A glass toughening furnace and a toughening method

Abstract

The application relates to the technical field of toughened glass processing, in particular to a glass toughening furnace and a toughening method, which comprise a toughening furnace and an automatic feeding platform; the automatic feeding platform is arranged in connection with the feeding inlet of the toughening furnace, the automatic feeding platform automatically feeds the toughening furnace, the automatic feeding platform comprises a flat feeding machine and a conveyor, the flat feeding machine arranges glass in a flat manner, and the conveyor conveys the glass arranged in a flat manner into the toughening furnace; on the basis of the technical scheme of the existing toughening furnace, the automatic feeding platform is arranged in cooperation, the automatic feeding platform is used for arranging glass in a flat manner, glass is distributed in an array and conveyed, the flat array of the glass is realized by the rotation conveying of first inclined rollers and second inclined rollers of a dispersion mechanism, the structure is simple, the working efficiency is high, and the structure is simple.

Description

Technical Field

[0001] This invention relates to the field of tempered glass processing technology, and in particular to a glass tempering furnace and tempering method. Background Technology

[0002] A glass tempering furnace is a specialized industrial device that processes ordinary flat glass into tempered glass through a specific heating-rapid cooling process. Its core function is to significantly improve the mechanical strength and thermal shock resistance of the glass by changing the stress distribution inside the glass, while also causing the glass to break into small, non-sharp particles, reducing the risk of injury. It is the core equipment for achieving the "tempering modification" of glass.

[0003] In the prior art, in order to facilitate the distribution of several glass arrays on a conveyor line and then simultaneously feed the arrayed glass into the tempering furnace, the invention patent with application number 202411090291.8 specifically discloses a glass tempering furnace feeding device with guiding function and its feeding process, which can arrange the placed glass sheets and transport the glass sheets through the first conveyor roller and the second conveyor roller.

[0004] Although the above-mentioned technical solution can achieve array distribution conveying of glass on the conveyor line, the structure of the glass tempering furnace feeding device of this technical solution is too complex, the conveying steps are too cumbersome, and the processing efficiency is low. Summary of the Invention

[0005] To address the above problems, this invention provides a glass tempering furnace and tempering method. By combining an automatic feeding platform with existing tempering furnace technology, the glass is laid out in a flat array using the automatic feeding platform, enabling the glass to be distributed and conveyed in an array. The flat array of the glass is achieved entirely by the rotational conveying of the first and second inclined rollers of the dispersing mechanism. The structure is simple, the working efficiency is high, and the structure is simple.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A glass tempering furnace, comprising:

[0008] Tempering furnace and automatic feeding platform;

[0009] The tempering furnace performs tempering processing on glass that is horizontally laid out and conveyed.

[0010] The automatic feeding platform is connected to the feed inlet of the tempering furnace. The automatic feeding platform automatically feeds the tempering furnace and includes a flat feeding machine and a conveyor. The flat feeding machine lays the glass flat and the conveyor transports the laid glass into the tempering furnace.

[0011] The flat-laying feeder includes a dispersing mechanism located at the feeding end. The dispersing mechanism obliquely disperses and conveys the glass laid flat on it. The dispersing mechanism includes a first oblique roller, a second oblique roller, and a conveying roller arranged in parallel along the glass conveying direction. The first oblique roller, the second oblique roller, and the conveying roller are all rotatably arranged. The first oblique roller and the second oblique roller cooperate to obliquely convey the glass located at both ends of the width direction of the dispersing mechanism to the middle of the width direction of the dispersing mechanism.

[0012] Guide rubber rods and guide bars are provided between adjacent first and second inclined rollers and between the second inclined roller and the conveying roller, forming a dividing area for the glass.

[0013] As an improvement, the first inclined roller and the second inclined roller convey the glass obliquely through the forward and reverse spiral sections spirally arranged on the roller body;

[0014] The second inclined roller has a coaxially arranged flat rotating part on the outer side of the forward rotating part and the reverse rotating part;

[0015] The conveying roller has a coaxially arranged horizontal rotating part along its axial direction.

[0016] As an improvement, the flat-laying feeder also includes a frame, on which the first inclined roller, the second inclined roller and the conveying roller are rotatably mounted;

[0017] Along the glass conveying direction, several feeding wheel shafts are also equidistantly arranged on the rear side of the conveying roller, and the feeding wheel shafts carry the glass for conveying.

[0018] One side of the frame is provided with a drive assembly that drives the first inclined roller, the second inclined roller, the conveying roller, and the feed wheel shaft to rotate synchronously.

[0019] As an improvement, the guide rubber rod group is disposed in the axial middle of the second inclined roller. The guide rubber rod group includes two sets of guide rubber rods that are vertically rotated and are arranged to rub against each other.

[0020] The guide rods are symmetrically arranged on both sides of the guide rubber rod assembly.

[0021] As an improvement, there is a height difference between the guide rubber rod and the guide bar. Both the guide rubber rod and the guide bar are driven to rise and fall by the lifting assembly provided below. Initially, the guide bar is located below the apex of the second inclined roller. After being lifted, the guide bar is higher than the apex of the second inclined roller.

[0022] As an improvement, both the guide rubber rod and the guide bar are connected to the drive assembly via a transmission assembly, so that the rotational tangent direction of the guide rubber rod and the guide bar respectively in contact with the glass is consistent with the glass conveying direction.

[0023] As an improvement, a rubber stop is provided at the output end of the flat-laying feeder. The rubber stop is lifted by the lifting assembly to block and limit the glass located at the output end of the flat-laying feeder.

[0024] The output end of the flat-laying feeder is equipped with a sensor to detect and limit the movement of glass.

