A fully automatic threaded connection device for cabin sections with a large aspect ratio

Abstract

The present invention relates to a fully automatic threaded connection device for cabin sections with a large aspect ratio, wherein a clamping and tightening mechanism is provided at the end of a main frame, the clamping and tightening mechanism includes a movable clamping and tightening assembly, a cabin section support mechanism, a floating clamping mechanism and a positioning clamping mechanism are sequentially provided on the main frame, wherein the cabin section support mechanism is provided with a liftable bracket, and the rotating cabin section is placed on the bracket after input, the floating clamping mechanism includes a floating mounting seat, a longitudinal floating seat and a transverse floating seat, wherein the floating mounting seat is fixed on the main frame, two longitudinal floating seats are respectively provided on both sides of the interior of the floating mounting seat, the lower sides of the two ends of the transverse floating seat are respectively slidably connected with the longitudinal floating seats on the corresponding sides, a first supporting clamping assembly is provided on the transverse floating seat, and a second supporting clamping assembly is provided at the upper end of the positioning clamping mechanism. During the cabin section tightening process, the present invention can effectively avoid the situation where the threads of the two cabin sections are stuck due to the strong tension, and can also reduce thread wear.

Description

Technical Field

[0001] The invention relates to the field of mechanical assembly, in particular to a fully automatic threaded connection device for cabin sections with a large aspect ratio. Background Art

[0002] Threaded connections are the most commonly used connection method in mechanical assembly. Existing horizontal tightening equipment for compartments with large aspect ratios is mostly semi-automated, requiring manual assistance for pre-tightening. Furthermore, for compartments without special-shaped sections, cylindrical compartments can only be tightened by clamping to generate friction. However, automatic docking and tightening of cylindrical compartments is difficult. The key issue is that during tightening, due to the long compartments, the weight of the product itself affects the rotating compartment threads, causing high runout during horizontal tightening. This can lead to the threads of the two compartments becoming stuck. This situation has the following disadvantages: First, manual operation is required in certain hazardous workplaces, and operator safety cannot be guaranteed. Second, in semi-automatic working environments, people and equipment are operated simultaneously, making it impossible to isolate them from each other, and people may be harmed by other equipment. Third, the threads may be damaged during tightening, or the specified tightening torque may not be achieved due to thread jamming.

[0003] Patent CN112404965B discloses a highly dexterous tightening and assembly method for the thread of a deformable barrel segment with a large aspect ratio. In addition to the tightening mechanism, its structural part also includes a first adjustment tool, a second adjustment tool, a position and posture adjustment mechanism and other devices. However, this method is mainly aimed at the problem that the tightening drive rotation axis and the central axis of the threaded sections of the two barrel segments do not coincide when the two barrel segments are automatically tightened, because slender barrels with a large aspect ratio are prone to misalignment between the threaded section and the barrel body, and the barrel body itself is bent. Summary of the Invention

[0004] The purpose of the present invention is to provide a fully automatic threaded connection device for cabin sections with a large aspect ratio, which can effectively avoid the situation where the threads of the two cabin sections are stuck during the tightening process of the cabin sections, and can also reduce thread wear.

[0005] The object of the present invention is achieved through the following technical solutions:

[0006] The cam is fixed to the chassis and is adapted to move the cam forwardly and downwardly from one end of the chassis to the other end of the chassis, the cam being adapted to move the cam forwardly and downwardly from one end of the chassis to the other end of the chassis.

[0007] A longitudinal floating slider is provided on one side of the longitudinal floating seat to cooperate with the longitudinal slide rail provided on the inner wall of the corresponding side of the floating mounting seat. A transverse floating slider is provided on the upper end of the longitudinal floating seat to cooperate with the transverse slide rail provided on the lower side of the transverse floating seat. A floating support assembly with a floating spring is provided on the floating mounting seat, and the longitudinal floating seat is floatingly supported by the floating spring on the corresponding side.

[0008] The floating support assembly includes a floating guide shaft and a fixed sleeve, wherein the lower end of the floating guide shaft is threadedly inserted into the fixed sleeve, and the floating spring is sleeved on the floating guide shaft and arranged between the longitudinal floating seat and the upper end surface of the fixed sleeve.

