A nut installation, bending, and testing device and its working method

Abstract

This invention discloses a nut installation, bending, and inspection device, comprising: a workpiece loading device, a nut installation and inspection device, at least one bending device, and an inspection device. The workpiece loading device is located on one side of the nut installation and inspection device, with a workpiece transfer and loading device between them. The bending device is located on one side of the nut installation and inspection device, with a first robot for workpiece transfer between them. The inspection device is located on one side of the bending device, and a second robot transfers the workpiece between them. This nut installation, bending, and inspection device automates the loading, installation, and inspection processes, shortening the turnaround time between previously dispersed devices and effectively improving processing and inspection efficiency.

Description

Technical Field

[0001] This invention belongs to the field of manufacturing, and specifically relates to a nut installation, bending and testing equipment and working method. Background Technology

[0002] The process of processing the busbar requires inspection of the studs, installation of nuts, bending, and a series of tests on the processed products. The whole process is quite complicated. Traditionally, manual and semi-automatic equipment are used for processing, which is inefficient and consumes a lot of manpower and time. Before the workpiece is connected, the threads of the stud need to be inspected to prevent products with thread problems from flowing into the later stage and affecting its installation. Traditional inspection is done manually, which is inefficient. Currently, many inspection equipment is used, but products are prone to movement during inspection, which affects the accuracy of the inspection position and the inspection results. In addition, the busbar needs to be installed with nuts during the processing. After the nuts are installed, the plane between the busbar and the workpiece needs to be inspected. Traditionally, the nuts are installed manually and then inspected. This results in a large workload for the workers and makes it difficult to control the installation quality. Although there are automatic installation equipment, the workpiece still needs to be transported to the inspection equipment for inspection after installation. Although the installation is automated, the transfer of the workpiece still takes a lot of time, which seriously affects the assembly cycle. Meanwhile, during the processing of the busbar, it is necessary to test many parameters such as its size, nut concentricity, stud hole, resistance, and current. Most of the existing testing equipment is independent, and the workpiece needs to be transferred between various testing equipment during the testing process. This increases the transfer time between the various equipment during the workpiece testing process, wastes manpower, and seriously affects the production cycle. Therefore, the existing assembly and testing of busbar nuts still need to be improved. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the above shortcomings, the purpose of this invention is to provide a nut installation, bending and inspection device with a reasonable structural design and easy production, which automates the feeding, nut installation and inspection, bending and inspection, shortens the turnaround time between the original scattered equipment, and effectively improves its processing and inspection efficiency.

[0004] Technical Solution: To achieve the above objectives, this invention provides a nut installation, bending, and inspection device, comprising: a workpiece feeding device, a nut installation and inspection device, at least one bending device, and an inspection device. The workpiece feeding device is located on one side of the nut installation and inspection device, with a workpiece transfer feeding device between them. The bending device is located on one side of the nut installation and inspection device, with a first robot for workpiece transfer between them. The inspection device is located on one side of the bending device, with a second robot transferring the workpiece between them. This nut installation, bending, and inspection device automatically feeds, installs, and inspects the parallelism of the nuts using the workpiece feeding device. Qualified nuts are bent by the bending device and then centrally inspected on the inspection device. This automates the entire process from feeding, nut installation and inspection, to bending and inspection, shortening the transfer time between previously dispersed devices and effectively improving processing and inspection efficiency.

[0005] The workpiece loading equipment includes a loading frame, a turntable mechanism on the loading frame, at least one placement fixture on the turntable mechanism, and a stud detection mechanism located on the outside of the turntable mechanism.

[0006] The placement fixture includes a fixture body, a product placement area on the fixture body, and a limiting block located on the outside of the fixture body. It also includes a positioning mechanism, which is an adjustable positioning mechanism. By optimizing the structure of the tooling and positioning it using the positioning mechanism, the stability of the detection is improved. At the same time, the adjustable positioning mechanism also effectively improves the applicability of the product.

[0007] Furthermore, the frame of the nut installation and testing equipment is equipped with a second turntable mechanism, on which at least one placement fixture is mounted. An installation mechanism for nut assembly is located outside the second turntable mechanism. The workpiece transfer and feeding device transfers the workpiece from the workpiece feeding device to the placement fixture of the nut installation equipment, and the installation mechanism installs the nut. The nut installation and testing equipment achieves automatic feeding through the workpiece feeding device and the nut feeding mechanism, and automatic nut installation through the installation mechanism, effectively improving its installation efficiency and reducing the workload of workers.

