Insertion opening sealing mechanism of heat treatment equipment and heat treatment equipment

Abstract

The utility model relates to a feeding port sealing mechanism of heat treatment equipment and the heat treatment equipment. The feeding opening sealing mechanism of the heat treatment equipment comprises a door body located in a feeding opening of the heat treatment equipment, and the periphery of the door body is in clearance fit with the side wall of the feeding opening; the sealing structure is mounted on the door body; the driving mechanism is connected with the door body through a rotating shaft, the driving mechanism can drive the door body to move to a horizontal state or move to enable the input port to be in a closed state, and when the input port is in the closed state, the door body is in sealed connection with the side wall of the input port. When the door body is heated to deform along the length direction, the sealing structure can be always in sealing fit with the four side walls of the feeding opening, so that the heat treatment chamber of the heat treatment equipment has good sealing and heat preservation effects, and the heat treatment effect of a glass substrate is improved. And each input port of the heat treatment equipment directly faces two brackets, so that the mounting number of the driving mechanisms can be halved, and the production cost of the heat treatment equipment is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing equipment for display devices, in particular to an input port sealing mechanism for a heat treatment device and a heat treatment device including the input port sealing mechanism. Background Art

[0002] After depositing a film on the surface of a glass substrate, it is usually necessary to place the glass substrate in a heat treatment device such as an oven to bake and heat-treat the deposited film to cure the deposited film. Heat treatment at a specific temperature can enable the deposited film material to achieve better properties, which requires the heat treatment device to have a good sealing effect.

[0003] For a conventional heat treatment device, a plurality of brackets 2' for placing glass substrates are installed at intervals from top to bottom in the heat treatment chamber 1'. A plurality of input ports 3' corresponding to the brackets 2' one by one are provided at intervals from top to bottom on one side of the heat treatment chamber 1'. Each input port 3' is selectively closed or opened by a sealing door 4'. The left and right sides of each sealing door 4' are respectively connected to a driving device 5'. Among them, the sealing door 4' adopts a flip-type structure, that is, the position of the sealing door 4' adjacent to its lower side is hinged to the outer wall of the heat treatment chamber 1'. The driving device 5' includes a cylinder and a piston rod connected to the cylinder. The left and right sides of the sealing door 4' are respectively hinged to a piston rod. The input port 3' is sealed by driving the sealing door 4' to rotate by the cylinder. At the same time, a heat preservation layer 6' is also installed inside the sealing door 4' to achieve the sealing and heat preservation effects on the heat treatment chamber 1'.

[0004] However, in practical applications, the above prior art has the following deficiencies:

[0005] (1) In order to adapt to the size of the glass substrate, both the input port 3' and the sealing door 4' are designed as rectangular structures. The heat treatment heating temperature is about 300 °C. After the sealing door 4' is baked by hot air for a long time, it is easy to bend and deform along the length direction and does not fit tightly with the outer wall of the heat treatment chamber 1' (refer to Figure 5 ), there will be gaps, and hot air leakage will occur along the gaps, resulting in a local temperature drop in the heat treatment chamber 1', uneven temperature distribution in the heat treatment chamber 1', the temperature near the gaps will drop, the temperature cannot reach the ideal temperature, and the heat treatment effect is poor.

[0006] (2) Considering the load problem of the cylinder, the length of the sealing door 4' along the vertical direction should not be too long, so that the length of the input port 3' along the vertical direction is limited, resulting in that only one glass substrate can be sent into an input port 3'; if it is necessary to send two glass substrates into an input port 3', the length of the input port 3' along the vertical direction needs to be increased and the length of the sealing door 4' along the vertical direction needs to be correspondingly extended. However, when the sealing door 4' rotates, the load on the cylinder will be very large, which may affect the normal opening and closing of the sealing door 4'. Summary of the Invention

[0007] An object of the present utility model is to provide a sealing mechanism for the input port of a heat treatment device, which can enable the heat treatment device to have a good sealing effect.

[0008] Another object of the present utility model is to provide a heat treatment device, which has good sealing performance, can improve the heat treatment effect of a glass substrate, and has a low production cost.

