WO2009144664A2 - System for blowing plastic containers, specifically bottles. - Google Patents
System for blowing plastic containers, specifically bottles. Download PDFInfo
- Publication number
- WO2009144664A2 WO2009144664A2 PCT/IB2009/052203 IB2009052203W WO2009144664A2 WO 2009144664 A2 WO2009144664 A2 WO 2009144664A2 IB 2009052203 W IB2009052203 W IB 2009052203W WO 2009144664 A2 WO2009144664 A2 WO 2009144664A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pick
- transfer wheel
- drive motor
- moulding
- drum
- Prior art date
Links
- 238000007664 blowing Methods 0.000 title claims description 7
- 238000000071 blow moulding Methods 0.000 claims abstract description 29
- 238000000465 moulding Methods 0.000 claims abstract description 18
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims 5
- 230000003750 conditioning effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Classifications
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- 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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging 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
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/12—Stretching rods
-
- 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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42069—Means explicitly adapted for transporting blown article
-
- 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
- B29C49/4236—Drive 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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G29/00—Rotary conveyors, e.g. rotating discs, arms, star-wheels or cones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/84—Star-shaped wheels or devices having endless travelling belts or chains, the wheels or devices being equipped with article-engaging elements
- B65G47/846—Star-shaped wheels or wheels equipped with article-engaging elements
- B65G47/847—Star-shaped wheels or wheels equipped with article-engaging elements the article-engaging elements being grippers
-
- 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
- B29C49/783—Measuring, controlling or regulating blowing pressure
- B29C2049/7831—Measuring, controlling or regulating blowing pressure characterised by pressure 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
- 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
- B29C2049/7879—Stretching, e.g. stretch rod
-
- 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
- B29C2049/788—Controller type or interface
- B29C2049/7882—Control interface, e.g. display
-
- 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
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/12—Stretching rods
- B29C49/1202—Means for fixing the stretching rod to the driving means, e.g. clamping means or bayonet connections
-
- 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
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/122—Drive means therefor
- B29C49/1222—Pneumatic
-
- 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
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/122—Drive means therefor
- B29C49/123—Electric drives, e.g. linear motors
-
- 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
- B29C49/28—Blow-moulding apparatus
- B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
- B29C49/36—Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
-
- 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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42073—Grippers
-
- 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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42073—Grippers
- B29C49/42075—Grippers with pivoting clamps
-
- 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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42073—Grippers
- B29C49/42081—Grippers adjustable for different preform size
-
- 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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42093—Transporting apparatus, e.g. slides, wheels or conveyors
- B29C49/42095—Rotating wheels or stars
-
- 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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42093—Transporting apparatus, e.g. slides, wheels or conveyors
- B29C49/42105—Transporting apparatus, e.g. slides, wheels or conveyors for discontinuous or batch transport
-
- 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
- B29C49/4236—Drive means
- B29C49/42362—Electric drive means, e.g. servomotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0235—Containers
- B65G2201/0244—Bottles
- B65G2201/0247—Suspended bottles
Definitions
- This invention relates to a plant for blow-moulding plastic containers, particularly bottles.
- prior art plant of the type described for example in patent applications EP-1445090-A1 and WO-0224435-A1, used for making plastic bottles, comprises: a blow-moulding wheel mounted in such a way as to rotate about a first longitudinal axis and equipped with a plurality of blow- moulding units, each of which is rotationally fed by the blow-moulding wheel about the first axis, comprises a mould for blow-moulding at least one bottle from a respective parison, and cooperates with at least one stretching rod designed to axially deform the parison.
- the stretching rods are moved along a line parallel to the first axis by a drive device comprising a first cam and, for each stretching rod, a respective first tappet roller engaged in the first cam itself.
- the plant further comprises: an oven for thermally conditioning the parisons; a first feed device for advancing the parisons through the oven; a first transfer wheel mounted rotatably about a second longitudinal axis to transfer the parisons one after the other from the first feed device to the blow-moulding wheel; and a second transfer wheel mounted rotatably about a third longitudinal axis to transfer the bottles one after the other from the blow-moulding wheel to a second device for feeding the bottles to a bottle filling device or to another conveying device.
