PCBA test equipment with automatic feeding and discharging

Abstract

The utility model provides a kind of PCBA test equipment of automatic in and out, including lower needle plate, in and out subassembly and lower pressure subassembly, in and out subassembly is horizontally moved and is arranged between lower needle plate and lower pressure subassembly, lower pressure subassembly includes pressing plate and the lower pressure drive device of driving pressing plate up and down movement, in and out subassembly includes the load plate that can be elastically moved up and down, load plate is provided with product placement site, push part, perforation, first positioning hole and second positioning hole, push part, first positioning hole and second positioning hole are all set in product placement site outside, and perforation is set in product placement site inside;Pressing plate is provided with upper positioning column, elastic pressure stick and push column, elastic pressure stick is set in product placement site upper side, and upper positioning column is positioned with first positioning hole cooperation, and push column is abutted with push part;Lower needle plate is provided with lower positioning column and probe, and lower positioning column is positioned with second positioning hole cooperation, and probe is inserted into product placement site inside by perforation penetration;The utility model has the advantages of simple structure, easy operation and high positioning accuracy.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to an automatic PCBA testing device that allows for automatic entry and exit. Background Technology

[0002] A testing mechanism for PCBA male connectors includes a frame, an upper carrier board module slidably connected to the frame, an upper pressure plate module located on top of the frame, a test module located on top of the upper pressure plate module and pulsatorically connected to the upper pressure plate module, and a lower pin block module located below the upper pressure plate module. The upper carrier board module, the upper pressure plate module, the test module, and the lower pin block module are configured to cooperate with each other. The upper carrier board module has a placement slot. The test module has a vertically arranged test head and a horizontally arranged pin header. The lower pin block module has probes and a circuit board electrically connected to the probes. Several guide sleeves are mounted on the small carrier plate of the upper carrier board module for precise positioning during the contact process between the lower pin block module, the upper pressure plate test module, and the upper carrier board module. However, the positioning structure of the testing mechanism is too simple and the positioning accuracy is poor. During the process of the upper pressure plate module pressing down and pushing the upper carrier plate module to move down, the product under test is prone to positional deviation, resulting in poor contact between the upper conductive contact and the probe, which in turn affects the accuracy of the test results. Utility Model Content

[0003] The purpose of this invention is to provide an automatic entry and exit testing device with high positioning accuracy and high detection result accuracy.

[0004] To achieve the above objectives, this utility model provides an automatic PCBA testing device, comprising a testing mechanism, which includes a lower pin plate, an entry / exit component, and a pressing component. The lower pin plate and the pressing component are vertically aligned, and the entry / exit component is positioned between the lower pin plate and the pressing component and is horizontally movable. The pressing component includes a pressure plate and a pressing drive device, which drives the pressure plate to move vertically. The entry / exit component includes a carrier plate that can move vertically elastically. The carrier plate has a product placement position, a pusher, a through hole, a first positioning hole, and a second positioning hole. The pusher, the first positioning hole, and the second positioning hole are all located outside the product placement position, and the through hole is located inside the product placement position and penetrates the carrier plate vertically. The pressure plate has an upper positioning post, an elastic pressure bar, and a pusher post. The elastic pressure bar is located above the product placement position, the upper positioning post is positioned and engaged with the first positioning hole, and the pusher post abuts against the pusher. The lower pin plate has a lower positioning post and a probe. The lower positioning post is positioned and engaged with the second positioning hole, and the probe penetrates the through hole and extends into the product placement position.

[0005] As can be seen from the above scheme, during the downward movement of the pressure plate, the upper positioning post first engages with the first positioning hole to ensure accurate positioning of the pressure plate and the carrier plate; then, the elastic pressure bar presses down on the product to be tested to prevent the product from shifting and ensure accurate positioning; next, the push post pushes the carrier plate downward, and during this process, the elastic pressure bar simultaneously pushes the product to be tested downward; then, the second positioning hole of the carrier plate engages with the lower positioning post to ensure that the perforation of the carrier plate aligns with the probe on the lower needle plate, allowing the probe to accurately penetrate the carrier plate and effectively connect with the conductive contact of the product to be tested, ensuring the accuracy of the test results. This utility model also has the advantages of simple structure and convenient operation.

