CN102114709B - Production process for rubber diaphragm of IC intelligent instrument closed chamber - Google Patents

Abstract

The invention discloses a production process for a rubber diaphragm of an IC (integrated circuit) intelligent instrument closed chamber. The production process adopts the scheme that: a cloth piece and a rubber piece are prepared; the cloth piece is cut in an enlarging manner according to the maximum size of a product and is shaped through thermal contraction in a set temperature for a set time period, and then is immersed in anhydrous ethyl alcohol, dried through a drying oven, and smeared with gluewater in dilute concentration; the rubber piece adopts butadiene-acrylonitrile rubber for mixing to manufacture rubber binding which is placed for set time, then punching and metering are carried out, and the set requirements of size and weight are met; then shaping is performed, a lower piece of the rubber piece is put in a cavity of a die on a vulcanizer at first and covered with the cloth piece coated with gluewater, a ring sleeve is closed for positioning, the cloth piece is guaranteed to be in the center, and then an upper shaping die is closed for shaping; the upper shaping die is demounted after shaping and an upper piece of the rubber piece is put in, an upper vulcanization die is closed, the vulcanization is carried out under a vulcanization temperature from 165 to 175 DEG C, a vulcanization pressure from 13 to 15Mpa, and a vulcanization time from 3.5 to 4.5 Mins, required automatic deflation is 2 to 3 times during the vulcanization, and the upper piece is pushed out from a hot plate center finally, the upper vulcanization die is dismounted, the product is taken out, and circulation operation can be carried out in this way; and the cooled product is trimmed to obtain the rubber diaphragm. The rubber diaphragm can be switched on and off for 3500 times under the maximal hydraulic pressure of 1Mpa without breakage and leakage, so that the technical requirements of the product are met, the product qualification rate is improved, and the product cost is lowered.

Description

IC intelligence instrument secret room production process for rubber diaphragm

Technical field

The present invention relates to a kind of production technology of epithelium, relate in particular to IC intelligence instrument secret room production process for rubber diaphragm.

Background technology

IC intelligence instrument secret room rubbery membrana dermalis is to control the strength member of discharge switch take IC as information carrier.The realization of this switching function is to control magnetic valve by IC-card, is promoted to control by magnetic valve and realizes that epithelium opens or closes the purpose of current.These properties of product require under the condition of 5～50 ℃ of environment temperatures, when source pressure is 1.0MPa, switch motion requires to reach 3000 times and epithelium is indeformable, without damaged leakage, seepage and damage, therefore rubbery membrana dermalis is the core vital part of IC intelligence instrument secret room, relation the switch performance of instrument.And the quality index of rubbery membrana dermalis finished product and manufacturing process are closely bound up, exist a lot of shortcomings according to original manufacturing convention, the bonding force problem that for example there is no concentration standard, cloth sheet and the film of the strict requirement of getting the raw materials ready, the eccentricity issues of throwing in the cloth sheet, glue, etc., because above-mentioned problems are not rigid in checking up, cause product percent of pass extremely low, waster increases severely, improve the production cost of enterprise, reduced the properties of product grade.

Summary of the invention

Technical problem to be solved by this invention be to avoid the defect of prior art and provide a kind of thermal contraction that solves the cloth sheet, cloth sheet problem placed in the middle, improve the IC intelligence instrument secret room production process for rubber diaphragm of cloth sheet and the problems such as bonding force of film, thereby reduce product cost, raising enterprise profit.

Technical problem of the present invention solves by following technical proposals:

A kind of IC intelligence instrument secret room production process for rubber diaphragm, is characterized in that this technique comprises the following steps:

1. get the raw materials ready:

The cloth sheet is got the raw materials ready:

A, the cloth sheet is pressed product full-size, and to strengthen the 10mm cutting in blocks;

B, carry out thermal contraction setting process at the temperature of 170～180 ℃, 1～3 minute time;

C, put into absolute ethyl alcohol at normal temperatures and soaked 20～30 minutes;

D, change baking oven over to and dried 2～3 minutes at 60～80 ℃ of temperature;

Cloth sheet after e, taking-up oven dry soaks dilute concentration glue and smears two sides, and is stand-by after doing;

Film is got the raw materials ready:

A, match the acrylonitrile-butadiene rubber elastomeric compound by weight and park slice after 8～12h;

B, die-cut metering: lower sheet presses that Φ 24 * 4mm is die-cut, upper slice to press Φ 20 * 4mm die-cut, and requirement calculates the weight: lower sheet 2.2 ± 0.1g, and upper slice 2 ± 0.1g, stand-by after die-cut metering;

2. setting is processed:

