Flexible frame assembly line and assembly method

Abstract

The invention relates to the technical field of commercial vehicle assembly lines, and discloses a flexible vehicle frame assembly line and an assembly method. The split charging production line comprises a plurality of heavy roller beds which are linearly arranged in parallel, each heavy roller bed serves as a split charging station, and a skid is arranged at the top of each heavy roller bed; the storage area comprises a plurality of heavy roller beds and is used for storing sub-assembled frames with skids at the bottoms; the at least two heavy transitional machines are arranged, the heavy transitional machine on the transfer line is used for moving the sub-packaged vehicle frame with the skid from the tail station of the sub-packaging production line to the position above the heavy roller bed in the storage area, and the heavy transitional machine on the line is used for moving the sub-packaged vehicle frame with the skid out of the heavy roller bed in the storage area and transferring the sub-packaged vehicle frame on the line, and the heavy transitional machine on the line is used for moving the sub-packaged vehicle frame with the skid out of the heavy roller bed in the storage area. And the no-load skid returns to the head station of the split charging production line. According to the frame assembly line and the assembly method, the technical problems that a traditional frame structure is low in production and assembly efficiency, and frames are inconvenient to store and transfer after being subpackaged are solved.

Description

Technical Field

[0001] The invention relates to the technical field of commercial vehicle assembly lines, and in particular to a flexible vehicle frame assembly line and an assembly method. Background Art

[0002] Currently, the frame structures of commercial vehicles require complex assembly work.

[0003] In the related art, the subassembly of the balance suspension, transfer case and front extension beam of the traditional frame structure is mostly fixed-point subassembly, that is, the frame structure is assembled at a fixed factory location, and after the subassembly is completed, it is transported to the production line to be installed for installation.

[0004] However, the traditional fixed-point subassembly method of the frame structure has too many materials and tools required for each process because the main structure of the frame is fixed and the frame body is surrounded by the material and tools required for each process. The parts are inconvenient to take and easy to mix up, which is time-consuming and labor-intensive, and the production and assembly efficiency is low and the rhythm is slow. More importantly, the frame after subassembly is difficult to stack and store. The subassembly area and the frame production line area are not in the same location. Manual transfer is required in advance before going online, which is difficult to meet the production rhythm of different models on the main line. Summary of the invention

[0005] The present application provides a flexible frame assembly line and assembly method, which solve the technical problems of low production and assembly efficiency of traditional frame structures and inconvenient storage and transportation of frames after assembly.

[0006] In a first aspect, the present application provides a flexible frame assembly line, comprising:

[0007] A palletizing area for stacking several frames to be assembled;

[0008] The sub-packaging production line includes a plurality of heavy-duty roller beds connected in a straight line, each of which serves as a sub-packaging station, and a skid for supporting a frame is arranged on the top of the heavy-duty roller bed; the head station of the sub-packaging production line is adjacent to the palletizing area;

[0009] A storage area containing several heavy-duty roller beds for storing assembled vehicle frames with skids on the bottom;

[0010] At least two heavy-duty transfer machines are used for line transfer and line loading respectively. The heavy-duty transfer machine for line transfer is used to move the assembled frame with the skid from the tail station of the assembly production line to above the heavy-duty roller bed in the storage area. The heavy-duty transfer machine for line loading is used to move the assembled frame with the skid out from the heavy-duty roller bed in the storage area and transfer the assembled frame to the line. The empty skid returns to the head station of the assembly production line.

[0011] In combination with the first aspect, in one embodiment, the frame assembly line further includes a heavy-duty transfer machine for returning to its original position, and the heavy-duty transfer machine for returning to its original position is used to take over the empty sled from the heavy-duty transfer machine on the upstream line, and transport the empty sled back to the head station of the sub-packaging production line.

[0012] In combination with the first aspect, in one embodiment, the heavy-duty roller bed in the storage area and the heavy-duty roller bed in the packaging production line are both provided with sensing probes, and the sensing probes are used to obtain the operating status of the corresponding frame and the coding information affixed to the frame.

[0013] In combination with the first aspect, in one embodiment, the heavy-duty roller bed includes a long roller bed frame and a driving motor, the roller bed frame is provided with a chain and a plurality of sprocket rollers, the plurality of sprocket rollers are arranged at equal intervals along the length direction of the roller bed frame, and each sprocket roller is arranged along the width direction of the roller bed frame; the roller bed frame is also provided with a chain along the length direction of the roller bed frame, and the driving motor drives the sprocket roller to rotate through the chain.

