SU657896A1 - Automatic machine for making sinuous spring washers - Google Patents

Description

one

This invention relates to a technique for manufacturing spring washers.

A device for manufacturing spring washers with bent ends is known, which provides a segment of a spiral turn with simultaneous bending-ends of the washer and consists of two knives and two counterblades moving towards the other l. The device is suitable for the manufacture of single-turn wavy spring washers. Multi-turn wavy spring washers on the device cannot be made.

An automatic machine for manufacturing double spring washers with bent ends 2 is known. It works as follows: the wire is fed through the correct device into a feed mechanism of the clamp type, which pushes the wire into the coiling tool. The result is a vertical spring screw. One or two turns are cut from this spring by a knife controlled from the fist, which are simultaneously caught by the pliers controlled by the cam and transferred to the shaping station, in the shaping device that operates from the fist, the ends

rings bend back. Tick jaws are equipped with spring-loaded protrusions, which are included in the spaces between the spirals and when forming,;

At the end of the shaping process, the pincers open and return to their original position, where a new ring is gripped, which, pushes the finished ring out of the automaton,.

The disadvantage of this machine is low productivity. Performance performance limits the transfer mechanism of the washer, as ITT increases the speed of transfer and return of ticks, which increases the dynamic loads of the portable mechanism. For the same reason, it is necessary to carry out the segment, the transfer and the shaping process with the help of cam mechanisms. As is well known, cam mechanisms are dynamic and at high speeds quickly wear out and cause higher noise. All of this prevents performance gains. As a result of the fact that the ends are hemmed on a non-spurious matrix, the hem of the upper and not the turns is different. A known machine for the manufacture of spring washers, which contains mechanisms for feeding wire, spiral winding, cutting, transferring washers and shaping 3. The mechanism for transferring washers from the mechanism of winding to the mechanism of shaping is made in the form of rotary tongs mounted on an axis fixed in the machine frame, and moved by a system of gears and cams around a vertical axis. The tongs are mounted on a horizontal movable slider, moved by a rack, which also serves to open the tongs. The shaping mechanism is made in the form of a punch provided with carriages carrying support pins for fixing individual turns in the shaping process. Movable elements of the shaping mechanism receive mutually perpendicular movement from their drive. The machine works with the periodic switching on of the wire feed and the forming of the finished washer during the continuous movement of the other mechanisms ..- The wire feeder feeds the wire in sections equal to the reversal of the washer helix. Getting into the winding mechanism, the wire is curled in it spiral and cut off with the help of the mechanism. The tongs support it and then transfer it to the fur of the mold. The pins are inserted into the space between the spirals, and the stamp is crimped, giving it the final shape of the wave washer. The disadvantages of this automaton are the many cam mechanisms, as well as the reciprocating movement of the washer transfer mechanism. As a result, the performance of this automaton is small. In addition, the simple kinematic connection between the mechanism of form-building and other mechanisms of the automaton does not give a constant cycle. Because of this, an automaton disorder occurs frequently, the pincers fall under the press. The upper and lower turns are not podbig, the forming process is carried out only under the action of the upper punch. The matrix is in a non-moving state, as a result of the deformation rate of the lower and upper turns uneven. The aim of the invention is to improve the performance and reliability of the machine, as well as improving the quality of the manufactured washers. For this, in an automatic machine for manufacturing wavy spring washers containing wire straightening and edge feeding mechanisms, winding mechanisms, sections, shaping and transfer of washers installed on the frame, the transfer mechanism of the washers is made in the form of axially rotatable in one direction by means of the Maltese disk mechanism with mounted on it with the help of the axes of several pairs of ticks, interacting with two fists, one of the fists mounted on the axis of the disk with the possibility of swinging around it with p the power of the crank mechanism, and the other is fixedly mounted on the frame. The mechanism for shaping the washers is made in the form of two sliders, one of which holds a punch, and the other has a die, and the mechanism for transferring the washers is installed with the possibility of rotation in the direction of the punch of the shaping mechanism. Fig. 1 shows a kinematic diagram of an automaton for manufacturing wavy spring washers; 2, the same top view; on fig.Z - view along arrow A in figure 1; figure 4 is a view along arrow B in figure 1; in FIG. 3, section BB, in FIG. 3; figure 6 is a section of the GG on fig.Z; figure 7 - section dD in fig.Z; Fig.8 - section EE of Fig.Z. On the base 1 of the machine mounted drive 2, the drive shaft 3, containing the flywheel 4, the electromagnetic clutch 5 and the cylindrical gear G. Ball 7 drive slide includes a cylindrical gear 8, fist 9 and crank 10 feed. The machine also has an eccentric shaft 11, a cutter drive shaft 12 comprising a cylindrical gear 13, a bevel gear 14 and a cut crank 15, and an intermediate shaft 16 including bevel gears 17, 18 and 19. The intermediate shaft 20 includes a bevel gear 21 and a cylindrical gear 22, the drive shaft 23 of the shaping mechanism has a cylindrical gear 24 and two cranks 25 and 26 of the shaping mechanism. The frame also has the correct rollers 27, a feed mechanism containing a slider 28 on which the clamp pliers are mounted 29, the clamp control fist 30 and the return spring 31. The clamp control mechanism consists of a lever frame 32, a return spring 33 and a lever 34 rigidly connected to the fist 30. The floating wiring 35 is spring-loaded springs 36. A spiral formation tool (see Fig. 4) consists of a guide roller 37, a diameter-forming roller 38, a freely rotating mandrel 39 of a shagosadopal support 40 and a fixed knife 41. The shaping mechanism (see fig-l) consists of a matrix 42 fixed on a slider 43, and is connected through the knee-lever m Mechanism consisting of a lever 44, a two-armed lever 45, a connecting rod 46 and a punch 47, with a crank 26. The punch 47 is fixed on the second slide 48, connected by a second knee-lever mechanism, which consists of a lever 49, a two-armed lever 50, a connecting rod 51 , with crank 25.

