An automobile special-shaped accessory size detection device

Abstract

The present invention relates to the field of dimensional inspection of automotive parts. Specifically, it relates to a dimensional inspection device for special-shaped automotive parts, which includes a main body of the inspection device. The main body of the inspection device includes a fixing mechanism and an inspection mechanism arranged above the fixing mechanism; the inspection mechanism includes an installation cylinder, an installation column is arranged in the installation cylinder, and an inspection head is arranged at the bottom end of the installation column; the inspection mechanism also includes a circuit structure, the circuit structure includes a conductive part fixedly arranged in the installation cylinder, and a conductive ring is arranged at the upper end of the installation column; an indicator light and a storage battery are arranged at the installation plate. When the conductive ring contacts the conductive part, the conductive ring, the conductive part, the indicator light and the storage battery form a closed circuit. Compared with the traditional manual measurement method, the present invention not only significantly shortens the inspection time, improves the inspection efficiency, and meets the requirements for rapid inspection of automotive parts in mass production. At the same time, it effectively avoids these human errors and ensures the accuracy and reliability of the inspection results.

Description

Technical Field

[0001] The present invention relates to the field of dimensional inspection of automotive parts, and more specifically, to a dimensional inspection device for special-shaped automotive parts. Background Art

[0002] In the process of large-scale industrial production of automobiles, a large number of automotive parts need to be assembled. Automotive parts mainly include steel parts and plastic parts. Among them, steel parts are mostly formed by die-casting process, and plastic parts are usually manufactured by injection molding process. To ensure the precise assembly of numerous parts, after the production of automotive parts, it is necessary to conduct inspections on them. The inspection items generally include the aperture size of the part holes on the automotive parts and the distance between the holes, so as to determine whether the parts meet the established standards. Only the automotive parts that pass the inspection can enter the assembly link.

[0003] The existing inspection methods mostly adopt manual inspection methods. Operators need to use vernier calipers to measure the aperture and the distance between the holes of automotive parts one by one. However, this method is only applicable to automotive parts with a small number of holes, and there are inevitably measurement errors in the manual measurement process.

[0004] Currently, there are also technical solutions for detecting the holes on automotive parts using a vision inspection system. Its working mechanism is as follows: An industrial camera installed at a specific position captures the images of the part holes on the automotive parts, and then an image processing software is used to analyze the acquired images, so as to measure parameters such as the size, shape, and position of the part holes, and compare the measurement results with the preset standard values, and then determine whether the holes meet the requirements. However, this vision inspection system has problems such as long detection time, high construction cost, and requires professional personnel for maintenance during use, which requires high human and financial investment from enterprises. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions.

[0006] A dimensional inspection device for special-shaped automotive parts, which includes a detection device body. The detection device body includes a workbench, and a fixing mechanism for fixing the automotive part to be detected is provided at the workbench; the detection device body also includes a mounting plate arranged above the fixing mechanism, and a detection mechanism for detecting the automotive part is provided at the mounting plate;

[0007] The detection mechanism includes an installation cylinder disposed at the lower end surface of the installation plate and perpendicular to the lower end surface of the installation plate. An installation column that can slide along its axial direction is provided in the installation cylinder. A detection head that is in clearance fit with the hole of the automotive part to be detected is provided at the bottom end of the installation column. The detection mechanism further includes a circuit structure. The circuit structure includes a conductive member fixedly provided in the installation cylinder, and a conductive ring is provided at the upper end of the installation column. An indicator light and a storage battery are provided on the installation plate. When the conductive ring contacts the conductive member, the conductive ring, the conductive member, the indicator light, and the storage battery form a closed circuit.

[0008] The detection device body further includes a lifting mechanism for realizing the vertical movement of the detection mechanism. A detection head flange with a diameter larger than the hole of the part to be detected is provided at the upper end of the detection head. The detection head flange is used to abut against the edge of the part hole when the detection mechanism moves downward so that the conductive ring at the installation column moves to contact the conductive member.

[0009] As a preferred solution of the present invention, an internal thread through hole is provided in the installation cylinder. A sleeve is provided in the installation cylinder. An external thread of the sleeve that is matched with the internal thread through hole is provided on the outer side wall of the sleeve. The upper end of the installation column extends into the sleeve and can slide along the axial direction of the sleeve. An adjusting mechanism for adjusting the position of the sleeve in the installation cylinder is provided on the installation column.

[0010] As a preferred solution of the present invention, the adjusting mechanism includes a sliding cavity provided at the bottom end of the sleeve. The side wall in the middle of the installation column expands outward to form an installation column flange that is in clearance fit with the sliding cavity. A bottom plate for limiting the installation column flange in the sliding cavity is provided at the bottom end of the sleeve. A tooth groove located in the sliding cavity is provided on the bottom plate. A clamping tooth is provided on the lower end surface of the installation column flange. The clamping tooth is used to cooperate with the tooth groove to drive the sleeve to rotate by rotating the installation column.

