FR2469993A1 - METHOD AND DEVICE FOR ASSEMBLING PREFABRICATED INDIVIDUAL PARTS OF CERAMIC MATERIAL - Google Patents

Abstract

METHOD AND DEVICE FOR ATTACHING INDIVIDUAL PARTS OF CERAMIC MATERIAL, FOR EXAMPLE HANDLES, ON BODIES OF CERAMIC MATERIAL, FOR EXAMPLE CUPS. THE INDIVIDUAL PART 22, PRESECHEED UNTIL THE CONSISTENCY OF LEATHER AND COVERED WITH A FILM OF WATER AT THE PLACES WHERE IT MUST BE FIXED, AND THE CORRESPONDING PLACES OF THE CERAMIC BODY 2 ARE OSCILLATED, BY A GENERATOR 26, TO CAUSE THE SOFTENING OF THE CORRESPONDING SURFACES, AND ARE UNITED BY SUPPORTING THEM AGAINST ANOTHER, BY COOPERATION OF A SUPPORT 23 AND AN OSCILLATING ROD 27.

Description

Method and device for assembling parts

  individual prefabricated in ceramic material.

The invention relates to a method and a device for implementing the method for assembling prefabricated individual parts, for example handles, buttons, made of ceramic material on bodies made of ceramic material, in particular cups, jugs,

pots, lids.

The assembly of individual prefabricated parts, such as handles, buttons, etc., of ceramic material on bodies, such as cups, jugs, pots, lids, of ceramic material, is done

manually or mechanically using assembly masses

lining or filling with different compositions.

  These masses are made up of mixtures, ranging from

the very viscous state in the pasty state, of ceramic materials

ques, clays, kaolins, ceramic varnishes, organic glues, such as dextrin, and preparations

of carboxymethylcellulose suspended in water.

  The assembly of the individual prefabricated parts takes place during the process of forming ceramic articles, during the drying phase and more precisely after the pre-drying, drying until the consistency of the

leather, and before white drying begins.

  After drying to the consistency of the leather, the individual pieces have a water content

between 14 and 20o.

  The assembly or filling process begins with the application of a layer of assembly material on the surface prepared by a prior treatment of the

prefabricated individual room to be fixed.

  The individual part thus prepared is assembled, manually-

ment or mechanically, at the places provided for assembly on the hollow body, and it is adhered by applying pressure. The resulting assembly material is removed using auxiliary means, such as a brush, sponge, etc. The disadvantage of this process lies in the fact that the adhesion of the individual piece attached depends on - the professional execution during manual assembly, - the quality of the composition and the suitability of the

assembly material.

  Other drawbacks of this process lie in: - the existence of three operational phases, namely the application of the assembly material, the application of pressure on the individual part, and the elimination of the material excess assembly, - and therefore the difficult implementation of this

process with a mechanical device.

  The invention provides a method and a device for implementing the method which make it possible to eliminate the drawbacks mentioned above and to implement the method in a simple manner with an assembly device or an automatically operating machine respectively. The safety of the process does not depend on the manual skill of the performer or the quality of the

  composition or suitability of the assembly material.

  It provides important security for grip and

  good arrangement of individual parts on bodies.

The method according to the invention makes it possible to bring together

an individual piece to a body by the action of oscilla-

tions by means of a direct transmission of the oscillations,

  without the need for assembly material.

  The principle is based on thixotropic phenomena

  appearing in ceramic masses in the plastic state.

According to these phenomena, the action of oscillations on ceramic masses results in agitation, vibrations and modifications of their ceramic-physical behavior. According to the method of the invention, the thixotropic effect is triggered on the surface of a selected place, activated in particular by the deposition of a film of water, of a dried ceramic body to the consistency of leather, by the 'action

oscillations. When the oscillations were transmitted-

  tions, the individual part to be fixed is placed and supported at the point in the body which must be assembled or "trimmed". The "creep" appearing on the surface of the places of contact of the two parts causes a bond

  intimate of these two parts - individual room and body.

  The oscillations are transmitted directly by means of a mechanical oscillation generator. No further processing is necessary

the place of assembly.

For example, on a cup body made of ceramic material having a water content of between 18 and 20%, it is desired to fix a handle of ceramic material having a water content of between 18 and 200%. The inner surface of the cup body is brought, manually or mechanically, onto a probe, and is pressed against this probe which oscillates at a frequency of at 200 Hz and with an amplitude i mm. After applying a film of water on the surface where the handle must be placed, the handle is pressed at the place of assembly of the cup, the connection between the body of the cup and the handle being effected by the thixotropy effect which is

caused by oscillations.

