CN115593873A

CN115593873A - Send board test assembly line

Info

Publication number: CN115593873A
Application number: CN202211244660.5A
Authority: CN
Inventors: 林志成; 廖林斌; 康中明; 刘艳军; 谭雪平
Original assignee: Zhongshan Tuodian Electronic Technology Co ltd
Current assignee: Zhongshan Tuodian Electronic Technology Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-01-13

Abstract

The invention discloses a board conveying test assembly line, which comprises: the structure is adopted, the function that when the testing device tests the circuit board, another circuit board can be transported to the next testing device for testing is realized, the detection efficiency is greatly improved, and the equipment cost and the space cost are saved.

Description

Send board test assembly line

Technical Field

The invention relates to the technical field of circuit board testing, in particular to a board conveying testing assembly line.

Background

In the trade of production processing circuit board, for guaranteeing the performance of circuit board normally, testing procedure is indispensable, and in the present board test equipment that send, when testing circuit board, other circuit boards can't continue to carry through sending board test equipment, can only wait that the circuit board test of testing finishes, just can continue to transport the circuit board, and its detection efficiency is low.

The invention discloses an electronic equipment circuit board testing device, which comprises a detection table, a feeding support table, a discharging support table and a carrying device, wherein the invention patent adopts the structure to realize the automatic carrying and automatic detection functions of the circuit board, needs to arrange a conveying device beside the testing equipment, has large floor area, and is complex in structure and expensive in cost because the feeding, discharging and carrying equipment needs to be additionally arranged.

At present, an assembly line for continuously transporting other circuit boards to carry out next station testing while realizing the testing of the circuit boards without additionally arranging other equipment is lacked.

Disclosure of Invention

Accordingly, an object of the present invention is to provide a board conveying test line, which can convey another circuit board to a next test device for testing when the test device tests the circuit board.

The technical scheme adopted by the invention for solving the technical problem is to provide a board conveying test assembly line, which comprises the following steps: the circuit board conveying test device comprises a board conveying test rack, wherein a conveying line used for conveying circuit boards is arranged on the board conveying test rack, a plurality of test devices located on the conveying line are arranged on the board conveying test rack, a lifting frame and a lifting device are respectively arranged at positions corresponding to the test devices on the board conveying test rack, and the lifting device drives the lifting frame to ascend and support the circuit boards on the conveying line to a working area of the test devices.

As a further improvement of the invention, the plate conveying testing frame comprises a plurality of plate conveying frames, the testing devices are respectively arranged on the corresponding plate conveying frames, the conveying line comprises a plurality of plate conveying assemblies which are connected end to end, and each plate conveying assembly is correspondingly arranged on one plate conveying frame.

As a further improvement of the invention, the plate feeding conveying assembly is a conveyor belt assembly, the conveyor belt assembly comprises a conveyor belt main plate fixedly connected to the plate feeding rack, a roller assembly arranged on the conveyor belt main plate and a plate feeding belt wound on the roller assembly, and the conveyor belt main plate is provided with a lifting through hole with an upward opening for placing a lifting frame.

As a further improvement of the invention, at least two groups of board feeding belts and roller assemblies are provided, the lifting frame is arranged between the two groups of board feeding belts, and the lifting frame penetrates through a space between the two groups of board feeding belts and lifts the circuit board on the conveyor belt assembly when rising.

As a further improvement of the present invention, the lifting device is a two-stage lifting device, the two-stage lifting device includes a first lifting component and a second lifting component of the jacking and lifting frame, the second lifting component includes a pushing plate and a pushing driving device for driving the pushing plate to move, the upper surface of the pushing plate has a first pushing inclined surface, and when the first lifting component lifts the lifting frame to the working area of the pushing plate, the pushing plate pushes and supports the lifting frame through the first pushing inclined surface.

As a further improvement of the invention, the two-section lifting assembly further comprises a pushing connecting plate connected with the pushing plate and an X-axis slide rail assembly connected with the plate feeding testing rack and the pushing connecting plate, and the pushing driving device is arranged on the plate feeding testing rack and drives the pushing connecting plate to horizontally move on the X-axis slide rail assembly.

As a further improvement of the invention, the lifting frame comprises a lifting main frame and supporting pieces arranged at two ends of the lifting main frame, and the top push plate pushes the supporting pieces.

