Radiation distance adjustable glass heating device

Abstract

A radiation distance adjustable glass heating device is characterized in that a ceramic roller way is arranged in a furnace body in a penetrating manner, an upper heating assembly and a lower heating assembly are respectively arranged above and below the ceramic roller way, and each of the upper heating assembly and the lower heating assembly comprises a plurality of heating elements which are sequentially arranged left and right; each heating element is arranged in the furnace body through a fixing frame, a temperature measuring element is arranged on one side of each fixing frame, the other side of each fixing frame is connected with a driving unit, and the control mechanism can control the driving unit to act to conduct lifting adjustment of the heating elements through temperature feedback of the temperature measuring elements. Therefore, the local radiation distance of the surface of the to-be-heated glass can be accurately adjusted. The radiation distance adjustable glass heating device is simple in structure and convenient to use, the control mechanism can regulate and control the radiation distance between each heating element and the glass in real time through the driving unit by means of feedback of the temperature measuring element, and the problem that the local temperature is difficult to accurately control when the glass is heated is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of glass deep processing equipment, in particular to a glass heating device with adjustable radiation distance. Background Art

[0002] The physical tempering method of glass requires that the glass to be tempered be heated to a temperature close to the softening point in a tempering furnace, and then enter the cooling air grid for rapid cooling to complete the tempering of the glass. The quality of flat glass after tempering mainly depends on the control of the uniformity of the glass temperature during the heating and cooling process. Therefore, when flat glass is heated in a heating furnace, the main consideration is uniform heating. For the tempering of special-shaped glass such as partially curved glass, L-shaped glass, and hyperbolic glass, the furnace temperature of the curved part needs to be slightly higher than that of other parts to ensure that the special-shaped glass can be formed as required without affecting the tempering quality of other parts.

[0003] With the changes in market demand, the types and demand for flat glass and shaped glass are increasing, and the demand for flexible and diverse temperature control when heating glass in the heating furnace is becoming increasingly strong. At present, the glass heating devices in the prior art generally adopt matrix heating, that is, the position of the heating element is fixed (except for special occasions such as hot bending, baking and other equipment). For flat glass, although the heating element is placed on the same horizontal plane parallel to the glass, it is difficult to ensure the uniformity of glass heating due to various factors such as ceramic rollers and air injection at the furnace door. When tempering and heating shaped glass, due to the fixed position of the heating element, it is impossible to achieve a higher final heating temperature at the bent part of the shaped glass than at other positions, and it is difficult to achieve precise control of local temperature, which cannot meet actual tempering needs. Summary of the invention

[0004] In order to solve the above technical problems, the utility model provides a glass heating device with adjustable radiation distance, which connects a driving unit to each originally fixed heating element and fixes a temperature measuring element in the control area of ​​each heating element. By utilizing the feedback mechanism of the temperature measuring element, the control mechanism can adjust the radiation distance between each heating element and the glass in real time via the driving unit, so as to solve the problem that the local temperature is difficult to accurately control when the glass is heated.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the utility model is: a glass heating device with adjustable radiation distance, including a furnace body, a ceramic roller for conveying the glass to be heated is penetrated inside the furnace body, an upper heating assembly and a lower heating assembly are arranged above and below the ceramic roller, respectively, the upper heating assembly and the lower heating assembly each include a plurality of heating elements arranged in sequence on the left and right, each heating element is arranged inside the furnace body through a fixed frame, a temperature measuring element for detecting the temperature in the area controlled by the heating element is arranged on the side of the fixed frame close to the glass to be heated, and a driving unit for driving the fixed frame and the heating element to be lifted up and down is also connected to the side of the fixed frame away from the glass to be heated, the driving unit, the heating element and the temperature measuring element are all connected to a control mechanism, and the control mechanism can control the action of the driving unit to lift and lower the heating element through temperature feedback of the temperature measuring element, so as to realize precise adjustment of the local radiation distance of the surface of the glass to be heated.

[0006] Furthermore, the driving unit is an electric push rod or a hydraulic cylinder.

