A coil former phenolic piece quality detection device and method

Abstract

The application discloses a coil framework phenolic piece quality detection device and method, and relates to the technical field of quality detection equipment. The device comprises a rack main body, a first detection unit, a second detection unit and a third detection unit. The first detection unit is arranged in the rack main body and is used for applying a traction force to pins on a coil framework phenolic piece and detecting the fastening of the pins; the second detection unit is arranged at the upper end of the rack main body and is used for detecting the compression strength of the coil framework phenolic piece; and the third detection unit is arranged between the first detection unit and the second detection unit and is used for detecting the outer shape size of the coil framework phenolic piece. The first detection unit in the supporting seat can automatically and synchronously detect all the pins, the clamping mechanisms and the connecting mechanisms corresponding to the pins are independently arranged, the traditional manual sampling inspection is replaced, the detection efficiency and the tension consistency are improved, the tension value and the displacement state of the sliding plate in the traction process are monitored in real time by cooperating with the tension sensor and the contact sensor, and the problem that the detection force value is not uniform and the precision is poor is solved.

Description

Technical Field

[0001] This invention relates to the field of quality testing equipment technology, and in particular to a device and method for quality testing of phenolic coil bobbins. Background Technology

[0002] The phenolic coil bobbin is a core structural component in electronic components such as transformers and inductors. It is usually injection molded from phenolic molding compound, and the metal leads extending from its bottom are used for soldering to the circuit board. The strength of the lead connection directly affects the electrical reliability of the component.

[0003] Currently, routine inspections of coil bobbins in the industry mainly include dimensional inspection and withstand voltage testing. However, specialized testing for the firmness of the connection between the pins and the bobbin body often relies on manual sampling, involving manual pulling tests. This method is inefficient and struggles to ensure consistent force values. Defects such as loose pins or insufficient bonding strength can easily lead to quality problems such as poor soldering, poor contact, or even open circuits. Therefore, this application proposes a quality inspection device and method for phenolic resin coil bobbins to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a quality inspection device and method for phenolic coil bobbin components, which solves the technical problems of low efficiency and poor accuracy in the prior art, which relies on manual sampling to detect the pin firmness of phenolic coil bobbin components.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a quality inspection device for phenolic coil bobbin components, comprising, The main body of the frame includes a support base, support legs fixedly installed at the bottom of the support base, an operation screen installed on the support base for displaying detection data and inputting control commands, and a through hole opened on the upper side wall of the support base. The upper end of the support base is connected to a support frame for placing the phenolic coil bobbin, and the support frame is located above the through hole. The first detection unit, located inside the support base, is used to apply traction force to the pins on the phenolic component of the coil frame and to detect the pin firmness. The second detection unit is located at the upper end of the support base and is used to detect the compressive strength of the phenolic component of the coil frame. The third detection unit is located between the support base and the second detection unit. The third detection unit is used for the dimensional detection of the phenolic coil bobbin.

[0006] Preferably, the first detection unit includes an outer frame fixed to the inner wall of the support base, a traction mechanism disposed on the outer frame, a connecting mechanism located above the traction mechanism, and a clamping mechanism located on the connecting mechanism. The clamping mechanism includes two clamping rods, each with a movable cavity on its inner side. Adjacent sidewalls of the two clamping rods are provided with mating grooves. A first pressure sensor is installed at the bottom of each mating groove. A clamping block is installed inside each mating groove, and a second spring is installed inside the mating groove. The two ends of the second spring are connected to the bottom of the mating groove and the sidewall of the clamping block, respectively. Adjacent ends of the two clamping blocks are each provided with clamping grooves. Laterally arranged anti-slip toothed grooves are provided on the inner wall of each clamping groove. Movable holes are provided on each clamping block, and limit rods are installed inside the movable holes. The upper and lower ends of the limit rods are fixedly connected to the upper and lower inner walls of the mating groove, respectively.

[0007] Preferably, the traction mechanism includes a movable plate, the movable plate having a transverse limiting slide, and a limiting slider slidably connected within the limiting slide; The connecting mechanism includes a tension detection sensor fixed to the upper end of the limiting slider and a pull rod fixed to the upper end of the tension detection sensor. The upper end of the pull rod passes through the side wall of the movable cavity and is connected to a sliding plate. The sliding plate is slidably connected to the inner wall of the movable cavity. A contact sensor is provided at the top of the inner wall of the movable cavity. A first spring is fixedly connected to the bottom of the inner wall of the movable cavity. The upper end of the first spring is fixedly connected to the bottom of the sliding plate. The first spring is located outside the pull rod. A limiting tube is fitted onto the pull rod, and the lower end of the limiting tube is connected to the inner wall of the lower side of the movable cavity.

[0008] Preferably, the traction mechanism further includes an electric push rod fixed to the outer frame, the output end of which passes through the side wall of the outer frame and is connected to the lower end of the moving plate; A motor is fixedly connected to the outer wall of the outer frame, and a drive gear is fixedly connected to the output end of the motor. A moving rod and a lead screw are provided on the inner side of the outer frame. One end of the lead screw is rotatably connected to the inner side wall of the outer frame, and the other end of the lead screw passes through the moving rod and the side wall of the outer frame in sequence and is fixedly connected to a driven gear. The drive gear meshes with the driven gear. A limit hole is provided on the moving rod, and a clamping rod is located inside the limit hole. The clamping rod is slidably connected to the limit hole. The threads at the connection points between the movable rods connected to the two clamping rods and the lead screw are opposite in direction.

