Temperature control box for touch screen conductive film aging

Abstract

The utility model provides a kind of temperature control box for touch screen conductive film ageing, comprising: touch screen conductive film ageing test box, touch screen conductive film ageing test box side rotatable installation has box door, touch screen conductive film ageing test box is equipped with heat insulating layer inside, the first stainless steel heating pipe is equipped with in heat insulating layer inner wall lower surface one end, temperature control component is equipped with in touch screen conductive film ageing test box, heat insulating layer inner wall two sides are equipped with second stainless steel heating pipe. Controller sets target temperature, temperature sensor real-time monitoring, heating pipe generates heat when temperature is insufficient, hair dryer blows, turbulence block guides airflow, prevents local temperature difference, auxiliary heating pipe heat diffuses with airflow, rapidly heats and maintains box temperature uniform, bimetallic strip temperature controller cuts off heating pipe power supply when overtemperature, avoid equipment and conductive film damage, movable plate and film clamping plate are embedded by protruding block, fastening by limiting screw, stable clamping conductive film prevents displacement.

Description

Technical Field

[0001] This utility model relates to the field of conductive film aging technology, specifically to a temperature control box for aging conductive films of touch screens. Background Technology

[0002] Touchscreens have become an indispensable human-computer interaction interface for modern electronic devices, and one of their core components is the conductive film (such as ITO film). The production process of conductive films involves multiple steps, including coating, etching, and cleaning. These steps can generate internal stress within the conductive film and lead to performance instability. If the film is directly introduced into subsequent assembly processes, the resulting touchscreen is prone to touch drift, malfunction, or even complete failure due to changes in ambient temperature or its own heat generation, severely impacting product reliability and yield. To improve the stability and lifespan of conductive films, the industry commonly employs high-temperature aging processes for tempering. This involves simulating harsh thermal environments to accelerate the release of internal stress, stabilizing the material's properties.

[0003] For example, patent CN215939349U discloses a fully automatic aging chamber for conductive films used in touchscreens. The chamber includes a body with a ventilation opening on the top outer wall. A purification chamber is fixedly connected to the inner wall of the ventilation opening. An installation port is provided on the top outer wall of the purification chamber, and a ventilation box is fixedly connected to the inner wall of the installation port. Doors are movably connected to both outer walls of the chamber. Mounting plates are fixedly connected to both inner walls of the chamber, and partitions are fixedly connected between the outer walls of the mounting plates and the inner walls of the chamber. The outer walls of the partitions have evenly spaced circular holes. Filter boxes are fixedly connected to both sides of the top inner wall of the chamber. This invention, by setting a purification chamber on the chamber body, filters and purifies the exhaust gas through a purification layer and an activated carbon layer within the purification chamber, thereby purifying the harmful gases generated during the aging of the conductive film and preventing the spread of harmful gases.

[0004] However, the aforementioned fully automatic aging chamber for conductive films used in touch screens has insufficient temperature uniformity, making it difficult to meet the requirements for stable aging of conductive films across the entire area. Furthermore, airflow within the chamber is prone to local dead zones, resulting in significant temperature deviations across the entire area. This leads to insufficient balance between heating efficiency and energy consumption, affecting practicality in production. Utility Model Content

[0005] The present invention aims to solve the problems mentioned in the background art by providing a temperature control box for aging conductive film of touch screen.

[0006] The specific technical solution is as follows: A temperature control chamber for aging conductive film of touch screen includes: a test chamber for aging conductive film of touch screen, a door rotatably installed on one side of the test chamber, a heat insulation layer inside the test chamber, a first stainless steel heating tube at one end of the lower surface of the inner wall of the heat insulation layer, a temperature control component inside the test chamber, and second stainless steel heating tubes on both sides of the inner wall of the heat insulation layer. The terminals of the first and second stainless steel heating tubes pass through the heat insulation layer and the test chamber in sequence, and are located outside the test chamber. A mesh plate is provided at the upper end of the first stainless steel heating tube, and the mesh plate is made of 304 stainless steel.

