Sectional type efficient conveying device for printed circuit board

Abstract

The utility model discloses a printed circuit board sectional type efficient conveying device, which comprises a plurality of conveying belts, a conveying belt and two board bodies, the plurality of conveying belts are connected and arranged in a string shape, a detection switch is arranged on each conveying belt, the input end of each conveying belt is located at the downstream end of the corresponding conveying belt, and when the detection switches detect that a circuit board to be detected on the conveying belts starts to be conveyed, the board bodies are arranged on the conveying belts. And the downstream conveying belt or the conveying belt starts conveying, and the two plate bodies are arranged on the two sides of the multiple conveying belts correspondingly so that the multiple conveying belts can form a whole. According to the sectional type efficient conveying device, the output end of the conveying belt is connected with the feeding tray or the material frame of the circuit board testing machine, the circuit boards to be tested on the conveying belt can be conveyed to the conveying belt step by step in a sectional mode, sectional type conveying of the circuit boards to be tested is formed, the labor intensity of operators can be reduced, and the working efficiency is improved. Moreover, frequent observation of material shortage on the feeding tray or the material rack is not needed, and the overall testing efficiency of the circuit board can be improved.

Description

Technical Field

[0001] The utility model relates to the field of printed circuit board manufacturing, in particular to a segmented high-efficiency conveying device for printed circuit boards. Background Art

[0002] Circuit board functional testing is a testing process for printed circuit boards in the electronics manufacturing industry. It aims to verify whether the electronic components and the entire circuit system on the circuit board are working properly according to the design specifications. This test is crucial to ensuring product quality, reliability and performance.

[0003] In the circuit board tester, the robot (also called an automated handling system or robot) transports the circuit boards in the loading area from top to bottom to the test area for functional testing. This is an important link in the automated production line. After arriving at the test area, the robot accurately places the circuit board on the test fixture or test platform. Once the circuit board is correctly placed, the circuit board tester automatically starts to execute the preset test program. The robot may wait during the test execution, or return to the loading area to continue to transport the next circuit board.

[0004] In an existing circuit board testing machine, the loading area is usually a loading tray or a rack. Before the test, an operator is required to move a stack of circuit boards to be tested to the loading tray or the rack. After the robot has transported all the circuit boards on the loading tray or the rack to the test area to complete the functional test, the operator is required to continue to move a new stack of circuit boards to be tested to the loading tray or the rack so that the robot can continue to transport the circuit boards to the test area for functional testing. This operation mode requires the operator to carry a stack of circuit boards to be tested and place them on the loading tray or the rack at intervals. Not only is the labor density high, but the operator also needs to frequently observe whether there is a shortage of material on the loading tray or the rack. Once the observation interval is slightly longer, it may lead to a shortage of material on the loading tray or the rack, and the circuit board testing machine will idle, resulting in a decrease in the overall test efficiency of the circuit board, affecting production.

[0005] In view of the above problems, it is necessary to study and design a transmission device that can efficiently transport the circuit board to be tested to the loading tray or rack. Utility Model Content

[0006] The purpose of the utility model is to provide a printed circuit board segmented high-efficiency conveying device to solve at least one of the above technical problems.

[0007] According to one aspect of the utility model, a printed circuit board segmented efficient conveying device is provided, comprising:

[0008] A plurality of conveyor belts for conveying the circuit boards to be tested, the plurality of conveyor belts are connected and arranged in a series, and a detection switch is provided on the conveyor belt, and the detection switch is close to the downstream end of the conveyor belt;

[0009] The conveyor belt has an input end located at the downstream end of the conveyor belt, and an output end of the conveyor belt is used to connect with an input end of a circuit board tester. The conveyor belt is used to transport the circuit board to be tested on the conveyor belt to the circuit board tester.

[0010] When the detection switch detects that the circuit board to be tested on the conveyor belt starts to be transported, the downstream conveyor belt or conveyor belt starts to transport, so that the circuit board to be tested on the conveyor belt is transported to the downstream conveyor belt or conveyor belt; and

[0011] Two plate bodies are respectively arranged on both sides of a plurality of conveyor belts so that the plurality of conveyor belts form a whole.

[0012] The utility model discloses a segmented high-efficiency conveying device, in which the output end of the conveyor belt is connected to the input end of the circuit board tester, that is, the loading tray or the material rack; before the circuit board tester works, the operator can move multiple stacks of circuit boards to be tested to multiple conveyor belts and the conveyor belts at one time, and the conveyor belts can first convey the circuit boards to be tested on them to the loading tray or the material rack. When the manipulator of the circuit board tester conveys all the circuit boards to be tested on the loading tray or the material rack to the test area to complete the functional test, the conveyor belt closest to the conveyor belt starts to convey the circuit boards to be tested thereon, and the detection switch on the conveyor belt detects When it is detected that the circuit board to be tested on the conveyor belt starts to be transported, the conveyor belt starts to transport. In this case, the circuit board to be tested on the conveyor belt will be transported to the conveyor belt, and then the conveyor belt will transport the circuit board to be tested from the conveyor belt to the loading tray or rack for the circuit board tester's robot to grab or transport. Then the second conveyor belt closest to the conveyor belt starts to transport the circuit board to be tested on it. When the detection switch on the conveyor belt detects that the circuit board to be tested on the conveyor belt starts to be transported, the conveyor belt closest to the conveyor belt starts to transport. In this case, the second conveyor belt closest to the conveyor belt The circuit board to be tested on the conveyor belt will be transported to the conveyor belt closest to the downstream conveyor belt. When the detection switch on the conveyor belt closest to the conveyor belt detects that the circuit board to be tested on the conveyor belt starts to be transported, the conveyor belt starts to transport. In this case, the circuit board to be tested on the conveyor belt will be transported to the conveyor belt, and then the conveyor belt will transport the circuit board to be tested from the conveyor belt to the loading tray or rack for the robot arm of the circuit board tester to grab or transport. By analogy, the circuit boards to be tested on multiple conveyor belts will be transported to the conveyor belt in sections, forming a sectioned transport of the circuit boards to be tested. The more conveyor belts there are, the more stacks of circuit boards to be tested can be moved to the conveyor belts and the conveyor belts at one time before testing, and the higher the conveying efficiency of the circuit boards to be tested. This not only reduces the labor density of operators, but also eliminates the need to frequently observe whether there is a shortage of materials on the loading tray or the material rack, thereby improving the overall testing efficiency of the circuit boards. In addition, since the two sides of multiple conveyor belts are respectively connected by a plate body to form a whole, it is convenient to carry and move multiple conveyor belts as a whole.

