CN112229850A - Positioning rotating mechanism, cylinder image acquisition device and image visual detection system - Google Patents
Positioning rotating mechanism, cylinder image acquisition device and image visual detection system Download PDFInfo
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- CN112229850A CN112229850A CN202010927975.4A CN202010927975A CN112229850A CN 112229850 A CN112229850 A CN 112229850A CN 202010927975 A CN202010927975 A CN 202010927975A CN 112229850 A CN112229850 A CN 112229850A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N2021/0339—Holders for solids, powders
Abstract
The invention relates to a positioning and rotating mechanism, a cylindrical image acquisition device and an image visual detection system. The first driver is started, the mounting seat or the mounting shell is driven to move, the roller assemblies and the supporting wheels are close to each other, and stable clamping of the product between the two roller assemblies and the two supporting wheels is guaranteed. As the driving of the first driver is continued, the holding force of the product between the roller wheel assembly and the supporting wheel is increased. The roller assemblies can be elastically compressed on the mounting seat, so that the roller assemblies are elastically abutted with the outer peripheral surfaces of the products in the process of gradually holding the products tightly, the clamping force on the products is effectively controlled, and the products are prevented from being damaged due to overlarge clamping force on the premise of ensuring stable clamping; meanwhile, the product is ensured not to generate transverse displacement in the rotating process.
Description
Technical Field
The invention relates to the technical field of automatic detection, in particular to a positioning and rotating mechanism, a cylinder image acquisition device and an image visual detection system.
Background
The quality of the product needs to be controlled at the tail end on an industrial product production line for mass production, a large part of the product inspection needs to be judged through appearance patterns, the patterns are screened through visual inspection in the prior art, but a large number of tiny fatal defects are difficult to observe by naked eyes, and visual fatigue easily occurs under a long-time high-strength working condition, so that a large number of defective products are missed to be inspected.
In order to improve the detection efficiency and the detection quality, an industrial vision automatic detection technology is generally adopted, and the appearance pattern of a product is collected firstly; then comparing the collected two-dimensional picture with a sample; and finally, judging. When the appearance image of the cylindrical product is collected, the cylindrical product needs to be clamped and positioned, and then the cylindrical product is rotated, so that the cylindrical product rotates stably at a constant speed, and the industrial camera can stably acquire the image information of the outer peripheral surface and the two end surfaces of the cylindrical product.
However, when the product rotates, the clamping force of the traditional positioning device cannot be accurately controlled, so that the product is not enough in the rotating process or too large in the clamping force. When the clamping force of the positioning device is insufficient, the product is easy to generate transverse displacement or slip, so that the product cannot keep constant-speed stable rotation; when the clamping force of the gear positioning device is too large, the product is easily damaged, so that the image information of the outer peripheral surface and the two end surfaces of the product cannot be accurately acquired.
Disclosure of Invention
Based on this, it is necessary to provide a positioning rotation mechanism, a cylinder image acquisition device and an image visual inspection system, so as to effectively control the clamping force on the product, so that the product is stably clamped, and the appearance image of the product is conveniently and stably acquired.
A positioning and rotating mechanism, comprising: mounting a shell; the supporting assembly comprises two supporting wheels, and the two supporting wheels are arranged in the mounting shell at intervals; the positioning structure comprises a mounting seat and two roller assemblies arranged on the mounting seat at intervals, the roller assemblies and the supporting wheels are respectively used for abutting against the outer peripheral surface of a product and clamping the product, and the roller assemblies can be elastically compressed on the mounting seat; the first driver is in transmission connection with the mounting seat and/or the mounting shell and is used for driving the supporting wheels and the roller assemblies to move close to or away from each other; and the second driver is in transmission connection with the supporting wheel and is used for driving the supporting wheel to rotate.
In the image acquisition process, the positioning and rotating mechanism has the advantages that the two roller assemblies are arranged at intervals, so that the peripheral surface of a product can be stably supported on the two roller assemblies. The first driver is started, the mounting seat or the mounting shell is driven to move, the roller assemblies and the supporting wheels are close to each other, and stable clamping of the product between the two roller assemblies and the two supporting wheels is guaranteed. As the driving of the first driver is continued, the holding force of the product between the roller wheel assembly and the supporting wheel is increased. The roller assemblies can be elastically compressed on the mounting seat, so that the roller assemblies can also be elastically compressed towards the mounting seat in the process of gradually holding the product tightly, the outer peripheral surfaces of the roller assemblies and the product are elastically abutted, the clamping force on the product is effectively controlled, and the product is prevented from being damaged due to overlarge clamping force on the premise of ensuring stable clamping of the product; meanwhile, the product is ensured not to generate transverse displacement in the rotating process. Finally, start the second driver, order about the supporting wheel and rotate for the product is stable, at the uniform velocity rotate, guarantees that the appearance image of product is by stable collection, if: an image of the outer peripheral surface of the product, an image of the end face of the product, and the like.
In one embodiment, the positioning structure further comprises an elastic member, the roller assembly is movably mounted on the mounting seat, and the elastic member is supported between the roller assembly and the mounting seat.
