SU1252047A1 - Apparatus for continuous shaping of articles of varying profile from powders - Google Patents

Description

2. The device according to claim 1, which is connected with the fact that the additional drives are connected to the control mechanism.

one

The invention relates to powder metallurgy, in particular, to devices for forming long articles from powder.

The purpose of the invention is to expand the technological capabilities of the device by allowing the molding of products such as rotation bodies.

Figure 1 shows the device a longitudinal section; figure 2 - A - forms of the obtained products.

The device consists of a base I on which the housing 2 is attached. Inside KOjfhyca there is a pressing body made in the form of a screw 3. The mouthpiece 4 is attached to the end, and the hopper 5 is attached to the top of the housing by means of a worm gear 6 and a screw 7 connected to driven (not shown).

The base 8 is fixedly fixed to the holder 8, the BHytpH of which the cup 9 is mounted for rotation. The glass has radial grooves 10 in which bearings P. are mounted with the possibility of radial displacement. A flat wheel 12 connected to a drive (not shown) is mounted on the glass 9. On the end surface of the 13 flat wheel, we have saiQii teeth. A worm gear 14 is rigidly mounted in the cage, rigidly connected to the staple. In the worm wheel, the tapered shaft 15 is fixed, the gears block 16 and the disk I7. The worm gear connects to the drive. The disk has a spiral groove 18, in the grooves of which the cams 19 are installed with the possibility of radial movement. In the cams on one side and in the bearings on the other there are rollers 20, which are in constant gear with cams on conical wheels 3. A device according to claim 1, characterized in that the bevel gears and the pinion shaft are mounted with the possibility of axial movement.

21. The conical wheels at one end are made in the form of spline sleeves 22, with which they form a silt joint shaft-gear 15.

The disk is provided with a gear-cutting internal engagement 23, which, by means of a gear 16, provides a cinematic connection with an internal gear 24, which is also mounted in the cage and connected to a drive that is connected to a control device (not shown).

The device works as follows.

The screw 3 receives a rotational movement from the drive through the screw wheel 6 and the screw to 7. The powder from the hopper 5 by screw 3 moves to the mouth of the mouthpiece 4, where it is pre-molded. The final molding is performed by the rollers 20 as they rotate around the longitudinal axis of the product and around their own axis.

The movement of the rollers is reported as follows. From the drive, a worm gear 14 and a cup 9 fixedly connected with it, as well as an internal gear wheel 24 and a disk 17, are received from the drive. The rollers 20 rotate around the longitudinal axis together with the cup 9 and disc 17, in which spiral cams attach cams 19 In the case of coincidence of the frequencies of rotation of the wheels 14 and 24 and the disk 17, the rotation of the block gear 16 around its own axis is absent. At the same time, the gear shaft 15, running along the fixed face-toothed gear surface 13, through the spline sleeves 22 and the bevel gear 2I transfer the rotation around its own axis to the rollers 20.

In order to create optimal molding conditions for obtaining products of various profiles, it is possible to change the rotational speed.

rollers 20 around its own axis. To do this, the flat wheel 12 receives rotation from the drive. When the direction of rotation of the wheels 1 and 14 coincides, the frequency of rotation of the shaft-gears 15 decreases, respectively, the frequency of rotation of the rollers 20 decreases. With equal frequencies of rotation of the wheels 12 and 14, the rotation of the shaft-gears 15 stops. Therefore, the rotation of the rollers 20 around its own axis is also stopped. In the case of the opposite direction of rotation of the wheels 12 and 14, the frequency of rotation of the shaft gears 15 increases due to which the frequency of rotation of the rollers 20 also increases.

To change the geometrical parameters of the obtained products, the possibility of radial movement of the rollers 20 is provided. For this, the control device changes the frequency of rotation of the internal gearing wheel 24 relative to the frequency of the worm gear 14 by means of an actuator. axle block gear 16.

The latter change the frequency of rotation of the I7 disk relative to the frequency

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rotation of the worm gear 14. Due to the frequency difference between the rotation of the disk 1 7 and the worm gear 14, the rotational movement of the disk 17 is converted into a translational movement of the cams 19 by means of the spiral groove 18, which, moving in the radial grooves of the worm gear 14, transmit the translational movement

rollers 20. Conical wheels 21 have the possibility of joint with rollers 20 radial movement due to the spline sleeves 22.

As a control device, a stepper motor can be used with a numerical control device, a cam mechanism, or any other mechanism that provides control of the wheels.

12.14 and 24 for a given program.

The application of the proposed device allows to automate the process of changeover from one size to another, which leads to an increase in the performance of the device (by reducing the changeover duration), it becomes possible to obtain products of the type

bodies of rotation with a variable profile and uniform density in diameter.

FIG. C

Compiled by G. Zagorsk Editor N. Bobkova Tehred L. Serdyukova Corrector M. Maksimishinets

Order 4565/12 Circulation 757 Subscription

VNIIPI USSR State Committee

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

Production and printing company, Uzhgorod, ul, Proektna, 4

Claims (3)

1. DEVICE FOR CONTINUOUS FORMING OF PRODUCTS OF A VARIABLE PROFILE OF POWDERS, comprising a housing, a loading hopper and an auger with a drive, characterized in that, in order to expand the technological capabilities of the device by providing the possibility of forming products such as bodies of revolution, it is equipped with rollers fixed from one end in bearings, and on the other - in cams, a glass with radial grooves for moving bearings, a worm wheel with a disc placed in it with a cut spiral groove for connecting to the cam with internal gearing gears, flat gear wheels and additional gears and worm gears, the cup being rigidly connected to the worm gear, the disk is kinematically connected to the gear ^J via gears, and the ropes are kinematically connected to the flat gear through the gear gears and bevel wheels forming a spline connection. SU.,., 1252047 Fig 1 2. The device according to claim 1, wherein the additional drives are connected to a control mechanism. 3. The device according to claim 1, characterized in that the bevel wheels and the pinion shaft are axially movable.