Glass bending mold
[technical field]
The utility model is about a kind of sheet glass manufacture field, particularly about a kind of mould of bending glass sheet.
[background technology]
Traditional shaping glass sheets method be with glass sheet support on curved frames or mould, the gravity by sheet glass self carries out bending, thereby forms the net shape of sheet glass.The moulding of this kind gravity has the border structure approaching with the final curved shape of sheet glass with bending mould.Sheet glass is placed in substantially horizontal mode on the periphery of frame of bending mould, the sheet glass of Zhi Chenging generally divides several formative stages according to differing temps by a bending furnace by this way.First stage is generally the preheating zone, be heated to temperature at the preheating zone sheet glass near the sheet glass softening temperature, the next stage is a shaping area, sheet glass is heated to 560 ℃-650 ℃ temperature there, the bending gradually owing to action of gravity then, sheet glass is complementary to reach desired curvature in the shape of periphery place and framework, and the last stage is the annealing cooling zone, sheet glass is annealed cooling, thereby just they can be removed from forming mould when leaving bending furnace.
The above-mentioned glass bending forming mould that is used for generally comprises a pedestal and a shaping frame, this shaping frame can be the framework of an overall fixed on this pedestal, also can comprise a pair of decide moulding limit and a pair of moving moulding limit, decide the moulding limit and be fixed on the pedestal long limit as this shaping frame, moving moulding limit is movably connected on this and decides the moulding limit, as the minor face of this shaping frame, and should moving moulding limit fix a balance flank that has a weight.The middle part is by decide the moulding edge forming when brake forming for big sheet glass, and the two ends sheet glass is after softening, and under the cooperation of weight, flank drives moving moulding limit and makes progress the continuous brake forming of sheet glass gradually around tie point.
The mould of said structure can cause following problem in the sheet glass process of producing big radian, big sphere: 1. mold-mart is obvious: for the bigger sheet glass of sinuousness, big many of the size of its development size after than bending, therefore when sheet glass last slice, the contact position of glass and mould is just far apart from glass plate edge, like this when sheet glass softens moulding, sheet glass is just very long by the distance that the contact position slides into the edge, thereby cause the large-area slip vestige of sheet glass, influence the visual appearance of sheet glass; 2. the goodness of fit is uncontrollable: for the bigger sheet glass of side camber, length direction arch height ratio, easily produce flounce at the side of sheet glass, this has influenced the entrucking performance of sheet glass; 3. the sheet glass that the side sphere is big can't moulding: when the side sphere is very big, in the crooked initial stage, this part need be protruded greatly, when sheet glass is placed on the mould, the convex part sheet glass does not support because of having, sheet glass is softening when bending, and meeting is under the action of gravity of self, and is sagging to the opposite direction of normal curvature direction; 4. the reverse sphere in bight: long limit or side edge shape for the bight change rapid glass, and the bight is easy to generate reverse sphere; 5. optical property is not good: because the influence of factors such as glass sheet shape, mould anchorage force, glass sheet temperatures difference, the glass spherical transition that the center sphere is bigger has some setbacks, and optical property is not good.
[summary of the invention]
The purpose of this utility model is to provide a kind of Glass bending mold, and this mould can be realized the operation of twice brake forming of sheet glass easily.
The utility model is achieved through the following technical solutions above-mentioned technical problem: a kind of Glass bending mold comprises that a pedestal, a shaping frame, a premolding frame and one move to the movable locating device of the second position with described premolding frame from first location.This shaping frame is fixed on this pedestal, has a shaping glass sheets surface on it, and this shaping glass sheets surface is corresponding with the net shape of the sheet glass peripheral edge of moulding soon on height and profile.Have a shaping glass sheets surface on this premolding frame, this premolding frame has two positions: when this premolding frame during in first location, the molded surface of premolding frame will be higher than the molded surface of shaping frame; When this premolding frame during in the second position, the premolding frame is lower than the molded surface of shaping frame.Wherein, when this premolding frame during in first location, the molded surface that the premolding frame constitutes is corresponding with the original shape of sheet glass peripheral edge.
Wherein this movable locating device comprises that one is pivotally fixed in the supporting bracket of pedestal, one is fixed in the feet of premolding frame, an and push rod that is pivotally fixed in pedestal, this feet cooperates this premolding frame of location in above-mentioned first location with this supporting bracket, thereby this push rod can be pushed supporting bracket open this feet and this supporting bracket are broken away from, so that this premolding frame moves to the above-mentioned second position.
