CN106142414A - A kind of method utilizing silica gel mould manufactured parts - Google Patents
A kind of method utilizing silica gel mould manufactured parts Download PDFInfo
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- CN106142414A CN106142414A CN201610609752.7A CN201610609752A CN106142414A CN 106142414 A CN106142414 A CN 106142414A CN 201610609752 A CN201610609752 A CN 201610609752A CN 106142414 A CN106142414 A CN 106142414A
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- mould
- silica gel
- framed
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- manufactured parts
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Classifications
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- 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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/42—Casting under special conditions, e.g. vacuum
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/40—Plastics, e.g. foam or rubber
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- 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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/44—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2063/00—Use of EP, i.e. epoxy resins or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention discloses a kind of method utilizing silica gel mould manufactured parts, including preparation and two big steps of parts grouping of silica gel mould, wherein the preparation of silica gel mould includes the preparation of mould mother's sample, framed making and part exemplar are put, silica gel treatment and the step such as type vacuum injecting and forming, die sinking；Parts grouping includes mould preparation, AB material processes and vacuum pouring, die sinking pickup and duplicate post-treating and other steps.Fabrication cycle of the present invention is short, and parts quality is high, can obtain multiple part in a short time, to meet the checking work of early stage.
Description
Technical field
The invention belongs to mould processing and manufacturing field, especially for a kind of method utilizing silica gel mould manufactured parts.
Background technology
RP technology is the abbreviation of rapid prototyping technique, also known as Rapid Prototyping technique, and it and RM(fast mould) technology
Modern manufacturing industry just plays an increasingly important role.Silicon rubber mould in RM technology is little mainly for the production of batch
Part.And the preparation method of existing silicon rubber mould is first by RP fabrication techniques prototype, then turn over silicon rubber mould processed by this prototype
Tool.This method time is longer, relatively costly.
China Patent Publication No. CN1270859A, publication date on October 25th, 2000, discloses one and quickly manufactures metal
Mould process method, the method is the most on computers by three-dimensionals such as Pro/Engineer, Unigraphic-II, Powershape
Modeling software designs die casting solid modelling；Stereo-lithography file is exported LOM lathe, produces die casting
Paper prototype part；By the paper prototype part of manufacture after treatment, as female sample of silicon rubber mould；Combine framed after, by silicon rubber
Glue host injects framed with firming agent, and vacuum defoamation solidifies, and takes out female sample and obtains silicon rubber mould, at silicon rubber mould
On the basis of pour into a mould out gypsum mould or the ceramic mould of die casting, finally combine foundry engieering and manufacture zinc base alloy die.The method
In silicon rubber mould play the effect of transition and conversion, by silicon rubber mould manufacture in order to the gypsum mould of casting metal mould or
Ceramic mould, is finally watered by gypsum mould or ceramic mould and outpours metal die, and metalwork finally or is obtained by metal die cast,
The moulding cycle of the method is the longest, and manufacturing cost is higher, is unfavorable for single-piece or the manufacture of small lot mould.
Summary of the invention
It is an object of the invention to provide a kind of method utilizing silica gel mould manufactured parts, fabrication cycle is short, product matter
Amount height, can obtain multiple part, in a short time to meet the checking work of early stage.
