Full-automatic testing machine for PCBA (printed circuit board assembly)

Abstract

The invention relates to the technical field of PCBA testing, in particular to a full-automatic testing machine for PCBA, which comprises an automatic feeding machine, an automatic testing machine and an automatic discharging machine which are arranged side by side from left to right, and is characterized in that the automatic testing machine is composed of a testing cabinet, a testing machine table, an upper die pressing mechanism and a conveying and lower die mechanism; the bottom end of the test cabinet is provided with a test bench. A conveying and lower die mechanism is arranged in the test cabinet and located below the upper die pressing mechanism, and a lower die jig is inserted in the conveying and lower die mechanism. According to the invention, the automation degree and the working efficiency are improved, and the insertion function of the upper and lower surfaces of the PCBA and the jig can be realized by using one power source; meanwhile, the jig needle plate and the machine table needle plate can be completely inserted through the arranged floating connecting assembly, the detection function of PCBA of different widths is achieved by arranging the conveying and lower die mechanism, and the compatibility during detection is improved.

Description

Technical Field

[0001] The invention relates to the technical field of PCBA testing, in particular to a full-automatic testing machine for PCBA. Background Art

[0002] PCBA is a printed circuit board assembly, where the blank PCB goes through the entire process of SMT mounting or DIP plug-in. PCBA is a circuit board obtained by printing solder paste on the PCB and then installing various components such as resistors, integrated circuits, capacitors and transformers according to the purpose and required characteristics of the circuit board. This type of circuit board usually needs to be tested after assembly.

[0003] The existing PCBA test machine has a low degree of automation and requires manual assistance during the test process, which increases the labor intensity during testing and reduces work efficiency. In addition, the upper and lower mold fixtures of the existing test machine need to use their own power sources to complete the compression with the PCBA to achieve signal connection, so the entire machine requires two power sources, which leads to high costs. The fixture needle plate and the machine needle plate of the existing test machine cannot be fully inserted during plugging, which affects the subsequent test accuracy. At the same time, the existing test machine is difficult to realize the detection function of PCBAs of different widths, resulting in poor compatibility of the test machine. Summary of the invention

[0004] The object of the present invention is to provide a fully automatic testing machine for PCBA to solve the problems mentioned in the above background technology that the existing testing machine has low automation and work efficiency, is difficult to detect PCBAs of different widths, requires two power sources, and the fixture needle plate and the machine needle plate cannot be fully inserted.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully automatic testing machine for PCBA, comprising an automatic loading machine, an automatic testing machine and an automatic unloading machine placed side by side from left to right, the automatic testing machine is composed of a testing cabinet, a testing machine platform, an upper mold pressing mechanism and a transmission and lower mold mechanism, the testing cabinet is arranged between the loading cabinet and the unloading cabinet, and the testing machine platform is installed at the bottom of the testing cabinet; the top of the testing cabinet is connected with the upper mold pressing mechanism, and the transmission and lower mold mechanism is arranged inside the testing cabinet and below the upper mold pressing mechanism, the lower mold fixture is plugged in the transmission and lower mold mechanism, and two groups of fixture needle plates are fixed on the surface of the lower mold fixture, and the lower mold fixture cooperates with the testing machine platform, the upper mold pressing mechanism and the transmission and lower mold mechanism for the downward pressure detection of PCBA.

[0006] Preferably, the automatic feeding machine includes a feeding cabinet, a cage servo lifting module, a cage conveyor line, a width-adjustable product conveyor line and a cylinder push plate module. The upper and lower layers of the feeding cabinet are both fixed with cage conveyor lines, and a cage servo lifting module is installed on the surface of the feeding cabinet and on one side of the cage conveyor line.

[0007] Preferably, a width-adjustable product conveyor line and a cylinder push plate module are installed on the top of the loading cabinet. The cylinder push plate module is used to push the PCBA to be tested in the cage in the cage servo lifting module to the cylinder push plate module, and the cylinder push plate module transports it to the inside of the automatic testing machine to realize the loading work.

