CN113060929B - Automobile glass forming die and production method - Google Patents
Automobile glass forming die and production method Download PDFInfo
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- CN113060929B CN113060929B CN202110384506.7A CN202110384506A CN113060929B CN 113060929 B CN113060929 B CN 113060929B CN 202110384506 A CN202110384506 A CN 202110384506A CN 113060929 B CN113060929 B CN 113060929B
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- male die
- upper male
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
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- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
The invention relates to an automobile glass forming die which comprises an upper male die and a lower female die, wherein the outer convex surface of the upper male die is arranged corresponding to the outer concave surface of the lower female die, the lower female die is used for bearing a plurality of glass plates, the upper male die comprises a plurality of vacuum holes, the plurality of vacuum holes are arranged on the edge of the outer convex surface of the upper male die in a surrounding manner, the plurality of vacuum holes penetrate through the inner part of the upper male die and the outer convex surface of the upper male die, when the outer convex surface of the upper male die is attached to the glass plates, the plurality of vacuum holes can be overlapped with the glass plates, and the overlapping area of the plurality of vacuum holes and the glass plates is 1.5-4.5% of the area of the glass plates; and the control system is simultaneously communicated with the middle part of the outer convex surface of the upper male die and the edge part of the outer convex surface of the upper male die, and can drive the upper male die to simultaneously adsorb a plurality of glass plates positioned on the lower female die. The automobile glass forming die improves the integral optical quality and integral profile of the glass plate, reduces the integral profile fluctuation of the glass plate, and can meet the production requirements of large-batch glass plates.
Description
The technical field is as follows:
the invention relates to the field of manufacturing molds, in particular to a forming mold suitable for manufacturing automobile laminated glass and a production method.
Background art:
with the development of the automobile industry, automobile host factories increasingly increase the demand of interlayer front windshield glass with complex shape, large bending degree and light weight; due to the consideration on the appearance modeling, the driving safety and the fuel economy of the vehicle, the manufacturing requirement of the interlayer front windshield is increasingly improved, and the production process and the forming equipment of the interlayer front windshield are also more required; the manufacturing procedure of the prior sandwich front windshield comprises a step-by-step compression molding process, which comprises the following specific steps of firstly placing a glass plate on a molding die, heating the glass plate to a softening temperature to enable the glass plate to be attached to a supporting surface of the molding die, then driving an upper pressing die with the same shape as the automobile glass to move towards the molding die, attaching the upper pressing die to the molding die, and finally pressing the glass plate into a final shape; the glass plate can not be uniformly pressed in the conventional step-by-step press forming process, so that the defects of unsmooth glass plate profile and large profile fluctuation are easily caused; thereby affecting glass appearance and performance.
Chinese patent CN103553307B discloses an apparatus for bending a glass sheet, comprising a heating furnace, a transfer mechanism, an upper press mold and a lower press mold, wherein the upper press mold comprises a movable portion and a body portion, the movable portion of the upper press mold presses the glass sheet first during pressing, and then the movable portion and the body portion of the upper press mold are combined together to press downwards, and are attached to the lower press mold to bend the glass sheet into a final shape. The movable part and the body part of the upper pressing die in the device for bending the glass plates are fixed, so that the laminated glass cannot be uniformly and stably pressed in the production process, the manufactured glass plates have large surface fluctuation and poor integral optical quality, and the device cannot synchronously adsorb a plurality of glass plates, has poor production consistency and cannot meet the production of large-batch laminated glass.
The invention content is as follows:
the invention aims to solve the technical problems that the conventional glass plate bending device cannot uniformly and stably press laminated glass, has poor production consistency, cannot synchronously adsorb a plurality of glass plates at the same time, cannot meet the requirements of mass production and the like, and provides an automobile glass forming die which can synchronously adsorb a plurality of laminated glass plates in the pressing process, can adjust the pressing degree of the glass plates according to the actual production condition, uniformly and stably press the glass plates and improve the overall optical quality of the glass plates.
In order to solve the technical problem, the automobile glass forming die comprises an upper male die and a lower female die, wherein the upper male die is provided with an outer convex surface which is the same as the automobile glass in shape, the lower female die is provided with an outer concave surface which is the same as the automobile glass in shape, the outer convex surface of the upper male die is arranged corresponding to the outer concave surface of the lower female die, the lower female die is used for bearing a plurality of glass plates, the upper male die comprises a plurality of vacuum holes, the vacuum holes are arranged on the edge part of the outer convex surface of the upper male die in a surrounding manner, the vacuum holes penetrate through the inner part of the upper male die and the outer convex surface of the upper male die, when the outer convex surface of the upper male die is attached to the glass plate, the vacuum holes can be overlapped with the glass plate, and the overlapping area of the vacuum holes and the glass plate is 1.5% -4.5% of the area of the glass plate; and the control system is simultaneously communicated with the middle part of the outer convex surface of the upper male die and the edge part of the outer convex surface of the upper male die, and can drive the upper male die to simultaneously adsorb a plurality of glass plates positioned on the lower female die.
Furthermore, the upper male die of the automobile glass forming die also comprises a pressing groove, and the pressing groove is arranged on the edge part of the outer convex surface of the upper male die in a surrounding manner; a plurality of vacuum holes are located in the press recess.
Furthermore, the width range of the pressing groove of the automobile glass forming die is 20-150 mm; the depth range of the pressing groove is 5-15 mm, and the distance range between the pressing groove and the outer wall of the upper male die is 10-30 mm.
Furthermore, this last relief mould of car glass forming die still includes first body and second body, and the shape of first body matches each other with the shape of second body, and the periphery at first body is established to the second body cover, can slide between first body and the second body relatively, and first body has the shape corresponding with the middle part shape of the car glass that needs to produce, and the second body has the shape corresponding with the shape of the edge portion shape of the car glass that needs to produce.
