CN110759633A - Forming method and forming equipment for inverted-buckle type glass cover plate - Google Patents
Forming method and forming equipment for inverted-buckle type glass cover plate Download PDFInfo
- Publication number
- CN110759633A CN110759633A CN201911008526.3A CN201911008526A CN110759633A CN 110759633 A CN110759633 A CN 110759633A CN 201911008526 A CN201911008526 A CN 201911008526A CN 110759633 A CN110759633 A CN 110759633A
- Authority
- CN
- China
- Prior art keywords
- cavity
- blank
- die
- glass cover
- cover plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 238000000465 moulding Methods 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000000725 suspension Substances 0.000 claims description 7
- 230000001965 increasing effect Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- 230000002349 favourable effect Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 238000004321 preservation Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- 238000013003 hot bending Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
- C03B23/0305—Press-bending accelerated by applying mechanical forces, e.g. inertia, weights or local forces
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
- C03B23/0307—Press-bending involving applying local or additional heating, cooling or insulating means
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a molding method of a back-off glass cover plate, which comprises the steps of placing an open flat-bottom glass cover plate blank in a back-off cavity formed by enclosing a lower die and an upper die; heating the cavity and driving the upper die and the lower die to rotate at a preset speed; and after the preset time is reached, stopping driving the upper die and the lower die to rotate, and simultaneously cooling the cavity to obtain a finished product workpiece. The invention is beneficial to one-time molding of the inverted-buckle glass cover plate, thereby solving the problem that the existing molding method can not mold the inverted-buckle glass cover plate at one time. In addition, the invention also discloses forming equipment of the inverted glass cover plate.
Description
Technical Field
The invention relates to the technical field of glass forming processing, in particular to a forming method and forming equipment of a reversed-buckled glass cover plate.
Background
Along with the popularization of smart phones, the shape of a glass cover plate of a mobile phone is also changed, and the glass cover plate gradually develops towards curved glass and 3D glass. However, the existing injection molding process or hot pressing process cannot manufacture the inverted-buckle-type glass cover plate with the flanging shown in fig. 1 through one-time molding, and only can process the inverted-buckle-type glass cover plate through multiple molding. However, the multiple molding method requires repeated positioning, which makes the molding process complicated.
Disclosure of Invention
The invention mainly aims to provide a method for forming a reverse-buckled glass cover plate, and aims to solve the technical problem that the existing forming process cannot manufacture the reverse-buckled glass cover plate with a flanging in a one-step forming mode.
In order to solve the technical problem, the invention provides a method for molding an inverted glass cover plate, which comprises the following steps:
placing the open flat-bottom glass cover plate blank in a back-off type cavity formed by enclosing a lower die and an upper die;
heating the cavity and driving the upper die and the lower die to rotate at a preset speed;
and after the preset time is reached, stopping driving the upper die and the lower die to rotate, and simultaneously cooling the cavity to obtain a finished product workpiece.
Preferably, the driving the upper die and the lower die to rotate at a preset speed includes:
and increasing the preset rotating speed of the upper die and the lower die from 0r/min to 600-1600 r/min within 0.5-2 min.
Preferably, the heating the cavity comprises:
and raising the temperature of the cavity from 25-200 ℃ to 550-800 ℃ within 5-60 min, and keeping the temperature for 2-5 min.
Preferably, the cooling treatment of the cavity comprises:
and cooling the temperature of the cavity from 550-800 ℃ to 25-200 ℃ within 10-60 min.
Preferably, the step of placing the open-top flat-bottom glass cover plate blank in the inverted-buckle-type cavity formed by the surrounding of the lower die and the upper die comprises the following steps:
placing the open flat-bottom glass cover plate blank in a cavity of a lower die;
and driving the upper die to move downwards until the middle part of the upper die is abutted against the middle part of the blank.
Preferably, said placing the open flat bottom glass cover plate blank into the cavity of the lower mold comprises:
and placing the blank in the middle of the cavity of the lower die through a manipulator.
The invention further provides forming equipment of the inverted-buckle type glass cover plate, which comprises a rack and at least one mould body rotatably arranged on the rack, wherein a rotary driving mechanism used for driving each mould body to rotate is arranged on the rack, the mould body is provided with a cavity used for accommodating a blank, the circumferential side surface of the cavity is constructed into an outwardly-concave annular curved surface so as to enable the cavity to be in an inverted buckle type, the mould body comprises a first split body and a second split body, a first cavity is arranged on the first split body, a second cavity is arranged on the second split body, and the first cavity and the second cavity can be combined to form the cavity.
Preferably, the die further comprises a heating device for heating the blank positioned in the cavity.
Preferably, the rotation driving mechanism comprises a bearing plate and a rotating shaft arranged on the bearing plate, the rotating shaft is rotatably connected with the rack, the first split body and the second split body are arranged in an up-down stacked state, and the second split body is positioned on the bearing plate.
Preferably, still including setting up suspension mechanism in the frame, suspension mechanism includes and sets up through linear guide the mounting panel that can follow vertical direction and move in the frame and with the mounting panel rotates to be connected and is located the butt pole directly over the die cavity, keep away from on the butt pole the one end of mounting panel is used for with be located blank butt in the die cavity, just seted up on the first components of a whole that can function independently with the through-hole of the intercommunication of first cavity, just first components of a whole that can function independently passes through the through-hole cover is established on the butt pole and with the mounting panel rotates to be connected.
