CN102896766B - Air blowing pre-ventilation device of injection blowing molding machine - Google Patents
Air blowing pre-ventilation device of injection blowing molding machine Download PDFInfo
- Publication number
- CN102896766B CN102896766B CN201210445028.7A CN201210445028A CN102896766B CN 102896766 B CN102896766 B CN 102896766B CN 201210445028 A CN201210445028 A CN 201210445028A CN 102896766 B CN102896766 B CN 102896766B
- Authority
- CN
- China
- Prior art keywords
- piston
- cavity
- air blowing
- exchange device
- moulding machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
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 blow pre-exchange device, particularly a kind of note blow blow moulding machine.
Background technology
It is a kind of equipment by injection moulding blow molding process, plastic grain being made into hollow container that note blows blow moulding machine, its specific works process is as follows: melt is injected into injection mold and forms parison, again parison is placed in blow mold, utilizes compressed air that the preform blowup in blow mold is become product.When blowing, the device opening the blow vent of blow mold is called pre-exchange device of blowing, and is used in the effect to air inlet during blowing and the exhaust after blowing.
The inlet end of blow mold is tubular, and its one end is mould blow vent, is provided with spring, pole in another inlet end, and one end of pole is provided with the plug matched with blow vent, and time under the effect of spring force, plug is to blow vent shutoff.As shown in Fig. 4 of 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 that the sealing state other end that is resisted against pole simultaneously on cylinder body 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 to be opened by blow vent, now inject gases at high pressure toward inlet end, blow molding is carried out to the parison in blow mold, the air pressure of blowing the gases at high pressure that blow moulding machine injects at air pressure and the inlet end of cylinder due to note is same source of the gas, when the air pressure of the air pressure of gases at high pressure being positioned at blow mold close to cylinder, pole movement is promoted under the effect of spring force, by plug by blow vent shutoff, even if now ventilation end stops air inlet, due to blow vent shutoff, gases at high pressure in blow mold act on plug, promote piston can not toward the motion of pole direction simultaneously, blow vent is made to be difficult to open, when the Leakage Gas pressure in product such as to only have reduce, mould blow vent just can open thorough exhaust, this needs the longer action cycle, and exhaust is not thorough, product is with regard to the distortion that easily bursts.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose the pre-exchange device of air blowing that a kind of note blow vent of the inlet end of blow vent blow mold being opened timely or close blows blow moulding machine.
Object of the present invention realizes by following technical proposal: a kind of note blows the pre-exchange device of air blowing of blow moulding machine, it is characterized in that, comprise two diameter cylinder, described two diameter cylinders comprise cylinder body, described cylinder body has the diameter that the cavity one that is connected and cavity two and the diameter of described cavity one are greater than described cavity two, be respectively equipped with the piston one and piston two that match with it in described cavity one with in described cavity two, the outside of described piston two is connected with the outside of described cylinder body.
Note blows blow moulding machine to be needed to coordinate blow mold to use, the inlet end of blow mold is tubular, its one end is mould blow vent, spring is provided with in inlet end, pole, one end of pole is provided with the plug matched with blow vent, the other end of pole is resisted against on piston two, the cavity of inlet end seals with cavity two and is connected, when blowing, gases at high pressure are poured in the cavity one of cylinder, promotion piston one moves toward piston two direction and promotes piston two and plug is moved, extrusion spring, and make mould blow vent be in the state opened, now, gases at high pressure are entered in the cavity of inlet end, gases at high pressure carry out blowing through blow vent to mould, after product approval, inlet end stops air inlet starting exhaust, because the diameter of piston two is little, the diameter of piston one is large, piston one can not be pushed back by reaction force, pressure in product is discharged by blow vent, while die sinking, close the air pressure directly promoting piston one, the thrust that piston one and piston two are subject to spring resets, to carry out work next time.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned note, this pre-exchange device of blowing also comprises the interlock top board in strip, the two ends of described interlock top board are equipped with parallel and two diameter cylinders arranged in the same way, and the same sidewall of described interlock top board is all resisted against on corresponding described piston two.Two two diameter cylinders are set by the two ends of top board of linking, interlock top board is led to the blow vent of multiple blow mold simultaneously in advance, enable this note blow blow moulding machine and install and overpay blow mold and produce simultaneously, improve operating efficiency.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned note, the sidepiece of described two diameter cylinders is equipped with the groove passed for described interlock top board, and described groove is connected with described cavity two.The two ends of interlock top board are embedded in corresponding groove respectively, make interlock top board have guide effect when mobile, and make the simple advantage of structure of this pre-exchange device of blowing.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned note, 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 to be formed with sealing ring one and seals, and when piston one moves, the inwall of the cavity one of cylinder body does not wear and tear, and enables cylinder body have longer service life.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned note, 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 to be formed with sealing ring two and seals, and when piston two moves, the inwall of the cavity two of cylinder body does not wear and tear, and enables cylinder body have longer service life.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned note, the sidewall of described cylinder body is provided with the steam vent communicated with the inner chamber of described cylinder body, and described steam vent is between described annular groove one and 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 with annular groove two communicates with the external world all the time, avoid because piston one is turned right in moving process at promotion piston two, the volume of the cavity of the cylinder body between annular groove one and annular groove two diminishes the air drag that produces and make piston promote piston two again and again to turn right the smooth and easy not of movement.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned note, described piston one adopts integrally manufactured with described piston two.Piston one and piston two adopt and are made into integration, and have the advantage that motion is reliable, structure is simple, easy for installation.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned note, one 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, cavity two is connected comparatively unimpeded with the inlet end of mould.
