A cof cleaning apparatus

Abstract

The application provides a COF cleaning device, which comprises a COF bearing seat, a point solvent device, a wiping device, an inspection device and a discharging device. The COF bearing seat comprises a rotating device and a rotating disc, at least one bearing position is arranged on the rotating disc, and the rotating device drives the rotating disc to rotate by an angle β each time. A device working area is arranged around the circumferential area of the COF bearing seat, the point solvent device, the wiping device, the inspection device and the discharging device are sequentially distributed in the device working area around the circumference of the COF bearing seat, and the included angle between the adjacent devices and the center line of the rotating disc is β. After the bearing position is rotated to the device working area by the rotating disc, each bearing position sequentially rotates and sequentially corresponds to the position of the device in the working area. The point solvent device is used for dropping solvent to the COF in the form of drops. The wiping device is used for wiping the COF by using a dust-free cloth belt. The inspection device is used for checking whether the COF is clean and qualified. The discharging device is used for sorting and discharging the clean and qualified COF or the unqualified COF. The application realizes the automatic cleaning of the COF, guarantees the cleaning quality and improves the product quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of COF cleaning, in particular to a COF cleaning device. BACKGROUND

[0002] COF, commonly known as chip on film, is a chip soft film packaging technology for fixing integrated circuits (IC) on flexible circuit boards. It uses a soft additional circuit board as a chip packaging carrier to combine the chip with the soft substrate circuit, or refers to a soft additional circuit board without packaging chips.

[0003] The COF is provided with conductive pads for electrical signal transmission. All conductive pads are gold-plated on the surface and arranged like fingers, so the conductive pads of the COF are also called "gold fingers". The COF needs to be bonded with the substrate later, and the process of bonding the COF is called "bonding COF". Before bonding the COF, the gold fingers on the COF are generally cleaned to prevent foreign matter, dust, residual glue, etc. on the COF gold fingers, so as to avoid affecting the subsequent electrical signal transmission, bonding stability, etc.

[0004] In the prior art, when cleaning the position of the COF gold fingers, the operator needs to use a cotton swab to dip cleaning solvent, and then wipe and clean in a direction parallel to the gold fingers. After cleaning is completed, the operator transports it to the next process position, and manually checks whether the surface of the COF gold fingers is clean. Only when it is confirmed that the cleaning is clean can the COF be bonded. If it is not clean, it needs to be returned to the previous step for repeated cotton swab cleaning.

[0005] The COF cleaning method of the foregoing prior art, the cleaning process and the process of checking and judging whether the cleaning is clean, are basically in a pure manual manner, so that the cleaning standard each time relies on manual self-grasping, which may cause different cleaning degrees of different COFs, and cannot effectively unify the cleaning standard. At the same time, when checking and judging whether the COF gold fingers are clean, manual self-checking may miss detection, which may cause unqualified COFs to be integrated into products, resulting in quality accidents of subsequent products. In addition, the pure manual cleaning and checking method also has the problems of low efficiency and high labor cost. SUMMARY

[0006] The purpose of the embodiments of the present application is to provide a COF cleaning device, which realizes automatic cleaning of the COF, improves the cleaning quality, and can guarantee the quality of subsequent products.

[0007] The application provides a COF cleaning device, which comprises a COF bearing seat, a point solvent device, a wiping device, an inspection device and a discharging device. The COF bearing seat comprises a rotating device and a rotating disc mounted on the rotating device, at least one bearing position is arranged on the upper surface of the rotating disc, each bearing position is used for bearing a COF, and the rotating disc is driven by the rotating device to rotate by a fixed angle β each time. A device work station area is arranged around the circumferential area of the COF bearing seat; the point solvent device, the wiping device, the inspection device and the discharging device are sequentially distributed in the device work station area around the circumference of the COF bearing seat, and the included angle between two adjacent devices in the point solvent device, the wiping device, the inspection device and the discharging device to the center line of the rotating disc is equal to the fixed angle β. The rotating disc is rotated so that each bearing position is sequentially rotated to correspond to the positions of the point solvent device, the wiping device, the inspection device and the discharging device in sequence after rotating to the device work station area. The point solvent device is used for dropping cleaning solvent in the form of drops to the COF on the bearing position. The wiping device comprises a belt wheel device and a dust-free cloth belt rotating with the belt wheel device, and the belt wheel device drives the dust-free cloth belt to wipe the COF on the bearing position. The inspection device is signal connected with the discharging device; the inspection device is used for checking the cleaning condition of the COF on the bearing position, obtaining a qualified signal or an unqualified signal, and sending the signal to the discharging device; and the discharging device is used for sorting and discharging the COF rotated from the position of the inspection device according to the received qualified signal or unqualified signal.

[0008] In an implementable scheme, the point solvent device comprises a base, a space displacement assembly, a suction device, a solvent tank and a liquid outlet needle. The base is mounted in the device work station area beside the COF bearing seat; the space displacement assembly is mounted on the base; the suction device is mounted on the space displacement assembly and comprises a suction port and a discharge port; the solvent tank is detachably mounted on the space displacement assembly, and the opening of the solvent tank is connected to the suction port of the suction device; and the liquid outlet needle is detachably connected to the discharge port of the suction device, and the liquid outlet direction of the liquid outlet needle is vertically downward; wherein the suction device works to make the cleaning solvent in the solvent tank discharged from the liquid outlet needle in the form of drops.

[0009] In an implementable scheme, the suction device comprises a suction pump and a suction head connected with the suction pump, the suction pump is mounted on the space displacement assembly, and the opening of the solvent tank is connected to the suction head in a pluggable connection mode.

[0010] In an implementable scheme, a mounting rack is mounted on the space displacement assembly, and a through cylindrical structure is arranged on the mounting rack; the mounting rack is mounted on the space displacement assembly in a posture that the cylindrical structure is vertically placed, the suction device is mounted on the mounting rack and the suction head faces the lower end opening of the cylindrical structure; and the solvent tank is inserted into the cylindrical structure from top to bottom to make the opening of the solvent tank plugged with the suction head.