[0011] As a preferred solution of the present invention, a conductive member installation cavity communicating with the inner cavity of the sleeve is provided in the sleeve. The conductive member includes a first conductive head slidably provided in the conductive member installation cavity. A conductive head spring for pressing the end of the first conductive head into the inner cavity of the sleeve is provided in the conductive member installation cavity. The conductive member further includes a second conductive head provided at the upper end of the sleeve. The end of the second conductive head extends out of the upper end surface of the sleeve. The second conductive head and the first conductive head are electrically connected through a connecting cable. A pressing plate is provided in the installation cylinder at the upper end of the sleeve. A conductive ring is provided on the pressing plate. A pressing plate spring for pressing the conductive ring against the second conductive head to keep contact is provided in the installation cylinder. A first wire extending out of the sleeve is provided on the conductive ring. The conductive ring includes an annular conductive seat provided at the upper end of the installation column. A connecting head is provided on the annular conductive seat. A second wire is provided at the connecting head. The end of the second wire extends out of the sleeve.

[0012] As a preferred embodiment of the present invention, a conductive seat through hole is provided at the annular conductive seat, a mounting post screw hole is provided at the upper end surface of the mounting post, an insulating seat is provided at the upper end of the annular conductive seat, an insulating seat through hole is provided at the insulating seat, and a half-thread bolt passing through the conductive seat through hole and mating with the mounting post screw hole to fix the annular conductive seat to the upper end of the mounting post is provided in the insulating seat through hole.

[0013] As a preferred embodiment of the present invention, a mounting post spring located at the upper end of the mounting post and used for abutting against the mounting post is provided in the sleeve.

[0014] As a preferred embodiment of the present invention, the inner wall of the upper end of the sleeve expands outwards to form an upper expansion cavity of the sleeve, an internal thread of the sleeve is provided on the inner wall of the upper expansion cavity of the sleeve, an externally threaded cover plate mating with the internal thread of the sleeve is provided in the upper expansion cavity of the sleeve, and a rotating mechanism for rotating the externally threaded cover plate is provided in the sleeve.

[0015] As a preferred embodiment of the present invention, a hexagonal cover plate through hole is provided in the middle of the externally threaded cover plate, the rotating mechanism includes a connecting cylinder provided on the upper end surface of the insulating seat, a second wire passes through the connecting cylinder, a hexagonal protrusion with a clearance fit with the cover plate through hole is provided at the upper end of the connecting cylinder, and the hexagonal protrusion is used for inserting into the cover plate through hole to drive the externally threaded cover plate to rotate by rotating the mounting post.

[0016] As a preferred embodiment of the present invention, the lifting mechanism includes a mounting frame provided on the workbench, a lead screw perpendicular to the workbench is rotatably provided on the mounting frame, and a driving motor for driving the lead screw to rotate is provided on the mounting frame; a lead screw slider is provided on the lead screw, and a connecting rod for connecting with the mounting plate to move the mounting plate along with the lead screw slider is provided on the lead screw slider.

[0017] As a preferred embodiment of the present invention, the fixing mechanism includes a placement rack provided on the workbench, a suction cup mounting seat is provided in the placement rack, and a pneumatic suction cup is provided at the suction cup mounting seat.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The detection mechanism in the present invention can quickly and accurately judge whether the size and position of the fitting hole meet the standards. Compared with the traditional manual measurement method, it not only significantly shortens the detection time, improves the detection efficiency, and meets the requirements for rapid detection of automotive parts in large-scale production. At the same time, with precise mechanical structures and stable circuit detection systems, these human errors are effectively avoided, ensuring the accuracy and reliability of the detection results, and providing strong technical support for the quality control of automotive parts.

[0020] 2. In the present invention, the diameter of the detection head flange is designed to be larger than the diameter of the hole of the fitting to be detected, and the diameter difference between the two is controlled within the range of 0.4 mm - 0.8 mm. This can not only ensure the effective function of the detection head flange during the detection process, but also guarantee the accuracy and reliability of the detection.

[0021] 3. In the detection mechanism of the present invention, the position of the sleeve in the installation cylinder is adjusted through the adjustment mechanism, which can meet the detection requirements of fitting holes with different heights. There is no need to design a separate detection device for different fitting holes, effectively improving the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the automotive special-shaped fitting size detection device in Embodiment 1;

[0023] Figure 2 is Figure 1 a schematic structural diagram of the installation cylinder in;

[0024] Figure 3 is Figure 2 a sectional view of the installation cylinder in;

[0025] Figure 4 is Figure 1 an exploded view of the structure of the installation cylinder in;

[0026] Figure 5 is Figure 3 a schematic structural diagram of the installation column in;

[0027] Figure 6 is Figure 4 an enlarged view of part A in;

[0028] Figure 7 is Figure 3 a schematic structural diagram of the annular conductive seat in;

[0029] Figure 8 is Figure 4 a schematic structural diagram of the insulating seat in;

[0030] Figure 9 is Figure 3 a half-sectional view of the sleeve in;

[0031] Figure 10 is Figure 4 a schematic structural diagram of the external thread cover plate in.