[0008] Furthermore, the workpiece transfer and loading device includes a workpiece transfer device and a rotating device for flipping the workpiece. The rotating device is located on one side of the workpiece transfer device and cooperates with the second turntable mechanism. The workpiece transfer device transfers the workpiece from the loading turntable to the rotating device, and the rotating device rotates the product to adjust its orientation before placing it on the corresponding placement fixture, achieving automatic loading and flipping, facilitating subsequent nut installation.

[0009] Preferably, the outer side of the second turntable mechanism is provided with a nut feeding mechanism, which includes a vibratory feeder. The output end of the vibratory feeder is provided with a direct vibration conveying mechanism, and the discharge end of the direct vibration conveying mechanism is provided with a nut feeding mechanism. A nut transfer mechanism is provided on one side of the nut feeding mechanism. The nut feeding mechanism and the nut transfer mechanism realize automatic nut feeding, further improving its feeding efficiency and reducing the workload of workers.

[0010] Furthermore, the bending equipment includes a bending mounting base, a bending top frame, a drive frame, and a drive cylinder. The bending top frame is positioned above the bending mounting base, and the drive frame is positioned between the bending mounting base and the bending top frame, connected by a set of guide column assemblies. The drive cylinder is mounted on the bending top frame, and its output end is connected to the drive frame. The bending mounting base is provided with a lower bending die, which has a bending cavity. Below the drive frame is a higher bending die, which has a bending upper cavity at its lower part. The lower bending die and the upper bending die cooperate with each other.

[0011] Preferably, the testing equipment includes a testing frame, a turntable device is provided on the testing frame, a tooling assembly for placing products is provided on the turntable device, and at least one testing station is provided outside the turntable device, the testing station cooperating with the turntable device.

[0012] More preferably, the inspection station includes a first inspection device for detecting the presence of a product, a second inspection device for detecting the concentricity of the nut, a third inspection device for detecting the presence of foreign objects inside the stud hole, a fourth inspection device for resistance testing, a fifth inspection device for detecting the width of the workpiece, a sixth inspection device for detecting the stud height on the workpiece and the bending degree at the workpiece bend, a seventh inspection device for detecting the thread of the nut, and an eighth inspection device for detecting the current. The first, second, third, fourth, fifth, sixth, and seventh inspection devices are all mounted on a frame and located at their respective inspection stations on the turntable device. Integrating all the inspection devices onto a single machine reduces the time spent transferring workpieces between individual inspection devices during the inspection stage, effectively improving inspection efficiency.

[0013] In addition, the tooling assembly includes a first placement block and a second placement block, which are disposed on the worktable of the inspection frame and both cooperate with the workpiece. The first placement block is provided with a limiting groove, and a through groove is provided on one side of the limiting groove. A first limiting block is provided in the limiting groove, and a mounting hole is provided on the first limiting block. A spring is provided in the mounting hole, and the other end of the spring is connected to the inner wall of the first placement block. A second limiting block is provided in the through groove. The inner wall of the limiting groove and the first limiting block are provided with arc-shaped grooves, which cooperate with the nut. The first and second limiting blocks provide clamp-like positioning for the nut, and the spring in the first limiting block allows it to adjust its position according to the size of the nut.

[0014] As can be seen from the above technical solution, the present invention has the following beneficial effects: 1. The nut installation, bending and inspection equipment described in this invention uses a workpiece feeding device to feed workpieces, and the nut installation and inspection equipment realizes automatic feeding, installation and parallelism inspection of nuts. After the qualified products are bent by the bending device, they are then centrally inspected by the inspection equipment. This automates the feeding, nut installation and inspection, bending and inspection processes, shortens the transfer time between the original scattered equipment, and effectively improves the processing and inspection efficiency.

[0015] 2. Nut installation and inspection equipment automatically feeds workpieces through workpiece feeding equipment, and then transfers the inspected and qualified workpieces from the workpiece feeding equipment to the nut installation equipment through workpiece transfer feeding device, so that the nuts are automatically installed. This automates workpiece feeding and nut installation, effectively improving feeding and installation efficiency, reducing the workload of workers, and better meeting production needs.

[0016] 3. The present invention optimizes the structure of the tooling placement. The adjustable positioning mechanism not only positions the product and improves the stability of its detection, but also effectively improves the applicability of the product.

[0017] 4. The workpiece transfer device transfers the workpiece from the feeding turntable to the rotating device. The rotating device rotates the product and adjusts its orientation before placing it on the corresponding placement fixture, thus achieving automatic feeding and flipping, which facilitates subsequent nut installation.

[0018] 5. The rotating device, the clamping mechanism clamps the workpiece transferred from the workpiece transfer device, the rotating drive cylinder drives the drive arm to rotate the clamping mechanism and the workpiece, and rotates it onto the placement fixture on the nut mounting device, thereby flipping the workpiece.