The present invention will be better understood using

  of the following description of a preferred embodiment

but not limiting for the implementation of the method, shown in the accompanying drawings in which: Figure 1 is a plan view of the device according to the invention

  Figure 2 is a sectional view of Figure 1, -

tour of 300; and

  FIG. 3 is a sectional view of FIG. 2.

2469993:

  At entry station 1, cups 2 are placed manually or mechanically on the receiving head

3, then pass, on the turntable 4 driven step by step

  step, by the cleaning station 5 and an empty station 6 to reach the assembly or packing station 7. In the cleaning station 5, the receiving head. 3 is driven in rotation by means of V-belts, by

  via grooved pulleys 8 for V-belt

zoldale and tree 9.

  Before the receiving head 3 with the cup 2 arrives in the assembly station 7, the roller 10 fixed on the lever 11 descends on the cam 12. The lever 11. is

mounted, so that it can rotate, on stud 13.

  The stud 13 is fixed on the rotary table 4, and the cam 12 and a rail 14 are fixed, so that

  turn, on the frame 16, via the upright 15.

The application of the rail 14 on the disc 17 rotates the latter until the roller 18, which is fixed to the lever II loaded by a spring 19, engages in the keyway 20. Therefore , the receiving head 3 having a groove 21 is stopped exactly and the

  assembly or packing process can begin.

  Before the assembly process, a handle 22 is placed in a support 23 then moved in the direction of the cup 2, by means of a straight guide 24. Shortly before pressing the handle 22 on the cup 2 , the assembly places are moistened with water by means of a pourer 25. At the same time as the handle 22 is brought towards the cup 2, a generator of oscillations 26, on which is fixed an oscillating rod 27, is moved

from bottom to top by a working cylinder 28.

The oscillating rod 27 is therefore introduced into the groove 21 and then pushed inwards, against the cup 2, by a working cylinder 29. the oscillating rod

  27 is in the form of a spring member.

At the same time as the handle 22 is pressed against the cup 2 by the support 23, the oscillating rod 27 is made to oscillate by the oscillation generator 26. As a result there is a softening (thixotropy) at the surfaces of contact of handle 22 and cup 2, and, because the support 23 presses on the handle

  22, an intimate connection between the cup 2 and the handle 22.

  Then, the support 23 is folded laterally and

returned to its original position.

  Ia oscillating rod 27 is removed from the inner wall of the cup 2, by the working cylinder 29, and exited from the groove 21, from below, by the working cylinder 28. Continuing to rotate the table

  rotating 4, cup 2 can then be removed, -manually-

  ment or mechanically, at exit station 30.

  As goes without saying and as it already follows from the above, the invention is in no way limited to that of its modes of application, no more than to those of the embodiments of its various parts, having have been more particularly envisaged; she

  on the contrary, embraces all its variants.

Claims (5)

1. Method for assembling prefabricated individual parts, for example handles, buttons, of ceramic material on bodies of ceramic material, in particular cups, jugs, pots, lids, characterized in that an individual part in ceramic material, pre-dried to the consistency of leather and covered with a film of water at the surfaces where it is to be assembled, and the places of assembly of the ceramic body are brought into a softened state, at their surfaces, by the action of directly transmitted oscillations, and are assembled   by pressing them together. -   2. Method according to claim 1, characterized in that the film of water is deposited on the places   body assembly in ceramic material. 3. Method according to claims 1 and 2,   characterized in that the oscillations are produced by an electromechanical oscillation generator and have a frequency between 50 and 200 Hz and an amplitude mm. 4. Method according to any one of the claims   1 to 3, characterized in that the oscillations are applied to the individual part and / or to the body in ceramic material.   5. Device for implementing the method according to any one of claims 1 to 4, comprising a turntable driven step by step, characterized in that a lever arm (11), provided with rollers (10; 18) and a spring (19), is fixed on the turntable (4) by l 'via a stud (13), that the roller (18) and a rail (14) rest on a disc (17) provided with a keyway (20) in the assembly station, that the roller (10) rests on a cam (12) in the cleaning station (5), that an oscillating rod (27) of elastic constitution is disposed on an oscillation generator (26) which can move vertically and horizontally , and that a pourer (25) and a receiving head (3) provided with a groove (21) are arranged above a support (23) for the individual piece.