In one embodiment, the mounting seat is provided with a mounting groove, two opposite side walls of the mounting groove are provided with movable holes, the roller assembly is mounted in the mounting groove, two ends of the roller assembly penetrate into the movable holes respectively, and the elastic element is arranged between the roller assembly and the mounting seat.
In one embodiment, the elastic member is a torsion spring, the torsion spring is mounted on the mounting seat, one end of the torsion spring is connected to the mounting seat, and the roller assembly is supported at the other end of the torsion spring.
In one embodiment, the roller assembly comprises a support shaft and a positioning wheel sleeved on the support shaft, two ends of the support shaft respectively penetrate into the movable holes, the elastic member is arranged between the support shaft and the mounting seat, and the positioning wheel is located in the mounting groove.
In one embodiment, the roller assembly further comprises shaft end covers, the shaft end covers are respectively sleeved at two opposite ends of the supporting shaft, the shaft end covers penetrate into the movable holes, and the elastic component is arranged between the end covers and the mounting seat.
In one embodiment, the number of the supporting components and the number of the positioning structures are at least two, at least two supporting components are arranged in the mounting shell at intervals, and the positioning structures and the supporting components are arranged in a one-to-one correspondence manner.
In one embodiment, the center-to-center distances D of two adjacent positioning structures1The center distance D between two adjacent supporting components2Both being larger than the center-to-center distance D of two products abutting against each other3。
A positioning and rotating mechanism, comprising: mounting a shell; the supporting assembly comprises two supporting wheels, the two supporting wheels are arranged in the mounting shell at intervals, and the supporting wheels can be elastically compressed in the mounting shell; the positioning structure comprises a mounting seat and two roller assemblies arranged on the mounting seat at intervals, and the roller assemblies and the supporting wheels are respectively used for abutting against the outer peripheral surface of a product and clamping the product; the first driver is in transmission connection with the mounting seat and/or the mounting shell and is used for driving the supporting wheels and the roller assemblies to move close to or away from each other; and the second driver is in transmission connection with the roller assembly and is used for driving the roller assembly to rotate.
In the image acquisition process, the positioning and rotating mechanism has the advantages that the two roller assemblies are arranged at intervals, so that the peripheral surface of a product can be stably supported on the two roller assemblies. The first driver is started, the mounting seat or the mounting shell is driven to move, the roller assemblies and the supporting wheels are close to each other, and stable clamping of the product between the two roller assemblies and the two supporting wheels is guaranteed. As the driving of the first driver is continued, the holding force of the product between the roller wheel assembly and the supporting wheel is increased. The supporting wheels can be elastically compressed on the mounting shell, so that the supporting wheels can be elastically compressed towards the mounting shell in the gradual holding process of the product, the supporting wheels are elastically abutted against the outer peripheral surface of the product, the clamping force on the product is effectively controlled, and the product is prevented from being damaged due to overlarge clamping force on the premise of ensuring stable clamping of the product; meanwhile, the product is ensured not to generate transverse displacement in the rotating process. And finally, starting a second driver to drive the roller assembly to rotate, so that the product is stable and rotates at a constant speed, and the appearance image of the product is ensured to be stably acquired, if: an image of the outer peripheral surface of the product, an image of the end face of the product, and the like.
The utility model provides a cylinder image acquisition device, includes first collector, second collector and above arbitrary one location slewing mechanism, first collector is installed on the installation shell, first collector is used for right the outer peripheral face of product carries out image acquisition, the second collector is located one side of installation shell, the second collector is used for right image acquisition is carried out to the terminal surface of product.
The cylinder image acquisition device adopts the positioning and rotating mechanism, and in the image acquisition process, because the two roller assemblies are arranged at intervals, the peripheral surface of a product can be stably supported on the two roller assemblies. The first driver is started, the mounting seat or the mounting shell is driven to move, the roller assemblies and the supporting wheels are close to each other, and stable clamping of the product between the two roller assemblies and the two supporting wheels is guaranteed. As the driving of the first driver is continued, the holding force of the product between the roller wheel assembly and the supporting wheel is increased. The roller assemblies or the supporting wheels can be elastically compressed, so that the roller assemblies or the supporting wheels are elastically abutted with the outer peripheral surface of the product in the process of gradually holding the product tightly, the clamping force on the product is effectively controlled, and the product is prevented from being damaged due to overlarge clamping force on the premise of ensuring stable clamping of the product; meanwhile, the product is ensured not to generate transverse displacement in the rotating process. Finally, start the second driver, order about supporting wheel or roller components and rotate for the product is stable, at the uniform velocity rotate, guarantees that the appearance image of product is by stable collection, if: an image of the outer peripheral surface of the product, an image of the end face of the product, and the like.
The utility model provides an image visual inspection system, includes frame, conveying platform and above cylinder image acquisition device, the conveying platform is installed in the frame, cylinder image acquisition device installs on the conveying platform, the conveying platform be used for with the product conveying with location structure corresponds the position on to the product output after will gathering.