[0019] 6. Testing equipment: By testing different data of products at the testing station according to production needs, the time for workpieces to be transferred between various independent testing devices during the testing stage is reduced, effectively improving the testing efficiency.

[0020] 7. The first and second limiting blocks in the tooling assembly provide clamp-type positioning for the nut. The spring in the first limiting block allows it to adjust its position according to the size of the product nut.

[0021] 8. In the inspection station described in this invention, the first inspection device detects whether there is a product on the tooling and the position of the product, and pushes the product to the appropriate position through the pusher device. The second inspection device detects the concentricity of the nut. The third inspection device detects whether there are foreign objects in the stud hole. The fourth inspection device tests the resistance of the product. The fifth inspection device detects the width of the workpiece. The sixth inspection device detects the height of the stud on the workpiece and the bending degree at the bend of the workpiece. The seventh inspection device detects the current of the product. By integrating many inspection devices into the same equipment, the product inspection efficiency is effectively improved, the time for workpieces to be turned over in the later inspection stage is reduced, and the product production cycle is shortened. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the nut installation, bending, and testing equipment described in this invention; Figure 2 This is a schematic diagram of the workpiece feeding device and the nut installation and testing device in this invention; Figure 3 This is a schematic diagram of the workpiece feeding device in this invention; Figure 4 This is a schematic diagram of the workpiece feeding device from another perspective in this invention; Figure 5 This is a schematic diagram of the structure of the first placement fixture in this invention; Figure 6 This is a schematic diagram of the structure of the workpiece placed in the first placement fixture in this invention; Figure 7 This is a front view of the positioning mechanism in this invention; Figure 8 This is an internal cross-sectional view of the positioning mechanism in this invention; Figure 9 This is a schematic diagram of the nut installation device in this invention; Figure 10 This is a schematic diagram of the nut mounting device from another perspective in this invention; Figure 11 This is a schematic diagram of the workpiece transfer and loading device in this invention; Figure 12This is a schematic diagram of the rotating device in this invention; Figure 13 This is a schematic diagram of the nut feeding mechanism in this invention; Figure 14 This is a schematic diagram of the tooling structure in this invention; Figure 15 This is a schematic diagram of the workpiece placed in the fixture in this invention; Figure 16 This is a partial schematic diagram of the bending equipment in this invention; Figure 17 This is a top view of the integrated testing device for busbar testing in this invention; Figure 18 This is a schematic diagram of the tooling assembly in this invention; Figure 19 This is an internal cross-sectional view of the first placement block in this invention; Figure 20 This is a schematic diagram of the integrated testing device for busbar testing in this invention; Figure 21 This is a partial schematic diagram of the integrated testing device for busbar testing in this invention; Figure 22 In this invention Figure 5 A magnified view of a specific area from a given perspective; Figure 23 This is a partial schematic diagram of the second, third, fourth, and fifth detection devices in this invention; Figure 24 This is a schematic diagram of the structure of the eighth detection device in this invention; Figure 25 This is a schematic diagram of the eighth detection device in this invention from another perspective; Figure 26 This is a schematic diagram of the detection of the upper part of the workpiece in this invention. Detailed Implementation

[0023] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. Example

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] like Figure 1The nut installation, bending, and inspection equipment shown includes: a workpiece feeding device 1, a nut installation and inspection device 2, at least one bending device 3, and an inspection device 4. The workpiece feeding device 1 is located on one side of the nut installation and inspection device 2, and a workpiece transfer and feeding device 23 is provided between the two. The bending device 3 is located on one side of the nut installation and inspection device 2, and a first robot for workpiece transfer is provided between the two. The inspection device 4 is located on one side of the bending device 3, and the workpiece is transferred between the two through a second robot.

[0026] like Figure 2 and Figure 3 The workpiece loading device 1 shown includes a loading frame, on which a turntable mechanism 12 is provided. At least one placement fixture 11 is provided on the turntable of the turntable mechanism 12, and a stud detection mechanism 13 is provided on the outside of the turntable mechanism 12.

[0027] like Figure 5 and Figure 6 The placement fixture 11 shown includes a fixture body 111, on which a product placement area 111 is provided, and a limiting block 113 is provided on the outside of the fixture body 111; it also includes a positioning mechanism 114, which is an adjustable positioning mechanism.

[0028] One preferred embodiment is described in the examples, such as... Figure 7 and Figure 8 The positioning mechanism 114 shown includes a positioning base plate 1141, a slide rail 1142, a positioning mounting base 1143, and a positioning post 1144. The positioning base plate 1141 is connected to the tooling body 111. The slide rail 1142 is disposed on the positioning base plate 1141. The positioning mounting base 1143 is slidably connected to the slide rail 1142 via a slider. The positioning post 1144 is mounted on the positioning mounting base 1143. The positioning mounting base 1143 is provided with a limiting post 11431.

