Automatic detection equipment for heating core of electric hair drier

Abstract

The invention discloses automatic detection equipment for a heating core of an electric hair drier, which comprises a rack, a feeding mechanism, a heating wire spacing detection mechanism and a heating wire resistance detection mechanism, and is characterized in that the feeding mechanism comprises a moving module and a positioning jig which is arranged on the moving module and is used for bearing and positioning the heating core; the heating wire spacing detection mechanism comprises a first support frame and a CCD detection assembly which is mounted on the first support frame and is used for detecting the spacing of heating wires of the heating core; the heating wire resistance detection mechanism comprises a second supporting frame fixed in the detection station, a pair of clamping assemblies used for clamping leads at the two ends of the heating wire, a lifting unit connected with the second supporting frame and connected with the clamping assemblies in a driving mode, and a resistance measuring unit electrically connected with the clamping assemblies. The clamping assembly is provided with a conductive contact part, and the conductive contact part is used for being in electrical contact with a heating wire lead to form a detection loop. The technical scheme of the invention aims to solve the problems of low manual detection efficiency and poor precision of the heating core of the electric hair drier.

Description

Technical Field

[0002] This invention relates to the field of hair dryer testing equipment technology, and in particular to an automatic testing device for hair dryer heating elements. Background Technology

[0003] As the core heating component of a hair dryer, the spacing accuracy and resistance consistency of its internal parallel heating wires directly affect the product's heating uniformity, safety performance, and energy efficiency. Currently, the industry generally relies on traditional manual methods to test these two key parameters. Specifically, the spacing of the heating wires is often measured by operators visually comparing calipers or standard templates using a magnifying glass or projector. This method is not only inefficient but also susceptible to visual fatigue and subjective judgment, resulting in poor repeatability and inaccurate measurement results. Measuring the resistance of the heating wires typically requires workers to manually touch the two leads of the heating wire with a multimeter or a special resistance tester. This process suffers from inconsistent contact pressure and inconsistent contact point positions, introducing significant human error and failing to achieve linkage and data binding with the spacing measurement. Summary of the Invention

[0004] The main objective of this invention is to provide an automatic testing device for the heating element of a hair dryer, which aims to solve the problems of low efficiency and poor accuracy in manual testing of the heating element of a hair dryer.

[0005] To achieve the above objectives, the present invention proposes an automatic testing device for the heating element of a hair dryer, comprising: A frame, wherein the end face of the frame has a testing platform, and the testing platform has a loading station and a testing station; The feeding mechanism includes a movable module that is movably disposed between the feeding station and the inspection station, and a positioning fixture disposed on the movable module for carrying and positioning the heating core. The heating wire spacing detection mechanism includes a first support frame located in the detection station and a CCD detection component installed on the first support frame for detecting the spacing between the heating wires of the heating core. The heating wire resistance detection mechanism includes a second support frame fixed in the detection station, a pair of clamping assemblies for clamping the leads at both ends of the heating wire, a lifting unit connected to the second support frame and driving the clamping assemblies, and a resistance measuring unit electrically connected to the clamping assemblies. The clamping assemblies have conductive contact portions for making electrical contact with the heating wire leads to form a detection circuit.

[0006] In one possible implementation, the positioning fixture includes a base with a contoured groove adapted to the shape of the heating core, and a positioning structure for limiting the heating core is provided in the contoured groove.

[0007] In one possible implementation, the base includes a first base and a second base, the second base being rotatably connected to the first base via a rotating shaft, the contour groove being disposed on the end face of the second base, the first base being provided with a rotation drive structure, and the output end of the rotation drive structure being drivenly connected to the rotating shaft for driving the second base to rotate relative to the first base.

[0008] In one possible implementation, the rotary drive structure includes a drive motor and a transmission assembly located inside the first housing. The transmission assembly includes a drive gear fixedly connected to the output shaft of the drive motor and a driven gear fixedly connected to the rotary shaft, and the drive gear and the driven gear are drivenly connected.

[0009] In one possible implementation, the detection platform of the frame has a receiving hole that extends along the movement trajectory of the moving module, and the drive motor is located inside the receiving hole and can move synchronously with the positioning fixture driven by the moving module.

