Laser bending equipment
Local heating of the glass through laser bending equipment solves the problem of long thermal bending time in the prior art, and achieves the effect of improving production efficiency.
Patent Information
- Application Number
- CN202420548148.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-03-18
AI Technical Summary
In the prior art, the time spent on thermal bending of glass is longer, resulting in lower production efficiency.
Using a laser bending device, the glass is heated to the first set temperature by heating the device, and then the local area of the glass is heated above the softening temperature by using a laser to avoid overall heating above the softening temperature.
Effectively reduces the time spent on thermal bending of glass and improves production efficiency.
Smart Images
Figure CN222631281U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of laser processing technology, and in particular to a laser bending device. Background Art
[0002] With the development of fingerprint recognition and facial recognition technology, glass is increasingly used in automotive panels, mobile phone panels and other fields. For visual beauty and improved operating comfort, major manufacturers are now beginning to heat-bend the original flat glass into curved glass.
[0003] The hot bending process generally involves placing glass of appropriate size on a mold with a curved surface. The glass and the mold are then placed in a heating furnace. The heating furnace heats the glass to a softening temperature so that the glass fits the curved surface on the mold. The glass is then annealed to complete the hot bending process.
[0004] In the related art, since the mold absorbs more heat, it takes a long time to heat the glass as a whole to a temperature above the softening point, which results in a longer bending time for the glass and lower production efficiency. Utility Model Content
[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a laser bending device that can effectively reduce the time required for thermal bending of glass.
[0006] According to the first aspect of the present application, a laser bending device includes:
[0007] A heating furnace comprises a furnace body and a heating device, wherein the furnace body is provided with a containing cavity, wherein the containing cavity is used to contain a workpiece; assuming that a first set temperature is lower than a softening temperature of the workpiece, the heating device is used to heat the workpiece in the containing cavity to the first set temperature;
[0008] The laser device is used to generate laser to heat the local area of the workpiece at the first set temperature; assuming that the second set temperature is greater than the softening temperature of the workpiece, the laser is used to heat the local area to the second set temperature.
[0009] The laser bending equipment according to the embodiment of the present application has at least the following beneficial effects: after the heating device heats the workpiece (such as glass, glass is used as an example below) in the accommodating cavity to a first set temperature, the laser heats a local area of the glass to a second set temperature; the first set temperature is lower than the softening temperature of the glass, and the second set temperature is higher than the softening temperature of the glass. The glass does not need to be heated as a whole to above the softening temperature, and only a local area of the glass needs to be heated to above the softening temperature, thereby effectively reducing the time required for thermal bending of the glass.
[0010] According to some embodiments of the present application, the heating furnace further includes:
[0011] A support seat, located in the accommodating cavity, connected to the furnace body, and used to support the workpiece;
[0012] A pressing block is located in the accommodating cavity, the pressing block is connected to the supporting seat, and the pressing block and the supporting seat are used to clamp or release the workpiece.
[0013] According to some embodiments of the present application, the heating device includes an electric heating tube.
[0014] According to some embodiments of the present application, the furnace body includes:
[0015] A main body, provided with a receiving groove, wherein the receiving groove is provided with an opening, and the opening is used for the workpiece to enter or leave the receiving groove;
[0016] A furnace door is connected to the main body, and is used to close the opening to form the accommodating cavity; the furnace door is also used to open the opening; the furnace door is provided with a first through hole, the first through hole is connected to the accommodating cavity, and the first through hole is used to pass the laser.
[0017] According to some embodiments of the present application, the furnace door is plug-fitted into the opening.
[0018] According to some embodiments of the present application, the first through hole is a rectangular hole.
[0019] According to some embodiments of the present application, the furnace door is further provided with a second through hole, the second through hole is communicated with the accommodating cavity, and the second through hole is used for passing infrared rays emitted by the workpiece.
[0020] According to some embodiments of the present application, the heating furnace further includes:
[0021] A sealing member is connected to the furnace door, and is used to close or open the first through hole, and is also used to close or open the second through hole.
