CN100558539C - Wind power traction tri-dimensional blow moulding apparatus and its implementation - Google Patents
Wind power traction tri-dimensional blow moulding apparatus and its implementation Download PDFInfo
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- CN100558539C CN100558539C CNB2006101238597A CN200610123859A CN100558539C CN 100558539 C CN100558539 C CN 100558539C CN B2006101238597 A CNB2006101238597 A CN B2006101238597A CN 200610123859 A CN200610123859 A CN 200610123859A CN 100558539 C CN100558539 C CN 100558539C
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- parison
- vane
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- blow moulding
- abaculus
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Abstract
The invention provides a kind of wind power traction tri-dimensional blow moulding apparatus, comprise parison handpiece, parison internal pressure control system, tri-dimensional blow moulding mould and upper and lower abaculus, described parison handpiece is connected with parison internal pressure control system, and described tri-dimensional blow moulding mould is connected with abaculus up and down; Comprise that also vane assembly and pneumatic power produce and control device, the vane assembly is connected with last abaculus, and pneumatic power generation is connected with the vane assembly with control device.A kind of wind power traction tri-dimensional blow moulding method of utilizing the said equipment to realize comprises the steps: that the air-flow traction parison that utilizes vane to produce moves along forniciform die cavity.Utilize the present invention can realize the production of three-dimensional bending blow-molded article on common blow moulding machine, can reduce overlap significantly, improve the utilization rate of material, apparent mass is good, and mechanical performance of products is good; In addition, the present invention have compact conformation, energy consumption low, be easy to realize, advantage that production cost is low, be adapted at promoting the use of on a large scale in the industrial production.
Description
Technical field
The present invention relates to a kind of polymer blow molding technology, particularly a kind of wind power traction tri-dimensional blow moulding apparatus and its implementation.
Background technology
There are problems such as the many and folder base seam of overlap when adopting common blow moiding method moulding three-dimensional bending pipe fitting.In order to reduce the overlap in the forming process, improve stock utilization, reduce cost, need improve common blow molding technology.Tri-dimensional blow moulding is a kind of novel blow moiding method, and its main thought is that parison is placed within the bending die cavity, feeds compressed air then with preform blowup and refrigerated product.Yet because the existence of multiple technologies difficult point, this technology is not also extensively promoted.Wherein how parison being placed the die cavity of mould is the main difficult point place of this technology.
The patent No. be US 4645447 U.S. Patent Publication a kind of vacuum drawing-type tri-dimensional blow moulding apparatus.As shown in Figure 1, at the upper and lower side of mould abaculus is set, mold can move separately with abaculus up and down.At first, the mould closure by the head extruded parisons, is opened vavuum pump simultaneously and is formed negative pressure pulling parison and move along the die cavity of bending, when parison arrives the precalculated position, stops extruded parisons, and the abaculus closure feeds compressed air inflation parison then up and down.The shortcoming of this method is because the existence of parison below vacuum environment causes parison depressed deformation to occur easily, thereby makes the difficult die cavity by mould of parison.In addition, vacuum generation and control device thereof are relatively more expensive, make that the manufacturing cost of equipment is very high.
The patent No. be US 4738612 U.S. Patent Publication a kind of equipment that adopts the mould motion mode to come blowing three-dimensional bending pipe fitting.As shown in Figure 2, female die be installed in one with the angled mould bases of horizontal plane on.At first, extruded parisons is sealed an end of parison simultaneously, and parison made certain pre-blowing to prevent the parison depressed deformation, when parison is extruded, the driving lower mold half does three-dimensional motion or bidimensional moves and rotates, and makes the parison of extruding just fall among the mold cavity, when parison arrives preposition, upper mold half is closed, and feeds compressed air inflation parison.Though this mode can the moulding bending pipe fitting, also has significant disadvantages: because at first cool off on the surface that parison contacts with mould, this can cause the inhomogeneous and circumferential performance of Thickness Distribution on the goods circumferencial direction also to exist certain difference.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, compact, low cost of manufacture, the wind power traction tri-dimensional blow moulding apparatus that action effect is desirable.