[0009] Preferably, the second detection unit includes a fixed frame connected to the support base and a cylinder fixed to the upper end of the support frame. The output end of the cylinder points to the support frame and is connected to a connecting frame. A top plate is provided on the inner side of the connecting frame. A first sliding rod is connected to the lower end of the top plate. The lower end of the first sliding rod passes through the bottom of the connecting frame and is connected to a second pressure detection sensor. The lower end of the second pressure detection sensor is connected to an abutment plate. A third spring is fixedly connected to the bottom of the inner wall of the connecting frame. The upper end of the third spring is connected to the bottom surface of the top plate. The third spring is located outside the first sliding rod. A contact switch is installed on the mounting bracket.

[0010] Preferably, the upper end of the support frame is provided with a position groove for placing the phenolic coil bobbin part, and the bottom of the position groove is provided with a position hole for placing the pin of the phenolic coil bobbin part, and the position hole is located between the two clamping rods; A positioning plate is provided above the positioning slot. A third sliding rod is fixedly connected to the lower end of the positioning plate. The lower end of the third sliding rod passes through the lower side wall of the positioning slot and is connected to a baffle. A fifth spring is sleeved on the third sliding rod. The upper and lower ends of the fifth spring are respectively connected to the adjacent side walls of the support frame and the baffle.

[0011] Preferably, the third detection unit includes a limiting frame and a side plate fixed on the support base. A movable frame is slidably connected to the inner side of the limiting frame. The support frame is located between the limiting frame and the side plate. Two first infrared ranging sensors are provided on the side plate. A contact plate and a position plate are provided on the movable frame. The inner wall of the limiting frame is provided with a second sliding rod. One end of the second sliding rod is connected to the inner wall of the limiting frame, and the other end of the second sliding rod passes through the movable frame and is connected to the inner wall of the other side of the limiting frame. A fourth spring is sleeved on the second sliding rod, and the two ends of the fourth spring are respectively connected to the side wall of the movable frame and the limiting frame.

[0012] Preferably, the contact plate and the position plate are respectively disposed behind the detection ends of the two first infrared ranging sensors, the contact plate is located on the side of the support frame away from the side plate, and the side walls of the contact plate and the position plate near the side plate are located in the same plane.

[0013] Preferably, the third detection unit further includes a second infrared ranging sensor, which is fixedly connected to the second detection unit, and the detection end of the second infrared ranging sensor points towards the support frame.

[0014] A method for quality inspection of phenolic coil bobbin components includes the following steps: S1. Place the phenolic coil bobbin on the support frame, so that its pins pass through the position hole, touch the contact switch to start the cylinder, drive the connecting frame and the abutment plate to move down, the abutment plate presses the phenolic coil bobbin, and at the same time the third spring is stretched to achieve pre-pressing positioning. S2. The electric push rod pushes the moving plate up, placing the two clamping rods on both sides of the pin. The motor drives the drive gear to rotate the driven gear and the lead screw, bringing the two moving rods closer to each other. This causes the clamping blocks on the two clamping rods to clamp the pin. Then the electric push rod moves in the opposite direction, causing the clamping mechanism to move down and apply a downward pulling force to the pin to verify the connection firmness of the pin. S3. The two first infrared ranging sensors measure the distance from their detection ends to the contact plate and the position plate, respectively. The difference between the two is the size of the front and rear end faces of the phenolic coil component at the position where the coil is wound. The second infrared ranging sensor measures the distance from its detection end to the upper end face of the positioning plate, which is the size of the upper and lower end faces at the position where the coil is wound. The measured size is compared with the preset standard value to determine whether the size is qualified. S4. The cylinder drives the contact plate to continue to descend. After the upper part of the top plate contacts the upper side wall of the connecting frame, the cylinder continues to apply pressure. The second pressure detection sensor records the pressure value in real time. If the maximum pressure value reaches the preset threshold and the workpiece is not broken or obviously deformed, the compressive strength is deemed to be qualified. S5. The operation screen summarizes the detection data from the first detection unit, the second detection unit, and the third detection unit, comprehensively determines whether the workpiece is qualified, and outputs the detection results.

[0015] Compared with related technologies, the glass fiber composite felt cutting device provided by the present invention has the following advantages: 1. Through the first detection unit set inside the support base, all pins of the phenolic coil bobbin can be automatically pulled and tested simultaneously. The clamping mechanism and connecting mechanism corresponding to each pin are set independently and do not interfere with each other, which replaces the traditional manual pulling and sampling inspection method, effectively improving the detection efficiency. At the same time, it ensures the consistency and accuracy of the pulling force in each test. With the help of the pulling force detection sensor and the contact sensor, the pulling force value and the displacement state of the sliding plate can be monitored in real time during the pulling process, solving the problems of inconsistent force values ​​and poor detection accuracy in manual detection.

[0016] 2. A second detection unit, positioned above the support base, drives the connecting frame downwards via a cylinder, causing the abutment plate to apply pressure to the phenolic coil skeleton component. A second pressure sensor detects the pressure value in real time, achieving automated testing of compressive strength and effectively preventing deformation or damage during subsequent assembly and use due to insufficient compressive strength. Furthermore, a third detection unit, positioned between the support base and the second detection unit, uses a first and second infrared ranging sensor to measure the external dimensions of the phenolic coil skeleton component, enabling rapid dimensional detection and ensuring a high product dimensional compliance rate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention from another angle; Figure 3 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the outer frame position of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of the outer frame position cross-section from another angle of the present invention; Figure 6 This is a schematic diagram showing the location of the connecting mechanism of the present invention; Figure 7 This is a three-dimensional cross-sectional structural diagram of the clamping rod of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle; Figure 9 For the present invention Figure 7 Enlarged view at point B in the middle; Figure 10 This is a schematic diagram of the three-dimensional structure of the clamping block of the present invention; Figure 11 This is a schematic diagram of the position structure of the second detection unit of the present invention; Figure 12 This is a schematic diagram of the three-dimensional structure of a partial second detection unit of the present invention; Figure 13 This is a three-dimensional cross-sectional view of the through hole location of the present invention; Figure 14 For the present invention Figure 13 Enlarged view at point C; Figure 15 This is a schematic diagram of the three-dimensional structure of a partial third detection unit of the present invention.