[0011] In an embodiment, the needle support is installed on the mounting rack, and includes a vertical member and a horizontal member; the vertical member is vertically installed on the mounting rack, and the first end of the horizontal member is fixedly connected to the lower end of the vertical member; the second end of the horizontal member extends horizontally to the position of the liquid outlet needle, and the horizontal member is provided with a vertical through hole facing the liquid outlet direction of the liquid outlet needle; the liquid outlet needle passes through the through hole from top to bottom.

[0012] In an embodiment, the point solvent device further includes a needle cleaning structure, which includes an extension frame and a flexible cleaning part; one end of the extension frame is fixedly connected to the base, and the other end is installed with the flexible cleaning part; the space displacement assembly drives the liquid outlet needle of the extraction device to approach the flexible cleaning part, and makes the liquid outlet needle rub on the flexible cleaning part.

[0013] In an embodiment, the wiping device further includes a base plate, which is vertically arranged in the equipment workstation area beside the COF bearing seat, and is located at the next workstation of the workstation where the point solvent device is located; the belt wheel device of the wiping device includes a driving belt wheel and a driven belt wheel; the driving belt wheel is rotatably installed on the base plate, and the driving device for driving the driving belt wheel to rotate is installed on the base plate; the driven belt wheel is rotatably installed on the base plate and above the driving belt wheel, and the rotation axis of the driven belt wheel is parallel to the driving belt wheel; the wiping device further includes a wiping assembly, which is installed on the base plate; the wiping assembly includes a wiping head and a redirecting roller; the wiping head has a wiping surface facing downward; the redirecting roller is arranged beside the wiping head, and the axis of the redirecting roller is parallel to the driving belt wheel; wherein the lint-free cloth belt includes a first end and a second end; the first end is wound on the driven belt wheel; the second end of the lint-free cloth belt passes through the wiping surface of the wiping head, is wound on the redirecting roller, and is then wound on the driving belt wheel; the redirecting roller redirects the lint-free cloth belt and makes the surface of the lint-free cloth belt adhere to the wiping surface.

[0014] In an embodiment, the wiping head is provided with a liquid outlet hole penetrating from top to bottom to the wiping surface; the upper end of the liquid outlet hole is connected to the liquid outlet assembly; the liquid outlet assembly includes a solution tank and a solution pump; one end of the solution pump is connected to the solution tank, and the other end of the solution pump is connected to the upper end of the liquid outlet hole.

[0015] In an embodiment, the wiping assembly further includes a frame plate and a displacement assembly; the wiping head is installed on the frame plate with the wiping surface facing downward; the redirecting roller is also installed on the frame plate; the displacement assembly includes an up-down displacement module and a front-rear displacement module; the displacement direction of the front-rear displacement module is parallel to the surface of the base plate and perpendicular to the displacement direction of the up-down displacement module; the frame plate is installed on the displacement assembly.

[0016] In an embodiment, the wiping device further includes a tensioning assembly, which is installed on the base plate and used to abut against the predetermined position between the first end and the second end of the lint-free cloth belt to adjust the tightness of the transmission of the lint-free cloth belt.

[0017] In an implementable solution, the wiping device further comprises a distance measuring device for detecting the length of the cloth tape pulled by the driving pulley; the distance measuring device comprises a distance measuring roller and an encoder, the distance measuring roller is rotatably installed on the base plate, and the rotation axis of the distance measuring roller is parallel to the rotation axis of the driving pulley; the encoder is installed on the base plate and connected with one end of the distance measuring roller; the cloth tape is wound around the distance measuring roller at a predetermined position between the first end and the second end of the cloth tape.

[0018] In an implementable solution, the inspection device comprises a rack, an inspection camera and an inspection controller; the rack is arranged in the equipment work station area beside the COF carrier, and is located at the next work station of the work station where the wiping device is located; the inspection camera is installed on the rack and faces the upper surface of the COF carrier; the inspection controller is electrically connected with the inspection camera, and is used for controlling the inspection camera to take pictures of the cleaned COF below; the inspection controller is further used for comparing the cleaned COF picture with a pre-stored standard cleaned COF picture in terms of feature parameters, calculating whether the cleaned COF picture is appropriate, and generating a qualified signal or an unqualified signal and sending the signal to the unloading device.

[0019] In an implementable solution, the unloading device comprises a sorting device and a conveying belt assembly; the sorting device is arranged in the equipment work station area beside the COF carrier, and is located at the next work station of the work station where the inspection device is located; the conveying belt assembly is arranged beside the sorting device, and the conveying belt assembly comprises a qualified product conveying belt and an unqualified product conveying belt; the sorting device is used for adsorbing or clamping the COF and placing the COF on the corresponding qualified product conveying belt and unqualified product conveying belt.

[0020] Compared with the prior art, the application has at least the following beneficial effects:

[0021] (1) The COF cleaning device of the present application is used, and the COF to be cleaned is installed on the bearing position. First, the rotating device works to rotate the COF on the bearing position to the point solvent device, and the point solvent device drops the cleaning solution on the COF. Then, the rotating device continues to work to rotate the COF on the bearing position which has been added with the solvent to the wiping device, and the belt wheel device of the wiping device automatically drives the dust-free cloth belt to wipe the COF on the bearing position. Next, the rotating device continues to work to rotate the COF on the bearing position which has been added with the solvent and wiped to the inspection device for inspection, and to judge whether it is clean and qualified. Finally, the discharging device selects and discharges the COF which is clean and qualified and the COF which is not clean and qualified. As can be seen from the above, the COF cleaning device of the present application can basically automatically complete the cleaning work of the COF, improve the cleaning efficiency, and save the labor cost. At the same time, because the steps of adding the solvent and wiping are automatically completed, the cleaning steps and cleaning degree can be unified, and compared with manual work, the cleaning process is more controllable. In addition, for the cleaned COF, the automatic inspection is completed by the inspection device, which is beneficial to unify the cleaning standard, reduce the missed inspection, and is beneficial to ensure the inspection accuracy of the cleaned COF.

