CN110756502A - Cleaning method of watch cover plate - Google Patents
Cleaning method of watch cover plate Download PDFInfo
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- CN110756502A CN110756502A CN201810836074.7A CN201810836074A CN110756502A CN 110756502 A CN110756502 A CN 110756502A CN 201810836074 A CN201810836074 A CN 201810836074A CN 110756502 A CN110756502 A CN 110756502A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/048—Overflow-type cleaning, e.g. tanks in which the liquid flows over the tank in which the articles are placed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/722—Ethers of polyoxyalkylene glycols having mixed oxyalkylene groups; Polyalkoxylated fatty alcohols or polyalkoxylated alkylaryl alcohols with mixed oxyalkylele groups
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2068—Ethers
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/22—Carbohydrates or derivatives thereof
- C11D3/221—Mono, di- or trisaccharides or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/33—Amino carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/008—Polymeric surface-active agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
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- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
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- Molecular Biology (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention provides a method for cleaning a watch cover plate, which comprises the following steps: the cleaning by the cleaning agent specifically comprises the following steps: putting the watch cover plate into a cleaning agent for cleaning; rinsing, specifically: rinsing the cleaned watch cover plate; water cutting, specifically: cutting off a water layer on the surface of the watch cover plate by using a slow-pulling groove; drying, specifically: drying the watch cover plate after slowly pulling and cutting water; the cleaning agent comprises the following components in percentage by mass: 5-10% of acid, 1-7% of water hardness regulator, 5-10% of organic solvent, 6-16% of surfactant, 3-8% of penetrant and the balance of water. Compared with the cleaning method in the prior art, the cleaning method comprises the following steps: the cleaning method is simple, low in cost, mild in condition and environment-friendly, and micro-nano-scale dirt can be effectively removed through interaction among the components, so that the color difference reject ratio of the silk screen is reduced.
Description
Technical Field
The invention relates to the technical field of glass cleaning, in particular to a method for cleaning a watch cover plate.
Background
More and more watch manufacturers on the market adopt whole 2.5D cambered surface glass as the wrist-watch apron at present, and whole 2.5D cambered surface apron can increase the stereoscopic vision effect of wrist-watch, improves wrist-watch grade. However, due to the structural characteristics of the whole 2.5D cambered surface watch cover plate, after the watch cover plate is cleaned by using a common cleaning agent and slowly pulled, large-area water is easy to accumulate at the contact part of the bottom of the glass and the gear of the cleaning frame, and after the watch cover plate is baked, macroscopic-invisible micro-nano-scale dirt is easy to form at the contact part of the bottom of the glass and the gear of the cleaning frame, so that the subsequent screen printing of the ink on the gram head cannot be seen, the irregular color difference is presented, and finally, the problems of poor color difference of batch screen printing, low production efficiency and.
In summary, there is a need for a watch cover cleaning method to solve the problems of the prior art.
Disclosure of Invention
The invention aims to provide a method for cleaning a watch cover plate, which has the following specific technical scheme:
a method for cleaning a watch cover plate comprises the following steps:
the cleaning by the cleaning agent specifically comprises the following steps: putting the watch cover plate into a cleaning agent for cleaning;
rinsing, specifically: rinsing the cleaned watch cover plate;
water cutting, specifically: cutting off a water layer on the surface of the watch cover plate by using a slow-pulling groove;
drying, specifically: drying the watch cover plate after slowly pulling and cutting water;
the cleaning agent comprises the following components in percentage by mass: 5-10% of acid, 1-7% of water hardness regulator, 5-10% of organic solvent, 6-16% of surfactant, 3-8% of penetrant and the balance of water.
Preferably, in the above technical solution, the acid includes at least one of citric acid, oxalic acid or hydrochloric acid; the water hardness regulator comprises at least one of sodium gluconate, sodium glucoheptonate, sodium citrate, disodium ethylene diamine tetraacetate or tetrasodium ethylene diamine tetraacetate; the surfactant comprises at least one of fatty alcohol-polyoxyethylene ether, isomeric alcohol-polyoxyethylene ether or polyethylene glycol polyether; the penetrating agent comprises fatty alcohol-polyoxyethylene ether; the organic solvent comprises at least one of propylene glycol methyl ether, dipropylene glycol methyl ether, ethylene glycol ethyl ether, propylene glycol butyl ether or dipropylene glycol butyl ether.
