CN116715424A - Hot bending die and hot bending equipment - Google Patents
Hot bending die and hot bending equipment Download PDFInfo
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- CN116715424A CN116715424A CN202310658831.7A CN202310658831A CN116715424A CN 116715424 A CN116715424 A CN 116715424A CN 202310658831 A CN202310658831 A CN 202310658831A CN 116715424 A CN116715424 A CN 116715424A
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- 238000013003 hot bending Methods 0.000 title claims abstract description 60
- 239000011521 glass Substances 0.000 claims abstract description 81
- 238000005452 bending Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 10
- 230000002596 correlated effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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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
- C03B23/0302—Re-forming glass sheets by bending by press-bending between shaping moulds between opposing full-face 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
Abstract
The present disclosure provides a hot bending die and a hot bending apparatus, including an upper die assembly and a lower die assembly. The upper die assembly comprises an upper die base and a first lug arranged at the bottom of the upper die base, and the bottom surface of the first lug is a first bending surface. The lower die assembly comprises a lower die holder, a second lug and a middle frame, wherein the second lug and the middle frame are arranged at the top of the lower die holder, and the top surface of the second lug is a second bending surface. The middle frame is sleeved on the outer side of the second lug, and the intersection of the inner side surface of the middle frame and the second bending surface is in line contact. During hot bending, the first bending surface and the second bending surface are respectively pressed on two opposite sides of the glass to be processed in the cavity and guide the glass to be processed to bend. Because the lower die assembly is designed in a split mode, the inner side surfaces of the first bending surface and the middle frame can be processed independently, after the middle frame and the second convex blocks are combined, the edge of the second bending surface is in line contact with the inner side surface of the middle frame, and because an R angle does not exist, the hot bending forming of the edge of the glass is not affected when the hot bending processing is carried out.
Description
Technical Field
The disclosure relates to the technical field of dies, in particular to a hot bending die and hot bending equipment.
Background
In the 3D glass processing industry, a hot bending mold is an important processing tool in glass molding, and a glass product is heated and softened by heat conduction and is bent and molded under the guidance of the hot bending mold. At present, a conventional mold is composed of an upper mold assembly and a lower mold assembly, and the mold is processed through CNC, and when a cavity of the lower mold assembly is processed, CNC milling is needed. When the boundary position of the side face and the bottom face of the cavity is machined, the boundary position finally forms an R angle for transition due to the structural limitation of the cutter, but the existence of the R angle can influence the side edge of the product in hot bending forming.
Therefore, how to solve the problem that the junction between the side wall and the bottom surface of the cavity of the lower die assembly has the R angle in the related art so as to affect the hot bending molding of the product is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
One technical problem to be solved by the present disclosure is: the problem that the R angle exists at the intersection of the side wall of the cavity of the lower die assembly and the die core surface of the die so as to influence the hot bending and forming of the product.
To solve the above technical problem, an embodiment of the present disclosure provides a hot bending mold for hot bending glass to be processed, including:
the upper die assembly comprises an upper die base and a first lug, wherein the first lug is arranged at the bottom of the upper die base, and the bottom surface of the first lug is a first bending surface; and
the lower die assembly comprises a lower die holder, a second lug and a middle frame, wherein the second lug is arranged at the top of the lower die holder, the top surface of the second lug is a second bending surface, the middle frame is sleeved on the outer side of the second lug, the inner side surface of the middle frame and the second bending surface enclose a cavity, and the intersection of the inner side surface of the middle frame and the second bending surface is in line contact;
the first bending surface and the second bending surface are used for being respectively pressed on two opposite sides of the glass to be processed in the cavity and guiding the glass to be processed to bend.
In some embodiments, a deformation member is disposed between the middle frame and the upper die holder, and the height of the deformation member is inversely related to the ductility of the glass to be processed.
In some embodiments, the deformable member is a thermal deformable member, and the ductility of both the thermal deformable member and the glass to be processed are positively correlated with temperature.
