An automatic wheel rim welding production line for automobiles

Abstract

This utility model provides an automated welding production line for automotive wheel rims, including a loading mechanism for loading stacks of wheel rims with multiple openings; a feeding mechanism located at the end of the loading mechanism for feeding the stacked wheel rims one by one; a diameter-expanding transfer mechanism located above the feeding mechanism for expanding the diameter of the fed wheel rims and transferring them; a positioning mechanism located at the end of the diameter-expanding transfer mechanism for positioning the wheel rims after diameter expansion and transfer; a transfer robot with two picking stations for continuously picking up and transporting wheel rims from the positioning mechanism to the welding machine, and picking up and transporting already welded wheel rims from the welding machine to the deburring machine; a picking mechanism for picking up wheel rims after deburring and stacking them; and an unloading mechanism located at the end of the picking mechanism for unloading the stacked wheel rims. This utility model is an automated production line integrating batch loading, individual feeding, diameter expansion and transfer, processing, stacking, and batch unloading of wheel rims.

Description

Technical Field

[0001] This utility model belongs to the field of welding equipment technology, specifically relating to an automatic welding production line for automotive wheel rims. Background Technology

[0002] During the rolling and forming process, wheel rim blanks may experience slight dimensional deviations due to stress release and mold wear, directly affecting the alignment accuracy with other components. The diameter expansion welding process solves this problem by employing a "diameter expansion first, then welding" approach.

[0003] However, the existing wheel rim processing technology has the following drawbacks in the production process: 1. Wheel rims need to be manually transported to the processing line one by one. An additional operator is required for subsequent unloading, stacking the finished wheel rims before unloading. This results in high labor intensity and production efficiency is constrained by human factors. 2. The wheel rim diameter expansion process is carried out manually with the assistance of expansion fixtures. To prevent springback after expansion, multiple expansion fixtures need to be configured to operate in rotation to ensure that the expanded wheel rim remains shaped on the fixture for a period of time. Operators need to move back and forth between these multiple fixtures, resulting in high labor intensity. 3. Generally, the welding and deburring processes of wheel rims are carried out in two separate steps, requiring manual relay between the two processes. This results in long downtime and low output per unit time. Those skilled in the art urgently need to solve the above technical problems. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, this utility model provides an automatic welding production line for automotive wheel rims, which integrates batch feeding, individual feeding, diameter expansion and transfer, processing, stacking and batch unloading of wheel rims, with fully automated operation and high processing accuracy.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An automated welding production line for automotive wheel rims includes:

[0007] The feeding mechanism loads stacks of several open wheel rims;

[0008] A feeding mechanism, located at the end of the loading mechanism, is used to feed stacked wheel rims one by one;

[0009] An expansion and transfer mechanism is placed above the feeding mechanism and is used to expand the diameter of the feed wheel rims one by one and transfer them.

[0010] A positioning mechanism, located at the end of the diameter expansion and transfer mechanism, is used to position the wheel rim after diameter expansion and transfer.

[0011] The transfer robot has two material handling stations, which are used to continuously pick up and transport wheel rims from the positioning mechanism to the welding machine, and pick up and transport the welded wheel rims from the welding machine to the deburring machine. The welding machine is used to weld the open wheel rims into a whole rim, and the deburring machine is used to grind the welded parts of the wheel rims.

[0012] The material handling mechanism picks up the wheel rims that have been polished by the deburring machine and stacks them.

[0013] The unloading mechanism, located at the end of the picking mechanism, is used to unload stacked wheel rims.

[0014] in,

[0015] The diameter expansion and transfer mechanism includes a transfer seat, a linear slide table mounted on the transfer seat, a gantry frame slidably mounted on the linear slide table, a rotating component mounted on the gantry frame and capable of vertical displacement, and a diameter expansion component mounted at the end of the rotating component, the diameter expansion component being arranged facing the feeding mechanism.

[0016] In a preferred embodiment of the present invention, a lifting cylinder is installed on the gantry frame, the output end of the lifting cylinder is connected to a displacement seat, and the rotating assembly is installed on the displacement seat;

[0017] The rotating assembly includes a rotating shaft mounted on a displacement seat, a first pulley mounted on the rotating shaft, a reducer mounted on the displacement seat, and a second pulley mounted on the output end of the reducer and connected to the first pulley in a drive transmission. The first pulley rotates while driving the rotating shaft to rotate.

