CN215695992U

CN215695992U - Part measuring device based on PLC and machine vision

Info

Publication number: CN215695992U
Application number: CN202122030276.2U
Authority: CN
Inventors: 刘团结; 胡艳丽; 殷杰; 刘辉; 徐国力; 简凡; 张谦; 钱江; 张坤
Original assignee: Huainan Normal University
Current assignee: Huainan Normal University
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-02-01
Anticipated expiration: 2031-08-26

Abstract

The utility model discloses a part measuring device based on a PLC and machine vision. The utility model is based on PLC control and machine vision detection, an industrial camera is utilized to identify and screen parts to be detected which are conveyed to a rotating carrying plate, unqualified parts which are identified and screened are shifted into a first recovery barrel through an eliminating shifting sheet, qualified parts are shifted into a second recovery barrel through a guiding shifting sheet, the whole screening process is very convenient, the efficiency and the accuracy of screening the parts are improved, the physical strength of workers is saved, the utility model has practicability, and meanwhile, the parts can be prevented from being damaged in the process of eliminating the parts because the eliminating shifting sheet is arc-shaped and is provided with a rubber pad.

Description

Part measuring device based on PLC and machine vision

Technical Field

The utility model relates to the technical field of part screening, in particular to a part measuring device based on a PLC and machine vision.

Background

In the field of industrial production and processing, defective products often appear on parts produced in batches, and at the moment, the parts need to be strictly checked and screened so as to ensure normal processing of the next procedure or produce qualified products. Generally, when parts are screened and detected, most parts are manually selected and sampled and detected, so that the efficiency of screening qualified parts is low, a large amount of physical power of workers can be consumed, the workers are easy to mistakenly detect sometimes to cause unqualified products to flow in, and the efficiency and the reliability of assembly are finally influenced. Therefore, a measuring device capable of improving the efficiency and the accuracy of detecting and screening parts and saving labor and human body force is needed at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a part measuring device based on PLC and machine vision, so as to solve the problems of the background technology.

The technical scheme of the utility model is as follows:

a part measuring device based on PLC and machine vision comprises a supporting table, a supporting frame, an object carrying disc, a driving mechanism, a conveying mechanism, a detection element, an eliminating mechanism and a controller; the support frame is arranged at the top of the support platform; the object carrying disc is arranged on one side, close to the support frame, above the support table; the driving mechanism is arranged on the supporting table, and the output end of the driving mechanism is connected with the object carrying disc and used for driving the object carrying disc to rotate; the conveying mechanism is arranged on one side of the top of the supporting platform, which is far away from the supporting frame, and is used for conveying the part to be measured to the object carrying disc; the detection element is arranged at the bottom of the mounting plate and is positioned above the object carrying disc, the top of the mounting plate is fixed with the inner top surface of the support frame through a telescopic rod, and the detection element is used for measuring and screening parts; the removing mechanism is arranged on the supporting table and used for removing unqualified parts at the screening position of the industrial camera; the controller is connected with the working power supply, and the driving mechanism, the conveying mechanism, the detection element and the rejecting mechanism are respectively and electrically connected with the controller.

Furthermore, actuating mechanism is including setting up the first motor in the backup pad, the backup pad is fixed in the below of propping up a supporting bench, and the output shaft of first motor is vertical upwards to be connected with the pivot, the other end of pivot pass after propping up a supporting bench with the interior top surface of support frame rotates and is connected, carry thing dish suit to be fixed the pivot is located the axle section of propping up a supporting bench top.

Further, the removing mechanism comprises a second motor and a removing shifting piece; the second motor is fixed at the top of the support table and positioned on the outer side of the object carrying disc, an output shaft of the second motor is arranged vertically upwards, and the second motor is electrically connected with the controller; the rejecting shifting piece is horizontally sleeved and fixed on an output shaft of the second motor.

Furthermore, the removing shifting sheet is S-shaped.

Furthermore, the outer wall of the rejecting shifting piece is provided with a rubber pad.

Further, the conveying mechanism is a conveyor belt conveyor, and the conveyor belt conveyor is electrically connected with the controller.