[0006] A further proposed solution is that the distance by which the upper positioning post protrudes downward from the bottom wall of the pressure plate is greater than the distance by which the elastic pressure bar protrudes downward from the bottom wall of the pressure plate; and the distance by which the elastic pressure bar protrudes downward from the bottom wall of the pressure plate is greater than the distance by which the jacking post protrudes downward from the bottom wall of the pressure plate.

[0007] As can be seen from the above scheme, the above settings ensure that the upper positioning column and the first positioning hole are positioned and engaged before the elastic pressure bar comes into contact with the product to be tested; after the elastic pressure bar comes into contact with the product to be tested, the push column comes into contact with the carrier plate and pushes the carrier plate downward. On the one hand, this helps to reduce the pressure of the elastic pressure bar, and on the other hand, it facilitates precise control of the downward movement distance of the carrier plate.

[0008] A further option is to also provide a fixed pressure bar on the pressure plate. The fixed pressure bar is positioned above the product placement position, and the distance by which the fixed pressure bar protrudes downward from the bottom wall of the pressure plate is less than the distance by which the elastic pressure bar protrudes downward from the bottom wall of the pressure plate.

[0009] As can be seen from the above scheme, through the above settings, during the process of the push column pushing the carrier plate downward, the fixed pressure bar can push the product under test downward, so as to reduce the force on the elastic pressure bar and prevent it from breaking.

[0010] A further proposed solution is to make the distance by which the lower positioning post protrudes upward from the top wall of the lower needle plate is greater than the distance by which the probe protrudes upward from the top wall of the lower needle plate.

[0011] As can be seen from the above scheme, the above settings ensure that the lower positioning post is positioned and engaged with the second positioning hole before the probe is inserted into the hole, thus avoiding the probe breaking due to misalignment.

[0012] A further option is that the carrier plate is also equipped with product positioning posts, multiple limiting posts, and multiple supporting posts. The product positioning posts are set inside the product placement position, the multiple limiting posts are set around the product placement position, and the multiple supporting posts are all set inside the product placement position.

[0013] As can be seen from the above scheme, by setting limit posts, it is convenient for staff to quickly put the product to be tested, thus improving work efficiency; by setting product positioning posts, it is convenient for the product positioning holes of the product to be tested to match the product positioning posts, thus ensuring the accurate positioning of the product to be tested; and by setting support posts, it is used to support the product to be tested.

[0014] A further embodiment includes a translation drive device, a movable frame, multiple elastic elements, and multiple floating elements in the inlet / outlet assembly. The carrier plate is movably connected to the movable frame via multiple floating elements, and the elastic elements elastically abut against the carrier plate and the movable frame. The translation drive device drives the movable frame and the carrier plate to move horizontally together.

[0015] A further design includes a floating component comprising a connecting column and a sliding sleeve. The sliding sleeve is fitted onto the outside of the connecting column. The lower part of the connecting column is connected to the movable frame, and the upper part of the connecting column passes through the carrier plate. The sliding sleeve is connected to the carrier plate, allowing both the carrier plate and the sliding sleeve to move up and down along the connecting column.

[0016] A further solution is to also provide a sliding buckle on the carrier plate, which is fixed to the sliding sleeve via the sliding buckle.

[0017] As can be seen from the above solution, by setting a sliding buckle, it is easy to connect with the sliding sleeve and achieve quick assembly and disassembly.

[0018] A further embodiment includes a test mechanism that also includes a base box assembly and a panel. The panel is mounted on the base box assembly, and the lower needle plate, inlet / outlet assembly, and lowering assembly are all mounted on the panel. The lowering assembly also includes a fixed frame and a lifting frame. The lifting frame is movably connected to the fixed frame, the pressure plate is mounted on the lifting frame, and the lowering drive device is mounted inside the base box assembly. The drive shaft of the lowering drive device passes upward through the panel and connects to the lifting frame.

