CN108061159A - The sealing diaphragm and its manufacturing technique method of fuel pump - Google Patents
The sealing diaphragm and its manufacturing technique method of fuel pump Download PDFInfo
- Publication number
- CN108061159A CN108061159A CN201810060208.0A CN201810060208A CN108061159A CN 108061159 A CN108061159 A CN 108061159A CN 201810060208 A CN201810060208 A CN 201810060208A CN 108061159 A CN108061159 A CN 108061159A
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- elastic
- strengthening layer
- layer
- sealed body
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- 238000007789 sealing Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 239000000446 fuel Substances 0.000 title claims abstract description 23
- 238000005728 strengthening Methods 0.000 claims abstract description 83
- 238000009434 installation Methods 0.000 claims abstract description 31
- 239000000565 sealant Substances 0.000 claims abstract description 31
- 230000003014 reinforcing effect Effects 0.000 claims description 26
- 239000004744 fabric Substances 0.000 claims description 13
- 239000000084 colloidal system Substances 0.000 claims description 10
- 239000011265 semifinished product Substances 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000295 fuel oil Substances 0.000 abstract description 21
- 230000035699 permeability Effects 0.000 abstract description 11
- 239000010410 layer Substances 0.000 description 100
- 238000001727 in vivo Methods 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 206010015866 Extravasation Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000036251 extravasation Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000010761 intermediate fuel oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/108—Special methods for making a non-metallic packing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses the sealing diaphragms and its manufacturing technique method of a kind of fuel pump, the sealing diaphragm includes elastic sealed body and strengthening layer, the elastic sealed body includes the pressure-bearing surface being oppositely arranged and compresses face, the elastic sealed body is equipped with through the pressure-bearing surface and the installation through-hole for compressing face setting, and the strengthening layer is located in the pressure-bearing surface and described compresses between face；It is equipped between the madial wall of the strengthening layer and the installation through-hole between the first sealant and/or the lateral wall of the strengthening layer and the elastic sealed body and is equipped with the second sealant.The sealing diaphragm can effectively avoid fuel oil from contacting directly with strengthening layer and cause permeability phenomenon, improve the reliability of fuel pump and the vehicle that rubs.
Description
Technical field
The present invention relates to fuel pump technical field of sealing technology, sealing diaphragm and its production work more particularly to a kind of fuel pump
Process.
Background technology
The sealing diaphragm that the sealing structure of fuel pump need to often be used at present, the sealing diaphragm are to improve intensity and durability,
Base fabric structure generally can be increased in elastic layer interlayer.
The through hole passed through for support column is offered in the middle part of the fuel pump sealing diaphragm of transmission, and with fixed plate fixing seal
Diaphragm, this structure have the following problems：If support column and the control of fixed plate fit precision are bad, between support column and fixed plate just
Gap can be generated, the in vivo fuel oil of chamber will be contacted by the base fabric in gap and diaphragm interlayer, and base fabric does not have sealing and makees
With fuel oil will be penetrated by base fabric outside cavity, cause permeability phenomenon；It penetrates into simultaneously in base fabric when fuel oil, rubber can be made
Piece and the cementability of base fabric decline, resistance to that sheet rubber may long afterwards with base fabric removed and causes sheet rubber damaged.
The content of the invention
Based on this, it is necessary to provide the sealing diaphragm and its manufacturing technique method of a kind of fuel pump, which can
Fuel oil is effectively avoided to contact directly with strengthening layer and cause permeability phenomenon, improves the reliability of fuel pump and the vehicle that rubs.
Its technical solution is as follows：
On the one hand, a kind of sealing diaphragm of fuel pump is provided in the present embodiment, including elastic sealed body and strengthening layer, institute
Stating elastic sealed body includes the pressure-bearing surface being oppositely arranged and compresses face, and the elastic sealed body is equipped with through the pressure-bearing surface and institute
State the installation through-hole for compressing face setting, the strengthening layer is located in the pressure-bearing surface and described compresses between face；The strengthening layer
Madial wall and the installation through-hole madial wall between be equipped with lateral wall and the institute of the first sealant and/or the strengthening layer
It states and the second sealant is equipped between the lateral wall of elastic sealed body.