[0022] According to some embodiments of the present application, it further includes:
[0023] The temperature detection device is used to detect the temperature of the workpiece in the accommodating cavity.
[0024] According to some embodiments of the present application, the laser device includes:
[0025] A laser, used to generate the laser;
[0026] The galvanometer is used to change the propagation direction of the laser emitted by the laser so that the laser irradiates the local area.
[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:
[0029] Figure 1 A cross-sectional view of a laser bending device according to a first embodiment of the present application;
[0030] Figure 2 for Figure 1 Front view of the laser device, pressing block and support seat of the laser bending equipment;
[0031] Figure 3 for Figure 1 A cross-sectional view of the main body of the furnace body of the laser bending equipment;
[0032] Figure 4 A three-dimensional diagram of a laser bending device according to a second embodiment of the present application;
[0033] Figure 5 for Figure 4 Cross-sectional view of the furnace body and seal of the laser bending machine.
[0034] Reference numerals: heating furnace 100, furnace body 110, main body 111, furnace door 112, heating device 120, accommodating cavity 131, first through hole 132, second through hole 133, accommodating groove 134, opening 135, pressing block 140, supporting seat 150, sealing member 160;
[0035] Laser device 200, laser 210, galvanometer 220;
[0036] Workpiece 300, glass 310, local area 311;
[0037] Temperature detection device 400. DETAILED DESCRIPTION
[0038] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0039] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0040] In the description of this application, "several" means one or more than one, "more" means two or more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0041] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.
[0042] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0043] It should be noted that the workpiece 300 bent by the laser bending device in the following embodiment is glass 310, but the workpiece 300 bent by the laser bending device in the embodiment of the present application is not limited to glass 310. For example, the workpiece 300 may also be a plastic plate, a steel plate, etc.
[0044] Reference Figure 1 and Figure 2 According to the laser bending device of the first embodiment of the present application, the laser bending device comprises a heating furnace 100 and a laser device 200. The heating furnace 100 comprises a furnace body 110 and a heating device 120. The furnace body 110 is provided with a receiving cavity 131, and the receiving cavity 131 is used to receive the glass 310. Assuming that the first set temperature is lower than the softening temperature of the glass 310, the heating device 120 is used to heat the glass 310 in the receiving cavity 131 to the first set temperature.
[0045] The laser device 200 is used to generate laser light to heat the local area 311 of the glass 310 at the first set temperature. If the second set temperature is greater than the softening temperature of the glass 310, the laser light is used to heat the local area 311 to the second set temperature.
[0046] The laser bending equipment according to the embodiment of the present application has at least the following beneficial effects: after the heating device 120 heats the glass 310 in the accommodating cavity 131 to a first set temperature, the laser heats a local area 311 of the glass 310 to a second set temperature; the first set temperature is lower than the softening temperature of the glass 310, and the second set temperature is higher than the softening temperature of the glass 310. The glass 310 does not need to be heated as a whole to above the softening temperature, and only the local area 311 of the glass 310 needs to be heated to above the softening temperature, thereby effectively reducing the time taken for thermal bending of the glass 310.
[0047] Specifically, the specific values of the first set temperature and the second set temperature need to be determined according to the specific type of glass 310. For example, when glass 310 is ordinary glass (silicate glass), the softening temperature of ordinary glass (silicate glass) is 700-800 degrees Celsius, then the first set temperature may be 650 degrees Celsius, and the second set temperature may be 750 degrees Celsius. For another example, when glass 310 is tempered glass, the softening temperature of tempered glass is 600-650 degrees Celsius, then the first set temperature may be 550 degrees Celsius, and the second set temperature may be 625 degrees Celsius.
[0048] It should be noted that the heating device 120 heats the glass 310 to the first set temperature, which can reduce the time for the laser to heat the local area 311 of the glass 310 to the second set temperature. In addition, when the first set temperature is greater than the strain point temperature of the glass 310, heating the glass 310 to the first set temperature can also effectively eliminate the internal stress of the glass 310, thereby reducing the probability of the glass 310 breaking when bending.
