CN204076602U - Air chamber rubber diaphragm post-cure mould and module thereof - Google Patents
Air chamber rubber diaphragm post-cure mould and module thereof Download PDFInfo
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- CN204076602U CN204076602U CN201420472929.XU CN201420472929U CN204076602U CN 204076602 U CN204076602 U CN 204076602U CN 201420472929 U CN201420472929 U CN 201420472929U CN 204076602 U CN204076602 U CN 204076602U
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Abstract
The utility model discloses air chamber rubber diaphragm post-cure mould and module thereof, mould comprises patrix, middle mould and counterdie, wherein, described patrix is arranged on cope match-plate pattern, described counterdie is arranged on lower bolster, described middle mould is arranged on and can spins upside down in middle template, middle mould is by the first core rod of surface texturing process, form with the second core rod, described first core rod and described second core rod are placed in the upper of middle template, lower surface, the first die cavity being used for a sulfuration sulfuration upper glue layer is formed after described patrix and the first core rod matched moulds, the second die cavity of the sulfuration lower glue layer being used for sulfuration band canvas is formed after described counterdie and the second core rod matched moulds, after middle template upset, two core rod locus exchange, first core rod and counterdie synthesize the 3rd die cavity being used for post-cure diaphragm of rubber entirety.
Description
Technical field
The utility model relates to the production mould field of rubber diaphragm of automobile brake chamber, especially processing mold, the module of the post-cure technique of air chamber rubber diaphragm.
Background technology
Rubber diaphragm of automobile brake chamber is that one is widely used in all kinds heavy-duty car (load truck, trailer, passenger vehicle, military vehicle etc.) brakes, aor brake the critical component playing sealing, transmission of pressure braking.Increase air chamber pressure by diaphragm of rubber displacement, to open brake block, holding wheel tightly, play braking effect, is the rubber being related to fatal crass, also known as safety element.Along with people are more and more higher to automobile high-speed, requirement that is comfortable, reliability (safety), the diaphragm of rubber of one of automobile brake chamber critical component is had higher requirement.
At present, the production technology that rubber diaphragm of automobile brake chamber is the most general is a sulfuration process of taking as the leading factor with Guizhou masses.The sulfurizing mould structure that the mould adopted is made up of upper and lower mould, mold cavity press cure put into by the film up and down centre being accompanied canvas simultaneously, because sizing material produces the impact of irregular flowing in die cavity by HTHP sulfurization, canvas in the middle of product is offset, exposes, the defect such as wrinkle, affect service life and the performance of product, the qualification rate of product is not high.And this technique needs rolling out film, equipment investment is large, and production cost is high.
Applicant discloses a series of air chamber rubber diaphragm die in previous patent application, as: the patent No. is 200620077724.7, 200920270877.7, 200920270878.1, 200920270879.6 Chinese utility model patent disclose partial vulcanization patrix, overall sulfuration patrix, overall sulfuration counterdie, and the pressure ring of locating that to match with upper model cavity and overall sulfuration drag chamber, the lateral surface that overall sulfuration counterdie matches with pressure ring is provided with annular ridge, and on pressure ring, be provided with several springs, achieve the location of post-cure technique and canvas, prevent canvas wrinkle and band pressure ring, ensure that product topsail cloth is placed in the middle.But in actual use, still there is shortcoming in this type of mould: pressure ring coordinates with overall sulfuration counterdie and there is gap, only the two just tightly pressing after pressure ring falls, because the thickness of canvas exists tolerance, during production, product has single inclined phenomenon; Moreover this type of mould structure determines that post-cure technique has been fed in raw material at twice, be difficult to ensure the center of the center of canvas and counterdie die cavity when putting cloth in addition on the same axis, diaphragm cloth is easy to put partially, and pressure ring was lost efficacy less than cloth because of folder, causes product to lack cloth or product list is inclined.In order to avoid these problems, need the cutting area increasing canvas in practical operation, leave more expectation, production efficiency is not high, adds the cost of the manufacturing.
Applicant is also that the raw material disclosing upper and lower glue-line in the Chinese patent of 200910249742.7 adopts two kinds to have identical sizing compound formula system but the different sizing material of curingprocess rate respectively in the patent No., the state of cure (vulcanization) of upper and lower glue-line is difficult to reach identical degree, and upper and lower glue-line more or less exists slight over cure or deficient sulphur phenomenon.
