Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/42—Component parts, details or accessories; Auxiliary operations
  • B29C49/48—Moulds
  • B29C49/4823—Moulds with incorporated heating or cooling means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C33/00—Moulds or cores; Details thereof or accessories therefor
  • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
  • B29C49/06—Injection blow-moulding
  • B29C49/061—Injection blow-moulding with parison holding means displaceable between injection and blow stations
  • B29C49/062—Injection blow-moulding with parison holding means displaceable between injection and blow stations following an arcuate path, e.g. rotary or oscillating-type
  • B29C49/063—Injection blow-moulding with parison holding means displaceable between injection and blow stations following an arcuate path, e.g. rotary or oscillating-type with the parison axis held in the plane of rotation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/42—Component parts, details or accessories; Auxiliary operations
  • B29C49/78—Measuring, controlling or regulating
  • B29C49/786—Temperature
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
  • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
  • B29C2035/0211—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould resistance heating
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
  • B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/42—Component parts, details or accessories; Auxiliary operations
  • B29C49/48—Moulds
  • B29C49/4823—Moulds with incorporated heating or cooling means
  • B29C2049/4838—Moulds with incorporated heating or cooling means for heating moulds or mould parts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/42—Component parts, details or accessories; Auxiliary operations
  • B29C49/48—Moulds
  • B29C49/4823—Moulds with incorporated heating or cooling means
  • B29C2049/4838—Moulds with incorporated heating or cooling means for heating moulds or mould parts
  • B29C2049/4846—Moulds with incorporated heating or cooling means for heating moulds or mould parts in different areas of the mould at different temperatures, e.g. neck, shoulder or bottom
  • B29C2049/4851—Side walls
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/42—Component parts, details or accessories; Auxiliary operations
  • B29C49/48—Moulds
  • B29C2049/4856—Mounting, exchanging or centering moulds or parts thereof
  • B29C2049/4864—Fixed by a special construction to the mould half carriers, e.g. using insulating material between the mould and the mould half carrier
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/42—Component parts, details or accessories; Auxiliary operations
  • B29C49/48—Moulds
  • B29C2049/4879—Moulds characterised by mould configurations
  • B29C2049/4892—Mould halves consisting of an independent main and bottom part
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/42—Component parts, details or accessories; Auxiliary operations
  • B29C49/78—Measuring, controlling or regulating
  • B29C49/786—Temperature
  • B29C2049/7864—Temperature of the mould
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/42—Component parts, details or accessories; Auxiliary operations
  • B29C49/78—Measuring, controlling or regulating
  • B29C49/786—Temperature
  • B29C2049/7864—Temperature of the mould
  • B29C2049/78645—Temperature of the mould characterised by temperature values or ranges
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C2949/00—Indexing scheme relating to blow-moulding
  • B29C2949/07—Preforms or parisons characterised by their configuration
  • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
  • B29C49/06—Injection blow-moulding
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/42—Component parts, details or accessories; Auxiliary operations
  • B29C49/64—Heating or cooling preforms, parisons or blown articles
  • B29C49/6604—Thermal conditioning of the blown article
  • B29C49/6605—Heating the article, e.g. for hot fill
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2031/00—Other particular articles
  • B29L2031/712—Containers; Packaging elements or accessories, Packages
  • B29L2031/7158—Bottles

