Lightweight seat and production equipment and manufacturing method thereof

Abstract

The application provides a light-weight seat, a production equipment thereof and a manufacturing method thereof, and comprises a seat framework and a conveying line, a tool plate is arranged on the conveying line and is driven to slide by the conveying line, the light-weight seat is installed on the tool plate, at least three jacking mechanisms for lifting the tool plate are arranged on the conveying line from front to back along a conveying direction, an industrial robot for screwing bolts between the seat framework and a back framework is arranged on the conveying line from front to back along the conveying direction in sequence, and a shaking detection device is arranged on the conveying line from front to back along the conveying direction in sequence. The application has the advantages of reasonable design and convenient operation, the fast-opening mechanism is used to realize the work of the operator without bending the waist and easily rotating the tool plate, the combined support frame assembly is used, a plurality of frame lines are bound, the use of steel pipes is saved, the flexibility increases the riding comfort and reduces the weight of the whole seat, the light-weight seat is achieved, the bending action is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to a lightweight seat, production equipment and a manufacturing method thereof. Background Art

[0002] The seat frame is connected by a seat frame mechanism and a back frame mechanism through bolt fastening. Usually, locking is carried out by following the process instructions and manually using a tightening wrench. Since there are certain variables in the matching process of the seat frame and the back frame, a cross-locking method is required to ensure that the variables are reduced. However, manual work often neglects to operate according to the simplest locking method, resulting in certain variations in the matching of the seat frame, causing increased shaking, failure of the return mechanism and other hidden dangers. Moreover, problems are usually not discovered until the final inspection after the seat is completely covered. This leads to the risk of component damage and scrapping during disassembly and refurbishment, a large number of refurbishment personnel, and extended delivery time. Summary of the Invention

[0003] In view of this, an object of the present invention is to provide a lightweight seat, a production device thereof, and a manufacturing method thereof, so as to solve the problems existing in the above-mentioned prior art.

[0004] The present invention is implemented by the following scheme: a lightweight seat, including a seat frame, the seat frame including a seat frame frame and a back frame frame, the back frame frame is screwed to the seat frame frame, a seat support mounting groove is provided on the seat surface of the seat frame frame, a back support surface of the back frame frame is provided with a back support mounting groove, the seat support mounting groove is fixedly connected to a seat support frame wire assembly, and the back support mounting groove is fixedly connected to a back support frame wire assembly.

[0005] Furthermore, the back support frame wire assembly includes several convex frame wires spaced apart from top to bottom and rubber hoses symmetrically arranged on the left and right sides. The middle parts of adjacent convex frame wires are connected by round tubes, and the ends of the convex frame wires are wound and fixed on the rubber hoses on the same side. Several hooks are installed on the left and right sides of the back support frame wire assembly from top to bottom, and the ends of the hooks are fixed on the back frame skeleton on the same side; the seat support frame wire assembly includes curved steel wires horizontally arranged from left to right, and adjacent curved steel wires are connected by plastic strips. Hooks are provided at both ends of the curved steel wire, and grooves cooperating with the hooks are provided on the front and rear frames of the seat frame skeleton.

[0006] A production equipment for lightweight seats includes a conveyor line, wherein a tooling plate driven to slide by the conveyor line is provided on the conveyor line, and a lightweight seat is installed on the tooling plate. At least three lifting mechanisms for lifting the tooling plate are provided on the conveyor line from front to back along the conveying direction. An industrial robot for tightening bolts between a seat frame and a back frame is provided next to the conveyor line corresponding to the first lifting mechanism along the conveying direction. A shaking detection device is provided next to the conveyor line corresponding to the last lifting mechanism along the conveying direction.

[0007] Furthermore, the industrial robot includes a base, a six-axis serial robotic arm is installed on the base, a tightening wrench is installed on the six-axis serial robotic arm, a supporting platform is provided on the side of the base, a plurality of sleeve grooves are provided on the supporting platform, sleeves are provided in the sleeve grooves, and pneumatic clamps are respectively provided on the supporting platform corresponding to each sleeve.

[0008] Furthermore, a quick-opening mechanism is installed next to the lifting mechanism at the middle position on the conveying line, and the quick-opening mechanism includes a quick-opening fixed frame, and a horizontal swing arm is rotatably connected to the quick-opening fixed frame. One end of the horizontal swing arm is rotatably connected to the quick-opening fixed frame through a rotating shaft, and a gear is synchronously connected to the rotating shaft of the horizontal swing arm. A rack that is slidably connected to the gear is installed on the quick-opening fixed frame, and a telescopic cylinder for driving the rack to move is provided on the quick-opening fixed frame.

[0009] Furthermore, the shaking detection device includes a detection device and a limiting device. The detection device is installed next to the conveying line through a frame corresponding to the chair back. The limiting device is located below the detection device. The detection device includes a horizontal servo module corresponding to the seat frame. The horizontal servo module is slidably connected with a vertical servo module. The vertical servo module is installed with a telescopic servo module. The telescopic end of the telescopic servo module corresponds to the chair back of the seat frame. The telescopic end of the telescopic servo module is installed with a data acquisition device. The limiting device includes a horizontal cylinder. The telescopic end of the horizontal cylinder faces the seat frame. The telescopic end of the horizontal cylinder is installed with a limiting plate for abutting and fixing the seat frame.

