CN109968593A - A kind of screw pump stator rubber bushing molding machine and method - Google Patents

A kind of screw pump stator rubber bushing molding machine and method Download PDF

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Publication number
CN109968593A
CN109968593A CN201910114255.3A CN201910114255A CN109968593A CN 109968593 A CN109968593 A CN 109968593A CN 201910114255 A CN201910114255 A CN 201910114255A CN 109968593 A CN109968593 A CN 109968593A
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CN
China
Prior art keywords
screw pump
pump stator
face
arc
shaped end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910114255.3A
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Chinese (zh)
Inventor
宗殿瑞
杨化林
焦冬梅
边慧光
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Qingdao University of Science and Technology
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Qingdao University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao University of Science and Technology filed Critical Qingdao University of Science and Technology
Priority to CN201910114255.3A priority Critical patent/CN109968593A/en
Publication of CN109968593A publication Critical patent/CN109968593A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03Injection moulding apparatus
    • B29C45/13Injection moulding apparatus using two or more injection units co-operating with a single mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/77Measuring, controlling or regulating of velocity or pressure of moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/78Measuring, controlling or regulating of temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76498Pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76531Temperature

Abstract

The present invention provides a kind of screw pump stator rubber bushing molding machine and method, including gear pump, the flange with arc-shaped end face being fixedly connected with gear pump one end, the extruder being fixedly connected with the gear pump other end, the temperature control system and control panel of connection molding machine below extruder, it further include the screw pump stator pipe that Spherical sealed connection is carried out with the arc-shaped end face of the flange with arc-shaped end face, molding runners are equipped in screw pump stator pipe, the junction part of the arc-shaped end face of screw pump stator pipe and the flange with arc-shaped end face is equipped with Y type runner, the molding runners being equipped in Y type runner double end end face runner mouth and screw pump stator pipe are connected;The present invention solves the technical problems such as rubber injection biggish for viscosity is difficult, massive article injection flow passage is too long, equipment investment is big in the prior art, the configuration of the present invention is simple is compact, reliable operation, automatic degree are high, high production efficiency realizes plasticizing forming metering serialization.

Description

A kind of screw pump stator rubber bushing molding machine and method
Technical field
The present invention is related to a kind of novel screw pump stator rubber bushing molding machine and side in rubber processing techniques field Method.
Background technique
Screw pump is widely used in following chemical industry from the beginning of the nineties with its excellent conveying characteristic, exploration is dug up mine, The industries such as shipbuilding industry, ceramic industry, energy industry, sewage treatment, paper-making industry, medicine, food, for conveying chemical grout, boring Visit a variety of medium conveyings of mud, various fuel oils, fresh water, sump oil, clay.Screw pump plays an important role in modern industry, It is one of the technology of current China's main development, screw pump critical component is stator rubber bushing, and forming technique is to influence to produce The key of moral character energy, represents screw pump technology advanced level.
The traditional production method of screw pump stator product is: 1) injection method, but the disadvantage is that: 1. energy consumption is very big (> 350kw), Injection volume is limited;2. big product multiple injection, can be only achieved aequum requirement;3. life of product is short, because fractional injection easily causes Sizing material bonding is poor.2) drape process: but the disadvantage is that: 1. plasticizing is uneven, influences the quality of product.2. injection pressure is excessively high, negatively It influences big.3. equipment investment is big, host needs 20,000,000 or so.
Chinese patent CN200410024397.4 patent discloses an a kind of step of common screw pump stator rubber bushing Method injection moulding vulcanization device and method are established on screw rotation injection moulding machine generation high pressure, injection moulding, still Due to thin (6~8mm) the unbearable high pressure of the volute wall of the wall thickness cored screw pump stator such as spiral.In addition, waiting wall thickness rubber The thickness of bushing very thin (be less than 10mm) and grow and (is greater than 7m), it is even more impossible to form by high-pressure injection method, it is difficult to the walls such as completion The injection of thick rubber bushing.
