CN109318425A - A kind of rubber dual density product foam-in-mould formation system and its technique - Google Patents
A kind of rubber dual density product foam-in-mould formation system and its technique Download PDFInfo
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- CN109318425A CN109318425A CN201811353388.8A CN201811353388A CN109318425A CN 109318425 A CN109318425 A CN 109318425A CN 201811353388 A CN201811353388 A CN 201811353388A CN 109318425 A CN109318425 A CN 109318425A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 118
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 35
- 238000002347 injection Methods 0.000 claims abstract description 197
- 239000007924 injection Substances 0.000 claims abstract description 197
- 238000005187 foaming Methods 0.000 claims abstract description 82
- 238000000465 moulding Methods 0.000 claims abstract description 78
- 238000005987 sulfurization reaction Methods 0.000 claims abstract description 44
- 230000008569 process Effects 0.000 claims abstract description 35
- 238000004073 vulcanization Methods 0.000 claims abstract description 26
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000013022 venting Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 52
- 238000004513 sizing Methods 0.000 claims description 23
- 230000000694 effects Effects 0.000 claims description 20
- 239000000284 extract Substances 0.000 claims description 17
- 239000004088 foaming agent Substances 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 239000005864 Sulphur Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 208000002925 dental caries Diseases 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
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- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims 1
- 229910052731 fluorine Inorganic materials 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 70
- 239000007789 gas Substances 0.000 description 47
- 238000005265 energy consumption Methods 0.000 description 10
- 238000005486 sulfidation Methods 0.000 description 10
- 238000000354 decomposition reaction Methods 0.000 description 8
- 238000007664 blowing Methods 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
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- 239000002341 toxic gas Substances 0.000 description 4
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- 238000010276 construction Methods 0.000 description 3
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- 238000003303 reheating Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 229920002449 FKM Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
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- 206010054949 Metaplasia Diseases 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 206010000269 abscess Diseases 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
- B29C44/421—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum by plastizising the material into a shot cavity and injecting using a plunger
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
- B29C44/588—Moulds with means for venting, e.g. releasing foaming gas
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of rubber dual density product foam-in-mould formation system and its techniques, belong to rubber product technology field.The present invention includes die venting and hollow inflatable mechanism, it further include injection machine base and foaming and sulfidization molding pedestal and the injection device being individually fixed in the two and foaming and the mold of sulfurization forming apparatus, injection device and foaming and sulfurization forming apparatus is connected；Die venting and hollow inflatable mechanism include bracket, cylinder, cylinder block and hydraulic station；Bracket is the annular gantry that there is through-hole in centre, cylinder is fixed on the circular table of bracket, cylinder block is fixed on the bottom of the circular table of bracket, the built-in cylinder piston and oil cylinder piston for connecting same piston rod, cylinder head are communicated by tracheae with the mold inner-cavity of foaming and sulfurization forming apparatus respectively for cylinder and cylinder block.The present invention can complete injection, foaming and the vulcanization of rubber product in a mold, avoid product in the circulation of each process, to reduce production cost.
Description
Technical field
The invention belongs to rubber product technology fields, specifically, being related to a kind of rubber dual density product Mo Neifa
Steep formation system and its technique.
Background technique
Under normal circumstances, the substance of the high molecular materials hair engaging aperture such as rubber is made all to can be used as foaming agent, physical blowing is one
The common rubber pange technique of kind, principle is that foaming agent is dissolved in high polymer, in the pressure reduction or stabilization of system
Becoming gas when raising makes the substance of high polymer volume expansion and foaming of boiling, its advantage is that residue decomposition is not generated, it will not
Air or corrosion process equipment are polluted, but needs to increase the special installation (continuous frothing machine) to foam under high-pressure foam, for hair
It is particularly severe to steep equipment requirement, uses extremely inconvenient, also increases cost of equipment.
Solid rubber physical blowing production technology is that foaming agent decomposition releases gas and surrounded by rubber at high temperature under high pressure
Abscess is formed, so that rubber swelling is formed sponge, determines and the principal element for influencing foam structure has: gas forming amount, the gas of foaming agent
Diffusion velocity of the body in sizing material.Foaming agent decomposition temperature is generally between 130 DEG C -180 DEG C, and gas pressure is generally in 10MPa
Left and right, physical foaming process and sulfuration process required temperature and pressure are very close, ordinary circumstance, blown rubber formulation process flow
For carrying out rubber pange using continuous frothing machine, --- injection squeezes out compression molding --- vulcanization --- final product, technique
Cumbersome, equipment investment is big, and maintenance of equipment expense is high, and particularly with rubber powder dual density product, process flow is increasingly complex.
Through retrieving, Chinese patent publication No. CN 107618143 A, publication date 2018.01.23, a kind of denomination of invention: rubber
Glue injection moulding vulcanization production line, including conveying, the leading portion of conveying are equipped with rubber injection moulding machine, conveying
Back segment vulcanizing press is installed, the front of rubber injection moulding machine is equipped with across the Zhi Chengping above conveying
Platform, one end of supporting platform and the seat of honour of rubber injection moulding machine connect, in the front of rubber injection moulding machine in supporting platform
Die opening mechanism is installed and takes product construction, die opening mechanism and product construction is taken to be arranged along the direction perpendicular to conveying, it is defeated
It send guide rail to be equipped with linear guide, is slidably equipped in linear guide for taking out mold from rubber injection moulding machine, mold is defeated
It send to vulcanizing press and the product after vulcanization is delivered to the transport trolley taken below product construction.The injection molding of rubber sulphur
The injection of metaplasia producing line and vulcanization separately carry out, and consume energy, is time-consuming, at high cost.
