CN102962981A - Blow molding formation method of blow molding machine and blow molding die thereof - Google Patents
Blow molding formation method of blow molding machine and blow molding die thereof Download PDFInfo
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- CN102962981A CN102962981A CN2012105152177A CN201210515217A CN102962981A CN 102962981 A CN102962981 A CN 102962981A CN 2012105152177 A CN2012105152177 A CN 2012105152177A CN 201210515217 A CN201210515217 A CN 201210515217A CN 102962981 A CN102962981 A CN 102962981A
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Abstract
The invention relates to a blow molding formation method of a blow molding machine and a blow molding die thereof. The blow molding formation method is characterized by sequentially comprising the following steps of: step 1) after an extruder extrudes a parison, feeding the parison into a die assembly cavity consisting of a left half die and a right half die; arranging inserts along the circumference of a die assembly joint in a stage of assembling the left half die and the right half die, so that a sealed blow molding space is formed on the die assembly cavity; sequentially using a pre-blowing method and a main-blowing method to form the parison inside the die assembly cavity, and curing a product; and fixedly welding the inserts mounted on an insert bracket inside the product; and 2) discharging gas inside the product outward; opening the left half die and the right half die after an exhaust process; exiting the inserts and a core rod of the insert bracket from a die assembly joint position when the die is opened; then starting secondary blow molding after the left half die and the right half die are reclosed; and discharging a material of the parison when the inserts exit at the die assembly joint point at the trimming edge of the product, and sealing and removing a core pulling hole. The blow molding formation method has the advantages of good effect and high production efficiency; the produced product has no core pulling hole; and the difficult problem that the core pulling hole is sealed can be solved.
Description
Technical field
The present invention relates to a kind of blow moulding machine blow molding method and blow mold thereof.
Background technology
General blow moiding method is after the extruder extruded parisons, parison is put into mould, adopt pre-blowing and main method of blowing to allow parison under in-mold molding and curing in the stage that mould closes up, then mould is opened, take out goods, finish a product process.For the inside at goods being installed by inserts, inserts support (loosing core) parts are installed in bottom at mould, inserts is installed on the support, adopt pre-blowing and main method of blowing to allow parison under in-mold molding and curing in the stage of closing up of mould, and inserts is welded (fixing) in the inside of goods.When mould is opened, can stay core-drawing hole at the position of loosing core at the matched moulds seam place of mould.For some special products, automotive oil tank for example, parison is to be made of multilayer material, and is not easy very much in addition the barrier material that welds in material, after the inner installation of goods inserts, the sealing of the core-drawing hole that stays at the position of loosing core at matched moulds seam place is a difficult problem so.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, a kind of blow moulding machine blow molding method and supporting blow mold thereof are provided, the method is effective, and production efficiency is high, and the goods of producing do not have core-drawing hole to exist, and has also solved the difficult problem of core-drawing hole sealing.
For solving above technical problem, technical scheme of the present invention is: a kind of blow moulding machine blow molding method, its difference is: its its may further comprise the steps successively:
Step 1), behind the extruder extruded parisons, parison is sent in the matched moulds die cavity that is made of left half mold, right half mold, thereby be in the stage of closing up inserts along matched moulds seam circumferential arrangement and makes the matched moulds die cavity form sealing blowing space at left half mold, right half mold, then adopt successively pre-blowing, main method of blowing allow parison moulding and be cured as goods in the matched moulds die cavity, the inserts of installing on the inserts support is weldingly fixed on goods inside;
Step 2), then the goods internal gas discharges, exhaust finishes the rear left half mold, right half mold is opened, describedly insert, the plug of inserts support withdraws from the matched moulds seaming position when all opening with mould, follow left half mold, right half mold and again close up for the second time blowing of beginning, withdraw from inserting from the parison material of rear matched moulds seam crossing and get rid of on the overlap of goods and sealing elimination core-drawing hole.
A kind of blow mold, it comprises left half mold, right half mold, is used for placing the inserts support of inserts in the matched moulds die cavity, described inserts support comprises plug and is connected to the inserts of plug one end, its difference is: be provided with along matched moulds seam crossing circumferential arrangement on described left half mold, the right half mold and can make the matched moulds die cavity form inserting of sealing blowing space, described inserting withdrawed from when loosing core with described plug.
