A positioning tool for wheel hub machining protection and a spraying method

Abstract

The application discloses a kind of wheel hub processing protection positioning tool and spraying method, it is related to wheel hub processing field, and the present application includes positioning mechanism, the side of positioning mechanism is equipped with the tool for the hole protection and the feeding mechanism of feeding, the two sides of feeding mechanism and positioning mechanism are equipped with the transport mechanism for the tool used for protection is transported, the transport mechanism between two is equipped with the grabbing mechanism for the tool used for protection is grabbed, the upper surface of positioning mechanism is equipped with the hole locating mechanism for the hole locating of wheel hub, in the present application, the hole locating mechanism and positioning mechanism are set to the hole locating mechanism and positioning mechanism, the position of wheel hub and wheel hub hole is adjusted, to avoid the situation that protection plug cannot be inserted.

Description

Technical Field

[0001] This invention relates to the field of wheel hub processing, specifically to a positioning fixture and spraying method for wheel hub processing protection. Background Technology

[0002] A wheel rim, also called a wheel hub, rim, wheel, or wheel hub, is a cylindrical metal component mounted on an axle that supports the tire from the inside of the tire. It is used to bear the weight of the vehicle and distribute the pressure to the tire, ensuring the vehicle's stability.

[0003] When surface-treating wheel hubs, there are generally two methods: baking paint and electroplating. In the baking paint process, the wheel hub needs to be sprayed with a special coating using a spray gun. This coating is then baked and cured, making it more durable, wear-resistant, and providing protection and aesthetics. Before spraying, the center hole and threaded holes need to be protected to prevent paint residue from remaining inside the holes and affecting their precision. However, most current spraying equipment requires manual insertion of protective caps into the holes, increasing labor costs and reducing production efficiency. To address these issues, the inventor proposes a positioning fixture and spraying method for wheel hub processing protection. Summary of the Invention

[0004] To address the issue of needing to manually protect the holes in wheel hubs, the present invention aims to provide a positioning fixture and spraying method for wheel hub processing protection.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a positioning fixture for wheel hub processing protection, including a positioning mechanism, a feeding mechanism for feeding tools for protecting holes on one side of the positioning mechanism, a transport mechanism for transporting tools used for protection on both sides of the feeding mechanism and the positioning mechanism, a gripping mechanism for gripping tools used for protection between the two transport mechanisms, and a hole alignment mechanism for aligning holes in the wheel hub on the upper surface of the positioning mechanism.

[0006] Preferably, the positioning mechanism includes a positioning platform, four movable plates slidably mounted on the lower surface of the positioning platform, and movable strips slidably mounted on the upper surfaces of the four movable plates, with the top ends of the movable strips slidably penetrating the positioning platform. Limiting balls are hingedly mounted on the sides of two opposing movable strips that are far apart from each other, and the limiting balls are in movable contact with the inner wall of the hub. A slider is fixedly mounted on the lower surface of the movable strip, and the slider is slidably disposed inside the movable plate. A first spring is fixedly mounted on the side of the slider away from the center point of the positioning platform, and the end of the first spring away from the slider is fixedly connected to the inside of the movable plate. A mounting bracket is fixedly mounted on the lower surface of the positioning platform, and a sleeve is rotatably mounted inside the mounting bracket.

[0007] Preferably, the feeding mechanism includes a feeding platform located on one side of the positioning platform. Four storage boxes are fixedly installed on the upper surface of the feeding platform, and the four storage boxes are arranged in a rectangular pattern. A storage frame is fixedly installed on the upper surface of the feeding platform, and the storage frame is located between two storage boxes on the side away from the positioning platform. Protective plugs are movably contacted inside the storage frame and storage boxes. A fixing post is fixedly installed on the upper surface of the protective plug. A trapezoidal ring is movably fitted on the outer surface of the fixing post. A first electric cylinder and four second electric cylinders are fixedly installed on the upper surface of the feeding platform. The first electric cylinder and the second electric cylinder correspond to the storage frame and the storage box, respectively. A push plate is fixedly installed at the end of the output shaft of the first electric cylinder and the second electric cylinder near the center point of the feeding platform. The end of the push plate near the center point of the feeding platform is movably contacted with the outer surface of the fixing post.

[0008] Preferably, the transport mechanism includes mounting plates, with two mounting plates located on opposite sides of the loading platform and the positioning platform, respectively. Two movable seats are slidably mounted on the sides of the two mounting plates that are close to each other, and vertical plates are slidably mounted in the two movable seats on the same side. Guide columns are fixedly mounted on the sides of the two vertical plates that are far from each other, and the end of the guide column away from the vertical plate slides through the mounting plate. Fixing frames are fixedly mounted on the sides of the two mounting plates that are far from each other. A rotating plate is rotatably mounted on the side of the fixing frame that is close to the mounting plate, and the end of the guide column that is close to the fixing frame slides through the rotating plate. A No. 1 motor is fixedly mounted on the side of the fixing frame that is far from the mounting plate, and the end of the No. 1 motor output shaft that is close to the mounting plate is fixedly connected to the rotating plate.

