CN215066795U

CN215066795U - PCBA test fixture

Info

Publication number: CN215066795U
Application number: CN202120693763.4U
Authority: CN
Inventors: 王峻岭
Original assignee: Wuhan Opway Communication Co ltd
Current assignee: Wuhan Opway Communication Co ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-12-07
Anticipated expiration: 2031-04-06

Abstract

The utility model belongs to the technical field of the PCBA test, a PCBA test fixture is provided, including the testboard, the testboard top is equipped with the roof, and the roof passes through connecting plate and testboard fixed connection, and one side fixed mounting of roof has the camera that is used for carrying out the test point discernment, and the opposite side of roof is equipped with the test head, is used for driving the first actuating mechanism of test head lift, is used for driving the second actuating mechanism that first actuating mechanism position removed and is used for driving second actuating mechanism pivoted third actuating mechanism, third actuating mechanism and roof fixed connection, fixed mounting has the stopper on the testboard, the testboard has position adjustment mechanism with the equal fixed mounting in position that the stopper is adjacent, and stopper and position adjustment mechanism enclose into test area, and test area is located the camera under. The utility model discloses a PCBA test fixture has the characteristics that the suitability is strong.

Description

PCBA test fixture

Technical Field

The utility model relates to a PCBA test technical field, concretely relates to PCBA test fixture.

Background

PCBA is the abbreviation of English Printed Circuit Board Assembly, that is, PCBA is the abbreviation of PCBA when PCB blank Board is processed by SMT for loading or the whole process of DIP plug-in.

The PCBA needs to be tested before leaving the factory, so that a PCBA test fixture is needed. Current PCBA test fixture only tests to the PCBA of a model usually, after changing PCBA, must carry out corresponding change to test assembly, just can satisfy the user demand of other signals, has the poor characteristics of adaptability, consequently, needs improve current test fixture.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a pair of PCBA test fixture has the characteristics that the suitability is strong.

In order to solve the technical problem, the utility model provides a following technical scheme:

a PCBA test fixture comprises a test board, a top plate is arranged above the test board and fixedly connected with the test board through a connecting plate, a camera for identifying test points is fixedly installed on one side of the top plate, a test head, a first driving mechanism for driving the test head to lift, a second driving mechanism for driving the first driving mechanism to move in position and a third driving mechanism for driving the second driving mechanism to rotate are arranged on the other side of the top plate, the third driving mechanism is fixedly connected with the top plate, the testing platform is fixedly provided with a limiting block, the position of the testing platform adjacent to the limiting block is fixedly provided with a position adjusting mechanism, the limiting block and the position adjusting mechanism enclose a testing area, the testing area is located under the camera, and the position adjusting mechanism, the camera, the first driving mechanism, the second driving mechanism and the third driving mechanism are all electrically connected with the PLC.

Further, position control mechanism includes first servo electric jar and position control board, first servo electric jar and testboard fixed connection, and first servo electric jar is connected with the position control board drive, position control board and testboard sliding connection, and first servo electric jar is connected with the PLC controller electricity.

Further, infrared emitter is installed symmetrically to the both sides that the roof is located the camera, fixed mounting has infrared receiver on the position control board, and infrared emitter and infrared receiver all are connected with the PLC controller electricity.

Furthermore, the first driving mechanism is a second servo electric cylinder, the second servo electric cylinder is in driving connection with the second driving mechanism, the second servo electric cylinder is in driving connection with the test head, and the second servo electric cylinder is electrically connected with the PLC.

Furthermore, the second driving mechanism comprises a rotating plate, the rotating plate is in driving connection with the third driving mechanism, a first driving motor and a first lead screw are fixedly mounted on the rotating plate, the first driving motor is in driving connection with the first lead screw, the first driving motor is electrically connected with the PLC, a support plate is fixedly mounted on a nut seat of the first lead screw, a second driving motor and a second lead screw are fixedly mounted on the support plate, the second driving motor is in driving connection with the second lead screw, the second driving motor is electrically connected with the PLC, and a second servo electric cylinder is fixedly connected with the nut seat of the second lead screw.