Furthermore, the device also comprises a first recycling bin and a second recycling bin; the first recovery barrel is arranged on one side, close to the rejection shifting piece, of the top of the supporting table, a first recovery groove is formed in the side wall of a barrel opening of the first recovery barrel, and the first recovery groove is used for guiding unqualified parts screened by the rejection shifting piece into the first recovery barrel; the second recycling bin sets up the one side that is close to conveying mechanism at a supporting bench top, is equipped with the second accumulator on the bung hole lateral wall of second recycling bin, the second accumulator is used for leading-in the second recycling bin with the qualified part of screening, and the top of second accumulator is equipped with water conservancy diversion mechanism, water conservancy diversion mechanism is used for leading-in the second accumulator with the qualified part of screening from carrying the thing dish.

Furthermore, the flow guide mechanism comprises a first connecting block, a second connecting block, a third connecting block and a guide shifting piece; the first connecting block is horizontally fixed on the side wall of the support frame, the top of the first connecting block is provided with a sliding groove, a sliding block is connected in the sliding groove in a sliding mode, a slot opening is formed in the side wall of the first connecting block, and the slot opening is communicated with the sliding groove; the second connecting block is L-shaped, and the flat end of the second connecting block extends into the slot and is fixedly connected with the sliding block; the third connecting block is fixed at the bottom of the vertical section of the second connecting block; the guide shifting piece is hinged with the bottom of the third connecting block.

Furthermore, the telescopic rod comprises a first rod body, a second rod body and a positioning bolt; the first rod body is fixed on the inner top surface of the support frame, and the inner part of the first rod body is of a hollow structure; the second rod body is slidably sleeved inside the first rod body, the bottom of the second rod body is fixed with the top of the mounting plate, and a plurality of positioning holes are formed in the side wall of the second rod body; the positioning bolt is horizontally arranged on the outer wall of the first rod body and is in threaded connection with the first rod body, and the diameter of the positioning bolt is smaller than that of the positioning hole.

Furthermore, the detection element is an industrial camera, an annular backlight source is arranged below the object carrying disc, and the annular backlight source is arranged right opposite to the industrial camera.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model is based on PLC control and machine vision detection, an industrial camera is utilized to identify and screen parts to be detected which are conveyed to a rotating carrying plate, unqualified parts which are identified and screened are shifted into a first recovery barrel through an eliminating shifting sheet, qualified parts are shifted into a second recovery barrel through a guiding shifting sheet, the whole screening process is very convenient, the efficiency and the accuracy of screening the parts are improved, the physical strength of workers is saved, the utility model has practicability, and meanwhile, the parts can be prevented from being damaged in the process of eliminating the parts because the eliminating shifting sheet is arc-shaped and is provided with a rubber pad.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the rejection mechanism of the present invention;

fig. 3 is a schematic structural view of the flow guide mechanism of the present invention.

Fig. 4 is a schematic structural view of the telescopic rod of the present invention.

Detailed Description

The following detailed description of the utility model refers to the accompanying drawings 1-4. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

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 one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Examples

As shown in fig. 1 to 4, an embodiment of the present invention provides a part measuring device based on PLC and machine vision, including a supporting table 1, a supporting frame 2, a carrying tray 32, a driving mechanism, a conveying mechanism 7, a detecting element 52, a rejecting mechanism, and a controller; the support frame 2 is arranged at the top of the support table 1; the object carrying disc 32 is arranged on one side, close to the support frame 2, above the support table 1; the driving mechanism is arranged on the supporting table 1, and the output end of the driving mechanism is connected with the object carrying disc 32 and is used for driving the object carrying disc 32 to rotate; the conveying mechanism 7 is arranged on one side of the top of the support platform 1 far away from the support frame 2 and is used for conveying the part to be measured to the object carrying disc 32; the detection element 52 is arranged at the bottom of the mounting plate 51 and is positioned above the object carrying disc 32, the top of the mounting plate 51 is fixed with the inner top surface of the support frame 2 through the telescopic rod 4, and the detection element 52 is used for measuring screened parts; the removing mechanism is arranged on the supporting table and used for removing unqualified parts at the screening position of the industrial camera; the controller is connected with a working power supply, and the driving mechanism, the conveying mechanism 7, the detection element 52 and the rejecting mechanism are respectively and electrically connected with the controller.

