CN107000299A - The receptacle-forming processes of stretching rod are braked during blowing - Google Patents
The receptacle-forming processes of stretching rod are braked during blowing Download PDFInfo
- Publication number
- CN107000299A CN107000299A CN201580065578.8A CN201580065578A CN107000299A CN 107000299 A CN107000299 A CN 107000299A CN 201580065578 A CN201580065578 A CN 201580065578A CN 107000299 A CN107000299 A CN 107000299A
- Authority
- CN
- China
- Prior art keywords
- blowing
- stretching rod
- container
- mould
- green body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B29C49/08—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
- 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
- B29C49/122—Drive means therefor
- B29C49/1232—Magnetic
-
- 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
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
-
- 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
Abstract
A kind of manufacturing method for container, it utilizes plastics crude green body (3) manufacture container (2) in former (1), and former is furnished with：Mould (5)；The injection device (11) of injection fluid in crude green body (3)；The stretching rod (26) that can be moved between high-order and low level；Methods described includes in succession：Crude green body (3) is incorporated into the process in mould (5)；Pre- blowing process, is included in the operation of the pre- blowing pressure fluid of injection and the operation for making stretching rod (26) be moved from its high position to its low level in crude green body (3)；Process is blown, is included in injection blowing pressure fluid in crude green body (3)；With stretching rod (26) the mechanical braking of low level operation.
Description
Technical field
The crude green body that the present invention relates to the use of plastics (such as polyethylene terephthalate or PET) system is blown by stretching
Crude green body processed carrys out manufacture container.
Background technology
Generally, container have main body, the bottom of main body lower end closed main body and in main body open upper end with allow hold
Filling and discharge the neck of device.
For manufacture container, it will be previously heated to higher than material glass transition temperature (being about 80 DEG C in the case of pet)
Temperature crude green body (crude preform or by crude preform by advance comprising operation obtain in the middle of hold
Device) it is introduced into mould, mould is equipped with the wall for limiting the die cavity with container die cavity；And by neck by pressure fluid such as pressure gas
Body (being usually air) is injected into crude green body, so that material reclines on the mould wall.Injection is typically carried out with two procedures：Pre-blowing
Process processed, pre- blowing process is to be generally the so-called pre- blowing pressure injection fluid between 5 to 10 bars；Followed by blower
Sequence, it is to inject fluid higher than the so-called blowing pressure between pre- blowing pressure, generally 20 to 40 bars.
In pre- blowing, by the material formation foam of heating and softening, foam is simultaneously along parallel with the main shaft of mould
Axial direction and expand and deploy along the radial direction vertical with the axis of mould.When blow start when, material with mould
Wall is contacted, but is molded not completely.Blowing allows material to be close on wall, so as to be molded completely.
To avoid any container off-axis and ensuring the well distributed of material, use what can be moved axially in a mold
Rod forces crude green body axial tension.The distal end that the rod has can push crude green body bottom, until being allowed to abut in container bottom type
On the mould bottom of chamber.
The motion of known use pneumatic cylinders restrained stretching rod for a long time, for example, see French Patent (FRP) FR 2662631
(DYNAPLAST).The pneumatic supply of pressurized strut is general empty by being simply connected to 7 bars (100psi (pound/square inch)) compression
Gas pipeline is ensured that the speed of stretching rod carries out mechanical adjustment by cam.
Recently proposed to replace pneumatic control with Electromagnetic Control, referring to French Patent (FRP) FR 2798093 or its US equivalent
Patent US 6722868, both is all under SIDEL exabytes.The technology, which has, not only saves pressure air but also limits using abrasion
The two-fold advantage of part (magnetic control is contactlessly carried out), is intended to gradually replace the not so good pneumatic control of performance earlier.
Preferably, stretching rod keep being against on mould bottom during blowing (and container material be located at stretching rod and mould bottom it
Between), to avoid material that any slip occurs in the presence of blowing pressure, when container bottom (thus mould bottom) has complicated projection
When it is especially true.In fact, slide can cause uneven distribution of the material on bottom so that produce container mechanical strength and
Equilibrium problem.
But, the pressure in container produces axial resistance to the distal end of stretching rod, and this axial resistance is intended to make stretching
Rod leaves mould bottom (even if stretching rod rising).Therefore, in pneumatic control, start cylinder size, which must determine into, to be caused to stretching rod
It is applied more than the driving force of resistance.And in Electromagnetic Control, stretching rod, which is held in place, will consume a large amount of electric currents, and easily cause control
Magnetic circuit overheat processed.
The content of the invention
Therefore, a kind of purpose is the convenient holding stretching rod during blowing so that avoid the mechanical composition part of control system
Any size excessive (in the case of pneumatic control) or limitation electrisity consumption (in the case of Electronic control).