A kind of hollow spiral shells of wall thickness such as spiral are disclosed by the CN201210076368.7 patent that Qingdao University of Science and Technology applies Bar pump stator rubber bushing forming method, main structure include drawing device, the screw rod with the progress internal screw thread connection of drawing device Pump stator, the extruder nozzle directly pressed with drawing device, nozzle left-hand thread are connected in cold feed extruder, wherein drawing Device is mounted in heating device, and the method increase forming quality of products, is reduced one-time investment cost and production cost, is mentioned High production yield improves work efficiency.But the device extrusion pressure is less than normal, has the limitation of injection volume, and with tradition It is the same to inject two step method, first gathers quantitative sizing material in barrel, product is bigger, and volume is bigger, rubber biggish for viscosity, note Penetrate more difficult, especially for massive article, injection flow passage is too long, therefore, invent a kind of simple and compact for structure, reliable operation, Automatic degree is high, and the screw pump stator rubber bushing molding machine and technique of high production efficiency become particularly important.
Summary of the invention
In order to solve the above problem, it is an object of that present invention to provide a kind of screw pump stator rubber bushing molding machine and sides Method, apparatus main body structure includes gear pump and the flange with arc-shaped end face that gear pump one end is fixedly connected, with tooth The extruder that the wheel pump other end is fixedly connected, the temperature control system and control panel of extruder lower section connection molding machine;
Further, the molding machine further includes carrying out with the arc-shaped end face of the flange with arc-shaped end face spherical The screw pump stator pipe of linear sealing connection;Be equipped with molding runners in screw pump stator pipe, screw pump stator pipe with arc-shaped The junction part of the arc-shaped end face of the flange of end face is equipped with Y type runner, and Y type runner double end end face runner mouth and screw pump are fixed The molding runners being equipped in sub- pipe are connected;
Further, the arc-shaped end face of the flange of the arc-shaped end face of the band has circular through hole, Y type runner single head end Surface current road junction engages with the circular through hole of the arc-shaped end face of the flange with arc-shaped end face;
Further, the flange of the arc-shaped end face of the band successively includes arc-shaped end face, with arc-shaped end face one Hollow cylinder, the ring flange with the cylinder one;
Further, the screw pump stator pipe upper and lower is respectively equipped with heat preservation mechanism and lower heat preservation mechanism;The spiral shell Helical form molding runners are formed between bar pump stator pipe and the mandrel of the inside, upper heat preservation mechanism and lower heat preservation mechanism pass through screw spiral shell Bolt is fixedly connected;
Further, the mandrel is spiral twisted shape;The spiral groove of the mandrel and the screw pump stator are tubular At molding runners;
Further, mobile bracket is fixed with below the lower heat preservation mechanism;
As an embodiment of the present invention, the molding machine is from left to right connected with extruder, gear pump, band in turn Flange, the screw pump stator pipe of arc-shaped end face, screw pump stator pipe right are symmetrical structure, are connected in turn with arc-shaped end Flange, gear pump, the extruder in face;
Preferably, Y type runner double end end face runner mouth is respectively placed in the both ends of screw pump stator pipe, and two Y types Runner double end end face runner mouth is interconnected;
Preferably, the extruder is cold feed extruder.
Preferably, the molding machine is from left to right connected with extruder, gear pump, the method with arc-shaped end face in turn Blue, screw pump stator pipe, screw pump stator pipe right are enclosed construction;
Preferably, the flange with arc-shaped end face of the molding machine is in screw pump stator pipe middle position and screw pump Stator tube circumferential end faces Spherical is tightly connected;Screw pump stator pipe both ends are enclosed construction.
Preferably, when screw pump stator pipe both ends are connected with the flange with arc-shaped end face, work as screw pump stator When pipe is 4.6m, extruder shows that pressure is 18Mpa;It shows that pressure and the length of screw pump stator pipe are in a linear relationship;Institute Stating screw pump stator pipe maximum length is 12m.
Technical solution of the present invention is at least had the following advantages and beneficial effects:
One, the double extruder structures of the present invention, production efficiency improve 30% relative to conventional mechanical means, product quality product rate Up to 98% or more, the service life improves 60% or more, reduces by 30% or more energy consumption.Structure is simple, compact, small in size, reliable operation, easily It in realizing automation, improves efficiency, the saving energy, cost of equipment is low etc., the screw pump stator rubber bushing of equipment production causes Close property is good, and no open defect, service life obtains larger raising.