[0014] In combination with the first aspect, in one embodiment, the skid comprises a boat-shaped skid frame, a fixed support seat arranged on the skid frame, and a movable sliding support seat; the skid frame is provided with a slide rail, and the sliding support seat moves along the slide rail; the fixed support seat and the sliding support seat are both used to support the frame.

[0015] In combination with the first aspect, in one embodiment, the heavy-duty moving machine comprises a moving frame, three track assemblies, a moving power device, a driving wheel device and a driven wheel device; the moving frame is a long strip frame, and is used to support a frame with a skid at the bottom; the three track assemblies all pass through the moving frame in a width direction, and the moving frame slides along the three track assemblies;

[0016] The moving power device is arranged on the middle track assembly among the three track assemblies, the two driving wheel devices are arranged on the two side track assemblies among the three track assemblies on one side of the moving frame 210, and the two driven wheel devices and the two driving wheel devices are symmetrically arranged along the width of the moving frame; the moving power device drives the moving frame to slide along the three track assemblies through the driving wheel device and the driven wheel device.

[0017] In combination with the first aspect, in one embodiment, the moving frame is provided with a plurality of moving rollers along the width direction; the moving rollers are used to drive the frame with a skid at the bottom to slide along the length direction of the moving frame;

[0018] The travel frame is further provided with a guide track parallel to the track assembly. The guide track is provided with a plurality of guide induction wheels, and the guide induction wheels are used to sense the position of the track assembly where the travel frame is located.

[0019] In combination with the first aspect, in one embodiment, the frame assembly line further includes an unpowered roller bed, and the unpowered roller bed is arranged between the heavy-duty moving machine on the upper line and the heavy-duty roller bed in the storage area.

[0020] In a second aspect, the present application discloses an assembly method based on the above-mentioned frame assembly line, comprising the following steps: S1: a logistics vehicle transports the frame to be assembled to a palletizing area;

[0021] S2: Use an overhead crane to lift the frame to be assembled onto the skid located at the head station of the assembly production line;

[0022] S3: The heavy roller bed of the sub-packaging production line drives the frame to be sub-packed with a skid at the bottom to pass through each sub-packaging station in turn until the sub-packaging is completed;

[0023] S4: The heavy-duty transfer machine of the transfer line moves the assembled frame with skid from the tail station of the assembly production line to the top of the heavy-duty roller bed in the storage area;

[0024] S5: When receiving the command to go online, the heavy-duty transfer machine on the line moves the assembled frame with the skid out from the heavy-duty roller bed in the storage area, and transfers the assembled frame to the line, and the empty skid returns to the head station of the assembly production line.

[0025] In conjunction with the second aspect, in one embodiment, the heavy-duty roller bed in the storage area and the heavy-duty roller bed in the sub-packaging production line are both provided with induction probes;

[0026] During transportation, the sensing probe acquires the operating status of the corresponding frame;

[0027] When receiving the online instruction, the sensing probe obtains the coding information pasted on the vehicle frame.

[0028] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0029] The frame assembly line of the present application stores unassembled frames in the stacking area, and the skids and heavy-duty transfer machines cooperate to send the frames to the head station of the assembly production line; for the frames to be assembled, the skids carry the frames, and each assembly task is completed in turn through a number of heavy-duty roller beds in a straight line, so as to realize assembly line operation and improve operation efficiency; at the same time, only the materials and tools of the corresponding station are stored around each assembly station, which greatly reduces the workload of personnel carrying materials and tools back and forth; the assembled frames are moved to the storage area by the heavy-duty transfer machine The storage area is equipped with several heavy-duty roller beds for storing assembled frames with skids at the bottom. When they need to be put on line, the assembled frames with skids are moved out from the heavy-duty roller beds in the storage area by the heavy-duty transfer machine on line, and the assembled frames are transferred on line. The empty skids are returned to the head station of the assembly line. The use of skids forms a closed loop. The whole process is efficient, semi-automatic, multi-functional and flexible. Unassembled frames, partially assembled frames and assembled frames can exist on the assembly line at the same time, realizing the characteristics of mixed flow of frames on line.

