CN101934583B - Mould device, equipment and method for producing plastic containers - Google Patents
Mould device, equipment and method for producing plastic containers Download PDFInfo
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- CN101934583B CN101934583B CN 201010281874 CN201010281874A CN101934583B CN 101934583 B CN101934583 B CN 101934583B CN 201010281874 CN201010281874 CN 201010281874 CN 201010281874 A CN201010281874 A CN 201010281874A CN 101934583 B CN101934583 B CN 101934583B
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Abstract
The invention discloses a mould device for producing plastic containers, which comprises a first mould half body and a second mould half body which are symmetrical mutually, wherein the first mould half body and the second mould half body are respectively provided with mould box bodies. The mould device for producing the plastic containers is characterized in that the inner side of each mould box body is provided with one or a plurality of cavities which are arranged in parallel, wherein each cavity comprises two sub-cavities arranged along the axial direction; and each mould box body is provided with a separation part for separating the two sub-cavities. In mould device for producing the plastic containers provided by the invention, the purpose of multiplying the number of one-time formed containers can be achieved by dividing the same cavity in the mould box body into the two sub-cavities arranged along the axial direction on the basis of not increasing the number of plastic tubular blanks so as to improve production efficiency and reduce the area occupied by the mould device. Simultaneously, the invention also provides equipment and a method for producing the plastic containers.
Description
Technical field
The present invention relates to a kind of mould, the equipment of plastic containers and method of producing plastic containers of producing.
Background technology
Present existing plastic containers normally utilize blow moulding machine blow molding (or vacuum forming) to make.This blow moulding machine comprises: support body, extrusion device, blowing device, die device, die drive unit and cutting member.Die device is arranged on the support body movably, and having first fixed bit and second fixed bit at support body, extrusion device is fixedly mounted on the support body, is arranged on the upside of die device first fixed bit, extrusion device is provided with parison handpiece near a side of die device, is used for extruding tubular parison.Blowing device is fixedly mounted on the support body, is arranged on the upside of die device second fixed bit, and blowing device is provided with the blow nozzle that can move towards die device, and blow nozzle is used for the inside blow gas to tubular parison.Die drive unit is arranged on the support body, and it is mobile between first fixed bit and second fixed bit to be used for driving described die device.Wherein, die device comprises, the first symmetrical mold half and second mold half, and second mold half moves relative to first mold half under the driving of die drive unit.First mold half and second mold half comprise respectively: Die Box, pipe are helped folder, 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, 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, being arranged on pipe movably helps between folder and the Die Box, in the interior corner that Sealing formboard is connected with Die Box, be provided with and the corresponding interior scrobicular ring of plastic containers bottleneck, be used for the bottleneck of cutting plastic containers and will be sealed in die device with the plastic containers of finishing.On support body, also be provided with cutting member, it is helped between the folder at the parison handpiece of extrusion device and the pipe of die device, help the position of folder a little more than pipe, and this cutting member can be on support body moves along the direction perpendicular to the plane of symmetry of first mold half and second mold half.
The using method of this blow moulding machine comprises: raw materials such as plastic pellet are put in the extrusion device, and extrusion device carries out fusion, mixing to plastic pellet, and will be pressed into parison handpiece through fusion, mixing melt and be shaped to tubular parison; Tubular parison is squeezed in the middle of first mold half and second mold half, when tubular parison reaches predetermined length, second mold half is slided and the merging of first mold half at second slideway.This moment, tubular parison helped the clamping action of folder to be clipped between the mold halves halfbody by pipe.At the support body cutting member that slides, the tubular parison on die device top is cut off.The tubular parison that is held is moved second fixed bit with mould from first fixed bit on the support body, make die device be positioned at the downside of blowing device.The decline of blow nozzle in the blowing device is entered the inside of tubular parison, extremely the top of Die Box in the mold half that pastes mutually.Compressed air is injected into the inside (or parison external vacuum) of parison, tubular parison is expanded and is adjacent to the die cavity chamber wall of Die Box, obtain the moulding parison.Blow nozzle in the blowing device is risen, separate with die device.The Sealing formboard that mold halves halfbody top in the sliding mould device is provided with is modelled as the shape of plastic containers bottleneck with the opening of moulding parison, obtains plastic containers.