Therefore, proposing a kind of manufacturing method for container first, hold for being manufactured in former using plastic crude green body
Device, former is furnished with：
- mould, it is furnished with wall and mould bottom, and wall limits the die cavity with container die cavity, extended along main shaft, mould bottom is in wall
Lower end closed die cavity；
- injection device, it has pre- blowing loop and blowing loop, and pre- blowing loop is furnished with pre- blowing pressure fluid source,
Blow loop and be furnished with blowing pressure fluid source, blowing pressure is higher than pre- blowing pressure；
- draw unit, it has movable part, and movable part includes stretching rod, and stretching rod can be relative to the wall in height
Moved axially between position and low level, in a high position, stretching rod extends outside die cavity, in low level, the distal end of stretching rod is located at mould bottom
Near；
This method includes in succession：
- the process introducing crude green body in mould carried out in a stretching rod high position；
- process is blown in advance, pre- blowing process includes following operation：
- pre- blowing pressure fluid is injected into crude green body by blowing loop in advance；
- stretching rod is moved to low level from a high position；
- blowing process, it includes injecting blowing pressure fluid of the pressure higher than pre- blowing pressure to slightly by blowing loop
Operation in base；And
Mechanical braking operations of-the stretching rod in low level.
This method may additionally include the container decompression process after blowing process, in this case, be opened in decompression process
The mechanical braking operations of stretching rod are completed while dynamic.
The mechanical braking of stretching rod is preferably carried out during at least a portion of blowing process.
In addition, stretching rod the mechanical braking operations of low level can start in：
Before-pre- blowing process terminates,
At the end of-pre- blowing process, or
After-blowing process starts.
Mould bottom may be mounted to that stretching position of the stowed position with mould bottom closed cavity of die cavity can be departed from mould bottom relative to wall
It is movable between putting；In this case, manufacture method may include blasting operation, and blasting operation is at least the one of blowing process
Mould bottom is set to be moved from the stowed position at mould bottom to its extended position during part.In this case, to the braking of stretching rod
It is enough to prevent stretching rod from removing from mould bottom, while allowing stretching rod to raise under the thrust of mould bottom.
Secondly a kind of vessel making machine is also proposed, for utilizing plastic crude green body manufacture container, vessel making machine includes
Former, former is furnished with：
- mould, it is furnished with wall and mould bottom, and wall limits the die cavity with container die cavity, extended along main shaft, mould bottom is in wall
Lower end closed die cavity；
- injection device, it has pre- blowing loop and blowing loop, and pre- blowing loop is furnished with pre- blowing pressure fluid source,
Blow loop and be furnished with blowing pressure fluid source, blowing pressure is higher than pre- blowing pressure；
- draw unit, it has movable part, and movable part includes stretching rod, and stretching rod can be relative to the wall in height
Moved axially between position and low level, in a high position, stretching rod extends outside die cavity, in low level, the distal end of stretching rod is located at mould bottom
Near；
- control unit, it is programmed with restrained stretching rod from a high position to low level or moved in turn from low level to a high position,
And control in succession fluid of the injection from pre- blowing loop and blowing loop to being placed in the crude green body in mould；
In vessel making machine：
- draw unit has the mechanical brake controlled by control unit, and mechanical brake is equipped with actuator and is fixed on
The brake block of actuator, brake block can be movable between off-position and application position, in off-position, brake block disengaging activity
Part, in application position, brake block is contacted with movable part；
- control unit is programmed to control the system during the fluid from blowing loop is injected into crude green body
Motion block is moved to its application position.
Brief description of the drawings
According to will be embodied to embodiment description, other objects of the present invention and advantage with reference to the accompanying drawings
Come, in accompanying drawing：
Fig. 1 is the perspective cutaway view of former, and the former is furnished with draw unit, and expression is in stretching and in advance
Before blowing starts；
Fig. 2 is similar to Fig. 1, wherein, former is shown during process is blown and stretching rod is in low level, and circle
It is middle to represent the enlarged detail portions figure on the distal end of stretching rod that centers；
Fig. 3 is the horizontal section detail drawing of the former along Fig. 2 III-III sections, shows the machinery of movable part
Brake, it is furnished with brake block, here, and brake block is in off-position；
Fig. 4 is the cross-sectional details figure according to Fig. 3 square frames IV centered on brake block one end；
Fig. 5 is similar to Fig. 4, shows that brake block is in application position, in the application position, brake block abuts in movable part
Complementary portion on；
Fig. 6 is line chart, shows change in location of the stretching rod during a complete molding cycle；With numeral on the line chart
Indicate different container formation process and process is powered or powered off to draw unit.
Embodiment
Show to be made by plastics, especially PET (poly é thylene t é r é phtalate) by stretch blow in Fig. 1
The former 1 of the container molding 2 of crude green body 3.Crude green body 3 can be crude injection preform (as in this example) or be
By carrying out the intermediate receptacle that one or multi-channel advance comprising operation is obtained to crude preform.
