CN109571820A - A kind of rubber product processing method based on the demoulding of wax-pattern core - Google Patents
A kind of rubber product processing method based on the demoulding of wax-pattern core Download PDFInfo
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- CN109571820A CN109571820A CN201811329190.6A CN201811329190A CN109571820A CN 109571820 A CN109571820 A CN 109571820A CN 201811329190 A CN201811329190 A CN 201811329190A CN 109571820 A CN109571820 A CN 109571820A
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- Prior art keywords
- rubber product
- paraffin
- injecting glue
- metal outer
- outer mold
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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
- 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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
-
- 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
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
-
- 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
-
- 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
- B29C39/26—Moulds or cores
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention relates to a kind of rubber product processing methods based on the demoulding of wax-pattern core, make paraffin plug corresponding with rubber product geomery to be processed, insulating moulding coating or curing materials are smeared to paraffin appearance, make that it is suitable for different temperatures needed for all kinds of rubber-mouldings, to paraffin appearance, using paraffin plug and corresponding mold, to rubber product, layering is formed by several times, it is heated when demoulding by boiling water, the modes such as rubbing, by paraffin and its removal of the heat-barrier material of outside, obtain the high attached cavity product of Forming Quality, it can be by increasing silk screen to product inside to improve its intensity in forming process, processing method is simple, it is easy to operate, suitable for cavity and the processing that is difficult to the rubber product demoulded such as silicon rubber artificial-muscle etc., rubber product is solved the problems, such as because structure is complicated and can not demould using metal mandrel with cavity.
Description
Technical field
The present invention relates to rubber product processing technique field, especially a kind of rubber product processing based on the demoulding of wax-pattern core
Method.
Background technique
In rubber product processing, metal mandrel (metal core, metal inside) is widely used, but also has it to use defect.Make
When producing some rubber products with cavity with metal mandrel, such as artificial-muscle, understand because of complex-shaped, size is special,
And caoutchouc elasticity deflection is small or rubber wall is interior containing the reasons such as braiding silk screen are reinforced, generating rubber product can not be from metal core
The problem of being demoulded in stick.
Currently, 3D printing rubber product is not only at high cost, low efficiency, be not suitable for producing in enormous quantities, even more because of hot melt liquid
The reason of state rubber flows, cannot achieve thin-wall construction or the 3D with the rubber product of the smaller skew wall structure of gravity direction angle
Printing.
Summary of the invention
The applicant provides a kind of rubber product based on the demoulding of wax-pattern core for the disadvantage in above-mentioned existing production technology
Processing method, thus when solving to produce some rubber products with cavity using metal mandrel, such as artificial-muscle, software machine
People etc., can because complex-shaped, size is special and caoutchouc elasticity deflection is small or rubber wall in containing reinforcing braiding silk screen etc.
Reason generates the technical issues of rubber product can not be demoulded from metal mandrel.
The technical solution adopted in the present invention is as follows:
As shown in Figure 1, a kind of rubber product processing method based on the demoulding of wax-pattern core, specifically includes the following steps:
Step 1: processing paraffin mold core box:
Using cylindrical or rectangle material, it is respectively formed left half module and right half module along axial or longitudinal split,
Groove is made in left half module and right half module respectively, the groove forms mould between the left half module and right half module after closing in opposite directions
The structure of chamber, the die cavity is rubber product shape to be processed, and the die cavity is poured along axial or longitudinal opening, formation
Mouthful；
Step 2: production paraffin plug:
Paraffin mold core box will be formed after left half module and right half module mould assembly, by modified paraffin of the fusing point between 60 DEG C to 90 DEG C
Paraffin mold core box is poured into after raw material heating and melting from the cast gate, paraffin solidifies the stone for forming rubber product shape in die cavity
Wax plug；
Step 3: coatings wax mold core and hardening shell processing based on wax-pattern plug:
After the paraffin plug made in second step demoulding, 1. can directly it be used under the room temperature lower than 60 DEG C；2.
