Quenching air knife mechanism for tempering flat glass

Abstract

The invention provides a plate glass tempering quenching air knife mechanism, and relates to the technical field of glass processing, a glass tempering production line comprises a plurality of conveying rollers arranged at intervals, the air knife mechanism comprises a plurality of air cooling assemblies located between adjacent conveying rollers, and each air cooling assembly comprises two air knife structures symmetrically distributed on the upper side and the lower side of a glass plate; the air knife structure comprises an inner air grid barrel and an outer air grid barrel, the inner air grid barrel is rotationally connected into the outer air grid barrel, a plurality of first air grooves facing the glass plate face are formed in the outer air grid barrel at intervals, a plurality of second air grooves distributed in the whole area of the inner air grid barrel are formed in the inner air grid barrel, the inner air grid barrel is communicated with an air source, and the outer air grid barrel is fixed to a rack of the glass production line. The inner air grid cylinder is driven by a power unit to rotate; the first air groove and the second air groove are both in a spiral strip shape, and the spiral direction of the first air groove is opposite to the spiral direction of the second air groove. The air cooling device has the advantages of uniform air cooling and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass processing, in particular to a flat glass toughening quenching air knife mechanism. BACKGROUND

[0002] Toughening is a process for improving the strength of glass after forming by surface compressive stress, the glass is heated to near the softening point (about 600-700 DEG C), and then rapidly and uniformly cooled (air cooling), the more uniform the cooling, the more uniform the compressive stress surface layer and the tensile stress inner layer formed by the quenching process, and the lower the glass self-explosion rate, at present, the quenching air knife for online toughening of flat glass is a porous structure, that is, the air outlet holes are arranged on the air tank in an alternating manner and are aligned with the surface to be cooled of the glass, this way forms a number of annular temperature difference states with the air outlet holes as the center on the surface of the glass, and the non-uniformity of the wind and the difference in the surface temperature of the glass form stress spots on the surface of the glass, which is not conducive to the homogenization of the glass, and the surface area blowing cannot achieve the requirement of rapid and high strength blowing and cooling. SUMMARY

[0003] The present application is to solve the problems existing in the prior art, and provides an air knife mechanism capable of improving the uniformity of glass quenching.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: a flat glass toughening quenching air knife mechanism, the glass toughening production line comprises a plurality of conveying rollers arranged alternately, characterized in that the air knife mechanism comprises a plurality of air cooling components located between adjacent conveying rollers, the air cooling component comprises two air knife structures symmetrically distributed on the upper and lower sides of the glass plate, the air knife structure comprises an inner air grid cylinder and an outer air grid cylinder, the inner air grid cylinder is rotationally connected in the outer air grid cylinder, a plurality of air grooves one are arranged on the outer air grid cylinder in an alternating manner and face the glass plate surface, a plurality of air grooves two are arranged on the inner air grid cylinder and are distributed on the surface of the inner air grid, the inner air grid cylinder is connected with the gas source in communication, the outer air grid cylinder is fixed on the rack of the glass production line, and the inner air grid cylinder is driven to rotate by a power unit; the air groove one and the air groove two are in the shape of spiral strips, and the spiral direction of the air groove one is opposite to that of the air groove two.

[0005] Further, the air grooves two are arranged in multiple columns along the axis of the inner air grid cylinder, the spacing of the single air groove two is the same as that of the adjacent air groove one, and the specification of the single air groove one is the same as that of the air groove two.

[0006] Further, the inner wind grid cylinder outer wall and the inner wall of the outer wind grid cylinder have a gap. The small gap between the inner wind grid cylinder and the outer wind grid cylinder can achieve the effect of full air slot out of air, but the overlapping area of air slot one and air slot two is the main air outlet position, and the air flow intensity is larger, while the area where air slot one does not overlap with air slot two has relatively small air outlet and relatively weak air flow intensity, avoiding the temperature difference between the local and other positions of the glass plate during the cooling process.

[0007] Further, the width of the two ends of the air slot one is narrower than the middle part. The middle part of the air slot one is closer to the glass plate, which can form an overlapping position with a larger aperture than the two ends, thereby making the pressure difference not too large when the air flows out at all positions of the air slot one.

[0008] Further, the air inlet ends of adjacent inner wind grid cylinders are staggered. Since the air pressure of the inner wind grid cylinder close to the air inlet end is slightly larger than that far from the air inlet end, in order to improve the consistency of the air received by the two sides of the glass plate, the staggered air inlet mode is adopted, and the air inlet ends of the two adjacent inner wind grid cylinders are located on the two sides of the glass plate.