In fact, the former similar with other of former 1 is installed along with the circulation conveying of the rotation of forming machine
On device.
Former 1 is automatically manipulated by control unit 4, and control unit 4 has the control that at least one is furnished with actuator
Device (such as industrial programmable automation controller API types：Aut-mate pr-grammable industriel initial contracting
Write).
First, each former 1 has mould 5, and mould is furnished with wall 6 and mould bottom 9, and the wall 6 is limited with to be formed
The die cavity 7 of the die cavity of container 2, extends along main shaft 8, and the mould bottom 9 is furnished with upper surface 10, and the upper surface has container 2 to be formed
The die cavity of bottom.
Mould 5 is, for example, file clip-type, and with two half modules 5A, 5B, the two half modules are hinged around a public hinge
Together, the two half modules are opened to allow one crude green body 3 of container 2 and introducing for one after the other discharging formation, the crude green body 3 is advance
Heating was carried out in the thermal conditioning machine for be arranged in forming machine upstream.
Secondly, each former 1 has injection device 11, and injection device has the nozzle 12 for limiting injection room 13.Spray
The alignment mould 5 of mouth 12 is installed, can the axially activity between separation point position and bonding station relative to mould, in separation point position, spray
The break away from moulds of mouth 12 is can both be introduced into crude green body 3 into mould, while the container 2 of formation can be discharged again, in bonding station (Fig. 1 to 2
Shown in), nozzle 12 is hermetically abutted on mould 5 around crude green body 3, to ensure that injection room 13 and the internal flow of crude green body 3 connect
It is logical.
In addition, injection device 11 has pre- blowing fluid circuit 14, it is electronic by the pre- blowing manipulated by control unit 4
Valve 16, makes injection room 13 be fluidly connected with pre- blowing pressure fluid source 15.In fact, fluid is gas, such as air.In advance
Blowing pressure is, for example, between 5 to 10 bars.
In addition, injection device 11 has blowing fluid circuit 17, it passes through the blowing motor-driven valve that is manipulated by control unit 4
19, injection room 13 is fluidly connected with blowing pressure fluid source 18, wherein blowing pressure is higher than pre- blowing pressure.It is actual
On, fluid is air.Blowing pressure is, for example, between 20 to 40 bars.Finally, injection device 11, which has, removes air circuit 20, and degasification is returned
Road makes injection room 13 be fluidly connected with free air by the ventilation motor-driven valve 21 also manipulated by control unit 4.
3rd, each former 1 has draw unit 22, and draw unit is furnished with：
- frame 23, it is fixed on the circulating conveyor of forming machine, and substantially aligned mould 5 extends；In this example, machine
Frame takes the shape of the letter U on cross section；
- movable part 24, it is furnished with balladeur train 25 and stretching rod 26, and stretching rod 26 is fixed on balladeur train 25 by near-end 27, is used for
The holding container 2 of axis 8 in forming process by the rounded distal 28 relative with near-end 27 along mould 5；
- motor 29, it is connected in movable part 24, for ensuring that the movable part is moved in some conditions.It is electronic
Machine 29 is connected to control unit 4, and control unit ensures to control to supply alternating current to it by circuit 30.
As illustrated in fig. 1 and 2, stretching rod 26 is axially extending through nozzle 12.Realize to come between stretching rod 26 and nozzle 12
The sealing of autonomous source 15 and the fluid of secondary source 18, such as by being carried by nozzle 12 and regardless of stretching rod axial location
The dynamic seal being all steadily contacted with stretching rod 26.
Motor 29 is, for example, linear induction motor, is had：
- linear stator 31, stator is fixed on frame 23, and electric current is supplied to produce magnetic field by loop 30, and it is in control
Moved linearly under the control of unit 4,
- line rotor 32, it is fixed on balladeur train 25, is installed in face of stator 31, carries a series of permanent magnets, these are forever
Long magnet is synchronously moved with stator field.
Therefore, be mounted to can be relative to frame 23 (thus relative to mould 5) under for balladeur train 25 (together with stretching rod 26)
Translation activity between column position：
- high-order (Fig. 1), in the high position, stretching rod 26 completely disengages from mould 5, or even the crude green body 3 in mould 5 is installed on
Outside；
- low level (Fig. 2), in the low level, stretching rod 26 is received within mould 5, and its distal end 28 is located near mould bottom 9, shape
Into (or in forming process) container 2 be sandwiched between mould bottom 9 and the distal end 28 of stretching rod 26.
Straight-line guidance to movable part 24 relative to frame 23 is ensured by one or more clips 33, one
Or multiple clips 33 are fixed on balladeur train 25 and one or more guide rails 34 with being fixed on frame 23 coordinate.It is this to be oriented to essence enough
Really to keep constant air gap 35 between stator 31 and rotor 32.