As a further improvement of the invention, the plate feeding testing frame is provided with a detection starting point area and a detection end point area, the plate feeding testing frame is provided with a backflow conveyor belt assembly positioned below the conveying line, and the transmission direction of the backflow conveyor belt assembly is opposite to the transmission direction of the conveying line.

As a further improvement of the invention, the detection starting area and the detection end area are respectively and correspondingly provided with an elevator platform for lifting and transporting the circuit board, the circuit board in the detection end area descends through the elevator platform and is butted with the backflow conveyor belt assembly, so that the circuit board can be transported to the detection starting area through the backflow conveyor belt assembly.

As a further improvement of the invention, the lifting machine platform comprises a lifting frame, a lifting plate conveying assembly and a lifting driving assembly connected to the lifting frame, and the lifting driving assembly drives the lifting plate conveying assembly to lift.

The invention has the beneficial effects that:

1. the circuit board is transported by the transport line, when the circuit board reaches the position corresponding to the testing device, the board conveying testing frame is provided with the lifting frame and the lifting device, the lifting device drives the lifting frame to ascend and bear the circuit board on the transport line to a working area of the testing device, and the lifting frame is located above the transport line in the testing process, so that the transport line can continuously convey the circuit board to a rear section for testing, the function of transporting another circuit board to a next testing device for testing when the testing device tests the circuit board is realized, the detection efficiency is greatly improved, and the equipment cost and the space cost are saved.

2. The plate conveying test rack comprises a plurality of plate conveying racks, the conveying line comprises a plurality of plate conveying components, the whole assembly line can be disassembled or assembled, and the assembly lines with different lengths are assembled in a customized mode according to different customer requirements or the number of products to be tested; the whole assembly line is modularized, the difficulty of a machining process is reduced, the assembly efficiency is improved, the transportation cost is reduced, and the maintenance is convenient.

3. Be provided with the ascending lifting through-hole of opening, the lifting frame is placed in the lifting through-hole, does not need the test of lifting frame lifting circuit board, for example the circuit board relatively testing arrangement of test is less or testing arrangement when breaking down, and the circuit board still can be transported through sending board conveyor components and pass through, improves the practicality of product.

4. Every send board conveyor components to go up to be equipped with two sets of board belts at least, control each a set of, lifting frame part sets up between these two sets of board belts that send, at the in-process that the lifting frame rose, can follow the space between these two sets of board belts from up passing and hold up the circuit board on the conveyer belt subassembly down, adopt above-mentioned structure, at the in-process that the lifting circuit board tested, the circuit board atress is even, and stable, reduce the vibration that produces when the lifting, avoid electronic component on the circuit board to receive the damage.

5. The lifting frame is pushed and supported by the top push plate, the top push plate bears irregular downward pressure on the lifting frame in the circuit board testing process, but the part of pressure is not applied to the pushing driving device for driving the top push plate to move, but the pushing connecting plate connected with the top push plate and the X-axis slide rail assembly connected with the pushing connecting plate directly bear downward pressure, the X-axis slide rail assembly is directly and fixedly mounted on the board conveying testing frame, the direction of the pressure is perpendicular to the direction driven by the pushing driving device, so that the pushing driving device cannot be compressed due to stress in the working process of the top push plate, vibration or instability is caused, the lifting frame is effectively stably supported, and meanwhile, the lifting frame is also connected to the Z-axis slide rail assembly, so that left and right deviation caused by vibration cannot occur, and the stability in the lifting process is improved.

6. The two-section type lifting device is divided into two-section type lifting, the first section is rapid lifting, the passing rate of the circuit board is improved, the beat is shortened, and the efficiency is improved; the second section is lifted at a low speed and used for accurately positioning the circuit board, so that each test interface of the circuit board is accurately positioned and uniformly stressed.

7. Through the setting of backward flow conveyer assembly and elevator platform, can make the circuit board that gets into the detection terminal area transport to the backward flow conveyer assembly through the elevator platform again on, and transport the circuit board to the detection starting point area again through backward flow conveyer assembly, thereby can carry out the secondary test automatically or make things convenient for the workman can be directly in the regional circuit board of the examination of placing of detection starting point or directly take away the circuit board that the test was accomplished away, or under the less condition of testing arrangement, the circuit board of not testing gets back to the detection starting point area again through the elevator platform, queue through the transfer chain once more and detect, improve the detection efficiency of circuit board.

