CN109813723B - Appearance detection equipment and appearance detection method of product to be detected - Google Patents

Abstract

The invention discloses appearance detection equipment and an appearance detection method of a product to be detected, and belongs to the technical field of appearance detection. The appearance detection equipment comprises a conveying system and a detection station, wherein the conveying system comprises a conveying rail, and a loading and unloading clamp and a conveying device which are positioned on the conveying rail; the conveying system is provided with a main surface detection system, a middle frame detection system, a concave surface detection system and a convex surface detection system, wherein the concave surface detection system is used for detecting a groove arranged on the first main surface; the convex surface detection system is used for detecting a plane protruding from the second main surface. The appearance detection method comprises the following steps: detecting a first main surface of a product to be detected at a first detection station and a groove and/or a convex plane of the first main surface at a second detection station; and then turning over, and detecting the second main surface at a first detection station. The invention realizes the unification and standardization of product appearance detection and high-efficiency detection.

Description

Appearance detection equipment and appearance detection method of product to be detected

Technical Field

The invention relates to the technical field of appearance detection, in particular to appearance detection equipment and an appearance detection method of a product to be detected.

Background

With the improvement of the living standard of substances, the requirements of consumers on the appearance of products are also continuously improved. Especially for electronic products, such as intelligent terminal products of mobile phones, tablet computers and the like, the processing process precision is higher, if the appearance of the product has defects of foreign matters, pinholes, impurities, different colors, bubbles, concave-convex, scratches, bright spots and the like, the quality index and the aesthetic degree of the product are greatly influenced, so that the product is necessary to be subjected to defect detection of a system before leaving the factory.

At present, most product appearance detection mainly depends on manual visual inspection, and the conditions of missed inspection, unstable detection and the like are easy to occur, so that the appearance quality of the product delivered from the factory can not be ensured, and meanwhile, the manual detection is high in labor intensity and low in efficiency.

For this reason, it is desirable to provide an appearance detecting apparatus and an appearance detecting method to solve the above-mentioned problems.

Disclosure of Invention

An object of the present invention is to provide an appearance inspection apparatus for realizing unification and standardization of product appearance inspection and high-efficiency inspection.

Another object of the present invention is to provide a method for detecting the appearance of a product to be detected, so as to realize high-efficiency detection of the appearance of the product.

To achieve the purpose, the invention adopts the following technical scheme:

An appearance detection apparatus comprising:

the conveying system comprises a conveying track, a loading and unloading clamp and a conveying device, wherein the loading and unloading clamp and the conveying device are positioned on the conveying track;

Along the conveying track is provided with:

A main surface detection system for detecting a first main surface and a second main surface of a product to be detected which are oppositely arranged;

A center detection system for detecting a center portion located between the first main surface and the second main surface;

A concave surface detection system for detecting a concave surface disposed on the first major surface and/or the second major surface;

and the convexity detection system is used for detecting a plane protruding from the first main surface and/or the second main surface.

By arranging the main surface detection system, the middle frame detection system, the concave surface detection system and the convex surface detection system, the appearance of products such as mobile phones can be comprehensively detected, and defects such as pinholes, impurities, different colors, bubbles, concave and convex surfaces, scratches, bright spots and the like can be found no matter whether the main surface of the products or the convex or concave parts exist, so that the uniformity and standardization of the appearance detection of the products are realized; meanwhile, the detection systems are integrated into the detection equipment, and the conveying system is used for conveying among different detection systems, so that the efficiency of product appearance detection is improved.

As an alternative of the appearance inspection apparatus, the appearance inspection apparatus further includes a turnover station capable of turning over the product to be inspected, and the turnover station is located at one end of the inspection station.

As an alternative to the above appearance inspection apparatus, the conveying device is connected to the conveying track, and the conveying device includes an X moving mechanism, a Y moving mechanism, and an R _Z rotating mechanism, where a free end of the R _Z rotating mechanism is provided with a bearing member capable of bearing a product to be inspected.

As an alternative to the above appearance inspection apparatus, the main surface inspection system includes:

A first light source including a first main light source configured to light vertically irradiated to a main surface of the product to be inspected, and a plurality of first side light sources; a plurality of first side light sources are configured to be obliquely irradiated to the main surface of the product to be detected;

And the first imaging device is configured to be positioned right above the main surface of the product to be detected.

As an alternative to the above appearance detecting device, the center detecting system includes:

The second light source is an arc-shaped light source, and two ends of the arc-shaped light source are respectively positioned on the upper side and the lower side of the product to be detected;

The two second imaging devices are respectively located on the upper side and the lower side of the product to be detected, and are obliquely arranged, wherein lenses of the second imaging devices can face the product to be detected.

As an alternative to the above appearance detecting device, the concave surface detecting system includes:

A third light source configured to be capable of perpendicularly illuminating a concave surface of the product to be inspected;

A third imaging device;

The third angle adjusting plate is connected with the third imaging device, the third angle adjusting plate is provided with a third arc groove, and the third imaging device can vertically shoot the concave surface of the product to be detected after moving along the third arc groove.

As an alternative to the appearance detecting device described above, the convexity detecting system includes:

A fourth light source, which is a coaxial light source, configured to irradiate a plane of the product to be detected higher than the main surface;

And a fourth imaging device, the lens of which is configured to face the plane of the product to be detected higher than the main surface.

As an alternative to the above appearance inspection apparatus, the turning station is provided with a turning mechanism including:

A lifting cylinder;

the rotary cylinder is connected with the telescopic end of the lifting cylinder;

and the shell of the clamping cylinder is connected with the telescopic end of the rotary cylinder.