[0018] In the picture: 1. Main frame; 101. Support base; 102. Control panel; 103. Support legs; 104. Through hole; 2. First detection unit; 21. Outer frame; 22. Traction mechanism; 2201. Electric push rod; 2202. Moving plate; 2203. Limiting slide; 2204. Limiting slider; 23. Connecting mechanism; 2301. Tension detection sensor; 2302. Pull rod; 2303. Contact sensor; 2304. Sliding plate; 2305. First spring; 2306. Limiting tube; 24. Moving rod; 2401. Limiting hole; 25. Lead screw; 26. Driven gear; 27. Motor; 28. Driving gear; 29. ​​Clamping mechanism; 2901. Clamping rod; 2902. Movable cavity; 2903. Mating groove; 2904. Clamping block; 2905. First pressure detection sensor; 2906. Second spring; 2907. Movable hole; 2908. Limiting rod; 2909. Clamping groove; 2910. Anti-slip tooth groove; 3. Second detection unit; 301. Fixing frame; 302. Cylinder; 303. Connecting frame; 304. Top plate; 305. First sliding rod; 306. Third spring; 307. Second pressure detection sensor; 308. Abutment plate; 309. Contact switch; 4. Third detection unit; 401. Limiting frame; 402. Side plate; 403. First infrared ranging sensor; 404. Moving frame; 405. Second sliding rod; 406. Fourth spring; 407. Contact plate; 408. Position plate; 409. Second infrared ranging sensor; 5. Support frame; 51. Position groove; 52. Position hole; 53. Positioning plate; 54. Third sliding rod; 55. Baffle; 56. Fifth spring. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] Example 1:

