Single-sided connecting bolt automatic assembling machine

Abstract

The utility model provides a kind of single-sided connecting bolt automatic assembly machine, it includes: rotary disc, first feeding station, second feeding station and screwing station are separately provided along the circumferential direction of rotary disc, positioning hole groove that can be sequentially rotated to first feeding station, second feeding station and screwing station are equipped on rotary disc;First feeding unit has nut vibration feeding disc, the discharge port of nut vibration feeding disc is connected with first feeding station by first sliding clamping device;Second feeding unit has multiple vibration feeding discs, the discharge port of each vibration feeding disc is connected with second feeding station by first rotating clamping device;Discharging unit has discharging platform, and discharging platform is connected with screwing station by second rotating clamping device.The utility model can complete the automatic feeding and assembly of core rod, nail body, nut, nail cover and ring, improve the reliability, stability, consistency of single-sided connecting bolt assembly quality, improve assembly efficiency and save manpower simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of automated production equipment technology, and in particular to an automatic assembly machine for single-sided connecting bolts. Background Technology

[0002] Single-sided connecting bolts are suitable for installing composite materials in closed aircraft structures. They possess the same shear strength as traditional bolts, while also exhibiting the same tensile fatigue resistance, clamping force, anti-loosening and vibration resistance, and lightning protection properties as shear-resistant high-strength bolts / nuts (105 combination). They feature large diameters, high strength, and excellent fatigue performance, allowing for single-sided installation like ordinary blind rivets (smooth cross-section, no grinding required). They are suitable for high shear load areas and have a wider application range within the same interlayer length compared to high-strength bolts. The maximum allowable tilt angle on the structural surface is 7°. Currently, single-sided connecting bolts are widely used in various advanced aircraft, primarily for connections between main load-bearing components such as fuselage and wing joints.

[0003] like Figure 1 As shown, the single-sided connecting bolt 100 consists of a core rod 101, a bolt body 102, a nut 105, a bolt sleeve 104, and a ring 103. The assembly sequence and direction are as follows: Figure 2 As shown.

[0004] The current assembly process requirements for single-sided connecting bolts (100mm) are as follows:

[0005] 1. Use specialized tooling equipment to press the nut 105 into a notch, and then package the pressed nut 105 for later use;

[0006] 2. Use special equipment to machine the neck groove of the core rod 101, and package the core rod 101 with the neck groove machined for later use.

[0007] 3. Insert the core rod 101 into the nail body 102, and the countersunk head of the core rod 101 is embedded in the countersunk hole inside the nail body 102;

[0008] 4. Install the polyoxymethylene ring 103 onto the core rod 101;

[0009] 5. Install the nail sleeve 104 (with the stepped hole end) onto the core rod 101. It is strictly forbidden to install it in the opposite direction.

[0010] 6. Screw the nut 105 onto the core rod 101. After the nut 105 and the nail sleeve 104 are concentric and the teeth are engaged, continue to tighten. It is strictly forbidden to install in the opposite direction.

[0011] 7. Tighten the tightened components on the nut 105 tightening machine according to the torque value of the corresponding specification. The expansion diameter of the nail sleeve 104 should not exceed the maximum diameter of the nail body 102.

[0012] The shortcomings and deficiencies of existing technologies:

[0013] The current assembly process has specific requirements for the order of parts installation. Currently, the installation process involves a significant amount of manual work. The POM ring 103 must be installed onto the core rod 101 before the nail sleeve 104 can be installed. This makes it easy to miss installing the ring 103, which is difficult to detect after installation. The nut 105 has a specific orientation requirement; its toothed end must engage with the toothed end of the nail sleeve 104 before tightening. It is easy to install the nut 105 in the wrong direction. Any product with a missing ring 103 or a reversed nut 105 will result in riveting failure during use. When the nail sleeve 104 is screwed onto the cone angle of the nail body 102, the manual screwing operation is inefficient, and the screwing position cannot be accurately controlled. This can cause the cone angle of the nail body 102 to penetrate the nail sleeve 104 too deeply, resulting in the nail sleeve 104 bulging and exceeding the product diameter tolerance. This diameter deviation will prevent the single-sided connecting bolt 100 from entering the mounting hole 205 during installation. The closing and pressing processes lack pressure control, and the determination of closing and pressing results mainly relies on subsequent measurements and inspections, which is a post-event inspection and passive testing, resulting in a high risk of assembly errors. Furthermore, each step of a complete assembly process requires multiple operators, consuming a large amount of manpower and resulting in low assembly efficiency. Utility Model Content

[0014] The purpose of this invention is to provide an automatic assembly machine for single-sided connecting bolts, which can automatically feed and assemble core rods, bolt bodies, nuts, bolt sleeves, and rings, thereby improving the reliability, stability, and consistency of single-sided connecting bolt assembly quality, while also increasing assembly efficiency and saving manpower.