4th, former 1 has mechanical brake 36, and it can make movable part 24 fix indefinite relative to frame 23,
So that stretching rod 26 is fixed relative to mould 5 and mould bottom 9.
Embodiment according to Fig. 3, brake 36 has brake block 37, and brake block is mounted to can be in application position
Movable between (Fig. 5) and off-position (Fig. 4), in application position, (more precisely brake block 37 with being fixed on movable part 24
Be fixed on balladeur train 25) guide block (piste) 38 carry out plane contact, with the composition surface between brake block 37 and guide block 38 produce
The raw frictional force for preventing them from mutually moving, in off-position, brake block 37 departs from guide block 38.
Brake 36 has actuator 39, and actuator 39 is configured to the control according to control unit 4, is placed in brake block 37
A position or another location in its position.The actuator 39 can be it is electronic, still, being preferable to carry out according to Fig. 3
Mode, actuator 39 is fluid (hydraulic pressure is pneumatic) formula.More precisely, in an illustrated embodiment, actuator 39 is in nonoculture
With the form of pressurized strut, with cylinder 40 and bar 41, brake block 37 is installed on bar.
Bar 41 is fixed on piston 42, and piston is mounted to can be in cylinder 40 between application position and off-position (Fig. 3)
Slide, the application position corresponds to the application position of brake block 37, the off-position corresponds to the release position of brake block 37
Put.
Cylinder 40 is fixed and (fixed especially by screw) in frame 23, on such as Shelf External.Opening 43 is then opened
In frame 23, to allow bar 41 to pass through.
Cylinder 40 is closed by antetheca 44 and rear wall 45.Bar 41 sealingly extends through antetheca 44, and room 46, room are limited together with antetheca
In can inject pressure fluid.Room 46 is by the motor-driven valve 48 that is controlled by control unit 4, with pressure fluid (such as air or oil) source
49 are in fluid communication.In an illustrated embodiment, fluid is air, and motor-driven valve 48 is three way type：One leads to and is connected to power supply 49,
Two-way is connected to room 46, and threeway is connected to free air.
At least one back-moving spring 47 is disposed between piston 42 and rear wall 45, here, back-moving spring compression work,
In shown embodiment, back-moving spring 47 is compound spring, with double coaxial spring coil, so as to increase spring rate and Qi Shi
It is added on the compression stress on piston 42.(i.e. when control unit 4 by motor-driven valve 48 is communicated to room 46 when there is no pressure in room 46
During free air), back-moving spring 47 makes piston 42 (so that brake block 37) be placed in its application position.On the contrary, single by control
Member 4 by motor-driven valve 48 control to carried out in room 46 fluid injection then cause piston 42 (so that causing brake block 37) to
Changed under the reset force that anti-spring 47 applies to its off-position.
Braking guide block 38 can be in the form for the attachment for being installed on movable part 24, be fixed on balladeur train 25.According to figure
3rd, the embodiment shown in 4 and 5, guide block 38 is T-shaped, with core 50 and plate 51, and guide block 38 is fixed on balladeur train by core 50
On 25, plate 51 is extended laterally relative to core 50.
Brake block 37 has end face 52, in application position, and end face 52 is resisted against on plate 51 to apply frictional force to plate.
On material, brake block 37 can be with composite or even ceramic as disk brake friction wafer
It is made, composite includes organic base-material added with fiber, especially glass fibre or carbon fiber.As for guide block 38, it as
Brake disc is the same, with steel, cast iron, carbon fibre composite or even ceramics are made.
By crude green body 3 (especially preform) manufacture container 2, this is included in mould and is first in open position, then first
In the close position and stretching rod 26 is in the front travel introducing crude green body 3 in mould carried out under high-order (Fig. 1).
The pre- blowing process 100 of crude green body 3 is then set, and it includes following operation：
The pre- blowing pressure fluid of-injection is into crude green body 3；Therefore, control unit 4 controls pre- blowing motor-driven valve 16 to open, with
Pre- blowing pressure fluid source 15 and injection room 13 (so that with crude green body 3) is in fluid communication；
- during the decline process 110 of stretching rod 26, stretching rod 26 is moved to its low level (Fig. 2) from its high position；
Therefore, control unit 4 controls to power to motor 29.
Pre- blowing causes crude green body 3 to expand, until crude green body is only partially contacted with mold wall 6 and mould bottom 9, pre- blowing pressure is not
It is enough crude green body 3 is abutted in completely on wall 6.In other words, it is insufficient to allow crude green body to be molded.
Make a concerted effort (white arrow in Fig. 2 thin portion circle) with R sign resistances, these resistances are by forming process
The pressure that the distal end 28 of the stretching rod 26 extended in crude green body 3, any convex shoulder (or stage) that may have to it if necessary apply
Power (black arrow in Fig. 2 thin portion circle) and produce.
