CN110919346A - LCM automatic assembly process - Google Patents
LCM automatic assembly process Download PDFInfo
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- CN110919346A CN110919346A CN201911177562.2A CN201911177562A CN110919346A CN 110919346 A CN110919346 A CN 110919346A CN 201911177562 A CN201911177562 A CN 201911177562A CN 110919346 A CN110919346 A CN 110919346A
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 241000283070 Equus zebra Species 0.000 claims abstract description 106
- 239000000853 adhesive Substances 0.000 claims abstract description 24
- 230000001070 adhesive effect Effects 0.000 claims abstract description 24
- 238000007731 hot pressing Methods 0.000 claims description 121
- 238000004140 cleaning Methods 0.000 claims description 43
- 239000003292 glue Substances 0.000 claims description 16
- 230000000007 visual effect Effects 0.000 claims description 14
- 238000004026 adhesive bonding Methods 0.000 claims description 12
- 230000002950 deficient Effects 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 11
- 239000000741 silica gel Substances 0.000 claims description 10
- 229910002027 silica gel Inorganic materials 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
- B23P21/004—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control the units passing two or more work-stations whilst being composed
- B23P21/006—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control the units passing two or more work-stations whilst being composed the conveying means comprising a rotating table
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application relates to the technical field of electronic element assembly, in particular to an LCM automatic assembly process, which comprises a circuit board and a display screen; feeding zebra paper; detecting power-on; and (6) sticking a back adhesive. According to the LCM automatic assembly process, synchronous compression joint of the zebra paper, the display screen and the circuit board is achieved by utilizing LCM automatic assembly equipment, assembly steps are reduced, and assembly efficiency is higher.
Description
[ technical field ] A method for producing a semiconductor device
The application relates to the technical field of electronic element assembly, in particular to an LCM automatic assembly process.
[ background of the invention ]
In the production of display-type electronic products, LCM assembly is an important part of the display-type electronic products, and mainly involves pressing a display screen and a circuit board together through zebra paper to electrically connect the display screen and the circuit board.
The existing LCM assembly process needs to manually place the display screen, the circuit board and the zebra paper due to the limitation of equipment, one end of the zebra paper is connected with the display screen in a hot-pressing mode and then rotated by 180 degrees during assembly, and the other end of the zebra paper is connected with the circuit board in a hot-pressing mode, so that the operation is complex and the efficiency is low.
[ summary of the invention ]
The application aims to provide an LCM automatic assembly process, which utilizes LCM automatic assembly equipment to realize synchronous compression joint of zebra paper, a display screen and a circuit board, reduces assembly steps and has higher assembly efficiency.
The application is realized by the following technical scheme:
the LCM automatic assembly process applies LCM automatic assembly equipment, the LCM automatic assembly equipment comprises a rotating disc type assembly line with a rotating disc, one or more positioning clamps are arranged on the rotating disc, and the process comprises the following steps:
circuit board and display screen material loading: the front feeding mechanism transfers the circuit board and the display screen to a positioning clamp of the turntable;
feeding zebra paper: the zebra paper feeding mechanism tears off the back adhesive of the zebra paper and then places the torn zebra paper on a positioning clamp, two ends of the zebra paper are respectively lapped on the hot pressing part of the circuit board and the hot pressing part of the display screen, and the hot pressing mechanism simultaneously carries out hot pressing connection on two ends of the zebra paper, so that the circuit board and the display screen are electrically connected through the zebra paper and assembled to form an LCM module;
and (3) electrifying detection: the detection mechanism is used for electrifying the LCM module after hot pressing, detecting the display state of the display screen through the visual recognition device, judging that the display state is abnormal as a defective product, and judging that the display state is normal as a qualified product;
pasting a back adhesive: and the gum pasting mechanism pastes the gum to the back of the zebra paper of the LCM module which shows a qualified state.
According to the LCM automatic assembly process, the following processes are further included between the process of feeding the circuit board and the display screen and the process of feeding the zebra paper: cleaning a hot-pressing part: and cleaning the parts of the circuit board and the display screen which need to be subjected to hot-pressing connection.
The LCM automatic assembly process further includes the following steps after the step of applying the back adhesive: sorting and stacking: and the product sorting mechanism is used for sorting and stacking defective products and qualified products.
