CN106738794A

CN106738794A - Blow moulding machine

Info

Publication number: CN106738794A
Application number: CN201611188477.2A
Authority: CN
Inventors: 陈晓慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-12-20
Filing date: 2016-12-20
Publication date: 2017-05-31

Abstract

The present invention relates to blow moulding machine, including：Inflatable body, extrusion mechanism, the first mould, the first driver, the second mould, the second driver and cooling body；Inflatable body includes air pump and appendix, and air pump is connected with appendix；Extrusion mechanism includes heater, barrel and extruded tube, and appendix is at least partially arranged in inner cylinder；Cooling body includes cooler and cooling tube, and cooler is connected with cooling tube, and cooling tube is connected with appendix.When being extruded during hot fluid plastic is through tapping channel, first mould and the second mould matched moulds, hot fluid plastic is clamped, appendix is blown hot fluid plastic inflation and is connected to the inner surface of the first mould and the second mould, cooling body is lowered the temperature for appendix, enable appendix to plastics fast cooling, enable the plastics rapid shaping, and then enable that thicker hot fluid plastic rapid shaping is the plastic product with larger thickness, and then effectively improve the hardness of plastic product.

Description

Blow moulding machine

Technical field

The present invention relates to be blow molded production technical field, more particularly to blow moulding machine.

Background technology

Traditional plastic products, the mode of shaping includes injection moulding or blow molding.The process of injection moulding is by heat Thermoplastic plastic or thermosetting material are made the main former of variously-shaped plastic products using mould for plastics, are injected into Type is realized by injection machine and mould.And after sealant is extruded when being blow molded, the wind produced by boasting using machine Power, plastomer is blown the die cavity for being attached to definite shape, so as to be made product.

Compared to injection, the efficiency of blowing is higher, and the cost of blowing is relatively low.But blowing is only applicable to the less modeling of thickness Glue product, and the general hardness of plasthetics of blow molding is relatively low, it is impossible to meet hardness requirement.And be molded due to relatively costly, Inefficiency, it is impossible to meet production requirement.

The content of the invention

Based on this, it is necessary to for traditional blow moulding equipment thermal plastic due to cannot rapid shaping, cause blow molding Plastic products thickness is smaller, a kind of relatively low defect of hardness, there is provided blow moulding machine.

A kind of blow moulding machine, including：Inflatable body, extrusion mechanism, the first mould, the first driver, the second mould, second drive Dynamic device and cooling body；

The inflatable body includes air pump and appendix, and the air pump is connected with the appendix；

The extrusion mechanism includes heater, barrel and extruded tube, and the heater is connected with one end of the barrel, institute Stating extruded tube includes inner cylinder and outer barrel, and the inner cylinder is arranged in the outer barrel, and the inner cylinder and the outer barrel interval setting, Form tapping channel between the inner cylinder and the outer barrel, the one end of the tapping channel and the barrel away from the heater Connection, the appendix is at least partially arranged in the inner cylinder；

First mould is connected with first driver drives；

Second mould is connected with second driver drives；

First mould and second mould are oppositely arranged, and first mould is towards the second mould direction It is provided with the first bearing surface, second mould is described towards the second bearing surface is provided with the direction of first mould First bearing surface and second bearing surface activity are abutted；

The cooling body includes cooler and cooling tube, and the cooler is connected with the cooling tube, the cooling tube Connected with the appendix.

In one embodiment, first driver is the first cylinder.

In one embodiment, second driver is the second cylinder.

In one embodiment, the cooling tube is provided with stop valve.

In one embodiment, internal diameter of the internal diameter of the cooling tube more than the appendix.

Above-mentioned blow moulding machine, when being extruded during hot fluid plastic is through tapping channel, the first mould and the second mould matched moulds will Hot fluid plastic is clamped, and appendix is blown hot fluid plastic inflation and is connected to the inner side of the first mould and the second mould Surface, cooling body is lowered the temperature for appendix so that appendix can be to plastics fast cooling so that the plastics can be rapid-result soon Type, and then enable that thicker hot fluid plastic rapid shaping is the plastic product with larger thickness, and then effectively carry The hardness of plastic product high.