Blow in the pre-exchange device of air blowing of blow moulding machine at above-mentioned note, 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 note, 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 longer service life.
Compared with prior art, the pre-exchange device of air blowing that this note blows blow moulding machine has the following advantages:
1, the pole by adopting two diameter cylinder to promote mould openings end makes blow vent be in when being vented the state opened all the time, make evacuation time shorter and be vented more thorough, preventing product from occurring the phenomenon such as deformation, explosion, splashing of product because being vented deficiency, improve the qualification rate of product;
2, cavity one and cavity two arrange annular groove one and annular groove two respectively, make to produce sealing between the piston of sealing ring respectively at correspondence, and opposing seal circle is arranged on piston, and the inwall of cylinder body does not wear and tear, and enables cylinder body have longer service life;
3, relative to the single diameter cylinder of employing, the air compressor of high pressure additionally need not be set, reduce energy consumption;
4, the pre-exchange device of air blowing that this note blows blow moulding machine also has the advantage that motion is reliable, structure is simple, easy for installation.
Accompanying drawing explanation
Fig. 1 is air blowing pre-exchange device that this note blows blow moulding machine cross-sectional schematic when implementing a blowing.
Fig. 2 is the cross-sectional schematic one that this note blows the pre-exchange device enforcement two of air blowing of blow moulding machine.
Fig. 3 is the cross-sectional schematic two that this note blows 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.
In 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, link 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.
Detailed description of the invention
Be below 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 embodiments.
Embodiment one
As shown in Figure 1, a kind of note blows the pre-exchange device of air blowing of blow moulding machine, and comprise two diameter cylinder 1, two diameter cylinder 1 comprises 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 match 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, and annular groove one 1b1 is embedded with sealing ring 1; The inwall of cavity two 1c is provided with annular groove two 1c1, and annular groove two 1c1 is embedded with sealing ring 26.The sidepiece of piston 1 contacts to be formed with sealing ring 1 and seals, and when piston 1 moves, the inwall of cavity one 1b of cylinder body 1a does not wear and tear, and enables cylinder body 1a have longer service life.The sidepiece of piston 23 contacts to be formed with sealing ring 26 and seals, and when piston 23 moves, the inwall of cavity two 1c of cylinder body 1a does not wear and tear, and enables cylinder body 1a have longer service life.
Piston 1 and piston 23 adopt that stainless steel material is integrally manufactured to be formed.Piston 1 and piston 23 adopt and are made into integration, and have the advantage that motion is reliable, structure is simple, easy for installation.Stainless steel has good corrosion resistance, nonabradable advantage, makes piston 1 and piston 23 have longer service life.
The sidewall of cylinder body 1a is provided with the steam vent 1d communicated with the external world with the inner chamber of described cylinder body 1a, and steam vent 1d is between annular groove one 1b1 and annular groove two 1c1.One 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.
