FR2683178A1 - PROCESS FOR MANUFACTURING POLYURETHANE BOOTS AND DEVICE FOR IMPLEMENTING THE METHOD. - Google Patents

Abstract

Method and device for manufacturing polyurethane boots. For the molding of an upper with a mounting sole and an outsole overmolded on said mounting sole, there is provided a form (7), two mold holders (4, 5) each with a lateral mold element (4a, 5a) and a bottom punch housing (18) equipped with a bottom punch (28) provided with an engraving, and can be applied alternately with a displacer housing (12) carrying a displacement plate ( 15) with a displacer, against the end surface (14) on the sole side of the close mold holders (4, 5). After applying the displacer housing (12) against the end surface (14) on the flange side, the bottom punch housing (18) is applied, against the rear face of the displacer housing (12) and, after replacing the housing of the displacer (12) and the bottom punch housing (18), a midsole is molded between the outsole and the mounting sole.

Description

Method of manufacturing polyurethane boots and device for

  The invention relates to a method of manufacturing polyurethane boots by means of a mold comprising a shape, two lateral mold elements which enclose said shape and can be pushed apart and brought together in a plane of

  separation of the mold and maintained respectively by a holder

  mold, and two shutter elements that can be applied alternately with their lateral mold members against

  the end surface of the sole side of the mould-

  for the alternative construction of a mounting flange

  and an outsole in the form of a displacement plate

  cement for the realization of the mounting plate, held by a displacer housing and provided with a displacer, and an engraved bottom punch for producing the sole

  of wear maintained by a bottom punch housing, a quantity

  polyurethane material having predetermined properties each time being injected first in the space for the rod and the mounting flange delimited by the shape, the

  lateral mold elements and the displacer, through

  of a carrot channel in the displacer housing first applied against the mold carriers and the side mold members and in its displacer, and then by a carrot channel in the bottom punch housing inserted between -time and its bottom punch, in the bounded space

  between the latter and the aforementioned mounting flange.

  The invention also relates to a device for

implementation of this method.

  The aforementioned method as well as suitable devices for the implementation of said method have long been part of the state of the art and have already led the applicant during the years 1972 to 1975 to build,

  under the designations Desma 507-6 and Desma 547-6, the two ma-

  China injection molding polyurethane boots that

  operate according to different principles and have been

  both to various customers and which were also brought to the attention of the interested public during the "Internationale Mode und Schuhmesse 1979" in Pirmasens. The Desma 507-6 then operated with a shape placed in a horizontal plane, the tip of which the boot was directed towards

  down and that could be restrained or released by two

  articulated molds at the end of the opposite shape to the

  on a common axis oriented in the vertical direction and

  each one a lateral mold element, by means of respecti-

  a hydraulic piston-cylinder system and corresponding attachment points on each mold carrier and on the table

  rotating frame mounted on a solid machine frame, which

  The devices described here and five other such devices were at regular angular distances. At the sole end, each mold carrier was provided with a fixation for an axis arranged parallel to its end surface on the oriented sole side. in the vertical direction

  and at a suitable distance from said terminal surface,

  which axis carried a displacer or bottom punch housing which could pivot about said axis, to be tilted, by means of a hydraulic piston-cylinder system mounted on the

  associated mold carrier and an adhesively coupled oscillating lever

  with the said system, in a position in which it

  completely liberated the space delimited by the projection

  tical surface of the end surface on the sole side

  molds close together with their side mold elements in

  before this end surface, or brought into abutment against

  common terminal surface. The housing of a displac-

  was then, in its surface intended for application against the common terminal surface, a displacement plate with a displacer which, in the closed state of the form, the mold holders with their lateral mold elements and the housing of said displacer and in conjunction with the sole region of the shape, limited space for making a mounting flange, while the bottom punch housing bore on its corresponding side a bottom punch with an engraving

  which, after the realization of the stem and sole of

  and subsequent replacement of the mover housing by the bottom punch housing, with regard to the application

  against the above-mentioned common terminal surface, created, in com-

  pairing with the sole region of the form henceforth

  covered by a mounting base, a space for reali-

sation of an outsole.

  The manufacture of a boot was made of such

  way that in a position of the turntable in the-

  which no reaction unit and injection molding

  placed before the device in question here, the

  It was opened by folding the bottom punch housing previously applied against the common end surface on the sole side of the close-fitting portmolds with their side mold elements, the end surface and opening the

  mold holders with their side mold elements to the

  scissors, the boot made during the working cycle

  Previous and now accessible story was removed from the form by hand or by means of an automatic manipulator,

  all parts of the mold were cleaned and sprayed

  with a release agent, and a new sock made of a suitable fabric and to be integrated as a liner in the next boot was manually fitted onto the shape. Then, the mold carriers with their side mold elements were brought closer together again, the housing of

  the displacer was brought into contact with the terminal surface

  one of the mold holders with their lateral mold elements,

  and the turntable was brought into a position in the-

  which a first unit of reaction and injection molding

  was placed in front of the device in question, so as to allow for the production of a mounting plate and

  of a rod, by rectilinear movement towards the

  the filling of the mold in question with a predetermined quantity of a first polyurethane mixture having suitable properties, via a

  carrot in the aforementioned displacer housing After the reaction

  polyurethane, the unit of reaction and

  injection was removed, the displacer housing was folded from the common end surface, sole side,

  close-up mold carriers with their side mold elements

  the bottom punch housing was brought into contact with said end surface, and the device under consideration was moved, by means of a suitable movement of the turntable, to a position in which a second reaction unit and molding unit injection was able, after rectilinear movement towards the device, to fill

  the mold now available for the realization of a

  of wear with a predetermined amount of a second material

  polyurethane mixture having adequate properties via a core channel provided in the housing

  After the complete reaction of this polyurethane

  thane too, the turntable has been moved so that

  the device under consideration was again placed in a

  corresponding to the extraction station described above

  to start another work cycle.