[0015] The above-mentioned technical objectives of this utility model are mainly achieved through the following technical solutions:

[0016] This utility model provides an automatic assembly machine for single-sided connecting bolts, used for feeding and assembling single-sided connecting bolts including a core rod, bolt body, ring, bolt sleeve, and nut. The automatic assembly machine for single-sided connecting bolts includes:

[0017] A rotating disk is provided with a first feeding station, a second feeding station and a turning station at intervals along the circumferential direction of the rotating disk. The rotating disk is provided with positioning holes and slots that can be rotated sequentially to the first feeding station, the second feeding station and the turning station.

[0018] The first feeding unit has a nut vibrating feeding plate. The discharge port of the nut vibrating feeding plate is connected to the first feeding station through a first sliding clamping device to transfer the nut in the nut vibrating feeding plate to the positioning hole groove.

[0019] The second feeding unit has a nail sleeve vibrating feeding plate, a ring vibrating feeding plate, a nail body vibrating feeding plate and a core rod vibrating feeding plate. The discharge port of each vibrating feeding plate of the second feeding unit is connected to the second feeding station through a first rotating clamping device so as to sequentially transfer the nail sleeve, the ring, the nail body and the core rod in each vibrating feeding plate of the second feeding unit into the positioning hole groove.

[0020] The unloading unit has an unloading platform, which is connected to the screwing station via a second rotating clamping device to transfer the assembled single-sided connecting bolt from the positioning hole slot to the unloading platform.

[0021] In a preferred embodiment of this utility model, the ends of the axially mating nail sleeve and the nut are both toothed ends with mating teeth, and the end of the nail sleeve away from the nut is provided with a stepped hole for installing the ring.

[0022] The nut vibrating feeder has a nut discharge track at its outlet, and the nut discharge track is provided with a first identification device for identifying the orientation of the toothed end of the nut; and / or, the sleeving vibrating feeder has a sleeving discharge track at its outlet, and the sleeving discharge track is provided with a second identification device for identifying the orientation of the end of the sleeving with the stepped hole.

[0023] In a preferred embodiment of the present invention, the screwing station includes a pre-tightening station and a final tightening station, one end of the second rotating clamping device is opposite to the final tightening station, and the positioning hole groove on the rotating disk can be rotated sequentially to the first loading station, the second loading station, the pre-tightening station, and the final tightening station.

[0024] The pre-tightening station is equipped with a pre-tightening device, and the final tightening station is equipped with a final tightening device.

[0025] In a preferred embodiment of the present invention, the first sliding clamping device has a first servo slide and a first gripper for gripping the nut. The first gripper is slidably disposed on the first servo slide, and the two ends of the first servo slide are respectively located at the outlet of the nut vibrating feeding plate and the first feeding station.

[0026] In a preferred embodiment of the present invention, the first rotating clamping device is a first manipulator with multiple degrees of freedom. The end of the first manipulator has a second gripper for gripping the nail sleeve, the nail body and the core rod and a suction cup for absorbing the ring.

[0027] In a preferred embodiment of the present invention, the suction cup has a suction head that can be inserted into the ring. An adsorption channel is provided in the suction cup. One end of the adsorption channel is connected to a vacuum source through a pipe. The other end of the adsorption channel extends into the suction head and penetrates the side wall of the suction head so as to be opposite to the inner side wall of the ring.

[0028] In a preferred embodiment of the present invention, the rotating disk has a plurality of mounting holes spaced apart along its circumferential direction, and a positioning sleeve is installed in each mounting hole, and the positioning sleeve forms the positioning hole groove.

[0029] In a preferred embodiment of this utility model, a nut pressing device is provided on the unloading platform, and the second rotating clamping device is located between the nut pressing device and the final tightening station to transfer the assembled single-sided connecting bolt from the final tightening station to the nut pressing device.

[0030] In a preferred embodiment of the present invention, the unloading platform is further provided with a detection device, and a second sliding clamping device is provided between the detection device and the nut pressing device. The second sliding clamping device has a second servo slide and a third jaw for clamping the single-sided connecting bolt. The third jaw is slidably disposed on the second servo slide, and the two ends of the second servo slide are respectively located at the nut pressing device and the detection device.

[0031] In a preferred embodiment of the present invention, the unloading unit further includes a hopper, and a third rotating clamping unit for clamping the single-sided connecting bolt is provided between the unloading platform and the hopper.

[0032] Compared with the prior art, the technical solution of this utility model has the following features and advantages:

[0033] The single-sided connecting bolt automatic assembly machine of this utility model can realize automatic feeding and assembly of parts, and the whole process is fully automated; it saves manpower, is highly efficient, has a low error rate, and is reliable in quality. Moreover, the reliability, stability and consistency of the assembly quality are significantly improved compared with manual assembly.