[0007] Furthermore, the multiple heating elements in the upper heating assembly and the lower heating assembly are arranged correspondingly up and down.

[0008] Furthermore, the temperature measuring element is arranged at the geometric center of the control area of ​​the corresponding heating element.

[0009] Furthermore, the control mechanism is arranged outside the furnace body.

[0010] Furthermore, a manual adjustment button is provided on the control mechanism.

[0011] Furthermore, the multiple heating elements are arranged parallel to the conveying direction of the ceramic roller.

[0012] Furthermore, the driving unit is arranged outside the furnace body.

[0013] Furthermore, the heating element is adjusted up and down in a direction perpendicular to the surface of the ceramic roller.

[0014] Furthermore, one end of the temperature measuring element is fixed on the furnace body, and the other end extends into the furnace body to a position close to the surface of the glass to be heated, and the heights of the multiple temperature measuring elements in the upper heating assembly and the heights of the multiple temperature measuring elements in the lower heating assembly from the surface of the glass to be heated are consistent.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model is a glass heating device with adjustable radiation distance, which has a simple structure and is easy to operate. The control mechanism in the device can automatically control the corresponding driving unit to adjust the corresponding heating element up and down according to the temperature feedback of each temperature measuring element connected to it, so as to adjust the radiation distance between each heating element and the glass in real time, thereby effectively realizing the precise control of the local temperature of each part when the glass is heated.

[0017] 2. The utility model is a glass heating device with adjustable radiation distance. By controlling the distance between the heating element and the glass and adjusting the radiation distance of the heating element to the glass in real time, the temperature of the glass during the heating process can be precisely controlled. This is more sensitive and effective than adjusting the local glass temperature by turning the furnace wire on and off. For flat glass, it is easier to achieve the goal of uniform heating of the glass from top to bottom during heating. For special-shaped glass, it is convenient to achieve the goal of making the final heating temperature of the curved part of the special-shaped glass higher than that of other positions, and it can achieve precise control of the local temperature to meet actual tempering needs. The overall temperature control of the device is highly accurate and has good practical effects, which can meet the market's demand for flexible and diverse temperature control when heating glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of Example 1;

[0020] Figure numerals: 1. furnace body, 2. heating element, 3. fixing frame, 4. ceramic roller, 5. glass to be heated, 6. temperature measuring element, 7. driving unit, 8. control mechanism. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described in detail below in conjunction with the drawings and embodiments. However, it should be understood that without further description, the elements, structures and features in one embodiment can also be beneficially combined with other embodiments. And the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without paying creative work.

[0022] It should be noted that: unless otherwise defined, the technical terms or scientific terms used in this document shall have the usual meanings understood by people with ordinary skills in the field to which the utility model belongs. The words "one", "an" or "the" and the like used in the patent application specification and claims of the utility model do not express quantitative limitations, but indicate the existence of at least one. The words "include" or "comprise" and the like indicate that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, but do not exclude other elements or objects with the same function.

[0023] As attached Figure 1 As shown, a radiation distance adjustable glass heating device of the utility model comprises a furnace body 1, a ceramic roller 4 for conveying a glass 5 to be heated is provided inside the furnace body 1, an upper heating assembly and a lower heating assembly are arranged above and below the ceramic roller 4, respectively, the upper heating assembly and the lower heating assembly each comprise a plurality of heating elements 2 sequentially arranged left and right, the plurality of heating elements 2 are arranged parallel to the conveying direction of the ceramic roller 4, and the plurality of heating elements 2 in the upper heating assembly and the lower heating assembly are arranged correspondingly up and down, each heating element 2 is arranged inside the furnace body 1 through a fixing frame 3, a temperature measuring element 6 for detecting the temperature in the area controlled by the heating element 2 is provided on one side of the fixing frame 3 close to the glass 5 to be heated, one end of the temperature measuring element 6 is fixed on the furnace body 1, and the other end extends into the furnace body 1 to a position close to the surface of the glass 5 to be heated, and the temperature measuring element 6 is arranged on the corresponding heating element 2 The control area is at the geometric center, and the heights of the multiple temperature measuring elements 6 in the upper heating assembly and the surface of the glass 5 to be heated are consistent, and the heights of the multiple temperature measuring elements 6 in the lower heating assembly and the surface of the glass 5 to be heated are also consistent. A driving unit 7 for driving the fixing frame 3 and the heating element 2 to be lifted up and down is connected to the side of the fixing frame 3 away from the glass 5 to be heated. The driving unit 7 is arranged on the outside of the furnace body 1. The driving unit 7 is an electric push rod or a hydraulic cylinder. The driving unit 7, the heating element 2 and the temperature measuring element 6 are all connected to the control mechanism 8. The control mechanism 8 is arranged on the outside of the furnace body 1. A manual adjustment button is also provided on the control mechanism 8. The control mechanism 8 can control the driving unit 7 to move the heating element 2 up and down in a direction perpendicular to the surface of the ceramic roller 4 through temperature feedback of the temperature measuring element 6, so as to realize precise adjustment of the local radiation distance of the surface of the glass 5 to be heated.

