CN219496464U - Circuit board tester - Google Patents

Abstract

The utility model discloses a circuit board testing machine, wherein the circuit board testing machine comprises: the device comprises a test rack, a lower bedplate, an upper test assembly and a lower test assembly; the lower bedplate is arranged on the test rack, an installation cavity is arranged in the test rack, and a through hole communicated with the installation cavity is formed in the lower bedplate; the upper test assembly comprises an upper test jig, an upper clamping box and a first driving mechanism, wherein the upper test jig is arranged on the upper clamping box, the upper clamping box is rotatably arranged in the mounting cavity, and the first driving mechanism is in driving connection with the upper clamping box so as to control and drive the upper clamping box to turn over; the lower test assembly comprises a lower test jig and a second driving mechanism, the second driving mechanism is arranged on the test rack, the lower test jig is used for placing a circuit board, the second driving mechanism is in driving connection with the lower test jig, and the upper test jig and the lower test jig are tightly pressed to detect the circuit board. The technical scheme of the utility model improves the convenience of replacing the test jig.

Description

Circuit board tester

Technical Field

The utility model relates to the technical field of electronic test equipment, in particular to a circuit board tester.

Background

Electronic equipment is more and more various, and the production demand to various circuit boards is also increased along with this, generally puts the circuit board into circuit board test machine in the electronic and electric trade and detects the performance, is equipped with test jig and lower test jig on the circuit board test machine, makes test probe of test jig and lower test jig prick the test point on the circuit board, again by the switch card control test in the board. However, according to the different circuit boards, the upper and lower test jigs with different structures are required to be designed, and the convenience of replacing the upper test jig is poor due to the space and structure limitation of the machine.

Disclosure of Invention

The utility model mainly aims to provide a circuit board testing machine which aims at improving the convenience of replacing a testing jig.

In order to achieve the above object, the present utility model provides a circuit board testing machine, comprising:

the test device comprises a test rack and a lower bedplate, wherein the lower bedplate is arranged on the test rack, an installation cavity is arranged in the test rack, the installation cavity is positioned above the lower bedplate, and a through hole communicated with the installation cavity is formed in the lower bedplate;

the upper test assembly comprises an upper test jig, an upper card box and a first driving mechanism, wherein the upper test jig is arranged at the bottom of the upper card box, the upper card box is rotatably arranged in the mounting cavity, the first driving mechanism is arranged on the test rack, and the first driving mechanism is in driving connection with the upper card box so as to control and drive the upper card box to turn over; and

the lower test assembly comprises a lower test jig and a second driving mechanism, wherein the second driving mechanism is arranged on the test rack and is used for placing a circuit board, the second driving mechanism is connected with the lower test jig in a driving mode, the second driving mechanism is used for driving the lower test jig to penetrate through the through hole and move to the lower part of the upper test jig, and the upper test jig and the lower test jig are tightly pressed to detect the circuit board.

Optionally, the first actuating mechanism includes first cylinder, the flexible end of first cylinder with go up the card case rotatable coupling, first cylinder rotatable mounting is in the test frame, first cylinder is used for the drive go up the card case upset.

Optionally, the opposite both sides wall of going up the cassette all is protruding to be equipped with the connecting axle, the quantity of first cylinder is two, first actuating mechanism includes two fish-eye joints, one the rotatable cover of one end of fish-eye joint is located one the connecting axle, the other end with one the flexible end of first cylinder is connected, two the first cylinder divides to locate go up the both sides of cassette.

Optionally, the first actuating mechanism includes two first pivots, two opposite side walls of going up the cassette connect respectively two first pivots, two first pivots are all rotationally pegged graft in the both sides of test frame.

Optionally, the upper test assembly further comprises two tapered roller bearings, a fixed ring is arranged on the inner side of the test rack, a rotating hole is formed in the fixed ring, the first rotating shaft penetrates through the rotating hole, the tapered roller bearings are sleeved on the first rotating shaft, and the outer peripheral surfaces of the tapered roller bearings are abutted to the inner peripheral wall of the rotating hole.

Optionally, the upper test assembly further comprises two bearing pressing plates, the bearing pressing plates are installed at one end, far away from the upper clamping box, of the first rotating shaft, and the side faces of the tapered roller bearings are abutted to the bearing pressing plates.

Optionally, the circuit board testing machine includes the second pivot, the both ends of second pivot respectively with the opposite both sides of test frame are connected, go up the test module and include the rotation sleeve, rotate the sleeve install in go up the draw-in box, just rotate the sleeve rotationally the cover is located the second pivot.

Optionally, the upper test assembly further comprises a pushing cylinder, the pushing cylinder is mounted on the upper clamping box, the movable end of the pushing cylinder is connected with the upper test jig, the upper test jig is movably connected with the upper clamping box, and the pushing cylinder is used for controlling the upper test jig to lift.

Optionally, the lower test assembly further includes a plurality of positioning pins spaced apart from each other, the plurality of positioning pins are all disposed through the lower test fixture, and a portion of the positioning pins passes through the circuit board to jack up and position the circuit board.

Optionally, the second actuating mechanism includes driving motor, two lift lead screws, two lift nuts and mounting panel, driving motor install in the test frame, two the lift lead screws divide to locate lower test fixture's relative both sides, and two the lift lead screw with driving motor drive is connected, the lift nut drive connect in the lift lead screw, two the lift nut all install in the mounting panel, the mounting panel with lower test fixture is connected.

