A production line for steel hinge bushings

Abstract

This invention provides a production line for steel hinge bushings, comprising a sheet material feeding system, a blanking device, a sheet material transfer system, a rolling device, a linkage conveying system, and a flanging and shaping device. The sheet material feeding system includes a feeding device for placing and fixing sheet materials, a servo feeding device for conveying the sheet materials to the blanking device, and a sheet material conveying device. The blanking device includes a press body, a blanking die mounted on the press body, an inlet detection component, and an outlet traction component. The outlet traction component includes an upper roller assembly that can move up and down and a lower roller assembly where the roller is the main power roller. The sheet material transfer system transfers the sheet materials to the rolling device for rolling. The linkage conveying system sequentially transfers the rolled material to the flanging component, the shaping component, and the dropping trough of the flanging and shaping device. This steel hinge bushing production line solves the problems of high labor costs and low production efficiency in the preparation of steel hinge bushings in the prior art.

Description

Technical Field

[0001] This invention relates to the field of automotive parts manufacturing technology, and in particular to a production line for a steel hinge bushing. Background Technology

[0002] In the current automotive manufacturing industry, the door hinge assembly is a safety feature that must be installed in mid-range and high-end sedans. Installed at the top and bottom of the door, it has two basic functions: first, connecting the car body and the door and ensuring and maintaining the door's position relative to the body; second, ensuring and facilitating the opening and closing of the door. The connection between the door panel and the body panel in the hinge assembly is achieved through pin riveting. The bushing that mates with the pin is made of metal mesh and high-polymer wear-resistant material. It is pressed together with the door panel using a pressing tool and then riveted to the pin to create a certain torque. This torque ensures wear resistance and smooth operation during the hinge's opening and closing process, thus contributing to noise reduction and extending the service life of the door structure.

[0003] The fabrication of steel hinge bushings typically involves four processes: blanking, rolling, flanging, and shaping. Current technology for producing steel hinge bushings employs a single-process, zoned production method followed by centralized transfer between processes. Each process requires manual feeding and equipment operation, while inter-process transfer necessitates manual handling. This results in high labor costs and high manual labor intensity, while the low level of automation makes it difficult to improve production efficiency. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a production line for steel hinge bushings, which aims to solve the problems of high labor costs and low production efficiency in the preparation of steel hinge bushings in the prior art.

[0005] The production line for steel hinge bushings proposed in this invention includes a sheet material feeding system, a feeding device, a sheet material transfer system, a rolling device, a linkage conveying system, and an edge-forming device.

[0006] The sheet metal feeding system includes a feeding device for placing and fixing sheet metal, a servo feeding device for conveying sheet metal to the unloading device, and a sheet metal handling device for transferring sheet metal from the feeding device to the servo feeding device. The unloading device includes a press body, an unloading die mounted on the press body, an inlet detection component mounted on the inlet of the unloading die, and an outlet traction component mounted on the outlet of the unloading die. The outlet traction component includes an upper roller assembly and a lower roller assembly mounted on the same straight line. The upper roller assembly can move up and down, and the roller of the lower roller assembly is the main power roller. The sheet metal transfer system is used to transfer sheet metal to a rolling device for rolling. The linkage conveying system is used to sequentially transfer the rolled material to the flanging assembly, the shaping assembly, and the dropping trough of the flanging and shaping device.

[0007] The aforementioned production line for steel hinge bushings uses a feeding device to fix the sheet metal in a preset position, and a sheet metal handling device to transport the sheet metal to a servo feeding device. Then, under the action of the servo feeding device, the sheet metal continuously passes through the inlet detection component and enters the blanking die for blanking. Since the servo feeding device cannot completely feed the sheet metal into the blanking die, a discharge traction component is also provided. This component clamps the partially blanked sheet metal front end through upper and lower roller components, and the main power roller of the lower roller component rotates, driving the sheet metal to continue moving forward. Furthermore, the blanked sheet metal is moved to a rolling device for rolling processing by a sheet metal transfer system. Then, a linkage conveying system sequentially transfers the rolled material to a flanging component, a shaping component, and a blanking trough for flanging and shaping processing, and finally, the processed parts are transferred out of the production line. Through the combined action of multiple devices on the production line, the processing of steel hinge bushings can be completed fully automatically from sheet metal to finished product in one go. Therefore, this invention solves the problems of high labor costs and low production efficiency in the preparation of steel hinge bushings in the prior art.

