A bicycle rack assembly apparatus

Abstract

A bicycle rack splicing device for splicing a main support rod, two side support rods and an upper support into a complete bicycle rack, comprising a main support rod moving and fixing device, a rack two, a side support rod blanking device, a side support rod fixing device, an upper support blanking device and a control end; the main support rod moving and fixing device is used for moving and fixing clamping the main support rod to be spliced; the rack two is used for bearing the side support rod blanking device, the side support rod fixing device and the upper support blanking device; the upper support blanking device is arranged directly above the main support rod fixed by the clamping mechanism; the side support rod blanking device is provided with two groups and is symmetrically arranged on the left and right sides of the main support rod fixed by the clamping mechanism; the side support rod fixing device is provided with two groups and is symmetrically arranged on the front and back sides of the main support rod fixed by the clamping mechanism; the main support rod, the side support rod and the upper support are only needed to be respectively placed in the corresponding storage, so that the flow automatic splicing of the bicycle rack can be realized, manpower is saved and efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of bicycle rack assembly technology, and in particular to a bicycle rack splicing device. Background Technology

[0002] A bicycle rack is an add-on component that provides cargo carrying functionality for bicycles, typically installed above the rear wheel. Current bicycle racks are formed by welding multiple support rods and a top bracket together. Before welding, the support rods and top bracket need to be assembled. There are two common assembly methods: one is manual assembly. This manual assembly cannot guarantee precision, and the finished bicycle rack may have slight warping, resulting in low quality, low yield, and high labor costs, leading to low efficiency. The second method uses tooling fixtures. The support rods and top bracket are placed manually onto the corresponding fixtures, which then assemble them. This method still requires manual assistance, cannot achieve continuous production, and is also inefficient. Summary of the Invention

[0003] To address the above problems, this invention proposes a bicycle rack assembly device, the technical solution of which is as follows:

[0004] A bicycle rack assembly device is used to assemble a main support rod, two side support rods, and an upper bracket into a complete bicycle rack. It includes a main support rod moving and fixing device, a second frame, a side support rod unloading device, a side support rod fixing device, an upper bracket unloading device, and a control terminal. The main support rod moving and fixing device includes a first frame, a conveying mechanism, a limiting slide groove, a clamping mechanism, a servo screw, a first slider, a second electric cylinder, and a lever. The servo screw runs forward and backward and is horizontally mounted on the first frame. The first slider is slidably mounted on the servo screw. The second electric cylinder... The electric cylinder is fixedly installed on the first slider, and the extension and retraction direction of the second electric cylinder is perpendicular to the direction of the first slider. The lever is fixedly installed on the extension and retraction end of the second electric cylinder. The conveying mechanism and the limiting slide are colinearly installed on the first frame and are both parallel to the servo screw. The conveying mechanism corresponds to the front part of the servo screw, and the limiting slide corresponds to the rear part of the servo screw. The rear end of the conveying mechanism is connected to the front end of the limiting slide. The main support rod slides sequentially in the conveying mechanism and the limiting slide. The clamping mechanism is set at the front end of the limiting slide and is used to fix and clamp the main support rod to be spliced.

[0005] The second frame is used to support the side support rod feeding device, the side support rod fixing device, and the upper support feeding device; the upper support feeding device is located directly above the main support rod fixed by the clamping mechanism; there are two sets of the side support rod feeding devices, symmetrically arranged on the left and right sides of the main support rod fixed by the clamping mechanism; there are two sets of the side support rod fixing devices, symmetrically arranged on the front and rear sides of the main support rod fixed by the clamping mechanism.

[0006] The control terminal is used to control the operation of the entire bicycle rack assembly equipment.

[0007] Furthermore, the conveying mechanism includes a support frame, a conveyor belt, conveyor rollers, a transmission gear, and a motor; the support frame is horizontally fixedly installed on the frame, with its rear end connected to the front end of the limiting slide groove; at least one conveyor roller is vertically rotatably installed at both the front and rear ends of the left and right sides of the support frame, and the conveyor rollers on the same side are synchronously connected by the conveyor belt; the motor is fixedly installed on the support frame, and its output end is coaxially fixedly connected to one of the conveyor rollers; two conveyor rollers located at the front end or rear end of the support frame are each coaxially fixedly installed with a transmission gear, and the two transmission gears mesh with each other.

[0008] Furthermore, the clamping mechanism includes an electric cylinder and clamping blocks; there are two electric cylinders, which are symmetrically fixedly installed on the left and right sides of the limiting slide groove; the extension and retraction direction of each electric cylinder is perpendicular to the direction of the limiting slide groove, and a clamping block is fixedly installed at the extension and retraction end of each electric cylinder. The two clamping blocks are symmetrically arranged and are respectively slidably installed on the left and right side walls of the limiting slide groove. The two clamping blocks work together to clamp and fix the main support rod.