Furthermore, the first body of the automobile glass forming die comprises a plurality of male die chambers, and separators are arranged above the male die chambers and respectively form corresponding chamber sealing structures with the male die chambers; a plurality of openings are formed in the position, corresponding to the male die chambers, of the separating piece, and the male die chambers are communicated with the vacuum connecting piece through at least one opening; a sealing element is arranged above the separator, the sealing element is fixedly connected with the first body, and the sealing element is detachably connected with the second body; the sealing element is fixedly connected with the vacuum connecting piece.
Furthermore, this car glass forming die's last matrix is fixed on last frame, goes up the frame and includes frame main part, a plurality of stop device and a plurality of cooperation stop device, and a plurality of stop device fix respectively in the top of frame main part, and a plurality of cooperation stop device fix respectively in the below of frame main part, and the position of stop device for frame main part matches each other with the position of cooperation stop device for frame main part.
Furthermore, the limiting device of the automobile glass forming die comprises a limiting seat, a limiting block and a limiting gasket, wherein the limiting seat is fixed right above the limiting gasket, and the limiting block is arranged below the limiting seat and above the limiting gasket; the matching limiting device comprises a hanging rod, a matching limiting part, an adjusting gasket and a limiting connecting piece, the position of the matching limiting part relative to the frame body is matched with the position of the limiting gasket relative to the frame body, the hanging rod is arranged in the middle of the matching limiting part, the hanging rod extends upwards to extend through the frame body, the hanging rod is located under the limiting block, the mounting direction of the hanging rod is perpendicular to that of the matching limiting part, the hanging rod can slide relative to the matching limiting part, one end of the hanging rod is detachably connected with the limiting block, the other end of the hanging rod is fixedly connected with the upper male die, and the adjusting gasket is arranged between the hanging rod and the upper male die.
Furthermore, the diameter range of the vacuum hole of the automobile glass forming die is 5-40 mm; the distances from the centers of the plurality of vacuum holes to the edge of the upper convex die are equal to each other, and when the outer convex surface of the upper convex die is attached to the glass plate, the distance from the centers of the plurality of vacuum holes to the edge of the glass plate ranges from 0 mm to 15 mm.
Furthermore, this automobile glass forming die's automobile glass forming die still includes a plurality of adjusting device and fixed horizontal pole, and a plurality of adjusting device fix simultaneously on fixed horizontal pole, and a plurality of adjusting device and fixed horizontal pole are located the top of terrace die, and a plurality of adjusting device are used for adjusting the degree of pressing of terrace die to the glass board.
Furthermore, the adjusting device of the automobile glass forming die comprises a movable frame, a connecting frame, a counterweight cylinder and a fixing plate, wherein the movable frame is arranged on the side edge of the connecting frame and can slide relative to the connecting frame; the counterweight cylinder is arranged in the connecting frame, a movable part of the counterweight cylinder is fixedly connected with the top of the movable frame, a driving part of the counterweight cylinder is fixed on an upper fixing part of the connecting frame, the driving part of the counterweight cylinder is positioned above a lower fixing part of the connecting frame, and the counterweight cylinder can be detachably connected with the lower fixing part of the connecting frame; fixed frame's lower fixed part passes through fixed plate and fixed horizontal pole fixed connection, and movable frame includes telescopic link down, and movable frame can be along with the movable part of counter weight cylinder, and straight line elevating movement is done along counter weight cylinder's installation direction.
Meanwhile, the invention also provides a production method of the automobile glass by using the automobile glass forming die, which comprises the following steps:
step 1: placing the glass plate softened after heating on a lower concave die;
step 2: controlling the upper convex die to move towards the direction close to the lower concave die, and controlling the upper convex die to manufacture the glass plate positioned on the lower concave die;
and step 3: controlling the upper male die to adsorb the glass plate positioned on the lower female die;
and 4, step 4: controlling the upper male die to maintain the glass plate to be adsorbed for at least 0.2 second;
and 5: controlling the middle part of the upper male die to stop adsorbing the glass plate, and controlling the edge part of the upper male die to continuously adsorb the glass plate;
step 6: the upper male mold is controlled to release the glass sheet to form a bent glass sheet.
Further, in step 3 of the automobile glass production method, the vacuum air pressure at the edge part of the upper male die is 5-30 kPa, and the vacuum air pressure at the middle part of the upper male die is 40-80 kPa.
Further, in step 4 of the automobile glass production method, the upper male die is controlled to keep adsorbing the glass plate for 0.2-6 seconds.
Further, in step 5 of the automobile glass production method, the edge part of the upper male die is controlled to continuously adsorb the glass plate for 3-6 seconds.
According to the automobile glass forming device, the vacuum holes are formed in the edge of the upper male die, the upper male die is arranged into the plurality of male die chambers and communicated with the corresponding vacuum connecting pieces, at least two glass plates can be simultaneously adsorbed from the lower female die, the pressing degree of the upper male die on the glass plates, particularly the pressing degree of the glass plates at different positions can be adjusted according to actual production conditions, the overall optical quality and the overall profile of the glass plates are improved, the overall profile fluctuation of the glass plates is reduced, the production quality of the glass plates is improved, and the production requirements of large-batch glass plates can be met.
Description of the drawings:
FIG. 1 is a schematic structural view of an automotive glass molding mold according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic structural view of an upper male die of the automotive glass forming die according to the present invention;
FIG. 4 is a schematic structural diagram of a first body of an upper male die of the automotive glass forming die according to the present invention;
FIG. 5 is a schematic structural diagram of a second body of an upper male die of the automotive glass forming die according to the invention;
FIG. 6 is a schematic structural view of another perspective of the upper male mold of the automotive glass-forming mold of the present invention;
FIG. 7 is a schematic view of the assembly of the first body, the second body, the first vacuum connecting member, the second vacuum connecting member and the spacer of the upper male mold of the automotive glass molding die according to the present invention;
FIG. 8 is a schematic structural diagram of an adjusting device of an automobile glass forming mold according to the present invention;
FIG. 9 is a schematic structural view of a lower concave die of the automotive glass molding die of the present invention.