Brief description of the drawings

Fig. 1 is a direction structure schematic diagram of the blow moulding machine of an embodiment；

Fig. 2 is a direction structure schematic diagram of the appendix with extruded tube of an embodiment；

Fig. 3 is the inflatable body of an embodiment and the attachment structure schematic diagram of cooling body；

Fig. 4 is a direction structure schematic diagram of the blow moulding machine of another embodiment；

Fig. 5 is the cross-sectional view of the appendix with lasso of an embodiment；

Fig. 6 is the cross-sectional view of the lasso of another embodiment.

Specific embodiment

For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing Give better embodiment of the invention.But, the present invention can be realized in many different forms, however it is not limited to herein Described implementation method.On the contrary, the purpose for providing these implementation methods is to make to understand more the disclosure Plus it is thorough comprehensive.

It should be noted that when element is referred to as " being arranged at " another element, it can directly on another element Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ", For illustrative purposes only, it is unique implementation method to be not offered as " right side " and similar statement.

Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool The purpose of the implementation method of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more The arbitrary and all of combination of related Listed Items.

For example, a kind of blow moulding machine, including：Inflatable body, extrusion mechanism, the first mould, the first driver, the second mould, Second driver and cooling body；The inflatable body includes air pump and appendix, and the air pump is connected with the appendix；Institute Stating extrusion mechanism includes heater, barrel and extruded tube, and the heater is connected with one end of the barrel, the extruded tube bag Include inner cylinder and outer barrel, the inner cylinder is arranged in the outer barrel, and the inner cylinder and the outer barrel interval setting, the inner cylinder and Tapping channel is formed between the outer barrel, the one end of the tapping channel with the barrel away from the heater connects, described Appendix is at least partially arranged in the inner cylinder；First mould is connected with first driver drives；Described second Mould is connected with second driver drives；First mould and second mould are oppositely arranged, first mould Being provided with the first bearing surface towards the second mould direction, second mould is towards on the direction of first mould The second bearing surface is provided with, first bearing surface and second bearing surface activity are abutted；The cooling body includes cooling Device and cooling tube, the cooler are connected with the cooling tube, and the cooling tube is connected with the appendix.

In the present embodiment, when being extruded during hot fluid plastic is through tapping channel, the first mould and the second mould matched moulds will Hot fluid plastic is clamped, and appendix is blown hot fluid plastic inflation and is connected to the inner side of the first mould and the second mould Surface, cooling body is lowered the temperature for appendix so that appendix can be to plastics fast cooling so that the plastics can be rapid-result soon Type, and then enable that thicker hot fluid plastic rapid shaping is the plastic product with larger thickness, and then effectively carry The hardness of plastic product high.

As shown in Figure 1, Figure 2 and Figure 3, it is the blow moulding machine 10 of an embodiment, including：Inflatable body 100, extrusion mechanism 200th, the first mould 310, the first driver 410, the second mould 320 and the second driver 420；The inflatable body 100 includes Air pump 150 and appendix 110, the air pump 150 are connected with the appendix 110；The extrusion mechanism 200 includes heater (not shown), barrel 210 and extruded tube 220, the heater are connected with one end of the barrel 210, and the extruded tube 220 is wrapped Inner cylinder 221 and outer barrel 222 are included, the inner cylinder 221 is arranged in the outer barrel 222, i.e., described outer barrel 222 coats the inner cylinder 221；And the inner cylinder 221 and the interval setting of the outer barrel 222, discharging is formed between the inner cylinder 221 and the outer barrel 222 logical Road 223, for example, the outer barrel and the inner cylinder are cylinder, and both have same central axis；The tapping channel 223 One end with the barrel 210 away from the heater connects, i.e. one end of the barrel 210 connects the heater, another End connects the tapping channel, also, one end of the barrel 210 connects with the heater, and the other end is logical with the discharging Road is connected；The appendix 110 is at least partially arranged in the inner cylinder 221；First mould 310 drives with described first The drive connection of device 410；Second mould 320 and the drive connection of the second driver 420；That is, first driver 410 are used to drive first mould towards second mould with the drive connection of the first mould 310, first driver The motion of tool direction, second driver 420 and the drive connection of the second mould 320, second driver are used to drive Second mould is moved towards the first mould direction, and first mould 310 and second mould 320 set relatively Put, first mould is provided with the first bearing surface, second mould is provided with the second bearing surface, first bearing surface and The second bearing surface activity is abutted；For example, first mould 310 is being provided with towards the direction of the second mould 320 One bearing surface 311, second mould 320 towards being provided with the second bearing surface 321 on the direction of first mould 310, First bearing surface 311 and the activity of second bearing surface 321 are abutted.

