A molding process for a two-color rubber watchband

Abstract

The application discloses a kind of forming processes of two-color rubber watchband, specifically related to electronic product accessory processing technical field, specific processing steps are as follows: step one, raw material preparation;Step two, raw material pretreatment;Step three, mixing;Step four, the pretreatment of mould;Step five, first oil pressure forming;Step six, deburring;Step seven, second oil pressure forming;Step eight, third oil pressure forming;Step nine, polishing;Step ten, ink and spray coating.The application mixes a certain amount of carbon fiber powder by adding in original fluorine rubber raw material, utilizes the case that carbon fiber has high temperature resistance, friction resistance and good corrosion resistance, can satisfy the detection of each function of product made, improve product quality, and by adding crushed ephedra leaf powder in ink, can form a unique protective layer on the surface of watchband made, can play the effect of driving away mosquito and improving the smell of watchband ink itself carrying.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic product accessory processing, more specifically, the present application relates to a molding process of a two-color rubber watchband. BACKGROUND

[0002] With the improvement of people's living standards, the demand for smart wearable products is also increasingly strong, and the appearance and innovation are more important. For smart wearable products, the traditional watchband is mostly single-color formed, which is difficult to meet the pursuit of consumers for product appearance.

[0003] The existing patent also sets a two-color forming process for the watchband, which simply uses fluorine rubber raw materials for forming processing. Although the prepared product can achieve the expected effect when used and can pass various tests, it lacks some strength after increasing the test times, and cannot better improve the product's high-temperature resistance, friction resistance and corrosion resistance. At the same time, the smell carried by the watchband ink cannot be dissipated for a long time, and the smell is more prominent after heating, which cannot be effectively improved. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides a molding process of a two-color rubber watchband to solve the technical problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a molding process of a two-color rubber watchband, the specific processing steps are as follows:

[0006] Step one, raw material preparation, prepare two colors of fluorine rubber and carbon fiber powder;

[0007] Step two, pretreatment of raw materials, cut the two colors of fluorine rubber into several block structures respectively, and crush the two colors of block structure fluorine rubber, after crushing, screen the two colors of crushed raw materials with a 40-mesh screen, and store the screened raw materials separately for standby;

[0008] Step three, mixing, the two colors of screened raw materials are respectively mixed with carbon fiber powder in a ratio of 5:1, and the two mixed raw materials are respectively placed for standby;

[0009] Step four, mold pretreatment, clean the mold to be used, and check whether there are defects and burrs on the inner wall of the mold cavity, if there are problems, replace other molds and clean and check again until the mold is checked without problems, then dry and preheat the mold;

[0010] Step five, once oil forming, the first mixed carbon fiber powder color fluororubber is placed into the forming once mold for oil forming, after forming, the mold is opened and cooled, obtaining the once forming product A and placing it on the lower mold plate of the twice forming mold; then the second mixed carbon fiber powder color fluororubber is placed into the once forming mold for oil forming, after forming, the mold is opened and cooled, after cooling, the punched product is punched by punching equipment, obtaining the prefabricated hole watchband structure product B;

[0011] Step six, deburring, the surface of the once forming product A and the hole watchband structure product B prepared in step five is deburred;

[0012] Step seven, twice oil forming, the hole watchband structure product B prepared in step five is placed into the twice forming mold to form the twice oil forming with the once forming product A, obtaining the twice forming product C, the twice forming product C is deburred after cooling and taking out;

[0013] Step eight, three times oil forming, the remaining two fluororubber raw materials mixed with carbon fiber powder are placed into the groove of the three times forming mold to form the lower part of the hole body, obtaining the product D;

[0014] Step nine, polishing, the obtained product D is polished and deburred, and the burrs in the hole are removed by punching equipment;

[0015] Step ten, ink and spraying, prepare a proper amount of mugwort, dry and crush, add the crushed mugwort powder into the prepared ink and mix, after mixing for a period of time, spray the mixed ink on the surface of the prepared product;

[0016] Step eleven, sulfur curing, the sprayed product is cured.

[0017] Further, the weight ratio of the two color raw materials and the carbon fiber powder in step three is used for ratio, and a special measuring cup is used for measurement or weighing before ratio.