Drawings

FIG. 1 is a schematic diagram of the structure and layout of the whole production line of the present invention;

FIG. 2 is a schematic view of the structure and layout of the whole production line of the present invention from another perspective;

FIG. 3 is a schematic view of the construction of the plate feeder frame, test apparatus, plate feeder assembly, and reflow conveyor assembly of the present invention;

FIG. 4 is a schematic diagram of a first schematic configuration of a board feeder frame and a board feeder assembly according to the present invention in a circuit board lifting state;

FIG. 5 is an exploded view of a second schematic configuration of a board transport rack and board transport assembly according to the present invention;

FIG. 6 is an enlarged view of A in FIG. 5;

FIG. 7 is a third schematic structural diagram of the board feeding rack and the board feeding assembly of the present invention in a non-lifted state;

FIG. 8 is a fourth schematic structural diagram of the board feeding frame and the board feeding assembly of the present invention in a state of lifting the circuit board;

FIG. 9 is an exploded view of the structure of the lift frame of the present invention;

FIG. 10 is a block diagram of the top pusher of the present invention;

FIG. 11 is a schematic structural diagram of an elevator platform according to the present invention;

FIG. 12 is a schematic view of the elevator platform of the present invention from another angle;

FIG. 13 is an exploded view of the lift support bracket of the lift platform of the present invention;

fig. 14 is a partial structural schematic view of the conveyor line of the present invention.

Detailed Description

The technical scheme of the invention is clearly and completely described below with reference to the accompanying drawings.

It should be noted that all directional indicators (such as upper, lower, left, right, front, and rear 8230; etc.) in the present invention are only used for explaining the relative positional relationship between the components in a specific posture (as shown in the attached drawings), the motion situation, etc., and if the specific posture is changed, the directional indicator is changed accordingly. In addition, the descriptions related to "preferred", "less preferred", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "preferred" or "less preferred" may explicitly or implicitly include at least one such feature.

Referring to fig. 1-14, the present invention provides a board conveying test line, comprising: the circuit board testing device comprises a board feeding testing frame, wherein a conveying line 8 used for conveying circuit boards is arranged on the board feeding testing frame, a plurality of testing devices 61 located on the conveying line 8 are arranged on the board feeding testing frame, a lifting frame 4 and a lifting device are respectively arranged at positions, corresponding to the testing devices 61, of the board feeding testing frame, and the lifting device drives the lifting frame 4 to ascend and support the circuit boards on the conveying line 8 to a working area of the testing devices 61; the circuit board is transported by the transport line 8, when the circuit board reaches the position corresponding to the test device 61, the lifting device drives the lifting frame 4 to ascend and support the circuit board on the transport line 8 to the working area of the test device 61, and because the lifting frame 4 is located above the transport line 8 in the test process, the transport line 8 can continue to transport the circuit board to the test device 61 at the rear section for testing, so that the function of transporting another circuit board to the next test device 61 for testing when the test device 61 tests the circuit board is realized, the detection efficiency is greatly improved, and the equipment cost and the space cost are saved.

Referring to fig. 3, the board feeding testing frame comprises a plurality of board feeding frames 1, the testing devices 61 are respectively arranged on the corresponding board feeding frames 1, the conveying line 8 comprises a plurality of board feeding conveying assemblies 2 connected end to end, and each board feeding conveying assembly 2 is correspondingly arranged on one board feeding frame 1; the single circuit board testing equipment 6 comprises a single board conveying rack 1, a single board conveying component 2 and a testing device 61, the circuit board testing equipment 6 is connected end to end, so that the whole assembly line can be disassembled or assembled, and the assembly lines with different lengths are customized and assembled according to different customer requirements or the number of products to be tested; the whole assembly line is modularized, the difficulty of a machining process is reduced, the assembly efficiency is improved, the transportation cost is reduced, and the maintenance is convenient.