According to the forming method provided by the embodiment of the invention, the blank is placed in the inverted-buckle-type cavity formed by enclosing the lower die and the upper die, the upper die and the lower die are driven to rotate and heat the cavity, and the peripheral side surface of the softened blank is expanded from inside to outside by using the centrifugal force generated when the blank rotates along with the upper die and the lower die to obtain a finished product workpiece, so that the forming mode of the inverted-buckle-type glass cover plate is facilitated to be simplified, the inverted-buckle-type glass cover plate can be formed at one time by using the method, and the problem that the inverted-buckle-type glass cover plate cannot be formed at one time by using the existing forming method is solved.
Drawings
FIG. 1 is a schematic structural diagram of a conventional inverted product;
FIG. 2 is a flowchart illustrating an embodiment of a method for forming a flip-chip glass cover plate according to the present invention;
FIG. 3 is a flow chart illustrating another embodiment of a method for forming a cover plate of a flip-chip type glass according to the present invention;
FIG. 4 is a flowchart illustrating a method for forming a flip-chip glass cover plate according to another embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for forming a flip-chip glass cover plate according to another embodiment of the present invention
FIG. 6 is a flowchart illustrating a method for forming an inverted glass cover plate according to another embodiment of the present invention
FIG. 7 is a cross-sectional view of one embodiment of an apparatus for forming a cover glass of the inverted button type of the present invention from a perspective;
fig. 8 is a cross-sectional view of another embodiment of the apparatus for forming the inverted-buckle type glass cover plate according to the present invention from a viewing angle.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.
The invention provides a molding method of an inverted glass cover plate, as shown in fig. 2, the molding method comprises the following steps:
s100: and placing the open flat-bottom glass cover plate blank into an inverted buckle type cavity formed by enclosing the lower die and the upper die.
In this step, the blank is fixed in the back-off type die cavity formed by the combination of the upper die and the lower die, the fixing mode can be vacuum adsorption or butt joint or clamping fixation through a fixing device, and the back-off type die cavity is the accommodating cavity of the die. The shape of the inverted cavity is consistent with that of a finished workpiece, the bottom of the inverted cavity is used for bearing a non-forming area of the blank, and the circumferential side face of the inverted cavity is used for abutting against the circumferential side face of the blank expanded outwards under the centrifugal force.
S200: and heating the cavity and driving the upper die and the lower die to rotate at a preset speed.
In the step, the upper die and the lower die (i.e. the blank) are driven to rotate, at the moment, the die is preferably in a revolving body shape, and when the rotation speed of the blank reaches a preset value, the die cavity (i.e. the blank) can be heated. The blank is subjected to centrifugal force due to circular motion, so that the inner side surface and the outer side surface of the circumferential side surface of the blank can gradually form annular cambered surfaces protruding from inside to outside in the autorotation process. The heating mode of the workpiece may be that the blank is heated when the blank rotates at a stable speed, or the blank is heated to an initial temperature before the blank rotates to preheat the blank, and the blank is driven to rotate and gradually heated to a forming temperature after the blank is preheated for a preset time, wherein the initial temperature is less than the forming temperature, for example, the initial temperature is 100-200 ℃. The centrifugal force is calculated as F ═ MR ω 2, where M is the mass of the blank, R is the radius of rotation, and ω is the angular velocity of rotation. The centrifugal force applied to the blank can be calculated according to the mass, the rotation radius and the rotation angular velocity of the blank, so that corresponding parameters can be calculated according to different blanks, and detailed description is omitted.
S300: and after the preset time is reached, stopping driving the upper die and the lower die to rotate, and simultaneously cooling the cavity to obtain a finished product workpiece.
In this step, the blank is after the rotation of preset time, and the circumference side of blank continuously receives the effect of centrifugal force to after making the blank be predetermined back-off type form (being that the circumference outer wall surface of blank and the inner wall of die cavity laminate completely), stop heating the blank and stop driving the blank and carry out the rotation, thereby obtain finished product work piece.
In the forming method of the inverted-buckle type glass cover plate, the blank is placed in the inverted-buckle type cavity formed by enclosing the lower die and the upper die, the upper die and the lower die are driven to rotate and the cavity is heated, and the peripheral side surface of the softened blank is expanded from inside to outside by utilizing the centrifugal force generated when the blank rotates along with the upper die and the lower die to obtain a finished product workpiece, so that the forming mode of the inverted-buckle type glass cover plate is facilitated to be simplified, the inverted-buckle type glass cover plate can be formed at one time by utilizing the method, and the problem that the inverted-buckle type glass cover plate cannot be formed at one time by utilizing the existing forming method is solved.
In a preferred embodiment of the present invention, as shown in fig. 3, the driving the upper mold and the lower mold to rotate at a predetermined speed includes:
s210: and increasing the preset rotating speed of the upper die and the lower die from 0r/min to 600-1600 r/min within 1-2 min.