- each transfer wheel comprises: a drum mounted to rotate about a respective second or third axis; a plurality of pick-up and transporting units, each of which is mounted on the drum to feed a respective parison or a respective bottle about the respective second or third axis, comprises a supporting arm rotatably coupled to rotate, relative to the drum, about a respective fourth axis, and is further equipped with a pick-up member rotatably coupled to the supporting arm to rotate, relative to the supporting arm, about a respective fifth axis; and an orienting device designed to orient the pick-up and transporting units about the respective fourth and fifth axes.
- the orienting device comprises a second and a third cam and, for each pick-up and transporting unit, a second tappet roller mounted on the respective supporting arm and engaged in the second cam, and a third tappet roller mounted on the respective pick-up member and engaged in the third cam.
- the orientation of the pick-up and transporting units about the respective fourth and fifth axes makes it possible to correctly transfer the parisons and the bottles, respectively, from the first feed device to the blow-moulding wheel and from the blow-moulding wheel to the second feed device according to the spacing of the parisons along the first feed device, the spacing of the moulding units and the spacing of the bottles along the second feed device.
- Prior art bottle blow-moulding plants of the type described above are not, however, free of disadvantages due mainly to the fact that the passage from parisons and bottles of a first size to parisons and bottles of a second size, different from the first size, necessitates each time replacing the first, second and third cams, creating serious difficulties for personnel in charge and involving relatively long plant set-up times.
- This invention has for an aim to provide a blow-moulding plant for making plastic containers, particularly bottles, that is free of the above mentioned disadvantages and that is simple and inexpensive to implement. Accordingly, this invention provides a plant for blow-moulding plastic containers, particularly bottles, as described in the appended claims.
- FIG. 1 is a schematic plan view, with some parts cut away for clarity, of a preferred embodiment of the plant according to the invention
- FIG. 2 is a schematic plan view, with some parts cut away for clarity, of a first detail of the plant of Figure 1 ;
- FIG. 3 is a schematic side view, with some parts cut away for clarity, of the detail of Figure 2;
- Figure 4a is a schematic plan view, with some parts cut away for clarity, of another embodiment of the detail of Figures 2 and 3, illustrated in a first operating position
- - Figure 4b is a schematic plan view, with some parts cut away for clarity, of another embodiment of the detail of Figures 2 and 3, illustrated in a second operating position;
- FIG. 5 a is a schematic side view, with some parts cut away for clarity, of a second detail of the plant of Figure 1, illustrated in a first operating position
- - Figure 5b is a schematic side view, with some parts cut away for clarity, of the detail of Figure 5a, illustrated in a second operating position;
- FIG. 6 is a schematic side view, with some parts cut away for clarity, of another embodiment of the detail of Figure 5;
- Figure 7a is a schematic side view, with some parts cut away for clarity, of the detail of Figure 5a made according to a second embodiment
- Figure 7b is a schematic side view, with some parts cut away for clarity, of the detail of Figure 5b made according to a second embodiment.
- the numeral 1 denotes in its entirety a plant for blow-moulding plastic containers, in this particular case, plastic bottles 2 (Figure 3), from respective parisons 3 of known type ( Figure 5), each of which comprises an elongated cup-shaped body 4 having an externally threaded open end 5, and an annular neck 6 extending radially outwards from the outside surface of the body 4 itself.
- the plant 1 comprises a blow-moulding machine 7 in turn comprising a blow-moulding wheel 8 mounted in such a way as to rotate continuously about its longitudinal axis 9, which is substantially vertical and at right angles to the drawing plane of Figure 1, and a plurality of moulding units 10 which are mounted round the edge of the wheel 8, are uniformly distributed around the axis 9 according to a predetermined spacing, and are advanced by the wheel 8 around the axis 9.
