FR2679483A1 - MIXING HEAD. - Google Patents

Abstract

Mixing head, the mixing chamber of which is connected by means of pilot valves to inlets for constituents of plastics, dye and / or the like, in the wall (2) of the mixing chamber (1), at the at least one guide groove (3, 3 ') opens in the region of the mixing chamber; in each guide groove (3, 3 ') can be inserted and moved a rod (4, 4') which carries the valves (V ', V ", V"', etc.) for the supply of the various constituents of plastic or dye material, at least one of the valve openings can be selectively oriented, by suitable displacement of the rod, towards the region of the open mixing chamber towards the groove.

Description

The present invention relates to a mixing head whose

  The mixing chamber is connected via pilot valves to arrivals for engine components.

  plastics, dyes and / or the like.

  In mixing chambers of the above kind, the arrivals are constituted by openings or nozzles which lead directly into the mixing chamber and are

  connected via pilot valves to

  Associated Transport Products The greater the number of constituents

  bring is large, the more difficult it is to distribute the

  on the outer side of the chamber, and all the more so as the dimensions of the chamber must be reduced to

  This has, on the one hand, the effect that the number of

  of connectable components is limited and that a relatively large number of components to be connected leads to a considerable expense in terms of construction.

  elsewhere, there are difficulties in terms of

  control and trouble for repairs.

  The object of the invention is to provide food

  plastic constituents and / or dyes of

  to avoid an accumulation of arrivals on the outer walls.

  The invention also aims to select in a particularly simple manner from among a number of substantially any of the components the combination desired respectively and to bring it to the desired temperature.

mixing chamber.

  This object is achieved by the fact that in the wall of the mixing chamber, at least one guide groove extends over the mixing chamber and opens therein

  in the region of the mixing chamber, that in each case

  a guide rod can be inserted and moved a rod which carries the valves for feeding the various constituents of plastic or dye, the arrival openings of the pilot valves are arranged on the side of the rod directed towards the inside the wall of the mixing chamber,

  and that at least one of the valve openings can be

  selectively, by appropriate displacement of the

  look out for the region of the open mixing chamber in

direction of the groove.

  According to other particular characteristics of

  According to the invention, the valves are arranged in groups of

  taping on the stick, in the manner of a store, that the

  valves engage with their anterior part in

  properly shaped wands and that the

  valences of the valves are flush with the peripheral surface

  of the stick, only in the wall of the chamber of

  two guide grooves are provided which communicate with the mixing chamber at two diametrically opposite locations thereof, that the side walls of the rods have projections or recesses which engage with

  recesses or complementary projections of the side walls

  grooves of the guide grooves, that the side walls of the rods are bulged outwards and that the grooves

  have a complementary curvature towards the interior

  the movement of chopsticks is ensured by one or more drive mechanisms, and that the mechanisms

  are coupled with a program control.

  The guide of the rod can be tangential-

  relative to the inner wall of the chamber of

  However, the underside of the wand may also

  present during the feeding process, the form

  rope passing through the mixing chamber.

  possibly provided lange can then be shaped or fully retractable from the chamber so that the

  movement of the rod and the feeding of the constituents of

  plastic are not impeded by the mixing screw.

  Particularly in the case where the rod carries valves with dye components, the openings of the valves can be placed close enough to each other so that several constituents can be introduced into the dyes.

  the mixing chamber from a single rod.

  The present invention offers the advantage that the supply

  constituents of plastics material is kept in

  of the peripheral field of the wall of the chamber of

  lax, without limitation of the geometrical data The control of the programs can be varied at will by the grouping of the valves and arrivals with one of the rods The supply of the plastic material is done by means of the rods

  whose implementation requires only a small amount of

  swimming grooves in the wall of the chamber

  tion and construction of the rods can then be done with such precision that no adverse influence or loss of pressure can occur during the feeding of the rods.

constituents of plastics.

  The description that follows, next to the drawings

  annexed by way of non-limiting examples, will

  understand how the invention can be put into practice.

