Hot bending device for low-melting-point silicon oxide free-form surface mirror

Abstract

The utility model relates to the technical field of hot bending of free-form surface mirrors, in particular to a hot bending device of a low-melting-point silicon oxide free-form surface mirror, which comprises a heating box, and a vacuum pump connector and an exhaust valve connector are arranged at the top of the heating box. A heating assembly is arranged in the heating box, a channel for products to enter and exit is formed in the position, under the heating assembly, of the bottom of the heating box, the products are arranged on a ceramic flat plate, the size of the ceramic flat plate is the same as that of the channel, and the ceramic flat plate is driven by a telescopic air cylinder. According to the utility model, the heating box can be vacuumized, so that the heat transfer efficiency in a vacuum state is low, and the damage to the inner wall of the heating box can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal bending of free-form surface mirrors, in particular to a thermal bending device for a low-melting-point silicon oxide free-form surface mirror. Background Art

[0002] Low-melting-point silicon oxide hot bending technology is widely used in different scenes such as fish tanks, balconies, mobile phone counters, cosmetics counters, TV cabinets, ceilings, curtain walls, etc.; free-form mirrors are mainly used in the aviation and automotive fields, and can project the internal information of the equipment onto the corresponding imaging glass; they are used to avoid safety hazards caused by the diversion of vision when the equipment operator is driving or operating.

[0003] The existing free-form mirror thermal bending adopts the method of direct heating of air and thermal radiation (similar to an oven). Although this method can complete the thermal bending of the free-form mirror, the temperature of the inner wall of the device must also withstand the same temperature, which is easy to damage the inner wall of the device and reduce the service life of the device. Devices with good heat resistance of the inner wall are expensive and costly. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a thermal bending device for a low-melting-point silicon oxide free-form mirror, which can evacuate the inside of a heating box to reduce the efficiency of heat transfer in a vacuum state, thereby reducing damage to the inner wall of the heating box.

[0005] The utility model is implemented by the following technical scheme: a hot bending device for a low-melting-point silicon oxide free-form surface mirror, comprising a heating box, the top of which is provided with a vacuum pump interface and an exhaust valve interface; a heating component is arranged in the heating box, the bottom of the heating box is located directly below the heating component and is provided with a channel for product entry and exit, the product is arranged on a ceramic flat plate, the size of the ceramic flat plate is the same as the size of the channel, and the ceramic flat plate is driven by a telescopic cylinder.

[0006] Preferably, the heating assembly includes a heating plate with a placement cavity, a heating tube is arranged in the placement cavity, both ends of the heating tube penetrate the heating box and are respectively connected to the positive and negative poles of the power supply; the four corners of the bottom of the heating plate are connected to the inner bottom surface of the heating box through the first ceramic support column; the outer peripheral side of the heating plate is wrapped with the first thermal insulation cotton, the bottom of the first thermal insulation cotton has a placement groove connected to the bottom of the heating plate, the size of the placement groove is the same as the size of the channel, and a cover bin is arranged on the outside of the first thermal insulation cotton.

[0007] Preferably, a mounting plate is provided below the heating box, and the four corners of the top of the mounting plate are connected to the bottom of the heating box via connecting rods; the telescopic cylinder is installed at the bottom of the mounting plate, and the push rod of the telescopic cylinder penetrates the mounting plate and is connected to a support plate, and the bottom of the ceramic flat plate is connected to the support plate via a plurality of second ceramic support columns; a second heat insulation cotton is provided between the ceramic flat plate and the support plate;

[0008] A ceramic concave mold is placed on the top of the ceramic flat plate, and the top of the ceramic concave mold is sealed via a ceramic cover plate.

[0009] Preferably, a guide assembly is provided on the mounting plate, and the guide assembly includes a first fixed plate fixed on the mounting plate, the push rod of the telescopic cylinder penetrates the first fixed plate and is connected to the support plate via the second fixed plate, guide shafts are fixed to the four corners of the bottom of the second fixed plate, and the lower end of the guide shaft penetrates the first fixed plate and the mounting plate and is connected to the first fixed plate and the mounting plate via a linear bearing.

[0010] Preferably, a sealing ring is provided on the support plate.

[0011] Preferably, a cooling main pipe is provided in the heating box at the top of the cover bin, and both ends of the cooling main pipe penetrate the heating box and serve as a water inlet and a water outlet respectively.