The cutting mechanism consists of a movable knife 52, which is attached to the slider 53 and connected through a connecting rod 54 to the crank 15 of the cut. The transfer mechanism of the washers (see Fig. 2-7) consists of an eccentric shaft 55, on which a conical gear 56 is mounted, the crank 58 of the Maltese cross drove 57, and a hollow shaft 59 on one side. The hollow shaft 59 is integrally formed with the fist 60, and on the other hand, through axis 61, is connected with crank 58 by means of pulling rod 62. The washers transfer mechanism also has a shaft 63 inside the hollow shaft 59. On the shaft 63, on one side, there is a belt brake 64 and a Maltese cross 65, and on the other hand, the disk 66. On the disk 66, with the help of the axes 67, several pairs of cells are fixed again, each pair of ticks using a cam 68 (see Fig. 7), a lever 69 and a roller 70 are kinematically connected with the fist 60 and with the fist 71 fixedly mounted on the frame. The pliers 72 consists of a lever and sponges 73 (see Figures 3 and 8) attached to the head 74, which is adapted to rotate relative to the tongs 72. The feed slider 28 feeds through the connecting rod 75, the slide 76, the pull 77 and the eccentric shaft 11 connected with the feed crank 10, and the stroke of the slider 28 is adjusted by the screw 78 when moving the stone 79 to the groove of the bed 1 and in the groove of the scenes 76.

The proposed machine works as follows.

Drive 2 reports movement to flywheel 4. By turning on the clutch 5, the movement is transmitted to the drive shaft 3. From the drive shaft 3, through gears 6 and 8, the movement is connected to the drive shaft 7 of the slide, and from it is transmitted in three directions. The first direction is through the feed crank 10, the connecting rod 75, the eccentric shaft 11 / rocker 76, t 77 on the feed slider 28; the second one is through a fist 9 n the mechanism for controlling feed tongs; the third through gear 13 to the shaft 12 of the drive mechanism of the cut and then through the crank 15 of the cut, the connecting rod 54 to the slider 53, on which the sliding knife 52 is installed. From the shaft 12 of the drive of the cutting mechanism, the movement using bevel gears 14 and 17 is also transmitted to the intermediate shaft 16. From the intermediate shaft 16, the movement is transmitted in two directions.

The first direction is through bevel gears 19 and 21 onto shaft 20,

then through cylindrical gears 22 and 24 to hall 23 and further through cranks 25 and 26 with the help of levers of two knee-lever mechanisms on two sliders 43 and 43, which together with the tool 42 fixed on them of matrix 42 and punch 47 make reciprocating movement one to meet the other. The second direction is through bevel gears 18 and 56 to the crank shaft 55.

With crank shaft. 55 through 57 the Maltese cross and the Maltese cross 65 led the movement to the shaft 63 and the disk 66 rigidly mounted on the shaft 63. As a result, the disk 66 performs an intermittent rotation in one direction. On disk 66, several pairs of tongs are mounted, the castors of which can rotate about axis 67. In addition,

0 from the eccentric shaft E5, the movement is communicated through a crank 58 and t gu to the hollow shaft 59 and the fist 60, which, performing a reciprocating swinging motion together with the fist 71, fixedly mounted on the frame, through the roller 70, the lever 69 and the cam 68 controls mites 72 of the transfer mechanism, i.e. at a certain point in time opens or closes ticks.