One layer of heat insulating coat is applied in paraffin plug outer surface, and dry solidification is at coatings wax mold core, it can be in 60-150 DEG C of higher temperature
Lower use；3. in the painting of paraffin plug outer surface one layer of solidification, hardened material, crust, and impregnate in the hot water, it is paraffin melting
After remove it, then obtain a hardening shell after strengthening, can be used at a high temperature of being higher than 150 DEG C；
Step 4: an injecting glue, processing rubber product internal layer:
Had using an injecting glue metal outer mold identical with the paraffin mold core box structure, and an injecting glue metal outer mold tool
Middle cavity dimension is greater than the cavity dimension of paraffin mold core box, by the paraffin plug or coatings wax mold core or hardening shell in third step
It is placed in the die cavity of injecting glue metal outer mold tool, and forms gap between an injecting glue metal outer mold tool die cavity wall, it is described
The structure in gap is identical as the structure of elastic bellows pneumatic muscles to be processed；Liquid-state silicon gel is injected outside an injecting glue metal
In mould cavity, the internal layer knot to form one layer of rubber product is consolidated in the appearance of paraffin plug or coatings wax mold core or hardening shell
Structure；
Step 5: knitmesh is placed in rubber product internal layer appearance integral weaving silk screen or part:
By paraffin plug or coatings wax mold core in the 4th step or the internal layer of the rubber product of hardening shell and its external consolidation
After structure integrally sloughs an injecting glue metal outer mold tool, one layer of silk screen of integral weaving or office outside the endothecium structure of rubber product
Knitmesh is placed in portion, to form inner framework；
Or by paraffin plug or coatings wax mold core in the 4th step or the rubber product of hardening shell and its external consolidation
After endothecium structure integrally demoulds, knitmesh, internal layer of the knitmesh along rubber product are placed in the endothecium structure outer partial of rubber product
Tile bonding in structure outer wall plane, to form inner framework；
Step 6: secondary injecting glue, processing rubber product outer layer or local outer layer:
Had using secondary injecting glue metal outer mold identical with an injecting glue metal outer mold lamps structure, and outside secondary injecting glue metal
The cavity dimension of mold is greater than the cavity dimension of injecting glue metal outer mold tool, and the inner framework made in the 5th step is placed in two
In secondary injecting glue metal outer mold tool die cavity, and gap is formed between the die cavity wall of secondary injecting glue metal outer mold tool, the gap
Structure is identical as the structure of rubber product to be processed；Liquid-state silicon gel is injected in secondary injecting glue metal outer mold tool die cavity, inside
Layer skeleton appearance consolidates the layer structure to form one layer of rubber product；
Or using secondary injecting glue metal outer mold tool identical with an injecting glue metal outer mold lamps structure, and secondary injecting glue is golden
Belong to the corresponding die cavity local size of outer mold and is greater than the corresponding die cavity local size of a mold, the internal layer that will be made in the 5th step
Skeleton is placed in the die cavity of secondary injecting glue metal outer mold tool, and forms part between the die cavity wall of secondary injecting glue metal outer mold tool
Gap, the structure of local gap and the structure of rubber product are identical；Liquid-state silicon gel is injected into secondary injecting glue metal outer mold tool die cavity
In, the layer structure to form one layer of rubber product is consolidated in inner framework appearance；
Step 7: rubber product sloughs external mold and removal core model:
The layer structure of inner framework in 6th step and the rubber product for being fixedly arranged at its appearance is integrally sloughed into secondary injection
It after glue metal outer mold tool, is 1. put into boiling water and impregnates, paraffin plug melts, and removes the paraffin in rubber product to get inside is arrived
There is the rubber product of braiding silk screen；2. be put into boiling water and impregnate, paraffin plug melt, remove rubber product in paraffin,
Rubber product is rubbed again, heat insulating coat is made to be torn or be crushed and is removed, and rubber product is cleaned out to be had to get to inside
Weave the rubber product of silk screen；3. being done to that will harden to clear up after shell is crushed containing the rubber product progress kneadding for hardening shell
Only to get the rubber product for having braiding silk screen to inside.
The rubber product of knitmesh, an only injecting glue mode, using institute are placed for no integral weaving silk screen or part
It is directly the rubber system of the 7th step without the 5th step, the 6th step process after stating the first, second, third, fourth step process
Pint removes external mold and removal core model technique.
The heat insulating coat uses: composite aluminium-magnesium-silicate insulating moulding coating, rare-earth thermal insulating coating, the green gloomy continuous heavy rain superfine of addition
The insulating moulding coating of Porous materials, hollow glass or ceramic microbead.
The curing materials use: the self-curing material or water soluble glue of volatility organic adhesive and sand grains mixing and
The drying hardened material of sand grains mixing.
