CN103553307B - A kind of method and apparatus of bending glass sheet - Google Patents
A kind of method and apparatus of bending glass sheet Download PDFInfo
- Publication number
- CN103553307B CN103553307B CN201310460532.9A CN201310460532A CN103553307B CN 103553307 B CN103553307 B CN 103553307B CN 201310460532 A CN201310460532 A CN 201310460532A CN 103553307 B CN103553307 B CN 103553307B
- Authority
- CN
- China
- Prior art keywords
- glass
- moving part
- sheet
- upper press
- sheet glass
- 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.)
- Active
Links
Landscapes
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The present invention relates to the brake forming technical field of sheet glass, a kind of method being applicable to the bending glass sheet of vehicle glass compression moulding is particularly provided, a kind of device applying the method bending glass sheet is further also provided.The method and device comprise process furnace, transport sector, upper press punch and lower press die, and wherein upper press punch comprises body part and moving part.The method and apparatus of the bending glass sheet that the present invention adopts, by the moving part of upper press punch first to fringe region capable compacting premolding sheet glass easily producing fold, thus the generation of elimination fold is to improve refractive power effect or the optical quality of sheet glass; This moving part finally finally suppresses brake forming in conjunction with lower press die to sheet glass together with the body part of upper press punch simultaneously, this upper press punch possesses the function of premolding and final brake forming simultaneously, reduce the complicacy of the device of bending glass sheet, thus reduce production cost.
Description
Technical field:
The present invention relates to the brake forming technical field of sheet glass, a kind of method being applicable to the bending glass sheet of vehicle glass compression moulding is particularly provided, a kind of device applying the method bending glass sheet is further also provided.
Background technology:
Along with automobile main frame maker and the requirement of human consumer to the aspect such as outward appearance, optical quality of vehicle glass more and more higher, the method of traditional gravity bending glass sheets has been difficult to meet this more and more higher requirement, therefore adopts the method for compacting bending glass sheet in actual production more and more.Wherein, the method for gravity bending glass sheets to comprise glass sheet support on the curved frames close with final molding shape or mould, then by sheet glass sends that process furnace carries out heating, final sheet glass makes its edge and curved frames or mould fit gradually by the gravity of self after softening and bends to the steps such as the shape of specifying to; The method of compacting bending glass sheet comprises heating and soften glass plate, send sheet glass to shaping area by horizontal transmission apparatus and be arranged at and have on the lower press die of spill molded surface, finally have the upper press punch of convex molded surface and lower press die move toward one another to laminated glass to realize the steps such as final brake forming.
Fig. 1 and Fig. 2 shows the method for traditional compacting bending glass sheet and device used thereof: sheet glass 001 is transported in brake forming district 004 by horizontal transport roller-way 002 after process furnace 003 thermoplastic; In brake forming district 004, the lower press die 006 that temperature is generally through horizontal transport roller-way 002 at the sheet glass 001 of 600 DEG C ~ 650 DEG C holds up and moves upward together; Upper press punch 005 contacts with sheet glass upper surface, and has extruded compacting brake forming to sheet glass together with lower press die 006; The sheet glass 001 completing compacting brake forming is transported to subsequent processing to carry out cooling or tempering.For the sheet glass that crooked radian and profile are not too complicated, use above-mentioned traditional compacting bending and molding method can bend the requirement meeting profile and optical quality, the method is specially adapted to the brake forming of monolithic or biplate sheet glass.But, along with the progress of Automobile Design technique, the quasi spline of vehicle glass trends towards more complicated, particularly the sheet glass that 80mm or bending sphere be greater than 15mm is greater than for sagitta, if having some setbacks of the radius-of-curvature transition of short side direction, just easily produce fold as shown in the S1 region in Fig. 3 and S2 region, at this moment adopt traditional compacting bending and molding method can not solve this technical problem well.
As everyone knows, for the flexible plate object of any a slice, bend if carry out unidirectional (cylinder), be then not easy to produce fold; Bend if carry out two-way (sphere), and when this plate object does not have a mobility, fold will be produced in certain region of edge, this spherical curve could be realized.More easily produce gauffer near the region of sheet glass edge, so, for the sheet glass of monolithic compacting brake forming, producing the region of fold, easily produce optical defect, after particularly biplate glass being closed sheet, its optical defect is more obvious.
