阅读说明：本技术 一种可折叠玻璃产品端面抛光工艺 (End face polishing process for foldable glass product ) 是由 黄建军 梁建 陈优奇 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种可折叠玻璃产品端面抛光工艺,包括以下步骤：S2、将通过CNC加工好的可折叠玻璃产品插入到专用清洗架的插接位内,所述可折叠玻璃产品的正面和背面都覆盖有保护片；S4、将插入有可折叠玻璃产品的专用清洗架放入到浓度为1-3％的混合酸液中进行浸泡15-30分钟,以通过混合酸液对可折叠玻璃产品的四个端面进行化学端面抛光；S6、浸泡好后,将专用清洗架从混合酸液中取出,并将专用清洗架上的可折叠玻璃产品取下；S8、通过平板清洗机对从专用清洗架上取下的可折叠玻璃产品进行清洗,以去除残留的混合酸液。本发明通过对可折叠玻璃产品的四个端面进行化学端面抛光和物理端面抛光,抛光区域无死角,提高了抛光效率。(The invention discloses a polishing process for the end face of a foldable glass product, which comprises the following steps: s2, inserting the foldable glass product processed by CNC into the inserting position of the special cleaning rack, wherein the front and the back of the foldable glass product are covered with protective plates; s4, placing the special cleaning rack inserted with the foldable glass product into a mixed acid solution with the concentration of 1-3% for soaking for 15-30 minutes, and carrying out chemical end face polishing on four end faces of the foldable glass product through the mixed acid solution; s6, after soaking, taking the special cleaning rack out of the mixed acid liquor, and taking down the foldable glass product on the special cleaning rack; and S8, cleaning the foldable glass product taken down from the special cleaning rack by a flat plate cleaning machine to remove residual mixed acid liquor. According to the invention, the four end faces of the foldable glass product are subjected to chemical end face polishing and physical end face polishing, so that a polishing area has no dead angle, and the polishing efficiency is improved.)

1. A foldable glass product end face polishing process is characterized by comprising the following steps:

s2, inserting the foldable glass product processed by CNC into the inserting position of the special cleaning rack, wherein the front and the back of the foldable glass product are covered with protective plates;

s4, placing the special cleaning rack inserted with the foldable glass product into a mixed acid solution with the concentration of 1-3% for soaking for 15-30 minutes, and carrying out chemical end face polishing on four end faces of the foldable glass product through the mixed acid solution;

s6, after soaking, taking the special cleaning rack out of the mixed acid liquor, and taking down the foldable glass product on the special cleaning rack;

s8, cleaning the foldable glass product taken down from the special cleaning rack by a flat plate cleaning machine to remove residual mixed acid liquor;

s10, inserting one end of the cleaned foldable glass product into a groove position of a positioning jig, wherein the depth of the groove position is less than half of the length of the foldable glass product;

s12, after the insertion is finished, the positioning jig is installed on the peripheral polishing machine, and the peripheral polishing machine is used for carrying out first physical end face polishing on the end face of the foldable glass product exposed out of the positioning jig;

s14, after polishing, taking the positioning jig down from the peripheral polishing machine, then taking the foldable glass product out of the groove position of the positioning jig, and inserting the other end of the foldable glass product into the groove position of the positioning jig;

and S16, after the insertion is finished, mounting the positioning jig on the peripheral polishing machine, and carrying out secondary physical end surface polishing on the end surface of the foldable glass product exposed out of the positioning jig through the peripheral polishing machine.

2. The end-face polishing process of a foldable glass product according to claim 1, wherein the mixed acid solution comprises 0.3-0.9% by weight of an etching solution, 0.35-1.05% by weight of nitric acid and 0.35-1.05% by weight of hydrochloric acid.

3. The end-face polishing process for a foldable glass product according to claim 2, wherein the etching solution is 0.6 wt%, the nitric acid is 0.7 wt%, and the hydrochloric acid is 0.7 wt%.

4. The end-face polishing process for foldable glass products of claim 1, wherein said acid mixture has a concentration of 2% and said soaking time is 22 minutes.

5. The foldable glass product end face polishing process of claim 1, wherein the step S8 specifically comprises the steps of:

s81, spraying alkaline cleaning agents on the front and the back of the foldable glass product taken down from the special cleaning frame through a spraying assembly of the flat plate cleaning machine, wherein the concentration of the alkaline cleaning agents is 3-5%;

s82, cleaning the front and the back of the foldable glass product sprayed with the alkaline cleaning agent through a brush component of the flat plate cleaning machine to remove residual mixed acid liquor;

s83, spraying pure water on the front and the back of the cleaned foldable glass product through a nozzle assembly of the flat plate cleaning machine so as to wash the foldable glass product;

s84, blowing air to the front and back of the washed foldable glass product through an air knife assembly of the flat plate washing machine to blow the foldable glass product for 10-15S;

s85, drying the dried foldable glass product by a drying component of the flat plate cleaning machine, wherein the drying temperature is 45-50 ℃, and the drying time is 50-70S.

6. The foldable glass product end face polishing process of claim 1, wherein the step S12 specifically comprises the steps of:

s121, mounting the positioning jig between two polishing wheels in a case of the peripheral polishing machine;

s122, point inspection of the concentration of the milled water of the peripheral polishing machine, wherein the concentration of the milled water is 2-3%;

s123, setting polishing parameters of the peripheral polishing machine, wherein the polishing parameters comprise the rotating speeds of the two polishing wheels, the rotating speed of the positioning jig, the polishing time and the lengths of polishing media on the two polishing wheels;

s124, starting a circulating water pump of the peripheral polishing machine, and injecting grinding water into the case to enable the foldable glass products on the two polishing wheels and the positioning jig to be completely soaked by the grinding water;

and S125, starting a driving system of the peripheral polishing machine to drive the two polishing wheels and the positioning jig to rotate through the driving system, so that the polishing media on the two polishing wheels and the end face of the foldable glass product exposed outside the positioning jig are in contact friction to generate grinding force, and thus, the first physical end face polishing is realized.