Beneficial effects of the present invention are as follows:
Rubber processing method step of the invention is simple, easy to operate, suitable for cavity and being difficult to the rubber demoulded
The processing of glue product such as silicon rubber artificial-muscle etc. solves rubber product because structure is complicated and can not utilize with cavity
The problem of metal mandrel demoulds, while the present invention has the further advantage that
(1) paraffin plug of the present invention sufficiently uses the performance of paraffin, after being melted using boiling water heating or other heating means,
It can facilitate rapidly and neatly remove it, to obtain rubber product, rubber product cavity is made when avoiding conventional demoulding
At destruction, the forming quality of cavity is effectively increased.
(2) invention is respectively formed the internal layer and outer layer of elastic bellows pneumatic muscles in two times, and in internal layer shaping structures
Afterwards, since the support strength of paraffin plug is big, rigidity is good, convenient for weaving or placing the processing of silk screen, then secondary injecting glue is carried out, walked
Rapid perfect technology improves the intensity of rubber product.
(3) present invention coats heat-barrier material in its appearance, ensure that under higher temperature conditions when processing paraffin plug
When processing rubber material, rubber is completed to vulcanize and the indeformable fusing of paraffin in curing temperature.
(4) present invention coats curing materials in its appearance when processing paraffin plug, and impregnates in the hot water, and paraffin melts
It is removed it after change, obtains a hardening shell, ensure that under high-temperature processing conditions, rubber completes sulphur in curing temperature
Change.
(5) heat insulating coat used in the present invention be silicate coating or the green gloomy continuous heavy rain ultrafine micropore material of addition, it is hollow
The insulating moulding coating of glass or ceramic microbead；Curing materials used are the self-curing materials of volatility organic adhesive and sand grains mixing
The drying hardened material of material or water soluble glue and sand grains mixing, thus it is low in cost, and the simple high production efficiency of method.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Fig. 2 is the main sectional view of the elastic bellows pneumatic muscles of machine-shaping of the present invention.
Fig. 3 is enlarged drawing at A in Fig. 2.
Fig. 4 is the main sectional view (having paraffin plug in die cavity) of paraffin mold core box of the present invention.
Fig. 5 is in Fig. 4 along section B-B cross-sectional view；
Fig. 6 is the main view of injecting glue metal outer mold tool of the invention；
Fig. 7 is in Fig. 6 along C-C cross-sectional view；
Fig. 8 is the main view of the secondary injecting glue metal outer mold tool of the present invention；
Fig. 9 is in Fig. 8 along D-D cross-sectional view；
Figure 10 is that the rubber soft of two machine-shaping of the embodiment of the present invention is bent the main sectional view of finger；
Figure 11 is in Figure 10 along E-E cross-sectional view；
Figure 12 is the main sectional view of the paraffin mold core box figure of the embodiment of the present invention two；
Figure 13 is in Figure 12 along section B-B cross-sectional view.
Wherein: 1, elastic bellows pneumatic muscles；2, paraffin plug；3, right half module；4, Zuo Banmo；5, an injecting glue metal
Outer mold；6, secondary injecting glue metal outer mold tool；7, rubber soft is bent finger；8, paraffin barred body；9, upper diaphragm capsule；10, lower diaphragm capsule；
1a, silk screen；7a, knitmesh.