[0010] Furthermore, the horizontal servo module includes a horizontal seat plate arranged facing the seat frame, the horizontal seat plate is installed on the frame, and the horizontal seat plate is rotatably connected to a horizontal screw mechanism. The vertical servo module includes a vertical seat plate, the vertical seat plate is installed on the horizontal screw mechanism and slides horizontally with the rotation of the horizontal screw, and the vertical seat plate is rotatably connected to a vertical screw mechanism. The telescopic servo module includes a U-shaped mounting plate, the two feet of the U-shaped mounting plate are fixed toward the seat, the connecting plate part of the U-shaped mounting plate is installed on the vertical screw mechanism and slides horizontally with the rotation of the vertical screw, and a cylinder fixing block is rotatably connected between the two foot ends of the U-shaped mounting plate, an electric cylinder is installed on the cylinder fixing block in the U-shaped mounting plate, the telescopic end of the electric cylinder extends through the cylinder fixing block, and a data acquisition device is installed on the protruding end.

[0011] Furthermore, the horizontal screw mechanism includes a horizontally arranged horizontal screw driven by a stepping motor, the horizontal screw is rotatably connected to the horizontal seat plate, the horizontal screw is rotatably connected to a horizontal nut that slides as the screw rotates, and the horizontal nut is fixedly connected to the vertical seat plate. The vertical screw mechanism includes a vertically arranged vertical screw driven by a stepping motor, the vertical screw is rotatably connected to the vertical seat plate, the vertical screw is rotatably connected to a vertical nut that slides as the screw rotates, and the vertical nut is fixedly connected to the U-shaped mounting plate.

[0012] Furthermore, the jacking mechanism includes a vertically arranged lifting cylinder, the telescopic end of the lifting cylinder is upward, a lifting plate is installed on the telescopic end of the lifting cylinder, and a plurality of positioning blocks for fixing the position of the tooling plate are installed on the lifting plate.

[0013] A method for manufacturing a lightweight seat includes placing the seat frame on a tooling plate. When the tooling plate passes the first lifting mechanism of the assembly line, the lifting mechanism's cylinder raises and lowers the tooling plate, and an industrial robot activates a tightening wrench to tighten the seat. Once tightened, the industrial robot resets, the lifting mechanism lowers, and the tooling plate continues to move along the assembly line.

[0014] Then, when the tooling plate passes through the jacking mechanism in the middle of the assembly line, the tooling plate is limited by the mechanical valve, the rear end of the seat support frame assembly is inserted into the rear side of the seat frame, and the front end is fixed in the positioning hole on the front side of the seat frame, and the buckle is knocked in with a rubber hammer; the telescopic rod of the top cylinder of the foot pedal switch quick-opening mechanism is kicked back to its position, driving the outer lock buckle of the linkage mechanism to rotate. When the lock actuates the handle, the tooling plate buckle can be unlocked, so that the seat on the tooling plate pallet is rotated, the operator's foot leaves the foot pedal switch, and the quick-opening mechanism returns to its position; then take the back support frame assembly and insert it into the back frame frame, take the buckle hook and buckle it into the positioning holes of the pipe racks on both sides of the back frame frame in sequence, and then fix the other end of the buckle hook to the hose on the same side of the back support frame assembly, and kick the foot pedal switch to rotate the seat on the tooling plate pallet 180 degrees;

[0015] When the tooling plate passes through the last lifting mechanism of the assembly line, the lifting mechanism cylinder lifts the tooling plate; after the limit plate on the cylinder of the limit device is pushed out, the upper layer of the tooling plate is fixed horizontally; the horizontal servo module starts the stepper motor to move the vertical servo module laterally through the screw, and the vertical servo module starts the stepper motor to move the U-shaped mounting plate longitudinally through the screw, so that the data acquisition device can be accurately moved to the specified position. The data acquisition device is inserted into the seat frame, and the electric cylinder is started to precisely push and pull the data acquisition device to achieve forward and reverse loading. Finally, the data acquisition device converts the data output. After the inspection is completed, each mechanism returns to its position, the lifting mechanism descends, and the seat frame moves to the next workstation.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the quick-opening mechanism enables the operator to easily rotate the tooling plate without bending over, and adopts a combined support frame wire assembly, which is made of multiple frame wires, saving the use of steel pipes. Its flexibility not only increases riding comfort, but also reduces the overall seat weight, achieving the purpose of lightweight seat, and reduces bending movements, thereby improving production efficiency; it is composed of a servo module, an electric cylinder, and an acquisition control system; the Y and Z modules realize the electric cylinder posture adjustment of the loading device, the electric cylinder serves as a servo control system, and the built-in encoder system is used to acquire the displacement, and the electric cylinder is connected to the hinge ear in the Z-direction module through a handover form; the electric cylinder performs servo loading to realize force servo loading, and through forward and reverse loading, the displacement is converted by the servo encoder to obtain the usable torque; and the displacement change of the product during the loading process is acquired, thereby realizing the detection of the chair back shaking amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the seat frame structure of an embodiment of the present invention;

