CN206855954U - A kind of rubber Dynamic Extrusion shaped device - Google Patents
A kind of rubber Dynamic Extrusion shaped device Download PDFInfo
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- CN206855954U CN206855954U CN201720465346.8U CN201720465346U CN206855954U CN 206855954 U CN206855954 U CN 206855954U CN 201720465346 U CN201720465346 U CN 201720465346U CN 206855954 U CN206855954 U CN 206855954U
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- 238000001125 extrusion Methods 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 19
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 238000010068 moulding (rubber) Methods 0.000 abstract description 3
- 238000010057 rubber processing Methods 0.000 abstract description 2
- 238000004513 sizing Methods 0.000 description 17
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- 230000003068 static effect Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010070 extrusion (rubber) Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920006113 non-polar polymer Polymers 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- -1 poor fluidity Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Abstract
Rubber processing techniques field is the utility model is related to, discloses a kind of rubber Dynamic Extrusion shaped device.The device includes rubber Cold-feed extruder, slip ring, vibrate sleeve, vibrate connecting plate, mouth mold and vibrational system, vibrational system is connected with vibration connecting plate, mouth mold is fixedly mounted on vibration connecting plate, there is cavity among vibration sleeve, hollow channel is opened up in slip ring, one end of slip ring is fixedly connected by connection ring with rubber cold-feed screw extruder, other end side circumference is provided with the first flange, outer circumference is provided with the second flange, barrel forward end is vibrated with the first flange gap to coordinate, elastic ring is installed on second flange, the elastic ring is in contact with vibrating the front end surface of sleeve, first flange along the circumferential direction opens up groove, bushing is embedded in groove.The device can realize the Dynamic Extrusion of rubber, and can reduce extrusion pressure and energy consumption, obtain the rubber-moulding product of high quality.
Description
Technical field
Rubber processing techniques field is the utility model is related to, more particularly to a kind of rubber Dynamic Extrusion shaped device.
Background technology
Rubber extrusion forming method of the prior art is to carry out static extrusion in the case where screw rod provides steady extruding pressure, by
In rubber molecule chain length, compliance is good, and strain stress relaxation is obvious, influence of the elastic recovery to mobility, and viscosity can be caused high,
The distinct disadvantage of poor fluidity, to promote pressure when its flowing needs to improve extrusion, or properly increase feeding section, plasticizing
The temperature of section, extruding zone and head.The raising of extrusion pressure proposes the requirement of higher strength and stiffness, power to equipment,
The raising of temperature proposes higher requirement to heating medium, and too high temperature is likely to cause the prevulcanization of sizing material,
Production is set not continue, traditional static forming method can cause high energy consumption, equipment dynamic requirement height, production cost are high to lack
Fall into.
In plastic extruding forming production process, the technical side that vibration is applied in forming process in the prior art be present
Case, though two kinds of materials of rubber and plastics belong to high polymer material, there is typical difference between the two.(1) molecule knot
Structure, molecular weight distribution are different, and rubber is mostly non-polar polymer, and strand contains double bond more, and molecular weight is bigger than plastics, and molecule
Amount distribution is wider than plastics.Rubber molecular chain chain link is short, and chain link is more, and compliance is better than plastics, and the big elasticity of deflection is big, by elasticity
Extrusion swelling behavior is obvious caused by recovery；(2) kinematic viscosity of rubber is higher than plastics, poor fluidity, and essence is to reach 105
More than molecular weight, intermolecular force increase, molecular chain movement overcomes resistance to increase, flow difficulties, thus with elastomeric material come
Shaping is more than plastic shaping difficulty, and the wall adhesion of rubber is strong, and the response lag of rubber is obvious；(3) when rubber flows
The pressure loss is greater than plastics, and swell behavior, Shear heating, extrudate surface state of rubber extruding all has directly with the pressure loss
Relation, so rubber vibration extruding-out process and plastic vibratory expressing technique are entirely different.Originally the utility model is also tasted
Tried plastics Dynamic Extrusion device being applied in rubber extrusion forming, but it is final because of above-mentioned rubber poor fluidity, wall
The reasons such as face adhesion is strong, rubber-moulding is extremely difficult, therefore utility model people was even once being abandoned in rubber extrusion forming
During superpositing vibration field idea, but our joyful discoveries in the course of the study, the utility model is using specific
Device can realize the Dynamic Extrusion of rubber, and can reduce extrusion pressure and energy consumption, obtain the rubber-moulding production of high quality
Product.
