CN108668483B

CN108668483B - Float forming equipment and method for shell

Info

Publication number: CN108668483B
Application number: CN201810527541.8A
Authority: CN
Inventors: 杨浪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-05-29
Filing date: 2018-05-29
Publication date: 2020-06-23
Anticipated expiration: 2038-05-29
Also published as: CN108668483A

Abstract

The utility model relates to a float forming equipment and method of casing, the float forming equipment of casing, including shaping groove and brace table, the shaping groove includes tank bottom and cell wall, brace table and tank bottom interval set up to form the stock solution runner between brace table and tank bottom, one side that the tank bottom was kept away from to the brace table is including bellying and the depressed part that sets up in turn, just be equipped with the supply runner on the bellying, the supply runner with the stock solution runner intercommunication, in one side that the tank bottom was kept away from to the brace table forms the uneven liquid level of height. The float forming equipment of the shell can manufacture glass with one plane and one uneven surface. The scale of the production line of the float forming method is not limited by the forming method, and the energy consumption of unit products is low; the utilization rate of the finished product is high; scientific management is easy, full-line mechanization and automation are realized, and the labor productivity is high; the continuous operation period can be as long as several years, which is beneficial to stable production.

Description

Float forming equipment and method for shell

Technical Field

The present disclosure relates to electronic devices, and particularly to a float forming apparatus and method for a housing.

Background

In order to improve the aesthetic feeling and hand feeling of the mobile phones, more and more mobile phones adopt a glass rear shell integrally formed with a middle frame to assemble the mobile phones. At present, the stereoscopic impression of the mobile phone shell directly obtained by hot bending of plate glass is not strong.

Disclosure of Invention

One technical problem solved by one embodiment of the present application is how to provide a housing with good three-dimensional effect and attractive appearance, a float forming method of the housing, and an electronic device having the housing.

The utility model provides a float forming equipment of casing, includes shaping groove and brace table, the shaping groove includes tank bottom and cell wall, brace table and tank bottom interval set up to form the stock solution runner between brace table and tank bottom, one side that the tank bottom was kept away from to the brace table is including bellying and the depressed part that sets up in turn, just be equipped with the supply runner on the bellying, the supply runner with the stock solution runner intercommunication, with one side that the tank bottom was kept away from to the brace table forms the liquid level of unevenness.

The float forming equipment of the shell can manufacture glass with one plane and one uneven surface. The scale of the production line of the float forming method is not limited by the forming method, and the energy consumption of unit products is low; the utilization rate of the finished product is high; scientific management is easy, full-line mechanization and automation are realized, and the labor productivity is high; the continuous operation period can be as long as several years, which is beneficial to stable production.

In one embodiment, a supply flow passage is also arranged on the concave part, and the supply flow passage on the concave part is communicated with the liquid storage flow passage.

In one embodiment, a supercharging device is arranged on the supply flow passage.

In one embodiment, the device further comprises a control system for controlling the pressurizing device, and the control system enables the thickness of the liquid surface to the side, far away from the bottom of the groove, of the support platform to be uniform by adjusting the pressurizing device.

In one embodiment, the forming groove comprises an inlet end and an outlet end, the molten glass enters from the inlet end and flows out from the outlet end, and a gap is formed between the support table and the groove wall of the outlet end.

In one embodiment, the liquid level comprises a convex surface corresponding to the convex part, a concave surface corresponding to the concave part and a transition surface connected between the convex surface and the concave surface, the width of the concave surface is 7 mm-20 mm, and the width of the convex surface is 40 mm-80 mm.

In one embodiment, the height difference between the convex part and the concave part is 8.5 mm-20 mm.

A float forming method of a housing, comprising the steps of:

step a, a forming groove and a supporting table are arranged, the forming groove comprises a groove bottom and a groove wall, the supporting table and the groove bottom are arranged at intervals so as to form a liquid storage flow channel between the supporting table and the groove bottom, one side, far away from the groove bottom, of the supporting table comprises protruding parts and recessed parts which are alternately arranged, a supply flow channel is arranged on each protruding part, and the supply flow channel is communicated with the liquid storage flow channel;

b, introducing a forming liquid into a forming groove, and enabling the forming liquid to form a rugged liquid surface on one side of the support table away from the groove bottom, wherein the liquid surface comprises a convex surface corresponding to the convex part, a concave surface corresponding to the concave part and a transition surface connected between the convex surface and the concave surface;

c, enabling the molten glass to enter a forming groove and flow on the liquid surface to form glass with a thin part and a thick part, wherein the thin part is correspondingly formed at a convex surface, and the thick part is correspondingly formed at a concave surface;

and d, processing the glass obtained in the step c to obtain a shell comprising a main body part and a side wall part, wherein the thin part is processed to be the main body part, the thick part is processed to be the side wall part, and the thickness of the side wall part is larger than that of the main body part.