Preferably, in the above technical solution, the acid is citric acid; the water hardness regulator comprises sodium gluconate and disodium ethylene diamine tetraacetate; the surfactant comprises fatty alcohol-polyoxyethylene ether AEO-9 and isomeric alcohol-polyoxyethylene ether TO-7; the penetrant is JFC series penetrant; the organic solvent is propylene glycol methyl ether.
In the above technical scheme, the composition preferably comprises the following components in percentage by mass: 6-10% of citric acid, 1-5% of sodium gluconate, 1-2% of disodium ethylene diamine tetraacetate, 6-10% of propylene glycol methyl ether, 4-8% of fatty alcohol polyoxyethylene ether AEO-9, 4-8% of isomeric alcohol polyoxyethylene ether TO-7, 3-5% of JFC and the balance of deionized water.
Preferably, in the above technical scheme, the cleaning agent is mixed with pure water in a weight ratio of 1: (50-100) and mixing to form cleaning solution, wherein the cleaning time is 3-5 minutes, and the temperature is 45-55 ℃; the frequency of cleaning solution replacement is 8-12 hours/time.
Preferably, in the above technical scheme, the rinsing comprises three stages, wherein the first stage is common rinsing, and the second stage and the third stage are overflow rinsing; rinsing each section for 3-5 minutes at 60-70 deg.C, and using pure water for rinsing each section; the frequency of pure water replacement is 4 to 6 hours/time.
Preferably, in the above technical scheme, the cleaning solution further comprises a spray tank for leaching after cleaning and before rinsing, and pure water is used for leaching, wherein the leaching time is 3-5 minutes, and the leaching flow is 2L/min-4L/min; and the pure water is from the pure water overflowing in the overflow rinsing process and returns to the leaching tank for leaching.
Preferably, in the technical scheme, pure water is adopted in the slow-pulling groove, the water cutting time is 2-5 minutes, the temperature is 70-80 ℃, and the slow-pulling speed is 0.2-0.3 m/min; the frequency of pure water replacement is 4 to 6 hours/time.
Preferably, in the above technical scheme, the drying comprises three sections, wherein the drying time of each section is 3-5 minutes, and the temperature is 110-130 ℃.
Preferably, in the above technical scheme, the cleaning and rinsing of the cleaning solution are both performed in an ultrasonic cleaning machine, and the ultrasonic current is 2-4 amperes;
and baking the dried watch cover plate, wherein the baking temperature is 120-140 ℃, and the baking time is 10-15 minutes.
The technical scheme of the invention has the following beneficial effects:
(1) the cleaning agent provided by the invention comprises the following components in percentage by mass: 5-10% of acid, 1-7% of water hardness regulator, 5-10% of organic solvent, 6-16% of surfactant, 3-8% of penetrant and the balance of water; the acid comprises citric acid, the water hardness regulator comprises sodium gluconate and disodium ethylene diamine tetraacetate, the surfactant comprises fatty alcohol-polyoxyethylene ether and heterogeneous alcohol-polyoxyethylene ether, the penetrating agent comprises fatty alcohol-polyoxyethylene ether, and the organic solvent comprises propylene glycol methyl ether. Compared with the prior art, the cleaning method adopting the cleaning agent provided by the invention has the advantages that: the cleaning method is simple, low in cost, mild in condition and environment-friendly, and micro-nano-scale dirt can be effectively removed through interaction among the components, so that the color difference reject ratio of the silk screen is reduced.