[0008] In addition, the production line for the steel hinge bushing proposed according to the present invention may also have the following additional technical features:

[0009] Preferably, the servo feed device includes a feed panel arranged in parallel for placing the sheet metal, a transition positioning component disposed below the feed panel and movable up and down, a pressure plate component disposed on both sides of the feed panel, and a gripping feed component disposed between the two feed panels.

[0010] The transition positioning component is used to assist the sheet material handling device in fixing the sheet material on the feed panel, the pressure plate component is used to flatten the sheet material on the feed panel, and the gripping feed component is used to push the flattened sheet material to the unloading mold for unloading.

[0011] Preferably, the sheet material transfer system includes a stepping conveyor assembly, a rotary pitch-changing assembly, and a sheet material handling assembly;

[0012] The blanking die includes a punch that is connected to the press body and can move up and down, and a die disposed below the punch. The stepping conveyor assembly includes a conveyor belt, one end of which is placed below the die.

[0013] The rotary pitch-adjusting component is used to adjust the orientation and spacing of the sheet material on the conveyor belt, and the sheet material handling component is used to handle the adjusted sheet material to the rolling device.

[0014] Preferably, the rolling device includes a rolling machine and a feeding assembly disposed on the rolling machine. The feeding assembly includes a sheet placement plate, side guards disposed on both sides of the sheet placement plate, a push rod disposed at one end of the sheet placement plate, and a first driving component connected to the push rod. The rolling machine includes a rubber wheel and a mandrel disposed above the rubber wheel that can move up and down. The sheet placement plate is disposed between the rubber wheel and the mandrel and its bottom is adapted to the rubber wheel.

[0015] Preferably, the linkage conveying system includes a roll material conveying component and a rotating component; the roll material conveying component is used to transfer the roll material from the mandrel to the rotating component, and the rotating component is used to change the orientation of the roll material from horizontal to vertical.

[0016] Preferably, the linkage handling system further includes a linkage transfer component, which includes a first robotic arm component, a second robotic arm component, and a third robotic arm component arranged in parallel, and linkage components respectively connecting the first robotic arm component, the second robotic arm component, and the third robotic arm component. The first robotic arm component is used to transfer the roll material from the rotating component to the flanging component, the second robotic arm component is used to transfer the flanged roll material from the flanging component to the shaping component, and the third robotic arm component is used to transfer the shaped roll material from the shaping component to the dropping chute. The linkage components are used to drive the first robotic arm component, the second robotic arm component, and the third robotic arm component to move vertically or horizontally simultaneously.

[0017] Preferably, the first robotic arm component includes two symmetrically arranged first pneumatic grippers, the notch of which is circular when the two first pneumatic grippers are engaged; the second robotic arm component includes two symmetrically arranged second pneumatic grippers and a fixing block disposed between the two second pneumatic grippers, the notch of which is circular with triangular ends when the two second pneumatic grippers are engaged; and the thickness of the second pneumatic grippers is less than that of the first pneumatic grippers.

[0018] Preferably, the rotary pitch-changing assembly includes four parallel rotating shafts, a vacuum suction cup component disposed at the bottom of the rotating shaft, a connector connected to the side of the rotating shaft, a pitch-changing plate disposed on one side of the rotating shaft, and a second driving component connected to the pitch-changing plate. The pitch-changing plate is provided with symmetrically inclined pitch-changing grooves. The connector includes a connecting rod disposed in the pitch-changing groove. The second driving component is used to drive the pitch-changing plate to move, so that the connecting rod moves along the pitch-changing groove, thereby causing the four rotating shafts to move closer to or further away from each other.

[0019] Preferably, the rotating shaft is further provided with a gear, and the side of the rotating shaft is provided with a rack adapted to the gear, so that the second driving component drives the four rotating shafts to move closer or further away while driving the four rotating shafts to rotate.