In order to solve edge buckling problems in two-way (sphere) BENDING PROCESS, Chinese patent CN1651345A discloses a kind of glass sheet forming method and device, sheet glass is first heated to flexure temperature by the method in horizontal kiln, then transmit into torture chamber by plate transfer mechanism, the room temperature being substantially equal to flexure temperature is kept in torture chamber, sheet glass formed the blank with spherical curvature state before compression moulding, and described blank has not extensible shape; At preliminary formative stage, the centre portions of sheet glass does not carry out any contact with punch, due to the effect of gravity, may occur elongation stress at centre portions, and this can cause centre portions to extend; Meanwhile, the material close to glass plate edge may flow towards the direction of centre portions, thus can not form unnecessary waviness during sheet glass againsts punch compacting.The shortcoming of the method is: sheet glass must bend under very high flexure temperature, and the preliminary formative stage before compression moulding solves edge buckling problems by the effect of gravity, causes quality control unstable; Simultaneously, owing to must run in the torture chamber of high temperature for the punch of compression moulding and die, easily there is distortion in punch and die, the matching of punch and die is made to be difficult to control, higher requirement is had to the temperature tolerance of mould, make the method be only applicable to compression moulding in stove and not be suitable for compression moulding outside stove, application has certain limitation.
Similarly, Chinese patent CN1531510A discloses a kind of method and apparatus for bending to glass port, window glass first heats at its softening temperature by the method, then be arranged on a curved frames also under gravity by prebuckling, being transferred to by the window glass of prebuckling has on the suction bending mould of spill molded surface again, by applying to press down during predetermined for some time, intermediate space external suction air between the mould that lower surface and the suction of the window glass be arranged on lower position bend, and this window glass is extruded by the barometric point on the spill molded surface of suction bending mould.
Also have, Chinese patent CN1768013A discloses a kind of method and apparatus of curved glass window, window glass first heats with flexure temperature by the method in a stove, then window glass to be in convex that a bow framework and one has a solid surface between model, the finished surface of this bow framework depicts the profile less than the outside dimension of this window glass, this window glass is the pressurized profile making described window glass at least have model on this in some positions between this curved frames and upper model, this step is the first extruding bending step, again by the final curved frames of frame shape and the outstanding boundary region contacts of window glass, the finished surface of this final curved frames corresponds to the restriction shape of described window glass, window glass to bear against on this on model, this step is the second extruding bending step.
In addition, Chinese patent CN1518524A, CN1572734 and US Patent No. 20040244424A1 all relates to the method for bending glass sheet, wherein at press bending station, transporting rail is not in horizontal distribution, but get on the right track in glass vertical direction there is different height, sheet glass is prebended into close to circular cone or cylindrical shape, the method mentioned in these patents is all bent in advance in transmitting procedure by sheet glass, make sheet glass in one direction close to the final curved shape of sheet glass, then final compacting brake forming is carried out to sheet glass.
The method of above-described bending glass sheet is all that sheet glass is carried out prebuckling before compaction, make the curved shape that sheet glass reaches preliminary, and then be pressed, but these methods can not change the final compression moulding mode of sheet glass, so inevitably cause the generation of sheet glass edge fold.Meanwhile, according to practical production experience, the sheet glass that 80mm or bending sphere be greater than 15mm is greater than for sagitta, uses common compression moulding mode easily to cause edge gauffer and the optical quality problem of sheet glass.
Summary of the invention:
Technical problem to be solved by this invention be for above-mentioned existing bending glass sheet method exist can not solve sheet glass edge gauffer problem and easily cause the deficiencies such as optical quality problem, a kind of method of bending glass sheet eliminated sheet glass edge gauffer and improve optical quality is provided, a kind of device applying the method bending glass sheet is also provided simultaneously.
The present invention solves the technical scheme that its technical problem takes: a kind of method of bending glass sheet, and the method comprises the following steps:
Step 1: heating and soften glass plate in process furnace;
Step 2: the sheet glass be heated to soften is transported into brake forming district by transport sector;
Step 3: the lower press die in brake forming district moves to the direction of upper press punch and holds up the sheet glass be heated to soften;
Step 4: upper press punch arranges moving part and carries out compacting premolding to the edge section at least of the sheet glass on lower press die;
Step 5: lower press die continues to move to the direction of upper press punch, the moving part of upper press punch also moves to the direction of upper press punch simultaneously, finally makes upper press punch form the convex molded surface matched with the concave surface of final bending glass sheet;
Step 6: the spill molded surface of convex molded surface and lower press die extrudes sheet glass in opposite directions to complete the compacting brake forming of sheet glass net shape;
Step 7: the sheet glass of final brake forming is sent to subsequent processing and carries out cooling or tempering.