[0034] The single-sided connecting bolt automatic assembly machine of this utility model can automatically identify the orientation of the nut and the rivet sleeve through an identification device, ensuring the correct assembly of the unit connecting bolts.

[0035] The automatic assembly machine for single-sided connecting bolts described in this utility model can realize automated crimping and assembly inspection, thereby ensuring that the assembled single-sided connecting bolts can quickly enter the hopper, thus improving the efficiency of assembly and processing. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0037] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0038] Figure 1 This is a structural schematic diagram of the single-sided connecting bolt described in this utility model;

[0039] Figure 2 This is an exploded structural diagram of the single-sided connecting bolt of this utility model;

[0040] Figure 3 This is a schematic diagram of the structure of the nut described in this utility model;

[0041] Figure 4 This is a schematic diagram of the structure of the nail sleeve described in this utility model;

[0042] Figure 5 This is a top view of the automatic assembly machine for single-sided connecting bolts described in this utility model.

[0043] Figure 6 This is a schematic diagram of the suction cup described in this utility model;

[0044] Figure 7 This is a schematic diagram of the positioning hole groove on the rotating disk of this utility model.

[0045] Explanation of reference numerals in the attached figures:

[0046] 100. Single-sided connecting bolt; 101. Core rod; 102. Nail body; 103. Ring; 104. Nail sleeve; 105. Nut;

[0047] 200. Rotary disk; 201. First loading station; 202. Second loading station; 203. Pre-tightening station; 204. Final tightening station; 205. Mounting hole; 206. Positioning sleeve; 207. Positioning hole groove; 208. Pre-tightening device; 209. Final tightening device;

[0048] 300. First feeding unit; 301. Nut vibrating feeding plate; 302. Nut discharge track; 303. First identification device; 304. First servo slide; 305. First gripper;

[0049] 400. Second feeding unit; 401. Nail sleeve vibrating feeding plate; 402. Nail sleeve discharge track; 403. Second identification device; 404. Circular vibrating feeding plate; 405. Circular discharge track; 406. Nail body vibrating feeding plate; 407. Nail body discharge track; 408. Core rod vibrating feeding plate; 409. Core rod discharge track; 410. First rotating clamping device; 411. First robotic arm; 412. Suction cup; 413. Suction head; 414. Adsorption channel; 415. Pipe;

[0050] 500. Unloading unit; 501. Unloading platform; 502. Second rotating clamping device; 503. Nut pressing device; 504. Detection device; 505. Second servo slide; 506. Third gripper; 507. Hopper; 508. Third rotating clamping unit. Detailed Implementation

[0051] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0052] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0054] This utility model provides an automatic assembly machine for single-sided connecting bolts, used for feeding and assembling single-sided connecting bolts 100, including a core rod 101, a bolt body 102, a ring 103, a bolt sleeve 104, and a nut 105. Figures 1 to 5 As shown, the automatic assembly machine for single-sided connecting bolts includes a rotary table 200, a first feeding unit 300, a second feeding unit 400, and a discharging unit 500. A first feeding station 201, a second feeding station 202, and a screwing station are provided at intervals along the circumferential direction of the rotating disk 200. The rotating disk 200 is provided with positioning slots 207 that can rotate sequentially to the first feeding station 201, the second feeding station 202, and the screwing station. The first feeding unit 300 has a nut vibrating feeding disk 301. The outlet of the nut vibrating feeding disk 301 is connected to the first feeding station 201 through a first sliding clamping device to transfer the nut 105 in the nut vibrating feeding disk 301 to the positioning slots 207. The second feeding unit 400 has a nail sleeve vibrating feeding disk 401, a ring vibrating feeding disk 404, a nail body vibrating feeding disk 406, and a core rod vibrating feeding disk 408. The outlet of the nail sleeve vibrating feeding disk 401, the ring vibrating feeding disk 404, the ring vibrating feeding disk 406, and the core rod vibrating feeding disk 408 are provided. The discharge ports of the circular vibrating feeding plate 404, the nail body vibrating feeding plate 406, and the core rod vibrating feeding plate 408 are all connected to the second feeding station 202 via the first rotating clamping device 410, so as to sequentially transfer the nail sleeve 104 in the nail sleeve vibrating feeding plate 401, the ring 103 in the circular vibrating feeding plate 404, the nail body 102 in the nail body vibrating feeding plate 406, and the core rod 101 in the core rod vibrating feeding plate 408 of the second feeding unit 400 to the positioning hole slot 207; the unloading unit 500 has an unloading platform 501, which is connected to the screwing station via the second rotating clamping device 502, so as to transfer the assembled single-sided connecting bolt 100 from the positioning hole slot 207 to the unloading platform 501.

[0055] The automatic assembly machine for single-sided connecting bolts described in this utility model can automatically feed and assemble all parts within 100 single-sided connecting bolts. The entire process is fully automated, saving manpower, with high efficiency, low error rate, and reliable quality. Moreover, the reliability, stability, and consistency of the assembly quality are significantly improved compared to manual assembly.