[0009] Furthermore, each set of side support rod feeding devices includes a feeding support frame, a rotating dial wheel, and a feeding motor; the feeding support frame is located on one of the left or right sides of the main support rod fixed by the clamping mechanism and is fixedly installed on the second frame to support the side support rod to be spliced; the rotating dial wheel is located on the inner upper side of the feeding support frame and is rotatably installed on the second frame to move the side support rod inward; the feeding motor is fixedly installed on the second frame, and its output end is coaxially fixedly connected to the rotating dial wheel.

[0010] Furthermore, each set of side support rod fixing devices includes a vertical lead screw, a second slider, a sliding frame, a double-acting lead screw, a third slider, a sliding mechanism, a clamping and rotating mechanism, and a transmission assembly. Two vertical lead screws are provided, symmetrically and vertically installed on the left and right sides of the frame. The transmission assembly is mounted on the frame and is used to drive the two vertical lead screws to rotate synchronously. A second slider is slidably mounted on each vertical lead screw, and a sliding rod running forward and backward is fixedly mounted on each second slider. The sliding frame is horizontally positioned, with its left and right ends slidably mounted on the sliding rods on both sides. The sliding mechanism is mounted on the two second sliders and is used to drive the sliding frame to slide on the sliding rods. The double-acting lead screw runs left and right and is horizontally mounted on the sliding frame. Two third sliders are provided, slidably mounted on the left and right sides of the double-acting lead screw and simultaneously slidably mounted on the sliding frame. Each third slider is equipped with a clamping and rotating mechanism for fixing the side support rod and driving it to rotate.

[0011] Furthermore, the sliding mechanism includes a second motor, a second transmission gear, and a transmission shaft; racks running forward and backward are fixedly installed on both the left and right ends of the sliding frame; each rack meshes with a second transmission gear, and the two second transmission gears are coaxially fixedly installed on the transmission shaft; the transmission shaft is horizontally arranged, and its left and right ends are respectively rotatably installed on two second sliders; the second motor is fixedly installed on one of the second sliders, and its output end is coaxially fixedly connected to the transmission shaft.

[0012] Furthermore, the clamping and rotating mechanism includes a third motor, a rotating shaft, a fixed plate, a movable plate, and a third electric cylinder; the third motor is fixedly mounted on the third slider, and its output end is coaxially and fixedly connected to the rotating shaft; the rotating shaft is horizontally mounted on the third slider and runs back and forth; the fixed plate is horizontally mounted, with its outer end fixedly mounted on the rotating shaft and its inner end pointing towards the inside of the second frame; the third electric cylinder is fixedly mounted on the fixed plate, and its extension and retraction direction is perpendicular to the fixed plate; the movable plate is fixedly mounted on the extension and retraction end of the third electric cylinder; the movable plate and the fixed plate are parallel to each other and work together to clamp the branch of the fixed side support rod.

[0013] Furthermore, the transmission assembly includes a motor, a transmission wheel, and a transmission belt; a transmission wheel is coaxially fixedly installed at the bottom end of each vertical lead screw, and the two transmission wheels are synchronously connected by a transmission belt; the motor is fixedly installed on the frame, and its output end is coaxially fixedly connected to one of the transmission wheels.

[0014] Furthermore, the upper support unloading device includes a storage bin and an electric push rod; the storage bin is located directly above the main support rod fixed by the clamping mechanism and is fixedly installed on the second frame; the storage bin is provided with a vertical limiting groove inside, and several upper supports are stored in the storage bin in a stacked manner along the vertical limiting groove; the electric push rod is provided in at least one pair, and each pair of electric push rods is symmetrically fixedly installed on the front and rear or left and right sides of the bottom end of the storage bin, and the telescopic end of the electric push rod intermittently contacts the upper support to be spliced.

[0015] Because the present invention adopts the above-described technical solution, the present invention has the following advantages:

[0016] This invention, through the coordinated design of the main support moving and fixing device, the side support rod unloading device, the side support rod fixing device, and the upper support unloading device, allows for automated assembly of bicycle racks simply by placing the main support rod, the side support rod, and the upper support rod in their respective storage locations. This saves manpower and improves efficiency. Attached Figure Description

[0017] Figure 1-3 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 4-5 This is a schematic diagram of the assembly structure of the main support rod moving and fixing device of the present invention.

[0019] Figure 6 This is a schematic diagram of the assembly structure of the conveying mechanism of the present invention.

[0020] Figure 7 This is a schematic diagram of the support frame in the conveying mechanism of the present invention.

