CN104626407A - Inner wrapped spring-loaded oil seal mould and method for moulding inner wrapped spring-loaded oil seal by utilizing same - Google Patents
Inner wrapped spring-loaded oil seal mould and method for moulding inner wrapped spring-loaded oil seal by utilizing same Download PDFInfo
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- CN104626407A CN104626407A CN201510059503.0A CN201510059503A CN104626407A CN 104626407 A CN104626407 A CN 104626407A CN 201510059503 A CN201510059503 A CN 201510059503A CN 104626407 A CN104626407 A CN 104626407A
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Abstract
The invention relates to an inner wrapped spring-loaded oil seal mould and a method for moulding an inner wrapped spring-loaded oil seal by utilizing the inner wrapped spring-loaded oil seal mould, aiming at solving the problem that rejection rate is high during moulding of the inner wrapped spring-loaded oil seal in the prior art. A mould core part is arranged in an upper mould part, a lower cavity is arranged at the lower part, close to the outer end, of the more core part, a step-shaped upper cavity I and a step-shaped upper cavity II are arranged on the surface of a lower mould part, the adjacent side walls of the step-shaped upper cavity I and the step-shaped upper cavity II are step-shaped side walls, and the step-shaped side walls are used for placing a skeleton; an annular groove used for containing a spring is formed in the root part of the adjacent side walls of the step-shaped upper cavity II and the step-shaped upper cavity I, the depth of the annular groove is 1/3-1/3 of the outer diameter of the spring, and after the mould is assembled, an exhaust passage is formed between the lower mould part and the mould core part. The method for moulding the inner wrapped spring-loaded oil seal by utilizing the inner wrapped spring-loaded oil seal mould comprises the following steps: preheating the inner wrapped spring-loaded oil seal mould, arranging the skeleton on the step-shaped side wall of the lower mould part, putting the spring into the annular groove in the lower mould part, carrying out vulcanization moulding, opening the mould, and demoulding. The inner wrapped spring-loaded oil seal mould provided by the invention is used for moulding the inner wrapped spring-loaded oil seal.
Description
Technical field
The present invention relates to a kind of oil-tight mould and utilize the method for this mould molding oil sealing.
Background technology
Interior bag spring-loaded oil seal mould in the past used limits by structure, in use there is following defect: 1, spring locating features is unreasonable owing to designing, be not enough to resist the washing away of rubber mass, rubber mass in sulfidation by spring jack-up, spring displacement is out of shape, and causes product cannot be normally shaping; 2, mould is without exhaust passage, and after mould matched moulds, rubber mass is from top to bottom in flow process, causes gas backstreaming, can acceleration spring distortion displacement progress, product (interior bag spring-loaded oil seal) difficult forming, product in forming process percent defective up to 30%.
In addition, utilize existing interior bag spring-loaded oil seal mould and the shaping interior bag spring-loaded oil seal of method, due to structure and the set technological parameter unreasonable (as temperature, pressure etc.) of mould, cause the overlap on the interior bag spring-loaded oil seal surface of final molding automatically and separation of products, thus the presentation quality of product can not be affected.
Summary of the invention
The object of the present invention is to provide a kind of interior bag spring-loaded oil seal mould and the method with bag spring-loaded oil seal in this mould molding, with solve adopt existing mold and method shaping in bag spring-loaded oil seal, presentation quality is poor, the problem that percent defective is high.