Referring to fig. 3-9, the board conveying component 2 is a conveyor belt component, the conveyor belt component includes a conveyor belt main board 24 fixedly connected to the board conveying frame 1, a roller component disposed on the conveyor belt main board 24, and a board conveying belt 26 wound on the roller component, the conveyor belt main board 24 is provided with a lifting through hole 21 having an upward opening for placing the lifting frame 4; be provided with ascending lifting through-hole 21 of opening, lifting frame 4 is placed in lifting through-hole 21, does not need 4 lifting circuit board tests of lifting frame, and for example the circuit board of test is less relative testing arrangement 61 or when testing arrangement 61 broke down, and the circuit board still can be transported through sending board conveyor assembly 2 and pass through, improves the practicality of product.

As a preferable scheme of the present invention, referring to the enlarged view of fig. 6, the roller assembly comprises a plurality of first rollers 22 and second rollers 23 arranged on the main board 24 of the conveyor belt, the second rollers 23 are arranged at the lower part of the uplifting through hole 21, and the first rollers 22 arranged at the upper part of the second rollers 23 are respectively arranged at the front and rear sides of the uplifting through hole 21; the first roller 22 and the second roller 23 are disposed around the position of the lifting through hole 21, so that the lifting frame 4 does not interfere with the plate feeding belt 26 wound on the roller assembly during lifting, and in the preferred embodiment, the number of the second rollers 23 corresponds to the number of the lifting through holes 21.

Of course, there is also a scheme that the second roller 23 is not required to be provided, when the lifting through hole 21 vertically penetrates through the conveyor main board 24, the conveyor main board 24 is correspondingly divided into several small conveyor boards, so the roller assembly and the conveyor belts 26 wound on the roller assembly are also correspondingly divided into several groups, and the conveyor belts 26 between different groups are not in contact with and connected with each other, so the lifting frame 4 can also be lifted and lowered without interfering with the conveyor belts 26 wound on the roller assembly, so that the circuit board can pass smoothly, but in this scheme, because the conveyor boards to be assembled and connected are increased, and the upper surfaces of the conveyor belts 26 have assembly precision requirements during assembly, the assembly and installation of the conveyor belts 26 increase the assembly difficulty and the processing difficulty, if the assembly precision is insufficient, the upper surfaces of the conveyor belts 26 cannot sufficiently contact the lower surface of the circuit board, and in the transportation process, a vibration condition easily occurs, so that the circuit board is damaged in the transportation process, or the circuit board is shifted and cannot enter the station accurately.

As can be seen from fig. 3-5 and fig. 7-8, there are at least two sets of board feeding belts 26 and roller assemblies, the lifting frame 4 is arranged between the two sets of board feeding belts 26, and the circuit board on the conveyor belt assembly is penetrated and lifted from the space between the two sets of board feeding belts 26 when the lifting frame 4 is lifted; every send board conveyor component 2 to go up and be equipped with two sets of board belts 26 at least, each one set of about, lifting frame 4 part sets up between these two sets of board belts 26, in-process that lifting frame 4 rose, can follow the space between these two sets of board belts 26 from up passing and hold up the circuit board on the conveyer belt subassembly down, adopt above-mentioned structure, in-process that the lifting circuit board carried out the test, because lifting frame 4 passes the lower surface of contact circuit board between two sets of board belts 26, therefore the circuit board atress is even, and stable, reduce the vibration that produces when the lifting, avoid electronic component on the circuit board to receive the damage.

Referring to fig. 4-10, the lifting device is a two-stage lifting device, the two-stage lifting device includes a first lifting component 3 and a second lifting component 5 of the lifting frame 4, the second lifting component 5 includes a top pushing plate 51 and a pushing driving device for driving the top pushing plate 51 to move, the upper surface of the top pushing plate 51 has a first pushing inclined plane 511, and when the first lifting component 3 lifts the lifting frame 4 to a working area of the top pushing plate 51, the top pushing plate 51 pushes and supports the lifting frame 4 through the first pushing inclined plane 511; the specific movement process is that, firstly, a tested circuit board enters the inside of the corresponding testing device 61 through the conveying line 8, as can be seen from the exploded view in fig. 5, the blocking motor 11 is arranged on the board conveying testing frame, the circuit board abuts against the blocking motor 11, and the blocking motor 11 plays a role in limiting and positioning, then, the lifting frame 4 is lifted by the first section of lifting assembly 3, so that the circuit board on the conveying line 8 is supported by the lifting frame 4 to ascend, a positioning pin is arranged on the lifting frame 4 to position and limit the circuit board, when the first section of lifting assembly 3 is lifted to a certain height, the second section of lifting assembly 5 drives the top push plate 51 to push and lift the lifting frame 4 for a certain distance through the pushing driving device, and then when the second section of lifting assembly 5 is still, the top push plate 51 supports the lifting frame 4 to test the circuit board; because a large number of different types of test devices 61 exist in the prior art, the test principle is the same, so that the invention can be used in a matched way, and the structural structure of the test devices 61 is not elaborated too much; the two-section type lifting device is divided into two-section type lifting, the first section is rapid lifting, the passing rate of the circuit board is improved, the beat is shortened, and the efficiency is improved; the second section is lifted at a low speed and used for accurately positioning the circuit board, so that each test interface of the circuit board is accurately positioned and uniformly stressed.