[0029] One preferred embodiment is described in the examples, such as... Figure 2 and Figure 9 The nut installation and testing equipment 2 shown has a second turntable mechanism 21 on its frame, and at least one placement fixture 22 on the second turntable mechanism 21. An installation mechanism 25 for nut assembly is located on the outside of the second turntable mechanism 21. The workpiece transfer and feeding device 23 transfers the workpiece on the workpiece feeding device 1 to the placement fixture 22 of the nut installation equipment 2, and the installation mechanism 25 installs the nut.

[0030] In a preferred embodiment, the workpiece transfer and loading device 23 includes a workpiece transfer device 231 and a rotating device 232 for flipping the workpiece. The rotating device 232 is located on one side of the workpiece transfer device 231 and cooperates with the second turntable mechanism 21.

[0031] One preferred embodiment is described in the examples, such as... Figure 11 The workpiece transfer device 231 shown includes a transfer mounting frame 2311, a transfer sliding module 2312, a lifting module 2313, and at least one transfer mechanism 2314. The transfer sliding module 2312 is mounted on the transfer mounting frame 2311. The lifting module 2313 is movably connected to the transfer sliding module 2312 via a sliding seat. The transfer mechanism 2314 is connected to the output end of the lifting module 2313 via a transfer frame.

[0032] like Figure 11 and Figure 12 The rotating device 232 shown includes a second mounting bracket 2321, on which a rotating drive cylinder 2322 is provided. The output end of the rotating drive cylinder 2322 is connected to a drive arm 2323, and at least one clamping mechanism 2324 is provided at the end of the drive arm 2323 away from the rotating drive cylinder 2322.

[0033] The second mounting bracket 2321 is provided with a set of slide rails, and the mounting plate of the rotary drive cylinder 2322 is slidably connected to the slide rails through a set of sliders; It also includes a lifting drive cylinder 2325, which is mounted on the second mounting bracket 2321 and its output end is connected to the mounting plate of the rotary drive cylinder 2322.

[0034] One preferred embodiment is described in the examples, such as... Figure 13 The second turntable mechanism 21 shown is provided with a nut feeding mechanism 24 for feeding nuts on its outer side. The mechanism includes a vibratory plate 241. The output end of the vibratory plate 241 is provided with a direct vibration conveying mechanism 242. The discharge end of the direct vibration conveying mechanism 242 is provided with a nut feeding mechanism 243. A nut transfer mechanism 244 is provided on one side of the nut feeding mechanism 243.

[0035] The nut feeding mechanism 243 includes a feeding mounting frame 2431. A feeding drive cylinder 2432 is provided on the feeding mounting frame 2431 on the side of the discharge port of the direct vibration conveying mechanism 242. A drive frame is provided at the output end of the feeding drive cylinder 2432. A feeding component 2433 is provided on the drive frame.

[0036] More preferably, such as Figure 10The mounting mechanism 25 shown includes a mounting frame 251, on which a riveting drive module 252 is mounted. The output end of the riveting drive module 252 is equipped with a riveting assembly 253. The riveting drive module 252 uses a drive cylinder, which is mounted on the mounting frame 251. Its output end is connected to the riveting assembly 253. A set of guide rods is located on both sides of the drive cylinder on the mounting frame 251, and the mounting bracket of the riveting assembly 253 is connected to the guide rods. A support assembly 26 for supporting and placing the tooling 22 is provided at the riveting station on the frame. It also includes a detection mechanism 27 for detecting parallelism, which is located at the detection station on the worktable. The detection mechanism 27 allows the nut to be rotated to the detection station via a turntable after installation. The parallelism between the upper surface of the nut and the upper surface of the workpiece can be detected by the detection mechanism. Figure 25 As shown, integrating inspection and installation into one device can not only effectively prevent defective products from flowing into subsequent processes, but also reduce the time that workpieces spend in various devices, allowing them to better meet production needs and shorten their processing cycle.

[0037] One preferred embodiment is described in the examples, such as... Figure 7 , 8 The diagram also includes a limiting mechanism 14 for limiting the position of the stud, which is located on the outside of the turntable mechanism 11 and cooperates with the stud detection mechanism 13.

[0038] The limiting mechanism 14 includes a limiting mounting frame 141, on which a telescopic drive module 142 is provided. The output end of the telescopic drive module 142 is provided with a mounting plate 143, and the mounting plate 143 is provided with a clamping mechanism 144. The telescopic drive module 142 is driven by a cylinder; however, it can also be adjusted according to actual production needs.