[0019] A further solution is to make the pressure plate and the lifting frame detachably connected. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the entire machine according to an embodiment of this utility model.

[0021] Figure 2 This is a structural diagram of the testing mechanism of this utility model embodiment without the protective cover.

[0022] Figure 3 This is a structural diagram of the test mechanism of this utility model embodiment, omitting the bottom box assembly from a first-view perspective.

[0023] Figure 4 This is a structural diagram of the test mechanism of this utility model embodiment, omitting the bottom box assembly from a second perspective.

[0024] Figure 5 This is a front view of the test mechanism of this utility model embodiment, omitting the bottom box assembly.

[0025] Figure 6 This is an exploded view of the carrier plate and the product under test in an embodiment of this utility model.

[0026] Figure 7 This is a structural diagram of the lower needle plate in an embodiment of this utility model.

[0027] Figure 8 This is a structural diagram of the pressure plate in an embodiment of this utility model.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0029] See Figure 1 The automatic PCBA testing equipment provided in this embodiment includes a testing mechanism 10, a machine base 20, and a display screen 30. Both the testing mechanism 10 and the display screen 30 are mounted on the machine base 20.

[0030] See Figures 2 to 4 and combined Figure 1 The testing mechanism 10 includes a base box assembly 1, a panel 2, a protective cover 3, a lower needle plate 4, an infeed / outfeed assembly 5, and a pressing assembly 6. The protective cover 3, lower needle plate 4, infeed / outfeed assembly 5, and pressing assembly 6 are all mounted on the panel 2. The lower needle plate 4 and pressing assembly 6 are vertically aligned, and the infeed / outfeed assembly 5 is positioned between the lower needle plate 4 and pressing assembly 6, and is horizontally movable. The infeed / outfeed assembly 5 has upper and lower material loading / unloading positions and a working position. The working position corresponds vertically to the lower needle plate 4 and pressing assembly 6, and the upper and lower material loading / unloading positions are located on one side of the working position for easy material loading and unloading by operators. The protective cover 3 is located outside the pressing assembly 6.

[0031] Panel 2 is mounted on the base box assembly 1. A clearance groove 21 is provided on one side of panel 2, and the clearance groove 21 extends through panel 2 vertically.

[0032] The pressing assembly 6 includes a fixed frame 61, a lifting frame 62, a pressure plate 63, and two pressing drive devices 64. The lifting frame 62 is vertically movably connected to the fixed frame 61, and the pressure plate 63 is mounted on the lifting frame 62. The two pressing drive devices 64 are respectively located on both sides inside the base assembly 1. The drive shaft of the pressing drive device 64 passes upward through the panel 2 and connects to the lifting frame 62. The pressing drive device 64 can be a pneumatic cylinder or a hydraulic cylinder, and it drives the lifting frame 62 and the pressure plate 63 to move vertically. Specifically: The mounting bracket 61 includes a top plate 611 and four guide posts 612. The four guide posts 612 are respectively located on both sides of the panel 2; the top plate 611 includes a first connecting part and two second connecting parts, the first connecting part is connected between the two second connecting parts, and the second connecting parts are connected to multiple guide posts 612 on the same side.

[0033] The lifting frame 62 includes a first plate 621, a reinforcing plate 623, and two second plates 622. The first plate 621 is connected between the first ends of the two second plates 622, and the reinforcing plate 623 is connected between the middle or the second end of the two second plates 622. Two linear bearings 624 are provided on the second plate 622, and the linear bearings 624 are slidably engaged with the corresponding guide posts 612.

[0034] The pressure plate 63 is detachably connected to the lifting frame 62. Specifically, the second plate 622 is provided with a sliding groove 6221 and a locking device 6222. The two sliding grooves 6221 are arranged opposite to each other, and the two sides of the pressure plate 63 are respectively arranged in the corresponding sliding grooves 6221. The locking device 6222 includes a vertically movable pin, which passes through the second plate 622 and is inserted into the locking hole of the pressure plate 63 to prevent the pressure plate 63 from disengaging from the sliding groove 6221.