[0025] As an improvement, a robotic arm for transporting glass is provided at the input end of the flat-laying feeder. The robotic arm transports the glass and places it horizontally at the edge of the width direction of the input end of the flat-laying feeder.

[0026] As an improvement, the tempering furnace includes an automatic conveyor line connected to the conveyor. The automatic conveyor line is covered with a sealing cover on its outside, and the automatic conveyor line is divided into a heating section, a rapid cooling section, a slow cooling section and an output section along the glass conveying direction.

[0027] Furthermore, the present invention provides a tempering method based on the glass tempering furnace described above, comprising the following steps:

[0028] Step a: Edge grinding and chamfering. Use a double-sided edge grinding machine to grind and chamfer the cut glass. The grinding speed is 1-3m / min, the chamfer width is 0.5-2mm, and the chamfer angle is 45°±5. Ensure that the edges are smooth, without jagged edges or burrs.

[0029] Step b: Cleaning and drying. Use a fully automatic glass cleaning machine to remove dust, oil, and grinding debris from the glass surface. The pre-wash / main wash section is 40-50℃, the rinsing section is at room temperature 20-25℃, and the hot air drying section is at 80-120℃ with an air velocity of 3-5m / s. After drying, the moisture content of the glass surface is ≤0.1%.

[0030] Step c: First, the glass is laid horizontally at the edge of the wide direction of the feeding end of the automatic feeding platform's laying feeder. The first and second inclined rollers of the dispersing mechanism rotate and cooperate to drive the glass to be obliquely conveyed to the middle of the wide direction of the laying feeder, where it is stopped by the guide rubber rod group.

[0031] Step d: Secondary paving. Place the glass horizontally again at the edge of the wide direction of the feeding end of the paving feeder. The glass is limited by the raised guide bar so that each partition at the output end of the paving feeder is paved with a set of glass. The paved glass is transported to the entrance of the tempering furnace by the conveyor connected to the paving feeder.

[0032] Step e, tempering heating: The glass, which is horizontally conveyed in the tempering furnace, is heated by heating elements until it softens but does not flow.

[0033] Step f, quenching and cooling: The heated glass is quickly cooled by uniformly impacting the glass surface with high-pressure cold air, causing the surface layer to cool down and shrink rapidly, while the interior remains at a high temperature.

[0034] Step g, Output: After the glass has cooled for 10-20 seconds, the surface temperature of the glass is ≤50℃ when it comes out of the furnace.

[0035] The beneficial effects of this invention are as follows:

[0036] (1) The present invention uses the first inclined roller and the second inclined roller of the "dispersion mechanism" of the flat feeding machine to transport the glass initially placed on the wide edge to the middle through the cooperation of the spiral forward rotation part and the reverse rotation part. Combined with the "guide rubber rod group + guide rod" to form a separation area, the glass can be arranged in an orderly manner. The error of the distance between adjacent glass can be controlled within ≤2mm, avoiding the collision problem caused by the stacking and misalignment of glass during traditional manual feeding. At the same time, the guide rubber rod is made of rubber and has a mutual friction design, which can limit the position and buffer the glass contact force. Combined with the lifting logic of "the guide rod is initially lower than the inclined roller and then higher than the inclined roller", it can accurately adapt to the array distribution requirements of the glass, and finally reduce the glass breakage rate to below 0.3% during the feeding stage.

[0037] (2) The guide rods and guide rubber rods of the flat feeding machine of the present invention are all controlled by the lifting component. The limit height can be adjusted according to the glass thickness to avoid limit failure caused by the difference in glass thickness. The spacing between the first inclined roller, the second inclined roller and the conveying roller of the dispersing mechanism can be finely adjusted by the frame. With the adjustable handling position function of the robot, it can adapt to rectangular glass with a width of 600-2400mm and a length of 800-3600mm. There is no need to replace equipment components for different specifications of glass, reducing the production line changeover time.

[0038] (3) All moving parts of the present invention, such as the first inclined roller, the second inclined roller, the conveying roller, the feeding wheel shaft, the guide rod, and the guide rubber rod, are centrally driven by the drive assembly, and the transmission connection point adopts a sealed dustproof design to reduce the wear of parts caused by dust entry, extend the service life of the equipment, and the rubber block combined with the sensor can ensure that the glass is accurately conveyed in an array, and that there is a gap between the glass conveyed in the previous and subsequent batches so that they do not interfere with each other and the conveying is orderly.

[0039] (4) The present invention covers the full automation of “feeding-pretreatment-tempering-output”. The robotic arm automatically transports the glass to the flat feeding machine. The drive components synchronously drive the first inclined roller, the second inclined roller, the conveying roller, and the feeding wheel shaft to rotate without the need for multiple independent drives. The sensor detects the glass position in real time and links the rubber stop to limit the position. The conveyor and the tempering furnace automatic conveying line are seamlessly connected. No manual intervention is required throughout the process. Compared with traditional semi-automatic equipment, this solution can realize continuous operation of “glass feeding-tempering completion”. A single production line can process 60-80 pieces of glass per hour. Traditional equipment processes about 40-50 pieces per hour, which increases production efficiency by more than 40%. At the same time, it reduces 3-4 manual operation positions, reducing labor costs and human operation errors.

[0040] (5) The tempering furnace of the present invention adopts a segmented structure of “heating section + rapid cooling section + slow cooling section + output section”, and forms a closed temperature control environment with a sealing cover: the heating section can accurately control the glass softening temperature to avoid local overheating and flow; the rapid cooling section uses high-pressure cold air to uniformly impact the glass surface, so that a stable stress difference is formed between the surface and the interior; the slow cooling section can eliminate the residual stress inside the glass and slow cool for 10-20s, which ultimately increases the impact strength of the tempered glass by 3-5 times and the bending strength by 2-3 times. In addition, the pretreatment process has an edge grinding and chamfering speed of 1-3m / min and a chamfering size of 0.5-2mm. After cleaning and drying, the moisture content is ≤0.1%, which can completely remove the burrs and surface impurities on the glass edge and avoid the “bubbles and edge bursting” defects caused by impurities during the tempering process. The surface flatness error of the tempered glass is ≤0.1mm / ㎡.