Utility model content
For problems of the prior art, primary and foremost purpose of the present utility model is to provide air chamber rubber diaphragm post-cure mould, secondary objective of the present utility model is to provide the air chamber rubber diaphragm post-cure module based on above-mentioned mould, and the utility model additionally provides the post-cure method utilizing above-mentioned Mould Machining air chamber rubber diaphragm.
To achieve these goals, the utility model air chamber rubber diaphragm post-cure mould, this mould comprises patrix, middle mould and counterdie, wherein, described patrix is arranged on cope match-plate pattern, described counterdie is arranged on lower bolster, described middle mould is arranged on and can spins upside down in middle template, middle mould is by the first core rod of surface texturing process, form with the second core rod, described first core rod and described second core rod are placed in the upper of middle template, lower surface, the first die cavity being used for a sulfuration sulfuration upper glue layer is formed after described patrix and the first core rod matched moulds, the second die cavity of the sulfuration lower glue layer being used for sulfuration band canvas is formed after described counterdie and the second core rod matched moulds, after middle template upset, two core rod locus exchange, first core rod and counterdie synthesize the 3rd die cavity being used for post-cure diaphragm of rubber entirety.
Further, described counterdie outer circumferential is equipped with canvas clamp assembly, described canvas clamp assembly comprises the posting coaxial with described second die cavity and presses the pressure ring put on this posting, formed for the gap of canvas to the second die cavity movement between described posting and described pressure ring, the setback structure that male and female matches is set in described gap, after described counterdie and described second core rod matched moulds, the edge of canvas rests in described setback structure.
Further, described pressure ring is plugged on pressure ring plate, the face, outer circumferential of pressure ring is provided with the first cannelure, described pressure ring plate is provided with second cannelure corresponding with described first cannelure, first cannelure and described second cannelure combine the annulus forming enclosed cross, be plugged with fixing spring in this duct, pressure ring be fixed on pressure ring plate.
Further, described pressure ring lower end is provided with the boss protruded downwards, and the upper surface of described counterdie and described posting is provided with the recessed rank coordinated with described boss, and the lateral surface of described boss and the medial surface on recessed rank form oriented when pressure ring presses down.
Further, described setback structure is split at least one group of annular groove on described pressure ring and described counterdie and annular ridge.
Further, described pressure ring upper surface is provided with elasticity releasing mechanism, described elasticity detaching structure is along several uniform goring push springs of pressure ring circumference, this goring push spring is arranged in the stepped hole being embedded in pressure ring upper surface, lean the lower surface in described middle template, auxiliary described first core rod or the second core rod are separated with described counterdie.
Further, described middle template comprises, the substrate that lower two-layer mirror image is arranged, this two-layer substrate removably superposes fixing by securing member, described two-layer substrate corresponding section offers the installing hole in through hole, described installing hole inwall be provided with circumferential hoop around draw-in groove, the installation spindle nose of described first core rod and described second core rod is plugged in installing hole against ground mutually, the installation spindle nose of the first core rod and the second core rod be provided with circumferential hoop around jump ring mounting groove, the jump ring protruding from described jump ring mounting groove is provided with in described jump ring mounting groove, the projection of described jump ring is resisted against on the sidewall in described draw-in groove, with this, the first core rod and the second core rod are fixed in middle template.
Further, can also offer the installing hole in blind hole on the substrate, described first core rod and described second core rod are plugged on top substrate layer and underlying substrate respectively, and are fixed by screw.
Further, described middle template is connected with the switching mechanism the first core rod and the second core rod locus exchanged, and described switching mechanism comprises and is fixed on rotating shaft in middle template perpendicular to matched moulds direction and controls the actuating unit that described rotating shaft rotates around its axis.
Further, frosting treatment is also carried out in described counterdie surface, and the surface roughness after frosting treatment is not less than Ra3.2; Described second core surface and the process of described patrix smooth surface, the surface roughness after smooth treatment is not more than Ra0.8.
Air chamber rubber diaphragm post-cure module, described module comprises the above-mentioned mould of many groups, and wherein, the patrix of all moulds is arranged on same cope match-plate pattern, the first core rod and the second core rod are arranged on the upper and lower mould of same middle template and are arranged on same lower bolster.
