Nut neglected loading detection equipment based on automobile film capacitor shell assembly and detection method thereof

Abstract

The invention discloses a nut neglected loading detection device based on automobile thin film capacitor shell assembly and a detection method thereof, and relates to the technical field of automobile part manufacturing, the nut neglected loading detection device based on automobile thin film capacitor shell assembly comprises a detection frame, a mounting plate is fixedly mounted in the detection frame, and the mounting plate is fixedly connected with the detection frame. A mechanical arm is fixedly mounted above the mounting plate, a servo motor is fixedly mounted below the mounting plate, the detection device comprises a bearing plate, a detection rod, a proximity switch, a supporting block, a probe rod, a connecting seat and a connecting rod, the bearing plate is fixedly mounted at the output end of the mechanical arm, and the detection rod is fixedly mounted at the output end of the mechanical arm. According to the detection equipment, whether the nut is neglected to be installed or installed in place is judged according to whether the proximity switch sends a signal or not and the time difference between the sent signals, the detection precision of the nut is further improved, the situation that the nut is not installed in place and consequently the quality of a final product is affected is avoided, and the subsequent processing cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts manufacturing, and specifically to a nut missing detection device and its detection method based on the assembly of automotive thin film capacitor housings. Background Art

[0002] The automotive thin film capacitor housing is an external structural part used to encapsulate and protect automotive thin film capacitors. Thin film capacitors are widely used in automotive electronic systems, mainly for functions such as filtering, voltage regulation, noise reduction, and energy storage. During the production process, it is necessary to ensure the assembly quality of each product in the production process to avoid capacitor performance problems or safety hazards caused by missing nuts. The core purpose of this detection device is to ensure the assembly quality of each product in the production process and avoid capacitor performance problems or safety hazards caused by missing nuts.

[0003] The patent with the patent announcement number CN109596337B relates to a device for detecting the misassembly and missing of nuts on a winding wheel seat, including a workbench, a program control unit, and a reminder unit; there is an inspection seat on the workbench, an inspection hole Ⅰ is provided on the inspection seat, and a proximity switch Ⅰ is correspondingly provided in the inspection hole Ⅰ. An inspection frame is provided above the inspection seat, and the inspection frame includes an upper fixing plate, a lower movable plate, and a side frame; a first cylinder is fixed at the top of the upper fixing plate, a proximity switch Ⅱ is fixed at the bottom, and the telescopic rod of the first cylinder is connected to the lower movable plate; an insertion pin assembly corresponding to the proximity switch Ⅱ is fixed on the lower movable plate; a proximity switch Ⅲ is fixed in the inspection hole Ⅱ of the lower movable plate; it also includes the use method of this device for detecting the misassembly and missing of nuts on the winding wheel seat; the beneficial technical effects of this patent are: detecting whether the nuts are missing or misassembled through the induction principle of the proximity switch, reducing the working labor intensity; the detection result has high accuracy, avoiding human errors; with a counting device, improving the working efficiency.

[0004] In the above patent, detecting whether the nuts are missing or misassembled through the induction principle of the proximity switch reduces the working labor intensity; the detection result has high accuracy, avoiding human errors; with a counting device, improving the working efficiency. However, during the installation process of the nuts, they may not be installed in place, resulting in looseness, and it is difficult for the detection switch to detect whether the nuts are installed in place. Therefore, a nut missing detection device based on the assembly of automotive thin film capacitor housings with a better detection device is designed. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a nut missing detection device and its detection method based on the assembly of automotive thin film capacitor housings, solving the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A nut missing detection device based on the assembly of an automotive thin-film capacitor housing, including a detection frame, an installation plate is fixedly installed inside the detection frame, a robotic arm is fixedly installed above the installation plate, a servo motor is fixedly installed below the installation plate, and further includes: a detection device, the detection device includes a receiving plate, a detection rod, a proximity switch, a support block, a probe rod, a connecting seat, and a connecting rod. The movement of the receiving plate drives the movement of the detection rod. When the detection rod moves and contacts the nut, it will move upward under the action of the nut. The receiving plate is fixedly installed at the output end of the robotic arm. The detection rod slidably penetrates the upper and lower walls of the receiving plate. The proximity switch is fixedly installed below the receiving plate. The support block is fixedly installed below the receiving plate. The probe rod slidably penetrates the left and right walls of the support block. The connecting seat is fixedly installed on the surface of the detection rod. The connecting rod is rotatably installed at one end of the probe rod away from the proximity switch. The end of the connecting rod away from the probe rod is rotatably connected to the connecting seat. When a nut is missing, the probe rod will not move below the proximity switch, so the missing nut is determined by the lack of signal.