[0009] To achieve this purpose, the present utility model adopts the following technical solutions:

[0010] On the one hand, a sealing mechanism for the input port of a heat treatment device is provided. The sealing mechanism for the input port of the heat treatment device includes a door body, a sealing structure, and a driving mechanism.

[0011] As a further solution of the sealing mechanism for the input port of the heat treatment device, the door body is located inside the input port of the heat treatment device, and there is a clearance fit between the periphery of the door body and the side wall of the input port;

[0012] The sealing structure is installed on the door body and is used to seal the gap between the periphery of the door body and the side wall of the input port;

[0013] The driving mechanism is connected to the door body through a rotating shaft. The driving mechanism can drive the door body to rotate to a horizontal state or rotate to make the input port in a closed state. When the input port is in a closed state, the periphery of the door body and the side wall of the input port are sealed and connected through the sealing structure.

[0014] As a further solution of the sealing mechanism for the input port of the heat treatment device, the number of the rotating shafts is two. One end of each of the two rotating shafts is fixedly connected to the central positions on the left and right sides of the door body respectively, and the other ends of the two rotating shafts away from the door body are rotatably connected to the left and right side walls of the input port respectively.

[0015] As an alternative solution of the sealing mechanism for the input port of the heat treatment device, the driving mechanism includes a motor installed on the outer wall of the heat treatment device adjacent to the rotating shaft, and the rotating shaft passes through the side wall of the input port and is connected to the motor.

[0016] As an alternative solution of the sealing mechanism for the input port of the heat treatment device, the driving mechanism includes a motor and a first gear fixed on the output shaft of the motor. The rotating shaft is sleeved with a second gear that meshes with the first gear.

[0017] As an alternative solution of the sealing mechanism for the input port of the heat treatment device, the sealing structure includes a first heat insulation layer fixed around the door body, and the rotating shaft passes through the first heat insulation layer and is fixedly connected to the door body.

[0018] As a further solution for the input port sealing mechanism of the heat treatment equipment, the sealing structure further includes a second heat insulation layer covering the inner side of the door body.

[0019] As a further solution for the input port sealing mechanism of the heat treatment equipment, the sealing structure further includes a third heat insulation layer, and the third heat insulation layer is adjacent to the periphery of the door body and covers part of the outer side of the door body.

[0020] As a further solution for the input port sealing mechanism of the heat treatment equipment, the first heat insulation layer, the second heat insulation layer and the third heat insulation layer are integrally connected and formed.

[0021] On the other hand, a heat treatment equipment is provided, which includes a heat treatment chamber and an input port sealing mechanism.

[0022] Wherein, a plurality of brackets are installed at intervals from top to bottom in the heat treatment chamber, a plurality of input ports are opened at intervals from top to bottom on one side of the heat treatment chamber, and the input port sealing mechanism is used to selectively seal the input ports.

[0023] As a further solution for the heat treatment equipment, the central positions on the left and right sides of the door body are respectively connected to the driving mechanism through a rotating shaft. In the heat treatment chamber, every two of the brackets are opposite to one of the input ports. When the driving mechanism drives the door body to rotate to a horizontal state, there are respectively feeding spaces for glass substrates between the upper and lower sides of the door body and the upper and lower side walls of the input port.

[0024] The beneficial effects of the present utility model compared with the prior art:

[0025] In the input port sealing mechanism of the heat treatment equipment of the present utility model, there is a clearance fit between the periphery of the door body and the four side walls of the input port, and the sealing is achieved through the sealing structure. When the door body is deformed along the length direction due to heat, the sealing structure can always be in sealing fit with the four side walls of the input port, so that the heat treatment chamber of the heat treatment equipment has good sealing and heat insulation effects, thereby improving the heat treatment effect of the glass substrate.

[0026] When the door body rotates relative to the input port, the rotating shaft is located at the central positions on the left and right sides of the door body, which can reduce the load of the driving mechanism. Thus, the dimensions of the input port and the door body in the vertical direction can be appropriately increased. Two brackets can be installed at intervals up and down in each heat treatment chamber for placing glass substrates, which can improve the heat treatment efficiency of the glass substrate.