[0035] The inlet / outlet assembly 5 includes a translation drive device 51, a movable frame 52, a movable plate 55, a carrier plate 53, two guide rails 54, multiple elastic elements 56, and multiple floating elements 57. The two guide rails 54 are arranged parallel to each other on both sides of the panel 2, and the movable frame 52 is slidably connected to the two guide rails 54. The carrier plate 53 is movably connected to the movable frame 52 via multiple floating elements 57, and the elastic elements 56 elastically abut against the carrier plate 53 and the movable frame 52, allowing the carrier plate 53 to move elastically up and down. The movable plate 55 is disposed within the clearance groove 21 and is connected to the drive ends of the movable frame 52 and the translation drive device 51, respectively. The translation drive device 51 is disposed on the bottom wall of the panel 2 and can be a pneumatic cylinder or a hydraulic cylinder. The translation drive device 51 drives the movable frame 52 and the carrier plate 53 to move back and forth between the loading / unloading position and the working position via the movable plate 55.

[0036] The floating component 57 includes a connecting column and a sliding sleeve. The sliding sleeve is fitted onto the outside of the connecting column. The lower part of the connecting column is connected to the movable frame 52, and the upper part of the connecting column passes through the carrier plate 53. The sliding sleeve is connected to the carrier plate 53, and there is a large gap between the sliding sleeve and the connecting column, allowing the carrier plate 53 to move the sliding sleeve relative to the connecting column to adjust its horizontal position. This facilitates precise positioning through the positioning engagement of the lower positioning column 41 and the second positioning hole 535. The elastic component 56 is preferably a spring, which is fitted onto the outside of the connecting column. The carrier plate 53 and the sliding sleeve can move up and down along the connecting column.

[0037] The carrier plate 53 is also provided with multiple sliding latches 58, which are fixedly connected to the sliding sleeve. Each sliding latch includes a fixed latch and a sliding latch. The fixed latch is fixed to the carrier plate 53 by screws, and the sliding latch is horizontally slidably connected to the fixed latch. One end of the sliding latch has a slot, which is detachably connected to the sliding sleeve. When the slot engages with the sliding sleeve, the sliding sleeve can drive the carrier plate 53 to move up and down via the sliding latches 58.

[0038] See Figure 6 The carrier plate 53 is provided with a product placement position 531, a push part 532, multiple through holes 533, two first positioning holes 534 and two second positioning holes 535.

[0039] The pushing part 532 is disposed on the outside of the product placement position 531. The pushing part 532 can be the top wall of the carrier plate 53 other than the product placement position 531, or it can be a protrusion disposed on the top wall of the carrier plate 53, which is disposed on the outside of the product placement position 531. In this embodiment, the former is preferred.

[0040] Multiple perforations 533 are set in the product placement position 531 and penetrate the carrier plate 53 vertically. The perforations 533 are set one by one with the probe 42 of the lower needle plate 4 and the conductive contact on the product under test 7, so as to connect the product under test 7 to the detection circuit.

[0041] Two first positioning holes 534 and two second positioning holes 535 are all located on the outside of the product placement position 531. Specifically, the two first positioning holes 534 are respectively located on two opposite corners of the carrier plate 53, and the two second positioning holes 535 are respectively located on the other two opposite corners of the carrier plate 53.

[0042] The carrier plate 53 is also provided with two product positioning posts 538, multiple limiting posts 536, and multiple supporting posts 537. The two product positioning posts 538 are respectively located diagonally on the product placement positions 531, used for positioning and engaging with the product positioning holes of the product to be tested 7. The multiple limiting posts 536 are respectively located around the product placement positions 531, forming the product placement positions 531 between them; the multiple supporting posts 537 are all located within the product placement positions 531. The product to be tested 7 is placed between the multiple limiting posts 536 and on the supporting posts 537.