- Each unit 10 comprises a mould 11 in turn comprising two half-moulds of known type, not illustrated, that move between an open position where the half- moulds (not illustrated) are positioned at a predetermined distance from each other to receive a parison 3 or release a bottle 2, and a closed position, where the half- moulds (not illustrated) form inside them at least one moulding cavity 12 having the shape of a bottle 2 and being open to the outside at a hole 13 at the top of it smaller in diameter than a neck 6, and acting in conjunction with a pneumatic device of known type, not illustrated, designed to blow compressed air into the parison 3 inside the cavity 12.
- each cavity 12 acts in conjunction with a respective stretching rod 14 which extends along a vertical line 15 parallel to the axis 9, is mounted at a position coaxial with the cavity 12 and is mobile along the line 15 between a raised position ( Figure 5a), where the rod 14 is located substantially outside the respective parison 3, and a lowered position ( Figure 5b), where the rod 14 engages the respective parison 3 in such a way as to stretch it axially along the line 15.
- the stretching rods 14 are moved along the line 15 by a drive device 16 comprising, for each stretching rod 14, a respective drive motor 17 fixed to a mounting bracket 18 of the unit 10, and having an output shaft 19 that is mounted to rotate about a longitudinal axis 20 parallel to the line 15, is coupled by a lead nut and screw mechanism to a plate 21 on which the stretching rod 14 itself is mounted and is rotationally driven by the motor 17 so as to move the stretching rod 14 in a straight line between its raised and lowered positions.
- a drive device 16 comprising, for each stretching rod 14, a respective drive motor 17 fixed to a mounting bracket 18 of the unit 10, and having an output shaft 19 that is mounted to rotate about a longitudinal axis 20 parallel to the line 15, is coupled by a lead nut and screw mechanism to a plate 21 on which the stretching rod 14 itself is mounted and is rotationally driven by the motor 17 so as to move the stretching rod 14 in a straight line between its raised and lowered positions.
- each drive motor 17 comprises an electric motor 17a (in this particular case, a brushless electric motor) and a control encoder 17b connected, together with the encoders 17b of the other electric motors 17a, to an electronic control unit 22 designed to control the operation of the motors 17 and, hence, the movement of the stretching rods 14 along the line 15 according to the size of the parisons 3, that is to say, according to the dimensions and/or shape of the parisons 3.
- an electric motor 17a in this particular case, a brushless electric motor
- a control encoder 17b connected, together with the encoders 17b of the other electric motors 17a, to an electronic control unit 22 designed to control the operation of the motors 17 and, hence, the movement of the stretching rods 14 along the line 15 according to the size of the parisons 3, that is to say, according to the dimensions and/or shape of the parisons 3.
- each drive motor 17 comprises a linear motor.
- the stretching rod 14 is connected directly to a linear electric motor 100 which moves it vertically.
- the motor 100 might also be of the non-linear type.
- linear electric motor 100 allows the stretching rods 14 to be driven at very high speeds. More in detail, the stretching rod 14 moves vertically at an average speed of up to more than 1.5 metres per second.
- the stretching rod 14 moves vertically at an average speed of between 1.5 and 3 metres per second. In a second configuration of the plant, the stretching rod 14 moves vertically at an average speed of between 3 and 6 metres per second.
- Increasing the stretching speed of the rods 14 also means that the pressure of the fluid used for blow-moulding the parisons 3 can be less than 30 bar.
- the fluid can be applied at a pressure of between 7 and 25 bar.
- each motor 17 acts in conjunction with a respective pushing device 23 comprising, in this particular case, a pneumatic compensation cylinder
- the plant 1 further comprises an oven 26 of known type for thermally conditioning the plastic material of the parisons 3 to a temperature greater than its glass transition temperature; a feed wheel 27 of known type for feeding the parisons 3 to the oven 26; a first transfer wheel 29 for transferring each parison 3 from the oven 26 to a respective moulding unit 10; and a second transfer wheel 30 for transferring each bottle 2 from the respective moulding unit 10 to a customary feed line, not illustrated, of a customary plant, not illustrated, for filling the bottles 2, or to a bottle 2 outfeed line (not illustrated).