[0030] The frame assembly line of the present application realizes mixed flow of frames through the combination of heavy-duty roller beds and heavy-duty transfer machines. The equipment has individual control and linkage control to increase operability. The combination of heavy-duty roller beds realizes assembly and assembly flow operations, reduces the time for material and tool transportation, and realizes the integrated and multifunctional characteristics of assembly and storage. It solves the difficulty of storing assembled frames and the problem of manual transfer between the assembly area and the line area. Through the joint adjustment of equipment, efficient semi-automatic cyclic assembly is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A top view of a frame assembly line provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of a skid-free heavy-duty roller bed provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of a sled provided in an embodiment of the present application;

[0035] Figure 4 A schematic diagram of a heavy-duty moving machine provided in an embodiment of the present application;

[0036] Figure 5 A schematic diagram of an unpowered roller bed provided in an embodiment of the present application;

[0037] Figure 6 A schematic diagram of the orientation of a frame and a slide in the assembly method provided in an embodiment of the present application;

[0038] In the figure: 1. Sled; 2. Heavy-duty transfer machine; 3. Unpowered roller bed; 4. Heavy-duty roller bed; 5. Logistics vehicle; 6. Frame to be assembled;

[0039] 41. driving motor; 42. chain; 43. sprocket roller; 44. tensioning wheel device; 45. induction probe; 46. control switch; 47. support frame; 48. roller bed frame;

[0040] 11. Rear limit baffle; 12. Fixed support seat; 13. Pry body frame; 14. Limit block; 15. Slide rail; 16. Sliding support seat;

[0041] 21. Wire harness drag chain; 22. Side track assembly; 23. Moving power device; 24. Middle track assembly; 25. Driving wheel device; 26. Anti-collision device; 27. Guide induction wheel; 28. Guide track; 29. ​​Moving roller; 210. Moving frame; 211. Moving switch; 212. Driven wheel device; 213. Buffer; 100. Palletizing area; 101. Packaging production line; 102. Storage area. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] The embodiment of the present application provides a flexible frame assembly line, which can solve the technical problems of low production and assembly efficiency of traditional frame structures and inconvenient storage and transportation of frames after assembly.

[0044] like Figures 1 to 5 As shown, the present application discloses an embodiment of a flexible frame assembly line, which comprises a palletizing area 100, a subassembly production line 101, a storage area 102 and at least three heavy-duty moving machines 2. The palletizing area 100 is used to stack a number of frames 6 to be subassembled.

[0045] The subassembly production line 101 includes a plurality of heavy-duty roller beds 4 arranged in a straight line, each of which serves as a subassembly station. A sled 1 for supporting a frame is arranged on the top of the heavy-duty roller bed 4, and the sled 1 slides with the frame 6 to be subassembly. Figure 6The first heavy roller bed 4 on the right side of the center 101 is adjacent to the stacking area 100. Specifically, the sled 1 carries the frame 6 to be assembled and slides along the assembly stations one by one for step-by-step assembly. Specifically, only the materials and tools of the corresponding station are stored around each assembly station, which greatly reduces the workload of personnel carrying materials and tools back and forth.

[0046] The storage area 102 includes a plurality of heavy-duty roller beds 4 for storing assembled frames with a skid 1 at the bottom. The skid and the assembled frames are placed together, thereby solving the technical problem in the prior art that the assembled frames are inconvenient to store.

[0047] At least two heavy-duty moving machines 2 are used for line transfer and line entry respectively.

[0048] The heavy-duty transfer machine 2 of the transfer line is used to move the assembled vehicle frames with the skids 1 from the tail station of the assembly production line 101 to the heavy-duty roller bed 4 in the storage area 102 for orderly storage. Specifically, the assembled vehicle frames stored in the storage area 102 are all coded.

[0049] The heavy-duty transfer machine 2 on the line is used to remove the assembled frame with the skid 1 from the heavy-duty roller bed 4 in the storage area 102, and transfer the assembled frame to the line, while the skid 1 is left behind for reuse. The empty skid 1 returns to the head station of the assembly line 101.