The specific implementation mode is as follows:
the invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 9, the automobile glass forming die provided by the invention comprises an upper male die 1, an upper frame 2, a lower female die 4 and a lower frame 5, wherein the upper male die 1 is fixed right below the upper frame 2, and the upper male die 1 has an outer convex surface with the same shape as that of automobile glass; the lower female die 4 is fixed right above the lower frame 5, the lower female die 4 is provided with an outer concave surface with the same shape as the automobile glass, the outer convex surface of the upper male die 1 is arranged corresponding to the outer concave surface of the lower female die 4, and the lower female die 4 is used for bearing a plurality of glass plates; the upper male die 1 comprises a plurality of vacuum holes 111, the vacuum holes 111 are arranged at the edge part of the outer convex surface of the upper male die 1 in a surrounding manner, the vacuum holes 111 penetrate through the inner part of the upper male die 1 to the outer convex surface of the upper male die 1, when the outer convex surface of the upper male die 1 is attached to a glass plate, the vacuum holes 111 can be overlapped with the glass plate, and the overlapping area of the vacuum holes 111 and the glass plate is 1.5-4.5% of the area of the glass plate; a control system; the control system is simultaneously communicated with the middle part of the outer convex surface of the upper male die 1 and the edge part of the outer convex surface of the upper male die 1, the control system can drive the upper male die 1 to move towards the lower female die 4 and press and bend glass plates, and the control system can drive the upper male die 1 to simultaneously adsorb a plurality of glass plates on the lower female die 4. According to the automobile glass forming die, a plurality of vacuum holes 111 are formed in the periphery of the outer convex surface of the upper male die 1, so that in the production process, under the cooperation effect of the lower female die 4, a plurality of glass plates can be simultaneously adsorbed onto the upper male die 1 from the lower female die 4 by the upper male die 1 and are uniformly attached to the upper male die 1; the shapes of the glass plates are kept consistent in the forming process, no air bubbles or gaps are generated among the glass plates, the glass plates can be completely attached, and the bent and formed glass plates have good optical quality and profile integrity and high production consistency and stability; the production efficiency of the automobile glass forming die is also improved.
In order to improve the adsorption effect of the upper male die 1 and further improve the forming effect and the forming quality of the automotive glass forming die, preferably, a pressing groove 1100 is arranged on the edge portion of the outer convex surface of the upper male die 1, and the pressing groove 1100 is arranged around the edge portion of the outer convex surface of the upper male die 1; the plurality of vacuum holes 111 are disposed in the pressing groove 1100, and the pressing groove 1100 and the plurality of vacuum holes 111 can form a vacuum structure.
The upper male die 1 comprises a first body 10, a second body 11, a first vacuum connecting piece 12, at least two second vacuum connecting pieces 13, a partition 14 and a sealing piece 15, wherein the shape of the first body 10 is matched with that of the second body 11, the second body 11 is sleeved on the periphery of the first body 10, and the first body 10 and the second body 11 can slide relative to each other, so that corresponding positions of a glass plate can be pressed to different degrees, and the forming quality of the glass plate is improved; the upper punch 1 has the same shape as a laminated automotive glass, the first body 10 has a shape corresponding to a middle portion of the laminated automotive glass to be produced, the second body 11 has a shape corresponding to an edge portion of the laminated automotive glass to be produced, the partition 14 is provided inside the first body 10, the partition 14 has the same shape as the first body 10, the partition 14 is located above an inner concave surface of the first body 10 with a gap therebetween, the partition 14 is fixedly connected to a side wall of the first body 10 and forms a chamber sealing structure with a bottom surface of the first body 10, more specifically, the first body 10 includes a plurality of punch chambers, the partition 14 is provided above the plurality of punch chambers, the partition 14 and the punch chambers of the first body 10 constitute a chamber sealing structure, and the partition 14 is used for pressure difference between the first body 10 and the second body 11; a plurality of openings 141 are formed in the separator 14 at positions corresponding to the punch chambers, the plurality of openings 141 are respectively located at different positions of the separator 14, and the plurality of punch chambers are respectively communicated with the corresponding first vacuum connectors 12 and the two second vacuum connectors 13 through the corresponding openings 141; the first vacuum connecting piece 12 and the two second vacuum connecting pieces 13 are communicated with the control system, the control system can form a vacuum environment in the cavity sealing structure through the first vacuum connecting piece 12 and the two second vacuum connecting pieces 13, and under the action of outside air, the upper male die 1 can stably and quickly adsorb a plurality of glass plates on the outer convex surface of the upper male die 1 under the combined action of the outside air and the cavity sealing structure, so that the glass plates are bent to form the final laminated automobile glass; the sealing element 15 is arranged above the vacuum holes 111 and above the partition 14, the sealing element 15 is fixedly connected with the upper part of the first body 10, the sealing element 15 and the first body 10 form a main sealing structure, and the sealing element 15 and the second body 11 are detachably connected; the sealing member 15 can be connected with the first vacuum connector 12 and the two second vacuum connectors 13 simultaneously, and when the sealing member 15 is connected with the second body 11, the sealing member 15 and the second body 11 form a sealing structure; the glass plate is adsorbed from the lower female die 4, and is tightly attached to the upper male die 1, so that the adsorption and pressing processes of the glass plate are not influenced by the air leakage phenomenon in the adsorption process, and the forming quality of the glass plate is improved; a manner of communicating the plurality of vacuum holes 111 at the edge of the second body 11 with the second vacuum connector 13 by dividing the upper punch 1 into a first body 10 and a second body 11 which are separately nested from each other, and providing a plurality of punch chambers in the first body 10, providing the partition 14 above the punch chambers to form corresponding sealing structures, and communicating the chamber sealing structures with the control system through the first vacuum connector 12 and the second vacuum connector 13; the pressing degree of different positions of the glass plate can be adjusted in the forming process, so that the molded surface of the edge part and the middle part of the glass plate can be controlled more accurately, and the optical quality consistency and the molded surface stability of the edge part and the middle part of the laminated automobile glass are improved.
