Apparatus and method for directional heating in a glass processing operation

Abstract

The application relates to the field of glass processing, and particularly discloses an equipment and a method for directional heating in a glass processing process, which comprises a self-weight forming frame and a functional support rod; a cross rod is arranged on the functional support rod, a heat insulation cloth is sleeved on one of the cross rods and naturally falls down under the action of gravity, and the tail end is sleeved on another cross rod after being bent in a direction away from the self-weight forming frame to form a U-shaped heat insulation space; one side of the heat insulation cloth facing the heat supplement assembly is provided with an opening, and heat is radiated into the heat insulation space through the opening; the scheme forms a heat insulation space, can form a better heat insulation structure, can avoid that the heat insulation cloth directly covers the heating wire, slows down aging of the heat insulation cloth, and because the heat insulation cloth is bent and formed and is semi-closed, when glass fibers inside the heat insulation cloth fall off, the glass fibers only fall off at the bottom of the bending part and cannot directly fall off on the bus glass.

Description

Technical Field

[0001] This invention relates to the field of glass processing technology, specifically to a device and method for directional heating during glass processing. Background Technology

[0002] The laminated windshield glass of buses is a core safety component of automobiles. It is characterized by its large area, high center of gravity, deep arch, and complex curved surface structure. Its forming precision, curvature uniformity, and optical performance directly determine the overall vehicle assembly precision, driving visibility, and vehicle operation safety. Therefore, it has extremely high requirements for the precision and stability of the forming process and processing equipment. At present, the mainstream forming process for bus windshields in the industry is the self-weight hot bending forming process. The specific processing flow is as follows: the flat glass to be processed is placed on the surface of the self-weight forming mold and sent into the heating furnace for heating treatment. After the glass gradually softens due to heat, it relies on its own gravity to make the periphery of the glass conform to the forming surface of the mold, while the central area of ​​the glass hangs freely and extends, finally forming a curved glass structure that meets the design requirements.

[0003] The existing self-weight hot bending forming process has many inherent technical defects in actual production applications. Under the conventional overall heating mode of the heating furnace, the glass center spherical surface and side curvature are generally under-formed and the curvature does not meet the standard, resulting in a low product forming qualification rate. In order to solve the defect of under-formation in special areas, the current production generally adopts the compensation method of extending the heating time in the furnace, thereby improving the overall softening degree of the glass to meet the forming size requirements of large curvature areas.

[0004] However, this remedial process has obvious drawbacks. Excessive heating time will cause the glass to be overheated, resulting in uneven internal stress distribution and abnormal surface flatness, which in turn will produce quality defects such as optical deformation and optical distortion, seriously damaging the optical performance of the glass and failing to meet the product's performance standards. At the same time, it will significantly reduce the product yield rate, and the batch production quality stability and consistency are extremely poor, which is not conducive to large-scale standardized production.

[0005] In summary, existing hot bending forming equipment and processes for bus windshields have many technical shortcomings, such as poor forming accuracy and substandard product optical performance, making it difficult to meet the large-scale production needs of high-quality, high-precision laminated bus windshields. Therefore, it is necessary to develop a new type of automotive windshield processing equipment to solve the above-mentioned defects in existing technologies. Summary of the Invention

[0006] The purpose of this invention is to provide a device and method for directional heating during glass processing, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a device for directional heating during glass processing, comprising a self-weight forming frame and a functional support rod, wherein the functional support rod is disposed around the self-weight forming frame; the functional support rod is provided with a heat-replenishing component for heat replenishing the glass edge and a heat-insulating cloth for heat insulation of the non-glass edge;

[0008] The functional support rod is provided with a crossbar. The front end of the heat insulation cloth is sleeved on one of the crossbars. The heat insulation cloth hangs down naturally under its own weight. The end is bent away from the self-weight forming frame to form a "U"-shaped heat insulation space and then sleeved on another crossbar.

[0009] The heat insulation fabric has an opening on the side facing the heat replenishment component, through which heat is radiated into the heat insulation space.

[0010] Preferably, the heating assembly includes a heating wire and a quartz tube, the heating wire being sleeved on the surface of the quartz tube, and both ends of the quartz tube being disposed on the functional support rod.

[0011] Preferably, the functional support rod is provided with a sliding rod, a bearing rod is connected to the sliding rod, and a groove that cooperates with the sliding rod is opened in the functional support rod;

[0012] The crossbar and the quartz tube are connected to the functional support rod via the load-bearing rod.