[0013] Preferably, the number of conveyor belts is three, and the three conveyor belts are connected and arranged in a series.

[0014] When the detection switch on the conveyor belt closest to the conveyor belt detects that the circuit board to be tested on the conveyor belt starts to be transported, the conveyor belt starts to transport.

[0015] When the detection switch on the second conveyor belt closest to the conveyor belt detects that the circuit board to be tested on the conveyor belt starts to be transported, the conveyor belt closest to the conveyor belt starts to transport.

[0016] When the detection switch on the conveyor belt farthest from the conveyor belt detects that the circuit board to be tested on the conveyor belt starts to be conveyed, the conveyor belt next closest to the conveyor belt starts to be conveyed.

[0017] Therefore, before the circuit board tester works, the operator can move four stacks of circuit boards to be tested to three conveyor belts and a conveyor belt at one time. The conveyor belt can first transport the circuit boards to be tested on it to the loading tray or material rack. When the manipulator of the circuit board tester transports all the circuit boards to be tested on the loading tray or material rack to the test area to complete the functional test, the conveyor belt closest to the conveyor belt starts to transport the circuit boards to be tested on it. When the detection switch on the conveyor belt detects that the circuit board to be tested on the conveyor belt starts to be transported, the conveyor belt starts to transport. In this way, the circuit board to be tested on the conveyor belt will be transported to the conveyor belt, and then the conveyor belt will transport the circuit board to be tested transported from the conveyor belt to the loading tray or material rack for the manipulator of the circuit board tester to grab or transport, and then the second conveyor belt closest to the conveyor belt starts to transport the circuit board to be tested on it, and the detection switch on the conveyor belt detects that the circuit board to be tested on the conveyor belt starts to be transported. When the circuit board to be tested on the conveyor belt starts to be transported, the conveyor belt closest to the conveyor belt starts to transport, so that the circuit board to be tested on the second conveyor belt closest to the conveyor belt will be transported to the conveyor belt closest to the downstream conveyor belt. When the detection switch on the conveyor belt closest to the conveyor belt detects that the circuit board to be tested on the conveyor belt starts to be transported, the conveyor belt starts to transport, so that the circuit board to be tested on the conveyor belt will be transported to the conveyor belt, and then the conveyor belt transports the circuit board to be tested from the conveyor belt to the loading tray or material rack for the circuit board tester's robot to grab or transport, and so on. The circuit boards to be tested on the three conveyor belts will be gradually transported to the conveyor belt in sections, forming a segmented transportation of the circuit boards to be tested, which can not only reduce the labor density of the operators, but also do not need to frequently observe whether there is a shortage of materials on the loading tray or material rack, and can improve the overall testing efficiency of the circuit boards.

[0018] Preferably, the detection switch is a photoelectric sensor, and a transmitting end and a receiving end of the photoelectric sensor are respectively arranged on both sides of the conveyor belt.

[0019] Therefore, when a stack of circuit boards to be tested on the conveyor belt starts to be transported downstream, when the circuit boards to be tested pass between the transmitting end and the receiving end of the photoelectric sensor, the photoelectric sensor can detect a signal, and the detected signal can be sent to the built-in controller or the controller of the circuit board tester, and the controller controls the conveyor belt or conveyor belt at the downstream end to start conveying.

[0020] Preferably, it also includes a positioning device for clamping and positioning a stack of circuit boards to be tested placed on the conveyor belt, and the positioning device is arranged on the side of the conveyor belt farthest from the conveyor belt.

[0021] The stack of circuit boards to be tested is then conveyed to the conveyor belt closest to the conveyor belt, and finally a stack of circuit boards with flush longitudinal sides is placed on each conveyor belt.

[0022] Preferably, the positioning device includes a side baffle, a card plate, a mounting plate, a guide column and an adjusting bolt, the mounting plate is arranged on one side of the conveyor belt and on the side of the conveying direction of the conveyor belt, the side baffle is arranged on the mounting plate and is arranged perpendicularly to the mounting plate, the side baffle is arranged perpendicularly to the conveying direction of the conveyor belt, one end of the guide column is inserted into the mounting plate and is slidably connected to the mounting plate, the card plate is arranged on the other end of the guide column, the side of the card plate abuts against the side baffle, and the card plate is arranged perpendicularly to the side baffle.

[0023] A transverse sliding groove is arranged on the side baffle plate, and the end of the adjusting bolt passes through the transverse sliding groove and is then screwed into the clamping plate.

