A full-automatic FOG bonding machine and a bonding method

Abstract

The application relates to a full-automatic FOG bonding machine and a bonding method. The full-automatic FOG bonding machine comprises a mounting platform, a pasting mechanism, a pre-pressing mechanism and a main pressing mechanism which are sequentially arranged on the mounting platform. The mounting platform is provided with a guide rail, and a feeding machine arm, a first linkage transfer arm, a second linkage transfer arm and a discharging machine arm are arranged on the guide rail. The pasting mechanism pastes a plurality of separated ACF films on the surface of an un-pasted workpiece, thereby reducing the use amount of the ACF films in the non-functional area; the pre-pressing mechanism pre-presses an FPC plate on the plurality of separated ACF films, thereby realizing the temporary joint of the FPC plate and the workpiece; the main pressing mechanism is provided with a plurality of pressing heads with adjustable gaps, and the pressing heads are precisely pressed on the plurality of separated ACF films under the FPC plate, thereby realizing the permanent joint of the electrical connection between the FPC plate and the workpiece, reducing the main pressing time and making the main pressing time close to the pre-pressing time. The full-automatic FOG bonding machine realizes the production line operation of continuously completing the curing joint of the patterned segmented ACF film between the FPC plate and the workpiece by using the guide rail of one mounting platform.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of FOG bonding, in particular to a full-automatic FOG bonding machine and a bonding method. BACKGROUND

[0002] LCM (Liquid Display Module) is an assembly of a liquid crystal display screen, a driving circuit, a FPC (Flexible Printed Circuit), a backlight source and other structural components. In the liquid crystal display screen, a driving IC (integrated circuit) is integrated on the LCD (Liquid Crystal Display) glass, and then mechanically connected with the FPC. The production process of the LCD module and the FPC is a FOG (Film On Glass) bonding process, that is, the FPC is carried on the LCD module.

[0003] The FOG bonding process mainly includes: (1) ACF attachment, a specified length of ACF is attached to the ITO terminal of the liquid crystal glass or the pin of the FPC to be bonded; (2) pre-pressing, the pins of the FPC and the ITO terminal of the liquid crystal glass are aligned and pre-pressed to form a preliminary connection through the auxiliary image system on the FOG bonding machine; (3) main pressing, the LCM product after pre-bonding is subjected to main bonding under high temperature and pressure, the electrical connection between the FPC and the liquid crystal glass is realized through the deformation of the ACF conductive particles and the rupture of the insulating layer, and the FPC and the liquid crystal glass are connected together through the polymerization and hardening of the ACF glue under high temperature to provide sufficient mechanical connection strength.

[0004] The FOG bonding process in the market has a large difference in the operation time of the ACF attachment, pre-pressing and main pressing processes, which leads to the need for separate machines for each production process, reducing the production efficiency of the product.

[0005] The utility model patent number CN201440189U discloses a multi-section FOG hot press, which comprises a platform and four mechanisms: an LCD loading platform, a pre-pressing mechanism, a left main pressing mechanism and a right main pressing mechanism. The four mechanisms are installed on the platform of a supporting assembly. The moving platform and the pre-pressing mechanism are located in the middle of the multi-section FOG hot press. The left main pressing mechanism is located at the left end of the multi-section FOG hot press, and the right main pressing mechanism is located at the right end of the multi-section FOG hot press. In the related prior art, a combination scheme of one pre-pressing mechanism and two main pressing mechanisms is adopted, which does not change the pre-pressing production efficiency and improves the main pressing production efficiency to balance the production efficiency of the pre-pressing and the main pressing. However, the main pressing time is not twice the pre-pressing time, so there is still a technical problem of a large difference in the operation time of the pre-pressing and the main pressing processes.

[0006] The utility model discloses a FOG pre -pressing all -in -one, including base, be equipped with bottom plate on the base, the bottom plate divides into front end portion and rear end portion, and is equipped with pre -pressing mechanism and FPC feeding mechanism on the front end portion and rear end portion, the pre -pressing mechanism includes along the pre -pressing head mechanism of setting first linear direction and the press head mechanism, the press head mechanism is at least two, and the pre -pressing head mechanism is located between the press head mechanism, the pre -pressing mechanism still includes along the screw rod guide rail pair of setting second linear direction parallel with first linear direction, the screw rod guide rail pair is placed in the front of pre -pressing head mechanism and press head mechanism, is equipped with the press platform corresponding number of press head mechanism with on the screw rod guide rail pair. The application greatly improves production efficiency, reduces the floor space. In the related prior art, without changing the pre -pressing head quantity, increase the number of press head and improve the press efficiency. But the gap between the press head leads to the inaccuracy of the press. SUMMARY

[0007] In order to solve the technical problem that the FOG bonding process has a large difference in operation time in ACF attaching, pre-pressing and press processes, resulting in the need for separate machines for each production process and reducing the production efficiency of products, the application provides a full-automatic FOG bonding machine and a bonding method.