As an alternative to the appearance detection device, the product appearance detection device includes a purging device for purging dust on a surface of the product to be detected.

The appearance detection method of the product to be detected comprises the following steps:

1) Detecting a first main surface at a first detection station, and detecting grooves and/or protruding planes on the first main surface at a second detection station;

2) Turning over the product to be detected;

3) And detecting the second main surface at the first detection station, and detecting the grooves and/or the protruding planes of the second main surface at the second detection station.

After the detection of the main surface on one side and other characteristics of the main surface is finished, the detection of the main surface on the other side and other characteristics of the main surface is carried out, so that the repeated overturning operation of the product in the detection process is avoided, and the high-efficiency detection of the appearance of the product is realized.

As an alternative to the method for detecting the appearance of the product to be detected, the step 1) or the step 3) further includes:

And detecting the middle frame part of the product to be detected at a third detection station.

As an alternative to the method for detecting the appearance of the product to be detected, the step 1) further includes purging the product to be detected.

The invention has the beneficial effects that:

The appearance detection equipment can detect the appearance of products such as mobile phones more comprehensively by arranging the main surface detection system, the middle frame detection system, the concave surface detection system and the convex surface detection system, and defects such as pinholes, impurities, different colors, bubbles, concave-convex surfaces, scratches, bright spots and the like can be found no matter whether the main surface of the products or the convex or concave parts exist, so that the unification and standardization of the appearance detection of the products are realized; meanwhile, the detection systems are integrated into the detection equipment, and the conveying system is used for conveying among different detection systems, so that the efficiency of product appearance detection is improved;

The appearance detection method detects the main surface on one side and other characteristics of the main surface on the other side after the detection of the main surface and other characteristics of the main surface is completed, so that repeated overturning operation of the product in the detection process is avoided, and the high-efficiency detection of the appearance of the product is realized.

Drawings

Fig. 1 is a schematic view of a first view angle of an appearance detecting apparatus in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a second view angle of an appearance detecting device according to an embodiment of the present invention

FIG. 3 is a schematic diagram of a conveyor system in accordance with an embodiment of the invention;

FIG. 4 is a schematic structural view of a feeding fixture according to an embodiment of the present invention;

FIG. 5 is a schematic view of a splint according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a gantry mounted main surface inspection system in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view of a side adjustment plate assembly in accordance with an embodiment of the present invention;

FIG. 8 is a schematic view of a first angle adjusting plate according to an embodiment of the present invention;

FIG. 9 is a schematic view of a second angle adjustment plate according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a middle frame detection system according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a first view of a concave surface detection system according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of a second view of a concave surface detection system according to an embodiment of the present invention;

FIG. 13 is a schematic view of a connector in accordance with an embodiment of the present invention;

FIG. 14 is a schematic diagram of a gantry mounted convexity detection system according to an embodiment of the present invention;

FIG. 15 is an enlarged schematic view of FIG. 14 at A;

FIG. 16 is a schematic view of a turnover mechanism in an embodiment of the invention;

fig. 17 is a schematic view of a structure in which an appearance detecting device in an embodiment of the present invention is placed in a housing.

In the figure:

1', a mobile phone; 11', a first major surface; 12', a second major surface; 13', a middle frame portion;

100. A primary surface inspection system; 110. a first imaging device; 120. a first light source; 121. a first primary light source; 122. a first side light source; 130. a first adjustment plate; 131. a first elongated aperture; 140. a first orifice plate; 150. a second adjusting plate; 151. a second elongated aperture; 160. a side adjustment plate assembly; 1601. a third elongated aperture; 1602. a fourth elongated aperture; 1603. a fifth elongated aperture; 1604. a relief groove; 1605. a sixth elongated aperture; 1606. a seventh elongated aperture; 161. a first side plate; 162. a second side plate; 163. a third side plate; 164. A fourth side plate; 165. a first connection frame; 166. a second connecting frame; 167. a first angle adjusting plate; 1671. A first arc-shaped groove; 168. a second angle adjusting plate; 1681. a second arc-shaped groove; 169. a first mounting block; 1610. a second mounting block; '

200. A middle frame detection system; 210. a second imaging device; 220. a second light source; 230. a second mounting bracket; 231. a middle frame detection vertical plate; 232. an angle adjustment platform; 233. a middle frame light source mounting plate; 2331. a waist-shaped hole;

300. A concave surface detection system; 310. a third imaging device; 320. a third light source; 330. a third mounting bracket; 331. a concave surface detection vertical plate; 332. a third angle adjusting plate; 3321. a third arc-shaped groove; 333. a light source mounting rack; 3331. a rectangular hole; 334. a connecting piece; 3341. a first mounting plate; 3342. a second mounting plate; 3343. a third mounting plate; 3344. a fourth arc-shaped groove; 335. a level adjustment assembly;

400. a convexity detection system; 410. a fourth imaging device; 420. a fourth light source; 430. a fourth mounting bracket; 431. a second orifice plate; 432. a third adapter; 433. a third adjusting plate; 4331. a tenth elongated aperture; 434. a fourth adjusting plate; 4341. an eleventh elongated aperture;

500. a turnover mechanism; 510. a lifting cylinder; 520. a rotary cylinder; 530. a clamping cylinder;

600. A conveying system;

610. A feeding clamp; 611. a first bracket; 612. a second bracket; 613. a clamp lifting cylinder; 614. A clamp horizontal cylinder; 615. a clamping plate; 6151. a clamping part; 6152. a carrying part;

620. a blanking clamp; 630. a transfer device; 640. a conveying rail;

700. a portal frame; 710. a first upright; 720. a second upright; 730. a first cross beam; 740. a second cross beam;