For achieving the above object, technical scheme is as follows:
The method utilizing silica gel mould manufactured parts of the present invention, comprises the following steps:
A, mould mother's calibration are standby: first remove the machined burrs of female sample, fill surface and be polishing to smooth, marking a point mould with adhesive tape
Face；
B, framed making are put with part exemplar: framed material adds under 20-30mm by the physical dimension of part exemplar is monolateral
Material, build square body framed, part exemplar is fixed on framed in, take ABS rod be fixed on framed in, ABS rod penetrates part
In space；
C, silica gel treatment and type vacuum injecting and forming: weigh liquid silica gel, add firming agent mix homogeneously, carry out vacuumizing and defoaming；Then
Being poured into by silica gel framed, evacuation carries out secondary deaeration, and the silica gel after deaeration terminates solidifies at 65-75 DEG C, the most quiet
Put and be cooled to 18-25 DEG C；
D, die sinking: remove framed, mark wave graticule at die joint, cuts mould open along wave graticule, takes out part sample
Part, extracts ABS rod simultaneously out and becomes sprue gate, obtain silica gel mould, upwards get some aerofluxuss with air tube at upper mold inner vertical
Hole, cleans silica gel mould surface and sprue gate, air-dries standby；
E, mould prepare: remove the residue in silica gel mould groove, check whether steam vent blocks, spray on mold cavity surface
Silicone oil mold release agent, combines silica gel mould and fixes with adhesive tape, and preheat at 50-70 DEG C；
F, AB material processes and vacuum pouring: weighs AB material, it is heated to 50-70 DEG C, then carries out evacuation process, stir
After mixing mix homogeneously, being poured into a mould from sprue gate by AB material, during cast, control temperature is more than 25 DEG C, recovers gas after being poured
Pressure, stands 5-10min；
G, die sinking pickup and duplicate post processing: being taken out by mould, put in calorstat and solidify, the temperature of calorstat is
60-80 DEG C, hardening time is 30-60min, and after completing solidification, duplicate is taken out in die sinking, removes running channel, polishes it, throws
Light, spray paint, obtain parts grouping part.
Described step B middle mold frame material is the one in ABS plate, lucite, plank, fibre board.
In described step B, part exemplar fixing means is for using suspension, sprue channel open support, exhaust duct support or directly put
The mode put.
In described step C, the vacuum defoamation time controls at 5-10min for the first time, and the time of vacuum defoamation for the second time controls
15-30min。
Firming agent in described step C is p-hydroxybenzenyl sulfonate.
In described step F, mixing time controls at 1-2min.
Described Resin A B material is isocyanates and epoxy resin, and proportioning is 1:1.
The invention have the benefit that
Silicon moulds prepared by the present invention, have deformation little, high temperature resistant, acid and alkali-resistance, the coefficient of expansion are low, shrinkage factor is low, low cost
Advantage, the method utilizing silica gel mould manufactured parts, fabrication cycle is short, easy to operate, and parts quality is good, precision is high, can be short
Multiple parts are obtained, to meet the checking work of early stage in phase.
Detailed description of the invention
Below by specific embodiment, the present invention is described in detail.
Embodiment 1
The method utilizing silica gel mould manufactured parts of the present invention, comprises the following steps:
A, mould mother's calibration are standby: first remove the machined burrs of female sample, fill surface and be polishing to smooth, marking a point mould with adhesive tape
Face；
B, framed making are put with part exemplar: framed material adds 20mm blanking by the physical dimension of part exemplar is monolateral,
Build square body framed, part exemplar is fixed on framed in, take ABS rod be fixed on framed in, ABS rod penetrates the space of part
In；
C, silica gel treatment and type vacuum injecting and forming: weigh liquid silica gel, add firming agent mix homogeneously, carry out vacuumizing and defoaming；Then
Being poured into by silica gel framed, evacuation carries out secondary deaeration, and the silica gel after deaeration terminates solidifies at 65 DEG C, then stands cold
But to 18-25 DEG C；
D, die sinking: remove framed, mark wave graticule at die joint, cuts mould open along wave graticule, takes out part sample
Part, extracts ABS rod simultaneously out and becomes sprue gate, obtain silica gel mould, upwards get some aerofluxuss with air tube at upper mold inner vertical
Hole, and with alcohol washes silica gel mould surface and sprue gate, air-dry standby；
E, mould prepare: remove the residue in silica gel mould groove, check whether steam vent blocks, spray on mold cavity surface
Silicone oil mold release agent, combines silica gel mould and fixes with adhesive tape, and preheat at 50 DEG C；
F, AB material processes and vacuum pouring: weighs AB material, it is heated to 50 DEG C, then carries out evacuation process, stirring
After mix homogeneously, being poured into a mould from sprue gate by AB material, during cast, control temperature is at 26 DEG C, recovers air pressure after being poured, quiet
Put 5min；
G, die sinking pickup and duplicate post processing: being taken out by mould, put in calorstat and solidify, the temperature of calorstat is 60
DEG C, hardening time is 30min, and after completing solidification, duplicate is taken out in die sinking, removes running channel, polishes it, polishes, sprays paint,
Obtain parts grouping part.