[0021] Figure 8 This is a schematic diagram of the assembly structure of the limiting slide of the present invention.

[0022] Figure 9 This is a schematic diagram of the assembly structure of the clamping mechanism of the present invention.

[0023] Figure 10 This is a schematic diagram of the assembly structure of the servo lead screw, slider one, electric cylinder two, and dial block of the present invention.

[0024] Figure 11 This is a schematic diagram of the assembly structure of the side support rod feeding device, the side support rod fixing device, and the upper bracket feeding device of the present invention.

[0025] Figure 12 This is a schematic diagram of the assembly structure of the side support rod feeding device and the side support rod fixing device of the present invention.

[0026] Figure 13 This is a schematic diagram of the assembly structure of the side support rod feeding device of the present invention.

[0027] Figure 14 This is a schematic diagram of the assembly structure of the side support rod fixing device of the present invention.

[0028] Figure 15 This is an exploded structural diagram of the side support rod fixing device of the present invention.

[0029] Figure 16 This is a schematic diagram of the assembly structure of the clamping and rotating mechanism of the present invention.

[0030] Figure 17 This is a schematic diagram of the structure of the second frame of the present invention.

[0031] Figure 18 This is a schematic diagram of the assembly structure of the upper support unloading device for the upper support of the present invention.

[0032] Figure 19 This is a schematic diagram of the assembly structure of the upper support unloading device of the present invention without supporting the upper support.

[0033] Figure 20 This is a schematic diagram of the assembled bicycle rack according to the present invention.

[0034] Figure 21 This is a schematic diagram showing the connection between the control terminal and electrical components of the present invention.

[0035] Icon labels:

[0036] 1-Main support rod moving and fixing device;

[0037] 101-Frame 1; 102-Transmission mechanism (1021-Support frame; 1022-Conveyor belt; 1023-Drive roller; 1024-Drive gear 1; 1025-Motor 1); 103-Limiting slide; 104-Clamping mechanism (1041-Electric cylinder 1; 1042-Clamping block); 105-Servo screw; 106-Slider 1; 107-Electric cylinder 2; 108-Pulley block;

[0038] 2-Rack Two;

[0039] 3-Side support rod feeding device;

[0040] 301 - Feeding support frame; 302 - Rotating dial; 303 - Feeding motor;

[0041] 4-Side support rod fixing device;

[0042] 401-Vertical lead screw; 402-Slider II (4021-Sliding rod); 403-Sliding frame (4031-Rack); 404-Double lead screw; 405-Slider III; 406-Sliding mechanism (4061-Motor II; 4062-Transmission gear II; 4063-Transmission shaft); 407-Clamping and rotating mechanism (4071-Motor III; 4072-Rotating shaft; 4073-Fixed plate; 4074-Moving plate; 4075-Electric cylinder III); 408-Transmission assembly (4081-Motor IV; 4082-Transmission wheel; 4083-Transmission belt);

[0043] 5- Upper support unloading device;

[0044] 501 - Storage bin; 502 - Electric actuator;

[0045] 6-Control terminal;

[0046] 7-Bicycle rack;

[0047] 701-Main support rod; 702-Side support rod; 703-Upper bracket. Detailed Implementation

[0048] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention; however, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0049] In the description of this invention, it should be noted that the terms "upper", "lower", "in", "out", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0050] Example:

[0051] This embodiment is used to assemble a main support rod 701, two side support rods 702, and an upper bracket 703 into a complete bicycle rack 7. The assembled product is as follows: Figure 20 As shown.

[0052] like Figure 1-3 As shown, a bicycle rack assembly device includes a main support rod moving and fixing device 1, a second frame 2, a side support rod unloading device 3, a side support rod fixing device 4, an upper support unloading device 5, and a control terminal 6. The second frame 2 is used to support the side support rod unloading device 3, the side support rod fixing device 4, and the upper support unloading device 5. The upper support unloading device 5 is located directly above the main support rod 701 fixed by the clamping mechanism 104. There are two sets of side support rod unloading devices 3, symmetrically arranged on the left and right sides of the main support rod 701 fixed by the clamping mechanism 104. There are two sets of side support rod fixing devices 4, symmetrically arranged on the front and rear sides of the main support rod 701 fixed by the clamping mechanism 104.

[0053] like Figure 4-10 As shown, the main support rod moving and fixing device 1 includes a frame 101, a transmission mechanism 102, a limiting slide 103, a clamping mechanism 104, a servo screw 105, a slider 106, an electric cylinder 107, and a lever 108; the frame 101 runs back and forth and passes through the frame 2; the servo screw 105 runs back and forth and is horizontally installed on the frame 101; the slider 106 is slidably installed on the servo screw 105; the electric cylinder 107 is fixedly installed on the slider 106, and the extension and retraction direction of the electric cylinder 107 is perpendicular to the direction of the slider 106; the lever 108 is fixedly installed on the extension and retraction end of the electric cylinder 107.