As shown in fig. 1 and fig. 2, the upper frame 2 includes a frame main body 20, a plurality of position-limiting devices 21 and a plurality of matching position-limiting devices 22, the plurality of position-limiting devices 21 are fixed above the frame main body 20, the plurality of matching position-limiting devices 21 are fixed below the frame main body 20, the position of the position-limiting devices 21 relative to the frame main body 20 and the position of the matching position-limiting devices 22 relative to the frame main body 20 correspond to each other, the position-limiting devices 21 include a position-limiting seat 210, a position-limiting block 211 and a position-limiting shim 212, the position-limiting seat 210 is fixed directly above the position-limiting shim 212, and the position-limiting block 211 is disposed below the position-limiting seat 210 and above the position-limiting shim 212; the fit limiting device 22 comprises a hanging rod 220, a fit limiting piece 221, an adjusting shim 222 and a limit connecting piece 223, the position of the fit limiting piece 221 relative to the frame main body 20 corresponds to the position of the limit shim 212 relative to the frame main body 20, the hanging rod 220 is arranged in the middle of the fit limiting piece 221, the hanging rod 220 extends upwards through the frame main body 20, the hanging rod 220 is located right below the limit block 211, the mounting direction of the hanging rod 220 is perpendicular to the mounting direction of the fit limiting piece 221, the hanging rod 220 can move relative to the fit limiting piece 221, one end of the hanging rod 220 is detachably connected with the limit block 211, the other end of the hanging rod 220 is fixedly connected with the second body 11, specifically, the adjusting shim 222 is arranged between the hanging rod 220 and the second body 11, and the hanging rod 220 is fixedly connected with the second body 11 through the two limit connecting pieces 223; specifically, when the hanging rod 220 moves upward, passes through the stopper 211 and contacts the top of the stopper seat 210, the top of the stopper seat 210 can prevent the hanging rod 220 from continuing to move upward to fix the relative distance between the first body 10 and the second body 11; by increasing or decreasing the number of the adjusting washers 222 between the hanging rod 220 and the second body 11, the relative height between the second body 11 and the frame main body 20 and the relative height of the limit block 211 relative to the top end of the hanging rod 220 can be adjusted, and further the distance between the second body 11 and the lower female die 4 and the movement range of the hanging rod 220 are controlled, so as to adjust the pressing degree of the edge part of the glass plate, and improve the overall profile stability and the overall optical quality of the laminated automotive glass; in order to improve the stability of the relative sliding between the first body 10 and the second body 11 during the pressing process, so as to improve the optical quality of the edge portion of the laminated automobile glass and the consistency of the profiles, preferably, four limiting devices 21 and four matching limiting devices 22 are arranged on the upper frame 2, and the limiting devices 21 and the matching limiting devices 22 are correspondingly arranged on different positions of the frame body 20; each limiting device 21 corresponds to each matching limiting device 22, the four limiting devices 21 and the four matching limiting devices 22 are correspondingly connected with the second body 11, and the vertical distance between the top end of the suspension rod 220 and the limiting seat 210 is 1-10 mm.
In fig. 3 and 4, the first body 10 includes a first body chamber 101, a second body chamber 102 and a third body chamber 103, and the first body chamber 101, the second body chamber 102 and the third body chamber 103 together constitute the first body 10 having the same shape as a laminated automotive glass; specifically, the shape of the first body cavity 101 corresponds to the shape of the top of the laminated automobile glass, the shape of the second body cavity 102 corresponds to the shape of the middle part of the laminated automobile glass, and the shape of the third body cavity 103 corresponds to the shape of the bottom of the laminated automobile glass; the first body chamber 101, the second body chamber 102 and the third body chamber 103 have the same height, and the first body chamber 101, the second body chamber 102 and the third body chamber 103 are spaced apart from each other and are not communicated; the lower surface of the first body cavity 101, the lower surface of the second body cavity 102 and the lower surface of the third body cavity 103 together constitute a pressing surface 100 of the first body 10.