Two, the shortcomings that the present invention overcomes the complicated technology of mould pressing technology and difficult punch dies, and overcome the height of conventional injection The shortcomings that pressure, limited injection volume, long runnerless injection hardly possible, bulkiness, expensive price.
Three, the effect of bound rubber gear pump high pressure is continuously conveyed by screw rod in endless forming technique of the invention, matches It closes special construction nozzle and cold runner design realizes that plasticizing forming measures serialization, compared to the limit for being injection moulded not injection volume System realizes distribution according to need.
Four, the present invention expedites the emergence of environmental protection technology using low pressure homogeneous high pressure, solves huge mechanism, the height of hydraulic injection equipment The shortcomings that energy consumption.
Five, the present invention breaches calibrated shot problem, solves that conventional injection molding is difficult to produce high homogeneous, big product is asked Topic;Overcome traditional quantitative limitation, eliminates independent injection barrel and injection hydraulic power mechanism, reduce the body of equipment Product.
Detailed description of the invention
For the clearer technical solution for illustrating the embodiment of the present invention, below to needing attached drawing to be used to make in embodiment It is simple to introduce, it should be understood that the following drawings illustrates only certain embodiments of the invention, is not construed as to model of the present invention The limitation enclosed without creative efforts, can obtain according to these attached drawings to those skilled in the art Obtain other accompanying drawings.
Fig. 1 is three-dimensional oblique two surveys view of structure of the invention;
Fig. 2 is structure of the invention two-dimensional top-down view;
Fig. 3 is two dimension local overlooking enlarged drawing in gear pump structure junction of the present invention;
Fig. 4 is structure of the invention two dimension main view;
Fig. 5 is two dimension local main view enlarged drawing in gear pump structure junction of the present invention;
Fig. 6 is Y type flow passage structure two dimension top perspective view of the present invention;
Fig. 7 (a) is structure of the invention cross-sectional view;
Fig. 7 (b) is pressure of the present invention and device axial position pressure curve schematic diagram;
It is marked in figure: 1-Y type runner;2- screw pump stator pipe;3- gear pump;Flange of the 4- with arc-shaped end face;5- is squeezed Machine out;The upper heat preservation mechanism of 6-;Heat preservation mechanism under 7-;8- mandrel;9- temperature control system;10- control panel;11- moves bracket;A- is squeezed Machine machine barrel out;B- mold;
Specific embodiment
The present invention will be described in the following with reference to the drawings and specific embodiments.
To keep purpose-technical solution and the advantage of the embodiment of the present invention clearer, below in conjunction with attached drawing, to the present invention Technical solution in embodiment carries out clear, complete description.Obviously, described embodiment is that a part of the invention is implemented Example, instead of all the embodiments.
Therefore, the model of claimed invention is not intended to limit to the detailed description of the embodiment of the present invention below It encloses, but is merely representative of section Example of the invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not having Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside", " back side " is to be based on the orientation or positional relationship shown in the drawings, Either the invention product using when the orientation or positional relationship usually put.This kind of term is merely for convenience of the description present invention It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure It makes and operates, therefore be not considered as limiting the invention.
It should also be noted that, in the description of the present invention unless specifically defined or limited otherwise, term " setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one Connect to body;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, it can also be indirect by intermediary It is connected, can be the connection inside two elements.To those skilled in the art, can understand as the case may be above-mentioned The concrete meaning of term in the present invention.