Specific embodiment
Specific embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment one:
1 processing method of elastic bellows pneumatic muscles based on the demoulding of wax-pattern core of the present embodiment one, elastic bellows gas
The structure of dynamic muscle 1 is as shown in Figures 2 and 3, specifically includes the following steps:
Step 1: processing paraffin mold core box: as shown in Figure 4 and Figure 5, using cylindrical or rectangle material, by it along axis
To or longitudinal split be respectively formed left half module 4 and right half module 3, make groove respectively in left half module 4 and right half module 3, it is described recessed
Slot forms die cavity between the left half module 4 and right half module 3 after closing in opposite directions, and the structure of the die cavity is the pneumatic flesh of elastic bellows
1 shape of meat, the die cavity form cast gate along axial or longitudinal opening；
Step 2: production paraffin plug: paraffin mold core box will be formed after 3 mould assembly of left half module 4 and right half module, by fusing point 60
DEG C to paraffin mold core box is poured into from the cast gate after the modified paraffin raw material heating and melting between 90 DEG C, paraffin coagulates in die cavity
Solid at 1 shape of elastic bellows pneumatic muscles paraffin plug 2；
Step 3: coatings wax mold core and hardening shell processing based on wax-pattern plug: the paraffin plug 2 that will be made in second step
After demoulding, 1. can directly it be used under the room temperature lower than 60 DEG C；2. 2 outer surface of paraffin plug apply one layer of heat insulating coat,
And dry solidification can be used at coatings wax mold core under 60-150 DEG C of higher temperature；3. being applied in 2 outer surface of paraffin plug
One layer of solidification, hardened material, crust, and impregnate in the hot water, it is removed it after paraffin melting, then a hardening is obtained after strengthening
Shell can use at a high temperature of being higher than 150 DEG C；
Step 4: an injecting glue, processing rubber product internal layer: as shown in Figure 6 and Figure 7, using with the paraffin mold core box
The identical injecting glue metal outer mold tool 5 of structure, and cavity dimension is greater than paraffin mold core box in an injecting glue metal outer mold tool 5
Cavity dimension, by third step paraffin plug 2 or coatings wax mold core or hardening shell be placed in injecting glue metal outer mold tool 5
In die cavity, and has with an injecting glue metal outer mold and form gap, the structure in the gap and elasticity to be processed between 5 die cavity walls
The structure of bellows pneumatic muscles 1 is identical；Liquid-state silicon gel is injected an injecting glue metal outer mold to have in 5 die cavitys, in paraffin plug
2 or coatings wax mold core or harden shell appearance consolidate the endothecium structure to form one layer of elastic bellows pneumatic muscles 1；
Step 5: rubber product internal layer appearance integral weaving silk screen, form inner framework: by paraffin plug 2 in the 4th step,
Or the endothecium structure of elastic bellows pneumatic muscles 1 of coatings wax mold core or hardening shell and its external consolidation is integrally sloughed once
After injecting glue metal outer mold tool 5, one layer of silk screen 1a of integral weaving outside the endothecium structure of elastic bellows pneumatic muscles 1, thus
Form inner framework；
Step 6: secondary injecting glue, processing rubber product outer layer: as shown in Figure 8 and Figure 9, using with outside an injecting glue metal
The identical secondary injecting glue metal outer mold tool 6 of 5 structure of mold, and the cavity dimension of secondary injecting glue metal outer mold tool 6 is greater than primary note
The inner framework made in 5th step is placed in secondary injecting glue metal outer mold and has 6 die cavitys by the cavity dimension of glue metal outer mold tool 5
In, and gap, the structure in the gap and elastic wave to be processed are formed between the die cavity wall of secondary injecting glue metal outer mold tool 6
The structure of line pipe pneumatic muscles 1 is identical；Liquid-state silicon gel is injected secondary injecting glue metal outer mold to have in 6 die cavitys, outside inner framework
Table consolidates the layer structure to form one layer of elastic bellows pneumatic muscles 1；
Step 7: rubber product sloughs external mold and removal core model: by the inner framework in the 6th step and being fixedly arranged at its appearance
Elastic bellows pneumatic muscles 1 layer structure integrally slough secondary injecting glue metal outer mold tool 6 after, be 1. put into boiling water and soak
Bubble, paraffin plug 2 melt, and remove the paraffin in elastic bellows pneumatic muscles 1 to get the elasticity for having braiding silk screen 1a to inside
Bellows pneumatic muscles 1；2. be put into boiling water and impregnate, paraffin plug 2 melt, remove elastic bellows pneumatic muscles 1 in
Paraffin, then rub elastic bellows pneumatic muscles 1, heat insulating coat is made to be torn or be crushed and remove, by elastic bellows gas
Dynamic muscle 1 is cleaned out to get the elastic bellows pneumatic muscles 1 for having braiding silk screen 1a to inside；3. being hardened to containing
The elastic bellows pneumatic muscles 1 of shell carry out kneadding, and cleaning out after hardening shell is crushed has braiding silk screen 1a to get to inside
Elastic bellows pneumatic muscles 1.
For the elastic bellows pneumatic muscles 1 of no braiding silk screen 1a, an only injecting glue mode, using described the
One, second, third, be directly the rubber system pint of the 7th step without the 5th step, the 6th step process after the 4th step process
Remove external mold and removal core model technique.
Heat insulating coat uses silicate coating: composite aluminium-magnesium-silicate insulating moulding coating, rare-earth thermal insulating coating, or adds green
The insulating moulding coating of gloomy continuous heavy rain ultrafine micropore material, hollow glass or ceramic microbead.