[0009] Further, the power unit includes support wheels fixed on both ends of the inner wind grid cylinder, which abut against the glass plate surface.

[0010] Alternatively, the power unit includes a bevel gear one fixed on the inner wind grid cylinder below the glass plate, a bevel gear two connected to the inner wind grid cylinder above the glass plate, the bevel gear one and the bevel gear two are engaged, the bevel gear two and the inner wind grid cylinder are connected by a compression spring, and the end of the inner wind grid cylinder below the glass plate is also fixedly provided with a pulley one, the pulley two is fixedly provided on the conveying roller, and the pulley one and the pulley two adjacent thereto are connected by a belt.

[0011] In this scheme, the air flow is discharged through the air outlet hole formed in the overlapping area of air slot one and air slot two, and acts on the glass plate surface to be cooled. When the inner wind grid cylinder is in a rotating state, the overlapping area of air slot one and air slot two changes, which causes the position of the air outlet hole acting on the glass plate surface to be switched constantly. In addition, air slot one and air slot two are both spiral strips, so that the air outlet hole can cover the entire glass plate during the movement of the glass plate, and the cooling position is switched quickly, avoiding the blind area caused by the traditional fixed air outlet position, improving the air uniformity, and optimizing the homogeneity of the glass after tempering. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the air cooling assembly;

[0013] Figure 2 It is a structural schematic diagram of the air knife structure in the separated state of the inner wind grid cylinder and the outer wind grid cylinder.

[0014] Legend: 1, inner air baffle cylinder; 11, air slot two; 2, outer air baffle cylinder; 21, air slot one; 3, bevel gear one; 4, bevel gear two; 5, compression spring; 6, pulley one; 7, conveying roller. DETAILED DESCRIPTION

[0015] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0016] As shown in Figure 1 and Figure 2 , the glass tempering production line includes a plurality of conveying rollers 7 arranged alternately, and the air knife mechanism includes a plurality of air cooling assemblies arranged between adjacent conveying rollers 7, each air cooling assembly including two air knife structures symmetrically arranged on the upper and lower sides of the glass plate, each air knife structure including an inner air baffle cylinder 1 and an outer air baffle cylinder 2, the inner air baffle cylinder 1 being rotatably connected in the outer air baffle cylinder 2, the outer air baffle cylinder 2 having a plurality of air slots one 21 arranged alternately thereon and facing the glass plate, the inner air baffle cylinder 1 having a plurality of air slots two 11 arranged on the surface of the inner air baffle cylinder 1, the inner air baffle cylinder 1 being connected to a gas source, the outer air baffle cylinder 2 being fixed to the rack of the glass production line, and the inner air baffle cylinder 1 being driven to rotate by a power unit.

[0017] The air slots two 11 are arranged in multiple columns along the axis of the inner air baffle cylinder 1, and the spacing of the air slots two 11 in a single column is the same as the spacing of the adjacent air slots one 21.

[0018] There is a gap between the outer wall of the inner air baffle cylinder 1 and the inner wall of the outer air baffle cylinder 2. By providing a small gap between the inner air baffle cylinder 1 and the outer air baffle cylinder 2, the effect of air outlet of all air slots one 21 can be achieved. However, the overlapping area of the air slots one 21 and the air slots two 11 is the main air outlet position, and the air flow intensity is relatively large. The area where the air slots one 21 do not overlap with the air slots two 11 has relatively small air outlet and relatively weak air flow intensity, which avoids the temperature difference between the local and other positions of the glass plate being too large during the cooling process.

[0019] The width of the air slots one 21 at both ends is smaller than the middle part. The middle part of the air slots one 21 is closer to the glass plate, which can form an overlapping position with a larger aperture than the two ends, so that the pressure difference of the air pressure is not too large when the air is out at all positions of the air slots one 21.

[0020] The air inlet ends of adjacent inner air baffle cylinders 1 are staggered. The air pressure of the inner air baffle cylinder 1 close to the air inlet end is slightly larger than that of the inner air baffle cylinder 1 far from the air inlet end. In order to improve the consistency of the air received by the glass plate on both sides, the air inlet ends of the adjacent two inner air baffle cylinders 1 are located on the two sides of the glass plate.