800. A housing.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

Example 1

As shown in fig. 1 and 2, the present embodiment provides an appearance detection device, which is mainly used for detecting the appearance of a mobile phone 1', a tablet computer, and the like. Taking the mobile phone 1 'as an example, the appearance of the mobile phone may generally include a first main surface 11' and a second main surface 12 'which are opposite to each other, and a middle frame portion 13' located between the first main surface 11 'and the second main surface 12', and further includes a groove concavely formed on the first main surface 11 'and a plane convexly formed on the second main surface 12', where the groove may be used to form an earpiece part, and the plane convexly formed on the second main surface 12 'may be a plane where the rear camera of the mobile phone 1' protrudes from the mobile phone casing. Of course, in other products, grooves may be provided in the second main surface 12', raised planes may be provided in the first main surface 11', or both the first main surface 11 'and the second main surface 12' may be provided with grooves and raised planes. The embodiment is mainly further described for the mobile phone 1' serving as a product to be detected.

The appearance inspection device comprises a conveying system 600 and an inspection station, wherein the conveying system 600 comprises a conveying track 640, and a loading and unloading clamp and conveying device 630 positioned on the conveying track 640; the inspection stations are provided with a main surface inspection system 100, a center inspection system 200, a concave inspection system 300, and a convex inspection system 400 along the conveying rail 640. The main surface inspection system 100 is used for inspecting a first main surface 11 'and a second main surface 12' of a product to be inspected, which are oppositely arranged; the center detecting system 200 is used for detecting the center portion 13' located between the first main surface 11' and the second main surface 12'; concave inspection system 300 is used to inspect a groove disposed on first major surface 11'; the convexity detection system 400 is used for detecting a plane protruding from the second main surface 12'. By arranging the main surface detection system 100, the middle frame detection system 200, the concave surface detection system 300 and the convex surface detection system 400, the appearance of the product such as the mobile phone 1' can be comprehensively detected, and defects such as pinholes, impurities, different colors, bubbles, concave-convex surfaces, scratches, bright spots and the like can be found no matter whether the main surface of the product or the convex or concave part exists, so that the uniformity and standardization of the appearance detection of the product are realized; the detection systems are integrated into the detection equipment at the same time, and the conveying system 600 is used for conveying different detection systems, so that the efficiency of product appearance detection is improved

Specifically, the conveying track 640 may be configured according to the actual production process of the product, such as a linear conveying track or other customized conveying tracks. In the present embodiment, the conveying rail 640 is a linear type, and the conveying device 630 reciprocates along the linear type conveying rail 640. Wherein the conveyor track 640 may directly employ a linear motion platform.

For convenience of description below, a direction parallel to the linear conveyance rail 640 is set as an X direction, a direction perpendicular to the linear conveyance rail 640 and perpendicular to the height direction is set as a Y direction, and the height direction is set as a Z direction.

Further alternatively, as shown in fig. 3, in this embodiment, the loading and unloading fixture includes a loading fixture 610 and an unloading fixture 620, where the loading fixture 610 and the unloading fixture 620 are respectively located at two ends of the conveying track 640, and the detection station is located between the loading fixture 610 and the unloading fixture 620. So set up, through material loading anchor clamps 610 and unloading anchor clamps 620 respectively with the upper and lower stream station connection of outward appearance check out test set to be convenient for cell-phone 1' detects in batches in order to accelerate detection speed. Of course, in other embodiments, the loading and unloading fixture may be the same fixture, the loading and unloading fixture places the mobile phone 1 'to be detected on the conveying device 630, and then after detection of each system in the detection station, the conveying fixture sends the mobile phone 1' to be detected back to the loading and unloading fixture to complete unloading.

Specifically, as shown in fig. 4, the basic structures of the feeding clamp 610 and the discharging clamp 620 are the same, and the feeding clamp may include a first bracket 611 and a second bracket 612 located at two sides of the conveying track 640, the first bracket 611 and the second bracket 612 are both provided with a clamp lifting cylinder 613 and a clamp horizontal cylinder 614, a cylinder body of the clamp horizontal cylinder 614 is connected with a telescopic end of the clamp lifting cylinder 613, telescopic ends of the two clamp horizontal cylinders 614 are oppositely arranged, and telescopic ends of the two clamp horizontal cylinders 614 are both provided with clamping plates 615, and the two clamping plates 615 can be relatively close to or far away from each other under the action of the two clamp horizontal cylinders 614, so as to clamp or relax the mobile phone 1'. Wherein the conveyor 630 is movable between the first rack 611 and the second rack 612. When the feeding clamp 610 needs to place the mobile phone 1' on the conveying device 630, the mobile phone 1' is firstly lowered to the conveying device 630 through the clamp lifting cylinder 613, then the two clamping plates 615 are separated from each other by the clamp horizontal cylinder 614, and the mobile phone 1' is placed on the conveying device 630; similarly, when the blanking fixture 620 needs to clamp the mobile phone 1' on the conveying device 630, the mobile phone 1' is firstly lowered to the conveying device 630 by the fixture lifting cylinder 613, then the two clamping plates 615 are mutually close to each other by the fixture horizontal cylinder 614 until the clamping is completed by contacting with the mobile phone 1', and then the fixture lifting cylinder 613 is lifted away from the conveying device 630. Optionally, as shown in fig. 5, in order to ensure the stability of holding the mobile phone 1', the clamping plate 615 includes a clamping portion 6151 that can contact with the side surface, i.e., the middle frame, of the mobile phone 1', and a bearing portion 6152 that can contact with the first main surface 11 'or the second main surface 12' of the mobile phone 1', so that the held mobile phone 1' is placed in a groove with a bottom surface, and the holding stability is greatly improved. It is understood that the arrangement of the bearing 6152 does not affect the movement between the loading and unloading jig and the conveyor 630. Wherein the bearing portions 6152 on the clamping plate 615 are arranged at intervals along the length direction of the clamping portion 6151, and the middle portion can be used for the conveying device 630 to contact with the mobile phone 1'.

