A visual detection device for double conveyor belt synchronous adjustment

Abstract

The application relates to the technical field of machine vision, and discloses a visual detection device for synchronous adjustment of double conveying belts, which is used for deviation rectification of first and second conveying belts. The visual detection device comprises a detection light source for emitting first detection light, the first detection light transmits through the first conveying belt to form a first deviation rectification detection point; and a reflection assembly for reflecting the first detection light to form second detection light, the second detection light is parallel to the first detection light and opposite to the first detection light, and the second detection light transmits through the second conveying belt to form a second deviation rectification detection point. The reflection assembly is used to make the detection light emitted by the same detection light source form deviation rectification detection points on the two conveying belts at the same time, so that synchronous deviation rectification of the two conveying belts is realized, and the cost of deviation rectification is reduced, the efficiency of deviation rectification is improved, and the accuracy of deviation rectification is improved.

Description

Technical Field

[0001] This invention relates to the field of machine vision technology, and in particular to a visual inspection device for synchronous adjustment of dual conveyor belts. Background Technology

[0002] A conveyor belt is a material handling device. Conveyor belts operate stably and reliably and can be used for long-distance material transport, so they are widely used in various automated production fields.

[0003] In some cases, a single conveyor belt is insufficient to meet the conveying requirements, necessitating the use of dual conveyor belts for simultaneous, bidirectional, or coordinated material transport. After a period of operation, conveyor belts may become misaligned; if not corrected promptly, this will affect the normal transport of materials. For dual conveyor belts, synchronous correction of both belts is required. However, accurate synchronous correction of two conveyor belts is difficult to achieve with the human eye. Acquiring positional images for each conveyor belt separately and adjusting them individually based on image analysis data would be prohibitively costly and inefficient, failing to meet practical needs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a visual inspection device for synchronous adjustment of dual conveyor belts, solving the problem that existing technologies struggle to balance accuracy, cost, and efficiency in dual conveyor belt correction.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A visual inspection device for synchronous adjustment of two conveyor belts, used to correct the deviation of the first and second conveyor belts.

[0007] The visual inspection device includes:

[0008] A detection light source is used to emit a first detection light beam, which passes through the first conveyor belt and forms a first correction detection point on the first conveyor belt;

[0009] A reflective component is used to reflect the first detection light to form a second detection light. The second detection light is parallel to the first detection light and has the opposite direction to the first detection light. The second detection light passes through the second conveyor belt and forms a second correction detection point on the second conveyor belt.

[0010] Optionally, the reflective assembly includes a first reflector, a second reflector, and a third reflector;

[0011] The first detection light line is incident into a first reflection position of the first reflecting element, and after sequentially reflecting through the first reflecting element, the second reflecting element and the third reflecting element, the first detection light line is incident into a second reflection position of the first reflecting element, and is reflected by the first reflecting element at the second reflection position to form the second detection light line.

[0012] Optionally, the first conveying belt and the second conveying belt are parallel to a reference plane, the first reflecting element is arranged obliquely to the reference plane, and distances between the first reflection position and the second reflection position and the reference plane are different.

[0013] Optionally, the third reflecting element comprises a first sub-reflection surface and a second sub-reflection surface, and the first sub-reflection surface and the second sub-reflection surface are perpendicular to each other.

[0014] After the first detection light line is reflected by the second reflecting element, the first detection light line is sequentially incident into a third reflection position of the first sub-reflection surface and a fourth reflection position of the second sub-reflection surface, and a distance between the fourth reflection position and the reference plane is the same as a distance between the second reflection position and the reference plane.

[0015] Optionally, the third reflecting element is composed of two mutually perpendicular triangular prisms.

[0016] Optionally, the first reflecting element and the second reflecting element are both triangular prisms.

[0017] Optionally, the visual detection device for double-conveying-belt synchronous adjustment further comprises a first scale and a second scale, the first scale is arranged on the first conveying belt, and the second scale is arranged on the second conveying belt.

[0018] Optionally, the visual detection device for double-conveying-belt synchronous adjustment further comprises an imaging device for photographing the first conveying belt and the second conveying belt.

[0019] Optionally, the detection light source is a laser light source.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] The present application provides a visual detection device for double-conveying-belt synchronous adjustment, which utilizes a reflecting assembly to enable detection light lines emitted by the same detection light source to form deviation correction detection points on two conveying belts at the same time, so as to realize synchronous deviation correction of the two conveying belts, and to improve the accuracy of deviation correction while reducing the cost of deviation correction and improving the efficiency of deviation correction. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0023] Fig. 1 A structural schematic diagram of a visual detection device for synchronous adjustment of double conveying belts provided by the present application;

[0024] Fig. 2 Another structural schematic diagram of a visual detection device for synchronous adjustment of double conveying belts provided by the present application;

[0025] Fig. 3 Still another structural diagram of a visual detection device for synchronous adjustment of double conveying belts provided by the present application.