[0018] The diameter expansion assembly includes a three-jaw seat mounted at the end of the rotating shaft, a displacement cylinder mounted on the three-jaw seat, an inner support jaw mounted on the output end of the displacement cylinder, and a limiting member mounted on the three-jaw seat and facing the inner support jaw. The inner support jaw moves with the lifting cylinder until its lower surface contacts the wheel rim. The three sets of displacement cylinders respectively drive the inner support jaws connected to them to move, expanding the wheel rim inward until the inner support jaw touches the limiting member. The rotating assembly drives the diameter expansion assembly and the wheel rim on it to rotate until the opening of the wheel rim is in a set position.

[0019] In a preferred embodiment of the present invention, the positioning mechanism includes a positioning seat that is mounted on a transfer seat and is liftable, positioning blocks that are evenly distributed along the periphery of the positioning seat, and a rotary pressing cylinder mounted on the positioning blocks, wherein the rotary pressing cylinder rotates and presses down on the wheel ring placed on the positioning blocks.

[0020] Two rotary clamping cylinders are arranged, which are set on two positioning blocks near the opening end of the wheel rim.

[0021] In a preferred embodiment of the present invention, the transfer robot includes a multi-axis robot, a Z-shaped gripper mounted on the end effector of the multi-axis robot, and a first material handling component and a second material handling component mounted at both ends of the gripper.

[0022] The first material handling component includes a first material handling claw slidably mounted on a clamping seat. The first material handling claw is driven by a first material handling cylinder to move along the clamping seat. The wheel rim is placed between the end of the clamping seat and the first material handling claw. The first material handling claw is driven by the first material handling cylinder to move towards the end of the clamping seat and clamp the wheel rim.

[0023] The second material handling component includes a second material handling claw installed at the other end of the clamping seat, a second material handling cylinder installed on the clamping seat, and a pressing head installed on the clamping seat and connected to the output end of the second material handling cylinder. The pressing head moves closer to or away from the second material handling claw under the push of the second material handling cylinder.

[0024] In a preferred embodiment of the present invention, the material handling mechanism, which is located between the deburring machine and the unloading mechanism, includes a material handling seat, a material handling component and a stacking component mounted on the material handling seat;

[0025] The material handling assembly includes a material handling frame, a lifting module mounted on the material handling frame, a translation module mounted on the lifting module, and a material handling module mounted on the translation module;

[0026] The stacking assembly includes a stacking rack, a lifting platform mounted on the stacking rack, and a first roller conveyor mounted on the lifting platform.

[0027] In a preferred embodiment of the present invention, the feeding mechanism includes a second roller line that is connected to the first roller line, and an arc-shaped deflecting roller line installed at the end of the second roller line.

[0028] In a preferred embodiment of the present invention, the feeding mechanism includes a third roller line, an adjustable first limiting frame installed on both sides of the third roller line, and stacked wheel rims placed in the first limiting frame and continuously conveyed to the feeding mechanism along with the third roller line.

[0029] At the beginning of the third roller line, there is a baffle arranged perpendicular to its conveying direction, and a second limiting frame arranged perpendicular to the baffle. The limiting surface of the second limiting frame is flush with the limiting surface of the first limiting frame on one side.

[0030] In a preferred embodiment of the present invention, the feeding mechanism is installed in the transfer seat, and the third roller line extends into the transfer seat. The feeding mechanism includes a lifting component installed below the third roller line. The lifting component contacts the lowest wheel rim and lifts the wheel rims one by one upward to contact the diameter expansion component.

[0031] The feeding mechanism also includes a guide assembly installed on the third roller line. The guide assembly includes an arc-shaped barrier that contacts the wheel rim and is arranged along the height of the stacked wheel rims, and a guide that is installed on the transfer seat and can extend inward to contact the wheel rim.

[0032] Beneficial effects:

[0033] This utility model discloses an automatic welding production line for automotive wheel rims, which integrates batch feeding, individual feeding, diameter expansion and transfer, processing, stacking and batch unloading of wheel rims. The entire process is automated, continuous and efficient, with precise positioning and high precision in finished product processing.

[0034] This utility model's feeding mechanism automatically conveys stacked wheel rims, enabling batch feeding. The feeding mechanism uses lifting and guiding components to separate the wheel rims one by one and precisely connect them with the diameter expansion and transfer mechanism. Through multiple limit and guiding designs, it ensures stable positioning of the wheel rims during conveying and transfer.

