CN101362371B - Method and device for forcibly inserting drop into recess of compression molding die - Google Patents

Abstract

When compression molding is performed continuously, lumps of molten synthetic resin (drops), which are supplied by extrusion, are continuously, accurately, and rapidly inserted into plurality of compression molding dies which are rotatingly movable. A method and device for continuously supplying drops into female moldings which are rotatingly movable for manufacturing moldings, wherein synthetic resin in molten condition extruded from an extrusion opening is cut by a cutter attached to a holding mechanism to form the molten resin into drops in a determined quantity, the drops are held and conveyed by the holding mechanism, and the drops are forcibly inserted and supplied into the concaves of the female moldings. At that time the holding mechanism on the rotary-and movable type drop supply is made to approach the rotating molding die and the rotation path of the holding mechanism is made to overlap with that of the molding die within a determined area to make the movement of the holding mechanisms follow that of the molding die.

Description

Force to insert the method and apparatus of shaping former recess with dripping thing

The application's denomination of invention that to be Toyo Seikan Kaisha Ltd proposed on 07 13rd, 2004 is the dividing an application of application of PCT/JP2004/010263 for " force to insert the method for dripping thing and device and molding die follow-up type to compressing forming machine and drip thing supply method and device ", application number.

Technical field

The present invention relates to will be as the method and the device that thing (De ロ Star プ) (the fusion block of forming synthetic resin material) is supplied with continuously to forming metal mould that drip of moulding material in the compressing forming machine of synthetic resin, specifically relate to drip thing supply method and device, this thing supply method and device are when carrying out progressive forming by rotary compressing forming machine to the preform of synthetic resin container shaping usefulness etc., and the thing that drips that is used for the molten condition that will squeeze out from extrusion die accurately and is promptly supplied with in the female die cavity (former recess) of compressing forming machine continuously.

Background technology

Plastic containers are because of lightweight, economy and the formability and the transparency etc. are in good graces in daily life and production easily, wherein, the mylar container that is widely used as the container of daily drink and food etc. particularly, especially the container that is shaped by PET (PET) has carried out special improvement at aspects such as hear resistance and resistance to pressure and fragrance retentivities recently, container demand as cold drink and hobby beverage increases considerably, recently especially as carrying the small containers of usefulness and heated beverage with very popular.

Like this very important with container as drink and food is the synthetic resin container of representative with the PET, usually utilize blow-moulding process to make efficiently, that is, in forming metal mould, fluid (there is round-ended cylinder shape moulding material to the preform of prior formation; Parison) be blown into expansion-molded.

Preform as the preformed articles of plastic containers, mainly utilize a plurality of metal patterns to be shaped at present by the injection mould forming process, carry out blow molding then, yet in order to reduce the price that makes building mortion and to enhance productivity or to cryogenic forming transfer etc., better manufacture method waits in expectation.

On the other hand, lower with respect to prices such as injection mould forming machines and can lower temperature ground be shaped building mortion, existing compressing forming machine, but having can not the quantity-produced shortcoming, as countermeasure to this shortcoming, in order to improve productivity, to enhance productivity, exploitation has been adopted a plurality of forming metal moulds has been installed in rotary-type compressing forming machine on the rotating circular disk) (rotary movable type compressing forming machine (for example, with reference to Japanese kokai publication sho 60-245517 communique).

In the shaping of this preform, make efficient in order further to improve, developed when utilizing compression forming method to carry out the preform shaping, supply with and based on the manufacture method (with reference to TOHKEMY 2000-25729 communique and TOHKEMY 2000-108127 communique) of rotary compressing forming machine based on the rotary material of extrusion, utilize the rotary material of extrusion to supply with and rotary compressing forming machine by employing, make production efficiency that the raising of leap arranged, recently, in preform is made, be subjected to great attention based on the forming process of pushing compression molding.

Carry out the building mortion of this preform forming process, all extraordinary building mortion aspect economy and the production efficiency, but the continuous material that thing packs into rapidly and accurately in the female die cavity of the compression molding device that rotation moves that drips that need carry out the molten condition that will squeeze out from extrusion die is supplied with (insert and drip a thing), if inaccuracy, then a part thing overflows to the cavity outside, can not obtain accurate preform.

Therefore, the continuous supply of dripping thing more rapidly and is accurately inserted, in the continuous process units of the preform that compression formation machine carries out, become important problem, but to address this problem is that the technological improvement of purpose does not almost have, and has only delivered dripping thing and has fallen the improved device (with reference to TOHKEMY 2000-280248 communique) of the synthetic resin guide of the inversed taper platform shape that a setting has guide opening.

As mentioned above, at the building mortion that is used for synthetic resin container is carried out the preform of blow molding, for the price that reduces building mortion and enhance productivity, perhaps to cryogenic forming transfer etc., and adopt the rotary material utilize extrusion to supply with and during the manufacturing installation of rotary compressing forming machine, to supply with (dripping thing inserts) rapidly and accurately in the female die cavity of the compression molding device that rotation is moved continuously be very important to the thing that drips of the molten condition that will squeeze out from extrusion die, in the present invention, be used for more accurately with exploitation and promptly carry out the problem that this technology of supplying with continuously will solve as the present invention.

Summary of the invention

In the rotary material supply of in above-mentioned patent documentation, delivering that utilizes extrusion and the preform building mortion of rotary compressing forming machine, basically the thing that drips of the molten condition that squeezes out from extrusion die can be inserted in the former recess of the compression molding device that rotation is moved effectively, but under the less situation of the difference of the internal diameter of maximum outside diameter that drips thing and former recess, when perhaps accelerate dripping the translational speed of thing maintaining body etc., have and drip the tendency that thing falls from the desired location displacement of former recess, evolutionary approach by the synthetic resin guide that the inversed taper platform shape is set in the above-mentioned patent documentation can address this problem basically.

Inventors of the present invention, even under the littler situation of the difference of the internal diameter of maximum outside diameter that drips thing and former recess, even perhaps when accelerating to drip the translational speed of thing maintaining body, even also have under the situations about circulating of accelerating to be shaped such as the rotary speed that improves rotary compressing forming machine, a thing also can not fallen from the desired location displacement of former recess, can be more accurately and promptly drip the insertion of thing, and be conceived to develop further improvement technology, supply with from the formation of dripping thing, what drip the maintaining body of thing or drip thing falls the insertion device, many-sides such as shaping circulation search out a remedy, think deeply from multiple angles repeatedly, the research of experimentizing property constantly etc., having invented finally can be more accurately and promptly drip the method that thing inserts.

In this new method, when inventors study with regard to the insertion method that falls of dripping thing, studied to make and dripped falling of thing and do not rely on existing natural and fall, but to its method of exerting one's influence, to drip a thing be not that nature falls but forces and falls if obtained making, then forcibly determine the direction that falls, can more accurate and promptly will drip the new understanding that thing inserts to the former recess, specifically be to adopt following method, promptly, removing maintaining body to dripping the maintenance of thing, when a thing is fallen, maintaining body is descended rapidly or constant speed decline, utilize acceleration and inertia rule etc. to make and fall with dripping thing acceleration or constant speed, this has formed the first basic inscape of the present invention, in the method, because the drive-type lifting tool that only maintaining body is set get final product, so optional equipment not only simply but also economy.

And, inventors also consider the track that has coincidence in this new method, promptly, the rotary movable type that coincidence has a plurality of maintaining bodies drips the rotational trajectory that thing is supplied with body, with track with the rotational trajectory of taking turns the rotary movable type that changes a plurality of metal patterns in the compressing forming machine, if a thing is fallen, then can more accurately insert and drip thing, and, inventors are further developing the improvement technology that is used for more accurately and drips the supply of thing rapidly simply, in the process of investigating repeatedly and testing, give careful consideration, obtained the following conduct opinion of complete unexpected innovative technology up to now, finished the present invention, promptly, adopt and overlap this rotational trajectory, make the method with the mobile servo-actuated of shaping former of moving of maintaining body, drip thing more accurately and to insert rapidly be very effective to making, by based on this method of unexpected new idea so far, dripping the thing maintaining body can be from the desired location dislocation of former recess, but therewith, even for example stagger in time a little in the position of maintaining body and former on the rotational trajectory of unanimity, also can make the mobile servo-actuated of the mobile and shaping former of maintaining body, in the time of rotational trajectory unanimity, when the position consistency of maintaining body and former, if to the maintenance of dripping thing a thing is fallen by removing maintaining body, then can be more complete, accurately realize dripping the insertion of thing, and, because this track has the time of coincidence of abundant (abundance), therefore, also can further guarantee to drip the accuracy that thing inserts from this respect.