(2) According to the invention, the citric acid and the sodium gluconate and the disodium ethylene diamine tetraacetate in the water hardness regulator are both beneficial to reducing the hardness of pure water in the cleaning tank and improving the cleaning effect of the cleaning agent; the fatty alcohol-polyoxyethylene ether AEO-9 and the isomeric alcohol-polyoxyethylene ether TO-7 in the surfactant are matched with each other, so that the emulsifying capacity of the cleaning agent is enhanced, and the cleaning effect is improved; the penetrating agent JFC has the capacity of removing dirt at the contact position of cleaning agent cleaning glass and cleaning frame; the organic solvent propylene glycol methyl ether has a solvent effect, is not only helpful for mixing all components of the cleaning agent into a whole and not easy to delaminate, but also is helpful for improving the capacity of cleaning the surface of glass.
(3) When the cleaning agent is used for cleaning, the cleaning agent and pure water are mixed according to the weight ratio of 1: (50-100) and mixed into the cleaning solution, which greatly reduces the production cost while ensuring the efficiency of the cleaning solution.
(4) The cleaning solution is replaced at a frequency of 8-12 hours/time, so that the working efficiency of the cleaning solution is ensured, and the production cost is reduced conveniently; the frequency of replacing pure water in the rinsing tank and the slow-pulling tank is 4-6 hours/time, so that water resources can be saved while the rinsing and water cutting effects are ensured; in addition, the washing, rinsing and drying time is 3-5 minutes, the water cutting time is only 2-5 minutes, and the baking time is 10-15 minutes, which shows that the invention has short time, namely high working efficiency.
(5) According to the invention, the cleaning and rinsing of the cleaning solution are carried out in an ultrasonic cleaning machine, and the ultrasonic current is 2-4 amperes, so that the optimal cleaning and rinsing effects are ensured; the cleaning temperature of the cleaning solution is 45-55 ℃, the best cleaning effect is fully ensured, and meanwhile, the energy is saved; the temperature of other sections is set, such as the rinsing temperature is 60-70 ℃, the water cutting temperature is 70-80 ℃, the drying temperature is 110-130 ℃, the baking temperature is 120-140 ℃, so that the energy is saved while the best effect is ensured; in addition, the leaching flow is 2L/min-4L/min, the slow-pulling speed is 0.2m/min-0.3m/min, and the optimal effect is ensured, and meanwhile, the energy is saved.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail with reference to examples.
Detailed Description
The solution according to the invention is explained in detail below with reference to specific examples, but the invention can be implemented in many different ways, as defined and covered by the claims.
Example 1:
a cleaning method of a watch cover plate is particularly suitable for a whole 2.5D cambered surface glass watch cover plate, and the adopted equipment specifically comprises a 2.5D ultrasonic cleaning machine which is used for cleaning, leaching, rinsing, water cutting and drying the whole 2.5D cambered surface glass watch cover plate, namely the 2.5D ultrasonic cleaning machine comprises a spraying groove for leaching, a rinsing overflow groove for rinsing, a slow-pulling groove for water cutting and a drying groove for drying; the oven is used for baking and dewatering the whole 2.5D cambered surface glass watch cover plate.
The specific process for cleaning the whole 2.5D cambered surface glass watch cover plate is as follows:
the first step is as follows: the pretreatment is specifically that a common cleaning agent and pure water in the prior art are adopted according to the weight ratio of 1: 20 mix into 20kg ordinary washing liquid and wash whole face 2.5D cambered surface glass watch cover plate, wherein: the cleaning time is 4 minutes, the temperature is 50 ℃, the ultrasonic current is 3 amperes, and the replacement frequency of the common cleaning solution is 8 hours/time;
the second step is that: cleaning with a cleaning solution, specifically, the cleaning solution and pure water are mixed according to the weight ratio of 1: 50 mix into 20kg the washing liquid washs whole face 2.5D cambered surface glass watch cover plate, wherein: the cleaning time is 4 minutes, the temperature is 50 ℃, the ultrasonic current is 3 amperes, and the cleaning fluid replacement frequency is 8 hours/time;
the third step: and leaching, specifically, placing the whole 2.5D cambered surface glass watch cover plate in a spray tank, and leaching by adopting pure water, wherein: the leaching time is 4 minutes, and the leaching flow is 3L/min; the pure water is from the pure water overflowed in the overflow rinsing process and returns to the leaching tank for leaching;
the fourth step: and rinsing, specifically, the rinsing comprises three sections, the first section is common rinsing, and the second section and the third section both place the whole 2.5D cambered surface glass watch cover plate in a rinsing overflow groove for overflow rinsing, wherein: the rinsing time of each section is 4 minutes, the temperature is 65 ℃, pure water is adopted for each section of rinsing, the ultrasonic current of each section is 3 amperes, and the pure water replacement frequency is 4 hours/time;
the fifth step: cutting water, specifically, arranging the whole 2.5D cambered surface glass watch cover plate in a slow groove, and adopting pure water, wherein: the water cutting time is 3 minutes, the temperature is 75 ℃, and the slow-pulling rate is 0.25 m/min; the pure water replacement frequency is 4 hours/time;
and a sixth step: drying, specifically, put whole 2.5D cambered surface glass wrist-watch apron in the drying groove, the drying includes the three-section, and every section is a drying groove, wherein: each section of drying time is 4 minutes, and the temperature is 120 ℃;
the seventh step: toast, specifically, will toast in the oven through the whole face 2.5D cambered surface glass watch cover plate after the drying, wherein: the baking temperature was 130 ℃ and the baking time was 12 minutes.