[0021] Please see Figures 1-10 This invention provides a technical solution: a quality inspection device for phenolic coil bobbin components, comprising, The main frame 1 includes a support base 101, support legs 103 fixedly disposed at the bottom of the support base 101, an operation screen 102 disposed on the support base 101 for displaying detection data and inputting control commands, and a through hole 104 opened in the upper side wall of the support base 101. The upper end of the support base 101 is connected to a support frame 5 for placing the phenolic coil bobbin, and the support frame 5 is located above the through hole 104. The operation screen 102 is used for operators to set the detection parameters of each pressure detection sensor and display the detection data in real time. The through hole 104 is used for the pins of the phenolic coil bobbin to pass through and extend into the support base 101 so that the first detection unit 2 can clamp and pull the pins for detection. The first detection unit 2 is located inside the support base 101 and is used to apply traction force to the pins on the phenolic component of the coil frame and detect the pin firmness. The second detection unit 3 is located at the upper end of the support base 101 and is used to detect the compressive strength of the phenolic component of the coil bobbin. The third detection unit 4 is located between the support base 101 and the second detection unit 3. The third detection unit 4 is used for the size detection of the coil bobbin phenolic component. The first detection unit 2 includes an outer frame 21 fixed on the inner wall of the support base 101, a traction mechanism 22 disposed on the outer frame 21, a connecting mechanism 23 located above the traction mechanism 22, and a clamping mechanism 29 located on the connecting mechanism 23. The clamping mechanism 29 is used to clamp and fix the pin that passes through the position hole 52 and extends into the support base 101. The traction mechanism 22 is used to provide traction power to drive the connecting mechanism 23 and the clamping mechanism 29 to move downward, thereby applying a downward traction force to the pin. The connecting mechanism 23 is used to transmit the traction force to the clamping mechanism 29 during the traction process and detect the tension value in real time. The clamping mechanism 29 includes two clamping rods 2901, which are respectively disposed on both sides of the pin. An active cavity 2902 is provided inside each clamping rod 2901. Adjacent sidewalls of the two clamping rods 2901 are provided with mating grooves 2903. A first pressure detection sensor 2905 is disposed at the bottom of the mating groove 2903. A clamping block 2904 is disposed inside the mating groove 2903, providing an installation and movement channel for the clamping block 2904. A second spring 2906 is disposed inside the mating groove 2903, with its two ends connected to the bottom of the mating groove 2903 and the sidewall of the clamping block 2904, respectively. Under the action of the second spring 2906, the clamping block 2904 remains in a non-contact state with the first pressure detection sensor 2905 in its natural state. The two clamping blocks 2904... Each adjacent end is provided with a clamping groove 2909. The clamping groove 2909 adopts a V-shaped structure groove. The V-shaped structure grooves on the left and right sides facilitate clamping and limiting the pin. The inner wall of the clamping groove 2909 is provided with a horizontally arranged anti-slip tooth groove 2910. While clamping, the horizontally arranged anti-slip tooth groove 2910 is used to prevent the pin from sliding relative to the clamping block 2904 during the downward pulling of the clamping block 2904 by the traction mechanism 22. The clamping block 2904 is provided with a strip-shaped movable hole 2907. A limit rod 2908 is provided on the inner side of the movable hole 2907. The upper and lower ends of the limit rod 2908 are fixedly connected to the upper and lower inner walls of the mating groove 2903, respectively. The position of the clamping block 2904 is limited by the cooperation between the limit rod 2908 and the mating groove 2903, preventing the clamping block 2904 from sliding out of the mating groove 2903. The traction mechanism 22 includes a movable plate 2202, on which a transverse limiting slide 2203 is provided. A limiting slider 2204 is slidably connected in the limiting slide 2203. The movable plate 2202 is used to support the connecting mechanism 23 and drive it to move up and down. The limiting slide 2203 and the limiting slider 2204 cooperate to limit the connecting mechanism 23 from sliding in the transverse direction, so as to ensure that the two clamping rods 2901 in the clamping mechanism 29 maintain the stability of transverse movement during clamping and separation. The connecting mechanism 23 includes a tension detection sensor 2301 fixed to the upper end of the limiting slider 2204 and a pull rod 2302 fixed to the upper end of the tension detection sensor 2301. The upper end of the pull rod 2302 passes through the side wall of the movable cavity 2902 and is connected to a sliding plate 2304. The sliding plate 2304 is slidably connected to the inner wall of the movable cavity 2902. A contact sensor 2303 is provided at the top of the inner wall of the movable cavity 2902, and a first spring 2305 is fixedly connected to the bottom of the inner wall of the movable cavity 2902. The upper end of the first spring 2305 is fixedly connected to the bottom of the sliding plate 2304. The first spring 2305 is located outside the pull rod 2302. The tension detection sensor 2301 is used to detect the tension value in real time during the application of traction force by the traction mechanism 22. When the tension value reaches a predetermined value, traction is paused to determine whether the pin has become loose or... The separation mechanism involves the pull rod 2302 transmitting the traction force from the tension detection sensor 2301 to the sliding plate 2304. When the sliding plate 2304 contacts the limiting tube 2306, it slides within the movable cavity 2902, transmitting the traction force to the clamping rod 2901, thereby applying a downward traction force to the pin. The contact sensor 2303 detects whether the upper surface of the sliding plate 2304 contacts the upper inner wall of the movable cavity 2902. When the contact sensor 2303 detects contact or the tension detection sensor 2301 detects an abnormal drop in tension value, it indicates that the pin has abnormally separated from the phenolic resin component of the coil frame. The first spring 2305 provides buffering during the traction process, preventing instantaneous impact damage to the pin caused by rigid traction. Simultaneously, after the first detection unit 2 completes its detection, it pushes the sliding plate 2304 upwards using its own elastic force to reset it. A limiting tube 2306 is sleeved on the pull rod 2302. The lower end of the limiting tube 2306 is connected to the inner wall of the lower side of the movable cavity 2902. The limiting tube 2306 is used to limit the extreme position of the sliding plate 2304 sliding downward. When the lower end face of the sliding plate 2304 contacts the upper end face of the limiting tube 2306, the electric push rod 2201 continues to apply downward pulling force. At this time, the pulling force is completely transmitted to the clamping rod 2901 and the pin. The traction mechanism 22 also includes an electric push rod 2201 fixed on the outer frame 21. The output end of the electric push rod 2201 passes through the side wall of the outer frame 21 and is connected to the lower end of the moving plate 2202. The electric push rod 2201 is used to provide traction power. When its output end extends, it drives the moving plate 2202 to move downward, thereby transmitting the traction force to the clamping rod 2901 and the pin in sequence through the limit slider 2204, the tension detection sensor 2301, the pull rod 2302 and the sliding plate 2304, so as to apply a downward traction force to the pin. When the output end of the electric push rod 2201 retracts, it drives the moving plate 2202 to move upward, so that the clamping mechanism 29 is reset upward. A motor 27 is fixedly connected to the outer wall of the outer frame 21. A drive gear 28 is fixedly connected to the output end of the motor 27. A moving rod 24 and a lead screw 25 are provided on the inner side of the outer frame 21. One end of the lead screw 25 is rotatably connected to the inner wall of the outer frame 21, and the other end of the lead screw 25 passes through the moving rod 24 and the side wall of the outer frame 21 in sequence, and is fixedly connected to a driven gear 26. The drive gear 28 meshes with the driven gear 26. A limiting hole 2401 is provided on the moving rod 24. A clamping rod 2901 is located inside the limiting hole 2401 and is slidably connected to the limiting hole 2401. The threads of the moving rod 24 and the lead screw 25 connected to the two clamping rods 2901 are opposite in direction. When motor 27 rotates forward, the engagement of the driving gear 28 and the driven gear 26 drives the lead screw 25 to rotate in the forward direction. When the lead screw 25 rotates in the forward direction, it drives the two moving rods 24 to move closer to each other along the axial direction of the lead screw 25. When the two moving rods 24 move closer to each other, they push the clamping rod 2901 through the limiting hole 2401 to drive the clamping block 2904 to move towards each other, thereby clamping the pin. When motor 27 rotates in reverse, it drives the lead screw 25 to rotate in the reverse direction, and the two moving rods 24 move away from each other. The clamping rod 2901 drives the clamping block 2904 to move away from each other, thereby releasing the pin. The limiting hole 2401 is used for the clamping rod 2901 to pass through and to limit the sliding direction of the clamping rod 2901, so that the clamping rod 2901 only slides in the longitudinal direction.

