Positioning clamp for spray-coating of wheel trim ring

Patent metadata

Field	Value
Publication number	US-11219915-B2
Application number	US-201916596273-A
Country	US
Kind code	B2
Filing date	Oct 8, 2019
Priority date	Jan 15, 2019
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A positioning clamp for spray-coating of a wheel trim ring includes a lower base plate, a circular bracket, an upper base plate, a plurality of guide rods, a plurality of sliding support parts and a distance adjusting mechanism. The distance adjusting mechanism is configured to drive the plurality of sliding support parts to approach a central position along the guide rods and to move away from the central position along the guide rods. According to the positioning clamp for spray-coating of the wheel trim ring, the position of each sliding support part can be adjusted to adapt to wheel trim rings of different sizes. Therefore, the positioning clamp for spray-coating of the wheel trim ring can replace a large number of positioning clamps of different sizes, and has the advantages of being simple in structure, stable and reliable in positioning, low in manufacturing cost and the like.

First claim

The invention claimed is:

1. A positioning clamp for spray-coating of a wheel trim ring, comprising:
a lower base plate, a circular bracket, an upper base plate, a plurality of guide rods, a plurality of sliding support parts and a distance adjusting mechanism;
wherein the circular bracket is welded to the lower base plate, the upper base plate is welded at a middle position in the circular bracket, and a circular hole is formed in a middle position of the upper base plate;
wherein the plurality of guide rods penetrate through the circular bracket and are horizontally and fixedly installed at an upper end of the distance adjusting mechanism, the plurality of sliding support parts are configured to slide along the plurality of guide rods, and the plurality of guide rods and the plurality of sliding support parts are uniformly distributed along a circumference of the circular bracket;
wherein the distance adjusting mechanism passes through the circular hole formed in the middle position of the upper base plate and is fixed on the lower base plate and the upper base plate, the upper end of the distance adjusting mechanism is higher than a height of each of the plurality of guide rods, and the distance adjusting mechanism is configured to drive the plurality of sliding support parts to approach a central position along the plurality of guide rods and to move away from the central position along the plurality of guide rods; and
wherein when the wheel trim ring is placed at the positioning clamp, under a gravity of the wheel trim ring, a conical base of each of the plurality of sliding support parts moves downwards along an axial direction of a second guide column of each of the plurality of sliding support parts until an upper plane of a sliding base of each of the plurality of sliding support parts contacts the wheel trim ring, so as to position the wheel trim ring on the positioning clamp.

2. The positioning clamp for spray-coating of the wheel trim ring according to claim 1 , wherein the distance adjusting mechanism comprises an air cylinder, a support plate, first guide columns, first rotating shafts, second rotating shafts, third rotating shafts, sliding blocks, connecting rods, fourth rotating shafts and a chute base;
wherein the numbers of the third rotating shafts, the first guide columns, the first rotating shafts, the second rotating shafts, the sliding blocks, the connecting rods and the fourth rotating shafts are all more than one and are the same as the number of the plurality of sliding support parts;
wherein a bottom of the air cylinder is fixedly connected to the lower base plate, a piston rod of the air cylinder is fixedly connected with the support plate above the air cylinder, and the third rotating shafts are uniformly installed on the support plate in a circumferential direction;
wherein each of the third rotating shafts is provided with a corresponding one of the first guide columns through clearance fit, an upper end of each of the first guide columns is installed on a corresponding one of the sliding blocks through a corresponding one of the first rotating shafts, and each of the sliding blocks is movably connected with a corresponding one of the connecting rods through a corresponding one of the second rotating shafts;
wherein both ends of each of the connecting rods are movably connected with a corresponding one of the plurality of sliding support parts and the corresponding one of the sliding blocks through a corresponding one of the fourth rotating shafts and the corresponding one of the second rotating shafts respectively;
wherein the chute base is fixedly arranged on the upper base plate, and the plurality of guide rods are fixedly arranged on an upper end of the chute base;
wherein a plurality of vertical chutes with the same number as the first guide columns are arranged on the chute base, and the first guide columns and the sliding blocks are configured to slide up and down in the vertical chutes on the chute base;
wherein the piston rod of the air cylinder extends to push the support plate to move upwards, and the support plate pushes the first guide columns and the sliding blocks to move upwards, so that the connecting rods approach the plurality of guide rods, and the plurality of sliding support parts are far away from the central position along the plurality of guide rods; and
wherein the piston rod of the air cylinder contracts to drive the support plate to move downwards, and the support plate drives the first guide columns and the sliding blocks to move downwards, so that the connecting rods are far away from the plurality of guide rods, and the plurality of sliding support parts approach the central position along the plurality of guide rods.

3. The positioning clamp for spray-coating of the wheel trim ring according to claim 2 , wherein a plurality of threaded holes are uniformly distributed along one side of the vertical chutes from bottom to top in a direction perpendicular to the sliding blocks on a circumference of the chute base, adjusting bolts are arranged in the plurality of threaded holes, and by rotating the adjusting bolts at positions of the sliding blocks, the positions of the sliding blocks are configured to be fixed, thus fixing positions of the plurality of sliding support parts.

4. The positioning clamp for spray-coating of the wheel trim ring according to claim 2 , wherein a length of each of the connecting rods is adjustable.

5. The positioning clamp for spray-coating of the wheel trim ring according to claim 2 , wherein each of the plurality of sliding support parts comprises the sliding base, a spring, the second guide column, a guide sleeve and the conical base;
wherein a lower end of the sliding base is provided with a through hole, a corresponding one of the plurality of guide rods is inserted into a middle through hole of the sliding base, and the lower end of the sliding base is connected with the corresponding one of the connecting rods through the corresponding one of the fourth rotating shafts;
wherein an upper end of the sliding base is a hollow cylinder, a lower end of the second guide column passes through the hollow cylinder to be fixedly installed at a middle position of the sliding base, the guide sleeve is embedded in a blind hole in a lower end of the conical base through interference fit; and
wherein a blind hole in a lower end of the guide sleeve receives the second guide column with a gap left, the spring passes through the guide sleeve and is freely placed between the conical base and the sliding base, and a gap exists between the conical base and the sliding base to ensure free vertical sliding of the conical base.

6. The positioning clamp for spray-coating of the wheel trim ring according to claim 5 , wherein an upper portion of the conical base includes a cone, a lower portion of the conical base includes a cylinder, and the conical base is placed in the hollow cylinder of the sliding base; and a bottom surface of the conical base includes a circular groove around the blind hole in the lower end of the conical base, and the spring is placed in the circular groove.

7. The positioning clamp for spray-coating of the wheel trim ring according to claim 6 , wherein the conical base comprises nylon.

8. The positioning clamp for spray-coating of the wheel trim ring according to claim 3 , wherein each of the plurality of sliding support parts comprises the sliding base, a spring, the second guide column, a guide sleeve and the conical base;
wherein a lower end of the sliding base is provided with a through hole, a corresponding one of the plurality of guide rods is inserted into a middle through hole of the sliding base, and the lower end of the sliding base is connected with the cor

Assignees

• Citic Dicastal Co Ltd

Inventors

• Xu Zuo
• Liu Xiao
• Li Yudong
• Chen Xiaopeng

Classifications

• B05B13/0285 Primary

  Stands for supporting individual articles to be sprayed, e.g. doors, vehicle body parts · CPC title

• B05C13/02

  for particular articles · CPC title

• B23B2260/03

  Clamps · CPC title