[0035] This utility model designs an expansion and transfer mechanism, which integrates wheel rim expansion and transfer through a linear slide and expansion components, reducing process changeover time. In conjunction with a positioning mechanism, the expanded wheel rim is shaped to prevent wheel rim shrinkage or deviation. The dual-station design of the transfer robot enables simultaneous loading and unloading of the welding machine, avoiding idle waiting of the welding machine and deburring machine, resulting in efficient process connection and improved overall production efficiency.

[0036] This utility model's material handling mechanism integrates material handling and stacking, and combined with the unloading mechanism, forms a compact unloading flow path, shortens the wheel rim transfer path, and reduces workshop space occupation. Attached Figure Description

[0037] Figure 1 A schematic diagram of the structure of an automatic welding production line for automotive wheel rims provided by this utility model. Figure 1 ;

[0038] Figure 2 A schematic diagram of the structure of an automatic welding production line for automotive wheel rims provided by this utility model. Figure 2 ;

[0039] Figure 3 This is a schematic diagram of the installation structure of the feeding mechanism, the diameter expansion and transfer mechanism, and the positioning mechanism described in this utility model. Figure 1 ;

[0040] Figure 4 This is a schematic diagram of the structure of the diameter-expanding transfer mechanism described in this utility model;

[0041] Figure 5 This is a partial structural diagram of the diameter-expanding transfer mechanism described in this utility model. Figure 1 ;

[0042] Figure 6 This is a partial structural diagram of the diameter-expanding transfer mechanism described in this utility model. Figure 2 ;

[0043] Figure 7 This is a schematic diagram of the installation structure of the feeding mechanism, the diameter expansion and transfer mechanism, and the positioning mechanism described in this utility model. Figure 2 ;

[0044] Figure 8 This is a schematic diagram of the positioning mechanism described in this utility model;

[0045] Figure 9 This is a schematic diagram of the transfer robot described in this utility model;

[0046] Figure 10 This is a partial structural schematic diagram of the transfer robot described in this utility model;

[0047] Figure 11 This is a schematic diagram of the installation structure of the material handling mechanism and the material feeding mechanism described in this utility model;

[0048] Figure 12 This is a schematic diagram of the material handling mechanism described in this utility model;

[0049] Figure 13 This is a schematic diagram of the installation structure of the feeding mechanism and the material supply mechanism described in this utility model;

[0050] Figure 14 This is a schematic diagram of the feeding mechanism described in this utility model;

[0051] Figure 15 This is a top view of the feeding mechanism described in this utility model.

[0052] In the diagram: 1. Feeding mechanism, 11. Third roller conveyor, 12. First limiting frame, 13. Baffle, 14. Second limiting frame;

[0053] 2 feeding mechanism, 21 lifting component, 22 guiding component, 221 arc-shaped barrier, 222 guiding component;

[0054] 3. Expanding diameter transfer mechanism, 31. Transfer seat, 32. Linear slide, 33. Gantry frame, 34. Rotating assembly, 341. Rotating shaft, 342. First pulley, 343. Reducer, 344. Second pulley, 35. Expanding diameter assembly, 351. Three-jaw seat, 352. Displacement cylinder, 353. Inner support gripper, 354. Limiting component, 36. Lifting cylinder, 37. Displacement seat;

[0055] 4. Positioning mechanism, 41. Positioning seat, 42. Positioning block, 43. Rotary clamping cylinder;

[0056] 5 Transfer robot, 51 Multi-axis robot, 52 Gripper, 53 First picking component, 531 First picking claw, 532 First picking cylinder, 54 Second picking component, 541 Second picking claw, 542 Second picking cylinder, 543 Pressing head;

[0057] 6 welding machines;

[0058] 7. Deburring machine;

[0059] 8. Picking mechanism, 81. Picking seat, 82. Picking component, 821. Picking rack, 822. Lifting module, 823. Translation module, 824. Picking module, 83. Stacking component, 831. Stacking rack, 832. Lifting platform, 833. First roller line;

[0060] 9. Feeding mechanism, 91. Second roller line, 92. Arc-shaped turning roller line. Detailed Implementation

[0061] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0062] like Figure 1-3 As shown, this utility model provides an automatic welding production line for automotive wheel rims, comprising:

[0063] The feeding mechanism 1 feeds several open wheel rims in a stack;

[0064] The feeding mechanism 2 is located at the end of the feeding mechanism 1 and is used to feed the stacked wheel rims one by one.