[0012] Preferably, first temperature sensors are installed on both the left and right sides of the cover bin in the heating box; and two second temperature sensors for respectively detecting the upper and lower inner walls of the placement cavity are installed on the heating plate.

[0013] Preferably, the top of the heating box has an interface for the output lines of the first temperature sensor and the second temperature sensor.

[0014] Preferably, a cooling plate is provided at the bottom of the first thermal insulation cotton, and an opening corresponding to the channel is provided at the bottom of the cooling plate; a cooling cavity is provided in the cooling plate, and the cooling cavity is connected to the cooling main pipe via a cooling auxiliary pipe.

[0015] Beneficial effects of the utility model:

[0016] (1) The utility model provides an embodiment, wherein the top of the heating box has a vacuum pump interface and an exhaust valve interface, the vacuum pump interface is used to connect the vacuum pump, and the heating box can be evacuated by the vacuum pump, so that the efficiency of heat transfer in a vacuum state is low, so that during the hot bending of the product, the damage to the inner wall of the heating box is reduced; the exhaust valve interface is used to connect the exhaust valve, so that air is introduced to break the vacuum after the hot bending is completed; the product can be hot bent by the heating assembly; the ceramic plate can be driven up and down by the telescopic cylinder, thereby driving the product up and down, which is convenient for subsequent hot bending of the product; the outer peripheral side of the heating plate is wrapped with a first thermal insulation cotton to reduce heat loss; the second thermal insulation cotton can reduce heat loss when the product is hot bent.

[0017] (2) In one embodiment of the present invention, the guide assembly enables the telescopic cylinder to drive the ceramic plate to move up and down to achieve stable movement.

[0018] (3) In one embodiment of the utility model, a sealing ring is provided on the support plate so that the support plate can better seal the channel.

[0019] (4) In one embodiment of the present invention, the cooling main pipe can be used to cool the heating plate in the cover bin more quickly after the product is hot bent.

[0020] (5) In one embodiment of the utility model, a cooling plate is provided at the bottom of the first heat insulating cotton, so as to better cool the heating plate in the cover bin after the heat bending of the product is completed.

[0021] The utility model can evacuate the heating box so that the efficiency of heat transfer in a vacuum state is low, thereby reducing damage to the inner wall of the heating box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the utility model from a first viewing angle.

[0023] Figure 2 It is a three-dimensional schematic diagram of the second viewing angle of the utility model.

[0024] Figure 3 This is the internal structure diagram of the heating box.

[0025] Figure 4 This is a diagram of the internal structure of the cover warehouse. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] See also Figures 1 to 4The utility model provides an embodiment: a hot bending device for a low-melting-point silicon oxide free-form mirror, comprising a heating box 1, wherein the top of the heating box 1 is provided with a vacuum pump interface 2 and an exhaust valve interface 3, wherein the vacuum pump interface 2 is used to connect a vacuum pump, and the heating box 1 can be evacuated by the vacuum pump, so that the efficiency of heat transfer in a vacuum state is low, so that during the hot bending process of the product, the damage to the inner wall of the heating box 1 is reduced; the exhaust valve interface 3 is used to connect an exhaust valve, so that air is introduced to break the vacuum after the hot bending is completed; a heating component 4 is arranged in the heating box 1, and the product can be hot bent by the heating component 4, and a channel 5 for product entry and exit is provided at the bottom of the heating box 1 directly below the heating component 4, and the product is arranged on a ceramic flat plate 6 for placing the product, and the size of the ceramic flat plate 6 is the same as that of the channel 5, so that the ceramic flat plate 6 can move in the channel 5, and the ceramic flat plate 6 is driven by a telescopic cylinder 7, and the ceramic flat plate 6 can be driven to move up and down by the telescopic cylinder 7, thereby driving the product to move up and down, which is convenient for subsequent hot bending of the product.

[0028] The heating assembly 4 includes a heating plate 41 with a placement cavity, in which a heating tube 42 is arranged for hot bending of the product, both ends of the heating tube 42 penetrate the heating box 1 and are respectively connected to the positive and negative poles of the power supply; the four corners of the bottom of the heating plate 41 are connected to the inner bottom surface of the heating box 1 via a first ceramic support column (not shown); the outer peripheral side of the heating plate 41 is wrapped with a first thermal insulation cotton 43 to reduce heat loss, and the bottom of the first thermal insulation cotton 43 has a placement groove connected to the bottom of the heating plate 41, and the size of the placement groove is the same as that of the channel 5, which is used to accommodate the product and facilitate subsequent hot bending. A cover bin 44 is arranged on the outside of the first thermal insulation cotton 43, which can isolate the heating plate 41 and reduce heat loss.