7. The foldable glass product end face polishing process of claim 1, wherein the step S16 specifically comprises the steps of:

s161, installing the positioning jig between two polishing wheels in a case of the peripheral polishing machine;

s162, point inspection of the concentration of milling water of the peripheral polishing machine, wherein the concentration of the milling water is 2-3%;

s163, setting polishing parameters of the peripheral polishing machine, wherein the polishing parameters comprise the rotating speeds of the two polishing wheels, the rotating speeds of the positioning jig, the polishing time and the lengths of polishing media on the two polishing wheels;

s164, starting a circulating water pump of the peripheral polishing machine, and injecting grinding water into the case to enable the foldable glass products on the two polishing wheels and the positioning jig to be completely soaked by the grinding water;

and S165, starting a driving system of the peripheral polishing machine to drive the two polishing wheels and the positioning jig to rotate through the driving system, so that the polishing media on the two polishing wheels and the end face of the foldable glass product exposed outside the positioning jig are in contact friction to generate grinding force, and the second physical end face polishing is realized.

8. The end face polishing process of a foldable glass product as claimed in claim 6, wherein the rotation speed of the two polishing wheels is 1300-1700r/min, the rotation speed of the positioning jig is 4-8r/min, the polishing time is 1800-2200s, the length of the polishing medium is not less than 15mm, and the polishing medium is pig hair, a polishing leather strip or a nylon wire.

9. The end face polishing process of a foldable glass product as claimed in claim 7, wherein the rotation speed of the two polishing wheels is 1300-1700r/min, the rotation speed of the positioning jig is 4-8r/min, the polishing time is 1800-2200s, the length of the polishing medium is not less than 20mm, and the polishing medium is pig hair, a polishing leather strip or a nylon thread.

10. The end-face polishing process for a foldable glass product according to claim 6 or 7, wherein said abrasive water comprises cerium oxide and pure water in a weight ratio of 1: 5.

Technical Field

The invention relates to an end face polishing process, in particular to an end face polishing process of a foldable glass product.

Background

With the development of the well-spraying type of the foldable flexible screen, products with foldable functions such as smart phones, intelligent wearable devices and tablet computers are more and more.

The substrate material of the foldable flexible screen is typically foldable glass. When the substrate of the foldable flexible screen is actually manufactured, a foldable glass product is usually obtained by performing CNC (computer numerical control) machining on the substrate according to the size of the substrate, microcracks, sand marks and the like are prone to appearing on four end faces (namely, other four faces except the front face and the back face) of the product after the CNC machining, the smoothness, the toughness and the strength of the surface of the product are reduced, and the folding times and the folding radius required by the foldable flexible screen cannot be achieved. Therefore, after CNC machining of the foldable glass product, it is generally necessary to perform end face polishing on the four end faces of the foldable glass product. At present, the four end faces of a foldable glass product are polished by a physical end face polishing process, and the physical end face polishing process has regional dead corners and incomplete polishing, so that the strength of the product is influenced.

Accordingly, there is a need for an improved end face polishing process for foldable glass products.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the end face polishing process for the foldable glass product, the polishing area has no dead angle, the polishing is thorough, the polishing efficiency is improved, and the strength of the foldable glass product is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a foldable glass product end face polishing process comprises the following steps: s2, inserting the foldable glass product processed by CNC into the inserting position of the special cleaning rack, wherein the front and the back of the foldable glass product are covered with protective plates; s4, placing the special cleaning rack inserted with the foldable glass product into a mixed acid solution with the concentration of 1-3% for soaking for 15-30 minutes, and carrying out chemical end face polishing on four end faces of the foldable glass product through the mixed acid solution; s6, after soaking, taking the special cleaning rack out of the mixed acid liquor, and taking down the foldable glass product on the special cleaning rack; s8, cleaning the foldable glass product taken down from the special cleaning rack by a flat plate cleaning machine to remove residual mixed acid liquor; s10, inserting one end of the cleaned foldable glass product into a groove position of a positioning jig, wherein the depth of the groove position is less than half of the length of the foldable glass product; s12, after the insertion is finished, the positioning jig is installed on the peripheral polishing machine, and the peripheral polishing machine is used for carrying out first physical end face polishing on the end face of the foldable glass product exposed out of the positioning jig; s14, after polishing, taking the positioning jig down from the peripheral polishing machine, then taking the foldable glass product out of the groove position of the positioning jig, and inserting the other end of the foldable glass product into the groove position of the positioning jig; and S16, after the insertion is finished, mounting the positioning jig on the peripheral polishing machine, and carrying out secondary physical end surface polishing on the end surface of the foldable glass product exposed out of the positioning jig through the peripheral polishing machine.

As a preferable technical scheme, the mixed acid solution comprises an etching solution, nitric acid and hydrochloric acid, wherein the weight percentage of the etching solution is 0.3-0.9%, the weight percentage of the nitric acid is 0.35-1.05%, and the weight percentage of the hydrochloric acid is 0.35-1.05%.

Preferably, the etching solution is 0.6 wt%, the nitric acid is 0.7 wt%, and the hydrochloric acid is 0.7 wt%.

According to a preferable technical scheme, the concentration of the mixed acid liquid is 2%, and the soaking time is 22 minutes.