Wherein the controller is for adopting siemens PLC controller to carry out electrical control, and it is more convenient to use, and the operation is simpler, and complexity in the wiring process that can effectual reduction is also more convenient in the aspect of later stage equipment maintenance. The software communication of the system adopts Ethernet communication, can directly control the operation data of the PLC, further indirectly control the bottom layer circuit and the operation mechanism of the system, and realize electrical control systematization, software and intellectualization.

Wherein, conveying mechanism 7 is the conveyer belt conveyer, conveyer belt conveyer is connected with the controller electricity.

The detection element 52 is an industrial camera, an annular backlight source 53 is arranged below the object carrying disc 32, the annular backlight source 53 is arranged right opposite to the industrial camera, the detection of the industrial camera on parts is based on machine vision detection, the technology is used as a disclosed technical means, and the detection principle is as follows: firstly, a CCD camera is adopted to convert a shot target into an image signal, the image signal is transmitted to a special image processing system, the image signal is converted into a digital signal according to information such as pixel distribution, brightness, color and the like, and the image system performs various operations on the signals to extract the characteristics of the target, such as: area, length, number, location, etc., and then output the results according to preset tolerances and other conditions, such as: size, angle, offset, number, qualified or unqualified and the like, thereby greatly improving the working efficiency and the quality of products.

When detecting the part, drive earlier through actuating mechanism and carry the thing dish and rotate, then will wait to detect the part and become the transport of batch through the conveyer belt conveyer and carry the thing dish 32 on, the part that waits to detect the part follows and carries thing dish 32 and rotate, when removing under the industrial camera, detects whether qualified according to the value that machine vision detection was preset, and unqualified part is rejected through rejecting the mechanism.

Specifically, as shown in fig. 1, the driving mechanism includes a first motor 3 disposed on a support plate 11, the support plate 11 is fixed below the support table 1, an output shaft of the first motor 3 is vertically and upwardly connected with a rotating shaft 31, the other end of the rotating shaft 31 penetrates through the support table 1 and then is rotatably connected with the inner top surface of the support frame 2, and the object carrying tray 32 is fixed on a shaft section of the rotating shaft 31 above the support table 1 in a sleeved manner.

Wherein in the aspect of equipment conveyer belt drive, because need not big moment of torsion, but need consider the speed cooperation of conveyer belt and year thing dish, so with first motor 3 adoption ordinary small-size step motor, can accurate control conveyer belt speed, avoid causing the part to pile up and the part measures compact problem inadequately. In addition, the stepping motor is small in size and easy to install, the space area of equipment is saved, the stepping motor is convenient to control and simple to operate, a power supply only needs 24V driving voltage, and the stepping motor has great operability in the aspects of installation and debugging.

Specifically, as shown in fig. 1 and 2, the rejecting mechanism includes a second motor 61 and a rejecting paddle 62; the second motor 61 is fixed on the top of the support table 1 and positioned on the outer side of the object carrying disc 32, an output shaft of the second motor 61 is arranged vertically upwards, and the second motor 61 is electrically connected with the controller; the removing poking sheet 62 is horizontally sleeved and fixed on the output shaft of the second motor 61.

When screening the part, when the industrial camera detects unqualified part, signals are sent to the controller, the controller receives the signals and controls the second motor 61 to drive the rejection plectrum 62 to rotate, the rejection plectrum 62 can reject unqualified part from the carrying disc 32 when rotating, and after the unqualified part is rejected, the controller controls the second motor 61 to stop rotating, so that the qualified part is kept in the carrying disc 32 to wait for subsequent processing.

Preferably, as shown in fig. 2, in order to avoid the damage of the part caused by the picking dial 62 during the picking process, the picking dial 62 is configured in an S-shape, and both ends thereof are kept in an arc shape.

Preferably, as shown in fig. 2, in order to further avoid the picking-up pick 62 from scratching the part during the process of picking up the part, a rubber pad is disposed on the outer wall of the picking-up pick 62.

