CN102285096A - Continuous blow molding machine and molding method thereof - Google Patents

Continuous blow molding machine and molding method thereof Download PDF

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Publication number
CN102285096A
CN102285096A CN2011102494587A CN201110249458A CN102285096A CN 102285096 A CN102285096 A CN 102285096A CN 2011102494587 A CN2011102494587 A CN 2011102494587A CN 201110249458 A CN201110249458 A CN 201110249458A CN 102285096 A CN102285096 A CN 102285096A
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parison
die
handpiece
blow molding
box
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CN2011102494587A
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Chinese (zh)
Inventor
刘燕
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Hunan China Sun Pharmaceutical Machinery Co Ltd
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Hunan China Sun Pharmaceutical Machinery Co Ltd
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Priority to CN2011102494587A priority Critical patent/CN102285096A/en
Publication of CN102285096A publication Critical patent/CN102285096A/en
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Abstract

The invention provides a continuous blow molding machine and a molding method thereof. The continuous blow molding machine comprises a frame body, an extrusion device (10), a parison machine head (20), a blow nozzle (30) and a mold device (40), wherein the extrusion device (10) is arranged on the frame body, the blow nozzle (30) is movably arranged in the parison machine head (20) along the extrusion direction of a parison, the mold device (40) is arranged below the parison machine head (20), and the parison machine head (20) is arranged at a discharge port of the extrusion device (10) along the extrusion direction of the parison in a reciprocating manner. According to the continuous blow molding machine provided by the invention, the generation of molding excess stocks can be greatly reduced, the utilization rate of molding materials can be effectively improved, and the production cost can be lowered.

Description

Continuous blow molding machine and forming method thereof
Technical field
The present invention relates to the blow molding field in the mould of plastics, particularly, relate to a kind of continuous blow molding machine and forming method thereof.
Background technology
Existing plastic containers normally utilize blow moulding machine blow molding (or vacuum forming) to make.This blow molding machine comprises: support body, extrusion device, parison handpiece device, blowing device, die device, die drive unit, cutting member and stripper apparatus.Wherein die device is arranged on the support body movably along folding mould direction, and has first fixed bit and second fixed bit on support body.Extrusion device is fixedly mounted on the support body, and is arranged on the upside of first fixed bit of die device.Extrusion device is provided with parison handpiece near a side of die device, is used to extrude tubular parison.
Blowing device is fixedly mounted on the support body, and is arranged on the upside of die device second fixed bit.Blowing device is provided with the blow nozzle that can move towards die device, and blow nozzle is used for compressed air is injected tubular parison, in order to the inflation parison, makes it to be adjacent to the mold cavity moulding.Die drive unit is arranged on the support body, drives with die device to be connected, and is used to drive the die device matched moulds or divides mould.
Die device comprises the first symmetrical mold half and second mold half.First and second mold half under the driving of die drive unit mutually in opposite directions or relatively move.First mold half and second mold half comprise respectively: Die Box, pipe are helped folder and Sealing formboard.The inboard of Die Box is provided with and the corresponding inner die cavity of the peripheral structure of plastic containers; Pipe helps folder to be arranged on the Die Box, and is positioned at the side near the parison handpiece of extrusion device, and inside is provided with the suitable semi-circular groove of extruding with extrusion device of parison diameter; Sealing formboard is arranged on pipe movably along folding mould direction and helps between folder and the Die Box.
Existing blow molding machine, and in the equipment similar to this blow molding machine action principle, it is to keep certain opening shape after keeping tubular parison to be cut off that pipe is helped the folder effect, so that blow nozzle can enter tubular parison inside from open channel.Tubular parison to the Sealing formboard first half, belongs to the tailing of plastic containers after the moulding from cut-off part.Mold bottom also has the overlap or the clout of one section container for satisfying demoulding needs in addition.Each production cycle all will produce above-mentioned clout.Two sections clouts are added up, and account for the significant proportion of plastic containers finished product, cause the utilization rate of plastic pellet not high, and waste of material is serious.