[0013] Preferably, the front and rear ends of the heat insulation fabric are connected to each other.

[0014] Preferably, the heat insulation fabric is movable around the crossbar.

[0015] Preferably, a self-weight rod is provided at the bottom of the heat insulation space. The self-weight rod is cylindrical, and limit sleeves are connected to both ends of the self-weight rod to restrict its lateral movement.

[0016] Preferably, the self-weight rod comprises two separate halves;

[0017] The limiting sleeve is fitted onto both ends of the two halves to prevent the two halves from separating;

[0018] The limiting sleeve has a locking groove.

[0019] Preferably, the front and rear ends of the heat insulation cloth are respectively disposed between the two halves of the body;

[0020] The edge of the heat insulation cloth is held in place by the locking groove on the limiting sleeve.

[0021] Preferably, the limiting sleeve is provided with a receiving plate, the receiving plate including a flat plate and an inclined plate, the flat plate and the inclined plate being integrally formed, and the inclined plate facing the side of the heat insulation cloth that is away from the heat supplementing component.

[0022] A method for using a device for directional heating in glass processing includes the following steps:

[0023] Step 1: First, place the glass to be processed onto the self-weight forming frame, then place the heating wire onto the functional support rod, and then let the heat insulation cloth be put on the crossbar so that the crossbar supports the heat insulation cloth and forms a heat insulation space.

[0024] Step 2: Cut off a portion of the heat insulation cloth facing the heating wire to expose an opening, allowing part of the heating wire to face the heat insulation space. At this time, the bottom of the heat insulation cloth can catch the fibers that fall off during the heat insulation process.

[0025] Step 3: Install a self-weight bar at the bottom of the insulation cloth to lower the overall center of gravity and prevent the insulation cloth from floating and swaying at the bottom;

[0026] Step 4: Turn on the power. The heating wire will heat the glass edge, and the non-glass edge will be insulated with heat insulation cloth to facilitate the bending and shaping of the glass edge.

[0027] The present invention has at least the following beneficial effects:

[0028] 1. By forming a heat insulation space, a better heat insulation structure can be formed. At the same time, it can also prevent the heat insulation cloth from directly covering the heating wire, slowing down the aging of the heat insulation cloth. Moreover, because the heat insulation cloth is bent and semi-enclosed, when the glass fiber on the inside of the heat insulation cloth falls, it will only fall at the bottom of the bend, and will not fall directly onto the bus glass.

[0029] 2. This solution uses a sliding support rod to adjust the height of one side of the crossbar, thereby allowing the insulation cloth to form an adjustable inclined covering surface for the heating wire as needed, resulting in more precise insulation and improved heating accuracy.

[0030] 3. When the two ends of the heat insulation cloth are connected and fitted onto the crossbar, it can be adjusted as needed. When a part of one side is heated and turns black and ages, simply pull the heat insulation cloth to rotate it, and the heated part can be replaced. Then, an appropriate re-opening can be made. If the two ends are not connected, it can be done by rolling up the crossbar.

[0031] 4. The self-weight rod can straighten the heat insulation cloth, preventing the bottom of the heat insulation cloth from being suspended and floating, thus improving the insulation effect on the bottom. Further improvements allow the two ends of the heat insulation cloth to be clamped by the half-body and the limiting sleeve. This makes it convenient to connect the two ends of the heat insulation cloth and also convenient to disassemble. The heat insulation cloth that can be easily disassembled can be flipped over to exchange the inside and outside sides and continue to be used without replacing the heat insulation cloth.

[0032] 5. The included receiving tray solves the problem of fiber shedding due to aging on the back of the heat-exposed part of the insulation cloth. It catches the fibers on this side, preventing them from falling directly onto the bus glass. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall three-dimensional structure of Embodiment 1 of the present invention;

[0034] Figure 2 This is a side view of an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the three-dimensional structure connecting the functional support rod and the load-bearing rod according to Embodiment 3 of the present invention;

[0036] Figure 4 This is a schematic diagram of the heat insulation cloth structure on the left and right sides of Embodiment 2 of the present invention, showing the structure after height adjustment and before height adjustment, respectively.

[0037] Figure 5 This is a three-dimensional structural diagram of the connection between the heat insulation cloth and the quartz tube in Embodiment 2 of the present invention;

[0038] Figure 6 This is a schematic diagram of the heat insulation cloth structure on the left and right sides of Embodiment 4 of the present invention, showing the structure after height adjustment and before height adjustment, respectively.

