SU1447502A1 - Arrangement for stretching springs - Google Patents

Abstract

The invention relates to the manufacture of springs, in particular, devices for stretching a section of a spring to a predetermined value, and allows them to expand their technological capabilities. The device has a vertical pipe 14 for accommodating a spring to be stretched. A stop 15 is installed in the lower part of the pipe, kinematically connected through a ball mounted freely in the hollow rotary cylinder 17 with the actuator piston 2 fixedly connected to the axially movable element of the attachment means 4. The extension stop is made in the form of levers interacting with the pneumatic actuator rod 24 . At the working position of the stop 15, when it restricts the movement of the spring in the pipe 14, the spring is fixed by collets from two ends of the stretchable section, the upper collet 4 fixedly connected to the piston 3 of the pneumatic cylinder 2, moves upwards and stretches the spring to a predetermined value determined by the position of the limiting levers. 5 il. o &

Description

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The invention relates to the manufacture of springs by pressure and can be used in stretching a section of a spring to a predetermined length.

The purpose of the invention is the expansion of technological capabilities.

FIG. 1 shows a device, an axial section; in fig. 2 is a view A of FIG. one; in fig. 3 - hinged stop in the working position; in fig. 4 — stretch limiter in two positions; in fig. 5 - stretched spring, general view.

The device contains a vertical plate 1, on which is mounted a pneumatic cylinder

piston 3 which is tough

connected along the axis with the collet 4 for securing the collet 4 fixed on it, the spring section stretching is located, which is located between the collet. At this time, the pull 19, which is connected to the piston 3 through the strip 6, moves away from the cylinder 17 and, under its own weight, due to the difference of the shoulders, it rotates clockwise. The ball 18 in it rolls down in the direction of rotation and releases the shoulder 16 of the support. The stop 15 also, under its own weight, rotates counterclockwise, freeing the cavity is the pipe 14. With further upward movement of the piston, its rod 24 comes into contact with the rollers 22 and 23 of the levers 20 and 21 and turns the levers until it contacts the second arms with the corresponding pusher 25 and 26. At this point, the spring is stretching (Fig. 4, to the right of the axis). The piston continues to move upwards. Pushers 25 and 26 under the action of levers

spring 12. the sleeve 11 is located in the shelf 13 welded to the plate 1. In the lower part of the holder there is an upper end of the pipe 14, in the lower part of which a double-shouldered support 15 is pivotally fixed. The second shoulder 16 of the support is placed in the corresponding slot of the misaligned cylinder 17 pivotally mounted on the plate 1. The cylinder 17 is muffled at both ends and

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nor the upper part of the spring being stretched. A bushing 5 is provided in the device for loading the spring. The conical part of the collet 4 is located in the corresponding hole of the bar 6, the spring-loaded spring 7 with respect to 2Q 20 and 21 moves downwards and through the path to the body of the pneumatic cylinder 2. The collet 4 of the lower version 8 presses the button 9, which

It contacts with the end plate 8 in turn, squeezes the collet 10 from the button 9. The button is located at the end of the clip 11, freeing the lower traverse of the traverse and the bottom end of the spring end. The downward movement of the piston with the collet 10 for securing the lower one is continued. The levers 20 and 21 continue the stretchable spring regions. The collet 10 is rotated and occupy a position disposed in the cage 11 and spring loaded. (Fig. 4, to the left of the axis). Included

air supply to the upper cavity of the cylinder. The piston 3 with the collet 4, in which the spring is fixed, moves downwards. The levers 20 and 2 continue to remain in the thrust position, whereby the lower collet 10 remains open and the spring 5 freely extends downward by the amount of tension. After the collet 4, continuing to move downwards, reaches the traverse, it contains a free ball 18 inside. Zigus 8 and lower it, the pushers 25 and 26. The cylinder is connected through bar 19 to the bar 6. Leaves from the levers 20 and 21, which, in the upper part of the device, hingedly with the help of the springs, two symmetrical two shoulders return to the original repleni. Upon further downward movement, chaga 20 and 21. On facing friend collet 4, it moves away from bar 6, releasing the arms 20 and 21 to each other, the vertical and the extended spring. Under its own but spring-loaded, installed on the role-40 weight spring falls into the container. At the same time, 22 and 23, each of which is jointly with the release of the spring: in the collet 4