[0039] The stud detection mechanism 13 includes a detection mounting frame 131, on which a primary lifting module 132 is provided. The output end of the primary lifting module 132 is provided with a drive plate 133, and a detection component 134 is installed on the drive plate 133.

[0040] The clamping mechanism 144 includes a clamping drive cylinder 1441 and a set of clamping members 1442. The clamping drive cylinder 1441 is mounted on the mounting plate 143. The clamping members 1442 are arranged opposite to each other and are connected to the output end of the clamping drive cylinder 1441.

[0041] It also includes a detection mechanism 15 for detecting whether there is a product on the first placement fixture 11, the detection mechanism 15 being located on the feeding side.

[0042] like Figure 16The bending device 3 shown includes a bending mounting base 31, a bending top frame 32, a drive frame 33, and a drive cylinder 34. The bending top frame 32 is located above the bending mounting base 31. The drive frame 33 is located between the bending mounting base 31 and the bending top frame 32 and is connected by a set of guide column assemblies. The drive cylinder 34 is mounted on the bending top frame 32, and its output end is connected to the drive frame 33. The bending mounting base 31 is provided with a lower bending die 311, and the lower bending die 311 is provided with a bending cavity 312. The drive frame 33 is provided below the upper bending die 331, and the lower part of the upper bending die 331 is provided with an upper bending cavity 332. The lower bending die 311 and the upper bending die 331 cooperate with each other.

[0043] As shown in the figure, the testing equipment 4 includes a testing frame, a turntable device 41 is provided on the testing frame, a tooling assembly 42 for placing products is provided on the turntable device 41, and at least one testing station is provided on the outside of the turntable device 41, the testing station cooperating with the turntable device 41.

[0044] It also includes a feeding device 44, and the first detection device 43 and the feeding device 44 are mounted on the detection frame 4.

[0045] In a preferred embodiment, the pushing device 44 includes a pushing mounting frame 441, on which a pushing drive cylinder 442 is mounted. The output end of the pushing drive cylinder 442 is provided with a pushing component 443. A reference block is provided on the side of the second placement block 422 away from the pushing device 44. During operation, the pushing device 44 pushes the workpiece to one side, and stops once one side contacts the reference block.

[0046] like Figure 17 , 20The inspection station shown includes a first inspection device 43 for detecting the presence of a product, a second inspection device 45 for detecting the concentricity of the nut, a third inspection device 46 for detecting foreign objects inside the stud hole, a fourth inspection device 47 for resistance testing, a fifth inspection device 48 for detecting the width of the workpiece, a sixth inspection device 49 for detecting the stud height and bending degree of the workpiece, a seventh inspection device 5 for detecting the thread of the nut, and an eighth inspection device 6 for detecting the current. The first inspection device 43, second inspection device 45, third inspection device 46, fourth inspection device 47, fifth inspection device 48, sixth inspection device 49, seventh inspection device 5, and eighth inspection device 6 are all mounted on a frame and located at the corresponding inspection station of the turntable device 41. It should be noted that the range of acceptable product indicators for parallelism, concentricity of the nut and nut mounting hole, bending degree, resistance, and current testing described in this embodiment has been entered into the equipment's storage database before operation. This data serves as the basis for judging good and bad products. The values ​​obtained after testing by each inspection device are compared with the data in the database; products exceeding the range are considered bad products.

[0047] The second testing device 45 includes a first testing mounting frame 451 and a second testing mechanism 452. The first testing mounting frame 451 is mounted on a testing frame, and the second testing mechanism 452 is connected to the first testing mounting frame 451 via a connector. It tests the concentricity of the center position of the nut with the mounting hole on the workpiece used to install the nut.

[0048] The third detection device 46 includes a third detection mounting frame 461, on which a first lifting drive module 462 is provided. The output end of the first lifting drive module 462 is provided with an adapter frame, and the adapter frame is provided with a third detection mechanism 463 for detecting whether there are foreign objects in the inner hole of the stud.

[0049] The fourth detection device 47 includes a fourth detection mounting frame 471, on which a second lifting drive module 472 is mounted. The output end of the second lifting drive module 472 is equipped with a mounting bracket, and the mounting bracket is equipped with a fourth detection mechanism 473 for testing resistance. The lifting drive module 472 employs a lifting drive cylinder, and the mounting bracket is located at its output end. The fourth detection mechanism 473 is equipped with at least one probe for detecting resistance. The second lifting drive module 472 drives the probe on the fourth detection mechanism 473 to a designated position to perform resistance detection on the workpiece.

[0050] The fifth detection device 48 includes a fifth detection mounting frame 481, which is mounted on a detection frame, and a fifth detection mechanism 482 is provided on the fifth detection mounting frame 481. The fifth detection mechanism 482 is used to detect the width of the workpiece. It should be noted that the detection module of the fifth detection mechanism 482 can cover the width of the workpiece.

