SU45587A1 - Automated nail cutting machine - Google Patents

Description

The machine consists, like other already known similar machines, from feed rollers with ratchet drive, fixed and movable knives for cutting blanks, transfer bodies for transferring blanks from knives to the clamping plates and hammers for riveting heads.

However, there are significant features in these mechanisms. The frame with feed rollers is rotated to produce pointed nails. There is a flat spring on the movable knife for holding the cut piece as it moves to the transfer member. The latter is in the form of a grip, swivel and movable in the axial direction; at the front end, the gripper is provided with a spring clip for blanks.

In FIG. 1-3 depict the machine in three projections; FIG. 4-top view of the bed; FIG. 5 - detail of the drive mechanism; FIG. b-8-feeder in three projects; FIG. 9 and 10-slit and side view of the ratchet; FIG. 11 and 12-section and a top view of the mechanism for cutting blanks; FIG. 13 and 14 are front view and section of the transfer member; FIG. 15 and 16 are a sectional and top view of the mechanism for clamping blanks during riveting of the heads; FIG. 17-slit hammer for

head riveting; FIG. 18 and 19 is a sectional and side view of the drive cams for the transfer organ.

The bed of the auto-roll consists of a table 224 (Fig. 1), which is fixed on four legs 223 and 230 (Fig. 1-4). On the table there are two racks, the front and rear 225 and 226, to the sides of which two rods 260 are bolted to set the hammers. On the sides of the table, two struts 227 were fixed, on which the bearings of the main shaft were fixed. The front and rear pillars 225, 22 (5 at the top are four J29 bearings for two longitudinal shafts on which eccentrics are fitted, which are used to actuate hammers, dies and levers for the take-up mechanism. In addition, two brackets 228, 229 are attached to the frame for mounting spur gears for levers of supply, feed and receiving mechanisms.

A feed mechanism is installed under the table 224 (Fig. 5). Four ears 276 are screwed to the table, into which two rods 23 (Fig. B-8) are threaded, at the ends of which the feeding mechanisms are fixed. Each feeding mechanism consists of two rolls 7, 75, which are coupled between themselves cylindrical gears //. At the end of the roller 7, a bevel gear 13 is fastened, coupled: on the bevel gear 4, which is seated on the roller 25. The distance (clearance) between the rollers 7 and 73 is adjusted by a screw 27. The rollers 7, 75 are reinforced by the S holder 7, which sits on the rod25. Above the rollers 7, 75, guides 255 are located, which reach to the shear knife. A tape of material designed to make gvOzdey, is passed between the rollers 7, 75 and passes along the guide 255. The material under the knife is supplied by the rollers 7, 75 during their rotation, which they receive through bevel gears from the roller 25. To obtain cone tweezers both rods 25 together with the feeding mechanisms are driven into the swinging Movement from the main shaft (Figs. 2, 5) through a gear train and lever gear 246, 247, 249, 257, 255.

Two ratchets, one for two feeding mechanisms, are installed to drive the feeding mechanism. Snore 26 (Fig. 9, 10) is mounted on a roller 25, which rotates in the ears 2 attached to the holder 7. The ratchet rotates with the help of the pawl 32. On the roller 23 the brake paws 39 are fixed, which prevent the ratchet from moving back into the moment when the giving dog 52, having completed its work, will go back. The rotation of the ratchet through the bevel gears 4, 13 is transmitted to the rollers 7, 75, which, while rotating, feed the material under the cutting knife. When the tape from which nails are made cuts and leaves the feed rolls 7, 75 (i.e., becomes short), a new tape is inserted into the feed mechanism, which at its end pushes the remainder of the previous tape along the blade guide 255 to the full its use.

On the machine table, four cutting mechanisms, whose functions are to cut the studs, are strengthened. Each cutting mechanism consists of a box- / 5 (Fig. 11, 12) in which a slider 46 horizontally moves with a knife 59 fixed on it. The stationary skin 146 is fixed on the table 22 (Fig. 15,16). The horizontal movement of the slider receives from the pusher 47, one end of which is fixed on the axis 48 in the ears of the slider, and the other end on the axis 66 of the rod 49,

receiving movement vertically. On the slider 46, a spring 60 is fixed, which serves to hold the cut off pin 4 of the knife.