[0022] (2) In a further scheme, the point solvent device of the present application works, the rotating device works to rotate the COF on the bearing position to the point solvent device, then the space displacement assembly acts to drive the liquid outlet needle to be aligned with the upper surface of the COF, then the suction device works to extract the cleaning solvent from the solvent tank, and the solvent is discharged from the liquid outlet needle in the form of drops and drops on the COF, thereby completing the operation of automatically adding the cleaning solvent on the COF. As can be seen from the above, the operation of adding the cleaning solvent on the COF to be cleaned can be automatically completed, realizing the automatic control of the liquid drop and the drop amount. At the same time, the manual use of cotton swab to repeatedly dip the solvent is not needed, and the secondary pollution to the original cleaning solution is reduced.

[0023] (3) In a further scheme, the wiping device of the present application rotates the COF on the carrying position to the wiping device under the action of the rotating device during operation, and the dust-free cloth tape is attached to the wiping surface of the wiping head under the action of the redirection roller, then the driving device drives the driving pulley to rotate, and the dust-free cloth tape wound on the driven pulley is pulled out and wound on the driving pulley. The dust-free cloth tape will pass through the redirection roller and attach to the wiping surface of the wiping head during the rotation and pulling process, and the dust-free cloth tape passing through the wiping surface will wipe the surface of the COF, thereby realizing the cleaning of the COF. As can be seen from the above, the wiping device of the present application replaces the cotton swab wiping with the wiping of the dust-free cloth tape, and the wiping area is larger and more thorough. The dust-free cloth tape is driven by the driving pulley to rotate in one direction, and the used part of the dust-free cloth tape will not reciprocate to wipe the COF, thereby eliminating the secondary pollution of the used dust-free cloth tape to the COF. At the same time, when wiping with the dust-free cloth tape, only the number of rotations of the driving pulley needs to be controlled, and then the length of the dust-free cloth tape pulled can be controlled, and the length of the dust-free cloth tape 31 required for wiping the COF can be controlled, thereby realizing the standardization of the wiping and cleaning action, which is more reliable than the wiping of the cotton swab. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0025] Figure 1 It is a top view of a COF cleaning device according to an embodiment of the present application.

[0026] Figure 2 It is a perspective view of a COF cleaning device according to an embodiment of the present application.

[0027] Figure 3 It is a first perspective view of a point solvent device of a COF cleaning device according to an embodiment of the present application.

[0028] Figure 4 It is a second perspective view of a point solvent device of a COF cleaning device according to an embodiment of the present application.

[0029] Figure 5 It is Figure 3 It is a local enlarged view of A in FIG. 6;

[0030] Figure 6 It is a top view of a needle cleaning structure of a point solvent device according to an embodiment of the present application.

[0031] Figure 7A front side perspective view of a wiping device according to the COF cleaning apparatus shown in the embodiments of the present application;

[0032] Figure 8 A front view of the wiping device according to the embodiments of the present application;

[0033] Figure 9 A back side perspective view of the wiping device according to the embodiments of the present application;

[0034] Figure 10 A bottom perspective view of the wiping device according to the embodiments of the present application;

[0035] Figure 11 A Figure 10 A partial enlarged view at B in the middle.

[0036] Fig. 10 is a schematic view of a COF cleaning apparatus according to the embodiments of the present application; Fig. 11 is a schematic view of a rotating device according to the embodiments of the present application; Fig. 12 is a schematic view of a rotating disc according to the embodiments of the present application; Fig. 13 is a schematic view of a bearing position according to the embodiments of the present application; Fig. 14 is a schematic view of a point solvent device according to the embodiments of the present application; Fig. 15 is a schematic view of a base according to the embodiments of the present application; Fig. 16 is a schematic view of a space displacement assembly according to the embodiments of the present application; Fig. 17 is a schematic view of an x-direction displacement module according to the embodiments of the present application; Fig. 18 is a schematic view of a y-direction displacement module according to the embodiments of the present application; Fig. 19 is a schematic view of a z-direction displacement module according to the embodiments of the present application; Fig. 20 is a schematic view of a suction device according to the embodiments of the present application; Fig. 21 is a schematic view of a suction pump according to the embodiments of the present application; Fig. 22 is a schematic view of a suction head according to the embodiments of the present application; Fig. 23 is a schematic view of a solvent tank according to the embodiments of the present application; Fig. 24 is a schematic view of a liquid outlet needle according to the embodiments of the present application; Fig. 25 is a schematic view of a mounting rack according to the embodiments of the present application; Fig. 26 is a schematic view of a needle cleaning structure according to the embodiments of the present application; Fig. 27 is a schematic view of an extension frame according to the embodiments of the present application; Fig. 28 is a schematic view of a flexible cleaning part according to the embodiments of the present application; Fig. 29 is a schematic view of a wiping device according to the embodiments of the present application; Fig. 30 is a schematic view of a dust-free cloth belt according to the embodiments of the present application; Fig. 31 is a schematic view of a base plate according to the embodiments of the present application; Fig. 32 is a schematic view of a driving belt wheel according to the embodiments of the present application; Fig. 33 is a schematic view of a driving device according to the embodiments of the present application; Fig. 34 is a schematic view of a driven belt wheel according to the embodiments of the present application; Fig. 35 is a schematic view of a wiping assembly according to the embodiments of the present application; Fig. 36 is a schematic view of a wiping head according to the embodiments of the present application; Fig. 37 is a schematic view of a redirection roller according to the embodiments of the present application; Fig. 38 is a schematic view of a frame plate according to the embodiments of the present application; Fig. 39 is a schematic view of a displacement assembly according to the embodiments of the present application; Fig. 40 is a schematic view of an up-down displacement module according to the embodiments of the present application; Fig. 41 is a schematic view of a front-back displacement module according to the embodiments of the present application; Fig. 42 is a schematic view of a tensioning assembly according to the embodiments of the present application; Fig. 43 is a schematic view of a movable rod according to the embodiments of the present application; Fig. 44 is a schematic view of a fixed block according to the embodiments of the present application; Fig. 45 is a schematic view of a tensioning roller according to the embodiments of the present application; Fig. 46 is a schematic view of a spring according to the embodiments of the present application; Fig. 47 is a schematic view of a distance measuring device according to the embodiments of the present application; Fig. 48 is a schematic view of a distance measuring roller according to the embodiments of the present application; Fig. 49 is a schematic view of an encoder according to the embodiments of the present application; Fig. 50 is a schematic view of a pressing device according to the embodiments of the present application; Fig. 51 is a schematic view of a pushing structure according to the embodiments of the present application; Fig. 52 is a schematic view of a pressing roller according to the embodiments of the present application; Fig. 53 is a schematic view of an inspection device according to the embodiments of the present application; Fig. 54 is a schematic view of a machine frame according to the embodiments of the present application; Fig. 55 is a schematic view of an inspection camera according to the embodiments of the present application; Fig. 56 is a schematic view of a blanking device according to the embodiments of the present application; Fig. 57 is a schematic view of a sorting device according to the embodiments of the present application; Fig. 58 is a schematic view of a conveyor belt assembly according to the embodiments of the present application; Fig. 59 is a schematic view of a qualified product conveyor belt according to the embodiments of the present application; Fig. 60 is a schematic view of an unqualified product conveyor belt according to the embodiments of the present application. DETAILED DESCRIPTION

