A wind-grid roller conveyor device and tempering furnace for improving stress spots in tempered glass
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-08-14
AI Technical Summary
这种风栅辊道布置方式存在的问题是玻璃在风栅内进行吹风淬冷时，虽然玻璃下表面上形成不了接触区间上的盲区，不呈现印痕差异化（俗称绳斑），但是吹风淬冷时的风不能够通过芳纶绳螺距的空隙处对玻璃下表面进行吹风散热、导致与玻璃上表面的吹风散热的淬冷速度不一致，从而形成了钢化后的玻璃应力不均匀，增加了玻璃自爆的机率
（1）本实用新型的辊道装置通过独特的芳纶绳缠绕方式，有效解决了现有风栅辊道布置方式存在的问题。一方面，由于每个辊道单元中的若干辊道组之间的芳纶绳缠绕位置相互偏移，使得玻璃在风栅内进行吹风淬冷时，芳纶绳与玻璃下表面的接触区间不再始终一致，避免了玻璃与芳纶绳接触的区域形成盲区，从而减少了接触到芳纶绳与接触不到芳纶绳的地方呈现的印痕差异化，也就是大大减轻了绳斑现象，显著提升了钢化玻璃的美观度。
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Figure CN224633411U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tempered glass production equipment technology, and in particular to an air grid roller conveyor device and tempering furnace for improving stress spots in tempered glass. Background Technology
[0002] There are two commonly used arrangements for air grating roller conveyors: The first type of air grate roller arrangement uses fully wound ropes of equal width and pitch, arranged in a symmetrical group. Several such roller assembly units carry the glass in reciprocating motion. The problem with this arrangement is that while the glass is being cooled by air blowing within the grate, although no blind zone forms on the lower surface of the glass, and no differential marks (commonly known as rope marks) are observed, the air blowing during cooling cannot effectively dissipate heat from the lower surface of the glass through the gaps in the aramid rope pitch. This results in a different cooling rate compared to the upper surface, leading to uneven stress in the tempered glass and increasing the likelihood of spontaneous breakage.
[0003] The second type of air-cooled grate roller arrangement uses a group of identical roller units with the same pitch and symmetrical left and right sides to carry the glass in a reciprocating motion, thereby achieving the required tempering effect within the air-cooled grate. The problem with this arrangement is that during the air-cooling process, the contact area between the aramid ropes of the rollers carrying the glass and the lower surface of the glass remains consistent. This creates blind spots where the glass does not contact the aramid ropes, resulting in different marks (commonly known as rope spots) between the areas that do not contact the aramid ropes, significantly affecting the aesthetics of the tempered glass. Utility Model Content
[0004] This application is made in view of the problem of rope spots easily occurring in the existing tempered glass processing process, and its purpose is to provide an air grid roller conveyor device and tempering furnace that improves the stress spots of tempered glass.
[0005] Specifically, the first aspect of this application provides a wind grid roller conveyor device for improving stress spots in tempered glass. The wind grid roller conveyor device includes several roller conveyor units, and each roller conveyor unit includes several roller conveyor groups. Aramid ropes are wound on the rollers. Two roller conveyors with aramid ropes of the same pitch and with the aramid ropes wound in a symmetrical direction to the left and right are considered as one roller conveyor group. The winding positions of the aramid ropes among the roller conveyor groups in each roller conveyor unit are offset from each other.
[0006] Furthermore, the pitch of the aramid rope wound on the roller is an integer multiple N of the aramid rope width, and N≥2.
[0007] Furthermore, the starting points of the several roller groups in each roller unit that wind the aramid rope are successively offset by a distance equal to the width of the rope.
[0008] Furthermore, in the roller conveyor unit, the first roller conveyor group consists of aramid ropes wound with the same pitch at the same starting point and with the aramid ropes wound in symmetrical directions to the left and right. The second roller conveyor group consists of aramid ropes wound with the starting point of the aramid ropes of the wind grid rollers adjacent to the first roller conveyor group, offset by a distance equal to the width of the ropes relative to the first roller conveyor group, and the aramid ropes wound in symmetrical directions to the left and right. Similarly, the third roller conveyor group consists of aramid ropes wound with the starting point of the ...
[0009] Furthermore, the number of roller sets in the roller conveyor unit is the ratio of the aramid rope pitch to the aramid rope width.
[0010] A second aspect of this application provides a tempering furnace comprising the aforementioned air grate roller conveyor device for improving stress spots in tempered glass.
