A double-station marking and inspection device

Abstract

The present invention provides a dual-station engraving and inspection device, including an input station, an engraving station and an inspection station, wherein the input station includes a feed channel for inputting a circuit board and a hole array reader arranged above the feed channel, the engraving station and the inspection station are arranged separately, the engraving station includes an engraving platform connected to a displacement mechanism and an engraving machine located above the engraving platform, the inspection station includes a material inspection channel for placing the circuit board and a code reading device arranged above the material inspection channel, the engraving platform can be connected with the feed channel or the material inspection channel under the drive of the displacement mechanism, and the feed channel, the engraving platform and the material inspection channel are provided with a conveying device for receiving or outputting the circuit board. The present invention can make the engraving process and the inspection process of the two-dimensional code be carried out simultaneously, thereby improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of semiconductor manufacturing equipment, and in particular to a double-station imprinting and inspection device. Background Art

[0002] In the semiconductor packaging process, it is necessary to accurately engrave a QR code on each unit on a large substrate. The engraved QR code has strict position accuracy (plus or minus 150 microns) and grade requirements (all grade A). The existing QR code engraving equipment mainly includes the following stations: input station, used to input products; engraving and inspection station, used to engrave QR codes and check the engraving of QR codes. This equipment has two main defects: the engraving and inspection functions of the product are in the same station, which is inefficient; the transfer of products between stations is achieved by a suction nozzle, which is unstable in sucking products. When the product itself is warped or too heavy, the product suction will often fail. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a new type of dual-station marking and inspection device, which separates the marking station and the inspection station. The marked product flows into the inspection station for inspection, while the next product can enter the marking station for marking, thereby improving production efficiency.

[0004] The present invention solves the technical problem in the following ways:

[0005] A dual-station marking and inspection device comprises an input station, a marking station and an inspection station, wherein the input station comprises a feed channel for inputting a circuit board and a hole array reader arranged above the feed channel, and is characterized in that: the marking station and the inspection station are arranged separately, the marking station comprises an marking platform connected to a displacement mechanism and an imprinter located above the marking platform, the inspection station comprises a material inspection channel for placing the circuit board and a code reading device arranged above the material inspection channel, the marking platform can be connected with the feed channel or the material inspection channel under the drive of the displacement mechanism, and the feed channel, the marking platform and the material inspection channel are provided with a conveying device for receiving or outputting the circuit board.

[0006] When in use, the displacement mechanism drives the imprinting platform to connect with the feeding channel, and the circuit board is fed into the imprinting platform. The imprinting machine located above the imprinting platform imprints the QR code on the circuit board. After the imprinting is completed, the displacement mechanism drives the imprinting platform to connect with the material inspection channel, and the circuit board is fed into the material inspection channel through the conveying device. The inspection mechanism located above the material inspection channel inspects the QR code, and then the material inspection channel sends the circuit board with the QR code inspected to the subsequent process.

[0007] After the upper circuit board on the engraving platform is fed into the material inspection channel, the displacement device drives the engraving platform to connect with the feeding channel again, and performs the QR code engraving operation on the lower circuit board, so that the QR code engraving process and the inspection process can be carried out simultaneously, thereby improving production efficiency.

[0008] As a preferred embodiment of the present invention, the conveying device includes a first belt conveyor wheel set arranged on the feeding channel, a second belt conveyor wheel set arranged on the imprinting platform and capable of connecting with the first belt conveyor wheel set, and a third belt conveyor wheel set arranged on the material inspection channel and capable of connecting with the second belt conveyor wheel set. The belt transmission method is not likely to cause the circuit board to fail to transfer due to excessive weight of the circuit board or the feet tilting, and the reliability of use is higher and the failure rate is lower.

[0009] As a preferred embodiment of the present invention, it also includes an output station connected to the inspection station, for receiving and outputting the circuit board that has completed the marking and inspection process.

[0010] As a preferred embodiment of the present invention, the output station includes a turning frame and a turning platform placed on the turning frame, and the turning platform is provided with a fourth belt conveyor wheel group that can be connected with the third belt conveyor wheel group on the inspection station. The circuit board is transferred to the output station through the synergistic effect of the third and fourth belt conveyor wheel groups.

