CN212808093U

CN212808093U - Line scanning detecting unit

Info

Publication number: CN212808093U
Application number: CN202021835037.3U
Authority: CN
Inventors: 万英伟; 沈浩; 尹建群; 张东东; 宋培华
Original assignee: Lei Ao Vision Technology Dongguan Co ltd
Current assignee: Lei Ao Vision Technology Dongguan Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-03-26
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a line scanning detection unit, which comprises a detection table with a detection station A and a jig which is movably arranged on the detection table and used for placing a product to be detected, wherein when the detection table is positioned at the detection station A, the detection table can slide horizontally and linearly relative to the detection table, and the two ends of the sliding stroke are respectively an initial position and a complete detection position; the CCD line scanning visual detection assembly is arranged at the detection station A and is used for scanning a product to be detected placed on the jig at the detection station A, and the sliding direction of the jig is adapted to the scanning line position of the CCD line scanning visual detection assembly; and the elastic resetting structure is used for resetting the jig from the inspection completion position to the initial position. Adopt the linear drive mechanism cooperation elasticity of non-formula of linking firmly to reset the structure, realize waiting to examine the comprehensive line scanning of examining the product on the tool, do not hinder the normal rotation of tool or the straight line circulation simultaneously and switch the station, be favorable to improving the efficiency of whole detection line or production line, novel structure, the implementation of being convenient for.

Description

Line scanning detecting unit

Technical Field

The utility model relates to a visual scanning detects technical field, concretely relates to line scanning detecting element.

Background

With the continuous development of manufacturing technology, the technology of utilizing the line scanning mode to carry out the defect detection to the object surface is widely popularized and utilized, and in the detection process, for can realizing the full coverage detection to the object surface, relative movement can take place between scanning module and the year thing module usually, ensures that the scanning camera's scan line can accomplish full surface scanning.

However, when some precise components are detected, the detection environment vibration is often required to be small, and at this time, if a mode of moving the scanning camera is still adopted, the camera is inevitably shaken to be large, so that the detection quality is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a line scanning detecting element can improve and detect the precision, satisfies objective table multistation switching demand simultaneously, improves the whole work efficiency of detection line etc..

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

a line scanning detection unit is characterized by comprising:

the detection table is provided with a detection station A;

the jig is movably arranged on the detection table, is used for placing a product to be detected, can horizontally and linearly slide relative to the detection table when being positioned at a detection station A, and has an initial position and a finished detection position at two ends of a sliding stroke;

the CCD line scanning visual detection assembly is used for scanning a product to be detected placed on the jig at a detection station A;

the linear driving mechanism is used for driving the jig to slide from the initial position to the inspection completion position when the jig is positioned at the detection station A, and after the jig reaches the inspection completion position, the jig is separated from the jig and reset, and the sliding direction of the jig is adapted to the scanning line position of the CCD line scanning visual detection assembly;

and the elastic resetting structure is used for enabling the jig to return to the initial position from the detection completion position.

Scheme more than adopting, the linear drive mechanism drive tool that adopts the non-formula of linking firmly removes, makes scanning detection subassembly accomplish the whole surface scanning of waiting to examine the product, then makes the tool reset through elasticity reset structure, and actuating mechanism and tool do not have the lug connection structure, ensure not hindering the normal switching or the circulation of tool, are favorable to improving the efficiency of whole detection line, satisfy multiple on-line measuring occasion.

Preferably, the method comprises the following steps: CCD line scanning visual detection subassembly includes supports line scanning camera and the line scanning light source in examining test table top through the stand, the scanning line of line scanning camera is located the inboard of tool initial position, linear drive mechanism sets up on examining test table to be located the initial position outside of tool, be used for promoting the tool and slide inwards. The scanning detection assembly and the linear driving mechanism are arranged in the above mode, so that the occupation of the inner side space of the jig is reduced, and the jig is ensured to have a good circulation switching space.

Preferably, the method comprises the following steps: the linear driving mechanism comprises a push rod and a lead screw motor, the push rod is horizontally arranged, the lead screw motor is used for driving the push rod to move linearly inwards, when the jig is located at the detection station A, the push rod is opposite to the outer side of the jig, the elastic reset structure is a reset spring located on the inner side of the jig, and two ends of the reset spring are respectively used for acting on the jig and the detection platform. By adopting the scheme, the screw rod motor drives the push rod to move forwards, so that the pushing stability of the push rod is ensured, and the return spring is adopted as the elastic return structure, so that the implementation is facilitated, and the economic cost is reduced.