Curing materials use: the self-curing material or water soluble glue and sand grains of volatility organic adhesive and sand grains mixing
Mixed drying hardened material.
Embodiment two:
The rubber soft based on the demoulding of wax-pattern core of the present embodiment two is bent 7 processing method of finger, and rubber soft is bent hand
Refer to that 7 structure is as shown in Figure 10 and Figure 11, specifically includes the following steps:
Step 1: processing paraffin mold core box: as shown in Figure 12 and Figure 13, using rectangle material, it being splitted along longitudinal direction
It is respectively formed diaphragm capsule 9 and lower diaphragm capsule 10, makes groove respectively in upper diaphragm capsule 9 and lower diaphragm capsule 10, groove after closing in opposite directions
Upper diaphragm capsule 9 and lower diaphragm capsule 10 between form die cavity, the knot of die cavity constitutes rubber soft bending 7 shape of finger splitted along longitudinal direction
Shape, the opening of die cavity along longitudinal direction form cast gate；
Step 2: production wax-pattern barred body: paraffin mold core box will be formed after upper diaphragm capsule 9 and lower 10 mould assembly of diaphragm capsule, fusing point is existed
Paraffin mold core box is poured into from cast gate after modified paraffin raw material heating and melting between 60 DEG C to 90 DEG C, paraffin solidifies in die cavity
Form the paraffin barred body 8 of rubber soft bending 7 shape of finger；
Step 3: coatings wax mold core and hardening shell processing based on wax-pattern barred body: the paraffin barred body 8 that will be made in second step
After demoulding, 1. can directly it be used under the room temperature lower than 60 DEG C；2. 8 outer surface of paraffin barred body apply one layer of heat insulating coat,
And dry solidification can be used at coatings wax mold core under 60-150 DEG C of higher temperature；3. being applied in 8 outer surface of paraffin barred body
One layer of solidification, hardened material, crust, and impregnate in the hot water, it is removed it after paraffin melting, then a hardening is obtained after strengthening
Shell can use at a high temperature of being higher than 150 DEG C；
Step 4: an injecting glue, processing rubber product internal layer: using an identical injecting glue gold with paraffin mold core box structure
Belong to outer mold 5, and cavity dimension is greater than the cavity dimension of paraffin mold core box in an injecting glue metal outer mold tool 5, it will be in third step
Paraffin barred body 8 or coatings wax mold core or hardening shell be placed in the die cavity of injecting glue metal outer mold tool 5, and with an injecting glue
Metal outer mold, which has, forms gap between 5 die cavity walls, the structure phase of the structure in gap and rubber soft bending finger 7 to be processed
Together；Liquid-state silicon gel is injected in a mould cavity, consolidates shape in paraffin barred body 8 or coatings wax mold core or the appearance for hardening shell
At the endothecium structure of one layer of rubber soft bending finger 7；
Step 5: knitmesh is placed in part: by paraffin barred body 8 or coatings wax mold core in the 4th step or hardening shell and its outside
After the endothecium structure of the rubber soft bending finger 7 of consolidation integrally demoulds, outside the endothecium structure of rubber soft bending finger 7
Knitmesh 7a is placed in part, and knitmesh 7a tiles in the endothecium structure outer wall plane of rubber soft bending finger 7 and is bonded, to be formed
Inner framework；
Step 6: secondary injecting glue, processing rubber product part outer layer: has 5 structure phases using with an injecting glue metal outer mold
Same secondary injecting glue metal outer mold tool 6, and secondary injecting glue metal outer mold has 6 corresponding die cavity local sizes and is greater than a mold phase
The inner framework made in 5th step is placed in the die cavity of secondary injecting glue metal outer mold tool 6 by the die cavity local size answered, and with
Local gap is formed between the die cavity wall of secondary injecting glue metal outer mold tool 6, the structure and rubber soft of local gap are bent finger 7
Structure it is identical；Liquid-state silicon gel is injected secondary injecting glue metal outer mold to have in 6 die cavitys, consolidates to form one layer in inner framework appearance
The layer structure of rubber soft bending finger 7；
Step 7: by the inner framework in the 6th step and the outer layer knot for the rubber soft bending finger 7 for being fixedly arranged at its appearance
It after structure integrally demoulds, is 1. put into boiling water and impregnates, paraffin plug 2 melts, the paraffin in removal rubber soft bending finger 7, i.e.,
Obtain the rubber soft bending finger 7 that there is knitmesh 7a in part；2. be put into boiling water and impregnate, paraffin plug 2 melt, remove rubber
Glue software is bent the paraffin in finger 7, then rubs rubber soft bending finger 7, and heat insulating coat is made to be torn or be crushed and go
It removes, rubber soft bending finger 7 is cleaned out to get there is the rubber soft of knitmesh 7a to be bent finger 7 to part；3.