[0011] This utility model has the following beneficial effects: (1) The roller conveyor device of this utility model effectively solves the problems existing in the existing wind grid roller conveyor arrangement by means of a unique aramid rope winding method. On the one hand, because the aramid rope winding positions of several roller groups in each roller conveyor unit are offset from each other, when the glass is quenched by air blowing in the wind grid, the contact area between the aramid rope and the lower surface of the glass is no longer consistent, thus avoiding the formation of blind spots in the area where the glass contacts the aramid rope. This reduces the difference in marks between the areas that contact the aramid rope and those that do not, which greatly reduces the rope spot phenomenon and significantly improves the aesthetics of tempered glass.
[0012] On the other hand, the pitch of the aramid rope wound on the roller is an integer multiple of the width of the aramid rope, N (N≥2), which ensures that the air during the blowing quenching can pass through the gaps in the pitch of the aramid rope to blow heat away the lower surface of the glass. This makes the blowing heat dissipation and quenching speed of the lower and upper surfaces of the glass closer, effectively improving the uneven stress of the tempered glass and reducing the probability of glass spontaneous breakage.
[0013] (2) For tempering furnaces using this air grate roller conveyor device, the quality of the tempered glass produced is greatly improved. In market competition, this high-quality tempered glass has a greater advantage and can meet the stringent requirements of multiple fields such as construction and automobiles for the aesthetics and safety of tempered glass. At the same time, the structure of this air grate roller conveyor device is relatively simple, and it is easy to modify and install on existing tempering furnace equipment. It has good prospects for promotion and application and can bring significant economic and social benefits to tempered glass manufacturing enterprises. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this drawing or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this drawing. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0015] Figure 1 This is one of the structural schematic diagrams of the wind-blown roller conveyor system; Figure 2 This is the second schematic diagram of the structure of the wind-blown roller conveyor device; Figure 3 This is the third schematic diagram of the structure of the wind-blown roller conveyor device.
[0016] Explanation of icon numbers: 1. Roller conveyor unit; 2. First roller conveyor group; 3. Second roller conveyor group; 4. Third roller conveyor group; 5. Fourth roller conveyor group; 6. Aramid rope.
[0017] The purpose, features, and advantages of this accompanying drawing will be further explained in conjunction with the embodiments and with reference to the accompanying drawing. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following description and illustration are provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.
[0019] Obviously, the following description is merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios without any inventive effort. Furthermore, it is understood that although the effort involved in such development may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.
[0020] An embodiment of the first aspect of this application provides a wind grid roller conveyor device for improving stress spots in tempered glass. The wind grid roller conveyor device includes a plurality of roller conveyor units 1, and each roller conveyor unit 1 includes a plurality of roller conveyor groups. Aramid ropes 6 are wound on the rollers. Two roller conveyors with aramid ropes 6 having the same pitch and with the aramid ropes 6 wound in a symmetrical direction to the left and right constitute a roller conveyor group. The winding positions of the aramid ropes 6 between the plurality of roller conveyor groups in each roller conveyor unit 1 are offset from each other.
[0021] The glass tempering process consists of two parts: uniform heating to release the original stress of the glass, and uniform cooling to reshape a new stress layer, ensuring that the compressive stress from the upper and lower surfaces of the glass to the middle is greater than the tensile stress from the middle to the upper and lower surfaces, thus forming tempered glass. The air grate roller conveyor is located at the quenching air grate of the tempering furnace, which is the uniform cooling stage. When the glass is cooled by air blowing within the quenching air grate, this air grate roller conveyor needs to carry the glass in a reciprocating oscillating motion to ensure that the cooling rate of the upper and lower surfaces of the glass is made more uniform, thereby achieving the purpose of glass tempering.
[0022] After the glass is heated, it enters the initial stage of the quenching air grate process. Because the glass temperature is high at around 620℃, it is prone to leaving marks (commonly known as rope spots) upon contact with the aramid ropes 6 on the air grate rollers. The aramid ropes 6 wound in this application's air grate roller device are wound with different starting points and pitches. The pitch is an integer multiple of the width of the aramid rope 6, N, and the winding directions are symmetrically arranged as a group. The starting points of adjacent groups of aramid ropes 6 are offset by the width of one aramid rope 6. Following this pattern, N groups form a combined unit. Several such roller units carry the glass in reciprocating motion, ensuring that the lower surface of the glass can contact the aramid ropes 6, thus preventing differential marks (commonly known as rope spots). Furthermore, the airflow during quenching can dissipate heat from the lower surface of the glass through the gaps in the pitch of the aramid ropes 6, achieving a more uniform heat dissipation and thus making the stress on the tempered glass more uniform.
[0023] In this application, because the winding positions of the aramid ropes 6 between several roller groups in each roller unit 1 are offset from each other, when the glass is quenched by air blowing in the air grid, the contact area between the aramid ropes 6 and the lower surface of the glass is no longer consistent. This avoids the formation of blind spots in areas where the glass does not contact the aramid ropes 6, thereby reducing the difference in marks between areas that contact the aramid ropes 6 and areas that do not, which greatly reduces the rope spot phenomenon and significantly improves the aesthetics of tempered glass.
