Glass hot bending mold

Abstract

This application provides a glass hot bending mold. The glass hot bending using the mold includes a width side and four corners. The mold includes a forming ring, an auxiliary forming device, and corner forming parts. The auxiliary forming device includes an auxiliary forming arm, which is movably connected to the forming ring. One end of the corner forming part is hinged to the forming ring, and the other end is connected to the auxiliary forming arm. The corner forming part separates from the auxiliary forming arm when the auxiliary forming arm moves relative to the forming ring. When connected, the corner forming part and the auxiliary forming arm can provide support for the width side and corners of the glass.

Description

Technical Field

[0001] This application relates to the field of automotive glass technology, specifically to a glass hot bending mold. Background Technology

[0002] Aesthetically pleasing and with smooth lines, hot-bent glass is increasingly used in the automotive industry as automotive window glass. In existing technologies, forming rings located on the sides and corners of the hot-bending mold support the automotive glass to assist in the hot-bending process, reducing the amount of glass suspended. In particular, the moving forming ring promotes the formation of spherical corners during the hot-bending process. However, existing moving forming rings are prone to touching the glass when falling, affecting the surface quality. Summary of the Invention

[0003] This application provides a glass hot bending mold to solve the problem that the moving forming ring touches the glass during demolding after the existing glass forming process, which affects the forming quality.

[0004] This application provides a glass hot bending mold. The glass hot bent using the glass hot bending mold includes a wide side and four corners, and includes a forming ring, an auxiliary forming device and corner forming parts.

[0005] The auxiliary molding device includes an auxiliary molding arm, which is movably connected to the molding ring;

[0006] One end of the corner forming component is hinged to the forming ring, and the other end is connected to the auxiliary forming arm. The corner forming component separates from the auxiliary forming arm when the auxiliary forming arm and the forming ring move relative to each other.

[0007] When connected, the corner forming component and the auxiliary forming arm can provide support for the width sides and corners of the glass.

[0008] In one embodiment, when the corner molding component is connected to the auxiliary molding arm, the top of the corner molding component is flush with or smoothly transitions to the top of the auxiliary molding arm.

[0009] In one embodiment, along the height direction of the glass hot bending mold, the height of the end of the corner forming member connected to the forming ring is less than the height of the end of the corner forming member engaged with the auxiliary forming arm.

[0010] In one embodiment, the corner forming part includes an arc-shaped forming surface, the forming ring includes an arc-shaped top surface, and the arc-shaped forming surface and the arc-shaped top surface are arranged side by side along the width direction of the glass hot bending mold;

[0011] With the corner forming part connected to the auxiliary forming arm, along the height direction of the glass hot bending mold, the arc forming surface is higher than the arc top surface, and the curvature of the arc forming surface is smaller than the curvature of the arc top surface.

[0012] In one embodiment, the auxiliary forming arm has a slot, and the corner forming part is detachably disposed within the slot.

[0013] In one embodiment, a limiting piece is provided at one end of the corner molding part, and the corner molding part is detachably disposed on the bayonet through the limiting piece.

[0014] In one embodiment, the auxiliary molding device further includes an adjustment section for controlling the connection or separation of the corner molding part from the auxiliary molding arm.

[0015] In one embodiment, the adjusting part includes a support rod, a sleeve, and a push rod. A first locking plate protrudes from the outer periphery of the sleeve, and a second locking plate protrudes from the outer periphery of the push rod.

[0016] The sleeve is fixed to the forming ring, the push rod is inserted into the sleeve along the axial direction of the sleeve, and the second locking plate abuts against the first locking plate along the height direction of the forming ring;

[0017] One end of the support rod is connected to the auxiliary forming arm, and the other end abuts against the second locking plate, and the push rod can move along the axial direction of the sleeve.

[0018] In one embodiment, the auxiliary molding device further includes a connector, one end of which is connected to the auxiliary molding arm and the other end is hinged to the molding ring. The connector is used to support the auxiliary molding arm when the adjustment part controls the movement of the auxiliary molding arm.

[0019] In one embodiment, the auxiliary forming arm includes a forming plate and a reinforcing plate, the forming plate and the reinforcing plate are connected and spaced apart from each other, the connecting member includes a connecting frame and a connecting rod connected to the auxiliary forming arm, one end of the connecting rod is connected to the reinforcing plate, and the other end is rotatably connected to the connecting frame, and the latch is provided at the end of the forming plate in the length direction.

[0020] In one embodiment, the forming ring includes a fixed forming part and a movable forming part, the movable forming part being hinged to both ends of the fixed forming part, and the corner forming part and the auxiliary forming arm being located outside the movable forming part; the corner forming part is located in the width direction of the glass hot bending mold and is rotatably connected to the movable forming part.

[0021] In one embodiment, the fixed forming part includes two first forming arms, and the movable forming part includes two second forming arms. The two second forming arms are arranged opposite to each other along the length direction of the forming ring. One second forming arm is movably connected to the ends of the two first forming arms on the same side, and the other second forming arm is movably connected to the other end of the two first forming arms.

[0022] The auxiliary molding arm is movably connected to the side of the second molding arm facing away from the first molding arm; one end of the corner molding part is hinged to the end of the second molding arm that is connected to the first molding arm, and the other end is detachably connected to the auxiliary molding arm.

[0023] In one embodiment, the forming ring includes a counterweight connected to the end of the movable forming part away from the fixed forming part, and the counterweight is capable of controlling the movable forming part to rotate relative to the end of the fixed forming part that is hinged to the movable forming part.

[0024] In one embodiment, along the height direction of the glass hot bending mold, the distance between the auxiliary forming arm and the second forming arm is greater than or equal to 5 mm and less than or equal to 12 mm.

[0025] In one embodiment, along the width direction of the glass hot bending mold, the length distance between the two ends of the auxiliary forming arm protruding from the second forming arm is greater than or equal to 5 mm and less than or equal to 15 mm.

[0026] In one embodiment, the glass further includes a length side, and the forming ring has curvature in the directions of the length side and the width side of the glass, respectively.

[0027] In summary, by adopting a split design, this application enables the corner molding part and the molding plate to separate and fall separately during detachment without interfering with each other. This significantly reduces the possibility of the auxiliary molding device touching the car glass during the detachment process and greatly improves the molding quality of the glass surface. Attached Figure Description

[0028] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the glass hot bending mold provided in the embodiments of this application;

[0030] Figure 2 for Figure 1 The diagram shows the structure of the second forming arm;

[0031] Figure 3 for Figure 1 A schematic diagram of the glass hot bending mold from another angle;

[0032] Figure 4 for Figure 3 The diagram shows the structure of the auxiliary forming arm.

[0033] Figure 5 for Figure 3 An enlarged view of region M is shown below;

[0034] Figure 6 for Figure 3 An enlarged view of region N shown;

[0035] Figure 7 for Figure 1 The diagram shows the structure of the corner molding part.

[0036] Figure 8 for Figure 1 The diagram shows a partial structural schematic of a glass hot bending mold in its initial state.

[0037] Figure 9 for Figure 1 An enlarged view of region O shown;

[0038] Figure 10 for Figure 8 The diagram shows the structure of the glass hot bending mold in its second state. Detailed Implementation

[0039] This application provides a glass hot bending mold equipped with an auxiliary forming device. The auxiliary forming device is located on the sides and corners of the glass hot bending mold to support the forming of automotive glass, especially the windshield of a bus. It supports the portion of the glass suspended outside the mold, reducing the amount of glass suspended and improving the success rate of hot bending. The glass includes a length side, a width side, and four corners. After being placed in the hot bending mold and heated, the glass is bent and deformed by its own weight and the action of the mold, forming a curved glass with spherical corners.

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0041] Please see Figure 1 , Figure 1This is a schematic diagram of the structure of the glass hot bending mold 100 provided in the embodiments of this application.

[0042] For ease of description, define Figure 1 The width direction of the glass hot bending mold 100 shown is the X-axis direction, the length direction is the Y-axis direction, and the height direction is the Z-axis direction. The X-axis, Y-axis, and Z-axis directions are mutually perpendicular. The directional terms such as "upper" and "lower" mentioned in the description of the embodiments in this application are based on the appendix to the specification. Figure 1 The description of the orientation shown, with "up" referring to the positive direction of the Z-axis and "down" referring to the negative direction of the Z-axis, does not constitute a limitation on the actual application scenario of the glass hot bending mold 100.

[0043] The glass hot bending mold 100 includes a body 10, a forming ring 13, two auxiliary forming devices 20, and two corner forming parts 30 corresponding to each auxiliary forming device 20. The forming ring 13 is disposed on the body 10, and the auxiliary forming devices 20 are movably connected to the forming ring 13. The two auxiliary forming devices 20 are located at opposite ends of the forming ring 13. One end of the corner forming part 30 is rotatably connected to the forming ring 13, and the other end is detachably connected to the auxiliary forming device 20. When the corner forming part 30 is connected to the auxiliary forming arm 21, the corner forming part 30 is flush with or smoothly transitions to the top of the auxiliary forming arm 21. When the corner forming part 30 is flush with the top of the auxiliary forming arm 21, the tops of the corner forming part 30 and the auxiliary forming arm 21 are at the same horizontal height. When the top of the corner forming part 30 or the auxiliary forming arm 21 is arc-shaped, the connection between the tops of the corner forming part 30 and the auxiliary forming arm 21 forms a smooth transition according to their respective curvature. This can avoid a height difference between the tops of the corner forming part 30 and the auxiliary forming arm 21, thereby avoiding unnecessary defects on the width side of the glass during the forming process.

