CN214555414U - Automatic detection device for bolt joint and end based on machine vision - Google Patents

Abstract

An automated bolted joint and end detection device based on machine vision, comprising: the support comprises two vertical rods and a cross rod; the conveying assembly penetrates through the bracket and is arranged below the bracket; the two first acquisition assemblies are arranged above the cross rod of the support and are arranged at intervals along the length direction of the support, and the acquisition ends of the first acquisition assemblies are opposite to the conveying assembly so as to detect the bolt joint; two second acquisition assemblies are arranged on the support, the two second acquisition assemblies are arranged on the two vertical rods respectively, and the detection ends of the two second acquisition assemblies are arranged oppositely so as to detect the end heads of the bolts. The utility model discloses bolted joint and end automated inspection device based on machine vision have the collection convenience, detect the precision height, advantages such as degree of automation height.

Description

Automatic detection device for bolt joint and end based on machine vision

Technical Field

The utility model relates to an oil pipe detection area, concretely relates to bolted joint and end automatic checkout device based on machine vision.

Background

The quality of the bolt joint in the oil pipeline influences the safety and stability of the oil pipeline connection, and the sealing quality of the end part plays a decisive role in the sealing effect of the oil pipeline. In the actual production process, the quality of the bolt joint and the end part is detected manually, the detection method is high in detection cost, low in speed, low in precision and difficult to keep the quality of a product stable, and the detection result is influenced by human factors. An automated inspection device based on machine vision is now provided that can perform parameter measurements and quality testing on bolted joints and ends in oil pipelines.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a bolted joint and end automatic checkout device based on machine vision.

According to the utility model discloses automatic detection device of bolted joint and end based on machine vision, include: the support comprises two vertical rods and a cross rod, and the two vertical rods are respectively arranged at two ends of the cross rod to enable the support to be in an inverted U shape; the conveying assembly is arranged below the bracket; the two first acquisition assemblies are arranged above the cross rod of the support and are arranged at intervals along the length direction of the support, and the acquisition ends of the first acquisition assemblies are opposite to the conveying assembly so as to detect the bolt joint; two second collection assemblies, two the second collection assembly is established on the support, two second collection assemblies are established respectively on two on the montant, and two the sense terminal of second collection assembly sets up relatively to detect the bolt end, automatically controlled subassembly, two first collection assembly and two each of second collection assembly all with automatically controlled subassembly links to each other, so that it is right first collection assembly with the information that the second collection assembly gathered carries out contrastive analysis.

According to the embodiment of the utility model provides a bolted joint and end automatic checkout device based on machine vision carry out information acquisition to bolted joint through first collection subassembly and second collection subassembly to carry and carry out the analysis for automatically controlled subassembly, thereby detect out the bolt that has the defect.

Further, the delivery assembly comprises: a conveyor belt; and the positioning plates are fixed on the conveying belt and are arranged at intervals along the running direction of the conveying belt.

Further, a groove extending along the length direction of the positioning plate is formed above the positioning plate, so that the pipeline can be placed in the groove.

Further, the first acquisition assembly comprises: the first protection cylinder is fixed on the bracket and provided with a first detection port; the first camera is arranged in the protective cylinder, and a shooting lens of the first camera is opposite to the first detection port; the 90-degree annular light source is arranged on the first detection port; the second acquisition assembly comprises: the second protection cylinder is fixed on the bracket and provided with a second detection port; the second camera is arranged in the protective cylinder, and a shooting lens of the second camera is opposite to the second detection port; the surface-shaped light source is arranged below the first acquisition assembly and is opposite to the second detection port.

Furthermore, protective glasses are further arranged on the first detection port and the second detection port, so that the detection efficiency of the first detection assembly and the second detection assembly is improved.

Further, the first telecentric lens is arranged in the first protective cylinder and is positioned between the first camera and the first detection port; and the second telecentric lens is arranged in the second protection barrel and is positioned between the second camera and the second detection port.

Further, each of the first camera and the first camera is a ccd industrial camera.

Further, each of the transport assembly, the first camera, and the second camera is connected to the electronic control assembly.

