DE1877802U - HOLD-DOWN HOLDER ON STUD AND BAR SHEARS. - Google Patents

Description

My file no. 163 Ob

Paul Ferd company. Peddinghaus, G-evelsberg / Westf. "Hold-down device on billet" or steel bar shears ".

The innovation relates to a hold-down device on billet or steel bar shears with one in the feed direction of the Rod or stick located in front of the scissor jaw, up and down adjustable hold-down bar.

There are hold-down devices on billet or steel bar shears are known, the hold-down bars by one or two hydraulic or pneumatically movable columns can be lowered onto the material to be cut and lifted from it. There are also mechanical downs holder known, in which the hold-down beam via a linkage is connected to a foot or hand lever, upon actuation of which the hold-down bar is lowered onto the material to be cut and is lifted from this again.

The previously known hold-down devices on billet or steel shears cause the hold-down bar to move up and down, i.e. lowering, with every cut and every feed and lifting the bar on or from the material to be cut, and also an exact sequence of the individual activities on the Scissors or the scissors themselves, namely a precise chronological sequence of the feed of the material to be cut through the Scissor jaws with the hold-down bar raised, then a

lowering the hold-down bar on the material to be cut, furthermore the cut and ultimately lifting the hold-down bar again of the material to be cut so that it can be advanced by a further section length.

The innovation offers the possibility of simplification and improvement the previously known hold-down device in such a way that the hold-down bar is automatically placed on the material to be cut takes place and in this case a sufficient pressure of the hold-down device is exerted on the material to be cut to prevent the to avoid the end of the stick or club in front of the scissors mouth. Loosening the hold-down bar from the The product to be cut when moving the product to be cut in the feed direction is also carried out automatically. In other words, is once If the hold-down bar is set to a certain thickness of the material to be cut, then the hold-down bar is lowered on the product to be cut and lift off automatically.

The innovation is of particular advantage for material to be cut that has bulges, upsets, wreaths or the like is. While in such cases, known hold-down designs by increasing the stroke of the hold-down bar, this is the case with the subject matter of Innovation no longer necessary »

The innovation goes from a hold-down device to billet and steel bar shears with one in the feed direction of the bar or The stick in front of the scissor jaws, up and down, adjust-

ble hold-down bars and looks to achieve the above The aim is that the hold-down bar is rounded at its lower corner edge facing away from the scissor mouth and by one above of the beam arranged axis is pivotable. When the material to be cut is being fed, the hold-down bar can move in the direction of Swing out onto the scissors jaw, the rounded corner edge rolling on the material to be cut, while when the Material to be cut the hold-down remains in its working position, the pivot axis of the hold-down bar being vertical or is approximately perpendicular above the contact point or the contact line of the hold-down bar on the material to be cut.

According to a further feature of the innovation, the radius of curvature of the corner edge of the hold-down bar is the same or less than the distance between the rounded secant edge and the pivot axis of the NiederhaJ-terbalens. This is even with small differences in the thickness of the material to be cut, the contact point or the contact line of the hold-down bar on the material to be cut almost vertically below the pivot point of the hold-down bar, so that the hold-down bar still able to hold down the material to be cut when the cut is made.

The hold-down bar is preferably on two holding arms pivotally mounted in the well-known '..' iron by hand the thickness of the food can be adjusted. The steepening of the two arms is only necessary if there is a change in the thickness of the food.

In the drawing, an embodiment of the hold-down device is shown according to the innovation and that shows

Fig. 1 is a side section and

Fig. 2 is a front view of the essential parts of the scissors and of the hold-down device.

The fixed knife 2 is arranged in the scissors frame 1, the one with the movable knife 3 in the scissors slide 4 cooperates. Both knives form the scissor mouth 5.

In the feed direction (arrow P) of the material to be cut Sch, two curved ones are in front of the scissor mouth 5 at the level of the scissor slide 4 Arms 6, 7 are provided, the curvature 6a, 7a being directed towards the side facing away from the scissor mouth 5. The two holding arms 6, Y are adjustable in the direction of the double arrow D, the adjustability according to the Thickness of the product to be sliced. A-n the end of the two curved arms 6, 7 are each a pair by means of the pin 8, 9 short pivot arms 10, 11 are arranged, which carry the hold-down bar 12, which is thus around the axis M of the pins 8, 9 is also pivotable.

The hold-down bar 12 has a substantially rectangular cross-section, but its lower one, the scissor mouth 5, is removed turned corner edge 13 rounded. The rounding is here equal to or less than the distance between the rounded corner edge 13 and the pivot axis M of the hold-down bar. The setting of the arms 6, 7 is preferably carried out in such a way that

that in the operating position, as can be seen from Fig. 1, the point of contact 14 or the line of contact between the Hold-down bar 12 and the material to be cut Sch is located vertically or approximately vertically below the axis of rotation M.

When moving the material to be cut Sch in the direction of the arrow P, the hold-down bar 12 can move up to the position 12 ' swing out. When the feed of the material to be cut Sch has ended, the hold-down bar takes the solid line in i? ig. 1 position and ensures that During the cut by the knives 2, 3, the section of the material to be cut located in front of the scissors mouth 5 is pivoted upwards is prevented.

If the material to be cut has collars, wreaths, flanges or upsets on, so when the Ni ed is advanced, it pivots rbalken 12 so far that the collar or beading can be pushed through between the lower knife 2 and the pivoted-up hold-down bar 12 without that here the position of the arms 6, 7 needs to be changed.

Claims (2)

14 370 * 21 claims for protection; 1.) Hold-down clamps on billet or steel bar shears with an in Direction of advance of the stick or club in front of the jaw of the scissors located, up and down adjustable hold-down bars, characterized in that the hold-down bar (12) at its lower one, facing away from the scissor mouth (5) The corner edge is rounded and can be pivoted about an axis (M) arranged above the beam. 2.) feather holder according to claim 1, characterized in that the radius of curvature of the corner edge (Vj) of the Mederhalterbalkens (12) is equal to or less than the distance between the rounded corner edge (13) and the pivot axis (M) of the downholder beam (12).