[0056] First, a brief description of the structure of the single-sided connecting bolt 100 involved in this utility model will be given, such as... Figures 1 to 4 As shown, the ends of the axially mating screw sleeve 104 and nut 105 are both toothed ends with mating teeth. The end of the screw sleeve 104 away from the nut 105 has a stepped hole for mounting the ring 103. In the assembled state, as... Figure 1As shown, the toothed ends of the rivet sleeve 104 and the toothed ends of the nut 105 are vertically aligned and coaxially arranged. The ring 103 is placed in the stepped hole at the upper end of the rivet sleeve 104 and is coaxially arranged with the rivet sleeve 104. The rivet body 102 is positioned above the rivet sleeve 104 and is coaxially arranged with the rivet sleeve 104. The tapered portion at the lower end of the rivet body 102 abuts against the ring 103. The threaded end of the core rod 101 passes through the rivet body 102, ring 103, and rivet sleeve 104 sequentially from the upper end of the rivet body 102 downwards and is threadedly connected to the nut 105. The specific usage process of the single-sided connecting bolt 100 will not be described here. Please refer to the usage method disclosed in Chinese invention patent application No. CN112128200A, published on December 25, 2020, entitled "A Single-Sided Connecting Bolt".

[0057] The following will provide a detailed description of the specific structure of each part of the automatic assembly machine for single-sided connecting bolts described in this utility model, as well as the position and connection relationship between each part.

[0058] The automatic assembly machine for single-sided connecting bolts described in this utility model has a rotating disk 200, such as Figure 5 As shown, the rotary disk 200 is the core structure of the entire equipment, and the various devices described below are generally arranged around the rotary disk 200. The rotary disk 200 is a disc that can rotate around its central axis, and is usually arranged in a horizontal direction. Multiple workstations are arranged at intervals along the circumferential direction of the rotary disk 200, and the rotary disk 200 can rotate sequentially to each workstation to perform material loading and assembly at that workstation. It should be noted that each workstation is a fixed position determined by the circumferential angle of the rotary disk 200, rather than a position on the rotary disk 200 that rotates with the rotary disk 200.

[0059] In this embodiment, as Figure 5 As shown, the outer periphery of the rotary disk 200 is provided with a first loading station 201, a second loading station 202, and a tightening station (including a pre-tightening station 203 and a final tightening station 204, which will be described in detail below). At least one positioning slot 207 is provided at the edge of the rotary disk 200, which is used to accommodate the various parts before assembly. When the rotary disk 200 rotates to the first loading station 201, some parts can be loaded into the positioning slot 207. When the rotary disk 200 rotates to the second loading station 202, other parts can be loaded into the positioning slot 207 again. After all parts have been loaded, the rotary disk 200 rotates to the tightening station for assembly.

[0060] The automatic assembly machine for single-sided connecting bolts described in this utility model has a first feeding unit 300, such as... Figure 5As shown, the first feeding unit 300 is located on the outer periphery of the rotary disk 200, and the circumferential position of the first feeding unit 300 corresponds to the position of the first feeding station 201. The first feeding unit 300 can automatically feed the nut 105 at the first feeding station 201.

[0061] Specifically, such as Figure 5 As shown, the first feeding unit 300 has a nut vibrating feeding plate 301, which contains nuts 105. The discharge port of the nut vibrating feeding plate 301 is provided with a nut discharge track 302. The nuts 105 in the nut vibrating feeding plate 301 can enter the nut discharge track 302 one by one through the discharge port. The nut discharge track 302 has a limiting structure, that is, the cross-sectional shape of the nut discharge track 302 is set to match the shape of the nuts 105. Through the limiting effect, the nuts 105 in the track are arranged in a predetermined direction, thereby facilitating the subsequent clamping operation of the nuts 105.

[0062] Furthermore, such as Figure 5 As shown, a first sliding clamping device is provided between the nut discharge track 302 and the first loading station 201. The first sliding clamping device is used to clamp the nut 105 to transfer the nut 105 in the nut discharge track 302 to the positioning hole slot 207 on the rotary disk 200 located at the first loading station 201. The first sliding clamping device has a first servo slide 304 and a first jaw 305 for clamping the nut 105. The first jaw 305 is slidably disposed on the first servo slide 304, and the two ends of the first servo slide 304 are located at the nut discharge track 302 and the first loading station 201, respectively.

[0063] The automatic assembly machine for single-sided connecting bolts described in this utility model also has a second feeding unit 400, such as... Figure 5 As shown, the second feeding unit 400 is located on the outer periphery of the rotary disk 200, and the circumferential position of the second feeding unit 400 corresponds to the position of the second feeding station 202. The second feeding unit 400 can automatically feed the nail sleeve 104, ring 103, nail body 102 and core rod 101 in sequence at the second feeding station 202.