According to the technical scheme, the first driving structure is connected to the upper clamping box, and the upper clamping box can rotate to a certain degree in the mounting cavity by driving of the first driving structure so as to lift the upper testing jig to a good angle for exposure. Like this set up, when needs change the test fixture, the user of being convenient for stretches into the installation cavity and gets into and change, compare in the embodiment of changing the test fixture again after dismantling whole last test assembly, promoted the convenience of changing the test fixture like this, reduce operating procedure, save the time of changing to promote the efficiency of changing the test fixture.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a circuit board tester according to an embodiment of the utility model;

FIG. 2 is a schematic diagram of the upper test assembly of FIG. 1;

FIG. 3 is a schematic view of the upper test assembly of FIG. 1 at another angle;

FIG. 4 is a schematic layout view of a circuit board feeder, a circuit board tester, and a circuit board receiver according to the present utility model;

FIG. 5 is a schematic diagram of the circuit board feeder of FIG. 4;

FIG. 6 is a schematic view of the structure of the feeder frame, jacking assembly and positioning assembly of FIG. 5;

FIG. 7 is a schematic view of the jacking assembly and the feeding assembly of FIG. 5;

FIG. 8 is a schematic diagram of the circuit board receiving machine in FIG. 4;

fig. 9 is a schematic structural diagram of the receiving driving mechanism, the receiving arm and the third receiving lifting module in fig. 8;

FIG. 10 is a schematic diagram of the qualified receiving assembly of FIG. 8;

fig. 11 is a schematic structural view of the reject receiving assembly of fig. 8.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a circuit board testing machine.

In one embodiment of the present utility model, as shown in fig. 1 to 4, the circuit board tester 20 includes: a test rack 21, a lower platen 22, an upper test assembly 24, and a lower test assembly 25; the lower platen 22 is mounted on the test stand 21, a mounting cavity 211 is arranged in the test stand 21, the mounting cavity 211 is positioned above the lower platen 22, and the lower platen 22 is provided with a through hole communicated with the mounting cavity 211; the upper test assembly 24 comprises an upper test jig 241, an upper card box 242 and a first driving mechanism, wherein the upper test jig 241 is arranged at the bottom of the upper card box 242, the upper card box 242 is rotatably arranged in the mounting cavity 211, the first driving mechanism is arranged on the test rack 21, and the first driving mechanism is in driving connection with the upper card box 242 so as to control and drive the upper card box 242 to turn over; the lower test assembly 25 includes a lower test fixture 251 and a second driving mechanism, the second driving mechanism is mounted on the test rack 21, the lower test fixture 251 is used for placing a circuit board, the second driving mechanism is connected to the lower test fixture 251 in a driving manner, the second driving mechanism is used for driving the lower test fixture 251 to move to the lower part of the upper test fixture 241 through the through hole, and the upper test fixture 241 and the lower test fixture 251 are tightly pressed to detect the circuit board.

Wherein, the upper card box 242 is provided with a detecting computer and a plurality of switch cards, the switch cards are used for being electrically connected with the circuit board, and the detecting computer is used for detecting whether the circuit board is qualified or not.

According to the technical scheme, the first driving structure is connected to the upper card box 242, and the upper card box 242 can rotate in the mounting cavity 211 to a certain degree by driving of the first driving structure, so that the upper test jig 241 is lifted to a good angle to be exposed. Like this set up, when needs change and go up test fixture 241, the user of being convenient for stretches into the installation cavity 211 and goes to change, compares in the technical scheme that changes to last test fixture 241 again after dismantling whole last test assembly 24, has promoted the convenience degree of changing and going up test fixture 241 like this, reduces operating procedure, saves the time of changing to promote the efficiency of changing and going up test fixture 241.

In an embodiment, the first driving mechanism includes a first cylinder 243, a telescopic end of the first cylinder 243 is rotatably connected to the upper card box 242, the first cylinder 243 is rotatably mounted on the test rack 21, and the first cylinder 243 is used for driving the upper card box 242 to turn over.

Specifically, a first rotary cylinder 243 is mounted on the test rack 21, and the first cylinder 243 is rotatably connected to the upper cassette 242, so that the upper cassette 242 is pulled or pushed by the first cylinder 243 to control the rotation of the upper cassette 242. So configured, the cylinder is employed for driving, facilitating the installation and maintenance of the first cylinder 243 by a user. In other embodiments, the first drive mechanism includes a first electric cylinder.

In an embodiment, the two opposite side walls of the upper clamping box 242 are provided with two connecting shafts 2421 in a protruding manner, the number of the first cylinders 243 is two, the first driving mechanism includes two fisheye joints 244, one end of one fisheye joint 244 is rotatably sleeved on one connecting shaft 2421, the other end is connected with the telescopic end of one first cylinder 243, and the two first cylinders 243 are respectively arranged on two sides of the upper clamping box 242.

Specifically, the fisheye connector 244 is sleeved at one end of the connecting shaft 2421 and is provided with a bearing, the other end of the fisheye connector 244 is provided with a connecting groove, the telescopic end of the first air cylinder 243 is inserted in the connecting groove, when the first air cylinder 243 is contracted, the whole upper clamping box 242 can be pulled to move upwards, when the first air cylinder 243 extends out, the whole upper clamping box 242 can be pushed to move downwards, and in this way, when the first air cylinder 243 is driven, the fisheye connector 244 can convert the movement of the upper clamping box 242 into rotation, so that the upper clamping box 242 can turn over a certain angle, and compared with the embodiment of driving the upper clamping box 242 to move upwards, the space of the mounting cavity 211 is not required to be increased for the movement of the upper clamping box 242, so that the whole volume of the circuit board testing machine 20 can be reduced. In other embodiments, the first cylinder 243 is mounted on the top of the test rack 21, and the telescopic end of the first cylinder 243 is connected to the top of the upper card box 242, so that the first cylinder 243 stretches to drive the upper card box 242 to move up and down.