Definitions

• the invention relates to the manufacture of containers, by blow molding or stretch blow molding, from plastic blanks such as PET (polyethylene terephthalate).
• the blowing technique of a container comprises, in the first place, a heating operation of a blank (whether it is a preform or an intermediate container having undergone a first blowing operation from a preform) at a predetermined temperature greater than the glass transition temperature of the constituent material of the blank.
• the blank thus heated is introduced into a mold having a wall with the impression of a body of the container to be formed, and a fluid (generally air) under pressure (usually between 20 and 40 bars). ) is injected into the blank to press it against the wall and thus give it the shape of the body of the container.
• a fluid generally air
• a drawing operation may be provided, consisting, during blowing, of stretching the blank by means of a sliding rod ensuring the holding of the container in the axis of the mold.
• a first objective is to provide a molding unit equipped with a thermal control device of the mold whose structure allows to lighten it.
• a second objective is to provide a molding unit to ensure a good efficiency of the thermal regulation.
• this molding unit for the manufacture of a container from a plastic blank, this molding unit comprising:
• this mold including a pair of shells each having an inner wall defining an impression portion of a body of the container to be formed, these shells being mounted movable relative to each other between an open position in which the shells are spaced from each other and a closed position where the shells are applied against each other to jointly form the cavity of the container body;
• thermo regulation device of the mold which comprises:
• At least one radiator adapted to exchange heat with it, the or each radiator being integrated into a shell-holder,
• At least one integrated temperature probe to a shell for measuring the temperature in the vicinity of the inner wall, a variator connected on the one hand to the temperature probe and on the other hand to the radiator, this variator being arranged to modulate the radiator temperature as a function of the temperature measured by the probe.
• the offset of the radiators to the shell holder makes it possible to thin the shell, which makes it possible to lighten it and thus to save the material while decreasing the inertia of the molding unit, in favor of the overall productivity.
• the thermal control device comprises a radiator integrated in each shell holder
• the thermal regulation device comprises:
• a primary connector connected to the probe and mounted in the shell carrying the probe
• the radiator comprises at least one electrical resistance housed in a complementary hole in the shell holder;
• the radiator comprises a series of electrical resistors housed in a series of complementary holes formed in the shell-holder;
• the probe is mounted in a blind hole in the shell, the probe extending to an inner end of the hole in the vicinity of the inner wall of the shell;
• the mold includes a mold bottom having a top surface to the footprint of the container to be formed.
• Figure 1 is a perspective view, partially exploded, showing a molding unit
• Figure 2 is an exploded perspective view showing a shell of the molding unit of Figure 1, with a medallion detail on a larger scale;
• FIG 3 is an exploded perspective view showing a shell holder of the molding unit of Figure 1 on which is intended to be hung the shell of Figure 2, with a medallion detail on a larger scale;
• Figure 4 is a perspective view in horizontal section illustrating an embodiment of electrical connection connection from the probe to the drive, with inset a detail on a larger scale;
• Figure 5 is a partial vertical sectional view illustrating the mounting of the probe in the shell.
• Figure 1 a molding unit 1 for the manufacture of a container - such as a bottle - from a plastic blank, typically PET.
• the blank may be a rough injection preform, or a container blank having, from a preform, undergone one or more preliminary preforming operations.
• the container typically comprises a substantially cylindrical body, a bottom closing the body at a lower end thereof, and a neck formed at an upper end of the body and through which the container can be filled.
• This molding unit 1 can be part of a series of similar units mounted on a rotating common carousel equipping a manufacturing machine, chain and mass, all identical containers, at high speed (of the order of several tens of thousands per hour).
• the molding unit 1 comprises, in the first place, a mold 2 to the impression of the container to be formed.
• This mold 2 includes a pair of half-molds 3, also called half-shells (or more simply shells), each having an inner wall 4 defining an impression portion of the body of the container to be formed.
• the shells 3 are symmetrical and their inner walls 4 each define a half-cavity of the container body.
• Each shell 3 has a substantially cylindrical outer face 5 and an inner flat face 6 from which the half-cavity is hollowed out.
• the shells 3 are preferably made of a metallic material (eg aluminum or an aluminum alloy, or steel, preferably stainless) and are mounted movable relative to one another between a position open in which the shells 3 are spaced from each other ( Figure 1) and a closed position in which the shells 3 are applied against each other to jointly form the cavity of the container body, their faces 6 internally coinciding to form together a joint plan.