By above scheme, also comprise the guide rod that laterally is placed on respectively in left half mold, the right half mold, be provided with wedge and oil cylinder on described left half mold, the right half mold, wedge under hydraulic oil cylinder driving along moving up and down with the perpendicular direction of guide rod, one end of the side of described wedge and guide rod is in contact with one another, and the other end of described guide rod connects described inserting.
By above scheme, the perimembranous of described left half mold, right half mold is respectively arranged with pivoted arm and drives the oil cylinder of pivoted arm action, and described pivoted arm connects described inserting near an end of matched moulds seam, and an other end of described pivoted arm is hinged on left half mold or the right half mold.
By above scheme, the perimembranous of described left half mold, right half mold is hinged with respectively quadrangle hinge facing each other, and the side near the matched moulds seam on the described quadrangle hinge connects described inserting.
By above scheme, the perimembranous of described left half mold, right half mold is horizontally arranged with oil cylinder along the die sinking direction, and the end that the piston rod of described oil cylinder points to the matched moulds seam connects described inserting.
The contrast prior art, beneficial features of the present invention is as follows: the present invention adopts the method for secondary blowing that the blow molding process of inserts is installed in blow-molded container.At left and right half mold periphery inserting of can withdrawing from is set, under the cooperation of mould, finishes in blow-molded container the blow molding process of inserts being installed and can be not being stayed core-drawing hole at the position of loosing core of the matched moulds seam crossing of left and right half mold.
This blow moulding machine blow molding cooling means adopts two step blow molding processes, good cooling results, and production efficiency is high; Do not have the existence of core-drawing hole on the goods of producing, save the step of filling perforation, saved time and production cost; Also avoided simultaneously the situation of the complicated parison filling perforation of multilayer material difficulty.
Description of drawings
Fig. 1 is wedge formula blow mold structural representation;
Fig. 2 is oblique hinge type blow mold structural representation;
Fig. 3 is quad type blow mold structural representation;
Fig. 4 is cylinder type blow mold structural representation;
Fig. 5 is blow mold interface diagram;
Fig. 6 is that wedge formula blow mold closes up the mould schematic diagram for the first time;
Fig. 7 is that oblique hinge type blow mold closes up the mould schematic diagram for the first time;
Fig. 8 is that the quad type blow mold closes up the mould schematic diagram for the first time;
Fig. 9 is that the cylinder type blow mold closes up the mould schematic diagram for the first time;
Figure 10 is that wedge formula blow mold closes up the mould schematic diagram for the second time;
Figure 11 is that oblique hinge type blow mold closes up the mould schematic diagram for the second time;
Figure 12 is that the quad type blow mold closes up the mould schematic diagram for the second time;
Figure 13 is that the cylinder type blow mold closes up the mould schematic diagram for the second time;
Wherein: 1-left half mold, 2-right half mold, 3-insert, 4-inserts, 5-inserts support (5-1-plug), 6-parison, 7-matched moulds die cavity, 8-goods profile, 9-oil cylinder, 10-wedge, 11-guide rod, 12-pivoted arm, 13-quadrangle hinge, 14-piston rod.
The specific embodiment
By reference to the accompanying drawings the present invention is described in further detail below by the specific embodiment.
Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12 and Figure 13, a kind of blow moulding machine blow molding method of the present invention, it may further comprise the steps successively:
Step 1), behind extruder extruded parisons 6, parison 6 is sent in the matched moulds die cavity 7 that is made of left half mold, right half mold, thereby be in stage of closing up inserts along matched moulds seam circumferential arrangement and 3 makes matched moulds die cavity 7 form sealing blowing spaces at left half mold, right half mold, then adopt successively pre-blowing, main method of blowing allow parison 6 in the 7 interior moulding of matched moulds die cavity and be cured as goods, the inserts 4 of installing on the inserts support 5 is weldingly fixed on goods inside;
Step 2), then the goods internal gas discharges, exhaust finishes rear left half mold 1, right half mold 2 is opened, insert 3, the plug 5-1 of inserts support 5 withdraws from the matched moulds seaming position when all opening with mould, follow left half mold 1, right half mold 2 and again close up for the second time blowing of beginning, get rid of 3 parison material that withdraw from rear matched moulds seam crossing of inserting on the overlap of goods and sealing elimination core-drawing hole.
