CN102241131A - High-pressure injection molding process and high-pressure injection molding device finishing same - Google Patents
High-pressure injection molding process and high-pressure injection molding device finishing same Download PDFInfo
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- CN102241131A CN102241131A CN2010101669024A CN201010166902A CN102241131A CN 102241131 A CN102241131 A CN 102241131A CN 2010101669024 A CN2010101669024 A CN 2010101669024A CN 201010166902 A CN201010166902 A CN 201010166902A CN 102241131 A CN102241131 A CN 102241131A
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Abstract
The invention discloses a high-pressure injection molding process which comprises the following steps of: a, providing at least one bottle embryo to a closing device; b, providing a first mold and a second mold corresponding to each other of the closing device, and performing relative pressing to form a mold cavity in the first mold and the second mold so as to contain the bottle embryo in the mold cavity; c, providing a high-pressure gas to perform blow molding of the bottle embryo so that the bottle embryo forms a container; d, providing a movable module below the mold cavity to push against the container toward the inside of the mold cavity so that the bottom end of the container is extruded by the movable mold to generate at least one acute-angle surface; and e, enabling the closing device to perform mold withdrawing operation so as to take out the container.
Description
Technical field
The present invention is a kind of high pressure injection molding method and device, more detailed it, especially refer to a kind of processing procedure of the high pressure casting that can be applicable to the plastic bottle material and the high pressure casting device of finishing this processing procedure, form tangible screw thread for the container after the moulding, and produce acute angle-shaped in the bottom.
Background technology
Press, common on the market cosmetics are as colored drawing nail polish, mascara, and the employed container of liquid informer mostly adopts plastic cement material to make, and be convenience and the practicality of asking in the use, many containers can add a base in the bottom, so that this container can firmly stand on the desktop; Yet, because of the container casting processing procedure of commonly using, especially the container bottle blowing processing procedure of PET material, has technology limitation own, therefore this container bottom after the moulding all has arc chord angle, and be difficult for blowing mould and go out a thread segment, even but blowing mould comes out, the shape of its screw thread is quite inhomogeneous, and the degree of depth is also not enough, cause thread segment quite not obvious, therefore, when this container screw lock behind this base, easily because of the collision of the application of force or external force, and cause this container and this base to come off mutually, and cause the situation of loss; And when the user is positioned over it in cosmetic case of carrying, also cause the trouble of seeking and locking again easily because of coming off often, moreover, after repeatedly locking for a long time, also can make that this thread segment polishes gradually, cause can't being locked in this base fully.
In view of this, many containers are by being provided with Fastening tenon structure in the both sides, bottom, in the fixing mode in conjunction with this base, use the above-mentioned screw lock mode that replaces, yet, though in comparison, can increase its conjugation a little, but still can be because of the application of force or collision produce the situation that comes off a little; Comprehensive above-mentioned institute says, has only to overcome arc chord angle and the unconspicuous shortcoming of screw thread on the processing procedure, could solve the problem of conjugation between above-mentioned this container and this base.
Summary of the invention
Open the shortcoming of prior art on comprehensive, comprise the container casting processing procedure of commonly using haply, has technology limitation own, therefore this container bottom after the moulding all has arc chord angle, and the screw thread form of blowing mould is quite not obvious, causes between this container and this base being easy to generate because of conjugation is not good the situation that comes off; And in view of solving above-mentioned shortcoming, the objective of the invention is to the high pressure casting device that proposes a kind of processing procedure of high pressure casting and finish this processing procedure, it can overcome shortcoming of the prior art, improves the shape of container after the moulding, improve conjugation, avoid producing situation about coming off.
For achieving the above object, the invention discloses a kind of processing procedure of high pressure casting, it comprises following steps:
A. provide at least one bottle of embryo to a mold closing mechanism;
B. provide this mold closing mechanism to have corresponding one first mould and one second mould, after relative pressing, form a die cavity in this first mould and this second mould, be placed in wherein for this bottle embryo;
C., one gases at high pressure are provided,, make this bottle embryogenesis one container so that this bottle embryo is carried out blowing moulding;
D. provide an active module in this die cavity below,, make this container bottom pushed by this active module, to produce at least one acute angle face with this container of pushing and pressing in this die cavity;
E. make this mold closing mechanism move back the operation of mould, to take out this container.
Wherein, among the step b, this bottle embryo has a bottle cap thread segment and a body, and is concaved with the corresponding section of a bottle cap screw thread, a body set section and a thread groove section in this die cavity in regular turn, and this thread groove section is provided with a plurality of thread grooves; When this bottle embryo was placed in this die cavity, this bottle cap thread segment was corresponding to the corresponding section of the bottle cap screw thread in this die cavity, and a body of this bottle embryo is corresponding to the body set section in this die cavity.