Another object of the present invention is to provide the wind power traction tri-dimensional blow moulding method that a kind of technology that is realized by the said equipment is simple, easy to operate, be easy to use.
Purpose of the present invention is achieved through the following technical solutions: a kind of wind power traction tri-dimensional blow moulding apparatus, comprise parison handpiece, parison internal pressure control system, tri-dimensional blow moulding mould and upper and lower abaculus, described parison handpiece is connected with parison internal pressure control system, and described tri-dimensional blow moulding mould is connected with abaculus up and down; It is characterized in that: this equipment comprises that also vane assembly and pneumatic power produce and control device, and the vane assembly is connected with last abaculus, and pneumatic power generation is connected with the vane assembly with control device.
Described vane assembly be installed in parison handpiece under and be fixed on the abaculus its center line and parison handpiece central lines.
Described vane assembly comprises cover, baffle plate and radiai adjustment screw in vane overcoat, the vane, in the described vane cover be arranged at the vane overcoat inboard and with the coaxial setting of vane overcoat, baffle plate is set between the cover in vane overcoat and vane forms gas equalization chamber, described radiai adjustment screw is connected with the vane overcoat, can regulate the circumferential air-flow distribution of vane by regulating the radiai adjustment screw.
Described baffle plate can have 3～5 layers, forms the serpentine runner.
Described radiai adjustment screw axis is symmetrical arranged, and its quantity can be 4.
The air inlet of described vane is symmetrical arranged, and its quantity can be 4～12, and this structure can make the gas that flows out vane even as much as possible.
The cover surface is in an acute angle with center line in the described vane, and parison enters in the vane from the big end of diameter and overlaps.
The angular range of described acute angle can be 5 °～30 °.
Described wind-force produces with control device and comprises air pump, gas ratio valve, pressure sensor and pressure controller, described air pump is connected with the gas ratio valve, the gas ratio valve is connected with the vane assembly, pressure sensor is installed near in the die cavity of vane gas outlet, pressure sensor feeds back to pressure controller with pressure signal, pressure controller control gas ratio valve is realized the control to the gas pressure in the die cavity, makes parison can pass through forniciform die cavity smoothly.
A kind of wind power traction tri-dimensional blow moulding method of utilizing the said equipment to realize mainly comprises the steps: to utilize air-flow traction parison that vane produces to move along the die cavity of mould.
Described die cavity can be forniciform complicated mold cavity shape.
This method more specifically can comprise the steps: to extrude diameter than die cavity diameter circlet shape parison by parison handpiece, injecting low-pressure gas toward the inside of parison simultaneously makes parison keep toroidal, booster air pump is injected into compressed air among the mold cavity by vane in extruded parisons, and the gas pressure in the control die cavity, the parison of extruding is moved along the bending mold cavity under the tractive force effect of the air-flow that vane produces, because forming stable air cushion between mold cavity and parison, the air-flow that vane produces make parison in moving process, can not come in contact and hardening by cooling with mold cavity, when parison arrives preposition, head stops extruded parisons, be installed in the abaculus closure at parison entrance and exit place, two ports of parison are sealed, then blowing needle is inserted parison and injecting compressed air inflation parison, make parison be adjacent to mold cavity and refrigerated product, finally take out the tri-dimensional blow moulding goods.