[0050] In the frame assembly line of the present application, the unassembled frames are stored in the palletizing area 100, and the skid and the heavy-duty transfer machine cooperate to deliver the frames to the head station of the assembly production line 101;

[0051] For the frame to be assembled 6, the skid carries the frame, and each assembly work is completed in turn through several heavy-duty roller beds 4 connected in a straight line, so as to realize assembly line operation and improve operation efficiency; at the same time, only materials and tools and equipment of the corresponding station are stored around each assembly station, which greatly reduces the workload of personnel carrying materials and tools back and forth; the assembled frame is moved to the storage area 102 by a heavy-duty transfer machine, and the storage area 102 has several heavy-duty roller beds 4 for storing the assembled frame with a skid 1 at the bottom; when it is necessary to go online, the assembled frame with the skid 1 is removed from the heavy-duty roller bed 4 in the storage area 102 by the heavy-duty transfer machine 2 on the line, and the assembled frame is transferred to the line, and the empty skid 1 returns to the head station of the assembly production line 101. The use of the skid forms a closed loop. The whole process is efficient, semi-automatic, multi-functional and flexible, and unassembled frames, partially assembled frames and assembled frames can exist on the assembly line at the same time, realizing the characteristics of mixed flow of frames on the line.

[0052] The frame assembly line of the present application realizes mixed flow of frames through the combination of heavy-duty roller beds and heavy-duty transfer machines. The equipment has individual control and linkage control to increase operability. The combination of heavy-duty roller beds realizes assembly and assembly flow operations, reduces the time for material and tool transportation, and realizes the integrated and multifunctional characteristics of assembly and storage. It solves the difficulty of storing assembled frames and the problem of manual transfer between the assembly area and the line area. Through the joint adjustment of equipment, efficient semi-automatic cyclic assembly is realized.

[0053] In one embodiment, the frame assembly line also includes a heavy-duty moving machine 2 for returning to its original position. The heavy-duty moving machine 2 for returning to its original position is used to take over the unloaded sled 1 from the heavy-duty moving machine 2 on the line, and transport the unloaded sled 1 back to the head station of the sub-packaging production line 101 for cyclic assembly.

[0054] The heavy-duty moving machine 2 for turning, the heavy-duty moving machine 2 for going online and the heavy-duty moving machine 2 for returning make the three heavy-duty moving machines 2 responsible for different positions and play different roles, which is more efficient.

[0055] Furthermore, the three heavy-duty transfer machines 2 are respectively a first heavy-duty transfer machine arranged at the tail station of the subpackaging production line, a second heavy-duty transfer machine arranged at the exit of the storage area 102, and a third heavy-duty transfer machine arranged between the second heavy-duty transfer machine and the head station.

[0056] The first heavy-duty mobile machine uses air power supply, while the second and third heavy-duty mobile machines use ground rail power supply.

[0057] In one embodiment, the heavy-duty roller bed 4 in the storage area 102 and the heavy-duty roller bed 4 in the subassembly production line 101 are both provided with a sensing probe 45, and the sensing probe 45 is used to obtain the operating status of the corresponding frame and the coding information attached to the frame.

[0058] The frame assembly line of the present application, whether it is the heavy-duty roller bed 4 in the storage area 102 or the heavy-duty roller bed 4 in the sub-packaging production line 101, each can be individually controlled and can identify the material information of the loaded frame. According to the signal input of the main line, the heavy-duty transfer machine in the online area stays in the storage area and transports the corresponding frame to the fixed online point, realizing a series of unmanned operations, reducing labor costs and lifting time; after the frame is unloaded, the heavy-duty transfer machine sends the empty slide back to the heavy-duty roller bed to start the next round of sub-packaging work, which is labor-saving and efficient.

[0059] Specifically, in this application, the main line and the position after the upper line are not drawn, and this application will not describe them in detail.

[0060] Preferably, the axial moving distance of the first heavy-duty moving machine and the third heavy-duty moving machine is 8350 mm, which is greater than the axial moving distance of the second heavy-duty moving machine of 3350 mm.

[0061] In one embodiment, Figure 2 As shown, the heavy-duty roller bed 4 includes a long roller bed frame 48 and a driving motor 41 , and the roller bed frame 48 is provided with a chain 42 and a plurality of sprocket rollers 43 .

[0062] A plurality of sprocket rollers 43 are arranged at equal intervals along the length direction of the roller bed frame 48, and each sprocket roller 43 is arranged along the width direction of the roller bed frame 48; the roller bed frame 48 is also provided with a chain 42 along the length direction of the roller bed frame 48, and the driving motor 41 drives the sprocket rollers 43 to rotate through the chain 42, and the plurality of sprocket rollers 43 can drive the slide 1 to move, thereby driving the frame with the slide 1 at the bottom to move.