[0027] Compared with the prior art, the number of driving mechanisms in the heat treatment equipment of the present utility model can be reduced by half, effectively reducing the production cost of the heat treatment equipment. Description of the Drawings

[0028] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 It is a front view schematic diagram of a heat treatment device in the prior art.

[0030] Figure 2 It is a side view schematic diagram of a heat treatment device (excluding the driving device) in the prior art.

[0031] Figure 3 It is a state schematic diagram when the sealing door in the prior art opens the input port.

[0032] Figure 4 It is a state schematic diagram when the sealing door in the prior art closes the input port.

[0033] Figure 5 It is a schematic diagram of the sealing door in the prior art fitting to the outer wall of the heat treatment chamber after being baked by hot air for a long time.

[0034] Figure 6 It is a schematic diagram of the cooperation between an input port of the heat treatment chamber of the heat treatment device in this embodiment and the input port sealing mechanism.

[0035] Figure 7 It is a state schematic diagram when the door body in this embodiment closes the input port.

[0036] Figure 8 It is a state schematic diagram when the door body in this embodiment opens the input port.

[0037] Figure 1-5 In:

[0038] 1', heat treatment chamber; 2', bracket; 3', input port; 4', sealing door; 5', driving device; 6', heat insulation layer.

[0039] Figures 6 to 8 In:

[0040] 1, door body; 2, sealing structure; 21, first heat insulation layer; 22, second heat insulation layer; 23, third heat insulation layer; 3, driving mechanism; 4, rotating shaft;

[0041] 100, input port; 200, bracket. Specific embodiments

[0042] Referring to the embodiments described in detail below in conjunction with the accompanying drawings, the advantages and features of the present utility model and the methods for realizing them will become apparent. However, the present utility model is not limited to the embodiments disclosed below, but can be implemented in various different forms. The provision of these embodiments is only to complete the disclosure of the present utility model and enable those skilled in the art to fully understand the scope of the present utility model, and the present utility model is only defined by the scope of the claims. The same reference numerals denote the same components throughout the specification.

[0043] Hereinafter, the present utility model will be described in detail with reference to the accompanying drawings.

[0044] Referring to Figures 6 to 8 , the heat treatment equipment of this embodiment includes a heat treatment chamber and a plurality of input port sealing mechanisms for the heat treatment equipment. A plurality of input ports 100 are spaced apart from top to bottom on one side of the heat treatment chamber, and a plurality of brackets 200 are installed at intervals from top to bottom in the heat treatment chamber. Among them, the input port sealing mechanism of the heat treatment equipment is used to selectively seal the input ports 100.

[0045] Among them, the input port sealing mechanism of the heat treatment equipment includes:

[0046] A door body 1, the door body 1 is located within the input port 100 of the heat treatment equipment, and there is a clearance fit between the periphery (upper and lower sides and left and right sides) of the door body 1 and the side wall of the input port 100;

[0047] A sealing structure 2, installed on the door body 1, for sealing the gap between the periphery of the door body 1 and the side wall of the input port 100;

[0048] A driving mechanism 3, the driving mechanism 3 is connected to the door body 1 through a rotating shaft 4, and the driving mechanism 3 can drive the door body 1 to rotate to a horizontal state or rotate to a state where the input port 100 is in a sealed state. When the input port 100 is in a closed state, the door body 1 and the side wall of the input port 100 are sealed and connected through the sealing structure 2.

[0049] There is a clearance fit between the periphery of the door body 1 and the four side walls of the input port 100 to facilitate the smooth rotation of the door body 1 driven by the driving mechanism 3; at the same time, the door body 1 and the four side walls of the input port 100 are sealed through the sealing structure 2, which can make the heat treatment chamber have good sealing and heat preservation effects.

[0050] When the door body 1 rotates to the horizontal state, there are respectively spaces for delivering glass substrates between the upper and lower sides of the door body 1 (i.e., the inner and outer sides when the door body 1 is in the vertical state) and the upper and lower side walls of the input port 100.