Further, in step 4, compacting premolding is carried out in the edge section of moving part to both sides relative on sheet glass of upper press punch.
Further, in step 4, the moving part of upper press punch on sheet glass at least the edge section on both sides synchronously carry out compacting premolding.
Further, in step 4, the moving part of upper press punch on sheet glass at least the edge section on both sides successively carry out compacting premolding.
Further, in step 5, convex molded surface is made up of the movable convex bottom surface of moving part and the body convex bottom surface of body part.
Further, in step 5, the speed that the moving part of upper press punch moves to the direction of upper press punch is less than or equal to the speed that lower press die moves to the direction of upper press punch.
Further, upper press punch direction from moving part to upper press punch motion driven by lower press die or driven by driving mechanism.
Further, before the moving part of upper press punch carries out compacting brake forming to sheet glass, the movable convex bottom surface of moving part than the body convex bottom surface of body part closer to lower press die.
Further, add between described step 2 and described step 3 and a supporting die is set moves upward prior to lower press die the sheet glass be heated to soften to be held up and depart from transport sector carry out preliminary bending step.
Simultaneously, the present invention also provides a kind of device of bending glass sheet, this device comprises for heating the process furnace with soften glass plate, for transporting the transport sector of sheet glass, the upper press punch shaping for pressed glass plate benging and lower press die, described lower press die has the spill molded surface matched with the convex surface of final bending glass sheet, it is characterized in that: described upper press punch comprises body part and moving part, the wherein middle body of the corresponding sheet glass of body part and the concave surface with curved shape final with the middle body body convex bottom surface of matching, the movable convex bottom surface that the edge section of the corresponding sheet glass of moving part and the concave surface with curved shape final with edge section match, body convex bottom surface forms the convex molded surface on full surface together with movable convex bottom surface, and described convex molded surface matches with the concave surface of final bending glass sheet, in brake forming process, moving part carries out compacting premolding prior to body part to sheet glass.
Further, described moving part is freely sagging under self-gravity action, and lower press die moves to the direction of upper press punch together with moving part with sheet glass.
Further, described moving part is also provided with driving mechanism, described driving mechanism drives moving part lifting, and driving mechanism rises speed from moving part to the direction of upper press punch is less than or equal to the speed that lower press die moves to the direction of upper press punch with sheet glass.
Further, described driving mechanism is made up of motor, reduction box and ball-screw, or is selected from the one in cylinder and hydro-cylinder.
Further, the moving part of upper press punch is distributed at least side of body part, and the edge section at least of corresponding sheet glass.
Further, the moving part of upper press punch is distributed in the both sides of body part, and the edge section on the relative both sides of corresponding sheet glass.
Further, the moving part Integral synchronous lifting of edge section, corresponding sheet glass each limit or successively lifting separately.
Further, the body part of upper press punch and moving part are provided with the multiple vacuum holes of inleakage to convex molded surface.
The present invention is owing to taking technique scheme, and it has following beneficial effect:
The method and apparatus of the bending glass sheet that the present invention adopts, by the moving part of upper press punch first to fringe region capable compacting premolding sheet glass easily producing fold, thus the generation of elimination fold is to improve refractive power effect or the optical quality of sheet glass; This moving part finally finally suppresses brake forming in conjunction with lower press die to sheet glass together with the body part of upper press punch simultaneously, this upper press punch possesses the function of premolding and final brake forming simultaneously, reduce the complicacy of the device of bending glass sheet, thus reduce production cost.
Accompanying drawing illustrates:
Fig. 1 is the device schematic diagram of traditional compacting curved glass sheet metal forming;
Fig. 2 is the process schematic of the method for traditional compacting curved glass sheet metal forming;
Fig. 3 is the schematic diagram that the method for traditional compacting bending glass sheet causes glass plate edge fold;
Fig. 4 is the structural representation of the device of bending glass sheet in the present invention;
Schematic diagram when Fig. 5 is the movable convex bottom surface of contact glass sheet moving part in the present invention;
Fig. 6 is schematic diagram when body convex bottom surface and movable convex bottom surface form convex molded surface in the present invention;
Fig. 7 is the upward view of the upper press punch of the corresponding sheet glass dual-side of moving part in the present invention;
Fig. 8 is the upward view that in the present invention, moving part does not carry out upper press punch when suppressing premolding to sheet glass;
The upward view of upper press punch when Fig. 9 is final compression moulding in the present invention;
Figure 10 is the upward view of the upper press punch on the corresponding sheet glass arc minor face of moving part and the long limit of arc in the present invention;
Figure 11 is the upward view of the upper press punch of moving part corresponding sheet glass arc minor face in the present invention;
Figure 12 is the upward view of the upper press punch of the corresponding long limit of sheet glass arc of moving part and dual-side in the present invention;
Figure 13 is the upward view of the upper press punch on corresponding sheet glass four limit of moving part in the present invention;
In Figure 14 the present invention, sheet glass enters the schematic diagram of subsequent processing after having suppressed;
In figure: 1, process furnace; 2, transport sector; 3, brake forming district; 4, upper press punch; 5, lower press die; 6, back and forth pick ring; 41, body part; 42, moving part; 43, driving mechanism; 001, sheet glass; 002, horizontal transport roller-way; 003, process furnace; 004, brake forming district; 005, upper press punch; 006, lower press die.
