DE3126536A1 - Device for driving in fastening means - Google Patents

Abstract

Devices having replaceable magazines have been developed for processing staples and pin-like fastening means, such as nails. It has become evident, however, that the different behaviours of fastening means causes difficulties as they are driven in. The fastening means are here pressed beneath the impact cutter of the driving-in device by a slide under spring tension and are individually cut off. An attempt has been made with stopping slopes, for example, to prevent the tipping of the staples out of the driving-in direction during the driving-in process. Pin-like fastening means, for example nails, are cut off in the region of the stopping slopes for the staples. The stopping slopes cause the cutting-off edges for nails and pins to be offset, which means that it is frequently no longer possible to cut off only one item faultlessly, i.e. the front nail. This causes problems. To remedy these disadvantages, separate guide grooves are provided for the staples on the one hand and for pin-like fastenings on the other hand.

Description

1 ^J AΧΚΛTAΛ VVΛ J / Γ · O "

I> IPL.-ING. H. ARENDT Hanover, 03.07.1

UÜBKitXÜSSTK. a TSt ₁ Ki ¹ OW 0 (KiO 71/72

300O HANNOVER 1

Re: M 701 / A / Bs - Applicant: Company

Erwin Müller GmbH & Co. Breslauer Strasse 34-38 4450 Lingen 1

Device for driving in fasteners

The invention relates to a device for driving fastening means with a lower loading magazine, which both with a bracket for holding mounting brackets and pin-shaped Fastening means, for example nails, is formed, which consists of a downwardly open channel, a push plate that closes off the channel at the bottom and has a guide plate arranged at its front end with bevels arranged on both sides of the staple carrier on the sheared edges for the tips the fastening means and one the channel on the

f \ front side closing end plate, which together

forms with the guide plate the lower part of the discharge channel for the fastening means and at the same time serves to guide the fastening elements.

To process staples with one and the same device, it is known to use different, interchangeable magazines use. Furthermore, magazines have already been used in both clips and pin-shaped Fasteners can be stored. It

_ 2 - *) lower loader magazine

however, it has been found that when ejected, staples behave differently than nails / fasteners are pressed by a spring-loaded slide under the push knife of the driving tool and sheared off individually. The fasteners have different lengths and wire thicknesses. At the Individual staples are sheared off from the supply held on the staple carrier, they strive to with their ends to the rear, d. H. towards

{"""■ the rear end of the magazine to tip off

the discharge from the exclusion channel becomes difficult, and troubles often occur. Attempts have been made to take this behavior into account with starting bevels. The tips of the staples, which are tilted backwards, are guided back into the discharge channel through the run-up bevels. While the brackets immediately on
are sheared off the front end of the clip carrier, so the shear edge for this purpose is formed by the clip carrier, nails and pins on the bottom of the thrust plate, that is, in the area of the run-up bevels
sheared off for the brackets. Due to the bevels, the shear edge for nails and pins is

'*' th offset so that it is often no longer possible

is to properly shear only the foremost nail, which leads to malfunctions.

The invention is based on the object of processing both fastening clips and nails or pins To make driving device of the type mentioned so that difficulties in driving of nails or pins despite the presence of bevels for the mounting brackets, avoided

will. The solution according to the invention is characterized by this from that the guide with a guide groove for ejecting the mounting brackets and the guide plate equipped with a guide groove for ejecting the pin-shaped fastening means. the Shear edge at the upper end of the guide groove for the pin-shaped fastening means is with a provided shorter run-up slope than that provided on the opposite side of the bracket carrier Shear edge.

Due to the arrangement of the guide groove for the pin-shaped fasteners in the guide plate, while the guide groove for the fastening clips remains in the faceplate, it is achieved that the nails or pins are offset backwards by the depth of the guide groove in the magazine and thus the

least shear nail following second nail / partially on sits on the base of the thrust plate and can no longer be sheared off. At the same time is enough the depth of the guide groove in the guide plate together with the shortened run-on chamfer from the

Desired function for the correction of the tilting
scissors backwards / brackets to meet. While interchangeable thrust plates with large guide or run-up bevels were used in combination devices for stapling operations and exchangeable thrust plates with only slightly beveled shear edges were used in operation for nails or pins, exchangeable thrust plates can now be dispensed with. The device can be used for both staples and nails without any changes.