[0008] Preferably, the automatic unloading machine is composed of an unloading cabinet, an OK cage servo lifting module, a rotating push plate module, an NG cage servo lifting module and a cage conveying line. The upper and lower layers of the unloading cabinet are both fixed with cage conveying lines, and the NG cage servo lifting module and the OK cage servo lifting module are respectively installed on the surface of the unloading cabinet and on one side of the cage conveying line; a rotating push plate module is installed on the surface of the unloading cabinet, and the rotating push plate module is used to rotate and unload the PCBA after inspection by the automatic testing machine, and the suitable PCBA is unloaded into the OK cage servo lifting module, and the unqualified PCBA is unloaded into the NG cage servo lifting module after rotation.

[0009] Preferably, the upper mold pressing mechanism includes a carrier, a lifting plate, an electric lifting and pressing mold group, a spring pressure strip and an upper mold fixture. The carrier is fixed to the surface of the test cabinet, and the lifting plate is slidably connected inside the carrier.

[0010] Preferably, an electric lifting and pressing module is installed between the lifting carrier and the carrier, and the electric lifting and pressing module is used to push the lifting carrier to realize the pressing work; an upper mold fixture is plugged into the bottom end of the lifting carrier, and the upper mold fixture is used to detect the upper surface of the PCBA, and spring pressure strips are installed on both sides of the lifting carrier, and the spring pressure strips are used for buffering work during pressing.

[0011] Preferably, the transmission and lower mold mechanism is composed of a support frame, an adjustable conveyor line, a pushing cylinder and a pushing frame. The support frame is fixedly connected to the inside of the test cabinet, and the pushing cylinder is installed inside the support frame. The output end of the pushing cylinder is fixed with the pushing frame, and the surface of the pushing frame is connected to two sets of machine needle plates through a floating connection assembly. After the lower mold fixture is inserted into the support frame, the pushing cylinder pushes the fixture needle plate on the surface of the pushing frame and the machine needle plate on the surface of the lower mold fixture to engage and dock with each other.

[0012] Preferably, the surface of the support frame is also connected to an adjustable conveyor line, which is used to receive PCBA fed from the width-adjustable product conveyor line and realize conveying work; the adjustable conveyor line includes a width-adjusting screw module, a fixed conveyor line, a dynamic conveyor line and a downward pressure buffer spring, and the surface of the support frame is connected to a fixed conveyor line that can slide up and down.

[0013] Preferably, two groups of width-adjusting screw modules are provided, the two groups of width-adjusting screw modules are fixedly connected on both sides of the supporting frame, and a moving transmission line that can move up and down is connected to the sliding seat between adjacent width-adjusting screw modules, and both ends of the moving transmission line and the fixed transmission line are fixedly connected with a downward pressure buffer spring, and the bottom end of the downward pressure buffer spring is respectively fixedly connected to the sliding seat and the supporting frame of the width-adjusting screw module.

[0014] Preferably, the floating connection assembly is composed of a through groove, a screw rod and a screw groove. The through groove is opened at the four corner positions of the needle plate of the machine table. A screw groove is arranged on one side of the through groove. The screw groove is opened on the surface of the pushing frame. A screw rod is arranged inside the through groove. The screw rod passes through the through groove and is screwed to the automatic feeding machine, and there is a gap between the screw rods when passing through the through groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the fully automatic testing machine for PCBA improves the degree of automation and work efficiency by arranging an automatic loader, an automatic testing machine and an automatic unloader; by arranging an electric lifting and pressing module, a power source is used to realize the plug-in function of the upper and lower sides of the PCBA, which solves the problem that the prior art requires the use of two power sources to realize the plug-in of the upper and lower sides of the PCBA with the fixture; and the present invention arranges a floating connection component so that the machine needle plate is in a floating state and is not firmly fixed, so that the fixture needle plate and the machine needle plate can be fully inserted when plugged in, avoiding the phenomenon that some needles cannot be plugged in; at the same time, the present invention realizes the detection function of PCBAs of different widths by arranging a transmission and lower mold mechanism, thereby improving the compatibility during detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the internal enlarged structure of the present invention;

[0019] Figure 4 It is an enlarged structural schematic diagram of the automatic feeding machine of the present invention;