In an embodiment, the first driving mechanism includes two first shafts 245, two opposite side walls of the upper card box 242 are respectively connected to the two first shafts 245, and the two first shafts 245 are rotatably inserted into two sides of the test rack 21.

Specifically, the upper cassette 242 is rotatably connected to the test rack 21 through first rotation shafts 245 on both sides, and the first cylinder 243 pulls the upper cassette 242, and the upper cassette 242 rotates with reference to the center line of the first rotation shafts 245. This arrangement facilitates rotation of the upper card housing 242.

In another embodiment, the circuit board testing machine 20 includes a second rotating shaft, two ends of the second rotating shaft are respectively connected with two opposite sides of the testing frame 21, the upper testing assembly 24 includes a rotating sleeve, the rotating sleeve is mounted on the upper clamping box 242, and the rotating sleeve is rotatably sleeved on the second rotating shaft.

Specifically, a rotating sleeve is arranged at the rear side of the upper clamping box 242, and the rotating sleeve is sleeved on the second rotating shaft, so that the upper clamping box 242 is convenient to mount and dismount.

In an embodiment, the upper test assembly 24 further includes two tapered roller bearings 246, the inner side of the test frame 21 is provided with a fixing ring 23, the fixing ring 23 is provided with a rotation hole, the first rotation shaft 245 is disposed through the rotation hole, the tapered roller bearings 246 are sleeved on the first rotation shaft 245, and the outer peripheral surfaces of the tapered roller bearings 246 are abutted against the inner peripheral wall of the rotation hole.

Specifically, the tapered roller bearing 246 can bear radial and axial compound loads, under the premise of the same load capacity, the size of the tapered roller bearing 246 is smaller than that of the ball bearing and the cylindrical roller bearing, noise in the rotation process is smaller, the inner ring and the outer ring of the tapered roller bearing 246 are separable, assembly is convenient, and the smooth rotation degree of the upper clamping box 242 can be improved through the arrangement, and the bearing capacity of the first rotating shaft 245 can be improved.

In one embodiment, the upper test assembly 24 further includes two bearing pressing plates 247, the bearing pressing plates 247 are mounted on one end of the first rotating shaft 245 away from the upper clamping box 242, and the side surfaces of the tapered roller bearings 246 are abutted against the bearing pressing plates 247.

Specifically, a bearing pressing plate 247 is attached to an end of the tapered roller bearing 246, and the bearing pressing plate 247 is detachably connected to the first rotating shaft 245 so that a side surface of the tapered roller bearing 246 abuts against the bearing pressing plate 247 to press the tapered roller bearing 246 to fix the bearing. This arrangement prevents the tapered roller bearing 246 from being offset to affect the rotation of the first shaft 245. In other embodiments, the end of the first shaft 245 is provided with a blocking plate, which extends radially towards the first shaft 245 and abuts against the side of the tapered roller bearing 246.

In one embodiment, the upper test assembly 24 further includes a pushing cylinder 248, the pushing cylinder 248 is mounted on the upper card box 242, and a movable end of the pushing cylinder 248 is connected to the upper test fixture 241, the upper test fixture 241 is movably connected to the upper card box 242, and the pushing cylinder 248 is used for controlling the upper test fixture 241 to lift.

Specifically, the number of the pushing cylinders 248 is four, the four pushing cylinders 248 are distributed on four sides of the upper card box 242, the upper test fixture 241 is connected with the four pushing cylinders 248, and the upper test fixture 241 is movably connected to the upper card box 242, and the distance between the upper test fixture 241 and the lower platen 22 is adjusted by adjusting the extending distance of the pushing cylinders 248 so as to adapt to the circuit boards with different thicknesses for detection. In other embodiments, an adjusting cushion block is disposed at the connection between the upper test fixture 241 and the upper card box 242, and the position of the upper test fixture 241 is controlled by increasing the number of adjusting cushion blocks.

Further, four locking cylinders are further arranged, the locking cylinders are mounted on the upper clamping box 242, and four corners of the upper testing jig 241 are locked through the locking cylinders after the upper testing jig 241 is mounted on the upper clamping box 242.

In an embodiment, the lower test assembly 25 further includes a plurality of positioning pins spaced apart from each other, each of the plurality of positioning pins penetrating through the lower test fixture 251, and a portion of the positioning pins penetrating through the circuit board to jack up and position the circuit board.

Specifically, four positioning ejector pins are arranged in the embodiment and are respectively arranged at four corners of the lower test jig 251, positioning holes are formed in the corners of the circuit board and are arranged at intervals with the contacts of the circuit board, the end parts of the ejector pins are conical, the diameter of each positioning hole is smaller than the diameter of the bottom surface of the cone, and the circuit board is placed on the four positioning ejector pins, so that the circuit board can be positioned by the arrangement, and subsequent detection is facilitated. In other embodiments, the lower test assembly 25 further includes a plurality of limiting push blocks detachably connected to the lower test fixture 251, four limiting push blocks are distributed on four sides of the circuit board, and a side wall of the circuit board abuts against the limiting push blocks.

In an embodiment, the second driving mechanism includes a driving motor 252, two lifting screws 253, two lifting nuts 255 and a mounting plate 254, the driving motor 252 is mounted on the test rack 21, the two lifting screws 253 are separately disposed on two opposite sides of the lower test fixture 251, the two lifting screws 253 are in driving connection with the driving motor 252, the lifting nuts 255 are in driving connection with the lifting screws 253, the two lifting nuts 255 are mounted on the mounting plate 254, and the mounting plate 254 is connected with the lower test fixture 251.

Specifically, the lower test jig 251 is driven to lift by the two lifting nuts 255, so that the stability of the lower test jig 251 during lifting can be increased, and a larger force can be provided to press the circuit on the upper test jig 241, so that the circuit board is tightly attached to the upper test jig 241 and the lower test jig 251, the gap is reduced, and the contact stability is improved.