[0022] Example 2:

[0023] Please see Figures 11-15As shown, based on Embodiment 1, the present invention provides a technical solution: the second detection unit 3 includes a fixed frame 301 connected to the support base 101 and a cylinder 302 fixed to the upper end of the support frame 5. The output end of the cylinder 302 points to the support frame 5 and is connected to a connecting frame 303. A top plate 304 is provided on the inner side of the connecting frame 303. A first sliding rod 305 is connected to the lower end of the top plate 304. The lower end of the first sliding rod 305 passes through the bottom of the connecting frame 303 and is connected to a second pressure detection sensor 307. The lower end of the second pressure detection sensor 307 is connected to an abutment plate 308. A third spring 306 is fixedly connected to the bottom of the inner wall of the connecting frame 303. The upper end of the third spring 306 is connected to the top plate 304. The bottom surface of 04 is connected, and the third spring 306 is located outside the first sliding rod 305. In the pre-fixing stage, when the second pressure detection sensor 307 detects that the pre-fixing force has been reached, the operator can remove his hand. At this time, the phenolic coil skeleton is pre-fixed. In the compressive strength detection stage, the cylinder 302 continues to apply downward pressure. When the second pressure detection sensor 307 reaches the preset detection pressure, it stops to observe whether the product is damaged. At the same time, the pressure value detected by the second pressure detection sensor 307 is used to judge. When the pressure value drops suddenly, it is determined that the product is damaged. The third spring 306 is used to provide buffer during the pressure application process to avoid the abutment plate 308 causing instantaneous impact damage to the phenolic coil skeleton. The mounting bracket 301 is equipped with a contact switch 309 located on the rear side of the third detection unit 4. The contact switch 309 is used to start the detection process of the second detection unit 3 after the operator touches it. When the operator finishes placing the phenolic coil frame, touching the contact switch 309 will trigger the cylinder 302 to start the automated detection. The upper end of the support frame 5 is provided with a position groove 51 for placing the phenolic coil bobbin part, and the bottom of the position groove 51 is provided with a position hole 52 for placing the pin of the phenolic coil bobbin part. The position hole 52 is located between two clamping rods 2901. The position groove 51 is used to limit the placement of the main body of the phenolic coil bobbin part to ensure that the position of the phenolic coil bobbin part is stable during the testing process. The position hole 52 is used for the pin at the bottom of the phenolic coil bobbin part to pass through and extend downward into the interior of the support base 101, so that the pin is located between the two clamping rods 2901, so that the clamping mechanism 29 can clamp the pin and perform subsequent traction testing. A positioning plate 53 is provided above the positioning slot 51. A third sliding rod 54 is fixedly connected to the lower end of the positioning plate 53. The lower end of the third sliding rod 54 passes through the lower side wall of the positioning slot 51 and is connected to a baffle 55. A fifth spring 56 is sleeved on the third sliding rod 54. The upper and lower ends of the fifth spring 56 are respectively connected to the adjacent side walls of the support frame 5 and the baffle 55. During the detection process, the upper end face of the positioning plate 53 contacts the lower end face of the winding position on the phenolic component of the coil skeleton, thereby providing a measurement reference surface for the first infrared ranging sensor 403. The third detection unit 4 includes a limiting frame 401 and a side plate 402 fixed on the support base 101. A movable frame 404 is slidably connected to the inner side of the limiting frame 401. The support frame 5 is located between the limiting frame 401 and the side plate 402. Two first infrared ranging sensors 403 are provided on the side plate 402. A contact plate 407 and a position plate 408 are provided on the movable frame 404. The limiting frame 401 is used to guide and limit the sliding of the movable frame 404. The movable frame 404 slides in the front and back direction to drive the contact plate 407 to move closer to or away from the support frame 5. The two first infrared ranging sensors 403 respectively detect the distance to the front end face of the contact plate 407 and the distance to the position plate 408. The difference between the two measured values ​​is the distance between the front and back end faces of the coil skeleton phenolic component at the position for winding the coil. The inner wall of the limiting frame 401 is provided with a second sliding rod 405. One end of the second sliding rod 405 is connected to the inner wall of the limiting frame 401, and the other end of the second sliding rod 405 passes through the moving frame 404 and is connected to the inner wall of the other side of the limiting frame 401. A fourth spring 406 is sleeved on the second sliding rod 405. The two ends of the fourth spring 406 are connected to the side walls of the moving frame 404 and the limiting frame 401, respectively. The second sliding rod 405 is used to guide the moving frame 404 to slide smoothly in the front and back direction. The fourth spring 406 is a compression spring to ensure that the contact plate 407 can always abut against the side wall of the coil skeleton phenolic component during the detection process. The contact plate 407 and the position plate 408 are respectively disposed behind the detection ends of the two first infrared ranging sensors 403. The contact plate 407 is located on the side of the support frame 5 away from the side plate 402. The side walls of the contact plate 407 and the position plate 408 near the side plate 402 are in the same plane. The front end face of the contact plate 407 is used to abut against the side wall of the coil skeleton phenolic component to determine the reference measurement surface. The position plate 408 is used as a reference reflective surface for the first infrared ranging sensor 403 to perform distance measurement. The side walls of the contact plate 407 and the position plate 408 near the side plate 402 are in the same plane, ensuring that the difference between the two measured values ​​can accurately reflect the actual distance between the front and rear end faces of the coil skeleton phenolic component at the position for winding the coil. The third detection unit 4 also includes a second infrared ranging sensor 409. The second infrared ranging sensor 409 is fixedly connected to the second detection unit 3. The detection end of the second infrared ranging sensor 409 points to the support frame 5. The second infrared ranging sensor 409 is fixedly installed on the connecting frame 303. Its detection end, the lower end face of the abutment plate 308 and the upper end face of the coil skeleton phenolic component are all located in the same plane. It is used to detect the distance from it to the upper end face of the positioning plate 53. This distance is the distance between the upper and lower ends of the coil skeleton phenolic component at the position where the coil is wound.