In some embodiments, the material of the thermal deformation is the same as the material of the glass to be processed.
In some embodiments, the thermal deformation is a glass sphere.
In some embodiments, a plurality of positioning grooves are further formed in one side, away from the lower die holder, of the middle frame, the deformation piece is arranged in the positioning grooves, and the initial height of the deformation piece is larger than the depth of the positioning grooves.
In some embodiments, the volume of the detent is greater than or equal to the volume of the thermal deformation.
In some embodiments, the first curved surface is a downwardly convex curved surface and the second curved surface is a downwardly concave curved surface.
In some embodiments, when the top surface of the middle frame is in contact with the upper die holder and the bottom surface of the middle frame is in contact with the lower die holder, the distance between the first curved surface and the second curved surface is equal to the thickness of the glass to be processed.
Embodiments of the present disclosure also provide a hot bending apparatus comprising a hot bending die as described above.
Through above-mentioned technical scheme, the hot bending mould that this disclosure provided includes mould subassembly and bed die subassembly. The upper die assembly comprises an upper die base and a first lug, the first lug is arranged at the bottom of the upper die base, and the bottom surface of the first lug is a first bending surface. The lower die assembly comprises a lower die base, a second lug and a middle frame, wherein the second lug is arranged at the top of the lower die base, and the top surface of the second lug is a second bending surface. The middle frame is sleeved on the outer side of the second protruding block, the inner side surface of the middle frame and the second bending surface enclose a synthetic cavity, and the intersection of the inner side surface of the middle frame and the second bending surface is in line contact. When the glass to be processed is subjected to hot bending, the glass is positioned in the cavity, and the first bending surface and the second bending surface are respectively pressed on two opposite sides of the glass to be processed in the cavity and guide the glass to be processed to bend. Because the lower die assembly of the present disclosure adopts split design for the medial surface of first curved surface and center can be processed alone, wait to process the back of accomplishing, with center and second lug combination, the edge of second curved surface is laminated each other with the medial surface of center, and the juncture between the two forms a line, because there is not the R angle, consequently when carrying out hot bending processing, the hot bending shaping of glass side is not influenced.
The hot bending device provided by the embodiment of the disclosure has the same advantages as the above because the hot bending die is arranged.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic three-dimensional structure of a hot-bending die before clamping according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of a hot-bending die prior to closing in accordance with an embodiment of the present disclosure;
FIG. 3 is a schematic view of a three-dimensional structure of a hot-bending die after clamping according to an embodiment of the present disclosure;
FIG. 4 is a cross-sectional view of a hot-bending die after closing in accordance with an embodiment of the present disclosure;
FIG. 5 is a front view of an upper die base and a first bump as disclosed in an embodiment of the present disclosure;
FIG. 6 is a top view of a center frame provided by an embodiment of the present disclosure;
fig. 7 is a front view of a lower die holder and a second bump provided by an embodiment of the present disclosure.
Reference numerals illustrate:
100. an upper mold assembly; 110. an upper die holder; 120. a first bump; 121. a first curved surface; 200. a lower die assembly; 210. a lower die holder; 220. a second bump; 221. a second curved surface; 230. a middle frame; 310. a thermal deformation member; 320. a positioning groove; 400. and (5) processing glass.
Detailed Description
Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the disclosure and not to limit the scope of the disclosure, which may be embodied in many different forms and not limited to the specific embodiments disclosed herein, but rather to include all technical solutions falling within the scope of the claims.
The present disclosure provides these embodiments in order to make the present disclosure thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.
In the description of the present disclosure, unless otherwise indicated, the meaning of "plurality" is greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present disclosure. When the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.
Furthermore, the use of the terms first, second, and the like in this disclosure do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements.
It should also be noted that, in the description of the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present disclosure may be understood as appropriate by those of ordinary skill in the art. When a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device.
All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure pertains, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.
The hot bending die and the hot bending apparatus provided by the embodiments of the present disclosure are described below with reference to fig. 1 to 7.
The present disclosure provides a hot bending mold for hot bending 2D glass into 3D glass. The hot-bending die includes an upper die assembly 100 and a lower die assembly 200.
The upper die assembly 100 includes an upper die holder 110 and a first bump 120, the first bump 120 is disposed at the bottom of the upper die holder 110, and the bottom surface of the first bump 120 is a first curved surface 121.
In some embodiments, the upper die holder 110 may have a rectangular plate structure, and a portion of the first bump 120 near the upper die holder 110 is also a rectangular plate structure, and a first curved surface 121 is disposed on a side of the first bump 120 away from the upper die holder 110, that is, a bottom of the first bump 120.
The lower die assembly 200 includes a lower die holder 210, a second bump 220 and a middle frame 230, the second bump 220 is disposed on top of the lower die holder 210, and a top surface of the second bump 220 is a second curved surface 221. The middle frame 230 is sleeved on the outer side of the second bump 220, the inner side surface of the middle frame 230 and the second curved surface 221 enclose a cavity, and the radius of the R angle at the intersection of the inner side surface of the middle frame 230 and the second curved surface 221 is zero. Wherein, the R angle refers to an inner arc angle or an outer arc angle at the intersection of two planes.
In some embodiments, the lower die holder 210 may have a rectangular plate structure, a portion of the second bump 220 adjacent to the lower die holder 210 may have a rectangular block structure, and a top portion of the second bump 220 may have a second curved surface 221. In this embodiment, the outer side surface of the second bump 220 is perpendicular to the top surface of the lower die holder 210.
The middle frame 230 may have a rectangular frame structure having a hollow inside, and the hollow portion of the middle frame 230 may have a rectangular parallelepiped structure. When the middle frame 230 is sleeved outside the second bump 220, the inner side surface of the middle frame 230 may be attached to the outer side surface of the second bump 220.
The thickness of the middle frame 230 along the direction perpendicular to the lower die holder 210 is greater than the thickness of the second bump 220, and a space between a portion of the inner side surface of the middle frame 230 beyond the second curved surface 221 and the second curved surface 221 is a cavity.
In the hot bending process, the glass 400 to be processed may be placed in the cavity, and the first curved surface 121 of the first bump 120 and the second curved surface 221 of the second bump 220 are respectively pressed against two opposite sides of the glass 400 to be processed.
In the hot bending die provided by the disclosure, the lower die assembly 200 is set to be in a separable structure, one part is a lower die holder 210 and a second bump 220 which form a lower die body, the lower die holder and the second bump are in an integrated structure, the other part is a middle frame 230, the middle frame 230 and the lower die body are independently processed, and the lower die assembly is assembled after the processing is completed, and a cavity is formed between the middle frame 230 and the lower die body after the assembly.
In the related art, the lower mold assembly 200 is of an integral structure, an included angle exists between the bottom surface and the side surface of the cavity, the position of the included angle is limited by the cutter structure during processing, an R angle is formed, and the existence of the R angle affects the side edge of the glass during the hot bending process.
In the design form of the present disclosure, the inner side surface of the middle frame 230 and the second curved surface 221 of the second bump 220 may be processed respectively, the two surfaces are not affected by each other during processing, the two surfaces are assembled after being processed separately, the edge of the second curved surface 221 is attached to the inner side surface of the middle frame 230 after the assembly is completed, the two surfaces are in line contact, the radius of the R angle is zero, or the R angle does not exist between the two surfaces, that is, the problem that the R angle affects the formation of the glass side edge does not exist.
In the related art, when a mold is closed for a large-curvature glass product, the phenomenon of uneven stress can exist due to the fact that the difference between the 2D plate and the profiling surface of the mold is large, so that the problem of breakage easily occurs in the processing process, and the overall yield is affected.
To this end, in some embodiments of the present disclosure, a deforming member is further disposed between the middle frame 230 and the upper die assembly 100, specifically, between the top of the middle frame 230 and the bottom surface of the upper die base 110. Wherein the height of the deformable member is inversely related to the ductility of the glass 400 to be processed, i.e., the stronger the ductility of the glass 400 to be processed, the lower the height of the deformable member. .