[0051] In this embodiment, when the glass substrate is heat-treated in the heat treatment device 1, the high temperature of the heat treatment device will cause the door body 1 to deform slightly along its length direction, but has little influence on the deformation of the door body 1 along its width direction, which can be ignored compared with the deformation of the door body 1 along its length direction. In the input port sealing mechanism of the heat treatment device of this embodiment, the door body 1 is equivalent to being embedded in the input port 100. Therefore, even if the door body 1 deforms slightly along its length direction, the upper and lower sides of the door body 1 will still be in close fit with the input port 100 under the action of the sealing structure 2, and no gap will be generated at the seal to leak hot air, effectively ensuring the sealing performance of the heat treatment chamber.

[0052] Further, the number of the rotating shafts 4 is two. One ends of the two rotating shafts 4 are respectively fixedly connected to the central positions on the left and right sides of the door body 1, and the ends of the two rotating shafts 4 away from the door body 1 are respectively rotatably connected to the left and right side walls of the input port 100. The driving mechanism 3 can drive the door body 1 and the rotating shafts 4 to rotate together relative to the left and right side walls of the input port 100. Since the rotating shafts 4 are located at the central positions on the left and right sides of the door body 1, the load of the driving mechanism 3 can be effectively reduced, and the energy consumption can be lowered.

[0053] Optionally, as Figure 6 shown, the driving mechanism 3 includes a motor installed on the outer wall of the heat treatment device adjacent to the rotating shaft 4, and the rotating shaft 4 passes through the side wall of the input port 100 and is connected to the motor. Among them, the motor is installed outside the heat treatment chamber and adjacent to the rotating shaft 4, which can reduce the power transmission distance between the motor and the door body 1 and lower the energy consumption of the motor. The motor is directly connected to the rotating shaft 4 to directly drive the rotating shaft 4 to drive the door body 1 to rotate, realizing the opening or closing of the input port 100.

[0054] Optionally, the driving mechanism 3 includes a motor and a first gear fixed on the output shaft of the motor, and a second gear meshing with the first gear is arranged outside the rotating shaft 4. Among them, the first gear and the second gear are not shown in the figure. In this embodiment, the door body 1 is driven to rotate by the motor driving the gear transmission, and then the opening or closing of the input port 100 is realized.

[0055] Of course, the driving mechanism 3 and the transmission method of this embodiment are not limited to the two described above, and can also be other driving methods driven by hydraulic cylinders or pneumatic cylinders (not shown in the figure). When using a hydraulic cylinder or a pneumatic cylinder for driving, the rotating shaft 4 is rotatably connected to the left and right side walls of the input port 100, and the hydraulic cylinder or the pneumatic cylinder can be directly hinged to the outer side wall of the door body 1, so that the door body 1 can be driven to rotate around the rotating shaft 4 by the hydraulic cylinder or the pneumatic cylinder. Further, the hinge point of the hydraulic cylinder or the pneumatic cylinder and the door body 1 is adjacent to the upper side or the lower side of the door body 1, which can reduce the load of the hydraulic cylinder or the pneumatic cylinder.

[0056] Furthermore, the sealing structure 2 includes a first heat-insulating layer 21 fixed around the door body 1. The rotating shaft 4 passes through the first heat-insulating layer 21 and is fixedly connected to the door body 1. Specifically, the rotating shaft 4 passes through the first heat-insulating layer 21 and is fixedly connected to both sides (left and right sides) of the door body 1 along its width direction.

[0057] Among them, the first heat-insulating layer 21 itself has a heat-insulating function and can be made of non-rigid heat-insulating materials. Therefore, it can be used for sealing between the door body 1 and the four side walls of the input port 100 at the same time, so that the heat treatment chamber has good sealing and heat-insulating effects.