Even if as shown in fig. 6, blowing process 100 and the decline process 110 of stretching rod 26 are overlapped in advance, but their own opening
Time beginning and end time not necessarily overlap.Particularly, the decline process 110 of stretching rod 26 is advantageously in blowing process in advance
Start before 100, then start pre- blowing process 100 when the distal end 28 of stretching rod 26 reaches the bottom of (by estimation) crude green body 3,
Otherwise the off-axis of crude green body 3 can be produced.During the decline process 110 of stretching rod 26, brake 36 is maintained at off-position.
The blowing process 200 of crude green body 3 is then set, and it includes following operation：
- blowing pressure fluid is injected in crude green body 3；Therefore, control unit 4 controls pre- blowing motor-driven valve 16 to close and control
Blowing motor-driven valve 19 is opened, and (so that with crude green body 3) is in fluid communication so that blowing pressure fluid source 18 and injection room 13；
- during the so-called locking process 210 of stretching rod 26, make stretching rod 26 fixed (Fig. 2) in its low level,
To make the material being interposed between stretching rod 26 and mould bottom 9 be held in the bottom center of container 2, and the material is avoided to be pressed in blowing
Power effect is lower to occur any slide.
Blowing makes the material tight of crude green body 3 abut on the wall 6 of mould 5 and mould bottom 9, so that container 2 is molded.
Blowing motor-driven valve 19 is kept it turned on during the predetermined time (being actually zero point several seconds), during the time,
Material experience contacts with wall 6, cools down (or phase inverse annealing, this, which depends on wall 6, will cool down or to heat), and it is intended to make material
Material solidification, so that the fixed shape of container 2.
When stretching rod 26 touches mould bottom 9 (by the material of container 2 being interposed between rod and mould bottom) --- control is single
Member 4 is detectable or estimates this contact, and the controller control that control is programmed for this stops powering to motor 29, to avoid
Its any overheat.Therefore, stretching rod 26 is set in the mechanical braking operations of low level.This mechanical braking is achieved in that：According to for
The instruction activation brake 36 of this control unit 4 being programmed, i.e., supply fluid by motor-driven valve 48 to the room 46 of actuator 39
(carrying out fluid source 49), so as to cause brake block 37 to be transformed into application position.On brake block 37 because with braking guide block 38 contact and
Make a concerted effort R described in the Friction Compensation of generation, it is sufficient to ensures that stretching rod 26 is fixed during blowing.
The activation of brake 36 starts the locking process 210 of stretching rod 26.According to a kind of embodiment, process 210 is locked
Startup with blowing process 200 startup carry out simultaneously.But, startup and the blowing process of the locking process 210 of stretching rod 26
200 startup is not inevitable progress simultaneously, because the contact with mould bottom 9 of stretching rod 26 is than the pre- end for blowing process 100 more
It is early to carry out, or more late progress as shown in Figure 6.
Therefore, in the case of more late progress, as shown in fig. 6, (i.e. motor-driven valve is blown in control for the startup of blowing process 200
19 open) then prior to stretching rod 26 the locking process 210 of low level startup.In view of motor-driven valve (particularly blowing motor-driven valve 19)
Response time and time (0. more than zero second) for being set up in crude green body 3 needed for blowing pressure, the locking process of stretching rod 26
Delay of 210 beginning relative to the beginning of blowing process 200 is only apparent.Because the stroke of brake block 37 is short, it is from releasing
The conversion for putting position to application position is also extremely short (about 0. 01 seconds), so that the pressure actually in crude green body 3 reaches and blown
Before pressing pressure, stretching rod 26 is effectively fixed in low level.In other words, with joint efforts R will not reach be enough to make stretching rod 26 from
The elevated numerical value of its low level.
In modification, when stretching rod 26 reaches mould bottom 9 before blowing process 100 in advance terminates, pre- blowing process 200
Start the startup for the locking process 210 that can be later than stretching rod 26.
As can be seen that stretching rod 26 during blowing not by mechanical braking in the case of, it is necessary to during blowing keep pair
Stator 31 is fully powered-on, and this can cause the quickly overheat of stator 31, and because the gear of stretching rod 26 is leaned against on mould bottom 9, rotor 32 can then be protected
Hold and be locked in place.
But, it is contemplated that keep powering to the part of stator 31 during locking process 210, think brake 36 to stretching rod
26 mechanical forces applied increase electromagnetism component (and this will not cause stator 31 to overheat).
The locking process 210 of stretching rod 26 continues during at least a portion of blowing process 200.In the reality shown in Fig. 6
Apply in example, locking process 210 terminates simultaneously with blowing process 200, control unit 4 controls and (consider the response time) brake simultaneously
36 rotate and control blowing motor-driven valve 19 to close to its off-position.
In modification, locking process 210 can be terminated before blowing process 200 terminates.In this case, control unit
4, which do sth. in advance control brake 36, rotates to its off-position and controls to power to stator 31 so that stretching rod 26 rises.Because R with joint efforts
Help to make stretching rod increase, so stator 31 need not completely power, so as to save the electric energy of the consumption of draw unit 22.