In the present embodiment, blow moulding machine 10 also includes magazine, magazine and storing channel connection, specifically, plastics Raw material under the heating of heater, forms hot fluid plastic in magazine, and the hot fluid plastic is in molten condition Flowable plastic liquid, hot fluid plastic is extruded along barrel 210, and is circulated to going out between inner cylinder 221 and outer barrel 222 Material passage 223 is simultaneously extruded.For example, the heater is electric heater, for example, the heater is resistance heater, and for example, institute Heater is stated for electromagnetic heater.For example, blow moulding machine 10 also includes motor and screw rod, motor and screw drive are connected, and screw rod sets It is placed in barrel 210, electric motor driven screw is rotated, and then drives the hot fluid plastic in barrel 210 to extrude to the He of inner cylinder 221 Tapping channel 223 between outer barrel 222.

Because appendix 110 is arranged in inner cylinder 221, and tapping channel 223 is located at the outside of inner cylinder 221, so, through going out The hot fluid plastic of the material extrusion of passage 223 is then sheathed on the outside of inner cylinder 221, and the hot fluid plastic of extrusion is sheathed on inner cylinder Outside 221, that is, the hot fluid plastic is sheathed on the outside of appendix 110.For example, the appendix 110 is also arranged in the material In cylinder 210.

For example, the first mould 310 and the second mould 320 are arranged at the lower section of the extruded tube 220, and for example, the first mould 310 and second mould 320 be movably set in the lower section of the extruded tube 220, for example, the mould of first mould 310 and second 320 lower sections for being symmetricly set in the extruded tube 220, for example, the mould 320 of first mould 310 and second is squeezed on described The axle center for going out cylinder 220 is symmetricly set in the lower section of the extruded tube 220, for example, the middle part of first bearing surface 311 and described The medial recess of the second bearing surface 321 is set so that the first mould 310 and the second mould 320 are internally formed matched moulds cavity, this Sample, after hot fluid plastic is extruded, the first driver 410 and the second driver 420 drive the first mould 310 and respectively The move toward one another of two molds 320 so that the first mould 310 and the matched moulds of the second mould 320.

When the first mould 310 and the second 320 matched moulds of mould, the first bearing surface 311 and the second bearing surface 321 are mutually supported Connect so that hot fluid plastic is sealed in the first mould 310 and the second mould 320, and hot fluid plastic is away from extruded tube 220 One end sealed under the matched moulds of the first mould 310 and the second mould 320, and near extruded tube 220 one end then with appendix 110 connections, air pump 150 works, and is blown in the thermotropism fluid plastic of appendix 110 so that hot fluid plastic expands and abuts In the first mould 310 and the inner surface of the second mould 320, and then cause that hot fluid plastic is expanded to and the first mould 310 The shape matched with the second mould 320,

It is noted that because hot fluid plastic has mobility, therefore, in the state of hotter, it is difficult to fixed Type, and in order that hot fluid plastic can quick cooling and shaping, in one embodiment, as shown in figure 3, blow moulding machine 10 and also Including cooling body 500, the cooling body 500 includes cooler 510 and cooling tube 520, and the cooler 510 is cold with described But pipe 520 is connected, and the cooling tube 520 is connected with the appendix 110.In the present embodiment, when hot fluid plastic is through discharging When being extruded in passage 223, the first mould 310 and the matched moulds of the second mould 320 clamp hot fluid plastic, and appendix 110 is blown By hot fluid plastic inflation and the inner surface of the first mould 310 and the second mould 320 is connected to, cooling body 500 is defeated Tracheae 110 is lowered the temperature so that appendix 110 can be to plastics fast cooling so that the plastics can rapid shaping, and then cause compared with Thick hot fluid plastic can rapid shaping be the plastic product with larger thickness, and then effectively improve the strong of plastic product Degree.