[0018] Further, the temperature of the once oil forming in step five is 150-180℃, the forming time is 10-15min, and the pressure is 90-120kg / cm2.

[0019] Further, the temperature of the twice oil forming in step seven is 150-180℃, the forming time is 10-15min, and the pressure is 90-120kg / cm2.

[0020] Further, the three times oil pressure forming conditions in the step eight adopt temperature at 150-180 DEG C, forming time at 10-15 min, and pressure at 90-120 kg / cm2.

[0021] Further, the step ten adopts 120 mesh screen to sieve the crushed Artemisia argyi, and mixes the sieved Artemisia argyi powder with the ink.

[0022] Further, the step eleven adopts sulfur curing temperature at 150-180 DEG C, and curing time at 30-60 min.

[0023] The beneficial effects of the present application are:

[0024] By adding a certain amount of carbon fiber powder into the original fluorine rubber raw material, the carbon fiber has the advantages of high temperature resistance, friction resistance and good corrosion resistance, so that the detection of various functions of the product can be met, and the surface of the product can be without coating exposure in the rubber friction test; when the Martin Dale test is carried out, the gloss and hand feeling of the product have no obvious change; when the cold and hot impact test is carried out, the product has no delamination, no burst, no color change and no deformation; when the water boiling test is carried out, the product has no burst, no color change, no bubbles, no spots and no surface peeling; so that the product prepared by the technical scheme can be more excellent in use, and since the carbon fiber also has a certain softness, the added carbon fiber powder will not greatly change the overall toughness of the fluorine rubber watchband, and will not affect the wearing and use, and the technical scheme also adds the crushed Artemisia argyi powder to the ink, so that a unique protective layer can be formed on the surface of the watchband, and in high temperature weather, the protective layer can drive away mosquitoes due to the change of temperature, and since the Artemisia argyi has a specific fragrance, the peculiar smell of the ink itself can be mixed and improved. DETAILED DESCRIPTION

[0025] In order to make the invention purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the embodiments described below are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] Embodiment 1:

[0028] A forming process of a two-color rubber watchband, the specific processing steps are as follows:

[0029] Step one, raw material preparation, prepare two colors of fluororubber and carbon fiber powder;

[0030] Step two, pretreatment of raw materials, cut the two colors of fluororubber into several block structures respectively, and crush the two color block structure fluororubbers, after crushing, screen the two color crushed raw materials with a 40 mesh screen, and store the screened raw materials separately for standby;

[0031] Step three, mixing, the two color screened raw materials are respectively mixed with carbon fiber powder at a ratio of 5:1, and the two mixed raw materials are respectively placed for standby, wherein the ratio of the two color screened raw materials to carbon fiber powder is weight ratio, and the special measuring cup is used for measurement or weighing before mixing;

[0032] Step four, pretreatment of the mold, clean the mold to be used, and check whether there are defects and burrs on the inner wall of the mold cavity, if there are problems, replace other molds and clean and check again until there are no problems in the mold, then dry and preheat the mold;

[0033] Step five, first oil pressure forming, the first mixed carbon fiber powder color fluororubber is placed into the first forming mold for oil pressure forming, and after forming, the mold is opened and cooled to obtain a first forming product A and place it on the lower mold plate of the second forming mold; then the second mixed carbon fiber powder color fluororubber is placed into the first forming mold for oil pressure forming, and after forming, the mold is opened and cooled, and the cooled product is punched using a punching device to obtain a preformed hole watchband structure product B; in this step, the first oil pressure forming conditions are temperature at 150°C, forming time at 10 min, and pressure at 90 kg / cm2;

[0034] Step six, deburring, deburring the surface of the first forming product A and the hole watchband structure product B prepared in step five;

[0035] Step seven, second oil pressure forming, the hole watchband structure product B in step five is placed into the second forming mold to form the second oil pressure forming with the first forming product A to obtain a second forming product C, and the obtained second forming product C is cooled and taken out again for deburring treatment, in this step, the second oil pressure forming conditions are temperature at 150°C, forming time at 10 min, and pressure at 90 kg / cm2;