[0064] Specifically, such as Figure 5As shown, the second feeding unit 400 has a nail sleeve vibrating feeding plate 401, which contains nail sleeves 104. The discharge port of the nail sleeve vibrating feeding plate 401 is provided with a nail sleeve discharge track 402. The nail sleeves 104 in the nail sleeve vibrating feeding plate 401 can enter the nail sleeve discharge track 402 one by one through the discharge port. The nail sleeve discharge track 402 has a limiting structure, that is, the cross-sectional shape of the nail sleeve discharge track 402 is set to match the shape of the nail sleeves 104. Through the limiting effect, the nail sleeves 104 in the track are arranged in a predetermined direction, thereby facilitating the subsequent clamping operation of the nail sleeves 104.

[0065] The second feeding unit 400 has a ring vibrating feeding tray 404, which contains rings 103. The discharge port of the ring vibrating feeding tray 404 is provided with a ring discharge track 405. The rings 103 in the ring vibrating feeding tray 404 can enter the ring discharge track 405 one by one through the discharge port. The ring discharge track 405 has a limiting structure, that is, the cross-sectional shape of the ring discharge track 405 is set to match the shape of the rings 103. Through the limiting effect, the rings 103 in the track are arranged in a predetermined direction, thereby facilitating the subsequent clamping operation of the rings 103.

[0066] The second feeding unit 400 has a nail vibrating feeding tray 406, which contains nails 102. The discharge port of the nail vibrating feeding tray 406 is provided with a nail discharge track 407. The nails 102 in the nail vibrating feeding tray 406 can enter the nail discharge track 407 one by one through the discharge port. The nail discharge track 407 has a limiting structure, that is, the cross-sectional shape of the nail discharge track 407 is set to match the shape of the nails 102. Through the limiting effect, the nails 102 in the track are arranged in a predetermined direction, thereby facilitating the subsequent clamping operation of the nails 102.

[0067] The second feeding unit 400 has a core rod vibrating feeding plate 408, which contains core rods 101. The discharge port of the core rod vibrating feeding plate 408 is provided with a core rod discharge track 409. The core rods 101 in the core rod vibrating feeding plate 408 can enter the core rod discharge track 409 one by one through the discharge port. The core rod discharge track 409 has a limiting structure, that is, the cross-sectional shape of the core rod discharge track 409 is set to match the shape of the core rods 101. Through the limiting effect, the core rods 101 in the track are arranged in a predetermined direction, thereby facilitating the subsequent clamping operation of the core rods 101.

[0068] The positions of the nail sleeve vibrating feeding plate 401, the ring vibrating feeding plate 404, the nail body vibrating feeding plate 406, and the core rod vibrating feeding plate 408 in the second feeding unit 400 can be set according to the actual installation space, so as to concentrate the discharge tracks connected to each feeding plate in the same position, thereby facilitating the clamping and transfer of various parts through the first rotating clamping device 410.

[0069] Furthermore, such as Figure 5 As shown, a first rotating clamping device 410 is provided between each discharge track and the second feeding station 202 in the second feeding unit 400. The first rotating clamping device 410 is used to clamp the nail sleeve 104, ring 103, nail body 102 or core rod 101 to transfer them from the discharge track to the positioning hole slot 207 on the rotary disk 200 located at the second feeding station 202. The first rotating clamping device 410 is a first manipulator 411 with multiple degrees of freedom. The end of the first manipulator 411 has a gripper for clamping the nail sleeve 104, ring 103, nail body 102 and core rod 101.

[0070] When the rotary disk 200 is in the second loading station 202 and no loading is being performed, the positioning slot 207 contains the nut 105 that was placed at the first loading station 201. After loading is completed at the second loading station 202, the nut 105, nail sleeve 104, ring 103, nail body 102 and core rod 101 are all in the positioning slot 207. Since the nut 105, nail sleeve 104, ring 103, nail body 102 and core rod 101 are loaded in sequence, the parts in the positioning slot 207 are in a pre-assembled state. Assembly can be achieved by screwing the core rod 101 into the nut 105.

[0071] The automatic assembly machine for single-sided connecting bolts described in this utility model has a feeding unit 500, such as... Figure 5 As shown, the unloading unit 500 is located on the outer periphery of the rotary disk 200, and the circumferential position of the unloading unit 500 corresponds to the position of the screwing station. The unloading unit 500 can automatically unload the single-sided connecting bolt 100 at the screwing station.

[0072] Specifically, such as Figure 5 As shown, the unloading unit 500 has an unloading platform 501. A second rotating clamping device 502 is provided between the screwing station and the unloading platform 501. The second rotating clamping device 502 can also be a multi-degree-of-freedom manipulator, the end of which has a gripper for gripping the single-sided connecting bolt 100. The second rotating clamping device 502 can transfer the assembled single-sided connecting bolt 100 from the positioning hole 207 at the screwing station to the unloading platform 501, thereby realizing the unloading of the single-sided connecting bolt 100.