The common cleaning agent comprises the following components in percentage by mass: 15% of sodium hydroxide, 10% of sodium carbonate, 2% of JFC and 73% of deionized water.
The cleaning agent comprises the following components in percentage by mass: 8% of citric acid, 3% of sodium gluconate, 2% of disodium ethylene diamine tetraacetate, 8% of propylene glycol methyl ether, 5% of fatty alcohol-polyoxyethylene ether AEO-9 (available), 5% of isomeric alcohol-polyoxyethylene ether TO-7 (available), 3% of JFC and 74% of deionized water.
By adopting the cleaning solution 20kg of the embodiment, 1000 pieces of the whole 2.5D cambered surface glass watch cover plate can be cleaned, and the performance parameters are detailed in Table 1.
Example 2:
the present embodiment is different from embodiment 1 in that: the specific process of cleaning is as follows:
the first step is as follows: the pretreatment is specifically that a common cleaning agent and pure water in the prior art are adopted according to the weight ratio of 1: 20 mix into 20kg ordinary washing liquid and wash whole face 2.5D cambered surface glass watch cover plate, wherein: the cleaning time is 3 minutes, the temperature is 45 ℃, the ultrasonic current is 2 amperes, and the replacement frequency of the common cleaning solution is 8 hours/time;
the second step is that: cleaning with a cleaning solution, specifically, the cleaning solution and pure water are mixed according to the weight ratio of 1: 50 mix into 20kg the washing liquid washs whole face 2.5D cambered surface glass watch cover plate, wherein: the cleaning time is 3 minutes, the temperature is 45 ℃, the ultrasonic current is 2 amperes, and the cleaning fluid replacement frequency is 8 hours/time;
the third step: and leaching, specifically, placing the whole 2.5D cambered surface glass watch cover plate in a spray tank, and leaching by adopting pure water, wherein: the leaching time is 3 minutes, and the leaching flow is 2L/min; the pure water is from the pure water overflowed in the overflow rinsing process and returns to the leaching tank for leaching;
the fourth step: and rinsing, specifically, the rinsing comprises three sections, the first section is common rinsing, and the second section and the third section both place the whole 2.5D cambered surface glass watch cover plate in a rinsing overflow groove for overflow rinsing, wherein: rinsing each section for 3 minutes at 60 ℃, wherein pure water is adopted for rinsing each section, the current of ultrasonic waves of each section is 2 amperes, and the replacement frequency of the pure water is 4 hours/time;
the fifth step: cutting water, specifically, arranging the whole 2.5D cambered surface glass watch cover plate in a slow groove, and adopting pure water, wherein: the water cutting time is 2 minutes, the temperature is 70 ℃, and the slow-pulling rate is 0.2 m/min; the pure water replacement frequency is 4 hours/time;
and a sixth step: drying, specifically, put whole 2.5D cambered surface glass wrist-watch apron in the drying groove, the drying includes the three-section, and every section is a drying groove, wherein: each section of drying time is 3 minutes, and the temperature is 110 ℃;
the seventh step: toast, specifically, will toast in the oven through the whole face 2.5D cambered surface glass watch cover plate after the drying, wherein: the baking temperature was 120 ℃ and the baking time was 10 minutes.