In order to carry gas for appendix 110 provides cooling, for example, the cooler 510 is evaporator, for example, the steaming Hair device is provided with some fins, for example, the evaporator is arranged at one end of the cooling tube 520, for example, the blow moulding machine 10 Also include compressor and condenser, the compressor and the condenser and the evaporator are sequentially communicated, and the evaporation Device is also connected with compressor, for example, refrigerant is provided with the compressor, by compressor so that refrigerant compresses, after compression Refrigerant evaporates in evaporator, absorbs substantial amounts of heat so that the fin sharp temperature drop on evaporator, and then causes and evaporation The temperature of gas is reduced in the cooling tube 520 of device connection, and the gas after cooling then is delivered into appendix 110 so that Appendix 110 is blowed cool air into hot fluid plastic so that hot fluid plastic being capable of fast cooling shaping.

For example, the cooler 510 is cooling generator, for example, the cooler 510 includes liquid nitrogen supply container, the liquid nitrogen Liquid nitrogen is filled with container, the liquid nitrogen supply container is connected with cooling tube 520, the liquid nitrogen is absorbing a large amount of in gasification Heat, and then with fast cooling cooling effect, so, when liquid nitrogen is circulated in appendix 110, the temperature urgency of appendix 110 Play declines so that the gas temperature of the thermotropism fluid plastic of appendix 110 blowout is very low, and then enables the fast quickly cooling of plastics But it is molded, and then enables that plastic product is molded under thicker thickness, effectively increases the hardness of plastic product.

For example, referring again to Fig. 3, the appendix 110 includes the first body 111, the second body 112 and the 3rd body 113, first body 111, second body 112 and the 3rd body 113 are sequentially communicated, the 3rd body 113 One end away from second body 112 connects with the air pump 150, and first body 111 is arranged at the inner cylinder 221 It is interior, for example, second body 112 is connected with the cooling tube 520, for example, the internal diameter of second body 112 is more than described First body 111, for example, the internal diameter of second body 112 is more than the 3rd body 113, for example, second body 112 internal diameter is gradually reduced from the one end for being close to the 3rd body 113 to the one end near first body 111, for example, Second body 112 has truncated cone-shaped structure, for example, as shown in figure 3, second body 112 is the round platform of boring Shape.The gas of the blowout of air pump 150 is delivered to the second body 112 by the 3rd body 113, and is concentrated to first from the second body 112 Body 111 blows out, because the internal diameter of the second body 112 near described first near one end of the 3rd body 113 from managing One end of body 111 is gradually reduced so that gas greater concentration of can blow to the first body 111, and due to second body 112 In truncated cone-shaped, be conducive to cooling tube 520 that cooling gas are delivered in the second body 112, cooling gas are with the second body 112 Interior gas flow direction is circulated to the first body 111, and is blown into hot fluid plastic by the first body 111, and then causes Cooling gas in cooling tube 520 can be efficiently blown out to hot fluid plastic so that hot fluid plastic is quickly cooled to Type.

In order to drive the first mould 310 and the second mould 320 so that the first mould 310 and the matched moulds of the second mould 320, In one embodiment, first driver 410 is the first cylinder, for example, second driver 420 is the second cylinder, the One cylinder is used to drive the first mould 310 to be moved towards the second mould 320, and the second cylinder is used to drive the direction of the second mould 320 First mould 310 is moved, the first mould 310 and the move toward one another of the second mould 320, and then matched moulds, the first mould 310 and the second mould Tool 320 is located remotely from each other motion so that the first mould 310 and the second mould 320 are opened.In a further embodiment, first drive Device 410 is the first motor, and the second driver 420 is the second motor, and the first motor passes through the first screw mandrel and institute State the first mould 310 to connect, the second motor is connected by the second screw mandrel with the second mould 320, and the first motor is used for The first mould 310 is driven to be moved towards the second mould 320, the second motor is used to drive the second mould 320 towards the first mould Tool 310 is moved, by the driving of the first motor and the second motor so that the first mould 310 and the energy of the second mould 320 Enough be brought into close contact so that matched moulds is better, so cause hot fluid plastic end sealing effectiveness more preferably.