Described step B middle mold frame material is ABS plate.
In described step B, part exemplar fixing means is to use the mode hung.
In described step C, the vacuum defoamation time controls at 5min for the first time, and the time of vacuum defoamation for the second time controls
15min。
Firming agent in described step C is p-hydroxybenzenyl sulfonate.
In described step F, mixing time controls at 1min.
Described AB material is isocyanates and epoxy resin, and proportioning is 1:1.
Embodiment 2
The method utilizing silica gel mould manufactured parts of the present invention, comprises the following steps:
A, mould mother's calibration are standby: first remove the machined burrs of female sample, fill surface and be polishing to smooth, marking a point mould with adhesive tape
Face；
B, framed making are put with part exemplar: framed material adds 25mm blanking by the physical dimension of part exemplar is monolateral,
Build square body framed, part exemplar is fixed on framed in, take ABS rod be fixed on framed in, ABS rod penetrates the space of part
In；
C, silica gel treatment and type vacuum injecting and forming: weigh liquid silica gel, add firming agent mix homogeneously, carry out vacuumizing and defoaming；Then
Being poured into by silica gel framed, evacuation carries out secondary deaeration, and the silica gel after deaeration terminates solidifies at 70 DEG C, then stands cold
But to 22 DEG C；
D, die sinking: remove framed, mark wave graticule at die joint, cuts mould open along wave graticule, takes out part sample
Part, extracts ABS rod simultaneously out and becomes sprue gate, obtain silica gel mould, upwards get some aerofluxuss with air tube at upper mold inner vertical
Hole, and with alcohol washes silica gel mould surface and sprue gate, air-dry standby；
E, mould prepare: remove the residue in silica gel mould groove, check whether steam vent blocks, spray on mold cavity surface
Silicone oil mold release agent, combines silica gel mould and fixes with adhesive tape, and preheat at 60 DEG C；
F, AB material processes and vacuum pouring: weighs AB material, it is heated to 60 DEG C, then carries out evacuation process, stirring
After mix homogeneously, being poured into a mould from sprue gate by AB material, during cast, control temperature is at 30 DEG C, recovers air pressure after being poured, quiet
Put 8min；
G, die sinking pickup and duplicate post processing: being taken out by mould, put in calorstat and solidify, the temperature of calorstat is 70
DEG C, hardening time is 45min, and after completing solidification, duplicate is taken out in die sinking, removes running channel, polishes it, polishes, sprays paint,
Obtain parts grouping part.
Described step B middle mold frame material is lucite.
In described step B, part exemplar fixing means is the mode using sprue channel open to support.
In described step C, the vacuum defoamation time controls at 8min for the first time, and the time of vacuum defoamation for the second time controls
20min。
Firming agent in described step C is p-hydroxybenzenyl sulfonate.
In described step F, mixing time controls at 1.5min.
Described AB material is isocyanates and epoxy resin, and proportioning is 1:1.