Realize rotation motion track consistent of the above-mentioned maintaining body retaining part of thing (more specifically be drip) and metal pattern, make moving of maintaining body (perhaps opposite with the mobile servo-actuated of shaping former, make the mobile servo-actuated of the mobile and maintaining body of shaping former), make the concrete grammar that passes through position consistency or basically identical with former of falling a little that drips thing that the maintenance of dripping thing is formed by open maintaining body, it is the second basic inscape of the present invention, by this new method, even under the littler situation of the difference in internal diameters of maximum outside diameter that drips thing and former recess, or when making the translational speed of dripping the thing maintaining body faster, dripping thing can not fall from the desired location displacement of former recess yet, can be complete by simple method, accurately and promptly realize dripping the insertion of thing, and, even in order to enhance productivity, and improve rotary speed of rotary compressing forming machine etc., the circulation that accelerate to be shaped also can be fully or almost completely accurately drip the insertion of thing.

And, more specifically be, in order to make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, and the auxiliary moving devices such as swing of the flexible and maintaining body of setting maintaining body radius of turn or maintaining body installing component, and its mobile controller is set, and, rotary movable type maintaining body is being moved on the track of the off-centre operation different with circular orbit, utilization limits the whole bag of tricks such as this track by restriction guiding piece etc., has formed following related invention.

In above-mentioned, with regard to production process of the present invention and basic formation of the present invention and feature, briefly describe the present invention, therefore, make a general survey of whole the present invention at this, the present invention is made of following invention unit group, and 1～4 invention is basic invention, and the invention beyond it is to specialize and embodimentization inventing substantially.In addition, the whole invention group of summary 1～19 is called " the present invention ".

1. one kind will drip the method that thing forces to insert shaping former recess, in compressing forming machine, the thing that drips of moulding material is forced to insert in shaping former recess, it is characterized in that, the synthetic resin of the molten condition that will extrude from the extruding peristome that is formed on the extrusion die front end, keep by maintaining body and the parting tool that is positioned on the synthetic resin receiving position relative with extrusion die, cut off or cut off, keep, form the quantitative thing that drips, keep carrying a thing with maintaining body, will simultaneously remove maintenance at the thing that the drain position above the shaping former keeps, one towards shaping former recess pressure insertion, supply with.

2. one kind is used for dripping the thing supply method with dripping thing to the continuous molding die follow-up type of supplying with of movable forming metal mould, in compressing forming machine, the thing that drips of moulding material is supplied with continuously to movable forming metal mould, it is characterized in that, making rotary movable type drip thing, to supply with the forming metal mould of maintaining body that drips thing on the body and rotation approaching, in certain scope, make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated with maintaining body of moving of forming metal mould, on the rotational trajectory of unanimity or basically identical, the maintenance of dripping thing that releasing keeps carrying to maintaining body is inserted dripping the recess of thing to the shaping former, supply with.

3. one kind will drip the device that thing forces to insert shaping former recess, in compressing forming machine, the thing that drips of moulding material is forced to insert in shaping former recess, it is characterized in that having: be used for making the forming synthetic resin material be in softening molten condition and with its pressing mechanism of extruding by the heating plasticization; Be formed on the extruding peristome of the extrusion die front end that is attached on the pressing mechanism; Be used to keep the molten condition that squeezes out from the extruding peristome synthetic resin, be positioned at the maintaining body on the synthetic resin receiving position relative with extrusion die; Be used to cut off synthetic resin, form the quantitative parting tool that drips thing; Be transported to the drain position of shaping former top with dripping thing, one side will keep drip thing remove keep one towards shaping former recess force to insert, the mechanism of supply.

4. one kind is used for dripping the thing feedway with dripping thing to the continuous molding die follow-up type of supplying with of movable forming metal mould, in compressing forming machine, the thing that drips of moulding material is supplied with continuously to movable forming metal mould, it is characterized in that, make rotary movable type drip the forming metal mould that thing is supplied with the approaching rotation of maintaining body on the body, in certain scope, make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated with maintaining body of moving of forming metal mould, on the rotational trajectory of unanimity or basically identical, remove maintaining body is kept the maintenance of dripping thing of carrying, will drip the recess insertion of thing to the shaping former, supply with.

5. drip thing supply method or device as 2 or 4 described molding die follow-up types, it is characterized in that, when on the rotational trajectory of unanimity or basically identical, removing the maintenance that maintaining body is kept the thing carried, to drip thing insert to the recess of shaping former, when supplying with, on the drain position above the shaping former, will keep drip a thing simultaneously remove keep one side forcibly to shaping former recess insert, supply.

6. each as in 1 to 5 is described will to drip that thing inserts or the method or the device of supply continuously in shaping former recess, it is characterized in that, the rotary movable type that use has a plurality of maintaining bodies drips thing supply body, compressing forming machine is a rotary compressing forming machine, and this rotary compressing forming machine uses the rotary movable type with a plurality of metal patterns that are made of the shaping matched molds.

7. each as in 1,3,5,6 is described will to drip method or device that thing force to insert to shaping former recess, it is characterized in that, to drip thing and force the method inserted to shaping former recess, be to fall method by applying acceleration or applying the pressure that constant speed based on inertia descends the maintaining body that keeps dripping thing.

8. as the 7 described method or the devices that will drip thing, it is characterized in that,, be provided with elevator in order to make the maintaining body decline that keeps dripping thing by the constant speed that applies acceleration or apply based on inertia to shaping former recess pressure insertion.

As 2,4～8 in each described molding die follow-up type drip thing supply method or device, it is characterized in that, the rotational trajectory of movable forming metal mould is a circular orbit, the molding die follow-up type movable type drips thing supplies with maintaining body on the body, can retractable moves or is rotated motion with the radius of turn of retractable.

As 2,4～9 in each described molding die follow-up type drip thing supply method or device, it is characterized in that, make rotary movable type drip thing and supply with maintaining body one side on the body and drip thing with respect to rotary movable type to supply with the normal slope of body certain angle, one side approaching with the forming metal mould of rotation, make the consistent or basically identical of rotational trajectory of maintaining body and forming metal mould within the specific limits.

11. as 2, each described molding die follow-up type drips thing supply method or device in 4～10, it is characterized in that, rotary movable type drips the maintaining body on the thing supply body, in case maintaining body rotation, then drip the external cam of thing supply by being arranged on rotary movable type, with with the incorporate cam follower of maintaining body, it is approaching with the forming metal mould of rotation that one side moves one side along guiding piece, in certain scope, make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

12. as 11 described molding die follow-up types drip thing supply method or device, it is characterized in that, maintaining body with the forming metal mould of rotation near the time, further swing is with the position follower of forming metal mould.

13. as 11 or 12 described molding die follow-up types drip thing supply method or device, it is characterized in that, maintaining body is supported on the supporter, supporter is applied power towards the outside of the wheel that maintaining body is installed, the quilt reinforcing also is pressed, cam follower is set at and the cam butt, not outstanding to the more lateral, supporter is set at respect to the curve of cam and normal has certain angle, perhaps along with the guiding piece turnover that can be changed to best angle, the supporter one side moves along guiding piece, one side makes maintaining body and metal pattern butt as required, approaching with the forming metal mould of rotation, in certain scope, make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

14. as 2, each described molding die follow-up type drips thing supply method or device in 4～8, it is characterized in that, the maintaining body of rotary movable type is supported on the fixed part that moves on the track of off-centre operation, fixed part with the approaching certain limit of forming metal mould of rotation in, by limiting motion track by restriction guiding piece on the track that is arranged on fixed part or cam, make maintaining body or basically identical consistent with this with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

15. as 14 described molding die follow-up types drip thing supply method or device, it is characterized in that, the maintaining body of rotation movable type, support by the telescoping mechanism that is arranged on the medium in the flexible gearing, by comprising the concentric circular orbit part of being moved with movable forming metal mould of circular orbit at least, in concentric circular orbit scope, maintaining body or basically identical consistent with the track of forming metal mould.