  The Desma 547-6 differed from the aforementioned Desma model

  507-6 in that the six devices mounted on a rotary table

  each of a suitable construction each had a form mounted upright in a vertical plane, the tip of the boot of which was directed towards the turntable, and which could be closed or released by two mold carriers with their side mold members arranged symmetrically with respect to their plane of separation in frames with horizontal carrying rails and each movable by means of

  of a hydraulic piston-cylinder system The housing of de-

  placer on the one hand and the bottom punch slot on the other

  were mounted side by side on a sliding table de-

  movable below the form, each of the aforementioned housing being equipped with a particular drive mechanism oriented

  vertically in the form of a piston-cylinder system

  with the aid of which it could be applied, after a corresponding movement of the sliding table, against the end surface on the sole side of the close-up mold carriers with their lateral mold elements With this arrangement, the

  manufacture of a boot could be done by steps cor-

  As in the case of the Desma 507-6 described above In order to facilitate the fit of the sock on the shape and the removal of the completed boot from it, the device in question furthermore included a tilting of known type installed on the head side, by means of which the shape could be pivoted about an axis placed perpendicularly to the plane of separation, so that, in an extraction station, the foot element of the form

  was directed to the operator of the molding machine by

  Eject. However, the implementation of the process presented

  in all cases the great disadvantage that the objective proper-

  of this process, that is to say to manufacture from a machine

  as simple and economical as possible a boot whose stem and mounting sole were on the one hand much lighter and on the other hand had much better thermal insulation properties, unlike those made from massive elastic materials such as thermoplastics or rubber, the mounting flange to be connected to an elastic but strong and wear-resistant outsole could not be reached,

  by force of circumstances, that at the cost of substantial defects,

  litative compared to well-known type boots and also

  compared to those made of thermoplastic or rubber

  Injection molded rubber To begin with, in the interest of a desirable maximum reduction in the length of all the necessary core channels, the method described above first required the realization of the mounting flange and the rod. and then manufacturing the outsole, to avoid air pockets having a negative effect on the

  quality, the realization of the stem and the sole of

  for this stage only allowing the use of a single core channel located at a point as low as possible of the mold, for example at the tip of the boot facing downwards in the case of a shape in position lying down or at the heel in the case of a standing form; moreover, it involved during the filling and the complete reaction of the polyurethane mixture, the authorization inside the mold of an internal pressure higher than the atmospheric pressure

  to allow the polyurethane to travel and foam uniformly

  up to the upper edge of the boot.

  However, the necessary effect was that the polyurethane

  thane introduced into the mold could not fully foam and it only reached a reduced foam structure, which diminished all the advantage in terms of weight and

  its insulating properties This effect nevertheless always occurs

  days in the manufacture of polyurethane boots and must be accepted, a proper conduct of the process nevertheless allowing to achieve considerable weight savings

  and to obtain clear improvements in the properties of isolates

  compared to similar boots made

  from massive elastic materials.

  For the realization of the outsole, however, it was necessary during the next step, to admit during the filling and the complete reaction of the quantity

  corresponding polyurethane in the mold provided for this purpose.

  fet, that is to say in the space delimited by the engraving of the bottom punch placed in the bottom punch housing and

  the mounting plate made beforehand, a pressure in-

  much higher than for the realization of the

  rod and mounting flange, in order to achieve for the se-

  a compactness that meets the requirements of

  lidity and wear resistance formulated with regard to the

  outsole However, this internal pressure

  then, although in reduced proportions the

  formerly built assembly with its structure expanded uncontrollably and pushed in part in the region of the mold occupied by the rod already formed, so that it was impossible with the method considered to achieve a boot having a transition zone defined unequivocally between the mounting and wear soles and thus also the unambiguous characteristics of the boot in this transition zone.

  Then, to avoid these difficulties, we have

  on the one hand, to make wear soles with a considerably lower internal mold pressure than during manufacture of the rod and the mounting flange, which

  necessarily led to wear soles with a structure

  very porous and low strength and abrasion resistance accordingly and therefore a considerable restriction of boots applications; and secondly to place in

  adequate bottom punches, before manufacturing the se-

  wear, a wear outsole prefabricated in a ma-

  appropriate material, eg compact polyurethane,

  thermoplastic or rubber, thereby reducing the

  of the outsole to the production of an insole.

  polyurethane intermediate with a foam structure

  which links the prefabricated outsole to the mounting base, which certainly

  desirable to give the entire sole the elasticity

  predetermined comfort and comfort, but did not insure, because of

  the porosity of the midsole, the qualitative links

  between the three sole layers only for selected combinations of rod materials, mounting flange, prefabricated outsole and

porous midsole.

  The object of the present invention is therefore to indicate a process for the manufacture of polyurethane boots and a

  device for carrying out said method with the aid of

  the above-mentioned disadvantages can be avoided and which makes it possible in a simple and economical way to manufacture polyurethane boots which comprise both a light rod with very good thermal insulation qualities and a mounting plate made of the same material as a strong and abrasion-resistant outsole, an extra

  minimum of instrumental and technological

  in addition, to meet the requirements set out in the foregoing that the part of the boot to be made last should be the one whose material has the most

great porosity.

  According to the invention, this object is achieved by the fact

  that as soon as the rod and sole of

  a space for the realization of the wearing surface area of the outsole delimited simultaneously in another separate mold cavity formed between the displacer housing and the bottom punch housing is filled by

  through an additional carrot channel, poly-

  urethane having the predetermined properties, and that the

  the aforementioned consecutive manufacture of the outsole is

  to achieve a midsole area of the outsole which connects the mounting flange to the area

  wear surface of the outsole.

  It is therefore particularly advantageous that, as soon as the rod and the mounting flange are made, a space

  for the realization of the wear surface area of the se-

  wear wheel delimited simultaneously in another separate mold cavity formed between the locator housing and the bottom punch housing, is filled, via

  of an additional carrot channel, polyurethane

  both the predetermined properties and the aforementioned consequent manufacture of the outsole is reduced to the realization of a midsole area of the outsole which connects the mounting flange to the wear surface area of the midsole. outsole, because it is thus possible to achieve, in a continuous temporal continuity, both a rod with a mounting sole of a light material whose foam structure is certainly reduced but sufficient and which has very good thermal insulation qualities, an almost compact outsole with good durability

  and high resistance to abrasion, which are

  linked together, in a direct temporal continuity, by a midsole of a highly porous structure

  the realization of which requires only a small amount of pressure

  in the mold under consideration, the affinity of the materials used and the choice of the times required for the reaction.

  the different parts of the boot,

  to achieve a link between the different zones which satisfies the most stringent requirements with regard to resistance and transitions from one zone to another, and to make, by means of the adequate the midsole area, an outsole having

  good qualities of elasticity and comfort In addition, the manufacturer

  separate cation of the outsole areas allows, before their realization, advantageously equip the corresponding mold of a prefabricated insert which may consist of a wear surface layer, particularly thin, made of an elastic material with predetermined properties or one or more pieces (x) of an elastic material having predetermined properties, each piece being smaller than the total area of the soleplate, or additionally or alone of one or more piece (s) of sheet metal of a suitable composition and thickness, which offers the possibility of embedding on the one hand this insert in a polyurethane outsole area so that this zone can then be connected without difficulty and with the necessary strength to the porous midsole area, and to extend on the other hand the variation of the boots to be made to those which must satisfy very special requirements

  with regard to the wear layer or to different requirements

  the different layers of insoles or, for work boots,

  protection, for example in the mining industry.