In one embodiment, as shown in fig. 4 to 7, the circuit board feeder 10 includes: a feeding frame 11, a jacking component 12, a feeding component 13, a positioning component 14 and a feeding component; a feeding cavity 111 is arranged in the feeding frame 11; the jacking assembly 12 comprises a jacking plate 121 and a first moving module 122, the first moving module 122 is installed on the feeding frame 11 and is in driving connection with the jacking plate 121, the first moving module 122 is used for controlling the jacking plate 121 to move up and down, a plurality of first partition plates 121a are arranged on the jacking plate 121 in a protruding mode, and the plurality of first partition plates 121a are used for bearing a circuit board; the feeding assembly 13 comprises a feeding plate 131 and a second moving module, the second moving module is arranged on the feeding frame 11 and is in driving connection with the feeding plate 131, the second moving module is used for controlling the feeding plate 131 to enter and exit the feeding cavity 111, a plurality of second partition plates 131a are convexly arranged on the feeding plate 131, the plurality of second partition plates 131a are used for bearing a circuit board, the distribution direction of the plurality of second partition plates 131a is parallel to the distribution direction of the plurality of first partition plates 121a, and the plurality of first partition plates 121a are distributed in a staggered manner with the plurality of second partition plates 131 a; when the second partition plates 131a carry the circuit board, a first partition plate 121a can be inserted into the space between two adjacent second partition plates 131a correspondingly below the circuit board, so that when the lifting plate 121 is lifted, the circuit board can be driven to move upwards by the plurality of first partition plates 121 a; the positioning component 14 is mounted on the feeding frame 11, and the positioning component 14 is used for positioning the circuit board on the lifting plate 121; the feeding assembly serves to convey the circuit board located on the lift plate 121 to the outside.

In the prior art, the lifting plate needs to be firstly lowered to the bottommost part on the feeder, then the circuit boards to be detected are sequentially stacked and placed on the lifting plate through the robot, then the lifting plate is lifted to the linear module, the circuit boards are sequentially moved to the circuit board tester through the sucker assembly, positioning processing is not performed when the robot stacks the circuit boards, the placement position of the circuit boards needs to be adjusted by controlling the movement of the sucker assembly, the time for conveying the circuit boards to the circuit board tester by the feeder is long, and the efficiency is low.

In the technical scheme of the utility model, the lifting plate 121 can move between the feeding cavity 111 and the feeding assembly, the empty lifting plate 121 can acquire the circuit board on the feeding plate 131 in the feeding cavity 111, and the lifting plate 121 carrying the circuit board moves towards the feeding assembly, so that the feeding assembly can acquire the circuit board on the lifting plate 121 to convey the circuit board to the subsequent process. After the feeding assembly takes the material, the empty lifting plate 121 will descend toward the bottom of the feeding chamber 111. During the aforesaid raising and lowering of the lift plate 121, the feed plate 131 can exit the feed chamber 111 and re-enter the feed chamber 111 after a new circuit board is retrieved. Before the feeding plate 131 moves into place in the feeding chamber 111, the empty lifting plate 121 is lowered to a corresponding position, so that a first partition plate 121a is inserted into a space between two adjacent second partition plates 131a correspondingly after the feeding plate 131 arrives, and a circuit board carried on the feeding plate 131 is located on the first partition plate 121 a. Thereafter, the lifting plate 121 is lifted up, and the circuit board may be transferred from the feeding plate 131 to the lifting plate 121, thereby transporting the circuit board to the feeding assembly through the lifting plate 121. The circuit boards in different batches can be continuously conveyed to the feeding component by circulating and reciprocating in this way. The arrangement of the first partition plate 121a and the second partition plate 131a can not interfere, so that the movement of the lifting plate 121 and the movement of the feeding plate 131 can be performed simultaneously, the time for conveying the circuit board by the circuit board feeder 10 can be shortened, the position of the circuit board is well adjusted on the lifting plate 121 through the positioning assembly 14, fine adjustment of the position in the feeding process is not needed, the time required for positioning is reduced, and the efficiency for conveying the circuit board to the circuit board tester 20 is improved.

In one embodiment, the jacking assembly 12 further includes a plurality of pads 123, and at least one pad 123 is mounted on a first partition 121a, and the pads 123 are used for supporting the circuit board.

Specifically, two spacer blocks 123 are respectively disposed on two first partition plates 121a, the two spacer blocks 123 are distributed at intervals along the length direction of the first partition plates 121a, only one spacer block 123 is disposed on the other first partition plates 121a, and the circuit board is disposed above the spacer blocks 123. By the arrangement, the circuit board can be prevented from being in rigid contact with the first partition plates 121a directly, the circuit board is prevented from being damaged, and the cushion blocks 123 are additionally arranged on the two first partition plates 121a, so that the contact area between the first partition plates 121a and the circuit board can be increased, and the circuit board can be placed more stably. In other embodiments, two pads 123 are mounted on each first spacer 121 a.

In one embodiment, the jacking assembly 12 further includes a plurality of reinforcing plates 124, one end of one reinforcing plate 124 is mounted on the jacking plate 121, the other end is connected to a first partition 121a, and the reinforcing plate 124 is located below the first partition 121 a.

Specifically, the reinforcing plate 124 has a triangular shape, in which one right-angle side abuts against the bottom of the first partition 121a, the other right-angle side abuts against the jacking plate 121, and the reinforcing plate 124 is fixed to the jacking plate 121. This arrangement can increase the support performance of the first spacer 121a, and can increase the mounting stability of the first spacer 121a to the jacking plate 121. In other embodiments, the jacking assembly 12 further includes a plurality of reinforcing ribs, which are abutted to the bottom of the first partition 121a and are mounted on the jacking plate 121, and the reinforcing ribs extend along the left-right direction of the first partition 121 a.