[0037] In order to make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings in the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0039] As shown in Figure 1 and Figure 2 The present embodiment provides a COF cleaning device, which comprises a COF bearing seat 10, a point solvent device 20, a wiping device 30, an inspection device 40, and a discharging device 50. The COF bearing seat 10 comprises a rotating device 11 and a rotating disc 12 mounted on the rotating device 11, at least one bearing position 101 is arranged on the upper surface of the rotating disc 12, each bearing position 101 can be used to bear a COF, and the rotating device 11 drives the rotating disc 12 to rotate by a fixed angle β each time.

[0040] A device station area is arranged around the circumferential area of the COF bearing seat 10; the point solvent device 20, the wiping device 30, the inspection device 40, and the discharging device 50 are sequentially distributed in the device station area around the circumferential area of the COF bearing seat 10, and the included angle between any two adjacent devices in the point solvent device 20, the wiping device 30, the inspection device 40, and the discharging device 50 to the center line of the rotating disc 12 is equal to the fixed angle β. The rotation of the rotating disc 12 makes each bearing position 101 rotate to the device station area, and each bearing position 101 sequentially rotates to sequentially correspond to the positions of the point solvent device 20, the wiping device 30, the inspection device 40, and the discharging device 50.

[0041] The point solvent device 20 is used to drop cleaning solvent in the form of drops to the COF on the bearing position 101. The wiping device 30 comprises a belt wheel device and a dust-free cloth belt 31 rotating with the belt wheel device, and the belt wheel device drives the dust-free cloth belt 31 to wipe the COF on the bearing position 101. The inspection device 40 is signal connected with the discharging device 50; the inspection device 40 is used to inspect the cleaning condition of the COF on the bearing position 101, obtain a qualified signal or an unqualified signal, and send the signal to the discharging device 50; and the discharging device 50 is used to sort and discharge the COF rotated from the position of the inspection device 40 according to the received qualified signal or unqualified signal.

[0042] In use of the COF cleaning device of the embodiment, the COF to be cleaned is installed on the bearing position 101. First, the rotating device 11 works to rotate the COF on the bearing position 101 to the spot solvent device 20, and the spot solvent device 20 drops the cleaning solution onto the COF. Then, the rotating device 11 continues to work to rotate the COF on the bearing position 101 after being spotted with the solvent to the wiping device 30, and the belt wheel device of the wiping device 30 automatically drives the dust-free cloth belt 31 to wipe the COF on the bearing position 101. Next, the rotating device 11 continues to work to rotate the COF on the bearing position 101 after being spotted with the solvent and wiped to the inspection device 40 for inspection and judgment of whether the cleaning is qualified. Finally, the discharging device 50 discharges the cleaned COF and the uncleaned COF respectively. As can be seen, the COF cleaning device of the application can basically automatically complete the cleaning of the COF, improve the cleaning efficiency, and save labor cost. At the same time, because the steps of spotting the solvent and wiping are automatically completed, the cleaning steps and cleaning degree can be unified, and the cleaning process is more controllable compared with manual cleaning. In addition, the cleaned COF is automatically inspected by the inspection device 40, which is conducive to unifying the cleaning standard, reducing the missed inspection, and ensuring the inspection accuracy of the cleaned COF.

[0043] In the embodiment, as shown in Figure 3 and Figure 4 , the spot solvent device 20 includes a base 21, a space displacement assembly 22, a suction device 23, a solvent tank 24, and a liquid outlet needle 25. The base 21 is installed in the equipment station area beside the COF bearing seat 10, and the space displacement assembly 22 is installed on the base 21. The suction device 23 is installed on the space displacement assembly 22 and includes a suction port and a discharge port. The solvent tank 24 is detachably installed on the space displacement assembly 22, and the opening of the solvent tank 24 is connected to the suction port of the suction device 23. The liquid outlet needle 25 is detachably connected to the discharge port of the suction device 23, and the liquid outlet direction of the liquid outlet needle 25 is vertically downward. The suction device 23 works to make the cleaning solvent in the solvent tank 24 drop from the liquid outlet needle 25 in the form of drops.