[0065] The diameter expansion and transfer mechanism 3 is located above the feeding mechanism 2 and is used to expand the diameter of the wheel rims that are fed one by one and transfer them.

[0066] The positioning mechanism 4 is located at the end of the diameter expansion and transfer mechanism 3 and is used to position the wheel rim after diameter expansion and transfer.

[0067] The transfer robot 5 has two material handling stations, which are used to continuously pick up and transport the wheel rims on the positioning mechanism 4 to the welding machine 6, and pick up and transport the welded wheel rims on the welding machine 6 to the deburring machine 7. The welding machine 6 is used to weld the open wheel rims into a whole rim, and the deburring machine 7 is used to grind the welded part of the wheel rim.

[0068] The material handling mechanism 8 picks up the wheel rims that have been polished by the deburring machine 7 and stacks them.

[0069] The unloading mechanism 9 is located at the end of the picking mechanism 8 and is used to unload stacked wheel rims.

[0070] in,

[0071] The aforementioned diameter expansion and transfer mechanism 3 includes a transfer seat 31, a linear slide 32 mounted on the transfer seat 31, a gantry 33 slidably mounted on the linear slide 32, a rotating component 34 mounted on the gantry 33 and capable of vertical displacement, and a diameter expansion component 35 mounted at the end of the rotating component 34, the diameter expansion component 35 being arranged facing the feeding mechanism 2.

[0072] The working principle and beneficial effects of the above embodiments are as follows:

[0073] The feeding mechanism 1 of this utility model conveys stacks of open wheel rims to the feeding mechanism 2, and the feeding mechanism 2 conveys stacks of wheel rims one by one to the diameter expansion transfer mechanism 3.

[0074] The gantry 33 slides on the transfer seat 31 via the linear slide table 32, driving the rotating component 34 and the diameter expansion component 35 to move to the discharge end of the feeding mechanism 2. The rotating component 34 drives the diameter expansion component 35 to move vertically downward, so that the diameter expansion component 35 extends into the inside of the open wheel rim and expands the diameter. After the diameter expansion is completed, the rotating component 34 adjusts the opening position of the wheel rim, and the gantry 33 slides via the linear slide table 32 to transfer the expanded wheel rim to the positioning mechanism 4.

[0075] The positioning mechanism 4 precisely positions the expanded wheel rim. The two material handling stations of the transfer robot 5 operate sequentially. One station picks up the positioned wheel rim and transports it to the processing station of the welding machine 6. The other station picks up the wheel rim that has been welded on the welding machine 6 and transports it to the deburring machine 7. The welding machine 6 welds the open wheel rim interface into a closed whole rim. The deburring machine 7 grinds the welded area to ensure that the surface of the wheel rim is smooth.

[0076] The material handling mechanism 8 picks up the polished wheel rims from the deburring machine 7 and stacks them into a pile. The unloading mechanism 9 is located at the end of the material handling mechanism 8 and transports the stacked finished wheel rims to the outside of the production line to complete the entire processing flow.

[0077] This utility model relates to an automatic welding production line for automotive wheel rims. It features fully automated production, which reduces production costs. The diameter expansion component 35 expands the diameter and corrects the position of the wheel rim opening. Combined with the precise positioning of the positioning mechanism 4, it ensures that the subsequent wheel rim welding openings are aligned, reducing welding deviations and achieving high welding precision. After welding, the weld is treated by the deburring machine 7, which improves product quality.

[0078] This utility model designs an expansion and transfer mechanism 3, which integrates wheel rim expansion and transfer through a linear slide 32 and an expansion component 35, reducing process changeover time. The dual-station design of the transfer robot 5 enables simultaneous loading and unloading of the welding machine 6, avoiding idle waiting of the welding machine 6 and the deburring machine 7, resulting in efficient process connection and improved overall production efficiency.

[0079] In one embodiment,

[0080] like Figure 4-6 As shown, a lifting cylinder 36 is installed on the gantry frame 33. The output end of the lifting cylinder 36 is connected to a displacement seat 37, and the rotating assembly 34 is installed on the displacement seat 37.

[0081] The rotating assembly 34 includes a rotating shaft 341 mounted on a displacement seat 37, a first pulley 342 mounted on the rotating shaft 341, a reducer 343 mounted on the displacement seat 37, and a second pulley 344 mounted on the output end of the reducer 343 and connected to the first pulley 342 in a transmission. The first pulley 342 rotates while driving the rotating shaft 341 to rotate.