[0049] Reference Figure 1 and Figure 2 In some embodiments of the present application, the heating furnace 100 further includes a support seat 150 and a pressing block 140. The support seat 150 is located in the accommodating cavity 131, the support seat 150 is connected to the furnace body 110, and the support seat 150 is used to support the glass 310. The pressing block 140 is located in the accommodating cavity 131, the pressing block 140 is connected to the support seat 150, and the pressing block 140 and the support seat 150 are used to clamp or release the glass 310.
[0050] Clamping the glass 310 by the pressing block 140 and the supporting seat 150 is conducive to maintaining a stable position of the glass 310 in the accommodating cavity 131, which is conducive to accurately heating the local area 311 of the glass 310 by the laser, and the dimensional accuracy of the bending position is better.
[0051] Specifically, the pressing block 140 may be rotatably connected to the support base 150, or the pressing block 140 may be connected to the support base 150 via a fastener. The support base 150 may be fixedly connected to the furnace body 110, for example, fixedly connected via a fastener.
[0052] Reference Figure 1 In some embodiments of the present application, the heating device 120 includes an electric heating tube.
[0053] The working power and heating time of the electric heating tube are both controllable, which is helpful to accurately heat the glass 310 to the first set temperature.
[0054] In another embodiment, the heating device 120 may also be an electromagnetic induction device.
[0055] Reference Figure 1 and Figure 3 In some embodiments of the present application, the furnace body 110 includes a main body 111 and a furnace door 112. The main body 111 is provided with a receiving groove 134, and the receiving groove 134 is provided with an opening 135, and the opening 135 is used for the glass 310 to enter or leave the receiving groove 134. The furnace door 112 is connected to the main body 111, and the furnace door 112 is used to close the opening 135 to form the receiving cavity 131; the furnace door 112 is also used to open the opening 135. The furnace door 112 is provided with a first through hole 132, and the first through hole 132 is connected to the receiving cavity 131, and the first through hole 132 is used to pass the laser.
[0056] Closing the opening 135 by the furnace door is beneficial to reducing heat loss in the accommodating cavity 131, thereby facilitating rapid heating of the glass 310. The first through hole 132 allows the laser to pass through, and when the furnace door closes the opening 135, the laser can also heat the local area 311 of the glass 310 normally.
[0057] Reference Figure 1 In some embodiments of the present application, the oven door 112 is plugged into and matched with the opening 135 .
[0058] After the furnace door 112 is pulled out from the opening 135 , the opening 135 can be opened. After the furnace door 112 is inserted into the opening 135 , the opening 135 can be closed. The furnace door 112 has a simple structure, which is beneficial to reducing the production cost of the furnace body 110 .
[0059] In another embodiment, the oven door 112 may be rotatably connected to the main body 111 (this may be achieved by a hinge).
[0060] Reference Figure 4 In some embodiments of the present application, the first through hole 132 is a rectangular hole.
[0061] After the first through hole 132 is set as a rectangular hole, the laser spot is along the length direction of the rectangular hole (refer to Figure 4 , for example, the length direction of the rectangular hole is the front-to-back direction) and after moving back and forth, a linear heating area can be formed on the glass 310, thereby making the bending position of the glass 310 linear.
[0062] In other embodiments, the first through hole 132 may also be in the shape of a circular hole, an elliptical hole, etc.
[0063] Reference Figure 4 In some embodiments of the present application, the furnace door 112 is further provided with a second through hole 133 , the second through hole 133 is communicated with the accommodating cavity 131 , and the second through hole 133 is used for passing infrared rays emitted by the glass 310 .
[0064] After the furnace door 112 is provided with the second through hole 133 , it is advantageous to detect the temperature of the glass 310 by an infrared thermometer outside the accommodating cavity 131 , thereby facilitating accurate control of the heating temperature of the glass 310 .
[0065] Reference Figure 5 In an improved solution of the above embodiment, the heating furnace 100 further includes a seal 160 , which is connected to the furnace door 112 , and is used to close or open the first through hole 132 , and is also used to close or open the second through hole 133 .