[0044] In use of the spot solvent device 20 of the embodiment, the rotating device 11 works to rotate the COF on the bearing position 101 to the spot solvent device 20, then the space displacement assembly 22 moves to align the liquid outlet needle 25 with the upper surface of the COF, then the suction device 23 works to extract the cleaning solvent from the solvent tank 24 and make the solvent drop from the liquid outlet needle 25 in the form of drops and drop onto the COF, thereby completing the operation of automatically adding the cleaning solvent to the COF. As can be seen, the operation of dropping the cleaning solvent on the COF to be cleaned can be automatically completed, realizing the automatic control of the liquid drop and the drop amount. At the same time, the manual use of the cotton swab to repeatedly dip the solvent is not needed, reducing the secondary pollution of the original cleaning solution.

[0045] In the embodiment, as shown in Figure 3 and Figure 4 , the extraction device 23 comprises a suction pump 231 and a suction head 232 connected with the suction pump 231, the suction pump 231 is installed on the space displacement assembly 22, and the opening of the solvent tank 24 is connected with the suction head 232 in a plug-in manner. Thus, after the solution in the solvent tank 24 is used up, the solvent tank 24 can be conveniently replaced. The suction pump 231 is preferably a peristaltic pump, which can effectively isolate the pump body from direct contact with the solvent, thereby reducing the pollution probability during solution delivery. At the same time, the peristaltic pump is more likely to realize the form of dropwise delivery, and the dropwise amount is easier to control.

[0046] In the embodiment, as shown in Figure 3 and Figure 4 , a mounting rack 26 is installed on the space displacement assembly 22, and a through cylindrical structure 261 is arranged on the mounting rack 26. The mounting rack 26 is installed on the space displacement assembly 22 in a posture that the cylindrical structure 261 is vertically placed, and the extraction device 23 is installed on the mounting rack 26 and the suction head 232 faces the lower end opening of the cylindrical structure 261; the solvent tank 24 is inserted into the cylindrical structure 261 from top to bottom, so that the opening of the solvent tank 24 is plugged with the suction head 232.

[0047] In the embodiment, as shown in Figure 4 and Figure 5 , a needle holder 262 is installed on the mounting rack 26, and the needle holder 262 comprises a vertical part 2621 and a horizontal part 2622. The needle holder 262 can keep the vertical state of the delivery needle 25, so as to ensure the drop direction of the liquid drops of the delivery needle 25. Specifically, the vertical part 2621 is vertically installed on the mounting rack 26, the first end of the horizontal part 2622 is fixedly connected with the lower end of the vertical part 2621, the second end of the horizontal part 2622 extends horizontally to the position of the delivery needle 25, and the horizontal part 2622 is provided with a vertical through hole 2623 opposite to the delivery direction of the delivery needle 25, and the delivery needle 25 passes through the through hole 2623 from top to bottom.

[0048] In the embodiment, as shown in Figure 5 , a groove 2624 vertically extending for a predetermined length is arranged at the lower end of the vertical part 2621, and the first end of the horizontal part 2622 is installed in the groove 2624 in a slidable and fixed manner. Thus, for the delivery needle 25 of different lengths, the position of the delivery needle 25 can be adjusted by adjusting the position of the first end of the horizontal part 2622 in the groove 2624.

[0049] In the embodiment, as shown in Figure 3 , Figure 4 and Figure 6As shown, the point solvent device 20 further comprises a needle cleaning structure 27, which comprises an extension frame 271 and a flexible cleaning part 272; one end of the extension frame 271 is fixedly connected with the base 21, and the other end is installed with the flexible cleaning part 272; the space displacement assembly 22 drives the liquid outlet needle 25 of the extraction device 23 to approach the flexible cleaning part 272, and makes the liquid outlet needle 25 rub on the flexible cleaning part 272 to clean the liquid outlet needle 25, which can clean dust and prevent blockage.

[0050] In the embodiment, as shown in Figure 6 , the flexible cleaning part 272 comprises a horizontally oriented V-shaped opening 2721 and a cleaning sponge 2722 attached to the vertical surface of the V-shaped opening 2721. The V-shaped opening 2721 comprises an opening part 7211, a middle part 7212 and an inner side part 7213, which are connected smoothly without sharp corners; from the outermost side of the opening part 7211 to the position of the middle part 7212, the opening size gradually decreases; the opening size of the middle part 7212 is smaller than that of the inner side part 7213. After the cleaning sponge 2722 is attached to the vertical surface of the V-shaped opening 2721, a shape similar to the V-shaped opening 2721 is formed, so that the liquid outlet needle 25 can be effectively cleaned by the cleaning sponge 2722 with a relatively narrow middle part 7212 during the process of entering the middle part 7212 from the opening part 7211 and entering the middle part 7212 from the inner side part 7213, thereby ensuring the cleaning effect.

[0051] In the embodiment, as shown in Figure 4 , the space displacement assembly 22 comprises an x-direction displacement module 221, a y-direction displacement module 222 and a z-direction displacement module 223 combinedly installed, which realizes three-dimensional orientation adjustment to make the liquid outlet needle 25 better align with the COF to be cleaned.

[0052] Further, in the embodiment, as shown in Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, the wiping device 30 comprises a lint-free cloth belt 31, a base plate 32, a driving pulley 33, a driven pulley 34 and a wiping assembly 35. The base plate 32 is vertically arranged in the equipment work station area beside the COF carrier 10, and is located at the next work station of the work station where the spot solvent device 20 is located. The pulley device of the wiping device 30 comprises the driving pulley 33 and the driven pulley 34, the driving pulley 33 is rotatably mounted on the base plate 32, and a driving device 331 for driving the driving pulley 33 to rotate is mounted on the base plate 32; the driven pulley 34 is rotatably mounted on the base plate 32 and located above the driving pulley 33, and the rotation axis of the driven pulley 34 is parallel to the driving pulley 33. The wiping device 30 further comprises the wiping assembly 35 mounted on the base plate 32, the wiping assembly 35 comprises a wiping head 351 having a wiping surface facing downward and a redirecting roller 352 located beside the wiping head 351 and having an axis parallel to the driving pulley 33. The lint-free cloth belt 31 comprises a first end and a second end, the first end is wound around the driven pulley 34; the second end of the lint-free cloth belt 31 is wound around the redirecting roller 352 after passing through the wiping surface of the wiping head 351, and then is wound around the driving pulley 33; the redirecting roller 352 redirects the lint-free cloth belt 31 and makes the surface of the lint-free cloth belt 31 adhere to the wiping surface.