[0024] Therefore, when the operator moves a stack of circuit boards to be tested to the conveyor belt farthest from the conveyor belt, the side of the stack of circuit boards to be tested is placed against the side baffle, and then the other side of the stack of circuit boards to be tested is placed against the pallet. Since the pallet and the side baffle are arranged vertically, the pallet and the side baffle can keep the longitudinal sides of the stack of circuit boards to be tested flush. According to the size of the circuit boards to be tested, the adjusting bolts can be loosened, and the pallet can be slid in the direction perpendicular to the conveying direction of the conveyor belt. When the position of the pallet is adjusted, the adjusting bolts are tightened, and the pallet and the side baffles keep the longitudinal sides of the stack of circuit boards to be tested flush. After the adjusting bolts are loosened, the pallet can slide along the transverse grooves on the side baffles, so that the positioning device can be suitable for positioning circuit boards of various sizes and models to be tested, and the guide columns ensure that the pallet can slide smoothly against the side baffles, ensuring that the pallet and the side baffles always remain vertical.

[0025] Preferably, a fixing plate is provided on the clamping plate, and the end of the adjusting bolt passes through the transverse sliding groove and is screwed into the fixing plate.

[0026] Therefore, the existence of the fixing plate can make the thickness of the card plate not too thick. If there is no fixing plate, the adjusting bolt needs to be screwed on the side of the card plate. In this case, the card plate needs to maintain a certain thickness for the end of the adjusting bolt to be screwed in.

[0027] Preferably, it also includes a driving device, which can drive the conveyor belt to reciprocate along a direction perpendicular to the conveying direction of the conveyor belt.

[0028] Therefore, after the printed circuit board segmented high-efficiency conveying device of the utility model is installed on the circuit board testing machine, the width of the loading tray or material rack of the circuit board testing machine is usually narrow. In order to ensure that a stack of circuit boards to be tested on the conveyor belt can be smoothly transported to the loading tray or material rack, under the action of the driving device, the conveyor belt will move a certain distance in a direction perpendicular to the conveying direction of the conveyor belt to ensure that the stack of circuit boards to be tested on the conveyor belt is aligned with the loading tray or material rack of the circuit board testing machine, thereby ensuring that the stack of circuit boards to be tested on the conveyor belt can be smoothly transported to the loading tray or material rack. After the circuit boards to be tested on the conveyor belt are transported to the loading tray or material rack, the driving device drives the conveyor belt to reset, and the reset conveyor belt is aligned with the conveyor belt.

[0029] Preferably, a first height-adjusting foot is provided at the bottom of the conveyor belt, and a second height-adjusting foot is provided at the bottom of the conveyor belt.

[0030] Therefore, the height of the conveyor belt can be adjusted by the first height-adjusting foot as needed, and the height of the conveyor belt can be adjusted by the second height-adjusting foot as needed, to ensure that the output end of the conveyor belt and the input end of the conveyor belt remain flush, so that the circuit board to be tested on the conveyor belt can be smoothly transported to the conveyor belt, and ensure that the circuit board to be tested on the conveyor belt can be smoothly transported to the loading tray or rack.

[0031] Preferably, it also includes a base, which is arranged below the conveyor belt, a slide groove is arranged on the top of the base, and a convex portion adapted to the slide groove is arranged on the bottom of the conveyor belt, the convex portion is accommodated in the slide groove, the conveyor belt can reciprocate along the slide groove, and the length direction of the slide groove is perpendicular to the conveying direction of the conveyor belt.

[0032] Therefore, under the action of the driving device, the conveyor belt can reciprocate along the slide groove on the top of the base, that is, the conveyor belt can reciprocate along a direction perpendicular to the conveying direction of the conveyor belt.

[0033] Preferably, a third height adjustment foot is provided at the bottom of the base.

[0034] Therefore, the height of the base can be adjusted by the third height-adjusting foot as needed, thereby adjusting the height of the conveyor belt to ensure that the input end of the conveyor belt and the output end of the conveyor belt remain flush, so that the circuit board to be tested on the conveyor belt can be smoothly conveyed to the conveyor belt, and ensure that the circuit board to be tested on the conveyor belt can be smoothly conveyed to the loading tray or rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic structural diagram of a printed circuit board segmented high-efficiency conveying device according to one embodiment of the utility model;

[0036] Figure 2 for Figure 1 A top view of a segmented and efficient conveying device for printed circuit boards is shown;

[0037] Figure 3 for Figure 1 The structural schematic diagram of the positioning device in the printed circuit board segmented high-efficiency conveying device shown;

[0038] Figure 4 for Figure 3 A side view of the positioning device shown;

[0039] Figure 5 for Figure 1 The diagram of the use state of the printed circuit board segmented high-efficiency conveying device shown;

[0040] Figure 6 This is a structural schematic diagram of a printed circuit board segmented high-efficiency conveying device according to another embodiment of the utility model;

[0041] Figure 7 for Figure 6 A top view of a printed circuit board segmented efficient conveying device is shown. DETAILED DESCRIPTION

[0042] 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, rather than all of the embodiments.

[0043] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second" and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, unless otherwise specified, "multiple" means two or more; it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a connection between the two elements.

[0044] Embodiment 1:

[0045] Figures 1 to 4 The structure of a segmented and efficient conveying device for printed circuit boards according to one embodiment of the utility model is schematically shown.

[0046] See also Figures 1 to 4 The printed circuit board segmented efficient conveying device comprises a conveyor belt 1, a conveyor belt 2, two board bodies 102 and a positioning device 3.

[0047] See also Figure 2 The conveyor belt 1 can be composed of two rollers and a closed conveyor belt body looped on the two rollers. The conveyor belt 1 can be driven by a first motor 101 through a belt-synchronous wheel structure to drive the two rollers to rotate to achieve the conveying of the conveyor belt 1. The first motor 101 is installed in a box at the bottom of the conveyor belt 1, and the "belt-synchronous wheel" is installed on the side of the conveyor belt 1. The conveyor belt 1 is used to transport the circuit boards to be tested, and the circuit boards to be tested are placed on the conveyor belt 1 in a "stack" style.