In the glass hot bending process, the glass 400 to be processed needs to be heated in the heat conduction direction, along with the rising of the temperature, the ductility of the glass 400 to be processed is improved, the higher the ductility of the glass 400 to be processed is, the larger the bearable deformation amount is, and if the ductility of the glass 400 to be processed cannot bear the larger deformation amount, excessive pressing of the die assembly 100 can lead to breakage of the glass 400 to be processed.
The hot bending mold provided in the embodiments of the present disclosure is provided with a deforming member having a height inversely related to the ductility of the glass 400 to be processed between the middle frame 230 and the upper mold assembly 100. Before the hot bending begins, the deformable member supports the upper mold assembly 100 above the glass 400 to be processed, at which point the glass 400 to be processed is a flat glass. With the continuous increase of the temperature of the glass 400 to be processed, the ductility of the glass 400 to be processed is enhanced, and since the height of the deformation member is inversely related to the ductility of the glass 400 to be processed, the height of the deformation member is reduced, and the upper mold assembly 100 is moved downward, so that the glass 400 to be processed is pressed down, and the glass 400 to be processed is deformed until the upper mold assembly 100 is pressed down to a preset position.
According to the hot bending die provided by the embodiment of the disclosure, the height of the deformation piece can be changed according to the ductility adaptability of the glass 400 to be processed, the upper die assembly 100 can be ensured to be pressed down according to the bearable deformation amount of the glass 400 to be processed, and the problem that the glass 400 to be processed breaks due to excessive pressing of the upper die assembly 100 is prevented.
In some embodiments, the deformation member may be a thermal deformation member 310, further, the ductility of the thermal deformation member 310 and the glass 400 to be processed are positively correlated with the temperature, and the ductility of the thermal deformation member 310 and the glass 400 to be processed are improved to the same extent with the rise of the temperature.
During the hot bending process, the hot deforming member 310 and the glass 400 to be processed are both in contact with the upper mold assembly 100 and the lower mold assembly 200, and the same heat conduction process is performed, and thus the temperature rising speed of the hot deforming member 310 and the glass 400 to be processed is the same. Because the degree of improvement of the ductility of the thermal deformation member 310 and the glass 400 to be processed is the same as the temperature rise, when the ductility of the thermal deformation member 310 is improved to a certain degree, the ductility of the glass 400 to be processed is also improved to the same degree, and at this time, the thermal deformation member 310 is insufficient to support the pressing force of the upper mold assembly 100, so that the upper mold assembly 100 presses the thermal deformation member 310, and thus the height of the upper mold assembly 100 is reduced, and at the same time, the upper mold assembly 100 presses the glass 400 to be processed, so that the glass 400 to be processed is also deformed.
Therefore, in the hot bending mold provided by the present disclosure, the degree of improvement of the ductility of the hot deforming member 310 and the glass 400 to be processed is the same along with the temperature rise, so when the upper mold assembly 100 presses the hot deforming member 310 to cause deformation, it is indicated that the glass 400 to be processed can also be pressed and deformed to a certain extent at this time, and the problem of breaking the glass 400 to be processed can be avoided by controlling the height of the upper mold assembly 100 by the hot deforming member 310.
In some embodiments, in order to make the ductility of the thermal deformation member 310 and the glass 400 to be processed positively correlated with temperature, and the ductility of the thermal deformation member 310 and the glass 400 to be processed are improved to the same extent according to the change of temperature, the thermal deformation member 310 may be made of the same material as the glass 400 to be processed. For example, the thermal deformation 310 may be a glass sphere.
During hot bending, the thermal deformation member 310 made of the same material as the glass 400 to be processed can be placed between the middle frame 230 and the upper die holder 110, so as to ensure that the ductility of the thermal deformation member 310 is increased to the same extent with the temperature rise of the glass 400 to be processed. In the present disclosure, the material of the thermal deformation member may be the same as the material of the glass 400 to be processed, but may be other materials, so long as the thermal deformation member is ensured to have the same degree of improvement of the ductility of the glass 400 to be processed along with the temperature rise.
In some embodiments, to fix the position of the thermal deformation 310 and prevent it from moving in the horizontal direction, a plurality of positioning grooves 320 may be provided at a side of the middle frame 230 away from the lower die holder 210. The positioning groove 320 may be a rectangular groove extending downward from the top surface of the middle frame 230.
Since the three support points define one plane, the number of the positioning grooves 320 is greater than or equal to three, and the three positioning grooves 320 are not collinear when arranged.
Referring to fig. 6, four positioning grooves 320 are provided, which are respectively provided in four directions of front, rear, left and right of the top surface of the middle frame 230, corresponding to fig. 6, i.e., up, down, left and right directions.
Glass spheres or glass blocks as the thermal deformation 310 may be disposed in the positioning grooves 320, and the positioning grooves 320 may limit the position of the thermal deformation 310.
When the deforming member is disposed in the positioning groove 320 and before the hot bending is performed, the height of the deforming member needs to be greater than the depth of the positioning groove 320 in order to avoid the first bending surface 121 of the upper mold assembly 100 from contacting the glass 400 to be processed. In other words, the top of the deformable member is required to extend beyond the top surface of the middle frame 230 a distance to support the upper mold assembly 100 away from the lower mold assembly 200, preventing the first curved surface 121 of the upper mold assembly 100 from contacting the glass 400 to be processed.
For example, the height H of the thermal deformation 310 is greater than or equal to the curved depth H of the second curved surface 221 1 And the depth H of the positioning groove 320 2 The sum of H and H 1 +H 2 In a preferred embodiment, h=1.1h 1 +H 2 。
If H is too large, the cross section or depth of the positioning groove 320 may become large in order to satisfy the condition that the volume of the positioning groove 320 is greater than or equal to the volume of the thermal deformation 310. If the depth is increased, the height H of the thermal deformation member 310 is also increased, so that the cross-sectional area of the thermal deformation member 310 can be reduced only to ensure that the volume of the thermal deformation member 310 is not changed, and the support stability of the thermal deformation member 310 is reduced due to the reduced cross-sectional area. If the cross-sectional area of the positioning groove 320 is larger, the difference between the cross-sectional area of the thermal deformation member 310 and the cross-sectional area of the positioning groove 320 is larger, which also results in the support stability of the thermal deformation member 310 being lowered.
The depth of the positioning groove 320 is preferably greater than the radius of the thermal deformation member 310, the thermal deformation member 310 may be a sphere, the cross section of the positioning groove 320 may be a square, and the diameter of the sphere may be equal to the side length of the square, so that the thermal deformation member 310 is relatively stable when placed and is not easy to move.
In some embodiments, the volume of the detents 320 need to be greater than or equal to the volume of the thermal deformation 310. When the ductility of the thermal deformation member 310 is improved and the thermal deformation member 310 is deformed due to the pressing of the thermal deformation member 310 by the upper die assembly 100, the volume of the positioning groove 320 is larger than that of the thermal deformation member 310, so that the thermal deformation member 310 is always located in the positioning groove 320, and finally, the bottom surface of the upper die base 110 can be ensured to be in contact with the top surface of the middle frame 230.
In some embodiments, the first curved surface 121 may be a downwardly convex curved surface and the second curved surface 221 may be a downwardly concave curved surface, such that the heated 2D glass may be thermally bent into a 3D glass when the first curved surface 121 and the second curved surface 221 are close to each other.
In some embodiments, when the bottom surface of the upper die holder 110 contacts the top surface of the middle frame 230 and the top surface of the lower die holder 210 contacts the bottom surface of the middle frame 230, the distance between the first curved surface 121 and the second curved surface 221 is equal to the thickness of the glass 400 to be processed. In this way, the middle frame 230 can limit the distance between the upper die holder 110 and the lower die holder 210, so as to prevent the upper die holder 110 from being excessively pressed down, resulting in thinning of the thickness of the glass 400 to be processed and affecting the yield.