In an embodiment, the first moving module 122 includes a first motor 1221, a jacking screw 1222 and a jacking nut, the first motor 1221 is installed on the feeding frame 11, the first motor 1221 is in driving connection with the jacking screw 1222, the jacking screw 1222 extends along the height direction of the feeding frame 11 and is rotatably installed on the feeding frame 11, the jacking nut is in driving connection with the jacking screw 1222, and the jacking plate 121 is sleeved on the jacking nut.

Specifically, the lifting of the lifting plate 121 is controlled by the cooperation of the lifting screw rod 1222 and the lifting nut, so that the transmission process can be more stable, and the lifting speed of the lifting plate 121 can be increased, thereby improving the efficiency of transporting the circuit board. In other embodiments, the first moving module 122 includes a chain, and the first motor 1221 is drivingly connected to the lifting plate 121 through the chain to drive the lifting plate 121 to lift.

In an embodiment, the first moving module 122 further includes a guide shaft 1223 and a guide shaft 1223 bearing, the guide shaft 1223 is parallel to the jacking screw 1222, the guide shaft 1223 is mounted on the feeding frame 11, the guide shaft 1223 bearing is sleeved on the guide shaft 1223, and the jacking plate 121 bearing is sleeved on the guide shaft 1223.

Specifically, the number of the guide shafts 1223 and the number of the guide shafts 1223 are two, the two guide shafts 1223 are respectively arranged at two sides of the jacking screw 1222, and two ends of the guide shafts 1223 are connected with the feeding frame 11. This arrangement increases the stability of the drive and reduces the friction forces experienced during movement of the jacking nut.

In an embodiment, the positioning assembly 14 includes two positioning arms 141 and a baffle 142, the baffle 142 is installed in the installation cavity, the baffle 142 is disposed opposite to any one of the first partition plates 121a and is located at the left side of the lifting plate 121, one positioning arm 141 is disposed opposite to the baffle 142, the other positioning arm 141 is disposed opposite to the lifting plate 121, and the positioning arm 141 is used for pushing the circuit board to move.

Specifically, the stacked circuit boards are pushed by the positioning arm 141, so that adjacent two sides of each circuit board are respectively abutted against the baffle 142 and the lifting plate 121, and the circuit boards are positioned. The arrangement is that when the sucking disc assembly 16 takes materials, the circuit board can be directly moved to the testing position, namely, the sucking disc assembly 16 only needs to set a fixed stroke, no additional adjustment operation is needed, the time required for feeding is reduced, and the efficiency is improved.

In one embodiment, the positioning arm 141 includes an adjustment plate 1411 and a positioning cylinder 1412, the adjustment plate 1411 being movably mounted to the feeder frame 11, the positioning cylinder 1412 being mounted to the adjustment plate 1411, the movable end of the positioning cylinder 1412 being mounted with a buffer block 1413.

Specifically, the position of the positioning cylinder 1412 is adjusted by the adjusting plate 1411 to adapt to circuit boards with different sizes, and the buffer block 1413 can prevent the movable end of the positioning cylinder 1412 from rigidly colliding with the circuit board when the circuit board is positioned, thereby achieving the purpose of protecting the circuit board.

In an embodiment, the second moving module includes a second motor 132, two synchronous wheels 133, a synchronous belt 134 and a synchronous member 135, the second motor 132 is installed on the feeding frame 11, the synchronous wheel 133 is sleeved on the rotating shaft of the second motor 132, the other synchronous wheel 133 is rotatably installed on the feeding frame 11, the synchronous belt 134 is sleeved on the two synchronous wheels 133, the synchronous member 135 is fixed on the surface of the synchronous belt 134, and the feeding plate is installed on the synchronous member 135.

Specifically, the second motor 132 drives the synchronous member 135 to move through the synchronous belt 134, so that noise in the moving process of the synchronous member 135 can be reduced, and meanwhile, the moving precision of the synchronous member 135 can be improved.

In an embodiment, the second moving module further includes two guide rails and two sliders, the two guide rails and the synchronous belt 134 are arranged in a collinear manner, the two guide rails are mounted on the feeding frame 11, the sliders are slidably mounted on the guide rails, the synchronous member 135 is in a strip shape, and the two sliders are respectively mounted at two ends of the synchronous member 135 in the length direction.

Specifically, the two sliders are mounted at the bottom of the synchronous member 135 and are both in sliding connection with the guide rail, so that friction force applied to the synchronous member 135 during movement can be reduced, and movement of the synchronous member 135 is quickened. In other embodiments, other structures are possible, not limited to the guide rail and the slider, as long as the purpose of reducing friction can be satisfied.

In one embodiment, the feeding assembly includes a linear module 15 and a chuck assembly 16, the linear module 15 is drivingly connected to the chuck assembly 16 for driving the chuck assembly 16 to move, and the chuck assembly 16 is used for sucking the circuit board located above the first partition 121 a.

Specifically, the sucking disc subassembly 16 is used for sucking the circuit board, and the straight line module 15 is used for controlling sucking disc subassembly 16 to remove in the length direction of straight line module 15, and can place the circuit board in the test position of circuit board test machine 20, need not fix a position the circuit board again, sets up like this, and the speed of straight line module 15 is faster, can promote the efficiency of transporting the circuit board.