Example 3:
the present embodiment is different from embodiment 1 in that: the specific process of cleaning is as follows:
the first step is as follows: the pretreatment is specifically that a common cleaning agent and pure water in the prior art are adopted according to the weight ratio of 1: 20 mix into 20kg ordinary washing liquid and wash whole face 2.5D cambered surface glass watch cover plate, wherein: the cleaning time is 5 minutes, the temperature is 55 ℃, the ultrasonic current is 4 amperes, and the replacement frequency of the common cleaning solution is 8 hours/time;
the second step is that: cleaning with a cleaning solution, specifically, the cleaning solution and pure water are mixed according to the weight ratio of 1: 50 mix into 20kg the washing liquid washs whole face 2.5D cambered surface glass watch cover plate, wherein: the cleaning time is 5 minutes, the temperature is 55 ℃, the ultrasonic current is 4 amperes, and the cleaning fluid replacement frequency is 8 hours/time;
the third step: and leaching, specifically, placing the whole 2.5D cambered surface glass watch cover plate in a spray tank, and leaching by adopting pure water, wherein: the leaching time is 5 minutes, and the leaching flow is 4L/min; the pure water is from the pure water overflowed in the overflow rinsing process and returns to the leaching tank for leaching;
the fourth step: and rinsing, specifically, the rinsing comprises three sections, the first section is common rinsing, and the second section and the third section both place the whole 2.5D cambered surface glass watch cover plate in a rinsing overflow groove for overflow rinsing, wherein: the rinsing time of each section is 5 minutes, the temperature is 70 ℃, pure water is adopted for each section of rinsing, the ultrasonic current of each section is 4 amperes, and the pure water replacement frequency is 4 hours/time;
the fifth step: cutting water, specifically, arranging the whole 2.5D cambered surface glass watch cover plate in a slow groove, and adopting pure water, wherein: the water cutting time is 5 minutes, the temperature is 80 ℃, and the slow-pulling rate is 0.3 m/min; the pure water replacement frequency is 4 hours/time;
and a sixth step: drying, specifically, put whole 2.5D cambered surface glass wrist-watch apron in the drying groove, the drying includes the three-section, and every section is a drying groove, wherein: each section of drying time is 5 minutes, and the temperature is 130 ℃;
the seventh step: toast, specifically, will toast in the oven through the whole face 2.5D cambered surface glass watch cover plate after the drying, wherein: the baking temperature was 140 ℃ and the baking time was 15 minutes.
Comparative example 1:
this comparative example differs from example 1 in that: and (3) performing' second step: cleaning with cleaning solution.
Comparative example 2:
this comparative example differs from example 1 in that: citric acid was 4% and deionized water was 78%.
Comparative example 3:
this comparative example differs from example 1 in that: 11% of citric acid and 71% of deionized water.
Comparative example 4:
this comparative example differs from example 1 in that: 0.5 percent of sodium gluconate and 76.5 percent of deionized water.
Comparative example 5:
this comparative example differs from example 1 in that: 8% of sodium gluconate and 67% of deionized water.
Comparative example 6:
this comparative example differs from example 1 in that: does not contain ethylene diamine tetraacetic acid, and the deionized water accounts for 76 percent.
Comparative example 7:
this comparative example differs from example 1 in that: 5% of fatty alcohol-polyoxyethylene ether AEO-9 and 72% of deionized water.
Comparative example 8:
this comparative example differs from example 1 in that: fatty alcohol polyoxyethylene ether AEO-9 accounts for 17%, and deionized water accounts for 60%.
Comparative example 9:
this comparative example differs from example 1 in that: JFC accounts for 2%, and deionized water accounts for 75%.
Comparative example 10:
this comparative example differs from example 1 in that: JFC accounts for 9 percent, and deionized water accounts for 68 percent.