Summary of the invention
1. technical problems to be solved by the inivention
Dual-density rubber product molding, foaming and vulcanization separately progress exists in the prior art to overcome, technique is cumbersome,
Equipment investment is big, energy consumption, time-consuming, problem at high cost, and the present invention provides a kind of rubber dual density product foam-in-mould molding system
System and its technique.The disposable foam-in-mould die press technology for forming of rubber dual density product can need to be only molded by the present invention in rubber
Molding machine is transformed, and can be required according to the different process of rubber product, and technological parameter needed for adjusting reduces rubber product
Cost, molding time, and reduce energy consumption, moreover it is possible to eliminate shipping expense between rubber product process.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme:
A kind of rubber dual density product foam-in-mould formation system, including die venting and hollow inflatable mechanism further include
Injection machine base and foaming and sulfidization molding pedestal and the injection device being individually fixed in the two and foaming and sulfidization molding
Device, the injection device are connected with the mold of foaming and sulfurization forming apparatus；It is described foaming and sulfurization forming apparatus to mould
The outer layer high density rubber sequentially added and internal layer blown rubber in tool carry out foaming and sulfidization molding, complete in a mold
At the injection, foaming and vulcanization of rubber product, avoid product in the circulation of each process, to reduce production cost；Mold row
Gas and hollow inflatable mechanism include bracket, cylinder, cylinder block and hydraulic station；The bracket is the annular table that there is through-hole in centre
Frame, the cylinder are fixed on the circular table of bracket, and the cylinder block is fixed on the bottom of the circular table of bracket, described
The built-in cylinder piston and oil cylinder piston for connecting same piston rod, the cylinder head pass through tracheae respectively for cylinder and cylinder block
It is communicated with the mold inner-cavity of foaming and sulfurization forming apparatus；The cylinder block is divided into upper cavity and lower chamber by oil cylinder piston,
Two cavitys pass through an oil pipe respectively and communicate with hydraulic station, by same piston rod that inflatable and exhaust device is integrated, by hydraulic
Driving piston rod of standing moves back and forth, and piston moves back pumping, and piston Forward inflation, cylinder piston and oil cylinder piston area ratio are
The ratio of oil pressure and air pressure adjusts hydraulic station pressure, it is ensured that the blowing pressure, the speed of piston traveling speed and fill in mold
Throughput is related, adjusts high pressure oil flow, i.e., the controllable piston speed of service can meet flow of aerating air, and then reach inflation
The requirement of pressure and purging vacuum degree.
Further embodiment, injection device include loading hopper, injection cylinder, plasticizing injection barrel, plasticizing heater, injection
Mouth controls oil cylinder, injection head and injection seat Shift cylinder；The loading hopper is communicated with the beginning of plasticizing injection barrel, plasticizing injection
In the cylinder barrel of the beginning insertion injection cylinder of barrel, and tight against the injection ram in injection cylinder；In the plasticizing injection barrel
Plasticizing injection screw is set, the end point of injection screw is plasticized, prestores plasticizing material chamber；The plasticizing material chamber that prestores passes through feeding
It manages and is connected to the material chamber of the injection nozzle control oil cylinder front end of plasticizing injection barrel bottom, the feed end and material chamber of the injection head connect
Logical, dispensing end is communicated with the mold of the foaming and sulfurization forming apparatus；The injection nozzle control cylinder tube and injection seat move
The cylinder barrel of dynamic oil cylinder is fixedly connected, and the piston rod of the two is backwards to setting, the injection seat Shift cylinder piston rod and the injection
Oil cylinder be both secured to injection machine base on, it is described plasticizing heater be set to plasticizing injection barrel outer wall, the plasticizing of sizing material and
Being temporarily stored in same plasticizing injection barrel before injection carries out, while plasticizing, before prestoring plasticizing and expecting that intracavitary completions is injected
It is temporary, avoid the transhipment of sizing material.
Further embodiment, foaming and sulfurization forming apparatus include die cylinder, upper mold half, mold core, mold core pumping
Take oil cylinder and lower mold half；The lower mold half is fixed on foaming and sulfidization molding pedestal, the surface cooperation of lower mold half
It is provided with upper mold half, the upper mold half is detachably connected with die cylinder；The die cylinder is fixed by fixed frame；Institute
It states the telescopic rod that mold core extracts oil cylinder with mold core to be detachably connected, and passes through mold core between upper mold half and lower mold half
It is flexible to extract oil cylinder；The upper mold half, lower mold half and mold core are equipped with according to the shape of rubber product；The mould
Core extracts oil cylinder and is fixed by platform, the synergistic effect of upper mold half, lower mold half and mold core, and can easily make needs
The tire class rubber product of dual density is wanted, it is easy to operate.
Further scheme, foaming and sulfurization forming apparatus further include the molding seat of honour and mold lower seat, upper mold half and
Lower mold half by the molding seat of honour and molds lower seat support respectively, the stabilization of whole system when improving injection, foaming and vulcanization
Property；The outer arm circulating type of cylinder is fixed with block heater, and the bottom side of cylinder is provided with cylinder and unloads stomata；The diameter of the cylinder
Greater than cylinder block, because molding mold inner-cavity gas can be at the heating period under die heater effect, discharge gas is slightly
Heating can be met the requirements, and in gas replenishment process, product inner cavity is sealing state, and cylinder is in state of pressure keeping after charging gas, directly
Until meeting cures requirements, energy consumption is small, therefore whole device is without noxious gas emission, environmental-friendly, meets increasingly
The environmental requirement being taken seriously.
Further scheme, foaming and sulfurization forming apparatus further include molding crossbeam, the hydraulic stem of the die cylinder
It is fixedly connected again with upper mold half after sequentially passing through molding crossbeam and the pilot hole for molding the seat of honour；The molding crossbeam is fixed on hair
On bubble and the fixed frame of sulfurization forming apparatus, molding crossbeam plays positioning, guiding and the triple role effect for stablizing opening and closing mold
Fruit, and ensure that stability when leakproofness and foaming, vulcanization in turn；The bottom of the cavity of resorption of cylinder is fixed with support limit block,
And unload stomata for the cylinder and reserve airspace, it plays cylinder piston and moves down position-limiting action.
Further scheme, foams and sulfurization forming apparatus further includes die heater；Die heater is set to conjunction
In the mould seat of honour and the lower seat of molding, sizing material is made to keep stable soft state in foaming and sulfidation, moreover, foaming agent decomposes
Temperature is generally between 130 DEG C -180 DEG C, and gas pressure is generally needed for 10MPa or so, physical foaming process and sulfuration process
Temperature and pressure are very close, and with into being foamed and being vulcanized in same mold, the temperature-pressure of molding decomposes its foaming agent
Gas is released, is adjusted die cylinder back pressure (die cylinder can be switched to floating position), foaming agent decomposition releases gas
It is enough to overcome and is surrounded to form cell pressure by rubber, rubber swelling is made to form spongy state, then carries out pressure maintaining, heat preservation, protects the time,
And then reach cures requirements；In the outer rim of cylinder piston, high-temperature resistant seal ring is set between cylinder inner wall, improves cylinder or more
The sealing effect of chamber, and avoid gas leakage in sulfidation.
