SU1316706A1 - Apparatus for applying quick-hardening glue - Google Patents

Abstract

The invention relates to a fluid spraying technique using a centrifugal method and can be used to apply a quick-hardening adhesive on the inner surfaces of cylindrical hollow parts. The goal is to expand technological capabilities, increase device performance and reliability of its work. For this, the body of the device for applying the quick-release glue is made with an axial channel communicated with the atmosphere and with the cavity of the working head having outlet openings and driving it to rotate. The device is also equipped with valves located in the channel of the housing. The removability of the working head makes it possible to prevent the quick-hardening adhesive from getting on the working surfaces of the device, thereby ensuring its uninterrupted reliable operation, minimizing the operating time of the operator with harmful potent solvents. And the connection of the internal cavity of the working head with the atmosphere by means of valves prevents the ingress of glue onto the part surface when the head is installed in the device case and when the rotational drive stops at the end of the working cycle, and also to ensure that the adhesive is thrown out of the working head holes when the rotational drive is activated the most reliable operation of the device when using viski. x rapidly hardening materials. 2 Il. with (L with O5

Description

to

The invention relates to a technique for removing liquids by a centrifugal method and can be used to apply a rapidly hardening adhesive on the inner surfaces of cylindrical hollow parts, in particular, on microelectric motor housings during their automatic assembly in serial and mass production.

The purpose of the invention is the expansion of technological capabilities, improving the performance of the device and the reliability of its work.

FIG. 1 shows the device, a general view; in fig. 2 is a section A-A in FIG. one.

The device for applying quick-release is 15 hardened, its glue comprises body 1, a hollow working removable head 2, installed in the cavity of body 1, and drive 3 of the head 2. Body 1 is connected to shaft 4 of rotation 3 by means of shaft 5 connected with clutch 6 and installed on the sub. Hippica 7 in the housing 1.

The head 2 is held in the housing with a rubber ring 8. of the rubber ring serving simultaneously as a hermetic seal. The inner cavity 9 of the working 1 tin 2 is made conical to facilitate the swelling of glue from the upper walls downwards and is connected to the hole 10 by the axial channel I. The body also has a drop of 12 connected to the atmosphere and to the cavity 9 of the working g (), skirt 2 In the duct 12, a valve 13 is installed, which is pressed by the spring 14 to the box 15, and an armature valve 16 pressed against the edges of the hole 10 by the spring 17, the other end of which abuts the plug

20

25

thirty

2, the glue is pre-poured, then it is installed in the cavity of the housing 1 and fixed by the ring 8. At the same time, in order to avoid the extrusion (glue) of the glue from the holes 20, when installing the head 2 by compressing the air in the cavity of the housing 1 which, acting on the ball of the second valve 16 with its other end, diverts it from the seat and connects the internal cavity of the head 9 through the axial channel I and the holes 10 and 19 to the atmosphere, allowing the air displaced by the head 2 to be free about going out.

After installing the working head 2, the effect on the valve 13 is stopped and it, together with the ball valve 16, cuts off the internal cavity 9 of the head 2 from the atmosphere. At this moment, the glue does not flow out of the holes 20, since their diameter is chosen so that, at a given viscosity, in the absence of rotation, the glue does not leak out. After that, the working head 2 is rapidly lowered vertically downwards by means of a reciprocating shifting drive (not provided) and is introduced into the part 21, on the middle part of which internal cylindrical surface (in height) it is necessary to apply glue. The distance that the head 2 is lowered is monitored by a sensor (not shown). After insertion of the head 2 into the part 21, the actuator 4 is turned on, which begins to seep out the head 2, while the slowed down of the head 2 continues (switching to another operating mode of the reciprocating actuator 18 with a hole 19 associated with the atmospheric movement) Roy. In the lower part of the head, two holes 20 are made to exit the sprayed glue, arranged at an angle of 30 to facilitate the exit of the glue under the action of centrifugal forces and having a diameter of 1 mm. The diameter of the holes 20 is selected so that 40 of the holes 20 and the valve 16 is placed on the internal circuit by the action of centrifugal forces, the valve ball 16 opens, connecting the internal cavity of the head 9 with the atmosphere. and the glue is ejected from the head 2 through

so that with the viscosity of the glue and the absence of vrav1eni head 2 glue flowed out of the holes 20.