When above-mentioned sealing diaphragm is applied in fuel pump, the sealing diaphragm is fixedly arranged on the branch by the installation through-hole
On the dagger and face that compresses offsets with the support column, and the fixed plate is interference fitted with the support column and the fixation
Plate offsets with the pressure-bearing surface；Simultaneously by setting the first sealant and/or the second sealant, even if support column and fixed plate are matched somebody with somebody
It is bad to close precision controlling, gap will be generated between support column and fixed plate, the in vivo fuel oil of chamber will not be past by strengthening layer
Outer permeability.Specifically, the first sealant is arranged on to the madial wall (strengthening layer is equipped with through hole at this time) and installation through-hole of strengthening layer
Madial wall between, fuel oil can also be avoided to penetrate into strengthening layer, make the cementability between elastic sealed body and strengthening layer
Decline, and then the service life of sealing diaphragm can be improved.
Technical solution is illustrated further below：
In one of the embodiments, the elastic sealed body is elastic rubbery body, and the strengthening layer is base cloth layer.It is convenient for
Manufacture reduces production cost
In one of the embodiments, first sealant is for the first sealed colloid and/or second sealant
Second sealed colloid.And then using the first sealed colloid or and the second sealed colloid can not only prevent fuel oil from exosmosing, but also can make
Enhance the bonding strength of elastic sealed body for connector (during manufacture, can be with elastic packing body by integral forming), improve diaphragm seal
The service life of piece.
In one of the embodiments, the strengthening layer is equipped with multiple outwardly raised and/or multiple set to the concave
Recess portion.It and then can be by the way that multiple protrusions or recess portions be set to expand the external surface area of strengthening layer, and then in limited size
In the range of, increase the contact area of strengthening layer and elastic sealed body, make strengthening layer bonding with elastic sealing layer more firm.
In one of the embodiments, the face that compresses is equipped with the annular groove to be formed that sets to the concave.
In one of the embodiments, the installation through-hole includes first through hole and the second through hole, and the first through hole is leaned on
The nearly pressure-bearing surface is set, and second through hole compresses face setting close to described, and the diameter of the first through hole is less than described the
The diameter of two through holes.
In one of the embodiments, the end of the madial wall of second through hole is equipped with introduction part.And then it is led using this
Enter portion, installation is imported on the support columns convenient for sealing diaphragm.
On the other hand, the present embodiment additionally provides a kind of manufacturing technique method for sealing diaphragm, includes the following steps：
(1) the first elastic layer is arranged at the first predeterminated position；
(2) it is punched by preset requirement to strengthening base, and the reinforcing base after punching is fixedly arranged on first bullet
The second predeterminated position on property layer；
(3) the second elastic layer is fixedly arranged in the reinforcing base, and carries out bonding vulcanizing treatment and obtain diaphragm semi-finished product；
(4) blanking process is carried out to the diaphragm semi-finished product according to diaphragm size requirement, makes first elastic layer and institute
It states and elastic sealed body is formed between the second elastic layer, and the elastic sealed body is equipped with installation through-hole, makes reinforcing base shape
Into strengthening layer and it is located in the elastic packing body；And the madial wall of the madial wall of the strengthening layer and the installation through-hole
Between formed between the lateral wall of the first sealant and/or the strengthening layer and the lateral wall of the elastic sealed body and form
Two sealants.
And then above-mentioned manufacturing technique method is utilized, it can be wanted according to the size and structure of the sealing diaphragm of required production
It asks, is punched to strengthening base, while the reinforcing base after punching can be arranged on the first elastic layer, cover second
Elastic layer, you can carry out bonding vulcanizing treatment, the first elastic layer, reinforcing base and the second elastic layer is made to be bonded to form a piece of diaphragm
Then semi-finished product carry out blanking process to diaphragm semi-finished product, you can obtain sealing diaphragm.Above-mentioned manufacturing technique method realizes
The manufacturing of sealing diaphragm is stated, when the sealing diaphragm is applied in fuel pump, even if support column and fixed plate cooperation essence
Degree control is bad, and gap will be generated between support column and fixed plate, and the in vivo fuel oil of chamber will not pass through the past extravasation of strengthening layer
Oil；And then fuel oil can effectively be avoided to contact directly with strengthening layer and cause permeability phenomenon, improve the service life of sealing diaphragm.