[0048] See also Figure 1 and Figure 2 Conveyor belt 2 is located at the downstream end of conveyor belt 1, the input end of conveyor belt 2 is located at the downstream end of conveyor belt 1, the output end of conveyor belt 2 is used to connect with the input end of the circuit board tester, and conveyor belt 2 can transport the circuit board to be tested on conveyor belt 1 to the input end of the circuit board tester, that is, the loading tray or rack.

[0049] See also Figure 1 and Figure 2A detection switch 11 is installed on the conveyor belt 1, and the detection switch 11 is close to the downstream end of the conveyor belt 1. Specifically, the detection switch 11 can be installed on the plates on both sides of the conveyor belt 1. In this embodiment, the detection switch 11 uses a photoelectric sensor, and the transmitting end and the receiving end of the photoelectric sensor are respectively installed on the left plate 102 and the right plate 103 on both sides of the conveyor belt 1.

[0050] The conveyor belt 2 can be driven by the second motor 201 through the belt-synchronous wheel structure to rotate two rollers to achieve the conveying of the conveyor belt 2. The second motor 201 is installed in a box at the bottom of the conveyor belt 2, and the "belt-synchronous wheel" is installed on the side of the conveyor belt 2. The conveyor belt 2 is used to transport the circuit boards to be tested, and the circuit boards to be tested are also placed on the conveyor belt 2 in a "stack" style.

[0051] The detection switch 11 can be connected to the controller of the circuit board tester. The controller of the circuit board tester can control the start and stop of the first motor 101, and can also control the start and stop of the second motor 201. When a stack of circuit boards to be tested on a conveyor belt 1 begins to be transported downstream, when the circuit boards to be tested pass between the transmitting end and the receiving end of the photoelectric sensor on the conveyor belt 1, the photoelectric sensor can detect a signal, and the controller of the circuit board tester can control the corresponding first motor 101 or the second motor 201 to start working.

[0052] See also Figure 1 and Figure 2 In this embodiment, there are three conveyor belts 1, which are connected and arranged in a series. Two plate bodies 102 are respectively installed on both sides of the three conveyor belts 1 to make the three conveyor belts 1 form a whole, which is convenient for the handling and movement of the three conveyor belts 1 as a whole, and then the conveyor belt 2 is installed at the downstream end of the whole; before the circuit board tester works, the operator can move four stacks of circuit boards to be tested to the three conveyor belts 1 and the conveyor belt 2 at one time, and the conveyor belt 2 can first transport the circuit boards to be tested on the loading tray or rack of the circuit board tester. When the manipulator of the circuit board tester transports all the circuit boards to be tested on the loading tray or rack to the test area to complete the functional test, the controller of the circuit board tester controls the conveyor belt 1 closest to the conveyor belt 2 (i.e. Figure 2The first motor 101 of the rightmost conveyor belt 1 works, and the conveyor belt 1 starts to convey the circuit board to be tested thereon. When the circuit board to be tested on the conveyor belt 1 passes between the transmitting end and the receiving end of the photoelectric sensor on the conveyor belt 1, the detection switch 11 on the conveyor belt 1 detects that the circuit board to be tested on the conveyor belt 1 starts to be conveyed. At this time, the controller of the circuit board tester controls the second motor 201 to work, and the conveyor belt 2 starts to convey. The circuit board to be tested on the conveyor belt 1 will be conveyed to the conveyor belt 2, and then the conveyor belt 2 will convey the circuit board to be tested from the conveyor belt 1 to the loading tray or rack of the circuit board tester for the circuit board tester's robot to grab or convey. When the robot of the circuit board tester conveys all the circuit boards to be tested on the loading tray or rack to the test area to complete the functional test, the controller of the circuit board tester controls the second conveyor belt 1 (i.e. Figure 2 The first motor 101 of the middle conveyor belt 1 works, and the second conveyor belt 1 close to the conveyor belt 2 starts to convey the circuit board to be tested thereon. When the circuit board to be tested on the conveyor belt 1 passes between the transmitting end and the receiving end of the photoelectric sensor on the conveyor belt 1, the detection switch 11 on the conveyor belt 1 detects that the circuit board to be tested on the conveyor belt 1 starts to be conveyed. At this time, the controller of the circuit board tester controls the first motor 101 of the conveyor belt 1 closest to the conveyor belt 2 to work, and the conveyor belt 1 closest to the conveyor belt 2 starts to convey. In this way, the circuit board to be tested on the second conveyor belt 1 close to the conveyor belt 2 will be conveyed to the conveyor belt 1 closest to the conveyor belt 2 downstream, and the conveyor belt closest to the conveyor belt When the detection switch 11 on the conveyor belt 1 of 2 detects that the circuit board to be tested on the conveyor belt 1 starts to be transported, the controller of the circuit board tester controls the second motor 201 to work, and the conveyor belt 2 starts to transport. The circuit board to be tested on the conveyor belt 1 closest to the conveyor belt 2 will be transported to the conveyor belt 2, and then the conveyor belt 2 will transport the circuit board to be tested from the conveyor belt 1 to the loading tray or rack of the circuit board tester for the circuit board tester to grab or transport. When the circuit board tester's robot transports all the circuit boards to be tested on the loading tray or rack to the test area to complete the functional test, the controller of the circuit board tester controls the conveyor belt 1 farthest from the conveyor belt 2 (i.e. Figure 2The first motor 101 of the leftmost conveyor belt 1 works, and the conveyor belt 1 farthest from the conveyor belt 2 starts to convey the circuit board to be tested thereon. When the circuit board to be tested on the conveyor belt 1 passes between the transmitting end and the receiving end of the photoelectric sensor on the conveyor belt 1, the detection switch 11 on the conveyor belt 1 detects that the circuit board to be tested on the conveyor belt 1 starts to be conveyed. At this time, the controller of the circuit board tester controls the first motor 101 of the second conveyor belt 1 close to the conveyor belt 2 to work, and the second conveyor belt 1 close to the conveyor belt 2 starts to convey. In this way, the farthest conveyor belt 1 The circuit board to be tested on the conveyor belt 1 closest to the conveyor belt 2 will be transported to the second conveyor belt 1 closest to the conveyor belt 2. The detection switch 11 on the second conveyor belt 1 closest to the conveyor belt 2 detects that the circuit board to be tested on the conveyor belt 1 starts to be transported. At this time, the controller of the circuit board tester controls the first motor 101 of the conveyor belt 1 closest to the conveyor belt 2 to work, and the conveyor belt 1 closest to the conveyor belt 2 starts to transport. In this way, the circuit board to be tested on the second conveyor belt 1 closest to the conveyor belt 2 will be transported to the conveyor belt 1 closest to the conveyor belt 2 downstream. When the detection switch 11 on the conveyor belt 1 near the conveyor belt 2 detects that the circuit board to be tested on the conveyor belt 1 starts to be transported, the controller of the circuit board tester controls the second motor 201 to work, and the conveyor belt 2 starts to transport. The circuit board to be tested on the conveyor belt 1 closest to the conveyor belt 2 will be transported to the conveyor belt 2, and then the conveyor belt 2 will transport the circuit board to be tested from the conveyor belt 1 to the loading tray or rack of the circuit board tester for the circuit board tester to grab or transport it. At this point, the circuit boards to be tested on the three conveyor belts 1 are segmented. The circuit boards to be tested are gradually transported to the conveyor belt 2 in a segmented manner, forming a segmented transportation of the circuit boards to be tested. Compared with the existing operation mode, the operators do not need to move a stack of circuit boards to be tested to the loading tray or the material rack at regular intervals. The more conveyor belts 1 there are, the more stacks of circuit boards to be tested can be moved to the conveyor belts 1 and 2 at one time before the test, and the higher the transportation efficiency of the circuit boards to be tested. This can not only reduce the labor density of the operators, but also eliminate the need to frequently observe whether there is a shortage of materials on the loading tray or the material rack, thereby improving the overall testing efficiency of the circuit boards.