Kneadding is carried out to the rubber soft bending finger 7 for containing hardening shell, will harden to clean out after shell is crushed and be knitted to get to part
The rubber soft for netting 7a is bent finger 7.
Finger 7 is bent for the rubber soft of no knitmesh 7a, an only injecting glue mode, using described first, second,
After third, the 4th step process, without the 5th step, the 6th step process, be directly the 7th step rubber product slough external mold with
Remove core model technique.
Heat insulating coat uses silicate coating: composite aluminium-magnesium-silicate insulating moulding coating, rare-earth thermal insulating coating, or adds green
The insulating moulding coating of gloomy continuous heavy rain ultrafine micropore material, hollow glass or ceramic microbead.
Curing materials use: the self-curing material or water soluble glue and sand grains of volatility organic adhesive and sand grains mixing
Mixed drying hardened material.
The present invention is during finally sloughing paraffin plug, for processing rubber material under room temperature, higher temperatures and high temperature
When different modes can be used:
1, under room temperature: using paraffin plug, after processing rubber product, need to only be higher than the hot-water soak of paraffin melting point, melt
Change, removal paraffin, clears up rubber product, rubber product can be obtained；
2, under higher temperatures: heat-barrier material is applied in wax-pattern mandrel outer, using heat insulating coat paraffin plug, processing rubber product
Afterwards, melt, remove paraffin, rub, tear or be crushed heat insulating coat, clear up rubber product, obtain rubber product；
3, under high temperature: applying cementation, hardened material outside wax-pattern mandrel outer, melt, removal paraffin, strengthen hardening shell, adopt
It is plug with hardening shell, after processing rubber product, kneadding, broken hardening shell clear up rubber product, obtain rubber product.
Above-mentioned three kinds different removing modes make full use of the difference between paraffin melting point and rubber sulfurizing temp, smoothly complete
At demoulding, to obtain the high rubber product of Forming Quality.
Above description is explanation of the invention, is not intended to limit the invention, and limited range of the present invention is referring to right
It is required that within protection scope of the present invention, any type of modification can be made.
Claims (5)
1. a kind of rubber product processing method based on the demoulding of wax-pattern core, it is characterised in that: specifically includes the following steps:
Step 1: processing paraffin mold core box:
Using cylindrical or rectangle material, it is respectively formed left half module and right half module along axial or longitudinal split, left half
Groove is made in mould and right half module respectively, the groove forms die cavity between the left half module and right half module after closing in opposite directions, institute
The structure for stating die cavity is rubber product shape to be processed, and the die cavity forms cast gate along axial or longitudinal opening；
Step 2: production paraffin plug:
Paraffin mold core box will be formed after left half module and right half module mould assembly, by modified paraffin raw material of the fusing point between 60 DEG C to 90 DEG C
Paraffin mold core box is poured into after heating and melting from the cast gate, paraffin solidifies the paraffin core for forming rubber product shape in die cavity
Stick；
Step 3: coatings wax mold core and hardening shell processing based on wax-pattern plug:
After the paraffin plug made in second step demoulding, 1. can directly it be used under the room temperature lower than 60 DEG C；2. in stone
Wax plug outer surface applies one layer of heat insulating coat, and dry solidification can make at coatings wax mold core under 60-150 DEG C of higher temperature
With；3. in the painting of paraffin plug outer surface one layer of solidification, hardened material, crust, and impregnate in the hot water, it will after paraffin melting
It is removed, then a hardening shell is obtained after strengthening, and can be used at a high temperature of being higher than 150 DEG C；
Step 4: an injecting glue, processing rubber product internal layer:
Had using an injecting glue metal outer mold identical with the paraffin mold core box structure, and mould in an injecting glue metal outer mold tool
Chamber size be greater than paraffin mold core box cavity dimension, by third step paraffin plug or coatings wax mold core or hardening shell be placed in
In the die cavity of injecting glue metal outer mold tool, and gap, the gap are formed between an injecting glue metal outer mold tool die cavity wall
Structure it is identical as the structure of elastic bellows pneumatic muscles to be processed；Liquid-state silicon gel is injected into an injecting glue metal outer mold tool
In die cavity, the endothecium structure to form one layer of rubber product is consolidated in the appearance of paraffin plug or coatings wax mold core or hardening shell；