[0010] In one possible implementation, the mobile module includes: Two parallel linear guides; A slider is slidably connected to the linear guide rail, and the slider is fixedly connected to the positioning fixture; and A drive cylinder is fixedly mounted on the detection platform, and its output end is connected to the positioning fixture for driving the positioning fixture to move along the linear guide rail.

[0011] In one possible implementation, the detection station is equipped with a pneumatic buffer for limiting the movement of the positioning fixture to the end of its stroke.

[0012] In one possible implementation, the heating wire resistance detection mechanism further includes an adjustment component, the adjustment component comprising: An adjusting plate is fixedly connected to the output end of the lifting mechanism, and has at least one adjusting elongated hole extending in the horizontal direction. Two connecting plates are respectively connected to the adjusting plate by fixing members, which pass through the adjusting elongated hole and adjustably fix the connecting plate to the adjusting plate; Each of the clamping units is fixedly connected to one of the connecting plates.

[0013] In one possible implementation, the clamping assembly includes a gripper cylinder, and two output ends of the gripper cylinder are respectively fixedly connected to conductive blocks via insulating blocks, the conductive blocks constituting the conductive contact portion.

[0014] In one possible implementation, the feeding mechanism, the heating wire spacing detection mechanism, and the heating wire resistance detection mechanism are all provided in multiple sets and arranged along the detection platform.

[0015] This invention integrates a feeding mechanism, a heating wire spacing detection mechanism, and a heating wire resistance detection mechanism, achieving fully automated, high-precision, and high-efficiency detection of the heating wire spacing and resistance value of the hair dryer's heating element. This solves the problems of low efficiency, poor consistency, and easy misjudgment caused by traditional manual measurement. At the same time, the positioning fixture, through the use of a rotary drive structure in conjunction with a fixedly installed CCD detection component, can drive the heating element to rotate 360 ​​degrees, realizing full-circumferential, blind-angle-free image acquisition and accurate measurement of the heating wires on its surface. This solves the problems of visual obstruction and detection blind spots under fixed viewing angles and improves detection stability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the detection platform of the present invention; Figure 3 This is an enlarged schematic diagram of the mobile module of the present invention; Figure 4 This is a partially enlarged schematic diagram of the rotary drive mechanism of the present invention; Figure 5 This is a front structural schematic diagram of the heating wire resistance detection mechanism of the present invention; Figure 6 This is a schematic diagram of the back structure of the heating wire resistance detection mechanism of the present invention.

[0018] Explanation of icon numbers: 1. Frame; 11. Inspection platform; 12. Loading station; 13. Inspection station; 2. Feeding mechanism; 21. Moving module; 211. Linear guide rail; 212. Slider; 213. Drive cylinder; 22. Positioning fixture; 221. Base; 2211. First base; 2212. Second base; 222. Contouring groove; 223. Positioning structure; 3. Heating wire spacing detection mechanism; 31. First support frame; 32. CCD detection assembly; 4. Heating wire resistance detection mechanism; 41. Second support frame; 42. Clamping assembly; 421. Gripper cylinder; 422. Insulating block; 423. Conductive block; 43. Lifting unit; 5. Rotary drive structure; 51. Rotary shaft; 52. Drive motor; 53. Driving gear; 54. Driven gear; 55. Accommodating hole; 6. Pneumatic buffer; 7. Adjustment component; 71. Adjustment plate; 711. Adjustment elongated hole; 72. Connecting plate.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] To address the problems in the background technology, this invention proposes an automatic testing device for the heating element of a hair dryer, comprising: The frame 1 has a detection platform 11 on its end face, and the detection platform 11 has a loading station 12 and a detection station 13. The feeding mechanism 2 includes a movable module 21 that is movably disposed between the feeding station 12 and the inspection station 13, and a positioning fixture 22 disposed on the movable module 21 for carrying and positioning the heating core. The heating wire spacing detection mechanism 3 includes a first support frame 31 disposed in the detection station 13 and a CCD detection component 32 installed on the first support frame 31 for detecting the spacing of the heating wires of the heating core. The heating wire resistance detection mechanism 4 includes a second support frame 41 fixed in the detection station 13, a pair of clamping components 42 for clamping the leads at both ends of the heating wire, a lifting unit 43 connected to the second support frame 41 and driving the clamping components 42, and a resistance measuring unit electrically connected to the clamping components 42. The clamping components 42 have conductive contact portions for making electrical contact with the heating wire leads to form a detection circuit.