Further, the pressure ring in described mould is installed on same pressure ring plate.
Utilize the post-cure method of above-mentioned Mould Machining air chamber rubber diaphragm, described method comprises the steps:
Step 1. blowing, sizing material is put at the first core rod top crossed with frosting treatment in counterdie;
Step 2. places canvas, and described counterdie places canvas, and described canvas is positioned in posting, fastens pressure ring and is fixed by canvas;
Step 3. sulfuration, patrix and described first core rod matched moulds form the first die cavity, second core rod and described counterdie matched moulds form the second die cavity, and in described first die cavity, sulfuration forms a sulfuration upper glue layer, and in described second die cavity, sulfuration forms a sulfuration lower glue layer with canvas;
Step 4. die sinking, a described sulfuration upper glue layer sticks on described first core rod, and a described sulfuration lower glue layer with canvas is stayed in described counterdie;
Template during step 5. overturns, makes the locus of described first core rod and described second model exchange;
Step 6. post-cure, described first core rod and counterdie matched moulds form the 3rd die cavity, first core rod brings a described sulfuration upper glue layer into described 3rd die cavity, with stay in counterdie described in together carry out post-cure with a sulfuration lower glue layer of canvas, form the air chamber rubber diaphragm being respectively upper glue layer, canvas and lower glue layer from top to bottom.
The utility model air chamber rubber diaphragm post-cure mould can realize post-cure technique, utilizes the first core rod adhesion sulfuration upper glue layer of frosting treatment, makes it together overturn with the first core rod and carries out post-cure; Utilize posting to facilitate the location of canvas, setback structure provides damping for canvas moves in matched moulds process, prevents canvas sideslip; By canvas upper-lower compacting after matched moulds, canvas is made to there will not be skew in sulfidation.Secondly, air chamber rubber diaphragm post-cure module is equipped with many molds, production efficiency can be made to promote at double.Again, utilize the post-cure method of above-mentioned Mould Machining air chamber rubber diaphragm, not only upper and lower glue-line adopts identical sizing material, and the state of cure (vulcanization) of upper and lower glue-line aborning can reach identical degree, thorough solution, because of the service life of upper and lower glue-line over cure or deficient sulphur cause influence air chamber rubber diaphragm, shortens cure time.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a sulfuration of the utility model air chamber rubber diaphragm post-cure mould;
Fig. 2 is A place zoomed-in view in Fig. 1;
Fig. 3 is the schematic diagram of the post-cure of the utility model air chamber rubber diaphragm post-cure mould;
Fig. 4 is the structural representation of the utility model air chamber rubber diaphragm post-cure module;
Fig. 5 is the top view of Fig. 4.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is elaborated.
Be the specific embodiment of the utility model air chamber rubber diaphragm post-cure mould when a sulfuration as depicted in figs. 1 and 2, this mould mainly comprises: patrix 1, middle mould, pressure ring 9, posting 10 and counterdie 7.Wherein, patrix 1 is arranged on cope match-plate pattern 2, middle mould is arranged in the middle template that can spin upside down, pressure ring 9 is arranged on pressure ring plate 11, counterdie 7 is arranged on lower bolster 8, middle mould is by the first core rod 3 of surface texturing process, form with the second core rod 6, the upper of middle template that be placed in of first core rod 3 and the second core rod 6 mirror image ground, lower surface, first core rod 3 and the second core rod 6 spin upside down with middle template, the first die cavity 31 being used for a sulfuration sulfuration upper glue layer is formed after patrix 1 and the first core rod 3 matched moulds, the second die cavity 67 of the sulfuration lower glue layer being used for sulfuration band canvas is formed after counterdie 7 and the second core rod 6 matched moulds, after middle template upset, two core rods 3, the locus of 6 exchanges, first core rod 3 and counterdie 7 synthesize the 3rd die cavity 37(being used for post-cure diaphragm of rubber entirety and see Fig. 3).