[0041] In summary, this invention has the advantages of fast automatic array arrangement speed, good arrangement rhythm, good tempering effect, and high degree of automation, and is especially suitable for the field of fully automatic tempering processing technology for tempered glass. Attached Figure Description

[0042] Figure 1 This is a side view of the tempering furnace in Embodiment 1 of the present invention;

[0043] Figure 2 This is a three-dimensional structural diagram of the automatic feeding platform according to Embodiment 1 of the present invention;

[0044] Figure 3 This is a schematic diagram of the three-dimensional structure of the flat-laying feeding machine according to Embodiment 1 of the present invention;

[0045] Figure 4 This is a schematic diagram of the three-dimensional structure of the first inclined roller in Embodiment 2 of the present invention;

[0046] Figure 5 This is a schematic diagram of the three-dimensional structure of the second inclined roller in Embodiment 2 of the present invention;

[0047] Figure 6This is a schematic diagram of the three-dimensional structure of the conveyor roller in Embodiment 2 of the present invention;

[0048] Figure 7 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0049] Figure 8 This is a three-dimensional structural diagram of the lifting component in Embodiment 3 of the present invention;

[0050] Figure 9 This is a three-dimensional structural diagram of the transmission component in Embodiment 3 of the present invention;

[0051] Figure 10 This is a front view of the lifting assembly in Embodiment 3 of the present invention.

[0052] Figure 11 This is a schematic diagram of the three-dimensional structure of the robotic arm in Embodiment 5 of the present invention;

[0053] Figure 12 This is a top view of the tempering furnace in Embodiment 6 of the present invention;

[0054] Figure 13 This is a schematic diagram of the method flow in Embodiment 7 of the present invention.

[0055] Figure reference numerals: Tempering furnace I, Automatic feeding platform II, Glass 100, Flat feeding machine 1, Dispersing mechanism 11, First inclined roller 111, Forward rotating section 1111, Reverse rotating section 1112, Flat rotating section 1113, Second inclined roller 112, Conveying roller 113, Limiting plate 1130, Frame 12, Feeding wheel shaft 13, Drive assembly 14, Drive motor 141, Drive shaft 142, Drive gear 143, Transmission gear 144, Driven gear 145, Guide rubber rod assembly 15, Guide rubber rod 1 51, Guide rod 16, Lifting assembly 17, Cylinder 171, Lifting frame 172, Synchronous pulley set 173, Transmission assembly, Transmission synchronous pulley set 180, Rotating shaft 181, Gear set 182, Auxiliary rotating shaft 183, Transmission gear set 184, Rubber stop 19, Sensor 10, Conveyor 2, Robotic arm 3, Vacuum suction nozzle 31, Automatic conveyor line 4, Heating section 41, Rapid cooling section 42, Air duct 421, High-pressure centrifugal fan 422, Slow cooling section 43, Output section 44, Sealing cover 5. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0059] Example 1:

[0060] like Figures 1-3 As shown, a glass tempering furnace includes:

[0061] Tempering furnace I and automatic feeding platform II;

[0062] The tempering furnace I performs tempering processing on the horizontally laid glass 100;

[0063] The automatic feeding platform II is connected to the feed inlet of the tempering furnace I. The automatic feeding platform II automatically feeds the tempering furnace I. The automatic feeding platform II includes a flat feeding machine 1 and a conveyor 2. The flat feeding machine 1 lays the glass 100 flat, and the conveyor 2 transports the laid glass 100 into the tempering furnace I.

[0064] The flat-laying feeder 1 includes a dispersing mechanism 11 located at the feeding end. The dispersing mechanism 11 obliquely disperses and conveys the glass 100 laid flat on it. The dispersing mechanism 11 includes a first oblique roller 111, a second oblique roller 112, and a conveying roller 113 arranged in parallel along the conveying direction of the glass 100. The first oblique roller 111, the second oblique roller 112, and the conveying roller 113 are all rotatably arranged. The first oblique roller 111 and the second oblique roller 112 cooperate to obliquely convey the glass 100 located at both ends in the width direction of the dispersing mechanism 11 to the middle part in the width direction of the dispersing mechanism 11.

[0065] Guide rubber rod group 15 and guide rod 16 are provided between adjacent first inclined roller 111 and second inclined roller 112, and between second inclined roller 112 and conveyor roller 113. The guide rubber rod group 15 and guide rod 16 form a partition area of ​​the glass 100. The glass spacing between adjacent partition areas is ≥50mm to avoid mutual interference during heating.

[0066] It is worth noting that, compared to the technical solution described in patent application number 202411090291.8 in the background art, this invention, through the rotation of the first inclined roller 111 and the second inclined roller 112, obliquely conveys the glass laid flat at the edge of the width direction to the middle of the width direction of the flat laying feeder 1. The guide rubber rod group 15 located in the middle of the flat laying feeder 1 blocks and limits the glass, and at the same time, the sensor located at the guide rubber rod group 15 senses the glass and the guide rubber rod group. When the contact is completed, an electrical signal is sent to control the guide rod 16 to lift, blocking and limiting the subsequent flat-laid glass. Specifically, the next group of glass is still laid flat to the edge in the width direction. Through the rotation of the first inclined roller 111 and the second inclined roller 112, the glass is obliquely conveyed to the guide rod 16 to contact. After that, the glass is blocked by the guide rod 16 and continues to be conveyed forward, thus forming 4 groups of glass arranged in a side-by-side array. Compared with the technical documents in the background art, this arrangement has the following advantages:

[0067] 1. The technical solution in the background technology requires placing the glass between the corresponding guide rollers and the guide rollers. The position of the glass is different each time, which leads to the glass feeding position being different each time, increasing the difficulty of feeding and reducing the feeding efficiency. However, as described above, the position of the glass feeding is fixed each time, and it is located at the edges on both sides of the width direction of the feeding end of the flat feeding machine. This makes the glass feeding action simpler and greatly improves the working efficiency.