[0029] A mounting plate 8 is provided below the heating box 1 for mounting a telescopic cylinder 7. The four corners of the top of the mounting plate 8 are connected to the bottom of the heating box 1 via connecting rods 9; the telescopic cylinder 7 is installed at the bottom of the mounting plate 8, and the push rod of the telescopic cylinder 7 penetrates the mounting plate 8 and is connected to a support plate 10 for mounting a ceramic flat plate 6. The bottom of the ceramic flat plate 6 is connected to the support plate 10 via a plurality of second ceramic support columns (not shown); a second heat insulation cotton 11 is provided between the ceramic flat plate 6 and the support plate 10, and the second heat insulation cotton 11 can reduce heat loss when the product is hot-bent;

[0030] A ceramic die 12 is placed on the top of the ceramic flat plate 6 for placing products, and the top of the ceramic die 12 is sealed by a ceramic cover plate 13 .

[0031] The working principle of this embodiment is as follows: a third heat-insulating cotton is placed on the ceramic flat plate 6, the ceramic flat plate 6 is wrapped by the third heat-insulating cotton, the support plate 10 is driven upward by the telescopic cylinder 7, thereby driving the ceramic flat plate 6 to move upward into the channel 5, and the channel 5 is sealed and isolated by the support plate 10; the heating box 1 is evacuated by a vacuum pump, and then the heating tube 42 is powered on to preheat the heating plate 41; after the preheating is completed, the heating box 42 is ventilated through the exhaust valve to break the vacuum, and then the support plate 10 is driven downward by the telescopic cylinder 7 to detach from the channel 5, and the third heat-insulating cotton is taken out.

[0032] Place the ceramic groove on the ceramic flat plate 6, put the product into the ceramic die 12, cover it with a ceramic cover plate 13, and use the telescopic cylinder 7 to drive the ceramic flat plate 6 and the ceramic die 12 to move upward so that the ceramic die 12 enters the placement groove and the ceramic cover plate 13 contacts the bottom of the heating plate 41. Use the vacuum pump to evacuate the heating box 1 again, and then power on the heating tube 42 again to heat the heating plate 41, and then heat the product in the ceramic die 12 by heat transfer.

[0033] In one embodiment of the utility model, a guide assembly is provided on the mounting plate 8, and the guide assembly can enable the telescopic cylinder 7 to drive the ceramic flat plate 6 to move up and down to move stably; the guide assembly includes a first fixed plate 141 fixed on the mounting plate 8, and the push rod of the telescopic cylinder 7 penetrates the first fixed plate 141 and is connected to the support plate 10 via the second fixed plate 142, and guide shafts 143 are fixed to the four corners of the bottom of the second fixed plate 142. The guide shafts 143 and the linear bearings 144 can play a role of limiting guidance when the telescopic cylinder 7 drives the ceramic flat plate 6 to move up and down, and the lower end of the guide shaft 143 penetrates the first fixed plate 141 and the mounting plate 8 and is connected to the first fixed plate 141 and the mounting plate 8 via the linear bearings 144.

[0034] In an embodiment of the utility model, a sealing ring 15 is provided on the support plate 10 so that the support plate 10 can better seal the channel 5 .

[0035] In one embodiment of the utility model, a cooling main pipe 16 is provided at the top of the cover bin 44 in the heating box 1. The cooling main pipe 16 can cool the heating plate 41 in the cover bin 44 more quickly after the hot bending of the product is completed. Both ends of the cooling main pipe 16 penetrate the heating box 1 and serve as a water inlet 161 and a water outlet 162 respectively.

[0036] In one embodiment of the utility model, the heating box 1 is provided with first temperature sensors 17 on both sides of the cover bin 44 for detecting the temperature on both sides of the cover bin 44; the heating plate 41 is provided with two second temperature sensors 18 for respectively detecting the upper and lower inner walls of the placement cavity for detecting the temperature on both sides of the heating plate 41.

[0037] The top of the heating box 1 has an interface 19 for the output lines of the first temperature sensor 17 and the second temperature sensor 18 .