[0058] Furthermore, the first heat-insulating layer 21 includes heat-insulating cotton and a heat-insulating cloth wrapped around the outside of the heat-insulating cotton. The heat-insulating cotton is used to prevent the heat in the heat treatment chamber from diffusing out through the door body 1, and the heat-insulating cloth is used to wrap the heat-insulating cotton, which is convenient for being detachably installed around the door body 1 through fasteners such as screws. Of course, the heat-insulating cloth itself also has heat-insulating, heat-preserving and wear-resistant effects.

[0059] Furthermore, the sealing structure 2 further includes a second heat-insulating layer 22 covering the inner side of the door body 1. Specifically, the second heat-insulating layer 22 is formed by the first heat-insulating layer 21 extending along the four sides of the door body 1 to cover the inner side of the door body 1. The structure of the second heat-insulating layer 22 is the same as that of the first heat-insulating layer 21, and both include heat-insulating cotton and a heat-insulating cloth wrapped around the outside of the heat-insulating cotton. That is, the heat-insulating cotton and the heat-insulating cloth outside in the first heat-insulating layer 21 and the second heat-insulating layer 22 are respectively an integral structure, which can improve the heat-insulating and heat-preserving effects.

[0060] Furthermore, the sealing structure 2 further includes a third heat-insulating layer 23. The third heat-insulating layer 23 is adjacent to the four sides of the door body 1 and covers part of the outside of the door body 1. The structures of the first heat-insulating layer 21, the second heat-insulating layer 22 and the third heat-insulating layer 23 are the same, and all include heat-insulating cotton and a heat-insulating cloth wrapped around the outside of the heat-insulating cotton.

[0061] Specifically, the third heat-insulating layer 23 on the outside of the door body 1 is similar to a rectangular frame structure, and only needs to be adjacent to the four sides of the door body 1 and cover the outside of the door body 1 to achieve the effects of heat preservation and sealing.

[0062] Furthermore, the first heat-insulating layer 21, the second heat-insulating layer 22 and the third heat-insulating layer 23 are integrally connected and formed. That is, the heat-insulating cotton and the heat-insulating cloth outside in the first heat-insulating layer 21, the second heat-insulating layer 22 and the third heat-insulating layer 23 are respectively an integral structure, which can further improve the heat-insulating and heat-preserving effects.

[0063] Of course, the heat-insulating cotton in this embodiment can also be replaced by other non-rigid materials with heat-insulating effects, and there is no specific limitation. The material of the heat-insulating cloth is not limited, and any material with heat-insulating effect and wear resistance can be applied to this embodiment.

[0064] When the driving mechanism 3 drives the door body 1 to rotate, there will be some friction between the door body 1 and the four side walls of the input port 100. In this embodiment, the first heat insulation layer 21 is covered around the door body 1, the second heat insulation layer 22 is covered on the outer side of the door body, and the third heat insulation layer 23 is covered at the position near the four sides on the inner side of the door body 1. When the door body 1 rotates to seal the input port 100, the frictional force between the four side walls of the input port 100 and the door body 1 will not cause the sealing structure 2 to separate from the door body 1 and affect the sealing effect of the heat treatment chamber.

[0065] In this embodiment, since the input port 100 of the heat treatment chamber of the heat treatment equipment is sealed by the above-mentioned input port sealing mechanism of the heat treatment equipment, when the central positions on the left and right sides of the door body 1 are respectively connected to the driving mechanism 3 through a rotating shaft 4, the load of the driving mechanism 3 is reduced. To make full use of this driving mechanism 3, the size of the input port 100 in the vertical direction can be increased. Correspondingly, the size of the door body 1 in the vertical direction should also be appropriately increased. At this time, one input port 100 faces two brackets 200. When the driving mechanism 3 drives the door body 1 to rotate to the horizontal state, there are respectively spaces for delivering glass substrates between the upper and lower sides of the door body 1 and the upper and lower side walls of the input port 100. Moreover, when the door body 1 is in the horizontal state, the brackets 200 are arranged at intervals with the door body 1, so that the door body 1 does not interfere with the brackets 200 when rotating to the horizontal state.