Technical solution is illustrated further below：
In one of the embodiments, in step (2), punching is carried out including such as lower section to strengthening base by preset requirement
Method：Multiple through holes are punched out in the reinforcing base according to default spacing, the aperture of the through hole is more than the installation and leads to
The diameter in hole；Or multiple strengthening layers are punched out in the reinforcing base, the outer diameter of the strengthening layer is less than the elastic packing
The outer diameter of body；Or multiple strengthening layers in circular ring structure are punched out in the reinforcing base, the endoporus of the strengthening layer is big
In the internal diameter of the mounting hole, the outer diameter of the strengthening layer is less than the outer diameter of the elastic sealed body.It and then can be a piece of strong
Change and be punched out or preset multiple strengthening layers in base, convenient for obtaining multiple sealing diaphragms in one-pass molding, improve sealing diaphragm
Production efficiency.
In one of the embodiments, before step (1), further include：The mold core equipped with multiple shaping mold cavities is made, it will
Sizing material is injected by certain pressure in the shaping mold cavity, and multiple first elastic layers are formed after curing.It and then can be right
First elastic layer is produced in batches, and one-pass molding is multiple, convenient for improving production efficiency.
Description of the drawings
Fig. 1 is the half-section diagram that diaphragm is sealed in an embodiment；
Fig. 2 is the half-section diagram that diaphragm is sealed in another embodiment；
Fig. 3 is the half-section diagram that diaphragm is sealed in another embodiment；
Fig. 4 is the partial schematic sectional view of embodiment intermediate fuel oil pump；
Fig. 5 is the production process schematic diagram that diaphragm manufacturing technique method is sealed in an embodiment.
Reference sign：
100th, diaphragm is sealed, 110, elastic sealed body, 111, pressure-bearing surface, 112, compress face, 113, installation through-hole, 102, the
One through hole, the 104, second through hole, 106, introduction part, the 114, first sealant, the 115, second sealant, 116, annular groove,
120th, strengthening layer, 200, support column, 300, fixed plate, 10, mold core, 12, shaping mold cavity, 20, strengthen base, 22, through hole, 30,
Second elastic layer.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, below in conjunction with attached drawing and specific embodiment party
Formula, the present invention is further described in detail.It should be appreciated that the specific embodiments described herein are only solving
The present invention is released, does not limit protection scope of the present invention.
It should be noted that when element is referred to as " being fixed on ", " being fixedly arranged on " another element, it can be directly another
On a element or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be
It is directly connected to another element or may be simultaneously present centering elements.Term as used herein " vertically ", " level
", "left", "right" and similar statement for illustrative purposes only, it is unique embodiment to be not offered as.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more
The arbitrary and all combination of relevant Listed Items.
Heretofore described " first ", " second " do not represent specific quantity and order, are only used for the differentiation of title.
As shown in Figure 1, in one embodiment of the invention, which includes elastic sealed body 110 and strengthening layer
120, elastic sealed body 110 includes the pressure-bearing surface 111 being oppositely arranged and compresses face 112, and elastic sealed body 110 is equipped with through pressure-bearing
Face 111 and the installation through-hole 113 for compressing the setting of face 112, strengthening layer 120 are located in pressure-bearing surface 111 and compress between face 112；By force
Change 120 madial wall of layer (strengthening layer is equipped with through hole at this time) and the first sealant 114 is equipped between the madial wall of installation through-hole 113.