[0068] 2. In the prior art, after the glass array is completed, the guide rollers and guide rollers need to be reset to facilitate the feeding of the next group of glass, which is very cumbersome. Moreover, during the arrangement, the guide rollers and guide rollers need to be repeatedly manipulated. The entire arrangement process involves many actions, which makes the glass prone to misalignment, causing the arrangement process to stall and affecting the arrangement efficiency. After each group of glass is arranged, the reset of the guide rollers and guide rollers takes up working time, further reducing the glass arrangement efficiency. In contrast, as mentioned above, the glass arrangement of the present invention is carried out by the rotation of the first inclined roller and the second inclined roller. Therefore, after the previous group of glass is arranged, the next group of glass can be directly fed and arranged without the need for reset, resulting in higher working efficiency.

[0069] Example 2:

[0070] Referring to Example 1, the difference between Example 2 and Example 1 lies in the following:

[0071] like Figures 4-7 As shown, the first inclined roller 111 and the second inclined roller 112 convey the glass 100 obliquely through the forward rotation part 1111 and the reverse rotation part 1112 spirally arranged on the roller body;

[0072] A coaxially arranged horizontal rotating part 1113 is provided on the outer side of the forward rotating part 1111 and the reverse rotating part 1112 on the second inclined roller 112;

[0073] The conveying roller 113 is provided with a coaxially arranged horizontal rotating part 1113 along the axial direction.

[0074] In this invention, two sets of first inclined rollers 111 are arranged in parallel, one set of second inclined rollers 112 is arranged, and one set of conveying rollers 113 is arranged. The spiral directions of the forward-rotating part 1111 and the reverse-rotating part 1112 both point towards the center of the flat-laying feeder 1. Through the rotation of the forward-rotating part 1111 and the reverse-rotating part 1112, the glass obtains a driving force for lateral movement while being conveyed forward, thereby forming an oblique movement effect. It should be noted that the outer side of the forward-rotating part 1111 and the reverse-rotating part 1112 of the second inclined roller 112 is made into a flat-rotating part 1113. The main reason is that after being obliquely conveyed by the first inclined roller 111 in the previous stage, the glass is conveyed... When the glass is delivered to the second inclined roller 112, it is already located on the forward rotating part 1111 and the reverse rotating part 1112 on the second inclined roller 112, and has left the area of ​​the flat rotating part 1113. The subsequent glass does not enter the forward rotating part 1111 and the reverse rotating part 1112 of the second inclined roller 112 due to the abutment and limitation of the guide rod 16. Instead, it enters the flat rotating part 1113 on the second inclined roller 112 and is transported by the flat rotating part 1113. The flat rotating part 1113 does not generate a driving force for lateral movement of the glass, so that the subsequent glass and the previous glass form a parallel transport effect. The second inclined roller 112 can both guide the previous glass obliquely and guide the subsequent glass forward.

[0075] Furthermore, the preferred array of glass in this invention comprises four sets of parallel-conveyed glass. The first two sets of glass are fed and laid flat at the feeding positions on both sides of the wide-width direction of the feed end. The first two sets of glass are conveyed to the guide rod group 15 by the first inclined roller 111 and the second inclined roller 112. When the glass touches the guide rod group 15, the arrangement of the middle two sets of glass is completed. The next two sets of glass are also fed and laid flat at the feeding positions on both sides of the wide-width direction of the feed end. At this time, the first inclined roller 111 still guides the oblique conveying of the next two sets of glass, so that the glass moves to the point of contact and limitation with the guide rod 16. This forms a parallel arrangement of four sets of glass. The four sets of glass are then conveyed forward along the conveying direction. During the conveying process, one side of the glass is guided and limited by the limiting plate 1130.

[0076] In addition, the flat feeding machine 1 also includes a frame 12, on which the first inclined roller 111, the second inclined roller 112 and the conveying roller 113 are rotatably mounted;

[0077] Along the conveying direction of the glass 100, a plurality of feeding wheel shafts 13 are also arranged at equal intervals on the rear side of the conveying roller 113, and the feeding wheel shafts 13 carry the glass 100 for conveying.

[0078] A drive assembly 14 is provided on one side of the frame 12 to drive the first inclined roller 111, the second inclined roller 112, the conveying roller 113 and the feed wheel shaft 13 to rotate synchronously.

[0079] Specifically, the drive assembly 14 includes a drive motor 141, a drive shaft 142, a drive gear 143, a transmission gear 144, and a driven gear 145. The drive motor 141 is mounted on the frame 12, the drive gear 143 is mounted on the motor shaft of the drive motor 141, and the drive shaft 142 is horizontally rotatably mounted above the drive motor 141. This drive shaft 142 is perpendicular to the first inclined roller 111, the second inclined roller 112, the conveying roller 113, and the feed wheel shaft 13. The feeding roller 113 and the feeding wheel shaft 13 are arranged parallel to each other. Several transmission gears 144 are installed on the drive shaft 142. The transmission gears 144 are respectively arranged in a one-to-one correspondence with the first inclined roller 111, the second inclined roller 112, the conveying roller 113 and the feeding wheel shaft 13. The driven gears 145 are respectively installed at the ends of the first inclined roller 111, the second inclined roller 112, the conveying roller 113 and the feeding wheel shaft 13 that are correspondingly engaged with the transmission gears 144. The drive gears 143, transmission gears 144 and driven gears 145 are all helical gears.

