Red detection device for heating wire of hair dryer

Abstract

The utility model relates to the technical field of hair dryer testing, in particular to a hair dryer heating wire redness detection device which comprises a control platform, a detection table, a shading shell installed on the detection table and a shading barrel used for being in butt joint with an air outlet of a hair dryer, and the top of the shading shell is provided with a communication opening used for being communicated with the shading barrel. An image acquisition device which is in communication connection with the control platform and is used for detecting redness of the electric heating wire is installed in the shading shell, the image acquisition device is arranged towards the shading barrel, a heat insulation light-transmitting plate is arranged in the communication opening, and a heat dissipation mechanism is arranged on at least one position of the peripheral side of the shading shell. The utility model aims to solve the problem that the visual sensor is influenced by ambient light and high temperature when the blowing cylinder is subjected to redness detection.

Description

Technical Field

[0001] The utility model relates to the technical field of hair dryer testing, in particular to a hair dryer electric heating wire reddening detection device. Background Art

[0002] The heating wire is usually installed at the air outlet of the hair dryer. It can be heated by electric current to convert cold air into hot air to meet the user's needs for quick drying and styling. During the production and testing of hair dryers, the heating wire needs to be tested for redness to detect whether the heating wire will become abnormally red when the hair dryer is in the hot air mode.

[0003] At present, in the process of detecting the redness of hair dryers, visual sensors are usually used in combination with image processing technology to detect whether the heating wire is abnormally red in the hot air setting. However, the following two problems will arise when using visual sensors to detect the redness of the heating wire: first, due to the influence of external environmental light sources, the real signal of the detection object will be masked, the image contrast will be reduced, and feature recognition will be difficult; second, because the redness detection needs to be close to the air outlet of the hair dryer in the hot air setting, the hot air will generate high temperature in the detection environment, affecting the pixel response, causing inaccurate or even distorted images, and long-term operation in a high temperature environment will accelerate the aging of the sensor and shorten its service life.

[0004] Therefore, the above problems need to be solved urgently by those skilled in the art. Utility Model Content

[0005] In order to solve the above problems in the background technology, the utility model provides a device for detecting the redness of the electric heating wire of a hair dryer.

[0006] The solution adopted by the utility model to solve its technical problems is: a device for detecting the redness of the electric heating wire of a hair dryer, comprising a control platform, a detection platform, a light-shielding shell installed on the detection platform and a light-shielding cylinder for connecting to the air outlet of the hair dryer, a connecting port for communicating with the light-shielding cylinder is arranged on the top of the light-shielding shell, an image acquisition device for detecting the redness of the electric heating wire which is communicatively connected with the control platform is installed in the light-shielding shell, the image acquisition device is arranged toward the light-shielding cylinder, a heat-insulating light-transmitting plate is arranged in the connecting port, and a heat dissipation mechanism is arranged at least at one place around the circumference of the light-shielding shell.

[0007] By adopting the above technical solution, the light-shielding shell and the light-shielding cylinder can enable the image acquisition device to dock and detect the reddening of the hair dryer electric heating wire, and can prevent ambient light from interfering with the detection results, ensuring that the image acquisition device can accurately capture the red light emitted by the electric heating wire. The heat-insulating light-transmitting plate located at the connecting port can prevent the heat generated by the electric heating wire from being directly transferred to the image acquisition device, while allowing light to pass through to protect the device from high temperature. The heat dissipation mechanism arranged on the side of the light-shielding shell can help dissipate heat inside the light-shielding shell to prevent excessive temperature from affecting the detection accuracy or damaging the equipment.

[0008] Furthermore, the heat dissipation mechanism includes an intake fan arranged on one side of the light-shielding shell, an exhaust fan arranged on the other side of the light-shielding shell and used to cooperate with the intake fan to ventilate and dissipate heat in the shell, and two heat dissipation hoses respectively connected to one end of the air inlet of the intake fan and one end of the air outlet of the exhaust fan.

[0009] By adopting the above technical solution, the cooling fans on both sides can actively promote air flow and accelerate the discharge of hot air inside the shading shell; and the heat exhaust hose can cover the air inlet and outlet of the cooling fans on both sides to provide shading without affecting heat exhaust.

[0010] Furthermore, the heat-insulating and light-transmitting plate is a quartz plate.

[0011] By adopting the above technical solution, the quartz plate can effectively prevent the conduction of heat and avoid condensation of water droplets on the surface without affecting the detection of the image acquisition device.