[0053] In operation, the wiping device 30 of the present embodiment rotates the COF on the carrier 101 to the wiping device 30 by the rotating device 11, and the lint-free cloth belt 31 adheres to the wiping surface of the wiping head 351 under the action of the redirecting roller 352. Then the driving device 331 drives the driving pulley 33 to rotate, and the lint-free cloth belt 31 wound around the driven pulley 34 is pulled out and wound around the driving pulley 33. In the process of pulling and rotating, the lint-free cloth belt 31 passes through the redirecting roller 352 and adheres to the wiping surface of the wiping head 351. The lint-free cloth belt 31 passing through the wiping surface wipes the surface of the gold finger of the COF, thereby cleaning the COF. As can be seen from the above, the wiping device 30 of the present application uses the lint-free cloth belt 31 to replace the cotton swab for wiping, and the wiping area is larger and more thorough. In addition, the driving pulley 33 drives the lint-free cloth belt 31 to rotate in one direction, and the part of the lint-free cloth belt 31 after wiping does not reciprocally wipe the COF, thereby eliminating the secondary pollution of the lint-free cloth belt 31 to the COF after use. At the same time, when using the lint-free cloth belt 31 to wipe, only the number of rotations of the driving pulley 33 needs to be controlled, and then the length of the lint-free cloth belt 31 that is pulled can be controlled, and the length of the lint-free cloth belt 31 required for wiping the COF can be controlled, thereby realizing the standardized wiping and cleaning action, which is more reliable than the wiping of the cotton swab.

[0054] It should be noted that the extension direction of the conductive contact patch of the COF carried by the COF carrier 10 is preferably parallel to the advancing direction of the lint-free cloth belt 31 on the wiping surface of the wiping head 351, so as to prevent the wiping of the lint-free cloth belt 31 from damaging the conductive contact patch of the COF.

[0055] In the embodiment, as shown in Figure 11 The wiping head 351 is provided with a liquid outlet hole 3511 penetrating through the wiping surface from top to bottom, and the upper end of the liquid outlet hole 3511 is connected to a liquid outlet assembly. The liquid outlet assembly includes a solution tank and a solution pump, one end of the solution pump is connected to the solution tank, and the other end of the solution pump is connected to the upper end of the liquid outlet hole 3511. The solution tank generally contains alcohol solution. The cooperation of the liquid outlet hole 3511 and the liquid outlet assembly can realize the step of automatically adding cleaning solution while wiping, save steps, reduce operation difficulty, and improve the convenience of wiping and cleaning.

[0056] In the embodiment, as shown in Figure 7 The wiping assembly 35 further includes a frame plate 353 and a displacement assembly 354, the wiping head 351 is installed on the frame plate 353 in a manner that the wiping surface faces downward, and the redirection roller 352 is also installed on the frame plate 353; the displacement assembly 354 includes an up-down displacement module 3541 and a front-rear displacement module 3542, the displacement direction of the front-rear displacement module 3542 is parallel to the surface of the base plate 32 and perpendicular to the displacement direction of the up-down displacement module 3541; the frame plate 353 is installed on the displacement assembly 354. The front-rear displacement module 3542 is convenient for adjusting the distance between the wiping surface of the wiping head 351 and the COF in the horizontal direction, and the up-down displacement module 3541 is convenient for adjusting the distance between the wiping surface of the wiping head 351 and the COF in the vertical direction, so that the lint-free cloth tape 31 attached to the wiping surface of the wiping head 351 better fits the gold finger of the COF.

[0057] In the embodiment, as shown in Figure 7 The wiping device 30 further includes a tensioning assembly 36 installed on the base plate 32, which is used to abut against a predetermined position between the first end and the second end of the lint-free cloth tape 31 to adjust the tightness of the transmission of the lint-free cloth tape 31.

[0058] In the embodiment, as shown in Figure 8 The tensioning assembly 36 includes a movable rod 361 and a fixed block 362. The first end of the movable rod 361 is rotatably connected to the base plate 32, so that the movable rod 361 can rotate in a plane parallel to the surface of the base plate 32; the second end of the movable rod 361 is rotatably installed with a tensioning roller 363, and the rotation axis of the tensioning roller 363 is parallel to the rotation axis of the driving pulley 33. The fixed block 362 is installed on the base plate 32, one end of a spring 364 is connected to the fixed block 362, and the other end of the spring 364 is connected to the movable rod 361 and close to one side of the tensioning roller 363, and the spring 364 gives the fixed block 362 and the movable rod 361 a force away from each other. The predetermined position between the first end and the second end of the lint-free cloth tape 31 is wound around the tensioning roller 363. Further, the tensioning roller 363 is installed on the second end of the movable rod 361 in a manner that it is slidable and fixed on the second end of the movable rod 361.

[0059] In the embodiment, as shown in Figure 7 , Figure 8 and Figure 10 , the wiping device 30 further comprises a distance measuring device 37 for detecting the length of the dust-free cloth tape 31 pulled by the driving pulley 33; the distance measuring device 37 comprises a distance measuring roller 371 and an encoder 372, the distance measuring roller 371 is rotatably installed on the base plate 32, and the rotation axis of the distance measuring roller 371 is parallel to the rotation axis of the driving pulley 33; the encoder 372 is installed on the base plate 32 and connected with one end of the distance measuring roller 371; the dust-free cloth tape 31 is wound around the distance measuring roller 371 at a predetermined position between the first end and the second end of the dust-free cloth tape 31. The length of the dust-free cloth tape 31 pulled by the driving pulley 33 can be detected by the distance measuring device 37, and the length of the dust-free cloth tape 31 used for wiping and cleaning the COF can be more accurately controlled.