[0020] Figure 5 It is a schematic diagram of the internal enlarged structure of the automatic testing machine of the present invention;

[0021] Figure 6 It is a schematic diagram of the exploded structure of the upper mold pressing mechanism of the present invention;

[0022] Figure 7 It is an enlarged structural schematic diagram of the upper mold pressing mechanism of the present invention;

[0023] Figure 8 It is an enlarged structural schematic diagram of the transmission and lower mold mechanism of the present invention;

[0024] Fig. 9 It is a schematic diagram of the enlarged structure of the lower mold fixture of the present invention from an oblique perspective;

[0025] Fig.10 It is a cross-sectional enlarged structural schematic diagram of the floating connection assembly of the present invention.

[0026] In the figure: 1. Automatic feeding machine; 11. Feeding cabinet; 12. Cage servo lifting module; 13. Cage conveyor line; 14. Width-adjustable product conveyor line; 15. Cylinder push plate module; 2. Automatic testing machine; 21. Testing cabinet; 3. Automatic unloading machine; 31. Unloading cabinet; 32. OK cage servo lifting module; 33. Rotating push plate module; 34. NG cage servo lifting module; 35. Cage conveyor line; 4. Testing machine; 5. Upper mold pressing mechanism; 51. Carrier; 52. Lifting carrier plate; 53, electric lifting and pressing module; 54, spring pressure strip; 55, upper mold fixture; 6, transmission and lower mold mechanism; 61, support frame; 62, adjustable conveyor line; 621, width adjustment screw module; 622, fixed transmission line; 623, dynamic transmission line; 624, pressing buffer spring; 63, pushing cylinder; 64, pushing frame; 7, lower mold fixture; 8, fixture needle plate; 9, machine needle plate; 10, floating connection component; 101, through slot; 102, screw; 103, screw groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] The structure of a fully automatic testing machine for PCBA provided by the present invention is as follows Figure 1 , Figure 2 as well as Figure 4 As shown, it includes an automatic loader 1, an automatic testing machine 2 and an automatic unloader 3 placed side by side from left to right. The automatic loader 1 includes a loading cabinet 11, a cage servo lifting module 12, a cage conveyor line 13, a width-adjustable product conveyor line 14 and a cylinder push plate module 15. The upper and lower layers of the loading cabinet 11 are both fixed with a cage conveyor line 13. The cage servo lifting module 12 is installed on the surface of the loading cabinet 11 and on one side of the cage conveyor line 13; the width-adjustable product conveyor line 14 and a cylinder push plate module 15 are installed on the top of the loading cabinet 11. The cylinder push plate module 15 is used to push the PCBA to be tested in the cage of the cage servo lifting module 12 to the cylinder push plate module 15, and the cylinder push plate module 15 conveys it to the inside of the automatic testing machine 2 to realize the loading work.

[0029] During implementation, the fully loaded cage is conveyed to the cage servo lifting module 12 through the cage conveyor line 13 on the lower layer inside the loading cabinet 11 and lifted by the cage servo lifting module 12. After lifting, the cylinder push plate module 15 pushes the PCBA inside the cage into the cylinder push plate module 15, and the cylinder push plate module 15 is used to load the automatic testing machine 2. When the PCBA in the cage is loaded, the empty cage will be transported out through the cage conveyor line 13 on the upper layer.

[0030] Furthermore, if Figure 2 , Figure 3 as well as Figure 4 As shown, the automatic unloading machine 3 is composed of an unloading cabinet 31, an OK cage servo lifting module 32, a rotating push plate module 33, an NG cage servo lifting module 34 and a cage conveying line 35. The upper and lower layers of the unloading cabinet 31 are fixed with cage conveying lines 35, and the NG cage servo lifting module 34 and the OK cage servo lifting module 32 are respectively installed on the surface of the unloading cabinet 31 and on one side of the cage conveying line 35; a rotating push plate module 33 with adjustable width is installed on the surface of the unloading cabinet 31, and the rotating push plate module 33 is used to rotate and unload the PCBA after being tested by the automatic testing machine 2, and the suitable PCBA is unloaded into the OK cage servo lifting module 32, and the unqualified PCBA is unloaded into the NG cage servo lifting module 34 after being rotated.