Further scheme, tracheae and oil pipe are respectively high-pressure air pipe and high-pressure oil pipe, avoid revealing under high pressure；It is described
High-temperature resistant seal ring is polytetrafluoroethylene (PTFE) or viton seal ring, improves service life, prevents gas under long-term work state from letting out
Dew, and ensure that stability when leakproofness and vulcanization in turn.
Further scheme, foaming and sulfidization molding pedestal and foaming and sulfurization forming apparatus form fixed seat in the plane；Institute
Injection machine base is stated together with injection device composition activity seat in the plane；The activity seat in the plane corresponds to multiple fixed seats in the plane, and each solid
Determine to move back and forth between seat in the plane, same injection device corresponds to multiple foaming and sulfurization forming apparatus, in the vulcanization of rubber product
Cheng Zhong successively carries out different foaming and the injection work of sulfurization forming apparatus, greatly improves work efficiency；The both ends of tracheae point
The gentle cylinder of pipe fitting connected by mold connect pipe fitting and be fixed in upper mold half and cylinder, improve connection stability and
Leakproofness.
A kind of moulding process of rubber dual density product foam-in-mould formation system, in mold complete injection, foaming and
Sulfuration process, while improving the production efficiency, it is ensured that the stability of rubber product production.
Further moulding process, step are as follows:
Step 1: high density rubber is plasticized: injection nozzle controls oil cylinder and first blocks feed pipe and injection head, passes through charging
Bucket increases density rubber powder materials and enters plasticizing injection barrel, and plasticizing injection screw rotation, while rotation, plasticizing injection screw is supported
Tight injection ram persistently moves back, and the sizing material after plasticizing is intracavitary temporary in plasticizing material；
Step 2: molding: mold core extracts oil cylinder and mold core is put at the center between upper mold half and lower mold half,
Starting die cylinder moves down, and upper mold half is closed up with lower mold half, while mold core extracts oil cylinder and retracts；
Step 3: vacuumizing: starting hydraulic station, high pressure oil enter cylinder block epicoele by high-pressure oil pipe, push oil cylinder
Piston moves down, and oil cylinder piston drives cylinder piston to move together, and upper chamber of air cylinder forms vacuum, and the inner chamber gas of molding is drained；
Step 4: injection: the starting of injection seat Shift cylinder docks injection head with the injection port after molding, injection nozzle control
Liquefaction cylinder opens feed pipe and injection head, starts injection cylinder, and plasticizing injection screw Forward is intracavitary temporary by plasticizing material
Plasticizing sizing material is injected into upper mold half and lower mold half；Injection seat Shift cylinder is restarted, and injection head is exited；
Step 4: die sinking: starting die cylinder moves up, and opens upper mold half and lower mold half, and starting mold core extracts oil cylinder,
Take out mold core；
Step 5: secondary charging: will be poured into mold core after the rubber powder for being mixed with foaming agent metering；
Step 6: secondary mould closing: starting die cylinder moves down, and is closed upper mold half and lower mold half；
Step 7: heating: starting block heater heats cylinder interior gas；
Step 8: inflation: starting hydraulic station, high pressure oil enter cylinder block cavity of resorption by high-pressure oil pipe, push oil cylinder living
It moves beyond the Great Wall, oil cylinder piston drives cylinder piston to move up together, and the pressure high temperature hot gas of upper chamber of air cylinder is passed through air tube by cylinder piston
Squeeze into upper mold half and lower mold half inner cavity；
Step 9: foaming and vulcanization: the rubber product of upper mold half and lower mold half inner cavity is foamed and is sulfided into
Type；
Step 10: twice-die-opening: starting die cylinder moves up, and opens upper mold half and lower mold half, takes out dual density rubber
Glue product.
3. beneficial effect
Compared with prior art, the present invention has the following obvious advantages:
(1) rubber dual density product foam-in-mould formation system of the invention, can be completed in a system mold injection,
Foaming, sulfidation, can effectively solve it is secondary in rubber product production process pressurize, heat again, cause energy consumption, it is time-consuming,
Problem at high cost, to reduce the cost of rubber product, molding time, reduce energy consumption, and can eliminate rubber product process it
Between shipping expense；It furthermore reduces reheating bring noxious gas emission, reduces reheating bring rubber system
The rejection rate of product reduces reheating pressurization bring energy consumption, has achieved the effect that environmental protection and energy saving；Die venting and in
Empty inflation mechanism is integrated by inflatable and exhaust device by same piston rod, is moved back and forth by hydraulic station driving piston rod, living
Plug moves back pumping, piston Forward inflation, and cylinder piston and oil cylinder piston area ratio are the ratio of oil pressure and air pressure, adjusting liquid
Pressure station pressure, it is ensured that the blowing pressure, the speed of piston traveling speed is related with flow of aerating air in mold, adjusts high-pressure oil flow
Amount, i.e., the controllable piston speed of service, can meet flow of aerating air, and then reach the requirement of the blowing pressure and purging vacuum degree；
(2) rubber dual density product foam-in-mould formation system of the invention, can want according to the different process of rubber product
It asks, technological parameter needed for adjusting: injection pressure, injection temperature, vulcanization time reach product optimum efficiency；
(3) rubber dual density product foam-in-mould formation system of the invention makes full use of plasticizing injection screw to rotate through
Responsive to axial force in journey backward can be realized plasticizing material chamber and be gradually increased without applying extra power to plasticizing injection screw
And achieve the purpose that sizing material is temporary；
(4) rubber dual density product foam-in-mould formation system of the invention, entire mold (including upper mold half, lower half
Mold and mold core) molding and seal operation accomplish without any letup, it is simple, convenient quick；
(5) rubber dual density product foam-in-mould formation system of the invention, molding crossbeam play positioning, guiding and steady
Surely it is opened and closed the triple role effect of mold, and ensure that stability when leakproofness and vulcanization in turn；Block heater and mold
Heater can act synergistically, and because molding mold inner-cavity gas can be at the heating period under die heater effect, gas is discharged
It can slightly be met the requirements through block heater heating, in gas replenishment process, product inner cavity is sealing state, after cylinder charges gas
In state of pressure keeping, until meeting cures requirements, energy consumption is small, therefore whole device is without noxious gas emission, environment friend
It is good, meet the environmental requirement being increasingly taken seriously；
(6) rubber dual density product foam-in-mould formation system of the invention, die heater make sizing material in sulfidation
It is middle to keep stable soft state, moreover, after sizing material high-pressure foam, physical foaming process and sulfuration process required temperature and pressure
Very close, with into being foamed and being vulcanized in same mold, the temperature-pressure of molding makes its foaming agent decompose release outlet
Body is adjusted die cylinder back pressure (die cylinder can be switched to floating position), and foaming agent decomposition releases gas and is enough to overcome
It is surrounded to form cell pressure by rubber, rubber swelling is made to form spongy state, then carry out pressure maintaining, heat preservation, protect the time, and then reach
Cures requirements are not necessarily to secondary seal, that is, ensure that vulcanization effect, in turn avoid the leakage of high pressure gas；
(7) rubber dual density product foam-in-mould formation system of the invention, movable seat in the plane correspond to multiple fixed seats in the plane, and
It is moved back and forth between each fixed seat in the plane, same injection device corresponds to multiple foaming and sulfurization forming apparatus, in rubber product
Sulfidation in, successively carry out it is different foaming and sulfurization forming apparatus injection work, greatly improve work efficiency；
(8) rubber dual density product foam-in-mould formation system of the invention, support limit block play cylinder piston and move down
Position-limiting action avoids de- cylinder；The sealing effect of cylinder upper and lower cavity can be improved in high-temperature seal ring, and gas in sulfidation is avoided to let out
Dew；
(9) moulding process of the invention can continue production free of discontinuities, production efficiency and high degree of automation.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is schematic diagram after die venting of the invention and the amplification of hollow inflatable mechanism.