[0063] Preferably, a tensioning wheel device is also provided between the closed-loop chains 42 for tensioning the chains 44. The heavy roller bed 4 is also provided with a control switch 46, which controls the drive motor 41 to be turned on or off. A plurality of support frames 47 are provided at the bottom of the roller bed frame 48 for supporting the roller bed frame 48 on the ground.

[0064] In the frame assembly line of the present application, the heavy-duty roller bed 4 is equipped with a driving motor 41 and has an independent driving capability. The sprocket roller 43 is driven by a chain 42, and the sprocket roller 43 drives the slide passing over the roller bed, and is equipped with an induction probe 45 and a control switch 46, which can realize automatic and manual control. The combination of multiple heavy-duty roller beds can realize assembly line-style packaging operations and frame storage functions, meeting the characteristics of line automation and multi-functions.

[0065] In one embodiment, Figure 3 As shown, the skid 1 comprises a boat-shaped skid frame 13, a fixed support seat 12 disposed on the skid frame 13, and a movable sliding support seat 16. The skid frame 13 is provided with a slide rail 15, and the sliding support seat 16 moves along the slide rail 15, and both the fixed support seat 12 and the sliding support seat 16 are used to support the vehicle frame.

[0066] In the frame assembly line of the present application, the sliding support seat 16 can support frames of different sizes of different types of vehicles, meet the flexible support requirements, and provide stable and reliable support.

[0067] Preferably, the slide 1 further comprises a rear limit baffle 11 for resisting and limiting the rear end of the frame in the moving direction to prevent the frame from sliding out. The slide rail 15 is also provided with a limit block 14 for limiting the extreme sliding position on both sides.

[0068] Specifically, the sled 1 is placed on the heavy-duty roller bed 4. A support seat is provided on the sled 1 for placing the frame. The support seat is divided into a fixed support seat 12 and a sliding support seat 16. The fixed support seat 12 is fixed to the skid frame 13 and cannot move left and right, but can rotate around the bottom of the support seat. The height of the support seat can be lowered by rotation to prevent interference with the frame structure. The sliding support seat 16 can move left and right along the slide rail 15 and is limited by four limit blocks 14 to meet the placement of frames of different lengths; the rear limit baffle 11 is used for positioning the frame. The frame is placed on the sled and aligned with the rear limit baffle, which is convenient for the sensor probe 45 to identify the center point and coordinates of the frame.

[0069] like Figure 4 As shown, in one embodiment, the heavy-duty traveling machine 2 includes a traveling frame 210 , three track assemblies, a traveling power device 23 , a driving wheel device 25 and a driven wheel device 212 .

[0070] The traveling frame 210 is a long strip frame used to support the frame with a skid at the bottom, and drive the frame with a skid at the bottom to move horizontally (in the length direction of the traveling frame 210) or longitudinally (in the width direction of the traveling frame 210). The three track assemblies all pass through the traveling frame 210 in the width direction, and the traveling frame 210 slides in the longitudinal direction along the three track assemblies.

[0071] The moving power device 23 is arranged on the middle track assembly 24 of the three track assemblies, and the moving power device 23 can be a motor. Two driving wheel devices 25 are respectively arranged on one side of the two side track assemblies 22 of the three track assemblies on the moving frame 210. Two driven wheel devices 212 are respectively arranged on the other side of the two side track assemblies 22 of the three track assemblies on the moving frame 210. The driven wheel device 212 and the driving wheel device 25 are symmetrically arranged along the width of the moving frame 210.

[0072] The moving power device 23 drives the driving wheel device 25 through the connecting rod structure and gears. The moving power device 23 drives the moving frame 210 to slide along the three track assemblies through the driving wheel device 25 and the driven wheel device 212. Specifically, the moving power device 23 drives the driving wheel device 25 through the connecting rod structure and the gear structure, and the driving wheel device 25 drives the moving frame 210 to slide along the three track assemblies.

[0073] In one embodiment, the moving frame 210 is provided with a plurality of moving rollers 29 along the width direction, so that the frame with the skid can slide on it, and the moving rollers 29 are used to drive the frame with the skid at the bottom to slide along the length direction of the moving frame 210. The moving frame 210 is also provided with a guide track 28 parallel to the track assembly, and the guide track 28 is provided with a plurality of guide sensing wheels 27, and the guide sensing wheels 27 are used to sense the position of the track assembly where the moving frame 210 is located.