The image visual detection system adopts the positioning rotating mechanism, and in the image acquisition process, the product is conveyed to the position corresponding to the positioning structure through the conveying platform; the first driver is started, the mounting seat or the mounting shell is driven to move, the roller assemblies and the supporting wheels are close to each other, and stable clamping of the product between the two roller assemblies and the two supporting wheels is guaranteed. As the driving of the first driver is continued, the holding force of the product between the roller wheel assembly and the supporting wheel is increased. The roller assemblies or the supporting wheels can be elastically compressed, so that the roller assemblies or the supporting wheels are elastically abutted with the outer peripheral surface of the product in the process of gradually holding the product tightly, the clamping force on the product is effectively controlled, and the product is prevented from being damaged due to overlarge clamping force on the premise of ensuring stable clamping of the product; meanwhile, the product is ensured not to generate transverse displacement in the rotating process. Finally, start the second driver, order about supporting wheel or roller components and rotate for the product is stable, at the uniform velocity rotate, guarantees that the appearance image of product is by stable collection, if: an image of the outer peripheral surface of the product, an image of the end face of the product, and the like.
In one embodiment, the image visual inspection system further comprises a blocking assembly, the conveying platform is arranged on the rack in an inclined mode, the cylinder image acquisition devices and the blocking assembly are sequentially distributed along the conveying direction of the products, and the blocking assembly is used for blocking the products on the positioning structure.
In one embodiment, the image visual inspection system further comprises a screening structure, wherein the cylinder image acquisition device, the blocking assembly and the screening structure are sequentially distributed along the conveying direction of the products, and the screening structure is used for screening and classifying the products.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a cylindrical image capturing device according to an embodiment;
FIG. 2 is a schematic view of an exemplary positioning structure;
FIG. 3 is an exploded view of a positioning structure according to one embodiment;
FIG. 4 is a schematic view of a positioning and rotating mechanism of an embodiment of a product in a position corresponding to a positioning structure;
FIG. 5 is a schematic view of a positioning and rotating mechanism for holding a product according to one embodiment;
FIG. 6 is a diagram of a visual image inspection system, according to one embodiment.
100. A positioning rotation mechanism; 110. mounting a shell; 120. a support assembly; 121. a support wheel; 130. a positioning structure; 131. a mounting seat; 1311. a base plate; 1312. a side plate; 1313. mounting grooves; 1314. a movable hole; 132. a roller assembly; 1321. a support shaft; 1322. positioning wheels; 1323. a shaft end cover; 1324. a snap ring; 1325. a card slot; 133. an elastic member; 140. a first driver; 150. a second driver; 200. a first collector; 300. a second collector; 400. a transfer platform; 410. a blocking component; 411. a baffle plate; 412. a third driver; 420. a positioning assembly; 421. positioning a plate; 422. a fourth driver; 500. a frame; 600. screening the structure; 610. an algorithm operation module; 620. a classification box; 700. a controller; 800. and (5) producing the product.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In an embodiment, referring to fig. 1, fig. 2 and fig. 4, a positioning rotation mechanism 100, the positioning rotation mechanism 100 includes: the mounting case 110, the support assembly 120, the positioning structure 130, the first driver 140 and the second driver 150. The support assembly 120 includes two support wheels 121, and the two support wheels 121 are spaced apart from each other in the mounting case 110. The positioning structure 130 includes a mounting seat 131 and two roller assemblies 132 spaced apart from the mounting seat 131, and the roller assemblies 132 and the supporting wheels 121 are respectively configured to abut against the outer circumferential surface of the product 800 and clamp the product 800. The roller assembly 132 is resiliently compressible on the mount 131. The first driver 140 is in driving connection with the mounting seat 131 and/or the mounting shell 110, and the first driver 140 is used for driving the supporting wheel 121 and the roller assembly 132 to move toward or away from each other. The second driver 150 is in transmission connection with the supporting wheel 121, and the second driver 150 is used for driving the supporting wheel 121 to rotate.
In the above-mentioned positioning and rotating mechanism 100, during the image capturing process, since the two roller assemblies 132 are arranged at intervals, the outer peripheral surface of the product 800 can be stably supported on the two roller assemblies 132. The first driver 140 is activated to drive the mounting seat 131 or the mounting shell 110 to move, so that the roller assemblies 132 and the supporting wheels 121 are close to each other, and the product 800 is stably clamped between the two roller assemblies 132 and the two supporting wheels 121. As the driving of the first driver 140 continues, the holding force of the product 800 between the roller assembly 132 and the support wheel 121 increases. Because the roller assembly 132 is elastically compressible on the mounting seat 131, the roller assembly 132 is also elastically compressible towards the mounting seat 131 in the process that the product 800 is gradually clasped, so that the roller assembly 132 is elastically abutted against the outer peripheral surface of the product 800, the clamping force on the product 800 is effectively controlled, and the product 800 is prevented from being damaged due to overlarge clamping force on the premise that the product 800 is stably clamped; meanwhile, the product 800 is ensured not to generate lateral displacement in the rotation process. Finally, the second driver 150 is started to drive the supporting wheel 121 to rotate, so that the product 800 is stable and rotates at a uniform speed, and the appearance image of the product 800 is ensured to be stably acquired, for example: an image of the outer peripheral surface of the product 800, an image of the end surface of the product 800, and the like.