In the step, the glass workpiece is heated after the rotation speed of the blank reaches the preset speed, and the blank is not fixed any more, so that the surface of the heated and softened blank is prevented from being damaged in the subsequent heating process. When the blank rotates at a stable speed and is positioned at the central position of the inverted-buckle-type cavity, the blank does not move. The speed of the blank autorotation is different according to the material and specification of the product and the heating temperature, and the speed of the blank autorotation can be specifically taken in the range of 600-1600 r/min. And the time for lifting the blank from the static state to the preset speed can be 0.5-2 min, if the blank is not hot, the time can be 0.5min, if the blank is preheated, the blank is selected according to the preheated temperature, and if the blank is preheated, the time is longer as the preheated temperature is higher.
In a preferred embodiment of the present invention, as shown in fig. 3, the heating the cavity includes:
s220: and raising the temperature of the cavity from 25-200 ℃ to 550-800 ℃ within 5-60 min, and keeping the temperature for 2-5 min.
In the step, the blank is heated gradually to a first temperature within a first preset time, and the blank is subjected to heat preservation within a second preset time, where the first temperature is a temperature at which the blank reaches a preset softening degree, and the first temperature may be 550 to 800 ℃ according to characteristics of different materials, where the first preset time is preferably 5 to 60min, and the second preset time may be 2 to 5 min. Certainly, the heating mode can also divide the first preset temperature into a plurality of temperature grades in proper order, keeps warm for the preset time after the temperature of blank reaches one of them temperature grade, and heat the blank to the next temperature grade after keeping warm for the preset time again, and repeated operation in proper order makes the blank heat up to first temperature to prevent that the blank from producing the damage at the in-process that heaies up rapidly, thereby be favorable to reducing the defective rate of product. The heat preservation time of each grade temperature can be consistent, or the heat preservation time of each grade temperature is gradually increased from low grade to high grade. In this embodiment, because the reason that the product was snatched to batch production and utilization manipulator, the temperature keeps higher state in the process of the in-process cooling of last round of production, if the initial temperature in the die cavity is 25 ~ 200 ℃, then, when recycling the manipulator snatch the product then can let the die cavity keep higher temperature to be favorable to increasing machining efficiency. And when the product is grabbed manually, the cavity needs to be kept at a lower temperature so as to avoid scalding the worker.
In a preferred embodiment of the present invention, as shown in fig. 4, the cooling process for the cavity includes:
s310: and cooling the temperature of the cavity from 550-800 ℃ to 25-200 ℃ within 10-60 min.
In this step, after the blank rotates for a preset time (i.e. the blank in the cavity is in a specific inverted-buckle state), the cavity is cooled to obtain a finished workpiece. The cooling mode can be to gradually cool the cavity to a second temperature within a third preset time, at this time, the first preset time is preferably 10-60 min, and the second temperature is preferably 25-200 ℃. Certainly, the cooling mode can also be that the area between the first temperature and the second temperature is divided into a plurality of grades, the semi-finished workpiece is kept warm for a preset time after being cooled to the previous high-grade temperature, and the semi-finished workpiece is cooled to the next low-grade temperature and kept warm for a preset time after being kept warm for the preset time at one temperature grade, so that the semi-finished workpiece is cooled to the second temperature through the circulating operation, the phenomenon that the product is damaged by rapid cooling is favorably avoided, and the qualification rate of the product is improved. The heat preservation time of each grade temperature can be consistent, or the heat preservation time of each grade temperature can be reduced from high grade to low grade. Of course, in the process of cooling, after the semi-finished workpiece reaches the standard temperature, the semi-finished workpiece can be stopped to be driven to rotate. Specifically, the standard temperature may be the second temperature, or may be a temperature value between the first temperature and the second temperature, and at this time, the temperature value may be set according to the material of the product to be processed.
In a preferred embodiment of the present invention, as shown in fig. 5, the placing the blank of the open-top flat-bottom glass cover plate in the inverted-buckle-type cavity formed by the lower mold and the upper mold comprises:
s110: and placing the open flat-bottom glass cover plate blank in a cavity of the lower die.
In the step, the upper die and the lower die are driven to open the die (namely, the upper die goes upwards) in a manual mode or a mechanical driving mode, so that the blank is placed in the cavity of the lower die and needs to be placed in the center of the cavity of the lower die, and the formed product can be guaranteed to be a qualified product.
S120: and driving the upper die to move downwards until the middle part of the upper die is abutted against the middle part of the blank.
In this step, after placing the blank in the die cavity of lower mould, also can utilize artificial mode or mechanical drive's mode drive to go up mould and lower mould and carry out the compound die action (go up the mould and descend), and the central point that lies in the die cavity on going up the mould puts and is provided with protruding position, can make the protruding position of manuscript and the middle part butt that lies in the blank of die cavity after going up mould and lower mould compound die and accomplishing to conveniently fix lieing in the blank, prevent that the blank from producing the displacement at the in-process of rotation, thereby lead to producing bad product.
In a preferred embodiment of the present invention, as shown in fig. 6, said placing the open-ended flat bottom glass cover plate blank into the cavity of the lower mold comprises:
s111: and placing the blank in the middle of the cavity of the lower die through a manipulator.
In this step, the mode that the blank was placed in back-off type die cavity can be that the manual work is placed or is placed through the manipulator, when placing the blank through the manipulator, is favorable to accurate placing the blank in the central point of back-off type die cavity puts to be favorable to the blank to fix a position in back-off type die cavity. Of course, when the blank is placed manually, the blank can also be placed in the inverted-buckle-type cavity through a clamp.