It should be understood that when hot fluid plastic from extruded tube 220 when extruding, temperature is higher, is conducive to hot The flowing of fluid plastic, should not now lower the temperature to hot fluid plastic, it is to avoid hot fluid plastic solidification, in order to rationally control Cooling of the cooling tube processed 520 to appendix 110, in one embodiment, the cooling tube 520 is provided with stop valve, for example, institute Stop valve is stated for cooling tube 520 described in opening and closing of fault, it is cold to go to pipe inside to be interconnected when stop valve is opened, through cooling Gas after device 510 is cooled down can be delivered to appendix 110, as appendix 110 is blown out to hot fluid plastic, work as cut-off When valve is closed, cut-off closing in cooling tube 520, the gas after cooler 510 is cooled down is trapped, it is impossible to be delivered to appendix 110 It is interior, when hot fluid plastic from extruded tube 220 when extruding, in order that obtaining hot fluid plastic mobility more preferably, close and cut Only valve, it is to avoid cooling gas blow out, and then enable hot fluid plastic high efficiency flow.So, stop valve is rationally controlled Open and close, enable to the blowing of hot fluid plastic better.

In order to avoid the cooling gas of cooling tube 520 blow back into cooler 510 due to the gas flow of appendix 110 It is interior, in one embodiment, as shown in figure 3, internal diameter of the internal diameter of the cooling tube 520 more than the appendix 110, specifically Ground, because the internal diameter of cooling tube 520 is larger, and the internal diameter of appendix 110 is smaller, so, be easy to gas in cooling tube 520 to Circulation in appendix 110, and appendix 110 is because in the presence of air pump 150, its internal gas flow rate is very fast, easy edge Appendix 110 to circulate, without being drained in cooling tube 520, therefore, it is possible to effectively cause the gas conveying of cooling tube 520 To appendix 110, in order to further improve transfer efficiency of the cooling tube 520 to the gas of appendix 110, for example, described cold But wind wheel is provided with pipe 520, under the drive of wind wheel, the gas in cooling tube 520 can efficiently be delivered to appendix 110, and be prevented effectively from the gas of appendix 110 and be circulated to cooling tube 520.

Although it is noted that appendix 110 blowout gas pressure intensity it is larger, can well by hot fluid plastic Inflation is simultaneously covered on the inner surface of the first mould 310 and the second mould 320, but because the intake method of appendix 110 is more single One so that gas pressure intensity skewness, the variable thickness in turn resulting in hot fluid plastic is caused, and cannot form thicker thickness Degree, in order that obtaining hot fluid plastic is subject to uniform pressure, and then causes that thickness is uniform, and enable hot fluid plastic Thickness is effectively improved, in one embodiment, as shown in figure 4, blow moulding machine 10 also includes fexible film 610, the fexible film 610 sealing shrouds are located at the one end of the appendix 110 away from the heater, and the appendix 110 is partially protrude through in described Cylinder 221, and the fexible film 610 exposes to the inner cylinder 221, i.e., the fexible film 610 is integrally located at outside inner cylinder 221, So, fexible film 610 can not be limited and expanded by inner cylinder 221, for example, the fexible film 610 is balloon-like, for example, The fexible film 610 is chondritic, for example, the fexible film 610 is the chondritic with valve, for example, the gas transmission Pipe 110 has the mouth of pipe 115 away from one end of the heater, and the valve of the fexible film 610 is coated on the pipe of the appendix 110 Mouth 115.

