CN102896766A - Air blowing pre-ventilation device of injection blowing molding machine - Google Patents
Air blowing pre-ventilation device of injection blowing molding machine Download PDFInfo
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- CN102896766A CN102896766A CN2012104450287A CN201210445028A CN102896766A CN 102896766 A CN102896766 A CN 102896766A CN 2012104450287 A CN2012104450287 A CN 2012104450287A CN 201210445028 A CN201210445028 A CN 201210445028A CN 102896766 A CN102896766 A CN 102896766A
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Abstract
The invention provides an air blowing pre-ventilation device of an injection blowing molding machine, which belongs to the technical field of thermoplastic molding, and solves the problem that the exhausting of the existing air blowing pre-ventilation device of the injection blowing molding machine is not complete, and thus a product is easy to crack and deform. The air blowing pre-ventilation device provided by the invention comprises a double-diameter air cylinder comprising a cylinder body; the cylinder body is provided with a cavity I and a cavity II, which are communicated with each other; the diameter of the cavity I is more than that of the cavity II; the cavity I and the cavity II are internally and respectively provided with a piston I and a piston II, which are respectively matched with the cavity I and the cavity II; and the outer side of the piston II is communicated with the outer side of the cylinder body. The air blowing pre-ventilation device of the injection blowing molding machine has the advantages of short air exhausting time and more complete air exhaustion.
Description
Technical field
The invention belongs to thermoplastic molding's technical field, relate to the pre-exchange device of air blowing that a kind of air blowing pre-exchange device, particularly a kind of notes blow blow moulding machine.
Background technology
It is a kind of equipment that plastic grain is made into hollow container by the injection moulding blow molding process that notes blow blow moulding machine, its specific works process is as follows: melt is injected into injection mold forms parison, again parison is placed blow mold, utilize compressed air that the preform blowup in the blow mold is become product.When blowing, the device of opening the blow vent of blow mold is called blow pre-exchange device, the air inlet when being used in blowing and the effect of the exhaust after the blowing.
The inlet end of blow mold is tubular, and the one end is the mould blow vent, in addition is provided with spring, pole in the inlet end, and an end of pole is provided with the plug that is complementary with blow vent, at the effect plug of lower time of spring force to the blow vent shutoff.Shown in Figure 4 such as Figure of description, the pre-exchange device of common air blowing is the cylinder of single cylinder diameter, the other end of the inlet end of blow mold is sealing state and is resisted against on the cylinder body simultaneously that the other end of pole is resisted against on the piston of cylinder, and the cavity of inlet end is connected with the cavity outer end of cylinder simultaneously.When needs are blown toward blow mold, piston movement promotes pole and moves, and overcome the elastic force of spring and drive plug motion blow vent is opened, inject gases at high pressure toward inlet end this moment, parison in the blow mold is carried out blow molding, to blow blow moulding machine be same source of the gas in the air pressure of the air pressure of cylinder and the gases at high pressure of inlet end injection owing to annotate, when the air pressure of the gases at high pressure that are positioned at blow mold during near the air pressure of cylinder, promoting pole under the effect of spring force moves, by plug with the blow vent shutoff, even ventilation this moment end stops air inlet, because the gases at high pressure in the blow vent shutoff, blow mold act on the plug, pushing piston can not be toward the motion of pole direction simultaneously, make blow vent be difficult to open, when the Leakage Gas pressure decreased in the product such as only having, the mould blow vent just can be opened thorough exhaust, and this needs the long action cycle, and exhaust is not thorough, and product is easily explosion distortion just.
Summary of the invention
The objective of the invention is to have the problems referred to above for existing technology, proposed the pre-exchange device of air blowing that notes that a kind of blow vent that makes the inlet end that blow vent can blow mold opens timely or close blow blow moulding machine.