Realize above-mentioned purpose, the technical scheme that the present invention takes is as follows:
Interior bag spring-loaded oil seal mould of the present invention, described interior bag spring-loaded oil seal mould comprises upper die and lower die, and described patrix comprises upper mould piece, core piece, jump ring I, jump ring II and mould bases plate I; Described counterdie comprises lower module, jump ring III and mould bases plate III;
Described upper mould piece and lower module are oppositely arranged up and down, and described jump ring I one end is connected with mould bases plate I, the other end is connected with upper mould piece; Described jump ring II one end is connected with core piece, the other end is connected with upper mould piece; Described core piece is arranged in the center cavity of upper mould piece, and the outer peripheral sidewall of core piece is provided with a upper mounting plate, and the center cavity inner circumferential sidewall of upper mould piece is provided with lower platform; The bottom of upper mould piece is provided with positioning boss under notch cuttype, and the bottom of core piece is provided with lower impressions near outer end, and the entity part between the outer peripheral sidewall of core piece and described lower impressions is held for compressing; Described lower module upper surface is provided with notch cuttype upper impression I and notch cuttype upper impression II, transition projection is provided with between notch cuttype upper impression I and notch cuttype upper impression II, the sidewall that notch cuttype upper impression I is adjacent with notch cuttype upper impression II is notch cuttype sidewall, and described notch cuttype sidewall is for placing skeleton; The root of the sidewall that notch cuttype upper impression II is adjacent with notch cuttype upper impression I is provided with one for holding the annular groove of spring; The groove depth of described annular groove is 1/3 ~ 1/3 of spring outer diameter; After mould matched moulds, the lower platform of upper mould piece and the upper mounting plate of core piece are fitted, the compression end of core piece is pressed on skeleton upper surface, under the notch cuttype of upper mould piece, positioning boss is arranged in the notch cuttype upper impression I of lower module, the lower end of core piece is arranged in the notch cuttype upper impression II of lower module, and described transition projection is arranged in the lower impressions of core piece; A reinforced chamber is formed by the lower impressions of positioning boss, core piece under the notch cuttype of upper mould piece and between the notch cuttype upper impression I of lower module and notch cuttype upper impression II; Skeleton and spring (11) are all arranged in described reinforced chamber; The lower space formed between module and core piece is exhaust passage.
The method of bag spring-loaded oil seal in bag spring-loaded oil seal mould molding in utilization of the present invention, described method comprises the steps:
Step one: the mould described in preheating; On vulcanizer, first preset that cure time is 130s ~ 720s, curing temperature be 150 DEG C ~ 200 DEG C and sulfide stress is 5MPa ~ 25 MPa; Afterwards, mould matched moulds is carried out preheating, preheat temperature is the preset temperature of vulcanizer, and preheating time is 50min ~ 4h;
Step 2: place skeleton, rubber mass and spring; After mold temperature is constant, by upper and lower for mould mould separately, skeleton is placed on the notch cuttype sidewall of lower module; Rubber mass is placed on the upper surface of skeleton; Spring being curved annular is placed in described annular groove, matched moulds afterwards;
Step 3: sulfidization molding; Mould after step 2 matched moulds is put into described vulcanizer, start vulcanizer, the sulfide stress preset by vulcanizer and temperature are to mould pressurizing and heating, rubber mass melts and flows in described reinforced chamber under pressure from top to bottom, and the gas produced in sulfidization molding process is discharged by described exhaust passage; Reach when cured vulcanizer preset cure time time, sulfidization molding terminates;
Step 4: die sinking; In obtaining after sulfidization molding, bag spring-loaded oil seal is attached in the lower impressions of core piece after departing from reinforced chamber, and move upward with patrix, patrix separates with counterdie;
Step 5: the demoulding; Core piece is together sunk with interior bag spring-loaded oil seal under the effect of ejector component, takes off interior bag spring-loaded oil seal.
The present invention has following beneficial effect:
1, mould of the present invention is two layers of template, two die sinking designs, and structure is simple, is convenient to produce, cheap for manufacturing cost.
2, the present invention is in order to prevent spring vibration, and the groove depth arranging annular groove is 1/2 ~ 1/3 of spring outer diameter, effectively can prevent the distortion of rubber mass spring in flow process, ensure that the shaping smoothly of product.
3, after mould matched moulds, be formed with exhaust passage between module and core piece down, when guaranteeing that rubber mass flows from top to bottom, the bubble of generation discharged in time, do not produce backflow, reduce by spring jack-up may, thus ensure that the shaping of product.
4, utilize mould of the present invention and the shaping interior bag spring-loaded oil seal of method, overlap can automatically and separation of products, and yield rate reaches 100%, and technique is simple, easily operation and realizing.
Accompanying drawing explanation
Fig. 1 is the front view after interior bag spring-loaded oil seal mould matched moulds of the present invention;
Fig. 2 is the front view before interior bag spring-loaded oil seal mould matched moulds of the present invention.