[0024] The method for controlling glass heating by using the above-mentioned local radiation distance adjustable glass heating device comprises the following steps:

[0025] S1. The control mechanism accurately controls the radiation distance of each heating element and can adjust it at any time. The temperature measuring element provides real-time feedback on the temperature of the area covered by each heating element.

[0026] S2. Input the target temperature of each heating element area into the control mechanism. If the temperature of a certain heating area fed back by the temperature measuring element during the glass heating process is too low, the control mechanism issues an instruction to reduce the distance between the heating element in this area and the glass; if the temperature of a certain heating area fed back by the temperature measuring element during the glass heating process is too high, the control mechanism issues an instruction to increase the distance between the heating element in this area and the glass;

[0027] As a preferred solution, the control mechanism presets reasonable radiation distances of the heating elements for glasses of different thicknesses and different layouts, and uses them when heating a certain type of glass.

[0028] As a preferred solution, if uneven heating of the glass occurs due to other factors such as ceramic rollers or air injection, the target temperature of each heating element area can be manually adjusted using the manual adjustment button on the control mechanism.

[0029] As a preferred solution, when tempering and heating special-shaped glass, the control mechanism analyzes the best glass placement plan based on the arrangement of heating elements.

[0030] Embodiment 1

[0031] As attached Figure 2 As shown, a glass heating device with adjustable radiation distance in this embodiment includes a furnace body 1, and a ceramic roller 4 for conveying a glass 5 to be heated is provided inside the furnace body 1. The glass 5 to be heated enters the furnace body 1 under the conveyance of the ceramic roller 4 for heating. In this embodiment, the height position of the lower heating assembly remains unchanged, and each heating element 2 in the upper heating assembly is fixed on a fixed frame 3, and can move up and down under the action of a driving unit 7, that is, the vertical distance between the multiple heating elements 2 located on the upper part of the ceramic roller 4 and the glass 5 to be heated can be adjusted. The driving unit 7 is connected to and controlled by a control mechanism 8, and a temperature measuring element 6 is placed near the geometric center of the area controlled by each heating element 2, and the temperature of the area covered by each heating element 2 is monitored in real time and fed back to the control mechanism 8. In this solution, the driving unit 7 is driven by an electric push rod, and a motor and other driving methods can also be used.

[0032] A method for controlling glass heating by adjusting the radiation distance comprises the following steps:

[0033] Step 1: The control mechanism 8 accurately controls the radiation distance of each heating element 2 located at the top and can adjust it at any time. The temperature measuring element 6 located at the top feeds back the temperature of the area covered by the corresponding heating element 2 in real time;

[0034] Step 2, input the target temperature of each area covered by the upper heating element 2 into the control mechanism 8. During the heating process of the glass 5 to be heated, if the temperature of a certain heating area fed back by a certain temperature measuring element 6 is too low, the control mechanism 8 issues a command to reduce the distance between the heating element 2 in this area and the glass 5 to be heated; if the temperature of a certain heating area fed back by a certain temperature measuring element 6 is too high, the control mechanism 8 issues a command to increase the distance between the heating element 2 in this area and the glass 5 to be heated, so as to achieve precise adjustment of the local radiation distance of the surface of the glass 5 to be heated.