Purpose of the present invention can realize by following technical proposal: a kind of notes blow the pre-exchange device of air blowing of blow moulding machine, it is characterized in that, comprise two diameter cylinders, described pair of diameter cylinder comprises cylinder body, described cylinder body has the diameter of the cavity one that is connected and cavity two and described cavity one greater than the diameter of described cavity two, be respectively equipped with the piston one and piston two that is complementary with it in the described cavity one with in the described cavity two, the outside of described piston two is connected with the outside of described cylinder body.
Notes blow blow moulding machine and need to cooperate blow mold to use, the inlet end of blow mold is tubular, the one end is the mould blow vent, be provided with spring in the inlet end, pole, one end of pole is provided with the plug that is complementary with blow vent, and the other end of pole is resisted against on the piston two, and the cavity of inlet end links to each other with cavity two sealings, when blowing, pour gases at high pressure in the cavity one of cylinder, pushing piston one moves plug toward the motion of piston two directions and pushing piston two, extrusion spring, and make the mould blow vent be in the state of opening, at this moment, enter gases at high pressure in the cavity of inlet end, gases at high pressure are through the carry out blowing of blow vent to mould, after product approval, inlet end stops air inlet and begins exhaust, because the diameter of piston two is little, the diameter of piston one is large, piston one can not pushed back by reaction force, pressure in the product is discharged by blow vent, in the time of die sinking, closes the air pressure of direct pushing piston one, piston one resets with the thrust that piston two is subject to spring, in order to carry out work next time.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned notes, this pre-exchange device of blowing also comprises the interlock top board that is strip, the two ends of described interlock top board are equipped with two diameter cylinders parallel and that arrange in the same way, and the same sidewall of described interlock top board all is resisted against on the corresponding described piston two.Two ends by the interlock top board arrange two two diameter cylinders, and the interlock top board can be simultaneously led in advance to the blow vent of a plurality of blow molds, make these notes blow blow moulding machine and can install and overpay blow mold and produce simultaneously, have improved operating efficiency.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned notes, the sidepiece of described pair of diameter cylinder is equipped with the groove that passes for described interlock top board, and described groove is connected with described cavity two.The two ends of interlock top board are embedded into respectively in the corresponding groove, make the interlock top board have guide effect when mobile, and make the advantage simple in structure of this pre-exchange device of blowing.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned notes, the inwall of described cavity one is provided with annular groove one, and described annular groove one is provided with sealing ring one.The sidepiece of piston one contacts with sealing ring one and forms sealing, and when piston one motion, the inwall of the cavity one of cylinder body does not does not wear and tear, and makes cylinder body can have long service life.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned notes, the inwall of described cavity two is provided with annular groove two, and described annular groove two is provided with sealing ring two.The sidepiece of piston two contacts with sealing ring two and forms sealing, and when piston two motion, the inwall of the cavity two of cylinder body does not does not wear and tear, and makes cylinder body can have long service life.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned notes, the sidewall of described cylinder body is provided with the steam vent that communicates with the inner chamber of described cylinder body, and described steam vent is between described annular groove one and the described annular groove two.Steam vent is set simultaneously, make piston one and piston two when mobile, the air pressure of the cavity of the cylinder body between annular groove one and the annular groove two communicates with the external world all the time, avoid because of piston one in pushing piston two is turned right moving process, the volume of the cavity of the cylinder body between annular groove one and the annular groove two diminish the air drag that produces and make piston again and again pushing piston two turn right mobile smooth and easy not.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned notes, described piston one adopts integrally manufactured with described piston two.Piston one adopts with piston two and is made into integration, and has motion advantage reliable, simple in structure, easy for installation.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned notes, an end of described cylinder body has slot to make way, and described slot to make way is connected with described cavity two.One end of cylinder body has slot to make way, and it is comparatively unimpeded that cavity two is connected with the inlet end of mould.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned notes, described piston one is 2-5 with the diameter ratio of described piston two.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned notes, described piston one adopts stainless steel material to make with described piston two.Stainless steel has good corrosion resistance, nonabradable advantage, makes piston one and piston two have long service life.