When above-mentioned sealing diaphragm 100 is applied in fuel pump, sealing diaphragm 100 is fixedly arranged on support by installation through-hole 113
On column 200 and compress face 112 and offset with support column 200, fixed plate 300 be interference fitted with support column 200 and fixed plate 300 with
Pressure-bearing surface 111 offsets；Simultaneously by setting the first sealant 114, even if support column 200 and the control of 300 fit precision of fixed plate
It is bad, gap will be generated between support column 200 and fixed plate 300, fuel oil can also be avoided to be contacted with strengthening layer 120, prevented
The in vivo fuel oil of chamber passes through the permeability outward of strengthening layer 120；Also fuel oil is avoided to penetrate into base fabric simultaneously, make elastic sealed body 110
Cementability between strengthening layer 120 declines, and then can improve the service life of sealing diaphragm 100.
As shown in Fig. 2, in another embodiment of the present invention, which includes elastic sealed body 110 and strengthens
Layer 120, elastic sealed body 110 include the pressure-bearing surface 111 being oppositely arranged and compress face 112, and elastic sealed body 110 is equipped with to run through and hold
Pressure surface 111 and the installation through-hole 113 for compressing the setting of face 112, strengthening layer 120 are located in pressure-bearing surface 111 and compress between face 112；
The second sealant 115 is equipped between the lateral wall of strengthening layer 120 and the lateral wall of elastic sealed body 110.
When above-mentioned sealing diaphragm 100 is applied in fuel pump, sealing diaphragm 100 is fixedly arranged on support by installation through-hole 113
On column 200 and compress face 112 and offset with support column 200, fixed plate 300 be interference fitted with support column 200 and fixed plate 300 with
Pressure-bearing surface 111 offsets；Simultaneously by setting the second sealant 115, even if support column 200 and the control of 300 fit precision of fixed plate
It is bad, gap will be generated between support column 200 and fixed plate 300, the in vivo fuel oil of chamber will not be by strengthening layer 120 outward
Permeability.
As shown in figure 3, in the another embodiment of the present invention, the sealing diaphragm 100 is including elastic sealed body 110 and by force
Change layer 120, elastic sealed body 110 includes the pressure-bearing surface 111 being oppositely arranged and compresses face 112, and elastic sealed body 110, which is equipped with, to be run through
Pressure-bearing surface 111 and compress face 112 setting installation through-hole 113, strengthening layer 120 be located in pressure-bearing surface 111 and compress face 112 it
Between；120 madial wall of strengthening layer (strengthening layer is equipped with through hole at this time) is equipped with the first sealant between the madial wall of installation through-hole 113
114, and the second sealant 115 is equipped between the lateral wall of strengthening layer 120 and elastic sealed body 110.
When above-mentioned sealing diaphragm 100 is applied in fuel pump, sealing diaphragm 100 is fixedly arranged on support by installation through-hole 113
On column 200 and compress face 112 and offset with support column 200, fixed plate 300 be interference fitted with support column 200 and fixed plate 300 with
Pressure-bearing surface 111 offsets；Simultaneously by setting the first sealant 114 and the second sealant 115, even if support column 200 and fixed plate
The control of 300 fit precision is bad, gap will be generated between support column 200 and fixed plate 300, the in vivo fuel oil of chamber will not lead to
Cross the permeability outward of strengthening layer 120；First sealant 114 setting simultaneously can also avoid fuel oil from penetrating into strengthening layer, make bullet
Property seal 110 and strengthening layer 120 between cementability decline, and then can improve sealing diaphragm 100 service life.
On the basis of any of the above-described embodiment, elastic sealed body 110 is elastic rubbery body, and strengthening layer 120 is base cloth layer；
Convenient for manufacture, production cost is reduced.Further, the first sealant 114 is the first sealed colloid and/or the second sealant 115
For the second sealed colloid.And then using the first sealed colloid or and the second sealed colloid can not only prevent fuel oil from exosmosing, but also can be with
As the bonding strength of connector (during manufacture, can be with elastic packing body by integral forming) enhancing elastic sealed body 110, improve close
The service life of sealer piece 100.
In one embodiment, strengthening layer 120 be equipped with it is multiple it is outwardly it is raised and/or multiple set to the concave it is recessed
Portion；It and then can be by the way that multiple protrusions or recess portions be set to expand the external surface area of strengthening layer 120, and then in limited size model
In enclosing, increase the contact area of strengthening layer 120 and elastic sealed body 110, make strengthening layer 120 bonding with elastic sealing layer more
It is firm.