[0012] Furthermore, a first lifting mechanism for driving the testing platform to rise and fall is arranged on the side of the testing platform, and the first lifting mechanism includes a supporting assembly and a lifting cylinder arranged on the supporting assembly, and the lifting cylinder is fixedly connected to the testing platform.

[0013] By adopting the above technical solution, the detection platform can be moved vertically in the vertical direction, so that the entire device can be moved closer to or away from the hair dryer.

[0014] Furthermore, the support assembly includes a fixing plate for fixing, a support rod vertically fixed on the end surface of the fixing plate, and a fixing clamp with one end sleeved on the support rod, the other end of the fixing clamp is fixedly connected to the lifting cylinder, and a plurality of fine-tuning waist holes are arranged on the end surface of the fixing plate.

[0015] By adopting the above technical solution, the fixing plate can be used as the overall support base of the device, providing sufficient plane area to install the fixing device in the workbench. The fine-tuning waist hole set on the fixing plate can fine-tune the horizontal position of the fixing plate left and right. The support rod is vertically fixed on the end face of the fixing plate, and its function is to serve as a fulcrum in the height direction. One end of the fixing clamp is sleeved on the support rod, and the other end is fixedly connected to the back of the lifting cylinder. It can be moved up and down as needed to adjust the height of the entire device.

[0016] Furthermore, it also includes a second lifting mechanism for driving the image acquisition device to lift and lower, the second lifting mechanism includes a lifting screw rod arranged in the light-shielding shell, a lifting block threadedly connected to the lifting screw rod, and an adjusting knob fixedly connected to the bottom of the lifting screw rod for rotating the lifting screw rod to drive the lifting block to lift and lower, and the lifting block is fixedly connected to the image acquisition device.

[0017] By adopting the above technical solution, the screw rod can be driven to rotate and rise by rotating the adjustment knob and the image acquisition device can be driven to move in the vertical direction, so as to accurately adjust the distance between the sensor and the heating wire to ensure clear image focus.

[0018] Furthermore, the light-shielding housing and the bottom of the detection platform are provided with wiring ports for external wiring of the image acquisition device.

[0019] By adopting the above technical solution, it is ensured that the image acquisition device can be connected to the external control system through the wiring port, and the arrangement at the bottom can prevent light from entering the interior of the light-shielding shell.

[0020] In summary, the beneficial effects of the utility model are:

[0021] 1. The utility model can ensure that the image acquisition device installed inside is not affected by external ambient light by providing a light-shielding shell and a light-shielding tube, and accurately capture the reddening of the heating wire.

[0022] 2. The utility model can isolate the heat generated by the hot air block of the hair dryer and the electric heating wire by arranging a quartz plate between the light-shielding shell and the light-shielding tube, prevent the heat from entering the light-shielding shell, and avoid condensation of water droplets.

[0023] 3. The utility model realizes dynamic heat dissipation control through the coordinated use of an air intake fan, an exhaust fan and a heat exhaust pipe, which not only ensures the heat dissipation inside the light-shielding shell, but also prevents interference from external light.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure and heat dissipation mechanism of this embodiment;

[0026] Figure 2 It is a schematic diagram of the structural decomposition of this embodiment;

[0027] Figure 3 Schematic diagram of the second lifting mechanism of this embodiment.

[0028] In the figure: 1. test table; 2. light-shielding shell; 21. connecting port; 22. wiring port; 3. light-shielding tube; 4. image acquisition device; 5. quartz plate; 6. heat dissipation mechanism; 61. air intake fan; 62. exhaust fan; 63. heat exhaust hose; 7. first lifting mechanism; 71. lifting cylinder; 72. supporting assembly; 721. fixing plate; 7211. fine-tuning waist hole; 722. supporting rod; 723. fixing clamp; 81. lifting screw rod; 82. adjusting knob; 83. lifting block. DETAILED DESCRIPTION

[0029] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0030] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like used herein to indicate directions or positional relationships are based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.

[0031] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0032] like Figures 1 to 3 As shown, a device for detecting the redness of a hair dryer heating wire is arranged below the hair dryer heating wire to be tested, and is used for detecting the redness of the heating wire; wherein this embodiment includes a detection platform 1, a light-shielding shell 2 installed on the detection platform 1, and a light-shielding cylinder 3 for connecting to the air outlet of the hair dryer, a connecting port 21 for communicating with the light-shielding cylinder 3 is arranged on the top of the light-shielding shell 2, and an image acquisition device 4 for detecting the redness of the heating wire is installed in the light-shielding shell 2, the detection end of the image acquisition device 4 is arranged toward the light-shielding cylinder 3, and a heat-insulating light-transmitting plate is arranged in the connecting port 21, and a heat dissipation mechanism 6 is arranged at at least one place around the light-shielding shell 2.