- an oven 26 of known type for thermally conditioning the plastic material of the parisons 3 to a temperature greater than its glass transition temperature
- a feed wheel 27 of known type for feeding the parisons 3 to the oven 26
- a first transfer wheel 29 for transferring each parison 3 from the oven 26 to a respective moulding unit 10
- a second transfer wheel 30 for transferring each bottle 2 from the respective moulding unit 10 to a customary feed line, not illustrated,
- Each wheel 29, 30 comprises a drum 31 mounted to turn continuously about its substantially vertical longitudinal axis 32 parallel to the line 15, and a plurality of pick-up and transporting units 33 (in this particular embodiment six pick-up and transporting units 33) that are mounted along a peripheral edge of the drum 31, protrude radially outwards from the drum 31, and are advanced by the drum 31 itself around the axis 32.
- pick-up and transporting units 33 in this particular embodiment six pick-up and transporting units 33
- each unit 33 comprises a supporting arm 34 that extends transversally of the axis 32, is hinged to the drum 31 to rotate, relative to the drum 31 itself, about a pivot axis 35 substantially parallel to the line 15, and mounts a pick-up member 36 which extends transversally of the axis 32 and which comprises a crank lever 36a hinged to the arm 34 to rotate, relative to the arm 34 itself, about a pivot axis 37 substantially parallel to the line 15.
- the member 36 also comprises a pick-up element 36b having the shape of a fork and in turn comprising two arms 38 which are mounted to oscillate about respective pivot axes 39 parallel to the line 15 between a position of releasing (not illustrated) and a position of clamping ( Figure 2) a respective bottle 2 or a respective parison 3, and which a spring 40 interposed between the arms normally holds in the clamping position where the arms 38 grip it.
- a pick-up element 36b having the shape of a fork and in turn comprising two arms 38 which are mounted to oscillate about respective pivot axes 39 parallel to the line 15 between a position of releasing (not illustrated) and a position of clamping ( Figure 2) a respective bottle 2 or a respective parison 3, and which a spring 40 interposed between the arms normally holds in the clamping position where the arms 38 grip it.
- the units 33 are oriented about the respective axes 35 and 37 by an actuating device 41 comprising, for each unit 33, a respective first drive motor 42 that is mounted on the drum 31 and has an output shaft 43 which is parallel to the line 15 and which the respective arm 34 is keyed to, and a respective second drive motor 44 that is fixed to the respective arm 34 and has an output shaft 45 which is parallel to the line 15 and which the respective crank lever 36a is keyed to.
- rotation of the wheels 29, 30 about the respective axes 32 and simultaneous orientation of the supporting arms 34 about the axes 35 and of the pick-up members 36 about the axes 37 enables the wheel 29 to receive the parisons 3 according to the spacing of the oven 26 and to release them to the blow-moulding machine 7 according to the spacing of the moulding units 10, and enables the wheel 30 to receive the bottles 2 according to the spacing of the moulding units 10 and to release them to the above mentioned filling plant (not illustrated) according to the spacing of the above mentioned feed line (not illustrated) or to the above mentioned outfeed line (not illustrated) according to the spacing of the outfeed line itself (not illustrated).
- each drive motor 42, 44 comprises an electric motor 42a, 44a (in this particular case, a brushless electric motor) and a control encoder 42b, 44b connected, together with the encoders 42b, 44b of the other electric motors 42a, 44a, to the electronic control unit 22 designed to control the operation of the motors 42, 44 and, hence, the orientation of the pick-up and transporting units 33 about the respective axes 35, 37 according to the size of the bottles 2 and of the parisons 3.
- the embodiment illustrated in Figure 4 differs from the one illustrated in
- a respective pick-up unit 46 which comprises a rocker arm 47 hinged to the respective arm 34 to rotate about the axis 37 and which in turn comprises a first and a second arm 48, 49 opposite each other, the arm 48 being equipped with a pick-up element 50a, similar to the elements 36b, and the arm 49 being equipped with two pick-up elements 50b that are similar to the elements
- the drive motors 44 allow the pick-up units 46 to be selectively oriented about the respective axes 37 according to the size of the bottles 2 to be blow-moulded and/or the number of moulding cavities 12 in each mould 11.
