DE1204599B - Rod guide for devices for driving staples or the like. - Google Patents

Description

GERMAN

PATENT OFFICE

EDITORIAL

German class: 87 a-18

Number:
File number:
Registration date:
Display day:

1204599
B60944Ic / 87a
January 13, 1961
November 4, 1965

The invention relates to a ram guide for driving staples or the like. in which the plunger is moved by a piston in a cylinder under the action of compressed air and the staples or the like are fed to the ram guide channel in the transverse direction from a magazine housing on a preferably screwable base piece that can be inserted into the cylinder is attached.

The aim of the invention is to design the guide of the driving ram in such devices so that this part of the device, which is subject to increased wear, can be replaced in a simple manner and is replaceable and that faults that cannot always be avoided when handling the device are and z. B. can occur by clamping a clamp in the guide, easily and quickly and can be fixed without special tools.

In a known device, the magazine housing from which the Hp.ftV1a mTn e.rn or the like are fed to the ram guide channel in the transverse direction is attached to a base piece that can be inserted into the working cylinder; Another device is already known in which the part of the ram guide that can be placed on the workpiece is formed by a rear wall together with a front part of the guide. However, even the combination of these two construction details would not be sufficient to achieve the purpose pursued by the invention. Rather, the invention is based on the knowledge that a training fulfilling this purpose must extend to the entire area of the device from the lower end of the working cylinder to the lower end of the plunger guide, and accordingly the invention essentially consists in the fact that in a plunger guide the initially designated type on a pair of lateral lugs of the bottom piece of the cylinder, a yoke-shaped rear part of the ram guide channel encompassing the magazine housing and a front part forming its end wall are detachably attached, while a rear wall continuing the yoke-shaped part together with the front part in a manner known per se on the workpiece forms attachable part of the plunger guide.

The inventive design of the plunger guide makes it possible to remove the front part forming the end wall of the guide channel and its yoke-shaped rear part only after loosening a few, preferably only two, fastening screws from the base piece and thus in a simple manner the plunger guide channel plunger guide for devices for driving in
Staples or the like.

Applicant:

Joh. Friedrich Behrens, Ahrensburg (Holst.)

Named as inventor:

Heinz Bade, Hamburg-Garstedt

to make it accessible or to replace its parts.

In an advantageous development of the plunger guide according to the invention, a pot-like part provided with a guide slot for the plunger is shown in FIG its circumferential position by a projection between the bottom piece and the yoke-shaped upper rear Part of the slide guide fixed positively. Also this upper part of the ram guide is after loosening the above-mentioned fastening screws for the lower guide parts and after the expansion of the latter accessible and also easily removable.

Further design features of the subject matter of the invention emerge from the subclaims.

The inventive design of the plunger guide also simplifies the assembly of the device in its manufacture.

The invention is explained in more detail below using an exemplary embodiment based on the Drawing on an enlarged scale in

Fig. 1 in the middle vertical longitudinal section through the lower part of the cylinder and the ram guide a driving tool operated with compressed air, in

Fig. 2 in cross section along line Π-ΙΙ of Fig. 1, in

Fig. 3 in section along line III-IH in Fig. 1 and in

A b b. 4 is shown with exploded parts of Fig. 1, while

A b b. 5 the vertical section along line V-V of A b b. 1 reproduces;

Figs. 6 and 7 each illustrate a further Possibility of executing the subject of the registration in a partial side view or in the associated middle vertical longitudinal section.

509 720/59

In the lower end of one in Ab b. 1, 3 and 4 shown cylinder 1, in which a not shown Piston moves down a leaf-shaped plunger 2 under the action of compressed air, is a bottom piece 3 screwed in; it carries on its part 4 and in a pair of lateral lugs 4 a the fixed Housing 5 is at right angles to the driving direction extending magazine for the -inzufreibenden U-shaped staples 8 with open at the bottom channel-shaped Cross-section, (see A b b. 2). The lower end of the magazine is a longitudinally movable one Bottom 6 with a rail 7 on which the clips 8 are held by a slide 9 under a spring drive (not shown) be advanced. At the front end of the bottom 6, which is not shown by a Snap lock is held in its operative position is a downward protrusion 10 attached, which forms the rear wall of the ram guide channel. The front part of this Guide consists of an end wall 11; it has a recess 12 on the inside, which together with the end face of the rear wall 10 has a Forms a slot in which the plunger 2 is guided during its drive-in and return stroke. The recess 12 is after the magazine for the insertion of a clip 8 in the path of the Plunger 2 open. The upper part of the ram guide includes a U-shaped yoke 13 on the magazine housing 5 sits and includes the side walls with its legs 14 (see also Figs. 3 and 5). the Legs 14 engage with strips 15 in a form-fitting manner in a recess in the end wall 11 (see in particular Fig. 3). The end wall 11 and the yoke 13 are at the same height and with their upper end faces form the insertion opening with inclined surfaces 16 for the plunger 2. The end wall 11 and the yoke 13 are releasably attached to the device, to be precise on each Side of the magazine housing S by means of a cap screw 17, which "extends through a hole in each of the parts 11 and 13 and in each case a nut thread of the "both sides enclose the magazine housing S Leg 4 a of the cylinder base 3 engages.