[0060] In the embodiment, as shown in Figure 7 , Figure 8 and Figure 10 , the wiping device 30 further comprises a pressing device 38 comprising a pushing structure 381 and a pressing roller 382; the pushing structure 381 is installed beside the distance measuring roller 371, and the displacement output direction of the pushing structure 381 is perpendicular to the rotation axis of the distance measuring roller 371; the displacement output end of the pushing structure 381 is rotatably installed with the pressing roller 382, and the rotation axis of the pressing roller 382 is parallel to the rotation axis of the distance measuring roller 371; when the displacement output end of the pushing structure 381 extends, the pressing roller 382 is close to the distance measuring roller 371, so that the dust-free cloth tape 31 wound around the distance measuring roller 371 is pressed by the pressing roller 382. The dust-free cloth tape 31 is closely attached to the distance measuring roller 371 by the pressing roller 382 of the pressing device 38, which ensures that the dust-free cloth tape 31 drives the rotation of the distance measuring roller 371, and eliminates the relative sliding between the distance measuring roller 371 and the dust-free cloth tape 31 as much as possible, so as to improve the accurate detection of the length of the dust-free cloth tape 31 passed by the distance measuring device 37.

[0061] In the embodiment, as shown in Figure 1 and Figure 2 , the inspection device 40 comprises a rack 41, an inspection camera 42 and an inspection controller; the rack 41 is arranged in the equipment station area beside the COF bearing seat 10, and is located at the next station of the station where the wiping device 30 is located; the inspection camera 42 is installed on the rack 41 and faces the upper surface of the COF bearing seat 10; the inspection controller is electrically connected with the inspection camera 42, and is used for controlling the inspection camera 42 to shoot the picture of the cleaned COF below; the inspection controller is also used for comparing the cleaned COF picture with the pre-stored standard cleaned COF picture in terms of feature parameters, calculating whether the cleaned COF picture is appropriate, and generating a qualified signal or an unqualified signal and sending it to the discharging device 50.

[0062] In the present embodiment, as shown in Figure 1 and Figure 2 The feeding device 50 includes a sorting device 51 and a conveyor assembly 52; the sorting device 51 is arranged in the equipment workstation area beside the COF carrier 10 and is located at the next workstation of the workstation where the inspection device 40 is located; the conveyor assembly 52 is arranged beside the sorting device 51, and the conveyor assembly 52 includes a qualified product conveyor 521 and an unqualified product conveyor 522; the sorting device 51 has a multi-degree-of-freedom mechanical arm and a suction cup for sucking COF or a clamping jaw for clamping COF, and is placed on the corresponding qualified product conveyor 521 and unqualified product conveyor 522, respectively.

[0063] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A COF cleaning apparatus, characterized by, The device comprises a COF carrier (10), a point solvent device (20), a wiping device (30), an inspection device (40) and a discharging device (50); The COF carrier (10) comprises a rotating device (11) and a rotating disc (12) installed on the rotating device (11), at least one carrier position (101) is arranged on the upper surface of the rotating disc (12), each carrier position (101) is used for carrying a COF, and the rotating device (11) drives the rotating disc (12) to rotate by a fixed angle β each time; A device station area is arranged around the circumferential area of the COF carrier (10); the point solvent device (20), the wiping device (30), the inspection device (40) and the discharging device (50) are sequentially distributed in the device station area around the COF carrier (10), and the included angle between two adjacent devices in the point solvent device (20), the wiping device (30), the inspection device (40) and the discharging device (50) to the center line of the rotating disc (12) is equal to the fixed angle β; The rotation of the rotating disc (12) makes each carrier position (101) sequentially rotate and correspond to the positions of the point solvent device (20), the wiping device (30), the inspection device (40) and the discharging device (50) in sequence after rotating to the device station area; The point solvent device (20) is used for dropping cleaning solvent in the form of drops to the COF on the carrier position (101); The wiping device (30) comprises a pulley device and a dust-free cloth belt (31) rotating with the pulley device, and the pulley device drives the dust-free cloth belt (31) to wipe the COF on the carrier position (101); The inspection device (40) is signal connected with the discharging device (50); the inspection device (40) is used for checking the cleaning condition of the COF on the carrier position (101), obtaining a qualified signal or an unqualified signal, and sending the signal to the discharging device (50); and the discharging device (50) is used for sorting and discharging the COF rotating from the position of the inspection device (40) according to the received qualified signal or unqualified signal.

2. The COF cleaning apparatus of claim 1, wherein, The point solvent device (20) comprises: a base (21) installed in the device station area beside the COF carrier (10); a spatial displacement assembly (22) installed on the base (21); a suction device (23) installed on the spatial displacement assembly (22), comprising a suction port and a discharge port; a solvent tank (24) detachably installed on the spatial displacement assembly (22), and the opening of the solvent tank (24) is connected to the suction port of the suction device (23); a liquid outlet needle (25) detachably connected to the discharge port of the suction device (23), and the liquid outlet direction of the liquid outlet needle (25) is vertically downward. The extraction device (23) works to make the cleaning solvent in the solvent tank (24) discharge from the liquid outlet needle (25) in the form of drops.

3. The COF cleaning apparatus of claim 2, wherein, The extraction device (23) comprises a suction pump (231) and a suction head (232) connected with the suction pump (231), the suction pump (231) is installed on the space displacement assembly (22), and the opening of the solvent tank (24) is connected with the suction head (232) in a plug-in manner.

4. The COF cleaning apparatus of claim 3, wherein, An installation rack (26) is installed on the space displacement assembly (22), and a through cylindrical structure (261) is arranged on the installation rack (26); The installation rack (26) is installed on the space displacement assembly (22) in a posture that the cylindrical structure (261) is vertically placed, the extraction device (23) is installed on the installation rack (26) and the suction head (232) is directed to the lower end opening of the cylindrical structure (261); The solvent tank (24) is inserted into the cylindrical structure (261) from top to bottom, so that the opening of the solvent tank (24) is plugged with the suction head (232).