[0009] A homing cylinder is provided inside the floating mounting seat, and a homing positioning pin is provided at the power shaft end of the homing cylinder. A homing positioning pin hole cooperating with the homing positioning pin is provided on the lower side of the transverse floating seat.

[0010] The first supporting clamping assembly on the transverse floating seat includes a first positioning clamping seat, a first follower clamping seat and a first clamping cylinder, wherein the two first clamping cylinders are respectively arranged on both sides of the transverse floating seat, the first positioning clamping seat and the first follower clamping seat are respectively connected to the first clamping cylinders on the corresponding sides, and a cabin section placement frame A is provided in the middle of the transverse floating seat; first guide blocks are provided on both sides of the inside of the transverse floating seat, and the lower sides of the first positioning clamping seat and the lower sides of the first follower clamping seat are respectively slidably matched with the first guide blocks on the corresponding sides.

[0011] The clamping and tightening mechanism includes a movable seat, a driving motor, a driving screw, a driving slide, an adaptive spring and an elastic slide, wherein the driving screw is driven to rotate by the driving motor, a nut is provided inside the driving slide and is sleeved on the driving screw, the elastic slide is sleeved on the driving screw and is connected to the driving slide through an adaptive spring, the upper end of the elastic slide is fixedly connected to the movable seat, and a clamping and tightening assembly is provided on the upper side of the movable seat.

[0012] The clamping and tightening mechanism includes a base, and the base is fixed on the main frame. The lower side of the movable seat is slidably connected to the base. The driving motor is arranged on the lower side of the base. The driving screw is rotatably arranged on the base, and the driving motor is connected to the shaft end of the driving screw through a movable transmission assembly.

[0013] The clamping and tightening assembly on the movable seat includes a tightening device, a tightening transmission assembly and a clamping chuck, wherein the movable seat is provided with a chuck bearing seat, the chuck shaft on the rear side of the clamping chuck is arranged on the chuck bearing seat, and the rear end of the chuck shaft is connected to the power shaft end of the tightening device through the tightening transmission assembly.

[0014] The cabin section support mechanism includes a lifting cylinder, a support frame and a lifting frame, wherein the support frame is fixed on the main frame, the lifting frame is slidably inserted into the support frame, the lifting cylinder is arranged in the support frame and the power shaft end is fixedly connected to the lifting frame.

[0015] A positioning support is provided at the upper end of the positioning clamping mechanism, and a second support clamping assembly is provided on the positioning support. The second support clamping assembly includes a second clamping cylinder, a second positioning clamping seat and a second follower clamping seat, wherein the two second clamping cylinders are respectively arranged on both sides of the positioning support, and the second positioning clamping seat and the second follower clamping seat are respectively fixedly connected to the second clamping cylinders on the corresponding sides, and a cabin section placement rack B is provided in the middle of the positioning support; second guide blocks are provided on both sides of the interior of the positioning support, and the lower sides of the second positioning clamping seat and the second follower clamping seat are respectively slidably connected to the second guide blocks on the corresponding sides.

[0016] The advantages and positive effects of the present invention are:

[0017] 1. In the floating clamping mechanism of the present invention, the floating support formed by the longitudinal floating seat and the transverse floating seat can make the clamping section move flexibly with the jumping of the rotating section during the tightening process, thereby avoiding the situation where the threads of the two sections are stuck due to the tension. In addition, since the floating linear slide rail has high strength and strong bending and torsion resistance, it can withstand the torque generated during the tightening process.

[0018] 2. In the floating clamping mechanism of the present invention, the lower end of the longitudinal floating seat is floatingly supported by a floating spring mounted on the floating guide shaft, wherein the floating guide shaft can not only realize the telescopic guidance of the floating spring, but also limit the downward displacement of the longitudinal floating seat, thereby limiting the compression amount of the floating spring, and by screwing the floating guide shaft to change its height, the compression amount of the floating spring can be adjusted. Therefore, the present invention can flexibly adjust the floating range of the longitudinal floating seat according to the actual conditions of different products, thereby better meeting the flexible follow-up requirements of the clamping section when it rotates and jumps with the rotating section during the tightening process.