[0053] In other embodiments, according to usage requirements and site requirements, the number of conveyor belts 1 can be two, four or more, and it is sufficient to ensure that two, four or more conveyor belts 1 are connected and arranged in series. Conveyor belt 2 is located at the downstream end of conveyor belt 1, and the input end of conveyor belt 2 is located at the downstream end of conveyor belt 1. The output end of conveyor belt 2 is used to connect with the input end of the circuit board tester. Conveyor belt 2 can transport the circuit board to be tested on conveyor belt 1 to the input end of the circuit board tester, that is, the loading tray or rack. The conveying mode of the circuit board to be tested on conveyor belt 1 is the same as that in embodiment one.

[0054] See also Figure 1 and Figure 2The positioning device 3 is installed on the conveyor belt 1 farthest from the conveyor belt 2 (i.e. Figure 2 The positioning device 3 can be clamped and positioned on the side of the conveyor belt 1 on the far left of the conveyor belt 1, so that the longitudinal sides of each stack of circuit boards to be tested placed on the conveyor belt 1 and transported to the conveyor belt 2 remain flush. In order to ensure that the robot arm of the circuit board tester can accurately grab or transport the circuit boards to be tested placed on the loading tray or the material rack, it is necessary to ensure that the longitudinal sides of each stack of circuit boards to be tested placed on the conveyor belt 1 and the conveyor belt 2 remain flush. The operator can first move a stack of circuit boards to be tested to the conveyor belt 1 farthest from the conveyor belt 2, and then use the positioning device 3 to keep the longitudinal sides of the stack of circuit boards to be tested flush, and then convey the conveyor belt 1 The circuit boards to be tested that are kept flush in the longitudinal direction are transported to the downstream conveyor belt 1, and the downstream conveyor belt 1 continues to transport the stack of circuit boards to be tested downstream until they are transported to the conveyor belt 2. Then the operator moves the second stack of circuit boards to be tested to the conveyor belt 1 farthest from the conveyor belt, and keeps the longitudinal sides of the stack of circuit boards to be tested flush through the positioning device 3. The stack of circuit boards to be tested is transported to the conveyor belt 1 closest to the conveyor belt 2 in the above manner, and finally a stack of circuit boards to be tested with flush longitudinal sides is placed on each conveyor belt 1 and conveyor belt 2, ensuring that the robot hand of the circuit board tester can accurately grab or transport the circuit boards to be tested from the loading tray or rack. Of course, the operator can also use a special alignment fixture to place four stacks of circuit boards to be tested that are kept flush in the longitudinal direction on three conveyor belts 1 and conveyor belt 2 at one time. This placement method is usually difficult to ensure that the sides of each stack of circuit boards to be tested remain flush, and the use of the positioning device 3 in the utility model can ensure that the sides of each stack of circuit boards to be tested remain flush.

[0055] See also Figure 3 and Figure 4 The specific structure of the positioning device 3 can be: the positioning device 3 includes a side baffle 31, a clamping plate 32, a mounting plate 33, a guide column 34 and an adjusting bolt 35.