[0043] Combination Figures 5 to 8 The pressure plate 63 is provided with an elastic pressure bar 631, a fixed pressure bar 632, a push column 633 and two upper positioning columns 634.

[0044] Both the elastic pressure bar 631 and the fixed pressure bar 632 are positioned directly above the product placement position 531, preferably diagonally opposite each other. The length of the elastic pressure bar 631 is elastically extendable. The elastic pressure bar 631 is an externally purchased component, and its internal structure will not be described in detail here. The fixed pressure bar 632 protrudes downward from the bottom wall of the pressure plate 63 by a smaller distance than the elastic pressure bar 631 protrudes downward from the bottom wall of the pressure plate 63.

[0045] Two upper positioning posts 634 are respectively set on opposite corners of the pressure plate 63, and the upper positioning posts 634 are positioned and engaged with the first positioning hole 534. The distance by which the upper positioning posts 634 protrude downward from the bottom wall of the pressure plate 63 is greater than the distance by which the elastic pressure bar 631 protrudes downward from the bottom wall of the pressure plate 63.

[0046] The horizontal projection of the push column 633 falls on the outside of the product placement position 531, and is used to abut against the push part 532. The distance by which the elastic pressure bar 631 protrudes downward from the bottom wall of the pressure plate 63 is greater than the distance by which the push column 633 protrudes downward from the bottom wall of the pressure plate 63.

[0047] The lower needle plate 4 is provided with two lower positioning posts 41 and multiple probes 42. The two lower positioning posts 41 are respectively located diagonally on the lower needle plate 4, and the lower positioning posts 41 are positioned and engaged with the second positioning hole 535. The probes 42 are arranged one-to-one with the through holes 533, and the probes 42 can penetrate through the through holes 533 and extend into the product placement position 531. The distance by which the lower positioning posts 41 protrude upward from the top wall of the lower needle plate 4 is greater than the distance by which the probes 42 protrude upward from the top wall of the lower needle plate 4.

[0048] In one embodiment, a detection circuit is provided in the lower needle plate 4, and the lower part of a plurality of probes 42 is electrically connected to the detection circuit.

[0049] In another embodiment, a circuit board is provided below the lower needle plate 4, and a detection circuit is provided inside the circuit board. The lower parts of the plurality of probes 42 are electrically connected to the detection circuit.

[0050] When the pressure plate 63 moves down, the upper positioning post 634 first engages with the first positioning hole 534; then, the elastic pressure bar 631 abuts against and compresses the product under test 7 on the carrier plate 53; next, the push post 633 and the fixed pressure bar 632 abut against the carrier plate 53 and the product under test 7 respectively, to push the carrier plate 53 and the product under test 7 downward; then, the lower positioning post 41 engages with the second positioning hole 535; next, the probe 42 passes through the through hole 533 and abuts against the product under test 7, connecting the product under test 7 to the circuit under test.

[0051] In summary, during the downward movement of the pressure plate 63 of this invention, the upper positioning post 634 first engages with the first positioning hole 534 to ensure accurate positioning of the pressure plate 63 and the carrier plate 53. Then, the elastic pressure bar 631 presses down on the product to be tested 7 to prevent movement and ensure accurate positioning. Next, the push post 633 pushes the carrier plate 53 downward, and during this process, the elastic pressure bar 631 simultaneously pushes the product to be tested 7 downward. Then, the second positioning hole 535 of the carrier plate 53 engages with the lower positioning post 41 to ensure that the through hole 533 of the carrier plate 53 is aligned with the probe 42 on the lower needle plate 4, allowing the probe 42 to accurately penetrate the conductive contact of the carrier plate 53 and effectively connect with the conductive contact of the product to be tested 7, thus ensuring the accuracy of the test results. This invention also has the advantages of simple structure and convenient operation.