[0007] In a preferred embodiment of this utility model, the temperature control component includes a hair dryer. The air outlet of the hair dryer is located inside the heat insulation layer in the touch screen conductive film aging test chamber, and the air inlet of the hair dryer is located at one end of the upper surface of the touch screen conductive film aging test chamber. A baffle block is installed on one side of the heat insulation layer. The baffle block is triangular and chamfered. A controller is installed on one side of the outer surface of the touch screen conductive film aging test chamber. The controller is electrically connected to the first stainless steel heating tube, the second stainless steel heating tube, and the hair dryer.

[0008] As a preferred embodiment of this utility model, the turbulence block is provided with slots on both sides, and an auxiliary heating tube is installed in the slots. The turbulence block is located at the lower end of the blower, and the other end of the auxiliary heating tube passes through the heat insulation layer and the touch screen conductive film aging test chamber in sequence, and is located outside the touch screen conductive film aging test chamber. The auxiliary heating tube is electrically connected to the controller.

[0009] As a preferred embodiment of this utility model, a bimetallic thermostat is installed on one side of the inner wall of the insulation layer. The bimetallic thermostat is located at the upper end of the first stainless steel heating tube and is connected in series in the main power supply circuit of the first stainless steel heating tube, the second stainless steel heating tube and the auxiliary heating tube. A temperature sensor is provided on the other side of the inner wall of the insulation layer. The bimetallic thermostat and the temperature sensor are electrically connected to the controller.

[0010] As a preferred embodiment of this utility model, the touch screen conductive film aging test chamber and the upper surface of the heat insulation layer are provided with through holes, an inlet and outlet valve pipe is installed in the through holes, a clamping plate is fixedly installed on both sides of the inner wall of the heat insulation layer, a hole is provided on one side of each of the two clamping plates, a rotating shaft is rotatably installed on one side of the clamping plate, a groove is provided on one side of the surface of the clamping plate, and the turbulence block is located in the upper half between the two clamping plates.

[0011] As a preferred embodiment of this utility model, the other end of the rotating shaft is rotatably connected to a movable plate. A protrusion is provided on one side of the movable plate. The protrusion and the groove on the surface of the clamping plate are both provided with the same threaded hole. A limit screw is threadedly connected in the threaded hole. The rotating shaft and the limit screw are made of 45 steel.

[0012] This utility model has the following beneficial effects: The temperature control box for aging conductive film of touch screen provided by this utility model has a controller that sets the target temperature, a temperature sensor that monitors in real time, a heating tube that heats up when the temperature is insufficient, a blower that blows air, a baffle block that guides the airflow to prevent local temperature differences, and an auxiliary heating tube that diffuses heat with the airflow to quickly raise the temperature and maintain uniform box temperature. When the bimetallic strip temperature controller exceeds the temperature limit, it cuts off the power supply to the heating tube to avoid damage to the equipment and conductive film. The movable plate and the clamping plate are fitted with protrusions and fastened with limit screws to stably clamp the conductive film and prevent displacement. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of the temperature control box for aging conductive film of touch screen provided in an embodiment of this utility model; Figure 2 A schematic diagram of the internal structure of the touch screen conductive film aging test chamber provided in this embodiment of the utility model. Figure 3 A schematic diagram of the membrane plate structure of the temperature control box for aging the conductive film of the touch screen provided in an embodiment of this utility model; Figure 4 A schematic diagram of the controller structure of the temperature control box for aging conductive film of touch screen provided in this embodiment of the utility model; Figure 5 A schematic diagram of the turbulence block structure of the temperature control box for aging the conductive film of the touch screen provided in this embodiment of the utility model.