In fig. 6 and 7, the partition 14 is simultaneously located above the first body chamber 101, the second body chamber 102 and the third body chamber 103, the partition 14 corresponding to the first body chamber 101 constitutes a first sealed chamber, the partition 14 corresponding to the second body chamber 102 constitutes a second sealed chamber, and the partition 14 corresponding to the third body chamber 103 constitutes a third sealed chamber; in order to facilitate the installation of the partition 14, preferably, the partition 14 is composed of a plurality of partition plates, which are correspondingly installed above the first body chamber 101, the second body chamber 102 and the third body chamber 103, and are fixed by bolts and nuts and fixedly connected with corresponding portions of the first body 10; in order to realize the vacuum pumping treatment of the first sealing chamber, the second sealing chamber and the third sealing chamber, so that the laminated automobile glass is completely and stably adsorbed, the molding quality of the laminated automobile glass is improved, and the optical quality and the molding surface quality of different areas of the automobile glass are controlled; specifically, three first openings 1410, three second openings 1411 and three third openings (not shown) are provided in the partition 14, a fourth opening (not shown) is provided in the sealing member 15, three first openings 1410 are respectively communicated with the first sealing chamber, the second openings 1411 are communicated with the second sealing chamber, the third openings are communicated with the third sealing chamber, and the fourth openings are communicated with the plurality of vacuum holes 111 provided in the pressing groove 1100. Correspondingly, the first sealed chamber is communicated with the control system through the three first openings 1410 of the partition 14 and the second vacuum connector 13, specifically, the second vacuum connector 13 comprises a second vacuum intermediate piece 130 and three second vacuum communication pipes 131, the second vacuum intermediate piece 130 is simultaneously communicated with the connecting ends of the three second vacuum communication pipes 131, the ends of the three second vacuum communication pipes 131 are respectively communicated with the corresponding three first openings 1410, and the second vacuum intermediate piece 130 is communicated with the control system; the second sealed chamber is in direct communication with the second vacuum intermediate member 130 of the second vacuum connection 13 through the second opening 1411 of the partition 14; the third sealed chamber is communicated with the connection end of the second vacuum connection pipe 131 of the other second vacuum connection member 13 through the third opening of the partition member 14; wherein, in order to further adsorb the air inside the second body 11 to form a negative pressure state, and simultaneously adsorb and bend the glass plate on the lower female die 4, more specifically, the fourth opening in the middle of the sealing member 15 is communicated with the first vacuum connecting member 12, the first vacuum connecting member 12 is arranged right above the partition 14, and the installation direction of the first vacuum connecting member 12 is perpendicular to the extending direction of the partition 14; the first vacuum connector 12 is simultaneously communicated with the first sealed chamber, the second sealed chamber and the third sealed chamber, and the other end of the first vacuum connector 12 is communicated with the control system; through the first vacuum connecting piece 12, the control system can suck the air in the first body 10 to form a negative pressure state in the first body 10, and form a negative pressure state at the periphery of the second body 11 through a plurality of vacuum holes 111 around the second body 11, and under the action of outside air and the combined action of the lower female die 4, an upward lifting acting force is formed at the edges of a plurality of glass plates, so that the plurality of glass plates are lifted and adsorbed to the surface of the upper male die 1 synchronously, and then are bent synchronously, and the plurality of glass plates are attached to the upper male die 1 simultaneously to form the shape of bent laminated automobile glass.
Wherein the second body 11 includes the second pressing main body 110, the plurality of vacuum holes 111, and the plurality of male mold connectors 112, the second pressing main body 110 has the same shape as that of a laminated automotive glass, the pressing recess 1100 is provided at the periphery of the pressing face of the second pressing main body 110, the pressing recess 1100 is provided around the edge portion of the second pressing main body 110, the plurality of vacuum holes 111 are penetratingly provided in the pressing recess 1100 and uniformly distributed along the shape of the pressing recess 1100, and the plurality of vacuum holes 111 are equidistant from the outer wall of the pressing recess 1100; in order to improve the adsorption stability and the adsorption strength of the second body 11 to the glass plate and improve the molding quality and the production efficiency of the automobile glass molding mold, preferably, the cross-sectional shape of the pressing groove 1100 is a quadrilateral shape, and the width of the pressing groove 1100 ranges from 20 mm to 150 mm; the depth range of the pressing groove 1100 is 5 to 15 mm, and the distance range between the pressing groove 1100 and the outer wall of the second body 11 is 10 to 30 mm, for example, 20 mm; more preferably, the width of the pressing groove 1100 ranges from 30 to 70 mm; in order to fixedly connect the second body 11 with the frame main body 20 of the upper frame 2, specifically, a plurality of male die connectors 112 are respectively fixed at different positions of the second pressing main body 110, a plurality of connecting openings are provided on the male die connectors 112, and the male die connectors 112 are used for fixedly connecting with the matching limiting device 22, so as to fixedly connect the second body 11 with the upper frame 2; more specifically, the second body 11 is provided with four male connectors 112, two male connectors 112 are positioned at the front edge of the second body 11, and the other two male connectors 112 are positioned at the opposite rear edge of the second body 11; the four male connector 112 can improve the mounting stability of the second body 11 to the upper frame 2.
In order to better adsorb a plurality of glass plates from the lower female die 4, stably fix the glass plates on the upper male die 1 and uniformly and stably attach the glass plates to the upper male die 1, the uniformity and stability of the integral molded surface of the glass plates and the integral optical quality are improved; specifically, in fig. 4, a plurality of the vacuum holes 111 are located on the pressing surface of the second body 11, a plurality of the vacuum holes 111 are provided around the edge of the second body 11, and a plurality of the vacuum holes 111 penetrate the pressing surface and the inside of the second body 11 and communicate with the first vacuum connection 12; in order to improve the adsorption capacity of the upper male die 1, so that the glass plate can be stably attached to the pressing surface of the upper male die 1, more specifically, the first vacuum connecting member 12 is a quadrangular through hole, and the open area of the first vacuum connecting member 12 is larger than that of the second vacuum connecting member 13; when the upper male die 1 sucks the glass plate from the lower female die 4, the plurality of vacuum holes 111 are overlapped with the corresponding edge portions of the glass plate, and the overlapping areas of each vacuum hole 111 and the glass plate are the same; the vacuum holes 111 are used for forming a negative pressure cavity channel on the periphery of the upper male die 1 in the process of forming the laminated automobile glass, and form a vacuum belt together with the pressing groove 1100; so that the external air can enter the inside of the upper male mold 1 through the plurality of vacuum holes 111; because the air pressure at the periphery of the upper male die 1 is smaller than that of the outside air, the outside air can generate upward lifting force on the glass plates, and the glass plates are stably attached to the upper male die 1 through the vacuum holes 111, so that the glass plates are prevented from falling off in the adsorption process; by arranging the plurality of vacuum holes 111 on the periphery of the upper male die 1, the automobile glass forming die can adsorb a plurality of glass plates, so that the production efficiency of the automobile glass forming die and the forming quality of laminated automobile glass are improved; in order to better improve the adsorption effect of the upper male die 1 on a plurality of glass plates and the forming quality and forming efficiency of the automobile glass forming die; more specifically, the vacuum holes 111 are circular through holes, and the diameter of the vacuum holes 111 ranges from 5 to 40 mm, such as 15 to 20 mm; the centers of the plurality of vacuum holes 111 are equidistant from the edge of the second body 11, and the centers of the plurality of vacuum holes 111 are equidistant from the edge of the glass sheet in a range of 0 to 15 mm, for example 0 to 3 mm; in order to better control the overall optical consistency of the laminated automotive glass, it is more preferable that a central through hole 121 is formed in the middle of the first vacuum connecting member 12, the central through hole 121 is communicated with the control system, and the central through hole 121 is used for blowing air to the center of the glass plate in the process of adsorbing the glass plate, so that a small amount of space is generated between the upper male die 1 and the glass plate, and the overall profile of the glass plate is further adjusted.