Preferably, the method comprises the following steps: the fixture comprises a detection table, a fixture and a reset spring, wherein the detection table is provided with a mounting seat opposite to the fixture, the detection table is provided with a guide rail A in sliding fit with the fixture, the mounting seat is provided with a guide rod parallel to the guide rail A and opposite to the inner side of the fixture, the fixture is movably sleeved on the guide rod, the reset spring is sleeved on the guide rod, and two ends of the reset spring are respectively abutted against the fixture and the mounting seat. Scheme more than adopting, through guide rail A and guide arm cooperation, be favorable to improving the stability when tool horizontal slip, be favorable to improving scanning detection precision, the guide arm provides support for reset spring's installation simultaneously, prevents that reset spring from crumpling, is favorable to improving its life.

Preferably, the method comprises the following steps: the outer end of the guide rod is provided with a stop head. By adopting the scheme, the fixture is prevented from being separated from the guide rod, and the operation reliability of the fixture is ensured.

Preferably, the method comprises the following steps: the lead screw motor sets up inwards along the slip direction level of tool, has the nut seat rather than matching on the lead screw of lead screw motor, and its both sides have the curb plate of symmetry setting, have the guide rail B who sets up along tool slip direction on the curb plate, guide rail B has rather than sliding fit's promotion piece, should promote piece and nut seat fixed connection, the push rod sets firmly on this promotion piece. By adopting the scheme, the guide rail B is matched with the pushing block, so that the moving stability of the push rod is greatly improved, and the vibration generated by pushing is favorably further reduced.

Preferably, the method comprises the following steps: the jig is a vacuum adsorption type jig. By adopting the scheme, the stability of the product to be detected on the jig is ensured, and offset dislocation and the like are reduced.

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

adopt the utility model provides a pair of line scanning detecting element adopts the straight line actuating mechanism cooperation elasticity reset structure of non-formula of linking firmly, realizes waiting to examine the comprehensive line scanning of examining the product on the tool, does not hinder the normal rotation of tool or the straight line circulation simultaneously and switches the station, is favorable to improving the efficiency of whole detection line or production line, novel structure, the implementation of being convenient for.

Drawings

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

FIG. 2 is a partial enlarged view of the present invention;

fig. 3 is a schematic view of the installation of the present invention;

fig. 4 is a schematic view of the usage state of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

Referring to fig. 1 and 4, a line scanning detection unit includes a detection station 100 and a fixture 710, wherein the detection station 100 is provided with a detection station a160 for completing a scanning detection operation, the detection station a160 is provided with a CCD line scanning visual detection assembly 600, as shown in the figure, the CCD line scanning visual detection assembly 600 is supported above the detection station 100 through a column 630, and mainly includes a line scanning camera 610 disposed downward for cleaning and a line scanning light source 620 disposed right above the detection station a 160.

Tool 710 is mainly used for placing the product of waiting to examine, and detect platform 100 activity setting relatively, it is on detecting system's circulation line, can circulate other stations through supporting structure, meanwhile, when tool 710 is in detection station A160, it can also detect platform 100 horizontal slip relatively, and its slip direction suits with the scanning line of scanning camera 610, promptly in its slip stroke, and can make the product surface of waiting to examine that is located tool 710 all scanned by scanning camera 610, in addition its slip stroke both ends are initial position and the position of examining completely respectively, the distance of the two can be set for according to the size of waiting to examine the product.

The jig 710 is further provided with a linear driving mechanism 720 and elastic reset, the linear driving mechanism 720 plays a power role when the jig 710 is at the detection station a160, i.e. the jig 710 at this time is driven to slide from the initial position to the complete detection position, it should be noted that in the present application, a relatively independent driving mode is adopted between the linear driving mechanism 720 and the jig 710, after the jig 710 slides to the complete detection position, the linear driving mechanism 720 can be separated from the jig 710 to reset, and the jig 710 can be reset from the complete detection position to the initial position only by the elastic reset structure, and in the reset process, the jig 710 can be switched to other stations along a circulation line, which is beneficial to shortening the waiting reset time of the jig 710.

The sliding direction of the fixture 710 is adapted to the scanning line of the scanning camera 610, that is, if the scanning line of the scanning camera 610 is located inside the fixture 710, the fixture 710 needs to slide inward, and if the scanning line is located outside the fixture 710, the fixture 710 needs to slide inward.