The present invention has following advantage and effect with respect to prior art: (1) is simple in structure, compact; Present device only utilizes vane assembly and pneumatic power to produce with control device and can realize, because the vane modular construction is fairly simple, and pneumatic power produces and control device also is easy to realize, so with respect to existing vacuum attraction mode and mould motion mode, the structure of present device is very simple, manufacturing cost is lower, so easy to utilize.(2) blow-molded article performance height; In the present invention, too early contacting and cooling do not take place with mould in the parison surface, makes the Thickness Distribution that makes progress in goods week more even than the goods of the method production that moves moulds, and the parison depressed deformation phenomenon that can avoid the vacuum attraction method to cause; Simultaneously,, make the goods that use present device to produce to bear higher pressure, be specially adapted to production air inlet and exhaust pipe fitting owing to do not press from both sides the existence of base seam on the goods.(3) energy-saving and cost-reducing; The air-flow that vane among the present invention produces can make the parison of extruding smoothly by the die cavity of blow mold, and specific energy consumption is lower mutually to follow common blowing and other tri-dimensional blow moulding apparatus; The present invention adopts the minor diameter parison, therefore, adopts small screw diameter extruder and little parison handpiece can realize the production of bending pipe fitting, compares with common blowing, and energy consumption is significantly reduced; Simultaneously, utilize the present invention can reduce overlap significantly, improve the utilization rate of material, by experiment proof: overlap of the present invention can reduce 20～90% than common blowing.(4) widely applicable; The present invention can realize tri-dimensional blow moulding on common extrusion blow molding machine, need not to acquire separately vacuum generation with high costs and control device thereof or mould motion driving arrangement, can transform existing a large amount of common extrusion blow molding machines easily and realize the tri-dimensional blow moulding function, applicability is better.
Description of drawings
Fig. 1 is the equipment schematic diagram among the existing patent US 4645447.
Fig. 2 is the equipment schematic diagram among the existing patent US 4738612.
Fig. 3 is the structural representation of wind power traction tri-dimensional blow moulding apparatus of the present invention.
Fig. 4 is the parison formation of equipment shown in Figure 3 and the structural representation of Control Component.
Fig. 5 is the vane assembly and the pneumatic force control device schematic diagram of equipment shown in Figure 3.
Fig. 6 is the structural representation of blow mold shown in Figure 3 and abaculus assembly.
Fig. 7 is the schematic diagram of die opening state and tri-dimensional blow moulding goods.
Above-mentioned each number in the figure is described as follows: A-parison formation and Control Component; The pneumatic power assembly of B-; C-blow mold assembly; The 1-hydraulic cylinder; 2-left side half module tool; The 3-pressure sensor; The 4-blowing needle; 5-vane assembly; 5-1-vane overcoat; 5-2-radiai adjustment screw; Cover in the 5-3-vane; The 5-4-baffle plate; The 6-parison; 7-mouth mould; The 8-plug; The 9-air pump; The 10-valve; 11-gas ratio valve; The 12-pressure sensor; The 13-storage cavity; 14-storing type head; 15-gas ratio valve; The 16-valve; The 17-air pump; The last abaculus of 18-; The 19-cylinder; The right half module tool of 20-; The 21-hydraulic cylinder; The 22-die cavity; The 23-cylinder; Abaculus under the 24-; The 25-photoelectric sensor
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Fig. 3～Fig. 7 shows concrete structure of the present invention, and as seen from Figure 3, this wind power traction tri-dimensional blow moulding apparatus comprises parison formation and Control Component A, pneumatic power assembly B and blow mold assembly C; Described parison formation and Control Component A are connected with pneumatic power assembly B, and pneumatic power assembly B is connected with blow mold assembly C.
Described parison formation and Control Component A (see figure 4) are connected with extrusion blow molding machine machine barrel (not shown), plug 8 is connected with the hydraulic control device (not shown), can change the head die gap by hydraulic control device, realization is to the control of system of parison wall thickness, air pump 9 is connected with valve 10, valve 10 is connected with gas ratio valve 11, gas ratio valve 11 is connected with pressure sensor 12, pressure sensor 12 is linked on the ventilating opening of plug 8 by tube connector, pressure sensor 12 feeds back to the control of pressure controller (not shown) realization to the pressure in the parison with pressure signal, thereby makes the parison of extruding 6 keep toroidals.