When the forming method provided by the invention is used for processing the mobile phone cover plate glass, the graphite mold is adopted as the mold, and the graphite molds are positioned in the closed space, so that the graphite molds are prevented from being oxidized by injecting protective gas into the closed space, a plurality of glass workpieces positioned in the mold are heated at the same time, and the closed space is favorable for reducing heat loss. The rotation speed of the glass workpiece is preferably 700r/min, and the centrifugal force applied to the glass workpiece is controlled to be about 40N, and the forming heating temperature of the glass workpiece is set to be about 680 ℃.
The invention further provides a molding device of a reversed-buckled glass cover plate, which comprises a rack 100 and at least one mold body 200 rotatably arranged on the rack 100, wherein a rotary driving mechanism 300 for driving each mold body 200 to rotate is arranged on the rack 100, the mold body 200 is provided with a cavity 210 for accommodating a blank 500, the circumferential side surface of the cavity 210 is configured into an outwardly-concave annular curved surface so as to enable the cavity 210 to be in a reversed-buckled shape, the mold body 200 comprises a first split body 220 and a second split body 230, the first split body 220 is provided with a first cavity 221, the second split body 230 is provided with a second cavity 231, and the first cavity 221 and the second cavity 231 can be combined to form the cavity 210.
In this embodiment, as shown in fig. 7, the mold body 200 is rotatably disposed on the frame 100, the shape of the mold body 200 is preferably a revolving body, and may be a circular block body, so as to facilitate the mold body 200 to rotate, and the mold body 200 may be made of graphite or other hard materials. The die body 200 has a cavity 210 therein for receiving the blank 500, and the size, depth and shape of the cavity 210 can be set according to the size, height and shape of the finished workpiece 600 (i.e. the inverted product). Wherein, the inner surface of the cavity 210 comprises a supporting surface for supporting the non-forming region of the blank 500 and a forming surface for supporting the forming region of the blank 500, preferably, the supporting surface is the bottom surface of the cavity 210, the forming surface is the circumferential side surface of the cavity 210, and the circumferential side surface of the cavity 210 is configured as an outwardly concave annular curved surface, so that the cavity 210 is of an inverted type. The driving mode of the rotary driving assembly can be that a single motor is directly used for driving one independent die body 200 to rotate, or a gear assembly or a synchronous belt assembly is used for driving a plurality of die bodies 200 to rotate synchronously. At this time, the flexible blank 500 may be directly placed in the cavity 210, or the blank 500 may be softened and placed in the cavity 210, and then may be processed by using a centrifugal force generated by the rotation of the die body 200. The number of the preferable die bodies 200 is multiple, and the specific number can be arranged according to actual conditions, so that a plurality of blanks 500 can be processed conveniently and simultaneously, and the plurality of die bodies 200 are positioned in a closed space, namely in a heat-insulating cover, and can be covered on the plurality of die bodies 200.
Meanwhile, in order to facilitate the blank 500 to be placed in the cavity 210 or the finished workpiece 600 to be taken out of the cavity 210, the mold body 200 includes a first component 220 and a second component 230 which are layered up and down, the first component 220 has a first cavity 211 thereon, the second component 230 has a second cavity 212 thereon, and the first cavity 211 and the second component 212 are combined to form the cavity 210. The first and second segments 220 and 230 may be stacked up and down, or horizontally disposed left and right. In this embodiment, it is preferable that the first sub-body 220 (i.e., the upper mold) and the second sub-body 230 (i.e., the lower mold) are stacked up and down, that is, the first sub-body 220 has an upper half portion of the cavity 210, the second sub-body 230 has a lower half portion of the cavity 210, and the second sub-body 230 is rotatably connected to the frame 100, at this time, the parting surfaces of the first sub-body 220 and the second sub-body 230 are the circumferentially protruded vertex positions of the cavity 210, so that the finished workpiece 600 can be taken out. As for the mode of opening and closing the first and second split bodies, one side of the first split body 220 may be hinged to one side of the second split body 230, and meanwhile, a fixing device, such as a left-hand buckle or a screw, for fixing the first and second split bodies 220 and 230 is provided, and the mold opening and closing is performed manually, or of course, the first split body 220 may be connected to an output end of a linear driving mechanism, so as to drive the first split body 220 to move in the vertical direction, thereby automatically controlling the mold opening and closing. The ratio of the first and second divided bodies 220 and 230 occupying the cavity 210 may be set according to actual conditions, and preferably, the parting plane between the first and second divided bodies 220 and 230 is the middle part of the cavity 210. In order to prevent the blank 500 in the cavity 210 from sliding during rotation, a positioning device may be further disposed on the first split body 220, preferably, the positioning device is a rod, preferably, the rod is disposed at a central position in the first cavity and is disposed in a vertical state, and in a mold clamping state, an end of the rod away from the first split body 220 may abut against a non-molding region of the blank 500 in the cavity 210. In this case, the rod may preferably be a telescopic rod, such as one provided with reference to a pneumatic rod or the like, so as to avoid rigid contact between the rod and the blank 500.