In one embodiment, as shown in fig. 4 and fig. 8 to 11, the circuit board testing line includes a circuit board feeder 10, a circuit board tester 20 and a circuit board receiver 30 distributed from upstream to downstream, the circuit board feeder 10 is used for conveying the circuit board onto the circuit board tester 20, and the circuit board tester 20 is used for detecting the performance of the circuit board; the circuit board material receiving machine 30 comprises a material receiving rack 31, a qualified material receiving assembly 34, a obsolete material receiving assembly 35, a material receiving arm 33 and a material receiving driving mechanism 32, wherein the material receiving rack 31 is provided with a material receiving channel 311 extending along the left-right direction, the material receiving driving mechanism 32 is arranged on the material receiving channel 311, the material receiving driving mechanism 32 is in driving connection with the material receiving arm 33, the material receiving driving mechanism 32 is used for driving the material receiving arm 33 to reciprocate along the length direction of the material receiving channel 311, and the material receiving arm 33 can extend into the circuit board testing machine 20 to take out a circuit board; the material receiving rack 31 is provided with a qualified material receiving position 312 and two obsolete material receiving positions 313, the qualified material receiving component 34 is installed at the qualified material receiving position 312, the qualified material receiving component 34 is used for placing qualified circuit boards, the obsolete material receiving component 35 is installed at the obsolete material receiving position 313, one obsolete material receiving component 35 is used for placing short circuit boards, and the other obsolete material receiving component 35 is used for placing open circuit boards.

Specifically, three material receiving positions 312 for receiving qualified circuit boards, a material eliminating receiving position 313 for receiving short-circuit boards and a material eliminating receiving position 313 for receiving open-circuit boards are respectively arranged on the material receiving rack 31, when the circuit board testing machine 20 detects the circuit boards, the material receiving arm 33 is driven by the material receiving driving structure to extend into the circuit board testing machine 20 to take out the circuit boards, the circuit boards with different detection results are placed at different material receiving positions according to the detection results, the qualified circuit boards are directly discharged, the unqualified circuit boards are restored after being taken by maintenance personnel, and the detection is continued after the restoration is completed. The arrangement is convenient for maintenance personnel to timely take away the damaged circuit board for maintenance, and the circuit board with the same detection result can be placed to the same receiving position, namely, the circuit boards with different problems are distinguished and placed, the problem classification is carried out on the unqualified circuit boards by the maintenance personnel after the unqualified circuit boards are taken away, so that the overall receiving efficiency is low, the maintained circuit boards can be returned to the circuit board test line for testing as soon as possible, and the working efficiency of the circuit board test line is improved.

In an embodiment, the material receiving driving mechanism 32 includes a material receiving motor 321, a conveyor belt 322 and a bearing block 323, the material receiving motor 321 is used for driving the conveyor belt 322, the conveyor belt 322 is disposed in the material receiving channel 311, the bearing block 323 is mounted on a belt body of the conveyor belt 322, the bearing block 323 is connected to one end of the material receiving arm 33, and the other end of the material receiving arm 33 can enter and exit the circuit board testing machine 20 under the driving of the conveyor belt 322.

Specifically, a carrier block 323 is fixed on the belt body of the conveyor belt 322, the carrier block 323 is connected to the material receiving arm 33, the conveyor belt 322 is driven to rotate by the material receiving motor 321, so as to control the movement of the carrier block 323, thereby controlling the movement of the material receiving arm 33 on the material receiving channel 311, and the material receiving arm 33 can extend into the circuit board tester 20 to take materials. The precision that receive material arm 33 removed can be guaranteed to the setting like this, can accurately get the material to and accurately place in different receipts material levels, and the noise is less in the drive process. In other embodiments, the receiving driving mechanism 32 includes a receiving cylinder, and a telescopic end of the receiving cylinder is connected to the receiving arm 33, so as to control the receiving arm 33 to enter and exit the circuit tester.

In an embodiment, the receiving driving mechanism 32 further includes a receiving guide rail 324 and a receiving slide block 325, the receiving guide rail 324 is parallel to the conveyor belt 322, the receiving guide rail 324 is installed in the receiving channel 311, the receiving slide block 325 is slidably connected with the receiving guide rail 324, and the receiving slide block 325 is installed on the receiving arm 33 and is disposed near the bearing block 323.

Specifically, the receiving guide rail 324 is disposed on the receiving frame 31 and adjacent to the conveyor belt 322, the receiving slide block 325 is slidably engaged with the receiving guide rail 324, and the receiving slide block 325 is mounted below the receiving arm 33. The installation stability of receiving arm 33 can be increased to the setting for it is more stable in the removal in-process, can reduce the frictional force that receives in receiving arm 33 removes simultaneously.

In an embodiment, the material receiving arm 33 includes a movable arm 331, a suction cup frame and a vacuum suction cup 334, one end of the movable arm 331 is connected to the bearing block 323, the material receiving slider 325 is mounted on the movable arm 331, the suction cup frame is mounted on the other end of the movable arm 331, and on a horizontal plane, the suction cup frame and the movable arm 331 are connected in an "L" shape on the horizontal plane, and the vacuum suction cup 334 is mounted below the suction cup frame.

Specifically, the sucker frame is connected with the movable arm 331 in an L-shaped manner, that is, the sucker frame is arranged on the side edge of the movable arm 331, and the sucker frame is located right above the qualified material receiving position 312 and the obsolete material receiving position 313, so that the movable arm 331 can be moved to the position above any material receiving position by directly linearly moving the movable arm 331 after the movable arm 331 stretches into the circuit board tester 20 to take materials, the step of moving the sucker frame is not required to be increased, the material receiving process is simplified, and the efficiency is accelerated. In other embodiments, a suction cup holder is mounted to the end of the movable arm 331 with the center line of the suction cup holder parallel to the center line of the movable arm 331.

Further, a third material receiving lifting module 36 is further disposed on the material receiving rack 31, and is used for controlling the movable arm 331 to lift, the movable arm 331 is lifted by a certain height, and after the movable arm 331 extends into the circuit board testing machine 20, the height of the movable arm 331 is lowered to slowly place the vacuum chuck 334 above the circuit board, and then the circuit board is sucked.