[0008] In a first aspect, the application provides a full-automatic FOG bonding machine, which adopts the following technical solution:

[0009] A full-automatic FOG bonding machine, comprising:

[0010] A mounting platform is provided with a guide rail, and an upper feeding machine arm, a first linkage transfer arm, a second linkage transfer arm and a lower feeding machine arm are slidably arranged on the guide rail;

[0011] An attaching mechanism is arranged on the mounting platform, and the attaching mechanism comprises a film segmented attaching table for supplying ACF film and an attaching transfer platform for loading and unloading workpieces on the film segmented attaching table, and the upper feeding machine arm supplies unattached workpieces to the attaching transfer platform;

[0012] A pre-pressing mechanism is arranged on the mounting platform, and the pre-pressing mechanism comprises a pre-pressing table for supplying FPC boards and a pre-pressing transfer platform for loading and unloading workpieces on the pre-pressing table, and the first linkage transfer arm supplies unpre-pressed workpieces to the pre-pressing transfer platform from the attaching transfer platform;

[0013] The pressing mechanism is arranged on the mounting platform, and comprises a pressing gap adjustable pressing table and a pressing transfer platform for loading and unloading workpieces on the pressing gap adjustable pressing table, the second transfer arm is supplied with non-pressing workpieces by the pre-pressing transfer platform; and the unloading machine arm is unloaded by the pressing transfer platform.

[0014] When the feeding machine arm supplies the non-adhesion workpiece to the adhesion transfer platform, the first transfer arm and the second transfer arm are located at the adhesion reset point of the guide rail; and when the first transfer arm and the second transfer arm supply non-pre-pressing workpieces to the pre-pressing transfer platform and non-pressing workpieces to the pressing transfer platform respectively and simultaneously, the feeding machine arm is located at the pre-pressing and pressing reset point of the guide rail.

[0015] By adopting the above technical scheme, the adhesion mechanism adheres a plurality of separated ACF films to the surface of the non-adhesion workpiece, thereby reducing the use amount of ACF films in the non-functional area. The pre-pressing mechanism pre-presses the FPC plate on the plurality of separated ACF films, thereby realizing the temporary connection of the FPC plate and the workpiece. The pressing mechanism with adjustable gap precisely presses the plurality of separated ACF films under the FPC plate by using a plurality of pressing heads, thereby realizing the permanent connection of the FPC plate and the workpiece and reducing the pressing time, which is close to the pre-pressing time. The full-automatic FOG bonding machine realizes the production line operation of the curing and connection of the patterned segmented ACF film between the FPC plate and the workpiece by using one mounting platform and the guide rail.

[0016] Optionally, the feeding machine arm is provided with a feeding suction nozzle, the first transfer arm is provided with a first transfer suction nozzle, the second transfer arm is provided with a second transfer suction nozzle, and the unloading machine arm is provided with an unloading suction nozzle.

[0017] By adopting the above technical scheme, the suction nozzles vacuum adsorb and move the workpieces, and the vacuum adsorption of the workpieces is easy to catch and release the workpieces.

[0018] Optionally, the first transfer arm and the second transfer arm are fixedly connected.

[0019] By adopting the above technical scheme, the workpiece transfer between the adhesion mechanism, the pre-pressing mechanism and the pre-pressing mechanism and the pressing mechanism can be synchronized, thereby reducing the number of independent moving parts of the full-automatic FOG bonding machine, and further reducing the failure rate of the FOG bonding machine.

[0020] Optionally, the adhesion mechanism, the pre-pressing mechanism and the pressing mechanism are each provided with two groups.

[0021] By adopting the above technical scheme, the production efficiency of the product is improved.

[0022] Optionally, the attaching transfer platform, the pre-pressing transfer platform and the pressing transfer platform can drive the workpiece to move in three dimensions on the mounting platform.

[0023] By adopting the above technical solution, the workpiece can move on the mounting platform, and be accurately positioned in the attaching area of the attaching mechanism, the pre-pressing area of the pre-pressing mechanism and the pressing area of the pressing mechanism.

[0024] Optionally, the pressing table is provided with a plurality of pressing units capable of moving in the X direction, and each pressing unit comprises a pressing head, a heater arranged on the pressing head, a heat sink arranged on the heater, a pressing cylinder arranged on the heat sink, an extension rod arranged on the pressing cylinder and a pressing drive motor arranged on the extension rod.

[0025] By adopting the above technical solution, the plurality of pressing heads with adjustable gaps can accurately press the plurality of separated ACF films under the FPC board, realize the permanent bonding of the electrical connection between the FPC board and the workpiece, and reduce the pressing time, which is close to the pre-pressing time.

[0026] Optionally, the heater has an opening, and the pressing head is embedded in the opening to increase the contact area between the pressing head and the heater.

[0027] By adopting the above technical solution, the contact area between the pressing head and the heater is increased, and the heating speed of the pressing head is improved.

[0028] Optionally, the pressing table is provided with a visual detection positioner for detecting the position of the workpiece on the pressing transfer platform, so that the pressing transfer platform can correct the workpiece.

[0029] By adopting the above technical solution, after the visual detection positioner detects the loading position of the workpiece, the pressing transfer platform corrects the relative position of the workpiece and the pressing table, and realizes the accurate positioning of the pressing area of the workpiece and the pressing head.