[0020] Preferably, the stepping conveyor assembly further includes a guide component disposed above the conveyor belt and behind the rotary pitch component. The guide component includes two parallel grippers and an inclined block disposed behind the grippers. The two grippers are used to make the long side of the sheet parallel to the length direction of the conveyor belt. The inclined block is used to perform secondary guidance on the sheet and to stop the sheet. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the production line for the steel hinge bushing proposed in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the sheet metal feeding system proposed in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the servo feed device proposed in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the gripping and feeding component proposed in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the feeding device proposed in one embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the feeding device hidden behind the press body in one embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the sheet material transfer system proposed in one embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of a stepping conveyor assembly proposed in one embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of a rotary pitch component proposed in one embodiment of the present invention;

[0030] Figure 10 for Figure 9 Exploded view;

[0031] Figure 11 This is a schematic diagram of the sheet material handling assembly proposed in one embodiment of the present invention;

[0032] Figure 12 This is a schematic diagram of the rolling device proposed in one embodiment of the present invention;

[0033] Figure 13 for Figure 12 A magnified view of a portion at point A;

[0034] Figure 14 This is a schematic diagram of the linkage transport system proposed in one embodiment of the present invention;

[0035] Figure 15 This is a schematic diagram of the structure of a roll material handling assembly proposed in one embodiment of the present invention;

[0036] Figure 16 This is a schematic diagram of the structure of a rotating component proposed in one embodiment of the present invention;

[0037] Figure 17 This is a schematic diagram of the structure of the linkage transfer component proposed in one embodiment of the present invention;

[0038] Figure 18 for Figure 17 A bottom view;

[0039] Explanation of key component symbols:

[0040]

[0041]

[0042] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0043] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0044] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0046] Please see Figures 1 to 18 The diagram shows a production line for a steel hinge bushing according to an embodiment of the present invention, comprising a sheet material feeding system 10, a feeding device 20, a sheet material transfer system 30, a rolling device 40, a linkage conveying system 50, and a flanging and shaping device 60, wherein:

[0047] The sheet material feeding system 10 includes a feeding device 11 for placing and fixing sheet materials, a servo feeding device 12 for conveying sheet materials to the unloading device 20, and a sheet material handling device 13 for transferring sheet materials from the feeding device 11 to the servo feeding device 12. The unloading device 20 includes a press body 21, an unloading mold 22 disposed on the press body 21, an inlet detection component 23 disposed at the inlet of the unloading mold 22, and an outlet traction component 24 disposed at the outlet of the unloading mold 22. The outlet traction component 24 includes an upper roller assembly 241 and a lower roller assembly 242 disposed on the same straight line. The upper roller assembly 241 can move up and down, and the roller of the lower roller assembly 242 is the main power roller. The sheet material transfer system 30 is used to transfer the sheet material to the rolling device 40 for rolling. The linkage conveying system 50 is used to transfer the rolled material sequentially to the flanging component 61, the shaping component 62, and the dropping chute 63 of the flanging and shaping device 60.

[0048] Understandably, the sheet metal is fixed in a preset position by the feeding device 11 and transported to the servo feeding device 12 by the sheet metal handling device 13. Then, under the action of the servo feeding device 12, the sheet metal continuously passes through the inlet detection component 23 and enters the unloading mold 22 for unloading. Since the servo feeding device 12 cannot completely input the sheet metal into the unloading mold 22, an outlet traction component 24 is also provided. The upper roller component 241 and the lower roller component 242 clamp the front end of the partially unloaded sheet metal, and the main power roller of the lower roller component 242 rotates to drive the sheet metal to continue moving forward. In addition, the unloaded sheet metal is moved to the rolling device 40 for rolling processing under the action of the sheet metal transfer system 30. Then, the linked conveying system 50 transfers the rolled material to the flanging component 61, the shaping component 62 and the dropping groove 63 in sequence for flanging and shaping processing, and the processed parts are transferred out of the production line. By combining the work of multiple devices on the production line, the processing of bushings for steel hinges can be completed fully automatically from sheet metal to finished product in one go. Therefore, this invention solves the problems of high labor costs and low production efficiency in the preparation of steel hinge bushings in existing technologies.

[0049] It should be noted that the feeding device 11 typically includes a vertically movable work platform. The work platform is equipped with movably connected limit rods. The sheet metal is placed on the work platform and limited by multiple limit rods, fixing the sheet metal in a specific area. Furthermore, in specific implementations, the side of the work platform can be connected to a vertical slide rail via a slider, and the work platform can be moved up and down by an electric push cylinder at the bottom to facilitate the transfer of the sheet metal by the sheet metal handling device 13. The bottom of the work platform is also equipped with sensing devices, such as photoelectric sensors, to detect whether there is sheet metal on the work platform, ensuring a continuous supply of sheet metal. Specifically, the sheet metal handling device 13 can employ a pneumatic handling robot, driven by a rodless cylinder for translational movement and guided by a horizontal guide rail. The robot moves up and down via a sliding cylinder and uses a vacuum suction cup to pick up the sheet metal. Additionally, adjustable hydraulic buffers at both ends of the horizontal guide rail provide cushioning to prevent excessive shaking during robot movement, which could cause the sheet metal to fall.

[0050] Specifically, the inlet detection component 23 is used to detect and confirm that the sheet metal has entered the unloading device 20 for subsequent unloading processes. Furthermore, the inlet detection component 23 can be a funnel-shaped box with a sensor mounted on it. The funnel-shaped box guides and limits the sheet metal, ensuring it enters the unloading mold 22 straight for unloading. In addition to detecting the entry time and speed of the sheet metal for subsequent unloading, the sensor can also detect the condition of the sheet metal, such as whether there are gaps, to adjust the unloading position and ensure that all unloaded sheets are high-quality and complete. Furthermore, when the sheet metal is pushed into the unloading device 20 by the servo feed device 12, due to the problem of stroke and interference, the servo feed device 12 cannot push the tail of the sheet metal completely into the unloading mold 22. Therefore, after the sheet metal is partially unloaded, the upper roller assembly 241 is driven to move downward to cooperate with the lower roller assembly 242 to clamp the sheet metal. The rotation of the lower roller assembly 242 drives the sheet metal to continue moving, so that the sheet metal can completely pass through the unloading mold 22 and be unloaded.

[0051] By way of example, and not limitation, in some optional embodiments, the servo feed device 12 includes a feed panel 121 arranged in parallel for placing sheet metal, a transition positioning component 122 disposed below the feed panel 121 and movable up and down, a pressure plate component 123 disposed on both sides of the feed panel 121, and a gripping feed component 124 disposed between the two feed panels 121. The transition positioning component 122 assists the sheet metal handling device 13 in fixing the sheet metal on the feed panel 121, the pressure plate component 123 flattens the sheet metal on the feed panel 121, and the gripping feed component 124 pushes the flattened sheet metal to the unloading mold 22 for unloading. Specifically, the two feed panels 121 are arranged in parallel with a gap in between, the gripping feed component 124 is disposed in the gap, the transition positioning component 122 can be multiple vacuum suction cups that can move up and down, and the feed panel 121 is provided with a clearance groove to avoid the vacuum suction cups. The pressure plate assembly 123 can be a pressure plate connected to the feed panel 121 via a hinge and a cylinder that drives the pressure plate to rotate. The gripping feed assembly 124 can be a gripper and a cylinder that drives the gripper to move. When the sheet metal is moved above the feed panel 121 by the sheet metal handling device 13, the transition positioning assembly 122 helps to fix the sheet metal on the feed panel 121 to prevent the sheet metal from shifting. Then, the cylinder drives the pressure plate to rotate, causing the pressure plate to flip and press on the sheet metal, making the warped part of the sheet metal flat. Then, the gripping feed assembly 124 grasps the sheet metal, and then the transition positioning assembly 122 releases the sheet metal, and the gripping feed assembly 124 pushes the sheet metal into the unloading mold 22. In addition, since the sheet material handling device 13 only partially fixes the sheet material when handling it, the front and rear ends of the sheet material will droop and bend. Therefore, an arc-shaped anti-jamming plate is provided above the gripping and feeding component 124, so that the front end of the sheet material will not directly interfere with the gripping and feeding component 124 during transfer, but will move smoothly to the feed panel 121 under the action of the arc-shaped anti-jamming plate.