Component names shown in figure and label as follows:
Positioning boss 1-2, core piece 2, upper mounting plate 2-1, lower impressions 2-2, compression end 2-3, lower module 3, notch cuttype upper impression I 3-1, notch cuttype upper impression II 3-2, the protruding 3-3 of transition, mould bases plate I 4, mould bases plate III 5, jump ring III 6, jump ring I 7, jump ring II 8, ejector component 9, skeleton 10, spring 11, rubber mass 12, inner circumferential sidewall 13, exhaust passage 14 under upper mould piece 1, lower platform 1-1, notch cuttype.
Detailed description of the invention
Detailed description of the invention one: as depicted in figs. 1 and 2, interior bag spring-loaded oil seal mould, described interior bag spring-loaded oil seal mould comprises upper die and lower die, and described patrix comprises upper mould piece 1, core piece 2, jump ring I 7, jump ring II 8 and mould bases plate I 4; Described counterdie comprises lower module 3, jump ring III 6 and mould bases plate III 5;
Described upper mould piece 1 and lower module about 3 are oppositely arranged, and described jump ring I 7 one end is connected with mould bases plate I 4, the other end is connected with upper mould piece 1; Described jump ring II 8 one end is connected with core piece 2, the other end is connected with upper mould piece 1; Described core piece 2 is arranged in the center cavity of upper mould piece 1, and the outer peripheral sidewall of core piece 2 is provided with a upper mounting plate 2-1, and the center cavity inner circumferential sidewall of upper mould piece 1 is provided with lower platform 1-1; The bottom of upper mould piece 1 is provided with positioning boss 1-2 under notch cuttype, and the bottom of core piece 2 is provided with lower impressions 2-2 near outer end, and the entity part between the outer peripheral sidewall of core piece 2 and described lower impressions 2-2 holds 2-3 for compressing; Described lower module 3 upper surface is provided with notch cuttype upper impression I 3-1 and notch cuttype upper impression II 3-2, the protruding 3-3 of transition is provided with between notch cuttype upper impression I 3-1 and notch cuttype upper impression II 3-2, the sidewall that notch cuttype upper impression I 3-1 is adjacent with notch cuttype upper impression II 3-2 is notch cuttype sidewall, and described notch cuttype sidewall is L shape for placing the shape of skeleton 10(skeleton 10); The root of the sidewall that notch cuttype upper impression II 3-2 is adjacent with notch cuttype upper impression I 3-1 is provided with one for holding the annular groove of spring 11; The groove depth of described annular groove is 1/2 ~ 1/3 of spring 11 external diameter; After mould matched moulds, the lower platform 1-1 of the upper mould piece 1 and upper mounting plate 2-1 of core piece 2 fits (effect playing stable mould), the compression end 2-3 of core piece 2 is pressed on skeleton 10 upper surface (preventing skeleton 10 vibration), under the notch cuttype of upper mould piece 1, positioning boss 1-2 is arranged in notch cuttype upper impression I 3-1 of lower module 3, the lower end of core piece 2 is arranged in notch cuttype upper impression II 3-2 of lower module 3, the protruding 3-3 of described transition is arranged in the lower impressions 2-2 of core piece 2 (can time matched moulds after firm the fitting together of upper and lower mould of mould); By the lower impressions 2-2 of positioning boss 1-2, core piece 2 under the notch cuttype of upper mould piece 1 and form a reinforced chamber between notch cuttype upper impression I 3-1 of lower module 3 and notch cuttype upper impression II 3-2; Skeleton 10 and spring 11 are all arranged in described reinforced chamber; The space formed between lower module 4 and core piece 2 is exhaust passage 14.Mould is Double-layer plate type structure, and structure is simple.
Detailed description of the invention two: as depicted in figs. 1 and 2, the interior bag spring-loaded oil seal mould described in detailed description of the invention one, the groove depth of described annular groove is 1/2 of spring 11 external diameter.Setting like this, can make spring 11 be stabilized in annular groove, thus effectively prevent the distortion of rubber mass 12 spring 11 in flow process, ensure that the shaping smoothly of product.