[0019] 3. The floating clamping mechanism of the present invention is provided with a return cylinder and a return positioning pin to realize the return action of the horizontal floating seat, thereby ensuring that the initial position of the clamping compartment is consistent each time it is tightened and is not affected by the floating state.

[0020] 4. In the clamping and tightening mechanism of the present invention, the flexible feeding structure formed by the driving slide, the adaptive spring and the elastic slide can ensure that the thread feed speed of the rotating compartment is automatically matched with the tightening speed during the tightening process. In addition, since the adaptive spring is used for flexible feeding, the axial force between the compartment threads is the elastic force of the spring. This force is relatively small and can be adaptively increased or decreased according to actual conditions. It can greatly reduce the friction caused by the mutual squeezing of the threads during the tightening process and reduce the wear of the threads. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention,

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of the clamping and tightening mechanism.

[0023] Figure 3 for Figure 2 The main view of the clamping and tightening mechanism,

[0024] Figure 4 for Figure 1 Schematic diagram of the structure of the middle cabin section support mechanism,

[0025] Figure 5 for Figure 1 Schematic diagram of the structure of the floating clamping mechanism.

[0026] Figure 6 for Figure 5 Cross-sectional view of the floating clamping mechanism,

[0027] Figure 7 for Figure 1 Schematic diagram of the structure of the positioning clamping mechanism.

[0028] Among them, 1 is the main frame, 2 is the clamping and tightening mechanism, 201 is the driving motor, 202 is the driving screw, 203 is the clamping chuck, 204 is the moving slide rail, 205 is the base, 206 is the tightening transmission assembly, 207 is the tightening device, 208 is the moving transmission assembly, 209 is the elastic slide seat, 210 is the adaptive spring, 211 is the driving slide seat, 212 is the moving seat, 213 is the chuck bearing seat, 214 is the connecting seat, 3 is the cabin support mechanism, 301 is the lifting cylinder, 302 is the supporting frame, 303 is the lifting slide rail, 304 is the lifting frame, 305 is the bracket, 4 is the floating clamping mechanism, 401 is the floating mounting seat, 4011 is the mounting partition, 402 is the horizontal floating seat, 4021 is The first guide block, 4022 is the return positioning pin hole, 403 is the first clamping cylinder, 404 is the first positioning clamp seat, 405 is the first follower clamp seat, 406 is the cabin section placement rack A, 407 is the longitudinal floating seat, 4071 is the transverse floating slider, 4072 is the longitudinal floating slider, 408 is the floating support assembly, 4081 is the floating guide shaft, 4082 is the floating spring, 4083 is the fixed sleeve, 409 is the return cylinder, 4091 is the return positioning pin, 5 is the positioning clamping mechanism, 501 is the positioning mounting seat, 502 is the positioning support, 5021 is the second guide block, 503 is the second clamping cylinder, 504 is the second follower clamp seat, 505 is the second positioning clamp seat, 506 is the cabin section placement rack B. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] like Figures 1 to 7 As shown, the present invention includes a main frame 1, the end of the main frame 1 is provided with a clamping and tightening mechanism 2, the clamping and tightening mechanism 2 includes a movable clamping and tightening assembly, and the main frame 1 is provided with a cabin support mechanism 3, a floating clamping mechanism 4 and a positioning clamping mechanism 5 in sequence, wherein Figure 4 As shown, the cabin support mechanism 3 is provided with a liftable bracket 305, and the rotating cabin is placed on the bracket 305 after input, as shown in FIG. Figures 5-6 As shown, the floating clamping mechanism 4 includes a floating mounting seat 401, a longitudinal floating seat 407 and a transverse floating seat 402, wherein the floating mounting seat 401 is fixed on the main frame 1, and the two longitudinal floating seats 407 are respectively arranged on both sides of the floating mounting seat 401, and the lower sides of the two ends of the transverse floating seat 402 are respectively slidably connected with the longitudinal floating seats 407 on the corresponding sides. A first supporting clamping assembly is provided on the transverse floating seat 402, and a second supporting clamping assembly is provided on the upper end of the positioning clamping mechanism 5. After the clamping compartment is input, it is clamped by the first supporting clamping assembly and the second supporting clamping assembly. During docking, the rear end of the rotating compartment is clamped and rotated by the clamping and tightening assembly and docked with the clamping compartment.