The two-section lifting assembly 5 further comprises a pushing connecting plate 52 connected with the pushing plate 51 and an X-axis slide rail assembly 53 connected with the plate feeding testing rack and the pushing connecting plate 52, and the pushing driving device is arranged on the plate feeding testing rack and drives the pushing connecting plate 52 to horizontally move on the X-axis slide rail assembly 53; because the testing device 61 can irregularly generate downward pressure on the circuit board in the process of testing the circuit board, the lifting mechanism of the circuit board has high stability requirement, the lifting frame 4 is pushed and supported by the pushing plate 51, in the process of testing the circuit board, the pushing plate 51 bears the irregularly downward pressure on the lifting frame 4, but because the pressure of the part is not applied to the pushing driving device for driving the pushing plate 51 to move, the pushing connecting plate 52 connected with the pushing plate 51 and the X-axis sliding rail assembly 53 connected with the pushing connecting plate 52 directly bear the downward pressure, and the X-axis sliding rail assembly 53 is directly and fixedly arranged on the board-feeding testing frame, the direction of the pressure is different from the driving direction of the pushing driving device, so that the pushing driving device reduces the occurrence of vibration or instability caused by the compression of the force in the working process of the pushing plate 51.

Referring to the exploded view of fig. 5, it can be seen that the pushing driving device is an X-axis driving member for driving the pushing plate 51 to move horizontally, and the X-axis driving member may be a driving member such as a screw rod or an air cylinder.

Of course, in addition to the above-mentioned pushing driving device using the X-axis driving member, it is also possible to use a driving member that is not used for pushing the pushing plate 51 horizontally or vertically, and it is also possible to cause the pushing plate 51 to push the lifting frame 4.

Referring to fig. 5 and 9, the lifting frame 4 includes a lifting main frame 43 and supporting members 41 arranged at two ends of the lifting main frame 43, a pushing plate 51 pushes the supporting members 41, as can be seen from fig. 7, one section of the lifting assembly 3 lifts through directly lifting the lifting main frame 43, the lifting main frame 43 is provided with a clamping groove at the position matched with one section of the lifting assembly 3, one section of the lifting assembly 3 is provided with a lifting matching block matched with the clamping groove, so that the effect of limiting matching is achieved, and because the positions of one section of the lifting assembly 3 and the pushing plate 51 are different, when the lifting assembly is switched to lift, smooth switching can be achieved without other special matching and connection.

With reference to fig. 9, the support 41 can rotate on the lifting main frame 43 about the axis of the support 41; because the pushing plate 51 needs to push and lift the supporting member 41, as a preferred scheme of the present invention, the supporting member 41 should be a rotating part so that the supporting member 41 can rotate on the lifting main frame 43, thereby reducing the friction force generated by the mutual movement of the supporting member 41 and the pushing plate 51 during the operation, so as to improve the service life and the use effect of the product, and also effectively reducing the vibration generated by the lifting frame 4 during the pushing.