[0039] Figure 7 This is a three-dimensional structural diagram of the connection between the heat insulation cloth and the quartz tube in Embodiment 4 of the present invention;

[0040] Figure 8 This is a schematic diagram of the three-dimensional connection structure of the self-weight rod and the heat insulation cloth in Embodiment 5 of the present invention;

[0041] Figure 9 This is a schematic diagram of the three-dimensional connection structure of the self-weight rod and the limiting sleeve in Embodiment 5 of the present invention;

[0042] Figure 10 This is a schematic diagram of the three-dimensional connection structure of the limiting sleeve and the half-body in Embodiment Six of the present invention;

[0043] Figure 11 This is a schematic diagram of one of the front connection structures of the heat insulation cloth and the limiting sleeve in Embodiment Six of the present invention;

[0044] Figure 12 This is a schematic diagram of another front connection structure between the heat insulation cloth and the limiting sleeve in Embodiment 6 of the present invention;

[0045] Figure 13 This is a schematic diagram of the three-dimensional connection structure of the receiving plate and the limiting sleeve in Embodiment 7 of the present invention.

[0046] In the diagram: 1. Self-weight forming frame; 2. Functional support rod; 201. Bearing rod; 202. Sliding rod; 3. Heat insulation cloth; 4. Crossbar; 5. Heating wire; 6. Quartz tube; 7. Self-weight rod; 701. Half body; 8. Limiting sleeve; 801. Locking groove; 9. Receiving plate. Detailed Implementation

[0047] 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.

[0048] Example 1

[0049] Please see Figures 1-2 A device for directional heating during glass processing includes a self-weight forming frame 1 and a functional support rod 2, the functional support rod 2 being disposed around the self-weight forming frame 1; the functional support rod 2 is provided with a heating component for heating the glass edge and a heat insulation cloth 3 for insulating the non-glass edge; the heating component includes a heating wire 5 and a quartz tube 6, the heating wire 5 being sleeved on the surface of the quartz tube 6, and both ends of the quartz tube 6 being disposed on the functional support rod 2;

[0050] Specifically, when in use, the bottom of the self-weight forming frame 1 is equipped with heating equipment and refractory bricks are laid around it. The heating equipment and heat-replenishing components can be heating wire 5 or infrared radiation heating plate, laser irradiation heating, etc.

[0051] The heat insulation cloth 3 can be made of glass fiber, or it can be made of silicon titanium fireproof cloth, aluminum foil composite glass fiber cloth, graphite coated glass fiber cloth, ceramic fiber, etc.

[0052] The glass plate is placed on the self-weight forming frame 1, and the heating equipment is turned on. The glass begins to soften when heated and begins to fall and bend under its own weight. At the same time, the heating component is also heated simultaneously to help the edges of the glass to be heated better. The heating component and the middle of the glass are provided with heat insulation cloth 3 to isolate the heat diffused by the heating component and prevent the middle of the glass from being affected by the heat.

[0053] Example 2

[0054] Please see Figure 4 and Figure 5 This embodiment is an improvement on the first embodiment. A device for directional heating during glass processing also includes a crossbar 4 on a functional support rod 2. The front end of the heat insulation cloth 3 is sleeved on a crossbar 4. The heat insulation cloth 3 hangs down naturally under its own weight. The end is bent in a direction away from the self-weight forming frame 1 to form a "U"-shaped heat insulation space and then sleeved on another crossbar 4.

[0055] The side of the insulation cloth 3 facing the heat-replenishing component has an opening, through which heat is radiated into the insulation space.

[0056] Specifically, this solution uses a unique structure to prevent the heat insulation cloth 3 from directly covering the heat-replenishing components, instead forming a heat insulation space. This avoids direct heat conduction, improving the heat insulation effect, and also avoids direct damage to the heat insulation cloth 3, extending its service life. Most importantly, the structure formed at the bottom of the heat insulation cloth 3 can also catch glass fibers that fall due to high temperatures, essentially forming a catch bag underneath, preventing the falling glass fibers from landing on softened glass and causing product failure.

[0057] Example 3

[0058] Please see Figure 3 This embodiment is an improvement on embodiment two. A device for directional heating in glass processing also includes a sliding rod 202 on a functional support rod 2, a bearing rod 201 connected to the sliding rod 202, and a groove that cooperates with the sliding rod 202 in the functional support rod 2.