[0044] In this embodiment, the body 10 includes a base 11 and several support members 12. The base 11 is a rectangular frame, and the several support members 12 protrude from the base 11 and are spaced apart. The forming ring 13 is used for support and shaping during the heating and bending process of the flat glass plate. Specifically, the forming ring 13 has curvature in the directions of the length side and the width side of the glass, respectively. The forming ring 13 is a curved arc frame structure, and the surface used to support the glass to be formed is an arc surface. The forming ring 13 is fixed to the ends of the multiple support members 12 away from the base 11, and the bending direction of the forming ring 13 is opposite to the base 11.

[0045] The forming ring 13 includes a fixed forming part and a movable forming part. The movable forming part is hinged to both ends of the fixed forming part. When the corner forming part 30 is separated from the auxiliary forming device 20, the width sides and corners of the glass are supported by the movable forming part. Specifically, the fixed forming part includes two first forming arms 131, and the movable forming part includes two second forming arms 132. One second forming arm 132 connects to the ends of the two first forming arms 131 located on the same side, and the other second forming arm 132 connects to the other end of the two first forming arms 131.

[0046] In this embodiment, the first molding arm 131 is an arc-shaped rod, and the two first molding arms 131 are parallel and opposite to each other along the width direction (X-axis direction) of the molding ring 13. The first molding arms 131 extend along the length direction of the molding ring 13 and are bent away from the base 11. Several support members 12 support and connect the two first molding arms 131. Each first molding arm 131 includes a first end 1311, a second end 1312, and a molding surface 1313. Along the length direction of the first molding arm 131, the first end 1311 and the second end 1312 are opposite to each other. The molding surface 1313 is located between the first end 1311 and the second end 1312.

[0047] Please refer to the following: Figure 2 , Figure 2 for Figure 1 The diagram shows the structure of the second forming arm 132.

[0048] The second forming arm 132 is used to support the corners and ends of the glass. In this embodiment, the second forming arm 132 is a U-shaped rod, and includes a first sub-arm 133 and two second sub-arms 134. The two second sub-arms 134 are fixedly connected to the opposite ends of the first sub-arm 133, and the two second sub-arms 134 are arranged opposite each other and extend in the same direction. Each second forming arm 132 is movably connected to the first forming arm 131. The ends of the two second sub-arms 134 of one second forming arm 132 are rotatably connected to the first ends 1311 of the two first forming arms 131 via a pivot. The ends of the two second sub-arms 134 of the other second forming arm 132 are rotatably connected to the second ends 1312 of the two first forming arms 131 via a pivot. The first sub-arms 133 of the two second forming arms 132 are parallel and opposite each other.

[0049] In this embodiment, the second sub-arm 134 is arc-shaped, and the side of the second sub-arm 134 facing away from the main body 10 is an arc-shaped top surface 1344. The arc of the arc-shaped top surface 1344 of the second sub-arm 134 along the height direction (Z-axis direction) of the forming ring 13 is adapted to the curvature of the first forming arm 131, that is, the curvature of the arc-shaped top surface 1344 of the second sub-arm 134 can smoothly connect with the curvature of the first forming arm 131. The arc-shaped top surface 1344 of the second sub-arm 134 is used to support the corner of the glass.

[0050] Specifically, the second sub-arm 134 includes a first surface 1341, which is connected at an angle to the arc-shaped top surface 1344. The first surfaces 1341 of the two second sub-arms 134 are arranged opposite each other along the width direction (X-axis direction) of the forming ring 13. A connecting post 136 is also provided on the second sub-arm 134 for cooperating with the corner forming part 30. A support post 135 is spaced apart from the connecting post 136 on the first surface 1341. Specifically, the support post 135 is closer to the first sub-arm 133 than the connecting post 136. The connecting post 136 extends from the first surface 1341 along the width direction (X-axis direction) of the forming ring 13, and the support post 135 also extends from the first surface 1341 along the width direction (X-axis direction) of the forming ring 13. The first sub-arm 133 also includes a second surface 1331 and a third surface 1332, which are connected. The second surface 1331 is opposite to the two second sub-arms 134, and the second surface 1331 is connected between the two first surfaces 1341; the third surface 1332 is also connected between the two first surfaces 1341. It can be understood that the second forming arm 132 can rotate relative to the first forming arm 131 with one end of the first forming arm 131 as a fulcrum, wherein the axial direction of the rotation axis is the same as the width direction of the glass hot bending mold 100.

[0051] Please refer to the following: Figure 1 and Figure 3 , Figure 3 for Figure 1 A schematic diagram of the glass hot bending mold 100 from another angle.

[0052] The forming ring 13 also includes a counterweight 24, which is connected to the end of the movable forming part away from the fixed forming part. The counterweight 24 can control the movable forming part to rotate relative to the end of the fixed forming part that is hinged to the movable forming part. Specifically, it can control the rotation of the two second forming arms 132 relative to the first forming arm 131. In this embodiment, there are two movable forming parts, and two counterweights 24 are also provided to cooperate with them.

[0053] The counterweight section 24 includes a connecting rod 241 and two counterweight rods 243. Each counterweight rod 243 is equipped with a weighting component, enabling it to generate gravity. The two counterweight rods 243 are connected to both ends of the connecting rod 241 and are positioned opposite each other. The connecting rod 241 connects between two second forming arms 132. When the two counterweight rods 243 are raised relative to the main body 10, they cause the second forming arms 132 to rotate towards the main body 10, thereby causing the arc-shaped top surface 1344 to rotate towards the main body 10, allowing the arc-shaped top surface 1344 to smoothly connect with the forming surface 1313 of the first forming arm 131. When the two counterweight rods 243 descend relative to the main body 10, they can use their own gravity to drive the second forming arms 132 to rotate relative to the first forming arm 131 at the hinged end, causing the second forming arms 132 to rotate away from the main body 10 and tilt upwards, increasing the angle between them and the first forming arm 131.

[0054] When a flat glass plate is placed on the forming ring 13, the second forming arm 132 is pressed and rotates. At this time, the counterweight 24 is also lifted, so that the arc-shaped top surface 1344 is smoothly connected to the forming surface 1313 of the first forming arm 131. As the glass softens and bends, the torque applied by the counterweight rod 243 with the weighting accessory is greater than the torque applied by the glass to the second forming arm 132, so that the second forming arm 132 will rotate and tilt up as the glass bends, and the glass will fit with the arc-shaped top surface 1344 until the shape of the corner arc of the glass is achieved.

[0055] Please refer to the following: Figure 4 and Figure 5 , Figure 4 for Figure 3 The schematic diagram of the auxiliary forming arm 21 shown is as follows. Figure 5 for Figure 3 A magnified view of part of the structure of region M is shown.

[0056] The auxiliary molding device 20 includes an auxiliary molding arm 21, an adjusting part 23, and a connecting member 25. The connecting member 25 connects the molding ring 13 and the auxiliary molding arm 21, and can rotate with the auxiliary molding arm 21 relative to the molding ring 13. The adjusting part 23 is used to support the position of the auxiliary molding arm 21 relative to the molding ring 13, and can control the connection or separation of the corner molding part 30 from the auxiliary molding arm 21.

[0057] like Figure 8 The auxiliary forming arm 21 is a long rod with two bayonets 216 for connecting to the corner forming part 30. In this embodiment, the auxiliary forming arm 21 has an "L" shaped cross-section and includes a forming plate 212 and a reinforcing plate 213. The forming plate 212 and the reinforcing plate 213 are connected and set at an angle.

[0058] Specifically, the forming plate 212 is generally a rectangular thin plate, including a first surface 2121 and a second surface 2122 disposed opposite to each other, and an auxiliary forming surface 2123 connecting the first surface 2121 and the second surface 2122. The reinforcing plate 213 is generally a rectangular thin plate, with one side connected to the side of the second surface 2122 away from the auxiliary forming surface 2123; the length direction of the forming plate 212 is the same as the length direction of the reinforcing plate 213.

[0059] The molding plate 212 is provided with two latches 216. The two latches 216 are recessed into the molding plate 212 from the auxiliary molding surface 2123, and extend through the first surface 2121 and the second surface 2122 of the molding plate 212 along its thickness direction. The two latches 216 are located at opposite ends along the length of the molding plate 212. One end of the corner molding part 30 is rotatably connected to the movable molding part, and the other end is disposed within the latches 216, disengaging from the latches 216 when the auxiliary molding arm 21 moves.

[0060] like Figure 5 In this embodiment, the connecting member 25 includes a first rod 251, a steering block 253, a second rod 252, a rotating cylinder 255, and a third rod 254. Specifically, the third rod 254 is fixedly connected to the connecting rod 241, and the rotating cylinder 255 is sleeved on the third rod 254, allowing the rotating cylinder 255 to rotate freely on the third rod 254 along its axial direction (X-axis direction). One end of the first rod 251 is connected to the auxiliary forming arm 21, and the other end is connected to the steering block 253; one end of the second rod 252 is fixedly connected to the rotating cylinder 255, and the other end is movably connected to the first rod 251 via the steering block 253. The auxiliary molding arm 21 is unlocked from the molding ring 13 through the adjustment part 23. The gravity of the steering block 253 drives the first rod 251 to pull the auxiliary molding arm 21 to rotate towards the body 10, and the second rod 252 pulls the rotating cylinder 255 to rotate accordingly. At this time, the auxiliary molding arm 21 is separated from the corner molding part 30. Since the second rod 252 is kept rotatably connected to the molding ring 13 through the rotating cylinder 255, it can be ensured that the auxiliary molding arm 21 will not completely detach from the molding ring 13 when the auxiliary molding arm 21 is separated, so that the auxiliary molding arm 21 can be reset and the next glass molding operation can be performed.

[0061] Please refer to the following: Figure 6 , Figure 6 for Figure 3 An enlarged view of region N is shown.

[0062] The adjusting part 23 includes two support rods 230, two sleeves 231, and a push rod 232. Each support rod 230 has a supporting end 2301. Each sleeve 231 is a cylinder with holes at both ends. A first locking plate 233 protrudes from the outer periphery of the sleeve 231, extending along the axial direction of the sleeve 231 and protruding from one end of the sleeve 231. The sleeve 231 also has a mounting groove, which is formed along the axial direction of the sleeve 231 in the cylinder wall and penetrates through the cylinder wall of the sleeve 231. The mounting groove faces away from the first locking plate 233. The push rod 232 is a cylindrical long rod with two second locking plates 234 protruding from its outer periphery. The two second locking plates 234 are arranged side by side and spaced apart along the axial direction of the push rod 232, and extend along the length direction of the push rod 232.

[0063] Two sleeves 231 are fixed to the first sub-arm 133 and spaced apart along the length of the first sub-arm 133. The axial direction of the two sleeves 231 is along the length of the first sub-arm 133, and the first locking plate 233 faces away from the first sub-arm 133. A push rod 232 is inserted into the two sleeves 231 along the axial direction of the sleeves 231. The second locking plate 234 slides through the mounting slot of the sleeve 231. The push rod 232 rotates 180 degrees so that the second locking plate 234 and the first locking plate 233 face the same direction. The second locking plate 234 and the first locking plate 233 abut against each other along the height direction of the forming ring 13. The inner diameter of the sleeve 231 is slightly larger than the diameter of the push rod 232, and the push rod 232 can move relative to the sleeve 231 along the axial direction of the sleeve 231. Two support rods 230 are fixed to the surface of the reinforcing plate 213 of the auxiliary molding arm 21 facing away from the molding plate 212; the abutting end 2301 of the support rod 230 abuts against the second locking plate 234, the second locking plate 234 supports the support rod 230, and then supports the auxiliary molding arm 21 through the support rod 230, so that the auxiliary molding arm 21 is supported on the outside of the second molding arm 132 (one side of the fixed molding part).

[0064] If the push rod 232 is pushed along the axial direction of the sleeve 231, the second locking plate 234 will move relative to the first locking plate 233 along the axial direction of the push rod 232, so that the second locking plate 234 disengages from the first locking plate 233, thereby unlocking the second locking plate 234 from the first locking plate 233, and causing the support rod 230 and the auxiliary forming arm 21 to lose support and move away from the moving forming part.

[0065] In other embodiments, the sleeve 231 is not provided with an installation through groove, and the second locking plate 234 is welded and fixed to the push rod 232 after the push rod 232 passes through the sleeve 231.

[0066] Please refer to the above as well. Figure 7 , Figure 7 for Figure 1 The diagram shows the structure of the corner molding part 30.

[0067] The corner forming part 30 is an elongated arc-shaped sheet, comprising two opposing surfaces, an arc-shaped forming surface 31, and a side surface 32. The arc-shaped forming surface 31 and the side surface 32 are the narrower sides of the corner forming part 30, connecting the two surfaces and being arranged opposite each other. The corner forming part 30 is bent from the arc-shaped forming surface 31 towards the side surface 32. The curvature of the arc-shaped forming surface 31 is adapted to the first forming arm 131, and the curvature of the arc-shaped forming surface 31 is smaller than that of the second sub-arm 134.

[0068] The corner molding part 30 is provided with a connecting hole 33 and a limiting piece 34, which are respectively located at opposite ends of the corner molding part 30 along its length. The limiting piece 34 extends from the end face of the corner molding part 30 and is close to the arc-shaped molding surface 31. The connecting hole 33 penetrates the two opposite surfaces along the height direction of the corner molding part 30.

[0069] The limiting pieces 34 of the two corner forming parts 30 corresponding to each auxiliary forming device 20 are detachably disposed in the slots 216 of the forming plate 212, and are used together with the auxiliary forming arm 21 to support and shape the corners of the glass.

[0070] Please refer to the above as well. Figure 8 , Figure 8 for Figure 1 The diagram shows a partial structural schematic of the glass hot bending mold 100 in its initial state.