Compared with prior art, these notes pre-exchange device of air blowing of blowing blow moulding machine has the following advantages:
1, make blow vent be in all the time the state of opening when the exhaust by the pole of adopting two diameter cylinders to promote the mould openings ends, make evacuation time shorter and exhaust is more thorough, prevent that deformation, the explosion of product from appearring in product because exhaust is not enough, the phenomenon such as splash, improved the qualification rate of product;
2, cavity one arranges respectively annular groove one and annular groove two with cavity two, makes sealing ring respectively at producing sealing between the piston of correspondence, and sealing ring is installed on the piston relatively, and the inwall of cylinder body does not does not wear and tear, and makes cylinder body can have long service life;
3, with respect to adopting single diameter cylinder, the air compressor of high pressure need not be set additionally, reduce energy consumption;
4, the pre-exchange device of air blowing that these notes blow blow moulding machine also has motion advantage reliable, simple in structure, easy for installation.
Description of drawings
Fig. 1 is the pre-exchange device of air blowing that these notes the blow blow moulding machine cross-sectional schematic when implementing a blowing.
Fig. 2 is the cross-sectional schematic one that these notes blow the pre-exchange device enforcement two of air blowing of blow moulding machine.
Fig. 3 is the cross-sectional schematic two that these notes blow the pre-exchange device enforcement two of air blowing of blow moulding machine.
Fig. 4 is the cross-sectional schematic of the pre-exchange device of air blowing of common single diameter cylinder.
Among the figure, 1, two diameter cylinder; 1a, cylinder body; 1b, cavity one; 1b1, annular groove one; 1c, cavity two; 1c1, annular groove two; 1d, steam vent; 1e, slot to make way; 1f, groove; 2, piston one; 3, piston two; 4, interlock top board; 5, sealing ring one; 6, sealing ring two; 7, blowing grinding tool; 8, inlet end; 8a, blow vent; 9, spring; 10, pole; 11, plug; 12, product.
The specific embodiment
Below be specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
Embodiment one
As shown in Figure 1, a kind of notes blow the pre-exchange device of air blowing of blow moulding machine, comprise two diameter cylinders 1, and two diameter cylinders 1 comprise cylinder body 1a, and cylinder body 1a has cavity one 1b and cavity two 1c that are connected, and the diameter of cavity one 1b is the twice of the diameter of cavity two 1c.Be respectively equipped with the piston 1 and piston 23 that is complementary with it in cavity one 1b with in cavity two 1c, the outside of piston 23 is connected with the outside of cylinder body 1a.The inwall of cavity one 1b is provided with annular groove one 1b1, is embedded with sealing ring 1 on annular groove one 1b1; The inwall of cavity two 1c is provided with annular groove two 1c1, is embedded with sealing ring 26 on annular groove two 1c1.The sidepiece of piston 1 contacts with sealing ring 1 and forms sealing, and when piston one 2 motion, the inwall of cavity one 1b of cylinder body 1a does not does not wear and tear, and makes cylinder body 1a can have long service life.The sidepiece of piston 23 contacts with sealing ring 26 and forms sealing, and when piston 23 motion, the inwall of cavity two 1c of cylinder body 1a does not does not wear and tear, and makes cylinder body 1a can have long service life.
Piston 1 adopts with piston 23 that stainless steel material is integrally manufactured to be formed.Piston 1 adopts with piston 23 and is made into integration, and has motion advantage reliable, simple in structure, easy for installation.Stainless steel has good corrosion resistance, nonabradable advantage, makes piston 1 and piston 23 have long service life.
The sidewall of cylinder body 1a is provided with the inner chamber and the extraneous steam vent 1d that communicates with described cylinder body 1a, and steam vent 1d is between annular groove one 1b1 and annular groove two 1c1.The end of cylinder body 1a has slot to make way 1e, and slot to make way 1e is connected with cavity two 1c, makes cavity two 1c be connected comparatively unimpeded with the inlet end 8 of mould.