Detailed description of the invention three: as depicted in figs. 1 and 2, the interior bag spring-loaded oil seal mould described in detailed description of the invention one, the groove depth of described annular groove is 1/3 of spring 11 external diameter.Setting like this, spring 11 is arranged in annular groove, thus effectively prevents the distortion of rubber mass 12 spring 11 in flow process, ensure that the shaping smoothly of product.
Detailed description of the invention four: a kind of method of bag spring-loaded oil seal in interior bag spring-loaded oil seal mould molding utilized described in detailed description of the invention one, described method comprises the steps:
Step one: the mould described in preheating; On vulcanizer, first preset that cure time is 130s ~ 720s, curing temperature be 150 DEG C ~ 200 DEG C and sulfide stress is 5MPa ~ 25 MPa; Afterwards, mould matched moulds is carried out preheating, preheat temperature is the preset temperature of vulcanizer, and preheating time is 50min ~ 4h;
Step 2: place skeleton 10, rubber mass 13 and spring 11; After mold temperature is constant, by upper and lower for mould mould separately, skeleton 10 is placed on the notch cuttype sidewall of lower module 3; Rubber mass 13 is placed on the upper surface of skeleton 10; Spring 11 being curved annular is placed in described annular groove, matched moulds afterwards;
Step 3: sulfidization molding; Mould after step 2 matched moulds is put into described vulcanizer, start vulcanizer, the sulfide stress preset by vulcanizer and temperature are to mould pressurizing and heating, rubber mass 13 melts and to flow in described reinforced chamber under pressure from top to bottom (when flowing through spring 11 position, the inner circumferential sidewall 13 of annular groove effectively can stop spring 11 by punching distortion), the gas produced in sulfidization molding process is discharged by described exhaust passage 14; Reach when cured vulcanizer preset cure time time, sulfidization molding terminates;
Rubber mass 13 produces crosslinkable rubber macromolecule free radical at high temperature under high pressure, crosslinkable free radical and rubber molecular chain produce and react, generate cross-bond, continuous shortization of cross-bond, reset, and react with skeleton 10 surface adhesive and bond together, rubber molecule finally forms stable spacial framework, realizes the shaping of product;
Step 4: die sinking; In obtaining after sulfidization molding, bag spring-loaded oil seal is attached in the lower impressions 3-3 of core piece 3 after departing from reinforced chamber, and move upward with patrix, patrix separates with counterdie;
Step 5: the demoulding; Core piece 3 is together sunk with interior bag spring-loaded oil seal under ejector component 9 acts on, and takes off interior bag spring-loaded oil seal.
Detailed description of the invention five: the method for bag spring-loaded oil seal in bag spring-loaded oil seal mould molding in the utilization described in detailed description of the invention four, in step 2, before again skeleton 10 being placed on the notch cuttype sidewall of lower module 3, first phosphorating treatment is carried out to skeleton 10 surface, afterwards, carry out brushing surface bonding agent and drying and processing (when being convenient to sulfuration, rubber mass 13 is bonding with skeleton 10).Bonding agent is fluorine unpigmented rubber adhesive; Bake out temperature is 90 DEG C ~ 200 DEG C, and drying time is 20min ~ 1h.
Phosphorization treatment process is existing technique.
Detailed description of the invention six: the method for bag spring-loaded oil seal in bag spring-loaded oil seal mould molding in the utilization described in detailed description of the invention four or five, in step one: the cure time preset is 140s, curing temperature is 150 DEG C; The sulfide stress preset is 5MPa; The preheating time of mould matched moulds is 50min.This scheme is applicable to mould outer sidewall diameter and is 40 ~ 90mmm, is highly the mould of 70 ~ 80mm.
Detailed description of the invention seven: the method for bag spring-loaded oil seal in bag spring-loaded oil seal mould molding in the utilization described in detailed description of the invention four or five, in step one: the cure time preset is 720s, curing temperature is 200 DEG C; The sulfide stress preset is 25MPa; The preheating time of mould matched moulds is 3h.It is 200 ~ 300mmm that this scheme is applicable to mould lateral wall external diameter, is highly the mould of 80 ~ 140mm.