Embodiment 3
The method utilizing silica gel mould manufactured parts of the present invention, comprises the following steps:
A, mould mother's calibration are standby: first remove the machined burrs of female sample, fill surface and be polishing to smooth, marking a point mould with adhesive tape
Face；
B, framed making are put with part exemplar: framed material adds 30mm blanking by the physical dimension of part exemplar is monolateral,
Build square body framed, part exemplar is fixed on framed in, take ABS rod be fixed on framed in, ABS rod penetrates the space of part
In；
C, silica gel treatment and type vacuum injecting and forming: weigh liquid silica gel, add firming agent mix homogeneously, carry out vacuumizing and defoaming；Then
Being poured into by silica gel framed, evacuation carries out secondary deaeration, and the silica gel after deaeration terminates solidifies at 75 DEG C, then stands cold
But to 25 DEG C；
D, die sinking: remove framed, mark wave graticule at die joint, cuts mould open along wave graticule, takes out part sample
Part, extracts ABS rod simultaneously out and becomes sprue gate, obtain silica gel mould, upwards get some aerofluxuss with air tube at upper mold inner vertical
Hole, and with alcohol washes silica gel mould surface and sprue gate, air-dry standby；
E, mould prepare: remove the residue in silica gel mould groove, check whether steam vent blocks, spray on mold cavity surface
Silicone oil mold release agent, combines silica gel mould and fixes with adhesive tape, and preheat at 70 DEG C；
F, AB material processes and vacuum pouring: weighs AB material, it is heated to 70 DEG C, then carries out evacuation process, stirring
After mix homogeneously, being poured into a mould from sprue gate by AB material, during cast, control temperature is at 35 DEG C, recovers air pressure after being poured, quiet
Put 10min；
G, die sinking pickup and duplicate post processing: being taken out by mould, put in calorstat and solidify, the temperature of calorstat is 80
DEG C, hardening time is 60min, and after completing solidification, duplicate is taken out in die sinking, removes running channel, polishes it, polishes, sprays paint,
Obtain parts grouping part.
Described step B middle mold frame material is plank.
In described step B, part exemplar fixing means is to use the mode directly put.
In described step C, the vacuum defoamation time controls at 10min for the first time, and the time of vacuum defoamation for the second time controls
30min。
Firming agent in described step C is p-hydroxybenzenyl sulfonate.
In described step F, mixing time controls at 2min.
Described AB material is isocyanates and epoxy resin, and proportioning is 1:1.
Embodiment 4
The method utilizing silica gel mould manufactured parts of the present invention, comprises the following steps:
A, mould mother's calibration are standby: first remove the machined burrs of female sample, fill surface and be polishing to smooth, marking a point mould with adhesive tape
Face；
B, framed making are put with part exemplar: framed material adds 28mm blanking by the physical dimension of part exemplar is monolateral,
Build square body framed, part exemplar is fixed on framed in, take ABS rod be fixed on framed in, ABS rod penetrates the space of part
In；
C, silica gel treatment and type vacuum injecting and forming: weigh liquid silica gel, add firming agent mix homogeneously, carry out vacuumizing and defoaming；Then
Being poured into by silica gel framed, evacuation carries out secondary deaeration, and the silica gel after deaeration terminates solidifies at 72 DEG C, then stands cold
But to 23 DEG C；
D, die sinking: remove framed, mark wave graticule at die joint, cuts mould open along wave graticule, takes out part sample
Part, extracts ABS rod simultaneously out and becomes sprue gate, obtain silica gel mould, upwards get some aerofluxuss with air tube at upper mold inner vertical
Hole, and with alcohol washes silica gel mould surface and sprue gate, air-dry standby；
E, mould prepare: remove the residue in silica gel mould groove, check whether steam vent blocks, spray on mold cavity surface
Silicone oil mold release agent, combines silica gel mould and fixes with adhesive tape, and preheat at 65 DEG C；
F, AB material processes and vacuum pouring: weighs AB material, it is heated to 55 DEG C, then carries out evacuation process, stirring
After mix homogeneously, being poured into a mould from sprue gate by AB material, during cast, control temperature is at 28 DEG C, recovers air pressure after being poured, quiet
Put 6min；
G, die sinking pickup and duplicate post processing: being taken out by mould, put in calorstat and solidify, the temperature of calorstat is 75
DEG C, hardening time is 50min, and after completing solidification, duplicate is taken out in die sinking, removes running channel, polishes it, polishes, sprays paint,
Obtain parts grouping part.