Existing blow moulding machine, and in the equipment similar to this blow moulding machine action principle, be provided with the suitable inside die cavity of external structure of or a plurality of and plastic containers that are arranged side by side on the opposite face of the mold halves halfbody of die device simultaneously, be provided with the suitable parison handpiece of die cavity in one or more and the die device in the extrusion device, be provided with the blow nozzle of die cavity in one or more and the die device in the blowing device.Existing this structure, in the mould die cavity number more after a little while, production efficiency is not high; And in case when in same plane, being provided with a plurality of die cavity, can increasing the usable floor area of this blow moulding machine, and increase power consumption.Simultaneously, existing this, even production process is to carry out in clean room, also can't avoid internal tank by the danger of bacterium or other particle contamination.
Summary of the invention
The object of the invention is to provide a kind of mould of producing plastic containers, and the mould production efficiency that overcomes existing production plastic containers is low, the deficiency that usable floor area is big.
Another object of the present invention is to provide a kind of equipment of producing plastic containers, and the mould production efficiency that overcomes existing production plastic containers is low, and usable floor area is big, and high deficiency consumes energy.
For this reason, the invention provides a kind of die device of producing plastic containers, comprise the first symmetrical mold half and second mold half, first mold half and second mold half are respectively equipped with Die Box, each Die Box inboard is equipped with one or a plurality of die cavities of being arranged side by side, wherein each die cavity comprises two sub-die cavities arranging along axis direction, and Die Box is provided with the separation portion that two sub-die cavities are separated.
According to further improvement of the present invention, two sub-die cavities are configured to respectively to extend along two rightabouts of axis in the same die cavity, form the semi-ring opening at the outer surface of Die Box.
According to further improvement of the present invention, when two mold halfs merge, be arranged between two separation portions on the symmetrical Die Box and have the space, the width in space is not more than 2 times for the pipe thickness of the tubular parison of making described plastic containers.
According to further improvement of the present invention, mould also comprises: the parison holder, and for symmetrical two groups are separately positioned on the both sides that Die Box has opening; Sealing formboard, for symmetrical two groups are connected between Die Box and each the parison holder movably.
The present invention also provides a kind of equipment of producing plastic containers, comprising: support body and the die device and the blowing device that are arranged on the support body, and die device is above-mentioned die device; Blowing device comprises two groups of blow nozzles that can move towards die device, and two groups of blow nozzle groups are arranged on the both sides of Die Box respectively, and is arranged on the extending axially on the direction of die cavity in the Die Box.
According to further improvement of the present invention, blowing device also is provided with aseptic cover, and the blow nozzle group is arranged in the aseptic cover, and the blow nozzle group can penetrate aseptic cover and die device is used.
According to further improvement of the present invention, aseptic being covered with for the air intake passage that feeds aseptic gas.
According to further improvement of the present invention, aseptic cover is provided with a through hole near a side of die device, and blow nozzle passes from through hole.
According to further improvement of the present invention, the area of the cross section of aseptic cover is greater than the area of the cross section of die device, and the area of through hole is less than the area of the cross section of die device.
Simultaneously, the present invention also provides the as above method of equipment making plastic containers of a kind of use, comprises the steps: to prepare tubular parison; Tubular parison is squeezed in the middle of first mold half and second mold half, when the length of tubular parison surpasses the length of die cavity in the Die Box, merge first mold half and second mold half, tubular parison is sealed in respectively in two sub-die cavities of same die cavity;
Blowing filtrated air in two sub-die cavities of same die cavity in the die device respectively expands tubular parison and is adjacent to the chamber wall in the inner subtype of Die Box chamber, obtains the moulding parison; Cut off the redundance in the moulding parison, obtain plastic containers.
Further comprise according to further improvement of the present invention process of blowing filtrated air in the die device, use has the blowing device of aseptic cover, in aseptic cover, feed filtrated air, filtrated air is got rid of, to guarantee the aseptic of blowing process from the gap between described aseptic cover and the die device.
