A full-automatic steering wheel polishing device

Abstract

The present application belongs to the field of automobile steering wheel processing technology, and particularly relates to a full-automatic polishing equipment for steering wheels, which comprises a workbench, an electrical cabinet, a feeding unit, a grabbing unit and a polishing unit are arranged in the workbench, a worker places steering wheels on a feeding trolley one by one, a mechanical hand automatically grabs the steering wheels and polishes them, when the mechanical hand grabs one of the steering wheels on the feeding trolley, a cylinder can push the steering wheel to a specified position, so that the position grabbed by the mechanical hand is the same each time, after polishing, the mechanical hand places the steering wheel on a discharging trolley, when a batch of steering wheels are all polished, a worker pushes the discharging trolley to change the steering wheels, the steering wheels can be automatically grabbed, the outer wall and the inner wall of the steering wheels can be automatically polished, and the polished steering wheels can be automatically placed, thereby forming an automatic polishing process; compared with the prior art, the polishing efficiency and the polishing effect are improved.

Description

Technical Field

[0001] This invention relates to the field of automotive steering wheel processing technology, and more specifically, to a fully automatic steering wheel polishing device. Background Technology

[0002] The car steering wheel is one of the important components of a car. During the production process, the steering wheel frame needs to undergo processes such as grinding.

[0003] For example, the device for polishing car steering wheels disclosed in patent announcement number CN110936251B includes a square box. A motor is fixedly installed on the lower inner wall of the square box. A fixed plate is fixedly installed on the output shaft of the motor. The steering wheel is placed on the fixed plate, and the frame in the middle of the steering wheel is placed between two vertical rods. When the output shaft of the motor drives the fixed plate to rotate, the steering wheel is fixed to the fixed plate by the two vertical rods and the telescopic rod. The steering wheel rotates with the fixed plate. The output shaft of the second motor drives the connecting rod to rotate. The threaded column installed at the left end of the connecting rod moves to the right in the connecting column, which can push the movable block to the left in the square groove, pushing the grinding block towards the steering wheel. When it is pushed to the leftmost end, the U-shaped groove opened on the grinding block fits the shape of the steering wheel.

[0004] In the above process, each time the steering wheel is polished, it is placed between two vertical rods before polishing. This requires manual labor to remove each steering wheel one by one and place it in the polishing position. This process, from placing the steering wheel to polishing and then placing the polished steering wheel back, consumes a significant amount of time, reducing the efficiency and progress of steering wheel polishing.

[0005] In this patent, during the polishing process, the inner and outer edges of the steering wheel are polished using a U-shaped groove. For example, in a three-spoke steering wheel with three through holes, the polishing block cannot completely polish the inner walls of these three through holes. It can only polish along the inner walls of the through holes and the outer wall of the entire steering wheel, which reduces the polishing effect on the steering wheel. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a fully automatic steering wheel polishing device that improves polishing efficiency and polishing effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A fully automatic steering wheel polishing device includes a worktable with a protective railing connected to it. The worktable houses an electrical cabinet, a feeding unit, a gripping unit, and a polishing unit.

[0009] The electrical cabinet includes control circuits, which are electrically connected to the feeding unit, the gripping unit, and the grinding unit.

[0010] The unloading unit has an loading carriage for placing unpolished steering wheels and an unloading carriage for placing polished steering wheels;

[0011] The material handling unit includes a robotic arm and a gripper for gripping the steering wheel, with the gripper positioned on the output end of the robotic arm.

[0012] The grinding unit includes a belt sander for grinding the outer wall of the steering wheel and an abrasive for grinding the inner wall of the steering wheel, with the abrasive positioned above the belt sander.

[0013] The present invention is further configured such that: the abrasive component includes a loading plate and a grinding rod, one end of the grinding rod is fixed to the loading plate, the grinding rod is provided with a plurality of protrusions, the grinding rod can pass through the through hole on the steering wheel and the protrusions can grind the inner wall of the through hole.

[0014] The present invention is further configured such that: both the loading car and the unloading car are provided with a support frame and several sets of feeding components, the feeding components are placed on the support frame, and the feeding components include a fixed plate, a placement rod and a support plate, one side of the fixed plate, one end of the placement rod and one side of the support plate are all connected to the support frame, the fixed plate is placed above the support plate, the placement rod is placed between the fixed plate and the support plate, and both the fixed plate and the support plate are provided with limiting blocks.

[0015] The invention is further configured such that: the support frame on the loading vehicle is also provided with a cylinder for pushing the steering wheel, and the cylinder is placed between the fixed plate and the placement rod.

[0016] The present invention is further configured such that both the fixing plate and the support plate are provided with a plurality of locking blocks, the locking blocks being made of rubber.

[0017] The invention is further configured such that: the gripper hand is provided with a positioning pin that extends into the airbag release hole on the steering wheel and three clamping plates surrounding the outside of the positioning pin, and the clamping plates are provided with an arc panel that bends toward the positioning pin.

[0018] The invention is further configured such that a positioning camera is also provided on the gripper hand.

[0019] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0020] Manual workers place the steering wheels onto the loading trolley one by one and arrange them neatly. The robotic arm automatically grabs the materials and polishes the steering wheels. When the robotic arm grabs one of the steering wheels on the loading trolley, a cylinder can push the steering wheel to the designated position, ensuring that the robotic arm grabs the same position each time. After polishing, the robotic arm places the steering wheel onto the unloading trolley. When all the steering wheels in a batch have been polished, the manual workers push them out of the unloading trolley for material replacement. Because it can automatically grab the steering wheels, automatically polish the outer and inner walls of the steering wheels, and automatically place the polished steering wheels, it forms an automated polishing process, thereby improving polishing efficiency and polishing effect. Attached Figure Description

[0021] Figure 1 This is a perspective view of an embodiment of the present invention;

[0022] Figure 2 This is a perspective view of the loading vehicle of the present invention;

[0023] Figure 3 This is a schematic diagram of the grinding unit of the present invention;

[0024] Figure 4 This is a partial schematic diagram of the material handling unit of the present invention.

[0025] 1. Workbench; 2. Electrical cabinet; 3. Loading trolley; 4. Unloading trolley; 5. Robotic arm; 6. Gripper;

[0026] 7. Belt sander; 8. Abrasive parts; 101. Guardrail; 102. Sliding door; 301. Support frame; 302. Feeding assembly; 303. Fixing plate; 304. Storage rod; 305. Support plate; 306. Limiting block; 307. Cylinder; 308. Clamping block; 309. Fastening plate; 601. Positioning pin; 602. Clamping plate; 603. Arc panel; 604. Positioning camera; 701. Frame plate; 801. Loading plate; 802. Grinding rod. Detailed Implementation

[0027] 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.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] like Figures 1 to 4 As shown, A is a steering wheel. The fully automatic steering wheel grinding equipment includes a workbench 1, on which a guardrail 101 is provided. The guardrail 101 is connected to the workbench 1. Two sliding doors 102 are provided on one side of the guardrail 101. The sliding doors 102 are hinged to the guardrail 101. When the sliding doors 102 are opened, a person can enter the workbench 1 to complete the repair or replacement of the workpiece.

[0030] Electrical cabinet 2 includes control circuits, which are connected to the feeding unit, gripping unit, and grinding unit via electrical wires. The control circuits ensure smooth flow of the electrical wires and drive the feeding unit, gripping unit, and grinding unit to operate normally when the control circuits are running.

[0031] The material unloading unit includes a loading carriage 3 and an unloading carriage 4. The loading carriage 3 holds the unpolished steering wheel, and the unloading carriage 4 holds the polished steering wheel.

[0032] The steering wheel is a three-spoke steering wheel. There are three points on the outer rim of the three-spoke steering wheel that are connected to the center, resulting in three through holes on the steering wheel. These three through holes are a top through hole one and two through holes two located below through hole one.

[0033] Both the loading car 3 and the unloading car 4 are equipped with support frames 301 and four sets of feeding components 302.

[0034] With four sets of feeding components 302, more steering wheels can be placed. Later, the steering wheels on the four sets of feeding components 302 can be picked up one by one without manual placement, which improves work efficiency.

[0035] The feeding assembly 302 includes a fixed plate 303, a placement rod 304 and a support plate 305. One side of the fixed plate 303, one end of the placement rod 304 and one side of the support plate 305 are fixed to the support frame. There are two placement rods 304. The fixed plate 303 is above the support plate 305 and the placement rod 304 is placed between the fixed plate 303 and the support plate 305.

[0036] The support frame 301 on the loading car 3 is also equipped with a cylinder 307 for pushing the steering wheel. The cylinder 307 is placed between the fixed plate 303 and the placement rod 304. Both the fixed plate 303 and the support plate 305 are equipped with a locking block 308. Since the locking block 308 is made of rubber, the locking block 308 is elastic.