So, when hot fluid plastic is extruded along extruded tube 220, the hot fluid plastic is cylindrical, and is sheathed on The outside of fexible film 610, the subsequent matched moulds of first mould, 310 and second mould 320, hot fluid plastic end is clamped and sealed Close, when subsequent appendix 110 is blown, gas will be blown into fexible film 610, and fexible film 610 expands under gas pressure, and Hot fluid plastic is connected to, hot fluid plastic expands and be connected to the first mould 310 and second with fexible film 610 The inner surface of mould 320, the increase of the gas that the pressure of gas blows out with appendix 110 in fexible film 610 and increase, And then enable that fexible film 610 is fully connected to hot fluid plastic, and hot fluid plastic is extruded, due to fexible film 610 can coat gas, and then enable that gas pressure intensity is distributed evenly along fexible film 610, and then cause to heat Property fluid plastic squeezing effect more preferably, the mould 310 of fexible film 610 and first and the collective effect of the second mould 320 are flexible The extreme expansion due to gas pressure intensity of film 610, the mould built-in equivalent to, fexible film 610 presses to the hot fluid Plastics so that the hot fluid plastic is fixed to type, so so that the hot fluid plastic can with thicker thickness into Type, and there is stronger hardness after shaping.

In the present embodiment, when being extruded during hot fluid plastic is through tapping channel 223, the first mould 310 and the second mould 320 matched moulds, hot fluid plastic is clamped, and appendix 110 is blown the inflation of fexible film 610, and is connected to hot fluid modeling The inner side of material so that the mould 310 of fexible film 610 and first and the second mould 320 are fixed hot fluid plastic and be allowed to jointly Shaping, and then enables that thicker plastics are molded, effective hardness that improve plastic product.

For example, the appendix 110 has circular cross-section, for example, first body 111 has circular cross-section, for example, 3rd body 113 has circular cross-section, and in order that body of bringing about the desired sensation can be concentrated and blow to fexible film 610, and then enhancing is blown To the pressure of fexible film 610, in one embodiment, the internal diameter of the appendix 110 is by near one end of the heater It is gradually reduced to the one end away from the heater, for example, the internal diameter of the 3rd body 113 is by near the one of the heater Hold and be gradually reduced to the one end away from the heater, for example, the internal diameter of first body 111 is by near second body 112 one end is gradually reduced to the one end away from second body 112, i.e., the internal diameter of the described totality of appendix 110 is by leaning on One end of nearly air pump 150 is gradually reduced to the one end near fexible film 610, be conducive to the gas of air pump 150 concentrate blow to it is soft Property film 610, and then cause appendix 110 blowout gas pressure it is bigger, and then cause fexible film 610 to hot fluid The pressure of plastics is bigger.

It is noted that, it is necessary to plastic products are taken out after the blowing of plastic products is completed, and will be covered on Fexible film 610 in the plastic products takes out, in one embodiment, described defeated for the ease of the taking-up of fexible film 610 Tracheae 110 is arranged with lasso 700 near one end of the fexible film 610, for example, the lasso be detachably arranged at it is described defeated The outside of tracheae；For example, the fexible film is arranged between the appendix and the lasso.For example, the lasso 700 can Dismounting is arranged at the outside of the appendix 110, and the fexible film 610 is arranged at the appendix 110 with the lasso Between 700, the lasso 700 is used to fix fexible film 610, for example, the lasso 700 is clamped, and then by fexible film 610 Valve is fixed on the mouth of pipe 115 of appendix 110, and after the lasso 700 is dismantled, fexible film 610 can be from the appendix 110 On remove, and then enable that fexible film 610 takes out from plastic products.

Dismantle and install for the ease of lasso 700, in one embodiment, as shown in figure 5, the lasso 700 has one Opening 701, the lasso 700 is provided with along the radial outside projection of the lasso 700 respectively near the two ends of the opening 701 First connecting portion 710 and second connecting portion 720, the first connecting portion 710 and the second connecting portion 720 pass through screw 750 It is spirally connected, in the present embodiment, the lasso 700 is not the ring-type of closing, but with the ring-type of opening 701, positioned at opening 701 Install and be equipped with first connecting portion 710 and second connecting portion 720, (figure is not for example, being provided with the first screw in first connecting portion 710 Show), the second screw (not shown) is provided with second connecting portion 720, be spirally connected a screw 750 in the first screw and the second screw, The screw 750 is spirally connected a nut 760, so, by screw 750 and nut 760 by first connecting portion 710 and second connecting portion 720 are tightly fastened, and then enable that lasso 700 is closely sheathed on the position of the mouth of pipe 115 of appendix 110, and then by flexible thin Film 610 is fixed on the mouth of pipe 115 of appendix 110.