[0007] According to the above technical solution, a fixing plate is fixedly installed on the circumferential surface of the detection rod. A first spring is provided between the fixing plate and the receiving plate. When the detection rod moves upward, it will drive the fixing plate to move upward. The upward movement of the fixing plate stretches the first spring, and under the action of the first spring, the reset of the detection rod is realized, reducing the subsequent maintenance cost.

[0008] According to the above technical solution, a positioning device for improving the detection accuracy is provided on the surface of the installation plate. The positioning device includes a transmission shaft and a support plate. The transmission shaft is fixedly installed at the output end of the servo motor. The support plate is fixedly installed below the installation plate. The positioning device further includes a sliding rod, a longitudinal clamping block, a lifting plate, a transverse clamping block, a connecting plate, a receiving rod, a guiding plate, a connecting rod, an L-shaped plate, and a pushing plate. The rotation of the transmission shaft drives the relative movement of the two sliding rods. The relative movement of the sliding rods drives the relative movement of the longitudinal clamping blocks. A longitudinal groove is opened on the surface of the installation plate. The sliding rod is slidably installed inside the longitudinal groove. The longitudinal clamping block is fixedly installed above the sliding rod. A transverse groove is opened on the surface of the installation plate. The lifting plate is slidably installed inside the transverse groove. The transverse clamping block is slidably installed above the lifting plate. The connecting plate is fixedly installed below the transverse clamping block. The receiving rod fixedly penetrates the left and right walls of the connecting plate. The guiding plate is fixedly installed below the installation plate. The connecting rod is rotatably installed inside the lifting plate. The L-shaped plate is slidably installed inside the transverse groove. The pushing plate is fixedly installed on the surface of the sliding rod. The end of the connecting rod away from the lifting plate is rotatably connected to the L-shaped plate. The relative movement of the longitudinal clamping blocks contacts and clamps the capacitor housing for positioning. The movement of the connecting plate drives the movement of the transverse clamping block. The movement of the transverse clamping block contacts and clamps the transverse direction of the capacitor housing for positioning.

[0009] According to the above technical solution, two spiral grooves are formed on the surface of the transmission shaft, and the two spiral grooves are symmetrically distributed with the transmission shaft as the center. Two sliding rods are provided, and the two sliding rods are threadedly connected to the transmission shaft. The two sliding rods are symmetrically distributed with the center of the longitudinal groove as the center. Longitudinal clamping blocks are fixedly installed above the two sliding rods. When the transmission shaft rotates, the two sliding rods are driven to move relatively through the spiral grooves. The relative movement of the sliding rods drives the longitudinal clamping blocks to move relatively. The relative movement of the longitudinal clamping blocks contacts the capacitor housing and clamps and positions it.

[0010] According to the above technical solution, a guiding groove is formed on the surface of the guiding plate, the receiving rod contacts the inner wall of the guiding groove, the transmission shaft is rotatably connected to the supporting plate, and when the receiving rod moves upward, it moves in the direction close to the longitudinal groove under the action of the guiding groove.

[0011] According to the above technical solution, one end of the L-shaped plate away from the lifting plate is set as a first arc surface, and one side of the pushing plate close to the L-shaped plate is set as a second arc surface. When the pushing plate moves, the L-shaped plate is driven to move away from the longitudinal groove through the second arc surface and the first arc surface. A second spring is arranged between the L-shaped plate and the inner wall of the transverse groove, and the second spring can drive the L-shaped plate to reset.

[0012] According to the above technical solution, two transverse grooves are provided, and the two transverse grooves are symmetrically distributed with the longitudinal groove as the center. Lifting plates are slidably installed inside the two transverse grooves.