[0066] When the heating device 120 heats the glass 310 , closing the first through hole 132 and the second through hole 133 helps to reduce heat loss of the glass 310 , thereby facilitating rapid heating of the glass 310 to a desired temperature.
[0067] It should be noted that, when the heating device 120 heats the glass 310 , the sealing member 160 may open the second through hole 133 multiple times at intervals, thereby facilitating the infrared thermometer to detect the temperature of the glass 310 .
[0068] Reference Figure 4 In some embodiments of the present application, the laser bending equipment further includes a temperature detection device 400 , and the temperature detection device 400 is used to detect the temperature of the glass 310 in the accommodating cavity 131 .
[0069] By detecting the temperature of the glass 310 in the accommodating cavity 131 , it is helpful to monitor the temperature of the glass 310 in real time, thereby facilitating controlling the temperature of the glass 310 within a desired range.
[0070] Specifically, the temperature detection device 400 may be an infrared thermometer or a thermistor.
[0071] Refer to him Figure 4In some embodiments of the present application, the laser device 200 includes a laser 210 and a galvanometer 220. The laser 210 is used to generate laser light. The galvanometer 220 is used to change the propagation direction of the laser light emitted by the laser 210 so that the laser light is irradiated on a local area 311.
[0072] Changing the propagation direction of the laser emitted by the laser 210 by the galvanometer 220 is beneficial for accurately heating the required local area 311 , and the heating position has a higher accuracy.
[0073] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
Claims
1. Laser bending equipment, characterized in that, include: A heating furnace comprises a furnace body and a heating device, wherein the furnace body is provided with a containing cavity, wherein the containing cavity is used to contain a workpiece; assuming that a first set temperature is lower than a softening temperature of the workpiece, the heating device is used to heat the workpiece in the containing cavity to the first set temperature; The laser device is used to generate laser to heat the local area of the workpiece at the first set temperature; assuming that the second set temperature is greater than the softening temperature of the workpiece, the laser is used to heat the local area to the second set temperature.
2. The laser bending equipment according to claim 1, characterized in that: The heating furnace also includes: A support seat, located in the accommodating cavity, connected to the furnace body, and used to support the workpiece; A pressing block is located in the accommodating cavity, the pressing block is connected to the supporting seat, and the pressing block and the supporting seat are used to clamp or release the workpiece.
3. The laser bending equipment according to claim 1, characterized in that: The heating device comprises an electric heating tube.
4. The laser bending equipment according to claim 1, characterized in that: The furnace body comprises: A main body, provided with a receiving groove, wherein the receiving groove is provided with an opening, and the opening is used for the workpiece to enter or leave the receiving groove; A furnace door is connected to the main body, and is used to close the opening to form the accommodating cavity; the furnace door is also used to open the opening; the furnace door is provided with a first through hole, the first through hole is connected to the accommodating cavity, and the first through hole is used to pass the laser.
5. The laser bending equipment according to claim 4, characterized in that: The furnace door is plug-fitted with the opening.
6. The laser bending equipment according to claim 4, characterized in that: The first through hole is a rectangular hole.
7. The laser bending equipment according to claim 4, characterized in that: The furnace door is further provided with a second through hole, the second through hole is communicated with the accommodating cavity, and the second through hole is used for passing infrared rays emitted by the workpiece.
8. The laser bending equipment according to claim 7, characterized in that: The heating furnace also includes: A sealing member is connected to the furnace door, and is used to close or open the first through hole, and is also used to close or open the second through hole.
9. The laser bending equipment according to any one of claims 1 to 7, characterized in that: Also includes: The temperature detection device is used to detect the temperature of the workpiece in the accommodating cavity.
10. The laser bending equipment according to any one of claims 1 to 7, characterized in that: The laser device comprises: A laser, used to generate the laser; The galvanometer is used to change the propagation direction of the laser emitted by the laser so that the laser irradiates the local area.