- the pick-up elements 50a are moved towards the outside of the respective wheel 29, 30 to an operating position and the pick-up elements 50b are moved towards the inside of the respective wheel 29, 30 to a rest position ( Figure 4a) when each mould 11 has a single moulding cavity 12 for blow-moulding a single bottle 2, while the pick-up elements 50a are moved towards the inside of the respective wheel 29, 30 to a rest position and the pick-up elements 50b are moved towards the outside of the respective wheel 29, 30 to an operating position ( Figure 4b) when each mould 11 has two moulding cavities 12 for blow-moulding two bottles 2.
- each supporting arm 34 is slidably coupled to the respective drum 31 and each pick-up member 36 or pickup unit 46 is slidably coupled to the respective supporting arm 34.
- one of the elements of each pick-up and transporting unit 33 is slidable while the other element of each pick-up and transporting unit 33 is rotatable.
- the orienting device 41 comprises a pick-up and transporting unit 33, a first drive motor 42 for moving the coupling element 34, while the pick-up member 36; 46 is driven by kinematic couplings such as cams or sliders.
- the orienting device 41 comprises, for each pick-up and transporting unit 33, a first drive motor 42 for moving the pick-up member 36; 46, while the coupling element 34 is driven by kinematic couplings such as cams or sliders.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0908626A BRPI0908626A2 (en) | 2008-05-28 | 2009-05-26 | system for blowing plastic containers, specifically bottles |
EP09754290A EP2279070A2 (en) | 2008-05-28 | 2009-05-26 | System for blowing plastic containers, specifically bottles. |
JP2011511145A JP2011521811A (en) | 2008-05-28 | 2009-05-26 | System for blow molding containers, especially bottles |
CN2009801192487A CN102036803A (en) | 2008-05-28 | 2009-05-26 | System for blowing plastic containers, specifically bottles |
MX2010012977A MX2010012977A (en) | 2008-05-28 | 2009-05-26 | System for blowing plastic containers, specifically bottles. |
US12/990,527 US20110056809A1 (en) | 2008-05-28 | 2009-05-26 | System for blowing plastic containers, specifically bottles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08425384.8 | 2008-05-28 | ||
EP08425384 | 2008-05-28 |
Publications (3)
Publication Number | Publication Date |
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WO2009144664A2 true WO2009144664A2 (en) | 2009-12-03 |
WO2009144664A3 WO2009144664A3 (en) | 2010-05-27 |
WO2009144664A4 WO2009144664A4 (en) | 2010-07-29 |
Family
ID=39731240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2009/052203 WO2009144664A2 (en) | 2008-05-28 | 2009-05-26 | System for blowing plastic containers, specifically bottles. |
Country Status (9)
Country | Link |
---|---|
US (1) | US20110056809A1 (en) |
EP (1) | EP2279070A2 (en) |
JP (1) | JP2011521811A (en) |
KR (1) | KR20110010772A (en) |
CN (1) | CN102036803A (en) |
BR (1) | BRPI0908626A2 (en) |
MX (1) | MX2010012977A (en) |
RU (1) | RU2010146300A (en) |
WO (1) | WO2009144664A2 (en) |
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DE102014005321A1 (en) * | 2014-04-10 | 2015-10-15 | Khs Corpoplast Gmbh | Apparatus and method for transporting and handling containers |
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Also Published As
Publication number | Publication date |
---|---|
JP2011521811A (en) | 2011-07-28 |
RU2010146300A (en) | 2012-07-10 |
WO2009144664A4 (en) | 2010-07-29 |
WO2009144664A3 (en) | 2010-05-27 |
MX2010012977A (en) | 2010-12-21 |
BRPI0908626A2 (en) | 2015-10-06 |
CN102036803A (en) | 2011-04-27 |
EP2279070A2 (en) | 2011-02-02 |
US20110056809A1 (en) | 2011-03-10 |
KR20110010772A (en) | 2011-02-07 |
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