[0013] According to the above technical solution, a stabilizing device is further included. The stabilizing device includes a storage box, a fixed frame, a sliding frame, a fixed block and a spray pipe. When the sliding rods move away from each other, they contact and squeeze the sliding frame to move it in the direction close to the storage box. The movement of the sliding frame drives the connection hole to move. The storage box is fixedly installed below the mounting plate, the fixed frame is fixedly installed inside the storage box, the sliding frame is slidably installed on the inner wall of the fixed frame, the fixed block is fixedly installed below the mounting plate, the spray pipe fixedly penetrates the inner and outer walls of the sliding frame, a pressure valve is arranged inside the spray pipe, and when the sliding frame continues to move, the lubricating oil inside the sliding frame will be discharged through the spray pipe.

[0014] According to the above technical solution, the sliding frame slidably penetrates the inner and outer walls of the storage box. A third spring is arranged between the sliding frame and the inner wall of the fixed frame. An oil inlet is formed on the surface of the fixed frame, a connection hole is formed on the surface of the sliding frame, and a communication hole is formed on the surface of the sliding rod. The movement of the sliding frame drives the connection hole to move.

[0015] A detection method for a nut missing detection device based on the assembly of an automotive thin-film capacitor housing includes the following steps:

[0016] Step 1: Transport the capacitor housing to the position to be detected by a transport mechanism. Then, start the robotic arm. The robotic arm moves to drive the receiving plate closer to the capacitor housing and detect the nut detection position on its surface.

[0017] Step 2: The movement of the receiving plate drives the movement of the detection rod. When the detection rod moves and contacts the nut, it will move upward under the action of the nut. The upward movement of the detection rod drives the upward movement of the connecting seat.

[0018] Step 3: The upward movement of the connecting seat drives the upward movement of one end of the connecting rod. The upward movement of one end of the connecting rod drives the probe rod to move in the direction close to the proximity switch through the other end.

[0019] Step 4: When the probe rod moves below the proximity switch, the proximity switch will receive the signal and send the signal to the terminal. The detection of missing nuts and improper installation is achieved by whether the signal is sent and the time difference between signal transmissions.

[0020] The present invention provides a nut missing detection device based on the assembly of an automotive thin-film capacitor housing. It has the following beneficial effects:

[0021] (1) For this nut missing detection device for capacitor housing assembly, through the cooperation among the receiving plate, detection rod, proximity switch, support block, probe rod, connecting seat and connecting rod, the probe rod approaches the proximity switch, and it is determined whether a nut is missing or properly installed by whether the proximity switch sends a signal and the time difference between signal transmissions, further improving the detection accuracy of the nut, avoiding the improper installation of the nut from affecting the quality of the final product, reducing the subsequent processing cost. At the same time, when the detection rod moves upward, it drives the fixed plate to move upward. The upward movement of the fixed plate stretches the first spring, and the detection rod is reset under the action of the first spring, reducing the subsequent maintenance cost.

[0022] (2) For this nut missing detection device for capacitor housing assembly, through the coordinated operation among the transmission shaft, support plate, sliding rod, longitudinal clamping block, lifting plate, transverse clamping block, connecting plate, receiving rod, guiding plate, connecting rod, L-shaped plate, pushing plate and guiding groove, when the longitudinal clamping block positions and clamps the capacitor housing, the transverse clamping block further positions the capacitor housing, further avoiding the deviation of the capacitor housing during detection, which may lead to inaccurate detection results, improving the accuracy of the detection results. At the same time, during the lifting process of the lifting plate, it avoids affecting the subsequent transportation of the capacitor housing, improving the automation degree of the detection process and reducing the subsequent maintenance cost.

[0023] (3) The nut missing detection device for the capacitor housing assembly, through the coordinated operation among the storage box, fixed frame, sliding frame, fixed block, spray pipe, third spring, oil inlet, connection hole and communication hole, enables the lubricating oil inside the sliding frame to be discharged through the spray pipe. The sprayed lubricating oil drops on the surface of the transmission shaft and lubricates the spiral groove, reducing the wear of the device and effectively avoiding jamming and jerks of the sliding rod during the clamping process of the capacitor housing, improving the stability of the positioning device. At the same time, under the action of the fixed frame and the sliding frame, quantitative discharge of the lubricating oil can be achieved, extending the service life of the device and reducing subsequent maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the position structure of the longitudinal groove and the transverse groove of the present invention;

[0026] Figure 3 is a schematic diagram of the position structure of the detection rod and the probe rod of the present invention;

[0027] Figure 4 is a schematic diagram of the position structure of the lifting plate and the guiding plate of the present invention;

[0028] Figure 5 is a schematic diagram of the position structure of the L-shaped plate and the transverse clamping block of the present invention;

[0029] Figure 6 is a schematic diagram of the position structure of the sliding rod and the sliding frame of the present invention;

[0030] Figure 7 is the structure of the present invention Figure 6 magnified schematic diagram of part A in the figure.