0 A belt brake 64 mounted on the shaft 63 serves to dampen the inertial forces arising when the disk 66 is turned. The wire, trapezoidal or rectangular, is driven through the correct rollers 27

5 between the tongs 29, through floating wiring 35 until it stops with a diameter-forming roller 38.

When the actuator 2 and the electromagnetic clutch 5 are turned on, the slider 28 begins to move. When moving the slider to the right, the slider idles. In the right extreme position of the slide 28, the fist 9 rotates the lever through the lever-frame 32

5 34, on which the fist 30 is rigidly fixed, which, having turned, together with the lever 34, closes the tongs 29, i.e. pincers clamp the wire. Next, the slider 2.8 with tongs

0 29, moving to the left, curls the wire around the freely rotating mandrel 39. The diameter of the helix is set with the help of the diameter-forming roller 38, and the pitch is set with the help of the stop

five

40. In the leftmost position of the slider, the cam 30 is rotated with the aid of the lever 34, the arm-frame 32 and the cam 9, while the tongs 29 are opened and the slider 28 is moved to the right, making idle.

0

During the movement of the slider 28 to the right, the slider 53 of the cut along with the knife 52 secured to it, alternating with respect to the stationary blade

41, cuts the puck. At the end of the protle

Claims (3)

5 pieces of the washer are 62 pro-Lvao 7 shaft 59 with a fist 60, which through a roller lever 69 and cam 68 closes the tongs 72, the jaws 73 of which have sockets. The diameter of the nests is equal to the diameter of the washer. When closing the pincers, they grip and clamp the washer. In this case, the ledges of the sponges are between the turns of the washer. After this, the elements 57. and 65 of the Maltese cross are engaged and the disc 66 is rotated together with the tongs, which transfer the clamp to the next position where the punch and the die move one towards the other, the washer is finalized by pressing it around the ledges of the jaws 73. At the time of shaping, the head 74 can be turned in the direction of force, which prevents break pincers. After the process of shaping the washer is completed, the punch and the die disperse, the disk 66 rotates and the roller 70 encounters an elevation of the stationary cam 71, opens the glue through the lever 69 and the cam 68 and the fingers disengage and the washer leaves the machine. At the time when the washer is in the shaping position, winding occurs. And a segment of the next washer, etc. With such an implementation of the device, it is possible to double the productivity, since the transfer of the washer in the machine is carried out at half the speed, and almost all technological operations are carried out from the crank mechanisms, which are not very dynamic. Conducting the shaping process simultaneously on both sides allows the quality of the washers to be made to be made, so that the bends of the upper and lower ends of the washers go simultaneously with the same speed. The possibility of turning the head of the tongs in the direction of the force excludes the breakage of the shape of the fingers and the tongs. Absence, a fist in such basic operations as material feeding, cutting, is shaped 6 and also the refusal of a non-rigid kinematic connection between the shaping mechanism and other mechanisms significantly increases the reliability of the machine and increases the actual performance. Claim 1. Automatic machine for the manufacture of wavy spring washers, containing straightening and clamping wire feed mechanisms, winding mechanisms, cuts, shaping and transferring shire mounted on the bed, characterized in that in order to increase productivity, increase reliability and improve quality washers, the mechanism of washers transfer is made in the form of a disk mounted on an axis so that it can rotate in one direction by means of a Maltese mechanism with discs mounted on it using axes kih pairs mites interacting with two kulakami-, wherein one of the cams is mounted on the disk axis, to swing around it by the crank mechanism, and the other is fixedly mounted on the frame. 2. Automatic POP.1, characterized in that the mechanism for shaping the washers is made in the form of two sliders, one of which holds the punch and the other on the other. 3. The machine according to claim 1, characterized in that the mechanism for transferring the washers is installed with the possibility of being turned in the direction of the action of the punch of the shaping mechanism. Sources of information taken into account during the examination 1. Patent of Germany No. 884942, cl. 7d 37/04, 1953. 2. Patent of Germany No. 947064, cl. 7d 37/00, 1956. 3. USSR author's certificate No. 210819, cl. B 21 F 37/04, 1964. Yr W-NoSepHt / mo E- e poached 67. -sh -68 ///, It