Advantage of the present invention: a kind of die device of producing plastic containers provided by the present invention, can be on the basis that does not increase plastic tube-shape parison quantity, by same die cavity in the Die Box being divided into two sub-die cavities arranging along axis direction with the purpose of the quantity that reaches the one-shot forming container that is multiplied, thereby enhance productivity, reduce the floor space of die device.A kind of equipment of producing plastic containers provided by the invention has used the die device according to production plastic containers of the present invention, thereby has improved production efficiency in this equipment simultaneously, reduced production cost, simultaneously, reduce the floor space of mould, and the cost of manufacture of mould.Simultaneously, install an aseptic cover in the blowing device of the equipment of this production plastic containers additional, formed an aseptic blowing space, possibility with the blowing opening that enters tubular parison that prevents bacterium and other particulates, up to the container top sealing, provide the process units that more meets aseptic volumetric standard.
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
Accompanying drawing constitute this specification a part, be used for further understanding accompanying drawing of the present invention and show the preferred embodiments of the present invention, and be used for illustrating principle of the present invention with specification.Among the figure:
Fig. 1 shows the structure cross-sectional schematic when the relative parison with second mold half of first mold half separates in the mould of the production plastic containers of the embodiment of the invention;
Structure cross-sectional schematic when Fig. 2 shows and merges according to the relative parison with second mold half of first mold half in the mould of the production plastic containers of the embodiment of the invention;
The one-tenth that Fig. 3 shows according to the embodiment of the invention produces the equipment die device of plastic containers and the simplified structure schematic diagram that extrusion device is used state;
The one-tenth that Fig. 4 shows according to the embodiment of the invention produces the equipment die device of plastic containers and the simplified structure schematic diagram that blowing device is used state;
Fig. 5 shows the structure cross-sectional schematic of first state that is used according to die device and blowing device in the equipment of the one-tenth product plastic containers of the embodiment of the invention; And
Fig. 6 shows the structure cross-sectional schematic of second state that is used according to die device and blowing device in the equipment of the one-tenth product plastic containers of the embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated; cited embodiment and accompanying drawing in specification of the present invention; only be in order to help to understand the present invention; and can not limit protection scope of the present invention, the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As Fig. 1 and shown in Figure 2, a kind of die device 4 of producing plastic containers is provided in one embodiment of the invention, this die device 4 comprises the first symmetrical mold half 41 and second mold half 43, first mold half 41 and second mold half 43 are respectively equipped with Die Box 45, Die Box 45 inboards are provided with one or a plurality of die cavities of being arranged side by side, wherein each die cavity includes two sub-die cavities 42 arranging along axis direction, and Die Box 45 is provided with the separation portion 44 that two sub-die cavities 42 are separated.Each subtype chamber 42 has and the corresponding inner-cavity structure of the external structure of prepared plastic containers in the present invention.When tubular parison 23 is put between first mold half and second mold half, merge first mold half 41 and second mold half 43, tubular parison 23 is split into two sub-parisons that are separately positioned in two sub-die cavities 42 this moment, is linked to each other by separated 44 wire parison that has flattened between these two sub-parisons.After two mold halfs merge, be arranged on the certain space that has between two separation portions on two symmetrical Die Boxes 45, this space is not more than 2 times of thickness of tubular parison 23 tube walls, to its objective is in order guaranteeing and to accompany between two mold halfs under the situation of tubular parison, still can combine closely, and make two sub-die cavity 23 each self sealss.In a kind of preferably embodiment of the present invention, two sub-die cavities 42 are configured to respectively to extend along two rightabouts of axis in the same die cavity, form semi-circular opening at the outer surface of Die Box 45.When first mold half 41 and 43 merging of second mold half, two semi-circular openings of Die Box 45 the same sides of two mutual minute surface symmetries are formed an annular opening, in order to feed gas, make the parison bulging in the subtype chamber 42 and are adjacent to die cavity chamber wall.Certainly the equipment for the production of mould of plastics provided by the present invention also can be the parison plastotype by with the parison vacuum pumping.In a kind of specific embodiment of the present invention, die device 4 also comprises parison holder 47 and Sealing formboard 46, and parison holder 47 is symmetrical two groups, is separately positioned on the both sides that Die Box 45 has opening; Sealing formboard 46 is symmetrical two groups, is connected movably between Die Box 45 and each the parison holder 47.So be made as two sub-die cavities that convenience is positioned on the same axis extended line and carried out the blow molding process processing simultaneously.