In order to prevent the glass sheets from being stably and rapidly sucked from the lower cavity die 4 due to the existence of the gap on the upper punch 1 or the failure to form a stable sealing structure, which causes problems such as air leakage, etc., during the molding process, specifically, the sealing member 15 is disposed directly above the first body 10, the sealing member 15 has a shape corresponding to the first body 10, the sealing member 15 forms a sealing structure with the first body 10, more specifically, the sealing member 15 includes three sealing partition plates 151, a plurality of sealing partition openings 1510 are disposed at the edge of each sealing partition plate 151, the sealing partition openings 1510 penetrate through the sealing partition plates 151, and the fourth opening is disposed at the center of the sealing member 15.
In order to improve the distance between the upper male die 1 and the lower female die 4, further control the profile quality and the overall optical quality consistency of the laminated automotive glass, and improve the overall profile and the overall optical quality of the laminated automotive glass, the automotive glass forming die 1 further comprises a plurality of adjusting devices 3, the adjusting devices 3 are jointly fixed on a fixed cross rod 35 and are fixedly connected with different positions above the upper frame 2 respectively, preferably, as shown in fig. 1 to 4, four adjusting devices 3 are arranged on the upper frame 2, the adjusting devices 3 are used for balancing and adjusting the distance between the upper male die 1 and the lower female die 4, and the pressing degree between the upper male die 1 and a glass plate is controlled, so that the upper male die 1 can stably move in the forming process, and the forming quality of the glass plate is improved; in fig. 8, the adjusting device 3 includes a movable frame 31, a connecting frame 32, a counterweight cylinder 33 and a fixing plate 34, the movable frame 31 is fixed on the side of the connecting frame 32, and the movable frame 31 can slide relative to the connecting frame 32; the counterweight cylinder 33 is installed inside the connecting frame 32, the movable part of the counterweight cylinder 33 is fixedly connected with the top part 311 of the movable frame 31, further, the movable part of the counterweight cylinder 33 passes through the upper fixing part 321 of the connecting frame 32 and is fixedly connected with the top part 311 of the movable frame 31, the driving part of the counterweight cylinder 33 is fixed on the upper fixing part 321 of the connecting frame 32, the driving part of the counterweight cylinder 33 is located above the lower fixing part 322 of the connecting frame 32, and the counterweight cylinder 33 can be detachably connected with the lower fixing part 322 of the connecting frame 32; the lower fixing part 322 of the connecting frame 32 is fixedly connected with the fixed cross bar 35 through the fixed plate 34, the movable frame 31 includes a lower telescopic rod 313, and the lower telescopic rod 313 is fixedly connected with the upper frame 2; the movable frame 31 can move up and down along the installation direction of the counterweight cylinder 33 along with the movable part of the counterweight cylinder 33; in the bending process of the laminated automobile glass, the lower telescopic rod 313 of the movable frame 31 moves up and down along with the upper male die 1 on the upper frame 2, and more specifically, the lower telescopic rod 313 of the movable frame 31 can drive the second body 11 of the upper male die 1 to move up and down; when the second body 11 is lowered to contact with the lower concave die 4, the lower concave die 4 supports the second body 11, the movable frame 31 is supported by the lower concave die 4 to stop moving, and a space is formed between the movable frame and the connecting frame 32; at this time, when the fixed cross bar 35 drives the connecting frame 32 and the counterweight cylinder 33 to continue to move downwards, the upper male die 1 connected with the movable frame 31 is pressed by the lower female die 4 and cannot move; in order to adjust the pressing degree of the second body 11 to the edge of the glass plate, so as to control the profile and the optical quality of the edge of the glass plate, when the connecting frame 32 and the movable frame 33 move relatively, the driving part of the counterweight cylinder 33 can control the movable part of the counterweight cylinder 33 to contract upwards or extend downwards according to the actual production situation, so as to apply an upward lifting force or a downward pressure to the upper punch 1, so as to correspondingly reduce or increase the pressing degree of the second body 11 to the edge of the glass plate, further better control the profile and the optical quality of the edge of the glass plate, and improve the overall optical quality and the profile stability of the laminated automobile glass plate; in order to stably and accurately control the pressing action of the upper punch 1 on the glass sheet so that the second body 11 can uniformly and stably control the degree of pressing of each portion of the glass sheet, it is preferable that the installation direction of the adjusting device 3 is parallel to the extending direction of the frame main body 20.
