Automatic tire positioning device based on visual identification technology

Abstract

The utility model discloses an automatic tire positioning device based on the visual identification technology. The automatic tire positioning device comprises a rack, a visual unit arranged at the top of the rack, a conveying belt, liftable roller carriers arranged on the two sides of the conveying belt and two sets of holding arm assemblies symmetrically arranged on the two sides of the conveying belt. The embracing arm assembly comprises two embracing arms which are arranged in an involution mode, the embracing arms are connected through a set of meshed gears, and an electric roller is arranged at the free end of each embracing arm. According to the automatic tire positioning device, feature points on a tire are recognized through the vision unit, then the tire is rotated through the embracing arm assembly, the feature points are rotated to specific positions, the tire is placed in a horizontal mode, feeding and discharging are facilitated, the embracing arm assembly is not limited by the size of the tire, the tires of various sizes can be centered, and the tire positioning efficiency is improved. And the universality of the positioning device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic wheel positioning, in particular to an automatic tire positioning device based on visual recognition technology. Background Art

[0002] During various stages of tire production, it's sometimes necessary to locate certain characteristic points on the tire so that subsequent production operations can use these points as a reference. A tire characteristic point can be a pattern, mark, or raised point that distinguishes it from other locations on the tire. This solution aims to leverage machine vision, aided by a tire arm centering and rotation device, to control the tire characteristic point to stay at a specific position relative to other reference points.

[0003] In existing technology, such as the tire dynamic balancing and uniformity testing equipment disclosed in patent (CN105571781B), tire positioning begins by first placing the tire longitudinally on a tire mounting frame. The tire positioning clamping control module then controls the tire positioning clamping device based on a received tire positioning signal to position and secure the tire on the tire mounting frame. However, this longitudinal positioning method is limited by the adjustment capabilities of the positioning clamping device. If the tire is too large or too small, it will exceed the adjustment range of the positioning clamping device, making it impossible to effectively position the tire. Furthermore, the tire must be manually placed on the tire mounting frame before positioning and then manually removed after testing. This results in inefficient tire positioning.

[0004] Manually placing tire feature points at the desired locations is time-consuming and labor-intensive, and is not conducive to achieving production automation. Utility Model Content

[0005] In order to solve the above technical problems, the utility model discloses an automatic tire positioning device based on visual recognition technology.

[0006] The utility model includes the following technical solutions:

[0007] A tire automatic positioning device based on visual recognition technology is characterized by comprising a frame, a visual unit arranged on the top of the frame, a conveyor belt, roller frames arranged on both sides of the conveyor belt and capable of being raised and lowered, and two sets of arm assemblies symmetrically arranged on both sides of the conveyor belt;

[0008] The arm assembly includes two arms arranged opposite to each other, the arms are connected to each other through a group of meshing gears, and a motorized roller is provided at the free end of the arm.

[0009] Furthermore, the conveyor belt is arranged on the frame in a horizontal direction, and a drive motor is provided on one side of the frame, and the drive motor is transmission-connected to the conveyor belt.

[0010] Further, the two groups of arm components are connected by an arm transmission mechanism, which includes a cylinder and a pull rod. The cylinder is drivingly connected to the pull rod through a first swing arm, and the other end of the pull rod is connected with a second swing arm;

[0011] The first swing arm is connected to the gear of one side arm component through a first rotating shaft, and the second swing arm is connected to the gear of the other side arm component through a second rotating shaft.

[0012] Further, the roller frame is connected with a roller frame driving cylinder.

[0013] Further, the middle of the conveyor belt is a toothed belt.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The conveyor belt drives the tire to the lower part of the vision unit. Two groups of arm components symmetrically arranged on both sides of the conveyor belt clamp the tire. The electric roller rotates to drive the tire to rotate, and the vision unit determines that the feature point rotates to a specific position.

[0016] The tire is horizontally placed on the conveyor belt, and the conveyor belt can be connected with other tire production equipment to improve the loading and unloading efficiency of the tire.

[0017] The conveyor belt conveys the tire to the middle position, then the cylinder pushes the first swing arm to rotate. The first swing arm drives the second swing arm to rotate through the pull rod. At the same time, the two arms on both sides achieve synchronous movement under the meshing drive of the gears to clamp the tire. The electric roller at the rear end of the arm drives the tire to rotate, and the vision unit determines that the feature point rotates to a specific position.

[0018] The cylinder acts in the reverse direction, pulling the first swing arm to rotate. The first swing arm drives the second swing arm to rotate through the pull rod, releasing the tire. The conveyor belt drives the tire into the next process.

[0019] Since the extendable range of the arm is large and not limited by the tire size, tires of common sizes on the market can be positioned, thus improving the versatility of the device. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic side structure diagram of the present utility model;

[0022] Figure 2 This is a top view of the structure of the utility model;

[0023] Figure 3 This is a schematic structural diagram of the arm transmission mechanism of the present utility model.

[0024] Reference numerals:

[0025] 1-frame, 2-vision unit, 3-conveyor belt, 4-roller frame, 5-drive motor, 6-mounting base, 7-arm, 8-pull rod, 9-cylinder, 10-electric roller, 11-gear, 12-first swing arm, 13-second swing arm, 14-first rotating shaft, 15-second rotating shaft, 16-connecting block. DETAILED DESCRIPTION

[0026] The following is a combination of the appended examples of the present invention Figures 1-3 , the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] like Figure 1 As shown, the tire automatic positioning device based on visual recognition technology in this embodiment includes a frame 1, a visual unit 2, a conveyor belt 3, a roller frame 4 and an arm assembly. The visual unit 2 is arranged on the top of the frame 1 and corresponds to the position of the conveyor belt 3; the visual unit 2 can adopt an industrial camera commonly used in this field, which can find the feature points marked on the tire by taking photos or videos, and then send a signal to the arm assembly to rotate the feature points to the desired position.