[0056] refer to Figure 1 The mounting plate 33 is fixed on the plate body 102 on the side of the conveyor belt 1 farthest from the conveyor belt 2. The mounting plate 33 is located on one side of the conveyor belt 1 in the conveying direction. Figure 3 and Figure 4 The side baffle 31 is fixed on the mounting plate 33, the side baffle 31 is arranged vertically with the mounting plate 33, and the side baffle 31 is arranged vertically with the conveying direction of the conveyor belt 1 ( Figure 1The guide post 34 is inserted into the mounting plate 33 at one end, and the guide post 34 is slidably connected to the mounting plate 33. The other end of the guide post 34 is fixed to the card plate 32. The side of the card plate 32 is against the side baffle 31. The card plate 32 and the side baffle 31 are arranged vertically. A transverse groove 311 is formed on the side baffle 31. The end of the adjusting bolt 35 passes through the transverse groove 311 and is rotated in the card plate 32. In order to prevent the thickness of the card plate 32 from being too thick, a fixing plate 321 is fixed or integrally formed on the card plate 32. The end of the joint bolt 35 passes through the transverse sliding groove 311 and is screwed into the fixing plate 321; after loosening the adjusting bolt 35, the card plate 32 can slide against the side baffle plate 31 to adjust the position of the card plate 32. When the position of the card plate 32 is adjusted, the adjusting bolt 35 is tightened. After the adjusting bolt 35 is tightened, the card plate 32 cannot slide easily. When the card plate 32 slides against the side baffle plate 31, the adjusting bolt 35 slides in the transverse sliding groove 311 synchronously. The length of the transverse sliding groove 311 can limit the adjustment range of the position of the card plate 32. When the operator moves a stack of circuit boards to be tested to the conveyor belt 1 farthest from the conveyor belt 2, the side of the stack of circuit boards to be tested is pressed against the side baffle 31, and then the other side of the stack of circuit boards to be tested is pressed against the card plate 32. Since the card plate 32 and the side baffle 31 are arranged vertically, the card plate 32 and the side baffle 31 can keep the longitudinal side of the stack of circuit boards to be tested flush. According to the size of the circuit boards to be tested, the adjusting bolts 35 can be loosened to slide in the direction perpendicular to the conveying direction of the conveyor belt 1. The card plate 32, when the position of the card plate 32 is adjusted, tighten the adjusting bolt 35, the card plate 32 and the side baffle 31 keep the longitudinal sides of the stack of circuit boards to be tested flush, because after the adjusting bolt 35 is loosened, the card plate 32 can slide along the transverse slide groove 311 on the side baffle 31, so that the positioning device 3 can be suitable for positioning circuit boards to be tested of various sizes and models, and the guide column 34 ensures that the card plate 32 can slide smoothly against the side baffle 31, ensuring that the card plate 32 and the side baffle 31 always remain vertical.

[0057] See also Figure 4 The number of the transverse slide groove 311 and the number of the adjusting bolt 35 are both three, so as to ensure that the clamping plate 32 cannot slide easily when the adjusting bolt 55 is tightened.

[0058] See also Figure 4 There are two guide posts 34 , and the two guide posts 34 can ensure that the card plate 32 slides smoothly against the side baffle 31 .

[0059] See also Figure 1The two sides of the three conveyor belts 1 are connected to form a whole through a plate body 102, and the four corners of the bottom of the whole are respectively installed with first height adjustment feet 12, and the four corners of the bottom of the conveyor belt 2 are respectively installed with second height adjustment feet 22. The height of the conveyor belt 1 can be adjusted by the first height adjustment feet 12 as needed, and the height of the conveyor belt 2 can be adjusted by the second height adjustment feet 22 as needed to ensure that the output end of the conveyor belt 1 and the input end of the conveyor belt 2 are kept flush, so that the circuit board to be tested on the conveyor belt 1 can be smoothly transported to the conveyor belt 2, and ensure that the circuit board to be tested on the conveyor belt 2 can be smoothly transported to the loading tray or rack of the circuit board tester.

[0060] Figure 5 Schematically shows Figure 1 The printed circuit board segmented high-efficiency conveying device is shown in use.