[0031] like Figure 6 As shown, in this embodiment, a longitudinal floating slider 4072 is provided on one side of the longitudinal floating seat 407 to cooperate with a longitudinal slide rail provided on the inner wall of the corresponding side of the floating mounting seat 401. A transverse floating slider 4071 is provided on the upper end of the longitudinal floating seat 407 to cooperate with a transverse slide rail provided on the lower side of the transverse floating seat 402. A floating support assembly 408 with a floating spring 4082 is provided on the floating mounting seat 401, and the longitudinal floating seat 407 is floatingly supported by the floating spring 4082 on the corresponding side. Through the above-mentioned structural design, the present invention allows the clamping compartment to flexibly follow the jumping of the rotating compartment during the tightening process, thereby avoiding the situation where the threads of the two compartments are stuck due to the strong tension. In addition, since the longitudinal slide rail and the transverse slide rail are both linear slide rails, they are strong in strength and strong in bending and torsion resistance, and can therefore withstand the torque generated during the tightening process.

[0032] like Figure 6 As shown, in this embodiment, the floating support assembly 408 includes a floating guide shaft 4081 and a fixed sleeve 4083, wherein the lower end of the floating guide shaft 4081 is threadedly inserted into the fixed sleeve 4083, and the floating spring 4082 is sleeved on the floating guide shaft 4081 and disposed between the longitudinal floating seat 407 and the upper end surface of the fixed sleeve 4083. In addition to providing telescopic guidance for the floating spring 4082, the floating guide shaft 4081 can also limit the downward displacement of the longitudinal floating seat 407, thereby limiting the compression of the floating spring 4082. By rotating the floating guide shaft 4081 to change its height, the compression of the floating spring 4082 can be adjusted. Therefore, the present invention can flexibly adjust the floating range of the longitudinal floating seat 407 according to the actual conditions of different products, thereby better meeting the flexible follow-up requirements when the clamping compartment rotates and jumps with the rotating compartment during the tightening process.

[0033] like Figure 6 As shown, in this embodiment, a mounting partition 4011 is provided inside the floating mounting seat 401 , and the upper end of the fixing sleeve 4083 is fixed on the mounting partition 4011 .

[0034] like Figure 6 As shown, in this embodiment, a return cylinder 409 is provided inside the floating mounting seat 401, and a return positioning pin 4091 is provided on the power shaft end of the return cylinder 409. A return positioning pin hole 4022 is provided on the underside of the transverse floating seat 402 to cooperate with the return positioning pin 4091. When the return cylinder 409 is extended, it can return and fix the transverse floating seat 402 in the floating clamping mechanism 4, thereby maintaining the same initial state of the first supporting clamping assembly on the transverse floating seat 402, that is, ensuring that the initial position of the clamping compartment is consistent each time it is placed.

[0035] like Figures 5-6 As shown, in this embodiment, the first supporting clamping assembly on the transverse floating seat 402 includes a first positioning clamping seat 404, a first follower clamping seat 405, and a first clamping cylinder 403, wherein two first clamping cylinders 403 are respectively arranged on both sides of the transverse floating seat 402, and the first positioning clamping seat 404 and the first follower clamping seat 405 are respectively connected to the first clamping cylinders 403 on the corresponding sides. A cabin placement rack A406 is provided in the middle of the transverse floating seat 402. When the present invention is in operation, the first positioning clamping seat 404 and the first follower clamping seat 405 are first in an open state, and then the cabin is input and placed on the cabin placement rack A406, and then the first positioning clamping seat 404 and the first follower clamping seat 405 are closed to clamp the cabin. In this embodiment, the relationship between the two first clamping cylinders 403 is as follows: the first clamping cylinder 403 driving the first follower clamping seat 405 generates a force that is smaller than the driving force of the first clamping cylinder 403 driving the first positioning clamping seat 404 through a pressure reducing valve or by selecting a small cylinder diameter. In this way, the position of the first positioning clamping seat 404 can be adjusted to keep the clamping section coaxial with the rotating section, thereby playing a positioning role of the clamping section.

