SU1563818A1 - Arrangement for making wire split cotter pins - Google Patents

Abstract

The invention relates to the manufacture of wire products, can be used in the manufacture of wire adjustable cotter pins and allows you to simplify the design and improve performance and reliability. The device comprises kinematically coupled mechanisms for feeding, cutting and shaping the cotter pin through a camshaft drive. The pin-forming mechanism consists of a fixed and movable punches and a bending-forming plate with a shaped mandrel mounted on its end, installed with the possibility of horizontal and vertical movements. The feed mechanism consists of two feed rollers mounted on kinematically interconnected shafts, the upper one of which is driven, has a ratchet mechanism placed on it and is connected to the camshaft by means of a gear and idler and crank mechanisms. 3 il.

Description

The invention relates to the processing of metals by pressure, in particular, to devices for the manufacture of wire split pins, and can be used in all parts of the national economy in assembling various machines and components, including automobiles, tractors, and others. repair.

The purpose of the invention is to simplify the design and improve the performance and reliability of the device.

FIG. Figure 1 shows a kinematic diagram of an apparatus for making wire adjustable cotter pins; in fig. 2 - frontal part with rocker mechanism; in fig. 3 - the same, side view.

The device for making wire split pins comprises a frame 1 on which a drive cam shaft 2 is mounted with a crank 3 of the wire feeder 4 actuator rigidly mounted on it. The crank 3 is connected to the slide 5 by means of a finger 6 entering the longitudinal groove 7 of the link 5, mounted on an axis 8 and made with a sector gear 9, engaging in a gear with a cylindrical gear 10, on the shaft of which is mounted the connecting link of the ratchet ensuring the frequency of wire feed, made in de disk 11 with a dog 12, and the role of the ratchet wheel performs the cam 13 mounted

ate

about

OE 00

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on the shaft of the cylindrical gear 14, which engages with the cylindrical gear 15, on the shaft of which a lower wire feed roller 16 is mounted, cooperating with the upper roller 17 mounted on the shaft of the cylindrical gear 14.

The wire 4 for the manufacture of cotter pins, wound on the drum 18, is drawn through the guide tube 19, then passes between the feed rollers 16 and 17 and through the guide tube 20.

On the drive shaft 2 mounted cam

21drives of wire cutting mechanism, interacting with spring-loaded, flat cantilever arm fixed on the axis

22 lever lever 23 knife 24.

The drive shaft 2 is also fitted with a copier 25 driving a vertical reciprocating movement of the bending-forming plate 26, which serves to form the cotter pin by means of a slider 27, a detachable copier 25 and carrying at its end freely installed with the possibility of horizontal movement in its groove of the bending-forming plate 26 which is fixed at one end with a finger 28 in a vertical groove

29 sled 30, with the ability to move up and down, while the sled

30 is moved reciprocally along the guide prism 31 by means of copier 32 mounted on the drive shaft 2 by means of a finger 33 fixed on the slide 30 and the copier 32 is included in the figure cutout. The molding plate 26 is made with regard to at its end it was possible to install replaceable shaped mandrels, respectively, the size of the pin head, ensuring proper bending.

The drive of the pusanson 34 of the pin forming mechanism is driven from the cam 35 mounted on the drive shaft 2 by means of a driver spanning it, having at its free end an inclined pz into which the finger 37 of the punch 34 provides the working stroke of the punch to the side of the fixed matrix 38 made stop 39 wire blanks, which can be installed depending on the specified size of the cotter pin.

Q 5

-

five

The following items on the drawings (marked: 40 - free protruding end of the drive shaft; 41 - ready cotter pin; 42 - crank slot; 43, 44 - removable punch liners and dies; 45 - interchangeable shaped mandrels.

The apparatus for making wire split pins works as follows.

The drive shaft 2, made with a free protruding end 40 allowing the device to operate with both an autonomous drive and a spindle from a turning or milling machine, rotates the crank 3, from the rotation of which the link 5 with its sector gear 9 drives the rotation the cylindrical gear 10, and therefore the gears 14 and 15, as a result of which the rollers 16 and 17 feed the wire 4 up to the stop 39, after which, due to the triggering of the ratchet mechanism, the rotation of the gear 14 and the wire feed stop.