This premolding frame comprises a pair of movably premolding limit, this premolding limit is separately positioned on a side of the minor face of this shaping frame, sheet glass is carried out minor face premolding, and described feet promptly is fixed on an end on this premolding limit, and the other end on this preformation limit is pivotable to be fixed on the shaping frame.
This premolding frame can also be a framework, comprises long limit of a pair of premolding and a pair of premolding minor face, and premolding is carried out on the length limit of this sheet glass.
This premolding frame can also be the fillet that comprises long limit of a pair of premolding and the long limit of the described premolding of a pair of connection, sheet glass is grown the premolding on limit.
This premolding frame can also be to comprise a pair of premolding minor face and a pair of fillet that connects described premolding minor face, sheet glass is carried out the premolding of minor face.
This premolding frame can be positioned at the inboard or the outside of this shaping frame.
In the forming sheet glass process, the molded surface that the premolding frame constitutes is slightly more flat than the radian of the molded surface that shaping frame constitutes, when shaping glass sheets, press the radian moulding of the molded surface of premolding frame earlier, after the premolding frame breaks away from, the contact of sheet glass premolding frame is pressed the molded surface moulding of shaping frame again, thereby has been realized twice brake forming of sheet glass.
The advantage of the utility model Glass bending mold is: increased the premolding frame 1., sheet glass is carried out twice brake forming, when adopting the preformed bending glass sheet mould of minor face, the problem of the reverse sphere in bight that produces for the rapid variation because of the sheet glass short side direction has played the good effect of improving, prevented the wide phenomenon that weighs of mold-mart that causes because of dimensional change before and after crooked, improved visual appearance, avoided causing flounce too greatly because of dead load forming of traditional moulds makes sheet glass local deformaton amount, and solved the softening back of the part sagging that side sphere big sheet glass stretches out shaping frame, and the limit portion spherical transition of sheet glass short side direction is smooth-going, and glass edges of boards portion is corresponding with the bight optical property also to improve a lot; 2. when adopting the preformed bending glass sheet mould in long limit, can improve the problem that the bigger sheet glass concentric reducer spherical transition of sphere has some setbacks, make sphere become arch by waviness, changed the not good present situation of sheet glass optical property simultaneously, and, alleviated mold-mart by premolding for having played the good effect of improving because of the sheet glass long side direction sharply changes the problem that produces the reverse sphere in bight; 3. when adopting four limit premolding bending glass sheet moulds, can obviously improve the spherical transition at sheet glass middle part, make sphere become arch, simultaneously, can improve sheet glass side spherical transition by waviness, prevent that the sheet glass bight from producing flounce, improved the not good present situation of sheet glass optical property simultaneously, the optical property of sheet glass has been shown improve, by twice brake forming, alleviate the vestige of mould, improved product appearance quality and optical property.
[description of drawings]
Fig. 1 is the overall plan view of the utility model first embodiment.
Fig. 2 be among the utility model Fig. 1 A to view.
Fig. 3 is that the premolding frame is in the first location synoptic diagram among the utility model first embodiment.
Fig. 4 is that the premolding frame is in second position synoptic diagram among the utility model first embodiment.
Fig. 5 is the overall plan view of the utility model second embodiment.
Fig. 6 is that B is to sectional view among the utility model Fig. 5, and wherein the premolding frame is in first location.
Fig. 7 is that B is to sectional view among the utility model Fig. 5, and wherein the premolding frame is in the second position.
Fig. 8 is the overall plan view of the utility model the 3rd embodiment.
Fig. 9 is that C is to view among the utility model Fig. 8, and wherein the premolding frame is in first location.
Figure 10 is that C is to view among the utility model Fig. 8, and wherein the premolding frame is in the second position.
Figure 11 is the overall plan view of the utility model the 4th embodiment.
Figure 12 is that D is to view among the utility model Figure 11, and wherein the premolding frame is in first location.
Figure 13 is that D is to view among the utility model Figure 11, and wherein the premolding frame is in the second position.
[embodiment]
In conjunction with the embodiments the utility model is further described with reference to the accompanying drawings.
A kind of Glass bending mold of the utility model comprises that a pedestal 1, is fixed on shaping frame 2, the one premolding frames 3 on the pedestal 1, and a movable locating device 4.