[0038] In one embodiment of the utility model, a cooling plate 20 is provided at the bottom of the first heat insulating cotton 43, which can better cool the heating plate 41 in the cover bin 44 after the hot bending of the product is completed. An opening corresponding to the channel 5 is opened at the bottom of the cooling plate 20; a cooling cavity is provided in the cooling plate 20, and the cooling cavity is connected to the cooling main pipe 16 via a cooling sub-pipe (not shown).

[0039] The telescopic cylinder, thermal insulation cotton and linear bearing in the utility model are all prior art, which are already clearly understood by those skilled in the art and will not be described in detail here. The utility model protects the structural features of a hot bending device for a low-melting-point silicon oxide free-form mirror.

[0040] The above description is only a preferred embodiment of the present utility model and cannot be understood as a limitation of the present application. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the present utility model.

Claims

1. A thermal bending device for a low-melting-point silicon oxide free-form mirror, characterized in that: It comprises a heating box, the top of which is provided with a vacuum pump interface and an exhaust valve interface; a heating component is arranged in the heating box, the bottom of the heating box is located directly below the heating component and is provided with a channel for product entry and exit, the product is arranged on a ceramic plate, the size of the ceramic plate is the same as that of the channel, and the ceramic plate is driven by a telescopic cylinder.

2. The thermal bending device of a low-melting-point silicon oxide free-form surface mirror according to claim 1, characterized in that: The heating assembly includes a heating plate with a placement cavity, a heating tube is arranged in the placement cavity, both ends of the heating tube penetrate the heating box and are respectively connected to the positive and negative poles of the power supply; the four corners of the bottom of the heating plate are connected to the inner bottom surface of the heating box through the first ceramic support column; the outer peripheral side of the heating plate is wrapped with the first thermal insulation cotton, the bottom of the first thermal insulation cotton has a placement groove connected to the bottom of the heating plate, the size of the placement groove is the same as the size of the channel, and a cover bin is arranged on the outside of the first thermal insulation cotton.

3. The thermal bending device of the low-melting-point silicon oxide free-form surface mirror according to claim 1, characterized in that: A mounting plate is provided below the heating box, and the four corners of the top of the mounting plate are connected to the bottom of the heating box via connecting rods; the telescopic cylinder is installed at the bottom of the mounting plate, and the push rod of the telescopic cylinder penetrates the mounting plate and is connected to a support plate, and the bottom of the ceramic flat plate is connected to the support plate via a plurality of second ceramic support columns; a second heat insulation cotton is provided between the ceramic flat plate and the support plate; A ceramic concave mold is placed on the top of the ceramic flat plate, and the top of the ceramic concave mold is sealed via a ceramic cover plate.

4. The thermal bending device of the low-melting-point silicon oxide free-form surface mirror according to claim 3, characterized in that: A guide assembly is provided on the mounting plate, and the guide assembly includes a first fixed plate fixed on the mounting plate, the push rod of the telescopic cylinder penetrates the first fixed plate and is connected to the support plate via the second fixed plate, guide shafts are fixed to the four corners of the bottom of the second fixed plate, and the lower end of the guide shaft penetrates the first fixed plate and the mounting plate and is connected to the first fixed plate and the mounting plate via a linear bearing.

5. The thermal bending device of the low-melting-point silicon oxide free-form mirror according to claim 3, characterized in that: A sealing ring is arranged on the supporting plate.

6. The thermal bending device of the low-melting-point silicon oxide free-form mirror according to claim 2, characterized in that: A cooling main pipe is arranged in the heating box at the top of the cover bin, and both ends of the cooling main pipe penetrate the heating box and serve as a water inlet and a water outlet respectively.

7. The thermal bending device of the low-melting-point silicon oxide free-form mirror according to claim 2, characterized in that: The heating box is provided with first temperature sensors on both sides of the left and right sides of the cover bin; the heating plate is provided with two second temperature sensors for respectively detecting the upper and lower inner walls of the placement cavity.

8. The thermal bending device of the low-melting-point silicon oxide free-form mirror according to claim 7, characterized in that: The top of the heating box has an interface for the first temperature sensor and the second temperature sensor to output wires.

9. The thermal bending device of the low-melting-point silicon oxide free-form mirror according to claim 6, characterized in that: A cooling plate is arranged at the bottom of the first heat-insulating cotton, and an opening corresponding to the channel is opened at the bottom of the cooling plate; a cooling cavity is arranged in the cooling plate, and the cooling cavity is connected to the cooling main pipe via a cooling auxiliary pipe.

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