[0033] The image acquisition device 4 of this embodiment is a CCD visual sensor and is arranged in a light-shielding housing 2. The light-shielding housing 2 is a square housing made of opaque material, which can prevent external light from interfering with the detection result of the image acquisition device 4, and ensure that the image acquisition device 4 can accurately capture the red light emitted by the heating wire. Furthermore, a connecting port 21 is arranged at the top center of the light-shielding housing 2 corresponding to the position of the detection end of the image acquisition device 4, and a light-shielding cylinder 3 is arranged on the light-shielding housing 2. The bottom end of the light-shielding cylinder 3 is connected to the connecting port 21, and the top end is connected to the heating wire of the hair dryer, so that the detection end of the image acquisition device 4 corresponds to the heating wire, and further prevents external light from interfering with the detection.

[0034] like Figure 2 As shown, in this embodiment, a heat-insulating light-transmitting plate is detachably fixedly provided at the communication port 21, which is a quartz plate 5 in this embodiment. The quartz material has extremely high transparency in the visible light and infrared spectrum range, which can effectively allow the red light emitted by the heating wire to pass through without affecting the detection result of the image acquisition device 4. In addition, due to its low thermal conductivity, it can effectively prevent the conduction of heat, perform heat isolation, and no water droplets will condense on the surface.

[0035] like Figure 1 and Figure 2 As shown, the heat dissipation mechanism 6 of this embodiment includes an intake fan 61 arranged on one side of the light-shielding housing 2, an exhaust fan 62 arranged on the other side of the light-shielding housing 2 for cooperating with the intake fan 61 to ventilate and exhaust heat in the housing, and two heat exhaust hoses 63 respectively connected to one end of the air inlet of the intake fan 61 and one end of the air outlet of the exhaust fan 62. The heat dissipation fans on both sides can actively promote the flow of air and accelerate the discharge of hot air inside the light-shielding housing 2; and the heat exhaust hose 63 covers the air inlet and air outlet of the heat dissipation fans on both sides, and the heat exhaust hose 63 is bent into a certain curvature, so that light can be shielded without affecting heat exhaust.

[0036] like Figure 2 As shown, the light shielding housing 2 and the bottom of the detection platform 1 of this embodiment are provided with a wiring port 22 for external wiring of the image acquisition device 4. It is ensured that the image acquisition device 4 can be connected to the external control system (such as PLC) through the wiring port 22, and the arrangement at the bottom can prevent light from entering the light shielding housing 2 through the wiring port 22.

[0037] like Figure 1As shown, in another embodiment, the device is integrated in a multifunctional testing device, and a first lifting mechanism 7 for driving the test platform 1 to be lifted and lowered is provided on the side of the test platform 1, so that the test platform 1 can be lifted and lowered. The first lifting mechanism 7 includes a support assembly 72 and a lifting cylinder 71 provided on the support assembly 72, and the lifting cylinder 71 is fixedly connected to the test platform 1. The lifting cylinder 71 is a cylinder, which includes a connecting block fixedly connected to an internal piston rod, and the connecting block is fixedly connected to the test platform 1, so that the test platform 1 can be vertically moved in the vertical direction, so that the whole device is close to or away from the hair dryer.

[0038] like Figure 1 As shown, the support assembly 72 of this embodiment includes a fixing plate 721 for fixing, a support rod 722 vertically fixed on the end surface of the fixing plate 721, and a fixing clamp 723 with one end sleeved on the support rod 722. The other end of the fixing clamp 723 is fixedly connected to the lifting cylinder 71. A plurality of fine-tuning waist holes 7211 are provided on the end surface of the fixing plate 721. The fixing plate 721 can be used as the overall supporting base of the device, providing a sufficient plane area to install the fixing device into the workbench. The fine-tuning waist holes 7211 provided on the fixing plate 721 can fine-tune the horizontal position of the fixing plate 721 left and right. The support rod 722 is vertically fixed on the end surface of the fixing plate 721, and its function is to serve as a fulcrum in the height direction. One end of the fixing clamp 723 is sleeved on the support rod 722, and the other end is fixedly connected to the back of the lifting cylinder. It can be moved up and down as needed to adjust the height of the entire device.