The outer circumferential of counterdie 7 is equipped with the canvas clamp assembly be made up of pressure ring 9 and posting 10, posting 10 is coaxial with the second die cavity 67, pressure ring 9 pressure is put on posting 10, be laid in canvas on counterdie 7 the second core rod 6 descending with counterdie 7 matched moulds time, will inevitably move in the second die cavity 67, therefore, formed for the gap of canvas to the second die cavity 67 movement between posting 10 and pressure ring 9, and the setback structure that male and female matches is set in gap, damping is provided in the moving process of canvas, the edge of canvas is consistent to the second die cavity 67 displacement as much as possible, to avoid canvas sideslip in the process, posting 10 should meet when matched moulds with the position relationship of setback structure, the edge of canvas rests in setback structure, utilize setback structural clamp canvas edge, this is in subsequent heat sulfidation, avoid canvas is offset, and too many canvas can not be wasted, save canvas consumption.
Pressure ring 9 is plugged on pressure ring plate 11, the face, outer circumferential of pressure ring 9 is provided with the first cannelure (not marking in figure), pressure ring plate 11 is provided with second cannelure (in figure do not mark) corresponding with the first cannelure, first cannelure and the second cannelure combine the annulus forming enclosed cross, be plugged with in this duct and fix spring 16, utilize and fix spring 16 by relative with pressure ring plate 11 for pressure ring 9 fixing, in order to be plugged in duct by fixing spring 16, duct should have at least a place be communicated to upper surface or the lower surface of pressure ring plate 11.
The lower end of pressure ring 9 is provided with the boss protruded downwards, and the upper surface of counterdie 7 and posting 10 is provided with the recessed rank coordinated with boss, and lateral surface 17 and the medial surface 18 on recessed rank of boss form oriented when pressure ring 9 presses down.
Pressure ring 9 upper surface is provided with elasticity releasing mechanism, elasticity detaching structure is specially along several uniform goring push springs 15 of pressure ring 9 circumference, this goring push spring 15 is arranged in the stepped hole being embedded in pressure ring 9 upper surface, and the lower surface leaned in middle template, be separated with counterdie 7 for auxiliary first core rod 3 or the second core rod 6.
Setback structure is split at least one group of annular groove on pressure ring 9 and counterdie 7 20 and annular ridge 19, and certain setback structure can also be other common form, as some salient points and the combined form etc. of some pits.
In order to adapt to the production of multi-form air chamber diaphragm, and reduce the cost of manufacture of mould, in the present embodiment the first core rod 3 and the second core rod 6 are removably mounted in middle template, specifically, middle template comprises, the substrate 4 that lower two-layer mirror image is arranged, 5, this two-layer substrate 4, 5 removably superpose fixing by securing member, described securing member is bolt 14 in the present embodiment, two-layer substrate 4, 5 corresponding sections offer the installing hole in through hole, installing hole inwall be provided with circumferential hoop around draw-in groove 12, the installation spindle nose of the first core rod 3 and the second core rod 6 is plugged in installing hole against ground mutually, the installation spindle nose of the first core rod 3 and the second core rod 6 be provided with circumferential hoop around jump ring mounting groove, the jump ring 13 protruding from jump ring mounting groove is provided with in jump ring mounting groove, the projection of jump ring 13 is resisted against on the sidewall in draw-in groove 12, with this, the first core rod 3 and the second core rod 6 are fixed in middle template.
Except the installation form except the first core rod 3 shown in Fig. 1 and the second core rod 6, the installing hole in blind hole can also be offered on substrate 4,5, first core rod 3 and the second core rod 6 are plugged on top substrate layer 4 and underlying substrate 5 respectively, and are fixed by screw, and this kind of installation form is not shown.
Middle template upset can have various ways, as manual overturning the most clumsy, or overturn by conventional switching mechanism, switching mechanism is varied for those skilled in the art, want to realize the first core rod 3 and the second exchange of core rod 6 on locus, because emphasis of the present utility model does not lie in this, not with figure, exemplify several conventional switching mechanism below, switching mechanism comprises the rotating shaft be fixed on perpendicular to matched moulds direction in middle template, shaft end is connected with the actuating unit controlling this rotating shaft and rotate around its axis, actuating unit can be the sprocket wheel and chain that match, for decelerating step motor of torque etc. is transmitted in rotating shaft.