Comparative example 11:
this comparative example differs from example 1 in that: the frequency of cleaning solution changes in the second step was 6 hours/time.
Comparative example 12:
this comparative example differs from example 1 in that: the frequency of cleaning solution changes in the second step was 14 hours/time.
15 sets of tests were designed, each set of tests using 1000 full-face 2.5D curved glass watch covers, and the cleaning methods used in the 15 sets of tests were example 1, example 2, example 3, and comparative examples 1-12, respectively, with the results shown in table 1:
the performance of the full 2.5D cambered surface glass watch cover plate obtained by the cleaning method of this example is detailed in table 1.
TABLE 1 comparison of the properties of the full 2.5D cambered surfaces of the watch covers obtained in examples 1-3 and comparative examples 1-12
From table 1, it can be seen that:
1. the cleaning method (see the embodiment 1-3 in detail) can control the problem of poor color of silk-screen printing, and the poor color rate of silk-screen printing of the whole 2.5D cambered surface glass watch cover plate after cleaning is kept below 5%; illustrated by example 2 and example 3: the increase of parameters such as cleaning time, temperature and the like is beneficial to the full contact and efficient cleaning of the cleaning liquid and the whole 2.5D cambered surface glass watch cover plate so as to remove micro-nano-scale dirt, thereby reducing the color difference defect rate of the printing from 4.9% to 3.9%.
2. As can be seen from the comparison of example 1 with comparative example 1: the common cleaning agent and the pure water are 1: 20 to 20kg of common cleaning liquid, and the cleaning agent of the invention and pure water are mixed according to the weight ratio of 1: 50 are mixed into 20kg of the cleaning solution, namely the cleaning agent disclosed by the invention is diluted by 30 times compared with a common cleaning agent, and the cleaning effect of the cleaning agent disclosed by the invention is improved by more than 10 times compared with the cleaning effect of the common cleaning agent in the prior art, so that the cleaning agent disclosed by the invention is obviously superior to the prior art, and the problem of poor heterochrosis of silk screen printing can be effectively controlled.
3. Compared with the comparative examples 2-5, the cleaning agent disclosed by the invention has the advantages that the citric acid and the sodium gluconate are important, and both the citric acid and the sodium gluconate are beneficial to reducing the hardness of pure water in the cleaning liquid and improving the cleaning effect; the citric acid and the sodium gluconate adopt proper mass percentages, so that the cleaning effect of the whole 2.5D cambered surface glass watch cover plate and the color-poor ratio of silk-screen printing can be met, and the production cost can be reduced.
4. Compared with the comparative example 6, the effect of the disodium ethylene diamine tetraacetate in the cleaning agent is not negligible, and the addition of the disodium ethylene diamine tetraacetate is beneficial to reducing the hardness of pure water in the cleaning solution, so that the cleaning effect can be obviously improved, and the color defect rate of silk screen printing of the whole 2.5D cambered surface glass watch cover plate is further reduced.
5. Compared with the comparative examples 7-10, the fatty alcohol-polyoxyethylene ether AEO-9 and JFC in the cleaning agent are important, and the fatty alcohol-polyoxyethylene ether AEO-9 can enhance the emulsifying capacity of the cleaning agent, so that the cleaning effect is improved; JFC has the capability of removing dirt at the contact position of cleaning agent cleaning glass and cleaning frame; the fatty alcohol-polyoxyethylene ether AEO-9 and JFC adopt proper mass percentages to meet the cleaning effect of the whole 2.5D cambered surface glass watch cover plate and the color reject ratio of silk-screen printing, and also can reduce the production cost.
6. Compared with the comparative examples 11-12, the cleaning solution replacement frequency has great influence on the cleaning effect of the whole 2.5D cambered surface glass watch cover plate, the cleaning solution replacement frequency is high, the cleaning effect is good, the color defect rate of silk-screen printing is low, but effective components in the cleaning solution are not used up, so that the cost waste is caused; the cleaning solution has low replacement frequency, poor cleaning effect and high color reject ratio of silk-screen printing. It is important to change the cleaning solution with a suitable frequency.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for cleaning a watch cover plate is characterized by comprising the following steps:
the cleaning by the cleaning agent specifically comprises the following steps: putting the watch cover plate into a cleaning agent for cleaning;
rinsing, specifically: rinsing the cleaned watch cover plate;
water cutting, specifically: cutting off a water layer on the surface of the watch cover plate by using a slow-pulling groove;
drying, specifically: drying the watch cover plate after slowly pulling and cutting water;
the cleaning agent comprises the following components in percentage by mass: 5-10% of acid, 1-7% of water hardness regulator, 5-10% of organic solvent, 6-16% of surfactant, 3-8% of penetrant and the balance of water.