It should be noted that the roller assembly 132 is elastically compressible on the mounting seat 131, which is understood as: the greater the pressure of the roller assembly 132 and the supporting wheel 121 on the outer circumferential surface of the product 800, the greater the pressure, the reaction force of the product 800 can be received by the roller assembly 132, so that the roller assembly 132 is elastically compressed on the mounting seat 131, and the elastic and non-rigid collision is caused between the roller assembly 132 and the product 800. Among them, there are various elastic compression ways of the roller assembly 132 on the mounting seat 131, such as: the roller assembly 132 is mounted on the mounting seat 131 through a spring, a torsion spring, elastic rubber, an elastic metal sheet, etc.; further alternatively, the roller assembly 132 may be made of an elastic material at a position on the mounting seat 131, and the mounting seat 131 may be elastically deformed during the process of clamping the product 800.
Alternatively, the first driver 140 may be an air cylinder, a hydraulic cylinder, an electric cylinder, or an electric motor, etc. When the first driver 140 is a motor, a stroke conversion structure is provided between the first driver 140 and the mounting seat 131 or the mounting shell 110, such as: a gear and rack structure or a screw rod and slide block structure and the like. The second driver 150 is a motor, and when the second driver 150 is in transmission connection with the supporting wheel 121, the second driver can adopt structures such as a synchronous belt, a chain and a gear set for transmission.
It should be further noted that the product 800 of this embodiment is a cylinder or an approximate cylinder, and the outer peripheral surface of the product 800 is a cylindrical side surface of the product 800; the end faces of the product 800 are the upper and lower circular end faces of the product 800. Further, the outline image of the product 800 includes an outer peripheral surface image of the product 800 and an end surface image of the product 800.
Further, referring to fig. 1 and fig. 2, the positioning structure 130 further includes an elastic member 133. The roller assembly 132 is movably mounted on the mounting seat 131. The elastic member 133 is supported between the roller assembly 132 and the mount 131. As such, the elastic member 133 is disposed between the roller assembly 132 and the mount 131, so that the roller assembly 132 is elastically supported on the mount 131. When the product 800 is clamped by the first driver 140, the roller assembly 132 is also subjected to the reaction force of the product 800, and the elastic member 133 is compressed, so that the roller assembly 132 is elastically compressed on the mounting seat 131; meanwhile, the clamping force of the roller assembly 132 on the product 800 is also made to be elastic force, so that the product 800 can be stably clamped, and the appearance of the product 800 can be kept complete.
Alternatively, the elastic member 133 is a spring, a torsion spring, elastic rubber, or an elastic metal sheet, etc.
Further, referring to fig. 3, a mounting groove 1313 is disposed on the mounting seat 131. The opposite side walls of the mounting groove 1313 are provided with movable holes 1314. The roller assembly 132 is installed in the installation groove 1313, and both ends of the roller assembly 132 are inserted into the movable holes 1314, respectively, and the elastic member 133 is disposed between the roller assembly 132 and the installation seat 131, so that the roller assembly 132 elastically moves up and down in the movable holes 1314 when being pressed.
Alternatively, the activity hole 1314 may be designed as a large circular hole, an elliptical hole, a kidney-shaped hole, a rectangular hole, or the like.
In one embodiment, referring to fig. 2, the elastic member 133 is a torsion spring. The torsion spring is installed on the installation seat 131, and one end of the torsion spring is connected to the installation seat 131. The roller assembly 132 is supported at the other end of the torsion spring, so that the roller assembly 132 is stably and elastically supported on the mounting seat 131 by the torsion spring.
Further, referring to fig. 3, there are two torsion springs, the two torsion springs are respectively disposed on two opposite side surfaces of the mounting seat 131, one end of the torsion spring is connected to the mounting seat 131, and the other end of the torsion spring supports one end of the roller assembly 132, so that the two ends of the roller assembly 132 are stressed in a balanced manner.
Specifically, referring to fig. 3, the mounting seat 131 includes a bottom plate 1311 and two side plates 1312 spaced apart from each other and disposed on the bottom plate 1311. The side plates 1312 are provided with movable holes 1314, the two side plates 1312 and the bottom plate 1311 enclose a mounting groove 1313, the roller assembly 132 is rotated into the mounting groove 1313, and two ends of the roller assembly penetrate into the movable holes 1314 at two sides respectively. A torsion spring is provided on the side plate 1312, one end of the torsion spring is connected to the bottom plate 1311, and the other end of the torsion spring supports one end of the roller assembly 132.
In one embodiment, referring to fig. 2, the roller assembly 132 includes a supporting shaft 1321 and a positioning wheel 1322 disposed on the supporting shaft 1321. Both ends of the support shaft 1321 are inserted into the movable holes 1314, respectively. The elastic member 133 is disposed between the support shaft 1321 and the mount 131. Positioning wheels 1322 are positioned in the mounting slots 1313. Therefore, when the first driver 140 drives the positioning wheel 1322 and the supporting wheel 121 to tightly hold the product 800, the positioning wheel 1322 reversely presses the supporting shaft 1321, and since the supporting shaft 1321 is mounted on the mounting seat 131 through the elastic member 133, that is, the supporting shaft 1321 is a floating shaft, the abutment between the positioning wheel 1322 and the product 800 is an elastic abutment, so that the clamping force on the product 800 is effectively controlled.