Notes blow blow moulding machine and need to cooperate blow mold to use, the inlet end 8 of blow mold is tubular, the one end is mould blow vent 8a, be provided with spring 9 in the inlet end 8, pole 10, one end of pole 10 is provided with the plug 11 that is complementary with blow vent 8a, the other end of pole 10 is resisted against on the piston 23, the cavity of inlet end 8 links to each other with cavity two 1c sealing, when blowing, pour gases at high pressure in cavity one 1b of cylinder, pushing piston 1 moves plug 11 toward the motion of piston 23 directions and pushing piston 23, extrusion spring 9, and make mould blow vent 8a be in the state of opening, at this moment, enter gases at high pressure in the cavity of inlet end 8, gases at high pressure are through the carry out blowing of blow vent 8a to mould, after product 12 typings, inlet end 8 stops air inlet and begins exhaust, because the diameter of piston 23 is little, the diameter of piston 1 is large, piston 1 can not pushed back by reaction force, pressure in the product 12 is discharged by blow vent 8a, in the time of die sinking, closes the air pressure of direct pushing piston 1, piston 1 resets with the thrust that piston 23 is subject to spring 9, in order to carry out work next time.Make blow vent 8a be in all the time the state of opening when the exhaust by the pole 10 of adopting two diameter cylinders 1 to promote the mould openings ends, make evacuation time shorter and exhaust is more thorough, prevent that deformation, the explosion of product 12 from appearring in product 12 because exhaust is not enough, the phenomenon such as splash, improved the qualification rate of product 12.
Owing between annular groove one 1b1 and annular groove two 1c1 steam vent 1d is set, make piston 1 and piston 23 when mobile, the air pressure of the cavity of the cylinder body 1a between annular groove one 1b1 and annular groove two 1c1 communicates with the external world all the time, avoid because of piston 1 in pushing piston 23 is turned right moving process, the volume of the cavity of the cylinder body 1a between annular groove one 1b1 and annular groove two 1c1 diminish the air drag that produces and make piston 1 again pushing piston 23 turn right mobile smooth and easy not.
Embodiment two
Present embodiment is basic identical with structure and the principle of embodiment one, different place is: shown in Fig. 2 and 3, this pre-exchange device of blowing also comprises the interlock top board 4 that is strip, the two ends of interlock top board 4 are equipped with two diameter cylinders 1 parallel and that arrange in the same way, the sidepiece of two diameter cylinders 1 is equipped with the groove 1f that passes for interlock top board 4, and groove 1f is connected with cavity two 1c.The same sidewall of interlock top board 4 all is resisted against on the corresponding piston 23.Two ends by interlock top board 4 arrange two two diameter cylinders 1, and interlock top board 4 can be simultaneously led in advance to the blow vent 8a of a plurality of blow molds, make these notes blow blow moulding machine and can install and overpay blow mold and produce simultaneously, have improved operating efficiency; The two ends of interlock top board 4 are embedded into respectively in the corresponding groove 1f, make interlock top board 4 have guide effect when mobile, and make the advantage simple in structure of this pre-exchange device of blowing.
Specific embodiment described herein only is to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has more used the terms such as two diameter cylinders 1, cylinder body 1a, cavity one 1b, annular groove one 1b1, cavity two 1c, annular groove two 1c1, steam vent 1d, slot to make way 1e, groove 1f, piston 1, piston 23, interlock top board 4, sealing ring 1, sealing ring 26, blowing grinding tool 7, inlet end 8, blow vent 8a, spring 9, pole 10, plug 11, product 12, do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present invention; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (10)
1. pre-exchange device of air blowing that notes blow blow moulding machine, it is characterized in that, comprise two diameter cylinders (1), described pair of diameter cylinder (1) comprises cylinder body (1a), described cylinder body (1a) has the diameter of the cavity one (1b) that is connected and cavity two (1c) and described cavity one (1b) greater than the diameter of described cavity two (1c), be respectively equipped with the piston one (2) and piston two (3) that is complementary with it in the described cavity one (1b) with in the described cavity two (1c), the outside of described piston two (3) is connected with the outside of described cylinder body (1a).