Please refer to Fig. 1-Figure 13, a kind of blow mold, it comprises left half mold 1, right half mold 2, is used for placing the inserts support 5 of inserts 4 in the matched moulds die cavity, described inserts support 5 comprises plug 5-1 and is connected to the inserts 4 of plug 5-1 one end, be provided with along matched moulds seam crossing circumferential arrangement on described left half mold 1, the right half mold 2 and can make that matched moulds die cavity 7 forms sealing blowing spaces insert 3, described inserting 3 withdrawed from when loosing core with described plug 5-1.
Concrete, please refer to Fig. 1, Fig. 5, Fig. 6 and Figure 10, embodiment of the invention wedge formula blow mold, it comprises left half mold 1, right half mold 2, oil cylinder 9, wedge 10, guide rod 11, insert 3 along the edge setting of mould interface, described left half mold 1, right half mold 2 interfaces are provided with matched moulds die cavity 7, the cavity face of described matched moulds die cavity 7 and goods profile 8 phase configuration, left half mold 1, be provided with oil cylinder 9 and wedge 10 on the right half mold 2, wedge 10 under oil cylinder 9 drives along with the perpendicular direction of guide rod 11 on, lower movement, the side of described wedge 10 is in contact with one another with an end that laterally is placed on mould inner guide 11, and the other end of described guide rod 11 is connecting inserts 3.
Concrete, please refer to Fig. 2, Fig. 5, Fig. 7 and Figure 11, the oblique hinge type blow mold of the embodiment of the invention, it comprises left half mold 1, right half mold 2, the perimembranous of left half mold 1, right half mold 2 is respectively arranged with pivoted arm 12 and drives the oil cylinder 9 of pivoted arm 12 actions, described pivoted arm 12 inserts 3 near the end connection of matched moulds seam, and an other end of described pivoted arm 12 is hinged on left half mold 1 or the right half mold 2.Described left half mold 1, right half mold 2 interfaces are provided with matched moulds die cavity 7, the cavity face of described matched moulds die cavity 7 and goods profile 8 phase configuration.
Concrete, please refer to Fig. 3, Fig. 5, Fig. 8 and Figure 12, embodiment of the invention quad type blow mold, it comprises left half mold 1, right half mold 2, the perimembranous of described left half mold 1, right half mold 2 is hinged with respectively quadrangle hinge 13 facing each other, side connection near the matched moulds seam on the described quadrangle hinge 13 inserts 3, and described left half mold 1, right half mold 2 interfaces are provided with matched moulds die cavity 7, the cavity face of described matched moulds die cavity 7 and goods profile 8 phase configuration.
Concrete, please refer to Fig. 4, Fig. 5, Fig. 9 and Figure 13, embodiment of the invention cylinder type blow mold, it comprises left half mold 1, right half mold 2, the perimembranous of described left half mold 1, right half mold 2 is horizontally arranged with oil cylinder 9 along the die sinking direction, the piston rod 14 of described oil cylinder 9 points to the end connection of matched moulds seam and inserts 3, and described left half mold 1, right half mold 2 interfaces are provided with matched moulds die cavity 7, the cavity face of described matched moulds die cavity 7 and goods profile 8 phase configuration.
Above content is the further description of the present invention being done in conjunction with concrete embodiment, can not assert that implementation of the present invention is confined to these explanations.For the those of ordinary skill of the technical field under the present invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. blow moulding machine blow molding method is characterized in that: its its may further comprise the steps successively:
Step 1), behind the extruder extruded parisons, parison is sent in the matched moulds die cavity that is made of left half mold, right half mold, thereby be in the stage of closing up inserts along matched moulds seam circumferential arrangement and makes the matched moulds die cavity form sealing blowing space at left half mold, right half mold, then adopt successively pre-blowing, main method of blowing allow parison moulding and be cured as goods in the matched moulds die cavity, the inserts of installing on the inserts support is weldingly fixed on goods inside;
Step 2), then the goods internal gas discharges, exhaust finishes the rear left half mold, right half mold is opened, describedly insert, the plug of inserts support withdraws from the matched moulds seaming position when all opening with mould, follow left half mold, right half mold and again close up for the second time blowing of beginning, withdraw from inserting from the parison material of rear matched moulds seam crossing and get rid of on the overlap of goods and sealing elimination core-drawing hole.