Step 5: knitmesh is placed in rubber product internal layer appearance integral weaving silk screen or part:
By paraffin plug or coatings wax mold core in the 4th step or the endothecium structure of the rubber product of hardening shell and its external consolidation
After entirety sloughs an injecting glue metal outer mold tool, one layer of silk screen of integral weaving or part are put outside the endothecium structure of rubber product
Knitmesh is set, to form inner framework；
Or by paraffin plug or coatings wax mold core in the 4th step or hardening shell and its external consolidation rubber product internal layer
After structure integrally demoulds, knitmesh, endothecium structure of the knitmesh along rubber product are placed in the endothecium structure outer partial of rubber product
Tile bonding in outer wall plane, to form inner framework；
Step 6: secondary injecting glue, processing rubber product outer layer or local outer layer:
Had using secondary injecting glue metal outer mold identical with an injecting glue metal outer mold lamps structure, and secondary injecting glue metal outer mold has
Cavity dimension be greater than an injecting glue metal outer mold tool cavity dimension, the inner framework made in the 5th step is placed in secondary injection
Glue metal outer mold has in die cavity, and forms gap, the structure in the gap between the die cavity wall of secondary injecting glue metal outer mold tool
It is identical as the structure of rubber product to be processed；Liquid-state silicon gel is injected in secondary injecting glue metal outer mold tool die cavity, in internal layer bone
Frame appearance consolidates the layer structure to form one layer of rubber product；
Or using secondary injecting glue metal outer mold tool identical with an injecting glue metal outer mold lamps structure, and outside secondary injecting glue metal
The corresponding die cavity local size of mold is greater than the corresponding die cavity local size of a mold, the inner framework that will be made in the 5th step
It is placed in the die cavity of secondary injecting glue metal outer mold tool, and formed between part between the die cavity wall of secondary injecting glue metal outer mold tool
Gap, the structure of local gap and the structure of rubber product are identical；Liquid-state silicon gel is injected in secondary injecting glue metal outer mold tool die cavity,
The layer structure to form one layer of rubber product is consolidated in inner framework appearance；
Step 7: rubber product sloughs external mold and removal core model:
The layer structure of inner framework in 6th step and the rubber product for being fixedly arranged at its appearance is integrally sloughed into secondary injecting glue gold
It after belonging to outer mold, is 1. put into boiling water and impregnates, paraffin plug melts, and the paraffin removed in rubber product has volume to get to inside
The rubber product of woven screen；2. be put into boiling water and impregnate, paraffin plug melts, and removes the paraffin in rubber product, then rubs
It rubs rubber product with the hands, so that heat insulating coat is torn or is crushed and remove, rubber product is cleaned out；3. being hardened to containing
The rubber product of shell carries out kneadding, cleans out after hardening shell is crushed.
2. a kind of rubber product processing method based on the demoulding of wax-pattern core as described in claim 1, it is characterised in that: for not having
There is integral weaving silk screen but the rubber product of part placement knitmesh, the 5th step is part placement knitmesh, the 6th step
It is greater than the corresponding office of injecting glue metal outer mold tool for the local cavity dimension that local secondary injecting glue, secondary injecting glue metal outer mold have
Portion's cavity dimension.
3. a kind of rubber product processing method based on the demoulding of wax-pattern core as described in claim 1, it is characterised in that: for not having
There is braiding silk screen and without the rubber product of part placement knitmesh, an only injecting glue mode, using described first, second, the
It three, is directly that the rubber product of the 7th step is sloughed external mold and gone without the 5th step, the 6th step process after the 4th step process
Decore mold technique.
4. a kind of rubber product processing method based on the demoulding of wax-pattern core as described in claim 1, it is characterised in that: it is described every
Hot coating uses: composite aluminium-magnesium-silicate insulating moulding coating, rare-earth thermal insulating coating, the green gloomy continuous heavy rain ultrafine micropore material of addition, hollow glass
Or the insulating moulding coating of ceramic microbead.
5. a kind of rubber product processing method based on the demoulding of wax-pattern core as described in claim 1, it is characterised in that: described solid
Change material to use: the self-curing material or water soluble glue of volatility organic adhesive and sand grains mixing and the drying of sand grains mixing
Hardened material.
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