[0061] The operator first moves a stack of circuit boards 100 to be tested to the conveyor belt 1 farthest from the conveyor belt 2, and then keeps the longitudinal sides of the stack of circuit boards 100 to be tested flush by the positioning device 3, and then transports the circuit boards 100 to be tested that are kept flush in the longitudinal direction on the conveyor belt 1 to the downstream conveyor belt 1, and the downstream conveyor belt 1 continues to transport the stack of circuit boards 100 to the downstream until it is transported to the conveyor belt 2, and then the operator moves the second stack of circuit boards 100 to the conveyor belt 1 farthest from the conveyor belt, and keeps the longitudinal sides of the stack of circuit boards 100 to be tested flush by the positioning device 3, and transports the stack of circuit boards 100 to the conveyor belt 1 closest to the conveyor belt 2 in the above manner, and finally a stack of circuit boards 100 to be tested that are kept flush in the longitudinal sides is placed on each conveyor belt 1 and the conveyor belt 2 ( Figure 5The output end of the conveyor belt 2 is connected to the loading tray or rack of the circuit board tester; the conveyor belt 2 can first convey the circuit board 100 to be tested on it along the F1 direction to the loading tray or rack of the circuit board tester. When the manipulator of the circuit board tester conveys all the circuit boards to be tested on the loading tray or rack to the test area to complete the functional test, the controller of the circuit board tester controls the conveyor belt 1 closest to the conveyor belt 2 to start conveying the circuit board 100 to be tested thereon along the F2 direction. The controller of the circuit board tester controls the conveyor belt 2 to start conveying as well. The circuit board 100 to be tested on the conveyor belt 1 closest to the conveyor belt 2 is conveyed to the conveyor belt 2, and then the conveyor belt 2 outputs the circuit board to be tested conveyed from the conveyor belt 1 closest to the conveyor belt 2. The circuit board 100 to be tested on the second conveyor belt 1 close to the conveyor belt 2 is also started to be conveyed along F3, and the controller of the circuit board tester controls the conveyor belt 1 closest to the conveyor belt 2 to start conveying. The circuit board 100 to be tested on the second conveyor belt 1 close to the conveyor belt 2 will be conveyed to the conveyor belt 1 closest to the conveyor belt 2 downstream, and then the controller of the circuit board tester controls the conveyor belt 2 to start conveying, and the circuit board to be tested on the conveyor belt 1 closest to the conveyor belt 2 will be conveyed to the conveyor belt 1 closest to the conveyor belt 2 downstream. Then, conveyor belt 2 transports the circuit board to be tested from conveyor belt 1 to the loading tray or rack of the circuit board tester for the circuit board tester's manipulator to grab or transport. When the manipulator of the circuit board tester transports all the circuit boards to be tested on the loading tray or rack to the test area to complete the functional test, the controller of the circuit board tester controls the conveyor belt 1 farthest from conveyor belt 2 to start transporting the circuit board 100 to be tested thereon along the F4 direction. The controller of the circuit board tester controls the conveyor belt 1 closest to the second conveyor belt 2 to start transporting. The circuit board to be tested on the conveyor belt 1 farthest from conveyor belt 2 will be transported to the second conveyor belt 1 close to conveyor belt 2. Then the controller of the circuit board tester controls the conveyor belt 1 closest to conveyor belt 2 to start transporting. , the circuit board to be tested on the second conveyor belt 1 close to the conveyor belt 2 will be transported to the conveyor belt 1 closest to the conveyor belt 2, and then the controller of the circuit board tester controls the conveyor belt 2 to start conveying, and the circuit board to be tested on the conveyor belt 1 closest to the conveyor belt 2 will be transported to the conveyor belt 2, and then the conveyor belt 2 will transport the circuit board to be tested from the conveyor belt 1 to the loading tray or rack of the circuit board tester for the circuit board tester to be grabbed or transported by the manipulator of the circuit board tester. At this point, the three stacks of circuit boards to be tested 100 on the three conveyor belts 1 are gradually transported to the conveyor belt 2 in sections, forming a sectioned transportation of the circuit boards to be tested. Compared with the existing operation mode, it is not necessary for the operator to move a stack of circuit boards to be tested and place them on the loading tray or rack every once in a while.It can not only reduce the labor density of operators, but also eliminate the need to frequently check whether there is a shortage of materials on the loading tray or the material rack, which can improve the overall test efficiency of the circuit board. In addition, since the two sides of the three conveyor belts 1 are connected to form a whole through a plate body 102, it is convenient to carry and move the three conveyor belts 1 as a whole.

[0062] Embodiment 2

[0063] Figure 6 and Figure 7 The structure of a segmented and efficient conveying device for printed circuit boards according to another embodiment of the utility model is schematically shown.

[0064] See also Figure 6 and Figure 7 The printed circuit board segmented efficient conveying device comprises a conveyor belt 1, a conveyor belt 2, two board bodies 102, a positioning device 3, a driving device 4 and a base 5.

[0065] In this embodiment, the structures of the transmission belt 1 and the positioning device 3 and the number of the transmission belts 1 are the same as those in the first embodiment and will not be described in detail herein.

[0066] See also Figure 6 The base 5 is installed below the conveyor belt 2. A slide groove 51 is formed on the top of the base 5. A convex portion 21 adapted to the slide groove 51 is formed on the bottom of the conveyor belt 2. The convex portion 21 is accommodated in the slide groove 51. The conveyor belt 2 can reciprocate along the slide groove 51. The length direction of the slide groove 51 is perpendicular to the conveying direction of the conveyor belt 2. The longitudinal section of the slide groove 51 can be trapezoidal (that is, the opening size at the top of the slide groove 51 is smaller than the width size at the bottom), and the longitudinal section of the convex portion 21 is an inverted trapezoidal shape adapted to the shape of the slide groove 51. In this way, the convex portion 21 can be prevented from escaping from the slide groove 51 in the longitudinal direction. The number of the slide grooves 51 and the convex portion 21 are both two. The two convex portions 21 are respectively accommodated in the two slide grooves 51. The two slide grooves 51 can ensure that the conveyor belt 2 slides smoothly on the base 5.

[0067] The conveying mode of the three conveyor belts 1 and the conveyor belt 2 for the circuit board to be tested is the same as that in the first embodiment, and will not be repeated here.

[0068] See also Figure 7 The driving shaft of the driving device 4 is installed on the side of the conveyor belt 2. The driving device 4 can be a linear motor or a cylinder. The driving device 4 can drive the conveyor belt 2 to reciprocate on the base 5, that is, the driving device 4 can drive the conveyor belt 2 to reciprocate in a direction perpendicular to the conveying direction of the conveyor belt 2.

[0069] See also Figure 6 and Figure 7After the sectionalized high-efficiency conveying device for printed circuit boards of the utility model is installed on the circuit board test machine, the conveyor belt 2 is located at the side of a side plate 6 of the circuit board test machine, and the driving device 4 is installed on the side plate 6. A notch 61 is formed on the side plate 6 for the conveyor belt 2 to reciprocate through. The driving device 4 can drive the conveyor belt 2 to be inserted into the notch 61 and to exit from the notch 61. Usually, the width of the loading tray or rack of the circuit board test machine is narrow. In order to ensure that a stack of circuit boards to be tested on the conveyor belt 2 can be smoothly transported to the loading tray or rack along the F5 direction, the driving device 4 is used to drive the conveyor belt 2 to be inserted into the notch 61 and to exit from the notch 61. Under the action of the driving device 4, the conveyor belt 2 will move a certain distance in the direction perpendicular to the conveying direction of the conveyor belt 2, that is, in the direction of F6, that is, a part of the conveyor belt 2 is inserted into the gap 61, ensuring that a stack of circuit boards to be tested on the conveyor belt 2 is aligned with the loading tray or rack of the circuit board testing machine, thereby ensuring that the stack of circuit boards to be tested on the conveyor belt 2 can be smoothly transported to the loading tray or rack. After the circuit boards to be tested on the conveyor belt 2 are transported to the loading tray or rack, the driving device 4 drives the conveyor belt 2 to reset in the opposite direction of F6, and the reset conveyor belt 2 is aligned with the conveyor belt 1.