[0054] The conveying mechanism 102 includes a support frame 1021, a conveyor belt 1022, a conveyor roller 1023, a transmission gear 1024, and a motor 1025. The support frame 1021 and the limiting slide 103 are horizontally and collinearly fixed on the frame 101, and are both parallel to the servo screw 105. The support frame 1021 corresponds to the front part of the servo screw 105, and the limiting slide 103 corresponds to the rear part of the servo screw 105. The rear end of the support frame 1021 is connected to the front end of the limiting slide 103. A conveyor roller 1023 is vertically and rotatably mounted at both the front and rear ends of the left and right sides of the frame 1021. The conveyor rollers 1023 on the same side are synchronously connected by the conveyor belt 1022. The motor 1025 is fixedly mounted on the support frame 1021, and its output end is coaxially and fixedly connected to one of the front conveyor rollers 1023. The two conveyor rollers 1023 at the front end of the support frame 1021 are each coaxially and fixedly mounted with a transmission gear 1024, and the two transmission gears 1024 mesh with each other.

[0055] The clamping mechanism 104 is located at the front end of the limiting slide groove 103, and includes an electric cylinder 1041 and a clamping block 1042. There are two electric cylinders 1041, which are symmetrically fixedly installed on the left and right sides of the limiting slide groove 103. The extension and retraction direction of each electric cylinder 1041 is perpendicular to the direction of the limiting slide groove 103. A clamping block 1042 is fixedly installed at the extension and retraction end of each electric cylinder 1041. The two clamping blocks 1042 are symmetrically arranged and are respectively slidably installed on the left and right side walls of the limiting slide groove 103. The two clamping blocks 1042 work together to clamp and fix the main support rod 701.

[0056] Specifically, when the main support rod 701 is being loaded, it is placed vertically between the two conveyor belts 1022. The motor 1025 is started, which drives the transmission gear 1024 to rotate. The transmission gear 1024 drives the conveyor belt 1022 to move through the conveyor roller 1023. The two conveyor belts 1022 work together to move the main support rod 701 backward. When the main support rod 701 moves to the rear of the conveyor belt 1022, the servo screw 105 is started, which drives the slider 106 to move. When the slider 106 moves to the main support rod 701, the electric cylinder 107 is started, and its telescopic end extends. The lever 108 contacts the main support rod 701. The slider 106 moves backward, and the lever 108 drives the main support rod 106 to move into the front end of the limiting slide groove 103. The two electric cylinders 1041 are started, which drives the two clamping blocks 1042 to slide inward, thereby clamping and fixing the main support rod 701, ready for splicing and spot welding.

[0057] After splicing and spot welding are completed, the two electric cylinders 1041 are started again, driving the two clamping blocks 1042 to retract and release the main support rod 701. The servo screw 105 is started, and the slider 106 continues to drive the toggle block 108 to move backward. The toggle block 108 moves the spot-welded bicycle rack 7 to the rear end of the limit slide groove 103, and finally it is removed manually.

[0058] like Figure 11-13 As shown, each set of side support rod feeding devices 3 includes a feeding support frame 301, a rotating dial 302, and a feeding motor 303. The feeding support frame 301 is located on one side of the main support rod 701 fixed by the clamping mechanism 104 and is fixedly installed on the second frame 2. The outer end of the feeding support frame 301 is inclined to facilitate the storage of the side support rod 702 to be spliced. The rotating dial 302 is located above the inner end of the feeding support frame 301 and is rotatably installed on the second frame 2 for moving the side support rod 702 inward. The feeding motor 303 is fixedly installed on the second frame 2, and its output end is coaxially fixedly connected to the rotating dial 302.

[0059] Specifically, when the side support rod 702 is loading material, the unloading motor 303 is started, which drives the rotating wheel 302 to rotate. During the rotation, the teeth of the rotating wheel 302 push the side support rod 702 on the unloading support frame 301, causing the side support rod 702 to move continuously inward.

[0060] like Figure 11-12 As shown in Figures 14-16, each set of side support rod fixing devices 4 includes a vertical lead screw 401, a second slider 402, a sliding frame 403, a double lead screw 404, a third slider 405, a sliding mechanism 406, a clamping and rotating mechanism 407, and a transmission assembly 408. There are two vertical lead screws 401, which are symmetrically and vertically installed on the left and right sides of the frame 2. The transmission assembly 408 includes a motor 4081, a transmission wheel 4082, and a transmission belt 4083. A transmission wheel 4082 is coaxially fixedly installed at the bottom end of each vertical lead screw 401, and the two transmission wheels 4082 are synchronously connected by the transmission belt 4083. The motor 4081 is fixedly installed on the frame 2, and its output end is coaxially fixedly connected to one of the transmission wheels 4082.