[0019] Figure 3A schematic diagram of the structure of the transmission pipeline embodiment of the present invention;

[0020] Figure 4 A schematic structural diagram of an industrial robot according to an embodiment of the present invention;

[0021] Figure 5 A schematic structural diagram of the placing table embodiment of the present invention;

[0022] Figure 6 A schematic diagram of the working of the quick-opening structure of an embodiment of the present invention;

[0023] Figure 7 A schematic structural diagram of a shaking detection device according to an embodiment of the present invention;

[0024] Figure 8 A schematic structural diagram of a detection device according to an embodiment of the present invention;

[0025] Figure 9 A schematic structural diagram of a data acquisition device according to an embodiment of the present invention;

[0026] Figure 10 Schematic diagram of the force sensor structure according to an embodiment of the present invention.

[0027] In the figure: 1 - seat frame; 2 - seat frame frame; 3 - back frame frame; 4 - seat support mounting slot; 5 - back support mounting slot; 6 - seat support frame wire assembly; 7 - back support frame wire assembly; 8 - convex frame wire; 9 - hose; 10 - round tube; 11 - hook; 12 - curved steel wire; 13 - plastic strip tube; 14 - hook; 15 - conveyor line; 16 - tooling plate; 17 - lifting mechanism; 19 - industrial robot; 20 - sway detection device; 21 - mechanical valve; 22 - base; 23 - six-axis serial robot arm; 24 - tightening wrench; 25 - locking gun head; 26 - supporting platform; 27 - sleeve slot; 28 - sleeve; 30-Pneumatic Gripper; 29-Tooling Slot; 31-Vision System; 32-Groove; 36-Quick Opening Mechanism; 37-Quick Opening Fixture; 38-Horizontal Swing Arm; 39-Telescopic Cylinder; 40-Positioning Column; 41-Detection Device; 42-Limiting Device; 43-Horizontal Servo Module; 44-Vertical Servo Module; 45-Telescopic Servo Module; 46-Data Acquisition Device; 47-Horizontal Cylinder; 48-Limiting Plate; 49-Horizontal Seat Plate; 50-Horizontal Screw Rod mechanism; 51-vertical seat plate; 52-vertical screw mechanism; 53-U-shaped mounting plate; 54-cylinder fixing block; 55-electric cylinder; 56-three-point combiner; 57-expansion sleeve; 58-auxiliary guide rod; 59-L-shaped connecting plate; 60-loading top cylinder; 61-loading head; 62-encoder; 63-force sensor; 64-horizontal auxiliary guide device; 65-vertical auxiliary guide device; 67-partition; 68-force sensor; 69-guide seat. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] like Figure 1-10 As shown, a lightweight seat includes a seat frame 1, which includes a seat frame frame 2 and a back frame frame 3. The back frame frame is screwed to the seat frame frame. A seat support mounting groove 4 is provided on the seat surface of the seat frame frame. A back support mounting groove 5 is provided on the back support surface of the back frame frame. A seat support frame wire assembly 6 is fixedly connected to the seat support mounting groove, and a back support frame wire assembly 7 is fixedly connected to the back support mounting groove.

[0032] In this embodiment, the back support frame wire assembly includes a plurality of convex frame wires 8 spaced apart from top to bottom and rubber hoses 9 symmetrically arranged on the left and right sides. The middle parts of adjacent convex frame wires are connected by round tubes 10. The ends of the convex frame wires are wound and fixed on the rubber hoses on the same side. A plurality of hooks 11 are installed on the left and right sides of the back support frame wire assembly from top to bottom. The hooks can be selected in different specifications and lengths according to needs. The ends of the hooks are fixed on the frame of the back frame skeleton on the same side. When in use, the hooks are taken out and buckled into the positioning holes of the pipe racks on both sides of the back frame skeleton in sequence, and the other end of the hook is hooked and fixed to the same side of the back support frame wire assembly; the seat The support frame wire assembly includes a curved steel wire 12 arranged horizontally from left to right, and adjacent curved steel wires are connected by plastic strips 13. Hooks 14 are provided at both ends of the curved steel wire, and grooves cooperating with the hooks are provided on the front and rear frames of the seat frame skeleton. When in use, the rear end of the seat support frame wire assembly is inserted into the round tube on the rear side of the seat frame skeleton, and its front end is fixed in the positioning hole on the front side of the seat frame skeleton and buckled with a rubber hammer; the back support frame wire assembly and the seat support frame wire assembly are formed by binding multiple frame wires, which saves the use of steel pipes. Its flexibility not only increases riding comfort, but also reduces the overall seat weight, thereby achieving lightweight seats.