In figure: 1, injecting machine base；2, injection device；3, foaming and sulfurization forming apparatus；4, it die venting and hollow fills
Mechanism of qi structure；5, foaming and sulfidization molding pedestal；6, dual-density rubber product；7, tracheae；21, loading hopper；22, injection cylinder；23,
Plasticizing injection barrel；24, it is plasticized heater；25, plasticizing material chamber is prestored；26, feed pipe；27, injection nozzle controls oil cylinder；28, it infuses
Penetrate head；29, injection seat Shift cylinder；30, platform；31, die cylinder；32, crossbeam is molded；33, upper mold half；34, in mold
Core；35, mold core extracts oil cylinder；36, lower mold half；37, mold connects pipe fitting；38, die heater；40, cylinder connecting tube
Connector；41, cylinder；42, block heater；43, cylinder unloads stomata；44, cylinder block；45, oil pipe；46, hydraulic station；48, living
Stopper rod；49, bracket；221, injection ram；231, it is plasticized injection screw；331, the seat of honour is molded；361, lower seat is molded；411, cylinder
Piston；412, support limit block；413, high-temperature resistant seal ring；441, oil cylinder piston.
Specific embodiment
To further appreciate that the contents of the present invention, this present invention is described in detail in conjunction with attached drawing.
Embodiment 1
The rubber dual density product foam-in-mould formation system of the present embodiment, as shown in Figure 1, including die venting and hollow
Inflation mechanism 4 further includes injection machine base 1 and foaming and sulfidization molding pedestal 5 and the injection being individually fixed in the two dress
2 and foaming and sulfurization forming apparatus 3 are set, the injection device 2 is connected with the mold of foaming and sulfurization forming apparatus 3；It is described
Foaming and sulfurization forming apparatus 3 in mold the outer layer high density rubber sequentially added and internal layer blown rubber carry out foaming and
Sulfidization molding.As shown in Fig. 2, die venting and hollow inflatable mechanism 4 include bracket 49, cylinder 41, cylinder block 44 and hydraulic
Stand 46；The bracket 49 is the annular gantry that there is through-hole in centre, and the cylinder 41 is fixed on the circular table of bracket 49, described
Cylinder block 44 is fixed on the bottom of the circular table of bracket 49, and built-in connection is same respectively for the cylinder 41 and cylinder block 44
The cylinder piston 411 and oil cylinder piston 441 of piston rod 48, by tracheae 7 and foaming and sulfidization molding fills at the top of the cylinder 41
3 mold inner-cavity is set to communicate；The cylinder block 44 is divided by oil cylinder piston 441 for upper cavity and lower chamber, and two cavitys lead to respectively
An oil pipe 45 is crossed to communicate with hydraulic station 46.
The rubber dual density product foam-in-mould formation system of the present embodiment, die venting and hollow inflatable mechanism 4 pass through
Same piston rod is integrated by inflatable and exhaust device, is moved back and forth by hydraulic station driving piston rod, piston moves back pumping, piston
Forward inflation, cylinder piston and oil cylinder piston area ratio are the ratio of oil pressure and air pressure, adjust hydraulic station pressure, it is ensured that
The blowing pressure, the speed of piston traveling speed is related with flow of aerating air in mold, adjusts high pressure oil flow, i.e., controllable piston
The speed of service can meet flow of aerating air, and then reach the mold inner-cavity the blowing pressure and exhaust of foaming and sulfurization forming apparatus 3
The requirement of vacuum degree avoids moreover, whole system can complete injection, foaming and the vulcanization of rubber product in a mold
Product each process circulation, to reduce production cost.
Embodiment 2
The rubber dual density product foam-in-mould formation system of the present embodiment, with embodiment 1, improvements exist basic structure
In: as shown in Figure 1, injection device 2 includes loading hopper 21, injection cylinder 22, plasticizing injection barrel 23, plasticizing heater 24, note
Nozzle controls oil cylinder 27, injection head 28 and injection seat Shift cylinder 29；The beginning of the loading hopper 21 and plasticizing injection barrel 23
It communicates, in the cylinder barrel of the beginning insertion injection cylinder 22 of plasticizing injection barrel 23, and tight against the injection ram in injection cylinder 22
221；The plasticizing injection barrel 23 is built-in to be plasticized injection screw 231, is plasticized the end point of injection screw 231, prestores modeling
Material chamber 25；It is described to prestore the injection nozzle control oil cylinder 27 for being plasticized and expecting that chamber 25 injects 23 bottom of barrel by feed pipe 26 and plasticizing
The material chamber of front end is connected to, and the feed end of the injection head 28 is connected to material chamber, dispensing end and the foaming and sulfurization forming apparatus 3
Mold communicate；Injection nozzle control 27 cylinder barrel of oil cylinder is fixedly connected with the cylinder barrel of injection seat Shift cylinder 29, the work of the two
Backwards to being arranged, 29 piston rod of injection seat Shift cylinder and the injection cylinder 22 are both secured on injection machine base 1 stopper rod,
The plasticizing heater 24 is set to the outer wall of plasticizing injection barrel 23, the plasticizing of sizing material and is temporarily stored in same plasticizing before injection
It injects in barrel 23 and carries out, it is temporary before completing injection in plasticizing material chamber 25 prestoring while plasticizing, avoid turning for sizing material
Fortune.Foaming and sulfurization forming apparatus 3 include die cylinder 31, upper mold half 33, mold core 34, mold core extract oil cylinder 35 and under
Half mold 36；The lower mold half 36 is fixed on foaming and sulfidization molding pedestal 5, and the surface of lower mold half 36 is equipped with
There is upper mold half 33, the upper mold half 33 is detachably connected with die cylinder 31；The die cylinder 31 is solid by fixed frame
It is fixed；The telescopic rod that the mold core 34 extracts oil cylinder 35 with mold core is detachably connected, and in upper mold half 33 and lower mold half
Oil cylinder 35 is extracted by mold core between 36 to stretch；The upper mold half 33, lower mold half 36 and mold core 34 are according to rubber system
The shape of product is equipped with；The mold core extracts oil cylinder 35 and is fixed by platform 30, upper mold half 33, lower mold half 36 and mould
Have the synergistic effect of inner core 34, can easily make the tire class rubber product for needing ectonexine dual density, it is easy to operate.