[0061] Each vertical lead screw 401 has a sliding block 402 slidably mounted on it, and each sliding block 402 has a sliding rod 4021 fixedly mounted on it. The sliding frame 403 is horizontally arranged, with its left and right ends slidably mounted on the sliding rods 4021 on both sides. The sliding mechanism 406 includes a motor 4061, a transmission gear 4062, and a transmission shaft 4063. Each sliding frame 403 has a rack 4031 fixedly mounted on its left and right ends. Each rack 4031 meshes with a transmission gear 4062, and the two transmission gears 4062 are coaxially fixedly mounted on the transmission shaft 4063. The transmission shaft 4063 is horizontally arranged, with its left and right ends rotatably mounted on two sliding blocks 402. The motor 4061 is fixedly mounted on one of the sliding blocks 402, and its output end is coaxially fixedly connected to the transmission shaft 4063. The initial position of the sliding block 402 is the top of the vertical lead screw 401.

[0062] The bidirectional lead screw 404 runs left and right and is horizontally mounted on the sliding frame 403; there are two sliders 405, which are slidably mounted on the left and right sides of the bidirectional lead screw 404 respectively, and are also slidably mounted on the sliding frame 403; the initial position of the two sliders 405 is located in the middle of the bidirectional lead screw 404.

[0063] Each slider 3 405 is equipped with a clamping and rotating mechanism 407 for fixing the side support rod 702 and driving the side support rod 702 to rotate. This mechanism includes a motor 3 4071, a rotating shaft 4072, a fixed plate 4073, a movable plate 4074, and an electric cylinder 3 4075. The motor 3 4071 is fixedly mounted on the slider 3 405, and its output end is coaxially and fixedly connected to the rotating shaft 4072. The rotating shaft 4072 is horizontally mounted on the slider 3 405 and runs back and forth. The fixed plate 4073 is also horizontally mounted, with its outer end fixedly mounted on the rotating shaft 4072 and its inner end pointing towards the inside of the frame 2. The electric cylinder 3 4075 is fixedly mounted on the fixed plate 4073, and its extension and retraction direction is perpendicular to the fixed plate 4073. The movable plate 4074 is fixedly mounted on the extension and retraction end of the electric cylinder 3 4075. The movable plate 4074 and the fixed plate 4073 are parallel to each other and work together to clamp and fix the branch of the side support rod 702.

[0064] Specifically, when the side support rod 702 is spliced ​​onto the main support rod 701, the motor 4081 is started, which drives the two vertical lead screws 401 to rotate synchronously through the transmission wheel 4082 and the transmission belt 4083, thereby driving the two sliders 402 to descend synchronously, and thus driving the sliding frame 403 to descend to the set position; the bidirectional lead screw 404 is started, and the two sliders 405 move away from each other until the two sliders 405 move to the position of the innermost side support rod 702 on the two side unloading support frames 301, and the rotating shaft 4072 is aligned with one branch of the side support rod 702; the motor 4061 is started, driving the transmission shaft 4063 When the transmission shaft 4063 rotates, it drives the two transmission gears 4602 to rotate synchronously, thereby driving the two racks 4031 to move inward synchronously. This causes the sliding frame 403 to move inward along the sliding rod 4021, and the branch of the side support rod 702 enters between the fixed plate 4073 and the movable plate 4074. The electric cylinder 4075 is activated, and its telescopic end retracts, causing the movable plate 4074 to move closer to the fixed plate 4073. The movable plate 4074 and the fixed plate 4073 together clamp the branch of the side support rod 702. Both the front and rear sets of side support rod fixing devices 4 operate as described above, so that all branches of the two innermost side support rods 702 are fixed.

[0065] After the side support rod 702 is fixed, the double-acting screw 404 is started again, and the two sliders 405 on the same double-acting screw 404 move closer to each other, driving the side support rod 702 to move to the middle; the motor 4071 is started, driving the rotating shaft 4072 to rotate, thereby driving the side support rod 702 to rotate to the set angle, so that the side support rod 702 is spliced ​​together with the main support rod 701, waiting for spot welding;

[0066] After spot welding is completed, start electric cylinder three 4075, its telescopic end extends and drives the movable plate 4074 away from the fixed plate 4073, thereby releasing the branch of the side support rod 702; start motor two 4061, the transmission gear two 4062 rotates in the opposite direction, driving the two racks 4031 to move in the opposite direction, thereby driving the sliding frame 403 to move outward; start motor four 4081, through the transmission wheel 4082 and the transmission belt 4083, drive the two vertical lead screws 401 to rotate synchronously, the two sliders two 402 move upward synchronously, driving the sliding frame 403 to move upward and return to its original position.