[0052] Additionally, the sheet material transfer system 30 includes a stepping conveyor assembly 31, a rotary pitch-changing assembly 32, and a sheet material handling assembly 33. The blanking die 22 includes a punch 221 connected to the press body 21 and capable of moving up and down, and a die 222 disposed below the punch 221. The stepping conveyor assembly 31 includes a conveyor belt 311, one end of which is positioned below the die 222. The rotary pitch-changing assembly 32 is used to adjust the orientation and spacing of the sheet material on the conveyor belt 311, and the sheet material handling assembly 33 is used to transport the adjusted sheet material to the rolling device 40. Through the cooperation of the up-and-down moving punch 221 and the die 222, the sheet material can be stamped into individual sheets. In specific implementations, the sheet material is usually parallelogram-shaped. Since the sheet material is usually a long strip structure, in order to allow the sheet material to be cut into as many sheets as possible, the die 222 is usually provided with multiple parallel quadrilateral grooves with their long sides parallel to the length direction of the sheet material, and the spacing between the grooves is very small. After the sheet material is unloaded, it continues to move along its length into the waste trough. The sheet material moves along its width under the action of the stepping conveyor assembly 31. This arrangement is to prevent the production line from becoming too long, thus facilitating the layout of the production line. In addition, due to the small spacing between the grooves, the spacing between the sheet materials falling onto the conveyor belt 311 is also very small. Furthermore, due to the transmission direction, the sheet materials are transported with their long sides perpendicular to the length of the conveyor belt 311 during transmission. The length of the conveyor belt 311 is aligned with the rubber roller 411 of the rolling machine 41, and the long side of the sheet material needs to be aligned with the rubber roller 411 during rolling. Therefore, the sheet material on the conveyor belt 311 needs to be adjusted by rotating the pitch-changing assembly 32 to ensure that the long side of the sheet material is aligned with the rubber roller 411 and that the spacing between the sheet materials is appropriate.

[0053] Specifically, the rotary pitch assembly 32 includes four parallel rotating shafts 321, a vacuum suction cup component 322 disposed at the bottom of the rotating shafts 321, a connector 323 connected to the side of the rotating shafts 321, a pitch plate 324 disposed on one side of the rotating shafts 321, and a second drive component 325 connected to the pitch plate 324. The pitch plate 324 is provided with symmetrically inclined pitch grooves 3241. The connector 323 includes a connecting rod 3231 disposed in the pitch groove 3241. The second drive component 325 is used to drive the pitch plate 324 to move, so that the connecting rod 3231 moves along the pitch groove 3241, causing the four rotating shafts 321 to move closer to or further away from each other. Initially, the four rotating shafts 321 are relatively close together, and the connecting rod 3231 is located at the bottom of one end of the pitch-changing slide 3241. Under the action of the second driving component 325, the pitch-changing plate 324 moves forward. Since the pitch-changing slide 3241 is symmetrically arranged, when the pitch-changing plate 324 moves back and forth relative to the connecting rod 3231, the connecting rod 3231 will move left and right along the pitch-changing slide 3241, thereby causing the four rotating shafts 321 to separate from each other. In addition, since the pitch-changing slide 3241 has different inclination angles, after the pitch-changing plate 324 moves a certain distance forward and backward, the four rotating shafts 321 move different distances to the left and right. Therefore, the distance between the rotating shafts 321 can be adjusted by adjusting the inclination angle and length of the pitch-changing slide 3241. The vacuum suction cup component 322 at the bottom of the rotating shaft 321 can be used to grip the sheet material, thereby adjusting the spacing between adjacent sheets.

[0054] Furthermore, the rotating shaft 322 is also equipped with a gear, and a rack adapted to the gear is provided on the side of the rotating shaft, so that the second driving component 325 drives the four rotating shafts 322 to rotate while driving them to move closer or further away. By setting the gear 326 and rack 327, the rotating shafts 322 rotate when they move closer or further away from each other. By setting the number of teeth and the tooth pitch of the gear 326 and rack 327, the rotating shafts 322 can rotate at different angles under the same displacement. Thus, the gear 326 and rack 327 can be adaptively adjusted according to the distance and angle of rotation required by each rotating shaft 322. This allows for the adjustment of the spacing between adjacent sheets while simultaneously adjusting the orientation of the sheets.

[0055] More specifically, the stepping conveyor assembly 31 also includes a guide component 34 disposed above the conveyor belt 311 and behind the rotary pitch conversion assembly 32. The guide component 34 includes two parallel grippers 341 and an inclined block 342 disposed behind the grippers 341. The two grippers 341 are used to make the long side of the sheet material parallel to the length direction of the conveyor belt. The inclined block 342 is used to perform secondary guidance on the sheet material and stop it. By setting the grippers 341 to guide the sheet material passing through the rotary pitch conversion assembly 32, it is prevented that the rotary pitch conversion assembly 32 will not adjust the sheet material properly. The inclined block 342 performs secondary correction on the sheet material through the inclined edge of the sheet material and stops the sheet material at this point. The sheet material is then transported to the rolling device 40 by the sheet material handling assembly 33. The robotic arm of the sheet material handling assembly 33 can be driven by a rodless cylinder for translation and guided by two guide rail sliders. Adjustable buffers are provided at both ends of the stroke to adjust the stop position and provide a buffering stop function. The three-axis cylinder performs vertical translation and guidance. A vacuum suction cup is provided at the end of the robotic arm to grab the sheet material and has a buffering function, which can better accommodate the height difference of the equipment.

[0056] Additionally, the rolling device 40 includes a rolling machine 41 and a feeding assembly 42 disposed on the rolling machine 41. The feeding assembly 42 includes a sheet placement plate 421, side guards 422 disposed on both sides of the sheet placement plate 421, a push rod 423 disposed at one end of the sheet placement plate 421, and a first drive component 424 connected to the push rod 423. The rolling machine 41 includes a rubber wheel 411 and a mandrel 412 disposed above the rubber wheel 411 and movable up and down. The sheet placement plate 421 is disposed between the rubber wheel 411 and the mandrel 412 and its bottom is adapted to the rubber wheel 411. The sheet material handling assembly 33 handles the sheet material onto the sheet material placement plate 421, where it is limited by the retaining edge 422. Then, the first driving component 424 drives the push rod 423 to push the sheet material between the mandrel 412 and the rubber wheel 411. The sheet material is then rolled into a roll and wound around the mandrel 412. The mandrel 412 moves upward, and the roll material handling assembly 51 transfers the roll material from the mandrel 412 to the rotating assembly 52.

[0057] Specifically, the linkage conveying system 50 includes a roll material conveying assembly 51 and a rotating assembly 52. ​​The roll material conveying assembly 51 is used to transfer the roll material from the mandrel 412 to the rotating assembly 52, and the rotating assembly 52 is used to change the orientation of the roll material from horizontal to vertical. Since the axis of the cylindrical roll material after being rolled by the rolling device 40 is horizontal, and the axis of the roll material needs to be vertical during flanging and shaping, the orientation of the roll material needs to be adjusted by the rotating assembly 52. ​​The rotating assembly 52 can be a rotating mandrel and a rotating cylinder that drives the rotating mandrel to rotate.

[0058] Furthermore, the linkage handling system 50 also includes a linkage transfer component 53, which includes a first robotic arm component 531, a second robotic arm component 532, and a third robotic arm component 533 arranged in parallel, and a linkage component 534 connecting the first robotic arm component 531, the second robotic arm component 532, and the third robotic arm component 533 respectively. The first robotic arm component 531 is used to transfer the roll material from the rotating component 52 to the flanging component 61, the second robotic arm component 532 is used to transfer the flanged roll material from the flanging component 61 to the shaping component 62, and the third robotic arm component 533 is used to transfer the shaped roll material from the shaping component 62 to the dropping chute 63. The linkage component 534 is used to drive the first robotic arm component 531, the second robotic arm component 532, and the third robotic arm component 533 to move vertically or horizontally simultaneously. The linkage component 534 drives the first robotic arm component 531, the second robotic arm component 532, and the third robotic arm component 533 to work together, causing the coil material to continuously transfer from the rotating assembly to the flanging assembly 61, the shaping assembly 62, and the dropping chute 63, completing the flanging and shaping of the coil material, and outputting it from the production line. In addition, the flanging assembly 61 and the shaping assembly 62 can be pneumatic presses, which perform flanging and shaping on the coil material. Furthermore, a stamping plate is fitted on the stamping shaft of the press, and an anti-rotation rod is provided on one side of the stamping plate, which is adapted to the anti-rotation hole on the press, so that the stamping shaft will not shake during the stamping process, ensuring the accuracy of flanging and shaping.

[0059] Furthermore, the first robotic arm component 531 includes two symmetrically arranged first pneumatic grippers 5311, with circular notches when the two first pneumatic grippers 5311 are engaged. The second robotic arm component 532 includes two symmetrically arranged second pneumatic grippers 5321 and a fixing block 5322 disposed between the two second pneumatic grippers. The notches when the two second pneumatic grippers 5321 are engaged are irregularly shaped, with triangular ends forming a full circle. The thickness of the second pneumatic grippers 5321 is less than that of the first pneumatic grippers 5311. Since the first robotic arm 531 is used to grip the coiled material on the rotating assembly 52, and the second robotic arm 532 is used to grip the coiled material after it has been flanged, and the length and shape of the coiled material will change after flanged, the notches when the two second pneumatic grippers are engaged are irregularly shaped and require auxiliary fixation by the fixing block. The pneumatic grippers and fixing block of the third robotic arm are also adapted accordingly. In addition, it should be noted that all the above-mentioned components and devices can be operated through a control console and assisted by sensing devices to ensure accurate operation of the production line.

[0060] In summary, the production line for the steel hinge bushing in the above embodiments of the present invention uses a feeding device 11 to fix the sheet metal in a preset position and a sheet metal handling device 13 to transport the sheet metal to a servo feeding device 12. Then, under the action of the servo feeding device 12, the sheet metal continuously passes through the inlet detection component 23 and enters the unloading mold 22 for unloading. Since the servo feeding device 12 cannot completely input the sheet metal into the unloading mold 22, an outlet traction component 24 is also provided. The upper roller component 241 and the lower roller component 242 clamp the front end of the partially unloaded sheet metal, and the main power roller of the lower roller component 242 rotates to drive the sheet metal to continue moving forward. In addition, the unloaded sheet metal is moved to the rolling device 40 for rolling processing under the action of the sheet metal transfer system 30. Then, the linked conveying system 50 sequentially transfers the rolled material to the flanging component 61, the shaping component 62 and the dropping groove 63 for flanging and shaping processing, and the processed parts are transferred out of the production line. By combining the work of multiple devices on the production line, the processing of bushings for steel hinges can be completed fully automatically from sheet metal to finished product in one go. Therefore, this invention solves the problems of high labor costs and low production efficiency in the preparation of steel hinge bushings in existing technologies.