Further optionally, in order to avoid the need for the conveying device 630 to continuously adjust the mobile phone 1' up and down along the Z direction in the detection process, in this embodiment, the detection surfaces of the main surface detection system 100, the middle frame detection system 200, the concave surface detection system 300, and the convex surface detection system 400 are all located on the same plane, and by locating the detection surfaces of the detection systems on the detection stations at the same height, the lifting device for setting the lifting device to adapt to the detection surfaces of different detection systems is omitted from the conveying device 630, and meanwhile, the complexity of the conveying device 630 is reduced. The transmitting device 630 in this embodiment only needs to drive the mobile phone 1' to move on the XY plane. Specifically, the conveying device 630 in this embodiment includes an X moving mechanism, a Y moving mechanism, and an R _Z rotating mechanism, where a free end of the R _Z rotating mechanism is provided with a carrying member capable of carrying a product to be detected. Further alternatively, the bearing component can be a vacuum chuck, and the vacuum chuck does not scratch the surface of the mobile phone 1'. Wherein the delivery device 630 is commercially available directly, such as LPS-06C 14-110X 1050-G10-F06020X F06030 in a monkey. In other embodiments, the conveying device may be of other types, and the embodiment is not limited herein, and is only described as an example. .

Specifically, as shown in fig. 6, the main surface inspection system 100 includes a first light source 120 and a first imaging device 110, the first light source 120 including a first main light source 121 and a plurality of first side light sources 122, the first main light source 121 being configured such that a light beam is perpendicularly irradiated to a main surface of a product to be inspected; the plurality of first side light sources 122 are configured such that light beams are obliquely irradiated to the main surface of the product to be inspected; the first imaging device 110 is configured to be located directly above a major surface of the product. For the mobile phone 1' generally has a flat cuboid structure, the four first side light sources 122 are respectively arranged on four sides of the mobile phone 1', the first main light source 121 is located right above the mobile phone 1', the first main surface 11' or the second main surface 12' of the mobile phone 1' can be irradiated, the first main surface 11' or the second main surface 12' of the mobile phone 1' is irradiated by a plurality of light sources, and after the first imaging device 110 shoots, whether the first main surface 11' or the second main surface 12' has defects such as foreign matters, pinholes, impurities, abnormal colors, bubbles, concave-convex, scratches, bright spots and the like is judged by the processing device.

Alternatively, referring again to fig. 6, the appearance inspection device includes a portal frame 700, the portal frame 700 including first and second columns 710 and 720 located at both sides of a conveying rail 640, and first and second beams 730 and 740 located between the first and second columns 710 and 720, the first and second beams 730 and 740 being disposed in the Y direction, wherein the first beam 730 is higher than the second beam 740. Wherein a first mounting bracket for mounting the first light source 120 and the first imaging device 110 of the main surface inspection system 100 is connected to the gantry 700. Specifically, the first mounting bracket includes a first adjustment plate 130 for mounting the first imaging device 110, first and second aperture plates 140 and 150 for mounting the first main light source 121, and a side adjustment plate assembly 160 for mounting the first side light source 122.

The first adjusting plate 130 is provided with a first elongated hole 131 with a length direction parallel to the Z direction, so that the first imaging device 110 can adjust the height along the Z direction in a certain range, which is convenient for focusing for the mobile phones 1' with different sizes.

The first orifice plate 140 is fixedly connected with the second cross beam 740, the second adjusting plate 150 is connected with the first main light source 121, the second adjusting plate 150 is connected with the first orifice plate 140, the first orifice plate 140 is provided with a plurality of groups of adjusting holes along the Y direction, and the second adjusting plate 150 selectively connects a bolt connecting structure with any group of adjusting holes on the first orifice plate 140 to realize the adjustment of the first main light source 121 along the direction parallel to the Y direction; optionally, the second adjusting plate 150 is also provided with a second elongated hole 151 with a length direction parallel to the Z direction, and the second elongated hole 151 can be connected with an adjusting hole on the first aperture plate 140, so that the first main light source 121 can perform height adjustment along the Z direction within a certain range.