2. blow mold, it comprises left half mold, right half mold, is used for placing the inserts support of inserts in the matched moulds die cavity, described inserts support comprises plug and is connected to the inserts of plug one end, it is characterized in that: be provided with along matched moulds seam crossing circumferential arrangement on described left half mold, the right half mold and can make the matched moulds die cavity form inserting of sealing blowing space, described inserting withdrawed from when loosing core with described plug.
3. blow mold as claimed in claim 2, it is characterized in that: also comprise the guide rod that laterally is placed on respectively in left half mold, the right half mold, be provided with wedge and oil cylinder on described left half mold, the right half mold, wedge under hydraulic oil cylinder driving along moving up and down with the perpendicular direction of guide rod, one end of the side of described wedge and guide rod is in contact with one another, and the other end of described guide rod connects described inserting.
4. blow mold as claimed in claim 2, it is characterized in that: the perimembranous of described left half mold, right half mold is respectively arranged with pivoted arm and drives the oil cylinder of pivoted arm action, described pivoted arm connects described inserting near an end of matched moulds seam, and an other end of described pivoted arm is hinged on left half mold or the right half mold.
5. blow mold as claimed in claim 2, it is characterized in that: the perimembranous of described left half mold, right half mold is hinged with respectively quadrangle hinge facing each other, and the side near the matched moulds seam on the described quadrangle hinge connects described inserting.
6. blow mold as claimed in claim 2, it is characterized in that: the perimembranous of described left half mold, right half mold is horizontally arranged with oil cylinder along the die sinking direction, and the end that the piston rod of described oil cylinder points to the matched moulds seam connects described inserting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012105152177A CN102962981A (en) | 2012-08-31 | 2012-12-05 | Blow molding formation method of blow molding machine and blow molding die thereof |
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| CN201210316096.3 | 2012-08-31 | ||
| CN201210316096 | 2012-08-31 | ||
| CN2012105152177A CN102962981A (en) | 2012-08-31 | 2012-12-05 | Blow molding formation method of blow molding machine and blow molding die thereof |
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| CN102962981A true CN102962981A (en) | 2013-03-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286937A (en) * | 2013-05-23 | 2013-09-11 | 武汉亚普汽车塑料件有限公司 | One-step blow-molding technology for positioning vacuum forming inserting part |
| CN105922546A (en) * | 2016-04-30 | 2016-09-07 | 安徽志诚机电零部件有限公司 | Single blowing type blow molding process for automobile windshield washer |
| CN110667084A (en) * | 2019-10-14 | 2020-01-10 | 青岛科技大学 | Blow molding mold for hollow product with internal sealing |
| CN113997544A (en) * | 2021-10-18 | 2022-02-01 | 佛山市工正包装设备科技股份有限公司 | Forming method of PP small-caliber infusion bottle and infusion bottle |
| CN115416265A (en) * | 2022-11-03 | 2022-12-02 | 河北世昌汽车部件股份有限公司 | Two-piece clamping blow molding die and blow molding method |
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| CN203031934U (en) * | 2012-08-31 | 2013-07-03 | 武汉亚普汽车塑料件有限公司 | Blowing moulding mould with rotating arm type embedded blocks |
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| JPH07314540A (en) * | 1994-05-26 | 1995-12-05 | Shigeo Chino | Production of plastic bottle with grip |
| CN1960848A (en) * | 2004-06-03 | 2007-05-09 | 三井化学株式会社 | Mold apparatus for blow molding, manufacturing method of resin made hollow body using mold apparatus for blow molding and resin made hollow molded body made by its manufacturing method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286937A (en) * | 2013-05-23 | 2013-09-11 | 武汉亚普汽车塑料件有限公司 | One-step blow-molding technology for positioning vacuum forming inserting part |
| CN105922546A (en) * | 2016-04-30 | 2016-09-07 | 安徽志诚机电零部件有限公司 | Single blowing type blow molding process for automobile windshield washer |
| CN110667084A (en) * | 2019-10-14 | 2020-01-10 | 青岛科技大学 | Blow molding mold for hollow product with internal sealing |
| CN113997544A (en) * | 2021-10-18 | 2022-02-01 | 佛山市工正包装设备科技股份有限公司 | Forming method of PP small-caliber infusion bottle and infusion bottle |
| CN115416265A (en) * | 2022-11-03 | 2022-12-02 | 河北世昌汽车部件股份有限公司 | Two-piece clamping blow molding die and blow molding method |
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Application publication date: 20130313 |