Described pneumatic power assembly comprises that vane 5 and pneumatic power produce and control device as shown in Figure 5.Vane comprises cover 5-3, baffle plate 5-4 and radiai adjustment screw 5-2 in vane overcoat 5-1, the vane, in the described vane cover 5-3 be arranged at vane overcoat 5-1 inboard and with the coaxial setting of vane overcoat 5-1, in vane overcoat 5-1 and vane, between the cover 5-3 baffle plate 5-4 is set, forms gas equalization chamber; Described radiai adjustment screw 5-2 is connected with vane overcoat 5-1; By regulating the circular gap that described radiai adjustment screw 5-2 can regulate vane, the circumferential air-flow of vane is evenly distributed; Pneumatic power produces with control device and comprises gas ratio valve 15, valve 16 and air pump 17, air pump 17 is connected with valve 16, valve 16 is connected with gas ratio valve 15, gas ratio valve 15 is connected with vane 5, pressure sensor 3 feeds back to the control of pressure controller (not shown among Fig. 5) realization to the pressure in the mold cavity with pressure signal, so that control parison 6 moving in mold cavity 22.
Described blow mold assembly as shown in Figure 6, comprise abaculus assembly, blow mold and following abaculus assembly, last abaculus assembly comprises abaculus 18, cylinder 19, blowing needle 4 and pressure sensor 3, last abaculus 18 is connected with mold, cylinder 19 is connected with last abaculus 18, last abaculus 18 can slide along the track under the effect of cylinder 19, goes up abaculus 18 closures, end closure in the realization when parison arrives the precalculated position; Mould comprises that left half module tool 2, hydraulic cylinder 1, right half module tool 20 and 21, two half module tools of hydraulic cylinder realize die sinking and matched moulds under the effect of hydraulic cylinder; Following abaculus assembly comprises abaculus 24, cylinder 23 and photoelectric sensor 25 down, and following abaculus 24 is connected with mold, and cylinder 23 is connected with following abaculus 24, and photoelectric sensor 25 is connected with abaculus 24.When parison under the effect of the tractive force that vane produces when mold cavity moves to the position at photoelectric sensor 25 places, stop extruded parisons, photoelectric sensor 25 sends signal and makes down abaculus 24 closures, through after certain time-delay, last abaculus 18 closures, blowing needle 4 inserts parison and injecting compressed air inflation parison then, takes out blow-molded article through behind the cooling curing.
The entire work process of this wind power traction tri-dimensional blow moulding apparatus is: polymer melt is injected into the storage cavity 13 of storing type head 14 from extrusion blow molding machine, left side half module tool 2 and right half module tool 20 close, and go up abaculus 18 and following abaculus 24 simultaneously and open die cavity that is communicated with up and down of formation; Booster air pump 17, arrive vane 5 behind gas process valve 16 and the gas proportioning valve, under the effect of baffle plate 5-4, obtain stable air-flow, inject die cavity behind the annular channel of gas after stable by cover 5-3 formation in vane overcoat 5-1 and the vane, extruded parisons 6 then, booster air pump 9 in extruded parisons, gas injects in the die cavity through valve 10 backs, control the control that gas ratio valve 11 is realized the parison internal pressure by gas pressure and the predetermined pressure of basis that pressure sensor 12 obtains in the parison, make parison can keep toroidal; Parison 6 die cavity 22 along bending under the effect of the tractive force that vane 5 produces moves, when the end of parison 6 arrives the position at photoelectric sensor 25 places, photoelectric sensor 25 sends signal and make that abaculus 24 closes down under the driving of cylinder 23, seal the lower port of parison, through go up the upper port that abaculus 18 closes and seals parison after certain time delay under the driving of cylinder, inserting blowing needle 4 and injecting compressed air then makes preform blowup and obtain cooling in mould, finally open left half module tool 2 and right half module tool 20, obtain goods 26 (as shown in Figure 7).