[0032] Figure 11 is Figure 1 a schematic structural diagram of the workbench in.

[0033] The reference numerals are as follows:

[0034] 100. Detection device body; 110. Workbench; 120. Mounting plate; 130. Mounting cylinder; 140. Mounting column; 150. Indicator light; 160. Mounting frame; 170. Lead screw; 180. Driving motor; 190. Lead screw slider; 1100. Connecting rod; 1110. Placing rack; 210. Detection head; 220. Detection head flange; 310. Conductive part; 311. First conductive head; 312. Second conductive head; 313. Connecting cable; 320. Conductive ring; 321. Annular conductive seat; 322. Connector; 323. Second wire; 330. Internal thread through hole; 340. Sleeve; 350. Sleeve external thread; 360. Sliding cavity; 370. Mounting column flange; 380. Base plate; 390. Pressure plate; 3100. Pressure plate spring; 410. Tooth groove; 420. Conductive circular ring; 430. First wire; 440. Mounting column screw hole; 450. Insulating seat; 460. Half-thread bolt; 470. Mounting column spring; 480. External thread cover plate; 510. Locking tooth; 610. Conductive part mounting cavity; 620. Conductive head spring; 710. Conductive seat through hole; 810. Insulating seat through hole; 820. Connecting cylinder; 830. Hexagonal protrusion; 910. Sleeve upper expansion cavity; 920. Sleeve internal thread; 1010. Cover plate through hole; 1120. Pneumatic suction cup; 1130. Suction cup mounting seat. Detailed implementation manners

[0035] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the drawings and embodiments. It should be understood that the embodiments are only for explaining the present invention rather than limiting it.

[0036] Embodiment 1

[0037] As Figure 1-3 shown, this embodiment provides a detection device for the size of special-shaped automotive parts. The device mainly consists of a detection device body 100. The detection device body 100 includes a workbench 110. A fixing mechanism is arranged on the workbench 110, and its function is to firmly fix the automotive parts to be detected, ensuring the stable position of the parts during the detection process and avoiding affecting the accuracy of the detection results due to the movement of the parts. Combining Figure 11 shown, the fixing mechanism includes a placing rack 1110 arranged at the workbench 110. A suction cup mounting seat 1130 is provided in the placing rack 1110, and a pneumatic suction cup 1120 is provided at the suction cup mounting seat 1130.

[0038] The pneumatic suction cup 1120 generates an adsorption force by connecting to an external air source system and using the compressed air provided by the air source. When the air source is turned on and the compressed air enters the air chamber inside the pneumatic suction cup 1120, it will pass through the designed air flow channels and structures, causing a relatively low pressure to form in the surface area of the pneumatic suction cup 1120 in contact with the automotive parts. Under the action of the atmospheric pressure outside the suction cup, the pressure difference formed due to the internal low pressure will cause the pneumatic suction cup 1120 to tightly adsorb on the surface of the automotive parts, thereby achieving the fixation of the automotive parts. When it is necessary to release the parts, turn off the air source, the pressure inside the pneumatic suction cup 1120 gradually balances with the outside world, and the adsorption force disappears, and the automotive parts can be easily removed.

[0039] Above the fixing mechanism, there is a mounting plate 120, and a detection mechanism is mounted on the mounting plate 120 for dimension detection of automotive parts. The detection mechanism includes a mounting cylinder 130, and the mounting cylinder 130 is vertically mounted on the lower end surface of the mounting plate 120. An installation column 140 is arranged inside the mounting cylinder 130, and the installation column 140 can slide along the axial direction of the mounting cylinder 130. A detection head 210 is installed at the bottom end of the installation column 140, and the detection head 210 is in clearance fit with the hole on the automotive part to be detected. This kind of fit can not only ensure that the detection head smoothly inserts into the part hole, but also ensure the accuracy of the detection result. At the same time, the detection mechanism also includes a circuit structure, and the circuit structure includes a conductive part 310 fixed inside the mounting cylinder 130 and a conductive ring 320 installed at the upper end of the installation column 140. An indicator light 150 and a storage battery are arranged on the mounting plate 120. When the conductive ring 320 comes into contact with the conductive part 310, the conductive ring 320, the conductive part 310, the indicator light 150 and the storage battery will form a complete closed circuit.

[0040] The detection device body 100 is also provided with a lifting mechanism, and its function is to realize the vertical movement of the detection mechanism. A detection head flange 220 is designed at the upper end of the detection head 210, and the diameter of the detection head flange 220 is larger than the diameter of the hole of the part to be detected. During the detection process, when the detection mechanism moves downward driven by the lifting mechanism, the detection head flange 220 will abut against the edge of the part hole. As the detection mechanism continues to press down, the installation column 140 will move upward under the action of the detection head flange 220, and then the conductive ring 320 on the installation column 140 will move to contact the conductive part 310. At this time, the closed circuit is turned on and the indicator light 150 lights up to judge whether the size and position of the part hole meet the standards.