[0028] The conveyor belt 3 is arranged on the frame 1 in the horizontal direction. A drive motor 5 is provided on one side of the frame 1. The drive motor 5 is connected to the conveyor belt 3 for conveying tires. A roller frame 4 is provided on each side of the conveyor belt 3, and an arm assembly is provided on the outer side of each roller frame 4.

[0029] The roller frame is mounted on a roller frame drive cylinder and is normally positioned below the toothed belt that carries the tire in the middle of the conveyor. Once the tire is in place, the roller frame drive cylinder extends, raising the roller frame above the toothed belt. This significantly reduces friction between the tire and the conveyor, facilitating rotation and positioning under external power.

[0030] The arm assembly includes two arms arranged opposite to each other, which are connected by a set of meshing gears 11. A motorized roller 10 is provided at the free end of the arm.

[0031] The electric drum itself is a motor with a built-in drive function. After the electric drum grips the tire, it is powered on, causing the drum to rotate, driving the tire. Because the tire has been lifted off the toothed belt by the roller frame, friction is greatly reduced, allowing the tire to start at any position under the drive of the arm motor, and the drum motor stops immediately after receiving a visual signal.

[0032] The two groups of arm assemblies are connected by an arm transmission mechanism, which includes a cylinder and a pull rod. The cylinder is connected to the pull rod 8 through a first swing arm 12, and the other end of the pull rod 8 is connected to a second swing arm 13.

[0033] The first swing arm 12 is connected to the gear of the arm assembly on one side through a first rotating shaft, and the second swing arm is connected to the gear of the arm assembly on the other side through a second rotating shaft.

[0034] The cylinder 9 is connected to the frame 1 via a connecting block 16. The cylinder drives the first swing arm to swing, which pushes and pulls the second swing arm via a pull rod. During the swinging process, the first and second swing arms 12 and 13 drive the clasping arms 7 on both sides to swing synchronously around the first and second rotating shafts 14 and 15, thereby driving the gears on both sides concentric with the first and second rotating shafts to rotate. The gears mesh and transmit the power, driving the clasping arms to clamp or loosen.

[0035] A conveyor belt transports the tire to the tire feature point positioning mechanism platform, where a vision unit is mounted above the desired location. Once the tire enters the positioning mechanism platform, it stops. The roller assembly rises, and two sets of arm assemblies symmetrically located on either side of the conveyor belt grip the tire. The motorized drum rotates, driving the tire to rotate to the specific location determined by the vision unit's harmonic peak.

[0036] The tires are placed horizontally on the conveyor belt, which can be connected with other tire production equipment to complete various subsequent tasks.

[0037] The conveyor belt transports the tire to the middle position, the roller cylinder rises, and then the cylinder pushes the first swing arm to rotate. The first swing arm drives the second swing arm to rotate through the pull rod. At the same time, the two arms on both sides achieve synchronous movement under the meshing transmission of the gears, holding the tire tightly. The electric roller at the rear end drives the tire to rotate, and the feature point is determined by the visual unit to rotate to a specific position.

[0038] The cylinder moves in the opposite direction, pulling the first swing arm to rotate. The first swing arm drives the second swing arm to rotate through the pull rod, loosening the tire, and the transmission belt drives the tire to the next process.

[0039] Since the arm has a large extendable range, the degree of tightening or loosening can be controlled by the cylinder and is not limited by the tire size. Tires of common sizes currently on the market can be positioned, thereby improving the versatility of the device.

[0040] The vision unit, drive motor, and cylinder can all be externally connected to an automatic control system to achieve automatic control and automatic tire positioning. It can cooperate with an automated production line to achieve automatic tire monitoring and has broad application prospects.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0043] In the description of the embodiments, unless otherwise clearly specified and limited, terms such as "arranged", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or connected through an intermediate medium, and it can also be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A tire automatic positioning device based on visual recognition technology, characterized in that, It includes a frame (1), a vision unit (2) arranged at the top of the frame (1), a conveyor belt (3), liftable roller frames (4) arranged on both sides of the conveyor belt (3), and two groups of arm components symmetrically arranged on both sides of the conveyor belt (3); The arm component includes two arms (7) arranged in an opposing manner, and the arms are connected by a set of meshing gears (11). An electric roller is provided at the free end of the arm (7).

2. The tire automatic positioning device based on visual recognition technology according to claim 1, characterized in that, A driving motor (5) is provided on one side of the frame (1), and the driving motor (5) is in transmission connection with the conveyor belt (3).

3. The tire automatic positioning device based on visual recognition technology according to claim 1, characterized in that, The two groups of arm components are connected by an arm transmission mechanism. The arm transmission mechanism includes a cylinder (9) and a pull rod (8). The cylinder (9) is in transmission connection with the pull rod (8) through a first swing arm (12), and the other end of the pull rod (8) is connected with a second swing arm (13); The first swing arm (12) is connected to the gear (11) of one side of the arm component through a first rotating shaft (14), and the second swing arm (13) is connected to the gear of the other side of the arm component through a second rotating shaft (15).

4. The tire automatic positioning device based on visual recognition technology according to claim 3, characterized in that, The cylinder (9) is connected to the frame (1) through a connecting block (16).

5. The tire automatic positioning device based on visual recognition technology according to claim 1, characterized in that, The roller frame (4) is connected with a roller frame driving cylinder.

6. The tire automatic positioning device based on visual recognition technology according to claim 1, characterized in that, The middle of the conveyor belt (3) is a toothed belt.

Images