Sheet under the film that measures is put into mold cavity, coated the cloth sheet of glue in covering, the snare that closes location, the setting of closed die patrix, push the hot plate of vulcanizer center, and in 3～5 seconds of upper pressure, release is at once shifted out the hot plate center and is shed the setting patrix;

3. vulcanizing treatment:

After the setting patrix sheds, the film upper slice that measures is put into above die cavity cloth sheet, the sulfuration patrix that closes pushes the hot plate of vulcanizer center, vulcanize under the condition of setting curing temperature, sulfide stress and pressurize cure time, automatic deflation is 2～3 times in the pressurize sulfidation, finishes during curameter, then releases the hot plate center and opens the sulfuration patrix, take out product, with this cycle operation;

165～175 ℃ of curing temperatures, sulfide stress 13～15MPa, cure time 3.5～4.5 minutes;

4. prune by the finished product dimensional requirement after the product cooling;

5. check, pack, put in storage.

Described dilute concentration glue: TD-870: alcohol=1: 8.

The component of getting the raw materials ready of described acrylonitrile-butadiene rubber elastomeric compound is as follows by weight:

Acrylonitrile-butadiene rubber: 100 parts, zinc oxide: 5 parts, stearic acid: 1 part, N990 carbon black: 40 parts, K770:20 part, DOP plasticizer: 35 parts, MB age resistor: 0.8 part, XS-100 adhesive: 5 parts, TMTD:0.7 part, vulcanizing agent S:1 part.

compared with prior art, the present invention is to getting the raw materials ready, typing, the operations such as sulfuration have proposed strict demand, for example to the thermal contraction of cloth sheet and problem placed in the middle, the concentration of spreading glue is guaranteed the bonding force problem of rubber and cloth sheet, the material of film is required etc. all to be rigid in checking up, therefore, the switch of product under maximum working pressure 1MPa that technique produced according to the invention is made reaches 3000 times service life, still break without finding, damaged, the phenomenons such as seepage, meet the specification requirement of IC intelligence instrument secret room rubbery membrana dermalis fully, greatly improved product percent of pass, thereby reduced product cost, improved enterprise profit.

The specific embodiment

IC intelligence instrument secret room rubbery membrana dermalis is bowl-type, and the product maximum outside diameter is Φ 60mm, and total height is 10.3mm, and concrete production technology comprises the following steps:

Get the raw materials ready

The cloth sheet is got the raw materials ready:

The cloth sheet is pressed product maximum outside diameter size, and to strengthen the 10mm cutting in blocks; The cloth sheet material adopts polyamide fabric or woven dacron, and take continuous synthetic fibre cloth as good, the woven dacron distortion is large, the present embodiment adopts the continuous synthetic fibre warp-weft same-nature fabric of sea, Wuxi day cloth industry company production, specifications and models NMO285-150, wide 1.23M, add 10mm by product maximum outside diameter size and be cut into the circular cloth sheet of Φ 70mm; The cloth sheet is processed through the pyrocondensation setting of 170～180 ℃, 1 minute; Put into again absolute ethyl alcohol and soaked at normal temperatures 20～30 minutes, further shrinkage shaping; Pull out and turn baking oven and dried 2～3 minutes at 60～80 ℃ of temperature; Then the cloth sheet that will dry takes out and carried out two sides spreading glue processing the same day, and glue requires dilute concentration, i.e. TD-870: alcohol=1: 8,, as long as soak, wait dried rear stand-by.Require the cloth sheet to keep in Dark Place, must not pollute and attach impurity.

Film is got the raw materials ready:

Film adopts the acrylonitrile-butadiene rubber elastomeric compound, its batching component is as follows by weight: acrylonitrile-butadiene rubber: 100 parts, activating agent: 5 parts, zinc oxide, 1 part of stearic acid, filler: 40 parts of N990 carbon blacks, 20 parts of K770, softening agent: 35 parts, DOP plasticizer, 0.8 part of age resistor: MB, 5 parts of adhesive: XS-100,0.7 part of promoter: TMTD, 1 part of vulcanizing agent: S, add up to 208.5 parts, prepare to park slice after 8～12h after mill mixing; Then with the die-cut metering of mould: lower sheet is die-cut by Φ 24 * 4mm, upper slice be die-cut into disk by Φ 20 * 4mm, die-cut rear every calculates the weight with electronic scale, requirement: lower sheet weight 2.2 ± 0.1g, upper slice weight 2 ± 0.1g, stand-by after die-cut metering.