[0033] A production equipment for lightweight seats: includes a conveyor line 15, which is a prior art. The surface of the line body is made of extruded aluminum alloy profiles as guide rails, and a gravity conveying system with a double-speed chain is used for conveying. The conveying principle is to use the speed-increasing function of the double-speed chain to make the tooling plate supporting the seat frame on it run quickly. The conveyor line is provided with a tooling plate 16 driven by the conveyor line to slide. Lightweight seats are installed on the tooling plate. At least three lifting mechanisms 17 for lifting the tooling plate are provided from front to back along the conveying direction on the conveyor line. Code readers and sensors are provided on the entrance end of the lifting mechanism in the conveyor line for reading the seat information carried by the tooling plate. The sensor is used to confirm approaching objects. An industrial robot 19 for tightening the bolts between the seat frame and the back frame is provided next to the conveyor line corresponding to the first lifting mechanism along the conveying direction. A shaking detection device 20 is provided next to the conveyor line corresponding to the last lifting mechanism along the conveying direction.

[0034] In this embodiment, a mechanical valve 21 is also provided on the entrance end of the jacking mechanism in the conveying line. The mechanical valve can be an existing swinging rod that is driven to swing by a cylinder. The middle part of the swinging rod is rotatably connected to a fixed frame. A lifting cylinder is installed under one end of the swinging rod, and a support seat is installed on the other end. The support seat is rotatably connected with a roller. When in use, when the telescopic end of the jacking cylinder descends, the end of the swinging rod that is rotatably connected to the lifting cylinder descends synchronously, and the other end of the swinging rod is tilted, driving the support seat to rise, and the roller rests on the edge of the tooling plate to achieve limiting. Later, when it is necessary to move to the next workstation, the lifting cylinder is raised to drive the support seat to descend. At this time, the roller assists in rolling to achieve the removal of the support seat. The corresponding support seat on the conveying line is provided with a makeshift for its lifting.

[0035] In this embodiment, the industrial robot includes a base 22, on which a six-axis serial robot arm 23 is installed. The six-axis serial robot arm is a six-axis serial industrial robot. A tightening wrench 24 is installed on the six-axis serial robot arm. The tightening wrench is an existing Atlas tightening wrench. A fixing frame is provided at the end of the six-axis serial robot arm, and the Atlas tightening wrench is installed on the fixing frame. A locking gun head 25 is provided on the end of the Atlas tightening wrench. A supporting platform 26 is provided on the side of the base, and a plurality of sleeve grooves 27 are provided on the supporting platform. A sleeve 28 is provided in the sleeve groove. The sleeve has various specifications according to needs. This device adopts three types, namely M24 sleeve, M17 sleeve, and T40 sleeve. Pneumatic clamps 30 are respectively provided on the supporting platform corresponding to each sleeve. An existing visual system 31 is provided on the six-axis serial robot arm next to the tightening wrench, and sensors are installed in the sleeve grooves to confirm whether the sleeve is grasped.

[0036] In this embodiment, the visual system uses Cognex DataMan370, the shortest exposure time is 15 μs, the maximum acquisition rate reaches 80 Hz, the liquid lens is 16 mm, and the operating temperature is 0 ℃–57 ℃; use the visual system to accurately locate the bolt position and transmit the bolt position information to the six-axis serial robot arm. The screwdriver bit replacement tool is used on the tightening wrench to complete the replacement of the tightening gun screwdriver bit. The screwdriver bit replacement tool is a square connecting shaft. The outer circumference of the square connecting shaft is provided with an existing spring and ball combination, that is, a ball hole for the ball to slide is provided on the outer wall of the square connecting shaft. The outer end of the ball hole passes through the square connecting shaft. At the same time, the diameter of the outer end is smaller than the ball diameter to prevent the ball from falling out. At the same time, a spring for supporting the ball is provided in the ball hole, and the screwdriver bit replacement tool is provided with an air duct connected to the ball hole, and the air duct is connected to an external air source. The screwdriver bit is provided with a tooling groove 29 that cooperates with the square connecting shaft, and a groove 32 is provided on the inner wall of the tooling groove corresponding to the exposed part of the ball. The connection is achieved by the snap connection of the ball, which meets the requirements of automated tightening of bolts of various specifications of seats; a protective cover for protecting the visual system is installed on the fixing frame.

[0037] In this embodiment, the locking torque setting of the T40 sleeve lock seat back linkage mechanism and the left and right side plates is: 42.5Nm-57.5 Nm; the locking torque setting of the M24 sleeve lock front pipe rack and the left and right side plates is: 22.5Nm-30.5 Nm; the locking torque setting of the M17 sleeve lock back linkage mechanism upper safety fixed seat is: 25.5Nm-34.5 Nm.