Preferably, as shown in fig. 1, in order to recover the qualified or unqualified parts, a first recovery tank 81 and a second recovery tank 83 are further included; the first recovery barrel 81 is arranged on one side, close to the removing poking piece 62, of the top of the support table 1, a first recovery groove 82 is formed in the side wall of a barrel opening of the first recovery barrel 81, and the first recovery groove 82 is used for guiding unqualified parts screened by the removing poking piece 62 into the first recovery barrel 81; the second recycling bin 83 is arranged on one side, close to the conveying mechanism 7, of the top of the supporting table 1, a second recycling groove 84 is formed in the side wall of a bin mouth of the second recycling bin, the second recycling groove 84 is used for guiding screened qualified parts into the second recycling bin 83, a flow guide mechanism 9 is arranged above the second recycling groove 84, and the flow guide mechanism 9 is used for guiding the screened qualified parts into the second recycling groove 84 from the loading tray 32.

Specifically, as shown in fig. 1 and 3, the flow guide mechanism 9 includes a first connecting block 91, a second connecting block 92, a third connecting block 93, and a guide pick 94; the first connecting block 91 is horizontally fixed on the side wall of the support frame 2, the top of the first connecting block 91 is provided with a sliding groove, a sliding block is connected in the sliding groove in a sliding manner, the side wall of the first connecting block 91 is provided with a slot opening, and the slot opening is communicated with the sliding groove; the second connecting block 92 is L-shaped, and the flat end of the second connecting block 92 extends into the slot and is fixedly connected with the sliding block; a third connecting block 93 is fixed at the bottom of the vertical section of the second connecting block 92; the guide pick 94 is hinged to the bottom of the third connecting block 93. Through the arrangement, the guide shifting piece 94 can horizontally move below the first connecting block 91 under the matching of the sliding block and the sliding groove, the fixed position of the guide shifting piece is convenient to adjust, the guide shifting piece 94 is hinged with the bottom of the third connecting block 93, the angle of the guide shifting piece 94 can be adjusted, and the guide shifting piece 94 is convenient to guide qualified parts into the second recovery groove 84 and the second recovery barrel 83 better.

Specifically, as shown in fig. 1 and 4, the telescopic rod 4 includes a first rod 41, a second rod 42 and a positioning bolt 44; the first rod body 41 is fixed on the inner top surface of the support frame 2, and the inside of the first rod body 41 is of a hollow structure; the second rod body 42 is slidably sleeved inside the first rod body 41, the bottom of the second rod body 42 is fixed with the top of the mounting plate 51, and a plurality of positioning holes 43 are formed in the side wall of the second rod body 42; the positioning bolt 44 is horizontally arranged on the outer wall of the first rod 41 and is in threaded connection with the first rod 41, and the diameter of the positioning bolt 44 is smaller than that of the positioning hole 43. Through the arrangement, the positioning bolt 44 can be inserted into the positioning holes 43 with different heights to adjust the extending length of the second rod body 42 from the first rod body 41, so that the detection height of the detection element 52 can be adjusted, and the detection element 52 can detect more accurately during detection.

Although the preferred embodiments of the present invention have been disclosed, the embodiments of the present invention are not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. The utility model provides a part measuring device based on PLC and machine vision, is including setting up support frame (2) at a supporting bench (1) top, its characterized in that still includes:

the object carrying disc (32) is arranged on one side, close to the support frame (2), above the support table (1);

the driving mechanism is arranged on the supporting table (1), and the output end of the driving mechanism is connected with the object carrying disc (32) and used for driving the object carrying disc (32) to rotate;

the conveying mechanism (7) is arranged on one side, far away from the supporting frame (2), of the top of the supporting table (1) and is used for conveying the parts to be measured to the object carrying disc (32);

the detection element (52) is arranged at the bottom of the mounting plate (51) and is positioned above the object carrying disc (32), the top of the mounting plate (51) is fixed with the inner top surface of the support frame (2) through a telescopic rod (4), and the detection element (52) is used for measuring and screening parts;

the removing mechanism is arranged on the supporting table and used for removing unqualified parts at the screening position of the industrial camera;

and the controller is connected with a working power supply, and the driving mechanism, the conveying mechanism (7), the detection element (52) and the rejecting mechanism are respectively and electrically connected with the controller.

2. The part measuring device based on the PLC and the machine vision is characterized in that the driving mechanism comprises a first motor (3) arranged on a supporting plate (11), the supporting plate (11) is fixed below the supporting table (1), an output shaft of the first motor (3) is vertically and upwardly connected with a rotating shaft (31), the other end of the rotating shaft (31) penetrates through the supporting table (1) and then is rotatably connected with the inner top surface of the supporting frame (2), and the object carrying disc (32) is sleeved and fixed on a shaft section of the rotating shaft (31) above the supporting table (1).

3. The PLC and machine vision based part measuring device of claim 1, wherein the rejection mechanism comprises:

the second motor (61) is fixed to the top of the support table (1) and located on the outer side of the object carrying disc (32), an output shaft of the second motor (61) is arranged vertically upwards, and the second motor (61) is electrically connected with the controller;

and the removing shifting sheet (62) is horizontally sleeved and fixed on an output shaft of the second motor (61).

4. The PLC and machine vision based part measuring device as claimed in claim 3, wherein the rejecting paddle (62) is S-shaped.

5. The PLC and machine vision based part measuring device as claimed in claim 4, wherein the outer wall of the removing poking sheet (62) is provided with a rubber pad.

6. The PLC and machine vision based part measuring device as claimed in claim 1, wherein the conveying mechanism (7) is a belt conveyor, and the belt conveyor is electrically connected with the controller.

7. The PLC and machine vision based part measuring device of claim 3, further comprising:

the first recovery barrel (81) is arranged on one side, close to the rejecting shifting piece (62), of the top of the supporting table (1), a first recovery groove (82) is formed in the side wall of a barrel opening of the first recovery barrel (81), and the first recovery groove (82) is used for guiding unqualified parts screened by the rejecting shifting piece (62) into the first recovery barrel (81);

the second recycling bin (83) is arranged on one side, close to the conveying mechanism (7), of the top of the supporting table (1), a second recycling groove (84) is formed in the side wall of a bin opening of the second recycling bin, the second recycling groove (84) is used for guiding screened qualified parts into the second recycling bin (83), a flow guide mechanism (9) is arranged above the second recycling groove (84), and the flow guide mechanism (9) is used for guiding screened qualified parts into the second recycling groove (84) from the object carrying tray (32).

8. The PLC and machine vision based part measuring device of claim 7, wherein the flow guide mechanism (9) comprises:

the first connecting block (91) is horizontally fixed on the side wall of the support frame (2), a sliding groove is formed in the top of the first connecting block (91), a sliding block is connected in the sliding groove in a sliding mode, a slot opening is formed in the side wall of the first connecting block (91), and the slot opening is communicated with the sliding groove;

the second connecting block (92) is L-shaped, and the flat end of the second connecting block (92) extends into the slot and is fixedly connected with the sliding block;

a third connecting block (93) fixed to the bottom of the vertical section of the second connecting block (92);

and the guide shifting sheet (94) is hinged with the bottom of the third connecting block (93).

9. The PLC and machine vision based part measuring device according to claim 1, wherein the telescopic rod (4) comprises:

the first rod body (41) is fixed on the inner top surface of the support frame (2), and the interior of the first rod body (41) is of a hollow structure;

the second rod body (42) is sleeved inside the first rod body (41) in a sliding mode, the bottom of the second rod body (42) is fixed to the top of the mounting plate (51), and a plurality of positioning holes (43) are formed in the side wall of the second rod body (42);

and the positioning bolt (44) is horizontally arranged on the outer wall of the first rod body (41) and is in threaded connection with the first rod body (41), and the diameter of the positioning bolt (44) is smaller than that of the positioning hole (43).

10. The PLC and machine vision based part measuring device as claimed in claim 1, wherein the detection element (52) is an industrial camera, an annular backlight source (53) is arranged below the object carrying disc (32), and the annular backlight source (53) is arranged opposite to the industrial camera.