Further, bolted joint and end automatic checkout device based on machine vision still includes adsorption component, adsorption component with automatically controlled subassembly links to each other, and establishes on the support.

Drawings

Fig. 1 is a schematic structural diagram of the collecting device of the present invention.

Fig. 2 is a schematic structural diagram of the positioning plate of the collecting device of the present invention.

A bracket 1; a vertical rod 11; a crossbar 12;

a conveying assembly 2; a conveyor belt 21; a positioning plate 22; a groove 221;

a first acquisition assembly 3; the first protective tube 31; a 90 degree annular light source 32;

a second acquisition assembly 4; a second protective tube 41; a surface-shaped light source 42;

an electronic control assembly 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, according to the utility model discloses a bolted joint and end automatic checkout device based on machine vision, including support 1, conveyor components 2, two first collection subassemblies 3, two second collection subassemblies 4 and automatically controlled subassembly 5.

The support 1 comprises two vertical rods 11 and a cross rod 12, wherein the two vertical rods 11 are respectively arranged at two ends of the cross rod 12, so that the support 1 is in an inverted U shape.

The conveying assembly 2 is arranged below the bracket 1. Whereby the oil pipe is placed on the delivery unit 2 for inspection of the bolts on the oil pipe.

Two first collection subassemblies 3 are established in the horizontal pole 12 top of support 1, and two first collection subassemblies 3 set up along the length direction (the left and right direction as shown in fig. 1) interval of support 1, and the collection end of first collection subassembly 3 is relative with conveyor assembly 2 to detect bolted joint.

Two second acquisition assemblies 4 are established on support 1, and two second acquisition assemblies 4 are established respectively on two montants 11, and the sense terminal of two second acquisition assemblies 4 sets up relatively to detect the bolt end.

Each of the two first collecting assemblies 3 and the two second collecting assemblies 4 is connected with the electric control assembly 5 so as to compare and analyze the information collected by the first collecting assemblies 3 and the second collecting assemblies 4.

The embodiment of the utility model provides a bolted joint and end automatic checkout device based on machine vision, through the setting of first collection subassembly 3 and second collection subassembly 4, carry out information acquisition to the bolt on the defeated oil pipe, and carry and give automatically controlled subassembly 5, thereby carry out analysis and contrast through automatically controlled subassembly 5 and detect the image of shooing and carry out image display and image, thereby realize bolted joint's overall height, thread length, the big footpath of screw thread, footpath in the screw thread, the screw thread path, the pitch, the measurement of profile of tooth semiangle, and end diameter and defect detection.

Specifically, the conveyor assembly 2 comprises: the conveying belt 21 and a plurality of locating plates 22, a plurality of locating plates 22 are fixed on the conveying belt 21, and set up along the traffic direction interval of conveying belt 21. Specifically, locating plate 22 accessible screw or bolt mounting are installed on conveyer belt 21 along left right direction for defeated oil pipe transports defeated oil pipe to support 1 below through conveyer belt 21, thereby makes things convenient for first collection subassembly 3 and second collection subassembly 4 to carry out information acquisition to the bolt on defeated oil pipe.

Specifically, a groove 221 extending along the length direction (left-right direction as viewed in fig. 1) is formed above the positioning plate 22 so that the pipe can be placed in the groove 221. Make locating plate 22 drive defeated oil pipe motion, prevent that defeated oil pipe from taking place to roll when carrying for locating plate 22 sets up more rationally.

Specifically, the first collecting assembly 3 includes: a first protective cylinder 31, a first camera, and a 90-degree annular light source 32.

The first protection tube 31 is fixed to the holder 1, and the first protection tube 31 has a first detection port. The first camera is arranged in the protective barrel, a shooting lens of the first camera is opposite to the first detection port, and the 90-degree annular light source 32 is arranged on the first detection port through the supporting frame.

The second collecting assembly 4 comprises: a second protective cylinder 41, a second camera and a surface light source 42.