[0024] Example 3:

[0025] This invention provides a technical solution: a method for quality inspection of phenolic coil bobbins, comprising the following steps: S1. Place the phenolic coil bobbin on the support frame 5, so that its pins pass through the position hole 52, touch the contact switch 309 to start the cylinder 302, drive the connecting frame 303 and the abutment plate 308 to move down, the abutment plate 308 presses the phenolic coil bobbin, and at the same time the third spring 306 is stretched to achieve pre-pressing positioning. S2. The electric push rod 2201 pushes the moving plate 2202 upward, placing the two clamping rods 2901 on both sides of the pin. The motor 27 drives the driving gear 28 to drive the driven gear 26 and the lead screw 25 to rotate, so that the two moving rods 24 move closer to each other, causing the clamping blocks 2904 on the two clamping rods 2901 to clamp the pin. Then the electric push rod 2201 moves in the opposite direction, causing the clamping mechanism 29 to move downward to apply a downward pulling force to the pin to verify the connection firmness of the pin. S3. The two first infrared ranging sensors 403 measure the distance from their detection ends to the contact plate 407 and the position plate 408, respectively. The difference between the two distances is the size of the front and rear end faces of the coil skeleton phenolic component at the position where the coil is wound. The second infrared ranging sensor 409 measures the distance from its detection end to the upper end face of the positioning plate 53, which is the size of the upper and lower end faces at the position where the coil is wound. The measured size is compared with the preset standard value to determine whether the size is qualified. S4. The cylinder 302 drives the abutment plate 308 to continue to descend. After the upper end of the top plate 304 contacts the upper side wall of the connecting frame 303, the cylinder 302 continues to apply pressure. The second pressure detection sensor 307 records the pressure value in real time. If the maximum pressure value reaches the preset threshold and the workpiece is not broken or obviously deformed, the compressive strength is deemed to be qualified. S5, the operation screen 102 summarizes the detection data of the first detection unit 2, the second detection unit 3 and the third detection unit 4, comprehensively determines whether the workpiece is qualified or not, and outputs the detection results.

[0026] Working principle: During use, the parameters of each pressure detection sensor are set through the operation screen 102. The operator moves the moving frame 404 to the rear with one hand, moving the contact plate 407 to the rear of the support frame 5. With the other hand, the operator places the coil skeleton phenolic component to be tested into the position slot 51, with the lower end of the pin passing down through the position hole 52. The lower end face of the coil skeleton phenolic component body used for winding the coil contacts the upper end face of the positioning plate 53. During the downward pushing of the coil skeleton phenolic component, the third sliding rod 54 moves downward and stretches the fifth spring 56. The operation stops when the coil skeleton phenolic component reaches the lowest position. After the phenolic resin coil frame is placed, the cylinder 302 in the second detection unit 3 pushes the connecting frame 303 downward. After the lower end face of the contact plate 308 contacts the upper end face of the phenolic resin coil frame, the cylinder 302 continues to move downward. When the second pressure detection sensor 307 detects that the pre-fixing force has been reached, the hand in contact with the phenolic resin coil frame is removed, the moving frame 404 is released, and the front end face of the contact plate 407 abuts against the side wall of the phenolic resin coil frame where the coil is wound. At this time, one of the first infrared ranging sensors 403 detects its distance to the phenolic resin coil frame, and the other first infrared ranging sensor 403 detects its distance to the position plate 408. The difference between the two measurements is the distance between the front and rear ends of the phenolic resin coil frame where the coil is wound. The distance between the two end faces; the detection end of the second infrared ranging sensor 409, the lower end face of the abutment plate 308, and the upper end face of the coil skeleton phenolic component are all located in the same plane. The distance from the second infrared ranging sensor 409 to the upper end face of the positioning plate 53 is the distance between the upper and lower ends of the coil skeleton phenolic component where the coil is wound. After the external dimensions are measured, the cylinder 302 pushes the connecting frame 303 to continue moving downward. When the top plate 304 contacts the upper side wall of the connecting frame 303, it continues to apply pressure. When the second pressure detection sensor 307 reaches the preset detection pressure, it stops and observes whether the product is damaged. At the same time, the pressure value detected by the second pressure detection sensor 307 is used to judge. When the pressure value drops suddenly, it is determined that the product is damaged.

[0027] Next, the motor 27 drives the drive gear 28 to rotate, and the drive gear 28 and the driven gear 26 work together to drive the lead screw 25 to rotate, which in turn drives the two moving rods 24 to move closer to each other. The connecting mechanism 23 and the limiting slider 2204 move laterally, and the clamping blocks 2904 on the two clamping rods 2901 clamp the pin. During the clamping process, the pin is located between the clamping grooves 2909 on the two clamping blocks 2904. The clamping blocks 2904 compress the second spring 2906 and contact the first pressure detection sensor 2905. The clamping force is detected by the first pressure detection sensor 2905. When the clamping force reaches the preset value, the motor 27 stops. Then, the electric push rod 2201 drives the moving plate 2202 to move downward. Through the action of the limiting slide 2203 and the limiting slider 2204, the tension detection sensor 2301 and the pull rod 2302 are pulled downward. When the lower end face of the sliding plate 2304 contacts the upper end face of the limiting tube 2306, the electric push rod 2201 continues to apply a downward pulling force to the moving plate 2202. The tension detection sensor 2301 detects the tension value in real time and stops when the tension value reaches the predetermined value. During the traction process, if the contact sensor 2303 detects contact with the upper end face of the sliding plate 2304 or the tension value detected by the tension detection sensor 2301 changes abnormally, it indicates that an abnormal separation has occurred between the pin and the phenolic component of the coil frame.