[0022] Combined with reference Figures 1 to 6As shown, in this embodiment, the frame 1 serves as the main support for the entire equipment, with a horizontally mounted detection platform 11 on its top. This detection platform 11 is precision-machined and leveled to provide a stable and reliable reference plane for each detection station 13. A protective cover is also installed above the detection platform 11 of the frame 1, with its bottom sealed or semi-sealed to the detection platform 11, forming a relatively enclosed detection chamber. This physically isolates the main detection mechanism from the external environment, effectively preventing external light from interfering with visual detection, blocking dust from affecting measurement accuracy, and reducing noise during equipment operation. An opening is provided on the side corresponding to the loading station 12, serving as a channel for loading and unloading the heating core. This opening allows the positioning fixture 22 to move smoothly in and out while minimizing the exposure of the internal space. Specifically, the loading station 12 is located in the inner area immediately adjacent to this opening. Operators or external automatic feeding devices can easily place the heating core to be tested into the positioning fixture 22, which has been moved to the feeding station 12, or remove the workpiece that has been tested through this opening. Inside the protective cover, along the direction away from the opening, that is, deep in the testing chamber, there is a testing station 13.

[0023] The loading mechanism 2 is responsible for the automated transfer and precise positioning of the heating element from the loading station 12 to the inspection station 13. It mainly includes a moving module 21 and a positioning fixture 22. The moving module 21 is fixedly installed below or to the side of the inspection platform 11. Its drive unit (e.g., a servo motor, stepper motor, or cylinder) drives a sliding component to perform linear reciprocating motion via a transmission mechanism (e.g., a lead screw, synchronous belt, or linear guide 211). The positioning fixture 22 is fixedly installed on this sliding component and moves with it. The upper surface of the positioning fixture 22 is provided with a contour groove 222 or positioning clamp that matches the outline of the heating element to be tested. Further auxiliary positioning elements such as positioning pins and elastic blocks can be added to ensure that the heating element is fixed in position during transport and after arriving at the inspection station 13, without loosening or shifting, providing a highly repeatable positioning reference for subsequent inspections.

[0024] The heating wire spacing detection mechanism 3 is positioned directly above the detection station 13 and is used for non-contact measurement of the center distance or edge distance between multiple parallel heating wires in the heating core. This mechanism mainly includes a first support frame 31 and a CCD detection component 32. The first support frame 31 is a rigid frame structure, fixedly or adjustablely mounted on the frame 1 or detection platform 11. Its height and orientation are adjustable to accommodate heating cores of different specifications. The CCD detection component 32 is securely mounted on the first support frame 31. Its core components include an industrial camera, and it can be equipped with an optical lens, an illumination source, and an image processing unit. The industrial camera is preferably equipped with a high-resolution sensor and a telecentric lens to eliminate perspective errors and ensure that the size of the heating wire image acquired at different object distances remains constant. The illumination source, such as a ring-shaped LED diffused light source, is arranged around the camera to provide uniform, shadowless illumination to the shooting area, highlighting the edge contours of the heating wires. The image processing unit receives the digital images acquired by the industrial camera, automatically identifies and locates the edge or centerline coordinates of each heating wire in the image through a built-in image processing algorithm, and then calculates the precise spacing value between any two specified heating wires.

