SU1641492A1 - Machine for making spring rings from coiled spring workpieces - Google Patents

Abstract

The invention relates to devices for assembling springs into rings of WITHOUT spring blanks and makes it possible to expand technological capabilities by expanding the range of sizes of spring rings. The machine includes a bunker, a piece work piece feed mechanism, a workpiece unwinding and twisting mechanism, a mechanism for moving the unwinding and twisting mechanism of a billet. All the mechanisms of the machine are driven by a camshaft with cams, driven by an electric motor through a gearbox. The means for moving the mechanism for unwinding and twisting the ends of the workpiece has an element for converting the constant swing amplitude of the drive lever into a variable amplitude for moving the mechanism for unwinding and twisting the workpiece; 2 hp ff, 5 ill.

Description

The invention relates to mechanical engineering and can be used to assemble springs into rings of twisted spring blanks.

The purpose of the invention is the expansion of technological capabilities by expanding the range of sizes of spring rings.

Figure 1 shows the kinematic scheme of the proposed automaton; figure 2 - the bunker of the machine, fig.Z - the feed mechanism of the workpiece; Fig. 4 is a diagram of the reversal of the workpiece in a planetary gearbox and a diagram of the mechanism for moving the mechanism for unwinding and twisting the workpiece; figure 5 - mechanism

the movement of the unwinding and twisting mechanism of the workpiece and the mechanism of unwinding and twisting the workpiece.

The automatic machine for the manufacture of spring rings consists of (Figures 1 and 2) a bunker 1 with a partition 2 and with movable interlocked tushers 3; a universal billet feed mechanism consisting of (Figures 1 and 3) cam 4 of the billet feed, lever 5, spherical swivel 6, lever 7 with eccentric mechanism 8, pusher 9 of billets mounted on the slide 10; the mechanism of reversal of the workpiece with a planetary gear, consisting of (figure 1 and 4) Cam 11 reversal, the lever 12,

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13, the toothed sector 1L of the gear 15, mounted on the shaft 16. On the shaft 16 is fixed the housing 17, the jia of which is mounted the spindle 18 with the stop 19 and gear 20. Inside the spindle 18 with the stop 19 and gear 20. and spring 22. Clamp 21 is pivotally connected to the lever 23, which interacts with the lever 24. The lever 24 is fixed on the rod 25 and is spring-loaded spring 26. The rod 25 is pivotally connected to the lever 27, which interacts with the cam 28 has taken hold. The shaft 16 is pivotally connected to the brackets 29-31, which are mounted on the frame 32. Gear 33 is attached to the bracket 29. Gear 34, movably mounted on the shaft 16, is attached to the bracket 29 by means of a spring 35.

The machine includes a mechanism for unwinding and twisting the workpiece, consisting of (Figures 1 and 5) a carriage 36, on which a slider 37 is attached with a clamp 38, which is spring-loaded by a spring 39. The slider 37 is hinged by means of the hook 40 by means of a lever 40, which through the cam 42, the lever 43, preloaded by the spring 44 tons gu 45, the lever 46 interacts with the cam 47. The carriage 36 on the roller bearings 48 is installed in the guides 49. which are fixed on the plate 50, and the plate 50 is fixed on the frame 32. To the frame 32 fixed stop 51, which interacts with the carriage 36 through bearing 52. On the carriage 36 is fixed centering stop 53 with bearings.

The mechanism for moving the unwinding and twisting mechanism of the workpiece consists of (figs. 1.4 and 5} a two-armed lever 54 with a terminal 55 bearing the hinge, Terminal 55 and lever 56 are connected by a flexible link 57 through block 58. The lever 56 interacts with the movement cam 59, and the lever 54 is pivotally connected to the carriage 36 by means of the rod 60

The drive of the machine consists of (Fig. 1) electric motor S1, a worm gearbox 62. From the worm gearbox 62, the rotation is transmitted to the camshaft 63, on which the cams 4,11,28,42,47 and 59 are fixed. The position 64 designates the spring blank .

Adjusting the machine (Fig.1-5).

According to the selected size (length) of the workpiece, a partition 2 and interlocked turners 3 are installed in the hopper 1

Depending on the length of the selected workpiece, the plate 50 with the carriage 36 is mounted on the bed 32 in such a position that the ends of the workpiece are on the stops 19 and 53 after feeding, while the condition must be maintained that after turning the workpiece the end of it on the stop 19 was

from the end of the workpiece on the stop 53 at a distance within: DMIn 1 MM, Dmax 20 mm.

The eccentric mechanism 8 sets the pusher 9 into such a position that after the hearth "and the ends of the workpiece are located on the stops 19 and 53 in compliance with the above condition.