As shown in Figs 1-4, molding machine used in the embodiment of the present invention (see Fig. 1) main structure include gear pump 3, with The flange 4 with arc-shaped end face that 3 one end of gear pump is fixedly connected is squeezed with what 3 other end of gear pump was fixedly connected Machine 5 out connect the temperature control system 9 and control panel 10 of molding machine below extruder 5;
Further, the molding machine further includes carrying out with the arc-shaped end face of the flange 4 with arc-shaped end face spherical The screw pump stator pipe 2 of linear sealing connection;Equipped with molding runners, screw pump stator pipe 2 and with circular arc in screw pump stator pipe 2 The junction part of the arc-shaped end face of the flange 4 of shape end face is equipped with Y type runner 1,1 double end end face runner mouth of Y type runner and spiral shell The molding runners being equipped in bar pump stator pipe 2 are connected;
As seen in figs. 5-6, further, the arc-shaped end face of the flange 4 of the arc-shaped end face of the band has circular through hole, 1 single head end face runner mouth of Y type runner engages with the circular through hole of the arc-shaped end face of the flange 4 with arc-shaped end face;
Further, the flange 4 of the arc-shaped end face of the band successively includes arc-shaped end face, with arc-shaped end face one Hollow cylinder, the ring flange with the cylinder one;
Further, 2 upper and lower of screw pump stator pipe is respectively equipped with heat preservation mechanism 6 and lower heat preservation mechanism 7;It is described Helical form molding runners are formed between screw pump stator pipe 2 and the mandrel of the inside 8, upper heat preservation mechanism 6 and lower heat preservation mechanism 7 pass through Screws bolts are fixedly connected;
Further, the mandrel 8 is spiral twisted shape;The spiral groove of the mandrel 8 and the screw pump stator pipe 2 Form molding runners;
Further, mobile bracket 11 is fixed with below the lower heat preservation mechanism 7;
As an embodiment of the present invention, the molding machine be from left to right connected in turn extruder 5, gear pump 3, Flange 4, screw pump stator pipe 2 with arc-shaped end face, 2 right of screw pump stator pipe are symmetrical structure, are connected with band circle in turn Flange 4, gear pump 3, the extruder 5 of curved end;
Further, the 1 double end end face runner mouth of Y type runner is respectively placed in the both ends of screw pump stator pipe 2, and two 1 double end end face runner mouth of Y type runner is interconnected;
As an embodiment of the present invention, the extruder 5 is cold feed extruder.
As an embodiment of the present invention, the molding machine be from left to right connected in turn extruder 5, gear pump 3, Flange 4, screw pump stator pipe 2 with arc-shaped end face, 2 right of screw pump stator pipe are enclosed construction;
As an embodiment of the present invention, the flange 4 with arc-shaped end face of the molding machine is in screw pump stator 2 middle position of pipe and 2 circumferential end faces Spherical of screw pump stator pipe are tightly connected;2 both ends of screw pump stator pipe are envelope Close structure.
As shown in fig. 7, embodiment as an embodiment of the present invention, when 2 both ends of screw pump stator pipe connect When being connected to the flange 4 with arc-shaped end face, when screw pump stator pipe 2 is 4.6m, extruder 5 shows that pressure is 18Mpa;It is aobvious Show that pressure and the length of screw pump stator pipe 2 are in a linear relationship;2 maximum length of screw pump stator pipe is 12m.
Step is formed molding machine used in the embodiment of the present invention in following manner:
(1), the installation of screw pump stator pipe 2 and mandrel 8 and Y type runner 1, screw pump stator are carried out to molding machine first Centralized positioning is carried out between pipe 2 and mandrel 8, axial direction is positioned with the axial distance of 2 end face of front and back screw pump stator pipe, Guarantee that end face of the end face of inner flow passage device apart from screw pump stator pipe 2 is equidistant, screw pump stator pipe 2 is hanging, and outside is Upper heat preservation mechanism 6 and lower heat preservation mechanism 7, are mounted equidistant the above positioning screw of 5 rows, and every row has 2 positioning screws along screw axis Direction keeps the temperature the shaped article in screw pump stator pipe 2;Screw pump stator pipe 2 is by 8 length thereof device of mandrel and Y 1 length thereof device of type runner composition, between 1 length thereof device of 8 length thereof device of mandrel and Y type runner using flat key into The positioning of row circumferencial direction is put 90-100 DEG C of temperature of preheating device control into after the installation is completed and is preheated, preheating time 20- 30 minutes, guarantee that 8 temperature of mandrel rises to 90 degree;Cold feed extruder preheating temperature is set, and feeding section temperature is 50 DEG C, is squeezed out Section is 75 DEG C, and head section is 85 DEG C, and screw rod is 80 DEG C;