Summary of the invention
The object of the invention is to provide a kind of continuous blow molding machine and forming method thereof, can reduce the generation of moulding clout in a large number, effectively improves the moulding material utilization rate, reduces production costs.
For achieving the above object, according to an aspect of the present invention, a kind of continuous blow molding machine is provided, comprise: extrusion device, parison handpiece, blow nozzle and die device, blow nozzle is extruded direction along parison and is arranged in the parison handpiece movably, die device is arranged on the parison handpiece below, and parison handpiece is extruded the discharging opening that direction can reciprocatingly be arranged on extrusion device along parison.
Further, parison handpiece also comprises the parison handpiece controlling organization of moving direction, position and the speed of controlling parison handpiece.
Further, blow nozzle also comprises the blow nozzle controlling organization of moving direction, position and the speed of controlling blow nozzle.
Further, die device comprises mould shrouding that is arranged on the parison handpiece below and the Die Box that is arranged on mould shrouding downside and is adjacent, wherein but the mould shrouding comprises the first mould shrouding that cooperatively interacts and the second mould shrouding of die sinking and matched moulds, but Die Box comprises first Die Box that cooperatively interacts and second Die Box of die sinking and matched moulds, comprise at least one die cavity in the die device, the shaping position of mould shrouding and Die Box adapts.
Further, blow molding machine also comprises the stripper apparatus that is arranged on die device inside continuously, and stripper apparatus comprises push rod or the compressed air ejecting mechanism that is arranged on the die device sidewall.
Further, blow molding machine also comprises the slip cutting member that is arranged on the frame continuously.
According to a further aspect in the invention, also provide a kind of continuous blow molding method, comprising: S1, parison handpiece extrude tubular parison to die device, the die device matched moulds; S2, parison handpiece continue to extrude tubular parison, move in the opposite direction along the parison side of extruding simultaneously; S3, the die device die sinking, stripper apparatus ejects finished product, and parison handpiece is extruded direction along parison and is moved.
Further, step S1 comprises: S11, parison handpiece is extruded tubular parison between first Die Box and second Die Box of the Die Box of die device, when tubular parison length reaches the moulding Len req, and first Die Box and the second Die Box matched moulds.
Further, comprise after step S2: S21, blow nozzle drop to the gas passage porch behind first Die Box and the second Die Box matched moulds, and compressed air is injected parison inside, make the parison swell moulding; S22, blow nozzle rises, and separates the Sealing formboard matched moulds of die device with die device.
Further, step S3 comprises: S31, and the die device die sinking, the stripper apparatus in the die device ejects shaped article; S32, parison handpiece is extruded direction with blow nozzle along parison and is moved to the residing initial position at step S1, begins next production cycle.
Continuous blow molding machine according to the present invention has following beneficial effect:
1. parison handpiece can be extruded the discharging opening that direction is arranged on extrusion device with moving around along parison, make in forming process, parison handpiece can be continuous the required tubular parison length of output moulding primary production, the assurance product is continuously shaped, save pipe and helped folder, reduce the generation of moulding clout in a large number, improved the parison material utilization rate, reduced production cost.
2. parison handpiece comprises the parison handpiece controlling organization of moving direction, position and the speed of controlling parison handpiece, can carry out control accurately and effectively to parison handpiece, make the state of parison handpiece to control, what mould was produced can be handling stronger, guarantees the quick and precisely continuously shaped of product.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.With reference to figure, the present invention is further detailed explanation below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the continuous perspective view of blow molding machine according to an embodiment of the invention;
Fig. 2 is the preceding broken section structural representation of beginning matched moulds of continuous blow molding machine according to an embodiment of the invention;
Fig. 3 is the continuous broken section structural representation during the blow molding machine blow molding according to an embodiment of the invention;
Fig. 4 is the continuous broken section structural representation during the complete matched moulds of blow molding machine according to an embodiment of the invention;
Fig. 5 is the continuous broken section structural representation during the blow molding machine die sinking according to an embodiment of the invention; And
Fig. 6 is the continuous broken section structural representation of the continuous blow molding of blow molding machine according to an embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
The direction of arrow is represented air current flow direction or parison handpiece moving direction among the figure.