Embodiment:
Below in conjunction with accompanying drawing, content of the present invention is described further.
As shown in Figure 4, simply illustrate that sheet glass 001 accepts to heat and softening step, by transport sector 2 sheet glass 001 be heated to soften transported out process furnace 1 and transport the step into brake forming district 3 in process furnace 1 by skeleton construction, and be suitable for the composition structure of device of the bending glass sheet applying the inventive method.The described device being suitable for the bending glass sheet applying the inventive method comprises for heating the process furnace 1 with soften glass plate, for transporting the transport sector 2 of sheet glass, the upper press punch 4 shaping for pressed glass plate benging and lower press die 5, described lower press die 5 has the spill molded surface matched with the convex surface of final bending glass sheet.Wherein, illustrated transport sector 2 is horizontal transport roller-way, is understandable that, is not limited thereto, and can be used in the transport sector 2 transporting the sheet glass 001 be heated to soften, such as ring-type transmission shuttle, air cushion transmitting device etc.Wherein, described lower press die 5 can be ring-type die, can be also complete surperficial die, specifically select with actual needs.
In the diagram, described upper press punch 4 comprises body part 41 and moving part 42, wherein the middle body of the corresponding sheet glass 001 of body part 41, and the body convex bottom surface that the concave surface with curved shape final with middle body matches; The edge section of the corresponding sheet glass 001 of moving part 42, and the movable convex bottom surface that the concave surface with curved shape final with edge section matches; Body convex bottom surface forms the convex molded surface on full surface together with movable convex bottom surface, and described convex molded surface matches with the concave surface of final bending glass sheet; In brake forming process, moving part carries out compacting premolding prior to body part to sheet glass.
As shown in Figure 5, in brake forming district 3, when sheet glass 001 transfers to directly over lower press die 5, lower press die 5 is rapidly to the direction motion of upper press punch 4, thus hold up the sheet glass 001 be heated to soften, sheet glass 001 moves to the direction of upper press punch 4 together along with lower press die 5 subsequently, due to the movable convex bottom surface of moving part 42 than the body convex bottom surface of body part 41 closer to lower press die 5, so move together with sheet glass 001 along with lower press die 5, sheet glass 001 first touches the movable convex bottom surface of moving part 42, moving part 42 extrudes the edge section of sheet glass together with lower press die 5, moving part 42 carries out compacting premolding prior to body part 41 pairs of sheet glass 001 thus.
Further, in order to reduce the duration of contact of sheet glass and transport sector 2 (such as horizontal transport roller-way etc.), eliminate the vestige of transport sector 2, and improve outward appearance and the optical quality of final bending glass sheet further, before holding up at lower press die 5 sheet glass 001 be heated to soften, be similar to Chinese patent CN102173568 (B) claimed technical scheme such, arrange a supporting die (not shown in the present invention) to move upward prior to lower press die 5 sheet glass 001 be heated to soften to be held up and depart from transport sector 2 and carry out preliminary bending step, detailed technology parameter and facilities can with reference to contents disclosed in CN102173568 (B), no longer be described in further detail in the present invention.
As shown in Figure 6, after sheet glass 001 contacts the movable convex bottom surface of moving part 42, lower press die 5 continues to move to the direction of upper press punch 4 with sheet glass 001, moving part 42 also moves to the direction of upper press punch 4 and keeps the extruding to sheet glass 001 together simultaneously, the movable convex bottom surface of final moving part 42 forms the convex molded surface on full surface together with the body convex bottom surface of body part 41, described convex molded surface matches with the concave surface of final bending glass sheet, sheet glass 001 completes and finally suppresses brake forming between described convex molded surface and the spill molded surface of lower press die 5.