Note blows blow moulding machine to be needed to coordinate blow mold to use, the inlet end 8 of blow mold is in tubular, its one end is mould blow vent 8a, spring 9 is provided with in inlet end 8, pole 10, one end of pole 10 is provided with the plug 11 matched with blow vent 8a, the other end of pole 10 is resisted against on piston 23, the cavity of inlet end 8 seals with cavity two 1c and is connected, when blowing, gases at high pressure are poured in cavity one 1b of cylinder, promotion piston 1 moves toward piston 23 direction and promotes piston 23 and plug 11 is moved, extrusion spring 9, and make mould blow vent 8a be in the state opened, now, gases at high pressure are entered in the cavity of inlet end 8, gases at high pressure carry out blowing through blow vent 8a to mould, after product 12 sizing, inlet end 8 stops air inlet starting exhaust, because the diameter of piston 23 is little, the diameter of piston 1 is large, piston 1 can not be pushed back by reaction force, pressure in product 12 is discharged by blow vent 8a, while die sinking, close the air pressure directly promoting piston 1, the thrust that piston 1 and piston 23 are subject to spring 9 resets, to carry out work next time.Blow vent 8a is made to be in when being vented the state opened all the time by the pole 10 adopting two diameter cylinder 1 to promote mould openings end, make evacuation time shorter and be vented more thorough, preventing product 12 from occurring the phenomenon such as deformation, explosion, splashing of product 12 because being vented deficiency, improve the qualification rate of product 12.
Owing to arranging steam vent 1d between annular groove one 1b1 and annular groove two 1c1, make piston 1 and piston 23 when mobile, the air pressure of the cavity of the cylinder body 1a between annular groove one 1b1 with annular groove two 1c1 communicates with the external world all the time, avoid because piston 1 is turned right in moving process at promotion piston 23, the volume of the cavity of the cylinder body 1a between annular groove one 1b1 and annular groove two 1c1 diminishes the air drag that produces and make piston 1 promote piston 23 again to turn right the smooth and easy not of movement.
Embodiment two
The present embodiment with the structure of embodiment one and principle substantially identical, different place is: as shown in Figures 2 and 3, this pre-exchange device of blowing also comprises the interlock top board 4 in strip, the two ends of interlock top board 4 are equipped with parallel and two diameter cylinders 1 arranged in the same way, the sidepiece of two diameter cylinder 1 is equipped with the groove 1f passed for interlock top board 4, and groove 1f is connected with cavity two 1c.The same sidewall of interlock top board 4 is all resisted against on corresponding piston 23.Two two diameter cylinders 1 are set by the two ends of top board 4 of linking, interlock top board 4 can be led to the blow vent 8a of multiple blow mold simultaneously in advance, enable this note blow blow moulding machine and install and overpay blow mold and produce simultaneously, improve operating efficiency; The two ends of interlock top board 4 are embedded in corresponding groove 1f respectively, make interlock top board 4 have guide effect when mobile, and make the simple advantage of structure of this pre-exchange device of blowing.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the term such as two diameter cylinder 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 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (10)
1. a note pre-exchange device of air blowing that blows blow moulding machine, it is characterized in that, comprise two diameter cylinder (1), described two diameter cylinders (1) comprise cylinder body (1a), described cylinder body (1a) has the cavity one (1b) and cavity two (1c) that are connected, the diameter of described cavity one (1b) is greater than the diameter of described cavity two (1c), and described cavity two (1c) is for being communicated with inlet end (8), the piston one (2) and piston two (3) that match with it is respectively equipped with in described cavity one (1b) with in described cavity two (1c), the outside of described piston two (3) is connected with the outside of described cylinder body (1a).
2. note according to claim 1 blows 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) in strip, the two ends of described interlock top board (4) are equipped with parallel and two diameter cylinders (1) arranged in the same way, and the same sidewall of described interlock top board (4) is all resisted against on corresponding described piston two (3).
3. note according to claim 2 blows the pre-exchange device of air blowing of blow moulding machine, the sidepiece of described two diameter cylinders (1) is equipped with the groove (1f) passed for described interlock top board (4), and described groove (1f) is connected with described cavity two (1c).
4. the note according to claim 1 or 2 or 3 blows 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), and described annular groove one (1b1) is provided with sealing ring one (5).
5. note according to claim 4 blows the pre-exchange device of air blowing of blow moulding machine, 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. note according to claim 5 blows 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) communicated with the inner chamber of described cylinder body (1a), and described steam vent (1d) is between described annular groove one (1b1) and described annular groove two (1c1).
7. the note according to claim 1 or 2 or 3 blows the pre-exchange device of air blowing of blow moulding machine, and described piston one (2) adopts integrally manufactured with described piston two (3).