[0011] As a preferred embodiment of the present invention, the flip platform includes side support plates located on both sides and support beams spanning the side support plates, and two groups of fourth belt conveyor wheel groups arranged in an upper and lower interval are provided on the inner surface of the side support plates.

[0012] In addition, a blocking mechanism is also included on one side of the fourth belt conveyor wheel set, the blocking mechanism includes a blocking cylinder arranged on the support beam and a baffle connected to the piston rod of the blocking cylinder, and the baffle can shield the circuit board placed in the fourth belt conveyor wheel set after being extended, so that the circuit board will not fall off the platform when flipping.

[0013] As a preferred embodiment of the present invention, the displacement mechanism includes a transverse slide and a longitudinal slide arranged on the transverse slide, and the engraving platform is arranged on the longitudinal slide. With such a structure, the engraving platform can move freely on the XY plane.

[0014] As a preferred embodiment of the present invention, the engraving platform includes a base plate connected to the longitudinal slide, a lifting device arranged on the base plate, a vacuum suction plate connected to the lifting device and a flattening device arranged above the vacuum suction plate, and the second belt conveyor wheel group is located on both sides of the vacuum suction plate.

[0015] As a preferred embodiment of the present invention, the lifting device includes a first driving motor disposed on the bottom plate, a driving wheel connected to the first driving motor, driven wheels disposed at the four corners of the bottom plate, a belt wound around the driving wheel and the driven wheel, a screw connected to the driven wheel, a screw nut meshed with the screw, and a connecting block disposed on the screw nut, the top of the connecting block being connected to the engraving platform. The first driving motor drives the screw to rotate, controls the screw nut to rise and fall, and then drives the vacuum suction plate to rise and fall.

[0016] As a preferred embodiment of the present invention, vacuum suction holes are evenly arranged on the vacuum suction plate for adsorbing the circuit board.

[0017] The present invention separates the imprinting station from the inspection station. When the upper circuit board enters the inspection station for inspection, the imprinting station is driven to imprint the lower circuit board, so that the imprinting process and the inspection process can be carried out simultaneously, thereby improving the overall operation efficiency.

[0018] In addition, in the present invention, the transmission of circuit boards between various workstations is completed by a belt conveyor wheel group. Compared with the method of transferring circuit boards by a suction nozzle in the prior art, there is no problem of transfer failure due to excessive weight of the circuit board or tilting of the feet. The reliability of use is higher and the failure rate is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings:

[0020] Figure 1 A three-dimensional view of the present invention;

[0021] Figure 2 A top view of the present invention;

[0022] Figure 3 A three-dimensional view of the input station;

[0023] Figure 4 It is a three-dimensional view of the displacement mechanism and the imprinting platform;

[0024] Figure 5 It is a three-dimensional view of the displacement mechanism and the imprinting platform;

[0025] Figure 6 A three-dimensional view of the engraving platform;

[0026] Figure 7 A three-dimensional view of the engraving platform;

[0027] Figure 8 A three-dimensional view of the engraving station and the inspection station;