[0021] The power unit comprises support wheels fixed at both ends of the inner air baffle cylinder 1, which abut against the surface of the glass plate, and is used to drive the inner air baffle cylinder 1 to rotate relative to the outer air baffle cylinder 2.

[0022] The power unit can also be structured as follows: a bevel gear one 3 fixed on the inner air baffle cylinder 1 below the glass plate, a bevel gear two 4 spline-connected on the inner air baffle cylinder 1 above the glass plate, the bevel gear one 3 meshing with the bevel gear two 4, a compression spring 5 connected between the bevel gear two 4 and the inner air baffle cylinder 1, a pulley one 6 fixed on the end of the inner air baffle cylinder 1 below the glass plate, a pulley two fixed on the conveying roller 7, and the pulley one 6 and the pulley two adjacent thereto connected through a belt.

[0023] In the present scheme, the air flow is discharged through the air outlet holes formed in the overlapping area of the air chute one 21 and the air chute two 11, and acts on the surface of the glass plate to be cooled. When the inner air baffle cylinder 1 is in a rotating state, the position of the air outlet holes acting on the surface of the glass plate is constantly switched due to the change of the overlapping area of the air chute one 21 and the air chute two 11. In addition, the air chute one 21 and the air chute two 11 are both spiral strips, so that the air outlet holes can cover the whole glass plate during the movement of the glass plate, and the cooling position is quickly switched, avoiding the wind blind area caused by the traditional fixed air outlet position, improving the wind uniformity, and optimizing the homogeneity of the glass after being tempered.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A flat glass tempering quenching air knife mechanism, the glass tempering production line comprises a plurality of conveying rollers (7) arranged alternately, characterized in that: The wind knife mechanism includes a plurality of wind cooling components located between adjacent conveying rollers (7), the wind cooling components including two wind knife structures symmetrically distributed on the upper and lower sides of the glass plate, the wind knife structure including an inner wind grid cylinder (1) and an outer wind grid cylinder (2), the inner wind grid cylinder (1) is rotatably connected to the outer wind grid cylinder (2), the outer wind grid cylinder (2) is provided with a plurality of wind troughs (21) facing the glass plate surface, the inner wind grid cylinder (1) is provided with a plurality of wind troughs (11) distributed over the entire area of ​​the inner wind grid, the inner wind grid cylinder (1) is connected to an air source, the outer wind grid cylinder (2) is fixed on a frame of the glass production line, the inner wind grid cylinder (1) is driven to rotate by a power unit; the wind troughs (21) and the wind troughs (11) are both in the shape of spiral strips, and the spiral direction of the wind troughs (21) is opposite to the spiral direction of the wind troughs (11).

2. A flat glass tempering and quenching air knife mechanism according to claim 1, characterized in that: The wind troughs 2 (11) are arranged in multiple rows along the axis of the inner wind grid tube (1), and the spacing between wind troughs 2 (11) in a single row is the same as the spacing between adjacent wind troughs 1 (21); the specifications of a single wind trough 1 (21) are the same as those of wind trough 2 (11).

3. A flat glass tempering and quenching air knife mechanism according to claim 2, characterized in that: There is a gap between the outer wall of the inner wind grid cylinder (1) and the inner wall of the outer wind grid cylinder (2).

4. A flat glass tempering and quenching air knife mechanism according to claim 2, characterized in that: The width of the two ends of the air trough (21) is narrower than that of the middle part.

5. The flat glass tempering and quenching air knife mechanism according to claim 2, characterized in that: The air inlet ends of adjacent inner air grille cylinders (1) are misaligned.

6. A flat glass tempering and quenching air knife mechanism according to any one of claims 1 to 5, characterized in that: The power unit comprises support wheels fixed at both ends of the inner wind grid cylinder (1), and the support wheels are against the glass plate surface.

7. A flat glass tempering and quenching air knife mechanism according to any one of claims 1 to 5, characterized in that: The power unit comprises a bevel gear 1 (3) fixed on the inner wind grid cylinder (1) below the glass plate, a bevel gear 2 (4) spline-connected to the inner wind grid cylinder (1) above the glass plate, the bevel gear 1 (3) meshes with the bevel gear 2 (4), a compression spring (5) is connected between the bevel gear 2 (4) and the inner wind grid cylinder (1), a pulley 1 (6) is fixedly provided at the end of the inner wind grid cylinder (1) below the glass plate, a pulley 2 is fixedly provided on the conveying roller (7), and the pulley 1 (6) and the adjacent pulley 2 are connected by a belt.

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