[0038] In this embodiment, a quick-opening mechanism 36 is installed next to the jacking mechanism in the middle position on the conveying assembly line. The quick-opening mechanism includes a quick-opening fixed frame 37. A horizontal swing arm 38 is rotatably connected to the quick-opening fixed frame. One end of the horizontal swing arm is rotatably connected to the quick-opening fixed frame through a rotating shaft 33. A gear is synchronously rotatably connected to the rotating shaft of the horizontal swing arm. A rack that is slidably engaged with the gear is installed on the quick-opening fixed frame. A telescopic cylinder 39 for driving the rack to move is provided on the quick-opening fixed frame; the rack is moved by the movement of the telescopic end of the telescopic cylinder, and then the gear is driven to rotate, and finally the rotation of the horizontal swing arm is realized. The length of the rack is controlled to control the rotation angle of the horizontal swing arm. This device adopts a 90-degree rotation, and the end of the horizontal swing arm is pressed against the positioning column 40 on the tooling plate, thereby further realizing the station fixation of the tooling plate. At the same time, the telescopic cylinder is controlled by a foot switch.

[0039] In this embodiment, the shaking detection device includes a detection device 41 and a limiting device 42. The detection device is installed next to the conveying line through a frame corresponding to the chair back. The limiting device is located below the detection device. The detection device includes a horizontal servo module 43 corresponding to the seat frame. A vertical servo module 44 is slidably connected to the horizontal servo module. A telescopic servo module 45 is installed on the vertical servo module. The telescopic end of the telescopic servo module corresponds to the chair back of the seat frame. A data acquisition device 46 is installed on the telescopic end of the telescopic servo module. The limiting device includes a horizontal cylinder 47. The telescopic end of the horizontal cylinder faces the seat frame. A limiting plate 48 for abutting and fixing the seat frame is installed on the telescopic end of the horizontal cylinder.

[0040] In this embodiment, the horizontal servo module includes a horizontal seat plate 49 arranged facing the seat frame, the horizontal seat plate is installed on the frame, and the horizontal seat plate is rotatably connected to a horizontal screw mechanism 50. The vertical servo module includes a vertical seat plate 51, and the vertical seat plate is installed on the horizontal screw mechanism and slides horizontally with the rotation of the horizontal screw. The vertical seat plate is rotatably connected to a vertical screw mechanism 52. The telescopic servo module includes a U-shaped mounting plate 53, and the two feet of the U-shaped mounting plate are fixed toward the seat. The connecting plate part of the U-shaped mounting plate is installed on the vertical screw mechanism and slides horizontally with the rotation of the vertical screw. The U-shaped mounting plate includes two parallel feet, and the same ends of the two feet are connected by a connecting part. The two foot ends of the U-shaped mounting plate are rotatably connected. A cylinder fixing block 54 is connected to the cylinder fixing block. An electric cylinder 55 is mounted on the U-shaped mounting plate. The telescopic end of the electric cylinder extends through the cylinder fixing block. A data acquisition device is mounted on the extended end. The electric cylinder serves as a servo control system, and its displacement is acquired by a built-in encoder system. The electric cylinder uses a servo motor to drive the rotation of a turbine and worm shaft, which is converted into linear motion by a nut, achieving reciprocating motion. This is used to precisely control the push-pull, close, and lift / lowering of various devices. The maximum load of the electric cylinder is ±500N, the stroke is 0-150mm, and the maximum speed is 400mm / min. This device utilizes an existing three-point combiner 56 to achieve optimal air supply to the cylinder. The three-point combiner consists of an oil filter, a pressure regulating valve, and an oil mist collector, hence the name "triple combination." The pressure regulating valve stabilizes the air supply, maintaining a constant pressure and minimizing damage to hardware such as valves and actuators caused by sudden changes in air pressure. The filter cleans the air supply by removing moisture from the compressed air, preventing it from entering the device. The oil mist device can lubricate the moving parts of the machine body, and can lubricate the parts that are inconvenient to add lubricating oil, greatly extending the service life of the machine body.

[0041] In this embodiment, the rotational connection method for the cylinder fixing block is conventional. Expansion sleeves 57 are used on both sides of the cylinder fixing block to achieve a keyless connection to the U-shaped mounting plate. High-strength tension bolts generate a significant clamping force between the inner ring and the shaft, and between the outer ring and the wheel hub, achieving a keyless connection of the cylinder fixing block. When the mechanism is under load, the combined pressure and friction between the expansion sleeves, the mechanical component, and the shaft transmit torque, axial force, or a combination of the two, allowing the electric cylinder to rotate through an angle of 0 to 120°. Other rotational connection methods are also acceptable, as long as they enable rotation. The expansion sleeve is a conventional keyless connection device. Its principle and purpose is to generate a significant clamping force between the inner ring and the shaft, and between the outer ring and the wheel hub, achieving a keyless connection between the mechanical component and the shaft, through the action of high-strength tension bolts. When under load, the combined pressure and friction between the expansion sleeves, the mechanical component, and the shaft transmit torque, axial force, or a combination of the two. The main advantages of expansion sleeve connection are as follows: high centering accuracy; easy installation / adjustment / disassembly; high strength, stable and reliable connection; can protect equipment from damage when overloaded, and is particularly suitable for transmitting heavy loads.