[0031] During implementation, unqualified PCBAs are rotated to ninety degrees by the rotating push plate module 33 and then conveyed to the cage in the NG cage servo lifting module 34, while qualified PCBAs are conveyed to the cage in the OK cage servo lifting module 32 by the rotating push plate module 33. After the cage is fully loaded, the OK cage servo lifting module 32 moves down and is sent out through the lower cage conveying line 35, while the upper cage conveying line 35 conveys the empty cage to the OK cage servo lifting module 32 for material reception.

[0032] Furthermore, if Figure 5 as well as Figure 6 As shown, the automatic testing machine 2 is composed of a testing cabinet 21, a testing machine 4, an upper mold pressing mechanism 5 and a transmission and lower mold mechanism 6. The testing cabinet 21 is arranged in the middle of the loading cabinet 11 and the unloading cabinet 31, and the testing machine 4 is installed at the bottom of the testing cabinet 21; the top of the testing cabinet 21 is connected with the upper mold pressing mechanism 5, and the transmission and lower mold mechanism 6 is arranged inside the testing cabinet 21 and below the upper mold pressing mechanism 5. The transmission and lower mold mechanism 6 is plugged with a lower mold fixture 7 with a material blocking cylinder, and two groups of fixture needle plates 8 are fixed on the surface of the lower mold fixture 7. The lower mold fixture 7 cooperates with the testing machine 4, the upper mold pressing mechanism 5 and the transmission and lower mold mechanism 6 for the downward pressure detection of PCBA.

[0033] During implementation, the upper mold pressing mechanism 5 presses down the PCBA on the surface of the transmission and lower mold mechanism 6, and finally the testing machine 4 is used to perform the test.

[0034] Furthermore, if Figure 6 as well as Figure 7 As shown, the upper mold pressing mechanism 5 includes a carrier 51, a lifting carrier plate 52, an electric lifting pressing module 53, a spring pressure strip 54 and an upper mold fixture 55. The carrier 51 is fixedly connected to the surface of the test cabinet 21, and the interior of the carrier 51 is slidably connected with a lifting carrier plate 52 with a locking cylinder in the middle. An electric lifting pressing module 53 is installed between the lifting carrier plate 52 and the carrier 51. The electric lifting pressing module 53 is used to push the lifting carrier plate 52 to achieve the pressing work; the bottom end of the lifting carrier plate 52 is plugged with an upper mold fixture 55. After the upper mold fixture 55 is inserted, it is pressed down and locked by the locking cylinder. The upper mold fixture 55 is used to detect the upper surface of the PCBA. Spring pressure strips 54 are installed on both sides of the lifting carrier plate 52. The spring pressure strips 54 are used for buffering during pressing.

[0035] During implementation, the electric lifting and pressing module 53 inside the carrier 51 drives the lifting carrier 52 to be pressed down, and the upper mold fixture 55 will be inserted into the upper surface of the PCBA during the pressing, and then continue to press down, so that the PCBA on the surface of the adjustable conveyor line 62 is pressed down until its lower surface is inserted into the upper surface of the lower mold fixture 7.

[0036] Furthermore, if Figure 8 as well as Fig. 9 As shown, the transmission and lower mold mechanism 6 is composed of a support frame 61, an adjustable conveying line 62, a pushing cylinder 63 and a pushing frame 64. The support frame 61 is fixedly connected to the inside of the test cabinet 21. A downward pressure cylinder is installed on the surface of the support frame 61, and a pushing cylinder 63 is installed inside the support frame 61. The output end of the pushing cylinder 63 is fixed with a pushing frame 64, and the surface of the pushing frame 64 is connected to two groups of machine needle plates 9 through a floating connection component 10. After the lower mold fixture 7 is inserted into the support frame 61, it is pressed down and fixed by the downward pressure cylinder on the support frame 61. At the same time, the pushing cylinder 63 pushes the fixture needle plate 8 on the surface of the pushing frame 64 and the machine needle plate 9 on the surface of the lower mold fixture 7 to plug and dock with each other.