2. The method of cleaning a watch cover according to claim 1, wherein the acid comprises at least one of citric acid, oxalic acid, or hydrochloric acid; the water hardness regulator comprises at least one of sodium gluconate, sodium glucoheptonate, sodium citrate, disodium ethylene diamine tetraacetate or tetrasodium ethylene diamine tetraacetate; the surfactant comprises at least one of fatty alcohol-polyoxyethylene ether, isomeric alcohol-polyoxyethylene ether or polyethylene glycol polyether; the penetrating agent comprises fatty alcohol-polyoxyethylene ether; the organic solvent comprises at least one of propylene glycol methyl ether, dipropylene glycol methyl ether, ethylene glycol ethyl ether, propylene glycol butyl ether or dipropylene glycol butyl ether.
3. The method of cleaning a watch cover plate of claim 2, wherein the acid is citric acid; the water hardness regulator comprises sodium gluconate and disodium ethylene diamine tetraacetate; the surfactant comprises fatty alcohol-polyoxyethylene ether AEO-9 and isomeric alcohol-polyoxyethylene ether TO-7; the penetrant is JFC series penetrant; the organic solvent is propylene glycol methyl ether.
4. The method for cleaning the watch cover plate according to claim 3, wherein the method comprises the following components in percentage by mass: 6-10% of citric acid, 1-5% of sodium gluconate, 1-2% of disodium ethylene diamine tetraacetate, 6-10% of propylene glycol methyl ether, 4-8% of fatty alcohol polyoxyethylene ether AEO-9, 4-8% of isomeric alcohol polyoxyethylene ether TO-7, 3-5% of JFC and the balance of deionized water.
5. The method for cleaning the watch cover plate according to claim 4, wherein the cleaning agent is mixed with pure water in a weight ratio of 1: (50-100) and mixing to form cleaning solution, wherein the cleaning time is 3-5 minutes, and the temperature is 45-55 ℃; the frequency of cleaning solution replacement is 8-12 hours/time.
6. The method of cleaning a watch bezel of claim 5, wherein the rinsing comprises three stages, a first stage being a normal rinse, and a second and third stage being an overflow rinse; rinsing each section for 3-5 minutes at 60-70 deg.C, and using pure water for rinsing each section; the frequency of pure water replacement is 4 to 6 hours/time.
7. The method for cleaning the watch cover plate according to claim 5, further comprising a spraying tank for washing after the cleaning solution is cleaned and before the cleaning solution is rinsed, and washing is carried out by adopting pure water, wherein the washing time is 3-5 minutes, and the washing flow is 2L/min-4L/min; and the pure water is from the pure water overflowing in the overflow rinsing process and returns to the leaching tank for leaching.
8. The method for cleaning a watch cover plate according to claim 5, wherein pure water is adopted in the slow-pulling groove, the water cutting time is 2-5 minutes, the temperature is 70-80 ℃, and the slow-pulling speed is 0.2-0.3 m/min; the frequency of pure water replacement is 4 to 6 hours/time.
9. The method of claim 5, wherein the drying step comprises three drying steps, each drying step being performed for a time of 3 to 5 minutes at a temperature of 110 ℃ to 130 ℃.
10. The method for cleaning a watch cover plate according to any one of claims 5 to 9, wherein the cleaning solution cleaning and the rinsing are both performed in an ultrasonic cleaning machine, and the ultrasonic current is 2 to 4 amperes;
and baking the dried watch cover plate, wherein the baking temperature is 120-140 ℃, and the baking time is 10-15 minutes.
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