Utility model content
In order to solve the problems, such as rubber poor fluidity of the prior art, difficult forming, the utility model provides one kind
Rubber Dynamic Extrusion shaped device and method.
In order to solve the above-mentioned technical problem, the utility model uses following technical scheme：
A kind of rubber Dynamic Extrusion shaped device, including rubber Cold-feed extruder, slip ring, vibration sleeve, vibration connection
Plate, mouth mold and vibrational system, wherein, vibrational system is connected with vibration connecting plate, and mouth mold is fixedly mounted on vibration connecting plate, is shaken
There is cavity among moving sleeve, hollow channel is opened up in slip ring, one end of slip ring is squeezed by connection ring and rubber cold-feed screw rod
Go out machine to be fixedly connected, other end side circumference is provided with the first flange, and outer circumference is provided with the second flange, before vibrating sleeve
End coordinates with the first flange gap, and elastic ring is installed on the second flange, and the elastic ring is in contact with vibrating the front end surface of sleeve,
First flange along the circumferential direction opens up groove, is embedded in bushing in groove, and reinforce in vibration set front end surface installation pressure ring
Bushing, vibration sleeve rear end are fixedly connected with vibration connecting plate, and slip ring hollow channel, vibration barrel bore, vibration connecting plate are opened
If through hole and mouth mold die cavity be coaxially set and be corresponding in turn to form rubber flow channel.
The structure setting of the utility model slip ring and vibration sleeve can make sizing material in slip ring hollow channel, vibration sleeve
Produced in the passage that chamber, the through hole that opens up of vibration connecting plate and mouth mold die cavity are formed with hydraulic vibrating system same frequency, amplitude,
Equidirectional periodic vibration-extrusion；The flow regime of sizing material changes in vibration processes, sizing material and metal wall
Adhesive attraction changes, free space volumes Repeated Compression diastole, changes sizing material slack time, and elastic recovery is accelerated, row
Gas improves, and mobility improves, and flow resistance declines, and extrusion pressure declines, and reduces energy consumption.
The selection of the superposed positions of oscillator field is also extremely important, and the utility model finds oscillator field by the experiment of creativeness
It is optimal to be superimposed upon extruder head position：If in screw portion superpositing vibration, because screw rod for rubber extruder draw ratio compares plastics
Extruder is big, and sizing material shift motion in machine barrel is grown, and the vibration of superposition can be made to decay substantially, to head section to rubber mobility
Impact effect weakens；Screw portion superpositing vibration, vibrational energy are absorbed by sizing material, are converted into heat energy, can carry to a certain extent
The temperature of high elastomeric compound, too high glue temperature can cause prevulcanization, be unfavorable for the softening of rubber；Screw portion superpositing vibration, changes
The relation of sticking become between sizing material and barrel metal wall, top layer sizing material are accelerated with wall speed, reduce the shear action of sizing material, no
Beneficial to the softening of sizing material.
Rubber Dynamic Extrusion shaped device also includes guiding mechanism, and one end of guiding mechanism is fixed with vibration connecting plate to be connected
Connect, the other end coordinates with being connected czermak space；More can ensure that die cavity, vibration sleeve and slip ring is produced in the presence of vibrational system and
Hydraulic vibrating system same frequency, amplitude, equidirectional vibration.
The pressure ring that rubber Dynamic Extrusion shaped device is set is threadedly coupled with slip ring, in the size and slip ring of the internal diameter of pressure ring
Empty passage it is equal in magnitude.
Preferably, the gap length that the vibration barrel forward end coordinates with the first flange gap is 0.03mm.
The setting of elastic component ensures that vibration set in certain space internal vibration, can meet the needs of vibrational system, as excellent
Choosing, the thickness of the elastic ring is 15-18mm；The bushing is polytetrafluoroethylmaterial material, and the setting of bushing reduce further
The frictional force of relative motion, it both can guarantee that slip ring and the slip vibrated between sleeve were smooth, and can enough ensures sizing material not from slip ring
Overflow at place.