[0028] Among them: 100-base, 200-input station, 210-feeding channel, 220-hole array reader, 222-first belt conveyor wheel group, 223-side plate, 224-support plate, 225-pulley, 300-imprinting station, 310-displacement mechanism, 311-transverse slide, 312-longitudinal slide, 313-first table, 314-transverse slide rail, 315-transverse lead screw, 316-first motor, 317-first movable block, 318-second table, 319-first slider, 320-longitudinal slide rail, 321-longitudinal lead screw, 322-second motor, 323-second movable block, 330- Engraving platform, 331-bottom plate, 332-lifting device, 333-vacuum suction plate, 334-flattening device, 335-second belt conveyor wheel group, 336-second slider, 337-bracket, 338-first drive motor, 339-driving wheel, 340-driven wheel, 341-belt, 342-screw, 343-screw nut, 344-connecting block, 345- Stop block, 346-guide rail, 347-support frame, 348-slide cylinder, 349-pressing frame, 350-first pulley, 351-second pulley, 352-third pulley, 353-conveyor belt, 354-third drive motor, 355-drive shaft, 356-drive wheel, 357-vacuum suction hole, 358-pulley frame, 359-column, 370-engraving machine, 371-engraving head, 372-dust removal device, 373-laser controller, 400-inspection station, 410-material inspection channel, 420-code reading device, 421-longitudinal guide rail, 422-beam, 423-transverse guide rail, 424- Reading dock, 430-third belt conveyor wheel group, 500-output station, 510-turning frame, 511-turning motor, 512-roller frame, 520-turning platform, 530-side support plate, 540-support beam, 550-fourth belt conveyor wheel group, 560-blocking mechanism, 561-blocking cylinder, 562-baffle, 600-circuit board. DETAILED DESCRIPTION

[0029] The present invention is further described below by means of specific embodiments:

[0030] like Figure 1 and Figure 2 As shown, a dual-station marking and inspection device includes a base 100 , an input station 200 , a marking station 300 , an inspection station 400 and an output station 500 arranged on the base 100 .

[0031] like Figure 3As shown, the input station 200 includes a feed channel 210 for inputting a circuit board 600 and a hole array reader 220 located above the feed channel 210. The feed channel 210 includes side panels 223 located on both sides, and the inner sides of the side panels 223 on both sides are provided with a first belt conveyor wheel group 222, and also includes a plurality of support plates 224 arranged at intervals between the two side panels 223, and a pulley 225 is installed on the side wall of the support plate 224, and the top of the pulley 225 protrudes from the support plate 224 and is flush with the belt of the first belt conveyor wheel group 222. This can play the effect of supporting the circuit board 600 and prevent the circuit board 600 from bending under the action of self-gravity. In addition, it is preferred to add a group of belt conveyor wheel groups on the side wall of the support plate 224 located in the middle to improve the efficiency of circuit board transportation.

[0032] The hole array reader 220 is located above the feeding channel and is connected to a bracket spanning above the feeding channel 210. The hole array information of the circuit board 600 passing through the feeding channel 210 is read.

[0033] like Figure 4 As shown, the imprinting station 300 includes a displacement mechanism 310, an imprinting platform 330 placed on the displacement mechanism 310, and an imprinting machine 370 placed next to the displacement mechanism 310. The displacement mechanism 310 includes a transverse slide 311 and a longitudinal slide 312. The transverse slide 312 includes a first platen 313, transverse slide rails 314 located on both sides of the top surface of the first platen 313, a transverse lead screw 315 located in the middle of the top surface of the first platen 313, a first motor 316 connected to the transverse lead screw 315, and a first movable block 317 inserted in the transverse lead screw 315 and meshed with the transverse lead screw 315. The longitudinal slide 312 includes a second platform 318 fixed to a first movable block 317, a first slider 319 provided on both sides of the bottom surface of the second platform 318 and cooperating with the transverse slide rail 314, longitudinal slide rails 320 provided on both sides of the top surface of the second platform 318, a longitudinal lead screw 321 provided in the middle of the longitudinal slide rails 320 on both sides, a second motor 322 connected to the longitudinal lead screw 321, and a second movable block 323 passing through the longitudinal lead screw 321 and meshing with the longitudinal lead screw 321.

[0034] like Figure 4 As shown, the engraving platform 330 includes a base plate 331, a lifting device 332 arranged on the base plate 331, a vacuum suction plate 333 connected to the lifting device 332, a flattening device 334 arranged above the vacuum suction plate 333, and a second belt conveyor wheel set 335 arranged on both sides of the vacuum suction plate 333.

[0035] The bottom plate 331 is connected to the second movable block 323 . Second sliders 336 cooperating with the longitudinal slide rails 320 are provided on both sides of the bottom plate 331 , so that the bottom plate 331 can translate on the XY plane under the drive of the transverse slide 311 and the longitudinal slide 312 .