[0074] The heavy-duty moving machine 2 of the present application can drive the frame with skids at the bottom to move horizontally and vertically, laying the foundation for turning and going online, and the guide rails 28 and the guide induction wheels 27 further realize precise movement control.

[0075] Furthermore, the heavy-duty moving machine 2 further comprises a harness drag chain 21 for external power supply. The heavy-duty moving machine 2 further comprises a moving switch 211 for controlling the opening and closing of the moving power device 23 .

[0076] The heavy-duty traveling machine 2 further includes an anti-collision device 26 and a buffer 213. Four anti-collision devices 26 are respectively arranged at the four ends of the two side track assemblies 22, and four buffers 213 are respectively arranged on the two width direction side end surfaces of the traveling frame 210 at the corresponding positions. When the traveling frame 210 slides to the limit position along the three track assemblies, the anti-collision device 26 and the buffer 213 stop under the action of the buffering force.

[0077] In one embodiment, the frame assembly line further comprises an unpowered roller bed 3, which is disposed between the heavy-duty moving machine 2 on the upper line and the heavy-duty roller bed 4 in the storage area 102. The unpowered roller bed 3 serves as a transition.

[0078] like Figure 6 As shown, the present application also discloses an assembly method based on the above-mentioned flexible frame assembly line, which is characterized by comprising the following steps:

[0079] S1: The logistics vehicle transports the to-be-assembled frame 6 to the palletizing area 100. The palletizing area 100 is adjacent to the line edge of the head station of the assembly production line.

[0080] S2: Use an overhead crane to lift the frame 6 to be assembled onto the sled 1 located at the head station of the assembly production line 101.

[0081] S3: The heavy roller bed 6 of the subassembly production line 101 drives the frame 6 to be subassembly with the sled 1 at the bottom to pass through each subassembly station in sequence until the subassembly is completed. The sled 1 and the frame 6 to be subassembly move synchronously and are stored synchronously in the storage area 102. The sled 1 is separated from the subassembly frame after the subassembly is put on the line.

[0082] S4: The heavy-duty transfer machine 2 of the transfer line moves the assembled frame with the skid 1 from the tail station of the assembly production line 101 to above the heavy-duty roller bed 4 in the storage area 102.

[0083] S5: When receiving the command to go online, the heavy-duty transfer machine 2 on the line moves the assembled frame with the skid 1 out of the heavy-duty roller bed 4 in the storage area 102, and transfers the assembled frame to the line, and the empty skid 1 returns to the head station of the assembly production line 101.

[0084] Specifically, Figure 6The figure shows the direction of the frame and the sled, which are ①②③④⑤⑥ in sequence. ① The frame to be assembled arrives at the head station, ② During the assembly process, the frame and the sled move synchronously, ③ Turning line, the frame and the sled move synchronously, ④ Storage and out of the storage area, the frame and the sled move synchronously; ⑤ On the line, the frame is separated from the sled, and ⑥ The empty sled returns to the head station.

[0085] Preferably, in step S2, the sled 1 and the frame to be assembled 6 are temporarily fixed, and in step S5, when the assembled frame is transferred to the production line, the sled 1 and the frame to be assembled 6 are released from temporary fixation.

[0086] Specifically, each frame to be assembled 6 has coding information. In step S5, the online instruction contains the coding information of the specific assembled frame. After receiving the online command, the heavy-duty roller bed 4 in the storage area 102 where the corresponding assembled frame is located starts corresponding action until the corresponding assembled frame is taken away by the heavy-duty moving machine 2 on line.

[0087] In one embodiment, the frame assembly line further includes a heavy-duty moving machine 2 for returning to its original position. The heavy-duty moving machine 2 for returning to its original position is used to take over the unloaded sled 1 from the heavy-duty moving machine 2 on the upper line, and transport the unloaded sled 1 back to the head station of the subassembly production line 101 for cyclic assembly. The heavy-duty moving machine 2 for changing lines, the heavy-duty moving machine 2 on the upper line, and the heavy-duty moving machine 2 for returning to its original position enable the three heavy-duty moving machines 2 to be responsible for different positions and play different roles, which is more efficient.

[0088] The storage area includes a storage area entrance and a storage area exit. The installed frame passes through the heavy-duty moving machine 2 from the tail station of the subassembly production line 101 and then enters the storage area 102 through the storage area entrance.