[0080] It should be noted that when the drive motor 141 operates, it drives the drive shaft 142 to rotate through the engagement of the drive gear 143 and one of the transmission gears 144. The rotation of the drive shaft 142 causes all the transmission gears 144 to rotate synchronously. Then, through the engagement of the driven gear 145, it drives all the first inclined rollers 111, the second inclined rollers 112, the conveying rollers 113 and the feeding wheel shaft 13 to rotate, thereby conveying and arranging the glass.

[0081] In addition, it should be noted that the structure of the conveyor 2 is similar to that of the flat-laying feeder 1. The difference is that all the conveying rollers on the conveyor 2 are of the feeding wheel shaft 13 structure, and the drive structure of the conveyor 2 is also similar to that of the drive assembly 14. The conveyor 2 is used to buffer the glass 100 that has been arranged and laid flat.

[0082] Example 3:

[0083] Referring to Example 2, the difference between Example 3 and Example 2 lies in the following:

[0084] like Figures 8-10 As shown, the guide rubber rod group 15 is disposed in the axial middle part of the second inclined roller 112. The guide rubber rod group 15 includes two groups of guide rubber rods 151 that are vertically rotated and are arranged to rub against each other.

[0085] The guide rods 16 are symmetrically arranged on both sides of the guide rubber rod assembly 15.

[0086] There is a height difference between the guide rubber rod 151 and the guide rod 16. Both the guide rubber rod 151 and the guide rod 16 are driven to rise and fall by the lifting assembly 17 provided below. Initially, the guide rod 16 is located below the vertex of the second inclined roller 112. After being raised, the guide rod 16 is higher than the vertex of the second inclined roller 112.

[0087] Furthermore, both the guide rod 151 and the guide rod 16 are connected to the drive assembly 14 via a transmission assembly, thereby driving the guide rod 151 and the guide rod 16 to align with the rotational tangent direction of the corresponding contact glass 100 and the conveying direction of the glass 100.

[0088] Specifically, the guide rubber rod group 15 is located in the middle of the width direction of the flat feeding machine 1. The guide rubber rod group 15 includes two sets of guide rubber rods 151 arranged vertically and parallel to each other. The guide rubber rods 151 rub against each other. When the glass comes into contact with the guide rubber rods 151 and is stopped, the guide rubber rods 151 rotate, which just cancels the lateral force of the glass being conveyed obliquely, so that the glass can be conveyed normally along the conveying direction.

[0089] Furthermore, the guide rod 16 is lifted upwards by the lifting assembly 17 while the glass is in contact with the guide rubber rod 151. The guide rod 16 itself is lower than the guide rubber rod 151 and is initially lower than the second inclined roller 112. After being lifted, the second inclined roller 112 protrudes out of the second inclined roller 112. The glass of the latter two groups then contacts and is limited by the protruding guide rod 16. The guide rod 16 is also made of rubber and rotates to counteract the lateral force exerted on the glass by the first inclined roller 111.

[0090] In addition, it should be noted that the lifting assembly 17 includes a cylinder 171 and a lifting frame 172. The cylinder 171 is mounted on the frame 12 and is set to push upward. The lifting frame 172 is mounted on the pushing end of the cylinder 171. The guide rubber rod assembly 15 and the guide rod 16 are both rotatably mounted on the lifting frame 172. Along the glass conveying direction, the guide rubber rod assembly 15 and the guide rod 16, which are located on the same straight line, are connected by a synchronous belt pulley assembly 173, so that the guide rubber rod assembly 15 and the guide rod 16 rotate synchronously.

[0091] The transmission assembly includes a rotating shaft 181 mounted on the frame 12. The rotating shaft 181 is connected to any of the first inclined roller 111, the second inclined roller 112, the conveying roller 113, or the feed wheel shaft 13 via a transmission synchronous pulley set 180. Therefore, the drive assembly 14 will synchronously drive the rotating shaft 181 to rotate. A gear set 182 is mounted on the rotating shaft 181. The gear set 182 drives the rotating shaft 181 to connect with an auxiliary rotating shaft 183. The auxiliary rotating shaft 183 is vertically mounted on the lifting frame 172. Another set of transmission gears 184 is mounted on the top of the auxiliary rotating shaft 183 and is connected to the guide rubber rod set 15 and the guide rod 16, so that the guide rubber rod set 15 and the guide rod 16 rotate synchronously. One set of guide rubber rods 151 between the guide rubber rod sets 15 rotates in the above manner, and the other set rotates by friction.

[0092] It should be emphasized that gear set 182 is a helical gear set, and transmission gear set 184 is a conventional gear transmission set. Furthermore, when the lifting assembly 17 drives the guide rod 16 to lift, the transmission gear set 184 will not disengage from the transmission engagement.

[0093] Example 4:

[0094] Referring to Example 3, the difference between Example 4 and Example 3 is that:

[0095] like Figure 9 As shown, the output end of the flat-laying feeder 1 is provided with a rubber stop 19. The rubber stop 19 is lifted by the lifting assembly 17 to block and limit the glass 100 located at the output end of the flat-laying feeder 1.

[0096] The output end of the flat-laying feeder 1 is equipped with a sensor 10 for sensing and detecting the glass 100 that is blocked and limited.

[0097] It should be noted that the rubber block 19 is installed on the lifting frame 172 and is lifted by the lifting component 17 to block and limit the glass arranged on the flat feeding machine 1. After the rubber block 19 blocks the glass, the sensor 10 detects the glass that is limited. When all four groups of glass are in place at the rubber block 19, the sensor detects it and the rubber block 19 descends, so that the four groups of glass are synchronously transported to the conveyor 2.