• a metallic material eg aluminum or an aluminum alloy, or steel, preferably stainless
• the shells 3 are articulated in rotation relative to each other about a common axis A.
• the shells 3 could be mounted in translation relative to each other, perpendicular to their internal faces 6.
• the shells 3 jointly define, in the closed position, a lower opening 7, and the mold 2 includes a bottom 8 of mold having a face 9 greater than the footprint of the container to be formed, this mold bottom 8 being received (optionally slidably) in the lower opening 7.
• the molding unit 1 further comprises a pair of shell holders 10 on each of which a shell 3 is removably attached.
• Each shell holder 10 is in the form of a half-cylinder (which may be made of a metallic material, eg aluminum or an aluminum alloy) having a cylindrical inner face 11 complementary to the outer face 5 of the corresponding shell 3.
• Each holder-shell 10 is surmounted by a retaining half-ring 12 which fits into an external groove 13 formed in the corresponding shell 3 to ensure the vertical immobilization of the shell 3.
• the rotational immobilization of the shell 3 with respect to its shell holder 10 is carried out by means of lateral flanges 14 provided with bosses 15 which fit into complementary reserves 16 formed hollow in the shell 3 from its base. internal face 6.
• Each lateral flange 14 is secured to the respective shell holder 10 by means of screws 17 which, through notches 18 formed in the lateral flange 14, are caught in holes
• the retaining half-ring 12 and the lateral flanges 14 make it possible to removably fasten the shell 3 in its shell holder 10. It is thus possible, without changing the shell holder 10, to replace the shell 3 to allow the manufacture of another container model.
• the molding unit 1 also comprises a pair of mold support brackets 20 in each of which a shell holder 10 is fixed, e.g. by screwing.
• the mold-support brackets 20 are mutually articulated in rotation about the axis A, which is defined by a shaft 21.
• each bracket 20 mold holder performs the function of shell holder.
• the mold holders are rotated about the axis A by a control mechanism (not shown), which may be of the cam and linkage type; the mold support brackets 20 can also be locked in the closed position of the mold 2 by a locking system comprising clevises 22 defined on one of the brackets
• the molding unit 1 further comprises a device 24 for regulating the temperature of the mold 2, which comprises at least one radiator 25, able to exchange heat therewith, this radiator 25 being integrated into a shell-holder 10 (i.e., housed in the mass of the shell holder 10).
• radiator refers to a body suitable for exchange heat with the environment to cool it down or, on the contrary, warm up.
• the radiator 25 could be in the form of a channel (or more channels) traversed (s) a heat transfer fluid.
• the radiator 25 is of the electric type (for heating the mold 2) and comprises at least one electrical resistor 26 housed in a complementary hole 27 formed in the shell holder 10
• each radiator 25 comprises a series of cylindrical resistors 26 in the form of a rod, each axially housed in a cylindrical complementary hole 27 formed in the shell holder 10.
• the resistors 26, four in number are distributed regularly in the circular manner in the shell holder 10 at a distance substantially equal to each other.
• the thermal control device 24 advantageously comprises two radiators 25, each mounted (similarly) in a respective shell holder 10.
• the resistors 26 of each radiator 25 may be connected in series or in parallel and connected to an electrical terminal (not shown), possibly external to the molding unit 1.
• the thermal control device 24 further comprises at least one temperature probe 28 integrated in at least one of the shells 3 to measure the temperature in the vicinity of the inner wall 4, and a connected dimmer 29, on the one hand, at the temperature probe 28 and, on the other hand, the radiator 25, this variator 29 being arranged to modulate the temperature of the radiator 25 as a function of the temperature measured by the temperature probe 28.
• a single temperature probe 28 may be provided, but it is also possible to provide a plurality of temperature probes 28, mounted in the same shell 3 in several places (for example at different heights), or in the two shells 3 to measure the temperature. temperature in the vicinity of each wall 4.
• the variator 29 regulates and regulates the power dissipated by the radiator 25 as a function of the temperature measured by the temperature sensor 28.
• the temperature sensor 28 is for example a thermocouple. According to an embodiment illustrated in the figures, the temperature probe 28 is mounted in a blind hole formed in the shell 3 and extends to an inner end 31 of the blind hole, situated in the vicinity of the wall 4. internal shell 3.
• the temperature sensor 28 may be mounted on a threaded base 32 which is screwed into a threaded hole 33 made coaxially with the blind hole.
• the temperature sensor 28 is connected to the drive 29 by means of a physical (ie electric) or electromagnetic (wireless) connection 34 through which the temperature sensor 28 transmits its temperature measurement.
• connection of the temperature probe 28 is physical, the link 34 being in the form of an electric cable.
