SU1227297A1 - Arrangement for coiling springs - Google Patents

Description

moving and bearing at the other end of the collet and nut with a pin mounted on the spindle with the possibility of rotational movement and retarded relative to the earring, a slide with an annular groove located in the guide grooves of the spindle and carrying two rods of different height with slots for the passage of the pin and secured I

The invention relates to the processing of materials by pressure, in particular, to a equipment for winding on the mandrel tension springs of increased rigidity, equipped with a tapered back and used in the turn of a rolled ring, mainly in rubber lip seals.

The purpose of the invention is to improve performance.

FIG. 1 shows a device for winding springs, a kinematic diagram; Fig. 2 is a view A of Fig. with several successive positions of the rocker arms and the corresponding positions of the mandrel and the abrasive disk; on fig.Z - section bb in fig. 2; in fig. 4 - view B in FIG. (mandrel extension assembly); on fig.z cut GG in figure 4; Fig. 3 (on an enlarged scale). A coci OHT device from a fixed base 1 on which an uncoiler 2, a winding mechanism 3 with a tool 4 for articulating the mandrel and a tool 5 for its orientation are mounted, the node the feed 6, the puller 7, the tool 8 for sharpening the mandrel tip with the mechanism 9 for sharpening the tip of the mandrel, the tool 10 for controlling the length of the mandrel, and the node 11 for extending the mandrel.

On the base, except, the bracket 12 is mounted with four end vanes 13, 4, 15 and 16.

The mechanism of pncncn 3 from electric motors 17, V-belt transmission 18. g orichonch shaft 19 (Fig. 1), a pair of koi 1kg;

on the base of the device of a spring-loaded lever with rollers mounted with the possibility of interaction with the walls of the annular groove of the slide and connected to the crust of an electromagnet located on the base of the device, the excitation winding of which is electrically connected with the mentioned switches.

gears 20 and 21, the spindle 22, the mandrel 23 and the nut 24 with the gripping body 25 (Fig.Z). It also includes the 4 hinge tool.

a mandrel, consisting of an earring 26, hingedly mounted on a horizontal shaft 19, and means 5 for orienting the mandrel, including two adjustable stops 27 and 28, a connecting rod 29, a two-arm lever 30, a spring 31 and an electromagnet 32, the field winding of which is electrically interconnected Zana with limit switches 13 and 16 (figure 1).

The feed unit 6 contains a yoke 33, on one shoulder of which a mechanism 34 for feeding the wire 35 with a working end a is fixed, and on the other - a counterweight 36. On the yoke 33, in addition, a stop 37 and a copier 38 are fixed (FIG. 1).

The puller 7 includes a disk 39 mounted on the shaft of the electric motor 40 (figure 1).

Tool 8 sharpening tip

the mandrel consists of a lever 41, tparnirno-fixed on a horizontal shaft 19, a spring 42, an adjustable stop 43 and rigidly fixed on

the lever 41 of the pad 44 on which the contact roller 43 is mounted, as well as the sharpening mechanism 9 of the mandrel tip consisting of an abrasive disc 46 fixed to the shaft

motor 47 (FIG. 2), and visor 48 (FIG. 3) for orienting mandrel 23 prior to sharpening and during sharpening. At site 44, the tool also has a 10 control

the length of the mandrel, containing two shoulders lever 49, spring 50, adjustable

the stop 51 and the conductive plate 52 are insulated on the double-shoulder lever 49 (FIG. 2).

The mandrel extension assembly 11 consists of a nut 53 fixed with two half-rings 54 at the end of the spindle 22 with the ability to perform only rotational movement, a hollow threaded rod 55 with a key 56 installed in the hole 57 of the spindle 22, a band brake 58, a slide 59 with an annular groove 60 and two rods 61 and 62, mounted on the slider 59, located in the opening grooves 63 of the spindle 22 with the slots 64 and 65 containing, which do not coincide in height. On the nut 53 is rigidly fixed ring 66 and pin 67, and the hollow threaded rod 55 contains a collet 68 (Fig.4.5 and 6). The mandrel extension assembly 11 also includes a lever 69 (Fig. 1) with a roller 70 (Fig. 4), a spring 71 and an electromagnet 72, whose excitation winding is electrically interconnected with limit switches 4 and 15 (Fig. 1).

The device works as follows.

In the initial position, the electric motors 17, 40 and 47 are disconnected, and the excitation windings of the electromagnets 32 and 72 are de-energized. The mechanism 34 of the wire under the action of the counterweight 36 occupies its extreme upper position. The riot of the wire 35 is laid in the softener 2, from where the wire is fed into the mechanism 34 so that from its working end and protrudes its end, sufficient to grip its gripping body 25.

The mandrel 23 with a pointed tip with collet 68 is secured in a hollow threaded rod 55, which is maximally extended from spindle 22. Due to the contact of the mandrel 23 with the end of the wire, and earring 26 with an adjustable stop 28, the spindle 22 takes a vertical position. The lever 69 under the action of the spring 71 occupies its extreme upper position, holding the rollers 59 in its upper position with its rollers 70 in the upper position.