[0009] Preferably, the gripping mechanism includes a mounting plate located between two mounting plates. Two horizontal bars are fixedly mounted on the outer surface of the mounting plate, and the ends of the horizontal bars away from the mounting plate are fixedly connected to a vertical plate. A square plate is rotatably mounted inside the mounting plate. A second motor is fixedly mounted on the upper surface of the mounting plate, and the bottom end of the output shaft of the second motor is fixedly connected to the square plate. Four connecting rods are rotatably mounted inside the square plate, and the connecting rods are rectangularly distributed. A connecting strip is fixedly mounted on the bottom end of the connecting rod. An installation rod is rotatably mounted on the lower surface of the connecting strip away from the connecting rod, and the bottom end of the installation rod slides through the mounting plate. An installation column is fixedly mounted on the bottom end of the installation rod. A connecting column is fixedly mounted on the lower surface of the mounting plate, and the top end of the connecting column is located at the center of the lower surface of the mounting plate.

[0010] Preferably, a movable tube is slidably fitted onto the outer surface of the bottom end of the connecting column and the four mounting columns, and the bottom end of the movable tube is in movable contact with the upper surface of the protective plug. Two limiting strips are fixedly installed on the outer surface of the top end of the inner ring of the movable tube, and five sets of limiting strips are slidably disposed inside the connecting column and the four mounting columns. A second spring is fixedly installed on the upper surface of the limiting strip, and the top ends of the five sets of second springs are fixedly connected to the inside of the connecting column and the four mounting columns. A fixed tube is fixedly installed at the bottom end of the connecting column and the four mounting columns. Two limiting blocks are slidably installed inside the fixed tube, and the upper surface of the limiting blocks is in movable contact with the lower surface of the top end of the fixed column. A third spring is fixedly installed on the sides of the two limiting blocks that are far apart from each other, and the end of the third spring that is far away from the limiting block is fixedly connected to the inside of the fixed tube.

[0011] Preferably, the hole-setting mechanism includes a support frame, the upper surface of which is fixedly connected to a positioning platform. A horizontal plate is slidably installed inside the support frame, and slide bars are fixedly installed on both sides of the horizontal plate. The slide bars are slidably disposed inside the support frame. A screw is rotatably installed on both sides of the support frame, and a slide bar is threaded onto the screw. A first bevel gear is fixedly installed at the bottom end of the screw. Mounting blocks are fixedly installed on both sides of the support frame, and rotating rods are rotatably installed inside the two mounting blocks. Two second bevel gears are fixedly installed on the outer surface of the rotating rod, and the first and second bevel gears mesh with each other. A rotating rod is rotatably installed inside the horizontal plate, and the top end of the rotating rod rotatably passes through the mounting frame and the sleeve. A fourth spring is fixedly installed on the upper surface of the horizontal plate, and the top end of the fourth spring is fixedly connected to the rotating rod. A connecting frame is rotatably installed on the outer surface of the rotating rod. Four swing bars are rotatably installed inside the connecting frame, and the four swing bars are rectangularly distributed. The end of the swing bar away from the connecting frame is rotatably connected to a moving plate.

[0012] Preferably, a vertical column is detachably installed at the top of the rotating rod, and the top of the vertical column rotates through the positioning platform. A fixed plate is fixedly installed at the top of the vertical column. A limit post is fixedly installed on the upper surface of the fixed plate, and the limit post is located at the center point of the fixed plate. Four movable columns are slidably installed inside the fixed plate, and the four movable columns are arranged in a rectangular pattern. The tops of the movable columns and the limit posts are movably inserted into the holes of the wheel hub. A limit rod is fixedly installed at the bottom of the movable columns, and the bottom of the limit rod slides through the fixed plate. Four fifth springs are fixedly installed on the lower surface of the fixed plate, and the bottom of the fifth springs is fixedly connected to the handle of the limit rod.

[0013] Preferably, a second toothed plate is fixedly installed on the side of the vertical plate on the right side. A transmission rod is rotatably installed inside the mounting plate on the right side near the loading platform. The transmission rod and the rotating rod are driven by a synchronous pulley and a synchronous belt. A first gear is fixedly installed on the outer surface of the transmission rod, and the first gear and the second toothed plate are movably meshed. A first toothed plate is fixedly installed on the side of the movable seat on the lower right side away from the mounting plate. Two fixing blocks are fixedly installed on the side of the mounting plate on the right side near the positioning platform. A vertical rod is rotatably installed inside the two fixing blocks. The vertical rod and the sleeve are driven by a synchronous pulley and a synchronous belt. A second gear is fixedly installed on the outer surface of the vertical rod, and the second gear and the first toothed plate are movably meshed.

[0014] A spraying method for a positioning fixture used for wheel hub machining protection includes the following steps:

[0015] Step 1: Move the limit ball by rotating the rod. The limit ball positions the wheel hub so that the wheel hub is in the center of the positioning platform. Adjust the position of the wheel hub hole by rotating the rod.