As a preferred technical solution, the step S8 specifically includes the following steps: s81, spraying alkaline cleaning agents on the front and the back of the foldable glass product taken down from the special cleaning frame through a spraying assembly of the flat plate cleaning machine, wherein the concentration of the alkaline cleaning agents is 3-5%; s82, cleaning the front and the back of the foldable glass product sprayed with the alkaline cleaning agent through a brush component of the flat plate cleaning machine to remove residual mixed acid liquor; s83, spraying pure water on the front and the back of the cleaned foldable glass product through a nozzle assembly of the flat plate cleaning machine so as to wash the foldable glass product; s84, blowing air to the front and back of the washed foldable glass product through an air knife assembly of the flat plate washing machine to blow the foldable glass product for 10-15S; s85, drying the dried foldable glass product by a drying component of the flat plate cleaning machine, wherein the drying temperature is 45-50 ℃, and the drying time is 50-70S.

As a preferred technical solution, the step S12 specifically includes the following steps: s121, mounting the positioning jig between two polishing wheels in a case of the peripheral polishing machine; s122, point inspection of the concentration of the milled water of the peripheral polishing machine, wherein the concentration of the milled water is 2-3%; s123, setting polishing parameters of the peripheral polishing machine, wherein the polishing parameters comprise the rotating speeds of the two polishing wheels, the rotating speed of the positioning jig, the polishing time and the lengths of polishing media on the two polishing wheels; s124, starting a circulating water pump of the peripheral polishing machine, and injecting grinding water into the case to enable the foldable glass products on the two polishing wheels and the positioning jig to be completely soaked by the grinding water; and S125, starting a driving system of the peripheral polishing machine to drive the two polishing wheels and the positioning jig to rotate through the driving system, so that the polishing media on the two polishing wheels and the end face of the foldable glass product exposed outside the positioning jig are in contact friction to generate grinding force, and thus, the first physical end face polishing is realized.

As a preferred technical solution, the step S16 specifically includes the following steps: s161, installing the positioning jig between two polishing wheels in a case of the peripheral polishing machine; s162, point inspection of the concentration of milling water of the peripheral polishing machine, wherein the concentration of the milling water is 2-3%; s163, setting polishing parameters of the peripheral polishing machine, wherein the polishing parameters comprise the rotating speeds of the two polishing wheels, the rotating speeds of the positioning jig, the polishing time and the lengths of polishing media on the two polishing wheels; s164, starting a circulating water pump of the peripheral polishing machine, and injecting grinding water into the case to enable the foldable glass products on the two polishing wheels and the positioning jig to be completely soaked by the grinding water; and S165, starting a driving system of the peripheral polishing machine to drive the two polishing wheels and the positioning jig to rotate through the driving system, so that the polishing media on the two polishing wheels and the end face of the foldable glass product exposed outside the positioning jig are in contact friction to generate grinding force, and the second physical end face polishing is realized.

As a preferable technical scheme, the rotating speed of the two polishing wheels is 1300-1700r/min, the rotating speed of the positioning jig is 4-8r/min, the polishing time is 1800-2200s, the length of the polishing medium is more than or equal to 15mm, and the polishing medium is pig hair, a leather grinding strip or a nylon wire.

As a preferable technical scheme, the rotating speed of the two polishing wheels is 1300-1700r/min, the rotating speed of the positioning jig is 4-8r/min, the polishing time is 1800-2200s, the length of the polishing medium is more than or equal to 20mm, and the polishing medium is pig hair, a leather grinding strip or a nylon wire.

According to a preferable technical scheme, the grinding water comprises cerium oxide and pure water, and the weight ratio of the cerium oxide to the pure water is 1: 5.

The invention has the beneficial effects that: according to the invention, the four end faces of the foldable glass product are subjected to chemical end face polishing and physical end face polishing, so that a polishing area has no dead angle, the polishing is thorough, the polishing efficiency is improved, and the strength of the foldable glass product is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the foldable glass product of the present invention inserted into a dedicated washing rack;

FIG. 2 is a schematic view of the structure of the present invention in which the special washing rack with the foldable glass product inserted therein is immersed in a mixed acid solution;

FIG. 3 is a schematic structural view of the foldable glass product of the present invention inserted into the slot of the positioning fixture;

fig. 4 is a schematic structural diagram of two polishing wheels and a positioning fixture according to the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

First embodiment

The first embodiment of the invention provides a polishing process for an end face of a foldable glass product, which specifically comprises the following steps:

step S2, inserting the CNC-processed foldable glass product 100 into the plugging position of the special cleaning rack 10, as shown in fig. 1, the special cleaning rack 10 includes three upper support columns 12 and two lower support columns 14, the two lower support columns 14 are respectively located between the two adjacent upper support columns 12 and below the upper support columns 12, the periphery of the upper support columns 12 is provided with a first annular groove 122, and the periphery of the lower support columns 14 is provided with a second annular groove 142. The plugging position is composed of two first ring grooves 122 of two adjacent upper support columns 12 and a second ring groove 142 of a lower support column 14, and two ends of the foldable glass product 100 and one end adjacent to the two ends are respectively inserted into the two first ring grooves 122 of the two adjacent upper support columns 12 and the second ring groove 142 of the lower support column 14, namely, the foldable glass product 100 is inserted into the plugging position of the special cleaning rack 10. It will be appreciated that the number of upper support columns 12 and lower support columns 14 may be set as practical. The number of the first and second ring grooves 122, 142 can also be set according to practical situations.

Both the front and back sides of the foldable glass product 100 are covered with protective sheets that protect the front and back sides of the foldable glass product 100 from chemical reaction with the mixed acid solution 22 (see fig. 2) during chemical end polishing.

Step S4, the special washing rack 10 with the foldable glass product 100 inserted therein is placed in the mixed acid solution 22 with a concentration of 1% to be soaked for 15 minutes, as shown in fig. 2, so as to perform chemical end polishing on the four end faces of the foldable glass product 100 by the mixed acid solution 22. The chemical end polishing is performed by the chemical reaction between the four end faces of the foldable glass product 100 and the mixed acid solution 22, so that the uneven areas of the end faces are slowly dissolved and volatilized, and the smooth and bright polishing effect is achieved.

In this embodiment, the mixed acid solution 22 is contained in a container 20, and the mixed acid solution 22 includes an etching solution, nitric acid, and hydrochloric acid. The weight percentage of the etching solution is 0.3%, the weight percentage of the nitric acid is 0.35%, and the weight percentage of the hydrochloric acid is 0.35%.

Step S6, after soaking, taking the special cleaning rack 10 out of the mixed acid solution 22, and taking down the foldable glass product 100 on the special cleaning rack 10.

Step S8, the foldable glass product 100 taken off the special cleaning rack 10 is cleaned by a flat plate cleaning machine to remove the residual mixed acid solution.

Step S8 specifically includes the following steps:

s81, spraying an alkaline cleaner with a concentration of 3% onto the front and back surfaces of the foldable glass product 100 taken off the special cleaning rack 10 by the spray assembly of the flat plate cleaning machine. Alkaline cleaners such as soaps, laundry detergents, hand sanitizers, and the like. The spray assembly includes an upper spray header and a lower spray header.

S82, cleaning the front and back surfaces of the foldable glass product 100 sprayed with the alkaline cleaner through the brush assembly of the flat plate cleaning machine to remove the residual mixed acid solution. The cleaning purpose is achieved through the chemical reaction of the alkaline cleaning agent and the mixed acid liquid. The brush assembly comprises an upper brush and a lower brush.

And S83, spraying pure water on the front and the back of the cleaned foldable glass product 100 through the nozzle assembly of the flat plate cleaning machine to wash the foldable glass product 100 so as to remove the liquid generated by the chemical reaction of the alkaline cleaning agent and the mixed acid liquid. The spray group component comprises an upper nozzle and a lower nozzle. The upper water pressure of the upper nozzle was 0.8kg (kg), and the lower water pressure of the lower nozzle was 0.6 kg.

And S84, blowing air to the front and the back of the washed foldable glass product 100 through an air knife assembly of the flat plate washing machine so as to dry the foldable glass product 100, wherein the air blowing time is 10S (seconds). The air knife assembly comprises an upper air knife and a lower air knife.

S85, drying the dried foldable glass product 100 through a drying assembly of the flat plate cleaning machine, wherein the drying temperature is 45 ℃ and the drying time is 50S. The drying assembly comprises an upper drying mechanism and a lower drying mechanism.

Step S10, inserting one end of the cleaned foldable glass product 100 into the slot 32 of the positioning fixture 30, as shown in fig. 3. The depth of the slot 32 is less than half the length of the foldable glass product 100, ensuring that all four end faces of the foldable glass product 100 are polished to prevent leakage. The width of the slot 32 is matched with the width of the foldable glass product 100, so that the displacement phenomenon can not occur during physical end surface polishing, and the positioning precision is high.

Step S12, after the insertion is completed, the positioning jig 30 is mounted to the peripheral polishing machine, and the peripheral polishing machine performs a first physical end surface polishing on the end surface of the foldable glass product 100 exposed outside the positioning jig 30.

Step S12 specifically includes the following steps:

s121, installing the positioning jig 30 between two polishing wheels 40 in a machine box of the peripheral polishing machine, as shown in FIG. 4.

S122, point inspection of the concentration of the milling water of the peripheral polishing machine, wherein the concentration of the milling water is 2%. The grinding powder water is polishing liquid and comprises cerium oxide and pure water, and the weight ratio of the cerium oxide to the pure water is 1: 5.

And S123, setting polishing parameters of the peripheral polishing machine. The polishing parameters include the rotation speed of the two polishing wheels 40, the rotation speed of the positioning jig 30, the polishing time, and the length of the polishing medium 42 on the two polishing wheels 40. The rotating speed of the two polishing wheels 40 is 1300r/min, the rotating speed of the positioning jig 30 is 4-8r/min, the polishing time is 1800-2200s, the length of the polishing medium 42 is more than or equal to 15mm, and the polishing medium 42 is pig hair.

And S124, starting a circulating water pump of the peripheral polishing machine, and injecting the grinding water into the case, so that the two polishing wheels 40 and the foldable glass product 100 on the positioning jig 30 are completely soaked by the grinding water. The polishing powder water can play a role in lubrication and cooling, and the polishing efficiency is improved.

And S125, starting a driving system of the peripheral polishing machine to drive the two polishing wheels 40 and the positioning jig 30 to rotate through the driving system, so that the polishing media 42 on the two polishing wheels 40 are in contact friction with the end face of the foldable glass product 100 exposed out of the positioning jig 30 to generate grinding force, and thus, the first physical end face polishing is realized. The rotation directions of the two polishing wheels 40 are opposite, the rotation direction of the positioning jig 30 is the same as the rotation direction of one polishing wheel 40, and the arrows in fig. 4 indicate the rotation directions of the two polishing wheels 40 and the positioning jig 30.

Step S14, after polishing, taking the positioning jig 30 off the peripheral polishing machine, then taking the foldable glass product 100 out of the slot 32 of the positioning jig 30 and inserting the other end of the foldable glass product 100 into the slot 32 of the positioning jig 30, wherein the structure of the other end of the foldable glass product 100 inserted into the slot 32 of the positioning jig 30 is the same as that shown in fig. 3.

Step S16, after the insertion is completed, the positioning jig 30 is mounted to the peripheral polishing machine, and the peripheral polishing machine performs a second physical end surface polishing on the end surface of the foldable glass product 100 exposed outside the positioning jig 30.

Step S16 specifically includes the following steps: s161, installing the positioning jig 30 between two polishing wheels 40 in the machine box of the peripheral polishing machine, as shown in FIG. 4.

S162, point inspection of the concentration of the milling water of the peripheral polishing machine, wherein the concentration of the milling water is 2%. The grinding powder water is polishing liquid and comprises cerium oxide and pure water, and the weight ratio of the cerium oxide to the pure water is 1: 5.

And S163, setting polishing parameters of the peripheral polishing machine, wherein the polishing parameters comprise the rotating speeds of the two polishing wheels 40, the rotating speed of the positioning jig 30, the polishing time and the length of the polishing medium 42 on the two polishing wheels 40. The rotating speed of the two polishing wheels 40 is 1300r/min, the rotating speed of the positioning jig 30 is 4r/min, the polishing time is 1800s, the length of the polishing medium 42 is more than or equal to 20mm, and the polishing medium 42 is pig hair.

S164, starting a circulating water pump of the peripheral polishing machine, and injecting the grinding water into the case, so that the two polishing wheels 40 and the foldable glass product 100 on the positioning jig 30 are completely soaked by the grinding water. The polishing powder water can play a role in lubrication and cooling, and the polishing efficiency is improved.

And S165, starting a driving system of the peripheral polishing machine to drive the two polishing wheels 40 and the positioning jig 30 to rotate through the driving system, so that the polishing media 42 on the two polishing wheels 40 are in contact friction with the end face of the foldable glass product 100 exposed outside the positioning jig 30 to generate grinding force, and the second physical end face polishing is realized, so that the physical end face polishing of the foldable glass product 100 is completed. The rotation directions of the two polishing wheels 40 are opposite, the rotation direction of the positioning jig 30 is the same as the rotation direction of one polishing wheel 40, and the arrows in fig. 4 indicate the rotation directions of the two polishing wheels 40 and the positioning jig 30.

After step S16, the polished foldable glass product 100 is sliced, ultrasonically cleaned, inspected, and chemically tempered, and the foldable glass product 100 is completed.

According to the invention, by carrying out chemical end face polishing and physical end face polishing on the four end faces of the foldable glass product 100, the polishing area has no dead angle, the polishing is thorough, the polishing efficiency is improved, and the strength of the foldable glass product 100 is improved.

Second embodiment

The second embodiment of the invention provides a polishing process for the end face of a foldable glass product, which specifically comprises the following steps:

step S2, inserting the CNC-processed foldable glass product 100 into the plugging position of the special cleaning rack 10, as shown in fig. 1, the special cleaning rack 10 includes three upper support columns 12 and two lower support columns 14, the two lower support columns 14 are respectively located between the two adjacent upper support columns 12 and below the upper support columns 12, the periphery of the upper support columns 12 is provided with a first annular groove 122, and the periphery of the lower support columns 14 is provided with a second annular groove 142. The plugging position is composed of two first ring grooves 122 of two adjacent upper support columns 12 and a second ring groove 142 of a lower support column 14, and two ends of the foldable glass product 100 and one end adjacent to the two ends are respectively inserted into the two first ring grooves 122 of the two adjacent upper support columns 12 and the second ring groove 142 of the lower support column 14, namely, the foldable glass product 100 is inserted into the plugging position of the special cleaning rack 10. It will be appreciated that the number of upper support columns 12 and lower support columns 14 may be set as practical. The number of the first and second ring grooves 122, 142 can also be set according to practical situations.

Both the front and back sides of the foldable glass product 100 are covered with protective sheets that protect the front and back sides of the foldable glass product 100 from chemical reaction with the mixed acid solution 22 (see fig. 2) during chemical end polishing.

Step S4, the special washing rack 10 with the foldable glass product 100 inserted therein is placed in the mixed acid solution 22 with a concentration of 2% to be soaked for 22 minutes, as shown in fig. 2, so as to perform chemical end polishing on the four end faces of the foldable glass product 100 by the mixed acid solution 22. The chemical end polishing is performed by causing chemical reactions between the four end faces of the foldable glass product 100 and the mixed acid solution 22 to slowly dissolve and volatilize the uneven areas of the end faces, thereby achieving a smooth polishing effect. By chemically polishing the four end faces of the foldable glass product 100, the polishing area has no dead angle, the polishing efficiency is improved, and the strength of the foldable glass product 100 is improved.

In this embodiment, the mixed acid solution 22 is contained in a container 20, and the mixed acid solution 22 includes an etching solution, nitric acid, and hydrochloric acid. The weight percentage of the etching solution is 0.6%, the weight percentage of the nitric acid is 0.7%, and the weight percentage of the hydrochloric acid is 0.7%.

Step S6, after soaking, taking the special cleaning rack 10 out of the mixed acid solution 22, and taking down the foldable glass product 100 on the special cleaning rack 10.

Step S8, the foldable glass product 100 taken off the special cleaning rack 10 is cleaned by a flat plate cleaning machine to remove the residual mixed acid solution.

Step S8 specifically includes the following steps:

s81, spraying an alkaline cleaner with a concentration of 4% onto the front and back surfaces of the foldable glass product 100 taken off the special cleaning rack 10 by the spray assembly of the flat plate cleaning machine. Alkaline cleaners such as soaps, laundry detergents, hand sanitizers, and the like. The spray assembly includes an upper spray header and a lower spray header.

S82, cleaning the front and back surfaces of the foldable glass product 100 sprayed with the alkaline cleaner through the brush assembly of the flat plate cleaning machine to remove the residual mixed acid solution. The cleaning purpose is achieved through the chemical reaction of the alkaline cleaning agent and the mixed acid liquid. The brush assembly comprises an upper brush and a lower brush.

S83, spraying pure water on the front and back surfaces of the cleaned foldable glass product 100 through the nozzle assembly of the flat plate cleaning machine to wash the foldable glass product 100 to remove the liquid generated by the chemical reaction between the alkaline cleaner and the mixed acid solution 22. The spray group component comprises an upper nozzle and a lower nozzle. The upper water pressure of the upper nozzle was 0.9kg, and the lower water pressure of the lower nozzle was 0.7 kg.

And S84, blowing air to the front and the back of the washed foldable glass product 100 through the air knife assembly of the flat plate washing machine so as to dry the foldable glass product 100, wherein the air blowing time is 12.5S (seconds). The air knife assembly comprises an upper air knife and a lower air knife.

S85, drying the dried foldable glass product 100 through a drying assembly of the flat plate cleaning machine, wherein the drying temperature is 47.5 ℃, and the drying time is 60S. The drying assembly comprises an upper drying mechanism and a lower drying mechanism.

Step S10, inserting one end of the cleaned foldable glass product 100 into the slot 32 of the positioning fixture 30, as shown in fig. 3. The depth of the slot 32 is less than half the length of the foldable glass product 100, ensuring that all four end faces of the foldable glass product 100 are polished to prevent leakage. The width of the slot 32 is matched with the width of the foldable glass product 100, so that the displacement phenomenon can not occur during physical end surface polishing, and the positioning precision is high.

Step S12, after the insertion is completed, the positioning jig 30 is mounted to the peripheral polishing machine, and the peripheral polishing machine performs a first physical end surface polishing on the end surface of the foldable glass product 100 exposed outside the positioning jig 30.

Step S12 specifically includes the following steps:

s121, installing the positioning jig 30 between two polishing wheels 40 in a machine box of the peripheral polishing machine, as shown in FIG. 4.

S122, point inspection of the concentration of the milling water of the peripheral polishing machine, wherein the concentration of the milling water is 2.5%. The grinding powder water is polishing liquid and comprises cerium oxide and pure water, and the weight ratio of the cerium oxide to the pure water is 1: 5.

And S123, setting polishing parameters of the peripheral polishing machine. The polishing parameters include the rotation speed of the two polishing wheels 40, the rotation speed of the positioning jig 30, the polishing time, and the length of the polishing medium 42 on the two polishing wheels 40. The rotating speed of the two polishing wheels 40 is 1450r/min (revolutions per minute), the rotating speed of the positioning jig 30 is 5r/min, the polishing time is 2000s, the length of the polishing medium 42 is more than or equal to 15mm (millimeters), and the polishing medium 42 is a leather strip.

And S124, starting a circulating water pump of the peripheral polishing machine, and injecting the grinding water into the case, so that the two polishing wheels 40 and the foldable glass product 100 on the positioning jig 30 are completely soaked by the grinding water. The polishing powder water can play a role in lubrication and cooling, and the polishing efficiency is improved.

And S125, starting a driving system of the peripheral polishing machine to drive the two polishing wheels 40 and the positioning jig 30 to rotate through the driving system, so that the polishing media 42 on the two polishing wheels 40 are in contact friction with the end face of the foldable glass product 100 exposed out of the positioning jig 30 to generate grinding force, and thus, the first physical end face polishing is realized. The rotation directions of the two polishing wheels 40 are opposite, the rotation direction of the positioning jig 30 is the same as the rotation direction of one polishing wheel 40, and the arrows in fig. 4 indicate the rotation directions of the two polishing wheels 40 and the positioning jig 30.

Step S14, after polishing, taking the positioning jig 30 off the peripheral polishing machine, then taking the foldable glass product 100 out of the slot 32 of the positioning jig 30 and inserting the other end of the foldable glass product 100 into the slot 32 of the positioning jig 30, wherein the structure of the other end of the foldable glass product 100 inserted into the slot 32 of the positioning jig 30 is the same as that shown in fig. 3.

Step S16, after the insertion is completed, the positioning jig 30 is mounted to the peripheral polishing machine, and the peripheral polishing machine performs a second physical end surface polishing on the end surface of the foldable glass product 100 exposed outside the positioning jig 30.

Step S16 specifically includes the following steps: s161, installing the positioning jig 30 between two polishing wheels 40 in the machine box of the peripheral polishing machine, as shown in FIG. 4.

S162, point inspection of the concentration of the milling water of the peripheral polishing machine, wherein the concentration of the milling water is 2.5%. The grinding powder water is polishing liquid and comprises cerium oxide and pure water, and the weight ratio of the cerium oxide to the pure water is 1: 5.

And S163, setting polishing parameters of the peripheral polishing machine, wherein the polishing parameters comprise the rotating speeds of the two polishing wheels 40, the rotating speed of the positioning jig 30, the polishing time and the length of the polishing medium 42 on the two polishing wheels 40. The rotating speed of the two polishing wheels 40 is 1450r/min, the rotating speed of the positioning jig 30 is 5r/min, the polishing time is 2000s, the length of the polishing medium 42 is more than or equal to 20mm, and the polishing medium 42 is a leather grinding strip.

S164, starting a circulating water pump of the peripheral polishing machine, and injecting the grinding water into the case, so that the two polishing wheels 40 and the foldable glass product 100 on the positioning jig 30 are completely soaked by the grinding water. The polishing powder water can play a role in lubrication and cooling, and the polishing efficiency is improved.

And S165, starting a driving system of the peripheral polishing machine to drive the two polishing wheels 40 and the positioning jig 30 to rotate through the driving system, so that the polishing media 42 on the two polishing wheels 40 are in contact friction with the end face of the foldable glass product 100 exposed outside the positioning jig 30 to generate grinding force, and the second physical end face polishing is realized, so that the physical end face polishing of the foldable glass product 100 is completed. The rotation directions of the two polishing wheels 40 are opposite, the rotation direction of the positioning jig 30 is the same as the rotation direction of one polishing wheel 40, and the arrows in fig. 4 indicate the rotation directions of the two polishing wheels 40 and the positioning jig 30.

After step S16, the polished foldable glass product 100 is sliced, ultrasonically cleaned, inspected, and chemically tempered, and the foldable glass product 100 is completed.

According to the invention, by carrying out chemical end face polishing and physical end face polishing on the four end faces of the foldable glass product 100, the polishing area has no dead angle, the polishing is thorough, the polishing efficiency is improved, and the strength of the foldable glass product 100 is improved.

Third embodiment

The third embodiment of the invention provides a polishing process for the end face of a foldable glass product, which specifically comprises the following steps:

step S2, inserting the CNC-processed foldable glass product 100 into the plugging position of the special cleaning rack 10, as shown in fig. 1, the special cleaning rack 10 includes three upper support columns 12 and two lower support columns 14, the two lower support columns 14 are respectively located between the two adjacent upper support columns 12 and below the upper support columns 12, the periphery of the upper support columns 12 is provided with a first annular groove 122, and the periphery of the lower support columns 14 is provided with a second annular groove 142. The plugging position is composed of two first ring grooves 122 of two adjacent upper support columns 12 and a second ring groove 142 of a lower support column 14, and two ends of the foldable glass product 100 and one end adjacent to the two ends are respectively inserted into the two first ring grooves 122 of the two adjacent upper support columns 12 and the second ring groove 142 of the lower support column 14, namely, the foldable glass product 100 is inserted into the plugging position of the special cleaning rack 10. It will be appreciated that the number of upper support columns 12 and lower support columns 14 may be set as practical. The number of the first and second ring grooves 122, 142 can also be set according to practical situations.

Both the front and back sides of the foldable glass product 100 are covered with protective sheets that protect the front and back sides of the foldable glass product 100 from chemical reaction with the mixed acid solution 22 (see fig. 2) during chemical end polishing.

Step S4, the special washing rack 10 with the foldable glass product 100 inserted therein is placed in the mixed acid solution 22 with a concentration of 3% to be soaked for 30 minutes, as shown in fig. 2, so as to perform chemical end polishing on the four end faces of the foldable glass product 100 by the mixed acid solution 22. The chemical end polishing is performed by causing chemical reactions between the four end faces of the foldable glass product 100 and the mixed acid solution 22 to slowly dissolve and volatilize the uneven areas of the end faces, thereby achieving a smooth polishing effect. By chemically polishing the four end faces of the foldable glass product 100, the polishing area has no dead angle, the polishing efficiency is improved, and the strength of the foldable glass product 100 is improved.

In this embodiment, the mixed acid solution 22 is contained in a container 20, and the mixed acid solution 22 includes an etching solution, nitric acid, and hydrochloric acid. The weight percentage of the etching solution is 0.9%, the weight percentage of the nitric acid is 1.05%, and the weight percentage of the hydrochloric acid is 1.05%.

Step S6, after soaking, taking the special cleaning rack 10 out of the mixed acid solution 22, and taking down the foldable glass product 100 on the special cleaning rack 10.

Step S8, the foldable glass product 100 taken off the special washing rack 10 is washed by a flat plate washer to remove the residual mixed acid solution 22.

Step S8 specifically includes the following steps:

s81, spraying alkaline cleaner with concentration of 5% on the front and back of the foldable glass product 100 taken from the special cleaning rack 10 by the spray assembly of the flat plate cleaning machine. Alkaline cleaners such as soaps, laundry detergents, hand sanitizers, and the like. The spray assembly includes an upper spray header and a lower spray header.

S82, cleaning the front and back surfaces of the foldable glass product 100 sprayed with the alkaline cleaner by the brush assembly of the flat plate cleaning machine to remove the residual mixed acid solution 22. The cleaning purpose is achieved by the chemical reaction of the alkaline cleaner and the mixed acid liquor 22. The brush assembly comprises an upper brush and a lower brush.

S83, spraying pure water on the front and back surfaces of the cleaned foldable glass product 100 through the nozzle assembly of the flat plate cleaning machine to wash the foldable glass product 100 to remove the liquid generated by the chemical reaction between the alkaline cleaner and the mixed acid solution 22. The spray group component comprises an upper nozzle and a lower nozzle. The upper water pressure of the upper nozzle was 1kg, and the lower water pressure of the lower nozzle was 0.8 kg.

And S84, blowing air to the front and the back of the washed foldable glass product 100 through an air knife assembly of the flat plate washing machine so as to dry the foldable glass product 100, wherein the air blowing time is 15S (seconds). The air knife assembly comprises an upper air knife and a lower air knife.

S85, drying the dried foldable glass product 100 through a drying assembly of the flat plate cleaning machine, wherein the drying temperature is 50 ℃, and the drying time is 70S. The drying assembly comprises an upper drying mechanism and a lower drying mechanism.

Step S10, inserting one end of the cleaned foldable glass product 100 into the slot 32 of the positioning fixture 30, as shown in fig. 3. The depth of the slot 32 is less than half the length of the foldable glass product 100, ensuring that all four end faces of the foldable glass product 100 are polished to prevent leakage. The width of the slot 32 is matched with the width of the foldable glass product 100, so that the displacement phenomenon can not occur during physical end surface polishing, and the positioning precision is high.

Step S12, after the insertion is completed, the positioning jig 30 is mounted to the peripheral polishing machine, and the peripheral polishing machine performs a first physical end surface polishing on the end surface of the foldable glass product 100 exposed outside the positioning jig 30.

Step S12 specifically includes the following steps:

s121, installing the positioning jig 30 between two polishing wheels 40 in a machine box of the peripheral polishing machine, as shown in FIG. 4.

S122, point inspection of the concentration of the milling water of the peripheral polishing machine, wherein the concentration of the milling water is 3%. The grinding powder water is polishing liquid and comprises cerium oxide and pure water, and the weight ratio of the cerium oxide to the pure water is 1: 5.

And S123, setting polishing parameters of the peripheral polishing machine. The polishing parameters include the rotation speed of the two polishing wheels 40, the rotation speed of the positioning jig 30, the polishing time, and the length of the polishing medium 42 on the two polishing wheels 40. The rotating speed of the two polishing wheels 40 is 1700r/min (revolutions per minute), the rotating speed of the positioning jig 30 is 8r/min, the polishing time is 2200s, the length of the polishing medium 42 is more than or equal to 15mm (millimeters), and the polishing medium 42 is nylon thread.

And S124, starting a circulating water pump of the peripheral polishing machine, and injecting the grinding water into the case, so that the two polishing wheels 40 and the foldable glass product 100 on the positioning jig 30 are completely soaked by the grinding water. The polishing powder water can play a role in lubrication and cooling, and the polishing efficiency is improved.

And S125, starting a driving system of the peripheral polishing machine to drive the two polishing wheels 40 and the positioning jig 30 to rotate through the driving system, so that the polishing media 42 on the two polishing wheels 40 are in contact friction with the end face of the foldable glass product 100 exposed out of the positioning jig 30 to generate grinding force, and thus, the first physical end face polishing is realized. The rotation directions of the two polishing wheels 40 are opposite, the rotation direction of the positioning jig 30 is the same as the rotation direction of one polishing wheel 40, and the arrows in fig. 4 indicate the rotation directions of the two polishing wheels 40 and the positioning jig 30.

Step S14, after polishing, taking the positioning jig 30 off the peripheral polishing machine, then taking the foldable glass product 100 out of the slot 32 of the positioning jig 30 and inserting the other end of the foldable glass product 100 into the slot 32 of the positioning jig 30, wherein the structure of the other end of the foldable glass product 100 inserted into the slot 32 of the positioning jig 30 is the same as that shown in fig. 3.

Step S16, after the insertion is completed, the positioning jig 30 is mounted to the peripheral polishing machine, and the peripheral polishing machine performs a second physical end surface polishing on the end surface of the foldable glass product 100 exposed outside the positioning jig 30.

Step S16 specifically includes the following steps: s161, installing the positioning jig 30 between two polishing wheels 40 in the machine box of the peripheral polishing machine, as shown in FIG. 4.

S162, point inspection of the concentration of the milling water of the peripheral polishing machine, wherein the concentration of the milling water is 3%. The grinding powder water is polishing liquid and comprises cerium oxide and pure water, and the weight ratio of the cerium oxide to the pure water is 1: 5.

And S163, setting polishing parameters of the peripheral polishing machine, wherein the polishing parameters comprise the rotating speeds of the two polishing wheels 40, the rotating speed of the positioning jig 30, the polishing time and the length of the polishing medium 42 on the two polishing wheels 40. The rotating speed of the two polishing wheels 40 is 1700r/min, the rotating speed of the positioning jig 30 is 8r/min, the polishing time is 2200s, the length of the polishing medium 42 is more than or equal to 20mm, and the polishing medium 42 is nylon thread.

S164, starting a circulating water pump of the peripheral polishing machine, and injecting the grinding water into the case, so that the two polishing wheels 40 and the foldable glass product 100 on the positioning jig 30 are completely soaked by the grinding water. The polishing powder water can play a role in lubrication and cooling, and the polishing efficiency is improved.

And S165, starting a driving system of the peripheral polishing machine to drive the two polishing wheels 40 and the positioning jig 30 to rotate through the driving system, so that the polishing media 42 on the two polishing wheels 40 are in contact friction with the end face of the foldable glass product 100 exposed outside the positioning jig 30 to generate grinding force, and the second physical end face polishing is realized, so that the physical end face polishing of the foldable glass product 100 is completed. The rotation directions of the two polishing wheels 40 are opposite, the rotation direction of the positioning jig 30 is the same as the rotation direction of one polishing wheel 40, and the arrows in fig. 4 indicate the rotation directions of the two polishing wheels 40 and the positioning jig 30.

After step S16, the polished foldable glass product 100 is sliced, ultrasonically cleaned, inspected, and chemically tempered, and the foldable glass product 100 is completed.

According to the invention, by carrying out chemical end face polishing and physical end face polishing on the four end faces of the foldable glass product 100, the polishing area has no dead angle, the polishing is thorough, the polishing efficiency is improved, and the strength of the foldable glass product 100 is improved.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.