[0098] It should be emphasized that the rubber stop 19 and the guide rod 16 are raised and lowered synchronously. Therefore, when the two middle sets of glass are in contact with the guide rod 151 and the limit is reached, the rubber stop 19 has already been raised. When the four sets of glass are arranged at the rubber stop 19, the rubber stop 19 and the guide rod 16 are lowered synchronously. The arranged glass is conveyed, and at the same time, new glass is also put in and arranged. The arrangement action is closely connected.

[0099] Example 5:

[0100] Referring to Example 1, the difference between Example 5 and Example 1 is as follows:

[0101] like Figure 11 As shown, a robotic arm 3 for transporting glass 100 is provided at the input end of the flat-laying feeder 1. The robotic arm 3 transports the glass 100 and places it horizontally at the edge of the width direction of the input end of the flat-laying feeder 1.

[0102] It should be noted that the flat-laying feeder 1 is fed by the robotic arm 3, and there are two sets of robotic arms symmetrically arranged, which feed the feed stations at the two sides of the input end of the flat-laying feeder 1 in the width direction.

[0103] Furthermore, the robotic arm 3 grasps the glass through vacuum adsorption, and the width and number of vacuum adsorption nozzles 31 in the robotic arm 3 can be adjusted according to the size of the glass.

[0104] Example 6:

[0105] Referring to Example 1, the difference between Example 6 and Example 1 lies in the following:

[0106] like Figure 12As shown, the tempering furnace I includes an automatic conveyor line 4, which is connected to the conveyor 2. The automatic conveyor line 4 is covered with a sealing cover 5 on its outer side, and the automatic conveyor line 4 is divided into a heating section 41, a rapid cooling section 42, a slow cooling section 43 and an output section 44 along the conveying direction of the glass 100.

[0107] It should be noted that the conveyor line 4 used in the tempering furnace I of the present invention is preferably a roller conveyor line. A sealing cover 5 is closed on the outside of the conveyor line 4. The material of the sealing cover 5 is preferably high-temperature resistant ceramic or quartz. The heating section 41 adopts heating technology. The heating technology is preferably infrared heating tube, quartz tube + electric heating wire or gas burner, which is commonly used in large furnaces. The heating speed is fast and the heating is evenly distributed above and below the glass to ensure that the upper and lower surfaces heat up synchronously. The temperature control of the heating section 41 is divided into multiple temperature zones in the furnace, such as the inlet preheating zone, the middle constant temperature zone, and the outlet heat preservation zone. The temperature is monitored in real time by thermocouples, and the heating power is adjusted by the PLC control system to avoid local overheating that causes glass deformation such as warping or cracking. The temperature of the heating section 41 is preferably 680-740℃. This temperature heats the glass to a state of softening but not flowing.

[0108] The rapid cooling section 42 preferably uses high-speed cold air to "instantly cool" the high-temperature glass surface, creating a stress gradient between the glass surface and the interior. This is the core step of physical tempering. A duct 421 is connected to the sealing cover 5 at the rapid cooling section 42. The duct 421 is connected to a high-pressure centrifugal fan 422. The high-pressure centrifugal fan 422 introduces high-pressure cold air into the rapid cooling section 42 through the duct 421. The high-pressure cold air evenly impacts the glass surface, causing the surface layer to cool down and shrink rapidly, forming compressive stress, while the interior remains at a high temperature and is subsequently cooled slowly, forming tensile stress, ultimately forming tempered glass with "stress balance".

[0109] Even after rapid cooling, a certain temperature difference remains between the glass surface and its interior, especially for thick glass. If it is taken directly out of the furnace, the following problems may occur due to sudden temperature changes or uneven stress release:

[0110] 1. Uneven stress distribution: After the surface is rapidly cured, the slow release of residual heat inside may cause secondary stress, leading to glass bending, warping or hidden cracks.

[0111] 2. Risk of cracking: Thick glass, such as ≥8mm, has a high internal temperature. After rapid cooling, the temperature difference between the inside and outside is large. Direct exposure to room temperature can easily cause it to crack due to thermal shock.

[0112] 3. Decreased flatness: Sudden changes in cooling rate may cause slight deformation of the glass under stress, affecting flatness, especially for precision glass products.

[0113] The function of the slow cooling section 43 is to gradually reduce the cooling intensity, such as reducing the wind pressure and extending the cooling time, so that the temperature inside and outside the glass slowly approaches the same, reducing thermal stress and making the stress distribution more uniform, thereby reducing the above-mentioned risks. The temperature of the slow cooling section is preferably 50-80℃.

[0114] Thin glass ≤5mm: Due to its small thickness and fast heat conduction, the temperature difference between the inside and outside is small after rapid cooling. Some production lines can omit the slow cooling section. By optimizing the rapid cooling parameters, such as shortening the cooling time and reducing the air pressure, the quality requirements can be met, thereby improving production efficiency.

[0115] For thick glass (≥8mm) or special glass such as Low-E glass and ultra-clear glass: a slow cooling section must be installed. Residual heat inside thick glass is difficult to dissipate quickly; slow cooling can prevent internal stress concentration. Special glass has high requirements for flatness and stress uniformity, and deformation needs to be controlled through gradient cooling.

[0116] High-requirement products, such as architectural curtain wall glass and automotive safety glass, are typically equipped with slow cooling sections to ensure stress stability because they need to meet strict impact resistance and stability standards.

[0117] Output section 44 receives the cooled tempered glass, performs preliminary inspections such as appearance and flatness, and then transports it to subsequent processes.

[0118] Example 7:

[0119] The glass tempering method of the glass tempering furnace of Example 7 of the present invention is described with reference to Examples 1-6.