[0051] The sixth detection device 49 includes an adjustment module and a sixth detection mechanism 491. The adjustment module includes a horizontal adjustment module 492 and a vertical adjustment module 493. The horizontal adjustment module 492 is mounted on the detection frame, and the vertical adjustment module 493 is movably connected to the horizontal adjustment module 492. The sixth detection mechanism 491 is connected to the drive frame at the output end of the vertical adjustment module 493 via an adapter frame. The horizontal adjustment module 492 and the vertical adjustment module 493 drive the sixth detection mechanism 491 to move horizontally and vertically. Figure 26 As shown, during operation, the sixth inspection mechanism 491 inspects the bending angle at the workpiece's bend. During the inspection process, the horizontal adjustment module 492 moves the longitudinal adjustment module 493 and the sixth inspection mechanism 491 to the bend location as needed. Figure 10 The bending angle is detected at points R1 and R2. When the height of the stud on the workpiece needs to be detected, the horizontal adjustment module 492 first drives the vertical adjustment module 493 and the sixth detection mechanism 491 to move to the position to be detected. The vertical adjustment module 493 drives the sixth detection mechanism 491 to rise and detect the height of the workpiece. It should be noted that the detection sequence can be adjusted according to the actual needs of production.

[0052] It also includes a seventh detection device 5 for detecting the threads of nuts. The seventh detection device 5 includes a seventh detection mounting frame 51, a seventh detection mechanism 52, and a lifting drive cylinder 53. The seventh detection mounting frame 51 is mounted on a detection frame and has a set of slide rails. The seventh detection mechanism 52 is mounted on a mounting bracket 54. The mounting bracket 53 is slidably connected to the slide rails via a sliding block. The lifting drive cylinder 53 is mounted on the seventh detection mounting bracket 51, and its output end is connected to the mounting bracket 54. The seventh detection mechanism 52 can be used to detect whether the nut has stripped threads.

[0053] In a preferred embodiment, the system further includes an eighth detection device 6 for detecting workpiece current and a robot 7. The eighth detection device 6 includes an eighth detection mounting frame 61, on which a first horizontal drive cylinder 62 is mounted. The output end of the first horizontal drive cylinder 62 is provided with a mounting component 63. The mounting component 63 is provided with an eighth detection mechanism 64 for detecting current. A second drive cylinder 65 is located on one side of the mounting component 63. The output end of the second drive cylinder 65 is provided with a second mounting frame 66. The second mounting frame 66 is provided with a lifting drive cylinder 67. The output end of the lifting drive cylinder 67 is provided with a third mounting frame 68. The third mounting frame 68 is provided with an eighth detection mechanism 69 for detecting current. During operation, the first horizontal drive cylinder 62 drives the mounting component 63 to move the eighth detection mechanism 64 to a designated position for current detection. After the second drive cylinder 65 drives the second mounting frame 66 to move the lifting drive cylinder 67, the third mounting frame 68, and the eighth detection mechanism 69 to the designated position, the lifting drive cylinder 67 drives the third mounting frame 68 to move the eighth detection mechanism 69 down to the designated position for current detection.

[0054] The tooling assembly 42 includes a first placement block 421 and a second placement block 422. The first placement block 421 and the second placement block 422 are disposed on the worktable of the inspection frame, and both are in contact with the workpiece. The first placement block 421 is provided with a limiting groove, and a through groove is provided on one side of the limiting groove. A first limiting block 4211 is provided in the limiting groove, and a mounting hole is provided on the first limiting block 4211. A spring 42111 is provided in the mounting hole, and the other end of the spring 42111 is connected to the inner wall of the first placement block 421. A second limiting block 4212 is provided in the through groove. The inner wall of the limiting groove and the first limiting block 4211 are provided with arc-shaped grooves, which cooperate with the nut. The turntable shown is also provided with a positioning mechanism 4201 on one side of the tooling assembly 42. The positioning mechanism 4201 includes a positioning cylinder, and the output end of the positioning cylinder is provided with a positioning element.