The float forming method of the shell adopts a float forming mode to form the shell with the U-shaped section and the large side wall thickness, and the shell with the side wall part with the thickness larger than that of the main body part is formed by combining a small amount of CNC auxiliary machining after forming. The shell is of an integral structure, has no seam, is glittering and translucent in appearance and has good visual effect. The thickness of the side wall part is larger than that of the main body part, namely, the thickness difference exists between the side wall part and the main body part, so that the stereoscopic impression of the shell is strong, and the aesthetic feeling and the hand feeling of the shell are improved. The scale of the production line of the float forming method is not limited by the forming method, and the energy consumption of unit products is low; the utilization rate of the finished product is high; scientific management is easy, full-line mechanization and automation are realized, and the labor productivity is high; the continuous operation period can be as long as several years, which is beneficial to stable production.

A case is manufactured according to a float molding method of the case, and side wall portions are extended from edges of a main body portion and are symmetrically disposed at both sides of the main body portion.

Above-mentioned casing, lateral wall portion and main part constitution are uncovered box-like, and electronic device is like display screen, mainboard, the battery lamp part in the cell-phone and all places in the casing, need not to set up the center alone again. The shell is of an integral structure, has no seam, is glittering and translucent in appearance and has good visual effect. The thickness of the side wall part is larger than that of the main body part, namely, the thickness difference exists between the side wall part and the main body part, so that the stereoscopic impression of the shell is strong, and the aesthetic feeling and the hand feeling of the shell are improved.

In one embodiment, any one of the following schemes is further included:

the thickness of the main body part is 0.6 mm-1.0 mm;

the thickness of the side wall part is 1.5 mm-3.5 mm;

the main body part and the side wall part are vertical or form an obtuse angle;

a smooth transition between the main body portion and the sidewall portion;

the main body part is in a flat plate shape or an arc curved surface shape.

Decorative layers are arranged on the inner surfaces of the main body part and the side wall part.

The electronic device comprises a display screen assembly and a shell, wherein the display screen assembly and the shell are matched to cover a space surrounded by a main body part and a side wall part.

The rear shell of the electronic device is the shell, the display screen assembly is connected with the shell and covers the inner cavity of the shell, and the shell replaces the rear cover plate and the middle frame, so that the electronic device is simple in structure and easy to assemble.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic rear view of an electronic device according to an embodiment;

FIG. 2 is a three-dimensional schematic view of a housing of the back of the electronic device shown in FIG. 1;

FIG. 3 is a schematic sectional view taken along line A-A of the electronic device shown in FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along line A-A of the electronic device of FIG. 1 with the display screen assembly removed;

FIG. 5 is a schematic sectional view taken along line A-A of FIG. 1 with the display screen assembly removed in accordance with another embodiment;

FIG. 6 is a schematic sectional view taken along line A-A of FIG. 1 with the display screen assembly removed in accordance with yet another embodiment;

FIG. 7 is a schematic sectional view taken along line A-A of FIG. 1 with the display screen assembly removed in accordance with yet another embodiment;

FIG. 8 is a transverse cross-section of a float formed forming trough wherein the portion of the oblique profile is glass;

FIG. 9 is a top view of a forming trough for float forming, wherein the direction of the arrows is the direction of movement of molten glass in the forming trough;

FIG. 10 is a transverse cross-section of a float formed forming trough in another embodiment wherein the portion of the oblique profile is glass;

FIG. 11 is a transverse cross section of a float formed forming trough in yet another embodiment, wherein the portion of the oblique cross section is glass.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As used herein, "electronic device" includes, but is not limited to, a device that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another electronic device). Examples of electronic devices include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver.