[0030] In a second aspect, the application provides a FOG bonding method, which adopts the following technical solution:

[0031] A FOG bonding method comprises the full-automatic FOG bonding machine according to any one of the above technical solutions, and the FOG bonding method comprises the following steps:

[0032] S1, attaching a plurality of separated ACF films on the surface of the workpiece in the film segmented attaching table through the feeding of the feeding machine arm on the guide rail;

[0033] S2, pre-pressing the FPC board on the plurality of separated ACF films in the pre-pressing table through the first linkage transfer arm on the guide rail to temporarily bond the FPC board and the workpiece;

[0034] S3, through the second linkage transfer arm on the guide rail, the gap adjustable multi-pressure head precise pressing in the gap adjustable multi-pressure head in the FPC plate under the multi-segment separated ACF film, realizing the permanent joint of the electrical connection between the FPC plate and the workpiece;

[0035] S4, through the blanking machine arm on the guide rail, the workpiece with FPC plate moves out of the mounting platform;

[0036] Wherein, the first time of the first linkage transfer arm and the second linkage transfer arm moving to the attachment reset point of the guide rail includes the feeding work of the feeding machine arm in step S, and the second time of the feeding machine arm moving to the pre-pressing self-pressing reset point of the guide rail includes the transfer work of the first linkage transfer arm in step S and the second linkage transfer arm in step S.

[0037] By adopting the above technical scheme, the full-automatic FOG bonding machine realizes the production line operation of continuously completing the curing combination of the patterned segmented ACF film between the FPC plate and the workpiece on the guide rail of one mounting platform.

[0038] Optionally, in step S1, the unattached workpiece is loaded on the attachment table by the attachment transfer platform; in step S2, the unpre-pressed workpiece is loaded on the pre-pressing table by the pre-pressing transfer platform; and in step S3, the unself-pressing workpiece is loaded on the self-pressing table by the self-pressing transfer platform.

[0039] By adopting the above technical scheme, the unattached workpiece is loaded on the attachment table by the attachment transfer platform; in step S2, the unpre-pressed workpiece is loaded on the pre-pressing table by the pre-pressing transfer platform; and in step S3, the unself-pressing workpiece is loaded on the self-pressing table by the self-pressing transfer platform.

[0040] In summary, the technical scheme of the embodiment of the present application has at least one of the following beneficial technical effects:

[0041] 1. The attachment mechanism attaches the multi-segment separated ACF film to the surface of the unattached workpiece, reducing the amount of ACF film in the non-functional area. The pre-pressing mechanism pre-presses the FPC plate on the multi-segment separated ACF film, realizing the temporary joint of the FPC plate and the workpiece. The self-pressing mechanism gap-adjustable multi-pressure head precisely presses the multi-segment separated ACF film under the FPC plate, realizing the permanent joint of the electrical connection between the FPC plate and the workpiece, and reducing the self-pressing time, which is close to the pre-pressing time. The full-automatic FOG bonding machine realizes the production line operation of continuously completing the curing combination of the patterned segmented ACF film between the FPC plate and the workpiece on the guide rail of one mounting platform;

[0042] 2. The attachment mechanism, the pre-pressing mechanism and the self-pressing mechanism are designed in two groups, which doubles the production efficiency of the FOG bonding machine;

[0043] 3. The first and second transfer arms move to the first time of the attachment reset point of the guide rail, which includes the feeding work of the feeding machine arm, and the feeding machine arm moves to the second time of the pre-pressing and pressing reset point of the guide rail, which includes the transfer work of the first and second transfer arms, so as to realize the shared guide rail of the feeding machine arm, the first and second transfer arms and the discharging machine arm without mutual interference. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 The full-automatic FOG bonding machine of the present application is shown in the perspective structural schematic diagram.

[0045] Figure 2 The feeding machine arm, the first and second transfer arms and the discharging machine arm of the present application are connected to the guide rail, as shown in the structural schematic diagram.

[0046] Figure 3 The pre-pressing table of the present application is shown in the perspective structural schematic diagram.

[0047] Figure 4 The pre-pressing table of the present application is shown in the perspective structural schematic diagram.

[0048] Figure 5 The pre-pressing table of the present application is shown in the perspective structural schematic diagram.

[0049] Figure 6 The attachment table is shown in the structural schematic diagram.

[0050] Figure 7 The attachment table is shown in the structural schematic diagram.

[0051] Figure 8 The pre-pressing table is shown in the front structural schematic diagram.

[0052] Figure 9 The pre-pressing table is shown in the front structural schematic diagram. Figure 8 The pre-pressing table is shown in the front structural schematic diagram.

[0053] Figure 10 The pre-pressing table is shown in the front structural schematic diagram.

[0054] Figure 11 The pre-pressing table is shown in the front structural schematic diagram.