16. as 15 described molding die follow-up types drip thing supply method or device, it is characterized in that, maintaining body is supported on the supporter, supporter is applied power towards the outside of the wheel that maintaining body is installed, cam follower is set at and the cam butt, not outstanding to the more lateral, supporter is along with guiding piece passes in and out, the supporter one side moves along guiding piece, one side is approaching with the forming metal mould of rotation, in certain scope, make maintaining body or basically identical consistent, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body with the rotational trajectory of forming metal mould.

17. as each the described molding die follow-up type in 14～16 drips thing supply method or device, it is characterized in that, and along the track of off-centre operation the track of level or vertical rotation.

18. as each the described molding die follow-up type in 2,4～17 drips thing supply method or device, it is characterized in that, when the motion track of maintaining body is consistent with the rotational trajectory of the forming metal mould of rotation, make the consistent control of translational speed of maintaining body and forming metal mould.

19. as in 1～18 each is described drips the method or the device of thing supply to forming metal mould, it is characterized in that the formed products that is shaped in compressing forming machine is a preform.

Description of drawings

Fig. 1 is the simple vertical view of the preferred implementation of the formation system that constitutes according to the present invention of particular instantiation.

Fig. 2 is the simple vertical view that amplifies the part of formation system of the present invention.

The outline elevation of the structure division that Fig. 3 is the expression maintenance that forms of the present invention thing, cut off and fall.

Fig. 4 represents the approximate vertical view that maintaining body of the present invention is consistent with the rotational trajectory of forming metal mould with geometry.

Fig. 5 A～F dynamically expression carries out an example of maintaining body of the present invention and the consistent device of the rotational trajectory of forming metal mould, is the summary ideograph of six one group animation.

Fig. 6 is the structure approximate vertical view of the expression drawing mechanism that is formed by extension spring of the present invention.

Fig. 7 is the approximate vertical view of representing utilization swing effect of the present invention, making the maintaining body example consistent with the rotational trajectory of forming metal mould.

Fig. 8 is that expression utilization of the present invention is along the track of off-centre operation with limit guiding piece, make the approximate vertical view of the maintaining body example consistent with the rotational trajectory of forming metal mould.

Fig. 9 is expression utilization of the present invention along the track of off-centre operation, makes the approximate vertical view of the maintaining body example consistent with the rotational trajectory of forming metal mould.

Figure 10 is the approximate vertical view of expression as the open and close type maintaining body of the example of maintaining body of the present invention.

Figure 11 is the maintaining body example consistent with the rotational trajectory of forming metal mould that make of the present invention, that is, and and with pack into the approximate vertical view of the example in the same wheel of maintaining body and metal pattern.

Figure 12 is the maintaining body example consistent with the rotational trajectory of forming metal mould that make of the present invention, that is, and and with pack into the approximate vertical view of the example in the same wheel of maintaining body and metal pattern.

The specific embodiment

Below, one side is with reference to each accompanying drawing of the representational embodiment of expression, and one side is preferred embodiment carried out concrete detailed explanation with regard to of the present invention.

(1) formation system of the present invention

Of the present inventionly will drip thing accurately and promptly supply with the method and apparatus of the formation system that inserts continuously, for example be preferably used in the formation preform, the blow molding manufacturing container of this preform after etc. by compression molding to the former of compressing forming machine.

Fundamental system of the present invention is to force the system of insertion with dripping thing in shaping former recess, it is in compressing forming machine, the thing that drips that forms material forcibly is inserted into method and apparatus in the shaping former recess, the synthetic resin that it is characterized in that the molten condition that will squeeze out from the extruding peristome of the front end that is formed on extrusion die keeps cutting off or cuts off and keep by being positioned at maintaining body on the synthetic resin receiving position relative with extrusion die and parting tool, form the quantitative thing that drips, maintaining body keeps carrying a thing, and a thing that will keep on the drain position above the shaping former is simultaneously removed maintenance one and forced to insert supply towards shaping former recess.

At this, so-called maintenance is not only with maintaining body and is clamped, comprise also by what drip that thing produces with the friction of the retaining part of maintaining body preventing to fall ability that this centrifugal force that prevents rotary press (ロ-タ リ-) when at a high speed the rotating generation of the ability that falls by having maintaining body more effectively plays a role.

And, so-called pressure comprises and is used for forcing to apply the method for initial velocity to dripping thing, or following method, promptly, for the friction of the retaining part that overcomes maintaining body, make and drip a thing and fall easily, slide easily and maintaining body vibration is made drip a thing, or leave from circle by the track that makes the uniform circular motion that maintaining body carries out and to remove centrifugal force, make and drip a thing and fall easily.

As forcing to apply the method for initial velocity, can enumerate by the acceleration decline of maintaining body and to dripping a thing and apply acceleration, or the inertia that utilizes that is undertaken by the constant speed decline of maintaining body applies constant speed to dripping thing.

Fig. 1 is with the structure of whole invention of the present invention and effect, promptly, the preferred implementation of the formation system of the preform that constitutes according to the present invention (the preform system as the blow molding that is used for synthetic resin container uses) is carried out the simple vertical view of particular instantiation, in the present invention, supply with the whole system of inserting a thing for a plurality of (preferably many) metal patterns in compressing forming machine, show each composed component (constituent apparatus).

Formation system among this figure has adopted the higher suitable rotary system of production efficiency, drips thing based on extruder 10, rotary movable type and supplies with body 11 and rotary compressing forming machine (rotary movable type) 12.Extruder 10 has extrusion die 13 and extruding peristome 14, and rotary movable type drips thing supply body 11 and equally spaced has a plurality of thing maintaining bodies 15 at its periphery, and rotary compressing forming machine equally spaced is provided with a plurality of forming metal moulds 16 at its periphery.Preform after discharge machine 17 will be shaped is discharged, and finishes to be shaped.

Fig. 2 is the simple vertical view of a part that amplifies the formation system of above-mentioned Fig. 1, amplify the rotary movable type of diagram and drip the structure that thing is supplied with body 20 and rotary compressing forming machine (rotary movable type) 21, represent the coincidence of its rotational trajectory, has following coincidence track, promptly, the rotary movable type that is provided with a plurality of maintaining bodies 22 drips the rotational trajectory that thing is supplied with body 20, with the coincidence track of the rotational trajectory of the rotary movable metal pattern that is provided with a plurality of metal patterns 28 in the rotary compressing forming machine 21, drip the situation that thing falls and illustrate on the track of this coincidence, making.

Supply with on the body 20 at the rotary droplet thing, on the Zhou Fangxiang of its periphery, equally spaced be provided with a plurality of maintaining bodies 22, these mechanisms are made of setting tool (anchor clamps) 24 and press tool (push rod) 25, set up the parting tool (cutting knife) 23 of quantitative cut-out molten resin on each maintaining body 22.

On the receiving position 26 of molten resin, coming the molten resin of self compaction peristome to be cut off instrument 23 quantitatively cuts off, maintaining body 22 molten resin (dripping thing) that it is block receives, clamp a thing and maintenance with setting tool (anchor clamps) 24 and press tool (push rod) 25, the maintaining body 22 that is keeping dripping thing is rotated conveying.

On rotary movable type drips the rotational trajectory that thing supplies with body 20 and the track that the rotational trajectory of rotary movable metal pattern 21 overlaps, setting makes drips the thing lowering position 27 that thing falls, press tool 25 retreats, removes dripping the maintenance of thing on this position, preferably forcibly makes to drip thing and fall, will drip thing and insert in the former recess (cavity) in the forming metal mould 28.