[0070] See also Figure 6 The four corners of the bottom of the base 5 are respectively installed with third height adjustment feet 52. The height of the base 5 can be adjusted by the third height adjustment feet 52 as needed, so as to adjust the height of the conveyor belt 2 to ensure that the input end of the conveyor belt 2 and the output end of the conveyor belt 1 remain flush, so that the circuit board to be tested on the conveyor belt 1 can be smoothly transported to the conveyor belt 2, and ensure that the circuit board to be tested on the conveyor belt 2 can be smoothly transported to the loading tray or rack.

[0071] The above are only some embodiments of the present invention, which are intended to illustrate the technical means of the present invention, but not to limit the technical scope of the present invention. Those skilled in the art can make obvious improvements to the present invention in combination with existing common knowledge, which all fall within the protection scope of the present invention.

Claims

1. The printed circuit board segmented high-efficiency conveying device is characterized by: include: A plurality of conveyor belts for conveying the circuit boards to be tested, the plurality of conveyor belts are connected and arranged in series, the conveyor belts are provided with detection switches, and the detection switches are close to the downstream end of the conveyor belts; A conveyor belt, wherein the input end of the conveyor belt is located at the downstream end of the conveyor belt, and the output end of the conveyor belt is used to connect with the input end of the circuit board tester, and the conveyor belt is used to transport the circuit board to be tested on the conveyor belt to the circuit board tester. When the detection switch detects that the circuit board to be tested on the conveyor belt starts to be transported, the downstream conveyor belt or conveyor belt starts to transport, so that the circuit board to be tested on the conveyor belt is transported to the downstream conveyor belt or conveyor belt; and Two plate bodies are respectively arranged on both sides of the plurality of conveyor belts so that the plurality of conveyor belts form a whole.

2. The printed circuit board segmented high-efficiency conveying device according to claim 1, characterized in that: There are three conveyor belts, which are connected and arranged in a series. When the detection switch on the conveyor belt closest to the conveyor belt detects that the circuit board to be tested on the conveyor belt starts to be transported, the conveyor belt starts to transport. When the detection switch on the second conveyor belt closest to the conveyor belt detects that the circuit board to be tested on the conveyor belt starts to be transported, the conveyor belt closest to the conveyor belt starts to transport. When the detection switch on the conveyor belt farthest from the conveyor belt detects that the circuit board to be tested on the conveyor belt starts to be conveyed, the conveyor belt next closest to the conveyor belt starts to be conveyed.

3. The printed circuit board segmented high-efficiency conveying device according to claim 1, characterized in that: The detection switch is a photoelectric sensor, and the transmitting end and the receiving end of the photoelectric sensor are respectively arranged on both sides of the conveyor belt.

4. The printed circuit board segmented high-efficiency conveying device according to claim 1, characterized in that: It also includes a positioning device for clamping and positioning a stack of circuit boards to be tested placed on the conveyor belt, and the positioning device is arranged on the side of the conveyor belt farthest from the conveyor belt.

5. The printed circuit board segmented high-efficiency conveying device according to claim 4, characterized in that: The positioning device includes a side baffle, a card plate, a mounting plate, a guide column and an adjusting bolt. The mounting plate is arranged on one side of the conveyor belt and on the side of the conveying direction of the conveyor belt. The side baffle is arranged on the mounting plate and is arranged vertically with the mounting plate. The side baffle is arranged vertically with the conveying direction of the conveyor belt. One end of the guide column is inserted into the mounting plate and is slidably connected with the mounting plate. The card plate is arranged on the other end of the guide column. The side of the card plate abuts against the side baffle. The card plate is arranged vertically with the side baffle. The side baffle is provided with a transverse sliding groove, and the end of the adjusting bolt passes through the transverse sliding groove and is rotated in the clamping plate.

6. The printed circuit board segmented high-efficiency conveying device according to claim 5, characterized in that: The clamping plate is provided with a fixing plate, and the end of the adjusting bolt passes through the transverse sliding groove and is then screwed into the fixing plate.

7. The printed circuit board segmented high-efficiency conveying device according to any one of claims 1 to 6, characterized in that: The utility model also comprises a driving device, which can drive the conveyor belt to reciprocate along a direction perpendicular to the conveying direction of the conveyor belt.

8. The printed circuit board segmented high-efficiency conveying device according to claim 1, characterized in that: The bottom of the conveyor belt is provided with a first height-adjusting support foot, and the bottom of the conveyor belt is provided with a second height-adjusting support foot.

9. The printed circuit board segmented high-efficiency conveying device according to claim 7, characterized in that: It also includes a base, which is arranged below the conveyor belt. A slide groove is arranged on the top of the base, and a convex portion adapted to the slide groove is arranged on the bottom of the conveyor belt. The convex portion is accommodated in the slide groove. The conveyor belt can reciprocate along the slide groove, and the length direction of the slide groove is perpendicular to the conveying direction of the conveyor belt.

10. The printed circuit board segmented high-efficiency conveying device according to claim 9, characterized in that: A third height adjustment foot is provided at the bottom of the base.

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