• the connection 34 of the temperature probe 28 to the variator 29 can pass through the shell holder 10 (and possibly the mold bracket 20), and it is advantageous in this case to connect the temperature sensor 28 to the converter. 29 thanks to fast connectivity.
• the thermal control device 24 comprises a primary connector connected to the temperature sensor 28 and mounted in the shell 3 carrying this, and a secondary connector 36 connected to the variator 29 and mounted in the corresponding shell holder 10 (that is to say the shell holder 10 which is attached to the shell 3 carrying the temperature probe 28).
• the secondary connector 36 is complementary to the primary connector 35 so as to cooperate with it when the shell 3 is fixed on its shell holder 10.
• the primary connector is of the female type, and the secondary connector 36 of the male type.
• the primary connector 35 comprises, for example, a housing 37, advantageously made of plastic, which carries conductive sleeves 38 to which can be connected detachably (eg via screws 39) electrical wires 40 to the temperature probe 28.
• the primary connector 35 can be detachably fastened to the shell 3, for example being housed in a complementary recessed reserve 41 formed in the outer face 5 of the shell 3.
• the attachment of the primary connector to the shell 3 can be carried out by snapping.
• the housing 37 comprises for example a pair of elastic tabs 42 each provided with a claw 43 which engages with a shoulder 44 formed in a side wall of the reserve 41 recessed.
• the mounting of the temperature probe 28 and the primary connector in the shell 3 is illustrated by the arrows in the detail locket of FIG. 2.
• the temperature sensor 28 is inserted into the blind hole 30, the base 32 being screwed into the threaded hole 33.
• the primary connector 35 is fitted into the recess 41 in recess, the tabs 42 of the housing 37 being snapped into the shoulders 44.
• the electrical connection of the temperature probe 28 to the secondary connector 36 can be made prior to their respective mounting ( as in the example shown in Figure 2), or after it.
• the secondary connector 36 comprises, for example, a housing 45, advantageously made of plastics material, nestable on the housing 37 of the primary connector 35.
• the housing 45 of the secondary connector 36 carries conductive pins 46 complementary to the sleeves 38 and adapted to fit into them by providing electrical continuity of the connection 34.
• the secondary connector 36 can be detachably attached to the shell holder 10, for example by being housed in a complementary recessed reserve 47, formed in the internal face 11 of the shell holder 10.
• the housing 45 comprises for example a pair of elastic tabs 48 each provided with a claw 49 which engages with a shoulder 50 formed in a side wall of the reserve 47 recessed.
• the pins 46 are connected to the variator 29 by a conductor 51 which can pass through not only the shell holder 10, but also the corresponding mold-holder bracket 20, through an opening 52 formed in the -this.
• the secondary connector 36 cooperates with the primary connector 35, the housings 37, 45 fitting at least partially into one another and the pins 46 coming from to be introduced into the sleeves 38, thus achieving the electrical continuity between the probe 28 and the variator 29.
• a thermal contact is made between the outer face 5 of the shell 3 and the inner face 11 of the shell holder 10, this allows a heat exchange between them and thus ensures that the calories produced by the radiator (s) 25 are conveyed to the shell 3 via the shell holder 10.
• the molding unit 1 which has just been described has the following advantages.
• the fact that the radiator (s) 25 being (are) deported (s) of the shell 3 by being integrated (s) in the (s) holder-shell (s) 10 allows to release the shell 3 corresponding, and thus to refine it by decreasing the amount of material necessary for its realization.
• the shell 3 is thus lightened, to the benefit of the overall mass of the molding unit 1. This results in a reduction of the masses handled by the operators in charge of the maintenance and thus an improvement of the ergonomics of the machine as well as a decrease of the time of interruption of the production.
• the lightening also contributes to a decrease in the inertia of such a molding unit, which can provide certain advantages when the unit is carried by a carousel.
• the temperature taken by the temperature probe 28 at the shell 3 makes it possible to accurately evaluate the temperature in the mold 2, and thus to regulate precise thermal of it.
• the connectors 35, 36 make it possible to rapidly and automatically connect the temperature probe 28 to the variator 29 when mounting the shell 3 in the shell holder 10, which reduces the time needed to replace a shell 3.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Moulds For Moulding Plastics Or The Like (AREA)
• Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=53200215

Family Applications (1)

Country Status (5)

Families Citing this family (6)

Family Cites Families (4)

• 2015
  • 2015-04-15 FR FR1553350A patent/FR3035019B1/fr not_active Expired - Fee Related
• 2016
  • 2016-04-01 US US15/566,671 patent/US20180104885A1/en not_active Abandoned
  • 2016-04-01 JP JP2017553940A patent/JP2018511501A/ja active Pending
  • 2016-04-01 WO PCT/FR2016/050748 patent/WO2016166437A1/fr active Application Filing
  • 2016-04-01 EP EP16716046.4A patent/EP3283275A1/de not_active Withdrawn

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