  To meet this last requirement, it is advantageous to also equip the space for the manufacture of the rod, before the production thereof and at least in the region of the top of the foot, of an insert consisting of a or a plurality of pieces of sheet metal of a suitable composition and thickness, said insert then being embedded in the material of the rod which has a reduced foam structure and can then be connected in turn without difficulty, with the necessary strength, to the porous midsole area, which results in the manufacture of a safety boot for work in hazardous areas

  which meets all the requirements.

  Moreover, with regard to the implementation of the aforementioned variants of the process, a particular advantage is obtained if, on the one hand, the respective quantities of poly-

  urethane, each having predetermined properties

  for the realization of a boot are fixed in such a way that

  that the rod and the mounting flange have, after molding, a reduced foam structure, while the midsole area has a porous foam structure and that the structure of the midsole area is in a

  large compact size, which has the effect of

  Days the most favored method sought for molding in

  the last part of the boot that requires the pressure

  the weakest inside the mold, and if, on the other hand,

  on the other hand, a sock made of a suitable and

  as a liner in the next boot to be manufactured is mounted on the shape before the realization of the rod and the mounting flange, because this measurement results in a

  especially great wearing comfort for boots made

  cated. For the implementation of the aforementioned variants of the process for manufacturing polyurethane boots, a particular advantage consists in using a device in which the displacer housing on the one hand and the bottom punch housing on the other hand are provided with of drive elements that, in addition to the alternative application of these two housing

  against the end surface on the sole side of the mold holders

  with their lateral mold elements, may provoke

  simultaneously applying the displacer housing against said sole end surface and applying the bottom punch housing against the surface of the displacer housing opposite said sole end surface; and it is also advantageous that the displacer housing bears on the opposite side to said end surface on the sole side, in the state of its application against this end surface,

  another displacement plate provided with an additional displacer

  which, together with the engraving in the punch of the bottom, delimits, in the aforementioned state of simultaneous application of the displacer housing and the bottom punch housing, a separate space for producing a surface area

  of the outsole, which is supplied with polyurethane

  thane with appropriate properties through a special carrot channel, because it is thus possible to overcome the above-mentioned difficulties in a

  amazing using at most in the neon device

  require an additional drive element with respect to the aforementioned state of the art, and that for the rest, it

  simply modify the arrangement and order of the said ele-

  drive and insert an additional displacement plate into the unused side of the aforementioned displacer housing which, when applying the housing of

  mover against the end surface on the insole side of

  molds with their lateral mold elements, is opposite to said end surface, to multiply

  possibilities of variation of the device in question by

  the state of the art with regard to the

  of the most diverse shapes and types of boots in poly-

  urethane it allows to manufacture, in accordance with the presentation

  above, apart from the considerable increase in the

the boots in question.

  A very advantageous embodiment of a device

  of this kind is characterized in that the housing

  the bottom punch housing is adhesively coupled to at least one drive element by which said bottom punch housing can be moved from a position in which its surface carrying the bottom punch is snugly positioned in front of the end surface on the sole side of the mold holders

  close together with their lateral mold elements, perpendicular

  stretching at said end surface on the sole side, in both possible directions, and that the displacer housing is

  adhesively coupled with at least one

  trapping by which said displacer housing can be

  displaced from a position in which its surface

  both the displacement plate for demolding the sole

  of mounting is arranged parallel to said end surface

  in at least two opposite directions, with at least one additional drive element by which it can be displaced from the same position in two opposite directions perpendicular to said end surface on the sole side, drive members being controllable and arranged so that when the distance between the aforementioned sole end surface and the surface of the bottom punch housing carrying the bottom punch is sufficient, the displacer housing can be engaged without difficulty in the gap thus created and applied against said end surface on the sole side, and removed again in the reverse order, because in this case it is sufficient, contrary to the state of the art, to ensure that the two housings which, initially, could only perform a translation movement with respect to the end surface on the side of the door -molds with

  their side mold elements and therefore be applied that al-

  ternatively against the said end surface, be in conformity

  in such a way that they can also be moved relative to one another and at varying distances from said end surface, which clearly minimizes the additional expense in terms of construction with respect to

  the state of the art, and therefore also the extra costs.

  This last effect has particular repercussions

  advantageous when the above-mentioned embodiment of the

  is further completed so that, on the one hand, the

  the bottom punch can only be moved

  perpendicularly to the end surface of the mussel holders close together with their side mold members, and that the mover housing equipped with at least one element

  for moving in the perpendicular direction

  to said end surface on the sole side, forms an upstanding and downwardly extending construction which is mounted on a sliding table with predetermined fixing points and is movable parallel to said

  end surface on the insole side avoiding the housing of

  background, including at least one drive element, and clearing the bottom punch housing without hindrance

  when said bottom punch housing is at a distance

  sufficient of said end surface on the sole side, and

  that, on the other hand, the end surface of the

  close molds with their side mold elements constitutes a horizontal surface, and movements of the displacer and bottom

  below the horizontal plane defined by the horizontal surface

  because, in particular, it makes it possible to overcome in a particularly simple way the difficulties of guiding

  and adapted support, in particular accommodation for

  and this apart from the fact that all modes of

  realization offer the considerable advantage that separations

  Molding can always be done in the direc-

  perpendicular to the end surface on the sole side of the close-up mold carriers with their lateral mold elements,

  which largely prevents, especially after the

  the thicker outsole, the action of shear forces on this sole at the time of opening of the

  mold and therefore the risk of damage.

  Particular advantages are also provided by an embodiment of the device according to the invention wherein the displacer housing is adhesively coupled with at least one drive member through which said displacer housing is fed from a position. in which it releases in any case completely the space for the application

  defined in front of the terminal surface

  by the vertical projection of said end surface on the sole side of the mold carriers close together with their lateral mold elements, by a rocking movement about an axis arranged parallel to said end surface on the sole side

  and at a suitable distance from it, in contact with the-

  said end surface on the insole side and vice versa, and wherein the bottom punch housing is adhesively coupled with at least one driving element capable of bringing it, by means of a rocking movement about another axis of the aforementioned type, from a position in which it also completely releases the space for the application of the housing in front of the end surface on the insole side,

  contact with said end surface on the insole side and reverse

  that at least one other training element

  the aforesaid axis for the tilting movement of the bottom punch housing can be moved relative to said end surface on the sole side so that said bottom punch housing can be applied directly on the one hand directly against said end surface on the sole side and, on the other hand, against the surface of the mover housing carrying the plate

  additional movement when it has already been

  plicated against said end surface on the insole side, since this certainly requires

  state of the art, an additional training element

  but in return ensures the ease of implementation

* works in that the rocking movements can always

  days be set so that all elements of the mold

  always offer free access for cleaning and spraying.

  demoulding agent between the removal of a finished boot and the installation of a new sock

  Moreover, this embodiment is particularly advantageous.

  where the arrangements in question are to be adapted to the

  of a maximum height imposed on the place of implanta-

tion.