Maintaining body simultaneously carries out suitable flexible, rotation one side and moves, and realizes that the servo-actuated with the metal pattern position of design etc. is consistent, with more accurately with the forming metal mould servo-actuated.

(2) drip the formation of thing and maintaining body thereof and supply with to former and to drip a thing

In Fig. 1, the forming synthetic resin material that is heated fusion is discharged by the body from extruder 10 by extruder 10, and the synthetic resin of molten condition is carried by the resin stream to extrusion die 13 by gear pump, extrudes from extruding peristome 14.By what extrude from extruding peristome 14 is the thermoplastic synthetic resin of the molten condition of representative with the PET, cut off by the parting tool that is attached on the maintaining body, downcut, form the thing that drips of fusion bulk from extruding opening 14, on the synthetic resin receiving position relative with extrusion die, this thing is set at rotary movable type and drips thing and supply with the setting tool and the compression tool clamping of a plurality of maintaining bodies 15 on the body 11, keep by maintaining body.

Dripping thing is carried mobile with maintained state to the former recess, remove maintenance, fall at this, preferably fall acceleration etc. and make it mandatory and fall, accurately supply with continuously in the former recess of a plurality of forming metal moulds 16 on being arranged on rotary compressing forming machine 12 and insert by applying.

According to Fig. 2 as mentioned above, maintaining body is formed by setting tool (anchor clamps) and the movable compression tool (push rod) that is oppositely arranged with it, move molten resin by being pressed on the setting tool, keeping molten resin by advancing of compression tool, and carry towards drain position, a thing that will on the drain position above the shaping former, keep, one side moves to remove by retreating of compression tool and keeps one side that it is fallen, and its pressure is fallen, and inserts and supplies with to shaping former recess.

Drip the maintaining body of thing, move towards the thing drain position that drips relative with the shaping former from the synthetic resin receiving position relative with extrusion die; The shaping former with moving synchronously of maintaining body, is carried to this drain position.

Fig. 3 is to dripping the maintaining body of thing, will drip the structure division that the maintenance of thing and cut-out and pressure fall and the outline elevation that preferred embodiment carries out particular instantiation of effect.

By the maintaining body 32 that setting tool 33 and compression tool 34 constitute, be positioned at the position relative with the extruding peristome 31 of extrusion die 30, on maintaining body 32, set up parting tool 35, maintaining body 32 is fixed on the elevator 36.The forward-reverse of compression tool 34 is undertaken by the driving that cam 38 is advanced in front and back.The 39th, line slideway, elevator 36 moves up and down along with the cam follower 382 that moves along moving cam 381 up and down.

The parting tool 35 that the molten resin of extruding from the extruding peristome 31 of the die head 30 of extruder is horizontally set on maintaining body 32 tops quantitatively cuts off, forms and drips a thing 37, in the front and back or the while of cut-out, the setting tool 33 and the compression tool 34 that are held mechanism 32 are clamped, are kept, drip thing and be transported to the shaping former, by by to advance retreating of compression tool 34 that retreating of cam 38 cause mobile dripping front and back on the thing lowering position, drip thing 37 one sides and be disengaged its maintenance, simultaneously be forced to fall, supply with to shaping former recess.

In order to force to fall, remove maintaining body to the maintenance of dripping thing, make and drip a thing when falling, can adopt maintaining body to be descended rapidly or constant speed descends, utilizes acceleration and inertia rule etc. to apply and quicken or method that constant speed etc. falls it to dripping thing.

And, as shown in figure 10,, also can be to utilize manipulator will drip the form that thing encases from both sides for keeping tool mechanism.

In addition, if the internal diameter that makes manipulator this moment greater than the external diameter that drips thing or identical, then can will not drip thing because of clamping and squeeze broken, therefore more satisfactory.At this moment, drip the centrifugal force that the rotation of the rotary press of thing by having manipulator produces and contact, prevent to fall and keep by contact friction with manipulator with manipulator.In addition, consider since manipulator contact with the part of dripping thing generation to the damage of a thing or the influence of distortion, preferably make the shape of manipulator coincide, strengthen contact area with the shape of dripping thing, if for example drip thing is cylindrical, and then manipulator preferably also forms identical or bigger a little with a thing cylindric.

And, in order to remove the maintenance that this centrifugal force forms, apply vibration to manipulator, the friction of rest power that will act between a thing and manipulator is converted to dynamic friction, makes it easy slip, with this it is fallen easily, or drip the thing feed system by importing die follow-up type described later, and when the metal pattern servo-actuated, change centrifugal force, and reduce the design of centrifugal force, a thing is fallen.And, also can make maintaining body force to descend, forcibly remove maintenance.

In addition, as described later, drip thing and supply with on the maintaining body 32 on the body being arranged at rotary movable type, preferred mode is shown in Fig. 5 A, set up cam follower (cam follower wheel) 54, drip thing and supply with cam 55 rotations on the body, to inner peripheral surface that should cam along being arranged on rotary movable type, by guiding piece 53 guiding maintaining bodies 52 and displacements, make maintaining body consistent near scope with the rotational trajectory 56 of molding metal mold 51 certain.

About dripping the insertion method that falls of thing, fall if not falling naturally but forcing, then forcibly determine to fall direction, can be more accurately and promptly drip the insertion of thing to the former recess.This method is as the inscape that forms first essential characteristic of the present invention.

As the concrete grammar of forcing to fall, though can consider to drip the method that thing pushes with bar etc., but because additional mechanism providing additional operation complexity, price height in this case, therefore remove maintaining body to the maintenance of dripping thing, make and drip a thing when falling, maintaining body is descended rapidly or constant speed decline, utilize acceleration and inertia rule etc. to dripping method the best that thing applies acceleration or constant speed, it is fallen.In the method, get final product owing to only set up the drive-type lifting tool of maintaining body, so optional equipment is simple, economical.

By this new addition method, even under the less situation of the difference of the internal diameter of maximum outside diameter that drips thing and former recess, when the translational speed of dripping the thing maintaining body is increased, dripping thing can be from the desired location displacement of former recess yet, fall, can be more accurately and promptly drip the insertion of thing, and, the block (dripping thing) of forming synthetic resin material that also can prevent the molten condition extruded from extrusion die is because its viscosity and attached on the maintaining body, be difficult to fall, owing to can fall unobstructedly, therefore a part thing can not adhere to as sticky object, be accumulated on the maintenance instrument, perhaps, also can improve the rotary speed of rotary compressing forming machine etc., accelerate the circulation that is shaped, enhance productivity.

Freely fall in the method existing, owing to drip the viscosity of the molten resin self in the thing, viscosity composition or the polymer that perhaps contains in the molten resin adheres to, is accumulated on the contact portion of maintaining body, and make the slip of dripping thing worsen, cause fall bad, therefore, need regularly stop the part of forming machine, cleaning maintaining body etc., but in the present invention, can reduce significantly and need follow the frequency that stops forming machine and carry out the parts cleaning.

And, in the present invention, owing to when a thing pressure is fallen, the compression tool of maintaining body is retreated, removes maintenance to a thing, therefore also have will fall downwards drip thing from the effect that the setting tool and the compression tool of maintaining body peels, fall and become more smooth and easy.

(3) forming metal mould and compression molding

In order to enhance productivity, drip thing supply unit and compressing forming machine, the rotary movable type of employing has a plurality of (preferably many) maintaining body drips the rotary movable type that thing is supplied with body and had a plurality of (preferably many) metal patterns in the rotary compressing forming machine.

Forming metal mould is by the former with recess (cavity) and have the formpiston formation of the type heart, to drip after thing supplies with, is inserted in the former recess, the decline by formpiston or the rising of former are to dripping a thing pressurization compacting, under suitable forming temperature and pressure, be configured as needed formed products, for example preform (parison).