[0036] like Figure 5 As shown, in this embodiment, first guide blocks 4021 are provided on both sides of the lateral floating seat 402 to guide the linear movement of the clamping seat on the corresponding side, wherein the lower side of the first positioning clamping seat 404 and the lower side of the first follower clamping seat 405 are respectively slidably matched with the first guide blocks 4021 on the corresponding side.

[0037] like Figures 2-3As shown, in this embodiment, the clamping and tightening mechanism 2 includes a moving seat 212, a driving motor 201, a driving screw 202, a driving slide 211, an adaptive spring 210 and an elastic slide 209, wherein the driving screw 202 is driven to rotate by the driving motor 201, the driving slide 211 is provided with a nut sleeved on the driving screw 202, the elastic slide 209 is sleeved on the driving screw 202 and connected to the driving slide 211 through the adaptive spring 210, the upper end of the elastic slide 209 is fixedly connected to the moving seat 212 through a connecting seat 214, and the upper side of the moving seat 212 is provided with a clamping and tightening assembly for driving the cabin section to rotate. When the present invention is working, the driving motor 201 drives the driving slide 211 to move through the driving screw 202 and the nut, the driving slide 211 drives the moving seat 212 to move through the adaptive spring 210 and the elastic slide 209, and the clamping and tightening assembly of the moving seat 212 clamps the rear end of the cabin section. The flexible feeding structure formed by the above-mentioned driving slide 211, adaptive spring 210 and elastic slide 209 adopted in the present invention can ensure that the thread feeding speed of the compartment section automatically matches the tightening speed during the tightening process. In addition, since the adaptive spring 210 is used for flexible feeding, the axial force between the compartment threads is the elastic force of the spring. This force is relatively small and can be adaptively increased or decreased according to actual conditions. It can greatly reduce the friction caused by the mutual squeezing of the threads during the tightening process and reduce the wear of the threads.

[0038] like Figures 2-3 As shown, in this embodiment, the clamping and tightening mechanism 2 includes a base 205, and the base 205 is fixed on the main frame 1, and the lower side of the movable seat 212 is slidably connected to the base 205, wherein the base 205 is provided with a movable slide rail 204, and the lower side of the movable seat 212 is provided with a movable slider that cooperates with the movable slide rail 204, the driving motor 201 is provided on the lower side of the base 205, the driving screw 202 is rotatably provided on the base 205, and the driving motor 201 is connected to the shaft end of the driving screw 202 through a movable transmission component 208, and the movable transmission component 208 can select a suitable transmission structure according to actual needs, such as a sprocket chain drive or a pulley belt drive, etc., which is a well-known technology in the field.

[0039] like Figures 2-3As shown, in this embodiment, the clamping and tightening assembly on the movable seat 212 includes a tightening device 207, a tightening transmission assembly 206 and a clamping chuck 203, wherein the movable seat 212 is provided with a chuck bearing seat 213, the rear chuck shaft of the clamping chuck 203 is provided on the chuck bearing seat 213 and the rear end is connected to the power shaft end of the tightening device 207 through the tightening transmission assembly 206, the clamping chuck 203 clamps the rear end of the rotating compartment, and then the tightening device 207 is started and transmits torque through the tightening transmission assembly 206 to drive the clamping chuck 203 and the rotating compartment to rotate. The tightening device 207 and the clamping chuck 203 are both well-known technologies in the art and are commercially available products. In this embodiment, the tightening device 207 adopts a fixed torque tightening machine, and the clamping chuck 203 is a pneumatic chuck. In addition, the tightening transmission assembly 206 can select a suitable transmission structure according to actual needs, such as a sprocket chain drive or a pulley belt drive.

[0040] like Figure 4 As shown, in this embodiment, the cabin support mechanism 3 includes a lifting cylinder 301, a support frame 302 and a lifting frame 304, wherein the support frame 302 is fixed on the main frame 1, and the lifting frame 304 is slidably inserted into the support frame 302. In this embodiment, a lifting rail 303 is provided on the outside of the lifting frame 304, and a lifting slider that cooperates with the lifting rail 303 is provided on the inside of the support frame 302. The lifting cylinder 301 is arranged in the support frame 302 and the power shaft end is fixedly connected to the lifting frame 304. The lifting frame 304 is driven to rise and fall by the lifting cylinder 301, and a bracket 305 is provided on the upper end of the lifting frame 304.