[0036] Step eight, three times oil forming, the remaining two kinds of fluorine rubber raw materials mixed with carbon fiber powder into the groove of the three times forming mold, so that the lower part of the hole body is encapsulated, and product D is obtained. In this step, the three times oil forming conditions are temperature at 150°C, forming time at 10 min, and pressure at 90 kg / cm2;

[0037] Step nine, polishing, polishing and deburring the obtained product D, and removing the burrs in the hole by punching equipment;

[0038] Step ten, ink and spraying, prepare an appropriate amount of leaf, dry and crush, and add the crushed leaf powder to the prepared ink and mix. After mixing for a period of time, spray the mixed ink on the surface of the prepared product. In this step, the crushed leaves are sieved through a 120 mesh sieve, and then the sieved leaf powder is mixed with the ink;

[0039] Step eleven, sulfur curing, sulfur curing of the sprayed product at a temperature of 150°C for 30 min.

[0040] Example 2:

[0041] A two-color rubber watchband forming process, the specific processing steps are as follows:

[0042] Step one, raw material preparation, prepare two colors of fluorine rubber and carbon fiber powder;

[0043] Step two, pretreatment of raw materials, cut the two colors of fluorine rubber into several block structures respectively, and crush the two color block structure fluorine rubber. After crushing, the crushed raw materials of the two colors are sieved through a 40 mesh sieve, and the sieved raw materials are stored separately for later use;

[0044] Step three, mixing, the two color sieved raw materials are mixed with carbon fiber powder at a ratio of 5:1 respectively. The two mixed raw materials are placed separately for later use. The ratio of the two color sieved raw materials to carbon fiber powder is by weight, and a special measuring cup is used for measurement or weighing before mixing;

[0045] Step four, mold pretreatment, clean the mold to be used, and check whether there are defects and burrs on the inner wall of the mold cavity. If there are problems, replace other molds and clean and check again until there are no problems in the mold. Then dry and preheat the mold;

[0046] Step five, once oil forming, the first mixed carbon fiber powder color fluororubber is placed into the forming once mold for oil forming, after forming, the mold is opened and cooled, obtaining the once formed product A and placing it on the lower mold plate of the twice forming mold; then the second mixed carbon fiber powder color fluororubber is placed into the once forming mold for oil forming, after forming, the mold is opened and cooled, after cooling, the punched product is punched by punching equipment, obtaining the prefabricated hole watchband structure product B; in this step, the once oil forming condition is that the temperature is 160℃, the forming time is 12min, and the pressure is 100kg / cm2;

[0047] Step six, deburring, the surface of the once formed product A and the hole watchband structure product B prepared in step five is deburred;

[0048] Step seven, twice oil forming, the hole watchband structure product B prepared in step five is placed into the twice forming mold to form the twice oil forming with the once formed product A, obtaining the twice formed product C, the twice formed product C is deburred after being cooled and taken out, in this step, the twice oil forming condition is that the temperature is 160℃, the forming time is 12min, and the pressure is 100kg / cm2;

[0049] Step eight, three times oil forming, the remaining two fluororubber materials mixed with carbon fiber powder are placed into the groove of the three times forming mold to form the lower part of the hole body, obtaining the product D, in this step, the three times oil forming condition is that the temperature is 160℃, the forming time is 12min, and the pressure is 100kg / cm2;

[0050] Step nine, polishing, the obtained product D is polished and deburred, and the burrs in the hole are removed by punching equipment;

[0051] Step ten, ink and spraying, a proper amount of mugwort leaves is prepared, dried and crushed, and the crushed mugwort leaf powder is mixed into the prepared ink, after mixing for a period of time, the mixed ink is sprayed on the surface of the prepared product, in this step, the crushed mugwort leaves are sieved by a 120 mesh sieve, and then the sieved mugwort leaf powder is mixed with the ink;

[0052] Step eleven, vulcanization and curing, the sprayed product is vulcanized and cured, the vulcanization and curing temperature is 160℃, and the curing time is 40min.