Specifically, the positioning wheel 1322 is of a bearing structure, i.e., the positioning wheel 1322 is rotatable on the support shaft 1321.
Further, referring to fig. 2, the scroll wheel assembly 132 further includes a shaft cover 1323. Opposite ends of the support shaft 1321 are respectively sleeved with shaft end covers 1323. The shaft end cap 1323 passes into the activity bore 1314. The elastic member 133 is disposed between the end cap and the mounting seat 131, and thus both ends of the support shaft 1321 are effectively protected from abrasion by the shaft end cap 1323.
Specifically, referring to fig. 3, a clamping slot 1325 is disposed on the supporting shaft 1321, and one end of the supporting shaft 1321 is sleeved into the shaft end cover 1323 and extends out of the clamping slot 1325. The retaining ring 1324 is fitted over the retaining groove 1325, so that the support shaft 1321 is stably connected to the shaft cover 1323.
In one embodiment, referring to fig. 4, at least two of the supporting component 120 and the positioning structure 130 are provided. At least two support members 120 are spaced apart and mounted within the mounting housing 110. The positioning structures 130 are disposed in one-to-one correspondence with the support members 120. In this embodiment, the number of the supporting components 120 and the positioning structures 130 is correspondingly increased, so as to effectively improve the processing efficiency of the positioning rotating mechanism 100 and ensure the matching with the production speed of the production line.
It should be noted that the rotational driving of at least two supporting assemblies 120 can be performed by the same motor; or can be respectively completed by more than two motors. When the rotation driving of at least two supporting assemblies 120 is performed by the same motor, a plurality of timing belts or chains may be respectively wound around each supporting wheel 121. Meanwhile, the movement of at least two supporting assemblies 120 or at least two positioning structures 130 can also be performed by the same driver, and certainly can also be performed by more than two drivers respectively.
Further, referring to fig. 4, the center distance D between two adjacent positioning structures 1301Center distance D from two adjacent support assemblies 1202Are each larger than two products 800 abutting against each otherDistance between centers D3. Therefore, when more than two products 800 are respectively and correspondingly conveyed to the positioning structure 130, the first driver 140 is activated, so that the roller assemblies 132 and the supporting wheels 121 are close to each other, and the products 800 are stably clamped. Due to the center distance D between two adjacent positioning structures 1301Center distance D from two adjacent support assemblies 1202Both larger than the center-to-center distance D of two abutting products 8003Therefore, when more than two products 800 are respectively and correspondingly conveyed to the positioning structure 130, the two adjacent products 800 are automatically separated, and each product 800 is ensured not to interfere with each other when rotating.
It should be noted that the center-to-center distance D between two abutting products 8003It is to be understood that: the center distance of the two products 800 when the outer peripheral surfaces of the two products 800 contact each other; also understood as the outer diameter of the product 800.
Specifically, referring to fig. 4, the center distance D between two adjacent positioning structures 1301Center distance D from two adjacent support assemblies 1202Center-to-center distance D of two abutting products 80032mm in size.
In one embodiment, referring to fig. 1, the supporting wheel 121 is a rubber roller, and when the first driver 140 drives the roller assembly 132 and the supporting wheel 121 to approach each other, the supporting wheel 121 is extruded to deform to a certain extent, so that the outer circumferential surface of the product 800 keeps a constant distance from the collector, and the collector is convenient to collect an image.
In an embodiment, referring to fig. 1, fig. 2 and fig. 4, a positioning rotation mechanism 100, the positioning rotation mechanism 100 includes: the mounting case 110, the support assembly 120, the positioning structure 130, the first driver 140 and the second driver 150. The support assembly 120 includes two support wheels 121. Two support wheels 121 are spaced apart in the mounting housing 110, the support wheels 121 being resiliently compressible in the mounting housing 110. The positioning structure 130 includes a mounting seat 131 and two roller assemblies 132 spaced apart from the mounting seat 131, and the roller assemblies 132 and the supporting wheels 121 are respectively configured to abut against the outer circumferential surface of the product 800 and clamp the product 800. The first driver 140 is in driving connection with the mounting seat 131 and/or the mounting shell 110, and the first driver 140 is used for driving the supporting wheel 121 and the roller assembly 132 to move toward or away from each other. The second driver 150 is drivingly connected to the roller assembly 132, and the second driver 150 is used for driving the roller assembly 132 to rotate.