In order to ensure that the upper male die 1 can accurately move and accurately fit with the corresponding lower female die 4 in the production process, preferably, in fig. 1, four upper positioning pieces 23 are arranged on two side edges of the upper frame 2, the upper positioning pieces 23 are vertically fixed on two sides of the frame body 20, the upper positioning pieces 23 extend towards the lower female die 4, and the top of each upper positioning piece 23 is in a triangular-pointed shape; as shown in fig. 9, the lower die 4 is fixed at the center of the lower frame 5, the lower frame 5 includes a lower frame body 50 and four lower positioning members 51, the lower positioning members 51 are fixedly mounted on two sides of the lower frame body 50, the mounting direction of the lower positioning members 51 is parallel to the extending direction of the lower frame body 50, the lower positioning members 51 are arranged toward the upper die 1, and the position of the lower positioning members 51 relative to the lower frame body 50 corresponds to the position of the upper positioning members 23 relative to the frame body 20; the shape of the top end of the lower positioning member 51 corresponds to the shape of the top of the upper positioning member 23, and the lower positioning member 51 is used for matching with the upper positioning member 23; when the upper punch 1 moves downwards, the four upper positioning pieces 23 on both sides of the frame body 20 move downwards to be in corresponding contact with the four lower positioning pieces 51 on the lower frame 5, so as to complete the pairing of the upper punch 1 and the lower die 4.
In order to improve the production efficiency of the automotive glass forming mold, preferably, the upper male mold 1 is communicated with a control system, and the control system can control the upper male mold 1 to move towards the lower female mold 4 and be attached to a glass plate on the lower female mold 4; the control system can form corresponding vacuum in the first body 10 and the second body 11 through the corresponding first vacuum connecting piece 12 and the second vacuum connecting piece 13, absorb the multiple glass plates and control the profiles of the multiple glass plates at different positions; more preferably, the control system is further communicated with a plurality of counterweight cylinders 33 in the adjusting device 3, and when the upper male die 1 is in contact with the lower female die 4, the control system can control a driving part of the counterweight cylinders 33 to perform linear lifting motion, so as to adjust the distance between the upper male die 1 and the lower female die 4 and the pressing degree of the upper male die 1 on the glass plate; so as to improve the integral pressing effect and the forming quality of the plurality of glass plates.
The invention also relates to a production method of the automobile glass, which comprises the following steps:
step 1: placing the heated glass plate on the lower concave die 4;
step 2: controlling the upper male die 1 to move towards the direction close to the lower female die 4, and controlling the upper male die 1 to press the glass plate positioned on the lower female die 4;
and 3, step 3: controlling the upper male die 1 to adsorb the glass plate on the lower female die 4;
and 4, step 4: controlling the upper male die 1 to maintain the glass plate to be adsorbed for at least 0.2 second;
and 5: controlling the middle part of the upper male die 1 to stop adsorbing the glass plate, and controlling the edge part of the upper male die 1 to continuously adsorb the glass plate;
and 6: and controlling the upper male die 1 to release the glass plate to form the final bent laminated automobile glass.
Wherein, in the step 3, the vacuum pressure of the edge part of the upper male die 1 is controlled to be 5 to 30 kPa, preferably 10 to 20 kPa, and the vacuum pressure of the middle part of the upper male die 1 is controlled to be 40 to 80 kPa, for example 70 kPa; in the step 4, the upper male die 1 is controlled to maintain adsorbing the glass plate for 0.2 to 6 seconds; for example, 3 seconds; in step 5, controlling the edge part of the upper male die 1 to continuously adsorb the glass plate for 3 to 6 seconds, for example, 4 seconds; furthermore, the production method of the automobile glass is suitable for producing the laminated automobile glass with the central spherical surface larger than 18 mm.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. The utility model provides an automobile glass forming die, includes terrace die and lower die, the terrace die has the outer convex surface the same with the automobile glass shape, the die has the outer concave surface the same with the automobile glass shape down, the outer convex surface of terrace die with the outer concave surface of die corresponds the setting down, the die is used for bearing multi-disc glass board, its characterized in that down:
the upper male mold includes:
the vacuum holes are arranged on the edge part of the outer convex surface of the upper male die in a surrounding mode, the vacuum holes penetrate through the inner portion of the upper male die to the outer convex surface of the upper male die, when the outer convex surface of the upper male die is attached to a glass plate, the vacuum holes can be overlapped with the glass plate, and the overlapping area of the vacuum holes and the glass plate is 1.5% -4.5% of the area of the glass plate;
the control system is simultaneously communicated with the middle part of the outer convex surface of the upper male die and the edge part of the outer convex surface of the upper male die, and can drive the upper male die to simultaneously adsorb a plurality of glass plates on the lower female die;
the diameter range of the vacuum holes is 5-40 mm; the distances from the centers of the vacuum holes to the edge of the upper male die are equal to each other, and when the outer convex surface of the upper male die is attached to the glass plate, the distance range from the centers of the vacuum holes to the edge of the glass plate is 0-15 mm;
the upper male die further comprises a pressing groove which is arranged on the edge part of the outer convex surface of the upper male die in a surrounding manner; a plurality of said vacuum holes are located in said press grooves;
the width range of the pressing groove is 20-150 mm; the depth range of the pressing groove is 5-15 mm, and the distance range between the pressing groove and the outer wall of the upper male die is 10-30 mm.
2. The automotive glass forming mold according to claim 1, characterized in that: the upper male die further comprises a first body and a second body, the shape of the first body is matched with that of the second body, the second body is sleeved on the periphery of the first body, the first body and the second body can slide relatively, the first body is in a shape corresponding to the shape of the middle part of the automobile glass to be produced, and the second body is in a shape corresponding to the shape of the edge of the automobile glass to be produced.
3. The automotive glass forming mold according to claim 2, characterized in that: the first body comprises a plurality of male die chambers, separators are arranged above the male die chambers, and the separators and the male die chambers respectively form corresponding chamber sealing structures; a plurality of openings are formed in the position, corresponding to the punch cavities, of the separator, and the punch cavities are communicated with the vacuum connecting piece through at least one opening; a sealing element is arranged above the separator, the sealing element is fixedly connected with the first body, and the sealing element is detachably connected with the second body; the sealing element is fixedly connected with the vacuum connecting piece.