[0035] The method of the utility model can realize precise control of the temperature of the glass 5 to be heated during the heating process by controlling the distance between the heating element 2 located at the top and the glass 5 to be heated, and adjusting the radiation distance of the heating element 2 to the glass 5 to be heated in real time. It is more sensitive and more effective than simply adjusting the local temperature of the glass by turning the furnace wire on and off in the past. For flat glass, it is easier to achieve the goal of uniform heating of the glass from top to bottom during heating. For special-shaped glass, it is convenient to achieve the goal of the final heating temperature of the curved part of the special-shaped glass being higher than that of other positions, and it can also realize precise control of the local temperature to meet the actual tempering needs.

[0036] It should be noted that although the utility model is described through the above embodiments, the utility model can also have other multiple embodiments. Without departing from the spirit and scope of the utility model, it is obvious that those skilled in the art can make various corresponding changes and deformations to the utility model, but these changes and deformations should all fall within the scope of protection of the attached claims of the utility model and their equivalents.

Claims

1. A glass heating device with adjustable radiation distance, comprising a furnace body (1), a ceramic roller (4) for conveying a glass (5) to be heated being provided inside the furnace body (1), an upper heating assembly and a lower heating assembly being provided above and below the ceramic roller (4), respectively, wherein: The upper heating assembly and the lower heating assembly each comprise a plurality of heating elements (2) arranged in sequence on the left and right sides, each heating element (2) being arranged inside the furnace body (1) via a fixing frame (3), a temperature measuring element (6) for detecting the temperature in the area controlled by the heating element (2) being arranged on the side of the fixing frame (3) close to the glass to be heated (5), and a driving unit (7) for driving the fixing frame (3) and the heating element (2) to be lifted and lowered is also connected to the side of the fixing frame (3) away from the glass to be heated (5), and the driving unit (7), the heating element (2) and the temperature measuring element (6) are all connected to a control mechanism (8), and the control mechanism (8) can control the driving unit (7) to lift and lower the heating element (2) through temperature feedback of the temperature measuring element (6), so as to achieve precise adjustment of the local radiation distance of the surface of the glass to be heated (5).

2. The glass heating device with adjustable radiation distance according to claim 1, characterized in that: The driving unit (7) is an electric push rod or a hydraulic cylinder.

3. The glass heating device with adjustable radiation distance according to claim 1, characterized in that: The plurality of heating elements (2) in the upper heating assembly and the lower heating assembly are arranged correspondingly up and down.

4. The glass heating device with adjustable radiation distance according to claim 1, characterized in that: The temperature measuring element (6) is arranged at the geometric center of the control area of ​​the corresponding heating element (2).

5. The glass heating device with adjustable radiation distance according to claim 1, characterized in that: The control mechanism (8) is arranged outside the furnace body (1).

6. The glass heating device with adjustable radiation distance according to claim 1, characterized in that: The control mechanism (8) is provided with a manual adjustment button.

7. The glass heating device with adjustable radiation distance according to claim 1, characterized in that: The multiple heating elements (2) are all arranged parallel to the conveying direction of the ceramic roller (4).

8. The glass heating device with adjustable radiation distance according to claim 1, characterized in that: The driving unit (7) is arranged outside the furnace body (1).

9. The glass heating device with adjustable radiation distance according to claim 1, characterized in that: The heating element (2) is adjusted up and down in a direction perpendicular to the surface of the ceramic roller (4).

10. The glass heating device with adjustable radiation distance according to claim 1, characterized in that: One end of the temperature measuring element (6) is fixed on the furnace body (1), and the other end extends into the furnace body (1) to a position close to the surface of the glass (5) to be heated, and the heights of the multiple temperature measuring elements (6) in the upper heating assembly from the surface of the glass (5) to be heated are consistent, and the heights of the multiple temperature measuring elements (6) in the lower heating assembly from the surface of the glass (5) to be heated are also consistent.

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