Detailed description of the invention eight: the method for bag spring-loaded oil seal in bag spring-loaded oil seal mould molding in the utilization described in detailed description of the invention four or five, in step one: the cure time preset is 420s, curing temperature is 180 DEG C; The sulfide stress preset is 9MPa; The preheating time of mould matched moulds is 3h.It is 90 ~ 200mmm that this scheme is applicable to mould lateral wall external diameter, is highly the mould of 60 ~ 70mm.
Vulcanizer is prior art, and be outsourcing device, model is selected as required.
Claims (3)
1. a bag spring-loaded oil seal mould in, described interior bag spring-loaded oil seal mould comprises upper die and lower die, and described patrix comprises upper mould piece (1), core piece (3), jump ring I (7), jump ring II (8) and mould bases plate I (4); Described counterdie comprises lower module (3), jump ring III (6) and mould bases plate III (5);
Described upper mould piece (1) and lower module (3) are oppositely arranged up and down, and described jump ring I (7) one end is connected with mould bases plate I (4), the other end is connected with upper mould piece (1); Described jump ring II (8) one end is connected with core piece (3), the other end is connected with upper mould piece (1); Described core piece (3) is arranged in the center cavity of upper mould piece (1), and the outer peripheral sidewall of core piece (3) is provided with a upper mounting plate (3-1), and the center cavity inner circumferential sidewall of upper mould piece (1) is provided with lower platform (1-1); The bottom of upper mould piece (1) is provided with positioning boss (1-3) under notch cuttype, the bottom of core piece (3) is provided with lower impressions (3-3) near outer end, the entity part between the outer peripheral sidewall of core piece (3) and described lower impressions (3-3) holds (3-3) for compressing; Described lower module (3) upper surface is provided with notch cuttype upper impression I (3-1) and notch cuttype upper impression II (3-3), transition projection (3-3) is provided with between notch cuttype upper impression I (3-1) and notch cuttype upper impression II (3-3), the sidewall that notch cuttype upper impression I (3-1) is adjacent with notch cuttype upper impression II (3-3) is notch cuttype sidewall, and described notch cuttype sidewall is for placing skeleton (10); The root of the sidewall that notch cuttype upper impression II (3-3) is adjacent with notch cuttype upper impression I (3-1) is provided with one for holding the annular groove of spring (11);
It is characterized in that: the groove depth of described annular groove is 1/3 ~ 1/3 of spring (11) external diameter; After mould matched moulds, the lower platform (1-1) of upper mould piece (1) and the upper mounting plate (3-1) of core piece (3) are fitted, the compression end (3-3) of core piece (3) is pressed on skeleton (10) upper surface, under the notch cuttype of upper mould piece (1), positioning boss (1-3) is arranged in the notch cuttype upper impression I (3-1) of lower module (3), the lower end of core piece (3) is arranged in the notch cuttype upper impression II (3-3) of lower module (3), and described transition projection (3-3) is arranged in the lower impressions (3-3) of core piece (3); By the lower impressions (3-3) of positioning boss (1-3), core piece (3) under the notch cuttype of upper mould piece (1) and form a reinforced chamber between the notch cuttype upper impression I (3-1) of lower module (3) and notch cuttype upper impression II (3-3); Skeleton (10) and spring (11) are all arranged in described reinforced chamber; The space formed between lower module (4) and core piece (3) is exhaust passage (14).