[0031] In the figure: 1, detection frame; 2, mounting plate, 21, longitudinal groove; 22, transverse groove; 3, robotic arm; 4, servo motor; 5, receiving plate; 6, detection rod; 7, proximity switch; 8, support block; 9, probe rod; 10, connecting seat; 11, connecting rod; 12, fixing plate; 13, first spring; 141, transmission shaft; 142, support plate; 143, sliding rod; 144, longitudinal clamping block; 145, lifting plate; 146, transverse clamping block; 147, connecting plate; 148, receiving rod; 149, guiding plate; 1410, connecting rod; 1411, L-shaped plate; 1412, pushing plate; 1413, guiding groove; 1414, second spring; 151, storage box; 152, fixed frame; 153, sliding frame; 154, fixed block; 155, spray pipe; 156, third spring; 157, oil inlet; 158, connection hole; 159, communication hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-7 , an embodiment of the present invention is: a nut missing detection device based on the assembly of an automotive film capacitor housing, including a detection frame 1, an installation plate 2 is fixedly installed inside the detection frame 1, a robotic arm 3 is fixedly installed above the installation plate 2, a servo motor 4 is fixedly installed below the installation plate 2, and further includes: a detection device, the detection device includes a receiving plate 5, a detection rod 6, a proximity switch 7, a support block 8, a probe rod 9, a connecting seat 10 and a connecting rod 11. The movement of the receiving plate 5 drives the movement of the detection rod 6. When the detection rod 6 moves and contacts the nut, it will move upward under the action of the nut. The receiving plate 5 is fixedly installed at the output end of the robotic arm 3. The detection rod 6 slides through the upper and lower walls of the receiving plate 5. The proximity switch 7 is fixedly installed below the receiving plate 5. The support block 8 is fixedly installed below the receiving plate 5. The probe rod 9 slides through the left and right walls of the support block 8. The connecting seat 10 is fixedly installed on the surface of the detection rod 6. The connecting rod 11 is rotatably installed at one end of the probe rod 9 away from the proximity switch 7. One end of the connecting rod 11 away from the probe rod 9 is rotatably connected to the connecting seat 10. When the nut is missing, the probe rod 9 will not move below the proximity switch 7, so the missing of the nut is determined by the missing signal. When the time difference of the signals received between the proximity switches 7 exceeds the preset value, it is determined that the nut is not installed in place, further improving the detection accuracy of the nut.

[0034] A fixing plate 12 is fixedly installed on the circumferential surface of the detection rod 6. A first spring 13 is arranged between the fixing plate 12 and the receiving plate 5. When the detection rod 6 moves upward, it will drive the fixing plate 12 to move upward. The upward movement of the fixing plate 12 stretches the first spring 13, and the detection rod 6 is reset under the action of the first spring 13, reducing the subsequent maintenance cost.

[0035] A detection method for a nut missing detection device based on the assembly of an automotive film capacitor housing includes the following steps:

[0036] Step 1: Transport the capacitor housing to the position to be detected through the transport mechanism, and then start the robotic arm 3. The movement of the robotic arm 3 drives the receiving plate 5 to approach the capacitor housing and detect the nut detection position on its surface;

[0037] Step 2: The movement of the receiving plate 5 drives the movement of the detection rod 6. When the detection rod 6 moves and contacts the nut, it will move upward under the action of the nut. The upward movement of the detection rod 6 drives the connecting seat 10 to move upward;

[0038] Step 3: The upward movement of the connecting seat 10 drives one end of the connecting rod 11 to move upward. The upward movement of one end of the connecting rod 11 drives the detecting rod 9 to move towards the proximity switch 7 through the other end.