[0025] The heating wire resistance detection mechanism 4 is correspondingly located at the detection station 13, used to automatically clamp the two ends of the heating wire and measure its resistance value. This mechanism includes a second support frame 41, a pair of clamping components 42, a lifting unit 43, and a resistance measurement unit. The second support frame 41 is fixed to the side of the detection station 13, providing a stable mounting base. The pair of clamping components 42 are arranged symmetrically on the left and right sides, respectively used to clamp the left and right ends of a single heating wire on the heating core. The lifting unit 43 (e.g., a cylinder, electric cylinder, or servo module) is mounted on the second support frame 41, with its output end pointing vertically downwards and connected to a mounting plate, which is connected to the housing portion of the two clamping components 42. Thus, the lifting unit 43 can drive the entire clamping component 42 assembly to perform vertical lifting and lowering movements, realizing the switching of the clamping components 42 between the waiting position and the clamping measurement position. Specifically, each clamping component 42 includes a gripper cylinder 421 and two conductive contact parts. Upon receiving a pneumatic or electrical signal, the gripper cylinder 421 opens and closes its two grippers. The end of each gripper does not directly contact the heating wire lead; instead, it is connected via an insulating block 422. The insulating block 422 is made of a high-insulation-strength material (such as ceramic or engineering plastic), with one end firmly connected to the gripper and the other end fitted with or fixed to a conductive block 423. This conductive block 423 can be made of a good conductor such as copper or gold-plated metal, and its contact portion facing the heating wire lead can be designed as a V-groove, a flat surface, or an arc surface to increase the contact area and ensure stable contact. The resistance measurement unit is electrically connected to the conductive blocks 423 on the two gripping assemblies 42 via wires, thus forming a complete resistance detection circuit together with the heating wire when the conductive blocks 423 reliably grip the leads at both ends of the heating wire. This unit integrates a high-precision constant current source circuit and a high-precision voltage sampling circuit. During operation, the constant current source outputs a stable, small DC test current to the detection circuit. The voltage sampling circuit precisely measures the voltage drop across the heating wire (between the two conductive blocks 423) when the test current flows through it. Finally, the main controller of the device automatically calculates the resistance of the heating wire according to Ohm's law.

[0026] This application integrates automated feeding and positioning, machine vision measurement, and automated electrical measurement to achieve fully automated, high-precision, and high-efficiency detection of the spacing and resistance value of the heating wires in hair dryer heating cores. This replaces traditional manual methods, significantly improving detection efficiency and consistency, reducing labor costs and error rates, and ensuring stable and reliable product quality. It is very suitable for deployment and application on large-scale production lines.

[0027] In one possible implementation, the positioning fixture 22 includes a base 221, on which a contour groove 222 adapted to the shape of the heating core is provided, and a positioning structure 223 for limiting the heating core is provided in the contour groove 222.

[0028] Combined with reference Figures 3 to 4 As shown, in this embodiment, the base 221 can be made of aluminum alloy or high-strength engineering plastic through precision machining. Its bottom is firmly connected to the slider 212 or mounting plate of the moving module 21 by bolts, buckles, etc., thereby ensuring smooth and reliable movement with the moving module 21. The contouring groove 222 is formed on the upper surface of the base 221. Its contour is adapted to the overall shape or key positioning features (such as the edge of its skeleton, mounting feet, etc.) of the heating core of the hair dryer to be tested, thereby achieving preliminary alignment and constraint of the heating core in the horizontal direction. To further eliminate the slight shaking or tilting that may occur after the workpiece is placed, a positioning structure 223 is also provided in the contouring groove 222. Specifically, the positioning structure 223 includes a plurality of positioning protrusions evenly distributed circumferentially along the inner wall of the contouring groove 222. The outer contour of each positioning protrusion matches the shape of a preset positioning notch on the outer wall of the heating core, and a guide slope can be provided on the top of the protrusion. When placing the heating element, the guide ramp guides it to fall smoothly and ensures that the positioning protrusion accurately embeds into the corresponding positioning notch of the heating element, thereby achieving circumferential limiting and radial positioning of the heating element within the contour groove 222. This structure effectively ensures the stable position of the heating element during the testing process, providing a reliable guarantee for the precise alignment of the heating wire with the subsequent testing mechanism.

[0029] In one possible implementation, the base 221 includes a first base body 2211 and a second base body 2212. The second base body 2212 is rotatably connected to the first base body 2211 via a rotating shaft 51. The contoured groove 222 is provided on the end face of the second base body 2212. A rotation drive structure 5 is provided inside the first base body 2211, and the output end of the rotation drive structure 5 is drivenly connected to the rotating shaft 51 to drive the second base body 2212 to rotate relative to the first base body 2211.