The moulding process of the rubber dual density product foam-in-mould formation system of the present embodiment, injected with completion in mold,
Foaming and sulfuration process, while improving the production efficiency, it is ensured that the stability of rubber product production, specific steps are as follows:
Step 1: high density rubber is plasticized: injection nozzle control oil cylinder 27 first blocks feed pipe 26 and injection head 28, leads to
It crosses loading hopper 21 and increases density rubber powder materials and enter plasticizing injection barrel 23, plasticizing injection screw 231 rotates, while rotation,
Plasticizing injection screw 231 pushes against injection ram 221 and persistently moves back, and the sizing material after plasticizing is kept in plasticizing material chamber 25, sufficiently benefit
With the responsive to axial force in plasticizing 231 rotary course of injection screw, it is not necessarily to apply extra power to plasticizing injection screw 231,
The temporary effect of sizing material can be realized；
Step 2: molding: mold core extracts oil cylinder 35 and mold core 34 is put between upper mold half 33 and lower mold half 36
Center at, starting die cylinder 31 move down, upper mold half 33 is closed up with lower mold half 36, at the same mold core extraction oil cylinder 35 move back
It returns, completes the molding and seal operation of entire mold；
Step 3: vacuumizing: starting hydraulic station 46, high pressure oil enter 44 epicoele of cylinder block by high-pressure oil pipe, push
Oil cylinder piston 441 moves down, and oil cylinder piston 441 drives cylinder piston 411 to move together, and 41 epicoele of cylinder forms vacuum, will mold
Inner chamber gas drain；
Step 4: injection: injection seat Shift cylinder 29 starts, and injection head 28 is docked with the injection port after molding, is injected
Mouth control oil cylinder 27 opens feed pipe 26 and injection head 28, starts injection cylinder 22, and plasticizing injection screw 231 moves forward, will
The plasticizing sizing material kept in plasticizing material chamber 25 is injected into upper mold half 33 and lower mold half 36；Injection seat Shift cylinder 29 opens again
It is dynamic, exit injection head 28；
Step 4: die sinking: starting die cylinder 31 moves up, and opens upper mold half 33 and lower mold half 36, and starting mold core is taken out
Oil cylinder 35 is taken, mold core 34 is taken out, forms the inner cavity of rubber product；
Step 5: secondary charging: will be poured into mold core after the rubber powder for being mixed with foaming agent metering；
Step 6: secondary mould closing: starting die cylinder 31 moves down, closure upper mold half 33 and lower mold half 36；
Step 7: inflation: starting hydraulic station 46, high pressure oil enter 44 cavity of resorption of cylinder block by high-pressure oil pipe, push oil
The cylinder piston 441 moves up, and oil cylinder piston 441 drives cylinder piston 411 to move up together, and cylinder piston 411 is by the height of 41 epicoele of cylinder
Body of calming the anger by air tube squeezes into upper mold half 33 and 36 inner cavity of lower mold half, makes interior intracavitary have foaming and conditions of vulcanization；
Step 8: foaming and sulphur foaming and vulcanization: are carried out to the rubber product of upper mold half 33 and 36 inner cavity of lower mold half
Chemical conversion type；
Step 9: twice-die-opening: starting die cylinder 31 moves up, and opens upper mold half 33 and lower mold half 36, takes out double
Density rubber product 6.
The rubber dual density product foam-in-mould formation system and its moulding process of the present embodiment, foaming agent decomposition temperature one
As between 130 DEG C -180 DEG C, gas pressure generally in 10MPa or so, makes full use of physical foaming process and sulfuration process institute
The very similar process conditions of temperature and pressure are needed, with into being foamed and vulcanized in same mold；Heating is carried out after molding to add
Pressure makes the decomposition of its foaming agent release gas, and die cylinder can be switched to floating position by adjusting 31 back pressure of die cylinder, foams
Agent decomposition releases gas and is enough to overcome is surrounded to form cell pressure by rubber, so that rubber swelling is formed spongy state, then carry out
Pressure maintaining heat preservation, protects the time, and then reaches cures requirements.
Embodiment 3
The rubber dual density product foam-in-mould formation system of the present embodiment, with embodiment 2, improvements exist basic structure
In:
Seat 361, upper mold half 33 and female die under foaming and sulfurization forming apparatus 3 further include the molding seat of honour 331 and mold
Tool 36 by the molding seat of honour 331 and molds lower seat 361 and supports respectively, when improving injection, foaming and vulcanization, whole system it is steady
It is qualitative.The outer arm circulating type of cylinder 41 is fixed with block heater 42, and the bottom side of cylinder 41 is provided with cylinder and unloads stomata 43；It is described
The diameter of cylinder 41 is greater than cylinder block 44, because molding mold inner-cavity gas can be at heating rank under die heater effect
Section, discharge gas is slightly heated and can be met the requirements, and in gas replenishment process, product inner cavity is sealing state, after cylinder charges gas
In state of pressure keeping, until meeting cures requirements, energy consumption is small, therefore whole device is without noxious gas emission, environment
Close friend meets the environmental requirement being increasingly taken seriously.