In this embodiment, the linear driving mechanism 720 mainly includes a push rod 721, and a screw rod motor 722 for driving the push rod 721 to move linearly inward, when the jig 710 is located at the detection station a160, the push rod 721 faces the outside of the jig 710, the elastic restoring structure is a restoring spring 760 located inside the initial position of the jig 710, and two ends of the restoring spring 760 act on the jig 710 and the detection table 100, respectively.

The specific structure is as shown in the figure, the detection table 100 is provided with a guide rail A770 and an installation base 730 which are movably arranged relative to the detection table, in the practical implementation process, the guide rail A770, the installation base 730 and the jig 710 are arranged on the same circulation line and can adapt to the movement of the circulation line, the guide rail A770 is parallel to the sliding direction of the jig 710, the jig 710 is in sliding fit with the guide rail A770 through a sliding block, the installation base 730, the initial position and the finished position are on the same straight line and are located on the inner side of the finished position, a guide rod 750 which is opposite to the jig 710 is arranged on the installation base, the jig 710 and the guide rail A770 are in sliding fit and are movably sleeved on the guide rod 750, in addition, two guide rails A770 are arranged, the guide rods 750 are located above the guide rail A770 and are distributed in a shape like a Chinese character' pin.

The return spring 760 is sleeved on the guide rod 750, and both ends of the return spring are respectively abutted against the jig 710 and the mounting seat 730, so as to prevent the jig 710 from falling off from the guide rod 750 during the sliding process, a stop head 751 is arranged at the end part of the outer end of the guide rod 750.

On the basis, in the present embodiment, the transmission structure of the push rod 721 is optimized to improve the pushing stability, as shown in the figure, the lead screw motor 722 is horizontally arranged along the sliding direction of the jig 710, the lead screw of the lead screw motor 722 is provided with the nut seat 723 matched with the lead screw, the lead screw motor 722 is positioned between two guide rails a770, two sides of the lead screw motor 722 are provided with the fixedly arranged side plates 724, the top of the side plate 724 is provided with the guide rail B725 arranged in parallel with the guide rail a770, the guide rail B725 is provided with the pushing block 726 matched with the guide rail B in a sliding manner, the pushing block 726 is fixedly connected with the nut seat 723, the push rod 721 is fixedly arranged on the pushing block 726, when the lead screw motor 722 works to drive the push rod 721 to move inwards, the push rod 712 pushes the jig 710 inwards, and compresses the return spring 760, and the reaction force of the return spring 760 can make the jig 710, the push rod 721 is rapidly retracted under the action of the lead screw motor 722, the jig 710 is restored to the initial position under the action of the return spring 760, and the switching between the stations of the jig 710 on the flow line is not hindered, so that the waiting time is reduced, and the working efficiency of the whole detection line is improved.

Tool 710 adopts vacuum adsorption formula tool in this application to vacuum adsorption's mode keeps waiting to examine the stability of examining the product on tool 710, reduces the vibration, is favorable to further improving and detects the precision.

Referring to fig. 1 to 4, a line scanning detection unit is applied to a mobile phone iron frame appearance detection system, wherein a four-station index plate 700 is adopted as a main station circulation structure, as shown in the figure, a good product material taking station 150, a defective product material taking station 170 and a detection station B140 are arranged on a detection table 100 and are sequentially distributed in a circumferential array with a detection station a160, wherein a CCD vision assembly 500 is arranged on the detection station B140, a good product manipulator 300 and a defective product manipulator 171 are respectively arranged on the detection table 100 at positions corresponding to the good product material taking station 150 and the defective product material taking station 170, the good product manipulator 300 is used for grabbing and placing a good product at the station to a good product assembly line, and the defective product manipulator 171 is used for grabbing and placing a defective product at the station to a defective product storage box so as to perform centralized and unified processing.

The four-station index plate 700 is rotatably disposed between the four stations, the detection table 100 is provided with a servo motor 780 for driving the four-station index plate 700 to horizontally rotate, the jigs 710 are disposed on the four-station index plate 700, when the four-station index plate 700 rotates, the jigs 710 can be driven to sequentially rotate between the four stations, and in order to improve the detection efficiency, in particular, the four jigs 710 can be disposed on the four-station index plate 700, and the four jigs 710 are also distributed in a cylindrical array, so that when the four-station index plate 700 stops rotating, each jig 710 corresponds to one station to perform corresponding processing.

In order to facilitate the circulation of the jigs 710, the guide rail a770 and the mounting seat 730 are both disposed on the four-station index plate 700 and can move together with the four-station index plate 700, and the four jigs 710 share one square mounting seat 730.

In the working process, the mobile phone iron frame to be detected is placed on the fixture 710, the position of the mobile phone iron frame is ensured to be fixed by means of vacuum adsorption, the fixture 710 is at the initial position on the linear sliding stroke under the action of the return spring 760, when the fixture 710 rotates to the detection station A160 along with the four-station index plate 700, the lead screw motor 722 works and pushes the push rod 721 forwards, the corresponding fixture 710 compresses the return spring 760 to move towards the detection completion position, in the process, the CCD line scanning visual detection assembly 600 works, so that the scanning detection on the surface of the iron frame to be detected is completed, after the scanning detection is completed, the lead screw motor 722 drives the push rod 721 to rapidly reset, the four-station index plate 700 can rotate immediately, the fixture 710 with the detection completed by the product rotates towards the next station without being limited by the linear driving mechanism 720, and in the rotating process, the fixture 710 rapidly resets to the initial position under the action of the return spring 760, so that the equipment of the next station can be correspondingly operated.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. A line scan detection unit, comprising:

the inspection table (100) is provided with an inspection station A (160);

the jig (710) is movably arranged on the detection table (100) and used for placing a product to be detected, and when the jig is positioned at the detection station A (160), the jig can horizontally and linearly slide relative to the detection table (100), and the two ends of the sliding stroke are respectively an initial position and a finished detection position;

the CCD line scanning visual detection assembly (600) is used for scanning a product to be detected placed on the jig (710) at a detection station A (160);

the linear driving mechanism (720) is used for driving the jig (710) to slide from an initial position to an inspection completion position when the jig (710) is positioned at the inspection station A (160), the jig (710) is separated from the jig (710) and reset after reaching the inspection completion position, and the sliding direction of the jig (710) is adapted to the scanning line position of the CCD line scanning visual detection assembly (600);

and the elastic resetting structure is used for returning the jig (710) to the initial position from the inspection completion position.

2. The line scan detection unit of claim 1, wherein: CCD line scanning visual inspection subassembly (600) include support line scanning camera (610) and line scanning light source (620) in examining test table (100) top through stand (630), the scanning line of line scanning camera (610) is located the inboard of tool (710) initial position, linear drive mechanism (720) set up on examining test table (100) to be located the initial position outside of tool (710), be used for promoting tool (710) and slide inwards.

3. The line scan detection unit of claim 2, wherein: the linear driving mechanism (720) comprises a push rod (721) which is horizontally arranged and a screw rod motor (722) which is used for driving the push rod (721) to linearly move inwards, when the jig (710) is positioned at the detection station A (160), the push rod (721) is opposite to the outer side of the jig (710), the elastic reset structure is a reset spring (760) which is positioned at the inner side of the jig (710), and two ends of the reset spring (760) are respectively acted on the jig (710) and the detection table (100).

4. A line scan detection unit according to claim 3, wherein: the position of just facing tool (710) on detecting platform (100) is equipped with mount pad (730), detect and have on platform (100) with tool (710) sliding fit's guide rail A (770), have on mount pad (730) and be parallel with guide rail A (770) and just to guide arm (750) of tool (710) inboard, tool (710) loop is on guide arm (750), reset spring (760) cover is established on guide arm (750), and its both ends are supported tightly with tool (710) and mount pad (730) respectively.

5. The line scan detection unit of claim 4, wherein: the outer end of the guide rod (750) is provided with a stop head (751).

6. A line scan detection unit according to claim 3 or 4, wherein: the lead screw motor (722) is horizontally and inwards arranged along the sliding direction of the jig (710), a nut seat (723) matched with the lead screw motor (722) is arranged on the lead screw of the lead screw motor (722), side plates (724) symmetrically arranged are arranged on two sides of the lead screw, a guide rail B (725) arranged along the sliding direction of the jig (710) is arranged on each side plate (724), the guide rail B (725) is provided with a pushing block (726) in sliding fit with the guide rail B, the pushing block (726) is fixedly connected with the nut seat (723), and the push rod (721) is fixedly arranged on the pushing block (726).

7. A line scan detection unit according to any one of claims 1 to 4, wherein: the jig (710) is a vacuum adsorption type jig.