[0028] After the test is completed, the electric push rod 2201 pushes the moving plate 2202 upward in the opposite direction. When all the contact sensors 2303 detect contact with the sliding plate 2304, they stop. The motor 27 drives the drive gear 28 to rotate in the opposite direction. While the moving rod 24 moves, the two clamping rods 2901 in the clamping mechanism 29 separate from each other. When the first pressure detection sensor 2905 shows zero, the motor 27 stops. The operator holds the coil skeleton phenolic component with one hand and pushes the moving frame 404 backward with the other hand. The cylinder 302 drives the connecting frame 303 to move upward to reset, so the coil skeleton phenolic component can be pulled out upward. For the pins that have fallen off the coil skeleton phenolic component, the two clamping blocks 2904 clamp them under the action of the second spring 2906 to prevent them from falling into the outer frame 21. The electric push rod 2201 pushes the clamping mechanism 29 upward. After the fallen pins pass through the position hole 52 and are exposed above the support frame 5, they can be pulled out upward for subsequent product testing.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quality inspection device for phenolic coil bobbin components, characterized in that, include, The main body of the frame (1) includes a support base (101), a support leg (103) fixed to the bottom of the support base (101), an operation screen (102) mounted on the support base (101), and a through hole (104) opened on the upper side wall of the support base (101). The operation screen (102) is used to display detection data and input control commands. A support frame (5) is fixedly connected to the top of the support base (101). The support frame (5) is located above the through hole (104) and is used to position and place the phenolic coil skeleton to be tested. The first detection unit (2) is located inside the support base (101) and is used to apply traction force to the pins on the coil skeleton phenolic component to detect the connection firmness of the pins; The second detection unit (3) is located upstream of the support base (101) and is used to test the compressive strength of the coil skeleton phenolic component. The third detection unit (4) is located between the support base (101) and the second detection unit (3) and is used to detect the dimensional parameters of the coil skeleton phenolic component.

2. The quality inspection device for phenolic coil bobbin components according to claim 1, characterized in that: The first detection unit (2) includes an outer frame (21) fixed to the inner wall of the support base (101), a traction mechanism (22) disposed on the outer frame (21), a connecting mechanism (23) disposed above the traction mechanism (22), and a clamping mechanism (29) disposed on the connecting mechanism (23). The clamping mechanism (29) includes two clamping rods (2901). A movable cavity (2902) is provided inside each clamping rod (2901). Adjacent sidewalls of the two clamping rods (2901) are provided with mating grooves (2903). A first pressure sensor (2905) is provided at the bottom of each mating groove (2903). A clamping block (2904) is provided inside each mating groove (2903). A second spring (2906) is provided inside each mating groove (2903). The two ends of the second spring (2906) are respectively... The bottom of the mating groove (2903) and the side wall of the clamping block (2904) are connected. Each of the two clamping blocks (2904) has a clamping groove (2909) at one of its adjacent ends. The inner wall of the clamping groove (2909) has a transversely arranged anti-slip tooth groove (2910). The clamping block (2904) has a movable hole (2907). The inner side of the movable hole (2907) is provided with a limit rod (2908). The upper and lower ends of the limit rod (2908) are fixedly connected to the upper and lower inner walls of the mating groove (2903) respectively.

3. The quality inspection device for phenolic coil bobbin components according to claim 2, characterized in that: The traction mechanism (22) includes a movable plate (2202), on which a transverse limiting slide (2203) is provided, and a limiting slider (2204) is slidably connected in the limiting slide (2203). The connecting mechanism (23) includes a tension detection sensor (2301) fixed to the upper end of the limiting slider (2204) and a pull rod (2302) fixed to the upper end of the tension detection sensor (2301). The upper end of the pull rod (2302) passes through the movable cavity (2902) and is connected to a sliding plate (2304). The sliding plate (2304) is slidably connected to the inner wall of the movable cavity (2902). A contact sensor (2303) is provided at the top of the inner wall of the movable cavity (2902). A first spring (2305) is fixedly connected to the bottom of the inner wall of the movable cavity (2902). The upper end of the first spring (2305) is fixedly connected to the bottom of the sliding plate (2304). The first spring (2305) is located outside the pull rod (2302). A limiting tube (2306) is sleeved on the pull rod (2302), and the lower end of the limiting tube (2306) is fixedly connected to the bottom of the inner wall of the movable cavity (2902).

4. The quality inspection device for phenolic coil bobbin components according to claim 2, characterized in that: The traction mechanism (22) also includes an electric push rod (2201) fixed on the outer frame (21), the output end of which passes through the outer frame (21) and is connected to the lower end of the moving plate (2202); A motor (27) is fixedly connected to the outer wall of the outer frame (21). A drive gear (28) is fixedly connected to the output end of the motor (27). A moving rod (24) and a lead screw (25) are provided on the inner side of the outer frame (21). One end of the lead screw (25) is rotatably connected to the inner side wall of the outer frame (21). The other end of the lead screw (25) passes through the moving rod (24) and the side wall of the outer frame (21) in sequence and is fixedly connected to a driven gear (26). The drive gear (28) meshes with the driven gear (26). A limit hole (2401) is opened on the moving rod (24). The clamping rod (2901) is located inside the limit hole (2401). The clamping rod (2901) is slidably connected to the limit hole (2401).