As Fig. 3 and Fig. 4 while, the present invention also provides a kind of equipment of producing plastic containers, in a kind of concrete embodiment of the present invention, the equipment of this production plastic containers comprises: support body 1, extrusion device 2, blowing device 3, die device 4, cutting member 5 and die drive unit (not shown).Die device 4 is arranged on the support body 1 movably, and have first fixed bit and second fixed bit at support body 1, extrusion device 2 is fixedly mounted on the support body 1, be arranged on the upside of die device 4 first fixed bits, extrusion device 2 is provided with parison handpiece 21 near a side of die device, is used for extruding tubular parison 23.Blowing device 3 is fixedly mounted on the support body 1, is arranged on the upside of die device 4 second fixed bits.Wherein die device 4 has used the die device for the production of plastic containers provided by the present invention.And in order to cooperate this die device for the production of plastic containers to change the structure of blowing device 3, blowing device 3 is set to comprise two groups of blow nozzle groups 31 that can move towards die device, two groups of blow nozzle groups 31 are separately positioned on the both sides of Die Box 45, and are arranged on that die cavity extends axially on the direction in the Die Box.So just, can finish the blowing step to the subtype base in two sub-die cavities in the die device 4 simultaneously.
As Fig. 5 and shown in Figure 6, for a kind of environment of producing aseptic volumetric standard that more meets can be provided, in a kind of concrete embodiment of the present invention, blowing device 3 also is provided with aseptic cover 33, blow nozzle group 31 is arranged in the aseptic cover 33, and blow nozzle group 31 can penetrate aseptic cover and die device 4 is used.So design, be for an aseptic external environment condition is provided to blow nozzle group 31, blow nozzle is used for being used with die device, it directly is inserted into the inside of parison, produce in the equipment of plastic containers to the blow nozzle group provides a gnotobasis in the present invention, guaranteed the sterile production process of plastic containers better.
In a kind of preferably embodiment of the present invention, aseptic cover 33 is provided with air intake passage 35, and this air intake passage 35 is used for feeding aseptic gas.In aseptic cover 33, constantly feed aseptic gas, can make extraneous air can't enter aseptic cover 33, so just can guarantee the gnotobasis that blow nozzle stores better.More preferably, aseptic cover 33 is provided with a through hole 37 near a side of die device, and blow nozzle 31 passes from through hole 37.The area of the cross section of aseptic cover 33 is greater than the area of the cross section of die device 4, and the area of through hole 37 is less than the area of the cross section of die device 4.As Fig. 5 and shown in Figure 6, when blowing device and die device are used, gas in the aseptic cover overflows from through hole 37, because the area of through hole 37 is less than the area of the cross section of die device 4, aseptic gas can only outwards circulate from the slit between aseptic cover and the die device, simultaneously, because the area of the cross section of aseptic cover 33 is greater than the area of the cross section of die device 4, this just makes the air that overflows walk towards the effluent away from blowing device 3, and this has just guaranteed the sterile working in the plastic containers forming process.Container by the equipment making of production plastic containers provided by the present invention is met more for the aseptic standard of pharmaceuticals industry.
It is to be noted; thisly in blowing device, increase aseptic cover 33; and feed the method for aseptic gas in the inside of aseptic cover 33; not only can be used in the equipment of production plastic containers provided by the present invention; simultaneously; also can use in the various device for preparing plastic containers in the prior art, protection scope of the present invention not only for equipment provided by the present invention, the structure of aseptic cover and the equipment of method all belong in protection scope of the present invention among any use the present invention.