The utility model provides a kind of rubber Dynamic Extrusion shaped device and method, compared with prior art, this practicality
The technical scheme of new offer has advantages below：(1) connection ring of rubber dynamic molding device provided by the utility model
Structure setting, vibration decay almost can be ignored, so that being produced in the relative motion of vibration sleeve and slip ring and vibration
System same frequency rate, the vibration with amplitude, vibration change the shifting sticked relation, change strand of elastomeric compound and metal wall
Dynamic feature, the rheological characteristic of rubber change；(2) rubber dynamic molding device is in extruder head position superpositing vibration field, rubber
In the forming process of glue on the main shear direction of sizing material superpositing vibration field, do not changing the basis of mould structure, material prescription
On, change the mobility of sizing material, reduce energy consumption；(3) under the collective effect of Shear heating and heating machine barrel, rubber temperature rise
Viscous state is changed into from elastomeric state, die cavity is entered by extrusion screw rod, the adhesive attraction of sizing material and the wall of rubber flow channel, made
Sizing material flow regime in vibration processes changes.From above technical scheme, shaped device provided by the utility model
Easy with method technical process, extrusion pressure declines under equal conditions, saves energy consumption；To the strength and stiffness of equipment, power, add
The requirement of thermal medium is relatively low, avoids adjusting the too high prevulcanization that may cause sizing material of temperature for decompression, enables production
Continue, reduce production cost.
Brief description of the drawings
Fig. 1 is rubber dynamic molding installation drawing provided by the utility model；
Fig. 2 is the rubber dynamic (f=30Hz, A=0.3mm) of embodiment 2 and the pressure song of static (f=0Hz, A=0mm)
Line chart；
Fig. 3 is the pressue-graph of rubber Dynamic Extrusion under various amplitude and frequency of embodiment 2.
Embodiment
The utility model discloses a kind of rubber Dynamic Extrusion shaped device and method, those skilled in the art can use for reference
Present disclosure, device parts are suitably modified to realize.In particular, all similar replacements and change are to ability
It is it will be apparent that they are considered as being included among the utility model for field technique personnel.Method of the present utility model
And application is described by preferred embodiment, related personnel can substantially not depart from the utility model content, spirit
Method described herein and application are modified or suitably changed with combining with scope, to realize and using the utility model
Technology.
In order that those skilled in the art can be better understood from the utility model, with reference to embodiment and attached
The utility model is described in further detail for figure.
Embodiment 1
A kind of rubber Dynamic Extrusion shaped device, including rubber Cold-feed extruder 6, slip ring 7, vibration sleeve 3, vibration company
Fishplate bar 2, mouth mold 11, vibrational system 1 and guiding mechanism 4, wherein, vibrational system 1 is connected with vibration connecting plate 2, and mouth mold 11 is solid
Dingan County has cavity among vibration sleeve 3, hollow channel is opened up in slip ring 7, one end of slip ring 7 leads on vibration connecting plate 2
Cross connection ring 5 to be fixedly connected with rubber cold-feed screw extruder 6, other end side circumference is provided with the first flange 12, outside
Circumference is provided with the second flange 13, and the vibration front end of sleeve 3 coordinates with the gap of the first flange 12, and the gap length that gap coordinates is
0.03mm, installs elastic ring 8 on the second flange 13, and the thickness of elastic ring be 15-18mm, the elastic ring 8 with vibrate sleeve 3 before
End end face is in contact, and the first flange 12 along the circumferential direction opens up groove, and the bushing 9 of tetrafluoroethene material is embedded in groove, and
And bushing is reinforced in vibration set front end surface installation pressure ring 10, the vibration rear end of sleeve 3 is fixedly connected with vibration connecting plate 2, slip ring
Hollow channel, vibration barrel bore, the through hole that opens up of vibration connecting plate and mouth mold die cavity are coaxially set and are corresponding in turn to shape
Into rubber flow channel, one end of guiding mechanism 4 is fixedly connected with vibration connecting plate 2, and the other end coordinates with the gap of connection ring 5；
The pressure ring 10 that rubber Dynamic Extrusion shaped device is set is threadedly coupled with slip ring 7, and the size and slip ring 7 of the internal diameter of pressure ring 10 are hollow
Passage it is equal in magnitude.
Embodiment 2
Using the device of embodiment 1, Dynamic Extrusion and f=0HZ, A=during vibration parameters f=30HZ, A=0.3mm
Static extrusion during 0mm, the formed extrusion pressure change of extrusion are equally detected, and pressure curve contrast and experiment is shown in figure
2。
Fig. 2 is to apply in head under dynamic parameter f=30, A=0.3 vibration and stop vibrating static extrusion pressure curve,
1-20s therein is Dynamic Extrusion process, and 21-40s is stops vibrating static extrusion, and extrusion pressure curve can be with from figure
Find out, Dynamic Extrusion section extrusion pressure is 10000N, and the static extruding zone pressure for stopping vibration is more than 13000N, dynamically relatively
Nearly 30% is have dropped in static extrusion pressure, effect is clearly, it was demonstrated that dynamic vibration is effective.