[0037] During implementation, the corresponding upper mold jig 55 and lower mold jig 7 are respectively inserted into the lifting carrier plate 52 and the support frame 61 according to the type of PCBA. After the upper mold jig 55 and the lower mold jig 7 are inserted, they are fixed by the locking cylinder and the downward pressure cylinder respectively; the PCBA loaded by the cylinder push plate module 15 will enter the adjustable conveyor line 62 and be blocked by the blocking cylinder on the surface of the lower mold jig 7.

[0038] Furthermore, if Figure 7 as well as Figure 8 As shown, the surface of the support frame 61 is also connected to an adjustable conveyor line 62, which is used to receive the PCBA loaded from the width-adjustable product conveyor line 14 and realize the conveying work; the adjustable conveyor line 62 includes a width-adjusting screw module 621, a fixed conveying line 622, a dynamic conveying line 623 and a downward pressure buffer spring 624, and the surface of the support frame 61 is connected to a fixed conveying line 622 that can slide up and down, and the width-adjusting screw module 621 is provided with two groups, and the two groups of width-adjusting screw modules 621 are fixedly connected to both sides of the support frame 61, and the dynamic conveying line 623 that can move up and down is connected to the slide seat between adjacent width-adjusting screw modules 621, and the two ends of the dynamic conveying line 623 and the fixed conveying line 622 are fixedly connected with a downward pressure buffer spring 624, and the bottom ends of the downward pressure buffer spring 624 in the dynamic conveying line 623 and the fixed conveying line 622 are respectively fixed to the slide seat of the width-adjusting screw module 621 and the support frame 61.

[0039] During implementation, the moving transmission line 623 is driven to move by the width-adjusting screw module 621, so that the distance between the moving transmission line 623 and the fixed transmission line 622 changes.

[0040] Furthermore, if Fig. 9 as well as Fig.10As shown, the floating connection component 10 is composed of a through slot 101, a screw rod 102 and a screw groove 103. The through slot 101 is opened at the four corner positions of the machine needle plate 9. A screw groove 103 is set on one side of the through slot 101. The screw groove 103 is opened on the surface of the pushing frame 64. A screw rod 102 is set inside the through slot 101, and the screw rod 102 passes through the through slot 101 and is screwed to the automatic feeder 3. There is a gap between the screw rod 102 when passing through the through slot 101, so that the machine needle plate 9 can float in the up, down, left and right directions.

[0041] During implementation, the machine needle plate 9 and the push frame 64 are connected by the floating connection assembly 10, so the screw 102 only passes through the through groove 101 and is fixed to the screw groove 103, and the machine needle plate 9 is in a floating state and is not firmly fixed, so that the fixture needle plate 8 and the machine needle plate 9 can be fully inserted when plugged in.

[0042] Working principle: When in use, first insert the corresponding upper mold fixture 55 and lower mold fixture 7 into the lifting carrier plate 52 and the support frame 61 respectively according to the type of PCBA. After the upper mold fixture 55 and the lower mold fixture 7 are inserted, they are fixed by the locking cylinder and the pressing cylinder respectively. Then the pushing cylinder 63 pushes the machine needle plate 9 on the surface of the pushing frame 64 and the fixture needle plate 8 on the surface of the lower mold fixture 7 to be inserted. When inserting, since the machine needle plate 9 and the pushing frame 64 are connected by the floating connection component 10, the screw 102 only passes through the through groove 101 and is fixed to the screw groove 103, and the machine needle plate 9 is in a floating state and is not firmly fixed, so that the fixture needle plate 8 and the machine needle plate 9 can be fully inserted when plugged in, avoiding the phenomenon that some needles cannot be plugged in.

[0043] Subsequently, the width-adjustable product conveyor line 14, the rotating push plate module 33 and the adjustable conveyor line 62 are adjusted according to the width requirement of the PCBA. During adjustment, the movable conveyor line 623 is driven to move by the width-adjusting screw module 621, so that the distance between the movable conveyor line 623 and the fixed conveyor line 622 changes. Therefore, the present invention realizes the detection function of PCBAs of different widths, thereby improving the compatibility during detection.

