spring 19 - preferably with a cross section consisting of strands - is arranged around the firing pin I3 and is held on the locking ring 15.

A control valve 20 is designed with an actuating part 23 having a surface 21 and a lower surface 22. The surface 21 has a larger effective surface than the lower surface 22. A spring 2k is ring-switched.

The actuating part 23 is inside by means of an O-ring 26 a channel 25 sealed and arranged within the housing 11.

The valve 20 has a shaft 27 which is movable within the channel 28 and is sealed by a ring 29. A through

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let 30 within the housing 11 is connected to a compressed air passage 31, which in turn via the connecting piece 32 to a Compressed air source is connected. A passage 33 is connected to a further passage 34, which in turn is connected to the passage 31 is in connection, but only via the release valve 35.

The valve 35 has a stem 36, the part of which is within the channel 37 is movable and its protruding part 38 is connected to the trigger 39. In operation, a spring 40 holds the shaft 36-38 in its lower position.

The trigger 39 is pivotally connected by a pin to the housing ¹ Jl. 11

Optionally, a safety 42 is arranged which engages with the trigger 39 to prevent the tool from being triggered, as long as it does not touch a workpiece.

The passage 33 is also connected to a slide 43, in which a piston 44 is slidable. This piston 44 is on Link 45, which has a V-shaped opening, and an O-ring 47 as a seal. A claw 48 carries a rearwardly extending rod 49. Furthermore, this claw 48 is provided with two lateral, spaced arms 50 and 51 and a recess 52 between the latter. The arm 51 carries a prong 53, the foremost fastening part 54 of a Stripe fastening members 55 and part 54 in the

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Can bring range of action of the firing pin. Arm 51 carries a prong 56 which can rest on the fastening element 57 directly behind the foremost fastening part 54.

A spring 59 is movable within a second slide 58, which is also arranged within the recess 52. A declining one Movement of the fastener strip during retraction of the pawl 48 is prevented by a support member 60. This carries a holder 61 outwards and a stop 62 offset to the side. The component shown in FIG two such spaced apart elements, in the optional other embodiment only a single set of Elements 61-62 are available. The corresponding parts in this optional embodiment are denoted by 6la and 62a. With a Screw opening 63 can support part 6O (60a) .am the corresponding Fasten part of the magazine.

A magazine 66 is attached to the housing 11 by means of screws 64 and nuts 65. It comprises a receptacle 67 and a support 68. The receptacle 67 has a body 69. This carries a lateral extension 72 which is fastened to the housing 11 with the pin 73. The body 69 also has a lateral opening 74. A locking recess 75 is made on this outer side.

A shaft 70 is held in place by a pin 76, extends into the body 69 and carries a locking washer 77. A ZusStzschaft 78 bears a lo ^ sve ^ ief ο ing in which the - 9 -

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SAD ORIGfNAL

'Shank 70 is housed. This shaft 70 has several transverse depressions 80, each of which can come into engagement with a corresponding transverse recess within the additional shaft 78. A screw 81 connects the shafts 78 and 70 to one another.

Additional shaft 78 also includes a plurality of cut-out portions 82, the purpose of which is explained below.

The cover 71 is connected to a shaft part 83, this has a longitudinal recess 84 for receiving the additional shaft 78. Furthermore the lid has a wall 85 with an opening 86, which with the Opening 74 can be aligned.

On the outer surface of the cover 71 sits a sensor 87, the attached to it with pins 88.

Inside this receptacle 87 is a rod 89 with a handle 90 attached, which can optionally be arranged within the locking recess.

At the other end of the rod 89, a laterally offset part 91 is arranged, which is optionally in the cutout 82 or in the latter can be brought into operation.

The carrier 68 of the magazine 66 is provided with a door 92. The door 92 is mounted in the hinge pin 93, which runs through a matching longitudinal recess 94 within the door 92. On off-

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Section 95 contains the spring 96 which, in use, urges the door 92 to the open position.

The door 92 is also provided with a holder 97 which locks it in the closed position.

An additional holder 98 and a U-shaped bracket 99 hold the Parts 98 and 97 together and the door is closed State solid. An impact depression adjoins the firing pin 13 100.