Wherein, moving part 42 can not arrange driving mechanism and freely sagging under self-gravity action, such as moving part 42 is arranged on below the elastomeric element such as guide pillar and spring, makes its movable convex bottom surface than the body convex bottom surface of body part 41 closer to lower press die 5.In this case, after sheet glass 001 contacts with movable convex bottom surface, lower press die 5 moves to the direction of upper press punch 4 with sheet glass 001 and moving part 42 together, until the movable convex bottom surface of moving part 42 forms the convex molded surface on full surface together with the body convex bottom surface of body part 41; In this process, the speed that moving part 42 moves is consistent with the speed that lower press die 5 moves with sheet glass 001 together, the extruding producing the edge section to sheet glass from gravity together with lower press die 5 of moving part 42.
Wherein, moving part 42 also can arrange driving mechanism 43, be elevated under the effect of driving mechanism 43, during original state, driving mechanism 43 is fallen moving part 42 and is made its movable convex bottom surface than the body convex bottom surface of body part 41 closer to lower press die 5.In this case, after sheet glass 001 contacts with movable convex bottom surface, lower press die 5 continues to move to the direction of upper press punch 4 with sheet glass 001 together, simultaneously driving mechanism 43 starts to rise moving part 42 and makes it move to the direction of upper press punch 4, until the movable convex bottom surface of moving part 42 forms complete surperficial convex molded surface together with the body convex bottom surface of body part 41 simultaneously; In this process, the speed that driving mechanism 43 rises moving part 42 is less than or equal to the speed that lower press die 5 moves with sheet glass 001.When the speed that driving mechanism 43 rises moving part 42 equals the speed that lower press die 5 moves with sheet glass 001, in this process, the extruding degree that moving part 42 produces the edge section of sheet glass together with lower press die 5 is constant; When the speed that driving mechanism 43 rises moving part 42 is less than the speed that lower press die 5 moves with sheet glass 001, in this process, moving part 42 increases the extruding degree that the edge section of sheet glass produces together with lower press die 5; In fact the degree that extrudes is constant or increases, and needs according to actual production situation or design conditions and selects.
Above-mentioned driving mechanism 43 can be made up of motor, reduction box and ball-screw, also can be cylinder or hydro-cylinder; When described driving mechanism 43 is made up of motor, reduction box and ball-screw, the motor shaft of described motor connects the input shaft of described reduction box, the output shaft of described reduction box connects the screw rod of described ball-screw, and the nut of described ball-screw is fixedly connected with described moving part 42; When described driving mechanism 43 be cylinder or hydro-cylinder time, described moving part 42 is fixed on the top of the piston rod of described cylinder or hydro-cylinder.
In the present invention, the moving part 42 of upper press punch 4 is distributed at least side of body part 41, is also the edge section at least of the corresponding sheet glass 001 of described moving part 42.As shown in Figure 7, moving part 42 is distributed in the both sides of body part 41, and the dual-side of corresponding sheet glass 001, now moving part 42 is mainly used in carrying out compacting premolding to the dual-side of sheet glass 001 in the process of bending glass sheet 001, to eliminate issuable fold on sheet glass 001 dual-side.As shown in Figure 8, when moving part 42 does not carry out compacting premolding to sheet glass 001, the movable convex bottom surface of moving part 42 than the body convex bottom surface of body part 41 closer to lower press die 5, show that arranging like this is to make moving part 42 carry out compacting premolding prior to the dual-side of body part 41 pairs of sheet glass 001 for the movable convex bottom surface of moving part 42 is lower than the body convex bottom surface of body part 41 in the drawings.As shown in Figure 9, when final compression moulding will be carried out, the movable convex bottom surface of moving part 42 is risen to forms consistent the seamlessly transitting of tangent line with the body convex bottom surface of body part 41, thus the body convex bottom surface of the movable convex bottom surface of moving part 42 and body part 41 forms the convex molded surface on full surface, this convex molded surface matches with the concave surface of final bending glass sheet, when final compression moulding, this convex molded surface completes the final compacting brake forming of sheet glass 001 together with lower press die 5.Similarly, as shown in Figure 10, moving part 42 also can the arc minor face of corresponding sheet glass 001 and the long limit of arc, now moving part 42 is mainly used in carrying out compacting premolding to the arc minor face of sheet glass 001 and the long limit of arc in the process of bending glass sheet 001, to eliminate issuable fold on sheet glass 001 arc minor face and the long limit of arc.Certainly, be understandable that, moving part 42 also can be designed to any both sides of corresponding sheet glass 001 according to actual needs.