The moulding process of the rubber dual density product foam-in-mould formation system of the present embodiment, specific steps are as follows:
Step 1: high density rubber is plasticized: injection nozzle control oil cylinder 27 first blocks feed pipe 26 and injection head 28, leads to
It crosses loading hopper 21 and increases density rubber powder materials and enter plasticizing injection barrel 23, plasticizing injection screw 231 rotates, while rotation,
Plasticizing injection screw 231 pushes against injection ram 221 and persistently moves back, and the sizing material after plasticizing is kept in plasticizing material chamber 25, sufficiently benefit
With the responsive to axial force in plasticizing 231 rotary course of injection screw, it is not necessarily to apply extra power to plasticizing injection screw 231,
The temporary effect of sizing material can be realized；
Step 2: molding: mold core extracts oil cylinder 35 and mold core 34 is put between upper mold half 33 and lower mold half 36
Center at, starting die cylinder 31 move down, upper mold half 33 is closed up with lower mold half 36, at the same mold core extraction oil cylinder 35 move back
It returns, completes the molding and seal operation of entire mold；
Step 3: vacuumizing: starting hydraulic station 46, high pressure oil enter 44 epicoele of cylinder block by high-pressure oil pipe, push
Oil cylinder piston 441 moves down, and oil cylinder piston 441 drives cylinder piston 411 to move together, and 41 epicoele of cylinder forms vacuum, will mold
Inner chamber gas drain；
Step 4: injection: injection seat Shift cylinder 29 starts, and injection head 28 is docked with the injection port after molding, is injected
Mouth control oil cylinder 27 opens feed pipe 26 and injection head 28, starts injection cylinder 22, and plasticizing injection screw 231 moves forward, will
The plasticizing sizing material kept in plasticizing material chamber 25 is injected into upper mold half 33 and lower mold half 36；Injection seat Shift cylinder 29 opens again
It is dynamic, exit injection head 28；
Step 4: die sinking: starting die cylinder 31 moves up, and opens upper mold half 33 and lower mold half 36, and starting mold core is taken out
Oil cylinder 35 is taken, mold core 34 is taken out, forms the inner cavity of rubber product；
Step 5: secondary charging: will be poured into mold core after the rubber powder for being mixed with foaming agent metering；
Step 6: secondary mould closing: starting die cylinder 31 moves down, closure upper mold half 33 and lower mold half 36；
Step 7: heating: starting block heater 42 heats gas in cylinder 41；
Step 8: inflation: starting hydraulic station 46, high pressure oil enter 44 cavity of resorption of cylinder block by high-pressure oil pipe, push oil
The cylinder piston 441 moves up, and oil cylinder piston 441 drives cylinder piston 411 to move up together, and cylinder piston 411 is by the height of 41 epicoele of cylinder
Super pressure-high temperature gas squeezes into upper mold half 33 and 36 inner cavity of lower mold half by air tube, makes interior intracavitary have foaming and conditions of vulcanization；
Step 9: foaming and vulcanization: upper mold half 33 and the rubber product 6 of 36 inner cavity of lower mold half are vulcanized, gas
Cylinder 41 is in state of pressure keeping after charging gas, and until meeting cures requirements, energy consumption is small, therefore whole device is without nocuousness
Gas discharge, it is environmental-friendly, meet the environmental requirement being increasingly taken seriously；
Step 10: twice-die-opening: starting die cylinder 31 moves up, and opens upper mold half 33 and lower mold half 36, takes out double
Density rubber product 6.
Embodiment 4
The rubber dual density product foam-in-mould formation system of the present embodiment, with embodiment 3, improvements exist basic structure
In: it foams and sulfurization forming apparatus 3 further includes molding crossbeam 32, the hydraulic stem of the die cylinder 31 sequentially passes through molding crossbeam
32 with molding the seat of honour 331 pilot hole after be fixedly connected again with upper mold half 33；The molding crossbeam 32 is fixed on foaming and sulphur
On the fixed frame for changing molding machine 3, molding crossbeam plays positioning, guiding and the triple role effect for stablizing opening and closing mold, and
And then it ensure that stability when leakproofness and foaming, vulcanization.The bottom of the cavity of resorption of cylinder 41 is fixed with support limit block 412,
And unload stomata 43 for the cylinder and reserve airspace, it plays cylinder piston and moves down position-limiting action.
Embodiment 5
The rubber dual density product foam-in-mould formation system of the present embodiment, with embodiment 4, improvements exist basic structure
In: it foams and sulfurization forming apparatus further includes die heater；Die heater 38 is set to the molding seat of honour 331 and molds lower seat
In 361, sizing material is made to keep stable soft state in foaming and sulfidation, in the outer rim of cylinder piston 411, with cylinder 41
High-temperature resistant seal ring 413 is set between inner wall, improves the sealing effect of cylinder upper and lower cavity, and gas in sulfidation is avoided to let out
Dew.Foaming and sulfidization molding pedestal 5 and foaming and sulfurization forming apparatus 3 form fixed seat in the plane；The injection machine base 1 is together with note
2 composition activity seat in the plane of injection device；The activity seat in the plane corresponds to multiple fixed seats in the plane, and back and forth transports between each fixed seat in the plane
It is dynamic, in the sulfidation of rubber product, different foaming and the injection work of sulfurization forming apparatus 3 are successively carried out, is greatly improved
Working efficiency.