The ZyHnderboden supports the constant guidance of the plunger 2 during its downward and upward movement 3 a downwardly open pot-like insert 18, which is provided with a slot 19 in its end wall is provided for the plunger (see especially Fig. 1). With a circular arc-shaped projection 20 of his At the lower edge, the insert 18 engages between the extension 4 and the yoke 13 and rests on these parts form-fitting and secured against rotation. Thus parts 4 and 13 place the insert 18 in radial direction and in the correct position of its slot 19; in attachment on the bottom piece 3 the insert 18 via its flange 21 by the tension of the return spring 22 for the driving piston held and thereby also set in the axial direction.

Due to their releasable mounting by means of the screws 17, the parts 11 and 13 of the ram guide channel are easily removable, so that any loading jams fixed in a simple manner and without any other tool than a screwdriver can be, if this is not already done in an even simpler manner by pulling back the magazine base 6 and thus the guide part 10 is possible. It is just as easy to replace part 13 and 18 in case of their wear. The manufacture of the device is favorable in that the guide surfaces the part and 13 and the insert can be hardened individually.

Fig. 6 shows a side view of another possibility for expanding the tappet guide. Here is the The end wall 11 can be pivoted by means of eyes 23, 24 and bolts 25 on the underside of the cylinder base 3 stored and by the tension of a curved leaf spring 26 on the cylinder 1 and his Bottom 3 is fastened with screws 27, held in the operating position, whereby the yoke 13 is in contact is held on the two approaches 4 a of the cylinder base 3.

Devices without a return spring can be used as shown in Fig. 7 by clamping its flange 29 between the wall of the cylinder 1 and its bottom piece 3 in the axial Direction to be determined.

Claims (6)

Patent claims: 1. Plunger guidance for driving staples or the like. Devices in which the plunger is moved by a piston in a cylinder under the action of compressed air and the staples od The cylinder insertable, preferably screwable bottom piece is attached, characterized in that a pair of lateral lugs (4 ä) of the bottom piece (3, 4) has a yoke-shaped rear part (13, 14) of the ram guide channel surrounding the magazine housing and a front part forming its end wall (11) are detachably attached, while a rear wall (10) continuing the yoke-shaped part (13, 14) together with the front part (11) forms the part of the ram guide that can be placed on the workpiece in a known manner. . 2. plunger guide according to claim 1, characterized in that the magazine housing (5) comprehensive lateral approaches (4 a) of the bottom piece (3, 4) screws (17) for fastening the yoke-shaped rear part (13, 14) and the front part (11) of the ram guide. 3. ram guide according to claim 1 or 2, da- = characterized in that the rear wall (10) the ram guide on the sliding base (6) of the magazine (5) for the staples Od. Like. Is attached. 4. tappet guide according to one of claims 1 to 3, characterized in that one with a Guide slot (19) for the plunger provided pot-like part (18) in its peripheral position a projection (20) between the base piece (3, 4) and the upper rear tappet guide part (13, 14) is fixed positively. 5. ram guide according to one of claims 1 to 4, characterized in that the front part (11) and the yoke-shaped rear part (13, 14) of the plunger guide z. B. with protruding strips (15) interlock positively and the slot leading the plunger through an only in the front part (U) provided recess (12) is formed. 6. plunger guide according to one of claims 1 to 5, characterized in that the front wall (11) is pivotably mounted on the base piece (3, 4) and in a manner known per se a pressure spring (26) is held in the operating position. Documents considered: French Patent No. 1,218,036; British Patent No. 847,388;
U.S. Patent Nos. 2,337,479, 2,733,440, 2,819,466, 2,888,679, 2,909,780, 2,914,033, 954,561. For this purpose 2 sheets of drawings 509 720/59 10.65 © Bundesdruckerei Berlin