In the above-mentioned positioning and rotating mechanism 100, during the image capturing process, since the two roller assemblies 132 are arranged at intervals, the outer peripheral surface of the product 800 can be stably supported on the two roller assemblies 132. The first driver 140 is activated to drive the mounting seat 131 or the mounting shell 110 to move, so that the roller assemblies 132 and the supporting wheels 121 are close to each other, and the product 800 is stably clamped between the two roller assemblies 132 and the two supporting wheels 121. As the driving of the first driver 140 continues, the holding force of the product 800 between the roller assembly 132 and the support wheel 121 increases. Because the supporting wheel 121 is elastically compressible on the mounting shell 110, in the process that the product 800 is gradually clasped, the supporting wheel 121 is elastically compressed towards the mounting shell 110, so that the supporting wheel 121 elastically abuts against the outer peripheral surface of the product 800, the clamping force on the product 800 is effectively controlled, and the product 800 is prevented from being damaged due to overlarge clamping force on the premise that the product 800 is stably clamped; meanwhile, the product 800 is ensured not to generate lateral displacement in the rotation process. Finally, the second driver 150 is started to drive the roller assembly 132 to rotate, so that the product 800 is stably rotated at a uniform speed, and the appearance image of the product 800 is ensured to be stably collected, such as: an image of the outer peripheral surface of the product 800, an image of the end surface of the product 800, and the like.
It should be noted that the present embodiment is different from the above-mentioned embodiments in that: the roller assembly 132 is rigidly mounted, and the supporting wheel 121 is elastically compressed, that is, when the product 800 is clasped, the supporting wheel 121 is elastically compressed in the mounting shell 110, so that the supporting wheel 121 elastically collides with the outer peripheral surface of the product 800. Meanwhile, since the supporting wheel 121 is in an active state in the mounting case 110, the second driver 150 can only be in driving connection with the roller assembly 132.
In an embodiment, referring to fig. 1, a cylindrical image capturing device includes a first capturing device 200, a second capturing device 300, and the positioning rotating mechanism 100 in any of the above embodiments. The first collector 200 is mounted on the mounting case 110, and the first collector 200 is used for collecting images on the outer circumferential surface of the product 800. The second collector 300 is located at one side of the mounting case 110, and the second collector 300 is used for collecting images of the end face of the product 800.
In the above-mentioned cylinder image capturing device, the above-mentioned positioning and rotating mechanism 100 is adopted, and in the image capturing process, because the two roller assemblies 132 are arranged at intervals, the outer peripheral surface of the product 800 can be stably supported on the two roller assemblies 132. The first driver 140 is activated to drive the mounting seat 131 or the mounting shell 110 to move, so that the roller assemblies 132 and the supporting wheels 121 are close to each other, and the product 800 is stably clamped between the two roller assemblies 132 and the two supporting wheels 121. As the driving of the first driver 140 continues, the holding force of the product 800 between the roller assembly 132 and the support wheel 121 increases. Because the roller assemblies 132 or the supporting wheels 121 can be elastically compressed, the roller assemblies 132 or the supporting wheels 121 elastically abut against the outer peripheral surface of the product 800 in the process that the product 800 is gradually clasped, the clamping force on the product 800 is effectively controlled, and the product 800 is prevented from being damaged due to overlarge clamping force on the premise that the product 800 is stably clamped; meanwhile, the product 800 is ensured not to generate lateral displacement in the rotation process. Finally, the second driver 150 is started to drive the supporting wheel 121 or the roller assembly 132 to rotate, so that the product 800 is stably and uniformly rotated, and the appearance image of the product 800 is stably acquired, for example: an image of the outer peripheral surface of the product 800, an image of the end surface of the product 800, and the like.
The first collector 200 and the second collector 300 are both Contact Image Sensors (CIS).
In one embodiment, referring to fig. 6, an image vision inspection system includes a frame 500, a transfer platform 400 and a cylindrical image capturing device thereon. The conveying platform 400 is installed on the frame 500, the cylinder image capturing device is installed on the conveying platform 400, and the conveying platform 400 is used for conveying the product 800 to a position corresponding to the positioning structure 130 and outputting the captured product 800.
The image visual inspection system adopts the above positioning rotation mechanism 100, and in the image acquisition process, the product 800 is conveyed to the position corresponding to the positioning structure 130 through the conveying platform 400, please refer to fig. 4; the first driver 140 is activated to drive the mounting seat 131 or the mounting shell 110 to move, so that the roller assemblies 132 and the supporting wheels 121 are close to each other, and the product 800 is stably clamped between the two roller assemblies 132 and the two supporting wheels 121, please refer to fig. 5. As the driving of the first driver 140 continues, the holding force of the product 800 between the roller assembly 132 and the support wheel 121 increases. Because the roller assemblies 132 or the supporting wheels 121 can be elastically compressed, the roller assemblies 132 or the supporting wheels 121 elastically abut against the outer peripheral surface of the product 800 in the process that the product 800 is gradually clasped, the clamping force on the product 800 is effectively controlled, and the product 800 is prevented from being damaged due to overlarge clamping force on the premise that the product 800 is stably clamped; meanwhile, the product 800 is ensured not to generate lateral displacement in the rotation process. Finally, the second driver 150 is started to drive the supporting wheel 121 or the roller assembly 132 to rotate, so that the product 800 is stably and uniformly rotated, and the appearance image of the product 800 is stably acquired, for example: an image of the outer peripheral surface of the product 800, an image of the end surface of the product 800, and the like.
It should be noted that there are various ways for the conveying platform 400 to convey the product 800, for example, a roller set or a belt conveying mechanism is provided on the conveying platform 400, and the specific way for conveying the product 800 is not limited in this embodiment, and only the product 800 needs to circulate on the conveying platform 400.
It should be further noted that, when the first driver 140 is connected to the mounting seat 131, the first driver 140 drives the roller assembly 132 to move toward the supporting wheel 121, at this time, a hole through which the positioning structure 130 penetrates needs to be formed on the conveying platform 400 to ensure that the roller assembly 132 jacks up the product 800 under the action of the first driver 140, at this time, the positioning structure 130 is located below the conveying platform 400, and the supporting assembly 120 is located above the conveying platform 400; when the first driver 140 is connected to the mounting shell 110, the first driver 140 drives the supporting wheel 121 to move toward the roller assembly 132, and at this time, a hole for the mounting shell 110 to penetrate through needs to be formed in the conveying platform 400, meanwhile, the positioning structure 130 is located above the conveying platform 400, and the supporting assembly 120 is located below the conveying platform 400.
Specifically, referring to fig. 4, the first driver 140 is connected to the mounting seat 131 and located below the transferring platform 400. When the product 800 is transferred to a position corresponding to the positioning structure 130, the first driver 140 is activated, so that the positioning structure 130 jacks up the product 800 and moves toward the supporting wheel 121, so that the product 800 is stably clamped between the roller assembly 132 and the supporting wheel 121.
Further, referring to fig. 4, the image visual inspection system further includes a blocking component 410. The transfer platform 400 is disposed to be inclined on the frame 500. The cylinder image capturing devices and the blocking members 410 are sequentially distributed along the conveying direction of the product 800. The blocking assembly 410 is used to block the product 800 on the positioning structure 130. Therefore, the conveying platform 400 conveys the products 800 in a manner of sequentially rolling down the conveying platform 400 by the self weight of the products 800. During the detection process, the products 800 sequentially roll along the conveying platform 400, when the products 800 roll to the blocking assembly 410, the blocking assembly 410 is started, and the rolling of the products 800 is stopped, so that the products 800 stay on the positioning structure 130; then, the first driver 140 is started, and this time, taking the example that the first driver 140 is connected with the mounting seat 131 as an example, at this time, the first driver 140 drives the positioning structure 130 to drive the product 800 to move toward the supporting wheel 121, so that the product 800 is stably clamped between the supporting wheel 121 and the roller assembly 132, so as to complete the outline image acquisition of the product 800.
It should be noted that the conveying direction of the product 800 is the moving direction of the product 800 on the conveying platform 400, and for convenience of understanding, the conveying direction is the direction indicated by S in fig. 1 by taking fig. 1 as an example.
Further, referring to fig. 4, the blocking assembly 410 includes a third driver 412 and a baffle 411, the baffle 411 is in transmission connection with the third driver 412, the third driver 412 is mounted on the frame 500500, and the baffle 411 is located at the downstream end of the positioning structure 130.
In one embodiment, referring to fig. 4, the image vision inspection system further includes a positioning assembly 420, and the positioning assembly 420, the cylinder image capturing device and the blocking assembly 410 are sequentially distributed along the conveying direction of the product 800, that is, the positioning assembly 420 is located at the upstream end of the positioning structure 130, and when the product 800 is conveyed to the position corresponding to the positioning structure 130, the positioning assembly 420 is activated to position the next captured product 800 on the conveying platform 400.
Specifically, referring to fig. 4, the positioning assembly 420 includes a fourth driver 422 and a positioning plate 421, the positioning plate 421 is connected to the fourth driver 422, and the positioning plate 421 is in abutting engagement with the end surface of the product 800.
Optionally, the third driver 412 and the fourth driver 422 are both air cylinders, hydraulic cylinders, electric cylinders, or the like.
In one embodiment, referring to fig. 6, the image visual inspection system further includes a screening structure 600. The cylinder image capturing device, the blocking assembly 410 and the screening structure 600 are sequentially distributed along the conveying direction of the product 800. The screening arrangement 600 is used to screen and sort the product 800. Thus, the product 800 is divided into a detection preparation area, an image acquisition area, a screening preparation area and a screening area on the conveying platform 400 in sequence. After the appearance image of the product 800 is collected, the product 800 is screened in the screening structure 600, and the products 800 with different qualities are classified.
Further, referring to fig. 1 and fig. 6, the screening structure 600 includes an algorithm operation module 610, a screening unit (not shown) and a classification box 620, wherein the algorithm operation module 610 is configured to convert the image information of the first collector 200 and the second collector 300 and compare the converted image information with the sample image; the screening unit is configured to receive the comparison result information and screen the product 800. The sorting box 620 is used to sort the products 800, such that the products 800 are placed in a sorted manner. In the screening process of the product 800, an air cylinder or a hydraulic cylinder device can be adopted to correspondingly push the product 800 into different sorting boxes 620.
In an embodiment, referring to fig. 6, the image vision inspection system further includes a controller 700, and the first collector 200 and the second collector 300 are electrically connected to the controller 700. Meanwhile, the screening structure 600 is also electrically connected to the controller 700. Wherein, the controller 700 is PLC controlled.
In one embodiment, the number of the image visual detection systems is two, and the two image visual detection systems are arranged in parallel and respectively matched with the two production lines correspondingly.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present invention, it is to be understood that the terms "central," "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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the 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," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. 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.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Claims (10)
1. A positioning and rotating mechanism, comprising:
mounting a shell;
the supporting assembly comprises two supporting wheels, and the two supporting wheels are arranged in the mounting shell at intervals;
the positioning structure comprises a mounting seat and two roller assemblies arranged on the mounting seat at intervals, the roller assemblies and the supporting wheels are respectively used for abutting against the outer peripheral surface of a product and clamping the product, and the roller assemblies can be elastically compressed on the mounting seat;
the first driver is in transmission connection with the mounting seat and/or the mounting shell and is used for driving the supporting wheels and the roller assemblies to move close to or away from each other; and
and the second driver is in transmission connection with the supporting wheel and is used for driving the supporting wheel to rotate.
2. The positioning and rotating mechanism according to claim 1, wherein the positioning structure further comprises an elastic member, the roller assembly is movably mounted on the mounting seat, and the elastic member is supported between the roller assembly and the mounting seat.
3. The positioning and rotating mechanism according to claim 2, wherein the mounting seat is provided with a mounting groove, two opposite side walls of the mounting groove are provided with movable holes, the roller assembly is installed in the mounting groove, two ends of the roller assembly respectively penetrate into the movable holes, and the elastic member is arranged between the roller assembly and the mounting seat.
4. The positioning and rotating mechanism according to claim 3, wherein the elastic member is a torsion spring, the torsion spring is mounted on the mounting seat, one end of the torsion spring is connected to the mounting seat, and the roller assembly is supported at the other end of the torsion spring; and/or the presence of a gas in the gas,
the roller assembly comprises a supporting shaft and a positioning wheel sleeved on the supporting shaft, two ends of the supporting shaft penetrate into the movable holes respectively, the elastic part is arranged between the supporting shaft and the mounting seat, and the positioning wheel is located in the mounting groove.
5. The positioning and rotating mechanism according to any one of claims 1 to 4, wherein the number of the supporting components and the positioning structures is at least two, the at least two supporting components are arranged in the mounting shell at intervals, and the positioning structures and the supporting components are arranged in a one-to-one correspondence manner.
6. The positioning and rotating mechanism according to claim 5, wherein the center distance D between two adjacent positioning structures1The center distance D between two adjacent supporting components2Both being larger than the center-to-center distance D of two products abutting against each other3。
7. A positioning and rotating mechanism, comprising:
mounting a shell;
the supporting assembly comprises two supporting wheels, the two supporting wheels are arranged in the mounting shell at intervals, and the supporting wheels can be elastically compressed in the mounting shell;
the positioning structure comprises a mounting seat and two roller assemblies arranged on the mounting seat at intervals, and the roller assemblies and the supporting wheels are respectively used for abutting against the outer peripheral surface of a product and clamping the product;
the first driver is in transmission connection with the mounting seat and/or the mounting shell and is used for driving the supporting wheels and the roller assemblies to move close to or away from each other; and
and the second driver is in transmission connection with the roller assembly and is used for driving the roller assembly to rotate.
8. The utility model provides a cylinder image acquisition device, its characterized in that includes first collector, second collector and any one of claims 1-7 location slewing mechanism, first collector is installed on the installation shell, first collector is used for right the outer peripheral face of product carries out image acquisition, the second collector is located one side of installation shell, the second collector is used for right the terminal surface of product carries out image acquisition.
9. An image visual inspection system, comprising a frame, a conveying platform and the cylinder image acquisition device of claim 8, wherein the conveying platform is mounted on the frame, the cylinder image acquisition device is mounted on the conveying platform, and the conveying platform is used for conveying the product to a position corresponding to the positioning structure and outputting the acquired product.
10. The visual image inspection system of claim 9, further comprising a blocking assembly, wherein the conveying platform is disposed on the frame in an inclined manner, the cylindrical image capturing devices and the blocking assembly are sequentially distributed along a conveying direction of the product, and the blocking assembly is configured to block the product on the positioning structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010927975.4A CN112229850A (en) | 2020-09-07 | 2020-09-07 | Positioning rotating mechanism, cylinder image acquisition device and image visual detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010927975.4A CN112229850A (en) | 2020-09-07 | 2020-09-07 | Positioning rotating mechanism, cylinder image acquisition device and image visual detection system |
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| Publication Number | Publication Date |
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| CN112229850A true CN112229850A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010927975.4A Pending CN112229850A (en) | 2020-09-07 | 2020-09-07 | Positioning rotating mechanism, cylinder image acquisition device and image visual detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113588661A (en) * | 2021-07-28 | 2021-11-02 | 福建北电新材料科技有限公司 | Detection device |
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