[0016] Step 2: Move the protective plug by rotating the plate, so that the protective plug is inserted into the hole in the wheel hub to protect the hole in the wheel hub;

[0017] Step 3: Apply spray paint to the outer surface and inner rim of the wheel hub;

[0018] Step 4: Bake the painted wheel hubs.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. In this invention, a gripping mechanism and a transport mechanism are set up to grip and transport the protective plug, thereby achieving automatic protection of the hole in the wheel hub. This avoids the need for manual insertion of the protective plug, reduces the workload of workers, and improves work efficiency. Furthermore, by setting up a hole-aligning mechanism and a positioning mechanism, the position of the wheel hub and the hole in the wheel hub is adjusted to facilitate the insertion of the protective plug and avoid situations where the protective plug cannot be inserted.

[0021] 2. In this invention, the movement of the limiting ball is driven by the cooperation between the transmission rod, the rotating rod and the rotating rod, so that the limiting ball contacts the inner wall of the wheel hub to position the wheel hub and place it at the center of the positioning platform. The position of the contour hole is adjusted by the cooperation between the vertical rod, the sleeve and the rotating rod so that the position of the wheel hub hole corresponds to the position of the protective plug, thus avoiding the situation where the protective plug cannot be inserted.

[0022] 3. In this invention, the position of the mounting column is adjusted by the cooperation between the connecting rod and the mounting rod, so that the mounting column can be adjusted according to the hub of different sizes, thereby improving the practicality of the device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention.

[0026] Figure 3 This is a cross-sectional schematic diagram of the positioning mechanism and the hole-aligning mechanism of the present invention.

[0027] Figure 4 This is a cross-sectional structural diagram of the feeding mechanism and gripping mechanism of the present invention.

[0028] Figure 5 This is a schematic cross-sectional view of the transportation mechanism of the present invention.

[0029] Figure 6 For the present invention Figure 3 An enlarged schematic diagram of the structure at point A.

[0030] Figure 7 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B.

[0031] Figure 8 For the present invention Figure 5 A magnified schematic diagram of the structure at point C.

[0032] Figure 9 For the present invention Figure 5 A magnified schematic diagram of the structure at point D.

[0033] In the diagram: 1. Positioning mechanism; 101. Positioning table; 102. Moving bar; 103. Limit ball; 104. Moving plate; 105. Mounting bracket; 106. Sleeve; 107. Slider; 108. First spring; 2. Feeding mechanism; 201. Feeding table; 202. Storage box; 203. Protective plug; 204. Push plate; 205. Electric cylinder No. 1; 206. Storage box; 207. Electric cylinder No. 2; 20 8. Fixed column; 209. Trapezoidal ring; 3. Transport mechanism; 301. Mounting plate; 302. Fixed frame; 303. Motor No. 1; 304. Rotating plate; 305. Moving seat; 306. Vertical plate; 307. Guide column; 308. Gear No. 1; 309. Transmission rod; 310. Gear No. 1; 311. Gear No. 2; 312. Fixed block; 313. Vertical rod; 314. Gear No. 2; 4. Grab 401. Mounting mechanism; 402. No. 2 motor; 403. Square plate; 404. Connecting rod; 405. Connecting strip; 406. Mounting rod; 407. Mounting column; 408. Connecting column; 409. Horizontal bar; 410. Moving tube; 411. Limiting strip; 412. Second spring; 413. Fixing tube; 414. Limiting block; 415. Third spring; 5. Hole alignment mechanism; 501. Support Frame; 502, Horizontal plate; 503, Sliding bar; 504, Screw; 505, First bevel gear; 506, Rotating rod; 507, Second bevel gear; 508, Mounting block; 509, Rotating rod; 510, Connecting frame; 511, Swing bar; 512, Fourth spring; 513, Vertical column; 514, Fixed plate; 515, Limiting column; 516, Moving column; 517, Limiting rod; 518, Fifth spring. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example: Figure 1-9As shown, the present invention provides a positioning fixture for wheel hub processing protection, including a positioning mechanism 1. A feeding mechanism 2 is provided on one side of the positioning mechanism 1 for feeding the tool used to protect the hole, which is used to feed the protective plug 203. Both sides of the feeding mechanism 2 and the positioning mechanism 1 are provided with a transport mechanism 3 for transporting the tool used for protection, which is used to transport the protective plug 203. Between the two transport mechanisms 3 is a gripping mechanism 4 for gripping the tool used for protection, which is used to grip the protective plug 203. The upper surface of the positioning mechanism 1 is provided with a hole alignment mechanism 5 for aligning the wheel hub hole, which is used to adjust the position of the wheel hub hole so that the wheel hub hole corresponds to the protective plug 203.