[0120] like Figure 13 As shown, it includes the following steps:

[0121] Step a: Edge grinding and chamfering. Use a double-sided edge grinding machine to grind and chamfer the cut glass. The grinding speed is 1-3m / min, the chamfer width is 0.5-2mm, and the chamfer angle is 45°±5. Ensure that the edges are smooth, without jagged edges or burrs.

[0122] Step b: Cleaning and drying. Use a fully automatic glass cleaning machine to remove dust, oil, and grinding debris from the glass surface. The pre-wash / main wash section is 40-50℃, the rinsing section is at room temperature 20-25℃, and the hot air drying section is at 80-120℃ with an air velocity of 3-5m / s. After drying, the moisture content of the glass surface is ≤0.1%.

[0123] Step c: First, the glass is laid horizontally at the edge of the wide direction of the feeding end of the automatic feeding platform II's laying feeder 1. The first inclined roller 111 and the second inclined roller 112 of the dispersing mechanism 11 rotate and cooperate to drive the glass to be obliquely conveyed to the middle of the wide direction of the laying feeder 1, where it is stopped by the guide rubber rod group 15.

[0124] Step d, Secondary flat laying: The glass is placed horizontally again at the edge of the wide direction of the feeding end of the flat laying feeder 1. The glass is limited by the raised guide bar 16, so that each partition at the output end of the flat laying feeder 1 is covered with a set of glass. The laid glass is transported to the entrance of the tempering furnace I by the conveyor 2 connected to the flat laying feeder 1.

[0125] Step e, tempering heating: The glass conveyed horizontally in tempering furnace I is heated by heating elements until it softens but does not flow.

[0126] Step f, quenching and cooling: The heated glass is quickly cooled by uniformly impacting the glass surface with high-pressure cold air, causing the surface layer to cool down and shrink rapidly, while the interior remains at a high temperature.

[0127] Step g, Output: After the glass has cooled for 10-20 seconds, the surface temperature of the glass is ≤50℃ when it comes out of the furnace.

[0128] It should be noted that in step a, the grinding time is 1.5-2 m / min for glass with a thickness of 3-6 mm and 1-1.5 m / min for glass with a thickness of 8-12 mm. The preferred grinding wheel grit size in the double-sided grinding machine is 80-120 mesh diamond grinding wheel for coarse grinding and 200-400 mesh for fine grinding to ensure that the edge is smooth and free of serrations.

[0129] In step b, the cleaning agent is preferably a neutral glass-specific cleaning agent (concentration 0.5%-1%, pH value 7-8, to avoid corroding the glass).

[0130] In step e, the heating temperature, heating time, and homogenization time of the glass are positively correlated with the thickness of the glass, as shown in Table 1 below:

[0131] Table 1

[0132]

[0133] Furthermore, the temperature difference between different areas inside the furnace is ≤±5℃, and the heating tube power is automatically adjusted through real-time monitoring by multiple thermocouples.

[0134] In addition, glass with a thickness greater than 12mm needs to be heated in stages (first heat to 650℃ and hold for 10 seconds, then heat to the target temperature) to avoid excessive temperature difference between the inside and outside.

[0135] During heating, the roller conveyor needs to rotate slowly (5-10 r / min) to prevent the glass from being in contact with the roller conveyor for a long time, which could lead to "roller mark" defects.

[0136] In step f, the cooling air pressure, cooling time, and height of the air nozzle from the glass surface are positively correlated with the glass thickness, as detailed in Table 2 below:

[0137] Table 2

[0138]

[0139] Among them, the air nozzles need to be distributed in a matrix (≥100 air nozzles per square meter), and the air volume deviation of each air nozzle should be ≤±5% (adjusted individually by the air valve).

[0140] The speed of the roller conveyor in the cooling section is the same as that in the heating section (0.5-1m / min), ensuring that the glass stays in the cooling section for a time that precisely matches the thickness requirements.

[0141] In step g, the cooled glass needs to stay in the slow cooling zone (temperature 50-80℃) for 10-20 seconds to avoid direct contact with room temperature air, which would cause "secondary stress" (especially for glass with a thickness > 8mm). Then it is sent to the finished product area by the discharge roller conveyor. The surface temperature of the glass must be ≤ 50℃ when it comes out of the furnace (detected by an infrared thermometer).