[0041] Combined with Figure 10As shown, the lifting mechanism includes a mounting frame 160 arranged at the workbench 110, a screw rod 170 arranged perpendicular to the workbench 110 is rotatably arranged at the mounting frame 160, and a driving motor 180 for driving the screw rod 170 to rotate is provided at the mounting frame 160; a screw rod slider 190 is provided at the screw rod 170, and a connecting rod 1100 is provided at the screw rod slider 190 for connecting with the mounting plate 120 so that the mounting plate 120 moves with the screw rod slider 190.

[0042] When the driving motor 180 is powered on and started, the output shaft drives the screw 170 to rotate. The screw 170 is installed on the mounting frame 160 perpendicular to the workbench 110, and the screw slider 190 is threadedly matched with the screw 170. The rotation of the screw 170 causes the screw slider 190 to produce linear motion along the axial direction of the screw 170. Since the screw slider 190 is connected to the mounting plate 120 through the connecting rod 1100, the linear motion of the screw slider 190 will be transmitted to the mounting plate 120, driving the mounting plate 120 and the detection mechanism thereon (such as the mounting cylinder 130, the mounting column 140 and the detection head 210, etc.) to rise or fall synchronously. When the drive motor 180 runs forward, the screw rod 170 drives the screw slider 190 to move downward, and the detection mechanism descends accordingly, and the detection head 210 approaches and inserts into the accessory hole of the automotive accessory for detection; when the drive motor 180 runs reversely, the screw rod 170 drives the screw slider 190 to move upward, the detection mechanism rises, and the detection head 210 withdraws from the accessory hole, completing a lifting and lowering action of a detection cycle.

[0043] Before using the device, it is necessary to calculate the installation position of each mounting cylinder 130 on the mounting plate 120 based on the three-dimensional model of the automotive parts using professional calculation methods. After completing the position calculation, the mounting cylinder 130 is firmly mounted on the mounting plate 120 by bolting. After the installation is completed, a high-precision measuring tool is used to accurately measure the distance between the detection heads 210 at the mounting plate 120 to ensure that the distance is completely consistent with the hole spacing of the accessories set in the three-dimensional model of the automotive parts, providing a solid foundation for subsequent detection.

[0044] When performing the detection operation, first place the automotive accessory to be detected on the fixing mechanism, and use the stable clamping effect of the fixing mechanism to ensure that the accessory will not be displaced during the detection process. Subsequently, start the lifting mechanism, which drives the mounting plate 120 to move downward at a steady and precise speed, so that the detection head 210 can be accurately inserted into the accessory hole of the automotive accessory. In this embodiment, the diameter of the detection head flange 220 is designed to be larger than the diameter of the accessory hole to be detected, and the diameter difference between the two is controlled within the range of 0.4mm-0.8mm. This difference range has been determined through experiments and optimization, which can not only ensure that the detection head flange 220 plays an effective role in the detection process, but also ensure the accuracy and reliability of the detection.

[0045] When the mounting plate 120 is continuously pressed down, the detection head flange 220 will gradually abut against the edge part of the fitting hole. Due to the interaction between the detection head flange 220 and the edge of the fitting hole, the mounting post 140 will move upward under the push of this external force. As the mounting post 140 rises, the conductive ring 320 on the mounting post 140 will also move accordingly until it comes into contact with the conductive member 310. Once the conductive ring 320 contacts the conductive member 310, the closed loop composed of the conductive ring 320, the conductive member 310, the indicator light 150 and the storage battery will be conducted, and at this time the indicator light 150 will light up, intuitively indicating that the size of the fitting hole meets the preset standard.

[0046] In the actual detection process, there are various situations that may affect the detection results. If the actual position of the fitting hole on the automotive part deviates from the position set based on the 3D model, or the aperture of the fitting hole is smaller than the standard size, the detection head 210 will not be able to be inserted into the fitting hole normally, but will directly abut against the surface of the automotive part. In this case, as the mounting post 140 moves upward, the conductive ring 320 will come into brief contact with the conductive member 310, and the indicator light 150 will light up briefly. However, as the mounting post 140 continues to move upward, the conductive ring 320 will disengage from the conductive member 310, and the indicator light 150 will go out. On the contrary, if the aperture of the fitting hole is too large, the detection head flange 220 will directly pass through the fitting hole, the mounting post 140 will not be able to move upward as the detection mechanism descends, the conductive ring 320 and the conductive member 310 will not be able to contact, and the indicator light 150 will not light up.

[0047] In this embodiment, through the setting of the detection mechanism and the lifting mechanism, by only controlling the lifting mechanism to move the detection mechanism downward and observing the state change of the indicator light 150, it is possible to quickly and accurately judge whether the size and position of the fitting hole meet the standard. Compared with the traditional manual measurement method, this device has significant advantages. On the one hand, it can detect all the fitting holes on the automotive parts at the same time, without the need for individual measurement, which preferably shortens the detection time, improves the detection efficiency, and meets the requirements for rapid detection of automotive parts in mass production. On the other hand, the manual detection process will inevitably be affected by human factors such as measurement methods and visual errors, resulting in deviations in the detection results. However, this device adopts a precise mechanical structure and a stable circuit detection system, effectively avoiding these human errors, ensuring the accuracy and reliability of the detection results, and providing strong technical support for the quality control of automotive parts.