For the ease of after a sulfuration, a sulfuration upper glue layer and patrix 1 are peeled off and are sticked on the first core rod 3, while carrying out frosting treatment to the first core rod 3, to the process of patrix 1 smooth surface; For the ease of peeling off with a sulfuration lower glue layer of canvas and the second core rod 6 and stay in counterdie 7, to the second core rod 6 smooth surface process, to counterdie 7 frosting treatment, the surface roughness after above-mentioned frosting treatment is not less than Ra3.2, and the surface roughness after smooth treatment is not more than Ra0.8.
When carrying out frosting treatment, can utilize Compressed Gas that the blast medias such as white fused alumina sand, boart boart, quartzy stone sand, iron sand or resin sand are sprayed to the surface of the first core rod 3 and counterdie 7; When carrying out smooth treatment, to the chrome-faced of patrix 1 and the second core rod 6, form the chromium coating being coated on its surface, to reduce roughness.
Be illustrated in figure 3 the embodiment of the air chamber rubber diaphragm post-cure mould in Fig. 1 in post-cure, substantially identical with the structure in Fig. 1, difference is, middle template spins upside down, first core rod 3 and the second core rod 6 locus exchange, and form the 3rd die cavity 37 after the first core rod 3 and counterdie 7 matched moulds.
Be the specific embodiment of air chamber rubber diaphragm post-cure module as shown in Figure 4 and Figure 5, the mould 100 in four picture groups 1 is equipped with in module, the quantity of mould 100 can also be two groups, three groups, five groups, six groups etc., and the patrix 1 of all moulds 100 is arranged on same cope match-plate pattern 2, the first core rod 3 and the second core rod 6 are arranged on that the upper and lower mould of same middle template 7 is arranged on same lower bolster 8, pressure ring 9 is installed on same pressure ring plate 11.
The post-cure method utilizing above-mentioned Mould Machining air chamber rubber diaphragm is described, concrete procedure of processing below in conjunction with Fig. 1, Fig. 2 and Fig. 3:
Step 1. blowing, under die opening state, sizing material is put at the first core rod 3 top crossed with frosting treatment in counterdie 7;
Step 2. places canvas, first canvas is cut into posting 10 size, is placed in the posting 10 on counterdie 7, fastens pressure ring 9 and is fixed by canvas, form gap between pressure ring 9 and counterdie 7;
Step 3. sulfuration, patrix 1 and the first core rod 3 matched moulds form the first die cavity 31, second core rod 6 forms the second die cavity 67 with counterdie 7 matched moulds, a sulfuration upper glue layer is formed to the first die cavity 31 baking, a sulfuration lower glue layer with canvas is formed to the second die cavity 67 baking, ideally, after the second core rod 6 with counterdie 7 matched moulds, the edge of canvas rests in the setback structure on the gap between pressure ring 9 and counterdie 7;
Step 4. die sinking, after die sinking, a sulfuration upper glue layer sticks on the first core rod 3, and a sulfuration lower glue layer with canvas is stayed in counterdie 7;
Template during step 5. overturns, makes the locus of the first core rod 3 and the second model 6 exchange;
Step 6. post-cure, first core rod 3 forms the 3rd die cavity 37 with counterdie 7 matched moulds, a sulfuration upper glue layer is brought in the 3rd die cavity 37 by the first core rod 3, together carry out post-cure with the sulfuration lower glue layer with canvas stayed in counterdie 7, form the air chamber rubber diaphragm being respectively upper glue layer, canvas and lower glue layer from top to bottom.
Primary vulcanization: 10 ~ 40 seconds time, curing temperature 145 DEG C ~ 180 DEG C, sulfide stress 15 ~ 18Mpa; Second time sulfuration: 240 ~ 300 seconds time, curing temperature 145 DEG C ~ 180 DEG C, sulfide stress 15 ~ 18Mpa.
Above-mentioned example is just for illustration of the utility model, and embodiment of the present utility model is not limited to these examples, and what those skilled in the art made meets the various detailed description of the invention of the utility model thought all within protection domain of the present utility model.