[0044] During testing, the automatic testing machine 2 is loaded through the automatic feeding machine 1. When loading, the fully loaded cage is conveyed to the cage servo lifting module 12 through the cage conveyor line 13 on the lower layer inside the feeding cabinet 11 and lifted by the cage servo lifting module 12. After lifting, the cylinder push plate module 15 pushes the PCBA inside the cage into the cylinder push plate module 15, and the cylinder push plate module 15 loads the automatic testing machine 2. When the PCBA in the cage is loaded, the empty cage will be conveyed out through the cage conveyor line 13 on the upper layer.

[0045] Subsequently, the PCBA loaded by the cylinder push plate module 15 will enter the adjustable conveyor line 62 and be blocked by the material blocking cylinder on the surface of the lower mold fixture 7, and then the lifting and lowering plate 52 will be driven downward by the electric lifting and pressing module 53 inside the carrier 51. When pressing downward, the upper mold fixture 55 will be plugged into the upper surface of the PCBA, and then the downward pressure will continue, so that the PCBA on the surface of the adjustable conveyor line 62 will be pressed down to its lower surface and plugged into the upper surface of the lower mold fixture 7. During the pressing process, the spring pressure strip 54 and the downward pressure buffer spring 624 cooperate with each other to achieve the buffering work during the pressing process. At the same time, the present invention realizes the plug-in function of the upper and lower sides of the PCBA through a power source, which solves the problem that the prior art needs to use two power sources to realize the plug-in work of the upper and lower sides of the PCBA and the fixture.

[0046] After pressing down and plugging, the test is carried out through the test machine 4, and the PCBA after the test is unloaded by the automatic unloading machine 3. During unloading, the unqualified PCBA is rotated to ninety degrees by the rotating push plate module 33 and then conveyed to the cage in the NG cage servo lifting module 34, while the qualified PCBA is conveyed to the cage in the OK cage servo lifting module 32 by the rotating push plate module 33. After the cage is fully loaded, the OK cage servo lifting module 32 moves down and is sent out through the lower cage conveying line 35, and the upper cage conveying line 35 conveys it to the empty cage to the OK cage servo lifting module 32 for material connection.

[0047] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A fully automatic testing machine for PCBA, comprising an automatic loading machine (1), an automatic testing machine (2) and an automatic unloading machine (3) arranged side by side from left to right, characterized in that: The automatic testing machine (2) is composed of a testing cabinet (21), a testing machine platform (4), an upper mold pressing mechanism (5) and a transmission and lower mold mechanism (6). The testing machine platform (4) is installed at the bottom of the testing cabinet (21); the top of the testing cabinet (21) is connected to the upper mold pressing mechanism (5); a transmission and lower mold mechanism (6) is arranged inside the testing cabinet (21) and below the upper mold pressing mechanism (5); a lower mold fixture (7) is inserted inside the transmission and lower mold mechanism (6), and two groups of fixture needle plates (8) are fixed on the surface of the lower mold fixture (7); the lower mold fixture (7) cooperates with the testing machine platform (4), the upper mold pressing mechanism (5) and the transmission and lower mold mechanism (6) to perform downward pressure detection on PCBA.

2. A fully automatic testing machine for PCBA according to claim 1, characterized in that: The automatic feeding machine (1) comprises a feeding cabinet (11), a cage servo lifting module (12), a cage conveyor line (13), a width-adjustable product conveyor line (14) and a cylinder push plate module (15); the cage conveyor line (13) is fixed to the upper and lower layers of the feeding cabinet (11); and the cage servo lifting module (12) is installed on the surface of the feeding cabinet (11) and on one side of the cage conveyor line (13).

3. The fully automatic testing machine for PCBA according to claim 2, characterized in that: A width-adjustable product conveying line (14) and a cylinder push plate module (15) are installed on the top of the loading cabinet (11). The cylinder push plate module (15) is used to push the PCBA to be tested in the cage of the cage servo lifting module (12) to the cylinder push plate module (15), and then the cylinder push plate module (15) transports the PCBA to the inside of the automatic testing machine (2) to realize the loading work.