[0037] The bottom of the steering wheel is placed between adjacent clips 308 on the support plate 305. The two through holes 2 on the steering wheel pass through the two corresponding storage rods 304 respectively. The through hole 1 on the steering wheel passes through the fixing plate 303, so that the top surface of the inner wall of the through hole 1 of the steering wheel fits against the outer wall of the fixing plate 303, and the steering wheel is hung on the fixing plate 303.

[0038] Limiting blocks 306 are installed on the top surfaces of both the support plate 305 and the fixing plate 303. The limiting blocks 306 are fixed to the fixing plate 303 and the support plate 305. When the cylinder 307 pushes the steering wheel, the outermost steering wheel will abut against the limiting block 306, so that the steering wheel will not fall off.

[0039] A fastening plate 309 is also installed on the bottom surface of the support plate 305. The fastening plate 309 is integrally formed with the support plate 305. The fastening plate 309 is triangular in shape and has a triangular connecting groove. A reinforcing rib is installed in the connecting groove. Both ends of the reinforcing rib are welded to the inner wall of the connecting groove. Since the support plate 305 needs to bear the weight of five steering wheels, the design between the fastening plate 309 and the reinforcing rib can increase its load-bearing capacity.

[0040] The gripper 6 on the material handling unit, through the operation of the robotic arm 5, has a positioning pin 601 and three clamping plates 602 surrounding the positioning pin 601. These three clamping plates expand outwards as the robotic arm 5 operates, allowing them to pass through through holes one and two in sequence to grip the steering wheel. Since the robotic arm 5 contains a drive motor, the gripper 6 can rotate, thus rotating the steering wheel.

[0041] The steering wheel itself has an airbag release hole. When gripping, the positioning pin 601 extends into the airbag release hole on the steering wheel to limit its position, and then the clamping plate 602 clamps it. The clamping plate 602 is equipped with an arc panel 603 that bends towards the positioning pin 601, making the steering wheel less prone to displacement and more stable during the gripping process. The gripper 6 is also equipped with a positioning camera 604, which detects whether the gripper 6 has correctly passed through the first and second through holes and gripped it. If the gripper 6 has not gripped the steering wheel correctly, the positioning camera 604 will sense this and the gripper 6 will stop operating. Otherwise, if the gripper 6 has gripped the steering wheel correctly, the next step of polishing the steering wheel will be performed.

[0042] The grinding unit is also equipped with two support plates 701. The belt sander 7 is placed between the two support plates 701. The belt sander 7 is also equipped with a rotary motor, the output end of which is connected to the belt sander 7. The gripper 6 places the steering wheel on the belt sander 7. At this time, the steering wheel is rotating, and the outer wall of the steering wheel is in contact with the outer surface of the belt sander rubber wheel on the belt sander 7. When the rotary motor operates, the belt sander 7 rotates, causing the belt sander rubber wheel to grind the outer wall of the steering wheel. The support plate 701 is also equipped with a top plate. The abrasive part 8 on the grinding unit is placed on the top plate, and the abrasive part 8 is also placed above the belt sander 7.

[0043] The abrasive component 8 includes a loading plate 801 and a grinding rod 802. One end of the grinding rod 802 is fixed to the loading plate 801. Several protrusions are installed on the grinding rod 802. The protrusions grind the inner wall surfaces of the through holes 1 and 2 on the steering wheel through friction.

[0044] Working principle: The control circuit in the electrical cabinet 2 operates, and the robot arm 5 grabs the outermost steering wheel on the loading cart 3 through the gripper 6. The positioning pin 601 on the gripper 6 extends into the airbag release hole on the steering wheel on the loading cart 3. The three clamping plates 602 grip the steering wheel airbag, ensuring the accuracy and strength of the robot arm 5 in grabbing the steering wheel, and bringing the steering wheel to the grinding unit.

[0045] When a steering wheel on the loading trolley 3 is gripped by the robotic arm 5, the operating cylinder 307 pushes the steering wheel, causing it to move outwards sequentially. This ensures that the robotic arm 5 can grab the outermost steering wheel each time.

[0046] When polishing the outer wall of the steering wheel, after the gripper 6 grasps the steering wheel, the robotic arm 5 moves the steering wheel until it moves onto the sanding belt of the belt sander 7, so that the outer wall of the steering wheel is in contact with the sanding belt of the belt sander 7. Then the belt sander 7 is driven, and at the same time the gripper 6 rotates the steering wheel, so that the belt sander 7 polishes the outer wall of the steering wheel.

[0047] When the inner wall of the steering wheel is being polished, the robotic arm 5 moves the gripper 6 and causes the polishing rod 802 to pass through the through hole 1 on the steering wheel. The polishing rod 802 fits against the inner wall of the arc-shaped edge of the through hole 1 on the steering wheel. Then the drive motor is started, causing the steering wheel to rotate back and forth, so that the polishing rod 802 polishes the arc-shaped surface on the through hole 1.

[0048] By moving the robotic arm 5 up and down, the gripper 6 can move up and down and left and right with the steering wheel, so that the grinding rod 802 can grind along the two right-angled surfaces on the through hole.

[0049] After grinding the first through hole on the steering wheel, the steering wheel is removed from the sanding belt of the belt sander 7 by the robotic arm 5, and the grinding rod 802 is pulled out from the first through hole. The grinding position is adjusted, and the grinding of the second through hole begins: after the steering wheel is adjusted, the grinding rod 802 passes through the first through hole 2 on the steering wheel, and the steering wheel is placed on the sanding belt of the belt sander 7. The grinding rod 802 grinds the inner wall of the first through hole 2. After grinding, the steering wheel is removed from the grinding rod 802 by the robotic arm 5, and the second through hole 2 is sent to the grinding position for grinding. By grinding the inner walls of the first through hole and the two second through holes, the inner wall of the steering wheel can be ground.

[0050] After grinding, the robotic arm 5 places the steering wheel on the unloading carriage 4. The fixing plate 303 on the unloading carriage 4 passes through one of the through holes of the steering wheel, and the two placement rods 304 on the unloading carriage 4 pass through the second through hole of the steering wheel. The outer wall of the steering wheel is placed on the support plate 305 on the unloading carriage 4. After placement, the robotic arm 5 goes to the loading carriage 3 to grab a new steering wheel that needs to be ground. After all the steering wheels are ground, the unloading carriage 4 is pushed out manually. After the steering wheels are taken out, the unloading carriage 4 is placed back in its original position. Then, the 20 new steering wheels that need to be ground are placed on the new loading carriage 3, and a new first cycle begins.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automatic steering wheel polishing device, characterized in that, Including the workbench (1). The workbench (1) is equipped with a guardrail (101), which is connected to the workbench (1). The workbench (1) is equipped with an electrical cabinet (2), a feeding unit, a gripping unit, and a grinding unit. Electrical cabinet (2) includes control circuits, all of which are electrically connected to the feeding unit, the gripping unit and the grinding unit; The unloading unit has a loading carriage (3) for placing unpolished steering wheels and an unloading carriage (4) for placing polished steering wheels. Both the loading car (3) and the unloading car (4) are equipped with a support frame (301) and several sets of feeding components (302). The feeding components (302) are placed on the support frame (301). The feeding components (302) include a fixing plate (303), a storage rod (304) and a support plate (305). One side of the fixed plate (303), one end of the storage rod (304), and one side of the support plate (305) are all connected to the support frame (301). The fixing plate (303) is placed above the support plate (305), and the storage rod (304) is placed between the fixing plate (303) and the support plate (305). Both the fixing plate (303) and the support plate (305) are provided with limiting blocks (306). The material handling unit includes a robotic arm (5) and a gripper (6) for gripping the steering wheel, with the gripper (6) placed on the output end of the robotic arm (5); The gripper (6) is provided with a positioning pin (601) that extends into the airbag release hole on the steering wheel and three clamping plates (602) surrounding the outside of the positioning pin (601). The clamping plates (602) are provided with an arc panel (603) that bends toward the positioning pin (601). The grinding unit includes a belt sander (7) for grinding the outer wall of the steering wheel and an abrasive (8) for grinding the inner wall of the steering wheel, the abrasive (8) being positioned above the belt sander (7). The abrasive component (8) includes a loading plate (801) and a grinding rod (802). One end of the grinding rod (802) is fixed to the loading plate (801). The grinding rod (802) has several protrusions. The grinding rod (802) can pass through the through hole on the steering wheel and the protrusions can grind the inner wall of the through hole.

2. The fully automatic steering wheel polishing equipment according to claim 1, characterized in that, The support frame (301) on the loading trolley (3) is also equipped with a cylinder (307) for pushing the steering wheel. The cylinder (307) is placed between the fixed plate (303) and the placement rod (304).

3. The fully automatic steering wheel polishing equipment according to claim 2, characterized in that, Both the fixing plate (303) and the support plate (305) are provided with a number of locking blocks (308), which are made of rubber.

4. The fully automatic steering wheel polishing equipment according to claim 1, characterized in that, The gripper (6) is also equipped with a positioning camera (604).

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