[0055] Explanation of reference signs: 10, mounting platform; 11, guide rail; 20, attaching mechanism; 21, attaching table; 22, attaching transfer platform; 23, attaching assembly; 231, attaching pressure head; 232, attaching back support; 233, camera; 234, pressure head heating plate; 235, heat insulation plate; 236, attaching air cylinder; 237, back support heating plate; 24, ACF breaking assembly; 241, pushing cutter; 242, top support; 243, pushing air cylinder; 25, material belt assembly; 251, material feeding disc; 252, protective film stripping assembly; 253, first guide wheel; 254, second guide wheel; 255, third guide wheel; 256, weight; 257, pressing wheel; 26, attaching support; 30, pre-pressing mechanism; 31, pre-pressing table; 32, pre-pressing transfer platform; 33, pre-pressing material taking assembly; 321, connecting piece; 322, second suction nozzle; 323, suction disc; 34, pre-pressing back support; 331, groove; 332, pre-pressing support; 333, light path detection hole; 35, pre-pressing alignment assembly; 341, adsorption type pre-pressing pressure head; 342, rotating assembly; 343, lifting assembly; 344, pre-pressing alignment camera; 345, spacing adjusting assembly; 36, pre-pressing feeding assembly; 351, transfer platform; 352, feeding box; 353, recycling box; 354, feeding alignment camera; 355, tray; 356, baffle; 357, feeding air cylinder; 37, pre-pressing support; 40, pressing mechanism; 41, pressing table; 42, pressing transfer platform; 421, X-axis; 422, Y-axis; 423, Z-axis; 424, C-axis; 425, vacuum adsorption area; 43, pressing unit; 431, pressing pressure head; 432, heater; 433, heat sink; 434, pressing air cylinder; 435, telescopic rod; 436, pressing driving motor; 437, limiting rod; 44, visual detection positioner; 45, long limiting groove; 50, feeding robot arm; 51, feeding suction nozzle; 60, first connecting transfer arm; 61, first transfer suction nozzle; 70, second connecting transfer arm; 71, second transfer suction nozzle; 80, discharging robot arm; 81, discharging suction nozzle; 100, workpiece; 200, ACF material belt. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, other embodiments obtained by those skilled in the art under the premise of understanding the inventive concept of the present application all fall within the scope of protection of the present application.

[0057] It should be noted that if the application embodiments involve directionality indication (such as up, down, left, right, front, back, …), the directionality indication is only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indication also changes accordingly.

[0058] In order to facilitate the understanding of the technical solutions of the present application, the full-automatic FOG bonding machine and the FOG bonding method of the present application will be described in further detail below, but not as the protection scope defined by the present application.

[0059] With reference to Figure 1 The application embodiments disclose a full-automatic FOG bonding machine, which comprises a mounting platform 10, an attaching mechanism 20, a pre-pressing mechanism 30 and a main pressing mechanism 40. The mounting platform 10 is provided with a guide rail 11 and is located on one side of the mounting platform 10. An upper feeding machine arm 50, a first linkage transfer arm 60, a second linkage transfer arm 70 and a lower feeding machine arm 80 are sequentially and slidably arranged on the guide rail 11. The attaching mechanism 20 is arranged on the mounting platform 10. The attaching mechanism 20 comprises a film segmented attaching table 21 for supplying ACF film and an attaching transfer platform 22 for loading and unloading workpieces 100 on the film segmented attaching table 21. The upper feeding machine arm 50 supplies unattached workpieces 100 to the attaching transfer platform 22. The pre-pressing mechanism 30 is arranged on the mounting platform 10. The pre-pressing mechanism 30 comprises a pre-pressing table 31 for supplying FPC boards and a pre-pressing transfer platform 32 for loading and unloading workpieces 100 on the pre-pressing table 31. The first linkage transfer arm 60 supplies unpre-pressed workpieces 100 to the pre-pressing transfer platform 32 from the attaching transfer platform 22. The main pressing mechanism 40 is arranged on the mounting platform 10. The main pressing mechanism 40 comprises a main pressing table 41 with adjustable pressing gap and a main pressing transfer platform 42 for loading and unloading workpieces 100 on the main pressing table 41 with adjustable pressing gap. The second linkage transfer arm 70 supplies unmain-pressed workpieces 100 to the main pressing transfer platform 42 from the pre-pressing transfer platform 32. The lower feeding machine arm 80 feeds from the main pressing transfer platform 42. The attaching mechanism 20, the pre-pressing mechanism 30 and the main pressing mechanism 40 are each provided with two groups arranged side by side, thereby increasing the production efficiency.

[0060] When the upper feeding machine arm 50 supplies unattached workpieces 100 to the attaching transfer platform 22, the first linkage transfer arm 60 and the second linkage transfer arm 70 are located at the attaching reset point of the guide rail 11. When the first linkage transfer arm 60 and the second linkage transfer arm 70 individually and simultaneously supply unpre-pressed workpieces 100 to the pre-pressing transfer platform 32 and supply unmain-pressed workpieces 100 to the main pressing transfer platform 42, the upper feeding machine arm 50 is located at the pre-pressing and main pressing reset point of the guide rail 11.

[0061] Referring to Figure 2 The loading machine arm 50, the first transfer arm 60, the second transfer arm 70 and the unloading machine arm 80 are each provided with two groups, each group having two arms. One end of the loading machine arm 50 is provided with a loading nozzle 51, one end of the first transfer arm 60 is provided with a first transfer nozzle 61, one end of the second transfer arm 70 is provided with a second transfer nozzle 71, and one end of the unloading machine arm 80 is provided with an unloading nozzle 81. The first transfer arm 60 and the second transfer arm 70 are fixedly connected, and can simultaneously supply the pre-pressing mechanism 30 with un-pre-pressed workpieces 100 and the pressing mechanism 40 with un-pressed workpieces 100.