[0026] In the above drawings: 11, detection light source; 12, first reflecting element; 13, second reflecting element; 14, third reflecting element; 21, first conveying belt; 22, second conveying belt; 30, imaging device. DETAILED DESCRIPTION

[0027] In order to make the objectives, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the following described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the scope of protection of the present application.

[0028] It should be understood that, in the description of the present application, the specific embodiments are only used to explain the present application, but not to limit the present application. Among them, the exemplary embodiments are described as processes or methods depicted by flowcharts; although the flowcharts describe the operations or steps of the processes in a certain order, many of the operations or steps can be implemented in parallel, concurrently or simultaneously, and the order of the operations can be rearranged. When the operations or steps are completed, the corresponding process can be terminated, and there can be additional steps not included in the drawings. The above-mentioned processes can correspond to methods, functions, procedures, subroutines, subprograms, etc., and the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0029] The term "comprising" and variations thereof as used herein is used in the inclusive sense of "including" and "including but not limited to". The term "based on" means "based, at least in part, on". The technical solutions of the present application are further illustrated below in conjunction with the accompanying drawings and by specific embodiments; it can be understood that, for the convenience of description, only part of the structure related to the present application is shown in the drawings rather than all the structures.

[0030] Please refer to Figs. 1 to 3 The present application provides a visual detection device for synchronous adjustment of double conveying belts, which is used to realize deviation correction of a first conveying belt 21 and a second conveying belt 22.

[0031] The first conveying belt 21 and the second conveying belt 22 are parallel to a reference plane, i.e. the planes where the first conveying belt 21 and the second conveying belt 22 are parallel to each other; at the same time, the first conveying belt 21 and the second conveying belt 22 can be in the same plane or in different planes, and the visual detection device provided in the embodiment can realize synchronous deviation correction of the two conveying belts.

[0032] Specifically, the visual detection device comprises:

[0033] A detection light source 11 is used to emit a first detection light, the first detection light transmits through the first conveying belt 21 to form a first deviation correction detection point A on the first conveying belt 21; in the embodiment, the detection light source 11 is a laser light source.

[0034] A reflection assembly is used to reflect the first detection light to form a second detection light, the second detection light is parallel to the first detection light and opposite to the direction of the first detection light, and the second detection light transmits through the second conveying belt 22 to form a second deviation correction detection point B on the second conveying belt 22.

[0035] It can be understood that the first conveying belt 21 and the second conveying belt 22 are made of transparent or semi-transparent materials, so that the first detection light and the second detection light can be transmitted.

[0036] The reflection assembly is used to make the detection light emitted by the same detection light source 11 form deviation correction detection points on the two conveying belts at the same time, so as to realize synchronous deviation correction of the two conveying belts.

[0037] It can be understood that in one of the embodiments of the present application, the visual detection device further comprises an imaging device 30 for photographing the first conveying belt 21 and the second conveying belt 22, the imaging device 30 is used to photograph the first conveying belt 21 and the second conveying belt 22, and based on the position comparison result of the first deviation correction detection point A and the second deviation correction detection point B, the deviation correction adjustment of the first conveying belt 21 and the second conveying belt 22 is realized.

[0038] In another embodiment of the present application, a standard reference point can also be arranged on the first conveyor belt 21 and the second conveyor belt 22 respectively, and the position of the first deviation correction detection point A is compared with the standard reference point on the first conveyor belt 21 to adjust the deviation of the first conveyor belt 21, and the deviation of the second conveyor belt 22 is adjusted in the same way, so that the imaging device 30 and the image analysis system can be omitted, and the application scenario with low precision requirement and low cost budget can be applied.

[0039] In the embodiment, the reflection assembly includes a first reflection component 12, a second reflection component 13 and a third reflection component 14.

[0040] Specifically, the first detection light is incident into a first reflection position of the first reflection component 12, and after being reflected by the first reflection component 12, the second reflection component 13 and the third reflection component 14 in sequence, the first detection light is incident into a second reflection position of the first reflection component 12, and the first detection light is reflected by the first reflection component 12 at the second reflection position to form a second detection light.

[0041] The first reflection component 12 is inclined to a reference plane, and the distance between the first reflection position and the second reflection position and the reference plane is different.

[0042] The second reflection component 13 and the third reflection component 14 are used to make the second detection light and the first detection light symmetrical about a standard central axis of the first conveyor belt 21 and the second conveyor belt 22, so that the first deviation correction detection point A and the first deviation correction detection point A can be used as the deviation correction basis. It can be understood that the standard central axis is the central axis between the first conveyor belt 21 and the second conveyor belt 22 in the standard state.