5. The COF cleaning apparatus of claim 4, wherein, A needle supporting piece (262) is installed on the installation rack (26), and the needle supporting piece (262) comprises a vertical piece (2621) and a horizontal piece (2622); The vertical piece (2621) is vertically installed on the installation rack (26), the first end of the horizontal piece (2622) is fixedly connected with the lower end of the vertical piece (2621), the second end of the horizontal piece (2622) extends horizontally to the position of the liquid outlet needle (25), and the horizontal piece (2622) is provided with a vertical through hole (2623) opposite the liquid outlet direction of the liquid outlet needle (25), and the liquid outlet needle (25) passes through the through hole (2623) from top to bottom.

6. The COF cleaning apparatus of claim 2, wherein, The point solvent device (20) further comprises a needle cleaning structure (27), the needle cleaning structure (27) comprises an extension frame (271) and a flexible cleaning part (272); one end of the extension frame (271) is fixedly connected with the base (21), and the other end is installed with the flexible cleaning part (272); The space displacement assembly (22) drives the liquid outlet needle (25) of the extraction device (23) to approach the flexible cleaning part (272), and makes the liquid outlet needle (25) rub on the flexible cleaning part (272).

7. The COF cleaning apparatus of claim 1, wherein, The wiping device (30) further comprises a base plate (32), which is vertically arranged in the equipment workstation area beside the COF bearing seat (10) and located at the next workstation of the workstation where the point solvent device (20) is located; The belt wheel device of the wiping device (30) comprises a driving belt wheel (33) and a driven belt wheel (34), the driving belt wheel (33) is rotatably mounted on the base plate (32), and a driving device (331) for driving the driving belt wheel (33) to rotate is mounted on the base plate (32); the driven belt wheel (34) is rotatably mounted on the base plate (32) above the driving belt wheel (33), and the rotation axis of the driven belt wheel (34) is parallel to the driving belt wheel (33); The wiping device (30) further comprises a wiping assembly (35) mounted on the base plate (32), the wiping assembly (35) comprises a wiping head (351) and a redirecting roller (352), the wiping head (351) has a wiping surface facing downward, and the redirecting roller (352) is arranged beside the wiping head (351) and the axis of the redirecting roller (352) is parallel to the driving belt wheel (33); The dustless cloth belt (31) comprises a first end and a second end, the first end is wound on the driven belt wheel (34); the second end of the dustless cloth belt (31) is wound on the redirecting roller (352) after passing through the wiping surface of the wiping head (351), and then is wound on the driving belt wheel (33); the redirecting roller (352) changes the direction of the dustless cloth belt (31) and makes the surface of the dustless cloth belt (31) adhere to the wiping surface.

8. The COF cleaning apparatus of claim 7, wherein, The wiping head (351) is provided with a liquid outlet hole (3511) penetrating from top to bottom to the wiping surface, and the upper end of the liquid outlet hole (3511) is connected to a liquid outlet assembly; the liquid outlet assembly comprises a solution tank and a solution pump, one end of the solution pump is connected to the solution tank, and the other end of the solution pump is connected to the upper end of the liquid outlet hole (3511).

9. The COF cleaning apparatus of claim 7, wherein, The wiping assembly (35) further comprises a frame plate (353) and a displacement assembly (354), the wiping head (351) is mounted on the frame plate (353) with the wiping surface facing downward, and the redirecting roller (352) is also mounted on the frame plate (353): The displacement assembly (354) comprises an up-down displacement module (3541) and a front-rear displacement module (3542), the displacement direction of the front-rear displacement module (3542) is parallel to the surface of the base plate (32) and perpendicular to the displacement direction of the up-down displacement module (3541); The frame plate (353) is mounted on the displacement assembly (354).

10. The COF cleaning apparatus of claim 7, wherein, The wiping device (30) further comprises a tensioning assembly (36) mounted on the base plate (32) for abutting against a predetermined position between the first end and the second end of the dustless cloth belt (31) to adjust the tightness of the transmission of the dustless cloth belt (31).

11. The COF cleaning apparatus according to any one of claims 7-10, wherein, The wiping device (30) further comprises a distance measuring device (37) for detecting the length of the dustless cloth belt (31) pulled by the driving belt wheel (33). The distance measuring device (37) comprises a distance measuring roller (371) and an encoder (372), the distance measuring roller (371) is rotatably installed on the base plate (32), and the rotation axis of the distance measuring roller (371) is parallel to the rotation axis of the driving pulley (33); The encoder (372) is installed on the base plate (32) and connected with one end of the distance measuring roller (371); The dust-free cloth belt (31) is wound around the distance measuring roller (371) at a predetermined position between the first end and the second end.

12. The COF cleaning apparatus of claim 1, wherein, The inspection device (40) comprises a rack (41), an inspection camera (42) and an inspection controller; the rack (41) is arranged in the equipment work station area beside the COF bearing seat (10) and is located at the next work station of the work station where the wiping device (30) is located; the inspection camera (42) is installed on the rack (41) and faces the upper surface of the COF bearing seat (10); the inspection controller is electrically connected with the inspection camera (42) and is used to control the inspection camera (42) to shoot the picture of the cleaned COF below, and is also used to compare the cleaned COF picture with the pre-stored standard cleaned COF picture in feature parameters, calculate whether the cleaned COF picture is appropriate, and generate a qualified signal or an unqualified signal and send it to the discharging device (50).

13. The COF cleaning apparatus of claim 1, wherein, The discharging device (50) comprises a sorting device (51) and a conveyor belt assembly (52); the sorting device (51) is arranged in the equipment work station area beside the COF bearing seat (10) and is located at the next work station of the work station where the inspection device (40) is located; the conveyor belt assembly (52) is arranged beside the sorting device (51), and the conveyor belt assembly (52) comprises a qualified product conveyor belt (521) and an unqualified product conveyor belt (522); The sorting device (51) is used to adsorb or clamp the COF and place it on the corresponding qualified product conveyor belt (521) and unqualified product conveyor belt (522) respectively.

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