In an embodiment, the suction cup frame includes two connection plates 332 and two magnetic suction plates 333, the two connection plates 332 are arranged in parallel and spaced apart in the length direction of the movable arm 331, two ends of the magnetic suction plates 333 are respectively movably connected to the two connection plates 332, the two magnetic suction plates 333 are collinear, the number of the vacuum suction cups 334 is multiple, the vacuum suction cups 334 are arranged at intervals, and at least two vacuum suction cups 334 are magnetically connected to one magnetic suction plate 333.

Specifically, in this embodiment, the number of the vacuum chucks 334 is four, and two vacuum chucks 334 are distributed at two ends of one magnetic chuck 333, two vacuum chucks 334 are also disposed at two ends of the other magnetic chuck 333, and the vacuum chucks 334 are magnetically connected with the magnetic chuck 333, so that the positions of the vacuum chucks 334 are convenient to adjust, so that the interval between the vacuum chucks 334 and the components on the circuit board is ensured in the sucking process, and the circuit board is not damaged. In other embodiments, vacuum chuck 334 is bonded to connecting plate 332.

In an embodiment, the connecting plate 332 is provided with an adjusting slot 3321, the adjusting slot 3321 extends along the length direction of the connecting plate 332, and two ends of the magnetic plate 333 are provided with through holes for passing through fasteners, so that the magnetic plate 333 can be slidably connected to the adjusting slot 3321 through the fasteners.

Specifically, the fastener is used for fixing the magnetic plate 333 on the connecting plate 332, the magnetic plate 333 can move along the length direction of the adjusting slot 3321, and the position of the magnetic plate 333 is adjusted according to the size of the circuit board, so that the vacuum suction disc 334 on the magnetic plate 333 can be distributed at the edge of the circuit board, and the suction disc frame can suck a plurality of circuit boards with different sizes, thereby increasing universality.

In an embodiment, the qualified receiving assembly 34 includes a first receiving plate 341, a first receiving lifting module 342, a first discharging plate 343, and a first discharging moving module 344, where the first receiving lifting module 342 is installed on the receiving frame 31 and is in driving connection with the first receiving plate 341, the first receiving lifting module 342 is used to control the first receiving plate 341 to lift, a plurality of first spaced-apart struts 3411 are disposed on the first receiving plate 341, the first struts 3411 are used to carry circuit boards, the first discharging moving module 344 is installed on the receiving frame 31 and is in driving connection with the first discharging plate 343, the first discharging moving module 344 is used to control the first discharging plate 343 to enter and exit the qualified receiving position 312, the first discharging plate 343 is convexly provided with a plurality of second struts 3431, and the plurality of second struts 3431 are arranged at intervals, when the first struts 3411 carry the circuit boards, the first receiving plate 341 moves down, so that a first 3411 can descend between the two second struts 3431, and the second struts 3431 can abut against the bottom of the circuit boards 3431 and move the first struts 3431 from the top plate 312.

Specifically, the first stays 3411 are spaced apart along the left-right direction of the first discharging plate 343, the second stays 3431 are spaced apart along the left-right direction of the first discharging plate 343, the first stays 3411 on the first receiving plate 341 are used for carrying qualified circuit boards, and since the first stays 3411 and the second stays 3431 are spaced apart and staggered, the bottoms of the qualified circuit boards can be abutted to the second stays 3431 when the first receiving plate 341 descends below the first discharging plate 343, and at this time, the first discharging plate 343 can move towards a direction away from the qualified receiving position 312 for discharging. By the arrangement, the first stay 3411 and the second stay 3431 do not interfere, so that the movement of the first receiving plate 341 and the movement of the first discharging plate 343 can be ensured to be performed simultaneously, and the speed of conveying the circuit board by the circuit board receiving machine 30 can be increased.

In an embodiment, the first receiving lifting module 342 includes a first lifting motor 3422, a first receiving screw 3421, a first receiving nut 3423, a guide rod 3424 and a bearing block 3425, the first receiving screw 3421 is rotatably installed on the receiving frame 31 and extends along the height direction of the receiving frame 31, the first lifting motor 3422 is installed on the receiving frame 31 and is in driving connection with the first receiving screw 3421, the first receiving nut 3423 is in driving connection with the first receiving screw 3421, the first receiving plate 341 is installed on the first receiving nut 3423, the guide rod 3424 is parallel to the first receiving screw 3421, the bearing block 3425 is sleeved on the guide rod 3424, and the guide rod 3424 is installed on the first receiving plate 341.

Specifically, the first lifting motor 3422 drives the first receiving screw rod 3421 to rotate, the lifting of the first receiving plate 341 is controlled through the cooperation of the first receiving screw rod 3421 and the first receiving nut 3423, the bearing seat 3425 is arranged on the first receiving plate 341 in a penetrating mode, the guide rod 3424 is inserted into the bearing seat 3425, accordingly friction force received in movement is reduced, lifting stability of the first receiving plate 341 can be improved, the first receiving plate 341 cannot deviate, the transmission process can be more stable due to the arrangement, lifting speed of the first receiving plate 341 can be improved, and accordingly efficiency of transporting the circuit board is improved. In other embodiments, the first receiving and lifting module 342 includes a chain, and the first lifting motor 3422 is connected to the first receiving plate 341 through the chain in a driving manner, so as to drive the first receiving plate 341 to lift.

In an embodiment, the qualified receiving component 34 further includes a discharge guide rail and a discharge slide block, the discharge guide rail is mounted on the receiving rack 31 and extends towards a direction away from the qualified receiving level 312, the discharge slide block is slidably connected to the discharge guide rail, and the first discharge plate 343 is mounted on the discharge slide block.