[0043] Further, the third reflection component 14 includes a first sub-reflection surface and a second sub-reflection surface, and the first sub-reflection surface and the second sub-reflection surface are perpendicular to each other. After being reflected by the second reflection component 13, the first detection light is incident into a third reflection position of the first sub-reflection surface and a fourth reflection position of the second sub-reflection surface in sequence, and the distance between the fourth reflection position and the second reflection position and the reference plane is the same.

[0044] By means of the third reflection component 14, the incident position of the second detection light when returning to the first reflection component 12 is changed.

[0045] In the embodiment, the first reflection component 12 and the second reflection component 13 are both triangular prisms, and the third reflection component 14 is composed of two triangular prisms perpendicular to each other.

[0046] Further, in the embodiment, in order to realize the synchronous deviation correction of the first conveyor belt 21 and the second conveyor belt 22, the visual detection device for synchronous adjustment of the double conveyor belts further includes a first scale and a second scale.

[0047] In one embodiment, the first scale is arranged on the first conveying belt 21, and the second scale is arranged on the second conveying belt 22. In this case, the imaging device 30 is used to take images and compare the scale difference between the first deviation detection point A and the second deviation detection point B on the first conveying belt 21 and the second conveying belt 22. If there is a difference, the position of the conveying belt is adjusted until there is no scale difference between the first deviation detection point A and the second deviation detection point B on the first conveying belt 21 and the second conveying belt 22.

[0048] In another embodiment, the first scale is arranged above the first conveying belt 21, and the second scale is arranged above the second conveying belt 22. The first detection light passes through the first scale to form the first deviation standard point, and the second detection light passes through the second scale to form the second deviation standard point. During deviation correction, the first conveying belt 21 is adjusted so that the first deviation detection point A is coaxial with the first deviation standard point, and the second conveying belt 22 is adjusted so that the second deviation detection point B is coaxial with the second deviation standard point, thereby achieving deviation correction of the first conveying belt 21 and the second conveying belt 22.

[0049] The above description and the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A visual inspection device for synchronous adjustment of dual conveyor belts, characterized in that, Used to achieve the correction of the first conveyor belt (21) and the second conveyor belt (22); The visual inspection device includes: The detection light source (11) is used to emit a first detection light, which passes through the first conveyor belt (21) and forms a first correction detection point on the first conveyor belt (21); A reflective component is used to reflect the first detection light to form a second detection light. The second detection light is parallel to the first detection light and opposite in direction to the first detection light. The second detection light passes through the second conveyor belt (22) and forms a second correction detection point on the second conveyor belt (22). The reflective assembly includes a first reflector (12), a second reflector (13), and a third reflector (14). The first detection light enters the first reflection position of the first reflector (12), and after being reflected sequentially by the first reflector (12), the second reflector (13) and the third reflector (14), it enters the second reflection position of the first reflector (12), and is reflected by the first reflector (12) at the second reflection position to form the second detection light. The aforementioned visual inspection device for synchronous adjustment of dual conveyor belts further includes: A first scale and a second scale, the first scale being mounted on the first conveyor belt (21) and the second scale being mounted on the second conveyor belt (22); Imaging device (30) for photographing the first conveyor belt (21) and the second conveyor belt (22).

2. The visual inspection device for synchronous adjustment of dual conveyor belts according to claim 1, characterized in that, The first conveyor belt (21) and the second conveyor belt (22) are both parallel to a reference plane. The first reflector (12) is inclined to the reference plane. The distances between the first reflection position and the second reflection position and the reference plane are different.

3. The visual inspection device for synchronous adjustment of dual conveyor belts according to claim 2, characterized in that, The third reflector (14) includes a first sub-reflective surface and a second sub-reflective surface, wherein the first sub-reflective surface and the second sub-reflective surface are perpendicular to each other; After the first detection light is reflected by the second reflector (13), it sequentially enters the third reflection position of the first sub-reflecting surface and the fourth reflection position of the second sub-reflecting surface. The distance between the reference planes of the fourth reflection position and the second reflection position is the same.

4. The visual inspection device for synchronous adjustment of dual conveyor belts according to claim 3, characterized in that, The third reflector (14) is composed of two mutually perpendicular triangular prisms.

5. The visual inspection device for synchronous adjustment of dual conveyor belts according to claim 1, characterized in that, Both the first reflector (12) and the second reflector (13) are triangular prisms.

6. The visual inspection device for synchronous adjustment of dual conveyor belts according to claim 1, characterized in that, The detection light source (11) is a laser light source.

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