As shown in figure 11, moving part 42 can be distributed in the side of body part 41, and the arc minor face of corresponding sheet glass 001, now moving part 42 is mainly used in carrying out compacting premolding to the arc minor face of sheet glass 001 in the process of bending glass sheet 001, to eliminate issuable fold on sheet glass 001 arc minor face.But be understandable that, be not limited thereto, in actual production design, according to the different shapes of sheet glass 001, moving part 42 can be designed any of corresponding sheet glass 001.
As shown in figure 12, moving part 42 can be distributed in three sides of body part 41, and the long limit of arc of corresponding sheet glass 001 and dual-side, now moving part 42 is mainly used in carrying out compacting premolding to the long limit of the arc of sheet glass 001 and dual-side in the process of bending glass sheet 001, to eliminate issuable fold on the long limit of sheet glass 001 arc and dual-side.But be understandable that, be not limited thereto, in actual production design, according to the different shapes of sheet glass 001, moving part 42 can be designed any three limits of corresponding sheet glass 001.
As shown in figure 13, moving part 42 is distributed in four sides of body part 41, and the edge section on four limits of corresponding sheet glass 001, now moving part 42 for carrying out compacting premolding to four limits of sheet glass 001 in the process of bending glass sheet 001, to eliminate issuable fold on sheet glass 001 4 limit.
In the present invention, on moving part 42 pairs of sheet glass 001 of upper press punch 4, at least compacting premolding is synchronously carried out in the edge section on both sides, namely, when needing to carry out compacting premolding to the edge section on both sides on sheet glass 001, three limits or four limits, the moving part 42 corresponding to both sides on sheet glass 001, three limits or four limits is suppressed each limit of sheet glass 001 simultaneously; Simultaneously, on moving part 42 pairs of sheet glass 001 of upper press punch 4, compacting premolding is successively carried out in the edge section of corresponding edge, namely when needing to carry out compacting premolding to the edge section on both sides on sheet glass 001, three limits or four limits, first moving part 42 corresponding to both sides on sheet glass 001, three limits or four limits suppresses a limit wherein or two limits, suppress other limit again, comparatively complicated gauffer can be carried out step by step compacting like this and eliminate.
In the present invention, the body part 41 of upper press punch 4 and moving part 42 all can be provided with the multiple vacuum holes of inleakage to convex molded surface, these vacuum holes are connected in vacuum negative source, this negative source produces vacuum and on the one hand makes bending glass sheet be sucked into make thermoplastic sheet glass fully form net shape on the shaping surface of convex, is drawn into by bending glass sheet on the other hand and the shaping surface of convex keeps for some time be that lower press die resets and bending glass sheet is transferred to subsequent processing and prepares.
As shown in figure 14, after upper press punch 4 and lower press die 5 complete compacting to pressure mutually, being pressed bending sheet glass continues to be attracted on the shaping surface of convex that formed together with the body convex bottom surface of body part 41 by the movable convex bottom surface of moving part 42, lower press die 5 moves downward the starting position got back to below transport sector 2 transport plane, the sheet glass with final curved shape continues to be attracted on the shaping surface of convex and keeps for some time, then one back and forth pick ring 6 and enter in shaping area 3 immediately below the sheet glass that arrives and be adsorbed on the shaping surface of convex, stop the generation of negative pressure, bending glass sheet drops on back and forth to be picked on ring 6, back and forth pick ring 6 bending sheet glass to be sent to next process and to carry out cooling or tempering.
In the present invention, the up-and-down movement of the moving part 42 of upper press punch 4 and the control of rising or falling speed and timing node thereof are controlled in conjunction with pilot circuit by driving mechanism or lower press die 5, ensure that the compacting premolding of moving part 42 pairs of sheet glass and the execution of other actions, reach and control more accurately.Further, the lifting of moving part Integral synchronous or the successively lifting separately of edge section, corresponding sheet glass each limit can be set as required.
Method and apparatus involved in the present invention be specially adapted to sheet glass finally bending sagitta be greater than the bending glass sheet that 80mm or bending sphere be greater than the sheet glass of 15mm, and the radian that final bending sheet glass is formed is compound bending.
Middle and lower part of the present invention compacting die 5 and back and forth pick ring 6 and even be provided with moving part 42 self-movement toward each other of driving mechanism 43, its relevant drive unit and next cools or tempering station does not specifically illustrate in the present embodiment and each accompanying drawing.
The method and apparatus of above content to a kind of bending glass sheet of the present invention specifically describes; but the present invention is not by the limitation of embodiment content described above; the any improvement carried out according to technical essential of the present invention so all, equivalent modifications and replacement etc., all belong to the scope of protection of the invention.
