SU516458A1 - End Spiral Extension Spring Making Machine - Google Patents

Description

one

The invention relates to the field of manufacture of tension springs with bent-off extreme loops-hooks.

 A known machine for the manufacture of stretch springs from an endless helix5 containing mechanisms for feeding the workpiece, a mechanism for bending the Vitkhs, a mechanism for forming a flap and a mechanism for cutting, made in the form of knives mounted on a Haix creeper, moving in the opposite direction.

A disadvantage of the known automaton is the low quality of the springs manufactured.

A distinctive feature of the proposed - mogs); The automaton is that it sleeps; - it is a clamping mechanism, executed in the form of two pairs in parallel behind the feeding mechanism parallel to each other: clamping jaws mounted on sliders moving along the standard rail by means of directional swings, one a pair of clamping jaws is installed; on the sliders, together with cutting blades, and the mechanism for the formation of hooks is made 13 in the form of a pair of forming punches located on the sliders, the first interstitial part of the halves carrying the clamping jaws is placed.

Mechanism of bending BJITKOB vyshod, nvn in the form of a rigid reproduction on the frame of a hard rocket, carrying a slide with a punch of bend, on the working surface of which a radius groove is made, which is the outer diameter of the spring.

, FIG. 1 shows schematically the proposed automaton j in FIG. 2, a crawler with rolling guides; in fig. 3 and 4 of the interaction pattern of the punch bend with the helix (view on the arrow A of Fig. 1); in fig. 5 is a diagram of the interaction of a punch on the folds, having on the working part na3s with a helix and a section along GG; in fig. 6 and 7 is a diagram of the interaction of the forming punches with the helix (Fig. 6, interaction, Fig. 7, the end of the interaction, view B in Fig. 1).

The machine contains a spiral feeder mounted on stash1, consisting of a slider 2, on which a hollow spindle 3 is attached. At one end of the pinnacles there is a clamping prism 4, and on the other side a pin 5, which interacts with the sixth wheel mounted on the base. 6

On the bracket 7 there is mounted a bend mechanism consisting of a slide 8 with a zat-, fastened, and on it a punch 9 on ibki. It is possible to install the slider 8 and on the Other parts of the station ASh 1, On the bed, 1 the mechanism for forming the hooks, consisting of two Alzuns 1O and 11, on which the forming punches 12 and 13, and the sliders 14, 15, 16, 17, are fixed, and which form two pairs located symmetrically with respect to the axis of the helix and the formers. Punch 12 and 13.

On the slide 14-17 fixed clamping jaws 18-21, cutting knives 22, 23 mounted on the slide 16, 17 together with clamping jaws 20, 21.

To maintain the helix on the bed 1, the anvil 24 is mounted, the Sliders 2, 8, 10, 11, 14, 15, 16, 17 are mounted on the guide rolls. Each such guide consists of two diamond-shaped guides 25 and four separators 26 with a set of rollers.

The automatjacket also not shown in the drawing is an electric motor, a gearbox, a camshaft and the necessary gears, which bring these mechanisms into operation in accordance with the sequence diagram.

The working part of the punch 9 folds made in the form of a wedge (Fig. 3, 4). Depending on the height of the hooks on the working part of the punch 9 can be performed, the groove O at the outer diameter of the spiral (Fig. 8). The machine works as follows. The punch 9 bends the portion of the helix of a given length corresponding to the length of the spring produced (Fig. 3). Then the spindle 3 turns the helix about its longitudinal axis, and the slider 2 moves the helix in the direction of its longitudinal axis to the right; the magnitude of the agile angle and the movement of the helix depend on the shape and size of the hook, as well as on the diameter of the wire. After that, the punch 9 produces a second bend (Fig. 4). Then the spindle 3 turns the helix to the clamping position: the jaws 18, 19, 2O, 21 clamp the helix and the bent portion. i Sliders 1О, 11. enter into interaction with the helix (Fig. 6, 7) and form hooks, the stroke of the sliders lO, 11 depending on the outer diameter of the spiral, the shape and dimensions of the hook and the amount of elastic deformation of the wire.

At the same time, the prism 4 releases the spiral, and the slider 2 with the spindle 3 moves to the extreme left position, after which the prism 4 clamps the spiral again. After the molding is completed, the slide blocks 10, 11, 14, 15, 16, 17 are consumed, and the slide 2 feeds the helix to the right to the knives 22, 23, which cut off the finished spring from the helix. Then the slider 2 moves the helix to the left by an amount depending on the length of the spring produced, after which the cycle is repeated.

Since the punch bendings, the forming punches and the cutting-knives are separated, they do not go inside the foldable Witts, i.e. they do not stretch and do not expand them. Due to this, it is possible to manufacture springs with hooks formed by a coil, or a part of it, which is not deformed along the contour. The clamp of the spiral on both sides of the bent turns in the process of forming makes it possible to install the hooks along the spring axis.

Claims (2)

1. An automatic machine for the manufacture of extension springs from an endless helix, containing the workpiece feed mechanisms installed on the frame, the coil bending mechanism, the hook forming mechanism, and the cutting mechanism consisting of knives mounted on sliders moving in the opposite direction, characterized in that in order to improve the quality of the springs produced, it is equipped with a clamping mechanism, which is completely scrambled in the form of two pairs of clamping jaws mounted parallel to each other parallel to the feeding mechanism moving through the frame by means of roller guides, while one pair of clamping jaws is mounted on polishing blades with cutting blades, and the mechanism for forming hooks is made in the form of a pair of shaping punches located on sliders placed between sliders carrying clamping jaws. 2. Automaton popl., Distinguishing - with the fact that. the mechanism of the bending of the coils is made in the form of a bracket rigidly mounted on the frame that carries a slide with the punch of the bend, on the working surface of which a groove is made corresponding to the outer diameter of the spring. 516458 b  6 ig.g i, 1 View of FIG. Vida ig. YY 12 Ig.V e, .20 13 18 Vndb 21