Setting is processed:

Setting is processed and is carried out in vulcanizer mold, and mould adopts homemade LT25-Al-06 IC intelligence instrument secret room epithelium particular manufacturing craft.Under the film that first will measure, sheet is put into mold cavity, and the cloth sheet is put into above above-mentioned lower, the snare that closes location, guarantee that the cloth sheet is placed in the middle, the setting of closed die patrix, push the hot plate of vulcanizer center, in 3～5 seconds of upper pressure, release is at once shifted out the hot plate center and is shed the setting patrix.Utilize the vulcanizer original temperature this moment, and all without being strict with, at once mentioning once pressure gently can to the down force pressure of setting patrix.

Vulcanizing treatment:

After the setting patrix sheds, the film upper slice that will measure on same vulcanizer is put into above die cavity cloth sheet, close sulfurizing mould patrix and push the hot plate of vulcanizer center, carry out vulcanizing treatment under the condition of setting curing temperature, sulfide stress and pressurize cure time, wherein:

165～175 ℃ of curing temperatures

Sulfide stress 13～15MPa

Cure time 3.5～4.5 minutes

And in the pressurize sulfidation automatic deflation 2～3 times, then withdraw from the hot plate center and open the sulfuration patrix, take out product, with this cycle operation; Prune by the finished product dimensional requirement after the product cooling; Check finally, pack, put in storage.

Be noted that setting and vulcanize and carry out on same vulcanizer, counterdie is identical, and patrix is different.

Embodiment 1:

165 ℃ of curing temperatures, sulfide stress 15MPa, pressurize cure time 4 minutes, obtain product switch life 3000 times under water source operating pressure 0.5MPa hydraulic pressure, and epithelium is without significant change, without the water leakage phenomenon.

Embodiment 2:

170 ℃ of curing temperatures, sulfide stress 14MPa, pressurize cure time 4 minutes, obtain product switch life 3500 times under water source operating pressure 1.0MPa hydraulic pressure, and epithelium is without significant change, without the water leakage phenomenon.

Embodiment 3:

175 ℃ of curing temperatures, sulfide stress 13MPa, pressurize cure time 4 minutes, obtain product switch life 3000 times under water source operating pressure 0.8MPa hydraulic pressure, and epithelium is without significant change, without the water leakage phenomenon.

Claims (1)

1. an IC intelligence instrument secret room production process for rubber diaphragm, is characterized in that this technique comprises the following steps:

1. get the raw materials ready:

The cloth sheet is got the raw materials ready:

A, the cloth sheet is pressed product full-size, and to strengthen the 10mm cutting in blocks;

B, carry out thermal contraction setting process at the temperature of 170～180 ℃, 1～3 minute time;

C, put into absolute ethyl alcohol at normal temperatures and soaked 20～30 minutes;

D, change baking oven over to and dried 2～3 minutes at 60～80 ℃ of temperature;

Cloth sheet after e, taking-up oven dry soaks dilute concentration glue and smears two sides, described dilute concentration glue: TD-870: alcohol=1: 8, and stand-by after doing;

Film is got the raw materials ready:

A, match the acrylonitrile-butadiene rubber elastomeric compound by weight and park slice after 8～12h;

B, die-cut metering: lower sheet presses that Φ 24 * 4mm is die-cut, upper slice to press Φ 20 * 4mm die-cut, and requirement calculates the weight: lower sheet 2.2 ± 0.1g, and upper slice 2 ± 0.1g, stand-by after die-cut metering;

2. setting is processed:

Sheet under the film that measures is put into mold cavity, coated the cloth sheet of glue in covering, the snare that closes location, the setting of closed die patrix, push the hot plate of vulcanizer center, upper pressure 3～5 seconds, release is at once shifted out the hot plate center and is shed the setting patrix;

3. vulcanizing treatment:

After the setting patrix sheds, the film upper slice that measures is put into above die cavity cloth sheet, the sulfuration patrix that closes pushes the hot plate of vulcanizer center, vulcanize under the condition of setting curing temperature, sulfide stress and pressurize cure time, automatic deflation is 2～3 times in the pressurize sulfidation, then release the hot plate center and open the sulfuration patrix, take out product, with this cycle operation;

165～175 ℃ of curing temperatures, sulfide stress 13～15MPa, cure time 3.5～4.5 minutes;

4. prune by the finished product dimensional requirement after the product cooling;

5. check, pack, put in storage;

The component of getting the raw materials ready of described acrylonitrile-butadiene rubber elastomeric compound is as follows by weight:

Acrylonitrile-butadiene rubber: 100 parts, zinc oxide: 5 parts, stearic acid: 1 part, N990 carbon black: 40 parts, K770:20 part, DOP plasticizer: 35 parts, MB age resistor: 0.8 part, XS-100 adhesive: 5 parts, TMTD:0.7 part, vulcanizing agent S:1 part.