  The aforementioned embodiment can still be improved.

  advantageously in the sense that at least the element of

  single motion for the movement of the axis for the movement

  tilting of the bottom punch housing moves said axis so as to cause, in any case in the close state of

  mold carriers with their side mold elements, a movement

  translationally perpendicular to the end surface on the sole side of the mold carriers close together with their lateral mold members in one of two possible directions, the aforementioned bottom punch housing still stopping

  side of the plane defined by the end surface on the insole side op-

  posed to form since on the one hand this allows the

  construction of an arrangement particularly for the

  the axis for the rocking motion of the bottom punch housing and that, on the other hand, the implementation of this embodiment also makes it possible to open the mold for the removal of the completed boot in such a way that that the thicker outsole is not subject to the action of shear forces which could otherwise cause

damage to it.

  Advantageous embodiments are also

  obtained by the fact that the axes for

  housing lugs are oriented parallel to two opposite faces of the end surface on the sole side of the mold carriers close together with their lateral mold elements; that the axes

  for tilting movements of dwellings are oriented

  the separation plan of the mussel holders with their

  lateral mold elements; and that the axes for the movements

  tilting units are associated with and associated with a portemoule each time, since this

  measure allows optimal adaptation of

  necessary for special requirements, in particular local conditions, as regards the cooperation between the displacer and bottom punch housings on the one hand and the mold holders with their lateral mold elements,

on the other hand.

  A particular advantage is obtained with an embodiment in which at least one driving element for the rocking movement of the displacer housing is fixed

  on one of the mold holders, and at least one training element

  for the movement of the axis for the rocking movement

  the bottom punch housing is mounted on the other door-

  mold, the latter driving element comprising in turn a transport element which carries both the axis for the tilting movement of the bottom punch housing, and at least the driving element for this tilting movement.

  because it allows to obtain a particular construction-

  the scheme in question, which retains the association

  respectively one of the two dwellings to a door-

  mold and therefore a compact, clear and space-saving

  despite enlargement compared to the state of the art.

  Particularly advantageous embodiments of the invention are especially obtained in the case of the implementation of

  particularities such as the use of training

  Linear movements for the necessary tilting and translation movements, a guidance of the plane-parallel transport element with respect to the separation plane in the state

  close to the mold carriers with their side mold elements

  particular part of the transport element to the outside.

  his guide for fixing the axis for the movement of

  tilting of the bottom punch housing and for fixing

  a driving member which drives said bottom punch housing, and a combination of a drive

  linear with a system of oscillating levers as

  a driving force for the tilting movement of the bottom punch housing, since all these elements are useful and fundamentally tested elements, although their implementation is not entirely self-evident; which ensure simple, convenient and reliable operation of the entire system.

  Another very advantageous embodiment of the dis-

  positive embodiment according to the invention is characterized in that the

  molds are articulated on a common axis disposed parallel to the plane of separation at the end of the shape opposite to the sole or on an axis disposed parallel to the

  plan of separation at the end of the opposite form to the se-

  which they describe, by means of respectively one

  appropriate training, for example a training

  neaire, a movement of opening and closing scissors

  around said axes for the release and respectively the

  development of the shape, as it allows on the one hand a very good adaptation of the opening and closing movement of the device to its usual use in turntable installations, especially if the end surface of the sole side of the holders molds close together with their side mold elements represents a vertically oriented surface, if the movements of both housing

  on the opposite side to the shape, from the vertical plane de-

  finished by the aforementioned surface, and if the separation plane extends vertically and passes, in the case of rotary table installations with several stations, by the center of rotation of said turntable, and offers on the other hand to the operator particularly easy access to the form as well as to all mold elements that need to be cleaned

  and sprayed with a release agent.

  Furthermore, in another embodiment of the device according to the invention, it is very advantageous to use

  a device in which the mold holders are respectively

  arranged on each side of the separation plane, in a suitable fixing and guiding, consisting for example of a support frame and rails acting as guide rails, so that, by means of suitable driving elements, by means of example respectively linear drive, they can perform each time an opposite translation movement

  in both directions perpendicular to the plane of separation

  to free or enclose the shape, since it allows, in the absence of a height delimitation of an installation equipped with the device according to the invention which nevertheless satisfies the other requirements of spatial delimitations, to mount particular stations. flat on

  a turntable or other stable machine frame.

  In addition, a key benefit is to achieve

  linear drives in the form of piston systems

  hydraulic cylinder, which leads to a variant of

  drive elements whose control is particularly precise and easy and which can be integrated into the device

  in all the necessary dimensions.

  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.

  Figure 1 represents, schematically and partially

  in section, a plan view of an open device, with

  form in supine position and movement of opening and

  placing in a horizontal plane to scissor around a common axis of the two mold holders; FIG. 2 schematically represents a plan view of a device corresponding to that of FIG. 1; with

  simultaneous application of the displacer housing against the over-

  end face on the sole side of the mold carriers close together with their side mold members, and the bottom punch housing therewith; FIG. 3 schematically represents a plan view of a device corresponding to the devices of FIGS. 1 and 2, with the bottom punch housing applied directly.

  against the end surface on the sole side of the mold holders

  close together with their side mold elements, and two parallel axes for opening and closing scissor movement;

  Figure 4 shows schematically and partially

  in section, a front view of a device, with a shape in

  standing position and opening and closing mechanism

  by means of parallel movements in

  poses; FIG. 5 represents, in accordance with FIG. 4, a device in which the displacer housing as well as

  the bottom punch housing is in the correct position

  cated; FIG. 6 shows, according to FIGS. 4 and 5, a device in which the bottom punch housing is applied directly against the end surface on the sole side.

  close-up mold carriers with their side mold elements

ral.