The second protection cylinder 41 is fixed to the holder 1, and the second protection cylinder 41 has a second detection port. The second camera is arranged in the protective barrel, a shooting lens of the second camera is opposite to the second detection port, the surface-shaped light source 42 is arranged below the first acquisition assembly 3, and the surface-shaped light source 42 is opposite to the second detection port. From this, the bolt on defeated oil pipe is shot to the first camera of accessible and second camera, shine when the testee surface through 90 degrees annular light source 32, the most reflection of light in testee surface does not get into the camera, the background that makes the camera shoot back is black, there is pit, the reflection of light entering camera of defect parts such as mar in testee surface, make the picture after the shooting be highlight look, judge whether defect appears in the bolt of defeated oil pipe from this, and the area source makes light evenly shine on defeated oil pipe.

Specifically, still be equipped with the protective glass on first detection mouth and the second detection mouth to improve the detection efficiency of first detection component and second detection component. Therefore, the first camera and the second camera are prevented from being influenced by the external environment, the shooting effect of the first camera and the shooting effect of the second camera are guaranteed, and the quality of pictures is guaranteed.

It can be understood that: the resin lens has the advantages of strong impact resistance, good light transmission, low cost and the like, so the resin lens can be selected for the protective glasses.

Specifically, the detection device further includes a first telecentric lens disposed in the first protection barrel 31 and located between the first camera and the first detection port, and a second telecentric lens disposed in the second protection barrel 41 and located between the second camera and the second detection port. Because the telecentric lens can be in a certain object distance range, the obtained image magnification ratio can not change along with the change of the object distance, and the situation of big and small distances can not be generated, therefore, the arrangement of the first telecentric lens and the second telecentric lens can improve the shooting definition and the shooting efficiency of the first camera and the second camera.

Specifically, the first camera and the first camera are each a ccd industrial camera. Because the ccd industrial camera has the advantages of high shooting speed, high frame rate and the like, the detection effect of the detection device can be ensured by selecting the ccd industrial camera.

Specifically, detection device still includes automatically controlled subassembly 5, and automatically controlled subassembly 5 includes industrial computer and PLC module, and industrial computer and PLC module link to each other, and each of first camera and second camera all links to each other with automatically controlled subassembly 5. Therefore, pictures acquired by the first camera and the second camera can be transmitted to the electric control assembly 5, the electric control assembly 5 receives the photographed images of the first camera and the second camera and performs image display and image analysis on the pictures, and therefore measurement of the total height, the thread length, the thread major diameter, the thread minor diameter, the thread pitch and the thread form half angle of the bolt joint, measurement of the end diameter and defect detection are achieved.

Specifically, each of the transport assembly 2, the first camera and the second camera is connected to the electronic control assembly 5. Therefore, the first camera, the 90-degree annular light source 32, the second camera and the surface-shaped light source 42 are controlled to be turned on or off through the running speed or the running rhythm of the conveying assembly 2, and the automation degree of the detection device is improved.

Specifically, the detection device further comprises a photoelectric sensor, and the photoelectric sensor is arranged on the support 1 and connected with the electric control assembly 5. Specifically, photoelectric sensor establishes on two montants 11 of support 1, and when defeated oil pipe passed support 1 below, photoelectric sensor will send signal for control assembly, and control assembly will control two first collection subassemblies 3 and two second collection subassemblies 4 and carry out information acquisition.

Specifically, detection device still includes adsorption component (not shown in the figure), and adsorption component links to each other with automatically controlled subassembly 5, and establishes on support 1, and adsorption component includes electro-magnet and telescopic link. When the industrial personal computer detects that the bolt joint and the end head are unqualified, an alarm instruction is sent to the PLC module, and the PLC module can control the corresponding device to grab the unqualified oil pipe to be detected to an unqualified area.

It will be appreciated that the suction assembly may also be a robot, whereby the defective oil delivery pipe is gripped by the robot.

The utility model discloses detection device working process as follows:

(1) an operator places the oil pipeline to be tested in the groove 221 of the positioning plate 22 of the conveying unit, the conveying assembly 2 is started to convey the oil pipeline, and when the conveying assembly 2 reaches a station to be tested (below the support 1), the photoelectric sensor transmits an electric signal to the electric control assembly 5.

(2) The PLC module of the electric control assembly 5 receives a signal that the oil pipeline to be detected reaches a detected station, and controls the first camera and the second camera to be started, so that the first camera and the second camera capture images, and the images captured by the first camera and the second camera are transmitted to the industrial personal computer.

(3) The electronic control component 5 processes and analyzes the image, so that the measurement of parameters such as the total height, the thread length, the thread major diameter, the thread pitch diameter, the thread minor diameter, the thread pitch, the thread form half angle and the like of the bolt joint is realized, the diameter and the defect of the end head are detected, whether the detected piece is qualified or not is judged by comparing the detection parameters with the parameters of the standard piece, and meanwhile, all the parameters of the detected piece are stored in an EXCEL database.

(4) When the tested piece is unqualified, the electric control component 5 sends an alarm instruction to the PLC module, the PLC module controls the adsorption device to grab the unqualified tested oil pipe to the unqualified area, and the qualified piece is conveyed to the qualified area by the conveying component 2.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. The utility model provides a bolted joint and end automatic checkout device based on machine vision which characterized in that includes:

the support comprises two vertical rods and a cross rod, and the two vertical rods are respectively arranged at two ends of the cross rod to enable the support to be in an inverted U shape;

the conveying assembly is arranged below the bracket;

the two first acquisition assemblies are arranged above the cross rod of the support and are arranged at intervals along the length direction of the support, and the acquisition ends of the first acquisition assemblies are opposite to the conveying assembly so as to acquire information of the bolt joint;

the two second acquisition assemblies are arranged on the bracket, the two second acquisition assemblies are respectively arranged on the two vertical rods, and the detection ends of the two second acquisition assemblies are oppositely arranged so as to acquire information of the bolt end;

and each of the two first acquisition assemblies and the two second acquisition assemblies is connected with the electric control assembly so as to compare and analyze the information acquired by the first acquisition assemblies and the second acquisition assemblies.

2. The machine-vision-based bolted joint and end socket automated inspection device of claim 1, characterized in that said conveyor assembly comprises:

a conveyor belt; and

and the positioning plates are fixed on the conveying belt and are arranged at intervals along the running direction of the conveying belt.

3. The automated machine vision-based stud and end socket inspection device of claim 2, wherein a groove extending along the length of the locating plate is provided above the locating plate to allow a conduit to be placed in the groove.

4. The machine-vision-based bolted joint and end socket automated inspection device of claim 1, wherein said first collection assembly comprises:

a first protection tube fixed on the bracket, the first protection tube having a first detection port,

the first camera is arranged in the protective cylinder, a shooting lens of the first camera is opposite to the first detection port,

the 90-degree annular light source is arranged on the first detection port;

the second acquisition assembly comprises: a second protection cylinder fixed on the bracket and provided with a second detection port,

the second camera is arranged in the protective cylinder, a shooting lens of the second camera is opposite to the second detection port,

the surface-shaped light source is arranged below the first acquisition assembly and is opposite to the second detection port.

5. The machine vision-based automatic bolt joint and end socket detection device as claimed in claim 4, wherein protective glasses are further arranged on the first detection port and the second detection port.

6. The machine-vision-based bolted joint and end socket automated inspection device of claim 4, further comprising a first telecentric lens disposed within said first protective cylinder and between said first camera and said first inspection port;

and the second telecentric lens is arranged in the second protection barrel and is positioned between the second camera and the second detection port.

7. The machine-vision-based bolted joint and end socket automated inspection device of claim 4, wherein each of said first camera and said first camera is a ccd industrial camera.

8. The machine-vision-based bolted joint and end socket automated inspection device of claim 4, wherein each of said transport assembly, said first camera, and said second camera is connected to said electronic control assembly.

9. The machine-vision-based bolt joint and end socket automated inspection device of any one of claims 1-8, further comprising a photoelectric sensor disposed on the bracket and connected to the electronic control assembly.

10. The machine vision-based bolt joint and end socket automatic detection device according to any one of claims 1-8, further comprising an adsorption component, wherein the adsorption component is connected with the electric control component and is arranged on the bracket.

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