[0048] Combined with Figure 4 、 5As shown, an internally threaded through hole 330 is provided in the mounting cylinder 130. A sleeve 340 is provided in the mounting cylinder 130. An external thread 350 of the sleeve that mates with the internally threaded through hole 330 is provided on the outer sidewall of the sleeve 340. The upper end of the mounting post 140 extends into the sleeve 340 and can slide along the axial direction of the sleeve 340. An adjusting mechanism for adjusting the position of the sleeve 340 in the mounting cylinder 130 is provided on the mounting post 140. The adjusting mechanism includes a sliding cavity 360 provided at the bottom end of the sleeve 340. A flange 370 of the mounting post that has a clearance fit with the sliding cavity 360 is formed by outward expansion of the sidewall in the middle of the mounting post 140. A bottom plate 380 for limiting the flange 370 of the mounting post in the sliding cavity 360 is provided at the bottom end of the sleeve 340. A tooth groove 410 located in the sliding cavity 360 is provided at the bottom plate 380. A locking tooth 510 is provided at the lower end face of the flange 370 of the mounting post. The locking tooth 510 is used to cooperate with the tooth groove 410 to drive the sleeve 340 to rotate by rotating the mounting post 140.

[0049] During specific detection, the heights of the fitting holes on the special-shaped automotive fittings may be inconsistent. Rotate the mounting post 410, and drive the sleeve 340 to rotate through the cooperation between the locking tooth 510 on the mounting post 140 and the tooth groove 410 on the bottom plate 380, so as to realize the adjustment of the position of the sleeve 340 in the mounting cylinder 130, and make the distances from the detection heads 210 at different mounting cylinders 130 to the fitting holes the same. With the help of this adjustable structure, the detection device can adapt to the detection requirements of fitting holes with different heights, without the need to separately design detection devices for different fitting holes, effectively improving the versatility of the equipment.

[0050] At the same time, when component wear occurs or relevant parts need to be replaced during the long-term use of the detection device, since the sleeve 340 and the mounting cylinder 130 are connected by threads, and the structure of the adjusting mechanism is relatively independent, it is convenient for disassembly and installation. For example, if the external thread 350 of the sleeve 340 is worn, it can be easily screwed out of the mounting cylinder 130 for replacement; if the locking tooth 510 or the tooth groove 410 of the adjusting mechanism is damaged, the relevant components can also be repaired or replaced relatively easily, reducing the maintenance difficulty and cost of the equipment.

[0051] Combined with Figure 6As shown, a conductive component installation cavity 610 communicating with the inner cavity of the sleeve 340 is provided in the sleeve 340. The conductive component 310 includes a first conductive head 311 slidably disposed in the conductive component installation cavity 610. A conductive head spring 620 for pressing the end of the first conductive head 311 into the inner cavity of the sleeve 340 is provided in the conductive component installation cavity 610. The conductive component 310 further includes a second conductive head 312 disposed at the upper end of the sleeve 340. The end of the second conductive head 312 extends out of the upper end face of the sleeve 340. The second conductive head 312 and the first conductive head 311 are electrically connected through a connecting cable 313. A pressing plate 390 located at the upper end of the sleeve 340 is provided in the mounting cylinder 130. A conductive ring 420 is provided at the pressing plate 390. A pressing plate spring 3100 for pressing the conductive ring 420 against and keeping contact with the second conductive head 312 is provided in the mounting cylinder 130. A first wire 430 extending out of the sleeve 340 is provided at the conductive ring 420. The conductive ring 320 includes an annular conductive seat 321 disposed at the upper end of the mounting post 140. A connector 322 is provided at the annular conductive seat 321. A second wire 323 is provided at the connector 322. The end of the second wire 323 extends out of the sleeve 340.

[0052] When the detection mechanism moves downward, the detection head 210 is inserted into the fitting hole of the automotive part. If the size of the fitting hole is appropriate, the detection head flange 220 will abut against the edge of the fitting hole, causing the mounting post 140 to move upward. The annular conductive seat 321 at the upper end of the mounting post 140 rises accordingly, driving the connector 322 and the second wire 323 to move.

[0053] Internal conductive components cooperate to conduct the circuit: In the sleeve 340, under the action of the conductive head spring 620, the first conductive head 311 in the conductive component installation cavity 610 always has a tendency to extend into the inner cavity of the sleeve 340. When the mounting post 140 rises to a certain extent, the annular conductive seat 321 contacts the first conductive head 311. At this time, the current starts from the battery, flows through the first wire 430 to the conductive ring 420, then is conducted through contact with the second conductive head 312, reaches the first conductive head 311 through the connecting cable 313, and then passes through the annular conductive seat 321, the connector 322 and the second wire 323, and finally returns to the indicator light 150 and the battery, forming a complete closed loop. The indicator light 150 lights up, indicating that the size of the fitting hole meets the standard.

[0054] Through the above-designed conductive components and circuit connection methods, it can accurately judge whether the size of the fitting hole meets the standard. Compared with the traditional detection method, this structure converts mechanical actions into circuit signals, avoiding errors that may occur in manual reading, greatly improving the detection accuracy, and ensuring that only automotive special-shaped parts that meet the size requirements enter the subsequent production process.

[0055] Combined with Figure 7As shown, a conductive seat through-hole 710 is provided at the annular conductive seat 321, a mounting post screw hole 440 is provided at the upper end surface of the mounting post 140, an insulating seat 450 is provided at the upper end of the annular conductive seat 321, an insulating seat through-hole 810 is provided at the insulating seat 450, and a half-thread bolt 460 is provided in the insulating seat through-hole 810 and passes through the conductive seat through-hole 710 and cooperates with the mounting post screw hole 440 to fix the annular conductive seat 321 to the upper end of the mounting post 140.

[0056] By providing a conductive seat through-hole 710 in the annular conductive seat 321 and a mounting post screw hole 440 in the mounting post 140, the half-thread bolt 460 passes through the insulating seat through-hole 810 and the conductive seat through-hole 710 in sequence and then cooperates with the mounting post screw hole 440 to be tightened. The threaded structure of the half-thread bolt 460 generates an axial tension during the tightening process, tightly fixing the annular conductive seat 321 to the upper end of the mounting post 140, ensuring that the annular conductive seat 321 will not loosen due to displacement or other factors during the detection process, maintaining the relative position stability with other conductive components, and ensuring the stability of the detection circuit connection.

[0057] Combined Figure 8 、 9 As shown, a mounting post spring 470 is provided in the sleeve 340 at the upper end of the mounting post 140 and is used to abut against the mounting post 140. The inner wall of the upper end of the sleeve 340 expands outward to form an upper expansion cavity 910 of the sleeve. A sleeve internal thread 920 is provided on the inner wall of the upper expansion cavity 910 of the sleeve. An external thread cover plate 480 that cooperates with the sleeve internal thread 920 is provided in the upper expansion cavity 910 of the sleeve. A rotating mechanism for rotating the external thread cover plate 480 is provided in the sleeve 340. A hexagonal cover plate through-hole 1010 is provided in the middle of the external thread cover plate 480. The rotating mechanism includes a connecting cylinder 820 provided on the upper end surface of the insulating seat 450. The second wire 323 passes through the connecting cylinder 820. A hexagonal protrusion 830 that has a clearance fit with the cover plate through-hole 1010 is provided at the upper end of the connecting cylinder 820. The hexagonal protrusion 830 is used to insert into the cover plate through-hole 1010 to drive the external thread cover plate 480 to rotate by rotating the mounting post 140.

[0058] The mounting post spring 470 in the sleeve 340 is at the upper end of the mounting post 140 and abuts against the mounting post 140. During the detection process, when the detection head 210 is inserted into the fitting hole of the automotive part, the detection head flange 220 will interact with the edge of the fitting hole, pushing the mounting post 140 to slide upward. At this time, the mounting post spring 470 is compressed, generating elastic deformation and storing elastic potential energy. Once the detection operation is completed, the lifting mechanism drives the mounting plate 120 to rise, the upward thrust on the mounting post 140 disappears, and the mounting post spring 470 returns to its original state by virtue of the stored elastic potential energy, releasing a downward elastic force, pushing the mounting post 140 to slide downward, enabling the detection head 210 to smoothly withdraw from the fitting hole and return to the initial detection preparation position.

[0059] The external-threaded cover plate 480 and the sleeve 340 are fitted through the internal thread 920 of the sleeve on the inner wall of the expansion cavity 910 of the sleeve and its own external thread. When the mounting post 140 is rotated, since the insulating seat 450 is fixed to the mounting post 140, the connecting cylinder 820 is arranged on the upper end surface of the insulating seat 450, and the hexagonal protrusion 830 at the upper end of the connecting cylinder 820 is inserted into the regular hexagonal cover plate through hole 1010 in the middle of the external-threaded cover plate 480. The rotation of the mounting post 140 will drive the insulating seat 450 and the connecting cylinder 820 to rotate together, and then the hexagonal protrusion 830 will rotate in the cover plate through hole 1010, driving the external-threaded cover plate 480 to rotate. When the external-threaded cover plate 480 rotates, according to the principle of screw drive, it will move axially along the sleeve 340. Since the mounting post spring 470 is located inside the sleeve 340 and one end abuts against the inner wall of the sleeve 340 and the other end acts on the upper end of the mounting post 140, when the external-threaded cover plate 480 moves axially, the distance between it and the upper end of the mounting post 140 will change. When the external-threaded cover plate 480 moves towards the mounting post 140, it will further compress the mounting post spring 470 and increase its compression amount; conversely, when the external-threaded cover plate 480 moves away from the mounting post 140, the compression amount of the mounting post spring 470 will decrease, thereby realizing the adjustment of the compression amount of the mounting post spring 470.

[0060] For the materials of different special-shaped automotive accessories, by adjusting the compression amount of the mounting post spring 470, the resistance of the mounting post 140 moving upward during detection can be changed. For example, for accessories with a harder material, increasing the compression amount of the mounting post spring 470 can make the mounting post 140 move upward more stably when the detection head 210 is inserted into the accessory hole. For accessories with a softer material, reducing the compression amount of the mounting post spring 470 can avoid damaging the accessories when the detection head 210 is inserted, and at the same time ensure the smooth reset of the mounting post 140, so that the detection device can better adapt to the detection of various automotive accessories and improve the versatility of the equipment.

[0061] The working principle of the special-shaped automotive accessory size detection device in this embodiment is as follows:

[0062] 1. Place the accessory to be detected

[0063] Place the automotive accessory to be detected stably on the placement rack 1110 of the workbench 110, ensure that the contact area between the accessory surface and the pneumatic suction cup 1120 is aligned, and open the air source valve of the pneumatic suction cup 1120 to form negative pressure inside the suction cup to adsorb the automotive accessory.

[0064] 2. Positioning and detection of the detection head

[0065] Start the drive motor 180, the lead screw 170 rotates forward, driving the lead screw slider 190 and the mounting plate 120 to move vertically downward, so that the detection head 210 moves towards the center of the accessory hole.

[0066] Normal detection state

[0067] When the detection head 210 is inserted into the fitting hole, the flange 220 of the detection head, with a diameter 0.4 - 0.8 mm larger than the fitting hole, continues to descend along with the mounting plate 120 until it abuts against the edge of the fitting hole.

[0068] When the size and position of the fitting hole are qualified, the flange 220 of the detection head abuts against the edge, pushing the mounting post 140 to slide axially upward along the mounting cylinder 130, making the conductive ring 320 contact the conductive part 310, closing the conduction of the closed loop, and the indicator light 150 lights up.

[0069] Abnormal detection state

[0070] If the aperture of the fitting hole is too small or there is a position deviation, the detection head 210 cannot be fully inserted. The flange 220 of the detection head abuts against the surface of the fitting in advance, and the sliding of the mounting post 140 causes the conductive ring 320 to contact the conductive part 310 briefly. After the indicator light 150 lights up, it goes out.

[0071] If the aperture of the fitting hole is too large, the flange 220 of the detection head passes through the fitting hole, the mounting post 140 has no upward displacement, the conductive ring 320 does not contact the conductive part 310, and the indicator light 150 never lights up.

[0072] 3. Judgment and recording of detection results

[0073] Based on the state of the indicator light 150:

[0074] Qualified: The indicator light 150 lights up, and there is no jamming during the insertion process of the detection head 210, and the clearance fit between the fitting hole and the detection head 210 is smooth.

[0075] Unqualified: The indicator light 150 does not light up or lights up briefly.

[0076] 4. Completion of detection and reset

[0077] The drive motor 180 runs in the reverse direction, and the lead screw 170 drives the mounting plate 120 to rise at the same speed until the detection head 210 completely exits the fitting hole, and the flange 220 of the detection head is 5 - 10 cm higher than the surface of the fitting. Close the air source valve of the pneumatic suction cup 1120. Wait until the pressure inside the suction cup is balanced with the outside, and then manually remove the fitting.

[0078] In summary, the above is only the preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by the patent of the present invention.