According to the LCM automatic assembly process, the zebra paper feeding mechanism comprises a hot pressing part cleaning device, a zebra paper feeding mechanical arm and a back glue tearing device arranged on one side of the zebra paper feeding mechanical arm;
hot pressing portion cleaning device includes clean frame, locates push down drive arrangement in the clean frame, locate push down the washing drive arrangement of drive arrangement drive end, locate wash the cleaning head of drive arrangement drive end and with the cleaning liquid feeding mechanism of cleaning head connection in order to supply with the cleaning liquid, push down the drive arrangement drive the cleaning head is followed wash drive arrangement and push down, it drives to wash drive arrangement the horizontal reciprocating motion of cleaning head.
According to the LCM automatic assembly process, the cleaning driving device comprises a connecting plate arranged at the driving end of the pressing driving device, a guide rail is transversely arranged on the connecting plate, a sliding block is connected onto the guide rail in a sliding mode, a rack is arranged at the upper end of the sliding block, and a gear meshed with the rack and a gear driving device connected with the gear to drive the gear to rotate are further arranged on the connecting plate.
According to the LCM automatic assembly process, the gum removing device comprises a removing bracket, a vacuum suction head arranged on the removing bracket, a removing mechanical arm and a zebra paper supply area which are arranged on one side of the removing bracket, and a gum collecting area arranged below the vacuum suction head;
the tearing manipulator takes out the zebra paper from the zebra paper supply area and directly faces the zebra paper with the back adhesive on the surface, after the vacuum sucker sucks the back adhesive, the tearing manipulator transfers the zebra paper to the positioning clamp and tears the back adhesive in the process of keeping away from the vacuum sucker.
In the LCM automatic assembly process, the hot pressing mechanism includes a hot pressing support, a hot pressing head disposed on the hot pressing support, a heating device connected to the hot pressing head for heating the hot pressing head, and a hot pressing driving device connected to the hot pressing head for driving the hot pressing head to press downward;
hot pressing mechanism is still including the vision aligning device who is used for detecting whether the hot pressing portion of zebra paper and circuit board aligns and be used for according to vision aligning device signal is with the micromatic setting of zebra paper and circuit board adjustment alignment, vision aligning device locates on the hot pressing support and orientation hot pressing head below, micromatic setting with vision aligning device electric connection just is located the positioning fixture below, micromatic setting includes horizontal regulator and locates the vertical riser on the horizontal regulator, vertical riser upper end is equipped with and can passes the carousel stretches into carry out position control's fine setting chuck with the centre gripping circuit board in the positioning fixture.
According to the LCM automatic assembly process, the number of the hot pressing heads is two, and the two hot pressing heads are arranged in parallel at intervals and are respectively opposite to the hot pressing part of the circuit board and the hot pressing part of the display screen;
the both sides of hot pressing head are equipped with unwinding device and overspeed device tensioner respectively, unwinding device with the overspeed device tensioner tensioning has thermal-insulated silica gel, unwinding device with between the overspeed device tensioner thermal-insulated silica gel is located terminal surface under the hot pressing head, so that hug closely when the hot pressing head pushes down thermal-insulated silica gel.
According to the LCM automatic assembly process, the hot pressing mechanism further comprises a pressure bearing device which is located below the rotary table and corresponds to the hot pressing head, the pressure bearing device comprises a pressure bearing support and a roller which is arranged at the upper end of the pressure bearing support and attached to the lower surface of the rotary table, and a rotating shaft of the roller penetrates through the rotating center of the rotary table so that the roller rotates along with the rotation of the rotary table.
In the LCM automatic assembly process described above, the adhesive-backed mechanism includes: the device comprises a rubberizing bracket, a transverse moving device and an LCM lifting device which are arranged on the rubberizing bracket, a rotating device in driving connection with the transverse moving device, a top pasting device in driving connection with the rotating device, an gum suction head in driving connection with the top pasting device, a clamping head in driving connection with the LCM lifting device, and a gum supply device arranged on one side of the rubberizing bracket;
the LCM lifting device is used for lifting the workpiece on the positioning clamp to expose the back of the zebra paper downwards;
the traversing device is used for moving the rotating device between the gum supply device and the LCM lifting device;
the rotary device is used for turning over downwards at the gum supply device and turning over upwards after the gum suction head sucks the gum;
the top pasting device is used for upwards pasting the back glue on the back of the zebra paper below the LCM lifting device.
Compared with the prior art, the method has the following advantages:
the synchronous compression joint of the zebra paper, the display screen and the circuit board is realized by utilizing LCM automatic assembly equipment, the assembly steps are reduced, and the assembly efficiency is higher.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a perspective view of an LCM automatic assembly apparatus according to an embodiment of the present application.
Fig. 2 is a top view of an LCM automatic assembly apparatus according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a positioning fixture according to an embodiment of the present application.