As long as the pressure in crude green body 3 (followed by container 2) is equal to blowing pressure, stretching rod 26 can be remained stationary.
According to a kind of embodiment, mould bottom 9 is mounted to can be relative to wall in the stowed position of the disengaging of mould bottom 9 die cavity 7
It is movable between the extended position of the closed cavity 7 of mould bottom 9, to allow to be impacted during at least a portion of blowing process
(boxage) operate, blasting operation is to make mould bottom move to its extended position from the stowed position at mould bottom 9, to utilize mould bottom
9 pairs of materials increase the assisting tension of its mechanical strength.In this case, the brake arrangement of stretching rod 26 is into being enough to prevent
Stretching rod 26 is removed from mould bottom 9, while allowing to make stretching rod 26 raise under the thrust at mould bottom 9 in impact process.
It is decompression process 300 after blowing process 200, it includes following operation：
- container 2 is connected with free air；The motor-driven valve therefore, the control blowing motor-driven valve 19 of control unit 4 is closed and ventilated
21 open；
- if necessary, (in container and while air communication) injects in container 2 fluid by stretching rod 26 come for container
2 scavengings, therefore, stretching rod 26 is furnished with lateral (i.e. perpendicular to main shaft 8) through hole.In this case, injection device 11 has
Scavenging loop and motor-driven valve, the scavenging loop include scavenging pressure fluid source, and scavenging pressure is equal to or less than blowing pressure
More than pre- blowing pressure, the motor-driven valve is controlled by control unit 4 so that scavenging fluid source and stretching rod 26 (thus with container 2)
Connection；
- in the rise process 310 of stretching rod 26, make stretching rod 26 mobile from its low level to its high position, to allow opening
After mould container 2 is discharged from mould 5.
If only setting the pressure in container and air communication, referred to as degasification, container 2 quickly to be reached due to pressure balance
To atmospheric pressure.In this case, as shown in fig. 6, the rise of stretching rod 26 can simultaneously start with degasification.If setting is swept
Gas, then scavenging will carry out a predetermined time segment (several seconds of 0. 0) before the interruption.In this case, stretching rod 26
Rise postpone to allow scavenging, then interrupt scavenging to start the rise of stretching rod.Then, ventilation is kept so as to container
2 carry out last degasification.
In order to discharge container 2, rise, the die sinking of mould 5 and the motor-driven valve 21 of ventilating of the control nozzle 12 of control unit 4
Close.Container 2 is discharged, and the cycle can restart.
Claims (8)
1. a kind of manufacturing method for container, for utilizing plastic crude green body (3) manufacture container (2), shaping in former (1)
Equipment is furnished with：
- mould (5), it is furnished with wall (6) and mould bottom (9), and wall limits the die cavity (7) with container (2) die cavity, along main shaft (8)
Extension, lower end closed die cavity (7) of the mould bottom in wall (6)；
- injection device (11), it has pre- blowing loop (14) and blowing loop (17), and pre- blowing loop is furnished with pre- blowing pressure
Fluid source (15), blowing loop is furnished with blowing pressure fluid source (18), and blowing pressure is higher than pre- blowing pressure；
- draw unit (22), it has movable part (24), and movable part includes stretching rod (26), and stretching rod can be relative to institute
State wall (6) to move axially between high-order and low level, in a high position, stretching rod (26) extends outside die cavity (7), in low level, draw
The distal end (28) for stretching rod (26) is located near mould bottom (9)；
Manufacturing method for container includes in succession：
- the process introducing crude green body (3) in mould (5) carried out in stretching rod (26) high position,；
- process (100) is blown in advance, pre- blowing process includes following operation：
- pre- blowing pressure fluid is injected into crude green body (3) by blowing loop (14) in advance；
- stretching rod (26) is moved to low level from a high position；
- blowing process (200), it includes injecting the blowing pressure fluid that pressure is higher than pre- blowing pressure by blowing loop (17)
To the operation in crude green body (3)；
Characterized in that, manufacturing method for container includes mechanical braking operations of the stretching rod (26) in low level.
2. manufacturing method for container according to claim 1, it is characterised in that the mechanical braking operations of stretching rod (26) are blowing
Carried out during at least a portion of process (200) processed.
3. manufacturing method for container according to claim 1 or 2, it is characterised in that the mechanical braking operations of stretching rod (26)
Start before blowing process (100) in advance terminates.
4. manufacturing method for container according to claim 1 or 2, it is characterised in that the mechanical braking operations of stretching rod (26)
Start at the end of blowing process (100) in advance.
5. manufacturing method for container according to claim 1 or 2, it is characterised in that the mechanical braking operations of stretching rod (26)
Start after blowing process (200) starts.