Referring to fig. 1 to 3, in an embodiment, the electronic device 10 is a mobile phone, and the electronic device 10 includes a housing 100 and a display screen assembly 200, where the housing 100 serves as a rear case of the electronic device 10. In other alternative embodiments, the housing 100 may be a cover plate of the display screen assembly 200 in the electronic device 10. In the following description, the case 100 is described as an example of a rear case of a cellular phone.

In one embodiment, the housing 100 is formed of glass or optical ceramic and includes a main body portion 110 and a sidewall portion 120. The sidewall portions 120 are extended from the edge of the main body portion 110, and are symmetrically disposed at both sides or ends of the main body portion 110, so that the housing 100 has an open box shape. The thickness of the sidewall part 120 is greater than that of the main body part 110.

Specifically, as shown in fig. 4, the main body 110 includes an outer plate 111 and an inner plate 112. The side wall portion 120 includes an outer wall surface 121 and an inner wall surface 122. The outer wall surface 121 is connected to the outer panel surface 111, and the inner wall surface 122 is connected to the inner panel surface 112. The outer plate surface 111 and the outer wall surface 121 form an outer surface of the casing 100, and the inner plate surface 112 and the inner wall surface 122 form an inner surface of the casing 100.

As shown in fig. 4, in one embodiment, there is a smooth transition between the body portion 110 and the sidewall portion 120. It is understood that there is a smooth transition between the inner panel surface 112 and the inner wall surface 122, and/or a smooth transition between the outer wall surface 121 and the outer panel surface 111. Therefore, edges and corners of the main body 110 can be avoided, and the smoothness of the corners of the side wall 120 and the main body 110 can be ensured, so that the side wall 120 and the main body 110 have better visual effects when the housing 100 is viewed from the outside to the inside, and the hand feeling of a user is improved.

As shown in fig. 4, in one embodiment, the main body portion 110 and the sidewall portion 120 are perpendicular to each other. It is understood that the outer wall surface 121 is perpendicular to the outer panel surface 111, but there is no limitation between the inner panel surface 112 and the inner wall surface 122, i.e., the inner panel surface 112 and the inner wall surface 122 may be perpendicular or at an obtuse angle. As shown in fig. 5, in another embodiment, the main body portion 110 and the sidewall portion 120 form an obtuse angle therebetween. It is understood that the outer wall surface 121 and the outer plate surface 111 form an obtuse angle therebetween, but there is no limitation to the inner plate surface 112 and the inner wall surface 122, i.e., the inner plate surface 112 and the inner wall surface 122 may form an obtuse angle therebetween.

As shown in fig. 4, in one embodiment, the main body 110 has a flat plate shape. In another embodiment, as shown in fig. 6, the main body 110 has an arc-shaped curved surface, that is, the outer panel 111 has an arc-shaped curved surface, the inner panel 112 has the same shape as the outer panel 111, and the outer panel 111 is parallel to the inner panel 112. In other embodiments, the main body 110 is curved, and it is also understood that the outer panel 111 is curved and the inner panel 112 is flat, such that the main body 110 has a maximum thickness at the longitudinal center axis and a minimum thickness at both sides. The arc-shaped outer plate surface 111 of the main body 110 and the smoothly-transitioned corners at the two sides of the casing 100 together make the entire upper surface of the casing 100 be a curved surface shape, so that the whole casing is smooth, and the casing 100 has a more beautiful appearance and better hand feeling.

As shown in fig. 4, in one embodiment, the outer wall surface 121 of the sidewall 120 is a plane, and the thickness of the sidewall 120 is uniform. In another embodiment, as shown in fig. 7, the outer wall surface 121 is a curved surface, so that the entire space between the outer wall surface 121 and the outer plate surface 111 is smooth, and the outer shape of the casing 100 is more beautiful and has better feel. The thickness of the side wall part 120 gradually increases from the main body part 110 to the end part of the side wall part 120, so that the thickness difference between the main body part 110 and the side wall part 120 is increased, the stereoscopic impression of the casing 100 is increased, and the aesthetic feeling of the casing 100 is improved.

The following description will be given taking a case where the main body 110 is a single rectangular plate glass. The sidewall portions 120 may be located at two opposite long sides of the main body portion 110, or at two opposite short sides of the main body portion 110, so as to realize an open box-shaped structure of the housing 100. The display panel assembly 200 is a structure that is coupled to the housing 100, and if the sidewall portions 120 are located at two opposite long sides of the main body portion 110, two short sides of the display panel assembly 200 are provided with bending structures, so that the display panel assembly 200 and the housing 100 form a sealed box-shaped structure together; if the sidewall portions 120 are located at two opposite short sides of the main body portion 110, two long sides of the display panel assembly 200 are provided with a bent structure, so that the display panel assembly 200 and the housing 100 form a sealed box-shaped structure.

