SU876489A1 - Device for powdering articles of body-of-revolution type - Google Patents

Description

(54) DEVICE FOR DETERMINATION OF PRODUCTS OF TYPE OF TELE BODIES

 I -, ..; The invention relates to equipment of the rubber industry and can be used to apply a uniform outer layer on articles such as rolling bodies. A device for dusting articles such as rolling bodies is known, comprising a dusting chamber with a sloping bottom, having a recess for collecting dusting material and flexible sealing curtains at the inlet and outlet openings and a screw feeder mounted above the loading window of the chamber, kinematically connected to a rotating impeller mounted in front of the inlet of the dusting chamber 1. But such a device is due to the fact that the material is fed by the feeder in a heap, without distributing it over the inclined surface of the bottom , does not provide uniform dusting, in particular, in the direction along the movement of the product on the dusting surface. It is also known a device for dusting articles such as rolling bodies, containing a dusting chamber with an inclined bottom, having a recess for collecting the spraying material, and flexible sealing lips at the inlet and outlet, and a screw feeder mounted above the loading window of the chamber, kinematically connected with a rotary impeller mounted in front of the inlet of the dusting chamber. In such a device, the bottom of the chamber is mounted with the possibility of reciprocating movement in parallel with the displacement of the product from the drive, made in the form of a crank-paddle mechanism, which is inextricably connected to the rotary impeller 2. In this device, the powdered material is scattered on the dusting surface of the bottom as it moves. but at the same time, its uniformity is not sufficient, which reduces the quality of dusting the product. The purpose of the invention is to increase the quality of dusting. This objective is achieved in that in a device comprising a dusting chamber with a sloping bottom having a recess for collecting the dusting material and flexible sealing curtains at the entrance. and an outlet orifice and a screw feeder mounted above the loading window, a kinematically connected with a rotary impeller mounted in front of the inlet opening of the dusting chamber, the bottom of the chamber mounted on an elastic element and equipped with a bottom-connected stent mounted on the bottom as it moves between the turning part impeller and groove to powder the material.

In order to allow the degree of dusting to be controlled along the length of the comb, guides are made at the bottom of the chamber, and the steps of the comb are installed with the possibility of reciprocating movement along the guides and are equipped with a device for fixing the combs in the working position.

FIG. 1 and 2 shows the device.

The device comprises a dusting chamber I with an inclined bottom 2, a recess 3 for collecting dusting material and sealing wipers 4 and 5, respectively, at the outlet and the inlet apertures. The dusting chamber 1 is loaded-. A conventional window 6, above which a bunker 7 with a screw feeder is installed. The auger 8 of the latter through an asterisk 9, a chain 10 and an asterisk, 11 is connected with a rotary impeller 12 installed in front of the inlet of the dusting chamber 1. The bottom 2 of the chamber has a shelf 13 for installing the powdered product bounded by walls 14. On the bottom 2 there is a hinge 15, around which the beam 16, which interacts with the adjusting screw 17, can rotate. The perforation 18 is made in the dusting surface of the bottom 2, under which a container 19 is installed to collect the pulp of dusting material. The bottom is mounted on an elastic element, for example, on the springs 20 and 21. Between the rotary impeller 12 and the recess 3 in the bottom 2 there is a step-like comb formed by steps 22 mounted for reciprocating movement. The guides 23 are made in the bottom relative to each other and fixing in a certain position with bandages 24.

The device works as follows. The steps 22 are pre-set at the required distance from each other, which is chosen, for example, by experiment, from the condition that the vibration resulting from rolling on the steps 22 of the powdered product causes the dusting surface of the bottom 2 to oscillate with the optimum movement of the dusting material on the surface Bottom 2 frequency. Steps. 22 move along the guides 23 and are fixed in a certain position with screws 24. Then the impregnated product is placed on the shelf 13, which, under the action of gravity, rolls down the inclined surface of the bottom 2, turning at the same time the rotation of the impeller 12 through the sprocket II, the chain 10 and the sprocket 9 are transmitted to the screw 8, which, turning, feeds a portion of the dusting material — through the window 6, the recess 3. Next, the powder to be powdered rolls onto the steps 22, causing the dusting surface of the bottom 2 to vibrate s periodic frequent impacts dusted article on all steps 22 and vibration due to bumps of the bottom 2 on springs 20 and 21. From the bottom vibration dusted .Material 2 moves along the inclined surface and is distributed uniformly dusted on po-, verhchosti bottom. In the process of interaction of the powdered product with the steps 22, the powdered product bends the flap

4 at the inlet of the dusting chamber 1, after the steps 22, enters the recess 3 with the dusting material and evenly dusts. Then, having a certain speed, the powdered product is tossed on the beam 16, like on a springboard, and, having hit the perforation 18, it rips the excess powder material that falls into the container 19 installed under the perforation. Then the powdered product bends the flexible curtain

5 at the outlet of the dusting chamber I and rolling out of the latter. The shutters 4 and 5, returning to their original position after passing the powdered product under them, seal the chamber 1.

The proposed device makes it possible to produce uniform dusting of products such as rolling bodies with the simplicity of the device design. The device allows changing the frequency of the steps, changing the frequency of vibration of the bottom of the dusting chamber along the length of the step comb, i.e., changing the intensity of dusting along the length of the comb, as well as establishing the necessary pattern for changing this frequency of vibration along the length of the step comb.

Claims (2)

1. A device for dusting articles such as rolling bodies, comprising a dusting chamber with an inclined bottom, having a recess for collecting powdered material, and flexible sealing cursors at the inlet and outlet openings and installed an artificially fed kinematically connected above the loading window of the chamber rotary impeller mounted in front of the inlet of the dusting chamber, characterized in that, in order to improve the quality of dusting. The bottom of the chamber is mounted on an elastic element and is provided with a step-like comb connected to the bottom, mounted along the movement of the product between the rotary impeller and the recess for the dusting material. 2. The device according to claim I, characterized in that, in order to allow the degree of opudrivann to be adjusted along the length of the comb, guides are made in the bottom of the chamber, and the steps of the comb 19 / S / 7 are installed (rig. 1 / / -1 t of linen with the possibility of reciprocating movement along guides and provided with a device for fixing the dies in the working position. Sources of information taken into account in the examination 1. USSR author's certificate number 611791, cl. In 29 N 21/06, 1977. 2. The author's certificate of the USSR according to the application No. 2756182 / 23-05, cl. In 29 N 21/06, 1979 (prototype). / 23 23 h 1 22 21