[0082] The aforementioned expansion assembly 35 includes a three-jaw seat 351 mounted at the end of the rotating shaft 341, a displacement cylinder 352 mounted on the three-jaw seat 351, an inner support jaw 353 mounted on the output end of the displacement cylinder 352, and a limiting member 354 mounted on the three-jaw seat 351 and arranged facing the inner support jaw 353. The inner support jaw 353 is moved by the lifting cylinder 36 until its lower surface contacts the wheel rim. The three sets of displacement cylinders 352 drive the inner support jaw 353 connected to them to move, expanding the wheel rim inward until the inner support jaw 353 touches the limiting member 354, thereby expanding the wheel rim to the specified size.

[0083] When the inner support gripper 353 moves down with the lifting cylinder 36 to contact the wheel rim, the displacement cylinder 352 pushes the inner support gripper 353 to contact the inner wall of the wheel rim and expand it outward until the inner support gripper 353 touches the limiting member 354 and stops moving, ensuring that the wheel rim is accurately expanded to the preset diameter. In order to facilitate the accurate welding of the opening position of the wheel rim by the subsequent welding machine 6, the diameter expansion component 35 rotates with the rotating shaft 341, driving the expanded wheel rim to rotate until the opening of the wheel rim is aligned with the preset position. Then, the expanded wheel rim is transported to the positioning mechanism 4 by the linear slide 32 so that the transfer robot 5 can grab and transport it for welding.

[0084] In one embodiment,

[0085] like Figure 7-8 As shown, the positioning mechanism 4 includes a positioning seat 41 that is mounted on the transfer seat 31 and can be raised and lowered, positioning blocks 42 that are evenly distributed around the periphery of the positioning seat 41, and a rotary pressing cylinder 43 mounted on the positioning block 42.

[0086] Two rotary clamping cylinders 43 are arranged, which are mounted on two positioning blocks 42 near the opening end of the wheel rim;

[0087] When the expansion and transfer mechanism 3 transfers the expanded and calibrated wheel rim to the positioning mechanism 4, the positioning seat 41 is first adjusted to the appropriate height, and the wheel rim is placed on the positioning blocks 42 evenly distributed around the circumference of the positioning seat 41. The two rotary pressing cylinders 43 rotate synchronously to press down on the wheel rim, fix and limit it, and prevent the wheel rim from shrinking or running off course.

[0088] In one embodiment,

[0089] like Figure 9-10 As shown, the above-mentioned transfer robot 5 includes a multi-axis robot 51, a Z-shaped gripper 52 mounted on the execution end of the multi-axis robot 51, and a first material handling component 53 and a second material handling component 54 mounted at both ends of the gripper 52. The first material handling component 53 includes a first material handling claw 531 slidably mounted on the gripper 52. The first material handling claw 531 is driven by a first material handling cylinder 532 to move along the gripper 52. The wheel rim is placed between the end of the gripper 52 and the first material handling claw 531. The first material handling claw 531 is driven by the first material handling cylinder 532 to move towards the end of the gripper 52 and clamp the wheel rim.

[0090] The second material handling component 54 includes a second material handling claw 541 installed at the other end of the clamping seat 52, a second material handling cylinder 542 installed on the clamping seat 52, and a pressing head 543 installed on the clamping seat 52 and connected to the output end of the second material handling cylinder 542. The pressing head 543 moves closer to or away from the second material handling claw 541 under the push of the second material handling cylinder 542.

[0091] When the multi-axis robot 51 moves above the positioning mechanism 4, the first picking cylinder 532 drives the first picking claw 531 to slide along the gripping seat 52. The wheel is placed between the end of the gripping seat 52 and the first picking claw 531. Then the first picking claw 531 moves closer to the end and clamps the wheel, achieving a stable grip through the horizontal clamping force.

[0092] Next, the multi-axis robot 51 moves above the welding machine 6, the second picking claw 541 is placed at the bottom of the welded wheel rim, and the second picking cylinder 542 pushes the pressing head 543 downward until the pressing head 543 cooperates with the second picking claw 541 to clamp the wheel rim from the top and bottom, completing the gripping. The multi-axis robot 51, through multi-degree-of-freedom motion, accurately places the wheel rim to be welded gripped by the first picking component 53 into the processing position of the welding machine 6, and transfers the welded wheel rim gripped by the second picking component 54 to the feeding position of the deburring machine 7. The two workstations work simultaneously, greatly improving efficiency.