By providing the sidewall 120 to make the casing 100 in an open box shape, when the mobile phone is assembled by using the casing 100, the battery (not shown), the main board (not shown), the display assembly 200, and other components of the mobile phone can be placed in the open box-shaped structure of the casing 100, without separately providing a middle frame. The distance H between one end of the side wall 120 away from the main body 110 and the main body 110 in a direction perpendicular to the main body 110 is 3.5mm to 8.5 mm. The H represents the depth of the case 100 having an open box structure, and the case 100 has a suitable depth, thereby ensuring that the battery, the main board, the display screen assembly 200, and other components of the mobile phone can be accommodated. Wherein the display panel assembly 200 is smoothly abutted with the sidewall 120 of the housing 100.

As shown in fig. 4 to 7, the thickness of the side wall part 120 is greater than that of the main body part 110. Compared with the case 100 with the same thickness, namely, the thickness of the sidewall 120 of the case 100 is equal to the thickness of the main body 110, the shape of the case 100 in the present application can be relatively more abundant, and has a higher identification degree. The thickness L2 of the main body 110 may be in the range of 0.6mm to 1.0mm, and the thickness L1 of the side wall 120 may be in the range of 1.5mm to 3.5 mm. It is understood that the thickness of the sidewall portion 120 refers to the overall thickness of the sidewall portion 120, and may be, for example, the average thickness of the sidewall portion 120. The thickness of the sidewall 120 may be different or the same. As shown in fig. 4, the thickness of the sidewall portion 120 is uniform; as shown in fig. 7, the thickness of the side wall part 120 may gradually increase in a direction away from the main body part 110. In the present application, the variation of the thickness of the sidewall 120 is not particularly limited.

The thickness of the sidewall 120 is relatively thick, and a structure matching with the motherboard and the display screen assembly 200 can be disposed on the inner side of the sidewall 120, so that the motherboard and the display screen assembly 200 can be directly mounted on the sidewall 120, and the structure of the mobile phone is simpler. Moreover, the thicker sidewall 120 facilitates the configuration of various shapes, such as different shapes of the sidewall 120 in fig. 4 and 7. The thickness of the body portion 110 is very thin and the main area on the housing 100 is the body portion 110, which makes the housing 100 relatively light in weight and fast in heat dissipation.

The inner surface of the case 100 is covered with a decorative layer. In one embodiment, a film may be formed on the inner surface of the casing 100 as a decoration layer by evaporation, and in other alternative embodiments, an ink may be sprayed on the inner surface of the casing 100, or a film may be adhered on the inner surface of the casing 100 to form a decoration layer. If the decoration layer is black, the inner structure of the mobile phone can be prevented from being seen through the casing 100, and the sidewall 120 and the main body 110 can be integrated into a single visual effect. Certainly, the decorative layer can also be provided with patterns to enhance the aesthetic property of the mobile phone rear shell.

As shown in fig. 1 and fig. 3, in an embodiment, the present application further provides an electronic device 10, a rear case of the electronic device 10 is the housing 100, the display panel assembly 200 is connected to the side wall portion 120 of the housing 100 and an edge of the main body portion 110 where the side wall portion 120 is not disposed, and the display panel assembly 200 covers a space enclosed by the side wall portion 120 and the main body portion 110. The housing 100 replaces the rear cover and the middle frame, so that the electronic device 10 has a simple structure and is easy to assemble.

As shown in fig. 8 and 9, in one embodiment, a float molding apparatus for a housing is modified based on conventional float plate glass molding to manufacture glass having a thin portion 610 and a thick portion 620, one surface of the glass being flat and the other surface being rugged.

As shown in fig. 8 and 9, in one embodiment, the conventional forming apparatus is first modified before forming the float glass of the present application, and the modified forming apparatus includes a forming trough and a support base 400. The forming groove is of a square structure and comprises a groove bottom 300 and a groove wall 310, forming liquid is arranged in the forming groove, under the general condition, the forming liquid is tin liquid, and other liquids can be arranged according to needs in actual production. The two ends of the forming groove are provided with an inlet and an outlet of molten glass, the longitudinal direction of the forming groove is arranged between the inlet and the outlet, and the direction perpendicular to the connecting line between the inlet and the outlet is the transverse direction of the forming groove.