Claims (17)
1. a method for bending glass sheet, comprises the following steps:
Step 1: heating and soften glass plate in process furnace;
Step 2: the sheet glass be heated to soften is transported into brake forming district by transport sector;
Step 3: the lower press die in brake forming district moves to the direction of upper press punch and holds up the sheet glass be heated to soften;
Step 4: upper press punch arranges moving part and carries out compacting premolding to the edge section at least of the sheet glass on lower press die;
Step 5: lower press die continues to move to the direction of upper press punch, the moving part of upper press punch also moves to the direction of upper press punch simultaneously, finally makes upper press punch form the convex molded surface matched with the concave surface of final bending glass sheet;
Step 6: the spill molded surface of convex molded surface and lower press die extrudes sheet glass in opposite directions to complete the compacting brake forming of sheet glass net shape;
Step 7: the sheet glass of final brake forming is sent to subsequent processing and carries out cooling or tempering.
2. the method for bending glass sheet according to claim 1, is characterized in that: in step 4, and compacting premolding is carried out in the edge section of moving part to both sides relative on sheet glass of upper press punch.
3. the method for bending glass sheet according to claim 1, is characterized in that: in step 4, the moving part of upper press punch on sheet glass at least the edge section on both sides synchronously carry out compacting premolding.
4. the method for bending glass sheet according to claim 1, is characterized in that: in step 4, the moving part of upper press punch on sheet glass at least the edge section on both sides successively carry out compacting premolding.
5. the method for bending glass sheet according to claim 1, is characterized in that: in step 5, and convex molded surface is made up of the movable convex bottom surface of moving part and the body convex bottom surface of body part.
6. the method for bending glass sheet according to claim 1, it is characterized in that: in step 5, the speed that the moving part of upper press punch moves to the direction of upper press punch is less than or equal to the speed that lower press die moves to the direction of upper press punch.
7. the method for bending glass sheet according to claim 1, is characterized in that: the moving part of upper press punch is driven to the direction motion of upper press punch by lower press die or driven by driving mechanism.
8. the method for bending glass sheet according to claim 1, it is characterized in that: before the moving part of upper press punch carries out compacting brake forming to sheet glass, the movable convex bottom surface of moving part than the body convex bottom surface of body part closer to lower press die.
9. the method for bending glass sheet according to claim 1, is characterized in that: add between described step 2 and described step 3 and arrange a supporting die and move upward to be held up by the sheet glass be heated to soften prior to lower press die and depart from transport sector carry out preliminary bending step.
10. the method for bending glass sheet according to claim 1, is characterized in that: the sagitta of the sheet glass of final brake forming is greater than 80mm or bending sphere is greater than 15mm.
The device of 11. 1 kinds of bending glass sheets, comprise for heat with the process furnace of soften glass plate, for transport sheet glass transport sector, for the shaping upper press punch of pressed glass plate benging and lower press die, described lower press die has the spill molded surface matched with the convex surface of final bending glass sheet, it is characterized in that: described upper press punch comprises body part and moving part, wherein the middle body of the corresponding sheet glass of body part and the concave surface with curved shape final with the middle body body convex bottom surface of matching; Moving part is distributed at least side of body part, and the edge section at least of corresponding sheet glass, and the movable convex bottom surface that the concave surface with curved shape final with edge section matches; Body convex bottom surface forms the convex molded surface on full surface together with movable convex bottom surface, and described convex molded surface matches with the concave surface of final bending glass sheet; In brake forming process, moving part carries out compacting premolding prior to body part to sheet glass.
The device of 12. bending glass sheets according to claim 11, is characterized in that: described moving part is freely sagging under self-gravity action, and lower press die moves to the direction of upper press punch together with moving part with sheet glass.
The device of 13. bending glass sheets according to claim 11, it is characterized in that: described moving part is also provided with driving mechanism, described driving mechanism drives moving part lifting, and driving mechanism rises speed from moving part to the direction of upper press punch is less than or equal to the speed that lower press die moves to the direction of upper press punch with sheet glass.
The device of 14. bending glass sheets according to claim 13, is characterized in that: described driving mechanism is made up of motor, reduction box and ball-screw, or is selected from the one in cylinder and hydro-cylinder.
The device of 15. bending glass sheets according to claim 11, is characterized in that: the moving part of upper press punch is distributed in the both sides of body part, and the edge section on the relative both sides of corresponding sheet glass.
The device of 16. bending glass sheets according to claim 11, is characterized in that: the moving part Integral synchronous lifting of edge section, corresponding sheet glass each limit or successively lifting separately.