[0039] Step 4: When the detecting rod 9 moves below the proximity switch 7, the proximity switch 7 will receive the signal and send the signal to the terminal. The detection of missing nuts and improper installation is achieved by the presence or absence of the signal and the time difference of signal transmission.

[0040] During the operation of this embodiment: The capacitor housing is transported to the position to be detected by the transportation mechanism. Subsequently, the robotic arm 3 is activated. The movement of the robotic arm 3 drives the receiving plate 5 to approach the capacitor housing and detect the nut detection position on its surface. During this process, the movement of the receiving plate 5 drives the detection rod 6 to move. When the detection rod 6 moves and contacts the nut, it will move upward under the action of the nut. The upward movement of the detection rod 6 drives the connecting seat 10 to move upward. The upward movement of the connecting seat 10 drives one end of the connecting rod 11 to move upward. The upward movement of one end of the connecting rod 11 drives the detecting rod 9 to move towards the proximity switch 7 through the other end. When the detecting rod 9 moves below the proximity switch 7, the proximity switch 7 will receive the signal and send the signal to the terminal. When a nut is missing, the detecting rod 9 will not move below the proximity switch 7, so the missing nut is determined by the absence of the signal. At the same time, when the nut is improperly installed, the detecting rod 9 will move below the proximity switch 7 in advance under the action of the improperly installed nut, which will increase the time difference of the signals received by the proximity switch 7. When the signal time difference value exceeds the preset value, it is determined that the nut is improperly installed, further improving the detection accuracy of the nut, avoiding the improper installation of the nut from affecting the quality of the final product, reducing the subsequent processing cost. At the same time, when the detection rod 6 moves upward, it will drive the fixing plate 12 to move upward. The upward movement of the fixing plate 12 stretches the first spring 13, and the detection rod 6 is reset under the action of the first spring 13, reducing the subsequent maintenance cost.

[0041] Please refer to Figures 1-7, on the basis of the above embodiments, in another embodiment of the present invention, a positioning device for improving the detection accuracy is provided on the surface of the mounting plate 2. The positioning device includes a transmission shaft 141 and a support plate 142. The transmission shaft 141 is fixedly installed at the output end of the servo motor 4, and the support plate 142 is fixedly installed below the mounting plate 2. The positioning device further includes a sliding rod 143, a longitudinal clamp 144, a lifting plate 145, a transverse clamp 146, a connecting plate 147, a receiving rod 148, a guide plate 149, a connecting rod 1410, an L-shaped plate 1411 and a pushing plate 1412. The rotation of the transmission shaft 141 drives the relative movement of the two sliding rods 143. The relative movement of the sliding rods 143 drives the relative movement of the longitudinal clamps 144. A longitudinal groove 21 is formed on the surface of the mounting plate 2, and the sliding rod 143 is slidably installed inside the longitudinal groove 21. The longitudinal clamp 144 is fixedly installed above the sliding rod 143. A transverse groove 22 is formed on the surface of the mounting plate 2, and the lifting plate 145 is slidably installed inside the transverse groove 22. The transverse clamp 146 is slidably installed above the lifting plate 145. The connecting plate 147 is fixedly installed below the transverse clamp 146. The receiving rod 148 fixedly penetrates the left and right walls of the connecting plate 147. The guide plate 149 is fixedly installed below the mounting plate 2. The connecting rod 1410 is rotatably installed inside the lifting plate 145. The L-shaped plate 1411 is slidably installed inside the transverse groove 22. The pushing plate 1412 is fixedly installed on the surface of the sliding rod 143. One end of the connecting rod 1410 away from the lifting plate 145 is rotatably connected to the L-shaped plate 1411. The relative movement of the longitudinal clamps 144 contacts the capacitor housing and clamps and positions it. The movement of the connecting plate 147 drives the movement of the transverse clamp 146. The movement of the transverse clamp 146 contacts and clamps and positions the transverse direction of the capacitor housing, further avoiding the deviation of the capacitor housing during the detection process, resulting in inaccurate detection results, and improving the accuracy of the detection results.

[0042] Two spiral grooves are formed on the surface of the transmission shaft 141. The two spiral grooves are symmetrically distributed with the transmission shaft 141 as the center. There are two sliding rods 143. The two sliding rods 143 are threadedly connected to the transmission shaft 141. The two sliding rods 143 are symmetrically distributed with the center of the longitudinal groove 21 as the center. Longitudinal clamps 144 are fixedly installed above both of the two sliding rods 143. The rotation of the transmission shaft 141 drives the relative movement of the two sliding rods 143 through the spiral grooves. The relative movement of the sliding rods 143 drives the relative movement of the longitudinal clamps 144. The relative movement of the longitudinal clamps 144 contacts the capacitor housing and clamps and positions it.

[0043] A guide groove 1413 is formed on the surface of the guide plate 149. The receiving rod 148 contacts the inner wall of the guide groove 1413. The transmission shaft 141 is rotatably connected to the support plate 142. When the receiving rod 148 moves upward, it moves in the direction close to the longitudinal groove 21 under the action of the guide groove 1413.

[0044] One end of the L-shaped plate 1411 away from the lifting plate 145 is set as the first arc surface, and one side of the pushing plate 1412 close to the L-shaped plate 1411 is set as the second arc surface. When the pushing plate 1412 moves, it drives the L-shaped plate 1411 to move away from the longitudinal groove 21 through the second arc surface and the first arc surface. A second spring 1414 is arranged between the L-shaped plate 1411 and the inner wall of the transverse groove 22, and the second spring 1414 can drive the L-shaped plate 1411 to reset.

[0045] There are two transverse grooves 22, and the two transverse grooves 22 are symmetrically distributed with the longitudinal groove 21 as the center. Lifting plates 145 are slidably installed inside the two transverse grooves 22.

[0046] It further includes a stabilizing device. The stabilizing device includes a storage box 151, a fixed frame 152, a sliding frame 153, a fixed block 154 and a spray pipe 155. When the sliding rod 143 moves backward, it contacts and presses the sliding frame 153 to move towards the storage box 151. The movement of the sliding frame 153 drives the connecting hole 158 to move. The storage box 151 is fixedly installed below the mounting plate 2. The fixed frame 152 is fixedly installed inside the storage box 151. The sliding frame 153 is slidably installed on the inner wall of the fixed frame 152. The fixed block 154 is fixedly installed below the mounting plate 2. The spray pipe 155 fixedly penetrates the inner and outer walls of the sliding frame 153. A pressure valve is arranged inside the spray pipe 155. When the sliding frame 153 continues to move, the lubricating oil inside the sliding frame 153 will be discharged through the spray pipe 155. The sprayed lubricating oil drops on the surface of the transmission shaft 141 and lubricates the spiral groove, reducing the wear of the equipment and effectively avoiding jamming and jerks of the sliding rod 143 during the clamping of the capacitor housing.

[0047] The sliding frame 153 slidably penetrates the inner and outer walls of the storage box 151. A third spring 156 is arranged between the sliding frame 153 and the inner wall of the fixed frame 152. An oil inlet 157 is opened on the surface of the fixed frame 152. A connecting hole 158 is opened on the surface of the sliding frame 153. A communication hole 159 is opened on the surface of the sliding rod 143. The movement of the sliding frame 153 drives the connecting hole 158 to move. When the connecting hole 158 moves and overlaps with the oil inlet 157, the lubricating oil on the inner wall of the storage box 151 enters the inside of the sliding frame 153, realizing the quantitative discharge of the lubricating oil, prolonging the service life of the equipment and reducing the subsequent maintenance cost.

[0048] During the operation of this embodiment: During the detection process, the servo motor 4 is started. The output end of the servo motor 4 rotates to drive the transmission shaft 141 to rotate. The rotation of the transmission shaft 141 drives the two sliding rods 143 to move relative to each other through the spiral groove. The relative movement of the sliding rods 143 drives the longitudinal clamping blocks 144 to move relative to each other. The relative movement of the longitudinal clamping blocks 144 contacts the capacitor housing and clamps and positions it. During this process, the movement of the sliding rod 143 drives the push plate 1412 to move. The movement of the push plate 1412 contacts and drives the L-shaped plate 1411 to move away from the longitudinal groove 21. The movement of the L-shaped plate 1411 drives one end of the connecting rod 1410 to move. One end of the connecting rod 1410 moves to drive the lifting plate 145 to move upward through the other end. The upward movement of the lifting plate 145 drives the connecting plate 147 to move upward. The upward movement of the connecting plate 147 drives the receiving rod 148 to move upward. The upward movement of the receiving rod 148 moves toward the longitudinal groove 21 under the action of the guiding groove 1413. The movement of the receiving rod 148 drives the connecting plate 147 to move. The movement of the connecting plate 147 drives the transverse clamping block 146 to move. The movement of the transverse clamping block 146 contacts and clamps and positions the transverse direction of the capacitor housing, further avoiding the deviation of the capacitor housing during the detection process, resulting in inaccurate detection results, improving the accuracy of the detection results. At the same time, during the lifting process of the lifting plate 145, it avoids affecting the subsequent transportation of the capacitor housing, improves the automation degree of the detection process, and reduces the subsequent maintenance cost.