4. The fully automatic testing machine for PCBA according to claim 1, characterized in that: The automatic unloading machine (3) is composed of an unloading cabinet (31), an OK cage servo lifting module (32), a rotating push plate module (33), an NG cage servo lifting module (34) and a cage conveying line (35). The upper and lower layers of the unloading cabinet (31) are both fixed with a cage conveying line (35). The surface of the unloading cabinet (31) and one side of the cage conveying line (35) are respectively installed with an NG cage servo lifting module (34) and an OK cage servo lifting module (32); the surface of the unloading cabinet (31) is installed with a rotating push plate module (33), and the rotating push plate module (33) is used to rotate and unload the PCBA after being tested by the automatic testing machine (2), and the suitable PCBA is unloaded into the OK cage servo lifting module (32), and the unqualified PCBA is unloaded into the NG cage servo lifting module (34) after being rotated.

5. The fully automatic testing machine for PCBA according to claim 1, characterized in that: The upper mold pressing mechanism (5) comprises a carrier (51), a lifting carrier plate (52), an electric lifting pressing die set (53), a spring pressure strip (54) and an upper mold fixture (55); the carrier (51) is fixedly connected to the surface of the test cabinet (21), and the lifting carrier plate (52) is slidably connected inside the carrier (51).

6. The fully automatic testing machine for PCBA according to claim 5, characterized in that: An electric lifting and pressing module (53) is installed between the lifting plate (52) and the carrier (51), and the electric lifting and pressing module (53) is used to push the lifting plate (52) to achieve the pressing work; the bottom end of the lifting plate (52) is plugged with an upper mold fixture (55), and the upper mold fixture (55) is used to detect the upper surface of the PCBA; spring pressure strips (54) are installed on both sides of the lifting plate (52), and the spring pressure strips (54) are used for buffering work during pressing.

7. The fully automatic testing machine for PCBA according to claim 1, characterized in that: The transmission and lower mold mechanism (6) is composed of a support frame (61), an adjustable conveying line (62), a pushing cylinder (63) and a pushing frame (64). The support frame (61) is fixedly connected to the inside of the test cabinet (21), and the pushing cylinder (63) is installed inside the support frame (61). The output end of the pushing cylinder (63) is fixed with the pushing frame (64), and the surface of the pushing frame (64) is connected to two sets of machine needle plates (9) through a floating connection component (10). After the lower mold fixture (7) is inserted into the support frame (61), the pushing cylinder (63) pushes the fixture needle plate (8) on the surface of the pushing frame (64) and the machine needle plate (9) on the surface of the lower mold fixture (7) to be plugged and docked with each other.

8. The fully automatic testing machine for PCBA according to claim 7, characterized in that: The surface of the support frame (61) is also connected to an adjustable conveying line (62), which is used to receive PCBAs loaded from the width-adjustable product conveying line (14) and realize conveying work; the adjustable conveying line (62) includes a width-adjusting screw module (621), a fixed conveying line (622), a dynamic conveying line (623) and a downward pressure buffer spring (624), and the surface of the support frame (61) is connected to a fixed conveying line (622) that can slide up and down.

9. The fully automatic testing machine for PCBA according to claim 8, characterized in that: The width-adjusting screw modules (621) are provided with two groups, and the two groups of width-adjusting screw modules (621) are fixedly connected to the two sides of the support frame (61), and a movable transmission line (623) that can move up and down is connected to the slide seat between adjacent width-adjusting screw modules (621), and both ends of the movable transmission line (623) and the fixed transmission line (622) are fixedly connected with a downward pressure buffer spring (624), and the bottom end of the downward pressure buffer spring (624) is respectively fixedly connected to the slide seat of the width-adjusting screw module (621) and the support frame (61).

10. The fully automatic testing machine for PCBA according to claim 7, characterized in that: The floating connection component (10) is composed of a through slot (101), a screw rod (102) and a screw groove (103). The through slot (101) is provided at four corners of the machine needle plate (9). A screw groove (103) is provided on one side of the through slot (101). The screw groove (103) is provided on the surface of the pushing frame (64). A screw rod (102) is provided inside the through slot (101). The screw rod (102) passes through the through slot (101) and is screwed to the automatic feeder (3). There is a gap between the screw rod (102) and the through slot (101).

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