[0062] Referring to Figure 3 The pressing table 41 is provided with a plurality of X-directionally movable pressing units 43, a through-type long slot for the pressing units 43 to pass through, and a visual detection positioner 44 for detecting the position of the workpiece 100 on the pressing transfer platform 42, so that the pressing transfer platform 42 can correct the workpiece 100. Preferably, the visual detection positioner 44 is a CCD camera.

[0063] Referring to Figure 4 The pressing unit 43 comprises a pressing head 431, a heater 432, a heat sink 433, a pressing cylinder 434, a telescopic rod 435 and a pressing drive motor 436. The heater 432 is arranged on the pressing head 431 to warm the pressing head 431, and the heat sink 433 is arranged between the heater 432 and the pressing cylinder 434 to prevent the heat sink 433 from transferring heat to the pressing cylinder 434. The telescopic rod 435 is arranged on the pressing cylinder 434 and the pressing drive motor 436, and the telescopic rod 435 is elongated when the pressing cylinder 434 drives the pressing head 431 to press down. The heater 432 has an opening, which is in the shape of an inverted "L", and the pressing head 431 is embedded in the opening, thereby increasing the contact area between the pressing head 431 and the heater 432 and shortening the time required for the heater 432 to warm the pressing head 431.

[0064] Referring to Figure 5The current pressing transfer platform 42 is provided with an X axis 421, a Y axis 422, a Z axis 423 and a C axis 424 capable of rotating in the direction of the Z axis 423. The X axis 421 is fixed on the mounting platform 10, the Y axis 422 is connected on the X axis 421, the Z axis 423 is connected on the Y axis 422, and the C axis 424 is connected on the Z axis 423. The X axis 421, the Y axis 422 and the Z axis 423 all have a motor, a lead screw driven by the motor, a connecting block sleeved on the lead screw, mutually parallel guide rails 11 located on both sides of the lead screw and a sliding block sleeved on the guide rails 11. The Y axis 422 is connected on the sliding block and the connecting block of the X axis 421, the Z axis 423 is connected on the sliding block and the connecting block of the Y axis 422, and the C axis 424 is connected on the sliding block and the connecting block of the Z axis 423. The C axis 424 can rotate in the direction of the Z axis 423. The power transfer platform has a vacuum adsorption area 425, and the size of the adsorption area can be adjusted by opening and closing the adjusting valve.

[0065] The attaching transfer platform 22, the pre-pressing transfer platform 32 and the current pressing transfer platform 42 have the same structure. The attaching transfer platform 22 is used to carry and move the unattached workpiece 100 and the attached workpiece 100, the pre-pressing transfer platform 32 is used to carry and move the unpre-pressed workpiece 100 and the pre-pressed workpiece 100, and the current pressing transfer platform 42 is used to carry and move the uncurrent-pressed workpiece 100 and the current-pressed workpiece 100.

[0066] Referring to Figure 6 The attaching table 21 of the full-automatic FOG bonding machine includes a mounting seat, a workpiece transfer platform connected on the mounting seat, an attaching assembly 23, an ACF breaking assembly 24, a material belt assembly 25 and an attaching support 26.

[0067] Referring to Figure 7 The attaching assembly 23 is connected on the attaching support 26, and the attaching assembly 23 includes an attaching pressing head 231, an attaching back support 232 located directly below the attaching pressing head 231, a pressing head heating plate 234 connected on the attaching pressing head 231, a heat insulation plate 235 connected on the pressing head heating plate 234, an attaching air cylinder 236 connected on the heat insulation plate 235 and a camera 233 located in front of the attaching air cylinder 236. The pressing head heating plate 234 heats the attaching pressing head 231 so that the ACF is more easily separated from the ACF material belt 200 and attached to the workpiece 100. The heat insulation plate 235 is used to insulate the heat of the pressing head heating plate 234 to protect the attaching air cylinder 236. The attaching back support 232 is connected with a back support heating plate 237 below to heat the attaching back support 232, so that the two surfaces of the ACF attaching area of the workpiece 100 are uniformly heated. The camera 233 can be a CCD vision camera.

[0068] The ACF cutting assembly 24 is connected to the attaching bracket 26, the ACF cutting assembly 24 includes a pushing cutter 241, a supporting block 242 above the pushing cutter 241, and a pushing cylinder 243 connected to the pushing cutter 241. The pushing cylinder 243 pushes the pushing cutter 241 to move towards the supporting block 242, so that the pushing cutter 241 cuts the ACF film on the ACF tape 200 between the pushing cutter 241 and the supporting block 242. The ACF tape 200 has a three-layer film structure, including a bottom film, a protective film, and an ACF film between the two films.