[0030] Combined with reference Figure 3 and Figure 4As shown, in this embodiment, the base 221 is clearly divided into two parts: a first base body 2211 and a second base body 2212. The first base body 2211 is a fixed base, and its bottom is rigidly connected to the movable module 21 (such as a slider 212) by bolts. The second base body 2212 is a movable component that carries the workpiece, and it is rotatably connected to the first base body 2211 by a rotating shaft 51. Specifically, the rotating shaft 51 is supported on the first base body 2211 by a bearing (such as a deep groove ball bearing), and its axis is vertical. The upper end of the rotating shaft 51 is connected to the center of the second base body 2212 by a key or flange, so that the second base body 2212 can rotate 360 ​​degrees around the vertical axis in the horizontal plane. The contour groove 222 is directly machined or embedded on the upper surface of the second base body 2212. Therefore, the heating element placed in the contour groove 222 will rotate together with the second base body 2212.

[0031] In one possible implementation, the rotary drive structure 5 includes a drive motor 52 and a transmission assembly located inside the first housing 2211. The transmission assembly includes a drive gear 53 fixedly connected to the output shaft of the drive motor 52 and a driven gear 54 fixedly connected to the rotary shaft 51. The drive gear 53 and the driven gear 54 are drivenly connected.

[0032] Combined with reference Figure 4As shown, in this embodiment, to achieve automated rotation control, a rotation drive structure 5 is provided in the internal cavity of the first base 2211. This structure typically includes a miniature drive motor 52 (such as a stepper motor or servo motor) and a reduction transmission mechanism. The drive motor 52 is fixedly installed inside the first base 2211, and its output torque is transmitted to the rotating shaft 51 through the transmission mechanism. One embodiment of the transmission mechanism is a gear transmission, that is, a driving gear 53 is installed on the output shaft of the drive motor 52, which meshes with a driven gear 54 fixedly installed at the lower end of the rotating shaft 51. Alternatively, a ring transmission belt is tensioned and sleeved on the driving pulley and the driven pulley to achieve non-contact power transmission between them. The control system precisely controls the drive motor 52, which can drive the rotating shaft 51 and rotate the second seat 2212 and the heating core to any preset angle for precise positioning. Alternatively, a worm gear transmission can be used, where the drive motor 52 drives the worm to rotate, and the worm drives the meshing worm wheel, thus transmitting motion and torque to the rotating shaft 51, ultimately rotating the second seat 2212 and the heating core. This embodiment solves the problems of obstructed field of view or limited detection angle that may exist in traditional fixed fixtures during inspection. For example, when the heating core structure is complex and a single shot cannot clearly capture images of all heating wires, the workpiece can be rotated so that the CCD camera can take multiple shots from different sides, ensuring no blind spots in the inspection. During resistance testing, the rotation function also helps to adjust the heating wire leads to the optimal position for contact with the clamping assembly 42.

[0033] In one possible implementation, the detection platform 11 of the frame 1 has a receiving hole 55, which extends along the movement trajectory of the moving module 21, and the drive motor 52 is located inside the receiving hole 55 and can move synchronously with the positioning fixture 22 driven by the moving module 21.

[0034] Combined with reference Figures 2 to 4As shown, in this embodiment, a receiving hole 55 is provided inside the plate-like structure of the detection platform 11 along its length direction (i.e., parallel to the movement trajectory of the moving module 21), and communicates with the mounting cavity below the detection platform 11. This receiving hole 55 is typically a long, narrow through-hole or a U-shaped groove, with a cross-section slightly larger than the outline of the drive motor 52, to ensure that the motor can be accommodated without interfering with the hole wall, while not excessively weakening the overall structural rigidity of the detection platform 11. The drive motor 52 is not fixedly installed at a static position on the frame 1, but is directly placed inside this receiving hole 55. Therefore, when the moving module 21 drives the positioning fixture 22 and its base 221 to reciprocate linearly between the loading station 12 and the detection station 13, the drive motor 52 also moves synchronously within the receiving hole 55 along the same trajectory. The power cords and control signal lines required for the motor are managed and stored using cable chains, flexible cables, or cable reels, with their travel only covering the length of the receiving hole 55, rather than the entire span of the equipment.