The blank 500 that can be processed by the forming apparatus in this embodiment may be a flexible blank 500 or a blank 500 that can be softened after being heated, such as a blank 500 made of silica gel, plastic, or acrylic, besides forming glass. In this embodiment, after the blank 500 is placed in the cavity 210, the centrifugal force generated by the rotation of the mold body 200 is utilized to expand the circumferential side surface of the blank 500 toward the circumferential side wall of the cavity 210 after the blank is softened, and the circumferential side wall of the cavity 210 supports the expanded part of the blank 500, so as to obtain the finished workpiece 600, so that the inverted-type glass cover plate can be formed at one time by conveniently utilizing a simple structure, thereby simplifying the process of producing the inverted-type glass cover plate at present, and solving the problem that the inverted-type glass cover plate cannot be formed at one time by the existing forming equipment.
In order to facilitate the processing of the blank 500, the forming apparatus may further include a heating device, and at this time, the material for manufacturing the mold body 200 needs to have characteristics of small expansion coefficient, high thermal conductivity coefficient, and the like in a high temperature environment, and preferably, the top of the first split body is provided with a through hole communicated with the first cavity. The heating device may be an infrared lamp tube disposed on the frame 100 and above the mold body 200, and light emitted from the infrared lamp tube may pass through the through hole to the inside of the cavity 210, thereby facilitating heating of the blank 500 in the cavity 210. In this case, the infrared lamp tube is preferably a ring-shaped lamp tube conforming to the outer shape of the blank 500. In order to further enhance the heating effect of the infrared lamp tube, a lampshade for converging light emitted by the infrared lamp tube is covered on the infrared lamp tube, so that the peripheral side of the blank 500 is irradiated by infrared light, and the softening speed of the side of the blank 500 is accelerated. Of course, the heating device may also be a heating wire disposed in the die body 200 and directly below the cavity 210, and preferably, the heating wire is arranged in a ring shape, and the shape of the heating wire is consistent with the shape of the blank 500, so as to heat the edge of the blank 500. As for the manner of energizing the heating wire, two positive and negative electrode rings are disposed on the frame 100 around the rotation axis (i.e., the rotation axis 320) of the mold body 200, and two positive and negative electrode contact pieces respectively contacting with the positive and negative electrode rings are disposed on the rotation axis of the mold body 200, so as to achieve the conduction of the driving mechanism circuit. Of course, the heating wires may be disposed on the heat-insulating cover, so as to heat the blanks 500 in the plurality of mold bodies 200 at the same time.
As shown in fig. 7 to 8, the first sub-body 220 and the second sub-body 230 are arranged in an up-and-down stacked manner, and the second sub-body 230 is rotatably connected to the rack. In order to facilitate the installation of the mold body 200 (i.e., the second split body 230) on the frame 100, the rotation driving mechanism 300 includes a bearing plate 310, a rotating shaft 320 disposed on the bearing plate 310, and a rotation driving assembly for driving the rotating shaft to rotate, preferably, the bearing plate 310 is a circular plate, one end of the rotating shaft 320 far away from the bearing plate 310 is rotatably connected to the frame 100, and at this time, an output shaft of the rotation driving assembly is connected to the rotating shaft 320, so as to drive the mold body 200 located on the bearing plate 310 to rotate. Preferably, the mold body 200 is concentrically arranged with the carrier plate 310, thereby facilitating driving the mold body 200 to rotate. As for the connection mode of the mold body 200 and the carrier plate 310, the connection mode may be fixed by screws or by a clamping structure, so that the mold body 200 with different cavities 210 is conveniently replaced. Of course, in order to increase the safety of the molding apparatus during operation, a protective cover may be provided on the frame 100. As for the manner of opening the protection cover, the linear driving assembly 430 may be used to drive the protection cover to reciprocate along the vertical direction, or one side of the bottom of the protection cover is hinged to the frame 100, and the side opposite to the hinged side is fixed by a screw or clamped, so that the protection cover can be opened and closed quickly. Preferably, the protection cover is a circular cylinder having an open end, and the carrier plate 310 may be located in the inner space of the protection cover through the open end thereof. Of course, the heat-insulating cover in the above embodiments can also be used as a protective cover.
In a preferred embodiment, as shown in fig. 7, in order to prevent the blank 500 from being removed from the cavity 210 during machining, the suspension mechanism 300 includes a mounting plate 410 disposed on the frame 100 via a linear guide, an abutment rod 420 rotatably coupled to the mounting plate 410, and a linear driving assembly 430 for driving the mounting plate 410 to move. The length of the abutting rod 420 can be set according to actual conditions, so that one end of the abutting rod 420, which is far away from the mounting plate 410, can pass through the through hole formed in the first split body 220 to abut against the blank 500 located in the cavity 210 under the driving of the linear driving assembly 430, and preferably, the abutting rod 420 is in a vertical state and is arranged concentrically with the rotating shaft 320, so that the abutting position of the abutting rod 420 is the central position of the bottom of the cavity 210. Meanwhile, in order to prevent the blank 500 from being damaged when the abutting rod 420 abuts against the blank 500, a flexible abutting portion 421 is disposed at an end of the abutting rod 420 away from the mounting plate 410, and preferably, the flexible abutting portion 421 is made of a high temperature resistant flexible material, such as high temperature resistant rubber. Of course, a refractory flexible material may be disposed on the bottom surface of the cavity 210 to protect the blank 500.