[0042] In this embodiment, auxiliary guide rods 58 are symmetrically slidably connected to the cylinder fixing block on both sides of the electric cylinder. The auxiliary guide rods are connected to the data acquisition device. The data acquisition device includes an L-shaped connecting plate 59, which is fixed to the telescopic end of the electric cylinder and the auxiliary guide rod through one plate body of the L-shaped connecting plate, and the end of the other plate body faces the seat frame. A loading mechanism is installed on the plate body with the end facing the seat frame. The loading mechanism includes a loading top cylinder 60, and a loading head 61 is installed on the telescopic end of the loading top cylinder. An encoder 62 is provided on the plate body with the end facing the seat frame corresponding to the loading head for collecting force data.

[0043] In this embodiment, for reasonable design, an existing force sensor 63 is installed between the telescopic end of the electric cylinder and the L-shaped connecting plate. The telescopic end of the electric cylinder is fixed to one side of the force sensor, and the other side of the force sensor is connected to the L-shaped connecting plate. At the same time, the corresponding end of the auxiliary guide rod is fixed to the force sensor.

[0044] In this embodiment, the force sensor includes left and right partitions 67, and a force sensor 68 is installed between the two partitions, wherein the left partition is connected to the telescopic end of the electric cylinder, and the right partition is connected to the L-shaped connecting plate. Two auxiliary guide rods pass through the left partition and are fixedly connected to the right partition. A guide seat 69 is provided on the left partition corresponding to the auxiliary guide rod.

[0045] In this embodiment, the horizontal screw mechanism includes a horizontally arranged horizontal screw driven by a stepping motor, the horizontal screw is rotatably connected to the horizontal seat plate, the horizontal screw is rotatably connected to a horizontal nut that slides as the screw rotates, and the horizontal nut is fixedly connected to the vertical seat plate. The vertical screw mechanism includes a vertically arranged vertical screw driven by a stepping motor, the vertical screw is rotatably connected to the vertical seat plate, the vertical screw is rotatably connected to a vertical nut that slides as the screw rotates, and the vertical nut is fixedly connected to the U-shaped mounting plate.

[0046] In this embodiment, in order to improve the operational stability, a horizontal auxiliary guide device 64 is provided on the horizontal seat plate beside the horizontal screw, and the horizontal auxiliary guide device includes a horizontal slide rail, on which a horizontal slider is slidably connected, the horizontal slide rail is installed on the horizontal seat plate, and the horizontal slider is fixed on the vertical seat plate, and a vertical auxiliary guide device 65 is provided on the vertical seat plate beside the vertical screw, and the vertical auxiliary guide device includes a vertical slide rail, on which a vertical slider is slidably connected, the vertical slide rail is installed on the vertical seat plate, and the vertical slider is fixed on the U-shaped mounting plate, and a number of distance sensors for recognizing the displacement transformation amount are installed on both the horizontal seat plate and the vertical seat plate.

[0047] In this embodiment, the lifting mechanism includes a vertically arranged lifting cylinder, the telescopic end of the lifting cylinder is upward, a lifting plate is installed on the telescopic end of the lifting cylinder, and a plurality of positioning blocks for fixing the position of the tooling plate are installed on the lifting plate.

[0048] A method for manufacturing a lightweight seat:

[0049] First, the seat frame is placed on the tooling plate. When the tooling plate passes the first lifting mechanism of the assembly line, the cylinder of the lifting mechanism raises and lowers the tooling plate, and the industrial robot activates the tightening wrench to lock the seat. After the locking is completed, the industrial robot resets, the lifting mechanism lowers, and the tooling plate continues to move along the assembly line.

[0050] Then, when the tooling plate passes through the jacking mechanism in the middle of the assembly line, the tooling plate is limited by the mechanical valve, the rear end of the seat support frame assembly is inserted into the rear side of the seat frame, and the front end is fixed in the positioning hole on the front side of the seat frame, and the buckle is knocked in with a rubber hammer; the telescopic rod of the top cylinder of the foot pedal switch quick-opening mechanism is kicked back to its position, driving the outer lock buckle of the linkage mechanism to rotate. When the lock actuates the handle, the tooling plate buckle can be unlocked, so that the seat on the tooling plate pallet is rotated, the operator's foot leaves the foot pedal switch, and the quick-opening mechanism returns to its position; then take the back support frame assembly and insert it into the back frame frame, take the buckle hook and buckle it into the positioning holes of the pipe racks on both sides of the back frame frame in sequence, and then fix the other end of the buckle hook to the hose on the same side of the back support frame assembly, and kick the foot pedal switch to rotate the seat on the tooling plate pallet 180 degrees;

[0051] When the tooling plate passes through the last lifting mechanism of the assembly line, the lifting mechanism cylinder lifts the tooling plate; after the limit plate on the cylinder of the limit device is pushed out, the upper layer of the tooling plate is fixed horizontally; the horizontal servo module starts the stepper motor to move the vertical servo module laterally through the screw, and the vertical servo module starts the stepper motor to move the U-shaped mounting plate longitudinally through the screw, so that the data acquisition device can be accurately moved to the specified position. The data acquisition device is inserted into the seat frame, and the electric cylinder is started to precisely push and pull the data acquisition device to achieve forward and reverse loading. Finally, the data acquisition device converts the data output. After the inspection is completed, each mechanism returns to its position, the lifting mechanism descends, and the seat frame moves to the next workstation.