[0093] In one embodiment,

[0094] like Figure 11-12 As shown, the material handling mechanism 8 is located between the deburring machine 7 and the unloading mechanism 9, and includes a material handling seat 81, a material handling component 82 and a stacking component 83 mounted on the material handling seat 81.

[0095] The aforementioned material handling assembly 82 includes a material handling frame 821, a lifting module 822 mounted on the material handling frame 821, a translation module 823 mounted on the lifting module 822, and a material handling module 824 mounted on the translation module 823;

[0096] The stacking assembly 83 includes a stacking frame 831, a lifting platform 832 mounted on the stacking frame 831, and a first roller line 833 mounted on the lifting platform 832.

[0097] The lifting module 822 drives the translation module 823 and the material picking module 824 to move up and down, adjusting the material picking height to match the discharge position of the deburring machine 7; the translation module 823 drives the material picking module 824 to move horizontally, aligning it with the wheel rim on the deburring machine 7. The material picking module 824 is a pneumatic gripper, which approaches the wheel rim under the drive of the translation module 823, clamps the polished wheel rim and rises with the lifting module 822. The translation module 823 drives the wheel rim to move above the stacking assembly 83.

[0098] In the initial state, the lifting platform 832 is located at a higher position on the stacking rack 831. Each time a wheel rim is placed, the lifting platform 832 lowers by the thickness of one wheel rim to reserve space for the next wheel rim, until the preset number of wheel rims is stacked. Then, the stacked wheel rims are transported to the input end of the unloading mechanism 9 through the first roller line 833. The material handling mechanism 8 integrates material handling and stacking, has a stable structure, a smooth process, shortens the wheel rim turnover time, and improves overall efficiency.

[0099] In one embodiment,

[0100] For example Figure 11 As shown, the above-mentioned feeding mechanism 9 includes a second roller line 91 that is connected to the first roller line 833, and an arc-shaped deflecting roller line 92 installed at the end of the second roller line 91;

[0101] The feeding mechanism 7 is equipped with a second roller line 91 and an arc-shaped steering roller line 92 connected to the second roller line 91, which transports the stacked finished wheel rims to the outside of the production line.

[0102] In one embodiment,

[0103] like Figure 13 As shown, the above-mentioned feeding mechanism 1 includes a third roller line 11, an adjustable first limiting frame 12 installed on both sides of the third roller line 11, and the stacked wheel rims are placed in the first limiting frame 12 and continuously conveyed to the feeding mechanism 2 along with the third roller line 11.

[0104] At the beginning of the third roller line 11, there is a baffle 13 arranged perpendicular to its conveying direction and a second limiting frame 14 arranged perpendicular to the baffle 13. The second limiting frame 14 is flush with the limiting surface of the first limiting frame 12 on one side. The operator loads the material on the side away from the second limiting frame 14. When loading the material, the wheel rims are stacked against the baffle 13 and the second limiting frame 14.

[0105] The operator feeds the wheel rims at the beginning of the third roller line 11. The wheel rims are stacked against the baffle 13 and the second limiting frame 14 at the beginning to ensure that the edges of each stack of wheel rims are aligned. After stacking, the third roller line 11 is started. The rollers rotate to drive the stack of wheel rims to be conveyed towards the feeding mechanism 2. The first limiting frames 12 on both sides extend along the length of the third roller line 11 to form a channel-like constraint structure, which continuously guides the wheel rims during the conveying process and prevents the stack from tilting due to vibration or inertia, thus realizing batch feeding of wheel rims.

[0106] In one embodiment,

[0107] like Figure 14-15 As shown, the feeding mechanism 2 is installed in the transfer seat 31, and the third roller line 11 extends into the transfer seat 31. The feeding mechanism 2 includes a lifting component 21 installed below the third roller line 11. The lifting component 21 contacts the lowest wheel rim and lifts the wheel rims upward one by one to contact the diameter expansion component 35.

[0108] The feeding mechanism 2 also includes a guide assembly 22 installed on the third roller line 11. The guide assembly 22 includes an arc-shaped barrier 221 that contacts the wheel rim and is arranged along the height of the stacked wheel rims, and a guide 222 that is installed on the transfer seat 31 and can extend inward to contact the wheel rim.