As shown in fig. 7, in order to facilitate the opening and closing of the first and second sub-bodies 220 and 230, the first sub-body 220 may be sleeved on the abutting rod 420 through a through hole and rotatably connected to the mounting plate 410, so as to facilitate the driving of the first sub-body 220 to approach or separate from the second sub-body 230 by the suspension mechanism 400. At this time, in order to heat the blank 500 in the cavity 210, it is preferable that the diameter of the through hole on the first sub-body 220 is larger than the diameter of the abutting rod 420, and the mounting plate 410 is provided with a through hole capable of communicating with the through hole on the first sub-body 220, so that the heating efficiency is increased when the blank 500 in the plurality of mold bodies 200 in the heat-insulating cover is heated as a whole. In order to facilitate the close bonding of the parting surfaces of the first and second bodies 220 and 230 after the mold is closed, the finish of the parting surfaces of the first and second bodies 220 and 230 is at least Ra0.8, or a flexible layer is coated on the parting surfaces of the first and second bodies 220 and 230, so that the first and second bodies 220 and 230 are bonded more closely. In order to prevent the side of the blank 500 from being stretched too long during the processing, the first sub-body 220 is provided with a blocking portion, which may be an extension block disposed around the open end of the cavity 210, so that the blocking portion can be used to prevent the side of the blank 500 from being stretched to a preset length and then stop stretching. At this time, an annular groove matched with the stretching side of the blank 500 may be further formed on one side surface of the blocking part facing the inside of the cavity 210, and the side of the blank 500 may be inserted into the annular groove after being stretched to a preset length, so as to facilitate the forming of the blank 500 into a preset shape. Meanwhile, in this embodiment, the circumferential side wall of the cavity 210 may be configured as an arc side surface as shown in fig. 7 and 8, so that the curved blank 500 with a large side radian may be produced, while in the glass hot bending forming technology, only glass with a small side radian may be produced, so that curved glass with a large side radian may be produced by using the forming equipment in this embodiment. Of course, the mold body 200 may be divided in the vertical direction to form a left-right mold assembly, and the two mold split bodies are moved horizontally and oppositely to form the mold cavity 210 in combination. Adopt the first components of a whole that can function independently 220 and the second components of a whole that can function independently 230 that set up among the former in this embodiment to can conveniently produce back-off type product, be favorable to practicing thrift the production material with this, extravagant material when avoiding adopting the mode production back-off type product of cold carving, thereby be favorable to reducing production and rise originally. By dividing the mold body 200 into the first and second segments 220 and 230, at this time, a circular arc chamfer of a predetermined size may be provided between the circumferential side wall and the bottom surface of the cavity 210, so as to form a proper circular arc edge on the side of the blank 500, and the circumferential side wall of the cavity 210 may be a smooth plane or curved surface, or may be two planes or curved surfaces at a predetermined angle. Meanwhile, the protective cover and the infrared lamp tube for heating may also be fixed on the mounting plate 110, so as to facilitate the opening and closing of the protective cover when the first and second sub-bodies 220 and 230 are driven to open and close the mold.
In the above embodiment, the linear driving assembly 430 may be selected from any one of a motor screw assembly, a rack and pinion assembly, and a linear cylinder. Wherein, in order to prevent that too big and damage of atress when blank 500 and butt pole 420 butt, preferably by the removal of sharp cylinder drive butt pole 420, the cylinder body setting of sharp cylinder is on frame 100, and the output of sharp cylinder is connected with mounting panel 410, and the output shaft of preferred sharp cylinder is vertical arranging downwards. And meanwhile, a proportional valve for controlling the stroke of the linear cylinder is connected to the air inlet end of the linear cylinder. It will be appreciated that the proportional valve has some pressure compensation function. That is, former before the operation, can set for a predetermined pressure value through PLC (industrial control device), at the operation in-process, if the pressure between extension rod 420 and blank 500 does not reach the default, for guaranteeing that it reaches the predetermined pressure value, the proportional valve can control sharp cylinder drive extension rod 420 and move towards the direction of blank 500, in order to compensate its pressure, thereby guarantee the one end and the blank 500 surface laminating of extension rod 420, and then guarantee the stability of blank 500 when adding man-hour. At this time, when a plurality of mold bodies 200 are arranged on the machine frame 100, a plurality of abutment columns 140 and/or the first division body 220 may be mounted on the same mounting plate 410, thereby facilitating the simultaneous control of the opening and closing of the first division body 220 and the second division body 230. Meanwhile, the protective cover may be an annular cylinder arranged around the circumference of the mounting plate 410 to cover the plurality of die bodies 220 at the same time, or the mounting plate 410 may have a plurality of protective covers to cover the corresponding one of the die bodies 200 individually.