6. manufacturing method for container according to any one of the preceding claims, it is characterised in that manufacturing method for container includes
The decompression process of container (2) after blowing process；Also, in the machine for being depressured completion stretching rod (26) while process starts
Tool brake operating.
7. manufacturing method for container according to any one of the preceding claims, it is characterised in that mould bottom (9) are mounted to can phase
Depart from activity between the stowed position of die cavity (7) and the extended position of mould bottom (9) closed cavity at mould bottom for wall (6), it is described
Manufacturing method for container makes mould bottom (9) from stowed position to stretching position during being then included at least a portion of blowing process (200)
Put mobile operation.
8. a kind of vessel making machine, for utilizing plastic crude green body (3) manufacture container (2), vessel making machine is set including shaping
Standby (1), former is furnished with：
- mould (5), it is furnished with wall (6) and mould bottom (9), and wall limits the die cavity (7) with container (2) die cavity, along main shaft (8)
Extension, lower end closed die cavity (7) of the mould bottom in wall (6)；
- injection device (11), it has pre- blowing loop (14) and blowing loop (17), and pre- blowing loop is furnished with pre- blowing pressure
Fluid source (15), blowing loop is furnished with blowing pressure fluid source (18), and blowing pressure is higher than pre- blowing pressure；
- draw unit (22), it has movable part (24), and movable part includes stretching rod (26), and stretching rod can be relative to institute
State wall (6) to move axially between high-order and low level, in a high position, stretching rod (26) extends outside die cavity (7), in low level, draw
The distal end (28) for stretching rod (26) is located near mould bottom (9)；
- control unit (4), it is programmed with restrained stretching rod (26) from a high position to low level or in turn from low level to high displacement
It is dynamic, and the successive injection of control is from pre- blowing loop and blows the fluid in loop into the crude green body (3) being placed in mould (5)；
It is characterized in that：
- draw unit (22) has the mechanical brake (36) controlled by control unit (4), and mechanical brake is furnished with actuator
(39) and the brake block (37) of actuator (39) is fixed on, brake block can be movable between off-position and application position, is releasing
Position is put, brake block (37) departs from movable part (24), and in application position, brake block (37) is contacted with movable part (24)；
- control unit (4) is programmed to control institute during the fluid from blowing loop (17) is injected into crude green body (3)
Brake block (37) is stated to move to its application position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1462008A FR3029447B1 (en) | 2014-12-05 | 2014-12-05 | PROCESS FOR FORMING CONTAINERS WITH BRAKING OF A STRETCH ROD DURING BLOWING |
| FR1462008 | 2014-12-05 | ||
| PCT/FR2015/053269 WO2016087761A1 (en) | 2014-12-05 | 2015-12-01 | Method for forming containers, with braking of a stretching pin during blowing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107000299A true CN107000299A (en) | 2017-08-01 |
| CN107000299B CN107000299B (en) | 2019-08-06 |
Family
ID=52392148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580065578.8A Expired - Fee Related CN107000299B (en) | 2014-12-05 | 2015-12-01 | The receptacle-forming processes of stretching rod are braked during blowing |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3227083A1 (en) |
| CN (1) | CN107000299B (en) |
| FR (1) | FR3029447B1 (en) |
| WO (1) | WO2016087761A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109466044A (en) * | 2017-09-08 | 2019-03-15 | 西德尔合作公司 | Blow device and method |
| CN112955301A (en) * | 2018-11-08 | 2021-06-11 | 西得乐集团 | Method for manufacturing plastic container |
| WO2022013179A1 (en) * | 2020-07-15 | 2022-01-20 | Khs Gmbh | Method for controlling a drive of a stretching rod of a device for producing containers |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201272023Y (en) * | 2008-09-25 | 2009-07-15 | 汪祥建 | Sealing apparatus of plastic stretch blow molding machine |
| CN101758615A (en) * | 2009-05-17 | 2010-06-30 | 柳州市精业机器有限公司 | Double-station reciprocating rotary type injection stretch blow hollow forming machine |
| WO2011154326A1 (en) * | 2010-06-09 | 2011-12-15 | Norgren Gmbh | Stretch blow moulding system using proportional valves |
| US20120207873A1 (en) * | 2011-02-15 | 2012-08-16 | Eberle Theodore F | Reverse stretch rod for machine hygiene and processing |