t ha 19 turns the cylinder 17 counterclockwise. The ball 18, which is in the cylinder, rolls downwards, reaches the blades 25 and 26. The sleeve 5, the rod 24, the piston 3, clockwise, closing the internal KHOrjKa 9 with a hole, corresponding to the cavity 14. The time during which the ball rolls up to shoulder 16 of stop, this is the time for free fall of the spring in the container.

The spring is fed through the sleeve 5 into the device. After the stop has been installed in the initial position, it passes through the pipe 14 to the rest position (Fig. 3), the device is under 15 (the stop is closed - Fig. 3). Enabled to recycle. valve of pneumatic cylinder Air in this way, the supply of the device

given into the lower cavity of cylinder 2. by a vertical pipe for placing therein. The piston rises upwards. At this moment, the springs with an emphasis in the lower part, kine- under the action of springs 7 and 12 and the collets 10 55 are mathematically connected through a hollow ball and 4 the spring is gripped in the beginning of the cylinder with the pneumatic actuator piston and The expansion of the limiter in the form of levers. With further movement of the piston 3 interacting with the drive rod.

It operates with the rod 24 of the pneumatic cylinder 2. The second shoulder levers 20 and 2 periodically interact with each of the corresponding spring-loaded pusher

corresponding to the diameter of the spring being stretched.

The device works as follows.

with the collet 4 fixed on it, the spring section stretching is located between the collets. At this time, the pull 19, which is connected to the piston 3 through the strip 6, moves away from the cylinder 17 and, under its own weight, due to the difference of the shoulders, it rotates clockwise. The ball 18 in it rolls down in the direction of rotation and releases the shoulder 16 of the support. The stop 15 also, under its own weight, rotates counterclockwise, freeing the cavity is the pipe 14. With further upward movement of the piston, its rod 24 comes into contact with the rollers 22 and 23 of the levers 20 and 21 and turns the levers until it contacts the second arms with the corresponding pusher 25 and 26. At this point, the spring is stretching (Fig. 4, to the right of the axis). The piston continues to move upwards. Pushers 25 and 26 under the action of levers

Q 20 and 21 move downwards and, through Box 8, press button 9, which

allows to stretch the springs both small and long in a certain section of the spring with a total length of about 650 mm and more, thereby expanding the technological capabilities of the device. This eliminates the need for an electric drive and a reduction gear, and therefore, simplifies the device.

Claims (1)

Isobothy formula A device for stretching the spring, comprising a base, means for clamping and stretching with ipodvizhimuyu and movable from prnvod parts, clamping elements, means for opening the clamping elements with spring-loaded pushers and limiter stretching, characterized in that capabilities, it is provided with a spring-mounted pipe for accommodating the spring, mounted at the bottom of the pipe with a two-arm hinged support, means for moving two shoulders, made in the form of a pivotally mounted on the base of a hollow cylinder with a slot at one end and freely placed in the cylinder of the ball, having the ability to interact with one of the arms of the hinge support through the slot in the cylinder, the drive of the movable link is made in the form of a vertically fixed power cylinder having two rods, on the lower of which are fixed a clamping element in the form of a collet and a crosspiece inserted into the device of the traverse and spring-loaded to the cylinder body plate with a tapered hole for the collet and for interacting with g is a hollow cylinder, and the stretcher is made in the form of two levers mounted on the basis of symmetrical levers installed with the possibility of mutual gystism with one arm with the upper stem of the power cylinder, and with the other 0 spring-loaded pushers with traverse. P 2J Vui.Z fig.Z . FIG. five