On the lever 54, the terminal 55 is moved with the hinge in such a position that the movement of the carriage 36 is equal to the distance between the ends of the workpiece after the turn. The magnitude of this displacement is in the dependence Я2Ц

L2 FTi where - movement of the carriage 36 (mm);

Li-movement of terminal 55 on lever 54 (mm):

RI; 2 - radii of two shoulders lever 54 (mm)

The amplitudes of the swing of the lever 54 depend on the position of the terminal 55 with the hinge (Ri variable).

The amplitude of the swing of the lever 56 is constant (const). The machine operates as follows (Fig. I - 5).

The blanks 64 are individually removed by the pusher 9 from the hopper 1 and along the slit 10, the fixture is positioned so that the end of the billet protrudes from the stop 53 by 3-4 mm, the clamps 38 and 21 when raised over the stops 53 and 19 Thereafter the cam 4 moves in the opposite direction.

After being fed simultaneously: from the cam 47, the lever 46, the go 45 turns the lever 43 and the spring 44 presses the end of the workpiece on the stop 53 through the lever 43 by means of the clamp 43; from the cam 28 through the lever 27, the rod 25 lifts the lever 24 above the lever 23 and the spring 22 with the clamp 21 clamps the second end of the workpiece on the stop 19.

After this) at the same time: from the cam 11, through the lever 12, the toothed sector 14 rotates the gear 15 by 180 °, and the body 17 with the spindle 8 is the same with it; since the gear wheel 20, mounted on the spindle 18, meshes with the stationary gear wheel 33, then when the body 17 is rotated by 180 °, and with the support 19, with one stop, the clamp 21 and the end of the clamped workpiece are rotated 360 ° (the property differential); gear 34 is designed to sample the gap in gearing of gear wheels 20 and 33; from the cam 42, the lever 41 t ha 40 moves the slider 37 forward, and at one with it the clamp 38 and the workpiece unwinds, due to the difference in friction coefficients, and hence, the friction force between the workpiece and the clamp 38 (soldering with a notched VC) - . sliding friction on one side; and between the workpiece and the bearings of the stop 53 - rolling friction on the other side.

After that, simultaneously: from the cam 59, the lever 56, the flexible element 57, the terminal 55 and further the lever 54 moves the carriage 36 towards the workpiece, sandwiched between the stop 19 and the clamp 21; from the cam 42, the lever 41 t, the go 40 moves the slider 37 back, and in one with it is the clamp 38, which twists the ends of the workpiece.

After that, from the cam 47, the lever 46 tons ha 45 rotates the lever 43 and, compressing the spring 44, the pressure 38 from the action of the spring 39 rises and the assembled workpiece (spring ring) is released from the clamp above the stop 53,

Then at the same time: from cam 11, lever 12 to go 13, toothed sector 14 rotates toothed wheel 15 (now in the opposite direction), and after one with it spindle 18c with clamp 21, stop 19 and a spring ring between them; from the cam 28, the lever 27, the rod 25, the lever 24 rotates the lever 23, compressing the spring 22, and the clamp 21 rises above the stop 19 and the assembled spring ring falls into the finished product box.

Thereafter, the cycle is repeated through each revolution of the camshaft 63.

The use of the proposed automaton allows to expand the range of manufactured spring rings.

Claims (3)

1. An automatic machine for making spring rings from twisted spring blanks, containing a feeding device placed on the frame and connected by a common cam-lever drive for the piece-by-piece delivery of workpieces to a bunker, a driving lever and a pusher, a carriage, carrier clamping device for the workpiece, a mechanism for unwinding and twisting the ends of the workpiece with a means for moving it, including a drive lever, and a mechanism for turning the spring workpiece with a planetary gearbox, in order to expand technological capabilities by expanding the range of sizes of spring rings, the means for moving the mechanism for unwinding and twisting the ends of the workpiece is equipped with an element for converting the constant amplitude of swing of the drive lever into a variable amplitude for moving the mechanism for unwinding and twisting and twisting. including a double-arm lever with a hinge connected to it with the possibility of adjusting movement connected with a drive lever . 2. An automatic machine according to claim 1, characterized in that the device for single-piece dispensing the blanks are provided with a means for converting a constant swing amplitude of the driving lever. variable amplitude of the swing of the pusher, in the eccentric mechanism and spherical swivel joint. 3. An automaton according to claim 1, characterized in that the hopper is provided with a movable partition and interlocking billet pieces mounted with the possibility of adjusting movement. CSJ & cm ABOUT) chchso Ef 59 $ 5 SHFaEM Vi ti 38 X