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1, a kind of wind power traction tri-dimensional blow moulding apparatus, comprise parison handpiece, parison internal pressure control system, tri-dimensional blow moulding mould and upper and lower abaculus, described parison handpiece is connected with parison internal pressure control system, and described tri-dimensional blow moulding mould is connected with abaculus up and down; It is characterized in that: comprise that vane assembly and pneumatic power produce and control device, the vane assembly is connected with last abaculus, and pneumatic power generation is connected with the vane assembly with control device;
Described vane assembly comprises cover, baffle plate and radiai adjustment screw in vane overcoat, the vane, in the described vane cover be arranged at the vane overcoat inboard and with the coaxial setting of vane overcoat, baffle plate is set between the cover in vane overcoat and vane forms gas equalization chamber, described radiai adjustment screw is connected with the vane overcoat;
Described pneumatic power produces with control device and comprises air pump, gas ratio valve, pressure sensor and pressure controller, described air pump is connected with the gas ratio valve, the gas ratio valve is connected with the vane assembly, and pressure sensor is installed near in the die cavity of vane gas outlet.
2, wind power traction tri-dimensional blow moulding apparatus according to claim 1 is characterized in that: described vane assembly be installed in parison handpiece under and be fixed on the abaculus its center line and parison handpiece central lines.
3, wind power traction tri-dimensional blow moulding apparatus according to claim 1 is characterized in that: described baffle plate has 3～5 layers, forms S shape runner.
4, wind power traction tri-dimensional blow moulding apparatus according to claim 1 is characterized in that: the cover surface is in an acute angle with center line in the described vane.
5, wind power traction tri-dimensional blow moulding apparatus according to claim 4 is characterized in that: the angular range of described acute angle can be 5 °～30 °.
6, a kind of wind power traction tri-dimensional blow moulding method of utilizing each equipment of claim 1～5 to realize is characterized in that comprising the steps: utilizing air-flow traction parison that vane produces to move along the die cavity of mould.
7, wind power traction tri-dimensional blow moulding method according to claim 6, by vane gas is injected among the mold cavity when it is characterized in that comprising the steps: by the parison handpiece extruded parisons, and the gas pressure in the control die cavity, parison die cavity along mould under the tractive force effect that vane produces of extruding is moved, when parison arrives preposition, be installed in the abaculus closure at parison entrance and exit place, two ports of parison are sealed, blowing needle is inserted parison then and injecting compressed air inflation parison makes parison be adjacent to mold cavity and refrigerated product, finally take out the tri-dimensional blow moulding goods.
8, wind power traction tri-dimensional blow moulding method according to claim 6 is characterized in that: extrude diameter than die cavity diameter circlet shape parison by parison handpiece, make parison keep toroidal at the inside of parison injecting gas simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101238597A CN100558539C (en) | 2006-11-29 | 2006-11-29 | Wind power traction tri-dimensional blow moulding apparatus and its implementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101238597A CN100558539C (en) | 2006-11-29 | 2006-11-29 | Wind power traction tri-dimensional blow moulding apparatus and its implementation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1970274A CN1970274A (en) | 2007-05-30 |
| CN100558539C true CN100558539C (en) | 2009-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101238597A Expired - Fee Related CN100558539C (en) | 2006-11-29 | 2006-11-29 | Wind power traction tri-dimensional blow moulding apparatus and its implementation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103831970A (en) * | 2012-11-21 | 2014-06-04 | 陈下放 | Air inner cooling system |
| CN106239869A (en) * | 2016-09-14 | 2016-12-21 | 江铃汽车股份有限公司 | A kind of blow molding method and system |
| CN112571768A (en) * | 2020-12-14 | 2021-03-30 | 武汉沃美康科技有限公司 | Blow mold capable of achieving uniform processing |
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Granted publication date: 20091111 Termination date: 20201129 |
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