The machine according to the invention is designed to work with the strip of fasteners 55 in the manner shown in FIG represented form works. Several retaining strips 101 are arranged at a distance from one another and connected by the fastenings, from which the strip 55 is composed. The strip shown in the example as such is not essential for using this invention.

The invention works as follows:

A strip of fasteners 55 is placed in the receptacle 67 of the magazine 66 after the cover 71 of the same has been removed. The strip is placed around the matching carriers which are arranged in the center of the receptacle of the magazine as shown in FIG. The bracket 99 is removed, leaving the door 92 in the

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Carrier of the magazine is forced into the open position. The foremost attachment point of the strip is then brought into a position adjacent to the prong 53 of the claw H8 and the fastener immediately behind it is brought into a position adjacent the prong 56 of the claw 48.

Then the door 92 is closed and by the bracket 99 in this Secure location.

Then the cover 71 is fastened around the container of the magazine, by placing the laterally offset portion 91 within one of the openings 82 and the handle 90 in position within the Recess 75 secures. The opening 82 selected in each case depends on the length of the nail that is to be used with the device wishes to use.

The connection piece 32 is now connected to a source of compressed air, and the machine is brought up to the workpiece.

In the rest position of the machine, compressed air fills the passage 30 and presses against the lower surface 22 of the control valve 20. Die Compressed air also fills the passage 33 and thereby also presses on the surface 21 of the control valve 20. Since the effective surface the lower surface 22 is smaller than the effective surface of the upper surface 21, the compressed air holds the part 23 of the valve in the lower position and prevents the compressed air from getting the

To move the impact piston 12. _ i? -

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At the same time, the compressed air also acts on the piston 44 and pushes it forward. As a result, the claw 48 is pushed forward and the foremost fastener 54 into the recess 100 adjacent pressed against the firing pin 13. Will now be the trigger 39 pulled, it connects the passage 34 with the outside air and thereby lets the compressed air out of the passage 33. Now no compressed air acts on the upper surface 21 of the control valve 20 more one. However, the compressed air presses in the passage 30 against the lower surface 22 of the control valve 20 and moves the actuating part 23 of this valve upwards. This allows compressed air to reach the impact piston 12 and drive this piston downwards. Of the Firing pin 13 moves downward and spring 19 is compressed. Now the foremost fastening element 54 of the strip 55 has been driven into the workpiece.

Since the compressed air has been released from the passage 33, the spring 59 moves the claw 48 backwards at the same time. because it is pivotally mounted, the prongs 56 and 53 slide over the fastenings of the strip 55. To allow rearward movement of the strip of fasteners during this movement prevent, either the carrier 60 or the carrier part 60a is arranged. As the pawl 48 moves back, the Fasteners retained on the stops62 or 62a.

If you let go of the trigger, the compressed air fills the passage 33 again. As a result, part 23 of the control valve 20 is

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cause it to return to its rest position. Arrived at the same time Compressed air to the piston 44, pushes it forward and causes the prongs 53 and 56 advance the respective fasteners that they abut. The one immediately behind the fastening part forced forward by the prongs 53 and 56, respectively The following fasteners can move forward Move over the holding part 60 or 60a until they reach the stops 62 or 62a. At this point are the stops 62 or 62a on the respective fastening part and prevent the reverse movement, as described above.

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Claims (1)