In order that obtain the sealing effectiveness of the fexible film 610 more preferably, for example, the material of the lasso 700 is metal material, example Such as, the material of the lasso 700 is stainless steel, and so, the lasso 700 has compared with strong hardness, being capable of fixing flexible film well 610, in order to avoid lasso 700 damages fexible film 610, the gas leakage of fexible film 610 is caused, for example, as shown in fig. 6, the set The inner side of circle 700 is provided with pressure pad layer 702, for example, pressure pad layer 702 is provided with the circumference of the lasso 700, for example, the pressure pad Layer 702 is rubber layer, and specifically, the pressure pad 702 material of layer are more soft, can be prevented effectively from cause fexible film 610 and damage It is bad, additionally, the pressure pad layer 702 that the rubber is made has excellent toughness and elasticity, deformation can be produced under the extruding of lasso 700, And then fully overlay on fexible film 610, with good air-tightness, and then cause the sealing effectiveness of the fexible film 610 More preferably.

In order that the plastics that must be extruded are more uniformly distributed, for example, the inwall of outer barrel 222 is provided with the first helicitic texture, and for example, The outer surface of inner cylinder 221 is provided with the second helicitic texture, for example, first helicitic texture is set to helical form, it is and for example, described Second helicitic texture is set to helical form, and for example, the hand of spiral phase of first helicitic texture and second helicitic texture Together, so so that when tapping channel 223 of the hot fluid plastic between inner cylinder 221 and outer barrel 222 circulates, receive the first spiral shell The extruding of line structure and the second helicitic texture so that hot fluid plastic is stirred well, and then cause the hot of extrusion Fluid plastic is more uniformly distributed.

In order to be that fexible film 610 provides inlet channel, it is to avoid due to the first mould 310 and the matched moulds of the second mould 320 So that the air inlet of fexible film 610 is blockaded, in one embodiment, the first mould 310 offers the first air inlet duct, described Two molds 320 offer the second air inlet duct, for example, first air inlet duct has semi-circular cross-section, for example, the second air inlet duct has There is semi-circular cross-section, for example, first air inlet duct and the second air inlet duct form fit, so, the first air inlet duct and Two air inlet ducts can synthesize a circular trough in the first mould 310 and the second 320 matched moulds of mould, and the circular trough is used to wear Fexible film 610, so that the gas of appendix 110 is blown into fexible film 610, so, when the first mould 310 and the second mould During 320 matched moulds, the part that the fexible film 610 is located at circular trough can be quickly through gas so that appendix 110 can be efficient Ground enables the rapid expanding of fexible film 610 toward air blowing inside fexible film 610, and abundant to hot fluid plastic Apply pressure so that the molding effect of hot fluid plastic is more preferably.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope of this specification record is all considered to be.

Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously Can not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims

1. a kind of blow moulding machine, it is characterised in that including：Inflatable body, extrusion mechanism, the first mould, the first driver, the second mould Tool, the second driver and cooling body；

The extrusion mechanism includes heater, barrel and extruded tube, and the heater is connected with one end of the barrel, described to squeeze Going out cylinder includes inner cylinder and outer barrel, and the inner cylinder is arranged in the outer barrel, and the inner cylinder and the outer barrel interval setting, described Tapping channel is formed between inner cylinder and the outer barrel, the one end of the tapping channel with the barrel away from the heater connects Logical, the appendix is at least partially arranged in the inner cylinder；

First mould is connected with first driver drives；

Second mould is connected with second driver drives；

First mould and second mould are oppositely arranged, and first mould is set towards the second mould direction There is the first bearing surface, second mould is towards being provided with the second bearing surface, described first on the direction of first mould Bearing surface and second bearing surface activity are abutted；

The cooling body includes cooler and cooling tube, and the cooler is connected with the cooling tube, the cooling tube and institute State appendix connection.

2. blow moulding machine according to claim 1, it is characterised in that first driver is the first cylinder.

3. blow moulding machine according to claim 1, it is characterised in that second driver is the second cylinder.

4. blow moulding machine according to claim 1, it is characterised in that the cooling tube is provided with stop valve.

5. blow moulding machine according to claim 1, it is characterised in that the internal diameter of the cooling tube is interior more than the appendix Footpath.