2. notes according to claim 1 blow the pre-exchange device of air blowing of blow moulding machine, it is characterized in that, this pre-exchange device of blowing also comprises the interlock top board (4) that is strip, the two ends of described interlock top board (4) are equipped with two diameter cylinders (1) parallel and that arrange in the same way, and the same sidewall of described interlock top board (4) all is resisted against on the corresponding described piston two (3).
3. notes according to claim 2 blow the pre-exchange device of air blowing of blow moulding machine, the sidepiece of described pair of diameter cylinder (1) is equipped with the groove (1f) that passes for described interlock top board (4), and described groove (1f) is connected with described cavity two (1c).
According to claim 1 and 2 or 3 described notes blow the pre-exchange device of air blowing of blow moulding machine, the inwall of described cavity one (1b) is provided with annular groove one (1b1), described annular groove one (1b1) is provided with sealing ring one (5).
5. notes according to claim 4 blow the pre-exchange device of air blowing of blow moulding machine, and the inwall of described cavity two (1c) is provided with annular groove two (1c1), and described annular groove two (1c1) is provided with sealing ring two (6).
6. notes according to claim 5 blow the pre-exchange device of air blowing of blow moulding machine, the sidewall of described cylinder body (1a) is provided with the steam vent (1d) that communicates with the inner chamber of described cylinder body (1a), and described steam vent (1d) is between described annular groove one (1b1) and the described annular groove two (1c1).
According to claim 1 and 2 or 3 described notes blow the pre-exchange device of air blowing of blow moulding machine, described piston one (2) adopts integrally manufactured with described piston two (3).
According to claim 1 and 2 or 3 described notes blow the pre-exchange device of air blowing of blow moulding machine, an end of described cylinder body (1a) has slot to make way (1e), described slot to make way (1e) is connected with described cavity two (1c).
According to claim 1 and 2 or 3 described notes blow the pre-exchange device of air blowing of blow moulding machine, described piston one (2) is 2-5 with the diameter ratio of described piston two (3).
According to claim 1 and 2 or 3 described notes blow the pre-exchange device of air blowing of blow moulding machine, described piston one (2) adopts stainless steel materials to make with described piston two (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210445028.7A CN102896766B (en) | 2012-11-08 | 2012-11-08 | Air blowing pre-ventilation device of injection blowing molding machine |
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| CN201210445028.7A CN102896766B (en) | 2012-11-08 | 2012-11-08 | Air blowing pre-ventilation device of injection blowing molding machine |
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| CN102896766A true CN102896766A (en) | 2013-01-30 |
| CN102896766B CN102896766B (en) | 2015-04-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103507266A (en) * | 2013-09-27 | 2014-01-15 | 江苏维达机械有限公司 | Core rod in hollow injection blow molding machine |
| CN107756614A (en) * | 2017-10-20 | 2018-03-06 | 河南新天合农牧机械有限公司 | Crevice board stripper apparatus |
| CN109366934A (en) * | 2018-10-30 | 2019-02-22 | 鹤山市昆阳塑料有限公司 | Three station injection blow moldings and injection blow molding process |
| CN109878060A (en) * | 2019-03-14 | 2019-06-14 | 张家港市绿环机械有限公司 | A kind of blowning installation of injection blow molding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107756614A (en) * | 2017-10-20 | 2018-03-06 | 河南新天合农牧机械有限公司 | Crevice board stripper apparatus |
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| CN102896766B (en) | 2015-04-15 |
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Denomination of invention: Air blowing pre-ventilation device of injection blowing molding machine Effective date of registration: 20171108 Granted publication date: 20150415 Pledgee: Industrial Commercial Bank of China Ltd Yuhuan branch Pledgor: Zhejiang Shuokang Packing Co.,Ltd. Registration number: 2017330000164 |
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