[0067] like Figure 11 , 18As shown in -19, the upper support unloading device 5 includes a storage bin 501 and an electric push rod 502. The storage bin 501 is located directly above the main support rod 701 fixed by the clamping mechanism 104 and is fixedly installed on the frame 2. The storage bin 501 has a vertical limiting groove inside, and several upper supports 703 are stored in the storage bin 501 in a stacked manner along the vertical limiting groove. There are two electric push rods 502, which are symmetrically fixedly installed at the middle position of the front and rear sides of the bottom of the storage bin 501. The outermost end of the piston rod of the electric push rod 502 is sloping. When the piston rod extends, it can lift the upper support 703, so that the upper support 703 is raised a short distance, so that the lowermost upper support 703 can be smoothly moved out after being welded.

[0068] Specifically, when the piston rod of the electric push rod 502 extends, the piston rods of the two electric push rods 502 work together to support all the upper supports 703; after the main support rod 701 and the side support rod 702 are spliced, the two electric push rods 502 are started, the piston rods retract, and all the upper supports 703 slide downward along the vertical limiting groove. The lowermost upper support 703 contacts the top of the main support rod 701 and the side support rod 702, and the remaining upper supports 703 press on the lowermost upper support 703. The gravity of the remaining upper supports 703 presses the lowermost upper support 703 tightly, and then spot welding is performed.

[0069] After spot welding is completed, the two electric push rods 502 are activated, and the piston rods of the two electric push rods 502 extend. The upper bracket 703, which is adjacent to the bottom upper bracket 703, is blocked by the piston rods of the two electric push rods 502, and the spot-welded bicycle rack 7 is moved to the rear of the limiting slide 103.

[0070] like Figure 21 As shown, the control terminal 6 includes a main controller, a human-machine interface display screen, an information transmission module, a storage module, and a power supply module. The main controller is electrically connected to the human-machine interface display screen, the information transmission module, the storage module, the power supply module, as well as to motor 1025, electric cylinder 1041, servo screw 105, electric cylinder 107, feeding motor 303, bidirectional screw 404, motor 2 4061, motor 3 4071, electric cylinder 3 4075, motor 4 4081, and electric push rod 502. The main controller is used to control the operation of the entire bicycle rack assembly equipment. The human-machine interface display screen is used to set the working time and control the opening and closing of the equipment. The information transmission module is used for information transmission between the main controller and the main support rod moving and fixing device 1, the side support rod feeding device 3, the side support rod fixing device 4, and the upper bracket feeding device 5. The power supply module is used to provide a stable power supply to the control terminal 6. The storage module is used to store the operating information data of the entire bicycle rack assembly equipment.

[0071] The working steps of this embodiment are as follows:

[0072] Step 1: The operator places the main support rod 701 between the two conveyor belts 1022, places the side support rod 702 on the unloading support frame 301, and places the upper support 703 in the storage bin 501; then sets the working time.

[0073] Step 2: Start motor 1025 to transport the main support rod 701 to the last end of the conveyor belt 1022; start servo screw 105 and move block 108 to move the main support rod 701 to the front end of limit slide groove 103; start two electric cylinders 1041 and move two clamping blocks 1042 closer to each other and clamp the main support rod 701.

[0074] Step 3: Start the feeding motor 303, rotate the dial 302 to rotate, and the side support rods 702 on both sides will move inward;

[0075] Step 4: Start motor 4081, slide frame 403 moves downward to the set position; start the bidirectional lead screw 404, the two sliders 405 move to the positions of the innermost side support rods 702 at both ends; start motor 4061, slide frame 403 moves inward, and the two branches of each side support rod 702 are located between the fixed plate 4073 and the movable plate 4074 of the corresponding clamping and rotating mechanism 407;

[0076] Step 5: Start the electric cylinder 4075. The movable plate 4074 moves towards the fixed plate 4073. The movable plate 4074 and the fixed plate 4073 work together to clamp the branches of the side support rod 702, and both sides of the side support rod 702 are fixed. Start the double-acting screw 404. The fixed side support rods 702 move towards the center until they reach the set position.

[0077] Step 6: Start motor 3 4071, rotate shaft 4072 to drive side support rod 702 to rotate a certain angle, so that the side support rods 702 on both sides are spliced ​​with the main support rod 701 respectively;

[0078] Step 7: Start the electric push rod 502. The piston rod of the electric push rod 502 retracts, and all the upper brackets 703 move downward. The lowest upper bracket 703 is spliced ​​with the main support rod 701 and the two side support rods 702.