Operation begins by turning on the electric motors 17, 40 and 47.

The rotation from the electric motor 17 through the rotational gear 18, the horizontal shaft 19 and the toothed bevel pair 20 and 21 is transmitted by the spindle 22, and from it to the nut 24 with the hook 2772974

a cotton organ 25 and a hollow threaded rod 55 with a mandrel 23.

The gripping body 25 grips the end of the wire 35 and the winding process J begins on the rotating mandrel of the tension spring. The winding process of the coils closely results in a force deflecting the wire, and with it the wire feeding mechanism 34 to the free end of the mandrel 23. The mechanism 34 is lowered and the rocker arm 33 tilts.

As the coils winding, the wire feed mechanism 34 becomes more and more opus-. kayts down the arc of a circle, and the mandrel 23, connected with him by wire 35, and with it the spindle 22,, deviate from its original vertical position. The hinge installation of the shackle 26 allows the spindle 22 to make these movements unhindered, and the mandrel 23 does not lose its straightness.

Moving the mandrel 23 leads to

20

25

its interaction with the tool 10

thirty

control the length of the mandrel. In the case when the length of the mandrel 23 lies within the prescribed limits of its pointed tip, in contact with the conductive plate 52, it forms a signal that enters the electrical circuit of the device and is then used in the circuit of the mandrel extension assembly 11. If the length of the mandrel 23 is reduced, then the contact does not occur and the electrical signal

35 is not formed.

Further movement of the mandrel 23 leads to the contact of its pointed tip with a rotating abrasive disk 46. The clamping process begins.

Copier 38 mounted on the yoke 33, interacting with the contact roller 45, deflects the lever 41 in the direction of movement of the mandrel 23, and

 together with it, the platform 44 and the on-site mechanism 9 for sharpening the mandrel tip. The profile of the working surface of the copier 38 is selected so that during

50 of the entire sharpening process, carry out a small but constant pressure of the tip of the mandrel 23 on the rotary-abrasive disk 46, and at the end of the sharpening process

55 to the side and hold in this position until the end of the winding process, the lever 41 together with the sharpening mechanism 9 of the mandrel.

I

FIG. 2 shows several successive positions of the rocker arms 3 with the mechanism 34 (points 1, 2, 3 and 4) as well as the corresponding position of the mandrel 23 (points 2, 3 and 4) and the abrasive disk 46 (points 1, 2,

t /

3 and 4).

The winding of the coils and the deflection to the side of the mandrel 23 causes a deviation in the same direction of the earring 26. This continues until the coils are wound almost the entire length of the mandrel 23. When the last few more coils of the earring 26 remain, it abuts against the adjustable stop 27 and the winding of these The coils bends the mandrel 23 somewhat. Due to the bending, the mandrel 23 after the winding, twisting and breaking of the wire is completed, straightens, ceasing contact with the wire feeder 34. The latter is released and, under the action of the counterweight 36, begins to return upward to its original position.

During the working stroke of the wire feeding mechanism 34, and with it the yoke 33, the stop 37 alternately interacts with the limit switches 13, 14, 15 and 16, but at the same time clicks, and the switches do not operate, the return occurs. course.

The first is triggered off off

The reader 16, whose position on the chip 12 is chosen below as far as possible. At its signal, a current is supplied to the excitation winding of the electromagnet 32, the measles which is drawn internally and through the leverage system moves the link 26 to contact with the adjustable stop 28. The mandrel 23 quickly takes a fixed vertical position and wound a spring, in contact with its turns with the cylindrical surface of the shaft. Dysvga 39 is reset.

A further return stroke of the rocker arm 33 triggers the operation of the limit switch 15. The electrical circuit of the device is arranged in such a way that the signal from this switch is destroyed by the signal from the contact of the mandrel 23 with the conductive plate 52, which was previously formed. If the second signal was not formed, which corresponds to the condition of winding the spring on the shortened mandrel, then the signal from the end of the switch 1 5

five

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five

7297

6

not destroyed. It is used to supply electric current to the excitation winding of the electromagnet 7.2, the measles of which, overcoming the resistance of the spring 71, retracts, shifting the lever 69 to the lower position, and with it the slider 59.