As other embodiments, the first curved surface 121 and the second curved surface 221 are adapted, and when the thickness of glass to be curved is not uniform, the arc profile of the cross section of the first curved surface 121 may be different from the arc profile of the cross section of the second curved surface 221. For example, the cross-section of the first curved surface 121 gradually increases in curvature from the middle to both sides, and the cross-section of the second curved surface 221 is the same in curvature from the middle to both sides.
Further, the embodiment of the present disclosure further provides a hot bending apparatus, which is provided with the hot bending mold as described above, so that the same beneficial effects as described above can be obtained, and will not be described herein.
Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.
Claims (10)
1. A hot bending die for hot bending glass (400) to be processed, comprising:
the upper die assembly (100), wherein the upper die assembly (100) comprises an upper die holder (110) and a first lug (120), the first lug (120) is arranged at the bottom of the upper die holder (110), and the bottom surface of the first lug (120) is a first bending surface (121); and
the lower die assembly (200), the lower die assembly (200) comprises a lower die holder (210), a second protruding block (220) and a middle frame (230), the second protruding block (220) is arranged at the top of the lower die holder (210), the top surface of the second protruding block (220) is a second bending surface (221), the middle frame (230) is sleeved on the outer side of the second protruding block (220), the inner side surface of the middle frame (230) and the second bending surface (221) enclose a cavity, and the inner side surface of the middle frame (230) is in line contact with the edge of the top surface of the second protruding block (220);
the first bending surface (121) and the second bending surface (221) are used for respectively pressing two opposite sides of the glass (400) to be processed in the cavity and guiding the glass (400) to be processed to bend.
2. The hot-bending mold according to claim 1, characterized in that a deformation is provided between the intermediate frame (230) and the upper mold base (110), the height of the deformation being inversely related to the ductility of the glass (400) to be processed.
3. The hot-bending die as claimed in claim 2, wherein the deformable member is a thermal deformable member (310), and the ductility of both the thermal deformable member (310) and the glass (400) to be processed are positively correlated with temperature.
4. A hot-bending mould according to claim 3, characterized in that the material of the thermal deformation member (310) is the same as the material of the glass (400) to be processed.
5. The hot-bending die of claim 4, wherein the thermal deformation member (310) is a glass sphere.
6. The hot bending die as claimed in claim 4, wherein a plurality of positioning grooves (320) are further provided on a side of the middle frame (230) away from the lower die holder (210), the deformation member is disposed in the positioning grooves (320), and an initial height of the deformation member is greater than a depth of the positioning grooves (320).
7. The hot-bending die as claimed in claim 6, wherein the volume of the positioning groove (320) is greater than or equal to the volume of the thermal deformation member (310).
8. The hot-bending die according to any one of claims 1 to 7, wherein the first curved surface (121) is a curved surface that is convex downward, and the second curved surface (221) is a curved surface that is concave downward.
9. The hot-bending mold according to claim 8, wherein when the top surface of the middle frame (230) is in contact with the upper die holder (110) and the bottom surface of the middle frame (230) is in contact with the lower die holder (210), the distance between the first curved surface (121) and the second curved surface (221) is equal to the thickness of the glass (400) to be processed.
10. A hot bending apparatus comprising a hot bending die according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310658831.7A CN116715424A (en) | 2023-06-05 | 2023-06-05 | Hot bending die and hot bending equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310658831.7A CN116715424A (en) | 2023-06-05 | 2023-06-05 | Hot bending die and hot bending equipment |
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| CN116715424A true CN116715424A (en) | 2023-09-08 |
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| CN202310658831.7A Pending CN116715424A (en) | 2023-06-05 | 2023-06-05 | Hot bending die and hot bending equipment |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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