| CN103158245A (en) * | 2011-12-14 | 2013-06-19 | 技术设计工程股份有限公司 | Blowing machine valve |
| CN103547434A (en) * | 2011-05-19 | 2014-01-29 | 西德尔合作公司 | Method for manufacturing containers, including an anticipated boxing operation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2662631B3 (en) * | 1990-05-31 | 1992-09-04 | Dynaplast Sa | MACHINE FOR THE BLOWING OF PET BI-ORIENTED PACKAGING AS WELL AS THE BLOWING PROCESS IMPLEMENTED. |
| FR2798093B1 (en) * | 1999-09-03 | 2001-11-30 | Sidel Sa | ROTARY DRAWING-BLOWING MACHINE WITH MAGNETIC DRAWING ROD CONTROL |
| FR2943941B1 (en) * | 2009-04-02 | 2011-04-22 | Sidel Participations | MOLDING UNIT WITH PILOTED TUYERE |
-
2014
- 2014-12-05 FR FR1462008A patent/FR3029447B1/en not_active Expired - Fee Related
-
2015
- 2015-12-01 EP EP15810691.4A patent/EP3227083A1/en not_active Withdrawn
- 2015-12-01 WO PCT/FR2015/053269 patent/WO2016087761A1/en active Application Filing
- 2015-12-01 CN CN201580065578.8A patent/CN107000299B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201272023Y (en) * | 2008-09-25 | 2009-07-15 | 汪祥建 | Sealing apparatus of plastic stretch blow molding machine |
| CN101758615A (en) * | 2009-05-17 | 2010-06-30 | 柳州市精业机器有限公司 | Double-station reciprocating rotary type injection stretch blow hollow forming machine |
| WO2011154326A1 (en) * | 2010-06-09 | 2011-12-15 | Norgren Gmbh | Stretch blow moulding system using proportional valves |
| US20120207873A1 (en) * | 2011-02-15 | 2012-08-16 | Eberle Theodore F | Reverse stretch rod for machine hygiene and processing |
| CN103547434A (en) * | 2011-05-19 | 2014-01-29 | 西德尔合作公司 | Method for manufacturing containers, including an anticipated boxing operation |
| CN103158245A (en) * | 2011-12-14 | 2013-06-19 | 技术设计工程股份有限公司 | Blowing machine valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109466044A (en) * | 2017-09-08 | 2019-03-15 | 西德尔合作公司 | Blow device and method |
| CN112955301A (en) * | 2018-11-08 | 2021-06-11 | 西得乐集团 | Method for manufacturing plastic container |
| CN112955301B (en) * | 2018-11-08 | 2023-08-29 | 西得乐集团 | Method for manufacturing plastic container |
| WO2022013179A1 (en) * | 2020-07-15 | 2022-01-20 | Khs Gmbh | Method for controlling a drive of a stretching rod of a device for producing containers |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3029447A1 (en) | 2016-06-10 |
| CN107000299B (en) | 2019-08-06 |
| WO2016087761A1 (en) | 2016-06-09 |
| EP3227083A1 (en) | 2017-10-11 |
| FR3029447B1 (en) | 2016-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5377300B2 (en) | Apparatus and method for post-treatment of preforms | |
| CN103547432B (en) | Method for the stretch-blowing of a container, comprising a retraction of the stretch rod during a boxing operation | |
| CN107000299A (en) | The receptacle-forming processes of stretching rod are braked during blowing | |
| KR101842383B1 (en) | Molding device and method for replacing molding device components | |
| ITRM20100350A1 (en) | PLASTIC CONTAINERS PRODUCTION PLANT | |
| CN105034326B (en) | With the blow moulding machine of substrate shaft coupling driven automatically | |
| RU2013122869A (en) | LIQUID OR HYDRAULIC BLASTING | |
| CN106132663A (en) | Method and the moulding unit of container is manufactured with large impact stroke | |
| BR112015017425B1 (en) | injection-compression apparatus for the manufacture of thermoplastic containers | |
| CN101733907B (en) | System and method for injection moulding of micro-foamed plastic part | |
| CN108145909B (en) | The instantaneous moulding process of multi-colored product | |
| KR101543389B1 (en) | Blow mold unit and blow-molding machine using same | |
| KR20180002614A (en) | Biaxial stretching and blow molding device | |
| CN103552222B (en) | The electric heat type heat cycle mould that water jet cools fast and cooling means thereof | |
| KR101290549B1 (en) | Hotrunner system | |
| ITRM20130035A1 (en) | ROTARY JOINT FOR A PLASTIC TRANSFER MADE FROM AN EXTRUDER TO MOLDS OF A PREFORMING ROTARY MOLDING MACHINE | |
| EP3636412B1 (en) | Injection blow molding apparatus | |
| KR101290550B1 (en) | Hotrunner system | |
| CN101961905A (en) | Injection molding machine with cavity superficial instant-heating mechanism of injection mold | |
| KR20120066090A (en) | Mold apparatus | |
| CN105415625A (en) | Cooling system of casting mould | |
| KR20100028051A (en) | A method for post-mold treatment of a molded article and an apparatus for implementing the method | |
| CN107244059B (en) | A kind of plastic bottle automatic processing device | |
| KR101487870B1 (en) | Molding machine | |
| CN201950791U (en) | Injection molding machine with cavity superficial instant-heating mechanism of injection mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190806 Termination date: 20201201 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |