Glass forming device and glass forming method

Abstract

The invention discloses a glass forming device and a glass forming method. The glass forming device comprises an upper mold and a lower mold which are arranged up and down, and the upper mold and the lower mold can move up and down relative to each other; a conveying belt of the belt conveying mechanism is provided with an upper conveying section capable of conveying forwards; wherein the upper mold is located above the upper conveying section, the lower mold is located below the upper conveying section, the upper conveying section can convey to-be-formed glass to the forming position of the forming mold so that the upper mold can be matched with the lower mold to press the to-be-formed glass, and the upper conveying section can be matched with the molded surface of the to-be-formed glass in the pressing process of the forming mold. The arrangement of the upper conveying section is not limited by the size of the to-be-formed glass and the size of a forming mold of the to-be-formed glass, the to-be-formed glass can be prevented from generating roll marks, wrinkles and other marks in the conveying process, and conveying and positioning are more accurate; therefore, the goodness of fit between the to-be-formed glass and the forming mold in the pressing process and the forming quality after pressing forming are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of glass manufacturing, and in particular to a glass forming device and a glass forming method. Background Art

[0002] In the prior art, glass molding usually involves heating the glass to a softening temperature, feeding the glass into a molding device via a transmission roller, and then pressing and molding the glass through a mold to form the desired shape. However, for some glasses, especially those with special shapes or narrow and long shapes, the transmission rollers cannot be arranged, or the distance between the rollers is large, resulting in unstable transmission levels of the glass on the transmission rollers, inaccurate placement of the glass, and thus poor fit between the glass and the mold, poor surface finish after glass molding, or severe roller marks on the glass due to heavy local forces, resulting in poor glass optics and affecting the quality of the glass product. Summary of the invention

[0003] The object of the present invention is to provide a glass forming device and a glass forming method to solve the current technical problem that the quality of glass forming is easily affected by transferring the glass to be formed to a forming position through a transfer roller.

[0004] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0005] The present invention provides a glass forming device, comprising: a forming mold, comprising an upper mold and a lower mold arranged up and down, the upper mold and the lower mold can be arranged to be relatively movable in the height direction; a belt transmission mechanism, wherein the transmission belt has an upper transmission section that can transmit forward; wherein the upper mold is located above the upper transmission section, and the lower mold is located below the upper transmission section, the upper transmission section can transport the glass to be formed to the forming position of the forming mold so that the upper mold can cooperate with the lower mold to press the glass to be formed, and the upper transmission section can adapt to the surface of the glass to be formed during the pressing process of the forming mold.

[0006] In an embodiment of the present invention, the transmission belt utilizes its own elasticity to enable the upper transmission section to adaptively deform during the pressing process of the forming mold.

[0007] In an embodiment of the present invention, the transmission belt is made of stainless steel mold cloth.

[0008] In an embodiment of the present invention, the thickness of the stainless steel mold cloth is 0.8 mm to 1.5 mm, and the elasticity range of the stainless steel mold cloth is 4% to 50%.

[0009] In an embodiment of the present invention, two belt transmission roller structures are provided at the input end and the output end of the belt transmission mechanism; the transmission belt is an endless transmission belt, the endless transmission belt is wrapped around the two belt transmission roller structures, the two belt transmission structures drive the endless transmission belt for unidirectional circulation transmission through unidirectional rotation, the part of the endless transmission belt located above the two belt transmission structures constitutes the upper transmission section, the part of the endless transmission belt located below the two belt transmission structures constitutes the lower retreat section, and the lower mold is located between the upper transmission section and the lower retreat section; or the transmission belt is a sheet transmission belt, the two ends of the sheet transmission belt are wound around the two belt transmission roller structures, the two belt transmission structures drive the sheet transmission belt for bidirectional reciprocating transmission through bidirectional rotation, and the part of the sheet transmission belt located between the two belt transmission roller structures constitutes the upper transmission section.

[0010] In an embodiment of the present invention, the belt transmission mechanism also includes at least one tensioning adjustment structure, which includes a tensioning adjustment roller and a moving structure; the tensioning adjustment roller is pressed against the outer side of the transmission belt, and the moving structure can drive the tensioning adjustment roller to move toward the inner side of the transmission belt to increase the tension of the transmission belt, and move toward the outer side of the transmission belt to reduce the tension of the transmission belt; or the tensioning adjustment roller is pressed against the inner side of the transmission belt, and the moving structure can drive the tensioning adjustment roller to move toward the outer side of the transmission belt to increase the tension of the transmission belt, and move toward the inner side of the transmission belt to reduce the tension of the transmission belt.

[0011] In an embodiment of the present invention, the belt transmission roller structure includes an upper belt transmission roller and a lower belt transmission roller which are spaced apart from each other; the endless transmission belt passes around the upper belt transmission roller and the lower belt transmission roller of the two belt transmission roller structures; or the two ends of the sheet transmission belt are wound around the lower belt transmission roller of the two belt transmission roller structures and pass around the upper belt transmission roller of the two belt transmission roller structures; the tensioning adjustment roller of the tensioning adjustment structure is located between the upper belt transmission roller and the lower belt transmission roller.

[0012] In an embodiment of the present invention, the movable structure includes two telescopic cylinders, the movable ends of the two telescopic cylinders are connected to the two ends of the tensioning adjustment roller, and the glass forming device also includes a control structure, which can control the extension and retraction of the two telescopic cylinders.

[0013] In an embodiment of the present invention, the glass forming device further comprises a plurality of glass transmission rollers, and the plurality of glass transmission rollers are arranged at intervals between the glass heating zone and the upper transmission section of the belt transmission mechanism.

[0014] In an embodiment of the present invention, the upper mold is provided with a vacuum adsorption structure, which can adsorb and adhere the pressed glass to the upper mold through vacuum suction force; and the glass forming device also includes a forming ring, which can move between the upper mold and the upper transmission section to receive the pressed glass.

[0015] The present invention also provides a glass forming method, comprising the following steps: the upper transmission section of the transmission belt transmits the glass to be formed to the forming position of the forming mold; the upper mold of the forming mold descends from above the upper transmission section, and / or the lower mold of the forming mold rises from below the upper transmission section, and the glass to be formed on the upper transmission section is pressed, and the upper transmission section is adapted to the surface of the glass to be formed during the pressing process of the forming mold; until the glass to be formed is pressed to form a preset surface.

[0016] In an embodiment of the present invention, before the upper transmission section transmits the glass to be formed to the forming position of the forming mold, it also includes: preheating the glass to be formed to its softening temperature in the glass heating zone; the upper transmission section transmits the glass to be formed to the forming position of the forming mold, including the following steps: the upper transmission section cooperates with a plurality of glass transmission rollers to transmit the glass to be formed forward from the outlet of the glass heating zone at a first transmission speed until the glass to be formed is separated from the glass transmission rollers and transmitted to the starting position of the upper transmission section; wherein the first transmission speed is 800mm / s to 1500mm / s; the upper transmission section transmits the glass to be formed from the starting position to the forming position of the forming mold at a second transmission speed; wherein the second transmission speed is 150mm / s to 300mm / s.

[0017] In an embodiment of the present invention, before the glass to be formed reaches the upper transmission section, the process further includes: increasing the tension of the transmission belt so that the upper transmission section can support the glass to be formed flat.

[0018] In an embodiment of the present invention, during the pressing process of the forming mold, the method further includes: reducing the tension of the transmission belt so that the upper transmission section can be adaptively deformed during the pressing process of the forming mold.

[0019] In an embodiment of the present invention, during the pressing process of the forming mold, the method further includes: reducing the tension of the upper transmission section so that the upper transmission section can be adaptively deformed during the pressing process of the forming mold.

[0020] The characteristics and advantages of the present invention are:

[0021] The glass forming device and glass forming method of the present invention transmit the glass to be formed to the forming position between the upper mold and the lower mold through the upper transmission section of the transmission belt, and then press the upper transmission section and the glass to be formed by the upper mold and the lower mold approaching each other in the height direction. Since the upper transmission section can adapt to the molding surface of the glass to be formed and will not limit the pressing and molding of the glass to be formed, the glass to be formed can be pressed into a preset molding surface by the molding mold. Compared with the transmission roller of the prior art for transmitting the glass to be formed, the arrangement of the upper transmission section in the present invention is not limited by the size of the glass to be formed and its molding mold, and the use of the flat upper transmission section can avoid the glass to be formed from roller marks, wrinkles and other marks during the transmission process, and the transmission positioning is more accurate, which is beneficial to improve the fit between the glass to be formed and the molding mold during the pressing process and the molding quality after pressing and molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 Schematic diagram of the structure of a glass forming device in one embodiment of the present invention.

[0024] Figure 2 Schematic diagram of the structure of a glass forming device during a pressing process in one embodiment of the present invention.

[0025] Figure 3 It is a schematic structural diagram of a glass forming device in another embodiment of the present invention.

[0026] Figure 4 FIG. 1 is a schematic structural diagram of a glass forming device during a pressing process in another embodiment of the present invention.

[0027] Figure 5 It is a three-dimensional schematic diagram of a glass forming device in one embodiment of the present invention.

[0028] Figure 6 It is a three-dimensional schematic diagram of a glass forming device in another embodiment of the present invention.

[0029] Figure 7 FIG. 4 is a schematic structural diagram of a glass forming device in yet another embodiment of the present invention.

[0030] In the figure:

[0031] 1. Molding mold; 11. Upper mold; 12. Lower mold; 13. Lower lifting structure; 131. Base; 132. Lifting member; 133. Connecting beam;

[0032] 2. Belt transmission mechanism; 21. Transmission belt; 211. Upper transmission section; 212. Lower retraction section; 22. Belt transmission roller structure; 221. Upper belt transmission roller; 222. Lower belt transmission roller;

[0033] 3. Tension adjustment structure; 31. Tension adjustment roller; 32. Moving structure; 321. Telescopic cylinder; 322. Mounting frame; 323. Pipeline structure; 324. Pressure regulating valve; 325. Solenoid valve;

[0034] 4. Control structure;

[0035] 5. Glass transmission roller;

[0036] 6. Glass to be formed;

[0037] 7. Glass heating zone; 71. Ceramic heating transmission roller; 72. Exit. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Implementation Method 1

[0040] like Figure 1 and Figure 2 As shown, the present invention provides a glass forming device, comprising: a forming mold 1, comprising an upper mold 11 and a lower mold 12 arranged up and down, and the upper mold 11 and the lower mold 12 can be arranged to move up and down relative to each other; a belt transmission mechanism 2, whose transmission belt 21 has an upper transmission section 211 that can transmit forward; wherein, the upper mold 11 is located above the upper transmission section 211, and the lower mold 12 is located below the upper transmission section 211, and the upper transmission section 211 can transport the glass 6 to be formed to the forming position of the forming mold 1 so that the upper mold 11 can cooperate with the lower mold 12 to press the glass 6 to be formed, and the upper transmission section 211 can adapt to the surface of the glass 6 to be formed during the pressing process of the forming mold 1.

[0041] For the convenience of description, the present invention defines the forward transmission direction S as moving backward from the input end of the belt transmission mechanism 2 toward the output end thereof.

[0042] The glass forming device of the present invention transmits the glass 6 to be formed to the forming position between the upper mold 11 and the lower mold 12 through the upper transmission section 211 of the transmission belt 21, and then presses the upper transmission section 211 and the glass 6 to be formed by the upper mold 11 and the lower mold 12 approaching each other in the height direction. Since the profile of the upper transmission section 211 can adapt to the profile of the glass 6 to be formed and will not limit the pressing and forming of the glass 6 to be formed, the glass 6 to be formed can be pressed into a preset profile by the forming mold 1. Compared with the transmission roller of the prior art that transmits the glass 6 to the forming position, the arrangement of the upper transmission section 211 in the present invention is not limited by the size of the glass 6 to be formed and its forming mold 1, and the flat upper transmission section 211 can avoid the glass 6 to be formed from roller marks, wrinkles and other marks during the transmission process, and the transmission positioning is more accurate, which is beneficial to improve the fit between the glass 6 to be formed and the forming mold 1 during the pressing process and the molding quality after pressing and forming.

[0043] Specifically, the glass forming device is installed in the glass forming area. The upper mold 11 can be raised and lowered, and / or the lower mold 12 can be raised and lowered. When the formed glass 6 reaches the forming position, Figure 2 and Figure 4 As shown, by lowering the upper mold 11 and / or raising the lower mold 12, the upper mold 11 and the lower mold 12 are brought closer to each other to press the upper transmission section 211 and the glass to be formed 6. The shapes of the lower surface of the upper mold 11 and the upper surface of the lower mold 12 are not specifically limited, as long as the lower surface of the upper mold 11 and the upper surface of the lower mold 12 can cooperate to form a preset profile required for pressing the glass to be formed 6. In some embodiments of the present invention, the upper mold 11 is a convex mold and the lower mold 12 is a concave mold. Figure 1 and Figure 2 As shown, the upper mold 11 is installed on the top of the glass forming area through an upper lifting structure; and / or as Figures 3 to 6 As shown, the lower mold 12 is installed at the bottom of the glass forming area through a lower lifting structure 13. The lower lifting structure 13 includes a base 131 and a plurality of lifting members 132 installed on the base 131. The plurality of lifting members 132 are connected to the lower mold 12 through a plurality of connecting beams 133. In other embodiments of the present invention, the upper mold 11 is a concave mold and the lower mold 12 is a convex mold.

[0044] like Figure 2 and Figure 4As shown, in an embodiment of the present invention, the glass 6 to be formed is pressed to form a curved glass by the cooperation of a male mold and a female mold. The specific structures of the male mold and the female mold can be the same as those in the prior art and will not be repeated here. In order to ensure that the formed curved glass has a better forming quality, the glass forming device of the present invention is preferably used to manufacture curved glass with a thickness of 1.6 mm to 3.2 mm, an arch height of less than 20 mm, and a spherical size of less than 10 mm. The contour shape of the curved glass is not specifically limited, and can be a regular shape such as a rectangle, a triangle, or an irregular shape.

[0045] In addition, the upper mold 11 is provided with a vacuum adsorption structure, which can adsorb the pressed glass to the upper mold 11 through vacuum suction force, thereby further improving the molding quality of the glass. The glass molding device also includes a molding ring, which can move between the upper mold 11 and the upper transmission section 211 to receive the pressed glass, and the molding ring can drive the pressed glass to the next processing area (such as an annealing area or a cooling area) for the next processing. The specific structure and working principle of the vacuum adsorption structure are the same as those of the vacuum adsorption structure in the prior art, and will not be repeated here. The molding ring can be horizontally movably arranged on the side of the belt transmission mechanism 2 through a horizontal moving structure 32. After the glass is pressed and formed, the upper mold 11 absorbs the pressed and formed glass through the vacuum adsorption structure, and by raising the upper mold 11 and / or lowering the lower mold 12, a certain space is created between the upper mold 11 and the upper conveyor belt, and then the molding ring is horizontally moved from the side of the belt transmission mechanism 2 to between the upper mold 11 and the upper transmission section 211, and then the upper mold 11 is lowered or the molding ring is raised to place the pressed and formed glass on the molding ring.

[0046] like Figures 1 to 7 As shown, in the embodiment of the present invention, two belt transmission roller structures 22 are provided at the input end and the output end of the belt transmission mechanism 2, and the transmission belt 21 is driven to transmit by the rotation of the two belt transmission roller structures 22. Specifically, each belt transmission roller structure 22 includes at least one rotatable belt transmission roller, and the number of belt transmission rollers of each belt transmission roller structure 22 can be only one, or multiple, such as two, three or more, and the multiple belt transmission rollers can be arranged at intervals up and down, or can be arranged at intervals along the conveying direction. In addition, the belt transmission mechanism 2 is also provided with a transmission roller driving structure for driving the belt transmission roller to rotate. The specific structure and working principle of the transmission roller driving structure are the same as those in the prior art, and will not be repeated here. The belt transmission mechanism 2 is also provided with a transmission positioning structure, and the specific structure and working principle of the transmission positioning structure of the belt transmission mechanism 2 in the prior art are the same, and will not be repeated here.

[0047] like Figure 1 and Figure 5As shown, in some embodiments of the present invention, the transmission belt 21 is an endless transmission belt, which is wrapped around the two belt transmission roller structures 22. The two belt transmission structures drive the endless transmission belt 21 to unidirectionally circulate through unidirectional rotation. The part of the endless transmission belt 21 that is transmitted to the upper part of the two belt transmission structures constitutes the upper transmission section 211, and the part of the endless transmission belt 21 that is transmitted to the lower part of the two belt transmission structures constitutes the lower retracting section 212; the lower mold 12 is located between the upper transmission section 211 and the lower retracting section 212. Figure 1 As shown, the rear belt transmission roller structure 22 and the front belt transmission roller structure 22 both rotate in a clockwise direction, thereby driving the endless transmission belt 21 to circulate in a clockwise direction.

[0048] like Figure 3 and Figure 6 As shown, in some other embodiments of the present invention, the upper transmission section 211 is a sheet-like transmission belt 21, and the two ends of the sheet-like transmission belt 21 are wound on two belt transmission roller structures 22. The two belt transmission roller structures 22 drive the sheet-like transmission belt 21 to reciprocate in both directions through bidirectional rotation. The portion of the sheet-like transmission belt 21 transmitted to between the two belt transmission roller structures 22 constitutes the upper transmission section 211. The transmission direction of the transmission belt 21 can be controlled by controlling the rotation direction of the two belt transmission roller structures 22, so that the upper transmission section 211 can drive the glass 6 to be formed to be transmitted forward to the forming position for pressing, and can also retreat backward to the starting position after the pressing is completed. Figure 1 As shown, the rear belt transmission roller structure 22 and the front belt transmission roller structure 22 both rotate in the clockwise direction, the rear belt transmission roller structure 22 unfolds its wound sheet transmission belt 21, and the front belt transmission roller structure 22 retracts the sheet transmission belt 21, thereby driving the sheet transmission belt 21 to be transmitted forward; the rear belt transmission roller structure 22 and the front belt transmission roller structure 22 both rotate in the counterclockwise direction, the rear belt transmission roller structure 22 retracts the sheet transmission belt 21, and the front belt transmission roller structure 22 unfolds its wound sheet transmission belt 21, thereby driving the sheet transmission belt 21 to retreat backward.

[0049] like Figures 1 to 4As shown, in order to ensure that the upper transmission section 211 does not mark the glass 6 to be formed, the flatness of the upper surface of the upper transmission section 211 should be ensured, and at the same time, a certain friction should be ensured between the upper transmission section 211 and the glass 6 to be formed to prevent the glass 6 to be formed from slipping on the upper transmission section 211. In order to improve the fit between the glass 6 to be formed and the forming mold 1, the thickness of the upper transmission section 211 should be avoided to be too large, and at the same time, the thickness of the upper transmission section 211 should be avoided to be too small and not have sufficient strength to support the glass 6 to be formed, which is easy to break. In addition, the glass 6 to be formed needs to be preheated to its softening temperature, such as 500°C to 750°C, in the glass heating zone 7 before press molding. Therefore, the upper transmission section 211 also needs to have the ability to withstand high temperatures.

[0050] Based on the above description, it can be known that any part of the endless transmission belt 21 can be transmitted to the top of the two belt transmission roller structures 22 to form an upper transmission section 211, and except for the parts close to the two ends, the other parts of the sheet transmission belt 21 may be transmitted between the two belt transmission roller structures 22 to form the upper transmission section 211. Therefore, in order to ensure that the upper transmission section 211 formed by the transmission belt 21 can meet the conditions specified in the previous paragraph, in the embodiment of the present invention, the transmission belt 21 as a whole meets the specified conditions of the upper transmission section 211 in the previous paragraph.

[0051] like Figure 2 and Figure 4 As shown, in order to make the upper transmission section 211 adapt to the profile of the glass 6 to be formed during the pressing process of the forming mold 1, after the pressing is completed, the upper surface of the upper transmission section 211 is completely in contact with the lower surface of the glass 6 to be formed, the lower surface of the upper transmission section 211 is completely in contact with the upper surface of the lower mold 12, and the upper surface of the glass 6 to be formed is completely in contact with the lower surface of the upper mold 11, so that the glass 6 to be formed is pressed to form a preset profile. In some embodiments of the present invention, the transmission belt 21 uses its own elasticity to make the upper transmission section 211 adaptively deform during the pressing process of the forming mold 1. Specifically, the transmission belt 21 includes but is not limited to being made of stainless steel mold cloth. Due to the different thickness of the stainless steel mold cloth, the required elasticity is also different accordingly. In this embodiment, the thickness of the stainless steel mold cloth is 0.8mm to 1.5mm, and the elasticity range of the stainless steel mold cloth is 4% to 50%. If the elasticity is too small and the pressing force is large, it is easy to cause permanent deformation of the transmission belt 21, resulting in reduced accuracy of transmission positioning. In addition, the transmission belt 21 is easy to wrinkle during molding, resulting in poor appearance of the glass 6 to be molded after pressing. Therefore, the elasticity range of the stainless steel mold cloth is preferably 15% to 30%.

[0052] like Figures 1 to 6As shown, in an embodiment of the present invention, the belt transmission mechanism 2 also includes at least one tensioning adjustment structure 3, and the tensioning adjustment structure 3 includes a tensioning adjustment roller 31 and a moving structure 32; the tensioning adjustment roller 31 is pressed against the outer side of the transmission belt 21, and the moving structure 32 can drive the tensioning adjustment roller 31 to move toward the inner side of the transmission belt 21 to increase the tension of the transmission belt 21 and move toward the outer side away from the transmission belt 21 to reduce the tension of the transmission belt 21; or the tensioning adjustment roller 31 is pressed against the inner side of the transmission belt 21, and the moving structure 32 can drive the tensioning adjustment roller 31 to move toward the outer side of the transmission belt 21 to increase the tension of the transmission belt 21 and move toward the inner side away from the transmission belt 21 to reduce the tension of the transmission belt 21.

[0053] Since the degree to which the transmission belt 21 can be elastically deformed is related to the tension of the transmission belt 21, the greater the tension of the transmission belt 21, the less likely the transmission belt 21 is to be elastically deformed by external forces such as the weight of the glass 6 to be formed and the pressing force of the forming mold 1, and vice versa, the smaller the tension of the transmission belt 21, the easier it is for the transmission belt 21 to be elastically deformed by external forces such as the weight of the glass 6 to be formed and the pressing force of the forming mold 1. Therefore, by providing the tension adjustment structure 3, the tension of the transmission belt 21 can be increased before the transmission belt 21 transmits the glass 6 to be formed, so that the transmission belt 21 can maintain a straight state during the transmission process to support the glass 6 to be formed without deformation; and by reducing the tension of the transmission belt 21 during the pressing process, the transmission belt 21 can fully utilize its own elasticity to deform adaptively.

[0054] Specifically, the mobile structure 32 includes two telescopic cylinders 321, and the movable ends of the two telescopic cylinders 321 are connected to the two ends of the tensioning roller 31. The glass forming device also includes a control structure 4, and the control structure 4 can control the extension and retraction of the two telescopic cylinders 321. The mobile structure 32 also includes a mounting frame 322 for mounting the two telescopic cylinders 321, and the mounting frame 322 is fixed at the bottom of the glass forming area.

[0055] like Figures 1 to 4As shown, in some embodiments of the present invention, the two telescopic cylinders 321 are connected to the pressure source through a pipeline structure 323. The telescopic cylinder 321 is a pneumatic cylinder, the pressure source is an air source, and the pipeline structure 323 includes two air supply pipelines independently arranged from each other. The two telescopic cylinders 321 are connected to the air source through the two air supply pipelines. A solenoid valve 325 and a pressure regulating valve 324 are arranged on each air supply pipeline, and the pressure regulating valve 324 is located between the solenoid valve 325 and the telescopic cylinder 321. The control structure 4 is electrically connected to each solenoid valve 325 and each pressure regulating valve 324, respectively. The control structure 4 can be integrated into a computer. The control structure 4 controls the opening and closing of each solenoid valve 325 to control the connection and disconnection between the two air supply pipelines and the air source; the control structure 4 controls the opening degree of each pressure regulating valve 324 to adjust the pressure of the two telescopic cylinders 321. In other embodiments of the present invention, the telescopic cylinder 321 is an oil cylinder, and the pressure source is a hydraulic source. As shown in FIG. Figure 5 and Figure 6 As shown, in some other embodiments of the present invention, the telescopic cylinder 321 is an electric cylinder, which is directly electrically connected to the control structure 4, and the telescopic cylinder is controlled by controlling the power supply of the electric cylinder through the control structure 4. In addition, the control structure 4 can also be electrically connected to the transmission positioning structure and the belt transmission roller driving structure of the belt transmission mechanism 2 respectively to control the start and stop and transmission speed of the belt transmission mechanism 2.

[0056] like Figures 1 to 6 As shown, in the embodiment of the present invention, the belt transmission roller structure 22 includes an upper belt transmission roller 221 and a lower belt transmission roller 222 spaced apart from each other; the endless transmission belt 21 passes around the upper belt transmission roller 221 and the lower belt transmission roller 222 of the two belt transmission roller structures 22; or the two ends of the sheet transmission belt 21 are wound around the lower belt transmission roller 222 of the two belt transmission roller structures 22 and pass around the upper belt transmission roller 221 of the two belt transmission roller structures 22; the tension adjustment roller 31 of the tension adjustment structure 3 is located between the upper belt transmission roller 221 and the lower belt transmission roller 222. Figures 1 to 6 As shown, in some embodiments of the present invention, only one tension adjustment structure 3 is provided. Figure 7 As shown, in another embodiment of the present invention, in order to make the transmission belt 21 evenly stressed, two tension adjustment structures 3 are provided, and the tension adjustment rollers 31 of the two tension adjustment structures 3 are located between the upper belt transmission roller 221 and the lower belt transmission roller 222 of the two belt transmission roller structures 22. Of course, three or more tension adjustment structures 3 can also be provided.

[0057] In addition, if Figures 1 to 6As shown, in order to facilitate the transfer of the preheated glass to be formed 6 from the glass heating zone 7 to the upper transfer section 211, in some embodiments of the present invention, the glass forming device further comprises a plurality of glass transfer rollers 5, and the plurality of glass transfer rollers 5 are arranged at intervals between the glass heating zone 7 and the upper transfer section 211 of the belt transfer mechanism 2. The preheated glass to be formed 6 is output forward from the glass heating zone 7 to the plurality of glass transfer rollers 5, and the preheated glass to be formed 6 is transferred forward to the upper transfer section 211 by the plurality of glass transfer rollers 5, and the glass transfer rollers 5 cooperate with the upper transfer section 211, so that the glass to be formed 6 can be fully transferred to the upper transfer section 211 and separated from the glass transfer rollers 5.

[0058] Specifically, the upper transmission section 211 cooperates with a plurality of glass transmission rollers 5 to transmit the glass 6 to be formed from the exit 72 of the glass heating zone 7 at a transmission speed of 800 mm / s to 1500 mm / s, until the glass 6 to be formed is separated from the glass transmission rollers 5 and transmitted to the starting position of the upper transmission section 211, so as to avoid the glass 6 to be formed being in contact with the glass transmission rollers 5 for a long time and easily leaving roller marks. The upper transmission section 211 transmits the glass 6 to be formed from the starting position of the upper transmission section 211 to the forming position of the forming mold 1 at a transmission speed of 150 mm / s to 300 mm / s, so as to prevent the glass 6 to be formed from slipping due to excessive transmission speed.

[0059] like Figures 1 to 6 As shown, a plurality of ceramic heating transmission rollers 71 are arranged at intervals along the transmission direction in the glass heating zone 7, and the glass 6 to be formed is transmitted in the glass heating zone 7 by the plurality of ceramic heating transmission rollers 71, and the glass 6 to be formed is preheated to its softening temperature during the transmission process, and then the glass 6 to be formed is transmitted from the outlet 72 of the glass heating zone 7 to the glass transmission roller 5. In addition, the outlet 72 of the glass heating zone 7 is provided with a position detection structure, such as an electric eye sensor, and the control structure 4 is also electrically connected to the position detection structure, so that the glass forming device can be controlled to work according to the detection signal of the position detection structure. Of course, if the layout space allows, the input end of the belt transmission mechanism 2 can also be directly close to the outlet 72 of the glass heating zone 7, and the preheated glass 6 to be formed can be directly transmitted to the starting position of the upper transmission section 211 by the plurality of ceramic heating transmission rollers 71 directly cooperating with the upper transmission section 211.

[0060] Combination Figures 1 to 6 As shown, in the embodiment of the present invention, the working process of the glass forming device is as follows:

[0061] The glass to be formed 6 is transmitted from the glass heating zone 7 to the exit 72 of the glass heating zone 7 via the ceramic heating transmission roller 71, so that the position detection structure can sense the position signal of the glass to be formed 6 and feed it back to the control structure 4, and the control structure 4 controls the moving structure 32 to drive the tensioning adjustment roller 31 to squeeze the transmission belt 21 to increase the tension of the transmission belt 21, so that the upper transmission section 211 is tightened and the glass to be formed 6 is transmitted to the forming position, and then the upper mold 11 is lowered and / or the lower mold 12 is raised, and then .... The tightening adjustment roller 31 loosens the transmission belt 21 to reduce the tension of the transmission belt 21, the upper mold 11 descends and / or the lower mold 12 rises to press the upper transmission section 211 together with the glass 6 to be formed, and then the upper mold 11 absorbs the pressed glass through the vacuum adsorption structure, the upper mold 11 is raised and / or the lower mold 12 is lowered to separate the upper transmission section 211 from the upper mold 11 and the lower mold 12, and then the control module controls the tensioning adjustment structure 3 to re-tighten the transmission belt 21, and this is repeated to achieve the pressing and forming of multiple pieces of glass 6 to be formed in sequence.

[0062] In other embodiments of the present invention, during the pressing process of the forming mold 1, the shape of the upper transmission section 211 can be adapted to the shape of the glass 6 to be formed by increasing the length of the upper transmission section 211. Specifically, the transmission belt 21 is a sheet-like transmission belt 21, and both ends of the sheet-like transmission belt 21 are wound on two belt transmission roller structures 22. During the pressing process of the forming mold 1, the rear belt transmission roller structure 22 rotates in a clockwise direction to gradually unfold the wound sheet-like transmission belt 21, and the front belt transmission roller structure 22 rotates in a counterclockwise direction to gradually unfold the wound sheet-like transmission belt 21, so that the upper transmission section 211 of the sheet-like transmission belt 21 located between the two belt transmission roller structures 22 gradually increases, so as to be adapted to the shape of the glass 6 to be formed. After the pressing is completed, the rear belt transmission roller structure 22 rotates counterclockwise to retract the sheet transmission belt 21, so that the upper transmission section 211 of the sheet transmission belt 21 located between the two belt transmission roller structures 22 is shortened to a level close to the horizontal spacing between the two belt transmission roller structures 22, and the portion of the sheet transmission belt 21 located between the two belt transmission roller structures 22 is straight, so as to facilitate the transmission of the next glass 6 to be formed.

[0063] Implementation Method 2

[0064] The present invention also provides a glass forming method. Since the principle of solving the problem by the glass forming method is similar to that of the glass forming device in the first embodiment, the implementation of the method can refer to the implementation of the glass forming device in the first embodiment, and the repeated parts will not be repeated.

[0065] The glass forming method of the present invention comprises the following steps: the upper transmission section 211 of the transmission belt 21 transmits the glass 6 to be formed to the forming position of the forming mold 1; the upper mold 11 of the forming mold 1 descends from above the upper transmission section 211, and / or the lower mold 12 of the forming mold 1 rises from below the upper transmission section 211, and the glass 6 to be formed on the upper transmission section 211 is pressed, and the upper transmission section 211 is adapted to the profile of the glass 6 to be formed during the pressing process of the forming mold 1; until the glass 6 to be formed is pressed to form a preset profile.

[0066] In an embodiment of the present invention, before the upper transmission section 211 transmits the glass to be formed 6 to the forming position of the forming mold 1, it also includes: preheating the glass to be formed 6 to its softening temperature in the glass heating zone 7; the upper transmission section 211 transmits the glass to be formed 6 to the forming position of the forming mold 1, including the following steps: the upper transmission section 211 cooperates with a plurality of glass transmission rollers 5 to transmit the glass to be formed 6 forward from the outlet 72 of the glass heating zone 7 at a first transmission speed until the glass to be formed 6 is separated from the glass transmission rollers 5 and transmitted to the starting position of the upper transmission section 211; wherein the first transmission speed is 800mm / s to 1500mm / s; the upper transmission section 211 transmits the glass to be formed 6 from the starting position to the forming position of the forming mold 1 at a second transmission speed; wherein the second transmission speed is 150mm / s to 300mm / s.

[0067] In an embodiment of the present invention, before the glass to be formed 6 reaches the upper transmission section 211 , the process further includes: increasing the tension of the transmission belt 21 , so that the upper transmission section 211 can support the glass to be formed 6 to be flat.

[0068] In an embodiment of the present invention, during the pressing process of the forming mold 1 , the method further includes: reducing the tension of the transmission belt 21 , so that the upper transmission section 211 is adaptively deformed during the pressing process of the forming mold 1 .

[0069] The above are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A glass forming device, characterized in that: include: The molding die comprises an upper die and a lower die arranged up and down, wherein the upper die and the lower die are arranged to be relatively movable in a height direction; A belt transmission mechanism, wherein the transmission belt has an upper transmission section capable of transmitting forward; Among them, the upper mold is located above the upper transmission section, and the lower mold is located below the upper transmission section. The upper transmission section can transport the glass to be formed to the forming position of the forming mold so that the upper mold can cooperate with the lower mold to press the glass to be formed, and the upper transmission section can adapt to the surface of the glass to be formed during the pressing process of the forming mold.

2. The glass forming device according to claim 1, characterized in that: The transmission belt utilizes its own elasticity to make the upper transmission section adaptively deform during the pressing process of the forming mold.