[0073] The structure and technical effects of the preferred embodiment of the automatic assembly machine for single-sided connecting bolts described in this utility model will be further explained below.

[0074] According to one embodiment of the present invention, such as Figure 5 As shown, the nut discharge track 302 is provided with a first identification device 303 for identifying the orientation of the toothed end of the nut 105, and the nail sleeve discharge track 402 is provided with a second identification device 403 for identifying the orientation of the end of the nail sleeve 104 with the stepped hole.

[0075] Since both the nut 105 and the sleeve 104 are cylindrical structures, they may have two different orientations on their respective discharge tracks. However, the nut 105 and the sleeve 104 have specific orientation requirements during loading and assembly: the toothed end of the nut 105 must face upwards, and the end of the sleeve 104 with the stepped hole must face upwards (the toothed end facing downwards). Therefore, a first identification device 303 is installed on the nut discharge track 302. The first identification device 303 can automatically identify the orientation of the toothed end of the nut 105 by taking pictures and comparing them with a camera, and automatically reject the nut 105 whose toothed end orientation does not conform. At the same time, a similar second identification device 403 is installed on the sleeve discharge track 402. The second identification device 403 can automatically identify the orientation of the stepped hole of the sleeve 104 by taking pictures with a camera, and reject the sleeve 104 whose stepped hole orientation does not conform.

[0076] According to one embodiment of the present invention, such as Figure 5 As shown, the tightening station includes a pre-tightening station 203 and a final tightening station 204. One end of the second rotating clamping device 502 is opposite to the final tightening station 204. The positioning hole slot 207 on the rotating disk 200 can be rotated sequentially to the first loading station 201, the second loading station 202, the pre-tightening station 203, and the final tightening station 204. A pre-tightening device 208 is provided at the pre-tightening station 203, and a final tightening device 209 is provided at the final tightening station 204.

[0077] The tightening and assembly process of the single-sided connecting bolt 100 is divided into two stations. The single-sided connecting bolt 100 is pre-tightened at the pre-tightening station 203, and then finally tightened at the final tightening station 204 using torque control. The final tightening device 209 can be set with a torque value. When the torque of the core rod 101 screwing into the nut 105 reaches the set torque value, tightening automatically stops, thereby achieving precise control of the engagement position of the single-sided connecting bolt 100 and improving the reliability, stability, and consistency of the assembly quality.

[0078] According to one embodiment of the present invention, such as Figure 6As shown, the end of the first robotic arm 411 has a second gripper (not shown) for gripping the nail sleeve 104, the nail body 102, and the core rod 101, and a suction cup 412 for picking up the ring 103. The ring 103 is made of polyoxymethylene, which is a thin-walled part and is easily deformed during the gripping process. Therefore, a vacuum adsorption structure is used to adsorb and load the ring 103 to avoid damage to the ring 103.

[0079] Specifically, such as Figure 6 As shown, the suction cup 412 has a suction head 413 that can be inserted into the ring 103. An adsorption channel 414 is provided inside the suction cup 412. One end of the adsorption channel 414 is connected to a vacuum source through a pipe 415. The other end of the adsorption channel 414 extends into the suction head 413 and penetrates the side wall of the suction head 413 so as to be opposite to the inner side wall of the ring 103.

[0080] According to one embodiment of the present invention, such as Figure 7 As shown, the rotary disk 200 has multiple mounting holes 205 spaced apart along its circumference. Each mounting hole 205 contains a positioning sleeve 206, which forms a positioning groove 207. The single-sided connecting bolt 100 is placed in the positioning groove 207 and positioned accordingly. For single-sided connecting bolts 100 of different sizes, the corresponding positioning sleeve 206 can be directly replaced, increasing the processing size range of the equipment.

[0081] According to one embodiment of the present invention, such as Figure 5 As shown, the unloading platform 501 is equipped with a nut pressing device 503. A second rotating clamping device 502 (robotic arm) is located between the nut pressing device 503 and the final tightening station 204 to transfer the assembled single-sided connecting bolt 100 from the final tightening station 204 to the nut pressing device 503. The nut pressing device 503 can automatically position the assembled nut pressing device 503 and simultaneously press the nut 105 with three riveting heads to ensure uniform force at three points.

[0082] According to one embodiment of the present invention, such as Figure 5 As shown, the unloading platform 501 is also equipped with a detection device 504. A second sliding clamping device is provided between the detection device 504 and the nut pressing device 503. The second sliding clamping device has a second servo slide 505 and a third jaw 506 for clamping the single-sided connecting bolt 100. The third jaw 506 is slidably mounted on the second servo slide 505, with its two ends located at the nut pressing device 503 and the detection device 504, respectively. The detection device 504 is a maximum physical measurement fixture. The third jaw 506 on the second servo slide 505 places the assembled single-sided connecting bolt 100 into the maximum physical measurement fixture. Qualified workpieces can pass through, while unqualified workpieces cannot.