As depicted in figs. 1 and 2, according to embodiments of the invention, blow molding machine comprises extrusion device 10, parison handpiece 20, blow nozzle 30, die device 40 and slip cutting member 60 continuously.
Extrusion device 10 is arranged on the support body (figure does not show), is used to receive raw materials such as plastic pellet, and these raw materials are carried out fusion, mixing, makes the blowing raw material become flow regime, these raw materials is pressed in the parison handpiece 20 again.
Parison handpiece 20 also is arranged on the frame, and can extrude direction along parison and move around.Parison handpiece 20 is arranged on the discharging opening place of extrusion device 10, is used to accept the blowing raw material of outflow in the extrusion device 10.Parison handpiece 20 is shaped to tubular parison 50 with the fused raw material of accepting, and with the direction output of tubular parison 50 to die device 40.Also be provided with parison handpiece controlling organization (figure does not show) on the parison handpiece 20.The parison handpiece controlling organization can be controlled moving direction, position and the translational speed of parison handpiece 20, be convenient to the motion of parison handpiece 20 is controlled, make parison handpiece 20 have accurately controlled motion, guarantee stable the carrying out of continuous blowing of continuous blow molding machine.In the present embodiment, extrusion device 10 and parison handpiece 20 can be set to be synchronized with the movement, also extrusion device 10 can be fixedly installed on the frame, and be communicated with by connecting line between extrusion device 10 and the parison handpiece 20, fused raw material enters in the parison handpiece 20 by connecting pipeline.Parison handpiece 20 is extruded direction along parison and is moved around, and extrusion device 10 and being failure to actuate.
Blow nozzle 30 is arranged on the parison handpiece 20, and entreats in the heart from the mould of parison handpiece 20 and to pass.Blow nozzle 30 is operationally along the extending axially of tubular parison 50, and can extrude back and forth movement on the direction along parison, and briquetting pressure is provided when guaranteeing blow molding.The outer end of blow nozzle 30 can be connected to air duct or vacuum passage.When the outer end of blow nozzle 30 is connected to air duct, operation blow nozzle 30, and make the inner port of blow nozzle 30 be positioned at tubular parison 50, and when tubular parison 50 moulding, in tubular parison 50, be blown into compressed air, make tubular parison 50 expansion moldings.When the outer end of blow nozzle 30 is connected to vacuum passage, then operate blow nozzle 30, and make the inner port of blow nozzle 30 lead to the periphery of tubular parison 50, when tubular parison 50 moulding, in die cavity, feed vacuum, make tubular parison 50 be adjacent to the forming cavity moulding.In the present embodiment, blow nozzle 30 is communicated to compressed air.
Blow nozzle 30 also includes the blow nozzle controlling organization (figure does not show) of moving direction, position and the speed of control blow nozzle 30.The blow nozzle controlling organization can be adjusted the moving direction of blow nozzle 30 according to the difference of the residing formative stage of continuous blow molding machine, suitable translational speed when moving, blow nozzle 30 is provided, and can accurately control the position of blow nozzle 30, guarantee carrying out smoothly of blow molding.
Die device 40 is arranged on the frame, comprises mould shrouding 41 and Die Box 42.Mould shrouding 41 is arranged on parison handpiece 20 belows, comprises the first mould shrouding 411 and the second mould shrouding 412.The first mould shrouding 411 and the second mould shrouding 412 are symmetrical, and are oppositely arranged.The semi-ring groove die cavity of the part bottleneck of the difference moulding plastics container in the first mould shrouding 411 and the second mould shrouding 412.Mould shrouding 41 is connected with the mould shrouding driving mechanism (scheming not show) of the control first mould shrouding 411 and 412 die sinkings of the second mould shrouding or matched moulds, by mould shrouding driving mechanism the each several part of mould shrouding 41 is synchronized with the movement and controls.