3. The glass forming device according to claim 2, characterized in that: The transmission belt is made of stainless steel mold cloth.

4. The glass forming device according to claim 3, characterized in that: The thickness of the stainless steel mold cloth is 0.8 mm to 1.5 mm, and the elasticity range of the stainless steel mold cloth is 4% to 50%.

5. The glass forming device according to any one of claims 1 to 4, characterized in that: The input end and the output end of the belt transmission mechanism are provided with two belt transmission roller structures; The transmission belt is an endless transmission belt, which is wrapped around the two belt transmission roller structures. The two belt transmission structures drive the endless transmission belt to unidirectionally circulate through unidirectional rotation. The portion of the endless transmission belt that is transmitted to the upper side of the two belt transmission structures constitutes the upper transmission section, and the portion of the endless transmission belt that is transmitted to the lower side of the two belt transmission structures constitutes the lower retreat section. The lower mold is located between the upper transmission section and the lower retreat section; or The transmission belt is a sheet-like transmission belt, and both ends of the sheet-like transmission belt are wound on two belt transmission roller structures. The two belt transmission structures drive the sheet-like transmission belt to reciprocate in both directions through bidirectional rotation. The part of the sheet-like transmission belt transmitted to between the two belt transmission roller structures constitutes the upper transmission section.

6. The glass forming device according to claim 5, characterized in that: The belt transmission mechanism further comprises at least one tensioning adjustment structure, wherein the tensioning adjustment structure comprises a tensioning adjustment roller and a moving structure; The tensioning roller is pressed against the outer side of the transmission belt, and the moving structure can drive the tensioning roller to move toward the inner side of the transmission belt to increase the tension of the transmission belt and move toward the outer side of the transmission belt to reduce the tension of the transmission belt; or The tensioning roller is pressed against the inner side of the transmission belt, and the moving structure can drive the tensioning roller to move toward the outer side of the transmission belt to increase the tension of the transmission belt and move toward the inner side of the transmission belt to reduce the tension of the transmission belt.

7. The glass forming device according to claim 6, characterized in that: The belt transmission roller structure comprises an upper belt transmission roller and a lower belt transmission roller spaced apart from each other; the endless transmission belt passes around the upper belt transmission roller and the lower belt transmission roller of the two belt transmission roller structures; or the two ends of the sheet transmission belt are wound around the lower belt transmission rollers of the two belt transmission roller structures and pass around the upper belt transmission rollers of the two belt transmission roller structures; The tension adjustment roller of the tension adjustment structure is located between the upper belt transmission roller and the lower belt transmission roller.

8. The glass forming device according to claim 6, characterized in that: The moving structure includes two telescopic cylinders, the movable ends of the two telescopic cylinders are connected to the two ends of the tensioning and adjusting roller, and the glass forming device also includes a control structure, which can control the extension and retraction of the two telescopic cylinders.

9. The glass forming device according to claim 1, characterized in that: The glass forming device further comprises a plurality of glass conveying rollers, which are arranged at intervals between the glass heating zone and the upper conveying section of the belt conveying mechanism.

10. The glass forming device according to claim 1, wherein: The upper mold is provided with a vacuum adsorption structure, which can adsorb and adhere the pressed glass to the upper mold through vacuum suction force; and the glass forming device also includes a forming ring, which can move between the upper mold and the upper transmission section to receive the pressed glass.

11. A glass forming method, characterized in that: The following steps are involved: The upper transmission section of the transmission belt transmits the glass to be formed to the forming position of the forming mold; The upper mold of the forming mold descends from above the upper transmission section, and / or the lower mold of the forming mold rises from below the upper transmission section, so as to press the glass to be formed on the upper transmission section, and make the upper transmission section adapt to the profile of the glass to be formed during the pressing process of the forming mold; Until the glass to be formed is pressed to form a preset profile.

12. The glass forming method according to claim 11, wherein: Before the upper transmission section transmits the glass to be formed to the forming position of the forming mold, the method further includes: preheating the glass to be formed to its softening temperature in the glass heating zone; The upper transmission section transmits the glass to be formed to the forming position of the forming mold, including the following steps: The upper transmission section cooperates with a plurality of glass transmission rollers to transmit the glass to be formed forward from the exit of the glass heating zone at a first transmission speed until the glass to be formed is separated from the glass transmission rollers and transmitted to the starting position of the upper transmission section; wherein the first transmission speed is 800 mm / s to 1500 mm / s; The upper transmission section transmits the glass to be formed from the starting position to the forming position of the forming mold at a second transmission speed; wherein the second transmission speed is 150 mm / s to 300 mm / s.

13. The glass forming method according to claim 11, wherein: Before the glass to be formed reaches the upper transmission section, the method further includes: increasing the tension of the transmission belt so that the upper transmission section can support the glass to be formed flat.

14. The glass forming method according to claim 11, wherein: During the pressing process of the forming mold, the method further includes: reducing the tension of the transmission belt so that the upper transmission section can be adaptively deformed during the pressing process of the forming mold.

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