[0049] When the sliding rod 143 moves backward, it contacts and squeezes the sliding frame 153 to move toward the storage box 151. The movement of the sliding frame 153 drives the connection hole 158 to move. The movement of the connection hole 158 overlaps with the oil inlet 157, so that the lubricating oil on the inner wall of the storage box 151 enters the inside of the sliding frame 153. Subsequently, when the sliding frame 153 continues to move, it will discharge the lubricating oil inside the sliding frame 153 through the spray pipe 155. The sprayed lubricating oil drops on the surface of the transmission shaft 141 and lubricates the spiral groove, reducing the wear of the equipment and effectively avoiding the jamming and jerks of the sliding rod 143 during the clamping of the capacitor housing, improving the stability of the positioning device. At the same time, under the action of the fixed frame 152 and the sliding frame 153, the quantitative discharge of the lubricating oil can be realized, extending the service life of the equipment and reducing the subsequent maintenance cost.

[0050] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and deformations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nut missing detection device based on automobile film capacitor housing assembly, comprising a detection frame (1), a mounting plate (2) is fixedly installed inside the detection frame (1), a mechanical arm (3) is fixedly installed above the mounting plate (2), and a servo motor (4) is fixedly installed below the mounting plate (2), characterized in that: Also includes: A detection device, the detection device comprising a receiving plate (5), a detection rod (6), a proximity switch (7), a support block (8), a probe rod (9), a connecting seat (10) and a connecting rod (11), the receiving plate (5) being fixedly mounted on the output end of the mechanical arm (3), the detection rod (6) slidingly passing through the upper and lower walls of the receiving plate (5), the proximity switch (7) being fixedly mounted below the receiving plate (5), the support block (8) being fixedly mounted below the receiving plate (5), the probe rod (9) slidingly passing through the left and right walls of the support block (8), the connecting seat (10) being fixedly mounted on the surface of the detection rod (6), the connecting rod (11) being rotatably mounted on one end of the probe rod (9) away from the proximity switch (7), and the end of the connecting rod (11) away from the probe rod (9) being rotatably connected to the connecting seat (10); A positioning device for improving detection accuracy is provided on the surface of the mounting plate (2), the positioning device comprising a transmission shaft (141) and a support plate (142), the transmission shaft (141) being fixedly mounted on the output end of the servo motor (4), and the support plate (142) being fixedly mounted below the mounting plate (2).

2. The nut missing detection device based on automobile film capacitor housing assembly according to claim 1 is characterized in that: A fixing plate (12) is fixedly mounted on the circumferential surface of the detection rod (6), and a No. 1 spring (13) is arranged between the fixing plate (12) and the receiving plate (5).

3. The nut missing detection device based on automobile film capacitor housing assembly according to claim 2 is characterized in that: The positioning device further comprises a sliding rod (143), a longitudinal clamping block (144), a lifting plate (145), a transverse clamping block (146), a connecting plate (147), a receiving rod (148), a guide plate (149), a connecting rod (1410), an L-shaped plate (1411) and a pushing plate (1412); a longitudinal groove (21) is provided on the surface of the mounting plate (2); the sliding rod (143) is slidably mounted inside the longitudinal groove (21); the longitudinal clamping block (144) is fixedly mounted above the sliding rod (143); a transverse groove (22) is provided on the surface of the mounting plate (2); the lifting plate (145) is slidably mounted inside the transverse groove (22); The transverse clamping block (146) is slidably mounted above the lifting plate (145), the connecting plate (147) is fixedly mounted below the transverse clamping block (146), the receiving rod (148) is fixedly penetrated through the left and right walls of the connecting plate (147), the guide plate (149) is fixedly mounted below the mounting plate (2), the connecting rod (1410) is rotatably mounted inside the lifting plate (145), the L-shaped plate (1411) is slidably mounted inside the transverse groove (22), the pushing plate (1412) is fixedly mounted on the surface of the sliding rod (143), and the end of the connecting rod (1410) away from the lifting plate (145) is rotatably connected to the L-shaped plate (1411).