In one embodiment, as shown in fig. 8, in order to prevent the blank 500 from being removed from the cavity 210 during processing, the bottom surface of the mold body 200 (i.e., the second part 230) is recessed inward to form an air cavity 231, and the air cavity 231 is located right below the cavity 210. Wherein, the top surface of the air cavity 231 is preferably the same size as the bottom surface of the cavity 210, and the distance between the top surface of the air cavity 231 and the bottom surface of the cavity 210 is 2-4mm, preferably 3mm, thereby being beneficial to enhancing the vacuum adsorption performance. At this moment, be provided with air flue 121 in the pivot 320, the through-hole that sets up on the loading board 310 is passed through to the one end of air flue 121 and is communicated with air cavity 231, and the other end passes through rotary joint and outside vacuum machine intercommunication, and rotary joint and pivot 320 rotate to be connected, as to rotary joint's model then can select and arrange the mode according to actual conditions also can install according to conventional connected mode can. In this embodiment, the blank 500 positioned in the cavity 210 is vacuum-sucked by gaps between the particles constituting the mold body 200 by generating vacuum negative pressure in the air cavity 231 using a vacuum machine. Of course, a vent hole communicating with the air chamber 231 may be formed at the bottom of the cavity 210, and the diameter of the vent hole is less than 0.5mm, so as to prevent the blank 500 from being damaged during vacuum suction. At this time, the suspension mechanism 400 includes only the mounting plate 410 and the linear driving assembly 430 and the second sub-body 230 is rotatably provided on the mounting plate 410.
In the working process of the forming apparatus in the above embodiment, in order to place the blank 500 in the central portion of the cavity 210, the manipulator may be used to grasp the blank 500 and place the blank 500 in the cavity 210, so as to accurately control the placement position of the blank 500, and the manipulator preferably adopts a multi-joint manipulator or a four-shaft manipulator. Of course, it is also possible to place the blank 500 in the cavity 210 using a special jig to precisely control the position where the blank 500 is placed. Specifically, the clamp may be an annular body adapted to the open end of the cavity 210, so that the annular body can be placed in the cavity 210 through the open end of the cavity 210, two clamping blocks are oppositely disposed in the circumferential direction of the annular body, and the two clamping blocks are slidably connected to the annular body, so that the two clamping blocks can be close to or away from each other, at this time, the blank 500 can be placed in the middle of the annular body, the blank 500 is clamped by the two clamping blocks, and the clamp is placed in the cavity 210 manually or by a manipulator, and then the two clamping blocks are controlled to move back and forth, so that the blank 500 is placed in the center of the cavity 210.
The above is only a part or preferred embodiment of the present invention, and neither the text nor the drawings should limit the scope of the present invention, and all equivalent structural changes made by the present specification and the contents of the drawings or the related technical fields directly/indirectly using the present specification and the drawings are included in the scope of the present invention.
Claims (10)
1. A method for forming an inverted glass cover plate is characterized by comprising the following steps:
placing the open flat-bottom glass cover plate blank in a back-off type cavity formed by enclosing a lower die and an upper die;
heating the cavity and driving the upper die and the lower die to rotate at a preset speed;
and after the preset time is reached, stopping driving the upper die and the lower die to rotate, and simultaneously cooling the cavity to obtain a finished product workpiece.
2. The molding method according to claim 1, wherein said driving the upper and lower molds to rotate at a preset speed comprises:
and increasing the preset rotating speed of the upper die and the lower die from 0r/min to 600-1600 r/min within 0.5-2 min.
3. The molding method according to claim 1 or 2, wherein the heating the cavity comprises:
and raising the temperature of the cavity from 25-200 ℃ to 550-800 ℃ within 5-60 min, and keeping the temperature for 2-5 min.
4. The molding method according to claim 3, wherein the cooling the cavity comprises:
and cooling the temperature of the cavity from 550-800 ℃ to 25-200 ℃ within 10-60 min.
5. The method of claim 1, wherein said placing an open flat bottom glass cover blank in an inverted cavity defined by a lower mold and an upper mold comprises:
placing the open flat-bottom glass cover plate blank in a cavity of a lower die;
and driving the upper die to move downwards until the middle part of the upper die is abutted against the middle part of the blank.
6. The molding method of claim 5, wherein said placing an open flat bottom glass cover plate blank in a cavity of a lower mold comprises:
and placing the blank in the middle of the cavity of the lower die through a manipulator.
7. The utility model provides a former of back-off type glass apron, its characterized in that, includes that frame and at least one rotate the setting and is in mould body in the frame, be equipped with in the frame and be used for driving each the rotary driving mechanism of mould body rotation, the mould body has the die cavity that is used for holding the blank, the circumference side of die cavity is constructed into outside sunken annular curved surface, so that the die cavity is the back-off type, the mould body includes first components of a whole that can function independently and second components of a whole that can function independently, be provided with first cavity on the first component of a whole that can function independently, be provided with the second cavity on the second component of a whole that can function independently, first cavity and second cavity can make up the formation the die cavity.
8. The molding apparatus as defined in claim 7, further comprising heating means for heating the blank within the cavity.
9. The molding apparatus as claimed in claim 7, wherein the rotation driving mechanism includes a bearing plate and a rotating shaft provided on the bearing plate, the rotating shaft is rotatably connected to the frame, the first and second segments are arranged in a stacked state, and the second segment is located on the bearing plate.