In the circulation that is shaped, the maintaining body of other rotations drip successively thing maintenance, cut off and fall, receive a thing successively by other metal patterns in the movable type of rotation, former rising (or formpiston decline), carry out continuous press molding jointly with the type heart of formpiston, formed products after discharge being shaped by the discharge machine is finished the shaping of preform etc.

(4) die follow-up type drips the thing feed system

Die follow-up type of the present invention drips the thing feed system, be to be used for dripping the thing feed system to the continuous molding die follow-up type of supplying with of movable forming metal mould with dripping thing, moulding material in the compressing forming machine dripped thing in method and device that movable forming metal mould is supplied with continuously, it is characterized in that, the forming metal mould that drips thing maintaining body and rotation that rotary movable type is dripped on the thing supply body is approaching, in certain scope, make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated with maintaining body of moving of forming metal mould, on the rotational trajectory of unanimity or basically identical, remove the maintenance of dripping thing of maintaining body to keeping carrying, insert supply with dripping the recess of thing to the shaping former.

Promptly, following concrete grammar is the basic constituent element of second feature of the present invention: realize that rotary movable type drips a plurality of maintaining bodies (dripping the thing retaining part) on the thing supply body, the rotation motion track that changes a plurality of forming metal moulds (former) on the rotary movable type in the compressing forming machine with wheel is consistent, has the track that the rotational trajectory of maintaining body overlaps with the rotational trajectory of metal pattern, on the track of this coincidence, make moving of maintaining body (or opposite with the mobile servo-actuated of forming metal mould, make the mobile servo-actuated of the mobile and maintaining body of forming metal mould), make the position consistency of passing through with metal pattern of falling a little of dripping thing that the maintenance of dripping thing is formed by open maintaining body, or basically identical.

In the method, on the maintaining body rotational trajectory consistent with metal pattern, even for example stagger in time a little in the position of maintaining body and metal pattern, also can make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, in the time of rotational trajectory unanimity, when the position consistency of maintaining body and metal pattern, by open maintaining body falling of thing dripped in the maintenance of dripping thing, can accurately realize dripping the insertion of thing completely or almost completely, and, make a thing fall under the situation of insertion to the former recess on the track of this coincidence, fall insertion in the time that can overlap in the position of maintaining body and former, owing to the time of abundant (abundance) is arranged, therefore, also can further guarantee to drip the accuracy that thing inserts from this respect.And, can adjust the translational speed of maintaining body and the translational speed of forming metal mould, make moving and the mobile servo-actuated of forming metal mould (or opposite, make the mobile servo-actuated of the mobile and maintaining body of forming metal mould) of maintaining body.

By this new method, more effective when falling method and use simultaneously with pressure, even the maximum outside diameter that drips thing and the difference of the internal diameter of former recess with compare very little situation usually under, perhaps the translational speed of the maintaining body that drips thing with compare usually when very big, dripping thing can not fall from the desired location displacement of former recess yet, can be by simple method, fully or almost entirely and promptly realize dripping the insertion of thing, and, in order to enhance productivity, even improve the rotary speed of rotary compressing forming machine etc., accelerate the circulation that is shaped, also can accurately drip the insertion of thing completely or almost completely.

Supply with maintaining body (dripping the thing retaining part) on the body as making rotary movable type drip thing, the consistent concrete grammar of rotational trajectory with forming metal mould (former) on the rotary movable type in the rotary compressing forming machine, on behalf of example, it be, make maintaining body one side drip thing and supply with the certain angle of normal slope on the body with respect to rotary movable type, one side is approaching with the forming metal mould of rotation, maintaining body is got final product certain near scope with the rotational trajectory of forming metal mould is consistent, according to Design of device and based on the result of study of experiment, with respect to certain angle initialization of this normal 0～20 ° the time rotational trajectory can the longest interval in basically identical.

At this, the position of the central shaft of cylindric thing when basically identical is meant and keep drips thing with maintaining body is preferably in the 2mm with the skew of the central shaft that the bottom tube-like metal pattern is arranged.

The situation of the unanimity of this rotational trajectory is represented with geometry in the approximate vertical view of Fig. 4, in illustrated certain limit, by modal representation and the maintaining body that moves successively and the rotation motion track basically identical of forming metal mould.

On the rotational trajectory of unanimity, by adjusting translational speed etc., make moving of this maintaining body (or opposite with the mobile servo-actuated of forming metal mould, make the mobile servo-actuated of the mobile and maintaining body of forming metal mould), when the position consistency of maintaining body (dripping the thing retaining part) and forming metal mould (former) (in the servo-actuated interval in the drawings), bring into play the thing that drips that maintaining body is kept carrying and remove the effect that keeps, inserts supply to the recess of forming metal mould.

In addition, relevant with Fig. 4, also can adopt the mode of following maintaining body and metal pattern servo-actuated, promptly, the central shaft that rotatablely moves of maintaining body is set on the identical axis of the central shaft of the circular orbit that is moved with movable forming metal mould, perhaps on the optional position of central shaft arrangement in the circular orbit that movable forming metal mould moved that rotatablely move of maintaining body.

(5) servo-actuated of moving of the mobile and forming metal mould of maintaining body

For inserting to the maintenance of a thing, to the former supply, open maintaining body dripping a thing, and the rotation that makes maintaining body is moved with the mobile servo-actuated of the rotation of forming metal mould, when making the position consistency of metal pattern and maintaining body, (method) in the following ways, promptly, has the track that the rotational trajectory of maintaining body overlaps with the rotational trajectory of metal pattern, make the mobile servo-actuated with forming metal mould of moving of maintaining body on the track of this coincidence, select the moment of the position consistency of maintaining body and metal pattern; Perhaps on the rotational trajectory of maintaining body and track that the rotational trajectory of metal pattern overlaps, make the translational speed of maintaining body and metal pattern consistent; Also have, adjust the maintaining body on the track that overlaps translational speed, make the position consistency of maintaining body and metal pattern etc.(opposite, it also is same making under the situation with the mobile servo-actuated of maintaining body of moving of forming metal mould.)

(6) make the mechanism of the rotational trajectory basically identical of maintaining body and forming metal mould

In order to form the track that the rotational trajectory that makes maintaining body overlaps with the rotational trajectory of forming metal mould, one side makes maintaining body drip the certain angle of normal slope that thing is supplied with body with respect to rotary movable type, one side is near the metal pattern of rotation, to make the maintaining body representational mechanism (actuation gear) consistent with the rotational trajectory of metal pattern near scope be following mechanism certain, promptly, basically, dripping thing at rotary movable type supplies with in the maintaining body on the body, the maintaining body rotation, by be fixedly installed on rotary movable type drip thing supply with external cam and with the incorporate cam follower of maintaining body, moved along guiding piece, forming metal mould near rotation, in certain scope, make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

As its main example, undertaken by following effect, promptly, be attached to the cam follower (cam follower wheel) on the maintaining body, rotate along cam (preferably complete all cams), to side face that should the cam inner face, maintaining body is directed the part (guiding tool of the periodic displacement campaign of transmission, integrated slidably with maintaining body, the normal that drips thing supply body with respect to rotary movable type is obliquely installed with certain angle) guiding, displacement, by this displacement, make the maintaining body one side drip the certain angle of normal slope that thing is supplied with body with respect to rotary movable type, one side is near the forming metal mould of rotation, make maintaining body consistent certain near scope, make the mobile servo-actuated with forming metal mould of moving almost completely of maintaining body with the rotational trajectory of forming metal mould.

Be used to understand the plan of transposition as the mechanism of the main example of the above-mentioned rotational trajectory basically identical that makes maintaining body and forming metal mould, 6 a series of animations with A～F in Fig. 5 are represented.