[0083] According to one embodiment of the present invention, such as Figure 5 As shown, the unloading unit 500 also includes a hopper 507. A third rotary clamping unit 508 for gripping the single-sided connecting bolt 100 is provided between the unloading platform 501 and the hopper 507. The third rotary clamping unit 508 can also be a robot with multiple degrees of freedom. After the single-sided connecting bolt 100 has completed inspection, the third rotary clamping unit 508 (robot) automatically places the assembled single-sided connecting bolt 100 into the qualified material box in the hopper 507, and can also place unqualified workpieces into the unqualified material box.

[0084] The automatic assembly process of the single-sided connecting bolt automatic assembly machine of this utility model is as follows:

[0085] 1. Automated batching and pre-assembly:

[0086] 1.1 The operator places the nail body 102, core rod 101, nut 105, nail sleeve 104 and ring 103 into the corresponding vibrating feeder;

[0087] 1.2 The nut vibrating feeding plate 301 vibrates and automatically sorts the nuts for discharge. By comparing photos taken by a camera, the direction of the toothed end of the nut 105 is automatically identified, and nuts 105 whose toothed end direction does not match are automatically rejected.

[0088] 1.3 The first gripper 305 on the first servo slide 304 automatically picks up the nut 105 and places it into the positioning hole slot 207 at the first loading station 201. The rotary disk 200 rotates to the second loading station 202.

[0089] 1.4 The vibrating feeding plate 401 of the nail sleeve vibrates and automatically sorts the materials for discharge. The camera takes pictures and automatically identifies the direction of the stepped hole of the nail sleeve 104, and removes the nail sleeve 104 whose stepped hole direction does not conform.

[0090] 1.5 The gripper on the first robotic arm 411 picks up the nail sleeve 104 and places it into the positioning hole slot 207 located at the second loading station 202, with the nail sleeve 104 positioned above the nut 105.

[0091] 1.6 The suction cup 412 on the first robotic arm 411 picks up the ring 103 and automatically places the ring 103 into the stepped hole of the nail sleeve 104;

[0092] 1.7 The nail body vibrating feeding plate 406 vibrates, automatically sorts and discharges the nails, and the gripper on the first robot arm 411 puts the nail body 102 into the positioning hole slot 207 located at the second feeding station 202, and the nail body 102 is located above the nail sleeve 104.

[0093] 1.8 The core rod vibrating feeding plate 408 vibrates, automatically sorts and discharges the material, and the gripper on the first robot arm 411 puts the core rod 101 into the positioning hole slot 207 located at the second feeding station 202 and inserts the core rod 101 into the center hole of the nail body 102.

[0094] 1.9 Rotate the rotary disk 200 to the pre-tightening station 203 to pre-tighten the single-sided connecting bolt 100.

[0095] 2. Automatic assembly, completing the screwing of core rod 101 into nut 105 at the designated position, nut 105 pressing indentation, and automatic measurement:

[0096] 2.1. Screwing the core rod 101 into the nut 105: The rotary disk 200 rotates to the final tightening position 204, and the torque value is set. When the torque of the core rod 101 into the nut 105 reaches the set value, the tightening will automatically stop.

[0097] 2.2 Nut 105 Socketing: The robot arm places the tightened single-sided connecting bolt 100 onto the nut socketing device 503. The nut socketing device 503 automatically positions the single-sided connecting bolt 100, and the three rivet heads simultaneously socket the nut 105.

[0098] 2.3 Automatic Measurement: The third gripper 506 on the second servo slide 505 places the assembled single-sided connecting bolt 100 into the maximum physical measurement fixture. Qualified workpieces can pass through, while unqualified workpieces cannot.

[0099] 3. Material feeding:

[0100] 3.1 The robotic arm automatically places the assembled single-sided connecting bolts 100 into the qualified material box in the hopper 507;

[0101] 3.2. When one box is full, the system automatically loads the next box and prompts the user to remove the full, qualified material box.

[0102] 3.3. Place 100 single-sided connecting bolts that fail the inspection into the defective material box.