. The upper position of the slider 59, corresponding to the original, holds in the upper position the rods 6 and 62 (see Fig.5). The notch 64 of the shaft 61 is above the notch 65 of the rod 62, and the pin 67 of the nut 53 is fixed at the level of the notch 65. The spindle 22 that has started to turn clockwise turns the rods 61 and 62 into this movement. The nut 53 is slowed down and tends to remain at rest, but the rod 61 for pin 67 podkhvrashaet it and draws 0 into motion. It is necessary for the slider 59 to move to the lower position, which corresponds to the operation of the electromagnet 72, as the slot 64 of the rod 6 moves to the level of the pin 67. The nut 53 for some time, stopped, is disconnected from the rotational movement of the spindle 22 until the pin 67 begins to contact with rod 62, which podhvvashhaet it and thereby again entices the nut 53 into movement. But during this time the nut 53 has time to turn relative to the spindle 22, and hence the hollow threaded rod 55 half a turn. The rod 55 goes deeper into the spindle 22 by a half pitch of the thread, and the mandrel 23 extends as much from it.

five

0

five

The next switch is the limit switch 14, the signal from which is intended to de-energize the excitation winding of the electromagnet 72. The rod 71 pushes the lever 69, and with it the slider 59 returns to its original position, at which the slot 65 again moves to the level of the pin 67 and the nut still makes half a turn to the contact of the pin 67 with the rod 61.

Thus, in the case of using the shortened mandrel 23 in one return stroke of the rocker arm 33, the nut 53 is rotated twice by half a turn, because the hollow threaded rod 55 goes deeper into the spindle 22 by one pitch and the mandrel moves out of the spindle 22 by the same amount.

The last switch is triggered switch 13, the position of some

on the bracket 12 is selected as far as possible. By its signal, the excitation winding of the electromagnet 32 is de-energized, which causes the release of the earring 26 to be released. However, the position of the earring 26, and with it the support 23, does not change, since on the one hand it is limited by the adjustable stop 28, and the other by the tip wire 35, already extended from the working end and the mechanism 34 of the wire to start a new cycle.

The wire feeder 34 reaches its extreme upper position, the rotating gripping member 25 captures the end of the wire, and a new cycle of operation of the device begins.

3S

Before operating the device, a hollow threaded rod 55 with a fixed mandrel 23 is installed as Bbffiie as possible. A power reserve equal to the value of L is the stock of the mandrel 23 for sharpening.

The installation in the device of a tool for sharpening the mandrel tip completely eliminates unforeseen stops intended to change the blunt mandrels and thereby increase the productivity of the device. Especially useful is the sharpening of the mandrel tip on the run of the device in the manufacture of high-rigidity springs when the sharp tip of the mandrel is blunt quickly and the blunt mandrels change frequently.

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Editor N.Slobod nickname

Compiled by V. Buzhinsky Tehred N. Bonkalo

Order 2243/9

Circulation 655Subscribe

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Rastaskal nab., d.4 / 5

Production and printing company, Uzhgorod, Projecto st., 4

Proofreader E. Roshko

Claims (4)

1. A SPRING WINDING DEVICE containing windings mounted on the base including a spindle, a cantilever mandrel, means for hinging the mandrel and its orientation, a rocker arm, on one shoulder of which a wire feed mechanism is fixed, and on the other - a counterweight, a wound puller springs and travel switches located on the trajectory of the rocker arm, characterized in that, in order to increase productivity, the winding mechanism is equipped with a horizontal drive shaft with a conic rigidly fixed to it gear, and the device is electrically connected means for controlling the length of the mandrel and the extension of the mandrel, as well as means for sharpening the tip of the mandrel, made in the form of an adjustable stop mounted on the base of the device, mounted on the beam of the copier, a spring-loaded lever pivotally mounted on a horizontal shaft the furrow of the winding and installed with the possibility of interaction with an adjustable emphasis, and placed on the platform of the tool fixed to the end of the spring-loaded lever for I sharpen the tip of the mandrel and the contact roller, which is installed with the ability to interact with a copier mounted on the beam, while the tool for hinging the mandrel includes an earring pivotally mounted on the drive horizontal shaft of the winding mechanism, a spindle mounted in the earring with guide grooves in which it is rigidly fixed the mandrel and the bevel gear rigidly fixed to the spindle, mounted to interact with the bevel of the horizontal drive shaft. 2. The device according to claim 1, characterized in that the means for sharpening the tip of the mandrel is provided with a visor for orienting the mandrel before sharpening and during sharpening. 3. The device according to π.1, characterized in that the tool for controlling the length of the mandrel is made in the form of a spring-loaded two-shouldered lever contact pivotally mounted on the site of the tool for sharpening and installed with the possibility of interaction with an adjustable stop, and a conductive plate isolated on one, from the shoulders of the two shoulders of the lever and electrically connected to the extension of the mandrel. 4. The device according to claim 1, about t l and h a Further, the mandrel extension unit is made in the form of a threaded pair located on the spindle and including a hollow threaded rod, one end mounted in the spindle with the possibility of axial SU. „. 1227297 A1 1 227297 of movement and bearing at the other end a collet and a nut with a pin, mounted on the spindle with the possibility of rotational movement and braked relative to the earring, a slider with an annular groove located in the guide grooves of the spindle and bearing two different height rods with slots for the passage of the nut and fixed on the basis of the device of a spring-loaded lever with rollers mounted with the possibility of interaction with the walls of the annular groove of the slider and the electromagnet connected to the armature, located on the base and the device for the excitation winding of which is electrically connected to said limit switches.