Wherein, among the step c, this bottle embryo is after these gases at high pressure are blown into, and this body can be along this body set section, this thread groove section expansion molding, and forms a space to be filled between this body and each thread groove, and this container bottom forms the arc surface of an evagination.
Wherein, in the steps d, this active module is mobile lifting in a through hole of this die cavity bottom, this active module of mat pushes against this arc surface when rising, make this arc surface partly produce back the effect of squeezing, and by the gas pressure of these gases at high pressure, make this thread groove expansion of this arc surface part towards these die cavity both sides, for this container in to producing a threaded portion in the thread groove place.
Also disclose a kind of high pressure casting device, having comprised:
One mold closing mechanism, comprise a set of molds and at least one active module, one first mould and one second mould of and the movable pressing symmetrical of this set of molds by the left and right sides, be respectively equipped with at least one first die cavity and at least one second die cavity in this first mould and this second mould, when this first mould and this second mould pressing, form a die cavity between this first die cavity and this second die cavity, ccontaining for one bottle of embryo, this die cavity can be communicated to the outside of this set of molds respectively in two ends up and down, and be provided with a through hole in this die cavity bottom connection place, for this active module mobile lifting in this through hole;
One blowning installation is blown into a pressure-air in this bottle embryo towards this die cavity.
Wherein, This die cavity is concaved with the corresponding section of a bottle cap screw thread, a body set section in regular turn in the other end with respect to this through hole, and a thread groove section, and this thread groove section is provided with a plurality of thread grooves, and this thread groove section is just corresponding to this through hole.
Wherein, this first mould and this second mould mat one first power cylinder respectively drive, and make this first mould and this second mould can relative closing or separate.
Wherein, this active module is driven by one second power cylinder, so that this active module mobile lifting in this through hole.
Pass through said structure, the present invention goes up the effect on top to this container by this active module, make plastics produce back the effect of squeezing, and produce this acute angle face and this threaded portion, and the screw thread form on this threaded portion is quite even, obviously, use the arc chord angle and the unconspicuous shortcoming of screw thread of case before overcoming, and increase degree of combining closely between this container and base, to reach the purpose of strengthening the locking effect, and the screw thread form that produces because of this threaded portion is quite even, obviously, therefore make this container in all can greatly promoting on the quality and on attractive in appearance, owing to there is no complicated process technique, only need can make this container produce this acute angle face and this threaded portion, need not to change the structure of this die cavity by this active module, and also quite simple and easy and quick on the processing procedure.
Description of drawings
The allocation plan that Fig. 1 forms for each unit of the present invention.
Fig. 2 is the structural representation of closing unit of the present invention.
Fig. 3 is the action schematic diagram () of closing unit of the present invention.
Fig. 4 is the action schematic diagram (two) of closing unit of the present invention.
Fig. 5 is the partial enlarged drawing of Fig. 4.
Fig. 6 is the action schematic diagram (three) of closing unit of the present invention.
Fig. 7 is the partial enlarged drawing of Fig. 6.
The specific embodiment
For ease of explanation this case represented central idea in foregoing invention content one hurdle, express with specific embodiment now.Various different objects are described in the ratio that is suitable for illustrating, size, deflection or displacement among the embodiment, but not are drawn in the ratio of actual components, close chat earlier bright.And in the following description, similar elements is to represent with identical numbering.
Shown in Fig. 1 drawing, the present invention is the high pressure injection molding machine, mainly comprises into material unit 10, a material feeding unit 20, a closing unit 30; The present invention is directed to this closing unit 30 and carry out the improvement of processing procedure, can be applicable to the plastic bottle processing procedure of PET (Polyethylene terephthalate) material.
This goes into material unit 10 for dropping into a plurality of plastic pellets, to carry out heat fused by a heater 11, and enter this material feeding unit 20 in order to carrying out a bottle embryo forming operation, a plurality of bottles of embryos 40 after the moulding are delivered to a discharging conveyer belt 22 through a clamping device 21, and this bottle embryo 40 is delivered to this closing unit 30 by this discharging conveyer belt 22, in order to carrying out matched moulds and blow-molded operation, bottle embryo of this after the moulding 40 has a bottle cap thread segment 41 and a body 42; Yet any known bottle embryo process apparatus all can be applicable to the present invention, and it is from plastics pan feeding, material feeding, and extremely the operating type of bottle embryo forming is not a claim of the present invention, does not therefore add to give unnecessary details.
As shown in Figures 1 and 2, this closing unit 30 comprises a mold closing mechanism 31 and two first power cylinders 32, one second power cylinder 33, and a blowning installation (figure does not show).This mold closing mechanism 31 comprises a set of molds 34 and at least one active module 35, this set of molds 34 is made up of the left and right sides symmetrical one first mould 341 and one second mould 342, this first mould 341 and these first power cylinder, 32 drivings of mat respectively of this second mould 342, make this first mould 341 and this second mould 342 can relative closing or separate, to carry out the action of activity pressing.
Be respectively equipped with at least one first die cavity 343 and at least one second die cavity 344 in this first mould 341 and this second mould 342, when this first mould 341 and these second mould, 342 pressings, 344 of this first die cavity 343 and this second die cavitys form a die cavity 36 (as shown in Figure 4), ccontaining for this bottle of embryo 40, and this die cavity 36 can be communicated to the outside of this set of molds 34 respectively in two ends up and down, and is provided with a through hole 361 in these die cavity 36 bottom connections place; This die cavity 36 is concaved with the corresponding section of a bottle cap screw thread 362, one body set section 363 in regular turn in the other end with respect to this through hole 361, an and thread groove section 364, make this thread groove section 364 just corresponding to these through hole 361 places, wherein, this thread groove section 364 is provided with a plurality of thread grooves 365.
This active module 35 is located at 342 on this first mould 341 and this second mould, this second power cylinder 33 of these active module 35 mats drives, so that this active module 35 mobile lifting in this through hole 361, yet, the quantity of this active module 35 there is no specific limited, only need cooperate the quantity setting of this die cavity 36; This blowning installation is for providing gases at high pressure, to carry out blow-molded operation.
After understanding said structure, below do one at action of the present invention and principle and describe in detail:
Shown in Fig. 3 and Fig. 4 drawing, mat one bottle blank seat (figure does not show) is delivered to this mold closing mechanism 31 with this bottle embryo 40, this first mould 341 and these second mould, 342 relative pressings, at this moment, this bottle embryo 40 can be placed in this die cavity 36, make this bottle cap thread segment 41 just corresponding to the corresponding section 362 of this bottle cap screw thread, and this body 42 is just corresponding to body set section 363, after treating this bottle embryo 40 location, this blowning installation can be blown into a pressure-air in this bottle embryo 40 towards this die cavity 36.
As Fig. 4 and shown in Figure 5, this bottle embryo 40 is after these gases at high pressure are blown into, this body 42 can be along this body set section 363, these thread groove section 364 expansion moldings, to form a container 50, and form the arc surface 51 of an evagination in these container 50 bottoms, and because of these gases at high pressure during to this thread groove section 364, this bottle embryo 40 straight lines are expanded downwards, therefore these plastics of this bottle embryo 40 can't be filled in this thread groove 365, make 365 of this body 42 and each thread grooves form a space 37 to be filled.
Shown in Fig. 6 and Fig. 7 drawing, this bottle embryo 40 is after blowing moulding is this container 50, this second power cylinder 33 of these active module 35 membership drives, in this through hole 361, to rise to this arc surface 51 of pushing and pressing, at this moment, these plastics of these arc surface 51 parts can produce back the effect of squeezing, and make these container 50 bottoms produce at least one acute angle face 52; Because the gas pressure that these gases at high pressure had can produce a strength that stops to the crowded active force of this time, therefore, the strength that these plastics of this arc surface 51 are subjected to pushing up and down, can be towards these thread groove 365 expansions of these die cavity 36 both sides, to be filled in this space 37 to be filled, make this container 50 in to producing a threaded portion 53 in thread groove 365 places.
Learn by above-mentioned, go up the effect on top by 35 pairs of these containers 50 of this active module, really can make these container 50 bottoms produce an acute angle face 52, and produce this threaded portion 53 in the pre-position, and the screw thread form on this threaded portion 53 is quite even, obviously, therefore, make this container 50 except all can greatly promoting on quality and on attractive in appearance, when these container 50 bottom desires connect a base when (figure does not show), by with these threaded portion 53 screw locks in this base, can firmly combine, and cooperate the setting of this acute angle face 52, can avoid making this base produce the situation that comes off, the comprehensively setting of this acute angle face 52 and this threaded portion 53 because of the application of force or external force collision a little, can increase the degree of combining closely between this container and base, to reach the purpose of strengthening the locking effect.
Though the present invention explains with a most preferred embodiment, be skillful in this skill person and can do various multi-form changes not breaking away under the present invention spirit and the category.Above illustrated embodiment is only in order to explanation the present invention, and is non-in order to limit the scope of the invention.Such as do not disobey various modifications or the variation that spirit of the present invention is engaged in, all belong to the present patent application claim.
Claims (8)
1. the processing procedure of a high pressure casting, it comprises following steps:
A. provide at least one bottle of embryo to a mold closing mechanism;
B. provide this mold closing mechanism to have corresponding one first mould and one second mould, after relative pressing, form a die cavity in this first mould and this second mould, be placed in wherein for this bottle embryo;
C., one gases at high pressure are provided,, make this bottle embryogenesis one container so that this bottle embryo is carried out blowing moulding;
D. provide an active module in this die cavity below,, make this container bottom pushed by this active module, to produce at least one acute angle face with this container of pushing and pressing in this die cavity;
E. make this mold closing mechanism move back the operation of mould, to take out this container.
2. the processing procedure of high pressure casting according to claim 1, it is characterized in that, among the step b, this bottle embryo has a bottle cap thread segment and a body, and being concaved with the corresponding section of a bottle cap screw thread, a body set section and a thread groove section in this die cavity in regular turn, this thread groove section is provided with a plurality of thread grooves; When this bottle embryo was placed in this die cavity, this bottle cap thread segment was corresponding to the corresponding section of the bottle cap screw thread in this die cavity, and a body of this bottle embryo is corresponding to the body set section in this die cavity.
3. the processing procedure of high pressure casting as claimed in claim 2, it is characterized in that, among the step c, this bottle embryo is after these gases at high pressure are blown into, this body can be along this body set section, this thread groove section expansion molding, and form a space to be filled between this body and each thread groove, and this container bottom forms the arc surface of an evagination.
4. the processing procedure of high pressure casting as claimed in claim 3, it is characterized in that, in the steps d, this active module is mobile lifting in a through hole of this die cavity bottom, this active module of mat pushes against this arc surface when rising, and makes this arc surface partly produce back crowded effect, and by the gas pressure of these gases at high pressure, make this thread groove expansion of this arc surface part towards these die cavity both sides, for this container in to producing a threaded portion in the thread groove place.
5. high pressure casting device comprises:
One mold closing mechanism, comprise a set of molds and at least one active module, one first mould and one second mould of and the movable pressing symmetrical of this set of molds by the left and right sides, be respectively equipped with at least one first die cavity and at least one second die cavity in this first mould and this second mould, when this first mould and this second mould pressing, form a die cavity between this first die cavity and this second die cavity, ccontaining for one bottle of embryo, this die cavity can be communicated to the outside of this set of molds respectively in two ends up and down, and be provided with a through hole in this die cavity bottom connection place, for this active module mobile lifting in this through hole;
One blowning installation is blown into a pressure-air in this bottle embryo towards this die cavity.
6. high pressure casting device as claimed in claim 5 is characterized in that; This die cavity is concaved with the corresponding section of a bottle cap screw thread, a body set section in regular turn in the other end with respect to this through hole, and a thread groove section, and this thread groove section is provided with a plurality of thread grooves, and this thread groove section is just corresponding to this through hole.
7. high pressure casting device as claimed in claim 5 is characterized in that, this first mould and this second mould mat one first power cylinder respectively drive, and makes this first mould and this second mould can relative closing or separate.
8. high pressure casting device as claimed in claim 5 is characterized in that this active module is driven by one second power cylinder, so that this active module mobile lifting in this through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101669024A CN102241131A (en) | 2010-05-10 | 2010-05-10 | High-pressure injection molding process and high-pressure injection molding device finishing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101669024A CN102241131A (en) | 2010-05-10 | 2010-05-10 | High-pressure injection molding process and high-pressure injection molding device finishing same |
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| Publication Number | Publication Date |
|---|---|
| CN102241131A true CN102241131A (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101669024A Pending CN102241131A (en) | 2010-05-10 | 2010-05-10 | High-pressure injection molding process and high-pressure injection molding device finishing same |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3819789A (en) * | 1969-06-11 | 1974-06-25 | C Parker | Method and apparatus for blow molding axially deformable containers |
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2010
- 2010-05-10 CN CN2010101669024A patent/CN102241131A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3819789A (en) * | 1969-06-11 | 1974-06-25 | C Parker | Method and apparatus for blow molding axially deformable containers |
Non-Patent Citations (1)
| Title |
|---|
| 于丽霞，张海河: "《塑料中空吹塑成型》", 31 July 2005, article "注射吹塑成型", pages: 319-327 * |
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Application publication date: 20111116 |