Referring to fig. 4, 5 and 7-8, a Z-axis slide rail assembly 32 is arranged on the plate feeding testing frame, and the lifting frame 4 is connected to the Z-axis slide rail assembly 32 and can slide up and down; send board test rack to include installation curb plate 12, Z axle slide rail set spare 32 includes the Z axle slide rail of fixed connection on installation curb plate 12, and slide from top to bottom at the Z axle slide rail and connect the Z axle slider 321 of lifting frame 4, so that lifting frame 4 can only carry out vertical slip from top to bottom along the installation direction of Z axle slide rail, avoid because of the in-process of lifting leads to the skew of position about the lifting frame 4 takes place because of vibrations, stability is improved, thereby reduce the possibility of electronic component on the circuit board damage, the both ends of lifting body frame 43 still are equipped with spacing cooperation piece 42, spacing cooperation piece 42 is installed in one side of Z axle slider 321, drop when the circuit board unstability, spacing cooperation piece 42 can restrict the direction that drops of Z axle slider 321.

Referring to fig. 10, the upper surface of the top pushing plate 51 is further provided with a supporting plane 512; the supporting plane 512 is adopted to carry out the test of the supporting circuit board, so that the stability during lifting is improved.

Referring to fig. 3-4, 5 and 7-8, the first segment of lifting assembly 3 includes a Z-axis driving member connected to the plate feeding testing frame for driving the lifting frame 4 to move up and down, and as a preferred embodiment of the present invention, the Z-axis driving member is a Z-axis cylinder 31, and the Z-axis cylinder 31 is connected to the plate feeding testing frame through a Z-axis transition plate 311 and pushes the lifting frame 4 to move up and down.

Referring to fig. 1-2 and 14, the board feeding test rack has a detection start area 81 and a detection end area 82, the board feeding test rack is provided with a return-flow conveyor belt assembly 13 located below the conveyor line 8, and the transmission direction of the return-flow conveyor belt assembly 13 is opposite to the transmission direction of the conveyor line 8; the backflow conveyor belt assembly 13 is arranged, so that an operator can directly place the circuit board which is detected completely in the detection end point area 82, the circuit board which is detected completely returns to the detection starting point area 81 again, and transportation and packaging are facilitated.

The detection starting area 81 and the detection end area 82 are respectively and correspondingly provided with an elevator platform 7 for lifting and transporting the circuit board, the circuit board in the detection end area 82 descends through the elevator platform 7 to be butted with the backflow conveying belt assembly 13, so that the circuit board can be transported to the detection starting area 81 through the backflow conveying belt assembly 13; through the setting of backward flow conveyer belt subassembly 13 and lift board 7, can make the circuit board that gets into detection terminal area 82 transport to backward flow conveyer belt subassembly 13 through lift board 7 again on, and transport the circuit board to detection starting point region 81 through backward flow conveyer belt subassembly 13 again, thereby can carry out the secondary test automatically or make things convenient for the workman can directly place the circuit board that awaits measuring or directly take away the circuit board that the test was accomplished in detection starting point region 81, or under the less condition of testing arrangement, the circuit board that does not test gets back to detection starting point region 81 again through lift board 7, queue up through transfer chain 8 once more and detect, improve the detection efficiency of circuit board.

Referring to fig. 11 to 13, the elevator platform 7 includes an elevator frame 71, an elevator plate conveying assembly 74, and an elevator driving assembly 72 connected to the elevator frame 71, wherein the elevator driving assembly 72 drives the elevator plate conveying assembly 74 to ascend and descend; the lifting driving assembly 72 comprises a lifting driving cylinder 721 fixedly connected to the lifting frame 71, the lifting driving cylinder 721 is provided with a lifting driving output shaft 722, the lifting driving output shaft 722 is fixedly connected to the lifting plate conveying assembly 74 through a chain, one end of the chain is fixedly connected to the lifting frame 71, and the other end of the chain is fixedly connected to the lifting plate conveying assembly 74; the lifting and lowering board conveying assembly 74 comprises a lifting and lowering support bracket 73 and a lifting and lowering conveyor belt assembly 743 arranged on the lifting and lowering support bracket 73, wherein the lifting and lowering support bracket 73 comprises a lifting and lowering main plate 731 fixedly connected with the chain, a lifting and lowering support plate 372 and a reinforcing strip 733, the lifting and lowering main plate 731, the lifting and lowering support plate 732 and the reinforcing strip 733 are mutually connected, the lifting and lowering support plate 732 is further provided with a lifting and lowering side plate 734, the lifting and lowering conveyor belt assembly 743 comprises a lifting and lowering motor 741, a lifting and lowering transmission shaft 742 connected with an output shaft of the lifting and lowering motor 741 and a lifting and lowering conveyor belt connected with the lifting and lowering transmission shaft 742, the lifting and lowering conveyor belt is arranged on the lifting and lowering side plate 734, and the lifting and lowering reinforcing strip 733 improves the stability in the lifting and lowering process.