[0024] In this embodiment, the pitch of the aramid rope 6 wound on the roller conveyor is an integer multiple N of the width of the aramid rope 6, and N≥2. This arrangement ensures that during the glass quenching process, there is sufficient space for air to pass through the gaps in the pitch of the aramid rope 6 to dissipate heat from the lower surface of the glass. The larger the value of N, the larger the gaps between the aramid ropes 6, resulting in smoother airflow and more uniform heat dissipation from the lower surface of the glass. Furthermore, since the pitch is an integer multiple of the width of the aramid rope 6, the winding of the aramid rope 6 is more regular and orderly, which helps ensure the stability and reliability of the entire air grate roller conveyor device.
[0025] In this embodiment, the starting points of the aramid ropes 6 wound around several roller groups in each roller unit 1 are successively offset by a distance equal to the width of the rope. The offset direction of the aramid ropes 6 is to the left of the adjacent roller group by a distance equal to the width of the aramid rope. Through this offset setting, the glass will successively contact the roller groups with aramid ropes 6 wound at different starting points during the reciprocating motion. During the contact between the glass and the roller groups, the contact point between the aramid ropes 6 and the lower surface of the glass changes continuously, further preventing the formation of rope spots due to prolonged contact between a certain area of the lower surface of the glass and the aramid ropes 6. At the same time, this offset setting also allows all areas of the lower surface of the glass to be more fully exposed to the wind blowing through the pitch gaps of the aramid ropes 6, further improving the uniformity of heat dissipation on the lower surface of the glass.
[0026] In practical applications, the pitch multiple N of the aramid rope 6 and the number of roller sets can be adjusted according to the specific circumstances for glass of different specifications and sizes. For example, for thicker glass, the value of N can be appropriately increased to ensure better heat dissipation on the lower surface of the glass, making the quenching rate of the upper and lower surfaces of the glass more consistent, thereby improving the stress uniformity of the tempered glass. For glass products with extremely high aesthetic requirements, the number of roller sets can be increased to make the contact between the glass and the aramid rope 6 more dispersed, further reducing rope spot phenomenon.
[0027] In this embodiment, in the roller conveyor unit 1, the first roller conveyor group 2 consists of aramid ropes 6 wound with the same pitch at the same starting point and with the winding direction of the aramid ropes 6 symmetrically arranged left and right. The starting point of the aramid ropes 6 wound on the adjacent roller conveyor group 2 is offset relative to the first roller conveyor group 2 by a distance equal to the rope width, and the winding direction of the aramid ropes 6 is symmetrically arranged left and right to form the second roller conveyor group 3. Similarly, the starting point of the aramid ropes 6 wound on the third roller conveyor group 4 is offset relative to the starting point of the aramid ropes 6 wound on the second roller conveyor group 3 by a distance equal to the rope width. This arrangement makes the winding layout of the aramid ropes 6 within the entire roller conveyor unit 1 highly regular and systematic. On the one hand, the offset of the starting points between adjacent roller conveyor groups ensures that the contact area between the glass and the aramid ropes 6 changes continuously as the glass moves within the air grating, avoiding rope spot problems caused by a fixed contact area. On the other hand, the symmetrical winding direction of the aramid ropes 6 within each roller conveyor group helps maintain the stability of the glass's movement on the roller conveyor, making the stress on the glass more uniform during the quenching process. Moreover, this grouping and offset arrangement effectively utilizes the space of the roller conveyor, maximizing the role of the aramid rope 6. During the reciprocating motion of the glass, each roller conveyor group positively impacts the glass quenching process, resulting in more uniform and comprehensive heat dissipation from the lower surface of the glass. Simultaneously, this regular arrangement facilitates the manufacturing and installation of the air grate roller conveyor system, reducing production and maintenance costs.
[0028] In this embodiment, the number of roller groups in the roller unit 1 is the ratio of the pitch of the aramid rope 6 to the width of the aramid rope 6.
[0029] See Figure 1 When the ratio of the pitch of the aramid rope 6 to the width of the aramid rope 6 is 2, the number of roller groups in each roller unit 1 is 2; the winding position of the aramid rope 6 of the second roller group 3 is offset to the left by the width of the aramid rope 6 relative to the first roller group 2, and the wind grid roller device contains multiple roller units 1.