[0059] The crossbar 4 and the quartz tube 6 are connected to the functional support bar 2 via the bearing bar 201;

[0060] The sliding rod 202 has several holes and is locked by metal pins or bolts;

[0061] Specifically, the height of the heat insulation cloth 3 on the side of the heat-replenishing component can be adjusted by the height-adjustable sliding rod 202, thereby adjusting the tilt angle and tilt area of ​​the heat insulation cloth 3 covering the heat-replenishing component, thus creating a certain insulation effect on the top of the heat-replenishing component.

[0062] Example 4

[0063] Please see Figure 6 and Figure 7 This embodiment is an improvement on embodiment two. It is a device for directional heating in glass processing, and also includes a heat insulation cloth 3 with its front and rear ends connected to each other; the heat insulation cloth 3 can move around the crossbar 4.

[0064] Specifically, when the two ends of the heat insulation cloth 3 are connected and fitted onto the crossbar 4, it can be adjusted as needed. When a part of one side is heated and turns black and ages, simply pull the heat insulation cloth 3 to rotate it, and the heated part can be replaced. Then, an appropriate re-opening can be made. If the two ends are not connected, they can be connected by rolling up the crossbar 4. When connecting, the two ends can also be stapled together, and the heat insulation cloth 3 can be rolled onto the crossbar 4.

[0065] Example 5

[0066] Please see Figure 8 and Figure 9 This embodiment is an improvement on embodiment two. It is a device for directional heating in glass processing, and also includes a self-weight rod 7 at the bottom of the heat insulation space. The self-weight rod 7 is cylindrical, and the two ends of the self-weight rod 7 are connected to limit sleeves 8 to restrict the lateral movement of the self-weight rod 7.

[0067] Specifically, the self-weight rod 7 is made of metal or ceramic. The self-weight rod 7 can straighten the heat insulation cloth 3, preventing the bottom of the heat insulation cloth 3 from being suspended and floating, thus improving the insulation effect on the bottom. Further improvements are made so that the two ends of the heat insulation cloth 3 are clamped by the half-body 701 and the limiting sleeve 8. This makes it convenient to connect the two ends of the heat insulation cloth 3 and also convenient to disassemble. The heat insulation cloth 3 can be flipped over so that the inside and outside are interchanged and it can continue to be used without replacing the heat insulation cloth 3.

[0068] Example 6

[0069] Please see Figures 10-12 This embodiment differs from Embodiment 4. A device for directional heating during glass processing also includes a self-weight rod 7 comprising two separate halves 701.

[0070] The limiting sleeve 8 is set at both ends of the two halves 701 to prevent the two halves 701 from separating.

[0071] The limiting sleeve 8 has a locking groove 801.

[0072] The front and rear ends of the heat insulation cloth 3 are respectively set between the two halves of the body 701;

[0073] The edge of the heat insulation cloth 3 is clamped on the limiting sleeve 8 by the locking groove 801;

[0074] Specifically, in this embodiment, the two ends of the heat insulation cloth 3 are locked by the locking groove 801 and the two halves 701, and the displacement of the heat insulation cloth 3 is restricted by the self-weight rod 7.

[0075] In this embodiment, two types of locking grooves 801 are listed: one is to allow the edge of the heat insulation cloth 3 to be inserted directly into it, and the other is to allow the inserted edge to be bent.

[0076] In use, the two ends of the heat insulation cloth 3 are sandwiched between the two halves 701, and the limiting sleeve 8 is fitted on both ends of the two halves 701 to limit the two halves 701 and lock the edge of the heat insulation cloth 3. Through the unique structure and friction, the two ends of the heat insulation cloth 3 are connected.

[0077] Example 7

[0078] Please see Figure 13This embodiment is an improvement on embodiment two. It is a device for directional heating in glass processing, and also includes a receiving plate 9 provided on the limiting sleeve 8. The receiving plate 9 includes a flat plate and an inclined plate, which are integrally formed. The inclined plate faces the side of the heat insulation cloth 3 that is away from the heat supplementing component.

[0079] Specifically, the receiving plate 9 solves the problem of fiber loss due to aging on the back of the heat-insulating cloth 3, by catching the fibers on that side and preventing them from falling directly onto the bus glass.

[0080] A method for using a device for directional heating in glass processing includes the following steps:

[0081] Step 1: First, place the glass to be processed on the self-weight forming frame 1, then place the heating wire 5 on the functional support rod 2, and then let the heat insulation cloth 3 be put on the crossbar 4 so that the crossbar 4 can support the heat insulation cloth 3 and form a heat insulation space.