When the cam drive 21 is rotated, the spring-loaded push lever 23 is lowered and, with the help of the knife 24, cuts off a wire blank of a cotter pin of a prescribed size using the stop 39.

I

By rotating the copier 32 slide

30 moves in the guiding prism 31, with the result that the bending-forming plate 26 also moves in a horizontal plane and stops at a position when its shaped mandrel is above the linch pin. Under the influence of the copier 25, the slider 27 is lowered, the flex-forming plate with its shaped mandrel 45 also lowers and presses the linch pin into the gap between the die 38 and the die 34, imparting the desired splint shape to the blank. Under the action of the cam 35, the carrier 36 lowers the punch 34 to the side of the matrix 38, the pins are stamped, and at this time the shaped end of the bending-molding plate 26 is removed from the pin of the pin 32 when the copier 32 rotates and the punch 34 moves to initial position. Finished cotter pin 41 falls into the receiving tray.

51

All manufacturing operations for the cotter pin take place in one revolution of the drive shaft.

The conversion of the device for the manufacture of wire adjustable cotter pins of the desired dimensions is as follows.

By moving the finger 6 in the groove 42 at a predetermined position, an increase or decrease in the circumference of the arc of rotation of the sector gear 9 of the scenes 5 is achieved, which ensures the supply of the workpiece of the desired length, while the stop 39 also moves accordingly. To ensure the remaining dimensions are removable inserts 43 34) and 44 (on the movable matrix 38), as well as interchangeable shaped mandrels 45, which are worn on the end of the bending-forming plate 26 and are selected in accordance with the desired size of the cotter pin.

Claims (1)

Using cam mechanisms mounted directly on the drive shaft to transfer motion to the main links of wire feeding and cutting, pin forming, as well as combining two operations (bending the wire with an inserter and bending the pin head through the mandrel) distinguish my device from the prototype. This device does not require a fuse that would hold it in place at the time of cutting the wire, nor does it require the puller of the finished dowel pin. The design of this device is simple, thereby reducing the metal consumption, weight and cost of the device, increasing its performance. The compactness of the device and the execution of the drive shaft with a free end, allowing the device to be used both as an autonomous drive and as a drive from a machine cutting spindle, for example, turning, milling, etc., makes it possible to use it most efficiently on small and Medium-sized enterprises with high quality manufacturing wire adjustable cotter pins. Invention Formula A device for the manufacture of wire split pins, five 0 Mounted on the bed and kinematically connected by means of a drive camshaft, a wire feeding mechanism, a cutting mechanism including a fixed knife and a movable knife fixed on the drive lever, and a pin molding mechanism, characterized in that, in order to simplify the design and increase productivity and reliability, the pin-forming mechanism consists of fixed and movable punches, of which the movable pin has a finger on its side and is connected to the cam of the camshaft via A drove mounted with vertical movement, on its upper part there is a frame for interacting with the cam, and on the lower there is an inclined groove for interacting with the movable punch finger, a bending-forming staste with a shaped mandrel fixed at one end, and a finger mounted, on the second end, installed with the possibility of vertical movement of the slide mounted on 0 the upper end of the frame to interact with the cam of the camshaft and the groove made at the lower end in which it is mounted with the possibility of horizontal movement 5 bending-molding plate, and placed in the guide frame slides with a vertical groove on the side surface for interacting with the finger bending-forming plate, installed with the possibility of horizontal movement by means of a vertical finger mounted on the slide, placed with the possibility of interaction with fixed on the distribution the shaft is a copier, and the feeder consists of two feed rollers mounted on kinematically interconnected shafts, the upper one of which is of water, it is disposed thereon and a ratchet mechanism coupled to the camshaft via a gear train and a rocker and krivoship- but-rod mechanisms. five b 27 25 36 35 chg BUT 29 2826 38 45 V L 10 9 15 sixteen 3Ґ. figure 1 Fi.g.2 NEF. 3