10. The molding device according to claim 9, further comprising a suspension mechanism disposed on the frame, wherein the suspension mechanism comprises a mounting plate disposed on the frame through a linear guide rail and capable of moving in a vertical direction, and an abutting rod rotatably connected to the mounting plate and located directly above the cavity, one end of the abutting rod away from the mounting plate is used for abutting against a blank located in the cavity, the first split body is provided with a through hole communicated with the first cavity, and the first split body is sleeved on the abutting rod through the through hole and rotatably connected to the mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911008526.3A CN110759633A (en) | 2019-10-22 | 2019-10-22 | Forming method and forming equipment for inverted-buckle type glass cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911008526.3A CN110759633A (en) | 2019-10-22 | 2019-10-22 | Forming method and forming equipment for inverted-buckle type glass cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110759633A true CN110759633A (en) | 2020-02-07 |
Family
ID=69332908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911008526.3A Pending CN110759633A (en) | 2019-10-22 | 2019-10-22 | Forming method and forming equipment for inverted-buckle type glass cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110759633A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1046513A (en) * | 1950-12-21 | 1953-12-07 | Egyesuelt Izzolampa | Process for manufacturing plastic molded bodies, in particular molten glass, and mold for this process |
| JPH07196330A (en) * | 1993-12-28 | 1995-08-01 | Kawamura Kogyo Kk | Production of glassware |
| JP2004323338A (en) * | 2003-04-30 | 2004-11-18 | Japan Siper Quarts Corp | Shaping method and regenerating method for quartz crucible |
| FR3001451A1 (en) * | 2013-01-28 | 2014-08-01 | Arc Internat France | Producing glass article used to manufacture e.g. bowls, comprises providing mold, bringing down drop of molten glass on bottom of mold, and driving the mold in rotation about vertical axis to cause spreading of glass on bottom of mold |
| CN107176782A (en) * | 2017-06-27 | 2017-09-19 | 东旭科技集团有限公司 | Glass hot-bending die |
| CN109796125A (en) * | 2019-01-30 | 2019-05-24 | 东莞市轩驰智能科技有限公司 | Centrifugal forming processing method and its processing unit (plant) |
| CN210945342U (en) * | 2019-10-22 | 2020-07-07 | 东莞市轩驰智能科技有限公司 | Forming equipment for inverted glass cover plate |
-
2019
- 2019-10-22 CN CN201911008526.3A patent/CN110759633A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1046513A (en) * | 1950-12-21 | 1953-12-07 | Egyesuelt Izzolampa | Process for manufacturing plastic molded bodies, in particular molten glass, and mold for this process |
| JPH07196330A (en) * | 1993-12-28 | 1995-08-01 | Kawamura Kogyo Kk | Production of glassware |
| JP2004323338A (en) * | 2003-04-30 | 2004-11-18 | Japan Siper Quarts Corp | Shaping method and regenerating method for quartz crucible |
| FR3001451A1 (en) * | 2013-01-28 | 2014-08-01 | Arc Internat France | Producing glass article used to manufacture e.g. bowls, comprises providing mold, bringing down drop of molten glass on bottom of mold, and driving the mold in rotation about vertical axis to cause spreading of glass on bottom of mold |
| CN107176782A (en) * | 2017-06-27 | 2017-09-19 | 东旭科技集团有限公司 | Glass hot-bending die |
| CN109796125A (en) * | 2019-01-30 | 2019-05-24 | 东莞市轩驰智能科技有限公司 | Centrifugal forming processing method and its processing unit (plant) |
| CN210945342U (en) * | 2019-10-22 | 2020-07-07 | 东莞市轩驰智能科技有限公司 | Forming equipment for inverted glass cover plate |
Non-Patent Citations (1)
| Title |
|---|
| 胡建国: "火灾事故调查工作实务指南", 31 January 2013, 中国人民公安大学出版社, pages: 124 - 125 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017016418A1 (en) | Multi-station injection moulding machine | |
| CN105195588B (en) | A kind of large-scale titanium alloy skin part radiant heating fixture for forming and processing method | |
| US3054141A (en) | Apparatus for vulcanizing rubber tires | |
| CN110015837A (en) | A kind of integrated form station mould pressing method | |
| CN210945342U (en) | Forming equipment for inverted glass cover plate | |
| CN108751675B (en) | Glass bottle manufacturing device and using method thereof | |
| CN109160717A (en) | A kind of integrated form station mould pressing method | |
| CN107825245A (en) | A kind of deburring burnishing device of plastic products | |
| CN110759633A (en) | Forming method and forming equipment for inverted-buckle type glass cover plate | |
| CN106517754B (en) | Automatic shaping machine for LED lamp glass shell | |
| CN110482848B (en) | Full-automatic glass bottom sealing and tire blowing integrated machine and tire blowing method thereof | |
| CN204172248U (en) | A kind of double-colored slush molding machine | |
| CN216423248U (en) | Clamp device for injection molding machine | |
| CN109551733A (en) | A kind of constant temperature Plastic injection mould for mobile phone shell | |
| CN214927071U (en) | Automatic thermal shrinkable sleeve pipe expander | |
| CN111070641A (en) | Blow molding device used for manufacturing plastic barrel and convenient to clamp | |
| CN104354085B (en) | A kind of automation grinding and polishing equipment for working flat plate class non-conventional glass component | |
| CN210256657U (en) | Follow-up deburring shaping device of ceramic forming | |
| CN209755857U (en) | lifting and overturning movement device for slush molding die | |
| CN101891370A (en) | Intelligent and automatic bulb-blowing machine and production process for glass lamp shade | |
| CN208747918U (en) | A kind of integrated form molding apparatus | |
| CN207724687U (en) | A kind of production system of polyurethane table tennis | |
| KR20150092457A (en) | Glass-forming device | |
| CN116811087B (en) | Automatic trimming device for resin artwork production | |
| CN215712587U (en) | Multi-station high-efficiency centrifuge with cover plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |