An angle-adjustable car door hinge grinding device

Abstract

This utility model provides an angle-adjustable automotive door hinge grinding device, belonging to the field of hinge processing technology. It solves the technical problem of easily and conveniently adjusting the grinding angle of the hinge, thereby improving grinding efficiency. The angle-adjustable automotive door hinge grinding device includes a worktable. Cylinders are fixedly connected to both sides of the bottom center of the worktable. An adjustment mechanism is located at the center of the top of the worktable. The adjustment mechanism includes a U-shaped frame located in the middle of the worktable, with the output ends of two cylinders passing through the worktable and fixedly connected to the bottom of the U-shaped frame. Arc-shaped grooves and arc-shaped holes are formed on both sides of the top of the U-shaped frame. A common arc-shaped platform is slidably connected between the two arc-shaped grooves. This utility model ensures the stability and accuracy of angle adjustment, reduces grinding quality problems caused by angle deviations, improves the consistency of hinge grinding, saves production preparation time, and increases the efficiency of grinding operations.

Description

Technical Field

[0001] This utility model belongs to the field of hinge processing technology, and relates to the production of automotive parts, specifically an angle-adjustable automotive door hinge grinding device. Background Technology

[0002] In automobile manufacturing, door hinges, as key components connecting the door and the body, directly affect the assembly quality, smoothness of opening and closing, and lifespan of the door due to their surface smoothness and precision. Because hinge structures are often irregularly shaped and have multiple connecting surfaces, traditional sanding operations often rely on manual hand-held sanding tools. This is not only labor-intensive and inefficient, but also prone to inconsistent sanding precision due to variations in operating techniques, making it difficult to meet the high requirements of modern production for component consistency.

[0003] However, existing devices are mostly designed for specific hinge models and lack flexibility in angle adjustment. When facing hinge surfaces to be polished at different positions and angles, it is necessary to frequently change tooling or adjust the overall structure of the equipment, which not only increases production preparation time but also reduces the versatility and production efficiency of the equipment. Therefore, an angle-adjustable automotive door hinge polishing device was designed. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an angle-adjustable car door hinge grinding device. The technical problem this invention aims to solve is to facilitate quick and convenient adjustment of the hinge grinding angle, thereby improving grinding efficiency.

[0005] The objective of this utility model can be achieved through the following technical solutions: An adjustable car door hinge polishing device includes a worktable. Cylinders are fixedly connected to both sides of the bottom center of the worktable. An adjustment mechanism is located at the center of the top of the worktable. The adjustment mechanism includes a U-shaped frame located in the middle of the worktable, with the output ends of two cylinders passing through the worktable and fixedly connected to the bottom of the U-shaped frame. Arc-shaped grooves and arc-shaped holes are formed on both sides of the top of the U-shaped frame. A single arc-shaped platform is slidably connected between the two arc-shaped grooves. Vertical plates are fixedly connected to both sides of the bottom of the arc-shaped platform. Two protrusions are fixedly connected to the opposite side of each vertical plate. Each protrusion is slidably connected to adjacent arc-shaped holes. A U-shaped rod is fixedly connected to the center of the bottom of the arc-shaped platform. A scale is formed on one side of the U-shaped frame near the arc-shaped hole, and a pointer is located in the center of the arc-shaped platform near the scale.

[0006] The working principle of this utility model is as follows: the arc-shaped platform can slide on the arc-shaped groove. With the help of the pointer and scale, the user can know the angle between the arc-shaped platform and the horizontal plane, and then accurately adjust the angle of the hinge, which makes it easier to polish evenly and improve the polishing quality.

[0007] The top of the U-shaped frame is equipped with a driving mechanism, which includes U-shaped side plates fixedly connected to both ends of the top of the U-shaped frame. The two U-shaped side plates are rotatably connected to the middle of the same lead screw, and a U-shaped screw block is screwed to the middle of the lead screw. A lead screw nut adapted to the lead screw is fixedly sleeved at the bottom of the U-shaped screw block. The U-shaped screw block fits against the top of the U-shaped frame and is adapted to the U-shaped rod. The driving mechanism also includes a bidirectional motor fixedly connected to one side of the outer wall of the U-shaped side plate, and the output end of the bidirectional motor passes through the U-shaped side plate and is fixedly connected to one end of the lead screw.

[0008] Using the above structure, by controlling the forward and reverse rotation of the bidirectional motor, the control arc-shaped platform can be deflected to the left or right along with the hinge.

[0009] The top of the arc-shaped platform is provided with a clamping mechanism, which includes a fixing block fixedly connected to both sides of the top of the arc-shaped platform. A threaded rod is screwed into the middle of one of the fixing blocks, and a screw nut adapted to the threaded rod is fixedly sleeved in the middle of the fixing block on that side. A knob is fixedly connected to the outer end of the threaded rod, and a clamping block is rotatably connected to the other end of the threaded rod, and the clamping block is in contact with the arc-shaped platform.

[0010] By adopting the above structure and setting the clamping mechanism, the hinge can be stably fixed, so that the hinge is in a stable state during grinding, thus ensuring the quality of grinding. A grinding mechanism is provided at the top of the workbench near the U-shaped frame. The grinding mechanism includes a support frame fixedly connected to the middle side of the top of the workbench. A triangular plate is fixedly connected to the top of the support frame, and guide rollers are rotatably connected to both ends of the bottom of the triangular plate near the U-shaped frame. A drive roller is rotatably connected to the top of the triangular plate on the same side, and the same grinding belt is sleeved between the drive roller and the two guide rollers. A drive motor is fixedly connected to the top of the side of the triangular plate near the support frame, and the output end of the drive motor passes through the triangular plate and is fixedly connected to one end of the drive roller. The grinding mechanism also includes two pressure rollers rotatably connected to the bottom of the triangular plate near the guide roller, and both pressure rollers are located inside the grinding belt and are in contact with the grinding belt.

[0011] With the above structure, the setting of the pressure rollers allows the grinding belt located between the two guide rollers to fit closely to the hinge grinding area, thus improving the grinding quality.

[0012] Compared with the prior art, the adjustable-angle car door hinge grinding device of this utility model has the following advantages: 1. In this utility model, by adopting the technical means of adjustment mechanism and drive mechanism, the rotation of bidirectional motor drives the U-shaped screw block to move, so that the arc table with hinge can adjust the grinding angle. This effectively solves the problem of the inconvenience of adjusting the grinding angle of the hinge mentioned in the background technology, thereby ensuring the stability and accuracy of the angle adjustment, reducing the grinding quality problems caused by angle deviation, improving the consistency of hinge grinding, saving production preparation time, and improving the efficiency of grinding operation.

[0013] 2. In this utility model, by setting up a clamping mechanism, the hinge is always stably fixed between itself and the arc-shaped table during the hinge grinding process, thereby improving the grinding quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an angle-adjustable car door hinge grinding device proposed in this utility model. Figure 2 This is a schematic diagram of the adjustment mechanism of an angle-adjustable car door hinge grinding device proposed in this utility model. Figure 3 This is a schematic diagram of the arc-shaped platform of an angle-adjustable car door hinge grinding device proposed in this utility model. Figure 4 This is a schematic diagram of the drive mechanism of an angle-adjustable car door hinge grinding device proposed in this utility model. Figure 5 This is a schematic diagram of the grinding mechanism of an angle-adjustable car door hinge grinding device proposed in this utility model.

[0015] In the diagram, 1. Workbench; 102. Cylinder; 2. Adjustment mechanism; 201. U-shaped frame; 202. Arc groove; 203. Arc hole; 204. Arc platform; 205. Scale; 206. Pointer; 207. Vertical plate; 208. U-shaped rod; 209. Protrusion; 3. Grinding mechanism; 301. Support frame; 302. Triangular plate; 303. Drive motor; 304. Drive roller; 305. Guide roller; 306. Pressure roller; 4. Drive mechanism; 401. U-shaped side plate; 402. Bidirectional motor; 403. Lead screw; 404. U-shaped screw block; 5. Clamping mechanism; 501. Fixing block; 502. Threaded rod; 503. Clamping block. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figures 1-5As shown, an angle-adjustable car door hinge grinding device includes a worktable 1. Cylinders 102 are fixedly connected to both sides of the bottom center of the worktable 1. An adjustment mechanism 2 is provided at the top center of the worktable 1. The adjustment mechanism 2 includes a U-shaped frame 201 located in the middle of the worktable 1. The output ends of the two cylinders 102 pass through the worktable 1 and are fixedly connected to the bottom of the U-shaped frame 201. Arc-shaped grooves 202 and arc-shaped holes 203 are provided on both sides of the top of the U-shaped frame 201. The grooves 202 are slidably connected by the same arc-shaped platform 204, and vertical plates 207 are fixedly connected to both sides of the bottom of the arc-shaped platform 204. Two protrusions 209 are fixedly connected to the opposite side of each vertical plate 207. Each protrusion 209 is slidably connected in the adjacent arc-shaped holes 203. A U-shaped rod 208 is fixedly connected to the middle of the bottom of the arc-shaped platform 204. A scale 205 is opened on one side of the U-shaped frame 201 near the arc-shaped hole 203. A pointer 206 is set in the middle of the arc-shaped platform 204 near the scale 205.