[0069] The tape assembly 25 is connected to the attaching bracket 26, the tape assembly 25 includes a feeding disc 251, a protective film stripping assembly 252 on the side of the feeding disc 251, a first guide wheel 253 below the protective film stripping assembly 252, a weight 256 connected to the first guide wheel 253, a second guide wheel 254, a third guide wheel 255 at the same horizontal plane as the second guide wheel 254, and a pressing wheel 257 above the third guide wheel 255. The protective film stripping assembly 252, the first guide wheel 253, and the second guide wheel 254 are on the same side, and the third guide wheel 255 and the pressing wheel 257 are on the other side. The ACF tape 200 is placed in the feeding disc 251, and the protective film stripping assembly 252 strips the protective film of the ACF tape 200, exposing the ACF film between the protective film and the bottom film. The ACF tape 200 is guided by the first guide wheel 253, the second guide wheel 254, and the third guide wheel 255 to make the ACF film face the side of the pushing cutter 241 and the attaching backing 232, so that the ACF film is cut and attached. The weight 256 is behind the feeding disc 251, and the weight 256 adjusts the lifting of the first guide wheel 253 and cooperates with the pressing wheel 257 to clamp the ACF tape 200 to maintain the stable tension of the ACF tape 200. The second guide wheel 254 and the third guide wheel 255 are respectively on the two sides of the attaching head 231 and the pushing cutter 241, and the ACF tape 200 is parallel to the base between the second guide wheel 254 and the third guide wheel 255, so that the pushing cutter 241 accurately cuts the required length of the ACF film, and the attaching head 231 applies uniform attaching pressure to the ACF.

[0070] Referring to Figure 8The pre-pressing table 31 of the full-automatic FOG bonding machine comprises a pre-pressing support 37, two groups of pre-pressing material taking assemblies 33 arranged on the pre-pressing support 37, two pre-pressing back supports 34 fixed on the pre-pressing support 37, two groups of pre-pressing alignment assemblies 35 arranged on the pre-pressing support 37, and two groups of pre-pressing material supplying assemblies 36 arranged on both sides of the pre-pressing support 37; the pre-pressing material taking assemblies 33, the pre-pressing back supports 34, the pre-pressing alignment assemblies 35 and the pre-pressing material supplying assemblies 36 are symmetrically arranged on the pre-pressing support 37.

[0071] With reference to Figure 9 , the pre-pressing material taking assembly 33 comprises a linkage 321, a reversible second suction nozzle 322 arranged on the linkage 321, and a suction disc 323 arranged on the linkage 321; the pre-pressing material taking assembly 33 is located above the pre-pressing back support 34. The linkage 321 can slide along a horizontal moving guide rail 11 connecting the front and back surfaces of the pre-pressing table 31; the linkage 321 can drive the second suction nozzle 322 and the suction disc 323 to move along the guide rail 11; the linkage 321 is provided with a vertical moving guide rail 11 allowing the second suction nozzle 322 and the suction disc 323 to move up and down.

[0072] The second suction nozzle 322 is connected to a rotating shaft of the linkage assembly; the second suction nozzle 322 rotates along the direction away from the suction disc 323 through the rotating shaft, so that the suction port of the second suction nozzle 322 faces downward to adsorb the first chip. The second suction nozzle 322 can be replaced according to the size of the first chip.

[0073] The suction disc 323 is arranged at the side of the second suction nozzle 322; the suction disc 323 is close to the side of the pre-pressing back support 34 and is provided with a suction surface for adsorbing the FPC flexible plate.

[0074] With reference to Figure 10 , the pre-pressing back support 34 comprises a groove 331 for accommodating the second chip on the FPC flexible plate, a pre-pressing support 332 formed at one side of the groove 331, and a light path detection hole 333 formed at the side of the pre-pressing support 332, the number of which can be two. The side of the pre-pressing back support 34 away from the groove 331 is horizontally fixed on the pre-pressing support 37.

[0075] The pre-pressing alignment assembly 35 comprises a lifting assembly 343 fixed on the upper half of the pre-pressing support 37, a rotating assembly 342 connected to the lifting assembly 343, and a suction type pre-pressing head 341 connected to the rotating assembly 342. The suction type pre-pressing head 341 is close to the side of the pre-pressing back support 34 and is provided with a suction port for adsorbing the first chip or the FPC flexible plate.

[0076] The pre-press alignment assembly 35 further comprises a spacing adjustment assembly 345 arranged at the lower half of the pre-press support 37 and two pre-press alignment cameras 344 connected to the spacing adjustment assembly 345. The pre-press alignment cameras 344 are located right below the adsorptive pre-press head 341. The spacing adjustment assembly 345 is used to adjust the spacing between the two pre-press alignment cameras 344 so that the shooting light paths of the two pre-press alignment cameras 344 can pass through the light path detection holes 333 to take images of the two sides of the first chip or the FPC flexible board respectively. The pre-press alignment cameras 344 can be CCD vision cameras. The pre-press back support 34 is located between the adsorptive pre-press head 341 and the pre-press alignment cameras 344.