Claims

1. An automobile special-shaped accessory size detection device, characterized in that: It includes a detection device body (100). The detection device body (100) includes a workbench (110), and a fixing mechanism for fixing the automotive parts to be detected is provided at the workbench (110). The detection device body (100) further includes a mounting plate (120) disposed above the fixing mechanism, and a detection mechanism for detecting the automotive parts is provided at the mounting plate (120). The detection mechanism includes a mounting cylinder (130) disposed on the lower end face of the mounting plate (120) and perpendicular to the lower end face of the mounting plate (120). An installation column (140) capable of sliding along its axis is provided in the mounting cylinder (130). A detection head (210) which is in clearance fit with the hole of the automotive parts to be detected is provided at the bottom end of the installation column (140). The detection mechanism further includes a circuit structure. The circuit structure includes a conductive member (310) fixedly provided in the mounting cylinder (130), and a conductive ring (320) is provided at the upper end of the installation column (140). An indicator light (150) and a storage battery are provided at the mounting plate (120). When the conductive ring (320) contacts the conductive member (310), the conductive ring (320), the conductive member (310), the indicator light (150) and the storage battery form a closed loop. The detection device body (100) further includes a lifting mechanism for realizing the vertical movement of the detection mechanism. A detection head flange (220) with a diameter larger than the hole of the parts to be detected is provided at the upper end of the detection head (210). The detection head flange (220) is used to abut against the edge of the parts hole when the detection mechanism moves downward so that the conductive ring (320) at the installation column (140) moves to contact the conductive member (310). An internal thread through hole (330) is provided in the mounting cylinder (130). A sleeve (340) is provided in the mounting cylinder (130). An external thread (350) of the sleeve which is matched with the internal thread through hole (330) is provided on the outer side wall of the sleeve (340). The upper end of the installation column (140) extends into the sleeve (340) and can slide along the axis direction of the sleeve (340). An adjusting mechanism for adjusting the position of the sleeve (340) in the mounting cylinder (130) is provided at the installation column (140). The adjusting mechanism includes a sliding cavity (360) provided at the bottom end of the sleeve (340). The side wall in the middle of the installation column (140) expands outward to form an installation column flange (370) which is in clearance fit with the sliding cavity (360). A bottom plate (380) for limiting the installation column flange (370) in the sliding cavity (360) is provided at the bottom end of the sleeve (340). A tooth groove (410) located in the sliding cavity (360) is provided at the bottom plate (380). A clamping tooth (510) is provided at the lower end face of the installation column flange (370). The clamping tooth (510) is used to cooperate with the tooth groove (410) to drive the sleeve (340) to rotate by rotating the installation column (140). The sleeve (340) is provided with a conductive component installation cavity (610) communicating with the inner cavity of the sleeve (340). The conductive component (310) includes a first conductive head (311) slidably disposed in the conductive component installation cavity (610). A conductive head spring (620) is provided in the conductive component installation cavity (610) for pressing the end of the first conductive head (311) into the inner cavity of the sleeve (340). The conductive component (310) further includes a second conductive head (312) disposed at the upper end of the sleeve (340). The end of the second conductive head (312) extends out of the upper end face of the sleeve (340). The second conductive head (312) and the first conductive head (311) are electrically connected through a connecting cable (313). A pressing plate (390) is provided in the installation cylinder (130) at the upper end of the sleeve (340). A conductive ring (420) is provided at the pressing plate (390). A pressing plate spring (3100) is provided in the installation cylinder (130) for pressing the conductive ring (420) against the second conductive head (312) to keep contact. A first wire (430) extending out of the sleeve (340) is provided at the conductive ring (420); the conductive ring (320) includes an annular conductive seat (321) provided at the upper end of the installation column (140). A connector (322) is provided at the annular conductive seat (321). A second wire (323) is provided at the connector (322). The end of the second wire (323) extends out of the sleeve (340).

2. The size detection device for an abnormal-shaped automotive accessory according to claim 1, wherein: A conductive seat through hole (710) is provided at the annular conductive seat (321). An installation column screw hole (440) is provided at the upper end face of the installation column (140). An insulating seat (450) is provided at the upper end of the annular conductive seat (321). An insulating seat through hole (810) is provided at the insulating seat (450). A half-thread bolt (460) passing through the conductive seat through hole (710) and mating with the installation column screw hole (440) is provided in the insulating seat through hole (810) to fix the annular conductive seat (321) to the upper end of the installation column (140).

3. The size detection device for special-shaped automotive accessories according to claim 2, wherein: An installation column spring (470) is provided in the sleeve (340) at the upper end of the installation column (140) and for abutting against the installation column (140).

4. The dimension detection device for special-shaped automobile accessories according to claim 3, wherein: The inner wall of the upper end of the sleeve (340) expands outward to form an upper expansion cavity (910) of the sleeve. An internal thread of the sleeve (920) is provided at the inner wall of the upper expansion cavity (910) of the sleeve. An externally threaded cover plate (480) mating with the internal thread of the sleeve (920) is provided in the upper expansion cavity (910) of the sleeve. A rotating mechanism for rotating the externally threaded cover plate (480) is provided in the sleeve (340).

5. The size detection device for an abnormal-shaped automotive accessory according to claim 4, wherein: A cover plate through hole (1010) in the shape of a regular hexagon is provided in the middle of the externally threaded cover plate (480). The rotating mechanism includes a connecting cylinder (820) provided at the upper end face of the insulating seat (450). The second wire (323) passes through the connecting cylinder (820). A hexagonal protrusion (830) with a clearance fit with the cover plate through hole (1010) is provided at the upper end of the connecting cylinder (820). The hexagonal protrusion (830) is used to insert into the cover plate through hole (1010) to drive the externally threaded cover plate (480) to rotate by rotating the installation column (140).

6. The size detection device for special-shaped automobile accessories according to claim 1, characterized in that: The lifting mechanism includes a mounting frame (160) provided at the workbench (110). A lead screw (170) perpendicular to the workbench (110) is rotatably provided at the mounting frame (160), and a driving motor (180) for driving the lead screw (170) to rotate is provided at the mounting frame (160). A lead screw slider (190) is provided on the lead screw (170), and a connecting rod (1100) connected to the mounting plate (120) is provided at the lead screw slider (190) to move the mounting plate (120) along with the lead screw slider (190).

7. An automobile special-shaped accessory size detection device according to claim 1, characterized in that: The fixing mechanism includes a placement rack (1110) provided at the workbench (110). A suction cup mounting seat (1130) is provided in the placement rack (1110), and a pneumatic suction cup (1120) is provided at the suction cup mounting seat (1130).

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