[0014] Attached Figure

[0015] 1. Touch screen conductive film aging test chamber; 101. Inlet / outlet valve pipe; 102. Heat insulation layer; 103. Partition plate; 2. Box door; 3. First stainless steel heating element; 301 stainless steel second heating element; 4. Temperature control assembly; 401. Hair dryer; 402. Controller; 403. Auxiliary heating element; 404. Temperature sensor; 405. Bimetallic thermostat; 406. Baffle block; 5. Membrane plate; 501. Rotating shaft; 502. Movable plate; 503. Limiting screw; 504. Protrusion block. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0018] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0020] The temperature control box for aging the conductive film of the touch screen provided in this embodiment, such as... Figures 1-5As shown, it includes: a touch screen conductive film aging test chamber 1, a door 2 rotatably installed on one side of the touch screen conductive film aging test chamber 1, a heat insulation layer 102 inside the touch screen conductive film aging test chamber 1, a first stainless steel heating tube 3 at one end of the lower surface of the inner wall of the heat insulation layer 102, a temperature control component 4 inside the touch screen conductive film aging test chamber 1, and second stainless steel heating tubes 301 on both sides of the inner wall of the heat insulation layer 102 respectively. The wiring terminals of the first stainless steel heating tube 3 and the second stainless steel heating tube 301 pass through the heat insulation layer 102 and the touch screen conductive film aging test chamber 1 in sequence and are located outside the touch screen conductive film aging test chamber 1. A mesh plate 103 is provided at the upper end of the first stainless steel heating tube 3. The mesh plate 103 is made of 304 stainless steel. The temperature control component 4 includes a blower 401. The air outlet of the blower 401 is located inside the heat insulation layer 102 in the touch screen conductive film aging test chamber 1, and the air inlet of the blower 401 is located at one end of the upper surface of the touch screen conductive film aging test chamber 1. A baffle block 406 with a triangular chamfer is installed on one side of the heat insulation layer 102. A controller 402 is installed on one side of the outer surface of the touch screen conductive film aging test chamber 1. The controller 402 is electrically connected to the first stainless steel heating tube 3, the second stainless steel heating tube 301, and the blower 401. An empty slot is provided on both sides of the baffle block 406, and an auxiliary heating tube 403 is installed in the empty slot. The baffle block 406 is located at the lower end of the blower 401. The other end of the auxiliary heating tube 403 passes through the heat insulation layer 102 and the touch screen conductive film aging test chamber 1, and is located outside the touch screen conductive film aging test chamber 1. The auxiliary heating tube 403 is electrically connected to the controller 402. A bimetallic thermostat 405 is installed on one side of the inner wall of the insulation layer 102. The bimetallic thermostat 405 is located at the upper end of the first stainless steel heating tube 3 and is connected in series in the main power supply circuit of the first stainless steel heating tube 3, the second stainless steel heating tube 301 and the auxiliary heating tube 403. A temperature sensor 404 is provided on the other side of the inner wall of the insulation layer 102. The bimetallic thermostat 405 and the temperature sensor 404 are electrically connected to the controller 402 respectively.

[0021] Through the design of the temperature control component 4, the first stainless steel heating tube 3, and the partition plate 103, during the aging test of the conductive film of the touch screen, the controller 402 sets the target temperature, and the temperature sensor 404 monitors the temperature inside the heat insulation layer 102 in real time and transmits the temperature data to the controller 402. The controller 402 compares the monitored temperature with the target temperature. If the monitored temperature is lower than the target temperature, it controls the first stainless steel heating tube 3, the second stainless steel heating tube 301, and the auxiliary heating tube 403 to be energized and heated. At the same time, it controls the blower 401 to start. The blower 401 draws in air from one end of the upper surface of the touch screen conductive film aging test chamber 1 and blows it into the heat insulation layer 102 through the air outlet. After the blown air encounters the triangular chamfered baffle 406, it is guided to various areas of the heat insulation layer 102 to avoid the formation of dead zones due to concentrated airflow and uneven local temperature, thus ensuring heat insulation. The overall temperature inside layer 102 is uniform, and the heat emitted by the auxiliary heating tubes 403 installed in the slots on both sides of the turbulence block 406 is carried by the airflow of the blower 401 and diffused into the interior of the insulation layer 102, which can quickly raise and maintain the temperature inside the chamber. The partition plate 103 at the upper end of the first stainless steel heating tube 3 is made of 304 stainless steel, which can separate the conductive film to be aged from the first stainless steel heating tube 3, preventing the conductive film from directly contacting the high-temperature heating tube surface and causing local overheating damage. At the same time, the heat resistance of 304 stainless steel can ensure that the partition plate 103 can be used stably in the high-temperature environment of the aging test. When the controller 402 fails and the temperature inside the insulation layer 102 exceeds the safety threshold, the bimetallic thermostat 405 connected in series in the main power supply circuit of the heating tube will deform due to heat, and the internal contacts will break, directly cutting off the power supply to the heating tube, thus avoiding damage to the equipment and conductive film due to overheating.