Claims

1. A board feed test line, comprising: the circuit board conveying test device comprises a board conveying test rack, wherein a conveying line (8) used for conveying circuit boards is arranged on the board conveying test rack, a plurality of test devices (61) located on the conveying line (8) are arranged on the board conveying test rack, a lifting frame (4) and a lifting device are respectively arranged at positions, corresponding to the test devices (61), of the board conveying test rack, and the lifting device drives the lifting frame (4) to ascend and support the circuit boards on the conveying line (8) to a working area of the test devices (61).

2. The board conveying test assembly line according to claim 1, wherein the board conveying test rack comprises a plurality of board conveying racks (1), the test devices (61) are respectively arranged on the corresponding board conveying racks (1), the conveying line (8) comprises a plurality of board conveying assemblies (2) which are connected end to end, and each board conveying assembly (2) is correspondingly arranged on one board conveying rack (1).

3. The board feeding test assembly line of claim 2, wherein the board feeding conveying assembly (2) is a conveyor belt assembly, the conveyor belt assembly comprises a conveyor belt main board (24) fixedly connected to the board feeding rack (1), a roller assembly arranged on the conveyor belt main board (24), and a board feeding belt (26) wound on the roller assembly, and the conveyor belt main board (24) is provided with a lifting through hole (21) with an upward opening for placing the lifting frame (4).

4. A board feeding test line according to claim 3, characterised in that there are at least two sets of board feeding belts (26) and roller assemblies, and that the lifting frame (4) is arranged between the two sets of board feeding belts (26), and that the lifting frame (4) when lifted passes through the space between the two sets of board feeding belts (26) and lifts the circuit board on the conveyor belt assembly.

5. The board conveying test assembly line of claim 1, wherein the lifting device is a two-stage lifting device, the two-stage lifting device comprises a lifting frame (4) and a first lifting component (3) and a second lifting component (5), the two-stage lifting component (5) comprises a pushing plate (51) and a pushing driving device for driving the pushing plate (51) to move, the upper surface of the pushing plate (51) is provided with a first pushing inclined plane (511), the lifting frame (4) is lifted by the first lifting component (3) until the working area of the pushing plate (51) is reached, and the pushing plate (51) pushes and supports the lifting frame (4) through the first pushing inclined plane (511).

6. The plate feeding test production line of claim 5, wherein the two-section lifting assembly (5) further comprises a pushing connecting plate (52) connected with the pushing plate (51) and an X-axis slide rail assembly (53) connected with the plate feeding test rack and the pushing connecting plate (52), and the pushing driving device is arranged on the plate feeding test rack and drives the pushing connecting plate (52) to horizontally move on the X-axis slide rail assembly (53).

7. The board feeding test production line of claim 5, wherein the lifting frame (4) comprises a lifting main frame (43) and supporting pieces (41) arranged at two ends of the lifting main frame (43), and the jacking plate (51) jacks the supporting pieces (41).

8. A board feeding test line according to claim 1, characterized in that the board feeding test rack has a detection start area (81) and a detection end area (82), the board feeding test rack is provided with a return conveyor belt assembly (13) below the conveyor line (8), and the transmission direction of the return conveyor belt assembly (13) is opposite to the transmission direction of the conveyor line (8).

9. The board conveying test production line according to claim 8, wherein the starting detection area (81) and the ending detection area (82) are respectively provided with an elevator platform (7) for elevating and transporting the circuit boards, and the circuit boards in the ending detection area (82) are descended by the elevator platform (7) to abut against the reflow conveyor belt assembly (13), so that the circuit boards can be transported to the starting detection area (81) by the reflow conveyor belt assembly (13).

10. The board conveying test assembly line of claim 9, wherein the elevator platform (7) comprises an elevator frame (71), an elevator board conveying assembly (74) and an elevator driving assembly (72) connected to the elevator frame (71), and the elevator driving assembly (72) drives the elevator board conveying assembly (74) to ascend and descend.