[0052] Unless otherwise stated, for any of the technical solutions disclosed in the present invention, if a numerical range is disclosed, the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely a numerical range that is representative or has a more obvious technical effect among many feasible numerical values. Due to the large number of numerical values, it is impossible to enumerate them exhaustively. Therefore, the present invention discloses some numerical values ​​to illustrate the technical solutions of the present invention. Moreover, the numerical values ​​listed above should not be construed as limiting the scope of protection of the present invention.

[0053] If words such as "first" and "second" are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of description to distinguish between components. Unless otherwise stated, the above words have no special meaning.

[0054] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by integral molding using a casting process) (except where it is obviously not possible to use an integrated molding process).

[0055] In addition, the orientations or positional relationships indicated by terms such as "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" used in any of the technical solutions disclosed in the above invention are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this patent, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this patent. Unless otherwise stated, the terms used to indicate shapes used in any of the technical solutions disclosed in the above invention include shapes that are approximate, similar, or close to them.

[0056] Any component provided by the present invention may be assembled from multiple separate components, or may be a separate component manufactured by an integral molding process.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for protection of the present invention.

Claims

1. A lightweight seat, characterized in that: The seat frame comprises a seat frame and a back frame, the back frame is screwed to the seat frame, a seat support mounting groove is provided on the seat surface of the seat frame, a back support mounting groove is provided on the back support surface of the back frame, a seat support frame wire assembly is fixedly connected to the seat support mounting groove, and a back support frame wire assembly is fixedly connected to the back support mounting groove; The invention comprises a conveyor line, wherein a tooling plate is provided on the conveyor line and is driven to slide by the conveyor line. At least three lifting mechanisms for lifting the tooling plate are provided on the conveyor line from front to back along the conveying direction. A shaking detection device is provided next to the conveyor line corresponding to the last lifting mechanism along the conveying direction. The sway detection device includes a detection device, which is installed next to the conveyor line via a frame corresponding to the seat back. The detection device includes a horizontal servo module corresponding to the seat frame, a vertical servo module slidingly connected to the horizontal servo module, a telescopic servo module installed on the vertical servo module, the telescopic end of the telescopic servo module corresponding to the seat back of the seat frame, and a data acquisition device installed on the telescopic end of the telescopic servo module; The horizontal servo module includes a horizontal seat plate arranged facing the seat frame, the horizontal seat plate is mounted on the frame, the horizontal seat plate is rotatably connected to a horizontal screw mechanism, the vertical servo module includes a vertical seat plate, the vertical seat plate is mounted on the horizontal screw mechanism and slides horizontally with the rotation of the horizontal screw, the vertical seat plate is rotatably connected to the vertical screw mechanism, the telescopic servo module includes a U-shaped mounting plate, the two feet of the U-shaped mounting plate are fixed toward the seat, the connecting plate portion of the U-shaped mounting plate is mounted on the vertical screw mechanism and slides horizontally with the rotation of the vertical screw, a cylinder fixing block is rotatably connected between the end portions of the two feet of the U-shaped mounting plate, an electric cylinder is mounted on the cylinder fixing block in the U-shaped mounting plate, the telescopic end of the electric cylinder passes through the cylinder fixing block and extends out, and a data acquisition device is mounted on the protruding end; Auxiliary guide rods are symmetrically slidably connected to the cylinder fixing block on both sides of the electric cylinder. The auxiliary guide rods are connected to the data acquisition device. The data acquisition device includes an L-shaped connecting plate, which is fixed to the telescopic end of the electric cylinder and the auxiliary guide rod through one plate of the L-shaped connecting plate, and the end of the other plate is facing the seat frame. A loading mechanism is installed on the plate with the end facing the seat frame. The loading mechanism includes a loading top cylinder, and a loading head is installed on the telescopic end of the loading top cylinder. An encoder is provided on the plate with the end facing the seat frame corresponding to the loading head.

2. The lightweight seat according to claim 1, characterized in that: The back support frame wire assembly includes several convex frame wires arranged at intervals from top to bottom and rubber hoses arranged symmetrically on the left and right. The middle parts of adjacent convex frame wires are connected by round tubes, and the ends of the convex frame wires are wound and fixed on the rubber hoses on the same side. Several hooks are installed on the left and right sides of the back support frame wire assembly from top to bottom, and the ends of the hooks are fixed on the back frame skeleton on the same side; the seat support frame wire assembly includes curved steel wires arranged horizontally from left to right, and adjacent curved steel wires are connected by plastic strips. Hooks are provided at both ends of the curved steel wire, and grooves that cooperate with the hooks are provided on the front and rear frames of the seat frame skeleton.