Further, the third driving mechanism comprises a third driving motor and a rotating shaft, the third driving motor is fixedly connected with the top plate, the rotating shaft is rotatably connected with the top plate, a driving gear is coaxially connected to an output shaft of the third driving motor, a driven gear is coaxially connected to the rotating shaft, the driving gear is meshed with the driven gear, the third driving motor is electrically connected with the PLC, and the rotating plate is fixedly connected with the rotating shaft.

According to the above technical scheme, the beneficial effects of the utility model are that: after the PCBA is arranged in the test area, the position of the PCBA is adjusted through the position adjusting mechanism, so that the PCBA is just opposite to the lower part of the camera, the test point on the PCBA is identified through the camera, the identification result is sent to the PLC controller, the PLC controller controls the third driving mechanism to drive the second driving mechanism to rotate, the first driving mechanism and the test head are located above the PCBA, the PLC controller controls the second driving mechanism to adjust the position of the first driving mechanism and the test head, so that the test head is aligned with the test point on the PCBA, the test head is driven to descend through the first driving mechanism to test the test head, after the test is finished, the PLC controller controls the third driving mechanism to drive the second driving mechanism to rotate, the first driving mechanism and the test head are moved to one side far away from the camera, the identification of the test point position of other PCBAs by the camera is not influenced, the above processes realize the detection of the test point on the PCBA through the camera, the position of the test head is adjusted by matching the first driving mechanism, the second driving mechanism and the third driving mechanism, so that the test head can detect the test point.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

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

fig. 2 is a left side view of the present invention;

fig. 3 is a right side view of the present invention.

Reference numerals:

1-a test bench; 2-a top plate; 3-connecting the plates;

11-a test area; 12-a limiting block; 13-a first servo electric cylinder; 14-position adjusting plate; 15-an infrared receiver; 21-a camera; 22-an infrared emitter; 23-a third drive motor; 24-a rotating shaft; 25-a rotating plate; 26-a first drive motor; 27-a first screw rod; 28-a support plate;

231-a drive gear; 241-a driven gear; 281-a second drive motor; 282-second lead screw; 283-a second servo electric cylinder; 284 — test head.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1-3, the PCBA testing jig provided by this embodiment includes a testing table 1, a top plate 2 is disposed above the testing table 1, the top plate 2 is fixedly connected to the testing table 1 through a connecting plate 3, a camera 21 for identifying a testing point is fixedly mounted on one side of the top plate 2, a testing head 284 is disposed on the other side of the top plate 2, a first driving mechanism for driving the testing head 284 to ascend and descend, a second driving mechanism for driving the first driving mechanism to move in position, and a third driving mechanism for driving the second driving mechanism to rotate, the third driving mechanism is fixedly connected to the top plate 2, a limiting block 12 is fixedly mounted on the testing table 1, position adjusting mechanisms are fixedly mounted at positions of the testing table 1 adjacent to the limiting block 12, the limiting block 12 and the position adjusting mechanisms enclose a testing area 11, the testing area 11 is located under the camera 21, the position adjusting mechanism, the camera 21, the first driving mechanism, the second driving mechanism and the third driving mechanism are all electrically connected with the PLC. The test head 284 is connected to test equipment.

In practical use, after the PCBA is placed in the test area 11, the position of the PCBA is adjusted by the position adjusting mechanism, so that the PCBA is directly opposite to the lower part of the camera 21, the test point on the PCBA is identified by the camera 21, and the identification result is sent to the PLC controller, the PLC controller controls the third driving mechanism to drive the second driving mechanism to rotate, so that the first driving mechanism and the test head 284 are positioned above the PCBA, the PLC controller controls the second driving mechanism to adjust the positions of the first driving mechanism and the test head 284, so that the test head 284 is aligned with the test point on the PCBA, the first driving mechanism drives the test head 284 to descend to test the test head 284, after the test is completed, the PLC controller controls the third driving mechanism to drive the second driving mechanism to rotate, so that the first driving mechanism and the test head 284 move to the side far away from the camera 21, and the identification of the test point positions of other PCBA by the camera 21 is not affected, in the above process, the detection of the test point on the PCBA is realized through the camera 21, and the position of the test head 284 is adjusted through the cooperation of the first driving mechanism, the second driving mechanism and the third driving mechanism, so that the test of the test point by the test head 284 is realized.

It should be noted that the method for identifying the test points is the prior art, and therefore is not described in detail.

In this embodiment, the position adjustment mechanism includes first servo electric cylinder 13 and position adjustment plate 14, and first servo electric cylinder 13 and test bench 1 fixed connection, first servo electric cylinder 13 and position adjustment plate 14 drive connection, and position adjustment plate 14 and test bench 1 sliding connection, first servo electric cylinder 13 are connected with the PLC controller electricity.

In actual use, when the PCBA is placed in the test area 11, the position adjusting plate 14 is controlled by the first servo cylinder 13 to move, so that the PCBA is pushed to move by the position adjusting plate 14, and the purpose of adjusting the position of the PCBA is achieved.

In this embodiment, infrared emitters 22 are symmetrically installed on two sides of the top plate 2, which are located on the camera 21, an infrared receiver 15 is fixedly installed on the position adjusting plate 14, and both the infrared emitters 22 and the infrared receiver 15 are electrically connected with the PLC controller.

In actual use, the PLC controller controls the infrared emitter 22 to operate, when the position adjusting plate 14 moves to a position below the infrared emitter 22, the infrared receiver 15 can receive a transmission signal of the infrared emitter 22, which indicates that the PCBA moves to a predetermined position, and the PLC controller controls the first servo cylinder 13 to stop operating.

In this embodiment, the first driving mechanism is a second servo electric cylinder 283, the second servo electric cylinder 283 is in driving connection with the second driving mechanism, the second servo electric cylinder 283 is in driving connection with the test head 284, and the second servo electric cylinder 283 is electrically connected with the PLC controller.

In practical use, the PLC controls the second servo electric cylinder 283 to stretch and drive the test head 284 to lift, so as to test the PCBA test point.

In this embodiment, the second driving mechanism includes a rotating plate 25, the rotating plate 25 is in driving connection with the third driving mechanism, a first driving motor 26 and a first lead screw 27 are fixedly installed on the rotating plate 25, the first driving motor 26 is in driving connection with the first lead screw 27, the first driving motor 26 is electrically connected with the PLC controller, a supporting plate 28 is fixedly installed on a nut seat of the first lead screw 27, a second driving motor 281 and a second lead screw 282 are fixedly installed on the supporting plate 28, the second driving motor 281 is in driving connection with the second lead screw 282, the second driving motor 281 is electrically connected with the PLC controller, and a second servo electric cylinder 283 is fixedly connected with the nut seat of the second lead screw 282.

In practical use, the installation position of the first lead screw 27 is perpendicular to the installation position of the second lead screw 282, the PLC controller controls the first driving motor 26 to work to drive the nut seat on the first lead screw 27 to move, so as to realize the position movement of the first driving mechanism and the test head 284 along the direction of the first lead screw 27, the PLC controller controls the second driving motor 281 to work to drive the nut seat on the second lead screw 282 to move, so as to realize the movement of the second driving mechanism and the test head 284 along the direction of the second lead screw 282, and thus, the purpose of adjusting the positions of the first driving mechanism and the test head 284 is achieved.

In this embodiment, the third driving mechanism includes a third driving motor 23 and a rotating shaft 24, the third driving motor 23 is fixedly connected to the top plate 2, the rotating shaft 24 is rotatably connected to the top plate 2, a driving gear 231 is coaxially connected to an output shaft of the third driving motor 23, a driven gear 241 is coaxially connected to the rotating shaft 24, the driving gear 231 is engaged with the driven gear 241, the third driving motor 23 is electrically connected to the PLC controller, and the rotating plate 25 is fixedly connected to the rotating shaft 24.

In actual use, the third driving motor 23 is controlled to rotate by the PLC controller, so as to drive the driving gear 231 to rotate, the driving gear 231 rotates to drive the driven gear 241 to rotate, the driven gear 241 rotates to drive the rotating shaft 24 to rotate, the rotating shaft 24 rotates to drive the rotating plate 25 to rotate, and the rotating plate 25 rotates to drive the testing head 284 to rotate.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a PCBA test fixture, includes testboard (1), its characterized in that: a top plate (2) is arranged above the test board (1), the top plate (2) is fixedly connected with the test board (1) through a connecting plate (3), a camera (21) for identifying test points is fixedly installed on one side of the top plate (2), a test head (284) is arranged on the other side of the top plate (2), a first driving mechanism for driving the test head (284) to ascend and descend, a second driving mechanism for driving the first driving mechanism to move in position and a third driving mechanism for driving the second driving mechanism to rotate are fixedly connected with the top plate (2), a limiting block (12) is fixedly installed on the test board (1), position adjusting mechanisms are fixedly installed at positions of the test board (1) adjacent to the limiting block (12), the limiting block (12) and the position adjusting mechanisms enclose a test area (11), and the test area (11) is located right below the camera (21), the position adjusting mechanism, the camera (21), the first driving mechanism, the second driving mechanism and the third driving mechanism are all electrically connected with the PLC.

2. The PCBA test fixture of claim 1, wherein: the position adjusting mechanism comprises a first servo electric cylinder (13) and a position adjusting plate (14), the first servo electric cylinder (13) is fixedly connected with the test bench (1), the first servo electric cylinder (13) is in driving connection with the position adjusting plate (14), the position adjusting plate (14) is in sliding connection with the test bench (1), and the first servo electric cylinder (13) is electrically connected with the PLC.

3. The PCBA test fixture of claim 2, wherein: roof (2) are located the bilateral symmetry of camera (21) and install infrared transmitter (22), fixed mounting has infrared receiver (15) on position adjusting plate (14), and infrared transmitter (22) and infrared receiver (15) all are connected with the PLC controller electricity.

4. The PCBA test fixture of claim 1, wherein: the first driving mechanism is a second servo electric cylinder (283), the second servo electric cylinder (283) is in driving connection with the second driving mechanism, the second servo electric cylinder (283) is in driving connection with the test head (284), and the second servo electric cylinder (283) is electrically connected with the PLC.

5. The PCBA test fixture of claim 4, wherein: the second driving mechanism comprises a rotating plate (25), the rotating plate (25) is in driving connection with a third driving mechanism, a first driving motor (26) and a first screw rod (27) are fixedly installed on the rotating plate (25), the first driving motor (26) is in driving connection with the first screw rod (27), the first driving motor (26) is electrically connected with the PLC, a support plate (28) is fixedly installed on a nut seat of the first screw rod (27), a second driving motor (281) and a second screw rod (282) are fixedly installed on the support plate (28), the second driving motor (281) is in driving connection with the second screw rod (282), the second driving motor (281) is electrically connected with the PLC, and a second servo electric cylinder (283) is fixedly connected with the nut seat of the second screw rod (282).

6. The PCBA test fixture of claim 5, wherein: the third driving mechanism comprises a third driving motor (23) and a rotating shaft (24), the third driving motor (23) is fixedly connected with the top plate (2), the rotating shaft (24) is rotatably connected with the top plate (2), a driving gear (231) is coaxially connected with an output shaft of the third driving motor (23), a driven gear (241) is coaxially connected with the rotating shaft (24), the driving gear (231) is meshed with the driven gear (241), the third driving motor (23) is electrically connected with the PLC, and the rotating plate (25) is fixedly connected with the rotating shaft (24).