[0142] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A glass tempering furnace, characterized in that, include: Tempering furnace (I) and automatic feeding platform (II); The tempering furnace (I) performs tempering processing on the horizontally laid glass (100); The automatic feeding platform (II) is connected to the feed inlet of the tempering furnace (I). The automatic feeding platform (II) automatically feeds the tempering furnace (I). The automatic feeding platform (II) includes a flat feeding machine (1) and a conveyor (2). The flat feeding machine (1) lays the glass (100) flat, and the conveyor (2) transports the laid glass (100) into the tempering furnace (I). The flat-laying feeder (1) includes a dispersing mechanism (11) located at the feeding end. The dispersing mechanism (11) obliquely disperses and conveys the glass (100) laid flat on it. The dispersing mechanism (11) includes a first oblique roller (111), a second oblique roller (112), and a conveying roller (113) arranged in parallel along the conveying direction of the glass (100). The first oblique roller (111), the second oblique roller (112), and the conveying roller (113) are all rotatably arranged. The first oblique roller (111) and the second oblique roller (112) cooperate to obliquely convey the glass (100) located at both ends of the width direction of the dispersing mechanism (11) to the middle of the width direction of the dispersing mechanism (11). A guide rubber rod group (15) and a guide rod (16) are provided between the adjacent first inclined roller (111) and second inclined roller (112), and between the second inclined roller (112) and conveying roller (113). The guide rubber rod group (15) and the guide rod (16) form a partition area of ​​the segmented glass (100). The first inclined roller (111) and the second inclined roller (112) convey the glass (100) obliquely through the forward-rotating part (1111) and the reverse-rotating part (1112) spirally arranged on the roller body; the forward-rotating part (1111) and the reverse-rotating part (1112) on the second inclined roller (112) are provided with a coaxially arranged flat rotating part (1113) on the outside; the conveying roller (113) is provided with a coaxially arranged flat rotating part (1113) along the axial direction. The guide rubber rod group (15) is disposed in the axial middle part of the second inclined roller (112). The guide rubber rod group (15) includes two sets of guide rubber rods (151) that are vertically rotated and are rubbed against each other. The guide rods (16) are symmetrically disposed on both sides of the guide rubber rod group (15). There is a height difference between the guide rubber rod (151) and the guide rod (16). Both the guide rubber rod (151) and the guide rod (16) are driven to rise and fall by the lifting assembly (17) provided below. Initially, the guide rod (16) is located below the top of the second inclined roller (112). After being lifted, the guide rod (16) is higher than the top of the second inclined roller (112). The array of glass on the dispersing mechanism (11) includes four sets of parallel conveyed glass. The first two sets of glass are fed and laid flat at the feeding positions on both sides of the feed end in the wide direction. The first two sets of glass are conveyed to the guide rod group (15) by the first inclined roller (111) and the second inclined roller (112). When the glass touches the guide rod group (15), the arrangement of the middle two sets of glass is completed. The last two sets of glass are fed and laid flat at the feeding positions on both sides of the feed end in the wide direction. At this time, the first inclined roller (111) still guides the last two sets of glass to be conveyed obliquely, so that the glass moves to the point of contact and limitation with the guide rod (16), forming a parallel arrangement of the four sets of glass.

2. The glass tempering furnace according to claim 1, characterized in that: The flat-laying feeder (1) also includes a frame (12), on which the first inclined roller (111), the second inclined roller (112) and the conveying roller (113) are rotatably mounted; Along the conveying direction of the glass (100), a plurality of feeding wheel shafts (13) are also arranged at equal intervals on the rear side of the conveying roller (113), which carry the glass (100) for conveying. A drive assembly (14) is provided on one side of the frame (12) to drive the first inclined roller (111), the second inclined roller (112), the conveying roller (113) and the feed wheel shaft (13) to rotate synchronously.

3. The glass tempering furnace according to claim 2, characterized in that: The guide rod (151) and the guide rod (16) are both connected to the drive assembly (14) through a transmission assembly, so that the rotation tangent direction of the guide rod (151) and the guide rod (16) respectively in contact with the glass (100) is consistent with the conveying direction of the glass (100).

4. The glass tempering furnace according to claim 1, characterized in that: The output end of the flat-laying feeder (1) is provided with a rubber stop (19), which is lifted by the lifting assembly (17) to block and limit the glass (100) located at the output end of the flat-laying feeder (1); The output end of the flat-laying feeder (1) is equipped with a sensor (10) for sensing and detecting the glass (100) that is blocked and limited.

5. A glass tempering furnace according to claim 1, characterized in that: The input end of the flat-laying feeder (1) is equipped with a robotic arm (3) for transporting glass (100). The robotic arm (3) transports the glass (100) and places it horizontally at the edge of the width direction of the input end of the flat-laying feeder (1).

6. A glass tempering furnace according to claim 1, characterized in that: The tempering furnace (I) includes an automatic conveyor line (4), which is connected to the conveyor (2). The automatic conveyor line (4) is wrapped with a sealing cover (5) on the outside. The automatic conveyor line (4) is divided into a heating section (41), a rapid cooling section (42), a slow cooling section (43), and an output section (44) along the conveying direction of the glass (100).

7. A tempering method based on the glass tempering furnace according to any one of claims 1-6, characterized in that, Includes the following steps: Step a: Edge grinding and chamfering. Use a double-sided edge grinding machine to grind and chamfer the cut glass. The grinding speed is 1-3m / min, the chamfer width is 0.5-2mm, and the chamfer angle is 45°±5. Ensure that the edges are smooth, without jagged edges or burrs. Step b: Cleaning and drying. Use a fully automatic glass cleaning machine to remove dust, oil, and grinding debris from the glass surface. The pre-wash / main wash section is 40-50℃, the rinsing section is at room temperature 20-25℃, and the hot air drying section is at 80-120℃ with an air velocity of 3-5m / s. After drying, the moisture content of the glass surface is ≤0.1%. Step c: First, the glass is laid horizontally at the edge of the wide direction of the feeding end of the automatic feeding platform (II) flat feeding machine (1). The first inclined roller (111) and the second inclined roller (112) of the dispersing mechanism (11) rotate and cooperate to drive the glass to be obliquely conveyed to the middle of the wide direction of the flat feeding machine (1), and the guide rubber rod group (15) abuts and limits it. Step d, second flat laying, the glass is placed horizontally again at the edge of the wide direction of the feeding end of the flat laying feeder (1), and the glass is limited by the raised guide bar (16) so that each partition at the output end of the flat laying feeder (1) is covered with a set of glass. The laid glass is transported to the entrance of the tempering furnace (I) by the conveyor (2) connected to the flat laying feeder (1). Step e, tempering heating: The glass, which is horizontally conveyed in the tempering furnace (I), is heated by heating elements until it softens but does not flow. Step f, quenching and cooling: The heated glass is quickly cooled by uniformly impacting the glass surface with high-pressure cold air, causing the surface layer to cool down and shrink rapidly, while the interior remains at a high temperature. Step g, Output: After the glass has cooled for 10-20 seconds, the surface temperature of the glass is ≤50℃ when it comes out of the furnace.

Images