Claims (9)
1. air chamber rubber diaphragm post-cure mould, this mould comprises patrix, middle mould and counterdie, wherein, described patrix is arranged on cope match-plate pattern, described counterdie is arranged on lower bolster, described middle mould is arranged on and can spins upside down in middle template, it is characterized in that, middle mould is by the first core rod of surface texturing process, form with the second core rod, described first core rod and described second core rod are placed in the upper of middle template, lower surface, the first die cavity being used for a sulfuration sulfuration upper glue layer is formed after described patrix and the first core rod matched moulds, the second die cavity of the sulfuration lower glue layer being used for sulfuration band canvas is formed after described counterdie and the second core rod matched moulds, after middle template upset, two core rod locus exchange, first core rod and counterdie synthesize the 3rd die cavity being used for post-cure diaphragm of rubber entirety.
2. mould as claimed in claim 1, it is characterized in that, described counterdie outer circumferential is equipped with canvas clamp assembly, described canvas clamp assembly comprises the posting coaxial with described second die cavity and presses the pressure ring put on this posting, formed for the gap of canvas to the second die cavity movement between described posting and described pressure ring, arrange the setback structure that male and female matches in described gap, after described counterdie and described second core rod matched moulds, the edge of canvas rests in described setback structure.
3. mould as claimed in claim 2, it is characterized in that, described pressure ring is plugged on pressure ring plate, the face, outer circumferential of pressure ring is provided with the first cannelure, described pressure ring plate is provided with second cannelure corresponding with described first cannelure, first cannelure and described second cannelure combine the annulus forming enclosed cross, be plugged with fixing spring, be fixed on by pressure ring on pressure ring plate in this duct.
4. mould as claimed in claim 2, it is characterized in that, described pressure ring lower end is provided with the boss protruded downwards, and the upper surface of described counterdie and described posting is provided with the recessed rank coordinated with described boss, and the lateral surface of described boss and the medial surface on recessed rank form oriented when pressure ring presses down.
5. mould as claimed in claim 2, is characterized in that, described setback structure is split at least one group of annular groove on described pressure ring and described counterdie and annular ridge.
6. mould as claimed in claim 2, it is characterized in that, described pressure ring upper surface is provided with elasticity releasing mechanism, described elasticity detaching structure is along several uniform goring push springs of pressure ring circumference, this goring push spring is arranged in the stepped hole being embedded in pressure ring upper surface, lean the lower surface in described middle template, auxiliary described first core rod or the second core rod are separated with described counterdie.
7. mould as claimed in claim 2, it is characterized in that, described middle template comprises, the substrate that lower two-layer mirror image is arranged, this two-layer substrate removably superposes fixing by securing member, described two-layer substrate corresponding section offers the installing hole in through hole, described installing hole inwall be provided with circumferential hoop around draw-in groove, the installation spindle nose of described first core rod and described second core rod is plugged in installing hole against ground mutually, the installation spindle nose of the first core rod and the second core rod be provided with circumferential hoop around jump ring mounting groove, the jump ring protruding from described jump ring mounting groove is provided with in described jump ring mounting groove, the projection of described jump ring is resisted against on the sidewall in described draw-in groove, with this, the first core rod and the second core rod are fixed in middle template.
8. based on the module of the arbitrary described mould of claim 1-7, described module comprises the above-mentioned mould of many groups, wherein, the patrix of all moulds is arranged on same cope match-plate pattern, the first core rod and the second core rod be arranged on the upper and lower mould of same middle template and be arranged on same lower bolster.
9. module as claimed in claim 8, it is characterized in that, the pressure ring in described mould is installed on same pressure ring plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420472929.XU CN204076602U (en) | 2014-08-21 | 2014-08-21 | Air chamber rubber diaphragm post-cure mould and module thereof |
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| CN201420472929.XU CN204076602U (en) | 2014-08-21 | 2014-08-21 | Air chamber rubber diaphragm post-cure mould and module thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162945A (en) * | 2014-08-21 | 2014-11-26 | 宁国市海天力工业发展有限公司 | Secondary vulcanization mold, secondary vulcanization mold set and processing method of rubber diaphragm of air chamber |
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2014
- 2014-08-21 CN CN201420472929.XU patent/CN204076602U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162945A (en) * | 2014-08-21 | 2014-11-26 | 宁国市海天力工业发展有限公司 | Secondary vulcanization mold, secondary vulcanization mold set and processing method of rubber diaphragm of air chamber |
| CN104162945B (en) * | 2014-08-21 | 2016-08-24 | 宁国市海天力工业发展有限公司 | Air chamber rubber diaphragm post-cure mould, module and processing method |
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