[0082] Step 2: Cut off a portion of the side of the heat insulation cloth 3 facing the heating wire 5 to expose an opening, so that part of the heating wire 5 faces the heat insulation space. At this time, the bottom of the heat insulation cloth 3 can catch the fibers that fall off the heat insulation cloth 3 during baking.

[0083] Step 3: Install a self-weight rod 7 at the bottom of the insulation cloth 3 to lower the overall center of gravity and prevent the bottom of the insulation cloth 3 from floating and swaying.

[0084] Step 4: Power on, heating wire 5 provides supplemental heat to the glass edge, and heat insulation cloth 3 insulates the non-glass edge to facilitate bending and shaping of the glass edge.

[0085] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0086] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A device for directional heating during glass processing, comprising: a self-weight forming frame (1) and a functional support rod (2), the functional support rod (2) being disposed around the self-weight forming frame (1); Its features are: The functional support rod (2) is provided with a heat-replenishing component for heat-replenishing the glass edge and a heat-insulating cloth (3) for heat-insulating the non-glass edge. A crossbar (4) is provided on the functional support rod (2). The front end of the heat insulation cloth (3) is sleeved on one of the crossbars (4). The heat insulation cloth (3) hangs down naturally under its own weight. The end is bent in a direction away from the self-weight forming frame (1) to form a "U"-shaped heat insulation space and then sleeved on another crossbar (4). The heat insulation cloth (3) has an opening on the side facing the heat replenishment component, and heat is radiated into the heat insulation space through the opening.

2. The device for directional heating in glass processing according to claim 1, characterized in that: The heating assembly includes a heating wire (5) and a quartz tube (6). The heating wire (5) is sleeved on the surface of the quartz tube (6), and the two ends of the quartz tube (6) are set on the functional support rod (2).

3. The device for directional heating in glass processing according to claim 1, characterized in that: The functional support rod (2) is provided with a sliding rod (202), and a bearing rod (201) is connected to the sliding rod (202). The functional support rod (2) is provided with a sliding groove that cooperates with the sliding rod (202). The crossbar (4) and the quartz tube (6) are connected to the functional support rod (2) by the bearing rod (201).

4. The device for directional heating in glass processing according to claim 1, characterized in that: The front and rear ends of the heat insulation cloth (3) are connected to each other.

5. The device for directional heating in glass processing according to claim 4, characterized in that: The heat insulation cloth (3) can move around the crossbar (4).

6. The device for directional heating in glass processing according to claim 4, characterized in that: The bottom of the heat insulation space is provided with a self-weight rod (7), which is cylindrical. Both ends of the self-weight rod (7) are connected to limit sleeves (8) to restrict the lateral movement of the self-weight rod (7).

7. The device for directional heating in glass processing according to claim 6, characterized in that: The self-weight rod (7) comprises two separate halves (701). The limiting sleeve (8) is fitted onto both ends of the two halves (701) to prevent the two halves (701) from separating; The limiting sleeve (8) is provided with a locking groove (801).

8. The device for directional heating in glass processing according to claim 7, characterized in that: The front and rear ends of the heat insulation cloth (3) are respectively disposed between the two halves (701); The edge of the heat insulation cloth (3) is held in place on the limiting sleeve (8) by the locking groove (801).

9. A device for directional heating in glass processing according to claim 6 or 8, characterized in that: The limiting sleeve (8) is provided with a receiving plate (9), which includes a flat plate and an inclined plate. The flat plate and the inclined plate are integrally formed, and the inclined plate faces the side of the heat insulation cloth (3) that is away from the heat supplementing component.

10. The method of using the directional heating device in glass processing according to claim 9, characterized in that, It includes the following steps: Step 1: First, place the glass to be processed on the self-weight forming frame (1), then place the heating wire (5) on the functional support rod (2), and then let the heat insulation cloth (3) be put on the crossbar (4) so ​​that the crossbar (4) can support the heat insulation cloth (3) and form a heat insulation space. Step 2: Cut off part of the side of the heat insulation cloth (3) facing the heating wire (5) to expose the opening, so that part of the heating wire (5) faces the heat insulation space. At this time, the bottom of the heat insulation cloth (3) can catch the fibers that fall off the heat insulation cloth (3) during baking. Step 3: Set a self-weight rod (7) at the bottom of the heat insulation cloth (3) to lower the overall center of gravity and prevent the bottom of the heat insulation cloth (3) from swaying. Step 4: Power on, heating wire (5) heats the glass edge, and heat insulation cloth (3) insulates the non-glass edge to facilitate glass edge bending and shaping.

Images