In Fig. 5 A, the 50th, the supporter of maintaining body 52, the 51st, forming metal mould, the 53rd, with the supporter 50 incorporate guiding pieces (line slideway) of maintaining body 52, the supporter 50 that makes maintaining body 52 with respect to normal with certain angular movement, the 54th, be attached to the cam follower on the supporter 50, supporter 50 is moved along guiding piece 53 according to the curve of the inner face of cam 55, the 55th, for make be held that mechanism 52 keeps drip thing and metal pattern 51 servo-actuateds, be arranged on rotary movable type and drip thing and supply with complete all cams on the body, the 56th, consistent in certain scope, the scope that maintaining body is consistent with the rotational trajectory of forming metal mould.The interior surface curve of cam 55 is designed to be held the form of dripping thing and metal pattern 51 servo-actuateds that mechanism keeps.

In addition, preferably, supporter 50 is set for by not shown extension spring and is stretched by the outside towards the wheel that a plurality of maintaining bodies 52 are installed, cam follower 54 and the inner peripheral surface butt of cam 55, not outstanding too laterally.Guiding piece 53 turnover that supporter 50 forms certain angle along with curve and normal with respect to cam 55.The structure of the drawing mechanism that extension spring forms as shown in Figure 6.And, in Fig. 6 etc., maintaining body as required with the metal pattern butt, adopt the mode that makes its position consistency effectively.

Dynamically explanation makes the maintaining body mechanism consistent with the rotational trajectory of forming metal mould in Fig. 5 A～F, in Fig. 5 A, maintaining body 52 has a thing retaining part of representing with circle, to drip thing remains on the thing retaining part, simultaneously, supporter 50 incorporate guiding pieces 53 and the cam follower 54 that is attached on the supporter 50 with maintaining body 52, rotate along cam, supporter 50 carries out displacement accordingly with the inner peripheral surface of this cam, and the left side of maintaining body 52 from figure turns clockwise mobile.And maintaining body 52 one side is dripped thing with respect to rotary movable type and is supplied with the certain angle of normal slope on the body, and one side moves the metal pattern 51 of coming near rotation.

The forming metal mould 51 also left side of one side from figure is rotated counterclockwise mobile, one side near maintaining body 52.The rotational trajectory of maintaining body 52 and forming metal mould 51 is represented with white line respectively.

In Fig. 5 B, a thing retaining part and the forming metal mould 51 of maintaining body 52 are very approaching, arrived Fig. 5 C, the thing retaining part that drips of maintaining body 52 overlaps consistent with the position of forming metal mould 51, meanwhile, the cam follower 53 that is attached on the supporter 50 carries out big displacement, supporter 50 is dripped the round center position displacement that thing is supplied with body to rotary movable type, like this, maintaining body 52 is also to equidirectional displacement, shown in Fig. 5 D, make its rotational trajectory consistent with the rotational trajectory of forming metal mould 51.

To Fig. 5 E, make the rotational trajectory of maintaining body (dripping the thing retaining part) 52 consistent from Fig. 5 D with the rotational trajectory of forming metal mould 51.In the interval of this rotational trajectory unanimity, the position basically identical of maintaining body (dripping the thing retaining part) 52 and forming metal mould 51, at this moment, by 52 pairs of maintenances of dripping things of open maintaining body, a thing is fallen, can realize dripping a thing and insert accurately to the former recess of forming metal mould 51.

In the method, on the consistent rotational trajectory of maintaining body 52 and metal pattern 51, even maintaining body 52 staggers with the position of metal pattern 51, mobile servo-actuated at the mobile and metal pattern 51 that makes maintaining body 52, in the time of rotational trajectory unanimity, in the maintaining body 52 and the roughly consistent moment of the position of metal pattern 51, if by 52 pairs of maintenances of dripping thing of open maintaining body, a thing is fallen, then also can realize dripping the insertion of thing fully, on the track of its coincidence, make a thing fall under the situation of insertion to the former recess, go into to get final product at the temporal interpolation that its track overlaps, because the time of abundant (abundance) is arranged, therefore, also can further guarantee to drip the accuracy that thing inserts from this respect.In addition, because from removing the moment of this thing of clamping, thing is actual to fall, enters that the position needs a period of time in the former recess to dripping, and therefore, from this respect, is overlapped and the temporal abundant of acquisition is very important by this track.

After arriving Fig. 5 F, the cam follower 54 that is attached on the supporter does not carry out displacement, guiding piece 53 does not drip the round center position displacement that thing is supplied with body to rotary movable type, like this, maintaining body 52 also finishes to equidirectional displacement, as shown in the figure, its rotational trajectory separates with the rotational trajectory of forming metal mould 51.

(7) make other modes of maintaining body or basically identical consistent with the rotational trajectory of forming metal mould

7-1 utilizes the swing effect

A kind of application scheme example, promptly, additionally in the above-mentioned main example that makes the maintaining body mechanism consistent utilize the swing effect with the rotational trajectory of forming metal mould, be will swing action be attached on the maintaining body, further accurately make the method and apparatus of the position consistency of maintaining body and forming metal mould.

Fig. 7 represents this concrete example, identical with above-mentioned main example, the maintaining body that rotary movable type drips on the thing supply body can move along guiding piece, if maintaining body rotation, then by be fixedly installed on rotary movable type drip thing supply with on the body cam and with the incorporate cam follower of maintaining body, one side moves the forming metal mould of one side near rotation along guiding piece.

And, be that a kind of molding die follow-up type with following feature drips thing supply method and device at this moment, promptly, maintaining body is swung with guiding piece, servo-actuated on the position of forming metal mould, the adjection by swing makes the rotational trajectory of maintaining body and forming metal mould in full accord in certain scope, make moving fully and the mobile servo-actuated of forming metal mould of maintaining body, or make moving fully and the mobile servo-actuated of maintaining body of forming metal mould.

As shown in Figure 7, in transmission drive system (not having diagram) by belt drives or gear drive etc., rotary movable type drips thing when supplying with the wheel of body and being rotated, oscillating roller is driven in rotation in orbit, this track is determined by the track restrictions of cam etc., motion by this oscillating roller, maintaining body is that datum mark is swung with the swing fulcrum shaft, and with wait the telescopic action of the maintaining body that produces to interact by the guiding piece (line slideway) that is attached on the supporter that supports maintaining body, the position that makes forming metal mould is unanimity more accurately.

The swing of maintaining body is carried out as the mobile of swinging distance.In advance the swinging distance of setting is according to design of dripping the thing feedway and then the device running of the property distance adjusting, set by experiment.

In addition, identical with above-mentioned main example, preferably maintaining body is supported on the supporter, and maintaining body or supporter drip the outside reinforcing of thing supply body wheel by spring, towards the rotary movable type that maintaining body is installed.And, be provided with as follows, promptly, be arranged on flexible restriction on maintaining body or the supporter and centering with guiding piece be attached to the flexible restriction on the rotary movable type and feel relieved and to use the block butt, at least the track that can not cross forming metal mould in the servo-actuated scope is outstanding laterally, and makes maintaining body consistent with the correct position ground of metal pattern.And outside the servo-actuated scope, maintaining body or supporter turn back to original swing-around trajectory.

According to above-mentioned, maintaining body is simultaneously swung one side by telescopic action, makes the position consistency of metal pattern and maintaining body.

In addition, the afterburning method of the maintaining body of above-mentioned explanation, flexible restriction and swing be an example just, is not limited to these.For example, also can replace spring to carry out reinforcing with cylinder.

And, also cam follower can be set on maintaining body, stretch by the flexible track of maintaining body with cam.And, also can utilize the electric drive system of servomotor etc. to carry out the flexible and swing of maintaining body.

And the position of the maintaining body outside the servo-actuated interval is as long as coincide with the position of the discharge die head of extruder, and other positions are then unimportant.

Further just Fig. 7 describes, and has one or more swinging axles on the wheel hub (wheel) of rotation.Each swinging axle has the swing arm of L font (or the font of falling L).The part that the length of L font is intersected is oscillation center (swinging axle), has cam follower on the short side's of L font a end, in case the wheel hub rotation, then cam follower is along with fixing cam is the center swing with the swinging axle.One side of the length of L font has guiding piece (line slideway), and maintaining body is installed in the front end of guiding piece.Maintaining body slides along guiding piece, by releases outside the rotation of wheel hub such as springs.