[0055] The working method of the nut installation, bending and testing equipment is as follows: The workpiece is placed on the fixture 11 and positioned by the positioning mechanism 114. The turntable mechanism 12 drives the fixture 11 and the workpiece on it to rotate and move to the inspection station. The stud inspection mechanism 13 inspects the studs on the workpiece. If the inspection fails, the workpiece is removed and placed in the defective product area. After the workpiece passes inspection, the transfer sliding module 2312 drives the lifting module 2313 to move the transfer mechanism 2314 to the designated position. The lifting module 2313 drives the transfer mechanism 2314 to descend to the appropriate position. The workpiece is clamped by the transfer mechanism 2314. After the transfer mechanism 2314 clamps the workpiece, the lifting module 2313 drives the transfer mechanism 2314 and the clamped workpiece to rise until the workpiece is removed from the placement fixture. The transfer sliding module 2312 drives the lifting module 2313, the transfer mechanism 2314, and the clamped workpiece to move towards the rotating device 232. The workpiece is placed on the clamping mechanism 2324 of the rotating device 232 and clamped by the clamping mechanism 2324. During operation, according to the position of the fixture 22 on the turntable, the lifting drive cylinder 2325 drives the drive arm 2323 to drive the clamping mechanism 2324 to rotate 180°, flipping the workpiece and turning it onto the fixture 22 of the second turntable mechanism 21. The clamping mechanism 2324 opens, allowing the workpiece to be placed on the fixture 22. The inspection agency checks whether there is a product on the fixture 22 and whether the product has any protrusions. If the inspection is qualified, the second turntable mechanism 21 will rotate the workpiece to the nut loading station. The vibratory feeder 241 in the nut feeding mechanism 24 vibrates to transport the nut to the direct vibration conveyor 242. The direct vibration conveyor 242 then transports the nut to the feeding mounting frame of the nut feeding mechanism 243. The feeding drive cylinder 2432 drives the feeding component 2433 to push the nut forward. After reaching the designated position, the lifting drive cylinder in the nut transfer mechanism 244 drives the transfer clamping mechanism to move downward to clamp the nut. The lifting drive cylinder drives the transfer clamping mechanism and the clamped nut to move upward. Then, the horizontal moving module drives the lifting drive cylinder, the transfer clamping mechanism, and the clamped nut to move above the nut to be installed on the workpiece. The lifting drive cylinder drives the transfer clamping mechanism and the clamped nut to move downward to place the nut in the installation position of the workpiece. The second turntable mechanism 21 rotates the workpiece with the nut to the riveting station. The riveting drive module 252 in the installation mechanism 25 drives the riveting assembly 253 to move downward. After the support assembly 26 supports the fixture from the bottom, the riveting drive module 252 drives the riveting assembly 253 to continue to move downward to rivet the nut. The second turntable mechanism 21 rotates the installed workpiece to the inspection station, and the inspection mechanism 27 inspects the parallelism between the upper surface of the nut and the upper surface of the workpiece. Figure 26 As shown; The robot picks up the qualified products and transfers them to the bending equipment 3 for bending. The robot transfers the bent workpiece to the tooling assembly 42. The pushing device 44 pushes the workpiece toward the reference block. After it contacts the reference block, the nut is placed in the arc-shaped groove between the inner wall of the limiting groove and the first limiting block 4211 to limit it. The positioning mechanism 4201 presses the workpiece from above. The drive mechanism in the turntable device 41 drives the turntable to rotate the workpieces sequentially to the corresponding inspection stations. The second inspection device 45 checks the concentricity of the nut and the mounting hole on the workpiece. If the concentricity fails, the product is moved to the defective product area. If the product passes, the turntable rotates to the third inspection station, where the third inspection device 46 checks for foreign objects inside the stud hole. If foreign objects are found, the workpiece is removed, placed in the defective area, the hole is cleaned, and then re-inspected. The turntable then rotates the workpiece without foreign objects to the next inspection station, where the fourth inspection device 47 checks the workpiece... The resistance of the workpiece is tested, and then it moves to the fifth testing station. The width of the workpiece is tested by the fifth testing device 48. The qualified workpiece continues to rotate to the sixth testing station driven by the turntable. The width, bending degree and height of the workpiece are tested by the sixth testing device 49. The qualified workpiece continues to rotate to the seventh testing station driven by the turntable. The seventh testing device 5 checks whether the nut has stripped threads. The qualified workpiece will continue to rotate by the turntable and move to the eighth testing station. The current of the workpiece is tested by the eighth testing device 6. The good workpiece after testing is picked up by the robot 7 and moved to the good workpiece conveyor belt. Defective workpieces are placed in the defective workpiece area.

[0056] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. A nut installation, bending, and testing device, characterized in that: include: The equipment includes a workpiece loading device (1), a nut installation and inspection device (2), at least one bending device (3) and an inspection device (4). The workpiece loading device (1) is located on one side of the nut installation and inspection device (2), and a workpiece transfer and loading device (23) is provided between the two. The bending device (3) is located on one side of the nut installation and inspection device (2), and a first robot for workpiece transfer is provided between the two. The inspection device (4) is located on one side of the bending device (3), and the workpiece is transferred between the two through a second robot.