[0077] With reference to Figure 11 The pre-press feeding assembly 36 comprises a transfer platform 351 capable of moving in three dimensions at the lower half of the pre-press support 37, a feeding box 352 and a recycling box 353 arranged at the side edges of the pre-press support 37, and a feeding alignment camera 354 connected to the upper half of the pre-press support 37. The transfer platform 351 is loaded with a tray 355 for placing materials. The feeding box 352 is used to place the tray 355 loaded with materials. The recycling box 353 is used to recycle the tray 355 on the transfer platform 351 which has been emptied of materials. The feeding box 352 and the recycling box 353 are both provided with a baffle 356 capable of sliding to both sides at the bottom, so that the feeding box 352 can load the tray 355 from the bottom to the transfer platform 351, and the recycling box 353 can recycle the tray 355 on the transfer platform 351 which has been emptied of materials from the bottom. The feeding alignment camera 354 is used to take images of the materials on the transfer platform 351 for position correction, so that the pre-press material taking assembly 33 can accurately suck materials. The tray 355 can be loaded with multiple materials.

[0078] The implementation principle of the full-automatic FOG bonding machine according to an embodiment of the present application is as follows: the feeding machine arm 50 sucks the unattached workpiece 100 on the guide rail 11 to the attachment transfer platform 22, the attachment transfer platform 22 moves the unattached workpiece 100 to the attachment mechanism 20 and corrects the relative position of the unattached workpiece 100 and the attachment table 21. In the film segmented attachment table 21, a plurality of separated ACF films are attached to the surface of the unattached workpiece 100. The attachment transfer platform 22 unloads the attached workpiece 100. The first linkage transfer arm 60 sucks the attached but unpre-pressed workpiece 100 on the guide rail 11 to the pre-pressing transfer platform 32, the pre-pressing transfer platform 32 moves the unpre-pressed workpiece 100 to the pre-pressing mechanism 30 and corrects the relative position of the unpre-pressed workpiece 100 and the pre-pressing table 31. In the pre-pressing table 31, the FPC board is pre-pressed on the plurality of separated ACF films to temporarily join the FPC board and the workpiece 100. The second linkage transfer arm 70 sucks the pre-pressed but unpressing workpiece 100 on the guide rail 11 to the pressing transfer platform 42, the pressing transfer platform 42 moves the unpressing workpiece 100 to the pressing mechanism 40 and corrects the relative position of the unpressing workpiece 100 and the pressing table 41. In the pressing gap adjustable pressing table 41, the plurality of pressing heads with adjustable gap accurately press the plurality of separated ACF films under the FPC board to realize the permanent joining of the FPC board and the workpiece 100 in electrical connection. The discharging machine arm 80 sucks the workpiece 100 with the joined FPC board on the guide rail 11 and moves out of the installation platform 10 of the FOG bonding machine.

[0079] Referring Figure 1 The present application also provides a FOG bonding method based on the full-automatic FOG bonding machine according to any of the technical solutions described above, which comprises the following steps: S1, feeding by the feeding machine arm 50 on the guide rail 11, the attachment transfer platform 22 accesses the unattached workpiece 100 and transfers it to the attachment table 21, and a plurality of separated ACF films are attached to the surface of the workpiece 100 in the film segmented attachment table 21; S2, transfer by the first linkage transfer arm 60 on the guide rail 11, the pre-pressing transfer platform 32 accesses the unpre-pressed workpiece 100 and transfers it to the pre-pressing table 31, and the FPC board is pre-pressed on the plurality of separated ACF films in the pre-pressing table 31 to temporarily join the FPC board and the workpiece 100; S3, transfer by the second linkage transfer arm 70 on the guide rail 11, the pressing transfer platform 42 accesses the unpressing workpiece 100 and transfers it to the pressing table 41, and the plurality of separated ACF films under the FPC board are accurately pressed by the plurality of pressing heads with adjustable gap in the pressing gap adjustable pressing table 41 to realize the permanent joining of the FPC board and the workpiece 100 in electrical connection; S4, discharging by the discharging machine arm 80 on the guide rail 11, and the workpiece 100 with the joined FPC board moves out of the installation platform 10.

[0080] The first time that the first transfer arm 60 and the second transfer arm 70 move to the attachment reset point of the guide rail 11 includes the feeding work of the feeding machine arm 50 in step S, and the second time that the feeding machine arm 50 moves to the pre-pressing reset point of the guide rail 11 includes the transfer work of the first transfer arm 60 in step S and the second transfer arm 70 in step S.

[0081] The implementation principle of the FOG bonding method in the embodiment of the application is as follows: the attachment table 21 is a film segmented attachment table 21, which can attach multiple separated ACF films on the surface of the workpiece 100; the pre-pressing table 31 can pre-press the FPC board on the workpiece 100 to which the multiple separated ACF films are attached; the multiple pressure heads with adjustable gaps on the main pressing table 41 can precisely press the multiple separated ACF films under the FPC board, and the main pressing mechanism 40 can reduce the main pressing time and be close to the pre-pressing time, so that the attachment process, the pre-pressing process and the main pressing process can be simultaneously produced on the same machine.