[0079] Step 8: Welders perform spot welding on the weld points between the main support rod 701, the side support rod 702, and the upper bracket 703;

[0080] Step 9: Activate the electric push rod 502. The piston rod of the electric push rod 502 extends and locks the upper bracket 703 adjacent to the lowest upper bracket 703; activate the electric cylinder 4075. The movable plate 4074 moves away from the fixed plate 4073, releasing the branch of the side support rod 702; activate the motor 4061. The sliding frame 403 moves outward; activate the motor 4081. The two sliders 402 move upward and return to their original positions; activate the two electric cylinders 1041. The two clamping blocks 1042 retract and release the main support rod 701; activate the servo screw 105. The toggle block 108 moves the spot-welded bicycle rack 7 to the rear end of the limit slide groove 103; manually remove the bicycle rack 7.

[0081] The above steps enable the automated assembly of bicycle rack 7.

Claims

1. A bicycle rack assembly device for assembling a main support rod (701), two side support rods (702), and an upper bracket (703) into a complete bicycle rack (7), characterized in that, The system includes a main support rod moving and fixing device (1), a second frame (2), a side support rod unloading device (3), a side support rod fixing device (4), an upper support unloading device (5), and a control terminal (6). The main support rod moving and fixing device (1) includes a first frame (101), a conveying mechanism (102), a limiting slide groove (103), a clamping mechanism (104), a servo screw (105), a first slider (106), a second electric cylinder (107), and a lever (108). The servo screw (105) runs in a front-to-back direction and is horizontally mounted on the first frame (101). The first slider (106) is slidably mounted on the servo screw (105). The second electric cylinder (107) is fixedly mounted on the first slider (106), and the extension and retraction direction of the second electric cylinder (107) is parallel to that of the first slider (106). The directions of Block 1 (106) are perpendicular to each other. The lever block (108) is fixedly installed on the telescopic end of the electric cylinder 2 (107). The conveying mechanism (102) and the limiting slide (103) are installed collinearly on the frame 1 (101) and are parallel to the servo screw (105). The conveying mechanism (102) corresponds to the front part of the servo screw (105), and the limiting slide (103) corresponds to the rear part of the servo screw (105). The rear end of the conveying mechanism (102) is connected to the front end of the limiting slide (103). The main support rod (701) slides in the conveying mechanism (102) and the limiting slide (103) in sequence. The clamping mechanism (104) is set at the front end of the limiting slide (103) and is used to fix and clamp the main support rod (701) to be spliced. The second frame (2) is used to support the side support rod unloading device (3), the side support rod fixing device (4), and the upper support unloading device (5); the upper support unloading device (5) is located directly above the main support rod (701) fixed by the clamping mechanism (104); the side support rod unloading device (3) is provided in two sets, symmetrically arranged on the left and right sides of the main support rod (701) fixed by the clamping mechanism (104); the side support rod fixing device (4) is provided in two sets, symmetrically arranged on the front and rear sides of the main support rod (701) fixed by the clamping mechanism (104); The control terminal (6) is used to control the operation of the entire bicycle rack splicing equipment.

2. The bicycle rack assembly equipment according to claim 1, characterized in that, The conveying mechanism (102) includes a support frame (1021), a conveyor belt (1022), a conveyor roller (1023), a transmission gear (1024), and a motor (1025). The support frame (1021) is horizontally fixed on the frame (101), and its rear end is connected to the front end of the limiting slide (103). At least one conveyor roller (1023) is vertically rotatably installed on both the left and right sides and the front and rear ends of the support frame (1021). The conveyor rollers (1023) on the same side are synchronously connected by the conveyor belt (1022). The motor (1025) is fixedly installed on the support frame (1021), and its output end is coaxially fixedly connected to one of the conveyor rollers (1023). The two conveyor rollers (1023) located at the front end or the rear end of the support frame (1021) are respectively coaxially fixedly installed with a transmission gear (1024), and the two transmission gears (1024) mesh with each other.

3. The bicycle rack assembly equipment according to claim 1, characterized in that, The clamping mechanism (104) includes an electric cylinder (1041) and a clamping block (1042). There are two electric cylinders (1041), which are symmetrically fixedly installed on the left and right sides of the limiting slide groove (103). The extension and retraction direction of each electric cylinder (1041) is perpendicular to the direction of the limiting slide groove (103). Each extension and retraction end of the electric cylinder (1041) is fixedly installed with a clamping block (1042). The two clamping blocks (1042) are symmetrically arranged and are respectively slidably installed on the left and right side walls of the limiting slide groove (103). The two clamping blocks (1042) work together to clamp and fix the main support rod (701).