(2), the mouth mold of cold feed extruder and mold tooling and Y type runner 1 are locked, with arc-shaped end face Flange 4 and mandrel 8 and Y type runner 1 where screw pump stator pipe 2, gear pump 3 be combined into an entirety, cannot have opposite Sliding and dislocation, to guarantee smoothly completing for extruding-injection technique;
(3), start molding machine, start to keep 40Mpa or less to carry out in 95 DEG C of temperature, 20 revs/min of speed, head pressure Low-temp low-pressure low speed squeezes out;Low temperature refers to that the preformed temperature of sizing material will avoid sizing material from causing coke in injection process lower than 100 DEG C It burns, low speed refers to screw speed lower than 30 revs/min, and otherwise the elasticity of sizing material will cause the sharply raising of pressure, and low pressure refers to sizing material Extrusion pressure be maintained at 47Mpa hereinafter, when screw pump stator pipe 2 be 4.6m when, pressure 18Mpa, hypertonia is easy to make At the housing distortion value of screw pump stator tube with uniform wall thickness 2 is excessive and extruder material backflows, backflows and easily cause the material feeding of sizing material Unstable and temperature rise is excessively high;
(4), it is exhausted again, overflow, pressure maintaining and sulfidation, molding or injection to rubber are intended to keep venting quality excellent It is good, to keep bubble-free in product, keep sizing material compactness;The forward of sizing material expects that carrying trace impurity, Ying Jinhang effectively overflow Stream guarantees the homogeneity of overall length quality, and spillway discharge controls at 180-220 grams;Pressure maintaining feeding is carried out after plastic squeeze, so that super Density of the long product in length range tends to be uniform, not will cause defect, further increases the compactness of material, increases wear-resisting Performance, dwell time are not less than 15 minutes, carry out sulfidization molding, curing temperature control subsequently into parameter set by sulfuration process At 145-170 DEG C, time 60-120 minute is vulcanized system.
Embodiments above is merely to illustrate the technical solution being not intended to limit the present invention, and does not depart from any of spirit of that invention Modification or part replacement, are intended to be within the scope of the claims of the invention.

Claims (10)

1. a kind of screw pump stator rubber bushing molding machine, apparatus main body structure include gear pump, with gear pump one end into The flange with arc-shaped end face that row is fixedly connected, the extruder being fixedly connected with the gear pump other end, extruder lower section Connect the temperature control system and control panel of molding machine.
2. a kind of screw pump stator rubber bushing molding machine according to claim 1, it is characterised in that: the molding dress It sets and further includes, the screw pump stator pipe of Spherical sealed connection is carried out with the arc-shaped end face of the flange with arc-shaped end face;
Molding runners, the circular arc of the screw pump stator pipe and the flange with arc-shaped end face are equipped in the screw pump stator pipe The junction part of shape end face is equipped with Y type runner, is equipped in Y type runner double end end face runner mouth and screw pump stator pipe Molding runners are connected.
3. a kind of screw pump stator rubber bushing molding machine according to claim 2, it is characterised in that: the band circular arc The arc-shaped end face of the flange of shape end face has circular through hole, Y type runner single head end face runner mouth and the method with arc-shaped end face The circular through hole engaging of blue arc-shaped end face;
The flange of the arc-shaped end face of band successively includes arc-shaped end face, the hollow cylinder with arc-shaped end face one, with The ring flange of the cylinder one.
4. a kind of screw pump stator rubber bushing molding machine according to claim 2, it is characterised in that: the screw pump Stator tube upper and lower is respectively equipped with heat preservation mechanism and lower heat preservation mechanism;
Helical form molding runners, upper heat preservation mechanism and lower heat preservation mechanism are formed between the screw pump stator pipe and the mandrel of the inside It is fixedly connected by screws bolts;
The mandrel is spiral twisted shape;The spiral groove of the mandrel and the screw pump stator pipe form molding runners.
5. a kind of screw pump stator rubber bushing molding machine according to claim 2, it is characterised in that: the molding dress It sets and is from left to right connected with extruder, gear pump, the flange with arc-shaped end face, screw pump stator pipe, screw pump stator in turn Pipe right is symmetrical structure, is connected with the flange with arc-shaped end face, gear pump, extruder in turn.