[0103] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An automatic assembly machine for single-sided connecting bolts, used for feeding and assembling single-sided connecting bolts (100) including a core rod (101), a bolt body (102), a ring (103), a bolt sleeve (104), and a nut (105), characterized in that, The automatic assembly machine for single-sided connecting bolts includes: A rotating disk (200) is provided with a first loading station (201), a second loading station (202) and a screwing station at intervals along the circumferential direction of the rotating disk (200). The rotating disk (200) is provided with positioning holes and slots (207) that can be rotated sequentially to the first loading station (201), the second loading station (202) and the screwing station. The first feeding unit (300) has a nut vibration feeding plate (301). The discharge port of the nut vibration feeding plate (301) is connected to the first feeding station (201) through a first sliding clamping device to transfer the nut (105) in the nut vibration feeding plate (301) to the positioning hole groove (207). The second feeding unit (400) has a nail sleeve vibrating feeding plate (401), a ring vibrating feeding plate (404), a nail body vibrating feeding plate (406) and a core rod vibrating feeding plate (408). The discharge port of each vibrating feeding plate of the second feeding unit (400) is connected to the second feeding station (202) through a first rotating clamping device (410) to transfer the nail sleeve (104), the ring (103), the nail body (102) and the core rod (101) in each vibrating feeding plate of the second feeding unit (400) to the positioning hole groove (207) in sequence. The unloading unit (500) has an unloading platform (501), which is connected to the screwing station via a second rotating clamping device (502) to transfer the assembled single-sided connecting bolt (100) from the positioning hole (207) to the unloading platform (501).

2. The automatic assembly machine for single-sided connecting bolts according to claim 1, characterized in that, The ends of the axially connected nail sleeve (104) and the nut (105) are both toothed ends with mating teeth. The end of the nail sleeve (104) away from the nut (105) is provided with a stepped hole for installing the ring (103). The discharge port of the nut vibrating feeder (301) is provided with a nut discharge track (302), and the nut discharge track (302) is provided with a first identification device (303) for identifying the orientation of the toothed end of the nut (105); and / or, the discharge port of the nail sleeve vibrating feeder (401) is provided with a nail sleeve discharge track (402), and the nail sleeve discharge track (402) is provided with a second identification device (403) for identifying the orientation of the end of the nail sleeve (104) with the stepped hole.

3. The automatic assembly machine for single-sided connecting bolts according to claim 1 or 2, characterized in that, The screwing station includes a pre-tightening station (203) and a final tightening station (204). One end of the second rotating clamping device (502) is opposite to the final tightening station (204). The positioning hole slot (207) on the rotating disk (200) can be rotated sequentially to the first loading station (201), the second loading station (202), the pre-tightening station (203), and the final tightening station (204). The pre-tightening station (203) is provided with a pre-tightening device (208), and the final tightening station (204) is provided with a final tightening device (209).

4. The automatic assembly machine for single-sided connecting bolts according to claim 1, characterized in that, The first sliding clamping device has a first servo slide (304) and a first gripper (305) for gripping the nut (105). The first gripper (305) is slidably disposed on the first servo slide (304). The two ends of the first servo slide (304) are respectively located at the discharge port of the nut vibrating feeding plate (301) and at the first feeding station (201).

5. The automatic assembly machine for single-sided connecting bolts according to claim 1, characterized in that, The first rotating clamping device (410) is a first manipulator (411) with multiple degrees of freedom. The end of the first manipulator (411) has a second gripper for gripping the nail sleeve (104), the nail body (102) and the core rod (101) and a suction cup (412) for absorbing the ring (103).

6. The automatic assembly machine for single-sided connecting bolts according to claim 5, characterized in that, The suction cup (412) has a suction head (413) that can be inserted into the ring (103). An adsorption channel (414) is provided in the suction cup (412). One end of the adsorption channel (414) is connected to a vacuum source through a pipe (415). The other end of the adsorption channel (414) extends into the suction head (413) and penetrates the side wall of the suction head (413) so as to be opposite to the inner side wall of the ring (103).

7. The automatic assembly machine for single-sided connecting bolts according to claim 1, characterized in that, The rotating disk (200) has a plurality of mounting holes (205) spaced apart along its circumferential direction. A positioning sleeve (206) is installed in each mounting hole (205), and a positioning hole groove (207) is formed in the positioning sleeve (206).

8. The automatic assembly machine for single-sided connecting bolts according to claim 3, characterized in that, The unloading platform (501) is provided with a nut pressing device (503), and the second rotating clamping device (502) is located between the nut pressing device (503) and the final tightening station (204) to transfer the assembled single-sided connecting bolt (100) from the final tightening station (204) to the nut pressing device (503).

9. The automatic assembly machine for single-sided connecting bolts according to claim 8, characterized in that, The unloading platform (501) is also equipped with a detection device (504). A second sliding clamping device is provided between the detection device (504) and the nut pressing device (503). The second sliding clamping device has a second servo slide (505) and a third jaw (506) for clamping the single-sided connecting bolt (100). The third jaw (506) is slidably disposed on the second servo slide (505). The two ends of the second servo slide (505) are respectively located at the nut pressing device (503) and the detection device (504).

10. The automatic assembly machine for single-sided connecting bolts according to claim 9, characterized in that, The unloading unit (500) also includes a hopper (507), and a third rotating clamping unit (508) for clamping the single-sided connecting bolt (100) is provided between the unloading platform (501) and the hopper (507).

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