An essential part of the machine is also the acceptance mechanism. Its function is to take a hairpin from the cutting knife, bring it to the dies, put the hairpin in a vertical position and insert it into the dies. On the table 22 of the automaton in the rulers 752 (Fig. 13, 14), a slider 757 is mounted, which is driven in reciprocating motion. Two receiving mechanisms are fixed on the slider, one for each two knives. The acceptance mechanism is arranged as follows. In the two mandrels 90 there are springs 97 placed on the grippers 96, 775. At the ends of the grippers there are dogs 108 which hold the pin received from the knife; the pin is held by the pawls 108 at the end which is intended for riveting heads. Since the acceptance mechanisms are fortified dead on the slider 181, which has a translational movement, the stud, received by the mechanism, is transferred to the dies in a horizontal position. In view of the fact that when cutting a pin from a tape, it turns out that the studs go with pointed ends alternately on different sides (one to the right, another to the left, etc.), then each acceptance mechanism is designed so that until one pair of grips insert the pin into the dies, another pair of grippers will at this time take the studs from under the tray}, etc. In view of this, the acceptance mechanisms are made of two halves each (of two mandrels 90), which are connected to each other by means of adjusting screw / 07 s. left and right thread. The screw serves to adjust the spacing between the grips, which we need to change as the nail length changes.

On the table 224, eight fixed dies 757 (Fig. 15, 16) and eight movable dies 756 are fixed, for each knife two pairs, on the right and left side. This is done because, as mentioned above, the pins after cutting are made with ends pointed in different directions.

Movable dies 756 reinforced

in the sleeves / 5 / which are driven in the reciprocating motion necessary for closing and opening the dies. Movable dies receive movement through the ear 755, connected by an earring to the rod 129, which in turn is connected by a coupling to a slingshot 757, at the end of which is placed a roller 752, which is pressed by the eccentric 134 mounted on the shaft running along the machine.

Hammers serve the riveting head of the nail (Fig. 17). They are mounted in two 260 rods directly above the dies. In the rods installed eight hammers. Springs 69 are enclosed inside rod 260. The hammer 70 itself is screwed into the mandrel 68 with the ear 74, in which the roller 77 rotates freely on the axis 76.

The eccentric 79 (fig. 1), seated on the longitudinal shaft, in its rotation captures the roller and m no upwards hammer; at this time, the hammer spring is compressed and, when the roller 77 is thrown from the eccentric, the spring is expanded and under its action the hammer strikes.

The main shaft 88 (Fig. 2) is fixed in bearings 209, which are mounted on racks 227. Two cams 163 are mounted on the main shaft, which are used to actuate the cutting lever. In addition, three cylindrical gears are mounted on the shaft, which act to actuate the take-up and feed levers. In the middle of the shaft, a bevel gear 87 is fastened, which causes the longitudinal shaft that engages with it to rotate; the latter in turn is connected to the other longitudinal shaft of the cylindrical gears. A flywheel 27- is installed at the end of the main shaft. Next to the flywheel, two pulleys 275, 277 idle and a worker are used to drive the machine from the transmission.

The rotation of the stud from horizontal B to a vertical position and its insertion into the sockets of the dies is made, as already indicated earlier, by an acceptance mechanism. When the hairpin is clamped by the advance mechanism and the acceptance mechanism approaches the mechanism shown in FIG. 18 and 19, the rods 776, under the action of the eccentrics 724, lower and turn one of the cams 507, 302 of the gripper of the acceptance mechanism for 90 together with the pin. Then the rods 116, lower down below. use their fork to pull the clamps out of the receiving mechanism, and with this movement they insert the pin into the dies of the dies. After that, the plates are closed to clamp the inserted pin. The rods 776 begin to lift upward, and the grippers, under the action of the springs enclosed in the acceptance mechanism, return to their place, and then turn back 90 degrees to their original position.

The subject matter of the invention.

Claims (3)

1.Automatic machine for the manufacture of cut nails, consisting of feed rollers with ratchet drives, fixed and movable blades for cutting blanks, transfer bodies for transferring blanks from knives to clamping dies and hammers for riveting heads, characterized in that to obtain pointed nails frame 7 with feed rollers 7, 75 receives oscillations around rod 25 through transmission from the drive (Fig. 3, b and 8). 2. In the machine tool according to claim 1, a transfer member for transferring blanks from the blades to the clamping dies, characterized in that it is made in the form of a gripper rotatable and axially movable, provided with a spring clip 705 at the front end and mounted on a forward-moving a slider 757 (figs. 13, 14); for turning which gripper and pushing it forward, the push-rods 116 with fists 507, 502 (figs. 18, 19) are used for reciprocating. 3. In the machine tool according to claim 1, use on the movable knife 59 a flat spring 60 to hold the cut piece as it moves towards the transfer member (Figs. 2, 11, 12). to the author's testimony of M. V. Izotov and V. T. Suvorov No. 45587 FigZ u E to the author's testimony of M. V. Izotov and V / T. Suvorov № 45587  -. . (tp P S ttch ... about rm € € °° b ea | I yr : ® Fig @ (§ ©  rfilLspi :: to the authorship of M.V. Izotov and V / T. Suvorov L 45587 nriS Figsh Gh; w 5% w Well to the author's certificate of M. V. Izotov and V / T, Suvorov No. 45587