[0030] See Figure 2 When the ratio of the pitch of the aramid rope 6 to the width of the aramid rope 6 is 3, the number of roller groups in each roller unit 1 is 3; the winding position of the aramid rope 6 of the third roller group 4 is offset to the left by the width of the aramid rope 6 relative to the winding position of the aramid rope 6 of the second roller group 3, and the winding position of the aramid rope 6 of the second roller group 3 is offset to the left by the width of the aramid rope 6 relative to the winding position of the aramid rope 6 of the first roller group 2. The wind grid roller device contains multiple roller units 1.
[0031] See Figure 3When the ratio of the pitch of the aramid rope 6 to the width of the aramid rope 6 is 4, the number of roller groups in each roller unit 1 is 4; the winding position of the aramid rope 6 of the fourth roller group 5 is offset to the left by the width of the aramid rope 6 relative to the winding position of the aramid rope 6 of the third roller group 4, the winding position of the aramid rope 6 of the third roller group 4 is offset to the left by the width of the aramid rope 6 relative to the winding position of the aramid rope 6 of the second roller group 3, and the winding position of the aramid rope 6 of the second roller group 3 is offset to the left by the width of the aramid rope 6 relative to the winding position of the aramid rope 6 of the first roller group 2. The wind grid roller conveyor device contains multiple roller units 1.
[0032] This structural design allows the air grate roller conveyor to maintain effective control over the glass quenching process under different pitch-to-width ratios. Combinations of varying numbers of roller sets can accommodate the tempering requirements of various glass specifications. As the ratio of the aramid rope 6 pitch to its width increases, the number of roller sets increases, and the contact points between the glass and the aramid rope 6 become more dispersed, further reducing the possibility of rope spots. In actual production, the various roller units 1 of the air grate roller conveyor work collaboratively to support the glass in a reciprocating oscillating motion. During the glass's movement on the rollers, the aramid ropes 6 of different roller sets contact the lower surface of the glass in a specific pattern, not only avoiding contact blind spots but also ensuring that all areas of the lower surface of the glass are evenly exposed to airflow. Moreover, this regular contact pattern helps improve the heat dissipation efficiency of the lower surface of the glass, making the quenching rates of the upper and lower surfaces of the glass more similar, thereby further improving the stress uniformity of the tempered glass.
[0033] An embodiment of the second aspect of this application provides a tempering furnace including the aforementioned air grate roller conveyor device for improving stress spots in tempered glass.
[0034] The overall performance of this tempering furnace has been significantly improved after being equipped with this wind-grid roller device that improves stress spots in tempered glass. In actual production, the furnace operates more stably, effectively reducing the defect rate caused by rope spots and uneven stress. For tempered glass manufacturers, this translates to improved product quality and reduced production costs.
[0035] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.
Claims
1. A wind-lathe device for improving the stress blemish of tempered glass, characterized in that, The wind grid roller conveyor device includes several roller conveyor units (1), and each roller conveyor unit (1) includes several roller conveyor groups. Aramid ropes (6) are wound on the roller conveyor. Two roller conveyors with aramid ropes (6) of the same pitch and symmetrical winding directions are formed as a roller conveyor group. The winding positions of the aramid ropes (6) between the roller conveyor groups in each roller conveyor unit (1) are offset from each other.
2. The wind rack roller arrangement to improve stress mark of tempered glass according to claim 1, wherein, The pitch of the aramid rope (6) wound on the roller is an integer multiple N of the width of the aramid rope (6), and N≥2.
3. The wind rack roller device to improve stress mark of tempered glass according to claim 1, wherein, The starting point of the aramid rope (6) wound by several roller groups in each roller unit (1) is successively offset by a distance equal to the width of the rope.
4. The wind rack roller arrangement to improve stress mark of tempered glass according to claim 3, wherein, In the roller conveyor unit (1), the aramid ropes (6) with the same pitch are wound at the same starting point of the wind grid roller conveyor and the winding direction of the aramid ropes (6) is symmetrical to the left and right to form the first roller conveyor group (2). The starting point of the winding of the aramid ropes (6) of the roller conveyor adjacent to the first roller conveyor group (2) is offset by a distance equal to the width of the rope relative to the first roller conveyor group (2) and the winding direction of the aramid ropes (6) is symmetrical to the left and right to form the second roller conveyor group (3). And so on, the starting point of the winding of the aramid ropes (6) of the third roller conveyor group (4) is offset by a distance equal to the width of the rope relative to the starting point of the winding of the aramid ropes (6) of the second roller conveyor group (3).
5. The wind rack roller arrangement to improve stress mark of tempered glass according to claim 3, wherein, The number of roller groups in the roller unit (1) is the ratio of the pitch of the aramid rope (6) to the width of the aramid rope (6).
6. A tempering furnace characterized by, A wind grid roller conveyor device comprising the method for improving stress spots in tempered glass as described in any one of claims 1-5.