Specifically speaking, the number of the discharging guide rails and the number of the discharging sliding blocks are two, the discharging guide rails are respectively arranged on two sides of the first discharging plate 343, the discharging sliding blocks are in sliding fit with the discharging guide rails, the two discharging sliding blocks are all arranged at the bottom of the first discharging plate 343, so that the friction force of the first discharging plate 343 in moving can be reduced, and the discharging speed is improved.

In an embodiment, the eliminating and receiving assembly 35 includes a second receiving plate 351, a plurality of receiving cushion blocks 352 and a second receiving lifting module 353, the second receiving lifting module 353 is mounted on the receiving frame 31, the second receiving plate 351 is in driving connection with the second receiving lifting module 353, the plurality of receiving cushion blocks 352 are mounted on the second receiving plate 351, and the plurality of receiving cushion blocks 352 are uniformly distributed at intervals in a direction away from the eliminating and receiving position 313.

Specifically, the material receiving cushion blocks 352 are used for bearing circuit boards, and the material receiving cushion blocks 352 are distributed at intervals to increase the bearing area, so that circuit boards with different sizes can be placed, the circuit boards can be prevented from being directly in rigid contact with the second material receiving plate 351 through the arrangement, and meanwhile, the bearing area of the second material receiving plate 351 can be increased to adapt to circuit boards with different sizes. In other embodiments, the plurality of receiving pads 352 are uniformly spaced apart in the left-right direction of the second receiving plate 351.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A circuit board tester, comprising:

the test device comprises a test rack and a lower bedplate, wherein the lower bedplate is arranged on the test rack, an installation cavity is arranged in the test rack, the installation cavity is positioned above the lower bedplate, and a through hole communicated with the installation cavity is formed in the lower bedplate;

the upper test assembly comprises an upper test jig, an upper card box and a first driving mechanism, wherein the upper test jig is arranged at the bottom of the upper card box, the upper card box is rotatably arranged in the mounting cavity, the first driving mechanism is arranged on the test rack, and the first driving mechanism is in driving connection with the upper card box so as to control and drive the upper card box to turn over; and

the lower test assembly comprises a lower test jig and a second driving mechanism, wherein the second driving mechanism is arranged on the test rack and is used for placing a circuit board, the second driving mechanism is connected with the lower test jig in a driving mode, the second driving mechanism is used for driving the lower test jig to penetrate through the through hole and move to the lower part of the upper test jig, and the upper test jig and the lower test jig are tightly pressed to detect the circuit board.

2. The circuit board testing machine of claim 1, wherein the first driving mechanism comprises a first cylinder, the telescopic end of the first cylinder is rotatably connected with the upper card box, the first cylinder is rotatably mounted on the testing frame, and the first cylinder is used for driving the upper card box to turn over.

3. The circuit board testing machine of claim 2, wherein connecting shafts are convexly arranged on two opposite side walls of the upper clamping box, the number of the first air cylinders is two, the first driving mechanism comprises two fish-eye joints, one end of each fish-eye joint is rotatably sleeved on one connecting shaft, the other end of each fish-eye joint is connected with a telescopic end of one first air cylinder, and the two first air cylinders are respectively arranged on two sides of the upper clamping box.

4. The circuit board testing machine of claim 2, wherein the first driving mechanism comprises two first rotating shafts, two opposite side walls of the upper clamping box are respectively connected with the two first rotating shafts, and the two first rotating shafts are rotatably inserted into two sides of the testing frame.

5. The circuit board testing machine of claim 4, wherein the upper testing assembly further comprises two tapered roller bearings, a fixing ring is arranged on the inner side of the testing machine frame, a rotating hole is formed in the fixing ring, the first rotating shaft penetrates through the rotating hole, the tapered roller bearings are sleeved on the first rotating shaft, and the outer peripheral surfaces of the tapered roller bearings are abutted against the inner peripheral wall of the rotating hole.

6. The circuit board testing machine of claim 5, wherein the upper testing assembly further comprises two bearing pressing plates, wherein the bearing pressing plates are mounted at one end of the first rotating shaft far away from the upper clamping box, and the side surfaces of the tapered roller bearings are abutted against the bearing pressing plates.

7. The circuit board testing machine of claim 2, wherein the circuit board testing machine comprises a second rotating shaft, two ends of the second rotating shaft are respectively connected with two opposite sides of the testing frame, the upper testing assembly comprises a rotating sleeve, the rotating sleeve is mounted on the upper clamping box, and the rotating sleeve is rotatably sleeved on the second rotating shaft.

8. The circuit board testing machine of claim 1, wherein the upper testing assembly further comprises a pushing cylinder, the pushing cylinder is mounted on the upper clamping box, the movable end of the pushing cylinder is connected with the upper testing jig, the upper testing jig is movably connected to the upper clamping box, and the pushing cylinder is used for controlling the upper testing jig to lift.

9. The circuit board testing machine of claim 1, wherein the lower testing assembly further comprises a plurality of positioning pins spaced apart from each other, a plurality of the positioning pins penetrating through the lower testing fixture, and a portion of the positioning pins penetrating through the circuit board to jack up and position the circuit board.

10. The circuit board testing machine of claim 1, wherein the second driving mechanism comprises a driving motor, two lifting screw rods, two lifting nuts and a mounting plate, the driving motor is mounted on the testing frame, the two lifting screw rods are respectively arranged on two opposite sides of the lower testing jig, the two lifting screw rods are in driving connection with the driving motor, the lifting nuts are in driving connection with the lifting screw rods, the two lifting nuts are mounted on the mounting plate, and the mounting plate is connected with the lower testing jig.