[0035] In one possible implementation, the mobile module 21 includes: Two parallel linear guides 211; The slider 212 is slidably connected to the linear guide rail 211, and the slider 212 is fixedly connected to the positioning fixture 22; and A drive cylinder 213 is fixedly mounted on the detection platform 11, and its output end is connected to the positioning fixture 22 for driving the positioning fixture 22 to move along the linear guide rail 211.

[0036] Combined with reference Figure 2 and Figure 3As shown, in this embodiment, the moving module 21 mainly includes linear guide rails 211, sliders 212, and a drive cylinder 213. Two linear guide rails 211 are fixed parallel to each other on the upper surface of the detection platform 11. Their mounting references are adjusted to ensure parallelism and levelness. Each linear guide rail 211 is equipped with one or more sliders 212. The sliders 212 are slidably connected to the guide rails via linear bearings or ball bearings, resulting in low friction and smooth movement. The base 221 of the positioning fixture 22 is rigidly fixed to the sliders 212 with bolts, thereby directly transmitting the linear motion of the sliders 212 to the positioning fixture 22. The guiding system formed by the sliders 212 and the guide rails provides high-rigidity motion constraints for the positioning fixture 22, ensuring that it has only a single degree of freedom along the guide rail direction during movement, effectively preventing lateral deviation. The power is provided by a drive cylinder 213. The main body of the drive cylinder 213 is fixedly mounted on the side or end of the detection platform 11 via a cylinder mounting seat. The output end of its piston rod is connected to the base 221 or slider 212 of the positioning fixture 22 via a floating joint or linkage mechanism. The use of a floating joint can compensate for minor installation errors between the cylinder axis and the guide rail direction, avoid lateral forces, and protect the cylinder and the guiding system. Depending on the stroke control accuracy requirements, the drive cylinder 213 can be selected as a double-acting cylinder with a built-in magnetic ring switch or an adjustable buffer cylinder to accurately sense and control its extension and retraction endpoints. When it is necessary to move the heating core, the control system sends a signal to the pneumatic solenoid valve of the drive cylinder 213 to drive the piston rod to extend or retract, directly pulling or pushing the positioning fixture 22 and its base 221 through the connecting parts, so that it moves smoothly and quickly from the previous station to the next station under the precise guidance of the slider 212 and the linear guide rail 211.

[0037] In one possible implementation, the detection station 13 is provided with a pneumatic buffer 6 for limiting the movement of the positioning fixture 22 to the end of its stroke.

[0038] Combined with reference Figure 3As shown, in this embodiment, to improve the stability and accuracy of the positioning fixture 22 when it moves into position and to protect the equipment from impact damage, a pneumatic buffer 6 is provided at the end of the stroke of the positioning fixture 22 within the testing station 13. Specifically, the pneumatic buffer 6 is firmly fixed to the testing platform 11 or the corresponding structure of the frame 1 by a mounting bracket, and its installation position is such that the axis of its buffer rod is directly opposite the part of the positioning fixture 22 (or its base 221, slider 212) that may collide or contact when it moves to the testing station. When the positioning fixture 22 moves to the testing station 13 under the push of the drive cylinder 213, its base 221 or a specially provided impact block will first contact the end of the buffer rod extended by the pneumatic buffer 6 before reaching the preset precise endpoint position. The pneumatic buffer 6 is filled with compressed air and is equipped with an adjustable throttle valve. When the buffer rod is pressed in by an external force, the internal chamber volume decreases, the air is compressed and discharged through the throttle orifice. This process effectively converts the kinetic energy of the moving parts into heat energy and dissipates it, thereby producing a non-rigid resistance effect on the moving parts that is opposite to the direction of movement and has an adjustable damping force.

[0039] In one possible implementation, the heating wire resistance detection mechanism 4 further includes an adjustment component 7, the adjustment component 7 comprising: An adjusting plate 71 is fixedly connected to the output end of the lifting mechanism, and has at least one adjusting elongated hole 711 extending in the horizontal direction. Two connecting plates 72 are respectively connected to the adjusting plate 71 by fixing members. The fixing members pass through the adjusting elongated hole 711 and adjustably fix the connecting plate 72 to the adjusting plate 71. Each of the clamping units is fixedly connected to one of the connecting plates 72.