In another embodiment, the outer surface of strengthening layer 120 is equipped with multiple overhead structures.And then by setting barb knot
Structure even if fuel oil is penetrated into strengthening layer 120, can also be such that strengthening layer 120 is connected with elastic sealed body 110 reliably, be not easy to take off
From.
On the basis of any of the above-described embodiment, compress face 112 and be equipped with the annular groove 116 to be formed that sets to the concave.
On the basis of any of the above-described embodiment, installation through-hole 113 include 102 and second through hole 104 of first through hole, first
Through hole 102 is set close to pressure-bearing surface 111, and the second through hole 104 is set close to compressing face 112, and the diameter of first through hole 102 is less than the
The diameter of two through holes 104；And then coordinate convenient for being installed with support column 200, it forms stepped hole cooperation and combines, fuel oil can be reduced and oozed
Enter rate.Further, the end of the madial wall of the second through hole 104 is equipped with introduction part 106.And then the introduction part 106 is utilized, it is convenient for
Diaphragm 100 is sealed to import on support column 200.
As shown in figure 4, the present embodiment additionally provides a kind of fuel pump, including above-mentioned sealing diaphragm 100, support is further included
Column 200 and fixed plate 300, sealing diaphragm 100 are fixedly arranged on support column 200 by installation through-hole 113 and compress face 112 and branch
Dagger 200 offsets, and fixed plate 300 is interference fitted with support column 200 and fixed plate 300 offsets with pressure-bearing surface 111.
The fuel pump make use of above-mentioned sealing diaphragm 100, can effectively reduce permeability phenomenon, improve the work of fuel pump
Performance and reliability.
The present embodiment additionally provides a kind of motorcycle, including above-mentioned fuel pump.The motorcycle employs above-mentioned fuel pump, into
One step improves the reliability of motorcycle, reduces the failure rate of motorcycle.
In addition, as shown in figure 5, additionally provided in another embodiment it is a kind of seal diaphragm manufacturing technique method, including
Following steps：
(1) the first elastic layer is arranged at the first predeterminated position；
(2) it is punched by preset requirement to strengthening base 20, and the reinforcing base 20 after punching is fixedly arranged on described the
The second predeterminated position on posterior limiting；
(3) the second elastic layer 30 is fixedly arranged in the reinforcing base 20, and carries out bonding vulcanizing treatment and obtain diaphragm half
Finished product；
(4) blanking process is carried out to the diaphragm semi-finished product according to diaphragm size requirement, makes first elastic layer and institute
It states and elastic sealed body is formed between the second elastic layer 30, and the elastic sealed body is equipped with installation through-hole, makes the reinforcing base
20 formation strengthening layers are simultaneously located in the elastic packing body；And the madial wall of the strengthening layer and the installation through-hole is interior
Shape between the lateral wall of the first sealant and/or the strengthening layer and the lateral wall of the elastic sealed body is formed between side wall
Into the second sealant.
And then above-mentioned manufacturing technique method is utilized, it can be wanted according to the size and structure of the sealing diaphragm of required production
It asks, is punched to strengthening base 20, while the reinforcing base 20 after punching can be arranged on the first elastic layer, covered
Second elastic layer 30, you can carry out bonding vulcanizing treatment, make the first elastic layer, strengthen base's 20 and second elastic layer 30 bonding shape
Into a piece of diaphragm semi-finished product, blanking process then is carried out to diaphragm semi-finished product, you can obtain sealing diaphragm.Above-mentioned production technology side
Method realizes the manufacturing of above-mentioned sealing diaphragm, when the sealing diaphragm is applied in fuel pump, even if support column and solid
The control of fixed board fit precision is bad, gap will be generated between support column and fixed plate, the in vivo fuel oil of chamber will not be by strong
Change layer permeability outward；And then fuel oil can effectively be avoided to contact directly with strengthening layer and cause permeability phenomenon, improve sealing diaphragm
Service life.