6. a kind of screw pump stator rubber bushing molding machine according to claim 2, it is characterised in that: the Y type stream Road double end end face runner mouth is respectively placed in the both ends of screw pump stator pipe, and two Y type runner double end end face runner oral sex mispairing It sets.
7. a kind of screw pump stator rubber bushing molding machine according to claim 2, it is characterised in that: the molding dress It sets and is from left to right connected with extruder, gear pump, the flange with arc-shaped end face, screw pump stator pipe, screw pump stator in turn Pipe right is enclosed construction.
8. a kind of screw pump stator rubber bushing molding machine according to claim 2, it is characterised in that: the molding dress The flange with arc-shaped end face set is close in screw pump stator pipe middle position and screw pump stator pipe circumferential end faces Spherical Envelope connection;Screw pump stator pipe both ends are enclosed construction.
9. a kind of screw pump stator rubber bushing molding machine according to claim 2-8, it is characterised in that: the extrusion Machine is cold feed extruder.
10. a kind of forming method of screw pump stator rubber bushing molding machine, comprising the following steps:
(1), the installation of screw pump stator pipe and mandrel and Y type runner, screw pump stator pipe and core are carried out to molding machine first Centralized positioning is carried out between axis, axial direction is positioned with the axial distance of front and back screw pump stator end surfaces, guarantees interior stream End face of the end face of road device apart from screw pump stator pipe is equidistant, and screw pump stator pipe is hanging, and outside is upper heat preservation mechanism With lower heat preservation mechanism, the above positioning screw of 5 rows is mounted equidistant, every row there are 2 positioning screws along screw axis direction, to screw pump Shaped article in stator tube is kept the temperature;Screw pump stator pipe is filled by mandrel length partial devices and the type flow channel length part Y Composition is set, carries out the positioning of circumferencial direction, peace between mandrel length partial devices and Y type flow channel length partial devices using flat key It puts 90-100 DEG C of temperature of preheating device control after dress into be preheated, preheating time is 20-30 minutes, guarantees mandrel temperature Rise to 90 degree;Cold feed extruder preheating temperature is set, and feeding section temperature is 50 DEG C, and extruding zone is 75 DEG C, and head section is 85 DEG C, screw rod is 80 DEG C;
(2), the mouth mold of cold feed extruder and mold tooling and Y type runner are locked, the method with arc-shaped end face The blue screw pump stator pipe with where mandrel and Y type runner, gear pump are combined into an entirety, cannot there is opposite sliding and mistake Position, to guarantee smoothly completing for extruding-injection technique;
(3), start molding machine, start to keep 40Mpa or less to carry out low temperature in 95 DEG C of temperature, 20 revs/min of speed, head pressure Low pressure low speed squeezes out;Low temperature refers to that the preformed temperature of sizing material will avoid sizing material from causing incipient scorch in injection process lower than 100 DEG C, low Speed refers to screw speed lower than 30 revs/min, and otherwise the elasticity of sizing material will cause the sharply raising of pressure, and low pressure refers to the extrusion of sizing material Pressure is maintained at 47Mpa hereinafter, when screw pump stator pipe is 4.6m, and pressure 18Mpa, hypertonia, which is be easy to cause, waits wall thickness The housing distortion value of screw pump stator pipe is excessive and extruder material backflows, and backflows and easily causes the material feeding of sizing material unstable and warm It rises excessively high;
(4), be exhausted again, overflow, pressure maintaining and sulfidation, molding or injection to rubber are intended to keep venting quality excellent, with Bubble-free in product is kept, sizing material compactness is kept;The forward of sizing material expects to carry trace impurity, and Ying Jinhang effectively protect by overflow The homogeneity of overall length quality is demonstrate,proved, spillway discharge is controlled at 180-220 grams;Pressure maintaining feeding is carried out after plastic squeeze, so that overlength product Density in length range tends to be uniform, not will cause defect, further increases the compactness of material, increases wear-resisting property, Dwell time is not less than 15 minutes, carries out sulfidization molding subsequently into parameter set by sulfuration process, curing temperature control exists 145-170 DEG C, time 60-120 minute is vulcanized.
CN201910114255.3A 2019-02-14 2019-02-14 A kind of screw pump stator rubber bushing molding machine and method Pending CN109968593A (en)

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