*) grooves for the staples and nails or - 4 pins are arranged separately from each other. Advantageously, the face plate

In the drawing, an embodiment of the invention is shown schematically and explained below. Show it:

Figure 1 is a side view of an overall device with the magazine in longitudinal section,

Figure 2 the front part of the push plate with vertically attached Guide plate in a diagram,

FIG. 3 the channel of the magazine in a diagrammatic representation,

Figure 4 is a longitudinal section through the

Magazine in the area of the discharge channel with pin-shaped fastening means ,

FIG. 5 shows a cross section through the magazine, according to Figure 4,

FIG. 6 shows a longitudinal section through the magazine in the area of the discharge channel with fastening clips,

Figure 7 shows a cross section through the magazine, according to Figure 6,

_ C

FIG. 8 shows the front plate in a diagrammatic representation, and

FIG. 9 shows a horizontal longitudinal section through the magazine in the front Area.

The driving device according to FIG. 1 is used for processing staples or pin-shaped fastening means equipped with a storage magazine. This consists of a downwardly open channel 1, which with a push plate 2 can be closed, which at its front end with a guide plate 3 and is equipped with a bracket 4 extending over its entire length. The guide plate 3 is equipped with a guide groove 5 for guiding rod-shaped fasteners during the driving process. At the sheared edges, i.e. H. at the transition from the thrust plate to the guide plate there are run-up bevels 6 and 7 are provided for guiding clips that tilt backwards during the driving process. The staple tips are pushed forward again through the bevels 6 and 7 and into the printed by the guide plate 3 and the end plate 8 (Figure 8) formed discharge channel. With their lateral rails 9, the push plate engages around cheeks 11 of the magazine.

The nails 13 are between the bracket 4, the channel wall 14 and with their upper end in one Groove 15 guided in the upper part of the channel wall and after pushed forward, one copy at a time with the

- yes- -

Shear the straight knife 16 from the row of nails and drive it through the ejection channel 17 into the workpiece. The discharge channel is formed by the guide plate 3 and the end plate 8. The Stirr.piatte 8 has a groove 18 for guiding the foremost of the brackets 19. In the same way, the brackets of the Straight knife 16 sheared off and driven through the discharge channel into the workpiece.

As can be seen particularly well in FIG. 4, when the foremost nail is sheared off, the next following one rests with its lower end at least partially on the through the top of the push plate 2 and the guide plate 3 formed surface, so that a separation between the first and second nail can be done without difficulty and a separation between the second and third nail is avoided will. Separation between the second and third nail would lead to interference. The groove 5 for the The nail 13 is no longer arranged in the face plate 8, but in the guide plate 3. This will be the nails backwards by the thickness of the groove, d. H. offset towards the end of the magazine. The one with it The associated shortening of the run-up bevel 6 with respect to the run-up bevel 7 is compensated for by the groove 5. The arrangement of the guide groove in the guide plate 3 does not affect the shearing process of the clips, since these do not rest on the top of the thrust plate, but are only held by the bracket 4 and be sheared off. Your legs do not reach down to the thrust plate 2. The run-up slope 6 is not equally with the guide groove 5 to the rear

offset, which results in the aforementioned reduction in the slope.

The cutting edge for the nails is marked with 20, for the staples with 21. The gap 22 was designated between the lateral channel wall and the bracket carrier 4 for guiding the nails.

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Claims (3)

PATENT ADVOCATE . H. AREIVT) T Hannover the Ολ 07 · TE) UKPON «β3071 / 7« Hannover, aen uj.u /. 3OOO HANOVER I Re: M 701 / A / Bs - Applicant: Company Erwin Müller GmbH & Co. Breslauer Strasse 34-38 4450 Lingen 1 Claims 1J device for driving fasteners and tacking materials with a lower loader magazine, which is equipped with a clip carrier for receiving both fastening clips and pin-shaped fastening means, for example nails, is formed, wherein the lower loader magazine consists of a downwardly open Channel, a push plate that closes off the channel at the bottom and has a push plate arranged at its front end Guide plate with bevels arranged on both sides of the bracket on the sheared edges for the Tips of the fastening means and a face plate closing the channel on the front side, which together with the guide plate forms the lower part of the discharge channel for the fastening means and ' serves at the same time to guide the fastening elements, characterized in that the guide grooves for the staples and nails or pins are arranged separately from one another. 2. Apparatus according to claim 1, characterized in that the end plate (8) with the guide groove (18) for ejecting the fastening clips (19) and the - 2 - Guide plate (3) is equipped with a guide groove (5) for ejecting the pin-shaped fastening means (13) . 3. Apparatus according to claims 1 and / or 2, characterized in that the shear edge (20) at the upper end of the guide groove (5) for the pin-shaped fastening means has a shorter run-on bevel (6) than that on the other side of the bracket carrier (4 ) located run-up slope (7)