CN106254742B

CN106254742B - Double-camera image measuring mechanism

Info

Publication number: CN106254742B
Application number: CN201610781565.7A
Authority: CN
Inventors: 郑贵军; 侯德胜
Original assignee: Suzhou Langkun Automatic Equipment Co Ltd
Current assignee: Suzhou Langkun Automatic Equipment Co Ltd
Priority date: 2016-08-31
Filing date: 2016-08-31
Publication date: 2022-03-08
Anticipated expiration: 2036-08-31
Also published as: CN106254742A

Abstract

The invention discloses a double-camera image measuring mechanism which comprises a rack and an image acquisition mechanism, wherein a single-shaft mechanical arm is arranged on the axis of the rack, the single-shaft mechanical arm is fixed on the rack, a supporting plate is arranged on the single-shaft mechanical arm, the supporting plate is connected with a movable part arranged on the single-shaft mechanical arm, at least two independent image acquisition mechanisms are fixed on the supporting plate, the image acquisition mechanisms are connected with the supporting plate through a switching frame, the single-shaft mechanical arm drives the image acquisition mechanisms to do linear motion, and the image acquisition mechanisms comprise driving mechanisms and camera components. According to the image measuring mechanism provided by the invention, the image acquisition module can be flexibly controlled to the corresponding position through the independent servo driving mechanism, the acquisition positions of the two groups of camera components are automatically adjusted, and rapid and accurate image acquisition and measurement are realized.

Description

Double-camera image measuring mechanism

Technical Field

The invention relates to an image measuring mechanism, in particular to a double-camera image measuring mechanism, and belongs to the field of automation.

Background

The assembly process of the frame and the screen component of the tablet personal computer involves the precision assembly industry, and the conventional production assembly mode generally adopts a specific positioning jig, after the frame and the screen component are manually combined respectively, the panel and the BLU need to be associated under very high precision in the pressing process. The conventional automatic equipment cannot achieve high controllability of precision and has unstable association quality. Due to the rapid change of the consumer electronics market, the product updating period is obviously accelerated, the product is characterized by small batch and multiple specifications, if the market demand is met by using the conventional production mode, a great number of assembly positioning fixtures and jigs are required to be developed to meet the specifications of different products, and the specific fixtures and jigs are longer in development period and high in cost, so that the requirements of large-scale production are not met more and more. Replace manual work through automation equipment, because positioning accuracy is low, location inefficiency is difficult to quick mass production, if adopt double-camera come the image location simultaneously, because product specification changes, the camera is difficult to reach appointed photographing area fast, causes efficiency to reduce.

Disclosure of Invention

In order to solve the technical problems, the invention provides a positioning detection mechanism for unmanned equipment, which can flexibly control an image acquisition module to a corresponding position through an independent servo driving mechanism, automatically adjust the acquisition positions of two groups of camera components and realize rapid and accurate image acquisition and measurement.

In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a double camera image measuring mechanism, includes frame and image acquisition mechanism, be provided with the unipolar manipulator on the frame axis, the unipolar manipulator is fixed in the frame be provided with the backup pad on the unipolar manipulator, the backup pad is in with the setting the movable part of unipolar manipulator is connected be fixed with two at least independent image acquisition mechanisms in the backup pad, image acquisition mechanism through switching frame with the backup pad is connected, unipolar manipulator drive image acquisition mechanism is linear motion, image acquisition mechanism includes actuating mechanism and camera subassembly.

Preferably, actuating mechanism includes guide part and drive division, the guide part include first linear slide rail, with first linear slide rail parallel arrangement's ball screw, ball screw one end is fixed with the belt pulley, the drive division includes driving motor, driving motor with the belt pulley passes through the belt and connects.

Preferably, still including being used for adjusting camera subassembly focus's adjusting device, adjusting device includes accurate lead screw and second linear slide rail, accurate lead screw and second linear slide rail with camera axis direction is unanimous be provided with the camera mounting panel on the second linear slide rail, the camera mounting panel other end with the camera subassembly is connected, adjusting device is still including being used for locking the knob of camera mounting panel.

Preferably, vertically on the camera mounting panel be provided with the CCD camera install on the CCD camera with CCD camera matched with lens group still be provided with the light source fixed plate on the camera mounting panel, be fixed with light source subassembly on the light source fixed plate, the light source subassembly with CCD camera lens orientation is unanimous, CCD lens group axis with light source subassembly center through-hole axis coincidence.

Preferably, the driving motor is a servo motor.

Preferably, the CCD camera is a high-speed camera.

Preferably, the light source assembly is an LED parallel light source.

Compared with the prior art, the invention has the beneficial effects that:

1. because the single-shaft mechanical arm is adopted to drive the camera assembly servo driving mechanism to control the CCD camera to independently complete displacement, the distance and the position matched with the product specification can be quickly switched through software to carry out image positioning, and the switching process is quick and efficient.

2. Because of adopting the modular design, the camera component and the driving mechanism are arranged on the base, the whole mechanism can be flexibly arranged on the equipment and can be applied to other image positioning and measuring equipment.

3. The invention can also adopt two groups of different cameras to collect multi-angle image data of the object to be side, and is also suitable for the fields of other image measurement, image detection and the like.

4. Because the single-shaft mechanical arm is adopted to drive the image acquisition part to acquire images at corresponding positions, the acquisition process is flexible and mobile, each mechanism of the test equipment can be reasonably distributed, and the operation stability of the equipment is improved.

Drawings

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 of the present invention 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 that other drawings can be obtained according to these drawings without creative efforts.

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

FIG. 2 is a schematic view of a portion of the structure of FIG. 1 according to the present invention.

The device comprises a single-shaft manipulator 1, a rack 2, a support plate 3, a belt 4, a servo motor 5, a ball screw 6, a first linear slide rail 7, a second linear slide rail 8, a precision screw rail 9, a switching frame 10, a CCD camera 11, a camera mounting plate 12, a lens group 13, a light source module 14, a light source mounting plate 15 and a belt pulley 16, wherein the single-shaft manipulator is arranged on the rack 1;

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1-2, the present embodiment discloses a dual-camera image measuring mechanism, which includes a frame 2 and an image collecting mechanism, wherein a single-axis manipulator 1 is arranged on the axis of the frame 2, the single-axis manipulator 1 is fixed on the frame 2, a supporting plate 3 is arranged on the single-axis manipulator 1, the supporting plate 3 is connected with the movable portion of the single-axis manipulator 1, two adapter frames 10 are fixed on the supporting plate 3, an image collecting mechanism is arranged on each adapter frame 10, the single-axis manipulator 1 drives the image collecting mechanism to make linear motion, and the image collecting mechanism includes a driving mechanism and a camera component. The driving mechanism comprises a guide part and a driving part, the guide part comprises a first linear slide rail 7 and a ball screw 6 arranged in parallel with the first linear slide rail 7, and one end of the ball screw 6 is fixed with a belt pulley 16; the driving part comprises a driving motor 7, and the driving motor 7 is a servo motor 5. The drive motor 7 and the pulley 16 are connected by a belt 4. The adjusting device for adjusting the focal length of the camera assembly is arranged on the switching frame 10 and comprises a precise screw rod 9 and a second linear slide rail 8, the precise screw rod 9 and the second linear slide rail 8 are consistent with the axis direction of a camera, a camera mounting plate 12 is arranged on the second linear slide rail 8, the other end of the camera mounting plate 12 is connected with the camera assembly, and the adjusting device further comprises a knob for locking the camera mounting plate 12. The precise screw rod 9 can precisely adjust the focal length of the whole camera assembly and then is locked by a knob. The camera assembly comprises a CCD camera 11, the CCD camera 11 is a high-speed camera, the CCD camera 11 is matched with a lens group 13 for use, a light source mounting plate 15 is fixed at the lower end of a camera mounting plate 12 of the lens group 13, a light source module 14 is fixed on the light source mounting plate 15, the light source module 14 and the CCD camera 11 face towards the same direction, the light source module 14 is an LED parallel light source, and the axes of the CCD camera 11 and the lens group 13 coincide with the axis of the light source module 14. The CCD camera 11 captures images of the flat screen assembly from top to bottom at a high speed, determines the offset of an X axis and a Y axis through image measurement, and then sends the offset to the control unit to position and correct the equipment in the next step. The CCD camera 11 can be used for other image acquisition application fields such as image acquisition, image measurement, image recognition, and the two CCD cameras 11 also can select different types, and when the acquisition of multiple images is completed and the use needs image acquisition, the image acquisition mechanism stretches out to the setting position, completes the image acquisition and measurement positioning operation, and after the completion, the image acquisition mechanism withdraws. And transmitting the image measurement result to a control unit, and further performing high-precision fine adjustment on the position of the panel to finish the association process. The servo driving mechanism controls the CCD camera 11 to independently complete displacement, and the distance and the position matched with the product specification are quickly switched through software to carry out image positioning.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A double-camera image measuring mechanism comprises a frame and an image acquisition mechanism, and is characterized in that: the single-shaft mechanical arm is arranged on the axis of the frame, the single-shaft mechanical arm is fixed on the frame, a supporting plate is arranged on the single-shaft mechanical arm, the supporting plate is connected with a movable part arranged on the single-shaft mechanical arm, at least two independent image acquisition mechanisms are fixed on the supporting plate, the image acquisition mechanisms are connected with the supporting plate through a switching frame, the single-shaft mechanical arm drives the image acquisition mechanisms to do linear motion, and each image acquisition mechanism comprises a driving mechanism and a camera assembly; the driving mechanism comprises a guide part and a driving part, the guide part comprises a first linear slide rail and a ball screw arranged in parallel with the first linear slide rail, a belt pulley is fixed at one end of the ball screw, the driving part comprises a driving motor, and the driving motor is connected with the belt pulley through a belt; still including being used for adjusting camera subassembly focus's adjusting device, adjusting device includes accurate lead screw and second linear slide rail, accurate lead screw and second linear slide rail with camera subassembly axis direction is unanimous be provided with the camera mounting panel on the second linear slide rail, the camera mounting panel other end with the camera subassembly is connected, adjusting device is still including being used for locking the knob of camera mounting panel.

2. The mechanism of claim 1, wherein a CCD camera is vertically disposed on the camera mounting plate, a lens assembly fitted with the CCD camera is mounted on the CCD camera, a light source fixing plate is disposed on the camera mounting plate, a light source assembly is fixed on the light source fixing plate, the light source assembly and the CCD camera lens are oriented in the same direction, and the axis of the CCD camera lens assembly coincides with the axis of the central through hole of the light source assembly.

3. The dual-camera image measuring mechanism according to claim 1, wherein: the driving motor is a servo motor.

4. The dual-camera image measuring mechanism according to claim 2, wherein: the CCD camera is a high-speed camera.

5. The dual-camera image measuring mechanism according to claim 2, wherein: the light source component is an LED parallel light source.