| US2551332A | 1951-05-01 | |||
| GB356099A | 1931-09-01 | |||
| US1660350A | 1928-02-28 | |||
| US4060938A | 1977-12-06 | |||
| FR2571645A1 | 1986-04-18 | |||
| US2968897A | 1961-01-24 |
| 1. | 1)Improvements to the straight machines in changeable edge for mitre bevel, bevel in its different gradation and flat edge working on the glass sheets or other hard materials with parallele faces which characteristic is that to contain the operating wheels and their* cooling system and to avoid the loss of cooling fluid or their spays is used a adequate shape container which swinging with the same wheels, does any angle from zero to ninety degree. |
| 2. | Improvements as ciaim N. 1 which characteristic is, in order to avoid the loss υ ϊ cooling fluid, the front closing of the wheels 0 container is did by the longitudinal bulkheads that are located either in the front part or in the back part, of the container, it is made mw ViIlth flexible material, for example, rubber or other similar once or wyii th a textile rolling, metallic, gummy or by a telescopic bulkheads, in bellow , in shutter or a mixed system. 5 3) Improvements as claim N 1 which characteristic is that either the front or' back longitudinal bulkhead working in the opposite syst r wi, ch means that, while the front bulkhead itself widening more its visible area as the wheels inclination go rom erc to niπe , degree trie back bulkhead comes inside the container, as long as it 20 will be not visible. |
| 3. | Improvements as claim N 1 which characteristic is that the longitudinal bulkhead to close the container can be fixed or in the upper spar or by the swinging container and pushed up. |
| 4. | Improvements which characteristic is that the polishing felt wheels 25 or other imbueing materials are weted by a mixture of Cerium Oxide only when the sheets are passing. b) Improvements as claim N. 4 which characteristic ι ^ that the mixture of Cerium Oxide is sent to the wheels, pulverized by a jet of compressed air so that the quantity of fluid is limited and as a ~Cι consequence it a±lo.*.' to generate heat that is necessary for a good polish . |
| 5. | Improvements which characteristic is that by a syncronized system with the rotation moviment of the swinging part, possible actioned by itself, the front spar trackholder goes up when the inclination angle of the swinging console lesses, to allow to the operating wheels to put themselves under the spar so that sheets of small dimention can be worked. Viceversa, always in proportion to the swinging console and wheels inclination degree, the front spar is in its lower position when the swinging console has reached ninety degree. 8) Improvements as claim N. 6 which characteristic is that the system syncronized or not among the vertical shifting of the frontspartrack and the rotation of the swinging console can be mechanical, electronic, hydraulic, by screw etc. 9) Improvements which characteristic is that a special mechanism arranges automatically and instantily to open t.ne front spar stopping the advancement system of the glass sheets to avoid serious damage.! to the members which keeps and go on the sheets, when, because of a mistake a sheets of more thickness than the machine arrangement is put, in the machine. 10) Improvements as II. 8 which characterise is t .* the automatical mechanism to open the front spartrack can be useα either mechanical or eletronic or by a dynamometric or other. |
Technical Field
Improvements to the straight machines in changeable edge for mitre bevel, bevel in its different gradation and flat edge working on the glass sheets or other hard materials with parallele faces.
Background Art
Bevelling machines for the glass sheets use containers with big rubber bellow bonnets to work in the differents angles and in the same time to cool the wheels without that the cooling fluid goes out. The bellow
' ') conformation and the rubber elasticity allo/vs the traverse of the swinging wheels console. Whatever is the bellow conformation, these bonnets always limit within a determinate angle, the wheels traverse and cause big problems because of the ace. iiulation oi grinding wheels ■ -esidual that putting down th<" j bellow cause considerable damages at
'.*5 the bonnets. disclosure of invention
This contrivance, as the following description, has resolved th s big problem eliminating the use of the bonnets and using a new type of container, it is fixed on the swinging console of the machine, it 0 makes possible either the containing of the wheels without any loss of fluid or the free traverse of the swinging console from zero to ninety degree.
Background art 5 On the machines equipped with felt wheels or other similar material about the Dolishing of ground another problem that people notice is that this kind of wheels to be used need to be impregnated by a mixture of a thiner abrasive, generally Cerium Oxide and water and to obtain a good polish it is necessary to generate heat during the
working .
Generally the system which has been using up todate to impregnate the wheels consists to send a jet of the above mentioned mixture directly on the felt wheels but this doesn't give a good result because the continuos jet of mixture on the wheels doesn't allow to generate heat, that is necessary for a good polish of ground, on the contrary the eventual limitation of the jet to help to generate heat will cause the stoppage of this nozzle. Disclosure of invention The drawback above mentioned has been obviated by a new system, it consists in the use of nozzles with a continuous j et,they nake possible that the mixti- ' -e runs, closed circuit, in the bottom of the container without touching the wheels, o- y when the glass sheets past on tne felt wheels a compressed air jet, running down the mixture flow di * er"s and pulverizes it n h ls, to make eε.sy the generation of heat caused by a pressure of the f<=ιt v.heel b against he glas*-- sheets and obtening the best polishing.