[0053] Example 3:

[0054] A two-color rubber watchband forming process, the specific processing steps are as follows:

[0055] Step one, raw material preparation, two colors of fluororubber and carbon fiber powder are prepared;

[0056] Step two, the pretreatment of raw materials, two colors of fluororubber are cut into several block structures respectively, and the block structures of fluororubber of two colors are broken, after the breaking treatment, the broken raw materials of two colors are screened by using a 40-mesh screen, and the screened raw materials are stored separately for standby;

[0057] Step three, mixing, the screened raw materials of two colors are respectively mixed with carbon fiber powder in a ratio of 5:1, and the two mixed raw materials are respectively placed for standby, wherein the ratio of the screened raw materials of two colors to the carbon fiber powder is weight ratio, and the ratio is achieved by using a special measuring cup for measurement or weighing;

[0058] Step four, the pretreatment of the mold, the mold to be used is cleaned, and whether there is a defect burr on the inner wall of the mold cavity is checked, if there is a problem, another mold is replaced and cleaned and checked again until no problem is found in the mold, and then the mold is dried and preheated;

[0059] Step five, one-time oil pressure forming, the first mixed carbon fiber powder of the color fluororubber is placed into the one-time forming mold for oil pressure forming, the mold is opened after forming and cooled, obtaining a one-time forming product A and placing it on the lower mold plate of the two-time forming mold; then the second mixed carbon fiber powder of the color fluororubber is placed into the one-time forming mold for oil pressure forming, the mold is opened after forming and cooled, and the punched product is punched after cooling by using a punching device, obtaining a prefabricated hole watchband structure product B; in this step, the one-time oil pressure forming condition is that the temperature is 180℃, the forming time is 15min, and the pressure is 90kg / cm2-120kg / cm2;

[0060] Step six, deburring, the surface of the one-time forming product A and the hole watchband structure product B prepared in step five are deburred;

[0061] Step seven, two-time oil pressure forming, the hole watchband structure product B in step five is placed into the two-time forming mold to form the two-time oil pressure forming with the one-time forming product A, obtaining a two-time forming product C, and the two-time forming product C is deburred after being cooled and taken out, in this step, the two-time oil pressure forming condition is that the temperature is 180℃, the forming time is 15min, and the pressure is 120kg / cm2;

[0062] Step eight, three-time oil pressure forming, the remaining two fluororubber raw materials mixed with carbon fiber powder are placed into the groove of the three-time forming mold to form the lower part of the hole body, obtaining a product D, in this step, the three-time oil pressure forming condition is that the temperature is 180℃, the forming time is 15min, and the pressure is 120kg / cm2;

[0063] Step nine, polishing, the obtained product D is polished to remove burrs, and a punching device is used to remove the burrs in the hole;

[0064] Step ten, ink and spraying, prepare a proper amount of mugwort, dry and crush, and add the crushed mugwort powder into the prepared ink for mixing. After mixing for a period of time, the mixed ink is sprayed on the surface of the prepared product. In this step, the crushed mugwort is sieved with a 120-mesh sieve, and then the sieved mugwort powder is mixed with the ink.

[0065] Step eleven, sulfur curing, the sprayed product is subjected to sulfur curing treatment, the sulfur curing temperature is 180°C, and the curing time is 60 min.

[0066] The products prepared in the above three embodiments are subjected to functional tests, and a comparative example is used for comparison. In the comparative example, no carbon fiber powder is added, and other conditions are basically the same. The prepared products are as follows:

[0067]

[0068] In summary, the functional tests of the prepared products show that, by adding a certain amount of carbon fiber powder to the original fluorine rubber raw material for mixing, the carbon fiber has good high temperature resistance, friction resistance, and corrosion resistance, which can meet the functional detection of the prepared product, so that the prepared product can have no coating exposure on the surface in the rubber friction test. In the Martin Dale test, the gloss and feel of the product have no obvious change. In the cold and hot impact test, the product has no delamination, no explosion, no color change, and no deformation. In the water boiling test, the product has no explosion, no color change, no bubbles, no spots, and no surface layer peeling. Thus, the product prepared by the technical solution can be more excellent in use. At the same time, since the carbon fiber also has a certain softness, the added carbon fiber powder will not greatly change the overall toughness of the fluorine rubber watchband, and will not affect the wearing and use. At the same time, the technical solution also adds crushed mugwort powder to the ink, which can form a unique protective layer on the surface of the prepared watchband. In high temperature weather, the protective layer can drive away mosquitoes due to the change of temperature. Since the mugwort has a specific fragrance, it can mix with the peculiar smell of the ink itself, and improve the smell carried by the watchband ink itself.