[0040] Combined with reference Figure 5 and Figure 6As shown, in this embodiment, to achieve flexible and precise adjustment of the spacing between a pair of clamping units in the heating wire resistance detection mechanism 4, to adapt to the different distances between the leads at both ends of the heating wire of different models of heating cores, the mechanism also includes an adjustment component 7. This component is a key intermediate structure connecting the lifting mechanism and the clamping units, specifically composed of an adjustment plate 71, a connecting plate 72, and fixing components. The adjustment plate 71 is a rectangular or square metal plate (such as a steel plate or aluminum plate), and its top surface is rigidly fixed to the piston rod output end mounting plate of the lifting mechanism (such as a cylinder or electric cylinder) by bolts, so that it can move vertically with the entire lifting mechanism. At least one horizontally extending adjustment elongated hole 711 is machined on the surface of the adjustment plate 71. This elongated hole is usually a waist-shaped hole or an oblong hole, and its length direction is parallel to the line direction connecting the two clamping units that need to be adjusted. The length is designed according to the adjustment range to be covered. There are two connecting plates 72, which are L-shaped metal blocks. Each connecting plate 72 has a through hole on its horizontal part (bottom plate). The fasteners (typically cylindrical head bolts, which can be fitted with lock nuts or wing nuts) pass sequentially through the through holes on the connecting plate 72 and the adjusting elongated holes 711 on the adjusting plate 71. By tightening the nuts, the connecting plate 72 can be adjusted and fixed to any desired position in the adjusting elongated holes 711. Loosening the fasteners allows the connecting plate 72 to slide along the length of the adjusting elongated holes 711. The housing or mounting base of each clamping unit (i.e., the assembly containing the gripper cylinder 421, the insulating block 422, and the conductive block 423) is respectively bolted to a vertical portion (side plate) of one of the connecting plates 72. Therefore, the horizontal distance between two clamping units is entirely determined by the relative position of the connecting plates 72 to which they are connected in the adjusting elongated holes 711.

[0041] In one possible implementation, the clamping assembly 42 includes a gripper cylinder 421, and the two output ends of the gripper cylinder 421 are respectively fixedly connected to a conductive block 423 via an insulating block 422, the conductive block 423 constituting the conductive contact portion.

[0042] Combined with reference Figure 5 and Figure 6As shown, in this embodiment, the gripper cylinder 421 is fixed to the lifting mechanism or adjusting assembly 7 by a mounting plate. Its two output ends (i.e., grippers) that can move in opposite directions or backwards constitute the basis of the gripping action. To achieve reliable electrical contact with the heating wire lead and to strictly prevent short circuits between the detection circuit and the mechanical body of the equipment, an insulating block 422 is provided at the end of each output end. The insulating block 422 is preferably made of high-strength, high-insulation engineering plastic or ceramic material, and it is firmly fixed to the end of the gripper by means of threaded connection, snap-fit, or adhesive. The conductive contact part is specifically embodied in two conductive blocks 423. Each conductive block 423 is preferably made of a material with excellent conductivity such as brass, copper, or gold-plated metal, and it is tightly and firmly installed on the outer end face of the corresponding insulating block 422 by means of bolts, inlay, or adhesive. The contact surface of the conductive block 423 facing the heating wire lead can be designed as a V-groove, an arc surface, or a plane to increase the contact area, adapt to different wire diameters, and provide an anti-slip effect. This assembly, consisting of a gripper cylinder 421, an insulating block 422, and a conductive block 423, forms a complete clamping unit. When the gripper cylinder 421 is activated, it drives the two insulating blocks 422 and the conductive block 423 mounted on them to open and close synchronously, thereby achieving the clamping and release of the heating wire lead.

[0043] In one possible implementation, the feeding mechanism 2, the heating wire spacing detection mechanism 3, and the heating wire resistance detection mechanism 4 are each provided in multiple sets and arranged along the detection platform 11.

[0044] Combined with reference Figure 1 and Figure 2 As shown in this embodiment, each of the feeding mechanism 2, the heating wire spacing detection mechanism 3, and the heating wire resistance detection mechanism 4 is provided in multiple sets. These functionally identical mechanism sets are arranged linearly at equal intervals along the width direction of the detection platform 11, forming an integrated multi-station detection production line. Each unit includes an independent set of feeding, visual inspection, and resistance detection functional modules, effectively improving detection efficiency.