[0041] like Figure 7 As shown, in this embodiment, the positioning and clamping mechanism 5 includes a positioning mounting seat 501, the positioning mounting seat 501 is fixedly mounted on the main frame 1 and a positioning support 502 is provided on the upper end, the positioning support 502 is provided with a second support and clamping assembly, the second support and clamping assembly includes a second clamping cylinder 503, a second positioning clamping seat 505 and a second follower clamping seat 504, wherein the two second clamping cylinders 503 are respectively arranged on both sides of the positioning support 502, the second positioning clamping seat 505 and the second follower clamping seat 504 are respectively fixedly connected to the second clamping cylinder 503 on the corresponding side, and its working principle is the same as that of the clamping seat in the first support and clamping assembly, the middle part of the positioning support 502 is provided with a cabin placement frame B506, and second guide blocks 5021 for guiding the linear movement of the clamping seat are provided on both sides of the positioning support 502, wherein the lower side of the second positioning clamping seat 505 and the lower side of the second follower clamping seat 504 are respectively slidably connected to the second guide blocks 5021 on the corresponding side.

[0042] The working principle of the present invention is:

[0043] The present invention comprises the following steps when working:

[0044] Step 1: After the rotating cabin is input, it is placed on the bracket 305 of the cabin support mechanism 3. After the clamping cabin is input, the front end is placed on the cabin placement rack A406 in the floating clamping mechanism 4, and the rear end is placed on the cabin placement rack B506 of the positioning clamping mechanism 5;

[0045] In addition, at this time, the return cylinder 409 in the floating clamping mechanism 4 is in an extended state, and the return positioning pin 4091 is inserted into the return positioning pin hole 4022 on the lower side of the horizontal floating seat 402, thereby ensuring that the initial position of the clamping compartment is accurate, and the two clamping seats of the floating clamping mechanism 4 and the two clamping seats of the positioning clamping mechanism 5 are both in an open state.

[0046] Step 2: The clamping and tightening assembly in the clamping and tightening mechanism 2 moves and clamps the rear end of the rotating compartment, wherein the clamping chuck 203 in the clamping and tightening mechanism 2 is used to clamp the rear end of the corresponding compartment.

[0047] Step 3: The first supporting and clamping assembly at the upper end of the floating clamping mechanism 4 clamps the front end of the clamping compartment, and the second supporting and clamping assembly at the upper end of the positioning clamping mechanism 5 clamps the rear end of the clamping compartment;

[0048] During clamping, taking the first supporting clamping assembly as an example, the relationship between the two first clamping cylinders 403 is as follows: the first clamping cylinder 403 driving the first follower clamping seat 405 generates a force smaller than the force generated by the first clamping cylinder 403 driving the first positioning clamping seat 404 through a pressure reducing valve or by selecting a small cylinder diameter. In this way, the position of the first positioning clamping seat 404 can be adjusted to keep the clamping section coaxial with the rotating section, thereby playing a positioning role of the clamping section.

[0049] Step 4: The bracket 305 in the cabin support mechanism 3 descends to leave space for the rotating cabin to move forward.

[0050] Step 5: The rotating compartment is driven to move forward by the moving seat 212 in the clamping and tightening mechanism 2 until the end of the rotating compartment contacts the thread of the end of the clamping compartment and compresses the adaptive spring 210 on the lower side of the moving seat 212.

[0051] Step 6: The homing cylinder 409 in the floating clamping mechanism 4 is retracted. At this time, the transverse floating seat 402 and the longitudinal floating seat 407 in the floating clamping mechanism 4 are both in a free state.

[0052] Step 7: The clamping and tightening assembly in the clamping and tightening mechanism 2 starts to drive the rotating compartment to rotate to achieve tightening, that is, the tightening device 207 starts to drive the clamping chuck 203 to rotate, and the clamping chuck 203 drives the rotating compartment to rotate and tighten and dock with the clamping compartment.