  Fig 1 shows in its upper part and only

  schematically, a portion of a plan view

  a turntable 1 of a well-known construction on the-

  which the device according to the invention shown here in plan

  is mounted as one of several stations, said

  positive can naturally also be installed on any other suitable machine frame On the turntable 1, is fixed by adhesion a support axis 2 which carries an axis 3 oriented in the vertical direction and on which

  two mold holders 4, 5 are articulated in the manner of an article

  scissors in each of the mold holders 4, 5 is

  removably mounted and locked a side mold element

  In addition, turntable 1 is coupled by ad-

  herence with a well-known shape fastener 6 which bears an interchangeable but otherwise immobile shape 7 which, in the present case, is arranged in the horizontal plane and whose boot tip is directed downwards, but it could also be useful to tilt the shape of some

  degrees up or down from the horizontal plane

  The two mold carriers 4 and 5 with their side mold members 4a, 5a are closed or open by a scissor movement around the shape. 7, with the aid of two driving elements 8, 9 hinged to the turntable 1 as well as to the mold carriers 45 and made in the form of hydraulic piston-cylinder systems as in the case

  present or by means of appropriate analogue systems.

  The mold carrier 5 carries at its end on the sole side,

  referred to the form 7, a support 10 connected by adhesion to

  said mold holder and intended for an axis 11 on which is articulated

  a displacer housing 12 which, by means of an element of

  Trailing 13 shown here in the form of a hydraulic piston-cylinder system but also achievable by other suitable mechanisms, can be rotated in the plane

  horizontally and in particular to be applied against the

  nale 14 side midsole mold holders 4, 5 close together with

  their lateral mold elements 4 a, 5 a

  12 is on its directed face, in its pre-application state.

  cited against the end surface 14 on the sole side, a displacement plate 15 provided with a displacer which, together with the lateral mold elements 4a, Sa approximated and the shape

  7, performs in the applied state the mold for a sole of

  The introduction of the necessary polyurethane mixture into the mold cavity thus formed is via a core channel 16 which opens into the region of the boot tip of the form 7 and is brought into the mold cavity. around

  another displacement plate 17 in the housing of de-

  12 to cooperate with a carrot channel sup-

  Complementary 32 continuous in a bottom punch housing

  When the bottom punch housing 18 is suitable-

  applied against the displacer housing 12, the additional displacement plate 17 in the displacer housing 12 creates, by means of the displacer which it carries and jointly

  with engraving in a bottom punch 28 carried by the box-

  18, a mold for shaping a separate outsole which can then be filled with polyurethane via another core channel 31 in the bottom punch housing 18. FIG. mold carrier 4 is equipped on its outer face opposite the separation plane 19, a transport element 20 which consists in the embodiment shown of at least two parallel bars 21 of which only one is visible in the drawing , and a partial section 22 which connects the bars 21 by adhesion and constitutes a combination of

  plates and / or solid frames Bars 21 are respectively

  maintained by a tubular guide 23 connected by adhesive

  4 and oriented such that, by means of a drive element disposed between the bars 21 and the guides 23, and not shown here for clarity, for example a piston-cylinder system acting in parallel

  bars 21, which is adhesively coupled to the carrier

  mold 4 on the one hand and with the transport element 20, on the other hand

  With the partial section 22, on the other hand, the transport element 20 as a whole can be displaced, in the close state of the mold carriers 4, 5 with their lateral mold elements 4a, 5a, in parallel. to the plane of separation 19, in the two opposite possible directions The partial section

  22 on the one hand a support 24 connected by adhesion to that

  ci and intended for an axis 25 on which the housing is articulated

  already mentioned, and on the other hand, a

  movement canism for the bottom punch housing 18

  which is constituted by a hinged knee joint 26 respectively

  rotationally on the partial section 22 also

  although on the bottom punch housing 18, and by one

  respectively rotatably pivoted on the toggle member 26 as well as on the partial section 22, which drive element is shown here in the form of a hydraulic piston-cylinder system but

  which can also be achieved by any other

  The knee brace 26 can rotate the housing

  bottom punch 18 in a horizontal plane and the application of

  in particular, to plead against the end surface 14 on the insole side of the close-fitting portmolds 4, 5 with their mold elements

  4a, 5a or to the extent that the accommodation of

  12 has been previously applied against the final surface

  nale 14 sided side against the face of the mover housing

  12 which carries the displacement plate 17

  The bottom portion 18 bears on its face directed towards the shape 7 in one of its possible positions of application, the bottom punch 28 also mentioned above and provided with an engraving,

  whose engraving serves as has already been said in the realization

  in a second step, also to the production of a midsole between the outsole and the mounting flange. For the filling of the respective molds for the different parts of the boot to be manufactured. the bottom punch housing 18 comprises, in addition to the two core channels 31, 32 already indicated above, an additional core channel 30 which also opens into the etching of the bottom punch 28, but at a level of higher than the carrot channel 31, to be able to fill

  polyurethane the space reserved for the midsole.

  All the carrot channels 30, 31, 32 open into the

  the tip of the boot of the form 7.

  The position of the device according to the invention represents

  1 serves on the one hand for taking a completed boot and, on the other hand, for cleaning all the mold elements, for spraying a mold release agent in these parts.

  elements of the mold and the installation of a new shoe.

  made in a suitable fabric on the form 7 as

  that lining to integrate into the next boot to achieve.

  The position of the device for the following operation is indicated in FIG. 2 in which the device of FIG. 1 is represented in the close state of the mold carriers 4, 5 with their lateral mold elements 4 a, 5 a and the housing of

  displacer 12 as well as bottom punch housing 18.

  The references correspond to those of FIG.

  shown, the displacement plate 15 of the displacement housing

  12 together with Form 7 and the

  side molds 4a, 5a, a mold cavity for

  realization of the rod and the mounting plate by the in-

  intermediate of the core channels 32 and 16, and the bottom punch 28 of the bottom punch housing 18 forms with the displacement plate 17 of the displacer housing 12 as already mentioned above a separate mold for the manufacture of an outsole via the carrot channel

  In this case, the core channel 30 is closed.

  FIG. 3 shows the arrangement of the device for the last operation before the final opening of the mold, in

  which, to represent the instrumental variations pos-

  2, the device of FIG. 2 has been modified in that the mold holders 4 can pivot not around a common vertical axis 3 but around separate vertical axes 34, 35 each of which is connected by adhesion. at the table

  rotating 1 via a modified axis support 33.

  Moreover, the elements represented and the references cor-

  correspond to those in fig 1 In the state represented now

  nally, the two mold carriers 4, 5 with their mold elements

  side 4a, Sa and the bottom punch housing 18 are

  approached, while the displacer housing 12 remains useless

  This combination allows in the way already described more

  high, to achieve through the carrot channel 30,

  valle remaining between the outsole located in the

  28 and the mounting flange already placed on the form 7, a midsole whose properties can be predetermined in such a way that it ensures on the one hand a solid connection between the soles of wear and mounting and that on the other hand it has a great porosity which makes

  the entire soft and comfortable sole.