8. the note according to claim 1 or 2 or 3 blows the pre-exchange device of air blowing of blow moulding machine, one end of described cylinder body (1a) has slot to make way (1e), and described slot to make way (1e) is connected with described cavity two (1c).
9. the note according to claim 1 or 2 or 3 blows the pre-exchange device of air blowing of blow moulding machine, and described piston one (2) is 2-5 with the diameter ratio of described piston two (3).
10. the note according to claim 1 or 2 or 3 blows the pre-exchange device of air blowing of blow moulding machine, and described piston one (2) adopts stainless steel material to make with described piston two (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445028.7A CN102896766B (en) | 2012-11-08 | 2012-11-08 | Air blowing pre-ventilation device of injection blowing molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445028.7A CN102896766B (en) | 2012-11-08 | 2012-11-08 | Air blowing pre-ventilation device of injection blowing molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102896766A CN102896766A (en) | 2013-01-30 |
| CN102896766B true CN102896766B (en) | 2015-04-15 |
Family
ID=47569398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210445028.7A Active CN102896766B (en) | 2012-11-08 | 2012-11-08 | Air blowing pre-ventilation device of injection blowing molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102896766B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103507266B (en) * | 2013-09-27 | 2015-11-18 | 江苏维达机械有限公司 | A kind of note blows the plug in blow moulding machine |
| CN107756614B (en) * | 2017-10-20 | 2023-10-17 | 河南新天合农牧机械有限公司 | Stripper for leak plate |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2515003Y (en) * | 2001-11-16 | 2002-10-09 | 蔡桂森 | Synchronous limit structure of closing draw series vat |
| CN2902678Y (en) * | 2006-04-29 | 2007-05-23 | 亿利达机器(深圳)有限公司 | Air blowing mechanism of hollow injection moulding shaping equipment |
| CN201155440Y (en) * | 2007-05-10 | 2008-11-26 | 李玉根 | Diameter-changing double acting piston type compressor |
| CN102653132A (en) * | 2012-04-24 | 2012-09-05 | 扬州盛世模塑科技有限公司 | Multi-station air cylinder for blowing mould |
| CN202895672U (en) * | 2012-11-08 | 2013-04-24 | 浙江硕康包装有限公司 | Air-blowing pre-ventilating device for injection blow hollow molding machine |
-
2012
- 2012-11-08 CN CN201210445028.7A patent/CN102896766B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102896766A (en) | 2013-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102896766B (en) | Air blowing pre-ventilation device of injection blowing molding machine | |
| CN201588838U (en) | Cascade hydraulic cylinder | |
| CN101337411B (en) | Rubber transmission belt vulcanizing device | |
| CN202895672U (en) | Air-blowing pre-ventilating device for injection blow hollow molding machine | |
| FR2921582B1 (en) | INSTALLATION FOR BLOWING CONTAINERS IN THERMOPLASTIC MATERIAL | |
| CN104108091B (en) | The air cushion buffering structure of nailing machine gun head | |
| CN203792635U (en) | Silica gel die structure for preventing product from being adhered to die | |
| CN103737790B (en) | A kind of foaming with gas device | |
| CN202753422U (en) | Improved blow molding cooling device for blow molding machine | |
| CN204222154U (en) | A kind of energy-conservation stretch blow system based on PP infusion bottle blow moulding machine | |
| CN2834875Y (en) | Sealing mechanism of bottle blowing machine | |
| CN202967555U (en) | Powder conveying device | |
| CN205324446U (en) | Efficient pipe fitting cut -out press | |
| CN201493982U (en) | Vacuum-pumping die | |
| CN205013245U (en) | Novel water -cooling cylinder components | |
| CN210679554U (en) | Ejection mechanism | |
| CN201309245Y (en) | Automatic plastic bottle blowing machine | |
| CN204136356U (en) | Initiative exhaust precise injection molding mould | |
| CN202388660U (en) | Novel exhaust structure of plastic mold | |
| CN202805629U (en) | Composite blowing needle | |
| CN105781937A (en) | Internal unloading structure applied to automobile air compressors | |
| CN207485757U (en) | A kind of pneumohydraulic pressure-cylinder | |
| CN203125803U (en) | Capsule clamping device of vulcanizing machine mold | |
| CN201552694U (en) | Compound pneumatic unload device of automobile mold | |
| CN201588839U (en) | Hydraulic cylinder capable of automatically increasing pressure force |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
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 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |