Circuit board testing equipment

Abstract

The utility model relates to a circuit board testing device, comprising a workbench, the workbench is provided with a feeding mechanism, a transfer mechanism, a detection mechanism, a defective product recovery box and a storage box, the transfer mechanism is arranged between the feeding mechanism and the detection mechanism, the detection mechanism comprises two symmetrically arranged detection assemblies, and the detection assemblies are arranged on the workbench. The detection assembly comprises a horizontal driving mechanism, a carrier assembly, a fixing frame, a clamping assembly, a testing assembly, a first supporting frame and a camera assembly, the horizontal driving mechanism, the fixing frame and the first supporting frame are installed on the workbench, the driving end of the horizontal driving mechanism is in sliding fit with the carrier assembly, and the carrier assembly is in sliding fit with the workbench; the clamping assembly and the testing assembly are installed on the fixing frame, and the camera assembly is installed on the first supporting frame. According to the test equipment, the automatic test requirement is met, and the test efficiency is also improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board testing equipment technical field especially relates to a circuit board testing equipment. BACKGROUND

[0002] PCB board as core electronic component, for ensuring its reliability, needs to carry out the detection of various performance parameters in the production process. The circuit board testing equipment in the prior art is usually only for testing single PCB board, and the testing equipment is not only inefficient, but also cannot meet the demand of automatic testing. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem to provide a kind of circuit board testing equipment, the testing equipment not only realizes the demand of automatic testing, also improves testing efficiency.

[0004] The utility model solves the technical problem employing technical scheme: a kind of circuit board testing equipment, including workbench, workbench is provided with for the tray is carried out the feeding and discharging of feeding mechanism, for the product is moved and is transferred to transfer mechanism, for the product is tested to detection mechanism, for placing defective product defective product recycling box and for the product is temporarily stored to storage box, the transfer mechanism is located between feeding mechanism and detection mechanism.

[0005] The detection mechanism includes two symmetrical detection components, and the detection component includes a horizontal drive mechanism, a carrier assembly for placing products, a fixed frame, a clamping assembly for clamping the products on the transfer mechanism, a test assembly for testing the products on the carrier assembly, a first support frame and a camera assembly for photographing and scanning the codes of the products on the carrier assembly, the horizontal drive mechanism, the fixed frame and the first support frame are respectively installed on the workbench, the drive end of the horizontal drive mechanism is connected with the carrier assembly, and the carrier assembly is slidingly connected with the workbench.

[0006] In one embodiment, the feeding mechanism of the circuit board testing equipment includes a feeding assembly, a discharging assembly and a clamping mechanism, the feeding assembly includes a feeding conveying line, a first lifting mechanism and two feeding cylinders symmetrically arranged for lifting the tray on the feeding trolley, the discharging assembly includes a discharging conveying line, a second lifting mechanism and two discharging cylinders symmetrically arranged for moving the tray to the discharging trolley, the first lifting mechanism is used for lifting the tray on the feeding conveying line to the feeding station, the second lifting mechanism is used for driving the tray on the discharging station to descend to the discharging conveying line, and the clamping mechanism is used for clamping and moving the empty tray on the feeding station to the discharging station.

[0007] In one of the embodiments, the clamping mechanism of the circuit board testing device comprises a second support frame, a horizontally moving first linear module, a first connecting frame, a first cylinder moving up and down, and a clamping assembly. The second support frame is installed on the workbench. The first linear module is installed on the second support frame. The driving end of the first linear module is connected with the first connecting frame. The first cylinder is installed on the first connecting frame. The driving end of the first cylinder is connected with the clamping assembly. The clamping assembly is connected with the first connecting frame through a guide assembly. The clamping assembly comprises two symmetrically arranged second cylinders and two symmetrically arranged third clamping plates. The driving ends of the two second cylinders are respectively connected with the two third clamping plates. The two second cylinders are used to drive the two third clamping plates to move relatively to clamp the tray.

[0008] In one of the embodiments, the transfer mechanism of the circuit board testing device comprises a multi-axis mechanical arm and a clamping mechanism. The clamping mechanism comprises a fixed plate and a plurality of clamping jaw cylinders used to clamp the products in the tray. The plurality of clamping jaw cylinders are adjustably connected with the fixed plate. The driving end of the multi-axis mechanical arm is connected with the fixed plate.

[0009] In one of the embodiments, the carrier assembly of the circuit board testing device comprises a base and a plurality of carriers. The base is slidingly fitted with the workbench. The plurality of carriers are sequentially and spacedly installed on the base.

[0010] In one of the embodiments, the clamping assembly of the circuit board testing device comprises a third cylinder, a second connecting frame, a rotary motor, a plurality of first clamping plates, and a plurality of second clamping plates. The third cylinder is installed on the fixed frame. The driving end of the third cylinder is connected with the second connecting frame. The rotary motor is installed on one end of the second connecting frame. The driving end of the rotary motor is connected with the plurality of first clamping plates and the plurality of second clamping plates through a connecting assembly. The rotary motor is used to drive the connecting assembly to drive the first clamping plates and the second clamping plates to move relatively to clamp the products.

[0011] In one of the embodiments, the testing assembly of the circuit board testing device comprises an electric cylinder, a third connecting frame, and a plurality of testing needle assemblies used to test the products on the carrier assembly. The electric cylinder is installed on the fixed frame. The driving end of the electric cylinder is connected with the third connecting frame. The plurality of testing needle assemblies are sequentially and spacedly installed on the third connecting frame.

[0012] In one of the embodiments, the camera assembly of the circuit board testing device comprises a camera and a light source. The camera and the light source are respectively installed on the first support frame. The light source is located below the camera.

[0013] The beneficial effects of the present application are as follows:

[0014] The application provides a circuit board testing device. The testing device is provided with a feeding mechanism for feeding a full tray of products, a transfer mechanism for transferring the products to the top of a detection mechanism, a clamping assembly of the detection mechanism for clamping and lowering the products to a carrier assembly, a testing assembly for testing the products, and a transfer mechanism for transferring the good products to a discharging station or the defective products to a defective product recycling box. The circuit board testing device realizes automatic functional testing of PCBs and improves testing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a schematic view of a circuit board testing device according to an embodiment of the application;

[0016] Figure 2 FIG. 2 is a schematic view of a feeding mechanism of the circuit board testing device according to an embodiment of the application;

[0017] Figure 3 FIG. 3 is a schematic view of a transfer mechanism of the circuit board testing device according to an embodiment of the application;

[0018] Figure 4 FIG. 4 is a schematic view of a detection mechanism of the circuit board testing device according to an embodiment of the application;

[0019] Figure 5 FIG. 5 is a schematic view of a clamping assembly and a testing assembly of the circuit board testing device according to an embodiment of the application;

[0020] Wherein:

[0021] 1, workbench; 2, feeding mechanism; 3, transfer mechanism; 4, detection mechanism; 5, defective product recycling box; 6, storage box; 21, feeding assembly; 22, discharging assembly; 23, clamping mechanism; 24, feeding trolley; 25, discharging trolley; 26, tray; 211, feeding conveying line; 212, first lifting mechanism; 213, feeding cylinder; 221, discharging conveying line; 222, second lifting mechanism; 223, discharging cylinder; 231, second support frame; 232, first linear module; 233, first connecting frame; 234, first cylinder; 235, clamping assembly; 100, second cylinder; 101, third clamping plate; 31, multi-axis mechanical arm; 32, clamping mechanism; 321, fixed plate; 322, clamping jaw cylinder; 41, horizontal driving mechanism; 42, carrier assembly; 43, fixed frame; 44, clamping assembly; 45, testing assembly; 46, first support frame; 47, camera assembly; 421, base; 422, carrier; 441, third cylinder; 442, second connecting frame; 443, rotary motor; 444, first clamping plate; 445, second clamping plate; 446, connecting assembly; 451, electric cylinder; 452, third connecting frame; 453, testing needle assembly; 471, camera; 472, light source. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, characteristics and advantages of the present application more apparent, obvious and understandable, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0023] As shown in Figure 1 The embodiments of the present application provide a circuit board testing device, which comprises a workbench 1, the workbench 1 is provided with a feeding mechanism 2 for feeding and discharging a tray 26, a transfer mechanism 3 for transferring products, a detection mechanism 4 for testing the products, a defective product recycling box 5 for placing defective products and a storage box 6 for temporarily storing the products, and the transfer mechanism 3 is located between the feeding mechanism 2 and the detection mechanism 4.

[0024] The detection mechanism 4 comprises two symmetrical detection assemblies, each detection assembly comprises a horizontal driving mechanism 41, a carrier assembly 42 for placing the products, a fixing frame 43, a clamping assembly 44 for clamping the products on the transfer mechanism 3, a testing assembly 45 for testing the products on the carrier assembly 42, a first supporting frame 46 and a camera assembly 47 for photographing and scanning the code of the products on the carrier assembly 42, the horizontal driving mechanism 41, the fixing frame 43 and the first supporting frame 46 are respectively installed on the workbench 1, the driving end of the horizontal driving mechanism 41 is connected with the carrier assembly 42, the carrier assembly 42 is in sliding fit with the workbench 1, the clamping assembly 44 and the testing assembly 45 are installed on the fixing frame 43, and the camera assembly 47 is installed on the first supporting frame 46.

[0025] Specifically, the feeding trolley 24 moves a plurality of stacked product-filled trays 26 to the side end of the discharging mechanism 2, the feeding assembly 21 of the discharging mechanism 2 drives the plurality of product-filled trays 26 to rise to the product feeding station, the empty tray 26 is placed on the product discharging station, the four products in the tray 26 are clamped and moved by the moving mechanism 3, when moving to the designated position, the clamping assembly 44 of the detection mechanism 4 clamps the four products, then drives the four products to be fixed on the four carriers 422 of the carrier assembly 42, the horizontal driving mechanism 41 moves the carrier assembly 42 to the lower side of the camera assembly 47, the camera assembly 47 takes pictures and scans the codes of the plurality of products, then the horizontal driving mechanism 41 drives the carrier assembly 42 to move to the lower side of the test assembly 45, the test assembly 45 tests the four products, after the test is completed, the clamping assembly 44 clamps and moves up the four products, the moving mechanism 3 clamps the four products, if the four products are all good products, the moving mechanism moves the four products to the tray 26 of the discharging station, if there is a defective product, the moving mechanism moves the defective product to the defective product recycling box 5, and then moves other good products to the storage box 6, when a row of four products in the storage box 6 are collected, the moving mechanism moves them to the tray 26 of the discharging station.

[0026] In the above structure, the discharging mechanism 2, the moving mechanism 3 and the detection mechanism 4 cooperate with each other to realize the simultaneous moving and testing of a plurality of products. The device not only realizes the automatic functional testing of the PCB, but also improves the testing efficiency of the device.

[0027] As Figure 2As shown, in one of the embodiments, the feeding mechanism 2 of the circuit board testing device comprises a feeding assembly 21, a discharging assembly 22 and a clamping mechanism 23. The feeding assembly 21 comprises a feeding conveying line 211, a first lifting mechanism 212 and two feeding cylinders 213 symmetrically arranged for lifting the trays 26 on the feeding trolley 24. The discharging assembly 22 comprises a discharging conveying line 221, a second lifting mechanism 222 and two discharging cylinders 223 symmetrically arranged for moving the trays 26 to the discharging trolley 25. The first lifting mechanism 212 is used for lifting the trays 26 on the feeding conveying line 211 to the feeding station. The second lifting mechanism 222 is used for driving the trays 26 on the discharging station to descend to the discharging conveying line 221. The clamping mechanism 23 is used for clamping and moving the empty trays 26 on the feeding station to the discharging station. The feeding trolley 24 moves the multiple trays 26 stacked and loaded with products to the feeding conveying line 211. The two feeding cylinders 213 simultaneously lift the multiple trays 26. The feeding trolley 24 moves out of the device. The feeding cylinders 213 drive the multiple trays 26 to move downward, so that the multiple trays 26 are placed on the feeding conveying line 211. The multiple trays 26 on the feeding conveying line 211 move to the first lifting mechanism 212. The first lifting mechanism 212 drives the multiple trays 26 to lift, so that the first tray 26 of the multiple trays 26 is located on the feeding station. When the products in the first tray 26 are all transferred, the clamping mechanism 23 clamps and moves the first tray 26 to the discharging station. The empty tray 26 can be placed with the tested products. When the tray 26 is loaded with the tested products, the second lifting mechanism 222 drives the tray 26 to move downward, so that the second empty tray 26 is located on the discharging station. The trays 26 are stacked in sequence. When the trays 26 below the discharging station are stacked, the two discharging cylinders 223 drive the multiple trays 26 to lift. Then, the discharging trolley 25 is pushed into the multiple trays 26 below, so that the multiple trays 26 loaded with the tested products are located on the discharging trolley 25. The discharging trolley 25 discharges the products. The first lifting mechanism 212 and the second lifting mechanism 222 each comprise a second linear module and a support base 421. The driving end of the second linear module is connected with the support base 421. The tray 26 is placed on the support base 421. This arrangement facilitates feeding the multiple trays 26 loaded with the untested products and discharging the multiple trays 26 loaded with the tested products, thereby improving the feeding and discharging efficiency.

[0028] As Figure 2As shown in the drawings, in one embodiment, the clamping mechanism 23 of the circuit board testing device comprises a second support frame 231, a horizontally moving first linear module 232, a first connecting frame 233, a first lifting cylinder 234 and a clamping assembly 235. The second support frame 231 is installed on the workbench 1, the first linear module 232 is installed on the second support frame 231, the driving end of the first linear module 232 is connected with the first connecting frame 233, the first connecting frame 233 is installed on the first connecting frame 233, the driving end of the first connecting frame 233 is connected with the clamping assembly 235, and the clamping assembly 235 is connected with the first connecting frame 233 through a guide assembly. The clamping assembly 235 comprises two symmetrically arranged second cylinders 100 and two symmetrically arranged third clamping plates 101. The driving end of each of the two second cylinders 100 is connected with one of the two third clamping plates 101. The two second cylinders 100 are used to drive the two third clamping plates 101 to move relative to each other to clamp the tray 26. When the tray 26 on the feeding station is empty, the first linear module 232 drives the first connecting frame 233 to move the first cylinder 234 and the clamping assembly 235 to the upper side of the tray 26 on the feeding station. The first cylinder 234 drives the clamping assembly 235 to move downward, and then the two second cylinders 100 drive the two third clamping plates 101 to clamp the tray 26. The first cylinder 234 drives the clamping assembly 235 and the tray 26 to move upward, and the first linear module 232 drives the first connecting frame 233 to move the tray 26 horizontally to the upper side of the unloading station. The first cylinder 234 places the tray 26 on the unloading station, and the two second cylinders 100 drive the two third clamping plates 101 to release the empty tray 26. This arrangement facilitates the transfer of the empty tray 26 to the unloading station, improves the transfer efficiency, and improves the utilization rate of the tray 26.

[0029] As shown in the drawings, Figure 3 As shown in the drawings, in one embodiment, the clamping mechanism 23 of the circuit board testing device comprises a second support frame 231, a horizontally moving first linear module 232, a first connecting frame 233, a first lifting cylinder 234 and a clamping assembly 235. The second support frame 231 is installed on the workbench 1, the first linear module 232 is installed on the second support frame 231, the driving end of the first linear module 232 is connected with the first connecting frame 233, the first connecting frame 233 is installed on the first connecting frame 233, the driving end of the first connecting frame 233 is connected with the clamping assembly 235, and the clamping assembly 235 is connected with the first connecting frame 233 through a guide assembly. The clamping assembly 235 comprises two symmetrically arranged second cylinders 100 and two symmetrically arranged third clamping plates 101. The driving end of each of the two second cylinders 100 is connected with one of the two third clamping plates 101. The two second cylinders 100 are used to drive the two third clamping plates 101 to move relative to each other to clamp the tray 26. When the tray 26 on the feeding station is empty, the first linear module 232 drives the first connecting frame 233 to move the first cylinder 234 and the clamping assembly 235 to the upper side of the tray 26 on the feeding station. The first cylinder 234 drives the clamping assembly 235 to move downward, and then the two second cylinders 100 drive the two third clamping plates 101 to clamp the tray 26. The first cylinder 234 drives the clamping assembly 235 and the tray 26 to move upward, and the first linear module 232 drives the first connecting frame 233 to move the tray 26 horizontally to the upper side of the unloading station. The first cylinder 234 places the tray 26 on the unloading station, and the two second cylinders 100 drive the two third clamping plates 101 to release the empty tray 26. This arrangement facilitates the transfer of the empty tray 26 to the unloading station, improves the transfer efficiency, and improves the utilization rate of the tray 26.

[0030] As shown in the drawings, Figure 4As shown in the drawings, in one embodiment, the carrier assembly 42 of the circuit board testing device comprises a base 421 and a plurality of carriers 422, the base 421 is in sliding fit with the workbench 1, and the plurality of carriers 422 are sequentially and spacedly installed on the base 421. Four product placing carriers 422 are sequentially and spacedly arranged on the base 421. This arrangement facilitates the fixation of the products.

[0031] As shown in the drawings, Figure 5 As shown in the drawings, in one embodiment, the clamping assembly 44 of the circuit board testing device comprises a third cylinder 441, a second connecting frame 442, a rotary motor 443, a plurality of first clamping plates 444 and a plurality of second clamping plates 445, the third cylinder 441 is installed on the fixed frame 43, the driving end of the third cylinder 441 is connected with the second connecting frame 442, the rotary motor 443 is installed on one end of the second connecting frame 442, the driving end of the rotary motor 443 is connected with the plurality of first clamping plates 444 and the plurality of second clamping plates 445 through a connecting assembly 446, and the rotary motor 443 is used to drive the connecting assembly 446 to drive the first clamping plates 444 and the second clamping plates 445 to move relatively to clamp the products. When the four products are located below the clamping assembly 44, the third cylinder 441 drives the second connecting frame 442 to move towards the four products, and at the same time, the rotary motor 443 drives the connecting assembly 446 to drive the four first clamping plates 444 and the four second clamping plates 445 to move relatively to clamp the four products respectively, and then the third cylinder 441 drives the four products to move downwards so that the four products are placed on the four carriers 422 simultaneously. This arrangement facilitates the fixation of the products on the carrier assembly 42.

[0032] As shown in the drawings, Figure 5 As shown in the drawings, in one embodiment, the testing assembly 45 of the circuit board testing device comprises an electric cylinder 451, a third connecting frame 452 and a plurality of testing needle assemblies 453 for testing the products on the carrier assembly 42, the electric cylinder 451 is installed on the fixed frame 43, the driving end of the electric cylinder 451 is connected with the third connecting frame 452, and the plurality of testing needle assemblies 453 are sequentially and spacedly installed on the third connecting frame 452. When the carrier assembly 42 drives the products to move to the right below the testing assembly 45 by the horizontal driving mechanism 41, the electric cylinder 451 drives the third connecting frame 452 to drive the four testing needle assemblies 453 to move upwards to test the four products on the carrier assembly 42. This arrangement facilitates the testing of the products.

[0033] As shown in the drawings, Figure 4As shown, in one of the embodiments, the camera assembly 47 of the circuit board testing device comprises a camera 471 and a light source 472, which are respectively mounted on the first support frame 46, and the light source 472 is located below the camera 471. When the products are fixed on the carrier assembly 42, the horizontal driving mechanism 41 drives the carrier assembly 42 to move below the camera assembly 47, and the four products are photographed and scanned by the camera 471, and the light source 472 illuminates the camera 471. This arrangement facilitates the photographing and scanning of the products.

[0034] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A circuit board testing apparatus, characterized by comprising: The workbench (1) is provided with a feeding mechanism (2) for feeding and discharging the tray (26), a transfer mechanism (3) for transferring the product, a detection mechanism (4) for testing the product, a defective product recycling box (5) for placing defective products, and a storage box (6) for temporarily storing the product, and the transfer mechanism (3) is located between the feeding mechanism (2) and the detection mechanism (4); The detection mechanism (4) comprises two symmetrical detection assemblies, and each detection assembly comprises a horizontal driving mechanism (41), a carrier assembly (42) for placing the product, a fixing frame (43), a clamping assembly (44) for clamping the product on the transfer mechanism (3), a testing assembly (45) for testing the product on the carrier assembly (42), a first support frame (46), and a camera assembly (47) for photographing and scanning the code of the product on the carrier assembly (42), the horizontal driving mechanism (41), the fixing frame (43), and the first support frame (46) are respectively installed on the workbench (1), the driving end of the horizontal driving mechanism (41) is connected with the carrier assembly (42), the carrier assembly (42) is in sliding fit with the workbench (1), the clamping assembly (44) and the testing assembly (45) are installed on the fixing frame (43), and the camera assembly (47) is installed on the first support frame (46).

2. A circuit board testing apparatus according to claim 1, wherein The feeding mechanism (2) comprises a feeding assembly (21), a discharging assembly (22), and a clamping mechanism (23), the feeding assembly (21) comprises a feeding conveying line (211), a first lifting mechanism (212), and two feeding cylinders (213) symmetrically arranged and used for lifting the tray (26) on the feeding trolley (24), the discharging assembly (22) comprises a discharging conveying line (221), a second lifting mechanism (222), and two discharging cylinders (223) symmetrically arranged and used for moving the tray (26) to the discharging trolley (25), the first lifting mechanism (212) is used for lifting the tray (26) on the feeding conveying line (211) to a feeding station, the second lifting mechanism (222) is used for driving the tray (26) on the discharging station to descend to the discharging conveying line (221), and the clamping mechanism (23) is used for clamping and moving the empty tray (26) on the feeding station to the discharging station.

3. A circuit board testing apparatus according to claim 2, wherein The clamping mechanism (23) comprises a second support frame (231), a horizontally moving first linear module (232), a first connecting frame (233), a first cylinder (234) moving up and down, and a clamping assembly (235), the second support frame (231) is installed on the workbench (1), the first linear module (232) is installed on the second support frame (231), the driving end of the first linear module (232) is connected with the first connecting frame (233), the first cylinder (234) is installed on the first connecting frame (233), the driving end of the first cylinder (234) is connected with the clamping assembly (235), the clamping assembly (235) is connected with the first connecting frame (233) through a guide assembly, and the clamping assembly (235) comprises two symmetrically arranged second cylinders (100) and two symmetrically arranged third clamping plates (101), the driving ends of the two second cylinders (100) are respectively connected with the two third clamping plates (101), and the two second cylinders (100) are used for driving the two third clamping plates (101) to move relatively to clamp the tray (26).

4. The circuit board testing apparatus according to claim 1, wherein The transfer mechanism (3) comprises a multi-axis mechanical arm (31) and a material clamping mechanism (32), the material clamping mechanism (32) comprises a fixed plate (321) and a plurality of clamping jaw cylinders (322) for clamping products in the tray (26), the plurality of clamping jaw cylinders (322) are adjustably connected with the fixed plate (321), and the driving end of the multi-axis mechanical arm (31) is connected with the fixed plate (321).

5. The circuit board testing apparatus of claim 1, wherein The carrier assembly (42) comprises a base (421) and a plurality of carriers (422), the base (421) is in sliding fit with the workbench (1), and the plurality of carriers (422) are sequentially and interval ly installed on the base (421).

6. The circuit board testing apparatus of claim 1, wherein The clamping assembly (44) comprises a third cylinder (441), a second connecting frame (442), a rotary motor (443), a plurality of first clamping plates (444) and a plurality of second clamping plates (445), the third cylinder (441) is installed on the fixed frame (43), the driving end of the third cylinder (441) is connected with the second connecting frame (442), the rotary motor (443) is installed at one end of the second connecting frame (442), the driving end of the rotary motor (443) is connected with the plurality of first clamping plates (444) and the plurality of second clamping plates (445) through a connecting assembly (446), and the rotary motor (443) is used for driving the connecting assembly (446) to drive the first clamping plates (444) and the second clamping plates (445) to move relatively to clamp the products.

7. The circuit board testing apparatus of claim 1, wherein The testing assembly (45) comprises an electric cylinder (451), a third connecting frame (452) and a plurality of test needle assemblies (453) for testing the products on the carrier assembly (42), the electric cylinder (451) is installed on the fixed frame (43), the driving end of the electric cylinder (451) is connected with the third connecting frame (452), and the plurality of test needle assemblies (453) are sequentially and interval ly installed on the third connecting frame (452).

8. The circuit board testing apparatus of claim 1, wherein The camera assembly (47) comprises a camera (471) and a light source (472), the camera (471) and the light source (472) are respectively installed on the first support frame (46), and the light source (472) is located below the camera (471).

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