7-2. utilize track (one) along off-centre operation

A kind of system, the main example of the mechanism consistent with the above-mentioned rotational trajectory that makes maintaining body and forming metal mould contrasts, drip the whirligig that thing is supplied with body as rotary movable type, utilization replaces center of circle track along the track of off-centre operation, the maintaining body of rotary movable type is supported on the fixed part that moves on the track of off-centre operation, fixed part with the approaching certain limit of forming metal mould of rotation in, by restriction guiding piece restriction rotation motion track, make maintaining body or basically identical consistent with this with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

In Fig. 8 with the shape illustration of so-called off-centre operation concrete example, be the example of utilization along the application scheme of the metal pattern servo-actuated of the track of off-centre operation, be to use along the track of the off-centre operation that horizontally rotates, by the effect of restriction guiding piece, accurately make the device of the position consistency of maintaining body and forming metal mould.As shown in Figure 8, be oval (the not being oval) shape of growing crosswise along the track of off-centre operation, be the track that has the shape of two different circles of center at two ends.In addition, also can be track along the track of off-centre operation along the off-centre operation of vertical rotation.

A kind of molding die follow-up type drips thing supply method and device, promptly, rotary movable type drips the maintaining body on the thing supply body, be supported on and on the track of off-centre operation, horizontally rotating on the mobile fixed part, fixed part with the approaching certain limit of forming metal mould of rotation in, limit by the restriction guiding piece, make the rotation motion track consistent with the rotational trajectory of forming metal mould, preferably make track deformation, consistent with the circular shape of the rotational trajectory of forming metal mould, make the rotational trajectory of maintaining body and forming metal mould in full accord, make moving fully and the mobile servo-actuated of forming metal mould of maintaining body, or make moving fully and the mobile servo-actuated of maintaining body of forming metal mould.

The following system of concrete employing, promptly, the maintaining body of rotation movable type is supported by telescoping mechanism, this telescoping mechanism is arranged on the mediums such as belt on the flexible gearing of belt drive unit or chain and sprocket driving device etc. or chain, on the track of medium operation, by comprising at least the concentric circular orbit part of being moved with movable forming metal mould of circular orbit, in concentric circular orbit scope, make maintaining body or basically identical consistent with the track of forming metal mould.

The restriction guiding piece of the circular arc between belt pulley that also can be by being arranged on flexible gearing or the sprocket wheel etc. is determined the concentric circular orbit of movable forming metal mould that moves with medium.

7-3. utilize track along off-centre operation (its two and its three)

A kind of system, in the main example of the consistent mechanism of the above-mentioned rotational trajectory that makes maintaining body and forming metal mould, rotary movable type drips thing, and to supply with the whirligig of body be other the scheme of utilizing along the track of off-centre operation, promptly, the maintaining body that rotary movable type drips on the thing supply body can move along guiding piece, this guiding piece moves in rotation on the track of off-centre operation, maintaining body is in case rotation, by be fixedly installed on rotary movable type drip thing supply with external cam and with the incorporate cam follower of maintaining body, the maintaining body one side moves the forming metal mould of one side near rotation along guiding piece, within the specific limits, make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

In Fig. 9, exemplified and utilized along the concrete example of the track (its two) of off-centre operation, it is the example of utilizing along other application schemes of off-centre operation track, promptly, be to use along the track of the off-centre operation that horizontally rotates, accurately make the device of the position consistency of maintaining body and forming metal mould, but it is different along the track (one) of off-centre operation with utilization, do not use the restriction guiding piece, identical with above-mentioned main example, by the effect of cam and cam follower and guiding piece, accurately make the position consistency of maintaining body and forming metal mould.

A kind of molding die follow-up type drips thing supply method and device; as shown in the figure; the maintaining body that rotary movable type drips on the thing supply body can move (in addition along guiding piece; in the scheme of using off-centre operation; there are not special requirement to tilt) with certain angle; this guiding piece on the track of off-centre operation, horizontally rotate mobile; maintaining body is in case rotation; then by be fixedly installed on rotary movable type drip thing supply with on the body cam and with the incorporate cam follower of maintaining body; the maintaining body one side moves the forming metal mould of one side near rotation along guiding piece; in certain scope; make the rotational trajectory of maintaining body and forming metal mould in full accord substantially; make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

In addition; identical with above-mentioned main example; maintaining body is supported on the supporter; preferably supporter stretches by the outside of extension spring towards the wheel that maintaining body is installed; cam follower is set at the inner peripheral surface butt with cam; more not outstanding laterally; supporter passes in and out along the guiding piece on the curve that is arranged on cam; the supporter one side moves the forming metal mould of one side near rotation along guiding piece; in certain scope; make the rotational trajectory of maintaining body and forming metal mould in full accord substantially, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body.

The rotational trajectory of movable forming metal mould is a circular orbit, and the molding die follow-up type movable type drips the maintaining body on the thing supply body, also can adopt the radius of turn with retractable to be rotated the scheme that rotatablely moves of moving or comprising swing.

Utilization is along the track (its three) of off-centre operation, it is other the example of utilizing along the track of off-centre operation of application scheme, use is along the track of the off-centre operation of vertical rotation, and only different with utilizing track along off-centre operation (one, its two) at that point molding die follow-up types drip thing supply method and device.

7-4. will drip thing supplies with the rotation of the rotation of body and forming metal mould and is arranged on method on the same straight line (one and its two)

In order to form the track that the rotational trajectory that makes maintaining body overlaps with the rotational trajectory of metal pattern,, have and supply with the rotation of the rotation of body and forming metal mould and be arranged on method on the same straight line dripping thing as Figure 11 and shown in Figure 12.By utilizing cam and guide rail described in this setting and the utilization (6), can make the rotational trajectory of the rotational trajectory of maintaining body and metal pattern consistent.

Of the present invention thing supply method and device, supply with and during the building mortion of rotary compressing forming machine using combination to utilize based on the rotary material of extrusion, the supply of can be accurately and promptly dripping thing is inserted, can not have substandard products ground and produce formed products, and, in order to enhance productivity,, therefore can be used for producing the preform of synthetic resin container shaping usefulness owing to can improve the rotary speed etc. of rotary compressing forming machine, the circulation of accelerating to be shaped.

Claims (26)

1. one kind will drip the method that thing forces to insert shaping former recess, in compressing forming machine, the thing that drips of moulding material is forced to insert in shaping former recess, it is characterized in that, the synthetic resin of the molten condition that will extrude from the extruding peristome that is formed on the extrusion die front end, keep by maintaining body and the parting tool that is positioned on the synthetic resin receiving position relative with extrusion die, cut off or cut off, keep, form the quantitative thing that drips, keep carrying a thing with maintaining body, to simultaneously remove maintenance at the thing that drips that the drain position above the shaping former keeps, one towards shaping former recess pressure insertion, supply with

To drip thing and force the method inserted to shaping former recess, be to fall method by applying acceleration or applying the pressure that constant speed based on inertia descends the maintaining body that keeps dripping thing.

2. the method that will drip thing pressure insertion shaping former recess as claimed in claim 1 is characterized in that, in order by the constant speed that applies acceleration or apply based on inertia the maintaining body that keeps dripping thing to be descended, is provided with elevator.

3. the method that will drip thing pressure insertion shaping former recess as claimed in claim 1, it is characterized in that, the rotational trajectory of movable forming metal mould is a circular orbit, the molding die follow-up type movable type drips thing supplies with maintaining body on the body, can free telescopic moving or be rotated motion with the radius of turn of retractable.

4. the method that will drip thing pressure insertion shaping former recess as claimed in claim 1, it is characterized in that, make rotary movable type drip thing and supply with maintaining body one side on the body and drip thing with respect to rotary movable type to supply with the normal slope of body certain angle, one side approaching with the forming metal mould of rotation, make the consistent or basically identical of rotational trajectory of maintaining body and forming metal mould within the specific limits.