[0036] The positioning mechanism 1 includes a positioning platform 101. Four movable plates 104 are slidably mounted on the lower surface of the positioning platform 101. Movable strips 102 are slidably mounted on the upper surface of the four movable plates 104, and the top of the movable strips 102 slides through the positioning platform 101. Limiting balls 103 are hingedly mounted on the sides of two opposing movable strips 102 that are far apart from each other, and the limiting balls 103 are in active contact with the inner wall of the hub. A slider 107 is fixedly mounted on the lower surface of the movable strips 102, and the slider 107 is slidably disposed inside the movable plate 104. A first spring 108 is fixedly mounted on the side of the slider 107 away from the center point of the positioning platform 101, and the end of the first spring 108 away from the slider 107 is fixedly connected to the inside of the movable plate 104. A mounting bracket 105 is fixedly mounted on the lower surface of the positioning platform 101, and a sleeve 106 is rotatably mounted inside the mounting bracket 105.

[0037] By adopting the above technical solution, the limiting ball 103 can position the wheel hub.

[0038] The feeding mechanism 2 includes a feeding platform 201, which is located on one side of the positioning platform 101. Four storage boxes 206 are fixedly installed on the upper surface of the feeding platform 201, and the four storage boxes 206 are arranged in a rectangular pattern. A storage frame 202 is fixedly installed on the upper surface of the feeding platform 201, and the storage frame 202 is located between two storage boxes 206 on the side away from the positioning platform 101. Protective plugs 203 are movably contacted inside both the storage frame 202 and the storage boxes 206. A fixing post 20 is fixedly installed on the upper surface of the protective plug 203. 8. A trapezoidal ring 209 is movably fitted on the outer surface of the fixed column 208. A first electric cylinder 205 and four second electric cylinders 207 are fixedly installed on the upper surface of the loading platform 201. The first electric cylinder 205 and the second electric cylinder 207 correspond to the storage frame 202 and the storage box 206, respectively. A push plate 204 is fixedly installed at the end of the output shaft of the first electric cylinder 205 and the second electric cylinder 207 near the center point of the loading platform 201. The end of the push plate 204 near the center point of the loading platform 201 is in movable contact with the outer surface of the fixed column 208.

[0039] By adopting the above technical solution, the push plate 204 can drive the protective plug 203 to move.

[0040] The transport mechanism 3 includes a mounting plate 301, with two mounting plates 301 located on either side of the loading platform 201 and the positioning platform 101, respectively. Two movable seats 305 are slidably mounted on the sides of the two mounting plates 301 that are close to each other. Vertical plates 306 are slidably mounted in the two movable seats 305 on the same side. Guide columns 307 are fixedly mounted on the sides of the two vertical plates 306 that are far from each other. The end of the guide column 307 that is far from the vertical plate 306 slides through the mounting plate 301. Fixing frames 302 are fixedly mounted on the sides of the two mounting plates 301 that are far from each other. A rotating plate 304 is rotatably mounted on the side of the fixing frame 302 that is close to the mounting plate 301. The end of the guide column 307 that is close to the fixing frame 302 slides through the rotating plate 304. A first motor 303 is fixedly mounted on the side of the fixing frame 302 that is far from the mounting plate 301. The end of the output shaft of the first motor 303 that is close to the mounting plate 301 is fixedly connected to the rotating plate 304.

[0041] By adopting the above technical solution, the No. 1 motor 303 can drive the vertical plate 306 to move.

[0042] The gripping mechanism 4 includes a mounting plate 401, which is located between two mounting plates 301. Two horizontal bars 409 are fixedly mounted on the outer surface of the mounting plate 401, and the ends of the horizontal bars 409 away from the mounting plate 401 are fixedly connected to a vertical plate 306. A square plate 403 is rotatably mounted inside the mounting plate 401. A second motor 402 is fixedly mounted on the upper surface of the mounting plate 401, and the bottom end of the output shaft of the second motor 402 is fixedly connected to the square plate 403. A second motor 402 is rotatably mounted inside the square plate 403. There are four connecting rods 404, which are arranged in a rectangular shape. A connecting strip 405 is fixedly installed at the bottom end of the connecting rod 404. An installation rod 406 is rotatably installed at the end of the lower surface of the connecting strip 405 away from the connecting rod 404. The bottom end of the installation rod 406 slides through the mounting plate 401. An installation post 407 is fixedly installed at the bottom end of the installation rod 406. A connecting post 408 is fixedly installed on the lower surface of the mounting plate 401, and the top end of the connecting post 408 is located at the center of the lower surface of the mounting plate 401.

[0043] By adopting the above technical solution, the No. 2 motor 402 can drive the mounting column 407 to move.

[0044] A movable tube 410 is slidably fitted onto the outer surface of the bottom end of the connecting post 408 and the four mounting posts 407, and the bottom end of the movable tube 410 is in movable contact with the upper surface of the protective plug 203. Two limiting strips 411 are fixedly installed on the outer surface of the top end of the inner ring of the movable tube 410, and the five sets of limiting strips 411 are slidably disposed inside the connecting post 408 and the four mounting posts 407 respectively. A second spring 412 is fixedly installed on the upper surface of the limiting strips 411, and the top ends of the five sets of second springs 412 are respectively fixedly connected to... Inside the connecting post 408 and the four mounting posts 407, a fixing tube 413 is fixedly installed at the bottom end of each of the connecting post 408 and the four mounting posts 407. Two limiting blocks 414 are slidably installed inside the fixing tube 413, and the upper surface of the limiting block 414 is in contact with the lower surface of the top end of the fixing post 208. A third spring 415 is fixedly installed on the side of the two limiting blocks 414 that are far away from each other, and the end of the third spring 415 that is far away from the limiting block 414 is fixedly connected to the inside of the fixing tube 413.

[0045] By adopting the above technical solution, the fixed tube 413 is able to grasp the protective plug 203.

[0046] The hole-setting mechanism 5 includes a support frame 501, the upper surface of which is fixedly connected to the positioning table 101. A horizontal plate 502 is slidably installed inside the support frame 501. Slide rails 503 are fixedly installed on both sides of the horizontal plate 502 and are slidably disposed inside the support frame 501. Screws 504 are rotatably installed on both sides of the support frame 501, and slide rails 503 are threaded onto the screws 504. A first bevel gear 505 is fixedly installed at the bottom end of the screws 504. Mounting blocks 508 are fixedly installed on both sides of the support frame 501. Rotating rods 506 are rotatably installed inside the two mounting blocks 508, and the outer surface of the rotating rods 506 is fixedly mounted with... There are two second bevel gears 507, and the first bevel gear 505 and the second bevel gear 507 mesh with each other. A rotating rod 509 is rotatably installed inside the horizontal plate 502, and the top end of the rotating rod 509 rotatably passes through the mounting bracket 105 and the sleeve 106. A fourth spring 512 is fixedly installed on the upper surface of the horizontal plate 502, and the top end of the fourth spring 512 is fixedly connected to the rotating rod 509. A connecting bracket 510 is rotatably installed on the outer surface of the rotating rod 509. Four swing bars 511 are rotatably installed inside the connecting bracket 510, and the four swing bars 511 are arranged in a rectangular shape. The end of the swing bar 511 away from the connecting bracket 510 is rotatably connected to the moving plate 104.

[0047] By adopting the above technical solution, the rotating rod 506 can drive the moving plate 104 to move.

[0048] A vertical column 513 is detachably installed at the top of the rotating rod 509, and the top of the vertical column 513 rotates through the positioning platform 101. A fixed plate 514 is fixedly installed at the top of the vertical column 513. A limit post 515 is fixedly installed on the upper surface of the fixed plate 514, and the limit post 515 is located at the center point of the fixed plate 514. Four movable columns 516 are slidably installed inside the fixed plate 514, and the four movable columns 516 are arranged in a rectangular shape. The tops of the movable columns 516 and the limit posts 515 are movably inserted into the holes of the wheel hub. A limit rod 517 is fixedly installed at the bottom of the movable column 516, and the bottom of the limit rod 517 slides through the fixed plate 514. Four fifth springs 518 are fixedly installed on the lower surface of the fixed plate 514, and the bottom of the fifth springs 518 are fixedly connected to the handle of the limit rod 517.

[0049] By adopting the above technical solution, the rotating rod 509 can adjust the position of the hub hole.

[0050] A second toothed plate 311 is fixedly installed on the side of the vertical plate 306 on the right. A transmission rod 309 is rotatably installed inside the mounting plate 301 on the right side near the loading platform 201. The transmission rod 309 and the rotating rod 506 are driven by a synchronous pulley and a synchronous belt. A first gear 310 is fixedly installed on the outer surface of the transmission rod 309. The first gear 310 and the second toothed plate 311 are in active meshing. A first toothed plate 308 is fixedly installed on the side of the movable seat 305 on the lower right side away from the mounting plate 301. Two fixing blocks 312 are fixedly installed on the side of the mounting plate 301 on the right side near the positioning platform 101. A vertical rod 313 is rotatably installed inside the two fixing blocks 312. The vertical rod 313 and the sleeve 106 are driven by a synchronous pulley and a synchronous belt. A second gear 314 is fixedly installed on the outer surface of the vertical rod 313. The second gear 314 and the first toothed plate 308 are in active meshing.

[0051] By adopting the above technical solution, the transmission rod 309 can drive the rotating rod 506 to rotate, and the vertical rod 313 can drive the sleeve 106 to rotate.

[0052] A spraying method for a positioning fixture used for wheel hub machining protection includes the following steps:

[0053] Step 1: Move the limit ball 103 by rotating the rod. The limit ball 103 positions the wheel hub so that the wheel hub is located at the center of the positioning platform 101. Adjust the position of the wheel hub hole by rotating the rod 509.

[0054] Step 2: The protective plug is moved by rotating plate 304, so that the protective plug 203 is inserted into the hole of the wheel hub to protect the hole of the wheel hub;

[0055] Step 3: Apply spray paint to the outer surface and inner rim of the wheel hub;

[0056] Step 4: Bake the painted wheel hubs.

[0057] Working principle: First, the first motor 303 is turned on, driving the rotating plate 304 to rotate. The rotation of the rotating plate 304 drives the guide column 307 to move, causing the guide column 307 to move along the N-shaped groove inside the mounting plate 301. The movement of the guide column 307 drives the vertical plate 306 to move, which in turn drives the horizontal bar 409 to move. The movement of the horizontal bar 409 drives the mounting plate 401 to move, which in turn drives the connecting column 408 to move. The movement of the mounting plate 401 also drives the mounting rod 406 to move, which in turn drives the mounting column 407 to move. At this time, the mounting column 407... The movement of the connecting post 408 drives the fixed tube 413 to move, which in turn drives the limiting block 414 to move. The movement of the limiting block 414 then drives the protective plug 203 to move, allowing the protective plug 203 to be inserted into the hole of the wheel hub. When the protective plug 203 is inserted into the hole of the wheel hub, the lower surface of the moving tube 410 and the upper surface of the protective plug 203 come into contact. The continued movement of the mounting post 407 and the connecting post 408 drives the limiting block 414 to move, causing the limiting block 414 to continue to move downwards. The end of the limiting block 414 that is close to each other comes into contact with the outer surface of the trapezoidal ring 209, thus clamping the trapezoidal ring 209.

[0058] Secondly, during the movement, the vertical movement of the vertical plate 306 drives the movement of the second gear plate 311. When the second gear plate 311 meshes with the first gear 310, it drives the first gear 310 to rotate. The rotation of the first gear 310 drives the transmission rod 309 to rotate, which in turn drives the rotating rod 506 to rotate. The rotation of the rotating rod 506 drives the second bevel gear 507 to rotate, which in turn drives the first bevel gear 505 to rotate. The rotation of the first bevel gear 505 drives the screw 504 to rotate, which in turn drives the slide bar 503 to move. The movement of the slide bar 503 drives the horizontal plate 502 to move, which in turn drives the rotating rod 509 to move. The movement of the rotating rod 509 then drives the connecting rod... The connecting frame 510 moves, which drives the swing bar 511 to swing. The swing bar 511 pushes the moving plate 104 to move. The moving plate 104 drives the moving bar 102 to move. The moving bar 102 drives the limiting ball 103 to move, so that the outer surface of the limiting ball 103 contacts the inner wall of the wheel hub, thereby positioning the wheel hub. The rotating rod 509 moves the vertical column 513 to move. The vertical column 513 moves the fixed plate 514 to move. The fixed plate 514 moves the limiting column 515 and the moving column 516 to move, so that the limiting column 515 is inserted into the hole in the center of the wheel hub. If the moving column 516 does not correspond to the hole in the wheel hub, the moving column 516 moves downward into the fixed plate 514.

[0059] Then, the horizontal movement of the vertical plate 306 drives the movement of the movable seat 305, which in turn drives the movement of the first gear plate 308. When the first gear plate 308 meshes with the second gear 314, it drives the second gear 314 to rotate. The rotation of the second gear 314 drives the vertical rod 313 to rotate, which in turn drives the sleeve 106 to rotate. The rotation of the sleeve 106 drives the rotating rod 509 to rotate, which in turn drives the fixed disk 514 to rotate. The rotation of the fixed disk 514 then drives the movable... When the column 516 moves, the fourth spring 512 deforms. When the column 516 aligns with the hole in the wheel hub, the fifth spring 518 releases the deformation force, pushing the column 516 upward so that it inserts into the hole in the wheel hub. At this time, the fourth spring 512 releases the deformation force, causing the rotating rod 509 to rotate. The rotation of the rotating rod 509 causes the fixed plate 514 to rotate, returning the fixed plate 514 to its original position. This adjusts the position of the wheel hub hole so that the hole in the wheel hub aligns with the protective plug 203.

[0060] The reverse rotation of the last motor 303 drives the rotating plate 304 to reset, which in turn drives the mounting plate 401 to reset. During the reset process, the movement of the vertical plate 306 drives the mounting plate 401 to move, which in turn drives the moving tube 410 to move. At this time, the movement of the moving tube 410 drives the limiting block 414 to move, which in turn drives the trapezoidal ring 209 to move upward, so that the upper surface of the trapezoidal ring 209 contacts the lower surface of the top of the fixed column 208. At this time, the top of the fixed column 208 blocks the trapezoidal ring 209 from moving, so the limiting block 414 moves upward, causing the limiting block 414 and the trapezoidal ring 209 to separate, thus contacting the gripper 203, facilitating the next transport.

[0061] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A positioning fixture for wheel hub processing protection, comprising a positioning mechanism (1), characterized in that: The positioning mechanism (1) includes a positioning platform (101), a mounting bracket (105) is fixedly installed on the lower surface of the positioning platform (101), and a sleeve (106) is rotatably installed inside the mounting bracket (105). The positioning mechanism (1) is provided with a feeding mechanism (2) for feeding the tool to protect the hole on one side. The feeding mechanism (2) includes a feeding table (201). The loading mechanism (2) and the positioning mechanism (1) are provided with a transport mechanism (3) for transporting the protective tools on both sides. The transport mechanism (3) includes a mounting plate (301), and the two mounting plates (301) are located on both sides of the loading platform (201) and the positioning platform (101), respectively. Two movable seats (305) are slidably installed on the sides of the two mounting plates (301) that are close to each other. Vertical plates (306) are slidably installed in the two movable seats (305) on the same side. A gripping mechanism (4) for gripping the protective tools is provided between the two transport mechanisms (3). The gripping mechanism (4) includes a mounting plate (401) and the mounting plate (401) is located between two mounting plates (301). Two horizontal bars (409) are fixedly installed on the outer surface of the mounting plate (401), and one end of the horizontal bar (409) away from the mounting plate (401) is fixedly connected to the vertical plate (306). The upper surface of the positioning mechanism (1) is provided with a hole-aligning mechanism (5) for aligning the wheel hub. The hole-aligning mechanism (5) includes a support frame (501), and the upper surface of the support frame (501) is fixedly connected to the positioning table (101). A horizontal plate (502) is slidably installed inside the support frame (501). A rotating rod (509) is rotatably installed inside the horizontal plate (502), and the top end of the rotating rod (509) rotatably passes through the mounting frame (105) and the sleeve (106). The rotating rod (509) is driven to rotate by the rotation of the sleeve (106). A fourth spring (512) is fixedly installed on the upper surface of the horizontal plate (502), and the top end of the fourth spring (512) is fixedly connected to the rotating rod (509). The top of the rotating rod (509) is detachably mounted with a vertical column (513), and the top of the vertical column (513) rotates through the positioning platform (101). The top of the vertical column (513) is fixedly mounted with a fixed plate (514). The upper surface of the fixed plate (514) is fixedly mounted with a limiting column (515), and the limiting column (515) is located at the center point of the fixed plate (514). Four movable columns (516) are slidably mounted inside the fixed plate (514), and the four movable columns (516) are arranged in a rectangular shape. The tops of the movable columns (516) and the limiting columns (515) are movably inserted into the holes of the wheel hub. The movable seat (305) located on the lower right side has a toothed plate (308) fixedly installed on the side away from the mounting plate (301). The mounting plate (301) located on the right side has two fixed blocks (312) fixedly installed on the side near the positioning table (101). A vertical rod (313) is rotatably installed inside the two fixed blocks (312), and the vertical rod (313) and the sleeve (106) are driven by a synchronous pulley and a synchronous belt. A second gear (314) is fixedly installed on the outer surface of the vertical rod (313), and the second gear (314) and the toothed plate (308) are in active meshing.

2. The positioning fixture for wheel hub machining protection as described in claim 1, characterized in that, Four movable plates (104) are slidably mounted on the lower surface of the positioning platform (101). Movable strips (102) are slidably mounted on the upper surface of the four movable plates (104), and the top of the movable strips (102) slides through the positioning platform (101). Limiting balls (103) are hinged to the sides of the two opposite movable strips (102) that are far apart from each other, and the limiting balls (103) are in active contact with the inner wall of the hub. A slider (107) is fixedly mounted on the lower surface of the movable strips (102), and the slider (107) is slidably disposed inside the movable plate (104). A first spring (108) is fixedly mounted on the side of the slider (107) away from the center point of the positioning platform (101), and the end of the first spring (108) away from the slider (107) is fixedly connected to the inside of the movable plate (104).

3. The positioning fixture for wheel hub processing protection as described in claim 2, characterized in that, The loading platform (201) is located on one side of the positioning platform (101). Four storage boxes (206) are fixedly installed on the upper surface of the loading platform (201), and the four storage boxes (206) are arranged in a rectangular shape. A storage frame (202) is fixedly installed on the upper surface of the loading platform (201), and the storage frame (202) is located between two storage boxes (206) on the side away from the positioning platform (101). Protective plugs (203) are movably contacted inside the storage frame (202) and the storage boxes (206). A fixing post (208) is fixedly installed on the upper surface of the protective plug (203). A trapezoidal ring (209) is movably fitted on the outer surface of (208). A first electric cylinder (205) and four second electric cylinders (207) are fixedly installed on the upper surface of the loading platform (201). The first electric cylinder (205) and the second electric cylinder (207) correspond to the storage frame (202) and the storage box (206) respectively. A push plate (204) is fixedly installed at the end of the output shaft of the first electric cylinder (205) and the second electric cylinder (207) near the center point of the loading platform (201). The end of the push plate (204) near the center point of the loading platform (201) is in movable contact with the outer surface of the fixed column (208).

4. The positioning fixture for wheel hub processing protection as described in claim 3, characterized in that, Guide posts (307) are fixedly installed on the sides of the two vertical plates (306) that are far apart from each other, and the end of the guide post (307) away from the vertical plate (306) slides through the mounting plate (301). Fixing brackets (302) are fixedly installed on the sides of the two mounting plates (301) that are far apart from each other. A rotating plate (304) is rotatably installed on the side of the fixing bracket (302) near the mounting plate (301), and the end of the guide post (307) near the fixing bracket (302) slides through the rotating plate (304). A motor (303) is fixedly installed on the side of the fixing bracket (302) away from the mounting plate (301), and the end of the output shaft of the motor (303) near the mounting plate (301) is fixedly connected to the rotating plate (304).