Die Box 42 is arranged on the downside of mould shrouding 41, and with mould shrouding 41 adjacency.It is identical with the folding mould direction of the first mould shrouding 411 and the second mould shrouding 412 that but Die Box 42 includes the folding mould direction of first Die Box 421 that cooperatively interacts of die sinking and matched moulds and second Die Box, 422, the first Die Boxes 421 and second Die Box 422.First Die Box 421 and second Die Box 422 are symmetrical, and are oppositely arranged.The inside die cavity of half main body of the difference moulding plastics container in first Die Box 421 and second Die Box 422.The groove die cavity of the inside die cavity of first Die Box 421 and second Die Box 422 and the first mould shrouding 411 and the second mould shrouding 412 forms die cavity 423 jointly.Die Box 42 is connected with the Die Box driving mechanism (figure does not show) of control first Die Box 421 and 422 die sinkings of second Die Box or matched moulds; and being synchronized with the movement of the each several part by Die Box driving mechanisms control Die Box 42, guarantee carrying out smoothly of folding mould.
Die cavity 423 forms the semi-ring configured openings at the upper surface of Die Box, the corresponding setting of semi-ring groove of this semi-ring configured openings and Sealing formboard 41 inboards, when being used for blow molding as gas passage.
Also can be provided with a plurality of die cavities 423 in mould shrouding 41 and the Die Box 42, a plurality of plastic containers of moulding have simultaneously improved shaping efficiency.
Also be provided with stripper apparatus (figure does not show) on the sidewall of die device 40, be used for the plastic containers after the moulding are ejected from mold cavity, guarantee the smooth demoulding of plastic containers.Stripper apparatus can comprise the push rod that is arranged on the die device sidewall, also can comprise the compressed air ejecting mechanism, by feeding compressed air plastic containers is peeled off die cavity 423.
Slip cutting member 60 is arranged on the support body, between parison handpiece 20 and die device 40, and a little more than mould shrouding 41.This slip cutting member 60 can move back and forth along the matched moulds direction on support body, and the tubular parison 50 on die device 40 tops can be cut off.
Utilize the method for the continuous blow molding of continuous blow molding machine of the present invention as follows:
In conjunction with referring to Fig. 2, raw materials such as plastic pellet to be put in the extrusion device 10,10 pairs of plastic pellets of extrusion device carry out fusion, mixing, and melt is pressed into parison handpiece 20 is shaped to tubular parison 50.Tubular parison 50 is delivered in the die device 40 that is in die opening state after extruding in the parison handpiece 20, and makes tubular parison 50 reach the moulding Len req.
In conjunction with referring to Fig. 3, two parts (i.e. first Die Box 421 and second Die Box 422) of the Die Box 42 of die device 40 are carried out matched moulds, parison handpiece 20 is done the counter motion consistent with extruded velocity along the direction of extruding of tubular parison 50 simultaneously, away from Die Box 42.Operate blow nozzle 30 simultaneously, and make blow nozzle 30 extend out to the upper gas passage place of the Die Box 42 behind the matched moulds.Open air pressure switch, compressed air is fed in the tubular parison 50 in Die Box 42 die cavities, tubular parison 50 is expanded and be adjacent to the chamber wall of the die cavity 423 in the Die Box 42, obtain molding cavity.
In conjunction with referring to Fig. 4, with 30 withdrawals of the blow nozzle in the parison handpiece 20, separate with die device 40, two parts (i.e. the first mould shrouding 411 and the second mould shrouding 412) with mould shrouding 41 carry out matched moulds then, the shape that makes the opening of molding cavity mould the bottleneck that becomes plastic containers obtains plastic containers.
In conjunction with referring to Fig. 5 and Fig. 6, after the length of the tubular parison 50 that parison handpiece 20 is newly extruded reached next time the moulding Len req, parison handpiece 20 stopped to move.The mould shrouding drive mechanism first mould shrouding 411 and the second mould shrouding 412, Die Box drive mechanism first Die Box 421 and second Die Box 422 are done the die sinking campaign simultaneously, mould is opened, the stripper apparatus that is positioned at die device 40 feeds compressed air to cavity body of mould, moulding plastics container and die cavity 423 are peeled off, and the moulding plastics container is ejected.Parison handpiece 20 is extruded the identical direction rapid movement of direction along parison then, gets back to the initial position of this process, carries out next production process, so carries out the production action of plastic containers continuously.