In the present invention, a kind of method of using making plastic containers equipment making plastic containers provided by the present invention also is provided, a kind of concrete embodiment as shown in Figure 3 and Figure 4 is: use extrusion device 2 to make tubular parison 23, tubular parison 23 is squeezed between first mold half 41 and second mold half 43 by parison handpiece 21.After the length of tubular parison 23 surpasses the length of die cavity in the Die Box 45, first mold half 41 and second mold half 43 are merged, at this moment, the centre position of tubular parison 23 is pressed in two spaces between the separation portion 44 by the separation portion 44 on two symmetrical Die Boxes 45, forms two sub-parisons.The groove that the parison holder 47 that two sub-parisons are comprised in the die device 4 respectively is provided with adsorbs, and keeps the unimpeded of parison openings.This groove is identical with groove design of the prior art.With cutting member 5 tubular parison 2 is cut off.Die device 4 is moved to the relevant position that is used with blowing device, will feed aseptic gas in the aseptic cover in the blowing device, guarantee the sterile working in the blowing process.Simultaneously, the blow nozzle group that is positioned at die device 4 both sides in the blowing device 3 is moved towards die device respectively, be inserted into the inside of being helped the folder 47 subtype bases of fix by parison respectively, and with mould in opening on the Die Box 45 join, to subtype base inside blowing filtrated air.The subtype base is expanded and be close to the chamber wall in subtype chamber 42, thereby form container model.Stop the blowing of filtrated air in the blow nozzle, each group blow nozzle group is moved the inside that is recovered to aseptic cover 33, Sealing formboard in the die device 46 is mobile to the inside, merge symmetrical Sealing formboard 46, realizing the moulding of container top, and seal the opening of each subtype base 42.Stop the conveying of aseptic gas in the aseptic cover.Finish the whole production step.
In the present invention not to making the employed raw material of plastic containers, and some concrete operations parameters are elaborated in the production process, these contents are all consistent with the step of production plastic containers in the prior art, difference according to the use raw material, parameters such as the temperature that adopts in the specific operation process are different, this all is those skilled in the art's conventional techniques means, does not repeat them here.
The die device of production plastic containers provided by the present invention is not increasing plastic tube-shape parison quantity, on the basis of the length of tubular parison, has increased the quantity of one-shot forming ground container when only increasing moulding, has improved production efficiency greatly.Simultaneously, the equipment of production plastic containers provided by the present invention, not only improved production efficiency, simultaneously because the aseptic blowing position that covers on has covered whole mould, prevent the possibility that bacterium and other particulate enter the blowing opening, therefore be specially adapted to the production of the aseptic volumetric standard of pharmaceuticals industry.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, 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 doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. die device of producing plastic containers, comprise symmetrical first mold half (41) and second mold half (43), described first mold half (41) is respectively equipped with Die Box (45) with described second mold half (43), it is characterized in that, each described Die Box (45) inboard is equipped with one or a plurality of die cavities of being arranged side by side, and wherein each described die cavity comprises two sub-die cavities (42) of arranging along axis direction; Described Die Box (45) is provided with the separation portion (44) that two described subtype chambeies are separated; Two described subtype chambeies (42) are configured to respectively to extend along two rightabouts of axis in the same described die cavity, form semi-circular opening at the outer surface of described Die Box (45),
Described die device also comprises:
Parison holder (47), for symmetrical two groups are separately positioned on the both sides that described Die Box (45) has described semi-circular opening;
Sealing formboard (46), for symmetrical two groups are connected between described Die Box (45) and each the described parison holder (47) movably.
2. die device according to claim 1, it is characterized in that, when two described mold halfs (41,43) merge, be arranged between two described separation portions (44) on the symmetrical described Die Box (45) and have the space, the width in described space is not more than 2 times for the pipe thickness of the tubular parison of making described plastic containers.