The moulding process of the rubber dual density product foam-in-mould formation system of the present embodiment, step are as follows:
Step 1: high density rubber is plasticized: injection nozzle control oil cylinder 27 first blocks feed pipe 26 and injection head 28, leads to
It crosses loading hopper 21 and increases density rubber powder materials and enter plasticizing injection barrel 23, plasticizing injection screw 231 rotates, while rotation,
Plasticizing injection screw 231 pushes against injection ram 221 and persistently moves back, and the sizing material after plasticizing is kept in plasticizing material chamber 25, sufficiently benefit
With the responsive to axial force in plasticizing 231 rotary course of injection screw, it is not necessarily to apply extra power to plasticizing injection screw 231,
The temporary effect of sizing material can be realized；
Step 2: molding: mold core extracts oil cylinder 35 and mold core 34 is put between upper mold half 33 and lower mold half 36
Center at, starting die cylinder 31 move down, upper mold half 33 is closed up with lower mold half 36, at the same mold core extraction oil cylinder 35 move back
It returns, completes the molding and seal operation of entire mold；
Step 3: vacuumizing: starting hydraulic station 46, high pressure oil enter 44 epicoele of cylinder block by high-pressure oil pipe, push
Oil cylinder piston 441 moves down, and oil cylinder piston 441 drives cylinder piston 411 to move together, and 41 epicoele of cylinder forms vacuum, will mold
Inner chamber gas drain；
Step 4: injection: injection seat Shift cylinder 29 starts, and injection head 28 is docked with the injection port after molding, is injected
Mouth control oil cylinder 27 opens feed pipe 26 and injection head 28, starts injection cylinder 22, and plasticizing injection screw 231 moves forward, will
The plasticizing sizing material kept in plasticizing material chamber 25 is injected into upper mold half 33 and lower mold half 36；Injection seat Shift cylinder 29 opens again
It is dynamic, exit injection head 28；
Step 4: die sinking: starting die cylinder 31 moves up, and opens upper mold half 33 and lower mold half 36, and starting mold core is taken out
Oil cylinder 35 is taken, mold core 34 is taken out, forms the inner cavity of rubber product；
Step 5: secondary charging: will be poured into mold core after the rubber powder for being mixed with foaming agent metering；
Step 6: secondary mould closing: starting die cylinder 31 moves down, closure upper mold half 33 and lower mold half 36；
Step 7: heating: starting block heater 42 heats gas in cylinder 41；
Step 8: inflation: starting hydraulic station 46, high pressure oil enter 44 cavity of resorption of cylinder block by high-pressure oil pipe, push oil
The cylinder piston 441 moves up, and oil cylinder piston 441 drives cylinder piston 411 to move up together, and cylinder piston 411 is by the height of 41 epicoele of cylinder
Super pressure-high temperature gas squeezes into upper mold half 33 and 36 inner cavity of lower mold half by air tube, makes interior intracavitary have foaming and conditions of vulcanization；
Step 9: foaming and vulcanization: starting die heater 38 heats mold inner-cavity, and is filled in step 7
Pressure high temperature hot gas synergistic effect, upper mold half 33 and the rubber product 6 of 36 inner cavity of lower mold half are vulcanized, cylinder 41
It is in state of pressure keeping after charging gas, until meeting cures requirements, energy consumption is small, therefore whole device is without pernicious gas
Discharge, it is environmental-friendly, meet the environmental requirement being increasingly taken seriously；Curing temperature: 130 DEG C -180 DEG C；Sulfide stress: 1.0
~10MPa requires to be adjusted accordingly according to the different process of rubber product；
Step 10: telephone-moving: in sulfidation, injection machine base 1 is moved to together with the moving machine position that injection device 2 forms
The fixation seat in the plane that next foaming and sulfidization molding pedestal 5 are formed together with foaming and sulfurization forming apparatus 3 and hollow devices 4
Side repeats step 1 to nine；
Step 11: twice-die-opening: starting die cylinder 31 moves up, and opens upper mold half 33 and lower mold half 36, takes out
Dual-density rubber product 6.
Embodiment 6
The rubber dual density product foam-in-mould formation system of the present embodiment, with embodiment 5, improvements exist basic structure
In: tracheae 7 and oil pipe 45 respectively high-pressure air pipe and high-pressure oil pipe avoid revealing under high pressure；The high-temperature resistant seal ring 413 is
Polytetrafluoroethylene (PTFE) or viton seal ring, improve service life, and prevent gas leakage under long-term work state, and ensure that in turn
Stability when leakproofness and vulcanization.The both ends of tracheae 7 connect pipe fitting 37 and cylinder connecting tube connector 40 by mold respectively
It is fixed in upper mold half 33 and cylinder 41, improves the stability and leakproofness of connection.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (10)
1. a kind of rubber dual density product foam-in-mould formation system, which is characterized in that including die venting and hollow inflatable machine
Structure (4) further includes injection machine base (1) and foaming and sulfidization molding pedestal (5) and the injection being individually fixed in the two dress
(2) and foaming and sulfurization forming apparatus (3) are set, the injection device (2) is connected with the mold of foaming and sulfurization forming apparatus (3)
It is logical；It is described foaming and sulfurization forming apparatus (3) to the outer layer high density rubber sequentially added and internal layer blown rubber in mold
Carry out foaming and sulfidization molding；
The die venting and hollow inflatable mechanism (4) include bracket (49), cylinder (41), cylinder block (44) and hydraulic station
(46)；The bracket (49) is the annular gantry that there is through-hole in centre, and the cylinder (41) is fixed on the circular table of bracket (49)
On, the cylinder block (44) is fixed on the bottom of the circular table of bracket (49), the cylinder (41) and cylinder block (44)
The cylinder piston (411) and oil cylinder piston (441) of the built-in same piston rod (48) of connection respectively, cylinder (41) top pass through
Tracheae (7) is communicated with the mold inner-cavity of foaming and sulfurization forming apparatus (3)；The cylinder block (44) is by oil cylinder piston (441)
It is divided into upper cavity and lower chamber, two cavitys pass through an oil pipe (45) respectively and communicate with hydraulic station (46).
2. rubber dual density product foam-in-mould formation system as described in claim 1, which is characterized in that the injection device
It (2) include loading hopper (21), injection cylinder (22), plasticizing injection barrel (23), plasticizing heater (24), injection nozzle control oil cylinder
(27), injection head (28) and injection seat Shift cylinder (29)；The beginning phase of the loading hopper (21) and plasticizing injection barrel (23)
It is logical, in the cylinder barrel of beginning insertion injection cylinder (22) of plasticizing injection barrel (23), and tight against the injection in injection cylinder (22)
Piston (221)；Plasticizing injection barrel (23) is built-in to be plasticized injection screw (231), is plasticized the end of injection screw (231)
Place prestores plasticizing material chamber (25)；Plasticizing material chamber (25) that prestores passes through feed pipe (26) and plasticizing injection barrel (23)
The material chamber connection of injection nozzle control oil cylinder (27) front end of bottom, the feed end of the injection head (28) are connected to material chamber, inject
It holds and is communicated with the mold of the foaming and sulfurization forming apparatus (3)；Injection nozzle control oil cylinder (27) cylinder barrel and injection seat move
The cylinder barrel of dynamic oil cylinder (29) is fixedly connected, the piston rod of the two backwards to being arranged, injection seat Shift cylinder (29) piston rod with
The injection cylinder (22) is both secured in injection machine base (1), and the plasticizing heater (24) is set to plasticizing injection barrel
(23) outer wall.