Slip cutting member 60 generally speaking and be failure to actuate has only when producing and finishes when shutting down, and just in the motion of support body upper edge matched moulds direction, the tubular parison of die device 40 tops is cut off.
As can be seen from the above description, parison handpiece can be extruded the discharging opening that direction is arranged on extrusion device with moving around along parison, make in forming process, parison handpiece can be continuous the required tubular parison length of output moulding primary production, the assurance product is continuously shaped, has saved pipe and has helped folder, has reduced the generation of moulding clout in a large number, improve the parison material utilization rate, reduced production cost.Parison handpiece comprises the parison handpiece controlling organization of moving direction, position and the speed of controlling parison handpiece, can carry out control accurately and effectively to parison handpiece, make the state of parison handpiece to control, what mould was produced can be handling stronger, guarantees the quick and precisely continuously shaped of product.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. continuous blow molding machine, comprise: extrusion device (10), parison handpiece (20), blow nozzle (30) and die device (40), described blow nozzle (30) is extruded direction along parison and is arranged on movably in the described parison handpiece (20), described die device (40) is arranged on described parison handpiece (20) below, it is characterized in that described parison handpiece (20) is extruded the discharging opening that direction can reciprocatingly be arranged on described extrusion device (10) along described parison.
2. continuous blow molding machine according to claim 1 is characterized in that, described parison handpiece (20) also comprises the parison handpiece controlling organization of moving direction, position and the speed of the described parison handpiece of control (20).
3. continuous blow molding machine according to claim 1 is characterized in that, described blow nozzle (30) also comprises the blow nozzle controlling organization of moving direction, position and the speed of the described blow nozzle of control (30).
4. continuous blow molding machine according to claim 1, it is characterized in that, described die device (40) comprises the mould shrouding (41) that is arranged on described parison handpiece (20) below, and the Die Box (42) that is arranged on described mould shrouding (41) downside and is adjacent, wherein said mould shrouding (41) but comprise die sinking and the first mould shrouding (411) that cooperatively interacts and the second mould shrouding (412) of matched moulds, described Die Box (42) but comprise die sinking and first Die Box (421) that cooperatively interacts and second Die Box (422) of matched moulds, comprise at least one die cavity (423) in the described die device (40), described mould shrouding (41) adapts with the shaping position of described Die Box (42).
5. according to each described continuous blow molding machine in the claim 1 to 4, it is characterized in that, also comprise being arranged on the inner stripper apparatus of described die device (40), described stripper apparatus comprises push rod or the compressed air ejecting mechanism that is arranged on described die device (40) sidewall.
6. according to each described continuous blow molding machine in the claim 1 to 4, it is characterized in that, also comprise the slip cutting member (60) that is arranged on the described frame.
7. a continuous blow molding method is characterized in that, comprising:
S1, parison handpiece (20) extrude tubular parison (50) to die device (40), die device (40) matched moulds;
S2, parison handpiece (20) continues to extrude tubular parison (50), and described parison handpiece (20) is along moving in the opposite direction with the parison side of extruding simultaneously;
S3, die device (40) die sinking, stripper apparatus ejects finished product, and parison handpiece (20) is extruded direction along parison and is moved.
8. continuous blow molding method according to claim 7 is characterized in that step S1 comprises:
S11, parison handpiece (20) is extruded tubular parison (50) between first Die Box (421) and second Die Box (422) of the Die Box (42) of die device (40), when tubular parison (50) length reaches the moulding Len req, first Die Box (421) and second Die Box (422) matched moulds.