3. equipment of producing plastic containers comprises: support body (1) and be arranged on die device (4) and blowing device (3) on the support body (1), it is characterized in that,
Described die device (4) is claim 1 or 2 described die devices;
Described blowing device (3), comprise two groups of blow nozzles (31) that can move towards described die device, two groups of described blow nozzle groups (31) are separately positioned on the both sides of described Die Box (45), and are arranged on the extending axially on the direction of die cavity described in the described Die Box (45).
4. equipment according to claim 3, it is characterized in that, described blowing device (3) also is provided with aseptic cover (33), and described blow nozzle group (31) is arranged in the aseptic cover (33), and described blow nozzle group penetrates described aseptic cover (33) and described die device (4) is used.
5. equipment according to claim 4 is characterized in that, described aseptic cover (33) is provided with for feeding aseptic gas air intake passage (35).
6. equipment according to claim 5 is characterized in that, described aseptic cover (33) is provided with a through hole (37) near a side of described die device, and described blow nozzle (31) passes from described through hole (37).
7. equipment according to claim 6 is characterized in that, the area of the cross section of described aseptic cover (33) is greater than the area of the cross section of described die device (4), and the area of described through hole (37) is less than the area of the cross section of described die device.
8. the method for each described equipment making plastic containers among a use such as the claim 4-7 is characterized in that, comprises the steps:
Preparation tubular parison (21);
It is middle with described second mold half (43) that tubular parison (21) is squeezed into described first mold half (41), when the length of described tubular parison (21) surpasses the length of die cavity in the Die Box, merge first mold half and second mold half, described tubular parison (21) is sealed in respectively in two described subtype chambeies (42) of same described die cavity;
Blowing filtrated air in two described subtype chambeies (42) of same die cavity in the described die device (4) respectively expands tubular parison (21) and is adjacent to the chamber wall in described Die Box (45) inner described subtype chamber (21), obtains the moulding parison; Cut off the redundance in the described moulding parison, obtain plastic containers.
9. method according to claim 8 is characterized in that, the process of blowing filtrated air further comprises in the described die device (4):
Use has the blowing device (3) of aseptic cover (33), feeds filtrated air in aseptic cover (33), and filtrated air is got rid of from the gap between described aseptic cover (33) and the described die device (4), to guarantee the aseptic of blowing process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010281874 CN101934583B (en) | 2010-09-15 | 2010-09-15 | Mould device, equipment and method for producing plastic containers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010281874 CN101934583B (en) | 2010-09-15 | 2010-09-15 | Mould device, equipment and method for producing plastic containers |
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| CN101934583A CN101934583A (en) | 2011-01-05 |
| CN101934583B true CN101934583B (en) | 2013-07-17 |
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| CN102350785A (en) * | 2011-08-26 | 2012-02-15 | 湖南千山制药机械股份有限公司 | Continuous blow moulding machine and forming method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005084920A1 (en) * | 2004-03-03 | 2005-09-15 | Constantinos Sideris | Moulding of plastics articles |
| CN101171117A (en) * | 2005-05-06 | 2008-04-30 | 尤尼洛依不锈镍铬钢米拉克龙股份有限公司 | Method and apparatus for blow molding aseptic containers |
| CN201776904U (en) * | 2010-09-15 | 2011-03-30 | 湖南千山制药机械股份有限公司 | Die device and equipment for producing plastic containers |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5783436A (en) * | 1980-11-14 | 1982-05-25 | Kanto Seiki Kk | Molding of sealed hollow body and its mold |
| FR2733176B1 (en) * | 1995-04-19 | 1997-06-27 | Sidel Sa | DEVICE FOR MANUFACTURING CONTAINERS IN THERMOPLASTIC MATERIAL BY BLOWING OR STRETCH-BLOWING |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005084920A1 (en) * | 2004-03-03 | 2005-09-15 | Constantinos Sideris | Moulding of plastics articles |
| CN101171117A (en) * | 2005-05-06 | 2008-04-30 | 尤尼洛依不锈镍铬钢米拉克龙股份有限公司 | Method and apparatus for blow molding aseptic containers |
| CN201776904U (en) * | 2010-09-15 | 2011-03-30 | 湖南千山制药机械股份有限公司 | Die device and equipment for producing plastic containers |
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