[0071] When the glass hot bending mold 100 is in its initial state, the auxiliary forming device 20 is in a supported state, and the two auxiliary forming arms 21 are supported on the two second forming arms 132 of the forming ring 13 via the adjusting part 23. The limiting pieces 34 of the two corner forming parts 30 are connected to the slots 216 of one auxiliary forming arm 21. Specifically, the abutting end 2301 of the support rod 230 connected to the auxiliary forming arm 21 abuts against the second locking plate 234. The second locking plate 234 and the first locking plate 233 abut against each other along the height direction of the forming ring 13. The first locking plate 233 is fixed to the sleeve 231, and the sleeve 231 is fixed to the first sub-arm 133 of the second forming arm 132. The limiting pieces 34 of each pair of corner forming parts 30 can be separately disposed in the two slots 216 of the forming plate 212 of one auxiliary forming arm 21. The corner forming parts 30 are flush with or smoothly transitioned to the top of the auxiliary forming arm 21.

[0072] It is understood that, along the height direction of the glass hot bending mold, the height of the end of the corner forming component 30 connected to the forming ring 13 is less than the height of the end of the corner forming component 30 engaged with the auxiliary forming arm 21. Along the height direction of the glass hot bending mold, the arc-shaped forming surface 31 is higher than the arc-shaped top surface 1344, and the curvature of the arc-shaped forming surface 31 is less than the curvature of the arc-shaped top surface 1344. This allows the corners of the glass to be supported by the corner forming component 30 earlier, making it easier to form a spherical shape at the corners.

[0073] Please refer to the above as well. Figure 9 , Figure 9 for Figure 1 An enlarged view of region O shown.

[0074] When the auxiliary forming device 20 is in the supported state, the auxiliary forming surface 2123 of the forming plate 212 and the third surface of the first sub-arm 133 are arranged in the same direction and both face away from the base 11. The height of the auxiliary forming arm 21 in the height direction (Z-axis direction) of the glass hot bending mold 100 is higher than that of the second forming arm 132. Specifically, the height distance H between the forming plate 212 and the first sub-arm 133 is greater than or equal to 5 mm and less than or equal to 12 mm. The height distance H refers to the maximum straight-line distance from the auxiliary forming surface 2123 of the forming plate 212 to the third surface 1332 of the first sub-arm 133 along the height direction (Z-axis direction) of the glass hot bending mold 100. This can solve the problem of inverted spherical surfaces during glass forming.

[0075] Two auxiliary forming arms 21 are arranged opposite each other along the length direction (Z-axis direction) of the glass hot bending mold 100, and are both located outside the two second forming arms 132 of the forming ring 13. The first surface 2121 of the forming plate 212 is spaced apart from the second surface 1331 of the corresponding first sub-arm 133. Specifically, the length L of the forming plate 212 protruding from both ends of the first sub-arm 133 is greater than or equal to 5 mm and less than or equal to 15 mm, to prevent interference between the corner forming part 30 and the forming ring 13 when the corner forming part 30 separates from the auxiliary forming arms.

[0076] It is understood that the auxiliary forming arm 21 of the auxiliary forming device 20, which is in a supported state, is located outside the forming ring 13, and the corner forming component 30 is located on the surface of the second sub-arm 134 facing away from the forming ring 13. Therefore, the U-shaped support structure formed by the corner forming component 30 and the auxiliary forming arm 21 is located outside the second forming arm 132 and is higher than the second forming arm 132, so that the corner of the glass can be pre-formed on the auxiliary forming arm 21 and the corner forming component 30, so that the glass is bent to a certain curvature before falling into the forming ring 13 for secondary hot bending. In this application, the arrangement of the auxiliary forming device 20 and the corner forming component 30 is more conducive to the glass hot bending mold 100 supporting the glass corner in the early stage of glass hot bending, that is, the pre-forming stage, thereby reducing the amount of suspension at the glass corner and improving the glass forming quality. In addition, the curvature of the arc forming surface 31 of the corner forming component 30 is smaller than that of the forming surface 1313 of the second sub-arm 134. When the glass is heated, it will bend toward the base 11 due to gravity. During the glass preforming process, the curvature of the glass toward the base is small, and the corner forming parts 30 are easier to fit into the glass, thereby forming a support, which is beneficial to improving the forming quality of the glass.

[0077] Please see Figure 10 , Figure 10 for Figure 8 The diagram shows the structure of the glass hot bending mold 100 in its second state.

[0078] When the glass hot bending mold 100 is in the second state, the auxiliary forming device 20 is in the detached state, the two auxiliary forming arms 21 are removed from their original positions, that is, they move away from the first forming arm 131 and toward the base 11. At the same time, the corner forming part 30 loses the support of the auxiliary forming arms 21 and is removed from its original position.

[0079] Specifically, after pushing the push rod 232 along the axial direction of the sleeve 231, the second locking plate 234 will move relative to the first locking plate 233 along the axial direction of the push rod 232, causing the second locking plate 234 to disengage from the first locking plate 233 in the height direction of the forming ring 13, thus unlocking the second locking plate 234 from the first locking plate 233. The second locking plate 234 can no longer hold the support rod 230 and the auxiliary forming arm 21 fixedly connected to the support rod 230, thereby causing the auxiliary forming arm 21 to disengage from its original position and rotate toward the body 10. At this time, the forming plate 212 falls away from the second forming arm 132, and the forming plate 212 separates from the two corner forming parts 30; while the limiting pieces 34 of the two corner forming parts 30, having lost the support of the latch 216 on the forming plate 212, swing downward at a certain angle with the connecting post 136 as the axis and finally support themselves on the support post 135 of the second sub-arm 134. In this embodiment, the auxiliary molding arm 21 and the corner molding part 30 of the auxiliary molding device 20 separate during the detachment process, that is, the molding plate 212 and the corner molding part 30 will separate during the falling process and will not interfere with each other.

[0080] After the push rod 232 is pushed to make the auxiliary forming device 20 move from the supported state to the detached state, the counterweight 24 drives the forming part, that is, the first sub-arm 133 is raised, and the glass falls into the forming ring 13 composed of the first forming arm 131 and the second forming arm 132 to continue to bend and form towards the base 11, that is, enter the secondary forming stage. The arc-shaped top surface 1344 of the second forming arm 132 has a larger arc so that the corner of the glass reaches the required spherical surface.

[0081] It can be understood that in the existing technology, the corners of the windshield of a car are designed to be double-curved. During the glass forming process using a hot bending fixture, since the highest point of the glass corner is not in the middle of the corner, the corner supported by the forming ring will sag during the hot bending process, making it difficult to form a spherical surface and easy to curl upwards. In the production operation, it is necessary to manually control the appropriate force to continuously press the curled corner area of ​​the product. If the force is not controlled enough, there will still be a noticeable reverse spherical surface after pressing. This kind of glass, which relies on manual pressing and even has a reverse spherical surface, is prone to cracking during the subsequent pressing process.

[0082] In this application, the glass to be formed is in a flat state and is placed on the forming ring 13, the auxiliary forming device 20, and the corner forming component 30. Pre-forming is first performed by heating the glass. The glass softens upon heating and bends downwards due to its own weight and the support of the glass bending mold. The auxiliary forming arm 21 of the auxiliary forming device 20 and the corner forming component 30 support the ends and corners of the glass. Furthermore, the arc-shaped top surface 1344 and the arc-shaped forming surface 31 are not at the same height. During pre-forming, the arc-shaped forming surface 31 of the corner forming component 30 provides support. When the auxiliary forming arm 21 disengages from the moving forming part, the corner forming part 30 falls off along with the corner of the glass. The counterweight 24 drives the first sub-arm 133 to tilt up, and the arc-shaped top surface 1344 supports the corner of the glass. Since the curvature of the arc-shaped top surface 1344 is greater than the curvature of the arc-shaped forming surface 31 of the corner forming part 30, the secondary forming of the corner spherical surface is realized to achieve the required spherical surface, avoiding the situation of producing a reverse spherical surface as mentioned above. It also eliminates the need for manual pressing of the tilted corner area of ​​the product, thereby improving the accuracy and production efficiency of glass forming.

[0083] In this application, two corner forming parts 30 are movably connected to the forming plate 212. During the process of the auxiliary forming device 20 slipping, the forming plate 212 of the auxiliary forming arm 21 moves away from the first forming arm 131 toward the base 11; while the corner forming parts 30, after losing the support of the forming plate 212, will swing and fall around the support column 135. During the fall, the corner forming parts 30 will not touch the automotive glass being formed, thus avoiding the impact on the glass forming quality.

[0084] In summary, by adopting a split design, this application enables the corner molding part 30 and the molding plate 212 to separate and fall separately during detachment without interfering with each other, significantly reducing the possibility of the auxiliary molding device 20 touching the car glass during detachment and greatly improving the molding quality of the glass surface.

[0085] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A glass hot bending mold, wherein the glass hot-bent using the glass hot bending mold includes a width side and four corners, characterized in that, Includes forming rings, auxiliary forming devices, and corner forming parts; The auxiliary molding device includes an auxiliary molding arm, which is movably connected to the molding ring; One end of the corner forming component is hinged to the forming ring, and the other end is movably connected to the auxiliary forming arm. The corner forming component separates from the auxiliary forming arm when the auxiliary forming arm and the forming ring move relative to each other. When connected, the corner forming component and the auxiliary forming arm can provide support for the width sides and corners of the glass.