[0066] The technical effects of this embodiment are as follows:

[0067] In this embodiment, the door body 1 is installed at the input port 100 and is in clearance fit with the input port 100. At the same time, the sealing structure 2 is used to seal the gaps between the door body 1 and the four side walls of the input port 100. Even if the door body 1 is bent and deformed due to heat along its length direction, no gaps will be generated at the sealing part to cause hot air leakage, and the heat treatment chamber can have good sealing and heat insulation effects.

[0068] The central positions on the left and right sides of the door body 1 are rotatably connected to the side walls of the input port 100 through the rotating shaft 4, which can effectively reduce the load of the driving mechanism 3. For this reason, the sizes of the input port 100 and the door body 1 of the heat treatment chamber in the vertical direction can be increased, so that each input port 100 faces two brackets 200, and the driving mechanism 3 can be fully utilized, reducing the installation quantity of the driving mechanism 3 by half, thereby reducing the cost of the heat treatment equipment.

[0069] Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the above embodiments, but can be manufactured in various forms, and those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or basic characteristics of the present invention. Therefore, it should be understood that the above embodiments are exemplary in all aspects and not restrictive.

Claims

1. A sealing mechanism for an inlet of a heat treatment device, characterized in that: include: A door body, the door body is located in the input port of the heat treatment equipment, and the periphery of the door body is gap-matched with the side wall of the input port; A sealing structure, which is installed on the door body and is used to seal the gap between the periphery of the door body and the side wall of the input port; A driving mechanism is connected to the door body via a rotating shaft, and the driving mechanism can drive the door body to rotate to a horizontal state or rotate to make the input port in a closed state. When the input port is in a closed state, the surrounding of the door body and the side wall of the input port are sealed and connected via the sealing structure.

2. The inlet sealing mechanism of the heat treatment equipment according to claim 1, characterized in that: There are two rotating shafts, one end of which is fixedly connected to the center position of the left and right sides of the door body, and one end of which is away from the door body is rotatably connected to the left and right side walls of the input port.

3. The inlet sealing mechanism of the heat treatment equipment according to claim 2, characterized in that: The driving mechanism comprises a motor installed on the outer wall of the heat treatment equipment adjacent to the rotating shaft, and the rotating shaft passes through the side wall of the input port and is connected to the motor.

4. The inlet sealing mechanism of the heat treatment equipment according to claim 2, characterized in that: The driving mechanism comprises a motor and a first gear fixed on the output shaft of the motor, and the rotating shaft is sleeved with a second gear meshing with the first gear.

5. The inlet sealing mechanism of the heat treatment equipment according to any one of claims 2 to 4, characterized in that: The sealing structure comprises a first heat-insulating layer fixed around the door body, and the rotating shaft passes through the first heat-insulating layer and is fixedly connected to the door body.

6. The sealing mechanism for the inlet of the heat treatment equipment according to claim 5, characterized in that: The sealing structure also includes a second heat-insulating layer covering the inner side of the door body.

7. The sealing mechanism for the inlet of the heat treatment equipment according to claim 6, characterized in that: The sealing structure further comprises a third heat-insulating layer, wherein the third heat-insulating layer is adjacent to the periphery of the door body and covers a portion of the outer side of the door body.

8. The inlet sealing mechanism of the heat treatment equipment according to claim 7, characterized in that: The first thermal insulation layer, the second thermal insulation layer and the third thermal insulation layer are connected and formed as one piece.

9. A heat treatment device, comprising a heat treatment chamber, wherein a plurality of brackets are installed in the heat treatment chamber from top to bottom, and a plurality of inlets are provided in one side of the heat treatment chamber from top to bottom, wherein: It also includes an inlet sealing mechanism of the heat treatment equipment for selectively sealing the inlet as described in any one of claims 1 to 8.

10. The heat treatment equipment according to claim 9, characterized in that: The center positions of the left and right sides of the door body are respectively connected to the driving mechanism through a rotating shaft. Every two of the brackets in the heat treatment chamber are opposite to one of the input ports. When the driving mechanism drives the door body to rotate to a horizontal state, there is a delivery space for the glass substrate between the upper and lower sides of the door body and the upper and lower side walls of the input port.

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