Specifically, before step (1), further include：The mold core 10 equipped with multiple shaping mold cavities 12 is made, sizing material is passed through
Certain pressure is injected into the shaping mold cavity 12, and multiple first elastic layers are formed after curing.It and then can be to the first bullet
Property layer produced in batches, one-pass molding is multiple, convenient for improve production efficiency.Further, in step (2), by default
It is required that carrying out punching to reinforcing base 20 includes following method：According to default spacing it is described reinforcing base 20 on be punched out it is more
A through hole, the aperture of the through hole are more than the diameter (as shown in Figure 5) of the installation through-hole；Or it is rushed in the reinforcing base 20
Multiple strengthening layers are determined, the outer diameter of the strengthening layer is less than the outer diameter of the elastic sealed body；Or in the reinforcing base 20
On be punched out multiple strengthening layers in circular ring structure, the endoporus of the strengthening layer is more than the internal diameter of the mounting hole, the reinforcing
The outer diameter of layer is less than the outer diameter of the elastic sealed body.And then it can be punched out or preset in a piece of reinforcing base 20 and is multiple strong
Change layer, convenient for obtaining multiple sealing diaphragms in one-pass molding, improve the production efficiency of sealing diaphragm.
In addition, the reinforcing base 20 is base cloth layer, and pre-fixed by way of bonding in the first elastic layer and the second bullet
Between property layer 30；Further, distinguish brush coating water in two bonding planes of Primary layer, be then placed on first layer rubber, this
When base cloth layer through hole or periphery wall will be with shaping mold cavity 12 to just and concentric；Further, bonding vulcanizing treatment is carried out
When, first elastic layer and the second elastic layer 30 are heated and mutually melt to form an elastomer, and are rushed respectively in the correspondence position of elastomer
Determine the elastic sealed body to form multiple annular shapes.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that come for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of sealing diaphragm of fuel pump, which is characterized in that including elastic sealed body and strengthening layer, the elastic sealed body
Including the pressure-bearing surface being oppositely arranged and face is compressed, the elastic sealed body is equipped with to be set through the pressure-bearing surface and the face that compresses
Installation through-hole, the strengthening layer is located in the pressure-bearing surface and described compresses between face；The madial wall of the strengthening layer and institute
State the lateral wall between the madial wall of installation through-hole equipped with the first sealant and/or the strengthening layer and the elastic sealed body
Lateral wall between be equipped with the second sealant.
2. sealing diaphragm according to claim 1, which is characterized in that the elastic sealed body is elastic rubbery body, described
Strengthening layer is base cloth layer.
3. sealing diaphragm according to claim 2, which is characterized in that first sealant for the first sealed colloid or/
And second sealant is the second sealed colloid.
4. sealing diaphragm according to claim 1, which is characterized in that the strengthening layer is equipped with multiple outwardly protrusions
And/or multiple recess portions to set to the concave.
5. sealing diaphragm according to claim 1, which is characterized in that the face that compresses is equipped with the annular to be formed that sets to the concave
Groove.
6. sealing diaphragm according to any one of claims 1 to 5, which is characterized in that it is logical that the installation through-hole includes first
Hole and the second through hole, the first through hole are set close to the pressure-bearing surface, and second through hole compresses face setting, institute close to described
The diameter for stating first through hole is less than the diameter of second through hole.
7. sealing diaphragm according to claim 7, which is characterized in that the end of the madial wall of second through hole is equipped with and leads
Enter portion.
8. a kind of manufacturing technique method for sealing diaphragm, which is characterized in that include the following steps：
(1) the first elastic layer is arranged at the first predeterminated position；
(2) it is punched by preset requirement to strengthening base, and the reinforcing base after punching is fixedly arranged on first elastic layer
On the second predeterminated position；
(3) the second elastic layer is fixedly arranged in the reinforcing base, and carries out bonding vulcanizing treatment and obtain diaphragm semi-finished product；
(4) blanking process is carried out to the diaphragm semi-finished product according to diaphragm size requirement, makes first elastic layer and described the
Elastic sealed body is formed between two elastic layers, and the elastic sealed body is equipped with installation through-hole, and the reinforcing base is made to be formed by force
Change layer and be located in the elastic packing body；And between the madial wall of the madial wall of the strengthening layer and the installation through-hole
It is close to form formation second between the lateral wall of the first sealant and/or the strengthening layer and the lateral wall of the elastic sealed body
Sealing.