[0089] In step S5, the corresponding heavy-duty roller bed delivers the assembled frame with the skid to the exit of the storage area, and docks it through the unpowered heavy-duty roller bed 3. The heavy-duty transfer machine 2 takes over the assembled frame with the skid and transfers it online. At this time, the assembled frame is online and the empty skid is brought back by the heavy-duty transfer machine 2.

[0090] The unloaded sled 1 returns to the head station of the subpackaging production line 101, including:

[0091] The returning heavy-duty moving machine 2 takes over the empty slide from the heavy-duty moving machine 2 on the line, and sends the empty slide to the head station of the sub-packaging production line 101 along the guide rail to realize the cycle.

[0092] According to the assembly method of the present application, for the unassembled frames, they are stored in the stacking area 100, and the sled and the heavy-duty transfer machine cooperate to send the frames to the head station of the assembly production line 101; for the frames to be assembled 6, the sled carries the frames, and each assembly work is completed in turn through a number of heavy-duty roller beds 4 arranged in a straight line, so as to realize assembly line operation and improve operation efficiency; at the same time, only the materials and tools and equipment of the corresponding station are stored around each assembly station, which greatly reduces the workload of personnel carrying materials and tools back and forth; for the assembled frames, they are moved to the storage area 102 by the heavy-duty transfer machine, and stored The storage area 102 has several heavy-duty roller beds 4 for storing assembled frames with skids 1 at the bottom; when it is necessary to go online, the assembled frames with skids 1 are moved out from the heavy-duty roller beds 4 in the storage area 102 by the heavy-duty transfer machine 2 on the line, and the assembled frames are transferred online, and the empty skid 1 returns to the head station of the assembly production line 101. The use of the skid forms a closed loop, and the whole process is efficient, semi-automatic, multifunctional and flexible. In addition, unassembled frames, partially assembled frames and assembled frames can exist on the assembly line at the same time, realizing the characteristics of mixed flow of frames on the line.

[0093] The assembly method of the present application realizes mixed flow of frames on-line through the combination of heavy-duty roller beds and heavy-duty transfer machines, and the equipment has individual control and linkage control to increase operability; the combination of heavy-duty roller beds realizes assembly line operation, reduces the time for handling materials and tools, and realizes the integrated and multifunctional characteristics of assembly and storage, which solves the difficulty of storing the assembled frames and the problem of manual transfer between the assembly area and the online area, and realizes efficient semi-automatic cyclic assembly through the joint adjustment of equipment.

[0094] Furthermore, both the heavy-duty roller bed 4 in the storage area 102 and the heavy-duty roller bed 4 in the sub-packaging production line 101 are provided with a sensing probe 45 .

[0095] During transportation, the sensing probe 45 obtains the operating status of the corresponding frame;

[0096] When receiving the online instruction, the sensing probe 45 obtains the coding information attached to the vehicle frame.

[0097] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0098] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0099] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A flexible frame assembly line, characterized in that: Include: A stacking area (100) for stacking a plurality of vehicle frames (6) to be assembled; A sub-packaging production line (101) comprises a plurality of heavy-duty roller beds (4) connected in a straight line, each heavy-duty roller bed (4) serving as a sub-packaging station, a skid (1) for supporting a frame being arranged on the top of the heavy-duty roller bed (4); the head station of the sub-packaging production line (101) is adjacent to the palletizing area (100); A storage area (102) comprising a plurality of heavy-duty roller beds (4) for storing assembled vehicle frames with skids (1) at the bottom; At least two heavy-duty transfer machines (2) are used for line transfer and line loading, respectively. The heavy-duty transfer machine (2) for line transfer is used to move the assembled frame with the slide (1) from the tail station of the assembly production line (101) to above the heavy-duty roller bed (4) in the storage area (102). The heavy-duty transfer machine (2) for line loading is used to move the assembled frame with the slide (1) out of the heavy-duty roller bed (4) in the storage area (102) and transfer the assembled frame to the assembly line. The empty slide (1) returns to the head station of the assembly production line (101).

2. A flexible frame assembly line as claimed in claim 1, characterized in that: The frame assembly line also includes a heavy-duty transfer machine (2) for returning to a position, wherein the heavy-duty transfer machine (2) for returning to a position is used to take over the unloaded sled (1) from the heavy-duty transfer machine (2) on the line, and to transport the unloaded sled (1) back to the head station of the sub-assembly production line (101).