As seen from Figure 3, (now fixed amplitude is 0.5mm) is extruded between frequency band 0-80Hz, with extrusion frequency
Increase, extrusion pressure constantly declines compared to static extrusion pressure 14000N, but under frequency≤5Hz, pressure curve
Unobvious drop, and 5-45Hz pressure drastically declines, and 45-80Hz extrusion pressures are also to decline, but relatively gentle, continue to increase
Vibration frequency, then pressure is suitable with 45-80Hz frequency band pressure declines, it is contemplated that improving the increased energy consumption of frequency vibration source can support
Disappear because the energy consumption that extrusion pressure descent tape is come is saved, consider the reduction advantageous effect frequency of extruded product quality and energy consumption
Scope is 5-80Hz.
As seen from Figure 3, (now fixed frequency is 30Hz) is extruded between amplitude range 0-0.8mm, with amplitude
Increase extrusion pressure constantly declines compared to static extrusion pressure 14000N, but in amplitude≤0.1mm, under pressure curve
Unobvious drop, and 0.3-0.8mm pressure drastically declines.
Only it is preferred embodiment of the present utility model described in upper, it is noted that for the ordinary skill of the art
For personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these are improved and profit
Decorations also should be regarded as the scope of protection of the utility model.
Claims (5)
- A kind of 1. rubber Dynamic Extrusion shaped device, it is characterised in that：Including rubber Cold-feed extruder, slip ring, vibration sleeve, Connecting plate, mouth mold and vibrational system are vibrated, wherein, vibrational system is connected with vibration connecting plate, and mouth mold is fixedly mounted on vibration and connected On fishplate bar, there is cavity among vibration sleeve, hollow channel is opened up in slip ring, one end of slip ring is fed by the way that connection ring and rubber are cold Material screw extruder is fixedly connected, and other end side circumference is provided with the first flange, and outer circumference is provided with the second flange, vibration Barrel forward end coordinates with the first flange gap, and elastic ring is installed on the second flange, the front end surface of the elastic ring and vibration sleeve It is in contact, the first flange along the circumferential direction opens up groove, and bushing is embedded in groove, and in vibration set front end surface installation pressure Ring reinforces bushing, and vibration sleeve rear end is fixedly connected with vibration connecting plate, and slip ring hollow channel, vibration barrel bore, vibration connect The through hole and mouth mold die cavity that fishplate bar opens up are coaxially set and are corresponding in turn to form rubber flow channel.
- 2. rubber Dynamic Extrusion shaped device as claimed in claim 1, it is characterised in that：Also include guiding mechanism, Guiding machine One end of structure is fixedly connected with vibration connecting plate, and the other end coordinates with being connected czermak space.
- 3. rubber Dynamic Extrusion shaped device as claimed in claim 1, it is characterised in that：The pressure ring connects with slip ring screw thread Connect, the size of the internal diameter of pressure ring is equal in magnitude with slip ring hollow channel.
- 4. rubber Dynamic Extrusion shaped device as claimed in claim 1, it is characterised in that：The vibration barrel forward end and first The gap length that flange gap coordinates is 0.03mm.
- 5. rubber Dynamic Extrusion shaped device as claimed in claim 1, it is characterised in that：The thickness of the elastic ring is 15- 18mm；The bushing is polytetrafluoroethylmaterial material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720465346.8U CN206855954U (en) | 2017-04-28 | 2017-04-28 | A kind of rubber Dynamic Extrusion shaped device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720465346.8U CN206855954U (en) | 2017-04-28 | 2017-04-28 | A kind of rubber Dynamic Extrusion shaped device |
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| Publication Number | Publication Date |
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| CN206855954U true CN206855954U (en) | 2018-01-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199684A (en) * | 2017-04-28 | 2017-09-26 | 青岛科技大学 | A kind of rubber Dynamic Extrusion shaped device and method |
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2017
- 2017-04-28 CN CN201720465346.8U patent/CN206855954U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199684A (en) * | 2017-04-28 | 2017-09-26 | 青岛科技大学 | A kind of rubber Dynamic Extrusion shaped device and method |
| CN107199684B (en) * | 2017-04-28 | 2022-09-06 | 青岛科技大学 | Dynamic extrusion molding device and method for rubber |
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