Described step B middle mold frame material is fibre board.
In described step B, part exemplar fixing means is the mode using exhaust duct to support.
In described step C, the vacuum defoamation time controls at 7min for the first time, and the time of vacuum defoamation for the second time controls
25min。
Firming agent in described step C is p-hydroxybenzenyl sulfonate.
In described step F, mixing time controls at 2min.
Described AB material is isocyanates and epoxy resin, and proportioning is 1:1.
Claims (7)
1. the method utilizing silica gel mould manufactured parts, it is characterised in that comprise the following steps:
A, mould mother's calibration are standby: first remove the machined burrs of female sample, fill surface and be polishing to smooth, marking a point mould with adhesive tape
Face；
B, framed making are put with part exemplar: framed material adds under 20-30mm by the physical dimension of part exemplar is monolateral
Material, build square body framed, part exemplar is fixed on framed in, take ABS rod be fixed on framed in, ABS rod penetrates part
In space；
C, silica gel treatment and type vacuum injecting and forming: weigh liquid silica gel, add firming agent mix homogeneously, carry out vacuumizing and defoaming；Then
Being poured into by silica gel framed, evacuation carries out secondary deaeration, and the silica gel after deaeration terminates solidifies at 65-75 DEG C, the most quiet
Put and be cooled to 18-25 DEG C；
D, die sinking: remove framed, mark wave graticule at die joint, cuts mould open along wave graticule, takes out part sample
Part, extracts ABS rod simultaneously out and becomes sprue gate, obtain silica gel mould, upwards get some aerofluxuss with air tube at upper mold inner vertical
Hole, cleans silica gel mould surface and sprue gate, air-dries standby；
E, mould prepare: remove the residue in silica gel mould groove, check whether steam vent blocks, spray on mold cavity surface
Silicone oil mold release agent, combines silica gel mould and fixes with adhesive tape, and preheat at 50-70 DEG C；
F, AB material processes and vacuum pouring: weighs AB material, it is heated to 50-70 DEG C, then carries out evacuation process, stir
Mixing, after mix homogeneously, poured into a mould from sprue gate by AB material, during cast, control temperature is more than 25 DEG C, recovers after being poured
Air pressure, stands 5-10min；
G, die sinking pickup and duplicate post processing: being taken out by mould, put in calorstat and solidify, the temperature of calorstat is
60-80 DEG C, hardening time is 30-60min, and after completing solidification, duplicate is taken out in die sinking, removes running channel, polishes it, throws
Light, spray paint, obtain parts grouping part.
The method utilizing silicon rubber mould manufactured parts the most according to claim 1, it is characterised in that: described framed material
Material is the one in ABS plate, lucite, plank, fibre board.
The method utilizing silicon rubber mould manufactured parts the most according to claim 1, it is characterised in that: in described step B
Part exemplar fixing means is the mode using suspension, sprue channel open support, exhaust duct to support or directly put.
The method utilizing silicon rubber mould manufactured parts the most according to claim 1, it is characterised in that: in described step C
The time of vacuum defoamation for the first time controls at 5-10min, and the time of vacuum defoamation for the second time controls at 15-30min.
The method utilizing silicon rubber mould manufactured parts the most according to claim 1, it is characterised in that: in described step C
Firming agent be p-hydroxybenzenyl sulfonate.
The method utilizing silicon rubber mould manufactured parts the most according to claim 1, it is characterised in that: in described step F
Mixing time controls at 1-2min.
The method utilizing silicon rubber mould manufactured parts the most according to claim 1, it is characterised in that: described Resin A B
Material is isocyanates and epoxy resin, and proportioning is 1:1.
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| CN201610609752.7A CN106142414A (en) | 2016-07-29 | 2016-07-29 | A kind of method utilizing silica gel mould manufactured parts |
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