3. A flexible frame assembly line as claimed in claim 1, characterized in that: The heavy-duty roller bed (4) in the storage area (102) and the heavy-duty roller bed (4) in the sub-packaging production line (101) are both provided with a sensing probe (45), and the sensing probe (45) is used to obtain the operating status of the corresponding frame and the coding information attached to the frame.

4. A flexible frame assembly line as claimed in claim 1, characterized in that: The heavy-duty roller bed (4) comprises a long roller bed frame (48) and a driving motor (41); the roller bed frame (48) is provided with a chain (42) and a plurality of sprocket rollers (43); the plurality of sprocket rollers (43) are arranged at equal intervals along the length direction of the roller bed frame (48), and each sprocket roller (43) is arranged along the width direction of the roller bed frame (48); the roller bed frame (48) is also provided with a chain (42) along the length direction of the roller bed frame (48), and the driving motor (41) drives the sprocket roller (43) to rotate through the chain (42).

5. The flexible frame assembly line according to claim 1, characterized in that: The skid (1) comprises a boat-shaped skid frame (13), a fixed support seat (12) arranged on the skid frame (13), and a movable sliding support seat (16); the skid frame (13) is provided with a slide rail (15), and the sliding support seat (16) moves along the slide rail (15); the fixed support seat (12) and the sliding support seat (16) are both used to support a vehicle frame.

6. A flexible frame assembly line as claimed in claim 1, characterized in that: The heavy-duty moving machine (2) comprises a moving frame (210), three track assemblies, a moving power device (23), a driving wheel device (25) and a driven wheel device (212); the moving frame (210) is a long strip frame and is used to support a frame with a skid at the bottom; the three track assemblies all pass through the moving frame (210) in the width direction, and the moving frame (210) slides along the three track assemblies; The moving power device (23) is arranged on the middle track assembly (24) among the three track assemblies, the two driving wheel devices (25) are arranged on two side track assemblies (22) among the three track assemblies on one side of the moving frame 210, and the two driven wheel devices (212) and the two driving wheel devices (25) are symmetrically arranged along the width of the moving frame (210); the moving power device (23) drives the moving frame (210) to slide along the three track assemblies through the driving wheel devices (25) and the driven wheel devices (212).

7. A flexible frame assembly line as claimed in claim 6, characterized in that: The moving frame (210) is provided with a plurality of moving rollers (29) along the width direction; the moving rollers (29) are used to drive the frame with a skid at the bottom to slide along the length direction of the moving frame (210); The travel frame (210) is also provided with a guide track (28) parallel to the track assembly. The guide track (28) is provided with a plurality of guide induction wheels (27). The guide induction wheels (27) are used to sense the position of the track assembly where the travel frame (210) is located.

8. The flexible frame assembly line according to claim 1, characterized in that: The frame assembly line also includes an unpowered roller bed (3), which is arranged between the heavy-duty moving machine (2) on the upper line and the heavy-duty roller bed (4) in the storage area (102).

9. An assembly method based on the frame assembly line according to claim 1, characterized in that: The following steps are involved: S1: The logistics vehicle transports the rack to be assembled (6) to the palletizing area (100); S2: Using an overhead crane to hoist the vehicle frame (6) to be assembled onto a sled (1) located at the head station of the assembly production line (101); S3: The heavy-duty roller bed (4) of the sub-packaging production line (101) drives the to-be-packed frame (6) with the slide (1) at the bottom to pass through each sub-packaging station in sequence until the sub-packaging is completed; S4: The heavy-duty transfer machine (2) of the transfer line moves the assembled frame with the skid (1) from the tail station of the assembly production line (101) to the top of the heavy-duty roller bed (4) in the storage area (102); S5: When receiving the command to go online, the heavy-duty transfer machine (2) on the line moves the assembled frame with the slide (1) out of the heavy-duty roller bed (4) in the storage area (102), and transfers the assembled frame to the line, and the empty slide (1) returns to the head station of the assembly production line (101).

10. The assembly method according to claim 9, characterized in that: The heavy-duty roller bed (4) in the storage area (102) and the heavy-duty roller bed (4) in the sub-packaging production line (101) are both provided with a sensing probe (45); During transportation, the sensing probe (45) acquires the operating status of the corresponding frame; When receiving the online instruction, the sensing probe (45) acquires the coded information pasted on the vehicle frame.

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