The device of 17. bending glass sheets according to claim 11, is characterized in that: the body part of upper press punch and moving part are provided with the multiple vacuum holes of inleakage to convex molded surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460532.9A CN103553307B (en) | 2013-09-30 | 2013-09-30 | A kind of method and apparatus of bending glass sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460532.9A CN103553307B (en) | 2013-09-30 | 2013-09-30 | A kind of method and apparatus of bending glass sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103553307A CN103553307A (en) | 2014-02-05 |
| CN103553307B true CN103553307B (en) | 2015-11-18 |
Family
ID=50007728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310460532.9A Active CN103553307B (en) | 2013-09-30 | 2013-09-30 | A kind of method and apparatus of bending glass sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103553307B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3037946A1 (en) * | 2015-06-25 | 2016-12-30 | Saint Gobain | DEVICE FOR DETECTING THE POSITION OF GLASS SHEETS |
| CN105060688B (en) * | 2015-08-25 | 2017-07-18 | 武汉武耀安全玻璃股份有限公司 | The bending forming processing device and processing method of safety glass |
| CN109987827B (en) * | 2019-05-15 | 2024-03-19 | 福耀集团（上海）汽车玻璃有限公司 | Forming device |
| CN114163113B (en) * | 2021-11-30 | 2023-03-28 | 福耀玻璃工业集团股份有限公司 | Concave die, forming die, glass forming system and glass forming method |
| CN115557679B (en) * | 2022-07-21 | 2024-02-27 | 福耀玻璃工业集团股份有限公司 | Glass compression molding system, compression molding die and compression molding method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5437703A (en) * | 1993-03-03 | 1995-08-01 | Pilkington Glass Limited | Bending glass sheets |
| CN102173568A (en) * | 2011-02-18 | 2011-09-07 | 福耀玻璃工业集团股份有限公司 | Method and device for bending glass plate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1513776A2 (en) * | 2002-06-17 | 2005-03-16 | Nippon Sheet Glass Co., Ltd. | Apparatus and method for producing a glass sheet bent in two directions |
-
2013
- 2013-09-30 CN CN201310460532.9A patent/CN103553307B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5437703A (en) * | 1993-03-03 | 1995-08-01 | Pilkington Glass Limited | Bending glass sheets |
| CN102173568A (en) * | 2011-02-18 | 2011-09-07 | 福耀玻璃工业集团股份有限公司 | Method and device for bending glass plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103553307A (en) | 2014-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102173568B (en) | Method and device for bending glass plate | |
| CN103553307B (en) | A kind of method and apparatus of bending glass sheet | |
| CN103237770B (en) | For the method and apparatus of cambering glass sheets | |
| CN1309669C (en) | Method and device for bending glass panes in pairs | |
| CN204111583U (en) | The outer press-moulding die of a kind of follow-on automobile sandwich-glass stove | |
| CN107001135B (en) | Method for producing laminated glass | |
| CN104860514A (en) | Production technology for hot bending of bent glass | |
| CN1956929A (en) | Sheet bending apparatus using vaccum device and method thereof | |
| CN103803779A (en) | Protective glass cover forming device for mobile phone and mold for forming | |
| CN101987774B (en) | Device and method for molding and tempering hyperbolic glass | |
| CN105366918A (en) | Ultrasonic vibration-assisted mould pressing forming method based on tin liquid medium and special forming device thereof | |
| CN206318869U (en) | A kind of hot-bending machine of shaping station pressing structure | |
| CN105366917A (en) | Technological method for assisting in die forming of microstructural thin glass element through tin liquor | |
| CN102795760B (en) | Novel automobile sandwich glass compression moulding die | |
| CN205398446U (en) | Hyperboloid toughened glass former | |
| CN105502903A (en) | Tempering and forming device of hole-digging and bending glass plate | |
| CN2793071Y (en) | Arch bending formation mould of glass board | |
| CN109896730B (en) | Glass hot bending forming method and device | |
| CN205328855U (en) | Continuous forming device of three -dimensional model glass | |
| CN207581655U (en) | A kind of stamper architecture of 3D glass heats bender | |
| CN202744446U (en) | Novel automobile interlayer glass press forming die | |
| CN201501827U (en) | Device for molding and steeling hyperbolic glass | |
| CN103240864A (en) | Automobile carpet hot-press molding method | |
| CN104193154B (en) | Improved mold for out-of-furnace press forming of automobile laminated glass | |
| CN206188630U (en) | Curved surface glass hot -bend forming device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |