CN102529068B - Method for crystallizing thin-wall end opening - Google Patents
Method for crystallizing thin-wall end opening Download PDFInfo
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- CN102529068B CN102529068B CN201010616348.5A CN201010616348A CN102529068B CN 102529068 B CN102529068 B CN 102529068B CN 201010616348 A CN201010616348 A CN 201010616348A CN 102529068 B CN102529068 B CN 102529068B
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- embryo
- port
- end opening
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- face
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Abstract
The invention relates to a method for crystallizing a thin-wall end opening. According to the method, a ripple positioned on the top surface of the end opening is eliminated in the process of crystallizing the end opening of a bottle embryo. The method comprises the following steps of: heating for softening, namely heating and softening the end opening of the bottle embryo by a first heating unit; pressing the embryo, namely pressing and flattening the top surface of the end opening to eliminate the ripple by a pressing mechanism in the embryo pressing process; and heating for crystallizing, namely crystallizing the end opening of the bottle embryo by the heating of a second heating unit. By the method, the ripple on the top surface of an end opening can be eliminated in the crystallizing process, and the temperature and pressure is not needed to be raised specially to eliminate the ripple when the bottle embryo is ejected, so energy consumption and the burden of machine bench equipment can be reduced, energy can be saved, and the discharge of carbon dioxide can be reduced.
Description
Technical field
The present invention relates to the crystallization port of container, relate in particular to the manufacture method of the thin-walled crystallization port of container.
Background technology
The general market of polyester container is PET material, PET is that " PET " (Polyethylene Terephthalate) is the saturated polyester that terephthalic acid (TPA) and ethylene glycol are polymerized, itself there is the good transparency, glossiness and gas barrier property, meet foodsafety standard, and recyclable processing recycling.Packing container that polyester container has been widely used in various product is as water bottle, juice bottle, pop bottle, edible oil bottle, cosmetic bottle, medicine bottle, beer bottle, wide-mouth bottle, liquid detergent etc.
Polyester bottles is in order to reach effect of Nai Gaore and high pressure, so especially all can impose crystallization processing, crystallization is treated to the port heating to the bottle embryo before bottle blowing, make the port crystallization of bottle embryo and harden, with physics and the mechanical property of the port heat resisting and pressure resisting of polyester bottles after raising bottle blowing, can be current hot filling product and apply.
The specification of early stage port is ALCOA 1716, its port wall thickness is 2.17 millimeters, conventional specification was the PCO 1810 formulating Christian era 2003 afterwards, its port wall thickness is 2.17 millimeters, and for the requirement of energy-saving and carbon-saving, up-to-date specification is the PCO 1881 formulating Christian era 2010, its port wall thickness is 1.60 millimeters, because its wall thickness is thinner, therefore can save the use of material, the demand of reach energy-conservation, economizing carbon.
But because the port wall thickness of PCO 1881 specifications is thinner, therefore, the slenderness ratio of its jetting mold using is longer and narrower, thereby mobility is not good, it causes the terminal pressure deficiency of jetting mold, and the problem of generation Density inhomogeneity, thereby cause the port end face of the end that is positioned at jetting mold, after crystallization, produce out-of-flatness ripple.
In order to solve the out-of-flatness ripple of port end face, there is at present the method for two kinds of solutions, first, improve the injection molding temperature of jetting mold, improve temperature and can increase mobility, therefore can increase the terminal pressure of jetting mold, improve the problem of Density inhomogeneity, and reduce the out-of-flatness ripple of port end face.The second, be the injection molding pressure that directly improves jetting mold, injection molding pressure improves, and nature can increase the terminal pressure of jetting mold, and the problem of Density inhomogeneity also can be improved, and reduces the out-of-flatness ripple of port end face.
But, no matter be to increase to penetrate temperature or increase pressure, it not only causes the added burden on equipment, and have the risk of equipment life of shortening, more in the time of injection molding, need to expend the more energy, and violate energy-conservation target, the obviously method of the port of these existing manufacture PCO 1881 specifications, cannot meet the demand of energy-saving and carbon-saving.
Summary of the invention
Therefore, it is a kind of in the process of port crystallization that main purpose of the present invention is to provide, and eliminates the method for the irregular ripple of port end face simultaneously.
The present invention is a kind of method of crystallizing thin-wall end opening, can be used for a port of one bottle of embryo to carry out crystallization processing, and elimination is positioned at a ripple of the end face of this port, its step comprises carries out a softening heating schedule, carry out a pressure embryo program and carry out a crystallization heating schedule, wherein this softening heating schedule is by this port of this bottle of embryo of one first heating unit thermoplastic, and being the end face that flattens this port by a punching mechanism punching press, this pressure embryo program eliminates this ripple, and this crystallization heating schedule is to allow this port crystallization of this bottle of embryo by one second heating unit heating.
According to further improved technical scheme of the present invention, further comprising the steps of: to carry out a process of measurement, this process of measurement is obtained size after the crystallization of this port by a sized image measurement mechanism, and according to the punching stroke of this punching mechanism of adjusted size of this port.
According to further improved technical scheme of the present invention, further comprising the steps of: carry out a temperature monitoring program, this temperature monitoring program, in the time of this pressure embryo program, is monitored the temperature of this port of this bottle of embryo.
According to further improved technical scheme of the present invention, the material of this bottle of embryo is PET, and this softening heating schedule is for being heated to 100° centigrade～180 degree.
According to further improved technical scheme of the present invention, this softening heating schedule is for being heated to 110 degree～150 degree Celsius.
According to further improved technical scheme of the present invention, this bottle of embryo is sheathed on an embryo seat, this embryo seat has one and compresses face, this compresses face and contacts the end face of this port, and this punching mechanism comprises a cam and a stamping parts, this stamping parts orders about and this bottle of embryo of upper and lower displacement punching press by the rotation of this cam, makes this compress face and push the end face of this port.
According to further improved technical scheme of the present invention, this first heating unit comprises multiple heaters.
According to further improved technical scheme of the present invention, this second heating unit comprises multiple heaters.
Accordingly, the present invention is by the heating schedule and pressure embryo program of two-part, after this port is softening, eliminate this ripple by this punching mechanism punching press leveling, thereby by technology of the present invention, can in crystallization procedure, eliminate this ripple, that is needn't in forming bottle embryo, just eliminate this ripple, therefore can reduce the ejaculation cost of this bottle of embryo, eliminate this ripple and change in the mode of less expensive, and meet user's demand.
Brief description of the drawings
Fig. 1 is manufacture crystallizing thin-wall end opening closed loop artwork of the present invention;
Fig. 2 is manufacture crystallizing thin-wall end opening flow chart of the present invention;
Fig. 3 is the ripply bottle of port tool of the present invention embryonic knob composition;
Fig. 4 is the structure chart that bottle embryo of the present invention is sheathed on embryo seat;
Fig. 5 is the three-dimensional structure diagram of punching mechanism of the present invention; And
Fig. 6 is the front view of punching mechanism of the present invention.
Detailed description of the invention
For making your committee member have more deep understanding and approval to feature of the present invention, object and effect, hereby enumerate preferred embodiment and coordinate brief description of the drawings as rear:
Refer to shown in Fig. 1, Fig. 2 and Fig. 3, flow process of the present invention is a closed loop technique, can be used for a port 11 of one bottle of embryo 10 to carry out crystallization processing, and eliminate a ripple 12 of end face that is positioned at this port one 1, wherein step comprises and carries out a softening heating schedule S1, carries out a pressure embryo program S2, carries out a temperature monitoring program S3, carry out a crystallization heating schedule S4 and carry out a process of measurement S5.
Wherein this softening heating schedule S1 is by this port one 1 of this bottle of embryo of one first heating unit 30 thermoplastic 10, the temperature of this softening heating schedule S1 is difference according to the material of this bottle of embryo 10, it is mainly to make this bottle of embryo 10 softening and have plasticity, for instance, if the material of this bottle of embryo 10 is PET (PET), this softening heating schedule S1 is for being heated to 100° centigrade～180 degree, wherein again to be controlled at 110 degree～150 degree Celsius as best, and this temperature monitoring program S3 is in the time of this pressure embryo program S2, can be by the temperature of this port one 1 of this bottle of embryo 10 of temperature sensor 60 monitorings, to guarantee the heating-up temperature of this softening heating schedule S1, meet technologic needs, and this first heating unit 30 can comprise multiple heaters, it can arrange according to actual needs the heater of right quantity.
Please consult in the lump again Fig. 4, described in Fig. 5 and Fig. 6, this pressure embryo program S2 is that the end face that flattens this port one 1 by punching mechanism 20 punching presses is eliminated this ripple 12, wherein this bottle of embryo 10 is for being sheathed on an embryo seat 21, this embryo seat 21 has one and compresses face 211, this compresses face 211 and contacts the end face of this port one 1, and this punching mechanism 20 comprises a cam 22 and a stamping parts 23, this stamping parts 23 orders about and this bottle of embryo of upper and lower displacement punching press 10 by the rotation of this cam 22, make this compress the end face of face 211 these port ones 1 of extruding, now because this port one 1 has plasticity because temperature raises, therefore this ripple 12 (as shown in Figure 3) can be eliminated.
And this crystallization heating schedule S4 is this port one 1 crystallization that makes this bottle of embryo 10 by one second heating unit 40 heating, its crystallization processes for generally commonly using, mainly that this bottle of embryo 10 of heating is to crystallization temperature, make its crystallization cooling again, and this second heating unit 40 can comprise multiple heaters, it can arrange according to actual needs the heater of right quantity.
This process of measurement S5 obtains size after the crystallization of this port one 1 by a sized image measurement mechanism 50, and the foundation that can adjust as crystallization processes according to the size of this port one 1.
As mentioned above, the present invention is in the process of crystallization, eliminate the ripple 12 of the end face of this port one 1 simultaneously, it eliminates this ripple 12 by these punching mechanism 20 punching press levelings after this port one 1 is softening, thereby in penetrating this bottle of embryo 10, needn't specially improve temperature and pressure and eliminate this ripple 12, therefore can reduce the consumption of the energy and reduce the burden of board equipment and save manufacturing cost, it is to change to eliminate this ripple 12 in the mode of less expensive, and meets user's demand.
Be only the preferred embodiments of the present invention in sum, be not used for limiting practical range of the present invention, i.e. all equivalences of doing according to the content of the present patent application the scope of the claims change and modify, and all should be technology category of the present invention.
Claims (7)
1. a method for crystallizing thin-wall end opening, carries out crystallization processing for the port (11) to one bottle of embryo (10), and eliminates a ripple (12) of the end face that is positioned at described port (11), it is characterized in that, said method comprising the steps of:
Carry out a softening heating schedule (S1), described softening heating schedule (S1) is by the described port (11) of bottle embryo (10) described in one first heating unit (30) thermoplastic;
Carry out a pressure embryo program (S2), the end face that described pressure embryo program (S2) flattens described port (11) by a punching mechanism (20) punching press is eliminated described ripple (12);
Carry out a temperature monitoring program (S3), described temperature monitoring program (S3), in the time of described pressure embryo program (S2), is monitored the temperature of the described port (11) of described bottle embryo (10); And
Carry out a crystallization heating schedule (S4), described crystallization heating schedule (S4) is for making described port (11) crystallization of described bottle embryo (10) by one second heating unit (40) heating.
2. the method for crystallizing thin-wall end opening according to claim 1, it is characterized in that, further comprising the steps of: to carry out a process of measurement (S5), described process of measurement (S5) is obtained size after the crystallization of described port (11) by a sized image measurement mechanism (50), and according to the punching stroke of punching mechanism (20) described in the adjusted size of described port (11).
3. the method for crystallizing thin-wall end opening according to claim 1, is characterized in that, the material of described bottle embryo (10) is PET, and described softening heating schedule (S1) is for being heated to 100° centigrade～180 degree.
4. the method for crystallizing thin-wall end opening according to claim 3, is characterized in that, described softening heating schedule (S1) is for being heated to 110 degree～150 degree Celsius.
5. the method for crystallizing thin-wall end opening according to claim 1, it is characterized in that, described bottle embryo (10) is sheathed on an embryo seat (21), described embryo seat (21) has one and compresses face (211), the described end face that compresses face (211) and contact described port (11), and described punching mechanism (20) comprises a cam (22) and a stamping parts (23), described stamping parts (23) orders about by the rotation of described cam (22) and bottle embryo (11) described in upper and lower displacement punching press, compresses face (211) and push the end face of described port (11) described in making.
6. the method for crystallizing thin-wall end opening according to claim 1, is characterized in that, described the first heating unit (30) comprises multiple heaters.
7. the method for crystallizing thin-wall end opening according to claim 1, is characterized in that, described the second heating unit (40) comprises multiple heaters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010616348.5A CN102529068B (en) | 2010-12-30 | 2010-12-30 | Method for crystallizing thin-wall end opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010616348.5A CN102529068B (en) | 2010-12-30 | 2010-12-30 | Method for crystallizing thin-wall end opening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102529068A CN102529068A (en) | 2012-07-04 |
| CN102529068B true CN102529068B (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010616348.5A Expired - Fee Related CN102529068B (en) | 2010-12-30 | 2010-12-30 | Method for crystallizing thin-wall end opening |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1839028A (en) * | 2004-05-31 | 2006-09-27 | 株式会社吉野工业所 | Method of thermal crystallization treatment for cylindrical mouthpart of preform |
| CN101027177A (en) * | 2004-07-27 | 2007-08-29 | 东洋制罐株式会社 | Polyester container having excellent heat resistance and shock resistance and method of producing the same |
-
2010
- 2010-12-30 CN CN201010616348.5A patent/CN102529068B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1839028A (en) * | 2004-05-31 | 2006-09-27 | 株式会社吉野工业所 | Method of thermal crystallization treatment for cylindrical mouthpart of preform |
| CN101027177A (en) * | 2004-07-27 | 2007-08-29 | 东洋制罐株式会社 | Polyester container having excellent heat resistance and shock resistance and method of producing the same |
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| Publication number | Publication date |
|---|---|
| CN102529068A (en) | 2012-07-04 |
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Granted publication date: 20140723 Termination date: 20161230 |