[0039] like Figure 3 As shown, this embodiment also includes a second lifting mechanism for driving the image acquisition device 4 to move up and down, and the second lifting mechanism includes a lifting screw 81 disposed in the light shielding housing 2, a lifting block 83 threadedly connected to the lifting screw 81, and an adjustment knob 82 fixedly connected to the bottom of the lifting screw 81 for rotating the lifting screw 81 to drive the lifting block 83 to move up and down, and the lifting block 83 is fixedly connected to the image acquisition device 4. By rotating the adjustment knob 82, the screw can be driven to rotate and move up and down and the image acquisition device 4 can be driven to move in the vertical direction, thereby accurately adjusting the distance between the CCD visual sensor and the heating wire to ensure clear image focus.

[0040] In summary, the beneficial effects of this embodiment are as follows: this embodiment ensures that the CCD visual sensor is not disturbed by external light through the light-shielding shell 2 made of non-light-shielding material, can accurately capture the reddening of the heating wire, and improves the accuracy of detection. The quartz plate 5 effectively blocks the heat generated by the hot air and the heating wire to prevent them from affecting the image acquisition device 4, while ensuring the smooth passage of red light. The use of the cooling fan and the heat exhaust hose 63 realizes dynamic heat dissipation control, which not only ensures the heat dissipation inside the light-shielding shell 2, but also prevents interference from external light. The setting of the lifting cylinder 71 and the second lifting cylinder 71 enables the detection platform 1 and the image acquisition device 4 to adjust their heights independently.

[0041] The embodiments described above are only preferred implementation modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and modifications made by technicians in this field on the basis of the utility model shall fall within the protection scope of the present utility model.

Claims

1. A device for detecting the redness of a hair dryer heating wire, characterized in that: It includes a control platform, a detection platform, a light-shielding shell installed on the detection platform, and a light-shielding cylinder for connecting to the air outlet of the hair dryer. A connecting port for communicating with the light-shielding cylinder is arranged on the top of the light-shielding shell. An image acquisition device for detecting the redness of the heating wire and communicating with the control platform is installed in the light-shielding shell. The image acquisition device is arranged toward the light-shielding cylinder. A heat-insulating and light-transmitting plate is arranged in the connecting port. A heat dissipation mechanism is arranged at least at one place around the light-shielding shell.

2. A hair dryer heating wire redness detection device according to claim 1, characterized in that: The heat dissipation mechanism includes an intake fan arranged on one side of the light-shielding shell, an exhaust fan arranged on the other side of the light-shielding shell for cooperating with the intake fan to ventilate and exhaust heat in the shell, and two heat exhaust hoses respectively connected to one end of the intake fan inlet and one end of the exhaust fan outlet.

3. A hair dryer heating wire redness detection device according to claim 1, characterized in that: The heat-insulating light-transmitting plate is a quartz plate.

4. A hair dryer heating wire redness detection device according to claim 1, characterized in that: A first lifting mechanism for driving the testing platform to rise and fall is arranged on the side of the testing platform. The first lifting mechanism comprises a supporting assembly and a lifting cylinder arranged on the supporting assembly. The lifting cylinder is fixedly connected to the testing platform.

5. A hair dryer heating wire redness detection device according to claim 4, characterized in that: The support assembly includes a fixing plate for fixing, a support rod vertically fixed on the end surface of the fixing plate, and a fixing clamp with one end sleeved on the support rod, the other end of the fixing clamp is fixedly connected to the lifting cylinder, and a plurality of fine-tuning waist holes are arranged on the end surface of the fixing plate.

6. A hair dryer heating wire redness detection device according to claim 1, characterized in that: It also includes a second lifting mechanism for driving the image acquisition device to lift and lower, the second lifting mechanism includes a lifting screw rod arranged in the light-shielding shell, a lifting block threadedly connected to the lifting screw rod, and an adjusting knob fixedly connected to the bottom of the lifting screw rod for rotating the lifting screw rod to drive the lifting block to lift and lower, and the lifting block is fixedly connected to the image acquisition device.

7. A hair dryer heating wire redness detection device according to claim 1, characterized in that: The light-shielding housing and the bottom of the detection platform are provided with wiring ports for external wiring of the image acquisition device.

Images