3. rubber dual density product foam-in-mould formation system as claimed in claim 2, which is characterized in that the foaming and sulphur
Change molding machine (3) include die cylinder (31), upper mold half (33), mold core (34), mold core extract oil cylinder (35) and under
Half mold (36)；The lower mold half (36) is fixed on foaming and sulfidization molding pedestal (5), the surface of lower mold half (36)
It is equipped with upper mold half (33), the upper mold half (33) is detachably connected with die cylinder (31)；The die cylinder
(31) it is fixed by fixed frame；The telescopic rod that the mold core (34) extracts oil cylinder (35) with mold core is detachably connected, and
Oil cylinder (35) are extracted by mold core between upper mold half (33) and lower mold half (36) to stretch；The upper mold half (33), lower half
Mold (36) and mold core (34) are equipped with according to the shape of rubber product；The mold core extracts oil cylinder (35) and passes through platform
(30) fixed.
4. rubber dual density product foam-in-mould formation system as claimed in claim 3, which is characterized in that the cylinder (41)
Outer arm circulating type be fixed with block heater (42), the bottom side of cylinder (41) is provided with cylinder and unloads stomata (43)；The cylinder
(41) diameter is greater than cylinder block (44).
5. rubber dual density product foam-in-mould formation system as claimed in claim 4, which is characterized in that the foaming and sulphur
Changing molding machine (3) further includes molding crossbeam (32), and the hydraulic stem of the die cylinder (31) sequentially passes through molding crossbeam (32)
It is fixedly connected again with upper mold half (33) with after the pilot hole of the molding seat of honour (37)；The molding crossbeam (32) be fixed on foaming and
On the fixed frame of sulfurization forming apparatus (3)；The bottom of the cavity of resorption of the cylinder (41) is fixed with support limit block (412), and is
The cylinder unloads stomata (43) and reserves airspace.
6. rubber dual density product foam-in-mould formation system as claimed in claim 4, which is characterized in that the foaming and sulphur
Changing molding machine (3) further includes die heater (38)；The die heater (38) is set to the molding seat of honour (331) and molds
In lower seat (361)；In the outer rim of the cylinder piston (411), high-temperature resistant seal ring is set between cylinder (41) inner wall
(413)。
7. a kind of rubber dual density product foam-in-mould formation system as claimed in claim 6, which is characterized in that the tracheae
(7) and oil pipe (45) is respectively high-pressure air pipe and high-pressure oil pipe；The high-temperature resistant seal ring (413) is polytetrafluoroethylene (PTFE) or fluorine rubber
Glue sealing ring.
8. a kind of rubber dual density product foam-in-mould formation system as described in claim 1 to 7 is any, which is characterized in that
The foaming and sulfidization molding pedestal (5) and foaming and sulfurization forming apparatus (3) form fixed seat in the plane；The injection machine base
(1) together with injection device (2) composition activity seat in the plane；The activity seat in the plane corresponds to multiple fixed seats in the plane, and in each fixed seat in the plane
Between move back and forth；The both ends of the tracheae (7) pass through mold connection pipe fitting (37) and cylinder connecting tube connector (40) respectively
It is fixed in upper mold half (33) and cylinder (41).
9. a kind of moulding process of rubber dual density product foam-in-mould formation system, which is characterized in that with completion note in mold
It penetrates, foam and sulfuration process.
10. the moulding process of rubber dual density product foam-in-mould formation system as claimed in claim 9, which is characterized in that step
Suddenly are as follows:
Step 1: high density rubber is plasticized: injection nozzle controls oil cylinder (27) and first blocks feed pipe (26) and injection head (28),
Increase density rubber powder materials by loading hopper (21) and enters plasticizing injection barrel (23), plasticizing injection screw (231) rotation, rotation
While, plasticizing injection screw (231) pushes against injection ram (221) and persistently moves back, and the sizing material after plasticizing expects chamber (25) in plasticizing
It is interior temporary；
Step 2: molding: mold core extracts oil cylinder (35) and mold core (34) is put into upper mold half (33) and lower mold half (36)
Between center at, starting die cylinder (31) move down, upper mold half (33) is closed up with lower mold half (36), at the same mold core extraction
Oil cylinder (35) is retracted；
Step 3: vacuumizing: starting hydraulic station (46), high pressure oil enter cylinder block (44) epicoele by high-pressure oil pipe, push
Oil cylinder piston (441) moves down, and oil cylinder piston (441) drives cylinder piston (411) to move together, and cylinder (41) epicoele is formed very
Sky drains the inner chamber gas of molding；
Step 4: injection: injection head (28) is docked with the injection port after molding, is injected by injection seat Shift cylinder (29) starting
Mouth controls oil cylinder (27) and opens feed pipe (26) and injection head (28), starts injection cylinder (22), is plasticized injection screw
(231) it moves forward, the plasticizing sizing material kept in plasticizing material chamber (25) is injected into upper mold half (33) and lower mold half (36)；Note
It penetrates a Shift cylinder (29) to restart, exits injection head (28)；
Step 4: die sinking: starting die cylinder (31) moves up, and opens upper mold half (33) and lower mold half (36), starts mold core
It extracts oil cylinder (35), takes out mold core (34)；
Step 5: secondary charging: will be poured into mold core after the rubber powder for being mixed with foaming agent metering；
Step 6: secondary mould closing: starting die cylinder (31) moves down, closure upper mold half (33) and lower mold half (36)；
Step 7: heating: cylinder (41) interior gas is heated in starting block heater (42)；
Step 8: inflation: starting hydraulic station (46), high pressure oil enter cylinder block (44) cavity of resorption by high-pressure oil pipe, push oil
The cylinder piston (441) moves up, and oil cylinder piston (441) drives cylinder piston (411) to move up together, and cylinder piston (411) is by cylinder
(41) pressure high temperature hot gas of epicoele squeezes into upper mold half (33) and lower mold half (36) inner cavity by air tube；
Step 9: foaming and sulphur foaming and vulcanization: are carried out to the rubber product of upper mold half (33) and lower mold half (36) inner cavity
Chemical conversion type；
Step 10: twice-die-opening: starting die cylinder (31) moves up, and opens upper mold half (33) and lower mold half (36), takes out
Dual-density rubber product (6).
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| CN110576558A (en) * | 2019-09-03 | 2019-12-17 | 计文华 | Injection molding production equipment and preparation method for dual-density solid tire |
| CN114801043A (en) * | 2022-06-29 | 2022-07-29 | 山东永利精工石油装备股份有限公司 | Polymer corrosion-resistant oil pipe preparation device and method for offshore oil exploitation |
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| CN114801043A (en) * | 2022-06-29 | 2022-07-29 | 山东永利精工石油装备股份有限公司 | Polymer corrosion-resistant oil pipe preparation device and method for offshore oil exploitation |
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Application publication date: 20190212 |