See also Fig. 1 to Fig. 4, be the utility model first embodiment, wherein this shaping frame 2 comprises a pair of anchor 22 and a pair of removable moulding frame 24.This is fixed on this pedestal 1 two long limits of anchor 22 as this shaping frame 2.Should be to two minor faces of removable moulding frame 24 as this shaping frame 2, it nestles up this anchor 22, and is installed in two opposite ends of this anchor 22 respectively.Should link together to removable moulding frame 24 active and this anchor 22, this movable connection method can be for hinged, pivotally connected or other existing movable connection methods, thus should overturn with respect to a tie point 26 to removable moulding frame 24 is discriminable.This is to anchor 22 and should constitute a shaping glass sheets surface to removable moulding frame 24 is common, and this molded surface is corresponding with the net shape of the sheet glass peripheral edge of moulding soon on height and profile.Should a balance flank 5 be set respectively to the both sides of the edge of removable moulding frame 24, this balance flank 5 comprises a rock arm 52 and a gravity drop hammer 54, wherein these rock arm 52 1 ends are fixed in this and move on the forming supporter 24, making this move forming supporter 24 can be synchronized with the movement with rock arm 52 under the drive of this rock arm 52, and this gravity drop hammer 54 is installed in the other end of this rock arm 52.The outer fix place that is positioned at this gravity drop hammer 54 of this rock arm 52 also is provided with one and regulates bolt 56, wherein this adjusting bolt 56 can be around these rock arm 52 rotations to change the length of its end of stretching out this rock arm 52 562, this pedestal 1 is provided with a banking stop 12 in the stroke lower position of this gravity drop hammer 54, the final position of this end 562 only is butted on this banking stop 12, guarantees that moulding is accurate thereby this adjusting bolt 56 matches with this banking stop 12.
This premolding frame 3 is a pair of movably premolding limits, this premolding frame 3 is separately positioned on this outside to removable moulding frame 24, it can carry out premolding to this sheet glass minor face, this premolding frame 3 has a first location and a second position, when this premolding frame 3 is positioned at first location, as shown in Figure 3, this is to the anchor 22 common formations one sheet glass premolding surface of premolding frame 3 with this shaping frame 2, this premolding surface is higher than the molded surface of shaping frame 2, the original shape of itself and sheet glass peripheral edge is consistent basically, when this premolding frame 3 was positioned at the second position, as shown in Figure 4, this premolding frame 3 was lower than the molded surface of shaping frame 2.One end 31 of this premolding frame 3 is pivotable to be fixed on the rock arm 52 of balance flank 5, the other end is a free end 32, it is fixed in the chute 322 of this pedestal 1 one and slides up and down, and when this premolding frame 3 was in the second position, this free end 32 only was butted on the bottom of this chute 322.
This movable locating device 4 comprises a supporting bracket 42, one feets 44, and a push rod 46.These supporting bracket 42 pivotable being fixed on this pedestal 1 wherein, this feet 44 is fixed on the free end 32 of this premolding frame 3, and this feet 44 is supported on this supporting bracket 42, these push rod 46 pivotable being fixed on this pedestal 1.When the feet 44 of this premolding frame 3 is supported on this supporting bracket 42, this premolding frame 3 is positioned at above-mentioned first location, by pushing away this push rod 46, this feet 44 and this supporting bracket 42 are broken away from, thereby make this premolding frame 3 move to the above-mentioned second position to this supporting bracket 42.
Among above-mentioned first kind of embodiment, according to the preformed needs of bending glass sheet, this premolding frame 3 also can be separately positioned on this inboard to removable moulding frame 24.
See also Fig. 5 to Fig. 7, be second embodiment of the present utility model, wherein the structure among the structure of this shaping frame 2 and first embodiment is identical, the difference of the mould of the structure of this Glass bending mold and above-mentioned first embodiment is, this premolding frame 3 is frameworks, comprise long limit 34 of a pair of premolding and a pair of premolding minor face 36, it can carry out premolding simultaneously to the length limit of this sheet glass, and this premolding frame 3 is arranged on the inboard of shaping frame 2.This premolding frame 3 has a first location and a second position, when this premolding frame 3 is positioned at first location, as shown in Figure 6, this is to the long limit 34 of premolding and this is to premolding minor face 36 common formations one sheet glass premolding surface, this premolding surface is higher than the molded surface of shaping frame 2, and its original shape with the sheet glass peripheral edge is corresponding, when this premolding frame 3 is positioned at the second position, as shown in Figure 7, this premolding frame 3 is lower than the molded surface of shaping frame 2.This is to the long limit 34 of premolding and this is to respectively being set with a fender bracket 342 on the premolding minor face 36; corresponding to this fender bracket 342 a protection holder 142 is set on this pedestal 1; this fender bracket 342 was supported in this protection holder 142 when this premolding frame 3 was converted to the second position, prevented that this premolding frame 3 from directly touching the unnecessary damage that pedestal 1 causes.