[0022] Among them, the controller 402 can be Siemens S7-200 SMART ST20; the temperature sensor 404 can be a platinum resistance thermometer PT100; and the bimetallic thermostat 405 can be an Omron E5CC-TQX3ASM-800. Example

[0023] The temperature control box for aging the conductive film of the touch screen provided in this embodiment, such as... Figures 1-3 As shown, the device includes: a touchscreen conductive film aging test chamber 1 and a heat insulation layer 102 with through holes on the upper surface, inlet and outlet valve pipes 101 installed in the through holes; two clamping plates 5 are fixedly installed on both sides of the inner wall of the heat insulation layer 102, each with a hole on one side; a rotating shaft 501 is rotatably installed on one side of the clamping plates 5; a groove is provided on one side of the surface of the clamping plates 5; and a turbulence block 406 is located in the upper half between the two clamping plates 5. A movable plate 502 is rotatably connected to the other end of the rotating shaft 501; a protrusion 504 is provided on one side of the movable plate 502; both the protrusion 504 and the groove on the surface of the clamping plates 5 have the same threaded holes; and a limit screw 503 is threadedly connected to the threaded holes. The rotating shaft 501 and the limit screw 503 are made of 45# steel.

[0024] Through the design of the inlet / outlet valve pipe 101, the clamping plate 5, and the protrusion 504, the chamber door 2 is opened and the movable plate 502 is rotated around the rotating shaft 501. Then, the conductive film is attached to one side of the surface of the clamping plate 5, and the protrusion 504 on one side of the movable plate 502 is aligned with the groove on the surface of the clamping plate 5 and embedded. Then, the limiting screw 503 is screwed into the aligned threaded hole and tightened. The limiting screw 503 makes the movable plate 502 and the clamping plate 5 fit tightly together, thereby stably clamping the conductive film between the two, avoiding displacement of the conductive film due to airflow impact or slight vibration of the equipment during the aging test. The rotating shaft 501 and the limiting screw 503 are made of 45 steel, and their strength can ensure that they will not deform under long-term clamping force. The overall installation stability of the conductive film and its adaptability to the test environment are improved. The inlet / outlet valve pipe 101 can be opened or closed according to the test requirements. When opened, it can regulate the gas environment inside the chamber, discharge moisture or introduce protective gas.

[0025] In summary, the temperature control box for aging the conductive film of the touch screen provided in this embodiment has the following advantages: by using the triangular chamfered baffle 406 in conjunction with the blower 401, local dead zones in the airflow can be avoided; and by embedding the auxiliary heating tube 403 into the slot of the baffle 406, heat can be quickly diffused to the entire area.