4. The bicycle rack assembly equipment according to claim 1, characterized in that, Each set of side support rod feeding devices (3) includes a feeding support frame (301), a rotating dial (302), and a feeding motor (303). The feeding support frame (301) is located on one side of the main support rod (701) fixed by the clamping mechanism (104) and is fixedly installed on the second frame (2) to support the side support rod (702) to be spliced. The rotating dial (302) is located above the inner side of the feeding support frame (301) and is rotatably installed on the second frame (2) to move the side support rod (702) inward. The feeding motor (303) is fixedly installed on the second frame (2), and its output end is coaxially fixedly connected to the rotating dial (302).

5. The bicycle rack assembly equipment according to claim 1, characterized in that, Each set of side support rod fixing devices (4) includes a vertical lead screw (401), a second slider (402), a sliding frame (403), a double lead screw (404), a third slider (405), a sliding mechanism (406), a clamping and rotating mechanism (407), and a transmission assembly (408). There are two vertical lead screws (401), which are symmetrically and vertically installed on the left and right sides of the frame (2). The transmission assembly (408) is set on the frame (2) and is used to drive the two vertical lead screws (401) to rotate synchronously. A second slider (402) is slidably installed on each vertical lead screw (401), and a sliding rod (4021) with a front-to-back direction is fixedly installed on each second slider (402). The sliding frame (403) is horizontally arranged, and its left and right ends are respectively slidably mounted on the sliding rods (4021) on both sides; the sliding mechanism (406) is arranged on the two sliders (402) and is used to drive the sliding frame (403) to slide on the sliding rods (4021); the bidirectional screw (404) runs left and right and is horizontally mounted on the sliding frame (403); there are two sliders (405), which are respectively slidably mounted on the left and right sides of the bidirectional screw (404) and simultaneously slidably mounted on the sliding frame (403); each slider (405) is provided with a set of clamping and rotating mechanisms (407) for fixing the side support rod (702) and driving the side support rod (702) to rotate.

6. The bicycle rack assembly equipment according to claim 5, characterized in that, The sliding mechanism (406) includes a second motor (4061), a second transmission gear (4062), and a transmission shaft (4063); racks (4031) running forward and backward are fixedly installed on both the left and right ends of the sliding frame (403); each rack (4031) meshes with a second transmission gear (4062), and the two second transmission gears (4062) are coaxially fixedly installed on the transmission shaft (4063); the transmission shaft (4063) is horizontally arranged, and its left and right ends are respectively rotatably installed on two second sliders (402); the second motor (4061) is fixedly installed on one of the second sliders (402), and its output end is coaxially fixedly connected to the transmission shaft (4063).

7. The bicycle rack assembly equipment according to claim 5, characterized in that, The clamping and rotating mechanism (407) includes a motor (4071), a rotating shaft (4072), a fixed plate (4073), a movable plate (4074), and an electric cylinder (4075). The motor (4071) is fixedly mounted on the slider (405), and its output end is coaxially and fixedly connected to the rotating shaft (4072). The rotating shaft (4072) is horizontally mounted on the slider (405) and runs back and forth. The fixed plate (4073) runs back and forth. The outer end of the cylinder is fixedly mounted on the rotating shaft (4072), and the inner end points towards the inside of the frame two (2); the electric cylinder three (4075) is fixedly mounted on the fixed plate (4073), and its extension and retraction direction is perpendicular to the fixed plate (4073); the movable plate (4074) is fixedly mounted on the extension and retraction end of the electric cylinder three (4075); the movable plate (4074) and the fixed plate (4073) are parallel to each other and work together to clamp the branch of the fixed side support rod (702).

8. The bicycle rack assembly equipment according to claim 5, characterized in that, The transmission assembly (408) includes a motor (4081), a transmission wheel (4082), and a transmission belt (4083); a transmission wheel (4082) is coaxially fixedly installed at the bottom end of each vertical lead screw (401), and the two transmission wheels (4082) are synchronously connected by the transmission belt (4083); the motor (4081) is fixedly installed on the frame (2), and its output end is coaxially fixedly connected to one of the transmission wheels (4082).

9. The bicycle rack assembly equipment according to claim 1, characterized in that, The upper support unloading device (5) includes a storage bin (501) and an electric push rod (502); the storage bin (501) is located directly above the main support rod (701) fixed by the clamping mechanism (104) and is fixedly installed on the second frame (2); the storage bin (501) is provided with a vertical limiting groove inside, and several upper supports (703) are stored in the storage bin (501) in a stacked manner along the vertical limiting groove; the electric push rod (502) is provided with at least one pair, and each pair of electric push rods (502) is symmetrically fixedly installed on the front and back or left and right sides of the bottom end of the storage bin (501), and the telescopic end of the electric push rod (502) intermittently contacts the upper support (703) to be spliced.

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