[0036] like Figure 4 , Figure 5 and Figure 6 As shown, the lifting device 332 includes a first driving motor 338 connected to the base plate 331 through a bracket 337, a driving wheel 339 connected to the first driving motor 338, a driven wheel 340 arranged at the four corners of the base plate 331, a belt 341 wound around the driving wheel 339 and the driven wheel 340, a screw rod 342 connected to the driven wheel 340, a screw rod nut 343 passed through the screw rod 342 and meshed with the screw rod 342, and a connecting block 344 arranged on the screw rod nut 343, the top end of the connecting block 344 is connected to the engraving platform 330, and also includes a stop block 345 connected to the connecting block 344, the stop block 345 cooperates with a guide rail 346 arranged next to the screw rod 342, and can slide along the guide rail 346. When in use, the first driving motor 338 drives the driving wheel 339 to rotate, and drives the driven wheels 340 at the four corners of the bottom plate 331 to rotate synchronously through the belt 341, and the screw rod 342 connected to the driven wheel 340 also rotates accordingly, driving the screw rod nut 343 to rise and fall, and then driving the engraving platform 330 connected to the screw rod nut 343 through the connecting block 344 to rise and fall.

[0037] The flattening device 334 includes support frames 347 located on both sides of the bottom plate 331 , a slide cylinder 348 provided on the outer surface of the support frame 347 , and a Japanese-shaped pressing frame 349 located above the vacuum suction plate 333 . The slide of the slide cylinder 348 is connected to the pressing frame 349 .

[0038] The second belt conveyor wheel group 335 is arranged on the inner surface of the support frame 347 on both sides, including a first belt wheel arranged at the front end of the support frame 347, a second belt wheel 351 arranged at the rear end of the support frame 347 and parallel to the first belt wheel, a third belt wheel 352 arranged on the support frame and located below the second belt wheel 351, and a conveyor belt 353 wound around the first belt wheel 350, the second belt wheel 351 and the third belt wheel 352, and also includes a third driving motor 354 arranged on the bottom plate 331, and a driving shaft 355 connected to the third driving motor 354 through a belt transmission, and driving wheels 356 for driving the conveyor belt 353 are installed at both ends of the driving shaft 355. When in use, the driving shaft 355 is driven to rotate by the third driving motor 354, thereby driving the operation of the conveyor belt 353 to convey the circuit board 600 mounted on the conveyor belt 353.

[0039] The vacuum suction plate 333 is evenly provided with a plurality of vacuum suction holes 357 for adsorbing the circuit board 600. In addition, since the area of ​​the circuit board 600 is relatively large, in order to prevent the circuit board 600 from bending under the action of gravity, a row of through holes arranged at intervals is provided in the middle of the vacuum suction plate 333, and a pulley frame 358 is provided at the position corresponding to the through holes on the bottom plate. The pulley frame 358 is provided with a column 359 that can extend from the through hole, and the top of the column 359 has a pulley flush with the conveyor belt 353 to support the circuit board 600 and prevent the circuit board from being deformed.

[0040] Combination Figure 1 and Figure 2 As shown, the marking machine 370 includes an imprinting head 371 connected to the support arm, a dust removal device 372 connected to the imprinting head 371 on one side of the support arm, a laser controller 373 connected to the imprinting head 371 on the other side of the support arm, and the imprinting head 371 is located directly above the imprinting platform 330.

[0041] like Figure 1 and Figure 7 As shown, the inspection station 400 includes a material inspection channel 410 and a code reading device 420 disposed above the material inspection channel 410. A third belt conveyor wheel set 430 is disposed on both sides of the material inspection channel 410. The code reading device 420 includes longitudinal guide rails 421 disposed on both sides of the material inspection channel 410, cross beams 422 mounted on the longitudinal guide rails 421 on both sides, transverse guide rails 423 disposed on the cross beams 422, and a reading terminal 424 disposed on the transverse guide rails 423.

