DE13303C - Method and machine for making cut nails - Google Patents

Description

PATENT OFFICE.

The present process aims at the production of nails from sheet metal, strip iron or angular iron wire in a cold way without loss of material through cutting of the raw material in a direction inclined to the length of the wire, as shown in the enclosed Drawing is illustrated.

For this purpose, the wire is cut into pieces, the length of which is equal to the length of the Blade, increased by twice the length of wire necessary to form a head.

If the nails are to run uniformly from head to tip, a cut will be necessary as indicated in FIG. The ends of the wire marked with α are intended for the formation of the heads, so two nails are created from such a wire. Instead of letting the nails run sharply along the entire length of the blade, this can also be done, as shown in FIG. 2, up to any length.

After the wire in the designated manner. cut, the pressing takes place Heads.

The tips of the nails can be set in the middle by pressing, as shown in FIGS. 3 and 4 illustrate.

The accompanying drawings also illustrate a machine that does the Cracks the wire ends and completes the heads.

5 shows a side view, FIG. 6 a top view, FIG. 7 a horizontal section according to AB in FIG. 5, FIG. 8 a section according to CD in FIG. 6, and FIG. 9 a section according to EF in the same figure of this machine . The remaining figures are details.

The wire first passes the straightening apparatus A ¹ , FIG. 5, of known construction, and is advanced against the cutting and splitting device by the movable pliers B ¹ .

The cut wire end * prepared for splitting is gripped and held during the splitting at α α, Fig. 1, by two horizontally movable gripping tongs C ¹ and D ¹ , Figs. 9 and 11, and after the splitting both parts of the wire end are held moved by the pliers C ¹ and D ¹ to the point where the head is pressed on the nails.

The wire ends are cut using the vertically movable slide JS ^1,. 5 and 10. A steel plate b, Fig. 10, is screwed to this slide, with an opening that corresponds exactly to the cross-section of the wire. Once the wire has been advanced through the pliers B ^x , the slide JS ^{1 is} lowered, and the cutting is effected by the plate b moving the wire past the steel plate d belonging to the pliers C.

At the same time, the slide E ¹ prefst the upper movable jaw e of the pliers C ¹ down, which now in common with the plate d holds the cut wire end (at a, Fig. 1) while the wire end is split. At the same time, at a ¹ , FIG. 10, the other end of the cut wire is grasped and held by the pliers JD ¹ , FIG. 11. Splitting the

The wire is carried out by four knives z ' ¹ z ² z' ³ z '* which, as can be seen particularly in FIGS. 7 and 8, can be moved vertically with the slide JS ¹ in a box cast on the frame. By means of the pliers C ¹ and D ¹ , the end of the wire is brought between the knives z ' ¹ z ² z ³ z ⁴ and held in place so that the cut is made in the manner shown in FIG. The motion of the four blades is effected by the four levers / ^{1 No 2/8/4,} the top of which the two f ^1/3 are by corresponding, seated on the shaft eccentric F, Fig. 5 and 6 moved. The lower lever f ^l is attached to f ^l by means of a pull rod g , but the lower lever / ² is suspended from a suspension screw fastened in the frame of the machine.

Before the start of splitting, the surfaces of the knives z ' ² and z' ⁴ , as well as the surfaces of the knives z ¹ and z ^3, lie in one plane. Springs or weights give the knives z ² and z ^{4 a} constant tendency to lift, but this is prevented by the hanging screws gg ² .

At the beginning of the splitting, the upper knives z ' ¹ z' ^{3 are} first lowered until z ' ¹ rests firmly on the right half of the wire, FIG. 8, and together with z ² holds this half of the wire in place. P and z ' ⁴ have now also lowered and grasp the left half of the wire. While the knives z ' ¹ z' ² now stand still, the knives z ' ³ z' ⁴ are lowered even more, the lever / ^{4 being} carried along by the lever / ³ by pulling rod g and the splitting of the wire end is effected. The length of the pull rod is regulated in such a way that, when moving, the two knives z ³ z ⁴ always protrude from each other by exactly the thickness of the wire. The pull rod g goes through the frame and the nut g ¹ limits the stroke of the lever / ⁴ and knife z ⁴ .

In a similar way, the stroke of the lever f ² and knife z ² is limited by a hanging screw g ^{2 fastened in the frame.} The connection of the levers f with their corresponding slides takes place in the manner shown in FIGS. The movement of the slide F ¹ is brought about by the lever h and a corresponding eccentric seated on the shaft F , as FIG. 6 clearly shows.

When the splitting is complete, the knives return to their initial position and each half of the wire is moved laterally by the pliers C and D into position I and II, FIG. 8, horizontally. The clamps are, in turn, obtained for this purpose from the verticale rotatable about axes levers / ¹ Z ^2, Fig. 6, moved laterally back their movement through seated on the shaft eccentric F.

During this transport of the wire halves, of course, the tongs must be kept closed until the nails have reached positions I and II; this is done in the case of the pliers C ¹ by the slide F ¹ , in the case of the pliers D ¹ by a suitably attached spring, etc., which are omitted in the drawing for the sake of clarity.

Furthermore, since the end of the wire gripped by the pliers D ¹ , as explained above, is ^{lowered by the slide knife z '3} z ⁴ , the lower part d ^{1 of} the pliers D ¹ , FIG. 11, must also be able to lower; a suitable spring then drives it up again after splitting. The heads are upset in a known manner by means of the slide m ¹ n ¹ m ² n ² and the hammer or king o ¹ o ² . The two upper slider m ¹ m ^2, Fig. 6, by set screws p ^x p ² found the two lower slider n ^x n ² are movable and are moved by the lever q ^x q ² from the shaft F ^by matching eccentric .

The slides m ^x n ^x m ² n ² contain the shapes for the head to be formed and at the same time serve as anvil for the hammers o ^x o ² . The latter are located in horizontally movable slides r, which are moved by the eccentrics s provided with a friction roller on the shafts F and F ¹ . However, these eccentrics do not act directly on the slide s, but through the intermediary of a wedge t which can swing around its lower fulcrum; by means of the lever t ¹ and screws i ² one can adjust the wedge t and the displacement of the slide r. As can be seen from FIG. 5, the slides ί are provided with friction rollers on which the wedges t act. The slides r are moved back by the springs u with the hammers o ^x o ² .

When the head is finished, the now completed nail is removed from the machine by the ejectors ν ¹ ν ² , FIG. 6. The ejector ν ¹ is moved by lever w ^x , slide w ² by an eccentric w ^% , the ejector ν ² by lever w ⁴ ; the latter sits on a horizontal shaft on which a ^{lever connected to the rod w 5 is} attached, which lever is moved by eccentric ze / ⁶ with a nose, FIG.

Finally, it should be noted that the tongs B ¹ , which are set up as drag tongs, are moved by the rod χ from the slide r of the king o ^x .

Shafts F and F ¹ are driven by gears y ζ from shaft G. Perhaps it should be suitable for mass production to split the wire on one machine, as described, and hit the heads on the second.

Claims (1)

P ATENT-An Proverbs:
The process of making nails, which are formed from diagonally cut wire ends, first cut off the wire ends at right angles in a machine, hold them firmly at both ends with two pliers, cut through or split the intermediate piece of wire diagonally and then use the cut halves The pliers are to be guided sideways in opposite directions in front of a nail iron each for upsetting the head. The arrangement shown in the drawings of the machine used for this purpose, including the four knives z ¹ z ' ² z ³ z' ⁴ and the tongs C ¹ and -Z) ¹ . For this purpose 2 sheets of drawings.