As shown in fig. 7 to 9, the side adjustment plate assembly 160 includes a first side plate 161 and a second side plate 162 which are disposed opposite to each other, and a first connection frame 165 and a second connection frame 166 which are disposed opposite to each other, and the first side plate 161, the first connection frame 165, the second side plate 162 and the second connection frame 166 are sequentially connected end to form a rectangle, wherein the middle portions of the first side plate 161 and the second side plate 162 are respectively connected with a third side plate 163 and a fourth side plate 164, and the third side plate 163 and the fourth side plate 164 are respectively connected with a first upright post 710 and a second upright post 720 of the portal frame 700, so that the side adjustment plate assembly 160 is fixedly connected to the portal frame 700. The third side plate 163 and the fourth side plate 164 have the same structure and are all in an L-shaped structure, and a third elongated hole 1601 with a length direction parallel to the Z direction and a fourth elongated hole 1602 with a length direction parallel to the Y direction are all disposed on the third side plate and the fourth side plate. The two first side light sources 122 are connected to the third side plate 163 and the fourth side plate 164 through first connectors, respectively. Optionally, the first adapter includes a first angle adjusting plate 167 that can be fixedly connected to the fourth elongated hole 1602, referring to fig. 8, the first angle adjusting plate 167 includes a first arc-shaped slot 1671, and the first side light source 122 rotates along the first arc-shaped slot 1671 to adjust the inclination angle, so as to irradiate the mobile phones 1' with different sizes. Optionally, referring to fig. 7 again, the first adaptor further includes a first mounting block 169, one side of the first mounting block 169 can be fixedly connected with the first side light source 122, the other side of the first mounting block 169 can be fixedly connected with the first arc-shaped slot 1671, the first mounting block 169 is set to be a non-standard piece, and can be set according to an actual structure of the first side light source 122, wherein the first mounting block 169 can ensure stable mounting of the first side light source 122 and the first angle adjusting plate 167, and can also avoid the phenomenon that the first side light source 122 is damaged due to the uncomfortableness of a mounting structure when the first side light source 122 moves around the first arc-shaped slot 1671 in the process of adjusting an angle. the other two first side light sources 122 are connected to the first side plate 161 and the second side plate 162 by a second adapter. specifically, the first side plate 161 and the second side plate 162 are both provided with a fifth elongated hole 1603 having a length direction parallel to the X direction, the second adaptor includes a second angle adjusting plate 168, referring to fig. 9, the second angle adjusting plate 168 is provided with a second arc-shaped slot 1681 and a sixth elongated hole 1605 having a length direction parallel to the Z direction, the bolting structure may sequentially pass through the fifth elongated hole 1603 and the sixth elongated hole 1605 to realize connection of the first side plate 161 with the second side plate 162 and the second angle adjusting plate 168, the first side light source 122 may be rotated along the second arc-shaped slot 1681 to realize adjustment of the inclination angle, Thereby realizing the irradiation of the mobile phones 1' with different sizes. Referring again to fig. 7, the second adapter further includes a second mounting block 1610, where the second mounting block 1610 functions identically to the first mounting block 169, and may be configured according to the actual structure of the first side light 122. Specifically, two first side light sources 122 are located between the first side plate 161 and the second side plate 162 and are disposed opposite to each other, and the other two first side light sources 122 are located on the third side plate 163 and the fourth side plate 164, respectively. Because two of the first side light sources 122 are disposed between the first side plate 161 and the second side plate 162, two ends of the two first side light sources 122 need to be fixed respectively, in order to avoid that the installation of the first side light sources 122 is not satisfactory due to the processing error of the second installation block 1610, the second installation block 1610 is provided with a seventh elongated hole 1606, so that two ends of the first side light sources 122 can be adjusted adaptively, so that the installation of the first side light sources 122 is satisfactory. Optionally, the middle parts of the first side plate 161 and the second side plate 162 are provided with a relief groove 1604, and the relief groove 1604 is configured to avoid possible interference with the first side plate 161 and the second side plate 162 when the first side light source 122 connected to the third side plate 163 and the fourth side plate 164 performs angle adjustment.

Further, as shown in fig. 10, the middle frame detection system 200 includes a second light source 220 and two second imaging devices 210, the second light source 220 is an arc-shaped light source, and two ends of the arc-shaped light source are respectively located at the upper side and the lower side of the product to be detected; the two second imaging devices 210 are respectively located at the upper side and the lower side of the product to be detected, and the two second imaging devices 210 are obliquely arranged, wherein the lens ends of the second imaging devices 210 can face the product to be detected.

Optionally, the middle frame detection system 200 further includes a second mounting bracket 230, including a middle frame detection vertical plate 231, where the middle frame detection vertical plate 231 is provided with three mounting positions along its height direction, the first mounting position in the middle is used for mounting the second light source 220, and the second mounting positions at two ends are respectively used for mounting the two second imaging devices 210. Specifically, the first mounting position is provided with a middle frame light source mounting plate 233, one end of the middle frame light source mounting plate 233 is connected with the second light source 220, and the other end is provided with a plurality of groups of waist-shaped holes 2331 along a direction parallel to the Y direction, so that the second light source 220 can be conveniently adjusted along the Y direction. The second mounting location is provided with an eighth elongated hole provided along the Z-direction, facilitating the height adjustment of the second imaging device 210 along the Z-direction. And the second installation position is provided with an angle adjustment platform 232 connected with the second imaging device 210, so that the angle of the second imaging device 210 can be conveniently adjusted, and the mobile phone 1' with different models can be conveniently adjusted. Wherein the angle adjustment platform 232 is available directly as Mi Saimi RPG85. In other embodiments, the angle adjustment platform may be of other types, and the embodiment is not limited herein, and is only described as an example.

Further, as shown in fig. 11 and 12, the concave surface detecting system 300 includes a third light source 320 and a third imaging device 310, wherein the third light source 320 is configured to be capable of perpendicularly illuminating the concave surface of the product to be detected; the third imaging device 310 is configured to be able to photograph the concave surface of the cell phone 1' vertically, and can be understood as a side wall and a bottom wall for photographing the groove.

Optionally, the concave detection system 300 further includes a third mounting bracket 330, the third mounting bracket 330 includes a concave detection vertical plate 331, the concave detection vertical plate 331 is provided with two mounting positions along a height direction thereof, a third mounting position above is used for setting the third imaging device 310, and a fourth mounting position below is used for setting the third light source 320. Optionally, the third mounting position is provided with a third angle adjusting plate 332 connected to the third imaging device 310, the third angle adjusting plate 332 is provided with a third arc-shaped slot 3321, and the third imaging device 310 moves along the third arc-shaped slot 3321 to vertically photograph the side wall and bottom wall of the groove. Such as a recess in the handset 1' earpiece position, with a 30 degree chamfer, and correspondingly the third imaging device 310 is adjusted to be substantially perpendicular to the chamfer. In this embodiment, the third arc-shaped slot 3321 in the third angle adjusting plate 332 is close to a quarter arc, and when detecting other sides of the groove, the bearing component capable of rotating in the R _z direction on the conveying device 630 can be used to rotate, so that the mobile phone 1' to be detected can be moved without moving the detecting component in the concave detection system 300, thus saving the space occupation of the appearance detection device and making the device structure more compact. In addition, optionally, the third light source 320 is similar to the first side light source 122, and four light sources are also provided to illuminate the grooves at multiple angles. The third light source 320 mainly detects the grooves on the first main surface 11', such as grooves at the receiver, and the structure of the third light source 320 is much smaller than that of the first main surface 11', so that the four light sources in the third light source 320 are closer to each other to intensively irradiate the grooves. Specifically, the fourth mounting position is connected with a light source mounting frame 333, one end of the light source mounting frame 333 is provided with a rectangular hole 3331, four light sources are distributed around the rectangular hole 3331, wherein the groove of the mobile phone 1' can move to the lower side of the rectangular hole 3331 under the action of the conveying device 630, and the four light sources can irradiate the groove. in addition, in order to better adapt to the detection of the mobile phones 1' with different models, the irradiation angle of the third light source 320 can also be adjusted. Specifically, four light sources in the third light source 320 enclose a rectangle, wherein a connecting piece 334 is disposed between two adjacent light sources, as shown in fig. 13, the connecting piece 334 includes a first mounting plate 3341, a second mounting plate 3342 and a third mounting plate 3343 that are perpendicular to each other, wherein the first mounting plate 3341 and the second mounting plate 3342 are respectively connected with the adjacent light sources, and the first mounting plate 3341 and the second mounting plate 3342 are each provided with a fourth arc-shaped slot 3344 to adjust the angles of the two light sources. The third mounting plate 3343 can be fixedly connected with the third mounting bracket 330 to fix the third light source 320, and optionally, the third mounting position and the fourth mounting position are each provided with a horizontal adjustment assembly 335 that can be adjusted along the Y direction. Wherein the horizontal adjustment assembly 335 may optionally include an intermediate plate disposed along the Y-direction, wherein the intermediate plate may have a ninth elongated aperture disposed along the Y-direction along the length thereof.

Further, since the camera surface protruding from the second main surface 12 'of the mobile phone 1' is higher than the second main surface 12', in the main surface detection system 100, the focal length set by the first imaging device 110 is mainly used to detect the first main surface 11' and the second main surface 12', and it is not possible to accurately detect the plane higher than the second main surface 12'. Alternatively, as shown in fig. 14 and 15, the convex inspection system 400 primarily inspects a plane above the second major surface 12', and includes a fourth light source 420, which is a coaxial light source, configured to illuminate a plane above the major surface of the product to be inspected; the fourth imaging device 410 lens is configured to face a plane of the product to be inspected higher than the main surface. The coaxial light source provides more uniform illumination than the traditional light source, can highlight the surface unevenness of an object, overcomes the interference caused by surface reflection, and simultaneously avoids the reflection of the object, thereby improving the accuracy and reproducibility of machine vision.

Optionally, the convex detection system 400 is disposed on a side of the gantry 700 away from the main surface detection system 100, where the convex detection system 400 may include a fourth mounting bracket 430, the fourth mounting bracket 430 includes a second orifice plate 431 and a third adapter 432, the second orifice plate 431 has the same structure as the first orifice plate 140 in the first mounting bracket, the second orifice plate 431 is disposed on the second beam 740, the third adapter 432 is connected to the second orifice plate 431, two ends of the third adapter 432 along the Z direction are respectively connected to a third adjusting plate 433 and a fourth adjusting plate 434, the third adjusting plate 433 is connected to the fourth imaging device 410, the fourth adjusting plate 434 is connected to the fourth light source 420, and the fourth imaging device 410 is located above the fourth light source 420. Wherein the third and fourth adjustment plates 433 and 434 are provided with tenth and eleventh elongated holes 4331 and 4341, respectively, in the Z direction, so that the fourth imaging apparatus 410 and the fourth light source 420 are adjusted in the Z direction, respectively.

Further optionally, as shown in fig. 16, the appearance detecting device further includes a turnover mechanism 500 capable of turning over the product to be detected, where the turnover mechanism 500 can turn over the mobile phone 1 '180 degrees, that is, when the first main surface 11' is upward, the turnover mechanism 500 can turn over the mobile phone 1 'thereof so that the second main surface 12' is upward. Wherein the flipping mechanism 500 may be disposed on the conveyor 630. In this embodiment, the appearance inspection apparatus is provided with a single overturning station, and the overturning station is located at one end of the inspection station. The turnover mechanism 500 is arranged on the turnover station, and the turnover mechanism 500 comprises a lifting cylinder 510, a rotating cylinder 520 and a clamping cylinder 530; the rotary cylinder 520 is connected with the telescopic end of the lifting cylinder 510; the housing of clamping cylinder 530 is connected to the telescoping end of rotary cylinder 520. The detection systems can be arranged above the detection positions by arranging the turnover mechanism 500, so that the corresponding detection systems are prevented from being arranged below the detection positions, and the arrangement difficulty of the detection systems is reduced; meanwhile, the turnover mechanism 500 is arranged, so that one surface detection system can detect the first main surface 11' and the second main surface 12' of the mobile phone 1', and the cost of the appearance detection equipment is reduced. In addition, the turnover mechanism 500 is separately arranged on the turnover station, compared with the turnover mechanism 500 arranged on the conveying device 630, the turnover mechanism reduces the complexity of the conveying device 630, and the normal use of one conveying device 630 and the turnover mechanism 500 is not affected by damage of the other conveying device.

In this embodiment, a feeding jig 610, a main surface detection system 100, a convex surface detection system 400, a middle frame detection system 200, a concave surface detection system 300, and a turnover mechanism 500 are sequentially disposed along the direction of the linear conveying rail 640. When the mobile phone 1' is specifically used, the mobile phone 1' is fed to the conveying device 630 through the feeding component, the conveying device 630 sequentially sends the mobile phone 1' to the main surface detection system 100, the middle frame detection system 200 and the concave surface detection system 300 for detection, then the mobile phone 1' reaches the turnover mechanism 500 to turn the second main surface 12' of the mobile phone 1' to the upper side, then the conveying device 630 sequentially sends the mobile phone 1' to the convex surface detection system 400 and the main surface detection system 100 for detection, finally the conveying device 630 conveys the mobile phone 1' to the blanking fixture 620, and the blanking fixture 620 sends the mobile phone 1' out of the product appearance detection equipment. In other embodiments, the location of each inspection system in the inspection station may be arbitrarily set.

Optionally, the appearance detecting device includes a housing 800, and the feeding fixture 610, the main surface detecting system 100, the convex surface detecting system 400, the middle frame detecting system 200, the concave surface detecting system 300 and the turnover mechanism 500 are all located in the box body, so as to avoid interference to detection of the mobile phone 1' caused by external dust and the like. The product appearance detection equipment comprises a purging equipment which is used for purging dust on the surface of the product to be detected. Preferably, when the mobile phone 1' enters the feeding clamp 610, the mobile phone 1' is purged by the purging device in the box body, so that dust on the surface of the mobile phone 1' is prevented from affecting the detection result.

Of course, the embodiment only illustrates the appearance detection device through the mobile phone 1', and the embodiment can also be used for appearance detection of a tablet computer and the like. The sizes of the parts in the equipment are correspondingly adjusted.

It should be noted that the appearance inspection device further includes a positioning inspection system, so that the conveying device 630 moves the product to be inspected to the corresponding station for inspection, where the positioning inspection system belongs to the prior art in this field, and is not an improvement of the present embodiment, and will not be described herein.

Example two

The embodiment discloses a product appearance detection method, which comprises the following steps:

1) Detecting a first main surface at a first detection station, and detecting grooves and/or protruding planes on the first main surface at a second detection station;

2) Turning over the product to be detected;

3) And detecting the second main surface at the first detection station, and detecting the grooves and/or the protruding planes of the second main surface at the second detection station.

According to the appearance detection method, after the detection of one main surface and other characteristics of the main surface is finished, the detection of the other main surface and other characteristics of the main surface is carried out, so that the repeated overturning operation of a product in the detection process is avoided, and the high-efficiency detection of the appearance of the product is realized.

Optionally, step 1) or step 3) further includes detecting the middle frame portion of the product to be detected at a third detection station. Further, the step 1) is preceded by a step of purging the product to be detected.

In this embodiment, the mobile phone 1' is also used as a product to be detected, and the appearance detection device in the first embodiment is used to implement the appearance detection method, which specifically includes the following steps:

S1, placing the mobile phone 1' on a feeding clamp 610;

s2, the feeding clamp 610 reaches the bearing part of the conveying device 630 under the action of the clamp lifting cylinder 613, and then the clamp horizontal cylinder 614 enables the two clamping plates 615 to be separated from each other until the clamping plates are completely separated from the mobile phone 1';

s3, the conveying device 630 moves the mobile phone 1 'to a detection station where the main surface detection system 100 is located, and when the first main surface 11' faces upwards, the main surface detection system 100 detects the first main surface 11 'of the mobile phone 1';

s4, the conveying device 630 moves the mobile phone 1 'to a detection station where the concave detection system 300 is located, and the concave detection system 300 detects the receiver groove arranged on the side of the first main surface 11', wherein the side wall and the bottom wall of the receiver groove are mainly detected;

s5, the turnover mechanism 500 turns the mobile phone 1 'to enable the second main surface 12' to face upwards;

S6, the conveying device 630 moves the mobile phone 1 'to a detection station where the convex detection system 400 is located, and the convex detection system 400 detects a camera arranged on the side of the second main surface 12', wherein the detection is mainly performed on a plane higher than the second main surface 12', and the plane is parallel to the second main surface 12';

S7, the conveying device 630 moves the mobile phone 1' to a detection station where the main surface detection system 100 is located, and the main surface detection system 100 detects the second main surface 12' of the mobile phone 1 ';

S8, the mobile phone 1' is moved to the blanking clamp 620 by the conveying device 630, the clamp lifting cylinder 613 in the blanking clamp 620 descends, then the clamp horizontal cylinder 614 enables the two clamping plates 615 to be close to each other until the mobile phone 1' is clamped, and the clamp lifting cylinder 613 ascends to facilitate the mobile phone 1' with the appearance detection to enter the next production line.

The above steps further include a step S9 of detecting the middle frame of the mobile phone 1', in which the transmitting device 630 moves the mobile phone 1' to a middle frame detecting station to detect the middle frame of the mobile phone 1 '. Since the mobile phone 1' is generally rectangular, and the first main surface 11' is rectangular, it includes two long sides disposed opposite to each other and two short sides disposed opposite to each other, and the Y moving mechanism and the R _z rotating mechanism of the conveying device 630 are both linked, so that the second light source 220 and the second imaging device 210 of the middle frame detection system 200 can detect both the long-side middle frame and the short-side middle frame portion 13 '. Wherein step S9 may be located in any one of the steps after step S2 and before step S8. In this embodiment, in view of the compact arrangement of the appearance inspection apparatus, the convex inspection system 400 and the main surface inspection system 100 are mounted on the gantry 700, and the concave inspection system 300 and the center inspection system 200 are sequentially arranged along the linear conveyor rail 640. Thus, in this embodiment, the step S9 may be located after the step S3 or before the step S6.

Alternatively, the flipping mechanism 500 may be disposed on the conveyor 630, or the flipping station may be disposed separately. When the appearance inspection device is provided with the turning station separately, step S5 further includes the conveyor 630 moving the mobile phone 1' to the turning station, and then turning the mobile phone 1' by the turning mechanism 500 so that the second main surface 12 ' faces upwards.

In addition, the embodiment further includes step S10, where the purging device purges the product to be detected. Step S10 may be located after step S1 and before step S2, or may extend through the entire detection process.

It should be stated that the appearance detection method in this embodiment is not only suitable for detecting the appearance of the mobile phone 1', but also can detect numerous products such as a tablet computer, a display, an electronic reader and the like.

In the description herein, it should be understood that the terms "upper" and the like are used for convenience of description and simplicity of operation based on the orientation or positional relationship shown in the drawings, and do not necessarily indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of the present specification, reference to the term "an embodiment" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate technical solution, and this description is provided for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims (11)

1. An appearance detecting apparatus, characterized by comprising:

a conveying system (600) comprising a conveying track (640), and a loading and unloading clamp and a conveying device (630) which are positioned on the conveying track (640);

a detection station provided along the conveying track (640) with:

a main surface detection system (100) for detecting a first main surface and a second main surface of a product to be detected which are oppositely arranged;

a center detection system (200) for detecting a center portion located between the first main surface and the second main surface;

a concave surface detection system (300) for detecting a concave surface disposed on the first major surface and/or the second major surface;

a convexity detection system (400) for detecting a plane protruding from the first main surface and/or the second main surface;

The center detection system (200) includes:

A second light source (220) which is an arc-shaped light source, wherein two ends of the arc-shaped light source are respectively positioned on the upper side and the lower side of the product to be detected;

The two second imaging devices (210) are respectively positioned on the upper side and the lower side of the product to be detected, and the two second imaging devices (210) are obliquely arranged, wherein the lenses of the second imaging devices (210) can face the product to be detected;

The main surface detection system (100), the middle frame detection system (200), the concave surface detection system (300) and the convex surface detection system (400) are all positioned on the same plane;

The main surface detection system (100), the middle frame detection system (200), the concave surface detection system (300) and the convex surface detection system (400) are integrated into detection equipment, and the conveying system (600) conveys different detection systems, so that the product appearance detection efficiency is improved.

2. The appearance inspection apparatus of claim 1 further comprising a flipping station capable of flipping the product to be inspected, the flipping station being located at one end of the inspection station.

3. The appearance inspection device according to claim 1, characterized in that the conveyor (630) is connected with the conveyor track (640), and that the conveyor (630) comprises an X-movement mechanism, a Y-movement mechanism and an R _Z rotation mechanism, wherein the free end of the R _Z rotation mechanism is provided with a carrying member capable of carrying the product to be inspected.

4. The appearance inspection apparatus according to claim 1, wherein the main surface inspection system (100) includes:

A first light source (120) comprising a first main light source (121) and a plurality of first side light sources (122), the first main light source (121) being configured such that the light sources are perpendicularly illuminated to a main surface of the product to be inspected; a plurality of the first side light sources (122) are configured to be obliquely irradiated with light beams to the main surface of the product to be inspected;

a first imaging device (110) is configured to be located directly above the major surface of the product to be inspected.

5. The appearance inspection apparatus according to claim 1, wherein the concave surface inspection system (300) includes:

A third light source (320) configured to be capable of illuminating perpendicularly to the concave surface of the product to be inspected;

a third imaging device (310);

and the third angle adjusting plate (332) is connected with the third imaging device (310), the third angle adjusting plate (332) is provided with a third arc-shaped groove (3321), and the third imaging device (310) vertically shoots the concave surface of the product to be detected along the movement of the third arc-shaped groove (3321).

6. The appearance inspection apparatus according to claim 1, wherein the convexity inspection system (400) comprises:

A fourth light source (420), which is a coaxial light source, configured to illuminate a plane of the product to be inspected higher than the main surface;

A fourth imaging device (410) with a lens arranged to face a plane of the product to be inspected higher than the main surface.

7. The appearance inspection apparatus according to claim 2, wherein the flipping station is provided with a flipping mechanism (500), the flipping mechanism (500) comprising:

A lifting cylinder (510);

A rotary cylinder (520) connected to the telescopic end of the lifting cylinder (510);

And a clamping cylinder (530) with a housing connected to the telescopic end of the rotary cylinder (520).

8. The appearance inspection apparatus of claim 1, further comprising a purge apparatus for purging dust from the surface of the product to be inspected.

9. A method of detecting the appearance of a product to be detected using the appearance detecting apparatus according to any one of claims 1 to 8, comprising the steps of:

1) Detecting a first main surface at a first detection station, and detecting grooves and/or protruding planes on the first main surface at a second detection station;

2) Turning over the product to be detected;

3) And detecting the second main surface at the first detection station, and detecting the grooves and/or the protruding planes of the second main surface at the second detection station.

10. The method for detecting the appearance of a product to be detected according to claim 9, wherein the step 1) or the step 3) further comprises:

And detecting the middle frame part of the product to be detected at a third detection station.

11. The method of claim 9, further comprising the step of purging the product to be inspected prior to step 1).