[0042] like Figure 8 As shown, the output station 500 includes a turning frame 510 and a turning platform 520 placed on the turning frame 510, and the turning platform 520 includes side support plates 530 located on both sides, a plurality of support beams 540 erected between the side support plates 530, two groups of fourth belt conveyor wheel groups 550 arranged at intervals up and down on the inner surface of the side support plates 530, and a blocking mechanism 560 disposed at one end of the turning platform 520. The blocking mechanism 560 includes a blocking cylinder 561 placed on the support beam 540 and a baffle 562 connected to the piston rod of the blocking cylinder 561, and the baffle can block the circuit board 600 located between the fourth belt conveyor wheel group 550.

[0043] The flip frame 510 is provided with a flip motor 511 connected to the side support plate 530, and the flip platform 520 is driven to rotate by the flip motor 511. In order to prevent the circuit board 600 from shaking left and right when flipping, it is preferred to set a longitudinal roller frame 512 connected to the support beam 540 on the flip platform 520, and the roller frame 512 is arranged opposite to each other up and down to limit the circuit board 600 placed between the fourth belt conveyor wheel group 550.

[0044] The above is the overall structure of the present invention. At the beginning of operation, the displacement mechanism 310 drives the engraving platform 330 to connect with the feeding channel 210, and the circuit board 600 is sent from the feeding channel 210 to the vacuum suction plate 333 through the coordinated action of the first belt conveyor wheel group 222 and the second belt conveyor wheel group 335. Then the vacuum suction plate 333 rises to a conveying belt 353 higher than the second belt conveyor wheel group 335, so that the bottom surface of the circuit board 600 is in direct contact with the vacuum suction plate 333, and the vacuum suction hole 357 provided on the vacuum suction plate 333 sucks the circuit board 600, and then the pressing frame 349 is pressed down to clamp the circuit board 600 between the pressing frame 349 and the vacuum suction plate 333, so as to limit and fix the circuit board 600.

[0045] Next, the four corners of the circuit board 600 are aligned with the imprinting head 371 in sequence under the drive of the displacement mechanism 310, and the imprinting head 371 prints the two-dimensional code on the four corners of the circuit board 600. After the coding is completed, the pressing frame 349 rises, the vacuum suction hole 357 stops vacuuming, and the vacuum suction plate 333 descends, so that the circuit board 600 with the two-dimensional code printed falls back onto the second belt conveyor wheel set 335.

[0046] Then, the displacement mechanism 310 drives the engraving platform 330 to connect with the material checking channel 410, and the circuit board 600 is sent from the vacuum suction plate 333 to the material checking channel 410 through the coordinated action of the second belt conveyor wheel group 335 and the third belt conveyor wheel group 430. The reading terminal 424 located above the material checking channel 410 is driven by the transverse guide rail 423 and the longitudinal guide rail 421 to align the four corners of the circuit board 600 respectively to detect the QR code.

[0047] While the upper circuit board 600 is being inspected in the material inspection channel 410 , the displacement mechanism 310 drives the imprinting platform 330 to connect with the feeding channel 210 again, and delivers the lower circuit board to the imprinting platform 330 for imprinting operation.

[0048] Finally, the third belt conveyor wheel set 430 and the fourth belt conveyor wheel set 550 cooperate to deliver the circuit board 600 from the material inspection channel 410 to the flip platform 520, and then the fourth belt conveyor wheel set 550 delivers the circuit board 600 to the next process, thus completing the entire marking and inspection process.

[0049] For the circuit board 600 that needs to be printed with a QR code on both sides, after being sent to the flip platform 520, the blocking cylinder 561 drives the baffle 562 to rise to block the circuit board 600. The flip motor 511 drives the flip platform 520 to rotate 180° and then sends the circuit board 600 out. The circuit board 600 is then reflowed into the feed channel for secondary engraving, thereby realizing double-sided engraving and inspection operations.

[0050] The present invention separates the imprinting station 300 and the inspection station 400. When the upper circuit board enters the inspection station 400 for inspection, the imprinting station 300 is driven to imprint the lower circuit board, so that the imprinting process and the inspection process can be carried out simultaneously, thereby improving the overall operation efficiency.

[0051] In addition, in the present invention, the transmission of circuit boards between various workstations is completed by a belt conveyor wheel group. Compared with the method of transferring circuit boards by a suction nozzle in the prior art, there is no problem of transfer failure due to excessive weight of the circuit board or tilting of the feet. The reliability of use is higher and the failure rate is lower.

[0052] However, those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A dual-station marking and inspection device, comprising an input station (200), a marking station (300) and an inspection station (400), wherein the input station (200) comprises a feed channel (210) for inputting a circuit board (600) and a hole array reader (220) disposed above the feed channel (210), characterized in that: The imprinting station (300) and the inspection station (400) are arranged separately. The imprinting station (300) comprises a displacement mechanism (310), an imprinting platform (330) connected to the displacement mechanism (310), and an imprinting machine (370) located above the imprinting platform (330). The inspection station (400) comprises a material checking channel (410) for placing a circuit board (600) and a code reading device (420) arranged above the material checking channel (410). The imprinting platform (330) can be connected with the feeding channel (210) or the material checking channel (410) under the drive of the displacement mechanism (310). The feeding channel (210), the imprinting platform (330) and the material checking channel (410) are provided with a conveying device for receiving or outputting the circuit board (600). The displacement mechanism (310) comprises a transverse slide (311) and a longitudinal slide (312) arranged on the transverse slide (311), and the imprinting platform (330) is arranged on the longitudinal slide (312); The engraving platform (330) comprises a bottom plate (331), a lifting device (332) arranged on the bottom plate (331), a vacuum suction plate (333) connected to the lifting device (332), and a flattening device (334) arranged above the vacuum suction plate (333); a second belt conveyor wheel set (335) is located on both sides of the vacuum suction plate (333).

2. The double-station marking and inspection device according to claim 1, characterized in that: The conveying device comprises a first belt conveying wheel group (222) arranged on the feeding channel (210), a second belt conveying wheel group (335) arranged on the imprinting platform (330) and capable of being connected with the first belt conveying wheel group (222), and a third belt conveying wheel group (430) arranged on the material checking channel (410) and capable of being connected with the second belt conveying wheel group (335).

3. The double-station marking and inspection device according to claim 1, characterized in that: It also includes an output station (500) connected to the inspection station (400).

4. The double-station marking and inspection device according to claim 3, characterized in that: The output station (500) comprises a turning frame (510) and a turning platform (520) placed on the turning frame (510); the turning platform (520) is provided with a fourth belt conveyor wheel group (550) capable of connecting with a third belt conveyor wheel group (430) on the inspection station (400).

5. The double-station marking and inspection device according to claim 4, characterized in that: The turning platform (520) comprises side support plates (530) located on both sides and a support beam (540) straddling the side support plates (530), and two groups of fourth belt conveyor wheel groups (550) arranged in an upper and lower interval are arranged on the inner surface of the side support plates (530).

6. The double-station marking and inspection device according to claim 5, characterized in that: It also includes a blocking mechanism (560) located on one side of the fourth belt conveyor wheel group (550), the blocking mechanism (560) including a blocking cylinder (561) disposed on the support beam (540) and a blocking plate (562) connected to the piston rod of the blocking cylinder (561), and the blocking plate (562) can shield the circuit board (600) placed in the fourth belt conveyor wheel group (550) after being extended.

7. The double-station marking and inspection device according to claim 1, characterized in that: The lifting device (332) comprises a first driving motor (338) arranged on the base plate (331), a driving wheel (339) connected to the first driving motor (338), a driven wheel (340) arranged at four corners of the base plate (331), a belt (341) wound around the driving wheel (339) and the driven wheel (340), a screw rod (342) connected to the driven wheel (340), a screw rod nut (343) meshed with the screw rod (342), and a connecting block (344) arranged on the screw rod nut (343), wherein the top end of the connecting block (344) is connected to the vacuum suction plate (333).

8. The double-station marking and inspection device according to claim 1, characterized in that: The vacuum suction plate (333) is evenly arranged with vacuum suction holes (357).

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