[0026] In use, open the door 2 and rotate the movable plate 502 to make it rotate around the rotating shaft 501. Then, attach the conductive film to one side of the clamping plate 5, align the protrusion 504 on one side of the movable plate 502 with the groove on the surface of the clamping plate 5 and insert it. Screw the limiting screw 503 into the aligned threaded hole and tighten it. The conductive film is stably clamped between the two. The inlet and outlet valve pipe 101 can be opened or closed according to the test requirements. When performing the touch screen conductive film aging test, the target temperature is set through the controller 402. The temperature sensor 404 monitors the temperature inside the heat insulation layer 102 in real time and transmits the temperature data to the controller 402. The controller 402 compares the monitored temperature with the target temperature. If the monitored temperature is lower than the target temperature, the controller will detect the lower temperature. At the target temperature, the first stainless steel heating tube 3, the second stainless steel heating tube 301, and the auxiliary heating tube 403 are energized and heated. At the same time, the blower 401 is started. The blower 401 draws in air from one end of the upper surface of the conductive film aging test chamber 1 of the touch screen and blows it into the heat insulation layer 102 through the air outlet. After the blown air encounters the triangular chamfered baffle 406, it will be guided to various areas of the heat insulation layer 102. When the controller 402 malfunctions and causes the temperature inside the heat insulation layer 102 to exceed the safety threshold, the bimetallic thermostat 405 connected in series in the main power supply circuit of the heating tube is deformed by heat, and the internal contacts are disconnected, directly cutting off the power supply to the heating tube to avoid damage to the equipment and conductive film due to overheating.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A temperature control box for aging conductive film of a touch screen, characterized in that, include: A touch screen conductive film aging test chamber (1) is provided. A door (2) is rotatably installed on one side of the touch screen conductive film aging test chamber (1). A heat insulation layer (102) is provided inside the touch screen conductive film aging test chamber (1). A first stainless steel heating tube (3) is provided at one end of the lower surface of the inner wall of the heat insulation layer (102). A temperature control component (4) is provided inside the touch screen conductive film aging test chamber (1). A second stainless steel heating tube (301) is provided on both sides of the inner wall of the heat insulation layer (102). The wiring terminals of the first stainless steel heating tube (3) and the second stainless steel heating tube (301) pass through the heat insulation layer (102) and the touch screen conductive film aging test chamber (1) in sequence and are located outside the touch screen conductive film aging test chamber (1). A mesh plate (103) is provided at the upper end of the first stainless steel heating tube (3). The mesh plate (103) is made of 304 stainless steel.

2. The temperature control box for aging the conductive film of a touch screen according to claim 1, characterized in that, The temperature control component (4) includes a blower (401). The air outlet of the blower (401) is located inside the heat insulation layer (102) in the touch screen conductive film aging test chamber (1). The air inlet of the blower (401) is located at one end of the upper surface of the touch screen conductive film aging test chamber (1). A baffle (406) is installed on one side of the heat insulation layer (102). The baffle (406) is triangular and chamfered. A controller (402) is installed on one side of the outer surface of the touch screen conductive film aging test chamber (1). The controller (402) is electrically connected to the first stainless steel heating tube (3), the second stainless steel heating tube (301), and the blower (401).

3. The temperature control box for aging the conductive film of a touch screen according to claim 2, characterized in that, The turbulence block (406) has empty slots on both sides, and an auxiliary heating tube (403) is installed in the empty slot. The turbulence block (406) is located at the lower end of the blower (401). The other end of the auxiliary heating tube (403) passes through the heat insulation layer (102) and the touch screen conductive film aging test chamber (1) in sequence, and is located outside the touch screen conductive film aging test chamber (1). The auxiliary heating tube (403) is electrically connected to the controller (402).

4. The temperature control box for aging the conductive film of a touch screen according to claim 2, characterized in that, A bimetallic thermostat (405) is installed on one side of the inner wall of the insulation layer (102). The bimetallic thermostat (405) is located at the upper end of the first stainless steel heating tube (3) and is connected in series in the main power supply circuit of the first stainless steel heating tube (3), the second stainless steel heating tube (301) and the auxiliary heating tube (403). A temperature sensor (404) is provided on the other side of the inner wall of the insulation layer (102). The bimetallic thermostat (405) and the temperature sensor (404) are electrically connected to the controller (402) respectively.

5. The temperature control box for aging the conductive film of a touch screen according to claim 3, characterized in that, The touch screen conductive film aging test chamber (1) and the upper surface of the heat insulation layer (102) are provided with through holes. An inlet and outlet valve pipe (101) is installed in the through holes. A membrane plate (5) is fixedly installed on both sides of the inner wall of the heat insulation layer (102). A hole is provided on one side of each of the two membrane plates (5). A rotating shaft (501) is rotatably installed on one side of the membrane plate (5). A groove is provided on one side of the surface of the membrane plate (5). The turbulence block (406) is located in the upper half between the two membrane plates (5).

6. The temperature control box for aging the conductive film of a touch screen according to claim 5, characterized in that, The other end of the rotating shaft (501) is rotatably connected to a movable plate (502). A protrusion (504) is provided on one side of the movable plate (502). The protrusion (504) and the groove provided on the surface of the clamping plate (5) are both provided with the same threaded hole. A limit screw (503) is threadedly connected in the threaded hole. The rotating shaft (501) and the limit screw (503) are made of 45 steel.

Images