4. The automotive glass forming mold according to claim 1, characterized in that: the upper male die is fixed on the upper frame, the upper frame comprises a frame main body, a plurality of limiting devices and a plurality of matching limiting devices, the limiting devices are respectively fixed above the frame main body, the matching limiting devices are respectively fixed below the frame main body, and the positions of the limiting devices relative to the frame main body are matched with the positions of the matching limiting devices relative to the frame main body.
5. The automotive glass forming mold according to claim 4, characterized in that: the limiting device comprises a limiting seat, a limiting block and a limiting gasket, the limiting seat is fixed right above the limiting gasket, and the limiting block is arranged below the limiting seat and above the limiting gasket; the matching limiting device comprises a hanging rod, a matching limiting part, an adjusting gasket and a limiting connecting piece, the matching limiting part is opposite to the position of the frame body, the limiting gasket is opposite to the position of the frame body, the hanging rod is arranged in the middle of the matching limiting part, the hanging rod extends upwards to extend through the frame body, the hanging rod is located under the limiting block, the mounting direction of the hanging rod is perpendicular to the mounting direction of the matching limiting part, the hanging rod can slide relative to the matching limiting part, one end of the hanging rod is detachably connected with the limiting block, the other end of the hanging rod is fixedly connected with the upper convex die, and the adjusting gasket is arranged between the hanging rod and the upper convex die.
6. The automotive glass forming mold according to claim 1, characterized in that: the automobile glass forming die further comprises a plurality of adjusting devices and a fixed cross rod, the adjusting devices are fixed on the fixed cross rod simultaneously, the adjusting devices and the fixed cross rod are located above the upper male die, and the adjusting devices are used for adjusting the pressing degree of the upper male die to the glass plate.
7. The automotive glass forming mold according to claim 6, characterized in that: the adjusting device comprises a movable frame, a connecting frame, a counterweight cylinder and a fixing plate, wherein the movable frame is arranged on the side edge of the connecting frame and can slide relative to the connecting frame; the counterweight cylinder is arranged in the connecting frame, the movable part of the counterweight cylinder is fixedly connected with the top of the movable frame, the driving part of the counterweight cylinder is fixed on the upper fixing part of the connecting frame, the driving part of the counterweight cylinder is positioned above the lower fixing part of the connecting frame, and the counterweight cylinder can be detachably connected with the lower fixing part of the connecting frame; the lower fixing part of the connecting frame is fixedly connected with the fixed cross rod through the fixed plate, the movable frame comprises a lower telescopic rod, and the movable frame can move along with the movable part of the counterweight cylinder along the installation direction of the counterweight cylinder in a linear lifting motion mode.
8. A method for producing an automobile glass using the automobile glass molding die according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:
step 1: placing the glass plate softened after heating on a lower concave die;
step 2: controlling the upper male die to move towards the direction close to the lower female die, and controlling the upper male die to mold the glass plate positioned on the lower female die;
and step 3: controlling the upper male die to adsorb the glass plate positioned on the lower female die;
and 4, step 4: controlling the upper male die to maintain the glass plate to be adsorbed for at least 0.2 second;
and 5: controlling the middle part of the upper male die to stop adsorbing the glass plate, and controlling the edge part of the upper male die to continuously adsorb the glass plate;
and 6: the upper male mold is controlled to release the glass sheet to form a bent glass sheet.
9. The method for producing automotive glass according to claim 8, characterized in that: in step 3, the vacuum pressure at the edge part of the upper male die is 5 to 30 kPa, and the vacuum pressure at the middle part of the upper male die is 40 to 80 kPa.
10. The method for producing automotive glass according to claim 8, characterized in that: in the step 4, the upper male die is controlled to maintain the glass plate to be adsorbed for 0.2-6 seconds.
11. The method for producing automotive glass according to claim 8, characterized in that: in step 5, controlling the edge part of the upper male die to continuously adsorb the glass plate for 3-6 seconds.
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| CN202110384506.7A CN113060929B (en) | 2021-04-09 | 2021-04-09 | Automobile glass forming die and production method |
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| CN202110384506.7A CN113060929B (en) | 2021-04-09 | 2021-04-09 | Automobile glass forming die and production method |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06256030A (en) * | 1993-03-02 | 1994-09-13 | Nippon Sheet Glass Co Ltd | Bending of sheet glass |
| US5669952A (en) * | 1994-10-14 | 1997-09-23 | Ppg Industries, Inc. | Pressure forming of glass sheets |
| US7866187B2 (en) * | 2003-09-24 | 2011-01-11 | Pilkington North America, Inc. | Press bending station for the bending of glass sheets |
| EP1798206B2 (en) * | 2005-12-14 | 2012-09-26 | Asahi Glass Company, Limited | Method and apparatus for bending a glass sheet |
| CN104193154B (en) * | 2014-08-15 | 2017-05-24 | 福耀集团（上海）汽车玻璃有限公司 | Improved mold for out-of-furnace press forming of automobile laminated glass |
| MX2017005445A (en) * | 2014-10-28 | 2017-06-29 | Saint Gobain | Tool for a glass-bending process. |
| CN205635356U (en) * | 2016-04-29 | 2016-10-12 | 福耀集团（上海）汽车玻璃有限公司 | A terrace die for glass shaping process |
| GB201708761D0 (en) * | 2017-06-01 | 2017-07-19 | Pilkington Group Ltd | Method and apparatus for shaping a glass sheet |
| CN211645042U (en) * | 2019-07-08 | 2020-10-09 | 天津泓德汽车玻璃有限公司 | Mold vacuum switching system for glass forming |
| CN110316944B (en) * | 2019-07-10 | 2020-12-04 | 福耀玻璃工业集团股份有限公司 | Ceramic mould for glass plate bending |
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