[0053] Among them, the floating clamping mechanism 4, the floating support formed by the longitudinal floating seat 407 and the transverse floating seat 402 can make the clamping section move flexibly with the jumping of the rotating section during the tightening process, thereby avoiding the situation where the threads of the two sections are stuck. In addition, since the floating linear slide rail has high strength and strong bending and torsion resistance, it can withstand the torque generated during the tightening process.

[0054] In the clamping and tightening mechanism 2, the flexible feeding structure formed by the driving slide 211, the adaptive spring 210 and the elastic slide 209 can ensure that the thread feed speed of the compartment is automatically matched with the tightening speed during the tightening process. In addition, since the adaptive spring 210 is used for flexible feeding, the axial force between the compartment threads is the elastic force of the spring. This force is relatively small and can be adaptively increased or decreased according to actual conditions. It can greatly reduce the friction caused by the mutual squeezing of the threads during the tightening process and reduce the wear of the threads.

[0055] Step 8: After tightening, each mechanism returns to its original position. At this time, the product is supported by the compartment rack A406 and the compartment rack B506, and then an external device (such as a 6-degree-of-freedom robot or a frame manipulator, etc.) removes the tightened product.

[0056] like Figure 1 As shown, the present invention can set clamping and tightening mechanisms 2 at both ends of the main frame 1 as needed, so that the assembly of three sections can be completed, wherein the middle clamping section is clamped by the first support clamping assembly and the second support clamping assembly, and the rotating sections at both ends are clamped by the corresponding side clamping and tightening mechanisms 2 respectively. The present invention can also set the clamping and tightening mechanism 2 at only one end of the main frame 1 to complete the assembly operation of the rotating section and the clamping section.

Claims

1. A fully automatic threaded connection device for cabin sections with a large aspect ratio, characterized by: The invention comprises a main frame (1), wherein the end of the main frame (1) is provided with a clamping and tightening mechanism (2), wherein the clamping and tightening mechanism (2) comprises a movable clamping and tightening assembly, wherein the main frame (1) is provided with a cabin support mechanism (3), a floating clamping mechanism (4) and a positioning clamping mechanism (5) in sequence, wherein the cabin support mechanism (3) is provided with a liftable bracket (305), and the rotating cabin is placed on the bracket (305) after input, and the floating clamping mechanism (4) comprises a floating mounting seat (401), a longitudinal floating seat (407) and a transverse floating seat (402), wherein The floating mounting seat (401) is fixed on the main frame (1), and two longitudinal floating seats (407) are respectively arranged on both sides of the floating mounting seat (401). The lower sides of the two ends of the transverse floating seat (402) are respectively slidably connected with the longitudinal floating seats (407) on the corresponding sides. A first supporting clamping assembly is provided on the transverse floating seat (402), and a second supporting clamping assembly is provided on the upper end of the positioning clamping mechanism (5). After the clamping compartment is input, it is clamped by the first supporting clamping assembly and the second supporting clamping assembly. The rear end of the rotating compartment is clamped and rotated by the clamping and tightening assembly and docked with the clamping compartment. A longitudinal floating slider (4072) is provided on one side of the longitudinal floating seat (407) to cooperate with a longitudinal slide rail provided on the inner wall of the corresponding side of the floating mounting seat (401); a transverse floating slider (4071) is provided on the upper end of the longitudinal floating seat (407) to cooperate with a transverse slide rail provided on the lower side of the transverse floating seat (402); a floating support assembly (408) with a floating spring (4082) is provided on the floating mounting seat (401), and the longitudinal floating seat (407) is floatingly supported by the floating spring (4082) on the corresponding side; The floating support assembly (408) includes a floating guide shaft (4081) and a fixed sleeve (4083), wherein the lower end of the floating guide shaft (4081) is threadedly inserted into the fixed sleeve (4083), and the floating spring (4082) is sleeved on the floating guide shaft (4081) and arranged between the longitudinal floating seat (407) and the upper end surface of the fixed sleeve (4083).