Professor Dr.-Ing. ROBERT MELDAU 483 GüTERSlOH / W., Den π j η I - I η α Gorl-Btrfelsmann-Str. 4th GUSTAV 'MELDAU - ^ -www «« Patent attorneys B 1297 U / mg Claims β] _ Wagging machine, preferably operated by compressed air, with a longitudinally displaceable firing pin for driving nails, hammer screws or similar fastening elements into a workpiece, characterized by a magazine (66) for receiving a large number of nails (55) which are on strips (Ιοί) one after the other, aligned in the same direction, a feeder (48) which is arranged to be movable to and fro within the magazine (66) and for engagement between the strips (1oi) to advance the foremost nail (54) in front of the firing pin, which is retracted in the rest position (13) is formed, and a pressure drive for the feeder (48). 2.) nailing machine according to claim 1, characterized in that the feeder (48) is a on the piston (44) of the ^: pressure drive reciprocating claw. 3e) nailing machine according to claims 1 and 2, "characterized by a lock (6o, 6oa) for the nails (55) against a backward movement of these during the backward movement the claw (48) " 909827/0225 Bank details ι Deutsche Bank A; -G., GDtersloh / Westf. Account 334/6251 / Postscheckkonto Dortmund No. 21717 ΟΔΠ ORIPINlAl 4 x) nailing machine according to claim 1, characterized in that the striking pin (13) and the feeder (48) are controlled to _f that during reverse "of the feeder (48), movement of the firing pin (13) is actuated and during the forward movement of the feeder (48) the firing pin (13) is withdrawn. 5 ·) Nailing machine according to claim 2, characterized in that the claw (48) is pivotably attached to the piston (44) is. 6 ·) Nailing machine according to the preceding claims, characterized characterized in that the firing pin (13) and the piston (44) are pushed back by springs (19) and (59), respectively and compressed air is alternately directed onto the firing pin (13) and onto the piston (44). 7 ·) nailing machine according to claim 1, characterized in that the magazine (66) has a storage container (67) and comprises a feeder (68). 8 ») nailing machine according to claim 7, characterized by a cylindrical shape of the storage container (67) and a cover (71) which extends over it »by means of a bolt (89) is detachably attached to the storage container (67). 909827/0225 9 ·) nailing machine according to claims 7 and. 8, characterized by a lateral opening (74) in the cylindrical Hollow body (69) of the storage container (67) »an upright support for the nails within the Hollow body (69) and a lateral opening (86) of the cover (71) which is aligned with the opening (74) and in the guide (68) opens 1o ·) nailing machine according to claims 8 and 9 »characterized through recesses (82) in the container (67) for the engagement of the bolt (89) at a selectable height and a recess (75) in the cover (71), in which the bolt (89) is locked with its handle (90) 11.) Nailing machine according to claim 7, characterized in that that a pivotable door (92) is arranged on the end face of the guide (68) and held open by a spring (96) is" 12 ·) Nailing machine according to one or more of the preceding claims, characterized by a front »prong (53) for engaging the foremost nail (54) and a rear prong (56) for engaging the next following nail the arm (51) of the claw (48) adjacent to the strip (1o1), 13 ·) Nailing machine according to the preceding claims, characterized through a recess (52) between the arms (50) and (51) of the claw (48) into which the spring (56) 909827/0225 " ⁴ " e ingre ift · 14o) nailing machine according to the preceding claims, characterized by a rearwardly projecting nose (49) of the claw (48) over which the claw (48) is in a recess (46) is pivotably supported with a V-shaped cross section on the piston (44). 15o) nailing machine according to one or more of the preceding Claims, characterized by rearwardly sloping projections (61, 61a) of the lock (60,6Oa) with a front stop (62,62a) for the nails (55) 16 ») Nailing machine according to one or more of the preceding Claims, characterized by a piston (12) within its housing (11), which is connected to the transverse end of the firing pin (13) is connected and on which the return spring (19) engages. 17 «) nailing machine according to claim 16, characterized by a valve (20), which is arranged above the cylinder for the piston (12) and is pressurized through channels (50, 31,33 »34) is controlled in such a way that when actuated of the release valve (35) compressed air is directed to the piston (12), while the pressure on the piston (44) as a result the connection of the channels (33) and (34) with the outside air under atmospheric pressure is reduced is. 909827/0225 18 ·) Nailing machine according to claim 17, characterized in that the effective surface (21) of the Eentils (20) is larger than the effective lower surface (22) of this valve. 19 ·) Nailing machine according to claims 17 and 18, characterized characterized in that when the release valve (35) is not actuated as a result of the channels (33) and (34) let into the channels Compressed air through the excess pressure on the surface (21) the valve (20) on the edge of the cylinder for the piston (12) and the piston (44 ·) is pressurized. 909827/0225 Blank page