[0052] Finally, it should be emphasized that the above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic PCBA testing device with in-and-out mechanism, comprising a testing mechanism including a lower pin plate, an in-and-out component, and a pressing component, wherein the lower pin plate and the pressing component are vertically correspondingly arranged, the in-and-out component is disposed between the lower pin plate and the pressing component, and the in-and-out component is horizontally movable, and the pressing component includes a pressure plate and a pressing drive device, wherein the pressing drive device drives the pressure plate to move vertically, characterized in that: The inlet / outlet assembly includes a carrier plate that can move up and down elastically. The carrier plate is provided with a product placement position, a pushing part, a through hole, a first positioning hole and a second positioning hole. The pushing part, the first positioning hole and the second positioning hole are all located outside the product placement position. The through hole is located inside the product placement position and passes through the carrier plate from top to bottom. The pressure plate is provided with an upper positioning post, an elastic pressure bar and a push post. The elastic pressure bar is located above the product placement position. The upper positioning post is positioned and engaged with the first positioning hole. The push post abuts against the push part. The lower needle plate is provided with a lower positioning post and a probe. The lower positioning post is positioned and engaged with the second positioning hole, and the probe extends through the perforation into the product placement position.

2. The automatic PCBA testing equipment according to claim 1, characterized in that: The distance by which the upper positioning post protrudes downward from the bottom wall of the pressure plate is greater than the distance by which the elastic pressure bar protrudes downward from the bottom wall of the pressure plate; The distance by which the elastic pressure bar protrudes downward from the bottom wall of the pressure plate is greater than the distance by which the push column protrudes downward from the bottom wall of the pressure plate.

3. The automatic PCBA testing equipment according to claim 2, characterized in that: The pressure plate is also provided with a fixed pressure bar, which is located above the product placement position, and the distance by which the fixed pressure bar protrudes downward from the bottom wall of the pressure plate is less than the distance by which the elastic pressure bar protrudes downward from the bottom wall of the pressure plate.

4. The automatic PCBA testing equipment according to claim 1, characterized in that: The distance by which the lower positioning post protrudes upward from the top wall of the lower needle plate is greater than the distance by which the probe protrudes upward from the top wall of the lower needle plate.

5. The automatic PCBA testing equipment according to claim 1, characterized in that: The carrier plate is also provided with product positioning posts, multiple limiting posts and multiple supporting posts. The product positioning posts are located in the product placement position, the multiple limiting posts are respectively located around the product placement position, and the multiple supporting posts are all located in the product placement position.

6. The automatic PCBA testing equipment according to claim 1, characterized in that: The entry / exit assembly also includes a translation drive device, a movable frame, multiple elastic elements and multiple floating elements. The carrier plate is movably connected to the movable frame through the multiple floating elements. The elastic elements elastically abut against the carrier plate and the movable frame. The translation drive device drives the movable frame and the carrier plate to move horizontally together.

7. The automatic PCBA testing equipment according to claim 6, characterized in that: The floating component includes a connecting column and a sliding sleeve. The sliding sleeve is fitted on the outside of the connecting column. The lower part of the connecting column is connected to the movable frame. The upper part of the connecting column passes through the carrier plate. The sliding sleeve is connected to the carrier plate, so that both the carrier plate and the sliding sleeve can move up and down along the connecting column.

8. The automatic PCBA testing equipment according to claim 7, characterized in that: The carrier plate is also provided with a sliding buckle, and the carrier plate is fixedly connected to the sliding sleeve through the sliding buckle.

9. The automatic PCBA testing equipment according to claim 1, characterized in that: The testing mechanism also includes a base box assembly and a panel, the panel being disposed on the base box assembly, and the lower needle plate, the inlet / outlet assembly, and the pressing assembly all being disposed on the panel; The pressing assembly also includes a fixed frame and a lifting frame. The lifting frame is movably connected to the fixed frame. The pressure plate is disposed on the lifting frame. The pressing drive device is disposed inside the base box assembly. The drive axis of the pressing drive device passes upward through the panel and is connected to the lifting frame.

10. The automatic PCBA testing equipment according to claim 9, characterized in that: The pressure plate is detachably connected to the lifting frame.

Images