4. The nut missing detection device based on automobile film capacitor housing assembly according to claim 3 is characterized in that: The surface of the transmission shaft (141) is provided with two spiral grooves, the two spiral grooves are symmetrically distributed with the transmission shaft (141) as the center, two sliding rods (143) are provided, the two sliding rods (143) are connected to the transmission shaft (141) by threads, the two sliding rods (143) are symmetrically distributed with the center of the longitudinal groove (21), and longitudinal clamping blocks (144) are fixedly installed above the two sliding rods (143).

5. The nut missing detection device based on automobile film capacitor housing assembly according to claim 4 is characterized in that: A guide groove (1413) is provided on the surface of the guide plate (149), the receiving rod (148) is in contact with the inner wall of the guide groove (1413), and the transmission shaft (141) is rotatably connected to the support plate (142).

6. The nut missing detection device based on automobile film capacitor housing assembly according to claim 5 is characterized in that: One end of the L-shaped plate (1411) away from the lifting plate (145) is configured as arc surface one, and one side of the pushing plate (1412) close to the L-shaped plate (1411) is configured as arc surface two, and a second spring (1414) is provided between the L-shaped plate (1411) and the inner wall of the transverse groove (22).

7. The nut missing detection device based on automobile film capacitor housing assembly according to claim 6 is characterized in that: Two transverse grooves (22) are provided, and the two transverse grooves (22) are symmetrically distributed with the longitudinal groove (21) as the center, and lifting plates (145) are slidably installed inside the two transverse grooves (22).

8. The nut missing detection device based on automobile film capacitor housing assembly according to claim 7 is characterized in that: The invention also includes a stabilizing device, which includes a storage box (151), a fixed frame (152), a sliding frame (153), a fixed block (154) and a nozzle (155). The storage box (151) is fixedly installed below the mounting plate (2), the fixed frame (152) is fixedly installed inside the storage box (151), the sliding frame (153) is slidably installed on the inner wall of the fixed frame (152), the fixed block (154) is fixedly installed below the mounting plate (2), the nozzle (155) is fixedly penetrated through the inner and outer walls of the sliding frame (153), and a pressure valve is arranged inside the nozzle (155).

9. The nut missing detection device based on automobile film capacitor housing assembly according to claim 8 is characterized in that: The sliding frame (153) slides through the inner and outer walls of the storage box (151), a No. 3 spring (156) is arranged between the sliding frame (153) and the inner wall of the fixed frame (152), an oil inlet (157) is provided on the surface of the fixed frame (152), a connecting hole (158) is provided on the surface of the sliding frame (153), and a connecting hole (159) is provided on the surface of the sliding rod (143).

10. A method for detecting nut missing assembly based on automobile film capacitor housing assembly according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: The capacitor housing is transported to the position to be inspected by the transport mechanism, and then the mechanical arm (3) is started, and the mechanical arm (3) moves to drive the receiving plate (5) to approach the capacitor housing and inspect the nut inspection position on its surface; Step 2: The receiving plate (5) moves to drive the detection rod (6) to move. When the detection rod (6) moves to contact the nut, it moves upward under the action of the nut. The detection rod (6) moves upward to drive the connecting seat (10) to move upward; Step 3: The connecting seat (10) moves upward to drive one end of the connecting rod (11) to move upward, and the one end of the connecting rod (11) moves upward to drive the probe rod (9) to move toward the proximity switch 7 through the other end; Step 4: When the probe rod (9) moves to the bottom of the proximity switch (7), the proximity switch (7) receives the signal and sends the signal to the terminal, and the missing or improper installation of the nut is detected by the signal transmission and the transmission time difference.

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