2. The glass hot bending mold according to claim 1, characterized in that, When the corner molding component is connected to the auxiliary molding arm, the top of the corner molding component is flush with or smoothly transitions to the top of the auxiliary molding arm.

3. The glass hot bending mold according to claim 1, characterized in that, Along the height direction of the glass hot bending mold, the height of the end of the corner forming part connected to the forming ring is less than the height of the end of the corner forming part that is engaged with the auxiliary forming arm.

4. The glass hot bending mold according to claim 1, characterized in that, The corner forming part includes an arc-shaped forming surface, and the forming ring includes an arc-shaped top surface. The arc-shaped forming surface and the arc-shaped top surface are arranged side by side along the width direction of the glass hot bending mold. With the corner forming part connected to the auxiliary forming arm, along the height direction of the glass hot bending mold, the arc forming surface is higher than the arc top surface, and the curvature of the arc forming surface is smaller than the curvature of the arc top surface.

5. The glass hot bending mold according to any one of claims 1-4, characterized in that, The auxiliary forming arm has a slot, and the corner forming part can be detachably set in the slot.

6. The glass hot bending mold according to claim 5, characterized in that, One end of the corner molding is provided with a limiting piece, and the corner molding is detachably mounted on the bayonet through the limiting piece.

7. The glass hot bending mold according to claim 5, characterized in that, The auxiliary molding device further includes an adjustment unit, which is used to control the connection or separation of the corner molding part from the auxiliary molding arm.

8. The glass hot bending mold according to claim 7, characterized in that, The adjusting part includes a support rod, a sleeve, and a push rod. A first locking plate protrudes from the outer periphery of the sleeve, and a second locking plate protrudes from the outer periphery of the push rod. The sleeve is fixed to the forming ring, the push rod is inserted into the sleeve along the axial direction of the sleeve, and the second locking plate abuts against the first locking plate along the height direction of the forming ring; One end of the support rod is connected to the auxiliary forming arm, and the other end abuts against the second locking plate, and the push rod can move along the axial direction of the sleeve.

9. The glass hot bending mold according to claim 7, characterized in that, The auxiliary molding device further includes a connector, one end of which is connected to the auxiliary molding arm and the other end is hinged to the molding ring. The connector is used to support the auxiliary molding arm when the adjustment part controls the movement of the auxiliary molding arm.

10. The glass hot bending mold according to claim 9, characterized in that, The auxiliary forming arm includes a forming plate and a reinforcing plate. The forming plate and the reinforcing plate are connected and spaced apart from each other. The connecting member includes a connecting frame and a connecting rod connected to the auxiliary forming arm. One end of the connecting rod is connected to the reinforcing plate, and the other end is rotatably connected to the connecting frame. The bayonet is located at the end of the forming plate along its length.

11. The glass hot bending mold according to any one of claims 1-4, characterized in that, The forming ring includes a fixed forming part and a movable forming part. The movable forming part is hinged to both ends of the fixed forming part. The corner forming part and the auxiliary forming arm are located outside the movable forming part. The corner forming part is located in the width direction of the glass hot bending mold and is rotatably connected to the movable forming part.

12. The glass hot bending mold according to claim 11, characterized in that, The fixed forming part includes two first forming arms, and the movable forming part includes two second forming arms. The two second forming arms are arranged opposite each other along the length direction of the forming ring. One second forming arm is movably connected to the ends of the two first forming arms on the same side, and the other second forming arm is movably connected to the other end of the two first forming arms. The auxiliary molding arm is movably connected to the side of the second molding arm facing away from the first molding arm; one end of the corner molding part is hinged to the end of the second molding arm that is connected to the first molding arm, and the other end is detachably connected to the auxiliary molding arm.

13. The glass hot bending mold according to claim 11, characterized in that, The forming ring includes a counterweight connected to the end of the movable forming part away from the fixed forming part. The counterweight can control the movable forming part to rotate relative to the end of the fixed forming part that is hinged to the movable forming part.

14. The glass hot bending mold according to claim 12, characterized in that, Along the height direction of the glass hot bending mold, the distance between the auxiliary forming arm and the second forming arm is greater than or equal to 5 mm and less than or equal to 12 mm.

15. The glass hot bending mold according to claim 12, characterized in that, Along the width direction of the glass hot bending mold, the length distance between the two ends of the auxiliary forming arm protruding from the second forming arm is greater than or equal to 5mm and less than or equal to 15mm.

16. The glass hot bending mold according to any one of claims 1-4, characterized in that, The glass also includes a length side, and the forming ring has curvature in the directions of the length side and the width side of the glass, respectively.

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