[0109] The third roller line 11 of the feeding mechanism 1 extends into the transfer seat 31, and the stacked wheel rims are conveyed to the working area of ​​the feeding mechanism 2 along the roller line; the arc-shaped barrier 221 is arranged along the height direction of the stacked wheel rims, and its arc surface fits with the outer circle of the wheel rim, forming a circumferential constraint on the entire stack of wheel rims to prevent stacking from being skewed; the guide 222 extends inward from one side of the transfer seat 31 and contacts the outer surface of the wheel rim, further restricting the displacement of the wheel rim and ensuring that the stacking axis of the wheel rims is consistent with the force direction of the lifting component 21.

[0110] The lifting component 21 is installed below the third roller line 11. Its output end extends upward and contacts the lowest roller in the stack of rollers. It moves up one roller at a time and continuously feeds material to the expansion and transfer mechanism 3.

[0111] In summary:

[0112] This utility model discloses an automatic welding production line for automotive wheel rims, which integrates batch feeding, individual feeding, diameter expansion and transfer, processing, stacking and batch unloading of wheel rims. The entire process is automated, continuous and efficient, with precise positioning and high precision in finished product processing.

[0113] This utility model's feeding mechanism automatically conveys stacked wheel rims, enabling batch feeding. The feeding mechanism uses lifting and guiding components to separate the wheel rims one by one and precisely connect them with the diameter expansion and transfer mechanism. Through multiple limit and guiding designs, it ensures stable positioning of the wheel rims during conveying and transfer.

[0114] This utility model designs an expansion and transfer mechanism, which integrates wheel rim expansion and transfer through a linear slide and expansion components, reducing process changeover time; the dual-station design of the transfer robot enables simultaneous loading and unloading of the welding machine, avoiding idle waiting of the welding machine and deburring machine, resulting in efficient process connection and improved overall production efficiency.

[0115] This utility model's material handling mechanism integrates material handling and stacking, and combined with the unloading mechanism, forms a compact unloading flow path, shortens the wheel rim transfer path, and reduces workshop space occupation.

[0116] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The terms "front," "back," "left," and "right" used in the text are not specific and are mainly for more intuitive illustration of the technical solution, and do not constitute a limitation. Those skilled in the art should understand that the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made according to the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An automated welding production line for automotive wheel rims, characterized in that: include The feeding mechanism (1) feeds several open wheel rims in a stack; The feeding mechanism (2) is located at the end of the feeding mechanism (1) and is used to feed the stacked wheel rims one by one; The diameter expansion and transfer mechanism (3) is placed above the feeding mechanism (2) and is used to expand the diameter of the wheel rims that are fed one by one and transfer them. The positioning mechanism (4) is located at the end of the diameter expansion and transfer mechanism (3) and is used to position the wheel rim after diameter expansion and transfer. The transfer robot (5) is equipped with two material handling stations, which are used to continuously pick up and transport the wheel rims on the positioning mechanism (4) to the welding machine (6), and pick up and transport the welded wheel rims on the welding machine (6) to the deburring machine (7). The welding machine (6) is used to weld the open wheel rims into a whole rim, and the deburring machine (7) is used to grind the welded part of the wheel rim. The material handling mechanism (8) takes the wheel rims that have been polished by the deburring machine (7) and stacks them; The unloading mechanism (9) is located at the end of the picking mechanism (8) and is used to unload the stacked wheel rims. in, The diameter expansion and transfer mechanism (3) includes a transfer seat (31), a linear slide (32) mounted on the transfer seat (31), a gantry frame (33) slidably mounted on the linear slide (32), a rotating component (34) mounted on the gantry frame (33) and capable of vertical displacement, and a diameter expansion component (35) mounted at the end of the rotating component (34), wherein the diameter expansion component (35) is arranged facing the feeding mechanism (2).

2. The automatic wheel rim welding production line for automobiles according to claim 1, characterized in that: A lifting cylinder (36) is installed on the gantry (33), and the output end of the lifting cylinder (36) is connected to a displacement seat (37). The rotating assembly (34) is installed on the displacement seat (37). The rotating assembly (34) includes a rotating shaft (341) mounted on a displacement seat (37), a first pulley (342) mounted on the rotating shaft (341), a reducer (343) mounted on the displacement seat (37), and a second pulley (344) mounted on the output end of the reducer (343) and connected to the first pulley (342) in a transmission. The first pulley (342) rotates while driving the rotating shaft (341) to rotate. The diameter expansion assembly (35) includes a three-jaw seat (351) mounted at the end of the rotating shaft (341), a displacement cylinder (352) mounted on the three-jaw seat (351), an inner support jaw (353) mounted on the output end of the displacement cylinder (352), and a limiting member (354) mounted on the three-jaw seat (351) and facing the inner support jaw (353). The inner support jaw (353) is displaced by the lifting cylinder (36) until its lower surface contacts the wheel rim. The three sets of displacement cylinders (352) respectively drive the inner support jaw (353) connected to them to displace, pushing the wheel rim inward until the inner support jaw (353) touches the limiting member (354). The rotating assembly (34) drives the diameter expansion assembly (35) and the wheel rim on it to rotate until the opening of the wheel rim is in a set position.