  The cycle of making a polyurethane boot

  thane is ended by restoring the state represented

in fig 1.

  FIG. 4 shows a front view of a second exemplary embodiment of the device according to the invention in which a

  form support 41 is mounted by adhesion, in position

  hung and oriented parallel to a vertical separation plan

  two displaceable mold holders 43, 44 on a frame

  40 attached by adhesion to a turntable type

  well known or to any stable machine frame not re-

  presented here which must be imagined at the bottom of the drawing The sup-

  port of form 41 door, also in suspended position, a

  form 45 interchangeable but immobile elsewhere, the se-

  shape of the form 45 being directed towards the bottom and the boot tip of the form 45 being oriented towards the turntable not shown here The connecting line between the middle of the

  heel and the boot point are then in the plane of

  partion 42 supra The support frame 40 further supports horizontal spars 46, 47, 48 on which the mold carriers

  43, 44 in which a lateral mold member 43 a.

  44 a is inserted each time, on the side directed towards the other mold carrier 44, 43, can be moved symmetrically by

  relationship to the separation plan by means of training

  49, 50 which in this case are shown as hydraulic piston-cylinder systems but can

  also be realized in the form of other mechanisms

  proprieties, so that they enclose the shape 45 by creating a mold cavity for the stem of the boot to be made or that they release said shape as shown in

fig 4.

  Below the sole-side end surfaces 51 of the mold carriers 43, 44 with their side mold members 43a, 44a are a bottom punch housing 52 and a displacer housing 53, one of which punch

  52 may be animated by means of a coaching element

  54 which is shown here in the form of a hydraulic piston-cylinder system but which can also be realized by other suitable arrangements, of a vertical back-and-forth movement in the

  plan of separation but not in any horizontal plane

  zontal By means of a construction of beams 55, 56 which are to be considered in this representation as being oriented perpendicular to the plane of the drawing, and of several drive elements 57, 58 whose present representation shows only the two elements of FIG. In anterior drive, the displacer housing 53 is installed on a sliding table 59 as a bridge construction which can be raised and lowered, the driving members 57, 58 being movable together respectively parallel to the separation plane, in both possible directions. , while the sliding table 59 itself can be moved horizontally back and forth by means of a system of rollers

  , a rail 61 secured to the carrier frame 40 and two el-

  parallel training units 62 of which only one is visible

  in this representation and which are coupled by ad-

  herence with carrier frame 40 as well as with sheet metal

  63 of the sliding table 59 The driving element

  62 is here also represented in the form of a hydraulic piston system; it can however be replaced,

  in this case also, by any other form of a

adequate training.

  The entire system for moving the displacer housing 53 in the horizontal direction as well as

  vertical is shaped so that, with a sufficient distance between the end surfaces on the sole side 51 of the mold carriers 43,

  44 with their side mold members 43 a,

  44 a and the bottom punch housing 52, this housing de-

  placer 53 can be brought without difficulty into the space created between said elements and, when the mold carriers 43, 44

  with their lateral mold members 43a, 44a are

  In this case, the arrangement constituted by the bridge construction and the sliding table 59 can then be applied against the common end surface 51 of the latter or brought back from this position to the initial position.

  also be replaced by any other system to

identical fet.

  In accordance with the displacer housing 12 shown

  in FIG. 1, the displacer housing 53 bears on

  opposite sides, that is to say in the present case on its upper and lower faces, both a displacement plate 64 equipped with a displacer for the realization of a mounting plate via a channel of carrot 65 in the same displacer housing 53 as a moving plate 66 also provided with a displacer which, in cooperation with the bottom punch 67 embedded in the bottom punch housing 52 and provided with an engraving, can forming a mold for the separate production of a outsole through a core channel 68 The bottom punch housing 52

  further comprises a carrot channel 69 which terminates at a

  calf greater than that of the carrot channel 68 in etching the bottom punch 67 in the bottom punch housing 52

  and is used to fill the remaining space

  45, the lateral mold members 43a, 44a and the bottom punch housing 52, between the previously assembled mounting flange and the outsole, to obtain a porous and elastic midsole. manufacturing of the outsole, this carrot channel is closed In this case, all the carrot channels, 68, 69 open in the heel region of the form 7

  in the mold cavity to be filled respectively.

  The state of the embodiment of the device se-

  the invention described above and shown in FIG 4 corresponds to the state shown in Figure 1 for another embodiment and serves the same operations that have

  have been described in detail in relation to this figure of a

  similar, figs 5 and 6 represent the same agencies

  devices for operations which are identical to those of FIGS. 2 and 3, so that it is possible to give up

  here is a detailed description of figs. 5 and 6.

  The movements and states of movement of the displacer housing 53 and the bottom punch housing 52 are obvious.

figs 5 and 6.

Claims (28)