5. The quality inspection device for phenolic coil bobbin components according to claim 1, characterized in that: The second detection unit (3) includes a fixed frame (301) fixed on the support base (101) and a cylinder (302) fixed on the upper end of the support frame (5). The output end of the cylinder (302) points to the support frame (5) and is connected to a connecting frame (303). A top plate (304) is provided on the inner side of the connecting frame (303). A first sliding rod (305) is connected to the lower end of the top plate (304). The lower end of the first sliding rod (305) passes through the bottom of the connecting frame (303) and is connected to a second pressure detection sensor (307). The lower end of the second pressure detection sensor (307) is connected to an abutment plate (308). A third spring (306) is fixedly connected to the bottom of the inner wall of the connecting frame (303). The upper end of the third spring (306) is connected to the bottom surface of the top plate (304). The third spring (306) is located outside the first sliding rod (305). A contact switch (309) is provided on the fixing frame (301).

6. The quality inspection device for phenolic coil bobbin components according to claim 5, characterized in that: The upper end of the support frame (5) is provided with a position groove (51) for placing the phenolic coil bobbin part, and the bottom of the position groove (51) is provided with a position hole (52) for placing the pin of the phenolic coil bobbin part. The position hole (52) is located between two clamping rods (2901). A positioning plate (53) is provided above the position groove (51). A third sliding rod (54) is fixedly connected to the lower end of the positioning plate (53). The lower end of the third sliding rod (54) passes through the lower side wall of the position groove (51) and is connected to a baffle (55). A fifth spring (56) is sleeved on the third sliding rod (54). The upper and lower ends of the fifth spring (56) are respectively connected to the adjacent side walls of the support frame (5) and the baffle (55).

7. The quality inspection device for phenolic coil bobbin components according to claim 1, characterized in that: The third detection unit (4) includes a limiting frame (401) fixed on the support base (101) and a side plate (402). A movable frame (404) is slidably connected to the inner side of the limiting frame (401). The support frame (5) is located between the limiting frame (401) and the side plate (402). Two first infrared ranging sensors (403) are provided on the side plate (402). A contact plate (407) and a position plate (408) are provided on the movable frame (404). The inner wall of the limiting frame (401) is provided with a second sliding rod (405). One end of the second sliding rod (405) is connected to the inner wall of the limiting frame (401), and the other end of the second sliding rod (405) passes through the movable frame (404) and is connected to the inner wall of the other side of the limiting frame (401). A fourth spring (406) is sleeved on the second sliding rod (405). The two ends of the fourth spring (406) are respectively connected to the side wall of the movable frame (404) and the limiting frame (401).

8. The quality inspection device for phenolic coil bobbin components according to claim 7, characterized in that: The contact plate (407) and the position plate (408) are respectively disposed behind the two first infrared ranging sensors (403). The contact plate (407) is located on the side of the support frame (5) away from the side plate (402). The contact plate (407) and the position plate (408) are located in the same plane near the side wall of the side plate (402).

9. The quality inspection device for phenolic coil bobbin components according to claim 7, characterized in that: The third detection unit (4) further includes a second infrared ranging sensor (409), which is fixedly connected to the second detection unit (3), and the detection end of the second infrared ranging sensor (409) points to the support frame (5).

10. A method for quality inspection of phenolic coil bobbin components, characterized in that, The coil bobbin phenolic component quality inspection device according to any one of claims 1 to 9 includes the following steps: S1. Place the phenolic coil bobbin on the support frame (5) so that its pins pass through the position hole (52). Touch the contact switch (309) to start the cylinder (302), drive the connecting frame (303) and the abutment plate (308) to move downward. The abutment plate (308) presses the phenolic coil bobbin tightly, and at the same time the third spring (306) is stretched to achieve pre-pressing positioning. S2. The electric push rod (2201) pushes the moving plate (2202) upward, placing the two clamping rods (2901) on both sides of the pin. The motor (27) drives the driving gear (28) to drive the driven gear (26) and the lead screw (25) to rotate, so that the two moving rods (24) move closer to each other, causing the clamping blocks (2904) on the two clamping rods (2901) to clamp the pin. Then the electric push rod (2201) moves in the opposite direction, causing the clamping mechanism (29) to move downward to apply a downward pulling force to the pin, in order to verify the connection firmness of the pin. S3. Two first infrared ranging sensors (403) measure the distance from their detection ends to the contact plate (407) and the position plate (408) respectively. The difference between the two is the size of the front and rear end faces of the coil skeleton phenolic component at the position where the coil is wound. The second infrared ranging sensor (409) measures the distance from its detection end to the upper end face of the positioning plate (53), which is the size of the upper and lower end faces at the position where the coil is wound. The measured size is compared with the preset standard value to determine whether the size is qualified. S4. The cylinder (302) drives the abutment plate (308) to continue to descend. After the upper end of the top plate (304) contacts the upper side wall of the connecting frame (303), the cylinder (302) continues to apply pressure. The second pressure detection sensor (307) records the pressure value in real time. If the maximum pressure value reaches the preset threshold and the workpiece is not broken or obviously deformed, the compressive strength is deemed to be qualified. S5. The operation screen (102) summarizes the detection data of the first detection unit (2), the second detection unit (3) and the third detection unit (4), comprehensively judges whether the workpiece is qualified or not, and outputs the detection results.

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