[0018] In this utility model, a driving mechanism 4 is provided on the top of the U-shaped frame 201, and the driving mechanism 4 includes U-shaped side plates 401 fixedly connected to both ends of the top of the U-shaped frame 201. The same lead screw 403 is rotatably connected between the middle of the two U-shaped side plates 401, and a U-shaped screw block 404 is screwed to the middle of the lead screw 403. A lead screw nut that matches the lead screw 403 is fixedly sleeved at the bottom of the U-shaped screw block 404. The U-shaped screw block 404 fits against the top of the U-shaped frame 201, and the U-shaped screw block 404 matches the U-shaped rod 208.

[0019] In this utility model, the drive mechanism 4 also includes a bidirectional motor 402 fixedly connected to one side of the outer wall of the U-shaped side plate 401, and the output end of the bidirectional motor 402 passes through the U-shaped side plate 401 and is fixedly connected to one end of the lead screw 403.

[0020] In this utility model, a clamping mechanism 5 is provided on the top of the arc-shaped platform 204. The clamping mechanism 5 includes a fixing block 501 fixedly connected to both sides of the top of the arc-shaped platform 204. A threaded rod 502 is screwed into the middle of one of the fixing blocks 501. A screw nut that is compatible with the threaded rod 502 is fixedly sleeved in the middle of the fixing block 501 on this side. A knob is fixedly connected to the outer end of the threaded rod 502. A clamping block 503 is rotatably connected to the other end of the threaded rod 502, and the clamping block 503 is in contact with the arc-shaped platform 204.

[0021] In this utility model, a grinding mechanism 3 is provided at the top of the workbench 1 near the U-shaped frame 201. The grinding mechanism 3 includes a support frame 301 fixedly connected to one side of the middle of the top of the workbench 1. A triangular plate 302 is fixedly connected to the top of the support frame 301. Guide rollers 305 are rotatably connected to both ends of the bottom of the triangular plate 302 near the U-shaped frame 201. A drive roller 304 is rotatably connected to the top of the triangular plate 302 on the same side. The same grinding belt is sleeved between the drive roller 304 and the two guide rollers 305. A drive motor 303 is fixedly connected to the top of the side of the triangular plate 302 near the support frame 301. The output end of the drive motor 303 passes through the triangular plate 302 and is fixedly connected to one end of the drive roller 304.

[0022] In this utility model, the grinding mechanism 3 also includes two pressure rollers 306 rotatably connected to the bottom of the triangular plate 302 near the guide roller 305, and both pressure rollers 306 are located inside the grinding belt, and the two pressure rollers 306 are in contact with the grinding belt.

[0023] The working principle of this utility model is as follows: When using the device, the hinge to be polished is placed on the top of the arc-shaped platform 204. Rotating the knob of the threaded rod 502 causes the clamping block 503 to move closer to another fixed block 501, thus clamping and fixing the hinge. Simultaneously activating two cylinders 102 raises the arc-shaped platform 204 with the hinge to a suitable height. Activating the drive motor 303 causes the drive roller 304 to rotate with the polishing belt. The two pressure rollers 306 ensure that the polishing belt can fit against the hinge, achieving polishing. When the polishing angle needs to be adjusted, the bidirectional motor 402 is activated, causing the lead screw 40... 3. The U-shaped screw block 404 moves with the bidirectional motor 402, which rotates in both directions, allowing the U-shaped screw block 404 to move left and right on the top of the U-shaped frame 201. This causes the U-shaped screw block 404, along with the U-shaped rod 208 and the arc-shaped platform 204, to move left and right. At the same time, the arc-shaped platform 204 slides on the arc-shaped groove 202 and slides on the arc-shaped hole 203 via the protrusion 209, causing the arc-shaped platform 204 to move left and right with the hinge. This causes the angle between the arc-shaped platform 204 and the horizontal plane to change. The angle of the arc-shaped platform 204 can be easily observed through the cooperation of the pointer 206 and the scale 205, thereby realizing the adjustment of the hinge angle and facilitating uniform grinding.

[0024] In summary, in this utility model, the device controls the drive mechanism 4 to adjust the position of the arc-shaped platform 204 with the hinge, thereby changing the angle between the arc-shaped platform 204 and the horizontal plane, adjusting the position of the hinge and the grinding belt, and improving the grinding efficiency. At the same time, the extension and retraction of the cylinder 102 further controls the position of the hinge. The clamping mechanism 5 makes it easy to fix the hinge and improve the accuracy of grinding.

[0025] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An angle-adjustable automotive door hinge grinding device, comprising a worktable (1), characterized in that, The workbench (1) has cylinders (102) fixedly connected to both sides of the bottom center. The workbench (1) has an adjustment mechanism (2) at the top center. The adjustment mechanism (2) includes a U-shaped frame (201) located in the middle of the workbench (1). The output ends of the two cylinders (102) are fixedly connected to the bottom of the U-shaped frame (201) through the workbench (1). The top two sides of the U-shaped frame (201) are provided with arc-shaped grooves (202) and arc-shaped holes (203). The two arc-shaped grooves (202) are slidably connected to each other. An arc-shaped platform (204) is provided, and vertical plates (207) are fixedly connected to both sides of the bottom of the arc-shaped platform (204). Two protrusions (209) are fixedly connected to the opposite side of each vertical plate (207). Each protrusion (209) is slidably connected in the arc-shaped hole (203) that is close to each other. A U-shaped rod (208) is fixedly connected to the middle of the bottom of the arc-shaped platform (204). A scale (205) is provided on one side of the U-shaped frame (201) near the arc-shaped hole (203). A pointer (206) is provided in the middle of the arc-shaped platform (204) near the scale (205).

2. The adjustable-angle automotive door hinge grinding device according to claim 1, characterized in that, The top of the U-shaped frame (201) is provided with a driving mechanism (4), and the driving mechanism (4) includes U-shaped side plates (401) fixedly connected to both ends of the top of the U-shaped frame (201). The two U-shaped side plates (401) are rotatably connected to the middle of the same lead screw (403), and a U-shaped screw block (404) is screwed to the middle of the lead screw (403). The bottom of the U-shaped screw block (404) is fixedly fitted with a lead screw nut that is compatible with the lead screw (403). The U-shaped screw block (404) is in contact with the top of the U-shaped frame (201), and the U-shaped screw block (404) is compatible with the U-shaped rod (208).

3. The adjustable-angle automotive door hinge grinding device according to claim 2, characterized in that, The drive mechanism (4) also includes a bidirectional motor (402) fixedly connected to one side of the outer wall of the U-shaped side plate (401), and the output end of the bidirectional motor (402) is fixedly connected to one end of the lead screw (403) through the U-shaped side plate (401).

4. The adjustable-angle automotive door hinge grinding device according to claim 1, characterized in that, The top of the arc-shaped platform (204) is provided with a clamping mechanism (5). The clamping mechanism (5) includes a fixing block (501) fixedly connected to both sides of the top of the arc-shaped platform (204). A threaded rod (502) is screwed into the middle of one of the fixing blocks (501). A screw nut that matches the threaded rod (502) is fixedly sleeved in the middle of the fixing block (501) on this side. A knob is fixedly connected to the outer end of the threaded rod (502). A clamping block (503) is rotatably connected to the other end of the threaded rod (502), and the clamping block (503) is in contact with the arc-shaped platform (204).

5. The adjustable-angle automotive door hinge grinding device according to claim 1, characterized in that, A grinding mechanism (3) is provided at the top of the workbench (1) near the U-shaped frame (201). The grinding mechanism (3) includes a support frame (301) fixedly connected to the middle side of the top of the workbench (1). A triangular plate (302) is fixedly connected to the top of the support frame (301). Guide rollers (305) are rotatably connected to both ends of the bottom of the triangular plate (302) near the U-shaped frame (201). A drive roller (304) is rotatably connected to the top of the triangular plate (302) on the same side. The same grinding belt is sleeved between the drive roller (304) and the two guide rollers (305). A drive motor (303) is fixedly connected to the top of the side of the triangular plate (302) near the support frame (301). The output end of the drive motor (303) passes through the triangular plate (302) and is fixedly connected to one end of the drive roller (304).

6. The adjustable-angle automotive door hinge grinding device according to claim 5, characterized in that, The grinding mechanism (3) also includes two pressure rollers (306) rotatably connected to the bottom of the triangular plate (302) near the guide roller (305), and both pressure rollers (306) are located inside the grinding belt, and the two pressure rollers (306) are in contact with the grinding belt.

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