5. the method that will drip thing pressure insertion shaping former recess as claimed in claim 1, it is characterized in that, rotary movable type drips the maintaining body on the thing supply body, in case maintaining body rotation, then drip the external cam of thing supply by being arranged on rotary movable type, with with the incorporate cam follower of maintaining body, it is approaching with the forming metal mould of rotation that one side moves one side along guiding piece, in certain scope, make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

6. as claimed in claim 5ly will drip the method that thing force to insert shaping former recess, it is characterized in that, maintaining body with the forming metal mould of rotation near the time, further swing is with the position follower of forming metal mould.

7. as claim 5 or the 6 described methods that will drip thing pressure insertion shaping former recess, it is characterized in that, maintaining body is supported on the supporter, supporter is applied power towards the outside of the wheel that maintaining body is installed, by afterburning or be pressed, cam follower is set at and the cam butt, not outstanding to the more lateral, supporter is set at respect to the curve of cam and normal has certain angle, perhaps along with the guiding piece turnover that can be changed to best angle, the supporter one side moves along guiding piece, one side makes maintaining body and metal pattern butt as required, approaching with the forming metal mould of rotation, in certain scope, make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

8. the method that will drip thing pressure insertion shaping former recess as claimed in claim 1, it is characterized in that, the maintaining body of rotary movable type is supported on the fixed part that moves on the track of off-centre operation, fixed part with the approaching certain limit of forming metal mould of rotation in, by limiting motion track by restriction guiding piece on the track that is arranged on fixed part or cam, make maintaining body or basically identical consistent with this with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

9. the method that will drip thing pressure insertion shaping former recess as claimed in claim 8, it is characterized in that, the maintaining body of rotation movable type, support by the telescoping mechanism that is arranged on the medium in the flexible gearing, by comprising the concentric circular orbit part of being moved with movable forming metal mould of circular orbit at least, in concentric circular orbit scope, maintaining body or basically identical consistent with the track of forming metal mould.

10. the method that will drip thing pressure insertion shaping former recess as claimed in claim 9, it is characterized in that, maintaining body is supported on the supporter, supporter is applied power towards the outside of the wheel that maintaining body is installed, cam follower is set at and the cam butt, not outstanding to the more lateral, supporter is along with guiding piece passes in and out, the supporter one side moves along guiding piece, one side is approaching with the forming metal mould of rotation, in certain scope, make maintaining body or basically identical consistent, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body with the rotational trajectory of forming metal mould.

11. will drip method that thing forces to insert shaping former recess as in the claim 8～10 each is described, it is characterized in that, be the track of level or vertical rotation along the track of off-centre operation.

12. the method that will drip thing pressure insertion shaping former recess as claimed in claim 1, it is characterized in that, when the motion track of maintaining body is consistent with the rotational trajectory of the forming metal mould of rotation, make the consistent control of translational speed of maintaining body and forming metal mould.

13. the method that will drip thing pressure insertion shaping former recess as claimed in claim 1 is characterized in that the formed products that is shaped is a preform in compressing forming machine.

14. one kind will drip the device that thing forces to insert shaping former recess, in compressing forming machine, the thing that drips of moulding material is forced to insert in shaping former recess, it is characterized in that having: be used for making the forming synthetic resin material be in softening molten condition and with its pressing mechanism of extruding by the heating plasticization; Be formed on the extruding peristome of the extrusion die front end that is attached on the pressing mechanism; Be used to keep the molten condition that squeezes out from the extruding peristome synthetic resin, be positioned at the maintaining body on the synthetic resin receiving position relative with extrusion die; Be used to cut off synthetic resin, form the quantitative parting tool that drips thing; Be transported to the drain position of shaping former top with dripping thing, one side will keep drip thing remove keep one towards shaping former recess force to insert, the mechanism of supply,

To drip thing and force the method inserted to shaping former recess, be to fall method by applying acceleration or applying the pressure that constant speed based on inertia descends the maintaining body that keeps dripping thing.

15. the device that will drip thing pressure insertion shaping former recess as claimed in claim 14 is characterized in that, in order by the constant speed that applies acceleration or apply based on inertia the maintaining body that keeps dripping thing to be descended, is provided with elevator.

16. the device that will drip thing pressure insertion shaping former recess as claimed in claim 14, it is characterized in that, the rotational trajectory of movable forming metal mould is a circular orbit, the molding die follow-up type movable type drips thing supplies with maintaining body on the body, can free telescopic moving or be rotated motion with the radius of turn of retractable.

17. the device that will drip thing pressure insertion shaping former recess as claimed in claim 14, it is characterized in that, make rotary movable type drip thing and supply with maintaining body one side on the body and drip thing with respect to rotary movable type to supply with the normal slope of body certain angle, one side approaching with the forming metal mould of rotation, make the consistent or basically identical of rotational trajectory of maintaining body and forming metal mould within the specific limits.

18. the device that will drip thing pressure insertion shaping former recess as claimed in claim 14, it is characterized in that, rotary movable type drips the maintaining body on the thing supply body, in case maintaining body rotation, then drip the external cam of thing supply by being arranged on rotary movable type, with with the incorporate cam follower of maintaining body, it is approaching with the forming metal mould of rotation that one side moves one side along guiding piece, in certain scope, make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

19. as claimed in claim 18ly will drip the device that thing force to insert shaping former recess, it is characterized in that, maintaining body with the forming metal mould of rotation near the time, further swing is with the position follower of forming metal mould.

20. as claim 18 or the 19 described devices that will drip thing pressure insertion shaping former recess, it is characterized in that, maintaining body is supported on the supporter, supporter is applied power towards the outside of the wheel that maintaining body is installed, by afterburning or be pressed, cam follower is set at and the cam butt, not outstanding to the more lateral, supporter is set at respect to the curve of cam and normal has certain angle, perhaps along with the guiding piece turnover that can be changed to best angle, the supporter one side moves along guiding piece, one side makes maintaining body and metal pattern butt as required, approaching with the forming metal mould of rotation, in certain scope, make maintaining body or basically identical consistent with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

21. the device that will drip thing pressure insertion shaping former recess as claimed in claim 14, it is characterized in that, the maintaining body of rotary movable type is supported on the fixed part that moves on the track of off-centre operation, fixed part with the approaching certain limit of forming metal mould of rotation in, by limiting motion track by restriction guiding piece on the track that is arranged on fixed part or cam, make maintaining body or basically identical consistent with this with the rotational trajectory of forming metal mould, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body, or make the mobile servo-actuated of the mobile and maintaining body of forming metal mould.

22. the device that will drip thing pressure insertion shaping former recess as claimed in claim 21, it is characterized in that, the maintaining body of rotation movable type, support by the telescoping mechanism that is arranged on the medium in the flexible gearing, by comprising the concentric circular orbit part of being moved with movable forming metal mould of circular orbit at least, in concentric circular orbit scope, maintaining body or basically identical consistent with the track of forming metal mould.

23. the device that will drip thing pressure insertion shaping former recess as claimed in claim 22, it is characterized in that, maintaining body is supported on the supporter, supporter is applied power towards the outside of the wheel that maintaining body is installed, cam follower is set at and the cam butt, not outstanding to the more lateral, supporter is along with guiding piece passes in and out, the supporter one side moves along guiding piece, one side is approaching with the forming metal mould of rotation, in certain scope, make maintaining body or basically identical consistent, make the mobile servo-actuated of the mobile and forming metal mould of maintaining body with the rotational trajectory of forming metal mould.

24. will drip device that thing forces to insert shaping former recess as in the claim 21～23 each is described, it is characterized in that, be the track of level or vertical rotation along the track of off-centre operation.

25. the device that will drip thing pressure insertion shaping former recess as claimed in claim 14, it is characterized in that, when the motion track of maintaining body is consistent with the rotational trajectory of the forming metal mould of rotation, make the consistent control of translational speed of maintaining body and forming metal mould.

26. the device that will drip thing pressure insertion shaping former recess as claimed in claim 14 is characterized in that the formed products that is shaped is a preform in compressing forming machine.

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