9. continuous blow molding method according to claim 8 is characterized in that, comprises after step S2:
S21, blow nozzle (30) drop to the gas passage porch behind first Die Box (421) and second Die Box (422) matched moulds, and compressed air is injected parison inside, make the parison swell moulding;
S22, blow nozzle (30) rises, and separates Sealing formboard (41) matched moulds of die device (40) with die device (40).
10. continuous blow molding method according to claim 7 is characterized in that step S3 comprises:
S31, die device (40) die sinking, the stripper apparatus in the die device (40) ejects shaped article;
S32, parison handpiece (20) is extruded direction with blow nozzle (30) along parison and is moved to residing initial position in step S1, begins next production cycle.
CN2011102494587A 2011-08-26 2011-08-26 Continuous blow molding machine and molding method thereof Pending CN102285096A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103660252A (en) * 2013-12-05 2014-03-26 楚天科技股份有限公司 Blow molding equipment for transfusion plastic bottle with mouth pipe
CN104723535A (en) * 2013-12-19 2015-06-24 楚天科技股份有限公司 Plastic container continuous forming integrated machine
CN104723534A (en) * 2013-12-19 2015-06-24 楚天科技股份有限公司 Continuous forming equipment for plastic containers
CN109648824A (en) * 2019-01-29 2019-04-19 广州纯元科技有限公司 A kind of blowing device for plastic barrel production
CN109702991A (en) * 2019-01-25 2019-05-03 包宇峰 A kind of plastic barrel production equipment convenient for blow molding
CN113103551A (en) * 2021-04-16 2021-07-13 马鞍山康福塑料制品有限公司 Plastic bottle extrusion moulding equipment
CN115816799A (en) * 2023-02-16 2023-03-21 张家港市凯塑机械有限公司 Full-automatic extrusion hollow blow molding machine and blow molding process

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Publication number Priority date Publication date Assignee Title
CN201056050Y (en) * 2006-11-15 2008-05-07 王自强 Vertically lifting type plastics extrusion blow machine
CN101966748A (en) * 2010-09-15 2011-02-09 湖南千山制药机械股份有限公司 Mould device, equipment and method for producing plastainer
CN202264383U (en) * 2011-08-26 2012-06-06 湖南千山制药机械股份有限公司 Continuous plastic blowing moulding machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201056050Y (en) * 2006-11-15 2008-05-07 王自强 Vertically lifting type plastics extrusion blow machine
CN101966748A (en) * 2010-09-15 2011-02-09 湖南千山制药机械股份有限公司 Mould device, equipment and method for producing plastainer
CN202264383U (en) * 2011-08-26 2012-06-06 湖南千山制药机械股份有限公司 Continuous plastic blowing moulding machine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103660252A (en) * 2013-12-05 2014-03-26 楚天科技股份有限公司 Blow molding equipment for transfusion plastic bottle with mouth pipe
CN104723535A (en) * 2013-12-19 2015-06-24 楚天科技股份有限公司 Plastic container continuous forming integrated machine
CN104723534A (en) * 2013-12-19 2015-06-24 楚天科技股份有限公司 Continuous forming equipment for plastic containers
CN104723535B (en) * 2013-12-19 2017-08-04 楚天科技股份有限公司 The continuously shaped all-in-one of plastic containers
CN109702991A (en) * 2019-01-25 2019-05-03 包宇峰 A kind of plastic barrel production equipment convenient for blow molding
CN109702991B (en) * 2019-01-25 2023-09-22 沂水金誉塑业有限公司 Plastic drum production facility convenient to blow molding
CN109648824A (en) * 2019-01-29 2019-04-19 广州纯元科技有限公司 A kind of blowing device for plastic barrel production
CN109648824B (en) * 2019-01-29 2021-03-02 广州纯元科技有限公司 Blow molding device for plastic barrel production
CN113103551A (en) * 2021-04-16 2021-07-13 马鞍山康福塑料制品有限公司 Plastic bottle extrusion moulding equipment
CN115816799A (en) * 2023-02-16 2023-03-21 张家港市凯塑机械有限公司 Full-automatic extrusion hollow blow molding machine and blow molding process

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Application publication date: 20111221