Fig. 4 is an exploded schematic structural view of the positioning fixture according to the embodiment of the present application.
Fig. 5 is a schematic structural diagram of a hot pressing part cleaning device according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of the back adhesive removing device according to the embodiment of the present application.
Fig. 7 is a schematic structural diagram of a hot press mechanism according to an embodiment of the present application.
Fig. 8 is a schematic partial structure diagram of the hot pressing mechanism according to the embodiment of the present application.
Fig. 9 is an enlarged view of a portion a of fig. 7.
Fig. 10 is a schematic structural diagram of a detection mechanism according to an embodiment of the present application.
Fig. 11 is a schematic structural diagram of a back adhesive applying mechanism according to an embodiment of the present application.
Fig. 12 is an enlarged view of a portion B of fig. 11.
[ detailed description ] embodiments
In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
As shown in fig. 1 to 12, the embodiment of the application provides LCM automatic assembly equipment, is particularly applied to the equipment of LCD display screen, zebra paper, PCBA circuit board, and it includes frame 10, be equipped with carousel formula assembly line 20 that has the carousel in the frame 10, the interval sets up a plurality of positioning fixture 30 on the carousel, centers on carousel week side is equipped with preceding feed mechanism 1, zebra paper feed mechanism 2, hot pressing mechanism 3, detection mechanism 4, gum pasting mechanism 5, product letter sorting mechanism 6 in proper order.
The positioning fixture 30 includes a base 301, the base 301 is provided with a display screen positioning hole 302, a circuit board positioning hole 303, and a zebra paper positioning hole 305 communicating the display screen positioning hole 302 with the circuit board positioning hole 303, and the circuit board positioning hole 303 is provided with a tightening device 304 on a side far from the display screen positioning hole 302 for tightening a circuit board in the circuit board positioning hole 303 towards the display screen positioning hole 302. Optionally, the display screen positioning hole 302 and the circuit board positioning hole 303 are both square counter bores.
The tightening device 304 includes a fixing base 3041 and a telescopic rod 3042 penetrating the fixing base 3041 and capable of performing a telescopic motion relative to the fixing base 3041, wherein the telescopic rod 3042 is provided with a tightening head 3043 at one end facing the circuit board positioning hole 303, the other end of the telescopic rod 3042 is provided with a limit clamp projection 3044, and an elastic member 3045 for pressing the tightening head 3043 toward the circuit board positioning hole 303 is provided between the tightening head 3043 and the fixing base 3041. Specifically, the elastic member 3045 is a compression spring.
When the positioning fixture 30 is used for clamping, the display screen 200 is placed in the display screen positioning hole 302, the circuit board 100 is placed in the circuit board positioning hole 303, the zebra paper 300 is placed in the zebra paper positioning hole 305, and because there is an error in the sizes of the circuit board 100 and the display screen 200, and the accuracy requirement for alignment and connection of the zebra paper 300 with the golden fingers of the display screen 200 and the circuit board 100 is high, the connection between the display screen 200 and the zebra paper 300 is fixed and fixed, and the connection between the circuit board 100 and the zebra paper 300 is movable and fixed, for convenience of description, the direction in which the circuit board 100, the zebra paper 300 and the display screen 200 are connected into a line is taken as the longitudinal direction, and correspondingly, the direction perpendicular to the longitudinal direction, which is moved for aligning the golden fingers one by one, is taken as the transverse direction, that is, the transverse position of the circuit board 100, The zebra paper 300 and the display screen 200 are accurately positioned, so that the zebra paper 300 can be conveniently and simultaneously connected to the circuit board 100 and the display screen 200 in a hot-pressing mode on the next step, and the jacking device 304 can be used for longitudinally pre-tightening and positioning the circuit board 100, so that the circuit board 100 can be conveniently and transversely adjusted.
Correspondingly, through holes 3031 for extending the pneumatic clamping fingers to adjust the position of the circuit board in the holes are formed in two sides of the circuit board positioning hole 303.
The limit stop projection 3044 is screwed onto the extension rod 3042, and the distance between the limit stop projection 3044 and the head 3043 is adjusted by screwing the limit stop projection 3044, so as to adjust the maximum ejection distance of the head 3043. The advantage is that the circuit board positioning hole 303 can accommodate circuit boards of more sizes, and the tightness of ejection can be adjusted when the ejecting device 304 is assembled. The upper part of the tightening surface of the tightening head 3043 is provided with a guide inclined surface 3046. So that the circuit board is guided when placed in the circuit board positioning hole 303.