1, A method of manufacturing polyurethane boots by means of a mold comprising a shape, two lateral mold elements which enclose said shape, can be spaced apart and brought together in a plane of separation of the mold and maintained respectively by a mold carrier, and two sealing elements which can be alternately applied with their lateral mold elements against the end surface of the sole side of the close-up mold carriers, for the alternative embodiment of a mounting flange and a outsole in the form of a displacement plate for producing the mounting flange, held by a displacer housing and provided with a displacer, and an engraved bottom punch for carrying out the outsole maintained by a bottom punch housing, an amount of polyurethane having predetermined properties each time being firstly injected into the space for the shank and the delimited mounting flange, the side mold elements and the displacer, via a cant channel in the displacer housing first applied against the carriers. molds and the mold elements laterally and in its displacer, and then, by a carrot channel in the housing of the bottom punch inserted in the meantime and in its bottom punch, in the space defined between the latter and the sole of aforementioned assembly, characterized by the fact that, as soon as the rod and the mounting flange are made, a space for the realization of the wearing surface area of the outsole delimited simultaneously in another separate mold cavity formed between the displacer housing and the bottom punch housing is filled, via an additional core channel, with polyurethane having the predetermined properties and that the subsequent manufacture The aforesaid utive of the outsole is reduced to providing a midsole area of the outsole which connects the midsole to the wear surface area of the outsole.   Process according to Claim 1, characterized in   a sock made of a suitable fabric and inte-   as a liner in the next boot to be manufactured is mounted on the shape before the realization of the rod and the mounting flange.   3 t Process according to any one of the claims   1 or 2, characterized in that the space for the   of the wearing surface area of the outsole is equipped with a prefabricated insert before the completion of the wear surface area.   4 Process according to Claim 3, characterized in that the insert consists of a wear surface layer, in particular a thin layer, made of an elastic material with predetermined properties.   5. Process according to claim 3, characterized in that the lirnsert consists of one or more mor   (x) of an elastic material having pre-   determined, each piece being smaller than the surface total of the sole.   Process according to any one of the claims   3 to 5, characterized in that the insert comprises one or more piece (s) of sheet metal of a composition and of an appropriate thickness.   Process according to any one of the claims   1 to 6, characterized in that the space for the manufacture   rod is equipped, before the production thereof and at least in the region of the top of the foot, with an insert consisting of one or more piece (s) of sheet metal   of an appropriate composition and thickness.   Process according to any one of the claims   1 to 7, characterized in that the respective quantities   of polyurethane having in each case predetermined properties   boots for fixing a boot are fixed in such a way that the rod and the mounting flange have, after molding, a reduced foam structure, whereas the zone   midsole has a foam structure   and that the outsole area is in a wide range of sure compact.   9 Device for implementing the method se-   one of claims 1 to 8, characterized in that   what the displacer housing (12, 53) on the one hand and the   the bottom punch (18, 52) are provided with drive elements (13, 57, 58, 62, 27, 54) which, in addition to the alternative application of these two housings ( 12, 53, 18, 52) against the end surface (14, 51) on the sole side of the close-up mold carriers (4, 5, 43, 44) with their elements.   side molds (4a, 5a, 43a, 44a), can simul-   the application of the displacer housing (12, 53)   against said end surface on the sole side (14, 51) and the   placing the bottom punch housing (18, 52) against the surface of the displacer housing (12; 53) opposite to said end surface (14, 51) on the sole side, and that the housing of   displacer (12, 53) bears on the opposite side to said earth surface   the sole plate (14, 51) in the state of its application against this end surface (1 4 51), another displacement plate (17, 66) provided with an additional displacer which, together with the engraving in the bottom punch (28, 67) defining, in the abovementioned state of simultaneous application of the displacer housing and the bottom punch housing, a separate space for producing a surface area   of the outsole, which is supplied with polyurethane   thane with appropriate properties through   of a special carrot channel (31, 68).   Device according to claim 9, characterized   characterized in that the housing of the bottom punch (52) is adhesively coupled to at least one drive element (54) through which said bottom punch housing can be moved from a position in which its bearing surface the bottom punch (67) is in a position fit in front of the   end surface (51) on the insole side of the mould-   (43, 44) with their side mold members (43a, 44a) perpendicular to said end surface (51)   sole, in both possible directions; and that the lodge   The displacer member (53) is adhesively coupled to at least one drive member (62) by which   mover housing can be moved from a position   in which its surface carrying the displacement plate (64) for unmolding the mounting flange is disposed parallel to the end surface (51) on the sole side, in at least two opposite directions, with at least one element of supplemental training (57; 58) by which it can be   moved from the same position in two directions   positioned perpendicularly to said end surface (51) on the sole side, the trailing elements (54; 57; 58; 62) can be controlled and arranged in such a way that   when the distance between the end surface (51)   and the surface of the bottom punching box (52)   both the bottom punch (67) is sufficient, the housing of   mover (53) can be engaged without difficulty in the inter-   valle thus created and applied against said terminal surface   (51) Sole side, and removed again in reverse order.   11 Device according to claim 10, characterized   characterized in that the bottom punch housing (52) can be moved only perpendicular to the end surface (51) on the sole side of the close-up mold carriers (43, 44) with   their lateral mold elements (43a, 44a) j and that the box   a displacer (53) equipped with at least one training element   (57, 58) for moving in the perpendicular direction   to the said end surface (511 on the sole side, forms a bridge construction which can be raised and lowered, which is   mounted on a sliding table (59) with fixing points   tion and can be moved in parallel with the   said end surface (51) on the sole side avoiding the box   punching machine (52): including at least one driving element (54) and passing through the bottom punch housing (52) unhindered when said bottom punch housing (52) is at a distance sufficient of said   end surface (51) on the sole side.   Apparatus according to any of the claims   10 or 11, characterized in that the end surface (51) on the sole side of the close-up mold carriers (43, 44) with   their lateral mold elements (43a, 44a) constitute an over-   horizontally, and that the movements of dwellings   placer and bottom punch (53, 52) are carried out underneath   of the horizontal plane defined by said horizontal surface.   13 Apparatus according to claim 9, characterized   characterized in that the displacer housing (12) is adhesively coupled to at least one drive element (13) through which said displacer housing is moved from a position in which it releasably releases in any case space for the application of the housings (12 18) defined in front of the end surface (14) by the vertical projection JO of said end surface (14) on the sole side of the mold carriers (connected together (4, 5) with their elements of lateral molds (4 ', a, by a rocking movement about an axis (11) disposed parallel to and at a suitable distance from said end surface (14) on the sole side, in contact with said end surface (14); ) on the insole side and vice versa, and that the bottom punch housing (18) is adhesively coupled   with at least one driving element (27)   able to bring it, by means of a swinging movement about another axis (25) of the aforementioned type, from a position in which it also completely releases the space for the application of the housings (12: 18) in front of the end surface (14) on the sole side, in contact with said end surface (14) on the sole side and vice versa, with at least one other drive element through which the aforementioned axis (25) for the tilting movement of the bottom punch housing (18) is movable relative to said end surface (14) on the sole side so that said bottom punch housing (18) can be applied directly against said end surface (14) on the insole side and on the other hand against the surface of the displacer housing (12) carrying the additional displacement plate (17) when it has   has already been applied beforehand against the said nale (14) side sole.   