Besides, avoiding the stoppa^" and dibDf-rsi of the Ceπur, Oxide, which cost is very expensive, this syste-r, a±so reduces sensibly ltr use.
Disclosure of Invention
Another contrivance is a system with a syncronized interdependence among the swinging part and the spar of the front track holder, so that , when the wheexs on the swinging console are coming near the spar, this goes up to allow to the working wneels to put themselves under the track and to grind also the glass sheets with a limited height and with determinate degree.
When the swinging consol e with the wheels comes back to the vertical position of ninety d r , also the front spar cames back *o t e lowest position.
Disclosure of Invention
Other improvement consists in a safety automatically system when the workmen do a mistake or happen a broken to the system which regletes the thickness of the glass sheets to put m the machine, the pressure caused by the more thickness of the sheet pushes this mechanism, it frees immediately the spare of the front track-holder making possible the shifting outside, avoiding to do a considerable damage to the mechanical members of the machine.
Brief Description of drawings and best mode for carrying out the inventions.
The contrivances object of this invention ar*=- showed in t*->e enclosed drawings, only to exemplify and not to SP * a lint to realization, meaning that in the different drawings at thf- same number corresponds the same particular. Figure 1 skows a frontal straight machine to work mitre bevel, bevel in its different gradation and fla* " edge with arris υ r the glass sheets, it has been object of another undersigned's industrial patent. I n this figure we can noticed the swinging console l ar.c the ixed motors-spindles X and Y to grind and to polish the arris c ~ the flat edge working. The view B, figure 2 shows the swinging c nsole 1 which carry the different groups motor-spmdelb wheel, that driven by a reducer, screw and scroll 2, does a rotation from zero to ninety degree around the empty centre 4, doing as fulcrum point on a circular support 3. The numbers 5-6 represent schematically the front and back track that have the function of advancement and keeping of the glass sheets.
In the igure 3 view " is represented in sections the swinging console 1 , with the motor -spindle -wheel group " in the position of ninety degree mesured among the inside face of the two tracks 5-6 and the higher face of the wheels. The new system of container of the wheels 8 is showed in this drawing too. Thit> container fixed on the swinging console 1, for its conformation, makes possible the spraying on the
- A -
wheels 24 at any angle without loss of fluid or sprinkling but from the special draim 23 where also the working residual are send out. In this container the open higher part is closed for all its lenght by two thin plate like rubber 9 and 10. They make possible the rotation of all the swinging group at any angle, as exemplifily showed also in the view C in the figure 4, angle 45 degree and in the figure 5 angle 3 degree, keeping close the container without any loss of cooling fluid. In the figure 3-4-5 of the view C are represented the Cerium Oxide mixture jets 11 that contmuoly flows on the bottom of the container by a closed circuit system and the compressed air jets 12 that intervening only when the glass sheets pass on the wheels. The air compressed jets change the direction of the fluid of the Cerium Oxide mixture pulverizing it on the .heels. In the figure 6 view A a realization of an automatic syncronized in vertical moviment of the iront track 5 is repr sent. It is driven by ci sector gear 13 fixed ~>n thf s..ιngι ιg console 1 and it causes th~ rotati n of a double gear 14, a-so if connected with pinion and chain 15, causes t e rotation oi a car 16 assembled on a tie-rod 22, which connectes the opposit c .m and by its rotation caused the go up and go down of the sliding support 1" solid with the front track 5, always in the same determinate height Λfith relation to the gradation in which is the swinging group.
Other lmprovemet consists in a safety system set combined to the sliding support 17 where a lever mechanism 18 is pivoted on the chassis of the machine on the point 19 and have a supporting bearing 21 for the sliding support l".It is kept m the vertical normal position by ratchet with a round tip 20 which have a set spring that keeps it pressed and hammered into a adequate slot on the chassis of the machine. If happen an excessive pressure on the supporting bearing 21 because o+ the introduction of a glass sheet with a mere thickness than that th machine has been arranged it releases tne ractchet 2< " > and the mech r lsi 18 rotates outwarα causing the immediately widening
of the spar 5, stopping the advancement by a microswicth and avoiding very serious damages to the member which keeps and moves the glass sheets.
All the above described improvements can be realized also in different way and one can bring additions or changings within the capacity of the technical and no for this reason spreads further than this invention.