5. The positioning fixture for wheel hub processing protection as described in claim 4, characterized in that, A square plate (403) is rotatably mounted inside the mounting plate (401). A second motor (402) is fixedly mounted on the upper surface of the mounting plate (401), and the bottom end of the output shaft of the second motor (402) is fixedly connected to the square plate (403). Four connecting rods (404) are rotatably mounted inside the square plate (403), and the connecting rods (404) are rectangularly distributed. A connecting strip (405) is fixedly mounted on the bottom end of the connecting rod (404). An installation rod (406) is rotatably mounted on the lower surface of the connecting strip (405) away from the connecting rod (404), and the bottom end of the installation rod (406) slides through the mounting plate (401). An installation column (407) is fixedly mounted on the bottom end of the installation rod (406). A connecting column (408) is fixedly mounted on the lower surface of the mounting plate (401), and the top end of the connecting column (408) is located at the center of the lower surface of the mounting plate (401).

6. The positioning fixture for wheel hub machining protection as described in claim 5, characterized in that, The bottom outer surface of the connecting post (408) and the four mounting posts (407) is slidably fitted with a movable tube (410), and the bottom end of the movable tube (410) is in contact with the upper surface of the protective plug (203). Two limiting strips (411) are fixedly installed on the outer surface of the top end of the inner ring of the movable tube (410), and the five sets of limiting strips (411) are slidably disposed inside the connecting post (408) and the four mounting posts (407). The upper surface of the limiting strips (411) is fixedly installed with a second spring (412), and the top ends of the five sets of second springs (412) are fixedly connected to the connecting post (408) and the four mounting posts (407). Inside the connecting column (408) and the four mounting columns (407), a fixing tube (413) is fixedly installed at the bottom end of each of the connecting column (408) and the four mounting columns (407). Two limiting blocks (414) are slidably installed inside the fixing tube (413), and the upper surface of the limiting block (414) is in contact with the lower surface of the top end of the fixing column (208). A third spring (415) is fixedly installed on the side of the two limiting blocks (414) that are far away from each other, and the end of the third spring (415) that is far away from the limiting block (414) is fixedly connected to the inside of the fixing tube (413).

7. The positioning fixture for wheel hub machining protection as described in claim 6, characterized in that, Slide bars (503) are fixedly installed on both sides of the horizontal plate (502), and the slide bars (503) are slidably disposed inside the support frame (501). Screws (504) are rotatably installed on both sides of the support frame (501), and slide bars (503) are threaded onto the screws (504). A first bevel gear (505) is fixedly installed at the bottom end of the screws (504). Mounting blocks (508) are fixedly installed on both sides of the support frame (501), and rotating gears are rotatably installed within the two mounting blocks (508). The rod (506) has two second bevel gears (507) fixedly installed on its outer surface, and the first bevel gear (505) meshes with the second bevel gear (507). The outer surface of the rotating rod (509) is rotatably mounted with a connecting frame (510). Four swing bars (511) are rotatably mounted inside the connecting frame (510), and the four swing bars (511) are arranged in a rectangular shape. The end of the swing bar (511) away from the connecting frame (510) is rotatably connected to the moving plate (104).

8. The positioning fixture for wheel hub machining protection as described in claim 7, characterized in that, The bottom end of the movable column (516) is fixedly installed with a limiting rod (517), and the bottom end of the limiting rod (517) slides through the fixed plate (514). Four fifth springs (518) are fixedly installed on the lower surface of the fixed plate (514), and the bottom end of the fifth springs (518) is fixedly connected to the handle of the limiting rod (517).

9. The positioning fixture for wheel hub machining protection as described in claim 8, characterized in that, A second toothed plate (311) is fixedly installed on the side of the vertical plate (306) on the right side. A transmission rod (309) is rotatably installed on the side of the mounting plate (301) on the right side near the loading platform (201). The transmission rod (309) and the rotating rod (506) are driven by a synchronous pulley and a synchronous belt. A first gear (310) is fixedly installed on the outer surface of the transmission rod (309), and the first gear (310) and the second toothed plate (311) are in active meshing.

10. The spraying method used in the positioning fixture for wheel hub processing protection as described in claim 9, characterized in that, Includes the following steps: Step 1: Move the limiting ball (103) by rotating the rod. The limiting ball (103) positions the wheel hub so that the wheel hub is located at the center of the positioning platform (101). Adjust the position of the wheel hub hole by rotating the rod (509). Step 2: Move the protective plug by rotating the plate (304) so ​​that the protective plug (203) is inserted into the hole of the wheel hub to protect the hole of the wheel hub; Step 3: Apply spray paint to the outer surface and inner rim of the wheel hub; Step 4: Bake the painted wheel hubs.

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