3. The automatic wheel rim welding production line for automobile as claimed in claim 1, wherein: The positioning mechanism (4) includes a positioning seat (41) that is mounted on a transfer seat (31) and is liftable, positioning blocks (42) that are evenly distributed around the periphery of the positioning seat (41), and a rotary pressing cylinder (43) mounted on the positioning block (42). The rotary pressing cylinder (43) rotates and presses down the wheel rim placed on the positioning block (42). Two rotary clamping cylinders (43) are arranged, which are set on two positioning blocks (42) near the opening end of the wheel rim.

4. The automatic wheel rim welding production line for automobile as claimed in claim 1, wherein: The transfer robot (5) includes a multi-axis robot (51), a zigzag gripper (52) mounted on the execution end of the multi-axis robot (51), and a first material handling component (53) and a second material handling component (54) mounted at both ends of the gripper (52). The first picking member (53) includes a first picking claw (531) slidably mounted on the gripping seat (52). The first picking claw (531) is driven by the first picking cylinder (532) to move along the gripping seat (52). The wheel rim is placed between the end of the gripping seat (52) and the first picking claw (531). The first picking claw (531) is driven by the first picking cylinder (532) to move towards the end of the gripping seat (52) and clamp the wheel rim. The second material handling component (54) includes a second material handling claw (541) installed at the other end of the clamping seat (52), a second material handling cylinder (542) installed on the clamping seat (52), and a pressing head (543) installed on the clamping seat (52) and connected to the output end of the second material handling cylinder (542). The pressing head (543) moves closer to or away from the second material handling claw (541) under the push of the second material handling cylinder (542).

5. The automatic wheel rim welding production line for automobile as claimed in claim 1, wherein: The material handling mechanism (8) is located between the deburring machine (7) and the unloading mechanism (9), and includes a material handling seat (81), a material handling component (82) and a stacking component (83) mounted on the material handling seat (81); The material handling assembly (82) includes a material handling rack (821), a lifting module (822) mounted on the material handling rack (821), a translation module (823) mounted on the lifting module (822), and a material handling module (824) mounted on the translation module (823); The stacking assembly (83) includes a stacking rack (831), a lifting platform (832) mounted on the stacking rack (831), and a first roller line (833) mounted on the lifting platform (832).

6. The automatic wheel rim welding production line for vehicles according to claim 5, characterized in that: The feeding mechanism (9) includes a second roller line (91) that is connected to the first roller line (833), and an arc-shaped deflecting roller line (92) installed at the end of the second roller line (91).

7. The automatic wheel rim welding production line for automobile as claimed in claim 1, wherein: The feeding mechanism (1) includes a third roller line (11), an adjustable first limiting frame (12) installed on both sides of the third roller line (11), and stacked wheel rims placed in the first limiting frame (12) and continuously conveyed to the feeding mechanism (2) along with the third roller line (11). At the beginning of the third roller line (11), there is a baffle (13) arranged perpendicular to its conveying direction, and a second limiting frame (14) arranged perpendicular to the baffle (13). The second limiting frame (14) is flush with the limiting surface of the first limiting frame (12) on one side.

8. The automatic wheel rim welding production line for vehicles according to claim 7, characterized in that: The feeding mechanism (2) is installed inside the transfer seat (31), and the third roller line (11) extends into the transfer seat (31). The feeding mechanism (2) includes a lifting component (21) installed below the third roller line (11). The lifting component (21) contacts the lowest wheel rim and lifts the wheel rims one by one to contact the diameter expansion component (35). The feeding mechanism (2) further includes a guide assembly (22) mounted on the third roller line (11), the guide assembly (22) including an arc-shaped barrier (221) that contacts the wheel rim and is arranged along the stacked wheel rim height, and a guide (222) mounted on the transfer seat (31) and extending inward to contact the wheel rim.

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