[0061] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A production line for profiled steel hinge bushings, characterized in that, It includes a sheet material feeding system, a feeding device, a sheet material transfer system, a rolling device, a linkage conveying system, and an edge-flanging and shaping device; The sheet metal feeding system includes a feeding device for placing and fixing sheet metal, a servo feeding device for conveying sheet metal to the unloading device, and a sheet metal handling device for transferring sheet metal from the feeding device to the servo feeding device. The feeding device includes a press body, a feeding mold mounted on the press body, a feeding port detection component mounted at the feeding port of the feeding mold, and a feeding traction component mounted at the discharging port of the feeding mold. The feeding traction component includes an upper roller assembly and a lower roller assembly mounted on the same straight line. The upper roller assembly is capable of moving up and down, and the lower roller assembly has a main power roller. The sheet material transfer system is used to transfer the sheet material to the rolling device for rolling, and the linkage conveying system is used to transfer the rolled material sequentially to the flanging component, the shaping component and the dropping chute of the flanging and shaping device. The sheet material transfer system includes a stepping conveyor assembly, a rotary pitch conversion assembly, and a sheet material handling assembly; The blanking die includes a punch that is connected to the press body and can move up and down, and a die disposed below the punch. The stepping conveyor assembly includes a conveyor belt, one end of which is placed below the die. The rotary pitch-adjusting assembly is used to adjust the orientation and spacing of the sheet material on the conveyor belt, and the sheet material handling assembly is used to handle the adjusted sheet material to the rolling device. The rotary pitch-changing assembly includes four parallel rotary shafts, a vacuum suction cup component at the bottom of the rotary shaft, a connector connected to the side of the rotary shaft, a pitch-changing plate on one side of the rotary shaft, and a second drive component connected to the pitch-changing plate. The pitch-changing plate is provided with symmetrically inclined pitch-changing grooves. The connector includes a connecting rod disposed in the pitch-changing groove. The second drive component is used to drive the pitch-changing plate to move, so that the connecting rod moves along the pitch-changing groove, thereby causing the four rotary shafts to move closer to or further away from each other. The rotating shaft is also provided with a gear, and the side of the rotating shaft is provided with a rack adapted to the gear, so that the second driving component drives the four rotating shafts to move closer or further away, while driving the four rotating shafts to rotate.

2. The line for the production of a profiled steel hinge bushing according to claim 1, characterized in that, The servo feed device includes a feed panel arranged in parallel for placing the sheet metal, a transition positioning component that can move up and down below the feed panel, a pressure plate component arranged on both sides of the feed panel, and a gripping feed component arranged between the two feed panels. The transition positioning component is used to assist the sheet material handling device in fixing the sheet material on the feed panel, the pressure plate component is used to flatten the sheet material on the feed panel, and the gripping feed component is used to push the flattened sheet material to the unloading mold for unloading.

3. The production line for the steel hinge bushing according to claim 1, characterized in that, The rolling device includes a rolling machine and a feeding assembly mounted on the rolling machine. The feeding assembly includes a sheet placement plate, side guards on both sides of the sheet placement plate, a push rod at one end of the sheet placement plate, and a first driving component connected to the push rod. The rolling machine includes a rubber wheel and a mandrel that can move up and down above the rubber wheel. The sheet placement plate is located between the rubber wheel and the mandrel, and its bottom is adapted to the rubber wheel.

4. The production line for the steel hinge bushing according to claim 3, characterized in that, The linkage handling system includes a coil handling component and a rotating component; The roll material handling assembly is used to transfer the roll material from the mandrel to the rotating assembly, and the rotating assembly is used to change the orientation of the roll material from horizontal to vertical.

5. The production line for the steel hinge bushing according to claim 4, characterized in that, The linkage handling system further includes a linkage transfer component, which includes a first robotic arm component, a second robotic arm component, and a third robotic arm component arranged in parallel, and linkage components respectively connecting the first robotic arm component, the second robotic arm component, and the third robotic arm component. The first robotic arm component is used to transfer the roll material from the rotating component to the flanging component, the second robotic arm component is used to transfer the flanged roll material from the flanging component to the shaping component, and the third robotic arm component is used to transfer the shaped roll material from the shaping component to the dropping chute. The linkage components are used to drive the first robotic arm component, the second robotic arm component, and the third robotic arm component to move vertically or horizontally simultaneously.

6. The production line for the steel hinge bushing according to claim 5, characterized in that, The first robotic arm component includes two symmetrically arranged first pneumatic grippers, the notches of which are circular when the two first pneumatic grippers are engaged. The second robotic arm component includes two symmetrically arranged second pneumatic grippers and a fixing block disposed between the two second pneumatic grippers, the notches of which are circular with triangular ends when the two second pneumatic grippers are engaged. The thickness of the second pneumatic grippers is less than that of the first pneumatic grippers.

7. The production line for the steel hinge bushing according to claim 1, characterized in that, The stepping conveyor assembly also includes a guide component disposed above the conveyor belt and behind the rotary pitch component. The guide component includes two parallel grippers and an inclined block disposed behind the grippers. The two grippers are used to make the long side of the sheet parallel to the length direction of the conveyor belt. The inclined block is used to perform secondary guidance on the sheet and to stop the sheet.

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