In this embodiment, the front feeding mechanism 1 includes a circuit board placing area 12 for placing the circuit board 100, a display screen placing area 13 for placing the display screen 200, and a feeding manipulator 11 for transferring the circuit board 100 and the display screen 200 to the corresponding positioning clamp 30 of the turntable; the feeding manipulator 11 is a six-axis manipulator, and a pneumatic suction cup or a pneumatic finger is used for clamping the circuit board 100 and the display screen 200.
The zebra paper feeding mechanism 2 comprises a zebra paper feeding mechanical arm 22 and a back glue tearing device 23 arranged on one side of the zebra paper feeding mechanical arm 22, and is used for tearing back glue of the zebra paper 300 and placing the zebra paper on the positioning clamp 30; zebra paper feed mechanism 2 still includes hot pressing portion cleaning device 21, hot pressing portion cleaning device 21 includes clean frame 210, locates push down drive arrangement 211 on the clean frame 210, locate push down the washing drive arrangement 212 of drive arrangement 211 drive end, locate wash the cleaning head 213 of drive arrangement 212 drive end and with cleaning head 211 is connected with the washing liquid feeding device 214 who supplies the washing liquid, push down drive arrangement 211 drive cleaning head 213 is followed wash drive arrangement 212 and push down, it drives to wash drive arrangement 212 the horizontal reciprocating motion of cleaning head 213. Wherein, the cleaning liquid can adopt alcohol. The cleaning surface of the cleaning head 213 is a sponge pad or a brush. The cleaning head 213 supplies a cleaning liquid through a dispensing valve connected to the cleaning liquid supply device 214. The cleaning device for the hot pressing part cleans the hot pressing part of the display screen and the circuit board by driving the cleaning head to do reciprocating wiping motion after being pressed downwards, and has the advantages of quick and effective action and high automation degree.
Accordingly, two cleaning heads 213 are provided and arranged in parallel. So as to synchronously clean the hot pressing parts on the circuit board 100 and the display screen 200.
The cleaning driving device 212 includes a connecting plate 2120 disposed at a driving end of the pressing driving device 211, a guide rail 2121 is transversely disposed on the connecting plate 2120, a slider 2122 is slidably connected to the guide rail 2121, a rack 2123 is disposed at an upper end of the slider 2122, and the connecting plate 2120 is further provided with a gear 2124 engaged with the rack 2123 and a gear driving device 2125 connected to the gear 2124 to drive the gear 2124 to rotate.
The hot pressing part cleaning device 21 realizes back-and-forth wiping through the matching motion of the gear and the rack so as to clean the hot pressing parts of the circuit board 100 and the display screen 200, has a simple structure, can automatically and synchronously clean the hot pressing parts of the circuit board 100 and the display screen 200, and is easy to manufacture.
Further, the back glue removing device 23 comprises a removing bracket 230, a vacuum suction head 231 arranged on the removing bracket 230, a removing manipulator 232 and a zebra paper supply area 233 arranged on one side of the removing bracket 230, and a back glue collecting area 234 arranged below the vacuum suction head 231; the tearing manipulator 232 takes out the zebra paper 300 from the zebra paper supply area 233 and directly faces the side of the zebra paper 300 with the back adhesive to the vacuum suction head 231, and after the back adhesive is sucked by the vacuum suction head 231, the tearing manipulator 232 transfers the zebra paper 300 to the positioning clamp 30 and tears the back adhesive in the process of being far away from the vacuum suction head 231. Wherein the vacuum suction head 231 is a metal flat head hole connected with a vacuum generator. The tearing manipulator 232 is a six-axis manipulator that uses a pneumatic chuck to clamp.
The gum tearing device 23 is used for tearing the gum of the zebra paper 300 through the combination of the vacuum suction head 231 and the mechanical arm, and is simple and reliable in structure, easy to manufacture and high in tearing efficiency.
The cross section area of a suction hole of the vacuum suction head 231 is 1/20-1/10 of the area of the zebra paper 300. The cross-sectional area of the suction hole of the vacuum suction head 231 is relatively small, so that a suction force can be provided for a point, and particularly when a force is applied to the back adhesive edge of the zebra paper 300, because the air at the edge flows into the space between the zebra paper 300 and the back adhesive, the tearing is quicker and more labor-saving.
The vacuum suction head 231 is connected with a suction head pneumatic switch in a driving manner and used for controlling the vacuum suction head 231 to stop sucking after the gum is torn off so as to drop the torn-off gum.
In this embodiment, the hot pressing mechanism 3 includes a hot pressing support 3a, and locates hot pressing head 31 on the hot pressing support 3a, with hot pressing head 31 is connected in order to heat hot pressing head 31's heating device, with hot pressing head 31 is connected in order to drive hot pressing head 31 is hot pressing drive arrangement 33 of pressfitting downwards, hot pressing head 31 is equipped with two, two hot pressing head 31 interval parallel arrangement just is respectively just right the hot pressing portion of circuit board 100 with the hot pressing portion of display screen 200 to connect zebra paper 300 pressfitting simultaneously circuit board 100 with display screen 200.
The hot-pressing mechanism 3 can connect the zebra paper 300 with the circuit board 100 and the display screen 200 in a hot-pressing mode synchronously, so that the assembly steps are reduced, and the assembly efficiency is higher.
The hot pressing mechanism 3 further comprises a visual alignment device 34 for detecting whether the alignment of the zebra paper 300 and the hot pressing portion of the circuit board 100 is detected, and a fine adjustment device 35 for adjusting the alignment of the zebra paper 300 and the circuit board 100 according to a signal of the visual alignment device 34, the visual alignment device 34 is disposed on the hot pressing support 3a and faces to the lower side of the hot pressing head 31, the fine adjustment device 35 is electrically connected with the visual alignment device 34 and is located below the positioning fixture 30, the fine adjustment device 35 comprises a horizontal adjuster 351 and a longitudinal lifter 352 disposed on the horizontal adjuster 351, and a fine adjustment chuck 353 capable of passing through the turntable and extending into the positioning fixture 30 to clamp the circuit board 100 for position adjustment is disposed at the upper end of the longitudinal lifter 352. The longitudinal lifter 352 drives the fine adjustment clamp 353 to extend upward into the through hole 3031 of the positioning fixture 30, and the horizontal adjuster 351 is used for adjusting the transverse position of the circuit board 100. The circuit board positioning hole 303 is reserved with a clearance for fine adjustment of the fine adjustment device 35, the clearance is 1-3mm, and the fine adjustment device 35 overcomes the friction force generated when the jacking device 304 is pre-tightened for fine adjustment. The fine adjustment device 35 is used in cooperation with the vision alignment device 34 to enable the relative position of the circuit board 100 and the zebra paper 300 to be more accurate, which is beneficial to ensuring the product quality.
The both sides of hot pressing head 31 are equipped with unwinding device 36 and overspeed device tensioner 37 respectively, unwinding device 36 with overspeed device tensioner 37 tensioning has thermal-insulated silica gel 38, unwinding device 36 with between the overspeed device tensioner 37 thermal-insulated silica gel 38 is located terminal surface under the hot pressing head 31, so that hug closely when the hot pressing head 31 pushes down thermal-insulated silica gel 38. Through thermal-insulated silica gel 38, hot pressing head 31 can carry out indirect heating to hot pressing portion, can prevent effectively that hot pressing head 31 direct contact zebra paper from heating and damaging zebra paper.
The hot-pressing mechanism 3 further comprises a pressure-bearing device 39 which is located below the rotary table and corresponds to the hot-pressing head 31, the pressure-bearing device 39 comprises a pressure-bearing support 391 and a roller 392 which is arranged at the upper end of the pressure-bearing support 391 and is attached to the lower surface of the rotary table, the roller 392 is in line contact with the rotary table, and the extension line of the contact line penetrates through the rotation center of the rotary table, so that the roller 392 rotates along with the rotation of the rotary table.
When the hot pressing head 31 of the hot pressing mechanism 3 is pressed down, the turntable generates downward pressure, and the pressure-bearing device 39 can effectively counteract the downward pressure of the hot pressing mechanism 3, so that the hot pressing operation of the hot pressing mechanism 3 is more stable, and the hot pressing connection quality of the zebra paper 300 and the circuit board 100 and the display screen 200 is ensured.
The detection mechanism 4 comprises an energizing device 41 for energizing the display screen, a press-down driving device 42 in driving connection with the energizing device 41, and a visual recognition device 43 for detecting display defects of the display screen. The energizing device 41 is provided with an energizing contact, and when the pressing driving device 42 is pressed downwards, the energizing contact is pressed to a corresponding part of the circuit board 100 to be energized. In particular, the live contact is a conductive metal. The visual recognition device 43 obtains the display status of the display screen through the camera, and recognizes the display defects such as light leakage and incomplete display when the display screen displays through the visual recognition technology.
The gum pasting mechanism 5 comprises a gum supply device 51 for supplying gum and a gum pasting manipulator 52 for pasting the gum to the back of the zebra paper 300; paste gum machine and construct 5 and include: the gluing device comprises a gluing bracket 51, a traversing device 52 and an LCM lifting device 53 which are arranged on the gluing bracket 51, a rotating device 54 which is in driving connection with the traversing device 52, a top gluing device 55 which is in driving connection with the rotating device 54, a gum suction head 56 which is in driving connection with the top gluing device 55, a clamping head 57 which is in driving connection with the LCM lifting device 53, and a gum supply device 58 which is arranged on one side of the gluing bracket 51; wherein the LCM lifting device 53 is used for lifting the workpiece on the positioning clamp 30 to expose the back surface of the zebra paper 300 downwards; the traverse device 52 is used for moving the rotating device 54 between the gum supply device 57 and the LCM lifting device 53; the rotating device 54 is used for turning downwards at the gum supply device 57 and turning upwards after the gum suction head 56 sucks the gum; the top attaching device 55 is used for attaching the back glue on the back of the zebra paper 300 upwards under the LCM lifting device 53. Wherein, the gum suction head 56 is a pneumatic vacuum chuck.
Since the surface of the zebra paper 300 needing to be pasted with the back glue is on the bottom surface, the LCM module is lifted to a certain height through the LCM lifting device 53, then the transverse moving device 52 moves the back glue suction head 56 to the back glue supply device 58, the rotary device 54 drives the back glue suction head 56 to turn downwards and is driven by the top pasting device 55 to suck the back glue downwards and then turns upwards, then the transverse moving device 52 drives the rotary device 54 and the back glue suction head 56 to move to the position below the LCM lifting device 53, and the top pasting device 55 upwards pastes the back glue to the bottom of the zebra paper 300. The gum pasting mechanism 5 is simple in structure, can effectively automate gum pasting operation of the zebra paper, and obviously reduces labor intensity.
The clamping head 57 includes a vacuum chuck 571 and a circuit board flat clamping finger 572 arranged beside the display screen vacuum chuck 571. The vacuum chuck 571 is used for holding the display screen 200, and the flat clamping fingers 572 are used for clamping the circuit board 100. When the vacuum chuck 571 and the circuit board flat clamping fingers 572 are simultaneously grabbed and taken down, the assembled circuit board 100, the display screen 200 and the zebra paper 300 can be stably lifted upwards, so that the operation of applying the back adhesive is facilitated.
The product sorting mechanism 6 includes a non-defective product area 61, a defective product area 62, and a sorting robot 63 that sorts the workpieces on the positioning jig 30 to the non-defective product area 61 and the defective product area 62. Product letter sorting mechanism 6 and detection mechanism 4 electric connection, with signal transmission for product letter sorting mechanism 6 when detection mechanism 4 detects out the defective products, product letter sorting mechanism 6 sorts the work piece to defective products district 62, otherwise sorts to qualified products district 61.
The driving devices may be driven by a motor or a cylinder.
To better understand the technical solution of the present embodiment, the assembly process is described as follows:
the LCM automatic assembly process applies the LCM automatic assembly equipment, wherein one or more positioning clamps 30 are arranged on the turntable, and the process comprises the following steps:
circuit board and display screen material loading: the front feeding mechanism 1 transfers the circuit board 100 and the display screen 200 to the positioning fixture 30 of the turntable;
cleaning a hot-pressing part: and cleaning the parts of the circuit board 100 and the display screen 200 which need to be connected by hot pressing.
Feeding zebra paper: the zebra paper feeding mechanism 2 tears off the back adhesive of the zebra paper 300 and then places the zebra paper on the positioning fixture 30, and enables two ends of the zebra paper 300 to be respectively lapped on the hot pressing part of the circuit board 100 and the hot pressing part of the display screen 200, the hot pressing mechanism 3 simultaneously carries out hot pressing connection on two ends of the zebra paper 300, so that the circuit board 100 and the display screen 200 are electrically connected through the zebra paper 300 and assembled to form an LCM module;
and (3) electrifying detection: the detection mechanism 4 is used for electrifying the LCM module after hot pressing, detecting the display state of the display screen through the visual recognition device 42, judging that the display state is abnormal as a defective product, and judging that the display state is normal as a qualified product;
pasting a back adhesive: the gum pasting mechanism 5 pastes the gum to the back of the zebra paper 300 of the LCM module which shows a qualified standard.
Sorting and stacking: the product sorting mechanism 6 sorts and stacks defective products and qualified products.
The LCM automatic assembly process realizes synchronous compression joint of the zebra paper, the display screen and the circuit board by using LCM automatic assembly equipment, reduces assembly steps and has higher assembly efficiency.
In summary, the present application has, but is not limited to, the following beneficial effects:
1. the LCM automatic assembly equipment realizes the automatic assembly of the circuit board 100, the display screen 200 and the zebra paper 300 through the front feeding mechanism 1, the zebra paper feeding mechanism 2, the hot pressing mechanism 3 and the back adhesive sticking mechanism 5, and can realize the synchronous compression joint of the zebra paper, the display screen and the circuit board by utilizing the matching of the positioning clamp 30 and the hot pressing mechanism 3, so that the assembly steps are reduced, and the assembly efficiency is higher.
2. The positioning fixture 30 can accurately position the circuit board 100, the zebra paper 300 and the display screen 200, so that the zebra paper 300 can be simultaneously connected to the circuit board 100 and the display screen 200 in a hot-pressing manner on the next step, and the jacking device 304 can longitudinally pre-tighten and position the circuit board 100, so that the circuit board 100 can be conveniently and subsequently transversely adjusted.
3. The gum tearing device 23 is used for tearing the gum of the zebra paper 300 through the combination of the vacuum suction head 231 and the mechanical arm, and is simple and reliable in structure, easy to manufacture and high in tearing efficiency.
4. The hot pressing part cleaning device 21 realizes back-and-forth wiping through the matching motion of the gear and the rack so as to clean the hot pressing parts of the circuit board 100 and the display screen 200, has a simple structure, can automatically and synchronously clean the hot pressing parts of the circuit board 100 and the display screen 200, and is easy to manufacture.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application. Furthermore, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms disclosed. Similar or identical methods, structures, etc. as used herein, or several technical inferences or substitutions made on the concept of the present application should be considered as the scope of the present application.
Claims (10)
- An LCM automatic assembly process, applying LCM automatic assembly equipment, said LCM automatic assembly equipment comprising a carousel assembly line (20) having a carousel on which one or more positioning fixtures (30) are provided, characterized in that it comprises the following processes:circuit board and display screen material loading: the front feeding mechanism (1) transfers the circuit board (100) and the display screen (200) to a positioning clamp (30) of the turntable;feeding zebra paper: the zebra paper feeding mechanism (2) tears off the back adhesive of the zebra paper (300) and then places the zebra paper on the positioning fixture (30), two ends of the zebra paper (300) are respectively overlapped on the hot-pressing part of the circuit board (100) and the hot-pressing part of the display screen (200), and the hot-pressing mechanism (3) is used for simultaneously carrying out hot-pressing connection on two ends of the zebra paper (300), so that the circuit board (100) and the display screen (200) are electrically connected through the zebra paper (300) and assembled to form an LCM module;and (3) electrifying detection: the detection mechanism (4) is used for electrifying the LCM module after hot pressing, detecting the display state of the display screen through the visual recognition device (42), judging that the display state is abnormal as a defective product, and judging that the display state is normal as a qualified product;pasting a back adhesive: and the gum pasting mechanism (5) pastes the gum to the back of the zebra paper (300) of the LCM module which shows the qualification.
- 2. The LCM automatic assembly process of claim 1, wherein the process between the process circuit board and display screen feeding and the process zebra paper feeding further comprises the following processes: cleaning a hot-pressing part: and cleaning the parts of the circuit board (100) and the display screen (200) which need to be subjected to hot-pressing connection.
- 3. The LCM automatic assembly process of claim 1, further comprising the following steps after the step of applying the back glue: sorting and stacking: and the product sorting mechanism (6) sorts and stacks defective products and qualified products.
- 4. The LCM automatic assembly process according to claim 3, wherein the zebra paper feeding mechanism (2) comprises a hot-pressing part cleaning device (21), a zebra paper feeding mechanical arm (22) and a back glue tearing device (23) arranged on one side of the zebra paper feeding mechanical arm (22);hot splenium cleaning device (21) are including cleaning frame (210), locate push down drive arrangement (211), locate on cleaning frame (210) push down drive arrangement (212) of drive arrangement (211) drive end, locate wash the cleaning head (213) of drive arrangement (212) drive end and with cleaning head (211) are connected in order to supply washing liquid's washing liquid feeding device (214), push down drive arrangement (211) drive cleaning head (213) are followed wash drive arrangement (212) and push down, wash drive arrangement (212) drive cleaning head (211) horizontal reciprocating motion.
- 5. The LCM automatic assembly process of claim 4, wherein the cleaning driving device (212) comprises a connecting plate (2120) arranged at the driving end of the downward pressing driving device (211), a guide rail (2121) is transversely arranged on the connecting plate (2120), a sliding block (2122) is slidably connected on the guide rail (2121), a rack (2123) is arranged at the upper end of the sliding block (2122), a gear (2124) meshed with the rack (2123) and a gear driving device (2125) connected with the gear (2124) to drive the gear (2124) to rotate are further arranged on the connecting plate (2120).
- 6. The LCM automatic assembly process of claim 4, wherein the gum removing device (23) comprises a removing bracket (230), a vacuum suction head (231) arranged on the removing bracket (230), a removing manipulator (232) and a zebra paper supply area (233) arranged on one side of the removing bracket (230), and a gum collecting area (234) arranged below the vacuum suction head (231);the tearing manipulator (232) takes out the zebra paper (300) from the zebra paper supply area (233) and enables the side, which is adhered with the back adhesive, of the zebra paper (300) to be right opposite to the vacuum suction head (231), and after the back adhesive is sucked by the vacuum suction head (231), the tearing manipulator (232) transfers the zebra paper (300) to the positioning clamp (30) and tears the back adhesive in the process of being far away from the vacuum suction head (231).
- 7. The LCM automatic assembly process according to claim 1, wherein the hot pressing mechanism (3) comprises a hot pressing bracket (3a), a hot pressing head (31) arranged on the hot pressing bracket (3a), a heating device connected with the hot pressing head (31) to heat the hot pressing head (31), and a hot pressing driving device (33) connected with the hot pressing head (31) to drive the hot pressing head (31) to press downwards;the hot pressing mechanism (3) also comprises a visual alignment device (34) for detecting whether the zebra paper (300) is aligned with the hot pressing part of the circuit board (100) or not and a fine adjustment device (35) for adjusting the zebra paper (300) to be aligned with the circuit board (100) according to the signal of the visual alignment device (34), the visual alignment device (34) is arranged on the hot-pressing bracket (3a) and faces to the lower part of the hot-pressing head (31), the fine-tuning device (35) is electrically connected with the visual alignment device (34) and is positioned below the positioning clamp (30), the fine adjustment device (35) comprises a horizontal regulator (351) and a longitudinal lifter (352) arranged on the horizontal regulator (351), the upper end of the longitudinal lifter (352) is provided with a fine adjustment chuck (353) which can penetrate through the turntable and extend into the positioning clamp (30) to clamp the circuit board (100) for position adjustment.
- 8. The LCM automatic assembly process according to claim 7, wherein two hot pressing heads (31) are provided, and the two hot pressing heads (31) are arranged in parallel at intervals and respectively face the hot pressing part of the circuit board (100) and the hot pressing part of the display screen (200);the both sides of hot pressing head (31) are equipped with unwinding device (36) and overspeed device tensioner (37) respectively, unwinding device (36) with overspeed device tensioner (37) tensioning has thermal-insulated silica gel (38), unwinding device (36) with between overspeed device tensioner (37) thermal-insulated silica gel (38) are located terminal surface under hot pressing head (31), so that hug closely when hot pressing head (31) pushes down thermal-insulated silica gel (38).
- 9. The LCM automatic assembly process according to claim 8, wherein the hot pressing mechanism (3) further comprises a pressure bearing device (39) corresponding to the hot pressing head (31) and positioned below the rotating disc, the pressure bearing device (39) comprises a pressure bearing bracket (391) and a roller (392) arranged at the upper end of the pressure bearing bracket (391) and attached to the lower surface of the rotating disc, and the rotating shaft of the roller (392) penetrates through the rotating center of the rotating disc so that the roller (392) rotates along with the rotation of the rotating disc.
- 10. The LCM automatic assembly process according to claim 1, wherein the gum-applying mechanism (5) comprises: the gluing device comprises a gluing bracket (51), a traversing device (52) and an LCM lifting device (53) which are arranged on the gluing bracket (51), a rotating device (54) which is in driving connection with the traversing device (52), a top gluing device (55) which is in driving connection with the rotating device (54), a gum suction head (56) which is in driving connection with the top gluing device (55), a clamping head (57) which is in driving connection with the LCM lifting device (53), and a gum supply device (58) which is arranged on one side of the gluing bracket (51);the LCM lifting device (53) is used for lifting the workpiece on the positioning clamp (30) to expose the back of the zebra paper (300) downwards;the traversing device (52) is used for moving the rotating device (54) between the gum supply device (57) and the LCM lifting device (53);the rotating device (54) is used for turning downwards at the gum supply device (57) and turning upwards after the gum suction head (56) sucks the gum;the top attaching device (55) is used for attaching the back adhesive to the back of the zebra paper (300) upwards under the LCM lifting device (53).
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| CN110919346B (en) | 2021-10-08 |
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