2. The nut installation, bending, and testing equipment according to claim 1, characterized in that: The workpiece loading equipment (1) includes a loading frame, on which a turntable mechanism (12) is provided. At least one placement fixture (11) is provided on the turntable of the turntable mechanism (12), and a stud detection mechanism (13) is provided on the outside of the turntable mechanism (12).

3. The nut installation, bending, and testing equipment according to claim 1, characterized in that: The placement fixture (11) includes a fixture body (111), a product placement area (111) is provided on the fixture body (111), and a limiting block (113) is provided on the outside of the fixture body (111). It also includes a positioning mechanism (114), which is an adjustable positioning mechanism.

4. The nut installation, bending, and testing equipment according to claim 1, characterized in that: The frame of the nut installation and testing equipment (2) is provided with a second turntable mechanism (21), and the second turntable mechanism (21) is provided with at least one placement fixture (22); an installation mechanism (25) for nut assembly is provided on the outside of the second turntable mechanism (21), the workpiece transfer and feeding device (23) transfers the workpiece on the workpiece feeding device (1) to the placement fixture (22) of the nut installation equipment (2), and the installation mechanism (25) installs the nut.

5. The nut installation, bending, and testing equipment according to claim 1, characterized in that: The workpiece transfer and loading device (23) includes a workpiece transfer device (231) and a rotating device (232) for flipping the workpiece. The rotating device (232) is located on one side of the workpiece transfer device (231) and cooperates with the second turntable mechanism (21).

6. The nut installation, bending, and testing equipment according to claim 1, characterized in that: The second turntable mechanism (21) is provided with a nut feeding mechanism (24) for feeding nuts on its outer side. The turntable mechanism includes a vibratory plate (241). The output end of the vibratory plate (241) is provided with a direct vibration conveying mechanism (242). The discharge end of the direct vibration conveying mechanism (242) is provided with a nut feeding mechanism (243). A nut transfer mechanism (244) is provided on one side of the nut feeding mechanism (243).

7. The nut installation, bending, and testing equipment according to claim 1, characterized in that: The bending device (3) includes a bending mounting base (31), a bending top frame (32), a drive frame (33), and a drive cylinder (34). The bending top frame (32) is located above the bending mounting base (31). The drive frame (33) is located between the bending mounting base (31) and the bending top frame (32) and is connected by a set of guide column assemblies. The drive cylinder (34) is mounted on the bending top frame (32) and its output end is connected to the drive frame (33). The bending mounting base (31) is provided with a lower bending die (311) and a bending cavity (312). The drive frame (33) is provided with an upper bending die (331) below it. The lower part of the upper bending die (331) is provided with an upper bending cavity (332). The lower bending die (311) and the upper bending die (331) cooperate with each other.

8. The nut installation, bending, and testing equipment according to claim 1, characterized in that: The testing equipment (4) includes a testing frame, on which a turntable device (41) is provided. The turntable device (41) is provided with a tooling assembly (42) for placing products, and at least one testing station is provided outside the turntable device (41), which cooperates with the turntable device (41).

9. The nut installation, bending, and testing equipment according to claim 8, characterized in that: The inspection station includes a first inspection device (43) for detecting whether there is a product, a second inspection device (45) for detecting the concentricity of the nut, a third inspection device (46) for detecting whether there are foreign objects in the inner hole of the stud, a fourth inspection device (47) for resistance testing, a fifth inspection device (48) for detecting the width of the workpiece, a sixth inspection device (49) for detecting the height of the stud on the workpiece and the bending degree at the bend of the workpiece, a seventh inspection device (5) for detecting the thread of the nut, and an eighth inspection device (6) for detecting the current. The first inspection device (43), the second inspection device (45), the third inspection device (46), the fourth inspection device (47), the fifth inspection device (48), the sixth inspection device (49), the seventh inspection device (5), and the eighth inspection device (6) are all mounted on the frame and are mounted on the corresponding inspection station of the turntable device (41).

10. The nut installation, bending, and testing equipment according to claim 8, characterized in that: The tooling assembly (42) includes a first placement block (421) and a second placement block (422). The first placement block (421) and the second placement block (422) are disposed on the worktable of the inspection frame, and both are engaged with the workpiece. The first placement block (421) is provided with a limiting groove, and a through groove is provided on one side of the limiting groove. A first limiting block (4211) is provided in the limiting groove. The first limiting block (4211) is provided with a mounting hole. A spring (42111) is provided in the mounting hole. The other end of the spring (42111) is connected to the inner wall of the first placement block (421). A second limiting block (4212) is provided in the through groove. The inner wall of the limiting groove and the first limiting block (4211) are provided with arc-shaped grooves, which are matched with the nut.

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