3. A lightweight seat production equipment, using the lightweight seat according to claim 2, characterized in that: A lightweight seat is installed on the tooling plate, and an industrial robot for tightening bolts between a seat frame and a back frame is provided next to the conveying line corresponding to the first lifting mechanism along the conveying direction.

4. The lightweight seat production equipment according to claim 3, characterized in that: The industrial robot includes a base, a six-axis serial robot arm is installed on the base, a tightening wrench is installed on the six-axis serial robot arm, a supporting platform is provided on the side of the base, a plurality of sleeve grooves are provided on the supporting platform, sleeves are provided in the sleeve grooves, and pneumatic clamps are respectively provided on the supporting platform corresponding to each sleeve.

5. The lightweight seat production equipment according to claim 4, characterized in that: A quick-opening mechanism is installed next to the lifting mechanism in the middle position of the conveying line, and the quick-opening mechanism includes a quick-opening fixed frame, and a horizontal swing arm is rotatably connected to the quick-opening fixed frame. One end of the horizontal swing arm is rotatably connected to the quick-opening fixed frame through a rotating shaft, and a gear is synchronously connected to the rotating shaft of the horizontal swing arm. A rack that is slidably connected to the gear is installed on the quick-opening fixed frame, and a telescopic cylinder for driving the rack to move is provided on the quick-opening fixed frame.

6. The lightweight seat production equipment according to claim 5, characterized in that: The shaking detection device also includes a limiting device, which is located below the detection device. The limiting device includes a horizontal cylinder, the telescopic end of the horizontal cylinder is facing the seat frame, and a limiting plate is installed on the telescopic end of the horizontal cylinder for abutting and fixing the seat frame.

7. The lightweight seat production equipment according to claim 6, characterized in that: The horizontal screw mechanism includes a horizontal screw arranged horizontally and driven by a stepping motor, the horizontal screw is rotatably connected to a horizontal seat plate, the horizontal screw is rotatably connected to a horizontal nut that slides as the screw rotates, and the horizontal nut is fixedly connected to the vertical seat plate. The vertical screw mechanism includes a vertical screw arranged vertically and driven by a stepping motor, the vertical screw is rotatably connected to a vertical seat plate, the vertical screw is rotatably connected to a vertical nut that slides as the screw rotates, and the vertical nut is fixedly connected to the U-shaped mounting plate.

8. The lightweight seat production equipment according to claim 7, characterized in that: The jacking mechanism includes a vertically arranged lifting cylinder, the telescopic end of the lifting cylinder is upward, a lifting plate is installed on the telescopic end of the lifting cylinder, and a plurality of positioning blocks for fixing the position of the tooling plate are installed on the lifting plate.

9. A method for manufacturing a lightweight seat, using the lightweight seat production equipment according to claim 8, characterized in that: First, the seat frame is placed on the tooling plate. When the tooling plate passes the first lifting mechanism of the assembly line, the cylinder of the lifting mechanism raises and lowers the tooling plate, and the industrial robot activates the tightening wrench to lock the seat. After the locking is completed, the industrial robot resets, the lifting mechanism lowers, and the tooling plate continues to move along the assembly line. Then, when the tooling plate passes through the jacking mechanism in the middle of the assembly line, the tooling plate is limited by the mechanical valve, the rear end of the seat support frame assembly is inserted into the rear side of the seat frame, and the front end is fixed in the positioning hole on the front side of the seat frame, and the buckle is knocked in with a rubber hammer; the telescopic rod of the top cylinder of the foot pedal switch quick-opening mechanism is kicked back to its position, driving the outer lock buckle of the linkage mechanism to rotate. When the lock actuates the handle, the tooling plate buckle can be unlocked, so that the seat on the tooling plate pallet is rotated, the operator's foot leaves the foot pedal switch, and the quick-opening mechanism returns to its position; then take the back support frame assembly and insert it into the back frame frame, take the buckle hook and buckle it into the positioning holes of the pipe racks on both sides of the back frame frame in sequence, and then fix the other end of the buckle hook to the hose on the same side of the back support frame assembly, and kick the foot pedal switch to rotate the seat on the tooling plate pallet 180 degrees; When the tooling plate passes through the last lifting mechanism of the assembly line, the lifting mechanism cylinder lifts the tooling plate; after the limit plate on the cylinder of the limit device is pushed out, the upper layer of the tooling plate is fixed horizontally; the horizontal servo module starts the stepper motor to move the vertical servo module laterally through the screw, and the vertical servo module starts the stepper motor to move the U-shaped mounting plate longitudinally through the screw, so that the data acquisition device can be accurately moved to the specified position. The data acquisition device is inserted into the seat frame, and the electric cylinder is started to precisely push and pull the data acquisition device to achieve forward and reverse loading. Finally, the data acquisition device converts the data output. After the inspection is completed, each mechanism returns to its position, the lifting mechanism descends, and the seat frame moves to the next workstation.

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