9. the manufacturing technique method of sealing diaphragm according to claim 8, which is characterized in that in step (2), by default
It is required that carrying out punching to reinforcing base includes following method：According to default spacing multiple lead to is punched out in the reinforcing base
Hole, the aperture of the through hole are more than the diameter of the installation through-hole；Or it is punched out multiple strengthening layers, institute in the reinforcing base
The outer diameter for stating strengthening layer is less than the outer diameter of the elastic sealed body；Or it is punched out in the reinforcing base multiple in annulus knot
The strengthening layer of structure, the endoporus of the strengthening layer are more than the internal diameter of the mounting hole, and the outer diameter of the strengthening layer is less than the elasticity
The outer diameter of seal.
10. the manufacturing technique method of sealing diaphragm according to claim 8 or claim 9, which is characterized in that before step (1),
It further includes：The mold core equipped with multiple shaping mold cavities is made, sizing material is injected by certain pressure in the shaping mold cavity, is cured
After form multiple first elastic layers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810060208.0A CN108061159A (en) | 2018-01-22 | 2018-01-22 | The sealing diaphragm and its manufacturing technique method of fuel pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810060208.0A CN108061159A (en) | 2018-01-22 | 2018-01-22 | The sealing diaphragm and its manufacturing technique method of fuel pump |
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| Publication Number | Publication Date |
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| CN108061159A true CN108061159A (en) | 2018-05-22 |
Family
ID=62141853
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810060208.0A Pending CN108061159A (en) | 2018-01-22 | 2018-01-22 | The sealing diaphragm and its manufacturing technique method of fuel pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070750A (en) * | 2019-11-22 | 2020-04-28 | 广州机械科学研究院有限公司 | Production method of combined sealing element |
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| GB317534A (en) * | 1928-10-30 | 1929-08-22 | Harold William Hughes | Improvements relating to rubber valves, diaphragms, washers and the like |
| CN1126281A (en) * | 1995-01-06 | 1996-07-10 | Yts株式会社 | Diaphragm assembly and method of manufacturing same |
| JP2002343206A (en) * | 2001-05-17 | 2002-11-29 | Tokai Rika Co Ltd | Diaphragm for pressure switch or the like |
| JP2003130219A (en) * | 2001-10-29 | 2003-05-08 | Fujikura Rubber Ltd | Manufacturing method for diaphragm |
| JP2006161831A (en) * | 2004-12-02 | 2006-06-22 | Toyo Tire & Rubber Co Ltd | Diaphragm and its manufacturing method |
| CN201358906Y (en) * | 2009-02-23 | 2009-12-09 | 李建玮 | Diaphragm sheet of pneumatic diaphragm pump |
| CN208041125U (en) * | 2018-01-22 | 2018-11-02 | 江门市大长江集团有限公司 | Motorcycle, fuel pump and its sealing diaphragm |
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| GB317534A (en) * | 1928-10-30 | 1929-08-22 | Harold William Hughes | Improvements relating to rubber valves, diaphragms, washers and the like |
| CN1126281A (en) * | 1995-01-06 | 1996-07-10 | Yts株式会社 | Diaphragm assembly and method of manufacturing same |
| JP2002343206A (en) * | 2001-05-17 | 2002-11-29 | Tokai Rika Co Ltd | Diaphragm for pressure switch or the like |
| JP2003130219A (en) * | 2001-10-29 | 2003-05-08 | Fujikura Rubber Ltd | Manufacturing method for diaphragm |
| JP2006161831A (en) * | 2004-12-02 | 2006-06-22 | Toyo Tire & Rubber Co Ltd | Diaphragm and its manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111070750A (en) * | 2019-11-22 | 2020-04-28 | 广州机械科学研究院有限公司 | Production method of combined sealing element |
| CN111070750B (en) * | 2019-11-22 | 2022-04-22 | 广州机械科学研究院有限公司 | Production method of combined sealing element |
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