Apparatus according to claim 13, characterized   in that at least the single driving element for the   displacement of the shaft (25) for the tilting movement of the housing   punching machine (18) moves said axis (25) so as to cause, in any case in the close state of the mold carriers (4), with their lateral mold elements (4a, 5a), a translational movement perpendicular to the end surface (14) on the sole side of the close-up mold carriers (4, 5) with their lateral mold elements (4 a, 5 a) in one of two possible directions, the housing of said bottom punch (18) always stopping on the plane side defined by the surface   end (14) insole side opposite the shape (7).   Device according to any one of the   13 or 14, characterized in that the axes (i, 25) for tilting movements of the housings (12, 18) are oriented parasleminent to two opposite faces of the end surface (14) on the sole side of the mold carriers (4 51 with their elements side molds (4 a, 5 a) -   Device according to claim 15, characterized in that   in that the axes (1 i 25) for   housing (12, 181 are oriented parallel to the plane of separation (19) of the holder-holders (4, 5) with their   lateral mold elements (4 a, 5 a).   Apparatus according to claim 16, characterized   in that the axes (11, 25) for   housing units (12, 18) are each associated with a   mnle holder (4, 5) and coupled therewith.   Apparatus according to claim 17, characterized   in that at least one driving element (13) for the rocking movement of the displacer housing (12) is fixed on   one of the mold holders (5), and that at least one training element   the movement of the spindle (25) for the tilting movement of the bottom punch housing (18) is mounted on the other mold carrier (4), the latter drive element in turn comprising an element of transport (20) which carries both the axis (25) for the tilting movement of the bottom punch housing (18), that at least one driving element (27) for this rocking movement.   19 Apparatus according to claim 18, characterized   in that the mold carrier (5) to which at least one driving element (13) is attached for the rocking movement of the   mover housing (12) is adhesively connected to a   rigid (10) for the axis (11) for the aforementioned swinging movement.   Device according to claim 19, characterized   in that at least one driving element (13) for the rocking motion of the displacer housing (12) comprises a   linear drive with one or more strands, the end   mite of each strand is fixed on the mold carrier (5) which carries said drive member (13) and of which respectively the other end of each strand is articulated on at least one oscillating lever coupled by adhesion with said housing de-placer (12).   Apparatus according to any of the claims   cations 18 to 20, characterized in that at least one element   drive for the displacement of the axis (25 i for the   rocking housing of the bottom punch housing (18) comprises a linear drive to one or more strands (s), one end of each strand of which is attached to the mold carrier (4) carrying said drive member and respectively the other end of each strand is articulated on an element   transport system (20) in itself, which, by the means of said trainer,   line and a suitable guide (23) coupled by ad-   with said mold carrier (4) can perform a movement   translation in two opposite directions respectively.   the guide (23) being oriented so that when the mold carriers (4,5) with their lateral mold elements (4a, 5a) are in a close position, said movement of   translation is perpendicular to the final surface   nal (14) side of the mussel holders (4, 5) with their   side molds (4a, 5a).   Apparatus according to claim 21, characterized   in that the transport element (20) represents a system   consisting of one or more parallel bars (21) having an appropriate cross-section and connected   between them by adherence to at least one of their extremes   tees, one end of which forms a partial section (22) which is always outside the guide (23), namely in front of its sole end and is made in such a way that it can carry both 'axis (25)' than   at least one drive member (27) for the pivotal movement   housing (181) and of which the other ex-   tremity is displaceably mounted in the guide (23) consisting of one or more tube (s) of adequate cross section.   Apparatus according to any of the claims   18 to 22, characterized in that each of the mold carriers (4, 5) has a substantially flat outer face opposite to the separation plane (19), on which are mounted a   at least one training element for the low-level   mounting of the displacer housing (12) and secondly at least one drive element for the displacement of the shaft (25) for the tilting movement of the bottom punch housing. (18).   24 Apparatus according to any of the claims   21 to 23, characterized in that at least the mold carrier   (4) provided for fixing at least one entraining element   for the displacement of the axis (25) for the low   punching housing housing (18) has a face   outside the separation plan (19) which is in conformity   in such a way that it has, in the close state of the mold carriers (4, 5) with their lateral mold elements (4 aa a), a substantially plane-parallel orientation with respect to the separation plane (19). and serves as a support surface for the adhesively bonding between the guide (23) for the   transport (20) and said mold carrier (4).   Device according to any one of the   22 to 24, characterized in that in the partial section   (22) of the transport element (20) is attached by   a fixing (24) for the axis (25) for the low   Cultivating bottom punch housing (18).   Apparatus according to any of the claims   cations 22 to 25, characterized in that on the section   of the transport element (20) is attached to at least one drive element (27) for the tilting movement of the bottom punch housing (18).   Apparatus according to claim 26, characterized   in that the drive element (27) for the movement   tilting of the bottom punch housing (18) comprises a   Linear drag with one or more strands that is mounted with one end of each strand on the cross-section.   of the transport element (20) and whose respective   the other end of each strand is hinged to a lever system (26) coupled to said punch housing background (18).   28. Device according to claim 27, characterized   in that the levers system (26) coupled with the Ioge-   bottom punch (18) is a knee brace with one or more   stranders (s) which, simultaneously with the application of said bottom punch housing (18) against the end surface (14) on the sole side of the close-up mold carriers (4, 5) with their side mold members (4 a, 5 a) or against the surface   of the displacer housing (12) provided with the displacement plate   supplementary measure (17), previously applied against that   end surface (14) on the sole side is brought into its position   stopping by the associated linear drive and removed from this position by the movement of said linear drive in the opposite direction.   29 Device according to one of the following   9 to 28, characterized in that the mold carriers (4, 5) are articulated on a common axis (3) arranged parallel to the separation plane (19) at the end of the shape (7) opposite to the soleplate , and that they describe, by means of respectively   a suitable driving element (8, 9), for example an   linear flow, an opening and closing movement   in scissors about said axis (3) for the release or the enve- development of form (7).   Device according to any one of the   9 to 28, characterized in that the mold carriers (4, 5)   are each articulated on an axis (34, 35) arranged parallel-   separation plan at the end of the form (7) opposite   on the sole, and that they describe, by means of   a suitable driving element (8, 9), for example   a linear drive, a movement of opening and closing   scissors around said axes (34, 35) for the release   and respectively enveloping the shape (7).   31 Apparatus according to any of the claims   9 to 28, characterized in that the mold carriers (43, 44) are respectively arranged on each side of the separation plane (42), in a suitable fixing and guiding, consisting for example of a support frame (40). ) and longitudinal members (46, 47, 48) serving as guide rails, so that, by means of suitable drive elements (49, 50), e.g. each kings an opposite translational movement   in both directions perpendicular to the plane of separation   tion (42) to release or enclose the shape (45).   Apparatus according to any of the claims   20 to 30, characterized in that the trainings   are made in the form of piston-and-cylinder systems hydraulic dre.   Apparatus according to any of the claims   13 to 32, characterized in that the end surface (14) on the sole side of the close-up mold carriers (4, 5) with   their lateral mold elements (4 a, 5 a) represent an over-   face oriented in the vertical direction, and that the movements of the two housings (12, 18) take place on the side opposite to the shape   (7), the vertical plane defined by the aforementioned surface.   34 Apparatus according to any of the claims   9 to 33, characterized in that the separation plan   (19, 42) extends vertically and, in the case of   rotary table installations with several stations, by the   center of rotation of said turntable.