2. The fully automatic threaded connection device for cabin sections with a large aspect ratio according to claim 1 is characterized in that: A return cylinder (409) is provided inside the floating mounting seat (401), and a return positioning pin (4091) is provided at the power shaft end of the return cylinder (409), and a return positioning pin hole (4022) that cooperates with the return positioning pin (4091) is provided on the lower side of the lateral floating seat (402).

3. The fully automatic threaded connection device for cabin sections with a large aspect ratio according to claim 1 is characterized in that: The first supporting clamping assembly on the transverse floating seat (402) includes a first positioning clamping seat (404), a first follower clamping seat (405) and a first clamping cylinder (403), wherein the two first clamping cylinders (403) are respectively arranged on both sides of the transverse floating seat (402), the first positioning clamping seat (404) and the first follower clamping seat (405) are respectively connected to the first clamping cylinders (403) on the corresponding sides, and a cabin section placement rack A (406) is provided in the middle of the transverse floating seat (402); first guide blocks (4021) are provided on both sides of the interior of the transverse floating seat (402), and the lower sides of the first positioning clamping seat (404) and the lower sides of the first follower clamping seat (405) are respectively slidably matched with the first guide blocks (4021) on the corresponding sides.

4. The fully automatic threaded connection device for cabin sections with a large aspect ratio according to claim 1 is characterized in that: The clamping and tightening mechanism (2) comprises a movable seat (212), a driving motor (201), a driving screw (202), a driving slide (211), an adaptive spring (210) and an elastic slide (209), wherein the driving screw (202) is driven to rotate by the driving motor (201), a nut is provided inside the driving slide (211) and is sleeved on the driving screw (202), the elastic slide (209) is sleeved on the driving screw (202) and is connected to the driving slide (211) via the adaptive spring (210), the upper end of the elastic slide (209) is fixedly connected to the movable seat (212), and a clamping and tightening assembly is provided on the upper side of the movable seat (212).

5. The fully automatic threaded connection device for cabin sections with a large aspect ratio according to claim 4 is characterized in that: The clamping and tightening mechanism (2) includes a base (205), and the base (205) is fixed on the main frame (1), the lower side of the movable seat (212) is slidably connected to the base (205), the driving motor (201) is arranged on the lower side of the base (205), the driving screw (202) is rotatably arranged on the base (205), and the driving motor (201) is connected to the shaft end of the driving screw (202) through a movable transmission component (208).

6. The fully automatic threaded connection device for cabin sections with a large aspect ratio according to claim 4 is characterized in that: The clamping and tightening assembly on the movable seat (212) comprises a tightening device (207), a tightening transmission assembly (206) and a clamping chuck (203), wherein the movable seat (212) is provided with a chuck bearing seat (213), a chuck shaft at the rear side of the clamping chuck (203) is arranged on the chuck bearing seat (213), and the rear end of the chuck shaft is connected to the power shaft end of the tightening device (207) through the tightening transmission assembly (206).

7. The fully automatic threaded connection device for cabin sections with a large aspect ratio according to claim 1 is characterized in that: The cabin section support mechanism (3) comprises a lifting cylinder (301), a support frame (302) and a lifting frame (304), wherein the support frame (302) is fixed on the main frame (1), the lifting frame (304) is slidably inserted into the support frame (302), the lifting cylinder (301) is arranged in the support frame (302) and the power shaft end is fixedly connected to the lifting frame (304).

8. The fully automatic threaded connection device for cabin sections with a large aspect ratio according to claim 1 is characterized in that: The upper end of the positioning and clamping mechanism (5) is provided with a positioning support (502), and the positioning support (502) is provided with a second support and clamping assembly, and the second support and clamping assembly includes a second clamping cylinder (503), a second positioning clamping seat (505) and a second follower clamping seat (504), wherein the two second clamping cylinders (503) are respectively arranged on both sides of the positioning support (502), and the second positioning clamping seat (505) and the second follower clamping seat (504) are respectively fixedly connected to the second clamping cylinder (503) on the corresponding side, and a cabin section placement rack B (506) is provided in the middle of the positioning support (502); second guide blocks (5021) are provided on both sides of the interior of the positioning support (502), and the lower side of the second positioning clamping seat (505) and the lower side of the second follower clamping seat (504) are respectively slidably connected to the second guide blocks (5021) on the corresponding side.

Images