2. utilize a method for bag spring-loaded oil seal in the interior bag spring-loaded oil seal mould molding described in claim 1, it is characterized in that: described method comprises the steps:
Step one: the mould described in preheating; On vulcanizer, first preset that cure time is 130s ~ 720s, curing temperature be 150 DEG C ~ 200 DEG C and sulfide stress is 5MPa ~ 25 MPa; Afterwards, mould matched moulds is carried out preheating, preheat temperature is the preset temperature of vulcanizer, and preheating time is 50min ~ 4h;
Step 2: place skeleton (10), rubber mass (13) and spring (11); After mold temperature is constant, by upper and lower for mould mould separately, skeleton (10) is placed on the notch cuttype sidewall of lower module (3); Rubber mass (13) is placed on the upper surface of skeleton (10); Spring (11) is curved annular to be placed in described annular groove, matched moulds afterwards;
Step 3: sulfidization molding; Mould after step 2 matched moulds is put into described vulcanizer, start vulcanizer, the sulfide stress preset by vulcanizer and temperature are to mould pressurizing and heating, rubber mass (13) melts and flows in described reinforced chamber under pressure from top to bottom, and the gas produced in sulfidization molding process is discharged by described exhaust passage (14); Reach when cured vulcanizer preset cure time time, sulfidization molding terminates;
Step 4: die sinking; In obtaining after sulfidization molding, bag spring-loaded oil seal is attached in the lower impressions (3-3) of core piece (3) after departing from reinforced chamber, and move upward with patrix, patrix separates with counterdie;
Step 5: the demoulding; Core piece (3) is together sunk with interior bag spring-loaded oil seal under ejector component (9) effect, takes off interior bag spring-loaded oil seal.
3. the method for bag spring-loaded oil seal in bag spring-loaded oil seal mould molding in utilization according to claim 2, it is characterized in that: in step 2, before again skeleton (10) being placed on the notch cuttype sidewall of lower module (3), first phosphorating treatment is carried out to skeleton (10) surface, afterwards, brushing surface bonding agent and drying and processing is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510059503.0A CN104626407A (en) | 2015-02-05 | 2015-02-05 | Inner wrapped spring-loaded oil seal mould and method for moulding inner wrapped spring-loaded oil seal by utilizing same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510059503.0A CN104626407A (en) | 2015-02-05 | 2015-02-05 | Inner wrapped spring-loaded oil seal mould and method for moulding inner wrapped spring-loaded oil seal by utilizing same |
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| CN104626407A true CN104626407A (en) | 2015-05-20 |
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| CN201510059503.0A Pending CN104626407A (en) | 2015-02-05 | 2015-02-05 | Inner wrapped spring-loaded oil seal mould and method for moulding inner wrapped spring-loaded oil seal by utilizing same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106182504A (en) * | 2016-09-22 | 2016-12-07 | 成都盛帮特种橡胶制品有限公司 | A kind of encapsulated spring-loaded oil seal mould structure and production technology |
| CN110587997A (en) * | 2019-03-07 | 2019-12-20 | 天津海格丽特智能科技股份有限公司 | Sealing strip corner thermoforming device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH02240460A (en) * | 1989-03-13 | 1990-09-25 | Nok Corp | Insert molded product and molding method thereof |
| CN1162708A (en) * | 1996-03-08 | 1997-10-22 | Skf美国公司 | Improved seal with embedded garter spring |
| CN102101333A (en) * | 2010-12-17 | 2011-06-22 | 哈尔滨东安实业发展有限公司 | Preparation method of die device of double-skeleton spark plug guide rod oil seal |
| CN202318680U (en) * | 2011-10-27 | 2012-07-11 | 揭阳市天诚密封件有限公司 | Multifunctional hub oil seal vulcanizing mould |
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2015
- 2015-02-05 CN CN201510059503.0A patent/CN104626407A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02240460A (en) * | 1989-03-13 | 1990-09-25 | Nok Corp | Insert molded product and molding method thereof |
| CN1162708A (en) * | 1996-03-08 | 1997-10-22 | Skf美国公司 | Improved seal with embedded garter spring |
| CN102101333A (en) * | 2010-12-17 | 2011-06-22 | 哈尔滨东安实业发展有限公司 | Preparation method of die device of double-skeleton spark plug guide rod oil seal |
| CN202318680U (en) * | 2011-10-27 | 2012-07-11 | 揭阳市天诚密封件有限公司 | Multifunctional hub oil seal vulcanizing mould |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106182504A (en) * | 2016-09-22 | 2016-12-07 | 成都盛帮特种橡胶制品有限公司 | A kind of encapsulated spring-loaded oil seal mould structure and production technology |
| CN110587997A (en) * | 2019-03-07 | 2019-12-20 | 天津海格丽特智能科技股份有限公司 | Sealing strip corner thermoforming device |
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Application publication date: 20150520 |