  FIG. 1 represents a front view of a metal head

  langeuse according to an exemplary embodiment of the invention; FIG. 2 represents a side view of the object of

  Fig 1 along the section line II-II.

  The wall 2 of the mixing chamber 1 is provided with two grooves 3 and 3 'which extend perpendicularly to

  the axis of the mixing chamber In the grooves are inserted

  Movable rods 4 and 4 'are then displaceable. Rods 4 and 4' then have valves v ', v ",

  V "', etc. which, juxtaposed in the manner of a store, is

  with the lower part in recesses of

  The VO openings of the valves then open into the mixing chamber 1 if the rods are engaged in the open region of the mixing chamber so that the associated valve openings align with the opening of the mixing chamber which is extends in the tangential region of the wall of the mixing chamber with the bottom of the rods.

  The lower sides of the chopsticks with the openings

  Val valves can naturally also exceed

  mixing chamber 1, provided that there is sufficient

  room between the mixing screw M and the inner wall

  of the mixing chamber or that the mixing screw is removed

of said mixing chamber.

  As can be seen from FIG. 1, it is possible in the embodiment shown that, in addition to the valves

  v ', V ", V"' mounted in the manner of a store in the baskets

  spacecraft, valves VI and V 2 of traditional conformation cross the wall 2 of the chamber, that these valves Vi and V 2

  are arranged in such a way that they have two

  Offset rights of 900 offset from openings

  on the chopsticks In addition to the possibility of

  troduce two basic constituents through the intermediary

  valves VI and V 2, a third or fourth component

  additional components, for example also a dye component, can be fed through the chopsticks, which allows a flexible driving of the program with possibilities.

almost unlimited combination.

  FIG. 2 shows the shape and the dimensions of the groove and the rod. These dimensions are imposed first of all by the lower parts of the valves which are mounted in the rod for the control of the supply of the constituents of plastic material and / or of dyes in the

  fig 2, the corresponding elements bear the reference

  bent in fig 1 The side walls of the rods 4,

  4 'bulging outward engage in additional walls

  the guide grooves curved inwards.

  Such a conformation could also be replaced by

  a tongue and groove connection system.

Claims (8)

  1 Mixing head whose mixing chamber is connected via pilot valves to arrivals for constituents of plastics, dyes and / or the like, characterized in that in the wall < 2) of the mixing chamber (1), at least one guide groove (3, 3 ') extends over the mixing chamber and opens therein in the region of the mixing chamber, that in each guide groove <3, 3 '> can be inserted and 103 moved a rod <4, 4'> which carries the valves (V ', V',   V "', etc.) for feeding the various constituents of   plastic or dyestuff, that the arrival openings   (VO> pilot valves are arranged on the side of the   <4, 4 ') directed inward of the wall of the chamber.   mix and at least one of the valve openings   can be selectively oriented, by a suitable displacement.   of the rod to the mixing chamber region open towards the groove.   Mixing head according to claim 1, characterized   characterized in that the valves' V, Vy ', VI' ', etc.) are grouped in juxtaposition on the rod (4, 4', in the manner of a magazine.   Mixing head according to one of the claims   1 or 2, characterized in that the valves t V ', V ", V"', etc.) engage with their anterior part in suitably shaped bores of the rod <4, 4 '> and that the   Valve inlet openings are flush with the perimeter surface phérique of the baguette.   Mixing head according to one of the claims   characterized in that in the wall (2> of the mixing chamber (i) there are two guide grooves (3, 3 ') which communicate with the mixing chamber with two   diametrically opposite places of it.   Mixing head according to one of the claims   previous, characterized in that the side walls of the rods (4, 4 ') have projections or recesses which engage in complementary recesses or projections   side walls of the guide grooves (3, 3 ').   Mixing head according to claim 5, characterized   characterized in that the side walls of the rods (4, 4 ') are curved outwards and the guide grooves   (3, 3 <) have a complementary curvature towards the laughing.   Mixing head according to one of the claims   precedents, characterized in that the displacement of   gauges (4, 4 ') is provided by one or more drive mechanisms.   Mixing head according to claim 7, characterized   controlled in that the drive mechanisms are coupled with a program command.