Structure among the structure of this movable locating device 4 and first embodiment is basic identical, and wherein this is to the long limit 34 of premolding or this is to fixing a feet 44 at least on the premolding minor face 36.When this feet 44 was supported on this supporting bracket 42, this premolding frame 3 was positioned at above-mentioned first location, by pushing away this push rod 46 to this supporting bracket 42, this feet 44 and this supporting bracket 42 is broken away from, thereby make this premolding frame 3 move to the above-mentioned second position.
Among above-mentioned second embodiment, according to the preformed needs of bending glass sheet, this premolding frame 3 also can be arranged on the outside of shaping frame 2.
See also Fig. 8 to Figure 10, be the 3rd embodiment of the present utility model, the difference of the mould of the structure of this Glass bending mold and above-mentioned second embodiment is, this premolding frame 3 comprises long limit 34 ' of a pair of premolding and a pair of fillet 36 ', it can grow the premolding on limit to sheet glass, wherein this only plays this effect to the long limit 34 ' of premolding that connects to fillet 36 ', and do not have the preformed effect of sheet glass, other structure is then identical with mould structure among second embodiment.Synoptic diagram when Fig. 9 is in first location for premolding frame 3, this position to the long limit 34 ' of premolding is higher than the long limit of this shaping frame 2, and the position of this fillet 36 ' is lower than the minor face of this shaping frame 2, synoptic diagram when Figure 10 is in the second position for premolding frame 3, according to the preformed needs of bending glass sheet, this premolding frame 3 can be positioned at the outside of this shaping frame 2, also can be positioned at the inboard of this shaping frame 2.
See also Figure 11 to Figure 13, be the utility model the 4th embodiment, the difference of the mould of the structure of this Glass bending mold and above-mentioned second embodiment is, this premolding frame 3 comprises a pair of fillet 34 " and a pair of premolding minor face 36 ", it can carry out the premolding of minor face to sheet glass, wherein this is to fillet 34 " mainly play connect this to premolding minor face 36 " effect, its part parallel with the moving forming supporter 24 of this shaping frame 2 also plays sheet glass premolding effect, the anchor 22 of this shaping frame 2 is shared this long limits 34 " part; the removable moulding frame 24 of this shaping frame 2 pivots is fixed in this fillet 34 " a side, synoptic diagram when Figure 12 is in first location for premolding frame 3, this is to premolding minor face 36 " the position be higher than the minor face of this shaping frame 2; synoptic diagram when Figure 10 is in the second position for premolding frame 3; this is to premolding minor face 36 " the position be lower than the minor face of this shaping frame 2, according to the preformed needs of bending glass sheet, this premolding frame 3 can be positioned at the outside of this shaping frame 2, also can be positioned at the inboard of this forming supporter 2.
The use-pattern of above-mentioned four kinds of Glass bending molds is as described below, at first use this movable locating device 4, this feet 44 is supported on this supporting bracket 42, thereby this premolding frame 3 was positioned at above-mentioned first location and constituted a premolding surface this moment, the sheet glass of placing one or some prebuckling moulding that stacks is on this premolding surface, then this complete assembly is entered curvedization stove, this sheet glass is carried out premolding, when sheet glass reaches its ideal pre-bend shape, by pushing away this push rod 46 to this supporting bracket 42, this feet 44 and this supporting bracket 42 are broken away from, thereby make this premolding frame 3 be converted to the above-mentioned second position.At this moment, under the effect of sheet glass self gravitation, this sheet glass drops to shaping frame 2 and contacts, and finishes the final molding of sheet glass on this shaping frame 2.Thereafter by this balance flank 5 with this to the cooperating of removable moulding frame 24, this sheet glass is realized mild brake forming under the self gravitation effect.
Among four above-mentioned embodiment, this shaping frame 2 can be holistic skeleton construction, and promptly four of this shaping frame limits all are fixed on this pedestal 1 continuously.