A support table 400 is arranged above the groove bottom 300, and the periphery of the support table 400 is connected with the groove wall 310 around the forming groove. A liquid storage channel 320 is formed between the support platform 400 and the tank bottom 300, and the molding liquid can be stored in the liquid storage channel 320. The support platform 400 is provided with a supply runner 500, and the supply runner 500 is communicated with the liquid storage runner 320, so that the molding liquid can rise to the support platform 400. The side of the support platform 400 away from the slot bottom 300 includes a longitudinally extending raised portion 420 and a recessed portion 430. The protrusions 420 and the depressions 430 are alternately arranged in the lateral direction of the molding groove. The raised portion 420 and the recessed portion 430 have one end connected to the groove wall 310 at the inlet end of the forming groove and the other end connected to the groove wall 310 at the outlet end of the forming groove. The protruding portions 420 and the recessed portions 430 are spaced apart and parallel to each other. It can be understood that the two sides of the protrusion 420 are the recesses 430, the two sides of the recess 430 are the protrusions 420, and the protrusions 420 and the recesses 430 are parallel to each other.

The replenishment flow path 500 is a cylindrical or square communicating pipe, or the replenishment flow path 500 is a communicating pipe arranged in the longitudinal direction of the forming tank from the tank wall 310 at the inlet end of the forming tank to the tank wall 310 at the outlet end of the forming tank. The replenishment runner 500 is provided with a pressurizing device 510, and the pressurizing device 510 pressurizes the molding liquid in the replenishment runner 500, so that the molding liquid in the liquid storage runner 320 is conveyed to the support table 400 through the replenishment runner 500 to form an uneven liquid surface 410. It can be understood that when the molding liquid in the liquid storage channel 320 rises to the supporting platform 400 through the supply channel 500, no protrusion of the liquid level 410 is formed, i.e., when the molding liquid rises to the supporting platform 400 through the supply channel 500, the liquid level 410 is not affected. The user controls the pressurizing device 510 through a control system that can open, close, and adjust the pressurizing device 510, and adjusts the pressure of the molding liquid in the replenishment channel 500 by adjusting the pressurizing device 510. The molding liquid pressure in the replenishment channel 500 is different, and the liquid level of the molding liquid in the replenishment channel 500 at the corresponding position of the support table 400 is different. The arrangement of the replenishment passages 500 shown in fig. 8 is sparse, and only the presence of the replenishment passages 500 is illustrated, and in practice, the replenishment passages 500 may be arranged densely, and the support table 400 may be differentiated in an ideal state. It will be appreciated that the makeup flow path 500 is arranged sufficiently closely that a user can control the height of the fluid level 410 at any one location via the control system. Therefore, it can be understood that the user can control the liquid level 410 by the control system, so that the liquid level 410 has a uniform thickness to the side of the support platform 400 away from the tank bottom 300, but due to the nature of the fluid, the thickness of the fluid may be different at the junction of the raised portion 420 and the recessed portion 430, and the thickness cannot be completely uniform. It is also understood that there is a reasonable difference between the thickness of the liquid at one location of the liquid level 410 and the support platform 400 and the thickness of the liquid at other locations, and that the thickness of the liquid level 410 on the side of the support platform 400 away from the tank bottom 300 is uniform as referred to in this application. The liquid level 410 is dynamically balanced to form a non-planar molding liquid level by the continuous liquid supply of the supply flow channel 500.

As shown in fig. 8 and 9, the molding liquid circulates between the bottom 300 of the molding groove and the support table 400. In one embodiment, the molding liquid on the bottom 300 of the tank rises to the supporting platform 400 through the supply runner 500, a gap 440 is provided between the supporting platform 400 and the tank wall 310 at the outlet end of the molding tank, and the molding liquid falls from the supporting platform 400 to the liquid storage runner 320 through the gap 440. The rate of gap 440 leakage is controlled by setting the width of gap 440, and the rate of supply of makeup flow channel 500 is controlled by the control system controlling pressurization device 510 such that the rate of leakage in gap 440 is the same as the rate of supply of makeup flow channel 500.

As shown in fig. 8, in one embodiment, the sidewall parts 120 are located at two long sides of the main body part 110. The main body portion 110 is made of a thin portion 610, and the side wall portion 120 is made of a thick portion 620. The support table 400 is substantially parallel to a liquid surface 410, and the liquid surface 410 includes a convex surface 411 corresponding to the convex portion 420, a concave surface 412 corresponding to the concave portion 430, and a transition surface 413 connecting between the convex surface 411 and the concave surface 412. The thin portion 610 is formed by the convex surface 411, and the width of the main body portion 110 is generally 50mm to 100mm, so that the width of the convex surface 411 is limited to 40mm to 80mm, and the glass surface in contact with the convex surface 411 can be processed as required in the actual production process to increase the width of the glass surface. The thick portion 620 is formed by the concave surface 412, and the thickness of the side wall portion 120 is 1.5mm to 3.5mm, so that the width of the concave surface 412 is defined to be 7mm to 20 mm. Since the depth of the case 100 is 3.5mm to 8.5mm, the height difference between the defining protrusion 420 and the recess 430 is 8.5mm to 20 mm. In another embodiment, the side wall parts 120 are located at two short sides of the main body part 110, and the width of the convex surface 411 is defined to be 60mm to 160 mm.

As shown in FIG. 8, in one embodiment, the junction of the raised portions 420 and the recessed portions 430 of the support table 400 is smoothly transitioned. The makeup flow path 500 is uniformly arranged at the smooth transition, and the control system controls the pressure provided by the pressurization device 510 at the smooth transition to be greater than the pressure provided by the pressurization device at the concave portion 430 and less than the pressure provided by the pressurization device at the convex portion 420.

As shown in FIG. 10, in one embodiment, the intersection of the raised portions 420 and the recessed portions 430 of the support table 400 is at a right angle. A replenishment channel 500 is arranged right below the junction of the convex part 420 and the concave part 430, and provides molding liquid for the height difference of the convex part 420 and the concave part 430. In another embodiment, as shown in FIG. 11, the supply channel 500 is a longitudinally disposed communication from one end of the inlet of the forming trough to one end of the outlet of the forming trough. A replenishment channel 500 is arranged at the height difference position of the convex part 420 and the concave part 430, a first blocking piece 521 is arranged at one side of the replenishment channel 500 positioned at the convex part 420, and a second blocking piece 522 is arranged at one side of the replenishment channel 500 positioned at the concave part 430. The top of the first blocking piece 521 is slightly lower than the liquid level 410 or intersects the liquid level 410, and the first blocking piece 521 blocks the molding liquid at the protrusion 420 from flowing downwards. The top of the second blocking piece 522 is slightly lower than the liquid level 410 or intersects with the liquid level 410, and the second blocking piece 522 blocks the molding liquid in the supply passage 500 at the height difference from flowing to the recessed portion 430. And the pressurizing device 510 on the supply runner 500 makes the molding liquid in the supply runner 500 move vertically upward to the convex portion 420.

In another embodiment, the support table 400 is closely attached to the groove wall 310 at the periphery thereof. The pressurizing device 510 on the supply runner 500 at the boss 420 is installed in the forward direction so that the molding liquid flows from the supply runner 500 to the boss 420. The pressurizing device 510 on the supply runner 500 at the concave part 430 is reversely installed or not operated, so that the molding liquid on the convex part 420 flows to the concave part 430, and the molding liquid on the concave part 430 flows to the tank bottom 300 through the supply runner 500 at the concave part, thereby forming a stable molding liquid circulating device.

A float forming method of a float formed housing, comprising the steps of:

step a, arranging a forming groove and a supporting platform 400, wherein the forming groove comprises a groove bottom 300 and a groove wall 310, the supporting platform 400 and the groove bottom 300 are arranged at intervals so as to form a liquid storage flow channel 320 between the supporting platform 400 and the groove bottom 300, one side, far away from the groove bottom 300, of the supporting platform 400 comprises convex parts 420 and concave parts 430 which are alternately arranged, a supply flow channel 500 is arranged on each convex part 420, and the supply flow channel 500 is communicated with the liquid storage flow channel 320;

b, introducing a molding liquid into the molding groove, and enabling the molding liquid to form a rugged liquid surface 410 on one side of the support platform 400 far away from the groove bottom 300, wherein the liquid surface 410 comprises a convex surface 411 corresponding to the convex part 420, a concave surface 412 corresponding to the concave part 430 and a transition surface 413 connected between the convex surface 411 and the concave surface 412;

step c, making the molten glass liquid enter a forming groove and flow on the liquid surface 410 to form glass with a thin part 610 and a thick part 620, wherein the thin part 610 is correspondingly formed at the convex surface 411, and the thick part 620 is correspondingly formed at the concave surface 412;

and d, processing the glass obtained in the step c to obtain the shell 100 comprising the main body part 110 and the side wall part 120, wherein the thin part 610 is processed to be the main body part 110, the thick part 620 is processed to be the side wall part 120, and the thickness of the side wall part 120 is larger than that of the main body part 110.

The forming process of conventional float glass production is performed in a forming tank into which a protective gas (N2 and H2) is introduced. The molten glass flows into the tank furnace continuously and floats on the surface of the forming liquid with large relative density, and under the action of gravity and surface tension, the glass liquid is spread and flattened on the forming liquid surface to form an upper surface and a lower surface which are flat, hardened and cooled and then is guided to a transition roller table. The rollers of the roller table rotate to pull the glass belt out of the forming groove and enter an annealing kiln, and the flat glass product is obtained after annealing and cutting.

In the float glass forming process, the modified float forming equipment is adopted to perform glass forming to manufacture the glass with the thin part 610 and the thick part 620, wherein one surface of the glass is a plane, and the other surface of the glass is uneven.

In one embodiment, a molten glass is produced. The soda-lime glass has the main raw material components of about 73% of silica sand, about 9% of calcium oxide, 13% of sodium carbonate and 4% of magnesium. The raw materials are mixed according to the proportion and then the recovered glass particles are added. The prepared raw materials pass through a mixing bin and then enter a kiln with 5 bins for heating, and become molten glass at the temperature of about 1550 ℃. In other embodiments, other types of molten glasses may be produced, and the raw materials are changed accordingly.

The glass flows into the forming tank and floats above the liquid level 410, at a temperature of about 1000 ℃. The glass liquid on the liquid surface 410 forms a glass ribbon with a thickness of 3mm to 19 mm. Because the glass and the molding liquid in the molding groove have different viscosities, the glass liquid floating above and the molding liquid below are not mixed together, the upper surface of the glass liquid is a plane, and the lower surface of the glass liquid is attached to the liquid level 410. The glass ribbon leaving the forming trough is at a temperature of about 600 c and then enters an annealing chamber or a continuous slow cooling kiln where the temperature of the glass is gradually reduced to 50 c.

The glass after the slow cooling is subjected to several quality inspections, and then cut into glass gobs having predetermined sizes, and these glass gobs are processed and polished in accordance with the outer dimensions of the case 100, thereby obtaining a smooth and transparent case 100. A film may be formed on the inner surface of the casing 100 by evaporation to serve as a decoration layer, and in other alternative embodiments, ink may be sprayed on the inner surface of the casing 100, or a film may be adhered to the inner surface of the casing 100 to form a decoration layer. If the decoration layer is black, the inner structure of the mobile phone can be prevented from being seen through the casing 100, and the sidewall 120 and the main body 110 can be integrated into a single visual effect. Certainly, the decorative layer can also be provided with patterns to enhance the aesthetic property of the mobile phone rear shell.

The glass housing obtained by the hot bending method has the same thickness everywhere, i.e., the glass thickness of the bent side wall portion is equal to that of the straight plate portion. According to the technical scheme, the cross section of the formed glass is U-shaped in a float forming mode, the thickness of the side wall of the formed glass is large, and the shell 100 with the thickness of the side wall part 120 larger than that of the main body part 110 is formed in a small amount of CNC auxiliary machining mode after forming. The thickness of the main body 110 of the housing 100 obtained by the method is smaller than that of the sidewall 120, so that the housing has a beautiful curve and a strong stereoscopic impression, the aesthetic feeling and the hand feeling of the housing are improved, the outer surface of the housing 100 is smooth, and the user experience is better. The scale of the production line of the method is not limited by the forming method, and the energy consumption of unit products is low; the utilization rate of the finished product is high; scientific management is easy, full-line mechanization and automation are realized, and the labor productivity is high; the continuous operation period can be as long as several years, which is beneficial to stable production.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a float forming equipment of casing, characterized in that, includes shaping groove and supporting bench (400), the shaping groove includes tank bottom (300) and cell wall (310), supporting bench (400) and tank bottom (300) interval set up to form stock solution runner (320) between supporting bench (400) and tank bottom (300), one side that tank bottom (300) were kept away from in supporting bench (400) is including bellying (420) and depressed part (430) that set up in turn, just be equipped with supply runner (500) on bellying (420), supply runner (500) with stock solution runner (320) intercommunication, be equipped with supercharging device (510) on supply runner (500), in order to control one side that tank bottom (300) were kept away from in supporting bench (400) forms liquid level (410) of unevenness.