[0069] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is also possible that the use of certain terms can vary from one embodiment to another. For example, the term "first" and "second" can be interchangeable depending on the context. Also, the use of "including", "comprising" or "having" can be used as meaning "including but not limited to". Moreover, certain terminology can also be used in certain traditional ways by those of ordinary skill in the art and that is also intended to be incorporated herein by reference.

[0070] Although the embodiments of the present application have been disclosed with reference to many embodiments, a person of ordinary skill in the art understands that there are many variations, modifications, replacements and changes that can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0071] The above-described embodiments are merely used to illustrate the technical solutions of the present application, but not to limit the present application; even though the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the technical solutions recorded in the foregoing embodiments, or to make equivalent replacements to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A forming process of a two-color rubber watchband, characterized by, The specific processing steps are as follows: Step one, raw material preparation, prepare two colors of fluorine rubber and carbon fiber powder; Step two, pretreatment of raw materials, cut two colors of fluorine rubber into several block structures respectively, and crush the two color block structure fluorine rubbers, after crushing, screen the crushed raw materials with a 40 mesh screen, and store the screened raw materials separately for later use; Step three, mixing, the two color screened raw materials are respectively mixed with carbon fiber powder at a ratio of 5:1, and the two mixed raw materials are respectively placed for later use; Step four, mold pretreatment, clean the mold to be used, and check whether there are defects and burrs on the inner wall of the mold cavity, if there are problems, replace other molds and clean and check again until there are no problems in the mold, then dry and preheat the mold; Step five, one-time oil pressure forming, the first mixed carbon fiber powder of the color fluorine rubber is placed into the one-time forming mold for oil pressure forming, the mold is opened and cooled after forming, and the one-time forming product A is obtained and placed on the lower mold plate of the two-time forming mold; then the second mixed carbon fiber powder of the color fluorine rubber is placed into the one-time forming mold for oil pressure forming, the mold is opened and cooled after forming, and the product after cooling is punched by using a punching device to obtain a preformed hole watchband structure product B; Step six, deburring, the surface of the one-time forming product A and the hole watchband structure product B prepared in step five is deburred; Step seven, two-time oil pressure forming, the hole watchband structure product B in step five is placed into the two-time forming mold to form the two-time oil pressure forming product C with the one-time forming product A, and the two-time oil pressure forming product C is deburred after cooling and taking out; Step eight, three-time oil pressure forming, the remaining two fluorine rubber raw materials mixed with carbon fiber powder are placed into the groove of the three-time forming mold to form the lower part of the hole body, and product D is obtained; Step nine, polishing, the obtained product D is polished and deburred, and the burrs in the hole are removed by using a punching device; Step ten, ink and spraying, prepare an appropriate amount of leaf, dry and crush, and mix the crushed leaf powder into the prepared ink, spray the surface of the prepared product with the mixed ink after mixing for a period of time; Step eleven, vulcanization and curing, the product after spraying is vulcanized and cured.

2. The process for forming a two-color rubber watchband according to claim 1, wherein: In step three, the two color screened raw materials and carbon fiber powder are mixed by weight, and a special measuring cup is used for measurement or weighing before mixing.

3. The process for forming a two-color rubber watchband of claim 1, wherein: In step five, the one-time oil pressure forming conditions are temperature 150-180℃, forming time 10-15min, and pressure 90-120kg / cm2.

4. The process for forming a two-color rubber watchband of claim 1, wherein: In step seven, the two-time oil pressure forming conditions are temperature 150-180℃, forming time 10-15min, and pressure 90-120kg / cm2.

5. The process for forming a two-color rubber watchband of claim 1, wherein: The three times oil pressure forming conditions in the eighth step adopt temperature at 150-180℃, forming time at 10-15min, and pressure at 90-120kg / cm2.

6. The process for forming a two-color rubber watchband of claim 1, wherein: The crushed Artemisia argyi leaves are sieved by a 120-mesh screen in the tenth step, and the sieved Artemisia argyi leaf powder is mixed with the ink.

7. The process for forming a two-color rubber watchband of claim 1, wherein: The sulfur curing temperature in the eleventh step is at 150-180℃, and the curing time is at 30-60min.

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