[0082] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A fully automatic FOG bonder, characterized by, The application relates to a multi-station automatic assembly machine for assembling a workpiece, which comprises: an installation platform (10) provided with guide rails (11), wherein an upper feeding machine arm (50), a first linkage transfer arm (60), a second linkage transfer arm (70) and a lower feeding machine arm (80) are slidably arranged on the guide rails (11); an attaching mechanism (20) arranged on the installation platform (10), wherein the attaching mechanism (20) comprises a film segmented attaching table (21) for supplying an ACF film and an attaching transfer platform (22) for loading and unloading workpieces on the film segmented attaching table (21), and the upper feeding machine arm (50) supplies unattached workpieces to the attaching transfer platform (22); a pre-pressing mechanism (30) arranged on the installation platform (10), wherein the pre-pressing mechanism (30) comprises a pre-pressing table (31) for supplying an FPC board and a pre-pressing transfer platform (32) for loading and unloading workpieces on the pre-pressing table (31), and the first linkage transfer arm (60) supplies unpre-pressed workpieces to the pre-pressing transfer platform (32) by the attaching transfer platform (22); a pressing mechanism (40) arranged on the installation platform (10), wherein the pressing mechanism (40) comprises a pressing gap adjustable pressing table (41) and a pressing transfer platform (42) for loading and unloading workpieces on the pressing gap adjustable pressing table (41), and the second linkage transfer arm (70) supplies unpressed workpieces to the pressing transfer platform (42) by the pre-pressing transfer platform (32); and the lower feeding machine arm (80) feeds out by the pressing transfer platform (42); wherein when the upper feeding machine arm (50) supplies unattached workpieces to the attaching transfer platform (22), the first linkage transfer arm (60) and the second linkage transfer arm (70) are located at an attaching reset point of the guide rails (11); when the first linkage transfer arm (60) and the second linkage transfer arm (70) individually and simultaneously supply unpre-pressed workpieces to the pre-pressing transfer platform (32) and supply unpressed workpieces to the pressing transfer platform (42), the upper feeding machine arm (50) is located at a pre-pressing and pressing reset point of the guide rails (11); a plurality of X-direction movable pressing units (43) are arranged on the pressing table (41), a through type long slot for the pressing units (43) to pass through, and a visual detection positioner (44) are arranged on the pressing table (41), the visual detection positioner (44) is used for detecting the position of a workpiece on the pressing transfer platform (42), so that the pressing transfer platform (42) corrects the workpiece.

2. The fully automatic FOG bonder of claim 1, wherein, an upper feeding suction nozzle (51) is arranged on the upper feeding machine arm (50), a first transfer suction nozzle (61) is arranged on the first linkage transfer arm (60), a second transfer suction nozzle (71) is arranged on the second linkage transfer arm (70), and a lower feeding suction nozzle (81) is arranged on the lower feeding machine arm (80).

3. The fully automatic FOG bonder of claim 1, wherein, The first linkage transfer arm (60) and the second linkage transfer arm (70) are fixedly connected.

4. The fully automatic FOG bonder of claim 1, wherein, The attaching mechanism (20), the pre-pressing mechanism (30) and the pressing mechanism (40) are each provided with two groups.

5. The fully automatic FOG bonder of claim 1, wherein, The attaching transfer platform (22), the pre-pressing transfer platform (32) and the pressing transfer platform (42) can drive the workpiece to move three-dimensionally on the mounting platform (10).

6. The fully automatic FOG bonder of claim 1, wherein, The pressing head (431), the heater (432), the heat sink (433), the pressing cylinder (434), the telescopic rod (435) and the pressing driving motor (436) are sequentially arranged on the pressing body (43).

7. The fully automatic FOG bonder of claim 6, wherein, The heater (432) has an opening, and the pressing head (431) is embedded in the opening to increase the contact area between the pressing head (431) and the heater (432).

8. A FOG bonding method, characterized by, The FOG bonding method comprises: S1, attaching a plurality of separated ACF films on the surface of the workpiece in the film segmented attaching table (21) through the feeding of the feeding machine arm (50) on the guide rail (11); S2, pre-pressing the FPC board on the plurality of separated ACF films in the pre-pressing table (31) through the first linkage transfer arm (60) on the guide rail (11) to temporarily joint the FPC board and the workpiece; S3, precisely pressing the plurality of separated ACF films under the FPC board in the gap-adjustable multi-pressing-head pressing table (41) through the second linkage transfer arm (70) on the guide rail (11), so as to realize the permanent joint of the electrical connection between the FPC board and the workpiece; S4, discharging the workpiece jointed with the FPC board from the mounting platform (10) through the discharging of the discharging machine arm (80) on the guide rail (11); The first time for the first linkage transfer arm (60) and the second linkage transfer arm (70) to move to the attaching reset point of the guide rail (11) includes the feeding work of the feeding machine arm (50) in step S1, and the second time for the feeding machine arm (50) to move to the pre-pressing and pressing reset point of the guide rail (11) includes the transfer work of the first linkage transfer arm (60) in step S2 and the second linkage transfer arm (70) in step S3.

9. The FOG bonding method of claim 8, wherein, In step S1, the attaching table (21) is loaded with an unattached workpiece by the attaching transfer platform (22); in step S2, the pre-pressing table (31) is loaded with an unpre-pressed workpiece by the pre-pressing transfer platform (32); and in step S3, the pressing table (41) is loaded with an unpressed workpiece by the pressing transfer platform (42).

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