2. Float forming equipment of casing according to claim 1, characterized in that the recess (430) is also provided with a supply runner (500), and the supply runner (500) on the recess (430) is communicated with the liquid storage runner (320).

3. Float forming apparatus of a housing according to claim 1, characterized in that it further comprises a control system controlling the pressurizing means (510), which makes the thickness of the liquid surface (410) to the side of the support platform (400) remote from the tank bottom (300) uniform by adjusting the pressurizing means (510).

4. Float forming apparatus for a casing according to claim 1, characterised in that the forming trough comprises an inlet end from which the molten glass enters and an outlet end from which the molten glass exits, and that a gap (440) is provided between the support table (400) and the trough wall (310) at the outlet end.

5. Float forming apparatus of a housing according to claim 1, characterized in that the liquid level (410) comprises a convex surface (411) corresponding to the convex portion (420), a concave surface (412) corresponding to the concave portion (430) and a transition surface (413) connected between the convex surface (411) and the concave surface (412), the width of the concave surface (412) is 7 mm-20 mm, and the width of the convex surface (411) is 40 mm-80 mm.

6. Float forming apparatus of a housing according to claim 1, characterized in that the height difference between the raised portion (420) and the recessed portion (430) is 8.5 mm-20 mm.

7. A float forming method of a shell is characterized by comprising the following steps:

step a, a forming groove and a supporting table (400) are arranged, the forming groove comprises a groove bottom (300) and a groove wall (310), the supporting table (400) and the groove bottom (300) are arranged at intervals, so that a liquid storage flow channel (320) is formed between the supporting table (400) and the groove bottom (300), one side, far away from the groove bottom (300), of the supporting table (400) comprises alternately arranged convex parts (420) and concave parts (430), a supply flow channel (500) is arranged on each convex part (420), the supply flow channel (500) is communicated with the liquid storage flow channel (320), and a pressurizing device (510) is arranged on each supply flow channel (500);

b, introducing a molding liquid into the molding groove, and controlling the molding liquid to form a rugged liquid surface (410) on one side, away from the groove bottom (300), of the support table (400) through the pressurizing device (510), wherein the liquid surface (410) comprises a convex surface (411) corresponding to the convex part (420), a concave surface (412) corresponding to the concave part (430) and a transition surface (413) connected between the convex surface (411) and the concave surface (412);

c, enabling the molten glass to enter a forming groove and flow on the liquid level (410) to form glass with a thin portion (610) and a thick portion (620), wherein the thin portion (610) is correspondingly formed at the convex surface (411), and the thick portion (620) is correspondingly formed at the concave surface (412);

and d, processing the glass obtained in the step c to obtain a shell (100) comprising a main body part (110) and a side wall part (120), wherein the thin part (610) is processed to be the main body part (110), the thick part (620) is processed to be the side wall part (120), and the thickness of the side wall part (120) is larger than that of the main body part (110).

8. The float forming method of a casing according to claim 7,

the thickness of the main body part (110) is 0.6 mm-1.0 mm; the thickness of the side wall part (120) is 1.5mm to 3.5 mm.

9. The float forming method of a casing according to claim 7, wherein the main body portion (110) and the side wall portion (120) are perpendicular or at an obtuse angle; the main body part (110) and the side wall part (120) are smoothly transited.

10. The float forming method of a casing according to claim 7, wherein the main body (110) has a flat plate shape or an arc-shaped curved surface shape.

11. The float forming method of casing according to claim 7, wherein a decoration layer is provided on the inner surfaces of the main body portion (110) and the side wall portion (120).