The head 2 is mounted with the possibility of reciprocating movement, for example, by means of a pneumatic actuator, an electric drive (not shown) with different operating modes for accelerated and slowed down of 1 tin into the part 21, on

45

the lindrical surface of the part 21. After a part of the inner cylindrical surface of the part is required to be coated with epoxy glue (the distance that the head goes down vertically, the sensor is also monitored, which gives signals to the actuators), the rotational drive 4 is turned off, the head 2 is stopped and removed from part 20. As the valves

the inner surface of which is applied - Q 13 and 16 again close the connection of the internal cavity 9 of the head 2 with the atmosphere,

no glue is allowed on the surface

details 21.

with adhesives.

The inner cavity 9 of the head 2 has in its upper part L-shaped protrusions 22 so that the glue does not flow into the axial channel 11 during operation. The rotation actuator 3 is fixed to the housing 1 by means of a rack 23. The device operates as follows. In the internal cavity 9 of the working portion of the glue poured into the cavity 9 of the head 2, there is usually enough to cover 60-75 cases of microelectromotor motors with glue (application time to one body is 15 seconds). After using this portion of glue

o

five

0

five

0

2, the glue is pre-poured, then it is installed in the cavity of the housing 1 and fixed by the ring 8. At the same time, in order to avoid the extrusion (glue) of the glue from the holes 20, when installing the head 2 by compressing air in the cavity of the housing 1, the protruding rod of the check valve 13 is pressed which, acting on the ball of the second valve 16 with its other end, diverts it from the seat and connects the internal cavity of the head 9 through the axial channel I and the holes 10 and 19 to the atmosphere, allowing the air displaced by the head 2 to be free about going out.

After installing the working head 2, the effect on the valve 13 is stopped and it, together with the ball valve 16, cuts off the internal cavity 9 of the head 2 from the atmosphere. At this moment, the glue does not flow out of the holes 20, since their diameter is chosen so that, at a given viscosity, in the absence of rotation, the glue does not leak out. After that, the working head 2 is rapidly lowered vertically downwards by means of a reciprocating shifting drive (not provided) and is introduced into the part 21, on the middle part of which internal cylindrical surface (in height) it is necessary to apply glue. The distance that the head 2 is lowered is monitored by a sensor (not shown). After inserting the head 2 into the part 21, the actuator 4 is turned on, which begins to wrap the head 2, while the head 2 is slowly lowered (switching to another mode of operation of the reciprocating drive) orifice 20 and the valve ball 16 opens, connecting the internal cavity of the head 9 with the atmosphere. and the glue is ejected from the head 2 through

movement) holes 20 and lies on the inner chi

the lindrical surface of the part 21. After a part of the inner cylindrical surface of the part is required to be coated with epoxy glue (the distance that the head goes down vertically, the sensor is also monitored, which gives signals to the actuators), the rotational drive 4 is turned off, the head 2 is stopped and removed from part 20. As the valves

Portions of glue poured into cavity 9 of head 2 are usually enough to cover 60-75 cases of microelectrodvigate with glue (application time to one body is 15 s). After using this portion of glue

The head is removed and washed in a solvent, and a friend with a new batch of glue is inserted in its place.

Thus, the invention improves the reliability of the device when using viscous, rapidly hardening materials, providing selective application of glue to the internal hollow surfaces of cylindrical parts of small diameter, minimizing the operator’s time with harmful health solvents and increasing device productivity by eliminating wasteful time. washing the working mechanisms of the device with solvents.

Claims (1)

Apparatus of the Invention A device for applying a quick-hardening one, comprising a body, a hollow working head with outlet openings and a drive for its rotation, characterized in that, in order to expand the technological possibilities, device performance and reliability of its work, the body is made with a channel communicated with the atmosphere and with the cavity of the working head, while the device is equipped with valves placed in the channel of the body. Gz Phi5.1 A-A Compiled by .L. Chal-Boryu Editor M. DylynTehred I. VeresKorrektor A. Tsko Order 2381/7 Circulation 645Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk iab., 4/5 Production and Printing Enterprise, Uzhgorod, ul. Project, 4