[0045] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application 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 accompanying 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.

[0046] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic detection apparatus for a heating element of an electric hair dryer, characterized by, The utility model relates to a kind of heat-generating wire detection device, including: Rack, the detection platform of the rack end face has, and the detection platform has feeding station and detection station; Feeding mechanism, including movable between the feeding station and detection station Mobile module and be set on mobile module for carrying and positioning heat-generating core positioning jig; Heating wire spacing detection mechanism, including first support frame in the detection station and install to the first support frame for detecting the heating wire spacing of heat-generating core CCD detection component; Heating wire resistance detection mechanism, including fixed in the detection station second support frame, a pair of for clamping heating wire two end lead wire clamping component, connecting the second support frame and driving connection clamping component lifting unit and with clamping component electric connection resistance measuring unit, wherein, the clamping component has electrically conductive contact part, the electrically conductive contact part is used to contact with heating wire lead wire electrically to form detection loop.

2. The automatic detection apparatus for a heating element of an electric hair dryer according to claim 1, wherein The positioning jig includes a base, the base is provided with a contoured groove matched with the shape of the heat-generating core, and a positioning structure is arranged in the contoured groove for limiting the heat-generating core.

3. The automatic detection apparatus for a heating element of an electric hair dryer according to claim 2, wherein The base includes a first seat body and a second seat body, the second seat body is rotatably connected to the first seat body through a rotating shaft, the contoured groove is arranged on the end face of the second seat body, and a rotating drive structure is arranged in the first seat body, and the output end of the rotating drive structure is drivingly connected to the rotating shaft for driving the second seat body to rotate relative to the first seat body.

4. The automatic detection apparatus for a heating element of an electric hair dryer according to claim 3, wherein The rotating drive structure includes a drive motor and a transmission assembly located in the first seat body, the transmission assembly includes a driving gear fixedly connected to the output shaft of the drive motor and a driven gear fixedly connected to the rotating shaft, and the driving gear and the driven gear are drivingly connected.

5. The automatic detection apparatus for a heating element of an electric hair dryer according to claim 4, wherein The detection platform of the rack is provided with a receiving hole, the receiving hole is arranged along the movement track of the mobile module, and the drive motor is located in the receiving hole and can move synchronously with the mobile module to move the positioning jig.

6. The automatic detection apparatus for a heating element of an electric hair dryer according to claim 1, wherein The mobile module includes: Two parallel straight linear guides; A sliding block slidingly connected to the linear guides, and the sliding block is fixedly connected to the positioning jig; and A drive cylinder fixedly arranged on the detection platform, and the output end of the drive cylinder is drivingly connected to the positioning jig for driving the positioning jig to move along the linear guides.

7. The automatic detection apparatus for a heating element of an electric hair dryer according to claim 6, wherein A pneumatic buffer is arranged in the detection station for limiting the movement of the positioning jig when it reaches the end of the stroke.

8. The automatic detection apparatus for a heating element of an electric hair dryer according to claim 1, wherein The heating wire resistance detection mechanism further includes an adjusting assembly, and the adjusting assembly includes: An adjusting plate fixedly connected to the output end of the lifting mechanism, and at least one adjusting long hole extending in the horizontal direction is arranged on the adjusting plate; Two adapter plates connected to the adjusting plate by fixing members, the fixing members pass through the adjusting long hole and adjustably fix the adapter plates on the adjusting plate; Each clamping unit is fixedly connected to one of the adapter plates.

9. The automatic detection apparatus for a heating element of an electric hair dryer according to claim 1, wherein The clamping assembly includes a jaw cylinder, and two output ends of the jaw cylinder are fixedly connected to electrically conductive blocks through insulating blocks, and the electrically conductive blocks constitute the electrically conductive contact part.

10. The automatic detection apparatus for a heating element of an electric hair dryer according to any one of claims 1 to 9, characterized in that, The feeding mechanism, the heating wire spacing detection mechanism and the heating wire resistance detection mechanism are all provided with multiple groups and are arranged along the detection platform.

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